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g=2,k=2,y=2;e.readBits(1)&&(g=e.readBits(8),k=e.readBits(8),y=e.readBits(8));let b=0,w=1,T=1,S=0;return p?b=e.readBits(1):1===g&&13===k&&0===y?(b=1,w=0,T=0):(b=e.readBits(1),0===r?(w=1,T=1):1===r?(w=0,T=0):12===m?(w=e.readBits(1),T=w?e.readBits(1):0):(w=1,T=0),w&&T&&(S=e.readBits(2))),{profile:r,level:s,tier:n,bitDepth:m,monochrome:p,chromaSubsamplingX:w,chromaSubsamplingY:T,chromaSamplePosition:S,videoFullRangeFlag:b,colourPrimaries:g,transferCharacteristics:k,matrixCoefficients:y}}return null},Tt=e=>{if(e.length<36)return null;const t=g(e);if(1768124518!==t.getUint32(4))return null;return t.getUint16(8)<28?null:{fullRange:!1,colourPrimaries:t.getUint8(22),transferCharacteristics:t.getUint8(23),matrixCoefficients:t.getUint8(24)}},St=[480,960,1920,2880,480,960,1920,2880,480,960,1920,2880,480,960,480,960,120,240,480,960,120,240,480,960,120,240,480,960,120,240,480,960],vt=e=>{if(e.length<7)throw new Error("Setup header is too short.");if(5!==e[0])throw new Error("Wrong packet type in 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t=i.subarray(e.offset,e.offset+e.length),r=Ke(t);let a=1;do{let e=0;for(;;){const t=r[a++];if(void 0===t)break;if(e+=t,t<255)break}let t=0;for(;;){const e=r[a++];if(void 0===e)break;if(t+=e,e<255)break}if(e===6){const e=new _e(r);e.pos=8*a;const t=h(e),i=e.readBits(1);if(0===t&&1===i)return"key"}a+=t}while(a{var i,r;const a=g(e);let s=0;const n=a.getUint32(s,!0);s+=4;const o=k.decode(e.subarray(s,s+n));s+=n,n>0&&(t.raw??(t.raw={}),(i=t.raw).vendor??(i.vendor=o));const c=a.getUint32(s,!0);s+=4;for(let l=0;l0&&(t.trackNumber??(t.trackNumber=i)),r&&Number.isInteger(r)&&r>0&&(t.tracksTotal??(t.tracksTotal=r))}break;case"TRACKTOTAL":{const e=Number.parseInt(l,10);Number.isInteger(e)&&e>0&&(t.tracksTotal??(t.tracksTotal=e))}break;case"DISCNUMBER":{const e=l.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(t.discNumber??(t.discNumber=i)),r&&Number.isInteger(r)&&r>0&&(t.discsTotal??(t.discsTotal=r))}break;case"DISCTOTAL":{const e=Number.parseInt(l,10);Number.isInteger(e)&&e>0&&(t.discsTotal??(t.discsTotal=e))}break;case"DATE":{const e=new Date(l);Number.isNaN(e.getTime())||(t.date??(t.date=e))}break;case"GENRE":t.genre??(t.genre=l);break;case"METADATA_BLOCK_PICTURE":{const e=me(l),i=g(e),r=i.getUint32(0,!1),a=i.getUint32(4,!1),s=String.fromCharCode(...e.subarray(8,8+a)),n=i.getUint32(8+a,!1),o=k.decode(e.subarray(12+a,12+a+n)),c=i.getUint32(a+n+28),u=e.subarray(a+n+32,a+n+32+c);t.images??(t.images=[]),t.images.push({data:u,mimeType:s,kind:3===r?"coverFront":4===r?"coverBack":"unknown",name:void 0,description:o||void 0})}}}},Bt=[2,1,2,3,3,4,4,5],Et=e=>{if(e.length<7)return null;if(11!==e[0]||119!==e[1])return null;const t=new _e(e);t.skipBits(16),t.skipBits(16);const i=t.readBits(2);if(3===i)return null;const r=t.readBits(6),a=t.readBits(5);if(a>8)return null;const s=t.readBits(3),n=t.readBits(3);0!==(1&n)&&1!==n&&t.skipBits(2),0!==(4&n)&&t.skipBits(2),2===n&&t.skipBits(2);return{fscod:i,bsid:a,bsmod:s,acmod:n,lfeon:t.readBits(1),bitRateCode:Math.floor(r/2)}},_t=[128,138,192,128,140,192,160,174,240,160,176,240,192,208,288,192,210,288,224,242,336,224,244,336,256,278,384,256,280,384,320,348,480,320,350,480,384,416,576,384,418,576,448,486,672,448,488,672,512,556,768,512,558,768,640,696,960,640,698,960,768,834,1152,768,836,1152,896,974,1344,896,976,1344,1024,1114,1536,1024,1116,1536,1280,1392,1920,1280,1394,1920,1536,1670,2304,1536,1672,2304,1792,1950,2688,1792,1952,2688,2048,2228,3072,2048,2230,3072,2304,2506,3456,2304,2508,3456,2560,2786,3840,2560,2788,3840],Rt=[1,2,3,6],Ft=e=>{if(e.length<6)return null;if(11!==e[0]||119!==e[1])return null;const t=new _e(e);t.skipBits(16);const i=t.readBits(2);if(t.skipBits(3),0!==i&&2!==i)return null;const r=t.readBits(11),a=t.readBits(2);let s,n=0;3===a?(n=t.readBits(2),s=3):s=t.readBits(2);const o=t.readBits(3),c=t.readBits(1),l=t.readBits(5);if(l<11||l>16)return null;const u=Rt[s];let d;d=a<3?Ne[a]/1e3:Oe[n]/1e3;return{dataRate:Math.round((r+1)*d/(16*u)),substreams:[{fscod:a,fscod2:n,bsid:l,bsmod:0,acmod:o,lfeon:c,numDepSub:0,chanLoc:0}]}},At=e=>{const t=e.substreams[0];return l(t),t.fscod<3?Ne[t.fscod]:null!==t.fscod2&&t.fscod2<3?Oe[t.fscod2]:null},Dt=e=>{const t=e.substreams[0];l(t);let i=Bt[t.acmod]+t.lfeon;if(t.numDepSub>0){const e=[2,2,1,1,2,2,2,1,1];for(let r=0;r<9;r++)t.chanLoc&1<<8-r&&(i+=e[r])}return i},Mt=[0,8e3,16e3,32e3,0,0,11025,22050,44100,0,0,12e3,24e3,48e3,96e3,192e3],Nt=[32e3,56e3,64e3,96e3,112e3,128e3,192e3,224e3,256e3,32e4,384e3,448e3,512e3,576e3,64e4,768e3,96e4,1024e3,1152e3,128e4,1344e3,1408e3,1411200,1472e3,1536e3,192e4,2048e3,3072e3,384e4,0,0,0],Ot=[16,16,20,20,0,24,24,0],Lt=[1,2,2,2,2,3,3,4,4,5,6,6,6,7,8,8],zt=[1,2,2,2,2,3,18,19,6,7,518,323,83,519,582,535],Ut=[32e3,44100,48e3,0],qt=[8e3,16e3,32e3,64e3,128e3,22050,44100,88200,176400,352800,12e3,24e3,48e3,96e3,192e3,384e3],Wt=[512,1024,2048,4096],Ht=e=>{const t=jt(e),i=g(e);let r=t?4*Math.ceil(t.frameSize/4):0,a=null;for(;r+4<=e.length&&1683496997===i.getUint32(r);){const t=Kt(e.subarray(r));if(!t)break;a??(a=t),r+=t.frameSize}if(t)return{frameSize:a?r:t.frameSize,sampleRate:t.sampleRate,numberOfChannels:t.numberOfChannels,sampleCount:t.sampleCount,channelLayout:t.channelLayout,pcmResolution:t.pcmResolution,bitRate:t.bitRate,core:t,hasExtensions:null!==a};if(!a?.asset)return 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t=new Uint8Array([a.avcProfileIndication,a.profileCompatibility,a.avcLevelIndication]);return`avc${e.avcType}.${_(t)}`}if(!i||i.byteLength<4)throw new TypeError("AVC decoder description is not provided or is not at least 4 bytes long.");return`avc${e.avcType}.${_(i.subarray(1,4))}`}if("hevc"===t){let e,t,r,a,n,o;if(s)e=s.generalProfileSpace,t=s.generalProfileIdc,r=R(s.generalProfileCompatibilityFlags),a=s.generalTierFlag,n=s.generalLevelIdc,o=[...s.generalConstraintIndicatorFlags];else{if(!i||i.byteLength<23)throw new TypeError("HEVC decoder description is not provided or is not at least 23 bytes long.");const s=g(i),c=s.getUint8(1);e=c>>6&3,t=31&c,r=R(s.getUint32(2)),a=c>>5&1,n=s.getUint8(12),o=[];for(let e=0;e<6;e++)o.push(s.getUint8(6+e))}let c="hev1.";for(c+=["","A","B","C"][e]+t,c+=".",c+=r.toString(16).toUpperCase(),c+=".",c+=0===a?"L":"H",c+=n;o.length>0&&0===o[o.length-1];)o.pop();return o.length>0&&(c+=".",c+=o.map(e=>e.toString(16).toUpperCase()).join(".")),c}if("vp8"===t)return"vp8";if("vp9"===t){if(!n){const t=e.width*e.height;let i=d(Jt).level;for(const e of Jt)if(t<=e.maxPictureSize){i=e.level;break}return`vp09.00.${i.toString().padStart(2,"0")}.08`}let t=`vp09.${n.profile.toString().padStart(2,"0")}.${n.level.toString().padStart(2,"0")}.${n.bitDepth.toString().padStart(2,"0")}.${n.chromaSubsampling.toString().padStart(2,"0")}`;return t+=`.${n.colourPrimaries.toString().padStart(2,"0")}.${n.transferCharacteristics.toString().padStart(2,"0")}.${n.matrixCoefficients.toString().padStart(2,"0")}.${n.videoFullRangeFlag.toString().padStart(2,"0")}`,t.endsWith(Zt)&&(t=t.slice(0,-15)),t}if("av1"===t){if(!o){const t=e.width*e.height;let i=d(Jt).level;for(const e of Jt)if(t<=e.maxPictureSize){i=e.level;break}return`av01.0.${i.toString().padStart(2,"0")}M.08`}const t=o.profile,i=o.level.toString().padStart(2,"0"),a=o.tier?"H":"M",s=o.bitDepth.toString().padStart(2,"0"),n=o.monochrome?"1":"0",c=100*o.chromaSubsamplingX+10*o.chromaSubsamplingY+1*(o.chromaSubsamplingX&&o.chromaSubsamplingY?o.chromaSamplePosition:0),l=r?.primaries?b[r.primaries]:1,u=r?.transfer?T[r.transfer]:1,h=r?.matrix?v[r.matrix]:1,f=r?.fullRange?1:0;let m=`av01.${t}.${i}${a}.${s}`;return m+=`.${n}.${c.toString().padStart(3,"0")}`,m+=`.${l.toString().padStart(2,"0")}`,m+=`.${u.toString().padStart(2,"0")}`,m+=`.${h.toString().padStart(2,"0")}`,m+=`.${f}`,m.endsWith(ei)&&(m=m.slice(0,-17)),m}if("prores"===t)return c??"apch";throw null!==t&&z(t),new TypeError(`Unhandled codec '${t}'.`)},ai=e=>{switch(e.codec){case"avc":{let t=e.avcCodecInfo?.sequenceParameterSets[0];if(!t&&e.codecDescription&&(t=Je(e.codecDescription)?.sequenceParameterSets[0]),t){const e=et(t);if(e)return{primaries:w[e.colourPrimaries],transfer:S[e.transferCharacteristics],matrix:P[e.matrixCoefficients],fullRange:!!e.fullRangeFlag}}}break;case"hevc":{let t=e.hevcCodecInfo?.arrays.find(e=>e.nalUnitType===Ue.SPS_NUT)?.nalUnits[0];if(!t&&e.codecDescription&&(t=(e=>{try{const t=g(e);let i=0;const r=t.getUint8(i++),a=t.getUint8(i++),s=a>>6&3,n=a>>5&1,o=31&a,c=t.getUint32(i,!1);i+=4;const l=e.subarray(i,i+6);i+=6;const u=t.getUint8(i++),d=(15&t.getUint8(i++))<<8|t.getUint8(i++),h=3&t.getUint8(i++),f=3&t.getUint8(i++),m=7&t.getUint8(i++),p=7&t.getUint8(i++),k=t.getUint16(i,!1);i+=2;const y=t.getUint8(i++),b=y>>6&3,w=y>>3&7,T=y>>2&1,S=3&y,v=t.getUint8(i++),P=[];for(let g=0;g>7&1,s=63&r,n=t.getUint16(i,!1);i+=2;const o=[];for(let c=0;ce.nalUnitType===Ue.SPS_NUT)?.nalUnits[0]),t){const 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i;l(t),i="u"===t[1]?"unsigned":"s"===t[1]?"signed":"float";return{dataType:i,sampleSize:Number(t[2])/8,littleEndian:"be"!==t[3],silentValue:"pcm-u8"===e?128:0}},li=e=>e.startsWith("avc1")||e.startsWith("avc3")?"avc":e.startsWith("hev1")||e.startsWith("hvc1")?"hevc":"vp8"===e?"vp8":e.startsWith("vp09")?"vp9":e.startsWith("av01")?"av1":ti.includes(e)?"prores":"mp3"===e||"mp4a.69"===e||"mp4a.6B"===e||"mp4a.6b"===e||"mp4a.40.34"===e?"mp3":e.startsWith("mp4a.40.")||"mp4a.67"===e?"aac":"opus"===e?"opus":"vorbis"===e?"vorbis":"flac"===e?"flac":"ac-3"===e||"ac3"===e?"ac3":"ec-3"===e||"eac3"===e?"eac3":ii.includes(e)?"dts":"ulaw"===e?"ulaw":"alaw"===e?"alaw":oi.test(e)?e:"webvtt"===e?"webvtt":null,ui=[44100,48e3,32e3],di=[-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,32,40,48,56,64,80,96,112,128,160,192,224,256,320,-1,-1,32,48,56,64,80,96,112,128,160,192,224,256,320,384,-1,-1,32,64,96,128,160,192,224,256,288,320,352,384,416,448,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,32,48,56,64,80,96,112,128,144,160,176,192,224,256,-1],hi=1483304551,fi=1231971951,mi=(e,t)=>3===e?3===t?21:36:3===t?13:21,pi=(e,t)=>{const 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TextDecoder("utf-16be").decode(r);case 13:return new Ce(r,"image/jpeg");case 14:return new Ce(r,"image/png");case 27:return new Ce(r,"image/bmp");default:return r}},Ri=16,Fi=new Uint32Array(256),Ai=new Uint32Array(256),Di=new Uint32Array(256),Mi=new Uint32Array(256),Ni=new Uint32Array(256),Oi=new Uint32Array(256),Li=new Uint32Array(10);let zi=!1;class Ui{constructor(){this.roundkey=new Uint32Array(44),this.iv=new Uint32Array(Ri/Uint32Array.BYTES_PER_ELEMENT),this.in=new Uint8Array(Ri),this.out=new Uint8Array(Ri),this.inView=new DataView(this.in.buffer),this.outView=new DataView(this.out.buffer)}init({key:e,iv:t}){l(16===e.byteLength),l(16===t.byteLength),zi||(()=>{const e=new Uint8Array(256),t=new Uint8Array(256),i=new Uint8Array(256);for(let s=0,n=1;s<256;s++)i[s]=n,t[n]=s,n=n^n<<1^(128&n?283:0);const r=(e,r)=>e&&r?i[(t[e]+t[r])%255]:0;e[0]=99;for(let s=1;s<256;s++){const r=i[255-t[s]];let a=r^r<<1^r<<2^r<<3^r<<4;a=a>>>8^255&a^99,e[s]=a}for(let s=0;s<256;s++){const t=e[s],i=e.indexOf(s);Fi[s]=t<<24|t<<16|t<<8|t,Oi[s]=i<<24|i<<16|i<<8|i;const a=r(i,14)<<24|r(i,9)<<16|r(i,13)<<8|r(i,11);Ai[s]=a,Di[s]=a>>>8|a<<24,Mi[s]=a>>>16|a<<16,Ni[s]=a>>>24|a<<8}let a=1;for(let s=0;s<10;s++)Li[s]=a<<24,a=a<<1^(128&a?283:0);zi=!0})();const i=new DataView(e.buffer,e.byteOffset,e.byteLength),r=new DataView(t.buffer,t.byteOffset,t.byteLength);this.roundkey[0]=i.getUint32(0,!1),this.roundkey[1]=i.getUint32(4,!1),this.roundkey[2]=i.getUint32(8,!1),this.roundkey[3]=i.getUint32(12,!1),this.iv[0]=r.getUint32(0,!1),this.iv[1]=r.getUint32(4,!1),this.iv[2]=r.getUint32(8,!1),this.iv[3]=r.getUint32(12,!1);for(let a=4;a<44;a+=4){const e=this.roundkey[a-1];this.roundkey[a]=this.roundkey[a-4]^4278190080&Fi[e>>>16&255]^16711680&Fi[e>>>8&255]^65280&Fi[e>>>0&255]^255&Fi[e>>>24&255]^Li[a/4-1],this.roundkey[a+1]=this.roundkey[a-3]^this.roundkey[a],this.roundkey[a+2]=this.roundkey[a-2]^this.roundkey[a+1],this.roundkey[a+3]=this.roundkey[a-1]^this.roundkey[a+2]}for(let a=0,s=40;a>>24&255]]^Di[255&Fi[t>>>16&255]]^Mi[255&Fi[t>>>8&255]]^Ni[255&Fi[t>>>0&255]]}}decrypt(){let e=this.inView.getUint32(0,!1)^this.roundkey[0],t=this.inView.getUint32(4,!1)^this.roundkey[1],i=this.inView.getUint32(8,!1)^this.roundkey[2],r=this.inView.getUint32(12,!1)^this.roundkey[3];const a=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),n=this.inView.getUint32(8,!1),o=this.inView.getUint32(12,!1);let c,l,u,d;for(let g=1;g<10;g++){const a=4*g;c=Ai[e>>>24]^Di[r>>>16&255]^Mi[i>>>8&255]^Ni[255&t]^this.roundkey[a],l=Ai[t>>>24]^Di[e>>>16&255]^Mi[r>>>8&255]^Ni[255&i]^this.roundkey[a+1],u=Ai[i>>>24]^Di[t>>>16&255]^Mi[e>>>8&255]^Ni[255&r]^this.roundkey[a+2],d=Ai[r>>>24]^Di[i>>>16&255]^Mi[t>>>8&255]^Ni[255&e]^this.roundkey[a+3],e=c,t=l,i=u,r=d}const h=4278190080&Oi[e>>>24&255]^16711680&Oi[r>>>16&255]^65280&Oi[i>>>8&255]^255&Oi[t>>>0&255]^this.roundkey[40],f=4278190080&Oi[t>>>24&255]^16711680&Oi[e>>>16&255]^65280&Oi[r>>>8&255]^255&Oi[i>>>0&255]^this.roundkey[41],m=4278190080&Oi[i>>>24&255]^16711680&Oi[t>>>16&255]^65280&Oi[e>>>8&255]^255&Oi[r>>>0&255]^this.roundkey[42],p=4278190080&Oi[r>>>24&255]^16711680&Oi[i>>>16&255]^65280&Oi[t>>>8&255]^255&Oi[e>>>0&255]^this.roundkey[43];this.outView.setUint32(0,h^this.iv[0],!1),this.outView.setUint32(4,f^this.iv[1],!1),this.outView.setUint32(8,m^this.iv[2],!1),this.outView.setUint32(12,p^this.iv[3],!1),this.iv[0]=a,this.iv[1]=s,this.iv[2]=n,this.iv[3]=o}}class qi extends wi{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.psshBoxes=[],this.currentFragment=null,this.lastReadFragment=null,this.decryptionKeyCache=new Map,this.reader=e._reader}async getTrackBackings(){return await this.readMetadata(),this.tracks.map(e=>e.trackBacking)}async getMimeType(){await this.readMetadata();const e=await this.getTrackBackings(),t=await Promise.all(e.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>"video"===e.info?.type),hasAudio:this.tracks.some(e=>"audio"===e.info?.type),codecStrings:t.filter(Boolean)})}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0,t=!1,i=!1;for(;;){let r=this.reader.requestSliceRange(e,8,16);if(de(r)&&(r=await r),!r)break;const a=e,s=Ii(r);if(!s)break;if("ftyp"===s.name||"styp"===s.name){const e=Oo(r,4);this.isQuickTime="qt "===e}else{if("moov"===s.name){let e=this.reader.requestSlice(r.filePos,s.contentSize);if(de(e)&&(e=await e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice);for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}t=this.isFragmented&&null!==this.reader.fileSize&&this.reader.fileSize>a+s.totalSize,i=!0;break}if("moof"===s.name){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');await this.copyMetadataFromInitInput(this.input._initInput),t=!1,i=!0;break}}e=a+s.totalSize}if(!i&&this.input._initInput&&await this.copyMetadataFromInitInput(this.input._initInput),t){l(null!==this.reader.fileSize);let e=this.reader.requestSlice(this.reader.fileSize-4,4);de(e)&&(e=await e),l(e);const t=Bo(e),i=this.reader.fileSize-t;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(de(e)&&(e=await e),e){const t=Ii(e);if(t&&"mfra"===t.name){let i=this.reader.requestSlice(e.filePos,t.contentSize);de(i)&&(i=await i),i&&this.readContiguousBoxes(i)}}}}})())}async copyMetadataFromInitInput(e){const t=await e._getDemuxer();if(t.constructor!==qi)throw new Error("Init input must match the input's format.");await t.readMetadata(),this.movieTimescale=t.movieTimescale,this.movieDurationInTimescale=t.movieDurationInTimescale,this.metadataTags=t.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=t.fragmentTrackDefaults,this.psshBoxes=t.psshBoxes;for(const i of t.tracks){const e={id:i.id,demuxer:this,trackBacking:null,disposition:i.disposition,timescale:i.timescale,durationInMediaTimescale:i.durationInMediaTimescale,durationInMovieTimescale:i.durationInMovieTimescale,rotation:i.rotation,internalCodecId:i.internalCodecId,name:i.name,languageCode:i.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:i.editListPreviousSegmentDurations,editListOffset:i.editListOffset,encryptionInfo:i.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:i.info};if(i.trackBacking)if(l(e.info),"video"===e.info.type&&-1!==e.info.width){const t=e;e.trackBacking=new Hi(t),this.tracks.push(e)}else if("audio"===e.info.type&&-1!==e.info.numberOfChannels){const t=e;e.trackBacking=new Vi(t),this.tracks.push(e)}}}getSampleTableForTrack(e){if(e.sampleTable)return e.sampleTable;const t={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=t,null===e.sampleTableByteOffset)return t;l(this.moovSlice);const i=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(i),this.currentTrack=null;if("audio"===e.info?.type&&e.info.codec&&Gt.includes(e.info.codec)&&0===t.sampleCompositionTimeOffsets.length){l("audio"===e.info?.type);const i=ci(e.info.codec),r=[],a=[];for(let s=0;se.startIndex),u=t.sampleTimingEntries[l],h=A(t.sampleTimingEntries,c,e=>e.startIndex),f=t.sampleTimingEntries[h],m=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,p=f.startDecodeTimestamp+(c-f.startIndex)*f.delta-m,g=d(r);g&&g.delta===p?g.count++:r.push({startIndex:n.startChunkIndex+s,startDecodeTimestamp:m,count:1,delta:p});const k=n.samplesPerChunk*i.sampleSize*e.info.numberOfChannels;a.push(k)}n.startSampleIndex=n.startChunkIndex,n.samplesPerChunk=1}t.sampleTimingEntries=r,t.sampleSizes=a}if(t.sampleCompositionTimeOffsets.length>0){t.presentationTimestamps=[];for(const e of t.sampleTimingEntries)for(let i=0;ie.presentationTimestamp-t.presentationTimestamp),t.presentationTimestampIndexMap=Array(t.presentationTimestamps.length).fill(-1);for(let e=0;ee.moofOffset===a.moofOffset);if(i)Gi(s,i.timestamp);else{const e=A(t,a.moofOffset-1,e=>e.moofOffset);if(-1!==e){const i=t[e];Gi(s,i.endTimestamp)}}s.startTimestampIsFinal=!0}const i=A(t,s.startTimestamp,e=>e.startTimestamp);if(-1!==i&&t[i].moofOffset===a.moofOffset||t.splice(i+1,0,{moofOffset:a.moofOffset,startTimestamp:s.startTimestamp,endTimestamp:s.endTimestamp}),s.encryptionAuxInfo&&e.encryptionInfo){const t=await Zi(this.reader,e.encryptionInfo,s.encryptionAuxInfo);for(let e=0;e0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;Y(t.languageCode)||(t.languageCode=V)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=Oo(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:{...x},avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=j,this.readContiguousBoxes(e.slice($,X.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const i=So(e);e.skip(3);const r=Bo(e);for(let a=0;a0&&(1===n?(e.skip(4),c=8*Bo(e),e.skip(8)):2===n&&(e.skip(4),l=No(e),o=Bo(e),e.skip(4),c=Bo(e),u=Bo(e),e.skip(8))),t.info.numberOfChannels=o,t.info.sampleRate=l,t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+a.totalSize-e.filePos));const d="enca"===s?t.frmaCodecString:s;if(t.frmaCodecString=null,"mp4a"===d);else if("opus"===d)t.info.codec="opus",t.info.sampleRate=ni;else if("flac"===d)t.info.codec="flac";else if("ulaw"===d)t.info.codec="ulaw";else if("alaw"===d)t.info.codec="alaw";else if("ac-3"===d)t.info.codec="ac3";else if("ec-3"===d)t.info.codec="eac3";else if(ii.includes(d))t.info.codec="dts",t.info.dtsFormat=d;else if("twos"===d)8===c?t.info.codec="pcm-s8":16===c?t.info.codec=t.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(xe._warn(`Unsupported sample size ${c} for codec 'twos'.`),t.info.codec=null);else if("sowt"===d)8===c?t.info.codec="pcm-s8":16===c?t.info.codec="pcm-s16":(xe._warn(`Unsupported sample size ${c} for codec 'sowt'.`),t.info.codec=null);else if("raw "===d)t.info.codec="pcm-u8";else if("in24"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if("in32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if("fl32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if("fl64"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if("ipcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?16===e?t.info.codec="pcm-s16":24===e?t.info.codec="pcm-s24":32===e?t.info.codec="pcm-s32":(xe._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null):16===e?t.info.codec="pcm-s16be":24===e?t.info.codec="pcm-s24be":32===e?t.info.codec="pcm-s32be":(xe._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null)}else if("fpcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?32===e?t.info.codec="pcm-f32":64===e?t.info.codec="pcm-f64":(xe._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null):32===e?t.info.codec="pcm-f32be":64===e?t.info.codec="pcm-f64be":(xe._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=c+7>>3,i=Boolean(1&u),r=Boolean(2&u),a=4&u?-1:0;c>0&&c<=64&&(i?32===c&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):a&1<0?(t.encryptionInfo.defaultCryptByteBlock=r>>4,t.encryptionInfo.defaultSkipByteBlock=15&r):(t.encryptionInfo.defaultCryptByteBlock=0,t.encryptionInfo.defaultSkipByteBlock=0),t.encryptionInfo.defaultIsProtected=0!==So(e),t.encryptionInfo.defaultPerSampleIvSize=So(e),t.encryptionInfo.defaultKid=_(To(e,16)),t.encryptionInfo.defaultIsProtected&&0===t.encryptionInfo.defaultPerSampleIvSize){const i=So(e),r=new Uint8Array(16);r.set(To(e,i),0),t.encryptionInfo.defaultConstantIv=r}}break;case"avcC":{const t=this.currentTrack;if(!t)break;if(l(t.info),0===X.contentSize)break;t.info.codecDescription=To(e,X.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;if(l(t.info),0===X.contentSize)break;t.info.codecDescription=To(e,X.contentSize)}break;case"vpcC":{const t=this.currentTrack;if(!t)break;l("video"===t.info?.type),e.skip(4);const i=So(e),r=So(e),a=So(e),s=a>>4,n=a>>1&7,o=1&a,c=So(e),u=So(e),d=So(e);t.info.vp9CodecInfo={profile:i,level:r,bitDepth:s,chromaSubsampling:n,videoFullRangeFlag:o,colourPrimaries:c,transferCharacteristics:u,matrixCoefficients:d}}break;case"av1C":{const t=this.currentTrack;if(!t)break;l("video"===t.info?.type),e.skip(1);const i=So(e),r=i>>5,a=31&i,s=So(e),n=s>>7,o=s>>6&1,c=s>>4&1,u=s>>3&1,d=s>>2&1,h=3&s,f=2===r&&o?s>>5&1?12:10:o?10:8;e.skip(1);const m=To(e,X.contentSize-4),p=wt(m);t.info.av1CodecInfo={profile:r,level:a,tier:n,bitDepth:f,monochrome:c,chromaSubsamplingX:u,chromaSubsamplingY:d,chromaSamplePosition:h,videoFullRangeFlag:p?.videoFullRangeFlag??0,colourPrimaries:p?.colourPrimaries??2,transferCharacteristics:p?.transferCharacteristics??2,matrixCoefficients:p?.matrixCoefficients??2}}break;case"colr":{const t=this.currentTrack;if(!t)break;l("video"===t.info?.type);const i=Oo(e,4);if("nclx"!==i&&"nclc"!==i)break;const r=Po(e),a=Po(e),s=Po(e);let n;"nclx"===i&&(n=Boolean(128&So(e))),t.info.colorSpace={primaries:w[r],transfer:S[a],matrix:P[s],fullRange:n}}break;case"pasp":{const t=this.currentTrack;if(!t)break;l("video"===t.info?.type);const i=Bo(e),r=Bo(e);i>0&&r>0&&(i>r?t.info.squarePixelWidth=Math.round(t.info.width*i/r):t.info.squarePixelHeight=Math.round(t.info.height*r/i))}break;case"esds":{const t=this.currentTrack;if(!t||"audio"!==t.info?.type)break;e.skip(4);l(3===So(e)),Bi(e),e.skip(2);const i=So(e),r=0!==(64&i),a=0!==(32&i);if(0!==(128&i)&&e.skip(2),r){const t=So(e);e.skip(t)}a&&e.skip(2);l(4===So(e));const s=Bi(e),n=e.filePos,o=So(e);if(64===o||103===o?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===o,objectType:null}):105===o||107===o?t.info.codec="mp3":221===o?t.info.codec="vorbis":169===o?t.info.codec="dts":xe._warn(`Unsupported audio codec (objectTypeIndication ${o}) - discarding track.`),e.skip(12),s>e.filePos-n){l(5===So(e));const i=Bi(e);if(t.info.codecDescription=To(e,i),"aac"===t.info.codec){const e=Ae(t.info.codecDescription);null!==e.outputNumberOfChannels&&(t.info.numberOfChannels=e.outputNumberOfChannels),null!==e.outputSampleRate&&(t.info.sampleRate=e.outputSampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type),t.info.pcmLittleEndian=!!(255&Po(e))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type),e.skip(4);const i=So(e);t.info.pcmLittleEndian=Boolean(1&i),t.info.pcmSampleSize=So(e)}break;case"dOps":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type),e.skip(1);const i=So(e),r=Po(e),a=Bo(e),s=xo(e),n=So(e);let o;o=0!==n?To(e,2+i):new Uint8Array(0);const c=new Uint8Array(19+o.byteLength),u=new DataView(c.buffer);u.setUint32(0,1332770163,!1),u.setUint32(4,1214603620,!1),u.setUint8(8,1),u.setUint8(9,i),u.setUint16(10,r,!0),u.setUint32(12,a,!0),u.setInt16(16,s,!0),u.setUint8(18,n),c.set(o,19),t.info.codecDescription=c,t.info.numberOfChannels=i}break;case"dfLa":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type),e.skip(4);const i=127,r=128,a=e.filePos;for(;e.filePos>>12,a=1+(i>>9&7);t.info.sampleRate=r,t.info.numberOfChannels=a,e.skip(20)}else e.skip(s);if(a&r)break}const s=e.filePos;e.filePos=a;const n=To(e,s-a),o=new Uint8Array(4+n.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(n,4),t.info.codecDescription=o}break;case"dac3":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type);const i=To(e,3),r=new _e(i),a=r.readBits(2);r.skipBits(8);const s=r.readBits(3),n=r.readBits(1);a<3&&(t.info.sampleRate=Ne[a]),t.info.numberOfChannels=Bt[s]+n}break;case"dec3":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type);const i=(e=>{if(e.length<2)return null;const t=new _e(e),i=t.readBits(13),r=t.readBits(3),a=[];for(let s=0;s<=r&&!(Math.ceil(t.pos/8)+3>e.length);s++){const e=t.readBits(2),i=t.readBits(5);t.skipBits(1),t.skipBits(1);const r=t.readBits(3),s=t.readBits(3),n=t.readBits(1);t.skipBits(3);const o=t.readBits(4);let c=0;o>0?c=t.readBits(9):t.skipBits(1),a.push({fscod:e,fscod2:null,bsid:i,bsmod:r,acmod:s,lfeon:n,numDepSub:o,chanLoc:c})}return 0===a.length?null:{dataRate:i,substreams:a}})(To(e,X.contentSize));if(!i){xe._warn("Invalid dec3 box contents, ignoring.");break}const r=At(i);null!==r&&(t.info.sampleRate=r),t.info.numberOfChannels=Dt(i)}break;case"ddts":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type);const i=(e=>{if(e.length<20)return null;const t=g(e),i=t.getUint32(0);if(0===i)return null;const r=new _e(e);r.seekToByte(13);const a=r.readBits(2);r.skipBits(5);const s=r.readBits(1),n=r.readBits(6);r.skipBits(14),r.skipBits(1),r.skipBits(3);const o=r.readBits(16);let c=null;return 0!==o?c=Xt(o):ne.id===i);if(!r)break;const a=Bo(e),s=(12&a)>>2,n=3&a,o=[So,Po,Io,Bo],c=o[(48&a)>>4],l=o[s],u=o[n],d=Bo(e);for(let h=0;he.timestamp-t.timestamp);for(let e=0;e({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let a=0;ae.id===u);if(!d)break;const h=this.fragmentTrackDefaults.find(e=>e.trackId===u);this.currentTrack=d,d.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:h?.defaultSampleDescriptionIndex??null,defaultSampleDuration:h?.defaultSampleDuration??null,defaultSampleSize:h?.defaultSampleSize??null,defaultSampleFlags:h?.defaultSampleFlags??null,startTimestamp:null,encryptionAuxInfo:null},i?d.currentFragmentState.baseDataOffset=Fo(e):c&&(d.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),r&&(d.currentFragmentState.sampleDescriptionIndex=Bo(e)),a&&(d.currentFragmentState.defaultSampleDuration=Bo(e)),s&&(d.currentFragmentState.defaultSampleSize=Bo(e)),n&&(d.currentFragmentState.defaultSampleFlags=Bo(e)),o&&(d.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;l(t.currentFragmentState);const i=So(e);e.skip(3);const r=0===i?Bo(e):Fo(e);t.currentFragmentState.startTimestamp=r}break;case"trun":{const t=this.currentTrack;if(!t)break;l(this.currentFragment),l(t.currentFragmentState);const i=So(e),r=Io(e),a=Boolean(1&r),s=Boolean(4&r),n=Boolean(256&r),o=Boolean(512&r),c=Boolean(1024&r),u=Boolean(2048&r),d=Bo(e);let h=null;a&&(h=_o(e));let f,m=null;s&&(m=Bo(e)),this.currentFragment.trackData.has(t.id)?(f=this.currentFragment.trackData.get(t.id),null!==h&&(f.currentOffset=t.currentFragmentState.baseDataOffset+h)):(f={track:t,currentTimestamp:0,currentOffset:t.currentFragmentState.baseDataOffset+(h??0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(t.id,f));for(let p=0;p0&&(a=To(e,r));const s=Ji(t);s.defaultSampleInfoSize=i,s.sampleSizes=a,s.sampleCount=r}break;case"saio":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=So(e);if(1&Io(e)){const i=Oo(e,4),r=Bo(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const r=Bo(e);if(0===r)break;r>1&&xe._warn("Multiple saio entries are not supported; using the first offset only.");let a=0===i?Bo(e):Number(Fo(e));this.currentFragment&&(a+=this.currentFragment.moofOffset);Ji(t).offset=a}break;case"senc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;l(this.currentFragment);const i=this.currentFragment.trackData.get(t.id);if(!i)break;e.skip(1);const r=Io(e),a=Boolean(2&r),s=Bo(e),n=t.encryptionInfo.defaultPerSampleIvSize;l(null!==n);for(let o=0;o0?r.set(To(e,n),0):r.set(t.encryptionInfo.defaultConstantIv,0);let s=null;if(a){const t=Po(e);s=[];for(let i=0;i0&&((L=this.metadataTags).trackNumber??(L.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((z=this.metadataTags).tracksTotal??(z.tracksTotal=i))}break;case"trkn":if(a instanceof Uint8Array&&a.length>=6){const e=g(a),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&((U=this.metadataTags).trackNumber??(U.trackNumber=t)),i>0&&((q=this.metadataTags).tracksTotal??(q.tracksTotal=i))}break;case"disc":case"disk":if(a instanceof Uint8Array&&a.length>=6){const e=g(a),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&((W=this.metadataTags).discNumber??(W.discNumber=t)),i>0&&((H=this.metadataTags).discsTotal??(H.discsTotal=i))}}}}}return e.filePos=G,!0}}class Wi{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.tracks)if(r.trackBacking.getType()===t&&i++,r===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){const e=this.internalTrack;if(e.durationInMediaTimescale<=0)return null;l(e.trackBacking);const t=await e.trackBacking.getFirstPacket({metadataOnly:!0});return(t?.timestamp??0)+e.durationInMediaTimescale/e.timescale}async getLiveRefreshInterval(){return null}async getFirstPacket(e){const t=await this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)}mapTimestampIntoTimescale(e){return j(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}async getPacket(e,t){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=ji(r,i),s=await this.fetchPacketForSampleIndex(a,t);return Yi(r)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=A(t.presentationTimestamps,i,e=>e.presentationTimestamp);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=L(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=i);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>r.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.samples.findIndex(e=>e.isKeyFrame);return l(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)}async fetchPacketForSampleIndex(e,t){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=Xi(i,e);if(!r)return null;let a;if(t.metadataOnly)a=Ti;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.sampleOffset,r.sampleSize);if(de(t)&&(t=await t),!t)return null;if(a=To(t,r.sampleSize),this.internalTrack.encryptionInfo){let t=null;if(this.internalTrack.encryptionAuxInfo){const i=await Zi(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);ee.timestamp),d=-1!==u?this.internalTrack.fragmentLookupTable[u]:null,h=A(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),f=-1!==h?this.internalTrack.fragmentPositionCache[h]:null,m=Math.max(d?.moofOffset??0,f?.moofOffset??0)||null;let p;for(e?null===m||e.moofOffset>=m?(p=e.moofOffset+e.moofSize,n=e):p=m:p=m??0;;){if(n){const e=n.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=s.reader.requestSliceRange(p,8,16);if(de(e)&&(e=await e),!e)break;const i=p,l=Ii(e);if(!l)break;if("moof"===l.name){n=await s.readFragment(i);const{sampleIndex:e,correctSampleFound:r}=t(n);if(r)return this.fetchPacketInFragment(n,e,a);-1!==e&&(o=n,c=e)}p=i+l.totalSize}if(d&&(!o||o.moofOffset{var e,t,i,r,a;if("avc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("hevc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo&&(2!==(a=this.internalTrack.info.vp9CodecInfo).colourPrimaries||2!==a.transferCharacteristics||2!==a.matrixCoefficients))if("av1"!==this.internalTrack.info.codec||this.internalTrack.info.av1CodecInfo&&(e=>2!==e.colourPrimaries||2!==e.transferCharacteristics||2!==e.matrixCoefficients)(this.internalTrack.info.av1CodecInfo)){if("prores"===this.internalTrack.info.codec&&!this.internalTrack.info.proresCodecInfo){const e=await this.getFirstPacket({});this.internalTrack.info.proresCodecInfo=e&&Tt(e.data)}}else{const e=await this.getFirstPacket({}),t=e&&wt(e.data);t&&(this.internalTrack.info.av1CodecInfo=t)}else{const e=await this.getFirstPacket({}),t=e&&yt(e.data);t&&(this.internalTrack.info.vp9CodecInfo={...this.internalTrack.info.vp9CodecInfo??t,videoFullRangeFlag:t.videoFullRangeFlag,colourPrimaries:t.colourPrimaries,transferCharacteristics:t.transferCharacteristics,matrixCoefficients:t.matrixCoefficients})}else{const e=await this.getFirstPacket({});this.internalTrack.info.hevcCodecInfo=e&&nt(e.data)}else{const e=await this.getFirstPacket({});this.internalTrack.info.avcCodecInfo=e&&Qe(e.data)}if(!I(this.internalTrack.info.colorSpace)){const a=ai(this.internalTrack.info);(e=this.internalTrack.info.colorSpace).primaries??(e.primaries=a.primaries),(t=this.internalTrack.info.colorSpace).transfer??(t.transfer=a.transfer),(i=this.internalTrack.info.colorSpace).matrix??(i.matrix=a.matrix),(r=this.internalTrack.info.colorSpace).fullRange??(r.fullRange=a.fullRange)}const s={codec:ri(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(s.displayAspectWidth=this.internalTrack.info.squarePixelWidth,s.displayAspectHeight=this.internalTrack.info.squarePixelHeight),s})()):null}}class Vi extends Wi{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=await this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&Vt(e.data)}return{codec:si(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}})()):null}}const ji=(e,t)=>{if(e.presentationTimestamps){const i=A(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===i?-1:e.presentationTimestamps[i].sampleIndex}{const i=A(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===i)return-1;const r=e.sampleTimingEntries[i];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},Ki=(e,t)=>{if(!e.keySampleIndices)return ji(e,t);if(e.presentationTimestamps){const i=A(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===i)return-1;for(let t=i;t>=0;t--){const i=e.presentationTimestamps[t].sampleIndex;if(-1!==F(e.keySampleIndices,i,e=>e))return i}return-1}{const i=ji(e,t),r=A(e.keySampleIndices,i,e=>e);return e.keySampleIndices[r]??-1}},Xi=(e,t)=>{const i=A(e.sampleTimingEntries,t,e=>e.startIndex),r=e.sampleTimingEntries[i];if(!r||r.startIndex+r.count<=t)return null;let a=r.startDecodeTimestamp+(t-r.startIndex)*r.delta;const s=A(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),n=e.sampleCompositionTimeOffsets[s];n&&t-n.startIndexe.startSampleIndex),u=e.sampleToChunk[c];l(u);const d=u.startChunkIndex+Math.floor((t-u.startSampleIndex)/u.samplesPerChunk),h=e.chunkOffsets[d],f=u.startSampleIndex+(d-u.startChunkIndex)*u.samplesPerChunk;let m=0,p=h;if(1===e.sampleSizes.length)p+=o*(t-f),m+=o*u.samplesPerChunk;else for(let l=f;le)}},$i=(e,t)=>{if(!e.keySampleIndices)return t+1;const i=A(e.keySampleIndices,t,e=>e);return e.keySampleIndices[i+1]??-1},Gi=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const i of e.samples)i.presentationTimestamp+=t;for(const i of e.presentationTimestamps)i.presentationTimestamp+=t},Qi=e=>{const[t,i]=e,r=Math.atan2(i,t);return Number.isFinite(r)?r*(180/Math.PI):0},Yi=e=>0===e.sampleSizes.length,Ji=e=>{var t;return e.currentFragmentState?(t=e.currentFragmentState).encryptionAuxInfo??(t.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}):e.encryptionAuxInfo??(e.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null})},Zi=async(e,t,i)=>{if(i.resolved)return i.resolved;if(null===i.offset||0===i.sampleCount)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(i.defaultSampleInfoSize>0)r=i.defaultSampleInfoSize*i.sampleCount;else{l(i.sampleSizes);for(let e=0;e0?i.defaultSampleInfoSize:i.sampleSizes[o],r=new Uint8Array(16);s>0?r.set(To(a,s),0):r.set(t.defaultConstantIv,0);let c=null;if(e>s){const e=Po(a);c=[];for(let t=0;te.defaultConstantIv?{iv:e.defaultConstantIv,subsamples:null}:null,tr=async(e,t,i,r)=>{l(e.encryptionInfo);const a=e.encryptionInfo;l(null!==a.defaultKid);const s=a.defaultKid;let n;const o=e.demuxer.decryptionKeyCache.get(s);if(o)n=await o;else{if(!e.demuxer.input._formatOptions.isobmff?.resolveKeyId)throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");const t=(async()=>{let t=e.demuxer.psshBoxes;if(r){t=[...t,...r.psshBoxes].filter(e=>null===e.keyIds||e.keyIds.includes(s));for(let e=0;e{l(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;i{const a=new Uint8Array(16);a.set(i.iv,0);const s=await crypto.subtle.importKey("raw",e,{name:"AES-CTR"},!1,["decrypt"]),n=async e=>{const t=await crypto.subtle.decrypt({name:"AES-CTR",counter:a,length:64},s,e);return new Uint8Array(t)};if(!i.subsamples)return n(r);l(null!==t.defaultCryptByteBlock&&null!==t.defaultSkipByteBlock);const o=ar(i.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock);let c=0;for(const l of o)for(const e of l.perSubsample)c+=e.length;const u=new Uint8Array(c);let d=0;for(const l of o)for(const e of l.perSubsample)u.set(r.subarray(e.offset,e.offset+e.length),d),d+=e.length;const h=await n(u),f=new Uint8Array(r);let m=0;for(const l of o)for(const e of l.perSubsample)f.set(h.subarray(m,m+e.length),e.offset),m+=e.length;return f},rr=(e,t,i,r)=>{const a=new Ui;a.init({key:e,iv:i.iv});const s=t.defaultCryptByteBlock,n=t.defaultSkipByteBlock;if(l(null!==s&&null!==n),!i.subsamples){const e=new Uint8Array(r),t=Math.floor(r.length/16);for(let i=0;i{const r=[],a=0!==t||0!==i;let s=0;for(const n of e){s+=n.clearLen;const e=[];if(a){let r=n.protectedLen,a=s;for(;r>0&&!(r<16*t);){const s=16*t;e.push({offset:a,length:s}),a+=s,r-=s;const n=Math.min(16*i,r);a+=n,r-=n}s+=n.protectedLen}else n.protectedLen>0&&e.push({offset:s,length:n.protectedLen}),s+=n.protectedLen;r.push({perSubsample:e})}return r};var sr,nr;(nr=sr||(sr={}))[nr.EBML=440786851]="EBML",nr[nr.EBMLVersion=17030]="EBMLVersion",nr[nr.EBMLReadVersion=17143]="EBMLReadVersion",nr[nr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",nr[nr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",nr[nr.DocType=17026]="DocType",nr[nr.DocTypeVersion=17031]="DocTypeVersion",nr[nr.DocTypeReadVersion=17029]="DocTypeReadVersion",nr[nr.Void=236]="Void",nr[nr.Segment=408125543]="Segment",nr[nr.SeekHead=290298740]="SeekHead",nr[nr.Seek=19899]="Seek",nr[nr.SeekID=21419]="SeekID",nr[nr.SeekPosition=21420]="SeekPosition",nr[nr.Duration=17545]="Duration",nr[nr.Info=357149030]="Info",nr[nr.TimestampScale=2807729]="TimestampScale",nr[nr.MuxingApp=19840]="MuxingApp",nr[nr.WritingApp=22337]="WritingApp",nr[nr.Tracks=374648427]="Tracks",nr[nr.TrackEntry=174]="TrackEntry",nr[nr.TrackNumber=215]="TrackNumber",nr[nr.TrackUID=29637]="TrackUID",nr[nr.TrackType=131]="TrackType",nr[nr.FlagEnabled=185]="FlagEnabled",nr[nr.FlagDefault=136]="FlagDefault",nr[nr.FlagForced=21930]="FlagForced",nr[nr.FlagOriginal=21934]="FlagOriginal",nr[nr.FlagHearingImpaired=21931]="FlagHearingImpaired",nr[nr.FlagVisualImpaired=21932]="FlagVisualImpaired",nr[nr.FlagCommentary=21935]="FlagCommentary",nr[nr.FlagLacing=156]="FlagLacing",nr[nr.Name=21358]="Name",nr[nr.Language=2274716]="Language",nr[nr.LanguageBCP47=2274717]="LanguageBCP47",nr[nr.CodecID=134]="CodecID",nr[nr.CodecPrivate=25506]="CodecPrivate",nr[nr.CodecDelay=22186]="CodecDelay",nr[nr.SeekPreRoll=22203]="SeekPreRoll",nr[nr.DefaultDuration=2352003]="DefaultDuration",nr[nr.Video=224]="Video",nr[nr.PixelWidth=176]="PixelWidth",nr[nr.PixelHeight=186]="PixelHeight",nr[nr.DisplayWidth=21680]="DisplayWidth",nr[nr.DisplayHeight=21690]="DisplayHeight",nr[nr.DisplayUnit=21682]="DisplayUnit",nr[nr.AlphaMode=21440]="AlphaMode",nr[nr.Audio=225]="Audio",nr[nr.SamplingFrequency=181]="SamplingFrequency",nr[nr.Channels=159]="Channels",nr[nr.BitDepth=25188]="BitDepth",nr[nr.SimpleBlock=163]="SimpleBlock",nr[nr.BlockGroup=160]="BlockGroup",nr[nr.Block=161]="Block",nr[nr.BlockAdditions=30113]="BlockAdditions",nr[nr.BlockMore=166]="BlockMore",nr[nr.BlockAdditional=165]="BlockAdditional",nr[nr.BlockAddID=238]="BlockAddID",nr[nr.BlockDuration=155]="BlockDuration",nr[nr.ReferenceBlock=251]="ReferenceBlock",nr[nr.Cluster=524531317]="Cluster",nr[nr.Timestamp=231]="Timestamp",nr[nr.Cues=475249515]="Cues",nr[nr.CuePoint=187]="CuePoint",nr[nr.CueTime=179]="CueTime",nr[nr.CueTrackPositions=183]="CueTrackPositions",nr[nr.CueTrack=247]="CueTrack",nr[nr.CueClusterPosition=241]="CueClusterPosition",nr[nr.Colour=21936]="Colour",nr[nr.MatrixCoefficients=21937]="MatrixCoefficients",nr[nr.TransferCharacteristics=21946]="TransferCharacteristics",nr[nr.Primaries=21947]="Primaries",nr[nr.Range=21945]="Range",nr[nr.Projection=30320]="Projection",nr[nr.ProjectionType=30321]="ProjectionType",nr[nr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",nr[nr.Attachments=423732329]="Attachments",nr[nr.AttachedFile=24999]="AttachedFile",nr[nr.FileDescription=18046]="FileDescription",nr[nr.FileName=18030]="FileName",nr[nr.FileMediaType=18016]="FileMediaType",nr[nr.FileData=18012]="FileData",nr[nr.FileUID=18094]="FileUID",nr[nr.Chapters=272869232]="Chapters",nr[nr.Tags=307544935]="Tags",nr[nr.Tag=29555]="Tag",nr[nr.Targets=25536]="Targets",nr[nr.TargetTypeValue=26826]="TargetTypeValue",nr[nr.TargetType=25546]="TargetType",nr[nr.TagTrackUID=25541]="TagTrackUID",nr[nr.TagEditionUID=25545]="TagEditionUID",nr[nr.TagChapterUID=25540]="TagChapterUID",nr[nr.TagAttachmentUID=25542]="TagAttachmentUID",nr[nr.SimpleTag=26568]="SimpleTag",nr[nr.TagName=17827]="TagName",nr[nr.TagLanguage=17530]="TagLanguage",nr[nr.TagString=17543]="TagString",nr[nr.TagBinary=17541]="TagBinary",nr[nr.ContentEncodings=28032]="ContentEncodings",nr[nr.ContentEncoding=25152]="ContentEncoding",nr[nr.ContentEncodingOrder=20529]="ContentEncodingOrder",nr[nr.ContentEncodingScope=20530]="ContentEncodingScope",nr[nr.ContentCompression=20532]="ContentCompression",nr[nr.ContentCompAlgo=16980]="ContentCompAlgo",nr[nr.ContentCompSettings=16981]="ContentCompSettings",nr[nr.ContentEncryption=20533]="ContentEncryption";const or=[sr.EBML,sr.Segment],cr=[sr.SeekHead,sr.Info,sr.Cluster,sr.Tracks,sr.Cues,sr.Attachments,sr.Chapters,sr.Tags],lr=[...or,...cr],ur=16,dr=e=>{if(e.remainingLength<1)return null;const t=So(e);if(e.skip(-1),0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;return e.remainingLength{if(e.remainingLength<1)return null;const t=So(e);if(0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;if(e.remainingLength{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r{const t=dr(e);if(null===t)return null;if(e.remainingLength{if(e.remainingLength<1)return null;if(255===So(e))return;e.skip(-1);const t=hr(e);return null===t?null:72057594037927940!==t?t:void 0},gr=e=>{l(e.remainingLength>=2);const t=mr(e);if(null===t)return null;const i=pr(e);return null===i?null:{id:t,size:i}},kr=(e,t)=>{const i=To(e,t);let r=0;for(;r{const i=To(e,t);let r=0;for(;r{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?Mo(e):No(e)},wr=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;null===r||ss?r:s,found:!1}},Tr=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;se.tracks.map(e=>e.trackBacking))}async getMimeType(){await this.readMetadata();const e=await this.getTrackBackings(),t=await Promise.all(e.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>"video"===e.info?.type)),hasAudio:this.segments.some(e=>e.tracks.some(e=>"audio"===e.info?.type)),codecStrings:t.filter(Boolean)})}async getMetadataTags(){await this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&await this.loadSegmentMetadata(t),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e={...e,...t.metadataTags};return e}readMetadata(){return this.readMetadataPromise??(this.readMetadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,ur);if(de(t)&&(t=await t),!t)break;const i=gr(t);if(!i)break;const r=i.id;let a=i.size;const s=t.filePos;if(r===sr.EBML){Nr(a);let e=this.reader.requestSlice(s,a);if(de(e)&&(e=await e),!e)break;this.readContiguousElements(e)}else if(r===sr.Segment){if(await this.readSegment(s,a),void 0===a)break;if(null===this.reader.fileSize)break}else if(r===sr.Cluster){if(null===this.reader.fileSize)break;if(void 0===a){a=(await wr(this.reader,s,lr,this.reader.fileSize)).pos-s}const e=d(this.segments);e&&(e.elementEndPos=s+a)}Nr(a),e=s+a}})())}async readSegment(e,t){this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let i=e;for(;null===this.currentSegment.elementEndPos||ie.id===a);if(-1!==o){const e=Hr[o].flag;this.currentSegment[e]=!0,Nr(s);let t=this.reader.requestSlice(n,s);de(t)&&(t=await t),t&&this.readContiguousElements(t)}else if(a===sr.Tags||a===sr.Attachments){a===sr.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,Nr(s);let e=this.reader.requestSlice(n,s);de(e)&&(e=await e),e&&this.readContiguousElements(e)}else if(a===sr.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===s)break;i=n+s}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const n of this.currentSegment.seekEntries){const t=Hr.find(e=>e.id===n.id);if(!t)continue;if(this.currentSegment[t.flag])continue;let i=this.reader.requestSliceRange(e+n.segmentPosition,2,ur);if(de(i)&&(i=await i),!i)continue;const r=gr(i);if(!r)continue;const{id:a,size:s}=r;if(a!==t.id)continue;Nr(s),this.currentSegment[t.flag]=!0;let o=this.reader.requestSlice(i.filePos,s);de(o)&&(o=await o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const n of this.currentSegment.tracks)null!==n.defaultDurationNs&&(n.defaultDuration=this.currentSegment.timestampFactor*n.defaultDurationNs/1e9);const r=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const n of this.currentSegment.cuePoints){const e=r.get(n.trackId);e&&e.cuePoints.push(n)}for(const n of this.currentSegment.tracks){n.cuePoints.sort((e,t)=>e.time-t.time);for(let e=0;es&&(s=n.cuePoints.length,a=n);for(const n of this.currentSegment.tracks)0===n.cuePoints.length&&(n.cuePoints=a.cuePoints);this.currentSegment=null}async readCluster(e,t){if(t.lastReadCluster?.elementStartPos===e)return t.lastReadCluster;let i=this.reader.requestSliceRange(e,2,ur);de(i)&&(i=await i),l(i);const r=e,a=gr(i);l(a);l(a.id===sr.Cluster);let s=a.size;const n=i.filePos;if(void 0===s){s=(await wr(this.reader,n,lr,t.elementEndPos)).pos-n}let o=this.reader.requestSlice(n,s);de(o)&&(o=await o);const c={segment:t,elementStartPos:r,elementEndPos:n+s,dataStartPos:n,timestamp:-1,trackData:new Map};if(this.currentCluster=c,o){const e=this.readContiguousElements(o,lr);c.elementEndPos=e}for(const[,u]of c.trackData){const e=u.track;l(u.blocks.length>0);let t=!1;for(let r=0;r({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let r=0;r({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const i=u.blocks[u.presentationTimestamps[0].blockIndex],a=u.blocks[d(u.presentationTimestamps).blockIndex];u.startTimestamp=i.timestamp,u.endTimestamp=a.timestamp+a.duration;const s=A(e.clusterPositionCache,u.startTimestamp,e=>e.startTimestamp);-1!==s&&e.clusterPositionCache[s].elementStartPos===r||e.clusterPositionCache.splice(s+1,0,{elementStartPos:c.elementStartPos,startTimestamp:u.startTimestamp})}return t.lastReadCluster=c,c}getTrackDataInCluster(e,t){let i=e.trackData.get(t);if(!i){const r=e.segment.tracks.find(e=>e.id===t);if(!r)return null;i={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,i)}return i}expandLacedBlocks(e,t){for(let i=0;i=2;){const i=e.filePos;if(!this.traverseElement(e,t))return i}return e.filePos}traverseElement(e,t){const i=gr(e);if(!i)return!1;if(t&&t.includes(i.id))return!1;const{id:r,size:a}=i,s=e.filePos;switch(Nr(a),r){case sr.DocType:this.isWebM="webm"===kr(e,a);break;case sr.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(s,a)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case sr.SeekID:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=fr(e,a)}break;case sr.SeekPosition:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=fr(e,a)}break;case sr.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=fr(e,a),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case sr.Duration:if(!this.currentSegment)break;this.currentSegment.duration=br(e,a);break;case sr.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:{...Ee,primary:!1},trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(s,a)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>"decompress"!==e.data?.type||e.scope!==zr.Block||e.data.algorithm!==qr.HeaderStripping)&&(xe._warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,null!==this.currentTrack.info.displayWidth&&null!==this.currentTrack.info.displayHeight){const e=this.currentTrack.info.displayWidth*this.currentTrack.info.height,t=this.currentTrack.info.displayHeight*this.currentTrack.info.width;e>0&&t>0&&(e>t?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*e/t):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*t/e))}if(this.currentTrack.codecId===Sr)this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(this.currentTrack.codecId===vr)this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(t===Pr)this.currentTrack.info.codec="vp8";else if(t===Ir)this.currentTrack.info.codec="vp9";else if(t===xr)this.currentTrack.info.codec="av1";else if(t===Cr){const e=this.currentTrack.codecPrivate?k.decode(this.currentTrack.codecPrivate):"";ti.includes(e)&&(this.currentTrack.info.codec="prores",this.currentTrack.info.proresFormat=e)}const e=this.currentTrack;this.currentTrack.trackBacking=new Xr(e),this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type){t===Br?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Er?this.currentTrack.info.codec="mp3":t===_r?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=ni):t===Rr?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Fr?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Ar?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Dr?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Mr?(this.currentTrack.info.codec="dts","A_DTS/EXPRESS"===this.currentTrack.codecId?this.currentTrack.info.dtsFormat="dtse":"A_DTS/LOSSLESS"===this.currentTrack.codecId&&(this.currentTrack.info.dtsFormat="dtsl")):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack;this.currentTrack.trackBacking=new $r(e),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case sr.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=fr(e,a);break;case sr.TrackType:{if(!this.currentTrack)break;const t=fr(e,a);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:{...x},alphaMode:!1,proresFormat:null}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null})}break;case sr.FlagEnabled:if(!this.currentTrack)break;fr(e,a)||(this.currentTrack=null);break;case sr.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!fr(e,a);break;case sr.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!fr(e,a);break;case sr.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!fr(e,a);break;case sr.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!fr(e,a);break;case sr.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!fr(e,a);break;case sr.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!fr(e,a);break;case sr.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=kr(e,a);break;case sr.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=To(e,a);break;case sr.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=fr(e,a);break;case sr.Name:if(!this.currentTrack)break;this.currentTrack.name=yr(e,a);break;case sr.Language:if(!this.currentTrack)break;if(this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=kr(e,a),Y(this.currentTrack.languageCode)||(this.currentTrack.languageCode=V);break;case sr.LanguageBCP47:{if(!this.currentTrack)break;const t=kr(e,a).split("-")[0];this.currentTrack.languageCode=t||V,this.currentTrack.hasLanguageBcp47=!0}break;case sr.Video:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case sr.PixelWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.width=fr(e,a);break;case sr.PixelHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.height=fr(e,a);break;case sr.DisplayWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayWidth=fr(e,a);break;case sr.DisplayHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayHeight=fr(e,a);break;case sr.DisplayUnit:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayUnit=fr(e,a);break;case sr.AlphaMode:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.alphaMode=1===fr(e,a);break;case sr.Colour:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case sr.MatrixCoefficients:{if("video"!==this.currentTrack?.info?.type)break;const t=fr(e,a),i=P[t];this.currentTrack.info.colorSpace.matrix=i}break;case sr.Range:{if("video"!==this.currentTrack?.info?.type)break;const t=fr(e,a);this.currentTrack.info.colorSpace.fullRange=1===t||2===t?2===t:void 0}break;case sr.TransferCharacteristics:{if("video"!==this.currentTrack?.info?.type)break;const t=fr(e,a),i=S[t];this.currentTrack.info.colorSpace.transfer=i}break;case sr.Primaries:{if("video"!==this.currentTrack?.info?.type)break;const t=fr(e,a),i=w[t];this.currentTrack.info.colorSpace.primaries=i}break;case sr.Projection:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case sr.ProjectionPoseRoll:{if("video"!==this.currentTrack?.info?.type)break;const t=-br(e,a);try{this.currentTrack.info.rotation=u(t)}catch{}}break;case sr.Audio:if("audio"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case sr.SamplingFrequency:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.sampleRate=br(e,a);break;case sr.Channels:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.numberOfChannels=fr(e,a);break;case sr.BitDepth:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.bitDepth=fr(e,a);break;case sr.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(s,a)),this.currentCueTime=null;break;case sr.CueTime:this.currentCueTime=fr(e,a);break;case sr.CueTrackPositions:{if(null===this.currentCueTime)break;l(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(s,a)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case sr.CueTrack:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=fr(e,a)}break;case sr.CueClusterPosition:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;l(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+fr(e,a)}break;case sr.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=fr(e,a);break;case sr.SimpleBlock:{if(!this.currentCluster)break;const t=hr(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=xo(e),n=So(e),o=n>>1&3;let c=!!(128&n);"audio"===i.track.info?.type&&i.track.info.codec&&(c=!0);const l=To(e,a-(e.filePos-s)),u=i.track.decodingInstructions.length>0;i.blocks.push({timestamp:r,duration:0,isKeyFrame:c,data:l,lacing:o,decoded:!u,postProcessed:!1,mainAdditional:null})}break;case sr.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(s,a)),this.currentBlock=null;break;case sr.Block:{if(!this.currentCluster)break;const t=hr(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=xo(e),n=So(e)>>1&3,o=To(e,a-(e.filePos-s)),c=i.track.decodingInstructions.length>0;this.currentBlock={timestamp:r,duration:0,isKeyFrame:!0,data:o,lacing:n,decoded:!c,postProcessed:!1,mainAdditional:null},i.blocks.push(this.currentBlock)}break;case sr.BlockAdditions:this.readContiguousElements(e.slice(s,a));break;case sr.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(s,a)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case sr.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=To(e,a);break;case sr.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=fr(e,a);break;case sr.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=fr(e,a);break;case sr.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case sr.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(s,a));break;case sr.Targets:this.readContiguousElements(e.slice(s,a));break;case sr.TargetTypeValue:50!==fr(e,a)&&(this.currentTagTargetIsMovie=!1);break;case sr.TagTrackUID:case sr.TagEditionUID:case sr.TagChapterUID:case sr.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case sr.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(s,a));break;case sr.TagName:this.currentSimpleTagName=yr(e,a);break;case sr.TagString:{if(!this.currentSimpleTagName)break;const t=yr(e,a);this.processTagValue(this.currentSimpleTagName,t)}break;case sr.TagBinary:{if(!this.currentSimpleTagName)break;const t=To(e,a);this.processTagValue(this.currentSimpleTagName,t)}break;case sr.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(s,a));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(t.raw??(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new Be(this.currentAttachedFile.fileData,this.currentAttachedFile.fileMediaType??void 0,this.currentAttachedFile.fileName??void 0,this.currentAttachedFile.fileDescription??void 0)),this.currentAttachedFile.fileMediaType?.startsWith("image/")&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let i="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?i="coverFront":t.startsWith("back.")&&(i="coverBack")}t.images??(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:i,name:this.currentAttachedFile.fileName??void 0,description:this.currentAttachedFile.fileDescription??void 0})}this.currentAttachedFile=null}break;case sr.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let i=0n;for(let r=0;rt.order-e.order);break;case sr.ContentEncoding:this.currentDecodingInstruction={order:0,scope:zr.Block,data:null},this.readContiguousElements(e.slice(s,a)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case sr.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=fr(e,a);break;case sr.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=fr(e,a);break;case sr.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:qr.Zlib,settings:null},this.readContiguousElements(e.slice(s,a));break;case sr.ContentCompAlgo:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.algorithm=fr(e,a);break;case sr.ContentCompSettings:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.settings=To(e,a);break;case sr.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=s+a,!0}decodeBlockData(e,t){l(e.decodingInstructions.length>0);let i=t;for(const r of e.decodingInstructions)if(l(r.data),"decompress"===r.data.type)if(r.data.algorithm===qr.HeaderStripping)if(r.data.settings&&r.data.settings.length>0){const e=r.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var i;if(!this.currentSegment?.metadataTags)return;const r=this.currentSegment.metadataTags;if(r.raw??(r.raw={}),(i=r.raw)[e]??(i[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":r.title??(r.title=t);break;case"description":r.description??(r.description=t);break;case"artist":r.artist??(r.artist=t);break;case"album":r.album??(r.album=t);break;case"album_artist":r.albumArtist??(r.albumArtist=t);break;case"genre":r.genre??(r.genre=t);break;case"comment":r.comment??(r.comment=t);break;case"lyrics":r.lyrics??(r.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||(r.date??(r.date=e))}break;case"track_number":case"part_number":{const e=t.split("/"),i=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(r.trackNumber??(r.trackNumber=i)),a&&Number.isInteger(a)&&a>0&&(r.tracksTotal??(r.tracksTotal=a))}break;case"disc_number":case"disc":{const e=t.split("/"),i=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(r.discNumber??(r.discNumber=i)),a&&Number.isInteger(a)&&a>0&&(r.discsTotal??(r.discsTotal=a))}}}async getDurationFromMetadata(e){if(e.duration<=0)return null;let t=null;for(const r of e.tracks){l(r.trackBacking);const e=await r.trackBacking.getFirstPacket({metadataOnly:!0});e&&(t=Math.min(t??1/0,e.timestamp))}let i=e.duration/e.timestampFactor;return i+=t??0,i}}class Kr{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.segments)for(const e of r.tracks)if(e.trackBacking.getType()===t&&i++,e===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return this.internalTrack.demuxer.getDurationFromMetadata(this.internalTrack.segment)}async getLiveRefreshInterval(){return null}async getFirstPacket(e){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)}intoTimescale(e){return j(e*this.internalTrack.segment.timestampFactor)}async getPacket(e,t){const i=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=A(t.presentationTimestamps,i,e=>e.timestamp);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=L(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=i);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.blocks.findIndex(e=>e.isKeyFrame);return l(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)}async fetchPacketInCluster(e,t,i){if(-1===t)return null;const r=e.trackData.get(this.internalTrack.id).blocks[t];if(l(r),r.decoded||(r.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,r.data),r.decoded=!0),!r.postProcessed){if("prores"===this.internalTrack.info?.codec){if(!(r.data.length>=8&&105===r.data[4]&&99===r.data[5]&&112===r.data[6]&&102===r.data[7])){const e=new Uint8Array(r.data.length+8);g(e).setUint32(0,e.length,!1),e[4]=105,e[5]=99,e[6]=112,e[7]=102,e.set(r.data,8),r.data=e}}r.postProcessed=!0}const a=i.metadataOnly?Ti:r.data,s=r.timestamp/this.internalTrack.segment.timestampFactor,n=r.duration/this.internalTrack.segment.timestampFactor,o={};r.mainAdditional&&"video"===this.internalTrack.info?.type&&this.internalTrack.info.alphaMode&&(o.alpha=i.metadataOnly?Ti:r.mainAdditional,o.alphaByteLength=r.mainAdditional.byteLength);const c=new Si(a,r.isKeyFrame?"key":"delta",s,n,e.dataStartPos+t,r.data.byteLength,o);return this.packetToClusterLocation.set(c,{cluster:e,blockIndex:t}),c}async performClusterLookup(e,t,i,r,a){const{demuxer:s,segment:n}=this.internalTrack;let o=null,c=null,u=-1;if(e){const{blockIndex:i,correctBlockFound:r}=t(e);if(r)return this.fetchPacketInCluster(e,i,a);-1!==i&&(c=e,u=i)}const d=A(this.internalTrack.cuePoints,i,e=>e.time),h=-1!==d?this.internalTrack.cuePoints[d]:null,f=A(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),m=-1!==f?this.internalTrack.clusterPositionCache[f]:null,p=Math.max(h?.clusterPosition??0,m?.elementStartPos??0)||null;let g;for(e?null===p||e.elementStartPos>=p?(g=e.elementEndPos,o=e):g=p:g=p??n.clusterSeekStartPos;null===n.elementEndPos||g<=n.elementEndPos-2;){if(o){const e=o.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=s.reader.requestSliceRange(g,2,ur);if(de(e)&&(e=await e),!e)break;const i=g,d=gr(e);if(!d||!cr.includes(d.id)&&d.id!==sr.Void){const e=await Tr(s.reader,i,cr,Math.min(n.elementEndPos??1/0,i+Vr));if(e){g=e;continue}break}const h=d.id;let f=d.size;const m=e.filePos;if(h===sr.Cluster){o=await s.readCluster(i,n),f=o.elementEndPos-m;const{blockIndex:e,correctBlockFound:r}=t(o);if(r)return this.fetchPacketInCluster(o,e,a);-1!==e&&(c=o,u=e)}if(void 0===f){l(h!==sr.Cluster);f=(await wr(s.reader,m,lr,n.elementEndPos)).pos-m}const p=m+f;if(null===n.elementEndPos){let e=s.reader.requestSliceRange(p,2,ur);if(de(e)&&(e=await e),!e)break;if(mr(e)===sr.Segment){n.elementEndPos=p;break}}g=p}if(h&&(!c||c.elementStartPos{var e,t,i,r;let a=null;("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"prores"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(a=await this.getFirstPacket({}));const s={width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&a?Qe(a.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&a?nt(a.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&a?yt(a.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&a?wt(a.data):null,proresCodecInfo:"prores"===this.internalTrack.info.codec&&a?Tt(a.data):null,proresFormat:this.internalTrack.info.proresFormat};if(!I(this.internalTrack.info.colorSpace)){const a=ai(s);(e=this.internalTrack.info.colorSpace).primaries??(e.primaries=a.primaries),(t=this.internalTrack.info.colorSpace).transfer??(t.transfer=a.transfer),(i=this.internalTrack.info.colorSpace).matrix??(i.matrix=a.matrix),(r=this.internalTrack.info.colorSpace).fullRange??(r.fullRange=a.fullRange)}const n={codec:ri(s),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(n.displayAspectWidth=this.internalTrack.info.squarePixelWidth,n.displayAspectHeight=this.internalTrack.info.squarePixelHeight),n})()):null}}class $r extends Kr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=await this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&Vt(e.data)}return{codec:si({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo,dtsFormat:this.internalTrack.info.dtsFormat}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}})()):null}}const Gr=async(e,t,i,r=null)=>{let a=t;for(;null===i||a=4;){const t=s.filePos,i=Bo(s),n=null!==e.fileSize?e.fileSize-a:null,o=pi(i,n);if(o.header&&(!r||o.header.sampleRate===r.sampleRate&&o.header.mpegVersionId===r.mpegVersionId&&o.header.layer===r.layer&&bi(o.header.channel)===bi(r.channel)))return{header:o.header,startPos:a};s.filePos=t+o.bytesAdvanced,a=s.filePos}}return null};class Qr extends wi{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.firstFrameHeaderPos=null,this.xingFrameHeader=null,this.xingFrameHeaderPos=null,this.loadedSamples=[],this.metadataTags=null,this.xingData=null,this.trackBackings=[],this.readingMutex=new B,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();if(!this.firstFrameHeader&&this.xingFrameHeader&&(this.firstFrameHeader=this.xingFrameHeader,this.firstFrameHeaderPos=this.xingFrameHeaderPos),!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.trackBackings=[new Yr(this)]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,Vo);if(de(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=$o(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=await Gr(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const i=mi(t.mpegVersionId,t.channel);let r=this.reader.requestSlice(e.startPos+i,4);if(de(r)&&(r=await r),r){const a=Bo(r);if(a===hi||a===fi){if(this.xingFrameHeader||(this.xingFrameHeader=t,this.xingFrameHeaderPos=e.startPos),!this.xingData){let t=this.reader.requestSlice(e.startPos+i+4,12);if(de(t)&&(t=await t),t){const e=To(t,12),i=g(e),r=i.getUint32(0,!1);this.xingData={frameCount:r&ki.FrameCount?i.getUint32(4,!1):null,fileSize:r&ki.FileSize?i.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=t,this.firstFrameHeaderPos=e.startPos);const a=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,s={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:a,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(s),this.nextTimestampInSamples+=t.audioSamplesInFrame}async getMimeType(){return"audio/mpeg"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let i=this.reader.requestSlice(e,Vo);if(de(i)&&(i=await i),!i)break;const r=$o(i);if(!r)break;t=!0;let a=this.reader.requestSlice(i.filePos,r.size);if(de(a)&&(a=await a),!a)break;Go(a,r,this.metadataTags),e=i.filePos+r.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=Ho){let e=this.reader.requestSlice(this.reader.fileSize-Ho,Ho);de(e)&&(e=await e),l(e);"TAG"===Oo(e,3)&&Ko(e,this.metadataTags)}return this.metadataTags}finally{e()}}}class Yr{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return l(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){const e=this.demuxer;if(l(null!==e.firstFrameHeader),l(null!==e.firstFrameHeaderPos),e.xingData){if(null!==e.xingData.frameCount)return e.xingData.frameCount*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}else if(null!==e.reader.fileSize){const s=(t=e.firstFrameHeader.lowSamplingFrequency,i=e.firstFrameHeader.layer,r=e.firstFrameHeader.bitrate,a=e.firstFrameHeader.sampleRate,0===i?0:1===i?144*r/(a<e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}}async getPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=A(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1>>0&4294967295}const ea=e=>{const t=g(e),i=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let a=0;a>>24^t])>>>0}return t.setUint32(22,i,!0),r},ta=(e,t,i)=>{let r=0,a=null;if(e.length>0)if("vorbis"===t.codec){l(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,n=(e[0]&s)>>1;if(n>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=i;const c=t.vorbisInfo.modeBlockflags[n];if(a=t.vorbisInfo.blocksizes[c],1===c){const i=1+(1|s),r=e[0]&i?1:0;o=t.vorbisInfo.blocksizes[r]}r=null!==o?o+a>>2:0}else if("opus"===t.codec){r=(e=>{const t=e[0]>>3,i=3&e[0];let r;return r=0===i?1:1===i||2===i?2:63&e[1],{durationInSamples:St[t]*r}})(e).durationInSamples}return{durationInSamples:r,vorbisBlockSize:a}},ia=27,ra=282,aa=e=>{const t=e.filePos;if(Eo(e)!==Jr)return null;e.skip(1);const i=So(e),r=Do(e),a=Eo(e),s=Eo(e),n=Eo(e),o=So(e),c=new Uint8Array(o);for(let d=0;de+t,0);return{headerStartPos:t,totalSize:l+u,dataStartPos:t+l,dataSize:u,headerType:i,granulePosition:r,serialNumber:a,sequenceNumber:s,checksum:n,lacingValues:c}},sa=(e,t)=>{for(;e.filePos>>8&255)===i||(t>>>16&255)===i||(t>>>24&255)===i){if(e.skip(-4),t===Jr)return!0;e.skip(1)}}return!1};class na extends wi{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.trackBackings=[],this.metadataTags={},this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,ia,ra);if(de(t)&&(t=await t),!t)break;const i=aa(t);if(!i)break;if(!!!(2&i.headerType))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(const t of this.bitstreams){const e=await this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?await this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&await this.readOpusMetadata(e,t),null!==t.codecInfo.codec&&this.trackBackings.push(new oa(t,this)))}})())}async readVorbisMetadata(e,t){let i=await this.findNextPacketStart(e);if(!i)return;const r=await this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;if(i=await this.findNextPacketStart(r),!i)return;const a=await this.readPacket(i.startPage,i.startSegmentIndex);if(!a)return;if(3!==r.data[0]||5!==a.data[0])return;const s=[],n=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};n(e.data.length),n(r.data.length);const o=new Uint8Array(1+s.length+e.data.length+r.data.length+a.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(r.data,1+s.length+e.data.length),o.set(a.data,1+s.length+e.data.length+r.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=a;const c=g(e.data);t.numberOfChannels=c.getUint8(11),t.sampleRate=c.getUint32(12,!0);const l=c.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&l),1<<(l>>4)],modeBlockflags:vt(a.data).modeBlockflags},Ct(r.data.subarray(7),this.metadataTags)}async readOpusMetadata(e,t){const i=await this.findNextPacketStart(e);if(!i)return;const r=await this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=r;const a=(e=>{const t=g(e),i=t.getUint8(9),r=t.getUint16(10,!0),a=t.getUint32(12,!0),s=t.getInt16(16,!0),n=t.getUint8(18);let o=null;return n&&(o=e.subarray(19,21+i)),{outputChannelCount:i,preSkip:r,inputSampleRate:a,outputGain:s,channelMappingFamily:n,channelMappingTable:o}})(e.data);t.numberOfChannels=a.outputChannelCount,t.sampleRate=ni,t.codecInfo.opusInfo={preSkip:a.preSkip},Ct(r.data.subarray(8),this.metadataTags)}async readPacket(e,t){l(te+t.length,0);if(0===o)return null;const c=new Uint8Array(o);let u=0;for(let l=0;l{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(await Promise.all(this.trackBackings.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)))).filter(Boolean)})}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}class oa{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new B,this.internalSampleRate="opus"===e.codecInfo.codec?ni:e.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){const e=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return l(-1!==e),e+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}async getDecoderConfig(){return l(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:this.bitstream.description??void 0}}getName(){return null}getLanguageCode(){return V}getDisposition(){return{...Ee,primary:!1}}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(l(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,i){if(!e)return null;const{durationInSamples:r,vorbisBlockSize:a}=ta(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new Si(i.metadataOnly?Ti:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,r/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:r,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:a}),s}async getFirstPacket(e){l(this.bitstream.lastMetadataPacket);const t=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(l(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const r=await this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(r,{timestampInSamples:i,vorbisLastBlocksize:null},e)}async getNextPacket(e,t){const i=this.encodedPacketToMetadata.get(e);if(!i)throw new Error("Packet was not created from this track.");const r=await this.demuxer.findNextPacketStart(i.packet);if(!r)return null;const a=i.timestampInSamples+i.durationInSamples,s=await this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:a,vorbisLastBlocksize:i.vorbisBlockSize},t)}async getPacket(e,t){if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const i=j(e*this.internalSampleRate);if(0===i)return this.getFirstPacket(t);if(i<0)return null;l(this.bitstream.lastMetadataPacket);const r=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!r)return null;let a=r.startPage,s=this.demuxer.reader.fileSize;const n=[a];e:for(;a.headerStartPos+a.totalSizei?s=u.headerStartPos:(a=u,n.push(u));continue e}r=u.headerStartPos+u.totalSize}}let o=r.startPage;for(const l of n){if(l.granulePosition===a.granulePosition)break;(!o||l.headerStartPos>o.headerStartPos)&&(o=l)}let c=o;const u=[c];for(;c.serialNumber!==this.bitstream.serialNumber||c.granulePosition!==a.granulePosition;){const e=c.headerStartPos+c.totalSize;let t=this.demuxer.reader.requestSliceRange(e,ia,ra);de(t)&&(t=await t),l(t);const i=aa(t);l(i),c=i,c.serialNumber===this.bitstream.serialNumber&&u.push(c)}l(-1!==c.granulePosition);let d,h,f=null,m=c,p=0;if(c.headerStartPos===r.startPage.headerStartPos)d=this.granulePositionToTimestampInSamples(0),h=!0,f=0;else{d=0,h=!1;for(let t=c.lacingValues.length-1;t>=0;t--){if(c.lacingValues[t]<255){f=t+1;break}}if(null===f)throw new Error("Invalid page with granule position: no packets end on this page.");p=f-1;const e={data:Ti,endPage:m,endSegmentIndex:p};if(await this.demuxer.findNextPacketStart(e)){const e=la(u,c,f);l(e);const t=ca(u,e.page,e.segmentIndex);t&&(c=t.page,f=t.segmentIndex)}else for(;;){const e=la(u,c,f);if(!e)break;const t=ca(u,e.page,e.segmentIndex);if(!t)break;if(c=t.page,f=t.segmentIndex,e.page.headerStartPos!==m.headerStartPos){m=e.page,p=e.segmentIndex;break}}}let g=null,k=null;for(;null!==c;){l(null!==f);const e=await this.demuxer.readPacket(c,f);if(!e)break;if(!(c.headerStartPos===r.startPage.headerStartPos&&fi||Math.max(a.timestampInSamples,0)===i))break}const a=await this.demuxer.findNextPacketStart(e);if(!a)break;c=a.startPage,f=a.startSegmentIndex}return g}async getPacketSequential(e,t){const i=await this.sequentialScanMutex.acquire();try{const i=j(e*this.internalSampleRate);e=i/this.internalSampleRate;const r=A(this.sequentialScanCache,i,e=>e.timestampInSamples);let a;if(-1!==r){const e=this.sequentialScanCache[r];a=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else a=await this.getFirstPacket(t);let s=0;for(;a&&a.timestampe)break;if(a=i,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(a);l(e),this.sequentialScanCache.length>0&&l(d(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return a}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const ca=(e,t,i)=>{let r=t,a=i;e:for(;;){for(a--;a>=0;a--){if(r.lacingValues[a]<255){a++;break e}}l(-1===a);if(!(1&r.headerType)){a=0;break}const t=O(e,e=>e.headerStartPos{if(i>0)return{page:t,segmentIndex:i-1};const r=O(e,e=>e.headerStartPos{let e=this.reader.requestSlice(0,12);de(e)&&(e=await e),l(e);const t=Oo(e,4),i="RIFX"!==t,r="RF64"===t,a=Co(e,i);let s=r?this.reader.fileSize:Math.min(a+8,this.reader.fileSize??1/0);if("WAVE"!==Oo(e,4))throw new Error("Invalid WAVE file - wrong format");let n=0,o=null,c=e.filePos;for(;null===s||c=18&&357!==a){const e=vo(r,i),s=t-18;if(Math.min(s,e)>=22&&a===ua.EXTENSIBLE){r.skip(6);const e=To(r,16);a=e[0]|e[1]<<8}}if(a!==ua.MULAW&&a!==ua.ALAW||(c=8),a!==ua.PCM&&a!==ua.IEEE_FLOAT&&a!==ua.ALAW&&a!==ua.MULAW)throw new Error(`Unsupported WAVE codec (format tag ${a}). Only integer/float PCM, A-law, and \u03bc-law are supported.`);if(a===ua.PCM&&![8,16,24,32].includes(c))throw new Error(`Unsupported WAVE PCM bit depth (${c}). Only 8, 16, 24, and 32 bits are supported.`);if(a===ua.IEEE_FLOAT&&![32,64].includes(c))throw new Error(`Unsupported WAVE float bit depth (${c}). Only 32 and 64 bits are supported.`);this.audioInfo={format:a,numberOfChannels:s,sampleRate:n,sampleSizeInBytes:Math.ceil(c/8),blockSizeInBytes:o}}async parseListChunk(e,t,i){var r,a,s,n,o,c,l,u,d,h,f;let m=this.reader.requestSlice(e,t);if(de(m)&&(m=await m),!m)return;const p=Oo(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=Oo(m,4),t=Co(m,i),p=To(m,t);let k=0;for(let i=0;i0&&((c=this.metadataTags).trackNumber??(c.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((l=this.metadataTags).tracksTotal??(l.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||((u=this.metadataTags).date??(u.date=e))}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&((d=this.metadataTags).date??(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":(h=this.metadataTags).genre??(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":(f=this.metadataTags).comment??(f.comment=y)}g+=8+t+(1&t)}}async parseId3Chunk(e,t){let i=this.reader.requestSlice(e,t);if(de(i)&&(i=await i),!i)return;const r=$o(i);if(r){const a=t-Vo;if(r.size=Math.min(r.size,a),r.size>0){const t=i.slice(e+Vo,r.size);Go(t,r,this.metadataTags)}}}getCodec(){if(l(this.audioInfo),this.audioInfo.format===ua.MULAW)return"ulaw";if(this.audioInfo.format===ua.ALAW)return"alaw";if(this.audioInfo.format===ua.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}if(this.audioInfo.format===ua.IEEE_FLOAT){if(4===this.audioInfo.sampleSizeInBytes)return"pcm-f32";if(8===this.audioInfo.sampleSizeInBytes)return"pcm-f64"}l(!1)}async getMimeType(){return"audio/wav"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}const fa=2048;class ma{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.format}async getDecoderConfig(){const e=this.demuxer.getCodec();return e?(l(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null}getNumberOfChannels(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return l(-1!==this.demuxer.dataSize),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return V}getDisposition(){return{...Ee}}async getPacketAtIndex(e,t){l(e>=0),l(this.demuxer.audioInfo);const i=e*fa*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const r=Math.min(fa*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);if(de(e)&&(e=await e),!e)return null}let a;if(t.metadataOnly)a=Ti;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);de(e)&&(e=await e),l(e),a=To(e,r)}const s=e*fa/this.demuxer.audioInfo.sampleRate,n=r/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,this.demuxer.lastKnownPacketIndex),new Si(a,"key",s,n,e,r)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getPacket(e,t){l(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/fa,(this.demuxer.dataSize-1)/(fa*this.demuxer.audioInfo.blockSizeInBytes)));if(i<0)return null;const r=await this.getPacketAtIndex(i,t);if(r)return r;if(0===i)return null;l(null===this.demuxer.reader.fileSize);let a=await this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;a;){const e=await this.getNextPacket(a,t);if(!e)break;a=e}return a}getNextPacket(e,t){l(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/fa);return this.getPacketAtIndex(i+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const pa=e=>{const t=e.filePos,i=To(e,9),r=new _e(i);if(4095!==r.readBits(12))return null;r.skipBits(1);if(0!==r.readBits(2))return null;const a=r.readBits(1),s=r.readBits(2)+1,n=r.readBits(4);if(15===n)return null;r.skipBits(1);const o=r.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);const c=r.readBits(13);r.skipBits(11);const l=r.readBits(2)+1;if(1!==l)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===a?e.filePos-=2:u=r.readBits(16),{objectType:s,samplingFrequencyIndex:n,channelConfiguration:o,frameLength:c,numberOfAacFrames:l,crcCheck:u,startPos:t}},ga=1024;class ka extends wi{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.trackBackings=[],this.readingMutex=new B,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();l(this.firstFrameHeader),this.trackBackings=[new ya(this)]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,Vo);if(de(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=$o(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(de(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=pa(e);if(!t)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&t.startPos+t.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=t);const i=Re[t.samplingFrequencyIndex];l(void 0!==i);const r=ga/i,a={timestamp:this.nextTimestampInSamples/i,duration:r,dataStart:t.startPos,dataSize:t.frameLength};this.loadedSamples.push(a),this.nextTimestampInSamples+=ga,this.lastLoadedPos=t.startPos+t.frameLength}async getMimeType(){return"audio/aac"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0;for(;;){let t=this.reader.requestSlice(e,Vo);if(de(t)&&(t=await t),!t)break;const i=$o(t);if(!i)break;let r=this.reader.requestSlice(t.filePos,i.size);if(de(r)&&(r=await r),!r)break;Go(r,i,this.metadataTags),e=t.filePos+i.size}return this.metadataTags}finally{e()}}}class ya{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/ga}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return V}getCodec(){return"aac"}getInternalCodecId(){return l(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){l(this.demuxer.firstFrameHeader);const e=Fe[this.demuxer.firstFrameHeader.channelConfiguration];return l(void 0!==e),e}getSampleRate(){l(this.demuxer.firstFrameHeader);const e=Re[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return l(void 0!==e),e}getDisposition(){return{...Ee}}async getDecoderConfig(){return l(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}}async getPacketAtIndex(e,t){if(-1===e)return null;const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=Ti;else{let e=this.demuxer.reader.requestSlice(i.dataStart,i.dataSize);if(de(e)&&(e=await e),!e)return null;r=To(e,i.dataSize)}return new Si(r,"key",i.timestamp,i.duration,e,i.dataSize)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getNextPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{const i=F(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}}async getPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=A(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1{var e;let t=0;for(;;){let e=this.reader.requestSlice(t,Vo);if(de(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const i=$o(e);if(!i)break;let r=this.reader.requestSlice(e.filePos,i.size);de(r)&&(r=await r),l(r),Go(r,i,this.metadataTags),t=e.filePos+i.size}for(t+=4;null===this.reader.fileSize||ts.end-6)return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:s.end-e,isLastFrame:!0};if(255===So(s)){const t=s.filePos;if(So(s)!==(1===this.blockingBit?249:248)){s.filePos=t;continue}s.skip(-2);const i=s.filePos-e,r=this.readFlacFrameHeader({slice:s,isFirstPacket:!1});if(!r){s.filePos=t;continue}if(0===this.blockingBit){if(r.num-n.num!==1){s.filePos=t;continue}}else if(r.num-n.num!==n.blockSize){s.filePos=t;continue}return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:i,isLastFrame:!1}}}}readFlacFrameHeader({slice:e,isFirstPacket:t}){const i=e.filePos,r=To(e,4),a=new _e(r);if(32764!==a.readBits(15))return null;if(null===this.blockingBit){l(t);const e=a.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){l(!t);if(1!==a.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");l(!t);if(0!==a.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*2**e:6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?2**e:null)(a.readBits(4));if(!s)return null;l(this.audioInfo);const n=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(a.readBits(4),this.audioInfo.sampleRate);if(!n)return null;a.readBits(4),a.readBits(3);if(0!==a.readBits(1))return null;const o=(e=>{let t=0;const i=new _e(To(e,1));for(;1===i.readBits(1);)t++;if(0===t)return i.readBits(7);const r=[],a=t-1,s=new _e(To(e,a)),n=8-t-1;for(let o=0;oe|t<"uncommon-u16"===t?Po(e)+1:"uncommon-u8"===t?So(e)+1:"number"===typeof t?t:(z(t),void l(!1)))(e,s),u=((e,t)=>"uncommon-u16"===t?Po(e):"uncommon-u16-10"===t?10*Po(e):"uncommon-u8"===t?So(e):"number"===typeof t?t:null)(e,n);if(null===u)return null;if(u!==this.audioInfo.sampleRate)return null;const d=e.filePos-i,h=So(e);e.skip(-d),e.skip(-1);const f=(e=>{let t=0;for(const i of e){t^=i;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(To(e,d));return h!==f?null:{num:o,blockSize:c,sampleRate:u}}async advanceReader(){await this.readMetadata(),l(null!==this.lastLoadedPos),l(this.audioInfo);const e=this.lastLoadedPos,t=await this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],r={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(r),t.isLastFrame&&(this.lastSampleLoaded=!0)}}class wa{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return V}getTimeResolution(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return l(this.demuxer.audioInfo),0===this.demuxer.audioInfo.totalSamples?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getDisposition(){return{...Ee}}async getDecoderConfig(){return l(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}}async getPacket(e,t){if(l(this.demuxer.audioInfo),e<0)return null;const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=A(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===i){await this.demuxer.advanceReader();continue}const r=this.demuxer.loadedSamples[i],a=r.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(a+r.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(i,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);await this.demuxer.advanceReader()}}finally{i()}}async getNextPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{const i=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}async getPacketAtIndex(e,t){const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=Ti;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(de(e)&&(e=await e),!e)return null;r=To(e,i.byteSize)}l(this.demuxer.audioInfo);const a=i.blockOffset/this.demuxer.audioInfo.sampleRate,s=i.blockSize/this.demuxer.audioInfo.sampleRate;return new Si(r,"key",a,s,e,i.byteSize)}async getFirstPacket(e){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)}}const Ta=9e4,Sa=2**33,va=188,Pa="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",Ia=new Set([133,134,162]),xa=new Set;class Ca extends wi{constructor(e){super(e),this.metadataPromise=null,this.elementaryStreams=[],this.trackBackingEntries=[],this.packetOffset=0,this.packetStride=-1,this.sectionEndPositions=[],this.seekChunkSize=5242880,this.minReferencePointByteDistance=-1,this.timestampWrapInfo=null,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=this.reader.requestSlice(0,205);de(e)&&(e=await e),l(e);const t=To(e,205);if(71===t[0]&&71===t[188])this.packetOffset=0,this.packetStride=va;else if(71===t[0]&&71===t[204])this.packetOffset=0,this.packetStride=204;else{if(71!==t[4]||71!==t[196])throw new Error("Unreachable.");this.packetOffset=4,this.packetStride=192}this.minReferencePointByteDistance=256*this.packetStride;let i=this.packetOffset,r=null,a=!1,s=!1;for(;;){const e=await this.readPacketHeader(i);if(!e)break;if(0===e.payloadUnitStartIndicator){i+=this.packetStride;continue}if(s&&!this.elementaryStreams.some(t=>t.pid===e.pid)){i+=this.packetStride;continue}const t=await this.readSection(i,!0,!s);if(!t)break;const n=3,o=32;let c=!1;if(!s&&0!==t.pid){if(!(0===t.payload[0]&&0===t.payload[1]&&1===t.payload[2])){const e=new _e(t.payload),i=e.readAlignedByte();e.skipBits(8*i);c=2===e.readBits(8)}}if(0!==t.pid||a)if(t.pid!==r&&!c||s){const e=this.elementaryStreams.find(e=>e.pid===t.pid);e:if(e&&!e.initialized){const i=Ea(this,t,!0);if(!i)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${e.pid}`);if(e.firstSection=t,e.canBeTrustedWithKeyPackets=1===t.randomAccessIndicator,this.input._initInput){const i=(await this.input._initInput._getDemuxer()).elementaryStreams.find(i=>i.pid===t.pid&&i.info.codec===e.info.codec);if(i){e.info=i.info,e.initialized=!0;break e}}const r=new Da(e,i);if("video"===e.info.type){for(;;){if(r.suppliedPacket=null,await r.markNextPacket(),"avc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(e.info.avcCodecInfo=Qe(r.suppliedPacket.data),!e.info.avcCodecInfo)continue;const t=e.info.avcCodecInfo.sequenceParameterSets[0];l(t);const i=et(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight;const a=i.pixelAspectRatio.num,s=i.pixelAspectRatio.den;a>0&&s>0&&(a>s?(e.info.squarePixelWidth=Math.round(e.info.width*a/s),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*s/a))),e.info.colorSpace={primaries:w[i.colourPrimaries],transfer:S[i.transferCharacteristics],matrix:P[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}if("hevc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(e.info.hevcCodecInfo=nt(r.suppliedPacket.data),!e.info.hevcCodecInfo)continue;const t=e.info.hevcCodecInfo.arrays.find(e=>e.nalUnitType===Ue.SPS_NUT).nalUnits[0];l(t);const i=st(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight,i.pixelAspectRatio.num>i.pixelAspectRatio.den?(e.info.squarePixelWidth=Math.round(e.info.width*i.pixelAspectRatio.num/i.pixelAspectRatio.den),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*i.pixelAspectRatio.den/i.pixelAspectRatio.num)),e.info.colorSpace={primaries:w[i.colourPrimaries],transfer:S[i.transferCharacteristics],matrix:P[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}throw new Error("Unhandled.")}e.info.decoderConfig={codec:ri({width:e.info.width,height:e.info.height,codec:e.info.codec,codecDescription:null,colorSpace:e.info.colorSpace,avcType:1,avcCodecInfo:e.info.avcCodecInfo,hevcCodecInfo:e.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null,proresFormat:null}),codedWidth:e.info.width,codedHeight:e.info.height,colorSpace:e.info.colorSpace},e.info.width===e.info.squarePixelWidth&&e.info.height===e.info.squarePixelHeight||(e.info.decoderConfig.displayAspectWidth=e.info.squarePixelWidth,e.info.decoderConfig.displayAspectHeight=e.info.squarePixelHeight),e.initialized=!0}else{if(await r.markNextPacket(),!r.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${e.pid}`);if("aac"===e.info.codec){const t=bo.tempFromBytes(r.suppliedPacket.data),i=pa(t);if(!i)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");e.info.aacCodecInfo={isMpeg2:!1,objectType:i.objectType},e.info.numberOfChannels=Fe[i.channelConfiguration],e.info.sampleRate=Re[i.samplingFrequencyIndex]}else if("mp3"===e.info.codec){const t=Bo(bo.tempFromBytes(r.suppliedPacket.data)),i=pi(t,r.suppliedPacket.data.byteLength);if(!i.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");e.info.numberOfChannels=bi(i.header.channel),e.info.sampleRate=i.header.sampleRate}else if("ac3"===e.info.codec){const t=Et(r.suppliedPacket.data);if(!t)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(3===t.fscod)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=Bt[t.acmod]+t.lfeon,e.info.sampleRate=Ne[t.fscod]}else if("eac3"===e.info.codec){const t=Ft(r.suppliedPacket.data);if(!t)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");const i=At(t);if(null===i)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=Dt(t),e.info.sampleRate=i}else{if("dts"!==e.info.codec)throw new Error("Unhandled.");{const t=Ht(r.suppliedPacket.data);if(!t)throw new Error("Invalid DTS audio stream; could not read frame header from first packet.");e.info.numberOfChannels=t.numberOfChannels,e.info.sampleRate=t.sampleRate,t.core&&(e.info.dtsFormat=t.hasExtensions?"dtsh":"dtsc")}}e.info.decoderConfig={codec:si({codec:e.info.codec,codecDescription:null,aacCodecInfo:e.info.aacCodecInfo,dtsFormat:e.info.dtsFormat}),numberOfChannels:e.info.numberOfChannels,sampleRate:e.info.sampleRate},e.initialized=!0}}}else{const e=new _e(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(12);const r=e.readBits(12);e.skipBits(43),e.readBits(13),e.skipBits(6);const a=e.readBits(10),c=e.pos+8*a;let l=!1;for(;e.pos=4){const t=e.readBits(32);l||(l=1212435798===t||1212436562===t)}e.pos=r}for(e.pos=c;8*(r+n)-e.pos>o;){const t=e.readBits(8);e.skipBits(3);const i=e.readBits(13);e.skipBits(6);const r=e.readBits(10),a=e.pos+8*r;let s=!1,n=!1,o=!1;for(;e.pos=4){const t=e.readBits(32);o||(o=1146376960===(4294967040&t))}e.pos=r}let c=null;const u=l&&Ia.has(t)?130:t;switch(u){case 27:case 36:c={type:"video",codec:27===t?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:case 130:case 138:{let e;e=3===u||4===u?"mp3":15===u?"aac":129===u?"ac3":135===u?"eac3":"dts",c={type:"audio",codec:e,decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:n?c={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:s?c={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:o&&(c={type:"audio",codec:"dts",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1});break;default:xa.has(t)||(xe._warn(`Note: MPEG-TS streams with stream_type 0x${t.toString(16)} are not currently supported.`),xa.add(t))}c&&this.elementaryStreams.push({demuxer:this,pid:i,streamType:t,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:c,referencePesPackets:[]})}s=!0}else{const e=new _e(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(14);const s=e.readBits(10);for(e.skipBits(40);8*(s+n)-e.pos>o;){const t=e.readBits(16);e.skipBits(3);const i=e.readBits(13);if(0!==t){if(null!==r)throw new Error("Only files with a single program are supported.");r=i}}if(null===r)throw new Error("Program Association Table must link to a Program Map Table.");a=!0}if(s&&this.elementaryStreams.every(e=>e.initialized))break;i+=this.packetStride}if(!s){if(!a)throw new Error("No Program Association Table found in the file.");throw new Error("No Program Map Table found in the file.")}for(const n of this.elementaryStreams)n.initialized&&("video"===n.info.type?this.trackBackingEntries.push(new Ra(n)):this.trackBackingEntries.push(new Fa(n)))})())}async getTrackBackings(){return await this.readMetadata(),this.trackBackingEntries}async getMetadataTags(){return{}}async getMimeType(){await this.readMetadata();return(e=>{let t="video/MP2T";const i=[...new Set(e.filter(Boolean))];return i.length>0&&(t+=`; codecs="${i.join(", ")}"`),t})(await Promise.all(this.trackBackingEntries.map(e=>e.getDecoderConfig().then(e=>e?.codec??null))))}async readSection(e,t,i=!1){let r=e,a=e;const s=[];let n,o=0,c=null,l=!0,u=0;for(;;){const e=await this.readPacket(a);if(a+=this.packetStride,!e)break;if(c){if(e.pid!==c.pid){if(i)break;continue}if(1===e.payloadUnitStartIndicator)break}else{if(0===e.payloadUnitStartIndicator)break;c=e}const n=!!(2&e.adaptationFieldControl),d=!!(1&e.adaptationFieldControl);let h=0;if(n&&(h=1+e.body[0],e===c&&h>1&&(u=e.body[1]>>6&1)),d&&(0===h?(s.push(e.body),o+=e.body.byteLength):(s.push(e.body.subarray(h)),o+=e.body.byteLength-h)),r=a,!t&&o>=64){l=!1;break}if(-1!==F(this.sectionEndPositions,r,e=>e)){l=!1;break}}if(l){const e=A(this.sectionEndPositions,r,e=>e);this.sectionEndPositions.splice(e+1,0,r)}if(!c)return null;if(1===s.length)n=s[0];else{const e=s.reduce((e,t)=>e+t.length,0);n=new Uint8Array(e);let t=0;for(const i of s)n.set(i,t),t+=i.length}return{startPos:e,endPos:t?r:null,pid:c.pid,payload:n,randomAccessIndicator:u}}async readPacketHeader(e){let t=this.reader.requestSlice(e,4);if(de(t)&&(t=await t),!t)return null;if(71!==So(t))throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const i=Po(t);return{payloadUnitStartIndicator:i>>14&1,pid:8191&i,adaptationFieldControl:So(t)>>4&3}}async readPacket(e){let t=this.reader.requestSlice(e,va);if(de(t)&&(t=await t),!t)return null;const i=To(t,va);if(71!==i[0])throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const r=(i[1]<<8)+i[2];return{payloadUnitStartIndicator:r>>14&1,pid:8191&r,adaptationFieldControl:i[3]>>4&3,body:i.subarray(4)}}normalizeTimestamp(e){if(!this.timestampWrapInfo){const t=54e5;this.timestampWrapInfo={reference:e-t,offset:e>=Sa-t?-8589934592:Sa}}const{reference:t,offset:i}=this.timestampWrapInfo;return i<0&&e>=t||i>0&&e{if(t.payload.byteLength<3)return null;const r=new _e(t.payload);if(1!==r.readBits(24))return null;const a=r.readBits(8);if(r.skipBits(16),188===a||190===a||191===a||240===a||241===a||255===a||242===a||248===a)return null;r.skipBits(8);const s=r.readBits(2);r.skipBits(14);let n=null;if(2===s||3===s)n=0,r.skipBits(4),n+=r.readBits(3)*(1<<30),r.skipBits(1),n+=32768*r.readBits(15),r.skipBits(1),n+=r.readBits(15),n=e.normalizeTimestamp(n);else if(i)throw new Error(Pa);return{sectionStartPos:t.startPos,sectionEndPos:t.endPos,pts:n,randomAccessIndicator:t.randomAccessIndicator}},Ea=(e,t,i)=>{l(null!==t.endPos);const r=Ba(e,t,i);if(!r)return null;const a=new _e(t.payload);a.skipBits(32);const s=a.readBits(16);a.skipBits(16);const n=a.readBits(8),o=a.pos+8*n;a.pos=o;const c=o/8;l(Number.isInteger(c));const u=t.payload.subarray(c,s>0?6+s:t.payload.byteLength);return{...r,data:u}};class _a{constructor(e){this.elementaryStream=e,this.packetBuffers=new WeakMap,this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){const e=this.elementaryStream.demuxer,t=this.elementaryStream.info.type;let i=0;for(const r of e.trackBackingEntries)if(r.getType()===t&&i++,l(r instanceof _a),r.elementaryStream===this.elementaryStream)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return V}getDisposition(){return{...Ee,primary:!1}}getTimeResolution(){return Ta}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}createEncodedPacket(e,t,i){let r;return r=this.allPacketsAreKeyPackets()||1===e.randomAccessIndicator?"key":"delta",new Si(i.metadataOnly?Ti:e.data,r,e.pts/Ta,Math.max(t/Ta,0),e.sequenceNumber,e.data.byteLength)}async getFirstPacket(e){const t=this.elementaryStream.firstSection;l(t);const i=Ea(this.elementaryStream.demuxer,t,!0);l(i);const r=new Da(this.elementaryStream,i),a=new Ma(this,r),s=await a.readNext();if(!s)return null;const n=this.createEncodedPacket(s.packet,s.duration,e);return this.packetBuffers.set(n,a),this.packetSectionStarts.set(n,s.packet.sectionStartPos),n}async getNextPacket(e,t){let i=this.packetBuffers.get(e);if(i){const r=await i.readNext();if(!r)return null;this.packetBuffers.delete(e);const a=this.createEncodedPacket(r.packet,r.duration,t);return this.packetBuffers.set(a,i),this.packetSectionStarts.set(a,r.packet.sectionStartPos),a}const r=this.packetSectionStarts.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");const a=this.elementaryStream.demuxer,s=await a.readSection(r,!0);l(s);const n=Ea(a,s,!0);l(n);const o=new Da(this.elementaryStream,n);i=new Ma(this,o);const c=e.sequenceNumber;for(;;){const e=await i.readNext();if(!e)return null;if(e.packet.sequenceNumber>c){const r=this.createEncodedPacket(e.packet,e.duration,t);return this.packetBuffers.set(r,i),this.packetSectionStarts.set(r,e.packet.sectionStartPos),r}}}async getNextKeyPacket(e,t){let i=e;for(;;){if(i=await this.getNextPacket(i,t),!i)return null;if("key"===i.type)return i}}getPacket(e,t){return this.doPacketLookup(e,!1,t)}getKeyPacket(e,t){return this.doPacketLookup(e,!0,t)}async doPacketLookup(e,t,i){const r=j(e*Ta),a=this.elementaryStream.demuxer,{reader:s,seekChunkSize:n}=a,o=this.elementaryStream.pid,c=async(e,t,i)=>{let r=e;for(;re.pts),g=-1!==p?m[p]:null;if(g&&r-g.pts<45e3)f=g.sectionStartPos;else{let e=0;if(null!==s.fileSize){const t=Math.ceil(s.fileSize/n);if(t>1){let i=0,s=t-1;for(e=i;i<=s;){const t=Math.floor((i+s)/2),o=$(t*n,a.packetStride)+h.sectionStartPos,l=o+n,u=await c(o,l,!1);u?u.pesPacketHeader.pts<=r?(e=t,i=t+1):s=t-1:s=t-1}}}f=$(e*n,a.packetStride)+h.sectionStartPos}const k=await c(f,s.fileSize??1/0,!1);let y=k?.pesPacketHeader??null;y||(y=h);const b=this.getReorderSize(),w=async(e,t)=>{const s=await a.readSection(e,!0);l(s);const n=Ea(a,s,!0);l(n);const o=new Da(this.elementaryStream,n),c=new Ma(this,o);for(;;){if((d(c.presentationOrderPackets)?.pts??-1/0)>=r)break;if(!(await c.readNextPacket()))break}const u=L(c.presentationOrderPackets,t);if(-1===u)return null;const h=c.presentationOrderPackets[u],f=0===u?0:h.pts-c.presentationOrderPackets[u-1].pts;for(;c.decodeOrderPackets[0]!==h;)c.decodeOrderPackets.shift();c.lastDuration=f;const m=await c.readNext();l(m);const p=this.createEncodedPacket(m.packet,m.duration,i);return this.packetBuffers.set(p,c),this.packetSectionStarts.set(p,m.packet.sectionStartPos),p};if(!t||this.allPacketsAreKeyPackets()){e:for(;;){let e=y.sectionStartPos+a.packetStride;for(;;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,!1);if(t){const e=Ba(a,t,!1);if(e&&null!==e.pts){if(e.pts>r)break e;y=e,Aa(this.elementaryStream,y);break}}}e+=a.packetStride}}e:for(let e=0;e=a.packetOffset;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,!1);if(t){const e=Ba(a,t,!1);if(e&&null!==e.pts){y=e;break}}}e-=a.packetStride}}return w(y.sectionStartPos,e=>e.pts<=r)}{let e=f,t=null;const i=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let d=null;const f=e<=h.sectionStartPos;let m,p=null;if(f)m=h,p=u;else{const t=await c(e,s.fileSize??1/0,i);m=t?.pesPacketHeader??null,p=t?.section??null}let g=!1,k=0;e:for(;m&&!(null!==t&&m.sectionStartPos>=t);){if(m.pts<=r){let e;if(this.elementaryStream.canBeTrustedWithKeyPackets)e=1===m.randomAccessIndicator;else{l(p);const t=Ea(a,p,!0);l(t);const i=new Da(this.elementaryStream,t);await i.markNextPacket(),e=1===i.suppliedPacket?.randomAccessIndicator}e&&(d=m)}if(m.pts>r&&(g=!0),g&&(k++,k>b))break;let e=m.sectionStartPos+a.packetStride;for(;;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,i);if(t){const e=Ba(a,t,!1);if(e&&null!==e.pts){m=e,p=t,Aa(this.elementaryStream,m);break}}}e+=a.packetStride}}if(d){let e=d;if(0===k)e:for(let r=0;r=a.packetOffset;){const r=await a.readPacketHeader(t);if(!r)break e;if(r.pid===o&&1===r.payloadUnitStartIndicator){const r=await a.readSection(t,i);if(r){const t=Ba(a,r,!1);if(t&&null!==t.pts){e=t;break}}}t-=a.packetStride}}const t=await w(e.sectionStartPos,e=>e.pts<=r&&1===e.randomAccessIndicator);return l(t),t}if(f)return null;t=e,e=Math.max($(e-h.sectionStartPos-n,a.packetStride)+h.sectionStartPos,h.sectionStartPos)}}}}class Ra extends _a{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}async getColorSpace(){return this.elementaryStream.info.colorSpace}async canBeTransparent(){return!1}async getDecoderConfig(){return l(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}}class Fa extends _a{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}async getDecoderConfig(){return l(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}}const Aa=(e,t)=>{const i=e.referencePesPackets,r=A(i,t.sectionStartPos,e=>e.sectionStartPos);if(r>=0){const a=i[r];if(t.pts<=a.pts)return!1;const s=e.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-a.sectionStartPos=e?e:this.bufferData(e-t).then(()=>Math.min(this.endPos-this.currentPos,e))}getCurrentPesPacket(){const e=this.pesPackets[this.currentPesPacketIndex];return l(e),e}async bufferData(e){const t=this.endPos+e;for(;this.endPos=l)break;u=e;const i=o+u;if(u+3>=l){this.seekTo(i);break}const d=c[u+1],f=c[u+2],m=c[u+3];let p=0;if(0===d&&0===f&&1===m?p=4:0===d&&1===f&&(p=3),0===p){u++;continue}const g=i;a??(a=g);const k=u+p,y=k+r,b=6;if(y+("avc"===t?b:1)>l){this.seekTo(i);break}const w=c[k];let T,S,v;if("avc"===t)T=je(w),S=T===Le.NON_IDR_SLICE||T===Le.SLICE_DPA||T===Le.IDR,v=T===Le.SEI||T===Le.SPS||T===Le.PPS||T===Le.AUD;else{T=at(w);if(((1&w)<<5|c[k+1]>>3)>0){u+=p;continue}S=T<=Ue.RASL_R||T>=Ue.BLA_W_LP&&T<=21,v=T>=Ue.VPS_NUT&&T<=37||T===Ue.PREFIX_SEI_NUT||T>=41&&T<=44||T>=48&&T<=55}let P=!1;if(S){let e;if("avc"===t){const t=c.subarray(y,y+b),i=h(new _e(t));e=!s||i<=n,n=i}else e=c[y]>>7===1;e&&(s?P=!0:s=!0)}else v&&s&&(P=!0);if(P){const e=g-a;return this.seekTo(a),this.supplyPacket(e,0)}u+=p}if(ea){const e=this.endPos-a;return this.seekTo(a),this.supplyPacket(e,0)}}else{const t=e.info.codec,i=128;for(;;){let r=this.ensureBuffered(i);de(r)&&(r=await r);const a=this.currentPos;for(;this.currentPos-a>6,n=63&a[4];if(3===s||n>37){this.seekTo(t+1);continue}const o=_t[3*n+s];l(void 0!==o),this.seekTo(t),r=this.ensureBuffered(o),de(r)&&(r=await r);const c=Math.round(13824e4/e.info.sampleRate);return this.supplyPacket(r,c)}if("eac3"===t){if(11!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(5);if(de(r)&&(r=await r),r<5)return;const a=this.readBytes(5);if(11!==a[0]||119!==a[1]){this.seekTo(t+1);continue}const s=2*(((7&a[2])<<8|a[3])+1),n=3===a[4]>>6?3:a[4]>>4&3,o=Rt[n];this.seekTo(t),r=this.ensureBuffered(s),de(r)&&(r=await r);const c=256*o,l=Math.round(c*Ta/e.info.sampleRate);return this.supplyPacket(r,l)}if("dts"===t){if(127!==i&&100!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(18);if(de(r)&&(r=await r),r<18)return;const a=this.readBytes(18),s=jt(a);let n=s?null:Kt(a);if(!s&&!n){this.seekTo(t+1);continue}if(n&&!n.asset){this.seekTo(t);const e=Math.min(n.frameSize,4096);let i=this.ensureBuffered(e);de(i)&&(i=await i),n=Kt(this.readBytes(i))??n}let o=s?s.frameSize:n.frameSize;if(s){let e=4*Math.ceil(s.frameSize/4);for(;;){this.seekTo(t);const i=e+10;let r=this.ensureBuffered(i);if(de(r)&&(r=await r),r=0)}async readNext(){if(0===this.decodeOrderPackets.length){if(!(await this.readNextPacket()))return null}await this.ensureCurrentPacketHasNext();const e=this.decodeOrderPackets[0],t=this.presentationOrderPackets.indexOf(e);let i;if(l(-1!==t),t===this.presentationOrderPackets.length-1)i=this.lastDuration;else{i=this.presentationOrderPackets[t+1].pts-e.pts,this.lastDuration=i}for(this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){const e=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(e))break;this.presentationOrderPackets.shift()}return{packet:e,duration:i}}async readNextPacket(){if(this.reachedEnd)return!1;let e;return this.context.suppliedPacket||await this.context.markNextPacket(),e=this.context.suppliedPacket,this.context.suppliedPacket=null,e?(this.decodeOrderPackets.push(e),this.processPacketThroughReorderBuffer(e),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)}async ensureCurrentPacketHasNext(){const e=this.decodeOrderPackets[0];for(l(e);;){const t=this.presentationOrderPackets.indexOf(e);if(-1!==t&&t<=this.presentationOrderPackets.length-2)break;if(!(await this.readNextPacket()))break}}processPacketThroughReorderBuffer(e){if(this.reorderBuffer.push(e),this.reorderBuffer.length>this.reorderSize){let e=0;for(let i=1;ie.pts-t.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}}const Na="application/vnd.apple.mpegurl",Oa="#EXT-X-STREAM-INF:",La="#EXT-X-I-FRAME-STREAM-INF:",za="#EXT-X-MEDIA:",Ua="#EXTINF:",qa="#EXT-X-MAP:",Wa="#EXT-X-KEY:",Ha="#EXT-X-MEDIA-SEQUENCE:",Va="#EXT-X-BYTERANGE:",ja="#EXT-X-PROGRAM-DATE-TIME:",Ka="#EXT-X-TARGETDURATION:",Xa="#EXT-X-PLAYLIST-TYPE:",$a=e=>0===e.length||e.startsWith("#")&&!e.startsWith("#EXT");class Ga{constructor(e){this._attributes={};let t="",i="",r=!1,a=!1;for(let s=0;s{const e=[];if(this.trackDeclarations){for(const t of this.trackDeclarations)if("video"===t.type){const i=ye(e,e=>"video"===e.getType())+1;e.push(new Ja(this,t,i))}else if("audio"===t.type){const i=ye(e,e=>"audio"===e.getType())+1;e.push(new Za(this,t,i))}}else{if(this.firstSegment=await this.getFirstSegment({}),!this.firstSegment)return[];const t=this.getInputForSegment(this.firstSegment),i=await t.getTracks();for(const r of i)if("video"===r.type){const t=ye(e,e=>"video"===e.getType())+1;e.push(new Ja(this,{id:e.length+1,type:"video"},t))}else if("audio"===r.type){const t=ye(e,e=>"audio"===e.getType())+1;e.push(new Za(this,{id:e.length+1,type:"audio"},t))}}return e})())}async getFirstTimestampForInput(e){const t=this.firstTimestampCache.get(e);if(void 0!==t)return t;const i=await e.getFirstTimestamp();return this.firstTimestampCache.set(e,i),i}async getMediaOffset(e,t){const i=e.firstSegment??e;let r;if(this.firstSegmentFirstTimestamps.has(i))r=this.firstSegmentFirstTimestamps.get(i);else{const e=this.getInputForSegment(i);r=await this.getFirstTimestampForInput(e),this.firstSegmentFirstTimestamps.set(i,r)}if(i===e)return i.timestamp-r;const a=await this.getFirstTimestampForInput(t),s=e.timestamp-i.timestamp,n=a-r-s;return Math.abs(n)<=Math.min(.25,s)?i.timestamp-r:e.timestamp-a}dispose(){for(const e of this.inputCache)e.input.dispose();this.inputCache.length=0}}class Ya{constructor(e,t,i){this.packetInfos=new WeakMap,this.hydrationPromise=null,this.firstInputTrack=null,this.firstSegment=null,this.segmentedInput=e,this.decl=t,this.number=i}hydrate(){return this.hydrationPromise??(this.hydrationPromise=(async()=>{var e;if((e=this.segmentedInput).firstSegment??(e.firstSegment=await this.segmentedInput.getFirstSegment({})),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let t=this.segmentedInput.firstSegment,i=null;for(;t;){const e=this.segmentedInput.getInputForSegment(t);if(i=(await e.getTracks()).find(e=>e.type===this.decl.type&&e.number===this.number)??null,i)break;t=await this.segmentedInput.getNextSegment(t,{})}if(!i)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=i,this.firstSegment=t})())}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(e){return this.firstInputTrack?e():this.hydrate().then(e)}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}getHasOnlyKeyPackets(){return this.delegate(()=>this.firstInputTrack._backing.getHasOnlyKeyPackets?.()??null)}getPairingMask(){return 1n}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}async isRelativeToUnixEpoch(){return await this.hydrate(),l(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.unixEpochTimestamp===this.segmentedInput.firstSegment.timestamp}getUnixTimeForTimestamp(e){return this.segmentedInput.getUnixTimeForTimestamp(e)}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(e){return this.segmentedInput.getDurationFromMetadata(e)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}async createAdjustedPacket(e,t,i){l(e.sequenceNumber>=0),l(this.segmentedInput.firstSegment);const r=await this.segmentedInput.getMediaOffset(t,i.input),a=t.timestamp-this.segmentedInput.firstSegment.timestamp,s=e.clone({timestamp:X(e.timestamp+r,await i.getTimeResolution()),sequenceNumber:Math.floor(1e8*a)+e.sequenceNumber});return this.packetInfos.set(s,{segment:t,track:i,sourcePacket:e}),s}async getFirstPacket(e){await this.hydrate(),l(this.firstInputTrack),l(this.firstSegment);let t=this.firstInputTrack,i=this.firstSegment;for(;;){if(t){const r=await t._backing.getFirstPacket(e);if(r)return this.createAdjustedPacket(r,i,t)}if(i=await this.segmentedInput.getNextSegment(i,{skipLiveWait:e.skipLiveWait}),!i)break;const r=this.segmentedInput.getInputForSegment(i);t=(await r.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number)??null}return null}getNextPacket(e,t){return this._getNextInternal(e,t,!1)}getNextKeyPacket(e,t){return this._getNextInternal(e,t,!0)}async _getNextInternal(e,t,i){const r=this.packetInfos.get(e);if(!r)throw new Error("Packet was not created from this track.");const a=i?await r.track._backing.getNextKeyPacket(r.sourcePacket,t):await r.track._backing.getNextPacket(r.sourcePacket,t);if(a)return this.createAdjustedPacket(a,r.segment,r.track);let s=r.segment;for(;;){const e=await this.segmentedInput.getNextSegment(s,{skipLiveWait:t.skipLiveWait});if(!e)return null;const i=this.segmentedInput.getInputForSegment(e),a=(await i.getTracks()).find(e=>e.type===r.track.type&&e.number===r.track.number);if(!a){s=e;continue}const n=await a._backing.getFirstPacket(t);return n?this.createAdjustedPacket(n,e,a):null}}getPacket(e,t){return this._getPacketInternal(e,t,!1)}getKeyPacket(e,t){return this._getPacketInternal(e,t,!0)}async _getPacketInternal(e,t,i){let r=await this.segmentedInput.getSegmentAt(e,{skipLiveWait:t.skipLiveWait});if(!r)return null;for(await this.hydrate();r;){const a=this.segmentedInput.getInputForSegment(r),s=(await a.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number);if(!s){r=await this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait});continue}const n=e-await this.segmentedInput.getMediaOffset(r,a),o=i?await s._backing.getKeyPacket(n,t):await s._backing.getPacket(n,t);if(o)return this.createAdjustedPacket(o,r,s);r=await this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait})}return null}}class Ja extends Ya{getType(){return"video"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getCodedWidth(){return this.delegate(()=>this.firstInputTrack._backing.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.firstInputTrack._backing.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelHeight())}getRotation(){return this.delegate(()=>this.firstInputTrack._backing.getRotation())}async getColorSpace(){return this.delegate(()=>this.firstInputTrack._backing.getColorSpace())}async canBeTransparent(){return this.delegate(()=>this.firstInputTrack._backing.canBeTransparent())}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}}class Za extends Ya{getType(){return"audio"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getNumberOfChannels(){return this.delegate(()=>this.firstInputTrack._backing.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.firstInputTrack._backing.getSampleRate())}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}}pe();const es=1/0;"undefined"!==typeof FinalizationRegistry&&new FinalizationRegistry(e=>{e()});class ts extends ve{constructor(){super(),this._disposed=!1,this._refCount=0,this._usedForHls=!1,this._refFinalizationRegistry=null,this._sizePromise=null,this.onread=null,"undefined"!==typeof FinalizationRegistry&&(this._refFinalizationRegistry=new FinalizationRegistry(e=>{e._decrementRefCount()}))}async getSizeOrNull(){if(this._disposed)throw new ko;return this._sizePromise??(this._sizePromise=(async()=>{let e=this._getFileSize();return void 0!==e||(await this._read(0,1,0,es),e=this._getFileSize(),l(void 0!==e)),e})())}async getSize(){if(this._disposed)throw new ko;const e=await this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e}slice(e,t){if(!Number.isInteger(e)||e<0)throw new TypeError("offset must be a non-negative integer.");if(void 0!==t&&(!Number.isInteger(t)||t<0))throw new TypeError("length, when provided, must be a non-negative integer.");return new gs(this,e,t)}_dispatchRead(e,t){this.onread?.(e,t),this._emit("read",{start:e,end:t})}ref(){return new is(this)}_incrementRefCount(){this._refCount++}_decrementRefCount(){this._refCount--,0===this._refCount&&(this._dispose(),this._disposed=!0)}}class is{constructor(e){if(this._freed=!1,e._disposed)throw new Error("Cannot ref a disposed source.");e._incrementRefCount(),e._refFinalizationRegistry?.register(this,e,this),this._source=e}get source(){if(!this._source)throw new Error("Can't get source; ref has already been freed.");return this._source}get freed(){return this._freed}free(){if(this._freed)throw new Error("Illegal operation: double free on SourceRef.");const e=this.source;l(e._refCount>0),e._decrementRefCount(),e._refFinalizationRegistry?.unregister(this),this._freed=!0,this._source=null}[Symbol.dispose](){this.freed||this.free()}}class rs extends ts{constructor(e,t){if("string"!==typeof e)throw new TypeError("rootPath must be a string.");if("function"!==typeof t)throw new TypeError("requestHandler must be a function.");super(),this.rootPath=e,this.requestHandler=t}_resolveRequest(e){const t=this.requestHandler(e),i=e=>{var t;if(!(e instanceof ts||e instanceof is))throw new TypeError("requestHandler must return or resolve to a Source or SourceRef.");const i=e instanceof ts?e.ref():e;return(t=i.source)._usedForHls||(t._usedForHls=this._usedForHls),i};return de(t)?t.then(i):i(t)}}const as=(e,t)=>e.path===t.path;class ss extends rs{constructor(){super(...arguments),this._root=null,this._rootRequest=null}_read(e,t,i,r){if(!this._root){if(!this._rootRequest){const e=this._resolveRequest({path:this.rootPath,isRoot:!0}),t=e=>{const t=e instanceof ts?e.ref():e;return this._root=t,this._rootRequest=null,t};de(e)?this._rootRequest=e.then(t):(t(e),l(this._root))}if(this._rootRequest)return this._rootRequest.then(a=>a.source._read(e,t,i,r))}return this._root.source._read(e,t,i,r)}_getFileSize(){if(this._root)return this._root.source._getFileSize()}_dispose(){this._root?this._root.free():this._rootRequest&&this._rootRequest.then(e=>e.free())}}const ns="undefined"!==typeof FinalizationRegistry?new FinalizationRegistry(e=>{e.cancel().catch(()=>{})}):null;class os extends ts{constructor(e,t={}){if(!(e instanceof Blob))throw new TypeError("blob must be a Blob.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.maxCacheSize&&(!ge(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.useStreamReader&&"boolean"!==typeof t.useStreamReader)throw new TypeError("options.useStreamReader, when provided, must be a boolean.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(),this._readers=new WeakMap,this._blob=e,this._options=t,this._orchestrator=new ps({maxCacheSize:t.maxCacheSize??8388608,maxWorkerCount:4,runWorker:this._runWorker.bind(this),onIdleWorkerRemoved:e=>{const t=this._readers.get(e);t&&(this._readers.delete(e),ns?.unregister(e),t.cancel().catch(()=>{}))},prefetchProfile:ms.fileSystem,handleUnhandledError:t.handleUnhandledError}),this._orchestrator.fileSize=e.size}_getFileSize(){return this._orchestrator.fileSize}_read(e,t,i,r){return this._orchestrator.read(e,t,i,r)}async _runWorker(e){l(e.strictTarget);let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!ae()&&!1!==this._options.useStreamReader){t=this._blob.slice(e.currentPos).stream().getReader(),ns?.register(e,t,e)}else t=null;this._readers.set(e,t)}for(;e.currentPos{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))&&"undefined"!==typeof window){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(i instanceof Request?i.url:i,window.location.href).origin)}catch{}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return xe._warn("Request will not be retried because a CORS error was suspected due to different origins. You can modify this behavior by providing your own function for the 'getRetryDelay' option."),null}return Math.min(2**(e-2),16)},ls=new Set;class us extends rs{constructor(e,t={}){if("string"!==typeof e&&!(e instanceof URL)&&!("undefined"!==typeof Request&&e instanceof Request))throw new TypeError("url must be a string, URL or Request.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.requestInit&&(!t.requestInit||"object"!==typeof t.requestInit))throw new TypeError("options.requestInit, when provided, must be an object.");if(void 0!==t.getRetryDelay&&"function"!==typeof t.getRetryDelay)throw new TypeError("options.getRetryDelay, when provided, must be a function.");if(void 0!==t.maxCacheSize&&(!ge(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.parallelism&&(!Number.isInteger(t.parallelism)||t.parallelism<1))throw new TypeError("options.parallelism, when provided, must be a positive number.");if(void 0!==t.fetchFn&&"function"!==typeof t.fetchFn)throw new TypeError("options.fetchFn, when provided, must be a function.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(e instanceof Request?e.url:e instanceof URL?e.href:e,e=>new us(e.path,this._options)),this._offset=0,this._length=null,this._fileSizeDetermined=!1,this._sequentialBacking=null,this._url=e,this._options=t,this._getRetryDelay=t.getRetryDelay??cs,this._requestInit={...t.requestInit};let i=null;if(t.requestInit?.headers){const e={...ee(t.requestInit.headers)},r=Object.keys(e).find(e=>"range"===e.toLowerCase());void 0!==r&&(i=e[r],delete e[r],this._requestInit.headers=e)}if(e instanceof Request){const t=e.headers.get("Range");if(null!==t){i??(i=t);const r=new Request(e);r.headers.delete("Range"),this._url=r}}if(null!==i){const e=hs(i);e&&(this._offset=e.offset,this._length=e.length)}this._orchestrator=new ps({maxCacheSize:t.maxCacheSize??67108864,maxWorkerCount:t.parallelism??2,runWorker:this._runWorker.bind(this),prefetchProfile:ms.network,handleUnhandledError:t.handleUnhandledError})}_getFileSize(){if(!this._fileSizeDetermined)return null!==this._length?this._length:void 0;const e=this._sequentialBacking?this._sequentialBacking._endIndex:this._orchestrator.fileSize;return null===e?null!==this._length?this._length:null:H(e-this._offset,0,this._length??1/0)}_read(e,t,i,r){if(null!==this._length&&t>this._length)return null;const a=this._offset,s=this._sequentialBacking?this._sequentialBacking._read(a+e,a+t):this._orchestrator.read(a+e,a+t,Math.max(a+i,a),a+Math.min(r,this._length??1/0)),n=e=>e?(e.offset-=this._offset,e):null;return de(s)?s.then(n):n(s)}async _runWorker(e){for(;;){const i=new AbortController,r=await te(this._options.fetchFn??fetch,this._url,Z(this._requestInit,{headers:{Range:`bytes=${e.currentPos}-`},signal:i.signal}),this._getRetryDelay,()=>this._disposed);if(!r.ok)throw new Error(`Error fetching ${String(this._url)}: ${r.status} ${r.statusText}`);r.redirected&&(this.rootPath=r.url);e:if(null===this._orchestrator.fileSize&&(206===r.status||"basic"===r.type&&!r.headers.has("Content-Encoding"))){const t=r.headers.get("Content-Range");if(t){const e=/\/(\d+)/.exec(t);if(e){this._orchestrator.supplyFileSize(Number(e[1]));break e}}const i=r.headers.get("Content-Length");if(i){const t=206===r.status?e.currentPos:0;this._orchestrator.supplyFileSize(t+Number(i))}}if(this._fileSizeDetermined=!0,!r.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");if(206!==r.status){if(this._sequentialBacking)return void r.body.cancel();if(!this._usedForHls){const e=new URL(this._url instanceof Request?this._url.url:this._url,"undefined"!==typeof window?window.location.href:void 0);"null"===e.origin||e.pathname.endsWith(".m3u8")||e.pathname.endsWith(".m3u")||ls.has(e.origin)||(xe._warn(`HTTP server (origin ${e.origin}) did not respond to a range request with 206 Partial Content, meaning the resource will now be streamed sequentially, with old data being evicted from the cache. Reads into evicted regions will throw. To enable efficient media file streaming across a network, please make sure your server supports range requests. Alternatively, set maxCacheSize to Infinity in the UrlSource options to keep the entire resource in memory.`),ls.add(e.origin))}return void this._transitionToSequentialMode(r.body)}const a=r.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted)return i.abort(),void this._orchestrator.signalWorkerStoppedRunning(e);let r;try{r=await a.read()}catch(t){if(this._disposed)throw t;const e=this._getRetryDelay(1,t,this._url);if(null!==e){xe._error("Error while reading response stream. Attempting to resume.",t),await Se(1e3*e);break}throw t}if(e.aborted)continue;const{done:s,value:n}=r;if(s){if(e.currentPos>=e.targetPos)return void this._orchestrator.onWorkerFinished(e);if(e.strictTarget)break;return void this._orchestrator.onWorkerFinished(e)}this._dispatchRead(e.currentPos,e.currentPos+n.length),this._orchestrator.supplyWorkerData(e,n)}}}_transitionToSequentialMode(e){let t=e.getReader(),i=0,r=0;const a=new ReadableStream({pull:async e=>{for(;;){let s;try{s=await t.read()}catch(a){if(this._disposed)throw a;const e=this._getRetryDelay(1,a,this._url);if(null===e)throw a;xe._error("Error while reading response stream. Attempting to resume.",a),await Se(1e3*e);const s=await te(this._options.fetchFn??fetch,this._url,Z(this._requestInit,{headers:{Range:`bytes=${i}-`}}),this._getRetryDelay,()=>this._disposed);if(!s.ok)throw new Error(`Error fetching ${String(this._url)}: ${s.status} ${s.statusText}`);if(!s.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");t=s.body.getReader(),r=206===s.status?0:i;continue}if(s.done)return void e.close();let n=s.value;if(r>0){const e=Math.min(r,n.length);r-=e,n=n.subarray(e)}if(0!==n.length)return i+=n.length,void e.enqueue(n)}},cancel:()=>t.cancel()}),s=new fs(a,{maxCacheSize:this._orchestrator.options.maxCacheSize,handleUnhandledError:this._options.handleUnhandledError});s._endIndex=this._orchestrator.fileSize,s._cacheMissErrorMessage="Attempted to read data from an already-evicted part of the cache. Because the HTTP server did not honor the range request, data can only be read sequentially, with old data being evicted from the cache. To fix this issue, either ensure your server responds to range requests with 206 Partial Content, or set maxCacheSize to Infinity in the UrlSource options. Note that the latter will store the entire file in the cache if needed, no matter how large.",s.on("read",({start:e,end:t})=>this._dispatchRead(e,t)),this._sequentialBacking=s;const n=new Set;for(const o of this._orchestrator.workers){for(const e of o.pendingSlices)n.add(e);o.aborted=!0,o.pendingSlices.length=0}for(const o of this._orchestrator.queuedReads)for(const e of o.pendingSlices)n.add(e);this._orchestrator.workers.length=0,this._orchestrator.queuedReads.length=0;for(const o of n){const e=s._read(o.start,o.start+o.bytes.length);de(e)?e.then(e=>{e?(l(e.offset===o.start),o.resolve(e.bytes)):o.resolve(null)},e=>o.reject(e)):(l(null===e),o.resolve(null))}}_dispose(){this._orchestrator.dispose(),this._sequentialBacking&&(this._sequentialBacking._disposed=!0,this._sequentialBacking._dispose())}}const ds=/^bytes=(\d+)-(\d*)$/,hs=e=>{const t=ds.exec(e.trim());if(!t)return null;const i=Number(t[1]),r=""===t[2]?null:Number(t[2]);return null!==r&&rthis._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const i=A(this._cache,e,e=>e.start),r=-1!==i?this._cache[i]:null;if(r&&r.start<=e&&t<=r.end)return{bytes:r.bytes,view:r.view,offset:r.start};let a=e;const s=new Uint8Array(t-e);if(-1!==i)for(let l=i;l=t)break;const r=Math.max(e,i.start);r>a&&this._throwDueToCacheMiss();const n=Math.min(t,i.end);ra&&this._throwDueToCacheMiss();const{promise:n,resolve:o,reject:c}=M();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:c}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0;else{if(!this._handleUnhandledError)throw e;this._handleUnhandledError(e)}})),n}_throwDueToCacheMiss(){throw new Error(this._cacheMissErrorMessage)}async _pull(){for(this._reader??(this._reader=this._stream.getReader());this._currentIndex0;){const e=this._cache[0];if(this._maxRequestedIndex-e.end<=this._maxCacheSize)break;this._cache.shift()}this._currentIndex+=t.byteLength}this._pulling=!1}_dispose(){for(const e of this._pendingSlices)e.reject(new ko);this._pendingSlices.length=0,this._cache.length=0,this._reader?.cancel()}}const ms={fileSystem:(e,t)=>{const i=65536;return{start:e=Math.floor((e-i)/i)*i,end:t=Math.ceil((t+i)/i)*i}},network:(e,t,i)=>{const r=65536;e=Math.max(0,Math.floor((e-r)/r)*r);for(const a of i){const i=8388608,r=Math.max((a.startPos+a.targetPos)/2,a.targetPos-i);if(fe(e,t,r,a.targetPos)){const e=a.targetPos-a.startPos,r=Math.ceil((e+1)/i)*i,s=2**Math.ceil(Math.log2(e+1)),n=Math.min(s,r);t=Math.max(t,a.startPos+n)}}return{start:e,end:t=Math.max(t,e+524288)}}};class ps{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1,this.queuedReads=[]}read(e,t,i,r){l(!this.disposed);const a=this.options.prefetchProfile(e,t,this.workers),s=Math.max(a.start,i),n=Math.min(a.end,this.fileSize??1/0,r);l(s<=e&&t<=n);let o=null;const c=A(this.cache,e,e=>e.start),u=-1!==c?this.cache[c]:null;u&&u.start<=e&&t<=u.end&&(u.age=this.nextAge++,o={bytes:u.bytes,view:u.view,offset:u.start});const d=A(this.cache,s,e=>e.start),h=o?null:new Uint8Array(t-e);let f=0,m=s;const p=[];if(-1!==d){for(let i=d;i=n)break;if(r.end<=s)continue;const a=Math.max(s,r.start),o=Math.min(n,r.end);if(l(a<=o),m=h.length&&(o={bytes:h,view:g(h),offset:e}),0===p.length)return l(o),o;const{promise:k,resolve:y,reject:b}=M(),w=[];for(const l of p){const i=Math.max(e,l.start),r=Math.min(t,l.end);i===l.start&&r===l.end?w.push(l):ie.hole.start),i=-1!==t?this.queuedReads[t]:null;for(i&&l.start<=i.hole.end?(i.hole.end=Math.max(i.hole.end,l.end),i.strictTarget&&(i.strictTarget=e),T&&i.pendingSlices.push(T)):(t++,i={hole:{start:l.start,end:l.end},strictTarget:e,pendingSlices:T?[T]:[],age:this.nextAge++},this.queuedReads.splice(t,0,i));t+1i.hole.end)break;i.hole.end=Math.max(i.hole.end,e.hole.end),i.pendingSlices.push(...e.pendingSlices),i.strictTarget&&(i.strictTarget=e.strictTarget),i.age=Math.min(i.age,e.age),this.queuedReads.splice(t+1,1)}}}return o?k.catch(e=>{if(!this.disposed){if(!this.options.handleUnhandledError)throw e;this.options.handleUnhandledError(e)}}):(l(h),o=k.then(t=>t&&{bytes:t,view:g(t),offset:e})),o}checkHoleAgainstWorker(e,t,i){if(fe(t.start-2**17,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end);for(let t=0;t=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i{if(e.running=!1,e.pendingSlices.length>0)e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0;else if(!e.aborted&&!this.disposed){if(!this.options.handleUnhandledError)throw t;this.options.handleUnhandledError(t)}}).finally(()=>{if(!e.running&&this.queuedReads.length>0){let e=0;for(let r=1;re.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;at.start&&(t.start=r),t.end<=t.start&&(s.holes.splice(e,1),e--)}0===s.holes.length&&(s.resolve(s.bytes),e.pendingSlices.splice(a,1),a--)}for(let a=0;ae){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t=e){for(const e of i.pendingSlices)e.resolve(null);this.queuedReads.splice(t,1),t--}else if(i.hole.end>e){i.hole.end=e,i.strictTarget=!0;for(let t=0;t=e&&(r.resolve(null),i.pendingSlices.splice(t,1),t--)}}}}signalWorkerStoppedRunning(e){e.running=!1,e.aborted||(e.pendingSlices.length=0)}onWorkerFinished(e){const t=this.workers.indexOf(e);l(-1!==t),e.running=!1,this.workers.splice(t,1),this.options.onIdleWorkerRemoved?.(e),null===this.fileSize&&this.supplyFileSize(e.currentPos);for(const i of e.pendingSlices)i.resolve(null)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=A(this.cache,e.start,e=>e.start)+1;if(t>0){const i=this.cache[t-1];if(i.end>=e.end)return;if(i.end>e.start){const r=new Uint8Array(e.end-i.start);r.set(i.bytes,0),r.set(e.bytes,e.start-i.start),this.currentCacheSize+=e.end-i.end,i.bytes=r,i.view=g(r),i.end=e.end,t--,e=i}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let i=t+1;i=t.end){this.cache.splice(i,1),this.currentCacheSize-=t.bytes.length,i--;continue}const r=new Uint8Array(t.end-e.start);r.set(e.bytes,0),r.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=r,e.view=g(r),e.end=t.end,this.cache.splice(i,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let i=1;ithis._length)return null;const a=this._baseSource._read(this._offset+e,this._offset+t,this._offset+i,this._offset+r),s=e=>e?(e.offset-=this._offset,e):null;return de(a)?a.then(s):s(a)}_dispose(){this._ref?.free()}ref(){return this._ref??(this._ref=this._baseSource.ref()),super.ref()}}var ks=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,a;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(a=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");a&&(r=function(){try{a.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t},ys=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,a=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===a)return a=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return a|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else a|=1}catch(n){i(n)}if(1===a)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});const bs=/^0[xX][0-9a-fA-F]+$/,ws=/^data:.*;base64,/i;class Ts extends Qa{constructor(e,t,i,r){super(e.input,t,i),this.segments=[],this.nextLines=null,this.currentUpdateSegmentsPromise=null,this.streamHasEnded=!1,this.lastSegmentUpdateTime=-1/0,this.refreshInterval=5,this.rootPath=t,this.demuxer=e,this.nextLines=r}runUpdateSegments(){return this.currentUpdateSegmentsPromise??(this.currentUpdateSegmentsPromise=(async()=>{try{const e=this.getRemainingWaitTimeMs();e>0&&await Se(e),this.lastSegmentUpdateTime=performance.now(),await this.updateSegments()}finally{this.currentUpdateSegmentsPromise=null}})())}getRemainingWaitTimeMs(){const e=performance.now()-this.lastSegmentUpdateTime,t=Math.max(0,1e3*this.refreshInterval-e);return t<=50?0:t}async updateSegments(){let e=this.nextLines;if(this.nextLines=null,!e){const t={stack:[],error:void 0,hasError:!1};try{const i=ks(t,await this.demuxer.input._getSourceUncached({path:this.rootPath,isRoot:!1}),!1),r=new yo(i.source),a=await r.requestEntireFile();l(a),e=Lo(a,a.length,{ignore:$a}),i.source instanceof rs&&(this.rootPath=i.source.rootPath)}catch(T){t.error=T,t.hasError=!0}finally{ys(t)}}const t=!1!==this.input._formatOptions.hls?.offsetTimestampsByDateTime;let i=!1,r=0,a=null,s=null,n=null,o=0,c=null,u=null,h=null,f=null,m=null,p=null,k=!1,y=d(this.segments)??null;const b=e=>{const t=e.indexOf("@"),i=Number(-1===t?e:e.slice(0,t));if(!Number.isInteger(i)||i<0)throw new Error(`Invalid #EXT-X-BYTERANGE length '${e}'.`);let r=null;if(-1!==t&&(r=Number(e.slice(t+1)),!Number.isInteger(r)||r<0))throw new Error(`Invalid #EXT-X-BYTERANGE offset '${e}'.`);return{length:i,offset:r}},w=e=>{o=e,y&&(l(null!==y.sequenceNumber),y.sequenceNumber0&&null!==p&&(r=o*p),k=!0);const e=T.slice(8),t=e.indexOf(","),i=-1===t?e:e.slice(0,t),a=Number(i);if(!Number.isFinite(a)||a<0)throw new Error(`Invalid #EXTINF tag duration '${i}'.`);s=a}else if(T.startsWith(qa)){const e=new Ga(T.slice(11)),t=e.get("uri");if(!t)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");const i=e.get("byterange");let o=null;if(null!==i&&(o=b(i)),o&&null===o.offset)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!y){const e={path:ke(this.rootPath,t),offset:o?.offset??0,length:o?.length??null};if("AES-128"===n?.method&&!n.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");u={timestamp:r,unixEpochTimestamp:a,firstSegment:null,sequenceNumber:null,location:e,duration:0,encryption:n,initSegment:null,lastProgramDateTimeSeconds:m}}s=null,null===f?h=null:f=null}else if(T.startsWith(Wa)){const e=new Ga(T.slice(11)),t=e.get("method");if("NONE"===t)n=null;else if("AES-128"===t){const t=e.get("uri");if(!t)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let i=null;const r=e.get("iv");if(r){if(!bs.test(r))throw new Error(`Unsupported IV format '${r}'.`);let e=r.slice(2);e=e.padStart(32,"0"),i=new Uint8Array(Ri);for(let t=0;t=8&&112===t[4]&&115===t[5]&&115===t[6]&&104===t[7]){const e=g(t).getUint32(0);r=vi(t.subarray(8,Math.min(e,t.length)))}}n={method:t,psshBox:r}}}}else if(T.startsWith(Ha)){const e=T.slice(22),t=Number(e);if(!Number.isInteger(t)||t<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${e}'.`);w(t)}else if(T.startsWith(Va)){const e=b(T.slice(17));if(null===e.offset){if(null===h)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");e.offset=h}f=e,h=e.offset+e.length}else if(T.startsWith(ja)){if(y)continue;const e=T.slice(25),i=Date.parse(e);if(!Number.isFinite(i))continue;const s=i/1e3;if(m===s)continue;if(null===m&&this.segments.length>0){const e=d(this.segments),i=s-(e.timestamp+e.duration);for(const r of this.segments)r.unixEpochTimestamp=r.timestamp+i,t&&(r.timestamp=r.unixEpochTimestamp)}m=s,a=s,t&&(r=s)}else if("#EXT-X-DISCONTINUITY"===T)c=null;else if(T.startsWith(Ka)){const e=T.slice(22),t=Number(e);if(!Number.isFinite(t)||t<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${e}'.`);this.refreshInterval=t,p=t}else{if("#EXT-X-ENDLIST"===T){this.streamHasEnded=!0;break}if(T.startsWith(Xa)){"vod"===T.slice(21).toLowerCase()&&(this.streamHasEnded=!0)}}}else{if("#EXTM3U"!==T)throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");i=!0}}if(!i)throw new Error("Invalid M3U8 file; no #EXTM3U header.")}async getFirstSegment(){return 0===this.segments.length&&await this.runUpdateSegments(),this.segments[0]??null}async getSegmentAt(e,t){0===this.segments.length&&await this.runUpdateSegments();let i=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){const r=A(this.segments,e,e=>e.timestamp);if(-1===r)return null;if(r0;for(;;){if(re.segment===t);if(i)return i.age=this.nextInputCacheAge++,i.input;let r=null;(t.initSegment||t.firstSegment)&&(r=this.getInputForSegment(t.initSegment??t.firstSegment));const a={...this.input._formatOptions,isobmff:{...this.input._formatOptions.isobmff,resolveKeyId:this.input._formatOptions.isobmff?.resolveKeyId&&(e=>{if(!t.encryption||"SAMPLE-AES"!==t.encryption.method&&"SAMPLE-AES-CTR"!==t.encryption.method||!t.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(e);let i=e.psshBoxes;const{psshBox:r}=t.encryption;return null!==r.keyIds&&!r.keyIds.includes(e.keyId)||i.some(e=>Pi(e,r))||(i=[...i,r]),this.input._formatOptions.isobmff.resolveKeyId({...e,psshBoxes:i})})}},s=new po({source:new ss(t.location.path,async e=>{l(e.isRoot);const i={...e,isRoot:!1};let r;const a=t.location.offset>0||null!==t.location.length;if(t.encryption&&"SAMPLE-AES"!==t.encryption.method&&"SAMPLE-AES-CTR"!==t.encryption.method)if("AES-128"===t.encryption.method){const e=t.encryption;l(e.iv);let s=await this.input._getSourceCached(i);if(a){const e=s.source.slice(t.location.offset,t.location.length??void 0).ref();s.free(),s=e}const n=((e,t,i)=>{let r=!1,a=0;const s=new Ui;return new ReadableStream({pull:async n=>{r||(s.init(await t()),r=!0);let o=e.requestSliceRange(a,0,65552);if(de(o)&&(o=await o),!o||0===o.length)throw new Error("Invalid ciphertext.");const c=o.length;if(c%16!==0)throw new Error("Invalid ciphertext.");const l=65552===c?c-16:c,u=To(o,l),d=new Uint8Array(l);for(let e=0;e16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");const t=d.subarray(0,l-e);n.enqueue(t),n.close(),i()}},cancel:()=>{i()}})})(new yo(s.source),async()=>{const t={stack:[],error:void 0,hasError:!1};try{const i=ks(t,await this.input._getSourceCached({path:e.keyUri,isRoot:!1},mo),!1),r=new yo(i.source),a=await r.requestSlice(0,Ri);if(!a)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");return{key:To(a,Ri),iv:e.iv}}catch(i){t.error=i,t.hasError=!0}finally{ys(t)}},()=>{s.free()});r=new fs(n).ref()}else l(!1);else if(r=await this.input._getSourceCached(i),a){const e=r.source.slice(t.location.offset,t.location.length??void 0).ref();r.free(),r=e}return r}),formats:this.input._formats.filter(e=>!(e instanceof qs)),initInput:r??void 0,formatOptions:a});s._onFormatDetermined=e=>{if(("SAMPLE-AES"===t.encryption?.method||"SAMPLE-AES-CTR"===t.encryption?.method)&&!e._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:t,input:s,age:this.nextInputCacheAge++});if(this.inputCache.length>4){const e=be(this.inputCache,e=>e.age);l(-1!==e),this.inputCache.splice(e,1)}return s}async getLiveRefreshInterval(){return 0===this.getRemainingWaitTimeMs()&&await this.runUpdateSegments(),this.streamHasEnded?null:this.refreshInterval}}class Ss extends wi{constructor(e){super(e),this.metadataPromise=null,this.trackBackings=null,this.internalTracks=null,this.segmentedInputs=[],this.hasMasterPlaylist=!0}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{l(this.input._rootSource instanceof rs);const e=await this.input._reader.requestEntireFile();l(e);const t=Lo(e,e.length,{ignore:$a}),{rootPath:i}=this.input._rootSource,r=[],a=[];for(let l=1;l"video"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],n=[...new Set(a.filter(e=>"audio"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],o=await Promise.all(r.map(async(e,t)=>{const r=[],o=e.attributes.get("codecs");let c;if(o)c=o.split(",").map(e=>e.trim());else{const t=this.getSegmentedInputForPath(e.fullPath),i=await t.getTrackBackings(),r=await Promise.all(i.map(async e=>({track:e,codec:await e.getCodec()})));c=await Promise.all(r.filter(e=>null!==e.codec).map(e=>e.track.getDecoderConfig().then(e=>e.codec)))}const u=e.attributes.get("video"),d=e.attributes.get("audio"),h=c.some(e=>$t.includes(li(e))),f=c.some(e=>Qt.includes(li(e)));if(null!==u&&!h){if(!s.includes(u))throw new Error(`Invalid M3U8 file; variant stream references video group "${u}" which is not defined in any #EXT-X-MEDIA tags.`);const e=a.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===u&&"video"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=ke(i,t),a=this.getSegmentedInputForPath(r),s=(await a.getTrackBackings()).find(e=>"video"===e.getType());if(!s||null===await s.getCodec())break e;const n=await s.getDecoderConfig().then(e=>e?.codec??null);l(null!==n),c.push(n)}}if(null!==d&&!f){if(!n.includes(d))throw new Error(`Invalid M3U8 file; variant stream references audio group "${d}" which is not defined in any #EXT-X-MEDIA tags.`);const e=a.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===d&&"audio"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=ke(i,t),a=this.getSegmentedInputForPath(r),s=(await a.getTrackBackings()).find(e=>"audio"===e.getType());if(!s||null===await s.getCodec())break e;const n=await s.getDecoderConfig().then(e=>e?.codec??null);l(null!==n),c.push(n)}}c=[...new Set(c)];let m=null,p=null;const g=e.attributes.getAsNumber("bandwidth");l(null!==g);const k=e.attributes.getAsNumber("average-bandwidth"),y=e.attributes.get("name");for(const i of c){const o=li(i);if(null!==o)if($t.includes(o)){if(null!==m)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");m=i;const n=e.attributes.get("video");if(null===n){const i=e.attributes.get("resolution");let a=null,s=null;if(i){const e=i.match(/^(\d+)x(\d+)$/);e&&(a=Number(e[1]),s=Number(e[2]))}r.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:V,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:m,pairingMask:1n<0?a:null}})}else{if(!n.includes(s))throw new Error(`Invalid M3U8 file; variant stream references audio group "${s}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of a){const a=i.attributes.get("group-id"),n=i.attributes.get("type");if(a!==s||"audio"!==n.toLowerCase())continue;const o=i.attributes.get("channels")??e.attributes.get("channels"),c=null!==o?Number(o.split("/")[0]):null;r.push({id:-1,demuxer:this,backingTrack:null,default:xs(i.attributes),autoselect:xs(i.attributes)||Cs(i.attributes),languageCode:Bs(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:i.fullPath??e.fullPath,fullCodecString:p,pairingMask:1n<0?c:null}})}}}}return r})),c=[],u=e=>{const t=c.find(t=>t.fullPath===e.fullPath&&t.info.type===e.info.type);t?(t.pairingMask|=e.pairingMask,t.default||(t.default=e.default),t.autoselect||(t.autoselect=e.autoselect),t.lineNumber=Math.min(t.lineNumber,e.lineNumber),null!==e.peakBitrate&&(t.peakBitrate=Math.max(t.peakBitrate??-1/0,e.peakBitrate)),null!==e.averageBitrate&&(t.averageBitrate=Math.max(t.averageBitrate??-1/0,e.averageBitrate)),t.languageCode===V&&(t.languageCode=e.languageCode)):(e.id=c.length+1,c.push(e))};for(const l of o)for(const e of l)u(e);c.sort((e,t)=>e.lineNumber-t.lineNumber),this.trackBackings=[];for(const l of c)"video"===l.info.type?this.trackBackings.push(new Ps(l)):this.trackBackings.push(new Is(l));this.internalTracks=c})())}async getTrackBackings(){return await this.readMetadata(),l(this.trackBackings),this.trackBackings}getSegmentedInputForPath(e){let t=this.segmentedInputs.find(t=>t.path===e);if(t)return t;let i=null;if(this.internalTracks){i=this.internalTracks.filter(t=>t.fullPath===e).map(e=>({id:e.id,type:e.info.type}))}return t=new Ts(this,e,i,null),this.segmentedInputs.push(t),t}async getMetadataTags(){return{}}async getMimeType(){return Na}dispose(){if(this.segmentedInputs){for(const e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}}class vs{constructor(e){this.internalTrack=e,this.hydrationPromise=null}hydrate(){return this.hydrationPromise??(this.hydrationPromise=(async()=>{const e=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath);let t=null;const i=(await e.getTrackBackings()).filter(e=>e.getType()===this.getType());if(1===i.length)t=i[0];else if(this instanceof Ps){for(const r of i)if(await r.getCodec()===this.getCodec()){t=r;break}}else{l(this instanceof Is);for(const e of i)if(await e.getCodec()===this.getCodec()){t=e;break}}if(!t)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=t})())}delegate(e){return this.internalTrack.backingTrack?e():this.hydrate().then(e)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return{...Ee,default:this.internalTrack.autoselect,primary:this.internalTrack.default}}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){l(this.internalTrack.demuxer.internalTracks);const e=this.internalTrack.info.type;let t=0;for(const i of this.internalTrack.demuxer.internalTracks)if(i.info.type===e&&t++,i===this.internalTrack)break;return t}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getUnixTimeForTimestamp(e){return this.delegate(()=>this.internalTrack.backingTrack.getUnixTimeForTimestamp(e))}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}async getDurationFromMetadata(e){return await this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(e)}async getLiveRefreshInterval(){return await this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}async getFirstPacket(e){return await this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(e)}async getPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getPacket(e,t)}async getKeyPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(e,t)}async getNextPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getNextPacket(e,t)}async getNextKeyPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(e,t)}}class Ps extends vs{constructor(e){super(e)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return li(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}async getColorSpace(){return await this.hydrate(),this.backingVideoTrack.getColorSpace()}async canBeTransparent(){return await this.hydrate(),this.backingVideoTrack.canBeTransparent()}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingVideoTrack.getDecoderConfig()}}class Is extends vs{constructor(e){super(e)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return li(this.internalTrack.fullCodecString)}getNumberOfChannels(){return null!==this.internalTrack.info.numberOfChannels?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingAudioTrack.getDecoderConfig()}}const xs=e=>{const t=e.get("default");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},Cs=e=>{const t=e.get("autoselect");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},Bs=e=>{if(null===e)return V;const t=e.split("-")[0];return t||V};class Es{constructor(){this._isIsobmff=!1}}class _s extends Es{constructor(){super(...arguments),this._isIsobmff=!0}async _getMajorBrand(e){let t=e._reader.requestSlice(0,12);if(de(t)&&(t=await t),!t)return null;t.skip(4);const i=Oo(t,4);return"ftyp"!==i&&"styp"!==i?null:Oo(t,4)}_createDemuxer(e){return new qi(e)}}class Rs extends _s{async _canReadInput(e){const t=await this._getMajorBrand(e);if(null!==t)return"qt "!==t;let i=0;for(let r=0;r<10;r++){let t=e._reader.requestSlice(i,8);if(de(t)&&(t=await t),!t)return!1;let r=Bo(t),a=8;if(1===r){let t=e._reader.requestSlice(i+8,8);if(de(t)&&(t=await t),!t)return!1;r=Fo(t),a=16}if(r8)return!1;if(fr(i,r)!==sr.EBML)return!1;const a=pr(i);if("number"!==typeof a)return!1;let s=e._reader.requestSlice(i.filePos,a);if(de(s)&&(s=await s),!s)return!1;const n=i.filePos;for(;s.filePos<=n+a-2;){const e=gr(s);if(!e)break;const{id:i,size:r}=e,a=s.filePos;if(void 0===r)return!1;switch(i){case sr.EBMLVersion:if(1!==fr(s,r))return!1;break;case sr.EBMLReadVersion:if(1!==fr(s,r))return!1;break;case sr.DocType:if(kr(s,r)!==t)return!1;break;case sr.DocTypeVersion:if(fr(s,r)>4)return!1}s.filePos=a+r}return!0}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new jr(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class Ds extends As{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class Ms extends Es{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,Vo);if(de(i)&&(i=await i),!i)break;const r=$o(i);if(!r)break;t=i.filePos+r.size}const i=await Gr(e._reader,t,t+4096);if(!i)return!1;const r=i.header,a=mi(r.mpegVersionId,r.channel);let s=e._reader.requestSlice(i.startPos+a,4);if(de(s)&&(s=await s),!s)return!1;const n=Bo(s);if(n===hi||n===fi)return!0;t=i.startPos+i.header.totalSize;const o=await Gr(e._reader,t,t+4);if(!o)return!1;const c=o.header;return r.channel===c.channel&&r.sampleRate===c.sampleRate}_createDemuxer(e){return new Qr(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class Ns extends Es{async _canReadInput(e){let t=e._reader.requestSlice(0,12);if(de(t)&&(t=await t),!t)return!1;const i=Oo(t,4);if("RIFF"!==i&&"RIFX"!==i&&"RF64"!==i)return!1;t.skip(4);return"WAVE"===Oo(t,4)}_createDemuxer(e){return new ha(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class Os extends Es{async _canReadInput(e){let t=e._reader.requestSlice(0,4);return de(t)&&(t=await t),!!t&&"OggS"===Oo(t,4)}_createDemuxer(e){return new na(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class Ls extends Es{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,Vo);if(de(i)&&(i=await i),!i)break;const r=$o(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSlice(t,4);return de(i)&&(i=await i),!!i&&"fLaC"===Oo(i,4)}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new ba(e)}}class zs extends Es{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,Vo);if(de(i)&&(i=await i),!i)break;const r=$o(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSliceRange(t,7,9);if(de(i)&&(i=await i),!i)return!1;const r=pa(i);if(!r)return!1;if(t+=r.frameLength,i=e._reader.requestSliceRange(t,7,9),de(i)&&(i=await i),!i)return!1;const a=pa(i);return!!a&&(r.objectType===a.objectType&&r.samplingFrequencyIndex===a.samplingFrequencyIndex&&r.channelConfiguration===a.channelConfiguration)}_createDemuxer(e){return new ka(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}class Us extends Es{async _canReadInput(e){let t=e._reader.requestSlice(0,205);if(de(t)&&(t=await t),!t)return!1;const i=To(t,205);return 71===i[0]&&71===i[188]||(71===i[0]&&71===i[204]||71===i[4]&&71===i[196])}_createDemuxer(e){return new Ca(e)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}}class qs extends Es{async _canReadInput(e){let t=e._reader.requestSlice(0,7);if(de(t)&&(t=await t),!t)return!1;if(!("#EXTM3U"===Oo(t,7)))return!1;if(!(e._rootSource instanceof rs))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return e._rootSource._usedForHls=!0,!0}_createDemuxer(e){return new Ss(e)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return Na}}const Ws=new Rs,Hs=new Fs,Vs=new As,js=new Ds,Ks=new Ms,Xs=new Ns,$s=new Os,Gs=new zs,Qs=new Ls,Ys=new Us,Js=new qs,Zs=[Js,Ws,Hs,Vs,js,Xs,$s,Qs,Ks,Gs,Ys],en=[Js,Ws,Hs,Ks,Gs,Ys];var tn=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,a=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===a)return a=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return a|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else a|=1}catch(n){i(n)}if(1===a)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});pe();let rn=-1/0,an=-1/0,sn=null;"undefined"!==typeof FinalizationRegistry&&(sn=new FinalizationRegistry(e=>{const t=performance.now();"video"===e.type?(t-rn>=1e3&&(xe._error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),rn=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-an>=1e3&&(xe._error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),an=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));class nn{constructor(){this._referenceCount=0,this._lastAllocationBuffer=null}}const on=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],cn=new Set(on);class ln{get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(J*this.timestamp)}get microsecondDuration(){return Math.trunc(J*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0===t.format||!cn.has(t.format))throw new TypeError("init.format must be one of: "+on.join(", "));if(!Number.isInteger(t.codedWidth)||t.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(t.codedHeight)||t.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.layout){if(!Array.isArray(t.layout))throw new TypeError("init.layout, when provided, must be an array.");for(const e of t.layout){if(!e||"object"!==typeof e||Array.isArray(e))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(e.offset)||e.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(e.stride)||e.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==t.visibleRect&&Te(t.visibleRect,"init.visibleRect"),void 0!==t.displayWidth&&(!Number.isInteger(t.displayWidth)||t.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(void 0!==t.displayHeight&&(!Number.isInteger(t.displayHeight)||t.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(void 0!==t.displayWidth!==(void 0!==t.displayHeight))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this.format=t.format,this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0;const i=t.layout??bn(t.format,t.codedWidth,t.codedHeight);let r=t.colorSpace??null;null===r&&(r="RGBA"===this.format||"RGBX"===this.format||"BGRA"===this.format||"BGRX"===this.format?{primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:{primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.visibleRect={left:t.visibleRect?.left??0,top:t.visibleRect?.top??0,width:t.visibleRect?.width??t.codedWidth,height:t.visibleRect?.height??t.codedHeight},void 0!==t.displayWidth?(this.squarePixelWidth=this.rotation%180===0?t.displayWidth:t.displayHeight,this.squarePixelHeight=this.rotation%180===0?t.displayHeight:t.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height),this._data=t._doNotCopy?p(e):p(e).slice(),this._layout=i,this.colorSpace=new mn(r)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==t?.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==t?.timestamp&&!Number.isFinite(t?.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==t?.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");void 0!==t?.visibleRect&&Te(t.visibleRect,"init.visibleRect"),this._data=e,this._layout=null,this.format=e.format,this.visibleRect={left:e.visibleRect?.x??0,top:e.visibleRect?.y??0,width:e.visibleRect?.width??e.codedWidth,height:e.visibleRect?.height??e.codedHeight},this.rotation=t?.rotation??0,this.squarePixelWidth=e.displayWidth,this.squarePixelHeight=e.displayHeight,this.timestamp=t?.timestamp??e.timestamp/1e6,this.duration=t?.duration??(e.duration??0)/1e6,this.colorSpace=new mn(e.colorSpace)}else if("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.visibleRect&&Te(t.visibleRect,"init.visibleRect"),"undefined"!==typeof VideoFrame)return new ln(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*J),duration:Math.trunc((t.duration??0)*J)||void 0,visibleRect:t.visibleRect&&{x:t.visibleRect.left,y:t.visibleRect.top,width:t.visibleRect.width,height:t.visibleRect.height}}),t);let i=0,r=0;if("naturalWidth"in e?(i=e.naturalWidth,r=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,r=e.videoHeight):"width"in e&&(i=Number(e.width),r=Number(e.height)),!i||!r)throw new TypeError("Could not determine dimensions.");const a=t.visibleRect??{left:0,top:0,width:i,height:r},s=new OffscreenCanvas(a.width,a.height),n=s.getContext("2d",{alpha:ne(),willReadFrequently:!0});if(!n)throw new Error("OffscreenCanvas must have support for the '2d' context in order to create a VideoSample from this data.");n.drawImage(e,-a.left,-a.top),this._data=s,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:a.width,height:a.height},this.squarePixelWidth=a.width,this.squarePixelHeight=a.height,this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0,this.colorSpace=new mn({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else{if(!(e instanceof nn))throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(this._data=e,e._referenceCount++,this.format=e.getFormat(),null!==this.format&&!on.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:e.getCodedWidth(),height:e.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=e.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=e.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0,this.colorSpace=e.getColorSpace()}this.encodeOptions=t?.encodeOptions??{},this.pixelAspectRatio=we({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),sn?.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return l(null!==this._data),this._data instanceof nn?new ln(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):pn(this._data)?new ln(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):this._data instanceof Uint8Array?(l(this._layout),new ln(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions,_doNotCopy:!0})):new ln(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions})}close(){this._closed||(sn?.unregister(this),this._data instanceof nn?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):pn(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){if(yn(e),this._closed)throw new Error("VideoSample is closed.");if(null==(e.format??this.format))throw new Error("Cannot get allocation size when format is null.");if(pn(this._data))return this._data.allocationSize(e);return Tn(this,e).allocationSize}async copyTo(e,t={}){if(!C(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(yn(t),this._closed)throw new Error("VideoSample is closed.");if(null==(t.format??this.format))throw new Error("Cannot copy video sample data when format is null.");if(l(null!==this._data),pn(this._data))return this._data.copyTo(e,t);if(t.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(t.format)){if(!(this._data instanceof nn)){if("undefined"===typeof VideoFrame)throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");const i=this.toVideoFrame(),r=await i.copyTo(e,t);return i.close(),r}{const i={stack:[],error:void 0,hasError:!1};try{const r=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,a;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(a=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");a&&(r=function(){try{a.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t}(i,await this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},t.colorSpace??"srgb"),!1);if(!(r instanceof ln))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(r.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${r.format}' instead.`);return await r.copyTo(e,t)}catch(c){i.error=c,i.hasError=!0}finally{tn(i)}}}const i=Tn(this,t);l(this.format);const r=p(e);if(r.byteLength!(e.data instanceof Uint8Array)||!Number.isInteger(e.stride)||e.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');s=e}else if(this._data instanceof Uint8Array)l(this._layout),l(this._layout.length===a.length),s=this._layout.map((e,t)=>{const i=Math.ceil(this.codedHeight/a[t].heightDivisor);return{data:this._data.subarray(e.offset,e.offset+e.stride*i),stride:e.stride}});else{const e=this._data.getContext("2d");l(e);const t=e.getImageData(0,0,this.codedWidth,this.codedHeight);s=[{data:p(t.data),stride:4*this.codedWidth}]}const n=[],o=a.length;for(let l=0;la.byteLength)throw new Error("Source buffer OOB read.");if(c+u>r.byteLength)throw new Error("Destination buffer OOB write.");const i=a.subarray(o,o+u);r.set(i,c),o+=t,c+=e.destinationStride}n.push(d)}if(void 0!==t.format){const e=this.format.startsWith("RGB")!==t.format.startsWith("RGB"),a=this.format.includes("X")&&t.format.includes("A");if(e||a)for(let t=0;te+t.data.byteLength,0),i=new Uint8Array(t);let r=0;const a=[];for(const s of e)i.set(s.data,r),a.push(r),r+=s.data.byteLength;return new VideoFrame(i,{format:this.format,layout:e.map((e,t)=>({offset:a[t],stride:e.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}return pn(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?(l(this._layout),new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,layout:this._layout,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,i,r,a,s,n,o,c){let l=0,u=0,d=this.displayWidth,h=this.displayHeight,f=0,m=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(l=t,u=i,d=r,h=a,f=s,m=n,void 0!==o?(p=o,g=c):(p=d,g=h)):(f=t,m=i,void 0!==r&&(p=r,g=a)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(l))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(f))throw new TypeError("dx must be a number.");if(!Number.isFinite(m))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:l,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(l,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const y=f+p/2,b=m+g/2;e.translate(y,b),e.rotate(this.rotation*Math.PI/180);const w=this.rotation%180===0?1:p/g;e.scale(1/w,w),e.drawImage(k,l,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&kn(t.crop,"options.");const i=e.canvas.width,r=e.canvas.height,a=t.rotation??this.rotation,[s,n]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let o,c,l,u,d=t.crop;d&&(d=gn(d,s,n));const{sx:h,sy:f,sWidth:m,sHeight:p}=this._rotateSourceRegion(t.crop?.left??0,t.crop?.top??0,t.crop?.width??s,t.crop?.height??n,a);if("fill"===t.fit)o=0,c=0,l=i,u=r;else{const[e,a]=t.crop?[t.crop.width,t.crop.height]:[s,n],d="contain"===t.fit?Math.min(i/e,r/a):Math.max(i/e,r/a);l=e*d,u=a*d,o=(i-l)/2,c=(r-u)/2}e.save();const g=a%180===0?1:l/u;e.translate(i/2,r/2),e.rotate(a*Math.PI/180),e.scale(1/g,g),e.translate(-i/2,-r/2),e.drawImage(this.toCanvasImageSource(),h,f,m,p,o,c,l,u),e.restore()}_rotateSourceRegion(e,t,i,r,a){return 90===a?[e,t,i,r]=[t,this.squarePixelHeight-e-i,r,i]:180===a?[e,t]=[this.squarePixelWidth-e-i,this.squarePixelHeight-t-r]:270===a&&([e,t,i,r]=[this.squarePixelWidth-t-r,e,r,i]),{sx:e,sy:t,sWidth:i,sHeight:r}}_drawWithFitAndMipmapping(e,t,i){const r=e.width,a=e.height,[s,n]=i.rotation%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],o=i.crop?i.crop.width:s,c=i.crop?i.crop.height:n;let l=0;2*r0?fn(u,d):{canvas:e,context:t,isNew:i.targetIsFresh};f.imageSmoothingQuality="high",i.fillBlack?(f.fillStyle="black",f.fillRect(0,0,u,d)):m||f.clearRect(0,0,u,d),this.drawWithFit(f,{fit:i.fit,rotation:i.rotation,crop:i.crop}),f.globalCompositeOperation="copy";for(let p=l;p>1;p--){const e=r*2**p,t=a*2**p;f.drawImage(h,0,0,e,t,0,0,e/2,t/2)}f.globalCompositeOperation="source-over",l>0&&(t.imageSmoothingQuality="high",t.globalCompositeOperation="copy",t.drawImage(h,0,0,2*r,2*a,0,0,r,a),t.globalCompositeOperation="source-over")}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(l(null!==this._data),this._data instanceof nn||this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}async transform(e){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.width&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(void 0!==e.height&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(void 0!==e.roundDimensionsTo&&(!Number.isInteger(e.roundDimensionsTo)||e.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(void 0!==e.fit&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==e.width&&void 0!==e.height&&void 0===e.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==e.rotate&&![0,90,180,270].includes(e.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(void 0!==e.crop&&kn(e.crop,"options."),void 0!==e.alpha&&!["keep","discard"].includes(e.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");const t=u(this.rotation+(e.rotate??0)),[i,r]=t%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let a=e.crop;a&&(a=gn(a,i,r));const s=a?a.width:i,n=a?a.height:r,o=s/n;let c,l;void 0!==e.width&&void 0===e.height?(c=e.width,l=c/o):void 0===e.width&&void 0!==e.height?(l=e.height,c=l*o):void 0!==e.width&&void 0!==e.height?(c=e.width,l=e.height):(c=s,l=n),c=K(c,e.roundDimensionsTo??1),l=K(l,e.roundDimensionsTo??1);const d={width:c,height:l,fit:e.fit??"fill",rotation:t,crop:a??{left:0,top:0,width:i,height:r},alpha:e.alpha??"keep"};for(const u of un){let e=u(this,d);if(de(e)&&(e=await e),null!==e)return e}const{canvas:h,context:f,isNew:m}=fn(d.width,d.height);return this._drawWithFitAndMipmapping(h,f,{fit:d.fit,rotation:d.rotation,crop:d.crop,targetIsFresh:m,fillBlack:"discard"===d.alpha}),new ln(h,{timestamp:this.timestamp,duration:this.duration,rotation:0})}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}setEncodeOptions(e){if(!e||"object"!==typeof e)throw new TypeError("newEncodeOptions must be an object.");this.encodeOptions=e}[Symbol.dispose](){this.close()}}const un=[],dn=[];let hn=0;const fn=(e,t)=>{for(const a of dn)if(a.canvas.width===e&&a.canvas.height===t)return a.age=hn++,{canvas:a.canvas,context:a.context,isNew:!1};let i;if("undefined"!==typeof OffscreenCanvas)i=new OffscreenCanvas(e,t);else{if("undefined"===typeof window||"undefined"===typeof document)throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");i=document.createElement("canvas"),i.width=e,i.height=t}const r=i.getContext("2d",{alpha:!0,willReadFrequently:!1});if(!r)throw new Error("The '2d' canvas context is required to transform VideoSamples. Register a custom transformer using registerVideoSampleTransformer to work around this limitation.");return dn.length>=3&&dn.splice(be(dn,e=>e.age),1),dn.push({canvas:i,context:r,age:hn++}),{canvas:i,context:r,isNew:!0}};class mn{constructor(e){if(void 0!==e){if(!e||"object"!==typeof e)throw new TypeError("init.colorSpace, when provided, must be an object.");const t=Object.keys(b);if(null!=e.primaries&&!t.includes(e.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${t.join(", ")}.`);const i=Object.keys(T);if(null!=e.transfer&&!i.includes(e.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${i.join(", ")}.`);const r=Object.keys(v);if(null!=e.matrix&&!r.includes(e.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${r.join(", ")}.`);if(null!=e.fullRange&&"boolean"!==typeof e.fullRange)throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}this.primaries=e?.primaries??null,this.transfer=e?.transfer??null,this.matrix=e?.matrix??null,this.fullRange=e?.fullRange??null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const pn=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,gn=(e,t,i)=>{const r=Math.min(e.left,t),a=Math.min(e.top,i),s=Math.min(e.width,t-r),n=Math.min(e.height,i-a);return l(s>=0),l(n>=0),{left:r,top:a,width:s,height:n}},kn=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},yn=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},bn=(e,t,i)=>{const r=wn(e),a=[];let s=0;for(const n of r){const e=Math.ceil(t/n.widthDivisor),r=Math.ceil(i/n.heightDivisor),o=e*n.sampleBytes,c=o*r;a.push({offset:s,stride:o}),s+=c}return a},wn=e=>{const t=(e,t,i,r,a)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:i,heightDivisor:r},{sampleBytes:t,widthDivisor:i,heightDivisor:r}];return a&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:z(e),l(!1)}},Tn=(e,t)=>{const i={left:0,top:0,width:e.codedWidth,height:e.codedHeight},r=t.rect,a=Sn(i,r,e.codedWidth,e.codedHeight,e.format),s=t.layout;let n;if(t.format&&t.format!==e.format){if(!["RGBA","RGBX","BGRA","BGRX"].includes(t.format))throw new Error("NotSupportedError: Invalid destination format.");n=t.format}else n=e.format;return Pn(a,n,s)},Sn=(e,t,i,r,a)=>{const s={...e};if(void 0!==t){if(0===t.width||0===t.height)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>i)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");s.x=t.x||0,s.y=t.y||0,s.width=t.width||0,s.height=t.height||0}if(!vn(a,s))throw new TypeError("visibleRect alignment is invalid for the format.");return s},vn=(e,t)=>{if(null===e)return!0;const i=wn(e);for(let r=0;r{const r=wn(t),a=r.length;if(void 0!==i&&i.length!==a)throw new TypeError(`Layout must have ${a} planes.`);let s=0;const n=[],o=[];for(let c=0;c4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(e?.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/(Bn(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let i;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)i=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");i=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const r=this.numberOfFrames*this.numberOfChannels*Bn(this.format);if(i.byteLength=this.numberOfFrames)throw new RangeError("frameOffset out of range");const r=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-i;if(r>this.numberOfFrames-i)throw new RangeError("frameCount out of range");const a=Bn(t),s=En(t);if(s&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!s&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(s?r:r*this.numberOfChannels)*a}copyTo(e,t){if(!C(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!In.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{format:i,frameCount:r,frameOffset:a}=t;let{planeIndex:s}=t,n=this.format;const o=i??this.format;if(!o)throw new Error("Destination format not determined");const c=this.numberOfFrames,u=this.numberOfChannels,d=a??0;if(d>=c)throw new RangeError("frameOffset out of range");const h=void 0!==r?r:c-d;if(h>c-d)throw new RangeError("frameCount out of range");const f=Bn(o),m=En(o);if(m&&s>=u)throw new RangeError("planeIndex out of range");if(!m&&0!==s)throw new RangeError("planeIndex out of range");const p=(m?h:h*u)*f;if(e.byteLength2&&o!==n)return void An(this._data,k,n,o,u,s,d,h);try{return void this._data.copyTo(e,{planeIndex:s,frameOffset:d,frameCount:h,format:o})}catch(P){if("f32-planar"===o)throw P;n="f32-planar"}}const b=_n(n),w=Bn(n),T=En(n);let S;if(this._data instanceof xn){const e=e=>{const t=this._data.getDataPlane(e);if(!(t instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");const i=c*w*(T?1:u);if(t.byteLength!==i)throw new TypeError(`Data plane ${e} has invalid size. Expected exactly ${i} bytes, got ${t.byteLength} bytes.`);return t};if(T)if(m)S=e(s),s=0;else{S=new Uint8Array(c*w*u);for(let t=0;tthis.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t0)for(let r=0;r0&&this.copyTo(a,{planeIndex:0,format:this.format,frameOffset:e,frameCount:i});return new Cn({data:a,format:this.format,sampleRate:this.sampleRate,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp+e/this.sampleRate})}close(){this._closed||(sn?.unregister(this),this._data instanceof xn?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Fn(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof xn?this._createAudioDataFromData():Fn(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(En(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let i=0;i0;){const a=Math.min(s,o),c=new Float32Array(i*a);for(let t=0;t0;){const a=Math.min(s,o),l=new Float32Array(i*a);for(let t=0;t{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},En=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},_n=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},Rn=e=>{switch(e){case"u8":case"u8-planar":return(e,t,i)=>e.setUint8(t,H(127.5*(i+1),0,255));case"s16":case"s16-planar":return(e,t,i)=>e.setInt16(t,H(Math.round(32767*i),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,i)=>e.setInt32(t,H(Math.round(2147483647*i),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,i)=>e.setFloat32(t,i,!0)}},Fn=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,An=(e,t,i,r,a,s,n,o)=>{const c=_n(i),l=Rn(r),u=Bn(i),d=Bn(r),h=En(i);if(En(r))if(h){const r=new ArrayBuffer(o*u),a=g(r);e.copyTo(r,{planeIndex:s,frameOffset:n,frameCount:o,format:i});for(let e=0;e{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(void 0!==e.skipLiveWait&&"boolean"!==typeof e.skipLiveWait)throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},On=e=>{if(!ge(e))throw new TypeError("timestamp must be a number.")},Ln=(e,t,i)=>i.verifyKeyPackets?t.then(async t=>{if(!t||"delta"===t.type)return t;const i=await e.determinePacketType(t);return i&&(t.type=i),t}):t;class zn{constructor(e){if(!(e instanceof eo))throw new TypeError("track must be an InputTrack.");this._track=e}async getFirstPacket(e={}){if(Nn(e),this._track.input._disposed)throw new ko;return Ln(this._track,this._track._backing.getFirstPacket(e),e)}async getFirstKeyPacket(e={}){Nn(e);const t=await this.getFirstPacket(e);return t?"key"===t.type?t:this.getNextKeyPacket(t,e):null}async getPacket(e,t={}){if(On(e),Nn(t),this._track.input._disposed)throw new ko;return Ln(this._track,this._track._backing.getPacket(e,t),t)}async getNextPacket(e,t={}){if(!(e instanceof Si))throw new TypeError("packet must be an EncodedPacket.");if(Nn(t),this._track.input._disposed)throw new ko;return Ln(this._track,this._track._backing.getNextPacket(e,t),t)}async getKeyPacket(e,t={}){if(On(e),Nn(t),this._track.input._disposed)throw new ko;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const i=await this._track._backing.getKeyPacket(e,t);if(!i)return i;l("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getKeyPacket(i.timestamp-1/await this._track.getTimeResolution(),t):i}async getNextKeyPacket(e,t={}){if(!(e instanceof Si))throw new TypeError("packet must be an EncodedPacket.");if(Nn(t),this._track.input._disposed)throw new ko;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const i=await this._track._backing.getNextKeyPacket(e,t);if(!i)return i;l("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getNextKeyPacket(i,t):i}packets(e,t,i={}){if(void 0!==e&&!(e instanceof Si))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!i?.metadataOnly)throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof Si))throw new TypeError("endPacket must be an EncodedPacket.");if(Nn(i),this._track.input._disposed)throw new ko;const r=[];let{promise:a,resolve:s}=M(),{promise:n,resolve:o}=M(),c=!1,l=!1,u=null,d=!1;const h=[],f=()=>Math.max(2,h.length);(async()=>{let u=e??await this.getFirstPacket(i);for(;u&&!l&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=t?.sequenceNumber);)r.length>f()?(({promise:n,resolve:o}=M()),await n):(r.push(u),s(),({promise:a,resolve:s}=M()),u=await this.getNextPacket(u,i));c=!0,s()})().catch(e=>{d||(u=e,d=!0,s())});const m=this._track;return{async next(){for(;;){if(m.input._disposed)throw new ko;if(l)return{value:void 0,done:!0};if(d)throw u;if(r.length>0){const e=r.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};await a}},return:async()=>(l=!0,o(),s(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}class Un{constructor(e,t){this.onSample=e,this.onError=t}}class qn{mediaSamplesInRange(e=-1/0,t=1/0,i){On(e),On(t);const r=[];let a=!1,s=null,{promise:n,resolve:o}=M(),{promise:c,resolve:l}=M(),u=!1,d=!1,h=!1,f=null,m=null,p=!1;const g={...i,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{f=await this._createDecoder(i=>{l(),i.timestamp>=t&&(d=!0),d?i.close():(s&&(i.timestamp>e?(r.push(s),a=!0):s.close()),i.timestamp>=e&&(r.push(i),a=!0),s=a?null:i,r.length>0&&(o(),({promise:n,resolve:o}=M())))},e=>{p||(m=e,p=!0,o())});const i=this._createPacketSink(),k=await i.getKeyPacket(e,g)??await i.getFirstKeyPacket(g);let y=k;const b=i.packets(k??void 0,void 0,g);for(await b.next();y&&!d&&!this._track.input._disposed;){const e=Wn(r.length);if(r.length+f.getDecodeQueueSize()>e){({promise:c,resolve:l}=M()),await c;continue}f.decode(y);const t=await b.next();if(t.done)break;y=t.value}await b.return(),h||this._track.input._disposed||await f.flush(),!a&&s&&r.push(s),u=!0,o()})().catch(e=>{p||(m=e,p=!0,o())}).finally(()=>{f?.close()});const k=this._track,y=()=>{s?.close();for(const e of r)e.close()};return{async next(){for(;;){if(k.input._disposed)throw h=!0,d=!0,y(),new ko;if(h)return{value:void 0,done:!0};if(p)throw h=!0,d=!0,y(),m;if(r.length>0){const e=r.shift();return l(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};await n}},return:async()=>(h=!0,d=!0,l(),o(),y(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e,t){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const i=async function*(e){Symbol.iterator in e?yield*e[Symbol.iterator]():yield*e[Symbol.asyncIterator]()}(e),r=[],a=[];let{promise:s,resolve:n}=M(),{promise:o,resolve:c}=M(),u=!1,d=!1,h=null,f=null,m=!1;const p=e=>{a.push(e),n(),({promise:s,resolve:n}=M())},g={...t,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{h=await this._createDecoder(e=>{if(c(),d)return void e.close();let t=0;for(;r.length>0&&e.timestamp-r[0]>-1e-10;)t++,r.shift();if(t>0)for(let i=0;i{m||(f=e,m=!0,n())});const e=this._createPacketSink();let t=null,s=null,k=-1;const y=async()=>{l(s),l(h);let t=s;for(h.decode(t);t.sequenceNumberi&&!d;)({promise:o,resolve:c}=M()),await o;if(d)break;const r=await e.getNextPacket(t,g);l(r),h.decode(r),t=r}k=-1},b=async()=>{l(h),await h.flush();for(let e=0;e{m||(f=e,m=!0,n())}).finally(()=>{h?.close()});const k=this._track,y=()=>{for(const e of a)e?.close()};return{async next(){for(;;){if(k.input._disposed)throw d=!0,y(),new ko;if(d)return{value:void 0,done:!0};if(m)throw d=!0,y(),f;if(a.length>0){const e=a.shift();return l(void 0!==e),c(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};await s}},return:async()=>(d=!0,c(),n(),y(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}const Wn=e=>0===e?40:8;class Hn extends Un{constructor(e,t,i,r,a,s){super(e,t),this.codec=i,this.decoderConfig=r,this.rotation=a,this.timeResolution=s,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ie,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1,this.finalSamples=[],this.mergeAlphaPromises=[];const n=Dn.find(e=>e.supports(i,r));if(n)this.customDecoder=new n,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof ln))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();l(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if(ce()){if("avc"===i&&this.decoderConfig.description){const e=Je(p(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=et(e.sequenceParameterSets[0]);t&&(0===t.frameMbsOnlyFlag&&(this.decoderConfig={...this.decoderConfig,hardwareAcceleration:"prefer-software"}),0!==t.maxDecFrameBuffering&&1!==t.bitstreamRestrictionFlag&&(e.sequenceParameterSets[0]=it(t),this.decoderConfig={...this.decoderConfig,description:Ye(e)}))}}I(this.decoderConfig.colorSpace)||(this.decoderConfig={...this.decoderConfig,colorSpace:{primaries:this.decoderConfig.colorSpace?.primaries??"bt709",matrix:this.decoderConfig.colorSpace?.matrix??"bt709",transfer:this.decoderConfig.colorSpace?.transfer??"bt709",fullRange:this.decoderConfig.colorSpace?.fullRange??!1}})}const t=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(l(this.decoder),Math.max(this.decoder.decodeQueueSize,this.alphaDecoder?.decodeQueueSize??0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--);else{if(l(this.decoder),ae()||D(this.inputTimestamps,e.timestamp,e=>e),ce()&&0===this.currentPacketIndex)if("avc"===this.codec){const t=[];let i=!1;for(const a of Ve(e.data,this.decoderConfig)){const r=je(e.data[a.offset]);if(i||(i=r>=1&&r<=5),r===Le.AUD){if(i)break;t.length=0}r>=20&&r<=31||t.push(e.data.subarray(a.offset,a.offset+a.length))}if(!this.decoderConfig.description)for(let e=0;e{if(t.description){const i=3&p(t.description)[4];return Ge(e,i+1)}return $e(e)})(t,this.decoderConfig);e=new Si(r,e.type,e.timestamp,e.duration)}else if("hevc"===this.codec){const t=gt(e.data,this.decoderConfig);t&&(e=new Si(t,e.type,e.timestamp,e.duration))}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha)return void this.pushNullAlphaFrame();if(this.merger||(this.merger=new jn),!this.alphaDecoder){const e=e=>{if(this.colorQueue.length>0){const t=this.colorQueue.shift();l(void 0!==t),this.mergeAlpha(t,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();l(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=Pt(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(t??e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(const t of rt(e,this.decoderConfig)){const i=at(e[t.offset]);if(i===Ue.RASL_N||i===Ue.RASL_R)return!0}return!1}sampleHandler(e){if(ae()){if(this.sampleQueue.length>0&&e.timestamp>=d(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}D(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();l(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}async mergeAlpha(e,t){const i=M();this.mergeAlphaPromises.push(i.promise);const r={sample:null};this.finalSamples.push(r);try{if(t){l(this.merger);const i=await this.merger.merge(e,t);r.sample=new ln(i)}else r.sample=new ln(e);for(;this.finalSamples.length>0&&null!==this.finalSamples[0].sample;){const e=this.finalSamples.shift();this.sampleHandler(e.sample)}}catch(a){N(this.finalSamples,r),this.onError(a)}finally{N(this.mergeAlphaPromises,i.promise),i.resolve()}}async flush(){if(this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(l(this.decoder),await Promise.all([this.decoder.flush(),this.alphaDecoder?.flush()]),await Promise.all(this.mergeAlphaPromises),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),ae()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(l(this.decoder),"closed"!==this.decoder.state&&this.decoder.close(),this.alphaDecoder&&"closed"!==this.alphaDecoder.state&&this.alphaDecoder.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.merger?.close());for(const e of this.sampleQueue)e.close();this.sampleQueue.length=0}}let Vn=null;class jn{constructor(){this.workers=[],this.nextWorkerIndex=0,this.pendingRequests=new Map,this.nextRequestId=0}merge(e,t){if(0===this.workers.length){if(!Vn){const e=new Blob([`(${Kn.toString()})()`],{type:"application/javascript"});Vn=URL.createObjectURL(e)}const e=H(navigator.hardwareConcurrency,1,4);for(let t=0;t{const t=e.data,i=this.pendingRequests.get(t.id);i&&(this.pendingRequests.delete(t.id),"error"in t?i.reject(new Error(t.error)):i.resolve(t.frame))}),e.addEventListener("error",e=>{const t=new Error(e.message||"Color/alpha merge worker error.");for(const i of this.pendingRequests.values())i.reject(t);this.pendingRequests.clear()}),this.workers.push(e)}}const i=this.nextRequestId++,r=M();this.pendingRequests.set(i,r);const a=this.workers[this.nextWorkerIndex];return this.nextWorkerIndex=(this.nextWorkerIndex+1)%this.workers.length,a.postMessage({id:i,color:e,alpha:t},{transfer:[e,t]}),r.promise}close(){for(const t of this.workers)t.terminate();this.workers.length=0;const e=new Error("Color/alpha merger closed.");for(const t of this.pendingRequests.values())t.reject(e);this.pendingRequests.clear()}}const Kn=()=>{let e=null,t=null,i=Promise.resolve();self.addEventListener("message",e=>{const{id:t,color:a,alpha:s}=e.data;i=i.then(async()=>{try{const e=await r(a,s);self.postMessage({id:t,frame:e},{transfer:[e]})}catch(e){self.postMessage({id:t,error:e.message})}finally{a.close(),s.close()}})});const r=async(e,t)=>{const i=e.format,r=t.format;if(!i||!r)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");const o=i.includes("P10"),c=i.includes("P12"),l=r.includes("P10"),u=r.includes("P12");if(l!==o||u!==c)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${i}', alpha: '${r}').`);if("RGBX"===i||"RGBA"===i||"BGRX"===i||"BGRA"===i)return await a(e,t,i);if("I420"===i||"I420P10"===i||"I420P12"===i||"I422"===i||"I422P10"===i||"I422P12"===i||"I444"===i||"I444P10"===i||"I444P12"===i)return await s(e,t,i);if("NV12"===i)return await n(e,t);throw new Error(`CPU color/alpha merging does not support format '${i}'.`)},a=async(e,t,i)=>{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=r*a,n=new Uint8Array(4*s);await e.copyTo(n);const c=await o(t,r,a,1);for(let o=0,u=3;o{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=i.includes("P10"),n=i.includes("P12"),c=s||n?2:1;let l,u;i.startsWith("I420")?(l=Math.ceil(r/2),u=Math.ceil(a/2)):i.startsWith("I422")?(l=Math.ceil(r/2),u=a):(l=r,u=a);const d=r*a,h=d*c,f=l*u*c,m=new Uint8Array(h+2*f+d*c);await e.copyTo(m);const p=await o(t,r,a,c),g=h+2*f;m.set(p,g);const k={format:i.slice(0,4)+"A"+i.slice(4),codedWidth:r,codedHeight:a,timestamp:e.timestamp,duration:e.duration??void 0,transfer:[m.buffer]};return new VideoFrame(m,k)},n=async(e,i)=>{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=r*a,n=Math.ceil(r/2)*Math.ceil(a/2),c=e.allocationSize();t&&t.byteLength===c||(t=new Uint8Array(c)),await e.copyTo(t);const l=new Uint8Array(s+2*n+s);l.set(t.subarray(0,s),0);const u=s,d=s+n,h=s;for(let o=0;o{const s=t.allocationSize();e&&e.byteLength===s||(e=new Uint8Array(s)),await t.copyTo(e);const n=t.format;if("RGBA"===n||"BGRA"===n||"RGBX"===n||"BGRX"===n){const t="RGBA"===n||"RGBX"===n?0:2,a=i*r;for(let i=0;i{if(!e||"object"!==typeof e)throw new TypeError("decoderOptions must be an object.");if(void 0!==e.hardwareAcceleration&&!["no-preference","prefer-hardware","prefer-software"].includes(e.hardwareAcceleration))throw new TypeError("decoderOptions.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(void 0!==e.optimizeForLatency&&"boolean"!==typeof e.optimizeForLatency)throw new TypeError("decoderOptions.optimizeForLatency, when provided, must be a boolean.")};class $n extends qn{constructor(e,t={}){if(!(e instanceof ro))throw new TypeError("videoTrack must be an InputVideoTrack.");Xn(t),super(),this._track=e,this._decoderOptions=t}async _createDecoder(e,t){if(!(await this._track.canDecode())){if("undefined"===typeof VideoDecoder)throw new Error(le("VideoDecoder"));throw new Error("This video track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=await this._track.getCodec(),r=await this._track.getRotation();let a=await this._track.getDecoderConfig();const s=await this._track.getTimeResolution();return l(i&&a),a={...a,hardwareAcceleration:this._decoderOptions.hardwareAcceleration,optimizeForLatency:this._decoderOptions.optimizeForLatency},new Hn(e,t,i,a,r,s)}_createPacketSink(){return new zn(this._track)}async getSample(e,t={}){On(e);for await(const i of this.mediaSamplesAtTimestamps([e],t))return i;throw new Error("Internal error: Iterator returned nothing.")}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class Gn{constructor(e,t={}){if(this._rotation=0,this._initPromise=null,this._nextCanvasIndex=0,!(e instanceof ro))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&kn(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");void 0!==t.decoderOptions&&Xn(t.decoderOptions),this._videoTrack=e,this._alpha=t.alpha??!1,this._options=t,this._fit=t.fit??"fill",this._videoSampleSink=new $n(e,t.decoderOptions),this._canvasPool=Array.from({length:t.poolSize??0},()=>null)}_ensureInit(){return this._initPromise??(this._initPromise=(async()=>{const e=this._options,t=this._videoTrack,i=e.rotation??await t.getRotation(),r=await t.getSquarePixelWidth(),a=await t.getSquarePixelHeight(),[s,n]=i%180===0?[r,a]:[a,r];let o=e.crop;o&&(o=gn(o,s,n));let[c,l]=o?[o.width,o.height]:[s,n];const u=c/l;void 0!==e.width&&void 0===e.height?(c=e.width,l=Math.round(c/u)):void 0===e.width&&void 0!==e.height?(l=e.height,c=Math.round(l*u)):void 0!==e.width&&void 0!==e.height&&(c=e.width,l=e.height),this._width=c,this._height=l,this._rotation=i,this._crop=o})())}_videoSampleToWrappedCanvas(e){const t=this._width,i=this._height;let r=this._canvasPool[this._nextCanvasIndex],a=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=t,r.height=i):r=new OffscreenCanvas(t,i),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),a=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const s=r.getContext("2d",{alpha:this._alpha||ne()});l(s),e._drawWithFitAndMipmapping(r,s,{fit:this._fit,rotation:this._rotation,crop:this._crop,targetIsFresh:a,fillBlack:!this._alpha&&ne()});const n={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),n}async getCanvas(e,t){On(e),await this._ensureInit();const i=await this._videoSampleSink.getSample(e,t);return i&&this._videoSampleToWrappedCanvas(i)}async*canvases(e,t,i){await this._ensureInit(),yield*W(this._videoSampleSink.samples(e,t,i),e=>this._videoSampleToWrappedCanvas(e))}async*canvasesAtTimestamps(e,t){await this._ensureInit(),yield*W(this._videoSampleSink.samplesAtTimestamps(e,t),e=>e&&this._videoSampleToWrappedCanvas(e))}}class Qn extends Un{constructor(e,t,i,r){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ie,this.customDecoderQueueSize=0,this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0;const a=t=>{let i=t.timestamp;null!==this.expectedFirstTimestamp&&null===this.currentTimestamp&&(this.timestampOffset=this.expectedFirstTimestamp-i),i+=this.timestampOffset,(null===this.currentTimestamp||Math.abs(i-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=i);const a=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const s=r.sampleRate;t.setTimestamp(Math.round(a*s)/s),e(t)},s=Mn.find(e=>e.supports(i,r));if(s)this.customDecoder=new s,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof Cn))throw new TypeError("The argument passed to onSample must be an AudioSample.");a(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{a(new Cn(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(r)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(l(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--)):(l(this.decoder),this.expectedFirstTimestamp??(this.expectedFirstTimestamp=e.timestamp),this.decoder.decode(e.toEncodedAudioChunk()))}async flush(){this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(l(this.decoder),await this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(l(this.decoder),"closed"!==this.decoder.state&&this.decoder.close())}}class Yn extends Un{constructor(e,t,i){super(e,t),this.decoderConfig=i,this.currentTimestamp=null,l(Gt.includes(i.codec)),this.codec=i.codec;const{dataType:r,sampleSize:a,littleEndian:s}=ci(this.codec);switch(this.inputSampleSize=a,a){case 1:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint8(t)-128:"signed"===r?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===r?this.readInputValue=(e,t)=>(e=>{let t=0,i=0,r=~e;128&r&&(r&=-129,t=-1),i=5+((240&r)>>4);const a=(1<(e=>{let t=0,i=0,r=85^e;128&r&&(r&=-129,t=-1),i=4+((240&r)>>4);let a=0;return a=4!==i?1<e.getUint16(t,s)-32768:"signed"===r?this.readInputValue=(e,t)=>e.getInt16(t,s):l(!1);break;case 3:"unsigned"===r?this.readInputValue=(e,t)=>U(e,t,s)-2**23:"signed"===r?this.readInputValue=(e,t)=>((e,t,i)=>U(e,t,i)<<8>>8)(e,t,s):l(!1);break;case 4:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint32(t,s)-2**31:"signed"===r?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===r?this.readInputValue=(e,t)=>e.getFloat32(t,s):l(!1);break;case 8:"float"===r?this.readInputValue=(e,t)=>e.getFloat64(t,s):l(!1);break;default:z(a),l(!1)}switch(a){case 1:"ulaw"===r||"alaw"===r?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,i)=>e.setUint8(t,i+128));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i<<8,!0);break;case 4:this.outputSampleSize=4,"float"===r?(this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0);break;default:z(a),l(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=g(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,r=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,a=new ArrayBuffer(r),s=new DataView(a);for(let l=0;l=n)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=n;const c=new Cn({format:this.outputFormat,data:a,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:o});this.onSample(c)}async flush(){}close(){}}class Jn extends qn{constructor(e){if(!(e instanceof ao))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}async _createDecoder(e,t){if(!(await this._track.canDecode())){if("undefined"===typeof AudioDecoder)throw new Error(le("AudioDecoder"));throw new Error("This audio track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=await this._track.getCodec(),r=await this._track.getDecoderConfig();return l(i&&r),Gt.includes(r.codec)?new Yn(e,t,r):new Qn(e,t,i,r)}_createPacketSink(){return new zn(this._track)}async getSample(e,t={}){On(e);for await(const i of this.mediaSamplesAtTimestamps([e],t))return i;throw new Error("Internal error: Iterator returned nothing.")}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class Zn{constructor(e){if(!(e instanceof ao))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new Jn(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}async getBuffer(e,t){On(e);const i=await this._audioSampleSink.getSample(e,t);return i&&this._audioSampleToWrappedArrayBuffer(i)}buffers(e,t,i){return W(this._audioSampleSink.samples(e,t,i),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e,t){return W(this._audioSampleSink.samplesAtTimestamps(e,t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class eo{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof ro}isAudioTrack(){return this instanceof ao}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}async getInternalCodecId(){return this._backing.getInternalCodecId()}get internalCodecId(){return to(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}async getLanguageCode(){return this._backing.getLanguageCode()}get languageCode(){return to(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}async getName(){return this._backing.getName()}get name(){return to(this._backing.getName(),"name","getName")}async getTimeResolution(){return this._backing.getTimeResolution()}get timeResolution(){return to(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}async isRelativeToUnixEpoch(){return this._backing.isRelativeToUnixEpoch()}async getUnixTimeForTimestamp(e){return this._backing.getUnixTimeForTimestamp(e)}async hasUnixTimeMapping(){return null!==await this._backing.getUnixTimeForTimestamp(await this.getFirstTimestamp())}async getDisposition(){return this._backing.getDisposition()}get disposition(){return to(this._backing.getDisposition(),"disposition","getDisposition")}async getBitrate(){return this._backing.getBitrate()}async getAverageBitrate(){return this._backing.getAverageBitrate()}async getFirstTimestamp(){const e=await this._backing.getFirstPacket({metadataOnly:!0});return e?.timestamp??0}async computeDuration(e){const t=await this._backing.getPacket(1/0,{metadataOnly:!0,...e});return X((t?.timestamp??0)+(t?.duration??0),await this.getTimeResolution())}async getDurationFromMetadata(e={}){return this._backing.getDurationFromMetadata(e)}async computePacketStats(e=1/0,t){const i=new zn(this);let r=1/0,a=-1/0,s=0,n=0;for await(const o of i.packets(void 0,void 0,{metadataOnly:!0,...t})){if(s>=e&&o.timestamp>=a)break;r=Math.min(r,o.timestamp),a=Math.max(a,o.timestamp+o.duration),s++,n+=o.byteLength}return{packetCount:s,averagePacketRate:s?Number((s/(a-r)).toPrecision(16)):0,averageBitrate:s?Number((8*n/(a-r)).toPrecision(16)):0}}async isLive(){return null!==await this._backing.getLiveRefreshInterval()}async getLiveRefreshInterval(){return this._backing.getLiveRefreshInterval()}canBePairedWith(e){if(!(e instanceof eo))throw new TypeError("other must be an InputTrack.");return this.input===e.input&&this!==e&&0n!==(this._backing.getPairingMask()&e._backing.getPairingMask())}async getPairableTracks(e){return this.input.getTracks(co({filter:e=>e.canBePairedWith(this)},e))}async getPairableVideoTracks(e){return this.input.getVideoTracks(co({filter:e=>e.canBePairedWith(this)},e))}async getPairableAudioTracks(e){return this.input.getAudioTracks(co({filter:e=>e.canBePairedWith(this)},e))}async getPrimaryPairableVideoTrack(e){return this.input.getPrimaryVideoTrack(co({filter:e=>e.canBePairedWith(this)},e))}async getPrimaryPairableAudioTrack(e){return this.input.getPrimaryAudioTrack(co({filter:e=>e.canBePairedWith(this)},e))}async hasPairableTrack(e){e&&(e=io(e));const t=await this.input.getTracks();for(const i of t)if(this.canBePairedWith(i)&&(!e||await e(i)))return!0;return!1}hasPairableVideoTrack(e){return e&&(e=io(e)),this.hasPairableTrack(async t=>t.isVideoTrack()&&(!e||await e(t)))}hasPairableAudioTrack(e){return e&&(e=io(e)),this.hasPairableTrack(async t=>t.isAudioTrack()&&(!e||await e(t)))}}const to=(e,t,i)=>{if(de(e))throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${i}()' instead.`);return e},io=e=>{if(void 0!==e&&"function"!==typeof e)throw new TypeError("predicate, when provided, must be a function.");return e?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("predicate must return or resolve to a boolean value.");return e},r=e(t);return de(r)?r.then(i):i(r)}:void 0};class ro extends eo{constructor(e,t){super(e,t),this._pixelAspectRatioCache=null,this._backing=t}get type(){return"video"}async getCodec(){return this._backing.getCodec()}get codec(){return to(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await(this._backing.getHasOnlyKeyPackets?.())??"prores"===await this._backing.getCodec()}async getCodedWidth(){return this._backing.getCodedWidth()}get codedWidth(){return to(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}async getCodedHeight(){return this._backing.getCodedHeight()}get codedHeight(){return to(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}async getRotation(){return this._backing.getRotation()}get rotation(){return to(this._backing.getRotation(),"rotation","getRotation")}async getSquarePixelWidth(){return this._backing.getSquarePixelWidth()}get squarePixelWidth(){return to(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}async getSquarePixelHeight(){return this._backing.getSquarePixelHeight()}get squarePixelHeight(){return to(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}async getPixelAspectRatio(){return this._pixelAspectRatioCache??(this._pixelAspectRatioCache=we({num:await this.getSquarePixelWidth()*await this.getCodedHeight(),den:await this.getSquarePixelHeight()*await this.getCodedWidth()}))}get pixelAspectRatio(){return this._pixelAspectRatioCache??(this._pixelAspectRatioCache=we({num:to(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*to(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:to(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*to(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")}))}async getDisplayWidth(){const e=await(this._backing.getMetadataDisplayWidth?.());if(null!=e)return e;return await this.getRotation()%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight()}get displayWidth(){const e=this._backing.getMetadataDisplayWidth?.();if(void 0!==e){const t=to(e,"displayWidth","getDisplayWidth");if(null!==t)return t}const t=to(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return to(t,"displayWidth","getDisplayWidth")}async getDisplayHeight(){const e=await(this._backing.getMetadataDisplayHeight?.());if(null!=e)return e;return await this.getRotation()%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth()}get displayHeight(){const e=this._backing.getMetadataDisplayHeight?.();if(void 0!==e){const t=to(e,"displayHeight","getDisplayHeight");if(null!==t)return t}const t=to(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return to(t,"displayHeight","getDisplayHeight")}async getColorSpace(){return this._backing.getColorSpace()}async hasHighDynamicRange(){const e=await this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pq"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix}async canBeTransparent(){return this._backing.canBeTransparent()}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await(this._backing.getMetadataCodecParameterString?.());if(null!=e)return e;const t=await this._backing.getDecoderConfig();return t?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const t=await this._backing.getCodec();if(l(null!==t),Dn.some(i=>i.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(await VideoDecoder.isConfigSupported(e)).supported}catch(e){return xe._error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Si))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");const t=await this.getCodec();if(null===t)return null;const i=await this.getDecoderConfig();return l(i),Pt(t,i,e.data)}async computeFrameRateMetrics(e={}){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.targetPacketCount&&(!ge(e.targetPacketCount)||e.targetPacketCount<0))throw new TypeError("options.targetPacketCount must be a non-negative number.");const t=await this.getTimeResolution(),i=e.targetPacketCount??256,r=new zn(this),a=[];let s=-1/0,n=0;for await(const I of r.packets(void 0,void 0,{metadataOnly:!0})){if(a.length>=i&&I.timestamp>=s)break;a.push(I.timestamp),s=Math.max(s,I.timestamp),n++}const o=new Float64Array(a.length);for(let I=0;Ie-t),b=k-1>>1,w=k>>1;let T=0,S=0,v=0;for(const I of y)if(v+=f.get(I),0===T&&v>b&&(T=I),v>w){S=I;break}const P=(d/T+d/S)/2;return{underlyingFrameRate:u,bestGuessFrameRate:null!==u?u:fo(P),minFrameRate:d/p,maxFrameRate:d/m,averageFrameRate:d*k/g,medianFrameRate:P,frameRateIsConstant:null!==u&&1===m&&1===p,probedPacketCount:n}}}class ao extends eo{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}async getCodec(){return this._backing.getCodec()}get codec(){return to(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await(this._backing.getHasOnlyKeyPackets?.())??!0}async getNumberOfChannels(){return this._backing.getNumberOfChannels()}get numberOfChannels(){return to(this._backing.getNumberOfChannels(),"numberOfChannels","getNumberOfChannels")}async getSampleRate(){return this._backing.getSampleRate()}get sampleRate(){return to(this._backing.getSampleRate(),"sampleRate","getSampleRate")}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await(this._backing.getMetadataCodecParameterString?.());if(null!=e)return e;const t=await this._backing.getDecoderConfig();return t?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const t=await this._backing.getCodec();if(l(null!==t),Mn.some(i=>i.supports(t,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof AudioDecoder)return!1;return!0===(await AudioDecoder.isConfigSupported(e)).supported}catch(e){return xe._error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Si))throw new TypeError("packet must be an EncodedPacket.");return null===await this.getCodec()?null:"key"}}const so=e=>-(e??-1/0),no=e=>-e,oo=e=>{if("object"!==typeof e||!e)throw new TypeError("query must be an object.");if(void 0!==e.filter&&"function"!==typeof e.filter)throw new TypeError("query.filter, when provided, must be a function.");if(void 0!==e.sortBy&&"function"!==typeof e.sortBy)throw new TypeError("query.sortBy, when provided, must be a function.");return{filter:e.filter?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("query.filter must return or resolve to a boolean.");return e},r=e.filter(t);return de(r)?r.then(i):i(r)}:void 0,sortBy:e.sortBy?t=>{const i=e=>{if("number"!==typeof e&&(!Array.isArray(e)||!e.every(e=>"number"===typeof e)))throw new TypeError("query.sortBy must return or resolve to a number or an array of numbers.");return e},r=e.sortBy(t);return de(r)?r.then(i):i(r)}:void 0}},co=(e,t)=>({filter:e?.filter||t?.filter?i=>{const r=e?.filter?.(i)??!0,a=e=>!1!==e&&(t?.filter?.(i)??!0);return de(r)?r.then(a):a(r)}:void 0,sortBy:e?.sortBy||t?.sortBy?i=>{const r=e?.sortBy?.(i)??[],a=t?.sortBy?.(i)??[],s=(e,t)=>[...Array.isArray(e)?e:[e],...Array.isArray(t)?t:[t]];return de(r)||de(a)?Promise.all([r,a]).then(([e,t])=>s(e,t)):s(r,a)}:void 0}),lo=async(e,t)=>{let i=e;if(t?.filter){const r=e.map(e=>t.filter(e));if(r.some(e=>de(e))){const t=await Promise.all(r);i=e.filter((e,i)=>t[i])}else i=e.filter((e,t)=>r[t])}if(!t?.sortBy)return i;const r=i.map(e=>t.sortBy(e)),a=r.some(e=>de(e))?await Promise.all(r):r;return i.map((e,t)=>({track:e,sortValue:a[t]})).sort((e,t)=>{const i=Array.isArray(e.sortValue)?e.sortValue:[e.sortValue],r=Array.isArray(t.sortValue)?t.sortValue:[t.sortValue],a=Math.max(i.length,r.length);for(let s=0;se.track)},uo=(e,t)=>{const i=1e6,r=1+1e-9,a=[12,15,20,24e3/1001,24,25,3e4/1001,30,48,50,6e4/1001,60,100,12e4/1001,120,144,240];if(e.length<2)return null;const s=new Float64Array(e.length-1);for(let T=1;T0))return null;s[T-1]=t}const n=s.slice();n.sort();let o=n[Math.floor(.05*n.length)];for(let T=0;T<6;T++){let e=0,t=0;for(const a of s){const i=Math.max(1,Math.round(a/o));Math.abs(a-i*o)>=r||(e+=a,t+=i)}if(0===t)return null;const i=e/t;if(Math.abs(i-o)<=1e-12*Math.max(1,o)){o=i;break}o=i}let c=0,l=0,u=0;for(const T of s){const e=Math.max(1,Math.round(T/o));Math.abs(T-e*o)>=r||(c++,l+=T,u+=e)}if(c/s.length<.98)return null;o=l/u;const d=1/Math.min(u,1e3),h=Math.max(Number.EPSILON,o-d),f=o+d,m=t/f,p=t/h,g=t/o;let k=null,y=1/0;for(const T of a){if(Tp)continue;const e=Math.abs(T/g-1);e{for(let r=1;r<=i;r++){const i=Math.floor(e*r)+1;if(i/r{const t=[24/1.001,30/1.001,60/1.001,120/1.001],i=[12,15,20,24,25,30,48,50,60,100,120,144,240];for(const s of t)if(Math.abs(s/e-1)<=5e-4)return s;let r=e,a=1/0;for(const s of i){const t=Math.abs(s/e-1);t<=.025&&t!(e instanceof Es)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(e.source instanceof ts||e.source instanceof is))throw new TypeError("options.source must be a Source or SourceRef.");if(e.source instanceof ts&&e.source._disposed)throw new TypeError("options.source must not be a disposed Source.");if(void 0!==e.initInput&&!(e.initInput instanceof po))throw new TypeError("options.initInput, when provided, must be an Input.");void 0!==e.formatOptions&&((e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(`${t}, when provided, must be an object.`);if(void 0!==e.isobmff){if(!e.isobmff||"object"!==typeof e.isobmff)throw new TypeError(`${t}.isobmff, when provided, must be an object.`);if(void 0!==e.isobmff.resolveKeyId&&"function"!==typeof e.isobmff.resolveKeyId)throw new TypeError(`${t}.isobmff.resolveKeyId, when provided, must be a function.`)}if(void 0!==e.hls){if(!e.hls||"object"!==typeof e.hls)throw new TypeError(`${t}.hls, when provided, must be an object.`);if(void 0!==e.hls.offsetTimestampsByDateTime&&"boolean"!==typeof e.hls.offsetTimestampsByDateTime)throw new TypeError(`${t}.hls.offsetTimestampsByDateTime, when provided, must be a boolean.`)}})(e.formatOptions,"formatOptions"),this._formats=e.formats,this._initInput=e.initInput??null,this._formatOptions=e.formatOptions??{},e.source instanceof ts?this._rootRef=e.source.ref():this._rootRef=e.source,this._sourceRefs.push(this._rootRef)}get _rootSource(){return this._rootRef.source}async _getSourceUncached(e){l(this._rootSource instanceof rs);const t=await this._rootSource._resolveRequest(e);return this._emit("source",{source:t.source,request:e,isRoot:e.isRoot}),t}_getSourceCached(e,t=1){const i=this._sourceCache.find(i=>i.cacheGroup===t&&as(i.request,e));if(i)return i.age++,Promise.resolve(i.sourceRef.source.ref());const r=this._sourceCachePromises.find(i=>i.cacheGroup===t&&as(i.request,e));if(r)return r.promise.then(e=>e.sourceRef.source.ref());const a=(async()=>{const i=await this._getSourceUncached(e);if(ye(this._sourceCache,e=>e.cacheGroup===t&&1===e.sourceRef.source._refCount)>=4){const e=be(this._sourceCache,e=>e.cacheGroup===t&&1===e.sourceRef.source._refCount?e.age:1/0);l(-1!==e);const i=this._sourceCache[e];this._sourceCache.splice(e,1),i.sourceRef.free(),N(this._sourceRefs,i.sourceRef)}this._sourceRefs.push(i);const r=this._sourceCachePromises.findIndex(t=>t.request===e);l(-1!==r),this._sourceCachePromises.splice(r,1);return{request:e,sourceRef:i,age:this._nextSourceCacheAge++,cacheGroup:t}})();return this._sourceCachePromises.push({request:e,cacheGroup:t,promise:a}),a.then(e=>{const t=e.sourceRef.source.ref();return this._sourceCache.push(e),t})}_getDemuxer(){return this._demuxerPromise??(this._demuxerPromise=(async()=>{this._reader=new yo(this._rootSource),this._emit("source",{source:this._rootSource,request:null,isRoot:!0});for(const e of this._formats){if(await e._canReadInput(this))return this._format=e,this._onFormatDetermined?.(e),e._createDemuxer(this)}throw new go})())}get source(){return this._rootSource}async getFormat(){return await this._getDemuxer(),l(this._format),this._format}async canRead(){try{return await this._getDemuxer(),!0}catch(e){if(e instanceof go)return!1;throw e}}async getFirstTimestamp(e){e??(e=await this.getTracks());const t=e.filter(e=>null!==e);if(0===t.length)return 0;const i=await Promise.all(t.map(e=>e._backing.getFirstPacket({metadataOnly:!0}))),r=Math.min(...i.map(e=>e?.timestamp??1/0));return r===1/0?0:r}async computeDuration(e,t){e??(e=await this.getTracks());const i=e.filter(e=>null!==e);if(0===i.length)return 0;const r=await Promise.all(i.map(e=>e.computeDuration(t)));return Math.max(...r)}async getDurationFromMetadata(e,t){e??(e=await this.getTracks());const i=e.filter(e=>null!==e),r=(await Promise.all(i.map(e=>e.getDurationFromMetadata(t)))).filter(e=>null!==e);return 0===r.length?null:Math.max(...r)}async getTracks(e){e&&(e=oo(e));const t=(await this._getTrackBackings()).map(e=>this._wrapBackingAsTrack(e));return lo(t,e)}async getVideoTracks(e){e&&(e=oo(e));const t=(await this.getTracks()).filter(e=>e.isVideoTrack());return lo(t,e)}async getAudioTracks(e){e&&(e=oo(e));const t=(await this.getTracks()).filter(e=>e.isAudioTrack());return lo(t,e)}async getPrimaryVideoTrack(e){e&&(e=oo(e));const t=co(e,{sortBy:async e=>[no((await e.getDisposition()).default),no(await e.hasPairableAudioTrack()),no(!(await e.hasOnlyKeyPackets())),so(await e.getBitrate())]});return(await this.getVideoTracks(t))[0]??null}async getPrimaryAudioTrack(e){e&&(e=oo(e));const t=await this.getPrimaryVideoTrack(),i=co(e,{sortBy:async e=>[no(!t||e.canBePairedWith(t)),no((await e.getDisposition()).default),so(await e.getBitrate())]});return(await this.getAudioTracks(i))[0]??null}async _getTrackBackings(){const e=await this._getDemuxer();return this._trackBackingsCache??(this._trackBackingsCache=await e.getTrackBackings())}_wrapBackingAsTrack(e){const t=this._backingToTrack.get(e);if(t)return t;const i="video"===e.getType()?new ro(this,e):new ao(this,e);return this._backingToTrack.set(e,i),i}async getMimeType(){return(await this._getDemuxer()).getMimeType()}async getMetadataTags(){return(await this._getDemuxer()).getMetadataTags()}dispose(){if(!this._disposed){this._disposed=!0;for(const e of this._sourceRefs)e.free();this._sourceRefs.length=0,this._demuxerPromise&&this._demuxerPromise.then(e=>e.dispose()).catch(()=>{})}}[Symbol.dispose](){this.dispose()}}class go extends Error{constructor(e="Input has an unsupported or unrecognizable format."){super(e),this.name="UnsupportedInputFormatError"}}class ko extends Error{constructor(e="Input has been disposed."){super(e),this.name="InputDisposedError"}}class yo{constructor(e){this.source=e}get fileSize(){const e=this.source._getFileSize();if(void 0===e)throw new Error("Reading file size too early; read required first.");return e}get fileSizeNonStrict(){return this.source._getFileSize()??null}requestSlice(e,t){if(this.source._disposed)throw new ko;if(e<0)return null;if(null!==this.fileSizeNonStrict&&e+t>this.fileSizeNonStrict)return null;if(0===t){const t=new Uint8Array(0);return new bo(t,g(t),0,e,e)}const i=e+t,r=this.source._read(e,i,0,es);return de(r)?r.then(t=>t?new bo(t.bytes,t.view,t.offset,e,i):null):r?new bo(r.bytes,r.view,r.offset,e,i):null}requestSliceRange(e,t,i){if(this.source._disposed)throw new ko;if(e<0)return null;if(null!==this.fileSizeNonStrict)return this.requestSlice(e,H(this.fileSizeNonStrict-e,t,i));{const r=this.requestSlice(e,i),a=r=>r||(l(null!==this.fileSizeNonStrict),this.requestSlice(e,H(this.fileSizeNonStrict-e,t,i)));return de(r)?r.then(a):a(r)}}requestEntireFile(){if(null!==this.fileSizeNonStrict)return this.requestSlice(0,this.fileSizeNonStrict);return(async()=>{const e=[];let t=0;for(;;){if(1===e.length&&null!==this.fileSizeNonStrict)return this.requestSlice(0,this.fileSizeNonStrict);let i=this.requestSliceRange(t,0,1024);if(de(i)&&(i=await i),!i||0===i.length)break;const r=To(i,i.length);e.push(r),t+=i.length}const i=new Uint8Array(t);let r=0;for(const a of e)i.set(a,r),r+=a.length;return new bo(i,g(i),0,0,t)})()}}class bo{constructor(e,t,i,r,a){this.bytes=e,this.view=t,this.offset=i,this.start=r,this.end=a,this.bufferPos=r-i}static tempFromBytes(e){return new bo(e,g(e),0,0,e.length)}get length(){return this.end-this.start}get filePos(){return this.offset+this.bufferPos}set filePos(e){this.bufferPos=e-this.offset}get remainingLength(){return Math.max(this.end-this.filePos,0)}skip(e){this.bufferPos+=e}slice(e,t=this.end-e){if(ethis.end)throw new RangeError("Slicing outside of original slice.");return new bo(this.bytes,this.view,this.offset,e,e+t)}}const wo=(e,t)=>{if(e.filePose.end)throw new RangeError(`Tried reading [${e.filePos}, ${e.filePos+t}), but slice is [${e.start}, ${e.end}). This is likely an internal error, please report it alongside the file that caused it.`)},To=(e,t)=>{wo(e,t);const i=e.bytes.subarray(e.bufferPos,e.bufferPos+t);return e.bufferPos+=t,i},So=e=>(wo(e,1),e.view.getUint8(e.bufferPos++)),vo=(e,t)=>{wo(e,2);const i=e.view.getUint16(e.bufferPos,t);return e.bufferPos+=2,i},Po=e=>{wo(e,2);const t=e.view.getUint16(e.bufferPos,!1);return e.bufferPos+=2,t},Io=e=>{wo(e,3);const t=U(e.view,e.bufferPos,!1);return e.bufferPos+=3,t},xo=e=>{wo(e,2);const t=e.view.getInt16(e.bufferPos,!1);return e.bufferPos+=2,t},Co=(e,t)=>{wo(e,4);const i=e.view.getUint32(e.bufferPos,t);return e.bufferPos+=4,i},Bo=e=>{wo(e,4);const t=e.view.getUint32(e.bufferPos,!1);return e.bufferPos+=4,t},Eo=e=>{wo(e,4);const t=e.view.getUint32(e.bufferPos,!0);return e.bufferPos+=4,t},_o=e=>{wo(e,4);const t=e.view.getInt32(e.bufferPos,!1);return e.bufferPos+=4,t},Ro=(e,t)=>{let i,r;return t?(i=Co(e,!0),r=Co(e,!0)):(r=Co(e,!1),i=Co(e,!1)),4294967296*r+i},Fo=e=>4294967296*Bo(e)+Bo(e),Ao=e=>4294967296*_o(e)+Bo(e),Do=e=>{const t=Eo(e),i=(e=>{wo(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*i+t},Mo=e=>{wo(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},No=e=>{wo(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},Oo=(e,t)=>{wo(e,t);let i="";for(let r=0;rk.decode(To(e,t)).split("\n").map(e=>e.trim()).filter(e=>e.length>0&&!i?.ignore?.(e));var zo,Uo,qo,Wo;(Uo=zo||(zo={}))[Uo.Unsynchronisation=128]="Unsynchronisation",Uo[Uo.ExtendedHeader=64]="ExtendedHeader",Uo[Uo.ExperimentalIndicator=32]="ExperimentalIndicator",Uo[Uo.Footer=16]="Footer",(Wo=qo||(qo={}))[Wo.ISO_8859_1=0]="ISO_8859_1",Wo[Wo.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",Wo[Wo.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",Wo[Wo.UTF_8=3]="UTF_8";const Ho=128,Vo=10,jo=["Blues","Classic rock","Country","Dance","Disco","Funk","Grunge","Hip-hop","Jazz","Metal","New age","Oldies","Other","Pop","Rhythm and blues","Rap","Reggae","Rock","Techno","Industrial","Alternative","Ska","Death metal","Pranks","Soundtrack","Euro-techno","Ambient","Trip-hop","Vocal","Jazz & funk","Fusion","Trance","Classical","Instrumental","Acid","House","Game","Sound clip","Gospel","Noise","Alternative rock","Bass","Soul","Punk","Space","Meditative","Instrumental pop","Instrumental rock","Ethnic","Gothic","Darkwave","Techno-industrial","Electronic","Pop-folk","Eurodance","Dream","Southern rock","Comedy","Cult","Gangsta","Top 40","Christian rap","Pop/funk","Jungle music","Native US","Cabaret","New wave","Psychedelic","Rave","Showtunes","Trailer","Lo-fi","Tribal","Acid punk","Acid jazz","Polka","Retro","Musical","Rock 'n' roll","Hard rock","Folk","Folk rock","National folk","Swing","Fast fusion","Bebop","Latin","Revival","Celtic","Bluegrass","Avantgarde","Gothic rock","Progressive rock","Psychedelic rock","Symphonic rock","Slow rock","Big band","Chorus","Easy listening","Acoustic","Humour","Speech","Chanson","Opera","Chamber music","Sonata","Symphony","Booty bass","Primus","Porn groove","Satire","Slow jam","Club","Tango","Samba","Folklore","Ballad","Power ballad","Rhythmic Soul","Freestyle","Duet","Punk rock","Drum solo","A cappella","Euro-house","Dance hall","Goa music","Drum & bass","Club-house","Hardcore techno","Terror","Indie","Britpop","Negerpunk","Polsk punk","Beat","Christian gangsta rap","Heavy metal","Black metal","Crossover","Contemporary Christian","Christian rock","Merengue","Salsa","Thrash metal","Anime","Jpop","Synthpop","Christmas","Art rock","Baroque","Bhangra","Big beat","Breakbeat","Chillout","Downtempo","Dub","EBM","Eclectic","Electro","Electroclash","Emo","Experimental","Garage","Global","IDM","Illbient","Industro-Goth","Jam Band","Krautrock","Leftfield","Lounge","Math rock","New romantic","Nu-breakz","Post-punk","Post-rock","Psytrance","Shoegaze","Space rock","Trop rock","World music","Neoclassical","Audiobook","Audio theatre","Neue Deutsche Welle","Podcast","Indie rock","G-Funk","Dubstep","Garage rock","Psybient"],Ko=(e,t)=>{var i;const r=e.filePos;t.raw??(t.raw={}),(i=t.raw).TAG??(i.TAG=To(e,Ho-3)),e.filePos=r;const a=Xo(e,30);a&&(t.title??(t.title=a));const s=Xo(e,30);s&&(t.artist??(t.artist=s));const n=Xo(e,30);n&&(t.album??(t.album=n));const o=Xo(e,4),c=Number.parseInt(o,10);Number.isInteger(c)&&c>0&&(t.date??(t.date=new Date(String(c))));const l=To(e,30);let u;if(0===l[28]&&0!==l[29]){const i=l[29];i>0&&(t.trackNumber??(t.trackNumber=i)),e.skip(-30),u=Xo(e,28),e.skip(2)}else e.skip(-30),u=Xo(e,30);u&&(t.comment??(t.comment=u));const d=So(e);d{const i=To(e,t),r=he(i.indexOf(0),i.length),a=i.subarray(0,r);let s="";for(let n=0;n{const t=e.filePos,i=Oo(e,3),r=So(e),a=So(e),s=So(e),n=Bo(e);if("ID3"!==i||255===r||255===a||0!==(2155905152&n))return e.filePos=t,null;let o=gi(n);return s&zo.Footer&&(o+=Vo),{majorVersion:r,revision:a,flags:s,size:o}},Go=(e,t,i)=>{var r,a,s,n,o;if(![2,3,4].includes(t.majorVersion))return void xe._warn(`Unsupported ID3v2 major version: ${t.majorVersion}`);const c=t.flags&zo.Footer?t.size-Vo:t.size,l=To(e,c),u=new Qo(t,l);if(t.flags&zo.Unsynchronisation&&3===t.majorVersion&&u.ununsynchronizeAll(),t.flags&zo.ExtendedHeader){const e=u.readU32();3===t.majorVersion?u.pos+=e:u.pos+=e-4}for(;u.pos<=u.bytes.length-u.frameHeaderSize();){const e=u.readId3V2Frame();if(!e)break;const c=u.pos,l=u.pos+e.size;let d=!1,h=!1,f=!1;if(3===t.majorVersion?(d=!!(64&e.flags),h=!!(128&e.flags)):4===t.majorVersion&&(d=!!(4&e.flags),h=!!(8&e.flags),f=!!(2&e.flags)||!!(t.flags&zo.Unsynchronisation)),d)xe._warn(`Skipping encrypted ID3v2 frame ${e.id}`),u.pos=l;else if(h)xe._warn(`Skipping compressed ID3v2 frame ${e.id}`),u.pos=l;else{if(f&&u.ununsynchronizeRegion(u.pos,l),i.raw??(i.raw={}),"TXXX"===e.id){const e=(r=i.raw).TXXX??(r.TXXX={}),t=u.readId3V2TextEncoding(),a=u.readId3V2Text(t,l),s=u.readId3V2Text(t,l);e[a]??(e[a]=s)}else"T"===e.id[0]?(a=i.raw)[s=e.id]??(a[s]=u.readId3V2EncodingAndText(l)):(n=i.raw)[o=e.id]??(n[o]=u.readBytes(e.size));switch(u.pos=c,e.id){case"TIT2":case"TT2":i.title??(i.title=u.readId3V2EncodingAndText(l));break;case"TIT3":case"TT3":i.description??(i.description=u.readId3V2EncodingAndText(l));break;case"TPE1":case"TP1":i.artist??(i.artist=u.readId3V2EncodingAndText(l));break;case"TALB":case"TAL":i.album??(i.album=u.readId3V2EncodingAndText(l));break;case"TPE2":case"TP2":i.albumArtist??(i.albumArtist=u.readId3V2EncodingAndText(l));break;case"TRCK":case"TRK":{const e=u.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(i.trackNumber??(i.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&(i.tracksTotal??(i.tracksTotal=r))}break;case"TPOS":case"TPA":{const e=u.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(i.discNumber??(i.discNumber=t)),r&&Number.isInteger(r)&&r>0&&(i.discsTotal??(i.discsTotal=r))}break;case"TCON":case"TCO":{const e=u.readId3V2EncodingAndText(l);let t=/^\((\d+)\)/.exec(e);if(t){const e=Number.parseInt(t[1]);if(void 0!==jo[e]){i.genre??(i.genre=jo[e]);break}}if(t=/^\d+$/.exec(e),t){const e=Number.parseInt(t[0]);if(void 0!==jo[e]){i.genre??(i.genre=jo[e]);break}}i.genre??(i.genre=e)}break;case"TDRC":case"TDAT":{const e=u.readId3V2EncodingAndText(l),t=new Date(e);Number.isNaN(t.getTime())||(i.date??(i.date=t))}break;case"TYER":case"TYE":{const e=u.readId3V2EncodingAndText(l),t=Number.parseInt(e,10);Number.isInteger(t)&&(i.date??(i.date=new Date(String(t))))}break;case"USLT":case"ULT":{const e=u.readU8();u.pos+=3,u.readId3V2Text(e,l),i.lyrics??(i.lyrics=u.readId3V2Text(e,l))}break;case"COMM":case"COM":{const e=u.readU8();u.pos+=3,u.readId3V2Text(e,l),i.comment??(i.comment=u.readId3V2Text(e,l))}break;case"APIC":case"PIC":{const e=u.readId3V2TextEncoding();let r;if(2===t.majorVersion){const e=u.readAscii(3);r="PNG"===e?"image/png":"JPG"===e?"image/jpeg":"image/*"}else r=u.readId3V2Text(e,l);const a=u.readU8(),s=u.readId3V2Text(e,l).trimEnd(),n=l-u.pos;if(n>=0){const e=u.readBytes(n);i.images||(i.images=[]),i.images.push({data:e,mimeType:r,kind:3===a?"coverFront":4===a?"coverBack":"unknown",description:s})}}break;default:u.pos+=e.size}u.pos=l}}};class Qo{constructor(e,t){this.header=e,this.bytes=t,this.pos=0,this.view=new DataView(t.buffer,t.byteOffset,t.byteLength)}frameHeaderSize(){return 2===this.header.majorVersion?6:10}ununsynchronizeAll(){const e=[];for(let t=0;t{const t=this.pos+e;if(t>this.bytes.length)return!1;if(t<=this.bytes.length-this.frameHeaderSize()){this.pos+=e;const t=this.readAscii(4);if("\0\0\0\0"!==t&&!/[0-9A-Z]{4}/.test(t))return!1}return!0};if(!s(i)){const e=4===this.header.majorVersion?t:gi(t);s(e)&&(i=e)}return this.pos=a,{id:e,size:i,flags:r}}}readId3V2TextEncoding(){const e=this.readU8();if(e>3)throw new Error(`Unsupported text encoding: ${e}`);return e}readId3V2Text(e,t){const i=this.pos,r=this.readBytes(t-this.pos);switch(e){case qo.ISO_8859_1:{let e="";for(let t=0;t0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}if(254===r[0]&&255===r[1]){const e=new TextDecoder("utf-16be"),t=he(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}{const e=he(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),k.decode(r.subarray(0,e))}case qo.UTF_16_BE_NO_BOM:{const e=new TextDecoder("utf-16be"),t=he(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(0,t))}case qo.UTF_8:{const e=he(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),k.decode(r.subarray(0,e))}}}readId3V2EncodingAndText(e){if(this.pos>=e)return"";const t=this.readId3V2TextEncoding();return this.readId3V2Text(t,e)}}class Yo{constructor(e){this.events=e,this.input=null,this.audioSink=null,this.audioIterator=null,this.audioContext=null,this.gainNode=null,this.audioContextStartTime=0,this.playbackTimeAtStart=0,this.latestScheduledEndTime=0,this.duration=Number.NaN,this.paused=!0,this.volume=.7,this.muted=!1,this.playbackRate=1,this.asyncId=0,this.queuedNodes=new Set}get currentTime(){return this.paused?this.playbackTimeAtStart:(this.audioContext.currentTime-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart}ensureAudioContext(e){if(this.audioContext)return;const t=window.AudioContext||window.webkitAudioContext;try{this.audioContext=new t({sampleRate:e})}catch{this.audioContext=new t}this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination),this.updateGain()}updateGain(){if(!this.gainNode)return;const e=this.muted?0:this.volume;this.gainNode.gain.value=e*e}stopQueuedNodes(){this.queuedNodes.forEach(e=>e.stop()),this.queuedNodes.clear()}async stopIterator(){await(this.audioIterator?.return()),this.audioIterator=null}handleNoAudioTrack(){this.audioSink=null,this.ensureAudioContext()}async load(e,t){++this.asyncId,await this.stopIterator(),this.stopQueuedNodes(),this.paused=!0,this.playbackTimeAtStart=0,this.audioContextStartTime=0;const{input:i,audioTrack:r,duration:a}=e;return this.input=i,this.duration=a,r?null!==r.codec&&await r.canDecode()?(this.ensureAudioContext(r.sampleRate),this.audioSink=new Zn(r),void t?.()):(this.audioSink=null,this.ensureAudioContext(),void t?.()):(this.handleNoAudioTrack(),void t?.())}async runIterator(e){if(!this.audioSink)return;await this.stopIterator(),this.audioIterator=this.audioSink.buffers(this.currentTime);for(;;){if(e!==this.asyncId||this.paused)return;const i=[];let r=!1;try{for(let e=0;e<16;e++){const e=await this.audioIterator.next();if(e.done){r=!0;break}i.push(e.value)}}catch(t){console.error("Audio iterator error:",t),r=!0}if(e!==this.asyncId||this.paused)return;i.length>0&&"suspended"===this.audioContext.state&&(await this.audioContext.resume(),this.events.emit("canplay"),this.events.emit("playing"));for(const{buffer:e,timestamp:t}of i){const i=this.audioContext.createBufferSource();i.buffer=e,i.connect(this.gainNode),i.playbackRate.value=this.playbackRate;const r=this.audioContextStartTime+(t-this.playbackTimeAtStart)/this.playbackRate,a=(r+e.duration/this.playbackRate-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart;a>this.latestScheduledEndTime&&(this.latestScheduledEndTime=a),r>=this.audioContext.currentTime?i.start(r):i.start(this.audioContext.currentTime,(this.audioContext.currentTime-r)*this.playbackRate),this.queuedNodes.add(i),i.onended=()=>this.queuedNodes.delete(i)}if(r)break;await new Promise(e=>setTimeout(e,0));const a=1;for(;this.latestScheduledEndTime-this.currentTime>a;){if(e!==this.asyncId||this.paused)return;await new Promise(e=>setTimeout(e,50))}}}async play(){if(!this.paused)return;this.audioContext||this.ensureAudioContext(),"suspended"===this.audioContext.state&&await this.audioContext.resume(),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart,this.paused=!1;const e=++this.asyncId;this.runIterator(e)}pause(){this.paused||(this.playbackTimeAtStart=this.currentTime,this.paused=!0,this.stopIterator(),this.stopQueuedNodes())}async seek(e){this.playbackTimeAtStart=Math.max(0,e),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart;const t=++this.asyncId;this.paused||this.runIterator(t)}setVolume(e,t){this.volume=e,this.muted=t,this.updateGain()}setPlaybackRate(e){if(e!==this.playbackRate&&(this.paused||(this.playbackTimeAtStart=this.currentTime,this.audioContextStartTime=this.audioContext.currentTime),this.playbackRate=e,!this.paused)){const e=++this.asyncId;this.runIterator(e)}}destroy(){this.asyncId++,this.pause(),this.audioContext?.close(),this.audioContext=null,this.input=null,this.audioSink=null}}async function Jo(e){return await e.getAverageBitrate()??await e.getBitrate()??0}const Zo=/\.m3u8(?:$|[?#])/i;function ec(e){return"string"===typeof e&&Zo.test(e)}function tc(e){const t=function(e){return"string"===typeof e?new us(e):e instanceof Blob?new os(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new fs(e):e??null}(e);return t?new po({source:t,formats:ec(e)?en:Zs}):null}class ic{constructor(){this.active=!0,this.input=null,this.timers=new Set,this.controller="undefined"===typeof AbortController?void 0:new AbortController,this.cancellation=new Promise(e=>{this.resolveCancellation=e})}get signal(){return this.controller?.signal}own(e){this.active?this.input=e:e.dispose()}defer(e){if(!this.active)return;const t=setTimeout(()=>{this.timers.delete(t),this.active&&e()},0);this.timers.add(t)}async wait(e,t){try{await Promise.race([e,this.cancellation,t>0?this.timeout(t):new Promise(()=>{})])}finally{void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0)}}timeout(e){return new Promise((t,i)=>{this.deadline=setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){const e=this.input;this.input=null,e?.dispose()}cancel(){if(this.active){this.active=!1;for(const e of this.timers)clearTimeout(e);this.timers.clear(),void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0),this.resolveCancellation(),this.controller?.abort(),this.disposeInput()}}}function rc(e,t,i){for(const r of i){if(!t())return;e.emit(r)}}async function ac({input:e,videoTrack:t,audioTrack:i}){const r=[t,i].filter(e=>null!==e),a=t||i,s=Boolean(a&&await a.isLive());let n=Number.NaN;return r.length>0&&(n=await e.getDurationFromMetadata(r,{skipLiveWait:!0}),null!==n||s||(n=await e.computeDuration(r,{skipLiveWait:!0}))),s?Number.POSITIVE_INFINITY:n??Number.NaN}function sc(){let e,t;return{promise:new Promise((i,r)=>{e=i,t=r}),resolve:e,reject:t}}class nc{constructor(e){this.host=e,this.wanted=!1,this.playing=null,this.seeking=null,this.audioStart=null}operation(){return{...sc(),source:this.host.loadSeq,complete:sc()}}current(e,t){return!this.host.destroyed&&e.source===this.host.loadSeq&&this[t]===e}cancelPlay(){const e=this.playing;this.playing=null,e?.resolve()}invalidate(){this.cancelPlay(),this.wanted=!1;const e=this.seeking;this.seeking=null,e?.complete.resolve(),e?.resolve(),this.host.seeking=!1}ended(){this.wanted=!1,this.cancelPlay()}stop(){this.host.paused||(this.host.paused=!0,this.stopEngines(),this.host.events.emit("pause"))}stopEngines(){const e=[];for(const i of[()=>this.host.audio.pause(),()=>this.host.video.stop()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}pause(){this.wanted=!1,this.cancelPlay(),this.stop()}play(){if(this.host.destroyed)return Promise.resolve();if(this.wanted=!0,this.playing)return this.playing.promise;if(this.host.ended)return this.seek(0,!0);if(!this.host.paused&&!this.seeking)return Promise.resolve();const e=this.operation();return this.playing=e,this.runPlay(e).then(e.resolve,e.reject),e.promise}async startAudio(){this.audioStart||(this.audioStart=this.host.audio.play());const e=this.audioStart;try{await e}finally{this.audioStart===e&&(this.audioStart=null)}}async runPlay(e){const t=()=>this.current(e,"playing")&&this.wanted;try{for(;this.seeking;)if(await this.seeking.complete.promise,!t())return;if(!t())return;if(this.host.paused=!1,await this.startAudio(),!t())return void(this.wanted&&!this.host.destroyed||this.host.audio.pause());this.host.video.start(this.host.audio),rc(this.host.events,t,["play","playing"])}catch(i){if(!t())return;this.wanted=!1,this.host.paused=!0;try{this.stopEngines()}catch(r){console.warn("MediaBunny play cleanup error:",r)}throw i}finally{this.playing===e&&(this.playing=null)}}seek(e,t){return this.position(async t=>{const i=this.host.audio.seek(e),r=t()?this.host.video.seek(e):Promise.resolve();await Promise.all([i,r])},["seeked"],!1,t)}replace(e,t){return this.position(async i=>{e.duration=await ac(e),i()&&(this.host.media=e,await Promise.all([this.host.video.load(e),this.host.audio.load(e)]),i()&&(await Promise.all([this.host.video.seek(t),this.host.audio.seek(t)]),i()&&(this.host.readyState=4,this.host.networkState=1)))},["loadedmetadata","durationchange","progress","loadeddata","canplay","canplaythrough","seeked"],!0)}position(e,t,i,r){if(this.host.destroyed)return Promise.resolve();this.wanted=r??(this.seeking?this.wanted:!this.host.paused),this.cancelPlay();const a=this.seeking,s=this.operation();return this.seeking=s,a?.complete.resolve(),a?.resolve(),this.runPosition(s,e,t,i).then(s.resolve,s.reject),s.promise}async runPosition(e,t,i,r){const a=()=>this.current(e,"seeking");let s=!1;try{if(r&&this.stop(),!a())return;if(this.host.ended=!1,this.host.seeking=!0,rc(this.host.events,a,["seeking","waiting"]),!a())return;if(r||this.stop(),!a())return;if(await t(a),!a())return;if(this.host.seeking=!1,e.complete.resolve(),rc(this.host.events,a,i),!a())return;this.seeking=null,s=this.wanted}catch(n){if(!a())return;throw this.host.seeking=!1,this.wanted=!1,this.cancelPlay(),this.host.reportError(n),n}finally{e.complete.resolve(),this.seeking===e&&(this.seeking=null)}s&&await this.play()}}class oc{constructor({canvas:e,ctx:t,events:i,timeupdateInterval:r=250,avSyncTolerance:a=.12,dropLateFrames:s=!1,poster:n="",preflightRange:o=!1}){this.canvas=e,this.ctx=t,this.events=i,this.timeupdateInterval=r,this.avSyncTolerance=a,this.dropLateFrames=s,this.poster=n,this.preflightRange=o,this.input=null,this.videoSink=null,this.videoIterator=null,this.nextFrame=null,this.rafId=0,this.asyncId=0,this.width=0,this.height=0,this.duration=Number.NaN,this.audioClock=null,this.lastTimeUpdate=0,this.stalled=!1,this.playbackRate=1,this.posterDrawn=!1,this.isFetching=!1}async preflight(e,t,i){return async function(e,t,i,r,a=()=>!0){if(r?.aborted||!a())return!1;if(!t||"string"!==typeof e||ec(e))return!0;try{const t=await fetch(e,r?{method:"HEAD",signal:r}:{method:"HEAD"});if(r?.aborted||!a())return!1;const s=t.headers.get("accept-ranges");return!(!s||"none"===s)||(i.emit("error",new Event("RangeNotSupported")),!1)}catch(s){return!(r?.aborted||!a())&&(console.warn("Preflight check failed:",s),!0)}}(e,this.preflightRange,this.events,t,i)}drawPoster(){if(!this.poster||this.posterDrawn)return;const e=new Image;e.onload=()=>{this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,this.ctx.drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e.src=this.poster}async stopIterator(){await(this.videoIterator?.return()),this.videoIterator=null}clear(){this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height)}async load(e,t){++this.asyncId,await this.stopIterator(),this.clear(),this.posterDrawn=!1;const{input:i,videoTrack:r,duration:a}=e;if(this.input=i,this.duration=a,!r)return this.handleNoVideoTrack(),void t?.();if(null===r.codec||!(await r.canDecode()))return this.handleNoVideoTrack(),void t?.();const s=await r.canBeTransparent();this.videoSink=new Gn(r,{poolSize:2,fit:"contain",alpha:s}),this.width=r.displayWidth,this.height=r.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,t?.(),await this.resetIterator(0)}handleNoVideoTrack(){this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster()}async resetIterator(e){if(await this.stopIterator(),!this.videoSink)return;this.videoIterator=this.videoSink.canvases(e);const t=(await this.videoIterator.next()).value??null,i=(await this.videoIterator.next()).value??null;this.nextFrame=i,t?this.ctx.drawImage(t.canvas,0,0):this.drawPoster()}async updateNextFrame(e){if(this.videoIterator&&!this.isFetching){this.isFetching=!0;try{for(;;){const t=(await this.videoIterator.next()).value??null;if(!t||e!==this.asyncId)return;const i=this.audioClock.currentTime,r=this.dropLateFrames?Math.max(.06,this.avSyncTolerance/Math.max(1,this.playbackRate)):0;if(!(this.dropLateFrames&&t.timestampi)return void(this.nextFrame=null)}}}finally{this.isFetching=!1}}}render(){if(!this.audioClock)return;const e=this.audioClock.currentTime,t=Date.now();if(t-this.lastTimeUpdate>=this.timeupdateInterval&&(this.events.emit("timeupdate"),this.lastTimeUpdate=t),Number.isFinite(this.duration)&&e>=this.duration)return this.stop(),this.stalled=!1,this.events.emit("ended"),this.events.emit("pause"),void this.events.emit("canplay");this.nextFrame&&this.nextFrame.timestamp<=e?(this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.ctx.drawImage(this.nextFrame.canvas,0,0),this.nextFrame=null,this.updateNextFrame(this.asyncId),this.stalled&&(this.events.emit("canplay"),this.events.emit("playing"),this.stalled=!1)):this.nextFrame||(this.updateNextFrame(this.asyncId),!this.nextFrame&&Number.isFinite(this.duration)&&ethis.render())}start(e){this.audioClock=e,this.asyncId++,this.stalled=!1,this.updateNextFrame(this.asyncId),this.rafId=requestAnimationFrame(()=>this.render())}stop(){cancelAnimationFrame(this.rafId)}async seek(e){this.asyncId++,await this.resetIterator(e)}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){this.asyncId++,this.stop(),this.stopIterator(),this.posterDrawn=!1,this.videoSink=null,this.input=null}}class cc{constructor({canvas:e,ctx:i,events:r,option:o={}}){s(this,t),this.events=r,this.option=o,this.audio=new Yo(r),this.video=new oc({canvas:e,ctx:i,events:r,timeupdateInterval:o.timeupdateInterval??250,avSyncTolerance:o.avSyncTolerance??.12,dropLateFrames:o.dropLateFrames??!1,poster:o.poster??"",preflightRange:o.preflightRange??!1}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,this.input=null,this.media=null,this.loadSession=null,this.destroyed=!1,n(this,t,new nc(this)),r.addEventListener("ended",()=>{this.destroyed||(this.ended=!0,this.paused=!0,a(this,t).ended())})}async load(e){if(this.destroyed)return;const i=++this.loadSeq;if(a(this,t).invalidate(),this.loadSession?.cancel(),i!==this.loadSeq||this.destroyed)return;if(this.pause(),i!==this.loadSeq||this.destroyed)return;this.disposeInput();const r=new ic;this.loadSession=r,this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,r.defer(()=>this.events.emit("waiting")),r.defer(()=>this.events.emit("loadstart"));const s=Number.isFinite(this.option.loadTimeout)?this.option.loadTimeout??0:0;try{await r.wait(this.performLoad(e,i,r),s)}catch(n){if(i!==this.loadSeq)return;const e=++this.loadSeq;if(a(this,t).invalidate(),r.cancel(),e!==this.loadSeq||this.destroyed)return;this.disposeInput(),this.reportError(n)}}async performLoad(e,t,i=this.loadSession){const r=()=>!this.destroyed&&t===this.loadSeq;if(!i||!(await this.video.preflight(e,i.signal,r))||!r())return;const a=tc(e);if(!a)return this.video.handleNoVideoTrack(),void(r()&&this.audio.handleNoAudioTrack());i.own(a);const s=await async function(e,t){const i=await e.getPrimaryVideoTrack(),r=i?await i.getPrimaryPairableAudioTrack():await e.getPrimaryAudioTrack(),a=await ac({input:e,videoTrack:i,audioTrack:r}),s=i||r,n=ec(t);return{input:e,videoTrack:i,audioTrack:r,duration:a,isLive:!Number.isFinite(a)&&Boolean(s&&await s.isLive()),isHls:n,videoMode:n?"auto":"manual",audioMode:n?"auto":"manual"}}(a,e);if(!r())return;if(!s.videoTrack&&!s.audioTrack)throw this.video.handleNoVideoTrack(),this.video.duration=Number.NaN,this.audio.duration=Number.NaN,new Error("Input has no audio or video tracks.");this.input=a,this.media=s;const n=function(e,t){let i=!1,r=!1,a=!1;function s(s){t()&&!a&&("video"===s?i=!0:r=!0,i&&r&&(a=!0,e()))}return{video:()=>s("video"),audio:()=>s("audio")}}(()=>{this.readyState=1,rc(this.events,r,["loadedmetadata","durationchange","progress"])},r);try{const e=this.video.load(s,n.video),t=r()?this.audio.load(s,n.audio):Promise.resolve();if(await Promise.all([e,t]),!r())return;this.readyState=4,this.networkState=1,rc(this.events,r,["loadeddata","canplay","canplaythrough","progress"])}catch(o){if(!r())return;throw console.error("MediaBunny load error:",o),o}}createTimeout(e){return new Promise((t,i)=>{setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){this.loadSession?.disposeInput(),this.input=null,this.media=null}async replaceTracks(e){if(this.media&&!this.destroyed)return a(this,t).replace({...this.media,...e},this.currentTime)}async selectHlsQuality(e){return async function(e,t){const{input:i,media:r,loadSeq:a}=e;if(!r?.isHls||!i||e.destroyed)return;const s=()=>!e.destroyed&&e.loadSeq===a&&e.input===i&&e.media===r;let n;try{const e=await i.getVideoTracks();if(!s())return;const a="auto"===t?await i.getPrimaryVideoTrack():e.find(e=>e.id===t)??r.videoTrack;if(!s()||!a)return;let o=r.audioTrack,c=r.audioMode;o&&a.canBePairedWith(o)||(o=await a.getPrimaryPairableAudioTrack(),c="auto"),n={videoTrack:a,audioTrack:o,videoMode:"auto"===t?"auto":"manual",audioMode:c}}catch(o){if(!s())return;throw o}s()&&await e.replaceTracks(n)}(this,e)}async selectHlsAudio(e){return async function(e,t){const{input:i,media:r,loadSeq:a}=e;if(!r?.isHls||!i||e.destroyed)return;const s=()=>!e.destroyed&&e.loadSeq===a&&e.input===i&&e.media===r;let n;try{const e=await i.getAudioTracks();if(!s())return;const a="auto"===t?r.videoTrack?await 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t=o.profile,i=o.level.toString().padStart(2,"0"),a=o.tier?"H":"M",s=o.bitDepth.toString().padStart(2,"0"),n=o.monochrome?"1":"0",c=100*o.chromaSubsamplingX+10*o.chromaSubsamplingY+1*(o.chromaSubsamplingX&&o.chromaSubsamplingY?o.chromaSamplePosition:0),l=r?.primaries?L[r.primaries]:1,u=r?.transfer?q[r.transfer]:1,d=r?.matrix?H[r.matrix]:1,h=r?.fullRange?1:0;let f=`av01.${t}.${i}${a}.${s}`;return f+=`.${n}.${c.toString().padStart(3,"0")}`,f+=`.${l.toString().padStart(2,"0")}`,f+=`.${u.toString().padStart(2,"0")}`,f+=`.${d.toString().padStart(2,"0")}`,f+=`.${h}`,f.endsWith(wi)&&(f=f.slice(0,-17)),f}if("prores"===t)return c??"apch";throw null!==t&&se(t),new TypeError(`Unhandled codec '${t}'.`)},Pi=e=>{switch(e.codec){case"avc":{let t=e.avcCodecInfo?.sequenceParameterSets[0];if(!t&&e.codecDescription&&(t=yt(e.codecDescription)?.sequenceParameterSets[0]),t){const e=wt(t);if(e)return{primaries:U[e.colourPrimaries],transfer:W[e.transferCharacteristics],matrix:V[e.matrixCoefficients],fullRange:!!e.fullRangeFlag}}}break;case"hevc":{let t=e.hevcCodecInfo?.arrays.find(e=>e.nalUnitType===nt.SPS_NUT)?.nalUnits[0];if(!t&&e.codecDescription&&(t=(e=>{try{const t=N(e);let i=0;const r=t.getUint8(i++),a=t.getUint8(i++),s=a>>6&3,n=a>>5&1,o=31&a,c=t.getUint32(i,!1);i+=4;const l=e.subarray(i,i+6);i+=6;const u=t.getUint8(i++),d=(15&t.getUint8(i++))<<8|t.getUint8(i++),h=3&t.getUint8(i++),f=3&t.getUint8(i++),m=7&t.getUint8(i++),p=7&t.getUint8(i++),g=t.getUint16(i,!1);i+=2;const k=t.getUint8(i++),y=k>>6&3,b=k>>3&7,w=k>>2&1,T=3&k,S=t.getUint8(i++),v=[];for(let P=0;P>7&1,s=63&r,n=t.getUint16(i,!1);i+=2;const o=[];for(let c=0;ce.nalUnitType===nt.SPS_NUT)?.nalUnits[0]),t){const e=It(t);if(e)return{primaries:U[e.colourPrimaries],transfer:W[e.transferCharacteristics],matrix:V[e.matrixCoefficients],fullRange:!!e.fullRangeFlag}}}break;case"vp8":break;case"vp9":if(e.vp9CodecInfo)return{primaries:U[e.vp9CodecInfo.colourPrimaries],transfer:W[e.vp9CodecInfo.transferCharacteristics],matrix:V[e.vp9CodecInfo.matrixCoefficients],fullRange:!!e.vp9CodecInfo.videoFullRangeFlag};break;case"av1":if(e.av1CodecInfo)return{primaries:U[e.av1CodecInfo.colourPrimaries],transfer:W[e.av1CodecInfo.transferCharacteristics],matrix:V[e.av1CodecInfo.matrixCoefficients],fullRange:!!e.av1CodecInfo.videoFullRangeFlag};break;case"prores":if(e.proresCodecInfo)return{primaries:U[e.proresCodecInfo.colourPrimaries],transfer:W[e.proresCodecInfo.transferCharacteristics],matrix:V[e.proresCodecInfo.matrixCoefficients],fullRange:e.proresCodecInfo.fullRange}}return{primaries:void 0,transfer:void 0,matrix:void 0,fullRange:void 0}},Ii=e=>{const{codec:t,codecDescription:i,aacCodecInfo:r,dtsFormat:a}=e;if("aac"===t){if(!r)throw new TypeError("AAC codec info must be provided.");if(r.isMpeg2)return"mp4a.67";{let e;if(null!==r.objectType)e=r.objectType;else{e=Ze(i).objectType}return`mp4a.40.${e}`}}if("mp3"===t)return"mp3";if("opus"===t)return"opus";if("vorbis"===t)return"vorbis";if("flac"===t)return"flac";if("ac3"===t)return"ac-3";if("eac3"===t)return"ec-3";if("dts"===t)return a??"dtsc";if(t&&pi.includes(t))return t;throw new TypeError(`Unhandled codec '${t}'.`)},xi=48e3,Ci=/^pcm-([usf])(\d+)(be)?$/,Bi=e=>{if(E(pi.includes(e)),"ulaw"===e)return{dataType:"ulaw",sampleSize:1,littleEndian:!0,silentValue:255};if("alaw"===e)return{dataType:"alaw",sampleSize:1,littleEndian:!0,silentValue:213};const t=Ci.exec(e);let i;E(t),i="u"===t[1]?"unsigned":"s"===t[1]?"signed":"float";return{dataType:i,sampleSize:Number(t[2])/8,littleEndian:"be"!==t[3],silentValue:"pcm-u8"===e?128:0}},Ei=e=>e.startsWith("avc1")||e.startsWith("avc3")?"avc":e.startsWith("hev1")||e.startsWith("hvc1")?"hevc":"vp8"===e?"vp8":e.startsWith("vp09")?"vp9":e.startsWith("av01")?"av1":Ti.includes(e)?"prores":"mp3"===e||"mp4a.69"===e||"mp4a.6B"===e||"mp4a.6b"===e||"mp4a.40.34"===e?"mp3":e.startsWith("mp4a.40.")||"mp4a.67"===e?"aac":"opus"===e?"opus":"vorbis"===e?"vorbis":"flac"===e?"flac":"ac-3"===e||"ac3"===e?"ac3":"ec-3"===e||"eac3"===e?"eac3":Si.includes(e)?"dts":"ulaw"===e?"ulaw":"alaw"===e?"alaw":Ci.test(e)?e:"webvtt"===e?"webvtt":null,_i=[44100,48e3,32e3],Ri=[-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,32,40,48,56,64,80,96,112,128,160,192,224,256,320,-1,-1,32,48,56,64,80,96,112,128,160,192,224,256,320,384,-1,-1,32,64,96,128,160,192,224,256,288,320,352,384,416,448,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,32,48,56,64,80,96,112,128,144,160,176,192,224,256,-1],Fi=1483304551,Ai=1231971951,Di=(e,t)=>3===e?3===t?21:36:3===t?13:21,Mi=(e,t)=>{const i=e>>>24,r=e>>>16&255,a=e>>>8&255,s=255&e;if(255!==i&&255!==r&&255!==a&&255!==s)return{header:null,bytesAdvanced:4};if(255!==i)return{header:null,bytesAdvanced:1};if(224!==(224&r))return{header:null,bytesAdvanced:1};let n=0,o=0;16&r?n=8&r?0:1:(n=1,o=1);const c=r>>3&3,l=r>>1&3,u=(a>>2&3)%3,d=s>>6&3,h=s>>4&3,f=s>>3&1,m=s>>2&1,p=3&s,g=Ri[16*n*4+16*l+(a>>4&15)];if(-1===g)return{header:null,bytesAdvanced:1};const k=1e3*g,y=_i[u]>>n+o,b=((e,t,i,r,a)=>0===t?0:1===t?Math.floor(144*i/(r<>1&1);if(null!==t&&t{let t=2130706432,i=0;for(;0!==t;)i>>=1,i|=e&t,t>>=8;return i};var Oi,zi;(zi=Oi||(Oi={}))[zi.FrameCount=1]="FrameCount",zi[zi.FileSize=2]="FileSize",zi[zi.Toc=4]="Toc";const Li=e=>3===e?1:2;class Ui{constructor(e){this.input=e}dispose(){}}const qi=new Uint8Array(0);class Wi{constructor(e,t,i,r,a=-1,s,n){if(this.data=e,this.type=t,this.timestamp=i,this.duration=r,this.sequenceNumber=a,e===qi&&void 0===s)throw new Error("Internal error: byteLength must be explicitly provided when constructing metadata-only packets.");if(void 0===s&&(s=e.byteLength),!(e instanceof Uint8Array))throw new TypeError("data must be a Uint8Array.");if("key"!==t&&"delta"!==t)throw new TypeError('type must be either "key" or "delta".');if(!Number.isFinite(i))throw new TypeError("timestamp must be a number.");if(!Number.isFinite(r)||r<0)throw new TypeError("duration must be a non-negative number.");if(!Number.isFinite(a))throw new TypeError("sequenceNumber must be a number.");if(!Number.isInteger(s)||s<0)throw new TypeError("byteLength must be a non-negative integer.");if(void 0!==n&&("object"!==typeof n||!n))throw new TypeError("sideData, when provided, must be an object.");if(void 0!==n?.alpha&&!(n.alpha instanceof Uint8Array))throw new TypeError("sideData.alpha, when provided, must be a Uint8Array.");if(void 0!==n?.alphaByteLength&&(!Number.isInteger(n.alphaByteLength)||n.alphaByteLength<0))throw new TypeError("sideData.alphaByteLength, when provided, must be a non-negative integer.");this.byteLength=s,this.sideData=n??{},this.sideData.alpha&&void 0===this.sideData.alphaByteLength&&(this.sideData.alphaByteLength=this.sideData.alpha.byteLength)}get isMetadataOnly(){return this.data===qi}get microsecondTimestamp(){return Math.trunc(ye*this.timestamp)}get microsecondDuration(){return Math.trunc(ye*this.duration)}toEncodedVideoChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("EncodedVideoChunk is not available in this environment.");return new EncodedVideoChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}alphaToEncodedVideoChunk(e=this.type){if(!this.sideData.alpha)throw new TypeError("This packet does not contain alpha side data.");if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("EncodedVideoChunk is not available in this environment.");return new EncodedVideoChunk({data:this.sideData.alpha,type:e,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}toEncodedAudioChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to an audio chunk.");if("undefined"===typeof EncodedAudioChunk)throw new Error("EncodedAudioChunk is not available in this environment.");return new EncodedAudioChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}static fromEncodedChunk(e,t){if(!(e instanceof EncodedVideoChunk||e instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedVideoChunk or EncodedAudioChunk.");const i=new Uint8Array(e.byteLength);return e.copyTo(i),new Wi(i,e.type,e.timestamp/1e6,(e.duration??0)/1e6,void 0,void 0,t)}clone(e){if(void 0!==e&&("object"!==typeof e||null===e))throw new TypeError("options, when provided, must be an object.");if(void 0!==e?.data&&!(e.data instanceof Uint8Array))throw new TypeError("options.data, when provided, must be a Uint8Array.");if(void 0!==e?.type&&"key"!==e.type&&"delta"!==e.type)throw new TypeError('options.type, when provided, must be either "key" or "delta".');if(void 0!==e?.timestamp&&!Number.isFinite(e.timestamp))throw new TypeError("options.timestamp, when provided, must be a number.");if(void 0!==e?.duration&&!Number.isFinite(e.duration))throw new TypeError("options.duration, when provided, must be a number.");if(void 0!==e?.sequenceNumber&&!Number.isFinite(e.sequenceNumber))throw new TypeError("options.sequenceNumber, when provided, must be a number.");if(void 0!==e?.sideData&&("object"!==typeof e.sideData||null===e.sideData))throw new TypeError("options.sideData, when provided, must be an object.");return new Wi(e?.data??this.data,e?.type??this.type,e?.timestamp??this.timestamp,e?.duration??this.duration,e?.sequenceNumber??this.sequenceNumber,this.byteLength,e?.sideData??this.sideData)}}const Hi=e=>{const t=N(e);let i=0;const r=t.getUint8(i);i+=1,i+=3;const a=Q(e.subarray(i,i+16));i+=16;let s=null;if(r>0){const r=t.getUint32(i);if(i+=4,r>0){s=[];for(let t=0;te.systemId===t.systemId&&((e,t)=>{if(e.length!==t.length)return!1;for(let i=0;i{let t=$o(e);const i=rc(e,4);let r=8;1===t&&(t=Jo(e),r=16);const a=t-r;return a<0?null:{name:i,totalSize:t,headerSize:r,contentSize:a}},Ki=e=>Qo(e)/65536,Xi=e=>Qo(e)/1073741824,$i=e=>{let t=0;for(let i=0;i<4;i++){t<<=7;const i=Wo(e);if(t|=127&i,0===(128&i))break}return t},Gi=e=>{let t=Vo(e);return e.skip(2),t=Math.min(t,e.remainingLength),O.decode(qo(e,t))},Qi=e=>{const t=ji(e);if(!t||"data"!==t.name)return null;if(e.remainingLength<8)return null;const i=$o(e);e.skip(4);const r=qo(e,t.contentSize-8);switch(i){case 1:return O.decode(r);case 2:return new TextDecoder("utf-16be").decode(r);case 13:return new Xe(r,"image/jpeg");case 14:return new Xe(r,"image/png");case 27:return new Xe(r,"image/bmp");default:return r}},Yi=16,Ji=new Uint32Array(256),Zi=new Uint32Array(256),er=new Uint32Array(256),tr=new Uint32Array(256),ir=new Uint32Array(256),rr=new Uint32Array(256),ar=new Uint32Array(10);let sr=!1;class nr{constructor(){this.roundkey=new Uint32Array(44),this.iv=new Uint32Array(Yi/Uint32Array.BYTES_PER_ELEMENT),this.in=new Uint8Array(Yi),this.out=new Uint8Array(Yi),this.inView=new DataView(this.in.buffer),this.outView=new DataView(this.out.buffer)}init({key:e,iv:t}){E(16===e.byteLength),E(16===t.byteLength),sr||(()=>{const e=new Uint8Array(256),t=new Uint8Array(256),i=new Uint8Array(256);for(let s=0,n=1;s<256;s++)i[s]=n,t[n]=s,n=n^n<<1^(128&n?283:0);const r=(e,r)=>e&&r?i[(t[e]+t[r])%255]:0;e[0]=99;for(let s=1;s<256;s++){const r=i[255-t[s]];let a=r^r<<1^r<<2^r<<3^r<<4;a=a>>>8^255&a^99,e[s]=a}for(let s=0;s<256;s++){const t=e[s],i=e.indexOf(s);Ji[s]=t<<24|t<<16|t<<8|t,rr[s]=i<<24|i<<16|i<<8|i;const a=r(i,14)<<24|r(i,9)<<16|r(i,13)<<8|r(i,11);Zi[s]=a,er[s]=a>>>8|a<<24,tr[s]=a>>>16|a<<16,ir[s]=a>>>24|a<<8}let a=1;for(let s=0;s<10;s++)ar[s]=a<<24,a=a<<1^(128&a?283:0);sr=!0})();const i=new DataView(e.buffer,e.byteOffset,e.byteLength),r=new DataView(t.buffer,t.byteOffset,t.byteLength);this.roundkey[0]=i.getUint32(0,!1),this.roundkey[1]=i.getUint32(4,!1),this.roundkey[2]=i.getUint32(8,!1),this.roundkey[3]=i.getUint32(12,!1),this.iv[0]=r.getUint32(0,!1),this.iv[1]=r.getUint32(4,!1),this.iv[2]=r.getUint32(8,!1),this.iv[3]=r.getUint32(12,!1);for(let a=4;a<44;a+=4){const e=this.roundkey[a-1];this.roundkey[a]=this.roundkey[a-4]^4278190080&Ji[e>>>16&255]^16711680&Ji[e>>>8&255]^65280&Ji[e>>>0&255]^255&Ji[e>>>24&255]^ar[a/4-1],this.roundkey[a+1]=this.roundkey[a-3]^this.roundkey[a],this.roundkey[a+2]=this.roundkey[a-2]^this.roundkey[a+1],this.roundkey[a+3]=this.roundkey[a-1]^this.roundkey[a+2]}for(let a=0,s=40;a>>24&255]]^er[255&Ji[t>>>16&255]]^tr[255&Ji[t>>>8&255]]^ir[255&Ji[t>>>0&255]]}}decrypt(){let e=this.inView.getUint32(0,!1)^this.roundkey[0],t=this.inView.getUint32(4,!1)^this.roundkey[1],i=this.inView.getUint32(8,!1)^this.roundkey[2],r=this.inView.getUint32(12,!1)^this.roundkey[3];const a=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),n=this.inView.getUint32(8,!1),o=this.inView.getUint32(12,!1);let c,l,u,d;for(let g=1;g<10;g++){const a=4*g;c=Zi[e>>>24]^er[r>>>16&255]^tr[i>>>8&255]^ir[255&t]^this.roundkey[a],l=Zi[t>>>24]^er[e>>>16&255]^tr[r>>>8&255]^ir[255&i]^this.roundkey[a+1],u=Zi[i>>>24]^er[t>>>16&255]^tr[e>>>8&255]^ir[255&r]^this.roundkey[a+2],d=Zi[r>>>24]^er[i>>>16&255]^tr[t>>>8&255]^ir[255&e]^this.roundkey[a+3],e=c,t=l,i=u,r=d}const h=4278190080&rr[e>>>24&255]^16711680&rr[r>>>16&255]^65280&rr[i>>>8&255]^255&rr[t>>>0&255]^this.roundkey[40],f=4278190080&rr[t>>>24&255]^16711680&rr[e>>>16&255]^65280&rr[r>>>8&255]^255&rr[i>>>0&255]^this.roundkey[41],m=4278190080&rr[i>>>24&255]^16711680&rr[t>>>16&255]^65280&rr[e>>>8&255]^255&rr[r>>>0&255]^this.roundkey[42],p=4278190080&rr[r>>>24&255]^16711680&rr[i>>>16&255]^65280&rr[t>>>8&255]^255&rr[e>>>0&255]^this.roundkey[43];this.outView.setUint32(0,h^this.iv[0],!1),this.outView.setUint32(4,f^this.iv[1],!1),this.outView.setUint32(8,m^this.iv[2],!1),this.outView.setUint32(12,p^this.iv[3],!1),this.iv[0]=a,this.iv[1]=s,this.iv[2]=n,this.iv[3]=o}}class or extends Ui{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.psshBoxes=[],this.currentFragment=null,this.lastReadFragment=null,this.decryptionKeyCache=new Map,this.reader=e._reader}async getTrackBackings(){return await this.readMetadata(),this.tracks.map(e=>e.trackBacking)}async getMimeType(){await this.readMetadata();const e=await this.getTrackBackings(),t=await Promise.all(e.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>"video"===e.info?.type),hasAudio:this.tracks.some(e=>"audio"===e.info?.type),codecStrings:t.filter(Boolean)})}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0,t=!1,i=!1;for(;;){let r=this.reader.requestSliceRange(e,8,16);if(Re(r)&&(r=await r),!r)break;const a=e,s=ji(r);if(!s)break;if("ftyp"===s.name||"styp"===s.name){const e=rc(r,4);this.isQuickTime="qt "===e}else{if("moov"===s.name){let e=this.reader.requestSlice(r.filePos,s.contentSize);if(Re(e)&&(e=await e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice);for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}t=this.isFragmented&&null!==this.reader.fileSize&&this.reader.fileSize>a+s.totalSize,i=!0;break}if("moof"===s.name){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');await this.copyMetadataFromInitInput(this.input._initInput),t=!1,i=!0;break}}e=a+s.totalSize}if(!i&&this.input._initInput&&await this.copyMetadataFromInitInput(this.input._initInput),t){E(null!==this.reader.fileSize);let e=this.reader.requestSlice(this.reader.fileSize-4,4);Re(e)&&(e=await e),E(e);const t=$o(e),i=this.reader.fileSize-t;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(Re(e)&&(e=await e),e){const t=ji(e);if(t&&"mfra"===t.name){let i=this.reader.requestSlice(e.filePos,t.contentSize);Re(i)&&(i=await i),i&&this.readContiguousBoxes(i)}}}}})())}async copyMetadataFromInitInput(e){const t=await e._getDemuxer();if(t.constructor!==or)throw new Error("Init input must match the input's format.");await t.readMetadata(),this.movieTimescale=t.movieTimescale,this.movieDurationInTimescale=t.movieDurationInTimescale,this.metadataTags=t.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=t.fragmentTrackDefaults,this.psshBoxes=t.psshBoxes;for(const i of t.tracks){const e={id:i.id,demuxer:this,trackBacking:null,disposition:i.disposition,timescale:i.timescale,durationInMediaTimescale:i.durationInMediaTimescale,durationInMovieTimescale:i.durationInMovieTimescale,rotation:i.rotation,internalCodecId:i.internalCodecId,name:i.name,languageCode:i.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:i.editListPreviousSegmentDurations,editListOffset:i.editListOffset,encryptionInfo:i.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:i.info};if(i.trackBacking)if(E(e.info),"video"===e.info.type&&-1!==e.info.width){const t=e;e.trackBacking=new lr(t),this.tracks.push(e)}else if("audio"===e.info.type&&-1!==e.info.numberOfChannels){const t=e;e.trackBacking=new ur(t),this.tracks.push(e)}}}getSampleTableForTrack(e){if(e.sampleTable)return e.sampleTable;const t={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=t,null===e.sampleTableByteOffset)return t;E(this.moovSlice);const i=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(i),this.currentTrack=null;if("audio"===e.info?.type&&e.info.codec&&pi.includes(e.info.codec)&&0===t.sampleCompositionTimeOffsets.length){E("audio"===e.info?.type);const i=Bi(e.info.codec),r=[],a=[];for(let s=0;se.startIndex),u=t.sampleTimingEntries[l],d=Z(t.sampleTimingEntries,c,e=>e.startIndex),h=t.sampleTimingEntries[d],f=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,m=h.startDecodeTimestamp+(c-h.startIndex)*h.delta-f,p=R(r);p&&p.delta===m?p.count++:r.push({startIndex:n.startChunkIndex+s,startDecodeTimestamp:f,count:1,delta:m});const g=n.samplesPerChunk*i.sampleSize*e.info.numberOfChannels;a.push(g)}n.startSampleIndex=n.startChunkIndex,n.samplesPerChunk=1}t.sampleTimingEntries=r,t.sampleSizes=a}if(t.sampleCompositionTimeOffsets.length>0){t.presentationTimestamps=[];for(const e of t.sampleTimingEntries)for(let i=0;ie.presentationTimestamp-t.presentationTimestamp),t.presentationTimestampIndexMap=Array(t.presentationTimestamps.length).fill(-1);for(let e=0;ee.moofOffset===a.moofOffset);if(i)pr(s,i.timestamp);else{const e=Z(t,a.moofOffset-1,e=>e.moofOffset);if(-1!==e){const i=t[e];pr(s,i.endTimestamp)}}s.startTimestampIsFinal=!0}const i=Z(t,s.startTimestamp,e=>e.startTimestamp);if(-1!==i&&t[i].moofOffset===a.moofOffset||t.splice(i+1,0,{moofOffset:a.moofOffset,startTimestamp:s.startTimestamp,endTimestamp:s.endTimestamp}),s.encryptionAuxInfo&&e.encryptionInfo){const t=await br(this.reader,e.encryptionInfo,s.encryptionAuxInfo);for(let e=0;e0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;ke(t.languageCode)||(t.languageCode=ue)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=rc(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:{...K},avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=L,this.readContiguousBoxes(e.slice(H,q.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const i=Wo(e);e.skip(3);const r=$o(e);for(let a=0;a0&&(1===n?(e.skip(4),c=8*$o(e),e.skip(8)):2===n&&(e.skip(4),l=ic(e),o=$o(e),e.skip(4),c=$o(e),u=$o(e),e.skip(8))),t.info.numberOfChannels=o,t.info.sampleRate=l,t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+a.totalSize-e.filePos));const d="enca"===s?t.frmaCodecString:s;if(t.frmaCodecString=null,"mp4a"===d);else if("opus"===d)t.info.codec="opus",t.info.sampleRate=xi;else if("flac"===d)t.info.codec="flac";else if("ulaw"===d)t.info.codec="ulaw";else if("alaw"===d)t.info.codec="alaw";else if("ac-3"===d)t.info.codec="ac3";else if("ec-3"===d)t.info.codec="eac3";else if(Si.includes(d))t.info.codec="dts",t.info.dtsFormat=d;else if("twos"===d)8===c?t.info.codec="pcm-s8":16===c?t.info.codec=t.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(Ke._warn(`Unsupported sample size ${c} for codec 'twos'.`),t.info.codec=null);else if("sowt"===d)8===c?t.info.codec="pcm-s8":16===c?t.info.codec="pcm-s16":(Ke._warn(`Unsupported sample size ${c} for codec 'sowt'.`),t.info.codec=null);else if("raw "===d)t.info.codec="pcm-u8";else if("in24"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if("in32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if("fl32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if("fl64"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if("ipcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?16===e?t.info.codec="pcm-s16":24===e?t.info.codec="pcm-s24":32===e?t.info.codec="pcm-s32":(Ke._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null):16===e?t.info.codec="pcm-s16be":24===e?t.info.codec="pcm-s24be":32===e?t.info.codec="pcm-s32be":(Ke._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null)}else if("fpcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?32===e?t.info.codec="pcm-f32":64===e?t.info.codec="pcm-f64":(Ke._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null):32===e?t.info.codec="pcm-f32be":64===e?t.info.codec="pcm-f64be":(Ke._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=c+7>>3,i=Boolean(1&u),r=Boolean(2&u),a=4&u?-1:0;c>0&&c<=64&&(i?32===c&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):a&1<0?(t.encryptionInfo.defaultCryptByteBlock=r>>4,t.encryptionInfo.defaultSkipByteBlock=15&r):(t.encryptionInfo.defaultCryptByteBlock=0,t.encryptionInfo.defaultSkipByteBlock=0),t.encryptionInfo.defaultIsProtected=0!==Wo(e),t.encryptionInfo.defaultPerSampleIvSize=Wo(e),t.encryptionInfo.defaultKid=Q(qo(e,16)),t.encryptionInfo.defaultIsProtected&&0===t.encryptionInfo.defaultPerSampleIvSize){const i=Wo(e),r=new Uint8Array(16);r.set(qo(e,i),0),t.encryptionInfo.defaultConstantIv=r}}break;case"avcC":{const t=this.currentTrack;if(!t)break;if(E(t.info),0===q.contentSize)break;t.info.codecDescription=qo(e,q.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;if(E(t.info),0===q.contentSize)break;t.info.codecDescription=qo(e,q.contentSize)}break;case"vpcC":{const t=this.currentTrack;if(!t)break;E("video"===t.info?.type),e.skip(4);const i=Wo(e),r=Wo(e),a=Wo(e),s=a>>4,n=a>>1&7,o=1&a,c=Wo(e),l=Wo(e),u=Wo(e);t.info.vp9CodecInfo={profile:i,level:r,bitDepth:s,chromaSubsampling:n,videoFullRangeFlag:o,colourPrimaries:c,transferCharacteristics:l,matrixCoefficients:u}}break;case"av1C":{const t=this.currentTrack;if(!t)break;E("video"===t.info?.type),e.skip(1);const i=Wo(e),r=i>>5,a=31&i,s=Wo(e),n=s>>7,o=s>>6&1,c=s>>4&1,l=s>>3&1,u=s>>2&1,d=3&s,h=2===r&&o?s>>5&1?12:10:o?10:8;e.skip(1);const f=qo(e,q.contentSize-4),m=Ut(f);t.info.av1CodecInfo={profile:r,level:a,tier:n,bitDepth:h,monochrome:c,chromaSubsamplingX:l,chromaSubsamplingY:u,chromaSamplePosition:d,videoFullRangeFlag:m?.videoFullRangeFlag??0,colourPrimaries:m?.colourPrimaries??2,transferCharacteristics:m?.transferCharacteristics??2,matrixCoefficients:m?.matrixCoefficients??2}}break;case"colr":{const t=this.currentTrack;if(!t)break;E("video"===t.info?.type);const i=rc(e,4);if("nclx"!==i&&"nclc"!==i)break;const r=Vo(e),a=Vo(e),s=Vo(e);let n;"nclx"===i&&(n=Boolean(128&Wo(e))),t.info.colorSpace={primaries:U[r],transfer:W[a],matrix:V[s],fullRange:n}}break;case"pasp":{const t=this.currentTrack;if(!t)break;E("video"===t.info?.type);const i=$o(e),r=$o(e);i>0&&r>0&&(i>r?t.info.squarePixelWidth=Math.round(t.info.width*i/r):t.info.squarePixelHeight=Math.round(t.info.height*r/i))}break;case"esds":{const t=this.currentTrack;if(!t||"audio"!==t.info?.type)break;e.skip(4);E(3===Wo(e)),$i(e),e.skip(2);const i=Wo(e),r=0!==(64&i),a=0!==(32&i);if(0!==(128&i)&&e.skip(2),r){const t=Wo(e);e.skip(t)}a&&e.skip(2);E(4===Wo(e));const s=$i(e),n=e.filePos,o=Wo(e);if(64===o||103===o?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===o,objectType:null}):105===o||107===o?t.info.codec="mp3":221===o?t.info.codec="vorbis":169===o?t.info.codec="dts":Ke._warn(`Unsupported audio codec (objectTypeIndication ${o}) - discarding track.`),e.skip(12),s>e.filePos-n){E(5===Wo(e));const i=$i(e);if(t.info.codecDescription=qo(e,i),"aac"===t.info.codec){const e=Ze(t.info.codecDescription);null!==e.outputNumberOfChannels&&(t.info.numberOfChannels=e.outputNumberOfChannels),null!==e.outputSampleRate&&(t.info.sampleRate=e.outputSampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type),t.info.pcmLittleEndian=!!(255&Vo(e))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type),e.skip(4);const i=Wo(e);t.info.pcmLittleEndian=Boolean(1&i),t.info.pcmSampleSize=Wo(e)}break;case"dOps":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type),e.skip(1);const i=Wo(e),r=Vo(e),a=$o(e),s=Ko(e),n=Wo(e);let o;o=0!==n?qo(e,2+i):new Uint8Array(0);const c=new Uint8Array(19+o.byteLength),l=new DataView(c.buffer);l.setUint32(0,1332770163,!1),l.setUint32(4,1214603620,!1),l.setUint8(8,1),l.setUint8(9,i),l.setUint16(10,r,!0),l.setUint32(12,a,!0),l.setInt16(16,s,!0),l.setUint8(18,n),c.set(o,19),t.info.codecDescription=c,t.info.numberOfChannels=i}break;case"dfLa":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type),e.skip(4);const i=127,r=128,a=e.filePos;for(;e.filePos>>12,a=1+(i>>9&7);t.info.sampleRate=r,t.info.numberOfChannels=a,e.skip(20)}else e.skip(s);if(a&r)break}const s=e.filePos;e.filePos=a;const n=qo(e,s-a),o=new Uint8Array(4+n.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(n,4),t.info.codecDescription=o}break;case"dac3":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type);const i=qo(e,3),r=new Qe(i),a=r.readBits(2);r.skipBits(8);const s=r.readBits(3),n=r.readBits(1);a<3&&(t.info.sampleRate=it[a]),t.info.numberOfChannels=$t[s]+n}break;case"dec3":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type);const i=(e=>{if(e.length<2)return null;const t=new Qe(e),i=t.readBits(13),r=t.readBits(3),a=[];for(let s=0;s<=r&&!(Math.ceil(t.pos/8)+3>e.length);s++){const e=t.readBits(2),i=t.readBits(5);t.skipBits(1),t.skipBits(1);const r=t.readBits(3),s=t.readBits(3),n=t.readBits(1);t.skipBits(3);const o=t.readBits(4);let c=0;o>0?c=t.readBits(9):t.skipBits(1),a.push({fscod:e,fscod2:null,bsid:i,bsmod:r,acmod:s,lfeon:n,numDepSub:o,chanLoc:c})}return 0===a.length?null:{dataRate:i,substreams:a}})(qo(e,q.contentSize));if(!i){Ke._warn("Invalid dec3 box contents, ignoring.");break}const r=Zt(i);null!==r&&(t.info.sampleRate=r),t.info.numberOfChannels=ei(i)}break;case"ddts":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type);const i=(e=>{if(e.length<20)return null;const t=N(e),i=t.getUint32(0);if(0===i)return null;const r=new Qe(e);r.seekToByte(13);const a=r.readBits(2);r.skipBits(5);const s=r.readBits(1),n=r.readBits(6);r.skipBits(14),r.skipBits(1),r.skipBits(3);const o=r.readBits(16);let c=null;return 0!==o?c=fi(o):ne.id===i);if(!r)break;const a=$o(e),s=(12&a)>>2,n=3&a,o=[Wo,Vo,jo,$o],c=o[(48&a)>>4],l=o[s],u=o[n],d=$o(e);for(let h=0;he.timestamp-t.timestamp);for(let e=0;e({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let a=0;ae.id===l);if(!u)break;const d=this.fragmentTrackDefaults.find(e=>e.trackId===l);this.currentTrack=u,u.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:d?.defaultSampleDescriptionIndex??null,defaultSampleDuration:d?.defaultSampleDuration??null,defaultSampleSize:d?.defaultSampleSize??null,defaultSampleFlags:d?.defaultSampleFlags??null,startTimestamp:null,encryptionAuxInfo:null},i?u.currentFragmentState.baseDataOffset=Jo(e):c&&(u.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),r&&(u.currentFragmentState.sampleDescriptionIndex=$o(e)),a&&(u.currentFragmentState.defaultSampleDuration=$o(e)),s&&(u.currentFragmentState.defaultSampleSize=$o(e)),n&&(u.currentFragmentState.defaultSampleFlags=$o(e)),o&&(u.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;E(t.currentFragmentState);const i=Wo(e);e.skip(3);const r=0===i?$o(e):Jo(e);t.currentFragmentState.startTimestamp=r}break;case"trun":{const t=this.currentTrack;if(!t)break;E(this.currentFragment),E(t.currentFragmentState);const i=Wo(e),r=jo(e),a=Boolean(1&r),s=Boolean(4&r),n=Boolean(256&r),o=Boolean(512&r),c=Boolean(1024&r),l=Boolean(2048&r),u=$o(e);let d=null;a&&(d=Qo(e));let h,f=null;s&&(f=$o(e)),this.currentFragment.trackData.has(t.id)?(h=this.currentFragment.trackData.get(t.id),null!==d&&(h.currentOffset=t.currentFragmentState.baseDataOffset+d)):(h={track:t,currentTimestamp:0,currentOffset:t.currentFragmentState.baseDataOffset+(d??0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(t.id,h));for(let m=0;m0&&(a=qo(e,r));const s=yr(t);s.defaultSampleInfoSize=i,s.sampleSizes=a,s.sampleCount=r}break;case"saio":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=Wo(e);if(1&jo(e)){const i=rc(e,4),r=$o(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const r=$o(e);if(0===r)break;r>1&&Ke._warn("Multiple saio entries are not supported; using the first offset only.");let a=0===i?$o(e):Number(Jo(e));this.currentFragment&&(a+=this.currentFragment.moofOffset);yr(t).offset=a}break;case"senc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;E(this.currentFragment);const i=this.currentFragment.trackData.get(t.id);if(!i)break;e.skip(1);const r=jo(e),a=Boolean(2&r),s=$o(e),n=t.encryptionInfo.defaultPerSampleIvSize;E(null!==n);for(let o=0;o0?r.set(qo(e,n),0):r.set(t.encryptionInfo.defaultConstantIv,0);let s=null;if(a){const t=Vo(e);s=[];for(let i=0;i0&&((B=this.metadataTags).trackNumber??(B.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((F=this.metadataTags).tracksTotal??(F.tracksTotal=i))}break;case"trkn":if(a instanceof Uint8Array&&a.length>=6){const e=N(a),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&((A=this.metadataTags).trackNumber??(A.trackNumber=t)),i>0&&((D=this.metadataTags).tracksTotal??(D.tracksTotal=i))}break;case"disc":case"disk":if(a instanceof Uint8Array&&a.length>=6){const e=N(a),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&((M=this.metadataTags).discNumber??(M.discNumber=t)),i>0&&((z=this.metadataTags).discsTotal??(z.discsTotal=i))}}}}}return e.filePos=j,!0}}class cr{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.tracks)if(r.trackBacking.getType()===t&&i++,r===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){const e=this.internalTrack;if(e.durationInMediaTimescale<=0)return null;E(e.trackBacking);const t=await e.trackBacking.getFirstPacket({metadataOnly:!0});return(t?.timestamp??0)+e.durationInMediaTimescale/e.timescale}async getLiveRefreshInterval(){return null}async getFirstPacket(e){const t=await this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)}mapTimestampIntoTimescale(e){return de(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}async getPacket(e,t){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=dr(r,i),s=await this.fetchPacketForSampleIndex(a,t);return kr(r)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=Z(t.presentationTimestamps,i,e=>e.presentationTimestamp);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=ae(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=i);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>r.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.samples.findIndex(e=>e.isKeyFrame);return E(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)}async fetchPacketForSampleIndex(e,t){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=fr(i,e);if(!r)return null;let a;if(t.metadataOnly)a=qi;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.sampleOffset,r.sampleSize);if(Re(t)&&(t=await t),!t)return null;if(a=qo(t,r.sampleSize),this.internalTrack.encryptionInfo){let t=null;if(this.internalTrack.encryptionAuxInfo){const i=await br(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);ee.timestamp),u=-1!==l?this.internalTrack.fragmentLookupTable[l]:null,d=Z(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),h=-1!==d?this.internalTrack.fragmentPositionCache[d]:null,f=Math.max(u?.moofOffset??0,h?.moofOffset??0)||null;let m;for(e?null===f||e.moofOffset>=f?(m=e.moofOffset+e.moofSize,n=e):m=f:m=f??0;;){if(n){const e=n.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=s.reader.requestSliceRange(m,8,16);if(Re(e)&&(e=await e),!e)break;const i=m,l=ji(e);if(!l)break;if("moof"===l.name){n=await s.readFragment(i);const{sampleIndex:e,correctSampleFound:r}=t(n);if(r)return this.fetchPacketInFragment(n,e,a);-1!==e&&(o=n,c=e)}m=i+l.totalSize}if(u&&(!o||o.moofOffset{var e,t,i,r,a;if("avc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("hevc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo&&(2!==(a=this.internalTrack.info.vp9CodecInfo).colourPrimaries||2!==a.transferCharacteristics||2!==a.matrixCoefficients))if("av1"!==this.internalTrack.info.codec||this.internalTrack.info.av1CodecInfo&&(e=>2!==e.colourPrimaries||2!==e.transferCharacteristics||2!==e.matrixCoefficients)(this.internalTrack.info.av1CodecInfo)){if("prores"===this.internalTrack.info.codec&&!this.internalTrack.info.proresCodecInfo){const e=await this.getFirstPacket({});this.internalTrack.info.proresCodecInfo=e&&qt(e.data)}}else{const e=await this.getFirstPacket({}),t=e&&Ut(e.data);t&&(this.internalTrack.info.av1CodecInfo=t)}else{const e=await this.getFirstPacket({}),t=e&&zt(e.data);t&&(this.internalTrack.info.vp9CodecInfo={...this.internalTrack.info.vp9CodecInfo??t,videoFullRangeFlag:t.videoFullRangeFlag,colourPrimaries:t.colourPrimaries,transferCharacteristics:t.transferCharacteristics,matrixCoefficients:t.matrixCoefficients})}else{const e=await this.getFirstPacket({});this.internalTrack.info.hevcCodecInfo=e&&xt(e.data)}else{const e=await this.getFirstPacket({});this.internalTrack.info.avcCodecInfo=e&>(e.data)}if(!j(this.internalTrack.info.colorSpace)){const a=Pi(this.internalTrack.info);(e=this.internalTrack.info.colorSpace).primaries??(e.primaries=a.primaries),(t=this.internalTrack.info.colorSpace).transfer??(t.transfer=a.transfer),(i=this.internalTrack.info.colorSpace).matrix??(i.matrix=a.matrix),(r=this.internalTrack.info.colorSpace).fullRange??(r.fullRange=a.fullRange)}const s={codec:vi(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(s.displayAspectWidth=this.internalTrack.info.squarePixelWidth,s.displayAspectHeight=this.internalTrack.info.squarePixelHeight),s})()):null}}class ur extends cr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=await this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&ui(e.data)}return{codec:Ii(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}})()):null}}const dr=(e,t)=>{if(e.presentationTimestamps){const i=Z(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===i?-1:e.presentationTimestamps[i].sampleIndex}{const i=Z(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===i)return-1;const r=e.sampleTimingEntries[i];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},hr=(e,t)=>{if(!e.keySampleIndices)return dr(e,t);if(e.presentationTimestamps){const i=Z(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===i)return-1;for(let t=i;t>=0;t--){const i=e.presentationTimestamps[t].sampleIndex;if(-1!==J(e.keySampleIndices,i,e=>e))return i}return-1}{const i=dr(e,t),r=Z(e.keySampleIndices,i,e=>e);return e.keySampleIndices[r]??-1}},fr=(e,t)=>{const i=Z(e.sampleTimingEntries,t,e=>e.startIndex),r=e.sampleTimingEntries[i];if(!r||r.startIndex+r.count<=t)return null;let a=r.startDecodeTimestamp+(t-r.startIndex)*r.delta;const s=Z(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),n=e.sampleCompositionTimeOffsets[s];n&&t-n.startIndexe.startSampleIndex),l=e.sampleToChunk[c];E(l);const u=l.startChunkIndex+Math.floor((t-l.startSampleIndex)/l.samplesPerChunk),d=e.chunkOffsets[u],h=l.startSampleIndex+(u-l.startChunkIndex)*l.samplesPerChunk;let f=0,m=d;if(1===e.sampleSizes.length)m+=o*(t-h),f+=o*l.samplesPerChunk;else for(let g=h;ge)}},mr=(e,t)=>{if(!e.keySampleIndices)return t+1;const i=Z(e.keySampleIndices,t,e=>e);return e.keySampleIndices[i+1]??-1},pr=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const i of e.samples)i.presentationTimestamp+=t;for(const i of e.presentationTimestamps)i.presentationTimestamp+=t},gr=e=>{const[t,i]=e,r=Math.atan2(i,t);return Number.isFinite(r)?r*(180/Math.PI):0},kr=e=>0===e.sampleSizes.length,yr=e=>{var t;return e.currentFragmentState?(t=e.currentFragmentState).encryptionAuxInfo??(t.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}):e.encryptionAuxInfo??(e.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null})},br=async(e,t,i)=>{if(i.resolved)return i.resolved;if(null===i.offset||0===i.sampleCount)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(i.defaultSampleInfoSize>0)r=i.defaultSampleInfoSize*i.sampleCount;else{E(i.sampleSizes);for(let e=0;e0?i.defaultSampleInfoSize:i.sampleSizes[o],r=new Uint8Array(16);s>0?r.set(qo(a,s),0):r.set(t.defaultConstantIv,0);let c=null;if(e>s){const e=Vo(a);c=[];for(let t=0;te.defaultConstantIv?{iv:e.defaultConstantIv,subsamples:null}:null,Tr=async(e,t,i,r)=>{E(e.encryptionInfo);const a=e.encryptionInfo;E(null!==a.defaultKid);const s=a.defaultKid;let n;const o=e.demuxer.decryptionKeyCache.get(s);if(o)n=await o;else{if(!e.demuxer.input._formatOptions.isobmff?.resolveKeyId)throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");const t=(async()=>{let t=e.demuxer.psshBoxes;if(r){t=[...t,...r.psshBoxes].filter(e=>null===e.keyIds||e.keyIds.includes(s));for(let e=0;e{E(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;i{const a=new Uint8Array(16);a.set(i.iv,0);const s=await crypto.subtle.importKey("raw",e,{name:"AES-CTR"},!1,["decrypt"]),n=async e=>{const t=await crypto.subtle.decrypt({name:"AES-CTR",counter:a,length:64},s,e);return new Uint8Array(t)};if(!i.subsamples)return n(r);E(null!==t.defaultCryptByteBlock&&null!==t.defaultSkipByteBlock);const o=Pr(i.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock);let c=0;for(const m of o)for(const e of m.perSubsample)c+=e.length;const l=new Uint8Array(c);let u=0;for(const m of o)for(const e of m.perSubsample)l.set(r.subarray(e.offset,e.offset+e.length),u),u+=e.length;const d=await n(l),h=new Uint8Array(r);let f=0;for(const m of o)for(const e of m.perSubsample)h.set(d.subarray(f,f+e.length),e.offset),f+=e.length;return h},vr=(e,t,i,r)=>{const a=new nr;a.init({key:e,iv:i.iv});const s=t.defaultCryptByteBlock,n=t.defaultSkipByteBlock;if(E(null!==s&&null!==n),!i.subsamples){const e=new Uint8Array(r),t=Math.floor(r.length/16);for(let i=0;i{const r=[],a=0!==t||0!==i;let s=0;for(const n of e){s+=n.clearLen;const e=[];if(a){let r=n.protectedLen,a=s;for(;r>0&&!(r<16*t);){const s=16*t;e.push({offset:a,length:s}),a+=s,r-=s;const n=Math.min(16*i,r);a+=n,r-=n}s+=n.protectedLen}else n.protectedLen>0&&e.push({offset:s,length:n.protectedLen}),s+=n.protectedLen;r.push({perSubsample:e})}return r};var Ir,xr;(xr=Ir||(Ir={}))[xr.EBML=440786851]="EBML",xr[xr.EBMLVersion=17030]="EBMLVersion",xr[xr.EBMLReadVersion=17143]="EBMLReadVersion",xr[xr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",xr[xr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",xr[xr.DocType=17026]="DocType",xr[xr.DocTypeVersion=17031]="DocTypeVersion",xr[xr.DocTypeReadVersion=17029]="DocTypeReadVersion",xr[xr.Void=236]="Void",xr[xr.Segment=408125543]="Segment",xr[xr.SeekHead=290298740]="SeekHead",xr[xr.Seek=19899]="Seek",xr[xr.SeekID=21419]="SeekID",xr[xr.SeekPosition=21420]="SeekPosition",xr[xr.Duration=17545]="Duration",xr[xr.Info=357149030]="Info",xr[xr.TimestampScale=2807729]="TimestampScale",xr[xr.MuxingApp=19840]="MuxingApp",xr[xr.WritingApp=22337]="WritingApp",xr[xr.Tracks=374648427]="Tracks",xr[xr.TrackEntry=174]="TrackEntry",xr[xr.TrackNumber=215]="TrackNumber",xr[xr.TrackUID=29637]="TrackUID",xr[xr.TrackType=131]="TrackType",xr[xr.FlagEnabled=185]="FlagEnabled",xr[xr.FlagDefault=136]="FlagDefault",xr[xr.FlagForced=21930]="FlagForced",xr[xr.FlagOriginal=21934]="FlagOriginal",xr[xr.FlagHearingImpaired=21931]="FlagHearingImpaired",xr[xr.FlagVisualImpaired=21932]="FlagVisualImpaired",xr[xr.FlagCommentary=21935]="FlagCommentary",xr[xr.FlagLacing=156]="FlagLacing",xr[xr.Name=21358]="Name",xr[xr.Language=2274716]="Language",xr[xr.LanguageBCP47=2274717]="LanguageBCP47",xr[xr.CodecID=134]="CodecID",xr[xr.CodecPrivate=25506]="CodecPrivate",xr[xr.CodecDelay=22186]="CodecDelay",xr[xr.SeekPreRoll=22203]="SeekPreRoll",xr[xr.DefaultDuration=2352003]="DefaultDuration",xr[xr.Video=224]="Video",xr[xr.PixelWidth=176]="PixelWidth",xr[xr.PixelHeight=186]="PixelHeight",xr[xr.DisplayWidth=21680]="DisplayWidth",xr[xr.DisplayHeight=21690]="DisplayHeight",xr[xr.DisplayUnit=21682]="DisplayUnit",xr[xr.AlphaMode=21440]="AlphaMode",xr[xr.Audio=225]="Audio",xr[xr.SamplingFrequency=181]="SamplingFrequency",xr[xr.Channels=159]="Channels",xr[xr.BitDepth=25188]="BitDepth",xr[xr.SimpleBlock=163]="SimpleBlock",xr[xr.BlockGroup=160]="BlockGroup",xr[xr.Block=161]="Block",xr[xr.BlockAdditions=30113]="BlockAdditions",xr[xr.BlockMore=166]="BlockMore",xr[xr.BlockAdditional=165]="BlockAdditional",xr[xr.BlockAddID=238]="BlockAddID",xr[xr.BlockDuration=155]="BlockDuration",xr[xr.ReferenceBlock=251]="ReferenceBlock",xr[xr.Cluster=524531317]="Cluster",xr[xr.Timestamp=231]="Timestamp",xr[xr.Cues=475249515]="Cues",xr[xr.CuePoint=187]="CuePoint",xr[xr.CueTime=179]="CueTime",xr[xr.CueTrackPositions=183]="CueTrackPositions",xr[xr.CueTrack=247]="CueTrack",xr[xr.CueClusterPosition=241]="CueClusterPosition",xr[xr.Colour=21936]="Colour",xr[xr.MatrixCoefficients=21937]="MatrixCoefficients",xr[xr.TransferCharacteristics=21946]="TransferCharacteristics",xr[xr.Primaries=21947]="Primaries",xr[xr.Range=21945]="Range",xr[xr.Projection=30320]="Projection",xr[xr.ProjectionType=30321]="ProjectionType",xr[xr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",xr[xr.Attachments=423732329]="Attachments",xr[xr.AttachedFile=24999]="AttachedFile",xr[xr.FileDescription=18046]="FileDescription",xr[xr.FileName=18030]="FileName",xr[xr.FileMediaType=18016]="FileMediaType",xr[xr.FileData=18012]="FileData",xr[xr.FileUID=18094]="FileUID",xr[xr.Chapters=272869232]="Chapters",xr[xr.Tags=307544935]="Tags",xr[xr.Tag=29555]="Tag",xr[xr.Targets=25536]="Targets",xr[xr.TargetTypeValue=26826]="TargetTypeValue",xr[xr.TargetType=25546]="TargetType",xr[xr.TagTrackUID=25541]="TagTrackUID",xr[xr.TagEditionUID=25545]="TagEditionUID",xr[xr.TagChapterUID=25540]="TagChapterUID",xr[xr.TagAttachmentUID=25542]="TagAttachmentUID",xr[xr.SimpleTag=26568]="SimpleTag",xr[xr.TagName=17827]="TagName",xr[xr.TagLanguage=17530]="TagLanguage",xr[xr.TagString=17543]="TagString",xr[xr.TagBinary=17541]="TagBinary",xr[xr.ContentEncodings=28032]="ContentEncodings",xr[xr.ContentEncoding=25152]="ContentEncoding",xr[xr.ContentEncodingOrder=20529]="ContentEncodingOrder",xr[xr.ContentEncodingScope=20530]="ContentEncodingScope",xr[xr.ContentCompression=20532]="ContentCompression",xr[xr.ContentCompAlgo=16980]="ContentCompAlgo",xr[xr.ContentCompSettings=16981]="ContentCompSettings",xr[xr.ContentEncryption=20533]="ContentEncryption";const Cr=[Ir.EBML,Ir.Segment],Br=[Ir.SeekHead,Ir.Info,Ir.Cluster,Ir.Tracks,Ir.Cues,Ir.Attachments,Ir.Chapters,Ir.Tags],Er=[...Cr,...Br],_r=16,Rr=e=>{if(e.remainingLength<1)return null;const t=Wo(e);if(e.skip(-1),0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;return e.remainingLength{if(e.remainingLength<1)return null;const t=Wo(e);if(0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;if(e.remainingLength{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r{const t=Rr(e);if(null===t)return null;if(e.remainingLength{if(e.remainingLength<1)return null;if(255===Wo(e))return;e.skip(-1);const t=Fr(e);return null===t?null:72057594037927940!==t?t:void 0},Nr=e=>{E(e.remainingLength>=2);const t=Dr(e);if(null===t)return null;const i=Mr(e);return null===i?null:{id:t,size:i}},Or=(e,t)=>{const i=qo(e,t);let r=0;for(;r{const i=qo(e,t);let r=0;for(;r{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?tc(e):ic(e)},Ur=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;null===r||ss?r:s,found:!1}},qr=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;se.tracks.map(e=>e.trackBacking))}async getMimeType(){await this.readMetadata();const e=await this.getTrackBackings(),t=await Promise.all(e.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>"video"===e.info?.type)),hasAudio:this.segments.some(e=>e.tracks.some(e=>"audio"===e.info?.type)),codecStrings:t.filter(Boolean)})}async getMetadataTags(){await this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&await this.loadSegmentMetadata(t),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e={...e,...t.metadataTags};return e}readMetadata(){return this.readMetadataPromise??(this.readMetadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,_r);if(Re(t)&&(t=await t),!t)break;const i=Nr(t);if(!i)break;const r=i.id;let a=i.size;const s=t.filePos;if(r===Ir.EBML){ia(a);let e=this.reader.requestSlice(s,a);if(Re(e)&&(e=await e),!e)break;this.readContiguousElements(e)}else if(r===Ir.Segment){if(await this.readSegment(s,a),void 0===a)break;if(null===this.reader.fileSize)break}else if(r===Ir.Cluster){if(null===this.reader.fileSize)break;if(void 0===a){a=(await Ur(this.reader,s,Er,this.reader.fileSize)).pos-s}const e=R(this.segments);e&&(e.elementEndPos=s+a)}ia(a),e=s+a}})())}async readSegment(e,t){this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let i=e;for(;null===this.currentSegment.elementEndPos||ie.id===a);if(-1!==o){const e=la[o].flag;this.currentSegment[e]=!0,ia(s);let t=this.reader.requestSlice(n,s);Re(t)&&(t=await t),t&&this.readContiguousElements(t)}else if(a===Ir.Tags||a===Ir.Attachments){a===Ir.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,ia(s);let e=this.reader.requestSlice(n,s);Re(e)&&(e=await e),e&&this.readContiguousElements(e)}else if(a===Ir.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===s)break;i=n+s}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const n of this.currentSegment.seekEntries){const t=la.find(e=>e.id===n.id);if(!t)continue;if(this.currentSegment[t.flag])continue;let i=this.reader.requestSliceRange(e+n.segmentPosition,2,_r);if(Re(i)&&(i=await i),!i)continue;const r=Nr(i);if(!r)continue;const{id:a,size:s}=r;if(a!==t.id)continue;ia(s),this.currentSegment[t.flag]=!0;let o=this.reader.requestSlice(i.filePos,s);Re(o)&&(o=await o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const n of this.currentSegment.tracks)null!==n.defaultDurationNs&&(n.defaultDuration=this.currentSegment.timestampFactor*n.defaultDurationNs/1e9);const r=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const n of this.currentSegment.cuePoints){const e=r.get(n.trackId);e&&e.cuePoints.push(n)}for(const n of this.currentSegment.tracks){n.cuePoints.sort((e,t)=>e.time-t.time);for(let e=0;es&&(s=n.cuePoints.length,a=n);for(const n of this.currentSegment.tracks)0===n.cuePoints.length&&(n.cuePoints=a.cuePoints);this.currentSegment=null}async readCluster(e,t){if(t.lastReadCluster?.elementStartPos===e)return t.lastReadCluster;let i=this.reader.requestSliceRange(e,2,_r);Re(i)&&(i=await i),E(i);const r=e,a=Nr(i);E(a);E(a.id===Ir.Cluster);let s=a.size;const n=i.filePos;if(void 0===s){s=(await Ur(this.reader,n,Er,t.elementEndPos)).pos-n}let o=this.reader.requestSlice(n,s);Re(o)&&(o=await o);const c={segment:t,elementStartPos:r,elementEndPos:n+s,dataStartPos:n,timestamp:-1,trackData:new Map};if(this.currentCluster=c,o){const e=this.readContiguousElements(o,Er);c.elementEndPos=e}for(const[,l]of c.trackData){const e=l.track;E(l.blocks.length>0);let t=!1;for(let r=0;r({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let r=0;r({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const i=l.blocks[l.presentationTimestamps[0].blockIndex],a=l.blocks[R(l.presentationTimestamps).blockIndex];l.startTimestamp=i.timestamp,l.endTimestamp=a.timestamp+a.duration;const s=Z(e.clusterPositionCache,l.startTimestamp,e=>e.startTimestamp);-1!==s&&e.clusterPositionCache[s].elementStartPos===r||e.clusterPositionCache.splice(s+1,0,{elementStartPos:c.elementStartPos,startTimestamp:l.startTimestamp})}return t.lastReadCluster=c,c}getTrackDataInCluster(e,t){let i=e.trackData.get(t);if(!i){const r=e.segment.tracks.find(e=>e.id===t);if(!r)return null;i={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,i)}return i}expandLacedBlocks(e,t){for(let i=0;i=2;){const i=e.filePos;if(!this.traverseElement(e,t))return i}return e.filePos}traverseElement(e,t){const i=Nr(e);if(!i)return!1;if(t&&t.includes(i.id))return!1;const{id:r,size:a}=i,s=e.filePos;switch(ia(a),r){case Ir.DocType:this.isWebM="webm"===Or(e,a);break;case Ir.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(s,a)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case Ir.SeekID:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=Ar(e,a)}break;case Ir.SeekPosition:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=Ar(e,a)}break;case Ir.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=Ar(e,a),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case Ir.Duration:if(!this.currentSegment)break;this.currentSegment.duration=Lr(e,a);break;case Ir.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:{...Ge,primary:!1},trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(s,a)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>"decompress"!==e.data?.type||e.scope!==sa.Block||e.data.algorithm!==oa.HeaderStripping)&&(Ke._warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,null!==this.currentTrack.info.displayWidth&&null!==this.currentTrack.info.displayHeight){const e=this.currentTrack.info.displayWidth*this.currentTrack.info.height,t=this.currentTrack.info.displayHeight*this.currentTrack.info.width;e>0&&t>0&&(e>t?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*e/t):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*t/e))}if(this.currentTrack.codecId===Wr)this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(this.currentTrack.codecId===Hr)this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(t===Vr)this.currentTrack.info.codec="vp8";else if(t===jr)this.currentTrack.info.codec="vp9";else if(t===Kr)this.currentTrack.info.codec="av1";else if(t===Xr){const e=this.currentTrack.codecPrivate?O.decode(this.currentTrack.codecPrivate):"";Ti.includes(e)&&(this.currentTrack.info.codec="prores",this.currentTrack.info.proresFormat=e)}const e=this.currentTrack;this.currentTrack.trackBacking=new fa(e),this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type){t===$r?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Gr?this.currentTrack.info.codec="mp3":t===Qr?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=xi):t===Yr?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Jr?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Zr?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===ea?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===ta?(this.currentTrack.info.codec="dts","A_DTS/EXPRESS"===this.currentTrack.codecId?this.currentTrack.info.dtsFormat="dtse":"A_DTS/LOSSLESS"===this.currentTrack.codecId&&(this.currentTrack.info.dtsFormat="dtsl")):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack;this.currentTrack.trackBacking=new ma(e),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case Ir.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=Ar(e,a);break;case Ir.TrackType:{if(!this.currentTrack)break;const t=Ar(e,a);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:{...K},alphaMode:!1,proresFormat:null}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null})}break;case Ir.FlagEnabled:if(!this.currentTrack)break;Ar(e,a)||(this.currentTrack=null);break;case Ir.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!Ar(e,a);break;case Ir.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!Ar(e,a);break;case Ir.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!Ar(e,a);break;case Ir.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!Ar(e,a);break;case Ir.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!Ar(e,a);break;case Ir.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!Ar(e,a);break;case Ir.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=Or(e,a);break;case Ir.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=qo(e,a);break;case Ir.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=Ar(e,a);break;case Ir.Name:if(!this.currentTrack)break;this.currentTrack.name=zr(e,a);break;case Ir.Language:if(!this.currentTrack)break;if(this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=Or(e,a),ke(this.currentTrack.languageCode)||(this.currentTrack.languageCode=ue);break;case Ir.LanguageBCP47:{if(!this.currentTrack)break;const t=Or(e,a).split("-")[0];this.currentTrack.languageCode=t||ue,this.currentTrack.hasLanguageBcp47=!0}break;case Ir.Video:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case Ir.PixelWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.width=Ar(e,a);break;case Ir.PixelHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.height=Ar(e,a);break;case Ir.DisplayWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayWidth=Ar(e,a);break;case Ir.DisplayHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayHeight=Ar(e,a);break;case Ir.DisplayUnit:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayUnit=Ar(e,a);break;case Ir.AlphaMode:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.alphaMode=1===Ar(e,a);break;case Ir.Colour:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case Ir.MatrixCoefficients:{if("video"!==this.currentTrack?.info?.type)break;const t=Ar(e,a),i=V[t];this.currentTrack.info.colorSpace.matrix=i}break;case Ir.Range:{if("video"!==this.currentTrack?.info?.type)break;const t=Ar(e,a);this.currentTrack.info.colorSpace.fullRange=1===t||2===t?2===t:void 0}break;case Ir.TransferCharacteristics:{if("video"!==this.currentTrack?.info?.type)break;const t=Ar(e,a),i=W[t];this.currentTrack.info.colorSpace.transfer=i}break;case Ir.Primaries:{if("video"!==this.currentTrack?.info?.type)break;const t=Ar(e,a),i=U[t];this.currentTrack.info.colorSpace.primaries=i}break;case Ir.Projection:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case Ir.ProjectionPoseRoll:{if("video"!==this.currentTrack?.info?.type)break;const t=-Lr(e,a);try{this.currentTrack.info.rotation=_(t)}catch{}}break;case Ir.Audio:if("audio"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case Ir.SamplingFrequency:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.sampleRate=Lr(e,a);break;case Ir.Channels:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.numberOfChannels=Ar(e,a);break;case Ir.BitDepth:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.bitDepth=Ar(e,a);break;case Ir.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(s,a)),this.currentCueTime=null;break;case Ir.CueTime:this.currentCueTime=Ar(e,a);break;case Ir.CueTrackPositions:{if(null===this.currentCueTime)break;E(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(s,a)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case Ir.CueTrack:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=Ar(e,a)}break;case Ir.CueClusterPosition:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;E(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+Ar(e,a)}break;case Ir.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=Ar(e,a);break;case Ir.SimpleBlock:{if(!this.currentCluster)break;const t=Fr(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=Ko(e),n=Wo(e),o=n>>1&3;let c=!!(128&n);"audio"===i.track.info?.type&&i.track.info.codec&&(c=!0);const l=qo(e,a-(e.filePos-s)),u=i.track.decodingInstructions.length>0;i.blocks.push({timestamp:r,duration:0,isKeyFrame:c,data:l,lacing:o,decoded:!u,postProcessed:!1,mainAdditional:null})}break;case Ir.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(s,a)),this.currentBlock=null;break;case Ir.Block:{if(!this.currentCluster)break;const t=Fr(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=Ko(e),n=Wo(e)>>1&3,o=qo(e,a-(e.filePos-s)),c=i.track.decodingInstructions.length>0;this.currentBlock={timestamp:r,duration:0,isKeyFrame:!0,data:o,lacing:n,decoded:!c,postProcessed:!1,mainAdditional:null},i.blocks.push(this.currentBlock)}break;case Ir.BlockAdditions:this.readContiguousElements(e.slice(s,a));break;case Ir.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(s,a)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case Ir.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=qo(e,a);break;case Ir.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=Ar(e,a);break;case Ir.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=Ar(e,a);break;case Ir.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case Ir.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(s,a));break;case Ir.Targets:this.readContiguousElements(e.slice(s,a));break;case Ir.TargetTypeValue:50!==Ar(e,a)&&(this.currentTagTargetIsMovie=!1);break;case Ir.TagTrackUID:case Ir.TagEditionUID:case Ir.TagChapterUID:case Ir.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case Ir.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(s,a));break;case Ir.TagName:this.currentSimpleTagName=zr(e,a);break;case Ir.TagString:{if(!this.currentSimpleTagName)break;const t=zr(e,a);this.processTagValue(this.currentSimpleTagName,t)}break;case Ir.TagBinary:{if(!this.currentSimpleTagName)break;const t=qo(e,a);this.processTagValue(this.currentSimpleTagName,t)}break;case Ir.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(s,a));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(t.raw??(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new $e(this.currentAttachedFile.fileData,this.currentAttachedFile.fileMediaType??void 0,this.currentAttachedFile.fileName??void 0,this.currentAttachedFile.fileDescription??void 0)),this.currentAttachedFile.fileMediaType?.startsWith("image/")&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let i="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?i="coverFront":t.startsWith("back.")&&(i="coverBack")}t.images??(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:i,name:this.currentAttachedFile.fileName??void 0,description:this.currentAttachedFile.fileDescription??void 0})}this.currentAttachedFile=null}break;case Ir.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let i=0n;for(let r=0;rt.order-e.order);break;case Ir.ContentEncoding:this.currentDecodingInstruction={order:0,scope:sa.Block,data:null},this.readContiguousElements(e.slice(s,a)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case Ir.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=Ar(e,a);break;case Ir.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=Ar(e,a);break;case Ir.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:oa.Zlib,settings:null},this.readContiguousElements(e.slice(s,a));break;case Ir.ContentCompAlgo:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.algorithm=Ar(e,a);break;case Ir.ContentCompSettings:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.settings=qo(e,a);break;case Ir.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=s+a,!0}decodeBlockData(e,t){E(e.decodingInstructions.length>0);let i=t;for(const r of e.decodingInstructions)if(E(r.data),"decompress"===r.data.type)if(r.data.algorithm===oa.HeaderStripping)if(r.data.settings&&r.data.settings.length>0){const e=r.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var i;if(!this.currentSegment?.metadataTags)return;const r=this.currentSegment.metadataTags;if(r.raw??(r.raw={}),(i=r.raw)[e]??(i[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":r.title??(r.title=t);break;case"description":r.description??(r.description=t);break;case"artist":r.artist??(r.artist=t);break;case"album":r.album??(r.album=t);break;case"album_artist":r.albumArtist??(r.albumArtist=t);break;case"genre":r.genre??(r.genre=t);break;case"comment":r.comment??(r.comment=t);break;case"lyrics":r.lyrics??(r.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||(r.date??(r.date=e))}break;case"track_number":case"part_number":{const e=t.split("/"),i=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(r.trackNumber??(r.trackNumber=i)),a&&Number.isInteger(a)&&a>0&&(r.tracksTotal??(r.tracksTotal=a))}break;case"disc_number":case"disc":{const e=t.split("/"),i=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(r.discNumber??(r.discNumber=i)),a&&Number.isInteger(a)&&a>0&&(r.discsTotal??(r.discsTotal=a))}}}async getDurationFromMetadata(e){if(e.duration<=0)return null;let t=null;for(const r of e.tracks){E(r.trackBacking);const e=await r.trackBacking.getFirstPacket({metadataOnly:!0});e&&(t=Math.min(t??1/0,e.timestamp))}let i=e.duration/e.timestampFactor;return i+=t??0,i}}class ha{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.segments)for(const e of r.tracks)if(e.trackBacking.getType()===t&&i++,e===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return this.internalTrack.demuxer.getDurationFromMetadata(this.internalTrack.segment)}async getLiveRefreshInterval(){return null}async getFirstPacket(e){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)}intoTimescale(e){return de(e*this.internalTrack.segment.timestampFactor)}async getPacket(e,t){const i=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=Z(t.presentationTimestamps,i,e=>e.timestamp);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=ae(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=i);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.blocks.findIndex(e=>e.isKeyFrame);return E(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)}async fetchPacketInCluster(e,t,i){if(-1===t)return null;const r=e.trackData.get(this.internalTrack.id).blocks[t];if(E(r),r.decoded||(r.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,r.data),r.decoded=!0),!r.postProcessed){if("prores"===this.internalTrack.info?.codec){if(!(r.data.length>=8&&105===r.data[4]&&99===r.data[5]&&112===r.data[6]&&102===r.data[7])){const e=new Uint8Array(r.data.length+8);N(e).setUint32(0,e.length,!1),e[4]=105,e[5]=99,e[6]=112,e[7]=102,e.set(r.data,8),r.data=e}}r.postProcessed=!0}const a=i.metadataOnly?qi:r.data,s=r.timestamp/this.internalTrack.segment.timestampFactor,n=r.duration/this.internalTrack.segment.timestampFactor,o={};r.mainAdditional&&"video"===this.internalTrack.info?.type&&this.internalTrack.info.alphaMode&&(o.alpha=i.metadataOnly?qi:r.mainAdditional,o.alphaByteLength=r.mainAdditional.byteLength);const c=new Wi(a,r.isKeyFrame?"key":"delta",s,n,e.dataStartPos+t,r.data.byteLength,o);return this.packetToClusterLocation.set(c,{cluster:e,blockIndex:t}),c}async performClusterLookup(e,t,i,r,a){const{demuxer:s,segment:n}=this.internalTrack;let o=null,c=null,l=-1;if(e){const{blockIndex:i,correctBlockFound:r}=t(e);if(r)return this.fetchPacketInCluster(e,i,a);-1!==i&&(c=e,l=i)}const u=Z(this.internalTrack.cuePoints,i,e=>e.time),d=-1!==u?this.internalTrack.cuePoints[u]:null,h=Z(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),f=-1!==h?this.internalTrack.clusterPositionCache[h]:null,m=Math.max(d?.clusterPosition??0,f?.elementStartPos??0)||null;let p;for(e?null===m||e.elementStartPos>=m?(p=e.elementEndPos,o=e):p=m:p=m??n.clusterSeekStartPos;null===n.elementEndPos||p<=n.elementEndPos-2;){if(o){const e=o.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=s.reader.requestSliceRange(p,2,_r);if(Re(e)&&(e=await e),!e)break;const i=p,u=Nr(e);if(!u||!Br.includes(u.id)&&u.id!==Ir.Void){const e=await qr(s.reader,i,Br,Math.min(n.elementEndPos??1/0,i+ua));if(e){p=e;continue}break}const d=u.id;let h=u.size;const f=e.filePos;if(d===Ir.Cluster){o=await s.readCluster(i,n),h=o.elementEndPos-f;const{blockIndex:e,correctBlockFound:r}=t(o);if(r)return this.fetchPacketInCluster(o,e,a);-1!==e&&(c=o,l=e)}if(void 0===h){E(d!==Ir.Cluster);h=(await Ur(s.reader,f,Er,n.elementEndPos)).pos-f}const m=f+h;if(null===n.elementEndPos){let e=s.reader.requestSliceRange(m,2,_r);if(Re(e)&&(e=await e),!e)break;if(Dr(e)===Ir.Segment){n.elementEndPos=m;break}}p=m}if(d&&(!c||c.elementStartPos{var e,t,i,r;let a=null;("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"prores"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(a=await this.getFirstPacket({}));const s={width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&a?gt(a.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&a?xt(a.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&a?zt(a.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&a?Ut(a.data):null,proresCodecInfo:"prores"===this.internalTrack.info.codec&&a?qt(a.data):null,proresFormat:this.internalTrack.info.proresFormat};if(!j(this.internalTrack.info.colorSpace)){const a=Pi(s);(e=this.internalTrack.info.colorSpace).primaries??(e.primaries=a.primaries),(t=this.internalTrack.info.colorSpace).transfer??(t.transfer=a.transfer),(i=this.internalTrack.info.colorSpace).matrix??(i.matrix=a.matrix),(r=this.internalTrack.info.colorSpace).fullRange??(r.fullRange=a.fullRange)}const n={codec:vi(s),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(n.displayAspectWidth=this.internalTrack.info.squarePixelWidth,n.displayAspectHeight=this.internalTrack.info.squarePixelHeight),n})()):null}}class ma extends ha{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=await this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&ui(e.data)}return{codec:Ii({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo,dtsFormat:this.internalTrack.info.dtsFormat}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}})()):null}}const pa=async(e,t,i,r=null)=>{let a=t;for(;null===i||a=4;){const t=s.filePos,i=$o(s),n=null!==e.fileSize?e.fileSize-a:null,o=Mi(i,n);if(o.header&&(!r||o.header.sampleRate===r.sampleRate&&o.header.mpegVersionId===r.mpegVersionId&&o.header.layer===r.layer&&Li(o.header.channel)===Li(r.channel)))return{header:o.header,startPos:a};s.filePos=t+o.bytesAdvanced,a=s.filePos}}return null};class ga extends Ui{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.firstFrameHeaderPos=null,this.xingFrameHeader=null,this.xingFrameHeaderPos=null,this.loadedSamples=[],this.metadataTags=null,this.xingData=null,this.trackBackings=[],this.readingMutex=new $,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();if(!this.firstFrameHeader&&this.xingFrameHeader&&(this.firstFrameHeader=this.xingFrameHeader,this.firstFrameHeaderPos=this.xingFrameHeaderPos),!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.trackBackings=[new ka(this)]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,uc);if(Re(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=mc(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=await pa(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const i=Di(t.mpegVersionId,t.channel);let r=this.reader.requestSlice(e.startPos+i,4);if(Re(r)&&(r=await r),r){const a=$o(r);if(a===Fi||a===Ai){if(this.xingFrameHeader||(this.xingFrameHeader=t,this.xingFrameHeaderPos=e.startPos),!this.xingData){let t=this.reader.requestSlice(e.startPos+i+4,12);if(Re(t)&&(t=await t),t){const e=qo(t,12),i=N(e),r=i.getUint32(0,!1);this.xingData={frameCount:r&Oi.FrameCount?i.getUint32(4,!1):null,fileSize:r&Oi.FileSize?i.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=t,this.firstFrameHeaderPos=e.startPos);const a=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,s={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:a,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(s),this.nextTimestampInSamples+=t.audioSamplesInFrame}async getMimeType(){return"audio/mpeg"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let i=this.reader.requestSlice(e,uc);if(Re(i)&&(i=await i),!i)break;const r=mc(i);if(!r)break;t=!0;let a=this.reader.requestSlice(i.filePos,r.size);if(Re(a)&&(a=await a),!a)break;pc(a,r,this.metadataTags),e=i.filePos+r.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=lc){let e=this.reader.requestSlice(this.reader.fileSize-lc,lc);Re(e)&&(e=await e),E(e);"TAG"===rc(e,3)&&hc(e,this.metadataTags)}return this.metadataTags}finally{e()}}}class ka{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return E(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){const e=this.demuxer;if(E(null!==e.firstFrameHeader),E(null!==e.firstFrameHeaderPos),e.xingData){if(null!==e.xingData.frameCount)return e.xingData.frameCount*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}else if(null!==e.reader.fileSize){const s=(t=e.firstFrameHeader.lowSamplingFrequency,i=e.firstFrameHeader.layer,r=e.firstFrameHeader.bitrate,a=e.firstFrameHeader.sampleRate,0===i?0:1===i?144*r/(a<e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}}async getPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=Z(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1>>0&4294967295}const wa=e=>{const t=N(e),i=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let a=0;a>>24^t])>>>0}return t.setUint32(22,i,!0),r},Ta=(e,t,i)=>{let r=0,a=null;if(e.length>0)if("vorbis"===t.codec){E(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,n=(e[0]&s)>>1;if(n>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=i;const c=t.vorbisInfo.modeBlockflags[n];if(a=t.vorbisInfo.blocksizes[c],1===c){const i=1+(1|s),r=e[0]&i?1:0;o=t.vorbisInfo.blocksizes[r]}r=null!==o?o+a>>2:0}else if("opus"===t.codec){r=(e=>{const t=e[0]>>3,i=3&e[0];let r;return r=0===i?1:1===i||2===i?2:63&e[1],{durationInSamples:Wt[t]*r}})(e).durationInSamples}return{durationInSamples:r,vorbisBlockSize:a}},Sa=27,va=282,Pa=e=>{const t=e.filePos;if(Go(e)!==ya)return null;e.skip(1);const i=Wo(e),r=ec(e),a=Go(e),s=Go(e),n=Go(e),o=Wo(e),c=new Uint8Array(o);for(let d=0;de+t,0);return{headerStartPos:t,totalSize:l+u,dataStartPos:t+l,dataSize:u,headerType:i,granulePosition:r,serialNumber:a,sequenceNumber:s,checksum:n,lacingValues:c}},Ia=(e,t)=>{for(;e.filePos>>8&255)===i||(t>>>16&255)===i||(t>>>24&255)===i){if(e.skip(-4),t===ya)return!0;e.skip(1)}}return!1};class xa extends Ui{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.trackBackings=[],this.metadataTags={},this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,Sa,va);if(Re(t)&&(t=await t),!t)break;const i=Pa(t);if(!i)break;if(!!!(2&i.headerType))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(const t of this.bitstreams){const e=await this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?await this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&await this.readOpusMetadata(e,t),null!==t.codecInfo.codec&&this.trackBackings.push(new Ca(t,this)))}})())}async readVorbisMetadata(e,t){let i=await this.findNextPacketStart(e);if(!i)return;const r=await this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;if(i=await this.findNextPacketStart(r),!i)return;const a=await this.readPacket(i.startPage,i.startSegmentIndex);if(!a)return;if(3!==r.data[0]||5!==a.data[0])return;const s=[],n=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};n(e.data.length),n(r.data.length);const o=new Uint8Array(1+s.length+e.data.length+r.data.length+a.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(r.data,1+s.length+e.data.length),o.set(a.data,1+s.length+e.data.length+r.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=a;const c=N(e.data);t.numberOfChannels=c.getUint8(11),t.sampleRate=c.getUint32(12,!0);const l=c.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&l),1<<(l>>4)],modeBlockflags:Ht(a.data).modeBlockflags},Xt(r.data.subarray(7),this.metadataTags)}async readOpusMetadata(e,t){const i=await this.findNextPacketStart(e);if(!i)return;const r=await this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=r;const a=(e=>{const t=N(e),i=t.getUint8(9),r=t.getUint16(10,!0),a=t.getUint32(12,!0),s=t.getInt16(16,!0),n=t.getUint8(18);let o=null;return n&&(o=e.subarray(19,21+i)),{outputChannelCount:i,preSkip:r,inputSampleRate:a,outputGain:s,channelMappingFamily:n,channelMappingTable:o}})(e.data);t.numberOfChannels=a.outputChannelCount,t.sampleRate=xi,t.codecInfo.opusInfo={preSkip:a.preSkip},Xt(r.data.subarray(8),this.metadataTags)}async readPacket(e,t){E(te+t.length,0);if(0===o)return null;const c=new Uint8Array(o);let l=0;for(let u=0;u{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(await Promise.all(this.trackBackings.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)))).filter(Boolean)})}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}class Ca{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new $,this.internalSampleRate="opus"===e.codecInfo.codec?xi:e.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){const e=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return E(-1!==e),e+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}async getDecoderConfig(){return E(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:this.bitstream.description??void 0}}getName(){return null}getLanguageCode(){return ue}getDisposition(){return{...Ge,primary:!1}}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(E(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,i){if(!e)return null;const{durationInSamples:r,vorbisBlockSize:a}=Ta(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new Wi(i.metadataOnly?qi:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,r/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:r,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:a}),s}async getFirstPacket(e){E(this.bitstream.lastMetadataPacket);const t=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(E(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const r=await this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(r,{timestampInSamples:i,vorbisLastBlocksize:null},e)}async getNextPacket(e,t){const i=this.encodedPacketToMetadata.get(e);if(!i)throw new Error("Packet was not created from this track.");const r=await this.demuxer.findNextPacketStart(i.packet);if(!r)return null;const a=i.timestampInSamples+i.durationInSamples,s=await this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:a,vorbisLastBlocksize:i.vorbisBlockSize},t)}async getPacket(e,t){if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const i=de(e*this.internalSampleRate);if(0===i)return this.getFirstPacket(t);if(i<0)return null;E(this.bitstream.lastMetadataPacket);const r=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!r)return null;let a=r.startPage,s=this.demuxer.reader.fileSize;const n=[a];e:for(;a.headerStartPos+a.totalSizei?s=l.headerStartPos:(a=l,n.push(l));continue e}r=l.headerStartPos+l.totalSize}}let o=r.startPage;for(const k of n){if(k.granulePosition===a.granulePosition)break;(!o||k.headerStartPos>o.headerStartPos)&&(o=k)}let c=o;const l=[c];for(;c.serialNumber!==this.bitstream.serialNumber||c.granulePosition!==a.granulePosition;){const e=c.headerStartPos+c.totalSize;let t=this.demuxer.reader.requestSliceRange(e,Sa,va);Re(t)&&(t=await t),E(t);const i=Pa(t);E(i),c=i,c.serialNumber===this.bitstream.serialNumber&&l.push(c)}E(-1!==c.granulePosition);let u,d,h=null,f=c,m=0;if(c.headerStartPos===r.startPage.headerStartPos)u=this.granulePositionToTimestampInSamples(0),d=!0,h=0;else{u=0,d=!1;for(let t=c.lacingValues.length-1;t>=0;t--){if(c.lacingValues[t]<255){h=t+1;break}}if(null===h)throw new Error("Invalid page with granule position: no packets end on this page.");m=h-1;const e={data:qi,endPage:f,endSegmentIndex:m};if(await this.demuxer.findNextPacketStart(e)){const e=Ea(l,c,h);E(e);const t=Ba(l,e.page,e.segmentIndex);t&&(c=t.page,h=t.segmentIndex)}else for(;;){const e=Ea(l,c,h);if(!e)break;const t=Ba(l,e.page,e.segmentIndex);if(!t)break;if(c=t.page,h=t.segmentIndex,e.page.headerStartPos!==f.headerStartPos){f=e.page,m=e.segmentIndex;break}}}let p=null,g=null;for(;null!==c;){E(null!==h);const e=await this.demuxer.readPacket(c,h);if(!e)break;if(!(c.headerStartPos===r.startPage.headerStartPos&&hi||Math.max(a.timestampInSamples,0)===i))break}const a=await this.demuxer.findNextPacketStart(e);if(!a)break;c=a.startPage,h=a.startSegmentIndex}return p}async getPacketSequential(e,t){const i=await this.sequentialScanMutex.acquire();try{const i=de(e*this.internalSampleRate);e=i/this.internalSampleRate;const r=Z(this.sequentialScanCache,i,e=>e.timestampInSamples);let a;if(-1!==r){const e=this.sequentialScanCache[r];a=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else a=await this.getFirstPacket(t);let s=0;for(;a&&a.timestampe)break;if(a=i,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(a);E(e),this.sequentialScanCache.length>0&&E(R(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return a}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Ba=(e,t,i)=>{let r=t,a=i;e:for(;;){for(a--;a>=0;a--){if(r.lacingValues[a]<255){a++;break e}}E(-1===a);if(!(1&r.headerType)){a=0;break}const t=re(e,e=>e.headerStartPos{if(i>0)return{page:t,segmentIndex:i-1};const r=re(e,e=>e.headerStartPos{let e=this.reader.requestSlice(0,12);Re(e)&&(e=await e),E(e);const t=rc(e,4),i="RIFX"!==t,r="RF64"===t,a=Xo(e,i);let s=r?this.reader.fileSize:Math.min(a+8,this.reader.fileSize??1/0);if("WAVE"!==rc(e,4))throw new Error("Invalid WAVE file - wrong format");let n=0,o=null,c=e.filePos;for(;null===s||c=18&&357!==a){const e=Ho(r,i),s=t-18;if(Math.min(s,e)>=22&&a===_a.EXTENSIBLE){r.skip(6);const e=qo(r,16);a=e[0]|e[1]<<8}}if(a!==_a.MULAW&&a!==_a.ALAW||(c=8),a!==_a.PCM&&a!==_a.IEEE_FLOAT&&a!==_a.ALAW&&a!==_a.MULAW)throw new Error(`Unsupported WAVE codec (format tag ${a}). Only integer/float PCM, A-law, and \u03bc-law are supported.`);if(a===_a.PCM&&![8,16,24,32].includes(c))throw new Error(`Unsupported WAVE PCM bit depth (${c}). Only 8, 16, 24, and 32 bits are supported.`);if(a===_a.IEEE_FLOAT&&![32,64].includes(c))throw new Error(`Unsupported WAVE float bit depth (${c}). Only 32 and 64 bits are supported.`);this.audioInfo={format:a,numberOfChannels:s,sampleRate:n,sampleSizeInBytes:Math.ceil(c/8),blockSizeInBytes:o}}async parseListChunk(e,t,i){var r,a,s,n,o,c,l,u,d,h,f;let m=this.reader.requestSlice(e,t);if(Re(m)&&(m=await m),!m)return;const p=rc(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=rc(m,4),t=Xo(m,i),p=qo(m,t);let k=0;for(let i=0;i0&&((c=this.metadataTags).trackNumber??(c.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((l=this.metadataTags).tracksTotal??(l.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||((u=this.metadataTags).date??(u.date=e))}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&((d=this.metadataTags).date??(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":(h=this.metadataTags).genre??(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":(f=this.metadataTags).comment??(f.comment=y)}g+=8+t+(1&t)}}async parseId3Chunk(e,t){let i=this.reader.requestSlice(e,t);if(Re(i)&&(i=await i),!i)return;const r=mc(i);if(r){const a=t-uc;if(r.size=Math.min(r.size,a),r.size>0){const t=i.slice(e+uc,r.size);pc(t,r,this.metadataTags)}}}getCodec(){if(E(this.audioInfo),this.audioInfo.format===_a.MULAW)return"ulaw";if(this.audioInfo.format===_a.ALAW)return"alaw";if(this.audioInfo.format===_a.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}if(this.audioInfo.format===_a.IEEE_FLOAT){if(4===this.audioInfo.sampleSizeInBytes)return"pcm-f32";if(8===this.audioInfo.sampleSizeInBytes)return"pcm-f64"}E(!1)}async getMimeType(){return"audio/wav"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}const Aa=2048;class Da{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.format}async getDecoderConfig(){const e=this.demuxer.getCodec();return e?(E(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null}getNumberOfChannels(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return E(-1!==this.demuxer.dataSize),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return ue}getDisposition(){return{...Ge}}async getPacketAtIndex(e,t){E(e>=0),E(this.demuxer.audioInfo);const i=e*Aa*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const r=Math.min(Aa*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);if(Re(e)&&(e=await e),!e)return null}let a;if(t.metadataOnly)a=qi;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);Re(e)&&(e=await e),E(e),a=qo(e,r)}const s=e*Aa/this.demuxer.audioInfo.sampleRate,n=r/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,this.demuxer.lastKnownPacketIndex),new Wi(a,"key",s,n,e,r)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getPacket(e,t){E(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/Aa,(this.demuxer.dataSize-1)/(Aa*this.demuxer.audioInfo.blockSizeInBytes)));if(i<0)return null;const r=await this.getPacketAtIndex(i,t);if(r)return r;if(0===i)return null;E(null===this.demuxer.reader.fileSize);let a=await this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;a;){const e=await this.getNextPacket(a,t);if(!e)break;a=e}return a}getNextPacket(e,t){E(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/Aa);return this.getPacketAtIndex(i+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Ma=e=>{const t=e.filePos,i=qo(e,9),r=new Qe(i);if(4095!==r.readBits(12))return null;r.skipBits(1);if(0!==r.readBits(2))return null;const a=r.readBits(1),s=r.readBits(2)+1,n=r.readBits(4);if(15===n)return null;r.skipBits(1);const o=r.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);const c=r.readBits(13);r.skipBits(11);const l=r.readBits(2)+1;if(1!==l)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===a?e.filePos-=2:u=r.readBits(16),{objectType:s,samplingFrequencyIndex:n,channelConfiguration:o,frameLength:c,numberOfAacFrames:l,crcCheck:u,startPos:t}},Na=1024;class Oa extends Ui{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.trackBackings=[],this.readingMutex=new $,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();E(this.firstFrameHeader),this.trackBackings=[new za(this)]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,uc);if(Re(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=mc(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(Re(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=Ma(e);if(!t)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&t.startPos+t.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=t);const i=Ye[t.samplingFrequencyIndex];E(void 0!==i);const r=Na/i,a={timestamp:this.nextTimestampInSamples/i,duration:r,dataStart:t.startPos,dataSize:t.frameLength};this.loadedSamples.push(a),this.nextTimestampInSamples+=Na,this.lastLoadedPos=t.startPos+t.frameLength}async getMimeType(){return"audio/aac"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0;for(;;){let t=this.reader.requestSlice(e,uc);if(Re(t)&&(t=await t),!t)break;const i=mc(t);if(!i)break;let r=this.reader.requestSlice(t.filePos,i.size);if(Re(r)&&(r=await r),!r)break;pc(r,i,this.metadataTags),e=t.filePos+i.size}return this.metadataTags}finally{e()}}}class za{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/Na}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return ue}getCodec(){return"aac"}getInternalCodecId(){return E(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){E(this.demuxer.firstFrameHeader);const e=Je[this.demuxer.firstFrameHeader.channelConfiguration];return E(void 0!==e),e}getSampleRate(){E(this.demuxer.firstFrameHeader);const e=Ye[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return E(void 0!==e),e}getDisposition(){return{...Ge}}async getDecoderConfig(){return E(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}}async getPacketAtIndex(e,t){if(-1===e)return null;const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=qi;else{let e=this.demuxer.reader.requestSlice(i.dataStart,i.dataSize);if(Re(e)&&(e=await e),!e)return null;r=qo(e,i.dataSize)}return new Wi(r,"key",i.timestamp,i.duration,e,i.dataSize)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getNextPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{const i=J(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}}async getPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=Z(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1{var e;let t=0;for(;;){let e=this.reader.requestSlice(t,uc);if(Re(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const i=mc(e);if(!i)break;let r=this.reader.requestSlice(e.filePos,i.size);Re(r)&&(r=await r),E(r),pc(r,i,this.metadataTags),t=e.filePos+i.size}for(t+=4;null===this.reader.fileSize||ts.end-6)return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:s.end-e,isLastFrame:!0};if(255===Wo(s)){const t=s.filePos;if(Wo(s)!==(1===this.blockingBit?249:248)){s.filePos=t;continue}s.skip(-2);const i=s.filePos-e,r=this.readFlacFrameHeader({slice:s,isFirstPacket:!1});if(!r){s.filePos=t;continue}if(0===this.blockingBit){if(r.num-n.num!==1){s.filePos=t;continue}}else if(r.num-n.num!==n.blockSize){s.filePos=t;continue}return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:i,isLastFrame:!1}}}}readFlacFrameHeader({slice:e,isFirstPacket:t}){const i=e.filePos,r=qo(e,4),a=new Qe(r);if(32764!==a.readBits(15))return null;if(null===this.blockingBit){E(t);const e=a.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){E(!t);if(1!==a.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");E(!t);if(0!==a.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*2**e:6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?2**e:null)(a.readBits(4));if(!s)return null;E(this.audioInfo);const n=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(a.readBits(4),this.audioInfo.sampleRate);if(!n)return null;a.readBits(4),a.readBits(3);if(0!==a.readBits(1))return null;const o=(e=>{let t=0;const i=new Qe(qo(e,1));for(;1===i.readBits(1);)t++;if(0===t)return i.readBits(7);const r=[],a=t-1,s=new Qe(qo(e,a)),n=8-t-1;for(let o=0;oe|t<"uncommon-u16"===t?Vo(e)+1:"uncommon-u8"===t?Wo(e)+1:"number"===typeof t?t:(se(t),void E(!1)))(e,s),l=((e,t)=>"uncommon-u16"===t?Vo(e):"uncommon-u16-10"===t?10*Vo(e):"uncommon-u8"===t?Wo(e):"number"===typeof t?t:null)(e,n);if(null===l)return null;if(l!==this.audioInfo.sampleRate)return null;const u=e.filePos-i,d=Wo(e);e.skip(-u),e.skip(-1);const h=(e=>{let t=0;for(const i of e){t^=i;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(qo(e,u));return d!==h?null:{num:o,blockSize:c,sampleRate:l}}async advanceReader(){await this.readMetadata(),E(null!==this.lastLoadedPos),E(this.audioInfo);const e=this.lastLoadedPos,t=await this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],r={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(r),t.isLastFrame&&(this.lastSampleLoaded=!0)}}class Ua{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return ue}getTimeResolution(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return E(this.demuxer.audioInfo),0===this.demuxer.audioInfo.totalSamples?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getDisposition(){return{...Ge}}async getDecoderConfig(){return E(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}}async getPacket(e,t){if(E(this.demuxer.audioInfo),e<0)return null;const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=Z(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===i){await this.demuxer.advanceReader();continue}const r=this.demuxer.loadedSamples[i],a=r.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(a+r.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(i,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);await this.demuxer.advanceReader()}}finally{i()}}async getNextPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{const i=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}async getPacketAtIndex(e,t){const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=qi;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(Re(e)&&(e=await e),!e)return null;r=qo(e,i.byteSize)}E(this.demuxer.audioInfo);const a=i.blockOffset/this.demuxer.audioInfo.sampleRate,s=i.blockSize/this.demuxer.audioInfo.sampleRate;return new Wi(r,"key",a,s,e,i.byteSize)}async getFirstPacket(e){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)}}const qa=9e4,Wa=2**33,Ha=188,Va="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",ja=new Set([133,134,162]),Ka=new Set;class Xa extends Ui{constructor(e){super(e),this.metadataPromise=null,this.elementaryStreams=[],this.trackBackingEntries=[],this.packetOffset=0,this.packetStride=-1,this.sectionEndPositions=[],this.seekChunkSize=5242880,this.minReferencePointByteDistance=-1,this.timestampWrapInfo=null,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=this.reader.requestSlice(0,205);Re(e)&&(e=await e),E(e);const t=qo(e,205);if(71===t[0]&&71===t[188])this.packetOffset=0,this.packetStride=Ha;else if(71===t[0]&&71===t[204])this.packetOffset=0,this.packetStride=204;else{if(71!==t[4]||71!==t[196])throw new Error("Unreachable.");this.packetOffset=4,this.packetStride=192}this.minReferencePointByteDistance=256*this.packetStride;let i=this.packetOffset,r=null,a=!1,s=!1;for(;;){const e=await this.readPacketHeader(i);if(!e)break;if(0===e.payloadUnitStartIndicator){i+=this.packetStride;continue}if(s&&!this.elementaryStreams.some(t=>t.pid===e.pid)){i+=this.packetStride;continue}const t=await this.readSection(i,!0,!s);if(!t)break;const n=3,o=32;let c=!1;if(!s&&0!==t.pid){if(!(0===t.payload[0]&&0===t.payload[1]&&1===t.payload[2])){const e=new Qe(t.payload),i=e.readAlignedByte();e.skipBits(8*i);c=2===e.readBits(8)}}if(0!==t.pid||a)if(t.pid!==r&&!c||s){const e=this.elementaryStreams.find(e=>e.pid===t.pid);e:if(e&&!e.initialized){const i=Ga(this,t,!0);if(!i)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${e.pid}`);if(e.firstSection=t,e.canBeTrustedWithKeyPackets=1===t.randomAccessIndicator,this.input._initInput){const i=(await this.input._initInput._getDemuxer()).elementaryStreams.find(i=>i.pid===t.pid&&i.info.codec===e.info.codec);if(i){e.info=i.info,e.initialized=!0;break e}}const r=new es(e,i);if("video"===e.info.type){for(;;){if(r.suppliedPacket=null,await r.markNextPacket(),"avc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(e.info.avcCodecInfo=gt(r.suppliedPacket.data),!e.info.avcCodecInfo)continue;const t=e.info.avcCodecInfo.sequenceParameterSets[0];E(t);const i=wt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight;const a=i.pixelAspectRatio.num,s=i.pixelAspectRatio.den;a>0&&s>0&&(a>s?(e.info.squarePixelWidth=Math.round(e.info.width*a/s),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*s/a))),e.info.colorSpace={primaries:U[i.colourPrimaries],transfer:W[i.transferCharacteristics],matrix:V[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}if("hevc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(e.info.hevcCodecInfo=xt(r.suppliedPacket.data),!e.info.hevcCodecInfo)continue;const t=e.info.hevcCodecInfo.arrays.find(e=>e.nalUnitType===nt.SPS_NUT).nalUnits[0];E(t);const i=It(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight,i.pixelAspectRatio.num>i.pixelAspectRatio.den?(e.info.squarePixelWidth=Math.round(e.info.width*i.pixelAspectRatio.num/i.pixelAspectRatio.den),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*i.pixelAspectRatio.den/i.pixelAspectRatio.num)),e.info.colorSpace={primaries:U[i.colourPrimaries],transfer:W[i.transferCharacteristics],matrix:V[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}throw new Error("Unhandled.")}e.info.decoderConfig={codec:vi({width:e.info.width,height:e.info.height,codec:e.info.codec,codecDescription:null,colorSpace:e.info.colorSpace,avcType:1,avcCodecInfo:e.info.avcCodecInfo,hevcCodecInfo:e.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null,proresFormat:null}),codedWidth:e.info.width,codedHeight:e.info.height,colorSpace:e.info.colorSpace},e.info.width===e.info.squarePixelWidth&&e.info.height===e.info.squarePixelHeight||(e.info.decoderConfig.displayAspectWidth=e.info.squarePixelWidth,e.info.decoderConfig.displayAspectHeight=e.info.squarePixelHeight),e.initialized=!0}else{if(await r.markNextPacket(),!r.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${e.pid}`);if("aac"===e.info.codec){const t=Lo.tempFromBytes(r.suppliedPacket.data),i=Ma(t);if(!i)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");e.info.aacCodecInfo={isMpeg2:!1,objectType:i.objectType},e.info.numberOfChannels=Je[i.channelConfiguration],e.info.sampleRate=Ye[i.samplingFrequencyIndex]}else if("mp3"===e.info.codec){const t=$o(Lo.tempFromBytes(r.suppliedPacket.data)),i=Mi(t,r.suppliedPacket.data.byteLength);if(!i.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");e.info.numberOfChannels=Li(i.header.channel),e.info.sampleRate=i.header.sampleRate}else if("ac3"===e.info.codec){const t=Gt(r.suppliedPacket.data);if(!t)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(3===t.fscod)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=$t[t.acmod]+t.lfeon,e.info.sampleRate=it[t.fscod]}else if("eac3"===e.info.codec){const t=Jt(r.suppliedPacket.data);if(!t)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");const i=Zt(t);if(null===i)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=ei(t),e.info.sampleRate=i}else{if("dts"!==e.info.codec)throw new Error("Unhandled.");{const t=li(r.suppliedPacket.data);if(!t)throw new Error("Invalid DTS audio stream; could not read frame header from first packet.");e.info.numberOfChannels=t.numberOfChannels,e.info.sampleRate=t.sampleRate,t.core&&(e.info.dtsFormat=t.hasExtensions?"dtsh":"dtsc")}}e.info.decoderConfig={codec:Ii({codec:e.info.codec,codecDescription:null,aacCodecInfo:e.info.aacCodecInfo,dtsFormat:e.info.dtsFormat}),numberOfChannels:e.info.numberOfChannels,sampleRate:e.info.sampleRate},e.initialized=!0}}}else{const e=new Qe(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(12);const r=e.readBits(12);e.skipBits(43),e.readBits(13),e.skipBits(6);const a=e.readBits(10),c=e.pos+8*a;let l=!1;for(;e.pos=4){const t=e.readBits(32);l||(l=1212435798===t||1212436562===t)}e.pos=r}for(e.pos=c;8*(r+n)-e.pos>o;){const t=e.readBits(8);e.skipBits(3);const i=e.readBits(13);e.skipBits(6);const r=e.readBits(10),a=e.pos+8*r;let s=!1,n=!1,o=!1;for(;e.pos=4){const t=e.readBits(32);o||(o=1146376960===(4294967040&t))}e.pos=r}let c=null;const u=l&&ja.has(t)?130:t;switch(u){case 27:case 36:c={type:"video",codec:27===t?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:case 130:case 138:{let e;e=3===u||4===u?"mp3":15===u?"aac":129===u?"ac3":135===u?"eac3":"dts",c={type:"audio",codec:e,decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:n?c={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:s?c={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:o&&(c={type:"audio",codec:"dts",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1});break;default:Ka.has(t)||(Ke._warn(`Note: MPEG-TS streams with stream_type 0x${t.toString(16)} are not currently supported.`),Ka.add(t))}c&&this.elementaryStreams.push({demuxer:this,pid:i,streamType:t,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:c,referencePesPackets:[]})}s=!0}else{const e=new Qe(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(14);const s=e.readBits(10);for(e.skipBits(40);8*(s+n)-e.pos>o;){const t=e.readBits(16);e.skipBits(3);const i=e.readBits(13);if(0!==t){if(null!==r)throw new Error("Only files with a single program are supported.");r=i}}if(null===r)throw new Error("Program Association Table must link to a Program Map Table.");a=!0}if(s&&this.elementaryStreams.every(e=>e.initialized))break;i+=this.packetStride}if(!s){if(!a)throw new Error("No Program Association Table found in the file.");throw new Error("No Program Map Table found in the file.")}for(const n of this.elementaryStreams)n.initialized&&("video"===n.info.type?this.trackBackingEntries.push(new Ya(n)):this.trackBackingEntries.push(new Ja(n)))})())}async getTrackBackings(){return await this.readMetadata(),this.trackBackingEntries}async getMetadataTags(){return{}}async getMimeType(){await this.readMetadata();return(e=>{let t="video/MP2T";const i=[...new Set(e.filter(Boolean))];return i.length>0&&(t+=`; codecs="${i.join(", ")}"`),t})(await Promise.all(this.trackBackingEntries.map(e=>e.getDecoderConfig().then(e=>e?.codec??null))))}async readSection(e,t,i=!1){let r=e,a=e;const s=[];let n,o=0,c=null,l=!0,u=0;for(;;){const e=await this.readPacket(a);if(a+=this.packetStride,!e)break;if(c){if(e.pid!==c.pid){if(i)break;continue}if(1===e.payloadUnitStartIndicator)break}else{if(0===e.payloadUnitStartIndicator)break;c=e}const n=!!(2&e.adaptationFieldControl),d=!!(1&e.adaptationFieldControl);let h=0;if(n&&(h=1+e.body[0],e===c&&h>1&&(u=e.body[1]>>6&1)),d&&(0===h?(s.push(e.body),o+=e.body.byteLength):(s.push(e.body.subarray(h)),o+=e.body.byteLength-h)),r=a,!t&&o>=64){l=!1;break}if(-1!==J(this.sectionEndPositions,r,e=>e)){l=!1;break}}if(l){const e=Z(this.sectionEndPositions,r,e=>e);this.sectionEndPositions.splice(e+1,0,r)}if(!c)return null;if(1===s.length)n=s[0];else{const e=s.reduce((e,t)=>e+t.length,0);n=new Uint8Array(e);let t=0;for(const i of s)n.set(i,t),t+=i.length}return{startPos:e,endPos:t?r:null,pid:c.pid,payload:n,randomAccessIndicator:u}}async readPacketHeader(e){let t=this.reader.requestSlice(e,4);if(Re(t)&&(t=await t),!t)return null;if(71!==Wo(t))throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const i=Vo(t);return{payloadUnitStartIndicator:i>>14&1,pid:8191&i,adaptationFieldControl:Wo(t)>>4&3}}async readPacket(e){let t=this.reader.requestSlice(e,Ha);if(Re(t)&&(t=await t),!t)return null;const i=qo(t,Ha);if(71!==i[0])throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const r=(i[1]<<8)+i[2];return{payloadUnitStartIndicator:r>>14&1,pid:8191&r,adaptationFieldControl:i[3]>>4&3,body:i.subarray(4)}}normalizeTimestamp(e){if(!this.timestampWrapInfo){const t=54e5;this.timestampWrapInfo={reference:e-t,offset:e>=Wa-t?-8589934592:Wa}}const{reference:t,offset:i}=this.timestampWrapInfo;return i<0&&e>=t||i>0&&e{if(t.payload.byteLength<3)return null;const r=new Qe(t.payload);if(1!==r.readBits(24))return null;const a=r.readBits(8);if(r.skipBits(16),188===a||190===a||191===a||240===a||241===a||255===a||242===a||248===a)return null;r.skipBits(8);const s=r.readBits(2);r.skipBits(14);let n=null;if(2===s||3===s)n=0,r.skipBits(4),n+=r.readBits(3)*(1<<30),r.skipBits(1),n+=32768*r.readBits(15),r.skipBits(1),n+=r.readBits(15),n=e.normalizeTimestamp(n);else if(i)throw new Error(Va);return{sectionStartPos:t.startPos,sectionEndPos:t.endPos,pts:n,randomAccessIndicator:t.randomAccessIndicator}},Ga=(e,t,i)=>{E(null!==t.endPos);const r=$a(e,t,i);if(!r)return null;const a=new Qe(t.payload);a.skipBits(32);const s=a.readBits(16);a.skipBits(16);const n=a.readBits(8),o=a.pos+8*n;a.pos=o;const c=o/8;E(Number.isInteger(c));const l=t.payload.subarray(c,s>0?6+s:t.payload.byteLength);return{...r,data:l}};class Qa{constructor(e){this.elementaryStream=e,this.packetBuffers=new WeakMap,this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){const e=this.elementaryStream.demuxer,t=this.elementaryStream.info.type;let i=0;for(const r of e.trackBackingEntries)if(r.getType()===t&&i++,E(r instanceof Qa),r.elementaryStream===this.elementaryStream)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return ue}getDisposition(){return{...Ge,primary:!1}}getTimeResolution(){return qa}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}createEncodedPacket(e,t,i){let r;return r=this.allPacketsAreKeyPackets()||1===e.randomAccessIndicator?"key":"delta",new Wi(i.metadataOnly?qi:e.data,r,e.pts/qa,Math.max(t/qa,0),e.sequenceNumber,e.data.byteLength)}async getFirstPacket(e){const t=this.elementaryStream.firstSection;E(t);const i=Ga(this.elementaryStream.demuxer,t,!0);E(i);const r=new es(this.elementaryStream,i),a=new ts(this,r),s=await a.readNext();if(!s)return null;const n=this.createEncodedPacket(s.packet,s.duration,e);return this.packetBuffers.set(n,a),this.packetSectionStarts.set(n,s.packet.sectionStartPos),n}async getNextPacket(e,t){let i=this.packetBuffers.get(e);if(i){const r=await i.readNext();if(!r)return null;this.packetBuffers.delete(e);const a=this.createEncodedPacket(r.packet,r.duration,t);return this.packetBuffers.set(a,i),this.packetSectionStarts.set(a,r.packet.sectionStartPos),a}const r=this.packetSectionStarts.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");const a=this.elementaryStream.demuxer,s=await a.readSection(r,!0);E(s);const n=Ga(a,s,!0);E(n);const o=new es(this.elementaryStream,n);i=new ts(this,o);const c=e.sequenceNumber;for(;;){const e=await i.readNext();if(!e)return null;if(e.packet.sequenceNumber>c){const r=this.createEncodedPacket(e.packet,e.duration,t);return this.packetBuffers.set(r,i),this.packetSectionStarts.set(r,e.packet.sectionStartPos),r}}}async getNextKeyPacket(e,t){let i=e;for(;;){if(i=await this.getNextPacket(i,t),!i)return null;if("key"===i.type)return i}}getPacket(e,t){return this.doPacketLookup(e,!1,t)}getKeyPacket(e,t){return this.doPacketLookup(e,!0,t)}async doPacketLookup(e,t,i){const r=de(e*qa),a=this.elementaryStream.demuxer,{reader:s,seekChunkSize:n}=a,o=this.elementaryStream.pid,c=async(e,t,i)=>{let r=e;for(;re.pts),m=-1!==f?h[f]:null;if(m&&r-m.pts<45e3)d=m.sectionStartPos;else{let e=0;if(null!==s.fileSize){const t=Math.ceil(s.fileSize/n);if(t>1){let i=0,s=t-1;for(e=i;i<=s;){const t=Math.floor((i+s)/2),o=me(t*n,a.packetStride)+u.sectionStartPos,l=o+n,d=await c(o,l,!1);d?d.pesPacketHeader.pts<=r?(e=t,i=t+1):s=t-1:s=t-1}}}d=me(e*n,a.packetStride)+u.sectionStartPos}const p=await c(d,s.fileSize??1/0,!1);let g=p?.pesPacketHeader??null;g||(g=u);const k=this.getReorderSize(),y=async(e,t)=>{const s=await a.readSection(e,!0);E(s);const n=Ga(a,s,!0);E(n);const o=new es(this.elementaryStream,n),c=new ts(this,o);for(;;){if((R(c.presentationOrderPackets)?.pts??-1/0)>=r)break;if(!(await c.readNextPacket()))break}const l=ae(c.presentationOrderPackets,t);if(-1===l)return null;const u=c.presentationOrderPackets[l],d=0===l?0:u.pts-c.presentationOrderPackets[l-1].pts;for(;c.decodeOrderPackets[0]!==u;)c.decodeOrderPackets.shift();c.lastDuration=d;const h=await c.readNext();E(h);const f=this.createEncodedPacket(h.packet,h.duration,i);return this.packetBuffers.set(f,c),this.packetSectionStarts.set(f,h.packet.sectionStartPos),f};if(!t||this.allPacketsAreKeyPackets()){e:for(;;){let e=g.sectionStartPos+a.packetStride;for(;;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,!1);if(t){const e=$a(a,t,!1);if(e&&null!==e.pts){if(e.pts>r)break e;g=e,Za(this.elementaryStream,g);break}}}e+=a.packetStride}}e:for(let e=0;e=a.packetOffset;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,!1);if(t){const e=$a(a,t,!1);if(e&&null!==e.pts){g=e;break}}}e-=a.packetStride}}return y(g.sectionStartPos,e=>e.pts<=r)}{let e=d,t=null;const i=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let d=null;const h=e<=u.sectionStartPos;let f,m=null;if(h)f=u,m=l;else{const t=await c(e,s.fileSize??1/0,i);f=t?.pesPacketHeader??null,m=t?.section??null}let p=!1,g=0;e:for(;f&&!(null!==t&&f.sectionStartPos>=t);){if(f.pts<=r){let e;if(this.elementaryStream.canBeTrustedWithKeyPackets)e=1===f.randomAccessIndicator;else{E(m);const t=Ga(a,m,!0);E(t);const i=new es(this.elementaryStream,t);await i.markNextPacket(),e=1===i.suppliedPacket?.randomAccessIndicator}e&&(d=f)}if(f.pts>r&&(p=!0),p&&(g++,g>k))break;let e=f.sectionStartPos+a.packetStride;for(;;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,i);if(t){const e=$a(a,t,!1);if(e&&null!==e.pts){f=e,m=t,Za(this.elementaryStream,f);break}}}e+=a.packetStride}}if(d){let e=d;if(0===g)e:for(let r=0;r=a.packetOffset;){const r=await a.readPacketHeader(t);if(!r)break e;if(r.pid===o&&1===r.payloadUnitStartIndicator){const r=await a.readSection(t,i);if(r){const t=$a(a,r,!1);if(t&&null!==t.pts){e=t;break}}}t-=a.packetStride}}const t=await y(e.sectionStartPos,e=>e.pts<=r&&1===e.randomAccessIndicator);return E(t),t}if(h)return null;t=e,e=Math.max(me(e-u.sectionStartPos-n,a.packetStride)+u.sectionStartPos,u.sectionStartPos)}}}}class Ya extends Qa{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}async getColorSpace(){return this.elementaryStream.info.colorSpace}async canBeTransparent(){return!1}async getDecoderConfig(){return E(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}}class Ja extends Qa{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}async getDecoderConfig(){return E(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}}const Za=(e,t)=>{const i=e.referencePesPackets,r=Z(i,t.sectionStartPos,e=>e.sectionStartPos);if(r>=0){const a=i[r];if(t.pts<=a.pts)return!1;const s=e.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-a.sectionStartPos=e?e:this.bufferData(e-t).then(()=>Math.min(this.endPos-this.currentPos,e))}getCurrentPesPacket(){const e=this.pesPackets[this.currentPesPacketIndex];return E(e),e}async bufferData(e){const t=this.endPos+e;for(;this.endPos=l)break;u=e;const i=o+u;if(u+3>=l){this.seekTo(i);break}const d=c[u+1],h=c[u+2],f=c[u+3];let m=0;if(0===d&&0===h&&1===f?m=4:0===d&&1===h&&(m=3),0===m){u++;continue}const p=i;a??(a=p);const g=u+m,k=g+r,y=6;if(k+("avc"===t?y:1)>l){this.seekTo(i);break}const b=c[g];let w,T,S;if("avc"===t)w=dt(b),T=w===at.NON_IDR_SLICE||w===at.SLICE_DPA||w===at.IDR,S=w===at.SEI||w===at.SPS||w===at.PPS||w===at.AUD;else{w=Pt(b);if(((1&b)<<5|c[g+1]>>3)>0){u+=m;continue}T=w<=nt.RASL_R||w>=nt.BLA_W_LP&&w<=21,S=w>=nt.VPS_NUT&&w<=37||w===nt.PREFIX_SEI_NUT||w>=41&&w<=44||w>=48&&w<=55}let v=!1;if(T){let e;if("avc"===t){const t=c.subarray(k,k+y),i=F(new Qe(t));e=!s||i<=n,n=i}else e=c[k]>>7===1;e&&(s?v=!0:s=!0)}else S&&s&&(v=!0);if(v){const e=p-a;return this.seekTo(a),this.supplyPacket(e,0)}u+=m}if(ea){const e=this.endPos-a;return this.seekTo(a),this.supplyPacket(e,0)}}else{const t=e.info.codec,i=128;for(;;){let r=this.ensureBuffered(i);Re(r)&&(r=await r);const a=this.currentPos;for(;this.currentPos-a>6,n=63&a[4];if(3===s||n>37){this.seekTo(t+1);continue}const o=Qt[3*n+s];E(void 0!==o),this.seekTo(t),r=this.ensureBuffered(o),Re(r)&&(r=await r);const c=Math.round(13824e4/e.info.sampleRate);return this.supplyPacket(r,c)}if("eac3"===t){if(11!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(5);if(Re(r)&&(r=await r),r<5)return;const a=this.readBytes(5);if(11!==a[0]||119!==a[1]){this.seekTo(t+1);continue}const s=2*(((7&a[2])<<8|a[3])+1),n=3===a[4]>>6?3:a[4]>>4&3,o=Yt[n];this.seekTo(t),r=this.ensureBuffered(s),Re(r)&&(r=await r);const c=256*o,l=Math.round(c*qa/e.info.sampleRate);return this.supplyPacket(r,l)}if("dts"===t){if(127!==i&&100!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(18);if(Re(r)&&(r=await r),r<18)return;const a=this.readBytes(18),s=di(a);let n=s?null:hi(a);if(!s&&!n){this.seekTo(t+1);continue}if(n&&!n.asset){this.seekTo(t);const e=Math.min(n.frameSize,4096);let i=this.ensureBuffered(e);Re(i)&&(i=await i),n=hi(this.readBytes(i))??n}let o=s?s.frameSize:n.frameSize;if(s){let e=4*Math.ceil(s.frameSize/4);for(;;){this.seekTo(t);const i=e+10;let r=this.ensureBuffered(i);if(Re(r)&&(r=await r),r=0)}async readNext(){if(0===this.decodeOrderPackets.length){if(!(await this.readNextPacket()))return null}await this.ensureCurrentPacketHasNext();const e=this.decodeOrderPackets[0],t=this.presentationOrderPackets.indexOf(e);let i;if(E(-1!==t),t===this.presentationOrderPackets.length-1)i=this.lastDuration;else{i=this.presentationOrderPackets[t+1].pts-e.pts,this.lastDuration=i}for(this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){const e=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(e))break;this.presentationOrderPackets.shift()}return{packet:e,duration:i}}async readNextPacket(){if(this.reachedEnd)return!1;let e;return this.context.suppliedPacket||await this.context.markNextPacket(),e=this.context.suppliedPacket,this.context.suppliedPacket=null,e?(this.decodeOrderPackets.push(e),this.processPacketThroughReorderBuffer(e),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)}async ensureCurrentPacketHasNext(){const e=this.decodeOrderPackets[0];for(E(e);;){const t=this.presentationOrderPackets.indexOf(e);if(-1!==t&&t<=this.presentationOrderPackets.length-2)break;if(!(await this.readNextPacket()))break}}processPacketThroughReorderBuffer(e){if(this.reorderBuffer.push(e),this.reorderBuffer.length>this.reorderSize){let e=0;for(let i=1;ie.pts-t.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}}const is="application/vnd.apple.mpegurl",rs="#EXT-X-STREAM-INF:",as="#EXT-X-I-FRAME-STREAM-INF:",ss="#EXT-X-MEDIA:",ns="#EXTINF:",os="#EXT-X-MAP:",cs="#EXT-X-KEY:",ls="#EXT-X-MEDIA-SEQUENCE:",us="#EXT-X-BYTERANGE:",ds="#EXT-X-PROGRAM-DATE-TIME:",hs="#EXT-X-TARGETDURATION:",fs="#EXT-X-PLAYLIST-TYPE:",ms=e=>0===e.length||e.startsWith("#")&&!e.startsWith("#EXT");class ps{constructor(e){this._attributes={};let t="",i="",r=!1,a=!1;for(let s=0;s{const e=[];if(this.trackDeclarations){for(const t of this.trackDeclarations)if("video"===t.type){const i=ze(e,e=>"video"===e.getType())+1;e.push(new ys(this,t,i))}else if("audio"===t.type){const i=ze(e,e=>"audio"===e.getType())+1;e.push(new bs(this,t,i))}}else{if(this.firstSegment=await this.getFirstSegment({}),!this.firstSegment)return[];const t=this.getInputForSegment(this.firstSegment),i=await t.getTracks();for(const r of i)if("video"===r.type){const t=ze(e,e=>"video"===e.getType())+1;e.push(new ys(this,{id:e.length+1,type:"video"},t))}else if("audio"===r.type){const t=ze(e,e=>"audio"===e.getType())+1;e.push(new bs(this,{id:e.length+1,type:"audio"},t))}}return e})())}async getFirstTimestampForInput(e){const t=this.firstTimestampCache.get(e);if(void 0!==t)return t;const i=await e.getFirstTimestamp();return this.firstTimestampCache.set(e,i),i}async getMediaOffset(e,t){const i=e.firstSegment??e;let r;if(this.firstSegmentFirstTimestamps.has(i))r=this.firstSegmentFirstTimestamps.get(i);else{const e=this.getInputForSegment(i);r=await this.getFirstTimestampForInput(e),this.firstSegmentFirstTimestamps.set(i,r)}if(i===e)return i.timestamp-r;const a=await this.getFirstTimestampForInput(t),s=e.timestamp-i.timestamp,n=a-r-s;return Math.abs(n)<=Math.min(.25,s)?i.timestamp-r:e.timestamp-a}dispose(){for(const e of this.inputCache)e.input.dispose();this.inputCache.length=0}}class ks{constructor(e,t,i){this.packetInfos=new WeakMap,this.hydrationPromise=null,this.firstInputTrack=null,this.firstSegment=null,this.segmentedInput=e,this.decl=t,this.number=i}hydrate(){return this.hydrationPromise??(this.hydrationPromise=(async()=>{var e;if((e=this.segmentedInput).firstSegment??(e.firstSegment=await this.segmentedInput.getFirstSegment({})),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let t=this.segmentedInput.firstSegment,i=null;for(;t;){const e=this.segmentedInput.getInputForSegment(t);if(i=(await e.getTracks()).find(e=>e.type===this.decl.type&&e.number===this.number)??null,i)break;t=await this.segmentedInput.getNextSegment(t,{})}if(!i)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=i,this.firstSegment=t})())}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(e){return this.firstInputTrack?e():this.hydrate().then(e)}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}getHasOnlyKeyPackets(){return this.delegate(()=>this.firstInputTrack._backing.getHasOnlyKeyPackets?.()??null)}getPairingMask(){return 1n}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}async isRelativeToUnixEpoch(){return await this.hydrate(),E(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.unixEpochTimestamp===this.segmentedInput.firstSegment.timestamp}getUnixTimeForTimestamp(e){return this.segmentedInput.getUnixTimeForTimestamp(e)}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(e){return this.segmentedInput.getDurationFromMetadata(e)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}async createAdjustedPacket(e,t,i){E(e.sequenceNumber>=0),E(this.segmentedInput.firstSegment);const r=await this.segmentedInput.getMediaOffset(t,i.input),a=t.timestamp-this.segmentedInput.firstSegment.timestamp,s=e.clone({timestamp:fe(e.timestamp+r,await i.getTimeResolution()),sequenceNumber:Math.floor(1e8*a)+e.sequenceNumber});return this.packetInfos.set(s,{segment:t,track:i,sourcePacket:e}),s}async getFirstPacket(e){await this.hydrate(),E(this.firstInputTrack),E(this.firstSegment);let t=this.firstInputTrack,i=this.firstSegment;for(;;){if(t){const r=await t._backing.getFirstPacket(e);if(r)return this.createAdjustedPacket(r,i,t)}if(i=await this.segmentedInput.getNextSegment(i,{skipLiveWait:e.skipLiveWait}),!i)break;const r=this.segmentedInput.getInputForSegment(i);t=(await r.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number)??null}return null}getNextPacket(e,t){return this._getNextInternal(e,t,!1)}getNextKeyPacket(e,t){return this._getNextInternal(e,t,!0)}async _getNextInternal(e,t,i){const r=this.packetInfos.get(e);if(!r)throw new Error("Packet was not created from this track.");const a=i?await r.track._backing.getNextKeyPacket(r.sourcePacket,t):await r.track._backing.getNextPacket(r.sourcePacket,t);if(a)return this.createAdjustedPacket(a,r.segment,r.track);let s=r.segment;for(;;){const e=await this.segmentedInput.getNextSegment(s,{skipLiveWait:t.skipLiveWait});if(!e)return null;const i=this.segmentedInput.getInputForSegment(e),a=(await i.getTracks()).find(e=>e.type===r.track.type&&e.number===r.track.number);if(!a){s=e;continue}const n=await a._backing.getFirstPacket(t);return n?this.createAdjustedPacket(n,e,a):null}}getPacket(e,t){return this._getPacketInternal(e,t,!1)}getKeyPacket(e,t){return this._getPacketInternal(e,t,!0)}async _getPacketInternal(e,t,i){let r=await this.segmentedInput.getSegmentAt(e,{skipLiveWait:t.skipLiveWait});if(!r)return null;for(await this.hydrate();r;){const a=this.segmentedInput.getInputForSegment(r),s=(await a.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number);if(!s){r=await this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait});continue}const n=e-await this.segmentedInput.getMediaOffset(r,a),o=i?await s._backing.getKeyPacket(n,t):await s._backing.getPacket(n,t);if(o)return this.createAdjustedPacket(o,r,s);r=await this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait})}return null}}class ys extends ks{getType(){return"video"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getCodedWidth(){return this.delegate(()=>this.firstInputTrack._backing.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.firstInputTrack._backing.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelHeight())}getRotation(){return this.delegate(()=>this.firstInputTrack._backing.getRotation())}async getColorSpace(){return this.delegate(()=>this.firstInputTrack._backing.getColorSpace())}async canBeTransparent(){return this.delegate(()=>this.firstInputTrack._backing.canBeTransparent())}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}}class bs extends ks{getType(){return"audio"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getNumberOfChannels(){return this.delegate(()=>this.firstInputTrack._backing.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.firstInputTrack._backing.getSampleRate())}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}}Me();const ws=1/0;"undefined"!==typeof FinalizationRegistry&&new FinalizationRegistry(e=>{e()});class Ts extends He{constructor(){super(),this._disposed=!1,this._refCount=0,this._usedForHls=!1,this._refFinalizationRegistry=null,this._sizePromise=null,this.onread=null,"undefined"!==typeof FinalizationRegistry&&(this._refFinalizationRegistry=new FinalizationRegistry(e=>{e._decrementRefCount()}))}async getSizeOrNull(){if(this._disposed)throw new Oo;return this._sizePromise??(this._sizePromise=(async()=>{let e=this._getFileSize();return void 0!==e||(await this._read(0,1,0,ws),e=this._getFileSize(),E(void 0!==e)),e})())}async getSize(){if(this._disposed)throw new Oo;const e=await this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e}slice(e,t){if(!Number.isInteger(e)||e<0)throw new TypeError("offset must be a non-negative integer.");if(void 0!==t&&(!Number.isInteger(t)||t<0))throw new TypeError("length, when provided, must be a non-negative integer.");return new Ns(this,e,t)}_dispatchRead(e,t){this.onread?.(e,t),this._emit("read",{start:e,end:t})}ref(){return new Ss(this)}_incrementRefCount(){this._refCount++}_decrementRefCount(){this._refCount--,0===this._refCount&&(this._dispose(),this._disposed=!0)}}class Ss{constructor(e){if(this._freed=!1,e._disposed)throw new Error("Cannot ref a disposed source.");e._incrementRefCount(),e._refFinalizationRegistry?.register(this,e,this),this._source=e}get source(){if(!this._source)throw new Error("Can't get source; ref has already been freed.");return this._source}get freed(){return this._freed}free(){if(this._freed)throw new Error("Illegal operation: double free on SourceRef.");const e=this.source;E(e._refCount>0),e._decrementRefCount(),e._refFinalizationRegistry?.unregister(this),this._freed=!0,this._source=null}[Symbol.dispose](){this.freed||this.free()}}class vs extends Ts{constructor(e,t){if("string"!==typeof e)throw new TypeError("rootPath must be a string.");if("function"!==typeof t)throw new TypeError("requestHandler must be a function.");super(),this.rootPath=e,this.requestHandler=t}_resolveRequest(e){const t=this.requestHandler(e),i=e=>{var t;if(!(e instanceof Ts||e instanceof Ss))throw new TypeError("requestHandler must return or resolve to a Source or SourceRef.");const i=e instanceof Ts?e.ref():e;return(t=i.source)._usedForHls||(t._usedForHls=this._usedForHls),i};return Re(t)?t.then(i):i(t)}}const Ps=(e,t)=>e.path===t.path;class Is extends vs{constructor(){super(...arguments),this._root=null,this._rootRequest=null}_read(e,t,i,r){if(!this._root){if(!this._rootRequest){const e=this._resolveRequest({path:this.rootPath,isRoot:!0}),t=e=>{const t=e instanceof Ts?e.ref():e;return this._root=t,this._rootRequest=null,t};Re(e)?this._rootRequest=e.then(t):(t(e),E(this._root))}if(this._rootRequest)return this._rootRequest.then(a=>a.source._read(e,t,i,r))}return this._root.source._read(e,t,i,r)}_getFileSize(){if(this._root)return this._root.source._getFileSize()}_dispose(){this._root?this._root.free():this._rootRequest&&this._rootRequest.then(e=>e.free())}}const xs="undefined"!==typeof FinalizationRegistry?new FinalizationRegistry(e=>{e.cancel().catch(()=>{})}):null;class Cs extends Ts{constructor(e,t={}){if(!(e instanceof Blob))throw new TypeError("blob must be a Blob.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.maxCacheSize&&(!Ne(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.useStreamReader&&"boolean"!==typeof t.useStreamReader)throw new TypeError("options.useStreamReader, when provided, must be a boolean.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(),this._readers=new WeakMap,this._blob=e,this._options=t,this._orchestrator=new Ms({maxCacheSize:t.maxCacheSize??8388608,maxWorkerCount:4,runWorker:this._runWorker.bind(this),onIdleWorkerRemoved:e=>{const t=this._readers.get(e);t&&(this._readers.delete(e),xs?.unregister(e),t.cancel().catch(()=>{}))},prefetchProfile:Ds.fileSystem,handleUnhandledError:t.handleUnhandledError}),this._orchestrator.fileSize=e.size}_getFileSize(){return this._orchestrator.fileSize}_read(e,t,i,r){return this._orchestrator.read(e,t,i,r)}async _runWorker(e){E(e.strictTarget);let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!Pe()&&!1!==this._options.useStreamReader){t=this._blob.slice(e.currentPos).stream().getReader(),xs?.register(e,t,e)}else t=null;this._readers.set(e,t)}for(;e.currentPos{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))&&"undefined"!==typeof window){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(i instanceof Request?i.url:i,window.location.href).origin)}catch{}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return Ke._warn("Request will not be retried because a CORS error was suspected due to different origins. You can modify this behavior by providing your own function for the 'getRetryDelay' option."),null}return Math.min(2**(e-2),16)},Es=new Set;class _s extends vs{constructor(e,t={}){if("string"!==typeof e&&!(e instanceof URL)&&!("undefined"!==typeof Request&&e instanceof Request))throw new TypeError("url must be a string, URL or Request.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.requestInit&&(!t.requestInit||"object"!==typeof t.requestInit))throw new TypeError("options.requestInit, when provided, must be an object.");if(void 0!==t.getRetryDelay&&"function"!==typeof t.getRetryDelay)throw new TypeError("options.getRetryDelay, when provided, must be a function.");if(void 0!==t.maxCacheSize&&(!Ne(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.parallelism&&(!Number.isInteger(t.parallelism)||t.parallelism<1))throw new TypeError("options.parallelism, when provided, must be a positive number.");if(void 0!==t.fetchFn&&"function"!==typeof t.fetchFn)throw new TypeError("options.fetchFn, when provided, must be a function.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(e instanceof Request?e.url:e instanceof URL?e.href:e,e=>new _s(e.path,this._options)),this._offset=0,this._length=null,this._fileSizeDetermined=!1,this._sequentialBacking=null,this._url=e,this._options=t,this._getRetryDelay=t.getRetryDelay??Bs,this._requestInit={...t.requestInit};let i=null;if(t.requestInit?.headers){const e={...we(t.requestInit.headers)},r=Object.keys(e).find(e=>"range"===e.toLowerCase());void 0!==r&&(i=e[r],delete e[r],this._requestInit.headers=e)}if(e instanceof Request){const t=e.headers.get("Range");if(null!==t){i??(i=t);const r=new Request(e);r.headers.delete("Range"),this._url=r}}if(null!==i){const e=Fs(i);e&&(this._offset=e.offset,this._length=e.length)}this._orchestrator=new Ms({maxCacheSize:t.maxCacheSize??67108864,maxWorkerCount:t.parallelism??2,runWorker:this._runWorker.bind(this),prefetchProfile:Ds.network,handleUnhandledError:t.handleUnhandledError})}_getFileSize(){if(!this._fileSizeDetermined)return null!==this._length?this._length:void 0;const e=this._sequentialBacking?this._sequentialBacking._endIndex:this._orchestrator.fileSize;return null===e?null!==this._length?this._length:null:le(e-this._offset,0,this._length??1/0)}_read(e,t,i,r){if(null!==this._length&&t>this._length)return null;const a=this._offset,s=this._sequentialBacking?this._sequentialBacking._read(a+e,a+t):this._orchestrator.read(a+e,a+t,Math.max(a+i,a),a+Math.min(r,this._length??1/0)),n=e=>e?(e.offset-=this._offset,e):null;return Re(s)?s.then(n):n(s)}async _runWorker(e){for(;;){const i=new AbortController,r=await Te(this._options.fetchFn??fetch,this._url,be(this._requestInit,{headers:{Range:`bytes=${e.currentPos}-`},signal:i.signal}),this._getRetryDelay,()=>this._disposed);if(!r.ok)throw new Error(`Error fetching ${String(this._url)}: ${r.status} ${r.statusText}`);r.redirected&&(this.rootPath=r.url);e:if(null===this._orchestrator.fileSize&&(206===r.status||"basic"===r.type&&!r.headers.has("Content-Encoding"))){const t=r.headers.get("Content-Range");if(t){const e=/\/(\d+)/.exec(t);if(e){this._orchestrator.supplyFileSize(Number(e[1]));break e}}const i=r.headers.get("Content-Length");if(i){const t=206===r.status?e.currentPos:0;this._orchestrator.supplyFileSize(t+Number(i))}}if(this._fileSizeDetermined=!0,!r.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");if(206!==r.status){if(this._sequentialBacking)return void r.body.cancel();if(!this._usedForHls){const e=new URL(this._url instanceof Request?this._url.url:this._url,"undefined"!==typeof window?window.location.href:void 0);"null"===e.origin||e.pathname.endsWith(".m3u8")||e.pathname.endsWith(".m3u")||Es.has(e.origin)||(Ke._warn(`HTTP server (origin ${e.origin}) did not respond to a range request with 206 Partial Content, meaning the resource will now be streamed sequentially, with old data being evicted from the cache. Reads into evicted regions will throw. To enable efficient media file streaming across a network, please make sure your server supports range requests. Alternatively, set maxCacheSize to Infinity in the UrlSource options to keep the entire resource in memory.`),Es.add(e.origin))}return void this._transitionToSequentialMode(r.body)}const a=r.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted)return i.abort(),void this._orchestrator.signalWorkerStoppedRunning(e);let r;try{r=await a.read()}catch(t){if(this._disposed)throw t;const e=this._getRetryDelay(1,t,this._url);if(null!==e){Ke._error("Error while reading response stream. Attempting to resume.",t),await We(1e3*e);break}throw t}if(e.aborted)continue;const{done:s,value:n}=r;if(s){if(e.currentPos>=e.targetPos)return void this._orchestrator.onWorkerFinished(e);if(e.strictTarget)break;return void this._orchestrator.onWorkerFinished(e)}this._dispatchRead(e.currentPos,e.currentPos+n.length),this._orchestrator.supplyWorkerData(e,n)}}}_transitionToSequentialMode(e){let t=e.getReader(),i=0,r=0;const a=new ReadableStream({pull:async e=>{for(;;){let s;try{s=await t.read()}catch(a){if(this._disposed)throw a;const e=this._getRetryDelay(1,a,this._url);if(null===e)throw a;Ke._error("Error while reading response stream. Attempting to resume.",a),await We(1e3*e);const s=await Te(this._options.fetchFn??fetch,this._url,be(this._requestInit,{headers:{Range:`bytes=${i}-`}}),this._getRetryDelay,()=>this._disposed);if(!s.ok)throw new Error(`Error fetching ${String(this._url)}: ${s.status} ${s.statusText}`);if(!s.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");t=s.body.getReader(),r=206===s.status?0:i;continue}if(s.done)return void e.close();let n=s.value;if(r>0){const e=Math.min(r,n.length);r-=e,n=n.subarray(e)}if(0!==n.length)return i+=n.length,void e.enqueue(n)}},cancel:()=>t.cancel()}),s=new As(a,{maxCacheSize:this._orchestrator.options.maxCacheSize,handleUnhandledError:this._options.handleUnhandledError});s._endIndex=this._orchestrator.fileSize,s._cacheMissErrorMessage="Attempted to read data from an already-evicted part of the cache. Because the HTTP server did not honor the range request, data can only be read sequentially, with old data being evicted from the cache. To fix this issue, either ensure your server responds to range requests with 206 Partial Content, or set maxCacheSize to Infinity in the UrlSource options. Note that the latter will store the entire file in the cache if needed, no matter how large.",s.on("read",({start:e,end:t})=>this._dispatchRead(e,t)),this._sequentialBacking=s;const n=new Set;for(const o of this._orchestrator.workers){for(const e of o.pendingSlices)n.add(e);o.aborted=!0,o.pendingSlices.length=0}for(const o of this._orchestrator.queuedReads)for(const e of o.pendingSlices)n.add(e);this._orchestrator.workers.length=0,this._orchestrator.queuedReads.length=0;for(const o of n){const e=s._read(o.start,o.start+o.bytes.length);Re(e)?e.then(e=>{e?(E(e.offset===o.start),o.resolve(e.bytes)):o.resolve(null)},e=>o.reject(e)):(E(null===e),o.resolve(null))}}_dispose(){this._orchestrator.dispose(),this._sequentialBacking&&(this._sequentialBacking._disposed=!0,this._sequentialBacking._dispose())}}const Rs=/^bytes=(\d+)-(\d*)$/,Fs=e=>{const t=Rs.exec(e.trim());if(!t)return null;const i=Number(t[1]),r=""===t[2]?null:Number(t[2]);return null!==r&&rthis._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const i=Z(this._cache,e,e=>e.start),r=-1!==i?this._cache[i]:null;if(r&&r.start<=e&&t<=r.end)return{bytes:r.bytes,view:r.view,offset:r.start};let a=e;const s=new Uint8Array(t-e);if(-1!==i)for(let l=i;l=t)break;const r=Math.max(e,i.start);r>a&&this._throwDueToCacheMiss();const n=Math.min(t,i.end);ra&&this._throwDueToCacheMiss();const{promise:n,resolve:o,reject:c}=te();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:c}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0;else{if(!this._handleUnhandledError)throw e;this._handleUnhandledError(e)}})),n}_throwDueToCacheMiss(){throw new Error(this._cacheMissErrorMessage)}async _pull(){for(this._reader??(this._reader=this._stream.getReader());this._currentIndex0;){const e=this._cache[0];if(this._maxRequestedIndex-e.end<=this._maxCacheSize)break;this._cache.shift()}this._currentIndex+=t.byteLength}this._pulling=!1}_dispose(){for(const e of this._pendingSlices)e.reject(new Oo);this._pendingSlices.length=0,this._cache.length=0,this._reader?.cancel()}}const Ds={fileSystem:(e,t)=>{const i=65536;return{start:e=Math.floor((e-i)/i)*i,end:t=Math.ceil((t+i)/i)*i}},network:(e,t,i)=>{const r=65536;e=Math.max(0,Math.floor((e-r)/r)*r);for(const a of i){const i=8388608,r=Math.max((a.startPos+a.targetPos)/2,a.targetPos-i);if(Ae(e,t,r,a.targetPos)){const e=a.targetPos-a.startPos,r=Math.ceil((e+1)/i)*i,s=2**Math.ceil(Math.log2(e+1)),n=Math.min(s,r);t=Math.max(t,a.startPos+n)}}return{start:e,end:t=Math.max(t,e+524288)}}};class Ms{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1,this.queuedReads=[]}read(e,t,i,r){E(!this.disposed);const a=this.options.prefetchProfile(e,t,this.workers),s=Math.max(a.start,i),n=Math.min(a.end,this.fileSize??1/0,r);E(s<=e&&t<=n);let o=null;const c=Z(this.cache,e,e=>e.start),l=-1!==c?this.cache[c]:null;l&&l.start<=e&&t<=l.end&&(l.age=this.nextAge++,o={bytes:l.bytes,view:l.view,offset:l.start});const u=Z(this.cache,s,e=>e.start),d=o?null:new Uint8Array(t-e);let h=0,f=s;const m=[];if(-1!==u){for(let i=u;i=n)break;if(r.end<=s)continue;const a=Math.max(s,r.start),o=Math.min(n,r.end);if(E(a<=o),f=d.length&&(o={bytes:d,view:N(d),offset:e}),0===m.length)return E(o),o;const{promise:p,resolve:g,reject:k}=te(),y=[];for(const w of m){const i=Math.max(e,w.start),r=Math.min(t,w.end);i===w.start&&r===w.end?y.push(w):ie.hole.start),i=-1!==t?this.queuedReads[t]:null;for(i&&w.start<=i.hole.end?(i.hole.end=Math.max(i.hole.end,w.end),i.strictTarget&&(i.strictTarget=e),b&&i.pendingSlices.push(b)):(t++,i={hole:{start:w.start,end:w.end},strictTarget:e,pendingSlices:b?[b]:[],age:this.nextAge++},this.queuedReads.splice(t,0,i));t+1i.hole.end)break;i.hole.end=Math.max(i.hole.end,e.hole.end),i.pendingSlices.push(...e.pendingSlices),i.strictTarget&&(i.strictTarget=e.strictTarget),i.age=Math.min(i.age,e.age),this.queuedReads.splice(t+1,1)}}}return o?p.catch(e=>{if(!this.disposed){if(!this.options.handleUnhandledError)throw e;this.options.handleUnhandledError(e)}}):(E(d),o=p.then(t=>t&&{bytes:t,view:N(t),offset:e})),o}checkHoleAgainstWorker(e,t,i){if(Ae(t.start-2**17,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end);for(let t=0;t=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i{if(e.running=!1,e.pendingSlices.length>0)e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0;else if(!e.aborted&&!this.disposed){if(!this.options.handleUnhandledError)throw t;this.options.handleUnhandledError(t)}}).finally(()=>{if(!e.running&&this.queuedReads.length>0){let e=0;for(let r=1;re.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;at.start&&(t.start=r),t.end<=t.start&&(s.holes.splice(e,1),e--)}0===s.holes.length&&(s.resolve(s.bytes),e.pendingSlices.splice(a,1),a--)}for(let a=0;ae){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t=e){for(const e of i.pendingSlices)e.resolve(null);this.queuedReads.splice(t,1),t--}else if(i.hole.end>e){i.hole.end=e,i.strictTarget=!0;for(let t=0;t=e&&(r.resolve(null),i.pendingSlices.splice(t,1),t--)}}}}signalWorkerStoppedRunning(e){e.running=!1,e.aborted||(e.pendingSlices.length=0)}onWorkerFinished(e){const t=this.workers.indexOf(e);E(-1!==t),e.running=!1,this.workers.splice(t,1),this.options.onIdleWorkerRemoved?.(e),null===this.fileSize&&this.supplyFileSize(e.currentPos);for(const i of e.pendingSlices)i.resolve(null)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=Z(this.cache,e.start,e=>e.start)+1;if(t>0){const i=this.cache[t-1];if(i.end>=e.end)return;if(i.end>e.start){const r=new Uint8Array(e.end-i.start);r.set(i.bytes,0),r.set(e.bytes,e.start-i.start),this.currentCacheSize+=e.end-i.end,i.bytes=r,i.view=N(r),i.end=e.end,t--,e=i}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let i=t+1;i=t.end){this.cache.splice(i,1),this.currentCacheSize-=t.bytes.length,i--;continue}const r=new Uint8Array(t.end-e.start);r.set(e.bytes,0),r.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=r,e.view=N(r),e.end=t.end,this.cache.splice(i,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let i=1;ithis._length)return null;const a=this._baseSource._read(this._offset+e,this._offset+t,this._offset+i,this._offset+r),s=e=>e?(e.offset-=this._offset,e):null;return Re(a)?a.then(s):s(a)}_dispose(){this._ref?.free()}ref(){return this._ref??(this._ref=this._baseSource.ref()),super.ref()}}var Os=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,a;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(a=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");a&&(r=function(){try{a.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t},zs=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,a=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===a)return a=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return a|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else a|=1}catch(n){i(n)}if(1===a)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});const Ls=/^0[xX][0-9a-fA-F]+$/,Us=/^data:.*;base64,/i;class qs extends gs{constructor(e,t,i,r){super(e.input,t,i),this.segments=[],this.nextLines=null,this.currentUpdateSegmentsPromise=null,this.streamHasEnded=!1,this.lastSegmentUpdateTime=-1/0,this.refreshInterval=5,this.rootPath=t,this.demuxer=e,this.nextLines=r}runUpdateSegments(){return this.currentUpdateSegmentsPromise??(this.currentUpdateSegmentsPromise=(async()=>{try{const e=this.getRemainingWaitTimeMs();e>0&&await We(e),this.lastSegmentUpdateTime=performance.now(),await this.updateSegments()}finally{this.currentUpdateSegmentsPromise=null}})())}getRemainingWaitTimeMs(){const e=performance.now()-this.lastSegmentUpdateTime,t=Math.max(0,1e3*this.refreshInterval-e);return t<=50?0:t}async updateSegments(){let e=this.nextLines;if(this.nextLines=null,!e){const t={stack:[],error:void 0,hasError:!1};try{const i=Os(t,await this.demuxer.input._getSourceUncached({path:this.rootPath,isRoot:!1}),!1),r=new zo(i.source),a=await r.requestEntireFile();E(a),e=ac(a,a.length,{ignore:ms}),i.source instanceof vs&&(this.rootPath=i.source.rootPath)}catch(y){t.error=y,t.hasError=!0}finally{zs(t)}}const t=!1!==this.input._formatOptions.hls?.offsetTimestampsByDateTime;let i=!1,r=0,a=null,s=null,n=null,o=0,c=null,l=null,u=null,d=null,h=null,f=null,m=!1,p=R(this.segments)??null;const g=e=>{const t=e.indexOf("@"),i=Number(-1===t?e:e.slice(0,t));if(!Number.isInteger(i)||i<0)throw new Error(`Invalid #EXT-X-BYTERANGE length '${e}'.`);let r=null;if(-1!==t&&(r=Number(e.slice(t+1)),!Number.isInteger(r)||r<0))throw new Error(`Invalid #EXT-X-BYTERANGE offset '${e}'.`);return{length:i,offset:r}},k=e=>{o=e,p&&(E(null!==p.sequenceNumber),p.sequenceNumber0&&null!==f&&(r=o*f),m=!0);const e=y.slice(8),t=e.indexOf(","),i=-1===t?e:e.slice(0,t),a=Number(i);if(!Number.isFinite(a)||a<0)throw new Error(`Invalid #EXTINF tag duration '${i}'.`);s=a}else if(y.startsWith(os)){const e=new ps(y.slice(11)),t=e.get("uri");if(!t)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");const i=e.get("byterange");let o=null;if(null!==i&&(o=g(i)),o&&null===o.offset)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!p){const e={path:Oe(this.rootPath,t),offset:o?.offset??0,length:o?.length??null};if("AES-128"===n?.method&&!n.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");l={timestamp:r,unixEpochTimestamp:a,firstSegment:null,sequenceNumber:null,location:e,duration:0,encryption:n,initSegment:null,lastProgramDateTimeSeconds:h}}s=null,null===d?u=null:d=null}else if(y.startsWith(cs)){const e=new ps(y.slice(11)),t=e.get("method");if("NONE"===t)n=null;else if("AES-128"===t){const t=e.get("uri");if(!t)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let i=null;const r=e.get("iv");if(r){if(!Ls.test(r))throw new Error(`Unsupported IV format '${r}'.`);let e=r.slice(2);e=e.padStart(32,"0"),i=new Uint8Array(Yi);for(let t=0;t=8&&112===t[4]&&115===t[5]&&115===t[6]&&104===t[7]){const e=N(t).getUint32(0);r=Hi(t.subarray(8,Math.min(e,t.length)))}}n={method:t,psshBox:r}}}}else if(y.startsWith(ls)){const e=y.slice(22),t=Number(e);if(!Number.isInteger(t)||t<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${e}'.`);k(t)}else if(y.startsWith(us)){const e=g(y.slice(17));if(null===e.offset){if(null===u)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");e.offset=u}d=e,u=e.offset+e.length}else if(y.startsWith(ds)){if(p)continue;const e=y.slice(25),i=Date.parse(e);if(!Number.isFinite(i))continue;const s=i/1e3;if(h===s)continue;if(null===h&&this.segments.length>0){const e=R(this.segments),i=s-(e.timestamp+e.duration);for(const r of this.segments)r.unixEpochTimestamp=r.timestamp+i,t&&(r.timestamp=r.unixEpochTimestamp)}h=s,a=s,t&&(r=s)}else if("#EXT-X-DISCONTINUITY"===y)c=null;else if(y.startsWith(hs)){const e=y.slice(22),t=Number(e);if(!Number.isFinite(t)||t<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${e}'.`);this.refreshInterval=t,f=t}else{if("#EXT-X-ENDLIST"===y){this.streamHasEnded=!0;break}if(y.startsWith(fs)){"vod"===y.slice(21).toLowerCase()&&(this.streamHasEnded=!0)}}}else{if("#EXTM3U"!==y)throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");i=!0}}if(!i)throw new Error("Invalid M3U8 file; no #EXTM3U header.")}async getFirstSegment(){return 0===this.segments.length&&await this.runUpdateSegments(),this.segments[0]??null}async getSegmentAt(e,t){0===this.segments.length&&await this.runUpdateSegments();let i=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){const r=Z(this.segments,e,e=>e.timestamp);if(-1===r)return null;if(r0;for(;;){if(re.segment===t);if(i)return i.age=this.nextInputCacheAge++,i.input;let r=null;(t.initSegment||t.firstSegment)&&(r=this.getInputForSegment(t.initSegment??t.firstSegment));const a={...this.input._formatOptions,isobmff:{...this.input._formatOptions.isobmff,resolveKeyId:this.input._formatOptions.isobmff?.resolveKeyId&&(e=>{if(!t.encryption||"SAMPLE-AES"!==t.encryption.method&&"SAMPLE-AES-CTR"!==t.encryption.method||!t.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(e);let i=e.psshBoxes;const{psshBox:r}=t.encryption;return null!==r.keyIds&&!r.keyIds.includes(e.keyId)||i.some(e=>Vi(e,r))||(i=[...i,r]),this.input._formatOptions.isobmff.resolveKeyId({...e,psshBoxes:i})})}},s=new Mo({source:new Is(t.location.path,async e=>{E(e.isRoot);const i={...e,isRoot:!1};let r;const a=t.location.offset>0||null!==t.location.length;if(t.encryption&&"SAMPLE-AES"!==t.encryption.method&&"SAMPLE-AES-CTR"!==t.encryption.method)if("AES-128"===t.encryption.method){const e=t.encryption;E(e.iv);let s=await this.input._getSourceCached(i);if(a){const e=s.source.slice(t.location.offset,t.location.length??void 0).ref();s.free(),s=e}const n=((e,t,i)=>{let r=!1,a=0;const s=new nr;return new ReadableStream({pull:async n=>{r||(s.init(await t()),r=!0);let o=e.requestSliceRange(a,0,65552);if(Re(o)&&(o=await o),!o||0===o.length)throw new Error("Invalid ciphertext.");const c=o.length;if(c%16!==0)throw new Error("Invalid ciphertext.");const l=65552===c?c-16:c,u=qo(o,l),d=new Uint8Array(l);for(let e=0;e16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");const t=d.subarray(0,l-e);n.enqueue(t),n.close(),i()}},cancel:()=>{i()}})})(new zo(s.source),async()=>{const t={stack:[],error:void 0,hasError:!1};try{const i=Os(t,await this.input._getSourceCached({path:e.keyUri,isRoot:!1},Do),!1),r=new zo(i.source),a=await r.requestSlice(0,Yi);if(!a)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");return{key:qo(a,Yi),iv:e.iv}}catch(i){t.error=i,t.hasError=!0}finally{zs(t)}},()=>{s.free()});r=new As(n).ref()}else E(!1);else if(r=await this.input._getSourceCached(i),a){const e=r.source.slice(t.location.offset,t.location.length??void 0).ref();r.free(),r=e}return r}),formats:this.input._formats.filter(e=>!(e instanceof cn)),initInput:r??void 0,formatOptions:a});s._onFormatDetermined=e=>{if(("SAMPLE-AES"===t.encryption?.method||"SAMPLE-AES-CTR"===t.encryption?.method)&&!e._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:t,input:s,age:this.nextInputCacheAge++});if(this.inputCache.length>4){const e=Le(this.inputCache,e=>e.age);E(-1!==e),this.inputCache.splice(e,1)}return s}async getLiveRefreshInterval(){return 0===this.getRemainingWaitTimeMs()&&await this.runUpdateSegments(),this.streamHasEnded?null:this.refreshInterval}}class Ws extends Ui{constructor(e){super(e),this.metadataPromise=null,this.trackBackings=null,this.internalTracks=null,this.segmentedInputs=[],this.hasMasterPlaylist=!0}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{E(this.input._rootSource instanceof vs);const e=await this.input._reader.requestEntireFile();E(e);const t=ac(e,e.length,{ignore:ms}),{rootPath:i}=this.input._rootSource,r=[],a=[];for(let u=1;u"video"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],n=[...new Set(a.filter(e=>"audio"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],o=await Promise.all(r.map(async(e,t)=>{const r=[],o=e.attributes.get("codecs");let c;if(o)c=o.split(",").map(e=>e.trim());else{const t=this.getSegmentedInputForPath(e.fullPath),i=await t.getTrackBackings(),r=await Promise.all(i.map(async e=>({track:e,codec:await e.getCodec()})));c=await Promise.all(r.filter(e=>null!==e.codec).map(e=>e.track.getDecoderConfig().then(e=>e.codec)))}const l=e.attributes.get("video"),u=e.attributes.get("audio"),d=c.some(e=>mi.includes(Ei(e))),h=c.some(e=>gi.includes(Ei(e)));if(null!==l&&!d){if(!s.includes(l))throw new Error(`Invalid M3U8 file; variant stream references video group "${l}" which is not defined in any #EXT-X-MEDIA tags.`);const e=a.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===l&&"video"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Oe(i,t),a=this.getSegmentedInputForPath(r),s=(await a.getTrackBackings()).find(e=>"video"===e.getType());if(!s||null===await s.getCodec())break e;const n=await s.getDecoderConfig().then(e=>e?.codec??null);E(null!==n),c.push(n)}}if(null!==u&&!h){if(!n.includes(u))throw new Error(`Invalid M3U8 file; variant stream references audio group "${u}" which is not defined in any #EXT-X-MEDIA tags.`);const e=a.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===u&&"audio"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Oe(i,t),a=this.getSegmentedInputForPath(r),s=(await a.getTrackBackings()).find(e=>"audio"===e.getType());if(!s||null===await s.getCodec())break e;const n=await s.getDecoderConfig().then(e=>e?.codec??null);E(null!==n),c.push(n)}}c=[...new Set(c)];let f=null,m=null;const p=e.attributes.getAsNumber("bandwidth");E(null!==p);const g=e.attributes.getAsNumber("average-bandwidth"),k=e.attributes.get("name");for(const i of c){const o=Ei(i);if(null!==o)if(mi.includes(o)){if(null!==f)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");f=i;const n=e.attributes.get("video");if(null===n){const i=e.attributes.get("resolution");let a=null,s=null;if(i){const e=i.match(/^(\d+)x(\d+)$/);e&&(a=Number(e[1]),s=Number(e[2]))}r.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:ue,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:f,pairingMask:1n<0?a:null}})}else{if(!n.includes(s))throw new Error(`Invalid M3U8 file; variant stream references audio group "${s}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of a){const a=i.attributes.get("group-id"),n=i.attributes.get("type");if(a!==s||"audio"!==n.toLowerCase())continue;const o=i.attributes.get("channels")??e.attributes.get("channels"),c=null!==o?Number(o.split("/")[0]):null;r.push({id:-1,demuxer:this,backingTrack:null,default:Ks(i.attributes),autoselect:Ks(i.attributes)||Xs(i.attributes),languageCode:$s(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:i.fullPath??e.fullPath,fullCodecString:m,pairingMask:1n<0?c:null}})}}}}return r})),c=[],l=e=>{const t=c.find(t=>t.fullPath===e.fullPath&&t.info.type===e.info.type);t?(t.pairingMask|=e.pairingMask,t.default||(t.default=e.default),t.autoselect||(t.autoselect=e.autoselect),t.lineNumber=Math.min(t.lineNumber,e.lineNumber),null!==e.peakBitrate&&(t.peakBitrate=Math.max(t.peakBitrate??-1/0,e.peakBitrate)),null!==e.averageBitrate&&(t.averageBitrate=Math.max(t.averageBitrate??-1/0,e.averageBitrate)),t.languageCode===ue&&(t.languageCode=e.languageCode)):(e.id=c.length+1,c.push(e))};for(const u of o)for(const e of u)l(e);c.sort((e,t)=>e.lineNumber-t.lineNumber),this.trackBackings=[];for(const u of c)"video"===u.info.type?this.trackBackings.push(new Vs(u)):this.trackBackings.push(new js(u));this.internalTracks=c})())}async getTrackBackings(){return await this.readMetadata(),E(this.trackBackings),this.trackBackings}getSegmentedInputForPath(e){let t=this.segmentedInputs.find(t=>t.path===e);if(t)return t;let i=null;if(this.internalTracks){i=this.internalTracks.filter(t=>t.fullPath===e).map(e=>({id:e.id,type:e.info.type}))}return t=new qs(this,e,i,null),this.segmentedInputs.push(t),t}async getMetadataTags(){return{}}async getMimeType(){return is}dispose(){if(this.segmentedInputs){for(const e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}}class Hs{constructor(e){this.internalTrack=e,this.hydrationPromise=null}hydrate(){return this.hydrationPromise??(this.hydrationPromise=(async()=>{const e=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath);let t=null;const i=(await e.getTrackBackings()).filter(e=>e.getType()===this.getType());if(1===i.length)t=i[0];else if(this instanceof Vs){for(const r of i)if(await r.getCodec()===this.getCodec()){t=r;break}}else{E(this instanceof js);for(const e of i)if(await e.getCodec()===this.getCodec()){t=e;break}}if(!t)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=t})())}delegate(e){return this.internalTrack.backingTrack?e():this.hydrate().then(e)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return{...Ge,default:this.internalTrack.autoselect,primary:this.internalTrack.default}}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){E(this.internalTrack.demuxer.internalTracks);const e=this.internalTrack.info.type;let t=0;for(const i of this.internalTrack.demuxer.internalTracks)if(i.info.type===e&&t++,i===this.internalTrack)break;return t}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getUnixTimeForTimestamp(e){return this.delegate(()=>this.internalTrack.backingTrack.getUnixTimeForTimestamp(e))}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}async getDurationFromMetadata(e){return await this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(e)}async getLiveRefreshInterval(){return await this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}async getFirstPacket(e){return await this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(e)}async getPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getPacket(e,t)}async getKeyPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(e,t)}async getNextPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getNextPacket(e,t)}async getNextKeyPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(e,t)}}class Vs extends Hs{constructor(e){super(e)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return Ei(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}async getColorSpace(){return await this.hydrate(),this.backingVideoTrack.getColorSpace()}async canBeTransparent(){return await this.hydrate(),this.backingVideoTrack.canBeTransparent()}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingVideoTrack.getDecoderConfig()}}class js extends Hs{constructor(e){super(e)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return Ei(this.internalTrack.fullCodecString)}getNumberOfChannels(){return null!==this.internalTrack.info.numberOfChannels?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingAudioTrack.getDecoderConfig()}}const Ks=e=>{const t=e.get("default");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},Xs=e=>{const t=e.get("autoselect");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},$s=e=>{if(null===e)return ue;const t=e.split("-")[0];return t||ue};class Gs{constructor(){this._isIsobmff=!1}}class Qs extends Gs{constructor(){super(...arguments),this._isIsobmff=!0}async _getMajorBrand(e){let t=e._reader.requestSlice(0,12);if(Re(t)&&(t=await t),!t)return null;t.skip(4);const i=rc(t,4);return"ftyp"!==i&&"styp"!==i?null:rc(t,4)}_createDemuxer(e){return new or(e)}}class Ys extends Qs{async _canReadInput(e){const t=await this._getMajorBrand(e);if(null!==t)return"qt "!==t;let i=0;for(let r=0;r<10;r++){let t=e._reader.requestSlice(i,8);if(Re(t)&&(t=await t),!t)return!1;let r=$o(t),a=8;if(1===r){let t=e._reader.requestSlice(i+8,8);if(Re(t)&&(t=await t),!t)return!1;r=Jo(t),a=16}if(r8)return!1;if(Ar(i,r)!==Ir.EBML)return!1;const a=Mr(i);if("number"!==typeof a)return!1;let s=e._reader.requestSlice(i.filePos,a);if(Re(s)&&(s=await s),!s)return!1;const n=i.filePos;for(;s.filePos<=n+a-2;){const e=Nr(s);if(!e)break;const{id:i,size:r}=e,a=s.filePos;if(void 0===r)return!1;switch(i){case Ir.EBMLVersion:if(1!==Ar(s,r))return!1;break;case Ir.EBMLReadVersion:if(1!==Ar(s,r))return!1;break;case Ir.DocType:if(Or(s,r)!==t)return!1;break;case Ir.DocTypeVersion:if(Ar(s,r)>4)return!1}s.filePos=a+r}return!0}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new da(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class en extends Zs{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class tn extends Gs{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,uc);if(Re(i)&&(i=await i),!i)break;const r=mc(i);if(!r)break;t=i.filePos+r.size}const i=await pa(e._reader,t,t+4096);if(!i)return!1;const r=i.header,a=Di(r.mpegVersionId,r.channel);let s=e._reader.requestSlice(i.startPos+a,4);if(Re(s)&&(s=await s),!s)return!1;const n=$o(s);if(n===Fi||n===Ai)return!0;t=i.startPos+i.header.totalSize;const o=await pa(e._reader,t,t+4);if(!o)return!1;const c=o.header;return r.channel===c.channel&&r.sampleRate===c.sampleRate}_createDemuxer(e){return new ga(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class rn extends Gs{async _canReadInput(e){let t=e._reader.requestSlice(0,12);if(Re(t)&&(t=await t),!t)return!1;const i=rc(t,4);if("RIFF"!==i&&"RIFX"!==i&&"RF64"!==i)return!1;t.skip(4);return"WAVE"===rc(t,4)}_createDemuxer(e){return new Fa(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class an extends Gs{async _canReadInput(e){let t=e._reader.requestSlice(0,4);return Re(t)&&(t=await t),!!t&&"OggS"===rc(t,4)}_createDemuxer(e){return new xa(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class sn extends Gs{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,uc);if(Re(i)&&(i=await i),!i)break;const r=mc(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSlice(t,4);return Re(i)&&(i=await i),!!i&&"fLaC"===rc(i,4)}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new La(e)}}class nn extends Gs{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,uc);if(Re(i)&&(i=await i),!i)break;const r=mc(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSliceRange(t,7,9);if(Re(i)&&(i=await i),!i)return!1;const r=Ma(i);if(!r)return!1;if(t+=r.frameLength,i=e._reader.requestSliceRange(t,7,9),Re(i)&&(i=await i),!i)return!1;const a=Ma(i);return!!a&&(r.objectType===a.objectType&&r.samplingFrequencyIndex===a.samplingFrequencyIndex&&r.channelConfiguration===a.channelConfiguration)}_createDemuxer(e){return new Oa(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}class on extends Gs{async _canReadInput(e){let t=e._reader.requestSlice(0,205);if(Re(t)&&(t=await t),!t)return!1;const i=qo(t,205);return 71===i[0]&&71===i[188]||(71===i[0]&&71===i[204]||71===i[4]&&71===i[196])}_createDemuxer(e){return new Xa(e)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}}class cn extends Gs{async _canReadInput(e){let t=e._reader.requestSlice(0,7);if(Re(t)&&(t=await t),!t)return!1;if(!("#EXTM3U"===rc(t,7)))return!1;if(!(e._rootSource instanceof vs))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return e._rootSource._usedForHls=!0,!0}_createDemuxer(e){return new Ws(e)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return is}}const ln=new Ys,un=new Js,dn=new Zs,hn=new en,fn=new tn,mn=new rn,pn=new an,gn=new nn,kn=new sn,yn=new on,bn=new cn,wn=[bn,ln,un,dn,hn,mn,pn,kn,fn,gn,yn],Tn=[bn,ln,un,fn,gn,yn];var Sn=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,a=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===a)return a=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return a|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else a|=1}catch(n){i(n)}if(1===a)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});Me();let vn=-1/0,Pn=-1/0,In=null;"undefined"!==typeof FinalizationRegistry&&(In=new FinalizationRegistry(e=>{const t=performance.now();"video"===e.type?(t-vn>=1e3&&(Ke._error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),vn=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-Pn>=1e3&&(Ke._error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),Pn=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));class xn{constructor(){this._referenceCount=0,this._lastAllocationBuffer=null}}const Cn=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],Bn=new Set(Cn);class En{get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(ye*this.timestamp)}get microsecondDuration(){return Math.trunc(ye*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0===t.format||!Bn.has(t.format))throw new TypeError("init.format must be one of: "+Cn.join(", "));if(!Number.isInteger(t.codedWidth)||t.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(t.codedHeight)||t.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.layout){if(!Array.isArray(t.layout))throw new TypeError("init.layout, when provided, must be an array.");for(const e of t.layout){if(!e||"object"!==typeof e||Array.isArray(e))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(e.offset)||e.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(e.stride)||e.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==t.visibleRect&&qe(t.visibleRect,"init.visibleRect"),void 0!==t.displayWidth&&(!Number.isInteger(t.displayWidth)||t.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(void 0!==t.displayHeight&&(!Number.isInteger(t.displayHeight)||t.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(void 0!==t.displayWidth!==(void 0!==t.displayHeight))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this.format=t.format,this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0;const i=t.layout??Ln(t.format,t.codedWidth,t.codedHeight);let r=t.colorSpace??null;null===r&&(r="RGBA"===this.format||"RGBX"===this.format||"BGRA"===this.format||"BGRX"===this.format?{primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:{primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.visibleRect={left:t.visibleRect?.left??0,top:t.visibleRect?.top??0,width:t.visibleRect?.width??t.codedWidth,height:t.visibleRect?.height??t.codedHeight},void 0!==t.displayWidth?(this.squarePixelWidth=this.rotation%180===0?t.displayWidth:t.displayHeight,this.squarePixelHeight=this.rotation%180===0?t.displayHeight:t.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height),this._data=t._doNotCopy?M(e):M(e).slice(),this._layout=i,this.colorSpace=new Dn(r)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==t?.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==t?.timestamp&&!Number.isFinite(t?.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==t?.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");void 0!==t?.visibleRect&&qe(t.visibleRect,"init.visibleRect"),this._data=e,this._layout=null,this.format=e.format,this.visibleRect={left:e.visibleRect?.x??0,top:e.visibleRect?.y??0,width:e.visibleRect?.width??e.codedWidth,height:e.visibleRect?.height??e.codedHeight},this.rotation=t?.rotation??0,this.squarePixelWidth=e.displayWidth,this.squarePixelHeight=e.displayHeight,this.timestamp=t?.timestamp??e.timestamp/1e6,this.duration=t?.duration??(e.duration??0)/1e6,this.colorSpace=new Dn(e.colorSpace)}else if("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.visibleRect&&qe(t.visibleRect,"init.visibleRect"),"undefined"!==typeof VideoFrame)return new En(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*ye),duration:Math.trunc((t.duration??0)*ye)||void 0,visibleRect:t.visibleRect&&{x:t.visibleRect.left,y:t.visibleRect.top,width:t.visibleRect.width,height:t.visibleRect.height}}),t);let i=0,r=0;if("naturalWidth"in e?(i=e.naturalWidth,r=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,r=e.videoHeight):"width"in e&&(i=Number(e.width),r=Number(e.height)),!i||!r)throw new TypeError("Could not determine dimensions.");const a=t.visibleRect??{left:0,top:0,width:i,height:r},s=new OffscreenCanvas(a.width,a.height),n=s.getContext("2d",{alpha:xe(),willReadFrequently:!0});if(!n)throw new Error("OffscreenCanvas must have support for the '2d' context in order to create a VideoSample from this data.");n.drawImage(e,-a.left,-a.top),this._data=s,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:a.width,height:a.height},this.squarePixelWidth=a.width,this.squarePixelHeight=a.height,this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0,this.colorSpace=new Dn({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else{if(!(e instanceof xn))throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(this._data=e,e._referenceCount++,this.format=e.getFormat(),null!==this.format&&!Cn.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:e.getCodedWidth(),height:e.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=e.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=e.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0,this.colorSpace=e.getColorSpace()}this.encodeOptions=t?.encodeOptions??{},this.pixelAspectRatio=Ue({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),In?.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return E(null!==this._data),this._data instanceof xn?new En(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):Mn(this._data)?new En(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):this._data instanceof Uint8Array?(E(this._layout),new En(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions,_doNotCopy:!0})):new En(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions})}close(){this._closed||(In?.unregister(this),this._data instanceof xn?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Mn(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){if(zn(e),this._closed)throw new Error("VideoSample is closed.");if(null==(e.format??this.format))throw new Error("Cannot get allocation size when format is null.");if(Mn(this._data))return this._data.allocationSize(e);return qn(this,e).allocationSize}async copyTo(e,t={}){if(!X(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(zn(t),this._closed)throw new Error("VideoSample is closed.");if(null==(t.format??this.format))throw new Error("Cannot copy video sample data when format is null.");if(E(null!==this._data),Mn(this._data))return this._data.copyTo(e,t);if(t.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(t.format)){if(!(this._data instanceof xn)){if("undefined"===typeof VideoFrame)throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");const i=this.toVideoFrame(),r=await i.copyTo(e,t);return i.close(),r}{const i={stack:[],error:void 0,hasError:!1};try{const r=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,a;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(a=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");a&&(r=function(){try{a.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t}(i,await this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},t.colorSpace??"srgb"),!1);if(!(r instanceof En))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(r.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${r.format}' instead.`);return await r.copyTo(e,t)}catch(c){i.error=c,i.hasError=!0}finally{Sn(i)}}}const i=qn(this,t);E(this.format);const r=M(e);if(r.byteLength!(e.data instanceof Uint8Array)||!Number.isInteger(e.stride)||e.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');s=e}else if(this._data instanceof Uint8Array)E(this._layout),E(this._layout.length===a.length),s=this._layout.map((e,t)=>{const i=Math.ceil(this.codedHeight/a[t].heightDivisor);return{data:this._data.subarray(e.offset,e.offset+e.stride*i),stride:e.stride}});else{const e=this._data.getContext("2d");E(e);const t=e.getImageData(0,0,this.codedWidth,this.codedHeight);s=[{data:M(t.data),stride:4*this.codedWidth}]}const n=[],o=a.length;for(let l=0;la.byteLength)throw new Error("Source buffer OOB read.");if(c+u>r.byteLength)throw new Error("Destination buffer OOB write.");const i=a.subarray(o,o+u);r.set(i,c),o+=t,c+=e.destinationStride}n.push(d)}if(void 0!==t.format){const e=this.format.startsWith("RGB")!==t.format.startsWith("RGB"),a=this.format.includes("X")&&t.format.includes("A");if(e||a)for(let t=0;te+t.data.byteLength,0),i=new Uint8Array(t);let r=0;const a=[];for(const s of e)i.set(s.data,r),a.push(r),r+=s.data.byteLength;return new VideoFrame(i,{format:this.format,layout:e.map((e,t)=>({offset:a[t],stride:e.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}return Mn(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?(E(this._layout),new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,layout:this._layout,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,i,r,a,s,n,o,c){let l=0,u=0,d=this.displayWidth,h=this.displayHeight,f=0,m=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(l=t,u=i,d=r,h=a,f=s,m=n,void 0!==o?(p=o,g=c):(p=d,g=h)):(f=t,m=i,void 0!==r&&(p=r,g=a)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(l))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(f))throw new TypeError("dx must be a number.");if(!Number.isFinite(m))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:l,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(l,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const y=f+p/2,b=m+g/2;e.translate(y,b),e.rotate(this.rotation*Math.PI/180);const w=this.rotation%180===0?1:p/g;e.scale(1/w,w),e.drawImage(k,l,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&On(t.crop,"options.");const i=e.canvas.width,r=e.canvas.height,a=t.rotation??this.rotation,[s,n]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let o,c,l,u,d=t.crop;d&&(d=Nn(d,s,n));const{sx:h,sy:f,sWidth:m,sHeight:p}=this._rotateSourceRegion(t.crop?.left??0,t.crop?.top??0,t.crop?.width??s,t.crop?.height??n,a);if("fill"===t.fit)o=0,c=0,l=i,u=r;else{const[e,a]=t.crop?[t.crop.width,t.crop.height]:[s,n],d="contain"===t.fit?Math.min(i/e,r/a):Math.max(i/e,r/a);l=e*d,u=a*d,o=(i-l)/2,c=(r-u)/2}e.save();const g=a%180===0?1:l/u;e.translate(i/2,r/2),e.rotate(a*Math.PI/180),e.scale(1/g,g),e.translate(-i/2,-r/2),e.drawImage(this.toCanvasImageSource(),h,f,m,p,o,c,l,u),e.restore()}_rotateSourceRegion(e,t,i,r,a){return 90===a?[e,t,i,r]=[t,this.squarePixelHeight-e-i,r,i]:180===a?[e,t]=[this.squarePixelWidth-e-i,this.squarePixelHeight-t-r]:270===a&&([e,t,i,r]=[this.squarePixelWidth-t-r,e,r,i]),{sx:e,sy:t,sWidth:i,sHeight:r}}_drawWithFitAndMipmapping(e,t,i){const r=e.width,a=e.height,[s,n]=i.rotation%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],o=i.crop?i.crop.width:s,c=i.crop?i.crop.height:n;let l=0;2*r0?An(u,d):{canvas:e,context:t,isNew:i.targetIsFresh};f.imageSmoothingQuality="high",i.fillBlack?(f.fillStyle="black",f.fillRect(0,0,u,d)):m||f.clearRect(0,0,u,d),this.drawWithFit(f,{fit:i.fit,rotation:i.rotation,crop:i.crop}),f.globalCompositeOperation="copy";for(let p=l;p>1;p--){const e=r*2**p,t=a*2**p;f.drawImage(h,0,0,e,t,0,0,e/2,t/2)}f.globalCompositeOperation="source-over",l>0&&(t.imageSmoothingQuality="high",t.globalCompositeOperation="copy",t.drawImage(h,0,0,2*r,2*a,0,0,r,a),t.globalCompositeOperation="source-over")}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(E(null!==this._data),this._data instanceof xn||this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}async transform(e){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.width&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(void 0!==e.height&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(void 0!==e.roundDimensionsTo&&(!Number.isInteger(e.roundDimensionsTo)||e.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(void 0!==e.fit&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==e.width&&void 0!==e.height&&void 0===e.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==e.rotate&&![0,90,180,270].includes(e.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(void 0!==e.crop&&On(e.crop,"options."),void 0!==e.alpha&&!["keep","discard"].includes(e.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");const t=_(this.rotation+(e.rotate??0)),[i,r]=t%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let a=e.crop;a&&(a=Nn(a,i,r));const s=a?a.width:i,n=a?a.height:r,o=s/n;let c,l;void 0!==e.width&&void 0===e.height?(c=e.width,l=c/o):void 0===e.width&&void 0!==e.height?(l=e.height,c=l*o):void 0!==e.width&&void 0!==e.height?(c=e.width,l=e.height):(c=s,l=n),c=he(c,e.roundDimensionsTo??1),l=he(l,e.roundDimensionsTo??1);const u={width:c,height:l,fit:e.fit??"fill",rotation:t,crop:a??{left:0,top:0,width:i,height:r},alpha:e.alpha??"keep"};for(const m of _n){let e=m(this,u);if(Re(e)&&(e=await e),null!==e)return e}const{canvas:d,context:h,isNew:f}=An(u.width,u.height);return this._drawWithFitAndMipmapping(d,h,{fit:u.fit,rotation:u.rotation,crop:u.crop,targetIsFresh:f,fillBlack:"discard"===u.alpha}),new En(d,{timestamp:this.timestamp,duration:this.duration,rotation:0})}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}setEncodeOptions(e){if(!e||"object"!==typeof e)throw new TypeError("newEncodeOptions must be an object.");this.encodeOptions=e}[Symbol.dispose](){this.close()}}const _n=[],Rn=[];let Fn=0;const An=(e,t)=>{for(const a of Rn)if(a.canvas.width===e&&a.canvas.height===t)return a.age=Fn++,{canvas:a.canvas,context:a.context,isNew:!1};let i;if("undefined"!==typeof OffscreenCanvas)i=new OffscreenCanvas(e,t);else{if("undefined"===typeof window||"undefined"===typeof document)throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");i=document.createElement("canvas"),i.width=e,i.height=t}const r=i.getContext("2d",{alpha:!0,willReadFrequently:!1});if(!r)throw new Error("The '2d' canvas context is required to transform VideoSamples. Register a custom transformer using registerVideoSampleTransformer to work around this limitation.");return Rn.length>=3&&Rn.splice(Le(Rn,e=>e.age),1),Rn.push({canvas:i,context:r,age:Fn++}),{canvas:i,context:r,isNew:!0}};class Dn{constructor(e){if(void 0!==e){if(!e||"object"!==typeof e)throw new TypeError("init.colorSpace, when provided, must be an object.");const t=Object.keys(L);if(null!=e.primaries&&!t.includes(e.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${t.join(", ")}.`);const i=Object.keys(q);if(null!=e.transfer&&!i.includes(e.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${i.join(", ")}.`);const r=Object.keys(H);if(null!=e.matrix&&!r.includes(e.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${r.join(", ")}.`);if(null!=e.fullRange&&"boolean"!==typeof e.fullRange)throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}this.primaries=e?.primaries??null,this.transfer=e?.transfer??null,this.matrix=e?.matrix??null,this.fullRange=e?.fullRange??null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const Mn=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,Nn=(e,t,i)=>{const r=Math.min(e.left,t),a=Math.min(e.top,i),s=Math.min(e.width,t-r),n=Math.min(e.height,i-a);return E(s>=0),E(n>=0),{left:r,top:a,width:s,height:n}},On=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},zn=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},Ln=(e,t,i)=>{const r=Un(e),a=[];let s=0;for(const n of r){const e=Math.ceil(t/n.widthDivisor),r=Math.ceil(i/n.heightDivisor),o=e*n.sampleBytes,c=o*r;a.push({offset:s,stride:o}),s+=c}return a},Un=e=>{const t=(e,t,i,r,a)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:i,heightDivisor:r},{sampleBytes:t,widthDivisor:i,heightDivisor:r}];return a&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:se(e),E(!1)}},qn=(e,t)=>{const i={left:0,top:0,width:e.codedWidth,height:e.codedHeight},r=t.rect,a=Wn(i,r,e.codedWidth,e.codedHeight,e.format),s=t.layout;let n;if(t.format&&t.format!==e.format){if(!["RGBA","RGBX","BGRA","BGRX"].includes(t.format))throw new Error("NotSupportedError: Invalid destination format.");n=t.format}else n=e.format;return Vn(a,n,s)},Wn=(e,t,i,r,a)=>{const s={...e};if(void 0!==t){if(0===t.width||0===t.height)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>i)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");s.x=t.x||0,s.y=t.y||0,s.width=t.width||0,s.height=t.height||0}if(!Hn(a,s))throw new TypeError("visibleRect alignment is invalid for the format.");return s},Hn=(e,t)=>{if(null===e)return!0;const i=Un(e);for(let r=0;r{const r=Un(t),a=r.length;if(void 0!==i&&i.length!==a)throw new TypeError(`Layout must have ${a} planes.`);let s=0;const n=[],o=[];for(let c=0;c4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(e?.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/($n(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let i;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)i=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");i=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const r=this.numberOfFrames*this.numberOfChannels*$n(this.format);if(i.byteLength=this.numberOfFrames)throw new RangeError("frameOffset out of range");const r=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-i;if(r>this.numberOfFrames-i)throw new RangeError("frameCount out of range");const a=$n(t),s=Gn(t);if(s&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!s&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(s?r:r*this.numberOfChannels)*a}copyTo(e,t){if(!X(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!jn.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{format:i,frameCount:r,frameOffset:a}=t;let{planeIndex:s}=t,n=this.format;const o=i??this.format;if(!o)throw new Error("Destination format not determined");const c=this.numberOfFrames,l=this.numberOfChannels,u=a??0;if(u>=c)throw new RangeError("frameOffset out of range");const d=void 0!==r?r:c-u;if(d>c-u)throw new RangeError("frameCount out of range");const h=$n(o),f=Gn(o);if(f&&s>=l)throw new RangeError("planeIndex out of range");if(!f&&0!==s)throw new RangeError("planeIndex out of range");const m=(f?d:d*l)*h;if(e.byteLength2&&o!==n)return void Zn(this._data,p,n,o,l,s,u,d);try{return void this._data.copyTo(e,{planeIndex:s,frameOffset:u,frameCount:d,format:o})}catch(S){if("f32-planar"===o)throw S;n="f32-planar"}}const k=Qn(n),y=$n(n),b=Gn(n);let w;if(this._data instanceof Kn){const e=e=>{const t=this._data.getDataPlane(e);if(!(t instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");const i=c*y*(b?1:l);if(t.byteLength!==i)throw new TypeError(`Data plane ${e} has invalid size. Expected exactly ${i} bytes, got ${t.byteLength} bytes.`);return t};if(b)if(f)w=e(s),s=0;else{w=new Uint8Array(c*y*l);for(let t=0;tthis.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t0)for(let r=0;r0&&this.copyTo(a,{planeIndex:0,format:this.format,frameOffset:e,frameCount:i});return new Xn({data:a,format:this.format,sampleRate:this.sampleRate,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp+e/this.sampleRate})}close(){this._closed||(In?.unregister(this),this._data instanceof Kn?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Jn(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof Kn?this._createAudioDataFromData():Jn(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(Gn(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let i=0;i0;){const a=Math.min(s,o),c=new Float32Array(i*a);for(let t=0;t0;){const a=Math.min(s,o),l=new Float32Array(i*a);for(let t=0;t{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},Gn=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},Qn=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},Yn=e=>{switch(e){case"u8":case"u8-planar":return(e,t,i)=>e.setUint8(t,le(127.5*(i+1),0,255));case"s16":case"s16-planar":return(e,t,i)=>e.setInt16(t,le(Math.round(32767*i),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,i)=>e.setInt32(t,le(Math.round(2147483647*i),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,i)=>e.setFloat32(t,i,!0)}},Jn=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,Zn=(e,t,i,r,a,s,n,o)=>{const c=Qn(i),l=Yn(r),u=$n(i),d=$n(r),h=Gn(i);if(Gn(r))if(h){const r=new ArrayBuffer(o*u),a=N(r);e.copyTo(r,{planeIndex:s,frameOffset:n,frameCount:o,format:i});for(let e=0;e{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(void 0!==e.skipLiveWait&&"boolean"!==typeof e.skipLiveWait)throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},ro=e=>{if(!Ne(e))throw new TypeError("timestamp must be a number.")},ao=(e,t,i)=>i.verifyKeyPackets?t.then(async t=>{if(!t||"delta"===t.type)return t;const i=await e.determinePacketType(t);return i&&(t.type=i),t}):t;class so{constructor(e){if(!(e instanceof To))throw new TypeError("track must be an InputTrack.");this._track=e}async getFirstPacket(e={}){if(io(e),this._track.input._disposed)throw new Oo;return ao(this._track,this._track._backing.getFirstPacket(e),e)}async getFirstKeyPacket(e={}){io(e);const t=await this.getFirstPacket(e);return t?"key"===t.type?t:this.getNextKeyPacket(t,e):null}async getPacket(e,t={}){if(ro(e),io(t),this._track.input._disposed)throw new Oo;return ao(this._track,this._track._backing.getPacket(e,t),t)}async getNextPacket(e,t={}){if(!(e instanceof Wi))throw new TypeError("packet must be an EncodedPacket.");if(io(t),this._track.input._disposed)throw new Oo;return ao(this._track,this._track._backing.getNextPacket(e,t),t)}async getKeyPacket(e,t={}){if(ro(e),io(t),this._track.input._disposed)throw new Oo;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const i=await this._track._backing.getKeyPacket(e,t);if(!i)return i;E("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getKeyPacket(i.timestamp-1/await this._track.getTimeResolution(),t):i}async getNextKeyPacket(e,t={}){if(!(e instanceof Wi))throw new TypeError("packet must be an EncodedPacket.");if(io(t),this._track.input._disposed)throw new Oo;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const i=await this._track._backing.getNextKeyPacket(e,t);if(!i)return i;E("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getNextKeyPacket(i,t):i}packets(e,t,i={}){if(void 0!==e&&!(e instanceof Wi))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!i?.metadataOnly)throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof Wi))throw new TypeError("endPacket must be an EncodedPacket.");if(io(i),this._track.input._disposed)throw new Oo;const r=[];let{promise:a,resolve:s}=te(),{promise:n,resolve:o}=te(),c=!1,l=!1,u=null,d=!1;const h=[],f=()=>Math.max(2,h.length);(async()=>{let u=e??await this.getFirstPacket(i);for(;u&&!l&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=t?.sequenceNumber);)r.length>f()?(({promise:n,resolve:o}=te()),await n):(r.push(u),s(),({promise:a,resolve:s}=te()),u=await this.getNextPacket(u,i));c=!0,s()})().catch(e=>{d||(u=e,d=!0,s())});const m=this._track;return{async next(){for(;;){if(m.input._disposed)throw new Oo;if(l)return{value:void 0,done:!0};if(d)throw u;if(r.length>0){const e=r.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};await a}},return:async()=>(l=!0,o(),s(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}class no{constructor(e,t){this.onSample=e,this.onError=t}}class oo{mediaSamplesInRange(e=-1/0,t=1/0,i){ro(e),ro(t);const r=[];let a=!1,s=null,{promise:n,resolve:o}=te(),{promise:c,resolve:l}=te(),u=!1,d=!1,h=!1,f=null,m=null,p=!1;const g={...i,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{f=await this._createDecoder(i=>{l(),i.timestamp>=t&&(d=!0),d?i.close():(s&&(i.timestamp>e?(r.push(s),a=!0):s.close()),i.timestamp>=e&&(r.push(i),a=!0),s=a?null:i,r.length>0&&(o(),({promise:n,resolve:o}=te())))},e=>{p||(m=e,p=!0,o())});const i=this._createPacketSink(),k=await i.getKeyPacket(e,g)??await i.getFirstKeyPacket(g);let y=k;const b=i.packets(k??void 0,void 0,g);for(await b.next();y&&!d&&!this._track.input._disposed;){const e=co(r.length);if(r.length+f.getDecodeQueueSize()>e){({promise:c,resolve:l}=te()),await c;continue}f.decode(y);const t=await b.next();if(t.done)break;y=t.value}await b.return(),h||this._track.input._disposed||await f.flush(),!a&&s&&r.push(s),u=!0,o()})().catch(e=>{p||(m=e,p=!0,o())}).finally(()=>{f?.close()});const k=this._track,y=()=>{s?.close();for(const e of r)e.close()};return{async next(){for(;;){if(k.input._disposed)throw h=!0,d=!0,y(),new Oo;if(h)return{value:void 0,done:!0};if(p)throw h=!0,d=!0,y(),m;if(r.length>0){const e=r.shift();return l(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};await n}},return:async()=>(h=!0,d=!0,l(),o(),y(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e,t){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const i=async function*(e){Symbol.iterator in e?yield*e[Symbol.iterator]():yield*e[Symbol.asyncIterator]()}(e),r=[],a=[];let{promise:s,resolve:n}=te(),{promise:o,resolve:c}=te(),l=!1,u=!1,d=null,h=null,f=!1;const m=e=>{a.push(e),n(),({promise:s,resolve:n}=te())},p={...t,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{d=await this._createDecoder(e=>{if(c(),u)return void e.close();let t=0;for(;r.length>0&&e.timestamp-r[0]>-1e-10;)t++,r.shift();if(t>0)for(let i=0;i{f||(h=e,f=!0,n())});const e=this._createPacketSink();let t=null,s=null,g=-1;const k=async()=>{E(s),E(d);let t=s;for(d.decode(t);t.sequenceNumberi&&!u;)({promise:o,resolve:c}=te()),await o;if(u)break;const r=await e.getNextPacket(t,p);E(r),d.decode(r),t=r}g=-1},y=async()=>{E(d),await d.flush();for(let e=0;e{f||(h=e,f=!0,n())}).finally(()=>{d?.close()});const g=this._track,k=()=>{for(const e of a)e?.close()};return{async next(){for(;;){if(g.input._disposed)throw u=!0,k(),new Oo;if(u)return{value:void 0,done:!0};if(f)throw u=!0,k(),h;if(a.length>0){const e=a.shift();return E(void 0!==e),c(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};await s}},return:async()=>(u=!0,c(),n(),k(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}const co=e=>0===e?40:8;class lo extends no{constructor(e,t,i,r,a,s){super(e,t),this.codec=i,this.decoderConfig=r,this.rotation=a,this.timeResolution=s,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new Se,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1,this.finalSamples=[],this.mergeAlphaPromises=[];const n=eo.find(e=>e.supports(i,r));if(n)this.customDecoder=new n,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof En))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();E(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if(Be()){if("avc"===i&&this.decoderConfig.description){const e=yt(M(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=wt(e.sequenceParameterSets[0]);t&&(0===t.frameMbsOnlyFlag&&(this.decoderConfig={...this.decoderConfig,hardwareAcceleration:"prefer-software"}),0!==t.maxDecFrameBuffering&&1!==t.bitstreamRestrictionFlag&&(e.sequenceParameterSets[0]=St(t),this.decoderConfig={...this.decoderConfig,description:kt(e)}))}}j(this.decoderConfig.colorSpace)||(this.decoderConfig={...this.decoderConfig,colorSpace:{primaries:this.decoderConfig.colorSpace?.primaries??"bt709",matrix:this.decoderConfig.colorSpace?.matrix??"bt709",transfer:this.decoderConfig.colorSpace?.transfer??"bt709",fullRange:this.decoderConfig.colorSpace?.fullRange??!1}})}const t=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(E(this.decoder),Math.max(this.decoder.decodeQueueSize,this.alphaDecoder?.decodeQueueSize??0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--);else{if(E(this.decoder),Pe()||ee(this.inputTimestamps,e.timestamp,e=>e),Be()&&0===this.currentPacketIndex)if("avc"===this.codec){const t=[];let i=!1;for(const a of ut(e.data,this.decoderConfig)){const r=dt(e.data[a.offset]);if(i||(i=r>=1&&r<=5),r===at.AUD){if(i)break;t.length=0}r>=20&&r<=31||t.push(e.data.subarray(a.offset,a.offset+a.length))}if(!this.decoderConfig.description)for(let e=0;e{if(t.description){const i=3&M(t.description)[4];return pt(e,i+1)}return mt(e)})(t,this.decoderConfig);e=new Wi(r,e.type,e.timestamp,e.duration)}else if("hevc"===this.codec){const t=Nt(e.data,this.decoderConfig);t&&(e=new Wi(t,e.type,e.timestamp,e.duration))}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha)return void this.pushNullAlphaFrame();if(this.merger||(this.merger=new ho),!this.alphaDecoder){const e=e=>{if(this.colorQueue.length>0){const t=this.colorQueue.shift();E(void 0!==t),this.mergeAlpha(t,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();E(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=Vt(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(t??e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(const t of vt(e,this.decoderConfig)){const i=Pt(e[t.offset]);if(i===nt.RASL_N||i===nt.RASL_R)return!0}return!1}sampleHandler(e){if(Pe()){if(this.sampleQueue.length>0&&e.timestamp>=R(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}ee(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();E(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}async mergeAlpha(e,t){const i=te();this.mergeAlphaPromises.push(i.promise);const r={sample:null};this.finalSamples.push(r);try{if(t){E(this.merger);const i=await this.merger.merge(e,t);r.sample=new En(i)}else r.sample=new En(e);for(;this.finalSamples.length>0&&null!==this.finalSamples[0].sample;){const e=this.finalSamples.shift();this.sampleHandler(e.sample)}}catch(a){ie(this.finalSamples,r),this.onError(a)}finally{ie(this.mergeAlphaPromises,i.promise),i.resolve()}}async flush(){if(this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(E(this.decoder),await Promise.all([this.decoder.flush(),this.alphaDecoder?.flush()]),await Promise.all(this.mergeAlphaPromises),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),Pe()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(E(this.decoder),"closed"!==this.decoder.state&&this.decoder.close(),this.alphaDecoder&&"closed"!==this.alphaDecoder.state&&this.alphaDecoder.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.merger?.close());for(const e of this.sampleQueue)e.close();this.sampleQueue.length=0}}let uo=null;class ho{constructor(){this.workers=[],this.nextWorkerIndex=0,this.pendingRequests=new Map,this.nextRequestId=0}merge(e,t){if(0===this.workers.length){if(!uo){const e=new Blob([`(${fo.toString()})()`],{type:"application/javascript"});uo=URL.createObjectURL(e)}const e=le(navigator.hardwareConcurrency,1,4);for(let t=0;t{const t=e.data,i=this.pendingRequests.get(t.id);i&&(this.pendingRequests.delete(t.id),"error"in t?i.reject(new Error(t.error)):i.resolve(t.frame))}),e.addEventListener("error",e=>{const t=new Error(e.message||"Color/alpha merge worker error.");for(const i of this.pendingRequests.values())i.reject(t);this.pendingRequests.clear()}),this.workers.push(e)}}const i=this.nextRequestId++,r=te();this.pendingRequests.set(i,r);const a=this.workers[this.nextWorkerIndex];return this.nextWorkerIndex=(this.nextWorkerIndex+1)%this.workers.length,a.postMessage({id:i,color:e,alpha:t},{transfer:[e,t]}),r.promise}close(){for(const t of this.workers)t.terminate();this.workers.length=0;const e=new Error("Color/alpha merger closed.");for(const t of this.pendingRequests.values())t.reject(e);this.pendingRequests.clear()}}const fo=()=>{let e=null,t=null,i=Promise.resolve();self.addEventListener("message",e=>{const{id:t,color:a,alpha:s}=e.data;i=i.then(async()=>{try{const e=await r(a,s);self.postMessage({id:t,frame:e},{transfer:[e]})}catch(e){self.postMessage({id:t,error:e.message})}finally{a.close(),s.close()}})});const r=async(e,t)=>{const i=e.format,r=t.format;if(!i||!r)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");const o=i.includes("P10"),c=i.includes("P12"),l=r.includes("P10"),u=r.includes("P12");if(l!==o||u!==c)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${i}', alpha: '${r}').`);if("RGBX"===i||"RGBA"===i||"BGRX"===i||"BGRA"===i)return await a(e,t,i);if("I420"===i||"I420P10"===i||"I420P12"===i||"I422"===i||"I422P10"===i||"I422P12"===i||"I444"===i||"I444P10"===i||"I444P12"===i)return await s(e,t,i);if("NV12"===i)return await n(e,t);throw new Error(`CPU color/alpha merging does not support format '${i}'.`)},a=async(e,t,i)=>{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=r*a,n=new Uint8Array(4*s);await e.copyTo(n);const c=await o(t,r,a,1);for(let o=0,u=3;o{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=i.includes("P10"),n=i.includes("P12"),c=s||n?2:1;let l,u;i.startsWith("I420")?(l=Math.ceil(r/2),u=Math.ceil(a/2)):i.startsWith("I422")?(l=Math.ceil(r/2),u=a):(l=r,u=a);const d=r*a,h=d*c,f=l*u*c,m=new Uint8Array(h+2*f+d*c);await e.copyTo(m);const p=await o(t,r,a,c),g=h+2*f;m.set(p,g);const k={format:i.slice(0,4)+"A"+i.slice(4),codedWidth:r,codedHeight:a,timestamp:e.timestamp,duration:e.duration??void 0,transfer:[m.buffer]};return new VideoFrame(m,k)},n=async(e,i)=>{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=r*a,n=Math.ceil(r/2)*Math.ceil(a/2),c=e.allocationSize();t&&t.byteLength===c||(t=new Uint8Array(c)),await e.copyTo(t);const l=new Uint8Array(s+2*n+s);l.set(t.subarray(0,s),0);const u=s,d=s+n,h=s;for(let o=0;o{const s=t.allocationSize();e&&e.byteLength===s||(e=new Uint8Array(s)),await t.copyTo(e);const n=t.format;if("RGBA"===n||"BGRA"===n||"RGBX"===n||"BGRX"===n){const t="RGBA"===n||"RGBX"===n?0:2,a=i*r;for(let i=0;i{if(!e||"object"!==typeof e)throw new TypeError("decoderOptions must be an object.");if(void 0!==e.hardwareAcceleration&&!["no-preference","prefer-hardware","prefer-software"].includes(e.hardwareAcceleration))throw new TypeError("decoderOptions.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(void 0!==e.optimizeForLatency&&"boolean"!==typeof e.optimizeForLatency)throw new TypeError("decoderOptions.optimizeForLatency, when provided, must be a boolean.")};class po extends oo{constructor(e,t={}){if(!(e instanceof Po))throw new TypeError("videoTrack must be an InputVideoTrack.");mo(t),super(),this._track=e,this._decoderOptions=t}async _createDecoder(e,t){if(!(await this._track.canDecode())){if("undefined"===typeof VideoDecoder)throw new Error(Ee("VideoDecoder"));throw new Error("This video track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=await this._track.getCodec(),r=await this._track.getRotation();let a=await this._track.getDecoderConfig();const s=await this._track.getTimeResolution();return E(i&&a),a={...a,hardwareAcceleration:this._decoderOptions.hardwareAcceleration,optimizeForLatency:this._decoderOptions.optimizeForLatency},new lo(e,t,i,a,r,s)}_createPacketSink(){return new so(this._track)}async getSample(e,t={}){ro(e);for await(const i of this.mediaSamplesAtTimestamps([e],t))return i;throw new Error("Internal error: Iterator returned nothing.")}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class go{constructor(e,t={}){if(this._rotation=0,this._initPromise=null,this._nextCanvasIndex=0,!(e instanceof Po))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&On(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");void 0!==t.decoderOptions&&mo(t.decoderOptions),this._videoTrack=e,this._alpha=t.alpha??!1,this._options=t,this._fit=t.fit??"fill",this._videoSampleSink=new po(e,t.decoderOptions),this._canvasPool=Array.from({length:t.poolSize??0},()=>null)}_ensureInit(){return this._initPromise??(this._initPromise=(async()=>{const e=this._options,t=this._videoTrack,i=e.rotation??await t.getRotation(),r=await t.getSquarePixelWidth(),a=await t.getSquarePixelHeight(),[s,n]=i%180===0?[r,a]:[a,r];let o=e.crop;o&&(o=Nn(o,s,n));let[c,l]=o?[o.width,o.height]:[s,n];const u=c/l;void 0!==e.width&&void 0===e.height?(c=e.width,l=Math.round(c/u)):void 0===e.width&&void 0!==e.height?(l=e.height,c=Math.round(l*u)):void 0!==e.width&&void 0!==e.height&&(c=e.width,l=e.height),this._width=c,this._height=l,this._rotation=i,this._crop=o})())}_videoSampleToWrappedCanvas(e){const t=this._width,i=this._height;let r=this._canvasPool[this._nextCanvasIndex],a=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=t,r.height=i):r=new OffscreenCanvas(t,i),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),a=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const s=r.getContext("2d",{alpha:this._alpha||xe()});E(s),e._drawWithFitAndMipmapping(r,s,{fit:this._fit,rotation:this._rotation,crop:this._crop,targetIsFresh:a,fillBlack:!this._alpha&&xe()});const n={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),n}async getCanvas(e,t){ro(e),await this._ensureInit();const i=await this._videoSampleSink.getSample(e,t);return i&&this._videoSampleToWrappedCanvas(i)}async*canvases(e,t,i){await this._ensureInit(),yield*ce(this._videoSampleSink.samples(e,t,i),e=>this._videoSampleToWrappedCanvas(e))}async*canvasesAtTimestamps(e,t){await this._ensureInit(),yield*ce(this._videoSampleSink.samplesAtTimestamps(e,t),e=>e&&this._videoSampleToWrappedCanvas(e))}}class ko extends no{constructor(e,t,i,r){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new Se,this.customDecoderQueueSize=0,this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0;const a=t=>{let i=t.timestamp;null!==this.expectedFirstTimestamp&&null===this.currentTimestamp&&(this.timestampOffset=this.expectedFirstTimestamp-i),i+=this.timestampOffset,(null===this.currentTimestamp||Math.abs(i-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=i);const a=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const s=r.sampleRate;t.setTimestamp(Math.round(a*s)/s),e(t)},s=to.find(e=>e.supports(i,r));if(s)this.customDecoder=new s,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof Xn))throw new TypeError("The argument passed to onSample must be an AudioSample.");a(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{a(new Xn(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(r)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(E(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--)):(E(this.decoder),this.expectedFirstTimestamp??(this.expectedFirstTimestamp=e.timestamp),this.decoder.decode(e.toEncodedAudioChunk()))}async flush(){this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(E(this.decoder),await this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(E(this.decoder),"closed"!==this.decoder.state&&this.decoder.close())}}class yo extends no{constructor(e,t,i){super(e,t),this.decoderConfig=i,this.currentTimestamp=null,E(pi.includes(i.codec)),this.codec=i.codec;const{dataType:r,sampleSize:a,littleEndian:s}=Bi(this.codec);switch(this.inputSampleSize=a,a){case 1:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint8(t)-128:"signed"===r?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===r?this.readInputValue=(e,t)=>(e=>{let t=0,i=0,r=~e;128&r&&(r&=-129,t=-1),i=5+((240&r)>>4);const a=(1<(e=>{let t=0,i=0,r=85^e;128&r&&(r&=-129,t=-1),i=4+((240&r)>>4);let a=0;return a=4!==i?1<e.getUint16(t,s)-32768:"signed"===r?this.readInputValue=(e,t)=>e.getInt16(t,s):E(!1);break;case 3:"unsigned"===r?this.readInputValue=(e,t)=>ne(e,t,s)-2**23:"signed"===r?this.readInputValue=(e,t)=>((e,t,i)=>ne(e,t,i)<<8>>8)(e,t,s):E(!1);break;case 4:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint32(t,s)-2**31:"signed"===r?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===r?this.readInputValue=(e,t)=>e.getFloat32(t,s):E(!1);break;case 8:"float"===r?this.readInputValue=(e,t)=>e.getFloat64(t,s):E(!1);break;default:se(a),E(!1)}switch(a){case 1:"ulaw"===r||"alaw"===r?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,i)=>e.setUint8(t,i+128));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i<<8,!0);break;case 4:this.outputSampleSize=4,"float"===r?(this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0);break;default:se(a),E(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=N(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,r=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,a=new ArrayBuffer(r),s=new DataView(a);for(let l=0;l=n)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=n;const c=new Xn({format:this.outputFormat,data:a,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:o});this.onSample(c)}async flush(){}close(){}}class bo extends oo{constructor(e){if(!(e instanceof Io))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}async _createDecoder(e,t){if(!(await this._track.canDecode())){if("undefined"===typeof AudioDecoder)throw new Error(Ee("AudioDecoder"));throw new Error("This audio track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=await this._track.getCodec(),r=await this._track.getDecoderConfig();return E(i&&r),pi.includes(r.codec)?new yo(e,t,r):new ko(e,t,i,r)}_createPacketSink(){return new so(this._track)}async getSample(e,t={}){ro(e);for await(const i of this.mediaSamplesAtTimestamps([e],t))return i;throw new Error("Internal error: Iterator returned nothing.")}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class wo{constructor(e){if(!(e instanceof Io))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new bo(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}async getBuffer(e,t){ro(e);const i=await this._audioSampleSink.getSample(e,t);return i&&this._audioSampleToWrappedArrayBuffer(i)}buffers(e,t,i){return ce(this._audioSampleSink.samples(e,t,i),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e,t){return ce(this._audioSampleSink.samplesAtTimestamps(e,t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class To{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof Po}isAudioTrack(){return this instanceof Io}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}async getInternalCodecId(){return this._backing.getInternalCodecId()}get internalCodecId(){return So(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}async getLanguageCode(){return this._backing.getLanguageCode()}get languageCode(){return So(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}async getName(){return this._backing.getName()}get name(){return So(this._backing.getName(),"name","getName")}async getTimeResolution(){return this._backing.getTimeResolution()}get timeResolution(){return So(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}async isRelativeToUnixEpoch(){return this._backing.isRelativeToUnixEpoch()}async getUnixTimeForTimestamp(e){return this._backing.getUnixTimeForTimestamp(e)}async hasUnixTimeMapping(){return null!==await this._backing.getUnixTimeForTimestamp(await this.getFirstTimestamp())}async getDisposition(){return this._backing.getDisposition()}get disposition(){return So(this._backing.getDisposition(),"disposition","getDisposition")}async getBitrate(){return this._backing.getBitrate()}async getAverageBitrate(){return this._backing.getAverageBitrate()}async getFirstTimestamp(){const e=await this._backing.getFirstPacket({metadataOnly:!0});return e?.timestamp??0}async computeDuration(e){const t=await this._backing.getPacket(1/0,{metadataOnly:!0,...e});return fe((t?.timestamp??0)+(t?.duration??0),await this.getTimeResolution())}async getDurationFromMetadata(e={}){return this._backing.getDurationFromMetadata(e)}async computePacketStats(e=1/0,t){const i=new so(this);let r=1/0,a=-1/0,s=0,n=0;for await(const o of i.packets(void 0,void 0,{metadataOnly:!0,...t})){if(s>=e&&o.timestamp>=a)break;r=Math.min(r,o.timestamp),a=Math.max(a,o.timestamp+o.duration),s++,n+=o.byteLength}return{packetCount:s,averagePacketRate:s?Number((s/(a-r)).toPrecision(16)):0,averageBitrate:s?Number((8*n/(a-r)).toPrecision(16)):0}}async isLive(){return null!==await this._backing.getLiveRefreshInterval()}async getLiveRefreshInterval(){return this._backing.getLiveRefreshInterval()}canBePairedWith(e){if(!(e instanceof To))throw new TypeError("other must be an InputTrack.");return this.input===e.input&&this!==e&&0n!==(this._backing.getPairingMask()&e._backing.getPairingMask())}async getPairableTracks(e){return this.input.getTracks(Eo({filter:e=>e.canBePairedWith(this)},e))}async getPairableVideoTracks(e){return this.input.getVideoTracks(Eo({filter:e=>e.canBePairedWith(this)},e))}async getPairableAudioTracks(e){return this.input.getAudioTracks(Eo({filter:e=>e.canBePairedWith(this)},e))}async getPrimaryPairableVideoTrack(e){return this.input.getPrimaryVideoTrack(Eo({filter:e=>e.canBePairedWith(this)},e))}async getPrimaryPairableAudioTrack(e){return this.input.getPrimaryAudioTrack(Eo({filter:e=>e.canBePairedWith(this)},e))}async hasPairableTrack(e){e&&(e=vo(e));const t=await this.input.getTracks();for(const i of t)if(this.canBePairedWith(i)&&(!e||await e(i)))return!0;return!1}hasPairableVideoTrack(e){return e&&(e=vo(e)),this.hasPairableTrack(async t=>t.isVideoTrack()&&(!e||await e(t)))}hasPairableAudioTrack(e){return e&&(e=vo(e)),this.hasPairableTrack(async t=>t.isAudioTrack()&&(!e||await e(t)))}}const So=(e,t,i)=>{if(Re(e))throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${i}()' instead.`);return e},vo=e=>{if(void 0!==e&&"function"!==typeof e)throw new TypeError("predicate, when provided, must be a function.");return e?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("predicate must return or resolve to a boolean value.");return e},r=e(t);return Re(r)?r.then(i):i(r)}:void 0};class Po extends To{constructor(e,t){super(e,t),this._pixelAspectRatioCache=null,this._backing=t}get type(){return"video"}async getCodec(){return this._backing.getCodec()}get codec(){return So(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await(this._backing.getHasOnlyKeyPackets?.())??"prores"===await this._backing.getCodec()}async getCodedWidth(){return this._backing.getCodedWidth()}get codedWidth(){return So(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}async getCodedHeight(){return this._backing.getCodedHeight()}get codedHeight(){return So(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}async getRotation(){return this._backing.getRotation()}get rotation(){return So(this._backing.getRotation(),"rotation","getRotation")}async getSquarePixelWidth(){return this._backing.getSquarePixelWidth()}get squarePixelWidth(){return So(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}async getSquarePixelHeight(){return this._backing.getSquarePixelHeight()}get squarePixelHeight(){return So(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}async getPixelAspectRatio(){return this._pixelAspectRatioCache??(this._pixelAspectRatioCache=Ue({num:await this.getSquarePixelWidth()*await this.getCodedHeight(),den:await this.getSquarePixelHeight()*await this.getCodedWidth()}))}get pixelAspectRatio(){return this._pixelAspectRatioCache??(this._pixelAspectRatioCache=Ue({num:So(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*So(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:So(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*So(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")}))}async getDisplayWidth(){const e=await(this._backing.getMetadataDisplayWidth?.());if(null!=e)return e;return await this.getRotation()%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight()}get displayWidth(){const e=this._backing.getMetadataDisplayWidth?.();if(void 0!==e){const t=So(e,"displayWidth","getDisplayWidth");if(null!==t)return t}const t=So(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return So(t,"displayWidth","getDisplayWidth")}async getDisplayHeight(){const e=await(this._backing.getMetadataDisplayHeight?.());if(null!=e)return e;return await this.getRotation()%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth()}get displayHeight(){const e=this._backing.getMetadataDisplayHeight?.();if(void 0!==e){const t=So(e,"displayHeight","getDisplayHeight");if(null!==t)return t}const t=So(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return So(t,"displayHeight","getDisplayHeight")}async getColorSpace(){return this._backing.getColorSpace()}async hasHighDynamicRange(){const e=await this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pq"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix}async canBeTransparent(){return this._backing.canBeTransparent()}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await(this._backing.getMetadataCodecParameterString?.());if(null!=e)return e;const t=await this._backing.getDecoderConfig();return t?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const t=await this._backing.getCodec();if(E(null!==t),eo.some(i=>i.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(await VideoDecoder.isConfigSupported(e)).supported}catch(e){return Ke._error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Wi))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");const t=await this.getCodec();if(null===t)return null;const i=await this.getDecoderConfig();return E(i),Vt(t,i,e.data)}async computeFrameRateMetrics(e={}){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.targetPacketCount&&(!Ne(e.targetPacketCount)||e.targetPacketCount<0))throw new TypeError("options.targetPacketCount must be a non-negative number.");const t=await this.getTimeResolution(),i=e.targetPacketCount??256,r=new so(this),a=[];let s=-1/0,n=0;for await(const I of r.packets(void 0,void 0,{metadataOnly:!0})){if(a.length>=i&&I.timestamp>=s)break;a.push(I.timestamp),s=Math.max(s,I.timestamp),n++}const o=new Float64Array(a.length);for(let I=0;Ie-t),b=k-1>>1,w=k>>1;let T=0,S=0,v=0;for(const I of y)if(v+=f.get(I),0===T&&v>b&&(T=I),v>w){S=I;break}const P=(d/T+d/S)/2;return{underlyingFrameRate:u,bestGuessFrameRate:null!==u?u:Ao(P),minFrameRate:d/p,maxFrameRate:d/m,averageFrameRate:d*k/g,medianFrameRate:P,frameRateIsConstant:null!==u&&1===m&&1===p,probedPacketCount:n}}}class Io extends To{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}async getCodec(){return this._backing.getCodec()}get codec(){return So(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await(this._backing.getHasOnlyKeyPackets?.())??!0}async getNumberOfChannels(){return this._backing.getNumberOfChannels()}get numberOfChannels(){return So(this._backing.getNumberOfChannels(),"numberOfChannels","getNumberOfChannels")}async getSampleRate(){return this._backing.getSampleRate()}get sampleRate(){return So(this._backing.getSampleRate(),"sampleRate","getSampleRate")}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await(this._backing.getMetadataCodecParameterString?.());if(null!=e)return e;const t=await this._backing.getDecoderConfig();return t?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const t=await this._backing.getCodec();if(E(null!==t),to.some(i=>i.supports(t,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof AudioDecoder)return!1;return!0===(await AudioDecoder.isConfigSupported(e)).supported}catch(e){return Ke._error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Wi))throw new TypeError("packet must be an EncodedPacket.");return null===await this.getCodec()?null:"key"}}const xo=e=>-(e??-1/0),Co=e=>-e,Bo=e=>{if("object"!==typeof e||!e)throw new TypeError("query must be an object.");if(void 0!==e.filter&&"function"!==typeof e.filter)throw new TypeError("query.filter, when provided, must be a function.");if(void 0!==e.sortBy&&"function"!==typeof e.sortBy)throw new TypeError("query.sortBy, when provided, must be a function.");return{filter:e.filter?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("query.filter must return or resolve to a boolean.");return e},r=e.filter(t);return Re(r)?r.then(i):i(r)}:void 0,sortBy:e.sortBy?t=>{const i=e=>{if("number"!==typeof e&&(!Array.isArray(e)||!e.every(e=>"number"===typeof e)))throw new TypeError("query.sortBy must return or resolve to a number or an array of numbers.");return e},r=e.sortBy(t);return Re(r)?r.then(i):i(r)}:void 0}},Eo=(e,t)=>({filter:e?.filter||t?.filter?i=>{const r=e?.filter?.(i)??!0,a=e=>!1!==e&&(t?.filter?.(i)??!0);return Re(r)?r.then(a):a(r)}:void 0,sortBy:e?.sortBy||t?.sortBy?i=>{const r=e?.sortBy?.(i)??[],a=t?.sortBy?.(i)??[],s=(e,t)=>[...Array.isArray(e)?e:[e],...Array.isArray(t)?t:[t]];return Re(r)||Re(a)?Promise.all([r,a]).then(([e,t])=>s(e,t)):s(r,a)}:void 0}),_o=async(e,t)=>{let i=e;if(t?.filter){const r=e.map(e=>t.filter(e));if(r.some(e=>Re(e))){const t=await Promise.all(r);i=e.filter((e,i)=>t[i])}else i=e.filter((e,t)=>r[t])}if(!t?.sortBy)return i;const r=i.map(e=>t.sortBy(e)),a=r.some(e=>Re(e))?await Promise.all(r):r;return i.map((e,t)=>({track:e,sortValue:a[t]})).sort((e,t)=>{const i=Array.isArray(e.sortValue)?e.sortValue:[e.sortValue],r=Array.isArray(t.sortValue)?t.sortValue:[t.sortValue],a=Math.max(i.length,r.length);for(let s=0;se.track)},Ro=(e,t)=>{const i=1e6,r=1+1e-9,a=[12,15,20,24e3/1001,24,25,3e4/1001,30,48,50,6e4/1001,60,100,12e4/1001,120,144,240];if(e.length<2)return null;const s=new Float64Array(e.length-1);for(let T=1;T0))return null;s[T-1]=t}const n=s.slice();n.sort();let o=n[Math.floor(.05*n.length)];for(let T=0;T<6;T++){let e=0,t=0;for(const a of s){const i=Math.max(1,Math.round(a/o));Math.abs(a-i*o)>=r||(e+=a,t+=i)}if(0===t)return null;const i=e/t;if(Math.abs(i-o)<=1e-12*Math.max(1,o)){o=i;break}o=i}let c=0,l=0,u=0;for(const T of s){const e=Math.max(1,Math.round(T/o));Math.abs(T-e*o)>=r||(c++,l+=T,u+=e)}if(c/s.length<.98)return null;o=l/u;const d=1/Math.min(u,1e3),h=Math.max(Number.EPSILON,o-d),f=o+d,m=t/f,p=t/h,g=t/o;let k=null,y=1/0;for(const T of a){if(Tp)continue;const e=Math.abs(T/g-1);e{for(let r=1;r<=i;r++){const i=Math.floor(e*r)+1;if(i/r{const t=[24/1.001,30/1.001,60/1.001,120/1.001],i=[12,15,20,24,25,30,48,50,60,100,120,144,240];for(const s of t)if(Math.abs(s/e-1)<=5e-4)return s;let r=e,a=1/0;for(const s of i){const t=Math.abs(s/e-1);t<=.025&&t!(e instanceof Gs)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(e.source instanceof Ts||e.source instanceof Ss))throw new TypeError("options.source must be a Source or SourceRef.");if(e.source instanceof Ts&&e.source._disposed)throw new TypeError("options.source must not be a disposed Source.");if(void 0!==e.initInput&&!(e.initInput instanceof Mo))throw new TypeError("options.initInput, when provided, must be an Input.");void 0!==e.formatOptions&&((e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(`${t}, when provided, must be an object.`);if(void 0!==e.isobmff){if(!e.isobmff||"object"!==typeof e.isobmff)throw new TypeError(`${t}.isobmff, when provided, must be an object.`);if(void 0!==e.isobmff.resolveKeyId&&"function"!==typeof e.isobmff.resolveKeyId)throw new TypeError(`${t}.isobmff.resolveKeyId, when provided, must be a function.`)}if(void 0!==e.hls){if(!e.hls||"object"!==typeof e.hls)throw new TypeError(`${t}.hls, when provided, must be an object.`);if(void 0!==e.hls.offsetTimestampsByDateTime&&"boolean"!==typeof e.hls.offsetTimestampsByDateTime)throw new TypeError(`${t}.hls.offsetTimestampsByDateTime, when provided, must be a boolean.`)}})(e.formatOptions,"formatOptions"),this._formats=e.formats,this._initInput=e.initInput??null,this._formatOptions=e.formatOptions??{},e.source instanceof Ts?this._rootRef=e.source.ref():this._rootRef=e.source,this._sourceRefs.push(this._rootRef)}get _rootSource(){return this._rootRef.source}async _getSourceUncached(e){E(this._rootSource instanceof vs);const t=await this._rootSource._resolveRequest(e);return this._emit("source",{source:t.source,request:e,isRoot:e.isRoot}),t}_getSourceCached(e,t=1){const i=this._sourceCache.find(i=>i.cacheGroup===t&&Ps(i.request,e));if(i)return i.age++,Promise.resolve(i.sourceRef.source.ref());const r=this._sourceCachePromises.find(i=>i.cacheGroup===t&&Ps(i.request,e));if(r)return r.promise.then(e=>e.sourceRef.source.ref());const a=(async()=>{const i=await this._getSourceUncached(e);if(ze(this._sourceCache,e=>e.cacheGroup===t&&1===e.sourceRef.source._refCount)>=4){const e=Le(this._sourceCache,e=>e.cacheGroup===t&&1===e.sourceRef.source._refCount?e.age:1/0);E(-1!==e);const i=this._sourceCache[e];this._sourceCache.splice(e,1),i.sourceRef.free(),ie(this._sourceRefs,i.sourceRef)}this._sourceRefs.push(i);const r=this._sourceCachePromises.findIndex(t=>t.request===e);E(-1!==r),this._sourceCachePromises.splice(r,1);return{request:e,sourceRef:i,age:this._nextSourceCacheAge++,cacheGroup:t}})();return this._sourceCachePromises.push({request:e,cacheGroup:t,promise:a}),a.then(e=>{const t=e.sourceRef.source.ref();return this._sourceCache.push(e),t})}_getDemuxer(){return this._demuxerPromise??(this._demuxerPromise=(async()=>{this._reader=new zo(this._rootSource),this._emit("source",{source:this._rootSource,request:null,isRoot:!0});for(const e of this._formats){if(await e._canReadInput(this))return this._format=e,this._onFormatDetermined?.(e),e._createDemuxer(this)}throw new No})())}get source(){return this._rootSource}async getFormat(){return await this._getDemuxer(),E(this._format),this._format}async canRead(){try{return await this._getDemuxer(),!0}catch(e){if(e instanceof No)return!1;throw e}}async getFirstTimestamp(e){e??(e=await this.getTracks());const t=e.filter(e=>null!==e);if(0===t.length)return 0;const i=await Promise.all(t.map(e=>e._backing.getFirstPacket({metadataOnly:!0}))),r=Math.min(...i.map(e=>e?.timestamp??1/0));return r===1/0?0:r}async computeDuration(e,t){e??(e=await this.getTracks());const i=e.filter(e=>null!==e);if(0===i.length)return 0;const r=await Promise.all(i.map(e=>e.computeDuration(t)));return Math.max(...r)}async getDurationFromMetadata(e,t){e??(e=await this.getTracks());const i=e.filter(e=>null!==e),r=(await Promise.all(i.map(e=>e.getDurationFromMetadata(t)))).filter(e=>null!==e);return 0===r.length?null:Math.max(...r)}async getTracks(e){e&&(e=Bo(e));const t=(await this._getTrackBackings()).map(e=>this._wrapBackingAsTrack(e));return _o(t,e)}async getVideoTracks(e){e&&(e=Bo(e));const t=(await this.getTracks()).filter(e=>e.isVideoTrack());return _o(t,e)}async getAudioTracks(e){e&&(e=Bo(e));const t=(await this.getTracks()).filter(e=>e.isAudioTrack());return _o(t,e)}async getPrimaryVideoTrack(e){e&&(e=Bo(e));const t=Eo(e,{sortBy:async e=>[Co((await e.getDisposition()).default),Co(await e.hasPairableAudioTrack()),Co(!(await e.hasOnlyKeyPackets())),xo(await e.getBitrate())]});return(await this.getVideoTracks(t))[0]??null}async getPrimaryAudioTrack(e){e&&(e=Bo(e));const t=await this.getPrimaryVideoTrack(),i=Eo(e,{sortBy:async e=>[Co(!t||e.canBePairedWith(t)),Co((await e.getDisposition()).default),xo(await e.getBitrate())]});return(await this.getAudioTracks(i))[0]??null}async _getTrackBackings(){const e=await this._getDemuxer();return this._trackBackingsCache??(this._trackBackingsCache=await e.getTrackBackings())}_wrapBackingAsTrack(e){const t=this._backingToTrack.get(e);if(t)return t;const i="video"===e.getType()?new Po(this,e):new Io(this,e);return this._backingToTrack.set(e,i),i}async getMimeType(){return(await this._getDemuxer()).getMimeType()}async getMetadataTags(){return(await this._getDemuxer()).getMetadataTags()}dispose(){if(!this._disposed){this._disposed=!0;for(const e of this._sourceRefs)e.free();this._sourceRefs.length=0,this._demuxerPromise&&this._demuxerPromise.then(e=>e.dispose()).catch(()=>{})}}[Symbol.dispose](){this.dispose()}}class No extends Error{constructor(e="Input has an unsupported or unrecognizable format."){super(e),this.name="UnsupportedInputFormatError"}}class Oo extends Error{constructor(e="Input has been disposed."){super(e),this.name="InputDisposedError"}}class zo{constructor(e){this.source=e}get fileSize(){const e=this.source._getFileSize();if(void 0===e)throw new Error("Reading file size too early; read required first.");return e}get fileSizeNonStrict(){return this.source._getFileSize()??null}requestSlice(e,t){if(this.source._disposed)throw new Oo;if(e<0)return null;if(null!==this.fileSizeNonStrict&&e+t>this.fileSizeNonStrict)return null;if(0===t){const t=new Uint8Array(0);return new Lo(t,N(t),0,e,e)}const i=e+t,r=this.source._read(e,i,0,ws);return Re(r)?r.then(t=>t?new Lo(t.bytes,t.view,t.offset,e,i):null):r?new Lo(r.bytes,r.view,r.offset,e,i):null}requestSliceRange(e,t,i){if(this.source._disposed)throw new Oo;if(e<0)return null;if(null!==this.fileSizeNonStrict)return this.requestSlice(e,le(this.fileSizeNonStrict-e,t,i));{const r=this.requestSlice(e,i),a=r=>r||(E(null!==this.fileSizeNonStrict),this.requestSlice(e,le(this.fileSizeNonStrict-e,t,i)));return Re(r)?r.then(a):a(r)}}requestEntireFile(){if(null!==this.fileSizeNonStrict)return this.requestSlice(0,this.fileSizeNonStrict);return(async()=>{const e=[];let t=0;for(;;){if(1===e.length&&null!==this.fileSizeNonStrict)return this.requestSlice(0,this.fileSizeNonStrict);let i=this.requestSliceRange(t,0,1024);if(Re(i)&&(i=await i),!i||0===i.length)break;const r=qo(i,i.length);e.push(r),t+=i.length}const i=new Uint8Array(t);let r=0;for(const a of e)i.set(a,r),r+=a.length;return new Lo(i,N(i),0,0,t)})()}}class Lo{constructor(e,t,i,r,a){this.bytes=e,this.view=t,this.offset=i,this.start=r,this.end=a,this.bufferPos=r-i}static tempFromBytes(e){return new Lo(e,N(e),0,0,e.length)}get length(){return this.end-this.start}get filePos(){return this.offset+this.bufferPos}set filePos(e){this.bufferPos=e-this.offset}get remainingLength(){return Math.max(this.end-this.filePos,0)}skip(e){this.bufferPos+=e}slice(e,t=this.end-e){if(ethis.end)throw new RangeError("Slicing outside of original slice.");return new Lo(this.bytes,this.view,this.offset,e,e+t)}}const Uo=(e,t)=>{if(e.filePose.end)throw new RangeError(`Tried reading [${e.filePos}, ${e.filePos+t}), but slice is [${e.start}, ${e.end}). This is likely an internal error, please report it alongside the file that caused it.`)},qo=(e,t)=>{Uo(e,t);const i=e.bytes.subarray(e.bufferPos,e.bufferPos+t);return e.bufferPos+=t,i},Wo=e=>(Uo(e,1),e.view.getUint8(e.bufferPos++)),Ho=(e,t)=>{Uo(e,2);const i=e.view.getUint16(e.bufferPos,t);return e.bufferPos+=2,i},Vo=e=>{Uo(e,2);const t=e.view.getUint16(e.bufferPos,!1);return e.bufferPos+=2,t},jo=e=>{Uo(e,3);const t=ne(e.view,e.bufferPos,!1);return e.bufferPos+=3,t},Ko=e=>{Uo(e,2);const t=e.view.getInt16(e.bufferPos,!1);return e.bufferPos+=2,t},Xo=(e,t)=>{Uo(e,4);const i=e.view.getUint32(e.bufferPos,t);return e.bufferPos+=4,i},$o=e=>{Uo(e,4);const t=e.view.getUint32(e.bufferPos,!1);return e.bufferPos+=4,t},Go=e=>{Uo(e,4);const t=e.view.getUint32(e.bufferPos,!0);return e.bufferPos+=4,t},Qo=e=>{Uo(e,4);const t=e.view.getInt32(e.bufferPos,!1);return e.bufferPos+=4,t},Yo=(e,t)=>{let i,r;return t?(i=Xo(e,!0),r=Xo(e,!0)):(r=Xo(e,!1),i=Xo(e,!1)),4294967296*r+i},Jo=e=>4294967296*$o(e)+$o(e),Zo=e=>4294967296*Qo(e)+$o(e),ec=e=>{const t=Go(e),i=(e=>{Uo(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*i+t},tc=e=>{Uo(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},ic=e=>{Uo(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},rc=(e,t)=>{Uo(e,t);let i="";for(let r=0;rO.decode(qo(e,t)).split("\n").map(e=>e.trim()).filter(e=>e.length>0&&!i?.ignore?.(e));var sc,nc,oc,cc;(nc=sc||(sc={}))[nc.Unsynchronisation=128]="Unsynchronisation",nc[nc.ExtendedHeader=64]="ExtendedHeader",nc[nc.ExperimentalIndicator=32]="ExperimentalIndicator",nc[nc.Footer=16]="Footer",(cc=oc||(oc={}))[cc.ISO_8859_1=0]="ISO_8859_1",cc[cc.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",cc[cc.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",cc[cc.UTF_8=3]="UTF_8";const lc=128,uc=10,dc=["Blues","Classic rock","Country","Dance","Disco","Funk","Grunge","Hip-hop","Jazz","Metal","New age","Oldies","Other","Pop","Rhythm and blues","Rap","Reggae","Rock","Techno","Industrial","Alternative","Ska","Death metal","Pranks","Soundtrack","Euro-techno","Ambient","Trip-hop","Vocal","Jazz & funk","Fusion","Trance","Classical","Instrumental","Acid","House","Game","Sound clip","Gospel","Noise","Alternative rock","Bass","Soul","Punk","Space","Meditative","Instrumental pop","Instrumental rock","Ethnic","Gothic","Darkwave","Techno-industrial","Electronic","Pop-folk","Eurodance","Dream","Southern rock","Comedy","Cult","Gangsta","Top 40","Christian rap","Pop/funk","Jungle music","Native US","Cabaret","New wave","Psychedelic","Rave","Showtunes","Trailer","Lo-fi","Tribal","Acid punk","Acid jazz","Polka","Retro","Musical","Rock 'n' roll","Hard rock","Folk","Folk rock","National folk","Swing","Fast fusion","Bebop","Latin","Revival","Celtic","Bluegrass","Avantgarde","Gothic rock","Progressive rock","Psychedelic rock","Symphonic rock","Slow rock","Big band","Chorus","Easy listening","Acoustic","Humour","Speech","Chanson","Opera","Chamber music","Sonata","Symphony","Booty bass","Primus","Porn groove","Satire","Slow jam","Club","Tango","Samba","Folklore","Ballad","Power ballad","Rhythmic Soul","Freestyle","Duet","Punk rock","Drum solo","A cappella","Euro-house","Dance hall","Goa music","Drum & bass","Club-house","Hardcore techno","Terror","Indie","Britpop","Negerpunk","Polsk punk","Beat","Christian gangsta rap","Heavy metal","Black metal","Crossover","Contemporary Christian","Christian rock","Merengue","Salsa","Thrash metal","Anime","Jpop","Synthpop","Christmas","Art rock","Baroque","Bhangra","Big beat","Breakbeat","Chillout","Downtempo","Dub","EBM","Eclectic","Electro","Electroclash","Emo","Experimental","Garage","Global","IDM","Illbient","Industro-Goth","Jam Band","Krautrock","Leftfield","Lounge","Math rock","New romantic","Nu-breakz","Post-punk","Post-rock","Psytrance","Shoegaze","Space rock","Trop rock","World music","Neoclassical","Audiobook","Audio theatre","Neue Deutsche Welle","Podcast","Indie rock","G-Funk","Dubstep","Garage rock","Psybient"],hc=(e,t)=>{var i;const r=e.filePos;t.raw??(t.raw={}),(i=t.raw).TAG??(i.TAG=qo(e,lc-3)),e.filePos=r;const a=fc(e,30);a&&(t.title??(t.title=a));const s=fc(e,30);s&&(t.artist??(t.artist=s));const n=fc(e,30);n&&(t.album??(t.album=n));const o=fc(e,4),c=Number.parseInt(o,10);Number.isInteger(c)&&c>0&&(t.date??(t.date=new Date(String(c))));const l=qo(e,30);let u;if(0===l[28]&&0!==l[29]){const i=l[29];i>0&&(t.trackNumber??(t.trackNumber=i)),e.skip(-30),u=fc(e,28),e.skip(2)}else e.skip(-30),u=fc(e,30);u&&(t.comment??(t.comment=u));const d=Wo(e);d{const i=qo(e,t),r=Fe(i.indexOf(0),i.length),a=i.subarray(0,r);let s="";for(let n=0;n{const t=e.filePos,i=rc(e,3),r=Wo(e),a=Wo(e),s=Wo(e),n=$o(e);if("ID3"!==i||255===r||255===a||0!==(2155905152&n))return e.filePos=t,null;let o=Ni(n);return s&sc.Footer&&(o+=uc),{majorVersion:r,revision:a,flags:s,size:o}},pc=(e,t,i)=>{var r,a,s,n,o;if(![2,3,4].includes(t.majorVersion))return void Ke._warn(`Unsupported ID3v2 major version: ${t.majorVersion}`);const c=t.flags&sc.Footer?t.size-uc:t.size,l=qo(e,c),u=new gc(t,l);if(t.flags&sc.Unsynchronisation&&3===t.majorVersion&&u.ununsynchronizeAll(),t.flags&sc.ExtendedHeader){const e=u.readU32();3===t.majorVersion?u.pos+=e:u.pos+=e-4}for(;u.pos<=u.bytes.length-u.frameHeaderSize();){const e=u.readId3V2Frame();if(!e)break;const c=u.pos,l=u.pos+e.size;let d=!1,h=!1,f=!1;if(3===t.majorVersion?(d=!!(64&e.flags),h=!!(128&e.flags)):4===t.majorVersion&&(d=!!(4&e.flags),h=!!(8&e.flags),f=!!(2&e.flags)||!!(t.flags&sc.Unsynchronisation)),d)Ke._warn(`Skipping encrypted ID3v2 frame ${e.id}`),u.pos=l;else if(h)Ke._warn(`Skipping compressed ID3v2 frame ${e.id}`),u.pos=l;else{if(f&&u.ununsynchronizeRegion(u.pos,l),i.raw??(i.raw={}),"TXXX"===e.id){const e=(r=i.raw).TXXX??(r.TXXX={}),t=u.readId3V2TextEncoding(),a=u.readId3V2Text(t,l),s=u.readId3V2Text(t,l);e[a]??(e[a]=s)}else"T"===e.id[0]?(a=i.raw)[s=e.id]??(a[s]=u.readId3V2EncodingAndText(l)):(n=i.raw)[o=e.id]??(n[o]=u.readBytes(e.size));switch(u.pos=c,e.id){case"TIT2":case"TT2":i.title??(i.title=u.readId3V2EncodingAndText(l));break;case"TIT3":case"TT3":i.description??(i.description=u.readId3V2EncodingAndText(l));break;case"TPE1":case"TP1":i.artist??(i.artist=u.readId3V2EncodingAndText(l));break;case"TALB":case"TAL":i.album??(i.album=u.readId3V2EncodingAndText(l));break;case"TPE2":case"TP2":i.albumArtist??(i.albumArtist=u.readId3V2EncodingAndText(l));break;case"TRCK":case"TRK":{const e=u.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(i.trackNumber??(i.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&(i.tracksTotal??(i.tracksTotal=r))}break;case"TPOS":case"TPA":{const e=u.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(i.discNumber??(i.discNumber=t)),r&&Number.isInteger(r)&&r>0&&(i.discsTotal??(i.discsTotal=r))}break;case"TCON":case"TCO":{const e=u.readId3V2EncodingAndText(l);let t=/^\((\d+)\)/.exec(e);if(t){const e=Number.parseInt(t[1]);if(void 0!==dc[e]){i.genre??(i.genre=dc[e]);break}}if(t=/^\d+$/.exec(e),t){const e=Number.parseInt(t[0]);if(void 0!==dc[e]){i.genre??(i.genre=dc[e]);break}}i.genre??(i.genre=e)}break;case"TDRC":case"TDAT":{const e=u.readId3V2EncodingAndText(l),t=new Date(e);Number.isNaN(t.getTime())||(i.date??(i.date=t))}break;case"TYER":case"TYE":{const e=u.readId3V2EncodingAndText(l),t=Number.parseInt(e,10);Number.isInteger(t)&&(i.date??(i.date=new Date(String(t))))}break;case"USLT":case"ULT":{const e=u.readU8();u.pos+=3,u.readId3V2Text(e,l),i.lyrics??(i.lyrics=u.readId3V2Text(e,l))}break;case"COMM":case"COM":{const e=u.readU8();u.pos+=3,u.readId3V2Text(e,l),i.comment??(i.comment=u.readId3V2Text(e,l))}break;case"APIC":case"PIC":{const e=u.readId3V2TextEncoding();let r;if(2===t.majorVersion){const e=u.readAscii(3);r="PNG"===e?"image/png":"JPG"===e?"image/jpeg":"image/*"}else r=u.readId3V2Text(e,l);const a=u.readU8(),s=u.readId3V2Text(e,l).trimEnd(),n=l-u.pos;if(n>=0){const e=u.readBytes(n);i.images||(i.images=[]),i.images.push({data:e,mimeType:r,kind:3===a?"coverFront":4===a?"coverBack":"unknown",description:s})}}break;default:u.pos+=e.size}u.pos=l}}};class gc{constructor(e,t){this.header=e,this.bytes=t,this.pos=0,this.view=new DataView(t.buffer,t.byteOffset,t.byteLength)}frameHeaderSize(){return 2===this.header.majorVersion?6:10}ununsynchronizeAll(){const e=[];for(let t=0;t{const t=this.pos+e;if(t>this.bytes.length)return!1;if(t<=this.bytes.length-this.frameHeaderSize()){this.pos+=e;const t=this.readAscii(4);if("\0\0\0\0"!==t&&!/[0-9A-Z]{4}/.test(t))return!1}return!0};if(!s(i)){const e=4===this.header.majorVersion?t:Ni(t);s(e)&&(i=e)}return this.pos=a,{id:e,size:i,flags:r}}}readId3V2TextEncoding(){const e=this.readU8();if(e>3)throw new Error(`Unsupported text encoding: ${e}`);return e}readId3V2Text(e,t){const i=this.pos,r=this.readBytes(t-this.pos);switch(e){case oc.ISO_8859_1:{let e="";for(let t=0;t0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}if(254===r[0]&&255===r[1]){const e=new TextDecoder("utf-16be"),t=Fe(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}{const e=Fe(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),O.decode(r.subarray(0,e))}case oc.UTF_16_BE_NO_BOM:{const e=new TextDecoder("utf-16be"),t=Fe(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(0,t))}case oc.UTF_8:{const e=Fe(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),O.decode(r.subarray(0,e))}}}readId3V2EncodingAndText(e){if(this.pos>=e)return"";const t=this.readId3V2TextEncoding();return this.readId3V2Text(t,e)}}class kc{constructor(e){this.events=e,this.input=null,this.audioSink=null,this.audioIterator=null,this.audioContext=null,this.gainNode=null,this.audioContextStartTime=0,this.playbackTimeAtStart=0,this.latestScheduledEndTime=0,this.duration=Number.NaN,this.paused=!0,this.volume=.7,this.muted=!1,this.playbackRate=1,this.asyncId=0,this.queuedNodes=new Set}get currentTime(){return this.paused?this.playbackTimeAtStart:(this.audioContext.currentTime-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart}ensureAudioContext(e){if(this.audioContext)return;const t=window.AudioContext||window.webkitAudioContext;try{this.audioContext=new t({sampleRate:e})}catch{this.audioContext=new t}this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination),this.updateGain()}updateGain(){if(!this.gainNode)return;const e=this.muted?0:this.volume;this.gainNode.gain.value=e*e}stopQueuedNodes(){this.queuedNodes.forEach(e=>e.stop()),this.queuedNodes.clear()}async stopIterator(){await(this.audioIterator?.return()),this.audioIterator=null}handleNoAudioTrack(){this.audioSink=null,this.ensureAudioContext()}async load(e,t){++this.asyncId,await this.stopIterator(),this.stopQueuedNodes(),this.paused=!0,this.playbackTimeAtStart=0,this.audioContextStartTime=0;const{input:i,audioTrack:r,duration:a}=e;return this.input=i,this.duration=a,r?null!==r.codec&&await r.canDecode()?(this.ensureAudioContext(r.sampleRate),this.audioSink=new wo(r),void t?.()):(this.audioSink=null,this.ensureAudioContext(),void t?.()):(this.handleNoAudioTrack(),void t?.())}async runIterator(e){if(!this.audioSink)return;await this.stopIterator(),this.audioIterator=this.audioSink.buffers(this.currentTime);for(;;){if(e!==this.asyncId||this.paused)return;const i=[];let r=!1;try{for(let e=0;e<16;e++){const e=await this.audioIterator.next();if(e.done){r=!0;break}i.push(e.value)}}catch(t){console.error("Audio iterator error:",t),r=!0}if(e!==this.asyncId||this.paused)return;i.length>0&&"suspended"===this.audioContext.state&&(await this.audioContext.resume(),this.events.emit("canplay"),this.events.emit("playing"));for(const{buffer:e,timestamp:t}of i){const i=this.audioContext.createBufferSource();i.buffer=e,i.connect(this.gainNode),i.playbackRate.value=this.playbackRate;const r=this.audioContextStartTime+(t-this.playbackTimeAtStart)/this.playbackRate,a=(r+e.duration/this.playbackRate-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart;a>this.latestScheduledEndTime&&(this.latestScheduledEndTime=a),r>=this.audioContext.currentTime?i.start(r):i.start(this.audioContext.currentTime,(this.audioContext.currentTime-r)*this.playbackRate),this.queuedNodes.add(i),i.onended=()=>this.queuedNodes.delete(i)}if(r)break;await new Promise(e=>setTimeout(e,0));const a=1;for(;this.latestScheduledEndTime-this.currentTime>a;){if(e!==this.asyncId||this.paused)return;await new Promise(e=>setTimeout(e,50))}}}async play(){if(!this.paused)return;this.audioContext||this.ensureAudioContext(),"suspended"===this.audioContext.state&&await this.audioContext.resume(),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart,this.paused=!1;const e=++this.asyncId;this.runIterator(e)}pause(){this.paused||(this.playbackTimeAtStart=this.currentTime,this.paused=!0,this.stopIterator(),this.stopQueuedNodes())}async seek(e){this.playbackTimeAtStart=Math.max(0,e),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart;const t=++this.asyncId;this.paused||this.runIterator(t)}setVolume(e,t){this.volume=e,this.muted=t,this.updateGain()}setPlaybackRate(e){if(e!==this.playbackRate&&(this.paused||(this.playbackTimeAtStart=this.currentTime,this.audioContextStartTime=this.audioContext.currentTime),this.playbackRate=e,!this.paused)){const e=++this.asyncId;this.runIterator(e)}}destroy(){this.asyncId++,this.pause(),this.audioContext?.close(),this.audioContext=null,this.input=null,this.audioSink=null}}async function yc(e){return await e.getAverageBitrate()??await e.getBitrate()??0}const bc=/\.m3u8(?:$|[?#])/i;function wc(e){return"string"===typeof e&&bc.test(e)}function Tc(e){const t=function(e){return"string"===typeof e?new _s(e):e instanceof Blob?new Cs(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new As(e):e??null}(e);return t?new Mo({source:t,formats:wc(e)?Tn:wn}):null}class Sc{constructor(){this.active=!0,this.input=null,this.timers=new Set,this.controller="undefined"===typeof AbortController?void 0:new AbortController,this.cancellation=new Promise(e=>{this.resolveCancellation=e})}get signal(){return this.controller?.signal}own(e){this.active?this.input=e:e.dispose()}defer(e){if(!this.active)return;const t=setTimeout(()=>{this.timers.delete(t),this.active&&e()},0);this.timers.add(t)}async wait(e,t){try{await Promise.race([e,this.cancellation,t>0?this.timeout(t):new Promise(()=>{})])}finally{void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0)}}timeout(e){return new Promise((t,i)=>{this.deadline=setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){const e=this.input;this.input=null,e?.dispose()}cancel(){if(this.active){this.active=!1;for(const e of this.timers)clearTimeout(e);this.timers.clear(),void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0),this.resolveCancellation(),this.controller?.abort(),this.disposeInput()}}}function vc(e,t,i){for(const r of i){if(!t())return;e.emit(r)}}async function Pc({input:e,videoTrack:t,audioTrack:i}){const r=[t,i].filter(e=>null!==e),a=t||i,s=Boolean(a&&await a.isLive());let n=Number.NaN;return r.length>0&&(n=await e.getDurationFromMetadata(r,{skipLiveWait:!0}),null!==n||s||(n=await e.computeDuration(r,{skipLiveWait:!0}))),s?Number.POSITIVE_INFINITY:n??Number.NaN}function Ic(){let e,t;return{promise:new Promise((i,r)=>{e=i,t=r}),resolve:e,reject:t}}class xc{constructor(e){this.host=e,this.wanted=!1,this.playing=null,this.seeking=null,this.audioStart=null}operation(){return{...Ic(),source:this.host.loadSeq,complete:Ic()}}current(e,t){return!this.host.destroyed&&e.source===this.host.loadSeq&&this[t]===e}cancelPlay(){const e=this.playing;this.playing=null,e?.resolve()}invalidate(){this.cancelPlay(),this.wanted=!1;const e=this.seeking;this.seeking=null,e?.complete.resolve(),e?.resolve(),this.host.seeking=!1}ended(){this.wanted=!1,this.cancelPlay()}stop(){this.host.paused||(this.host.paused=!0,this.stopEngines(),this.host.events.emit("pause"))}stopEngines(){const e=[];for(const i of[()=>this.host.audio.pause(),()=>this.host.video.stop()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}pause(){this.wanted=!1,this.cancelPlay(),this.stop()}play(){if(this.host.destroyed)return Promise.resolve();if(this.wanted=!0,this.playing)return this.playing.promise;if(this.host.ended)return this.seek(0,!0);if(!this.host.paused&&!this.seeking)return Promise.resolve();const e=this.operation();return this.playing=e,this.runPlay(e).then(e.resolve,e.reject),e.promise}async startAudio(){this.audioStart||(this.audioStart=this.host.audio.play());const e=this.audioStart;try{await e}finally{this.audioStart===e&&(this.audioStart=null)}}async runPlay(e){const t=()=>this.current(e,"playing")&&this.wanted;try{for(;this.seeking;)if(await this.seeking.complete.promise,!t())return;if(!t())return;if(this.host.paused=!1,await this.startAudio(),!t())return void(this.wanted&&!this.host.destroyed||this.host.audio.pause());this.host.video.start(this.host.audio),vc(this.host.events,t,["play","playing"])}catch(i){if(!t())return;this.wanted=!1,this.host.paused=!0;try{this.stopEngines()}catch(r){console.warn("MediaBunny play cleanup error:",r)}throw i}finally{this.playing===e&&(this.playing=null)}}seek(e,t){return this.position(async t=>{const i=this.host.audio.seek(e),r=t()?this.host.video.seek(e):Promise.resolve();await Promise.all([i,r])},["seeked"],!1,t)}replace(e,t){return this.position(async i=>{e.duration=await Pc(e),i()&&(this.host.media=e,await Promise.all([this.host.video.load(e),this.host.audio.load(e)]),i()&&(await Promise.all([this.host.video.seek(t),this.host.audio.seek(t)]),i()&&(this.host.readyState=4,this.host.networkState=1)))},["loadedmetadata","durationchange","progress","loadeddata","canplay","canplaythrough","seeked"],!0)}position(e,t,i,r){if(this.host.destroyed)return Promise.resolve();this.wanted=r??(this.seeking?this.wanted:!this.host.paused),this.cancelPlay();const a=this.seeking,s=this.operation();return this.seeking=s,a?.complete.resolve(),a?.resolve(),this.runPosition(s,e,t,i).then(s.resolve,s.reject),s.promise}async runPosition(e,t,i,r){const a=()=>this.current(e,"seeking");let s=!1;try{if(r&&this.stop(),!a())return;if(this.host.ended=!1,this.host.seeking=!0,vc(this.host.events,a,["seeking","waiting"]),!a())return;if(r||this.stop(),!a())return;if(await t(a),!a())return;if(this.host.seeking=!1,e.complete.resolve(),vc(this.host.events,a,i),!a())return;this.seeking=null,s=this.wanted}catch(n){if(!a())return;throw this.host.seeking=!1,this.wanted=!1,this.cancelPlay(),this.host.reportError(n),n}finally{e.complete.resolve(),this.seeking===e&&(this.seeking=null)}s&&await this.play()}}const Cc=new WeakMap,Bc=new WeakMap;function Ec(e){const t=Bc.get(e);if(t)return t;const i=Promise.resolve().then(()=>e.next()).then(e=>e.value??null);Bc.set(e,i);const r=()=>{Bc.get(e)===i&&Bc.delete(e)};return i.then(r,r),i}function _c(e,t,i,r,a){const s=i?Math.max(.06,r/Math.max(1,a)):0;return i&&e{if(this.image===a&&t()){this.cancel();try{i(a)}catch(e){r(e)}}},a.onerror=()=>{this.image===a&&this.cancel()},a.src=e}}class Fc{constructor(e,t,i,r){this.host=e,this.ready=t,this.draw=i,this.failure=r,this.stopped=!1,this.closed=!1,this.scheduled=null,this.fetching=null}current(e){return!this.closed&&!this.stopped&&this.host.asyncId===e}async update(e){const t=this.host.videoIterator;if(!t||!this.ready()||!this.current(e)||this.host.isFetching)return;const i={};this.fetching=i,this.host.isFetching=!0;const r=()=>this.current(e)&&this.host.videoIterator===t;try{for(;r();){const e=await Ec(t);if(!r()||!e)return;const i=this.host.audioClock?.currentTime;if(void 0===i)return;const a=_c(e.timestamp,i,this.host.dropLateFrames,this.host.avSyncTolerance,this.host.playbackRate);if("skip"!==a){if("draw"!==a)return void(this.host.nextFrame=e);this.draw(e)}}}catch(a){if(r())throw a}finally{this.fetching===i&&(this.fetching=null,this.host.isFetching=!1)}}request(e){this.update(e).catch(t=>{this.current(e)&&(this.stop(),this.report(t))})}report(e){try{this.failure(e)}catch(t){console.warn("MediaBunny video error listener:",t)}}cancelFrame(){null!==this.scheduled&&(cancelAnimationFrame(this.scheduled),this.scheduled=null)}schedule(e){if(!this.current(e))return;this.cancelFrame();const t=requestAnimationFrame(()=>{if(this.scheduled===t&&this.current(e)){this.scheduled=null;try{this.render()}catch(i){this.stop(),this.report(i)}}});this.scheduled=t,this.host.rafId=t}render(){const e=this.host.asyncId,t=()=>this.current(e);if(!t()||!this.host.audioClock)return;const i=this.host.audioClock.currentTime,r=Date.now();if(r-this.host.lastTimeUpdate>=this.host.timeupdateInterval){if(this.host.events.emit("timeupdate"),!t())return;this.host.lastTimeUpdate=r}if(this.ready()){if(Number.isFinite(this.host.duration)&&i>=this.host.duration){this.stop(),this.host.stalled=!1;const e=this.host.asyncId;return void vc(this.host.events,()=>!this.closed&&this.host.asyncId===e,["ended","pause","canplay"])}if(this.host.nextFrame&&this.host.nextFrame.timestamp<=i){if(this.draw(this.host.nextFrame),this.host.nextFrame=null,this.request(e),this.host.stalled){if(vc(this.host.events,t,["canplay","playing"]),!t())return;this.host.stalled=!1}}else this.host.nextFrame||(this.request(e),Number.isFinite(this.host.duration)&&i!S(this,o),e=>I(this,d,g).call(this,e,!0),e=>I(this,d,m).call(this,e)))}async preflight(e,t,i){return async function(e,t,i,r,a=()=>!0){if(r?.aborted||!a())return!1;if(!t||"string"!==typeof e||wc(e))return!0;try{const t=await fetch(e,r?{method:"HEAD",signal:r}:{method:"HEAD"});if(r?.aborted||!a())return!1;const s=t.headers.get("accept-ranges");return!(!s||"none"===s)||(i.emit("error",new Event("RangeNotSupported")),!1)}catch(s){return!(r?.aborted||!a())&&(console.warn("Preflight check failed:",s),!0)}}(e,this.preflightRange,this.events,t,i)}drawPoster(){if(S(this,n)||!this.poster||this.posterDrawn)return;const e=S(this,t);S(this,c).draw(this.poster,()=>I(this,d,h).call(this,e),e=>{this.clear(),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,I(this,d,f).call(this).drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e=>I(this,d,m).call(this,e))}async stopIterator(){const e=this.videoIterator;this.videoIterator=null,this.nextFrame=null,await function(e){if(!e)return Promise.resolve();const t=Cc.get(e);if(t)return t;const i=Promise.resolve().then(()=>e.return()).then(()=>{});return Cc.set(e,i),i}(e)}clear(){I(this,d,f).call(this).clearRect(0,0,this.canvas.width,this.canvas.height)}cancelPending(){x(this,t)._++,x(this,i)._++,this.stop(),I(this,d,p).call(this),S(this,c).cancel(),P(this,o,!1),P(this,r,null),P(this,a,null),P(this,s,null),this.videoSink=null,this.input=null}async load(e,a){if(S(this,n))return;this.cancelPending();const s=S(this,t),c=S(this,i);P(this,o,!0);const l=Promise.resolve().then(()=>I(this,d,k).call(this,e,s,c,a));P(this,r,l);try{await l}finally{S(this,r)===l&&P(this,r,null)}}handleNoVideoTrack(){S(this,n)||(this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster())}async resetIterator(e){if(S(this,n))return;const a=S(this,t),s=++x(this,i)._,l=S(this,r);this.stop(),S(this,c).cancel(),P(this,o,!0);try{l&&await l,await I(this,d,y).call(this,e,a,s)}catch(u){if(I(this,d,h).call(this,a)&&S(this,i)===s)throw I(this,d,p).call(this),u}finally{I(this,d,h).call(this,a)&&S(this,i)===s&&P(this,o,!1)}}async updateNextFrame(e){await S(this,l).update(e)}render(){S(this,l).render()}start(e){S(this,l).start(e)}stop(){S(this,l).stop()}async seek(e){await this.resetIterator(e)}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){S(this,n)||(P(this,n,!0),x(this,t)._++,S(this,l).destroy(),S(this,c).cancel(),I(this,d,p).call(this),this.posterDrawn=!1,P(this,a,null),P(this,s,null),this.videoSink=null,this.input=null,this.audioClock=null)}}t=new WeakMap,i=new WeakMap,r=new WeakMap,a=new WeakMap,s=new WeakMap,n=new WeakMap,o=new WeakMap,c=new WeakMap,l=new WeakMap,u=new WeakMap,d=new WeakSet,h=function(e){return!S(this,n)&&S(this,t)===e},f=function(){if(!this.ctx)throw new Error("Canvas 2D context is unavailable.");return this.ctx},m=function(e){S(this,n)||(I(this,d,p).call(this),S(this,u)?S(this,u).call(this,e):this.events.emit("error",e))},p=function(){this.stopIterator().catch(e=>console.warn("MediaBunny iterator cleanup error:",e))},g=function(e,t){S(this,c).cancel(),t&&this.clear(),I(this,d,f).call(this).drawImage(e.canvas,0,0)},k=async function(e,t,r,s){if(I(this,d,h).call(this,t))try{this.clear(),this.posterDrawn=!1;const{input:i,videoTrack:n,duration:o}=e;if(this.input=i,this.duration=o,!n)return this.handleNoVideoTrack(),void s?.();const c=null!==n.codec&&await n.canDecode();if(!I(this,d,h).call(this,t))return;if(!c)return this.handleNoVideoTrack(),void s?.();const l=await n.canBeTransparent();if(!I(this,d,h).call(this,t))return;P(this,a,()=>new go(n,{poolSize:2,fit:"contain",alpha:l})),this.videoSink=S(this,a).call(this),this.width=n.displayWidth,this.height=n.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,s?.(),I(this,d,h).call(this,t)&&await I(this,d,y).call(this,0,t,r)}catch(n){if(I(this,d,h).call(this,t))throw I(this,d,p).call(this),n}finally{I(this,d,h).call(this,t)&&S(this,i)===r&&P(this,o,!1)}},y=async function(e,t,r){if(!I(this,d,h).call(this,t)||S(this,i)!==r)return;I(this,d,p).call(this),S(this,a)&&this.videoSink===S(this,s)&&(this.videoSink=S(this,a).call(this));const n=this.videoSink;if(!n||!I(this,d,h).call(this,t))return;P(this,s,n);const o=n.canvases(e);this.videoIterator=o;const c=()=>I(this,d,h).call(this,t)&&S(this,i)===r&&this.videoIterator===o,l=await Ec(o);if(!c())return;const u=await Ec(o);c()&&(this.nextFrame=u,l?I(this,d,g).call(this,l,!1):this.drawPoster())};class Dc{constructor({canvas:e,ctx:t,events:i,option:r={}}){v(this,b),this.events=i,this.option=r,this.audio=new kc(i),this.video=new Ac({canvas:e,ctx:t,events:i,timeupdateInterval:r.timeupdateInterval??250,avSyncTolerance:r.avSyncTolerance??.12,dropLateFrames:r.dropLateFrames??!1,poster:r.poster??"",preflightRange:r.preflightRange??!1,onError:e=>{try{this.pause()}catch(t){console.warn("MediaBunny video failure cleanup:",t)}this.reportError(e)}}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,this.input=null,this.media=null,this.loadSession=null,this.destroyed=!1,P(this,b,new xc(this)),i.addEventListener("ended",()=>{this.destroyed||(this.ended=!0,this.paused=!0,S(this,b).ended())})}async load(e){if(this.destroyed)return;const t=++this.loadSeq;if(S(this,b).invalidate(),this.video.cancelPending(),this.loadSession?.cancel(),t!==this.loadSeq||this.destroyed)return;if(this.pause(),t!==this.loadSeq||this.destroyed)return;this.disposeInput();const i=new Sc;this.loadSession=i,this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,i.defer(()=>this.events.emit("waiting")),i.defer(()=>this.events.emit("loadstart"));const r=Number.isFinite(this.option.loadTimeout)?this.option.loadTimeout??0:0;try{await i.wait(this.performLoad(e,t,i),r)}catch(a){if(t!==this.loadSeq)return;const e=++this.loadSeq;if(S(this,b).invalidate(),this.video.cancelPending(),i.cancel(),e!==this.loadSeq||this.destroyed)return;this.disposeInput(),this.reportError(a)}}async performLoad(e,t,i=this.loadSession){const r=()=>!this.destroyed&&t===this.loadSeq;if(!i||!(await this.video.preflight(e,i.signal,r))||!r())return;const a=Tc(e);if(!a)return this.video.handleNoVideoTrack(),void(r()&&this.audio.handleNoAudioTrack());i.own(a);const s=await async function(e,t){const i=await e.getPrimaryVideoTrack(),r=i?await i.getPrimaryPairableAudioTrack():await e.getPrimaryAudioTrack(),a=await Pc({input:e,videoTrack:i,audioTrack:r}),s=i||r,n=wc(t);return{input:e,videoTrack:i,audioTrack:r,duration:a,isLive:!Number.isFinite(a)&&Boolean(s&&await s.isLive()),isHls:n,videoMode:n?"auto":"manual",audioMode:n?"auto":"manual"}}(a,e);if(!r())return;if(!s.videoTrack&&!s.audioTrack)throw this.video.handleNoVideoTrack(),this.video.duration=Number.NaN,this.audio.duration=Number.NaN,new Error("Input has no audio or video tracks.");this.input=a,this.media=s;const n=function(e,t){let i=!1,r=!1,a=!1;function s(s){t()&&!a&&("video"===s?i=!0:r=!0,i&&r&&(a=!0,e()))}return{video:()=>s("video"),audio:()=>s("audio")}}(()=>{this.readyState=1,vc(this.events,r,["loadedmetadata","durationchange","progress"])},r);try{const e=this.video.load(s,n.video),t=r()?this.audio.load(s,n.audio):Promise.resolve();if(await Promise.all([e,t]),!r())return;this.readyState=4,this.networkState=1,vc(this.events,r,["loadeddata","canplay","canplaythrough","progress"])}catch(o){if(!r())return;throw console.error("MediaBunny load error:",o),o}}createTimeout(e){return new Promise((t,i)=>{setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){this.loadSession?.disposeInput(),this.input=null,this.media=null}async replaceTracks(e){if(this.media&&!this.destroyed)return S(this,b).replace({...this.media,...e},this.currentTime)}async selectHlsQuality(e){return async function(e,t){const{input:i,media:r,loadSeq:a}=e;if(!r?.isHls||!i||e.destroyed)return;const s=()=>!e.destroyed&&e.loadSeq===a&&e.input===i&&e.media===r;let n;try{const e=await i.getVideoTracks();if(!s())return;const a="auto"===t?await i.getPrimaryVideoTrack():e.find(e=>e.id===t)??r.videoTrack;if(!s()||!a)return;let o=r.audioTrack,c=r.audioMode;o&&a.canBePairedWith(o)||(o=await a.getPrimaryPairableAudioTrack(),c="auto"),n={videoTrack:a,audioTrack:o,videoMode:"auto"===t?"auto":"manual",audioMode:c}}catch(o){if(!s())return;throw o}s()&&await e.replaceTracks(n)}(this,e)}async selectHlsAudio(e){return async function(e,t){const{input:i,media:r,loadSeq:a}=e;if(!r?.isHls||!i||e.destroyed)return;const s=()=>!e.destroyed&&e.loadSeq===a&&e.input===i&&e.media===r;let n;try{const e=await i.getAudioTracks();if(!s())return;const a="auto"===t?r.videoTrack?await r.videoTrack.getPrimaryPairableAudioTrack():await i.getPrimaryAudioTrack():e.find(e=>e.id===t)??r.audioTrack;if(!s()||!a)return;let o=r.videoTrack,c=r.videoMode;o&&a.canBePairedWith(o)||(o=await a.getPrimaryPairableVideoTrack(),c="auto"),n={videoTrack:o,audioTrack:a,videoMode:c,audioMode:"auto"===t?"auto":"manual"}}catch(o){if(!s())return;throw o}s()&&await e.replaceTracks(n)}(this,e)}async getHlsState(){const e=this.media;if(this.destroyed)return null;try{const t=await async function(e){if(!e?.isHls||!e.input)return null;const[t,i]=await Promise.all([e.input.getVideoTracks(),e.videoTrack?e.videoTrack.getPairableAudioTracks():[]]),[r,a]=await Promise.all([Promise.all(t.map(async(e,t)=>({id:e.id,track:e,index:t,name:await e.getName(),height:await e.getDisplayHeight(),bitrate:await yc(e)}))),Promise.all(i.map(async(e,t)=>{const i=await e.getName(),r=await e.getLanguageCode();return{id:e.id,track:e,index:t,name:i,lang:r,language:r,bitrate:await yc(e)}}))]);return{levels:r,audios:a,currentLevel:e.videoTrack?r.find(t=>t.id===e.videoTrack?.id)??null:null,currentAudio:e.audioTrack?a.find(t=>t.id===e.audioTrack?.id)??null:null,videoMode:e.videoMode??"auto",audioMode:e.audioMode??"auto"}}(e);return this.destroyed||this.media!==e?null:t}catch(t){if(this.destroyed||this.media!==e)return null;throw t}}async play(){return S(this,b).play()}pause(){S(this,b).pause()}async seek(e){return S(this,b).seek(e)}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}reportError(e){if(this.destroyed)return;const t=e&&"object"===typeof e?Reflect.get(e,"message"):void 0;this.error={code:4,message:"string"===typeof t?t:String(e)},this.networkState=3,this.events.emit("error")}destroy(){if(this.destroyed)return;this.destroyed=!0,this.loadSeq++,S(this,b).invalidate();const e=[];for(const i of[()=>this.loadSession?.cancel(),()=>this.pause(),()=>this.disposeInput(),()=>this.audio.destroy(),()=>this.video.destroy()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}get currentTime(){return this.audio.currentTime}get duration(){return this.media?.duration??this.audio.duration??this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}b=new WeakMap;const Mc=new WeakMap;function Nc(e){let t=Mc.get(e);return t||(t={closed:!1,frames:new Set},Mc.set(e,t)),t}class Oc{constructor({art:e,canvas:t,ctx:i,option:r}){this.art=e,this.canvas=t,this.option=r,this.events=new B,this.engine=new Dc({canvas:t,ctx:i,events:this.events,option:r}),this._src=null,this._volume=r.volume??.7,this._muted=!!r.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),r.source?this.src=r.source:e.option?.url&&(this.src=e.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){Promise.resolve(this.engine.seek(Number(e)||0)).catch(()=>{})}get duration(){return this.engine.duration}get buffered(){return this.createTimeRanges(0,this.engine.duration)}get played(){return this.createTimeRanges(0,this.engine.currentTime)}get seekable(){return this.createTimeRanges(0,this.engine.duration)}createTimeRanges(e,t){return function(e,t,i){return!e||Number.isNaN(e)||i<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>t,end:()=>i}}(this.engine.duration,e,t)}get paused(){return this.engine.paused}get playing(){return!this.engine.paused&&!this.engine.ended}get ended(){return this.engine.ended}get seeking(){return this.engine.seeking}get readyState(){return this.engine.readyState}get networkState(){return this.engine.networkState}get error(){return this.engine.error}get playbackRate(){return this._playbackRate}set playbackRate(e){const t=Number(e);Number.isNaN(t)||t<=0||(this._playbackRate=t,this.engine.setPlaybackRate(t),this.events.emit("ratechange"))}get volume(){return this._volume}set volume(e){var t;this._volume=(t=e,Math.max(0,Math.min(1,Number(t)||0))),this._muted=!1,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}get muted(){return this._muted}set muted(e){this._muted=!!e,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}play(){return this.engine.play()}pause(){this.engine.pause()}load(){this._src&&this.engine.load(this._src)}getM3u8State(){return this.engine.getHlsState()}switchM3u8Quality(e){return this.engine.selectHlsQuality(e)}switchM3u8Audio(e){return this.engine.selectHlsAudio(e)}get videoWidth(){return this.engine.videoWidth}get videoHeight(){return this.engine.videoHeight}get poster(){return this.option.poster||""}set poster(e){this.option.poster=e}get autoplay(){return this.option.autoplay||!1}set autoplay(e){}get loop(){return this.option.loop||!1}set loop(e){}get controls(){return!1}set controls(e){}get playsInline(){return!0}set playsInline(e){}get crossOrigin(){return this.option.crossOrigin||""}set crossOrigin(e){}get preload(){return"auto"}set preload(e){}get defaultMuted(){return!1}set defaultMuted(e){}get defaultPlaybackRate(){return 1}set 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o=[...t.length?[{arrayCompleteness:1,nalUnitType:it.VPS_NUT,nalUnits:t}]:[],...i.length?[{arrayCompleteness:1,nalUnitType:it.SPS_NUT,nalUnits:i}]:[],...r.length?[{arrayCompleteness:1,nalUnitType:it.PPS_NUT,nalUnits:r}]:[],...n.length?[{arrayCompleteness:1,nalUnitType:Tt(n[0][0]),nalUnits:n}]:[]];return{configurationVersion:1,generalProfileSpace:s.generalProfileSpace,generalTierFlag:s.generalTierFlag,generalProfileIdc:s.generalProfileIdc,generalProfileCompatibilityFlags:s.generalProfileCompatibilityFlags,generalConstraintIndicatorFlags:s.generalConstraintIndicatorFlags,generalLevelIdc:s.generalLevelIdc,minSpatialSegmentationIdc:s.minSpatialSegmentationIdc,parallelismType:a,chromaFormatIdc:s.chromaFormatIdc,bitDepthLumaMinus8:s.bitDepthLumaMinus8,bitDepthChromaMinus8:s.bitDepthChromaMinus8,avgFrameRate:0,constantFrameRate:0,numTemporalLayers:s.spsMaxSubLayersMinus1+1,temporalIdNested:s.spsTemporalIdNestingFlag,lengthSizeMinusOne:3,arrays:o}}catch(t){return We._error("Error building HEVC 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mi)if(d<=m.maxPictureSize){h=m.level;break}const f=At[l];return{profile:a,level:h,bitDepth:o,chromaSubsampling:c,videoFullRangeFlag:u,colourPrimaries:null!=(t=null==f?void 0:f.colourPrimaries)?t:2,transferCharacteristics:null!=(i=null==f?void 0:f.transferCharacteristics)?i:2,matrixCoefficients:null!=(r=null==f?void 0:f.matrixCoefficients)?r:2}},Mt=function*(e){const t=new Ke(e),i=()=>{let e=0;for(let i=0;i<8;i++){const r=t.readAlignedByte();if(e+=(127&r)*u(2,7*i),!(128&r))break;if(7===i&&128&r)return null}return e>u(2,32)-1?null:e};for(;t.getBitsLeft()>=8;){t.skipBits(1);const r=t.readBits(4),n=t.readBits(1),s=t.readBits(1);let a;if(t.skipBits(1),n&&t.skipBits(8),s){const e=i();if(null===e)return;a=e}else a=Math.floor(t.getBitsLeft()/8);I(t.pos%8===0),yield{type:r,data:e.subarray(t.pos/8,t.pos/8+a)},t.skipBits(8*a)}},Nt=e=>{for(const{type:t,data:i}of Mt(e)){if(1!==t)continue;const e=new Ke(i),r=e.readBits(3);e.readBits(1);const n=e.readBits(1);let 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t.getUint16(8)<28?null:{fullRange:!1,colourPrimaries:t.getUint8(22),transferCharacteristics:t.getUint8(23),matrixCoefficients:t.getUint8(24)}},Lt=[480,960,1920,2880,480,960,1920,2880,480,960,1920,2880,480,960,480,960,120,240,480,960,120,240,480,960,120,240,480,960,120,240,480,960],zt=e=>{if(e.length<7)throw new Error("Setup header is too short.");if(5!==e[0])throw new Error("Wrong packet type in Setup header.");if("vorbis"!==String.fromCharCode(...e.slice(1,7)))throw new Error("Invalid packet signature in Setup header.");const t=e.length,i=new Uint8Array(t);for(let u=0;u97;)if(1===r.readBits(1)){n=r.pos;break}if(0===n)throw new Error("Invalid Setup header: framing bit not found.");let s=0,a=!1,o=0;for(;r.getBitsLeft()>=97;){const e=r.pos,t=r.readBits(8),i=r.readBits(16),n=r.readBits(16);if(t>63||0!==i||0!==n){r.pos=e;break}if(r.skipBits(1),s++,s>64)break;r.clone().readBits(6)+1===s&&(a=!0,o=s)}if(!a)throw new Error("Invalid Setup header: mode header not found.");if(o>63)throw new Error(`Unsupported mode count: ${o}.`);const l=o;r.pos=0,r.skipBits(n);const c=Array(l).fill(0);for(let u=l-1;u>=0;u--)r.skipBits(40),c[u]=r.readBits(1);return{modeBlockflags:c}},Ut=(e,t,i)=>{switch(e){case"avc":for(const e of at(i,t)){const t=i[e.offset],r=ot(t);if(r>=et.NON_IDR_SLICE&&r<=et.SLICE_DPC)return"delta";if(r===et.IDR)return"key";if(r===et.SEI&&!Pe()){const t=i.subarray(e.offset,e.offset+e.length),r=lt(t);let n=1;do{let e=0;for(;;){const t=r[n++];if(void 0===t)break;if(e+=t,t<255)break}let t=0;for(;;){const e=r[n++];if(void 0===e)break;if(t+=e,e<255)break}if(e===6){const e=new Ke(r);e.pos=8*n;const t=B(e),i=e.readBits(1);if(0===t&&1===i)return"key"}n+=t}while(n{var i,r;const n=F(e);let s=0;const a=n.getUint32(s,!0);s+=4;const o=A.decode(e.subarray(s,s+a));s+=a,a>0&&(null!=t.raw||(t.raw={}),null!=(i=t.raw).vendor||(i.vendor=o));const l=n.getUint32(s,!0);s+=4;for(let 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e=_e(c),i=F(e),r=i.getUint32(0,!1),n=i.getUint32(4,!1),s=String.fromCharCode(...e.subarray(8,8+n)),a=i.getUint32(8+n,!1),o=A.decode(e.subarray(12+n,12+n+a)),l=i.getUint32(n+a+28),u=e.subarray(n+a+32,n+a+32+l);null!=t.images||(t.images=[]),t.images.push({data:u,mimeType:s,kind:3===r?"coverFront":4===r?"coverBack":"unknown",name:void 0,description:o||void 0})}}}},Vt=[2,1,2,3,3,4,4,5],jt=e=>{if(e.length<7)return null;if(11!==e[0]||119!==e[1])return null;const t=new Ke(e);t.skipBits(16),t.skipBits(16);const i=t.readBits(2);if(3===i)return null;const r=t.readBits(6),n=t.readBits(5);if(n>8)return null;const 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i},Yt=[0,8e3,16e3,32e3,0,0,11025,22050,44100,0,0,12e3,24e3,48e3,96e3,192e3],Jt=[32e3,56e3,64e3,96e3,112e3,128e3,192e3,224e3,256e3,32e4,384e3,448e3,512e3,576e3,64e4,768e3,96e4,1024e3,1152e3,128e4,1344e3,1408e3,1411200,1472e3,1536e3,192e4,2048e3,3072e3,384e4,0,0,0],Zt=[16,16,20,20,0,24,24,0],ei=[1,2,2,2,2,3,3,4,4,5,6,6,6,7,8,8],ti=[1,2,2,2,2,3,18,19,6,7,518,323,83,519,582,535],ii=[32e3,44100,48e3,0],ri=[8e3,16e3,32e3,64e3,128e3,22050,44100,88200,176400,352800,12e3,24e3,48e3,96e3,192e3,384e3],ni=[512,1024,2048,4096],si=e=>{const t=oi(e),i=F(e);let r=t?4*Math.ceil(t.frameSize/4):0,n=null;for(;r+4<=e.length&&1683496997===i.getUint32(r);){const t=li(e.subarray(r));if(!t)break;null!=n||(n=t),r+=t.frameSize}if(t)return{frameSize:n?r:t.frameSize,sampleRate:t.sampleRate,numberOfChannels:t.numberOfChannels,sampleCount:t.sampleCount,channelLayout:t.channelLayout,pcmResolution:t.pcmResolution,bitRate:t.bitRate,core:t,hasExtensions:null!==n};if(!(null==n?void 0:n.asset))return null;const{asset:s}=n;return{frameSize:r,sampleRate:s.sampleRate,numberOfChannels:s.numberOfChannels,sampleCount:s.sampleCount,channelLayout:s.channelLayout,pcmResolution:s.pcmResolution,bitRate:0,core:null,hasExtensions:!0}},ai=e=>{const t=si(e);return(null==t?void 0:t.core)?t.hasExtensions?"dtsh":"dtsc":null},oi=e=>{if(e.length<18)return null;if(127!==e[0]||254!==e[1]||128!==e[2]||1!==e[3])return null;const t=new Ke(e);if(t.skipBits(32),t.skipBits(1),31!==t.readBits(5))return null;const i=t.readBits(1),r=t.readBits(7)+1;if(r%8!==0)return null;const n=t.readBits(14)+1;if(n<96)return null;const s=t.readBits(6);if(s>=ei.length)return null;const a=Yt[t.readBits(4)];if(0===a)return null;const o=Jt[t.readBits(5)];if(0!==t.readBits(1))return null;t.skipBits(4),t.skipBits(5);const l=t.readBits(2);if(3===l)return null;t.skipBits(1),i&&t.skipBits(16),t.skipBits(7);const c=Zt[t.readBits(3)];if(0===c)return null;const 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t=new Uint8Array([n.avcProfileIndication,n.profileCompatibility,n.avcLevelIndication]);return`avc${e.avcType}.${K(t)}`}if(!i||i.byteLength<4)throw new TypeError("AVC decoder description is not provided or is not at least 4 bytes long.");return`avc${e.avcType}.${K(i.subarray(1,4))}`}if("hevc"===t){let e,t,r,n,a,o;if(s)e=s.generalProfileSpace,t=s.generalProfileIdc,r=X(s.generalProfileCompatibilityFlags),n=s.generalTierFlag,a=s.generalLevelIdc,o=[...s.generalConstraintIndicatorFlags];else{if(!i||i.byteLength<23)throw new TypeError("HEVC decoder description is not provided or is not at least 23 bytes long.");const s=F(i),l=s.getUint8(1);e=l>>6&3,t=31&l,r=X(s.getUint32(2)),n=l>>5&1,a=s.getUint8(12),o=[];for(let e=0;e<6;e++)o.push(s.getUint8(6+e))}let l="hev1.";for(l+=["","A","B","C"][e]+t,l+=".",l+=r.toString(16).toUpperCase(),l+=".",l+=0===n?"L":"H",l+=a;o.length>0&&0===o[o.length-1];)o.pop();return o.length>0&&(l+=".",l+=o.map(e=>e.toString(16).toUpperCase()).join(".")),l}if("vp8"===t)return"vp8";if("vp9"===t){if(!a){const t=e.width*e.height;let i=C(mi).level;for(const e of mi)if(t<=e.maxPictureSize){i=e.level;break}return`vp09.00.${i.toString().padStart(2,"0")}.08`}let t=`vp09.${a.profile.toString().padStart(2,"0")}.${a.level.toString().padStart(2,"0")}.${a.bitDepth.toString().padStart(2,"0")}.${a.chromaSubsampling.toString().padStart(2,"0")}`;return t+=`.${a.colourPrimaries.toString().padStart(2,"0")}.${a.transferCharacteristics.toString().padStart(2,"0")}.${a.matrixCoefficients.toString().padStart(2,"0")}.${a.videoFullRangeFlag.toString().padStart(2,"0")}`,t.endsWith(pi)&&(t=t.slice(0,-15)),t}if("av1"===t){if(!o){const t=e.width*e.height;let i=C(mi).level;for(const e of mi)if(t<=e.maxPictureSize){i=e.level;break}return`av01.0.${i.toString().padStart(2,"0")}M.08`}const t=o.profile,i=o.level.toString().padStart(2,"0"),n=o.tier?"H":"M",s=o.bitDepth.toString().padStart(2,"0"),a=o.monochrome?"1":"0",l=100*o.chromaSubsamplingX+10*o.chromaSubsamplingY+1*(o.chromaSubsamplingX&&o.chromaSubsamplingY?o.chromaSamplePosition:0),c=(null==r?void 0:r.primaries)?M[r.primaries]:1,u=(null==r?void 0:r.transfer)?O[r.transfer]:1,d=(null==r?void 0:r.matrix)?z[r.matrix]:1,h=(null==r?void 0:r.fullRange)?1:0;let f=`av01.${t}.${i}${n}.${s}`;return f+=`.${a}.${l.toString().padStart(3,"0")}`,f+=`.${c.toString().padStart(2,"0")}`,f+=`.${u.toString().padStart(2,"0")}`,f+=`.${d.toString().padStart(2,"0")}`,f+=`.${h}`,f.endsWith(gi)&&(f=f.slice(0,-17)),f}if("prores"===t)return null!=l?l:"apch";throw null!==t&&te(t),new TypeError(`Unhandled codec '${t}'.`)},Ti=e=>{var t,i,r,n,s,a;switch(e.codec){case"avc":{let r=null==(t=e.avcCodecInfo)?void 0:t.sequenceParameterSets[0];if(!r&&e.codecDescription&&(r=null==(i=mt(e.codecDescription))?void 0:i.sequenceParameterSets[0]),r){const e=gt(r);if(e)return{primaries:N[e.colourPrimaries],transfer:L[e.transferCharacteristics],matrix:U[e.matrixCoefficients],fullRange:!!e.fullRangeFlag}}}break;case"hevc":{let t=null==(n=null==(r=e.hevcCodecInfo)?void 0:r.arrays.find(e=>e.nalUnitType===it.SPS_NUT))?void 0:n.nalUnits[0];if(!t&&e.codecDescription&&(t=null==(a=null==(s=(e=>{try{const t=F(e);let i=0;const r=t.getUint8(i++),n=t.getUint8(i++),s=n>>6&3,a=n>>5&1,o=31&n,l=t.getUint32(i,!1);i+=4;const c=e.subarray(i,i+6);i+=6;const u=t.getUint8(i++),d=(15&t.getUint8(i++))<<8|t.getUint8(i++),h=3&t.getUint8(i++),f=3&t.getUint8(i++),m=7&t.getUint8(i++),p=7&t.getUint8(i++),g=t.getUint16(i,!1);i+=2;const k=t.getUint8(i++),y=k>>6&3,b=k>>3&7,T=k>>2&1,v=3&k,S=t.getUint8(i++),w=[];for(let P=0;P>7&1,s=63&r,a=t.getUint16(i,!1);i+=2;const o=[];for(let l=0;le.nalUnitType===it.SPS_NUT))?void 0:a.nalUnits[0]),t){const e=vt(t);if(e)return{primaries:N[e.colourPrimaries],transfer:L[e.transferCharacteristics],matrix:U[e.matrixCoefficients],fullRange:!!e.fullRangeFlag}}}break;case"vp8":break;case"vp9":if(e.vp9CodecInfo)return{primaries:N[e.vp9CodecInfo.colourPrimaries],transfer:L[e.vp9CodecInfo.transferCharacteristics],matrix:U[e.vp9CodecInfo.matrixCoefficients],fullRange:!!e.vp9CodecInfo.videoFullRangeFlag};break;case"av1":if(e.av1CodecInfo)return{primaries:N[e.av1CodecInfo.colourPrimaries],transfer:L[e.av1CodecInfo.transferCharacteristics],matrix:U[e.av1CodecInfo.matrixCoefficients],fullRange:!!e.av1CodecInfo.videoFullRangeFlag};break;case"prores":if(e.proresCodecInfo)return{primaries:N[e.proresCodecInfo.colourPrimaries],transfer:L[e.proresCodecInfo.transferCharacteristics],matrix:U[e.proresCodecInfo.matrixCoefficients],fullRange:e.proresCodecInfo.fullRange}}return{primaries:void 0,transfer:void 0,matrix:void 0,fullRange:void 0}},vi=e=>{const{codec:t,codecDescription:i,aacCodecInfo:r,dtsFormat:n}=e;if("aac"===t){if(!r)throw new TypeError("AAC codec info must be provided.");if(r.isMpeg2)return"mp4a.67";{let e;if(null!==r.objectType)e=r.objectType;else{e=Ge(i).objectType}return`mp4a.40.${e}`}}if("mp3"===t)return"mp3";if("opus"===t)return"opus";if("vorbis"===t)return"vorbis";if("flac"===t)return"flac";if("ac3"===t)return"ac-3";if("eac3"===t)return"ec-3";if("dts"===t)return null!=n?n:"dtsc";if(t&&di.includes(t))return t;throw new TypeError(`Unhandled codec '${t}'.`)},Si=48e3,wi=/^pcm-([usf])(\d+)(be)?$/,Pi=e=>{if(I(di.includes(e)),"ulaw"===e)return{dataType:"ulaw",sampleSize:1,littleEndian:!0,silentValue:255};if("alaw"===e)return{dataType:"alaw",sampleSize:1,littleEndian:!0,silentValue:213};const t=wi.exec(e);let i;I(t),i="u"===t[1]?"unsigned":"s"===t[1]?"signed":"float";return{dataType:i,sampleSize:Number(t[2])/8,littleEndian:"be"!==t[3],silentValue:"pcm-u8"===e?u(2,7):0}},Ii=e=>e.startsWith("avc1")||e.startsWith("avc3")?"avc":e.startsWith("hev1")||e.startsWith("hvc1")?"hevc":"vp8"===e?"vp8":e.startsWith("vp09")?"vp9":e.startsWith("av01")?"av1":ki.includes(e)?"prores":"mp3"===e||"mp4a.69"===e||"mp4a.6B"===e||"mp4a.6b"===e||"mp4a.40.34"===e?"mp3":e.startsWith("mp4a.40.")||"mp4a.67"===e?"aac":"opus"===e?"opus":"vorbis"===e?"vorbis":"flac"===e?"flac":"ac-3"===e||"ac3"===e?"ac3":"ec-3"===e||"eac3"===e?"eac3":yi.includes(e)?"dts":"ulaw"===e?"ulaw":"alaw"===e?"alaw":wi.test(e)?e:"webvtt"===e?"webvtt":null,xi=[44100,48e3,32e3],Ci=[-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,32,40,48,56,64,80,96,112,128,160,192,224,256,320,-1,-1,32,48,56,64,80,96,112,128,160,192,224,256,320,384,-1,-1,32,64,96,128,160,192,224,256,288,320,352,384,416,448,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,32,48,56,64,80,96,112,128,144,160,176,192,224,256,-1],Bi=1483304551,Ei=1231971951,_i=(e,t)=>3===e?3===t?21:36:3===t?13:21,Ri=(e,t)=>{const i=e>>>24,r=e>>>16&255,n=e>>>8&255,s=255&e;if(255!==i&&255!==r&&255!==n&&255!==s)return{header:null,bytesAdvanced:4};if(255!==i)return{header:null,bytesAdvanced:1};if(224!==(224&r))return{header:null,bytesAdvanced:1};let a=0,o=0;16&r?a=8&r?0:1:(a=1,o=1);const l=r>>3&3,c=r>>1&3,u=(n>>2&3)%3,d=s>>6&3,h=s>>4&3,f=s>>3&1,m=s>>2&1,p=3&s,g=Ci[16*a*4+16*c+(n>>4&15)];if(-1===g)return{header:null,bytesAdvanced:1};const k=1e3*g,y=xi[u]>>a+o,b=((e,t,i,r,n)=>0===t?0:1===t?Math.floor(144*i/(r<>1&1);if(null!==t&&t{let t=2130706432,i=0;for(;0!==t;)i>>=1,i|=e&t,t>>=8;return i};var Ai,Di;(Di=Ai||(Ai={}))[Di.FrameCount=1]="FrameCount",Di[Di.FileSize=2]="FileSize",Di[Di.Toc=4]="Toc";const Mi=e=>3===e?1:2;class Ni{constructor(e){this.input=e}dispose(){}}const Oi=new Uint8Array(0);class Li{constructor(e,t,i,r,n=-1,s,a){if(this.data=e,this.type=t,this.timestamp=i,this.duration=r,this.sequenceNumber=n,e===Oi&&void 0===s)throw new Error("Internal error: byteLength must be explicitly provided when constructing metadata-only packets.");if(void 0===s&&(s=e.byteLength),!(e instanceof Uint8Array))throw new TypeError("data must be a Uint8Array.");if("key"!==t&&"delta"!==t)throw new TypeError('type must be either "key" or "delta".');if(!Number.isFinite(i))throw new TypeError("timestamp must be a number.");if(!Number.isFinite(r)||r<0)throw new TypeError("duration must be a non-negative number.");if(!Number.isFinite(n))throw new TypeError("sequenceNumber must be a number.");if(!Number.isInteger(s)||s<0)throw new TypeError("byteLength must be a non-negative integer.");if(void 0!==a&&("object"!==typeof a||!a))throw new TypeError("sideData, when provided, must be an object.");if(void 0!==(null==a?void 0:a.alpha)&&!(a.alpha instanceof Uint8Array))throw new TypeError("sideData.alpha, when provided, must be a Uint8Array.");if(void 0!==(null==a?void 0:a.alphaByteLength)&&(!Number.isInteger(a.alphaByteLength)||a.alphaByteLength<0))throw new TypeError("sideData.alphaByteLength, when provided, must be a non-negative integer.");this.byteLength=s,this.sideData=null!=a?a:{},this.sideData.alpha&&void 0===this.sideData.alphaByteLength&&(this.sideData.alphaByteLength=this.sideData.alpha.byteLength)}get isMetadataOnly(){return this.data===Oi}get microsecondTimestamp(){return Math.trunc(me*this.timestamp)}get microsecondDuration(){return Math.trunc(me*this.duration)}toEncodedVideoChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("EncodedVideoChunk is not available in this environment.");return new EncodedVideoChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}alphaToEncodedVideoChunk(e=this.type){if(!this.sideData.alpha)throw new TypeError("This packet does not contain alpha side data.");if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("EncodedVideoChunk is not available in this environment.");return new EncodedVideoChunk({data:this.sideData.alpha,type:e,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}toEncodedAudioChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to an audio chunk.");if("undefined"===typeof EncodedAudioChunk)throw new Error("EncodedAudioChunk is not available in this environment.");return new EncodedAudioChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}static fromEncodedChunk(e,t){var i;if(!(e instanceof EncodedVideoChunk||e instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedVideoChunk or EncodedAudioChunk.");const r=new Uint8Array(e.byteLength);return e.copyTo(r),new Li(r,e.type,e.timestamp/1e6,(null!=(i=e.duration)?i:0)/1e6,void 0,void 0,t)}clone(e){var t,i,r,n,s,a;if(void 0!==e&&("object"!==typeof e||null===e))throw new TypeError("options, when provided, must be an object.");if(void 0!==(null==e?void 0:e.data)&&!(e.data instanceof Uint8Array))throw new TypeError("options.data, when provided, must be a Uint8Array.");if(void 0!==(null==e?void 0:e.type)&&"key"!==e.type&&"delta"!==e.type)throw new TypeError('options.type, when provided, must be either "key" or "delta".');if(void 0!==(null==e?void 0:e.timestamp)&&!Number.isFinite(e.timestamp))throw new TypeError("options.timestamp, when provided, must be a number.");if(void 0!==(null==e?void 0:e.duration)&&!Number.isFinite(e.duration))throw new TypeError("options.duration, when provided, must be a number.");if(void 0!==(null==e?void 0:e.sequenceNumber)&&!Number.isFinite(e.sequenceNumber))throw new TypeError("options.sequenceNumber, when provided, must be a number.");if(void 0!==(null==e?void 0:e.sideData)&&("object"!==typeof e.sideData||null===e.sideData))throw new TypeError("options.sideData, when provided, must be an object.");return new Li(null!=(t=null==e?void 0:e.data)?t:this.data,null!=(i=null==e?void 0:e.type)?i:this.type,null!=(r=null==e?void 0:e.timestamp)?r:this.timestamp,null!=(n=null==e?void 0:e.duration)?n:this.duration,null!=(s=null==e?void 0:e.sequenceNumber)?s:this.sequenceNumber,this.byteLength,null!=(a=null==e?void 0:e.sideData)?a:this.sideData)}}const zi=e=>{const t=F(e);let i=0;const r=t.getUint8(i);i+=1,i+=3;const n=K(e.subarray(i,i+16));i+=16;let s=null;if(r>0){const r=t.getUint32(i);if(i+=4,r>0){s=[];for(let t=0;te.systemId===t.systemId&&((e,t)=>{if(e.length!==t.length)return!1;for(let i=0;i{let t=jo(e);const i=el(e,4);let r=8;1===t&&(t=Go(e),r=16);const n=t-r;return n<0?null:{name:i,totalSize:t,headerSize:r,contentSize:n}},Wi=e=>Xo(e)/65536,Hi=e=>Xo(e)/1073741824,Vi=e=>{let t=0;for(let i=0;i<4;i++){t<<=7;const i=zo(e);if(t|=127&i,0===(128&i))break}return t},ji=e=>{let t=qo(e);return e.skip(2),t=Math.min(t,e.remainingLength),A.decode(Lo(e,t))},Ki=e=>{const t=qi(e);if(!t||"data"!==t.name)return null;if(e.remainingLength<8)return null;const i=jo(e);e.skip(4);const r=Lo(e,t.contentSize-8);switch(i){case 1:return A.decode(r);case 2:return new TextDecoder("utf-16be").decode(r);case 13:return new He(r,"image/jpeg");case 14:return new He(r,"image/png");case 27:return new He(r,"image/bmp");default:return r}},Xi=16,$i=new Uint32Array(256),Gi=new Uint32Array(256),Qi=new Uint32Array(256),Yi=new Uint32Array(256),Ji=new Uint32Array(256),Zi=new Uint32Array(256),er=new Uint32Array(10);let tr=!1;class ir{constructor(){this.roundkey=new Uint32Array(44),this.iv=new Uint32Array(Xi/Uint32Array.BYTES_PER_ELEMENT),this.in=new Uint8Array(Xi),this.out=new Uint8Array(Xi),this.inView=new DataView(this.in.buffer),this.outView=new DataView(this.out.buffer)}init({key:e,iv:t}){I(16===e.byteLength),I(16===t.byteLength),tr||(()=>{const e=new Uint8Array(256),t=new Uint8Array(256),i=new Uint8Array(256);for(let s=0,a=1;s<256;s++)i[s]=a,t[a]=s,a=a^a<<1^(128&a?283:0);const r=(e,r)=>e&&r?i[(t[e]+t[r])%255]:0;e[0]=99;for(let s=1;s<256;s++){const r=i[255-t[s]];let n=r^r<<1^r<<2^r<<3^r<<4;n=n>>>8^255&n^99,e[s]=n}for(let s=0;s<256;s++){const t=e[s],i=e.indexOf(s);$i[s]=t<<24|t<<16|t<<8|t,Zi[s]=i<<24|i<<16|i<<8|i;const n=r(i,14)<<24|r(i,9)<<16|r(i,13)<<8|r(i,11);Gi[s]=n,Qi[s]=n>>>8|n<<24,Yi[s]=n>>>16|n<<16,Ji[s]=n>>>24|n<<8}let n=1;for(let s=0;s<10;s++)er[s]=n<<24,n=n<<1^(128&n?283:0);tr=!0})();const i=new DataView(e.buffer,e.byteOffset,e.byteLength),r=new DataView(t.buffer,t.byteOffset,t.byteLength);this.roundkey[0]=i.getUint32(0,!1),this.roundkey[1]=i.getUint32(4,!1),this.roundkey[2]=i.getUint32(8,!1),this.roundkey[3]=i.getUint32(12,!1),this.iv[0]=r.getUint32(0,!1),this.iv[1]=r.getUint32(4,!1),this.iv[2]=r.getUint32(8,!1),this.iv[3]=r.getUint32(12,!1);for(let n=4;n<44;n+=4){const e=this.roundkey[n-1];this.roundkey[n]=this.roundkey[n-4]^4278190080&$i[e>>>16&255]^16711680&$i[e>>>8&255]^65280&$i[e>>>0&255]^255&$i[e>>>24&255]^er[n/4-1],this.roundkey[n+1]=this.roundkey[n-3]^this.roundkey[n],this.roundkey[n+2]=this.roundkey[n-2]^this.roundkey[n+1],this.roundkey[n+3]=this.roundkey[n-1]^this.roundkey[n+2]}for(let n=0,s=40;n>>24&255]]^Qi[255&$i[t>>>16&255]]^Yi[255&$i[t>>>8&255]]^Ji[255&$i[t>>>0&255]]}}decrypt(){let e=this.inView.getUint32(0,!1)^this.roundkey[0],t=this.inView.getUint32(4,!1)^this.roundkey[1],i=this.inView.getUint32(8,!1)^this.roundkey[2],r=this.inView.getUint32(12,!1)^this.roundkey[3];const n=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),a=this.inView.getUint32(8,!1),o=this.inView.getUint32(12,!1);let l,c,u,d;for(let g=1;g<10;g++){const n=4*g;l=Gi[e>>>24]^Qi[r>>>16&255]^Yi[i>>>8&255]^Ji[255&t]^this.roundkey[n],c=Gi[t>>>24]^Qi[e>>>16&255]^Yi[r>>>8&255]^Ji[255&i]^this.roundkey[n+1],u=Gi[i>>>24]^Qi[t>>>16&255]^Yi[e>>>8&255]^Ji[255&r]^this.roundkey[n+2],d=Gi[r>>>24]^Qi[i>>>16&255]^Yi[t>>>8&255]^Ji[255&e]^this.roundkey[n+3],e=l,t=c,i=u,r=d}const h=4278190080&Zi[e>>>24&255]^16711680&Zi[r>>>16&255]^65280&Zi[i>>>8&255]^255&Zi[t>>>0&255]^this.roundkey[40],f=4278190080&Zi[t>>>24&255]^16711680&Zi[e>>>16&255]^65280&Zi[r>>>8&255]^255&Zi[i>>>0&255]^this.roundkey[41],m=4278190080&Zi[i>>>24&255]^16711680&Zi[t>>>16&255]^65280&Zi[e>>>8&255]^255&Zi[r>>>0&255]^this.roundkey[42],p=4278190080&Zi[r>>>24&255]^16711680&Zi[i>>>16&255]^65280&Zi[t>>>8&255]^255&Zi[e>>>0&255]^this.roundkey[43];this.outView.setUint32(0,h^this.iv[0],!1),this.outView.setUint32(4,f^this.iv[1],!1),this.outView.setUint32(8,m^this.iv[2],!1),this.outView.setUint32(12,p^this.iv[3],!1),this.iv[0]=n,this.iv[1]=s,this.iv[2]=a,this.iv[3]=o}}class rr extends Ni{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.psshBoxes=[],this.currentFragment=null,this.lastReadFragment=null,this.decryptionKeyCache=new Map,this.reader=e._reader}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.tracks.map(e=>e.trackBacking)})}getMimeType(){return y(this,null,function*(){yield this.readMetadata();const e=yield this.getTrackBackings(),t=yield Promise.all(e.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)}),hasAudio:this.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)}),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return y(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){let e=0,t=!1,i=!1;for(;;){let r=this.reader.requestSliceRange(e,8,16);if(Ce(r)&&(r=yield r),!r)break;const n=e,s=qi(r);if(!s)break;if("ftyp"===s.name||"styp"===s.name){const e=el(r,4);this.isQuickTime="qt "===e}else{if("moov"===s.name){let e=this.reader.requestSlice(r.filePos,s.contentSize);if(Ce(e)&&(e=yield e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice);for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}t=this.isFragmented&&null!==this.reader.fileSize&&this.reader.fileSize>n+s.totalSize,i=!0;break}if("moof"===s.name){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');yield this.copyMetadataFromInitInput(this.input._initInput),t=!1,i=!0;break}}e=n+s.totalSize}if(!i&&this.input._initInput&&(yield this.copyMetadataFromInitInput(this.input._initInput)),t){I(null!==this.reader.fileSize);let e=this.reader.requestSlice(this.reader.fileSize-4,4);Ce(e)&&(e=yield e),I(e);const t=jo(e),i=this.reader.fileSize-t;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(Ce(e)&&(e=yield e),e){const t=qi(e);if(t&&"mfra"===t.name){let i=this.reader.requestSlice(e.filePos,t.contentSize);Ce(i)&&(i=yield i),i&&this.readContiguousBoxes(i)}}}}}))()}copyMetadataFromInitInput(e){return y(this,null,function*(){const t=yield e._getDemuxer();if(t.constructor!==rr)throw new Error("Init input must match the input's format.");yield t.readMetadata(),this.movieTimescale=t.movieTimescale,this.movieDurationInTimescale=t.movieDurationInTimescale,this.metadataTags=t.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=t.fragmentTrackDefaults,this.psshBoxes=t.psshBoxes;for(const e of t.tracks){const t={id:e.id,demuxer:this,trackBacking:null,disposition:e.disposition,timescale:e.timescale,durationInMediaTimescale:e.durationInMediaTimescale,durationInMovieTimescale:e.durationInMovieTimescale,rotation:e.rotation,internalCodecId:e.internalCodecId,name:e.name,languageCode:e.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:e.editListPreviousSegmentDurations,editListOffset:e.editListOffset,encryptionInfo:e.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:e.info};if(e.trackBacking)if(I(t.info),"video"===t.info.type&&-1!==t.info.width){const e=t;t.trackBacking=new sr(e),this.tracks.push(t)}else if("audio"===t.info.type&&-1!==t.info.numberOfChannels){const e=t;t.trackBacking=new ar(e),this.tracks.push(t)}}})}getSampleTableForTrack(e){var t,i;if(e.sampleTable)return e.sampleTable;const r={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=r,null===e.sampleTableByteOffset)return r;I(this.moovSlice);const n=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(n),this.currentTrack=null;if("audio"===(null==(t=e.info)?void 0:t.type)&&e.info.codec&&di.includes(e.info.codec)&&0===r.sampleCompositionTimeOffsets.length){I("audio"===(null==(i=e.info)?void 0:i.type));const t=Pi(e.info.codec),n=[],s=[];for(let i=0;ie.startIndex),u=r.sampleTimingEntries[c],d=G(r.sampleTimingEntries,l,e=>e.startIndex),h=r.sampleTimingEntries[d],f=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,m=h.startDecodeTimestamp+(l-h.startIndex)*h.delta-f,p=C(n);p&&p.delta===m?p.count++:n.push({startIndex:a.startChunkIndex+i,startDecodeTimestamp:f,count:1,delta:m});const g=a.samplesPerChunk*t.sampleSize*e.info.numberOfChannels;s.push(g)}a.startSampleIndex=a.startChunkIndex,a.samplesPerChunk=1}r.sampleTimingEntries=n,r.sampleSizes=s}if(r.sampleCompositionTimeOffsets.length>0){r.presentationTimestamps=[];for(const e of r.sampleTimingEntries)for(let t=0;te.presentationTimestamp-t.presentationTimestamp),r.presentationTimestampIndexMap=Array(r.presentationTimestamps.length).fill(-1);for(let e=0;ee.moofOffset===s.moofOffset);if(r)dr(e,r.timestamp);else{const t=G(i,s.moofOffset-1,e=>e.moofOffset);if(-1!==t){const r=i[t];dr(e,r.endTimestamp)}}e.startTimestampIsFinal=!0}const r=G(i,e.startTimestamp,e=>e.startTimestamp);if(-1!==r&&i[r].moofOffset===s.moofOffset||i.splice(r+1,0,{moofOffset:s.moofOffset,startTimestamp:e.startTimestamp,endTimestamp:e.endTimestamp}),e.encryptionAuxInfo&&t.encryptionInfo){const i=yield pr(this.reader,t.encryptionInfo,e.encryptionAuxInfo);for(let t=0;t0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;fe(t.languageCode)||(t.languageCode=ae)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=el(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:h({},W),avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=ge,this.readContiguousBoxes(e.slice(ye,ke.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const i=zo(e);e.skip(3);const r=jo(e);for(let n=0;n0&&(1===a?(e.skip(4),l=8*jo(e),e.skip(8)):2===a&&(e.skip(4),c=Zo(e),o=jo(e),e.skip(4),l=jo(e),u=jo(e),e.skip(8))),t.info.numberOfChannels=o,t.info.sampleRate=c,t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+n.totalSize-e.filePos));const d="enca"===s?t.frmaCodecString:s;if(t.frmaCodecString=null,"mp4a"===d);else if("opus"===d)t.info.codec="opus",t.info.sampleRate=Si;else if("flac"===d)t.info.codec="flac";else if("ulaw"===d)t.info.codec="ulaw";else if("alaw"===d)t.info.codec="alaw";else if("ac-3"===d)t.info.codec="ac3";else if("ec-3"===d)t.info.codec="eac3";else if(yi.includes(d))t.info.codec="dts",t.info.dtsFormat=d;else if("twos"===d)8===l?t.info.codec="pcm-s8":16===l?t.info.codec=t.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(We._warn(`Unsupported sample size ${l} for codec 'twos'.`),t.info.codec=null);else if("sowt"===d)8===l?t.info.codec="pcm-s8":16===l?t.info.codec="pcm-s16":(We._warn(`Unsupported sample size ${l} for codec 'sowt'.`),t.info.codec=null);else if("raw "===d)t.info.codec="pcm-u8";else if("in24"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if("in32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if("fl32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if("fl64"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if("ipcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?16===e?t.info.codec="pcm-s16":24===e?t.info.codec="pcm-s24":32===e?t.info.codec="pcm-s32":(We._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null):16===e?t.info.codec="pcm-s16be":24===e?t.info.codec="pcm-s24be":32===e?t.info.codec="pcm-s32be":(We._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null)}else if("fpcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?32===e?t.info.codec="pcm-f32":64===e?t.info.codec="pcm-f64":(We._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null):32===e?t.info.codec="pcm-f32be":64===e?t.info.codec="pcm-f64be":(We._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=l+7>>3,i=Boolean(1&u),r=Boolean(2&u),n=4&u?-1:0;l>0&&l<=64&&(i?32===l&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):n&1<0?(t.encryptionInfo.defaultCryptByteBlock=r>>4,t.encryptionInfo.defaultSkipByteBlock=15&r):(t.encryptionInfo.defaultCryptByteBlock=0,t.encryptionInfo.defaultSkipByteBlock=0),t.encryptionInfo.defaultIsProtected=0!==zo(e),t.encryptionInfo.defaultPerSampleIvSize=zo(e),t.encryptionInfo.defaultKid=K(Lo(e,16)),t.encryptionInfo.defaultIsProtected&&0===t.encryptionInfo.defaultPerSampleIvSize){const i=zo(e),r=new Uint8Array(16);r.set(Lo(e,i),0),t.encryptionInfo.defaultConstantIv=r}}break;case"avcC":{const t=this.currentTrack;if(!t)break;if(I(t.info),0===ke.contentSize)break;t.info.codecDescription=Lo(e,ke.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;if(I(t.info),0===ke.contentSize)break;t.info.codecDescription=Lo(e,ke.contentSize)}break;case"vpcC":{const i=this.currentTrack;if(!i)break;I("video"===(null==(t=i.info)?void 0:t.type)),e.skip(4);const r=zo(e),n=zo(e),s=zo(e),a=s>>4,o=s>>1&7,l=1&s,c=zo(e),u=zo(e),d=zo(e);i.info.vp9CodecInfo={profile:r,level:n,bitDepth:a,chromaSubsampling:o,videoFullRangeFlag:l,colourPrimaries:c,transferCharacteristics:u,matrixCoefficients:d}}break;case"av1C":{const t=this.currentTrack;if(!t)break;I("video"===(null==(i=t.info)?void 0:i.type)),e.skip(1);const o=zo(e),l=o>>5,c=31&o,u=zo(e),d=u>>7,h=u>>6&1,f=u>>4&1,m=u>>3&1,p=u>>2&1,g=3&u,k=2===l&&h?u>>5&1?12:10:h?10:8;e.skip(1);const y=Lo(e,ke.contentSize-4),b=Nt(y);t.info.av1CodecInfo={profile:l,level:c,tier:d,bitDepth:k,monochrome:f,chromaSubsamplingX:m,chromaSubsamplingY:p,chromaSamplePosition:g,videoFullRangeFlag:null!=(r=null==b?void 0:b.videoFullRangeFlag)?r:0,colourPrimaries:null!=(n=null==b?void 0:b.colourPrimaries)?n:2,transferCharacteristics:null!=(s=null==b?void 0:b.transferCharacteristics)?s:2,matrixCoefficients:null!=(a=null==b?void 0:b.matrixCoefficients)?a:2}}break;case"colr":{const t=this.currentTrack;if(!t)break;I("video"===(null==(o=t.info)?void 0:o.type));const i=el(e,4);if("nclx"!==i&&"nclc"!==i)break;const r=qo(e),n=qo(e),s=qo(e);let a;"nclx"===i&&(a=Boolean(128&zo(e))),t.info.colorSpace={primaries:N[r],transfer:L[n],matrix:U[s],fullRange:a}}break;case"pasp":{const t=this.currentTrack;if(!t)break;I("video"===(null==(l=t.info)?void 0:l.type));const i=jo(e),r=jo(e);i>0&&r>0&&(i>r?t.info.squarePixelWidth=Math.round(t.info.width*i/r):t.info.squarePixelHeight=Math.round(t.info.height*r/i))}break;case"esds":{const t=this.currentTrack;if(!t||"audio"!==(null==(c=t.info)?void 0:c.type))break;e.skip(4);I(3===zo(e)),Vi(e),e.skip(2);const i=zo(e),r=0!==(64&i),n=0!==(32&i);if(0!==(128&i)&&e.skip(2),r){const t=zo(e);e.skip(t)}n&&e.skip(2);I(4===zo(e));const s=Vi(e),a=e.filePos,o=zo(e);if(64===o||103===o?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===o,objectType:null}):105===o||107===o?t.info.codec="mp3":221===o?t.info.codec="vorbis":169===o?t.info.codec="dts":We._warn(`Unsupported audio codec (objectTypeIndication ${o}) - discarding track.`),e.skip(12),s>e.filePos-a){I(5===zo(e));const i=Vi(e);if(t.info.codecDescription=Lo(e,i),"aac"===t.info.codec){const e=Ge(t.info.codecDescription);null!==e.outputNumberOfChannels&&(t.info.numberOfChannels=e.outputNumberOfChannels),null!==e.outputSampleRate&&(t.info.sampleRate=e.outputSampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(u=t.info)?void 0:u.type)),t.info.pcmLittleEndian=!!(255&qo(e))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(d=t.info)?void 0:d.type)),e.skip(4);const i=zo(e);t.info.pcmLittleEndian=Boolean(1&i),t.info.pcmSampleSize=zo(e)}break;case"dOps":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(m=t.info)?void 0:m.type)),e.skip(1);const i=zo(e),r=qo(e),n=jo(e),s=Ho(e),a=zo(e);let o;o=0!==a?Lo(e,2+i):new Uint8Array(0);const l=new Uint8Array(19+o.byteLength),c=new DataView(l.buffer);c.setUint32(0,1332770163,!1),c.setUint32(4,1214603620,!1),c.setUint8(8,1),c.setUint8(9,i),c.setUint16(10,r,!0),c.setUint32(12,n,!0),c.setInt16(16,s,!0),c.setUint8(18,a),l.set(o,19),t.info.codecDescription=l,t.info.numberOfChannels=i}break;case"dfLa":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(p=t.info)?void 0:p.type)),e.skip(4);const i=127,r=128,n=e.filePos;for(;e.filePos>>12,n=1+(i>>9&7);t.info.sampleRate=r,t.info.numberOfChannels=n,e.skip(20)}else e.skip(s);if(n&r)break}const s=e.filePos;e.filePos=n;const a=Lo(e,s-n),o=new Uint8Array(4+a.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(a,4),t.info.codecDescription=o}break;case"dac3":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(g=t.info)?void 0:g.type));const i=Lo(e,3),r=new Ke(i),n=r.readBits(2);r.skipBits(8);const s=r.readBits(3),a=r.readBits(1);n<3&&(t.info.sampleRate=Je[n]),t.info.numberOfChannels=Vt[s]+a}break;case"dec3":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(k=t.info)?void 0:k.type));const i=(e=>{if(e.length<2)return null;const t=new Ke(e),i=t.readBits(13),r=t.readBits(3),n=[];for(let s=0;s<=r&&!(Math.ceil(t.pos/8)+3>e.length);s++){const e=t.readBits(2),i=t.readBits(5);t.skipBits(1),t.skipBits(1);const r=t.readBits(3),s=t.readBits(3),a=t.readBits(1);t.skipBits(3);const o=t.readBits(4);let l=0;o>0?l=t.readBits(9):t.skipBits(1),n.push({fscod:e,fscod2:null,bsid:i,bsmod:r,acmod:s,lfeon:a,numDepSub:o,chanLoc:l})}return 0===n.length?null:{dataRate:i,substreams:n}})(Lo(e,ke.contentSize));if(!i){We._warn("Invalid dec3 box contents, ignoring.");break}const r=Gt(i);null!==r&&(t.info.sampleRate=r),t.info.numberOfChannels=Qt(i)}break;case"ddts":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(y=t.info)?void 0:y.type));const i=(e=>{if(e.length<20)return null;const t=F(e),i=t.getUint32(0);if(0===i)return null;const r=new Ke(e);r.seekToByte(13);const n=r.readBits(2);r.skipBits(5);const s=r.readBits(1),a=r.readBits(6);r.skipBits(14),r.skipBits(1),r.skipBits(3);const o=r.readBits(16);let l=null;return 0!==o?l=ci(o):ae.id===i);if(!r)break;const n=jo(e),s=(12&n)>>2,a=3&n,o=[zo,qo,Wo,jo],l=o[(48&n)>>4],c=o[s],u=o[a],d=jo(e);for(let h=0;he.timestamp-t.timestamp);for(let e=0;e({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let n=0;ne.id===c);if(!u)break;const d=this.fragmentTrackDefaults.find(e=>e.trackId===c);this.currentTrack=u,u.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:null!=(T=null==d?void 0:d.defaultSampleDescriptionIndex)?T:null,defaultSampleDuration:null!=(v=null==d?void 0:d.defaultSampleDuration)?v:null,defaultSampleSize:null!=(S=null==d?void 0:d.defaultSampleSize)?S:null,defaultSampleFlags:null!=(w=null==d?void 0:d.defaultSampleFlags)?w:null,startTimestamp:null,encryptionAuxInfo:null},i?u.currentFragmentState.baseDataOffset=Go(e):l&&(u.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),r&&(u.currentFragmentState.sampleDescriptionIndex=jo(e)),n&&(u.currentFragmentState.defaultSampleDuration=jo(e)),s&&(u.currentFragmentState.defaultSampleSize=jo(e)),a&&(u.currentFragmentState.defaultSampleFlags=jo(e)),o&&(u.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;I(t.currentFragmentState);const i=zo(e);e.skip(3);const r=0===i?jo(e):Go(e);t.currentFragmentState.startTimestamp=r}break;case"trun":{const t=this.currentTrack;if(!t)break;I(this.currentFragment),I(t.currentFragmentState);const i=zo(e),r=Wo(e),n=Boolean(1&r),s=Boolean(4&r),a=Boolean(256&r),o=Boolean(512&r),l=Boolean(1024&r),c=Boolean(2048&r),u=jo(e);let d=null;n&&(d=Xo(e));let h,f=null;s&&(f=jo(e)),this.currentFragment.trackData.has(t.id)?(h=this.currentFragment.trackData.get(t.id),null!==d&&(h.currentOffset=t.currentFragmentState.baseDataOffset+d)):(h={track:t,currentTimestamp:0,currentOffset:t.currentFragmentState.baseDataOffset+(null!=d?d:0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(t.id,h));for(let m=0;m0&&(n=Lo(e,r));const s=mr(t);s.defaultSampleInfoSize=i,s.sampleSizes=n,s.sampleCount=r}break;case"saio":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=zo(e);if(1&Wo(e)){const i=el(e,4),r=jo(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const r=jo(e);if(0===r)break;r>1&&We._warn("Multiple saio entries are not supported; using the first offset only.");let n=0===i?jo(e):Number(Go(e));this.currentFragment&&(n+=this.currentFragment.moofOffset);mr(t).offset=n}break;case"senc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;I(this.currentFragment);const i=this.currentFragment.trackData.get(t.id);if(!i)break;e.skip(1);const r=Wo(e),n=Boolean(2&r),s=jo(e),a=t.encryptionInfo.defaultPerSampleIvSize;I(null!==a);for(let o=0;o0?r.set(Lo(e,a),0):r.set(t.encryptionInfo.defaultConstantIv,0);let s=null;if(n){const t=qo(e);s=[];for(let i=0;i0&&(null!=(ce=this.metadataTags).trackNumber||(ce.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=(ue=this.metadataTags).tracksTotal||(ue.tracksTotal=i))}break;case"trkn":if(n instanceof Uint8Array&&n.length>=6){const e=F(n),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&(null!=(de=this.metadataTags).trackNumber||(de.trackNumber=t)),i>0&&(null!=(he=this.metadataTags).tracksTotal||(he.tracksTotal=i))}break;case"disc":case"disk":if(n instanceof Uint8Array&&n.length>=6){const e=F(n),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&(null!=(me=this.metadataTags).discNumber||(me.discNumber=t)),i>0&&(null!=(pe=this.metadataTags).discsTotal||(pe.discsTotal=i))}}}}}return e.filePos=be,!0}}class nr{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.tracks)if(r.trackBacking.getType()===t&&i++,r===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){var e;const t=this.internalTrack;if(t.durationInMediaTimescale<=0)return null;I(t.trackBacking);const i=yield t.trackBacking.getFirstPacket({metadataOnly:!0});return(null!=(e=null==i?void 0:i.timestamp)?e:0)+t.durationInMediaTimescale/t.timescale})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getFirstPacket(e){return y(this,null,function*(){const t=yield this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)})}mapTimestampIntoTimescale(e){return oe(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}getPacket(e,t){return y(this,null,function*(){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=or(r,i),s=yield this.fetchPacketForSampleIndex(n,t);return fr(r)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=G(t.presentationTimestamps,i,e=>e.presentationTimestamp);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=ee(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=i);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>r.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.samples.findIndex(e=>e.isKeyFrame);return I(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)})}fetchPacketForSampleIndex(e,t){return y(this,null,function*(){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=cr(i,e);if(!r)return null;let n;if(t.metadataOnly)n=Oi;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.sampleOffset,r.sampleSize);if(Ce(t)&&(t=yield t),!t)return null;if(n=Lo(t,r.sampleSize),this.internalTrack.encryptionInfo){let t=null;if(this.internalTrack.encryptionAuxInfo){const i=yield pr(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);ee.timestamp),f=-1!==h?this.internalTrack.fragmentLookupTable[h]:null,m=G(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),p=-1!==m?this.internalTrack.fragmentPositionCache[m]:null,g=Math.max(null!=(s=null==f?void 0:f.moofOffset)?s:0,null!=(a=null==p?void 0:p.moofOffset)?a:0)||null;let k;for(e?null===g||e.moofOffset>=g?(k=e.moofOffset+e.moofSize,c=e):k=g:k=null!=g?g:0;;){if(c){const e=c.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=l.reader.requestSliceRange(k,8,16);if(Ce(e)&&(e=yield e),!e)break;const i=k,s=qi(e);if(!s)break;if("moof"===s.name){c=yield l.readFragment(i);const{sampleIndex:e,correctSampleFound:r}=t(c);if(r)return this.fetchPacketInFragment(c,e,n);-1!==e&&(u=c,d=e)}k=i+s.totalSize}if(f&&(!u||u.moofOffsety(this,null,function*(){var e,t,i,r,n,s,a;if("avc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("hevc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo&&(2!==(a=this.internalTrack.info.vp9CodecInfo).colourPrimaries||2!==a.transferCharacteristics||2!==a.matrixCoefficients))if("av1"!==this.internalTrack.info.codec||this.internalTrack.info.av1CodecInfo&&(e=>2!==e.colourPrimaries||2!==e.transferCharacteristics||2!==e.matrixCoefficients)(this.internalTrack.info.av1CodecInfo)){if("prores"===this.internalTrack.info.codec&&!this.internalTrack.info.proresCodecInfo){const e=yield this.getFirstPacket({});this.internalTrack.info.proresCodecInfo=e&&Ot(e.data)}}else{const e=yield this.getFirstPacket({}),t=e&&Nt(e.data);t&&(this.internalTrack.info.av1CodecInfo=t)}else{const t=yield this.getFirstPacket({}),i=t&&Dt(t.data);i&&(this.internalTrack.info.vp9CodecInfo=f(h({},null!=(e=this.internalTrack.info.vp9CodecInfo)?e:i),{videoFullRangeFlag:i.videoFullRangeFlag,colourPrimaries:i.colourPrimaries,transferCharacteristics:i.transferCharacteristics,matrixCoefficients:i.matrixCoefficients}))}else{const e=yield this.getFirstPacket({});this.internalTrack.info.hevcCodecInfo=e&&St(e.data)}else{const e=yield this.getFirstPacket({});this.internalTrack.info.avcCodecInfo=e&&ht(e.data)}if(!q(this.internalTrack.info.colorSpace)){const e=Ti(this.internalTrack.info);null!=(t=this.internalTrack.info.colorSpace).primaries||(t.primaries=e.primaries),null!=(i=this.internalTrack.info.colorSpace).transfer||(i.transfer=e.transfer),null!=(r=this.internalTrack.info.colorSpace).matrix||(r.matrix=e.matrix),null!=(n=this.internalTrack.info.colorSpace).fullRange||(n.fullRange=e.fullRange)}const o={codec:bi(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(s=this.internalTrack.info.codecDescription)?s:void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(o.displayAspectWidth=this.internalTrack.info.squarePixelWidth,o.displayAspectHeight=this.internalTrack.info.squarePixelHeight),o}))():null})}}class ar extends nr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return y(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>y(this,null,function*(){var e;if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=yield this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&ai(e.data)}return{codec:vi(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}}))():null})}}const or=(e,t)=>{if(e.presentationTimestamps){const i=G(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===i?-1:e.presentationTimestamps[i].sampleIndex}{const i=G(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===i)return-1;const r=e.sampleTimingEntries[i];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},lr=(e,t)=>{var i;if(!e.keySampleIndices)return or(e,t);if(e.presentationTimestamps){const i=G(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===i)return-1;for(let t=i;t>=0;t--){const i=e.presentationTimestamps[t].sampleIndex;if(-1!==$(e.keySampleIndices,i,e=>e))return i}return-1}{const r=or(e,t),n=G(e.keySampleIndices,r,e=>e);return null!=(i=e.keySampleIndices[n])?i:-1}},cr=(e,t)=>{const i=G(e.sampleTimingEntries,t,e=>e.startIndex),r=e.sampleTimingEntries[i];if(!r||r.startIndex+r.count<=t)return null;let n=r.startDecodeTimestamp+(t-r.startIndex)*r.delta;const s=G(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),a=e.sampleCompositionTimeOffsets[s];a&&t-a.startIndexe.startSampleIndex),c=e.sampleToChunk[l];I(c);const u=c.startChunkIndex+Math.floor((t-c.startSampleIndex)/c.samplesPerChunk),d=e.chunkOffsets[u],h=c.startSampleIndex+(u-c.startChunkIndex)*c.samplesPerChunk;let f=0,m=d;if(1===e.sampleSizes.length)m+=o*(t-h),f+=o*c.samplesPerChunk;else for(let g=h;ge)}},ur=(e,t)=>{var i;if(!e.keySampleIndices)return t+1;const r=G(e.keySampleIndices,t,e=>e);return null!=(i=e.keySampleIndices[r+1])?i:-1},dr=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const i of e.samples)i.presentationTimestamp+=t;for(const i of e.presentationTimestamps)i.presentationTimestamp+=t},hr=e=>{const[t,i]=e,r=Math.atan2(i,t);return Number.isFinite(r)?r*(180/Math.PI):0},fr=e=>0===e.sampleSizes.length,mr=e=>{var t,i,r;return e.currentFragmentState?null!=(i=(t=e.currentFragmentState).encryptionAuxInfo)?i:t.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}:null!=(r=e.encryptionAuxInfo)?r:e.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}},pr=(e,t,i)=>y(null,null,function*(){if(i.resolved)return i.resolved;if(null===i.offset||0===i.sampleCount)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(i.defaultSampleInfoSize>0)r=i.defaultSampleInfoSize*i.sampleCount;else{I(i.sampleSizes);for(let e=0;e0?i.defaultSampleInfoSize:i.sampleSizes[e],o=new Uint8Array(16);s>0?o.set(Lo(n,s),0):o.set(t.defaultConstantIv,0);let l=null;if(r>s){const e=qo(n);l=[];for(let t=0;te.defaultConstantIv?{iv:e.defaultConstantIv,subsamples:null}:null,kr=(e,t,i,r)=>y(null,null,function*(){var n;I(e.encryptionInfo);const s=e.encryptionInfo;I(null!==s.defaultKid);const a=s.defaultKid;let o;const l=e.demuxer.decryptionKeyCache.get(a);if(l)o=yield l;else{if(!(null==(n=e.demuxer.input._formatOptions.isobmff)?void 0:n.resolveKeyId))throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");const t=y(null,null,function*(){let t=e.demuxer.psshBoxes;if(r){t=[...t,...r.psshBoxes].filter(e=>null===e.keyIds||e.keyIds.includes(a));for(let e=0;e{I(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;iy(null,null,function*(){const n=new Uint8Array(16);n.set(i.iv,0);const s=yield crypto.subtle.importKey("raw",e,{name:"AES-CTR"},!1,["decrypt"]),a=e=>y(null,null,function*(){const t=yield crypto.subtle.decrypt({name:"AES-CTR",counter:n,length:64},s,e);return new Uint8Array(t)});if(!i.subsamples)return a(r);I(null!==t.defaultCryptByteBlock&&null!==t.defaultSkipByteBlock);const o=Tr(i.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock);let l=0;for(const e of o)for(const t of e.perSubsample)l+=t.length;const c=new Uint8Array(l);let u=0;for(const e of o)for(const t of e.perSubsample)c.set(r.subarray(t.offset,t.offset+t.length),u),u+=t.length;const d=yield a(c),h=new Uint8Array(r);let f=0;for(const e of o)for(const t of e.perSubsample)h.set(d.subarray(f,f+t.length),t.offset),f+=t.length;return h}),br=(e,t,i,r)=>{const n=new ir;n.init({key:e,iv:i.iv});const s=t.defaultCryptByteBlock,a=t.defaultSkipByteBlock;if(I(null!==s&&null!==a),!i.subsamples){const e=new Uint8Array(r),t=Math.floor(r.length/16);for(let i=0;i{const r=[],n=0!==t||0!==i;let s=0;for(const a of e){s+=a.clearLen;const e=[];if(n){let r=a.protectedLen,n=s;for(;r>0&&!(r<16*t);){const s=16*t;e.push({offset:n,length:s}),n+=s,r-=s;const a=Math.min(16*i,r);n+=a,r-=a}s+=a.protectedLen}else a.protectedLen>0&&e.push({offset:s,length:a.protectedLen}),s+=a.protectedLen;r.push({perSubsample:e})}return r};var vr,Sr;(Sr=vr||(vr={}))[Sr.EBML=440786851]="EBML",Sr[Sr.EBMLVersion=17030]="EBMLVersion",Sr[Sr.EBMLReadVersion=17143]="EBMLReadVersion",Sr[Sr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",Sr[Sr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",Sr[Sr.DocType=17026]="DocType",Sr[Sr.DocTypeVersion=17031]="DocTypeVersion",Sr[Sr.DocTypeReadVersion=17029]="DocTypeReadVersion",Sr[Sr.Void=236]="Void",Sr[Sr.Segment=408125543]="Segment",Sr[Sr.SeekHead=290298740]="SeekHead",Sr[Sr.Seek=19899]="Seek",Sr[Sr.SeekID=21419]="SeekID",Sr[Sr.SeekPosition=21420]="SeekPosition",Sr[Sr.Duration=17545]="Duration",Sr[Sr.Info=357149030]="Info",Sr[Sr.TimestampScale=2807729]="TimestampScale",Sr[Sr.MuxingApp=19840]="MuxingApp",Sr[Sr.WritingApp=22337]="WritingApp",Sr[Sr.Tracks=374648427]="Tracks",Sr[Sr.TrackEntry=174]="TrackEntry",Sr[Sr.TrackNumber=215]="TrackNumber",Sr[Sr.TrackUID=29637]="TrackUID",Sr[Sr.TrackType=131]="TrackType",Sr[Sr.FlagEnabled=185]="FlagEnabled",Sr[Sr.FlagDefault=136]="FlagDefault",Sr[Sr.FlagForced=21930]="FlagForced",Sr[Sr.FlagOriginal=21934]="FlagOriginal",Sr[Sr.FlagHearingImpaired=21931]="FlagHearingImpaired",Sr[Sr.FlagVisualImpaired=21932]="FlagVisualImpaired",Sr[Sr.FlagCommentary=21935]="FlagCommentary",Sr[Sr.FlagLacing=156]="FlagLacing",Sr[Sr.Name=21358]="Name",Sr[Sr.Language=2274716]="Language",Sr[Sr.LanguageBCP47=2274717]="LanguageBCP47",Sr[Sr.CodecID=134]="CodecID",Sr[Sr.CodecPrivate=25506]="CodecPrivate",Sr[Sr.CodecDelay=22186]="CodecDelay",Sr[Sr.SeekPreRoll=22203]="SeekPreRoll",Sr[Sr.DefaultDuration=2352003]="DefaultDuration",Sr[Sr.Video=224]="Video",Sr[Sr.PixelWidth=176]="PixelWidth",Sr[Sr.PixelHeight=186]="PixelHeight",Sr[Sr.DisplayWidth=21680]="DisplayWidth",Sr[Sr.DisplayHeight=21690]="DisplayHeight",Sr[Sr.DisplayUnit=21682]="DisplayUnit",Sr[Sr.AlphaMode=21440]="AlphaMode",Sr[Sr.Audio=225]="Audio",Sr[Sr.SamplingFrequency=181]="SamplingFrequency",Sr[Sr.Channels=159]="Channels",Sr[Sr.BitDepth=25188]="BitDepth",Sr[Sr.SimpleBlock=163]="SimpleBlock",Sr[Sr.BlockGroup=160]="BlockGroup",Sr[Sr.Block=161]="Block",Sr[Sr.BlockAdditions=30113]="BlockAdditions",Sr[Sr.BlockMore=166]="BlockMore",Sr[Sr.BlockAdditional=165]="BlockAdditional",Sr[Sr.BlockAddID=238]="BlockAddID",Sr[Sr.BlockDuration=155]="BlockDuration",Sr[Sr.ReferenceBlock=251]="ReferenceBlock",Sr[Sr.Cluster=524531317]="Cluster",Sr[Sr.Timestamp=231]="Timestamp",Sr[Sr.Cues=475249515]="Cues",Sr[Sr.CuePoint=187]="CuePoint",Sr[Sr.CueTime=179]="CueTime",Sr[Sr.CueTrackPositions=183]="CueTrackPositions",Sr[Sr.CueTrack=247]="CueTrack",Sr[Sr.CueClusterPosition=241]="CueClusterPosition",Sr[Sr.Colour=21936]="Colour",Sr[Sr.MatrixCoefficients=21937]="MatrixCoefficients",Sr[Sr.TransferCharacteristics=21946]="TransferCharacteristics",Sr[Sr.Primaries=21947]="Primaries",Sr[Sr.Range=21945]="Range",Sr[Sr.Projection=30320]="Projection",Sr[Sr.ProjectionType=30321]="ProjectionType",Sr[Sr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",Sr[Sr.Attachments=423732329]="Attachments",Sr[Sr.AttachedFile=24999]="AttachedFile",Sr[Sr.FileDescription=18046]="FileDescription",Sr[Sr.FileName=18030]="FileName",Sr[Sr.FileMediaType=18016]="FileMediaType",Sr[Sr.FileData=18012]="FileData",Sr[Sr.FileUID=18094]="FileUID",Sr[Sr.Chapters=272869232]="Chapters",Sr[Sr.Tags=307544935]="Tags",Sr[Sr.Tag=29555]="Tag",Sr[Sr.Targets=25536]="Targets",Sr[Sr.TargetTypeValue=26826]="TargetTypeValue",Sr[Sr.TargetType=25546]="TargetType",Sr[Sr.TagTrackUID=25541]="TagTrackUID",Sr[Sr.TagEditionUID=25545]="TagEditionUID",Sr[Sr.TagChapterUID=25540]="TagChapterUID",Sr[Sr.TagAttachmentUID=25542]="TagAttachmentUID",Sr[Sr.SimpleTag=26568]="SimpleTag",Sr[Sr.TagName=17827]="TagName",Sr[Sr.TagLanguage=17530]="TagLanguage",Sr[Sr.TagString=17543]="TagString",Sr[Sr.TagBinary=17541]="TagBinary",Sr[Sr.ContentEncodings=28032]="ContentEncodings",Sr[Sr.ContentEncoding=25152]="ContentEncoding",Sr[Sr.ContentEncodingOrder=20529]="ContentEncodingOrder",Sr[Sr.ContentEncodingScope=20530]="ContentEncodingScope",Sr[Sr.ContentCompression=20532]="ContentCompression",Sr[Sr.ContentCompAlgo=16980]="ContentCompAlgo",Sr[Sr.ContentCompSettings=16981]="ContentCompSettings",Sr[Sr.ContentEncryption=20533]="ContentEncryption";const wr=[vr.EBML,vr.Segment],Pr=[vr.SeekHead,vr.Info,vr.Cluster,vr.Tracks,vr.Cues,vr.Attachments,vr.Chapters,vr.Tags],Ir=[...wr,...Pr],xr=16,Cr=e=>{if(e.remainingLength<1)return null;const t=zo(e);if(e.skip(-1),0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;return e.remainingLength{if(e.remainingLength<1)return null;const t=zo(e);if(0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;if(e.remainingLength{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r{const t=Cr(e);if(null===t)return null;if(e.remainingLength{if(e.remainingLength<1)return null;if(255===zo(e))return;e.skip(-1);const t=Br(e);return null===t?null:72057594037927940!==t?t:void 0},Fr=e=>{I(e.remainingLength>=2);const t=_r(e);if(null===t)return null;const i=Rr(e);return null===i?null:{id:t,size:i}},Ar=(e,t)=>{const i=Lo(e,t);let r=0;for(;r{const i=Lo(e,t);let r=0;for(;r{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?Jo(e):Zo(e)},Nr=(e,t,i,r)=>y(null,null,function*(){const n=new Set(i);let s=t;for(;null===r||ss?r:s,found:!1}}),Or=(e,t,i,r)=>y(null,null,function*(){const n=u(2,16),s=new Set(i);let a=t;for(;ae.tracks.map(e=>e.trackBacking))})}getMimeType(){return y(this,null,function*(){yield this.readMetadata();const e=yield this.getTrackBackings(),t=yield Promise.all(e.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)})),hasAudio:this.segments.some(e=>e.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)})),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return y(this,null,function*(){yield this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&(yield this.loadSegmentMetadata(t)),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e=h(h({},e),t.metadataTags);return e})}readMetadata(){var e;return null!=(e=this.readMetadataPromise)?e:this.readMetadataPromise=(()=>y(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,xr);if(Ce(t)&&(t=yield t),!t)break;const i=Fr(t);if(!i)break;const r=i.id;let n=i.size;const s=t.filePos;if(r===vr.EBML){Jr(n);let e=this.reader.requestSlice(s,n);if(Ce(e)&&(e=yield e),!e)break;this.readContiguousElements(e)}else if(r===vr.Segment){if(yield this.readSegment(s,n),void 0===n)break;if(null===this.reader.fileSize)break}else if(r===vr.Cluster){if(null===this.reader.fileSize)break;if(void 0===n){n=(yield Nr(this.reader,s,Ir,this.reader.fileSize)).pos-s}const e=C(this.segments);e&&(e.elementEndPos=s+n)}Jr(n),e=s+n}}))()}readSegment(e,t){return y(this,null,function*(){var i;this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let r=e;for(;null===this.currentSegment.elementEndPos||re.id===s);if(-1!==l){const e=an[l].flag;this.currentSegment[e]=!0,Jr(a);let t=this.reader.requestSlice(o,a);Ce(t)&&(t=yield t),t&&this.readContiguousElements(t)}else if(s===vr.Tags||s===vr.Attachments){s===vr.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,Jr(a);let e=this.reader.requestSlice(o,a);Ce(e)&&(e=yield e),e&&this.readContiguousElements(e)}else if(s===vr.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===a)break;r=o+a}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const t of this.currentSegment.seekEntries){const i=an.find(e=>e.id===t.id);if(!i)continue;if(this.currentSegment[i.flag])continue;let r=this.reader.requestSliceRange(e+t.segmentPosition,2,xr);if(Ce(r)&&(r=yield r),!r)continue;const n=Fr(r);if(!n)continue;const{id:s,size:a}=n;if(s!==i.id)continue;Jr(a),this.currentSegment[i.flag]=!0;let o=this.reader.requestSlice(r.filePos,a);Ce(o)&&(o=yield o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const e of this.currentSegment.tracks)null!==e.defaultDurationNs&&(e.defaultDuration=this.currentSegment.timestampFactor*e.defaultDurationNs/1e9);const n=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const e of this.currentSegment.cuePoints){const t=n.get(e.trackId);t&&t.cuePoints.push(e)}for(const e of this.currentSegment.tracks){e.cuePoints.sort((e,t)=>e.time-t.time);for(let t=0;ta&&(a=e.cuePoints.length,s=e);for(const e of this.currentSegment.tracks)0===e.cuePoints.length&&(e.cuePoints=s.cuePoints);this.currentSegment=null})}readCluster(e,t){return y(this,null,function*(){var i;if((null==(i=t.lastReadCluster)?void 0:i.elementStartPos)===e)return t.lastReadCluster;let r=this.reader.requestSliceRange(e,2,xr);Ce(r)&&(r=yield r),I(r);const n=e,s=Fr(r);I(s);I(s.id===vr.Cluster);let a=s.size;const o=r.filePos;if(void 0===a){a=(yield Nr(this.reader,o,Ir,t.elementEndPos)).pos-o}let l=this.reader.requestSlice(o,a);Ce(l)&&(l=yield l);const c={segment:t,elementStartPos:n,elementEndPos:o+a,dataStartPos:o,timestamp:-1,trackData:new Map};if(this.currentCluster=c,l){const e=this.readContiguousElements(l,Ir);c.elementEndPos=e}for(const[,e]of c.trackData){const t=e.track;I(e.blocks.length>0);let i=!1;for(let n=0;n({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let n=0;n({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const r=e.blocks[e.presentationTimestamps[0].blockIndex],s=e.blocks[C(e.presentationTimestamps).blockIndex];e.startTimestamp=r.timestamp,e.endTimestamp=s.timestamp+s.duration;const a=G(t.clusterPositionCache,e.startTimestamp,e=>e.startTimestamp);-1!==a&&t.clusterPositionCache[a].elementStartPos===n||t.clusterPositionCache.splice(a+1,0,{elementStartPos:c.elementStartPos,startTimestamp:e.startTimestamp})}return t.lastReadCluster=c,c})}getTrackDataInCluster(e,t){let i=e.trackData.get(t);if(!i){const r=e.segment.tracks.find(e=>e.id===t);if(!r)return null;i={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,i)}return i}expandLacedBlocks(e,t){var i;for(let r=0;r=2;){const i=e.filePos;if(!this.traverseElement(e,t))return i}return e.filePos}traverseElement(e,t){var i,r,n,s,a,o,l,c,u,d,m,p,g,k,y,b,T,v,S,w,P,C,B,E,_,R,F,D,M,O,z,q,H,V,j,K,X,$,G,Q,Y,J,Z,ee,te,ie,re,ne,se,oe,le;const ce=Fr(e);if(!ce)return!1;if(t&&t.includes(ce.id))return!1;const{id:ue,size:de}=ce,he=e.filePos;switch(Jr(de),ue){case vr.DocType:this.isWebM="webm"===Ar(e,de);break;case vr.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(he,de)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case vr.SeekID:{const t=null==(i=this.currentSegment)?void 0:i.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=Er(e,de)}break;case vr.SeekPosition:{const t=null==(r=this.currentSegment)?void 0:r.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=Er(e,de)}break;case vr.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=Er(e,de),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case vr.Duration:if(!this.currentSegment)break;this.currentSegment.duration=Mr(e,de);break;case vr.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:f(h({},je),{primary:!1}),trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(he,de)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>{var t;return"decompress"!==(null==(t=e.data)?void 0:t.type)||e.scope!==tn.Block||e.data.algorithm!==nn.HeaderStripping})&&(We._warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,null!==this.currentTrack.info.displayWidth&&null!==this.currentTrack.info.displayHeight){const e=this.currentTrack.info.displayWidth*this.currentTrack.info.height,t=this.currentTrack.info.displayHeight*this.currentTrack.info.width;e>0&&t>0&&(e>t?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*e/t):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*t/e))}if(this.currentTrack.codecId===Lr)this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(this.currentTrack.codecId===zr)this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(t===Ur)this.currentTrack.info.codec="vp8";else if(t===qr)this.currentTrack.info.codec="vp9";else if(t===Wr)this.currentTrack.info.codec="av1";else if(t===Hr){const e=this.currentTrack.codecPrivate?A.decode(this.currentTrack.codecPrivate):"";ki.includes(e)&&(this.currentTrack.info.codec="prores",this.currentTrack.info.proresFormat=e)}const e=this.currentTrack;this.currentTrack.trackBacking=new un(e),this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type){t===Vr?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===jr?this.currentTrack.info.codec="mp3":t===Kr?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=Si):t===Xr?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===$r?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Gr?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Qr?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Yr?(this.currentTrack.info.codec="dts","A_DTS/EXPRESS"===this.currentTrack.codecId?this.currentTrack.info.dtsFormat="dtse":"A_DTS/LOSSLESS"===this.currentTrack.codecId&&(this.currentTrack.info.dtsFormat="dtsl")):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack;this.currentTrack.trackBacking=new dn(e),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case vr.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=Er(e,de);break;case vr.TrackType:{if(!this.currentTrack)break;const t=Er(e,de);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:h({},W),alphaMode:!1,proresFormat:null}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null})}break;case vr.FlagEnabled:if(!this.currentTrack)break;Er(e,de)||(this.currentTrack=null);break;case vr.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!Er(e,de);break;case vr.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!Er(e,de);break;case vr.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!Er(e,de);break;case vr.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!Er(e,de);break;case vr.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!Er(e,de);break;case vr.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!Er(e,de);break;case vr.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=Ar(e,de);break;case vr.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=Lo(e,de);break;case vr.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=Er(e,de);break;case vr.Name:if(!this.currentTrack)break;this.currentTrack.name=Dr(e,de);break;case vr.Language:if(!this.currentTrack)break;if(this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=Ar(e,de),fe(this.currentTrack.languageCode)||(this.currentTrack.languageCode=ae);break;case vr.LanguageBCP47:{if(!this.currentTrack)break;const t=Ar(e,de).split("-")[0];this.currentTrack.languageCode=t||ae,this.currentTrack.hasLanguageBcp47=!0}break;case vr.Video:if("video"!==(null==(s=null==(n=this.currentTrack)?void 0:n.info)?void 0:s.type))break;this.readContiguousElements(e.slice(he,de));break;case vr.PixelWidth:if("video"!==(null==(o=null==(a=this.currentTrack)?void 0:a.info)?void 0:o.type))break;this.currentTrack.info.width=Er(e,de);break;case vr.PixelHeight:if("video"!==(null==(c=null==(l=this.currentTrack)?void 0:l.info)?void 0:c.type))break;this.currentTrack.info.height=Er(e,de);break;case vr.DisplayWidth:if("video"!==(null==(d=null==(u=this.currentTrack)?void 0:u.info)?void 0:d.type))break;this.currentTrack.info.displayWidth=Er(e,de);break;case vr.DisplayHeight:if("video"!==(null==(p=null==(m=this.currentTrack)?void 0:m.info)?void 0:p.type))break;this.currentTrack.info.displayHeight=Er(e,de);break;case vr.DisplayUnit:if("video"!==(null==(k=null==(g=this.currentTrack)?void 0:g.info)?void 0:k.type))break;this.currentTrack.info.displayUnit=Er(e,de);break;case vr.AlphaMode:if("video"!==(null==(b=null==(y=this.currentTrack)?void 0:y.info)?void 0:b.type))break;this.currentTrack.info.alphaMode=1===Er(e,de);break;case vr.Colour:if("video"!==(null==(v=null==(T=this.currentTrack)?void 0:T.info)?void 0:v.type))break;this.readContiguousElements(e.slice(he,de));break;case vr.MatrixCoefficients:{if("video"!==(null==(w=null==(S=this.currentTrack)?void 0:S.info)?void 0:w.type))break;const t=Er(e,de),i=U[t];this.currentTrack.info.colorSpace.matrix=i}break;case vr.Range:{if("video"!==(null==(C=null==(P=this.currentTrack)?void 0:P.info)?void 0:C.type))break;const t=Er(e,de);this.currentTrack.info.colorSpace.fullRange=1===t||2===t?2===t:void 0}break;case vr.TransferCharacteristics:{if("video"!==(null==(E=null==(B=this.currentTrack)?void 0:B.info)?void 0:E.type))break;const t=Er(e,de),i=L[t];this.currentTrack.info.colorSpace.transfer=i}break;case vr.Primaries:{if("video"!==(null==(R=null==(_=this.currentTrack)?void 0:_.info)?void 0:R.type))break;const t=Er(e,de),i=N[t];this.currentTrack.info.colorSpace.primaries=i}break;case vr.Projection:if("video"!==(null==(D=null==(F=this.currentTrack)?void 0:F.info)?void 0:D.type))break;this.readContiguousElements(e.slice(he,de));break;case vr.ProjectionPoseRoll:{if("video"!==(null==(O=null==(M=this.currentTrack)?void 0:M.info)?void 0:O.type))break;const t=-Mr(e,de);try{this.currentTrack.info.rotation=x(t)}catch(me){}}break;case vr.Audio:if("audio"!==(null==(q=null==(z=this.currentTrack)?void 0:z.info)?void 0:q.type))break;this.readContiguousElements(e.slice(he,de));break;case vr.SamplingFrequency:if("audio"!==(null==(V=null==(H=this.currentTrack)?void 0:H.info)?void 0:V.type))break;this.currentTrack.info.sampleRate=Mr(e,de);break;case vr.Channels:if("audio"!==(null==(K=null==(j=this.currentTrack)?void 0:j.info)?void 0:K.type))break;this.currentTrack.info.numberOfChannels=Er(e,de);break;case vr.BitDepth:if("audio"!==(null==($=null==(X=this.currentTrack)?void 0:X.info)?void 0:$.type))break;this.currentTrack.info.bitDepth=Er(e,de);break;case vr.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(he,de)),this.currentCueTime=null;break;case vr.CueTime:this.currentCueTime=Er(e,de);break;case vr.CueTrackPositions:{if(null===this.currentCueTime)break;I(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(he,de)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case vr.CueTrack:{const t=null==(G=this.currentSegment)?void 0:G.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=Er(e,de)}break;case vr.CueClusterPosition:{const t=null==(Q=this.currentSegment)?void 0:Q.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;I(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+Er(e,de)}break;case vr.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=Er(e,de);break;case vr.SimpleBlock:{if(!this.currentCluster)break;const t=Br(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=Ho(e),n=zo(e),s=n>>1&3;let a=!!(128&n);"audio"===(null==(Y=i.track.info)?void 0:Y.type)&&i.track.info.codec&&(a=!0);const o=Lo(e,de-(e.filePos-he)),l=i.track.decodingInstructions.length>0;i.blocks.push({timestamp:r,duration:0,isKeyFrame:a,data:o,lacing:s,decoded:!l,postProcessed:!1,mainAdditional:null})}break;case vr.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(he,de)),this.currentBlock=null;break;case vr.Block:{if(!this.currentCluster)break;const t=Br(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=Ho(e),n=zo(e)>>1&3,s=Lo(e,de-(e.filePos-he)),a=i.track.decodingInstructions.length>0;this.currentBlock={timestamp:r,duration:0,isKeyFrame:!0,data:s,lacing:n,decoded:!a,postProcessed:!1,mainAdditional:null},i.blocks.push(this.currentBlock)}break;case vr.BlockAdditions:this.readContiguousElements(e.slice(he,de));break;case vr.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(he,de)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case vr.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=Lo(e,de);break;case vr.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=Er(e,de);break;case vr.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=Er(e,de);break;case vr.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case vr.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(he,de));break;case vr.Targets:this.readContiguousElements(e.slice(he,de));break;case vr.TargetTypeValue:50!==Er(e,de)&&(this.currentTagTargetIsMovie=!1);break;case vr.TagTrackUID:case vr.TagEditionUID:case vr.TagChapterUID:case vr.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case vr.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(he,de));break;case vr.TagName:this.currentSimpleTagName=Dr(e,de);break;case vr.TagString:{if(!this.currentSimpleTagName)break;const t=Dr(e,de);this.processTagValue(this.currentSimpleTagName,t)}break;case vr.TagBinary:{if(!this.currentSimpleTagName)break;const t=Lo(e,de);this.processTagValue(this.currentSimpleTagName,t)}break;case vr.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(he,de));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(null!=t.raw||(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new Ve(this.currentAttachedFile.fileData,null!=(J=this.currentAttachedFile.fileMediaType)?J:void 0,null!=(Z=this.currentAttachedFile.fileName)?Z:void 0,null!=(ee=this.currentAttachedFile.fileDescription)?ee:void 0)),(null==(te=this.currentAttachedFile.fileMediaType)?void 0:te.startsWith("image/"))&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let i="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?i="coverFront":t.startsWith("back.")&&(i="coverBack")}null!=t.images||(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:i,name:null!=(ie=this.currentAttachedFile.fileName)?ie:void 0,description:null!=(re=this.currentAttachedFile.fileDescription)?re:void 0})}this.currentAttachedFile=null}break;case vr.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let i=BigInt("0");for(let r=0;rt.order-e.order);break;case vr.ContentEncoding:this.currentDecodingInstruction={order:0,scope:tn.Block,data:null},this.readContiguousElements(e.slice(he,de)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case vr.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=Er(e,de);break;case vr.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=Er(e,de);break;case vr.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:nn.Zlib,settings:null},this.readContiguousElements(e.slice(he,de));break;case vr.ContentCompAlgo:if("decompress"!==(null==(se=null==(ne=this.currentDecodingInstruction)?void 0:ne.data)?void 0:se.type))break;this.currentDecodingInstruction.data.algorithm=Er(e,de);break;case vr.ContentCompSettings:if("decompress"!==(null==(le=null==(oe=this.currentDecodingInstruction)?void 0:oe.data)?void 0:le.type))break;this.currentDecodingInstruction.data.settings=Lo(e,de);break;case vr.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=he+de,!0}decodeBlockData(e,t){I(e.decodingInstructions.length>0);let i=t;for(const r of e.decodingInstructions)if(I(r.data),"decompress"===r.data.type)if(r.data.algorithm===nn.HeaderStripping)if(r.data.settings&&r.data.settings.length>0){const e=r.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var i,r;if(!(null==(i=this.currentSegment)?void 0:i.metadataTags))return;const n=this.currentSegment.metadataTags;if(null!=n.raw||(n.raw={}),null!=(r=n.raw)[e]||(r[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":null!=n.title||(n.title=t);break;case"description":null!=n.description||(n.description=t);break;case"artist":null!=n.artist||(n.artist=t);break;case"album":null!=n.album||(n.album=t);break;case"album_artist":null!=n.albumArtist||(n.albumArtist=t);break;case"genre":null!=n.genre||(n.genre=t);break;case"comment":null!=n.comment||(n.comment=t);break;case"lyrics":null!=n.lyrics||(n.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||null!=n.date||(n.date=e)}break;case"track_number":case"part_number":{const e=t.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=n.trackNumber||(n.trackNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=n.tracksTotal||(n.tracksTotal=r))}break;case"disc_number":case"disc":{const e=t.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=n.discNumber||(n.discNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=n.discsTotal||(n.discsTotal=r))}}}getDurationFromMetadata(e){return y(this,null,function*(){if(e.duration<=0)return null;let t=null;for(const r of e.tracks){I(r.trackBacking);const e=yield r.trackBacking.getFirstPacket({metadataOnly:!0});e&&(t=Math.min(null!=t?t:1/0,e.timestamp))}let i=e.duration/e.timestampFactor;return i+=null!=t?t:0,i})}}class cn{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.segments)for(const e of r.tracks)if(e.trackBacking.getType()===t&&i++,e===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return this.internalTrack.demuxer.getDurationFromMetadata(this.internalTrack.segment)})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getFirstPacket(e){return y(this,null,function*(){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)})}intoTimescale(e){return oe(e*this.internalTrack.segment.timestampFactor)}getPacket(e,t){return y(this,null,function*(){const i=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=G(t.presentationTimestamps,i,e=>e.timestamp);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=ee(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=i);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.blocks.findIndex(e=>e.isKeyFrame);return I(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)})}fetchPacketInCluster(e,t,i){return y(this,null,function*(){var r,n;if(-1===t)return null;const s=e.trackData.get(this.internalTrack.id).blocks[t];if(I(s),s.decoded||(s.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,s.data),s.decoded=!0),!s.postProcessed){if("prores"===(null==(r=this.internalTrack.info)?void 0:r.codec)){if(!(s.data.length>=8&&105===s.data[4]&&99===s.data[5]&&112===s.data[6]&&102===s.data[7])){const e=new Uint8Array(s.data.length+8);F(e).setUint32(0,e.length,!1),e[4]=105,e[5]=99,e[6]=112,e[7]=102,e.set(s.data,8),s.data=e}}s.postProcessed=!0}const a=i.metadataOnly?Oi:s.data,o=s.timestamp/this.internalTrack.segment.timestampFactor,l=s.duration/this.internalTrack.segment.timestampFactor,c={};s.mainAdditional&&"video"===(null==(n=this.internalTrack.info)?void 0:n.type)&&this.internalTrack.info.alphaMode&&(c.alpha=i.metadataOnly?Oi:s.mainAdditional,c.alphaByteLength=s.mainAdditional.byteLength);const u=new Li(a,s.isKeyFrame?"key":"delta",o,l,e.dataStartPos+t,s.data.byteLength,c);return this.packetToClusterLocation.set(u,{cluster:e,blockIndex:t}),u})}performClusterLookup(e,t,i,r,n){return y(this,null,function*(){var s,a,o,l;const{demuxer:c,segment:u}=this.internalTrack;let d=null,h=null,f=-1;if(e){const{blockIndex:i,correctBlockFound:r}=t(e);if(r)return this.fetchPacketInCluster(e,i,n);-1!==i&&(h=e,f=i)}const m=G(this.internalTrack.cuePoints,i,e=>e.time),p=-1!==m?this.internalTrack.cuePoints[m]:null,g=G(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),k=-1!==g?this.internalTrack.clusterPositionCache[g]:null,y=Math.max(null!=(s=null==p?void 0:p.clusterPosition)?s:0,null!=(a=null==k?void 0:k.elementStartPos)?a:0)||null;let b;for(e?null===y||e.elementStartPos>=y?(b=e.elementEndPos,d=e):b=y:b=null!=y?y:u.clusterSeekStartPos;null===u.elementEndPos||b<=u.elementEndPos-2;){if(d){const e=d.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=c.reader.requestSliceRange(b,2,xr);if(Ce(e)&&(e=yield e),!e)break;const i=b,s=Fr(e);if(!s||!Pr.includes(s.id)&&s.id!==vr.Void){const e=yield Or(c.reader,i,Pr,Math.min(null!=(o=u.elementEndPos)?o:1/0,i+on));if(e){b=e;continue}break}const a=s.id;let l=s.size;const m=e.filePos;if(a===vr.Cluster){d=yield c.readCluster(i,u),l=d.elementEndPos-m;const{blockIndex:e,correctBlockFound:r}=t(d);if(r)return this.fetchPacketInCluster(d,e,n);-1!==e&&(h=d,f=e)}if(void 0===l){I(a!==vr.Cluster);l=(yield Nr(c.reader,m,Ir,u.elementEndPos)).pos-m}const p=m+l;if(null===u.elementEndPos){let e=c.reader.requestSliceRange(p,2,xr);if(Ce(e)&&(e=yield e),!e)break;if(_r(e)===vr.Segment){u.elementEndPos=p;break}}b=p}if(p&&(!h||h.elementStartPosy(this,null,function*(){var e,t,i,r,n;let s=null;("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"prores"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(s=yield this.getFirstPacket({}));const a={width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&s?ht(s.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&s?St(s.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&s?Dt(s.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&s?Nt(s.data):null,proresCodecInfo:"prores"===this.internalTrack.info.codec&&s?Ot(s.data):null,proresFormat:this.internalTrack.info.proresFormat};if(!q(this.internalTrack.info.colorSpace)){const n=Ti(a);null!=(e=this.internalTrack.info.colorSpace).primaries||(e.primaries=n.primaries),null!=(t=this.internalTrack.info.colorSpace).transfer||(t.transfer=n.transfer),null!=(i=this.internalTrack.info.colorSpace).matrix||(i.matrix=n.matrix),null!=(r=this.internalTrack.info.colorSpace).fullRange||(r.fullRange=n.fullRange)}const o={codec:bi(a),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(n=this.internalTrack.info.codecDescription)?n:void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(o.displayAspectWidth=this.internalTrack.info.squarePixelWidth,o.displayAspectHeight=this.internalTrack.info.squarePixelHeight),o}))():null})}}class dn extends cn{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return y(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>y(this,null,function*(){var e;if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=yield this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&ai(e.data)}return{codec:vi({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo,dtsFormat:this.internalTrack.info.dtsFormat}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}}))():null})}}const hn=(e,t,i,r=null)=>y(null,null,function*(){const n=u(2,16);let s=t;for(;null===i||s=4;){const t=a.filePos,i=jo(a),n=null!==e.fileSize?e.fileSize-s:null,o=Ri(i,n);if(o.header&&(!r||o.header.sampleRate===r.sampleRate&&o.header.mpegVersionId===r.mpegVersionId&&o.header.layer===r.layer&&Mi(o.header.channel)===Mi(r.channel)))return{header:o.header,startPos:s};a.filePos=t+o.bytesAdvanced,s=a.filePos}}return null});class fn extends Ni{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.firstFrameHeaderPos=null,this.xingFrameHeader=null,this.xingFrameHeaderPos=null,this.loadedSamples=[],this.metadataTags=null,this.xingData=null,this.trackBackings=[],this.readingMutex=new V,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return y(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();if(!this.firstFrameHeader&&this.xingFrameHeader&&(this.firstFrameHeader=this.xingFrameHeader,this.firstFrameHeaderPos=this.xingFrameHeaderPos),!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.trackBackings=[new mn(this)]}))()})}advanceReader(){return y(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,ol);if(Ce(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=dl(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=yield hn(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const i=_i(t.mpegVersionId,t.channel);let r=this.reader.requestSlice(e.startPos+i,4);if(Ce(r)&&(r=yield r),r){const n=jo(r);if(n===Bi||n===Ei){if(this.xingFrameHeader||(this.xingFrameHeader=t,this.xingFrameHeaderPos=e.startPos),!this.xingData){let t=this.reader.requestSlice(e.startPos+i+4,12);if(Ce(t)&&(t=yield t),t){const e=Lo(t,12),i=F(e),r=i.getUint32(0,!1);this.xingData={frameCount:r&Ai.FrameCount?i.getUint32(4,!1):null,fileSize:r&Ai.FileSize?i.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=t,this.firstFrameHeaderPos=e.startPos);const n=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,s={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:n,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(s),this.nextTimestampInSamples+=t.audioSamplesInFrame})}getMimeType(){return y(this,null,function*(){return"audio/mpeg"})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return y(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let i=this.reader.requestSlice(e,ol);if(Ce(i)&&(i=yield i),!i)break;const r=dl(i);if(!r)break;t=!0;let n=this.reader.requestSlice(i.filePos,r.size);if(Ce(n)&&(n=yield n),!n)break;hl(n,r,this.metadataTags),e=i.filePos+r.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=al){let e=this.reader.requestSlice(this.reader.fileSize-al,al);Ce(e)&&(e=yield e),I(e);"TAG"===el(e,3)&&cl(e,this.metadataTags)}return this.metadataTags}finally{e()}})}}class mn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return I(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){const e=this.demuxer;if(I(null!==e.firstFrameHeader),I(null!==e.firstFrameHeaderPos),e.xingData){if(null!==e.xingData.frameCount)return e.xingData.frameCount*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}else if(null!==e.reader.fileSize){const s=(t=e.firstFrameHeader.lowSamplingFrequency,i=e.firstFrameHeader.layer,r=e.firstFrameHeader.bitrate,n=e.firstFrameHeader.sampleRate,0===i?0:1===i?144*r/(n<e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}})}getPacket(e,t){return y(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=G(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1>>0&4294967295}const kn=e=>{const t=F(e),i=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let n=0;n>>24^t])>>>0}return t.setUint32(22,i,!0),r},yn=(e,t,i)=>{let r=0,n=null;if(e.length>0)if("vorbis"===t.codec){I(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,a=(e[0]&s)>>1;if(a>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=i;const l=t.vorbisInfo.modeBlockflags[a];if(n=t.vorbisInfo.blocksizes[l],1===l){const i=1+(1|s),r=e[0]&i?1:0;o=t.vorbisInfo.blocksizes[r]}r=null!==o?o+n>>2:0}else if("opus"===t.codec){r=(e=>{const t=e[0]>>3,i=3&e[0];let r;return r=0===i?1:1===i||2===i?2:63&e[1],{durationInSamples:Lt[t]*r}})(e).durationInSamples}return{durationInSamples:r,vorbisBlockSize:n}},bn=27,Tn=282,vn=e=>{const t=e.filePos;if(Ko(e)!==pn)return null;e.skip(1);const i=zo(e),r=Yo(e),n=Ko(e),s=Ko(e),a=Ko(e),o=zo(e),l=new Uint8Array(o);for(let d=0;de+t,0);return{headerStartPos:t,totalSize:c+u,dataStartPos:t+c,dataSize:u,headerType:i,granulePosition:r,serialNumber:n,sequenceNumber:s,checksum:a,lacingValues:l}},Sn=(e,t)=>{for(;e.filePos>>8&255)===i||(t>>>16&255)===i||(t>>>24&255)===i){if(e.skip(-4),t===pn)return!0;e.skip(1)}}return!1};class wn extends Ni{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.trackBackings=[],this.metadataTags={},this.reader=e._reader}readMetadata(){return y(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,bn,Tn);if(Ce(t)&&(t=yield t),!t)break;const i=vn(t);if(!i)break;if(!!!(2&i.headerType))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(const t of this.bitstreams){const e=yield this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?yield this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&(yield this.readOpusMetadata(e,t)),null!==t.codecInfo.codec&&this.trackBackings.push(new Pn(t,this)))}}))()})}readVorbisMetadata(e,t){return y(this,null,function*(){let i=yield this.findNextPacketStart(e);if(!i)return;const r=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;if(i=yield this.findNextPacketStart(r),!i)return;const n=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!n)return;if(3!==r.data[0]||5!==n.data[0])return;const s=[],a=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};a(e.data.length),a(r.data.length);const o=new Uint8Array(1+s.length+e.data.length+r.data.length+n.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(r.data,1+s.length+e.data.length),o.set(n.data,1+s.length+e.data.length+r.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=n;const l=F(e.data);t.numberOfChannels=l.getUint8(11),t.sampleRate=l.getUint32(12,!0);const c=l.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&c),1<<(c>>4)],modeBlockflags:zt(n.data).modeBlockflags},Ht(r.data.subarray(7),this.metadataTags)})}readOpusMetadata(e,t){return y(this,null,function*(){const i=yield this.findNextPacketStart(e);if(!i)return;const r=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=r;const n=(e=>{const t=F(e),i=t.getUint8(9),r=t.getUint16(10,!0),n=t.getUint32(12,!0),s=t.getInt16(16,!0),a=t.getUint8(18);let o=null;return a&&(o=e.subarray(19,21+i)),{outputChannelCount:i,preSkip:r,inputSampleRate:n,outputGain:s,channelMappingFamily:a,channelMappingTable:o}})(e.data);t.numberOfChannels=n.outputChannelCount,t.sampleRate=Si,t.codecInfo.opusInfo={preSkip:n.preSkip},Ht(r.data.subarray(8),this.metadataTags)})}readPacket(e,t){return y(this,null,function*(){I(te+t.length,0);if(0===o)return null;const l=new Uint8Array(o);let c=0;for(let e=0;e{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(yield Promise.all(this.trackBackings.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})))).filter(Boolean)})})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return y(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}class Pn{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new V,this.internalSampleRate="opus"===e.codecInfo.codec?Si:e.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){const e=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return I(-1!==e),e+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return null})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}getDecoderConfig(){return y(this,null,function*(){var e;return I(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:null!=(e=this.bitstream.description)?e:void 0}})}getName(){return null}getLanguageCode(){return ae}getDisposition(){return f(h({},je),{primary:!1})}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(I(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,i){if(!e)return null;const{durationInSamples:r,vorbisBlockSize:n}=yn(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new Li(i.metadataOnly?Oi:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,r/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:r,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:n}),s}getFirstPacket(e){return y(this,null,function*(){I(this.bitstream.lastMetadataPacket);const t=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(I(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const r=yield this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(r,{timestampInSamples:i,vorbisLastBlocksize:null},e)})}getNextPacket(e,t){return y(this,null,function*(){const i=this.encodedPacketToMetadata.get(e);if(!i)throw new Error("Packet was not created from this track.");const r=yield this.demuxer.findNextPacketStart(i.packet);if(!r)return null;const n=i.timestampInSamples+i.durationInSamples,s=yield this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:n,vorbisLastBlocksize:i.vorbisBlockSize},t)})}getPacket(e,t){return y(this,null,function*(){var i,r;if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const n=oe(e*this.internalSampleRate);if(0===n)return this.getFirstPacket(t);if(n<0)return null;I(this.bitstream.lastMetadataPacket);const s=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!s)return null;let a=s.startPage,o=this.demuxer.reader.fileSize;const l=[a];e:for(;a.headerStartPos+a.totalSizen?o=c.headerStartPos:(a=c,l.push(c));continue e}i=c.headerStartPos+c.totalSize}}let c=s.startPage;for(const e of l){if(e.granulePosition===a.granulePosition)break;(!c||e.headerStartPos>c.headerStartPos)&&(c=e)}let u=c;const d=[u];for(;u.serialNumber!==this.bitstream.serialNumber||u.granulePosition!==a.granulePosition;){const e=u.headerStartPos+u.totalSize;let t=this.demuxer.reader.requestSliceRange(e,bn,Tn);Ce(t)&&(t=yield t),I(t);const i=vn(t);I(i),u=i,u.serialNumber===this.bitstream.serialNumber&&d.push(u)}I(-1!==u.granulePosition);let h,f,m=null,p=u,g=0;if(u.headerStartPos===s.startPage.headerStartPos)h=this.granulePositionToTimestampInSamples(0),f=!0,m=0;else{h=0,f=!1;for(let t=u.lacingValues.length-1;t>=0;t--){if(u.lacingValues[t]<255){m=t+1;break}}if(null===m)throw new Error("Invalid page with granule position: no packets end on this page.");g=m-1;const e={data:Oi,endPage:p,endSegmentIndex:g};if(yield this.demuxer.findNextPacketStart(e)){const e=xn(d,u,m);I(e);const t=In(d,e.page,e.segmentIndex);t&&(u=t.page,m=t.segmentIndex)}else for(;;){const e=xn(d,u,m);if(!e)break;const t=In(d,e.page,e.segmentIndex);if(!t)break;if(u=t.page,m=t.segmentIndex,e.page.headerStartPos!==p.headerStartPos){p=e.page,g=e.segmentIndex;break}}}let k=null,y=null;for(;null!==u;){I(null!==m);const e=yield this.demuxer.readPacket(u,m);if(!e)break;if(!(u.headerStartPos===s.startPage.headerStartPos&&mn||Math.max(a.timestampInSamples,0)===n))break}const a=yield this.demuxer.findNextPacketStart(e);if(!a)break;u=a.startPage,m=a.startSegmentIndex}return k})}getPacketSequential(e,t){return y(this,null,function*(){const i=yield this.sequentialScanMutex.acquire();try{const i=oe(e*this.internalSampleRate);e=i/this.internalSampleRate;const r=G(this.sequentialScanCache,i,e=>e.timestampInSamples);let n;if(-1!==r){const e=this.sequentialScanCache[r];n=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else n=yield this.getFirstPacket(t);let s=0;for(;n&&n.timestampe)break;if(n=i,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(n);I(e),this.sequentialScanCache.length>0&&I(C(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return n}finally{i()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const In=(e,t,i)=>{let r=t,n=i;e:for(;;){for(n--;n>=0;n--){if(r.lacingValues[n]<255){n++;break e}}I(-1===n);if(!(1&r.headerType)){n=0;break}const t=Z(e,e=>e.headerStartPos{if(i>0)return{page:t,segmentIndex:i-1};const r=Z(e,e=>e.headerStartPosy(this,null,function*(){var e,t;let i=this.reader.requestSlice(0,12);Ce(i)&&(i=yield i),I(i);const r=el(i,4),n="RIFX"!==r,s="RF64"===r,a=Vo(i,n);let o=s?this.reader.fileSize:Math.min(a+8,null!=(e=this.reader.fileSize)?e:1/0);if("WAVE"!==el(i,4))throw new Error("Invalid WAVE file - wrong format");let l=0,c=null,u=i.filePos;for(;null===o||u=18&&357!==n){const e=Uo(r,i),s=t-18;if(Math.min(s,e)>=22&&n===Cn.EXTENSIBLE){r.skip(6);const e=Lo(r,16);n=e[0]|e[1]<<8}}if(n!==Cn.MULAW&&n!==Cn.ALAW||(l=8),n!==Cn.PCM&&n!==Cn.IEEE_FLOAT&&n!==Cn.ALAW&&n!==Cn.MULAW)throw new Error(`Unsupported WAVE codec (format tag ${n}). Only integer/float PCM, A-law, and \u03bc-law are supported.`);if(n===Cn.PCM&&![8,16,24,32].includes(l))throw new Error(`Unsupported WAVE PCM bit depth (${l}). Only 8, 16, 24, and 32 bits are supported.`);if(n===Cn.IEEE_FLOAT&&![32,64].includes(l))throw new Error(`Unsupported WAVE float bit depth (${l}). Only 32 and 64 bits are supported.`);this.audioInfo={format:n,numberOfChannels:s,sampleRate:a,sampleSizeInBytes:Math.ceil(l/8),blockSizeInBytes:o}})}parseListChunk(e,t,i){return y(this,null,function*(){var r,n,s,a,o,l,c,u,d,h,f;let m=this.reader.requestSlice(e,t);if(Ce(m)&&(m=yield m),!m)return;const p=el(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=el(m,4),t=Vo(m,i),p=Lo(m,t);let k=0;for(let i=0;i0&&(null!=(l=this.metadataTags).trackNumber||(l.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=(c=this.metadataTags).tracksTotal||(c.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||null!=(u=this.metadataTags).date||(u.date=e)}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&(null!=(d=this.metadataTags).date||(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":null!=(h=this.metadataTags).genre||(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":null!=(f=this.metadataTags).comment||(f.comment=y)}g+=8+t+(1&t)}})}parseId3Chunk(e,t){return y(this,null,function*(){let i=this.reader.requestSlice(e,t);if(Ce(i)&&(i=yield i),!i)return;const r=dl(i);if(r){const n=t-ol;if(r.size=Math.min(r.size,n),r.size>0){const t=i.slice(e+ol,r.size);hl(t,r,this.metadataTags)}}})}getCodec(){if(I(this.audioInfo),this.audioInfo.format===Cn.MULAW)return"ulaw";if(this.audioInfo.format===Cn.ALAW)return"alaw";if(this.audioInfo.format===Cn.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}if(this.audioInfo.format===Cn.IEEE_FLOAT){if(4===this.audioInfo.sampleSizeInBytes)return"pcm-f32";if(8===this.audioInfo.sampleSizeInBytes)return"pcm-f64"}I(!1)}getMimeType(){return y(this,null,function*(){return"audio/wav"})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return y(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}const _n=2048;class Rn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.format}getDecoderConfig(){return y(this,null,function*(){const e=this.demuxer.getCodec();return e?(I(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null})}getNumberOfChannels(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return I(-1!==this.demuxer.dataSize),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getName(){return null}getLanguageCode(){return ae}getDisposition(){return h({},je)}getPacketAtIndex(e,t){return y(this,null,function*(){I(e>=0),I(this.demuxer.audioInfo);const i=e*_n*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const r=Math.min(_n*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);if(Ce(e)&&(e=yield e),!e)return null}let n;if(t.metadataOnly)n=Oi;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);Ce(e)&&(e=yield e),I(e),n=Lo(e,r)}const s=e*_n/this.demuxer.audioInfo.sampleRate,a=r/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,this.demuxer.lastKnownPacketIndex),new Li(n,"key",s,a,e,r)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getPacket(e,t){return y(this,null,function*(){I(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/_n,(this.demuxer.dataSize-1)/(_n*this.demuxer.audioInfo.blockSizeInBytes)));if(i<0)return null;const r=yield this.getPacketAtIndex(i,t);if(r)return r;if(0===i)return null;I(null===this.demuxer.reader.fileSize);let n=yield this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;n;){const e=yield this.getNextPacket(n,t);if(!e)break;n=e}return n})}getNextPacket(e,t){I(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/_n);return this.getPacketAtIndex(i+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Fn=e=>{const t=e.filePos,i=Lo(e,9),r=new Ke(i);if(4095!==r.readBits(12))return null;r.skipBits(1);if(0!==r.readBits(2))return null;const n=r.readBits(1),s=r.readBits(2)+1,a=r.readBits(4);if(15===a)return null;r.skipBits(1);const o=r.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);const l=r.readBits(13);r.skipBits(11);const c=r.readBits(2)+1;if(1!==c)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===n?e.filePos-=2:u=r.readBits(16),{objectType:s,samplingFrequencyIndex:a,channelConfiguration:o,frameLength:l,numberOfAacFrames:c,crcCheck:u,startPos:t}},An=1024;class Dn extends Ni{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.trackBackings=[],this.readingMutex=new V,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return y(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();I(this.firstFrameHeader),this.trackBackings=[new Mn(this)]}))()})}advanceReader(){return y(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,ol);if(Ce(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=dl(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(Ce(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Fn(e);if(!t)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&t.startPos+t.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=t);const i=Xe[t.samplingFrequencyIndex];I(void 0!==i);const r=An/i,n={timestamp:this.nextTimestampInSamples/i,duration:r,dataStart:t.startPos,dataSize:t.frameLength};this.loadedSamples.push(n),this.nextTimestampInSamples+=An,this.lastLoadedPos=t.startPos+t.frameLength})}getMimeType(){return y(this,null,function*(){return"audio/aac"})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return y(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0;for(;;){let t=this.reader.requestSlice(e,ol);if(Ce(t)&&(t=yield t),!t)break;const i=dl(t);if(!i)break;let r=this.reader.requestSlice(t.filePos,i.size);if(Ce(r)&&(r=yield r),!r)break;hl(r,i,this.metadataTags),e=t.filePos+i.size}return this.metadataTags}finally{e()}})}}class Mn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/An}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return null})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getName(){return null}getLanguageCode(){return ae}getCodec(){return"aac"}getInternalCodecId(){return I(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){I(this.demuxer.firstFrameHeader);const e=$e[this.demuxer.firstFrameHeader.channelConfiguration];return I(void 0!==e),e}getSampleRate(){I(this.demuxer.firstFrameHeader);const e=Xe[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return I(void 0!==e),e}getDisposition(){return h({},je)}getDecoderConfig(){return y(this,null,function*(){return I(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}})}getPacketAtIndex(e,t){return y(this,null,function*(){if(-1===e)return null;const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=Oi;else{let e=this.demuxer.reader.requestSlice(i.dataStart,i.dataSize);if(Ce(e)&&(e=yield e),!e)return null;r=Lo(e,i.dataSize)}return new Li(r,"key",i.timestamp,i.duration,e,i.dataSize)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getNextPacket(e,t){return y(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{const i=$(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}})}getPacket(e,t){return y(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=G(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1y(this,null,function*(){var e;let t=0;for(;;){let e=this.reader.requestSlice(t,ol);if(Ce(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const i=dl(e);if(!i)break;let r=this.reader.requestSlice(e.filePos,i.size);Ce(r)&&(r=yield r),I(r),hl(r,i,this.metadataTags),t=e.filePos+i.size}for(t+=4;null===this.reader.fileSize||ts.end-6)return{num:a.num,blockSize:a.blockSize,sampleRate:a.sampleRate,size:s.end-e,isLastFrame:!0};if(255===zo(s)){const t=s.filePos;if(zo(s)!==(1===this.blockingBit?249:248)){s.filePos=t;continue}s.skip(-2);const i=s.filePos-e,r=this.readFlacFrameHeader({slice:s,isFirstPacket:!1});if(!r){s.filePos=t;continue}if(0===this.blockingBit){if(r.num-a.num!==1){s.filePos=t;continue}}else if(r.num-a.num!==a.blockSize){s.filePos=t;continue}return{num:a.num,blockSize:a.blockSize,sampleRate:a.sampleRate,size:i,isLastFrame:!1}}}})}readFlacFrameHeader({slice:e,isFirstPacket:t}){const i=e.filePos,r=Lo(e,4),n=new Ke(r);if(32764!==n.readBits(15))return null;if(null===this.blockingBit){I(t);const e=n.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){I(!t);if(1!==n.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");I(!t);if(0!==n.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*u(2,e):6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?u(2,e):null)(n.readBits(4));if(!s)return null;I(this.audioInfo);const a=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(n.readBits(4),this.audioInfo.sampleRate);if(!a)return null;n.readBits(4),n.readBits(3);if(0!==n.readBits(1))return null;const o=(e=>{let t=0;const i=new Ke(Lo(e,1));for(;1===i.readBits(1);)t++;if(0===t)return i.readBits(7);const r=[],n=t-1,s=new Ke(Lo(e,n)),a=8-t-1;for(let o=0;oe|t<"uncommon-u16"===t?qo(e)+1:"uncommon-u8"===t?zo(e)+1:"number"===typeof t?t:(te(t),void I(!1)))(e,s),c=((e,t)=>"uncommon-u16"===t?qo(e):"uncommon-u16-10"===t?10*qo(e):"uncommon-u8"===t?zo(e):"number"===typeof t?t:null)(e,a);if(null===c)return null;if(c!==this.audioInfo.sampleRate)return null;const d=e.filePos-i,h=zo(e);e.skip(-d),e.skip(-1);const f=(e=>{let t=0;for(const i of e){t^=i;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(Lo(e,d));return h!==f?null:{num:o,blockSize:l,sampleRate:c}}advanceReader(){return y(this,null,function*(){yield this.readMetadata(),I(null!==this.lastLoadedPos),I(this.audioInfo);const e=this.lastLoadedPos,t=yield this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],r={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(r),t.isLastFrame&&(this.lastSampleLoaded=!0)})}}class On{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return ae}getTimeResolution(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return I(this.demuxer.audioInfo),0===this.demuxer.audioInfo.totalSamples?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getDisposition(){return h({},je)}getDecoderConfig(){return y(this,null,function*(){return I(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}})}getPacket(e,t){return y(this,null,function*(){if(I(this.demuxer.audioInfo),e<0)return null;const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=G(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===i){yield this.demuxer.advanceReader();continue}const r=this.demuxer.loadedSamples[i],n=r.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(n+r.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(i,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);yield this.demuxer.advanceReader()}}finally{i()}})}getNextPacket(e,t){return y(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{const i=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{i()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}getPacketAtIndex(e,t){return y(this,null,function*(){const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=Oi;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(Ce(e)&&(e=yield e),!e)return null;r=Lo(e,i.byteSize)}I(this.demuxer.audioInfo);const n=i.blockOffset/this.demuxer.audioInfo.sampleRate,s=i.blockSize/this.demuxer.audioInfo.sampleRate;return new Li(r,"key",n,s,e,i.byteSize)})}getFirstPacket(e){return y(this,null,function*(){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)})}}const Ln=9e4,zn=u(2,33),Un=188,qn="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",Wn=new Set([133,134,162]),Hn=new Set;class Vn extends Ni{constructor(e){super(e),this.metadataPromise=null,this.elementaryStreams=[],this.trackBackingEntries=[],this.packetOffset=0,this.packetStride=-1,this.sectionEndPositions=[],this.seekChunkSize=5242880,this.minReferencePointByteDistance=-1,this.timestampWrapInfo=null,this.reader=e._reader}readMetadata(){return y(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){let e=this.reader.requestSlice(0,205);Ce(e)&&(e=yield e),I(e);const t=Lo(e,205);if(71===t[0]&&71===t[188])this.packetOffset=0,this.packetStride=Un;else if(71===t[0]&&71===t[204])this.packetOffset=0,this.packetStride=204;else{if(71!==t[4]||71!==t[196])throw new Error("Unreachable.");this.packetOffset=4,this.packetStride=192}this.minReferencePointByteDistance=256*this.packetStride;let i=this.packetOffset,r=null,n=!1,s=!1;for(;;){const e=yield this.readPacketHeader(i);if(!e)break;if(0===e.payloadUnitStartIndicator){i+=this.packetStride;continue}if(s&&!this.elementaryStreams.some(t=>t.pid===e.pid)){i+=this.packetStride;continue}const t=yield this.readSection(i,!0,!s);if(!t)break;const a=3,o=32;let l=!1;if(!s&&0!==t.pid){if(!(0===t.payload[0]&&0===t.payload[1]&&1===t.payload[2])){const e=new Ke(t.payload),i=e.readAlignedByte();e.skipBits(8*i);l=2===e.readBits(8)}}if(0!==t.pid||n)if(t.pid!==r&&!l||s){const e=this.elementaryStreams.find(e=>e.pid===t.pid);e:if(e&&!e.initialized){const i=Kn(this,t,!0);if(!i)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${e.pid}`);if(e.firstSection=t,e.canBeTrustedWithKeyPackets=1===t.randomAccessIndicator,this.input._initInput){const i=(yield this.input._initInput._getDemuxer()).elementaryStreams.find(i=>i.pid===t.pid&&i.info.codec===e.info.codec);if(i){e.info=i.info,e.initialized=!0;break e}}const r=new Yn(e,i);if("video"===e.info.type){for(;;){if(r.suppliedPacket=null,yield r.markNextPacket(),"avc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(e.info.avcCodecInfo=ht(r.suppliedPacket.data),!e.info.avcCodecInfo)continue;const t=e.info.avcCodecInfo.sequenceParameterSets[0];I(t);const i=gt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight;const n=i.pixelAspectRatio.num,s=i.pixelAspectRatio.den;n>0&&s>0&&(n>s?(e.info.squarePixelWidth=Math.round(e.info.width*n/s),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*s/n))),e.info.colorSpace={primaries:N[i.colourPrimaries],transfer:L[i.transferCharacteristics],matrix:U[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}if("hevc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(e.info.hevcCodecInfo=St(r.suppliedPacket.data),!e.info.hevcCodecInfo)continue;const t=e.info.hevcCodecInfo.arrays.find(e=>e.nalUnitType===it.SPS_NUT).nalUnits[0];I(t);const i=vt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight,i.pixelAspectRatio.num>i.pixelAspectRatio.den?(e.info.squarePixelWidth=Math.round(e.info.width*i.pixelAspectRatio.num/i.pixelAspectRatio.den),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*i.pixelAspectRatio.den/i.pixelAspectRatio.num)),e.info.colorSpace={primaries:N[i.colourPrimaries],transfer:L[i.transferCharacteristics],matrix:U[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}throw new Error("Unhandled.")}e.info.decoderConfig={codec:bi({width:e.info.width,height:e.info.height,codec:e.info.codec,codecDescription:null,colorSpace:e.info.colorSpace,avcType:1,avcCodecInfo:e.info.avcCodecInfo,hevcCodecInfo:e.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null,proresFormat:null}),codedWidth:e.info.width,codedHeight:e.info.height,colorSpace:e.info.colorSpace},e.info.width===e.info.squarePixelWidth&&e.info.height===e.info.squarePixelHeight||(e.info.decoderConfig.displayAspectWidth=e.info.squarePixelWidth,e.info.decoderConfig.displayAspectHeight=e.info.squarePixelHeight),e.initialized=!0}else{if(yield r.markNextPacket(),!r.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${e.pid}`);if("aac"===e.info.codec){const t=No.tempFromBytes(r.suppliedPacket.data),i=Fn(t);if(!i)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");e.info.aacCodecInfo={isMpeg2:!1,objectType:i.objectType},e.info.numberOfChannels=$e[i.channelConfiguration],e.info.sampleRate=Xe[i.samplingFrequencyIndex]}else if("mp3"===e.info.codec){const t=jo(No.tempFromBytes(r.suppliedPacket.data)),i=Ri(t,r.suppliedPacket.data.byteLength);if(!i.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");e.info.numberOfChannels=Mi(i.header.channel),e.info.sampleRate=i.header.sampleRate}else if("ac3"===e.info.codec){const t=jt(r.suppliedPacket.data);if(!t)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(3===t.fscod)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=Vt[t.acmod]+t.lfeon,e.info.sampleRate=Je[t.fscod]}else if("eac3"===e.info.codec){const t=$t(r.suppliedPacket.data);if(!t)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");const i=Gt(t);if(null===i)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=Qt(t),e.info.sampleRate=i}else{if("dts"!==e.info.codec)throw new Error("Unhandled.");{const t=si(r.suppliedPacket.data);if(!t)throw new Error("Invalid DTS audio stream; could not read frame header from first packet.");e.info.numberOfChannels=t.numberOfChannels,e.info.sampleRate=t.sampleRate,t.core&&(e.info.dtsFormat=t.hasExtensions?"dtsh":"dtsc")}}e.info.decoderConfig={codec:vi({codec:e.info.codec,codecDescription:null,aacCodecInfo:e.info.aacCodecInfo,dtsFormat:e.info.dtsFormat}),numberOfChannels:e.info.numberOfChannels,sampleRate:e.info.sampleRate},e.initialized=!0}}}else{const e=new Ke(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(12);const r=e.readBits(12);e.skipBits(43),e.readBits(13),e.skipBits(6);const n=e.readBits(10),l=e.pos+8*n;let c=!1;for(;e.pos=4){const t=e.readBits(32);c||(c=1212435798===t||1212436562===t)}e.pos=r}for(e.pos=l;8*(r+a)-e.pos>o;){const t=e.readBits(8);e.skipBits(3);const i=e.readBits(13);e.skipBits(6);const r=e.readBits(10),n=e.pos+8*r;let s=!1,a=!1,o=!1;for(;e.pos=4){const t=e.readBits(32);o||(o=1146376960===(4294967040&t))}e.pos=r}let l=null;const u=c&&Wn.has(t)?130:t;switch(u){case 27:case 36:l={type:"video",codec:27===t?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:case 130:case 138:{let e;e=3===u||4===u?"mp3":15===u?"aac":129===u?"ac3":135===u?"eac3":"dts",l={type:"audio",codec:e,decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:a?l={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:s?l={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:o&&(l={type:"audio",codec:"dts",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1});break;default:Hn.has(t)||(We._warn(`Note: MPEG-TS streams with stream_type 0x${t.toString(16)} are not currently supported.`),Hn.add(t))}l&&this.elementaryStreams.push({demuxer:this,pid:i,streamType:t,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:l,referencePesPackets:[]})}s=!0}else{const e=new Ke(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(14);const s=e.readBits(10);for(e.skipBits(40);8*(s+a)-e.pos>o;){const t=e.readBits(16);e.skipBits(3);const i=e.readBits(13);if(0!==t){if(null!==r)throw new Error("Only files with a single program are supported.");r=i}}if(null===r)throw new Error("Program Association Table must link to a Program Map Table.");n=!0}if(s&&this.elementaryStreams.every(e=>e.initialized))break;i+=this.packetStride}if(!s){if(!n)throw new Error("No Program Association Table found in the file.");throw new Error("No Program Map Table found in the file.")}for(const a of this.elementaryStreams)a.initialized&&("video"===a.info.type?this.trackBackingEntries.push(new $n(a)):this.trackBackingEntries.push(new Gn(a)))}))()})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackingEntries})}getMetadataTags(){return y(this,null,function*(){return{}})}getMimeType(){return y(this,null,function*(){yield this.readMetadata();return(e=>{let t="video/MP2T";const i=[...new Set(e.filter(Boolean))];return i.length>0&&(t+=`; codecs="${i.join(", ")}"`),t})(yield Promise.all(this.trackBackingEntries.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null}))))})}readSection(e,t,i=!1){return y(this,null,function*(){let r=e,n=e;const s=[];let a,o=0,l=null,c=!0,u=0;for(;;){const e=yield this.readPacket(n);if(n+=this.packetStride,!e)break;if(l){if(e.pid!==l.pid){if(i)break;continue}if(1===e.payloadUnitStartIndicator)break}else{if(0===e.payloadUnitStartIndicator)break;l=e}const a=!!(2&e.adaptationFieldControl),d=!!(1&e.adaptationFieldControl);let h=0;if(a&&(h=1+e.body[0],e===l&&h>1&&(u=e.body[1]>>6&1)),d&&(0===h?(s.push(e.body),o+=e.body.byteLength):(s.push(e.body.subarray(h)),o+=e.body.byteLength-h)),r=n,!t&&o>=64){c=!1;break}if(-1!==$(this.sectionEndPositions,r,e=>e)){c=!1;break}}if(c){const e=G(this.sectionEndPositions,r,e=>e);this.sectionEndPositions.splice(e+1,0,r)}if(!l)return null;if(1===s.length)a=s[0];else{const e=s.reduce((e,t)=>e+t.length,0);a=new Uint8Array(e);let t=0;for(const i of s)a.set(i,t),t+=i.length}return{startPos:e,endPos:t?r:null,pid:l.pid,payload:a,randomAccessIndicator:u}})}readPacketHeader(e){return y(this,null,function*(){let t=this.reader.requestSlice(e,4);if(Ce(t)&&(t=yield t),!t)return null;if(71!==zo(t))throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const i=qo(t);return{payloadUnitStartIndicator:i>>14&1,pid:8191&i,adaptationFieldControl:zo(t)>>4&3}})}readPacket(e){return y(this,null,function*(){let t=this.reader.requestSlice(e,Un);if(Ce(t)&&(t=yield t),!t)return null;const i=Lo(t,Un);if(71!==i[0])throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const r=(i[1]<<8)+i[2];return{payloadUnitStartIndicator:r>>14&1,pid:8191&r,adaptationFieldControl:i[3]>>4&3,body:i.subarray(4)}})}normalizeTimestamp(e){if(!this.timestampWrapInfo){const t=54e5;this.timestampWrapInfo={reference:e-t,offset:e>=zn-t?-zn:zn}}const{reference:t,offset:i}=this.timestampWrapInfo;return i<0&&e>=t||i>0&&e{if(t.payload.byteLength<3)return null;const r=new Ke(t.payload);if(1!==r.readBits(24))return null;const n=r.readBits(8);if(r.skipBits(16),188===n||190===n||191===n||240===n||241===n||255===n||242===n||248===n)return null;r.skipBits(8);const s=r.readBits(2);r.skipBits(14);let a=null;if(2===s||3===s)a=0,r.skipBits(4),a+=r.readBits(3)*(1<<30),r.skipBits(1),a+=32768*r.readBits(15),r.skipBits(1),a+=r.readBits(15),a=e.normalizeTimestamp(a);else if(i)throw new Error(qn);return{sectionStartPos:t.startPos,sectionEndPos:t.endPos,pts:a,randomAccessIndicator:t.randomAccessIndicator}},Kn=(e,t,i)=>{I(null!==t.endPos);const r=jn(e,t,i);if(!r)return null;const n=new Ke(t.payload);n.skipBits(32);const s=n.readBits(16);n.skipBits(16);const a=n.readBits(8),o=n.pos+8*a;n.pos=o;const l=o/8;I(Number.isInteger(l));const c=t.payload.subarray(l,s>0?6+s:t.payload.byteLength);return f(h({},r),{data:c})};class Xn{constructor(e){this.elementaryStream=e,this.packetBuffers=new WeakMap,this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){const e=this.elementaryStream.demuxer,t=this.elementaryStream.info.type;let i=0;for(const r of e.trackBackingEntries)if(r.getType()===t&&i++,I(r instanceof Xn),r.elementaryStream===this.elementaryStream)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return ae}getDisposition(){return f(h({},je),{primary:!1})}getTimeResolution(){return Ln}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return null})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}createEncodedPacket(e,t,i){let r;return r=this.allPacketsAreKeyPackets()||1===e.randomAccessIndicator?"key":"delta",new Li(i.metadataOnly?Oi:e.data,r,e.pts/Ln,Math.max(t/Ln,0),e.sequenceNumber,e.data.byteLength)}getFirstPacket(e){return y(this,null,function*(){const t=this.elementaryStream.firstSection;I(t);const i=Kn(this.elementaryStream.demuxer,t,!0);I(i);const r=new Yn(this.elementaryStream,i),n=new Jn(this,r),s=yield n.readNext();if(!s)return null;const a=this.createEncodedPacket(s.packet,s.duration,e);return this.packetBuffers.set(a,n),this.packetSectionStarts.set(a,s.packet.sectionStartPos),a})}getNextPacket(e,t){return y(this,null,function*(){let i=this.packetBuffers.get(e);if(i){const r=yield i.readNext();if(!r)return null;this.packetBuffers.delete(e);const n=this.createEncodedPacket(r.packet,r.duration,t);return this.packetBuffers.set(n,i),this.packetSectionStarts.set(n,r.packet.sectionStartPos),n}const r=this.packetSectionStarts.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");const n=this.elementaryStream.demuxer,s=yield n.readSection(r,!0);I(s);const a=Kn(n,s,!0);I(a);const o=new Yn(this.elementaryStream,a);i=new Jn(this,o);const l=e.sequenceNumber;for(;;){const e=yield i.readNext();if(!e)return null;if(e.packet.sequenceNumber>l){const r=this.createEncodedPacket(e.packet,e.duration,t);return this.packetBuffers.set(r,i),this.packetSectionStarts.set(r,e.packet.sectionStartPos),r}}})}getNextKeyPacket(e,t){return y(this,null,function*(){let i=e;for(;;){if(i=yield this.getNextPacket(i,t),!i)return null;if("key"===i.type)return i}})}getPacket(e,t){return this.doPacketLookup(e,!1,t)}getKeyPacket(e,t){return this.doPacketLookup(e,!0,t)}doPacketLookup(e,t,i){return y(this,null,function*(){var r,n,s,a,o,l;const c=oe(e*Ln),u=this.elementaryStream.demuxer,{reader:d,seekChunkSize:h}=u,f=this.elementaryStream.pid,m=(e,t,i)=>y(this,null,function*(){let r=e;for(;re.pts),v=-1!==T?b[T]:null;if(v&&c-v.pts<45e3)k=v.sectionStartPos;else{let e=0;if(null!==d.fileSize){const t=Math.ceil(d.fileSize/h);if(t>1){let i=0,r=t-1;for(e=i;i<=r;){const t=Math.floor((i+r)/2),n=ue(t*h,u.packetStride)+g.sectionStartPos,s=n+h,a=yield m(n,s,!1);a?a.pesPacketHeader.pts<=c?(e=t,i=t+1):r=t-1:r=t-1}}}k=ue(e*h,u.packetStride)+g.sectionStartPos}const S=yield m(k,null!=(r=d.fileSize)?r:1/0,!1);let w=null!=(n=null==S?void 0:S.pesPacketHeader)?n:null;w||(w=g);const P=this.getReorderSize(),x=(e,t)=>y(this,null,function*(){var r,n;const s=yield u.readSection(e,!0);I(s);const a=Kn(u,s,!0);I(a);const o=new Yn(this.elementaryStream,a),l=new Jn(this,o);for(;;){if((null!=(n=null==(r=C(l.presentationOrderPackets))?void 0:r.pts)?n:-1/0)>=c)break;if(!(yield l.readNextPacket()))break}const d=ee(l.presentationOrderPackets,t);if(-1===d)return null;const h=l.presentationOrderPackets[d],f=0===d?0:h.pts-l.presentationOrderPackets[d-1].pts;for(;l.decodeOrderPackets[0]!==h;)l.decodeOrderPackets.shift();l.lastDuration=f;const m=yield l.readNext();I(m);const p=this.createEncodedPacket(m.packet,m.duration,i);return this.packetBuffers.set(p,l),this.packetSectionStarts.set(p,m.packet.sectionStartPos),p});if(!t||this.allPacketsAreKeyPackets()){e:for(;;){let e=w.sectionStartPos+u.packetStride;for(;;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,!1);if(t){const e=jn(u,t,!1);if(e&&null!==e.pts){if(e.pts>c)break e;w=e,Qn(this.elementaryStream,w);break}}}e+=u.packetStride}}e:for(let e=0;e=u.packetOffset;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,!1);if(t){const e=jn(u,t,!1);if(e&&null!==e.pts){w=e;break}}}e-=u.packetStride}}return x(w.sectionStartPos,e=>e.pts<=c)}{let e=k,t=null;const i=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let r=null;const n=e<=g.sectionStartPos;let k,y=null;if(n)k=g,y=p;else{const t=yield m(e,null!=(s=d.fileSize)?s:1/0,i);k=null!=(a=null==t?void 0:t.pesPacketHeader)?a:null,y=null!=(o=null==t?void 0:t.section)?o:null}let b=!1,T=0;e:for(;k&&!(null!==t&&k.sectionStartPos>=t);){if(k.pts<=c){let e;if(this.elementaryStream.canBeTrustedWithKeyPackets)e=1===k.randomAccessIndicator;else{I(y);const t=Kn(u,y,!0);I(t);const i=new Yn(this.elementaryStream,t);yield i.markNextPacket(),e=1===(null==(l=i.suppliedPacket)?void 0:l.randomAccessIndicator)}e&&(r=k)}if(k.pts>c&&(b=!0),b&&(T++,T>P))break;let e=k.sectionStartPos+u.packetStride;for(;;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,i);if(t){const e=jn(u,t,!1);if(e&&null!==e.pts){k=e,y=t,Qn(this.elementaryStream,k);break}}}e+=u.packetStride}}if(r){let e=r;if(0===T)e:for(let r=0;r=u.packetOffset;){const r=yield u.readPacketHeader(t);if(!r)break e;if(r.pid===f&&1===r.payloadUnitStartIndicator){const r=yield u.readSection(t,i);if(r){const t=jn(u,r,!1);if(t&&null!==t.pts){e=t;break}}}t-=u.packetStride}}const t=yield x(e.sectionStartPos,e=>e.pts<=c&&1===e.randomAccessIndicator);return I(t),t}if(n)return null;t=e,e=Math.max(ue(e-g.sectionStartPos-h,u.packetStride)+g.sectionStartPos,g.sectionStartPos)}}})}}class $n extends Xn{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}getColorSpace(){return y(this,null,function*(){return this.elementaryStream.info.colorSpace})}canBeTransparent(){return y(this,null,function*(){return!1})}getDecoderConfig(){return y(this,null,function*(){return I(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig})}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}}class Gn extends Xn{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}getDecoderConfig(){return y(this,null,function*(){return I(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig})}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}}const Qn=(e,t)=>{const i=e.referencePesPackets,r=G(i,t.sectionStartPos,e=>e.sectionStartPos);if(r>=0){const n=i[r];if(t.pts<=n.pts)return!1;const s=e.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-n.sectionStartPos=e?e:this.bufferData(e-t).then(()=>Math.min(this.endPos-this.currentPos,e))}getCurrentPesPacket(){const e=this.pesPackets[this.currentPesPacketIndex];return I(e),e}bufferData(e){return y(this,null,function*(){const t=this.endPos+e;for(;this.endPos=c)break;u=t;const r=o+u;if(u+3>=c){this.seekTo(r);break}const d=l[u+1],h=l[u+2],f=l[u+3];let m=0;if(0===d&&0===h&&1===f?m=4:0===d&&1===h&&(m=3),0===m){u++;continue}const p=r;null!=n||(n=p);const g=u+m,k=g+i,y=6;if(k+("avc"===e?y:1)>c){this.seekTo(r);break}const b=l[g];let T,v,S;if("avc"===e)T=ot(b),v=T===et.NON_IDR_SLICE||T===et.SLICE_DPA||T===et.IDR,S=T===et.SEI||T===et.SPS||T===et.PPS||T===et.AUD;else{T=Tt(b);if(((1&b)<<5|l[g+1]>>3)>0){u+=m;continue}v=T<=it.RASL_R||T>=it.BLA_W_LP&&T<=21,S=T>=it.VPS_NUT&&T<=37||T===it.PREFIX_SEI_NUT||T>=41&&T<=44||T>=48&&T<=55}let w=!1;if(v){let t;if("avc"===e){const e=l.subarray(k,k+y),i=B(new Ke(e));t=!s||i<=a,a=i}else t=l[k]>>7===1;t&&(s?w=!0:s=!0)}else S&&s&&(w=!0);if(w){const e=p-n;return this.seekTo(n),this.supplyPacket(e,0)}u+=m}if(rn){const e=this.endPos-n;return this.seekTo(n),this.supplyPacket(e,0)}}else{const n=r.info.codec,s=128;for(;;){let a=this.ensureBuffered(s);Ce(a)&&(a=yield a);const o=this.currentPos;for(;this.currentPos-o>6,a=63&i[4];if(3===n||a>37){this.seekTo(e+1);continue}const o=Kt[3*a+n];I(void 0!==o),this.seekTo(e),t=this.ensureBuffered(o),Ce(t)&&(t=yield t);const l=Math.round(13824e4/r.info.sampleRate);return this.supplyPacket(t,l)}if("eac3"===n){if(11!==s)continue;this.skip(-1);const e=this.currentPos;let t=this.ensureBuffered(5);if(Ce(t)&&(t=yield t),t<5)return;const i=this.readBytes(5);if(11!==i[0]||119!==i[1]){this.seekTo(e+1);continue}const n=2*(((7&i[2])<<8|i[3])+1),a=3===i[4]>>6?3:i[4]>>4&3,o=Xt[a];this.seekTo(e),t=this.ensureBuffered(n),Ce(t)&&(t=yield t);const l=256*o,c=Math.round(l*Ln/r.info.sampleRate);return this.supplyPacket(t,c)}if("dts"===n){if(127!==s&&100!==s)continue;this.skip(-1);const n=this.currentPos;let a=this.ensureBuffered(18);if(Ce(a)&&(a=yield a),a<18)return;const o=this.readBytes(18),l=oi(o);let c=l?null:li(o);if(!l&&!c){this.seekTo(n+1);continue}if(c&&!c.asset){this.seekTo(n);const t=Math.min(c.frameSize,4096);let i=this.ensureBuffered(t);Ce(i)&&(i=yield i),c=null!=(e=li(this.readBytes(i)))?e:c}let u=l?l.frameSize:c.frameSize;if(l){let e=4*Math.ceil(l.frameSize/4);for(;;){this.seekTo(n);const t=e+10;let i=this.ensureBuffered(t);if(Ce(i)&&(i=yield i),i=0)}readNext(){return y(this,null,function*(){if(0===this.decodeOrderPackets.length){if(!(yield this.readNextPacket()))return null}yield this.ensureCurrentPacketHasNext();const e=this.decodeOrderPackets[0],t=this.presentationOrderPackets.indexOf(e);let i;if(I(-1!==t),t===this.presentationOrderPackets.length-1)i=this.lastDuration;else{i=this.presentationOrderPackets[t+1].pts-e.pts,this.lastDuration=i}for(this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){const e=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(e))break;this.presentationOrderPackets.shift()}return{packet:e,duration:i}})}readNextPacket(){return y(this,null,function*(){if(this.reachedEnd)return!1;let e;return this.context.suppliedPacket||(yield this.context.markNextPacket()),e=this.context.suppliedPacket,this.context.suppliedPacket=null,e?(this.decodeOrderPackets.push(e),this.processPacketThroughReorderBuffer(e),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)})}ensureCurrentPacketHasNext(){return y(this,null,function*(){const e=this.decodeOrderPackets[0];for(I(e);;){const t=this.presentationOrderPackets.indexOf(e);if(-1!==t&&t<=this.presentationOrderPackets.length-2)break;if(!(yield this.readNextPacket()))break}})}processPacketThroughReorderBuffer(e){if(this.reorderBuffer.push(e),this.reorderBuffer.length>this.reorderSize){let e=0;for(let i=1;ie.pts-t.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}}const Zn="application/vnd.apple.mpegurl",es="#EXT-X-STREAM-INF:",ts="#EXT-X-I-FRAME-STREAM-INF:",is="#EXT-X-MEDIA:",rs="#EXTINF:",ns="#EXT-X-MAP:",ss="#EXT-X-KEY:",as="#EXT-X-MEDIA-SEQUENCE:",os="#EXT-X-BYTERANGE:",ls="#EXT-X-PROGRAM-DATE-TIME:",cs="#EXT-X-TARGETDURATION:",us="#EXT-X-PLAYLIST-TYPE:",ds=e=>0===e.length||e.startsWith("#")&&!e.startsWith("#EXT");class hs{constructor(e){this._attributes={};let t="",i="",r=!1,n=!1;for(let s=0;sy(this,null,function*(){const e=[];if(this.trackDeclarations){for(const t of this.trackDeclarations)if("video"===t.type){const i=De(e,e=>"video"===e.getType())+1;e.push(new ps(this,t,i))}else if("audio"===t.type){const i=De(e,e=>"audio"===e.getType())+1;e.push(new gs(this,t,i))}}else{if(this.firstSegment=yield this.getFirstSegment({}),!this.firstSegment)return[];const t=this.getInputForSegment(this.firstSegment),i=yield t.getTracks();for(const r of i)if("video"===r.type){const t=De(e,e=>"video"===e.getType())+1;e.push(new ps(this,{id:e.length+1,type:"video"},t))}else if("audio"===r.type){const t=De(e,e=>"audio"===e.getType())+1;e.push(new gs(this,{id:e.length+1,type:"audio"},t))}}return e}))()})}getFirstTimestampForInput(e){return y(this,null,function*(){const t=this.firstTimestampCache.get(e);if(void 0!==t)return t;const i=yield e.getFirstTimestamp();return this.firstTimestampCache.set(e,i),i})}getMediaOffset(e,t){return y(this,null,function*(){var i;const r=null!=(i=e.firstSegment)?i:e;let n;if(this.firstSegmentFirstTimestamps.has(r))n=this.firstSegmentFirstTimestamps.get(r);else{const e=this.getInputForSegment(r);n=yield this.getFirstTimestampForInput(e),this.firstSegmentFirstTimestamps.set(r,n)}if(r===e)return r.timestamp-n;const s=yield this.getFirstTimestampForInput(t),a=e.timestamp-r.timestamp,o=s-n-a;return Math.abs(o)<=Math.min(.25,a)?r.timestamp-n:e.timestamp-s})}dispose(){for(const e of this.inputCache)e.input.dispose();this.inputCache.length=0}}class ms{constructor(e,t,i){this.packetInfos=new WeakMap,this.hydrationPromise=null,this.firstInputTrack=null,this.firstSegment=null,this.segmentedInput=e,this.decl=t,this.number=i}hydrate(){var e;return null!=(e=this.hydrationPromise)?e:this.hydrationPromise=(()=>y(this,null,function*(){var e,t;if(null!=(e=this.segmentedInput).firstSegment||(e.firstSegment=yield this.segmentedInput.getFirstSegment({})),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let i=this.segmentedInput.firstSegment,r=null;for(;i;){const e=this.segmentedInput.getInputForSegment(i);if(r=null!=(t=(yield e.getTracks()).find(e=>e.type===this.decl.type&&e.number===this.number))?t:null,r)break;i=yield this.segmentedInput.getNextSegment(i,{})}if(!r)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=r,this.firstSegment=i}))()}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(e){return this.firstInputTrack?e():this.hydrate().then(e)}getDecoderConfig(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}getHasOnlyKeyPackets(){return this.delegate(()=>{var e,t,i;return null!=(i=null==(t=(e=this.firstInputTrack._backing).getHasOnlyKeyPackets)?void 0:t.call(e))?i:null})}getPairingMask(){return BigInt("1")}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}isRelativeToUnixEpoch(){return y(this,null,function*(){return yield this.hydrate(),I(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.unixEpochTimestamp===this.segmentedInput.firstSegment.timestamp})}getUnixTimeForTimestamp(e){return this.segmentedInput.getUnixTimeForTimestamp(e)}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(e){return this.segmentedInput.getDurationFromMetadata(e)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}createAdjustedPacket(e,t,i){return y(this,null,function*(){I(e.sequenceNumber>=0),I(this.segmentedInput.firstSegment);const r=yield this.segmentedInput.getMediaOffset(t,i.input),n=t.timestamp-this.segmentedInput.firstSegment.timestamp,s=e.clone({timestamp:ce(e.timestamp+r,yield i.getTimeResolution()),sequenceNumber:Math.floor(1e8*n)+e.sequenceNumber});return this.packetInfos.set(s,{segment:t,track:i,sourcePacket:e}),s})}getFirstPacket(e){return y(this,null,function*(){var t;yield this.hydrate(),I(this.firstInputTrack),I(this.firstSegment);let i=this.firstInputTrack,r=this.firstSegment;for(;;){if(i){const t=yield i._backing.getFirstPacket(e);if(t)return this.createAdjustedPacket(t,r,i)}if(r=yield this.segmentedInput.getNextSegment(r,{skipLiveWait:e.skipLiveWait}),!r)break;const n=this.segmentedInput.getInputForSegment(r);i=null!=(t=(yield n.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number))?t:null}return null})}getNextPacket(e,t){return this._getNextInternal(e,t,!1)}getNextKeyPacket(e,t){return this._getNextInternal(e,t,!0)}_getNextInternal(e,t,i){return y(this,null,function*(){const r=this.packetInfos.get(e);if(!r)throw new Error("Packet was not created from this track.");const n=i?yield r.track._backing.getNextKeyPacket(r.sourcePacket,t):yield r.track._backing.getNextPacket(r.sourcePacket,t);if(n)return this.createAdjustedPacket(n,r.segment,r.track);let s=r.segment;for(;;){const e=yield this.segmentedInput.getNextSegment(s,{skipLiveWait:t.skipLiveWait});if(!e)return null;const i=this.segmentedInput.getInputForSegment(e),n=(yield i.getTracks()).find(e=>e.type===r.track.type&&e.number===r.track.number);if(!n){s=e;continue}const a=yield n._backing.getFirstPacket(t);return a?this.createAdjustedPacket(a,e,n):null}})}getPacket(e,t){return this._getPacketInternal(e,t,!1)}getKeyPacket(e,t){return this._getPacketInternal(e,t,!0)}_getPacketInternal(e,t,i){return y(this,null,function*(){let r=yield this.segmentedInput.getSegmentAt(e,{skipLiveWait:t.skipLiveWait});if(!r)return null;for(yield this.hydrate();r;){const n=this.segmentedInput.getInputForSegment(r),s=(yield n.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number);if(!s){r=yield this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait});continue}const a=yield this.segmentedInput.getMediaOffset(r,n),o=e-a,l=i?yield s._backing.getKeyPacket(o,t):yield s._backing.getPacket(o,t);if(l)return this.createAdjustedPacket(l,r,s);r=yield this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait})}return null})}}class ps extends ms{getType(){return"video"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getCodedWidth(){return this.delegate(()=>this.firstInputTrack._backing.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.firstInputTrack._backing.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelHeight())}getRotation(){return this.delegate(()=>this.firstInputTrack._backing.getRotation())}getColorSpace(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getColorSpace())})}canBeTransparent(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.canBeTransparent())})}getDecoderConfig(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}}class gs extends ms{getType(){return"audio"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getNumberOfChannels(){return this.delegate(()=>this.firstInputTrack._backing.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.firstInputTrack._backing.getSampleRate())}getDecoderConfig(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}}Re();const ks=1/0;"undefined"!==typeof FinalizationRegistry&&new FinalizationRegistry(e=>{e()});class ys extends ze{constructor(){super(),this._disposed=!1,this._refCount=0,this._usedForHls=!1,this._refFinalizationRegistry=null,this._sizePromise=null,this.onread=null,"undefined"!==typeof FinalizationRegistry&&(this._refFinalizationRegistry=new FinalizationRegistry(e=>{e._decrementRefCount()}))}getSizeOrNull(){return y(this,null,function*(){var e;if(this._disposed)throw new Do;return null!=(e=this._sizePromise)?e:this._sizePromise=(()=>y(this,null,function*(){let e=this._getFileSize();return void 0!==e||(yield this._read(0,1,0,ks),e=this._getFileSize(),I(void 0!==e)),e}))()})}getSize(){return y(this,null,function*(){if(this._disposed)throw new Do;const e=yield this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e})}slice(e,t){if(!Number.isInteger(e)||e<0)throw new TypeError("offset must be a non-negative integer.");if(void 0!==t&&(!Number.isInteger(t)||t<0))throw new TypeError("length, when provided, must be a non-negative integer.");return new Ds(this,e,t)}_dispatchRead(e,t){var i;null==(i=this.onread)||i.call(this,e,t),this._emit("read",{start:e,end:t})}ref(){return new bs(this)}_incrementRefCount(){this._refCount++}_decrementRefCount(){this._refCount--,0===this._refCount&&(this._dispose(),this._disposed=!0)}}class bs{constructor(e){var t;if(this._freed=!1,e._disposed)throw new Error("Cannot ref a disposed source.");e._incrementRefCount(),null==(t=e._refFinalizationRegistry)||t.register(this,e,this),this._source=e}get source(){if(!this._source)throw new Error("Can't get source; ref has already been freed.");return this._source}get freed(){return this._freed}free(){var e;if(this._freed)throw new Error("Illegal operation: double free on SourceRef.");const t=this.source;I(t._refCount>0),t._decrementRefCount(),null==(e=t._refFinalizationRegistry)||e.unregister(this),this._freed=!0,this._source=null}[Symbol.dispose](){this.freed||this.free()}}class Ts extends ys{constructor(e,t){if("string"!==typeof e)throw new TypeError("rootPath must be a string.");if("function"!==typeof t)throw new TypeError("requestHandler must be a function.");super(),this.rootPath=e,this.requestHandler=t}_resolveRequest(e){const t=this.requestHandler(e),i=e=>{var t;if(!(e instanceof ys||e instanceof bs))throw new TypeError("requestHandler must return or resolve to a Source or SourceRef.");const i=e instanceof ys?e.ref():e;return(t=i.source)._usedForHls||(t._usedForHls=this._usedForHls),i};return Ce(t)?t.then(i):i(t)}}const vs=(e,t)=>e.path===t.path;class Ss extends Ts{constructor(){super(...arguments),this._root=null,this._rootRequest=null}_read(e,t,i,r){if(!this._root){if(!this._rootRequest){const e=this._resolveRequest({path:this.rootPath,isRoot:!0}),t=e=>{const t=e instanceof ys?e.ref():e;return this._root=t,this._rootRequest=null,t};Ce(e)?this._rootRequest=e.then(t):(t(e),I(this._root))}if(this._rootRequest)return this._rootRequest.then(n=>n.source._read(e,t,i,r))}return this._root.source._read(e,t,i,r)}_getFileSize(){if(this._root)return this._root.source._getFileSize()}_dispose(){this._root?this._root.free():this._rootRequest&&this._rootRequest.then(e=>e.free())}}const ws="undefined"!==typeof FinalizationRegistry?new FinalizationRegistry(e=>{e.cancel().catch(()=>{})}):null;class Ps extends ys{constructor(e,t={}){var i;if(!(e instanceof Blob))throw new TypeError("blob must be a Blob.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.maxCacheSize&&(!Fe(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.useStreamReader&&"boolean"!==typeof t.useStreamReader)throw new TypeError("options.useStreamReader, when provided, must be a boolean.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(),this._readers=new WeakMap,this._blob=e,this._options=t,this._orchestrator=new As({maxCacheSize:null!=(i=t.maxCacheSize)?i:8*u(2,20),maxWorkerCount:4,runWorker:this._runWorker.bind(this),onIdleWorkerRemoved:e=>{const t=this._readers.get(e);t&&(this._readers.delete(e),null==ws||ws.unregister(e),t.cancel().catch(()=>{}))},prefetchProfile:Fs.fileSystem,handleUnhandledError:t.handleUnhandledError}),this._orchestrator.fileSize=e.size}_getFileSize(){return this._orchestrator.fileSize}_read(e,t,i,r){return this._orchestrator.read(e,t,i,r)}_runWorker(e){return y(this,null,function*(){I(e.strictTarget);let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!Te()&&!1!==this._options.useStreamReader){t=this._blob.slice(e.currentPos).stream().getReader(),null==ws||ws.register(e,t,e)}else t=null;this._readers.set(e,t)}for(;e.currentPos{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))&&"undefined"!==typeof window){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(i instanceof Request?i.url:i,window.location.href).origin)}catch(r){}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return We._warn("Request will not be retried because a CORS error was suspected due to different origins. 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The used fetch function must provide the response body as a ReadableStream.");if(206!==n.status){if(this._sequentialBacking)return void n.body.cancel();if(!this._usedForHls){const e=new URL(this._url instanceof Request?this._url.url:this._url,"undefined"!==typeof window?window.location.href:void 0);"null"===e.origin||e.pathname.endsWith(".m3u8")||e.pathname.endsWith(".m3u")||Cs.has(e.origin)||(We._warn(`HTTP server (origin ${e.origin}) did not respond to a range request with 206 Partial Content, meaning the resource will now be streamed sequentially, with old data being evicted from the cache. Reads into evicted regions will throw. To enable efficient media file streaming across a network, please make sure your server supports range requests. 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null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const i=G(this._cache,e,e=>e.start),r=-1!==i?this._cache[i]:null;if(r&&r.start<=e&&t<=r.end)return{bytes:r.bytes,view:r.view,offset:r.start};let n=e;const s=new Uint8Array(t-e);if(-1!==i)for(let c=i;c=t)break;const r=Math.max(e,i.start);r>n&&this._throwDueToCacheMiss();const a=Math.min(t,i.end);rn&&this._throwDueToCacheMiss();const{promise:a,resolve:o,reject:l}=Y();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:l}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0;else{if(!this._handleUnhandledError)throw e;this._handleUnhandledError(e)}})),a}_throwDueToCacheMiss(){throw new Error(this._cacheMissErrorMessage)}_pull(){return 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As{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1,this.queuedReads=[]}read(e,t,i,r){var n;I(!this.disposed);const s=this.options.prefetchProfile(e,t,this.workers),a=Math.max(s.start,i),o=Math.min(s.end,null!=(n=this.fileSize)?n:1/0,r);I(a<=e&&t<=o);let l=null;const c=G(this.cache,e,e=>e.start),u=-1!==c?this.cache[c]:null;u&&u.start<=e&&t<=u.end&&(u.age=this.nextAge++,l={bytes:u.bytes,view:u.view,offset:u.start});const d=G(this.cache,a,e=>e.start),h=l?null:new Uint8Array(t-e);let f=0,m=a;const p=[];if(-1!==d){for(let i=d;i=o)break;if(r.end<=a)continue;const n=Math.max(a,r.start),s=Math.min(o,r.end);if(I(n<=s),m=h.length&&(l={bytes:h,view:F(h),offset:e}),0===p.length)return I(l),l;const{promise:g,resolve:k,reject:y}=Y(),b=[];for(const v of p){const i=Math.max(e,v.start),r=Math.min(t,v.end);i===v.start&&r===v.end?b.push(v):ie.hole.start),i=-1!==t?this.queuedReads[t]:null;for(i&&v.start<=i.hole.end?(i.hole.end=Math.max(i.hole.end,v.end),i.strictTarget&&(i.strictTarget=e),T&&i.pendingSlices.push(T)):(t++,i={hole:{start:v.start,end:v.end},strictTarget:e,pendingSlices:T?[T]:[],age:this.nextAge++},this.queuedReads.splice(t,0,i));t+1i.hole.end)break;i.hole.end=Math.max(i.hole.end,e.hole.end),i.pendingSlices.push(...e.pendingSlices),i.strictTarget&&(i.strictTarget=e.strictTarget),i.age=Math.min(i.age,e.age),this.queuedReads.splice(t+1,1)}}}return l?g.catch(e=>{if(!this.disposed){if(!this.options.handleUnhandledError)throw e;this.options.handleUnhandledError(e)}}):(I(h),l=g.then(t=>t&&{bytes:t,view:F(t),offset:e})),l}checkHoleAgainstWorker(e,t,i){const r=u(2,17);if(Ee(t.start-r,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end);for(let t=0;t=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i{if(e.running=!1,e.pendingSlices.length>0)e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0;else if(!e.aborted&&!this.disposed){if(!this.options.handleUnhandledError)throw t;this.options.handleUnhandledError(t)}}).finally(()=>{if(!e.running&&this.queuedReads.length>0){let e=0;for(let r=1;re.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;at.start&&(t.start=s),t.end<=t.start&&(i.holes.splice(e,1),e--)}0===i.holes.length&&(i.resolve(i.bytes),e.pendingSlices.splice(a,1),a--)}for(let a=0;ae){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t=e){for(const e of i.pendingSlices)e.resolve(null);this.queuedReads.splice(t,1),t--}else if(i.hole.end>e){i.hole.end=e,i.strictTarget=!0;for(let t=0;t=e&&(r.resolve(null),i.pendingSlices.splice(t,1),t--)}}}}signalWorkerStoppedRunning(e){e.running=!1,e.aborted||(e.pendingSlices.length=0)}onWorkerFinished(e){var t,i;const r=this.workers.indexOf(e);I(-1!==r),e.running=!1,this.workers.splice(r,1),null==(i=(t=this.options).onIdleWorkerRemoved)||i.call(t,e),null===this.fileSize&&this.supplyFileSize(e.currentPos);for(const n of e.pendingSlices)n.resolve(null)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=G(this.cache,e.start,e=>e.start)+1;if(t>0){const i=this.cache[t-1];if(i.end>=e.end)return;if(i.end>e.start){const r=new Uint8Array(e.end-i.start);r.set(i.bytes,0),r.set(e.bytes,e.start-i.start),this.currentCacheSize+=e.end-i.end,i.bytes=r,i.view=F(r),i.end=e.end,t--,e=i}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let i=t+1;i=t.end){this.cache.splice(i,1),this.currentCacheSize-=t.bytes.length,i--;continue}const r=new Uint8Array(t.end-e.start);r.set(e.bytes,0),r.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=r,e.view=F(r),e.end=t.end,this.cache.splice(i,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let i=1;ithis._length)return null;const n=this._baseSource._read(this._offset+e,this._offset+t,this._offset+i,this._offset+r),s=e=>e?(e.offset-=this._offset,e):null;return Ce(n)?n.then(s):s(n)}_dispose(){var e;null==(e=this._ref)||e.free()}ref(){return null!=this._ref||(this._ref=this._baseSource.ref()),super.ref()}}var Ms=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,n;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(n=r)}if("function"!==typeof r)throw new TypeError("Object 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hs(e.slice(11)),i=t.get("uri");if(!i)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");const r=t.get("byterange");let a=null;if(null!==r&&(a=E(r)),a&&null===a.offset)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!B){const e={path:Ae(this.rootPath,i),offset:null!=(n=null==a?void 0:a.offset)?n:0,length:null!=(s=null==a?void 0:a.length)?s:null};if("AES-128"===(null==k?void 0:k.method)&&!k.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");T={timestamp:m,unixEpochTimestamp:p,firstSegment:null,sequenceNumber:null,location:e,duration:0,encryption:k,initSegment:null,lastProgramDateTimeSeconds:w}}g=null,null===S?v=null:S=null}else if(e.startsWith(ss)){const t=new hs(e.slice(11)),i=t.get("method");if("NONE"===i)k=null;else if("AES-128"===i){const e=t.get("uri");if(!e)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let i=null;const r=t.get("iv");if(r){if(!Os.test(r))throw new Error(`Unsupported IV format '${r}'.`);let e=r.slice(2);e=e.padStart(32,"0"),i=new Uint8Array(Xi);for(let t=0;t=8&&112===i[4]&&115===i[5]&&115===i[6]&&104===i[7]){const e=F(i).getUint32(0);r=zi(i.subarray(8,Math.min(e,i.length)))}}k={method:i,psshBox:r}}}}else if(e.startsWith(as)){const t=e.slice(22),i=Number(t);if(!Number.isInteger(i)||i<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${t}'.`);_(i)}else if(e.startsWith(os)){const t=E(e.slice(17));if(null===t.offset){if(null===v)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");t.offset=v}S=t,v=t.offset+t.length}else if(e.startsWith(ls)){if(B)continue;const t=e.slice(25),i=Date.parse(t);if(!Number.isFinite(i))continue;const r=i/1e3;if(w===r)continue;if(null===w&&this.segments.length>0){const e=C(this.segments),t=r-(e.timestamp+e.duration);for(const i of this.segments)i.unixEpochTimestamp=i.timestamp+t,c&&(i.timestamp=i.unixEpochTimestamp)}w=r,p=r,c&&(m=r)}else if("#EXT-X-DISCONTINUITY"===e)b=null;else if(e.startsWith(cs)){const t=e.slice(22),i=Number(t);if(!Number.isFinite(i)||i<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${t}'.`);this.refreshInterval=i,P=i}else{if("#EXT-X-ENDLIST"===e){this.streamHasEnded=!0;break}if(e.startsWith(us)){"vod"===e.slice(21).toLowerCase()&&(this.streamHasEnded=!0)}}}else{if("#EXTM3U"!==e)throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");d=!0}}if(!d)throw new Error("Invalid M3U8 file; no #EXTM3U header.")})}getFirstSegment(){return y(this,null,function*(){var e;return 0===this.segments.length&&(yield this.runUpdateSegments()),null!=(e=this.segments[0])?e:null})}getSegmentAt(e,t){return y(this,null,function*(){0===this.segments.length&&(yield this.runUpdateSegments());let i=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){const r=G(this.segments,e,e=>e.timestamp);if(-1===r)return null;if(r0;for(;;){if(re.segment===r);if(n)return n.age=this.nextInputCacheAge++,n.input;let s=null;(r.initSegment||r.firstSegment)&&(s=this.getInputForSegment(null!=(t=r.initSegment)?t:r.firstSegment));const a=f(h({},this.input._formatOptions),{isobmff:f(h({},this.input._formatOptions.isobmff),{resolveKeyId:(null==(i=this.input._formatOptions.isobmff)?void 0:i.resolveKeyId)&&(e=>{if(!r.encryption||"SAMPLE-AES"!==r.encryption.method&&"SAMPLE-AES-CTR"!==r.encryption.method||!r.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(e);let t=e.psshBoxes;const{psshBox:i}=r.encryption;return null!==i.keyIds&&!i.keyIds.includes(e.keyId)||t.some(e=>Ui(e,i))||(t=[...t,i]),this.input._formatOptions.isobmff.resolveKeyId(f(h({},e),{psshBoxes:t}))})})}),o=new Fo({source:new Ss(r.location.path,e=>y(this,null,function*(){var t,i;I(e.isRoot);const n=f(h({},e),{isRoot:!1});let s;const a=r.location.offset>0||null!==r.location.length;if(r.encryption&&"SAMPLE-AES"!==r.encryption.method&&"SAMPLE-AES-CTR"!==r.encryption.method)if("AES-128"===r.encryption.method){const e=r.encryption;I(e.iv);let t=yield this.input._getSourceCached(n);if(a){const e=t.source.slice(r.location.offset,null!=(i=r.location.length)?i:void 0).ref();t.free(),t=e}const o=((e,t,i)=>{let r=!1,n=0;const s=u(2,16),a=new ir;return new ReadableStream({pull:o=>y(null,null,function*(){r||(a.init(yield t()),r=!0);const l=s+16;let c=e.requestSliceRange(n,0,l);if(Ce(c)&&(c=yield c),!c||0===c.length)throw new Error("Invalid ciphertext.");const u=c.length;if(u%16!==0)throw new Error("Invalid ciphertext.");const d=u===l?u-16:u,h=Lo(c,d),f=new Uint8Array(d);for(let e=0;e16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");const t=f.subarray(0,d-e);o.enqueue(t),o.close(),i()}}),cancel:()=>{i()}})})(new Mo(t.source),()=>y(this,null,function*(){const t={stack:[],error:void 0,hasError:!1};try{const i=Ms(t,yield this.input._getSourceCached({path:e.keyUri,isRoot:!1},Ro),!1),r=new Mo(i.source),n=yield r.requestSlice(0,Xi);if(!n)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");return{key:Lo(n,Xi),iv:e.iv}}catch(i){t.error=i,t.hasError=!0}finally{Ns(t)}}),()=>{t.free()});s=new Rs(o).ref()}else I(!1);else if(s=yield this.input._getSourceCached(n),a){const e=s.source.slice(r.location.offset,null!=(t=r.location.length)?t:void 0).ref();s.free(),s=e}return s})),formats:this.input._formats.filter(e=>!(e instanceof sa)),initInput:null!=s?s:void 0,formatOptions:a});o._onFormatDetermined=e=>{var t,i;if(("SAMPLE-AES"===(null==(t=r.encryption)?void 0:t.method)||"SAMPLE-AES-CTR"===(null==(i=r.encryption)?void 0:i.method))&&!e._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:r,input:o,age:this.nextInputCacheAge++});if(this.inputCache.length>4){const e=Me(this.inputCache,e=>e.age);I(-1!==e),this.inputCache.splice(e,1)}return o}getLiveRefreshInterval(){return y(this,null,function*(){return 0===this.getRemainingWaitTimeMs()&&(yield this.runUpdateSegments()),this.streamHasEnded?null:this.refreshInterval})}}class Us extends Ni{constructor(e){super(e),this.metadataPromise=null,this.trackBackings=null,this.internalTracks=null,this.segmentedInputs=[],this.hasMasterPlaylist=!0}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){I(this.input._rootSource instanceof Ts);const e=yield this.input._reader.requestEntireFile();I(e);const t=tl(e,e.length,{ignore:ds}),{rootPath:i}=this.input._rootSource,r=[],n=[];for(let u=1;u"video"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],a=[...new Set(n.filter(e=>"audio"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],o=yield Promise.all(r.map((e,t)=>y(this,null,function*(){var r,o,l,c;const u=[],d=e.attributes.get("codecs");let h;if(d)h=d.split(",").map(e=>e.trim());else{const t=this.getSegmentedInputForPath(e.fullPath),i=yield t.getTrackBackings(),r=yield Promise.all(i.map(e=>y(this,null,function*(){return{track:e,codec:yield e.getCodec()}})));h=yield Promise.all(r.filter(e=>null!==e.codec).map(e=>e.track.getDecoderConfig().then(e=>e.codec)))}const f=e.attributes.get("video"),m=e.attributes.get("audio"),p=h.some(e=>ui.includes(Ii(e))),g=h.some(e=>hi.includes(Ii(e)));if(null!==f&&!p){if(!s.includes(f))throw new Error(`Invalid M3U8 file; variant stream references video group "${f}" which is not defined in any #EXT-X-MEDIA tags.`);const e=n.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===f&&"video"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Ae(i,t),n=this.getSegmentedInputForPath(r),s=(yield n.getTrackBackings()).find(e=>"video"===e.getType());if(!s||null===(yield s.getCodec()))break e;const a=yield s.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null});I(null!==a),h.push(a)}}if(null!==m&&!g){if(!a.includes(m))throw new Error(`Invalid M3U8 file; variant stream references audio group "${m}" which is not defined in any #EXT-X-MEDIA tags.`);const e=n.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===m&&"audio"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Ae(i,t),n=this.getSegmentedInputForPath(r),s=(yield n.getTrackBackings()).find(e=>"audio"===e.getType());if(!s||null===(yield s.getCodec()))break e;const a=yield s.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null});I(null!==a),h.push(a)}}h=[...new Set(h)];let k=null,b=null;const T=e.attributes.getAsNumber("bandwidth");I(null!==T);const v=e.attributes.getAsNumber("average-bandwidth"),S=e.attributes.get("name");for(const i of h){const d=Ii(i);if(null!==d)if(ui.includes(d)){if(null!==k)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");k=i;const a=e.attributes.get("video");if(null===a){const i=e.attributes.get("resolution");let r=null,n=null;if(i){const e=i.match(/^(\d+)x(\d+)$/);e&&(r=Number(e[1]),n=Number(e[2]))}u.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:ae,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:k,pairingMask:BigInt("1")<0?r:null}})}else{if(!a.includes(r))throw new Error(`Invalid M3U8 file; variant stream references audio group "${r}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of n){const n=i.attributes.get("group-id"),s=i.attributes.get("type");if(n!==r||"audio"!==s.toLowerCase())continue;const a=null!=(l=i.attributes.get("channels"))?l:e.attributes.get("channels"),o=null!==a?Number(a.split("/")[0]):null;u.push({id:-1,demuxer:this,backingTrack:null,default:Vs(i.attributes),autoselect:Vs(i.attributes)||js(i.attributes),languageCode:Ks(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:null!=(c=i.fullPath)?c:e.fullPath,fullCodecString:b,pairingMask:BigInt("1")<0?o:null}})}}}}return u}))),l=[],c=e=>{var t,i;const r=l.find(t=>t.fullPath===e.fullPath&&t.info.type===e.info.type);r?(r.pairingMask|=e.pairingMask,r.default||(r.default=e.default),r.autoselect||(r.autoselect=e.autoselect),r.lineNumber=Math.min(r.lineNumber,e.lineNumber),null!==e.peakBitrate&&(r.peakBitrate=Math.max(null!=(t=r.peakBitrate)?t:-1/0,e.peakBitrate)),null!==e.averageBitrate&&(r.averageBitrate=Math.max(null!=(i=r.averageBitrate)?i:-1/0,e.averageBitrate)),r.languageCode===ae&&(r.languageCode=e.languageCode)):(e.id=l.length+1,l.push(e))};for(const u of o)for(const e of u)c(e);l.sort((e,t)=>e.lineNumber-t.lineNumber),this.trackBackings=[];for(const u of l)"video"===u.info.type?this.trackBackings.push(new Ws(u)):this.trackBackings.push(new Hs(u));this.internalTracks=l}))()}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),I(this.trackBackings),this.trackBackings})}getSegmentedInputForPath(e){let t=this.segmentedInputs.find(t=>t.path===e);if(t)return t;let i=null;if(this.internalTracks){i=this.internalTracks.filter(t=>t.fullPath===e).map(e=>({id:e.id,type:e.info.type}))}return t=new zs(this,e,i,null),this.segmentedInputs.push(t),t}getMetadataTags(){return y(this,null,function*(){return{}})}getMimeType(){return y(this,null,function*(){return Zn})}dispose(){if(this.segmentedInputs){for(const e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}}class qs{constructor(e){this.internalTrack=e,this.hydrationPromise=null}hydrate(){var e;return null!=(e=this.hydrationPromise)?e:this.hydrationPromise=(()=>y(this,null,function*(){const e=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath);let t=null;const i=(yield e.getTrackBackings()).filter(e=>e.getType()===this.getType());if(1===i.length)t=i[0];else if(this instanceof Ws){for(const r of i)if((yield r.getCodec())===this.getCodec()){t=r;break}}else{I(this instanceof Hs);for(const e of i)if((yield e.getCodec())===this.getCodec()){t=e;break}}if(!t)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=t}))()}delegate(e){return this.internalTrack.backingTrack?e():this.hydrate().then(e)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return f(h({},je),{default:this.internalTrack.autoselect,primary:this.internalTrack.default})}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){I(this.internalTrack.demuxer.internalTracks);const e=this.internalTrack.info.type;let t=0;for(const i of this.internalTrack.demuxer.internalTracks)if(i.info.type===e&&t++,i===this.internalTrack)break;return t}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getUnixTimeForTimestamp(e){return this.delegate(()=>this.internalTrack.backingTrack.getUnixTimeForTimestamp(e))}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}getDurationFromMetadata(e){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(e)})}getLiveRefreshInterval(){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()})}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}getFirstPacket(e){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(e)})}getPacket(e,t){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getPacket(e,t)})}getKeyPacket(e,t){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(e,t)})}getNextPacket(e,t){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getNextPacket(e,t)})}getNextKeyPacket(e,t){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(e,t)})}}class Ws extends qs{constructor(e){super(e)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return Ii(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}getColorSpace(){return y(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.getColorSpace()})}canBeTransparent(){return y(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.canBeTransparent()})}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}getDecoderConfig(){return y(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.getDecoderConfig()})}}class Hs extends qs{constructor(e){super(e)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return Ii(this.internalTrack.fullCodecString)}getNumberOfChannels(){return null!==this.internalTrack.info.numberOfChannels?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}getDecoderConfig(){return y(this,null,function*(){return yield this.hydrate(),this.backingAudioTrack.getDecoderConfig()})}}const Vs=e=>{const t=e.get("default");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},js=e=>{const t=e.get("autoselect");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},Ks=e=>{if(null===e)return ae;const t=e.split("-")[0];return t||ae};class Xs{constructor(){this._isIsobmff=!1}}class $s extends Xs{constructor(){super(...arguments),this._isIsobmff=!0}_getMajorBrand(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,12);if(Ce(t)&&(t=yield t),!t)return null;t.skip(4);const i=el(t,4);return"ftyp"!==i&&"styp"!==i?null:el(t,4)})}_createDemuxer(e){return new rr(e)}}class Gs extends $s{_canReadInput(e){return y(this,null,function*(){const t=yield this._getMajorBrand(e);if(null!==t)return"qt "!==t;let i=0;for(let r=0;r<10;r++){let t=e._reader.requestSlice(i,8);if(Ce(t)&&(t=yield t),!t)return!1;let r=jo(t),n=8;if(1===r){let t=e._reader.requestSlice(i+8,8);if(Ce(t)&&(t=yield t),!t)return!1;r=Go(t),n=16}if(r8)return!1;if(Er(i,r)!==vr.EBML)return!1;const n=Rr(i);if("number"!==typeof n)return!1;let s=e._reader.requestSlice(i.filePos,n);if(Ce(s)&&(s=yield s),!s)return!1;const a=i.filePos;for(;s.filePos<=a+n-2;){const e=Fr(s);if(!e)break;const{id:i,size:r}=e,n=s.filePos;if(void 0===r)return!1;switch(i){case vr.EBMLVersion:if(1!==Er(s,r))return!1;break;case vr.EBMLReadVersion:if(1!==Er(s,r))return!1;break;case vr.DocType:if(Ar(s,r)!==t)return!1;break;case vr.DocTypeVersion:if(Er(s,r)>4)return!1}s.filePos=n+r}return!0})}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new ln(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class Js extends Ys{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class Zs extends Xs{_canReadInput(e){return y(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,ol);if(Ce(i)&&(i=yield i),!i)break;const r=dl(i);if(!r)break;t=i.filePos+r.size}const i=yield hn(e._reader,t,t+4096);if(!i)return!1;const r=i.header,n=_i(r.mpegVersionId,r.channel);let s=e._reader.requestSlice(i.startPos+n,4);if(Ce(s)&&(s=yield s),!s)return!1;const a=jo(s);if(a===Bi||a===Ei)return!0;t=i.startPos+i.header.totalSize;const o=yield hn(e._reader,t,t+4);if(!o)return!1;const l=o.header;return r.channel===l.channel&&r.sampleRate===l.sampleRate})}_createDemuxer(e){return new fn(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class ea extends Xs{_canReadInput(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,12);if(Ce(t)&&(t=yield t),!t)return!1;const i=el(t,4);if("RIFF"!==i&&"RIFX"!==i&&"RF64"!==i)return!1;t.skip(4);return"WAVE"===el(t,4)})}_createDemuxer(e){return new En(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class ta extends Xs{_canReadInput(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,4);return Ce(t)&&(t=yield t),!!t&&"OggS"===el(t,4)})}_createDemuxer(e){return new wn(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class ia extends Xs{_canReadInput(e){return y(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,ol);if(Ce(i)&&(i=yield i),!i)break;const r=dl(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSlice(t,4);return Ce(i)&&(i=yield i),!!i&&"fLaC"===el(i,4)})}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new Nn(e)}}class ra extends Xs{_canReadInput(e){return y(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,ol);if(Ce(i)&&(i=yield i),!i)break;const r=dl(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSliceRange(t,7,9);if(Ce(i)&&(i=yield i),!i)return!1;const r=Fn(i);if(!r)return!1;if(t+=r.frameLength,i=e._reader.requestSliceRange(t,7,9),Ce(i)&&(i=yield i),!i)return!1;const n=Fn(i);return!!n&&(r.objectType===n.objectType&&r.samplingFrequencyIndex===n.samplingFrequencyIndex&&r.channelConfiguration===n.channelConfiguration)})}_createDemuxer(e){return new Dn(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}class na extends Xs{_canReadInput(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,205);if(Ce(t)&&(t=yield t),!t)return!1;const i=Lo(t,205);return 71===i[0]&&71===i[188]||(71===i[0]&&71===i[204]||71===i[4]&&71===i[196])})}_createDemuxer(e){return new Vn(e)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}}class sa extends Xs{_canReadInput(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,7);if(Ce(t)&&(t=yield t),!t)return!1;if(!("#EXTM3U"===el(t,7)))return!1;if(!(e._rootSource instanceof Ts))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return e._rootSource._usedForHls=!0,!0})}_createDemuxer(e){return new Us(e)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return Zn}}const aa=new Gs,oa=new Qs,la=new Ys,ca=new Js,ua=new Zs,da=new ea,ha=new ta,fa=new ra,ma=new ia,pa=new na,ga=new sa,ka=[ga,aa,oa,la,ca,da,ha,ma,ua,fa,pa],ya=[ga,aa,oa,ua,fa,pa];var ba=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,n=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===n)return n=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return n|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else n|=1}catch(a){i(a)}if(1===n)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});Re();let Ta=-1/0,va=-1/0,Sa=null;"undefined"!==typeof FinalizationRegistry&&(Sa=new FinalizationRegistry(e=>{const t=performance.now();"video"===e.type?(t-Ta>=1e3&&(We._error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),Ta=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-va>=1e3&&(We._error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),va=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));class wa{constructor(){this._referenceCount=0,this._lastAllocationBuffer=null}}const Pa=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],Ia=new Set(Pa);class xa{get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(me*this.timestamp)}get microsecondDuration(){return Math.trunc(me*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){var i,r,n,s,a,o,l,c,u,d,h,f,m,p,g,k,y,b,T,v,S,w,P,I,x,C,B,E,_,F,A;if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0===t.format||!Ia.has(t.format))throw new TypeError("init.format must be one of: "+Pa.join(", "));if(!Number.isInteger(t.codedWidth)||t.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(t.codedHeight)||t.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.layout){if(!Array.isArray(t.layout))throw new TypeError("init.layout, when provided, must be an array.");for(const e of t.layout){if(!e||"object"!==typeof e||Array.isArray(e))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(e.offset)||e.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(e.stride)||e.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==t.visibleRect&&Oe(t.visibleRect,"init.visibleRect"),void 0!==t.displayWidth&&(!Number.isInteger(t.displayWidth)||t.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(void 0!==t.displayHeight&&(!Number.isInteger(t.displayHeight)||t.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(void 0!==t.displayWidth!==(void 0!==t.displayHeight))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this.format=t.format,this.rotation=null!=(i=t.rotation)?i:0,this.timestamp=t.timestamp,this.duration=null!=(r=t.duration)?r:0;const m=null!=(n=t.layout)?n:Na(t.format,t.codedWidth,t.codedHeight);let p=null!=(s=t.colorSpace)?s:null;null===p&&(p="RGBA"===this.format||"RGBX"===this.format||"BGRA"===this.format||"BGRX"===this.format?{primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:{primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.visibleRect={left:null!=(o=null==(a=t.visibleRect)?void 0:a.left)?o:0,top:null!=(c=null==(l=t.visibleRect)?void 0:l.top)?c:0,width:null!=(d=null==(u=t.visibleRect)?void 0:u.width)?d:t.codedWidth,height:null!=(f=null==(h=t.visibleRect)?void 0:h.height)?f:t.codedHeight},void 0!==t.displayWidth?(this.squarePixelWidth=this.rotation%180===0?t.displayWidth:t.displayHeight,this.squarePixelHeight=this.rotation%180===0?t.displayHeight:t.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height),this._data=t._doNotCopy?R(e):R(e).slice(),this._layout=m,this.colorSpace=new Ra(p)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==(null==t?void 0:t.rotation)&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==(null==t?void 0:t.timestamp)&&!Number.isFinite(null==t?void 0:t.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==(null==t?void 0:t.duration)&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");void 0!==(null==t?void 0:t.visibleRect)&&Oe(t.visibleRect,"init.visibleRect"),this._data=e,this._layout=null,this.format=e.format,this.visibleRect={left:null!=(p=null==(m=e.visibleRect)?void 0:m.x)?p:0,top:null!=(k=null==(g=e.visibleRect)?void 0:g.y)?k:0,width:null!=(b=null==(y=e.visibleRect)?void 0:y.width)?b:e.codedWidth,height:null!=(v=null==(T=e.visibleRect)?void 0:T.height)?v:e.codedHeight},this.rotation=null!=(S=null==t?void 0:t.rotation)?S:0,this.squarePixelWidth=e.displayWidth,this.squarePixelHeight=e.displayHeight,this.timestamp=null!=(w=null==t?void 0:t.timestamp)?w:e.timestamp/1e6,this.duration=null!=(I=null==t?void 0:t.duration)?I:(null!=(P=e.duration)?P:0)/1e6,this.colorSpace=new Ra(e.colorSpace)}else if("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.visibleRect&&Oe(t.visibleRect,"init.visibleRect"),"undefined"!==typeof VideoFrame)return new xa(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*me),duration:Math.trunc((null!=(x=t.duration)?x:0)*me)||void 0,visibleRect:t.visibleRect&&{x:t.visibleRect.left,y:t.visibleRect.top,width:t.visibleRect.width,height:t.visibleRect.height}}),t);let i=0,r=0;if("naturalWidth"in e?(i=e.naturalWidth,r=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,r=e.videoHeight):"width"in e&&(i=Number(e.width),r=Number(e.height)),!i||!r)throw new TypeError("Could not determine dimensions.");const n=null!=(C=t.visibleRect)?C:{left:0,top:0,width:i,height:r},s=new OffscreenCanvas(n.width,n.height),a=s.getContext("2d",{alpha:Se(),willReadFrequently:!0});if(!a)throw new Error("OffscreenCanvas must have support for the '2d' context in order to create a VideoSample from this data.");a.drawImage(e,-n.left,-n.top),this._data=s,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:n.width,height:n.height},this.squarePixelWidth=n.width,this.squarePixelHeight=n.height,this.rotation=null!=(B=t.rotation)?B:0,this.timestamp=t.timestamp,this.duration=null!=(E=t.duration)?E:0,this.colorSpace=new Ra({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else{if(!(e instanceof wa))throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(this._data=e,e._referenceCount++,this.format=e.getFormat(),null!==this.format&&!Pa.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:e.getCodedWidth(),height:e.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=e.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=e.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=null!=(_=t.rotation)?_:0,this.timestamp=t.timestamp,this.duration=null!=(F=t.duration)?F:0,this.colorSpace=e.getColorSpace()}this.encodeOptions=null!=(A=null==t?void 0:t.encodeOptions)?A:{},this.pixelAspectRatio=Ne({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),null==Sa||Sa.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return I(null!==this._data),this._data instanceof wa?new xa(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):Fa(this._data)?new xa(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):this._data instanceof Uint8Array?(I(this._layout),new xa(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions,_doNotCopy:!0})):new xa(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions})}close(){this._closed||(null==Sa||Sa.unregister(this),this._data instanceof wa?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Fa(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){var t;if(Ma(e),this._closed)throw new Error("VideoSample is closed.");if(null==(null!=(t=e.format)?t:this.format))throw new Error("Cannot get allocation size when format is null.");if(Fa(this._data))return this._data.allocationSize(e);return La(this,e).allocationSize}copyTo(e){return y(this,arguments,function*(e,t={}){var i,r;if(!H(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(Ma(t),this._closed)throw new Error("VideoSample is closed.");if(null==(null!=(i=t.format)?i:this.format))throw new Error("Cannot copy video sample data when format is null.");if(I(null!==this._data),Fa(this._data))return this._data.copyTo(e,t);if(t.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(t.format)){if(!(this._data instanceof wa)){if("undefined"===typeof VideoFrame)throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");const i=this.toVideoFrame(),r=yield i.copyTo(e,t);return i.close(),r}{const i={stack:[],error:void 0,hasError:!1};try{const n=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,n;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(n=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");n&&(r=function(){try{n.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t}(i,yield this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},null!=(r=t.colorSpace)?r:"srgb"),!1);if(!(n instanceof xa))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(n.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${n.format}' instead.`);return yield n.copyTo(e,t)}catch(u){i.error=u,i.hasError=!0}finally{ba(i)}}}const n=La(this,t);I(this.format);const s=R(e);if(s.byteLength!(e.data instanceof Uint8Array)||!Number.isInteger(e.stride)||e.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');o=e}else if(this._data instanceof Uint8Array)I(this._layout),I(this._layout.length===a.length),o=this._layout.map((e,t)=>{const i=Math.ceil(this.codedHeight/a[t].heightDivisor);return{data:this._data.subarray(e.offset,e.offset+e.stride*i),stride:e.stride}});else{const e=this._data.getContext("2d");I(e);const t=e.getImageData(0,0,this.codedWidth,this.codedHeight);o=[{data:R(t.data),stride:4*this.codedWidth}]}const l=[],c=a.length;for(let d=0;di.byteLength)throw new Error("Source buffer OOB read.");if(a+c>s.byteLength)throw new Error("Destination buffer OOB write.");const n=i.subarray(r,r+c);s.set(n,a),r+=t,a+=e.destinationStride}l.push(u)}if(void 0!==t.format){const e=this.format.startsWith("RGB")!==t.format.startsWith("RGB"),i=this.format.includes("X")&&t.format.includes("A");if(e||i)for(let t=0;te+t.data.byteLength,0),i=new Uint8Array(t);let r=0;const n=[];for(const s of e)i.set(s.data,r),n.push(r),r+=s.data.byteLength;return new VideoFrame(i,{format:this.format,layout:e.map((e,t)=>({offset:n[t],stride:e.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}return Fa(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?(I(this._layout),new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,layout:this._layout,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,i,r,n,s,a,o,l){let c=0,u=0,d=this.displayWidth,h=this.displayHeight,f=0,m=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(c=t,u=i,d=r,h=n,f=s,m=a,void 0!==o?(p=o,g=l):(p=d,g=h)):(f=t,m=i,void 0!==r&&(p=r,g=n)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(c))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(f))throw new TypeError("dx must be a number.");if(!Number.isFinite(m))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:c,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(c,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const y=f+p/2,b=m+g/2;e.translate(y,b),e.rotate(this.rotation*Math.PI/180);const T=this.rotation%180===0?1:p/g;e.scale(1/T,T),e.drawImage(k,c,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){var i,r,n,s,a,o,l,c,u;if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&Da(t.crop,"options.");const d=e.canvas.width,h=e.canvas.height,f=null!=(i=t.rotation)?i:this.rotation,[m,p]=f%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let g,k,y,b,T=t.crop;T&&(T=Aa(T,m,p));const{sx:v,sy:S,sWidth:w,sHeight:P}=this._rotateSourceRegion(null!=(n=null==(r=t.crop)?void 0:r.left)?n:0,null!=(a=null==(s=t.crop)?void 0:s.top)?a:0,null!=(l=null==(o=t.crop)?void 0:o.width)?l:m,null!=(u=null==(c=t.crop)?void 0:c.height)?u:p,f);if("fill"===t.fit)g=0,k=0,y=d,b=h;else{const[e,i]=t.crop?[t.crop.width,t.crop.height]:[m,p],r="contain"===t.fit?Math.min(d/e,h/i):Math.max(d/e,h/i);y=e*r,b=i*r,g=(d-y)/2,k=(h-b)/2}e.save();const I=f%180===0?1:y/b;e.translate(d/2,h/2),e.rotate(f*Math.PI/180),e.scale(1/I,I),e.translate(-d/2,-h/2),e.drawImage(this.toCanvasImageSource(),v,S,w,P,g,k,y,b),e.restore()}_rotateSourceRegion(e,t,i,r,n){return 90===n?[e,t,i,r]=[t,this.squarePixelHeight-e-i,r,i]:180===n?[e,t]=[this.squarePixelWidth-e-i,this.squarePixelHeight-t-r]:270===n&&([e,t,i,r]=[this.squarePixelWidth-t-r,e,r,i]),{sx:e,sy:t,sWidth:i,sHeight:r}}_drawWithFitAndMipmapping(e,t,i){const r=e.width,n=e.height,[s,a]=i.rotation%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],o=i.crop?i.crop.width:s,l=i.crop?i.crop.height:a;let c=0;2*r0?_a(d,h):{canvas:e,context:t,isNew:i.targetIsFresh};m.imageSmoothingQuality="high",i.fillBlack?(m.fillStyle="black",m.fillRect(0,0,d,h)):p||m.clearRect(0,0,d,h),this.drawWithFit(m,{fit:i.fit,rotation:i.rotation,crop:i.crop}),m.globalCompositeOperation="copy";for(let g=c;g>1;g--){const e=r*u(2,g),t=n*u(2,g);m.drawImage(f,0,0,e,t,0,0,e/2,t/2)}m.globalCompositeOperation="source-over",c>0&&(t.imageSmoothingQuality="high",t.globalCompositeOperation="copy",t.drawImage(f,0,0,2*r,2*n,0,0,r,n),t.globalCompositeOperation="source-over")}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(I(null!==this._data),this._data instanceof wa||this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}transform(e){return y(this,null,function*(){var t,i,r,n,s;if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.width&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(void 0!==e.height&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(void 0!==e.roundDimensionsTo&&(!Number.isInteger(e.roundDimensionsTo)||e.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(void 0!==e.fit&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==e.width&&void 0!==e.height&&void 0===e.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==e.rotate&&![0,90,180,270].includes(e.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(void 0!==e.crop&&Da(e.crop,"options."),void 0!==e.alpha&&!["keep","discard"].includes(e.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");const a=x(this.rotation+(null!=(t=e.rotate)?t:0)),[o,l]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let c=e.crop;c&&(c=Aa(c,o,l));const u=c?c.width:o,d=c?c.height:l,h=u/d;let f,m;void 0!==e.width&&void 0===e.height?(f=e.width,m=f/h):void 0===e.width&&void 0!==e.height?(m=e.height,f=m*h):void 0!==e.width&&void 0!==e.height?(f=e.width,m=e.height):(f=u,m=d),f=le(f,null!=(i=e.roundDimensionsTo)?i:1),m=le(m,null!=(r=e.roundDimensionsTo)?r:1);const p={width:f,height:m,fit:null!=(n=e.fit)?n:"fill",rotation:a,crop:null!=c?c:{left:0,top:0,width:o,height:l},alpha:null!=(s=e.alpha)?s:"keep"};for(const e of Ca){let t=e(this,p);if(Ce(t)&&(t=yield t),null!==t)return t}const{canvas:g,context:k,isNew:y}=_a(p.width,p.height);return this._drawWithFitAndMipmapping(g,k,{fit:p.fit,rotation:p.rotation,crop:p.crop,targetIsFresh:y,fillBlack:"discard"===p.alpha}),new xa(g,{timestamp:this.timestamp,duration:this.duration,rotation:0})})}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}setEncodeOptions(e){if(!e||"object"!==typeof e)throw new TypeError("newEncodeOptions must be an object.");this.encodeOptions=e}[Symbol.dispose](){this.close()}}const Ca=[],Ba=[];let Ea=0;const _a=(e,t)=>{for(const n of Ba)if(n.canvas.width===e&&n.canvas.height===t)return n.age=Ea++,{canvas:n.canvas,context:n.context,isNew:!1};let i;if("undefined"!==typeof OffscreenCanvas)i=new OffscreenCanvas(e,t);else{if("undefined"===typeof window||"undefined"===typeof document)throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");i=document.createElement("canvas"),i.width=e,i.height=t}const r=i.getContext("2d",{alpha:!0,willReadFrequently:!1});if(!r)throw new Error("The '2d' canvas context is required to transform VideoSamples. Register a custom transformer using registerVideoSampleTransformer to work around this limitation.");return Ba.length>=3&&Ba.splice(Me(Ba,e=>e.age),1),Ba.push({canvas:i,context:r,age:Ea++}),{canvas:i,context:r,isNew:!0}};class Ra{constructor(e){var t,i,r,n;if(void 0!==e){if(!e||"object"!==typeof e)throw new TypeError("init.colorSpace, when provided, must be an object.");const t=Object.keys(M);if(null!=e.primaries&&!t.includes(e.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${t.join(", ")}.`);const i=Object.keys(O);if(null!=e.transfer&&!i.includes(e.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${i.join(", ")}.`);const r=Object.keys(z);if(null!=e.matrix&&!r.includes(e.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${r.join(", ")}.`);if(null!=e.fullRange&&"boolean"!==typeof e.fullRange)throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}this.primaries=null!=(t=null==e?void 0:e.primaries)?t:null,this.transfer=null!=(i=null==e?void 0:e.transfer)?i:null,this.matrix=null!=(r=null==e?void 0:e.matrix)?r:null,this.fullRange=null!=(n=null==e?void 0:e.fullRange)?n:null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const Fa=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,Aa=(e,t,i)=>{const r=Math.min(e.left,t),n=Math.min(e.top,i),s=Math.min(e.width,t-r),a=Math.min(e.height,i-n);return I(s>=0),I(a>=0),{left:r,top:n,width:s,height:a}},Da=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},Ma=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},Na=(e,t,i)=>{const r=Oa(e),n=[];let s=0;for(const a of r){const e=Math.ceil(t/a.widthDivisor),r=Math.ceil(i/a.heightDivisor),o=e*a.sampleBytes,l=o*r;n.push({offset:s,stride:o}),s+=l}return n},Oa=e=>{const t=(e,t,i,r,n)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:i,heightDivisor:r},{sampleBytes:t,widthDivisor:i,heightDivisor:r}];return n&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:te(e),I(!1)}},La=(e,t)=>{const i={left:0,top:0,width:e.codedWidth,height:e.codedHeight},r=t.rect,n=za(i,r,e.codedWidth,e.codedHeight,e.format),s=t.layout;let a;if(t.format&&t.format!==e.format){if(!["RGBA","RGBX","BGRA","BGRX"].includes(t.format))throw new Error("NotSupportedError: Invalid destination format.");a=t.format}else a=e.format;return qa(n,a,s)},za=(e,t,i,r,n)=>{const s=h({},e);if(void 0!==t){if(0===t.width||0===t.height)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>i)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");s.x=t.x||0,s.y=t.y||0,s.width=t.width||0,s.height=t.height||0}if(!Ua(n,s))throw new TypeError("visibleRect alignment is invalid for the format.");return s},Ua=(e,t)=>{if(null===e)return!0;const i=Oa(e);for(let r=0;r{const r=Oa(t),n=r.length;if(void 0!==i&&i.length!==n)throw new TypeError(`Layout must have ${n} planes.`);let s=0;const a=[],o=[];for(let l=0;l4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(null==e?void 0:e.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/(ja(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let i;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)i=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");i=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const r=this.numberOfFrames*this.numberOfChannels*ja(this.format);if(i.byteLength=this.numberOfFrames)throw new RangeError("frameOffset out of range");const s=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-n;if(s>this.numberOfFrames-n)throw new RangeError("frameCount out of range");const a=ja(r),o=Ka(r);if(o&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!o&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(o?s:s*this.numberOfChannels)*a}copyTo(e,t){if(!H(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!Wa.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{format:i,frameCount:r,frameOffset:n}=t;let{planeIndex:s}=t,a=this.format;const o=null!=i?i:this.format;if(!o)throw new Error("Destination format not determined");const l=this.numberOfFrames,c=this.numberOfChannels,u=null!=n?n:0;if(u>=l)throw new RangeError("frameOffset out of range");const d=void 0!==r?r:l-u;if(d>l-u)throw new RangeError("frameCount out of range");const h=ja(o),f=Ka(o);if(f&&s>=c)throw new RangeError("planeIndex out of range");if(!f&&0!==s)throw new RangeError("planeIndex out of range");const m=(f?d:d*c)*h;if(e.byteLength2&&o!==a)return void Qa(this._data,p,a,o,c,s,u,d);try{return void this._data.copyTo(e,{planeIndex:s,frameOffset:u,frameCount:d,format:o})}catch(S){if("f32-planar"===o)throw S;a="f32-planar"}}const k=Xa(a),y=ja(a),b=Ka(a);let T;if(this._data instanceof Ha){const e=e=>{const t=this._data.getDataPlane(e);if(!(t instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");const i=l*y*(b?1:c);if(t.byteLength!==i)throw new TypeError(`Data plane ${e} has invalid size. Expected exactly ${i} bytes, got ${t.byteLength} bytes.`);return t};if(b)if(f)T=e(s),s=0;else{T=new Uint8Array(l*y*c);for(let t=0;tthis.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t0)for(let r=0;r0&&this.copyTo(n,{planeIndex:0,format:this.format,frameOffset:e,frameCount:i});return new Va({data:n,format:this.format,sampleRate:this.sampleRate,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp+e/this.sampleRate})}close(){this._closed||(null==Sa||Sa.unregister(this),this._data instanceof Ha?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Ga(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof Ha?this._createAudioDataFromData():Ga(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(Ka(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let i=0;i0;){const n=Math.min(s,o),l=new Float32Array(i*n);for(let t=0;t0;){const n=Math.min(s,o),c=new Float32Array(i*n);for(let t=0;t{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},Ka=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},Xa=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},$a=e=>{switch(e){case"u8":case"u8-planar":return(e,t,i)=>e.setUint8(t,se(127.5*(i+1),0,255));case"s16":case"s16-planar":return(e,t,i)=>e.setInt16(t,se(Math.round(32767*i),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,i)=>e.setInt32(t,se(Math.round(2147483647*i),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,i)=>e.setFloat32(t,i,!0)}},Ga=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,Qa=(e,t,i,r,n,s,a,o)=>{const l=Xa(i),c=$a(r),u=ja(i),d=ja(r),h=Ka(i);if(Ka(r))if(h){const r=new ArrayBuffer(o*u),n=F(r);e.copyTo(r,{planeIndex:s,frameOffset:a,frameCount:o,format:i});for(let e=0;e{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(void 0!==e.skipLiveWait&&"boolean"!==typeof e.skipLiveWait)throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},eo=e=>{if(!Fe(e))throw new TypeError("timestamp must be a number.")},to=(e,t,i)=>i.verifyKeyPackets?t.then(t=>y(null,null,function*(){if(!t||"delta"===t.type)return t;const i=yield e.determinePacketType(t);return i&&(t.type=i),t})):t;class io{constructor(e){if(!(e instanceof yo))throw new TypeError("track must be an InputTrack.");this._track=e}getFirstPacket(){return y(this,arguments,function*(e={}){if(Za(e),this._track.input._disposed)throw new Do;return to(this._track,this._track._backing.getFirstPacket(e),e)})}getFirstKeyPacket(){return y(this,arguments,function*(e={}){Za(e);const t=yield this.getFirstPacket(e);return t?"key"===t.type?t:this.getNextKeyPacket(t,e):null})}getPacket(e){return y(this,arguments,function*(e,t={}){if(eo(e),Za(t),this._track.input._disposed)throw new Do;return to(this._track,this._track._backing.getPacket(e,t),t)})}getNextPacket(e){return y(this,arguments,function*(e,t={}){if(!(e instanceof Li))throw new TypeError("packet must be an EncodedPacket.");if(Za(t),this._track.input._disposed)throw new Do;return to(this._track,this._track._backing.getNextPacket(e,t),t)})}getKeyPacket(e){return y(this,arguments,function*(e,t={}){if(eo(e),Za(t),this._track.input._disposed)throw new Do;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const i=yield this._track._backing.getKeyPacket(e,t);if(!i)return i;I("key"===i.type);return"delta"===(yield this._track.determinePacketType(i))?this.getKeyPacket(i.timestamp-1/(yield this._track.getTimeResolution()),t):i})}getNextKeyPacket(e){return y(this,arguments,function*(e,t={}){if(!(e instanceof Li))throw new TypeError("packet must be an EncodedPacket.");if(Za(t),this._track.input._disposed)throw new Do;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const i=yield this._track._backing.getNextKeyPacket(e,t);if(!i)return i;I("key"===i.type);return"delta"===(yield this._track.determinePacketType(i))?this.getNextKeyPacket(i,t):i})}packets(e,t,i={}){if(void 0!==e&&!(e instanceof Li))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!(null==i?void 0:i.metadataOnly))throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof Li))throw new TypeError("endPacket must be an EncodedPacket.");if(Za(i),this._track.input._disposed)throw new Do;const r=[];let{promise:n,resolve:s}=Y(),{promise:a,resolve:o}=Y(),l=!1,c=!1,u=null,d=!1;const h=[],f=()=>Math.max(2,h.length);(()=>y(this,null,function*(){let u=null!=e?e:yield this.getFirstPacket(i);for(;u&&!c&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=(null==t?void 0:t.sequenceNumber));)r.length>f()?(({promise:a,resolve:o}=Y()),yield a):(r.push(u),s(),({promise:n,resolve:s}=Y()),u=yield this.getNextPacket(u,i));l=!0,s()}))().catch(e=>{d||(u=e,d=!0,s())});const m=this._track;return{next(){return y(this,null,function*(){for(;;){if(m.input._disposed)throw new Do;if(c)return{value:void 0,done:!0};if(d)throw u;if(r.length>0){const e=r.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};yield n}})},return(){return y(this,null,function*(){return c=!0,o(),s(),{value:void 0,done:!0}})},throw(e){return y(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}class ro{constructor(e,t){this.onSample=e,this.onError=t}}class no{mediaSamplesInRange(e=-1/0,t=1/0,i){eo(e),eo(t);const r=[];let n=!1,s=null,{promise:a,resolve:o}=Y(),{promise:l,resolve:c}=Y(),u=!1,d=!1,m=!1,p=null,g=null,k=!1;const b=f(h({},i),{verifyKeyPackets:!0,metadataOnly:!1});(()=>y(this,null,function*(){var i;p=yield this._createDecoder(i=>{c(),i.timestamp>=t&&(d=!0),d?i.close():(s&&(i.timestamp>e?(r.push(s),n=!0):s.close()),i.timestamp>=e&&(r.push(i),n=!0),s=n?null:i,r.length>0&&(o(),({promise:a,resolve:o}=Y())))},e=>{k||(g=e,k=!0,o())});const h=this._createPacketSink(),f=null!=(i=yield h.getKeyPacket(e,b))?i:yield h.getFirstKeyPacket(b);let y=f;const T=h.packets(null!=f?f:void 0,void 0,b);for(yield T.next();y&&!d&&!this._track.input._disposed;){const e=so(r.length);if(r.length+p.getDecodeQueueSize()>e){({promise:l,resolve:c}=Y()),yield l;continue}p.decode(y);const t=yield T.next();if(t.done)break;y=t.value}yield T.return(),m||this._track.input._disposed||(yield p.flush()),!n&&s&&r.push(s),u=!0,o()}))().catch(e=>{k||(g=e,k=!0,o())}).finally(()=>{null==p||p.close()});const T=this._track,v=()=>{null==s||s.close();for(const e of r)e.close()};return{next(){return y(this,null,function*(){for(;;){if(T.input._disposed)throw m=!0,d=!0,v(),new Do;if(m)return{value:void 0,done:!0};if(k)throw m=!0,d=!0,v(),g;if(r.length>0){const e=r.shift();return c(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};yield a}})},return(){return y(this,null,function*(){return m=!0,d=!0,c(),o(),v(),{value:void 0,done:!0}})},throw(e){return y(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e,t){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const i=function(e){return T(this,null,function*(){Symbol.iterator in e?yield*v(e[Symbol.iterator]()):yield*v(e[Symbol.asyncIterator]())})}(e),r=[],n=[];let{promise:s,resolve:a}=Y(),{promise:o,resolve:l}=Y(),c=!1,u=!1,d=null,m=null,p=!1;const g=e=>{n.push(e),a(),({promise:s,resolve:a}=Y())},k=f(h({},t),{verifyKeyPackets:!0,metadataOnly:!1});(()=>y(this,null,function*(){d=yield this._createDecoder(e=>{if(l(),u)return void e.close();let t=0;for(;r.length>0&&e.timestamp-r[0]>-1e-10;)t++,r.shift();if(t>0)for(let i=0;i{p||(m=e,p=!0,a())});const e=this._createPacketSink();let t=null,s=null,h=-1;const f=()=>y(this,null,function*(){I(s),I(d);let t=s;for(d.decode(t);t.sequenceNumberi&&!u;)({promise:o,resolve:l}=Y()),yield o;if(u)break;const r=yield e.getNextPacket(t,k);I(r),d.decode(r),t=r}h=-1}),b=()=>y(this,null,function*(){I(d),yield d.flush();for(let e=0;e{p||(m=e,p=!0,a())}).finally(()=>{null==d||d.close()});const b=this._track,w=()=>{for(const e of n)null==e||e.close()};return{next(){return y(this,null,function*(){for(;;){if(b.input._disposed)throw u=!0,w(),new Do;if(u)return{value:void 0,done:!0};if(p)throw u=!0,w(),m;if(n.length>0){const e=n.shift();return I(void 0!==e),l(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};yield s}})},return(){return y(this,null,function*(){return u=!0,l(),a(),w(),{value:void 0,done:!0}})},throw(e){return y(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}const so=e=>0===e?40:8;class ao extends ro{constructor(e,t,i,r,n,s){var a,o,l,c,u,d,m,p;super(e,t),this.codec=i,this.decoderConfig=r,this.rotation=n,this.timeResolution=s,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ye,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1,this.finalSamples=[],this.mergeAlphaPromises=[];const g=Ya.find(e=>e.supports(i,r));if(g)this.customDecoder=new g,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof xa))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();I(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if(Pe()){if("avc"===i&&this.decoderConfig.description){const e=mt(R(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=gt(e.sequenceParameterSets[0]);t&&(0===t.frameMbsOnlyFlag&&(this.decoderConfig=f(h({},this.decoderConfig),{hardwareAcceleration:"prefer-software"})),0!==t.maxDecFrameBuffering&&1!==t.bitstreamRestrictionFlag&&(e.sequenceParameterSets[0]=yt(t),this.decoderConfig=f(h({},this.decoderConfig),{description:ft(e)})))}}q(this.decoderConfig.colorSpace)||(this.decoderConfig=f(h({},this.decoderConfig),{colorSpace:{primaries:null!=(o=null==(a=this.decoderConfig.colorSpace)?void 0:a.primaries)?o:"bt709",matrix:null!=(c=null==(l=this.decoderConfig.colorSpace)?void 0:l.matrix)?c:"bt709",transfer:null!=(d=null==(u=this.decoderConfig.colorSpace)?void 0:u.transfer)?d:"bt709",fullRange:null!=(p=null==(m=this.decoderConfig.colorSpace)?void 0:m.fullRange)&&p}}))}const t=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){var e,t;return this.customDecoder?this.customDecoderQueueSize:(I(this.decoder),Math.max(this.decoder.decodeQueueSize,null!=(t=null==(e=this.alphaDecoder)?void 0:e.decodeQueueSize)?t:0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--);else{if(I(this.decoder),Te()||Q(this.inputTimestamps,e.timestamp,e=>e),Pe()&&0===this.currentPacketIndex)if("avc"===this.codec){const t=[];let i=!1;for(const n of at(e.data,this.decoderConfig)){const r=ot(e.data[n.offset]);if(i||(i=r>=1&&r<=5),r===et.AUD){if(i)break;t.length=0}r>=20&&r<=31||t.push(e.data.subarray(n.offset,n.offset+n.length))}if(!this.decoderConfig.description)for(let e=0;e{if(t.description){const i=3&R(t.description)[4];return dt(e,i+1)}return ut(e)})(t,this.decoderConfig);e=new Li(r,e.type,e.timestamp,e.duration)}else if("hevc"===this.codec){const t=Ft(e.data,this.decoderConfig);t&&(e=new Li(t,e.type,e.timestamp,e.duration))}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha)return void this.pushNullAlphaFrame();if(this.merger||(this.merger=new lo),!this.alphaDecoder){const e=e=>{if(this.colorQueue.length>0){const t=this.colorQueue.shift();I(void 0!==t),this.mergeAlpha(t,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();I(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=Ut(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(null!=t?t:e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(const t of bt(e,this.decoderConfig)){const i=Tt(e[t.offset]);if(i===it.RASL_N||i===it.RASL_R)return!0}return!1}sampleHandler(e){if(Te()){if(this.sampleQueue.length>0&&e.timestamp>=C(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}Q(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();I(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}mergeAlpha(e,t){return y(this,null,function*(){const i=Y();this.mergeAlphaPromises.push(i.promise);const r={sample:null};this.finalSamples.push(r);try{if(t){I(this.merger);const i=yield this.merger.merge(e,t);r.sample=new xa(i)}else r.sample=new xa(e);for(;this.finalSamples.length>0&&null!==this.finalSamples[0].sample;){const e=this.finalSamples.shift();this.sampleHandler(e.sample)}}catch(n){J(this.finalSamples,r),this.onError(n)}finally{J(this.mergeAlphaPromises,i.promise),i.resolve()}})}flush(){return y(this,null,function*(){var e;if(this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(I(this.decoder),yield Promise.all([this.decoder.flush(),null==(e=this.alphaDecoder)?void 0:e.flush()]),yield Promise.all(this.mergeAlphaPromises),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),Te()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1})}close(){var e;this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(I(this.decoder),"closed"!==this.decoder.state&&this.decoder.close(),this.alphaDecoder&&"closed"!==this.alphaDecoder.state&&this.alphaDecoder.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,null==(e=this.merger)||e.close());for(const t of this.sampleQueue)t.close();this.sampleQueue.length=0}}let oo=null;class lo{constructor(){this.workers=[],this.nextWorkerIndex=0,this.pendingRequests=new Map,this.nextRequestId=0}merge(e,t){if(0===this.workers.length){if(!oo){const e=new Blob([`(${co.toString()})()`],{type:"application/javascript"});oo=URL.createObjectURL(e)}const e=se(navigator.hardwareConcurrency,1,4);for(let t=0;t{const t=e.data,i=this.pendingRequests.get(t.id);i&&(this.pendingRequests.delete(t.id),"error"in t?i.reject(new Error(t.error)):i.resolve(t.frame))}),e.addEventListener("error",e=>{const t=new Error(e.message||"Color/alpha merge worker error.");for(const i of this.pendingRequests.values())i.reject(t);this.pendingRequests.clear()}),this.workers.push(e)}}const i=this.nextRequestId++,r=Y();this.pendingRequests.set(i,r);const n=this.workers[this.nextWorkerIndex];return this.nextWorkerIndex=(this.nextWorkerIndex+1)%this.workers.length,n.postMessage({id:i,color:e,alpha:t},{transfer:[e,t]}),r.promise}close(){for(const t of this.workers)t.terminate();this.workers.length=0;const e=new Error("Color/alpha merger closed.");for(const t of this.pendingRequests.values())t.reject(e);this.pendingRequests.clear()}}const co=()=>{let e=null,t=null,i=Promise.resolve();self.addEventListener("message",e=>{const{id:t,color:n,alpha:s}=e.data;i=i.then(()=>y(null,null,function*(){try{const e=yield r(n,s);self.postMessage({id:t,frame:e},{transfer:[e]})}catch(e){self.postMessage({id:t,error:e.message})}finally{n.close(),s.close()}}))});const r=(e,t)=>y(null,null,function*(){const i=e.format,r=t.format;if(!i||!r)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");const o=i.includes("P10"),l=i.includes("P12"),c=r.includes("P10"),u=r.includes("P12");if(c!==o||u!==l)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${i}', alpha: '${r}').`);if("RGBX"===i||"RGBA"===i||"BGRX"===i||"BGRA"===i)return yield n(e,t,i);if("I420"===i||"I420P10"===i||"I420P12"===i||"I422"===i||"I422P10"===i||"I422P12"===i||"I444"===i||"I444P10"===i||"I444P12"===i)return yield s(e,t,i);if("NV12"===i)return yield a(e,t);throw new Error(`CPU color/alpha merging does not support format '${i}'.`)}),n=(e,t,i)=>y(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=c*u,h=new Uint8Array(4*d);yield e.copyTo(h);const f=yield o(t,c,u,1);for(let e=0,t=3;ey(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=i.includes("P10"),h=i.includes("P12"),f=d||h?2:1;let m,p;i.startsWith("I420")?(m=Math.ceil(c/2),p=Math.ceil(u/2)):i.startsWith("I422")?(m=Math.ceil(c/2),p=u):(m=c,p=u);const g=c*u,k=g*f,y=m*p*f,b=new Uint8Array(k+2*y+g*f);yield e.copyTo(b);const T=yield o(t,c,u,f),v=k+2*y;b.set(T,v);const S={format:i.slice(0,4)+"A"+i.slice(4),codedWidth:c,codedHeight:u,timestamp:e.timestamp,duration:null!=(l=e.duration)?l:void 0,transfer:[b.buffer]};return new VideoFrame(b,S)}),a=(e,i)=>y(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=c*u,h=Math.ceil(c/2)*Math.ceil(u/2),f=e.allocationSize();t&&t.byteLength===f||(t=new Uint8Array(f)),yield e.copyTo(t);const m=new Uint8Array(d+2*h+d);m.set(t.subarray(0,d),0);const p=d,g=d+h,k=d;for(let e=0;ey(null,null,function*(){const s=t.allocationSize();e&&e.byteLength===s||(e=new Uint8Array(s)),yield t.copyTo(e);const a=t.format;if("RGBA"===a||"BGRA"===a||"RGBX"===a||"BGRX"===a){const t="RGBA"===a||"RGBX"===a?0:2,n=i*r;for(let i=0;i{if(!e||"object"!==typeof e)throw new TypeError("decoderOptions must be an object.");if(void 0!==e.hardwareAcceleration&&!["no-preference","prefer-hardware","prefer-software"].includes(e.hardwareAcceleration))throw new TypeError("decoderOptions.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(void 0!==e.optimizeForLatency&&"boolean"!==typeof e.optimizeForLatency)throw new TypeError("decoderOptions.optimizeForLatency, when provided, must be a boolean.")};class ho extends no{constructor(e,t={}){if(!(e instanceof vo))throw new TypeError("videoTrack must be an InputVideoTrack.");uo(t),super(),this._track=e,this._decoderOptions=t}_createDecoder(e,t){return y(this,null,function*(){if(!(yield this._track.canDecode())){if("undefined"===typeof VideoDecoder)throw new Error(Ie("VideoDecoder"));throw new Error("This video track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=yield this._track.getCodec(),r=yield this._track.getRotation();let n=yield this._track.getDecoderConfig();const s=yield this._track.getTimeResolution();return I(i&&n),n=f(h({},n),{hardwareAcceleration:this._decoderOptions.hardwareAcceleration,optimizeForLatency:this._decoderOptions.optimizeForLatency}),new ao(e,t,i,n,r,s)})}_createPacketSink(){return new io(this._track)}getSample(e){return y(this,arguments,function*(e,t={}){eo(e);try{for(var i,r,n,s=S(this.mediaSamplesAtTimestamps([e],t));i=!(r=yield s.next()).done;i=!1){return r.value}}catch(r){n=[r]}finally{try{i&&(r=s.return)&&(yield r.call(s))}finally{if(n)throw n[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class fo{constructor(e,t={}){var i,r,n;if(this._rotation=0,this._initPromise=null,this._nextCanvasIndex=0,!(e instanceof vo))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&Da(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");void 0!==t.decoderOptions&&uo(t.decoderOptions),this._videoTrack=e,this._alpha=null!=(i=t.alpha)&&i,this._options=t,this._fit=null!=(r=t.fit)?r:"fill",this._videoSampleSink=new ho(e,t.decoderOptions),this._canvasPool=Array.from({length:null!=(n=t.poolSize)?n:0},()=>null)}_ensureInit(){var e;return null!=(e=this._initPromise)?e:this._initPromise=(()=>y(this,null,function*(){var e;const t=this._options,i=this._videoTrack,r=null!=(e=t.rotation)?e:yield i.getRotation(),n=yield i.getSquarePixelWidth(),s=yield i.getSquarePixelHeight(),[a,o]=r%180===0?[n,s]:[s,n];let l=t.crop;l&&(l=Aa(l,a,o));let[c,u]=l?[l.width,l.height]:[a,o];const d=c/u;void 0!==t.width&&void 0===t.height?(c=t.width,u=Math.round(c/d)):void 0===t.width&&void 0!==t.height?(u=t.height,c=Math.round(u*d)):void 0!==t.width&&void 0!==t.height&&(c=t.width,u=t.height),this._width=c,this._height=u,this._rotation=r,this._crop=l}))()}_videoSampleToWrappedCanvas(e){const t=this._width,i=this._height;let r=this._canvasPool[this._nextCanvasIndex],n=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=t,r.height=i):r=new OffscreenCanvas(t,i),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),n=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const s=r.getContext("2d",{alpha:this._alpha||Se()});I(s),e._drawWithFitAndMipmapping(r,s,{fit:this._fit,rotation:this._rotation,crop:this._crop,targetIsFresh:n,fillBlack:!this._alpha&&Se()});const a={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),a}getCanvas(e,t){return y(this,null,function*(){eo(e),yield this._ensureInit();const i=yield this._videoSampleSink.getSample(e,t);return i&&this._videoSampleToWrappedCanvas(i)})}canvases(e,t,i){return T(this,null,function*(){yield new b(this._ensureInit()),yield*v(ne(this._videoSampleSink.samples(e,t,i),e=>this._videoSampleToWrappedCanvas(e)))})}canvasesAtTimestamps(e,t){return T(this,null,function*(){yield new b(this._ensureInit()),yield*v(ne(this._videoSampleSink.samplesAtTimestamps(e,t),e=>e&&this._videoSampleToWrappedCanvas(e)))})}}class mo extends ro{constructor(e,t,i,r){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ye,this.customDecoderQueueSize=0,this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0;const n=t=>{let i=t.timestamp;null!==this.expectedFirstTimestamp&&null===this.currentTimestamp&&(this.timestampOffset=this.expectedFirstTimestamp-i),i+=this.timestampOffset,(null===this.currentTimestamp||Math.abs(i-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=i);const n=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const s=r.sampleRate;t.setTimestamp(Math.round(n*s)/s),e(t)},s=Ja.find(e=>e.supports(i,r));if(s)this.customDecoder=new s,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof Va))throw new TypeError("The argument passed to onSample must be an AudioSample.");n(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{n(new Va(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(r)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(I(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--)):(I(this.decoder),null!=this.expectedFirstTimestamp||(this.expectedFirstTimestamp=e.timestamp),this.decoder.decode(e.toEncodedAudioChunk()))}flush(){return y(this,null,function*(){this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(I(this.decoder),yield this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0})}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(I(this.decoder),"closed"!==this.decoder.state&&this.decoder.close())}}class po extends ro{constructor(e,t,i){super(e,t),this.decoderConfig=i,this.currentTimestamp=null,I(di.includes(i.codec)),this.codec=i.codec;const{dataType:r,sampleSize:n,littleEndian:s}=Pi(this.codec);switch(this.inputSampleSize=n,n){case 1:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint8(t)-u(2,7):"signed"===r?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===r?this.readInputValue=(e,t)=>(e=>{let t=0,i=0,r=~e;128&r&&(r&=-129,t=-1),i=5+((240&r)>>4);const n=(1<(e=>{let t=0,i=0,r=85^e;128&r&&(r&=-129,t=-1),i=4+((240&r)>>4);let n=0;return n=4!==i?1<e.getUint16(t,s)-u(2,15):"signed"===r?this.readInputValue=(e,t)=>e.getInt16(t,s):I(!1);break;case 3:"unsigned"===r?this.readInputValue=(e,t)=>ie(e,t,s)-u(2,23):"signed"===r?this.readInputValue=(e,t)=>((e,t,i)=>ie(e,t,i)<<8>>8)(e,t,s):I(!1);break;case 4:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint32(t,s)-u(2,31):"signed"===r?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===r?this.readInputValue=(e,t)=>e.getFloat32(t,s):I(!1);break;case 8:"float"===r?this.readInputValue=(e,t)=>e.getFloat64(t,s):I(!1);break;default:te(n),I(!1)}switch(n){case 1:"ulaw"===r||"alaw"===r?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,i)=>e.setUint8(t,i+u(2,7)));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i<<8,!0);break;case 4:this.outputSampleSize=4,"float"===r?(this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0);break;default:te(n),I(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=F(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,r=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,n=new ArrayBuffer(r),s=new DataView(n);for(let c=0;c=a)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=a;const l=new Va({format:this.outputFormat,data:n,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:o});this.onSample(l)}flush(){return y(this,null,function*(){})}close(){}}class go extends no{constructor(e){if(!(e instanceof So))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}_createDecoder(e,t){return y(this,null,function*(){if(!(yield this._track.canDecode())){if("undefined"===typeof AudioDecoder)throw new Error(Ie("AudioDecoder"));throw new Error("This audio track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=yield this._track.getCodec(),r=yield this._track.getDecoderConfig();return I(i&&r),di.includes(r.codec)?new po(e,t,r):new mo(e,t,i,r)})}_createPacketSink(){return new io(this._track)}getSample(e){return y(this,arguments,function*(e,t={}){eo(e);try{for(var i,r,n,s=S(this.mediaSamplesAtTimestamps([e],t));i=!(r=yield s.next()).done;i=!1){return r.value}}catch(r){n=[r]}finally{try{i&&(r=s.return)&&(yield r.call(s))}finally{if(n)throw n[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class ko{constructor(e){if(!(e instanceof So))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new go(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}getBuffer(e,t){return y(this,null,function*(){eo(e);const i=yield this._audioSampleSink.getSample(e,t);return i&&this._audioSampleToWrappedArrayBuffer(i)})}buffers(e,t,i){return ne(this._audioSampleSink.samples(e,t,i),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e,t){return ne(this._audioSampleSink.samplesAtTimestamps(e,t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class yo{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof vo}isAudioTrack(){return this instanceof So}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}getInternalCodecId(){return y(this,null,function*(){return this._backing.getInternalCodecId()})}get internalCodecId(){return bo(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}getLanguageCode(){return y(this,null,function*(){return this._backing.getLanguageCode()})}get languageCode(){return bo(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}getName(){return y(this,null,function*(){return this._backing.getName()})}get name(){return bo(this._backing.getName(),"name","getName")}getTimeResolution(){return y(this,null,function*(){return this._backing.getTimeResolution()})}get timeResolution(){return bo(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}isRelativeToUnixEpoch(){return y(this,null,function*(){return this._backing.isRelativeToUnixEpoch()})}getUnixTimeForTimestamp(e){return y(this,null,function*(){return this._backing.getUnixTimeForTimestamp(e)})}hasUnixTimeMapping(){return y(this,null,function*(){return null!==(yield this._backing.getUnixTimeForTimestamp(yield this.getFirstTimestamp()))})}getDisposition(){return y(this,null,function*(){return this._backing.getDisposition()})}get disposition(){return bo(this._backing.getDisposition(),"disposition","getDisposition")}getBitrate(){return y(this,null,function*(){return this._backing.getBitrate()})}getAverageBitrate(){return y(this,null,function*(){return this._backing.getAverageBitrate()})}getFirstTimestamp(){return y(this,null,function*(){var e;const t=yield this._backing.getFirstPacket({metadataOnly:!0});return null!=(e=null==t?void 0:t.timestamp)?e:0})}computeDuration(e){return y(this,null,function*(){var t,i;const r=yield this._backing.getPacket(1/0,h({metadataOnly:!0},e)),n=(null!=(t=null==r?void 0:r.timestamp)?t:0)+(null!=(i=null==r?void 0:r.duration)?i:0);return ce(n,yield this.getTimeResolution())})}getDurationFromMetadata(){return y(this,arguments,function*(e={}){return this._backing.getDurationFromMetadata(e)})}computePacketStats(e=1/0,t){return y(this,null,function*(){const i=new io(this);let r=1/0,n=-1/0,s=0,a=0;try{for(var o,l,c,u=S(i.packets(void 0,void 0,h({metadataOnly:!0},t)));o=!(l=yield u.next()).done;o=!1){const t=l.value;if(s>=e&&t.timestamp>=n)break;r=Math.min(r,t.timestamp),n=Math.max(n,t.timestamp+t.duration),s++,a+=t.byteLength}}catch(l){c=[l]}finally{try{o&&(l=u.return)&&(yield l.call(u))}finally{if(c)throw c[0]}}return{packetCount:s,averagePacketRate:s?Number((s/(n-r)).toPrecision(16)):0,averageBitrate:s?Number((8*a/(n-r)).toPrecision(16)):0}})}isLive(){return y(this,null,function*(){return null!==(yield this._backing.getLiveRefreshInterval())})}getLiveRefreshInterval(){return y(this,null,function*(){return this._backing.getLiveRefreshInterval()})}canBePairedWith(e){if(!(e instanceof yo))throw new TypeError("other must be an InputTrack.");return this.input===e.input&&this!==e&&(this._backing.getPairingMask()&e._backing.getPairingMask())!==BigInt("0")}getPairableTracks(e){return y(this,null,function*(){return this.input.getTracks(xo({filter:e=>e.canBePairedWith(this)},e))})}getPairableVideoTracks(e){return y(this,null,function*(){return this.input.getVideoTracks(xo({filter:e=>e.canBePairedWith(this)},e))})}getPairableAudioTracks(e){return y(this,null,function*(){return this.input.getAudioTracks(xo({filter:e=>e.canBePairedWith(this)},e))})}getPrimaryPairableVideoTrack(e){return y(this,null,function*(){return this.input.getPrimaryVideoTrack(xo({filter:e=>e.canBePairedWith(this)},e))})}getPrimaryPairableAudioTrack(e){return y(this,null,function*(){return this.input.getPrimaryAudioTrack(xo({filter:e=>e.canBePairedWith(this)},e))})}hasPairableTrack(e){return y(this,null,function*(){e&&(e=To(e));const t=yield this.input.getTracks();for(const i of t)if(this.canBePairedWith(i)&&(!e||(yield e(i))))return!0;return!1})}hasPairableVideoTrack(e){return e&&(e=To(e)),this.hasPairableTrack(t=>y(this,null,function*(){return t.isVideoTrack()&&(!e||(yield e(t)))}))}hasPairableAudioTrack(e){return e&&(e=To(e)),this.hasPairableTrack(t=>y(this,null,function*(){return t.isAudioTrack()&&(!e||(yield e(t)))}))}}const bo=(e,t,i)=>{if(Ce(e))throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${i}()' instead.`);return e},To=e=>{if(void 0!==e&&"function"!==typeof e)throw new TypeError("predicate, when provided, must be a function.");return e?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("predicate must return or resolve to a boolean value.");return e},r=e(t);return Ce(r)?r.then(i):i(r)}:void 0};class vo extends yo{constructor(e,t){super(e,t),this._pixelAspectRatioCache=null,this._backing=t}get type(){return"video"}getCodec(){return y(this,null,function*(){return this._backing.getCodec()})}get codec(){return bo(this._backing.getCodec(),"codec","getCodec")}hasOnlyKeyPackets(){return y(this,null,function*(){var e,t,i;return null!=(i=yield null==(t=(e=this._backing).getHasOnlyKeyPackets)?void 0:t.call(e))?i:"prores"===(yield this._backing.getCodec())})}getCodedWidth(){return y(this,null,function*(){return this._backing.getCodedWidth()})}get codedWidth(){return bo(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}getCodedHeight(){return y(this,null,function*(){return this._backing.getCodedHeight()})}get codedHeight(){return bo(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}getRotation(){return y(this,null,function*(){return this._backing.getRotation()})}get rotation(){return bo(this._backing.getRotation(),"rotation","getRotation")}getSquarePixelWidth(){return y(this,null,function*(){return this._backing.getSquarePixelWidth()})}get squarePixelWidth(){return bo(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}getSquarePixelHeight(){return y(this,null,function*(){return this._backing.getSquarePixelHeight()})}get squarePixelHeight(){return bo(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}getPixelAspectRatio(){return y(this,null,function*(){var e;return null!=(e=this._pixelAspectRatioCache)?e:this._pixelAspectRatioCache=Ne({num:(yield this.getSquarePixelWidth())*(yield this.getCodedHeight()),den:(yield this.getSquarePixelHeight())*(yield this.getCodedWidth())})})}get pixelAspectRatio(){var e;return null!=(e=this._pixelAspectRatioCache)?e:this._pixelAspectRatioCache=Ne({num:bo(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*bo(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:bo(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*bo(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")})}getDisplayWidth(){return y(this,null,function*(){var e,t;const i=yield null==(t=(e=this._backing).getMetadataDisplayWidth)?void 0:t.call(e);if(null!=i)return i;return(yield this.getRotation())%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight()})}get displayWidth(){var e,t;const i=null==(t=(e=this._backing).getMetadataDisplayWidth)?void 0:t.call(e);if(void 0!==i){const e=bo(i,"displayWidth","getDisplayWidth");if(null!==e)return e}const r=bo(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return bo(r,"displayWidth","getDisplayWidth")}getDisplayHeight(){return y(this,null,function*(){var e,t;const i=yield null==(t=(e=this._backing).getMetadataDisplayHeight)?void 0:t.call(e);if(null!=i)return i;return(yield this.getRotation())%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth()})}get displayHeight(){var e,t;const i=null==(t=(e=this._backing).getMetadataDisplayHeight)?void 0:t.call(e);if(void 0!==i){const e=bo(i,"displayHeight","getDisplayHeight");if(null!==e)return e}const r=bo(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return bo(r,"displayHeight","getDisplayHeight")}getColorSpace(){return y(this,null,function*(){return this._backing.getColorSpace()})}hasHighDynamicRange(){return y(this,null,function*(){const e=yield this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pq"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix})}canBeTransparent(){return y(this,null,function*(){return this._backing.canBeTransparent()})}getDecoderConfig(){return y(this,null,function*(){return this._backing.getDecoderConfig()})}getCodecParameterString(){return y(this,null,function*(){var e,t,i;const r=yield null==(t=(e=this._backing).getMetadataCodecParameterString)?void 0:t.call(e);if(null!=r)return r;const n=yield this._backing.getDecoderConfig();return null!=(i=null==n?void 0:n.codec)?i:null})}canDecode(){return y(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=yield this._backing.getCodec();if(I(null!==t),Ya.some(i=>i.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(yield VideoDecoder.isConfigSupported(e)).supported}catch(e){return We._error("Error during decodability check:",e),!1}})}determinePacketType(e){return y(this,null,function*(){if(!(e instanceof Li))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");const t=yield this.getCodec();if(null===t)return null;const i=yield this.getDecoderConfig();return I(i),Ut(t,i,e.data)})}computeFrameRateMetrics(){return y(this,arguments,function*(e={}){var t,i;if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.targetPacketCount&&(!Fe(e.targetPacketCount)||e.targetPacketCount<0))throw new TypeError("options.targetPacketCount must be a non-negative number.");const r=yield this.getTimeResolution(),n=null!=(t=e.targetPacketCount)?t:256,s=new io(this),a=[];let o=-1/0,l=0;try{for(var c,u,d,h=S(s.packets(void 0,void 0,{metadataOnly:!0}));c=!(u=yield h.next()).done;c=!1){const e=u.value;if(a.length>=n&&e.timestamp>=o)break;a.push(e.timestamp),o=Math.max(o,e.timestamp),l++}}catch(u){d=[u]}finally{try{c&&(u=h.return)&&(yield u.call(h))}finally{if(d)throw d[0]}}const f=new Float64Array(a.length);for(let S=0;Se-t),x=P-1>>1,C=P>>1;let B=0,E=0,_=0;for(const S of I)if(_+=b.get(S),0===B&&_>x&&(B=S),_>C){E=S;break}const R=(k/B+k/E)/2;return{underlyingFrameRate:g,bestGuessFrameRate:null!==g?g:_o(R),minFrameRate:k/v,maxFrameRate:k/T,averageFrameRate:k*P/w,medianFrameRate:R,frameRateIsConstant:null!==g&&1===T&&1===v,probedPacketCount:l}})}}class So extends yo{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}getCodec(){return y(this,null,function*(){return this._backing.getCodec()})}get codec(){return bo(this._backing.getCodec(),"codec","getCodec")}hasOnlyKeyPackets(){return y(this,null,function*(){var e,t,i;return null==(i=yield null==(t=(e=this._backing).getHasOnlyKeyPackets)?void 0:t.call(e))||i})}getNumberOfChannels(){return 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t?(i=Vo(e,!0),r=Vo(e,!0)):(r=Vo(e,!1),i=Vo(e,!1)),4294967296*r+i},Go=e=>4294967296*jo(e)+jo(e),Qo=e=>4294967296*Xo(e)+jo(e),Yo=e=>{const t=Ko(e),i=(e=>{Oo(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*i+t},Jo=e=>{Oo(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},Zo=e=>{Oo(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},el=(e,t)=>{Oo(e,t);let i="";for(let r=0;rA.decode(Lo(e,t)).split("\n").map(e=>e.trim()).filter(e=>{var t;return e.length>0&&!(null==(t=null==i?void 0:i.ignore)?void 0:t.call(i,e))});var il,rl,nl,sl;(rl=il||(il={}))[rl.Unsynchronisation=128]="Unsynchronisation",rl[rl.ExtendedHeader=64]="ExtendedHeader",rl[rl.ExperimentalIndicator=32]="ExperimentalIndicator",rl[rl.Footer=16]="Footer",(sl=nl||(nl={}))[sl.ISO_8859_1=0]="ISO_8859_1",sl[sl.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",sl[sl.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",sl[sl.UTF_8=3]="UTF_8";const al=128,ol=10,ll=["Blues","Classic 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s&il.Footer&&(o+=ol),{majorVersion:r,revision:n,flags:s,size:o}},hl=(e,t,i)=>{var r,n,s,a,o,l;if(![2,3,4].includes(t.majorVersion))return void We._warn(`Unsupported ID3v2 major version: ${t.majorVersion}`);const c=t.flags&il.Footer?t.size-ol:t.size,u=Lo(e,c),d=new fl(t,u);if(t.flags&il.Unsynchronisation&&3===t.majorVersion&&d.ununsynchronizeAll(),t.flags&il.ExtendedHeader){const e=d.readU32();3===t.majorVersion?d.pos+=e:d.pos+=e-4}for(;d.pos<=d.bytes.length-d.frameHeaderSize();){const e=d.readId3V2Frame();if(!e)break;const c=d.pos,u=d.pos+e.size;let h=!1,f=!1,m=!1;if(3===t.majorVersion?(h=!!(64&e.flags),f=!!(128&e.flags)):4===t.majorVersion&&(h=!!(4&e.flags),f=!!(8&e.flags),m=!!(2&e.flags)||!!(t.flags&il.Unsynchronisation)),h)We._warn(`Skipping encrypted ID3v2 frame ${e.id}`),d.pos=u;else if(f)We._warn(`Skipping compressed ID3v2 frame ${e.id}`),d.pos=u;else{if(m&&d.ununsynchronizeRegion(d.pos,u),null!=i.raw||(i.raw={}),"TXXX"===e.id){const 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e=d.readId3V2EncodingAndText(u),t=Number.parseInt(e,10);Number.isInteger(t)&&(null!=i.date||(i.date=new Date(String(t))))}break;case"USLT":case"ULT":{const e=d.readU8();d.pos+=3,d.readId3V2Text(e,u),null!=i.lyrics||(i.lyrics=d.readId3V2Text(e,u))}break;case"COMM":case"COM":{const e=d.readU8();d.pos+=3,d.readId3V2Text(e,u),null!=i.comment||(i.comment=d.readId3V2Text(e,u))}break;case"APIC":case"PIC":{const e=d.readId3V2TextEncoding();let r;if(2===t.majorVersion){const e=d.readAscii(3);r="PNG"===e?"image/png":"JPG"===e?"image/jpeg":"image/*"}else r=d.readId3V2Text(e,u);const n=d.readU8(),s=d.readId3V2Text(e,u).trimEnd(),a=u-d.pos;if(a>=0){const e=d.readBytes(a);i.images||(i.images=[]),i.images.push({data:e,mimeType:r,kind:3===n?"coverFront":4===n?"coverBack":"unknown",description:s})}}break;default:d.pos+=e.size}d.pos=u}}};class fl{constructor(e,t){this.header=e,this.bytes=t,this.pos=0,this.view=new DataView(t.buffer,t.byteOffset,t.byteLength)}frameHeaderSize(){return 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this.paused?this.playbackTimeAtStart:(this.audioContext.currentTime-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart}ensureAudioContext(e){if(this.audioContext)return;const t=window.AudioContext||window.webkitAudioContext;try{this.audioContext=new t({sampleRate:e})}catch(i){this.audioContext=new t}this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination),this.updateGain()}updateGain(){if(!this.gainNode)return;const e=this.muted?0:this.volume;this.gainNode.gain.value=e*e}stopQueuedNodes(){this.queuedNodes.forEach(e=>e.stop()),this.queuedNodes.clear()}stopIterator(){return y(this,null,function*(){var e;yield null==(e=this.audioIterator)?void 0:e.return(),this.audioIterator=null})}handleNoAudioTrack(){this.audioSink=null,this.ensureAudioContext()}load(e,t){return y(this,null,function*(){++this.asyncId,yield 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y(this,null,function*(){if(!this.paused)return;this.audioContext||this.ensureAudioContext(),"suspended"===this.audioContext.state&&(yield this.audioContext.resume()),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart,this.paused=!1;const e=++this.asyncId;this.runIterator(e)})}pause(){this.paused||(this.playbackTimeAtStart=this.currentTime,this.paused=!0,this.stopIterator(),this.stopQueuedNodes())}seek(e){return y(this,null,function*(){this.playbackTimeAtStart=Math.max(0,e),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart;const t=++this.asyncId;this.paused||this.runIterator(t)})}setVolume(e,t){this.volume=e,this.muted=t,this.updateGain()}setPlaybackRate(e){if(e!==this.playbackRate&&(this.paused||(this.playbackTimeAtStart=this.currentTime,this.audioContextStartTime=this.audioContext.currentTime),this.playbackRate=e,!this.paused)){const e=++this.asyncId;this.runIterator(e)}}destroy(){var e;this.asyncId++,this.pause(),null==(e=this.audioContext)||e.close(),this.audioContext=null,this.input=null,this.audioSink=null}}function pl(e){return y(this,null,function*(){var t,i;return null!=(i=null!=(t=yield e.getAverageBitrate())?t:yield e.getBitrate())?i:0})}const gl=/\.m3u8(?:$|[?#])/i;function kl(e){return"string"===typeof e&&gl.test(e)}function yl(e){const t=function(e){return"string"===typeof e?new Bs(e):e instanceof Blob?new Ps(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new Rs(e):null!=e?e:null}(e);return t?new Fo({source:t,formats:kl(e)?ya:ka}):null}class bl{constructor(){this.active=!0,this.input=null,this.timers=new Set,this.controller="undefined"===typeof AbortController?void 0:new AbortController,this.cancellation=new Promise(e=>{this.resolveCancellation=e})}get signal(){var e;return null==(e=this.controller)?void 0:e.signal}own(e){this.active?this.input=e:e.dispose()}defer(e){if(!this.active)return;const t=setTimeout(()=>{this.timers.delete(t),this.active&&e()},0);this.timers.add(t)}wait(e,t){return y(this,null,function*(){try{yield Promise.race([e,this.cancellation,t>0?this.timeout(t):new Promise(()=>{})])}finally{void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0)}})}timeout(e){return new Promise((t,i)=>{this.deadline=setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){const e=this.input;this.input=null,null==e||e.dispose()}cancel(){var e;if(this.active){this.active=!1;for(const e of this.timers)clearTimeout(e);this.timers.clear(),void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0),this.resolveCancellation(),null==(e=this.controller)||e.abort(),this.disposeInput()}}}function Tl(e,t,i){for(const r of i){if(!t())return;e.emit(r)}}function vl(e){return y(this,arguments,function*({input:e,videoTrack:t,audioTrack:i}){const 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e=this.seeking;this.seeking=null,null==e||e.complete.resolve(),null==e||e.resolve(),this.host.seeking=!1}ended(){this.wanted=!1,this.cancelPlay()}stop(){this.host.paused||(this.host.paused=!0,this.stopEngines(),this.host.events.emit("pause"))}stopEngines(){const e=[];for(const i of[()=>this.host.audio.pause(),()=>this.host.video.stop()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}pause(){this.wanted=!1,this.cancelPlay(),this.stop()}play(){if(this.host.destroyed)return Promise.resolve();if(this.wanted=!0,this.playing)return this.playing.promise;if(this.host.ended)return this.seek(0,!0);if(!this.host.paused&&!this.seeking)return Promise.resolve();const e=this.operation();return this.playing=e,this.runPlay(e).then(e.resolve,e.reject),e.promise}startAudio(){return y(this,null,function*(){this.audioStart||(this.audioStart=this.host.audio.play());const e=this.audioStart;try{yield e}finally{this.audioStart===e&&(this.audioStart=null)}})}runPlay(e){return y(this,null,function*(){const t=()=>this.current(e,"playing")&&this.wanted;try{for(;this.seeking;)if(yield this.seeking.complete.promise,!t())return;if(!t())return;if(this.host.paused=!1,yield this.startAudio(),!t())return void(this.wanted&&!this.host.destroyed||this.host.audio.pause());this.host.video.start(this.host.audio),Tl(this.host.events,t,["play","playing"])}catch(i){if(!t())return;this.wanted=!1,this.host.paused=!0;try{this.stopEngines()}catch(r){console.warn("MediaBunny play cleanup error:",r)}throw i}finally{this.playing===e&&(this.playing=null)}})}seek(e,t){return this.position(t=>y(this,null,function*(){const i=this.host.audio.seek(e),r=t()?this.host.video.seek(e):Promise.resolve();yield Promise.all([i,r])}),["seeked"],!1,t)}replace(e,t){return this.position(i=>y(this,null,function*(){e.duration=yield vl(e),i()&&(this.host.media=e,yield Promise.all([this.host.video.load(e),this.host.audio.load(e)]),i()&&(yield Promise.all([this.host.video.seek(t),this.host.audio.seek(t)]),i()&&(this.host.readyState=4,this.host.networkState=1)))}),["loadedmetadata","durationchange","progress","loadeddata","canplay","canplaythrough","seeked"],!0)}position(e,t,i,r){if(this.host.destroyed)return Promise.resolve();this.wanted=null!=r?r:this.seeking?this.wanted:!this.host.paused,this.cancelPlay();const n=this.seeking,s=this.operation();return this.seeking=s,null==n||n.complete.resolve(),null==n||n.resolve(),this.runPosition(s,e,t,i).then(s.resolve,s.reject),s.promise}runPosition(e,t,i,r){return y(this,null,function*(){const n=()=>this.current(e,"seeking");let s=!1;try{if(r&&this.stop(),!n())return;if(this.host.ended=!1,this.host.seeking=!0,Tl(this.host.events,n,["seeking","waiting"]),!n())return;if(r||this.stop(),!n())return;if(yield t(n),!n())return;if(this.host.seeking=!1,e.complete.resolve(),Tl(this.host.events,n,i),!n())return;this.seeking=null,s=this.wanted}catch(a){if(!n())return;throw this.host.seeking=!1,this.wanted=!1,this.cancelPlay(),this.host.reportError(a),a}finally{e.complete.resolve(),this.seeking===e&&(this.seeking=null)}s&&(yield this.play())})}}class Pl{constructor({canvas:e,ctx:t,events:i,timeupdateInterval:r=250,avSyncTolerance:n=.12,dropLateFrames:s=!1,poster:a="",preflightRange:o=!1}){this.canvas=e,this.ctx=t,this.events=i,this.timeupdateInterval=r,this.avSyncTolerance=n,this.dropLateFrames=s,this.poster=a,this.preflightRange=o,this.input=null,this.videoSink=null,this.videoIterator=null,this.nextFrame=null,this.rafId=0,this.asyncId=0,this.width=0,this.height=0,this.duration=Number.NaN,this.audioClock=null,this.lastTimeUpdate=0,this.stalled=!1,this.playbackRate=1,this.posterDrawn=!1,this.isFetching=!1}preflight(e,t,i){return y(this,null,function*(){return function(e,t,i,r,n=()=>!0){return y(this,null,function*(){if((null==r?void 0:r.aborted)||!n())return!1;if(!t||"string"!==typeof e||kl(e))return!0;try{const t=yield fetch(e,r?{method:"HEAD",signal:r}:{method:"HEAD"});if((null==r?void 0:r.aborted)||!n())return!1;const s=t.headers.get("accept-ranges");return!(!s||"none"===s)||(i.emit("error",new Event("RangeNotSupported")),!1)}catch(s){return!((null==r?void 0:r.aborted)||!n())&&(console.warn("Preflight check failed:",s),!0)}})}(e,this.preflightRange,this.events,t,i)})}drawPoster(){if(!this.poster||this.posterDrawn)return;const e=new Image;e.onload=()=>{this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,this.ctx.drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e.src=this.poster}stopIterator(){return y(this,null,function*(){var e;yield null==(e=this.videoIterator)?void 0:e.return(),this.videoIterator=null})}clear(){this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height)}load(e,t){return y(this,null,function*(){++this.asyncId,yield this.stopIterator(),this.clear(),this.posterDrawn=!1;const{input:i,videoTrack:r,duration:n}=e;if(this.input=i,this.duration=n,!r)return this.handleNoVideoTrack(),void(null==t||t());if(null===r.codec||!(yield r.canDecode()))return this.handleNoVideoTrack(),void(null==t||t());const s=yield r.canBeTransparent();this.videoSink=new fo(r,{poolSize:2,fit:"contain",alpha:s}),this.width=r.displayWidth,this.height=r.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,null==t||t(),yield this.resetIterator(0)})}handleNoVideoTrack(){this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster()}resetIterator(e){return y(this,null,function*(){var t,i;if(yield this.stopIterator(),!this.videoSink)return;this.videoIterator=this.videoSink.canvases(e);const r=null!=(t=(yield this.videoIterator.next()).value)?t:null,n=null!=(i=(yield this.videoIterator.next()).value)?i:null;this.nextFrame=n,r?this.ctx.drawImage(r.canvas,0,0):this.drawPoster()})}updateNextFrame(e){return y(this,null,function*(){var t;if(this.videoIterator&&!this.isFetching){this.isFetching=!0;try{for(;;){const i=null!=(t=(yield this.videoIterator.next()).value)?t:null;if(!i||e!==this.asyncId)return;const r=this.audioClock.currentTime,n=this.dropLateFrames?Math.max(.06,this.avSyncTolerance/Math.max(1,this.playbackRate)):0;if(!(this.dropLateFrames&&i.timestampr)return void(this.nextFrame=null)}}}finally{this.isFetching=!1}}})}render(){if(!this.audioClock)return;const e=this.audioClock.currentTime,t=Date.now();if(t-this.lastTimeUpdate>=this.timeupdateInterval&&(this.events.emit("timeupdate"),this.lastTimeUpdate=t),Number.isFinite(this.duration)&&e>=this.duration)return this.stop(),this.stalled=!1,this.events.emit("ended"),this.events.emit("pause"),void this.events.emit("canplay");this.nextFrame&&this.nextFrame.timestamp<=e?(this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.ctx.drawImage(this.nextFrame.canvas,0,0),this.nextFrame=null,this.updateNextFrame(this.asyncId),this.stalled&&(this.events.emit("canplay"),this.events.emit("playing"),this.stalled=!1)):this.nextFrame||(this.updateNextFrame(this.asyncId),!this.nextFrame&&Number.isFinite(this.duration)&&ethis.render())}start(e){this.audioClock=e,this.asyncId++,this.stalled=!1,this.updateNextFrame(this.asyncId),this.rafId=requestAnimationFrame(()=>this.render())}stop(){cancelAnimationFrame(this.rafId)}seek(e){return y(this,null,function*(){this.asyncId++,yield this.resetIterator(e)})}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){this.asyncId++,this.stop(),this.stopIterator(),this.posterDrawn=!1,this.videoSink=null,this.input=null}}class Il{constructor({canvas:e,ctx:i,events:r,option:n={}}){var s,a,o,l,c;g(this,t),this.events=r,this.option=n,this.audio=new ml(r),this.video=new Pl({canvas:e,ctx:i,events:r,timeupdateInterval:null!=(s=n.timeupdateInterval)?s:250,avSyncTolerance:null!=(a=n.avSyncTolerance)?a:.12,dropLateFrames:null!=(o=n.dropLateFrames)&&o,poster:null!=(l=n.poster)?l:"",preflightRange:null!=(c=n.preflightRange)&&c}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,this.input=null,this.media=null,this.loadSession=null,this.destroyed=!1,k(this,t,new wl(this)),r.addEventListener("ended",()=>{this.destroyed||(this.ended=!0,this.paused=!0,p(this,t).ended())})}load(e){return y(this,null,function*(){var i,r;if(this.destroyed)return;const n=++this.loadSeq;if(p(this,t).invalidate(),null==(i=this.loadSession)||i.cancel(),n!==this.loadSeq||this.destroyed)return;if(this.pause(),n!==this.loadSeq||this.destroyed)return;this.disposeInput();const s=new bl;this.loadSession=s,this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,s.defer(()=>this.events.emit("waiting")),s.defer(()=>this.events.emit("loadstart"));const a=Number.isFinite(this.option.loadTimeout)&&null!=(r=this.option.loadTimeout)?r:0;try{yield s.wait(this.performLoad(e,n,s),a)}catch(o){if(n!==this.loadSeq)return;const e=++this.loadSeq;if(p(this,t).invalidate(),s.cancel(),e!==this.loadSeq||this.destroyed)return;this.disposeInput(),this.reportError(o)}})}performLoad(e,t){return y(this,arguments,function*(e,t,i=this.loadSession){const r=()=>!this.destroyed&&t===this.loadSeq;if(!i||!(yield this.video.preflight(e,i.signal,r))||!r())return;const n=yl(e);if(!n)return this.video.handleNoVideoTrack(),void(r()&&this.audio.handleNoAudioTrack());i.own(n);const s=yield function(e,t){return y(this,null,function*(){const i=yield e.getPrimaryVideoTrack(),r=i?yield i.getPrimaryPairableAudioTrack():yield e.getPrimaryAudioTrack(),n=yield vl({input:e,videoTrack:i,audioTrack:r}),s=i||r,a=kl(t);return{input:e,videoTrack:i,audioTrack:r,duration:n,isLive:!Number.isFinite(n)&&Boolean(s&&(yield s.isLive())),isHls:a,videoMode:a?"auto":"manual",audioMode:a?"auto":"manual"}})}(n,e);if(!r())return;if(!s.videoTrack&&!s.audioTrack)throw this.video.handleNoVideoTrack(),this.video.duration=Number.NaN,this.audio.duration=Number.NaN,new Error("Input has no audio or video tracks.");this.input=n,this.media=s;const a=function(e,t){let i=!1,r=!1,n=!1;function s(s){t()&&!n&&("video"===s?i=!0:r=!0,i&&r&&(n=!0,e()))}return{video:()=>s("video"),audio:()=>s("audio")}}(()=>{this.readyState=1,Tl(this.events,r,["loadedmetadata","durationchange","progress"])},r);try{const e=this.video.load(s,a.video),t=r()?this.audio.load(s,a.audio):Promise.resolve();if(yield Promise.all([e,t]),!r())return;this.readyState=4,this.networkState=1,Tl(this.events,r,["loadeddata","canplay","canplaythrough","progress"])}catch(o){if(!r())return;throw console.error("MediaBunny load error:",o),o}})}createTimeout(e){return new Promise((t,i)=>{setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){var e;null==(e=this.loadSession)||e.disposeInput(),this.input=null,this.media=null}replaceTracks(e){return y(this,null,function*(){if(this.media&&!this.destroyed)return p(this,t).replace(h(h({},this.media),e),this.currentTime)})}selectHlsQuality(e){return y(this,null,function*(){return function(e,t){return y(this,null,function*(){var i;const{input:r,media:n,loadSeq:s}=e;if(!(null==n?void 0:n.isHls)||!r||e.destroyed)return;const a=()=>!e.destroyed&&e.loadSeq===s&&e.input===r&&e.media===n;let o;try{const e=yield r.getVideoTracks();if(!a())return;const s="auto"===t?yield r.getPrimaryVideoTrack():null!=(i=e.find(e=>e.id===t))?i:n.videoTrack;if(!a()||!s)return;let l=n.audioTrack,c=n.audioMode;l&&s.canBePairedWith(l)||(l=yield s.getPrimaryPairableAudioTrack(),c="auto"),o={videoTrack:s,audioTrack:l,videoMode:"auto"===t?"auto":"manual",audioMode:c}}catch(l){if(!a())return;throw l}a()&&(yield e.replaceTracks(o))})}(this,e)})}selectHlsAudio(e){return y(this,null,function*(){return function(e,t){return y(this,null,function*(){var i;const{input:r,media:n,loadSeq:s}=e;if(!(null==n?void 0:n.isHls)||!r||e.destroyed)return;const a=()=>!e.destroyed&&e.loadSeq===s&&e.input===r&&e.media===n;let o;try{const e=yield r.getAudioTracks();if(!a())return;const s="auto"===t?n.videoTrack?yield n.videoTrack.getPrimaryPairableAudioTrack():yield r.getPrimaryAudioTrack():null!=(i=e.find(e=>e.id===t))?i:n.audioTrack;if(!a()||!s)return;let l=n.videoTrack,c=n.videoMode;l&&s.canBePairedWith(l)||(l=yield s.getPrimaryPairableVideoTrack(),c="auto"),o={videoTrack:l,audioTrack:s,videoMode:c,audioMode:"auto"===t?"auto":"manual"}}catch(l){if(!a())return;throw l}a()&&(yield e.replaceTracks(o))})}(this,e)})}getHlsState(){return y(this,null,function*(){const e=this.media;if(this.destroyed)return null;try{const t=yield function(e){return y(this,null,function*(){var t,i,r,n;if(!(null==e?void 0:e.isHls)||!e.input)return null;const[s,a]=yield Promise.all([e.input.getVideoTracks(),e.videoTrack?e.videoTrack.getPairableAudioTracks():[]]),[o,l]=yield Promise.all([Promise.all(s.map((e,t)=>y(null,null,function*(){return{id:e.id,track:e,index:t,name:yield e.getName(),height:yield e.getDisplayHeight(),bitrate:yield pl(e)}}))),Promise.all(a.map((e,t)=>y(null,null,function*(){const i=yield e.getName(),r=yield e.getLanguageCode();return{id:e.id,track:e,index:t,name:i,lang:r,language:r,bitrate:yield pl(e)}})))]);return{levels:o,audios:l,currentLevel:e.videoTrack&&null!=(t=o.find(t=>{var i;return t.id===(null==(i=e.videoTrack)?void 0:i.id)}))?t:null,currentAudio:e.audioTrack&&null!=(i=l.find(t=>{var i;return t.id===(null==(i=e.audioTrack)?void 0:i.id)}))?i:null,videoMode:null!=(r=e.videoMode)?r:"auto",audioMode:null!=(n=e.audioMode)?n:"auto"}})}(e);return this.destroyed||this.media!==e?null:t}catch(t){if(this.destroyed||this.media!==e)return null;throw t}})}play(){return y(this,null,function*(){return p(this,t).play()})}pause(){p(this,t).pause()}seek(e){return y(this,null,function*(){return p(this,t).seek(e)})}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}reportError(e){if(this.destroyed)return;const t=e&&"object"===typeof e?Reflect.get(e,"message"):void 0;this.error={code:4,message:"string"===typeof t?t:String(e)},this.networkState=3,this.events.emit("error")}destroy(){if(this.destroyed)return;this.destroyed=!0,this.loadSeq++,p(this,t).invalidate();const e=[];for(const t of[()=>{var e;return null==(e=this.loadSession)?void 0:e.cancel()},()=>this.pause(),()=>this.disposeInput(),()=>this.audio.destroy(),()=>this.video.destroy()])try{t()}catch(i){e.push(i)}if(e.length)throw e[0]}get currentTime(){return this.audio.currentTime}get duration(){var e,t,i;return null!=(i=null!=(t=null==(e=this.media)?void 0:e.duration)?t:this.audio.duration)?i:this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}t=new WeakMap;const xl=new WeakMap;function Cl(e){let t=xl.get(e);return t||(t={closed:!1,frames:new Set},xl.set(e,t)),t}class Bl{constructor({art:e,canvas:t,ctx:i,option:r}){var n,s;this.art=e,this.canvas=t,this.option=r,this.events=new P,this.engine=new Il({canvas:t,ctx:i,events:this.events,option:r}),this._src=null,this._volume=null!=(n=r.volume)?n:.7,this._muted=!!r.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),r.source?this.src=r.source:(null==(s=e.option)?void 0:s.url)&&(this.src=e.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){Promise.resolve(this.engine.seek(Number(e)||0)).catch(()=>{})}get duration(){return this.engine.duration}get buffered(){return this.createTimeRanges(0,this.engine.duration)}get played(){return this.createTimeRanges(0,this.engine.currentTime)}get seekable(){return this.createTimeRanges(0,this.engine.duration)}createTimeRanges(e,t){return function(e,t,i){return!e||Number.isNaN(e)||i<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>t,end:()=>i}}(this.engine.duration,e,t)}get paused(){return this.engine.paused}get playing(){return!this.engine.paused&&!this.engine.ended}get ended(){return this.engine.ended}get seeking(){return this.engine.seeking}get readyState(){return this.engine.readyState}get networkState(){return this.engine.networkState}get error(){return this.engine.error}get playbackRate(){return this._playbackRate}set playbackRate(e){const t=Number(e);Number.isNaN(t)||t<=0||(this._playbackRate=t,this.engine.setPlaybackRate(t),this.events.emit("ratechange"))}get volume(){return this._volume}set volume(e){var t;this._volume=(t=e,Math.max(0,Math.min(1,Number(t)||0))),this._muted=!1,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}get muted(){return this._muted}set muted(e){this._muted=!!e,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}play(){return this.engine.play()}pause(){this.engine.pause()}load(){this._src&&this.engine.load(this._src)}getM3u8State(){return this.engine.getHlsState()}switchM3u8Quality(e){return this.engine.selectHlsQuality(e)}switchM3u8Audio(e){return this.engine.selectHlsAudio(e)}get videoWidth(){return this.engine.videoWidth}get videoHeight(){return this.engine.videoHeight}get poster(){return this.option.poster||""}set poster(e){this.option.poster=e}get autoplay(){return this.option.autoplay||!1}set autoplay(e){}get loop(){return this.option.loop||!1}set loop(e){}get controls(){return!1}set controls(e){}get playsInline(){return!0}set playsInline(e){}get crossOrigin(){return this.option.crossOrigin||""}set crossOrigin(e){}get preload(){return"auto"}set preload(e){}get defaultMuted(){return!1}set defaultMuted(e){}get defaultPlaybackRate(){return 1}set defaultPlaybackRate(e){}canPlayType(e){return"maybe"}getBoundingClientRect(){return this.canvas.getBoundingClientRect()}requestVideoFrameCallback(e){return function(e,t){const i=Cl(e);if(i.closed)return 0;const r=requestAnimationFrame(n=>{i.frames.delete(r),i.closed||t(n,{presentationTime:e.engine.currentTime,expectedDisplayTime:n+16.6,width:e.engine.videoWidth,height:e.engine.videoHeight,mediaTime:e.engine.currentTime,presentedFrames:0,processingDuration:0,captureTime:n,receiveTime:n,rtpTimestamp:0})});return i.frames.add(r),r}(this,e)}cancelVideoFrameCallback(e){!function(e,t){Cl(e).frames.delete(t),cancelAnimationFrame(t)}(this,e)}setAttribute(e,t){"src"===e?this.src=t:"autoplay"===e?this.autoplay=t:"loop"===e?this.loop=t:"muted"===e?this.muted=!0:Reflect.apply(this.canvas.setAttribute,this.canvas,[e,t])}destroy(){if(function(e){const t=Cl(e);if(t.closed)return!1;t.closed=!0;for(const i of t.frames)cancelAnimationFrame(i);return t.frames.clear(),!0}(this))try{this.engine.destroy()}finally{this.events.destroy()}}}return function(e={}){return t=>{const{constructor:i}=t,{createElement:r}=i.utils,n=r("canvas"),s=n.getContext("2d"),a=new Bl({art:t,canvas:n,ctx:s,option:e});t.mediabunny=a;const 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e=Qe(c),i=J(e),r=i.getUint32(0,!1),n=i.getUint32(4,!1),s=String.fromCharCode(...e.subarray(8,8+n)),a=i.getUint32(8+n,!1),o=Z.decode(e.subarray(12+n,12+n+a)),l=i.getUint32(n+a+28),u=e.subarray(n+a+32,n+a+32+l);null!=t.images||(t.images=[]),t.images.push({data:u,mimeType:s,kind:3===r?"coverFront":4===r?"coverBack":"unknown",name:void 0,description:o||void 0})}}}},ui=[2,1,2,3,3,4,4,5],di=e=>{if(e.length<7)return null;if(11!==e[0]||119!==e[1])return null;const t=new ht(e);t.skipBits(16),t.skipBits(16);const i=t.readBits(2);if(3===i)return null;const r=t.readBits(6),n=t.readBits(5);if(n>8)return null;const 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e||null===e))throw new TypeError("options, when provided, must be an object.");if(void 0!==(null==e?void 0:e.data)&&!(e.data instanceof Uint8Array))throw new TypeError("options.data, when provided, must be a Uint8Array.");if(void 0!==(null==e?void 0:e.type)&&"key"!==e.type&&"delta"!==e.type)throw new TypeError('options.type, when provided, must be either "key" or "delta".');if(void 0!==(null==e?void 0:e.timestamp)&&!Number.isFinite(e.timestamp))throw new TypeError("options.timestamp, when provided, must be a number.");if(void 0!==(null==e?void 0:e.duration)&&!Number.isFinite(e.duration))throw new TypeError("options.duration, when provided, must be a number.");if(void 0!==(null==e?void 0:e.sequenceNumber)&&!Number.isFinite(e.sequenceNumber))throw new TypeError("options.sequenceNumber, when provided, must be a number.");if(void 0!==(null==e?void 0:e.sideData)&&("object"!==typeof e.sideData||null===e.sideData))throw new TypeError("options.sideData, when provided, must be an object.");return new nr(null!=(t=null==e?void 0:e.data)?t:this.data,null!=(i=null==e?void 0:e.type)?i:this.type,null!=(r=null==e?void 0:e.timestamp)?r:this.timestamp,null!=(n=null==e?void 0:e.duration)?n:this.duration,null!=(s=null==e?void 0:e.sequenceNumber)?s:this.sequenceNumber,this.byteLength,null!=(a=null==e?void 0:e.sideData)?a:this.sideData)}}const sr=e=>{const t=J(e);let i=0;const r=t.getUint8(i);i+=1,i+=3;const n=he(e.subarray(i,i+16));i+=16;let s=null;if(r>0){const r=t.getUint32(i);if(i+=4,r>0){s=[];for(let t=0;te.systemId===t.systemId&&((e,t)=>{if(e.length!==t.length)return!1;for(let i=0;i{let t=dl(e);const i=Tl(e,4);let r=8;1===t&&(t=pl(e),r=16);const n=t-r;return n<0?null:{name:i,totalSize:t,headerSize:r,contentSize:n}},lr=e=>fl(e)/65536,cr=e=>fl(e)/1073741824,ur=e=>{let t=0;for(let i=0;i<4;i++){t<<=7;const i=sl(e);if(t|=127&i,0===(128&i))break}return t},dr=e=>{let t=ol(e);return e.skip(2),t=Math.min(t,e.remainingLength),Z.decode(nl(e,t))},hr=e=>{const t=or(e);if(!t||"data"!==t.name)return null;if(e.remainingLength<8)return null;const i=dl(e);e.skip(4);const r=nl(e,t.contentSize-8);switch(i){case 1:return Z.decode(r);case 2:return new TextDecoder("utf-16be").decode(r);case 13:return new ct(r,"image/jpeg");case 14:return new ct(r,"image/png");case 27:return new ct(r,"image/bmp");default:return r}},fr=16,mr=new Uint32Array(256),pr=new Uint32Array(256),gr=new Uint32Array(256),kr=new Uint32Array(256),yr=new Uint32Array(256),br=new Uint32Array(256),Tr=new Uint32Array(10);let vr=!1;class Sr{constructor(){this.roundkey=new Uint32Array(44),this.iv=new Uint32Array(fr/Uint32Array.BYTES_PER_ELEMENT),this.in=new Uint8Array(fr),this.out=new Uint8Array(fr),this.inView=new DataView(this.in.buffer),this.outView=new DataView(this.out.buffer)}init({key:e,iv:t}){j(16===e.byteLength),j(16===t.byteLength),vr||(()=>{const e=new Uint8Array(256),t=new Uint8Array(256),i=new Uint8Array(256);for(let s=0,a=1;s<256;s++)i[s]=a,t[a]=s,a=a^a<<1^(128&a?283:0);const r=(e,r)=>e&&r?i[(t[e]+t[r])%255]:0;e[0]=99;for(let s=1;s<256;s++){const r=i[255-t[s]];let n=r^r<<1^r<<2^r<<3^r<<4;n=n>>>8^255&n^99,e[s]=n}for(let s=0;s<256;s++){const t=e[s],i=e.indexOf(s);mr[s]=t<<24|t<<16|t<<8|t,br[s]=i<<24|i<<16|i<<8|i;const n=r(i,14)<<24|r(i,9)<<16|r(i,13)<<8|r(i,11);pr[s]=n,gr[s]=n>>>8|n<<24,kr[s]=n>>>16|n<<16,yr[s]=n>>>24|n<<8}let n=1;for(let s=0;s<10;s++)Tr[s]=n<<24,n=n<<1^(128&n?283:0);vr=!0})();const i=new DataView(e.buffer,e.byteOffset,e.byteLength),r=new DataView(t.buffer,t.byteOffset,t.byteLength);this.roundkey[0]=i.getUint32(0,!1),this.roundkey[1]=i.getUint32(4,!1),this.roundkey[2]=i.getUint32(8,!1),this.roundkey[3]=i.getUint32(12,!1),this.iv[0]=r.getUint32(0,!1),this.iv[1]=r.getUint32(4,!1),this.iv[2]=r.getUint32(8,!1),this.iv[3]=r.getUint32(12,!1);for(let n=4;n<44;n+=4){const e=this.roundkey[n-1];this.roundkey[n]=this.roundkey[n-4]^4278190080&mr[e>>>16&255]^16711680&mr[e>>>8&255]^65280&mr[e>>>0&255]^255&mr[e>>>24&255]^Tr[n/4-1],this.roundkey[n+1]=this.roundkey[n-3]^this.roundkey[n],this.roundkey[n+2]=this.roundkey[n-2]^this.roundkey[n+1],this.roundkey[n+3]=this.roundkey[n-1]^this.roundkey[n+2]}for(let n=0,s=40;n>>24&255]]^gr[255&mr[t>>>16&255]]^kr[255&mr[t>>>8&255]]^yr[255&mr[t>>>0&255]]}}decrypt(){let e=this.inView.getUint32(0,!1)^this.roundkey[0],t=this.inView.getUint32(4,!1)^this.roundkey[1],i=this.inView.getUint32(8,!1)^this.roundkey[2],r=this.inView.getUint32(12,!1)^this.roundkey[3];const n=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),a=this.inView.getUint32(8,!1),o=this.inView.getUint32(12,!1);let l,c,u,d;for(let g=1;g<10;g++){const n=4*g;l=pr[e>>>24]^gr[r>>>16&255]^kr[i>>>8&255]^yr[255&t]^this.roundkey[n],c=pr[t>>>24]^gr[e>>>16&255]^kr[r>>>8&255]^yr[255&i]^this.roundkey[n+1],u=pr[i>>>24]^gr[t>>>16&255]^kr[e>>>8&255]^yr[255&r]^this.roundkey[n+2],d=pr[r>>>24]^gr[i>>>16&255]^kr[t>>>8&255]^yr[255&e]^this.roundkey[n+3],e=l,t=c,i=u,r=d}const h=4278190080&br[e>>>24&255]^16711680&br[r>>>16&255]^65280&br[i>>>8&255]^255&br[t>>>0&255]^this.roundkey[40],f=4278190080&br[t>>>24&255]^16711680&br[e>>>16&255]^65280&br[r>>>8&255]^255&br[i>>>0&255]^this.roundkey[41],m=4278190080&br[i>>>24&255]^16711680&br[t>>>16&255]^65280&br[e>>>8&255]^255&br[r>>>0&255]^this.roundkey[42],p=4278190080&br[r>>>24&255]^16711680&br[i>>>16&255]^65280&br[t>>>8&255]^255&br[e>>>0&255]^this.roundkey[43];this.outView.setUint32(0,h^this.iv[0],!1),this.outView.setUint32(4,f^this.iv[1],!1),this.outView.setUint32(8,m^this.iv[2],!1),this.outView.setUint32(12,p^this.iv[3],!1),this.iv[0]=n,this.iv[1]=s,this.iv[2]=a,this.iv[3]=o}}class wr extends ir{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.psshBoxes=[],this.currentFragment=null,this.lastReadFragment=null,this.decryptionKeyCache=new Map,this.reader=e._reader}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.tracks.map(e=>e.trackBacking)})}getMimeType(){return z(this,null,function*(){yield this.readMetadata();const e=yield this.getTrackBackings(),t=yield Promise.all(e.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)}),hasAudio:this.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)}),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return z(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){let e=0,t=!1,i=!1;for(;;){let r=this.reader.requestSliceRange(e,8,16);if(Xe(r)&&(r=yield r),!r)break;const n=e,s=or(r);if(!s)break;if("ftyp"===s.name||"styp"===s.name){const e=Tl(r,4);this.isQuickTime="qt "===e}else{if("moov"===s.name){let e=this.reader.requestSlice(r.filePos,s.contentSize);if(Xe(e)&&(e=yield e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice);for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}t=this.isFragmented&&null!==this.reader.fileSize&&this.reader.fileSize>n+s.totalSize,i=!0;break}if("moof"===s.name){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');yield this.copyMetadataFromInitInput(this.input._initInput),t=!1,i=!0;break}}e=n+s.totalSize}if(!i&&this.input._initInput&&(yield this.copyMetadataFromInitInput(this.input._initInput)),t){j(null!==this.reader.fileSize);let e=this.reader.requestSlice(this.reader.fileSize-4,4);Xe(e)&&(e=yield e),j(e);const t=dl(e),i=this.reader.fileSize-t;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(Xe(e)&&(e=yield e),e){const t=or(e);if(t&&"mfra"===t.name){let i=this.reader.requestSlice(e.filePos,t.contentSize);Xe(i)&&(i=yield i),i&&this.readContiguousBoxes(i)}}}}}))()}copyMetadataFromInitInput(e){return z(this,null,function*(){const t=yield e._getDemuxer();if(t.constructor!==wr)throw new Error("Init input must match the input's format.");yield t.readMetadata(),this.movieTimescale=t.movieTimescale,this.movieDurationInTimescale=t.movieDurationInTimescale,this.metadataTags=t.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=t.fragmentTrackDefaults,this.psshBoxes=t.psshBoxes;for(const e of t.tracks){const t={id:e.id,demuxer:this,trackBacking:null,disposition:e.disposition,timescale:e.timescale,durationInMediaTimescale:e.durationInMediaTimescale,durationInMovieTimescale:e.durationInMovieTimescale,rotation:e.rotation,internalCodecId:e.internalCodecId,name:e.name,languageCode:e.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:e.editListPreviousSegmentDurations,editListOffset:e.editListOffset,encryptionInfo:e.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:e.info};if(e.trackBacking)if(j(t.info),"video"===t.info.type&&-1!==t.info.width){const e=t;t.trackBacking=new Ir(e),this.tracks.push(t)}else if("audio"===t.info.type&&-1!==t.info.numberOfChannels){const e=t;t.trackBacking=new xr(e),this.tracks.push(t)}}})}getSampleTableForTrack(e){var t,i;if(e.sampleTable)return e.sampleTable;const r={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=r,null===e.sampleTableByteOffset)return r;j(this.moovSlice);const n=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(n),this.currentTrack=null;if("audio"===(null==(t=e.info)?void 0:t.type)&&e.info.codec&&Ri.includes(e.info.codec)&&0===r.sampleCompositionTimeOffsets.length){j("audio"===(null==(i=e.info)?void 0:i.type));const t=Vi(e.info.codec),n=[],s=[];for(let i=0;ie.startIndex),u=r.sampleTimingEntries[c],d=pe(r.sampleTimingEntries,l,e=>e.startIndex),h=r.sampleTimingEntries[d],f=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,m=h.startDecodeTimestamp+(l-h.startIndex)*h.delta-f,p=X(n);p&&p.delta===m?p.count++:n.push({startIndex:a.startChunkIndex+i,startDecodeTimestamp:f,count:1,delta:m});const g=a.samplesPerChunk*t.sampleSize*e.info.numberOfChannels;s.push(g)}a.startSampleIndex=a.startChunkIndex,a.samplesPerChunk=1}r.sampleTimingEntries=n,r.sampleSizes=s}if(r.sampleCompositionTimeOffsets.length>0){r.presentationTimestamps=[];for(const e of r.sampleTimingEntries)for(let t=0;te.presentationTimestamp-t.presentationTimestamp),r.presentationTimestampIndexMap=Array(r.presentationTimestamps.length).fill(-1);for(let e=0;ee.moofOffset===s.moofOffset);if(r)Rr(e,r.timestamp);else{const t=pe(i,s.moofOffset-1,e=>e.moofOffset);if(-1!==t){const r=i[t];Rr(e,r.endTimestamp)}}e.startTimestampIsFinal=!0}const r=pe(i,e.startTimestamp,e=>e.startTimestamp);if(-1!==r&&i[r].moofOffset===s.moofOffset||i.splice(r+1,0,{moofOffset:s.moofOffset,startTimestamp:e.startTimestamp,endTimestamp:e.endTimestamp}),e.encryptionAuxInfo&&t.encryptionInfo){const i=yield Mr(this.reader,t.encryptionInfo,e.encryptionAuxInfo);for(let t=0;t0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;Ae(t.languageCode)||(t.languageCode=xe)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=Tl(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:_({},le),avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=fe,this.readContiguousBoxes(e.slice(pe,me.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const i=sl(e);e.skip(3);const r=dl(e);for(let n=0;n0&&(1===a?(e.skip(4),l=8*dl(e),e.skip(8)):2===a&&(e.skip(4),c=bl(e),o=dl(e),e.skip(4),l=dl(e),u=dl(e),e.skip(8))),t.info.numberOfChannels=o,t.info.sampleRate=c,t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+n.totalSize-e.filePos));const d="enca"===s?t.frmaCodecString:s;if(t.frmaCodecString=null,"mp4a"===d);else if("opus"===d)t.info.codec="opus",t.info.sampleRate=Wi;else if("flac"===d)t.info.codec="flac";else if("ulaw"===d)t.info.codec="ulaw";else if("alaw"===d)t.info.codec="alaw";else if("ac-3"===d)t.info.codec="ac3";else if("ec-3"===d)t.info.codec="eac3";else if(zi.includes(d))t.info.codec="dts",t.info.dtsFormat=d;else if("twos"===d)8===l?t.info.codec="pcm-s8":16===l?t.info.codec=t.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(lt._warn(`Unsupported sample size ${l} for codec 'twos'.`),t.info.codec=null);else if("sowt"===d)8===l?t.info.codec="pcm-s8":16===l?t.info.codec="pcm-s16":(lt._warn(`Unsupported sample size ${l} for codec 'sowt'.`),t.info.codec=null);else if("raw "===d)t.info.codec="pcm-u8";else if("in24"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if("in32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if("fl32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if("fl64"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if("ipcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?16===e?t.info.codec="pcm-s16":24===e?t.info.codec="pcm-s24":32===e?t.info.codec="pcm-s32":(lt._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null):16===e?t.info.codec="pcm-s16be":24===e?t.info.codec="pcm-s24be":32===e?t.info.codec="pcm-s32be":(lt._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null)}else if("fpcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?32===e?t.info.codec="pcm-f32":64===e?t.info.codec="pcm-f64":(lt._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null):32===e?t.info.codec="pcm-f32be":64===e?t.info.codec="pcm-f64be":(lt._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=l+7>>3,i=Boolean(1&u),r=Boolean(2&u),n=4&u?-1:0;l>0&&l<=64&&(i?32===l&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):n&1<0?(t.encryptionInfo.defaultCryptByteBlock=r>>4,t.encryptionInfo.defaultSkipByteBlock=15&r):(t.encryptionInfo.defaultCryptByteBlock=0,t.encryptionInfo.defaultSkipByteBlock=0),t.encryptionInfo.defaultIsProtected=0!==sl(e),t.encryptionInfo.defaultPerSampleIvSize=sl(e),t.encryptionInfo.defaultKid=he(nl(e,16)),t.encryptionInfo.defaultIsProtected&&0===t.encryptionInfo.defaultPerSampleIvSize){const i=sl(e),r=new Uint8Array(16);r.set(nl(e,i),0),t.encryptionInfo.defaultConstantIv=r}}break;case"avcC":{const t=this.currentTrack;if(!t)break;if(j(t.info),0===me.contentSize)break;t.info.codecDescription=nl(e,me.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;if(j(t.info),0===me.contentSize)break;t.info.codecDescription=nl(e,me.contentSize)}break;case"vpcC":{const i=this.currentTrack;if(!i)break;j("video"===(null==(t=i.info)?void 0:t.type)),e.skip(4);const r=sl(e),n=sl(e),s=sl(e),a=s>>4,o=s>>1&7,l=1&s,c=sl(e),u=sl(e),d=sl(e);i.info.vp9CodecInfo={profile:r,level:n,bitDepth:a,chromaSubsampling:o,videoFullRangeFlag:l,colourPrimaries:c,transferCharacteristics:u,matrixCoefficients:d}}break;case"av1C":{const t=this.currentTrack;if(!t)break;j("video"===(null==(i=t.info)?void 0:i.type)),e.skip(1);const o=sl(e),l=o>>5,c=31&o,u=sl(e),d=u>>7,h=u>>6&1,f=u>>4&1,m=u>>3&1,p=u>>2&1,g=3&u,k=2===l&&h?u>>5&1?12:10:h?10:8;e.skip(1);const y=nl(e,me.contentSize-4),b=ii(y);t.info.av1CodecInfo={profile:l,level:c,tier:d,bitDepth:k,monochrome:f,chromaSubsamplingX:m,chromaSubsamplingY:p,chromaSamplePosition:g,videoFullRangeFlag:null!=(r=null==b?void 0:b.videoFullRangeFlag)?r:0,colourPrimaries:null!=(n=null==b?void 0:b.colourPrimaries)?n:2,transferCharacteristics:null!=(s=null==b?void 0:b.transferCharacteristics)?s:2,matrixCoefficients:null!=(a=null==b?void 0:b.matrixCoefficients)?a:2}}break;case"colr":{const t=this.currentTrack;if(!t)break;j("video"===(null==(o=t.info)?void 0:o.type));const i=Tl(e,4);if("nclx"!==i&&"nclc"!==i)break;const r=ol(e),n=ol(e),s=ol(e);let a;"nclx"===i&&(a=Boolean(128&sl(e))),t.info.colorSpace={primaries:ie[r],transfer:ne[n],matrix:ae[s],fullRange:a}}break;case"pasp":{const t=this.currentTrack;if(!t)break;j("video"===(null==(l=t.info)?void 0:l.type));const i=dl(e),r=dl(e);i>0&&r>0&&(i>r?t.info.squarePixelWidth=Math.round(t.info.width*i/r):t.info.squarePixelHeight=Math.round(t.info.height*r/i))}break;case"esds":{const t=this.currentTrack;if(!t||"audio"!==(null==(c=t.info)?void 0:c.type))break;e.skip(4);j(3===sl(e)),ur(e),e.skip(2);const i=sl(e),r=0!==(64&i),n=0!==(32&i);if(0!==(128&i)&&e.skip(2),r){const t=sl(e);e.skip(t)}n&&e.skip(2);j(4===sl(e));const s=ur(e),a=e.filePos,o=sl(e);if(64===o||103===o?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===o,objectType:null}):105===o||107===o?t.info.codec="mp3":221===o?t.info.codec="vorbis":169===o?t.info.codec="dts":lt._warn(`Unsupported audio codec (objectTypeIndication ${o}) - discarding track.`),e.skip(12),s>e.filePos-a){j(5===sl(e));const i=ur(e);if(t.info.codecDescription=nl(e,i),"aac"===t.info.codec){const e=pt(t.info.codecDescription);null!==e.outputNumberOfChannels&&(t.info.numberOfChannels=e.outputNumberOfChannels),null!==e.outputSampleRate&&(t.info.sampleRate=e.outputSampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(u=t.info)?void 0:u.type)),t.info.pcmLittleEndian=!!(255&ol(e))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(d=t.info)?void 0:d.type)),e.skip(4);const i=sl(e);t.info.pcmLittleEndian=Boolean(1&i),t.info.pcmSampleSize=sl(e)}break;case"dOps":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(h=t.info)?void 0:h.type)),e.skip(1);const i=sl(e),r=ol(e),n=dl(e),s=cl(e),a=sl(e);let o;o=0!==a?nl(e,2+i):new Uint8Array(0);const l=new Uint8Array(19+o.byteLength),c=new DataView(l.buffer);c.setUint32(0,1332770163,!1),c.setUint32(4,1214603620,!1),c.setUint8(8,1),c.setUint8(9,i),c.setUint16(10,r,!0),c.setUint32(12,n,!0),c.setInt16(16,s,!0),c.setUint8(18,a),l.set(o,19),t.info.codecDescription=l,t.info.numberOfChannels=i}break;case"dfLa":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(f=t.info)?void 0:f.type)),e.skip(4);const i=127,r=128,n=e.filePos;for(;e.filePos>>12,n=1+(i>>9&7);t.info.sampleRate=r,t.info.numberOfChannels=n,e.skip(20)}else e.skip(s);if(n&r)break}const s=e.filePos;e.filePos=n;const a=nl(e,s-n),o=new Uint8Array(4+a.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(a,4),t.info.codecDescription=o}break;case"dac3":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(m=t.info)?void 0:m.type));const i=nl(e,3),r=new ht(i),n=r.readBits(2);r.skipBits(8);const s=r.readBits(3),a=r.readBits(1);n<3&&(t.info.sampleRate=yt[n]),t.info.numberOfChannels=ui[s]+a}break;case"dec3":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(p=t.info)?void 0:p.type));const i=(e=>{if(e.length<2)return null;const t=new ht(e),i=t.readBits(13),r=t.readBits(3),n=[];for(let s=0;s<=r&&!(Math.ceil(t.pos/8)+3>e.length);s++){const e=t.readBits(2),i=t.readBits(5);t.skipBits(1),t.skipBits(1);const r=t.readBits(3),s=t.readBits(3),a=t.readBits(1);t.skipBits(3);const o=t.readBits(4);let l=0;o>0?l=t.readBits(9):t.skipBits(1),n.push({fscod:e,fscod2:null,bsid:i,bsmod:r,acmod:s,lfeon:a,numDepSub:o,chanLoc:l})}return 0===n.length?null:{dataRate:i,substreams:n}})(nl(e,me.contentSize));if(!i){lt._warn("Invalid dec3 box contents, ignoring.");break}const r=pi(i);null!==r&&(t.info.sampleRate=r),t.info.numberOfChannels=gi(i)}break;case"ddts":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(g=t.info)?void 0:g.type));const i=(e=>{if(e.length<20)return null;const t=J(e),i=t.getUint32(0);if(0===i)return null;const r=new ht(e);r.seekToByte(13);const n=r.readBits(2);r.skipBits(5);const s=r.readBits(1),a=r.readBits(6);r.skipBits(14),r.skipBits(1),r.skipBits(3);const o=r.readBits(16);let l=null;return 0!==o?l=Ei(o):ae.id===i);if(!r)break;const n=dl(e),s=(12&n)>>2,a=3&n,o=[sl,ol,ll,dl],l=o[(48&n)>>4],c=o[s],u=o[a],d=dl(e);for(let h=0;he.timestamp-t.timestamp);for(let e=0;e({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let n=0;ne.id===c);if(!u)break;const d=this.fragmentTrackDefaults.find(e=>e.trackId===c);this.currentTrack=u,u.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:null!=(y=null==d?void 0:d.defaultSampleDescriptionIndex)?y:null,defaultSampleDuration:null!=(b=null==d?void 0:d.defaultSampleDuration)?b:null,defaultSampleSize:null!=(T=null==d?void 0:d.defaultSampleSize)?T:null,defaultSampleFlags:null!=(v=null==d?void 0:d.defaultSampleFlags)?v:null,startTimestamp:null,encryptionAuxInfo:null},i?u.currentFragmentState.baseDataOffset=pl(e):l&&(u.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),r&&(u.currentFragmentState.sampleDescriptionIndex=dl(e)),n&&(u.currentFragmentState.defaultSampleDuration=dl(e)),s&&(u.currentFragmentState.defaultSampleSize=dl(e)),a&&(u.currentFragmentState.defaultSampleFlags=dl(e)),o&&(u.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;j(t.currentFragmentState);const i=sl(e);e.skip(3);const r=0===i?dl(e):pl(e);t.currentFragmentState.startTimestamp=r}break;case"trun":{const t=this.currentTrack;if(!t)break;j(this.currentFragment),j(t.currentFragmentState);const i=sl(e),r=ll(e),n=Boolean(1&r),s=Boolean(4&r),a=Boolean(256&r),o=Boolean(512&r),l=Boolean(1024&r),c=Boolean(2048&r),u=dl(e);let d=null;n&&(d=fl(e));let h,f=null;s&&(f=dl(e)),this.currentFragment.trackData.has(t.id)?(h=this.currentFragment.trackData.get(t.id),null!==d&&(h.currentOffset=t.currentFragmentState.baseDataOffset+d)):(h={track:t,currentTimestamp:0,currentOffset:t.currentFragmentState.baseDataOffset+(null!=d?d:0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(t.id,h));for(let m=0;m0&&(n=nl(e,r));const s=Dr(t);s.defaultSampleInfoSize=i,s.sampleSizes=n,s.sampleCount=r}break;case"saio":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=sl(e);if(1&ll(e)){const i=Tl(e,4),r=dl(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const r=dl(e);if(0===r)break;r>1&<._warn("Multiple saio entries are not supported; using the first offset only.");let n=0===i?dl(e):Number(pl(e));this.currentFragment&&(n+=this.currentFragment.moofOffset);Dr(t).offset=n}break;case"senc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;j(this.currentFragment);const i=this.currentFragment.trackData.get(t.id);if(!i)break;e.skip(1);const r=ll(e),n=Boolean(2&r),s=dl(e),a=t.encryptionInfo.defaultPerSampleIvSize;j(null!==a);for(let o=0;o0?r.set(nl(e,a),0):r.set(t.encryptionInfo.defaultConstantIv,0);let s=null;if(n){const t=ol(e);s=[];for(let i=0;i0&&(null!=(re=this.metadataTags).trackNumber||(re.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=(se=this.metadataTags).tracksTotal||(se.tracksTotal=i))}break;case"trkn":if(n instanceof Uint8Array&&n.length>=6){const e=J(n),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&(null!=(oe=this.metadataTags).trackNumber||(oe.trackNumber=t)),i>0&&(null!=(ce=this.metadataTags).tracksTotal||(ce.tracksTotal=i))}break;case"disc":case"disk":if(n instanceof Uint8Array&&n.length>=6){const e=J(n),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&(null!=(ue=this.metadataTags).discNumber||(ue.discNumber=t)),i>0&&(null!=(de=this.metadataTags).discsTotal||(de.discsTotal=i))}}}}}return e.filePos=ge,!0}}class Pr{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.tracks)if(r.trackBacking.getType()===t&&i++,r===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){var e;const t=this.internalTrack;if(t.durationInMediaTimescale<=0)return null;j(t.trackBacking);const i=yield t.trackBacking.getFirstPacket({metadataOnly:!0});return(null!=(e=null==i?void 0:i.timestamp)?e:0)+t.durationInMediaTimescale/t.timescale})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getFirstPacket(e){return z(this,null,function*(){const t=yield this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)})}mapTimestampIntoTimescale(e){return Ce(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}getPacket(e,t){return z(this,null,function*(){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=Cr(r,i),s=yield this.fetchPacketForSampleIndex(n,t);return Ar(r)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=pe(t.presentationTimestamps,i,e=>e.presentationTimestamp);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=Te(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=i);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>r.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.samples.findIndex(e=>e.isKeyFrame);return j(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)})}fetchPacketForSampleIndex(e,t){return z(this,null,function*(){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=Er(i,e);if(!r)return null;let n;if(t.metadataOnly)n=rr;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.sampleOffset,r.sampleSize);if(Xe(t)&&(t=yield t),!t)return null;if(n=nl(t,r.sampleSize),this.internalTrack.encryptionInfo){let t=null;if(this.internalTrack.encryptionAuxInfo){const i=yield Mr(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);ee.timestamp),f=-1!==h?this.internalTrack.fragmentLookupTable[h]:null,m=pe(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),p=-1!==m?this.internalTrack.fragmentPositionCache[m]:null,g=Math.max(null!=(s=null==f?void 0:f.moofOffset)?s:0,null!=(a=null==p?void 0:p.moofOffset)?a:0)||null;let k;for(e?null===g||e.moofOffset>=g?(k=e.moofOffset+e.moofSize,c=e):k=g:k=null!=g?g:0;;){if(c){const e=c.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=l.reader.requestSliceRange(k,8,16);if(Xe(e)&&(e=yield e),!e)break;const i=k,s=or(e);if(!s)break;if("moof"===s.name){c=yield l.readFragment(i);const{sampleIndex:e,correctSampleFound:r}=t(c);if(r)return this.fetchPacketInFragment(c,e,n);-1!==e&&(u=c,d=e)}k=i+s.totalSize}if(f&&(!u||u.moofOffsetz(this,null,function*(){var e,t,i,r,n,s,a;if("avc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("hevc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo&&(2!==(a=this.internalTrack.info.vp9CodecInfo).colourPrimaries||2!==a.transferCharacteristics||2!==a.matrixCoefficients))if("av1"!==this.internalTrack.info.codec||this.internalTrack.info.av1CodecInfo&&(e=>2!==e.colourPrimaries||2!==e.transferCharacteristics||2!==e.matrixCoefficients)(this.internalTrack.info.av1CodecInfo)){if("prores"===this.internalTrack.info.codec&&!this.internalTrack.info.proresCodecInfo){const e=yield this.getFirstPacket({});this.internalTrack.info.proresCodecInfo=e&&ri(e.data)}}else{const e=yield this.getFirstPacket({}),t=e&&ii(e.data);t&&(this.internalTrack.info.av1CodecInfo=t)}else{const t=yield this.getFirstPacket({}),i=t&&ei(t.data);i&&(this.internalTrack.info.vp9CodecInfo=R(_({},null!=(e=this.internalTrack.info.vp9CodecInfo)?e:i),{videoFullRangeFlag:i.videoFullRangeFlag,colourPrimaries:i.colourPrimaries,transferCharacteristics:i.transferCharacteristics,matrixCoefficients:i.matrixCoefficients}))}else{const e=yield this.getFirstPacket({});this.internalTrack.info.hevcCodecInfo=e&&Wt(e.data)}else{const e=yield this.getFirstPacket({});this.internalTrack.info.avcCodecInfo=e&&Ft(e.data)}if(!oe(this.internalTrack.info.colorSpace)){const e=Ui(this.internalTrack.info);null!=(t=this.internalTrack.info.colorSpace).primaries||(t.primaries=e.primaries),null!=(i=this.internalTrack.info.colorSpace).transfer||(i.transfer=e.transfer),null!=(r=this.internalTrack.info.colorSpace).matrix||(r.matrix=e.matrix),null!=(n=this.internalTrack.info.colorSpace).fullRange||(n.fullRange=e.fullRange)}const o={codec:Li(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(s=this.internalTrack.info.codecDescription)?s:void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(o.displayAspectWidth=this.internalTrack.info.squarePixelWidth,o.displayAspectHeight=this.internalTrack.info.squarePixelHeight),o}))():null})}}class xr extends Pr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return z(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>z(this,null,function*(){var e;if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=yield this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&xi(e.data)}return{codec:qi(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}}))():null})}}const Cr=(e,t)=>{if(e.presentationTimestamps){const i=pe(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===i?-1:e.presentationTimestamps[i].sampleIndex}{const i=pe(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===i)return-1;const r=e.sampleTimingEntries[i];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},Br=(e,t)=>{var i;if(!e.keySampleIndices)return Cr(e,t);if(e.presentationTimestamps){const i=pe(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===i)return-1;for(let t=i;t>=0;t--){const i=e.presentationTimestamps[t].sampleIndex;if(-1!==me(e.keySampleIndices,i,e=>e))return i}return-1}{const r=Cr(e,t),n=pe(e.keySampleIndices,r,e=>e);return null!=(i=e.keySampleIndices[n])?i:-1}},Er=(e,t)=>{const i=pe(e.sampleTimingEntries,t,e=>e.startIndex),r=e.sampleTimingEntries[i];if(!r||r.startIndex+r.count<=t)return null;let n=r.startDecodeTimestamp+(t-r.startIndex)*r.delta;const s=pe(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),a=e.sampleCompositionTimeOffsets[s];a&&t-a.startIndexe.startSampleIndex),c=e.sampleToChunk[l];j(c);const u=c.startChunkIndex+Math.floor((t-c.startSampleIndex)/c.samplesPerChunk),d=e.chunkOffsets[u],h=c.startSampleIndex+(u-c.startChunkIndex)*c.samplesPerChunk;let f=0,m=d;if(1===e.sampleSizes.length)m+=o*(t-h),f+=o*c.samplesPerChunk;else for(let g=h;ge)}},_r=(e,t)=>{var i;if(!e.keySampleIndices)return t+1;const r=pe(e.keySampleIndices,t,e=>e);return null!=(i=e.keySampleIndices[r+1])?i:-1},Rr=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const i of e.samples)i.presentationTimestamp+=t;for(const i of e.presentationTimestamps)i.presentationTimestamp+=t},Fr=e=>{const[t,i]=e,r=Math.atan2(i,t);return Number.isFinite(r)?r*(180/Math.PI):0},Ar=e=>0===e.sampleSizes.length,Dr=e=>{var t,i,r;return e.currentFragmentState?null!=(i=(t=e.currentFragmentState).encryptionAuxInfo)?i:t.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}:null!=(r=e.encryptionAuxInfo)?r:e.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}},Mr=(e,t,i)=>z(null,null,function*(){if(i.resolved)return i.resolved;if(null===i.offset||0===i.sampleCount)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(i.defaultSampleInfoSize>0)r=i.defaultSampleInfoSize*i.sampleCount;else{j(i.sampleSizes);for(let e=0;e0?i.defaultSampleInfoSize:i.sampleSizes[e],o=new Uint8Array(16);s>0?o.set(nl(n,s),0):o.set(t.defaultConstantIv,0);let l=null;if(r>s){const e=ol(n);l=[];for(let t=0;te.defaultConstantIv?{iv:e.defaultConstantIv,subsamples:null}:null,Or=(e,t,i,r)=>z(null,null,function*(){var n;j(e.encryptionInfo);const s=e.encryptionInfo;j(null!==s.defaultKid);const a=s.defaultKid;let o;const l=e.demuxer.decryptionKeyCache.get(a);if(l)o=yield l;else{if(!(null==(n=e.demuxer.input._formatOptions.isobmff)?void 0:n.resolveKeyId))throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");const t=z(null,null,function*(){let t=e.demuxer.psshBoxes;if(r){t=[...t,...r.psshBoxes].filter(e=>null===e.keyIds||e.keyIds.includes(a));for(let e=0;e{j(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;iz(null,null,function*(){const n=new Uint8Array(16);n.set(i.iv,0);const s=yield crypto.subtle.importKey("raw",e,{name:"AES-CTR"},!1,["decrypt"]),a=e=>z(null,null,function*(){const t=yield crypto.subtle.decrypt({name:"AES-CTR",counter:n,length:64},s,e);return new Uint8Array(t)});if(!i.subsamples)return a(r);j(null!==t.defaultCryptByteBlock&&null!==t.defaultSkipByteBlock);const o=Ur(i.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock);let l=0;for(const e of o)for(const t of e.perSubsample)l+=t.length;const c=new Uint8Array(l);let u=0;for(const e of o)for(const t of e.perSubsample)c.set(r.subarray(t.offset,t.offset+t.length),u),u+=t.length;const d=yield a(c),h=new Uint8Array(r);let f=0;for(const e of o)for(const t of e.perSubsample)h.set(d.subarray(f,f+t.length),t.offset),f+=t.length;return h}),Lr=(e,t,i,r)=>{const n=new Sr;n.init({key:e,iv:i.iv});const s=t.defaultCryptByteBlock,a=t.defaultSkipByteBlock;if(j(null!==s&&null!==a),!i.subsamples){const e=new Uint8Array(r),t=Math.floor(r.length/16);for(let i=0;i{const r=[],n=0!==t||0!==i;let s=0;for(const a of e){s+=a.clearLen;const e=[];if(n){let r=a.protectedLen,n=s;for(;r>0&&!(r<16*t);){const s=16*t;e.push({offset:n,length:s}),n+=s,r-=s;const a=Math.min(16*i,r);n+=a,r-=a}s+=a.protectedLen}else a.protectedLen>0&&e.push({offset:s,length:a.protectedLen}),s+=a.protectedLen;r.push({perSubsample:e})}return r};var qr,Wr;(Wr=qr||(qr={}))[Wr.EBML=440786851]="EBML",Wr[Wr.EBMLVersion=17030]="EBMLVersion",Wr[Wr.EBMLReadVersion=17143]="EBMLReadVersion",Wr[Wr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",Wr[Wr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",Wr[Wr.DocType=17026]="DocType",Wr[Wr.DocTypeVersion=17031]="DocTypeVersion",Wr[Wr.DocTypeReadVersion=17029]="DocTypeReadVersion",Wr[Wr.Void=236]="Void",Wr[Wr.Segment=408125543]="Segment",Wr[Wr.SeekHead=290298740]="SeekHead",Wr[Wr.Seek=19899]="Seek",Wr[Wr.SeekID=21419]="SeekID",Wr[Wr.SeekPosition=21420]="SeekPosition",Wr[Wr.Duration=17545]="Duration",Wr[Wr.Info=357149030]="Info",Wr[Wr.TimestampScale=2807729]="TimestampScale",Wr[Wr.MuxingApp=19840]="MuxingApp",Wr[Wr.WritingApp=22337]="WritingApp",Wr[Wr.Tracks=374648427]="Tracks",Wr[Wr.TrackEntry=174]="TrackEntry",Wr[Wr.TrackNumber=215]="TrackNumber",Wr[Wr.TrackUID=29637]="TrackUID",Wr[Wr.TrackType=131]="TrackType",Wr[Wr.FlagEnabled=185]="FlagEnabled",Wr[Wr.FlagDefault=136]="FlagDefault",Wr[Wr.FlagForced=21930]="FlagForced",Wr[Wr.FlagOriginal=21934]="FlagOriginal",Wr[Wr.FlagHearingImpaired=21931]="FlagHearingImpaired",Wr[Wr.FlagVisualImpaired=21932]="FlagVisualImpaired",Wr[Wr.FlagCommentary=21935]="FlagCommentary",Wr[Wr.FlagLacing=156]="FlagLacing",Wr[Wr.Name=21358]="Name",Wr[Wr.Language=2274716]="Language",Wr[Wr.LanguageBCP47=2274717]="LanguageBCP47",Wr[Wr.CodecID=134]="CodecID",Wr[Wr.CodecPrivate=25506]="CodecPrivate",Wr[Wr.CodecDelay=22186]="CodecDelay",Wr[Wr.SeekPreRoll=22203]="SeekPreRoll",Wr[Wr.DefaultDuration=2352003]="DefaultDuration",Wr[Wr.Video=224]="Video",Wr[Wr.PixelWidth=176]="PixelWidth",Wr[Wr.PixelHeight=186]="PixelHeight",Wr[Wr.DisplayWidth=21680]="DisplayWidth",Wr[Wr.DisplayHeight=21690]="DisplayHeight",Wr[Wr.DisplayUnit=21682]="DisplayUnit",Wr[Wr.AlphaMode=21440]="AlphaMode",Wr[Wr.Audio=225]="Audio",Wr[Wr.SamplingFrequency=181]="SamplingFrequency",Wr[Wr.Channels=159]="Channels",Wr[Wr.BitDepth=25188]="BitDepth",Wr[Wr.SimpleBlock=163]="SimpleBlock",Wr[Wr.BlockGroup=160]="BlockGroup",Wr[Wr.Block=161]="Block",Wr[Wr.BlockAdditions=30113]="BlockAdditions",Wr[Wr.BlockMore=166]="BlockMore",Wr[Wr.BlockAdditional=165]="BlockAdditional",Wr[Wr.BlockAddID=238]="BlockAddID",Wr[Wr.BlockDuration=155]="BlockDuration",Wr[Wr.ReferenceBlock=251]="ReferenceBlock",Wr[Wr.Cluster=524531317]="Cluster",Wr[Wr.Timestamp=231]="Timestamp",Wr[Wr.Cues=475249515]="Cues",Wr[Wr.CuePoint=187]="CuePoint",Wr[Wr.CueTime=179]="CueTime",Wr[Wr.CueTrackPositions=183]="CueTrackPositions",Wr[Wr.CueTrack=247]="CueTrack",Wr[Wr.CueClusterPosition=241]="CueClusterPosition",Wr[Wr.Colour=21936]="Colour",Wr[Wr.MatrixCoefficients=21937]="MatrixCoefficients",Wr[Wr.TransferCharacteristics=21946]="TransferCharacteristics",Wr[Wr.Primaries=21947]="Primaries",Wr[Wr.Range=21945]="Range",Wr[Wr.Projection=30320]="Projection",Wr[Wr.ProjectionType=30321]="ProjectionType",Wr[Wr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",Wr[Wr.Attachments=423732329]="Attachments",Wr[Wr.AttachedFile=24999]="AttachedFile",Wr[Wr.FileDescription=18046]="FileDescription",Wr[Wr.FileName=18030]="FileName",Wr[Wr.FileMediaType=18016]="FileMediaType",Wr[Wr.FileData=18012]="FileData",Wr[Wr.FileUID=18094]="FileUID",Wr[Wr.Chapters=272869232]="Chapters",Wr[Wr.Tags=307544935]="Tags",Wr[Wr.Tag=29555]="Tag",Wr[Wr.Targets=25536]="Targets",Wr[Wr.TargetTypeValue=26826]="TargetTypeValue",Wr[Wr.TargetType=25546]="TargetType",Wr[Wr.TagTrackUID=25541]="TagTrackUID",Wr[Wr.TagEditionUID=25545]="TagEditionUID",Wr[Wr.TagChapterUID=25540]="TagChapterUID",Wr[Wr.TagAttachmentUID=25542]="TagAttachmentUID",Wr[Wr.SimpleTag=26568]="SimpleTag",Wr[Wr.TagName=17827]="TagName",Wr[Wr.TagLanguage=17530]="TagLanguage",Wr[Wr.TagString=17543]="TagString",Wr[Wr.TagBinary=17541]="TagBinary",Wr[Wr.ContentEncodings=28032]="ContentEncodings",Wr[Wr.ContentEncoding=25152]="ContentEncoding",Wr[Wr.ContentEncodingOrder=20529]="ContentEncodingOrder",Wr[Wr.ContentEncodingScope=20530]="ContentEncodingScope",Wr[Wr.ContentCompression=20532]="ContentCompression",Wr[Wr.ContentCompAlgo=16980]="ContentCompAlgo",Wr[Wr.ContentCompSettings=16981]="ContentCompSettings",Wr[Wr.ContentEncryption=20533]="ContentEncryption";const Hr=[qr.EBML,qr.Segment],Vr=[qr.SeekHead,qr.Info,qr.Cluster,qr.Tracks,qr.Cues,qr.Attachments,qr.Chapters,qr.Tags],jr=[...Hr,...Vr],Kr=16,Xr=e=>{if(e.remainingLength<1)return null;const t=sl(e);if(e.skip(-1),0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;return e.remainingLength{if(e.remainingLength<1)return null;const t=sl(e);if(0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;if(e.remainingLength{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r{const t=Xr(e);if(null===t)return null;if(e.remainingLength{if(e.remainingLength<1)return null;if(255===sl(e))return;e.skip(-1);const t=$r(e);return null===t?null:72057594037927940!==t?t:void 0},Jr=e=>{j(e.remainingLength>=2);const t=Qr(e);if(null===t)return null;const i=Yr(e);return null===i?null:{id:t,size:i}},Zr=(e,t)=>{const i=nl(e,t);let r=0;for(;r{const i=nl(e,t);let r=0;for(;r{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?yl(e):bl(e)},rn=(e,t,i,r)=>z(null,null,function*(){const n=new Set(i);let s=t;for(;null===r||ss?r:s,found:!1}}),nn=(e,t,i,r)=>z(null,null,function*(){const n=B(2,16),s=new Set(i);let a=t;for(;ae.tracks.map(e=>e.trackBacking))})}getMimeType(){return z(this,null,function*(){yield this.readMetadata();const e=yield this.getTrackBackings(),t=yield Promise.all(e.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)})),hasAudio:this.segments.some(e=>e.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)})),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return z(this,null,function*(){yield this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&(yield this.loadSegmentMetadata(t)),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e=_(_({},e),t.metadataTags);return e})}readMetadata(){var e;return null!=(e=this.readMetadataPromise)?e:this.readMetadataPromise=(()=>z(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,Kr);if(Xe(t)&&(t=yield t),!t)break;const i=Jr(t);if(!i)break;const r=i.id;let n=i.size;const s=t.filePos;if(r===qr.EBML){bn(n);let e=this.reader.requestSlice(s,n);if(Xe(e)&&(e=yield e),!e)break;this.readContiguousElements(e)}else if(r===qr.Segment){if(yield this.readSegment(s,n),void 0===n)break;if(null===this.reader.fileSize)break}else if(r===qr.Cluster){if(null===this.reader.fileSize)break;if(void 0===n){n=(yield rn(this.reader,s,jr,this.reader.fileSize)).pos-s}const e=X(this.segments);e&&(e.elementEndPos=s+n)}bn(n),e=s+n}}))()}readSegment(e,t){return z(this,null,function*(){var i;this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let r=e;for(;null===this.currentSegment.elementEndPos||re.id===s);if(-1!==l){const e=xn[l].flag;this.currentSegment[e]=!0,bn(a);let t=this.reader.requestSlice(o,a);Xe(t)&&(t=yield t),t&&this.readContiguousElements(t)}else if(s===qr.Tags||s===qr.Attachments){s===qr.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,bn(a);let e=this.reader.requestSlice(o,a);Xe(e)&&(e=yield e),e&&this.readContiguousElements(e)}else if(s===qr.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===a)break;r=o+a}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const t of this.currentSegment.seekEntries){const i=xn.find(e=>e.id===t.id);if(!i)continue;if(this.currentSegment[i.flag])continue;let r=this.reader.requestSliceRange(e+t.segmentPosition,2,Kr);if(Xe(r)&&(r=yield r),!r)continue;const n=Jr(r);if(!n)continue;const{id:s,size:a}=n;if(s!==i.id)continue;bn(a),this.currentSegment[i.flag]=!0;let o=this.reader.requestSlice(r.filePos,a);Xe(o)&&(o=yield o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const e of this.currentSegment.tracks)null!==e.defaultDurationNs&&(e.defaultDuration=this.currentSegment.timestampFactor*e.defaultDurationNs/1e9);const n=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const e of this.currentSegment.cuePoints){const t=n.get(e.trackId);t&&t.cuePoints.push(e)}for(const e of this.currentSegment.tracks){e.cuePoints.sort((e,t)=>e.time-t.time);for(let t=0;ta&&(a=e.cuePoints.length,s=e);for(const e of this.currentSegment.tracks)0===e.cuePoints.length&&(e.cuePoints=s.cuePoints);this.currentSegment=null})}readCluster(e,t){return z(this,null,function*(){var i;if((null==(i=t.lastReadCluster)?void 0:i.elementStartPos)===e)return t.lastReadCluster;let r=this.reader.requestSliceRange(e,2,Kr);Xe(r)&&(r=yield r),j(r);const n=e,s=Jr(r);j(s);j(s.id===qr.Cluster);let a=s.size;const o=r.filePos;if(void 0===a){a=(yield rn(this.reader,o,jr,t.elementEndPos)).pos-o}let l=this.reader.requestSlice(o,a);Xe(l)&&(l=yield l);const c={segment:t,elementStartPos:n,elementEndPos:o+a,dataStartPos:o,timestamp:-1,trackData:new Map};if(this.currentCluster=c,l){const e=this.readContiguousElements(l,jr);c.elementEndPos=e}for(const[,e]of c.trackData){const t=e.track;j(e.blocks.length>0);let i=!1;for(let n=0;n({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let n=0;n({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const r=e.blocks[e.presentationTimestamps[0].blockIndex],s=e.blocks[X(e.presentationTimestamps).blockIndex];e.startTimestamp=r.timestamp,e.endTimestamp=s.timestamp+s.duration;const a=pe(t.clusterPositionCache,e.startTimestamp,e=>e.startTimestamp);-1!==a&&t.clusterPositionCache[a].elementStartPos===n||t.clusterPositionCache.splice(a+1,0,{elementStartPos:c.elementStartPos,startTimestamp:e.startTimestamp})}return t.lastReadCluster=c,c})}getTrackDataInCluster(e,t){let i=e.trackData.get(t);if(!i){const r=e.segment.tracks.find(e=>e.id===t);if(!r)return null;i={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,i)}return i}expandLacedBlocks(e,t){var i;for(let r=0;r=2;){const i=e.filePos;if(!this.traverseElement(e,t))return i}return e.filePos}traverseElement(e,t){var i,r,n,s,a,o,l,c,u,d,h,f,m,p,g,k,y,b,T,v,S,w,P,I,x,C,B,E,F,A,D,M,N,O,z,L,U,q,W,H,V,X,$,G,Q,Y,J,ee,te,re,se;const oe=Jr(e);if(!oe)return!1;if(t&&t.includes(oe.id))return!1;const{id:ce,size:ue}=oe,de=e.filePos;switch(bn(ue),ce){case qr.DocType:this.isWebM="webm"===Zr(e,ue);break;case qr.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(de,ue)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case qr.SeekID:{const t=null==(i=this.currentSegment)?void 0:i.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=Gr(e,ue)}break;case qr.SeekPosition:{const t=null==(r=this.currentSegment)?void 0:r.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=Gr(e,ue)}break;case qr.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=Gr(e,ue),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case qr.Duration:if(!this.currentSegment)break;this.currentSegment.duration=tn(e,ue);break;case qr.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:R(_({},dt),{primary:!1}),trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(de,ue)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>{var t;return"decompress"!==(null==(t=e.data)?void 0:t.type)||e.scope!==Sn.Block||e.data.algorithm!==Pn.HeaderStripping})&&(lt._warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,null!==this.currentTrack.info.displayWidth&&null!==this.currentTrack.info.displayHeight){const e=this.currentTrack.info.displayWidth*this.currentTrack.info.height,t=this.currentTrack.info.displayHeight*this.currentTrack.info.width;e>0&&t>0&&(e>t?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*e/t):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*t/e))}if(this.currentTrack.codecId===sn)this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(this.currentTrack.codecId===an)this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(t===on)this.currentTrack.info.codec="vp8";else if(t===ln)this.currentTrack.info.codec="vp9";else if(t===cn)this.currentTrack.info.codec="av1";else if(t===un){const e=this.currentTrack.codecPrivate?Z.decode(this.currentTrack.codecPrivate):"";Oi.includes(e)&&(this.currentTrack.info.codec="prores",this.currentTrack.info.proresFormat=e)}const e=this.currentTrack;this.currentTrack.trackBacking=new _n(e),this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type){t===dn?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===hn?this.currentTrack.info.codec="mp3":t===fn?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=Wi):t===mn?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===pn?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===gn?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===kn?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===yn?(this.currentTrack.info.codec="dts","A_DTS/EXPRESS"===this.currentTrack.codecId?this.currentTrack.info.dtsFormat="dtse":"A_DTS/LOSSLESS"===this.currentTrack.codecId&&(this.currentTrack.info.dtsFormat="dtsl")):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack;this.currentTrack.trackBacking=new Rn(e),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case qr.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=Gr(e,ue);break;case qr.TrackType:{if(!this.currentTrack)break;const t=Gr(e,ue);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:_({},le),alphaMode:!1,proresFormat:null}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null})}break;case qr.FlagEnabled:if(!this.currentTrack)break;Gr(e,ue)||(this.currentTrack=null);break;case qr.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!Gr(e,ue);break;case qr.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!Gr(e,ue);break;case qr.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!Gr(e,ue);break;case qr.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!Gr(e,ue);break;case qr.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!Gr(e,ue);break;case qr.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!Gr(e,ue);break;case qr.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=Zr(e,ue);break;case qr.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=nl(e,ue);break;case qr.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=Gr(e,ue);break;case qr.Name:if(!this.currentTrack)break;this.currentTrack.name=en(e,ue);break;case qr.Language:if(!this.currentTrack)break;if(this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=Zr(e,ue),Ae(this.currentTrack.languageCode)||(this.currentTrack.languageCode=xe);break;case qr.LanguageBCP47:{if(!this.currentTrack)break;const t=Zr(e,ue).split("-")[0];this.currentTrack.languageCode=t||xe,this.currentTrack.hasLanguageBcp47=!0}break;case qr.Video:if("video"!==(null==(s=null==(n=this.currentTrack)?void 0:n.info)?void 0:s.type))break;this.readContiguousElements(e.slice(de,ue));break;case qr.PixelWidth:if("video"!==(null==(o=null==(a=this.currentTrack)?void 0:a.info)?void 0:o.type))break;this.currentTrack.info.width=Gr(e,ue);break;case qr.PixelHeight:if("video"!==(null==(c=null==(l=this.currentTrack)?void 0:l.info)?void 0:c.type))break;this.currentTrack.info.height=Gr(e,ue);break;case qr.DisplayWidth:if("video"!==(null==(d=null==(u=this.currentTrack)?void 0:u.info)?void 0:d.type))break;this.currentTrack.info.displayWidth=Gr(e,ue);break;case qr.DisplayHeight:if("video"!==(null==(f=null==(h=this.currentTrack)?void 0:h.info)?void 0:f.type))break;this.currentTrack.info.displayHeight=Gr(e,ue);break;case qr.DisplayUnit:if("video"!==(null==(p=null==(m=this.currentTrack)?void 0:m.info)?void 0:p.type))break;this.currentTrack.info.displayUnit=Gr(e,ue);break;case qr.AlphaMode:if("video"!==(null==(k=null==(g=this.currentTrack)?void 0:g.info)?void 0:k.type))break;this.currentTrack.info.alphaMode=1===Gr(e,ue);break;case qr.Colour:if("video"!==(null==(b=null==(y=this.currentTrack)?void 0:y.info)?void 0:b.type))break;this.readContiguousElements(e.slice(de,ue));break;case qr.MatrixCoefficients:{if("video"!==(null==(v=null==(T=this.currentTrack)?void 0:T.info)?void 0:v.type))break;const t=Gr(e,ue),i=ae[t];this.currentTrack.info.colorSpace.matrix=i}break;case qr.Range:{if("video"!==(null==(w=null==(S=this.currentTrack)?void 0:S.info)?void 0:w.type))break;const t=Gr(e,ue);this.currentTrack.info.colorSpace.fullRange=1===t||2===t?2===t:void 0}break;case qr.TransferCharacteristics:{if("video"!==(null==(I=null==(P=this.currentTrack)?void 0:P.info)?void 0:I.type))break;const t=Gr(e,ue),i=ne[t];this.currentTrack.info.colorSpace.transfer=i}break;case qr.Primaries:{if("video"!==(null==(C=null==(x=this.currentTrack)?void 0:x.info)?void 0:C.type))break;const t=Gr(e,ue),i=ie[t];this.currentTrack.info.colorSpace.primaries=i}break;case qr.Projection:if("video"!==(null==(E=null==(B=this.currentTrack)?void 0:B.info)?void 0:E.type))break;this.readContiguousElements(e.slice(de,ue));break;case qr.ProjectionPoseRoll:{if("video"!==(null==(A=null==(F=this.currentTrack)?void 0:F.info)?void 0:A.type))break;const t=-tn(e,ue);try{this.currentTrack.info.rotation=K(t)}catch(he){}}break;case qr.Audio:if("audio"!==(null==(M=null==(D=this.currentTrack)?void 0:D.info)?void 0:M.type))break;this.readContiguousElements(e.slice(de,ue));break;case qr.SamplingFrequency:if("audio"!==(null==(O=null==(N=this.currentTrack)?void 0:N.info)?void 0:O.type))break;this.currentTrack.info.sampleRate=tn(e,ue);break;case qr.Channels:if("audio"!==(null==(L=null==(z=this.currentTrack)?void 0:z.info)?void 0:L.type))break;this.currentTrack.info.numberOfChannels=Gr(e,ue);break;case qr.BitDepth:if("audio"!==(null==(q=null==(U=this.currentTrack)?void 0:U.info)?void 0:q.type))break;this.currentTrack.info.bitDepth=Gr(e,ue);break;case qr.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(de,ue)),this.currentCueTime=null;break;case qr.CueTime:this.currentCueTime=Gr(e,ue);break;case qr.CueTrackPositions:{if(null===this.currentCueTime)break;j(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(de,ue)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case qr.CueTrack:{const t=null==(W=this.currentSegment)?void 0:W.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=Gr(e,ue)}break;case qr.CueClusterPosition:{const t=null==(H=this.currentSegment)?void 0:H.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;j(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+Gr(e,ue)}break;case qr.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=Gr(e,ue);break;case qr.SimpleBlock:{if(!this.currentCluster)break;const t=$r(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=cl(e),n=sl(e),s=n>>1&3;let a=!!(128&n);"audio"===(null==(V=i.track.info)?void 0:V.type)&&i.track.info.codec&&(a=!0);const o=nl(e,ue-(e.filePos-de)),l=i.track.decodingInstructions.length>0;i.blocks.push({timestamp:r,duration:0,isKeyFrame:a,data:o,lacing:s,decoded:!l,postProcessed:!1,mainAdditional:null})}break;case qr.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(de,ue)),this.currentBlock=null;break;case qr.Block:{if(!this.currentCluster)break;const t=$r(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=cl(e),n=sl(e)>>1&3,s=nl(e,ue-(e.filePos-de)),a=i.track.decodingInstructions.length>0;this.currentBlock={timestamp:r,duration:0,isKeyFrame:!0,data:s,lacing:n,decoded:!a,postProcessed:!1,mainAdditional:null},i.blocks.push(this.currentBlock)}break;case qr.BlockAdditions:this.readContiguousElements(e.slice(de,ue));break;case qr.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(de,ue)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case qr.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=nl(e,ue);break;case qr.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=Gr(e,ue);break;case qr.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=Gr(e,ue);break;case qr.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case qr.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(de,ue));break;case qr.Targets:this.readContiguousElements(e.slice(de,ue));break;case qr.TargetTypeValue:50!==Gr(e,ue)&&(this.currentTagTargetIsMovie=!1);break;case qr.TagTrackUID:case qr.TagEditionUID:case qr.TagChapterUID:case qr.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case qr.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(de,ue));break;case qr.TagName:this.currentSimpleTagName=en(e,ue);break;case qr.TagString:{if(!this.currentSimpleTagName)break;const t=en(e,ue);this.processTagValue(this.currentSimpleTagName,t)}break;case qr.TagBinary:{if(!this.currentSimpleTagName)break;const t=nl(e,ue);this.processTagValue(this.currentSimpleTagName,t)}break;case qr.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(de,ue));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(null!=t.raw||(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new ut(this.currentAttachedFile.fileData,null!=(X=this.currentAttachedFile.fileMediaType)?X:void 0,null!=($=this.currentAttachedFile.fileName)?$:void 0,null!=(G=this.currentAttachedFile.fileDescription)?G:void 0)),(null==(Q=this.currentAttachedFile.fileMediaType)?void 0:Q.startsWith("image/"))&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let i="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?i="coverFront":t.startsWith("back.")&&(i="coverBack")}null!=t.images||(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:i,name:null!=(Y=this.currentAttachedFile.fileName)?Y:void 0,description:null!=(J=this.currentAttachedFile.fileDescription)?J:void 0})}this.currentAttachedFile=null}break;case qr.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let i=BigInt("0");for(let r=0;rt.order-e.order);break;case qr.ContentEncoding:this.currentDecodingInstruction={order:0,scope:Sn.Block,data:null},this.readContiguousElements(e.slice(de,ue)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case qr.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=Gr(e,ue);break;case qr.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=Gr(e,ue);break;case qr.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:Pn.Zlib,settings:null},this.readContiguousElements(e.slice(de,ue));break;case qr.ContentCompAlgo:if("decompress"!==(null==(te=null==(ee=this.currentDecodingInstruction)?void 0:ee.data)?void 0:te.type))break;this.currentDecodingInstruction.data.algorithm=Gr(e,ue);break;case qr.ContentCompSettings:if("decompress"!==(null==(se=null==(re=this.currentDecodingInstruction)?void 0:re.data)?void 0:se.type))break;this.currentDecodingInstruction.data.settings=nl(e,ue);break;case qr.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=de+ue,!0}decodeBlockData(e,t){j(e.decodingInstructions.length>0);let i=t;for(const r of e.decodingInstructions)if(j(r.data),"decompress"===r.data.type)if(r.data.algorithm===Pn.HeaderStripping)if(r.data.settings&&r.data.settings.length>0){const e=r.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var i,r;if(!(null==(i=this.currentSegment)?void 0:i.metadataTags))return;const n=this.currentSegment.metadataTags;if(null!=n.raw||(n.raw={}),null!=(r=n.raw)[e]||(r[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":null!=n.title||(n.title=t);break;case"description":null!=n.description||(n.description=t);break;case"artist":null!=n.artist||(n.artist=t);break;case"album":null!=n.album||(n.album=t);break;case"album_artist":null!=n.albumArtist||(n.albumArtist=t);break;case"genre":null!=n.genre||(n.genre=t);break;case"comment":null!=n.comment||(n.comment=t);break;case"lyrics":null!=n.lyrics||(n.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||null!=n.date||(n.date=e)}break;case"track_number":case"part_number":{const e=t.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=n.trackNumber||(n.trackNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=n.tracksTotal||(n.tracksTotal=r))}break;case"disc_number":case"disc":{const e=t.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=n.discNumber||(n.discNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=n.discsTotal||(n.discsTotal=r))}}}getDurationFromMetadata(e){return z(this,null,function*(){if(e.duration<=0)return null;let t=null;for(const r of e.tracks){j(r.trackBacking);const e=yield r.trackBacking.getFirstPacket({metadataOnly:!0});e&&(t=Math.min(null!=t?t:1/0,e.timestamp))}let i=e.duration/e.timestampFactor;return i+=null!=t?t:0,i})}}class En{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.segments)for(const e of r.tracks)if(e.trackBacking.getType()===t&&i++,e===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return this.internalTrack.demuxer.getDurationFromMetadata(this.internalTrack.segment)})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getFirstPacket(e){return z(this,null,function*(){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)})}intoTimescale(e){return Ce(e*this.internalTrack.segment.timestampFactor)}getPacket(e,t){return z(this,null,function*(){const i=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=pe(t.presentationTimestamps,i,e=>e.timestamp);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=Te(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=i);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.blocks.findIndex(e=>e.isKeyFrame);return j(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)})}fetchPacketInCluster(e,t,i){return z(this,null,function*(){var r,n;if(-1===t)return null;const s=e.trackData.get(this.internalTrack.id).blocks[t];if(j(s),s.decoded||(s.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,s.data),s.decoded=!0),!s.postProcessed){if("prores"===(null==(r=this.internalTrack.info)?void 0:r.codec)){if(!(s.data.length>=8&&105===s.data[4]&&99===s.data[5]&&112===s.data[6]&&102===s.data[7])){const e=new Uint8Array(s.data.length+8);J(e).setUint32(0,e.length,!1),e[4]=105,e[5]=99,e[6]=112,e[7]=102,e.set(s.data,8),s.data=e}}s.postProcessed=!0}const a=i.metadataOnly?rr:s.data,o=s.timestamp/this.internalTrack.segment.timestampFactor,l=s.duration/this.internalTrack.segment.timestampFactor,c={};s.mainAdditional&&"video"===(null==(n=this.internalTrack.info)?void 0:n.type)&&this.internalTrack.info.alphaMode&&(c.alpha=i.metadataOnly?rr:s.mainAdditional,c.alphaByteLength=s.mainAdditional.byteLength);const u=new nr(a,s.isKeyFrame?"key":"delta",o,l,e.dataStartPos+t,s.data.byteLength,c);return this.packetToClusterLocation.set(u,{cluster:e,blockIndex:t}),u})}performClusterLookup(e,t,i,r,n){return z(this,null,function*(){var s,a,o,l;const{demuxer:c,segment:u}=this.internalTrack;let d=null,h=null,f=-1;if(e){const{blockIndex:i,correctBlockFound:r}=t(e);if(r)return this.fetchPacketInCluster(e,i,n);-1!==i&&(h=e,f=i)}const m=pe(this.internalTrack.cuePoints,i,e=>e.time),p=-1!==m?this.internalTrack.cuePoints[m]:null,g=pe(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),k=-1!==g?this.internalTrack.clusterPositionCache[g]:null,y=Math.max(null!=(s=null==p?void 0:p.clusterPosition)?s:0,null!=(a=null==k?void 0:k.elementStartPos)?a:0)||null;let b;for(e?null===y||e.elementStartPos>=y?(b=e.elementEndPos,d=e):b=y:b=null!=y?y:u.clusterSeekStartPos;null===u.elementEndPos||b<=u.elementEndPos-2;){if(d){const e=d.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=c.reader.requestSliceRange(b,2,Kr);if(Xe(e)&&(e=yield e),!e)break;const i=b,s=Jr(e);if(!s||!Vr.includes(s.id)&&s.id!==qr.Void){const e=yield nn(c.reader,i,Vr,Math.min(null!=(o=u.elementEndPos)?o:1/0,i+Cn));if(e){b=e;continue}break}const a=s.id;let l=s.size;const m=e.filePos;if(a===qr.Cluster){d=yield c.readCluster(i,u),l=d.elementEndPos-m;const{blockIndex:e,correctBlockFound:r}=t(d);if(r)return this.fetchPacketInCluster(d,e,n);-1!==e&&(h=d,f=e)}if(void 0===l){j(a!==qr.Cluster);l=(yield rn(c.reader,m,jr,u.elementEndPos)).pos-m}const p=m+l;if(null===u.elementEndPos){let e=c.reader.requestSliceRange(p,2,Kr);if(Xe(e)&&(e=yield e),!e)break;if(Qr(e)===qr.Segment){u.elementEndPos=p;break}}b=p}if(p&&(!h||h.elementStartPosz(this,null,function*(){var e,t,i,r,n;let s=null;("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"prores"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(s=yield this.getFirstPacket({}));const a={width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&s?Ft(s.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&s?Wt(s.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&s?ei(s.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&s?ii(s.data):null,proresCodecInfo:"prores"===this.internalTrack.info.codec&&s?ri(s.data):null,proresFormat:this.internalTrack.info.proresFormat};if(!oe(this.internalTrack.info.colorSpace)){const n=Ui(a);null!=(e=this.internalTrack.info.colorSpace).primaries||(e.primaries=n.primaries),null!=(t=this.internalTrack.info.colorSpace).transfer||(t.transfer=n.transfer),null!=(i=this.internalTrack.info.colorSpace).matrix||(i.matrix=n.matrix),null!=(r=this.internalTrack.info.colorSpace).fullRange||(r.fullRange=n.fullRange)}const o={codec:Li(a),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(n=this.internalTrack.info.codecDescription)?n:void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(o.displayAspectWidth=this.internalTrack.info.squarePixelWidth,o.displayAspectHeight=this.internalTrack.info.squarePixelHeight),o}))():null})}}class Rn extends En{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return z(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>z(this,null,function*(){var e;if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=yield this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&xi(e.data)}return{codec:qi({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo,dtsFormat:this.internalTrack.info.dtsFormat}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}}))():null})}}const Fn=(e,t,i,r=null)=>z(null,null,function*(){const n=B(2,16);let s=t;for(;null===i||s=4;){const t=a.filePos,i=dl(a),n=null!==e.fileSize?e.fileSize-s:null,o=Yi(i,n);if(o.header&&(!r||o.header.sampleRate===r.sampleRate&&o.header.mpegVersionId===r.mpegVersionId&&o.header.layer===r.layer&&tr(o.header.channel)===tr(r.channel)))return{header:o.header,startPos:s};a.filePos=t+o.bytesAdvanced,s=a.filePos}}return null});class An extends ir{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.firstFrameHeaderPos=null,this.xingFrameHeader=null,this.xingFrameHeaderPos=null,this.loadedSamples=[],this.metadataTags=null,this.xingData=null,this.trackBackings=[],this.readingMutex=new ue,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return z(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();if(!this.firstFrameHeader&&this.xingFrameHeader&&(this.firstFrameHeader=this.xingFrameHeader,this.firstFrameHeaderPos=this.xingFrameHeaderPos),!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.trackBackings=[new Dn(this)]}))()})}advanceReader(){return z(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,Cl);if(Xe(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Rl(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=yield Fn(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const i=Qi(t.mpegVersionId,t.channel);let r=this.reader.requestSlice(e.startPos+i,4);if(Xe(r)&&(r=yield r),r){const n=dl(r);if(n===$i||n===Gi){if(this.xingFrameHeader||(this.xingFrameHeader=t,this.xingFrameHeaderPos=e.startPos),!this.xingData){let t=this.reader.requestSlice(e.startPos+i+4,12);if(Xe(t)&&(t=yield t),t){const e=nl(t,12),i=J(e),r=i.getUint32(0,!1);this.xingData={frameCount:r&Zi.FrameCount?i.getUint32(4,!1):null,fileSize:r&Zi.FileSize?i.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=t,this.firstFrameHeaderPos=e.startPos);const n=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,s={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:n,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(s),this.nextTimestampInSamples+=t.audioSamplesInFrame})}getMimeType(){return z(this,null,function*(){return"audio/mpeg"})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return z(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let i=this.reader.requestSlice(e,Cl);if(Xe(i)&&(i=yield i),!i)break;const r=Rl(i);if(!r)break;t=!0;let n=this.reader.requestSlice(i.filePos,r.size);if(Xe(n)&&(n=yield n),!n)break;Fl(n,r,this.metadataTags),e=i.filePos+r.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=xl){let e=this.reader.requestSlice(this.reader.fileSize-xl,xl);Xe(e)&&(e=yield e),j(e);"TAG"===Tl(e,3)&&El(e,this.metadataTags)}return this.metadataTags}finally{e()}})}}class Dn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return j(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){const e=this.demuxer;if(j(null!==e.firstFrameHeader),j(null!==e.firstFrameHeaderPos),e.xingData){if(null!==e.xingData.frameCount)return e.xingData.frameCount*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}else if(null!==e.reader.fileSize){const s=(t=e.firstFrameHeader.lowSamplingFrequency,i=e.firstFrameHeader.layer,r=e.firstFrameHeader.bitrate,n=e.firstFrameHeader.sampleRate,0===i?0:1===i?144*r/(n<e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}})}getPacket(e,t){return z(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=pe(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1>>0&4294967295}const On=e=>{const t=J(e),i=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let n=0;n>>24^t])>>>0}return t.setUint32(22,i,!0),r},zn=(e,t,i)=>{let r=0,n=null;if(e.length>0)if("vorbis"===t.codec){j(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,a=(e[0]&s)>>1;if(a>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=i;const l=t.vorbisInfo.modeBlockflags[a];if(n=t.vorbisInfo.blocksizes[l],1===l){const i=1+(1|s),r=e[0]&i?1:0;o=t.vorbisInfo.blocksizes[r]}r=null!==o?o+n>>2:0}else if("opus"===t.codec){r=(e=>{const t=e[0]>>3,i=3&e[0];let r;return r=0===i?1:1===i||2===i?2:63&e[1],{durationInSamples:ni[t]*r}})(e).durationInSamples}return{durationInSamples:r,vorbisBlockSize:n}},Ln=27,Un=282,qn=e=>{const t=e.filePos;if(hl(e)!==Mn)return null;e.skip(1);const i=sl(e),r=kl(e),n=hl(e),s=hl(e),a=hl(e),o=sl(e),l=new Uint8Array(o);for(let d=0;de+t,0);return{headerStartPos:t,totalSize:c+u,dataStartPos:t+c,dataSize:u,headerType:i,granulePosition:r,serialNumber:n,sequenceNumber:s,checksum:a,lacingValues:l}},Wn=(e,t)=>{for(;e.filePos>>8&255)===i||(t>>>16&255)===i||(t>>>24&255)===i){if(e.skip(-4),t===Mn)return!0;e.skip(1)}}return!1};class Hn extends ir{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.trackBackings=[],this.metadataTags={},this.reader=e._reader}readMetadata(){return z(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,Ln,Un);if(Xe(t)&&(t=yield t),!t)break;const i=qn(t);if(!i)break;if(!!!(2&i.headerType))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(const t of this.bitstreams){const e=yield this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?yield this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&(yield this.readOpusMetadata(e,t)),null!==t.codecInfo.codec&&this.trackBackings.push(new Vn(t,this)))}}))()})}readVorbisMetadata(e,t){return z(this,null,function*(){let i=yield this.findNextPacketStart(e);if(!i)return;const r=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;if(i=yield this.findNextPacketStart(r),!i)return;const n=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!n)return;if(3!==r.data[0]||5!==n.data[0])return;const s=[],a=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};a(e.data.length),a(r.data.length);const o=new Uint8Array(1+s.length+e.data.length+r.data.length+n.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(r.data,1+s.length+e.data.length),o.set(n.data,1+s.length+e.data.length+r.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=n;const l=J(e.data);t.numberOfChannels=l.getUint8(11),t.sampleRate=l.getUint32(12,!0);const c=l.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&c),1<<(c>>4)],modeBlockflags:si(n.data).modeBlockflags},ci(r.data.subarray(7),this.metadataTags)})}readOpusMetadata(e,t){return z(this,null,function*(){const i=yield this.findNextPacketStart(e);if(!i)return;const r=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=r;const n=(e=>{const t=J(e),i=t.getUint8(9),r=t.getUint16(10,!0),n=t.getUint32(12,!0),s=t.getInt16(16,!0),a=t.getUint8(18);let o=null;return a&&(o=e.subarray(19,21+i)),{outputChannelCount:i,preSkip:r,inputSampleRate:n,outputGain:s,channelMappingFamily:a,channelMappingTable:o}})(e.data);t.numberOfChannels=n.outputChannelCount,t.sampleRate=Wi,t.codecInfo.opusInfo={preSkip:n.preSkip},ci(r.data.subarray(8),this.metadataTags)})}readPacket(e,t){return z(this,null,function*(){j(te+t.length,0);if(0===o)return null;const l=new Uint8Array(o);let c=0;for(let e=0;e{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(yield Promise.all(this.trackBackings.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})))).filter(Boolean)})})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return z(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}class Vn{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new ue,this.internalSampleRate="opus"===e.codecInfo.codec?Wi:e.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){const e=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return j(-1!==e),e+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return null})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}getDecoderConfig(){return z(this,null,function*(){var e;return j(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:null!=(e=this.bitstream.description)?e:void 0}})}getName(){return null}getLanguageCode(){return xe}getDisposition(){return R(_({},dt),{primary:!1})}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(j(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,i){if(!e)return null;const{durationInSamples:r,vorbisBlockSize:n}=zn(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new nr(i.metadataOnly?rr:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,r/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:r,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:n}),s}getFirstPacket(e){return z(this,null,function*(){j(this.bitstream.lastMetadataPacket);const t=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(j(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const r=yield this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(r,{timestampInSamples:i,vorbisLastBlocksize:null},e)})}getNextPacket(e,t){return z(this,null,function*(){const i=this.encodedPacketToMetadata.get(e);if(!i)throw new Error("Packet was not created from this track.");const r=yield this.demuxer.findNextPacketStart(i.packet);if(!r)return null;const n=i.timestampInSamples+i.durationInSamples,s=yield this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:n,vorbisLastBlocksize:i.vorbisBlockSize},t)})}getPacket(e,t){return z(this,null,function*(){var i,r;if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const n=Ce(e*this.internalSampleRate);if(0===n)return this.getFirstPacket(t);if(n<0)return null;j(this.bitstream.lastMetadataPacket);const s=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!s)return null;let a=s.startPage,o=this.demuxer.reader.fileSize;const l=[a];e:for(;a.headerStartPos+a.totalSizen?o=c.headerStartPos:(a=c,l.push(c));continue e}i=c.headerStartPos+c.totalSize}}let c=s.startPage;for(const e of l){if(e.granulePosition===a.granulePosition)break;(!c||e.headerStartPos>c.headerStartPos)&&(c=e)}let u=c;const d=[u];for(;u.serialNumber!==this.bitstream.serialNumber||u.granulePosition!==a.granulePosition;){const e=u.headerStartPos+u.totalSize;let t=this.demuxer.reader.requestSliceRange(e,Ln,Un);Xe(t)&&(t=yield t),j(t);const i=qn(t);j(i),u=i,u.serialNumber===this.bitstream.serialNumber&&d.push(u)}j(-1!==u.granulePosition);let h,f,m=null,p=u,g=0;if(u.headerStartPos===s.startPage.headerStartPos)h=this.granulePositionToTimestampInSamples(0),f=!0,m=0;else{h=0,f=!1;for(let t=u.lacingValues.length-1;t>=0;t--){if(u.lacingValues[t]<255){m=t+1;break}}if(null===m)throw new Error("Invalid page with granule position: no packets end on this page.");g=m-1;const e={data:rr,endPage:p,endSegmentIndex:g};if(yield this.demuxer.findNextPacketStart(e)){const e=Kn(d,u,m);j(e);const t=jn(d,e.page,e.segmentIndex);t&&(u=t.page,m=t.segmentIndex)}else for(;;){const e=Kn(d,u,m);if(!e)break;const t=jn(d,e.page,e.segmentIndex);if(!t)break;if(u=t.page,m=t.segmentIndex,e.page.headerStartPos!==p.headerStartPos){p=e.page,g=e.segmentIndex;break}}}let k=null,y=null;for(;null!==u;){j(null!==m);const e=yield this.demuxer.readPacket(u,m);if(!e)break;if(!(u.headerStartPos===s.startPage.headerStartPos&&mn||Math.max(a.timestampInSamples,0)===n))break}const a=yield this.demuxer.findNextPacketStart(e);if(!a)break;u=a.startPage,m=a.startSegmentIndex}return k})}getPacketSequential(e,t){return z(this,null,function*(){const i=yield this.sequentialScanMutex.acquire();try{const i=Ce(e*this.internalSampleRate);e=i/this.internalSampleRate;const r=pe(this.sequentialScanCache,i,e=>e.timestampInSamples);let n;if(-1!==r){const e=this.sequentialScanCache[r];n=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else n=yield this.getFirstPacket(t);let s=0;for(;n&&n.timestampe)break;if(n=i,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(n);j(e),this.sequentialScanCache.length>0&&j(X(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return n}finally{i()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const jn=(e,t,i)=>{let r=t,n=i;e:for(;;){for(n--;n>=0;n--){if(r.lacingValues[n]<255){n++;break e}}j(-1===n);if(!(1&r.headerType)){n=0;break}const t=be(e,e=>e.headerStartPos{if(i>0)return{page:t,segmentIndex:i-1};const r=be(e,e=>e.headerStartPosz(this,null,function*(){var e,t;let i=this.reader.requestSlice(0,12);Xe(i)&&(i=yield i),j(i);const r=Tl(i,4),n="RIFX"!==r,s="RF64"===r,a=ul(i,n);let o=s?this.reader.fileSize:Math.min(a+8,null!=(e=this.reader.fileSize)?e:1/0);if("WAVE"!==Tl(i,4))throw new Error("Invalid WAVE file - wrong format");let l=0,c=null,u=i.filePos;for(;null===o||u=18&&357!==n){const e=al(r,i),s=t-18;if(Math.min(s,e)>=22&&n===Xn.EXTENSIBLE){r.skip(6);const e=nl(r,16);n=e[0]|e[1]<<8}}if(n!==Xn.MULAW&&n!==Xn.ALAW||(l=8),n!==Xn.PCM&&n!==Xn.IEEE_FLOAT&&n!==Xn.ALAW&&n!==Xn.MULAW)throw new Error(`Unsupported WAVE codec (format tag ${n}). Only integer/float PCM, A-law, and \u03bc-law are supported.`);if(n===Xn.PCM&&![8,16,24,32].includes(l))throw new Error(`Unsupported WAVE PCM bit depth (${l}). Only 8, 16, 24, and 32 bits are supported.`);if(n===Xn.IEEE_FLOAT&&![32,64].includes(l))throw new Error(`Unsupported WAVE float bit depth (${l}). Only 32 and 64 bits are supported.`);this.audioInfo={format:n,numberOfChannels:s,sampleRate:a,sampleSizeInBytes:Math.ceil(l/8),blockSizeInBytes:o}})}parseListChunk(e,t,i){return z(this,null,function*(){var r,n,s,a,o,l,c,u,d,h,f;let m=this.reader.requestSlice(e,t);if(Xe(m)&&(m=yield m),!m)return;const p=Tl(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=Tl(m,4),t=ul(m,i),p=nl(m,t);let k=0;for(let i=0;i0&&(null!=(l=this.metadataTags).trackNumber||(l.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=(c=this.metadataTags).tracksTotal||(c.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||null!=(u=this.metadataTags).date||(u.date=e)}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&(null!=(d=this.metadataTags).date||(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":null!=(h=this.metadataTags).genre||(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":null!=(f=this.metadataTags).comment||(f.comment=y)}g+=8+t+(1&t)}})}parseId3Chunk(e,t){return z(this,null,function*(){let i=this.reader.requestSlice(e,t);if(Xe(i)&&(i=yield i),!i)return;const r=Rl(i);if(r){const n=t-Cl;if(r.size=Math.min(r.size,n),r.size>0){const t=i.slice(e+Cl,r.size);Fl(t,r,this.metadataTags)}}})}getCodec(){if(j(this.audioInfo),this.audioInfo.format===Xn.MULAW)return"ulaw";if(this.audioInfo.format===Xn.ALAW)return"alaw";if(this.audioInfo.format===Xn.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}if(this.audioInfo.format===Xn.IEEE_FLOAT){if(4===this.audioInfo.sampleSizeInBytes)return"pcm-f32";if(8===this.audioInfo.sampleSizeInBytes)return"pcm-f64"}j(!1)}getMimeType(){return z(this,null,function*(){return"audio/wav"})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return z(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}const Qn=2048;class Yn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.format}getDecoderConfig(){return z(this,null,function*(){const e=this.demuxer.getCodec();return e?(j(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null})}getNumberOfChannels(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return j(-1!==this.demuxer.dataSize),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getName(){return null}getLanguageCode(){return xe}getDisposition(){return _({},dt)}getPacketAtIndex(e,t){return z(this,null,function*(){j(e>=0),j(this.demuxer.audioInfo);const i=e*Qn*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const r=Math.min(Qn*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);if(Xe(e)&&(e=yield e),!e)return null}let n;if(t.metadataOnly)n=rr;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);Xe(e)&&(e=yield e),j(e),n=nl(e,r)}const s=e*Qn/this.demuxer.audioInfo.sampleRate,a=r/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,this.demuxer.lastKnownPacketIndex),new nr(n,"key",s,a,e,r)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getPacket(e,t){return z(this,null,function*(){j(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/Qn,(this.demuxer.dataSize-1)/(Qn*this.demuxer.audioInfo.blockSizeInBytes)));if(i<0)return null;const r=yield this.getPacketAtIndex(i,t);if(r)return r;if(0===i)return null;j(null===this.demuxer.reader.fileSize);let n=yield this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;n;){const e=yield this.getNextPacket(n,t);if(!e)break;n=e}return n})}getNextPacket(e,t){j(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/Qn);return this.getPacketAtIndex(i+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Jn=e=>{const t=e.filePos,i=nl(e,9),r=new ht(i);if(4095!==r.readBits(12))return null;r.skipBits(1);if(0!==r.readBits(2))return null;const n=r.readBits(1),s=r.readBits(2)+1,a=r.readBits(4);if(15===a)return null;r.skipBits(1);const o=r.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);const l=r.readBits(13);r.skipBits(11);const c=r.readBits(2)+1;if(1!==c)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===n?e.filePos-=2:u=r.readBits(16),{objectType:s,samplingFrequencyIndex:a,channelConfiguration:o,frameLength:l,numberOfAacFrames:c,crcCheck:u,startPos:t}},Zn=1024;class es extends ir{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.trackBackings=[],this.readingMutex=new ue,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return z(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();j(this.firstFrameHeader),this.trackBackings=[new ts(this)]}))()})}advanceReader(){return z(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,Cl);if(Xe(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Rl(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(Xe(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Jn(e);if(!t)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&t.startPos+t.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=t);const i=ft[t.samplingFrequencyIndex];j(void 0!==i);const r=Zn/i,n={timestamp:this.nextTimestampInSamples/i,duration:r,dataStart:t.startPos,dataSize:t.frameLength};this.loadedSamples.push(n),this.nextTimestampInSamples+=Zn,this.lastLoadedPos=t.startPos+t.frameLength})}getMimeType(){return z(this,null,function*(){return"audio/aac"})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return z(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0;for(;;){let t=this.reader.requestSlice(e,Cl);if(Xe(t)&&(t=yield t),!t)break;const i=Rl(t);if(!i)break;let r=this.reader.requestSlice(t.filePos,i.size);if(Xe(r)&&(r=yield r),!r)break;Fl(r,i,this.metadataTags),e=t.filePos+i.size}return this.metadataTags}finally{e()}})}}class ts{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/Zn}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return null})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getName(){return null}getLanguageCode(){return xe}getCodec(){return"aac"}getInternalCodecId(){return j(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){j(this.demuxer.firstFrameHeader);const e=mt[this.demuxer.firstFrameHeader.channelConfiguration];return j(void 0!==e),e}getSampleRate(){j(this.demuxer.firstFrameHeader);const e=ft[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return j(void 0!==e),e}getDisposition(){return _({},dt)}getDecoderConfig(){return z(this,null,function*(){return j(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}})}getPacketAtIndex(e,t){return z(this,null,function*(){if(-1===e)return null;const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=rr;else{let e=this.demuxer.reader.requestSlice(i.dataStart,i.dataSize);if(Xe(e)&&(e=yield e),!e)return null;r=nl(e,i.dataSize)}return new nr(r,"key",i.timestamp,i.duration,e,i.dataSize)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getNextPacket(e,t){return z(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{const i=me(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}})}getPacket(e,t){return z(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=pe(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1z(this,null,function*(){var e;let t=0;for(;;){let e=this.reader.requestSlice(t,Cl);if(Xe(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const i=Rl(e);if(!i)break;let r=this.reader.requestSlice(e.filePos,i.size);Xe(r)&&(r=yield r),j(r),Fl(r,i,this.metadataTags),t=e.filePos+i.size}for(t+=4;null===this.reader.fileSize||ts.end-6)return{num:a.num,blockSize:a.blockSize,sampleRate:a.sampleRate,size:s.end-e,isLastFrame:!0};if(255===sl(s)){const t=s.filePos;if(sl(s)!==(1===this.blockingBit?249:248)){s.filePos=t;continue}s.skip(-2);const i=s.filePos-e,r=this.readFlacFrameHeader({slice:s,isFirstPacket:!1});if(!r){s.filePos=t;continue}if(0===this.blockingBit){if(r.num-a.num!==1){s.filePos=t;continue}}else if(r.num-a.num!==a.blockSize){s.filePos=t;continue}return{num:a.num,blockSize:a.blockSize,sampleRate:a.sampleRate,size:i,isLastFrame:!1}}}})}readFlacFrameHeader({slice:e,isFirstPacket:t}){const i=e.filePos,r=nl(e,4),n=new ht(r);if(32764!==n.readBits(15))return null;if(null===this.blockingBit){j(t);const e=n.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){j(!t);if(1!==n.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");j(!t);if(0!==n.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*B(2,e):6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?B(2,e):null)(n.readBits(4));if(!s)return null;j(this.audioInfo);const a=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(n.readBits(4),this.audioInfo.sampleRate);if(!a)return null;n.readBits(4),n.readBits(3);if(0!==n.readBits(1))return null;const o=(e=>{let t=0;const i=new ht(nl(e,1));for(;1===i.readBits(1);)t++;if(0===t)return i.readBits(7);const r=[],n=t-1,s=new ht(nl(e,n)),a=8-t-1;for(let o=0;oe|t<"uncommon-u16"===t?ol(e)+1:"uncommon-u8"===t?sl(e)+1:"number"===typeof t?t:(ve(t),void j(!1)))(e,s),c=((e,t)=>"uncommon-u16"===t?ol(e):"uncommon-u16-10"===t?10*ol(e):"uncommon-u8"===t?sl(e):"number"===typeof t?t:null)(e,a);if(null===c)return null;if(c!==this.audioInfo.sampleRate)return null;const u=e.filePos-i,d=sl(e);e.skip(-u),e.skip(-1);const h=(e=>{let t=0;for(const i of e){t^=i;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(nl(e,u));return d!==h?null:{num:o,blockSize:l,sampleRate:c}}advanceReader(){return z(this,null,function*(){yield this.readMetadata(),j(null!==this.lastLoadedPos),j(this.audioInfo);const e=this.lastLoadedPos,t=yield this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],r={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(r),t.isLastFrame&&(this.lastSampleLoaded=!0)})}}class rs{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return xe}getTimeResolution(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return j(this.demuxer.audioInfo),0===this.demuxer.audioInfo.totalSamples?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getDisposition(){return _({},dt)}getDecoderConfig(){return z(this,null,function*(){return j(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}})}getPacket(e,t){return z(this,null,function*(){if(j(this.demuxer.audioInfo),e<0)return null;const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=pe(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===i){yield this.demuxer.advanceReader();continue}const r=this.demuxer.loadedSamples[i],n=r.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(n+r.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(i,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);yield this.demuxer.advanceReader()}}finally{i()}})}getNextPacket(e,t){return z(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{const i=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{i()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}getPacketAtIndex(e,t){return z(this,null,function*(){const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=rr;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(Xe(e)&&(e=yield e),!e)return null;r=nl(e,i.byteSize)}j(this.demuxer.audioInfo);const n=i.blockOffset/this.demuxer.audioInfo.sampleRate,s=i.blockSize/this.demuxer.audioInfo.sampleRate;return new nr(r,"key",n,s,e,i.byteSize)})}getFirstPacket(e){return z(this,null,function*(){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)})}}const ns=9e4,ss=B(2,33),as=188,os="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",ls=new Set([133,134,162]),cs=new Set;class us extends ir{constructor(e){super(e),this.metadataPromise=null,this.elementaryStreams=[],this.trackBackingEntries=[],this.packetOffset=0,this.packetStride=-1,this.sectionEndPositions=[],this.seekChunkSize=5242880,this.minReferencePointByteDistance=-1,this.timestampWrapInfo=null,this.reader=e._reader}readMetadata(){return z(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){let e=this.reader.requestSlice(0,205);Xe(e)&&(e=yield e),j(e);const t=nl(e,205);if(71===t[0]&&71===t[188])this.packetOffset=0,this.packetStride=as;else if(71===t[0]&&71===t[204])this.packetOffset=0,this.packetStride=204;else{if(71!==t[4]||71!==t[196])throw new Error("Unreachable.");this.packetOffset=4,this.packetStride=192}this.minReferencePointByteDistance=256*this.packetStride;let i=this.packetOffset,r=null,n=!1,s=!1;for(;;){const e=yield this.readPacketHeader(i);if(!e)break;if(0===e.payloadUnitStartIndicator){i+=this.packetStride;continue}if(s&&!this.elementaryStreams.some(t=>t.pid===e.pid)){i+=this.packetStride;continue}const t=yield this.readSection(i,!0,!s);if(!t)break;const a=3,o=32;let l=!1;if(!s&&0!==t.pid){if(!(0===t.payload[0]&&0===t.payload[1]&&1===t.payload[2])){const e=new ht(t.payload),i=e.readAlignedByte();e.skipBits(8*i);l=2===e.readBits(8)}}if(0!==t.pid||n)if(t.pid!==r&&!l||s){const e=this.elementaryStreams.find(e=>e.pid===t.pid);e:if(e&&!e.initialized){const i=hs(this,t,!0);if(!i)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${e.pid}`);if(e.firstSection=t,e.canBeTrustedWithKeyPackets=1===t.randomAccessIndicator,this.input._initInput){const i=(yield this.input._initInput._getDemuxer()).elementaryStreams.find(i=>i.pid===t.pid&&i.info.codec===e.info.codec);if(i){e.info=i.info,e.initialized=!0;break e}}const r=new ks(e,i);if("video"===e.info.type){for(;;){if(r.suppliedPacket=null,yield r.markNextPacket(),"avc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(e.info.avcCodecInfo=Ft(r.suppliedPacket.data),!e.info.avcCodecInfo)continue;const t=e.info.avcCodecInfo.sequenceParameterSets[0];j(t);const i=Nt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight;const n=i.pixelAspectRatio.num,s=i.pixelAspectRatio.den;n>0&&s>0&&(n>s?(e.info.squarePixelWidth=Math.round(e.info.width*n/s),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*s/n))),e.info.colorSpace={primaries:ie[i.colourPrimaries],transfer:ne[i.transferCharacteristics],matrix:ae[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}if("hevc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(e.info.hevcCodecInfo=Wt(r.suppliedPacket.data),!e.info.hevcCodecInfo)continue;const t=e.info.hevcCodecInfo.arrays.find(e=>e.nalUnitType===St.SPS_NUT).nalUnits[0];j(t);const i=qt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight,i.pixelAspectRatio.num>i.pixelAspectRatio.den?(e.info.squarePixelWidth=Math.round(e.info.width*i.pixelAspectRatio.num/i.pixelAspectRatio.den),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*i.pixelAspectRatio.den/i.pixelAspectRatio.num)),e.info.colorSpace={primaries:ie[i.colourPrimaries],transfer:ne[i.transferCharacteristics],matrix:ae[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}throw new Error("Unhandled.")}e.info.decoderConfig={codec:Li({width:e.info.width,height:e.info.height,codec:e.info.codec,codecDescription:null,colorSpace:e.info.colorSpace,avcType:1,avcCodecInfo:e.info.avcCodecInfo,hevcCodecInfo:e.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null,proresFormat:null}),codedWidth:e.info.width,codedHeight:e.info.height,colorSpace:e.info.colorSpace},e.info.width===e.info.squarePixelWidth&&e.info.height===e.info.squarePixelHeight||(e.info.decoderConfig.displayAspectWidth=e.info.squarePixelWidth,e.info.decoderConfig.displayAspectHeight=e.info.squarePixelHeight),e.initialized=!0}else{if(yield r.markNextPacket(),!r.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${e.pid}`);if("aac"===e.info.codec){const t=il.tempFromBytes(r.suppliedPacket.data),i=Jn(t);if(!i)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");e.info.aacCodecInfo={isMpeg2:!1,objectType:i.objectType},e.info.numberOfChannels=mt[i.channelConfiguration],e.info.sampleRate=ft[i.samplingFrequencyIndex]}else if("mp3"===e.info.codec){const t=dl(il.tempFromBytes(r.suppliedPacket.data)),i=Yi(t,r.suppliedPacket.data.byteLength);if(!i.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");e.info.numberOfChannels=tr(i.header.channel),e.info.sampleRate=i.header.sampleRate}else if("ac3"===e.info.codec){const t=di(r.suppliedPacket.data);if(!t)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(3===t.fscod)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=ui[t.acmod]+t.lfeon,e.info.sampleRate=yt[t.fscod]}else if("eac3"===e.info.codec){const t=mi(r.suppliedPacket.data);if(!t)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");const i=pi(t);if(null===i)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=gi(t),e.info.sampleRate=i}else{if("dts"!==e.info.codec)throw new Error("Unhandled.");{const t=Ii(r.suppliedPacket.data);if(!t)throw new Error("Invalid DTS audio stream; could not read frame header from first packet.");e.info.numberOfChannels=t.numberOfChannels,e.info.sampleRate=t.sampleRate,t.core&&(e.info.dtsFormat=t.hasExtensions?"dtsh":"dtsc")}}e.info.decoderConfig={codec:qi({codec:e.info.codec,codecDescription:null,aacCodecInfo:e.info.aacCodecInfo,dtsFormat:e.info.dtsFormat}),numberOfChannels:e.info.numberOfChannels,sampleRate:e.info.sampleRate},e.initialized=!0}}}else{const e=new ht(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(12);const r=e.readBits(12);e.skipBits(43),e.readBits(13),e.skipBits(6);const n=e.readBits(10),l=e.pos+8*n;let c=!1;for(;e.pos=4){const t=e.readBits(32);c||(c=1212435798===t||1212436562===t)}e.pos=r}for(e.pos=l;8*(r+a)-e.pos>o;){const t=e.readBits(8);e.skipBits(3);const i=e.readBits(13);e.skipBits(6);const r=e.readBits(10),n=e.pos+8*r;let s=!1,a=!1,o=!1;for(;e.pos=4){const t=e.readBits(32);o||(o=1146376960===(4294967040&t))}e.pos=r}let l=null;const u=c&&ls.has(t)?130:t;switch(u){case 27:case 36:l={type:"video",codec:27===t?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:case 130:case 138:{let e;e=3===u||4===u?"mp3":15===u?"aac":129===u?"ac3":135===u?"eac3":"dts",l={type:"audio",codec:e,decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:a?l={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:s?l={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:o&&(l={type:"audio",codec:"dts",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1});break;default:cs.has(t)||(lt._warn(`Note: MPEG-TS streams with stream_type 0x${t.toString(16)} are not currently supported.`),cs.add(t))}l&&this.elementaryStreams.push({demuxer:this,pid:i,streamType:t,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:l,referencePesPackets:[]})}s=!0}else{const e=new ht(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(14);const s=e.readBits(10);for(e.skipBits(40);8*(s+a)-e.pos>o;){const t=e.readBits(16);e.skipBits(3);const i=e.readBits(13);if(0!==t){if(null!==r)throw new Error("Only files with a single program are supported.");r=i}}if(null===r)throw new Error("Program Association Table must link to a Program Map Table.");n=!0}if(s&&this.elementaryStreams.every(e=>e.initialized))break;i+=this.packetStride}if(!s){if(!n)throw new Error("No Program Association Table found in the file.");throw new Error("No Program Map Table found in the file.")}for(const a of this.elementaryStreams)a.initialized&&("video"===a.info.type?this.trackBackingEntries.push(new ms(a)):this.trackBackingEntries.push(new ps(a)))}))()})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackingEntries})}getMetadataTags(){return z(this,null,function*(){return{}})}getMimeType(){return z(this,null,function*(){yield this.readMetadata();return(e=>{let t="video/MP2T";const i=[...new Set(e.filter(Boolean))];return i.length>0&&(t+=`; codecs="${i.join(", ")}"`),t})(yield Promise.all(this.trackBackingEntries.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null}))))})}readSection(e,t,i=!1){return z(this,null,function*(){let r=e,n=e;const s=[];let a,o=0,l=null,c=!0,u=0;for(;;){const e=yield this.readPacket(n);if(n+=this.packetStride,!e)break;if(l){if(e.pid!==l.pid){if(i)break;continue}if(1===e.payloadUnitStartIndicator)break}else{if(0===e.payloadUnitStartIndicator)break;l=e}const a=!!(2&e.adaptationFieldControl),d=!!(1&e.adaptationFieldControl);let h=0;if(a&&(h=1+e.body[0],e===l&&h>1&&(u=e.body[1]>>6&1)),d&&(0===h?(s.push(e.body),o+=e.body.byteLength):(s.push(e.body.subarray(h)),o+=e.body.byteLength-h)),r=n,!t&&o>=64){c=!1;break}if(-1!==me(this.sectionEndPositions,r,e=>e)){c=!1;break}}if(c){const e=pe(this.sectionEndPositions,r,e=>e);this.sectionEndPositions.splice(e+1,0,r)}if(!l)return null;if(1===s.length)a=s[0];else{const e=s.reduce((e,t)=>e+t.length,0);a=new Uint8Array(e);let t=0;for(const i of s)a.set(i,t),t+=i.length}return{startPos:e,endPos:t?r:null,pid:l.pid,payload:a,randomAccessIndicator:u}})}readPacketHeader(e){return z(this,null,function*(){let t=this.reader.requestSlice(e,4);if(Xe(t)&&(t=yield t),!t)return null;if(71!==sl(t))throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const i=ol(t);return{payloadUnitStartIndicator:i>>14&1,pid:8191&i,adaptationFieldControl:sl(t)>>4&3}})}readPacket(e){return z(this,null,function*(){let t=this.reader.requestSlice(e,as);if(Xe(t)&&(t=yield t),!t)return null;const i=nl(t,as);if(71!==i[0])throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const r=(i[1]<<8)+i[2];return{payloadUnitStartIndicator:r>>14&1,pid:8191&r,adaptationFieldControl:i[3]>>4&3,body:i.subarray(4)}})}normalizeTimestamp(e){if(!this.timestampWrapInfo){const t=54e5;this.timestampWrapInfo={reference:e-t,offset:e>=ss-t?-ss:ss}}const{reference:t,offset:i}=this.timestampWrapInfo;return i<0&&e>=t||i>0&&e{if(t.payload.byteLength<3)return null;const r=new ht(t.payload);if(1!==r.readBits(24))return null;const n=r.readBits(8);if(r.skipBits(16),188===n||190===n||191===n||240===n||241===n||255===n||242===n||248===n)return null;r.skipBits(8);const s=r.readBits(2);r.skipBits(14);let a=null;if(2===s||3===s)a=0,r.skipBits(4),a+=r.readBits(3)*(1<<30),r.skipBits(1),a+=32768*r.readBits(15),r.skipBits(1),a+=r.readBits(15),a=e.normalizeTimestamp(a);else if(i)throw new Error(os);return{sectionStartPos:t.startPos,sectionEndPos:t.endPos,pts:a,randomAccessIndicator:t.randomAccessIndicator}},hs=(e,t,i)=>{j(null!==t.endPos);const r=ds(e,t,i);if(!r)return null;const n=new ht(t.payload);n.skipBits(32);const s=n.readBits(16);n.skipBits(16);const a=n.readBits(8),o=n.pos+8*a;n.pos=o;const l=o/8;j(Number.isInteger(l));const c=t.payload.subarray(l,s>0?6+s:t.payload.byteLength);return R(_({},r),{data:c})};class fs{constructor(e){this.elementaryStream=e,this.packetBuffers=new WeakMap,this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){const e=this.elementaryStream.demuxer,t=this.elementaryStream.info.type;let i=0;for(const r of e.trackBackingEntries)if(r.getType()===t&&i++,j(r instanceof fs),r.elementaryStream===this.elementaryStream)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return xe}getDisposition(){return R(_({},dt),{primary:!1})}getTimeResolution(){return ns}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return null})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}createEncodedPacket(e,t,i){let r;return r=this.allPacketsAreKeyPackets()||1===e.randomAccessIndicator?"key":"delta",new nr(i.metadataOnly?rr:e.data,r,e.pts/ns,Math.max(t/ns,0),e.sequenceNumber,e.data.byteLength)}getFirstPacket(e){return z(this,null,function*(){const t=this.elementaryStream.firstSection;j(t);const i=hs(this.elementaryStream.demuxer,t,!0);j(i);const r=new ks(this.elementaryStream,i),n=new ys(this,r),s=yield n.readNext();if(!s)return null;const a=this.createEncodedPacket(s.packet,s.duration,e);return this.packetBuffers.set(a,n),this.packetSectionStarts.set(a,s.packet.sectionStartPos),a})}getNextPacket(e,t){return z(this,null,function*(){let i=this.packetBuffers.get(e);if(i){const r=yield i.readNext();if(!r)return null;this.packetBuffers.delete(e);const n=this.createEncodedPacket(r.packet,r.duration,t);return this.packetBuffers.set(n,i),this.packetSectionStarts.set(n,r.packet.sectionStartPos),n}const r=this.packetSectionStarts.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");const n=this.elementaryStream.demuxer,s=yield n.readSection(r,!0);j(s);const a=hs(n,s,!0);j(a);const o=new ks(this.elementaryStream,a);i=new ys(this,o);const l=e.sequenceNumber;for(;;){const e=yield i.readNext();if(!e)return null;if(e.packet.sequenceNumber>l){const r=this.createEncodedPacket(e.packet,e.duration,t);return this.packetBuffers.set(r,i),this.packetSectionStarts.set(r,e.packet.sectionStartPos),r}}})}getNextKeyPacket(e,t){return z(this,null,function*(){let i=e;for(;;){if(i=yield this.getNextPacket(i,t),!i)return null;if("key"===i.type)return i}})}getPacket(e,t){return this.doPacketLookup(e,!1,t)}getKeyPacket(e,t){return this.doPacketLookup(e,!0,t)}doPacketLookup(e,t,i){return z(this,null,function*(){var r,n,s,a,o,l;const c=Ce(e*ns),u=this.elementaryStream.demuxer,{reader:d,seekChunkSize:h}=u,f=this.elementaryStream.pid,m=(e,t,i)=>z(this,null,function*(){let r=e;for(;re.pts),T=-1!==b?y[b]:null;if(T&&c-T.pts<45e3)k=T.sectionStartPos;else{let e=0;if(null!==d.fileSize){const t=Math.ceil(d.fileSize/h);if(t>1){let i=0,r=t-1;for(e=i;i<=r;){const t=Math.floor((i+r)/2),n=_e(t*h,u.packetStride)+g.sectionStartPos,s=n+h,a=yield m(n,s,!1);a?a.pesPacketHeader.pts<=c?(e=t,i=t+1):r=t-1:r=t-1}}}k=_e(e*h,u.packetStride)+g.sectionStartPos}const v=yield m(k,null!=(r=d.fileSize)?r:1/0,!1);let S=null!=(n=null==v?void 0:v.pesPacketHeader)?n:null;S||(S=g);const w=this.getReorderSize(),P=(e,t)=>z(this,null,function*(){var r,n;const s=yield u.readSection(e,!0);j(s);const a=hs(u,s,!0);j(a);const o=new ks(this.elementaryStream,a),l=new ys(this,o);for(;;){if((null!=(n=null==(r=X(l.presentationOrderPackets))?void 0:r.pts)?n:-1/0)>=c)break;if(!(yield l.readNextPacket()))break}const d=Te(l.presentationOrderPackets,t);if(-1===d)return null;const h=l.presentationOrderPackets[d],f=0===d?0:h.pts-l.presentationOrderPackets[d-1].pts;for(;l.decodeOrderPackets[0]!==h;)l.decodeOrderPackets.shift();l.lastDuration=f;const m=yield l.readNext();j(m);const p=this.createEncodedPacket(m.packet,m.duration,i);return this.packetBuffers.set(p,l),this.packetSectionStarts.set(p,m.packet.sectionStartPos),p});if(!t||this.allPacketsAreKeyPackets()){e:for(;;){let e=S.sectionStartPos+u.packetStride;for(;;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,!1);if(t){const e=ds(u,t,!1);if(e&&null!==e.pts){if(e.pts>c)break e;S=e,gs(this.elementaryStream,S);break}}}e+=u.packetStride}}e:for(let e=0;e=u.packetOffset;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,!1);if(t){const e=ds(u,t,!1);if(e&&null!==e.pts){S=e;break}}}e-=u.packetStride}}return P(S.sectionStartPos,e=>e.pts<=c)}{let e=k,t=null;const i=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let r=null;const n=e<=g.sectionStartPos;let k,y=null;if(n)k=g,y=p;else{const t=yield m(e,null!=(s=d.fileSize)?s:1/0,i);k=null!=(a=null==t?void 0:t.pesPacketHeader)?a:null,y=null!=(o=null==t?void 0:t.section)?o:null}let b=!1,T=0;e:for(;k&&!(null!==t&&k.sectionStartPos>=t);){if(k.pts<=c){let e;if(this.elementaryStream.canBeTrustedWithKeyPackets)e=1===k.randomAccessIndicator;else{j(y);const t=hs(u,y,!0);j(t);const i=new ks(this.elementaryStream,t);yield i.markNextPacket(),e=1===(null==(l=i.suppliedPacket)?void 0:l.randomAccessIndicator)}e&&(r=k)}if(k.pts>c&&(b=!0),b&&(T++,T>w))break;let e=k.sectionStartPos+u.packetStride;for(;;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,i);if(t){const e=ds(u,t,!1);if(e&&null!==e.pts){k=e,y=t,gs(this.elementaryStream,k);break}}}e+=u.packetStride}}if(r){let e=r;if(0===T)e:for(let r=0;r=u.packetOffset;){const r=yield u.readPacketHeader(t);if(!r)break e;if(r.pid===f&&1===r.payloadUnitStartIndicator){const r=yield u.readSection(t,i);if(r){const t=ds(u,r,!1);if(t&&null!==t.pts){e=t;break}}}t-=u.packetStride}}const t=yield P(e.sectionStartPos,e=>e.pts<=c&&1===e.randomAccessIndicator);return j(t),t}if(n)return null;t=e,e=Math.max(_e(e-g.sectionStartPos-h,u.packetStride)+g.sectionStartPos,g.sectionStartPos)}}})}}class ms extends fs{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}getColorSpace(){return z(this,null,function*(){return this.elementaryStream.info.colorSpace})}canBeTransparent(){return z(this,null,function*(){return!1})}getDecoderConfig(){return z(this,null,function*(){return j(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig})}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}}class ps extends fs{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}getDecoderConfig(){return z(this,null,function*(){return j(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig})}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}}const gs=(e,t)=>{const i=e.referencePesPackets,r=pe(i,t.sectionStartPos,e=>e.sectionStartPos);if(r>=0){const n=i[r];if(t.pts<=n.pts)return!1;const s=e.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-n.sectionStartPos=e?e:this.bufferData(e-t).then(()=>Math.min(this.endPos-this.currentPos,e))}getCurrentPesPacket(){const e=this.pesPackets[this.currentPesPacketIndex];return j(e),e}bufferData(e){return z(this,null,function*(){const t=this.endPos+e;for(;this.endPos=c)break;u=t;const r=o+u;if(u+3>=c){this.seekTo(r);break}const d=l[u+1],h=l[u+2],f=l[u+3];let m=0;if(0===d&&0===h&&1===f?m=4:0===d&&1===h&&(m=3),0===m){u++;continue}const p=r;null!=n||(n=p);const g=u+m,k=g+i,y=6;if(k+("avc"===e?y:1)>c){this.seekTo(r);break}const b=l[g];let T,v,S;if("avc"===e)T=Ct(b),v=T===Tt.NON_IDR_SLICE||T===Tt.SLICE_DPA||T===Tt.IDR,S=T===Tt.SEI||T===Tt.SPS||T===Tt.PPS||T===Tt.AUD;else{T=Ut(b);if(((1&b)<<5|l[g+1]>>3)>0){u+=m;continue}v=T<=St.RASL_R||T>=St.BLA_W_LP&&T<=21,S=T>=St.VPS_NUT&&T<=37||T===St.PREFIX_SEI_NUT||T>=41&&T<=44||T>=48&&T<=55}let w=!1;if(v){let t;if("avc"===e){const e=l.subarray(k,k+y),i=$(new ht(e));t=!s||i<=a,a=i}else t=l[k]>>7===1;t&&(s?w=!0:s=!0)}else S&&s&&(w=!0);if(w){const e=p-n;return this.seekTo(n),this.supplyPacket(e,0)}u+=m}if(rn){const e=this.endPos-n;return this.seekTo(n),this.supplyPacket(e,0)}}else{const n=r.info.codec,s=128;for(;;){let a=this.ensureBuffered(s);Xe(a)&&(a=yield a);const o=this.currentPos;for(;this.currentPos-o>6,a=63&i[4];if(3===n||a>37){this.seekTo(e+1);continue}const o=hi[3*a+n];j(void 0!==o),this.seekTo(e),t=this.ensureBuffered(o),Xe(t)&&(t=yield t);const l=Math.round(13824e4/r.info.sampleRate);return this.supplyPacket(t,l)}if("eac3"===n){if(11!==s)continue;this.skip(-1);const e=this.currentPos;let t=this.ensureBuffered(5);if(Xe(t)&&(t=yield t),t<5)return;const i=this.readBytes(5);if(11!==i[0]||119!==i[1]){this.seekTo(e+1);continue}const n=2*(((7&i[2])<<8|i[3])+1),a=3===i[4]>>6?3:i[4]>>4&3,o=fi[a];this.seekTo(e),t=this.ensureBuffered(n),Xe(t)&&(t=yield t);const l=256*o,c=Math.round(l*ns/r.info.sampleRate);return this.supplyPacket(t,c)}if("dts"===n){if(127!==s&&100!==s)continue;this.skip(-1);const n=this.currentPos;let a=this.ensureBuffered(18);if(Xe(a)&&(a=yield a),a<18)return;const o=this.readBytes(18),l=Ci(o);let c=l?null:Bi(o);if(!l&&!c){this.seekTo(n+1);continue}if(c&&!c.asset){this.seekTo(n);const t=Math.min(c.frameSize,4096);let i=this.ensureBuffered(t);Xe(i)&&(i=yield i),c=null!=(e=Bi(this.readBytes(i)))?e:c}let u=l?l.frameSize:c.frameSize;if(l){let e=4*Math.ceil(l.frameSize/4);for(;;){this.seekTo(n);const t=e+10;let i=this.ensureBuffered(t);if(Xe(i)&&(i=yield i),i=0)}readNext(){return z(this,null,function*(){if(0===this.decodeOrderPackets.length){if(!(yield this.readNextPacket()))return null}yield this.ensureCurrentPacketHasNext();const e=this.decodeOrderPackets[0],t=this.presentationOrderPackets.indexOf(e);let i;if(j(-1!==t),t===this.presentationOrderPackets.length-1)i=this.lastDuration;else{i=this.presentationOrderPackets[t+1].pts-e.pts,this.lastDuration=i}for(this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){const e=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(e))break;this.presentationOrderPackets.shift()}return{packet:e,duration:i}})}readNextPacket(){return z(this,null,function*(){if(this.reachedEnd)return!1;let e;return this.context.suppliedPacket||(yield this.context.markNextPacket()),e=this.context.suppliedPacket,this.context.suppliedPacket=null,e?(this.decodeOrderPackets.push(e),this.processPacketThroughReorderBuffer(e),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)})}ensureCurrentPacketHasNext(){return z(this,null,function*(){const e=this.decodeOrderPackets[0];for(j(e);;){const t=this.presentationOrderPackets.indexOf(e);if(-1!==t&&t<=this.presentationOrderPackets.length-2)break;if(!(yield this.readNextPacket()))break}})}processPacketThroughReorderBuffer(e){if(this.reorderBuffer.push(e),this.reorderBuffer.length>this.reorderSize){let e=0;for(let i=1;ie.pts-t.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}}const bs="application/vnd.apple.mpegurl",Ts="#EXT-X-STREAM-INF:",vs="#EXT-X-I-FRAME-STREAM-INF:",Ss="#EXT-X-MEDIA:",ws="#EXTINF:",Ps="#EXT-X-MAP:",Is="#EXT-X-KEY:",xs="#EXT-X-MEDIA-SEQUENCE:",Cs="#EXT-X-BYTERANGE:",Bs="#EXT-X-PROGRAM-DATE-TIME:",Es="#EXT-X-TARGETDURATION:",_s="#EXT-X-PLAYLIST-TYPE:",Rs=e=>0===e.length||e.startsWith("#")&&!e.startsWith("#EXT");class Fs{constructor(e){this._attributes={};let t="",i="",r=!1,n=!1;for(let s=0;sz(this,null,function*(){const e=[];if(this.trackDeclarations){for(const t of this.trackDeclarations)if("video"===t.type){const i=et(e,e=>"video"===e.getType())+1;e.push(new Ms(this,t,i))}else if("audio"===t.type){const i=et(e,e=>"audio"===e.getType())+1;e.push(new Ns(this,t,i))}}else{if(this.firstSegment=yield this.getFirstSegment({}),!this.firstSegment)return[];const t=this.getInputForSegment(this.firstSegment),i=yield t.getTracks();for(const r of i)if("video"===r.type){const t=et(e,e=>"video"===e.getType())+1;e.push(new Ms(this,{id:e.length+1,type:"video"},t))}else if("audio"===r.type){const t=et(e,e=>"audio"===e.getType())+1;e.push(new Ns(this,{id:e.length+1,type:"audio"},t))}}return e}))()})}getFirstTimestampForInput(e){return z(this,null,function*(){const t=this.firstTimestampCache.get(e);if(void 0!==t)return t;const i=yield e.getFirstTimestamp();return this.firstTimestampCache.set(e,i),i})}getMediaOffset(e,t){return z(this,null,function*(){var i;const r=null!=(i=e.firstSegment)?i:e;let n;if(this.firstSegmentFirstTimestamps.has(r))n=this.firstSegmentFirstTimestamps.get(r);else{const e=this.getInputForSegment(r);n=yield this.getFirstTimestampForInput(e),this.firstSegmentFirstTimestamps.set(r,n)}if(r===e)return r.timestamp-n;const s=yield this.getFirstTimestampForInput(t),a=e.timestamp-r.timestamp,o=s-n-a;return Math.abs(o)<=Math.min(.25,a)?r.timestamp-n:e.timestamp-s})}dispose(){for(const e of this.inputCache)e.input.dispose();this.inputCache.length=0}}class Ds{constructor(e,t,i){this.packetInfos=new WeakMap,this.hydrationPromise=null,this.firstInputTrack=null,this.firstSegment=null,this.segmentedInput=e,this.decl=t,this.number=i}hydrate(){var e;return null!=(e=this.hydrationPromise)?e:this.hydrationPromise=(()=>z(this,null,function*(){var e,t;if(null!=(e=this.segmentedInput).firstSegment||(e.firstSegment=yield this.segmentedInput.getFirstSegment({})),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let i=this.segmentedInput.firstSegment,r=null;for(;i;){const e=this.segmentedInput.getInputForSegment(i);if(r=null!=(t=(yield e.getTracks()).find(e=>e.type===this.decl.type&&e.number===this.number))?t:null,r)break;i=yield this.segmentedInput.getNextSegment(i,{})}if(!r)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=r,this.firstSegment=i}))()}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(e){return this.firstInputTrack?e():this.hydrate().then(e)}getDecoderConfig(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}getHasOnlyKeyPackets(){return this.delegate(()=>{var e,t,i;return null!=(i=null==(t=(e=this.firstInputTrack._backing).getHasOnlyKeyPackets)?void 0:t.call(e))?i:null})}getPairingMask(){return BigInt("1")}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}isRelativeToUnixEpoch(){return z(this,null,function*(){return yield this.hydrate(),j(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.unixEpochTimestamp===this.segmentedInput.firstSegment.timestamp})}getUnixTimeForTimestamp(e){return this.segmentedInput.getUnixTimeForTimestamp(e)}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(e){return this.segmentedInput.getDurationFromMetadata(e)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}createAdjustedPacket(e,t,i){return z(this,null,function*(){j(e.sequenceNumber>=0),j(this.segmentedInput.firstSegment);const r=yield this.segmentedInput.getMediaOffset(t,i.input),n=t.timestamp-this.segmentedInput.firstSegment.timestamp,s=e.clone({timestamp:Ee(e.timestamp+r,yield i.getTimeResolution()),sequenceNumber:Math.floor(1e8*n)+e.sequenceNumber});return this.packetInfos.set(s,{segment:t,track:i,sourcePacket:e}),s})}getFirstPacket(e){return z(this,null,function*(){var t;yield this.hydrate(),j(this.firstInputTrack),j(this.firstSegment);let i=this.firstInputTrack,r=this.firstSegment;for(;;){if(i){const t=yield i._backing.getFirstPacket(e);if(t)return this.createAdjustedPacket(t,r,i)}if(r=yield this.segmentedInput.getNextSegment(r,{skipLiveWait:e.skipLiveWait}),!r)break;const n=this.segmentedInput.getInputForSegment(r);i=null!=(t=(yield n.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number))?t:null}return null})}getNextPacket(e,t){return this._getNextInternal(e,t,!1)}getNextKeyPacket(e,t){return this._getNextInternal(e,t,!0)}_getNextInternal(e,t,i){return z(this,null,function*(){const r=this.packetInfos.get(e);if(!r)throw new Error("Packet was not created from this track.");const n=i?yield r.track._backing.getNextKeyPacket(r.sourcePacket,t):yield r.track._backing.getNextPacket(r.sourcePacket,t);if(n)return this.createAdjustedPacket(n,r.segment,r.track);let s=r.segment;for(;;){const e=yield this.segmentedInput.getNextSegment(s,{skipLiveWait:t.skipLiveWait});if(!e)return null;const i=this.segmentedInput.getInputForSegment(e),n=(yield i.getTracks()).find(e=>e.type===r.track.type&&e.number===r.track.number);if(!n){s=e;continue}const a=yield n._backing.getFirstPacket(t);return a?this.createAdjustedPacket(a,e,n):null}})}getPacket(e,t){return this._getPacketInternal(e,t,!1)}getKeyPacket(e,t){return this._getPacketInternal(e,t,!0)}_getPacketInternal(e,t,i){return z(this,null,function*(){let r=yield this.segmentedInput.getSegmentAt(e,{skipLiveWait:t.skipLiveWait});if(!r)return null;for(yield this.hydrate();r;){const n=this.segmentedInput.getInputForSegment(r),s=(yield n.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number);if(!s){r=yield this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait});continue}const a=yield this.segmentedInput.getMediaOffset(r,n),o=e-a,l=i?yield s._backing.getKeyPacket(o,t):yield s._backing.getPacket(o,t);if(l)return this.createAdjustedPacket(l,r,s);r=yield this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait})}return null})}}class Ms extends Ds{getType(){return"video"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getCodedWidth(){return this.delegate(()=>this.firstInputTrack._backing.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.firstInputTrack._backing.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelHeight())}getRotation(){return this.delegate(()=>this.firstInputTrack._backing.getRotation())}getColorSpace(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getColorSpace())})}canBeTransparent(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.canBeTransparent())})}getDecoderConfig(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}}class Ns extends Ds{getType(){return"audio"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getNumberOfChannels(){return this.delegate(()=>this.firstInputTrack._backing.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.firstInputTrack._backing.getSampleRate())}getDecoderConfig(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}}Ye();const Os=1/0;"undefined"!==typeof FinalizationRegistry&&new FinalizationRegistry(e=>{e()});class zs extends st{constructor(){super(),this._disposed=!1,this._refCount=0,this._usedForHls=!1,this._refFinalizationRegistry=null,this._sizePromise=null,this.onread=null,"undefined"!==typeof FinalizationRegistry&&(this._refFinalizationRegistry=new FinalizationRegistry(e=>{e._decrementRefCount()}))}getSizeOrNull(){return z(this,null,function*(){var e;if(this._disposed)throw new el;return null!=(e=this._sizePromise)?e:this._sizePromise=(()=>z(this,null,function*(){let e=this._getFileSize();return void 0!==e||(yield this._read(0,1,0,Os),e=this._getFileSize(),j(void 0!==e)),e}))()})}getSize(){return z(this,null,function*(){if(this._disposed)throw new el;const e=yield this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e})}slice(e,t){if(!Number.isInteger(e)||e<0)throw new TypeError("offset must be a non-negative integer.");if(void 0!==t&&(!Number.isInteger(t)||t<0))throw new TypeError("length, when provided, must be a non-negative integer.");return new ea(this,e,t)}_dispatchRead(e,t){var i;null==(i=this.onread)||i.call(this,e,t),this._emit("read",{start:e,end:t})}ref(){return new Ls(this)}_incrementRefCount(){this._refCount++}_decrementRefCount(){this._refCount--,0===this._refCount&&(this._dispose(),this._disposed=!0)}}class Ls{constructor(e){var t;if(this._freed=!1,e._disposed)throw new Error("Cannot ref a disposed source.");e._incrementRefCount(),null==(t=e._refFinalizationRegistry)||t.register(this,e,this),this._source=e}get source(){if(!this._source)throw new Error("Can't get source; ref has already been freed.");return this._source}get freed(){return this._freed}free(){var e;if(this._freed)throw new Error("Illegal operation: double free on SourceRef.");const t=this.source;j(t._refCount>0),t._decrementRefCount(),null==(e=t._refFinalizationRegistry)||e.unregister(this),this._freed=!0,this._source=null}[Symbol.dispose](){this.freed||this.free()}}class Us extends zs{constructor(e,t){if("string"!==typeof e)throw new TypeError("rootPath must be a string.");if("function"!==typeof t)throw new TypeError("requestHandler must be a function.");super(),this.rootPath=e,this.requestHandler=t}_resolveRequest(e){const t=this.requestHandler(e),i=e=>{var t;if(!(e instanceof zs||e instanceof Ls))throw new TypeError("requestHandler must return or resolve to a Source or SourceRef.");const i=e instanceof zs?e.ref():e;return(t=i.source)._usedForHls||(t._usedForHls=this._usedForHls),i};return Xe(t)?t.then(i):i(t)}}const qs=(e,t)=>e.path===t.path;class Ws extends Us{constructor(){super(...arguments),this._root=null,this._rootRequest=null}_read(e,t,i,r){if(!this._root){if(!this._rootRequest){const e=this._resolveRequest({path:this.rootPath,isRoot:!0}),t=e=>{const 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provided, must be a boolean.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(),this._readers=new WeakMap,this._blob=e,this._options=t,this._orchestrator=new Zs({maxCacheSize:null!=(i=t.maxCacheSize)?i:8*B(2,20),maxWorkerCount:4,runWorker:this._runWorker.bind(this),onIdleWorkerRemoved:e=>{const t=this._readers.get(e);t&&(this._readers.delete(e),null==Hs||Hs.unregister(e),t.cancel().catch(()=>{}))},prefetchProfile:Js.fileSystem,handleUnhandledError:t.handleUnhandledError}),this._orchestrator.fileSize=e.size}_getFileSize(){return this._orchestrator.fileSize}_read(e,t,i,r){return this._orchestrator.read(e,t,i,r)}_runWorker(e){return z(this,null,function*(){j(e.strictTarget);let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!Ue()&&!1!==this._options.useStreamReader){t=this._blob.slice(e.currentPos).stream().getReader(),null==Hs||Hs.register(e,t,e)}else t=null;this._readers.set(e,t)}for(;e.currentPos{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))&&"undefined"!==typeof window){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(i instanceof Request?i.url:i,window.location.href).origin)}catch(r){}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return lt._warn("Request will not be retried because a CORS error was suspected due to different origins. 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The used fetch function must provide the response body as a ReadableStream.");if(206!==n.status){if(this._sequentialBacking)return void n.body.cancel();if(!this._usedForHls){const e=new URL(this._url instanceof Request?this._url.url:this._url,"undefined"!==typeof window?window.location.href:void 0);"null"===e.origin||e.pathname.endsWith(".m3u8")||e.pathname.endsWith(".m3u")||Xs.has(e.origin)||(lt._warn(`HTTP server (origin ${e.origin}) did not respond to a range request with 206 Partial Content, meaning the resource will now be streamed sequentially, with old data being evicted from the cache. Reads into evicted regions will throw. To enable efficient media file streaming across a network, please make sure your server supports range requests. Alternatively, set maxCacheSize to Infinity in the UrlSource options to keep the entire resource in memory.`),Xs.add(e.origin))}return void this._transitionToSequentialMode(n.body)}const s=n.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted)return r.abort(),void this._orchestrator.signalWorkerStoppedRunning(e);let t;try{t=yield s.read()}catch(i){if(this._disposed)throw i;const e=this._getRetryDelay(1,i,this._url);if(null!==e){lt._error("Error while reading response stream. 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Attempting to resume.",s),yield nt(1e3*e);const a=yield Oe(null!=(n=this._options.fetchFn)?n:fetch,this._url,Me(this._requestInit,{headers:{Range:`bytes=${i}-`}}),this._getRetryDelay,()=>this._disposed);if(!a.ok)throw new Error(`Error fetching ${String(this._url)}: ${a.status} ${a.statusText}`);if(!a.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");t=a.body.getReader(),r=206===a.status?0:i;continue}if(a.done)return void e.close();let o=a.value;if(r>0){const e=Math.min(r,o.length);r-=e,o=o.subarray(e)}if(0!==o.length)return i+=o.length,void e.enqueue(o)}}),cancel:()=>t.cancel()}),s=new Ys(n,{maxCacheSize:this._orchestrator.options.maxCacheSize,handleUnhandledError:this._options.handleUnhandledError});s._endIndex=this._orchestrator.fileSize,s._cacheMissErrorMessage="Attempted to read data from an already-evicted part of the cache. Because the HTTP server did not honor the range request, data can only be read sequentially, with old data being evicted from the cache. To fix this issue, either ensure your server responds to range requests with 206 Partial Content, or set maxCacheSize to Infinity in the UrlSource options. Note that the latter will store the entire file in the cache if needed, no matter how large.",s.on("read",({start:e,end:t})=>this._dispatchRead(e,t)),this._sequentialBacking=s;const a=new Set;for(const o of this._orchestrator.workers){for(const e of o.pendingSlices)a.add(e);o.aborted=!0,o.pendingSlices.length=0}for(const o of this._orchestrator.queuedReads)for(const e of o.pendingSlices)a.add(e);this._orchestrator.workers.length=0,this._orchestrator.queuedReads.length=0;for(const o of a){const e=s._read(o.start,o.start+o.bytes.length);Xe(e)?e.then(e=>{e?(j(e.offset===o.start),o.resolve(e.bytes)):o.resolve(null)},e=>o.reject(e)):(j(null===e),o.resolve(null))}}_dispose(){this._orchestrator.dispose(),this._sequentialBacking&&(this._sequentialBacking._disposed=!0,this._sequentialBacking._dispose())}}const Gs=/^bytes=(\d+)-(\d*)$/,Qs=e=>{const t=Gs.exec(e.trim());if(!t)return null;const i=Number(t[1]),r=""===t[2]?null:Number(t[2]);return null!==r&&rthis._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const i=pe(this._cache,e,e=>e.start),r=-1!==i?this._cache[i]:null;if(r&&r.start<=e&&t<=r.end)return{bytes:r.bytes,view:r.view,offset:r.start};let n=e;const s=new Uint8Array(t-e);if(-1!==i)for(let c=i;c=t)break;const r=Math.max(e,i.start);r>n&&this._throwDueToCacheMiss();const a=Math.min(t,i.end);rn&&this._throwDueToCacheMiss();const{promise:a,resolve:o,reject:l}=ke();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:l}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0;else{if(!this._handleUnhandledError)throw e;this._handleUnhandledError(e)}})),a}_throwDueToCacheMiss(){throw new Error(this._cacheMissErrorMessage)}_pull(){return z(this,null,function*(){for(null!=this._reader||(this._reader=this._stream.getReader());this._currentIndex0;){const e=this._cache[0];if(this._maxRequestedIndex-e.end<=this._maxCacheSize)break;this._cache.shift()}this._currentIndex+=t.byteLength}this._pulling=!1})}_dispose(){var e;for(const t of this._pendingSlices)t.reject(new el);this._pendingSlices.length=0,this._cache.length=0,null==(e=this._reader)||e.cancel()}}const Js={fileSystem:(e,t)=>{const i=B(2,16);return{start:e=Math.floor((e-i)/i)*i,end:t=Math.ceil((t+i)/i)*i}},network:(e,t,i)=>{const r=B(2,16);e=Math.max(0,Math.floor((e-r)/r)*r);for(const n of i){const i=8*B(2,20),r=Math.max((n.startPos+n.targetPos)/2,n.targetPos-i);if(Ge(e,t,r,n.targetPos)){const e=n.targetPos-n.startPos,r=Math.ceil((e+1)/i)*i,s=B(2,Math.ceil(Math.log2(e+1))),a=Math.min(s,r);t=Math.max(t,n.startPos+a)}}return{start:e,end:t=Math.max(t,e+js)}}};class Zs{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1,this.queuedReads=[]}read(e,t,i,r){var n;j(!this.disposed);const s=this.options.prefetchProfile(e,t,this.workers),a=Math.max(s.start,i),o=Math.min(s.end,null!=(n=this.fileSize)?n:1/0,r);j(a<=e&&t<=o);let l=null;const c=pe(this.cache,e,e=>e.start),u=-1!==c?this.cache[c]:null;u&&u.start<=e&&t<=u.end&&(u.age=this.nextAge++,l={bytes:u.bytes,view:u.view,offset:u.start});const d=pe(this.cache,a,e=>e.start),h=l?null:new Uint8Array(t-e);let f=0,m=a;const p=[];if(-1!==d){for(let i=d;i=o)break;if(r.end<=a)continue;const n=Math.max(a,r.start),s=Math.min(o,r.end);if(j(n<=s),m=h.length&&(l={bytes:h,view:J(h),offset:e}),0===p.length)return j(l),l;const{promise:g,resolve:k,reject:y}=ke(),b=[];for(const v of p){const i=Math.max(e,v.start),r=Math.min(t,v.end);i===v.start&&r===v.end?b.push(v):ie.hole.start),i=-1!==t?this.queuedReads[t]:null;for(i&&v.start<=i.hole.end?(i.hole.end=Math.max(i.hole.end,v.end),i.strictTarget&&(i.strictTarget=e),T&&i.pendingSlices.push(T)):(t++,i={hole:{start:v.start,end:v.end},strictTarget:e,pendingSlices:T?[T]:[],age:this.nextAge++},this.queuedReads.splice(t,0,i));t+1i.hole.end)break;i.hole.end=Math.max(i.hole.end,e.hole.end),i.pendingSlices.push(...e.pendingSlices),i.strictTarget&&(i.strictTarget=e.strictTarget),i.age=Math.min(i.age,e.age),this.queuedReads.splice(t+1,1)}}}return l?g.catch(e=>{if(!this.disposed){if(!this.options.handleUnhandledError)throw e;this.options.handleUnhandledError(e)}}):(j(h),l=g.then(t=>t&&{bytes:t,view:J(t),offset:e})),l}checkHoleAgainstWorker(e,t,i){const r=B(2,17);if(Ge(t.start-r,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end);for(let t=0;t=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i{if(e.running=!1,e.pendingSlices.length>0)e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0;else if(!e.aborted&&!this.disposed){if(!this.options.handleUnhandledError)throw t;this.options.handleUnhandledError(t)}}).finally(()=>{if(!e.running&&this.queuedReads.length>0){let e=0;for(let r=1;re.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;at.start&&(t.start=s),t.end<=t.start&&(i.holes.splice(e,1),e--)}0===i.holes.length&&(i.resolve(i.bytes),e.pendingSlices.splice(a,1),a--)}for(let a=0;ae){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t=e){for(const e of i.pendingSlices)e.resolve(null);this.queuedReads.splice(t,1),t--}else if(i.hole.end>e){i.hole.end=e,i.strictTarget=!0;for(let t=0;t=e&&(r.resolve(null),i.pendingSlices.splice(t,1),t--)}}}}signalWorkerStoppedRunning(e){e.running=!1,e.aborted||(e.pendingSlices.length=0)}onWorkerFinished(e){var t,i;const r=this.workers.indexOf(e);j(-1!==r),e.running=!1,this.workers.splice(r,1),null==(i=(t=this.options).onIdleWorkerRemoved)||i.call(t,e),null===this.fileSize&&this.supplyFileSize(e.currentPos);for(const n of e.pendingSlices)n.resolve(null)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=pe(this.cache,e.start,e=>e.start)+1;if(t>0){const i=this.cache[t-1];if(i.end>=e.end)return;if(i.end>e.start){const r=new Uint8Array(e.end-i.start);r.set(i.bytes,0),r.set(e.bytes,e.start-i.start),this.currentCacheSize+=e.end-i.end,i.bytes=r,i.view=J(r),i.end=e.end,t--,e=i}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let i=t+1;i=t.end){this.cache.splice(i,1),this.currentCacheSize-=t.bytes.length,i--;continue}const r=new Uint8Array(t.end-e.start);r.set(e.bytes,0),r.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=r,e.view=J(r),e.end=t.end,this.cache.splice(i,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let i=1;ithis._length)return null;const n=this._baseSource._read(this._offset+e,this._offset+t,this._offset+i,this._offset+r),s=e=>e?(e.offset-=this._offset,e):null;return Xe(n)?n.then(s):s(n)}_dispose(){var e;null==(e=this._ref)||e.free()}ref(){return null!=this._ref||(this._ref=this._baseSource.ref()),super.ref()}}var ta=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,n;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(n=r)}if("function"!==typeof r)throw new TypeError("Object 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Fs(e.slice(11)),i=t.get("uri");if(!i)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");const r=t.get("byterange");let a=null;if(null!==r&&(a=P(r)),a&&null===a.offset)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!w){const e={path:Ze(this.rootPath,i),offset:null!=(n=null==a?void 0:a.offset)?n:0,length:null!=(s=null==a?void 0:a.length)?s:null};if("AES-128"===(null==m?void 0:m.method)&&!m.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");k={timestamp:d,unixEpochTimestamp:h,firstSegment:null,sequenceNumber:null,location:e,duration:0,encryption:m,initSegment:null,lastProgramDateTimeSeconds:T}}f=null,null===b?y=null:b=null}else if(e.startsWith(Is)){const t=new Fs(e.slice(11)),i=t.get("method");if("NONE"===i)m=null;else if("AES-128"===i){const e=t.get("uri");if(!e)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let i=null;const r=t.get("iv");if(r){if(!ra.test(r))throw new Error(`Unsupported IV format '${r}'.`);let e=r.slice(2);e=e.padStart(32,"0"),i=new Uint8Array(fr);for(let t=0;t=8&&112===i[4]&&115===i[5]&&115===i[6]&&104===i[7]){const e=J(i).getUint32(0);r=sr(i.subarray(8,Math.min(e,i.length)))}}m={method:i,psshBox:r}}}}else if(e.startsWith(xs)){const t=e.slice(22),i=Number(t);if(!Number.isInteger(i)||i<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${t}'.`);I(i)}else if(e.startsWith(Cs)){const t=P(e.slice(17));if(null===t.offset){if(null===y)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");t.offset=y}b=t,y=t.offset+t.length}else if(e.startsWith(Bs)){if(w)continue;const t=e.slice(25),i=Date.parse(t);if(!Number.isFinite(i))continue;const r=i/1e3;if(T===r)continue;if(null===T&&this.segments.length>0){const e=X(this.segments),t=r-(e.timestamp+e.duration);for(const i of this.segments)i.unixEpochTimestamp=i.timestamp+t,c&&(i.timestamp=i.unixEpochTimestamp)}T=r,h=r,c&&(d=r)}else if("#EXT-X-DISCONTINUITY"===e)g=null;else if(e.startsWith(Es)){const t=e.slice(22),i=Number(t);if(!Number.isFinite(i)||i<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${t}'.`);this.refreshInterval=i,v=i}else{if("#EXT-X-ENDLIST"===e){this.streamHasEnded=!0;break}if(e.startsWith(_s)){"vod"===e.slice(21).toLowerCase()&&(this.streamHasEnded=!0)}}}else{if("#EXTM3U"!==e)throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");u=!0}}if(!u)throw new Error("Invalid M3U8 file; no #EXTM3U header.")})}getFirstSegment(){return z(this,null,function*(){var e;return 0===this.segments.length&&(yield this.runUpdateSegments()),null!=(e=this.segments[0])?e:null})}getSegmentAt(e,t){return z(this,null,function*(){0===this.segments.length&&(yield this.runUpdateSegments());let i=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){const r=pe(this.segments,e,e=>e.timestamp);if(-1===r)return null;if(r0;for(;;){if(re.segment===r);if(n)return n.age=this.nextInputCacheAge++,n.input;let s=null;(r.initSegment||r.firstSegment)&&(s=this.getInputForSegment(null!=(t=r.initSegment)?t:r.firstSegment));const a=R(_({},this.input._formatOptions),{isobmff:R(_({},this.input._formatOptions.isobmff),{resolveKeyId:(null==(i=this.input._formatOptions.isobmff)?void 0:i.resolveKeyId)&&(e=>{if(!r.encryption||"SAMPLE-AES"!==r.encryption.method&&"SAMPLE-AES-CTR"!==r.encryption.method||!r.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(e);let t=e.psshBoxes;const{psshBox:i}=r.encryption;return null!==i.keyIds&&!i.keyIds.includes(e.keyId)||t.some(e=>ar(e,i))||(t=[...t,i]),this.input._formatOptions.isobmff.resolveKeyId(R(_({},e),{psshBoxes:t}))})})}),o=new Jo({source:new Ws(r.location.path,e=>z(this,null,function*(){var t,i;j(e.isRoot);const n=R(_({},e),{isRoot:!1});let s;const a=r.location.offset>0||null!==r.location.length;if(r.encryption&&"SAMPLE-AES"!==r.encryption.method&&"SAMPLE-AES-CTR"!==r.encryption.method)if("AES-128"===r.encryption.method){const e=r.encryption;j(e.iv);let t=yield this.input._getSourceCached(n);if(a){const e=t.source.slice(r.location.offset,null!=(i=r.location.length)?i:void 0).ref();t.free(),t=e}const o=((e,t,i)=>{let r=!1,n=0;const s=B(2,16),a=new Sr;return new ReadableStream({pull:o=>z(null,null,function*(){r||(a.init(yield t()),r=!0);const l=s+16;let c=e.requestSliceRange(n,0,l);if(Xe(c)&&(c=yield c),!c||0===c.length)throw new Error("Invalid ciphertext.");const u=c.length;if(u%16!==0)throw new Error("Invalid ciphertext.");const d=u===l?u-16:u,h=nl(c,d),f=new Uint8Array(d);for(let e=0;e16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");const t=f.subarray(0,d-e);o.enqueue(t),o.close(),i()}}),cancel:()=>{i()}})})(new tl(t.source),()=>z(this,null,function*(){const t={stack:[],error:void 0,hasError:!1};try{const i=ta(t,yield this.input._getSourceCached({path:e.keyUri,isRoot:!1},Yo),!1),r=new tl(i.source),n=yield r.requestSlice(0,fr);if(!n)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");return{key:nl(n,fr),iv:e.iv}}catch(i){t.error=i,t.hasError=!0}finally{ia(t)}}),()=>{t.free()});s=new Ys(o).ref()}else j(!1);else if(s=yield this.input._getSourceCached(n),a){const e=s.source.slice(r.location.offset,null!=(t=r.location.length)?t:void 0).ref();s.free(),s=e}return s})),formats:this.input._formats.filter(e=>!(e instanceof Ia)),initInput:null!=s?s:void 0,formatOptions:a});o._onFormatDetermined=e=>{var t,i;if(("SAMPLE-AES"===(null==(t=r.encryption)?void 0:t.method)||"SAMPLE-AES-CTR"===(null==(i=r.encryption)?void 0:i.method))&&!e._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:r,input:o,age:this.nextInputCacheAge++});if(this.inputCache.length>4){const e=tt(this.inputCache,e=>e.age);j(-1!==e),this.inputCache.splice(e,1)}return o}getLiveRefreshInterval(){return z(this,null,function*(){return 0===this.getRemainingWaitTimeMs()&&(yield this.runUpdateSegments()),this.streamHasEnded?null:this.refreshInterval})}}class aa extends ir{constructor(e){super(e),this.metadataPromise=null,this.trackBackings=null,this.internalTracks=null,this.segmentedInputs=[],this.hasMasterPlaylist=!0}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){j(this.input._rootSource instanceof Us);const e=yield this.input._reader.requestEntireFile();j(e);const t=vl(e,e.length,{ignore:Rs}),{rootPath:i}=this.input._rootSource,r=[],n=[];for(let u=1;u"video"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],a=[...new Set(n.filter(e=>"audio"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],o=yield Promise.all(r.map((e,t)=>z(this,null,function*(){var r,o,l,c;const u=[],d=e.attributes.get("codecs");let h;if(d)h=d.split(",").map(e=>e.trim());else{const t=this.getSegmentedInputForPath(e.fullPath),i=yield t.getTrackBackings(),r=yield Promise.all(i.map(e=>z(this,null,function*(){return{track:e,codec:yield e.getCodec()}})));h=yield Promise.all(r.filter(e=>null!==e.codec).map(e=>e.track.getDecoderConfig().then(e=>e.codec)))}const f=e.attributes.get("video"),m=e.attributes.get("audio"),p=h.some(e=>_i.includes(ji(e))),g=h.some(e=>Fi.includes(ji(e)));if(null!==f&&!p){if(!s.includes(f))throw new Error(`Invalid M3U8 file; variant stream references video group "${f}" which is not defined in any #EXT-X-MEDIA tags.`);const e=n.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===f&&"video"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Ze(i,t),n=this.getSegmentedInputForPath(r),s=(yield n.getTrackBackings()).find(e=>"video"===e.getType());if(!s||null===(yield s.getCodec()))break e;const a=yield s.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null});j(null!==a),h.push(a)}}if(null!==m&&!g){if(!a.includes(m))throw new Error(`Invalid M3U8 file; variant stream references audio group "${m}" which is not defined in any #EXT-X-MEDIA tags.`);const e=n.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===m&&"audio"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Ze(i,t),n=this.getSegmentedInputForPath(r),s=(yield n.getTrackBackings()).find(e=>"audio"===e.getType());if(!s||null===(yield s.getCodec()))break e;const a=yield s.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null});j(null!==a),h.push(a)}}h=[...new Set(h)];let k=null,y=null;const b=e.attributes.getAsNumber("bandwidth");j(null!==b);const T=e.attributes.getAsNumber("average-bandwidth"),v=e.attributes.get("name");for(const i of h){const d=ji(i);if(null!==d)if(_i.includes(d)){if(null!==k)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");k=i;const a=e.attributes.get("video");if(null===a){const i=e.attributes.get("resolution");let r=null,n=null;if(i){const e=i.match(/^(\d+)x(\d+)$/);e&&(r=Number(e[1]),n=Number(e[2]))}u.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:xe,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:k,pairingMask:BigInt("1")<0?r:null}})}else{if(!a.includes(r))throw new Error(`Invalid M3U8 file; variant stream references audio group "${r}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of n){const n=i.attributes.get("group-id"),s=i.attributes.get("type");if(n!==r||"audio"!==s.toLowerCase())continue;const a=null!=(l=i.attributes.get("channels"))?l:e.attributes.get("channels"),o=null!==a?Number(a.split("/")[0]):null;u.push({id:-1,demuxer:this,backingTrack:null,default:ua(i.attributes),autoselect:ua(i.attributes)||da(i.attributes),languageCode:ha(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:null!=(c=i.fullPath)?c:e.fullPath,fullCodecString:y,pairingMask:BigInt("1")<0?o:null}})}}}}return u}))),l=[],c=e=>{var t,i;const r=l.find(t=>t.fullPath===e.fullPath&&t.info.type===e.info.type);r?(r.pairingMask|=e.pairingMask,r.default||(r.default=e.default),r.autoselect||(r.autoselect=e.autoselect),r.lineNumber=Math.min(r.lineNumber,e.lineNumber),null!==e.peakBitrate&&(r.peakBitrate=Math.max(null!=(t=r.peakBitrate)?t:-1/0,e.peakBitrate)),null!==e.averageBitrate&&(r.averageBitrate=Math.max(null!=(i=r.averageBitrate)?i:-1/0,e.averageBitrate)),r.languageCode===xe&&(r.languageCode=e.languageCode)):(e.id=l.length+1,l.push(e))};for(const u of o)for(const e of u)c(e);l.sort((e,t)=>e.lineNumber-t.lineNumber),this.trackBackings=[];for(const u of l)"video"===u.info.type?this.trackBackings.push(new la(u)):this.trackBackings.push(new ca(u));this.internalTracks=l}))()}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),j(this.trackBackings),this.trackBackings})}getSegmentedInputForPath(e){let t=this.segmentedInputs.find(t=>t.path===e);if(t)return t;let i=null;if(this.internalTracks){i=this.internalTracks.filter(t=>t.fullPath===e).map(e=>({id:e.id,type:e.info.type}))}return t=new sa(this,e,i,null),this.segmentedInputs.push(t),t}getMetadataTags(){return z(this,null,function*(){return{}})}getMimeType(){return z(this,null,function*(){return bs})}dispose(){if(this.segmentedInputs){for(const e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}}class oa{constructor(e){this.internalTrack=e,this.hydrationPromise=null}hydrate(){var e;return null!=(e=this.hydrationPromise)?e:this.hydrationPromise=(()=>z(this,null,function*(){const e=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath);let t=null;const i=(yield e.getTrackBackings()).filter(e=>e.getType()===this.getType());if(1===i.length)t=i[0];else if(this instanceof la){for(const r of i)if((yield r.getCodec())===this.getCodec()){t=r;break}}else{j(this instanceof ca);for(const e of i)if((yield e.getCodec())===this.getCodec()){t=e;break}}if(!t)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=t}))()}delegate(e){return this.internalTrack.backingTrack?e():this.hydrate().then(e)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return R(_({},dt),{default:this.internalTrack.autoselect,primary:this.internalTrack.default})}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){j(this.internalTrack.demuxer.internalTracks);const e=this.internalTrack.info.type;let t=0;for(const i of this.internalTrack.demuxer.internalTracks)if(i.info.type===e&&t++,i===this.internalTrack)break;return t}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getUnixTimeForTimestamp(e){return this.delegate(()=>this.internalTrack.backingTrack.getUnixTimeForTimestamp(e))}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}getDurationFromMetadata(e){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(e)})}getLiveRefreshInterval(){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()})}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}getFirstPacket(e){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(e)})}getPacket(e,t){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getPacket(e,t)})}getKeyPacket(e,t){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(e,t)})}getNextPacket(e,t){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getNextPacket(e,t)})}getNextKeyPacket(e,t){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(e,t)})}}class la extends oa{constructor(e){super(e)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return ji(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}getColorSpace(){return z(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.getColorSpace()})}canBeTransparent(){return z(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.canBeTransparent()})}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}getDecoderConfig(){return z(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.getDecoderConfig()})}}class ca extends oa{constructor(e){super(e)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return ji(this.internalTrack.fullCodecString)}getNumberOfChannels(){return null!==this.internalTrack.info.numberOfChannels?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}getDecoderConfig(){return z(this,null,function*(){return yield this.hydrate(),this.backingAudioTrack.getDecoderConfig()})}}const ua=e=>{const t=e.get("default");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},da=e=>{const t=e.get("autoselect");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},ha=e=>{if(null===e)return xe;const t=e.split("-")[0];return t||xe};class fa{constructor(){this._isIsobmff=!1}}class ma extends fa{constructor(){super(...arguments),this._isIsobmff=!0}_getMajorBrand(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,12);if(Xe(t)&&(t=yield t),!t)return null;t.skip(4);const i=Tl(t,4);return"ftyp"!==i&&"styp"!==i?null:Tl(t,4)})}_createDemuxer(e){return new wr(e)}}class pa extends ma{_canReadInput(e){return z(this,null,function*(){const t=yield this._getMajorBrand(e);if(null!==t)return"qt "!==t;let i=0;for(let r=0;r<10;r++){let t=e._reader.requestSlice(i,8);if(Xe(t)&&(t=yield t),!t)return!1;let r=dl(t),n=8;if(1===r){let t=e._reader.requestSlice(i+8,8);if(Xe(t)&&(t=yield t),!t)return!1;r=pl(t),n=16}if(r8)return!1;if(Gr(i,r)!==qr.EBML)return!1;const n=Yr(i);if("number"!==typeof n)return!1;let s=e._reader.requestSlice(i.filePos,n);if(Xe(s)&&(s=yield s),!s)return!1;const a=i.filePos;for(;s.filePos<=a+n-2;){const e=Jr(s);if(!e)break;const{id:i,size:r}=e,n=s.filePos;if(void 0===r)return!1;switch(i){case qr.EBMLVersion:if(1!==Gr(s,r))return!1;break;case qr.EBMLReadVersion:if(1!==Gr(s,r))return!1;break;case qr.DocType:if(Zr(s,r)!==t)return!1;break;case qr.DocTypeVersion:if(Gr(s,r)>4)return!1}s.filePos=n+r}return!0})}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new Bn(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class ya extends ka{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class ba extends fa{_canReadInput(e){return z(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,Cl);if(Xe(i)&&(i=yield i),!i)break;const r=Rl(i);if(!r)break;t=i.filePos+r.size}const i=yield Fn(e._reader,t,t+4096);if(!i)return!1;const r=i.header,n=Qi(r.mpegVersionId,r.channel);let s=e._reader.requestSlice(i.startPos+n,4);if(Xe(s)&&(s=yield s),!s)return!1;const a=dl(s);if(a===$i||a===Gi)return!0;t=i.startPos+i.header.totalSize;const o=yield Fn(e._reader,t,t+4);if(!o)return!1;const l=o.header;return r.channel===l.channel&&r.sampleRate===l.sampleRate})}_createDemuxer(e){return new An(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class Ta extends fa{_canReadInput(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,12);if(Xe(t)&&(t=yield t),!t)return!1;const i=Tl(t,4);if("RIFF"!==i&&"RIFX"!==i&&"RF64"!==i)return!1;t.skip(4);return"WAVE"===Tl(t,4)})}_createDemuxer(e){return new Gn(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class va extends fa{_canReadInput(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,4);return Xe(t)&&(t=yield t),!!t&&"OggS"===Tl(t,4)})}_createDemuxer(e){return new Hn(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class Sa extends fa{_canReadInput(e){return z(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,Cl);if(Xe(i)&&(i=yield i),!i)break;const r=Rl(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSlice(t,4);return Xe(i)&&(i=yield i),!!i&&"fLaC"===Tl(i,4)})}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new is(e)}}class wa extends fa{_canReadInput(e){return z(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,Cl);if(Xe(i)&&(i=yield i),!i)break;const r=Rl(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSliceRange(t,7,9);if(Xe(i)&&(i=yield i),!i)return!1;const r=Jn(i);if(!r)return!1;if(t+=r.frameLength,i=e._reader.requestSliceRange(t,7,9),Xe(i)&&(i=yield i),!i)return!1;const n=Jn(i);return!!n&&(r.objectType===n.objectType&&r.samplingFrequencyIndex===n.samplingFrequencyIndex&&r.channelConfiguration===n.channelConfiguration)})}_createDemuxer(e){return new es(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}class Pa extends fa{_canReadInput(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,205);if(Xe(t)&&(t=yield t),!t)return!1;const i=nl(t,205);return 71===i[0]&&71===i[188]||(71===i[0]&&71===i[204]||71===i[4]&&71===i[196])})}_createDemuxer(e){return new us(e)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}}class Ia extends fa{_canReadInput(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,7);if(Xe(t)&&(t=yield t),!t)return!1;if(!("#EXTM3U"===Tl(t,7)))return!1;if(!(e._rootSource instanceof Us))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return e._rootSource._usedForHls=!0,!0})}_createDemuxer(e){return new aa(e)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return bs}}const xa=new pa,Ca=new ga,Ba=new ka,Ea=new ya,_a=new ba,Ra=new Ta,Fa=new va,Aa=new wa,Da=new Sa,Ma=new Pa,Na=new Ia,Oa=[Na,xa,Ca,Ba,Ea,Ra,Fa,Da,_a,Aa,Ma],za=[Na,xa,Ca,_a,Aa,Ma];var La=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,n=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===n)return n=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return n|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else n|=1}catch(a){i(a)}if(1===n)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});Ye();let Ua=-1/0,qa=-1/0,Wa=null;"undefined"!==typeof FinalizationRegistry&&(Wa=new FinalizationRegistry(e=>{const t=performance.now();"video"===e.type?(t-Ua>=1e3&&(lt._error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),Ua=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-qa>=1e3&&(lt._error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),qa=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));class Ha{constructor(){this._referenceCount=0,this._lastAllocationBuffer=null}}const Va=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],ja=new Set(Va);class Ka{get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(De*this.timestamp)}get microsecondDuration(){return Math.trunc(De*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){var i,r,n,s,a,o,l,c,u,d,h,f,m,p,g,k,y,b,T,v,S,w,P,I,x,C,B,E,_,R,F;if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0===t.format||!ja.has(t.format))throw new TypeError("init.format must be one of: "+Va.join(", "));if(!Number.isInteger(t.codedWidth)||t.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(t.codedHeight)||t.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.layout){if(!Array.isArray(t.layout))throw new TypeError("init.layout, when provided, must be an array.");for(const e of t.layout){if(!e||"object"!==typeof e||Array.isArray(e))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(e.offset)||e.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(e.stride)||e.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==t.visibleRect&&rt(t.visibleRect,"init.visibleRect"),void 0!==t.displayWidth&&(!Number.isInteger(t.displayWidth)||t.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(void 0!==t.displayHeight&&(!Number.isInteger(t.displayHeight)||t.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(void 0!==t.displayWidth!==(void 0!==t.displayHeight))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this.format=t.format,this.rotation=null!=(i=t.rotation)?i:0,this.timestamp=t.timestamp,this.duration=null!=(r=t.duration)?r:0;const m=null!=(n=t.layout)?n:io(t.format,t.codedWidth,t.codedHeight);let p=null!=(s=t.colorSpace)?s:null;null===p&&(p="RGBA"===this.format||"RGBX"===this.format||"BGRA"===this.format||"BGRX"===this.format?{primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:{primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.visibleRect={left:null!=(o=null==(a=t.visibleRect)?void 0:a.left)?o:0,top:null!=(c=null==(l=t.visibleRect)?void 0:l.top)?c:0,width:null!=(d=null==(u=t.visibleRect)?void 0:u.width)?d:t.codedWidth,height:null!=(f=null==(h=t.visibleRect)?void 0:h.height)?f:t.codedHeight},void 0!==t.displayWidth?(this.squarePixelWidth=this.rotation%180===0?t.displayWidth:t.displayHeight,this.squarePixelHeight=this.rotation%180===0?t.displayHeight:t.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height),this._data=t._doNotCopy?Y(e):Y(e).slice(),this._layout=m,this.colorSpace=new Ya(p)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==(null==t?void 0:t.rotation)&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==(null==t?void 0:t.timestamp)&&!Number.isFinite(null==t?void 0:t.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==(null==t?void 0:t.duration)&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");void 0!==(null==t?void 0:t.visibleRect)&&rt(t.visibleRect,"init.visibleRect"),this._data=e,this._layout=null,this.format=e.format,this.visibleRect={left:null!=(p=null==(m=e.visibleRect)?void 0:m.x)?p:0,top:null!=(k=null==(g=e.visibleRect)?void 0:g.y)?k:0,width:null!=(b=null==(y=e.visibleRect)?void 0:y.width)?b:e.codedWidth,height:null!=(v=null==(T=e.visibleRect)?void 0:T.height)?v:e.codedHeight},this.rotation=null!=(S=null==t?void 0:t.rotation)?S:0,this.squarePixelWidth=e.displayWidth,this.squarePixelHeight=e.displayHeight,this.timestamp=null!=(w=null==t?void 0:t.timestamp)?w:e.timestamp/1e6,this.duration=null!=(I=null==t?void 0:t.duration)?I:(null!=(P=e.duration)?P:0)/1e6,this.colorSpace=new Ya(e.colorSpace)}else if("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.visibleRect&&rt(t.visibleRect,"init.visibleRect"),"undefined"!==typeof VideoFrame)return new Ka(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*De),duration:Math.trunc((null!=(x=t.duration)?x:0)*De)||void 0,visibleRect:t.visibleRect&&{x:t.visibleRect.left,y:t.visibleRect.top,width:t.visibleRect.width,height:t.visibleRect.height}}),t);let i=0,r=0;if("naturalWidth"in e?(i=e.naturalWidth,r=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,r=e.videoHeight):"width"in e&&(i=Number(e.width),r=Number(e.height)),!i||!r)throw new TypeError("Could not determine dimensions.");const n=null!=(C=t.visibleRect)?C:{left:0,top:0,width:i,height:r},s=new OffscreenCanvas(n.width,n.height),a=s.getContext("2d",{alpha:We(),willReadFrequently:!0});if(!a)throw new Error("OffscreenCanvas must have support for the '2d' context in order to create a VideoSample from this data.");a.drawImage(e,-n.left,-n.top),this._data=s,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:n.width,height:n.height},this.squarePixelWidth=n.width,this.squarePixelHeight=n.height,this.rotation=null!=(B=t.rotation)?B:0,this.timestamp=t.timestamp,this.duration=null!=(E=t.duration)?E:0,this.colorSpace=new Ya({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else{if(!(e instanceof Ha))throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(this._data=e,e._referenceCount++,this.format=e.getFormat(),null!==this.format&&!Va.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:e.getCodedWidth(),height:e.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=e.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=e.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=null!=(_=t.rotation)?_:0,this.timestamp=t.timestamp,this.duration=null!=(R=t.duration)?R:0,this.colorSpace=e.getColorSpace()}this.encodeOptions=null!=(F=null==t?void 0:t.encodeOptions)?F:{},this.pixelAspectRatio=it({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),null==Wa||Wa.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return j(null!==this._data),this._data instanceof Ha?new Ka(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):Ja(this._data)?new Ka(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):this._data instanceof Uint8Array?(j(this._layout),new Ka(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions,_doNotCopy:!0})):new Ka(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions})}close(){this._closed||(null==Wa||Wa.unregister(this),this._data instanceof Ha?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Ja(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){var t;if(to(e),this._closed)throw new Error("VideoSample is closed.");if(null==(null!=(t=e.format)?t:this.format))throw new Error("Cannot get allocation size when format is null.");if(Ja(this._data))return this._data.allocationSize(e);return no(this,e).allocationSize}copyTo(e){return z(this,arguments,function*(e,t={}){var i,r;if(!ce(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(to(t),this._closed)throw new Error("VideoSample is closed.");if(null==(null!=(i=t.format)?i:this.format))throw new Error("Cannot copy video sample data when format is null.");if(j(null!==this._data),Ja(this._data))return this._data.copyTo(e,t);if(t.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(t.format)){if(!(this._data instanceof Ha)){if("undefined"===typeof VideoFrame)throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");const i=this.toVideoFrame(),r=yield i.copyTo(e,t);return i.close(),r}{const i={stack:[],error:void 0,hasError:!1};try{const n=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,n;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(n=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");n&&(r=function(){try{n.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t}(i,yield this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},null!=(r=t.colorSpace)?r:"srgb"),!1);if(!(n instanceof Ka))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(n.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${n.format}' instead.`);return yield n.copyTo(e,t)}catch(u){i.error=u,i.hasError=!0}finally{La(i)}}}const n=no(this,t);j(this.format);const s=Y(e);if(s.byteLength!(e.data instanceof Uint8Array)||!Number.isInteger(e.stride)||e.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');o=e}else if(this._data instanceof Uint8Array)j(this._layout),j(this._layout.length===a.length),o=this._layout.map((e,t)=>{const i=Math.ceil(this.codedHeight/a[t].heightDivisor);return{data:this._data.subarray(e.offset,e.offset+e.stride*i),stride:e.stride}});else{const e=this._data.getContext("2d");j(e);const t=e.getImageData(0,0,this.codedWidth,this.codedHeight);o=[{data:Y(t.data),stride:4*this.codedWidth}]}const l=[],c=a.length;for(let d=0;di.byteLength)throw new Error("Source buffer OOB read.");if(a+c>s.byteLength)throw new Error("Destination buffer OOB write.");const n=i.subarray(r,r+c);s.set(n,a),r+=t,a+=e.destinationStride}l.push(u)}if(void 0!==t.format){const e=this.format.startsWith("RGB")!==t.format.startsWith("RGB"),i=this.format.includes("X")&&t.format.includes("A");if(e||i)for(let t=0;te+t.data.byteLength,0),i=new Uint8Array(t);let r=0;const n=[];for(const s of e)i.set(s.data,r),n.push(r),r+=s.data.byteLength;return new VideoFrame(i,{format:this.format,layout:e.map((e,t)=>({offset:n[t],stride:e.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}return Ja(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?(j(this._layout),new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,layout:this._layout,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,i,r,n,s,a,o,l){let c=0,u=0,d=this.displayWidth,h=this.displayHeight,f=0,m=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(c=t,u=i,d=r,h=n,f=s,m=a,void 0!==o?(p=o,g=l):(p=d,g=h)):(f=t,m=i,void 0!==r&&(p=r,g=n)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(c))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(f))throw new TypeError("dx must be a number.");if(!Number.isFinite(m))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:c,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(c,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const y=f+p/2,b=m+g/2;e.translate(y,b),e.rotate(this.rotation*Math.PI/180);const T=this.rotation%180===0?1:p/g;e.scale(1/T,T),e.drawImage(k,c,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){var i,r,n,s,a,o,l,c,u;if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&eo(t.crop,"options.");const d=e.canvas.width,h=e.canvas.height,f=null!=(i=t.rotation)?i:this.rotation,[m,p]=f%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let g,k,y,b,T=t.crop;T&&(T=Za(T,m,p));const{sx:v,sy:S,sWidth:w,sHeight:P}=this._rotateSourceRegion(null!=(n=null==(r=t.crop)?void 0:r.left)?n:0,null!=(a=null==(s=t.crop)?void 0:s.top)?a:0,null!=(l=null==(o=t.crop)?void 0:o.width)?l:m,null!=(u=null==(c=t.crop)?void 0:c.height)?u:p,f);if("fill"===t.fit)g=0,k=0,y=d,b=h;else{const[e,i]=t.crop?[t.crop.width,t.crop.height]:[m,p],r="contain"===t.fit?Math.min(d/e,h/i):Math.max(d/e,h/i);y=e*r,b=i*r,g=(d-y)/2,k=(h-b)/2}e.save();const I=f%180===0?1:y/b;e.translate(d/2,h/2),e.rotate(f*Math.PI/180),e.scale(1/I,I),e.translate(-d/2,-h/2),e.drawImage(this.toCanvasImageSource(),v,S,w,P,g,k,y,b),e.restore()}_rotateSourceRegion(e,t,i,r,n){return 90===n?[e,t,i,r]=[t,this.squarePixelHeight-e-i,r,i]:180===n?[e,t]=[this.squarePixelWidth-e-i,this.squarePixelHeight-t-r]:270===n&&([e,t,i,r]=[this.squarePixelWidth-t-r,e,r,i]),{sx:e,sy:t,sWidth:i,sHeight:r}}_drawWithFitAndMipmapping(e,t,i){const r=e.width,n=e.height,[s,a]=i.rotation%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],o=i.crop?i.crop.width:s,l=i.crop?i.crop.height:a;let c=0;2*r0?Qa(u,d):{canvas:e,context:t,isNew:i.targetIsFresh};f.imageSmoothingQuality="high",i.fillBlack?(f.fillStyle="black",f.fillRect(0,0,u,d)):m||f.clearRect(0,0,u,d),this.drawWithFit(f,{fit:i.fit,rotation:i.rotation,crop:i.crop}),f.globalCompositeOperation="copy";for(let p=c;p>1;p--){const e=r*B(2,p),t=n*B(2,p);f.drawImage(h,0,0,e,t,0,0,e/2,t/2)}f.globalCompositeOperation="source-over",c>0&&(t.imageSmoothingQuality="high",t.globalCompositeOperation="copy",t.drawImage(h,0,0,2*r,2*n,0,0,r,n),t.globalCompositeOperation="source-over")}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(j(null!==this._data),this._data instanceof Ha||this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}transform(e){return z(this,null,function*(){var t,i,r,n,s;if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.width&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(void 0!==e.height&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(void 0!==e.roundDimensionsTo&&(!Number.isInteger(e.roundDimensionsTo)||e.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(void 0!==e.fit&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==e.width&&void 0!==e.height&&void 0===e.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==e.rotate&&![0,90,180,270].includes(e.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(void 0!==e.crop&&eo(e.crop,"options."),void 0!==e.alpha&&!["keep","discard"].includes(e.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");const a=K(this.rotation+(null!=(t=e.rotate)?t:0)),[o,l]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let c=e.crop;c&&(c=Za(c,o,l));const u=c?c.width:o,d=c?c.height:l,h=u/d;let f,m;void 0!==e.width&&void 0===e.height?(f=e.width,m=f/h):void 0===e.width&&void 0!==e.height?(m=e.height,f=m*h):void 0!==e.width&&void 0!==e.height?(f=e.width,m=e.height):(f=u,m=d),f=Be(f,null!=(i=e.roundDimensionsTo)?i:1),m=Be(m,null!=(r=e.roundDimensionsTo)?r:1);const p={width:f,height:m,fit:null!=(n=e.fit)?n:"fill",rotation:a,crop:null!=c?c:{left:0,top:0,width:o,height:l},alpha:null!=(s=e.alpha)?s:"keep"};for(const e of Xa){let t=e(this,p);if(Xe(t)&&(t=yield t),null!==t)return t}const{canvas:g,context:k,isNew:y}=Qa(p.width,p.height);return this._drawWithFitAndMipmapping(g,k,{fit:p.fit,rotation:p.rotation,crop:p.crop,targetIsFresh:y,fillBlack:"discard"===p.alpha}),new Ka(g,{timestamp:this.timestamp,duration:this.duration,rotation:0})})}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}setEncodeOptions(e){if(!e||"object"!==typeof e)throw new TypeError("newEncodeOptions must be an object.");this.encodeOptions=e}[Symbol.dispose](){this.close()}}const Xa=[],$a=[];let Ga=0;const Qa=(e,t)=>{for(const n of $a)if(n.canvas.width===e&&n.canvas.height===t)return n.age=Ga++,{canvas:n.canvas,context:n.context,isNew:!1};let i;if("undefined"!==typeof OffscreenCanvas)i=new OffscreenCanvas(e,t);else{if("undefined"===typeof window||"undefined"===typeof document)throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");i=document.createElement("canvas"),i.width=e,i.height=t}const r=i.getContext("2d",{alpha:!0,willReadFrequently:!1});if(!r)throw new Error("The '2d' canvas context is required to transform VideoSamples. Register a custom transformer using registerVideoSampleTransformer to work around this limitation.");return $a.length>=3&&$a.splice(tt($a,e=>e.age),1),$a.push({canvas:i,context:r,age:Ga++}),{canvas:i,context:r,isNew:!0}};class Ya{constructor(e){var t,i,r,n;if(void 0!==e){if(!e||"object"!==typeof e)throw new TypeError("init.colorSpace, when provided, must be an object.");const t=Object.keys(te);if(null!=e.primaries&&!t.includes(e.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${t.join(", ")}.`);const i=Object.keys(re);if(null!=e.transfer&&!i.includes(e.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${i.join(", ")}.`);const r=Object.keys(se);if(null!=e.matrix&&!r.includes(e.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${r.join(", ")}.`);if(null!=e.fullRange&&"boolean"!==typeof e.fullRange)throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}this.primaries=null!=(t=null==e?void 0:e.primaries)?t:null,this.transfer=null!=(i=null==e?void 0:e.transfer)?i:null,this.matrix=null!=(r=null==e?void 0:e.matrix)?r:null,this.fullRange=null!=(n=null==e?void 0:e.fullRange)?n:null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const Ja=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,Za=(e,t,i)=>{const r=Math.min(e.left,t),n=Math.min(e.top,i),s=Math.min(e.width,t-r),a=Math.min(e.height,i-n);return j(s>=0),j(a>=0),{left:r,top:n,width:s,height:a}},eo=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},to=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},io=(e,t,i)=>{const r=ro(e),n=[];let s=0;for(const a of r){const e=Math.ceil(t/a.widthDivisor),r=Math.ceil(i/a.heightDivisor),o=e*a.sampleBytes,l=o*r;n.push({offset:s,stride:o}),s+=l}return n},ro=e=>{const t=(e,t,i,r,n)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:i,heightDivisor:r},{sampleBytes:t,widthDivisor:i,heightDivisor:r}];return n&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:ve(e),j(!1)}},no=(e,t)=>{const i={left:0,top:0,width:e.codedWidth,height:e.codedHeight},r=t.rect,n=so(i,r,e.codedWidth,e.codedHeight,e.format),s=t.layout;let a;if(t.format&&t.format!==e.format){if(!["RGBA","RGBX","BGRA","BGRX"].includes(t.format))throw new Error("NotSupportedError: Invalid destination format.");a=t.format}else a=e.format;return oo(n,a,s)},so=(e,t,i,r,n)=>{const s=_({},e);if(void 0!==t){if(0===t.width||0===t.height)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>i)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");s.x=t.x||0,s.y=t.y||0,s.width=t.width||0,s.height=t.height||0}if(!ao(n,s))throw new TypeError("visibleRect alignment is invalid for the format.");return s},ao=(e,t)=>{if(null===e)return!0;const i=ro(e);for(let r=0;r{const r=ro(t),n=r.length;if(void 0!==i&&i.length!==n)throw new TypeError(`Layout must have ${n} planes.`);let s=0;const a=[],o=[];for(let l=0;l4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(null==e?void 0:e.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/(ho(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let i;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)i=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");i=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const r=this.numberOfFrames*this.numberOfChannels*ho(this.format);if(i.byteLength=this.numberOfFrames)throw new RangeError("frameOffset out of range");const s=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-n;if(s>this.numberOfFrames-n)throw new RangeError("frameCount out of range");const a=ho(r),o=fo(r);if(o&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!o&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(o?s:s*this.numberOfChannels)*a}copyTo(e,t){if(!ce(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!lo.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{format:i,frameCount:r,frameOffset:n}=t;let{planeIndex:s}=t,a=this.format;const o=null!=i?i:this.format;if(!o)throw new Error("Destination format not determined");const l=this.numberOfFrames,c=this.numberOfChannels,u=null!=n?n:0;if(u>=l)throw new RangeError("frameOffset out of range");const d=void 0!==r?r:l-u;if(d>l-u)throw new RangeError("frameCount out of range");const h=ho(o),f=fo(o);if(f&&s>=c)throw new RangeError("planeIndex out of range");if(!f&&0!==s)throw new RangeError("planeIndex out of range");const m=(f?d:d*c)*h;if(e.byteLength2&&o!==a)return void ko(this._data,p,a,o,c,s,u,d);try{return void this._data.copyTo(e,{planeIndex:s,frameOffset:u,frameCount:d,format:o})}catch(S){if("f32-planar"===o)throw S;a="f32-planar"}}const k=mo(a),y=ho(a),b=fo(a);let T;if(this._data instanceof co){const e=e=>{const t=this._data.getDataPlane(e);if(!(t instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");const i=l*y*(b?1:c);if(t.byteLength!==i)throw new TypeError(`Data plane ${e} has invalid size. Expected exactly ${i} bytes, got ${t.byteLength} bytes.`);return t};if(b)if(f)T=e(s),s=0;else{T=new Uint8Array(l*y*c);for(let t=0;tthis.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t0)for(let r=0;r0&&this.copyTo(n,{planeIndex:0,format:this.format,frameOffset:e,frameCount:i});return new uo({data:n,format:this.format,sampleRate:this.sampleRate,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp+e/this.sampleRate})}close(){this._closed||(null==Wa||Wa.unregister(this),this._data instanceof co?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):go(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof co?this._createAudioDataFromData():go(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(fo(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let i=0;i0;){const n=Math.min(s,o),l=new Float32Array(i*n);for(let t=0;t0;){const n=Math.min(s,o),c=new Float32Array(i*n);for(let t=0;t{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},fo=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},mo=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},po=e=>{switch(e){case"u8":case"u8-planar":return(e,t,i)=>e.setUint8(t,Ie(127.5*(i+1),0,255));case"s16":case"s16-planar":return(e,t,i)=>e.setInt16(t,Ie(Math.round(32767*i),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,i)=>e.setInt32(t,Ie(Math.round(2147483647*i),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,i)=>e.setFloat32(t,i,!0)}},go=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,ko=(e,t,i,r,n,s,a,o)=>{const l=mo(i),c=po(r),u=ho(i),d=ho(r),h=fo(i);if(fo(r))if(h){const r=new ArrayBuffer(o*u),n=J(r);e.copyTo(r,{planeIndex:s,frameOffset:a,frameCount:o,format:i});for(let e=0;e{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(void 0!==e.skipLiveWait&&"boolean"!==typeof e.skipLiveWait)throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},vo=e=>{if(!Je(e))throw new TypeError("timestamp must be a number.")},So=(e,t,i)=>i.verifyKeyPackets?t.then(t=>z(null,null,function*(){if(!t||"delta"===t.type)return t;const i=yield e.determinePacketType(t);return i&&(t.type=i),t})):t;class wo{constructor(e){if(!(e instanceof zo))throw new TypeError("track must be an InputTrack.");this._track=e}getFirstPacket(){return z(this,arguments,function*(e={}){if(To(e),this._track.input._disposed)throw new el;return So(this._track,this._track._backing.getFirstPacket(e),e)})}getFirstKeyPacket(){return z(this,arguments,function*(e={}){To(e);const t=yield this.getFirstPacket(e);return t?"key"===t.type?t:this.getNextKeyPacket(t,e):null})}getPacket(e){return z(this,arguments,function*(e,t={}){if(vo(e),To(t),this._track.input._disposed)throw new el;return So(this._track,this._track._backing.getPacket(e,t),t)})}getNextPacket(e){return z(this,arguments,function*(e,t={}){if(!(e instanceof nr))throw new TypeError("packet must be an EncodedPacket.");if(To(t),this._track.input._disposed)throw new el;return So(this._track,this._track._backing.getNextPacket(e,t),t)})}getKeyPacket(e){return z(this,arguments,function*(e,t={}){if(vo(e),To(t),this._track.input._disposed)throw new el;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const i=yield this._track._backing.getKeyPacket(e,t);if(!i)return i;j("key"===i.type);return"delta"===(yield this._track.determinePacketType(i))?this.getKeyPacket(i.timestamp-1/(yield this._track.getTimeResolution()),t):i})}getNextKeyPacket(e){return z(this,arguments,function*(e,t={}){if(!(e instanceof nr))throw new TypeError("packet must be an EncodedPacket.");if(To(t),this._track.input._disposed)throw new el;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const i=yield this._track._backing.getNextKeyPacket(e,t);if(!i)return i;j("key"===i.type);return"delta"===(yield this._track.determinePacketType(i))?this.getNextKeyPacket(i,t):i})}packets(e,t,i={}){if(void 0!==e&&!(e instanceof nr))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!(null==i?void 0:i.metadataOnly))throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof nr))throw new TypeError("endPacket must be an EncodedPacket.");if(To(i),this._track.input._disposed)throw new el;const r=[];let{promise:n,resolve:s}=ke(),{promise:a,resolve:o}=ke(),l=!1,c=!1,u=null,d=!1;const h=[],f=()=>Math.max(2,h.length);(()=>z(this,null,function*(){let u=null!=e?e:yield this.getFirstPacket(i);for(;u&&!c&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=(null==t?void 0:t.sequenceNumber));)r.length>f()?(({promise:a,resolve:o}=ke()),yield a):(r.push(u),s(),({promise:n,resolve:s}=ke()),u=yield this.getNextPacket(u,i));l=!0,s()}))().catch(e=>{d||(u=e,d=!0,s())});const m=this._track;return{next(){return z(this,null,function*(){for(;;){if(m.input._disposed)throw new el;if(c)return{value:void 0,done:!0};if(d)throw u;if(r.length>0){const e=r.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};yield n}})},return(){return z(this,null,function*(){return c=!0,o(),s(),{value:void 0,done:!0}})},throw(e){return z(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}class Po{constructor(e,t){this.onSample=e,this.onError=t}}class Io{mediaSamplesInRange(e=-1/0,t=1/0,i){vo(e),vo(t);const r=[];let n=!1,s=null,{promise:a,resolve:o}=ke(),{promise:l,resolve:c}=ke(),u=!1,d=!1,h=!1,f=null,m=null,p=!1;const g=R(_({},i),{verifyKeyPackets:!0,metadataOnly:!1});(()=>z(this,null,function*(){var i;f=yield this._createDecoder(i=>{c(),i.timestamp>=t&&(d=!0),d?i.close():(s&&(i.timestamp>e?(r.push(s),n=!0):s.close()),i.timestamp>=e&&(r.push(i),n=!0),s=n?null:i,r.length>0&&(o(),({promise:a,resolve:o}=ke())))},e=>{p||(m=e,p=!0,o())});const k=this._createPacketSink(),y=null!=(i=yield k.getKeyPacket(e,g))?i:yield k.getFirstKeyPacket(g);let b=y;const T=k.packets(null!=y?y:void 0,void 0,g);for(yield T.next();b&&!d&&!this._track.input._disposed;){const e=xo(r.length);if(r.length+f.getDecodeQueueSize()>e){({promise:l,resolve:c}=ke()),yield l;continue}f.decode(b);const t=yield T.next();if(t.done)break;b=t.value}yield T.return(),h||this._track.input._disposed||(yield f.flush()),!n&&s&&r.push(s),u=!0,o()}))().catch(e=>{p||(m=e,p=!0,o())}).finally(()=>{null==f||f.close()});const k=this._track,y=()=>{null==s||s.close();for(const e of r)e.close()};return{next(){return z(this,null,function*(){for(;;){if(k.input._disposed)throw h=!0,d=!0,y(),new el;if(h)return{value:void 0,done:!0};if(p)throw h=!0,d=!0,y(),m;if(r.length>0){const e=r.shift();return c(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};yield a}})},return(){return z(this,null,function*(){return h=!0,d=!0,c(),o(),y(),{value:void 0,done:!0}})},throw(e){return z(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e,t){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const i=function(e){return U(this,null,function*(){Symbol.iterator in e?yield*q(e[Symbol.iterator]()):yield*q(e[Symbol.asyncIterator]())})}(e),r=[],n=[];let{promise:s,resolve:a}=ke(),{promise:o,resolve:l}=ke(),c=!1,u=!1,d=null,h=null,f=!1;const m=e=>{n.push(e),a(),({promise:s,resolve:a}=ke())},p=R(_({},t),{verifyKeyPackets:!0,metadataOnly:!1});(()=>z(this,null,function*(){d=yield this._createDecoder(e=>{if(l(),u)return void e.close();let t=0;for(;r.length>0&&e.timestamp-r[0]>-1e-10;)t++,r.shift();if(t>0)for(let i=0;i{f||(h=e,f=!0,a())});const e=this._createPacketSink();let t=null,s=null,g=-1;const k=()=>z(this,null,function*(){j(s),j(d);let t=s;for(d.decode(t);t.sequenceNumberi&&!u;)({promise:o,resolve:l}=ke()),yield o;if(u)break;const r=yield e.getNextPacket(t,p);j(r),d.decode(r),t=r}g=-1}),y=()=>z(this,null,function*(){j(d),yield d.flush();for(let e=0;e{f||(h=e,f=!0,a())}).finally(()=>{null==d||d.close()});const g=this._track,k=()=>{for(const e of n)null==e||e.close()};return{next(){return z(this,null,function*(){for(;;){if(g.input._disposed)throw u=!0,k(),new el;if(u)return{value:void 0,done:!0};if(f)throw u=!0,k(),h;if(n.length>0){const e=n.shift();return j(void 0!==e),l(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};yield s}})},return(){return z(this,null,function*(){return u=!0,l(),a(),k(),{value:void 0,done:!0}})},throw(e){return z(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}const xo=e=>0===e?40:8;class Co extends Po{constructor(e,t,i,r,n,s){var a,o,l,c,u,d,h,f;super(e,t),this.codec=i,this.decoderConfig=r,this.rotation=n,this.timeResolution=s,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ze,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1,this.finalSamples=[],this.mergeAlphaPromises=[];const m=yo.find(e=>e.supports(i,r));if(m)this.customDecoder=new m,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof Ka))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();j(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if(Ve()){if("avc"===i&&this.decoderConfig.description){const e=Dt(Y(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=Nt(e.sequenceParameterSets[0]);t&&(0===t.frameMbsOnlyFlag&&(this.decoderConfig=R(_({},this.decoderConfig),{hardwareAcceleration:"prefer-software"})),0!==t.maxDecFrameBuffering&&1!==t.bitstreamRestrictionFlag&&(e.sequenceParameterSets[0]=zt(t),this.decoderConfig=R(_({},this.decoderConfig),{description:At(e)})))}}oe(this.decoderConfig.colorSpace)||(this.decoderConfig=R(_({},this.decoderConfig),{colorSpace:{primaries:null!=(o=null==(a=this.decoderConfig.colorSpace)?void 0:a.primaries)?o:"bt709",matrix:null!=(c=null==(l=this.decoderConfig.colorSpace)?void 0:l.matrix)?c:"bt709",transfer:null!=(d=null==(u=this.decoderConfig.colorSpace)?void 0:u.transfer)?d:"bt709",fullRange:null!=(f=null==(h=this.decoderConfig.colorSpace)?void 0:h.fullRange)&&f}}))}const t=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){var e,t;return this.customDecoder?this.customDecoderQueueSize:(j(this.decoder),Math.max(this.decoder.decodeQueueSize,null!=(t=null==(e=this.alphaDecoder)?void 0:e.decodeQueueSize)?t:0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--);else{if(j(this.decoder),Ue()||ge(this.inputTimestamps,e.timestamp,e=>e),Ve()&&0===this.currentPacketIndex)if("avc"===this.codec){const t=[];let i=!1;for(const n of xt(e.data,this.decoderConfig)){const r=Ct(e.data[n.offset]);if(i||(i=r>=1&&r<=5),r===Tt.AUD){if(i)break;t.length=0}r>=20&&r<=31||t.push(e.data.subarray(n.offset,n.offset+n.length))}if(!this.decoderConfig.description)for(let e=0;e{if(t.description){const i=3&Y(t.description)[4];return Rt(e,i+1)}return _t(e)})(t,this.decoderConfig);e=new nr(r,e.type,e.timestamp,e.duration)}else if("hevc"===this.codec){const t=Jt(e.data,this.decoderConfig);t&&(e=new nr(t,e.type,e.timestamp,e.duration))}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha)return void this.pushNullAlphaFrame();if(this.merger||(this.merger=new Eo),!this.alphaDecoder){const e=e=>{if(this.colorQueue.length>0){const t=this.colorQueue.shift();j(void 0!==t),this.mergeAlpha(t,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();j(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=ai(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(null!=t?t:e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(const t of Lt(e,this.decoderConfig)){const i=Ut(e[t.offset]);if(i===St.RASL_N||i===St.RASL_R)return!0}return!1}sampleHandler(e){if(Ue()){if(this.sampleQueue.length>0&&e.timestamp>=X(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}ge(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();j(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}mergeAlpha(e,t){return z(this,null,function*(){const i=ke();this.mergeAlphaPromises.push(i.promise);const r={sample:null};this.finalSamples.push(r);try{if(t){j(this.merger);const i=yield this.merger.merge(e,t);r.sample=new Ka(i)}else r.sample=new Ka(e);for(;this.finalSamples.length>0&&null!==this.finalSamples[0].sample;){const e=this.finalSamples.shift();this.sampleHandler(e.sample)}}catch(n){ye(this.finalSamples,r),this.onError(n)}finally{ye(this.mergeAlphaPromises,i.promise),i.resolve()}})}flush(){return z(this,null,function*(){var e;if(this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(j(this.decoder),yield Promise.all([this.decoder.flush(),null==(e=this.alphaDecoder)?void 0:e.flush()]),yield Promise.all(this.mergeAlphaPromises),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),Ue()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1})}close(){var e;this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(j(this.decoder),"closed"!==this.decoder.state&&this.decoder.close(),this.alphaDecoder&&"closed"!==this.alphaDecoder.state&&this.alphaDecoder.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,null==(e=this.merger)||e.close());for(const t of this.sampleQueue)t.close();this.sampleQueue.length=0}}let Bo=null;class Eo{constructor(){this.workers=[],this.nextWorkerIndex=0,this.pendingRequests=new Map,this.nextRequestId=0}merge(e,t){if(0===this.workers.length){if(!Bo){const e=new Blob([`(${_o.toString()})()`],{type:"application/javascript"});Bo=URL.createObjectURL(e)}const e=Ie(navigator.hardwareConcurrency,1,4);for(let t=0;t{const t=e.data,i=this.pendingRequests.get(t.id);i&&(this.pendingRequests.delete(t.id),"error"in t?i.reject(new Error(t.error)):i.resolve(t.frame))}),e.addEventListener("error",e=>{const t=new Error(e.message||"Color/alpha merge worker error.");for(const i of this.pendingRequests.values())i.reject(t);this.pendingRequests.clear()}),this.workers.push(e)}}const i=this.nextRequestId++,r=ke();this.pendingRequests.set(i,r);const n=this.workers[this.nextWorkerIndex];return this.nextWorkerIndex=(this.nextWorkerIndex+1)%this.workers.length,n.postMessage({id:i,color:e,alpha:t},{transfer:[e,t]}),r.promise}close(){for(const t of this.workers)t.terminate();this.workers.length=0;const e=new Error("Color/alpha merger closed.");for(const t of this.pendingRequests.values())t.reject(e);this.pendingRequests.clear()}}const _o=()=>{let e=null,t=null,i=Promise.resolve();self.addEventListener("message",e=>{const{id:t,color:n,alpha:s}=e.data;i=i.then(()=>z(null,null,function*(){try{const e=yield r(n,s);self.postMessage({id:t,frame:e},{transfer:[e]})}catch(e){self.postMessage({id:t,error:e.message})}finally{n.close(),s.close()}}))});const r=(e,t)=>z(null,null,function*(){const i=e.format,r=t.format;if(!i||!r)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");const o=i.includes("P10"),l=i.includes("P12"),c=r.includes("P10"),u=r.includes("P12");if(c!==o||u!==l)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${i}', alpha: '${r}').`);if("RGBX"===i||"RGBA"===i||"BGRX"===i||"BGRA"===i)return yield n(e,t,i);if("I420"===i||"I420P10"===i||"I420P12"===i||"I422"===i||"I422P10"===i||"I422P12"===i||"I444"===i||"I444P10"===i||"I444P12"===i)return yield s(e,t,i);if("NV12"===i)return yield a(e,t);throw new Error(`CPU color/alpha merging does not support format '${i}'.`)}),n=(e,t,i)=>z(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=c*u,h=new Uint8Array(4*d);yield e.copyTo(h);const f=yield o(t,c,u,1);for(let e=0,t=3;ez(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=i.includes("P10"),h=i.includes("P12"),f=d||h?2:1;let m,p;i.startsWith("I420")?(m=Math.ceil(c/2),p=Math.ceil(u/2)):i.startsWith("I422")?(m=Math.ceil(c/2),p=u):(m=c,p=u);const g=c*u,k=g*f,y=m*p*f,b=new Uint8Array(k+2*y+g*f);yield e.copyTo(b);const T=yield o(t,c,u,f),v=k+2*y;b.set(T,v);const S={format:i.slice(0,4)+"A"+i.slice(4),codedWidth:c,codedHeight:u,timestamp:e.timestamp,duration:null!=(l=e.duration)?l:void 0,transfer:[b.buffer]};return new VideoFrame(b,S)}),a=(e,i)=>z(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=c*u,h=Math.ceil(c/2)*Math.ceil(u/2),f=e.allocationSize();t&&t.byteLength===f||(t=new Uint8Array(f)),yield e.copyTo(t);const m=new Uint8Array(d+2*h+d);m.set(t.subarray(0,d),0);const p=d,g=d+h,k=d;for(let e=0;ez(null,null,function*(){const s=t.allocationSize();e&&e.byteLength===s||(e=new Uint8Array(s)),yield t.copyTo(e);const a=t.format;if("RGBA"===a||"BGRA"===a||"RGBX"===a||"BGRX"===a){const t="RGBA"===a||"RGBX"===a?0:2,n=i*r;for(let i=0;i{if(!e||"object"!==typeof e)throw new TypeError("decoderOptions must be an object.");if(void 0!==e.hardwareAcceleration&&!["no-preference","prefer-hardware","prefer-software"].includes(e.hardwareAcceleration))throw new TypeError("decoderOptions.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(void 0!==e.optimizeForLatency&&"boolean"!==typeof e.optimizeForLatency)throw new TypeError("decoderOptions.optimizeForLatency, when provided, must be a boolean.")};class Fo extends Io{constructor(e,t={}){if(!(e instanceof qo))throw new TypeError("videoTrack must be an InputVideoTrack.");Ro(t),super(),this._track=e,this._decoderOptions=t}_createDecoder(e,t){return z(this,null,function*(){if(!(yield this._track.canDecode())){if("undefined"===typeof VideoDecoder)throw new Error(je("VideoDecoder"));throw new Error("This video track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=yield this._track.getCodec(),r=yield this._track.getRotation();let n=yield this._track.getDecoderConfig();const s=yield this._track.getTimeResolution();return j(i&&n),n=R(_({},n),{hardwareAcceleration:this._decoderOptions.hardwareAcceleration,optimizeForLatency:this._decoderOptions.optimizeForLatency}),new Co(e,t,i,n,r,s)})}_createPacketSink(){return new wo(this._track)}getSample(e){return z(this,arguments,function*(e,t={}){vo(e);try{for(var i,r,n,s=W(this.mediaSamplesAtTimestamps([e],t));i=!(r=yield s.next()).done;i=!1){return r.value}}catch(r){n=[r]}finally{try{i&&(r=s.return)&&(yield r.call(s))}finally{if(n)throw n[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class Ao{constructor(e,t={}){var i,r,n;if(this._rotation=0,this._initPromise=null,this._nextCanvasIndex=0,!(e instanceof qo))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&eo(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");void 0!==t.decoderOptions&&Ro(t.decoderOptions),this._videoTrack=e,this._alpha=null!=(i=t.alpha)&&i,this._options=t,this._fit=null!=(r=t.fit)?r:"fill",this._videoSampleSink=new Fo(e,t.decoderOptions),this._canvasPool=Array.from({length:null!=(n=t.poolSize)?n:0},()=>null)}_ensureInit(){var e;return null!=(e=this._initPromise)?e:this._initPromise=(()=>z(this,null,function*(){var e;const t=this._options,i=this._videoTrack,r=null!=(e=t.rotation)?e:yield i.getRotation(),n=yield i.getSquarePixelWidth(),s=yield i.getSquarePixelHeight(),[a,o]=r%180===0?[n,s]:[s,n];let l=t.crop;l&&(l=Za(l,a,o));let[c,u]=l?[l.width,l.height]:[a,o];const d=c/u;void 0!==t.width&&void 0===t.height?(c=t.width,u=Math.round(c/d)):void 0===t.width&&void 0!==t.height?(u=t.height,c=Math.round(u*d)):void 0!==t.width&&void 0!==t.height&&(c=t.width,u=t.height),this._width=c,this._height=u,this._rotation=r,this._crop=l}))()}_videoSampleToWrappedCanvas(e){const t=this._width,i=this._height;let r=this._canvasPool[this._nextCanvasIndex],n=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=t,r.height=i):r=new OffscreenCanvas(t,i),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),n=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const s=r.getContext("2d",{alpha:this._alpha||We()});j(s),e._drawWithFitAndMipmapping(r,s,{fit:this._fit,rotation:this._rotation,crop:this._crop,targetIsFresh:n,fillBlack:!this._alpha&&We()});const a={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),a}getCanvas(e,t){return z(this,null,function*(){vo(e),yield this._ensureInit();const i=yield this._videoSampleSink.getSample(e,t);return i&&this._videoSampleToWrappedCanvas(i)})}canvases(e,t,i){return U(this,null,function*(){yield new L(this._ensureInit()),yield*q(Pe(this._videoSampleSink.samples(e,t,i),e=>this._videoSampleToWrappedCanvas(e)))})}canvasesAtTimestamps(e,t){return U(this,null,function*(){yield new L(this._ensureInit()),yield*q(Pe(this._videoSampleSink.samplesAtTimestamps(e,t),e=>e&&this._videoSampleToWrappedCanvas(e)))})}}class Do extends Po{constructor(e,t,i,r){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ze,this.customDecoderQueueSize=0,this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0;const n=t=>{let i=t.timestamp;null!==this.expectedFirstTimestamp&&null===this.currentTimestamp&&(this.timestampOffset=this.expectedFirstTimestamp-i),i+=this.timestampOffset,(null===this.currentTimestamp||Math.abs(i-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=i);const n=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const s=r.sampleRate;t.setTimestamp(Math.round(n*s)/s),e(t)},s=bo.find(e=>e.supports(i,r));if(s)this.customDecoder=new s,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof uo))throw new TypeError("The argument passed to onSample must be an AudioSample.");n(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{n(new uo(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(r)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(j(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--)):(j(this.decoder),null!=this.expectedFirstTimestamp||(this.expectedFirstTimestamp=e.timestamp),this.decoder.decode(e.toEncodedAudioChunk()))}flush(){return z(this,null,function*(){this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(j(this.decoder),yield this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0})}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(j(this.decoder),"closed"!==this.decoder.state&&this.decoder.close())}}class Mo extends Po{constructor(e,t,i){super(e,t),this.decoderConfig=i,this.currentTimestamp=null,j(Ri.includes(i.codec)),this.codec=i.codec;const{dataType:r,sampleSize:n,littleEndian:s}=Vi(this.codec);switch(this.inputSampleSize=n,n){case 1:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint8(t)-B(2,7):"signed"===r?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===r?this.readInputValue=(e,t)=>(e=>{let t=0,i=0,r=~e;128&r&&(r&=-129,t=-1),i=5+((240&r)>>4);const n=(1<(e=>{let t=0,i=0,r=85^e;128&r&&(r&=-129,t=-1),i=4+((240&r)>>4);let n=0;return n=4!==i?1<e.getUint16(t,s)-B(2,15):"signed"===r?this.readInputValue=(e,t)=>e.getInt16(t,s):j(!1);break;case 3:"unsigned"===r?this.readInputValue=(e,t)=>Se(e,t,s)-B(2,23):"signed"===r?this.readInputValue=(e,t)=>((e,t,i)=>Se(e,t,i)<<8>>8)(e,t,s):j(!1);break;case 4:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint32(t,s)-B(2,31):"signed"===r?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===r?this.readInputValue=(e,t)=>e.getFloat32(t,s):j(!1);break;case 8:"float"===r?this.readInputValue=(e,t)=>e.getFloat64(t,s):j(!1);break;default:ve(n),j(!1)}switch(n){case 1:"ulaw"===r||"alaw"===r?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,i)=>e.setUint8(t,i+B(2,7)));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i<<8,!0);break;case 4:this.outputSampleSize=4,"float"===r?(this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0);break;default:ve(n),j(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=J(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,r=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,n=new ArrayBuffer(r),s=new DataView(n);for(let c=0;c=a)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=a;const l=new uo({format:this.outputFormat,data:n,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:o});this.onSample(l)}flush(){return z(this,null,function*(){})}close(){}}class No extends Io{constructor(e){if(!(e instanceof Wo))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}_createDecoder(e,t){return z(this,null,function*(){if(!(yield this._track.canDecode())){if("undefined"===typeof AudioDecoder)throw new Error(je("AudioDecoder"));throw new Error("This audio track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=yield this._track.getCodec(),r=yield this._track.getDecoderConfig();return j(i&&r),Ri.includes(r.codec)?new Mo(e,t,r):new Do(e,t,i,r)})}_createPacketSink(){return new wo(this._track)}getSample(e){return z(this,arguments,function*(e,t={}){vo(e);try{for(var i,r,n,s=W(this.mediaSamplesAtTimestamps([e],t));i=!(r=yield s.next()).done;i=!1){return r.value}}catch(r){n=[r]}finally{try{i&&(r=s.return)&&(yield r.call(s))}finally{if(n)throw n[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class Oo{constructor(e){if(!(e instanceof Wo))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new No(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}getBuffer(e,t){return z(this,null,function*(){vo(e);const i=yield this._audioSampleSink.getSample(e,t);return i&&this._audioSampleToWrappedArrayBuffer(i)})}buffers(e,t,i){return Pe(this._audioSampleSink.samples(e,t,i),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e,t){return Pe(this._audioSampleSink.samplesAtTimestamps(e,t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class zo{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof qo}isAudioTrack(){return this instanceof Wo}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}getInternalCodecId(){return z(this,null,function*(){return this._backing.getInternalCodecId()})}get internalCodecId(){return Lo(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}getLanguageCode(){return z(this,null,function*(){return this._backing.getLanguageCode()})}get languageCode(){return Lo(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}getName(){return z(this,null,function*(){return this._backing.getName()})}get name(){return Lo(this._backing.getName(),"name","getName")}getTimeResolution(){return z(this,null,function*(){return this._backing.getTimeResolution()})}get timeResolution(){return Lo(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}isRelativeToUnixEpoch(){return z(this,null,function*(){return this._backing.isRelativeToUnixEpoch()})}getUnixTimeForTimestamp(e){return z(this,null,function*(){return this._backing.getUnixTimeForTimestamp(e)})}hasUnixTimeMapping(){return z(this,null,function*(){return null!==(yield this._backing.getUnixTimeForTimestamp(yield this.getFirstTimestamp()))})}getDisposition(){return z(this,null,function*(){return this._backing.getDisposition()})}get disposition(){return Lo(this._backing.getDisposition(),"disposition","getDisposition")}getBitrate(){return z(this,null,function*(){return this._backing.getBitrate()})}getAverageBitrate(){return z(this,null,function*(){return this._backing.getAverageBitrate()})}getFirstTimestamp(){return z(this,null,function*(){var e;const t=yield this._backing.getFirstPacket({metadataOnly:!0});return null!=(e=null==t?void 0:t.timestamp)?e:0})}computeDuration(e){return z(this,null,function*(){var t,i;const r=yield this._backing.getPacket(1/0,_({metadataOnly:!0},e)),n=(null!=(t=null==r?void 0:r.timestamp)?t:0)+(null!=(i=null==r?void 0:r.duration)?i:0);return Ee(n,yield this.getTimeResolution())})}getDurationFromMetadata(){return z(this,arguments,function*(e={}){return this._backing.getDurationFromMetadata(e)})}computePacketStats(e=1/0,t){return z(this,null,function*(){const i=new wo(this);let r=1/0,n=-1/0,s=0,a=0;try{for(var o,l,c,u=W(i.packets(void 0,void 0,_({metadataOnly:!0},t)));o=!(l=yield u.next()).done;o=!1){const t=l.value;if(s>=e&&t.timestamp>=n)break;r=Math.min(r,t.timestamp),n=Math.max(n,t.timestamp+t.duration),s++,a+=t.byteLength}}catch(l){c=[l]}finally{try{o&&(l=u.return)&&(yield l.call(u))}finally{if(c)throw c[0]}}return{packetCount:s,averagePacketRate:s?Number((s/(n-r)).toPrecision(16)):0,averageBitrate:s?Number((8*a/(n-r)).toPrecision(16)):0}})}isLive(){return z(this,null,function*(){return null!==(yield this._backing.getLiveRefreshInterval())})}getLiveRefreshInterval(){return z(this,null,function*(){return this._backing.getLiveRefreshInterval()})}canBePairedWith(e){if(!(e instanceof zo))throw new TypeError("other must be an InputTrack.");return this.input===e.input&&this!==e&&(this._backing.getPairingMask()&e._backing.getPairingMask())!==BigInt("0")}getPairableTracks(e){return z(this,null,function*(){return this.input.getTracks(Ko({filter:e=>e.canBePairedWith(this)},e))})}getPairableVideoTracks(e){return z(this,null,function*(){return this.input.getVideoTracks(Ko({filter:e=>e.canBePairedWith(this)},e))})}getPairableAudioTracks(e){return z(this,null,function*(){return this.input.getAudioTracks(Ko({filter:e=>e.canBePairedWith(this)},e))})}getPrimaryPairableVideoTrack(e){return z(this,null,function*(){return this.input.getPrimaryVideoTrack(Ko({filter:e=>e.canBePairedWith(this)},e))})}getPrimaryPairableAudioTrack(e){return z(this,null,function*(){return this.input.getPrimaryAudioTrack(Ko({filter:e=>e.canBePairedWith(this)},e))})}hasPairableTrack(e){return z(this,null,function*(){e&&(e=Uo(e));const t=yield this.input.getTracks();for(const i of t)if(this.canBePairedWith(i)&&(!e||(yield e(i))))return!0;return!1})}hasPairableVideoTrack(e){return e&&(e=Uo(e)),this.hasPairableTrack(t=>z(this,null,function*(){return t.isVideoTrack()&&(!e||(yield e(t)))}))}hasPairableAudioTrack(e){return e&&(e=Uo(e)),this.hasPairableTrack(t=>z(this,null,function*(){return t.isAudioTrack()&&(!e||(yield e(t)))}))}}const Lo=(e,t,i)=>{if(Xe(e))throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${i}()' instead.`);return e},Uo=e=>{if(void 0!==e&&"function"!==typeof e)throw new TypeError("predicate, when provided, must be a function.");return e?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("predicate must return or resolve to a boolean value.");return e},r=e(t);return Xe(r)?r.then(i):i(r)}:void 0};class qo extends zo{constructor(e,t){super(e,t),this._pixelAspectRatioCache=null,this._backing=t}get type(){return"video"}getCodec(){return z(this,null,function*(){return this._backing.getCodec()})}get codec(){return Lo(this._backing.getCodec(),"codec","getCodec")}hasOnlyKeyPackets(){return z(this,null,function*(){var e,t,i;return null!=(i=yield null==(t=(e=this._backing).getHasOnlyKeyPackets)?void 0:t.call(e))?i:"prores"===(yield this._backing.getCodec())})}getCodedWidth(){return z(this,null,function*(){return this._backing.getCodedWidth()})}get codedWidth(){return Lo(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}getCodedHeight(){return z(this,null,function*(){return this._backing.getCodedHeight()})}get codedHeight(){return Lo(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}getRotation(){return z(this,null,function*(){return this._backing.getRotation()})}get rotation(){return Lo(this._backing.getRotation(),"rotation","getRotation")}getSquarePixelWidth(){return z(this,null,function*(){return this._backing.getSquarePixelWidth()})}get squarePixelWidth(){return Lo(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}getSquarePixelHeight(){return z(this,null,function*(){return this._backing.getSquarePixelHeight()})}get squarePixelHeight(){return Lo(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}getPixelAspectRatio(){return z(this,null,function*(){var e;return null!=(e=this._pixelAspectRatioCache)?e:this._pixelAspectRatioCache=it({num:(yield this.getSquarePixelWidth())*(yield this.getCodedHeight()),den:(yield this.getSquarePixelHeight())*(yield this.getCodedWidth())})})}get pixelAspectRatio(){var e;return null!=(e=this._pixelAspectRatioCache)?e:this._pixelAspectRatioCache=it({num:Lo(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*Lo(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:Lo(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*Lo(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")})}getDisplayWidth(){return z(this,null,function*(){var e,t;const i=yield null==(t=(e=this._backing).getMetadataDisplayWidth)?void 0:t.call(e);if(null!=i)return i;return(yield this.getRotation())%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight()})}get displayWidth(){var e,t;const i=null==(t=(e=this._backing).getMetadataDisplayWidth)?void 0:t.call(e);if(void 0!==i){const e=Lo(i,"displayWidth","getDisplayWidth");if(null!==e)return e}const r=Lo(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return Lo(r,"displayWidth","getDisplayWidth")}getDisplayHeight(){return z(this,null,function*(){var e,t;const i=yield null==(t=(e=this._backing).getMetadataDisplayHeight)?void 0:t.call(e);if(null!=i)return i;return(yield this.getRotation())%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth()})}get displayHeight(){var e,t;const i=null==(t=(e=this._backing).getMetadataDisplayHeight)?void 0:t.call(e);if(void 0!==i){const e=Lo(i,"displayHeight","getDisplayHeight");if(null!==e)return e}const r=Lo(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return Lo(r,"displayHeight","getDisplayHeight")}getColorSpace(){return z(this,null,function*(){return this._backing.getColorSpace()})}hasHighDynamicRange(){return z(this,null,function*(){const e=yield this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pq"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix})}canBeTransparent(){return z(this,null,function*(){return this._backing.canBeTransparent()})}getDecoderConfig(){return z(this,null,function*(){return this._backing.getDecoderConfig()})}getCodecParameterString(){return z(this,null,function*(){var e,t,i;const r=yield null==(t=(e=this._backing).getMetadataCodecParameterString)?void 0:t.call(e);if(null!=r)return r;const n=yield this._backing.getDecoderConfig();return null!=(i=null==n?void 0:n.codec)?i:null})}canDecode(){return z(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=yield this._backing.getCodec();if(j(null!==t),yo.some(i=>i.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(yield VideoDecoder.isConfigSupported(e)).supported}catch(e){return lt._error("Error during decodability check:",e),!1}})}determinePacketType(e){return z(this,null,function*(){if(!(e instanceof nr))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");const t=yield this.getCodec();if(null===t)return null;const i=yield this.getDecoderConfig();return j(i),ai(t,i,e.data)})}computeFrameRateMetrics(){return z(this,arguments,function*(e={}){var t,i;if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.targetPacketCount&&(!Je(e.targetPacketCount)||e.targetPacketCount<0))throw new TypeError("options.targetPacketCount must be a non-negative number.");const r=yield this.getTimeResolution(),n=null!=(t=e.targetPacketCount)?t:256,s=new wo(this),a=[];let o=-1/0,l=0;try{for(var c,u,d,h=W(s.packets(void 0,void 0,{metadataOnly:!0}));c=!(u=yield h.next()).done;c=!1){const e=u.value;if(a.length>=n&&e.timestamp>=o)break;a.push(e.timestamp),o=Math.max(o,e.timestamp),l++}}catch(u){d=[u]}finally{try{c&&(u=h.return)&&(yield u.call(h))}finally{if(d)throw d[0]}}const f=new Float64Array(a.length);for(let R=0;Re-t),I=w-1>>1,x=w>>1;let C=0,B=0,E=0;for(const R of P)if(E+=b.get(R),0===C&&E>I&&(C=R),E>x){B=R;break}const _=(k/C+k/B)/2;return{underlyingFrameRate:g,bestGuessFrameRate:null!==g?g:Qo(_),minFrameRate:k/v,maxFrameRate:k/T,averageFrameRate:k*w/S,medianFrameRate:_,frameRateIsConstant:null!==g&&1===T&&1===v,probedPacketCount:l}})}}class Wo extends zo{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}getCodec(){return z(this,null,function*(){return this._backing.getCodec()})}get codec(){return Lo(this._backing.getCodec(),"codec","getCodec")}hasOnlyKeyPackets(){return z(this,null,function*(){var e,t,i;return null==(i=yield null==(t=(e=this._backing).getHasOnlyKeyPackets)?void 0:t.call(e))||i})}getNumberOfChannels(){return z(this,null,function*(){return this._backing.getNumberOfChannels()})}get numberOfChannels(){return Lo(this._backing.getNumberOfChannels(),"numberOfChannels","getNumberOfChannels")}getSampleRate(){return z(this,null,function*(){return this._backing.getSampleRate()})}get sampleRate(){return Lo(this._backing.getSampleRate(),"sampleRate","getSampleRate")}getDecoderConfig(){return z(this,null,function*(){return this._backing.getDecoderConfig()})}getCodecParameterString(){return z(this,null,function*(){var e,t,i;const r=yield null==(t=(e=this._backing).getMetadataCodecParameterString)?void 0:t.call(e);if(null!=r)return r;const n=yield this._backing.getDecoderConfig();return null!=(i=null==n?void 0:n.codec)?i:null})}canDecode(){return z(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=yield this._backing.getCodec();if(j(null!==t),bo.some(i=>i.supports(t,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof 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t?(i=ul(e,!0),r=ul(e,!0)):(r=ul(e,!1),i=ul(e,!1)),4294967296*r+i},pl=e=>4294967296*dl(e)+dl(e),gl=e=>4294967296*fl(e)+dl(e),kl=e=>{const t=hl(e),i=(e=>{rl(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*i+t},yl=e=>{rl(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},bl=e=>{rl(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},Tl=(e,t)=>{rl(e,t);let i="";for(let r=0;rZ.decode(nl(e,t)).split("\n").map(e=>e.trim()).filter(e=>{var t;return e.length>0&&!(null==(t=null==i?void 0:i.ignore)?void 0:t.call(i,e))});var Sl,wl,Pl,Il;(wl=Sl||(Sl={}))[wl.Unsynchronisation=128]="Unsynchronisation",wl[wl.ExtendedHeader=64]="ExtendedHeader",wl[wl.ExperimentalIndicator=32]="ExperimentalIndicator",wl[wl.Footer=16]="Footer",(Il=Pl||(Pl={}))[Il.ISO_8859_1=0]="ISO_8859_1",Il[Il.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",Il[Il.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",Il[Il.UTF_8=3]="UTF_8";const xl=128,Cl=10,Bl=["Blues","Classic 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t=()=>this.current(e,"playing")&&this.wanted;try{for(;this.seeking;)if(yield this.seeking.complete.promise,!t())return;if(!t())return;if(this.host.paused=!1,yield this.startAudio(),!t())return void(this.wanted&&!this.host.destroyed||this.host.audio.pause());this.host.video.start(this.host.audio),Ul(this.host.events,t,["play","playing"])}catch(i){if(!t())return;this.wanted=!1,this.host.paused=!0;try{this.stopEngines()}catch(r){console.warn("MediaBunny play cleanup error:",r)}throw i}finally{this.playing===e&&(this.playing=null)}})}seek(e,t){return this.position(t=>z(this,null,function*(){const i=this.host.audio.seek(e),r=t()?this.host.video.seek(e):Promise.resolve();yield Promise.all([i,r])}),["seeked"],!1,t)}replace(e,t){return this.position(i=>z(this,null,function*(){e.duration=yield ql(e),i()&&(this.host.media=e,yield Promise.all([this.host.video.load(e),this.host.audio.load(e)]),i()&&(yield 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t=requestAnimationFrame(()=>{if(this.scheduled===t&&this.current(e)){this.scheduled=null;try{this.render()}catch(i){this.stop(),this.report(i)}}});this.scheduled=t,this.host.rafId=t}render(){const e=this.host.asyncId,t=()=>this.current(e);if(!t()||!this.host.audioClock)return;const i=this.host.audioClock.currentTime,r=Date.now();if(r-this.host.lastTimeUpdate>=this.host.timeupdateInterval){if(this.host.events.emit("timeupdate"),!t())return;this.host.lastTimeUpdate=r}if(this.ready()){if(Number.isFinite(this.host.duration)&&i>=this.host.duration){this.stop(),this.host.stalled=!1;const e=this.host.asyncId;return void Ul(this.host.events,()=>!this.closed&&this.host.asyncId===e,["ended","pause","canplay"])}if(this.host.nextFrame&&this.host.nextFrame.timestamp<=i){if(this.draw(this.host.nextFrame),this.host.nextFrame=null,this.request(e),this.host.stalled){if(Ul(this.host.events,t,["canplay","playing"]),!t())return;this.host.stalled=!1}}else this.host.nextFrame||(this.request(e),Number.isFinite(this.host.duration)&&i!A(this,o),e=>N(this,d,g).call(this,e,!0),e=>N(this,d,m).call(this,e)))}preflight(e,t,i){return z(this,null,function*(){return function(e,t,i,r,n=()=>!0){return z(this,null,function*(){if((null==r?void 0:r.aborted)||!n())return!1;if(!t||"string"!==typeof e||Ol(e))return!0;try{const t=yield fetch(e,r?{method:"HEAD",signal:r}:{method:"HEAD"});if((null==r?void 0:r.aborted)||!n())return!1;const s=t.headers.get("accept-ranges");return!(!s||"none"===s)||(i.emit("error",new Event("RangeNotSupported")),!1)}catch(s){return!((null==r?void 0:r.aborted)||!n())&&(console.warn("Preflight check failed:",s),!0)}})}(e,this.preflightRange,this.events,t,i)})}drawPoster(){if(A(this,a)||!this.poster||this.posterDrawn)return;const e=A(this,t);A(this,l).draw(this.poster,()=>N(this,d,h).call(this,e),e=>{this.clear(),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,N(this,d,f).call(this).drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e=>N(this,d,m).call(this,e))}stopIterator(){return z(this,null,function*(){const e=this.videoIterator;this.videoIterator=null,this.nextFrame=null,yield function(e){if(!e)return Promise.resolve();const t=Vl.get(e);if(t)return t;const i=Promise.resolve().then(()=>e.return()).then(()=>{});return Vl.set(e,i),i}(e)})}clear(){N(this,d,f).call(this).clearRect(0,0,this.canvas.width,this.canvas.height)}cancelPending(){O(this,t)._++,O(this,i)._++,this.stop(),N(this,d,p).call(this),A(this,l).cancel(),M(this,o,!1),M(this,r,null),M(this,n,null),M(this,s,null),this.videoSink=null,this.input=null}load(e,n){return z(this,null,function*(){if(A(this,a))return;this.cancelPending();const s=A(this,t),l=A(this,i);M(this,o,!0);const c=Promise.resolve().then(()=>N(this,d,k).call(this,e,s,l,n));M(this,r,c);try{yield c}finally{A(this,r)===c&&M(this,r,null)}})}handleNoVideoTrack(){A(this,a)||(this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster())}resetIterator(e){return z(this,null,function*(){if(A(this,a))return;const n=A(this,t),s=++O(this,i)._,c=A(this,r);this.stop(),A(this,l).cancel(),M(this,o,!0);try{c&&(yield c),yield N(this,d,y).call(this,e,n,s)}catch(u){if(N(this,d,h).call(this,n)&&A(this,i)===s)throw N(this,d,p).call(this),u}finally{N(this,d,h).call(this,n)&&A(this,i)===s&&M(this,o,!1)}})}updateNextFrame(e){return z(this,null,function*(){yield A(this,c).update(e)})}render(){A(this,c).render()}start(e){A(this,c).start(e)}stop(){A(this,c).stop()}seek(e){return z(this,null,function*(){yield this.resetIterator(e)})}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){A(this,a)||(M(this,a,!0),O(this,t)._++,A(this,c).destroy(),A(this,l).cancel(),N(this,d,p).call(this),this.posterDrawn=!1,M(this,n,null),M(this,s,null),this.videoSink=null,this.input=null,this.audioClock=null)}}t=new WeakMap,i=new WeakMap,r=new WeakMap,n=new WeakMap,s=new WeakMap,a=new WeakMap,o=new WeakMap,l=new WeakMap,c=new WeakMap,u=new WeakMap,d=new WeakSet,h=function(e){return!A(this,a)&&A(this,t)===e},f=function(){if(!this.ctx)throw new Error("Canvas 2D context is unavailable.");return this.ctx},m=function(e){A(this,a)||(N(this,d,p).call(this),A(this,u)?A(this,u).call(this,e):this.events.emit("error",e))},p=function(){this.stopIterator().catch(e=>console.warn("MediaBunny iterator cleanup error:",e))},g=function(e,t){A(this,l).cancel(),t&&this.clear(),N(this,d,f).call(this).drawImage(e.canvas,0,0)},k=function(e,t,r,s){return z(this,null,function*(){if(N(this,d,h).call(this,t))try{this.clear(),this.posterDrawn=!1;const{input:i,videoTrack:a,duration:o}=e;if(this.input=i,this.duration=o,!a)return this.handleNoVideoTrack(),void(null==s||s());const l=null!==a.codec&&(yield a.canDecode());if(!N(this,d,h).call(this,t))return;if(!l)return this.handleNoVideoTrack(),void(null==s||s());const c=yield a.canBeTransparent();if(!N(this,d,h).call(this,t))return;M(this,n,()=>new Ao(a,{poolSize:2,fit:"contain",alpha:c})),this.videoSink=A(this,n).call(this),this.width=a.displayWidth,this.height=a.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,null==s||s(),N(this,d,h).call(this,t)&&(yield N(this,d,y).call(this,0,t,r))}catch(a){if(N(this,d,h).call(this,t))throw N(this,d,p).call(this),a}finally{N(this,d,h).call(this,t)&&A(this,i)===r&&M(this,o,!1)}})},y=function(e,t,r){return z(this,null,function*(){if(!N(this,d,h).call(this,t)||A(this,i)!==r)return;N(this,d,p).call(this),A(this,n)&&this.videoSink===A(this,s)&&(this.videoSink=A(this,n).call(this));const a=this.videoSink;if(!a||!N(this,d,h).call(this,t))return;M(this,s,a);const o=a.canvases(e);this.videoIterator=o;const l=()=>N(this,d,h).call(this,t)&&A(this,i)===r&&this.videoIterator===o,c=yield Kl(o);if(!l())return;const u=yield Kl(o);l()&&(this.nextFrame=u,c?N(this,d,g).call(this,c,!1):this.drawPoster())})};class Yl{constructor({canvas:e,ctx:t,events:i,option:r={}}){var n,s,a,o,l;D(this,b),this.events=i,this.option=r,this.audio=new Dl(i),this.video=new Ql({canvas:e,ctx:t,events:i,timeupdateInterval:null!=(n=r.timeupdateInterval)?n:250,avSyncTolerance:null!=(s=r.avSyncTolerance)?s:.12,dropLateFrames:null!=(a=r.dropLateFrames)&&a,poster:null!=(o=r.poster)?o:"",preflightRange:null!=(l=r.preflightRange)&&l,onError:e=>{try{this.pause()}catch(t){console.warn("MediaBunny video failure cleanup:",t)}this.reportError(e)}}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,this.input=null,this.media=null,this.loadSession=null,this.destroyed=!1,M(this,b,new Hl(this)),i.addEventListener("ended",()=>{this.destroyed||(this.ended=!0,this.paused=!0,A(this,b).ended())})}load(e){return z(this,null,function*(){var t,i;if(this.destroyed)return;const r=++this.loadSeq;if(A(this,b).invalidate(),this.video.cancelPending(),null==(t=this.loadSession)||t.cancel(),r!==this.loadSeq||this.destroyed)return;if(this.pause(),r!==this.loadSeq||this.destroyed)return;this.disposeInput();const n=new Ll;this.loadSession=n,this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,n.defer(()=>this.events.emit("waiting")),n.defer(()=>this.events.emit("loadstart"));const s=Number.isFinite(this.option.loadTimeout)&&null!=(i=this.option.loadTimeout)?i:0;try{yield n.wait(this.performLoad(e,r,n),s)}catch(a){if(r!==this.loadSeq)return;const e=++this.loadSeq;if(A(this,b).invalidate(),this.video.cancelPending(),n.cancel(),e!==this.loadSeq||this.destroyed)return;this.disposeInput(),this.reportError(a)}})}performLoad(e,t){return z(this,arguments,function*(e,t,i=this.loadSession){const r=()=>!this.destroyed&&t===this.loadSeq;if(!i||!(yield this.video.preflight(e,i.signal,r))||!r())return;const n=zl(e);if(!n)return this.video.handleNoVideoTrack(),void(r()&&this.audio.handleNoAudioTrack());i.own(n);const s=yield function(e,t){return z(this,null,function*(){const i=yield e.getPrimaryVideoTrack(),r=i?yield i.getPrimaryPairableAudioTrack():yield e.getPrimaryAudioTrack(),n=yield ql({input:e,videoTrack:i,audioTrack:r}),s=i||r,a=Ol(t);return{input:e,videoTrack:i,audioTrack:r,duration:n,isLive:!Number.isFinite(n)&&Boolean(s&&(yield s.isLive())),isHls:a,videoMode:a?"auto":"manual",audioMode:a?"auto":"manual"}})}(n,e);if(!r())return;if(!s.videoTrack&&!s.audioTrack)throw this.video.handleNoVideoTrack(),this.video.duration=Number.NaN,this.audio.duration=Number.NaN,new Error("Input has no audio or video tracks.");this.input=n,this.media=s;const a=function(e,t){let i=!1,r=!1,n=!1;function s(s){t()&&!n&&("video"===s?i=!0:r=!0,i&&r&&(n=!0,e()))}return{video:()=>s("video"),audio:()=>s("audio")}}(()=>{this.readyState=1,Ul(this.events,r,["loadedmetadata","durationchange","progress"])},r);try{const e=this.video.load(s,a.video),t=r()?this.audio.load(s,a.audio):Promise.resolve();if(yield Promise.all([e,t]),!r())return;this.readyState=4,this.networkState=1,Ul(this.events,r,["loadeddata","canplay","canplaythrough","progress"])}catch(o){if(!r())return;throw console.error("MediaBunny load error:",o),o}})}createTimeout(e){return new Promise((t,i)=>{setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){var e;null==(e=this.loadSession)||e.disposeInput(),this.input=null,this.media=null}replaceTracks(e){return z(this,null,function*(){if(this.media&&!this.destroyed)return A(this,b).replace(_(_({},this.media),e),this.currentTime)})}selectHlsQuality(e){return z(this,null,function*(){return function(e,t){return z(this,null,function*(){var i;const{input:r,media:n,loadSeq:s}=e;if(!(null==n?void 0:n.isHls)||!r||e.destroyed)return;const a=()=>!e.destroyed&&e.loadSeq===s&&e.input===r&&e.media===n;let o;try{const e=yield r.getVideoTracks();if(!a())return;const s="auto"===t?yield r.getPrimaryVideoTrack():null!=(i=e.find(e=>e.id===t))?i:n.videoTrack;if(!a()||!s)return;let l=n.audioTrack,c=n.audioMode;l&&s.canBePairedWith(l)||(l=yield s.getPrimaryPairableAudioTrack(),c="auto"),o={videoTrack:s,audioTrack:l,videoMode:"auto"===t?"auto":"manual",audioMode:c}}catch(l){if(!a())return;throw l}a()&&(yield e.replaceTracks(o))})}(this,e)})}selectHlsAudio(e){return z(this,null,function*(){return function(e,t){return z(this,null,function*(){var i;const{input:r,media:n,loadSeq:s}=e;if(!(null==n?void 0:n.isHls)||!r||e.destroyed)return;const a=()=>!e.destroyed&&e.loadSeq===s&&e.input===r&&e.media===n;let o;try{const e=yield r.getAudioTracks();if(!a())return;const s="auto"===t?n.videoTrack?yield n.videoTrack.getPrimaryPairableAudioTrack():yield r.getPrimaryAudioTrack():null!=(i=e.find(e=>e.id===t))?i:n.audioTrack;if(!a()||!s)return;let l=n.videoTrack,c=n.videoMode;l&&s.canBePairedWith(l)||(l=yield s.getPrimaryPairableVideoTrack(),c="auto"),o={videoTrack:l,audioTrack:s,videoMode:c,audioMode:"auto"===t?"auto":"manual"}}catch(l){if(!a())return;throw l}a()&&(yield e.replaceTracks(o))})}(this,e)})}getHlsState(){return z(this,null,function*(){const e=this.media;if(this.destroyed)return null;try{const t=yield function(e){return z(this,null,function*(){var t,i,r,n;if(!(null==e?void 0:e.isHls)||!e.input)return null;const[s,a]=yield Promise.all([e.input.getVideoTracks(),e.videoTrack?e.videoTrack.getPairableAudioTracks():[]]),[o,l]=yield Promise.all([Promise.all(s.map((e,t)=>z(null,null,function*(){return{id:e.id,track:e,index:t,name:yield e.getName(),height:yield e.getDisplayHeight(),bitrate:yield Ml(e)}}))),Promise.all(a.map((e,t)=>z(null,null,function*(){const i=yield e.getName(),r=yield e.getLanguageCode();return{id:e.id,track:e,index:t,name:i,lang:r,language:r,bitrate:yield Ml(e)}})))]);return{levels:o,audios:l,currentLevel:e.videoTrack&&null!=(t=o.find(t=>{var i;return t.id===(null==(i=e.videoTrack)?void 0:i.id)}))?t:null,currentAudio:e.audioTrack&&null!=(i=l.find(t=>{var i;return t.id===(null==(i=e.audioTrack)?void 0:i.id)}))?i:null,videoMode:null!=(r=e.videoMode)?r:"auto",audioMode:null!=(n=e.audioMode)?n:"auto"}})}(e);return this.destroyed||this.media!==e?null:t}catch(t){if(this.destroyed||this.media!==e)return null;throw t}})}play(){return z(this,null,function*(){return A(this,b).play()})}pause(){A(this,b).pause()}seek(e){return z(this,null,function*(){return A(this,b).seek(e)})}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}reportError(e){if(this.destroyed)return;const t=e&&"object"===typeof e?Reflect.get(e,"message"):void 0;this.error={code:4,message:"string"===typeof t?t:String(e)},this.networkState=3,this.events.emit("error")}destroy(){if(this.destroyed)return;this.destroyed=!0,this.loadSeq++,A(this,b).invalidate();const e=[];for(const i of[()=>{var e;return null==(e=this.loadSession)?void 0:e.cancel()},()=>this.pause(),()=>this.disposeInput(),()=>this.audio.destroy(),()=>this.video.destroy()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}get currentTime(){return this.audio.currentTime}get duration(){var e,t,i;return null!=(i=null!=(t=null==(e=this.media)?void 0:e.duration)?t:this.audio.duration)?i:this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}b=new WeakMap;const Jl=new WeakMap;function Zl(e){let t=Jl.get(e);return t||(t={closed:!1,frames:new Set},Jl.set(e,t)),t}class ec{constructor({art:e,canvas:t,ctx:i,option:r}){var n,s;this.art=e,this.canvas=t,this.option=r,this.events=new V,this.engine=new Yl({canvas:t,ctx:i,events:this.events,option:r}),this._src=null,this._volume=null!=(n=r.volume)?n:.7,this._muted=!!r.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),r.source?this.src=r.source:(null==(s=e.option)?void 0:s.url)&&(this.src=e.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){Promise.resolve(this.engine.seek(Number(e)||0)).catch(()=>{})}get duration(){return this.engine.duration}get buffered(){return this.createTimeRanges(0,this.engine.duration)}get played(){return this.createTimeRanges(0,this.engine.currentTime)}get seekable(){return this.createTimeRanges(0,this.engine.duration)}createTimeRanges(e,t){return function(e,t,i){return!e||Number.isNaN(e)||i<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>t,end:()=>i}}(this.engine.duration,e,t)}get paused(){return this.engine.paused}get playing(){return!this.engine.paused&&!this.engine.ended}get ended(){return this.engine.ended}get seeking(){return this.engine.seeking}get readyState(){return this.engine.readyState}get networkState(){return this.engine.networkState}get error(){return this.engine.error}get playbackRate(){return this._playbackRate}set playbackRate(e){const t=Number(e);Number.isNaN(t)||t<=0||(this._playbackRate=t,this.engine.setPlaybackRate(t),this.events.emit("ratechange"))}get volume(){return this._volume}set volume(e){var t;this._volume=(t=e,Math.max(0,Math.min(1,Number(t)||0))),this._muted=!1,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}get muted(){return this._muted}set muted(e){this._muted=!!e,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}play(){return this.engine.play()}pause(){this.engine.pause()}load(){this._src&&this.engine.load(this._src)}getM3u8State(){return this.engine.getHlsState()}switchM3u8Quality(e){return this.engine.selectHlsQuality(e)}switchM3u8Audio(e){return this.engine.selectHlsAudio(e)}get videoWidth(){return this.engine.videoWidth}get videoHeight(){return this.engine.videoHeight}get poster(){return this.option.poster||""}set poster(e){this.option.poster=e}get autoplay(){return this.option.autoplay||!1}set autoplay(e){}get loop(){return this.option.loop||!1}set loop(e){}get controls(){return!1}set controls(e){}get playsInline(){return!0}set playsInline(e){}get crossOrigin(){return this.option.crossOrigin||""}set crossOrigin(e){}get preload(){return"auto"}set preload(e){}get defaultMuted(){return!1}set defaultMuted(e){}get defaultPlaybackRate(){return 1}set defaultPlaybackRate(e){}canPlayType(e){return"maybe"}getBoundingClientRect(){return this.canvas.getBoundingClientRect()}requestVideoFrameCallback(e){return function(e,t){const i=Zl(e);if(i.closed)return 0;const r=requestAnimationFrame(n=>{i.frames.delete(r),i.closed||t(n,{presentationTime:e.engine.currentTime,expectedDisplayTime:n+16.6,width:e.engine.videoWidth,height:e.engine.videoHeight,mediaTime:e.engine.currentTime,presentedFrames:0,processingDuration:0,captureTime:n,receiveTime:n,rtpTimestamp:0})});return i.frames.add(r),r}(this,e)}cancelVideoFrameCallback(e){!function(e,t){Zl(e).frames.delete(t),cancelAnimationFrame(t)}(this,e)}setAttribute(e,t){"src"===e?this.src=t:"autoplay"===e?this.autoplay=t:"loop"===e?this.loop=t:"muted"===e?this.muted=!0:Reflect.apply(this.canvas.setAttribute,this.canvas,[e,t])}destroy(){if(function(e){const t=Zl(e);if(t.closed)return!1;t.closed=!0;for(const i of t.frames)cancelAnimationFrame(i);return t.frames.clear(),!0}(this))try{this.engine.destroy()}finally{this.events.destroy()}}}return function(e={}){return t=>{const{constructor:i}=t,{createElement:r}=i.utils,n=r("canvas"),s=n.getContext("2d"),a=new ec({art:t,canvas:n,ctx:s,option:e});t.mediabunny=a;const o={};for(const e in n)"function"===typeof n[e]&&(o[e]=n[e].bind(n));const l=new Set([...Object.getOwnPropertyNames(a),...Object.getOwnPropertyNames(Object.getPrototypeOf(a))]);for(const e of l)"constructor"!==e&&(e in n||Object.defineProperty(n,e,{get(){const t=a[e];return"function"===typeof t?t.bind(a):t},set(t){a[e]=t},configurable:!0,enumerable:!0}));for(const e in o)n[e]=(...t)=>o[e](...t);function c(){var e;(null==(e=t.template)?void 0:e.$player)&&!t.option.autoSize&&Object.assign(n.style,{width:"100%",height:"100%",objectFit:"contain"})}return t.on("resize",c),t.on("video:loadedmetadata",c),function({art:e,shim:t,option:i}){if(i.m3u8)return e.on("video:loadedmetadata",u),e.on("restart",u),{update:u};function r(t){e.controls.cache.has(t)&&e.controls.remove(t)}function n(t){e.setting.find(t)&&e.setting.remove(t)}function s(){r("mediabunny-quality"),n("mediabunny-quality")}function a(){r("mediabunny-audio"),n("mediabunny-audio")}function o(e={}){return e.control||e.setting}function l(r){return z(this,null,function*(){var n;const a=(null==(n=i.m3u8)?void 0:n.quality)||{};if(!o(a)||!(null==r?void 0:r.levels.length))return void s();const l=a.auto||"Auto",c=a.title||"Quality",d=a.getName||(e=>e.name||`${e.height}P`),h=r.currentLevel?d(r.currentLevel):l,f=H(r.levels.map(e=>{var t;return{html:d(e),value:e.id,default:(null==(t=r.currentLevel)?void 0:t.id)===e.id}}),"html").sort((e,t)=>{const i=r.levels.find(t=>t.id===e.value),n=r.levels.find(e=>e.id===t.value);return((null==n?void 0:n.height)||0)-((null==i?void 0:i.height)||0)});f.push({html:l,value:"auto",default:!r.currentLevel});const m=i=>z(null,null,function*(){return yield t.switchM3u8Quality(i.value),e.notice.show=`${c}: ${i.html}`,yield u(),i.html});a.control&&e.controls.update({name:"mediabunny-quality",position:"right",html:h,style:{padding:"0 10px"},selector:f,onSelect:m}),a.setting&&e.setting.update({name:"mediabunny-quality",tooltip:h,html:c,icon:'',width:200,selector:f,onSelect:m})})}function c(r){return z(this,null,function*(){var n;const s=(null==(n=i.m3u8)?void 0:n.audio)||{};if(!o(s)||!(null==r?void 0:r.audios.length)||r.audios.length<2)return void a();const l=s.auto||"Auto",c=s.title||"Audio",d=s.getName||(e=>e.name||e.lang||e.language),h=r.currentAudio?d(r.currentAudio):l,f=H(r.audios.map(e=>{var t;return{html:d(e),value:e.id,default:(null==(t=r.currentAudio)?void 0:t.id)===e.id}}),"html");f.push({html:l,value:"auto",default:!r.currentAudio});const m=i=>z(null,null,function*(){return yield t.switchM3u8Audio(i.value),e.notice.show=`${c}: ${i.html}`,yield u(),i.html});s.control&&e.controls.update({name:"mediabunny-audio",position:"right",html:h,style:{padding:"0 10px"},selector:f,onSelect:m}),s.setting&&e.setting.update({name:"mediabunny-audio",tooltip:h,html:c,icon:'',width:200,selector:f,onSelect:m})})}function u(){return z(this,null,function*(){const e=yield t.getM3u8State();if(!e)return s(),void a();yield Promise.all([l(e),c(e)])})}}({art:t,shim:a,option:e}),t.on("destroy",()=>{delete t.mediabunny,a.destroy()}),n}}}); diff --git a/docs/compiled/artplayer-proxy-mediabunny.mjs b/docs/compiled/artplayer-proxy-mediabunny.mjs index ab7fa87c5..322e9ce8b 100644 --- a/docs/compiled/artplayer-proxy-mediabunny.mjs +++ b/docs/compiled/artplayer-proxy-mediabunny.mjs @@ -11,7 +11,16 @@ var __accessCheck = (obj, member, msg) => member.has(obj) || __typeError("Cannot var __privateGet = (obj, member, getter) => (__accessCheck(obj, member, "read from private field"), getter ? getter.call(obj) : member.get(obj)); var __privateAdd = (obj, member, value) => member.has(obj) ? __typeError("Cannot add the same private member more than once") : member instanceof WeakSet ? member.add(obj) : member.set(obj, value); var __privateSet = (obj, member, value, setter) => (__accessCheck(obj, member, "write to private field"), setter ? setter.call(obj, value) : member.set(obj, value), value); -var _closed, _playback; +var __privateMethod = (obj, member, method) => (__accessCheck(obj, member, "access private method"), method); +var __privateWrapper = (obj, member, setter, getter) => ({ + set _(value) { + __privateSet(obj, member, value, setter); + }, + get _() { + return __privateGet(obj, member, getter); + } +}); +var _closed, _generation, _iteration, _loading, _createSink, _usedSink, _destroyed, _preparing, _poster, _renderer, _onError, _VideoEngine_instances, current_fn, context_fn, report_fn, release_fn, draw_fn, load_fn, reset_fn, _playback; const $audio = ''; const $quality = ''; function uniqBy(array, property) { @@ -24741,17 +24750,240 @@ async function preflightRange(url, enabled, events, signal, isCurrent = () => tr return true; } } +const closing = /* @__PURE__ */ new WeakMap(); +const reading = /* @__PURE__ */ new WeakMap(); +function releaseIterator(iterator) { + if (!iterator) + return Promise.resolve(); + const previous = closing.get(iterator); + if (previous) + return previous; + const pending = Promise.resolve().then(() => iterator.return()).then(() => { + }); + closing.set(iterator, pending); + return pending; +} +function readCanvas(iterator) { + const previous = reading.get(iterator); + if (previous) + return previous; + const pending = Promise.resolve().then(() => iterator.next()).then((result) => result.value ?? null); + reading.set(iterator, pending); + const clear = () => { + if (reading.get(iterator) === pending) + reading.delete(iterator); + }; + pending.then(clear, clear); + return pending; +} +function frameAction(timestamp, time, dropLateFrames, avSyncTolerance, playbackRate) { + const tolerance = dropLateFrames ? Math.max(0.06, avSyncTolerance / Math.max(1, playbackRate)) : 0; + if (dropLateFrames && timestamp < time - tolerance) + return "skip"; + return timestamp <= time + tolerance ? "draw" : "queue"; +} +class Poster { + constructor() { + this.image = null; + } + cancel() { + if (!this.image) + return; + this.image.onload = null; + this.image.onerror = null; + this.image = null; + } + draw(source, current, draw, failure) { + this.cancel(); + const image = new Image(); + this.image = image; + image.onload = () => { + if (this.image !== image || !current()) + return; + this.cancel(); + try { + draw(image); + } catch (error) { + failure(error); + } + }; + image.onerror = () => { + if (this.image === image) + this.cancel(); + }; + image.src = source; + } +} +class Renderer { + constructor(host, ready, draw, failure) { + this.host = host; + this.ready = ready; + this.draw = draw; + this.failure = failure; + this.stopped = false; + this.closed = false; + this.scheduled = null; + this.fetching = null; + } + current(id) { + return !this.closed && !this.stopped && this.host.asyncId === id; + } + async update(id) { + const iterator = this.host.videoIterator; + if (!iterator || !this.ready() || !this.current(id) || this.host.isFetching) + return; + const request = {}; + this.fetching = request; + this.host.isFetching = true; + const current = () => this.current(id) && this.host.videoIterator === iterator; + try { + while (current()) { + const frame = await readCanvas(iterator); + if (!current() || !frame) + return; + const time = this.host.audioClock?.currentTime; + if (time === void 0) + return; + const action = frameAction(frame.timestamp, time, this.host.dropLateFrames, this.host.avSyncTolerance, this.host.playbackRate); + if (action === "skip") + continue; + if (action === "draw") { + this.draw(frame); + } else { + this.host.nextFrame = frame; + return; + } + } + } catch (error) { + if (current()) + throw error; + } finally { + if (this.fetching === request) { + this.fetching = null; + this.host.isFetching = false; + } + } + } + request(id) { + void this.update(id).catch((error) => { + if (!this.current(id)) + return; + this.stop(); + this.report(error); + }); + } + report(error) { + try { + this.failure(error); + } catch (failure) { + console.warn("MediaBunny video error listener:", failure); + } + } + cancelFrame() { + if (this.scheduled === null) + return; + cancelAnimationFrame(this.scheduled); + this.scheduled = null; + } + schedule(id) { + if (!this.current(id)) + return; + this.cancelFrame(); + const frame = requestAnimationFrame(() => { + if (this.scheduled !== frame || !this.current(id)) + return; + this.scheduled = null; + try { + this.render(); + } catch (error) { + this.stop(); + this.report(error); + } + }); + this.scheduled = frame; + this.host.rafId = frame; + } + render() { + const id = this.host.asyncId; + const current = () => this.current(id); + if (!current() || !this.host.audioClock) + return; + const time = this.host.audioClock.currentTime; + const now = Date.now(); + if (now - this.host.lastTimeUpdate >= this.host.timeupdateInterval) { + this.host.events.emit("timeupdate"); + if (!current()) + return; + this.host.lastTimeUpdate = now; + } + if (!this.ready()) { + this.schedule(id); + return; + } + if (Number.isFinite(this.host.duration) && time >= this.host.duration) { + this.stop(); + this.host.stalled = false; + const ended = this.host.asyncId; + publish(this.host.events, () => !this.closed && this.host.asyncId === ended, ["ended", "pause", "canplay"]); + return; + } + if (this.host.nextFrame && this.host.nextFrame.timestamp <= time) { + this.draw(this.host.nextFrame); + this.host.nextFrame = null; + this.request(id); + if (this.host.stalled) { + publish(this.host.events, current, ["canplay", "playing"]); + if (!current()) + return; + this.host.stalled = false; + } + } else if (!this.host.nextFrame) { + this.request(id); + if (Number.isFinite(this.host.duration) && time < this.host.duration && !this.host.stalled) { + this.host.stalled = true; + this.host.events.emit("waiting"); + } + } + this.schedule(id); + } + start(clock) { + if (this.closed) + return; + this.stop(); + this.stopped = false; + this.host.audioClock = clock; + this.host.stalled = false; + if (!this.host.nextFrame) + this.request(this.host.asyncId); + this.schedule(this.host.asyncId); + } + stop() { + this.stopped = true; + this.host.asyncId++; + this.cancelFrame(); + this.fetching = null; + this.host.isFetching = false; + } + destroy() { + if (this.closed) + return; + this.stop(); + this.closed = true; + } +} class VideoEngine { - constructor({ - canvas, - ctx, - events, - timeupdateInterval = 250, - avSyncTolerance = 0.12, - dropLateFrames = false, - poster = "", - preflightRange: preflightRange2 = false - }) { + constructor({ canvas, ctx, events, timeupdateInterval = 250, avSyncTolerance = 0.12, dropLateFrames = false, poster = "", preflightRange: preflightRange2 = false, onError }) { + __privateAdd(this, _VideoEngine_instances); + __privateAdd(this, _generation, 0); + __privateAdd(this, _iteration, 0); + __privateAdd(this, _loading, null); + __privateAdd(this, _createSink, null); + __privateAdd(this, _usedSink, null); + __privateAdd(this, _destroyed, false); + __privateAdd(this, _preparing, false); + __privateAdd(this, _poster, new Poster()); + __privateAdd(this, _renderer); + __privateAdd(this, _onError); this.canvas = canvas; this.ctx = ctx; this.events = events; @@ -24775,33 +25007,171 @@ class VideoEngine { this.playbackRate = 1; this.posterDrawn = false; this.isFetching = false; + __privateSet(this, _onError, onError); + __privateSet(this, _renderer, new Renderer(this, () => !__privateGet(this, _preparing), (frame) => __privateMethod(this, _VideoEngine_instances, draw_fn).call(this, frame, true), (error) => __privateMethod(this, _VideoEngine_instances, report_fn).call(this, error))); } - async preflight(url, signal, isCurrent) { - return preflightRange(url, this.preflightRange, this.events, signal, isCurrent); + async preflight(source, signal, current) { + return preflightRange(source, this.preflightRange, this.events, signal, current); } drawPoster() { - if (!this.poster || this.posterDrawn) + if (__privateGet(this, _destroyed) || !this.poster || this.posterDrawn) return; - const img = new Image(); - img.onload = () => { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); - this.canvas.width = img.naturalWidth || this.canvas.width; - this.canvas.height = img.naturalHeight || this.canvas.height; - this.ctx.drawImage(img, 0, 0, this.canvas.width, this.canvas.height); + const generation = __privateGet(this, _generation); + __privateGet(this, _poster).draw(this.poster, () => __privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation), (image) => { + this.clear(); + this.canvas.width = image.naturalWidth || this.canvas.width; + this.canvas.height = image.naturalHeight || this.canvas.height; + __privateMethod(this, _VideoEngine_instances, context_fn).call(this).drawImage(image, 0, 0, this.canvas.width, this.canvas.height); this.posterDrawn = true; - }; - img.src = this.poster; + }, (error) => __privateMethod(this, _VideoEngine_instances, report_fn).call(this, error)); } async stopIterator() { - await this.videoIterator?.return(); + const iterator = this.videoIterator; this.videoIterator = null; + this.nextFrame = null; + await releaseIterator(iterator); } clear() { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); + __privateMethod(this, _VideoEngine_instances, context_fn).call(this).clearRect(0, 0, this.canvas.width, this.canvas.height); + } + cancelPending() { + __privateWrapper(this, _generation)._++; + __privateWrapper(this, _iteration)._++; + this.stop(); + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + __privateGet(this, _poster).cancel(); + __privateSet(this, _preparing, false); + __privateSet(this, _loading, null); + __privateSet(this, _createSink, null); + __privateSet(this, _usedSink, null); + this.videoSink = null; + this.input = null; } async load(media, onMetadata) { - ++this.asyncId; - await this.stopIterator(); + if (__privateGet(this, _destroyed)) + return; + this.cancelPending(); + const generation = __privateGet(this, _generation); + const iteration = __privateGet(this, _iteration); + __privateSet(this, _preparing, true); + const pending = Promise.resolve().then(() => __privateMethod(this, _VideoEngine_instances, load_fn).call(this, media, generation, iteration, onMetadata)); + __privateSet(this, _loading, pending); + try { + await pending; + } finally { + if (__privateGet(this, _loading) === pending) + __privateSet(this, _loading, null); + } + } + handleNoVideoTrack() { + if (__privateGet(this, _destroyed)) + return; + this.videoSink = null; + this.width = 0; + this.height = 0; + this.canvas.width = 0; + this.canvas.height = 0; + this.clear(); + this.drawPoster(); + } + async resetIterator(time) { + if (__privateGet(this, _destroyed)) + return; + const generation = __privateGet(this, _generation); + const iteration = ++__privateWrapper(this, _iteration)._; + const loading = __privateGet(this, _loading); + this.stop(); + __privateGet(this, _poster).cancel(); + __privateSet(this, _preparing, true); + try { + if (loading) + await loading; + await __privateMethod(this, _VideoEngine_instances, reset_fn).call(this, time, generation, iteration); + } catch (error) { + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) && __privateGet(this, _iteration) === iteration) { + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + throw error; + } + } finally { + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) && __privateGet(this, _iteration) === iteration) + __privateSet(this, _preparing, false); + } + } + async updateNextFrame(localId) { + await __privateGet(this, _renderer).update(localId); + } + render() { + __privateGet(this, _renderer).render(); + } + start(audio) { + __privateGet(this, _renderer).start(audio); + } + stop() { + __privateGet(this, _renderer).stop(); + } + async seek(time) { + await this.resetIterator(time); + } + setPlaybackRate(rate) { + this.playbackRate = Math.max(0.1, Number(rate) || 1); + } + destroy() { + if (__privateGet(this, _destroyed)) + return; + __privateSet(this, _destroyed, true); + __privateWrapper(this, _generation)._++; + __privateGet(this, _renderer).destroy(); + __privateGet(this, _poster).cancel(); + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + this.posterDrawn = false; + __privateSet(this, _createSink, null); + __privateSet(this, _usedSink, null); + this.videoSink = null; + this.input = null; + this.audioClock = null; + } +} +_generation = new WeakMap(); +_iteration = new WeakMap(); +_loading = new WeakMap(); +_createSink = new WeakMap(); +_usedSink = new WeakMap(); +_destroyed = new WeakMap(); +_preparing = new WeakMap(); +_poster = new WeakMap(); +_renderer = new WeakMap(); +_onError = new WeakMap(); +_VideoEngine_instances = new WeakSet(); +current_fn = function(generation) { + return !__privateGet(this, _destroyed) && __privateGet(this, _generation) === generation; +}; +context_fn = function() { + if (!this.ctx) + throw new Error("Canvas 2D context is unavailable."); + return this.ctx; +}; +report_fn = function(error) { + if (__privateGet(this, _destroyed)) + return; + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + if (__privateGet(this, _onError)) + __privateGet(this, _onError).call(this, error); + else + this.events.emit("error", error); +}; +release_fn = function() { + void this.stopIterator().catch((error) => console.warn("MediaBunny iterator cleanup error:", error)); +}; +draw_fn = function(frame, clear) { + __privateGet(this, _poster).cancel(); + if (clear) + this.clear(); + __privateMethod(this, _VideoEngine_instances, context_fn).call(this).drawImage(frame.canvas, 0, 0); +}; +load_fn = async function(media, generation, iteration, onMetadata) { + if (!__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + return; + try { this.clear(); this.posterDrawn = false; const { input, videoTrack, duration } = media; @@ -24812,139 +25182,61 @@ class VideoEngine { onMetadata?.(); return; } - if (videoTrack.codec === null || !await videoTrack.canDecode()) { + const decodable = videoTrack.codec !== null && await videoTrack.canDecode(); + if (!__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + return; + if (!decodable) { this.handleNoVideoTrack(); onMetadata?.(); return; } const transparent = await videoTrack.canBeTransparent(); - this.videoSink = new CanvasSink(videoTrack, { - poolSize: 2, - fit: "contain", - alpha: transparent - }); + if (!__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + return; + __privateSet(this, _createSink, () => new CanvasSink(videoTrack, { poolSize: 2, fit: "contain", alpha: transparent })); + this.videoSink = __privateGet(this, _createSink).call(this); this.width = videoTrack.displayWidth; this.height = videoTrack.displayHeight; this.canvas.width = this.width; this.canvas.height = this.height; onMetadata?.(); - await this.resetIterator(0); + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + await __privateMethod(this, _VideoEngine_instances, reset_fn).call(this, 0, generation, iteration); + } catch (error) { + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) { + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + throw error; + } + } finally { + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) && __privateGet(this, _iteration) === iteration) + __privateSet(this, _preparing, false); } - handleNoVideoTrack() { - this.videoSink = null; - this.width = 0; - this.height = 0; - this.canvas.width = 0; - this.canvas.height = 0; - this.clear(); +}; +reset_fn = async function(time, generation, iteration) { + if (!__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) || __privateGet(this, _iteration) !== iteration) + return; + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + if (__privateGet(this, _createSink) && this.videoSink === __privateGet(this, _usedSink)) + this.videoSink = __privateGet(this, _createSink).call(this); + const sink = this.videoSink; + if (!sink || !__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + return; + __privateSet(this, _usedSink, sink); + const iterator = sink.canvases(time); + this.videoIterator = iterator; + const current = () => __privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) && __privateGet(this, _iteration) === iteration && this.videoIterator === iterator; + const first = await readCanvas(iterator); + if (!current()) + return; + const second = await readCanvas(iterator); + if (!current()) + return; + this.nextFrame = second; + if (first) + __privateMethod(this, _VideoEngine_instances, draw_fn).call(this, first, false); + else this.drawPoster(); - } - async resetIterator(time) { - await this.stopIterator(); - if (!this.videoSink) - return; - this.videoIterator = this.videoSink.canvases(time); - const first = (await this.videoIterator.next()).value ?? null; - const second = (await this.videoIterator.next()).value ?? null; - this.nextFrame = second; - if (first) { - this.ctx.drawImage(first.canvas, 0, 0); - } else { - this.drawPoster(); - } - } - async updateNextFrame(localId) { - if (!this.videoIterator || this.isFetching) - return; - this.isFetching = true; - try { - while (true) { - const frame = (await this.videoIterator.next()).value ?? null; - if (!frame || localId !== this.asyncId) - return; - const t = this.audioClock.currentTime; - const tolerance = this.dropLateFrames ? Math.max(0.06, this.avSyncTolerance / Math.max(1, this.playbackRate)) : 0; - if (this.dropLateFrames && frame.timestamp < t - tolerance) { - continue; - } - if (frame.timestamp <= t + tolerance) { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); - this.ctx.drawImage(frame.canvas, 0, 0); - if (!this.dropLateFrames && frame.timestamp > t) { - this.nextFrame = null; - return; - } - } else { - this.nextFrame = frame; - return; - } - } - } finally { - this.isFetching = false; - } - } - render() { - if (!this.audioClock) - return; - const t = this.audioClock.currentTime; - const now = Date.now(); - if (now - this.lastTimeUpdate >= this.timeupdateInterval) { - this.events.emit("timeupdate"); - this.lastTimeUpdate = now; - } - if (Number.isFinite(this.duration) && t >= this.duration) { - this.stop(); - this.stalled = false; - this.events.emit("ended"); - this.events.emit("pause"); - this.events.emit("canplay"); - return; - } - if (this.nextFrame && this.nextFrame.timestamp <= t) { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); - this.ctx.drawImage(this.nextFrame.canvas, 0, 0); - this.nextFrame = null; - this.updateNextFrame(this.asyncId); - if (this.stalled) { - this.events.emit("canplay"); - this.events.emit("playing"); - this.stalled = false; - } - } else if (!this.nextFrame) { - this.updateNextFrame(this.asyncId); - if (!this.nextFrame && Number.isFinite(this.duration) && t < this.duration && !this.stalled) { - this.stalled = true; - this.events.emit("waiting"); - } - } - this.rafId = requestAnimationFrame(() => this.render()); - } - start(audioEngine) { - this.audioClock = audioEngine; - this.asyncId++; - this.stalled = false; - this.updateNextFrame(this.asyncId); - this.rafId = requestAnimationFrame(() => this.render()); - } - stop() { - cancelAnimationFrame(this.rafId); - } - async seek(time) { - this.asyncId++; - await this.resetIterator(time); - } - setPlaybackRate(rate) { - this.playbackRate = Math.max(0.1, Number(rate) || 1); - } - destroy() { - this.asyncId++; - this.stop(); - this.stopIterator(); - this.posterDrawn = false; - this.videoSink = null; - this.input = null; - } -} +}; class MediaBunnyEngine { constructor({ canvas, ctx, events, option = {} }) { __privateAdd(this, _playback); @@ -24959,7 +25251,15 @@ class MediaBunnyEngine { avSyncTolerance: option.avSyncTolerance ?? 0.12, dropLateFrames: option.dropLateFrames ?? false, poster: option.poster ?? "", - preflightRange: option.preflightRange ?? false + preflightRange: option.preflightRange ?? false, + onError: (error) => { + try { + this.pause(); + } catch (failure) { + console.warn("MediaBunny video failure cleanup:", failure); + } + this.reportError(error); + } }); this.paused = true; this.ended = false; @@ -24986,6 +25286,7 @@ class MediaBunnyEngine { return; const id = ++this.loadSeq; __privateGet(this, _playback).invalidate(); + this.video.cancelPending(); this.loadSession?.cancel(); if (id !== this.loadSeq || this.destroyed) return; @@ -25009,6 +25310,7 @@ class MediaBunnyEngine { return; const failed = ++this.loadSeq; __privateGet(this, _playback).invalidate(); + this.video.cancelPending(); session.cancel(); if (failed !== this.loadSeq || this.destroyed) return; diff --git a/package.json b/package.json index 1f67dcf71..0828b3057 100644 --- a/package.json +++ b/package.json @@ -51,7 +51,7 @@ "ci:build": "yarn build:types && yarn build all && yarn build:i18n && yarn build:ts && yarn build:docs && yarn test:imports", "test:imports": "node --test test/esm.test.js test/i18n.test.js test/ssr.test.js", "typecheck": "node scripts/typecheck.mjs", - "test:unit": "node --test test/mediabunny.test.js test/mediabunny-shim.test.js test/mediabunny-coordination.test.js test/mediabunny-load.test.js test/mediabunny-input.test.js test/dpip.test.js test/dpip-lifecycle.test.js test/canvas.test.js test/canvas-lifecycle.test.js test/ambilight.test.js test/ambilight-lifecycle.test.js test/ambilight-proxy.test.js test/vast.test.js test/vast-lifecycle.test.js test/ads.test.js test/ads-lifecycle.test.js test/playback.test.js test/dash-control.test.js test/dash-contract.test.js test/dash-lifecycle.test.js test/dash-events.test.js test/hls-control.test.js test/audio-track.test.js test/public-behavior.test.js test/helpers.test.js test/chapter.test.js test/utils.test.js test/resource-scope.test.js test/instance-lifecycle.test.js test/options.test.js test/media-hosts.test.js test/plugins.test.js test/source.test.js test/playback-properties.test.js test/media-events.test.js test/template-resources.test.js test/core-vendor.test.js test/component-resources.test.js test/setting-model.test.js test/setting-layout.test.js test/setting-resources.test.js test/subtitle.test.js test/display-native.test.js test/display-video-fullscreen.test.js test/display-pip.test.js test/display-mini.test.js test/display-sizing.test.js test/display-orientation.test.js test/hotkey.test.js test/listener-registry.test.js test/global-events.test.js test/pointer-events.test.js test/gesture.test.js test/event-scheduling.test.js test/notice.test.js test/fast-forward.test.js test/auto-playback.test.js test/builtin-layers.test.js test/prompt-components.test.js test/screenshot.test.js test/thumbnails.test.js test/progress.test.js test/environment.test.js test/storage.test.js test/facade-properties.test.js test/dom-boundaries.test.js test/initialization.test.js test/entry.test.js test/accessibility-button.test.js test/accessibility-focus.test.js test/accessibility-slider.test.js", + "test:unit": "node --test test/mediabunny.test.js test/mediabunny-shim.test.js test/mediabunny-coordination.test.js test/mediabunny-video.test.js test/mediabunny-load.test.js test/mediabunny-input.test.js test/dpip.test.js test/dpip-lifecycle.test.js test/canvas.test.js test/canvas-lifecycle.test.js test/ambilight.test.js test/ambilight-lifecycle.test.js test/ambilight-proxy.test.js test/vast.test.js test/vast-lifecycle.test.js test/ads.test.js test/ads-lifecycle.test.js test/playback.test.js test/dash-control.test.js test/dash-contract.test.js test/dash-lifecycle.test.js test/dash-events.test.js test/hls-control.test.js test/audio-track.test.js test/public-behavior.test.js test/helpers.test.js test/chapter.test.js test/utils.test.js test/resource-scope.test.js test/instance-lifecycle.test.js test/options.test.js test/media-hosts.test.js test/plugins.test.js test/source.test.js test/playback-properties.test.js test/media-events.test.js test/template-resources.test.js test/core-vendor.test.js test/component-resources.test.js test/setting-model.test.js test/setting-layout.test.js test/setting-resources.test.js test/subtitle.test.js test/display-native.test.js test/display-video-fullscreen.test.js test/display-pip.test.js test/display-mini.test.js test/display-sizing.test.js test/display-orientation.test.js test/hotkey.test.js test/listener-registry.test.js test/global-events.test.js test/pointer-events.test.js test/gesture.test.js test/event-scheduling.test.js test/notice.test.js test/fast-forward.test.js test/auto-playback.test.js test/builtin-layers.test.js test/prompt-components.test.js test/screenshot.test.js test/thumbnails.test.js test/progress.test.js test/environment.test.js test/storage.test.js test/facade-properties.test.js test/dom-boundaries.test.js test/initialization.test.js test/entry.test.js test/accessibility-button.test.js test/accessibility-focus.test.js test/accessibility-slider.test.js", "test:coverage": "node --test test/coverage.test.js && node scripts/coverage.mjs", "test": "yarn test:node && yarn test:baseline", "test:browser": "playwright test", @@ -76,7 +76,7 @@ "test:canvas-types-package": "node refactor/scripts/canvas-package-types.mjs", "test:dpip": "node --test test/dpip.test.js test/dpip-lifecycle.test.js", "test:dpip-types-package": "node refactor/scripts/dpip-package-types.mjs", - "test:mediabunny": "node --test test/mediabunny.test.js test/mediabunny-shim.test.js test/mediabunny-coordination.test.js test/mediabunny-load.test.js test/mediabunny-input.test.js" + "test:mediabunny": "node --test test/mediabunny.test.js test/mediabunny-shim.test.js test/mediabunny-coordination.test.js test/mediabunny-video.test.js test/mediabunny-load.test.js test/mediabunny-input.test.js" }, "browserslist": "last 1 Chrome version", "devDependencies": { diff --git a/packages/artplayer-proxy-mediabunny/ARCHITECTURE.md b/packages/artplayer-proxy-mediabunny/ARCHITECTURE.md index 51133a204..4a79bfd44 100644 --- a/packages/artplayer-proxy-mediabunny/ARCHITECTURE.md +++ b/packages/artplayer-proxy-mediabunny/ARCHITECTURE.md @@ -19,18 +19,22 @@ declarations, the factory signature, canvas forwarding, or package entrypoints. | `playback.ts` | Playback intent, cancellable play/seek/replacement operations and shared pending audio resume | | `readiness.ts` | One metadata publication after both participants, guarded event sequences | | `hls-selection.ts` | Source-bound track queries, pairing and active replacement errors | -| `VideoEngine.js` / `AudioEngine.js` | Current native decoding, rendering, seeking, Web Audio clock and scheduling | +| `VideoEngine.ts` | Video capability/setup, source and seek ownership, first frames and terminal cleanup | +| `video-frames.ts` | Shared pending iterator reads, idempotent iterator release and existing frame timing policy | +| `video-renderer.ts` | Owned RAF, stale frame rejection, clock-driven draw/stall/end events | +| `video-poster.ts` | Per-request image callbacks, source guards and handler cleanup | +| `AudioEngine.js` | Remaining Web Audio clock, audio decoding and scheduling implementation | | `VideoShim.ts` / `EventTarget.ts` | Video-like descriptors, synchronous/Promise forwarding and owned event lifecycle | | `shim-values.ts` | Existing volume coercion and synthetic TimeRanges values | | `shim-frames.ts` | Synthetic frame callbacks, per-instance RAF ownership and terminal cleanup | | `engine-types.ts` / `engine-ports.ts` | Internal shim, coordinator and decoder interfaces | -| `AudioEngine.d.ts` / `VideoEngine.d.ts` | Temporary boundaries for JS decoders, removed in MB-06/05 | +| `AudioEngine.d.ts` | Temporary boundary for the remaining JS audio engine, removed in MB-06 | | `m3u8.js` | Current ArtPlayer control/setting integration | -The sixteen production TypeScript modules use strict checking with `skipLibCheck: false` -and no ambient Node types. The coordinator is an actual checked implementation. The two -adjacent decoder declarations are temporary boundaries, not checking of their JavaScript -implementations. Remaining JavaScript is scheduled in PKG-MB-05/06/07/08. +The twenty production TypeScript modules use strict checking with `skipLibCheck: false` +and no ambient Node types. The coordinator and video engine are checked implementations. +The adjacent audio declaration is a temporary boundary, not checking of its JavaScript +implementation. Remaining JavaScript is scheduled in PKG-MB-06/07/08. Do not describe the whole package as migrated yet. The shim keeps its existing own-property order and direct prototype surface because @@ -82,7 +86,7 @@ for the seek completion signal, resolved before optional resume to avoid a cycle A pending AudioContext resume is shared across play-pause-play; only the current operation starts video and emits play/playing. Source change and destroy invalidate both operations. Cancellation settles the public operation while observing the underlying late result; -actual late decoder work still belongs to MB-05/06. +video frame ownership is detailed below; remaining audio work belongs to MB-06. Normal play, pause, seek/resume and HLS replacement event order is retained. Before each event the coordinator rechecks ownership, since a listener may synchronously pause, seek, @@ -99,6 +103,43 @@ This corrects the old false-ready state; normal valid input event order is prese Existing-track unsupported-codec handling remains a decoder capability task, not evidence that every capability failure has been fixed. +## Video frame ownership + +VideoEngine keeps source/load generation separate from seek iteration and renderer activity. +A new source calls cancelPending before track selection starts, so an old seek cannot draw +while the new source is still parsing. Seek during capability detection waits for that load +without canceling its metadata; only the latest seek may install or draw its frames. +Ordinary paused seek still displays its first target frame and queues the second. + +Iterator detachment is synchronous. The old return Promise is observed without blocking a +new load on obsolete reads; repeated release calls return the same cleanup Promise. Late +completion cannot clear the current iterator or its fetching flag. Stop/start shares an +already pending next() for the same iterator instead of issuing concurrent reads. Pause +invalidates render work; it does not cancel a legitimate paused seek's target frame. + +Each seek after the initial iterator creates a fresh CanvasSink with its own two-canvas pool. +Concurrent obsolete decoders can otherwise overwrite the pixels of a queued frame even when +the proxy discards their returned objects. Sink identity is internal and may change on seek; +public canvas identity stays stable. Tests intercept sink prototypes to follow new instances. +CanvasSink retains poolSize 2, contain fit and track transparency. Its implementation closes +VideoSample after drawing into the pooled canvas. The proxy releases iterators and references; +WrappedCanvas is not a VideoFrame and must not receive close(). Default dropLateFrames remains +false, with the same tolerance/rate formula when enabled. Start preserves the queued second +frame until it is consumed instead of replacing it through premature prefetch. There is no +added frame copy. + +Each renderer owns one RAF, including ID zero. Stop/destroy and event-listener reentry make +queued callbacks inert; an instance that never scheduled a frame cannot cancel another +instance's frame. Normal timeupdate, stall recovery and ended ordering is preserved, while +reentrant pause/source/destroy/restart stops the obsolete event sequence. Poster image +callbacks have source and request identity and are detached on replacement, draw or destroy. + +Background decoder failure stops rendering and reports one media error through the coordinator, +even if audio cleanup fails. Iterator cleanup failures are observed and warned; explicit +stopIterator still rejects. Missing 2D context fails at use with a descriptive error, rather +than becoming falsely ready. Capability handling for existing undecodable tracks remains +under MB-CAP-01/MB-READY-01; the current no-video fallback is preserved for that separate review. + ## Types and dependencies The locked runtime SDK remains MediaBunny 1.56.1. Its pinned WebCodecs declaration @@ -118,6 +159,7 @@ node node_modules/typescript/bin/tsc -p packages/artplayer-proxy-mediabunny/tsco yarn build artplayer-proxy-mediabunny yarn test:browser test/browser/mediabunny-inputs.spec.js test/browser/mediabunny.spec.js test/browser/mediabunny-load.spec.js yarn test:browser test/browser/mediabunny-shim.spec.js +yarn test:browser test/browser/mediabunny-video.spec.js ``` Node tests use actual SDK parsing and controlled lifecycle interleavings. 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e=et(t);if(e)return{primaries:w[e.colourPrimaries],transfer:S[e.transferCharacteristics],matrix:P[e.matrixCoefficients],fullRange:!!e.fullRangeFlag}}}break;case"hevc":{let t=e.hevcCodecInfo?.arrays.find(e=>e.nalUnitType===Ue.SPS_NUT)?.nalUnits[0];if(!t&&e.codecDescription&&(t=(e=>{try{const t=g(e);let i=0;const r=t.getUint8(i++),a=t.getUint8(i++),s=a>>6&3,n=a>>5&1,o=31&a,c=t.getUint32(i,!1);i+=4;const l=e.subarray(i,i+6);i+=6;const u=t.getUint8(i++),d=(15&t.getUint8(i++))<<8|t.getUint8(i++),h=3&t.getUint8(i++),f=3&t.getUint8(i++),m=7&t.getUint8(i++),p=7&t.getUint8(i++),k=t.getUint16(i,!1);i+=2;const y=t.getUint8(i++),b=y>>6&3,w=y>>3&7,T=y>>2&1,S=3&y,v=t.getUint8(i++),P=[];for(let g=0;g>7&1,s=63&r,n=t.getUint16(i,!1);i+=2;const o=[];for(let c=0;ce.nalUnitType===Ue.SPS_NUT)?.nalUnits[0]),t){const e=st(t);if(e)return{primaries:w[e.colourPrimaries],transfer:S[e.transferCharacteristics],matrix:P[e.matrixCoefficients],fullRange:!!e.fullRangeFlag}}}break;case"vp8":break;case"vp9":if(e.vp9CodecInfo)return{primaries:w[e.vp9CodecInfo.colourPrimaries],transfer:S[e.vp9CodecInfo.transferCharacteristics],matrix:P[e.vp9CodecInfo.matrixCoefficients],fullRange:!!e.vp9CodecInfo.videoFullRangeFlag};break;case"av1":if(e.av1CodecInfo)return{primaries:w[e.av1CodecInfo.colourPrimaries],transfer:S[e.av1CodecInfo.transferCharacteristics],matrix:P[e.av1CodecInfo.matrixCoefficients],fullRange:!!e.av1CodecInfo.videoFullRangeFlag};break;case"prores":if(e.proresCodecInfo)return{primaries:w[e.proresCodecInfo.colourPrimaries],transfer:S[e.proresCodecInfo.transferCharacteristics],matrix:P[e.proresCodecInfo.matrixCoefficients],fullRange:e.proresCodecInfo.fullRange}}return{primaries:void 0,transfer:void 0,matrix:void 0,fullRange:void 0}},si=e=>{const{codec:t,codecDescription:i,aacCodecInfo:r,dtsFormat:a}=e;if("aac"===t){if(!r)throw new TypeError("AAC codec info must be provided.");if(r.isMpeg2)return"mp4a.67";{let e;if(null!==r.objectType)e=r.objectType;else{e=Ae(i).objectType}return`mp4a.40.${e}`}}if("mp3"===t)return"mp3";if("opus"===t)return"opus";if("vorbis"===t)return"vorbis";if("flac"===t)return"flac";if("ac3"===t)return"ac-3";if("eac3"===t)return"ec-3";if("dts"===t)return a??"dtsc";if(t&&Gt.includes(t))return t;throw new TypeError(`Unhandled codec '${t}'.`)},ni=48e3,oi=/^pcm-([usf])(\d+)(be)?$/,ci=e=>{if(l(Gt.includes(e)),"ulaw"===e)return{dataType:"ulaw",sampleSize:1,littleEndian:!0,silentValue:255};if("alaw"===e)return{dataType:"alaw",sampleSize:1,littleEndian:!0,silentValue:213};const t=oi.exec(e);let i;l(t),i="u"===t[1]?"unsigned":"s"===t[1]?"signed":"float";return{dataType:i,sampleSize:Number(t[2])/8,littleEndian:"be"!==t[3],silentValue:"pcm-u8"===e?128:0}},li=e=>e.startsWith("avc1")||e.startsWith("avc3")?"avc":e.startsWith("hev1")||e.startsWith("hvc1")?"hevc":"vp8"===e?"vp8":e.startsWith("vp09")?"vp9":e.startsWith("av01")?"av1":ti.includes(e)?"prores":"mp3"===e||"mp4a.69"===e||"mp4a.6B"===e||"mp4a.6b"===e||"mp4a.40.34"===e?"mp3":e.startsWith("mp4a.40.")||"mp4a.67"===e?"aac":"opus"===e?"opus":"vorbis"===e?"vorbis":"flac"===e?"flac":"ac-3"===e||"ac3"===e?"ac3":"ec-3"===e||"eac3"===e?"eac3":ii.includes(e)?"dts":"ulaw"===e?"ulaw":"alaw"===e?"alaw":oi.test(e)?e:"webvtt"===e?"webvtt":null,ui=[44100,48e3,32e3],di=[-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,32,40,48,56,64,80,96,112,128,160,192,224,256,320,-1,-1,32,48,56,64,80,96,112,128,160,192,224,256,320,384,-1,-1,32,64,96,128,160,192,224,256,288,320,352,384,416,448,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,8,16,24,32,40,48,56,64,80,96,112,128,144,160,-1,-1,32,48,56,64,80,96,112,128,144,160,176,192,224,256,-1],hi=1483304551,fi=1231971951,mi=(e,t)=>3===e?3===t?21:36:3===t?13:21,pi=(e,t)=>{const i=e>>>24,r=e>>>16&255,a=e>>>8&255,s=255&e;if(255!==i&&255!==r&&255!==a&&255!==s)return{header:null,bytesAdvanced:4};if(255!==i)return{header:null,bytesAdvanced:1};if(224!==(224&r))return{header:null,bytesAdvanced:1};let n=0,o=0;16&r?n=8&r?0:1:(n=1,o=1);const c=r>>3&3,l=r>>1&3,u=(a>>2&3)%3,d=s>>6&3,h=s>>4&3,f=s>>3&1,m=s>>2&1,p=3&s,g=di[16*n*4+16*l+(a>>4&15)];if(-1===g)return{header:null,bytesAdvanced:1};const k=1e3*g,y=ui[u]>>n+o,b=((e,t,i,r,a)=>0===t?0:1===t?Math.floor(144*i/(r<>1&1);if(null!==t&&t{let t=2130706432,i=0;for(;0!==t;)i>>=1,i|=e&t,t>>=8;return i};var ki,yi;(yi=ki||(ki={}))[yi.FrameCount=1]="FrameCount",yi[yi.FileSize=2]="FileSize",yi[yi.Toc=4]="Toc";const bi=e=>3===e?1:2;class wi{constructor(e){this.input=e}dispose(){}}const Ti=new Uint8Array(0);class Si{constructor(e,t,i,r,a=-1,s,n){if(this.data=e,this.type=t,this.timestamp=i,this.duration=r,this.sequenceNumber=a,e===Ti&&void 0===s)throw new Error("Internal error: byteLength must be explicitly provided when constructing metadata-only packets.");if(void 0===s&&(s=e.byteLength),!(e instanceof Uint8Array))throw new TypeError("data must be a Uint8Array.");if("key"!==t&&"delta"!==t)throw new TypeError('type must be either "key" or "delta".');if(!Number.isFinite(i))throw new TypeError("timestamp must be a number.");if(!Number.isFinite(r)||r<0)throw new TypeError("duration must be a non-negative number.");if(!Number.isFinite(a))throw new TypeError("sequenceNumber must be a number.");if(!Number.isInteger(s)||s<0)throw new TypeError("byteLength must be a non-negative integer.");if(void 0!==n&&("object"!==typeof n||!n))throw new TypeError("sideData, when provided, must be an object.");if(void 0!==n?.alpha&&!(n.alpha instanceof Uint8Array))throw new TypeError("sideData.alpha, when provided, must be a Uint8Array.");if(void 0!==n?.alphaByteLength&&(!Number.isInteger(n.alphaByteLength)||n.alphaByteLength<0))throw new TypeError("sideData.alphaByteLength, when provided, must be a non-negative integer.");this.byteLength=s,this.sideData=n??{},this.sideData.alpha&&void 0===this.sideData.alphaByteLength&&(this.sideData.alphaByteLength=this.sideData.alpha.byteLength)}get isMetadataOnly(){return this.data===Ti}get microsecondTimestamp(){return Math.trunc(J*this.timestamp)}get microsecondDuration(){return Math.trunc(J*this.duration)}toEncodedVideoChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("EncodedVideoChunk is not available in this environment.");return new EncodedVideoChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}alphaToEncodedVideoChunk(e=this.type){if(!this.sideData.alpha)throw new TypeError("This packet does not contain alpha side data.");if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("EncodedVideoChunk is not available in this environment.");return new EncodedVideoChunk({data:this.sideData.alpha,type:e,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}toEncodedAudioChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to an audio chunk.");if("undefined"===typeof EncodedAudioChunk)throw new Error("EncodedAudioChunk is not available in this environment.");return new EncodedAudioChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}static fromEncodedChunk(e,t){if(!(e instanceof EncodedVideoChunk||e instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedVideoChunk or EncodedAudioChunk.");const i=new Uint8Array(e.byteLength);return e.copyTo(i),new Si(i,e.type,e.timestamp/1e6,(e.duration??0)/1e6,void 0,void 0,t)}clone(e){if(void 0!==e&&("object"!==typeof e||null===e))throw new TypeError("options, when provided, must be an object.");if(void 0!==e?.data&&!(e.data instanceof Uint8Array))throw new TypeError("options.data, when provided, must be a Uint8Array.");if(void 0!==e?.type&&"key"!==e.type&&"delta"!==e.type)throw new TypeError('options.type, when provided, must be either "key" or "delta".');if(void 0!==e?.timestamp&&!Number.isFinite(e.timestamp))throw new TypeError("options.timestamp, when provided, must be a number.");if(void 0!==e?.duration&&!Number.isFinite(e.duration))throw new TypeError("options.duration, when provided, must be a number.");if(void 0!==e?.sequenceNumber&&!Number.isFinite(e.sequenceNumber))throw new TypeError("options.sequenceNumber, when provided, must be a number.");if(void 0!==e?.sideData&&("object"!==typeof e.sideData||null===e.sideData))throw new TypeError("options.sideData, when provided, must be an object.");return new Si(e?.data??this.data,e?.type??this.type,e?.timestamp??this.timestamp,e?.duration??this.duration,e?.sequenceNumber??this.sequenceNumber,this.byteLength,e?.sideData??this.sideData)}}const vi=e=>{const t=g(e);let i=0;const r=t.getUint8(i);i+=1,i+=3;const a=_(e.subarray(i,i+16));i+=16;let s=null;if(r>0){const r=t.getUint32(i);if(i+=4,r>0){s=[];for(let t=0;te.systemId===t.systemId&&((e,t)=>{if(e.length!==t.length)return!1;for(let i=0;i{let t=Bo(e);const i=Oo(e,4);let r=8;1===t&&(t=Fo(e),r=16);const a=t-r;return a<0?null:{name:i,totalSize:t,headerSize:r,contentSize:a}},xi=e=>_o(e)/65536,Ci=e=>_o(e)/1073741824,Bi=e=>{let t=0;for(let i=0;i<4;i++){t<<=7;const i=So(e);if(t|=127&i,0===(128&i))break}return t},Ei=e=>{let t=Po(e);return e.skip(2),t=Math.min(t,e.remainingLength),k.decode(To(e,t))},_i=e=>{const t=Ii(e);if(!t||"data"!==t.name)return null;if(e.remainingLength<8)return null;const i=Bo(e);e.skip(4);const r=To(e,t.contentSize-8);switch(i){case 1:return k.decode(r);case 2:return new TextDecoder("utf-16be").decode(r);case 13:return new Ce(r,"image/jpeg");case 14:return new Ce(r,"image/png");case 27:return new Ce(r,"image/bmp");default:return r}},Ri=16,Fi=new Uint32Array(256),Ai=new Uint32Array(256),Di=new Uint32Array(256),Mi=new Uint32Array(256),Ni=new Uint32Array(256),Oi=new Uint32Array(256),Li=new Uint32Array(10);let zi=!1;class Ui{constructor(){this.roundkey=new Uint32Array(44),this.iv=new Uint32Array(Ri/Uint32Array.BYTES_PER_ELEMENT),this.in=new Uint8Array(Ri),this.out=new Uint8Array(Ri),this.inView=new DataView(this.in.buffer),this.outView=new DataView(this.out.buffer)}init({key:e,iv:t}){l(16===e.byteLength),l(16===t.byteLength),zi||(()=>{const e=new Uint8Array(256),t=new Uint8Array(256),i=new Uint8Array(256);for(let s=0,n=1;s<256;s++)i[s]=n,t[n]=s,n=n^n<<1^(128&n?283:0);const r=(e,r)=>e&&r?i[(t[e]+t[r])%255]:0;e[0]=99;for(let s=1;s<256;s++){const r=i[255-t[s]];let a=r^r<<1^r<<2^r<<3^r<<4;a=a>>>8^255&a^99,e[s]=a}for(let s=0;s<256;s++){const t=e[s],i=e.indexOf(s);Fi[s]=t<<24|t<<16|t<<8|t,Oi[s]=i<<24|i<<16|i<<8|i;const a=r(i,14)<<24|r(i,9)<<16|r(i,13)<<8|r(i,11);Ai[s]=a,Di[s]=a>>>8|a<<24,Mi[s]=a>>>16|a<<16,Ni[s]=a>>>24|a<<8}let a=1;for(let s=0;s<10;s++)Li[s]=a<<24,a=a<<1^(128&a?283:0);zi=!0})();const i=new DataView(e.buffer,e.byteOffset,e.byteLength),r=new DataView(t.buffer,t.byteOffset,t.byteLength);this.roundkey[0]=i.getUint32(0,!1),this.roundkey[1]=i.getUint32(4,!1),this.roundkey[2]=i.getUint32(8,!1),this.roundkey[3]=i.getUint32(12,!1),this.iv[0]=r.getUint32(0,!1),this.iv[1]=r.getUint32(4,!1),this.iv[2]=r.getUint32(8,!1),this.iv[3]=r.getUint32(12,!1);for(let a=4;a<44;a+=4){const e=this.roundkey[a-1];this.roundkey[a]=this.roundkey[a-4]^4278190080&Fi[e>>>16&255]^16711680&Fi[e>>>8&255]^65280&Fi[e>>>0&255]^255&Fi[e>>>24&255]^Li[a/4-1],this.roundkey[a+1]=this.roundkey[a-3]^this.roundkey[a],this.roundkey[a+2]=this.roundkey[a-2]^this.roundkey[a+1],this.roundkey[a+3]=this.roundkey[a-1]^this.roundkey[a+2]}for(let a=0,s=40;a>>24&255]]^Di[255&Fi[t>>>16&255]]^Mi[255&Fi[t>>>8&255]]^Ni[255&Fi[t>>>0&255]]}}decrypt(){let e=this.inView.getUint32(0,!1)^this.roundkey[0],t=this.inView.getUint32(4,!1)^this.roundkey[1],i=this.inView.getUint32(8,!1)^this.roundkey[2],r=this.inView.getUint32(12,!1)^this.roundkey[3];const a=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),n=this.inView.getUint32(8,!1),o=this.inView.getUint32(12,!1);let c,l,u,d;for(let g=1;g<10;g++){const a=4*g;c=Ai[e>>>24]^Di[r>>>16&255]^Mi[i>>>8&255]^Ni[255&t]^this.roundkey[a],l=Ai[t>>>24]^Di[e>>>16&255]^Mi[r>>>8&255]^Ni[255&i]^this.roundkey[a+1],u=Ai[i>>>24]^Di[t>>>16&255]^Mi[e>>>8&255]^Ni[255&r]^this.roundkey[a+2],d=Ai[r>>>24]^Di[i>>>16&255]^Mi[t>>>8&255]^Ni[255&e]^this.roundkey[a+3],e=c,t=l,i=u,r=d}const h=4278190080&Oi[e>>>24&255]^16711680&Oi[r>>>16&255]^65280&Oi[i>>>8&255]^255&Oi[t>>>0&255]^this.roundkey[40],f=4278190080&Oi[t>>>24&255]^16711680&Oi[e>>>16&255]^65280&Oi[r>>>8&255]^255&Oi[i>>>0&255]^this.roundkey[41],m=4278190080&Oi[i>>>24&255]^16711680&Oi[t>>>16&255]^65280&Oi[e>>>8&255]^255&Oi[r>>>0&255]^this.roundkey[42],p=4278190080&Oi[r>>>24&255]^16711680&Oi[i>>>16&255]^65280&Oi[t>>>8&255]^255&Oi[e>>>0&255]^this.roundkey[43];this.outView.setUint32(0,h^this.iv[0],!1),this.outView.setUint32(4,f^this.iv[1],!1),this.outView.setUint32(8,m^this.iv[2],!1),this.outView.setUint32(12,p^this.iv[3],!1),this.iv[0]=a,this.iv[1]=s,this.iv[2]=n,this.iv[3]=o}}class qi extends wi{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.psshBoxes=[],this.currentFragment=null,this.lastReadFragment=null,this.decryptionKeyCache=new Map,this.reader=e._reader}async getTrackBackings(){return await this.readMetadata(),this.tracks.map(e=>e.trackBacking)}async getMimeType(){await this.readMetadata();const e=await this.getTrackBackings(),t=await Promise.all(e.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>"video"===e.info?.type),hasAudio:this.tracks.some(e=>"audio"===e.info?.type),codecStrings:t.filter(Boolean)})}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0,t=!1,i=!1;for(;;){let r=this.reader.requestSliceRange(e,8,16);if(de(r)&&(r=await r),!r)break;const a=e,s=Ii(r);if(!s)break;if("ftyp"===s.name||"styp"===s.name){const e=Oo(r,4);this.isQuickTime="qt "===e}else{if("moov"===s.name){let e=this.reader.requestSlice(r.filePos,s.contentSize);if(de(e)&&(e=await e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice);for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}t=this.isFragmented&&null!==this.reader.fileSize&&this.reader.fileSize>a+s.totalSize,i=!0;break}if("moof"===s.name){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');await this.copyMetadataFromInitInput(this.input._initInput),t=!1,i=!0;break}}e=a+s.totalSize}if(!i&&this.input._initInput&&await this.copyMetadataFromInitInput(this.input._initInput),t){l(null!==this.reader.fileSize);let e=this.reader.requestSlice(this.reader.fileSize-4,4);de(e)&&(e=await e),l(e);const t=Bo(e),i=this.reader.fileSize-t;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(de(e)&&(e=await e),e){const t=Ii(e);if(t&&"mfra"===t.name){let i=this.reader.requestSlice(e.filePos,t.contentSize);de(i)&&(i=await i),i&&this.readContiguousBoxes(i)}}}}})())}async copyMetadataFromInitInput(e){const t=await e._getDemuxer();if(t.constructor!==qi)throw new Error("Init input must match the input's format.");await t.readMetadata(),this.movieTimescale=t.movieTimescale,this.movieDurationInTimescale=t.movieDurationInTimescale,this.metadataTags=t.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=t.fragmentTrackDefaults,this.psshBoxes=t.psshBoxes;for(const i of t.tracks){const e={id:i.id,demuxer:this,trackBacking:null,disposition:i.disposition,timescale:i.timescale,durationInMediaTimescale:i.durationInMediaTimescale,durationInMovieTimescale:i.durationInMovieTimescale,rotation:i.rotation,internalCodecId:i.internalCodecId,name:i.name,languageCode:i.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:i.editListPreviousSegmentDurations,editListOffset:i.editListOffset,encryptionInfo:i.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:i.info};if(i.trackBacking)if(l(e.info),"video"===e.info.type&&-1!==e.info.width){const t=e;e.trackBacking=new Hi(t),this.tracks.push(e)}else if("audio"===e.info.type&&-1!==e.info.numberOfChannels){const t=e;e.trackBacking=new Vi(t),this.tracks.push(e)}}}getSampleTableForTrack(e){if(e.sampleTable)return e.sampleTable;const t={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=t,null===e.sampleTableByteOffset)return t;l(this.moovSlice);const i=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(i),this.currentTrack=null;if("audio"===e.info?.type&&e.info.codec&&Gt.includes(e.info.codec)&&0===t.sampleCompositionTimeOffsets.length){l("audio"===e.info?.type);const i=ci(e.info.codec),r=[],a=[];for(let s=0;se.startIndex),u=t.sampleTimingEntries[l],h=A(t.sampleTimingEntries,c,e=>e.startIndex),f=t.sampleTimingEntries[h],m=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,p=f.startDecodeTimestamp+(c-f.startIndex)*f.delta-m,g=d(r);g&&g.delta===p?g.count++:r.push({startIndex:n.startChunkIndex+s,startDecodeTimestamp:m,count:1,delta:p});const k=n.samplesPerChunk*i.sampleSize*e.info.numberOfChannels;a.push(k)}n.startSampleIndex=n.startChunkIndex,n.samplesPerChunk=1}t.sampleTimingEntries=r,t.sampleSizes=a}if(t.sampleCompositionTimeOffsets.length>0){t.presentationTimestamps=[];for(const e of t.sampleTimingEntries)for(let i=0;ie.presentationTimestamp-t.presentationTimestamp),t.presentationTimestampIndexMap=Array(t.presentationTimestamps.length).fill(-1);for(let e=0;ee.moofOffset===a.moofOffset);if(i)Gi(s,i.timestamp);else{const e=A(t,a.moofOffset-1,e=>e.moofOffset);if(-1!==e){const i=t[e];Gi(s,i.endTimestamp)}}s.startTimestampIsFinal=!0}const i=A(t,s.startTimestamp,e=>e.startTimestamp);if(-1!==i&&t[i].moofOffset===a.moofOffset||t.splice(i+1,0,{moofOffset:a.moofOffset,startTimestamp:s.startTimestamp,endTimestamp:s.endTimestamp}),s.encryptionAuxInfo&&e.encryptionInfo){const t=await Zi(this.reader,e.encryptionInfo,s.encryptionAuxInfo);for(let e=0;e0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;Y(t.languageCode)||(t.languageCode=V)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=Oo(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:{...x},avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=j,this.readContiguousBoxes(e.slice($,X.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const i=So(e);e.skip(3);const r=Bo(e);for(let a=0;a0&&(1===n?(e.skip(4),c=8*Bo(e),e.skip(8)):2===n&&(e.skip(4),l=No(e),o=Bo(e),e.skip(4),c=Bo(e),u=Bo(e),e.skip(8))),t.info.numberOfChannels=o,t.info.sampleRate=l,t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+a.totalSize-e.filePos));const d="enca"===s?t.frmaCodecString:s;if(t.frmaCodecString=null,"mp4a"===d);else if("opus"===d)t.info.codec="opus",t.info.sampleRate=ni;else if("flac"===d)t.info.codec="flac";else if("ulaw"===d)t.info.codec="ulaw";else if("alaw"===d)t.info.codec="alaw";else if("ac-3"===d)t.info.codec="ac3";else if("ec-3"===d)t.info.codec="eac3";else if(ii.includes(d))t.info.codec="dts",t.info.dtsFormat=d;else if("twos"===d)8===c?t.info.codec="pcm-s8":16===c?t.info.codec=t.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(xe._warn(`Unsupported sample size ${c} for codec 'twos'.`),t.info.codec=null);else if("sowt"===d)8===c?t.info.codec="pcm-s8":16===c?t.info.codec="pcm-s16":(xe._warn(`Unsupported sample size ${c} for codec 'sowt'.`),t.info.codec=null);else if("raw "===d)t.info.codec="pcm-u8";else if("in24"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if("in32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if("fl32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if("fl64"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if("ipcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?16===e?t.info.codec="pcm-s16":24===e?t.info.codec="pcm-s24":32===e?t.info.codec="pcm-s32":(xe._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null):16===e?t.info.codec="pcm-s16be":24===e?t.info.codec="pcm-s24be":32===e?t.info.codec="pcm-s32be":(xe._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null)}else if("fpcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?32===e?t.info.codec="pcm-f32":64===e?t.info.codec="pcm-f64":(xe._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null):32===e?t.info.codec="pcm-f32be":64===e?t.info.codec="pcm-f64be":(xe._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=c+7>>3,i=Boolean(1&u),r=Boolean(2&u),a=4&u?-1:0;c>0&&c<=64&&(i?32===c&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):a&1<0?(t.encryptionInfo.defaultCryptByteBlock=r>>4,t.encryptionInfo.defaultSkipByteBlock=15&r):(t.encryptionInfo.defaultCryptByteBlock=0,t.encryptionInfo.defaultSkipByteBlock=0),t.encryptionInfo.defaultIsProtected=0!==So(e),t.encryptionInfo.defaultPerSampleIvSize=So(e),t.encryptionInfo.defaultKid=_(To(e,16)),t.encryptionInfo.defaultIsProtected&&0===t.encryptionInfo.defaultPerSampleIvSize){const i=So(e),r=new Uint8Array(16);r.set(To(e,i),0),t.encryptionInfo.defaultConstantIv=r}}break;case"avcC":{const t=this.currentTrack;if(!t)break;if(l(t.info),0===X.contentSize)break;t.info.codecDescription=To(e,X.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;if(l(t.info),0===X.contentSize)break;t.info.codecDescription=To(e,X.contentSize)}break;case"vpcC":{const t=this.currentTrack;if(!t)break;l("video"===t.info?.type),e.skip(4);const i=So(e),r=So(e),a=So(e),s=a>>4,n=a>>1&7,o=1&a,c=So(e),u=So(e),d=So(e);t.info.vp9CodecInfo={profile:i,level:r,bitDepth:s,chromaSubsampling:n,videoFullRangeFlag:o,colourPrimaries:c,transferCharacteristics:u,matrixCoefficients:d}}break;case"av1C":{const t=this.currentTrack;if(!t)break;l("video"===t.info?.type),e.skip(1);const i=So(e),r=i>>5,a=31&i,s=So(e),n=s>>7,o=s>>6&1,c=s>>4&1,u=s>>3&1,d=s>>2&1,h=3&s,f=2===r&&o?s>>5&1?12:10:o?10:8;e.skip(1);const m=To(e,X.contentSize-4),p=wt(m);t.info.av1CodecInfo={profile:r,level:a,tier:n,bitDepth:f,monochrome:c,chromaSubsamplingX:u,chromaSubsamplingY:d,chromaSamplePosition:h,videoFullRangeFlag:p?.videoFullRangeFlag??0,colourPrimaries:p?.colourPrimaries??2,transferCharacteristics:p?.transferCharacteristics??2,matrixCoefficients:p?.matrixCoefficients??2}}break;case"colr":{const t=this.currentTrack;if(!t)break;l("video"===t.info?.type);const i=Oo(e,4);if("nclx"!==i&&"nclc"!==i)break;const r=Po(e),a=Po(e),s=Po(e);let n;"nclx"===i&&(n=Boolean(128&So(e))),t.info.colorSpace={primaries:w[r],transfer:S[a],matrix:P[s],fullRange:n}}break;case"pasp":{const t=this.currentTrack;if(!t)break;l("video"===t.info?.type);const i=Bo(e),r=Bo(e);i>0&&r>0&&(i>r?t.info.squarePixelWidth=Math.round(t.info.width*i/r):t.info.squarePixelHeight=Math.round(t.info.height*r/i))}break;case"esds":{const t=this.currentTrack;if(!t||"audio"!==t.info?.type)break;e.skip(4);l(3===So(e)),Bi(e),e.skip(2);const i=So(e),r=0!==(64&i),a=0!==(32&i);if(0!==(128&i)&&e.skip(2),r){const t=So(e);e.skip(t)}a&&e.skip(2);l(4===So(e));const s=Bi(e),n=e.filePos,o=So(e);if(64===o||103===o?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===o,objectType:null}):105===o||107===o?t.info.codec="mp3":221===o?t.info.codec="vorbis":169===o?t.info.codec="dts":xe._warn(`Unsupported audio codec (objectTypeIndication ${o}) - discarding track.`),e.skip(12),s>e.filePos-n){l(5===So(e));const i=Bi(e);if(t.info.codecDescription=To(e,i),"aac"===t.info.codec){const e=Ae(t.info.codecDescription);null!==e.outputNumberOfChannels&&(t.info.numberOfChannels=e.outputNumberOfChannels),null!==e.outputSampleRate&&(t.info.sampleRate=e.outputSampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type),t.info.pcmLittleEndian=!!(255&Po(e))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type),e.skip(4);const i=So(e);t.info.pcmLittleEndian=Boolean(1&i),t.info.pcmSampleSize=So(e)}break;case"dOps":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type),e.skip(1);const i=So(e),r=Po(e),a=Bo(e),s=xo(e),n=So(e);let o;o=0!==n?To(e,2+i):new Uint8Array(0);const c=new Uint8Array(19+o.byteLength),u=new DataView(c.buffer);u.setUint32(0,1332770163,!1),u.setUint32(4,1214603620,!1),u.setUint8(8,1),u.setUint8(9,i),u.setUint16(10,r,!0),u.setUint32(12,a,!0),u.setInt16(16,s,!0),u.setUint8(18,n),c.set(o,19),t.info.codecDescription=c,t.info.numberOfChannels=i}break;case"dfLa":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type),e.skip(4);const i=127,r=128,a=e.filePos;for(;e.filePos>>12,a=1+(i>>9&7);t.info.sampleRate=r,t.info.numberOfChannels=a,e.skip(20)}else e.skip(s);if(a&r)break}const s=e.filePos;e.filePos=a;const n=To(e,s-a),o=new Uint8Array(4+n.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(n,4),t.info.codecDescription=o}break;case"dac3":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type);const i=To(e,3),r=new _e(i),a=r.readBits(2);r.skipBits(8);const s=r.readBits(3),n=r.readBits(1);a<3&&(t.info.sampleRate=Ne[a]),t.info.numberOfChannels=Bt[s]+n}break;case"dec3":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type);const i=(e=>{if(e.length<2)return null;const t=new _e(e),i=t.readBits(13),r=t.readBits(3),a=[];for(let s=0;s<=r&&!(Math.ceil(t.pos/8)+3>e.length);s++){const e=t.readBits(2),i=t.readBits(5);t.skipBits(1),t.skipBits(1);const r=t.readBits(3),s=t.readBits(3),n=t.readBits(1);t.skipBits(3);const o=t.readBits(4);let c=0;o>0?c=t.readBits(9):t.skipBits(1),a.push({fscod:e,fscod2:null,bsid:i,bsmod:r,acmod:s,lfeon:n,numDepSub:o,chanLoc:c})}return 0===a.length?null:{dataRate:i,substreams:a}})(To(e,X.contentSize));if(!i){xe._warn("Invalid dec3 box contents, ignoring.");break}const r=At(i);null!==r&&(t.info.sampleRate=r),t.info.numberOfChannels=Dt(i)}break;case"ddts":{const t=this.currentTrack;if(!t)break;l("audio"===t.info?.type);const i=(e=>{if(e.length<20)return null;const t=g(e),i=t.getUint32(0);if(0===i)return null;const r=new _e(e);r.seekToByte(13);const a=r.readBits(2);r.skipBits(5);const s=r.readBits(1),n=r.readBits(6);r.skipBits(14),r.skipBits(1),r.skipBits(3);const o=r.readBits(16);let c=null;return 0!==o?c=Xt(o):ne.id===i);if(!r)break;const a=Bo(e),s=(12&a)>>2,n=3&a,o=[So,Po,Io,Bo],c=o[(48&a)>>4],l=o[s],u=o[n],d=Bo(e);for(let h=0;he.timestamp-t.timestamp);for(let e=0;e({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let a=0;ae.id===u);if(!d)break;const h=this.fragmentTrackDefaults.find(e=>e.trackId===u);this.currentTrack=d,d.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:h?.defaultSampleDescriptionIndex??null,defaultSampleDuration:h?.defaultSampleDuration??null,defaultSampleSize:h?.defaultSampleSize??null,defaultSampleFlags:h?.defaultSampleFlags??null,startTimestamp:null,encryptionAuxInfo:null},i?d.currentFragmentState.baseDataOffset=Fo(e):c&&(d.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),r&&(d.currentFragmentState.sampleDescriptionIndex=Bo(e)),a&&(d.currentFragmentState.defaultSampleDuration=Bo(e)),s&&(d.currentFragmentState.defaultSampleSize=Bo(e)),n&&(d.currentFragmentState.defaultSampleFlags=Bo(e)),o&&(d.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;l(t.currentFragmentState);const i=So(e);e.skip(3);const r=0===i?Bo(e):Fo(e);t.currentFragmentState.startTimestamp=r}break;case"trun":{const t=this.currentTrack;if(!t)break;l(this.currentFragment),l(t.currentFragmentState);const i=So(e),r=Io(e),a=Boolean(1&r),s=Boolean(4&r),n=Boolean(256&r),o=Boolean(512&r),c=Boolean(1024&r),u=Boolean(2048&r),d=Bo(e);let h=null;a&&(h=_o(e));let f,m=null;s&&(m=Bo(e)),this.currentFragment.trackData.has(t.id)?(f=this.currentFragment.trackData.get(t.id),null!==h&&(f.currentOffset=t.currentFragmentState.baseDataOffset+h)):(f={track:t,currentTimestamp:0,currentOffset:t.currentFragmentState.baseDataOffset+(h??0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(t.id,f));for(let p=0;p0&&(a=To(e,r));const s=Ji(t);s.defaultSampleInfoSize=i,s.sampleSizes=a,s.sampleCount=r}break;case"saio":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=So(e);if(1&Io(e)){const i=Oo(e,4),r=Bo(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const r=Bo(e);if(0===r)break;r>1&&xe._warn("Multiple saio entries are not supported; using the first offset only.");let a=0===i?Bo(e):Number(Fo(e));this.currentFragment&&(a+=this.currentFragment.moofOffset);Ji(t).offset=a}break;case"senc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;l(this.currentFragment);const i=this.currentFragment.trackData.get(t.id);if(!i)break;e.skip(1);const r=Io(e),a=Boolean(2&r),s=Bo(e),n=t.encryptionInfo.defaultPerSampleIvSize;l(null!==n);for(let o=0;o0?r.set(To(e,n),0):r.set(t.encryptionInfo.defaultConstantIv,0);let s=null;if(a){const t=Po(e);s=[];for(let i=0;i0&&((L=this.metadataTags).trackNumber??(L.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((z=this.metadataTags).tracksTotal??(z.tracksTotal=i))}break;case"trkn":if(a instanceof Uint8Array&&a.length>=6){const e=g(a),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&((U=this.metadataTags).trackNumber??(U.trackNumber=t)),i>0&&((q=this.metadataTags).tracksTotal??(q.tracksTotal=i))}break;case"disc":case"disk":if(a instanceof Uint8Array&&a.length>=6){const e=g(a),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&((W=this.metadataTags).discNumber??(W.discNumber=t)),i>0&&((H=this.metadataTags).discsTotal??(H.discsTotal=i))}}}}}return e.filePos=G,!0}}class Wi{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.tracks)if(r.trackBacking.getType()===t&&i++,r===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){const e=this.internalTrack;if(e.durationInMediaTimescale<=0)return null;l(e.trackBacking);const t=await e.trackBacking.getFirstPacket({metadataOnly:!0});return(t?.timestamp??0)+e.durationInMediaTimescale/e.timescale}async getLiveRefreshInterval(){return null}async getFirstPacket(e){const t=await this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)}mapTimestampIntoTimescale(e){return j(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}async getPacket(e,t){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=ji(r,i),s=await this.fetchPacketForSampleIndex(a,t);return Yi(r)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=A(t.presentationTimestamps,i,e=>e.presentationTimestamp);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=L(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=i);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>r.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.samples.findIndex(e=>e.isKeyFrame);return l(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)}async fetchPacketForSampleIndex(e,t){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=Xi(i,e);if(!r)return null;let a;if(t.metadataOnly)a=Ti;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.sampleOffset,r.sampleSize);if(de(t)&&(t=await t),!t)return null;if(a=To(t,r.sampleSize),this.internalTrack.encryptionInfo){let t=null;if(this.internalTrack.encryptionAuxInfo){const i=await Zi(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);ee.timestamp),d=-1!==u?this.internalTrack.fragmentLookupTable[u]:null,h=A(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),f=-1!==h?this.internalTrack.fragmentPositionCache[h]:null,m=Math.max(d?.moofOffset??0,f?.moofOffset??0)||null;let p;for(e?null===m||e.moofOffset>=m?(p=e.moofOffset+e.moofSize,n=e):p=m:p=m??0;;){if(n){const e=n.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=s.reader.requestSliceRange(p,8,16);if(de(e)&&(e=await e),!e)break;const i=p,l=Ii(e);if(!l)break;if("moof"===l.name){n=await s.readFragment(i);const{sampleIndex:e,correctSampleFound:r}=t(n);if(r)return this.fetchPacketInFragment(n,e,a);-1!==e&&(o=n,c=e)}p=i+l.totalSize}if(d&&(!o||o.moofOffset{var e,t,i,r,a;if("avc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("hevc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo&&(2!==(a=this.internalTrack.info.vp9CodecInfo).colourPrimaries||2!==a.transferCharacteristics||2!==a.matrixCoefficients))if("av1"!==this.internalTrack.info.codec||this.internalTrack.info.av1CodecInfo&&(e=>2!==e.colourPrimaries||2!==e.transferCharacteristics||2!==e.matrixCoefficients)(this.internalTrack.info.av1CodecInfo)){if("prores"===this.internalTrack.info.codec&&!this.internalTrack.info.proresCodecInfo){const e=await this.getFirstPacket({});this.internalTrack.info.proresCodecInfo=e&&Tt(e.data)}}else{const e=await this.getFirstPacket({}),t=e&&wt(e.data);t&&(this.internalTrack.info.av1CodecInfo=t)}else{const e=await this.getFirstPacket({}),t=e&&yt(e.data);t&&(this.internalTrack.info.vp9CodecInfo={...this.internalTrack.info.vp9CodecInfo??t,videoFullRangeFlag:t.videoFullRangeFlag,colourPrimaries:t.colourPrimaries,transferCharacteristics:t.transferCharacteristics,matrixCoefficients:t.matrixCoefficients})}else{const e=await this.getFirstPacket({});this.internalTrack.info.hevcCodecInfo=e&&nt(e.data)}else{const e=await this.getFirstPacket({});this.internalTrack.info.avcCodecInfo=e&&Qe(e.data)}if(!I(this.internalTrack.info.colorSpace)){const a=ai(this.internalTrack.info);(e=this.internalTrack.info.colorSpace).primaries??(e.primaries=a.primaries),(t=this.internalTrack.info.colorSpace).transfer??(t.transfer=a.transfer),(i=this.internalTrack.info.colorSpace).matrix??(i.matrix=a.matrix),(r=this.internalTrack.info.colorSpace).fullRange??(r.fullRange=a.fullRange)}const s={codec:ri(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(s.displayAspectWidth=this.internalTrack.info.squarePixelWidth,s.displayAspectHeight=this.internalTrack.info.squarePixelHeight),s})()):null}}class Vi extends Wi{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=await this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&Vt(e.data)}return{codec:si(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}})()):null}}const ji=(e,t)=>{if(e.presentationTimestamps){const i=A(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===i?-1:e.presentationTimestamps[i].sampleIndex}{const i=A(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===i)return-1;const r=e.sampleTimingEntries[i];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},Ki=(e,t)=>{if(!e.keySampleIndices)return ji(e,t);if(e.presentationTimestamps){const i=A(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===i)return-1;for(let t=i;t>=0;t--){const i=e.presentationTimestamps[t].sampleIndex;if(-1!==F(e.keySampleIndices,i,e=>e))return i}return-1}{const i=ji(e,t),r=A(e.keySampleIndices,i,e=>e);return e.keySampleIndices[r]??-1}},Xi=(e,t)=>{const i=A(e.sampleTimingEntries,t,e=>e.startIndex),r=e.sampleTimingEntries[i];if(!r||r.startIndex+r.count<=t)return null;let a=r.startDecodeTimestamp+(t-r.startIndex)*r.delta;const s=A(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),n=e.sampleCompositionTimeOffsets[s];n&&t-n.startIndexe.startSampleIndex),u=e.sampleToChunk[c];l(u);const d=u.startChunkIndex+Math.floor((t-u.startSampleIndex)/u.samplesPerChunk),h=e.chunkOffsets[d],f=u.startSampleIndex+(d-u.startChunkIndex)*u.samplesPerChunk;let m=0,p=h;if(1===e.sampleSizes.length)p+=o*(t-f),m+=o*u.samplesPerChunk;else for(let l=f;le)}},$i=(e,t)=>{if(!e.keySampleIndices)return t+1;const i=A(e.keySampleIndices,t,e=>e);return e.keySampleIndices[i+1]??-1},Gi=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const i of e.samples)i.presentationTimestamp+=t;for(const i of e.presentationTimestamps)i.presentationTimestamp+=t},Qi=e=>{const[t,i]=e,r=Math.atan2(i,t);return Number.isFinite(r)?r*(180/Math.PI):0},Yi=e=>0===e.sampleSizes.length,Ji=e=>{var t;return e.currentFragmentState?(t=e.currentFragmentState).encryptionAuxInfo??(t.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}):e.encryptionAuxInfo??(e.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null})},Zi=async(e,t,i)=>{if(i.resolved)return i.resolved;if(null===i.offset||0===i.sampleCount)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(i.defaultSampleInfoSize>0)r=i.defaultSampleInfoSize*i.sampleCount;else{l(i.sampleSizes);for(let e=0;e0?i.defaultSampleInfoSize:i.sampleSizes[o],r=new Uint8Array(16);s>0?r.set(To(a,s),0):r.set(t.defaultConstantIv,0);let c=null;if(e>s){const e=Po(a);c=[];for(let t=0;te.defaultConstantIv?{iv:e.defaultConstantIv,subsamples:null}:null,tr=async(e,t,i,r)=>{l(e.encryptionInfo);const a=e.encryptionInfo;l(null!==a.defaultKid);const s=a.defaultKid;let n;const o=e.demuxer.decryptionKeyCache.get(s);if(o)n=await o;else{if(!e.demuxer.input._formatOptions.isobmff?.resolveKeyId)throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");const t=(async()=>{let t=e.demuxer.psshBoxes;if(r){t=[...t,...r.psshBoxes].filter(e=>null===e.keyIds||e.keyIds.includes(s));for(let e=0;e{l(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;i{const a=new Uint8Array(16);a.set(i.iv,0);const s=await crypto.subtle.importKey("raw",e,{name:"AES-CTR"},!1,["decrypt"]),n=async e=>{const t=await crypto.subtle.decrypt({name:"AES-CTR",counter:a,length:64},s,e);return new Uint8Array(t)};if(!i.subsamples)return n(r);l(null!==t.defaultCryptByteBlock&&null!==t.defaultSkipByteBlock);const o=ar(i.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock);let c=0;for(const l of o)for(const e of l.perSubsample)c+=e.length;const u=new Uint8Array(c);let d=0;for(const l of o)for(const e of l.perSubsample)u.set(r.subarray(e.offset,e.offset+e.length),d),d+=e.length;const h=await n(u),f=new Uint8Array(r);let m=0;for(const l of o)for(const e of l.perSubsample)f.set(h.subarray(m,m+e.length),e.offset),m+=e.length;return f},rr=(e,t,i,r)=>{const a=new Ui;a.init({key:e,iv:i.iv});const s=t.defaultCryptByteBlock,n=t.defaultSkipByteBlock;if(l(null!==s&&null!==n),!i.subsamples){const e=new Uint8Array(r),t=Math.floor(r.length/16);for(let i=0;i{const r=[],a=0!==t||0!==i;let s=0;for(const n of e){s+=n.clearLen;const e=[];if(a){let r=n.protectedLen,a=s;for(;r>0&&!(r<16*t);){const s=16*t;e.push({offset:a,length:s}),a+=s,r-=s;const n=Math.min(16*i,r);a+=n,r-=n}s+=n.protectedLen}else n.protectedLen>0&&e.push({offset:s,length:n.protectedLen}),s+=n.protectedLen;r.push({perSubsample:e})}return r};var sr,nr;(nr=sr||(sr={}))[nr.EBML=440786851]="EBML",nr[nr.EBMLVersion=17030]="EBMLVersion",nr[nr.EBMLReadVersion=17143]="EBMLReadVersion",nr[nr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",nr[nr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",nr[nr.DocType=17026]="DocType",nr[nr.DocTypeVersion=17031]="DocTypeVersion",nr[nr.DocTypeReadVersion=17029]="DocTypeReadVersion",nr[nr.Void=236]="Void",nr[nr.Segment=408125543]="Segment",nr[nr.SeekHead=290298740]="SeekHead",nr[nr.Seek=19899]="Seek",nr[nr.SeekID=21419]="SeekID",nr[nr.SeekPosition=21420]="SeekPosition",nr[nr.Duration=17545]="Duration",nr[nr.Info=357149030]="Info",nr[nr.TimestampScale=2807729]="TimestampScale",nr[nr.MuxingApp=19840]="MuxingApp",nr[nr.WritingApp=22337]="WritingApp",nr[nr.Tracks=374648427]="Tracks",nr[nr.TrackEntry=174]="TrackEntry",nr[nr.TrackNumber=215]="TrackNumber",nr[nr.TrackUID=29637]="TrackUID",nr[nr.TrackType=131]="TrackType",nr[nr.FlagEnabled=185]="FlagEnabled",nr[nr.FlagDefault=136]="FlagDefault",nr[nr.FlagForced=21930]="FlagForced",nr[nr.FlagOriginal=21934]="FlagOriginal",nr[nr.FlagHearingImpaired=21931]="FlagHearingImpaired",nr[nr.FlagVisualImpaired=21932]="FlagVisualImpaired",nr[nr.FlagCommentary=21935]="FlagCommentary",nr[nr.FlagLacing=156]="FlagLacing",nr[nr.Name=21358]="Name",nr[nr.Language=2274716]="Language",nr[nr.LanguageBCP47=2274717]="LanguageBCP47",nr[nr.CodecID=134]="CodecID",nr[nr.CodecPrivate=25506]="CodecPrivate",nr[nr.CodecDelay=22186]="CodecDelay",nr[nr.SeekPreRoll=22203]="SeekPreRoll",nr[nr.DefaultDuration=2352003]="DefaultDuration",nr[nr.Video=224]="Video",nr[nr.PixelWidth=176]="PixelWidth",nr[nr.PixelHeight=186]="PixelHeight",nr[nr.DisplayWidth=21680]="DisplayWidth",nr[nr.DisplayHeight=21690]="DisplayHeight",nr[nr.DisplayUnit=21682]="DisplayUnit",nr[nr.AlphaMode=21440]="AlphaMode",nr[nr.Audio=225]="Audio",nr[nr.SamplingFrequency=181]="SamplingFrequency",nr[nr.Channels=159]="Channels",nr[nr.BitDepth=25188]="BitDepth",nr[nr.SimpleBlock=163]="SimpleBlock",nr[nr.BlockGroup=160]="BlockGroup",nr[nr.Block=161]="Block",nr[nr.BlockAdditions=30113]="BlockAdditions",nr[nr.BlockMore=166]="BlockMore",nr[nr.BlockAdditional=165]="BlockAdditional",nr[nr.BlockAddID=238]="BlockAddID",nr[nr.BlockDuration=155]="BlockDuration",nr[nr.ReferenceBlock=251]="ReferenceBlock",nr[nr.Cluster=524531317]="Cluster",nr[nr.Timestamp=231]="Timestamp",nr[nr.Cues=475249515]="Cues",nr[nr.CuePoint=187]="CuePoint",nr[nr.CueTime=179]="CueTime",nr[nr.CueTrackPositions=183]="CueTrackPositions",nr[nr.CueTrack=247]="CueTrack",nr[nr.CueClusterPosition=241]="CueClusterPosition",nr[nr.Colour=21936]="Colour",nr[nr.MatrixCoefficients=21937]="MatrixCoefficients",nr[nr.TransferCharacteristics=21946]="TransferCharacteristics",nr[nr.Primaries=21947]="Primaries",nr[nr.Range=21945]="Range",nr[nr.Projection=30320]="Projection",nr[nr.ProjectionType=30321]="ProjectionType",nr[nr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",nr[nr.Attachments=423732329]="Attachments",nr[nr.AttachedFile=24999]="AttachedFile",nr[nr.FileDescription=18046]="FileDescription",nr[nr.FileName=18030]="FileName",nr[nr.FileMediaType=18016]="FileMediaType",nr[nr.FileData=18012]="FileData",nr[nr.FileUID=18094]="FileUID",nr[nr.Chapters=272869232]="Chapters",nr[nr.Tags=307544935]="Tags",nr[nr.Tag=29555]="Tag",nr[nr.Targets=25536]="Targets",nr[nr.TargetTypeValue=26826]="TargetTypeValue",nr[nr.TargetType=25546]="TargetType",nr[nr.TagTrackUID=25541]="TagTrackUID",nr[nr.TagEditionUID=25545]="TagEditionUID",nr[nr.TagChapterUID=25540]="TagChapterUID",nr[nr.TagAttachmentUID=25542]="TagAttachmentUID",nr[nr.SimpleTag=26568]="SimpleTag",nr[nr.TagName=17827]="TagName",nr[nr.TagLanguage=17530]="TagLanguage",nr[nr.TagString=17543]="TagString",nr[nr.TagBinary=17541]="TagBinary",nr[nr.ContentEncodings=28032]="ContentEncodings",nr[nr.ContentEncoding=25152]="ContentEncoding",nr[nr.ContentEncodingOrder=20529]="ContentEncodingOrder",nr[nr.ContentEncodingScope=20530]="ContentEncodingScope",nr[nr.ContentCompression=20532]="ContentCompression",nr[nr.ContentCompAlgo=16980]="ContentCompAlgo",nr[nr.ContentCompSettings=16981]="ContentCompSettings",nr[nr.ContentEncryption=20533]="ContentEncryption";const or=[sr.EBML,sr.Segment],cr=[sr.SeekHead,sr.Info,sr.Cluster,sr.Tracks,sr.Cues,sr.Attachments,sr.Chapters,sr.Tags],lr=[...or,...cr],ur=16,dr=e=>{if(e.remainingLength<1)return null;const t=So(e);if(e.skip(-1),0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;return e.remainingLength{if(e.remainingLength<1)return null;const t=So(e);if(0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;if(e.remainingLength{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r{const t=dr(e);if(null===t)return null;if(e.remainingLength{if(e.remainingLength<1)return null;if(255===So(e))return;e.skip(-1);const t=hr(e);return null===t?null:72057594037927940!==t?t:void 0},gr=e=>{l(e.remainingLength>=2);const t=mr(e);if(null===t)return null;const i=pr(e);return null===i?null:{id:t,size:i}},kr=(e,t)=>{const i=To(e,t);let r=0;for(;r{const i=To(e,t);let r=0;for(;r{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?Mo(e):No(e)},wr=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;null===r||ss?r:s,found:!1}},Tr=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;se.tracks.map(e=>e.trackBacking))}async getMimeType(){await this.readMetadata();const e=await this.getTrackBackings(),t=await Promise.all(e.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>"video"===e.info?.type)),hasAudio:this.segments.some(e=>e.tracks.some(e=>"audio"===e.info?.type)),codecStrings:t.filter(Boolean)})}async getMetadataTags(){await this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&await this.loadSegmentMetadata(t),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e={...e,...t.metadataTags};return e}readMetadata(){return this.readMetadataPromise??(this.readMetadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,ur);if(de(t)&&(t=await t),!t)break;const i=gr(t);if(!i)break;const r=i.id;let a=i.size;const s=t.filePos;if(r===sr.EBML){Nr(a);let e=this.reader.requestSlice(s,a);if(de(e)&&(e=await e),!e)break;this.readContiguousElements(e)}else if(r===sr.Segment){if(await this.readSegment(s,a),void 0===a)break;if(null===this.reader.fileSize)break}else if(r===sr.Cluster){if(null===this.reader.fileSize)break;if(void 0===a){a=(await wr(this.reader,s,lr,this.reader.fileSize)).pos-s}const e=d(this.segments);e&&(e.elementEndPos=s+a)}Nr(a),e=s+a}})())}async readSegment(e,t){this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let i=e;for(;null===this.currentSegment.elementEndPos||ie.id===a);if(-1!==o){const e=Hr[o].flag;this.currentSegment[e]=!0,Nr(s);let t=this.reader.requestSlice(n,s);de(t)&&(t=await t),t&&this.readContiguousElements(t)}else if(a===sr.Tags||a===sr.Attachments){a===sr.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,Nr(s);let e=this.reader.requestSlice(n,s);de(e)&&(e=await e),e&&this.readContiguousElements(e)}else if(a===sr.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===s)break;i=n+s}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const n of this.currentSegment.seekEntries){const t=Hr.find(e=>e.id===n.id);if(!t)continue;if(this.currentSegment[t.flag])continue;let i=this.reader.requestSliceRange(e+n.segmentPosition,2,ur);if(de(i)&&(i=await i),!i)continue;const r=gr(i);if(!r)continue;const{id:a,size:s}=r;if(a!==t.id)continue;Nr(s),this.currentSegment[t.flag]=!0;let o=this.reader.requestSlice(i.filePos,s);de(o)&&(o=await o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const n of this.currentSegment.tracks)null!==n.defaultDurationNs&&(n.defaultDuration=this.currentSegment.timestampFactor*n.defaultDurationNs/1e9);const r=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const n of this.currentSegment.cuePoints){const e=r.get(n.trackId);e&&e.cuePoints.push(n)}for(const n of this.currentSegment.tracks){n.cuePoints.sort((e,t)=>e.time-t.time);for(let e=0;es&&(s=n.cuePoints.length,a=n);for(const n of this.currentSegment.tracks)0===n.cuePoints.length&&(n.cuePoints=a.cuePoints);this.currentSegment=null}async readCluster(e,t){if(t.lastReadCluster?.elementStartPos===e)return t.lastReadCluster;let i=this.reader.requestSliceRange(e,2,ur);de(i)&&(i=await i),l(i);const r=e,a=gr(i);l(a);l(a.id===sr.Cluster);let s=a.size;const n=i.filePos;if(void 0===s){s=(await wr(this.reader,n,lr,t.elementEndPos)).pos-n}let o=this.reader.requestSlice(n,s);de(o)&&(o=await o);const c={segment:t,elementStartPos:r,elementEndPos:n+s,dataStartPos:n,timestamp:-1,trackData:new Map};if(this.currentCluster=c,o){const e=this.readContiguousElements(o,lr);c.elementEndPos=e}for(const[,u]of c.trackData){const e=u.track;l(u.blocks.length>0);let t=!1;for(let r=0;r({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let r=0;r({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const i=u.blocks[u.presentationTimestamps[0].blockIndex],a=u.blocks[d(u.presentationTimestamps).blockIndex];u.startTimestamp=i.timestamp,u.endTimestamp=a.timestamp+a.duration;const s=A(e.clusterPositionCache,u.startTimestamp,e=>e.startTimestamp);-1!==s&&e.clusterPositionCache[s].elementStartPos===r||e.clusterPositionCache.splice(s+1,0,{elementStartPos:c.elementStartPos,startTimestamp:u.startTimestamp})}return t.lastReadCluster=c,c}getTrackDataInCluster(e,t){let i=e.trackData.get(t);if(!i){const r=e.segment.tracks.find(e=>e.id===t);if(!r)return null;i={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,i)}return i}expandLacedBlocks(e,t){for(let i=0;i=2;){const i=e.filePos;if(!this.traverseElement(e,t))return i}return e.filePos}traverseElement(e,t){const i=gr(e);if(!i)return!1;if(t&&t.includes(i.id))return!1;const{id:r,size:a}=i,s=e.filePos;switch(Nr(a),r){case sr.DocType:this.isWebM="webm"===kr(e,a);break;case sr.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(s,a)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case sr.SeekID:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=fr(e,a)}break;case sr.SeekPosition:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=fr(e,a)}break;case sr.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=fr(e,a),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case sr.Duration:if(!this.currentSegment)break;this.currentSegment.duration=br(e,a);break;case sr.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:{...Ee,primary:!1},trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(s,a)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>"decompress"!==e.data?.type||e.scope!==zr.Block||e.data.algorithm!==qr.HeaderStripping)&&(xe._warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,null!==this.currentTrack.info.displayWidth&&null!==this.currentTrack.info.displayHeight){const e=this.currentTrack.info.displayWidth*this.currentTrack.info.height,t=this.currentTrack.info.displayHeight*this.currentTrack.info.width;e>0&&t>0&&(e>t?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*e/t):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*t/e))}if(this.currentTrack.codecId===Sr)this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(this.currentTrack.codecId===vr)this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(t===Pr)this.currentTrack.info.codec="vp8";else if(t===Ir)this.currentTrack.info.codec="vp9";else if(t===xr)this.currentTrack.info.codec="av1";else if(t===Cr){const e=this.currentTrack.codecPrivate?k.decode(this.currentTrack.codecPrivate):"";ti.includes(e)&&(this.currentTrack.info.codec="prores",this.currentTrack.info.proresFormat=e)}const e=this.currentTrack;this.currentTrack.trackBacking=new Xr(e),this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type){t===Br?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Er?this.currentTrack.info.codec="mp3":t===_r?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=ni):t===Rr?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Fr?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Ar?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Dr?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Mr?(this.currentTrack.info.codec="dts","A_DTS/EXPRESS"===this.currentTrack.codecId?this.currentTrack.info.dtsFormat="dtse":"A_DTS/LOSSLESS"===this.currentTrack.codecId&&(this.currentTrack.info.dtsFormat="dtsl")):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack;this.currentTrack.trackBacking=new $r(e),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case sr.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=fr(e,a);break;case sr.TrackType:{if(!this.currentTrack)break;const t=fr(e,a);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:{...x},alphaMode:!1,proresFormat:null}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null})}break;case sr.FlagEnabled:if(!this.currentTrack)break;fr(e,a)||(this.currentTrack=null);break;case sr.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!fr(e,a);break;case sr.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!fr(e,a);break;case sr.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!fr(e,a);break;case sr.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!fr(e,a);break;case sr.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!fr(e,a);break;case sr.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!fr(e,a);break;case sr.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=kr(e,a);break;case sr.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=To(e,a);break;case sr.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=fr(e,a);break;case sr.Name:if(!this.currentTrack)break;this.currentTrack.name=yr(e,a);break;case sr.Language:if(!this.currentTrack)break;if(this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=kr(e,a),Y(this.currentTrack.languageCode)||(this.currentTrack.languageCode=V);break;case sr.LanguageBCP47:{if(!this.currentTrack)break;const t=kr(e,a).split("-")[0];this.currentTrack.languageCode=t||V,this.currentTrack.hasLanguageBcp47=!0}break;case sr.Video:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case sr.PixelWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.width=fr(e,a);break;case sr.PixelHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.height=fr(e,a);break;case sr.DisplayWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayWidth=fr(e,a);break;case sr.DisplayHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayHeight=fr(e,a);break;case sr.DisplayUnit:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayUnit=fr(e,a);break;case sr.AlphaMode:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.alphaMode=1===fr(e,a);break;case sr.Colour:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case sr.MatrixCoefficients:{if("video"!==this.currentTrack?.info?.type)break;const t=fr(e,a),i=P[t];this.currentTrack.info.colorSpace.matrix=i}break;case sr.Range:{if("video"!==this.currentTrack?.info?.type)break;const t=fr(e,a);this.currentTrack.info.colorSpace.fullRange=1===t||2===t?2===t:void 0}break;case sr.TransferCharacteristics:{if("video"!==this.currentTrack?.info?.type)break;const t=fr(e,a),i=S[t];this.currentTrack.info.colorSpace.transfer=i}break;case sr.Primaries:{if("video"!==this.currentTrack?.info?.type)break;const t=fr(e,a),i=w[t];this.currentTrack.info.colorSpace.primaries=i}break;case sr.Projection:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case sr.ProjectionPoseRoll:{if("video"!==this.currentTrack?.info?.type)break;const t=-br(e,a);try{this.currentTrack.info.rotation=u(t)}catch{}}break;case sr.Audio:if("audio"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case sr.SamplingFrequency:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.sampleRate=br(e,a);break;case sr.Channels:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.numberOfChannels=fr(e,a);break;case sr.BitDepth:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.bitDepth=fr(e,a);break;case sr.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(s,a)),this.currentCueTime=null;break;case sr.CueTime:this.currentCueTime=fr(e,a);break;case sr.CueTrackPositions:{if(null===this.currentCueTime)break;l(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(s,a)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case sr.CueTrack:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=fr(e,a)}break;case sr.CueClusterPosition:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;l(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+fr(e,a)}break;case sr.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=fr(e,a);break;case sr.SimpleBlock:{if(!this.currentCluster)break;const t=hr(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=xo(e),n=So(e),o=n>>1&3;let c=!!(128&n);"audio"===i.track.info?.type&&i.track.info.codec&&(c=!0);const l=To(e,a-(e.filePos-s)),u=i.track.decodingInstructions.length>0;i.blocks.push({timestamp:r,duration:0,isKeyFrame:c,data:l,lacing:o,decoded:!u,postProcessed:!1,mainAdditional:null})}break;case sr.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(s,a)),this.currentBlock=null;break;case sr.Block:{if(!this.currentCluster)break;const t=hr(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=xo(e),n=So(e)>>1&3,o=To(e,a-(e.filePos-s)),c=i.track.decodingInstructions.length>0;this.currentBlock={timestamp:r,duration:0,isKeyFrame:!0,data:o,lacing:n,decoded:!c,postProcessed:!1,mainAdditional:null},i.blocks.push(this.currentBlock)}break;case sr.BlockAdditions:this.readContiguousElements(e.slice(s,a));break;case sr.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(s,a)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case sr.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=To(e,a);break;case sr.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=fr(e,a);break;case sr.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=fr(e,a);break;case sr.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case sr.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(s,a));break;case sr.Targets:this.readContiguousElements(e.slice(s,a));break;case sr.TargetTypeValue:50!==fr(e,a)&&(this.currentTagTargetIsMovie=!1);break;case sr.TagTrackUID:case sr.TagEditionUID:case sr.TagChapterUID:case sr.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case sr.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(s,a));break;case sr.TagName:this.currentSimpleTagName=yr(e,a);break;case sr.TagString:{if(!this.currentSimpleTagName)break;const t=yr(e,a);this.processTagValue(this.currentSimpleTagName,t)}break;case sr.TagBinary:{if(!this.currentSimpleTagName)break;const t=To(e,a);this.processTagValue(this.currentSimpleTagName,t)}break;case sr.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(s,a));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(t.raw??(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new Be(this.currentAttachedFile.fileData,this.currentAttachedFile.fileMediaType??void 0,this.currentAttachedFile.fileName??void 0,this.currentAttachedFile.fileDescription??void 0)),this.currentAttachedFile.fileMediaType?.startsWith("image/")&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let i="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?i="coverFront":t.startsWith("back.")&&(i="coverBack")}t.images??(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:i,name:this.currentAttachedFile.fileName??void 0,description:this.currentAttachedFile.fileDescription??void 0})}this.currentAttachedFile=null}break;case sr.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let i=0n;for(let r=0;rt.order-e.order);break;case sr.ContentEncoding:this.currentDecodingInstruction={order:0,scope:zr.Block,data:null},this.readContiguousElements(e.slice(s,a)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case sr.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=fr(e,a);break;case sr.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=fr(e,a);break;case sr.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:qr.Zlib,settings:null},this.readContiguousElements(e.slice(s,a));break;case sr.ContentCompAlgo:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.algorithm=fr(e,a);break;case sr.ContentCompSettings:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.settings=To(e,a);break;case sr.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=s+a,!0}decodeBlockData(e,t){l(e.decodingInstructions.length>0);let i=t;for(const r of e.decodingInstructions)if(l(r.data),"decompress"===r.data.type)if(r.data.algorithm===qr.HeaderStripping)if(r.data.settings&&r.data.settings.length>0){const e=r.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var i;if(!this.currentSegment?.metadataTags)return;const r=this.currentSegment.metadataTags;if(r.raw??(r.raw={}),(i=r.raw)[e]??(i[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":r.title??(r.title=t);break;case"description":r.description??(r.description=t);break;case"artist":r.artist??(r.artist=t);break;case"album":r.album??(r.album=t);break;case"album_artist":r.albumArtist??(r.albumArtist=t);break;case"genre":r.genre??(r.genre=t);break;case"comment":r.comment??(r.comment=t);break;case"lyrics":r.lyrics??(r.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||(r.date??(r.date=e))}break;case"track_number":case"part_number":{const e=t.split("/"),i=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(r.trackNumber??(r.trackNumber=i)),a&&Number.isInteger(a)&&a>0&&(r.tracksTotal??(r.tracksTotal=a))}break;case"disc_number":case"disc":{const e=t.split("/"),i=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(r.discNumber??(r.discNumber=i)),a&&Number.isInteger(a)&&a>0&&(r.discsTotal??(r.discsTotal=a))}}}async getDurationFromMetadata(e){if(e.duration<=0)return null;let t=null;for(const r of e.tracks){l(r.trackBacking);const e=await r.trackBacking.getFirstPacket({metadataOnly:!0});e&&(t=Math.min(t??1/0,e.timestamp))}let i=e.duration/e.timestampFactor;return i+=t??0,i}}class Kr{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.segments)for(const e of r.tracks)if(e.trackBacking.getType()===t&&i++,e===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return this.internalTrack.demuxer.getDurationFromMetadata(this.internalTrack.segment)}async getLiveRefreshInterval(){return null}async getFirstPacket(e){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)}intoTimescale(e){return j(e*this.internalTrack.segment.timestampFactor)}async getPacket(e,t){const i=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=A(t.presentationTimestamps,i,e=>e.timestamp);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=L(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=i);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.blocks.findIndex(e=>e.isKeyFrame);return l(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)}async fetchPacketInCluster(e,t,i){if(-1===t)return null;const r=e.trackData.get(this.internalTrack.id).blocks[t];if(l(r),r.decoded||(r.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,r.data),r.decoded=!0),!r.postProcessed){if("prores"===this.internalTrack.info?.codec){if(!(r.data.length>=8&&105===r.data[4]&&99===r.data[5]&&112===r.data[6]&&102===r.data[7])){const e=new Uint8Array(r.data.length+8);g(e).setUint32(0,e.length,!1),e[4]=105,e[5]=99,e[6]=112,e[7]=102,e.set(r.data,8),r.data=e}}r.postProcessed=!0}const a=i.metadataOnly?Ti:r.data,s=r.timestamp/this.internalTrack.segment.timestampFactor,n=r.duration/this.internalTrack.segment.timestampFactor,o={};r.mainAdditional&&"video"===this.internalTrack.info?.type&&this.internalTrack.info.alphaMode&&(o.alpha=i.metadataOnly?Ti:r.mainAdditional,o.alphaByteLength=r.mainAdditional.byteLength);const c=new Si(a,r.isKeyFrame?"key":"delta",s,n,e.dataStartPos+t,r.data.byteLength,o);return this.packetToClusterLocation.set(c,{cluster:e,blockIndex:t}),c}async performClusterLookup(e,t,i,r,a){const{demuxer:s,segment:n}=this.internalTrack;let o=null,c=null,u=-1;if(e){const{blockIndex:i,correctBlockFound:r}=t(e);if(r)return this.fetchPacketInCluster(e,i,a);-1!==i&&(c=e,u=i)}const d=A(this.internalTrack.cuePoints,i,e=>e.time),h=-1!==d?this.internalTrack.cuePoints[d]:null,f=A(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),m=-1!==f?this.internalTrack.clusterPositionCache[f]:null,p=Math.max(h?.clusterPosition??0,m?.elementStartPos??0)||null;let g;for(e?null===p||e.elementStartPos>=p?(g=e.elementEndPos,o=e):g=p:g=p??n.clusterSeekStartPos;null===n.elementEndPos||g<=n.elementEndPos-2;){if(o){const e=o.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=s.reader.requestSliceRange(g,2,ur);if(de(e)&&(e=await e),!e)break;const i=g,d=gr(e);if(!d||!cr.includes(d.id)&&d.id!==sr.Void){const e=await Tr(s.reader,i,cr,Math.min(n.elementEndPos??1/0,i+Vr));if(e){g=e;continue}break}const h=d.id;let f=d.size;const m=e.filePos;if(h===sr.Cluster){o=await s.readCluster(i,n),f=o.elementEndPos-m;const{blockIndex:e,correctBlockFound:r}=t(o);if(r)return this.fetchPacketInCluster(o,e,a);-1!==e&&(c=o,u=e)}if(void 0===f){l(h!==sr.Cluster);f=(await wr(s.reader,m,lr,n.elementEndPos)).pos-m}const p=m+f;if(null===n.elementEndPos){let e=s.reader.requestSliceRange(p,2,ur);if(de(e)&&(e=await e),!e)break;if(mr(e)===sr.Segment){n.elementEndPos=p;break}}g=p}if(h&&(!c||c.elementStartPos{var e,t,i,r;let a=null;("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"prores"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(a=await this.getFirstPacket({}));const s={width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&a?Qe(a.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&a?nt(a.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&a?yt(a.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&a?wt(a.data):null,proresCodecInfo:"prores"===this.internalTrack.info.codec&&a?Tt(a.data):null,proresFormat:this.internalTrack.info.proresFormat};if(!I(this.internalTrack.info.colorSpace)){const a=ai(s);(e=this.internalTrack.info.colorSpace).primaries??(e.primaries=a.primaries),(t=this.internalTrack.info.colorSpace).transfer??(t.transfer=a.transfer),(i=this.internalTrack.info.colorSpace).matrix??(i.matrix=a.matrix),(r=this.internalTrack.info.colorSpace).fullRange??(r.fullRange=a.fullRange)}const n={codec:ri(s),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(n.displayAspectWidth=this.internalTrack.info.squarePixelWidth,n.displayAspectHeight=this.internalTrack.info.squarePixelHeight),n})()):null}}class $r extends Kr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=await this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&Vt(e.data)}return{codec:si({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo,dtsFormat:this.internalTrack.info.dtsFormat}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}})()):null}}const Gr=async(e,t,i,r=null)=>{let a=t;for(;null===i||a=4;){const t=s.filePos,i=Bo(s),n=null!==e.fileSize?e.fileSize-a:null,o=pi(i,n);if(o.header&&(!r||o.header.sampleRate===r.sampleRate&&o.header.mpegVersionId===r.mpegVersionId&&o.header.layer===r.layer&&bi(o.header.channel)===bi(r.channel)))return{header:o.header,startPos:a};s.filePos=t+o.bytesAdvanced,a=s.filePos}}return null};class Qr extends wi{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.firstFrameHeaderPos=null,this.xingFrameHeader=null,this.xingFrameHeaderPos=null,this.loadedSamples=[],this.metadataTags=null,this.xingData=null,this.trackBackings=[],this.readingMutex=new B,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();if(!this.firstFrameHeader&&this.xingFrameHeader&&(this.firstFrameHeader=this.xingFrameHeader,this.firstFrameHeaderPos=this.xingFrameHeaderPos),!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.trackBackings=[new Yr(this)]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,Vo);if(de(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=$o(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=await Gr(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const i=mi(t.mpegVersionId,t.channel);let r=this.reader.requestSlice(e.startPos+i,4);if(de(r)&&(r=await r),r){const a=Bo(r);if(a===hi||a===fi){if(this.xingFrameHeader||(this.xingFrameHeader=t,this.xingFrameHeaderPos=e.startPos),!this.xingData){let t=this.reader.requestSlice(e.startPos+i+4,12);if(de(t)&&(t=await t),t){const e=To(t,12),i=g(e),r=i.getUint32(0,!1);this.xingData={frameCount:r&ki.FrameCount?i.getUint32(4,!1):null,fileSize:r&ki.FileSize?i.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=t,this.firstFrameHeaderPos=e.startPos);const a=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,s={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:a,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(s),this.nextTimestampInSamples+=t.audioSamplesInFrame}async getMimeType(){return"audio/mpeg"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let i=this.reader.requestSlice(e,Vo);if(de(i)&&(i=await i),!i)break;const r=$o(i);if(!r)break;t=!0;let a=this.reader.requestSlice(i.filePos,r.size);if(de(a)&&(a=await a),!a)break;Go(a,r,this.metadataTags),e=i.filePos+r.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=Ho){let e=this.reader.requestSlice(this.reader.fileSize-Ho,Ho);de(e)&&(e=await e),l(e);"TAG"===Oo(e,3)&&Ko(e,this.metadataTags)}return this.metadataTags}finally{e()}}}class Yr{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return l(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){const e=this.demuxer;if(l(null!==e.firstFrameHeader),l(null!==e.firstFrameHeaderPos),e.xingData){if(null!==e.xingData.frameCount)return e.xingData.frameCount*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}else if(null!==e.reader.fileSize){const s=(t=e.firstFrameHeader.lowSamplingFrequency,i=e.firstFrameHeader.layer,r=e.firstFrameHeader.bitrate,a=e.firstFrameHeader.sampleRate,0===i?0:1===i?144*r/(a<e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}}async getPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=A(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1>>0&4294967295}const ea=e=>{const t=g(e),i=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let a=0;a>>24^t])>>>0}return t.setUint32(22,i,!0),r},ta=(e,t,i)=>{let r=0,a=null;if(e.length>0)if("vorbis"===t.codec){l(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,n=(e[0]&s)>>1;if(n>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=i;const c=t.vorbisInfo.modeBlockflags[n];if(a=t.vorbisInfo.blocksizes[c],1===c){const i=1+(1|s),r=e[0]&i?1:0;o=t.vorbisInfo.blocksizes[r]}r=null!==o?o+a>>2:0}else if("opus"===t.codec){r=(e=>{const t=e[0]>>3,i=3&e[0];let r;return r=0===i?1:1===i||2===i?2:63&e[1],{durationInSamples:St[t]*r}})(e).durationInSamples}return{durationInSamples:r,vorbisBlockSize:a}},ia=27,ra=282,aa=e=>{const t=e.filePos;if(Eo(e)!==Jr)return null;e.skip(1);const i=So(e),r=Do(e),a=Eo(e),s=Eo(e),n=Eo(e),o=So(e),c=new Uint8Array(o);for(let d=0;de+t,0);return{headerStartPos:t,totalSize:l+u,dataStartPos:t+l,dataSize:u,headerType:i,granulePosition:r,serialNumber:a,sequenceNumber:s,checksum:n,lacingValues:c}},sa=(e,t)=>{for(;e.filePos>>8&255)===i||(t>>>16&255)===i||(t>>>24&255)===i){if(e.skip(-4),t===Jr)return!0;e.skip(1)}}return!1};class na extends wi{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.trackBackings=[],this.metadataTags={},this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,ia,ra);if(de(t)&&(t=await t),!t)break;const i=aa(t);if(!i)break;if(!!!(2&i.headerType))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(const t of this.bitstreams){const e=await this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?await this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&await this.readOpusMetadata(e,t),null!==t.codecInfo.codec&&this.trackBackings.push(new oa(t,this)))}})())}async readVorbisMetadata(e,t){let i=await this.findNextPacketStart(e);if(!i)return;const r=await this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;if(i=await this.findNextPacketStart(r),!i)return;const a=await this.readPacket(i.startPage,i.startSegmentIndex);if(!a)return;if(3!==r.data[0]||5!==a.data[0])return;const s=[],n=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};n(e.data.length),n(r.data.length);const o=new Uint8Array(1+s.length+e.data.length+r.data.length+a.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(r.data,1+s.length+e.data.length),o.set(a.data,1+s.length+e.data.length+r.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=a;const c=g(e.data);t.numberOfChannels=c.getUint8(11),t.sampleRate=c.getUint32(12,!0);const l=c.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&l),1<<(l>>4)],modeBlockflags:vt(a.data).modeBlockflags},Ct(r.data.subarray(7),this.metadataTags)}async readOpusMetadata(e,t){const i=await this.findNextPacketStart(e);if(!i)return;const r=await this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=r;const a=(e=>{const t=g(e),i=t.getUint8(9),r=t.getUint16(10,!0),a=t.getUint32(12,!0),s=t.getInt16(16,!0),n=t.getUint8(18);let o=null;return n&&(o=e.subarray(19,21+i)),{outputChannelCount:i,preSkip:r,inputSampleRate:a,outputGain:s,channelMappingFamily:n,channelMappingTable:o}})(e.data);t.numberOfChannels=a.outputChannelCount,t.sampleRate=ni,t.codecInfo.opusInfo={preSkip:a.preSkip},Ct(r.data.subarray(8),this.metadataTags)}async readPacket(e,t){l(te+t.length,0);if(0===o)return null;const c=new Uint8Array(o);let u=0;for(let l=0;l{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(await Promise.all(this.trackBackings.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)))).filter(Boolean)})}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}class oa{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new B,this.internalSampleRate="opus"===e.codecInfo.codec?ni:e.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){const e=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return l(-1!==e),e+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}async getDecoderConfig(){return l(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:this.bitstream.description??void 0}}getName(){return null}getLanguageCode(){return V}getDisposition(){return{...Ee,primary:!1}}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(l(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,i){if(!e)return null;const{durationInSamples:r,vorbisBlockSize:a}=ta(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new Si(i.metadataOnly?Ti:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,r/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:r,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:a}),s}async getFirstPacket(e){l(this.bitstream.lastMetadataPacket);const t=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(l(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const r=await this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(r,{timestampInSamples:i,vorbisLastBlocksize:null},e)}async getNextPacket(e,t){const i=this.encodedPacketToMetadata.get(e);if(!i)throw new Error("Packet was not created from this track.");const r=await this.demuxer.findNextPacketStart(i.packet);if(!r)return null;const a=i.timestampInSamples+i.durationInSamples,s=await this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:a,vorbisLastBlocksize:i.vorbisBlockSize},t)}async getPacket(e,t){if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const i=j(e*this.internalSampleRate);if(0===i)return this.getFirstPacket(t);if(i<0)return null;l(this.bitstream.lastMetadataPacket);const r=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!r)return null;let a=r.startPage,s=this.demuxer.reader.fileSize;const n=[a];e:for(;a.headerStartPos+a.totalSizei?s=u.headerStartPos:(a=u,n.push(u));continue e}r=u.headerStartPos+u.totalSize}}let o=r.startPage;for(const l of n){if(l.granulePosition===a.granulePosition)break;(!o||l.headerStartPos>o.headerStartPos)&&(o=l)}let c=o;const u=[c];for(;c.serialNumber!==this.bitstream.serialNumber||c.granulePosition!==a.granulePosition;){const e=c.headerStartPos+c.totalSize;let t=this.demuxer.reader.requestSliceRange(e,ia,ra);de(t)&&(t=await t),l(t);const i=aa(t);l(i),c=i,c.serialNumber===this.bitstream.serialNumber&&u.push(c)}l(-1!==c.granulePosition);let d,h,f=null,m=c,p=0;if(c.headerStartPos===r.startPage.headerStartPos)d=this.granulePositionToTimestampInSamples(0),h=!0,f=0;else{d=0,h=!1;for(let t=c.lacingValues.length-1;t>=0;t--){if(c.lacingValues[t]<255){f=t+1;break}}if(null===f)throw new Error("Invalid page with granule position: no packets end on this page.");p=f-1;const e={data:Ti,endPage:m,endSegmentIndex:p};if(await this.demuxer.findNextPacketStart(e)){const e=la(u,c,f);l(e);const t=ca(u,e.page,e.segmentIndex);t&&(c=t.page,f=t.segmentIndex)}else for(;;){const e=la(u,c,f);if(!e)break;const t=ca(u,e.page,e.segmentIndex);if(!t)break;if(c=t.page,f=t.segmentIndex,e.page.headerStartPos!==m.headerStartPos){m=e.page,p=e.segmentIndex;break}}}let g=null,k=null;for(;null!==c;){l(null!==f);const e=await this.demuxer.readPacket(c,f);if(!e)break;if(!(c.headerStartPos===r.startPage.headerStartPos&&fi||Math.max(a.timestampInSamples,0)===i))break}const a=await this.demuxer.findNextPacketStart(e);if(!a)break;c=a.startPage,f=a.startSegmentIndex}return g}async getPacketSequential(e,t){const i=await this.sequentialScanMutex.acquire();try{const i=j(e*this.internalSampleRate);e=i/this.internalSampleRate;const r=A(this.sequentialScanCache,i,e=>e.timestampInSamples);let a;if(-1!==r){const e=this.sequentialScanCache[r];a=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else a=await this.getFirstPacket(t);let s=0;for(;a&&a.timestampe)break;if(a=i,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(a);l(e),this.sequentialScanCache.length>0&&l(d(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return a}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const ca=(e,t,i)=>{let r=t,a=i;e:for(;;){for(a--;a>=0;a--){if(r.lacingValues[a]<255){a++;break e}}l(-1===a);if(!(1&r.headerType)){a=0;break}const t=O(e,e=>e.headerStartPos{if(i>0)return{page:t,segmentIndex:i-1};const r=O(e,e=>e.headerStartPos{let e=this.reader.requestSlice(0,12);de(e)&&(e=await e),l(e);const t=Oo(e,4),i="RIFX"!==t,r="RF64"===t,a=Co(e,i);let s=r?this.reader.fileSize:Math.min(a+8,this.reader.fileSize??1/0);if("WAVE"!==Oo(e,4))throw new Error("Invalid WAVE file - wrong format");let n=0,o=null,c=e.filePos;for(;null===s||c=18&&357!==a){const e=vo(r,i),s=t-18;if(Math.min(s,e)>=22&&a===ua.EXTENSIBLE){r.skip(6);const e=To(r,16);a=e[0]|e[1]<<8}}if(a!==ua.MULAW&&a!==ua.ALAW||(c=8),a!==ua.PCM&&a!==ua.IEEE_FLOAT&&a!==ua.ALAW&&a!==ua.MULAW)throw new Error(`Unsupported WAVE codec (format tag ${a}). Only integer/float PCM, A-law, and \u03bc-law are supported.`);if(a===ua.PCM&&![8,16,24,32].includes(c))throw new Error(`Unsupported WAVE PCM bit depth (${c}). Only 8, 16, 24, and 32 bits are supported.`);if(a===ua.IEEE_FLOAT&&![32,64].includes(c))throw new Error(`Unsupported WAVE float bit depth (${c}). Only 32 and 64 bits are supported.`);this.audioInfo={format:a,numberOfChannels:s,sampleRate:n,sampleSizeInBytes:Math.ceil(c/8),blockSizeInBytes:o}}async parseListChunk(e,t,i){var r,a,s,n,o,c,l,u,d,h,f;let m=this.reader.requestSlice(e,t);if(de(m)&&(m=await m),!m)return;const p=Oo(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=Oo(m,4),t=Co(m,i),p=To(m,t);let k=0;for(let i=0;i0&&((c=this.metadataTags).trackNumber??(c.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((l=this.metadataTags).tracksTotal??(l.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||((u=this.metadataTags).date??(u.date=e))}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&((d=this.metadataTags).date??(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":(h=this.metadataTags).genre??(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":(f=this.metadataTags).comment??(f.comment=y)}g+=8+t+(1&t)}}async parseId3Chunk(e,t){let i=this.reader.requestSlice(e,t);if(de(i)&&(i=await i),!i)return;const r=$o(i);if(r){const a=t-Vo;if(r.size=Math.min(r.size,a),r.size>0){const t=i.slice(e+Vo,r.size);Go(t,r,this.metadataTags)}}}getCodec(){if(l(this.audioInfo),this.audioInfo.format===ua.MULAW)return"ulaw";if(this.audioInfo.format===ua.ALAW)return"alaw";if(this.audioInfo.format===ua.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}if(this.audioInfo.format===ua.IEEE_FLOAT){if(4===this.audioInfo.sampleSizeInBytes)return"pcm-f32";if(8===this.audioInfo.sampleSizeInBytes)return"pcm-f64"}l(!1)}async getMimeType(){return"audio/wav"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}const fa=2048;class ma{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.format}async getDecoderConfig(){const e=this.demuxer.getCodec();return e?(l(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null}getNumberOfChannels(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return l(-1!==this.demuxer.dataSize),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return V}getDisposition(){return{...Ee}}async getPacketAtIndex(e,t){l(e>=0),l(this.demuxer.audioInfo);const i=e*fa*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const r=Math.min(fa*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);if(de(e)&&(e=await e),!e)return null}let a;if(t.metadataOnly)a=Ti;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);de(e)&&(e=await e),l(e),a=To(e,r)}const s=e*fa/this.demuxer.audioInfo.sampleRate,n=r/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,this.demuxer.lastKnownPacketIndex),new Si(a,"key",s,n,e,r)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getPacket(e,t){l(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/fa,(this.demuxer.dataSize-1)/(fa*this.demuxer.audioInfo.blockSizeInBytes)));if(i<0)return null;const r=await this.getPacketAtIndex(i,t);if(r)return r;if(0===i)return null;l(null===this.demuxer.reader.fileSize);let a=await this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;a;){const e=await this.getNextPacket(a,t);if(!e)break;a=e}return a}getNextPacket(e,t){l(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/fa);return this.getPacketAtIndex(i+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const pa=e=>{const t=e.filePos,i=To(e,9),r=new _e(i);if(4095!==r.readBits(12))return null;r.skipBits(1);if(0!==r.readBits(2))return null;const a=r.readBits(1),s=r.readBits(2)+1,n=r.readBits(4);if(15===n)return null;r.skipBits(1);const o=r.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);const c=r.readBits(13);r.skipBits(11);const l=r.readBits(2)+1;if(1!==l)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===a?e.filePos-=2:u=r.readBits(16),{objectType:s,samplingFrequencyIndex:n,channelConfiguration:o,frameLength:c,numberOfAacFrames:l,crcCheck:u,startPos:t}},ga=1024;class ka extends wi{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.trackBackings=[],this.readingMutex=new B,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();l(this.firstFrameHeader),this.trackBackings=[new ya(this)]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,Vo);if(de(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=$o(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(de(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=pa(e);if(!t)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&t.startPos+t.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=t);const i=Re[t.samplingFrequencyIndex];l(void 0!==i);const r=ga/i,a={timestamp:this.nextTimestampInSamples/i,duration:r,dataStart:t.startPos,dataSize:t.frameLength};this.loadedSamples.push(a),this.nextTimestampInSamples+=ga,this.lastLoadedPos=t.startPos+t.frameLength}async getMimeType(){return"audio/aac"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0;for(;;){let t=this.reader.requestSlice(e,Vo);if(de(t)&&(t=await t),!t)break;const i=$o(t);if(!i)break;let r=this.reader.requestSlice(t.filePos,i.size);if(de(r)&&(r=await r),!r)break;Go(r,i,this.metadataTags),e=t.filePos+i.size}return this.metadataTags}finally{e()}}}class ya{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/ga}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return V}getCodec(){return"aac"}getInternalCodecId(){return l(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){l(this.demuxer.firstFrameHeader);const e=Fe[this.demuxer.firstFrameHeader.channelConfiguration];return l(void 0!==e),e}getSampleRate(){l(this.demuxer.firstFrameHeader);const e=Re[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return l(void 0!==e),e}getDisposition(){return{...Ee}}async getDecoderConfig(){return l(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}}async getPacketAtIndex(e,t){if(-1===e)return null;const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=Ti;else{let e=this.demuxer.reader.requestSlice(i.dataStart,i.dataSize);if(de(e)&&(e=await e),!e)return null;r=To(e,i.dataSize)}return new Si(r,"key",i.timestamp,i.duration,e,i.dataSize)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getNextPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{const i=F(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}}async getPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=A(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1{var e;let t=0;for(;;){let e=this.reader.requestSlice(t,Vo);if(de(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const i=$o(e);if(!i)break;let r=this.reader.requestSlice(e.filePos,i.size);de(r)&&(r=await r),l(r),Go(r,i,this.metadataTags),t=e.filePos+i.size}for(t+=4;null===this.reader.fileSize||ts.end-6)return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:s.end-e,isLastFrame:!0};if(255===So(s)){const t=s.filePos;if(So(s)!==(1===this.blockingBit?249:248)){s.filePos=t;continue}s.skip(-2);const i=s.filePos-e,r=this.readFlacFrameHeader({slice:s,isFirstPacket:!1});if(!r){s.filePos=t;continue}if(0===this.blockingBit){if(r.num-n.num!==1){s.filePos=t;continue}}else if(r.num-n.num!==n.blockSize){s.filePos=t;continue}return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:i,isLastFrame:!1}}}}readFlacFrameHeader({slice:e,isFirstPacket:t}){const i=e.filePos,r=To(e,4),a=new _e(r);if(32764!==a.readBits(15))return null;if(null===this.blockingBit){l(t);const e=a.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){l(!t);if(1!==a.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");l(!t);if(0!==a.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*2**e:6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?2**e:null)(a.readBits(4));if(!s)return null;l(this.audioInfo);const n=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(a.readBits(4),this.audioInfo.sampleRate);if(!n)return null;a.readBits(4),a.readBits(3);if(0!==a.readBits(1))return null;const o=(e=>{let t=0;const i=new _e(To(e,1));for(;1===i.readBits(1);)t++;if(0===t)return i.readBits(7);const r=[],a=t-1,s=new _e(To(e,a)),n=8-t-1;for(let o=0;oe|t<"uncommon-u16"===t?Po(e)+1:"uncommon-u8"===t?So(e)+1:"number"===typeof t?t:(z(t),void l(!1)))(e,s),u=((e,t)=>"uncommon-u16"===t?Po(e):"uncommon-u16-10"===t?10*Po(e):"uncommon-u8"===t?So(e):"number"===typeof t?t:null)(e,n);if(null===u)return null;if(u!==this.audioInfo.sampleRate)return null;const d=e.filePos-i,h=So(e);e.skip(-d),e.skip(-1);const f=(e=>{let t=0;for(const i of e){t^=i;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(To(e,d));return h!==f?null:{num:o,blockSize:c,sampleRate:u}}async advanceReader(){await this.readMetadata(),l(null!==this.lastLoadedPos),l(this.audioInfo);const e=this.lastLoadedPos,t=await this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],r={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(r),t.isLastFrame&&(this.lastSampleLoaded=!0)}}class wa{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return V}getTimeResolution(){return l(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return l(this.demuxer.audioInfo),0===this.demuxer.audioInfo.totalSamples?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getDisposition(){return{...Ee}}async getDecoderConfig(){return l(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}}async getPacket(e,t){if(l(this.demuxer.audioInfo),e<0)return null;const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=A(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===i){await this.demuxer.advanceReader();continue}const r=this.demuxer.loadedSamples[i],a=r.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(a+r.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(i,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);await this.demuxer.advanceReader()}}finally{i()}}async getNextPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{const i=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}async getPacketAtIndex(e,t){const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=Ti;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(de(e)&&(e=await e),!e)return null;r=To(e,i.byteSize)}l(this.demuxer.audioInfo);const a=i.blockOffset/this.demuxer.audioInfo.sampleRate,s=i.blockSize/this.demuxer.audioInfo.sampleRate;return new Si(r,"key",a,s,e,i.byteSize)}async getFirstPacket(e){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)}}const Ta=9e4,Sa=2**33,va=188,Pa="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",Ia=new Set([133,134,162]),xa=new Set;class Ca extends wi{constructor(e){super(e),this.metadataPromise=null,this.elementaryStreams=[],this.trackBackingEntries=[],this.packetOffset=0,this.packetStride=-1,this.sectionEndPositions=[],this.seekChunkSize=5242880,this.minReferencePointByteDistance=-1,this.timestampWrapInfo=null,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=this.reader.requestSlice(0,205);de(e)&&(e=await e),l(e);const t=To(e,205);if(71===t[0]&&71===t[188])this.packetOffset=0,this.packetStride=va;else if(71===t[0]&&71===t[204])this.packetOffset=0,this.packetStride=204;else{if(71!==t[4]||71!==t[196])throw new Error("Unreachable.");this.packetOffset=4,this.packetStride=192}this.minReferencePointByteDistance=256*this.packetStride;let i=this.packetOffset,r=null,a=!1,s=!1;for(;;){const e=await this.readPacketHeader(i);if(!e)break;if(0===e.payloadUnitStartIndicator){i+=this.packetStride;continue}if(s&&!this.elementaryStreams.some(t=>t.pid===e.pid)){i+=this.packetStride;continue}const t=await this.readSection(i,!0,!s);if(!t)break;const n=3,o=32;let c=!1;if(!s&&0!==t.pid){if(!(0===t.payload[0]&&0===t.payload[1]&&1===t.payload[2])){const e=new _e(t.payload),i=e.readAlignedByte();e.skipBits(8*i);c=2===e.readBits(8)}}if(0!==t.pid||a)if(t.pid!==r&&!c||s){const e=this.elementaryStreams.find(e=>e.pid===t.pid);e:if(e&&!e.initialized){const i=Ea(this,t,!0);if(!i)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${e.pid}`);if(e.firstSection=t,e.canBeTrustedWithKeyPackets=1===t.randomAccessIndicator,this.input._initInput){const i=(await this.input._initInput._getDemuxer()).elementaryStreams.find(i=>i.pid===t.pid&&i.info.codec===e.info.codec);if(i){e.info=i.info,e.initialized=!0;break e}}const r=new Da(e,i);if("video"===e.info.type){for(;;){if(r.suppliedPacket=null,await r.markNextPacket(),"avc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(e.info.avcCodecInfo=Qe(r.suppliedPacket.data),!e.info.avcCodecInfo)continue;const t=e.info.avcCodecInfo.sequenceParameterSets[0];l(t);const i=et(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight;const a=i.pixelAspectRatio.num,s=i.pixelAspectRatio.den;a>0&&s>0&&(a>s?(e.info.squarePixelWidth=Math.round(e.info.width*a/s),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*s/a))),e.info.colorSpace={primaries:w[i.colourPrimaries],transfer:S[i.transferCharacteristics],matrix:P[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}if("hevc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(e.info.hevcCodecInfo=nt(r.suppliedPacket.data),!e.info.hevcCodecInfo)continue;const t=e.info.hevcCodecInfo.arrays.find(e=>e.nalUnitType===Ue.SPS_NUT).nalUnits[0];l(t);const i=st(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight,i.pixelAspectRatio.num>i.pixelAspectRatio.den?(e.info.squarePixelWidth=Math.round(e.info.width*i.pixelAspectRatio.num/i.pixelAspectRatio.den),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*i.pixelAspectRatio.den/i.pixelAspectRatio.num)),e.info.colorSpace={primaries:w[i.colourPrimaries],transfer:S[i.transferCharacteristics],matrix:P[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}throw new Error("Unhandled.")}e.info.decoderConfig={codec:ri({width:e.info.width,height:e.info.height,codec:e.info.codec,codecDescription:null,colorSpace:e.info.colorSpace,avcType:1,avcCodecInfo:e.info.avcCodecInfo,hevcCodecInfo:e.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null,proresFormat:null}),codedWidth:e.info.width,codedHeight:e.info.height,colorSpace:e.info.colorSpace},e.info.width===e.info.squarePixelWidth&&e.info.height===e.info.squarePixelHeight||(e.info.decoderConfig.displayAspectWidth=e.info.squarePixelWidth,e.info.decoderConfig.displayAspectHeight=e.info.squarePixelHeight),e.initialized=!0}else{if(await r.markNextPacket(),!r.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${e.pid}`);if("aac"===e.info.codec){const t=bo.tempFromBytes(r.suppliedPacket.data),i=pa(t);if(!i)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");e.info.aacCodecInfo={isMpeg2:!1,objectType:i.objectType},e.info.numberOfChannels=Fe[i.channelConfiguration],e.info.sampleRate=Re[i.samplingFrequencyIndex]}else if("mp3"===e.info.codec){const t=Bo(bo.tempFromBytes(r.suppliedPacket.data)),i=pi(t,r.suppliedPacket.data.byteLength);if(!i.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");e.info.numberOfChannels=bi(i.header.channel),e.info.sampleRate=i.header.sampleRate}else if("ac3"===e.info.codec){const t=Et(r.suppliedPacket.data);if(!t)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(3===t.fscod)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=Bt[t.acmod]+t.lfeon,e.info.sampleRate=Ne[t.fscod]}else if("eac3"===e.info.codec){const t=Ft(r.suppliedPacket.data);if(!t)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");const i=At(t);if(null===i)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=Dt(t),e.info.sampleRate=i}else{if("dts"!==e.info.codec)throw new Error("Unhandled.");{const t=Ht(r.suppliedPacket.data);if(!t)throw new Error("Invalid DTS audio stream; could not read frame header from first packet.");e.info.numberOfChannels=t.numberOfChannels,e.info.sampleRate=t.sampleRate,t.core&&(e.info.dtsFormat=t.hasExtensions?"dtsh":"dtsc")}}e.info.decoderConfig={codec:si({codec:e.info.codec,codecDescription:null,aacCodecInfo:e.info.aacCodecInfo,dtsFormat:e.info.dtsFormat}),numberOfChannels:e.info.numberOfChannels,sampleRate:e.info.sampleRate},e.initialized=!0}}}else{const e=new _e(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(12);const r=e.readBits(12);e.skipBits(43),e.readBits(13),e.skipBits(6);const a=e.readBits(10),c=e.pos+8*a;let l=!1;for(;e.pos=4){const t=e.readBits(32);l||(l=1212435798===t||1212436562===t)}e.pos=r}for(e.pos=c;8*(r+n)-e.pos>o;){const t=e.readBits(8);e.skipBits(3);const i=e.readBits(13);e.skipBits(6);const r=e.readBits(10),a=e.pos+8*r;let s=!1,n=!1,o=!1;for(;e.pos=4){const t=e.readBits(32);o||(o=1146376960===(4294967040&t))}e.pos=r}let c=null;const u=l&&Ia.has(t)?130:t;switch(u){case 27:case 36:c={type:"video",codec:27===t?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:case 130:case 138:{let e;e=3===u||4===u?"mp3":15===u?"aac":129===u?"ac3":135===u?"eac3":"dts",c={type:"audio",codec:e,decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:n?c={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:s?c={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:o&&(c={type:"audio",codec:"dts",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1});break;default:xa.has(t)||(xe._warn(`Note: MPEG-TS streams with stream_type 0x${t.toString(16)} are not currently supported.`),xa.add(t))}c&&this.elementaryStreams.push({demuxer:this,pid:i,streamType:t,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:c,referencePesPackets:[]})}s=!0}else{const e=new _e(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(14);const s=e.readBits(10);for(e.skipBits(40);8*(s+n)-e.pos>o;){const t=e.readBits(16);e.skipBits(3);const i=e.readBits(13);if(0!==t){if(null!==r)throw new Error("Only files with a single program are supported.");r=i}}if(null===r)throw new Error("Program Association Table must link to a Program Map Table.");a=!0}if(s&&this.elementaryStreams.every(e=>e.initialized))break;i+=this.packetStride}if(!s){if(!a)throw new Error("No Program Association Table found in the file.");throw new Error("No Program Map Table found in the file.")}for(const n of this.elementaryStreams)n.initialized&&("video"===n.info.type?this.trackBackingEntries.push(new Ra(n)):this.trackBackingEntries.push(new Fa(n)))})())}async getTrackBackings(){return await this.readMetadata(),this.trackBackingEntries}async getMetadataTags(){return{}}async getMimeType(){await this.readMetadata();return(e=>{let t="video/MP2T";const i=[...new Set(e.filter(Boolean))];return i.length>0&&(t+=`; codecs="${i.join(", ")}"`),t})(await Promise.all(this.trackBackingEntries.map(e=>e.getDecoderConfig().then(e=>e?.codec??null))))}async readSection(e,t,i=!1){let r=e,a=e;const s=[];let n,o=0,c=null,l=!0,u=0;for(;;){const e=await this.readPacket(a);if(a+=this.packetStride,!e)break;if(c){if(e.pid!==c.pid){if(i)break;continue}if(1===e.payloadUnitStartIndicator)break}else{if(0===e.payloadUnitStartIndicator)break;c=e}const n=!!(2&e.adaptationFieldControl),d=!!(1&e.adaptationFieldControl);let h=0;if(n&&(h=1+e.body[0],e===c&&h>1&&(u=e.body[1]>>6&1)),d&&(0===h?(s.push(e.body),o+=e.body.byteLength):(s.push(e.body.subarray(h)),o+=e.body.byteLength-h)),r=a,!t&&o>=64){l=!1;break}if(-1!==F(this.sectionEndPositions,r,e=>e)){l=!1;break}}if(l){const e=A(this.sectionEndPositions,r,e=>e);this.sectionEndPositions.splice(e+1,0,r)}if(!c)return null;if(1===s.length)n=s[0];else{const e=s.reduce((e,t)=>e+t.length,0);n=new Uint8Array(e);let t=0;for(const i of s)n.set(i,t),t+=i.length}return{startPos:e,endPos:t?r:null,pid:c.pid,payload:n,randomAccessIndicator:u}}async readPacketHeader(e){let t=this.reader.requestSlice(e,4);if(de(t)&&(t=await t),!t)return null;if(71!==So(t))throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const i=Po(t);return{payloadUnitStartIndicator:i>>14&1,pid:8191&i,adaptationFieldControl:So(t)>>4&3}}async readPacket(e){let t=this.reader.requestSlice(e,va);if(de(t)&&(t=await t),!t)return null;const i=To(t,va);if(71!==i[0])throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const r=(i[1]<<8)+i[2];return{payloadUnitStartIndicator:r>>14&1,pid:8191&r,adaptationFieldControl:i[3]>>4&3,body:i.subarray(4)}}normalizeTimestamp(e){if(!this.timestampWrapInfo){const t=54e5;this.timestampWrapInfo={reference:e-t,offset:e>=Sa-t?-8589934592:Sa}}const{reference:t,offset:i}=this.timestampWrapInfo;return i<0&&e>=t||i>0&&e{if(t.payload.byteLength<3)return null;const r=new _e(t.payload);if(1!==r.readBits(24))return null;const a=r.readBits(8);if(r.skipBits(16),188===a||190===a||191===a||240===a||241===a||255===a||242===a||248===a)return null;r.skipBits(8);const s=r.readBits(2);r.skipBits(14);let n=null;if(2===s||3===s)n=0,r.skipBits(4),n+=r.readBits(3)*(1<<30),r.skipBits(1),n+=32768*r.readBits(15),r.skipBits(1),n+=r.readBits(15),n=e.normalizeTimestamp(n);else if(i)throw new Error(Pa);return{sectionStartPos:t.startPos,sectionEndPos:t.endPos,pts:n,randomAccessIndicator:t.randomAccessIndicator}},Ea=(e,t,i)=>{l(null!==t.endPos);const r=Ba(e,t,i);if(!r)return null;const a=new _e(t.payload);a.skipBits(32);const s=a.readBits(16);a.skipBits(16);const n=a.readBits(8),o=a.pos+8*n;a.pos=o;const c=o/8;l(Number.isInteger(c));const u=t.payload.subarray(c,s>0?6+s:t.payload.byteLength);return{...r,data:u}};class _a{constructor(e){this.elementaryStream=e,this.packetBuffers=new WeakMap,this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){const e=this.elementaryStream.demuxer,t=this.elementaryStream.info.type;let i=0;for(const r of e.trackBackingEntries)if(r.getType()===t&&i++,l(r instanceof _a),r.elementaryStream===this.elementaryStream)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return V}getDisposition(){return{...Ee,primary:!1}}getTimeResolution(){return Ta}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}createEncodedPacket(e,t,i){let r;return r=this.allPacketsAreKeyPackets()||1===e.randomAccessIndicator?"key":"delta",new Si(i.metadataOnly?Ti:e.data,r,e.pts/Ta,Math.max(t/Ta,0),e.sequenceNumber,e.data.byteLength)}async getFirstPacket(e){const t=this.elementaryStream.firstSection;l(t);const i=Ea(this.elementaryStream.demuxer,t,!0);l(i);const r=new Da(this.elementaryStream,i),a=new Ma(this,r),s=await a.readNext();if(!s)return null;const n=this.createEncodedPacket(s.packet,s.duration,e);return this.packetBuffers.set(n,a),this.packetSectionStarts.set(n,s.packet.sectionStartPos),n}async getNextPacket(e,t){let i=this.packetBuffers.get(e);if(i){const r=await i.readNext();if(!r)return null;this.packetBuffers.delete(e);const a=this.createEncodedPacket(r.packet,r.duration,t);return this.packetBuffers.set(a,i),this.packetSectionStarts.set(a,r.packet.sectionStartPos),a}const r=this.packetSectionStarts.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");const a=this.elementaryStream.demuxer,s=await a.readSection(r,!0);l(s);const n=Ea(a,s,!0);l(n);const o=new Da(this.elementaryStream,n);i=new Ma(this,o);const c=e.sequenceNumber;for(;;){const e=await i.readNext();if(!e)return null;if(e.packet.sequenceNumber>c){const r=this.createEncodedPacket(e.packet,e.duration,t);return this.packetBuffers.set(r,i),this.packetSectionStarts.set(r,e.packet.sectionStartPos),r}}}async getNextKeyPacket(e,t){let i=e;for(;;){if(i=await this.getNextPacket(i,t),!i)return null;if("key"===i.type)return i}}getPacket(e,t){return this.doPacketLookup(e,!1,t)}getKeyPacket(e,t){return this.doPacketLookup(e,!0,t)}async doPacketLookup(e,t,i){const r=j(e*Ta),a=this.elementaryStream.demuxer,{reader:s,seekChunkSize:n}=a,o=this.elementaryStream.pid,c=async(e,t,i)=>{let r=e;for(;re.pts),g=-1!==p?m[p]:null;if(g&&r-g.pts<45e3)f=g.sectionStartPos;else{let e=0;if(null!==s.fileSize){const t=Math.ceil(s.fileSize/n);if(t>1){let i=0,s=t-1;for(e=i;i<=s;){const t=Math.floor((i+s)/2),o=$(t*n,a.packetStride)+h.sectionStartPos,l=o+n,u=await c(o,l,!1);u?u.pesPacketHeader.pts<=r?(e=t,i=t+1):s=t-1:s=t-1}}}f=$(e*n,a.packetStride)+h.sectionStartPos}const k=await c(f,s.fileSize??1/0,!1);let y=k?.pesPacketHeader??null;y||(y=h);const b=this.getReorderSize(),w=async(e,t)=>{const s=await a.readSection(e,!0);l(s);const n=Ea(a,s,!0);l(n);const o=new Da(this.elementaryStream,n),c=new Ma(this,o);for(;;){if((d(c.presentationOrderPackets)?.pts??-1/0)>=r)break;if(!(await c.readNextPacket()))break}const u=L(c.presentationOrderPackets,t);if(-1===u)return null;const h=c.presentationOrderPackets[u],f=0===u?0:h.pts-c.presentationOrderPackets[u-1].pts;for(;c.decodeOrderPackets[0]!==h;)c.decodeOrderPackets.shift();c.lastDuration=f;const m=await c.readNext();l(m);const p=this.createEncodedPacket(m.packet,m.duration,i);return this.packetBuffers.set(p,c),this.packetSectionStarts.set(p,m.packet.sectionStartPos),p};if(!t||this.allPacketsAreKeyPackets()){e:for(;;){let e=y.sectionStartPos+a.packetStride;for(;;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,!1);if(t){const e=Ba(a,t,!1);if(e&&null!==e.pts){if(e.pts>r)break e;y=e,Aa(this.elementaryStream,y);break}}}e+=a.packetStride}}e:for(let e=0;e=a.packetOffset;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,!1);if(t){const e=Ba(a,t,!1);if(e&&null!==e.pts){y=e;break}}}e-=a.packetStride}}return w(y.sectionStartPos,e=>e.pts<=r)}{let e=f,t=null;const i=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let d=null;const f=e<=h.sectionStartPos;let m,p=null;if(f)m=h,p=u;else{const t=await c(e,s.fileSize??1/0,i);m=t?.pesPacketHeader??null,p=t?.section??null}let g=!1,k=0;e:for(;m&&!(null!==t&&m.sectionStartPos>=t);){if(m.pts<=r){let e;if(this.elementaryStream.canBeTrustedWithKeyPackets)e=1===m.randomAccessIndicator;else{l(p);const t=Ea(a,p,!0);l(t);const i=new Da(this.elementaryStream,t);await i.markNextPacket(),e=1===i.suppliedPacket?.randomAccessIndicator}e&&(d=m)}if(m.pts>r&&(g=!0),g&&(k++,k>b))break;let e=m.sectionStartPos+a.packetStride;for(;;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,i);if(t){const e=Ba(a,t,!1);if(e&&null!==e.pts){m=e,p=t,Aa(this.elementaryStream,m);break}}}e+=a.packetStride}}if(d){let e=d;if(0===k)e:for(let r=0;r=a.packetOffset;){const r=await a.readPacketHeader(t);if(!r)break e;if(r.pid===o&&1===r.payloadUnitStartIndicator){const r=await a.readSection(t,i);if(r){const t=Ba(a,r,!1);if(t&&null!==t.pts){e=t;break}}}t-=a.packetStride}}const t=await w(e.sectionStartPos,e=>e.pts<=r&&1===e.randomAccessIndicator);return l(t),t}if(f)return null;t=e,e=Math.max($(e-h.sectionStartPos-n,a.packetStride)+h.sectionStartPos,h.sectionStartPos)}}}}class Ra extends _a{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}async getColorSpace(){return this.elementaryStream.info.colorSpace}async canBeTransparent(){return!1}async getDecoderConfig(){return l(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}}class Fa extends _a{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}async getDecoderConfig(){return l(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}}const Aa=(e,t)=>{const i=e.referencePesPackets,r=A(i,t.sectionStartPos,e=>e.sectionStartPos);if(r>=0){const a=i[r];if(t.pts<=a.pts)return!1;const s=e.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-a.sectionStartPos=e?e:this.bufferData(e-t).then(()=>Math.min(this.endPos-this.currentPos,e))}getCurrentPesPacket(){const e=this.pesPackets[this.currentPesPacketIndex];return l(e),e}async bufferData(e){const t=this.endPos+e;for(;this.endPos=l)break;u=e;const i=o+u;if(u+3>=l){this.seekTo(i);break}const d=c[u+1],f=c[u+2],m=c[u+3];let p=0;if(0===d&&0===f&&1===m?p=4:0===d&&1===f&&(p=3),0===p){u++;continue}const g=i;a??(a=g);const k=u+p,y=k+r,b=6;if(y+("avc"===t?b:1)>l){this.seekTo(i);break}const w=c[k];let T,S,v;if("avc"===t)T=je(w),S=T===Le.NON_IDR_SLICE||T===Le.SLICE_DPA||T===Le.IDR,v=T===Le.SEI||T===Le.SPS||T===Le.PPS||T===Le.AUD;else{T=at(w);if(((1&w)<<5|c[k+1]>>3)>0){u+=p;continue}S=T<=Ue.RASL_R||T>=Ue.BLA_W_LP&&T<=21,v=T>=Ue.VPS_NUT&&T<=37||T===Ue.PREFIX_SEI_NUT||T>=41&&T<=44||T>=48&&T<=55}let P=!1;if(S){let e;if("avc"===t){const t=c.subarray(y,y+b),i=h(new _e(t));e=!s||i<=n,n=i}else e=c[y]>>7===1;e&&(s?P=!0:s=!0)}else v&&s&&(P=!0);if(P){const e=g-a;return this.seekTo(a),this.supplyPacket(e,0)}u+=p}if(ea){const e=this.endPos-a;return this.seekTo(a),this.supplyPacket(e,0)}}else{const t=e.info.codec,i=128;for(;;){let r=this.ensureBuffered(i);de(r)&&(r=await r);const a=this.currentPos;for(;this.currentPos-a>6,n=63&a[4];if(3===s||n>37){this.seekTo(t+1);continue}const o=_t[3*n+s];l(void 0!==o),this.seekTo(t),r=this.ensureBuffered(o),de(r)&&(r=await r);const c=Math.round(13824e4/e.info.sampleRate);return this.supplyPacket(r,c)}if("eac3"===t){if(11!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(5);if(de(r)&&(r=await r),r<5)return;const a=this.readBytes(5);if(11!==a[0]||119!==a[1]){this.seekTo(t+1);continue}const s=2*(((7&a[2])<<8|a[3])+1),n=3===a[4]>>6?3:a[4]>>4&3,o=Rt[n];this.seekTo(t),r=this.ensureBuffered(s),de(r)&&(r=await r);const c=256*o,l=Math.round(c*Ta/e.info.sampleRate);return this.supplyPacket(r,l)}if("dts"===t){if(127!==i&&100!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(18);if(de(r)&&(r=await r),r<18)return;const a=this.readBytes(18),s=jt(a);let n=s?null:Kt(a);if(!s&&!n){this.seekTo(t+1);continue}if(n&&!n.asset){this.seekTo(t);const e=Math.min(n.frameSize,4096);let i=this.ensureBuffered(e);de(i)&&(i=await i),n=Kt(this.readBytes(i))??n}let o=s?s.frameSize:n.frameSize;if(s){let e=4*Math.ceil(s.frameSize/4);for(;;){this.seekTo(t);const i=e+10;let r=this.ensureBuffered(i);if(de(r)&&(r=await r),r=0)}async readNext(){if(0===this.decodeOrderPackets.length){if(!(await this.readNextPacket()))return null}await this.ensureCurrentPacketHasNext();const e=this.decodeOrderPackets[0],t=this.presentationOrderPackets.indexOf(e);let i;if(l(-1!==t),t===this.presentationOrderPackets.length-1)i=this.lastDuration;else{i=this.presentationOrderPackets[t+1].pts-e.pts,this.lastDuration=i}for(this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){const e=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(e))break;this.presentationOrderPackets.shift()}return{packet:e,duration:i}}async readNextPacket(){if(this.reachedEnd)return!1;let e;return this.context.suppliedPacket||await this.context.markNextPacket(),e=this.context.suppliedPacket,this.context.suppliedPacket=null,e?(this.decodeOrderPackets.push(e),this.processPacketThroughReorderBuffer(e),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)}async ensureCurrentPacketHasNext(){const e=this.decodeOrderPackets[0];for(l(e);;){const t=this.presentationOrderPackets.indexOf(e);if(-1!==t&&t<=this.presentationOrderPackets.length-2)break;if(!(await this.readNextPacket()))break}}processPacketThroughReorderBuffer(e){if(this.reorderBuffer.push(e),this.reorderBuffer.length>this.reorderSize){let e=0;for(let i=1;ie.pts-t.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}}const Na="application/vnd.apple.mpegurl",Oa="#EXT-X-STREAM-INF:",La="#EXT-X-I-FRAME-STREAM-INF:",za="#EXT-X-MEDIA:",Ua="#EXTINF:",qa="#EXT-X-MAP:",Wa="#EXT-X-KEY:",Ha="#EXT-X-MEDIA-SEQUENCE:",Va="#EXT-X-BYTERANGE:",ja="#EXT-X-PROGRAM-DATE-TIME:",Ka="#EXT-X-TARGETDURATION:",Xa="#EXT-X-PLAYLIST-TYPE:",$a=e=>0===e.length||e.startsWith("#")&&!e.startsWith("#EXT");class Ga{constructor(e){this._attributes={};let t="",i="",r=!1,a=!1;for(let s=0;s{const e=[];if(this.trackDeclarations){for(const t of this.trackDeclarations)if("video"===t.type){const i=ye(e,e=>"video"===e.getType())+1;e.push(new Ja(this,t,i))}else if("audio"===t.type){const i=ye(e,e=>"audio"===e.getType())+1;e.push(new Za(this,t,i))}}else{if(this.firstSegment=await this.getFirstSegment({}),!this.firstSegment)return[];const t=this.getInputForSegment(this.firstSegment),i=await t.getTracks();for(const r of i)if("video"===r.type){const t=ye(e,e=>"video"===e.getType())+1;e.push(new Ja(this,{id:e.length+1,type:"video"},t))}else if("audio"===r.type){const t=ye(e,e=>"audio"===e.getType())+1;e.push(new Za(this,{id:e.length+1,type:"audio"},t))}}return e})())}async getFirstTimestampForInput(e){const t=this.firstTimestampCache.get(e);if(void 0!==t)return t;const i=await e.getFirstTimestamp();return this.firstTimestampCache.set(e,i),i}async getMediaOffset(e,t){const i=e.firstSegment??e;let r;if(this.firstSegmentFirstTimestamps.has(i))r=this.firstSegmentFirstTimestamps.get(i);else{const e=this.getInputForSegment(i);r=await this.getFirstTimestampForInput(e),this.firstSegmentFirstTimestamps.set(i,r)}if(i===e)return i.timestamp-r;const a=await this.getFirstTimestampForInput(t),s=e.timestamp-i.timestamp,n=a-r-s;return Math.abs(n)<=Math.min(.25,s)?i.timestamp-r:e.timestamp-a}dispose(){for(const e of this.inputCache)e.input.dispose();this.inputCache.length=0}}class Ya{constructor(e,t,i){this.packetInfos=new WeakMap,this.hydrationPromise=null,this.firstInputTrack=null,this.firstSegment=null,this.segmentedInput=e,this.decl=t,this.number=i}hydrate(){return this.hydrationPromise??(this.hydrationPromise=(async()=>{var e;if((e=this.segmentedInput).firstSegment??(e.firstSegment=await this.segmentedInput.getFirstSegment({})),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let t=this.segmentedInput.firstSegment,i=null;for(;t;){const e=this.segmentedInput.getInputForSegment(t);if(i=(await e.getTracks()).find(e=>e.type===this.decl.type&&e.number===this.number)??null,i)break;t=await this.segmentedInput.getNextSegment(t,{})}if(!i)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=i,this.firstSegment=t})())}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(e){return this.firstInputTrack?e():this.hydrate().then(e)}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}getHasOnlyKeyPackets(){return this.delegate(()=>this.firstInputTrack._backing.getHasOnlyKeyPackets?.()??null)}getPairingMask(){return 1n}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}async isRelativeToUnixEpoch(){return await this.hydrate(),l(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.unixEpochTimestamp===this.segmentedInput.firstSegment.timestamp}getUnixTimeForTimestamp(e){return this.segmentedInput.getUnixTimeForTimestamp(e)}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(e){return this.segmentedInput.getDurationFromMetadata(e)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}async createAdjustedPacket(e,t,i){l(e.sequenceNumber>=0),l(this.segmentedInput.firstSegment);const r=await this.segmentedInput.getMediaOffset(t,i.input),a=t.timestamp-this.segmentedInput.firstSegment.timestamp,s=e.clone({timestamp:X(e.timestamp+r,await i.getTimeResolution()),sequenceNumber:Math.floor(1e8*a)+e.sequenceNumber});return this.packetInfos.set(s,{segment:t,track:i,sourcePacket:e}),s}async getFirstPacket(e){await this.hydrate(),l(this.firstInputTrack),l(this.firstSegment);let t=this.firstInputTrack,i=this.firstSegment;for(;;){if(t){const r=await t._backing.getFirstPacket(e);if(r)return this.createAdjustedPacket(r,i,t)}if(i=await this.segmentedInput.getNextSegment(i,{skipLiveWait:e.skipLiveWait}),!i)break;const r=this.segmentedInput.getInputForSegment(i);t=(await r.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number)??null}return null}getNextPacket(e,t){return this._getNextInternal(e,t,!1)}getNextKeyPacket(e,t){return this._getNextInternal(e,t,!0)}async _getNextInternal(e,t,i){const r=this.packetInfos.get(e);if(!r)throw new Error("Packet was not created from this track.");const a=i?await r.track._backing.getNextKeyPacket(r.sourcePacket,t):await r.track._backing.getNextPacket(r.sourcePacket,t);if(a)return this.createAdjustedPacket(a,r.segment,r.track);let s=r.segment;for(;;){const e=await this.segmentedInput.getNextSegment(s,{skipLiveWait:t.skipLiveWait});if(!e)return null;const i=this.segmentedInput.getInputForSegment(e),a=(await i.getTracks()).find(e=>e.type===r.track.type&&e.number===r.track.number);if(!a){s=e;continue}const n=await a._backing.getFirstPacket(t);return n?this.createAdjustedPacket(n,e,a):null}}getPacket(e,t){return this._getPacketInternal(e,t,!1)}getKeyPacket(e,t){return this._getPacketInternal(e,t,!0)}async _getPacketInternal(e,t,i){let r=await this.segmentedInput.getSegmentAt(e,{skipLiveWait:t.skipLiveWait});if(!r)return null;for(await this.hydrate();r;){const a=this.segmentedInput.getInputForSegment(r),s=(await a.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number);if(!s){r=await this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait});continue}const n=e-await this.segmentedInput.getMediaOffset(r,a),o=i?await s._backing.getKeyPacket(n,t):await s._backing.getPacket(n,t);if(o)return this.createAdjustedPacket(o,r,s);r=await this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait})}return null}}class Ja extends Ya{getType(){return"video"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getCodedWidth(){return this.delegate(()=>this.firstInputTrack._backing.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.firstInputTrack._backing.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelHeight())}getRotation(){return this.delegate(()=>this.firstInputTrack._backing.getRotation())}async getColorSpace(){return this.delegate(()=>this.firstInputTrack._backing.getColorSpace())}async canBeTransparent(){return this.delegate(()=>this.firstInputTrack._backing.canBeTransparent())}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}}class Za extends Ya{getType(){return"audio"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getNumberOfChannels(){return this.delegate(()=>this.firstInputTrack._backing.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.firstInputTrack._backing.getSampleRate())}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}}pe();const es=1/0;"undefined"!==typeof FinalizationRegistry&&new FinalizationRegistry(e=>{e()});class ts extends ve{constructor(){super(),this._disposed=!1,this._refCount=0,this._usedForHls=!1,this._refFinalizationRegistry=null,this._sizePromise=null,this.onread=null,"undefined"!==typeof FinalizationRegistry&&(this._refFinalizationRegistry=new FinalizationRegistry(e=>{e._decrementRefCount()}))}async getSizeOrNull(){if(this._disposed)throw new ko;return this._sizePromise??(this._sizePromise=(async()=>{let e=this._getFileSize();return void 0!==e||(await this._read(0,1,0,es),e=this._getFileSize(),l(void 0!==e)),e})())}async getSize(){if(this._disposed)throw new ko;const e=await this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e}slice(e,t){if(!Number.isInteger(e)||e<0)throw new TypeError("offset must be a non-negative integer.");if(void 0!==t&&(!Number.isInteger(t)||t<0))throw new TypeError("length, when provided, must be a non-negative integer.");return new gs(this,e,t)}_dispatchRead(e,t){this.onread?.(e,t),this._emit("read",{start:e,end:t})}ref(){return new is(this)}_incrementRefCount(){this._refCount++}_decrementRefCount(){this._refCount--,0===this._refCount&&(this._dispose(),this._disposed=!0)}}class is{constructor(e){if(this._freed=!1,e._disposed)throw new Error("Cannot ref a disposed source.");e._incrementRefCount(),e._refFinalizationRegistry?.register(this,e,this),this._source=e}get source(){if(!this._source)throw new Error("Can't get source; ref has already been freed.");return this._source}get freed(){return this._freed}free(){if(this._freed)throw new Error("Illegal operation: double free on SourceRef.");const e=this.source;l(e._refCount>0),e._decrementRefCount(),e._refFinalizationRegistry?.unregister(this),this._freed=!0,this._source=null}[Symbol.dispose](){this.freed||this.free()}}class rs extends ts{constructor(e,t){if("string"!==typeof e)throw new TypeError("rootPath must be a string.");if("function"!==typeof t)throw new TypeError("requestHandler must be a function.");super(),this.rootPath=e,this.requestHandler=t}_resolveRequest(e){const t=this.requestHandler(e),i=e=>{var t;if(!(e instanceof ts||e instanceof is))throw new TypeError("requestHandler must return or resolve to a Source or SourceRef.");const i=e instanceof ts?e.ref():e;return(t=i.source)._usedForHls||(t._usedForHls=this._usedForHls),i};return de(t)?t.then(i):i(t)}}const as=(e,t)=>e.path===t.path;class ss extends rs{constructor(){super(...arguments),this._root=null,this._rootRequest=null}_read(e,t,i,r){if(!this._root){if(!this._rootRequest){const e=this._resolveRequest({path:this.rootPath,isRoot:!0}),t=e=>{const t=e instanceof ts?e.ref():e;return this._root=t,this._rootRequest=null,t};de(e)?this._rootRequest=e.then(t):(t(e),l(this._root))}if(this._rootRequest)return this._rootRequest.then(a=>a.source._read(e,t,i,r))}return this._root.source._read(e,t,i,r)}_getFileSize(){if(this._root)return this._root.source._getFileSize()}_dispose(){this._root?this._root.free():this._rootRequest&&this._rootRequest.then(e=>e.free())}}const ns="undefined"!==typeof FinalizationRegistry?new FinalizationRegistry(e=>{e.cancel().catch(()=>{})}):null;class os extends ts{constructor(e,t={}){if(!(e instanceof Blob))throw new TypeError("blob must be a Blob.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.maxCacheSize&&(!ge(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.useStreamReader&&"boolean"!==typeof t.useStreamReader)throw new TypeError("options.useStreamReader, when provided, must be a boolean.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(),this._readers=new WeakMap,this._blob=e,this._options=t,this._orchestrator=new ps({maxCacheSize:t.maxCacheSize??8388608,maxWorkerCount:4,runWorker:this._runWorker.bind(this),onIdleWorkerRemoved:e=>{const t=this._readers.get(e);t&&(this._readers.delete(e),ns?.unregister(e),t.cancel().catch(()=>{}))},prefetchProfile:ms.fileSystem,handleUnhandledError:t.handleUnhandledError}),this._orchestrator.fileSize=e.size}_getFileSize(){return this._orchestrator.fileSize}_read(e,t,i,r){return this._orchestrator.read(e,t,i,r)}async _runWorker(e){l(e.strictTarget);let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!ae()&&!1!==this._options.useStreamReader){t=this._blob.slice(e.currentPos).stream().getReader(),ns?.register(e,t,e)}else t=null;this._readers.set(e,t)}for(;e.currentPos{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))&&"undefined"!==typeof window){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(i instanceof Request?i.url:i,window.location.href).origin)}catch{}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return xe._warn("Request will not be retried because a CORS error was suspected due to different origins. You can modify this behavior by providing your own function for the 'getRetryDelay' option."),null}return Math.min(2**(e-2),16)},ls=new Set;class us extends rs{constructor(e,t={}){if("string"!==typeof e&&!(e instanceof URL)&&!("undefined"!==typeof Request&&e instanceof Request))throw new TypeError("url must be a string, URL or Request.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.requestInit&&(!t.requestInit||"object"!==typeof t.requestInit))throw new TypeError("options.requestInit, when provided, must be an object.");if(void 0!==t.getRetryDelay&&"function"!==typeof t.getRetryDelay)throw new TypeError("options.getRetryDelay, when provided, must be a function.");if(void 0!==t.maxCacheSize&&(!ge(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.parallelism&&(!Number.isInteger(t.parallelism)||t.parallelism<1))throw new TypeError("options.parallelism, when provided, must be a positive number.");if(void 0!==t.fetchFn&&"function"!==typeof t.fetchFn)throw new TypeError("options.fetchFn, when provided, must be a function.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(e instanceof Request?e.url:e instanceof URL?e.href:e,e=>new us(e.path,this._options)),this._offset=0,this._length=null,this._fileSizeDetermined=!1,this._sequentialBacking=null,this._url=e,this._options=t,this._getRetryDelay=t.getRetryDelay??cs,this._requestInit={...t.requestInit};let i=null;if(t.requestInit?.headers){const e={...ee(t.requestInit.headers)},r=Object.keys(e).find(e=>"range"===e.toLowerCase());void 0!==r&&(i=e[r],delete e[r],this._requestInit.headers=e)}if(e instanceof Request){const t=e.headers.get("Range");if(null!==t){i??(i=t);const r=new Request(e);r.headers.delete("Range"),this._url=r}}if(null!==i){const e=hs(i);e&&(this._offset=e.offset,this._length=e.length)}this._orchestrator=new ps({maxCacheSize:t.maxCacheSize??67108864,maxWorkerCount:t.parallelism??2,runWorker:this._runWorker.bind(this),prefetchProfile:ms.network,handleUnhandledError:t.handleUnhandledError})}_getFileSize(){if(!this._fileSizeDetermined)return null!==this._length?this._length:void 0;const e=this._sequentialBacking?this._sequentialBacking._endIndex:this._orchestrator.fileSize;return null===e?null!==this._length?this._length:null:H(e-this._offset,0,this._length??1/0)}_read(e,t,i,r){if(null!==this._length&&t>this._length)return null;const a=this._offset,s=this._sequentialBacking?this._sequentialBacking._read(a+e,a+t):this._orchestrator.read(a+e,a+t,Math.max(a+i,a),a+Math.min(r,this._length??1/0)),n=e=>e?(e.offset-=this._offset,e):null;return de(s)?s.then(n):n(s)}async _runWorker(e){for(;;){const i=new AbortController,r=await te(this._options.fetchFn??fetch,this._url,Z(this._requestInit,{headers:{Range:`bytes=${e.currentPos}-`},signal:i.signal}),this._getRetryDelay,()=>this._disposed);if(!r.ok)throw new Error(`Error fetching ${String(this._url)}: ${r.status} ${r.statusText}`);r.redirected&&(this.rootPath=r.url);e:if(null===this._orchestrator.fileSize&&(206===r.status||"basic"===r.type&&!r.headers.has("Content-Encoding"))){const t=r.headers.get("Content-Range");if(t){const e=/\/(\d+)/.exec(t);if(e){this._orchestrator.supplyFileSize(Number(e[1]));break e}}const i=r.headers.get("Content-Length");if(i){const t=206===r.status?e.currentPos:0;this._orchestrator.supplyFileSize(t+Number(i))}}if(this._fileSizeDetermined=!0,!r.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");if(206!==r.status){if(this._sequentialBacking)return void r.body.cancel();if(!this._usedForHls){const e=new URL(this._url instanceof Request?this._url.url:this._url,"undefined"!==typeof window?window.location.href:void 0);"null"===e.origin||e.pathname.endsWith(".m3u8")||e.pathname.endsWith(".m3u")||ls.has(e.origin)||(xe._warn(`HTTP server (origin ${e.origin}) did not respond to a range request with 206 Partial Content, meaning the resource will now be streamed sequentially, with old data being evicted from the cache. Reads into evicted regions will throw. To enable efficient media file streaming across a network, please make sure your server supports range requests. Alternatively, set maxCacheSize to Infinity in the UrlSource options to keep the entire resource in memory.`),ls.add(e.origin))}return void this._transitionToSequentialMode(r.body)}const a=r.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted)return i.abort(),void this._orchestrator.signalWorkerStoppedRunning(e);let r;try{r=await a.read()}catch(t){if(this._disposed)throw t;const e=this._getRetryDelay(1,t,this._url);if(null!==e){xe._error("Error while reading response stream. Attempting to resume.",t),await Se(1e3*e);break}throw t}if(e.aborted)continue;const{done:s,value:n}=r;if(s){if(e.currentPos>=e.targetPos)return void this._orchestrator.onWorkerFinished(e);if(e.strictTarget)break;return void this._orchestrator.onWorkerFinished(e)}this._dispatchRead(e.currentPos,e.currentPos+n.length),this._orchestrator.supplyWorkerData(e,n)}}}_transitionToSequentialMode(e){let t=e.getReader(),i=0,r=0;const a=new ReadableStream({pull:async e=>{for(;;){let s;try{s=await t.read()}catch(a){if(this._disposed)throw a;const e=this._getRetryDelay(1,a,this._url);if(null===e)throw a;xe._error("Error while reading response stream. Attempting to resume.",a),await Se(1e3*e);const s=await te(this._options.fetchFn??fetch,this._url,Z(this._requestInit,{headers:{Range:`bytes=${i}-`}}),this._getRetryDelay,()=>this._disposed);if(!s.ok)throw new Error(`Error fetching ${String(this._url)}: ${s.status} ${s.statusText}`);if(!s.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");t=s.body.getReader(),r=206===s.status?0:i;continue}if(s.done)return void e.close();let n=s.value;if(r>0){const e=Math.min(r,n.length);r-=e,n=n.subarray(e)}if(0!==n.length)return i+=n.length,void e.enqueue(n)}},cancel:()=>t.cancel()}),s=new fs(a,{maxCacheSize:this._orchestrator.options.maxCacheSize,handleUnhandledError:this._options.handleUnhandledError});s._endIndex=this._orchestrator.fileSize,s._cacheMissErrorMessage="Attempted to read data from an already-evicted part of the cache. Because the HTTP server did not honor the range request, data can only be read sequentially, with old data being evicted from the cache. To fix this issue, either ensure your server responds to range requests with 206 Partial Content, or set maxCacheSize to Infinity in the UrlSource options. Note that the latter will store the entire file in the cache if needed, no matter how large.",s.on("read",({start:e,end:t})=>this._dispatchRead(e,t)),this._sequentialBacking=s;const n=new Set;for(const o of this._orchestrator.workers){for(const e of o.pendingSlices)n.add(e);o.aborted=!0,o.pendingSlices.length=0}for(const o of this._orchestrator.queuedReads)for(const e of o.pendingSlices)n.add(e);this._orchestrator.workers.length=0,this._orchestrator.queuedReads.length=0;for(const o of n){const e=s._read(o.start,o.start+o.bytes.length);de(e)?e.then(e=>{e?(l(e.offset===o.start),o.resolve(e.bytes)):o.resolve(null)},e=>o.reject(e)):(l(null===e),o.resolve(null))}}_dispose(){this._orchestrator.dispose(),this._sequentialBacking&&(this._sequentialBacking._disposed=!0,this._sequentialBacking._dispose())}}const ds=/^bytes=(\d+)-(\d*)$/,hs=e=>{const t=ds.exec(e.trim());if(!t)return null;const i=Number(t[1]),r=""===t[2]?null:Number(t[2]);return null!==r&&rthis._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const i=A(this._cache,e,e=>e.start),r=-1!==i?this._cache[i]:null;if(r&&r.start<=e&&t<=r.end)return{bytes:r.bytes,view:r.view,offset:r.start};let a=e;const s=new Uint8Array(t-e);if(-1!==i)for(let l=i;l=t)break;const r=Math.max(e,i.start);r>a&&this._throwDueToCacheMiss();const n=Math.min(t,i.end);ra&&this._throwDueToCacheMiss();const{promise:n,resolve:o,reject:c}=M();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:c}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0;else{if(!this._handleUnhandledError)throw e;this._handleUnhandledError(e)}})),n}_throwDueToCacheMiss(){throw new Error(this._cacheMissErrorMessage)}async _pull(){for(this._reader??(this._reader=this._stream.getReader());this._currentIndex0;){const e=this._cache[0];if(this._maxRequestedIndex-e.end<=this._maxCacheSize)break;this._cache.shift()}this._currentIndex+=t.byteLength}this._pulling=!1}_dispose(){for(const e of this._pendingSlices)e.reject(new ko);this._pendingSlices.length=0,this._cache.length=0,this._reader?.cancel()}}const ms={fileSystem:(e,t)=>{const i=65536;return{start:e=Math.floor((e-i)/i)*i,end:t=Math.ceil((t+i)/i)*i}},network:(e,t,i)=>{const r=65536;e=Math.max(0,Math.floor((e-r)/r)*r);for(const a of i){const i=8388608,r=Math.max((a.startPos+a.targetPos)/2,a.targetPos-i);if(fe(e,t,r,a.targetPos)){const e=a.targetPos-a.startPos,r=Math.ceil((e+1)/i)*i,s=2**Math.ceil(Math.log2(e+1)),n=Math.min(s,r);t=Math.max(t,a.startPos+n)}}return{start:e,end:t=Math.max(t,e+524288)}}};class ps{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1,this.queuedReads=[]}read(e,t,i,r){l(!this.disposed);const a=this.options.prefetchProfile(e,t,this.workers),s=Math.max(a.start,i),n=Math.min(a.end,this.fileSize??1/0,r);l(s<=e&&t<=n);let o=null;const c=A(this.cache,e,e=>e.start),u=-1!==c?this.cache[c]:null;u&&u.start<=e&&t<=u.end&&(u.age=this.nextAge++,o={bytes:u.bytes,view:u.view,offset:u.start});const d=A(this.cache,s,e=>e.start),h=o?null:new Uint8Array(t-e);let f=0,m=s;const p=[];if(-1!==d){for(let i=d;i=n)break;if(r.end<=s)continue;const a=Math.max(s,r.start),o=Math.min(n,r.end);if(l(a<=o),m=h.length&&(o={bytes:h,view:g(h),offset:e}),0===p.length)return l(o),o;const{promise:k,resolve:y,reject:b}=M(),w=[];for(const l of p){const i=Math.max(e,l.start),r=Math.min(t,l.end);i===l.start&&r===l.end?w.push(l):ie.hole.start),i=-1!==t?this.queuedReads[t]:null;for(i&&l.start<=i.hole.end?(i.hole.end=Math.max(i.hole.end,l.end),i.strictTarget&&(i.strictTarget=e),T&&i.pendingSlices.push(T)):(t++,i={hole:{start:l.start,end:l.end},strictTarget:e,pendingSlices:T?[T]:[],age:this.nextAge++},this.queuedReads.splice(t,0,i));t+1i.hole.end)break;i.hole.end=Math.max(i.hole.end,e.hole.end),i.pendingSlices.push(...e.pendingSlices),i.strictTarget&&(i.strictTarget=e.strictTarget),i.age=Math.min(i.age,e.age),this.queuedReads.splice(t+1,1)}}}return o?k.catch(e=>{if(!this.disposed){if(!this.options.handleUnhandledError)throw e;this.options.handleUnhandledError(e)}}):(l(h),o=k.then(t=>t&&{bytes:t,view:g(t),offset:e})),o}checkHoleAgainstWorker(e,t,i){if(fe(t.start-2**17,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end);for(let t=0;t=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i{if(e.running=!1,e.pendingSlices.length>0)e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0;else if(!e.aborted&&!this.disposed){if(!this.options.handleUnhandledError)throw t;this.options.handleUnhandledError(t)}}).finally(()=>{if(!e.running&&this.queuedReads.length>0){let e=0;for(let r=1;re.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;at.start&&(t.start=r),t.end<=t.start&&(s.holes.splice(e,1),e--)}0===s.holes.length&&(s.resolve(s.bytes),e.pendingSlices.splice(a,1),a--)}for(let a=0;ae){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t=e){for(const e of i.pendingSlices)e.resolve(null);this.queuedReads.splice(t,1),t--}else if(i.hole.end>e){i.hole.end=e,i.strictTarget=!0;for(let t=0;t=e&&(r.resolve(null),i.pendingSlices.splice(t,1),t--)}}}}signalWorkerStoppedRunning(e){e.running=!1,e.aborted||(e.pendingSlices.length=0)}onWorkerFinished(e){const t=this.workers.indexOf(e);l(-1!==t),e.running=!1,this.workers.splice(t,1),this.options.onIdleWorkerRemoved?.(e),null===this.fileSize&&this.supplyFileSize(e.currentPos);for(const i of e.pendingSlices)i.resolve(null)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=A(this.cache,e.start,e=>e.start)+1;if(t>0){const i=this.cache[t-1];if(i.end>=e.end)return;if(i.end>e.start){const r=new Uint8Array(e.end-i.start);r.set(i.bytes,0),r.set(e.bytes,e.start-i.start),this.currentCacheSize+=e.end-i.end,i.bytes=r,i.view=g(r),i.end=e.end,t--,e=i}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let i=t+1;i=t.end){this.cache.splice(i,1),this.currentCacheSize-=t.bytes.length,i--;continue}const r=new Uint8Array(t.end-e.start);r.set(e.bytes,0),r.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=r,e.view=g(r),e.end=t.end,this.cache.splice(i,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let i=1;ithis._length)return null;const a=this._baseSource._read(this._offset+e,this._offset+t,this._offset+i,this._offset+r),s=e=>e?(e.offset-=this._offset,e):null;return de(a)?a.then(s):s(a)}_dispose(){this._ref?.free()}ref(){return this._ref??(this._ref=this._baseSource.ref()),super.ref()}}var ks=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,a;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(a=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");a&&(r=function(){try{a.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t},ys=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,a=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===a)return a=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return a|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else a|=1}catch(n){i(n)}if(1===a)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});const bs=/^0[xX][0-9a-fA-F]+$/,ws=/^data:.*;base64,/i;class Ts extends Qa{constructor(e,t,i,r){super(e.input,t,i),this.segments=[],this.nextLines=null,this.currentUpdateSegmentsPromise=null,this.streamHasEnded=!1,this.lastSegmentUpdateTime=-1/0,this.refreshInterval=5,this.rootPath=t,this.demuxer=e,this.nextLines=r}runUpdateSegments(){return this.currentUpdateSegmentsPromise??(this.currentUpdateSegmentsPromise=(async()=>{try{const e=this.getRemainingWaitTimeMs();e>0&&await Se(e),this.lastSegmentUpdateTime=performance.now(),await this.updateSegments()}finally{this.currentUpdateSegmentsPromise=null}})())}getRemainingWaitTimeMs(){const e=performance.now()-this.lastSegmentUpdateTime,t=Math.max(0,1e3*this.refreshInterval-e);return t<=50?0:t}async updateSegments(){let e=this.nextLines;if(this.nextLines=null,!e){const t={stack:[],error:void 0,hasError:!1};try{const i=ks(t,await this.demuxer.input._getSourceUncached({path:this.rootPath,isRoot:!1}),!1),r=new yo(i.source),a=await r.requestEntireFile();l(a),e=Lo(a,a.length,{ignore:$a}),i.source instanceof rs&&(this.rootPath=i.source.rootPath)}catch(T){t.error=T,t.hasError=!0}finally{ys(t)}}const t=!1!==this.input._formatOptions.hls?.offsetTimestampsByDateTime;let i=!1,r=0,a=null,s=null,n=null,o=0,c=null,u=null,h=null,f=null,m=null,p=null,k=!1,y=d(this.segments)??null;const b=e=>{const t=e.indexOf("@"),i=Number(-1===t?e:e.slice(0,t));if(!Number.isInteger(i)||i<0)throw new Error(`Invalid #EXT-X-BYTERANGE length '${e}'.`);let r=null;if(-1!==t&&(r=Number(e.slice(t+1)),!Number.isInteger(r)||r<0))throw new Error(`Invalid #EXT-X-BYTERANGE offset '${e}'.`);return{length:i,offset:r}},w=e=>{o=e,y&&(l(null!==y.sequenceNumber),y.sequenceNumber0&&null!==p&&(r=o*p),k=!0);const e=T.slice(8),t=e.indexOf(","),i=-1===t?e:e.slice(0,t),a=Number(i);if(!Number.isFinite(a)||a<0)throw new Error(`Invalid #EXTINF tag duration '${i}'.`);s=a}else if(T.startsWith(qa)){const e=new Ga(T.slice(11)),t=e.get("uri");if(!t)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");const i=e.get("byterange");let o=null;if(null!==i&&(o=b(i)),o&&null===o.offset)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!y){const e={path:ke(this.rootPath,t),offset:o?.offset??0,length:o?.length??null};if("AES-128"===n?.method&&!n.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");u={timestamp:r,unixEpochTimestamp:a,firstSegment:null,sequenceNumber:null,location:e,duration:0,encryption:n,initSegment:null,lastProgramDateTimeSeconds:m}}s=null,null===f?h=null:f=null}else if(T.startsWith(Wa)){const e=new Ga(T.slice(11)),t=e.get("method");if("NONE"===t)n=null;else if("AES-128"===t){const t=e.get("uri");if(!t)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let i=null;const r=e.get("iv");if(r){if(!bs.test(r))throw new Error(`Unsupported IV format '${r}'.`);let e=r.slice(2);e=e.padStart(32,"0"),i=new Uint8Array(Ri);for(let t=0;t=8&&112===t[4]&&115===t[5]&&115===t[6]&&104===t[7]){const e=g(t).getUint32(0);r=vi(t.subarray(8,Math.min(e,t.length)))}}n={method:t,psshBox:r}}}}else if(T.startsWith(Ha)){const e=T.slice(22),t=Number(e);if(!Number.isInteger(t)||t<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${e}'.`);w(t)}else if(T.startsWith(Va)){const e=b(T.slice(17));if(null===e.offset){if(null===h)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");e.offset=h}f=e,h=e.offset+e.length}else if(T.startsWith(ja)){if(y)continue;const e=T.slice(25),i=Date.parse(e);if(!Number.isFinite(i))continue;const s=i/1e3;if(m===s)continue;if(null===m&&this.segments.length>0){const e=d(this.segments),i=s-(e.timestamp+e.duration);for(const r of this.segments)r.unixEpochTimestamp=r.timestamp+i,t&&(r.timestamp=r.unixEpochTimestamp)}m=s,a=s,t&&(r=s)}else if("#EXT-X-DISCONTINUITY"===T)c=null;else if(T.startsWith(Ka)){const e=T.slice(22),t=Number(e);if(!Number.isFinite(t)||t<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${e}'.`);this.refreshInterval=t,p=t}else{if("#EXT-X-ENDLIST"===T){this.streamHasEnded=!0;break}if(T.startsWith(Xa)){"vod"===T.slice(21).toLowerCase()&&(this.streamHasEnded=!0)}}}else{if("#EXTM3U"!==T)throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");i=!0}}if(!i)throw new Error("Invalid M3U8 file; no #EXTM3U header.")}async getFirstSegment(){return 0===this.segments.length&&await this.runUpdateSegments(),this.segments[0]??null}async getSegmentAt(e,t){0===this.segments.length&&await this.runUpdateSegments();let i=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){const r=A(this.segments,e,e=>e.timestamp);if(-1===r)return null;if(r0;for(;;){if(re.segment===t);if(i)return i.age=this.nextInputCacheAge++,i.input;let r=null;(t.initSegment||t.firstSegment)&&(r=this.getInputForSegment(t.initSegment??t.firstSegment));const a={...this.input._formatOptions,isobmff:{...this.input._formatOptions.isobmff,resolveKeyId:this.input._formatOptions.isobmff?.resolveKeyId&&(e=>{if(!t.encryption||"SAMPLE-AES"!==t.encryption.method&&"SAMPLE-AES-CTR"!==t.encryption.method||!t.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(e);let i=e.psshBoxes;const{psshBox:r}=t.encryption;return null!==r.keyIds&&!r.keyIds.includes(e.keyId)||i.some(e=>Pi(e,r))||(i=[...i,r]),this.input._formatOptions.isobmff.resolveKeyId({...e,psshBoxes:i})})}},s=new po({source:new ss(t.location.path,async e=>{l(e.isRoot);const i={...e,isRoot:!1};let r;const a=t.location.offset>0||null!==t.location.length;if(t.encryption&&"SAMPLE-AES"!==t.encryption.method&&"SAMPLE-AES-CTR"!==t.encryption.method)if("AES-128"===t.encryption.method){const e=t.encryption;l(e.iv);let s=await this.input._getSourceCached(i);if(a){const e=s.source.slice(t.location.offset,t.location.length??void 0).ref();s.free(),s=e}const n=((e,t,i)=>{let r=!1,a=0;const s=new Ui;return new ReadableStream({pull:async n=>{r||(s.init(await t()),r=!0);let o=e.requestSliceRange(a,0,65552);if(de(o)&&(o=await o),!o||0===o.length)throw new Error("Invalid ciphertext.");const c=o.length;if(c%16!==0)throw new Error("Invalid ciphertext.");const l=65552===c?c-16:c,u=To(o,l),d=new Uint8Array(l);for(let e=0;e16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");const t=d.subarray(0,l-e);n.enqueue(t),n.close(),i()}},cancel:()=>{i()}})})(new yo(s.source),async()=>{const t={stack:[],error:void 0,hasError:!1};try{const i=ks(t,await this.input._getSourceCached({path:e.keyUri,isRoot:!1},mo),!1),r=new yo(i.source),a=await r.requestSlice(0,Ri);if(!a)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");return{key:To(a,Ri),iv:e.iv}}catch(i){t.error=i,t.hasError=!0}finally{ys(t)}},()=>{s.free()});r=new fs(n).ref()}else l(!1);else if(r=await this.input._getSourceCached(i),a){const e=r.source.slice(t.location.offset,t.location.length??void 0).ref();r.free(),r=e}return r}),formats:this.input._formats.filter(e=>!(e instanceof qs)),initInput:r??void 0,formatOptions:a});s._onFormatDetermined=e=>{if(("SAMPLE-AES"===t.encryption?.method||"SAMPLE-AES-CTR"===t.encryption?.method)&&!e._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:t,input:s,age:this.nextInputCacheAge++});if(this.inputCache.length>4){const e=be(this.inputCache,e=>e.age);l(-1!==e),this.inputCache.splice(e,1)}return s}async getLiveRefreshInterval(){return 0===this.getRemainingWaitTimeMs()&&await this.runUpdateSegments(),this.streamHasEnded?null:this.refreshInterval}}class Ss extends wi{constructor(e){super(e),this.metadataPromise=null,this.trackBackings=null,this.internalTracks=null,this.segmentedInputs=[],this.hasMasterPlaylist=!0}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{l(this.input._rootSource instanceof rs);const e=await this.input._reader.requestEntireFile();l(e);const t=Lo(e,e.length,{ignore:$a}),{rootPath:i}=this.input._rootSource,r=[],a=[];for(let l=1;l"video"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],n=[...new Set(a.filter(e=>"audio"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],o=await Promise.all(r.map(async(e,t)=>{const r=[],o=e.attributes.get("codecs");let c;if(o)c=o.split(",").map(e=>e.trim());else{const t=this.getSegmentedInputForPath(e.fullPath),i=await t.getTrackBackings(),r=await Promise.all(i.map(async e=>({track:e,codec:await e.getCodec()})));c=await Promise.all(r.filter(e=>null!==e.codec).map(e=>e.track.getDecoderConfig().then(e=>e.codec)))}const u=e.attributes.get("video"),d=e.attributes.get("audio"),h=c.some(e=>$t.includes(li(e))),f=c.some(e=>Qt.includes(li(e)));if(null!==u&&!h){if(!s.includes(u))throw new Error(`Invalid M3U8 file; variant stream references video group "${u}" which is not defined in any #EXT-X-MEDIA tags.`);const e=a.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===u&&"video"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=ke(i,t),a=this.getSegmentedInputForPath(r),s=(await a.getTrackBackings()).find(e=>"video"===e.getType());if(!s||null===await s.getCodec())break e;const n=await s.getDecoderConfig().then(e=>e?.codec??null);l(null!==n),c.push(n)}}if(null!==d&&!f){if(!n.includes(d))throw new Error(`Invalid M3U8 file; variant stream references audio group "${d}" which is not defined in any #EXT-X-MEDIA tags.`);const e=a.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===d&&"audio"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=ke(i,t),a=this.getSegmentedInputForPath(r),s=(await a.getTrackBackings()).find(e=>"audio"===e.getType());if(!s||null===await s.getCodec())break e;const n=await s.getDecoderConfig().then(e=>e?.codec??null);l(null!==n),c.push(n)}}c=[...new Set(c)];let m=null,p=null;const g=e.attributes.getAsNumber("bandwidth");l(null!==g);const k=e.attributes.getAsNumber("average-bandwidth"),y=e.attributes.get("name");for(const i of c){const o=li(i);if(null!==o)if($t.includes(o)){if(null!==m)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");m=i;const n=e.attributes.get("video");if(null===n){const i=e.attributes.get("resolution");let a=null,s=null;if(i){const e=i.match(/^(\d+)x(\d+)$/);e&&(a=Number(e[1]),s=Number(e[2]))}r.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:V,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:m,pairingMask:1n<0?a:null}})}else{if(!n.includes(s))throw new Error(`Invalid M3U8 file; variant stream references audio group "${s}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of a){const a=i.attributes.get("group-id"),n=i.attributes.get("type");if(a!==s||"audio"!==n.toLowerCase())continue;const o=i.attributes.get("channels")??e.attributes.get("channels"),c=null!==o?Number(o.split("/")[0]):null;r.push({id:-1,demuxer:this,backingTrack:null,default:xs(i.attributes),autoselect:xs(i.attributes)||Cs(i.attributes),languageCode:Bs(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:i.fullPath??e.fullPath,fullCodecString:p,pairingMask:1n<0?c:null}})}}}}return r})),c=[],u=e=>{const t=c.find(t=>t.fullPath===e.fullPath&&t.info.type===e.info.type);t?(t.pairingMask|=e.pairingMask,t.default||(t.default=e.default),t.autoselect||(t.autoselect=e.autoselect),t.lineNumber=Math.min(t.lineNumber,e.lineNumber),null!==e.peakBitrate&&(t.peakBitrate=Math.max(t.peakBitrate??-1/0,e.peakBitrate)),null!==e.averageBitrate&&(t.averageBitrate=Math.max(t.averageBitrate??-1/0,e.averageBitrate)),t.languageCode===V&&(t.languageCode=e.languageCode)):(e.id=c.length+1,c.push(e))};for(const l of o)for(const e of l)u(e);c.sort((e,t)=>e.lineNumber-t.lineNumber),this.trackBackings=[];for(const l of c)"video"===l.info.type?this.trackBackings.push(new Ps(l)):this.trackBackings.push(new Is(l));this.internalTracks=c})())}async getTrackBackings(){return await this.readMetadata(),l(this.trackBackings),this.trackBackings}getSegmentedInputForPath(e){let t=this.segmentedInputs.find(t=>t.path===e);if(t)return t;let i=null;if(this.internalTracks){i=this.internalTracks.filter(t=>t.fullPath===e).map(e=>({id:e.id,type:e.info.type}))}return t=new Ts(this,e,i,null),this.segmentedInputs.push(t),t}async getMetadataTags(){return{}}async getMimeType(){return Na}dispose(){if(this.segmentedInputs){for(const e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}}class vs{constructor(e){this.internalTrack=e,this.hydrationPromise=null}hydrate(){return this.hydrationPromise??(this.hydrationPromise=(async()=>{const e=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath);let t=null;const i=(await e.getTrackBackings()).filter(e=>e.getType()===this.getType());if(1===i.length)t=i[0];else if(this instanceof Ps){for(const r of i)if(await r.getCodec()===this.getCodec()){t=r;break}}else{l(this instanceof Is);for(const e of i)if(await e.getCodec()===this.getCodec()){t=e;break}}if(!t)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=t})())}delegate(e){return this.internalTrack.backingTrack?e():this.hydrate().then(e)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return{...Ee,default:this.internalTrack.autoselect,primary:this.internalTrack.default}}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){l(this.internalTrack.demuxer.internalTracks);const e=this.internalTrack.info.type;let t=0;for(const i of this.internalTrack.demuxer.internalTracks)if(i.info.type===e&&t++,i===this.internalTrack)break;return t}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getUnixTimeForTimestamp(e){return this.delegate(()=>this.internalTrack.backingTrack.getUnixTimeForTimestamp(e))}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}async getDurationFromMetadata(e){return await this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(e)}async getLiveRefreshInterval(){return await this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}async getFirstPacket(e){return await this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(e)}async getPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getPacket(e,t)}async getKeyPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(e,t)}async getNextPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getNextPacket(e,t)}async getNextKeyPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(e,t)}}class Ps extends vs{constructor(e){super(e)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return li(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}async getColorSpace(){return await this.hydrate(),this.backingVideoTrack.getColorSpace()}async canBeTransparent(){return await this.hydrate(),this.backingVideoTrack.canBeTransparent()}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingVideoTrack.getDecoderConfig()}}class Is extends vs{constructor(e){super(e)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return li(this.internalTrack.fullCodecString)}getNumberOfChannels(){return null!==this.internalTrack.info.numberOfChannels?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingAudioTrack.getDecoderConfig()}}const xs=e=>{const t=e.get("default");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},Cs=e=>{const t=e.get("autoselect");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},Bs=e=>{if(null===e)return V;const t=e.split("-")[0];return t||V};class Es{constructor(){this._isIsobmff=!1}}class _s extends Es{constructor(){super(...arguments),this._isIsobmff=!0}async _getMajorBrand(e){let t=e._reader.requestSlice(0,12);if(de(t)&&(t=await t),!t)return null;t.skip(4);const i=Oo(t,4);return"ftyp"!==i&&"styp"!==i?null:Oo(t,4)}_createDemuxer(e){return new qi(e)}}class Rs extends _s{async _canReadInput(e){const t=await this._getMajorBrand(e);if(null!==t)return"qt "!==t;let i=0;for(let r=0;r<10;r++){let t=e._reader.requestSlice(i,8);if(de(t)&&(t=await t),!t)return!1;let r=Bo(t),a=8;if(1===r){let t=e._reader.requestSlice(i+8,8);if(de(t)&&(t=await t),!t)return!1;r=Fo(t),a=16}if(r8)return!1;if(fr(i,r)!==sr.EBML)return!1;const a=pr(i);if("number"!==typeof a)return!1;let s=e._reader.requestSlice(i.filePos,a);if(de(s)&&(s=await s),!s)return!1;const n=i.filePos;for(;s.filePos<=n+a-2;){const e=gr(s);if(!e)break;const{id:i,size:r}=e,a=s.filePos;if(void 0===r)return!1;switch(i){case sr.EBMLVersion:if(1!==fr(s,r))return!1;break;case sr.EBMLReadVersion:if(1!==fr(s,r))return!1;break;case sr.DocType:if(kr(s,r)!==t)return!1;break;case sr.DocTypeVersion:if(fr(s,r)>4)return!1}s.filePos=a+r}return!0}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new jr(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class Ds extends As{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class Ms extends Es{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,Vo);if(de(i)&&(i=await i),!i)break;const r=$o(i);if(!r)break;t=i.filePos+r.size}const i=await Gr(e._reader,t,t+4096);if(!i)return!1;const r=i.header,a=mi(r.mpegVersionId,r.channel);let s=e._reader.requestSlice(i.startPos+a,4);if(de(s)&&(s=await s),!s)return!1;const n=Bo(s);if(n===hi||n===fi)return!0;t=i.startPos+i.header.totalSize;const o=await Gr(e._reader,t,t+4);if(!o)return!1;const c=o.header;return r.channel===c.channel&&r.sampleRate===c.sampleRate}_createDemuxer(e){return new Qr(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class Ns extends Es{async _canReadInput(e){let t=e._reader.requestSlice(0,12);if(de(t)&&(t=await t),!t)return!1;const i=Oo(t,4);if("RIFF"!==i&&"RIFX"!==i&&"RF64"!==i)return!1;t.skip(4);return"WAVE"===Oo(t,4)}_createDemuxer(e){return new ha(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class Os extends Es{async _canReadInput(e){let t=e._reader.requestSlice(0,4);return de(t)&&(t=await t),!!t&&"OggS"===Oo(t,4)}_createDemuxer(e){return new na(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class Ls extends Es{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,Vo);if(de(i)&&(i=await i),!i)break;const r=$o(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSlice(t,4);return de(i)&&(i=await i),!!i&&"fLaC"===Oo(i,4)}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new ba(e)}}class zs extends Es{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,Vo);if(de(i)&&(i=await i),!i)break;const r=$o(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSliceRange(t,7,9);if(de(i)&&(i=await i),!i)return!1;const r=pa(i);if(!r)return!1;if(t+=r.frameLength,i=e._reader.requestSliceRange(t,7,9),de(i)&&(i=await i),!i)return!1;const a=pa(i);return!!a&&(r.objectType===a.objectType&&r.samplingFrequencyIndex===a.samplingFrequencyIndex&&r.channelConfiguration===a.channelConfiguration)}_createDemuxer(e){return new ka(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}class Us extends Es{async _canReadInput(e){let t=e._reader.requestSlice(0,205);if(de(t)&&(t=await t),!t)return!1;const i=To(t,205);return 71===i[0]&&71===i[188]||(71===i[0]&&71===i[204]||71===i[4]&&71===i[196])}_createDemuxer(e){return new Ca(e)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}}class qs extends Es{async _canReadInput(e){let t=e._reader.requestSlice(0,7);if(de(t)&&(t=await t),!t)return!1;if(!("#EXTM3U"===Oo(t,7)))return!1;if(!(e._rootSource instanceof rs))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return e._rootSource._usedForHls=!0,!0}_createDemuxer(e){return new Ss(e)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return Na}}const Ws=new Rs,Hs=new Fs,Vs=new As,js=new Ds,Ks=new Ms,Xs=new Ns,$s=new Os,Gs=new zs,Qs=new Ls,Ys=new Us,Js=new qs,Zs=[Js,Ws,Hs,Vs,js,Xs,$s,Qs,Ks,Gs,Ys],en=[Js,Ws,Hs,Ks,Gs,Ys];var tn=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,a=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===a)return a=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return a|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else a|=1}catch(n){i(n)}if(1===a)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});pe();let rn=-1/0,an=-1/0,sn=null;"undefined"!==typeof FinalizationRegistry&&(sn=new FinalizationRegistry(e=>{const t=performance.now();"video"===e.type?(t-rn>=1e3&&(xe._error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),rn=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-an>=1e3&&(xe._error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),an=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));class nn{constructor(){this._referenceCount=0,this._lastAllocationBuffer=null}}const on=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],cn=new Set(on);class ln{get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(J*this.timestamp)}get microsecondDuration(){return Math.trunc(J*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0===t.format||!cn.has(t.format))throw new TypeError("init.format must be one of: "+on.join(", "));if(!Number.isInteger(t.codedWidth)||t.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(t.codedHeight)||t.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.layout){if(!Array.isArray(t.layout))throw new TypeError("init.layout, when provided, must be an array.");for(const e of t.layout){if(!e||"object"!==typeof e||Array.isArray(e))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(e.offset)||e.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(e.stride)||e.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==t.visibleRect&&Te(t.visibleRect,"init.visibleRect"),void 0!==t.displayWidth&&(!Number.isInteger(t.displayWidth)||t.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(void 0!==t.displayHeight&&(!Number.isInteger(t.displayHeight)||t.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(void 0!==t.displayWidth!==(void 0!==t.displayHeight))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this.format=t.format,this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0;const i=t.layout??bn(t.format,t.codedWidth,t.codedHeight);let r=t.colorSpace??null;null===r&&(r="RGBA"===this.format||"RGBX"===this.format||"BGRA"===this.format||"BGRX"===this.format?{primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:{primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.visibleRect={left:t.visibleRect?.left??0,top:t.visibleRect?.top??0,width:t.visibleRect?.width??t.codedWidth,height:t.visibleRect?.height??t.codedHeight},void 0!==t.displayWidth?(this.squarePixelWidth=this.rotation%180===0?t.displayWidth:t.displayHeight,this.squarePixelHeight=this.rotation%180===0?t.displayHeight:t.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height),this._data=t._doNotCopy?p(e):p(e).slice(),this._layout=i,this.colorSpace=new mn(r)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==t?.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==t?.timestamp&&!Number.isFinite(t?.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==t?.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");void 0!==t?.visibleRect&&Te(t.visibleRect,"init.visibleRect"),this._data=e,this._layout=null,this.format=e.format,this.visibleRect={left:e.visibleRect?.x??0,top:e.visibleRect?.y??0,width:e.visibleRect?.width??e.codedWidth,height:e.visibleRect?.height??e.codedHeight},this.rotation=t?.rotation??0,this.squarePixelWidth=e.displayWidth,this.squarePixelHeight=e.displayHeight,this.timestamp=t?.timestamp??e.timestamp/1e6,this.duration=t?.duration??(e.duration??0)/1e6,this.colorSpace=new mn(e.colorSpace)}else if("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.visibleRect&&Te(t.visibleRect,"init.visibleRect"),"undefined"!==typeof VideoFrame)return new ln(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*J),duration:Math.trunc((t.duration??0)*J)||void 0,visibleRect:t.visibleRect&&{x:t.visibleRect.left,y:t.visibleRect.top,width:t.visibleRect.width,height:t.visibleRect.height}}),t);let i=0,r=0;if("naturalWidth"in e?(i=e.naturalWidth,r=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,r=e.videoHeight):"width"in e&&(i=Number(e.width),r=Number(e.height)),!i||!r)throw new TypeError("Could not determine dimensions.");const a=t.visibleRect??{left:0,top:0,width:i,height:r},s=new OffscreenCanvas(a.width,a.height),n=s.getContext("2d",{alpha:ne(),willReadFrequently:!0});if(!n)throw new Error("OffscreenCanvas must have support for the '2d' context in order to create a VideoSample from this data.");n.drawImage(e,-a.left,-a.top),this._data=s,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:a.width,height:a.height},this.squarePixelWidth=a.width,this.squarePixelHeight=a.height,this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0,this.colorSpace=new mn({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else{if(!(e instanceof nn))throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(this._data=e,e._referenceCount++,this.format=e.getFormat(),null!==this.format&&!on.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:e.getCodedWidth(),height:e.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=e.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=e.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0,this.colorSpace=e.getColorSpace()}this.encodeOptions=t?.encodeOptions??{},this.pixelAspectRatio=we({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),sn?.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return l(null!==this._data),this._data instanceof nn?new ln(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):pn(this._data)?new ln(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):this._data instanceof Uint8Array?(l(this._layout),new ln(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions,_doNotCopy:!0})):new ln(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions})}close(){this._closed||(sn?.unregister(this),this._data instanceof nn?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):pn(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){if(yn(e),this._closed)throw new Error("VideoSample is closed.");if(null==(e.format??this.format))throw new Error("Cannot get allocation size when format is null.");if(pn(this._data))return this._data.allocationSize(e);return Tn(this,e).allocationSize}async copyTo(e,t={}){if(!C(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(yn(t),this._closed)throw new Error("VideoSample is closed.");if(null==(t.format??this.format))throw new Error("Cannot copy video sample data when format is null.");if(l(null!==this._data),pn(this._data))return this._data.copyTo(e,t);if(t.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(t.format)){if(!(this._data instanceof nn)){if("undefined"===typeof VideoFrame)throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");const i=this.toVideoFrame(),r=await i.copyTo(e,t);return i.close(),r}{const i={stack:[],error:void 0,hasError:!1};try{const r=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,a;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(a=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");a&&(r=function(){try{a.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t}(i,await this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},t.colorSpace??"srgb"),!1);if(!(r instanceof ln))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(r.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${r.format}' instead.`);return await r.copyTo(e,t)}catch(c){i.error=c,i.hasError=!0}finally{tn(i)}}}const i=Tn(this,t);l(this.format);const r=p(e);if(r.byteLength!(e.data instanceof Uint8Array)||!Number.isInteger(e.stride)||e.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');s=e}else if(this._data instanceof Uint8Array)l(this._layout),l(this._layout.length===a.length),s=this._layout.map((e,t)=>{const i=Math.ceil(this.codedHeight/a[t].heightDivisor);return{data:this._data.subarray(e.offset,e.offset+e.stride*i),stride:e.stride}});else{const e=this._data.getContext("2d");l(e);const t=e.getImageData(0,0,this.codedWidth,this.codedHeight);s=[{data:p(t.data),stride:4*this.codedWidth}]}const n=[],o=a.length;for(let l=0;la.byteLength)throw new Error("Source buffer OOB read.");if(c+u>r.byteLength)throw new Error("Destination buffer OOB write.");const i=a.subarray(o,o+u);r.set(i,c),o+=t,c+=e.destinationStride}n.push(d)}if(void 0!==t.format){const e=this.format.startsWith("RGB")!==t.format.startsWith("RGB"),a=this.format.includes("X")&&t.format.includes("A");if(e||a)for(let t=0;te+t.data.byteLength,0),i=new Uint8Array(t);let r=0;const a=[];for(const s of e)i.set(s.data,r),a.push(r),r+=s.data.byteLength;return new VideoFrame(i,{format:this.format,layout:e.map((e,t)=>({offset:a[t],stride:e.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}return pn(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?(l(this._layout),new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,layout:this._layout,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,i,r,a,s,n,o,c){let l=0,u=0,d=this.displayWidth,h=this.displayHeight,f=0,m=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(l=t,u=i,d=r,h=a,f=s,m=n,void 0!==o?(p=o,g=c):(p=d,g=h)):(f=t,m=i,void 0!==r&&(p=r,g=a)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(l))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(f))throw new TypeError("dx must be a number.");if(!Number.isFinite(m))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:l,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(l,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const y=f+p/2,b=m+g/2;e.translate(y,b),e.rotate(this.rotation*Math.PI/180);const w=this.rotation%180===0?1:p/g;e.scale(1/w,w),e.drawImage(k,l,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&kn(t.crop,"options.");const i=e.canvas.width,r=e.canvas.height,a=t.rotation??this.rotation,[s,n]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let o,c,l,u,d=t.crop;d&&(d=gn(d,s,n));const{sx:h,sy:f,sWidth:m,sHeight:p}=this._rotateSourceRegion(t.crop?.left??0,t.crop?.top??0,t.crop?.width??s,t.crop?.height??n,a);if("fill"===t.fit)o=0,c=0,l=i,u=r;else{const[e,a]=t.crop?[t.crop.width,t.crop.height]:[s,n],d="contain"===t.fit?Math.min(i/e,r/a):Math.max(i/e,r/a);l=e*d,u=a*d,o=(i-l)/2,c=(r-u)/2}e.save();const g=a%180===0?1:l/u;e.translate(i/2,r/2),e.rotate(a*Math.PI/180),e.scale(1/g,g),e.translate(-i/2,-r/2),e.drawImage(this.toCanvasImageSource(),h,f,m,p,o,c,l,u),e.restore()}_rotateSourceRegion(e,t,i,r,a){return 90===a?[e,t,i,r]=[t,this.squarePixelHeight-e-i,r,i]:180===a?[e,t]=[this.squarePixelWidth-e-i,this.squarePixelHeight-t-r]:270===a&&([e,t,i,r]=[this.squarePixelWidth-t-r,e,r,i]),{sx:e,sy:t,sWidth:i,sHeight:r}}_drawWithFitAndMipmapping(e,t,i){const r=e.width,a=e.height,[s,n]=i.rotation%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],o=i.crop?i.crop.width:s,c=i.crop?i.crop.height:n;let l=0;2*r0?fn(u,d):{canvas:e,context:t,isNew:i.targetIsFresh};f.imageSmoothingQuality="high",i.fillBlack?(f.fillStyle="black",f.fillRect(0,0,u,d)):m||f.clearRect(0,0,u,d),this.drawWithFit(f,{fit:i.fit,rotation:i.rotation,crop:i.crop}),f.globalCompositeOperation="copy";for(let p=l;p>1;p--){const e=r*2**p,t=a*2**p;f.drawImage(h,0,0,e,t,0,0,e/2,t/2)}f.globalCompositeOperation="source-over",l>0&&(t.imageSmoothingQuality="high",t.globalCompositeOperation="copy",t.drawImage(h,0,0,2*r,2*a,0,0,r,a),t.globalCompositeOperation="source-over")}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(l(null!==this._data),this._data instanceof nn||this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}async transform(e){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.width&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(void 0!==e.height&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(void 0!==e.roundDimensionsTo&&(!Number.isInteger(e.roundDimensionsTo)||e.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(void 0!==e.fit&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==e.width&&void 0!==e.height&&void 0===e.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==e.rotate&&![0,90,180,270].includes(e.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(void 0!==e.crop&&kn(e.crop,"options."),void 0!==e.alpha&&!["keep","discard"].includes(e.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");const t=u(this.rotation+(e.rotate??0)),[i,r]=t%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let a=e.crop;a&&(a=gn(a,i,r));const s=a?a.width:i,n=a?a.height:r,o=s/n;let c,l;void 0!==e.width&&void 0===e.height?(c=e.width,l=c/o):void 0===e.width&&void 0!==e.height?(l=e.height,c=l*o):void 0!==e.width&&void 0!==e.height?(c=e.width,l=e.height):(c=s,l=n),c=K(c,e.roundDimensionsTo??1),l=K(l,e.roundDimensionsTo??1);const d={width:c,height:l,fit:e.fit??"fill",rotation:t,crop:a??{left:0,top:0,width:i,height:r},alpha:e.alpha??"keep"};for(const u of un){let e=u(this,d);if(de(e)&&(e=await e),null!==e)return e}const{canvas:h,context:f,isNew:m}=fn(d.width,d.height);return this._drawWithFitAndMipmapping(h,f,{fit:d.fit,rotation:d.rotation,crop:d.crop,targetIsFresh:m,fillBlack:"discard"===d.alpha}),new ln(h,{timestamp:this.timestamp,duration:this.duration,rotation:0})}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}setEncodeOptions(e){if(!e||"object"!==typeof e)throw new TypeError("newEncodeOptions must be an object.");this.encodeOptions=e}[Symbol.dispose](){this.close()}}const un=[],dn=[];let hn=0;const fn=(e,t)=>{for(const a of dn)if(a.canvas.width===e&&a.canvas.height===t)return a.age=hn++,{canvas:a.canvas,context:a.context,isNew:!1};let i;if("undefined"!==typeof OffscreenCanvas)i=new OffscreenCanvas(e,t);else{if("undefined"===typeof window||"undefined"===typeof document)throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");i=document.createElement("canvas"),i.width=e,i.height=t}const r=i.getContext("2d",{alpha:!0,willReadFrequently:!1});if(!r)throw new Error("The '2d' canvas context is required to transform VideoSamples. Register a custom transformer using registerVideoSampleTransformer to work around this limitation.");return dn.length>=3&&dn.splice(be(dn,e=>e.age),1),dn.push({canvas:i,context:r,age:hn++}),{canvas:i,context:r,isNew:!0}};class mn{constructor(e){if(void 0!==e){if(!e||"object"!==typeof e)throw new TypeError("init.colorSpace, when provided, must be an object.");const t=Object.keys(b);if(null!=e.primaries&&!t.includes(e.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${t.join(", ")}.`);const i=Object.keys(T);if(null!=e.transfer&&!i.includes(e.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${i.join(", ")}.`);const r=Object.keys(v);if(null!=e.matrix&&!r.includes(e.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${r.join(", ")}.`);if(null!=e.fullRange&&"boolean"!==typeof e.fullRange)throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}this.primaries=e?.primaries??null,this.transfer=e?.transfer??null,this.matrix=e?.matrix??null,this.fullRange=e?.fullRange??null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const pn=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,gn=(e,t,i)=>{const r=Math.min(e.left,t),a=Math.min(e.top,i),s=Math.min(e.width,t-r),n=Math.min(e.height,i-a);return l(s>=0),l(n>=0),{left:r,top:a,width:s,height:n}},kn=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},yn=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},bn=(e,t,i)=>{const r=wn(e),a=[];let s=0;for(const n of r){const e=Math.ceil(t/n.widthDivisor),r=Math.ceil(i/n.heightDivisor),o=e*n.sampleBytes,c=o*r;a.push({offset:s,stride:o}),s+=c}return a},wn=e=>{const t=(e,t,i,r,a)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:i,heightDivisor:r},{sampleBytes:t,widthDivisor:i,heightDivisor:r}];return a&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:z(e),l(!1)}},Tn=(e,t)=>{const i={left:0,top:0,width:e.codedWidth,height:e.codedHeight},r=t.rect,a=Sn(i,r,e.codedWidth,e.codedHeight,e.format),s=t.layout;let n;if(t.format&&t.format!==e.format){if(!["RGBA","RGBX","BGRA","BGRX"].includes(t.format))throw new Error("NotSupportedError: Invalid destination format.");n=t.format}else n=e.format;return Pn(a,n,s)},Sn=(e,t,i,r,a)=>{const s={...e};if(void 0!==t){if(0===t.width||0===t.height)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>i)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");s.x=t.x||0,s.y=t.y||0,s.width=t.width||0,s.height=t.height||0}if(!vn(a,s))throw new TypeError("visibleRect alignment is invalid for the format.");return s},vn=(e,t)=>{if(null===e)return!0;const i=wn(e);for(let r=0;r{const r=wn(t),a=r.length;if(void 0!==i&&i.length!==a)throw new TypeError(`Layout must have ${a} planes.`);let s=0;const n=[],o=[];for(let c=0;c4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(e?.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/(Bn(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let i;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)i=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");i=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const r=this.numberOfFrames*this.numberOfChannels*Bn(this.format);if(i.byteLength=this.numberOfFrames)throw new RangeError("frameOffset out of range");const r=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-i;if(r>this.numberOfFrames-i)throw new RangeError("frameCount out of range");const a=Bn(t),s=En(t);if(s&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!s&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(s?r:r*this.numberOfChannels)*a}copyTo(e,t){if(!C(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!In.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{format:i,frameCount:r,frameOffset:a}=t;let{planeIndex:s}=t,n=this.format;const o=i??this.format;if(!o)throw new Error("Destination format not determined");const c=this.numberOfFrames,u=this.numberOfChannels,d=a??0;if(d>=c)throw new RangeError("frameOffset out of range");const h=void 0!==r?r:c-d;if(h>c-d)throw new RangeError("frameCount out of range");const f=Bn(o),m=En(o);if(m&&s>=u)throw new RangeError("planeIndex out of range");if(!m&&0!==s)throw new RangeError("planeIndex out of range");const p=(m?h:h*u)*f;if(e.byteLength2&&o!==n)return void An(this._data,k,n,o,u,s,d,h);try{return void this._data.copyTo(e,{planeIndex:s,frameOffset:d,frameCount:h,format:o})}catch(P){if("f32-planar"===o)throw P;n="f32-planar"}}const b=_n(n),w=Bn(n),T=En(n);let S;if(this._data instanceof xn){const e=e=>{const t=this._data.getDataPlane(e);if(!(t instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");const i=c*w*(T?1:u);if(t.byteLength!==i)throw new TypeError(`Data plane ${e} has invalid size. Expected exactly ${i} bytes, got ${t.byteLength} bytes.`);return t};if(T)if(m)S=e(s),s=0;else{S=new Uint8Array(c*w*u);for(let t=0;tthis.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t0)for(let r=0;r0&&this.copyTo(a,{planeIndex:0,format:this.format,frameOffset:e,frameCount:i});return new Cn({data:a,format:this.format,sampleRate:this.sampleRate,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp+e/this.sampleRate})}close(){this._closed||(sn?.unregister(this),this._data instanceof xn?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Fn(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof xn?this._createAudioDataFromData():Fn(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(En(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let i=0;i0;){const a=Math.min(s,o),c=new Float32Array(i*a);for(let t=0;t0;){const a=Math.min(s,o),l=new Float32Array(i*a);for(let t=0;t{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},En=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},_n=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},Rn=e=>{switch(e){case"u8":case"u8-planar":return(e,t,i)=>e.setUint8(t,H(127.5*(i+1),0,255));case"s16":case"s16-planar":return(e,t,i)=>e.setInt16(t,H(Math.round(32767*i),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,i)=>e.setInt32(t,H(Math.round(2147483647*i),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,i)=>e.setFloat32(t,i,!0)}},Fn=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,An=(e,t,i,r,a,s,n,o)=>{const c=_n(i),l=Rn(r),u=Bn(i),d=Bn(r),h=En(i);if(En(r))if(h){const r=new ArrayBuffer(o*u),a=g(r);e.copyTo(r,{planeIndex:s,frameOffset:n,frameCount:o,format:i});for(let e=0;e{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(void 0!==e.skipLiveWait&&"boolean"!==typeof e.skipLiveWait)throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},On=e=>{if(!ge(e))throw new TypeError("timestamp must be a number.")},Ln=(e,t,i)=>i.verifyKeyPackets?t.then(async t=>{if(!t||"delta"===t.type)return t;const i=await e.determinePacketType(t);return i&&(t.type=i),t}):t;class zn{constructor(e){if(!(e instanceof eo))throw new TypeError("track must be an InputTrack.");this._track=e}async getFirstPacket(e={}){if(Nn(e),this._track.input._disposed)throw new ko;return Ln(this._track,this._track._backing.getFirstPacket(e),e)}async getFirstKeyPacket(e={}){Nn(e);const t=await this.getFirstPacket(e);return t?"key"===t.type?t:this.getNextKeyPacket(t,e):null}async getPacket(e,t={}){if(On(e),Nn(t),this._track.input._disposed)throw new ko;return Ln(this._track,this._track._backing.getPacket(e,t),t)}async getNextPacket(e,t={}){if(!(e instanceof Si))throw new TypeError("packet must be an EncodedPacket.");if(Nn(t),this._track.input._disposed)throw new ko;return Ln(this._track,this._track._backing.getNextPacket(e,t),t)}async getKeyPacket(e,t={}){if(On(e),Nn(t),this._track.input._disposed)throw new ko;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const i=await this._track._backing.getKeyPacket(e,t);if(!i)return i;l("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getKeyPacket(i.timestamp-1/await this._track.getTimeResolution(),t):i}async getNextKeyPacket(e,t={}){if(!(e instanceof Si))throw new TypeError("packet must be an EncodedPacket.");if(Nn(t),this._track.input._disposed)throw new ko;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const i=await this._track._backing.getNextKeyPacket(e,t);if(!i)return i;l("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getNextKeyPacket(i,t):i}packets(e,t,i={}){if(void 0!==e&&!(e instanceof Si))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!i?.metadataOnly)throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof Si))throw new TypeError("endPacket must be an EncodedPacket.");if(Nn(i),this._track.input._disposed)throw new ko;const r=[];let{promise:a,resolve:s}=M(),{promise:n,resolve:o}=M(),c=!1,l=!1,u=null,d=!1;const h=[],f=()=>Math.max(2,h.length);(async()=>{let u=e??await this.getFirstPacket(i);for(;u&&!l&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=t?.sequenceNumber);)r.length>f()?(({promise:n,resolve:o}=M()),await n):(r.push(u),s(),({promise:a,resolve:s}=M()),u=await this.getNextPacket(u,i));c=!0,s()})().catch(e=>{d||(u=e,d=!0,s())});const m=this._track;return{async next(){for(;;){if(m.input._disposed)throw new ko;if(l)return{value:void 0,done:!0};if(d)throw u;if(r.length>0){const e=r.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};await a}},return:async()=>(l=!0,o(),s(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}class Un{constructor(e,t){this.onSample=e,this.onError=t}}class qn{mediaSamplesInRange(e=-1/0,t=1/0,i){On(e),On(t);const r=[];let a=!1,s=null,{promise:n,resolve:o}=M(),{promise:c,resolve:l}=M(),u=!1,d=!1,h=!1,f=null,m=null,p=!1;const g={...i,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{f=await this._createDecoder(i=>{l(),i.timestamp>=t&&(d=!0),d?i.close():(s&&(i.timestamp>e?(r.push(s),a=!0):s.close()),i.timestamp>=e&&(r.push(i),a=!0),s=a?null:i,r.length>0&&(o(),({promise:n,resolve:o}=M())))},e=>{p||(m=e,p=!0,o())});const i=this._createPacketSink(),k=await i.getKeyPacket(e,g)??await i.getFirstKeyPacket(g);let y=k;const b=i.packets(k??void 0,void 0,g);for(await b.next();y&&!d&&!this._track.input._disposed;){const e=Wn(r.length);if(r.length+f.getDecodeQueueSize()>e){({promise:c,resolve:l}=M()),await c;continue}f.decode(y);const t=await b.next();if(t.done)break;y=t.value}await b.return(),h||this._track.input._disposed||await f.flush(),!a&&s&&r.push(s),u=!0,o()})().catch(e=>{p||(m=e,p=!0,o())}).finally(()=>{f?.close()});const k=this._track,y=()=>{s?.close();for(const e of r)e.close()};return{async next(){for(;;){if(k.input._disposed)throw h=!0,d=!0,y(),new ko;if(h)return{value:void 0,done:!0};if(p)throw h=!0,d=!0,y(),m;if(r.length>0){const e=r.shift();return l(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};await n}},return:async()=>(h=!0,d=!0,l(),o(),y(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e,t){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const i=async function*(e){Symbol.iterator in e?yield*e[Symbol.iterator]():yield*e[Symbol.asyncIterator]()}(e),r=[],a=[];let{promise:s,resolve:n}=M(),{promise:o,resolve:c}=M(),u=!1,d=!1,h=null,f=null,m=!1;const p=e=>{a.push(e),n(),({promise:s,resolve:n}=M())},g={...t,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{h=await this._createDecoder(e=>{if(c(),d)return void e.close();let t=0;for(;r.length>0&&e.timestamp-r[0]>-1e-10;)t++,r.shift();if(t>0)for(let i=0;i{m||(f=e,m=!0,n())});const e=this._createPacketSink();let t=null,s=null,k=-1;const y=async()=>{l(s),l(h);let t=s;for(h.decode(t);t.sequenceNumberi&&!d;)({promise:o,resolve:c}=M()),await o;if(d)break;const r=await e.getNextPacket(t,g);l(r),h.decode(r),t=r}k=-1},b=async()=>{l(h),await h.flush();for(let e=0;e{m||(f=e,m=!0,n())}).finally(()=>{h?.close()});const k=this._track,y=()=>{for(const e of a)e?.close()};return{async next(){for(;;){if(k.input._disposed)throw d=!0,y(),new ko;if(d)return{value:void 0,done:!0};if(m)throw d=!0,y(),f;if(a.length>0){const e=a.shift();return l(void 0!==e),c(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};await s}},return:async()=>(d=!0,c(),n(),y(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}const Wn=e=>0===e?40:8;class Hn extends Un{constructor(e,t,i,r,a,s){super(e,t),this.codec=i,this.decoderConfig=r,this.rotation=a,this.timeResolution=s,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ie,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1,this.finalSamples=[],this.mergeAlphaPromises=[];const n=Dn.find(e=>e.supports(i,r));if(n)this.customDecoder=new n,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof ln))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();l(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if(ce()){if("avc"===i&&this.decoderConfig.description){const e=Je(p(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=et(e.sequenceParameterSets[0]);t&&(0===t.frameMbsOnlyFlag&&(this.decoderConfig={...this.decoderConfig,hardwareAcceleration:"prefer-software"}),0!==t.maxDecFrameBuffering&&1!==t.bitstreamRestrictionFlag&&(e.sequenceParameterSets[0]=it(t),this.decoderConfig={...this.decoderConfig,description:Ye(e)}))}}I(this.decoderConfig.colorSpace)||(this.decoderConfig={...this.decoderConfig,colorSpace:{primaries:this.decoderConfig.colorSpace?.primaries??"bt709",matrix:this.decoderConfig.colorSpace?.matrix??"bt709",transfer:this.decoderConfig.colorSpace?.transfer??"bt709",fullRange:this.decoderConfig.colorSpace?.fullRange??!1}})}const t=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(l(this.decoder),Math.max(this.decoder.decodeQueueSize,this.alphaDecoder?.decodeQueueSize??0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--);else{if(l(this.decoder),ae()||D(this.inputTimestamps,e.timestamp,e=>e),ce()&&0===this.currentPacketIndex)if("avc"===this.codec){const t=[];let i=!1;for(const a of Ve(e.data,this.decoderConfig)){const r=je(e.data[a.offset]);if(i||(i=r>=1&&r<=5),r===Le.AUD){if(i)break;t.length=0}r>=20&&r<=31||t.push(e.data.subarray(a.offset,a.offset+a.length))}if(!this.decoderConfig.description)for(let e=0;e{if(t.description){const i=3&p(t.description)[4];return Ge(e,i+1)}return $e(e)})(t,this.decoderConfig);e=new Si(r,e.type,e.timestamp,e.duration)}else if("hevc"===this.codec){const t=gt(e.data,this.decoderConfig);t&&(e=new Si(t,e.type,e.timestamp,e.duration))}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha)return void this.pushNullAlphaFrame();if(this.merger||(this.merger=new jn),!this.alphaDecoder){const e=e=>{if(this.colorQueue.length>0){const t=this.colorQueue.shift();l(void 0!==t),this.mergeAlpha(t,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();l(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=Pt(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(t??e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(const t of rt(e,this.decoderConfig)){const i=at(e[t.offset]);if(i===Ue.RASL_N||i===Ue.RASL_R)return!0}return!1}sampleHandler(e){if(ae()){if(this.sampleQueue.length>0&&e.timestamp>=d(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}D(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();l(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}async mergeAlpha(e,t){const i=M();this.mergeAlphaPromises.push(i.promise);const r={sample:null};this.finalSamples.push(r);try{if(t){l(this.merger);const i=await this.merger.merge(e,t);r.sample=new ln(i)}else r.sample=new ln(e);for(;this.finalSamples.length>0&&null!==this.finalSamples[0].sample;){const e=this.finalSamples.shift();this.sampleHandler(e.sample)}}catch(a){N(this.finalSamples,r),this.onError(a)}finally{N(this.mergeAlphaPromises,i.promise),i.resolve()}}async flush(){if(this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(l(this.decoder),await Promise.all([this.decoder.flush(),this.alphaDecoder?.flush()]),await Promise.all(this.mergeAlphaPromises),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),ae()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(l(this.decoder),"closed"!==this.decoder.state&&this.decoder.close(),this.alphaDecoder&&"closed"!==this.alphaDecoder.state&&this.alphaDecoder.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.merger?.close());for(const e of this.sampleQueue)e.close();this.sampleQueue.length=0}}let Vn=null;class jn{constructor(){this.workers=[],this.nextWorkerIndex=0,this.pendingRequests=new Map,this.nextRequestId=0}merge(e,t){if(0===this.workers.length){if(!Vn){const e=new Blob([`(${Kn.toString()})()`],{type:"application/javascript"});Vn=URL.createObjectURL(e)}const e=H(navigator.hardwareConcurrency,1,4);for(let t=0;t{const t=e.data,i=this.pendingRequests.get(t.id);i&&(this.pendingRequests.delete(t.id),"error"in t?i.reject(new Error(t.error)):i.resolve(t.frame))}),e.addEventListener("error",e=>{const t=new Error(e.message||"Color/alpha merge worker error.");for(const i of this.pendingRequests.values())i.reject(t);this.pendingRequests.clear()}),this.workers.push(e)}}const i=this.nextRequestId++,r=M();this.pendingRequests.set(i,r);const a=this.workers[this.nextWorkerIndex];return this.nextWorkerIndex=(this.nextWorkerIndex+1)%this.workers.length,a.postMessage({id:i,color:e,alpha:t},{transfer:[e,t]}),r.promise}close(){for(const t of this.workers)t.terminate();this.workers.length=0;const e=new Error("Color/alpha merger closed.");for(const t of this.pendingRequests.values())t.reject(e);this.pendingRequests.clear()}}const Kn=()=>{let e=null,t=null,i=Promise.resolve();self.addEventListener("message",e=>{const{id:t,color:a,alpha:s}=e.data;i=i.then(async()=>{try{const e=await r(a,s);self.postMessage({id:t,frame:e},{transfer:[e]})}catch(e){self.postMessage({id:t,error:e.message})}finally{a.close(),s.close()}})});const r=async(e,t)=>{const i=e.format,r=t.format;if(!i||!r)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");const o=i.includes("P10"),c=i.includes("P12"),l=r.includes("P10"),u=r.includes("P12");if(l!==o||u!==c)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${i}', alpha: '${r}').`);if("RGBX"===i||"RGBA"===i||"BGRX"===i||"BGRA"===i)return await a(e,t,i);if("I420"===i||"I420P10"===i||"I420P12"===i||"I422"===i||"I422P10"===i||"I422P12"===i||"I444"===i||"I444P10"===i||"I444P12"===i)return await s(e,t,i);if("NV12"===i)return await n(e,t);throw new Error(`CPU color/alpha merging does not support format '${i}'.`)},a=async(e,t,i)=>{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=r*a,n=new Uint8Array(4*s);await e.copyTo(n);const c=await o(t,r,a,1);for(let o=0,u=3;o{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=i.includes("P10"),n=i.includes("P12"),c=s||n?2:1;let l,u;i.startsWith("I420")?(l=Math.ceil(r/2),u=Math.ceil(a/2)):i.startsWith("I422")?(l=Math.ceil(r/2),u=a):(l=r,u=a);const d=r*a,h=d*c,f=l*u*c,m=new Uint8Array(h+2*f+d*c);await e.copyTo(m);const p=await o(t,r,a,c),g=h+2*f;m.set(p,g);const k={format:i.slice(0,4)+"A"+i.slice(4),codedWidth:r,codedHeight:a,timestamp:e.timestamp,duration:e.duration??void 0,transfer:[m.buffer]};return new VideoFrame(m,k)},n=async(e,i)=>{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=r*a,n=Math.ceil(r/2)*Math.ceil(a/2),c=e.allocationSize();t&&t.byteLength===c||(t=new Uint8Array(c)),await e.copyTo(t);const l=new Uint8Array(s+2*n+s);l.set(t.subarray(0,s),0);const u=s,d=s+n,h=s;for(let o=0;o{const s=t.allocationSize();e&&e.byteLength===s||(e=new Uint8Array(s)),await t.copyTo(e);const n=t.format;if("RGBA"===n||"BGRA"===n||"RGBX"===n||"BGRX"===n){const t="RGBA"===n||"RGBX"===n?0:2,a=i*r;for(let i=0;i{if(!e||"object"!==typeof e)throw new TypeError("decoderOptions must be an object.");if(void 0!==e.hardwareAcceleration&&!["no-preference","prefer-hardware","prefer-software"].includes(e.hardwareAcceleration))throw new TypeError("decoderOptions.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(void 0!==e.optimizeForLatency&&"boolean"!==typeof e.optimizeForLatency)throw new TypeError("decoderOptions.optimizeForLatency, when provided, must be a boolean.")};class $n extends qn{constructor(e,t={}){if(!(e instanceof ro))throw new TypeError("videoTrack must be an InputVideoTrack.");Xn(t),super(),this._track=e,this._decoderOptions=t}async _createDecoder(e,t){if(!(await this._track.canDecode())){if("undefined"===typeof VideoDecoder)throw new Error(le("VideoDecoder"));throw new Error("This video track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=await this._track.getCodec(),r=await this._track.getRotation();let a=await this._track.getDecoderConfig();const s=await this._track.getTimeResolution();return l(i&&a),a={...a,hardwareAcceleration:this._decoderOptions.hardwareAcceleration,optimizeForLatency:this._decoderOptions.optimizeForLatency},new Hn(e,t,i,a,r,s)}_createPacketSink(){return new zn(this._track)}async getSample(e,t={}){On(e);for await(const i of this.mediaSamplesAtTimestamps([e],t))return i;throw new Error("Internal error: Iterator returned nothing.")}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class Gn{constructor(e,t={}){if(this._rotation=0,this._initPromise=null,this._nextCanvasIndex=0,!(e instanceof ro))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&kn(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");void 0!==t.decoderOptions&&Xn(t.decoderOptions),this._videoTrack=e,this._alpha=t.alpha??!1,this._options=t,this._fit=t.fit??"fill",this._videoSampleSink=new $n(e,t.decoderOptions),this._canvasPool=Array.from({length:t.poolSize??0},()=>null)}_ensureInit(){return this._initPromise??(this._initPromise=(async()=>{const e=this._options,t=this._videoTrack,i=e.rotation??await t.getRotation(),r=await t.getSquarePixelWidth(),a=await t.getSquarePixelHeight(),[s,n]=i%180===0?[r,a]:[a,r];let o=e.crop;o&&(o=gn(o,s,n));let[c,l]=o?[o.width,o.height]:[s,n];const u=c/l;void 0!==e.width&&void 0===e.height?(c=e.width,l=Math.round(c/u)):void 0===e.width&&void 0!==e.height?(l=e.height,c=Math.round(l*u)):void 0!==e.width&&void 0!==e.height&&(c=e.width,l=e.height),this._width=c,this._height=l,this._rotation=i,this._crop=o})())}_videoSampleToWrappedCanvas(e){const t=this._width,i=this._height;let r=this._canvasPool[this._nextCanvasIndex],a=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=t,r.height=i):r=new OffscreenCanvas(t,i),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),a=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const s=r.getContext("2d",{alpha:this._alpha||ne()});l(s),e._drawWithFitAndMipmapping(r,s,{fit:this._fit,rotation:this._rotation,crop:this._crop,targetIsFresh:a,fillBlack:!this._alpha&&ne()});const n={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),n}async getCanvas(e,t){On(e),await this._ensureInit();const i=await this._videoSampleSink.getSample(e,t);return i&&this._videoSampleToWrappedCanvas(i)}async*canvases(e,t,i){await this._ensureInit(),yield*W(this._videoSampleSink.samples(e,t,i),e=>this._videoSampleToWrappedCanvas(e))}async*canvasesAtTimestamps(e,t){await this._ensureInit(),yield*W(this._videoSampleSink.samplesAtTimestamps(e,t),e=>e&&this._videoSampleToWrappedCanvas(e))}}class Qn extends Un{constructor(e,t,i,r){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ie,this.customDecoderQueueSize=0,this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0;const a=t=>{let i=t.timestamp;null!==this.expectedFirstTimestamp&&null===this.currentTimestamp&&(this.timestampOffset=this.expectedFirstTimestamp-i),i+=this.timestampOffset,(null===this.currentTimestamp||Math.abs(i-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=i);const a=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const s=r.sampleRate;t.setTimestamp(Math.round(a*s)/s),e(t)},s=Mn.find(e=>e.supports(i,r));if(s)this.customDecoder=new s,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof Cn))throw new TypeError("The argument passed to onSample must be an AudioSample.");a(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{a(new Cn(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(r)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(l(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--)):(l(this.decoder),this.expectedFirstTimestamp??(this.expectedFirstTimestamp=e.timestamp),this.decoder.decode(e.toEncodedAudioChunk()))}async flush(){this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(l(this.decoder),await this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(l(this.decoder),"closed"!==this.decoder.state&&this.decoder.close())}}class Yn extends Un{constructor(e,t,i){super(e,t),this.decoderConfig=i,this.currentTimestamp=null,l(Gt.includes(i.codec)),this.codec=i.codec;const{dataType:r,sampleSize:a,littleEndian:s}=ci(this.codec);switch(this.inputSampleSize=a,a){case 1:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint8(t)-128:"signed"===r?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===r?this.readInputValue=(e,t)=>(e=>{let t=0,i=0,r=~e;128&r&&(r&=-129,t=-1),i=5+((240&r)>>4);const a=(1<(e=>{let t=0,i=0,r=85^e;128&r&&(r&=-129,t=-1),i=4+((240&r)>>4);let a=0;return a=4!==i?1<e.getUint16(t,s)-32768:"signed"===r?this.readInputValue=(e,t)=>e.getInt16(t,s):l(!1);break;case 3:"unsigned"===r?this.readInputValue=(e,t)=>U(e,t,s)-2**23:"signed"===r?this.readInputValue=(e,t)=>((e,t,i)=>U(e,t,i)<<8>>8)(e,t,s):l(!1);break;case 4:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint32(t,s)-2**31:"signed"===r?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===r?this.readInputValue=(e,t)=>e.getFloat32(t,s):l(!1);break;case 8:"float"===r?this.readInputValue=(e,t)=>e.getFloat64(t,s):l(!1);break;default:z(a),l(!1)}switch(a){case 1:"ulaw"===r||"alaw"===r?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,i)=>e.setUint8(t,i+128));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i<<8,!0);break;case 4:this.outputSampleSize=4,"float"===r?(this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0);break;default:z(a),l(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=g(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,r=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,a=new ArrayBuffer(r),s=new DataView(a);for(let l=0;l=n)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=n;const c=new Cn({format:this.outputFormat,data:a,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:o});this.onSample(c)}async flush(){}close(){}}class Jn extends qn{constructor(e){if(!(e instanceof ao))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}async _createDecoder(e,t){if(!(await this._track.canDecode())){if("undefined"===typeof AudioDecoder)throw new Error(le("AudioDecoder"));throw new Error("This audio track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=await this._track.getCodec(),r=await this._track.getDecoderConfig();return l(i&&r),Gt.includes(r.codec)?new Yn(e,t,r):new Qn(e,t,i,r)}_createPacketSink(){return new zn(this._track)}async getSample(e,t={}){On(e);for await(const i of this.mediaSamplesAtTimestamps([e],t))return i;throw new Error("Internal error: Iterator returned nothing.")}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class Zn{constructor(e){if(!(e instanceof ao))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new Jn(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}async getBuffer(e,t){On(e);const i=await this._audioSampleSink.getSample(e,t);return i&&this._audioSampleToWrappedArrayBuffer(i)}buffers(e,t,i){return W(this._audioSampleSink.samples(e,t,i),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e,t){return W(this._audioSampleSink.samplesAtTimestamps(e,t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class eo{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof ro}isAudioTrack(){return this instanceof ao}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}async getInternalCodecId(){return this._backing.getInternalCodecId()}get internalCodecId(){return to(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}async getLanguageCode(){return this._backing.getLanguageCode()}get languageCode(){return to(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}async getName(){return this._backing.getName()}get name(){return to(this._backing.getName(),"name","getName")}async getTimeResolution(){return this._backing.getTimeResolution()}get timeResolution(){return to(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}async isRelativeToUnixEpoch(){return this._backing.isRelativeToUnixEpoch()}async getUnixTimeForTimestamp(e){return this._backing.getUnixTimeForTimestamp(e)}async hasUnixTimeMapping(){return null!==await this._backing.getUnixTimeForTimestamp(await this.getFirstTimestamp())}async getDisposition(){return this._backing.getDisposition()}get disposition(){return to(this._backing.getDisposition(),"disposition","getDisposition")}async getBitrate(){return this._backing.getBitrate()}async getAverageBitrate(){return this._backing.getAverageBitrate()}async getFirstTimestamp(){const e=await this._backing.getFirstPacket({metadataOnly:!0});return e?.timestamp??0}async computeDuration(e){const t=await this._backing.getPacket(1/0,{metadataOnly:!0,...e});return X((t?.timestamp??0)+(t?.duration??0),await this.getTimeResolution())}async getDurationFromMetadata(e={}){return this._backing.getDurationFromMetadata(e)}async computePacketStats(e=1/0,t){const i=new zn(this);let r=1/0,a=-1/0,s=0,n=0;for await(const o of i.packets(void 0,void 0,{metadataOnly:!0,...t})){if(s>=e&&o.timestamp>=a)break;r=Math.min(r,o.timestamp),a=Math.max(a,o.timestamp+o.duration),s++,n+=o.byteLength}return{packetCount:s,averagePacketRate:s?Number((s/(a-r)).toPrecision(16)):0,averageBitrate:s?Number((8*n/(a-r)).toPrecision(16)):0}}async isLive(){return null!==await this._backing.getLiveRefreshInterval()}async getLiveRefreshInterval(){return this._backing.getLiveRefreshInterval()}canBePairedWith(e){if(!(e instanceof eo))throw new TypeError("other must be an InputTrack.");return this.input===e.input&&this!==e&&0n!==(this._backing.getPairingMask()&e._backing.getPairingMask())}async getPairableTracks(e){return this.input.getTracks(co({filter:e=>e.canBePairedWith(this)},e))}async getPairableVideoTracks(e){return this.input.getVideoTracks(co({filter:e=>e.canBePairedWith(this)},e))}async getPairableAudioTracks(e){return this.input.getAudioTracks(co({filter:e=>e.canBePairedWith(this)},e))}async getPrimaryPairableVideoTrack(e){return this.input.getPrimaryVideoTrack(co({filter:e=>e.canBePairedWith(this)},e))}async getPrimaryPairableAudioTrack(e){return this.input.getPrimaryAudioTrack(co({filter:e=>e.canBePairedWith(this)},e))}async hasPairableTrack(e){e&&(e=io(e));const t=await this.input.getTracks();for(const i of t)if(this.canBePairedWith(i)&&(!e||await e(i)))return!0;return!1}hasPairableVideoTrack(e){return e&&(e=io(e)),this.hasPairableTrack(async t=>t.isVideoTrack()&&(!e||await e(t)))}hasPairableAudioTrack(e){return e&&(e=io(e)),this.hasPairableTrack(async t=>t.isAudioTrack()&&(!e||await e(t)))}}const to=(e,t,i)=>{if(de(e))throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${i}()' instead.`);return e},io=e=>{if(void 0!==e&&"function"!==typeof e)throw new TypeError("predicate, when provided, must be a function.");return e?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("predicate must return or resolve to a boolean value.");return e},r=e(t);return de(r)?r.then(i):i(r)}:void 0};class ro extends eo{constructor(e,t){super(e,t),this._pixelAspectRatioCache=null,this._backing=t}get type(){return"video"}async getCodec(){return this._backing.getCodec()}get codec(){return to(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await(this._backing.getHasOnlyKeyPackets?.())??"prores"===await this._backing.getCodec()}async getCodedWidth(){return this._backing.getCodedWidth()}get codedWidth(){return to(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}async getCodedHeight(){return this._backing.getCodedHeight()}get codedHeight(){return to(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}async getRotation(){return this._backing.getRotation()}get rotation(){return to(this._backing.getRotation(),"rotation","getRotation")}async getSquarePixelWidth(){return this._backing.getSquarePixelWidth()}get squarePixelWidth(){return to(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}async getSquarePixelHeight(){return this._backing.getSquarePixelHeight()}get squarePixelHeight(){return to(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}async getPixelAspectRatio(){return this._pixelAspectRatioCache??(this._pixelAspectRatioCache=we({num:await this.getSquarePixelWidth()*await this.getCodedHeight(),den:await this.getSquarePixelHeight()*await this.getCodedWidth()}))}get pixelAspectRatio(){return this._pixelAspectRatioCache??(this._pixelAspectRatioCache=we({num:to(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*to(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:to(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*to(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")}))}async getDisplayWidth(){const e=await(this._backing.getMetadataDisplayWidth?.());if(null!=e)return e;return await this.getRotation()%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight()}get displayWidth(){const e=this._backing.getMetadataDisplayWidth?.();if(void 0!==e){const t=to(e,"displayWidth","getDisplayWidth");if(null!==t)return t}const t=to(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return to(t,"displayWidth","getDisplayWidth")}async getDisplayHeight(){const e=await(this._backing.getMetadataDisplayHeight?.());if(null!=e)return e;return await this.getRotation()%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth()}get displayHeight(){const e=this._backing.getMetadataDisplayHeight?.();if(void 0!==e){const t=to(e,"displayHeight","getDisplayHeight");if(null!==t)return t}const t=to(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return to(t,"displayHeight","getDisplayHeight")}async getColorSpace(){return this._backing.getColorSpace()}async hasHighDynamicRange(){const e=await this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pq"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix}async canBeTransparent(){return this._backing.canBeTransparent()}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await(this._backing.getMetadataCodecParameterString?.());if(null!=e)return e;const t=await this._backing.getDecoderConfig();return t?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const t=await this._backing.getCodec();if(l(null!==t),Dn.some(i=>i.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(await VideoDecoder.isConfigSupported(e)).supported}catch(e){return xe._error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Si))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");const t=await this.getCodec();if(null===t)return null;const i=await this.getDecoderConfig();return l(i),Pt(t,i,e.data)}async computeFrameRateMetrics(e={}){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.targetPacketCount&&(!ge(e.targetPacketCount)||e.targetPacketCount<0))throw new TypeError("options.targetPacketCount must be a non-negative number.");const t=await this.getTimeResolution(),i=e.targetPacketCount??256,r=new zn(this),a=[];let s=-1/0,n=0;for await(const I of r.packets(void 0,void 0,{metadataOnly:!0})){if(a.length>=i&&I.timestamp>=s)break;a.push(I.timestamp),s=Math.max(s,I.timestamp),n++}const o=new Float64Array(a.length);for(let I=0;Ie-t),b=k-1>>1,w=k>>1;let T=0,S=0,v=0;for(const I of y)if(v+=f.get(I),0===T&&v>b&&(T=I),v>w){S=I;break}const P=(d/T+d/S)/2;return{underlyingFrameRate:u,bestGuessFrameRate:null!==u?u:fo(P),minFrameRate:d/p,maxFrameRate:d/m,averageFrameRate:d*k/g,medianFrameRate:P,frameRateIsConstant:null!==u&&1===m&&1===p,probedPacketCount:n}}}class ao extends eo{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}async getCodec(){return this._backing.getCodec()}get codec(){return to(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await(this._backing.getHasOnlyKeyPackets?.())??!0}async getNumberOfChannels(){return this._backing.getNumberOfChannels()}get numberOfChannels(){return to(this._backing.getNumberOfChannels(),"numberOfChannels","getNumberOfChannels")}async getSampleRate(){return this._backing.getSampleRate()}get sampleRate(){return to(this._backing.getSampleRate(),"sampleRate","getSampleRate")}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await(this._backing.getMetadataCodecParameterString?.());if(null!=e)return e;const t=await this._backing.getDecoderConfig();return t?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const t=await this._backing.getCodec();if(l(null!==t),Mn.some(i=>i.supports(t,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof AudioDecoder)return!1;return!0===(await AudioDecoder.isConfigSupported(e)).supported}catch(e){return xe._error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Si))throw new TypeError("packet must be an EncodedPacket.");return null===await this.getCodec()?null:"key"}}const so=e=>-(e??-1/0),no=e=>-e,oo=e=>{if("object"!==typeof e||!e)throw new TypeError("query must be an object.");if(void 0!==e.filter&&"function"!==typeof e.filter)throw new TypeError("query.filter, when provided, must be a function.");if(void 0!==e.sortBy&&"function"!==typeof e.sortBy)throw new TypeError("query.sortBy, when provided, must be a function.");return{filter:e.filter?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("query.filter must return or resolve to a boolean.");return e},r=e.filter(t);return de(r)?r.then(i):i(r)}:void 0,sortBy:e.sortBy?t=>{const i=e=>{if("number"!==typeof e&&(!Array.isArray(e)||!e.every(e=>"number"===typeof e)))throw new TypeError("query.sortBy must return or resolve to a number or an array of numbers.");return e},r=e.sortBy(t);return de(r)?r.then(i):i(r)}:void 0}},co=(e,t)=>({filter:e?.filter||t?.filter?i=>{const r=e?.filter?.(i)??!0,a=e=>!1!==e&&(t?.filter?.(i)??!0);return de(r)?r.then(a):a(r)}:void 0,sortBy:e?.sortBy||t?.sortBy?i=>{const r=e?.sortBy?.(i)??[],a=t?.sortBy?.(i)??[],s=(e,t)=>[...Array.isArray(e)?e:[e],...Array.isArray(t)?t:[t]];return de(r)||de(a)?Promise.all([r,a]).then(([e,t])=>s(e,t)):s(r,a)}:void 0}),lo=async(e,t)=>{let i=e;if(t?.filter){const r=e.map(e=>t.filter(e));if(r.some(e=>de(e))){const t=await Promise.all(r);i=e.filter((e,i)=>t[i])}else i=e.filter((e,t)=>r[t])}if(!t?.sortBy)return i;const r=i.map(e=>t.sortBy(e)),a=r.some(e=>de(e))?await Promise.all(r):r;return i.map((e,t)=>({track:e,sortValue:a[t]})).sort((e,t)=>{const i=Array.isArray(e.sortValue)?e.sortValue:[e.sortValue],r=Array.isArray(t.sortValue)?t.sortValue:[t.sortValue],a=Math.max(i.length,r.length);for(let s=0;se.track)},uo=(e,t)=>{const i=1e6,r=1+1e-9,a=[12,15,20,24e3/1001,24,25,3e4/1001,30,48,50,6e4/1001,60,100,12e4/1001,120,144,240];if(e.length<2)return null;const s=new Float64Array(e.length-1);for(let T=1;T0))return null;s[T-1]=t}const n=s.slice();n.sort();let o=n[Math.floor(.05*n.length)];for(let T=0;T<6;T++){let e=0,t=0;for(const a of s){const i=Math.max(1,Math.round(a/o));Math.abs(a-i*o)>=r||(e+=a,t+=i)}if(0===t)return null;const i=e/t;if(Math.abs(i-o)<=1e-12*Math.max(1,o)){o=i;break}o=i}let c=0,l=0,u=0;for(const T of s){const e=Math.max(1,Math.round(T/o));Math.abs(T-e*o)>=r||(c++,l+=T,u+=e)}if(c/s.length<.98)return null;o=l/u;const d=1/Math.min(u,1e3),h=Math.max(Number.EPSILON,o-d),f=o+d,m=t/f,p=t/h,g=t/o;let k=null,y=1/0;for(const T of a){if(Tp)continue;const e=Math.abs(T/g-1);e{for(let r=1;r<=i;r++){const i=Math.floor(e*r)+1;if(i/r{const t=[24/1.001,30/1.001,60/1.001,120/1.001],i=[12,15,20,24,25,30,48,50,60,100,120,144,240];for(const s of t)if(Math.abs(s/e-1)<=5e-4)return s;let r=e,a=1/0;for(const s of i){const t=Math.abs(s/e-1);t<=.025&&t!(e instanceof Es)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(e.source instanceof ts||e.source instanceof is))throw new TypeError("options.source must be a Source or SourceRef.");if(e.source instanceof ts&&e.source._disposed)throw new TypeError("options.source must not be a disposed Source.");if(void 0!==e.initInput&&!(e.initInput instanceof po))throw new TypeError("options.initInput, when provided, must be an Input.");void 0!==e.formatOptions&&((e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(`${t}, when provided, must be an object.`);if(void 0!==e.isobmff){if(!e.isobmff||"object"!==typeof e.isobmff)throw new TypeError(`${t}.isobmff, when provided, must be an object.`);if(void 0!==e.isobmff.resolveKeyId&&"function"!==typeof e.isobmff.resolveKeyId)throw new TypeError(`${t}.isobmff.resolveKeyId, when provided, must be a function.`)}if(void 0!==e.hls){if(!e.hls||"object"!==typeof e.hls)throw new TypeError(`${t}.hls, when provided, must be an object.`);if(void 0!==e.hls.offsetTimestampsByDateTime&&"boolean"!==typeof e.hls.offsetTimestampsByDateTime)throw new TypeError(`${t}.hls.offsetTimestampsByDateTime, when provided, must be a boolean.`)}})(e.formatOptions,"formatOptions"),this._formats=e.formats,this._initInput=e.initInput??null,this._formatOptions=e.formatOptions??{},e.source instanceof ts?this._rootRef=e.source.ref():this._rootRef=e.source,this._sourceRefs.push(this._rootRef)}get _rootSource(){return this._rootRef.source}async _getSourceUncached(e){l(this._rootSource instanceof rs);const t=await this._rootSource._resolveRequest(e);return this._emit("source",{source:t.source,request:e,isRoot:e.isRoot}),t}_getSourceCached(e,t=1){const i=this._sourceCache.find(i=>i.cacheGroup===t&&as(i.request,e));if(i)return i.age++,Promise.resolve(i.sourceRef.source.ref());const r=this._sourceCachePromises.find(i=>i.cacheGroup===t&&as(i.request,e));if(r)return r.promise.then(e=>e.sourceRef.source.ref());const a=(async()=>{const i=await this._getSourceUncached(e);if(ye(this._sourceCache,e=>e.cacheGroup===t&&1===e.sourceRef.source._refCount)>=4){const e=be(this._sourceCache,e=>e.cacheGroup===t&&1===e.sourceRef.source._refCount?e.age:1/0);l(-1!==e);const i=this._sourceCache[e];this._sourceCache.splice(e,1),i.sourceRef.free(),N(this._sourceRefs,i.sourceRef)}this._sourceRefs.push(i);const r=this._sourceCachePromises.findIndex(t=>t.request===e);l(-1!==r),this._sourceCachePromises.splice(r,1);return{request:e,sourceRef:i,age:this._nextSourceCacheAge++,cacheGroup:t}})();return this._sourceCachePromises.push({request:e,cacheGroup:t,promise:a}),a.then(e=>{const t=e.sourceRef.source.ref();return this._sourceCache.push(e),t})}_getDemuxer(){return this._demuxerPromise??(this._demuxerPromise=(async()=>{this._reader=new yo(this._rootSource),this._emit("source",{source:this._rootSource,request:null,isRoot:!0});for(const e of this._formats){if(await e._canReadInput(this))return this._format=e,this._onFormatDetermined?.(e),e._createDemuxer(this)}throw new go})())}get source(){return this._rootSource}async getFormat(){return await this._getDemuxer(),l(this._format),this._format}async canRead(){try{return await this._getDemuxer(),!0}catch(e){if(e instanceof go)return!1;throw e}}async getFirstTimestamp(e){e??(e=await this.getTracks());const t=e.filter(e=>null!==e);if(0===t.length)return 0;const i=await Promise.all(t.map(e=>e._backing.getFirstPacket({metadataOnly:!0}))),r=Math.min(...i.map(e=>e?.timestamp??1/0));return r===1/0?0:r}async computeDuration(e,t){e??(e=await this.getTracks());const i=e.filter(e=>null!==e);if(0===i.length)return 0;const r=await Promise.all(i.map(e=>e.computeDuration(t)));return Math.max(...r)}async getDurationFromMetadata(e,t){e??(e=await this.getTracks());const i=e.filter(e=>null!==e),r=(await Promise.all(i.map(e=>e.getDurationFromMetadata(t)))).filter(e=>null!==e);return 0===r.length?null:Math.max(...r)}async getTracks(e){e&&(e=oo(e));const t=(await this._getTrackBackings()).map(e=>this._wrapBackingAsTrack(e));return lo(t,e)}async getVideoTracks(e){e&&(e=oo(e));const t=(await this.getTracks()).filter(e=>e.isVideoTrack());return lo(t,e)}async getAudioTracks(e){e&&(e=oo(e));const t=(await this.getTracks()).filter(e=>e.isAudioTrack());return lo(t,e)}async getPrimaryVideoTrack(e){e&&(e=oo(e));const t=co(e,{sortBy:async e=>[no((await e.getDisposition()).default),no(await e.hasPairableAudioTrack()),no(!(await e.hasOnlyKeyPackets())),so(await e.getBitrate())]});return(await this.getVideoTracks(t))[0]??null}async getPrimaryAudioTrack(e){e&&(e=oo(e));const t=await this.getPrimaryVideoTrack(),i=co(e,{sortBy:async e=>[no(!t||e.canBePairedWith(t)),no((await e.getDisposition()).default),so(await e.getBitrate())]});return(await this.getAudioTracks(i))[0]??null}async _getTrackBackings(){const e=await this._getDemuxer();return this._trackBackingsCache??(this._trackBackingsCache=await e.getTrackBackings())}_wrapBackingAsTrack(e){const t=this._backingToTrack.get(e);if(t)return t;const i="video"===e.getType()?new ro(this,e):new ao(this,e);return this._backingToTrack.set(e,i),i}async getMimeType(){return(await this._getDemuxer()).getMimeType()}async getMetadataTags(){return(await this._getDemuxer()).getMetadataTags()}dispose(){if(!this._disposed){this._disposed=!0;for(const e of this._sourceRefs)e.free();this._sourceRefs.length=0,this._demuxerPromise&&this._demuxerPromise.then(e=>e.dispose()).catch(()=>{})}}[Symbol.dispose](){this.dispose()}}class go extends Error{constructor(e="Input has an unsupported or unrecognizable format."){super(e),this.name="UnsupportedInputFormatError"}}class ko extends Error{constructor(e="Input has been disposed."){super(e),this.name="InputDisposedError"}}class yo{constructor(e){this.source=e}get fileSize(){const e=this.source._getFileSize();if(void 0===e)throw new Error("Reading file size too early; read required first.");return e}get fileSizeNonStrict(){return this.source._getFileSize()??null}requestSlice(e,t){if(this.source._disposed)throw new ko;if(e<0)return null;if(null!==this.fileSizeNonStrict&&e+t>this.fileSizeNonStrict)return null;if(0===t){const t=new Uint8Array(0);return new bo(t,g(t),0,e,e)}const i=e+t,r=this.source._read(e,i,0,es);return de(r)?r.then(t=>t?new bo(t.bytes,t.view,t.offset,e,i):null):r?new bo(r.bytes,r.view,r.offset,e,i):null}requestSliceRange(e,t,i){if(this.source._disposed)throw new ko;if(e<0)return null;if(null!==this.fileSizeNonStrict)return this.requestSlice(e,H(this.fileSizeNonStrict-e,t,i));{const r=this.requestSlice(e,i),a=r=>r||(l(null!==this.fileSizeNonStrict),this.requestSlice(e,H(this.fileSizeNonStrict-e,t,i)));return de(r)?r.then(a):a(r)}}requestEntireFile(){if(null!==this.fileSizeNonStrict)return this.requestSlice(0,this.fileSizeNonStrict);return(async()=>{const e=[];let t=0;for(;;){if(1===e.length&&null!==this.fileSizeNonStrict)return this.requestSlice(0,this.fileSizeNonStrict);let i=this.requestSliceRange(t,0,1024);if(de(i)&&(i=await i),!i||0===i.length)break;const r=To(i,i.length);e.push(r),t+=i.length}const i=new Uint8Array(t);let r=0;for(const a of e)i.set(a,r),r+=a.length;return new bo(i,g(i),0,0,t)})()}}class bo{constructor(e,t,i,r,a){this.bytes=e,this.view=t,this.offset=i,this.start=r,this.end=a,this.bufferPos=r-i}static tempFromBytes(e){return new bo(e,g(e),0,0,e.length)}get length(){return this.end-this.start}get filePos(){return this.offset+this.bufferPos}set filePos(e){this.bufferPos=e-this.offset}get remainingLength(){return Math.max(this.end-this.filePos,0)}skip(e){this.bufferPos+=e}slice(e,t=this.end-e){if(ethis.end)throw new RangeError("Slicing outside of original slice.");return new bo(this.bytes,this.view,this.offset,e,e+t)}}const wo=(e,t)=>{if(e.filePose.end)throw new RangeError(`Tried reading [${e.filePos}, ${e.filePos+t}), but slice is [${e.start}, ${e.end}). 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s&zo.Footer&&(o+=Vo),{majorVersion:r,revision:a,flags:s,size:o}},Go=(e,t,i)=>{var r,a,s,n,o;if(![2,3,4].includes(t.majorVersion))return void xe._warn(`Unsupported ID3v2 major version: ${t.majorVersion}`);const c=t.flags&zo.Footer?t.size-Vo:t.size,l=To(e,c),u=new Qo(t,l);if(t.flags&zo.Unsynchronisation&&3===t.majorVersion&&u.ununsynchronizeAll(),t.flags&zo.ExtendedHeader){const e=u.readU32();3===t.majorVersion?u.pos+=e:u.pos+=e-4}for(;u.pos<=u.bytes.length-u.frameHeaderSize();){const e=u.readId3V2Frame();if(!e)break;const c=u.pos,l=u.pos+e.size;let d=!1,h=!1,f=!1;if(3===t.majorVersion?(d=!!(64&e.flags),h=!!(128&e.flags)):4===t.majorVersion&&(d=!!(4&e.flags),h=!!(8&e.flags),f=!!(2&e.flags)||!!(t.flags&zo.Unsynchronisation)),d)xe._warn(`Skipping encrypted ID3v2 frame ${e.id}`),u.pos=l;else if(h)xe._warn(`Skipping compressed ID3v2 frame ${e.id}`),u.pos=l;else{if(f&&u.ununsynchronizeRegion(u.pos,l),i.raw??(i.raw={}),"TXXX"===e.id){const e=(r=i.raw).TXXX??(r.TXXX={}),t=u.readId3V2TextEncoding(),a=u.readId3V2Text(t,l),s=u.readId3V2Text(t,l);e[a]??(e[a]=s)}else"T"===e.id[0]?(a=i.raw)[s=e.id]??(a[s]=u.readId3V2EncodingAndText(l)):(n=i.raw)[o=e.id]??(n[o]=u.readBytes(e.size));switch(u.pos=c,e.id){case"TIT2":case"TT2":i.title??(i.title=u.readId3V2EncodingAndText(l));break;case"TIT3":case"TT3":i.description??(i.description=u.readId3V2EncodingAndText(l));break;case"TPE1":case"TP1":i.artist??(i.artist=u.readId3V2EncodingAndText(l));break;case"TALB":case"TAL":i.album??(i.album=u.readId3V2EncodingAndText(l));break;case"TPE2":case"TP2":i.albumArtist??(i.albumArtist=u.readId3V2EncodingAndText(l));break;case"TRCK":case"TRK":{const e=u.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(i.trackNumber??(i.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&(i.tracksTotal??(i.tracksTotal=r))}break;case"TPOS":case"TPA":{const e=u.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(i.discNumber??(i.discNumber=t)),r&&Number.isInteger(r)&&r>0&&(i.discsTotal??(i.discsTotal=r))}break;case"TCON":case"TCO":{const e=u.readId3V2EncodingAndText(l);let t=/^\((\d+)\)/.exec(e);if(t){const e=Number.parseInt(t[1]);if(void 0!==jo[e]){i.genre??(i.genre=jo[e]);break}}if(t=/^\d+$/.exec(e),t){const e=Number.parseInt(t[0]);if(void 0!==jo[e]){i.genre??(i.genre=jo[e]);break}}i.genre??(i.genre=e)}break;case"TDRC":case"TDAT":{const e=u.readId3V2EncodingAndText(l),t=new Date(e);Number.isNaN(t.getTime())||(i.date??(i.date=t))}break;case"TYER":case"TYE":{const e=u.readId3V2EncodingAndText(l),t=Number.parseInt(e,10);Number.isInteger(t)&&(i.date??(i.date=new Date(String(t))))}break;case"USLT":case"ULT":{const e=u.readU8();u.pos+=3,u.readId3V2Text(e,l),i.lyrics??(i.lyrics=u.readId3V2Text(e,l))}break;case"COMM":case"COM":{const e=u.readU8();u.pos+=3,u.readId3V2Text(e,l),i.comment??(i.comment=u.readId3V2Text(e,l))}break;case"APIC":case"PIC":{const e=u.readId3V2TextEncoding();let r;if(2===t.majorVersion){const e=u.readAscii(3);r="PNG"===e?"image/png":"JPG"===e?"image/jpeg":"image/*"}else r=u.readId3V2Text(e,l);const a=u.readU8(),s=u.readId3V2Text(e,l).trimEnd(),n=l-u.pos;if(n>=0){const e=u.readBytes(n);i.images||(i.images=[]),i.images.push({data:e,mimeType:r,kind:3===a?"coverFront":4===a?"coverBack":"unknown",description:s})}}break;default:u.pos+=e.size}u.pos=l}}};class Qo{constructor(e,t){this.header=e,this.bytes=t,this.pos=0,this.view=new DataView(t.buffer,t.byteOffset,t.byteLength)}frameHeaderSize(){return 2===this.header.majorVersion?6:10}ununsynchronizeAll(){const e=[];for(let t=0;t{const t=this.pos+e;if(t>this.bytes.length)return!1;if(t<=this.bytes.length-this.frameHeaderSize()){this.pos+=e;const t=this.readAscii(4);if("\0\0\0\0"!==t&&!/[0-9A-Z]{4}/.test(t))return!1}return!0};if(!s(i)){const e=4===this.header.majorVersion?t:gi(t);s(e)&&(i=e)}return this.pos=a,{id:e,size:i,flags:r}}}readId3V2TextEncoding(){const e=this.readU8();if(e>3)throw new Error(`Unsupported text encoding: ${e}`);return e}readId3V2Text(e,t){const i=this.pos,r=this.readBytes(t-this.pos);switch(e){case qo.ISO_8859_1:{let e="";for(let t=0;t0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}if(254===r[0]&&255===r[1]){const e=new TextDecoder("utf-16be"),t=he(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}{const e=he(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),k.decode(r.subarray(0,e))}case qo.UTF_16_BE_NO_BOM:{const e=new TextDecoder("utf-16be"),t=he(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(0,t))}case qo.UTF_8:{const e=he(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),k.decode(r.subarray(0,e))}}}readId3V2EncodingAndText(e){if(this.pos>=e)return"";const t=this.readId3V2TextEncoding();return this.readId3V2Text(t,e)}}class Yo{constructor(e){this.events=e,this.input=null,this.audioSink=null,this.audioIterator=null,this.audioContext=null,this.gainNode=null,this.audioContextStartTime=0,this.playbackTimeAtStart=0,this.latestScheduledEndTime=0,this.duration=Number.NaN,this.paused=!0,this.volume=.7,this.muted=!1,this.playbackRate=1,this.asyncId=0,this.queuedNodes=new Set}get currentTime(){return this.paused?this.playbackTimeAtStart:(this.audioContext.currentTime-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart}ensureAudioContext(e){if(this.audioContext)return;const t=window.AudioContext||window.webkitAudioContext;try{this.audioContext=new t({sampleRate:e})}catch{this.audioContext=new t}this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination),this.updateGain()}updateGain(){if(!this.gainNode)return;const e=this.muted?0:this.volume;this.gainNode.gain.value=e*e}stopQueuedNodes(){this.queuedNodes.forEach(e=>e.stop()),this.queuedNodes.clear()}async stopIterator(){await(this.audioIterator?.return()),this.audioIterator=null}handleNoAudioTrack(){this.audioSink=null,this.ensureAudioContext()}async load(e,t){++this.asyncId,await this.stopIterator(),this.stopQueuedNodes(),this.paused=!0,this.playbackTimeAtStart=0,this.audioContextStartTime=0;const{input:i,audioTrack:r,duration:a}=e;return this.input=i,this.duration=a,r?null!==r.codec&&await r.canDecode()?(this.ensureAudioContext(r.sampleRate),this.audioSink=new Zn(r),void t?.()):(this.audioSink=null,this.ensureAudioContext(),void t?.()):(this.handleNoAudioTrack(),void t?.())}async runIterator(e){if(!this.audioSink)return;await this.stopIterator(),this.audioIterator=this.audioSink.buffers(this.currentTime);for(;;){if(e!==this.asyncId||this.paused)return;const i=[];let r=!1;try{for(let e=0;e<16;e++){const e=await this.audioIterator.next();if(e.done){r=!0;break}i.push(e.value)}}catch(t){console.error("Audio iterator error:",t),r=!0}if(e!==this.asyncId||this.paused)return;i.length>0&&"suspended"===this.audioContext.state&&(await this.audioContext.resume(),this.events.emit("canplay"),this.events.emit("playing"));for(const{buffer:e,timestamp:t}of i){const i=this.audioContext.createBufferSource();i.buffer=e,i.connect(this.gainNode),i.playbackRate.value=this.playbackRate;const r=this.audioContextStartTime+(t-this.playbackTimeAtStart)/this.playbackRate,a=(r+e.duration/this.playbackRate-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart;a>this.latestScheduledEndTime&&(this.latestScheduledEndTime=a),r>=this.audioContext.currentTime?i.start(r):i.start(this.audioContext.currentTime,(this.audioContext.currentTime-r)*this.playbackRate),this.queuedNodes.add(i),i.onended=()=>this.queuedNodes.delete(i)}if(r)break;await new Promise(e=>setTimeout(e,0));const a=1;for(;this.latestScheduledEndTime-this.currentTime>a;){if(e!==this.asyncId||this.paused)return;await new Promise(e=>setTimeout(e,50))}}}async play(){if(!this.paused)return;this.audioContext||this.ensureAudioContext(),"suspended"===this.audioContext.state&&await this.audioContext.resume(),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart,this.paused=!1;const e=++this.asyncId;this.runIterator(e)}pause(){this.paused||(this.playbackTimeAtStart=this.currentTime,this.paused=!0,this.stopIterator(),this.stopQueuedNodes())}async seek(e){this.playbackTimeAtStart=Math.max(0,e),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart;const t=++this.asyncId;this.paused||this.runIterator(t)}setVolume(e,t){this.volume=e,this.muted=t,this.updateGain()}setPlaybackRate(e){if(e!==this.playbackRate&&(this.paused||(this.playbackTimeAtStart=this.currentTime,this.audioContextStartTime=this.audioContext.currentTime),this.playbackRate=e,!this.paused)){const e=++this.asyncId;this.runIterator(e)}}destroy(){this.asyncId++,this.pause(),this.audioContext?.close(),this.audioContext=null,this.input=null,this.audioSink=null}}async function Jo(e){return await e.getAverageBitrate()??await e.getBitrate()??0}const Zo=/\.m3u8(?:$|[?#])/i;function ec(e){return"string"===typeof e&&Zo.test(e)}function tc(e){const t=function(e){return"string"===typeof e?new us(e):e instanceof Blob?new os(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new fs(e):e??null}(e);return t?new po({source:t,formats:ec(e)?en:Zs}):null}class ic{constructor(){this.active=!0,this.input=null,this.timers=new Set,this.controller="undefined"===typeof AbortController?void 0:new AbortController,this.cancellation=new Promise(e=>{this.resolveCancellation=e})}get signal(){return this.controller?.signal}own(e){this.active?this.input=e:e.dispose()}defer(e){if(!this.active)return;const t=setTimeout(()=>{this.timers.delete(t),this.active&&e()},0);this.timers.add(t)}async wait(e,t){try{await Promise.race([e,this.cancellation,t>0?this.timeout(t):new Promise(()=>{})])}finally{void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0)}}timeout(e){return new Promise((t,i)=>{this.deadline=setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){const e=this.input;this.input=null,e?.dispose()}cancel(){if(this.active){this.active=!1;for(const e of this.timers)clearTimeout(e);this.timers.clear(),void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0),this.resolveCancellation(),this.controller?.abort(),this.disposeInput()}}}function rc(e,t,i){for(const r of i){if(!t())return;e.emit(r)}}async function ac({input:e,videoTrack:t,audioTrack:i}){const r=[t,i].filter(e=>null!==e),a=t||i,s=Boolean(a&&await a.isLive());let n=Number.NaN;return r.length>0&&(n=await e.getDurationFromMetadata(r,{skipLiveWait:!0}),null!==n||s||(n=await e.computeDuration(r,{skipLiveWait:!0}))),s?Number.POSITIVE_INFINITY:n??Number.NaN}function sc(){let e,t;return{promise:new Promise((i,r)=>{e=i,t=r}),resolve:e,reject:t}}class nc{constructor(e){this.host=e,this.wanted=!1,this.playing=null,this.seeking=null,this.audioStart=null}operation(){return{...sc(),source:this.host.loadSeq,complete:sc()}}current(e,t){return!this.host.destroyed&&e.source===this.host.loadSeq&&this[t]===e}cancelPlay(){const e=this.playing;this.playing=null,e?.resolve()}invalidate(){this.cancelPlay(),this.wanted=!1;const e=this.seeking;this.seeking=null,e?.complete.resolve(),e?.resolve(),this.host.seeking=!1}ended(){this.wanted=!1,this.cancelPlay()}stop(){this.host.paused||(this.host.paused=!0,this.stopEngines(),this.host.events.emit("pause"))}stopEngines(){const e=[];for(const i of[()=>this.host.audio.pause(),()=>this.host.video.stop()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}pause(){this.wanted=!1,this.cancelPlay(),this.stop()}play(){if(this.host.destroyed)return Promise.resolve();if(this.wanted=!0,this.playing)return this.playing.promise;if(this.host.ended)return this.seek(0,!0);if(!this.host.paused&&!this.seeking)return Promise.resolve();const e=this.operation();return this.playing=e,this.runPlay(e).then(e.resolve,e.reject),e.promise}async startAudio(){this.audioStart||(this.audioStart=this.host.audio.play());const e=this.audioStart;try{await e}finally{this.audioStart===e&&(this.audioStart=null)}}async runPlay(e){const t=()=>this.current(e,"playing")&&this.wanted;try{for(;this.seeking;)if(await this.seeking.complete.promise,!t())return;if(!t())return;if(this.host.paused=!1,await this.startAudio(),!t())return void(this.wanted&&!this.host.destroyed||this.host.audio.pause());this.host.video.start(this.host.audio),rc(this.host.events,t,["play","playing"])}catch(i){if(!t())return;this.wanted=!1,this.host.paused=!0;try{this.stopEngines()}catch(r){console.warn("MediaBunny play cleanup error:",r)}throw i}finally{this.playing===e&&(this.playing=null)}}seek(e,t){return this.position(async t=>{const i=this.host.audio.seek(e),r=t()?this.host.video.seek(e):Promise.resolve();await Promise.all([i,r])},["seeked"],!1,t)}replace(e,t){return this.position(async i=>{e.duration=await ac(e),i()&&(this.host.media=e,await Promise.all([this.host.video.load(e),this.host.audio.load(e)]),i()&&(await Promise.all([this.host.video.seek(t),this.host.audio.seek(t)]),i()&&(this.host.readyState=4,this.host.networkState=1)))},["loadedmetadata","durationchange","progress","loadeddata","canplay","canplaythrough","seeked"],!0)}position(e,t,i,r){if(this.host.destroyed)return Promise.resolve();this.wanted=r??(this.seeking?this.wanted:!this.host.paused),this.cancelPlay();const a=this.seeking,s=this.operation();return this.seeking=s,a?.complete.resolve(),a?.resolve(),this.runPosition(s,e,t,i).then(s.resolve,s.reject),s.promise}async runPosition(e,t,i,r){const a=()=>this.current(e,"seeking");let s=!1;try{if(r&&this.stop(),!a())return;if(this.host.ended=!1,this.host.seeking=!0,rc(this.host.events,a,["seeking","waiting"]),!a())return;if(r||this.stop(),!a())return;if(await t(a),!a())return;if(this.host.seeking=!1,e.complete.resolve(),rc(this.host.events,a,i),!a())return;this.seeking=null,s=this.wanted}catch(n){if(!a())return;throw this.host.seeking=!1,this.wanted=!1,this.cancelPlay(),this.host.reportError(n),n}finally{e.complete.resolve(),this.seeking===e&&(this.seeking=null)}s&&await this.play()}}class oc{constructor({canvas:e,ctx:t,events:i,timeupdateInterval:r=250,avSyncTolerance:a=.12,dropLateFrames:s=!1,poster:n="",preflightRange:o=!1}){this.canvas=e,this.ctx=t,this.events=i,this.timeupdateInterval=r,this.avSyncTolerance=a,this.dropLateFrames=s,this.poster=n,this.preflightRange=o,this.input=null,this.videoSink=null,this.videoIterator=null,this.nextFrame=null,this.rafId=0,this.asyncId=0,this.width=0,this.height=0,this.duration=Number.NaN,this.audioClock=null,this.lastTimeUpdate=0,this.stalled=!1,this.playbackRate=1,this.posterDrawn=!1,this.isFetching=!1}async preflight(e,t,i){return async function(e,t,i,r,a=()=>!0){if(r?.aborted||!a())return!1;if(!t||"string"!==typeof e||ec(e))return!0;try{const t=await fetch(e,r?{method:"HEAD",signal:r}:{method:"HEAD"});if(r?.aborted||!a())return!1;const s=t.headers.get("accept-ranges");return!(!s||"none"===s)||(i.emit("error",new Event("RangeNotSupported")),!1)}catch(s){return!(r?.aborted||!a())&&(console.warn("Preflight check failed:",s),!0)}}(e,this.preflightRange,this.events,t,i)}drawPoster(){if(!this.poster||this.posterDrawn)return;const e=new Image;e.onload=()=>{this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,this.ctx.drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e.src=this.poster}async stopIterator(){await(this.videoIterator?.return()),this.videoIterator=null}clear(){this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height)}async load(e,t){++this.asyncId,await this.stopIterator(),this.clear(),this.posterDrawn=!1;const{input:i,videoTrack:r,duration:a}=e;if(this.input=i,this.duration=a,!r)return this.handleNoVideoTrack(),void t?.();if(null===r.codec||!(await r.canDecode()))return this.handleNoVideoTrack(),void t?.();const s=await r.canBeTransparent();this.videoSink=new Gn(r,{poolSize:2,fit:"contain",alpha:s}),this.width=r.displayWidth,this.height=r.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,t?.(),await this.resetIterator(0)}handleNoVideoTrack(){this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster()}async resetIterator(e){if(await this.stopIterator(),!this.videoSink)return;this.videoIterator=this.videoSink.canvases(e);const t=(await this.videoIterator.next()).value??null,i=(await this.videoIterator.next()).value??null;this.nextFrame=i,t?this.ctx.drawImage(t.canvas,0,0):this.drawPoster()}async updateNextFrame(e){if(this.videoIterator&&!this.isFetching){this.isFetching=!0;try{for(;;){const t=(await this.videoIterator.next()).value??null;if(!t||e!==this.asyncId)return;const i=this.audioClock.currentTime,r=this.dropLateFrames?Math.max(.06,this.avSyncTolerance/Math.max(1,this.playbackRate)):0;if(!(this.dropLateFrames&&t.timestampi)return void(this.nextFrame=null)}}}finally{this.isFetching=!1}}}render(){if(!this.audioClock)return;const e=this.audioClock.currentTime,t=Date.now();if(t-this.lastTimeUpdate>=this.timeupdateInterval&&(this.events.emit("timeupdate"),this.lastTimeUpdate=t),Number.isFinite(this.duration)&&e>=this.duration)return this.stop(),this.stalled=!1,this.events.emit("ended"),this.events.emit("pause"),void this.events.emit("canplay");this.nextFrame&&this.nextFrame.timestamp<=e?(this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.ctx.drawImage(this.nextFrame.canvas,0,0),this.nextFrame=null,this.updateNextFrame(this.asyncId),this.stalled&&(this.events.emit("canplay"),this.events.emit("playing"),this.stalled=!1)):this.nextFrame||(this.updateNextFrame(this.asyncId),!this.nextFrame&&Number.isFinite(this.duration)&&ethis.render())}start(e){this.audioClock=e,this.asyncId++,this.stalled=!1,this.updateNextFrame(this.asyncId),this.rafId=requestAnimationFrame(()=>this.render())}stop(){cancelAnimationFrame(this.rafId)}async seek(e){this.asyncId++,await this.resetIterator(e)}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){this.asyncId++,this.stop(),this.stopIterator(),this.posterDrawn=!1,this.videoSink=null,this.input=null}}class cc{constructor({canvas:e,ctx:i,events:r,option:o={}}){s(this,t),this.events=r,this.option=o,this.audio=new Yo(r),this.video=new oc({canvas:e,ctx:i,events:r,timeupdateInterval:o.timeupdateInterval??250,avSyncTolerance:o.avSyncTolerance??.12,dropLateFrames:o.dropLateFrames??!1,poster:o.poster??"",preflightRange:o.preflightRange??!1}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,this.input=null,this.media=null,this.loadSession=null,this.destroyed=!1,n(this,t,new nc(this)),r.addEventListener("ended",()=>{this.destroyed||(this.ended=!0,this.paused=!0,a(this,t).ended())})}async load(e){if(this.destroyed)return;const i=++this.loadSeq;if(a(this,t).invalidate(),this.loadSession?.cancel(),i!==this.loadSeq||this.destroyed)return;if(this.pause(),i!==this.loadSeq||this.destroyed)return;this.disposeInput();const r=new ic;this.loadSession=r,this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,r.defer(()=>this.events.emit("waiting")),r.defer(()=>this.events.emit("loadstart"));const s=Number.isFinite(this.option.loadTimeout)?this.option.loadTimeout??0:0;try{await r.wait(this.performLoad(e,i,r),s)}catch(n){if(i!==this.loadSeq)return;const e=++this.loadSeq;if(a(this,t).invalidate(),r.cancel(),e!==this.loadSeq||this.destroyed)return;this.disposeInput(),this.reportError(n)}}async performLoad(e,t,i=this.loadSession){const r=()=>!this.destroyed&&t===this.loadSeq;if(!i||!(await this.video.preflight(e,i.signal,r))||!r())return;const a=tc(e);if(!a)return this.video.handleNoVideoTrack(),void(r()&&this.audio.handleNoAudioTrack());i.own(a);const s=await async function(e,t){const i=await e.getPrimaryVideoTrack(),r=i?await i.getPrimaryPairableAudioTrack():await e.getPrimaryAudioTrack(),a=await ac({input:e,videoTrack:i,audioTrack:r}),s=i||r,n=ec(t);return{input:e,videoTrack:i,audioTrack:r,duration:a,isLive:!Number.isFinite(a)&&Boolean(s&&await s.isLive()),isHls:n,videoMode:n?"auto":"manual",audioMode:n?"auto":"manual"}}(a,e);if(!r())return;if(!s.videoTrack&&!s.audioTrack)throw this.video.handleNoVideoTrack(),this.video.duration=Number.NaN,this.audio.duration=Number.NaN,new Error("Input has no audio or video tracks.");this.input=a,this.media=s;const n=function(e,t){let i=!1,r=!1,a=!1;function s(s){t()&&!a&&("video"===s?i=!0:r=!0,i&&r&&(a=!0,e()))}return{video:()=>s("video"),audio:()=>s("audio")}}(()=>{this.readyState=1,rc(this.events,r,["loadedmetadata","durationchange","progress"])},r);try{const e=this.video.load(s,n.video),t=r()?this.audio.load(s,n.audio):Promise.resolve();if(await Promise.all([e,t]),!r())return;this.readyState=4,this.networkState=1,rc(this.events,r,["loadeddata","canplay","canplaythrough","progress"])}catch(o){if(!r())return;throw console.error("MediaBunny load error:",o),o}}createTimeout(e){return new Promise((t,i)=>{setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){this.loadSession?.disposeInput(),this.input=null,this.media=null}async replaceTracks(e){if(this.media&&!this.destroyed)return a(this,t).replace({...this.media,...e},this.currentTime)}async selectHlsQuality(e){return async function(e,t){const{input:i,media:r,loadSeq:a}=e;if(!r?.isHls||!i||e.destroyed)return;const s=()=>!e.destroyed&&e.loadSeq===a&&e.input===i&&e.media===r;let n;try{const e=await i.getVideoTracks();if(!s())return;const a="auto"===t?await i.getPrimaryVideoTrack():e.find(e=>e.id===t)??r.videoTrack;if(!s()||!a)return;let o=r.audioTrack,c=r.audioMode;o&&a.canBePairedWith(o)||(o=await a.getPrimaryPairableAudioTrack(),c="auto"),n={videoTrack:a,audioTrack:o,videoMode:"auto"===t?"auto":"manual",audioMode:c}}catch(o){if(!s())return;throw o}s()&&await e.replaceTracks(n)}(this,e)}async selectHlsAudio(e){return async function(e,t){const{input:i,media:r,loadSeq:a}=e;if(!r?.isHls||!i||e.destroyed)return;const s=()=>!e.destroyed&&e.loadSeq===a&&e.input===i&&e.media===r;let n;try{const e=await i.getAudioTracks();if(!s())return;const a="auto"===t?r.videoTrack?await r.videoTrack.getPrimaryPairableAudioTrack():await i.getPrimaryAudioTrack():e.find(e=>e.id===t)??r.audioTrack;if(!s()||!a)return;let o=r.videoTrack,c=r.videoMode;o&&a.canBePairedWith(o)||(o=await a.getPrimaryPairableVideoTrack(),c="auto"),n={videoTrack:o,audioTrack:a,videoMode:c,audioMode:"auto"===t?"auto":"manual"}}catch(o){if(!s())return;throw o}s()&&await e.replaceTracks(n)}(this,e)}async getHlsState(){const e=this.media;if(this.destroyed)return null;try{const t=await async function(e){if(!e?.isHls||!e.input)return null;const[t,i]=await Promise.all([e.input.getVideoTracks(),e.videoTrack?e.videoTrack.getPairableAudioTracks():[]]),[r,a]=await Promise.all([Promise.all(t.map(async(e,t)=>({id:e.id,track:e,index:t,name:await e.getName(),height:await e.getDisplayHeight(),bitrate:await Jo(e)}))),Promise.all(i.map(async(e,t)=>{const i=await e.getName(),r=await e.getLanguageCode();return{id:e.id,track:e,index:t,name:i,lang:r,language:r,bitrate:await Jo(e)}}))]);return{levels:r,audios:a,currentLevel:e.videoTrack?r.find(t=>t.id===e.videoTrack?.id)??null:null,currentAudio:e.audioTrack?a.find(t=>t.id===e.audioTrack?.id)??null:null,videoMode:e.videoMode??"auto",audioMode:e.audioMode??"auto"}}(e);return this.destroyed||this.media!==e?null:t}catch(t){if(this.destroyed||this.media!==e)return null;throw t}}async play(){return a(this,t).play()}pause(){a(this,t).pause()}async seek(e){return a(this,t).seek(e)}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}reportError(e){if(this.destroyed)return;const t=e&&"object"===typeof e?Reflect.get(e,"message"):void 0;this.error={code:4,message:"string"===typeof t?t:String(e)},this.networkState=3,this.events.emit("error")}destroy(){if(this.destroyed)return;this.destroyed=!0,this.loadSeq++,a(this,t).invalidate();const e=[];for(const t of[()=>this.loadSession?.cancel(),()=>this.pause(),()=>this.disposeInput(),()=>this.audio.destroy(),()=>this.video.destroy()])try{t()}catch(i){e.push(i)}if(e.length)throw e[0]}get currentTime(){return this.audio.currentTime}get duration(){return this.media?.duration??this.audio.duration??this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}t=new WeakMap;const lc=new WeakMap;function uc(e){let t=lc.get(e);return t||(t={closed:!1,frames:new Set},lc.set(e,t)),t}class dc{constructor({art:e,canvas:t,ctx:i,option:r}){this.art=e,this.canvas=t,this.option=r,this.events=new c,this.engine=new cc({canvas:t,ctx:i,events:this.events,option:r}),this._src=null,this._volume=r.volume??.7,this._muted=!!r.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),r.source?this.src=r.source:e.option?.url&&(this.src=e.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){Promise.resolve(this.engine.seek(Number(e)||0)).catch(()=>{})}get duration(){return this.engine.duration}get buffered(){return this.createTimeRanges(0,this.engine.duration)}get played(){return this.createTimeRanges(0,this.engine.currentTime)}get seekable(){return this.createTimeRanges(0,this.engine.duration)}createTimeRanges(e,t){return function(e,t,i){return!e||Number.isNaN(e)||i<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>t,end:()=>i}}(this.engine.duration,e,t)}get paused(){return this.engine.paused}get playing(){return!this.engine.paused&&!this.engine.ended}get ended(){return this.engine.ended}get seeking(){return this.engine.seeking}get readyState(){return this.engine.readyState}get networkState(){return this.engine.networkState}get error(){return this.engine.error}get playbackRate(){return this._playbackRate}set playbackRate(e){const t=Number(e);Number.isNaN(t)||t<=0||(this._playbackRate=t,this.engine.setPlaybackRate(t),this.events.emit("ratechange"))}get volume(){return this._volume}set volume(e){var t;this._volume=(t=e,Math.max(0,Math.min(1,Number(t)||0))),this._muted=!1,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}get muted(){return this._muted}set muted(e){this._muted=!!e,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}play(){return this.engine.play()}pause(){this.engine.pause()}load(){this._src&&this.engine.load(this._src)}getM3u8State(){return this.engine.getHlsState()}switchM3u8Quality(e){return this.engine.selectHlsQuality(e)}switchM3u8Audio(e){return this.engine.selectHlsAudio(e)}get videoWidth(){return this.engine.videoWidth}get videoHeight(){return this.engine.videoHeight}get poster(){return this.option.poster||""}set poster(e){this.option.poster=e}get autoplay(){return this.option.autoplay||!1}set autoplay(e){}get loop(){return this.option.loop||!1}set loop(e){}get controls(){return!1}set controls(e){}get playsInline(){return!0}set playsInline(e){}get crossOrigin(){return this.option.crossOrigin||""}set crossOrigin(e){}get preload(){return"auto"}set preload(e){}get defaultMuted(){return!1}set defaultMuted(e){}get defaultPlaybackRate(){return 1}set defaultPlaybackRate(e){}canPlayType(e){return"maybe"}getBoundingClientRect(){return this.canvas.getBoundingClientRect()}requestVideoFrameCallback(e){return function(e,t){const i=uc(e);if(i.closed)return 0;const r=requestAnimationFrame(a=>{i.frames.delete(r),i.closed||t(a,{presentationTime:e.engine.currentTime,expectedDisplayTime:a+16.6,width:e.engine.videoWidth,height:e.engine.videoHeight,mediaTime:e.engine.currentTime,presentedFrames:0,processingDuration:0,captureTime:a,receiveTime:a,rtpTimestamp:0})});return i.frames.add(r),r}(this,e)}cancelVideoFrameCallback(e){!function(e,t){uc(e).frames.delete(t),cancelAnimationFrame(t)}(this,e)}setAttribute(e,t){"src"===e?this.src=t:"autoplay"===e?this.autoplay=t:"loop"===e?this.loop=t:"muted"===e?this.muted=!0:Reflect.apply(this.canvas.setAttribute,this.canvas,[e,t])}destroy(){if(function(e){const t=uc(e);if(t.closed)return!1;t.closed=!0;for(const i of t.frames)cancelAnimationFrame(i);return t.frames.clear(),!0}(this))try{this.engine.destroy()}finally{this.events.destroy()}}}return function(e={}){return t=>{const{constructor:i}=t,{createElement:r}=i.utils,a=r("canvas"),s=a.getContext("2d"),n=new dc({art:t,canvas:a,ctx:s,option:e});t.mediabunny=n;const c={};for(const e in a)"function"===typeof a[e]&&(c[e]=a[e].bind(a));const l=new Set([...Object.getOwnPropertyNames(n),...Object.getOwnPropertyNames(Object.getPrototypeOf(n))]);for(const e of l)"constructor"!==e&&(e in a||Object.defineProperty(a,e,{get(){const t=n[e];return"function"===typeof t?t.bind(n):t},set(t){n[e]=t},configurable:!0,enumerable:!0}));for(const e in c)a[e]=(...t)=>c[e](...t);function u(){const e=t.template?.$player;e&&!t.option.autoSize&&Object.assign(a.style,{width:"100%",height:"100%",objectFit:"contain"})}return t.on("resize",u),t.on("video:loadedmetadata",u),function({art:e,shim:t,option:i}){if(i.m3u8)return e.on("video:loadedmetadata",d),e.on("restart",d),{update:d};function r(t){e.controls.cache.has(t)&&e.controls.remove(t)}function a(t){e.setting.find(t)&&e.setting.remove(t)}function s(){r("mediabunny-quality"),a("mediabunny-quality")}function n(){r("mediabunny-audio"),a("mediabunny-audio")}function c(e={}){return e.control||e.setting}async function l(r){const a=i.m3u8?.quality||{};if(!c(a)||!r?.levels.length)return void s();const n=a.auto||"Auto",l=a.title||"Quality",u=a.getName||(e=>e.name||`${e.height}P`),h=r.currentLevel?u(r.currentLevel):n,f=o(r.levels.map(e=>({html:u(e),value:e.id,default:r.currentLevel?.id===e.id})),"html").sort((e,t)=>{const i=r.levels.find(t=>t.id===e.value),a=r.levels.find(e=>e.id===t.value);return(a?.height||0)-(i?.height||0)});f.push({html:n,value:"auto",default:!r.currentLevel});const m=async i=>(await t.switchM3u8Quality(i.value),e.notice.show=`${l}: ${i.html}`,await d(),i.html);a.control&&e.controls.update({name:"mediabunny-quality",position:"right",html:h,style:{padding:"0 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o=[...t.length?[{arrayCompleteness:1,nalUnitType:nt.VPS_NUT,nalUnits:t}]:[],...i.length?[{arrayCompleteness:1,nalUnitType:nt.SPS_NUT,nalUnits:i}]:[],...r.length?[{arrayCompleteness:1,nalUnitType:nt.PPS_NUT,nalUnits:r}]:[],...a.length?[{arrayCompleteness:1,nalUnitType:Pt(a[0][0]),nalUnits:a}]:[]];return{configurationVersion:1,generalProfileSpace:s.generalProfileSpace,generalTierFlag:s.generalTierFlag,generalProfileIdc:s.generalProfileIdc,generalProfileCompatibilityFlags:s.generalProfileCompatibilityFlags,generalConstraintIndicatorFlags:s.generalConstraintIndicatorFlags,generalLevelIdc:s.generalLevelIdc,minSpatialSegmentationIdc:s.minSpatialSegmentationIdc,parallelismType:n,chromaFormatIdc:s.chromaFormatIdc,bitDepthLumaMinus8:s.bitDepthLumaMinus8,bitDepthChromaMinus8:s.bitDepthChromaMinus8,avgFrameRate:0,constantFrameRate:0,numTemporalLayers:s.spsMaxSubLayersMinus1+1,temporalIdNested:s.spsTemporalIdNestingFlag,lengthSizeMinusOne:3,arrays:o}}catch(t){return Ke._error("Error building HEVC 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e.readBits(1)&&e.readBits(1),e.readBits(1)&&(e.readBits(3),s=e.readBits(1),e.readBits(1)&&(i=e.readBits(8),r=e.readBits(8),a=e.readBits(8))),e.readBits(1)&&(F(e),F(e)),e.readBits(1),e.readBits(1),e.readBits(1),e.readBits(1)&&(F(e),F(e),F(e),F(e)),e.readBits(1)&&(e.readBits(32),e.readBits(32),e.readBits(1)&&F(e),e.readBits(1)&&Ft(e,!0,t)),e.readBits(1)&&(e.readBits(1),e.readBits(1),e.readBits(1),n=F(e),F(e),F(e),F(e),F(e)),{pixelAspectRatio:o,colourPrimaries:i,transferCharacteristics:r,matrixCoefficients:a,fullRangeFlag:s,minSpatialSegmentationIdc:n}},Ft=(e,t,i)=>{let r=!1,a=!1,s=!1;r=1===e.readBits(1),a=1===e.readBits(1),(r||a)&&(s=1===e.readBits(1),s&&(e.readBits(8),e.readBits(5),e.readBits(1),e.readBits(5)),e.readBits(4),e.readBits(4),s&&e.readBits(4),e.readBits(5),e.readBits(5),e.readBits(5));for(let n=0;n<=i;n++){let t=!0;1===e.readBits(1)||(t=1===e.readBits(1));let i=!1;t?F(e):i=1===e.readBits(1);let n=1;if(!i){n=F(e)+1}r&&At(e,n,s),a&&At(e,n,s)}},At=(e,t,i)=>{for(let r=0;r{const 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mt(e)})(a,t)},Ot={1:{colourPrimaries:5,transferCharacteristics:6,matrixCoefficients:5},2:{colourPrimaries:1,transferCharacteristics:1,matrixCoefficients:1},3:{colourPrimaries:6,transferCharacteristics:6,matrixCoefficients:6},4:{colourPrimaries:7,transferCharacteristics:7,matrixCoefficients:7},5:{colourPrimaries:9,transferCharacteristics:14,matrixCoefficients:9},7:{colourPrimaries:1,transferCharacteristics:13,matrixCoefficients:0}},zt=e=>{const t=new Qe(e);if(2!==t.readBits(2))return null;const i=t.readBits(1),r=(t.readBits(1)<<1)+i;3===r&&t.skipBits(1);if(1===t.readBits(1))return null;if(0!==t.readBits(1))return null;t.skipBits(2);if(4817730!==t.readBits(24))return null;let a=8;if(r>=2){a=t.readBits(1)?12:10}const s=t.readBits(3);let n=0,o=0;if(7!==s){if(o=t.readBits(1),1===r||3===r){const e=t.readBits(1),i=t.readBits(1);n=e||i?e&&!i?2:1:3,t.skipBits(1)}else n=1}else n=3,o=1;const c=(t.readBits(16)+1)*(t.readBits(16)+1);let l=R(yi).level;for(const d of yi)if(c<=d.maxPictureSize){l=d.level;break}const u=Ot[s];return{profile:r,level:l,bitDepth:a,chromaSubsampling:n,videoFullRangeFlag:o,colourPrimaries:u?.colourPrimaries??2,transferCharacteristics:u?.transferCharacteristics??2,matrixCoefficients:u?.matrixCoefficients??2}},Lt=function*(e){const t=new Qe(e),i=()=>{let e=0;for(let i=0;i<8;i++){const r=t.readAlignedByte();if(e+=(127&r)*2**(7*i),!(128&r))break;if(7===i&&128&r)return null}return e>2**32-1?null:e};for(;t.getBitsLeft()>=8;){t.skipBits(1);const r=t.readBits(4),a=t.readBits(1),s=t.readBits(1);let n;if(t.skipBits(1),a&&t.skipBits(8),s){const e=i();if(null===e)return;n=e}else n=Math.floor(t.getBitsLeft()/8);E(t.pos%8===0),yield{type:r,data:e.subarray(t.pos/8,t.pos/8+n)},t.skipBits(8*n)}},Ut=e=>{for(const{type:t,data:i}of Lt(e)){if(1!==t)continue;const e=new Qe(i),r=e.readBits(3);e.readBits(1);const a=e.readBits(1);let s=0,n=0,o=0;if(a)s=e.readBits(5);else{let t=0;if(e.readBits(1)){e.skipBits(32),e.skipBits(32);if(e.readBits(1)){let t=0;for(;t<32&&!e.readBits(1);)t++;t<32&&e.skipBits(t)}t=e.readBits(1),t&&(o=e.readBits(5),e.skipBits(32),e.skipBits(5),e.skipBits(5))}const i=e.readBits(1),r=e.readBits(5);for(let a=0;a<=r;a++){e.skipBits(12);const r=e.readBits(5);if(0===a&&(s=r),r>7){const t=e.readBits(1);0===a&&(n=t)}if(t){if(e.readBits(1)){const t=o+1;e.skipBits(t),e.skipBits(t),e.skipBits(1)}}if(i){e.readBits(1)&&e.skipBits(4)}}}const c=e.readBits(4),l=e.readBits(4),u=c+1;e.skipBits(u);const d=l+1;e.skipBits(d);let h=0;if(h=a?0:e.readBits(1),h&&(e.skipBits(4),e.skipBits(3)),e.skipBits(1),e.skipBits(1),e.skipBits(1),!a){e.skipBits(1),e.skipBits(1),e.skipBits(1),e.skipBits(1);const t=e.readBits(1);t&&(e.skipBits(1),e.skipBits(1));let i=0;if(i=e.readBits(1)?2:e.readBits(1),i>0){e.readBits(1)||e.skipBits(1)}t&&e.skipBits(3)}e.skipBits(1),e.skipBits(1),e.skipBits(1);const f=e.readBits(1);let m=8;if(2===r&&f){m=e.readBits(1)?12:10}else r<=2&&(m=f?10:8);let p=0;1!==r&&(p=e.readBits(1));let g=2,k=2,y=2;e.readBits(1)&&(g=e.readBits(8),k=e.readBits(8),y=e.readBits(8));let b=0,w=1,T=1,S=0;return p?b=e.readBits(1):1===g&&13===k&&0===y?(b=1,w=0,T=0):(b=e.readBits(1),0===r?(w=1,T=1):1===r?(w=0,T=0):12===m?(w=e.readBits(1),T=w?e.readBits(1):0):(w=1,T=0),w&&T&&(S=e.readBits(2))),{profile:r,level:s,tier:n,bitDepth:m,monochrome:p,chromaSubsamplingX:w,chromaSubsamplingY:T,chromaSamplePosition:S,videoFullRangeFlag:b,colourPrimaries:g,transferCharacteristics:k,matrixCoefficients:y}}return null},qt=e=>{if(e.length<36)return null;const t=N(e);if(1768124518!==t.getUint32(4))return null;return t.getUint16(8)<28?null:{fullRange:!1,colourPrimaries:t.getUint8(22),transferCharacteristics:t.getUint8(23),matrixCoefficients:t.getUint8(24)}},Wt=[480,960,1920,2880,480,960,1920,2880,480,960,1920,2880,480,960,480,960,120,240,480,960,120,240,480,960,120,240,480,960,120,240,480,960],Ht=e=>{if(e.length<7)throw new Error("Setup header is too short.");if(5!==e[0])throw new Error("Wrong packet type in 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t=i.subarray(e.offset,e.offset+e.length),r=ht(t);let a=1;do{let e=0;for(;;){const t=r[a++];if(void 0===t)break;if(e+=t,t<255)break}let t=0;for(;;){const e=r[a++];if(void 0===e)break;if(t+=e,e<255)break}if(e===6){const e=new Qe(r);e.pos=8*a;const t=F(e),i=e.readBits(1);if(0===t&&1===i)return"key"}a+=t}while(a{var i,r;const a=N(e);let s=0;const n=a.getUint32(s,!0);s+=4;const o=O.decode(e.subarray(s,s+n));s+=n,n>0&&(t.raw??(t.raw={}),(i=t.raw).vendor??(i.vendor=o));const c=a.getUint32(s,!0);s+=4;for(let l=0;l0&&(t.trackNumber??(t.trackNumber=i)),r&&Number.isInteger(r)&&r>0&&(t.tracksTotal??(t.tracksTotal=r))}break;case"TRACKTOTAL":{const e=Number.parseInt(l,10);Number.isInteger(e)&&e>0&&(t.tracksTotal??(t.tracksTotal=e))}break;case"DISCNUMBER":{const e=l.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(t.discNumber??(t.discNumber=i)),r&&Number.isInteger(r)&&r>0&&(t.discsTotal??(t.discsTotal=r))}break;case"DISCTOTAL":{const e=Number.parseInt(l,10);Number.isInteger(e)&&e>0&&(t.discsTotal??(t.discsTotal=e))}break;case"DATE":{const e=new Date(l);Number.isNaN(e.getTime())||(t.date??(t.date=e))}break;case"GENRE":t.genre??(t.genre=l);break;case"METADATA_BLOCK_PICTURE":{const e=De(l),i=N(e),r=i.getUint32(0,!1),a=i.getUint32(4,!1),s=String.fromCharCode(...e.subarray(8,8+a)),n=i.getUint32(8+a,!1),o=O.decode(e.subarray(12+a,12+a+n)),c=i.getUint32(a+n+28),u=e.subarray(a+n+32,a+n+32+c);t.images??(t.images=[]),t.images.push({data:u,mimeType:s,kind:3===r?"coverFront":4===r?"coverBack":"unknown",name:void 0,description:o||void 0})}}}},$t=[2,1,2,3,3,4,4,5],Gt=e=>{if(e.length<7)return null;if(11!==e[0]||119!==e[1])return null;const t=new Qe(e);t.skipBits(16),t.skipBits(16);const i=t.readBits(2);if(3===i)return null;const r=t.readBits(6),a=t.readBits(5);if(a>8)return null;const s=t.readBits(3),n=t.readBits(3);0!==(1&n)&&1!==n&&t.skipBits(2),0!==(4&n)&&t.skipBits(2),2===n&&t.skipBits(2);return{fscod:i,bsid:a,bsmod:s,acmod:n,lfeon:t.readBits(1),bitRateCode:Math.floor(r/2)}},Qt=[128,138,192,128,140,192,160,174,240,160,176,240,192,208,288,192,210,288,224,242,336,224,244,336,256,278,384,256,280,384,320,348,480,320,350,480,384,416,576,384,418,576,448,486,672,448,488,672,512,556,768,512,558,768,640,696,960,640,698,960,768,834,1152,768,836,1152,896,974,1344,896,976,1344,1024,1114,1536,1024,1116,1536,1280,1392,1920,1280,1394,1920,1536,1670,2304,1536,1672,2304,1792,1950,2688,1792,1952,2688,2048,2228,3072,2048,2230,3072,2304,2506,3456,2304,2508,3456,2560,2786,3840,2560,2788,3840],Yt=[1,2,3,6],Jt=e=>{if(e.length<6)return null;if(11!==e[0]||119!==e[1])return null;const t=new Qe(e);t.skipBits(16);const i=t.readBits(2);if(t.skipBits(3),0!==i&&2!==i)return null;const r=t.readBits(11),a=t.readBits(2);let s,n=0;3===a?(n=t.readBits(2),s=3):s=t.readBits(2);const o=t.readBits(3),c=t.readBits(1),l=t.readBits(5);if(l<11||l>16)return null;const u=Yt[s];let d;d=a<3?it[a]/1e3:rt[n]/1e3;return{dataRate:Math.round((r+1)*d/(16*u)),substreams:[{fscod:a,fscod2:n,bsid:l,bsmod:0,acmod:o,lfeon:c,numDepSub:0,chanLoc:0}]}},Zt=e=>{const t=e.substreams[0];return E(t),t.fscod<3?it[t.fscod]:null!==t.fscod2&&t.fscod2<3?rt[t.fscod2]:null},ei=e=>{const t=e.substreams[0];E(t);let i=$t[t.acmod]+t.lfeon;if(t.numDepSub>0){const e=[2,2,1,1,2,2,2,1,1];for(let r=0;r<9;r++)t.chanLoc&1<<8-r&&(i+=e[r])}return i},ti=[0,8e3,16e3,32e3,0,0,11025,22050,44100,0,0,12e3,24e3,48e3,96e3,192e3],ii=[32e3,56e3,64e3,96e3,112e3,128e3,192e3,224e3,256e3,32e4,384e3,448e3,512e3,576e3,64e4,768e3,96e4,1024e3,1152e3,128e4,1344e3,1408e3,1411200,1472e3,1536e3,192e4,2048e3,3072e3,384e4,0,0,0],ri=[16,16,20,20,0,24,24,0],ai=[1,2,2,2,2,3,3,4,4,5,6,6,6,7,8,8],si=[1,2,2,2,2,3,18,19,6,7,518,323,83,519,582,535],ni=[32e3,44100,48e3,0],oi=[8e3,16e3,32e3,64e3,128e3,22050,44100,88200,176400,352800,12e3,24e3,48e3,96e3,192e3,384e3],ci=[512,1024,2048,4096],li=e=>{const t=di(e),i=N(e);let r=t?4*Math.ceil(t.frameSize/4):0,a=null;for(;r+4<=e.length&&1683496997===i.getUint32(r);){const t=hi(e.subarray(r));if(!t)break;a??(a=t),r+=t.frameSize}if(t)return{frameSize:a?r:t.frameSize,sampleRate:t.sampleRate,numberOfChannels:t.numberOfChannels,sampleCount:t.sampleCount,channelLayout:t.channelLayout,pcmResolution:t.pcmResolution,bitRate:t.bitRate,core:t,hasExtensions:null!==a};if(!a?.asset)return 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TextDecoder("utf-16be").decode(r);case 13:return new Xe(r,"image/jpeg");case 14:return new Xe(r,"image/png");case 27:return new Xe(r,"image/bmp");default:return r}},Yi=16,Ji=new Uint32Array(256),Zi=new Uint32Array(256),er=new Uint32Array(256),tr=new Uint32Array(256),ir=new Uint32Array(256),rr=new Uint32Array(256),ar=new Uint32Array(10);let sr=!1;class nr{constructor(){this.roundkey=new Uint32Array(44),this.iv=new Uint32Array(Yi/Uint32Array.BYTES_PER_ELEMENT),this.in=new Uint8Array(Yi),this.out=new Uint8Array(Yi),this.inView=new DataView(this.in.buffer),this.outView=new DataView(this.out.buffer)}init({key:e,iv:t}){E(16===e.byteLength),E(16===t.byteLength),sr||(()=>{const e=new Uint8Array(256),t=new Uint8Array(256),i=new Uint8Array(256);for(let s=0,n=1;s<256;s++)i[s]=n,t[n]=s,n=n^n<<1^(128&n?283:0);const r=(e,r)=>e&&r?i[(t[e]+t[r])%255]:0;e[0]=99;for(let s=1;s<256;s++){const r=i[255-t[s]];let a=r^r<<1^r<<2^r<<3^r<<4;a=a>>>8^255&a^99,e[s]=a}for(let s=0;s<256;s++){const t=e[s],i=e.indexOf(s);Ji[s]=t<<24|t<<16|t<<8|t,rr[s]=i<<24|i<<16|i<<8|i;const a=r(i,14)<<24|r(i,9)<<16|r(i,13)<<8|r(i,11);Zi[s]=a,er[s]=a>>>8|a<<24,tr[s]=a>>>16|a<<16,ir[s]=a>>>24|a<<8}let a=1;for(let s=0;s<10;s++)ar[s]=a<<24,a=a<<1^(128&a?283:0);sr=!0})();const i=new DataView(e.buffer,e.byteOffset,e.byteLength),r=new DataView(t.buffer,t.byteOffset,t.byteLength);this.roundkey[0]=i.getUint32(0,!1),this.roundkey[1]=i.getUint32(4,!1),this.roundkey[2]=i.getUint32(8,!1),this.roundkey[3]=i.getUint32(12,!1),this.iv[0]=r.getUint32(0,!1),this.iv[1]=r.getUint32(4,!1),this.iv[2]=r.getUint32(8,!1),this.iv[3]=r.getUint32(12,!1);for(let a=4;a<44;a+=4){const e=this.roundkey[a-1];this.roundkey[a]=this.roundkey[a-4]^4278190080&Ji[e>>>16&255]^16711680&Ji[e>>>8&255]^65280&Ji[e>>>0&255]^255&Ji[e>>>24&255]^ar[a/4-1],this.roundkey[a+1]=this.roundkey[a-3]^this.roundkey[a],this.roundkey[a+2]=this.roundkey[a-2]^this.roundkey[a+1],this.roundkey[a+3]=this.roundkey[a-1]^this.roundkey[a+2]}for(let a=0,s=40;a>>24&255]]^er[255&Ji[t>>>16&255]]^tr[255&Ji[t>>>8&255]]^ir[255&Ji[t>>>0&255]]}}decrypt(){let e=this.inView.getUint32(0,!1)^this.roundkey[0],t=this.inView.getUint32(4,!1)^this.roundkey[1],i=this.inView.getUint32(8,!1)^this.roundkey[2],r=this.inView.getUint32(12,!1)^this.roundkey[3];const a=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),n=this.inView.getUint32(8,!1),o=this.inView.getUint32(12,!1);let c,l,u,d;for(let g=1;g<10;g++){const a=4*g;c=Zi[e>>>24]^er[r>>>16&255]^tr[i>>>8&255]^ir[255&t]^this.roundkey[a],l=Zi[t>>>24]^er[e>>>16&255]^tr[r>>>8&255]^ir[255&i]^this.roundkey[a+1],u=Zi[i>>>24]^er[t>>>16&255]^tr[e>>>8&255]^ir[255&r]^this.roundkey[a+2],d=Zi[r>>>24]^er[i>>>16&255]^tr[t>>>8&255]^ir[255&e]^this.roundkey[a+3],e=c,t=l,i=u,r=d}const h=4278190080&rr[e>>>24&255]^16711680&rr[r>>>16&255]^65280&rr[i>>>8&255]^255&rr[t>>>0&255]^this.roundkey[40],f=4278190080&rr[t>>>24&255]^16711680&rr[e>>>16&255]^65280&rr[r>>>8&255]^255&rr[i>>>0&255]^this.roundkey[41],m=4278190080&rr[i>>>24&255]^16711680&rr[t>>>16&255]^65280&rr[e>>>8&255]^255&rr[r>>>0&255]^this.roundkey[42],p=4278190080&rr[r>>>24&255]^16711680&rr[i>>>16&255]^65280&rr[t>>>8&255]^255&rr[e>>>0&255]^this.roundkey[43];this.outView.setUint32(0,h^this.iv[0],!1),this.outView.setUint32(4,f^this.iv[1],!1),this.outView.setUint32(8,m^this.iv[2],!1),this.outView.setUint32(12,p^this.iv[3],!1),this.iv[0]=a,this.iv[1]=s,this.iv[2]=n,this.iv[3]=o}}class or extends Ui{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.psshBoxes=[],this.currentFragment=null,this.lastReadFragment=null,this.decryptionKeyCache=new Map,this.reader=e._reader}async getTrackBackings(){return await this.readMetadata(),this.tracks.map(e=>e.trackBacking)}async getMimeType(){await this.readMetadata();const e=await this.getTrackBackings(),t=await Promise.all(e.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>"video"===e.info?.type),hasAudio:this.tracks.some(e=>"audio"===e.info?.type),codecStrings:t.filter(Boolean)})}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0,t=!1,i=!1;for(;;){let r=this.reader.requestSliceRange(e,8,16);if(Re(r)&&(r=await r),!r)break;const a=e,s=ji(r);if(!s)break;if("ftyp"===s.name||"styp"===s.name){const e=rc(r,4);this.isQuickTime="qt "===e}else{if("moov"===s.name){let e=this.reader.requestSlice(r.filePos,s.contentSize);if(Re(e)&&(e=await e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice);for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}t=this.isFragmented&&null!==this.reader.fileSize&&this.reader.fileSize>a+s.totalSize,i=!0;break}if("moof"===s.name){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');await this.copyMetadataFromInitInput(this.input._initInput),t=!1,i=!0;break}}e=a+s.totalSize}if(!i&&this.input._initInput&&await this.copyMetadataFromInitInput(this.input._initInput),t){E(null!==this.reader.fileSize);let e=this.reader.requestSlice(this.reader.fileSize-4,4);Re(e)&&(e=await e),E(e);const t=$o(e),i=this.reader.fileSize-t;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(Re(e)&&(e=await e),e){const t=ji(e);if(t&&"mfra"===t.name){let i=this.reader.requestSlice(e.filePos,t.contentSize);Re(i)&&(i=await i),i&&this.readContiguousBoxes(i)}}}}})())}async copyMetadataFromInitInput(e){const t=await e._getDemuxer();if(t.constructor!==or)throw new Error("Init input must match the input's format.");await t.readMetadata(),this.movieTimescale=t.movieTimescale,this.movieDurationInTimescale=t.movieDurationInTimescale,this.metadataTags=t.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=t.fragmentTrackDefaults,this.psshBoxes=t.psshBoxes;for(const i of t.tracks){const e={id:i.id,demuxer:this,trackBacking:null,disposition:i.disposition,timescale:i.timescale,durationInMediaTimescale:i.durationInMediaTimescale,durationInMovieTimescale:i.durationInMovieTimescale,rotation:i.rotation,internalCodecId:i.internalCodecId,name:i.name,languageCode:i.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:i.editListPreviousSegmentDurations,editListOffset:i.editListOffset,encryptionInfo:i.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:i.info};if(i.trackBacking)if(E(e.info),"video"===e.info.type&&-1!==e.info.width){const t=e;e.trackBacking=new lr(t),this.tracks.push(e)}else if("audio"===e.info.type&&-1!==e.info.numberOfChannels){const t=e;e.trackBacking=new ur(t),this.tracks.push(e)}}}getSampleTableForTrack(e){if(e.sampleTable)return e.sampleTable;const t={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=t,null===e.sampleTableByteOffset)return t;E(this.moovSlice);const i=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(i),this.currentTrack=null;if("audio"===e.info?.type&&e.info.codec&&pi.includes(e.info.codec)&&0===t.sampleCompositionTimeOffsets.length){E("audio"===e.info?.type);const i=Bi(e.info.codec),r=[],a=[];for(let s=0;se.startIndex),u=t.sampleTimingEntries[l],d=Z(t.sampleTimingEntries,c,e=>e.startIndex),h=t.sampleTimingEntries[d],f=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,m=h.startDecodeTimestamp+(c-h.startIndex)*h.delta-f,p=R(r);p&&p.delta===m?p.count++:r.push({startIndex:n.startChunkIndex+s,startDecodeTimestamp:f,count:1,delta:m});const g=n.samplesPerChunk*i.sampleSize*e.info.numberOfChannels;a.push(g)}n.startSampleIndex=n.startChunkIndex,n.samplesPerChunk=1}t.sampleTimingEntries=r,t.sampleSizes=a}if(t.sampleCompositionTimeOffsets.length>0){t.presentationTimestamps=[];for(const e of t.sampleTimingEntries)for(let i=0;ie.presentationTimestamp-t.presentationTimestamp),t.presentationTimestampIndexMap=Array(t.presentationTimestamps.length).fill(-1);for(let e=0;ee.moofOffset===a.moofOffset);if(i)pr(s,i.timestamp);else{const e=Z(t,a.moofOffset-1,e=>e.moofOffset);if(-1!==e){const i=t[e];pr(s,i.endTimestamp)}}s.startTimestampIsFinal=!0}const i=Z(t,s.startTimestamp,e=>e.startTimestamp);if(-1!==i&&t[i].moofOffset===a.moofOffset||t.splice(i+1,0,{moofOffset:a.moofOffset,startTimestamp:s.startTimestamp,endTimestamp:s.endTimestamp}),s.encryptionAuxInfo&&e.encryptionInfo){const t=await br(this.reader,e.encryptionInfo,s.encryptionAuxInfo);for(let e=0;e0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;ke(t.languageCode)||(t.languageCode=ue)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=rc(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:{...K},avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=L,this.readContiguousBoxes(e.slice(H,q.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const i=Wo(e);e.skip(3);const r=$o(e);for(let a=0;a0&&(1===n?(e.skip(4),c=8*$o(e),e.skip(8)):2===n&&(e.skip(4),l=ic(e),o=$o(e),e.skip(4),c=$o(e),u=$o(e),e.skip(8))),t.info.numberOfChannels=o,t.info.sampleRate=l,t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+a.totalSize-e.filePos));const d="enca"===s?t.frmaCodecString:s;if(t.frmaCodecString=null,"mp4a"===d);else if("opus"===d)t.info.codec="opus",t.info.sampleRate=xi;else if("flac"===d)t.info.codec="flac";else if("ulaw"===d)t.info.codec="ulaw";else if("alaw"===d)t.info.codec="alaw";else if("ac-3"===d)t.info.codec="ac3";else if("ec-3"===d)t.info.codec="eac3";else if(Si.includes(d))t.info.codec="dts",t.info.dtsFormat=d;else if("twos"===d)8===c?t.info.codec="pcm-s8":16===c?t.info.codec=t.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(Ke._warn(`Unsupported sample size ${c} for codec 'twos'.`),t.info.codec=null);else if("sowt"===d)8===c?t.info.codec="pcm-s8":16===c?t.info.codec="pcm-s16":(Ke._warn(`Unsupported sample size ${c} for codec 'sowt'.`),t.info.codec=null);else if("raw "===d)t.info.codec="pcm-u8";else if("in24"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if("in32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if("fl32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if("fl64"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if("ipcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?16===e?t.info.codec="pcm-s16":24===e?t.info.codec="pcm-s24":32===e?t.info.codec="pcm-s32":(Ke._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null):16===e?t.info.codec="pcm-s16be":24===e?t.info.codec="pcm-s24be":32===e?t.info.codec="pcm-s32be":(Ke._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null)}else if("fpcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?32===e?t.info.codec="pcm-f32":64===e?t.info.codec="pcm-f64":(Ke._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null):32===e?t.info.codec="pcm-f32be":64===e?t.info.codec="pcm-f64be":(Ke._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=c+7>>3,i=Boolean(1&u),r=Boolean(2&u),a=4&u?-1:0;c>0&&c<=64&&(i?32===c&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):a&1<0?(t.encryptionInfo.defaultCryptByteBlock=r>>4,t.encryptionInfo.defaultSkipByteBlock=15&r):(t.encryptionInfo.defaultCryptByteBlock=0,t.encryptionInfo.defaultSkipByteBlock=0),t.encryptionInfo.defaultIsProtected=0!==Wo(e),t.encryptionInfo.defaultPerSampleIvSize=Wo(e),t.encryptionInfo.defaultKid=Q(qo(e,16)),t.encryptionInfo.defaultIsProtected&&0===t.encryptionInfo.defaultPerSampleIvSize){const i=Wo(e),r=new Uint8Array(16);r.set(qo(e,i),0),t.encryptionInfo.defaultConstantIv=r}}break;case"avcC":{const t=this.currentTrack;if(!t)break;if(E(t.info),0===q.contentSize)break;t.info.codecDescription=qo(e,q.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;if(E(t.info),0===q.contentSize)break;t.info.codecDescription=qo(e,q.contentSize)}break;case"vpcC":{const t=this.currentTrack;if(!t)break;E("video"===t.info?.type),e.skip(4);const i=Wo(e),r=Wo(e),a=Wo(e),s=a>>4,n=a>>1&7,o=1&a,c=Wo(e),l=Wo(e),u=Wo(e);t.info.vp9CodecInfo={profile:i,level:r,bitDepth:s,chromaSubsampling:n,videoFullRangeFlag:o,colourPrimaries:c,transferCharacteristics:l,matrixCoefficients:u}}break;case"av1C":{const t=this.currentTrack;if(!t)break;E("video"===t.info?.type),e.skip(1);const i=Wo(e),r=i>>5,a=31&i,s=Wo(e),n=s>>7,o=s>>6&1,c=s>>4&1,l=s>>3&1,u=s>>2&1,d=3&s,h=2===r&&o?s>>5&1?12:10:o?10:8;e.skip(1);const f=qo(e,q.contentSize-4),m=Ut(f);t.info.av1CodecInfo={profile:r,level:a,tier:n,bitDepth:h,monochrome:c,chromaSubsamplingX:l,chromaSubsamplingY:u,chromaSamplePosition:d,videoFullRangeFlag:m?.videoFullRangeFlag??0,colourPrimaries:m?.colourPrimaries??2,transferCharacteristics:m?.transferCharacteristics??2,matrixCoefficients:m?.matrixCoefficients??2}}break;case"colr":{const t=this.currentTrack;if(!t)break;E("video"===t.info?.type);const i=rc(e,4);if("nclx"!==i&&"nclc"!==i)break;const r=Vo(e),a=Vo(e),s=Vo(e);let n;"nclx"===i&&(n=Boolean(128&Wo(e))),t.info.colorSpace={primaries:U[r],transfer:W[a],matrix:V[s],fullRange:n}}break;case"pasp":{const t=this.currentTrack;if(!t)break;E("video"===t.info?.type);const i=$o(e),r=$o(e);i>0&&r>0&&(i>r?t.info.squarePixelWidth=Math.round(t.info.width*i/r):t.info.squarePixelHeight=Math.round(t.info.height*r/i))}break;case"esds":{const t=this.currentTrack;if(!t||"audio"!==t.info?.type)break;e.skip(4);E(3===Wo(e)),$i(e),e.skip(2);const i=Wo(e),r=0!==(64&i),a=0!==(32&i);if(0!==(128&i)&&e.skip(2),r){const t=Wo(e);e.skip(t)}a&&e.skip(2);E(4===Wo(e));const s=$i(e),n=e.filePos,o=Wo(e);if(64===o||103===o?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===o,objectType:null}):105===o||107===o?t.info.codec="mp3":221===o?t.info.codec="vorbis":169===o?t.info.codec="dts":Ke._warn(`Unsupported audio codec (objectTypeIndication ${o}) - discarding track.`),e.skip(12),s>e.filePos-n){E(5===Wo(e));const i=$i(e);if(t.info.codecDescription=qo(e,i),"aac"===t.info.codec){const e=Ze(t.info.codecDescription);null!==e.outputNumberOfChannels&&(t.info.numberOfChannels=e.outputNumberOfChannels),null!==e.outputSampleRate&&(t.info.sampleRate=e.outputSampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type),t.info.pcmLittleEndian=!!(255&Vo(e))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type),e.skip(4);const i=Wo(e);t.info.pcmLittleEndian=Boolean(1&i),t.info.pcmSampleSize=Wo(e)}break;case"dOps":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type),e.skip(1);const i=Wo(e),r=Vo(e),a=$o(e),s=Ko(e),n=Wo(e);let o;o=0!==n?qo(e,2+i):new Uint8Array(0);const c=new Uint8Array(19+o.byteLength),l=new DataView(c.buffer);l.setUint32(0,1332770163,!1),l.setUint32(4,1214603620,!1),l.setUint8(8,1),l.setUint8(9,i),l.setUint16(10,r,!0),l.setUint32(12,a,!0),l.setInt16(16,s,!0),l.setUint8(18,n),c.set(o,19),t.info.codecDescription=c,t.info.numberOfChannels=i}break;case"dfLa":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type),e.skip(4);const i=127,r=128,a=e.filePos;for(;e.filePos>>12,a=1+(i>>9&7);t.info.sampleRate=r,t.info.numberOfChannels=a,e.skip(20)}else e.skip(s);if(a&r)break}const s=e.filePos;e.filePos=a;const n=qo(e,s-a),o=new Uint8Array(4+n.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(n,4),t.info.codecDescription=o}break;case"dac3":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type);const i=qo(e,3),r=new Qe(i),a=r.readBits(2);r.skipBits(8);const s=r.readBits(3),n=r.readBits(1);a<3&&(t.info.sampleRate=it[a]),t.info.numberOfChannels=$t[s]+n}break;case"dec3":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type);const i=(e=>{if(e.length<2)return null;const t=new Qe(e),i=t.readBits(13),r=t.readBits(3),a=[];for(let s=0;s<=r&&!(Math.ceil(t.pos/8)+3>e.length);s++){const e=t.readBits(2),i=t.readBits(5);t.skipBits(1),t.skipBits(1);const r=t.readBits(3),s=t.readBits(3),n=t.readBits(1);t.skipBits(3);const o=t.readBits(4);let c=0;o>0?c=t.readBits(9):t.skipBits(1),a.push({fscod:e,fscod2:null,bsid:i,bsmod:r,acmod:s,lfeon:n,numDepSub:o,chanLoc:c})}return 0===a.length?null:{dataRate:i,substreams:a}})(qo(e,q.contentSize));if(!i){Ke._warn("Invalid dec3 box contents, ignoring.");break}const r=Zt(i);null!==r&&(t.info.sampleRate=r),t.info.numberOfChannels=ei(i)}break;case"ddts":{const t=this.currentTrack;if(!t)break;E("audio"===t.info?.type);const i=(e=>{if(e.length<20)return null;const t=N(e),i=t.getUint32(0);if(0===i)return null;const r=new Qe(e);r.seekToByte(13);const a=r.readBits(2);r.skipBits(5);const s=r.readBits(1),n=r.readBits(6);r.skipBits(14),r.skipBits(1),r.skipBits(3);const o=r.readBits(16);let c=null;return 0!==o?c=fi(o):ne.id===i);if(!r)break;const a=$o(e),s=(12&a)>>2,n=3&a,o=[Wo,Vo,jo,$o],c=o[(48&a)>>4],l=o[s],u=o[n],d=$o(e);for(let h=0;he.timestamp-t.timestamp);for(let e=0;e({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let a=0;ae.id===l);if(!u)break;const d=this.fragmentTrackDefaults.find(e=>e.trackId===l);this.currentTrack=u,u.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:d?.defaultSampleDescriptionIndex??null,defaultSampleDuration:d?.defaultSampleDuration??null,defaultSampleSize:d?.defaultSampleSize??null,defaultSampleFlags:d?.defaultSampleFlags??null,startTimestamp:null,encryptionAuxInfo:null},i?u.currentFragmentState.baseDataOffset=Jo(e):c&&(u.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),r&&(u.currentFragmentState.sampleDescriptionIndex=$o(e)),a&&(u.currentFragmentState.defaultSampleDuration=$o(e)),s&&(u.currentFragmentState.defaultSampleSize=$o(e)),n&&(u.currentFragmentState.defaultSampleFlags=$o(e)),o&&(u.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;E(t.currentFragmentState);const i=Wo(e);e.skip(3);const r=0===i?$o(e):Jo(e);t.currentFragmentState.startTimestamp=r}break;case"trun":{const t=this.currentTrack;if(!t)break;E(this.currentFragment),E(t.currentFragmentState);const i=Wo(e),r=jo(e),a=Boolean(1&r),s=Boolean(4&r),n=Boolean(256&r),o=Boolean(512&r),c=Boolean(1024&r),l=Boolean(2048&r),u=$o(e);let d=null;a&&(d=Qo(e));let h,f=null;s&&(f=$o(e)),this.currentFragment.trackData.has(t.id)?(h=this.currentFragment.trackData.get(t.id),null!==d&&(h.currentOffset=t.currentFragmentState.baseDataOffset+d)):(h={track:t,currentTimestamp:0,currentOffset:t.currentFragmentState.baseDataOffset+(d??0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(t.id,h));for(let m=0;m0&&(a=qo(e,r));const s=yr(t);s.defaultSampleInfoSize=i,s.sampleSizes=a,s.sampleCount=r}break;case"saio":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=Wo(e);if(1&jo(e)){const i=rc(e,4),r=$o(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const r=$o(e);if(0===r)break;r>1&&Ke._warn("Multiple saio entries are not supported; using the first offset only.");let a=0===i?$o(e):Number(Jo(e));this.currentFragment&&(a+=this.currentFragment.moofOffset);yr(t).offset=a}break;case"senc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;E(this.currentFragment);const i=this.currentFragment.trackData.get(t.id);if(!i)break;e.skip(1);const r=jo(e),a=Boolean(2&r),s=$o(e),n=t.encryptionInfo.defaultPerSampleIvSize;E(null!==n);for(let o=0;o0?r.set(qo(e,n),0):r.set(t.encryptionInfo.defaultConstantIv,0);let s=null;if(a){const t=Vo(e);s=[];for(let i=0;i0&&((B=this.metadataTags).trackNumber??(B.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((F=this.metadataTags).tracksTotal??(F.tracksTotal=i))}break;case"trkn":if(a instanceof Uint8Array&&a.length>=6){const e=N(a),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&((A=this.metadataTags).trackNumber??(A.trackNumber=t)),i>0&&((D=this.metadataTags).tracksTotal??(D.tracksTotal=i))}break;case"disc":case"disk":if(a instanceof Uint8Array&&a.length>=6){const e=N(a),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&((M=this.metadataTags).discNumber??(M.discNumber=t)),i>0&&((z=this.metadataTags).discsTotal??(z.discsTotal=i))}}}}}return e.filePos=j,!0}}class cr{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.tracks)if(r.trackBacking.getType()===t&&i++,r===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){const e=this.internalTrack;if(e.durationInMediaTimescale<=0)return null;E(e.trackBacking);const t=await e.trackBacking.getFirstPacket({metadataOnly:!0});return(t?.timestamp??0)+e.durationInMediaTimescale/e.timescale}async getLiveRefreshInterval(){return null}async getFirstPacket(e){const t=await this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)}mapTimestampIntoTimescale(e){return de(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}async getPacket(e,t){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=dr(r,i),s=await this.fetchPacketForSampleIndex(a,t);return kr(r)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=Z(t.presentationTimestamps,i,e=>e.presentationTimestamp);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=ae(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=i);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>r.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.samples.findIndex(e=>e.isKeyFrame);return E(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)}async fetchPacketForSampleIndex(e,t){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=fr(i,e);if(!r)return null;let a;if(t.metadataOnly)a=qi;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.sampleOffset,r.sampleSize);if(Re(t)&&(t=await t),!t)return null;if(a=qo(t,r.sampleSize),this.internalTrack.encryptionInfo){let t=null;if(this.internalTrack.encryptionAuxInfo){const i=await br(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);ee.timestamp),u=-1!==l?this.internalTrack.fragmentLookupTable[l]:null,d=Z(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),h=-1!==d?this.internalTrack.fragmentPositionCache[d]:null,f=Math.max(u?.moofOffset??0,h?.moofOffset??0)||null;let m;for(e?null===f||e.moofOffset>=f?(m=e.moofOffset+e.moofSize,n=e):m=f:m=f??0;;){if(n){const e=n.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=s.reader.requestSliceRange(m,8,16);if(Re(e)&&(e=await e),!e)break;const i=m,l=ji(e);if(!l)break;if("moof"===l.name){n=await s.readFragment(i);const{sampleIndex:e,correctSampleFound:r}=t(n);if(r)return this.fetchPacketInFragment(n,e,a);-1!==e&&(o=n,c=e)}m=i+l.totalSize}if(u&&(!o||o.moofOffset{var e,t,i,r,a;if("avc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("hevc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo&&(2!==(a=this.internalTrack.info.vp9CodecInfo).colourPrimaries||2!==a.transferCharacteristics||2!==a.matrixCoefficients))if("av1"!==this.internalTrack.info.codec||this.internalTrack.info.av1CodecInfo&&(e=>2!==e.colourPrimaries||2!==e.transferCharacteristics||2!==e.matrixCoefficients)(this.internalTrack.info.av1CodecInfo)){if("prores"===this.internalTrack.info.codec&&!this.internalTrack.info.proresCodecInfo){const e=await this.getFirstPacket({});this.internalTrack.info.proresCodecInfo=e&&qt(e.data)}}else{const e=await this.getFirstPacket({}),t=e&&Ut(e.data);t&&(this.internalTrack.info.av1CodecInfo=t)}else{const e=await this.getFirstPacket({}),t=e&&zt(e.data);t&&(this.internalTrack.info.vp9CodecInfo={...this.internalTrack.info.vp9CodecInfo??t,videoFullRangeFlag:t.videoFullRangeFlag,colourPrimaries:t.colourPrimaries,transferCharacteristics:t.transferCharacteristics,matrixCoefficients:t.matrixCoefficients})}else{const e=await this.getFirstPacket({});this.internalTrack.info.hevcCodecInfo=e&&xt(e.data)}else{const e=await this.getFirstPacket({});this.internalTrack.info.avcCodecInfo=e&>(e.data)}if(!j(this.internalTrack.info.colorSpace)){const a=Pi(this.internalTrack.info);(e=this.internalTrack.info.colorSpace).primaries??(e.primaries=a.primaries),(t=this.internalTrack.info.colorSpace).transfer??(t.transfer=a.transfer),(i=this.internalTrack.info.colorSpace).matrix??(i.matrix=a.matrix),(r=this.internalTrack.info.colorSpace).fullRange??(r.fullRange=a.fullRange)}const s={codec:vi(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(s.displayAspectWidth=this.internalTrack.info.squarePixelWidth,s.displayAspectHeight=this.internalTrack.info.squarePixelHeight),s})()):null}}class ur extends cr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=await this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&ui(e.data)}return{codec:Ii(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}})()):null}}const dr=(e,t)=>{if(e.presentationTimestamps){const i=Z(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===i?-1:e.presentationTimestamps[i].sampleIndex}{const i=Z(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===i)return-1;const r=e.sampleTimingEntries[i];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},hr=(e,t)=>{if(!e.keySampleIndices)return dr(e,t);if(e.presentationTimestamps){const i=Z(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===i)return-1;for(let t=i;t>=0;t--){const i=e.presentationTimestamps[t].sampleIndex;if(-1!==J(e.keySampleIndices,i,e=>e))return i}return-1}{const i=dr(e,t),r=Z(e.keySampleIndices,i,e=>e);return e.keySampleIndices[r]??-1}},fr=(e,t)=>{const i=Z(e.sampleTimingEntries,t,e=>e.startIndex),r=e.sampleTimingEntries[i];if(!r||r.startIndex+r.count<=t)return null;let a=r.startDecodeTimestamp+(t-r.startIndex)*r.delta;const s=Z(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),n=e.sampleCompositionTimeOffsets[s];n&&t-n.startIndexe.startSampleIndex),l=e.sampleToChunk[c];E(l);const u=l.startChunkIndex+Math.floor((t-l.startSampleIndex)/l.samplesPerChunk),d=e.chunkOffsets[u],h=l.startSampleIndex+(u-l.startChunkIndex)*l.samplesPerChunk;let f=0,m=d;if(1===e.sampleSizes.length)m+=o*(t-h),f+=o*l.samplesPerChunk;else for(let g=h;ge)}},mr=(e,t)=>{if(!e.keySampleIndices)return t+1;const i=Z(e.keySampleIndices,t,e=>e);return e.keySampleIndices[i+1]??-1},pr=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const i of e.samples)i.presentationTimestamp+=t;for(const i of e.presentationTimestamps)i.presentationTimestamp+=t},gr=e=>{const[t,i]=e,r=Math.atan2(i,t);return Number.isFinite(r)?r*(180/Math.PI):0},kr=e=>0===e.sampleSizes.length,yr=e=>{var t;return e.currentFragmentState?(t=e.currentFragmentState).encryptionAuxInfo??(t.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}):e.encryptionAuxInfo??(e.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null})},br=async(e,t,i)=>{if(i.resolved)return i.resolved;if(null===i.offset||0===i.sampleCount)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(i.defaultSampleInfoSize>0)r=i.defaultSampleInfoSize*i.sampleCount;else{E(i.sampleSizes);for(let e=0;e0?i.defaultSampleInfoSize:i.sampleSizes[o],r=new Uint8Array(16);s>0?r.set(qo(a,s),0):r.set(t.defaultConstantIv,0);let c=null;if(e>s){const e=Vo(a);c=[];for(let t=0;te.defaultConstantIv?{iv:e.defaultConstantIv,subsamples:null}:null,Tr=async(e,t,i,r)=>{E(e.encryptionInfo);const a=e.encryptionInfo;E(null!==a.defaultKid);const s=a.defaultKid;let n;const o=e.demuxer.decryptionKeyCache.get(s);if(o)n=await o;else{if(!e.demuxer.input._formatOptions.isobmff?.resolveKeyId)throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");const t=(async()=>{let t=e.demuxer.psshBoxes;if(r){t=[...t,...r.psshBoxes].filter(e=>null===e.keyIds||e.keyIds.includes(s));for(let e=0;e{E(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;i{const a=new Uint8Array(16);a.set(i.iv,0);const s=await crypto.subtle.importKey("raw",e,{name:"AES-CTR"},!1,["decrypt"]),n=async e=>{const t=await crypto.subtle.decrypt({name:"AES-CTR",counter:a,length:64},s,e);return new Uint8Array(t)};if(!i.subsamples)return n(r);E(null!==t.defaultCryptByteBlock&&null!==t.defaultSkipByteBlock);const o=Pr(i.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock);let c=0;for(const m of o)for(const e of m.perSubsample)c+=e.length;const l=new Uint8Array(c);let u=0;for(const m of o)for(const e of m.perSubsample)l.set(r.subarray(e.offset,e.offset+e.length),u),u+=e.length;const d=await n(l),h=new Uint8Array(r);let f=0;for(const m of o)for(const e of m.perSubsample)h.set(d.subarray(f,f+e.length),e.offset),f+=e.length;return h},vr=(e,t,i,r)=>{const a=new nr;a.init({key:e,iv:i.iv});const s=t.defaultCryptByteBlock,n=t.defaultSkipByteBlock;if(E(null!==s&&null!==n),!i.subsamples){const e=new Uint8Array(r),t=Math.floor(r.length/16);for(let i=0;i{const r=[],a=0!==t||0!==i;let s=0;for(const n of e){s+=n.clearLen;const e=[];if(a){let r=n.protectedLen,a=s;for(;r>0&&!(r<16*t);){const s=16*t;e.push({offset:a,length:s}),a+=s,r-=s;const n=Math.min(16*i,r);a+=n,r-=n}s+=n.protectedLen}else n.protectedLen>0&&e.push({offset:s,length:n.protectedLen}),s+=n.protectedLen;r.push({perSubsample:e})}return r};var Ir,xr;(xr=Ir||(Ir={}))[xr.EBML=440786851]="EBML",xr[xr.EBMLVersion=17030]="EBMLVersion",xr[xr.EBMLReadVersion=17143]="EBMLReadVersion",xr[xr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",xr[xr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",xr[xr.DocType=17026]="DocType",xr[xr.DocTypeVersion=17031]="DocTypeVersion",xr[xr.DocTypeReadVersion=17029]="DocTypeReadVersion",xr[xr.Void=236]="Void",xr[xr.Segment=408125543]="Segment",xr[xr.SeekHead=290298740]="SeekHead",xr[xr.Seek=19899]="Seek",xr[xr.SeekID=21419]="SeekID",xr[xr.SeekPosition=21420]="SeekPosition",xr[xr.Duration=17545]="Duration",xr[xr.Info=357149030]="Info",xr[xr.TimestampScale=2807729]="TimestampScale",xr[xr.MuxingApp=19840]="MuxingApp",xr[xr.WritingApp=22337]="WritingApp",xr[xr.Tracks=374648427]="Tracks",xr[xr.TrackEntry=174]="TrackEntry",xr[xr.TrackNumber=215]="TrackNumber",xr[xr.TrackUID=29637]="TrackUID",xr[xr.TrackType=131]="TrackType",xr[xr.FlagEnabled=185]="FlagEnabled",xr[xr.FlagDefault=136]="FlagDefault",xr[xr.FlagForced=21930]="FlagForced",xr[xr.FlagOriginal=21934]="FlagOriginal",xr[xr.FlagHearingImpaired=21931]="FlagHearingImpaired",xr[xr.FlagVisualImpaired=21932]="FlagVisualImpaired",xr[xr.FlagCommentary=21935]="FlagCommentary",xr[xr.FlagLacing=156]="FlagLacing",xr[xr.Name=21358]="Name",xr[xr.Language=2274716]="Language",xr[xr.LanguageBCP47=2274717]="LanguageBCP47",xr[xr.CodecID=134]="CodecID",xr[xr.CodecPrivate=25506]="CodecPrivate",xr[xr.CodecDelay=22186]="CodecDelay",xr[xr.SeekPreRoll=22203]="SeekPreRoll",xr[xr.DefaultDuration=2352003]="DefaultDuration",xr[xr.Video=224]="Video",xr[xr.PixelWidth=176]="PixelWidth",xr[xr.PixelHeight=186]="PixelHeight",xr[xr.DisplayWidth=21680]="DisplayWidth",xr[xr.DisplayHeight=21690]="DisplayHeight",xr[xr.DisplayUnit=21682]="DisplayUnit",xr[xr.AlphaMode=21440]="AlphaMode",xr[xr.Audio=225]="Audio",xr[xr.SamplingFrequency=181]="SamplingFrequency",xr[xr.Channels=159]="Channels",xr[xr.BitDepth=25188]="BitDepth",xr[xr.SimpleBlock=163]="SimpleBlock",xr[xr.BlockGroup=160]="BlockGroup",xr[xr.Block=161]="Block",xr[xr.BlockAdditions=30113]="BlockAdditions",xr[xr.BlockMore=166]="BlockMore",xr[xr.BlockAdditional=165]="BlockAdditional",xr[xr.BlockAddID=238]="BlockAddID",xr[xr.BlockDuration=155]="BlockDuration",xr[xr.ReferenceBlock=251]="ReferenceBlock",xr[xr.Cluster=524531317]="Cluster",xr[xr.Timestamp=231]="Timestamp",xr[xr.Cues=475249515]="Cues",xr[xr.CuePoint=187]="CuePoint",xr[xr.CueTime=179]="CueTime",xr[xr.CueTrackPositions=183]="CueTrackPositions",xr[xr.CueTrack=247]="CueTrack",xr[xr.CueClusterPosition=241]="CueClusterPosition",xr[xr.Colour=21936]="Colour",xr[xr.MatrixCoefficients=21937]="MatrixCoefficients",xr[xr.TransferCharacteristics=21946]="TransferCharacteristics",xr[xr.Primaries=21947]="Primaries",xr[xr.Range=21945]="Range",xr[xr.Projection=30320]="Projection",xr[xr.ProjectionType=30321]="ProjectionType",xr[xr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",xr[xr.Attachments=423732329]="Attachments",xr[xr.AttachedFile=24999]="AttachedFile",xr[xr.FileDescription=18046]="FileDescription",xr[xr.FileName=18030]="FileName",xr[xr.FileMediaType=18016]="FileMediaType",xr[xr.FileData=18012]="FileData",xr[xr.FileUID=18094]="FileUID",xr[xr.Chapters=272869232]="Chapters",xr[xr.Tags=307544935]="Tags",xr[xr.Tag=29555]="Tag",xr[xr.Targets=25536]="Targets",xr[xr.TargetTypeValue=26826]="TargetTypeValue",xr[xr.TargetType=25546]="TargetType",xr[xr.TagTrackUID=25541]="TagTrackUID",xr[xr.TagEditionUID=25545]="TagEditionUID",xr[xr.TagChapterUID=25540]="TagChapterUID",xr[xr.TagAttachmentUID=25542]="TagAttachmentUID",xr[xr.SimpleTag=26568]="SimpleTag",xr[xr.TagName=17827]="TagName",xr[xr.TagLanguage=17530]="TagLanguage",xr[xr.TagString=17543]="TagString",xr[xr.TagBinary=17541]="TagBinary",xr[xr.ContentEncodings=28032]="ContentEncodings",xr[xr.ContentEncoding=25152]="ContentEncoding",xr[xr.ContentEncodingOrder=20529]="ContentEncodingOrder",xr[xr.ContentEncodingScope=20530]="ContentEncodingScope",xr[xr.ContentCompression=20532]="ContentCompression",xr[xr.ContentCompAlgo=16980]="ContentCompAlgo",xr[xr.ContentCompSettings=16981]="ContentCompSettings",xr[xr.ContentEncryption=20533]="ContentEncryption";const Cr=[Ir.EBML,Ir.Segment],Br=[Ir.SeekHead,Ir.Info,Ir.Cluster,Ir.Tracks,Ir.Cues,Ir.Attachments,Ir.Chapters,Ir.Tags],Er=[...Cr,...Br],_r=16,Rr=e=>{if(e.remainingLength<1)return null;const t=Wo(e);if(e.skip(-1),0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;return e.remainingLength{if(e.remainingLength<1)return null;const t=Wo(e);if(0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;if(e.remainingLength{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r{const t=Rr(e);if(null===t)return null;if(e.remainingLength{if(e.remainingLength<1)return null;if(255===Wo(e))return;e.skip(-1);const t=Fr(e);return null===t?null:72057594037927940!==t?t:void 0},Nr=e=>{E(e.remainingLength>=2);const t=Dr(e);if(null===t)return null;const i=Mr(e);return null===i?null:{id:t,size:i}},Or=(e,t)=>{const i=qo(e,t);let r=0;for(;r{const i=qo(e,t);let r=0;for(;r{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?tc(e):ic(e)},Ur=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;null===r||ss?r:s,found:!1}},qr=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;se.tracks.map(e=>e.trackBacking))}async getMimeType(){await this.readMetadata();const e=await this.getTrackBackings(),t=await Promise.all(e.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>"video"===e.info?.type)),hasAudio:this.segments.some(e=>e.tracks.some(e=>"audio"===e.info?.type)),codecStrings:t.filter(Boolean)})}async getMetadataTags(){await this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&await this.loadSegmentMetadata(t),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e={...e,...t.metadataTags};return e}readMetadata(){return this.readMetadataPromise??(this.readMetadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,_r);if(Re(t)&&(t=await t),!t)break;const i=Nr(t);if(!i)break;const r=i.id;let a=i.size;const s=t.filePos;if(r===Ir.EBML){ia(a);let e=this.reader.requestSlice(s,a);if(Re(e)&&(e=await e),!e)break;this.readContiguousElements(e)}else if(r===Ir.Segment){if(await this.readSegment(s,a),void 0===a)break;if(null===this.reader.fileSize)break}else if(r===Ir.Cluster){if(null===this.reader.fileSize)break;if(void 0===a){a=(await Ur(this.reader,s,Er,this.reader.fileSize)).pos-s}const e=R(this.segments);e&&(e.elementEndPos=s+a)}ia(a),e=s+a}})())}async readSegment(e,t){this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let i=e;for(;null===this.currentSegment.elementEndPos||ie.id===a);if(-1!==o){const e=la[o].flag;this.currentSegment[e]=!0,ia(s);let t=this.reader.requestSlice(n,s);Re(t)&&(t=await t),t&&this.readContiguousElements(t)}else if(a===Ir.Tags||a===Ir.Attachments){a===Ir.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,ia(s);let e=this.reader.requestSlice(n,s);Re(e)&&(e=await e),e&&this.readContiguousElements(e)}else if(a===Ir.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===s)break;i=n+s}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const n of this.currentSegment.seekEntries){const t=la.find(e=>e.id===n.id);if(!t)continue;if(this.currentSegment[t.flag])continue;let i=this.reader.requestSliceRange(e+n.segmentPosition,2,_r);if(Re(i)&&(i=await i),!i)continue;const r=Nr(i);if(!r)continue;const{id:a,size:s}=r;if(a!==t.id)continue;ia(s),this.currentSegment[t.flag]=!0;let o=this.reader.requestSlice(i.filePos,s);Re(o)&&(o=await o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const n of this.currentSegment.tracks)null!==n.defaultDurationNs&&(n.defaultDuration=this.currentSegment.timestampFactor*n.defaultDurationNs/1e9);const r=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const n of this.currentSegment.cuePoints){const e=r.get(n.trackId);e&&e.cuePoints.push(n)}for(const n of this.currentSegment.tracks){n.cuePoints.sort((e,t)=>e.time-t.time);for(let e=0;es&&(s=n.cuePoints.length,a=n);for(const n of this.currentSegment.tracks)0===n.cuePoints.length&&(n.cuePoints=a.cuePoints);this.currentSegment=null}async readCluster(e,t){if(t.lastReadCluster?.elementStartPos===e)return t.lastReadCluster;let i=this.reader.requestSliceRange(e,2,_r);Re(i)&&(i=await i),E(i);const r=e,a=Nr(i);E(a);E(a.id===Ir.Cluster);let s=a.size;const n=i.filePos;if(void 0===s){s=(await Ur(this.reader,n,Er,t.elementEndPos)).pos-n}let o=this.reader.requestSlice(n,s);Re(o)&&(o=await o);const c={segment:t,elementStartPos:r,elementEndPos:n+s,dataStartPos:n,timestamp:-1,trackData:new Map};if(this.currentCluster=c,o){const e=this.readContiguousElements(o,Er);c.elementEndPos=e}for(const[,l]of c.trackData){const e=l.track;E(l.blocks.length>0);let t=!1;for(let r=0;r({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let r=0;r({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const i=l.blocks[l.presentationTimestamps[0].blockIndex],a=l.blocks[R(l.presentationTimestamps).blockIndex];l.startTimestamp=i.timestamp,l.endTimestamp=a.timestamp+a.duration;const s=Z(e.clusterPositionCache,l.startTimestamp,e=>e.startTimestamp);-1!==s&&e.clusterPositionCache[s].elementStartPos===r||e.clusterPositionCache.splice(s+1,0,{elementStartPos:c.elementStartPos,startTimestamp:l.startTimestamp})}return t.lastReadCluster=c,c}getTrackDataInCluster(e,t){let i=e.trackData.get(t);if(!i){const r=e.segment.tracks.find(e=>e.id===t);if(!r)return null;i={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,i)}return i}expandLacedBlocks(e,t){for(let i=0;i=2;){const i=e.filePos;if(!this.traverseElement(e,t))return i}return e.filePos}traverseElement(e,t){const i=Nr(e);if(!i)return!1;if(t&&t.includes(i.id))return!1;const{id:r,size:a}=i,s=e.filePos;switch(ia(a),r){case Ir.DocType:this.isWebM="webm"===Or(e,a);break;case Ir.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(s,a)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case Ir.SeekID:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=Ar(e,a)}break;case Ir.SeekPosition:{const t=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=Ar(e,a)}break;case Ir.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=Ar(e,a),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case Ir.Duration:if(!this.currentSegment)break;this.currentSegment.duration=Lr(e,a);break;case Ir.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:{...Ge,primary:!1},trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(s,a)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>"decompress"!==e.data?.type||e.scope!==sa.Block||e.data.algorithm!==oa.HeaderStripping)&&(Ke._warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,null!==this.currentTrack.info.displayWidth&&null!==this.currentTrack.info.displayHeight){const e=this.currentTrack.info.displayWidth*this.currentTrack.info.height,t=this.currentTrack.info.displayHeight*this.currentTrack.info.width;e>0&&t>0&&(e>t?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*e/t):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*t/e))}if(this.currentTrack.codecId===Wr)this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(this.currentTrack.codecId===Hr)this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(t===Vr)this.currentTrack.info.codec="vp8";else if(t===jr)this.currentTrack.info.codec="vp9";else if(t===Kr)this.currentTrack.info.codec="av1";else if(t===Xr){const e=this.currentTrack.codecPrivate?O.decode(this.currentTrack.codecPrivate):"";Ti.includes(e)&&(this.currentTrack.info.codec="prores",this.currentTrack.info.proresFormat=e)}const e=this.currentTrack;this.currentTrack.trackBacking=new fa(e),this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type){t===$r?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Gr?this.currentTrack.info.codec="mp3":t===Qr?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=xi):t===Yr?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Jr?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Zr?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===ea?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===ta?(this.currentTrack.info.codec="dts","A_DTS/EXPRESS"===this.currentTrack.codecId?this.currentTrack.info.dtsFormat="dtse":"A_DTS/LOSSLESS"===this.currentTrack.codecId&&(this.currentTrack.info.dtsFormat="dtsl")):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack;this.currentTrack.trackBacking=new ma(e),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case Ir.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=Ar(e,a);break;case Ir.TrackType:{if(!this.currentTrack)break;const t=Ar(e,a);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:{...K},alphaMode:!1,proresFormat:null}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null})}break;case Ir.FlagEnabled:if(!this.currentTrack)break;Ar(e,a)||(this.currentTrack=null);break;case Ir.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!Ar(e,a);break;case Ir.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!Ar(e,a);break;case Ir.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!Ar(e,a);break;case Ir.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!Ar(e,a);break;case Ir.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!Ar(e,a);break;case Ir.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!Ar(e,a);break;case Ir.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=Or(e,a);break;case Ir.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=qo(e,a);break;case Ir.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=Ar(e,a);break;case Ir.Name:if(!this.currentTrack)break;this.currentTrack.name=zr(e,a);break;case Ir.Language:if(!this.currentTrack)break;if(this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=Or(e,a),ke(this.currentTrack.languageCode)||(this.currentTrack.languageCode=ue);break;case Ir.LanguageBCP47:{if(!this.currentTrack)break;const t=Or(e,a).split("-")[0];this.currentTrack.languageCode=t||ue,this.currentTrack.hasLanguageBcp47=!0}break;case Ir.Video:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case Ir.PixelWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.width=Ar(e,a);break;case Ir.PixelHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.height=Ar(e,a);break;case Ir.DisplayWidth:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayWidth=Ar(e,a);break;case Ir.DisplayHeight:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayHeight=Ar(e,a);break;case Ir.DisplayUnit:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.displayUnit=Ar(e,a);break;case Ir.AlphaMode:if("video"!==this.currentTrack?.info?.type)break;this.currentTrack.info.alphaMode=1===Ar(e,a);break;case Ir.Colour:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case Ir.MatrixCoefficients:{if("video"!==this.currentTrack?.info?.type)break;const t=Ar(e,a),i=V[t];this.currentTrack.info.colorSpace.matrix=i}break;case Ir.Range:{if("video"!==this.currentTrack?.info?.type)break;const t=Ar(e,a);this.currentTrack.info.colorSpace.fullRange=1===t||2===t?2===t:void 0}break;case Ir.TransferCharacteristics:{if("video"!==this.currentTrack?.info?.type)break;const t=Ar(e,a),i=W[t];this.currentTrack.info.colorSpace.transfer=i}break;case Ir.Primaries:{if("video"!==this.currentTrack?.info?.type)break;const t=Ar(e,a),i=U[t];this.currentTrack.info.colorSpace.primaries=i}break;case Ir.Projection:if("video"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case Ir.ProjectionPoseRoll:{if("video"!==this.currentTrack?.info?.type)break;const t=-Lr(e,a);try{this.currentTrack.info.rotation=_(t)}catch{}}break;case Ir.Audio:if("audio"!==this.currentTrack?.info?.type)break;this.readContiguousElements(e.slice(s,a));break;case Ir.SamplingFrequency:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.sampleRate=Lr(e,a);break;case Ir.Channels:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.numberOfChannels=Ar(e,a);break;case Ir.BitDepth:if("audio"!==this.currentTrack?.info?.type)break;this.currentTrack.info.bitDepth=Ar(e,a);break;case Ir.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(s,a)),this.currentCueTime=null;break;case Ir.CueTime:this.currentCueTime=Ar(e,a);break;case Ir.CueTrackPositions:{if(null===this.currentCueTime)break;E(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(s,a)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case Ir.CueTrack:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=Ar(e,a)}break;case Ir.CueClusterPosition:{const t=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;E(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+Ar(e,a)}break;case Ir.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=Ar(e,a);break;case Ir.SimpleBlock:{if(!this.currentCluster)break;const t=Fr(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=Ko(e),n=Wo(e),o=n>>1&3;let c=!!(128&n);"audio"===i.track.info?.type&&i.track.info.codec&&(c=!0);const l=qo(e,a-(e.filePos-s)),u=i.track.decodingInstructions.length>0;i.blocks.push({timestamp:r,duration:0,isKeyFrame:c,data:l,lacing:o,decoded:!u,postProcessed:!1,mainAdditional:null})}break;case Ir.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(s,a)),this.currentBlock=null;break;case Ir.Block:{if(!this.currentCluster)break;const t=Fr(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=Ko(e),n=Wo(e)>>1&3,o=qo(e,a-(e.filePos-s)),c=i.track.decodingInstructions.length>0;this.currentBlock={timestamp:r,duration:0,isKeyFrame:!0,data:o,lacing:n,decoded:!c,postProcessed:!1,mainAdditional:null},i.blocks.push(this.currentBlock)}break;case Ir.BlockAdditions:this.readContiguousElements(e.slice(s,a));break;case Ir.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(s,a)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case Ir.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=qo(e,a);break;case Ir.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=Ar(e,a);break;case Ir.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=Ar(e,a);break;case Ir.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case Ir.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(s,a));break;case Ir.Targets:this.readContiguousElements(e.slice(s,a));break;case Ir.TargetTypeValue:50!==Ar(e,a)&&(this.currentTagTargetIsMovie=!1);break;case Ir.TagTrackUID:case Ir.TagEditionUID:case Ir.TagChapterUID:case Ir.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case Ir.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(s,a));break;case Ir.TagName:this.currentSimpleTagName=zr(e,a);break;case Ir.TagString:{if(!this.currentSimpleTagName)break;const t=zr(e,a);this.processTagValue(this.currentSimpleTagName,t)}break;case Ir.TagBinary:{if(!this.currentSimpleTagName)break;const t=qo(e,a);this.processTagValue(this.currentSimpleTagName,t)}break;case Ir.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(s,a));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(t.raw??(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new $e(this.currentAttachedFile.fileData,this.currentAttachedFile.fileMediaType??void 0,this.currentAttachedFile.fileName??void 0,this.currentAttachedFile.fileDescription??void 0)),this.currentAttachedFile.fileMediaType?.startsWith("image/")&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let i="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?i="coverFront":t.startsWith("back.")&&(i="coverBack")}t.images??(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:i,name:this.currentAttachedFile.fileName??void 0,description:this.currentAttachedFile.fileDescription??void 0})}this.currentAttachedFile=null}break;case Ir.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let i=0n;for(let r=0;rt.order-e.order);break;case Ir.ContentEncoding:this.currentDecodingInstruction={order:0,scope:sa.Block,data:null},this.readContiguousElements(e.slice(s,a)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case Ir.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=Ar(e,a);break;case Ir.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=Ar(e,a);break;case Ir.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:oa.Zlib,settings:null},this.readContiguousElements(e.slice(s,a));break;case Ir.ContentCompAlgo:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.algorithm=Ar(e,a);break;case Ir.ContentCompSettings:if("decompress"!==this.currentDecodingInstruction?.data?.type)break;this.currentDecodingInstruction.data.settings=qo(e,a);break;case Ir.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=s+a,!0}decodeBlockData(e,t){E(e.decodingInstructions.length>0);let i=t;for(const r of e.decodingInstructions)if(E(r.data),"decompress"===r.data.type)if(r.data.algorithm===oa.HeaderStripping)if(r.data.settings&&r.data.settings.length>0){const e=r.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var i;if(!this.currentSegment?.metadataTags)return;const r=this.currentSegment.metadataTags;if(r.raw??(r.raw={}),(i=r.raw)[e]??(i[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":r.title??(r.title=t);break;case"description":r.description??(r.description=t);break;case"artist":r.artist??(r.artist=t);break;case"album":r.album??(r.album=t);break;case"album_artist":r.albumArtist??(r.albumArtist=t);break;case"genre":r.genre??(r.genre=t);break;case"comment":r.comment??(r.comment=t);break;case"lyrics":r.lyrics??(r.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||(r.date??(r.date=e))}break;case"track_number":case"part_number":{const e=t.split("/"),i=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(r.trackNumber??(r.trackNumber=i)),a&&Number.isInteger(a)&&a>0&&(r.tracksTotal??(r.tracksTotal=a))}break;case"disc_number":case"disc":{const e=t.split("/"),i=Number.parseInt(e[0],10),a=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(r.discNumber??(r.discNumber=i)),a&&Number.isInteger(a)&&a>0&&(r.discsTotal??(r.discsTotal=a))}}}async getDurationFromMetadata(e){if(e.duration<=0)return null;let t=null;for(const r of e.tracks){E(r.trackBacking);const e=await r.trackBacking.getFirstPacket({metadataOnly:!0});e&&(t=Math.min(t??1/0,e.timestamp))}let i=e.duration/e.timestampFactor;return i+=t??0,i}}class ha{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.segments)for(const e of r.tracks)if(e.trackBacking.getType()===t&&i++,e===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return this.internalTrack.demuxer.getDurationFromMetadata(this.internalTrack.segment)}async getLiveRefreshInterval(){return null}async getFirstPacket(e){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)}intoTimescale(e){return de(e*this.internalTrack.segment.timestampFactor)}async getPacket(e,t){const i=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=Z(t.presentationTimestamps,i,e=>e.timestamp);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=ae(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=i);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.blocks.findIndex(e=>e.isKeyFrame);return E(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)}async fetchPacketInCluster(e,t,i){if(-1===t)return null;const r=e.trackData.get(this.internalTrack.id).blocks[t];if(E(r),r.decoded||(r.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,r.data),r.decoded=!0),!r.postProcessed){if("prores"===this.internalTrack.info?.codec){if(!(r.data.length>=8&&105===r.data[4]&&99===r.data[5]&&112===r.data[6]&&102===r.data[7])){const e=new Uint8Array(r.data.length+8);N(e).setUint32(0,e.length,!1),e[4]=105,e[5]=99,e[6]=112,e[7]=102,e.set(r.data,8),r.data=e}}r.postProcessed=!0}const a=i.metadataOnly?qi:r.data,s=r.timestamp/this.internalTrack.segment.timestampFactor,n=r.duration/this.internalTrack.segment.timestampFactor,o={};r.mainAdditional&&"video"===this.internalTrack.info?.type&&this.internalTrack.info.alphaMode&&(o.alpha=i.metadataOnly?qi:r.mainAdditional,o.alphaByteLength=r.mainAdditional.byteLength);const c=new Wi(a,r.isKeyFrame?"key":"delta",s,n,e.dataStartPos+t,r.data.byteLength,o);return this.packetToClusterLocation.set(c,{cluster:e,blockIndex:t}),c}async performClusterLookup(e,t,i,r,a){const{demuxer:s,segment:n}=this.internalTrack;let o=null,c=null,l=-1;if(e){const{blockIndex:i,correctBlockFound:r}=t(e);if(r)return this.fetchPacketInCluster(e,i,a);-1!==i&&(c=e,l=i)}const u=Z(this.internalTrack.cuePoints,i,e=>e.time),d=-1!==u?this.internalTrack.cuePoints[u]:null,h=Z(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),f=-1!==h?this.internalTrack.clusterPositionCache[h]:null,m=Math.max(d?.clusterPosition??0,f?.elementStartPos??0)||null;let p;for(e?null===m||e.elementStartPos>=m?(p=e.elementEndPos,o=e):p=m:p=m??n.clusterSeekStartPos;null===n.elementEndPos||p<=n.elementEndPos-2;){if(o){const e=o.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=s.reader.requestSliceRange(p,2,_r);if(Re(e)&&(e=await e),!e)break;const i=p,u=Nr(e);if(!u||!Br.includes(u.id)&&u.id!==Ir.Void){const e=await qr(s.reader,i,Br,Math.min(n.elementEndPos??1/0,i+ua));if(e){p=e;continue}break}const d=u.id;let h=u.size;const f=e.filePos;if(d===Ir.Cluster){o=await s.readCluster(i,n),h=o.elementEndPos-f;const{blockIndex:e,correctBlockFound:r}=t(o);if(r)return this.fetchPacketInCluster(o,e,a);-1!==e&&(c=o,l=e)}if(void 0===h){E(d!==Ir.Cluster);h=(await Ur(s.reader,f,Er,n.elementEndPos)).pos-f}const m=f+h;if(null===n.elementEndPos){let e=s.reader.requestSliceRange(m,2,_r);if(Re(e)&&(e=await e),!e)break;if(Dr(e)===Ir.Segment){n.elementEndPos=m;break}}p=m}if(d&&(!c||c.elementStartPos{var e,t,i,r;let a=null;("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"prores"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(a=await this.getFirstPacket({}));const s={width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&a?gt(a.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&a?xt(a.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&a?zt(a.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&a?Ut(a.data):null,proresCodecInfo:"prores"===this.internalTrack.info.codec&&a?qt(a.data):null,proresFormat:this.internalTrack.info.proresFormat};if(!j(this.internalTrack.info.colorSpace)){const a=Pi(s);(e=this.internalTrack.info.colorSpace).primaries??(e.primaries=a.primaries),(t=this.internalTrack.info.colorSpace).transfer??(t.transfer=a.transfer),(i=this.internalTrack.info.colorSpace).matrix??(i.matrix=a.matrix),(r=this.internalTrack.info.colorSpace).fullRange??(r.fullRange=a.fullRange)}const n={codec:vi(s),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(n.displayAspectWidth=this.internalTrack.info.squarePixelWidth,n.displayAspectHeight=this.internalTrack.info.squarePixelHeight),n})()):null}}class ma extends ha{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=await this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&ui(e.data)}return{codec:Ii({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo,dtsFormat:this.internalTrack.info.dtsFormat}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}})()):null}}const pa=async(e,t,i,r=null)=>{let a=t;for(;null===i||a=4;){const t=s.filePos,i=$o(s),n=null!==e.fileSize?e.fileSize-a:null,o=Mi(i,n);if(o.header&&(!r||o.header.sampleRate===r.sampleRate&&o.header.mpegVersionId===r.mpegVersionId&&o.header.layer===r.layer&&Li(o.header.channel)===Li(r.channel)))return{header:o.header,startPos:a};s.filePos=t+o.bytesAdvanced,a=s.filePos}}return null};class ga extends Ui{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.firstFrameHeaderPos=null,this.xingFrameHeader=null,this.xingFrameHeaderPos=null,this.loadedSamples=[],this.metadataTags=null,this.xingData=null,this.trackBackings=[],this.readingMutex=new $,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();if(!this.firstFrameHeader&&this.xingFrameHeader&&(this.firstFrameHeader=this.xingFrameHeader,this.firstFrameHeaderPos=this.xingFrameHeaderPos),!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.trackBackings=[new ka(this)]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,uc);if(Re(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=mc(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=await pa(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const i=Di(t.mpegVersionId,t.channel);let r=this.reader.requestSlice(e.startPos+i,4);if(Re(r)&&(r=await r),r){const a=$o(r);if(a===Fi||a===Ai){if(this.xingFrameHeader||(this.xingFrameHeader=t,this.xingFrameHeaderPos=e.startPos),!this.xingData){let t=this.reader.requestSlice(e.startPos+i+4,12);if(Re(t)&&(t=await t),t){const e=qo(t,12),i=N(e),r=i.getUint32(0,!1);this.xingData={frameCount:r&Oi.FrameCount?i.getUint32(4,!1):null,fileSize:r&Oi.FileSize?i.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=t,this.firstFrameHeaderPos=e.startPos);const a=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,s={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:a,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(s),this.nextTimestampInSamples+=t.audioSamplesInFrame}async getMimeType(){return"audio/mpeg"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let i=this.reader.requestSlice(e,uc);if(Re(i)&&(i=await i),!i)break;const r=mc(i);if(!r)break;t=!0;let a=this.reader.requestSlice(i.filePos,r.size);if(Re(a)&&(a=await a),!a)break;pc(a,r,this.metadataTags),e=i.filePos+r.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=lc){let e=this.reader.requestSlice(this.reader.fileSize-lc,lc);Re(e)&&(e=await e),E(e);"TAG"===rc(e,3)&&hc(e,this.metadataTags)}return this.metadataTags}finally{e()}}}class ka{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return E(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){const e=this.demuxer;if(E(null!==e.firstFrameHeader),E(null!==e.firstFrameHeaderPos),e.xingData){if(null!==e.xingData.frameCount)return e.xingData.frameCount*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}else if(null!==e.reader.fileSize){const s=(t=e.firstFrameHeader.lowSamplingFrequency,i=e.firstFrameHeader.layer,r=e.firstFrameHeader.bitrate,a=e.firstFrameHeader.sampleRate,0===i?0:1===i?144*r/(a<e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}}async getPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=Z(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1>>0&4294967295}const wa=e=>{const t=N(e),i=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let a=0;a>>24^t])>>>0}return t.setUint32(22,i,!0),r},Ta=(e,t,i)=>{let r=0,a=null;if(e.length>0)if("vorbis"===t.codec){E(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,n=(e[0]&s)>>1;if(n>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=i;const c=t.vorbisInfo.modeBlockflags[n];if(a=t.vorbisInfo.blocksizes[c],1===c){const i=1+(1|s),r=e[0]&i?1:0;o=t.vorbisInfo.blocksizes[r]}r=null!==o?o+a>>2:0}else if("opus"===t.codec){r=(e=>{const t=e[0]>>3,i=3&e[0];let r;return r=0===i?1:1===i||2===i?2:63&e[1],{durationInSamples:Wt[t]*r}})(e).durationInSamples}return{durationInSamples:r,vorbisBlockSize:a}},Sa=27,va=282,Pa=e=>{const t=e.filePos;if(Go(e)!==ya)return null;e.skip(1);const i=Wo(e),r=ec(e),a=Go(e),s=Go(e),n=Go(e),o=Wo(e),c=new Uint8Array(o);for(let d=0;de+t,0);return{headerStartPos:t,totalSize:l+u,dataStartPos:t+l,dataSize:u,headerType:i,granulePosition:r,serialNumber:a,sequenceNumber:s,checksum:n,lacingValues:c}},Ia=(e,t)=>{for(;e.filePos>>8&255)===i||(t>>>16&255)===i||(t>>>24&255)===i){if(e.skip(-4),t===ya)return!0;e.skip(1)}}return!1};class xa extends Ui{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.trackBackings=[],this.metadataTags={},this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=0;for(;;){let t=this.reader.requestSliceRange(e,Sa,va);if(Re(t)&&(t=await t),!t)break;const i=Pa(t);if(!i)break;if(!!!(2&i.headerType))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(const t of this.bitstreams){const e=await this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?await this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&await this.readOpusMetadata(e,t),null!==t.codecInfo.codec&&this.trackBackings.push(new Ca(t,this)))}})())}async readVorbisMetadata(e,t){let i=await this.findNextPacketStart(e);if(!i)return;const r=await this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;if(i=await this.findNextPacketStart(r),!i)return;const a=await this.readPacket(i.startPage,i.startSegmentIndex);if(!a)return;if(3!==r.data[0]||5!==a.data[0])return;const s=[],n=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};n(e.data.length),n(r.data.length);const o=new Uint8Array(1+s.length+e.data.length+r.data.length+a.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(r.data,1+s.length+e.data.length),o.set(a.data,1+s.length+e.data.length+r.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=a;const c=N(e.data);t.numberOfChannels=c.getUint8(11),t.sampleRate=c.getUint32(12,!0);const l=c.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&l),1<<(l>>4)],modeBlockflags:Ht(a.data).modeBlockflags},Xt(r.data.subarray(7),this.metadataTags)}async readOpusMetadata(e,t){const i=await this.findNextPacketStart(e);if(!i)return;const r=await this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=r;const a=(e=>{const t=N(e),i=t.getUint8(9),r=t.getUint16(10,!0),a=t.getUint32(12,!0),s=t.getInt16(16,!0),n=t.getUint8(18);let o=null;return n&&(o=e.subarray(19,21+i)),{outputChannelCount:i,preSkip:r,inputSampleRate:a,outputGain:s,channelMappingFamily:n,channelMappingTable:o}})(e.data);t.numberOfChannels=a.outputChannelCount,t.sampleRate=xi,t.codecInfo.opusInfo={preSkip:a.preSkip},Xt(r.data.subarray(8),this.metadataTags)}async readPacket(e,t){E(te+t.length,0);if(0===o)return null;const c=new Uint8Array(o);let l=0;for(let u=0;u{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(await Promise.all(this.trackBackings.map(e=>e.getDecoderConfig().then(e=>e?.codec??null)))).filter(Boolean)})}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}class Ca{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new $,this.internalSampleRate="opus"===e.codecInfo.codec?xi:e.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){const e=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return E(-1!==e),e+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}async getDecoderConfig(){return E(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:this.bitstream.description??void 0}}getName(){return null}getLanguageCode(){return ue}getDisposition(){return{...Ge,primary:!1}}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(E(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,i){if(!e)return null;const{durationInSamples:r,vorbisBlockSize:a}=Ta(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new Wi(i.metadataOnly?qi:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,r/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:r,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:a}),s}async getFirstPacket(e){E(this.bitstream.lastMetadataPacket);const t=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(E(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const r=await this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(r,{timestampInSamples:i,vorbisLastBlocksize:null},e)}async getNextPacket(e,t){const i=this.encodedPacketToMetadata.get(e);if(!i)throw new Error("Packet was not created from this track.");const r=await this.demuxer.findNextPacketStart(i.packet);if(!r)return null;const a=i.timestampInSamples+i.durationInSamples,s=await this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:a,vorbisLastBlocksize:i.vorbisBlockSize},t)}async getPacket(e,t){if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const i=de(e*this.internalSampleRate);if(0===i)return this.getFirstPacket(t);if(i<0)return null;E(this.bitstream.lastMetadataPacket);const r=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!r)return null;let a=r.startPage,s=this.demuxer.reader.fileSize;const n=[a];e:for(;a.headerStartPos+a.totalSizei?s=l.headerStartPos:(a=l,n.push(l));continue e}r=l.headerStartPos+l.totalSize}}let o=r.startPage;for(const k of n){if(k.granulePosition===a.granulePosition)break;(!o||k.headerStartPos>o.headerStartPos)&&(o=k)}let c=o;const l=[c];for(;c.serialNumber!==this.bitstream.serialNumber||c.granulePosition!==a.granulePosition;){const e=c.headerStartPos+c.totalSize;let t=this.demuxer.reader.requestSliceRange(e,Sa,va);Re(t)&&(t=await t),E(t);const i=Pa(t);E(i),c=i,c.serialNumber===this.bitstream.serialNumber&&l.push(c)}E(-1!==c.granulePosition);let u,d,h=null,f=c,m=0;if(c.headerStartPos===r.startPage.headerStartPos)u=this.granulePositionToTimestampInSamples(0),d=!0,h=0;else{u=0,d=!1;for(let t=c.lacingValues.length-1;t>=0;t--){if(c.lacingValues[t]<255){h=t+1;break}}if(null===h)throw new Error("Invalid page with granule position: no packets end on this page.");m=h-1;const e={data:qi,endPage:f,endSegmentIndex:m};if(await this.demuxer.findNextPacketStart(e)){const e=Ea(l,c,h);E(e);const t=Ba(l,e.page,e.segmentIndex);t&&(c=t.page,h=t.segmentIndex)}else for(;;){const e=Ea(l,c,h);if(!e)break;const t=Ba(l,e.page,e.segmentIndex);if(!t)break;if(c=t.page,h=t.segmentIndex,e.page.headerStartPos!==f.headerStartPos){f=e.page,m=e.segmentIndex;break}}}let p=null,g=null;for(;null!==c;){E(null!==h);const e=await this.demuxer.readPacket(c,h);if(!e)break;if(!(c.headerStartPos===r.startPage.headerStartPos&&hi||Math.max(a.timestampInSamples,0)===i))break}const a=await this.demuxer.findNextPacketStart(e);if(!a)break;c=a.startPage,h=a.startSegmentIndex}return p}async getPacketSequential(e,t){const i=await this.sequentialScanMutex.acquire();try{const i=de(e*this.internalSampleRate);e=i/this.internalSampleRate;const r=Z(this.sequentialScanCache,i,e=>e.timestampInSamples);let a;if(-1!==r){const e=this.sequentialScanCache[r];a=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else a=await this.getFirstPacket(t);let s=0;for(;a&&a.timestampe)break;if(a=i,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(a);E(e),this.sequentialScanCache.length>0&&E(R(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return a}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Ba=(e,t,i)=>{let r=t,a=i;e:for(;;){for(a--;a>=0;a--){if(r.lacingValues[a]<255){a++;break e}}E(-1===a);if(!(1&r.headerType)){a=0;break}const t=re(e,e=>e.headerStartPos{if(i>0)return{page:t,segmentIndex:i-1};const r=re(e,e=>e.headerStartPos{let e=this.reader.requestSlice(0,12);Re(e)&&(e=await e),E(e);const t=rc(e,4),i="RIFX"!==t,r="RF64"===t,a=Xo(e,i);let s=r?this.reader.fileSize:Math.min(a+8,this.reader.fileSize??1/0);if("WAVE"!==rc(e,4))throw new Error("Invalid WAVE file - wrong format");let n=0,o=null,c=e.filePos;for(;null===s||c=18&&357!==a){const e=Ho(r,i),s=t-18;if(Math.min(s,e)>=22&&a===_a.EXTENSIBLE){r.skip(6);const e=qo(r,16);a=e[0]|e[1]<<8}}if(a!==_a.MULAW&&a!==_a.ALAW||(c=8),a!==_a.PCM&&a!==_a.IEEE_FLOAT&&a!==_a.ALAW&&a!==_a.MULAW)throw new Error(`Unsupported WAVE codec (format tag ${a}). Only integer/float PCM, A-law, and \u03bc-law are supported.`);if(a===_a.PCM&&![8,16,24,32].includes(c))throw new Error(`Unsupported WAVE PCM bit depth (${c}). Only 8, 16, 24, and 32 bits are supported.`);if(a===_a.IEEE_FLOAT&&![32,64].includes(c))throw new Error(`Unsupported WAVE float bit depth (${c}). Only 32 and 64 bits are supported.`);this.audioInfo={format:a,numberOfChannels:s,sampleRate:n,sampleSizeInBytes:Math.ceil(c/8),blockSizeInBytes:o}}async parseListChunk(e,t,i){var r,a,s,n,o,c,l,u,d,h,f;let m=this.reader.requestSlice(e,t);if(Re(m)&&(m=await m),!m)return;const p=rc(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=rc(m,4),t=Xo(m,i),p=qo(m,t);let k=0;for(let i=0;i0&&((c=this.metadataTags).trackNumber??(c.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((l=this.metadataTags).tracksTotal??(l.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||((u=this.metadataTags).date??(u.date=e))}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&((d=this.metadataTags).date??(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":(h=this.metadataTags).genre??(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":(f=this.metadataTags).comment??(f.comment=y)}g+=8+t+(1&t)}}async parseId3Chunk(e,t){let i=this.reader.requestSlice(e,t);if(Re(i)&&(i=await i),!i)return;const r=mc(i);if(r){const a=t-uc;if(r.size=Math.min(r.size,a),r.size>0){const t=i.slice(e+uc,r.size);pc(t,r,this.metadataTags)}}}getCodec(){if(E(this.audioInfo),this.audioInfo.format===_a.MULAW)return"ulaw";if(this.audioInfo.format===_a.ALAW)return"alaw";if(this.audioInfo.format===_a.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}if(this.audioInfo.format===_a.IEEE_FLOAT){if(4===this.audioInfo.sampleSizeInBytes)return"pcm-f32";if(8===this.audioInfo.sampleSizeInBytes)return"pcm-f64"}E(!1)}async getMimeType(){return"audio/wav"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}}const Aa=2048;class Da{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.format}async getDecoderConfig(){const e=this.demuxer.getCodec();return e?(E(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null}getNumberOfChannels(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return E(-1!==this.demuxer.dataSize),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return ue}getDisposition(){return{...Ge}}async getPacketAtIndex(e,t){E(e>=0),E(this.demuxer.audioInfo);const i=e*Aa*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const r=Math.min(Aa*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);if(Re(e)&&(e=await e),!e)return null}let a;if(t.metadataOnly)a=qi;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);Re(e)&&(e=await e),E(e),a=qo(e,r)}const s=e*Aa/this.demuxer.audioInfo.sampleRate,n=r/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,this.demuxer.lastKnownPacketIndex),new Wi(a,"key",s,n,e,r)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getPacket(e,t){E(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/Aa,(this.demuxer.dataSize-1)/(Aa*this.demuxer.audioInfo.blockSizeInBytes)));if(i<0)return null;const r=await this.getPacketAtIndex(i,t);if(r)return r;if(0===i)return null;E(null===this.demuxer.reader.fileSize);let a=await this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;a;){const e=await this.getNextPacket(a,t);if(!e)break;a=e}return a}getNextPacket(e,t){E(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/Aa);return this.getPacketAtIndex(i+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Ma=e=>{const t=e.filePos,i=qo(e,9),r=new Qe(i);if(4095!==r.readBits(12))return null;r.skipBits(1);if(0!==r.readBits(2))return null;const a=r.readBits(1),s=r.readBits(2)+1,n=r.readBits(4);if(15===n)return null;r.skipBits(1);const o=r.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);const c=r.readBits(13);r.skipBits(11);const l=r.readBits(2)+1;if(1!==l)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===a?e.filePos-=2:u=r.readBits(16),{objectType:s,samplingFrequencyIndex:n,channelConfiguration:o,frameLength:c,numberOfAacFrames:l,crcCheck:u,startPos:t}},Na=1024;class Oa extends Ui{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.trackBackings=[],this.readingMutex=new $,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();E(this.firstFrameHeader),this.trackBackings=[new za(this)]})())}async advanceReader(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,uc);if(Re(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=mc(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(Re(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const t=Ma(e);if(!t)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&t.startPos+t.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=t);const i=Ye[t.samplingFrequencyIndex];E(void 0!==i);const r=Na/i,a={timestamp:this.nextTimestampInSamples/i,duration:r,dataStart:t.startPos,dataSize:t.frameLength};this.loadedSamples.push(a),this.nextTimestampInSamples+=Na,this.lastLoadedPos=t.startPos+t.frameLength}async getMimeType(){return"audio/aac"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){const e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0;for(;;){let t=this.reader.requestSlice(e,uc);if(Re(t)&&(t=await t),!t)break;const i=mc(t);if(!i)break;let r=this.reader.requestSlice(t.filePos,i.size);if(Re(r)&&(r=await r),!r)break;pc(r,i,this.metadataTags),e=t.filePos+i.size}return this.metadataTags}finally{e()}}}class za{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/Na}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return ue}getCodec(){return"aac"}getInternalCodecId(){return E(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){E(this.demuxer.firstFrameHeader);const e=Je[this.demuxer.firstFrameHeader.channelConfiguration];return E(void 0!==e),e}getSampleRate(){E(this.demuxer.firstFrameHeader);const e=Ye[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return E(void 0!==e),e}getDisposition(){return{...Ge}}async getDecoderConfig(){return E(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}}async getPacketAtIndex(e,t){if(-1===e)return null;const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=qi;else{let e=this.demuxer.reader.requestSlice(i.dataStart,i.dataSize);if(Re(e)&&(e=await e),!e)return null;r=qo(e,i.dataSize)}return new Wi(r,"key",i.timestamp,i.duration,e,i.dataSize)}getFirstPacket(e){return this.getPacketAtIndex(0,e)}async getNextPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{const i=J(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}}async getPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=Z(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1{var e;let t=0;for(;;){let e=this.reader.requestSlice(t,uc);if(Re(e)&&(e=await e),!e)return void(this.lastSampleLoaded=!0);const i=mc(e);if(!i)break;let r=this.reader.requestSlice(e.filePos,i.size);Re(r)&&(r=await r),E(r),pc(r,i,this.metadataTags),t=e.filePos+i.size}for(t+=4;null===this.reader.fileSize||ts.end-6)return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:s.end-e,isLastFrame:!0};if(255===Wo(s)){const t=s.filePos;if(Wo(s)!==(1===this.blockingBit?249:248)){s.filePos=t;continue}s.skip(-2);const i=s.filePos-e,r=this.readFlacFrameHeader({slice:s,isFirstPacket:!1});if(!r){s.filePos=t;continue}if(0===this.blockingBit){if(r.num-n.num!==1){s.filePos=t;continue}}else if(r.num-n.num!==n.blockSize){s.filePos=t;continue}return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:i,isLastFrame:!1}}}}readFlacFrameHeader({slice:e,isFirstPacket:t}){const i=e.filePos,r=qo(e,4),a=new Qe(r);if(32764!==a.readBits(15))return null;if(null===this.blockingBit){E(t);const e=a.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){E(!t);if(1!==a.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");E(!t);if(0!==a.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*2**e:6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?2**e:null)(a.readBits(4));if(!s)return null;E(this.audioInfo);const n=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(a.readBits(4),this.audioInfo.sampleRate);if(!n)return null;a.readBits(4),a.readBits(3);if(0!==a.readBits(1))return null;const o=(e=>{let t=0;const i=new Qe(qo(e,1));for(;1===i.readBits(1);)t++;if(0===t)return i.readBits(7);const r=[],a=t-1,s=new Qe(qo(e,a)),n=8-t-1;for(let o=0;oe|t<"uncommon-u16"===t?Vo(e)+1:"uncommon-u8"===t?Wo(e)+1:"number"===typeof t?t:(se(t),void E(!1)))(e,s),l=((e,t)=>"uncommon-u16"===t?Vo(e):"uncommon-u16-10"===t?10*Vo(e):"uncommon-u8"===t?Wo(e):"number"===typeof t?t:null)(e,n);if(null===l)return null;if(l!==this.audioInfo.sampleRate)return null;const u=e.filePos-i,d=Wo(e);e.skip(-u),e.skip(-1);const h=(e=>{let t=0;for(const i of e){t^=i;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(qo(e,u));return d!==h?null:{num:o,blockSize:c,sampleRate:l}}async advanceReader(){await this.readMetadata(),E(null!==this.lastLoadedPos),E(this.audioInfo);const e=this.lastLoadedPos,t=await this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],r={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(r),t.isLastFrame&&(this.lastSampleLoaded=!0)}}class Ua{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return ue}getTimeResolution(){return E(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return E(this.demuxer.audioInfo),0===this.demuxer.audioInfo.totalSamples?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getDisposition(){return{...Ge}}async getDecoderConfig(){return E(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}}async getPacket(e,t){if(E(this.demuxer.audioInfo),e<0)return null;const i=await this.demuxer.readingMutex.acquire();try{for(;;){const i=Z(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===i){await this.demuxer.advanceReader();continue}const r=this.demuxer.loadedSamples[i],a=r.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(a+r.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(i,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);await this.demuxer.advanceReader()}}finally{i()}}async getNextPacket(e,t){const i=await this.demuxer.readingMutex.acquire();try{const i=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}async getPacketAtIndex(e,t){const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=qi;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(Re(e)&&(e=await e),!e)return null;r=qo(e,i.byteSize)}E(this.demuxer.audioInfo);const a=i.blockOffset/this.demuxer.audioInfo.sampleRate,s=i.blockSize/this.demuxer.audioInfo.sampleRate;return new Wi(r,"key",a,s,e,i.byteSize)}async getFirstPacket(e){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)}}const qa=9e4,Wa=2**33,Ha=188,Va="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",ja=new Set([133,134,162]),Ka=new Set;class Xa extends Ui{constructor(e){super(e),this.metadataPromise=null,this.elementaryStreams=[],this.trackBackingEntries=[],this.packetOffset=0,this.packetStride=-1,this.sectionEndPositions=[],this.seekChunkSize=5242880,this.minReferencePointByteDistance=-1,this.timestampWrapInfo=null,this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{let e=this.reader.requestSlice(0,205);Re(e)&&(e=await e),E(e);const t=qo(e,205);if(71===t[0]&&71===t[188])this.packetOffset=0,this.packetStride=Ha;else if(71===t[0]&&71===t[204])this.packetOffset=0,this.packetStride=204;else{if(71!==t[4]||71!==t[196])throw new Error("Unreachable.");this.packetOffset=4,this.packetStride=192}this.minReferencePointByteDistance=256*this.packetStride;let i=this.packetOffset,r=null,a=!1,s=!1;for(;;){const e=await this.readPacketHeader(i);if(!e)break;if(0===e.payloadUnitStartIndicator){i+=this.packetStride;continue}if(s&&!this.elementaryStreams.some(t=>t.pid===e.pid)){i+=this.packetStride;continue}const t=await this.readSection(i,!0,!s);if(!t)break;const n=3,o=32;let c=!1;if(!s&&0!==t.pid){if(!(0===t.payload[0]&&0===t.payload[1]&&1===t.payload[2])){const e=new Qe(t.payload),i=e.readAlignedByte();e.skipBits(8*i);c=2===e.readBits(8)}}if(0!==t.pid||a)if(t.pid!==r&&!c||s){const e=this.elementaryStreams.find(e=>e.pid===t.pid);e:if(e&&!e.initialized){const i=Ga(this,t,!0);if(!i)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${e.pid}`);if(e.firstSection=t,e.canBeTrustedWithKeyPackets=1===t.randomAccessIndicator,this.input._initInput){const i=(await this.input._initInput._getDemuxer()).elementaryStreams.find(i=>i.pid===t.pid&&i.info.codec===e.info.codec);if(i){e.info=i.info,e.initialized=!0;break e}}const r=new es(e,i);if("video"===e.info.type){for(;;){if(r.suppliedPacket=null,await r.markNextPacket(),"avc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(e.info.avcCodecInfo=gt(r.suppliedPacket.data),!e.info.avcCodecInfo)continue;const t=e.info.avcCodecInfo.sequenceParameterSets[0];E(t);const i=wt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight;const a=i.pixelAspectRatio.num,s=i.pixelAspectRatio.den;a>0&&s>0&&(a>s?(e.info.squarePixelWidth=Math.round(e.info.width*a/s),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*s/a))),e.info.colorSpace={primaries:U[i.colourPrimaries],transfer:W[i.transferCharacteristics],matrix:V[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}if("hevc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(e.info.hevcCodecInfo=xt(r.suppliedPacket.data),!e.info.hevcCodecInfo)continue;const t=e.info.hevcCodecInfo.arrays.find(e=>e.nalUnitType===nt.SPS_NUT).nalUnits[0];E(t);const i=It(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight,i.pixelAspectRatio.num>i.pixelAspectRatio.den?(e.info.squarePixelWidth=Math.round(e.info.width*i.pixelAspectRatio.num/i.pixelAspectRatio.den),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*i.pixelAspectRatio.den/i.pixelAspectRatio.num)),e.info.colorSpace={primaries:U[i.colourPrimaries],transfer:W[i.transferCharacteristics],matrix:V[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}throw new Error("Unhandled.")}e.info.decoderConfig={codec:vi({width:e.info.width,height:e.info.height,codec:e.info.codec,codecDescription:null,colorSpace:e.info.colorSpace,avcType:1,avcCodecInfo:e.info.avcCodecInfo,hevcCodecInfo:e.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null,proresFormat:null}),codedWidth:e.info.width,codedHeight:e.info.height,colorSpace:e.info.colorSpace},e.info.width===e.info.squarePixelWidth&&e.info.height===e.info.squarePixelHeight||(e.info.decoderConfig.displayAspectWidth=e.info.squarePixelWidth,e.info.decoderConfig.displayAspectHeight=e.info.squarePixelHeight),e.initialized=!0}else{if(await r.markNextPacket(),!r.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${e.pid}`);if("aac"===e.info.codec){const t=Lo.tempFromBytes(r.suppliedPacket.data),i=Ma(t);if(!i)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");e.info.aacCodecInfo={isMpeg2:!1,objectType:i.objectType},e.info.numberOfChannels=Je[i.channelConfiguration],e.info.sampleRate=Ye[i.samplingFrequencyIndex]}else if("mp3"===e.info.codec){const t=$o(Lo.tempFromBytes(r.suppliedPacket.data)),i=Mi(t,r.suppliedPacket.data.byteLength);if(!i.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");e.info.numberOfChannels=Li(i.header.channel),e.info.sampleRate=i.header.sampleRate}else if("ac3"===e.info.codec){const t=Gt(r.suppliedPacket.data);if(!t)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(3===t.fscod)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=$t[t.acmod]+t.lfeon,e.info.sampleRate=it[t.fscod]}else if("eac3"===e.info.codec){const t=Jt(r.suppliedPacket.data);if(!t)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");const i=Zt(t);if(null===i)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=ei(t),e.info.sampleRate=i}else{if("dts"!==e.info.codec)throw new Error("Unhandled.");{const t=li(r.suppliedPacket.data);if(!t)throw new Error("Invalid DTS audio stream; could not read frame header from first packet.");e.info.numberOfChannels=t.numberOfChannels,e.info.sampleRate=t.sampleRate,t.core&&(e.info.dtsFormat=t.hasExtensions?"dtsh":"dtsc")}}e.info.decoderConfig={codec:Ii({codec:e.info.codec,codecDescription:null,aacCodecInfo:e.info.aacCodecInfo,dtsFormat:e.info.dtsFormat}),numberOfChannels:e.info.numberOfChannels,sampleRate:e.info.sampleRate},e.initialized=!0}}}else{const e=new Qe(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(12);const r=e.readBits(12);e.skipBits(43),e.readBits(13),e.skipBits(6);const a=e.readBits(10),c=e.pos+8*a;let l=!1;for(;e.pos=4){const t=e.readBits(32);l||(l=1212435798===t||1212436562===t)}e.pos=r}for(e.pos=c;8*(r+n)-e.pos>o;){const t=e.readBits(8);e.skipBits(3);const i=e.readBits(13);e.skipBits(6);const r=e.readBits(10),a=e.pos+8*r;let s=!1,n=!1,o=!1;for(;e.pos=4){const t=e.readBits(32);o||(o=1146376960===(4294967040&t))}e.pos=r}let c=null;const u=l&&ja.has(t)?130:t;switch(u){case 27:case 36:c={type:"video",codec:27===t?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:case 130:case 138:{let e;e=3===u||4===u?"mp3":15===u?"aac":129===u?"ac3":135===u?"eac3":"dts",c={type:"audio",codec:e,decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:n?c={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:s?c={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:o&&(c={type:"audio",codec:"dts",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1});break;default:Ka.has(t)||(Ke._warn(`Note: MPEG-TS streams with stream_type 0x${t.toString(16)} are not currently supported.`),Ka.add(t))}c&&this.elementaryStreams.push({demuxer:this,pid:i,streamType:t,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:c,referencePesPackets:[]})}s=!0}else{const e=new Qe(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(14);const s=e.readBits(10);for(e.skipBits(40);8*(s+n)-e.pos>o;){const t=e.readBits(16);e.skipBits(3);const i=e.readBits(13);if(0!==t){if(null!==r)throw new Error("Only files with a single program are supported.");r=i}}if(null===r)throw new Error("Program Association Table must link to a Program Map Table.");a=!0}if(s&&this.elementaryStreams.every(e=>e.initialized))break;i+=this.packetStride}if(!s){if(!a)throw new Error("No Program Association Table found in the file.");throw new Error("No Program Map Table found in the file.")}for(const n of this.elementaryStreams)n.initialized&&("video"===n.info.type?this.trackBackingEntries.push(new Ya(n)):this.trackBackingEntries.push(new Ja(n)))})())}async getTrackBackings(){return await this.readMetadata(),this.trackBackingEntries}async getMetadataTags(){return{}}async getMimeType(){await this.readMetadata();return(e=>{let t="video/MP2T";const i=[...new Set(e.filter(Boolean))];return i.length>0&&(t+=`; codecs="${i.join(", ")}"`),t})(await Promise.all(this.trackBackingEntries.map(e=>e.getDecoderConfig().then(e=>e?.codec??null))))}async readSection(e,t,i=!1){let r=e,a=e;const s=[];let n,o=0,c=null,l=!0,u=0;for(;;){const e=await this.readPacket(a);if(a+=this.packetStride,!e)break;if(c){if(e.pid!==c.pid){if(i)break;continue}if(1===e.payloadUnitStartIndicator)break}else{if(0===e.payloadUnitStartIndicator)break;c=e}const n=!!(2&e.adaptationFieldControl),d=!!(1&e.adaptationFieldControl);let h=0;if(n&&(h=1+e.body[0],e===c&&h>1&&(u=e.body[1]>>6&1)),d&&(0===h?(s.push(e.body),o+=e.body.byteLength):(s.push(e.body.subarray(h)),o+=e.body.byteLength-h)),r=a,!t&&o>=64){l=!1;break}if(-1!==J(this.sectionEndPositions,r,e=>e)){l=!1;break}}if(l){const e=Z(this.sectionEndPositions,r,e=>e);this.sectionEndPositions.splice(e+1,0,r)}if(!c)return null;if(1===s.length)n=s[0];else{const e=s.reduce((e,t)=>e+t.length,0);n=new Uint8Array(e);let t=0;for(const i of s)n.set(i,t),t+=i.length}return{startPos:e,endPos:t?r:null,pid:c.pid,payload:n,randomAccessIndicator:u}}async readPacketHeader(e){let t=this.reader.requestSlice(e,4);if(Re(t)&&(t=await t),!t)return null;if(71!==Wo(t))throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const i=Vo(t);return{payloadUnitStartIndicator:i>>14&1,pid:8191&i,adaptationFieldControl:Wo(t)>>4&3}}async readPacket(e){let t=this.reader.requestSlice(e,Ha);if(Re(t)&&(t=await t),!t)return null;const i=qo(t,Ha);if(71!==i[0])throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const r=(i[1]<<8)+i[2];return{payloadUnitStartIndicator:r>>14&1,pid:8191&r,adaptationFieldControl:i[3]>>4&3,body:i.subarray(4)}}normalizeTimestamp(e){if(!this.timestampWrapInfo){const t=54e5;this.timestampWrapInfo={reference:e-t,offset:e>=Wa-t?-8589934592:Wa}}const{reference:t,offset:i}=this.timestampWrapInfo;return i<0&&e>=t||i>0&&e{if(t.payload.byteLength<3)return null;const r=new Qe(t.payload);if(1!==r.readBits(24))return null;const a=r.readBits(8);if(r.skipBits(16),188===a||190===a||191===a||240===a||241===a||255===a||242===a||248===a)return null;r.skipBits(8);const s=r.readBits(2);r.skipBits(14);let n=null;if(2===s||3===s)n=0,r.skipBits(4),n+=r.readBits(3)*(1<<30),r.skipBits(1),n+=32768*r.readBits(15),r.skipBits(1),n+=r.readBits(15),n=e.normalizeTimestamp(n);else if(i)throw new Error(Va);return{sectionStartPos:t.startPos,sectionEndPos:t.endPos,pts:n,randomAccessIndicator:t.randomAccessIndicator}},Ga=(e,t,i)=>{E(null!==t.endPos);const r=$a(e,t,i);if(!r)return null;const a=new Qe(t.payload);a.skipBits(32);const s=a.readBits(16);a.skipBits(16);const n=a.readBits(8),o=a.pos+8*n;a.pos=o;const c=o/8;E(Number.isInteger(c));const l=t.payload.subarray(c,s>0?6+s:t.payload.byteLength);return{...r,data:l}};class Qa{constructor(e){this.elementaryStream=e,this.packetBuffers=new WeakMap,this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){const e=this.elementaryStream.demuxer,t=this.elementaryStream.info.type;let i=0;for(const r of e.trackBackingEntries)if(r.getType()===t&&i++,E(r instanceof Qa),r.elementaryStream===this.elementaryStream)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return ue}getDisposition(){return{...Ge,primary:!1}}getTimeResolution(){return qa}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}createEncodedPacket(e,t,i){let r;return r=this.allPacketsAreKeyPackets()||1===e.randomAccessIndicator?"key":"delta",new Wi(i.metadataOnly?qi:e.data,r,e.pts/qa,Math.max(t/qa,0),e.sequenceNumber,e.data.byteLength)}async getFirstPacket(e){const t=this.elementaryStream.firstSection;E(t);const i=Ga(this.elementaryStream.demuxer,t,!0);E(i);const r=new es(this.elementaryStream,i),a=new ts(this,r),s=await a.readNext();if(!s)return null;const n=this.createEncodedPacket(s.packet,s.duration,e);return this.packetBuffers.set(n,a),this.packetSectionStarts.set(n,s.packet.sectionStartPos),n}async getNextPacket(e,t){let i=this.packetBuffers.get(e);if(i){const r=await i.readNext();if(!r)return null;this.packetBuffers.delete(e);const a=this.createEncodedPacket(r.packet,r.duration,t);return this.packetBuffers.set(a,i),this.packetSectionStarts.set(a,r.packet.sectionStartPos),a}const r=this.packetSectionStarts.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");const a=this.elementaryStream.demuxer,s=await a.readSection(r,!0);E(s);const n=Ga(a,s,!0);E(n);const o=new es(this.elementaryStream,n);i=new ts(this,o);const c=e.sequenceNumber;for(;;){const e=await i.readNext();if(!e)return null;if(e.packet.sequenceNumber>c){const r=this.createEncodedPacket(e.packet,e.duration,t);return this.packetBuffers.set(r,i),this.packetSectionStarts.set(r,e.packet.sectionStartPos),r}}}async getNextKeyPacket(e,t){let i=e;for(;;){if(i=await this.getNextPacket(i,t),!i)return null;if("key"===i.type)return i}}getPacket(e,t){return this.doPacketLookup(e,!1,t)}getKeyPacket(e,t){return this.doPacketLookup(e,!0,t)}async doPacketLookup(e,t,i){const r=de(e*qa),a=this.elementaryStream.demuxer,{reader:s,seekChunkSize:n}=a,o=this.elementaryStream.pid,c=async(e,t,i)=>{let r=e;for(;re.pts),m=-1!==f?h[f]:null;if(m&&r-m.pts<45e3)d=m.sectionStartPos;else{let e=0;if(null!==s.fileSize){const t=Math.ceil(s.fileSize/n);if(t>1){let i=0,s=t-1;for(e=i;i<=s;){const t=Math.floor((i+s)/2),o=me(t*n,a.packetStride)+u.sectionStartPos,l=o+n,d=await c(o,l,!1);d?d.pesPacketHeader.pts<=r?(e=t,i=t+1):s=t-1:s=t-1}}}d=me(e*n,a.packetStride)+u.sectionStartPos}const p=await c(d,s.fileSize??1/0,!1);let g=p?.pesPacketHeader??null;g||(g=u);const k=this.getReorderSize(),y=async(e,t)=>{const s=await a.readSection(e,!0);E(s);const n=Ga(a,s,!0);E(n);const o=new es(this.elementaryStream,n),c=new ts(this,o);for(;;){if((R(c.presentationOrderPackets)?.pts??-1/0)>=r)break;if(!(await c.readNextPacket()))break}const l=ae(c.presentationOrderPackets,t);if(-1===l)return null;const u=c.presentationOrderPackets[l],d=0===l?0:u.pts-c.presentationOrderPackets[l-1].pts;for(;c.decodeOrderPackets[0]!==u;)c.decodeOrderPackets.shift();c.lastDuration=d;const h=await c.readNext();E(h);const f=this.createEncodedPacket(h.packet,h.duration,i);return this.packetBuffers.set(f,c),this.packetSectionStarts.set(f,h.packet.sectionStartPos),f};if(!t||this.allPacketsAreKeyPackets()){e:for(;;){let e=g.sectionStartPos+a.packetStride;for(;;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,!1);if(t){const e=$a(a,t,!1);if(e&&null!==e.pts){if(e.pts>r)break e;g=e,Za(this.elementaryStream,g);break}}}e+=a.packetStride}}e:for(let e=0;e=a.packetOffset;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,!1);if(t){const e=$a(a,t,!1);if(e&&null!==e.pts){g=e;break}}}e-=a.packetStride}}return y(g.sectionStartPos,e=>e.pts<=r)}{let e=d,t=null;const i=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let d=null;const h=e<=u.sectionStartPos;let f,m=null;if(h)f=u,m=l;else{const t=await c(e,s.fileSize??1/0,i);f=t?.pesPacketHeader??null,m=t?.section??null}let p=!1,g=0;e:for(;f&&!(null!==t&&f.sectionStartPos>=t);){if(f.pts<=r){let e;if(this.elementaryStream.canBeTrustedWithKeyPackets)e=1===f.randomAccessIndicator;else{E(m);const t=Ga(a,m,!0);E(t);const i=new es(this.elementaryStream,t);await i.markNextPacket(),e=1===i.suppliedPacket?.randomAccessIndicator}e&&(d=f)}if(f.pts>r&&(p=!0),p&&(g++,g>k))break;let e=f.sectionStartPos+a.packetStride;for(;;){const t=await a.readPacketHeader(e);if(!t)break e;if(t.pid===o&&1===t.payloadUnitStartIndicator){const t=await a.readSection(e,i);if(t){const e=$a(a,t,!1);if(e&&null!==e.pts){f=e,m=t,Za(this.elementaryStream,f);break}}}e+=a.packetStride}}if(d){let e=d;if(0===g)e:for(let r=0;r=a.packetOffset;){const r=await a.readPacketHeader(t);if(!r)break e;if(r.pid===o&&1===r.payloadUnitStartIndicator){const r=await a.readSection(t,i);if(r){const t=$a(a,r,!1);if(t&&null!==t.pts){e=t;break}}}t-=a.packetStride}}const t=await y(e.sectionStartPos,e=>e.pts<=r&&1===e.randomAccessIndicator);return E(t),t}if(h)return null;t=e,e=Math.max(me(e-u.sectionStartPos-n,a.packetStride)+u.sectionStartPos,u.sectionStartPos)}}}}class Ya extends Qa{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}async getColorSpace(){return this.elementaryStream.info.colorSpace}async canBeTransparent(){return!1}async getDecoderConfig(){return E(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}}class Ja extends Qa{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}async getDecoderConfig(){return E(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}}const Za=(e,t)=>{const i=e.referencePesPackets,r=Z(i,t.sectionStartPos,e=>e.sectionStartPos);if(r>=0){const a=i[r];if(t.pts<=a.pts)return!1;const s=e.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-a.sectionStartPos=e?e:this.bufferData(e-t).then(()=>Math.min(this.endPos-this.currentPos,e))}getCurrentPesPacket(){const e=this.pesPackets[this.currentPesPacketIndex];return E(e),e}async bufferData(e){const t=this.endPos+e;for(;this.endPos=l)break;u=e;const i=o+u;if(u+3>=l){this.seekTo(i);break}const d=c[u+1],h=c[u+2],f=c[u+3];let m=0;if(0===d&&0===h&&1===f?m=4:0===d&&1===h&&(m=3),0===m){u++;continue}const p=i;a??(a=p);const g=u+m,k=g+r,y=6;if(k+("avc"===t?y:1)>l){this.seekTo(i);break}const b=c[g];let w,T,S;if("avc"===t)w=dt(b),T=w===at.NON_IDR_SLICE||w===at.SLICE_DPA||w===at.IDR,S=w===at.SEI||w===at.SPS||w===at.PPS||w===at.AUD;else{w=Pt(b);if(((1&b)<<5|c[g+1]>>3)>0){u+=m;continue}T=w<=nt.RASL_R||w>=nt.BLA_W_LP&&w<=21,S=w>=nt.VPS_NUT&&w<=37||w===nt.PREFIX_SEI_NUT||w>=41&&w<=44||w>=48&&w<=55}let v=!1;if(T){let e;if("avc"===t){const t=c.subarray(k,k+y),i=F(new Qe(t));e=!s||i<=n,n=i}else e=c[k]>>7===1;e&&(s?v=!0:s=!0)}else S&&s&&(v=!0);if(v){const e=p-a;return this.seekTo(a),this.supplyPacket(e,0)}u+=m}if(ea){const e=this.endPos-a;return this.seekTo(a),this.supplyPacket(e,0)}}else{const t=e.info.codec,i=128;for(;;){let r=this.ensureBuffered(i);Re(r)&&(r=await r);const a=this.currentPos;for(;this.currentPos-a>6,n=63&a[4];if(3===s||n>37){this.seekTo(t+1);continue}const o=Qt[3*n+s];E(void 0!==o),this.seekTo(t),r=this.ensureBuffered(o),Re(r)&&(r=await r);const c=Math.round(13824e4/e.info.sampleRate);return this.supplyPacket(r,c)}if("eac3"===t){if(11!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(5);if(Re(r)&&(r=await r),r<5)return;const a=this.readBytes(5);if(11!==a[0]||119!==a[1]){this.seekTo(t+1);continue}const s=2*(((7&a[2])<<8|a[3])+1),n=3===a[4]>>6?3:a[4]>>4&3,o=Yt[n];this.seekTo(t),r=this.ensureBuffered(s),Re(r)&&(r=await r);const c=256*o,l=Math.round(c*qa/e.info.sampleRate);return this.supplyPacket(r,l)}if("dts"===t){if(127!==i&&100!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(18);if(Re(r)&&(r=await r),r<18)return;const a=this.readBytes(18),s=di(a);let n=s?null:hi(a);if(!s&&!n){this.seekTo(t+1);continue}if(n&&!n.asset){this.seekTo(t);const e=Math.min(n.frameSize,4096);let i=this.ensureBuffered(e);Re(i)&&(i=await i),n=hi(this.readBytes(i))??n}let o=s?s.frameSize:n.frameSize;if(s){let e=4*Math.ceil(s.frameSize/4);for(;;){this.seekTo(t);const i=e+10;let r=this.ensureBuffered(i);if(Re(r)&&(r=await r),r=0)}async readNext(){if(0===this.decodeOrderPackets.length){if(!(await this.readNextPacket()))return null}await this.ensureCurrentPacketHasNext();const e=this.decodeOrderPackets[0],t=this.presentationOrderPackets.indexOf(e);let i;if(E(-1!==t),t===this.presentationOrderPackets.length-1)i=this.lastDuration;else{i=this.presentationOrderPackets[t+1].pts-e.pts,this.lastDuration=i}for(this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){const e=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(e))break;this.presentationOrderPackets.shift()}return{packet:e,duration:i}}async readNextPacket(){if(this.reachedEnd)return!1;let e;return this.context.suppliedPacket||await this.context.markNextPacket(),e=this.context.suppliedPacket,this.context.suppliedPacket=null,e?(this.decodeOrderPackets.push(e),this.processPacketThroughReorderBuffer(e),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)}async ensureCurrentPacketHasNext(){const e=this.decodeOrderPackets[0];for(E(e);;){const t=this.presentationOrderPackets.indexOf(e);if(-1!==t&&t<=this.presentationOrderPackets.length-2)break;if(!(await this.readNextPacket()))break}}processPacketThroughReorderBuffer(e){if(this.reorderBuffer.push(e),this.reorderBuffer.length>this.reorderSize){let e=0;for(let i=1;ie.pts-t.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}}const is="application/vnd.apple.mpegurl",rs="#EXT-X-STREAM-INF:",as="#EXT-X-I-FRAME-STREAM-INF:",ss="#EXT-X-MEDIA:",ns="#EXTINF:",os="#EXT-X-MAP:",cs="#EXT-X-KEY:",ls="#EXT-X-MEDIA-SEQUENCE:",us="#EXT-X-BYTERANGE:",ds="#EXT-X-PROGRAM-DATE-TIME:",hs="#EXT-X-TARGETDURATION:",fs="#EXT-X-PLAYLIST-TYPE:",ms=e=>0===e.length||e.startsWith("#")&&!e.startsWith("#EXT");class ps{constructor(e){this._attributes={};let t="",i="",r=!1,a=!1;for(let s=0;s{const e=[];if(this.trackDeclarations){for(const t of this.trackDeclarations)if("video"===t.type){const i=ze(e,e=>"video"===e.getType())+1;e.push(new ys(this,t,i))}else if("audio"===t.type){const i=ze(e,e=>"audio"===e.getType())+1;e.push(new bs(this,t,i))}}else{if(this.firstSegment=await this.getFirstSegment({}),!this.firstSegment)return[];const t=this.getInputForSegment(this.firstSegment),i=await t.getTracks();for(const r of i)if("video"===r.type){const t=ze(e,e=>"video"===e.getType())+1;e.push(new ys(this,{id:e.length+1,type:"video"},t))}else if("audio"===r.type){const t=ze(e,e=>"audio"===e.getType())+1;e.push(new bs(this,{id:e.length+1,type:"audio"},t))}}return e})())}async getFirstTimestampForInput(e){const t=this.firstTimestampCache.get(e);if(void 0!==t)return t;const i=await e.getFirstTimestamp();return this.firstTimestampCache.set(e,i),i}async getMediaOffset(e,t){const i=e.firstSegment??e;let r;if(this.firstSegmentFirstTimestamps.has(i))r=this.firstSegmentFirstTimestamps.get(i);else{const e=this.getInputForSegment(i);r=await this.getFirstTimestampForInput(e),this.firstSegmentFirstTimestamps.set(i,r)}if(i===e)return i.timestamp-r;const a=await this.getFirstTimestampForInput(t),s=e.timestamp-i.timestamp,n=a-r-s;return Math.abs(n)<=Math.min(.25,s)?i.timestamp-r:e.timestamp-a}dispose(){for(const e of this.inputCache)e.input.dispose();this.inputCache.length=0}}class ks{constructor(e,t,i){this.packetInfos=new WeakMap,this.hydrationPromise=null,this.firstInputTrack=null,this.firstSegment=null,this.segmentedInput=e,this.decl=t,this.number=i}hydrate(){return this.hydrationPromise??(this.hydrationPromise=(async()=>{var e;if((e=this.segmentedInput).firstSegment??(e.firstSegment=await this.segmentedInput.getFirstSegment({})),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let t=this.segmentedInput.firstSegment,i=null;for(;t;){const e=this.segmentedInput.getInputForSegment(t);if(i=(await e.getTracks()).find(e=>e.type===this.decl.type&&e.number===this.number)??null,i)break;t=await this.segmentedInput.getNextSegment(t,{})}if(!i)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=i,this.firstSegment=t})())}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(e){return this.firstInputTrack?e():this.hydrate().then(e)}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}getHasOnlyKeyPackets(){return this.delegate(()=>this.firstInputTrack._backing.getHasOnlyKeyPackets?.()??null)}getPairingMask(){return 1n}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}async isRelativeToUnixEpoch(){return await this.hydrate(),E(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.unixEpochTimestamp===this.segmentedInput.firstSegment.timestamp}getUnixTimeForTimestamp(e){return this.segmentedInput.getUnixTimeForTimestamp(e)}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(e){return this.segmentedInput.getDurationFromMetadata(e)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}async createAdjustedPacket(e,t,i){E(e.sequenceNumber>=0),E(this.segmentedInput.firstSegment);const r=await this.segmentedInput.getMediaOffset(t,i.input),a=t.timestamp-this.segmentedInput.firstSegment.timestamp,s=e.clone({timestamp:fe(e.timestamp+r,await i.getTimeResolution()),sequenceNumber:Math.floor(1e8*a)+e.sequenceNumber});return this.packetInfos.set(s,{segment:t,track:i,sourcePacket:e}),s}async getFirstPacket(e){await this.hydrate(),E(this.firstInputTrack),E(this.firstSegment);let t=this.firstInputTrack,i=this.firstSegment;for(;;){if(t){const r=await t._backing.getFirstPacket(e);if(r)return this.createAdjustedPacket(r,i,t)}if(i=await this.segmentedInput.getNextSegment(i,{skipLiveWait:e.skipLiveWait}),!i)break;const r=this.segmentedInput.getInputForSegment(i);t=(await r.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number)??null}return null}getNextPacket(e,t){return this._getNextInternal(e,t,!1)}getNextKeyPacket(e,t){return this._getNextInternal(e,t,!0)}async _getNextInternal(e,t,i){const r=this.packetInfos.get(e);if(!r)throw new Error("Packet was not created from this track.");const a=i?await r.track._backing.getNextKeyPacket(r.sourcePacket,t):await r.track._backing.getNextPacket(r.sourcePacket,t);if(a)return this.createAdjustedPacket(a,r.segment,r.track);let s=r.segment;for(;;){const e=await this.segmentedInput.getNextSegment(s,{skipLiveWait:t.skipLiveWait});if(!e)return null;const i=this.segmentedInput.getInputForSegment(e),a=(await i.getTracks()).find(e=>e.type===r.track.type&&e.number===r.track.number);if(!a){s=e;continue}const n=await a._backing.getFirstPacket(t);return n?this.createAdjustedPacket(n,e,a):null}}getPacket(e,t){return this._getPacketInternal(e,t,!1)}getKeyPacket(e,t){return this._getPacketInternal(e,t,!0)}async _getPacketInternal(e,t,i){let r=await this.segmentedInput.getSegmentAt(e,{skipLiveWait:t.skipLiveWait});if(!r)return null;for(await this.hydrate();r;){const a=this.segmentedInput.getInputForSegment(r),s=(await a.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number);if(!s){r=await this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait});continue}const n=e-await this.segmentedInput.getMediaOffset(r,a),o=i?await s._backing.getKeyPacket(n,t):await s._backing.getPacket(n,t);if(o)return this.createAdjustedPacket(o,r,s);r=await this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait})}return null}}class ys extends ks{getType(){return"video"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getCodedWidth(){return this.delegate(()=>this.firstInputTrack._backing.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.firstInputTrack._backing.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelHeight())}getRotation(){return this.delegate(()=>this.firstInputTrack._backing.getRotation())}async getColorSpace(){return this.delegate(()=>this.firstInputTrack._backing.getColorSpace())}async canBeTransparent(){return this.delegate(()=>this.firstInputTrack._backing.canBeTransparent())}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}}class bs extends ks{getType(){return"audio"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getNumberOfChannels(){return this.delegate(()=>this.firstInputTrack._backing.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.firstInputTrack._backing.getSampleRate())}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}}Me();const ws=1/0;"undefined"!==typeof FinalizationRegistry&&new FinalizationRegistry(e=>{e()});class Ts extends He{constructor(){super(),this._disposed=!1,this._refCount=0,this._usedForHls=!1,this._refFinalizationRegistry=null,this._sizePromise=null,this.onread=null,"undefined"!==typeof FinalizationRegistry&&(this._refFinalizationRegistry=new FinalizationRegistry(e=>{e._decrementRefCount()}))}async getSizeOrNull(){if(this._disposed)throw new Oo;return this._sizePromise??(this._sizePromise=(async()=>{let e=this._getFileSize();return void 0!==e||(await this._read(0,1,0,ws),e=this._getFileSize(),E(void 0!==e)),e})())}async getSize(){if(this._disposed)throw new Oo;const e=await this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e}slice(e,t){if(!Number.isInteger(e)||e<0)throw new TypeError("offset must be a non-negative integer.");if(void 0!==t&&(!Number.isInteger(t)||t<0))throw new TypeError("length, when provided, must be a non-negative integer.");return new Ns(this,e,t)}_dispatchRead(e,t){this.onread?.(e,t),this._emit("read",{start:e,end:t})}ref(){return new Ss(this)}_incrementRefCount(){this._refCount++}_decrementRefCount(){this._refCount--,0===this._refCount&&(this._dispose(),this._disposed=!0)}}class Ss{constructor(e){if(this._freed=!1,e._disposed)throw new Error("Cannot ref a disposed source.");e._incrementRefCount(),e._refFinalizationRegistry?.register(this,e,this),this._source=e}get source(){if(!this._source)throw new Error("Can't get source; ref has already been freed.");return this._source}get freed(){return this._freed}free(){if(this._freed)throw new Error("Illegal operation: double free on SourceRef.");const e=this.source;E(e._refCount>0),e._decrementRefCount(),e._refFinalizationRegistry?.unregister(this),this._freed=!0,this._source=null}[Symbol.dispose](){this.freed||this.free()}}class vs extends Ts{constructor(e,t){if("string"!==typeof e)throw new TypeError("rootPath must be a string.");if("function"!==typeof t)throw new TypeError("requestHandler must be a function.");super(),this.rootPath=e,this.requestHandler=t}_resolveRequest(e){const t=this.requestHandler(e),i=e=>{var t;if(!(e instanceof Ts||e instanceof Ss))throw new TypeError("requestHandler must return or resolve to a Source or SourceRef.");const i=e instanceof Ts?e.ref():e;return(t=i.source)._usedForHls||(t._usedForHls=this._usedForHls),i};return Re(t)?t.then(i):i(t)}}const Ps=(e,t)=>e.path===t.path;class Is extends vs{constructor(){super(...arguments),this._root=null,this._rootRequest=null}_read(e,t,i,r){if(!this._root){if(!this._rootRequest){const e=this._resolveRequest({path:this.rootPath,isRoot:!0}),t=e=>{const t=e instanceof Ts?e.ref():e;return this._root=t,this._rootRequest=null,t};Re(e)?this._rootRequest=e.then(t):(t(e),E(this._root))}if(this._rootRequest)return this._rootRequest.then(a=>a.source._read(e,t,i,r))}return this._root.source._read(e,t,i,r)}_getFileSize(){if(this._root)return this._root.source._getFileSize()}_dispose(){this._root?this._root.free():this._rootRequest&&this._rootRequest.then(e=>e.free())}}const xs="undefined"!==typeof FinalizationRegistry?new FinalizationRegistry(e=>{e.cancel().catch(()=>{})}):null;class Cs extends Ts{constructor(e,t={}){if(!(e instanceof Blob))throw new TypeError("blob must be a Blob.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.maxCacheSize&&(!Ne(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.useStreamReader&&"boolean"!==typeof t.useStreamReader)throw new TypeError("options.useStreamReader, when provided, must be a boolean.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(),this._readers=new WeakMap,this._blob=e,this._options=t,this._orchestrator=new Ms({maxCacheSize:t.maxCacheSize??8388608,maxWorkerCount:4,runWorker:this._runWorker.bind(this),onIdleWorkerRemoved:e=>{const t=this._readers.get(e);t&&(this._readers.delete(e),xs?.unregister(e),t.cancel().catch(()=>{}))},prefetchProfile:Ds.fileSystem,handleUnhandledError:t.handleUnhandledError}),this._orchestrator.fileSize=e.size}_getFileSize(){return this._orchestrator.fileSize}_read(e,t,i,r){return this._orchestrator.read(e,t,i,r)}async _runWorker(e){E(e.strictTarget);let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!Pe()&&!1!==this._options.useStreamReader){t=this._blob.slice(e.currentPos).stream().getReader(),xs?.register(e,t,e)}else t=null;this._readers.set(e,t)}for(;e.currentPos{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))&&"undefined"!==typeof window){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(i instanceof Request?i.url:i,window.location.href).origin)}catch{}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return Ke._warn("Request will not be retried because a CORS error was suspected due to different origins. You can modify this behavior by providing your own function for the 'getRetryDelay' option."),null}return Math.min(2**(e-2),16)},Es=new Set;class _s extends vs{constructor(e,t={}){if("string"!==typeof e&&!(e instanceof URL)&&!("undefined"!==typeof Request&&e instanceof Request))throw new TypeError("url must be a string, URL or Request.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.requestInit&&(!t.requestInit||"object"!==typeof t.requestInit))throw new TypeError("options.requestInit, when provided, must be an object.");if(void 0!==t.getRetryDelay&&"function"!==typeof t.getRetryDelay)throw new TypeError("options.getRetryDelay, when provided, must be a function.");if(void 0!==t.maxCacheSize&&(!Ne(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.parallelism&&(!Number.isInteger(t.parallelism)||t.parallelism<1))throw new TypeError("options.parallelism, when provided, must be a positive number.");if(void 0!==t.fetchFn&&"function"!==typeof t.fetchFn)throw new TypeError("options.fetchFn, when provided, must be a function.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(e instanceof Request?e.url:e instanceof URL?e.href:e,e=>new _s(e.path,this._options)),this._offset=0,this._length=null,this._fileSizeDetermined=!1,this._sequentialBacking=null,this._url=e,this._options=t,this._getRetryDelay=t.getRetryDelay??Bs,this._requestInit={...t.requestInit};let i=null;if(t.requestInit?.headers){const e={...we(t.requestInit.headers)},r=Object.keys(e).find(e=>"range"===e.toLowerCase());void 0!==r&&(i=e[r],delete e[r],this._requestInit.headers=e)}if(e instanceof Request){const t=e.headers.get("Range");if(null!==t){i??(i=t);const r=new Request(e);r.headers.delete("Range"),this._url=r}}if(null!==i){const e=Fs(i);e&&(this._offset=e.offset,this._length=e.length)}this._orchestrator=new Ms({maxCacheSize:t.maxCacheSize??67108864,maxWorkerCount:t.parallelism??2,runWorker:this._runWorker.bind(this),prefetchProfile:Ds.network,handleUnhandledError:t.handleUnhandledError})}_getFileSize(){if(!this._fileSizeDetermined)return null!==this._length?this._length:void 0;const e=this._sequentialBacking?this._sequentialBacking._endIndex:this._orchestrator.fileSize;return null===e?null!==this._length?this._length:null:le(e-this._offset,0,this._length??1/0)}_read(e,t,i,r){if(null!==this._length&&t>this._length)return null;const a=this._offset,s=this._sequentialBacking?this._sequentialBacking._read(a+e,a+t):this._orchestrator.read(a+e,a+t,Math.max(a+i,a),a+Math.min(r,this._length??1/0)),n=e=>e?(e.offset-=this._offset,e):null;return Re(s)?s.then(n):n(s)}async _runWorker(e){for(;;){const i=new AbortController,r=await Te(this._options.fetchFn??fetch,this._url,be(this._requestInit,{headers:{Range:`bytes=${e.currentPos}-`},signal:i.signal}),this._getRetryDelay,()=>this._disposed);if(!r.ok)throw new Error(`Error fetching ${String(this._url)}: ${r.status} ${r.statusText}`);r.redirected&&(this.rootPath=r.url);e:if(null===this._orchestrator.fileSize&&(206===r.status||"basic"===r.type&&!r.headers.has("Content-Encoding"))){const t=r.headers.get("Content-Range");if(t){const e=/\/(\d+)/.exec(t);if(e){this._orchestrator.supplyFileSize(Number(e[1]));break e}}const i=r.headers.get("Content-Length");if(i){const t=206===r.status?e.currentPos:0;this._orchestrator.supplyFileSize(t+Number(i))}}if(this._fileSizeDetermined=!0,!r.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");if(206!==r.status){if(this._sequentialBacking)return void r.body.cancel();if(!this._usedForHls){const e=new URL(this._url instanceof Request?this._url.url:this._url,"undefined"!==typeof window?window.location.href:void 0);"null"===e.origin||e.pathname.endsWith(".m3u8")||e.pathname.endsWith(".m3u")||Es.has(e.origin)||(Ke._warn(`HTTP server (origin ${e.origin}) did not respond to a range request with 206 Partial Content, meaning the resource will now be streamed sequentially, with old data being evicted from the cache. Reads into evicted regions will throw. To enable efficient media file streaming across a network, please make sure your server supports range requests. Alternatively, set maxCacheSize to Infinity in the UrlSource options to keep the entire resource in memory.`),Es.add(e.origin))}return void this._transitionToSequentialMode(r.body)}const a=r.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted)return i.abort(),void this._orchestrator.signalWorkerStoppedRunning(e);let r;try{r=await a.read()}catch(t){if(this._disposed)throw t;const e=this._getRetryDelay(1,t,this._url);if(null!==e){Ke._error("Error while reading response stream. Attempting to resume.",t),await We(1e3*e);break}throw t}if(e.aborted)continue;const{done:s,value:n}=r;if(s){if(e.currentPos>=e.targetPos)return void this._orchestrator.onWorkerFinished(e);if(e.strictTarget)break;return void this._orchestrator.onWorkerFinished(e)}this._dispatchRead(e.currentPos,e.currentPos+n.length),this._orchestrator.supplyWorkerData(e,n)}}}_transitionToSequentialMode(e){let t=e.getReader(),i=0,r=0;const a=new ReadableStream({pull:async e=>{for(;;){let s;try{s=await t.read()}catch(a){if(this._disposed)throw a;const e=this._getRetryDelay(1,a,this._url);if(null===e)throw a;Ke._error("Error while reading response stream. Attempting to resume.",a),await We(1e3*e);const s=await Te(this._options.fetchFn??fetch,this._url,be(this._requestInit,{headers:{Range:`bytes=${i}-`}}),this._getRetryDelay,()=>this._disposed);if(!s.ok)throw new Error(`Error fetching ${String(this._url)}: ${s.status} ${s.statusText}`);if(!s.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");t=s.body.getReader(),r=206===s.status?0:i;continue}if(s.done)return void e.close();let n=s.value;if(r>0){const e=Math.min(r,n.length);r-=e,n=n.subarray(e)}if(0!==n.length)return i+=n.length,void e.enqueue(n)}},cancel:()=>t.cancel()}),s=new As(a,{maxCacheSize:this._orchestrator.options.maxCacheSize,handleUnhandledError:this._options.handleUnhandledError});s._endIndex=this._orchestrator.fileSize,s._cacheMissErrorMessage="Attempted to read data from an already-evicted part of the cache. Because the HTTP server did not honor the range request, data can only be read sequentially, with old data being evicted from the cache. To fix this issue, either ensure your server responds to range requests with 206 Partial Content, or set maxCacheSize to Infinity in the UrlSource options. Note that the latter will store the entire file in the cache if needed, no matter how large.",s.on("read",({start:e,end:t})=>this._dispatchRead(e,t)),this._sequentialBacking=s;const n=new Set;for(const o of this._orchestrator.workers){for(const e of o.pendingSlices)n.add(e);o.aborted=!0,o.pendingSlices.length=0}for(const o of this._orchestrator.queuedReads)for(const e of o.pendingSlices)n.add(e);this._orchestrator.workers.length=0,this._orchestrator.queuedReads.length=0;for(const o of n){const e=s._read(o.start,o.start+o.bytes.length);Re(e)?e.then(e=>{e?(E(e.offset===o.start),o.resolve(e.bytes)):o.resolve(null)},e=>o.reject(e)):(E(null===e),o.resolve(null))}}_dispose(){this._orchestrator.dispose(),this._sequentialBacking&&(this._sequentialBacking._disposed=!0,this._sequentialBacking._dispose())}}const Rs=/^bytes=(\d+)-(\d*)$/,Fs=e=>{const t=Rs.exec(e.trim());if(!t)return null;const i=Number(t[1]),r=""===t[2]?null:Number(t[2]);return null!==r&&rthis._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const i=Z(this._cache,e,e=>e.start),r=-1!==i?this._cache[i]:null;if(r&&r.start<=e&&t<=r.end)return{bytes:r.bytes,view:r.view,offset:r.start};let a=e;const s=new Uint8Array(t-e);if(-1!==i)for(let l=i;l=t)break;const r=Math.max(e,i.start);r>a&&this._throwDueToCacheMiss();const n=Math.min(t,i.end);ra&&this._throwDueToCacheMiss();const{promise:n,resolve:o,reject:c}=te();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:c}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0;else{if(!this._handleUnhandledError)throw e;this._handleUnhandledError(e)}})),n}_throwDueToCacheMiss(){throw new Error(this._cacheMissErrorMessage)}async _pull(){for(this._reader??(this._reader=this._stream.getReader());this._currentIndex0;){const e=this._cache[0];if(this._maxRequestedIndex-e.end<=this._maxCacheSize)break;this._cache.shift()}this._currentIndex+=t.byteLength}this._pulling=!1}_dispose(){for(const e of this._pendingSlices)e.reject(new Oo);this._pendingSlices.length=0,this._cache.length=0,this._reader?.cancel()}}const Ds={fileSystem:(e,t)=>{const i=65536;return{start:e=Math.floor((e-i)/i)*i,end:t=Math.ceil((t+i)/i)*i}},network:(e,t,i)=>{const r=65536;e=Math.max(0,Math.floor((e-r)/r)*r);for(const a of i){const i=8388608,r=Math.max((a.startPos+a.targetPos)/2,a.targetPos-i);if(Ae(e,t,r,a.targetPos)){const e=a.targetPos-a.startPos,r=Math.ceil((e+1)/i)*i,s=2**Math.ceil(Math.log2(e+1)),n=Math.min(s,r);t=Math.max(t,a.startPos+n)}}return{start:e,end:t=Math.max(t,e+524288)}}};class Ms{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1,this.queuedReads=[]}read(e,t,i,r){E(!this.disposed);const a=this.options.prefetchProfile(e,t,this.workers),s=Math.max(a.start,i),n=Math.min(a.end,this.fileSize??1/0,r);E(s<=e&&t<=n);let o=null;const c=Z(this.cache,e,e=>e.start),l=-1!==c?this.cache[c]:null;l&&l.start<=e&&t<=l.end&&(l.age=this.nextAge++,o={bytes:l.bytes,view:l.view,offset:l.start});const u=Z(this.cache,s,e=>e.start),d=o?null:new Uint8Array(t-e);let h=0,f=s;const m=[];if(-1!==u){for(let i=u;i=n)break;if(r.end<=s)continue;const a=Math.max(s,r.start),o=Math.min(n,r.end);if(E(a<=o),f=d.length&&(o={bytes:d,view:N(d),offset:e}),0===m.length)return E(o),o;const{promise:p,resolve:g,reject:k}=te(),y=[];for(const w of m){const i=Math.max(e,w.start),r=Math.min(t,w.end);i===w.start&&r===w.end?y.push(w):ie.hole.start),i=-1!==t?this.queuedReads[t]:null;for(i&&w.start<=i.hole.end?(i.hole.end=Math.max(i.hole.end,w.end),i.strictTarget&&(i.strictTarget=e),b&&i.pendingSlices.push(b)):(t++,i={hole:{start:w.start,end:w.end},strictTarget:e,pendingSlices:b?[b]:[],age:this.nextAge++},this.queuedReads.splice(t,0,i));t+1i.hole.end)break;i.hole.end=Math.max(i.hole.end,e.hole.end),i.pendingSlices.push(...e.pendingSlices),i.strictTarget&&(i.strictTarget=e.strictTarget),i.age=Math.min(i.age,e.age),this.queuedReads.splice(t+1,1)}}}return o?p.catch(e=>{if(!this.disposed){if(!this.options.handleUnhandledError)throw e;this.options.handleUnhandledError(e)}}):(E(d),o=p.then(t=>t&&{bytes:t,view:N(t),offset:e})),o}checkHoleAgainstWorker(e,t,i){if(Ae(t.start-2**17,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end);for(let t=0;t=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i{if(e.running=!1,e.pendingSlices.length>0)e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0;else if(!e.aborted&&!this.disposed){if(!this.options.handleUnhandledError)throw t;this.options.handleUnhandledError(t)}}).finally(()=>{if(!e.running&&this.queuedReads.length>0){let e=0;for(let r=1;re.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;at.start&&(t.start=r),t.end<=t.start&&(s.holes.splice(e,1),e--)}0===s.holes.length&&(s.resolve(s.bytes),e.pendingSlices.splice(a,1),a--)}for(let a=0;ae){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t=e){for(const e of i.pendingSlices)e.resolve(null);this.queuedReads.splice(t,1),t--}else if(i.hole.end>e){i.hole.end=e,i.strictTarget=!0;for(let t=0;t=e&&(r.resolve(null),i.pendingSlices.splice(t,1),t--)}}}}signalWorkerStoppedRunning(e){e.running=!1,e.aborted||(e.pendingSlices.length=0)}onWorkerFinished(e){const t=this.workers.indexOf(e);E(-1!==t),e.running=!1,this.workers.splice(t,1),this.options.onIdleWorkerRemoved?.(e),null===this.fileSize&&this.supplyFileSize(e.currentPos);for(const i of e.pendingSlices)i.resolve(null)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=Z(this.cache,e.start,e=>e.start)+1;if(t>0){const i=this.cache[t-1];if(i.end>=e.end)return;if(i.end>e.start){const r=new Uint8Array(e.end-i.start);r.set(i.bytes,0),r.set(e.bytes,e.start-i.start),this.currentCacheSize+=e.end-i.end,i.bytes=r,i.view=N(r),i.end=e.end,t--,e=i}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let i=t+1;i=t.end){this.cache.splice(i,1),this.currentCacheSize-=t.bytes.length,i--;continue}const r=new Uint8Array(t.end-e.start);r.set(e.bytes,0),r.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=r,e.view=N(r),e.end=t.end,this.cache.splice(i,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let i=1;ithis._length)return null;const a=this._baseSource._read(this._offset+e,this._offset+t,this._offset+i,this._offset+r),s=e=>e?(e.offset-=this._offset,e):null;return Re(a)?a.then(s):s(a)}_dispose(){this._ref?.free()}ref(){return this._ref??(this._ref=this._baseSource.ref()),super.ref()}}var Os=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,a;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(a=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");a&&(r=function(){try{a.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t},zs=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,a=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===a)return a=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return a|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else a|=1}catch(n){i(n)}if(1===a)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});const Ls=/^0[xX][0-9a-fA-F]+$/,Us=/^data:.*;base64,/i;class qs extends gs{constructor(e,t,i,r){super(e.input,t,i),this.segments=[],this.nextLines=null,this.currentUpdateSegmentsPromise=null,this.streamHasEnded=!1,this.lastSegmentUpdateTime=-1/0,this.refreshInterval=5,this.rootPath=t,this.demuxer=e,this.nextLines=r}runUpdateSegments(){return this.currentUpdateSegmentsPromise??(this.currentUpdateSegmentsPromise=(async()=>{try{const e=this.getRemainingWaitTimeMs();e>0&&await We(e),this.lastSegmentUpdateTime=performance.now(),await this.updateSegments()}finally{this.currentUpdateSegmentsPromise=null}})())}getRemainingWaitTimeMs(){const e=performance.now()-this.lastSegmentUpdateTime,t=Math.max(0,1e3*this.refreshInterval-e);return t<=50?0:t}async updateSegments(){let e=this.nextLines;if(this.nextLines=null,!e){const t={stack:[],error:void 0,hasError:!1};try{const i=Os(t,await this.demuxer.input._getSourceUncached({path:this.rootPath,isRoot:!1}),!1),r=new zo(i.source),a=await r.requestEntireFile();E(a),e=ac(a,a.length,{ignore:ms}),i.source instanceof vs&&(this.rootPath=i.source.rootPath)}catch(y){t.error=y,t.hasError=!0}finally{zs(t)}}const t=!1!==this.input._formatOptions.hls?.offsetTimestampsByDateTime;let i=!1,r=0,a=null,s=null,n=null,o=0,c=null,l=null,u=null,d=null,h=null,f=null,m=!1,p=R(this.segments)??null;const g=e=>{const t=e.indexOf("@"),i=Number(-1===t?e:e.slice(0,t));if(!Number.isInteger(i)||i<0)throw new Error(`Invalid #EXT-X-BYTERANGE length '${e}'.`);let r=null;if(-1!==t&&(r=Number(e.slice(t+1)),!Number.isInteger(r)||r<0))throw new Error(`Invalid #EXT-X-BYTERANGE offset '${e}'.`);return{length:i,offset:r}},k=e=>{o=e,p&&(E(null!==p.sequenceNumber),p.sequenceNumber0&&null!==f&&(r=o*f),m=!0);const e=y.slice(8),t=e.indexOf(","),i=-1===t?e:e.slice(0,t),a=Number(i);if(!Number.isFinite(a)||a<0)throw new Error(`Invalid #EXTINF tag duration '${i}'.`);s=a}else if(y.startsWith(os)){const e=new ps(y.slice(11)),t=e.get("uri");if(!t)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");const i=e.get("byterange");let o=null;if(null!==i&&(o=g(i)),o&&null===o.offset)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!p){const e={path:Oe(this.rootPath,t),offset:o?.offset??0,length:o?.length??null};if("AES-128"===n?.method&&!n.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");l={timestamp:r,unixEpochTimestamp:a,firstSegment:null,sequenceNumber:null,location:e,duration:0,encryption:n,initSegment:null,lastProgramDateTimeSeconds:h}}s=null,null===d?u=null:d=null}else if(y.startsWith(cs)){const e=new ps(y.slice(11)),t=e.get("method");if("NONE"===t)n=null;else if("AES-128"===t){const t=e.get("uri");if(!t)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let i=null;const r=e.get("iv");if(r){if(!Ls.test(r))throw new Error(`Unsupported IV format '${r}'.`);let e=r.slice(2);e=e.padStart(32,"0"),i=new Uint8Array(Yi);for(let t=0;t=8&&112===t[4]&&115===t[5]&&115===t[6]&&104===t[7]){const e=N(t).getUint32(0);r=Hi(t.subarray(8,Math.min(e,t.length)))}}n={method:t,psshBox:r}}}}else if(y.startsWith(ls)){const e=y.slice(22),t=Number(e);if(!Number.isInteger(t)||t<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${e}'.`);k(t)}else if(y.startsWith(us)){const e=g(y.slice(17));if(null===e.offset){if(null===u)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");e.offset=u}d=e,u=e.offset+e.length}else if(y.startsWith(ds)){if(p)continue;const e=y.slice(25),i=Date.parse(e);if(!Number.isFinite(i))continue;const s=i/1e3;if(h===s)continue;if(null===h&&this.segments.length>0){const e=R(this.segments),i=s-(e.timestamp+e.duration);for(const r of this.segments)r.unixEpochTimestamp=r.timestamp+i,t&&(r.timestamp=r.unixEpochTimestamp)}h=s,a=s,t&&(r=s)}else if("#EXT-X-DISCONTINUITY"===y)c=null;else if(y.startsWith(hs)){const e=y.slice(22),t=Number(e);if(!Number.isFinite(t)||t<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${e}'.`);this.refreshInterval=t,f=t}else{if("#EXT-X-ENDLIST"===y){this.streamHasEnded=!0;break}if(y.startsWith(fs)){"vod"===y.slice(21).toLowerCase()&&(this.streamHasEnded=!0)}}}else{if("#EXTM3U"!==y)throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");i=!0}}if(!i)throw new Error("Invalid M3U8 file; no #EXTM3U header.")}async getFirstSegment(){return 0===this.segments.length&&await this.runUpdateSegments(),this.segments[0]??null}async getSegmentAt(e,t){0===this.segments.length&&await this.runUpdateSegments();let i=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){const r=Z(this.segments,e,e=>e.timestamp);if(-1===r)return null;if(r0;for(;;){if(re.segment===t);if(i)return i.age=this.nextInputCacheAge++,i.input;let r=null;(t.initSegment||t.firstSegment)&&(r=this.getInputForSegment(t.initSegment??t.firstSegment));const a={...this.input._formatOptions,isobmff:{...this.input._formatOptions.isobmff,resolveKeyId:this.input._formatOptions.isobmff?.resolveKeyId&&(e=>{if(!t.encryption||"SAMPLE-AES"!==t.encryption.method&&"SAMPLE-AES-CTR"!==t.encryption.method||!t.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(e);let i=e.psshBoxes;const{psshBox:r}=t.encryption;return null!==r.keyIds&&!r.keyIds.includes(e.keyId)||i.some(e=>Vi(e,r))||(i=[...i,r]),this.input._formatOptions.isobmff.resolveKeyId({...e,psshBoxes:i})})}},s=new Mo({source:new Is(t.location.path,async e=>{E(e.isRoot);const i={...e,isRoot:!1};let r;const a=t.location.offset>0||null!==t.location.length;if(t.encryption&&"SAMPLE-AES"!==t.encryption.method&&"SAMPLE-AES-CTR"!==t.encryption.method)if("AES-128"===t.encryption.method){const e=t.encryption;E(e.iv);let s=await this.input._getSourceCached(i);if(a){const e=s.source.slice(t.location.offset,t.location.length??void 0).ref();s.free(),s=e}const n=((e,t,i)=>{let r=!1,a=0;const s=new nr;return new ReadableStream({pull:async n=>{r||(s.init(await t()),r=!0);let o=e.requestSliceRange(a,0,65552);if(Re(o)&&(o=await o),!o||0===o.length)throw new Error("Invalid ciphertext.");const c=o.length;if(c%16!==0)throw new Error("Invalid ciphertext.");const l=65552===c?c-16:c,u=qo(o,l),d=new Uint8Array(l);for(let e=0;e16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");const t=d.subarray(0,l-e);n.enqueue(t),n.close(),i()}},cancel:()=>{i()}})})(new zo(s.source),async()=>{const t={stack:[],error:void 0,hasError:!1};try{const i=Os(t,await this.input._getSourceCached({path:e.keyUri,isRoot:!1},Do),!1),r=new zo(i.source),a=await r.requestSlice(0,Yi);if(!a)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");return{key:qo(a,Yi),iv:e.iv}}catch(i){t.error=i,t.hasError=!0}finally{zs(t)}},()=>{s.free()});r=new As(n).ref()}else E(!1);else if(r=await this.input._getSourceCached(i),a){const e=r.source.slice(t.location.offset,t.location.length??void 0).ref();r.free(),r=e}return r}),formats:this.input._formats.filter(e=>!(e instanceof cn)),initInput:r??void 0,formatOptions:a});s._onFormatDetermined=e=>{if(("SAMPLE-AES"===t.encryption?.method||"SAMPLE-AES-CTR"===t.encryption?.method)&&!e._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:t,input:s,age:this.nextInputCacheAge++});if(this.inputCache.length>4){const e=Le(this.inputCache,e=>e.age);E(-1!==e),this.inputCache.splice(e,1)}return s}async getLiveRefreshInterval(){return 0===this.getRemainingWaitTimeMs()&&await this.runUpdateSegments(),this.streamHasEnded?null:this.refreshInterval}}class Ws extends Ui{constructor(e){super(e),this.metadataPromise=null,this.trackBackings=null,this.internalTracks=null,this.segmentedInputs=[],this.hasMasterPlaylist=!0}readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{E(this.input._rootSource instanceof vs);const e=await this.input._reader.requestEntireFile();E(e);const t=ac(e,e.length,{ignore:ms}),{rootPath:i}=this.input._rootSource,r=[],a=[];for(let u=1;u"video"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],n=[...new Set(a.filter(e=>"audio"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],o=await Promise.all(r.map(async(e,t)=>{const r=[],o=e.attributes.get("codecs");let c;if(o)c=o.split(",").map(e=>e.trim());else{const t=this.getSegmentedInputForPath(e.fullPath),i=await t.getTrackBackings(),r=await Promise.all(i.map(async e=>({track:e,codec:await e.getCodec()})));c=await Promise.all(r.filter(e=>null!==e.codec).map(e=>e.track.getDecoderConfig().then(e=>e.codec)))}const l=e.attributes.get("video"),u=e.attributes.get("audio"),d=c.some(e=>mi.includes(Ei(e))),h=c.some(e=>gi.includes(Ei(e)));if(null!==l&&!d){if(!s.includes(l))throw new Error(`Invalid M3U8 file; variant stream references video group "${l}" which is not defined in any #EXT-X-MEDIA tags.`);const e=a.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===l&&"video"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Oe(i,t),a=this.getSegmentedInputForPath(r),s=(await a.getTrackBackings()).find(e=>"video"===e.getType());if(!s||null===await s.getCodec())break e;const n=await s.getDecoderConfig().then(e=>e?.codec??null);E(null!==n),c.push(n)}}if(null!==u&&!h){if(!n.includes(u))throw new Error(`Invalid M3U8 file; variant stream references audio group "${u}" which is not defined in any #EXT-X-MEDIA tags.`);const e=a.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===u&&"audio"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Oe(i,t),a=this.getSegmentedInputForPath(r),s=(await a.getTrackBackings()).find(e=>"audio"===e.getType());if(!s||null===await s.getCodec())break e;const n=await s.getDecoderConfig().then(e=>e?.codec??null);E(null!==n),c.push(n)}}c=[...new Set(c)];let f=null,m=null;const p=e.attributes.getAsNumber("bandwidth");E(null!==p);const g=e.attributes.getAsNumber("average-bandwidth"),k=e.attributes.get("name");for(const i of c){const o=Ei(i);if(null!==o)if(mi.includes(o)){if(null!==f)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");f=i;const n=e.attributes.get("video");if(null===n){const i=e.attributes.get("resolution");let a=null,s=null;if(i){const e=i.match(/^(\d+)x(\d+)$/);e&&(a=Number(e[1]),s=Number(e[2]))}r.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:ue,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:f,pairingMask:1n<0?a:null}})}else{if(!n.includes(s))throw new Error(`Invalid M3U8 file; variant stream references audio group "${s}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of a){const a=i.attributes.get("group-id"),n=i.attributes.get("type");if(a!==s||"audio"!==n.toLowerCase())continue;const o=i.attributes.get("channels")??e.attributes.get("channels"),c=null!==o?Number(o.split("/")[0]):null;r.push({id:-1,demuxer:this,backingTrack:null,default:Ks(i.attributes),autoselect:Ks(i.attributes)||Xs(i.attributes),languageCode:$s(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:i.fullPath??e.fullPath,fullCodecString:m,pairingMask:1n<0?c:null}})}}}}return r})),c=[],l=e=>{const t=c.find(t=>t.fullPath===e.fullPath&&t.info.type===e.info.type);t?(t.pairingMask|=e.pairingMask,t.default||(t.default=e.default),t.autoselect||(t.autoselect=e.autoselect),t.lineNumber=Math.min(t.lineNumber,e.lineNumber),null!==e.peakBitrate&&(t.peakBitrate=Math.max(t.peakBitrate??-1/0,e.peakBitrate)),null!==e.averageBitrate&&(t.averageBitrate=Math.max(t.averageBitrate??-1/0,e.averageBitrate)),t.languageCode===ue&&(t.languageCode=e.languageCode)):(e.id=c.length+1,c.push(e))};for(const u of o)for(const e of u)l(e);c.sort((e,t)=>e.lineNumber-t.lineNumber),this.trackBackings=[];for(const u of c)"video"===u.info.type?this.trackBackings.push(new Vs(u)):this.trackBackings.push(new js(u));this.internalTracks=c})())}async getTrackBackings(){return await this.readMetadata(),E(this.trackBackings),this.trackBackings}getSegmentedInputForPath(e){let t=this.segmentedInputs.find(t=>t.path===e);if(t)return t;let i=null;if(this.internalTracks){i=this.internalTracks.filter(t=>t.fullPath===e).map(e=>({id:e.id,type:e.info.type}))}return t=new qs(this,e,i,null),this.segmentedInputs.push(t),t}async getMetadataTags(){return{}}async getMimeType(){return is}dispose(){if(this.segmentedInputs){for(const e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}}class Hs{constructor(e){this.internalTrack=e,this.hydrationPromise=null}hydrate(){return this.hydrationPromise??(this.hydrationPromise=(async()=>{const e=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath);let t=null;const i=(await e.getTrackBackings()).filter(e=>e.getType()===this.getType());if(1===i.length)t=i[0];else if(this instanceof Vs){for(const r of i)if(await r.getCodec()===this.getCodec()){t=r;break}}else{E(this instanceof js);for(const e of i)if(await e.getCodec()===this.getCodec()){t=e;break}}if(!t)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=t})())}delegate(e){return this.internalTrack.backingTrack?e():this.hydrate().then(e)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return{...Ge,default:this.internalTrack.autoselect,primary:this.internalTrack.default}}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){E(this.internalTrack.demuxer.internalTracks);const e=this.internalTrack.info.type;let t=0;for(const i of this.internalTrack.demuxer.internalTracks)if(i.info.type===e&&t++,i===this.internalTrack)break;return t}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getUnixTimeForTimestamp(e){return this.delegate(()=>this.internalTrack.backingTrack.getUnixTimeForTimestamp(e))}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}async getDurationFromMetadata(e){return await this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(e)}async getLiveRefreshInterval(){return await this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}async getFirstPacket(e){return await this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(e)}async getPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getPacket(e,t)}async getKeyPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(e,t)}async getNextPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getNextPacket(e,t)}async getNextKeyPacket(e,t){return await this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(e,t)}}class Vs extends Hs{constructor(e){super(e)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return Ei(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}async getColorSpace(){return await this.hydrate(),this.backingVideoTrack.getColorSpace()}async canBeTransparent(){return await this.hydrate(),this.backingVideoTrack.canBeTransparent()}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingVideoTrack.getDecoderConfig()}}class js extends Hs{constructor(e){super(e)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return Ei(this.internalTrack.fullCodecString)}getNumberOfChannels(){return null!==this.internalTrack.info.numberOfChannels?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingAudioTrack.getDecoderConfig()}}const Ks=e=>{const t=e.get("default");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},Xs=e=>{const t=e.get("autoselect");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},$s=e=>{if(null===e)return ue;const t=e.split("-")[0];return t||ue};class Gs{constructor(){this._isIsobmff=!1}}class Qs extends Gs{constructor(){super(...arguments),this._isIsobmff=!0}async _getMajorBrand(e){let t=e._reader.requestSlice(0,12);if(Re(t)&&(t=await t),!t)return null;t.skip(4);const i=rc(t,4);return"ftyp"!==i&&"styp"!==i?null:rc(t,4)}_createDemuxer(e){return new or(e)}}class Ys extends Qs{async _canReadInput(e){const t=await this._getMajorBrand(e);if(null!==t)return"qt "!==t;let i=0;for(let r=0;r<10;r++){let t=e._reader.requestSlice(i,8);if(Re(t)&&(t=await t),!t)return!1;let r=$o(t),a=8;if(1===r){let t=e._reader.requestSlice(i+8,8);if(Re(t)&&(t=await t),!t)return!1;r=Jo(t),a=16}if(r8)return!1;if(Ar(i,r)!==Ir.EBML)return!1;const a=Mr(i);if("number"!==typeof a)return!1;let s=e._reader.requestSlice(i.filePos,a);if(Re(s)&&(s=await s),!s)return!1;const n=i.filePos;for(;s.filePos<=n+a-2;){const e=Nr(s);if(!e)break;const{id:i,size:r}=e,a=s.filePos;if(void 0===r)return!1;switch(i){case Ir.EBMLVersion:if(1!==Ar(s,r))return!1;break;case Ir.EBMLReadVersion:if(1!==Ar(s,r))return!1;break;case Ir.DocType:if(Or(s,r)!==t)return!1;break;case Ir.DocTypeVersion:if(Ar(s,r)>4)return!1}s.filePos=a+r}return!0}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new da(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class en extends Zs{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class tn extends Gs{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,uc);if(Re(i)&&(i=await i),!i)break;const r=mc(i);if(!r)break;t=i.filePos+r.size}const i=await pa(e._reader,t,t+4096);if(!i)return!1;const r=i.header,a=Di(r.mpegVersionId,r.channel);let s=e._reader.requestSlice(i.startPos+a,4);if(Re(s)&&(s=await s),!s)return!1;const n=$o(s);if(n===Fi||n===Ai)return!0;t=i.startPos+i.header.totalSize;const o=await pa(e._reader,t,t+4);if(!o)return!1;const c=o.header;return r.channel===c.channel&&r.sampleRate===c.sampleRate}_createDemuxer(e){return new ga(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class rn extends Gs{async _canReadInput(e){let t=e._reader.requestSlice(0,12);if(Re(t)&&(t=await t),!t)return!1;const i=rc(t,4);if("RIFF"!==i&&"RIFX"!==i&&"RF64"!==i)return!1;t.skip(4);return"WAVE"===rc(t,4)}_createDemuxer(e){return new Fa(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class an extends Gs{async _canReadInput(e){let t=e._reader.requestSlice(0,4);return Re(t)&&(t=await t),!!t&&"OggS"===rc(t,4)}_createDemuxer(e){return new xa(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class sn extends Gs{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,uc);if(Re(i)&&(i=await i),!i)break;const r=mc(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSlice(t,4);return Re(i)&&(i=await i),!!i&&"fLaC"===rc(i,4)}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new La(e)}}class nn extends Gs{async _canReadInput(e){let t=0;for(;;){let i=e._reader.requestSlice(t,uc);if(Re(i)&&(i=await i),!i)break;const r=mc(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSliceRange(t,7,9);if(Re(i)&&(i=await i),!i)return!1;const r=Ma(i);if(!r)return!1;if(t+=r.frameLength,i=e._reader.requestSliceRange(t,7,9),Re(i)&&(i=await i),!i)return!1;const a=Ma(i);return!!a&&(r.objectType===a.objectType&&r.samplingFrequencyIndex===a.samplingFrequencyIndex&&r.channelConfiguration===a.channelConfiguration)}_createDemuxer(e){return new Oa(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}class on extends Gs{async _canReadInput(e){let t=e._reader.requestSlice(0,205);if(Re(t)&&(t=await t),!t)return!1;const i=qo(t,205);return 71===i[0]&&71===i[188]||(71===i[0]&&71===i[204]||71===i[4]&&71===i[196])}_createDemuxer(e){return new Xa(e)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}}class cn extends Gs{async _canReadInput(e){let t=e._reader.requestSlice(0,7);if(Re(t)&&(t=await t),!t)return!1;if(!("#EXTM3U"===rc(t,7)))return!1;if(!(e._rootSource instanceof vs))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return e._rootSource._usedForHls=!0,!0}_createDemuxer(e){return new Ws(e)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return is}}const ln=new Ys,un=new Js,dn=new Zs,hn=new en,fn=new tn,mn=new rn,pn=new an,gn=new nn,kn=new sn,yn=new on,bn=new cn,wn=[bn,ln,un,dn,hn,mn,pn,kn,fn,gn,yn],Tn=[bn,ln,un,fn,gn,yn];var Sn=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,a=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===a)return a=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return a|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else a|=1}catch(n){i(n)}if(1===a)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});Me();let vn=-1/0,Pn=-1/0,In=null;"undefined"!==typeof FinalizationRegistry&&(In=new FinalizationRegistry(e=>{const t=performance.now();"video"===e.type?(t-vn>=1e3&&(Ke._error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),vn=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-Pn>=1e3&&(Ke._error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),Pn=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));class xn{constructor(){this._referenceCount=0,this._lastAllocationBuffer=null}}const Cn=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],Bn=new Set(Cn);class En{get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(ye*this.timestamp)}get microsecondDuration(){return Math.trunc(ye*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0===t.format||!Bn.has(t.format))throw new TypeError("init.format must be one of: "+Cn.join(", "));if(!Number.isInteger(t.codedWidth)||t.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(t.codedHeight)||t.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.layout){if(!Array.isArray(t.layout))throw new TypeError("init.layout, when provided, must be an array.");for(const e of t.layout){if(!e||"object"!==typeof e||Array.isArray(e))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(e.offset)||e.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(e.stride)||e.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==t.visibleRect&&qe(t.visibleRect,"init.visibleRect"),void 0!==t.displayWidth&&(!Number.isInteger(t.displayWidth)||t.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(void 0!==t.displayHeight&&(!Number.isInteger(t.displayHeight)||t.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(void 0!==t.displayWidth!==(void 0!==t.displayHeight))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this.format=t.format,this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0;const i=t.layout??Ln(t.format,t.codedWidth,t.codedHeight);let r=t.colorSpace??null;null===r&&(r="RGBA"===this.format||"RGBX"===this.format||"BGRA"===this.format||"BGRX"===this.format?{primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:{primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.visibleRect={left:t.visibleRect?.left??0,top:t.visibleRect?.top??0,width:t.visibleRect?.width??t.codedWidth,height:t.visibleRect?.height??t.codedHeight},void 0!==t.displayWidth?(this.squarePixelWidth=this.rotation%180===0?t.displayWidth:t.displayHeight,this.squarePixelHeight=this.rotation%180===0?t.displayHeight:t.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height),this._data=t._doNotCopy?M(e):M(e).slice(),this._layout=i,this.colorSpace=new Dn(r)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==t?.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==t?.timestamp&&!Number.isFinite(t?.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==t?.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");void 0!==t?.visibleRect&&qe(t.visibleRect,"init.visibleRect"),this._data=e,this._layout=null,this.format=e.format,this.visibleRect={left:e.visibleRect?.x??0,top:e.visibleRect?.y??0,width:e.visibleRect?.width??e.codedWidth,height:e.visibleRect?.height??e.codedHeight},this.rotation=t?.rotation??0,this.squarePixelWidth=e.displayWidth,this.squarePixelHeight=e.displayHeight,this.timestamp=t?.timestamp??e.timestamp/1e6,this.duration=t?.duration??(e.duration??0)/1e6,this.colorSpace=new Dn(e.colorSpace)}else if("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.visibleRect&&qe(t.visibleRect,"init.visibleRect"),"undefined"!==typeof VideoFrame)return new En(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*ye),duration:Math.trunc((t.duration??0)*ye)||void 0,visibleRect:t.visibleRect&&{x:t.visibleRect.left,y:t.visibleRect.top,width:t.visibleRect.width,height:t.visibleRect.height}}),t);let i=0,r=0;if("naturalWidth"in e?(i=e.naturalWidth,r=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,r=e.videoHeight):"width"in e&&(i=Number(e.width),r=Number(e.height)),!i||!r)throw new TypeError("Could not determine dimensions.");const a=t.visibleRect??{left:0,top:0,width:i,height:r},s=new OffscreenCanvas(a.width,a.height),n=s.getContext("2d",{alpha:xe(),willReadFrequently:!0});if(!n)throw new Error("OffscreenCanvas must have support for the '2d' context in order to create a VideoSample from this data.");n.drawImage(e,-a.left,-a.top),this._data=s,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:a.width,height:a.height},this.squarePixelWidth=a.width,this.squarePixelHeight=a.height,this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0,this.colorSpace=new Dn({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else{if(!(e instanceof xn))throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(this._data=e,e._referenceCount++,this.format=e.getFormat(),null!==this.format&&!Cn.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:e.getCodedWidth(),height:e.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=e.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=e.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=t.rotation??0,this.timestamp=t.timestamp,this.duration=t.duration??0,this.colorSpace=e.getColorSpace()}this.encodeOptions=t?.encodeOptions??{},this.pixelAspectRatio=Ue({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),In?.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return E(null!==this._data),this._data instanceof xn?new En(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):Mn(this._data)?new En(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):this._data instanceof Uint8Array?(E(this._layout),new En(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions,_doNotCopy:!0})):new En(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions})}close(){this._closed||(In?.unregister(this),this._data instanceof xn?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Mn(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){if(zn(e),this._closed)throw new Error("VideoSample is closed.");if(null==(e.format??this.format))throw new Error("Cannot get allocation size when format is null.");if(Mn(this._data))return this._data.allocationSize(e);return qn(this,e).allocationSize}async copyTo(e,t={}){if(!X(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(zn(t),this._closed)throw new Error("VideoSample is closed.");if(null==(t.format??this.format))throw new Error("Cannot copy video sample data when format is null.");if(E(null!==this._data),Mn(this._data))return this._data.copyTo(e,t);if(t.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(t.format)){if(!(this._data instanceof xn)){if("undefined"===typeof VideoFrame)throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");const i=this.toVideoFrame(),r=await i.copyTo(e,t);return i.close(),r}{const i={stack:[],error:void 0,hasError:!1};try{const r=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,a;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(a=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");a&&(r=function(){try{a.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t}(i,await this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},t.colorSpace??"srgb"),!1);if(!(r instanceof En))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(r.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${r.format}' instead.`);return await r.copyTo(e,t)}catch(c){i.error=c,i.hasError=!0}finally{Sn(i)}}}const i=qn(this,t);E(this.format);const r=M(e);if(r.byteLength!(e.data instanceof Uint8Array)||!Number.isInteger(e.stride)||e.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');s=e}else if(this._data instanceof Uint8Array)E(this._layout),E(this._layout.length===a.length),s=this._layout.map((e,t)=>{const i=Math.ceil(this.codedHeight/a[t].heightDivisor);return{data:this._data.subarray(e.offset,e.offset+e.stride*i),stride:e.stride}});else{const e=this._data.getContext("2d");E(e);const t=e.getImageData(0,0,this.codedWidth,this.codedHeight);s=[{data:M(t.data),stride:4*this.codedWidth}]}const n=[],o=a.length;for(let l=0;la.byteLength)throw new Error("Source buffer OOB read.");if(c+u>r.byteLength)throw new Error("Destination buffer OOB write.");const i=a.subarray(o,o+u);r.set(i,c),o+=t,c+=e.destinationStride}n.push(d)}if(void 0!==t.format){const e=this.format.startsWith("RGB")!==t.format.startsWith("RGB"),a=this.format.includes("X")&&t.format.includes("A");if(e||a)for(let t=0;te+t.data.byteLength,0),i=new Uint8Array(t);let r=0;const a=[];for(const s of e)i.set(s.data,r),a.push(r),r+=s.data.byteLength;return new VideoFrame(i,{format:this.format,layout:e.map((e,t)=>({offset:a[t],stride:e.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}return Mn(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?(E(this._layout),new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,layout:this._layout,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,i,r,a,s,n,o,c){let l=0,u=0,d=this.displayWidth,h=this.displayHeight,f=0,m=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(l=t,u=i,d=r,h=a,f=s,m=n,void 0!==o?(p=o,g=c):(p=d,g=h)):(f=t,m=i,void 0!==r&&(p=r,g=a)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(l))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(f))throw new TypeError("dx must be a number.");if(!Number.isFinite(m))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:l,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(l,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const y=f+p/2,b=m+g/2;e.translate(y,b),e.rotate(this.rotation*Math.PI/180);const w=this.rotation%180===0?1:p/g;e.scale(1/w,w),e.drawImage(k,l,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&On(t.crop,"options.");const i=e.canvas.width,r=e.canvas.height,a=t.rotation??this.rotation,[s,n]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let o,c,l,u,d=t.crop;d&&(d=Nn(d,s,n));const{sx:h,sy:f,sWidth:m,sHeight:p}=this._rotateSourceRegion(t.crop?.left??0,t.crop?.top??0,t.crop?.width??s,t.crop?.height??n,a);if("fill"===t.fit)o=0,c=0,l=i,u=r;else{const[e,a]=t.crop?[t.crop.width,t.crop.height]:[s,n],d="contain"===t.fit?Math.min(i/e,r/a):Math.max(i/e,r/a);l=e*d,u=a*d,o=(i-l)/2,c=(r-u)/2}e.save();const g=a%180===0?1:l/u;e.translate(i/2,r/2),e.rotate(a*Math.PI/180),e.scale(1/g,g),e.translate(-i/2,-r/2),e.drawImage(this.toCanvasImageSource(),h,f,m,p,o,c,l,u),e.restore()}_rotateSourceRegion(e,t,i,r,a){return 90===a?[e,t,i,r]=[t,this.squarePixelHeight-e-i,r,i]:180===a?[e,t]=[this.squarePixelWidth-e-i,this.squarePixelHeight-t-r]:270===a&&([e,t,i,r]=[this.squarePixelWidth-t-r,e,r,i]),{sx:e,sy:t,sWidth:i,sHeight:r}}_drawWithFitAndMipmapping(e,t,i){const r=e.width,a=e.height,[s,n]=i.rotation%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],o=i.crop?i.crop.width:s,c=i.crop?i.crop.height:n;let l=0;2*r0?An(u,d):{canvas:e,context:t,isNew:i.targetIsFresh};f.imageSmoothingQuality="high",i.fillBlack?(f.fillStyle="black",f.fillRect(0,0,u,d)):m||f.clearRect(0,0,u,d),this.drawWithFit(f,{fit:i.fit,rotation:i.rotation,crop:i.crop}),f.globalCompositeOperation="copy";for(let p=l;p>1;p--){const e=r*2**p,t=a*2**p;f.drawImage(h,0,0,e,t,0,0,e/2,t/2)}f.globalCompositeOperation="source-over",l>0&&(t.imageSmoothingQuality="high",t.globalCompositeOperation="copy",t.drawImage(h,0,0,2*r,2*a,0,0,r,a),t.globalCompositeOperation="source-over")}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(E(null!==this._data),this._data instanceof xn||this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}async transform(e){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.width&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(void 0!==e.height&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(void 0!==e.roundDimensionsTo&&(!Number.isInteger(e.roundDimensionsTo)||e.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(void 0!==e.fit&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==e.width&&void 0!==e.height&&void 0===e.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==e.rotate&&![0,90,180,270].includes(e.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(void 0!==e.crop&&On(e.crop,"options."),void 0!==e.alpha&&!["keep","discard"].includes(e.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");const t=_(this.rotation+(e.rotate??0)),[i,r]=t%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let a=e.crop;a&&(a=Nn(a,i,r));const s=a?a.width:i,n=a?a.height:r,o=s/n;let c,l;void 0!==e.width&&void 0===e.height?(c=e.width,l=c/o):void 0===e.width&&void 0!==e.height?(l=e.height,c=l*o):void 0!==e.width&&void 0!==e.height?(c=e.width,l=e.height):(c=s,l=n),c=he(c,e.roundDimensionsTo??1),l=he(l,e.roundDimensionsTo??1);const u={width:c,height:l,fit:e.fit??"fill",rotation:t,crop:a??{left:0,top:0,width:i,height:r},alpha:e.alpha??"keep"};for(const m of _n){let e=m(this,u);if(Re(e)&&(e=await e),null!==e)return e}const{canvas:d,context:h,isNew:f}=An(u.width,u.height);return this._drawWithFitAndMipmapping(d,h,{fit:u.fit,rotation:u.rotation,crop:u.crop,targetIsFresh:f,fillBlack:"discard"===u.alpha}),new En(d,{timestamp:this.timestamp,duration:this.duration,rotation:0})}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}setEncodeOptions(e){if(!e||"object"!==typeof e)throw new TypeError("newEncodeOptions must be an object.");this.encodeOptions=e}[Symbol.dispose](){this.close()}}const _n=[],Rn=[];let Fn=0;const An=(e,t)=>{for(const a of Rn)if(a.canvas.width===e&&a.canvas.height===t)return a.age=Fn++,{canvas:a.canvas,context:a.context,isNew:!1};let i;if("undefined"!==typeof OffscreenCanvas)i=new OffscreenCanvas(e,t);else{if("undefined"===typeof window||"undefined"===typeof document)throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");i=document.createElement("canvas"),i.width=e,i.height=t}const r=i.getContext("2d",{alpha:!0,willReadFrequently:!1});if(!r)throw new Error("The '2d' canvas context is required to transform VideoSamples. Register a custom transformer using registerVideoSampleTransformer to work around this limitation.");return Rn.length>=3&&Rn.splice(Le(Rn,e=>e.age),1),Rn.push({canvas:i,context:r,age:Fn++}),{canvas:i,context:r,isNew:!0}};class Dn{constructor(e){if(void 0!==e){if(!e||"object"!==typeof e)throw new TypeError("init.colorSpace, when provided, must be an object.");const t=Object.keys(L);if(null!=e.primaries&&!t.includes(e.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${t.join(", ")}.`);const i=Object.keys(q);if(null!=e.transfer&&!i.includes(e.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${i.join(", ")}.`);const r=Object.keys(H);if(null!=e.matrix&&!r.includes(e.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${r.join(", ")}.`);if(null!=e.fullRange&&"boolean"!==typeof e.fullRange)throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}this.primaries=e?.primaries??null,this.transfer=e?.transfer??null,this.matrix=e?.matrix??null,this.fullRange=e?.fullRange??null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const Mn=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,Nn=(e,t,i)=>{const r=Math.min(e.left,t),a=Math.min(e.top,i),s=Math.min(e.width,t-r),n=Math.min(e.height,i-a);return E(s>=0),E(n>=0),{left:r,top:a,width:s,height:n}},On=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},zn=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},Ln=(e,t,i)=>{const r=Un(e),a=[];let s=0;for(const n of r){const e=Math.ceil(t/n.widthDivisor),r=Math.ceil(i/n.heightDivisor),o=e*n.sampleBytes,c=o*r;a.push({offset:s,stride:o}),s+=c}return a},Un=e=>{const t=(e,t,i,r,a)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:i,heightDivisor:r},{sampleBytes:t,widthDivisor:i,heightDivisor:r}];return a&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:se(e),E(!1)}},qn=(e,t)=>{const i={left:0,top:0,width:e.codedWidth,height:e.codedHeight},r=t.rect,a=Wn(i,r,e.codedWidth,e.codedHeight,e.format),s=t.layout;let n;if(t.format&&t.format!==e.format){if(!["RGBA","RGBX","BGRA","BGRX"].includes(t.format))throw new Error("NotSupportedError: Invalid destination format.");n=t.format}else n=e.format;return Vn(a,n,s)},Wn=(e,t,i,r,a)=>{const s={...e};if(void 0!==t){if(0===t.width||0===t.height)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>i)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");s.x=t.x||0,s.y=t.y||0,s.width=t.width||0,s.height=t.height||0}if(!Hn(a,s))throw new TypeError("visibleRect alignment is invalid for the format.");return s},Hn=(e,t)=>{if(null===e)return!0;const i=Un(e);for(let r=0;r{const r=Un(t),a=r.length;if(void 0!==i&&i.length!==a)throw new TypeError(`Layout must have ${a} planes.`);let s=0;const n=[],o=[];for(let c=0;c4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(e?.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/($n(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let i;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)i=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");i=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const r=this.numberOfFrames*this.numberOfChannels*$n(this.format);if(i.byteLength=this.numberOfFrames)throw new RangeError("frameOffset out of range");const r=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-i;if(r>this.numberOfFrames-i)throw new RangeError("frameCount out of range");const a=$n(t),s=Gn(t);if(s&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!s&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(s?r:r*this.numberOfChannels)*a}copyTo(e,t){if(!X(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!jn.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{format:i,frameCount:r,frameOffset:a}=t;let{planeIndex:s}=t,n=this.format;const o=i??this.format;if(!o)throw new Error("Destination format not determined");const c=this.numberOfFrames,l=this.numberOfChannels,u=a??0;if(u>=c)throw new RangeError("frameOffset out of range");const d=void 0!==r?r:c-u;if(d>c-u)throw new RangeError("frameCount out of range");const h=$n(o),f=Gn(o);if(f&&s>=l)throw new RangeError("planeIndex out of range");if(!f&&0!==s)throw new RangeError("planeIndex out of range");const m=(f?d:d*l)*h;if(e.byteLength2&&o!==n)return void Zn(this._data,p,n,o,l,s,u,d);try{return void this._data.copyTo(e,{planeIndex:s,frameOffset:u,frameCount:d,format:o})}catch(S){if("f32-planar"===o)throw S;n="f32-planar"}}const k=Qn(n),y=$n(n),b=Gn(n);let w;if(this._data instanceof Kn){const e=e=>{const t=this._data.getDataPlane(e);if(!(t instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");const i=c*y*(b?1:l);if(t.byteLength!==i)throw new TypeError(`Data plane ${e} has invalid size. Expected exactly ${i} bytes, got ${t.byteLength} bytes.`);return t};if(b)if(f)w=e(s),s=0;else{w=new Uint8Array(c*y*l);for(let t=0;tthis.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t0)for(let r=0;r0&&this.copyTo(a,{planeIndex:0,format:this.format,frameOffset:e,frameCount:i});return new Xn({data:a,format:this.format,sampleRate:this.sampleRate,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp+e/this.sampleRate})}close(){this._closed||(In?.unregister(this),this._data instanceof Kn?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Jn(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof Kn?this._createAudioDataFromData():Jn(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(Gn(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let i=0;i0;){const a=Math.min(s,o),c=new Float32Array(i*a);for(let t=0;t0;){const a=Math.min(s,o),l=new Float32Array(i*a);for(let t=0;t{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},Gn=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},Qn=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},Yn=e=>{switch(e){case"u8":case"u8-planar":return(e,t,i)=>e.setUint8(t,le(127.5*(i+1),0,255));case"s16":case"s16-planar":return(e,t,i)=>e.setInt16(t,le(Math.round(32767*i),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,i)=>e.setInt32(t,le(Math.round(2147483647*i),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,i)=>e.setFloat32(t,i,!0)}},Jn=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,Zn=(e,t,i,r,a,s,n,o)=>{const c=Qn(i),l=Yn(r),u=$n(i),d=$n(r),h=Gn(i);if(Gn(r))if(h){const r=new ArrayBuffer(o*u),a=N(r);e.copyTo(r,{planeIndex:s,frameOffset:n,frameCount:o,format:i});for(let e=0;e{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(void 0!==e.skipLiveWait&&"boolean"!==typeof e.skipLiveWait)throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},ro=e=>{if(!Ne(e))throw new TypeError("timestamp must be a number.")},ao=(e,t,i)=>i.verifyKeyPackets?t.then(async t=>{if(!t||"delta"===t.type)return t;const i=await e.determinePacketType(t);return i&&(t.type=i),t}):t;class so{constructor(e){if(!(e instanceof To))throw new TypeError("track must be an InputTrack.");this._track=e}async getFirstPacket(e={}){if(io(e),this._track.input._disposed)throw new Oo;return ao(this._track,this._track._backing.getFirstPacket(e),e)}async getFirstKeyPacket(e={}){io(e);const t=await this.getFirstPacket(e);return t?"key"===t.type?t:this.getNextKeyPacket(t,e):null}async getPacket(e,t={}){if(ro(e),io(t),this._track.input._disposed)throw new Oo;return ao(this._track,this._track._backing.getPacket(e,t),t)}async getNextPacket(e,t={}){if(!(e instanceof Wi))throw new TypeError("packet must be an EncodedPacket.");if(io(t),this._track.input._disposed)throw new Oo;return ao(this._track,this._track._backing.getNextPacket(e,t),t)}async getKeyPacket(e,t={}){if(ro(e),io(t),this._track.input._disposed)throw new Oo;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const i=await this._track._backing.getKeyPacket(e,t);if(!i)return i;E("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getKeyPacket(i.timestamp-1/await this._track.getTimeResolution(),t):i}async getNextKeyPacket(e,t={}){if(!(e instanceof Wi))throw new TypeError("packet must be an EncodedPacket.");if(io(t),this._track.input._disposed)throw new Oo;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const i=await this._track._backing.getNextKeyPacket(e,t);if(!i)return i;E("key"===i.type);return"delta"===await this._track.determinePacketType(i)?this.getNextKeyPacket(i,t):i}packets(e,t,i={}){if(void 0!==e&&!(e instanceof Wi))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!i?.metadataOnly)throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof Wi))throw new TypeError("endPacket must be an EncodedPacket.");if(io(i),this._track.input._disposed)throw new Oo;const r=[];let{promise:a,resolve:s}=te(),{promise:n,resolve:o}=te(),c=!1,l=!1,u=null,d=!1;const h=[],f=()=>Math.max(2,h.length);(async()=>{let u=e??await this.getFirstPacket(i);for(;u&&!l&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=t?.sequenceNumber);)r.length>f()?(({promise:n,resolve:o}=te()),await n):(r.push(u),s(),({promise:a,resolve:s}=te()),u=await this.getNextPacket(u,i));c=!0,s()})().catch(e=>{d||(u=e,d=!0,s())});const m=this._track;return{async next(){for(;;){if(m.input._disposed)throw new Oo;if(l)return{value:void 0,done:!0};if(d)throw u;if(r.length>0){const e=r.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};await a}},return:async()=>(l=!0,o(),s(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}class no{constructor(e,t){this.onSample=e,this.onError=t}}class oo{mediaSamplesInRange(e=-1/0,t=1/0,i){ro(e),ro(t);const r=[];let a=!1,s=null,{promise:n,resolve:o}=te(),{promise:c,resolve:l}=te(),u=!1,d=!1,h=!1,f=null,m=null,p=!1;const g={...i,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{f=await this._createDecoder(i=>{l(),i.timestamp>=t&&(d=!0),d?i.close():(s&&(i.timestamp>e?(r.push(s),a=!0):s.close()),i.timestamp>=e&&(r.push(i),a=!0),s=a?null:i,r.length>0&&(o(),({promise:n,resolve:o}=te())))},e=>{p||(m=e,p=!0,o())});const i=this._createPacketSink(),k=await i.getKeyPacket(e,g)??await i.getFirstKeyPacket(g);let y=k;const b=i.packets(k??void 0,void 0,g);for(await b.next();y&&!d&&!this._track.input._disposed;){const e=co(r.length);if(r.length+f.getDecodeQueueSize()>e){({promise:c,resolve:l}=te()),await c;continue}f.decode(y);const t=await b.next();if(t.done)break;y=t.value}await b.return(),h||this._track.input._disposed||await f.flush(),!a&&s&&r.push(s),u=!0,o()})().catch(e=>{p||(m=e,p=!0,o())}).finally(()=>{f?.close()});const k=this._track,y=()=>{s?.close();for(const e of r)e.close()};return{async next(){for(;;){if(k.input._disposed)throw h=!0,d=!0,y(),new Oo;if(h)return{value:void 0,done:!0};if(p)throw h=!0,d=!0,y(),m;if(r.length>0){const e=r.shift();return l(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};await n}},return:async()=>(h=!0,d=!0,l(),o(),y(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e,t){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const i=async function*(e){Symbol.iterator in e?yield*e[Symbol.iterator]():yield*e[Symbol.asyncIterator]()}(e),r=[],a=[];let{promise:s,resolve:n}=te(),{promise:o,resolve:c}=te(),l=!1,u=!1,d=null,h=null,f=!1;const m=e=>{a.push(e),n(),({promise:s,resolve:n}=te())},p={...t,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{d=await this._createDecoder(e=>{if(c(),u)return void e.close();let t=0;for(;r.length>0&&e.timestamp-r[0]>-1e-10;)t++,r.shift();if(t>0)for(let i=0;i{f||(h=e,f=!0,n())});const e=this._createPacketSink();let t=null,s=null,g=-1;const k=async()=>{E(s),E(d);let t=s;for(d.decode(t);t.sequenceNumberi&&!u;)({promise:o,resolve:c}=te()),await o;if(u)break;const r=await e.getNextPacket(t,p);E(r),d.decode(r),t=r}g=-1},y=async()=>{E(d),await d.flush();for(let e=0;e{f||(h=e,f=!0,n())}).finally(()=>{d?.close()});const g=this._track,k=()=>{for(const e of a)e?.close()};return{async next(){for(;;){if(g.input._disposed)throw u=!0,k(),new Oo;if(u)return{value:void 0,done:!0};if(f)throw u=!0,k(),h;if(a.length>0){const e=a.shift();return E(void 0!==e),c(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};await s}},return:async()=>(u=!0,c(),n(),k(),{value:void 0,done:!0}),async throw(e){throw e},[Symbol.asyncIterator](){return this}}}}const co=e=>0===e?40:8;class lo extends no{constructor(e,t,i,r,a,s){super(e,t),this.codec=i,this.decoderConfig=r,this.rotation=a,this.timeResolution=s,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new Se,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1,this.finalSamples=[],this.mergeAlphaPromises=[];const n=eo.find(e=>e.supports(i,r));if(n)this.customDecoder=new n,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof En))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();E(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if(Be()){if("avc"===i&&this.decoderConfig.description){const e=yt(M(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=wt(e.sequenceParameterSets[0]);t&&(0===t.frameMbsOnlyFlag&&(this.decoderConfig={...this.decoderConfig,hardwareAcceleration:"prefer-software"}),0!==t.maxDecFrameBuffering&&1!==t.bitstreamRestrictionFlag&&(e.sequenceParameterSets[0]=St(t),this.decoderConfig={...this.decoderConfig,description:kt(e)}))}}j(this.decoderConfig.colorSpace)||(this.decoderConfig={...this.decoderConfig,colorSpace:{primaries:this.decoderConfig.colorSpace?.primaries??"bt709",matrix:this.decoderConfig.colorSpace?.matrix??"bt709",transfer:this.decoderConfig.colorSpace?.transfer??"bt709",fullRange:this.decoderConfig.colorSpace?.fullRange??!1}})}const t=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(E(this.decoder),Math.max(this.decoder.decodeQueueSize,this.alphaDecoder?.decodeQueueSize??0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--);else{if(E(this.decoder),Pe()||ee(this.inputTimestamps,e.timestamp,e=>e),Be()&&0===this.currentPacketIndex)if("avc"===this.codec){const t=[];let i=!1;for(const a of ut(e.data,this.decoderConfig)){const r=dt(e.data[a.offset]);if(i||(i=r>=1&&r<=5),r===at.AUD){if(i)break;t.length=0}r>=20&&r<=31||t.push(e.data.subarray(a.offset,a.offset+a.length))}if(!this.decoderConfig.description)for(let e=0;e{if(t.description){const i=3&M(t.description)[4];return pt(e,i+1)}return mt(e)})(t,this.decoderConfig);e=new Wi(r,e.type,e.timestamp,e.duration)}else if("hevc"===this.codec){const t=Nt(e.data,this.decoderConfig);t&&(e=new Wi(t,e.type,e.timestamp,e.duration))}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha)return void this.pushNullAlphaFrame();if(this.merger||(this.merger=new ho),!this.alphaDecoder){const e=e=>{if(this.colorQueue.length>0){const t=this.colorQueue.shift();E(void 0!==t),this.mergeAlpha(t,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();E(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=Vt(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(t??e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(const t of vt(e,this.decoderConfig)){const i=Pt(e[t.offset]);if(i===nt.RASL_N||i===nt.RASL_R)return!0}return!1}sampleHandler(e){if(Pe()){if(this.sampleQueue.length>0&&e.timestamp>=R(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}ee(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();E(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}async mergeAlpha(e,t){const i=te();this.mergeAlphaPromises.push(i.promise);const r={sample:null};this.finalSamples.push(r);try{if(t){E(this.merger);const i=await this.merger.merge(e,t);r.sample=new En(i)}else r.sample=new En(e);for(;this.finalSamples.length>0&&null!==this.finalSamples[0].sample;){const e=this.finalSamples.shift();this.sampleHandler(e.sample)}}catch(a){ie(this.finalSamples,r),this.onError(a)}finally{ie(this.mergeAlphaPromises,i.promise),i.resolve()}}async flush(){if(this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(E(this.decoder),await Promise.all([this.decoder.flush(),this.alphaDecoder?.flush()]),await Promise.all(this.mergeAlphaPromises),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),Pe()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(E(this.decoder),"closed"!==this.decoder.state&&this.decoder.close(),this.alphaDecoder&&"closed"!==this.alphaDecoder.state&&this.alphaDecoder.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.merger?.close());for(const e of this.sampleQueue)e.close();this.sampleQueue.length=0}}let uo=null;class ho{constructor(){this.workers=[],this.nextWorkerIndex=0,this.pendingRequests=new Map,this.nextRequestId=0}merge(e,t){if(0===this.workers.length){if(!uo){const e=new Blob([`(${fo.toString()})()`],{type:"application/javascript"});uo=URL.createObjectURL(e)}const e=le(navigator.hardwareConcurrency,1,4);for(let t=0;t{const t=e.data,i=this.pendingRequests.get(t.id);i&&(this.pendingRequests.delete(t.id),"error"in t?i.reject(new Error(t.error)):i.resolve(t.frame))}),e.addEventListener("error",e=>{const t=new Error(e.message||"Color/alpha merge worker error.");for(const i of this.pendingRequests.values())i.reject(t);this.pendingRequests.clear()}),this.workers.push(e)}}const i=this.nextRequestId++,r=te();this.pendingRequests.set(i,r);const a=this.workers[this.nextWorkerIndex];return this.nextWorkerIndex=(this.nextWorkerIndex+1)%this.workers.length,a.postMessage({id:i,color:e,alpha:t},{transfer:[e,t]}),r.promise}close(){for(const t of this.workers)t.terminate();this.workers.length=0;const e=new Error("Color/alpha merger closed.");for(const t of this.pendingRequests.values())t.reject(e);this.pendingRequests.clear()}}const fo=()=>{let e=null,t=null,i=Promise.resolve();self.addEventListener("message",e=>{const{id:t,color:a,alpha:s}=e.data;i=i.then(async()=>{try{const e=await r(a,s);self.postMessage({id:t,frame:e},{transfer:[e]})}catch(e){self.postMessage({id:t,error:e.message})}finally{a.close(),s.close()}})});const r=async(e,t)=>{const i=e.format,r=t.format;if(!i||!r)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");const o=i.includes("P10"),c=i.includes("P12"),l=r.includes("P10"),u=r.includes("P12");if(l!==o||u!==c)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${i}', alpha: '${r}').`);if("RGBX"===i||"RGBA"===i||"BGRX"===i||"BGRA"===i)return await a(e,t,i);if("I420"===i||"I420P10"===i||"I420P12"===i||"I422"===i||"I422P10"===i||"I422P12"===i||"I444"===i||"I444P10"===i||"I444P12"===i)return await s(e,t,i);if("NV12"===i)return await n(e,t);throw new Error(`CPU color/alpha merging does not support format '${i}'.`)},a=async(e,t,i)=>{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=r*a,n=new Uint8Array(4*s);await e.copyTo(n);const c=await o(t,r,a,1);for(let o=0,u=3;o{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=i.includes("P10"),n=i.includes("P12"),c=s||n?2:1;let l,u;i.startsWith("I420")?(l=Math.ceil(r/2),u=Math.ceil(a/2)):i.startsWith("I422")?(l=Math.ceil(r/2),u=a):(l=r,u=a);const d=r*a,h=d*c,f=l*u*c,m=new Uint8Array(h+2*f+d*c);await e.copyTo(m);const p=await o(t,r,a,c),g=h+2*f;m.set(p,g);const k={format:i.slice(0,4)+"A"+i.slice(4),codedWidth:r,codedHeight:a,timestamp:e.timestamp,duration:e.duration??void 0,transfer:[m.buffer]};return new VideoFrame(m,k)},n=async(e,i)=>{const r=e.visibleRect?.width??e.codedWidth,a=e.visibleRect?.height??e.codedHeight,s=r*a,n=Math.ceil(r/2)*Math.ceil(a/2),c=e.allocationSize();t&&t.byteLength===c||(t=new Uint8Array(c)),await e.copyTo(t);const l=new Uint8Array(s+2*n+s);l.set(t.subarray(0,s),0);const u=s,d=s+n,h=s;for(let o=0;o{const s=t.allocationSize();e&&e.byteLength===s||(e=new Uint8Array(s)),await t.copyTo(e);const n=t.format;if("RGBA"===n||"BGRA"===n||"RGBX"===n||"BGRX"===n){const t="RGBA"===n||"RGBX"===n?0:2,a=i*r;for(let i=0;i{if(!e||"object"!==typeof e)throw new TypeError("decoderOptions must be an object.");if(void 0!==e.hardwareAcceleration&&!["no-preference","prefer-hardware","prefer-software"].includes(e.hardwareAcceleration))throw new TypeError("decoderOptions.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(void 0!==e.optimizeForLatency&&"boolean"!==typeof e.optimizeForLatency)throw new TypeError("decoderOptions.optimizeForLatency, when provided, must be a boolean.")};class po extends oo{constructor(e,t={}){if(!(e instanceof Po))throw new TypeError("videoTrack must be an InputVideoTrack.");mo(t),super(),this._track=e,this._decoderOptions=t}async _createDecoder(e,t){if(!(await this._track.canDecode())){if("undefined"===typeof VideoDecoder)throw new Error(Ee("VideoDecoder"));throw new Error("This video track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=await this._track.getCodec(),r=await this._track.getRotation();let a=await this._track.getDecoderConfig();const s=await this._track.getTimeResolution();return E(i&&a),a={...a,hardwareAcceleration:this._decoderOptions.hardwareAcceleration,optimizeForLatency:this._decoderOptions.optimizeForLatency},new lo(e,t,i,a,r,s)}_createPacketSink(){return new so(this._track)}async getSample(e,t={}){ro(e);for await(const i of this.mediaSamplesAtTimestamps([e],t))return i;throw new Error("Internal error: Iterator returned nothing.")}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class go{constructor(e,t={}){if(this._rotation=0,this._initPromise=null,this._nextCanvasIndex=0,!(e instanceof Po))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&On(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");void 0!==t.decoderOptions&&mo(t.decoderOptions),this._videoTrack=e,this._alpha=t.alpha??!1,this._options=t,this._fit=t.fit??"fill",this._videoSampleSink=new po(e,t.decoderOptions),this._canvasPool=Array.from({length:t.poolSize??0},()=>null)}_ensureInit(){return this._initPromise??(this._initPromise=(async()=>{const e=this._options,t=this._videoTrack,i=e.rotation??await t.getRotation(),r=await t.getSquarePixelWidth(),a=await t.getSquarePixelHeight(),[s,n]=i%180===0?[r,a]:[a,r];let o=e.crop;o&&(o=Nn(o,s,n));let[c,l]=o?[o.width,o.height]:[s,n];const u=c/l;void 0!==e.width&&void 0===e.height?(c=e.width,l=Math.round(c/u)):void 0===e.width&&void 0!==e.height?(l=e.height,c=Math.round(l*u)):void 0!==e.width&&void 0!==e.height&&(c=e.width,l=e.height),this._width=c,this._height=l,this._rotation=i,this._crop=o})())}_videoSampleToWrappedCanvas(e){const t=this._width,i=this._height;let r=this._canvasPool[this._nextCanvasIndex],a=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=t,r.height=i):r=new OffscreenCanvas(t,i),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),a=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const s=r.getContext("2d",{alpha:this._alpha||xe()});E(s),e._drawWithFitAndMipmapping(r,s,{fit:this._fit,rotation:this._rotation,crop:this._crop,targetIsFresh:a,fillBlack:!this._alpha&&xe()});const n={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),n}async getCanvas(e,t){ro(e),await this._ensureInit();const i=await this._videoSampleSink.getSample(e,t);return i&&this._videoSampleToWrappedCanvas(i)}async*canvases(e,t,i){await this._ensureInit(),yield*ce(this._videoSampleSink.samples(e,t,i),e=>this._videoSampleToWrappedCanvas(e))}async*canvasesAtTimestamps(e,t){await this._ensureInit(),yield*ce(this._videoSampleSink.samplesAtTimestamps(e,t),e=>e&&this._videoSampleToWrappedCanvas(e))}}class ko extends no{constructor(e,t,i,r){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new Se,this.customDecoderQueueSize=0,this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0;const a=t=>{let i=t.timestamp;null!==this.expectedFirstTimestamp&&null===this.currentTimestamp&&(this.timestampOffset=this.expectedFirstTimestamp-i),i+=this.timestampOffset,(null===this.currentTimestamp||Math.abs(i-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=i);const a=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const s=r.sampleRate;t.setTimestamp(Math.round(a*s)/s),e(t)},s=to.find(e=>e.supports(i,r));if(s)this.customDecoder=new s,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof Xn))throw new TypeError("The argument passed to onSample must be an AudioSample.");a(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{a(new Xn(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(r)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(E(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--)):(E(this.decoder),this.expectedFirstTimestamp??(this.expectedFirstTimestamp=e.timestamp),this.decoder.decode(e.toEncodedAudioChunk()))}async flush(){this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(E(this.decoder),await this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(E(this.decoder),"closed"!==this.decoder.state&&this.decoder.close())}}class yo extends no{constructor(e,t,i){super(e,t),this.decoderConfig=i,this.currentTimestamp=null,E(pi.includes(i.codec)),this.codec=i.codec;const{dataType:r,sampleSize:a,littleEndian:s}=Bi(this.codec);switch(this.inputSampleSize=a,a){case 1:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint8(t)-128:"signed"===r?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===r?this.readInputValue=(e,t)=>(e=>{let t=0,i=0,r=~e;128&r&&(r&=-129,t=-1),i=5+((240&r)>>4);const a=(1<(e=>{let t=0,i=0,r=85^e;128&r&&(r&=-129,t=-1),i=4+((240&r)>>4);let a=0;return a=4!==i?1<e.getUint16(t,s)-32768:"signed"===r?this.readInputValue=(e,t)=>e.getInt16(t,s):E(!1);break;case 3:"unsigned"===r?this.readInputValue=(e,t)=>ne(e,t,s)-2**23:"signed"===r?this.readInputValue=(e,t)=>((e,t,i)=>ne(e,t,i)<<8>>8)(e,t,s):E(!1);break;case 4:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint32(t,s)-2**31:"signed"===r?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===r?this.readInputValue=(e,t)=>e.getFloat32(t,s):E(!1);break;case 8:"float"===r?this.readInputValue=(e,t)=>e.getFloat64(t,s):E(!1);break;default:se(a),E(!1)}switch(a){case 1:"ulaw"===r||"alaw"===r?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,i)=>e.setUint8(t,i+128));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i<<8,!0);break;case 4:this.outputSampleSize=4,"float"===r?(this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0);break;default:se(a),E(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=N(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,r=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,a=new ArrayBuffer(r),s=new DataView(a);for(let l=0;l=n)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=n;const c=new Xn({format:this.outputFormat,data:a,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:o});this.onSample(c)}async flush(){}close(){}}class bo extends oo{constructor(e){if(!(e instanceof Io))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}async _createDecoder(e,t){if(!(await this._track.canDecode())){if("undefined"===typeof AudioDecoder)throw new Error(Ee("AudioDecoder"));throw new Error("This audio track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=await this._track.getCodec(),r=await this._track.getDecoderConfig();return E(i&&r),pi.includes(r.codec)?new yo(e,t,r):new ko(e,t,i,r)}_createPacketSink(){return new so(this._track)}async getSample(e,t={}){ro(e);for await(const i of this.mediaSamplesAtTimestamps([e],t))return i;throw new Error("Internal error: Iterator returned nothing.")}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class wo{constructor(e){if(!(e instanceof Io))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new bo(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}async getBuffer(e,t){ro(e);const i=await this._audioSampleSink.getSample(e,t);return i&&this._audioSampleToWrappedArrayBuffer(i)}buffers(e,t,i){return ce(this._audioSampleSink.samples(e,t,i),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e,t){return ce(this._audioSampleSink.samplesAtTimestamps(e,t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class To{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof Po}isAudioTrack(){return this instanceof Io}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}async getInternalCodecId(){return this._backing.getInternalCodecId()}get internalCodecId(){return So(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}async getLanguageCode(){return this._backing.getLanguageCode()}get languageCode(){return So(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}async getName(){return this._backing.getName()}get name(){return So(this._backing.getName(),"name","getName")}async getTimeResolution(){return this._backing.getTimeResolution()}get timeResolution(){return So(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}async isRelativeToUnixEpoch(){return this._backing.isRelativeToUnixEpoch()}async getUnixTimeForTimestamp(e){return this._backing.getUnixTimeForTimestamp(e)}async hasUnixTimeMapping(){return null!==await this._backing.getUnixTimeForTimestamp(await this.getFirstTimestamp())}async getDisposition(){return this._backing.getDisposition()}get disposition(){return So(this._backing.getDisposition(),"disposition","getDisposition")}async getBitrate(){return this._backing.getBitrate()}async getAverageBitrate(){return this._backing.getAverageBitrate()}async getFirstTimestamp(){const e=await this._backing.getFirstPacket({metadataOnly:!0});return e?.timestamp??0}async computeDuration(e){const t=await this._backing.getPacket(1/0,{metadataOnly:!0,...e});return fe((t?.timestamp??0)+(t?.duration??0),await this.getTimeResolution())}async getDurationFromMetadata(e={}){return this._backing.getDurationFromMetadata(e)}async computePacketStats(e=1/0,t){const i=new so(this);let r=1/0,a=-1/0,s=0,n=0;for await(const o of i.packets(void 0,void 0,{metadataOnly:!0,...t})){if(s>=e&&o.timestamp>=a)break;r=Math.min(r,o.timestamp),a=Math.max(a,o.timestamp+o.duration),s++,n+=o.byteLength}return{packetCount:s,averagePacketRate:s?Number((s/(a-r)).toPrecision(16)):0,averageBitrate:s?Number((8*n/(a-r)).toPrecision(16)):0}}async isLive(){return null!==await this._backing.getLiveRefreshInterval()}async getLiveRefreshInterval(){return this._backing.getLiveRefreshInterval()}canBePairedWith(e){if(!(e instanceof To))throw new TypeError("other must be an InputTrack.");return this.input===e.input&&this!==e&&0n!==(this._backing.getPairingMask()&e._backing.getPairingMask())}async getPairableTracks(e){return this.input.getTracks(Eo({filter:e=>e.canBePairedWith(this)},e))}async getPairableVideoTracks(e){return this.input.getVideoTracks(Eo({filter:e=>e.canBePairedWith(this)},e))}async getPairableAudioTracks(e){return this.input.getAudioTracks(Eo({filter:e=>e.canBePairedWith(this)},e))}async getPrimaryPairableVideoTrack(e){return this.input.getPrimaryVideoTrack(Eo({filter:e=>e.canBePairedWith(this)},e))}async getPrimaryPairableAudioTrack(e){return this.input.getPrimaryAudioTrack(Eo({filter:e=>e.canBePairedWith(this)},e))}async hasPairableTrack(e){e&&(e=vo(e));const t=await this.input.getTracks();for(const i of t)if(this.canBePairedWith(i)&&(!e||await e(i)))return!0;return!1}hasPairableVideoTrack(e){return e&&(e=vo(e)),this.hasPairableTrack(async t=>t.isVideoTrack()&&(!e||await e(t)))}hasPairableAudioTrack(e){return e&&(e=vo(e)),this.hasPairableTrack(async t=>t.isAudioTrack()&&(!e||await e(t)))}}const So=(e,t,i)=>{if(Re(e))throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${i}()' instead.`);return e},vo=e=>{if(void 0!==e&&"function"!==typeof e)throw new TypeError("predicate, when provided, must be a function.");return e?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("predicate must return or resolve to a boolean value.");return e},r=e(t);return Re(r)?r.then(i):i(r)}:void 0};class Po extends To{constructor(e,t){super(e,t),this._pixelAspectRatioCache=null,this._backing=t}get type(){return"video"}async getCodec(){return this._backing.getCodec()}get codec(){return So(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await(this._backing.getHasOnlyKeyPackets?.())??"prores"===await this._backing.getCodec()}async getCodedWidth(){return this._backing.getCodedWidth()}get codedWidth(){return So(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}async getCodedHeight(){return this._backing.getCodedHeight()}get codedHeight(){return So(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}async getRotation(){return this._backing.getRotation()}get rotation(){return So(this._backing.getRotation(),"rotation","getRotation")}async getSquarePixelWidth(){return this._backing.getSquarePixelWidth()}get squarePixelWidth(){return So(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}async getSquarePixelHeight(){return this._backing.getSquarePixelHeight()}get squarePixelHeight(){return So(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}async getPixelAspectRatio(){return this._pixelAspectRatioCache??(this._pixelAspectRatioCache=Ue({num:await this.getSquarePixelWidth()*await this.getCodedHeight(),den:await this.getSquarePixelHeight()*await this.getCodedWidth()}))}get pixelAspectRatio(){return this._pixelAspectRatioCache??(this._pixelAspectRatioCache=Ue({num:So(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*So(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:So(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*So(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")}))}async getDisplayWidth(){const e=await(this._backing.getMetadataDisplayWidth?.());if(null!=e)return e;return await this.getRotation()%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight()}get displayWidth(){const e=this._backing.getMetadataDisplayWidth?.();if(void 0!==e){const t=So(e,"displayWidth","getDisplayWidth");if(null!==t)return t}const t=So(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return So(t,"displayWidth","getDisplayWidth")}async getDisplayHeight(){const e=await(this._backing.getMetadataDisplayHeight?.());if(null!=e)return e;return await this.getRotation()%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth()}get displayHeight(){const e=this._backing.getMetadataDisplayHeight?.();if(void 0!==e){const t=So(e,"displayHeight","getDisplayHeight");if(null!==t)return t}const t=So(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return So(t,"displayHeight","getDisplayHeight")}async getColorSpace(){return this._backing.getColorSpace()}async hasHighDynamicRange(){const e=await this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pq"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix}async canBeTransparent(){return this._backing.canBeTransparent()}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await(this._backing.getMetadataCodecParameterString?.());if(null!=e)return e;const t=await this._backing.getDecoderConfig();return t?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const t=await this._backing.getCodec();if(E(null!==t),eo.some(i=>i.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(await VideoDecoder.isConfigSupported(e)).supported}catch(e){return Ke._error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Wi))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");const t=await this.getCodec();if(null===t)return null;const i=await this.getDecoderConfig();return E(i),Vt(t,i,e.data)}async computeFrameRateMetrics(e={}){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.targetPacketCount&&(!Ne(e.targetPacketCount)||e.targetPacketCount<0))throw new TypeError("options.targetPacketCount must be a non-negative number.");const t=await this.getTimeResolution(),i=e.targetPacketCount??256,r=new so(this),a=[];let s=-1/0,n=0;for await(const I of r.packets(void 0,void 0,{metadataOnly:!0})){if(a.length>=i&&I.timestamp>=s)break;a.push(I.timestamp),s=Math.max(s,I.timestamp),n++}const o=new Float64Array(a.length);for(let I=0;Ie-t),b=k-1>>1,w=k>>1;let T=0,S=0,v=0;for(const I of y)if(v+=f.get(I),0===T&&v>b&&(T=I),v>w){S=I;break}const P=(d/T+d/S)/2;return{underlyingFrameRate:u,bestGuessFrameRate:null!==u?u:Ao(P),minFrameRate:d/p,maxFrameRate:d/m,averageFrameRate:d*k/g,medianFrameRate:P,frameRateIsConstant:null!==u&&1===m&&1===p,probedPacketCount:n}}}class Io extends To{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}async getCodec(){return this._backing.getCodec()}get codec(){return So(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await(this._backing.getHasOnlyKeyPackets?.())??!0}async getNumberOfChannels(){return this._backing.getNumberOfChannels()}get numberOfChannels(){return So(this._backing.getNumberOfChannels(),"numberOfChannels","getNumberOfChannels")}async getSampleRate(){return this._backing.getSampleRate()}get sampleRate(){return So(this._backing.getSampleRate(),"sampleRate","getSampleRate")}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){const e=await(this._backing.getMetadataCodecParameterString?.());if(null!=e)return e;const t=await this._backing.getDecoderConfig();return t?.codec??null}async canDecode(){try{const e=await this._backing.getDecoderConfig();if(!e)return!1;const t=await this._backing.getCodec();if(E(null!==t),to.some(i=>i.supports(t,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof AudioDecoder)return!1;return!0===(await AudioDecoder.isConfigSupported(e)).supported}catch(e){return Ke._error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Wi))throw new TypeError("packet must be an EncodedPacket.");return null===await this.getCodec()?null:"key"}}const xo=e=>-(e??-1/0),Co=e=>-e,Bo=e=>{if("object"!==typeof e||!e)throw new TypeError("query must be an object.");if(void 0!==e.filter&&"function"!==typeof e.filter)throw new TypeError("query.filter, when provided, must be a function.");if(void 0!==e.sortBy&&"function"!==typeof e.sortBy)throw new TypeError("query.sortBy, when provided, must be a function.");return{filter:e.filter?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("query.filter must return or resolve to a boolean.");return e},r=e.filter(t);return Re(r)?r.then(i):i(r)}:void 0,sortBy:e.sortBy?t=>{const i=e=>{if("number"!==typeof e&&(!Array.isArray(e)||!e.every(e=>"number"===typeof e)))throw new TypeError("query.sortBy must return or resolve to a number or an array of numbers.");return e},r=e.sortBy(t);return Re(r)?r.then(i):i(r)}:void 0}},Eo=(e,t)=>({filter:e?.filter||t?.filter?i=>{const r=e?.filter?.(i)??!0,a=e=>!1!==e&&(t?.filter?.(i)??!0);return Re(r)?r.then(a):a(r)}:void 0,sortBy:e?.sortBy||t?.sortBy?i=>{const r=e?.sortBy?.(i)??[],a=t?.sortBy?.(i)??[],s=(e,t)=>[...Array.isArray(e)?e:[e],...Array.isArray(t)?t:[t]];return Re(r)||Re(a)?Promise.all([r,a]).then(([e,t])=>s(e,t)):s(r,a)}:void 0}),_o=async(e,t)=>{let i=e;if(t?.filter){const r=e.map(e=>t.filter(e));if(r.some(e=>Re(e))){const t=await Promise.all(r);i=e.filter((e,i)=>t[i])}else i=e.filter((e,t)=>r[t])}if(!t?.sortBy)return i;const r=i.map(e=>t.sortBy(e)),a=r.some(e=>Re(e))?await Promise.all(r):r;return i.map((e,t)=>({track:e,sortValue:a[t]})).sort((e,t)=>{const i=Array.isArray(e.sortValue)?e.sortValue:[e.sortValue],r=Array.isArray(t.sortValue)?t.sortValue:[t.sortValue],a=Math.max(i.length,r.length);for(let s=0;se.track)},Ro=(e,t)=>{const i=1e6,r=1+1e-9,a=[12,15,20,24e3/1001,24,25,3e4/1001,30,48,50,6e4/1001,60,100,12e4/1001,120,144,240];if(e.length<2)return null;const s=new Float64Array(e.length-1);for(let T=1;T0))return null;s[T-1]=t}const n=s.slice();n.sort();let o=n[Math.floor(.05*n.length)];for(let T=0;T<6;T++){let e=0,t=0;for(const a of s){const i=Math.max(1,Math.round(a/o));Math.abs(a-i*o)>=r||(e+=a,t+=i)}if(0===t)return null;const i=e/t;if(Math.abs(i-o)<=1e-12*Math.max(1,o)){o=i;break}o=i}let c=0,l=0,u=0;for(const T of s){const e=Math.max(1,Math.round(T/o));Math.abs(T-e*o)>=r||(c++,l+=T,u+=e)}if(c/s.length<.98)return null;o=l/u;const d=1/Math.min(u,1e3),h=Math.max(Number.EPSILON,o-d),f=o+d,m=t/f,p=t/h,g=t/o;let k=null,y=1/0;for(const T of a){if(Tp)continue;const e=Math.abs(T/g-1);e{for(let r=1;r<=i;r++){const i=Math.floor(e*r)+1;if(i/r{const t=[24/1.001,30/1.001,60/1.001,120/1.001],i=[12,15,20,24,25,30,48,50,60,100,120,144,240];for(const s of t)if(Math.abs(s/e-1)<=5e-4)return s;let r=e,a=1/0;for(const s of i){const t=Math.abs(s/e-1);t<=.025&&t!(e instanceof Gs)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(e.source instanceof Ts||e.source instanceof Ss))throw new TypeError("options.source must be a Source or SourceRef.");if(e.source instanceof Ts&&e.source._disposed)throw new TypeError("options.source must not be a disposed Source.");if(void 0!==e.initInput&&!(e.initInput instanceof Mo))throw new TypeError("options.initInput, when provided, must be an Input.");void 0!==e.formatOptions&&((e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(`${t}, when provided, must be an object.`);if(void 0!==e.isobmff){if(!e.isobmff||"object"!==typeof e.isobmff)throw new TypeError(`${t}.isobmff, when provided, must be an object.`);if(void 0!==e.isobmff.resolveKeyId&&"function"!==typeof e.isobmff.resolveKeyId)throw new TypeError(`${t}.isobmff.resolveKeyId, when provided, must be a function.`)}if(void 0!==e.hls){if(!e.hls||"object"!==typeof e.hls)throw new TypeError(`${t}.hls, when provided, must be an object.`);if(void 0!==e.hls.offsetTimestampsByDateTime&&"boolean"!==typeof e.hls.offsetTimestampsByDateTime)throw new TypeError(`${t}.hls.offsetTimestampsByDateTime, when provided, must be a boolean.`)}})(e.formatOptions,"formatOptions"),this._formats=e.formats,this._initInput=e.initInput??null,this._formatOptions=e.formatOptions??{},e.source instanceof Ts?this._rootRef=e.source.ref():this._rootRef=e.source,this._sourceRefs.push(this._rootRef)}get _rootSource(){return this._rootRef.source}async _getSourceUncached(e){E(this._rootSource instanceof vs);const t=await this._rootSource._resolveRequest(e);return this._emit("source",{source:t.source,request:e,isRoot:e.isRoot}),t}_getSourceCached(e,t=1){const i=this._sourceCache.find(i=>i.cacheGroup===t&&Ps(i.request,e));if(i)return i.age++,Promise.resolve(i.sourceRef.source.ref());const r=this._sourceCachePromises.find(i=>i.cacheGroup===t&&Ps(i.request,e));if(r)return r.promise.then(e=>e.sourceRef.source.ref());const a=(async()=>{const i=await this._getSourceUncached(e);if(ze(this._sourceCache,e=>e.cacheGroup===t&&1===e.sourceRef.source._refCount)>=4){const e=Le(this._sourceCache,e=>e.cacheGroup===t&&1===e.sourceRef.source._refCount?e.age:1/0);E(-1!==e);const i=this._sourceCache[e];this._sourceCache.splice(e,1),i.sourceRef.free(),ie(this._sourceRefs,i.sourceRef)}this._sourceRefs.push(i);const r=this._sourceCachePromises.findIndex(t=>t.request===e);E(-1!==r),this._sourceCachePromises.splice(r,1);return{request:e,sourceRef:i,age:this._nextSourceCacheAge++,cacheGroup:t}})();return this._sourceCachePromises.push({request:e,cacheGroup:t,promise:a}),a.then(e=>{const t=e.sourceRef.source.ref();return this._sourceCache.push(e),t})}_getDemuxer(){return this._demuxerPromise??(this._demuxerPromise=(async()=>{this._reader=new zo(this._rootSource),this._emit("source",{source:this._rootSource,request:null,isRoot:!0});for(const e of this._formats){if(await e._canReadInput(this))return this._format=e,this._onFormatDetermined?.(e),e._createDemuxer(this)}throw new No})())}get source(){return this._rootSource}async getFormat(){return await this._getDemuxer(),E(this._format),this._format}async canRead(){try{return await this._getDemuxer(),!0}catch(e){if(e instanceof No)return!1;throw e}}async getFirstTimestamp(e){e??(e=await this.getTracks());const t=e.filter(e=>null!==e);if(0===t.length)return 0;const i=await Promise.all(t.map(e=>e._backing.getFirstPacket({metadataOnly:!0}))),r=Math.min(...i.map(e=>e?.timestamp??1/0));return r===1/0?0:r}async computeDuration(e,t){e??(e=await this.getTracks());const i=e.filter(e=>null!==e);if(0===i.length)return 0;const r=await Promise.all(i.map(e=>e.computeDuration(t)));return Math.max(...r)}async getDurationFromMetadata(e,t){e??(e=await this.getTracks());const i=e.filter(e=>null!==e),r=(await Promise.all(i.map(e=>e.getDurationFromMetadata(t)))).filter(e=>null!==e);return 0===r.length?null:Math.max(...r)}async getTracks(e){e&&(e=Bo(e));const t=(await this._getTrackBackings()).map(e=>this._wrapBackingAsTrack(e));return _o(t,e)}async getVideoTracks(e){e&&(e=Bo(e));const t=(await this.getTracks()).filter(e=>e.isVideoTrack());return _o(t,e)}async getAudioTracks(e){e&&(e=Bo(e));const t=(await this.getTracks()).filter(e=>e.isAudioTrack());return _o(t,e)}async getPrimaryVideoTrack(e){e&&(e=Bo(e));const t=Eo(e,{sortBy:async e=>[Co((await e.getDisposition()).default),Co(await e.hasPairableAudioTrack()),Co(!(await e.hasOnlyKeyPackets())),xo(await e.getBitrate())]});return(await this.getVideoTracks(t))[0]??null}async getPrimaryAudioTrack(e){e&&(e=Bo(e));const t=await this.getPrimaryVideoTrack(),i=Eo(e,{sortBy:async e=>[Co(!t||e.canBePairedWith(t)),Co((await e.getDisposition()).default),xo(await e.getBitrate())]});return(await this.getAudioTracks(i))[0]??null}async _getTrackBackings(){const e=await this._getDemuxer();return this._trackBackingsCache??(this._trackBackingsCache=await e.getTrackBackings())}_wrapBackingAsTrack(e){const t=this._backingToTrack.get(e);if(t)return t;const i="video"===e.getType()?new Po(this,e):new Io(this,e);return this._backingToTrack.set(e,i),i}async getMimeType(){return(await this._getDemuxer()).getMimeType()}async getMetadataTags(){return(await this._getDemuxer()).getMetadataTags()}dispose(){if(!this._disposed){this._disposed=!0;for(const e of this._sourceRefs)e.free();this._sourceRefs.length=0,this._demuxerPromise&&this._demuxerPromise.then(e=>e.dispose()).catch(()=>{})}}[Symbol.dispose](){this.dispose()}}class No extends Error{constructor(e="Input has an unsupported or unrecognizable format."){super(e),this.name="UnsupportedInputFormatError"}}class Oo extends Error{constructor(e="Input has been disposed."){super(e),this.name="InputDisposedError"}}class zo{constructor(e){this.source=e}get fileSize(){const e=this.source._getFileSize();if(void 0===e)throw new Error("Reading 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t=0;for(;;){if(1===e.length&&null!==this.fileSizeNonStrict)return this.requestSlice(0,this.fileSizeNonStrict);let i=this.requestSliceRange(t,0,1024);if(Re(i)&&(i=await i),!i||0===i.length)break;const r=qo(i,i.length);e.push(r),t+=i.length}const i=new Uint8Array(t);let r=0;for(const a of e)i.set(a,r),r+=a.length;return new Lo(i,N(i),0,0,t)})()}}class Lo{constructor(e,t,i,r,a){this.bytes=e,this.view=t,this.offset=i,this.start=r,this.end=a,this.bufferPos=r-i}static tempFromBytes(e){return new Lo(e,N(e),0,0,e.length)}get length(){return this.end-this.start}get filePos(){return this.offset+this.bufferPos}set filePos(e){this.bufferPos=e-this.offset}get remainingLength(){return Math.max(this.end-this.filePos,0)}skip(e){this.bufferPos+=e}slice(e,t=this.end-e){if(ethis.end)throw new RangeError("Slicing outside of original slice.");return new Lo(this.bytes,this.view,this.offset,e,e+t)}}const Uo=(e,t)=>{if(e.filePose.end)throw new RangeError(`Tried reading [${e.filePos}, ${e.filePos+t}), but slice is [${e.start}, ${e.end}). This is likely an internal error, please report it alongside the file that caused it.`)},qo=(e,t)=>{Uo(e,t);const i=e.bytes.subarray(e.bufferPos,e.bufferPos+t);return e.bufferPos+=t,i},Wo=e=>(Uo(e,1),e.view.getUint8(e.bufferPos++)),Ho=(e,t)=>{Uo(e,2);const i=e.view.getUint16(e.bufferPos,t);return e.bufferPos+=2,i},Vo=e=>{Uo(e,2);const t=e.view.getUint16(e.bufferPos,!1);return e.bufferPos+=2,t},jo=e=>{Uo(e,3);const t=ne(e.view,e.bufferPos,!1);return e.bufferPos+=3,t},Ko=e=>{Uo(e,2);const t=e.view.getInt16(e.bufferPos,!1);return e.bufferPos+=2,t},Xo=(e,t)=>{Uo(e,4);const i=e.view.getUint32(e.bufferPos,t);return e.bufferPos+=4,i},$o=e=>{Uo(e,4);const t=e.view.getUint32(e.bufferPos,!1);return e.bufferPos+=4,t},Go=e=>{Uo(e,4);const t=e.view.getUint32(e.bufferPos,!0);return e.bufferPos+=4,t},Qo=e=>{Uo(e,4);const t=e.view.getInt32(e.bufferPos,!1);return e.bufferPos+=4,t},Yo=(e,t)=>{let i,r;return t?(i=Xo(e,!0),r=Xo(e,!0)):(r=Xo(e,!1),i=Xo(e,!1)),4294967296*r+i},Jo=e=>4294967296*$o(e)+$o(e),Zo=e=>4294967296*Qo(e)+$o(e),ec=e=>{const t=Go(e),i=(e=>{Uo(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*i+t},tc=e=>{Uo(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},ic=e=>{Uo(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},rc=(e,t)=>{Uo(e,t);let i="";for(let r=0;rO.decode(qo(e,t)).split("\n").map(e=>e.trim()).filter(e=>e.length>0&&!i?.ignore?.(e));var sc,nc,oc,cc;(nc=sc||(sc={}))[nc.Unsynchronisation=128]="Unsynchronisation",nc[nc.ExtendedHeader=64]="ExtendedHeader",nc[nc.ExperimentalIndicator=32]="ExperimentalIndicator",nc[nc.Footer=16]="Footer",(cc=oc||(oc={}))[cc.ISO_8859_1=0]="ISO_8859_1",cc[cc.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",cc[cc.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",cc[cc.UTF_8=3]="UTF_8";const lc=128,uc=10,dc=["Blues","Classic rock","Country","Dance","Disco","Funk","Grunge","Hip-hop","Jazz","Metal","New age","Oldies","Other","Pop","Rhythm and blues","Rap","Reggae","Rock","Techno","Industrial","Alternative","Ska","Death metal","Pranks","Soundtrack","Euro-techno","Ambient","Trip-hop","Vocal","Jazz & funk","Fusion","Trance","Classical","Instrumental","Acid","House","Game","Sound clip","Gospel","Noise","Alternative rock","Bass","Soul","Punk","Space","Meditative","Instrumental pop","Instrumental rock","Ethnic","Gothic","Darkwave","Techno-industrial","Electronic","Pop-folk","Eurodance","Dream","Southern rock","Comedy","Cult","Gangsta","Top 40","Christian rap","Pop/funk","Jungle music","Native US","Cabaret","New wave","Psychedelic","Rave","Showtunes","Trailer","Lo-fi","Tribal","Acid punk","Acid jazz","Polka","Retro","Musical","Rock 'n' roll","Hard rock","Folk","Folk rock","National folk","Swing","Fast fusion","Bebop","Latin","Revival","Celtic","Bluegrass","Avantgarde","Gothic rock","Progressive rock","Psychedelic rock","Symphonic rock","Slow rock","Big band","Chorus","Easy listening","Acoustic","Humour","Speech","Chanson","Opera","Chamber music","Sonata","Symphony","Booty bass","Primus","Porn groove","Satire","Slow jam","Club","Tango","Samba","Folklore","Ballad","Power ballad","Rhythmic Soul","Freestyle","Duet","Punk rock","Drum solo","A cappella","Euro-house","Dance hall","Goa music","Drum & bass","Club-house","Hardcore techno","Terror","Indie","Britpop","Negerpunk","Polsk punk","Beat","Christian gangsta rap","Heavy metal","Black metal","Crossover","Contemporary Christian","Christian rock","Merengue","Salsa","Thrash metal","Anime","Jpop","Synthpop","Christmas","Art rock","Baroque","Bhangra","Big beat","Breakbeat","Chillout","Downtempo","Dub","EBM","Eclectic","Electro","Electroclash","Emo","Experimental","Garage","Global","IDM","Illbient","Industro-Goth","Jam Band","Krautrock","Leftfield","Lounge","Math rock","New romantic","Nu-breakz","Post-punk","Post-rock","Psytrance","Shoegaze","Space rock","Trop rock","World music","Neoclassical","Audiobook","Audio theatre","Neue Deutsche Welle","Podcast","Indie rock","G-Funk","Dubstep","Garage rock","Psybient"],hc=(e,t)=>{var i;const r=e.filePos;t.raw??(t.raw={}),(i=t.raw).TAG??(i.TAG=qo(e,lc-3)),e.filePos=r;const a=fc(e,30);a&&(t.title??(t.title=a));const s=fc(e,30);s&&(t.artist??(t.artist=s));const n=fc(e,30);n&&(t.album??(t.album=n));const o=fc(e,4),c=Number.parseInt(o,10);Number.isInteger(c)&&c>0&&(t.date??(t.date=new Date(String(c))));const l=qo(e,30);let u;if(0===l[28]&&0!==l[29]){const i=l[29];i>0&&(t.trackNumber??(t.trackNumber=i)),e.skip(-30),u=fc(e,28),e.skip(2)}else e.skip(-30),u=fc(e,30);u&&(t.comment??(t.comment=u));const d=Wo(e);d{const i=qo(e,t),r=Fe(i.indexOf(0),i.length),a=i.subarray(0,r);let s="";for(let n=0;n{const t=e.filePos,i=rc(e,3),r=Wo(e),a=Wo(e),s=Wo(e),n=$o(e);if("ID3"!==i||255===r||255===a||0!==(2155905152&n))return e.filePos=t,null;let o=Ni(n);return s&sc.Footer&&(o+=uc),{majorVersion:r,revision:a,flags:s,size:o}},pc=(e,t,i)=>{var r,a,s,n,o;if(![2,3,4].includes(t.majorVersion))return void Ke._warn(`Unsupported ID3v2 major version: ${t.majorVersion}`);const c=t.flags&sc.Footer?t.size-uc:t.size,l=qo(e,c),u=new gc(t,l);if(t.flags&sc.Unsynchronisation&&3===t.majorVersion&&u.ununsynchronizeAll(),t.flags&sc.ExtendedHeader){const e=u.readU32();3===t.majorVersion?u.pos+=e:u.pos+=e-4}for(;u.pos<=u.bytes.length-u.frameHeaderSize();){const e=u.readId3V2Frame();if(!e)break;const c=u.pos,l=u.pos+e.size;let d=!1,h=!1,f=!1;if(3===t.majorVersion?(d=!!(64&e.flags),h=!!(128&e.flags)):4===t.majorVersion&&(d=!!(4&e.flags),h=!!(8&e.flags),f=!!(2&e.flags)||!!(t.flags&sc.Unsynchronisation)),d)Ke._warn(`Skipping encrypted ID3v2 frame ${e.id}`),u.pos=l;else if(h)Ke._warn(`Skipping compressed ID3v2 frame ${e.id}`),u.pos=l;else{if(f&&u.ununsynchronizeRegion(u.pos,l),i.raw??(i.raw={}),"TXXX"===e.id){const e=(r=i.raw).TXXX??(r.TXXX={}),t=u.readId3V2TextEncoding(),a=u.readId3V2Text(t,l),s=u.readId3V2Text(t,l);e[a]??(e[a]=s)}else"T"===e.id[0]?(a=i.raw)[s=e.id]??(a[s]=u.readId3V2EncodingAndText(l)):(n=i.raw)[o=e.id]??(n[o]=u.readBytes(e.size));switch(u.pos=c,e.id){case"TIT2":case"TT2":i.title??(i.title=u.readId3V2EncodingAndText(l));break;case"TIT3":case"TT3":i.description??(i.description=u.readId3V2EncodingAndText(l));break;case"TPE1":case"TP1":i.artist??(i.artist=u.readId3V2EncodingAndText(l));break;case"TALB":case"TAL":i.album??(i.album=u.readId3V2EncodingAndText(l));break;case"TPE2":case"TP2":i.albumArtist??(i.albumArtist=u.readId3V2EncodingAndText(l));break;case"TRCK":case"TRK":{const e=u.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(i.trackNumber??(i.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&(i.tracksTotal??(i.tracksTotal=r))}break;case"TPOS":case"TPA":{const e=u.readId3V2EncodingAndText(l).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(i.discNumber??(i.discNumber=t)),r&&Number.isInteger(r)&&r>0&&(i.discsTotal??(i.discsTotal=r))}break;case"TCON":case"TCO":{const e=u.readId3V2EncodingAndText(l);let t=/^\((\d+)\)/.exec(e);if(t){const e=Number.parseInt(t[1]);if(void 0!==dc[e]){i.genre??(i.genre=dc[e]);break}}if(t=/^\d+$/.exec(e),t){const e=Number.parseInt(t[0]);if(void 0!==dc[e]){i.genre??(i.genre=dc[e]);break}}i.genre??(i.genre=e)}break;case"TDRC":case"TDAT":{const e=u.readId3V2EncodingAndText(l),t=new Date(e);Number.isNaN(t.getTime())||(i.date??(i.date=t))}break;case"TYER":case"TYE":{const e=u.readId3V2EncodingAndText(l),t=Number.parseInt(e,10);Number.isInteger(t)&&(i.date??(i.date=new Date(String(t))))}break;case"USLT":case"ULT":{const e=u.readU8();u.pos+=3,u.readId3V2Text(e,l),i.lyrics??(i.lyrics=u.readId3V2Text(e,l))}break;case"COMM":case"COM":{const e=u.readU8();u.pos+=3,u.readId3V2Text(e,l),i.comment??(i.comment=u.readId3V2Text(e,l))}break;case"APIC":case"PIC":{const e=u.readId3V2TextEncoding();let r;if(2===t.majorVersion){const e=u.readAscii(3);r="PNG"===e?"image/png":"JPG"===e?"image/jpeg":"image/*"}else r=u.readId3V2Text(e,l);const a=u.readU8(),s=u.readId3V2Text(e,l).trimEnd(),n=l-u.pos;if(n>=0){const e=u.readBytes(n);i.images||(i.images=[]),i.images.push({data:e,mimeType:r,kind:3===a?"coverFront":4===a?"coverBack":"unknown",description:s})}}break;default:u.pos+=e.size}u.pos=l}}};class gc{constructor(e,t){this.header=e,this.bytes=t,this.pos=0,this.view=new DataView(t.buffer,t.byteOffset,t.byteLength)}frameHeaderSize(){return 2===this.header.majorVersion?6:10}ununsynchronizeAll(){const e=[];for(let t=0;t{const t=this.pos+e;if(t>this.bytes.length)return!1;if(t<=this.bytes.length-this.frameHeaderSize()){this.pos+=e;const t=this.readAscii(4);if("\0\0\0\0"!==t&&!/[0-9A-Z]{4}/.test(t))return!1}return!0};if(!s(i)){const e=4===this.header.majorVersion?t:Ni(t);s(e)&&(i=e)}return this.pos=a,{id:e,size:i,flags:r}}}readId3V2TextEncoding(){const e=this.readU8();if(e>3)throw new Error(`Unsupported text encoding: ${e}`);return e}readId3V2Text(e,t){const i=this.pos,r=this.readBytes(t-this.pos);switch(e){case oc.ISO_8859_1:{let e="";for(let t=0;t0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}if(254===r[0]&&255===r[1]){const e=new TextDecoder("utf-16be"),t=Fe(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}{const e=Fe(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),O.decode(r.subarray(0,e))}case oc.UTF_16_BE_NO_BOM:{const e=new TextDecoder("utf-16be"),t=Fe(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(0,t))}case oc.UTF_8:{const e=Fe(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),O.decode(r.subarray(0,e))}}}readId3V2EncodingAndText(e){if(this.pos>=e)return"";const t=this.readId3V2TextEncoding();return this.readId3V2Text(t,e)}}class kc{constructor(e){this.events=e,this.input=null,this.audioSink=null,this.audioIterator=null,this.audioContext=null,this.gainNode=null,this.audioContextStartTime=0,this.playbackTimeAtStart=0,this.latestScheduledEndTime=0,this.duration=Number.NaN,this.paused=!0,this.volume=.7,this.muted=!1,this.playbackRate=1,this.asyncId=0,this.queuedNodes=new Set}get currentTime(){return this.paused?this.playbackTimeAtStart:(this.audioContext.currentTime-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart}ensureAudioContext(e){if(this.audioContext)return;const t=window.AudioContext||window.webkitAudioContext;try{this.audioContext=new t({sampleRate:e})}catch{this.audioContext=new t}this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination),this.updateGain()}updateGain(){if(!this.gainNode)return;const e=this.muted?0:this.volume;this.gainNode.gain.value=e*e}stopQueuedNodes(){this.queuedNodes.forEach(e=>e.stop()),this.queuedNodes.clear()}async stopIterator(){await(this.audioIterator?.return()),this.audioIterator=null}handleNoAudioTrack(){this.audioSink=null,this.ensureAudioContext()}async load(e,t){++this.asyncId,await this.stopIterator(),this.stopQueuedNodes(),this.paused=!0,this.playbackTimeAtStart=0,this.audioContextStartTime=0;const{input:i,audioTrack:r,duration:a}=e;return this.input=i,this.duration=a,r?null!==r.codec&&await r.canDecode()?(this.ensureAudioContext(r.sampleRate),this.audioSink=new wo(r),void t?.()):(this.audioSink=null,this.ensureAudioContext(),void t?.()):(this.handleNoAudioTrack(),void t?.())}async runIterator(e){if(!this.audioSink)return;await this.stopIterator(),this.audioIterator=this.audioSink.buffers(this.currentTime);for(;;){if(e!==this.asyncId||this.paused)return;const i=[];let r=!1;try{for(let e=0;e<16;e++){const e=await this.audioIterator.next();if(e.done){r=!0;break}i.push(e.value)}}catch(t){console.error("Audio iterator error:",t),r=!0}if(e!==this.asyncId||this.paused)return;i.length>0&&"suspended"===this.audioContext.state&&(await this.audioContext.resume(),this.events.emit("canplay"),this.events.emit("playing"));for(const{buffer:e,timestamp:t}of i){const i=this.audioContext.createBufferSource();i.buffer=e,i.connect(this.gainNode),i.playbackRate.value=this.playbackRate;const r=this.audioContextStartTime+(t-this.playbackTimeAtStart)/this.playbackRate,a=(r+e.duration/this.playbackRate-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart;a>this.latestScheduledEndTime&&(this.latestScheduledEndTime=a),r>=this.audioContext.currentTime?i.start(r):i.start(this.audioContext.currentTime,(this.audioContext.currentTime-r)*this.playbackRate),this.queuedNodes.add(i),i.onended=()=>this.queuedNodes.delete(i)}if(r)break;await new Promise(e=>setTimeout(e,0));const a=1;for(;this.latestScheduledEndTime-this.currentTime>a;){if(e!==this.asyncId||this.paused)return;await new Promise(e=>setTimeout(e,50))}}}async play(){if(!this.paused)return;this.audioContext||this.ensureAudioContext(),"suspended"===this.audioContext.state&&await this.audioContext.resume(),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart,this.paused=!1;const e=++this.asyncId;this.runIterator(e)}pause(){this.paused||(this.playbackTimeAtStart=this.currentTime,this.paused=!0,this.stopIterator(),this.stopQueuedNodes())}async seek(e){this.playbackTimeAtStart=Math.max(0,e),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart;const t=++this.asyncId;this.paused||this.runIterator(t)}setVolume(e,t){this.volume=e,this.muted=t,this.updateGain()}setPlaybackRate(e){if(e!==this.playbackRate&&(this.paused||(this.playbackTimeAtStart=this.currentTime,this.audioContextStartTime=this.audioContext.currentTime),this.playbackRate=e,!this.paused)){const e=++this.asyncId;this.runIterator(e)}}destroy(){this.asyncId++,this.pause(),this.audioContext?.close(),this.audioContext=null,this.input=null,this.audioSink=null}}async function yc(e){return await e.getAverageBitrate()??await e.getBitrate()??0}const bc=/\.m3u8(?:$|[?#])/i;function wc(e){return"string"===typeof e&&bc.test(e)}function Tc(e){const t=function(e){return"string"===typeof e?new _s(e):e instanceof Blob?new Cs(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new As(e):e??null}(e);return t?new Mo({source:t,formats:wc(e)?Tn:wn}):null}class Sc{constructor(){this.active=!0,this.input=null,this.timers=new Set,this.controller="undefined"===typeof AbortController?void 0:new AbortController,this.cancellation=new Promise(e=>{this.resolveCancellation=e})}get signal(){return this.controller?.signal}own(e){this.active?this.input=e:e.dispose()}defer(e){if(!this.active)return;const t=setTimeout(()=>{this.timers.delete(t),this.active&&e()},0);this.timers.add(t)}async wait(e,t){try{await Promise.race([e,this.cancellation,t>0?this.timeout(t):new Promise(()=>{})])}finally{void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0)}}timeout(e){return new Promise((t,i)=>{this.deadline=setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){const e=this.input;this.input=null,e?.dispose()}cancel(){if(this.active){this.active=!1;for(const e of this.timers)clearTimeout(e);this.timers.clear(),void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0),this.resolveCancellation(),this.controller?.abort(),this.disposeInput()}}}function vc(e,t,i){for(const r of i){if(!t())return;e.emit(r)}}async function Pc({input:e,videoTrack:t,audioTrack:i}){const r=[t,i].filter(e=>null!==e),a=t||i,s=Boolean(a&&await a.isLive());let n=Number.NaN;return r.length>0&&(n=await e.getDurationFromMetadata(r,{skipLiveWait:!0}),null!==n||s||(n=await e.computeDuration(r,{skipLiveWait:!0}))),s?Number.POSITIVE_INFINITY:n??Number.NaN}function Ic(){let e,t;return{promise:new Promise((i,r)=>{e=i,t=r}),resolve:e,reject:t}}class xc{constructor(e){this.host=e,this.wanted=!1,this.playing=null,this.seeking=null,this.audioStart=null}operation(){return{...Ic(),source:this.host.loadSeq,complete:Ic()}}current(e,t){return!this.host.destroyed&&e.source===this.host.loadSeq&&this[t]===e}cancelPlay(){const e=this.playing;this.playing=null,e?.resolve()}invalidate(){this.cancelPlay(),this.wanted=!1;const e=this.seeking;this.seeking=null,e?.complete.resolve(),e?.resolve(),this.host.seeking=!1}ended(){this.wanted=!1,this.cancelPlay()}stop(){this.host.paused||(this.host.paused=!0,this.stopEngines(),this.host.events.emit("pause"))}stopEngines(){const e=[];for(const i of[()=>this.host.audio.pause(),()=>this.host.video.stop()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}pause(){this.wanted=!1,this.cancelPlay(),this.stop()}play(){if(this.host.destroyed)return Promise.resolve();if(this.wanted=!0,this.playing)return this.playing.promise;if(this.host.ended)return this.seek(0,!0);if(!this.host.paused&&!this.seeking)return Promise.resolve();const e=this.operation();return this.playing=e,this.runPlay(e).then(e.resolve,e.reject),e.promise}async startAudio(){this.audioStart||(this.audioStart=this.host.audio.play());const e=this.audioStart;try{await e}finally{this.audioStart===e&&(this.audioStart=null)}}async runPlay(e){const t=()=>this.current(e,"playing")&&this.wanted;try{for(;this.seeking;)if(await this.seeking.complete.promise,!t())return;if(!t())return;if(this.host.paused=!1,await this.startAudio(),!t())return void(this.wanted&&!this.host.destroyed||this.host.audio.pause());this.host.video.start(this.host.audio),vc(this.host.events,t,["play","playing"])}catch(i){if(!t())return;this.wanted=!1,this.host.paused=!0;try{this.stopEngines()}catch(r){console.warn("MediaBunny play cleanup error:",r)}throw i}finally{this.playing===e&&(this.playing=null)}}seek(e,t){return this.position(async t=>{const i=this.host.audio.seek(e),r=t()?this.host.video.seek(e):Promise.resolve();await Promise.all([i,r])},["seeked"],!1,t)}replace(e,t){return this.position(async i=>{e.duration=await Pc(e),i()&&(this.host.media=e,await Promise.all([this.host.video.load(e),this.host.audio.load(e)]),i()&&(await Promise.all([this.host.video.seek(t),this.host.audio.seek(t)]),i()&&(this.host.readyState=4,this.host.networkState=1)))},["loadedmetadata","durationchange","progress","loadeddata","canplay","canplaythrough","seeked"],!0)}position(e,t,i,r){if(this.host.destroyed)return Promise.resolve();this.wanted=r??(this.seeking?this.wanted:!this.host.paused),this.cancelPlay();const a=this.seeking,s=this.operation();return this.seeking=s,a?.complete.resolve(),a?.resolve(),this.runPosition(s,e,t,i).then(s.resolve,s.reject),s.promise}async runPosition(e,t,i,r){const a=()=>this.current(e,"seeking");let s=!1;try{if(r&&this.stop(),!a())return;if(this.host.ended=!1,this.host.seeking=!0,vc(this.host.events,a,["seeking","waiting"]),!a())return;if(r||this.stop(),!a())return;if(await t(a),!a())return;if(this.host.seeking=!1,e.complete.resolve(),vc(this.host.events,a,i),!a())return;this.seeking=null,s=this.wanted}catch(n){if(!a())return;throw this.host.seeking=!1,this.wanted=!1,this.cancelPlay(),this.host.reportError(n),n}finally{e.complete.resolve(),this.seeking===e&&(this.seeking=null)}s&&await this.play()}}const Cc=new WeakMap,Bc=new WeakMap;function Ec(e){const t=Bc.get(e);if(t)return t;const i=Promise.resolve().then(()=>e.next()).then(e=>e.value??null);Bc.set(e,i);const r=()=>{Bc.get(e)===i&&Bc.delete(e)};return i.then(r,r),i}function _c(e,t,i,r,a){const s=i?Math.max(.06,r/Math.max(1,a)):0;return i&&e{if(this.image===a&&t()){this.cancel();try{i(a)}catch(e){r(e)}}},a.onerror=()=>{this.image===a&&this.cancel()},a.src=e}}class Fc{constructor(e,t,i,r){this.host=e,this.ready=t,this.draw=i,this.failure=r,this.stopped=!1,this.closed=!1,this.scheduled=null,this.fetching=null}current(e){return!this.closed&&!this.stopped&&this.host.asyncId===e}async update(e){const t=this.host.videoIterator;if(!t||!this.ready()||!this.current(e)||this.host.isFetching)return;const i={};this.fetching=i,this.host.isFetching=!0;const r=()=>this.current(e)&&this.host.videoIterator===t;try{for(;r();){const e=await Ec(t);if(!r()||!e)return;const i=this.host.audioClock?.currentTime;if(void 0===i)return;const a=_c(e.timestamp,i,this.host.dropLateFrames,this.host.avSyncTolerance,this.host.playbackRate);if("skip"!==a){if("draw"!==a)return void(this.host.nextFrame=e);this.draw(e)}}}catch(a){if(r())throw a}finally{this.fetching===i&&(this.fetching=null,this.host.isFetching=!1)}}request(e){this.update(e).catch(t=>{this.current(e)&&(this.stop(),this.report(t))})}report(e){try{this.failure(e)}catch(t){console.warn("MediaBunny video error listener:",t)}}cancelFrame(){null!==this.scheduled&&(cancelAnimationFrame(this.scheduled),this.scheduled=null)}schedule(e){if(!this.current(e))return;this.cancelFrame();const t=requestAnimationFrame(()=>{if(this.scheduled===t&&this.current(e)){this.scheduled=null;try{this.render()}catch(i){this.stop(),this.report(i)}}});this.scheduled=t,this.host.rafId=t}render(){const e=this.host.asyncId,t=()=>this.current(e);if(!t()||!this.host.audioClock)return;const i=this.host.audioClock.currentTime,r=Date.now();if(r-this.host.lastTimeUpdate>=this.host.timeupdateInterval){if(this.host.events.emit("timeupdate"),!t())return;this.host.lastTimeUpdate=r}if(this.ready()){if(Number.isFinite(this.host.duration)&&i>=this.host.duration){this.stop(),this.host.stalled=!1;const e=this.host.asyncId;return void vc(this.host.events,()=>!this.closed&&this.host.asyncId===e,["ended","pause","canplay"])}if(this.host.nextFrame&&this.host.nextFrame.timestamp<=i){if(this.draw(this.host.nextFrame),this.host.nextFrame=null,this.request(e),this.host.stalled){if(vc(this.host.events,t,["canplay","playing"]),!t())return;this.host.stalled=!1}}else this.host.nextFrame||(this.request(e),Number.isFinite(this.host.duration)&&i!S(this,o),e=>I(this,d,g).call(this,e,!0),e=>I(this,d,m).call(this,e)))}async preflight(e,t,i){return async function(e,t,i,r,a=()=>!0){if(r?.aborted||!a())return!1;if(!t||"string"!==typeof e||wc(e))return!0;try{const t=await fetch(e,r?{method:"HEAD",signal:r}:{method:"HEAD"});if(r?.aborted||!a())return!1;const s=t.headers.get("accept-ranges");return!(!s||"none"===s)||(i.emit("error",new Event("RangeNotSupported")),!1)}catch(s){return!(r?.aborted||!a())&&(console.warn("Preflight check failed:",s),!0)}}(e,this.preflightRange,this.events,t,i)}drawPoster(){if(S(this,n)||!this.poster||this.posterDrawn)return;const e=S(this,t);S(this,c).draw(this.poster,()=>I(this,d,h).call(this,e),e=>{this.clear(),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,I(this,d,f).call(this).drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e=>I(this,d,m).call(this,e))}async stopIterator(){const e=this.videoIterator;this.videoIterator=null,this.nextFrame=null,await function(e){if(!e)return Promise.resolve();const t=Cc.get(e);if(t)return t;const i=Promise.resolve().then(()=>e.return()).then(()=>{});return Cc.set(e,i),i}(e)}clear(){I(this,d,f).call(this).clearRect(0,0,this.canvas.width,this.canvas.height)}cancelPending(){x(this,t)._++,x(this,i)._++,this.stop(),I(this,d,p).call(this),S(this,c).cancel(),P(this,o,!1),P(this,r,null),P(this,a,null),P(this,s,null),this.videoSink=null,this.input=null}async load(e,a){if(S(this,n))return;this.cancelPending();const s=S(this,t),c=S(this,i);P(this,o,!0);const l=Promise.resolve().then(()=>I(this,d,k).call(this,e,s,c,a));P(this,r,l);try{await l}finally{S(this,r)===l&&P(this,r,null)}}handleNoVideoTrack(){S(this,n)||(this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster())}async resetIterator(e){if(S(this,n))return;const a=S(this,t),s=++x(this,i)._,l=S(this,r);this.stop(),S(this,c).cancel(),P(this,o,!0);try{l&&await l,await I(this,d,y).call(this,e,a,s)}catch(u){if(I(this,d,h).call(this,a)&&S(this,i)===s)throw I(this,d,p).call(this),u}finally{I(this,d,h).call(this,a)&&S(this,i)===s&&P(this,o,!1)}}async updateNextFrame(e){await S(this,l).update(e)}render(){S(this,l).render()}start(e){S(this,l).start(e)}stop(){S(this,l).stop()}async seek(e){await this.resetIterator(e)}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){S(this,n)||(P(this,n,!0),x(this,t)._++,S(this,l).destroy(),S(this,c).cancel(),I(this,d,p).call(this),this.posterDrawn=!1,P(this,a,null),P(this,s,null),this.videoSink=null,this.input=null,this.audioClock=null)}}t=new WeakMap,i=new WeakMap,r=new WeakMap,a=new WeakMap,s=new WeakMap,n=new WeakMap,o=new WeakMap,c=new WeakMap,l=new WeakMap,u=new WeakMap,d=new WeakSet,h=function(e){return!S(this,n)&&S(this,t)===e},f=function(){if(!this.ctx)throw new Error("Canvas 2D context is unavailable.");return this.ctx},m=function(e){S(this,n)||(I(this,d,p).call(this),S(this,u)?S(this,u).call(this,e):this.events.emit("error",e))},p=function(){this.stopIterator().catch(e=>console.warn("MediaBunny iterator cleanup error:",e))},g=function(e,t){S(this,c).cancel(),t&&this.clear(),I(this,d,f).call(this).drawImage(e.canvas,0,0)},k=async function(e,t,r,s){if(I(this,d,h).call(this,t))try{this.clear(),this.posterDrawn=!1;const{input:i,videoTrack:n,duration:o}=e;if(this.input=i,this.duration=o,!n)return this.handleNoVideoTrack(),void s?.();const c=null!==n.codec&&await n.canDecode();if(!I(this,d,h).call(this,t))return;if(!c)return this.handleNoVideoTrack(),void s?.();const l=await n.canBeTransparent();if(!I(this,d,h).call(this,t))return;P(this,a,()=>new go(n,{poolSize:2,fit:"contain",alpha:l})),this.videoSink=S(this,a).call(this),this.width=n.displayWidth,this.height=n.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,s?.(),I(this,d,h).call(this,t)&&await I(this,d,y).call(this,0,t,r)}catch(n){if(I(this,d,h).call(this,t))throw I(this,d,p).call(this),n}finally{I(this,d,h).call(this,t)&&S(this,i)===r&&P(this,o,!1)}},y=async function(e,t,r){if(!I(this,d,h).call(this,t)||S(this,i)!==r)return;I(this,d,p).call(this),S(this,a)&&this.videoSink===S(this,s)&&(this.videoSink=S(this,a).call(this));const n=this.videoSink;if(!n||!I(this,d,h).call(this,t))return;P(this,s,n);const o=n.canvases(e);this.videoIterator=o;const c=()=>I(this,d,h).call(this,t)&&S(this,i)===r&&this.videoIterator===o,l=await Ec(o);if(!c())return;const u=await Ec(o);c()&&(this.nextFrame=u,l?I(this,d,g).call(this,l,!1):this.drawPoster())};class Dc{constructor({canvas:e,ctx:t,events:i,option:r={}}){v(this,b),this.events=i,this.option=r,this.audio=new kc(i),this.video=new Ac({canvas:e,ctx:t,events:i,timeupdateInterval:r.timeupdateInterval??250,avSyncTolerance:r.avSyncTolerance??.12,dropLateFrames:r.dropLateFrames??!1,poster:r.poster??"",preflightRange:r.preflightRange??!1,onError:e=>{try{this.pause()}catch(t){console.warn("MediaBunny video failure cleanup:",t)}this.reportError(e)}}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,this.input=null,this.media=null,this.loadSession=null,this.destroyed=!1,P(this,b,new xc(this)),i.addEventListener("ended",()=>{this.destroyed||(this.ended=!0,this.paused=!0,S(this,b).ended())})}async load(e){if(this.destroyed)return;const t=++this.loadSeq;if(S(this,b).invalidate(),this.video.cancelPending(),this.loadSession?.cancel(),t!==this.loadSeq||this.destroyed)return;if(this.pause(),t!==this.loadSeq||this.destroyed)return;this.disposeInput();const i=new Sc;this.loadSession=i,this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,i.defer(()=>this.events.emit("waiting")),i.defer(()=>this.events.emit("loadstart"));const r=Number.isFinite(this.option.loadTimeout)?this.option.loadTimeout??0:0;try{await i.wait(this.performLoad(e,t,i),r)}catch(a){if(t!==this.loadSeq)return;const e=++this.loadSeq;if(S(this,b).invalidate(),this.video.cancelPending(),i.cancel(),e!==this.loadSeq||this.destroyed)return;this.disposeInput(),this.reportError(a)}}async performLoad(e,t,i=this.loadSession){const r=()=>!this.destroyed&&t===this.loadSeq;if(!i||!(await this.video.preflight(e,i.signal,r))||!r())return;const a=Tc(e);if(!a)return this.video.handleNoVideoTrack(),void(r()&&this.audio.handleNoAudioTrack());i.own(a);const s=await async function(e,t){const i=await e.getPrimaryVideoTrack(),r=i?await i.getPrimaryPairableAudioTrack():await e.getPrimaryAudioTrack(),a=await Pc({input:e,videoTrack:i,audioTrack:r}),s=i||r,n=wc(t);return{input:e,videoTrack:i,audioTrack:r,duration:a,isLive:!Number.isFinite(a)&&Boolean(s&&await s.isLive()),isHls:n,videoMode:n?"auto":"manual",audioMode:n?"auto":"manual"}}(a,e);if(!r())return;if(!s.videoTrack&&!s.audioTrack)throw this.video.handleNoVideoTrack(),this.video.duration=Number.NaN,this.audio.duration=Number.NaN,new Error("Input has no audio or video tracks.");this.input=a,this.media=s;const n=function(e,t){let i=!1,r=!1,a=!1;function s(s){t()&&!a&&("video"===s?i=!0:r=!0,i&&r&&(a=!0,e()))}return{video:()=>s("video"),audio:()=>s("audio")}}(()=>{this.readyState=1,vc(this.events,r,["loadedmetadata","durationchange","progress"])},r);try{const e=this.video.load(s,n.video),t=r()?this.audio.load(s,n.audio):Promise.resolve();if(await Promise.all([e,t]),!r())return;this.readyState=4,this.networkState=1,vc(this.events,r,["loadeddata","canplay","canplaythrough","progress"])}catch(o){if(!r())return;throw console.error("MediaBunny load error:",o),o}}createTimeout(e){return new Promise((t,i)=>{setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){this.loadSession?.disposeInput(),this.input=null,this.media=null}async replaceTracks(e){if(this.media&&!this.destroyed)return S(this,b).replace({...this.media,...e},this.currentTime)}async selectHlsQuality(e){return async function(e,t){const{input:i,media:r,loadSeq:a}=e;if(!r?.isHls||!i||e.destroyed)return;const s=()=>!e.destroyed&&e.loadSeq===a&&e.input===i&&e.media===r;let n;try{const e=await i.getVideoTracks();if(!s())return;const a="auto"===t?await i.getPrimaryVideoTrack():e.find(e=>e.id===t)??r.videoTrack;if(!s()||!a)return;let o=r.audioTrack,c=r.audioMode;o&&a.canBePairedWith(o)||(o=await a.getPrimaryPairableAudioTrack(),c="auto"),n={videoTrack:a,audioTrack:o,videoMode:"auto"===t?"auto":"manual",audioMode:c}}catch(o){if(!s())return;throw o}s()&&await e.replaceTracks(n)}(this,e)}async selectHlsAudio(e){return async function(e,t){const{input:i,media:r,loadSeq:a}=e;if(!r?.isHls||!i||e.destroyed)return;const s=()=>!e.destroyed&&e.loadSeq===a&&e.input===i&&e.media===r;let n;try{const e=await i.getAudioTracks();if(!s())return;const a="auto"===t?r.videoTrack?await r.videoTrack.getPrimaryPairableAudioTrack():await i.getPrimaryAudioTrack():e.find(e=>e.id===t)??r.audioTrack;if(!s()||!a)return;let o=r.videoTrack,c=r.videoMode;o&&a.canBePairedWith(o)||(o=await a.getPrimaryPairableVideoTrack(),c="auto"),n={videoTrack:o,audioTrack:a,videoMode:c,audioMode:"auto"===t?"auto":"manual"}}catch(o){if(!s())return;throw o}s()&&await e.replaceTracks(n)}(this,e)}async getHlsState(){const e=this.media;if(this.destroyed)return null;try{const t=await async function(e){if(!e?.isHls||!e.input)return null;const[t,i]=await Promise.all([e.input.getVideoTracks(),e.videoTrack?e.videoTrack.getPairableAudioTracks():[]]),[r,a]=await Promise.all([Promise.all(t.map(async(e,t)=>({id:e.id,track:e,index:t,name:await e.getName(),height:await e.getDisplayHeight(),bitrate:await yc(e)}))),Promise.all(i.map(async(e,t)=>{const i=await e.getName(),r=await e.getLanguageCode();return{id:e.id,track:e,index:t,name:i,lang:r,language:r,bitrate:await yc(e)}}))]);return{levels:r,audios:a,currentLevel:e.videoTrack?r.find(t=>t.id===e.videoTrack?.id)??null:null,currentAudio:e.audioTrack?a.find(t=>t.id===e.audioTrack?.id)??null:null,videoMode:e.videoMode??"auto",audioMode:e.audioMode??"auto"}}(e);return this.destroyed||this.media!==e?null:t}catch(t){if(this.destroyed||this.media!==e)return null;throw t}}async play(){return S(this,b).play()}pause(){S(this,b).pause()}async seek(e){return S(this,b).seek(e)}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}reportError(e){if(this.destroyed)return;const t=e&&"object"===typeof e?Reflect.get(e,"message"):void 0;this.error={code:4,message:"string"===typeof t?t:String(e)},this.networkState=3,this.events.emit("error")}destroy(){if(this.destroyed)return;this.destroyed=!0,this.loadSeq++,S(this,b).invalidate();const e=[];for(const i of[()=>this.loadSession?.cancel(),()=>this.pause(),()=>this.disposeInput(),()=>this.audio.destroy(),()=>this.video.destroy()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}get currentTime(){return this.audio.currentTime}get duration(){return this.media?.duration??this.audio.duration??this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}b=new WeakMap;const Mc=new WeakMap;function Nc(e){let t=Mc.get(e);return t||(t={closed:!1,frames:new Set},Mc.set(e,t)),t}class Oc{constructor({art:e,canvas:t,ctx:i,option:r}){this.art=e,this.canvas=t,this.option=r,this.events=new B,this.engine=new Dc({canvas:t,ctx:i,events:this.events,option:r}),this._src=null,this._volume=r.volume??.7,this._muted=!!r.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),r.source?this.src=r.source:e.option?.url&&(this.src=e.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){Promise.resolve(this.engine.seek(Number(e)||0)).catch(()=>{})}get duration(){return this.engine.duration}get buffered(){return this.createTimeRanges(0,this.engine.duration)}get played(){return this.createTimeRanges(0,this.engine.currentTime)}get seekable(){return this.createTimeRanges(0,this.engine.duration)}createTimeRanges(e,t){return function(e,t,i){return!e||Number.isNaN(e)||i<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>t,end:()=>i}}(this.engine.duration,e,t)}get paused(){return this.engine.paused}get playing(){return!this.engine.paused&&!this.engine.ended}get ended(){return this.engine.ended}get seeking(){return this.engine.seeking}get readyState(){return this.engine.readyState}get networkState(){return this.engine.networkState}get error(){return this.engine.error}get playbackRate(){return this._playbackRate}set playbackRate(e){const t=Number(e);Number.isNaN(t)||t<=0||(this._playbackRate=t,this.engine.setPlaybackRate(t),this.events.emit("ratechange"))}get volume(){return this._volume}set volume(e){var t;this._volume=(t=e,Math.max(0,Math.min(1,Number(t)||0))),this._muted=!1,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}get muted(){return this._muted}set muted(e){this._muted=!!e,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}play(){return this.engine.play()}pause(){this.engine.pause()}load(){this._src&&this.engine.load(this._src)}getM3u8State(){return this.engine.getHlsState()}switchM3u8Quality(e){return this.engine.selectHlsQuality(e)}switchM3u8Audio(e){return this.engine.selectHlsAudio(e)}get videoWidth(){return this.engine.videoWidth}get videoHeight(){return this.engine.videoHeight}get poster(){return this.option.poster||""}set poster(e){this.option.poster=e}get autoplay(){return this.option.autoplay||!1}set autoplay(e){}get loop(){return this.option.loop||!1}set loop(e){}get controls(){return!1}set controls(e){}get playsInline(){return!0}set playsInline(e){}get crossOrigin(){return this.option.crossOrigin||""}set crossOrigin(e){}get preload(){return"auto"}set preload(e){}get defaultMuted(){return!1}set defaultMuted(e){}get defaultPlaybackRate(){return 1}set defaultPlaybackRate(e){}canPlayType(e){return"maybe"}getBoundingClientRect(){return this.canvas.getBoundingClientRect()}requestVideoFrameCallback(e){return function(e,t){const i=Nc(e);if(i.closed)return 0;const r=requestAnimationFrame(a=>{i.frames.delete(r),i.closed||t(a,{presentationTime:e.engine.currentTime,expectedDisplayTime:a+16.6,width:e.engine.videoWidth,height:e.engine.videoHeight,mediaTime:e.engine.currentTime,presentedFrames:0,processingDuration:0,captureTime:a,receiveTime:a,rtpTimestamp:0})});return i.frames.add(r),r}(this,e)}cancelVideoFrameCallback(e){!function(e,t){Nc(e).frames.delete(t),cancelAnimationFrame(t)}(this,e)}setAttribute(e,t){"src"===e?this.src=t:"autoplay"===e?this.autoplay=t:"loop"===e?this.loop=t:"muted"===e?this.muted=!0:Reflect.apply(this.canvas.setAttribute,this.canvas,[e,t])}destroy(){if(function(e){const t=Nc(e);if(t.closed)return!1;t.closed=!0;for(const i of t.frames)cancelAnimationFrame(i);return t.frames.clear(),!0}(this))try{this.engine.destroy()}finally{this.events.destroy()}}}return function(e={}){return t=>{const{constructor:i}=t,{createElement:r}=i.utils,a=r("canvas"),s=a.getContext("2d"),n=new Oc({art:t,canvas:a,ctx:s,option:e});t.mediabunny=n;const o={};for(const e in a)"function"===typeof a[e]&&(o[e]=a[e].bind(a));const c=new Set([...Object.getOwnPropertyNames(n),...Object.getOwnPropertyNames(Object.getPrototypeOf(n))]);for(const e of c)"constructor"!==e&&(e in a||Object.defineProperty(a,e,{get(){const t=n[e];return"function"===typeof t?t.bind(n):t},set(t){n[e]=t},configurable:!0,enumerable:!0}));for(const e in o)a[e]=(...t)=>o[e](...t);function l(){const e=t.template?.$player;e&&!t.option.autoSize&&Object.assign(a.style,{width:"100%",height:"100%",objectFit:"contain"})}return t.on("resize",l),t.on("video:loadedmetadata",l),function({art:e,shim:t,option:i}){if(i.m3u8)return e.on("video:loadedmetadata",u),e.on("restart",u),{update:u};function r(t){e.controls.cache.has(t)&&e.controls.remove(t)}function a(t){e.setting.find(t)&&e.setting.remove(t)}function s(){r("mediabunny-quality"),a("mediabunny-quality")}function n(){r("mediabunny-audio"),a("mediabunny-audio")}function o(e={}){return e.control||e.setting}async function c(r){const a=i.m3u8?.quality||{};if(!o(a)||!r?.levels.length)return void s();const n=a.auto||"Auto",c=a.title||"Quality",l=a.getName||(e=>e.name||`${e.height}P`),d=r.currentLevel?l(r.currentLevel):n,h=C(r.levels.map(e=>({html:l(e),value:e.id,default:r.currentLevel?.id===e.id})),"html").sort((e,t)=>{const i=r.levels.find(t=>t.id===e.value),a=r.levels.find(e=>e.id===t.value);return(a?.height||0)-(i?.height||0)});h.push({html:n,value:"auto",default:!r.currentLevel});const f=async i=>(await t.switchM3u8Quality(i.value),e.notice.show=`${c}: ${i.html}`,await u(),i.html);a.control&&e.controls.update({name:"mediabunny-quality",position:"right",html:d,style:{padding:"0 10px"},selector:h,onSelect:f}),a.setting&&e.setting.update({name:"mediabunny-quality",tooltip:d,html:c,icon:'',width:200,selector:h,onSelect:f})}async function l(r){const a=i.m3u8?.audio||{};if(!o(a)||!r?.audios.length||r.audios.length<2)return void n();const s=a.auto||"Auto",c=a.title||"Audio",l=a.getName||(e=>e.name||e.lang||e.language),d=r.currentAudio?l(r.currentAudio):s,h=C(r.audios.map(e=>({html:l(e),value:e.id,default:r.currentAudio?.id===e.id})),"html");h.push({html:s,value:"auto",default:!r.currentAudio});const f=async i=>(await t.switchM3u8Audio(i.value),e.notice.show=`${c}: ${i.html}`,await u(),i.html);a.control&&e.controls.update({name:"mediabunny-audio",position:"right",html:d,style:{padding:"0 10px"},selector:h,onSelect:f}),a.setting&&e.setting.update({name:"mediabunny-audio",tooltip:d,html:c,icon:'',width:200,selector:h,onSelect:f})}async function u(){const e=await t.getM3u8State();if(!e)return s(),void n();await Promise.all([c(e),l(e)])}}({art:t,shim:n,option:e}),t.on("destroy",()=>{delete t.mediabunny,n.destroy()}),a}}}); diff --git a/packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.legacy.js b/packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.legacy.js index 3968b5b32..b8aed882d 100644 --- a/packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.legacy.js +++ b/packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.legacy.js @@ -4,4 +4,4 @@ * (c) 2017-2026 Harvey Zhao * Released under the MIT License. */ -!function(e,t){"object"===typeof exports&&"undefined"!==typeof module?module.exports=t():"function"==typeof define&&define.amd?(e.artplayerProxyMediabunny=t(),define(function(){return e.artplayerProxyMediabunny})):(e="undefined"!==typeof globalThis?globalThis:e||self).artplayerProxyMediabunny=t()}(this,function(){"use strict";var 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Ke(t);null===e.bitstreamRestrictionFlag?(r.copyBits(e.vuiParametersFlagBitOffset,i),r.writeBits(1,1),r.writeBits(1,0),r.writeBits(1,0),r.writeBits(1,0),r.writeBits(1,0),r.writeBits(1,0),r.writeBits(1,0),r.writeBits(1,0),r.writeBits(1,0)):(I(null!==e.bitstreamRestrictionFlagBitOffset),r.copyBits(e.bitstreamRestrictionFlagBitOffset,i)),r.writeBits(1,1),r.writeBits(1,1),E(r,2),E(r,1),E(r,16),E(r,16),E(r,e.numReorderFrames),E(r,e.maxDecFrameBuffering),r.writeBits(1,1),r.writeBits((8-r.pos%8)%8,0);const n=r.pos/8;return I(Number.isInteger(n)),(e=>{const t=[];let i=0;for(const r of e)2===i&&r<=3&&(t.push(3),i=0),t.push(r),i=0===r?i+1:0;return new Uint8Array(t)})(t.subarray(0,n))},bt=(e,t)=>{if(t.description){const i=3&R(t.description)[21];return st(e,i+1)}return nt(e)},Tt=e=>e>>1&63,vt=e=>{try{const t=new Ke(lt(e));t.skipBits(16),t.readBits(4);const 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s=e.subarray(l.offset,l.offset+l.length),a=Tt(s[0]);a===it.VPS_NUT?t.push(s):a===it.SPS_NUT?i.push(s):a===it.PPS_NUT?r.push(s):a!==it.PREFIX_SEI_NUT&&a!==it.SUFFIX_SEI_NUT||n.push(s)}if(0===i.length||0===r.length)return null;const s=vt(i[0]);if(!s)return null;let a=0;if(r.length>0){const e=r[0],t=new Ke(lt(e));t.skipBits(16),B(t),B(t),t.skipBits(1),t.skipBits(1),t.skipBits(3),t.skipBits(1),t.skipBits(1),B(t),B(t),_(t),t.skipBits(1),t.skipBits(1),t.readBits(1)&&B(t),_(t),_(t),t.skipBits(1),t.skipBits(1),t.skipBits(1),t.skipBits(1);const i=t.readBits(1),n=t.readBits(1);a=i||n?i&&!n?2:!i&&n?3:0:0}const o=[...t.length?[{arrayCompleteness:1,nalUnitType:it.VPS_NUT,nalUnits:t}]:[],...i.length?[{arrayCompleteness:1,nalUnitType:it.SPS_NUT,nalUnits:i}]:[],...r.length?[{arrayCompleteness:1,nalUnitType:it.PPS_NUT,nalUnits:r}]:[],...n.length?[{arrayCompleteness:1,nalUnitType:Tt(n[0][0]),nalUnits:n}]:[]];return{configurationVersion:1,generalProfileSpace:s.generalProfileSpace,generalTierFlag:s.generalTierFlag,generalProfileIdc:s.generalProfileIdc,generalProfileCompatibilityFlags:s.generalProfileCompatibilityFlags,generalConstraintIndicatorFlags:s.generalConstraintIndicatorFlags,generalLevelIdc:s.generalLevelIdc,minSpatialSegmentationIdc:s.minSpatialSegmentationIdc,parallelismType:a,chromaFormatIdc:s.chromaFormatIdc,bitDepthLumaMinus8:s.bitDepthLumaMinus8,bitDepthChromaMinus8:s.bitDepthChromaMinus8,avgFrameRate:0,constantFrameRate:0,numTemporalLayers:s.spsMaxSubLayersMinus1+1,temporalIdNested:s.spsTemporalIdNestingFlag,lengthSizeMinusOne:3,arrays:o}}catch(t){return We._error("Error building HEVC 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e.readBits(1)&&e.readBits(1),e.readBits(1)&&(e.readBits(3),s=e.readBits(1),e.readBits(1)&&(i=e.readBits(8),r=e.readBits(8),n=e.readBits(8))),e.readBits(1)&&(B(e),B(e)),e.readBits(1),e.readBits(1),e.readBits(1),e.readBits(1)&&(B(e),B(e),B(e),B(e)),e.readBits(1)&&(e.readBits(32),e.readBits(32),e.readBits(1)&&B(e),e.readBits(1)&&Bt(e,!0,t)),e.readBits(1)&&(e.readBits(1),e.readBits(1),e.readBits(1),a=B(e),B(e),B(e),B(e),B(e)),{pixelAspectRatio:o,colourPrimaries:i,transferCharacteristics:r,matrixCoefficients:n,fullRangeFlag:s,minSpatialSegmentationIdc:a}},Bt=(e,t,i)=>{let r=!1,n=!1,s=!1;r=1===e.readBits(1),n=1===e.readBits(1),(r||n)&&(s=1===e.readBits(1),s&&(e.readBits(8),e.readBits(5),e.readBits(1),e.readBits(5)),e.readBits(4),e.readBits(4),s&&e.readBits(4),e.readBits(5),e.readBits(5),e.readBits(5));for(let a=0;a<=i;a++){let t=!0;1===e.readBits(1)||(t=1===e.readBits(1));let i=!1;t?B(e):i=1===e.readBits(1);let a=1;if(!i){a=B(e)+1}r&&Et(e,a,s),n&&Et(e,a,s)}},Et=(e,t,i)=>{for(let r=0;r{const 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ut(e)})(n,t)},At={1:{colourPrimaries:5,transferCharacteristics:6,matrixCoefficients:5},2:{colourPrimaries:1,transferCharacteristics:1,matrixCoefficients:1},3:{colourPrimaries:6,transferCharacteristics:6,matrixCoefficients:6},4:{colourPrimaries:7,transferCharacteristics:7,matrixCoefficients:7},5:{colourPrimaries:9,transferCharacteristics:14,matrixCoefficients:9},7:{colourPrimaries:1,transferCharacteristics:13,matrixCoefficients:0}},Dt=e=>{var t,i,r;const n=new Ke(e);if(2!==n.readBits(2))return null;const s=n.readBits(1),a=(n.readBits(1)<<1)+s;3===a&&n.skipBits(1);if(1===n.readBits(1))return null;if(0!==n.readBits(1))return null;n.skipBits(2);if(4817730!==n.readBits(24))return null;let o=8;if(a>=2){o=n.readBits(1)?12:10}const l=n.readBits(3);let c=0,u=0;if(7!==l){if(u=n.readBits(1),1===a||3===a){const e=n.readBits(1),t=n.readBits(1);c=e||t?e&&!t?2:1:3,n.skipBits(1)}else c=1}else c=3,u=1;const d=(n.readBits(16)+1)*(n.readBits(16)+1);let h=C(mi).level;for(const m of mi)if(d<=m.maxPictureSize){h=m.level;break}const f=At[l];return{profile:a,level:h,bitDepth:o,chromaSubsampling:c,videoFullRangeFlag:u,colourPrimaries:null!=(t=null==f?void 0:f.colourPrimaries)?t:2,transferCharacteristics:null!=(i=null==f?void 0:f.transferCharacteristics)?i:2,matrixCoefficients:null!=(r=null==f?void 0:f.matrixCoefficients)?r:2}},Mt=function*(e){const t=new Ke(e),i=()=>{let e=0;for(let i=0;i<8;i++){const r=t.readAlignedByte();if(e+=(127&r)*u(2,7*i),!(128&r))break;if(7===i&&128&r)return null}return e>u(2,32)-1?null:e};for(;t.getBitsLeft()>=8;){t.skipBits(1);const r=t.readBits(4),n=t.readBits(1),s=t.readBits(1);let a;if(t.skipBits(1),n&&t.skipBits(8),s){const e=i();if(null===e)return;a=e}else a=Math.floor(t.getBitsLeft()/8);I(t.pos%8===0),yield{type:r,data:e.subarray(t.pos/8,t.pos/8+a)},t.skipBits(8*a)}},Nt=e=>{for(const{type:t,data:i}of Mt(e)){if(1!==t)continue;const e=new Ke(i),r=e.readBits(3);e.readBits(1);const n=e.readBits(1);let s=0,a=0,o=0;if(n)s=e.readBits(5);else{let t=0;if(e.readBits(1)){e.skipBits(32),e.skipBits(32);if(e.readBits(1)){let t=0;for(;t<32&&!e.readBits(1);)t++;t<32&&e.skipBits(t)}t=e.readBits(1),t&&(o=e.readBits(5),e.skipBits(32),e.skipBits(5),e.skipBits(5))}const i=e.readBits(1),r=e.readBits(5);for(let n=0;n<=r;n++){e.skipBits(12);const r=e.readBits(5);if(0===n&&(s=r),r>7){const t=e.readBits(1);0===n&&(a=t)}if(t){if(e.readBits(1)){const t=o+1;e.skipBits(t),e.skipBits(t),e.skipBits(1)}}if(i){e.readBits(1)&&e.skipBits(4)}}}const l=e.readBits(4),c=e.readBits(4),u=l+1;e.skipBits(u);const d=c+1;e.skipBits(d);let h=0;if(h=n?0:e.readBits(1),h&&(e.skipBits(4),e.skipBits(3)),e.skipBits(1),e.skipBits(1),e.skipBits(1),!n){e.skipBits(1),e.skipBits(1),e.skipBits(1),e.skipBits(1);const t=e.readBits(1);t&&(e.skipBits(1),e.skipBits(1));let i=0;if(i=e.readBits(1)?2:e.readBits(1),i>0){e.readBits(1)||e.skipBits(1)}t&&e.skipBits(3)}e.skipBits(1),e.skipBits(1),e.skipBits(1);const f=e.readBits(1);let m=8;if(2===r&&f){m=e.readBits(1)?12:10}else r<=2&&(m=f?10:8);let p=0;1!==r&&(p=e.readBits(1));let g=2,k=2,y=2;e.readBits(1)&&(g=e.readBits(8),k=e.readBits(8),y=e.readBits(8));let b=0,T=1,v=1,S=0;return p?b=e.readBits(1):1===g&&13===k&&0===y?(b=1,T=0,v=0):(b=e.readBits(1),0===r?(T=1,v=1):1===r?(T=0,v=0):12===m?(T=e.readBits(1),v=T?e.readBits(1):0):(T=1,v=0),T&&v&&(S=e.readBits(2))),{profile:r,level:s,tier:a,bitDepth:m,monochrome:p,chromaSubsamplingX:T,chromaSubsamplingY:v,chromaSamplePosition:S,videoFullRangeFlag:b,colourPrimaries:g,transferCharacteristics:k,matrixCoefficients:y}}return null},Ot=e=>{if(e.length<36)return null;const t=F(e);if(1768124518!==t.getUint32(4))return null;return t.getUint16(8)<28?null:{fullRange:!1,colourPrimaries:t.getUint8(22),transferCharacteristics:t.getUint8(23),matrixCoefficients:t.getUint8(24)}},Lt=[480,960,1920,2880,480,960,1920,2880,480,960,1920,2880,480,960,480,960,120,240,480,960,120,240,480,960,120,240,480,960,120,240,480,960],zt=e=>{if(e.length<7)throw new Error("Setup header is too short.");if(5!==e[0])throw new Error("Wrong packet type in Setup header.");if("vorbis"!==String.fromCharCode(...e.slice(1,7)))throw new Error("Invalid packet signature in Setup header.");const t=e.length,i=new Uint8Array(t);for(let u=0;u97;)if(1===r.readBits(1)){n=r.pos;break}if(0===n)throw new Error("Invalid Setup header: framing bit not found.");let s=0,a=!1,o=0;for(;r.getBitsLeft()>=97;){const e=r.pos,t=r.readBits(8),i=r.readBits(16),n=r.readBits(16);if(t>63||0!==i||0!==n){r.pos=e;break}if(r.skipBits(1),s++,s>64)break;r.clone().readBits(6)+1===s&&(a=!0,o=s)}if(!a)throw new Error("Invalid Setup header: mode header not found.");if(o>63)throw new Error(`Unsupported mode count: ${o}.`);const l=o;r.pos=0,r.skipBits(n);const c=Array(l).fill(0);for(let u=l-1;u>=0;u--)r.skipBits(40),c[u]=r.readBits(1);return{modeBlockflags:c}},Ut=(e,t,i)=>{switch(e){case"avc":for(const e of at(i,t)){const t=i[e.offset],r=ot(t);if(r>=et.NON_IDR_SLICE&&r<=et.SLICE_DPC)return"delta";if(r===et.IDR)return"key";if(r===et.SEI&&!Pe()){const t=i.subarray(e.offset,e.offset+e.length),r=lt(t);let n=1;do{let e=0;for(;;){const t=r[n++];if(void 0===t)break;if(e+=t,t<255)break}let t=0;for(;;){const e=r[n++];if(void 0===e)break;if(t+=e,e<255)break}if(e===6){const e=new Ke(r);e.pos=8*n;const t=B(e),i=e.readBits(1);if(0===t&&1===i)return"key"}n+=t}while(n{var i,r;const n=F(e);let s=0;const a=n.getUint32(s,!0);s+=4;const o=A.decode(e.subarray(s,s+a));s+=a,a>0&&(null!=t.raw||(t.raw={}),null!=(i=t.raw).vendor||(i.vendor=o));const l=n.getUint32(s,!0);s+=4;for(let c=0;c0&&(null!=t.trackNumber||(t.trackNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=t.tracksTotal||(t.tracksTotal=r))}break;case"TRACKTOTAL":{const e=Number.parseInt(c,10);Number.isInteger(e)&&e>0&&(null!=t.tracksTotal||(t.tracksTotal=e))}break;case"DISCNUMBER":{const e=c.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=t.discNumber||(t.discNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=t.discsTotal||(t.discsTotal=r))}break;case"DISCTOTAL":{const e=Number.parseInt(c,10);Number.isInteger(e)&&e>0&&(null!=t.discsTotal||(t.discsTotal=e))}break;case"DATE":{const e=new Date(c);Number.isNaN(e.getTime())||null!=t.date||(t.date=e)}break;case"GENRE":null!=t.genre||(t.genre=c);break;case"METADATA_BLOCK_PICTURE":{const e=_e(c),i=F(e),r=i.getUint32(0,!1),n=i.getUint32(4,!1),s=String.fromCharCode(...e.subarray(8,8+n)),a=i.getUint32(8+n,!1),o=A.decode(e.subarray(12+n,12+n+a)),l=i.getUint32(n+a+28),u=e.subarray(n+a+32,n+a+32+l);null!=t.images||(t.images=[]),t.images.push({data:u,mimeType:s,kind:3===r?"coverFront":4===r?"coverBack":"unknown",name:void 0,description:o||void 0})}}}},Vt=[2,1,2,3,3,4,4,5],jt=e=>{if(e.length<7)return null;if(11!==e[0]||119!==e[1])return null;const t=new Ke(e);t.skipBits(16),t.skipBits(16);const i=t.readBits(2);if(3===i)return null;const r=t.readBits(6),n=t.readBits(5);if(n>8)return null;const 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non-negative integer.");this.byteLength=s,this.sideData=null!=a?a:{},this.sideData.alpha&&void 0===this.sideData.alphaByteLength&&(this.sideData.alphaByteLength=this.sideData.alpha.byteLength)}get isMetadataOnly(){return this.data===Oi}get microsecondTimestamp(){return Math.trunc(me*this.timestamp)}get microsecondDuration(){return Math.trunc(me*this.duration)}toEncodedVideoChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("EncodedVideoChunk is not available in this environment.");return new EncodedVideoChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}alphaToEncodedVideoChunk(e=this.type){if(!this.sideData.alpha)throw new TypeError("This packet does not contain alpha side data.");if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if("undefined"===typeof EncodedVideoChunk)throw new Error("EncodedVideoChunk is not available in this environment.");return new EncodedVideoChunk({data:this.sideData.alpha,type:e,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}toEncodedAudioChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to an audio chunk.");if("undefined"===typeof EncodedAudioChunk)throw new Error("EncodedAudioChunk is not available in this environment.");return new EncodedAudioChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}static fromEncodedChunk(e,t){var i;if(!(e instanceof EncodedVideoChunk||e instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedVideoChunk or EncodedAudioChunk.");const r=new Uint8Array(e.byteLength);return e.copyTo(r),new Li(r,e.type,e.timestamp/1e6,(null!=(i=e.duration)?i:0)/1e6,void 0,void 0,t)}clone(e){var t,i,r,n,s,a;if(void 0!==e&&("object"!==typeof e||null===e))throw new TypeError("options, when provided, must be an object.");if(void 0!==(null==e?void 0:e.data)&&!(e.data instanceof Uint8Array))throw new TypeError("options.data, when provided, must be a Uint8Array.");if(void 0!==(null==e?void 0:e.type)&&"key"!==e.type&&"delta"!==e.type)throw new TypeError('options.type, when provided, must be either "key" or "delta".');if(void 0!==(null==e?void 0:e.timestamp)&&!Number.isFinite(e.timestamp))throw new TypeError("options.timestamp, when provided, must be a number.");if(void 0!==(null==e?void 0:e.duration)&&!Number.isFinite(e.duration))throw new TypeError("options.duration, when provided, must be a number.");if(void 0!==(null==e?void 0:e.sequenceNumber)&&!Number.isFinite(e.sequenceNumber))throw new TypeError("options.sequenceNumber, when provided, must be a number.");if(void 0!==(null==e?void 0:e.sideData)&&("object"!==typeof e.sideData||null===e.sideData))throw new TypeError("options.sideData, when provided, must be an object.");return new Li(null!=(t=null==e?void 0:e.data)?t:this.data,null!=(i=null==e?void 0:e.type)?i:this.type,null!=(r=null==e?void 0:e.timestamp)?r:this.timestamp,null!=(n=null==e?void 0:e.duration)?n:this.duration,null!=(s=null==e?void 0:e.sequenceNumber)?s:this.sequenceNumber,this.byteLength,null!=(a=null==e?void 0:e.sideData)?a:this.sideData)}}const zi=e=>{const t=F(e);let i=0;const r=t.getUint8(i);i+=1,i+=3;const n=K(e.subarray(i,i+16));i+=16;let s=null;if(r>0){const r=t.getUint32(i);if(i+=4,r>0){s=[];for(let t=0;te.systemId===t.systemId&&((e,t)=>{if(e.length!==t.length)return!1;for(let i=0;i{let t=jo(e);const i=el(e,4);let r=8;1===t&&(t=Go(e),r=16);const n=t-r;return n<0?null:{name:i,totalSize:t,headerSize:r,contentSize:n}},Wi=e=>Xo(e)/65536,Hi=e=>Xo(e)/1073741824,Vi=e=>{let t=0;for(let i=0;i<4;i++){t<<=7;const i=zo(e);if(t|=127&i,0===(128&i))break}return t},ji=e=>{let t=qo(e);return e.skip(2),t=Math.min(t,e.remainingLength),A.decode(Lo(e,t))},Ki=e=>{const t=qi(e);if(!t||"data"!==t.name)return null;if(e.remainingLength<8)return null;const i=jo(e);e.skip(4);const r=Lo(e,t.contentSize-8);switch(i){case 1:return A.decode(r);case 2:return new TextDecoder("utf-16be").decode(r);case 13:return new He(r,"image/jpeg");case 14:return new He(r,"image/png");case 27:return new He(r,"image/bmp");default:return r}},Xi=16,$i=new Uint32Array(256),Gi=new Uint32Array(256),Qi=new Uint32Array(256),Yi=new Uint32Array(256),Ji=new Uint32Array(256),Zi=new Uint32Array(256),er=new Uint32Array(10);let tr=!1;class ir{constructor(){this.roundkey=new Uint32Array(44),this.iv=new Uint32Array(Xi/Uint32Array.BYTES_PER_ELEMENT),this.in=new Uint8Array(Xi),this.out=new Uint8Array(Xi),this.inView=new DataView(this.in.buffer),this.outView=new DataView(this.out.buffer)}init({key:e,iv:t}){I(16===e.byteLength),I(16===t.byteLength),tr||(()=>{const e=new Uint8Array(256),t=new Uint8Array(256),i=new Uint8Array(256);for(let s=0,a=1;s<256;s++)i[s]=a,t[a]=s,a=a^a<<1^(128&a?283:0);const r=(e,r)=>e&&r?i[(t[e]+t[r])%255]:0;e[0]=99;for(let s=1;s<256;s++){const r=i[255-t[s]];let n=r^r<<1^r<<2^r<<3^r<<4;n=n>>>8^255&n^99,e[s]=n}for(let s=0;s<256;s++){const t=e[s],i=e.indexOf(s);$i[s]=t<<24|t<<16|t<<8|t,Zi[s]=i<<24|i<<16|i<<8|i;const n=r(i,14)<<24|r(i,9)<<16|r(i,13)<<8|r(i,11);Gi[s]=n,Qi[s]=n>>>8|n<<24,Yi[s]=n>>>16|n<<16,Ji[s]=n>>>24|n<<8}let n=1;for(let s=0;s<10;s++)er[s]=n<<24,n=n<<1^(128&n?283:0);tr=!0})();const i=new DataView(e.buffer,e.byteOffset,e.byteLength),r=new DataView(t.buffer,t.byteOffset,t.byteLength);this.roundkey[0]=i.getUint32(0,!1),this.roundkey[1]=i.getUint32(4,!1),this.roundkey[2]=i.getUint32(8,!1),this.roundkey[3]=i.getUint32(12,!1),this.iv[0]=r.getUint32(0,!1),this.iv[1]=r.getUint32(4,!1),this.iv[2]=r.getUint32(8,!1),this.iv[3]=r.getUint32(12,!1);for(let n=4;n<44;n+=4){const e=this.roundkey[n-1];this.roundkey[n]=this.roundkey[n-4]^4278190080&$i[e>>>16&255]^16711680&$i[e>>>8&255]^65280&$i[e>>>0&255]^255&$i[e>>>24&255]^er[n/4-1],this.roundkey[n+1]=this.roundkey[n-3]^this.roundkey[n],this.roundkey[n+2]=this.roundkey[n-2]^this.roundkey[n+1],this.roundkey[n+3]=this.roundkey[n-1]^this.roundkey[n+2]}for(let n=0,s=40;n>>24&255]]^Qi[255&$i[t>>>16&255]]^Yi[255&$i[t>>>8&255]]^Ji[255&$i[t>>>0&255]]}}decrypt(){let e=this.inView.getUint32(0,!1)^this.roundkey[0],t=this.inView.getUint32(4,!1)^this.roundkey[1],i=this.inView.getUint32(8,!1)^this.roundkey[2],r=this.inView.getUint32(12,!1)^this.roundkey[3];const n=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),a=this.inView.getUint32(8,!1),o=this.inView.getUint32(12,!1);let l,c,u,d;for(let g=1;g<10;g++){const n=4*g;l=Gi[e>>>24]^Qi[r>>>16&255]^Yi[i>>>8&255]^Ji[255&t]^this.roundkey[n],c=Gi[t>>>24]^Qi[e>>>16&255]^Yi[r>>>8&255]^Ji[255&i]^this.roundkey[n+1],u=Gi[i>>>24]^Qi[t>>>16&255]^Yi[e>>>8&255]^Ji[255&r]^this.roundkey[n+2],d=Gi[r>>>24]^Qi[i>>>16&255]^Yi[t>>>8&255]^Ji[255&e]^this.roundkey[n+3],e=l,t=c,i=u,r=d}const h=4278190080&Zi[e>>>24&255]^16711680&Zi[r>>>16&255]^65280&Zi[i>>>8&255]^255&Zi[t>>>0&255]^this.roundkey[40],f=4278190080&Zi[t>>>24&255]^16711680&Zi[e>>>16&255]^65280&Zi[r>>>8&255]^255&Zi[i>>>0&255]^this.roundkey[41],m=4278190080&Zi[i>>>24&255]^16711680&Zi[t>>>16&255]^65280&Zi[e>>>8&255]^255&Zi[r>>>0&255]^this.roundkey[42],p=4278190080&Zi[r>>>24&255]^16711680&Zi[i>>>16&255]^65280&Zi[t>>>8&255]^255&Zi[e>>>0&255]^this.roundkey[43];this.outView.setUint32(0,h^this.iv[0],!1),this.outView.setUint32(4,f^this.iv[1],!1),this.outView.setUint32(8,m^this.iv[2],!1),this.outView.setUint32(12,p^this.iv[3],!1),this.iv[0]=n,this.iv[1]=s,this.iv[2]=a,this.iv[3]=o}}class rr extends Ni{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.psshBoxes=[],this.currentFragment=null,this.lastReadFragment=null,this.decryptionKeyCache=new Map,this.reader=e._reader}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.tracks.map(e=>e.trackBacking)})}getMimeType(){return y(this,null,function*(){yield this.readMetadata();const e=yield this.getTrackBackings(),t=yield Promise.all(e.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)}),hasAudio:this.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)}),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return y(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){let e=0,t=!1,i=!1;for(;;){let r=this.reader.requestSliceRange(e,8,16);if(Ce(r)&&(r=yield r),!r)break;const n=e,s=qi(r);if(!s)break;if("ftyp"===s.name||"styp"===s.name){const e=el(r,4);this.isQuickTime="qt "===e}else{if("moov"===s.name){let e=this.reader.requestSlice(r.filePos,s.contentSize);if(Ce(e)&&(e=yield e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice);for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}t=this.isFragmented&&null!==this.reader.fileSize&&this.reader.fileSize>n+s.totalSize,i=!0;break}if("moof"===s.name){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');yield this.copyMetadataFromInitInput(this.input._initInput),t=!1,i=!0;break}}e=n+s.totalSize}if(!i&&this.input._initInput&&(yield this.copyMetadataFromInitInput(this.input._initInput)),t){I(null!==this.reader.fileSize);let e=this.reader.requestSlice(this.reader.fileSize-4,4);Ce(e)&&(e=yield e),I(e);const t=jo(e),i=this.reader.fileSize-t;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(Ce(e)&&(e=yield e),e){const t=qi(e);if(t&&"mfra"===t.name){let i=this.reader.requestSlice(e.filePos,t.contentSize);Ce(i)&&(i=yield i),i&&this.readContiguousBoxes(i)}}}}}))()}copyMetadataFromInitInput(e){return y(this,null,function*(){const t=yield e._getDemuxer();if(t.constructor!==rr)throw new Error("Init input must match the input's format.");yield t.readMetadata(),this.movieTimescale=t.movieTimescale,this.movieDurationInTimescale=t.movieDurationInTimescale,this.metadataTags=t.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=t.fragmentTrackDefaults,this.psshBoxes=t.psshBoxes;for(const e of t.tracks){const t={id:e.id,demuxer:this,trackBacking:null,disposition:e.disposition,timescale:e.timescale,durationInMediaTimescale:e.durationInMediaTimescale,durationInMovieTimescale:e.durationInMovieTimescale,rotation:e.rotation,internalCodecId:e.internalCodecId,name:e.name,languageCode:e.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:e.editListPreviousSegmentDurations,editListOffset:e.editListOffset,encryptionInfo:e.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:e.info};if(e.trackBacking)if(I(t.info),"video"===t.info.type&&-1!==t.info.width){const e=t;t.trackBacking=new sr(e),this.tracks.push(t)}else if("audio"===t.info.type&&-1!==t.info.numberOfChannels){const e=t;t.trackBacking=new ar(e),this.tracks.push(t)}}})}getSampleTableForTrack(e){var t,i;if(e.sampleTable)return e.sampleTable;const r={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=r,null===e.sampleTableByteOffset)return r;I(this.moovSlice);const n=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(n),this.currentTrack=null;if("audio"===(null==(t=e.info)?void 0:t.type)&&e.info.codec&&di.includes(e.info.codec)&&0===r.sampleCompositionTimeOffsets.length){I("audio"===(null==(i=e.info)?void 0:i.type));const t=Pi(e.info.codec),n=[],s=[];for(let i=0;ie.startIndex),u=r.sampleTimingEntries[c],d=G(r.sampleTimingEntries,l,e=>e.startIndex),h=r.sampleTimingEntries[d],f=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,m=h.startDecodeTimestamp+(l-h.startIndex)*h.delta-f,p=C(n);p&&p.delta===m?p.count++:n.push({startIndex:a.startChunkIndex+i,startDecodeTimestamp:f,count:1,delta:m});const g=a.samplesPerChunk*t.sampleSize*e.info.numberOfChannels;s.push(g)}a.startSampleIndex=a.startChunkIndex,a.samplesPerChunk=1}r.sampleTimingEntries=n,r.sampleSizes=s}if(r.sampleCompositionTimeOffsets.length>0){r.presentationTimestamps=[];for(const e of r.sampleTimingEntries)for(let t=0;te.presentationTimestamp-t.presentationTimestamp),r.presentationTimestampIndexMap=Array(r.presentationTimestamps.length).fill(-1);for(let e=0;ee.moofOffset===s.moofOffset);if(r)dr(e,r.timestamp);else{const t=G(i,s.moofOffset-1,e=>e.moofOffset);if(-1!==t){const r=i[t];dr(e,r.endTimestamp)}}e.startTimestampIsFinal=!0}const r=G(i,e.startTimestamp,e=>e.startTimestamp);if(-1!==r&&i[r].moofOffset===s.moofOffset||i.splice(r+1,0,{moofOffset:s.moofOffset,startTimestamp:e.startTimestamp,endTimestamp:e.endTimestamp}),e.encryptionAuxInfo&&t.encryptionInfo){const i=yield pr(this.reader,t.encryptionInfo,e.encryptionAuxInfo);for(let t=0;t0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;fe(t.languageCode)||(t.languageCode=ae)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=el(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:h({},W),avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=ge,this.readContiguousBoxes(e.slice(ye,ke.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const i=zo(e);e.skip(3);const r=jo(e);for(let n=0;n0&&(1===a?(e.skip(4),l=8*jo(e),e.skip(8)):2===a&&(e.skip(4),c=Zo(e),o=jo(e),e.skip(4),l=jo(e),u=jo(e),e.skip(8))),t.info.numberOfChannels=o,t.info.sampleRate=c,t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+n.totalSize-e.filePos));const d="enca"===s?t.frmaCodecString:s;if(t.frmaCodecString=null,"mp4a"===d);else if("opus"===d)t.info.codec="opus",t.info.sampleRate=Si;else if("flac"===d)t.info.codec="flac";else if("ulaw"===d)t.info.codec="ulaw";else if("alaw"===d)t.info.codec="alaw";else if("ac-3"===d)t.info.codec="ac3";else if("ec-3"===d)t.info.codec="eac3";else if(yi.includes(d))t.info.codec="dts",t.info.dtsFormat=d;else if("twos"===d)8===l?t.info.codec="pcm-s8":16===l?t.info.codec=t.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(We._warn(`Unsupported sample size ${l} for codec 'twos'.`),t.info.codec=null);else if("sowt"===d)8===l?t.info.codec="pcm-s8":16===l?t.info.codec="pcm-s16":(We._warn(`Unsupported sample size ${l} for codec 'sowt'.`),t.info.codec=null);else if("raw "===d)t.info.codec="pcm-u8";else if("in24"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if("in32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if("fl32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if("fl64"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if("ipcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?16===e?t.info.codec="pcm-s16":24===e?t.info.codec="pcm-s24":32===e?t.info.codec="pcm-s32":(We._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null):16===e?t.info.codec="pcm-s16be":24===e?t.info.codec="pcm-s24be":32===e?t.info.codec="pcm-s32be":(We._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null)}else if("fpcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?32===e?t.info.codec="pcm-f32":64===e?t.info.codec="pcm-f64":(We._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null):32===e?t.info.codec="pcm-f32be":64===e?t.info.codec="pcm-f64be":(We._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=l+7>>3,i=Boolean(1&u),r=Boolean(2&u),n=4&u?-1:0;l>0&&l<=64&&(i?32===l&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):n&1<0?(t.encryptionInfo.defaultCryptByteBlock=r>>4,t.encryptionInfo.defaultSkipByteBlock=15&r):(t.encryptionInfo.defaultCryptByteBlock=0,t.encryptionInfo.defaultSkipByteBlock=0),t.encryptionInfo.defaultIsProtected=0!==zo(e),t.encryptionInfo.defaultPerSampleIvSize=zo(e),t.encryptionInfo.defaultKid=K(Lo(e,16)),t.encryptionInfo.defaultIsProtected&&0===t.encryptionInfo.defaultPerSampleIvSize){const i=zo(e),r=new Uint8Array(16);r.set(Lo(e,i),0),t.encryptionInfo.defaultConstantIv=r}}break;case"avcC":{const t=this.currentTrack;if(!t)break;if(I(t.info),0===ke.contentSize)break;t.info.codecDescription=Lo(e,ke.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;if(I(t.info),0===ke.contentSize)break;t.info.codecDescription=Lo(e,ke.contentSize)}break;case"vpcC":{const i=this.currentTrack;if(!i)break;I("video"===(null==(t=i.info)?void 0:t.type)),e.skip(4);const r=zo(e),n=zo(e),s=zo(e),a=s>>4,o=s>>1&7,l=1&s,c=zo(e),u=zo(e),d=zo(e);i.info.vp9CodecInfo={profile:r,level:n,bitDepth:a,chromaSubsampling:o,videoFullRangeFlag:l,colourPrimaries:c,transferCharacteristics:u,matrixCoefficients:d}}break;case"av1C":{const t=this.currentTrack;if(!t)break;I("video"===(null==(i=t.info)?void 0:i.type)),e.skip(1);const o=zo(e),l=o>>5,c=31&o,u=zo(e),d=u>>7,h=u>>6&1,f=u>>4&1,m=u>>3&1,p=u>>2&1,g=3&u,k=2===l&&h?u>>5&1?12:10:h?10:8;e.skip(1);const y=Lo(e,ke.contentSize-4),b=Nt(y);t.info.av1CodecInfo={profile:l,level:c,tier:d,bitDepth:k,monochrome:f,chromaSubsamplingX:m,chromaSubsamplingY:p,chromaSamplePosition:g,videoFullRangeFlag:null!=(r=null==b?void 0:b.videoFullRangeFlag)?r:0,colourPrimaries:null!=(n=null==b?void 0:b.colourPrimaries)?n:2,transferCharacteristics:null!=(s=null==b?void 0:b.transferCharacteristics)?s:2,matrixCoefficients:null!=(a=null==b?void 0:b.matrixCoefficients)?a:2}}break;case"colr":{const t=this.currentTrack;if(!t)break;I("video"===(null==(o=t.info)?void 0:o.type));const i=el(e,4);if("nclx"!==i&&"nclc"!==i)break;const r=qo(e),n=qo(e),s=qo(e);let a;"nclx"===i&&(a=Boolean(128&zo(e))),t.info.colorSpace={primaries:N[r],transfer:L[n],matrix:U[s],fullRange:a}}break;case"pasp":{const t=this.currentTrack;if(!t)break;I("video"===(null==(l=t.info)?void 0:l.type));const i=jo(e),r=jo(e);i>0&&r>0&&(i>r?t.info.squarePixelWidth=Math.round(t.info.width*i/r):t.info.squarePixelHeight=Math.round(t.info.height*r/i))}break;case"esds":{const t=this.currentTrack;if(!t||"audio"!==(null==(c=t.info)?void 0:c.type))break;e.skip(4);I(3===zo(e)),Vi(e),e.skip(2);const i=zo(e),r=0!==(64&i),n=0!==(32&i);if(0!==(128&i)&&e.skip(2),r){const t=zo(e);e.skip(t)}n&&e.skip(2);I(4===zo(e));const s=Vi(e),a=e.filePos,o=zo(e);if(64===o||103===o?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===o,objectType:null}):105===o||107===o?t.info.codec="mp3":221===o?t.info.codec="vorbis":169===o?t.info.codec="dts":We._warn(`Unsupported audio codec (objectTypeIndication ${o}) - discarding track.`),e.skip(12),s>e.filePos-a){I(5===zo(e));const i=Vi(e);if(t.info.codecDescription=Lo(e,i),"aac"===t.info.codec){const e=Ge(t.info.codecDescription);null!==e.outputNumberOfChannels&&(t.info.numberOfChannels=e.outputNumberOfChannels),null!==e.outputSampleRate&&(t.info.sampleRate=e.outputSampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(u=t.info)?void 0:u.type)),t.info.pcmLittleEndian=!!(255&qo(e))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(d=t.info)?void 0:d.type)),e.skip(4);const i=zo(e);t.info.pcmLittleEndian=Boolean(1&i),t.info.pcmSampleSize=zo(e)}break;case"dOps":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(m=t.info)?void 0:m.type)),e.skip(1);const i=zo(e),r=qo(e),n=jo(e),s=Ho(e),a=zo(e);let o;o=0!==a?Lo(e,2+i):new Uint8Array(0);const l=new Uint8Array(19+o.byteLength),c=new DataView(l.buffer);c.setUint32(0,1332770163,!1),c.setUint32(4,1214603620,!1),c.setUint8(8,1),c.setUint8(9,i),c.setUint16(10,r,!0),c.setUint32(12,n,!0),c.setInt16(16,s,!0),c.setUint8(18,a),l.set(o,19),t.info.codecDescription=l,t.info.numberOfChannels=i}break;case"dfLa":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(p=t.info)?void 0:p.type)),e.skip(4);const i=127,r=128,n=e.filePos;for(;e.filePos>>12,n=1+(i>>9&7);t.info.sampleRate=r,t.info.numberOfChannels=n,e.skip(20)}else e.skip(s);if(n&r)break}const s=e.filePos;e.filePos=n;const a=Lo(e,s-n),o=new Uint8Array(4+a.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(a,4),t.info.codecDescription=o}break;case"dac3":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(g=t.info)?void 0:g.type));const i=Lo(e,3),r=new Ke(i),n=r.readBits(2);r.skipBits(8);const s=r.readBits(3),a=r.readBits(1);n<3&&(t.info.sampleRate=Je[n]),t.info.numberOfChannels=Vt[s]+a}break;case"dec3":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(k=t.info)?void 0:k.type));const i=(e=>{if(e.length<2)return null;const t=new Ke(e),i=t.readBits(13),r=t.readBits(3),n=[];for(let s=0;s<=r&&!(Math.ceil(t.pos/8)+3>e.length);s++){const e=t.readBits(2),i=t.readBits(5);t.skipBits(1),t.skipBits(1);const r=t.readBits(3),s=t.readBits(3),a=t.readBits(1);t.skipBits(3);const o=t.readBits(4);let l=0;o>0?l=t.readBits(9):t.skipBits(1),n.push({fscod:e,fscod2:null,bsid:i,bsmod:r,acmod:s,lfeon:a,numDepSub:o,chanLoc:l})}return 0===n.length?null:{dataRate:i,substreams:n}})(Lo(e,ke.contentSize));if(!i){We._warn("Invalid dec3 box contents, ignoring.");break}const r=Gt(i);null!==r&&(t.info.sampleRate=r),t.info.numberOfChannels=Qt(i)}break;case"ddts":{const t=this.currentTrack;if(!t)break;I("audio"===(null==(y=t.info)?void 0:y.type));const i=(e=>{if(e.length<20)return null;const t=F(e),i=t.getUint32(0);if(0===i)return null;const r=new Ke(e);r.seekToByte(13);const n=r.readBits(2);r.skipBits(5);const s=r.readBits(1),a=r.readBits(6);r.skipBits(14),r.skipBits(1),r.skipBits(3);const o=r.readBits(16);let l=null;return 0!==o?l=ci(o):ae.id===i);if(!r)break;const n=jo(e),s=(12&n)>>2,a=3&n,o=[zo,qo,Wo,jo],l=o[(48&n)>>4],c=o[s],u=o[a],d=jo(e);for(let h=0;he.timestamp-t.timestamp);for(let e=0;e({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let n=0;ne.id===c);if(!u)break;const d=this.fragmentTrackDefaults.find(e=>e.trackId===c);this.currentTrack=u,u.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:null!=(T=null==d?void 0:d.defaultSampleDescriptionIndex)?T:null,defaultSampleDuration:null!=(v=null==d?void 0:d.defaultSampleDuration)?v:null,defaultSampleSize:null!=(S=null==d?void 0:d.defaultSampleSize)?S:null,defaultSampleFlags:null!=(w=null==d?void 0:d.defaultSampleFlags)?w:null,startTimestamp:null,encryptionAuxInfo:null},i?u.currentFragmentState.baseDataOffset=Go(e):l&&(u.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),r&&(u.currentFragmentState.sampleDescriptionIndex=jo(e)),n&&(u.currentFragmentState.defaultSampleDuration=jo(e)),s&&(u.currentFragmentState.defaultSampleSize=jo(e)),a&&(u.currentFragmentState.defaultSampleFlags=jo(e)),o&&(u.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;I(t.currentFragmentState);const i=zo(e);e.skip(3);const r=0===i?jo(e):Go(e);t.currentFragmentState.startTimestamp=r}break;case"trun":{const t=this.currentTrack;if(!t)break;I(this.currentFragment),I(t.currentFragmentState);const i=zo(e),r=Wo(e),n=Boolean(1&r),s=Boolean(4&r),a=Boolean(256&r),o=Boolean(512&r),l=Boolean(1024&r),c=Boolean(2048&r),u=jo(e);let d=null;n&&(d=Xo(e));let h,f=null;s&&(f=jo(e)),this.currentFragment.trackData.has(t.id)?(h=this.currentFragment.trackData.get(t.id),null!==d&&(h.currentOffset=t.currentFragmentState.baseDataOffset+d)):(h={track:t,currentTimestamp:0,currentOffset:t.currentFragmentState.baseDataOffset+(null!=d?d:0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(t.id,h));for(let m=0;m0&&(n=Lo(e,r));const s=mr(t);s.defaultSampleInfoSize=i,s.sampleSizes=n,s.sampleCount=r}break;case"saio":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=zo(e);if(1&Wo(e)){const i=el(e,4),r=jo(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const r=jo(e);if(0===r)break;r>1&&We._warn("Multiple saio entries are not supported; using the first offset only.");let n=0===i?jo(e):Number(Go(e));this.currentFragment&&(n+=this.currentFragment.moofOffset);mr(t).offset=n}break;case"senc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;I(this.currentFragment);const i=this.currentFragment.trackData.get(t.id);if(!i)break;e.skip(1);const r=Wo(e),n=Boolean(2&r),s=jo(e),a=t.encryptionInfo.defaultPerSampleIvSize;I(null!==a);for(let o=0;o0?r.set(Lo(e,a),0):r.set(t.encryptionInfo.defaultConstantIv,0);let s=null;if(n){const t=qo(e);s=[];for(let i=0;i0&&(null!=(ce=this.metadataTags).trackNumber||(ce.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=(ue=this.metadataTags).tracksTotal||(ue.tracksTotal=i))}break;case"trkn":if(n instanceof Uint8Array&&n.length>=6){const e=F(n),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&(null!=(de=this.metadataTags).trackNumber||(de.trackNumber=t)),i>0&&(null!=(he=this.metadataTags).tracksTotal||(he.tracksTotal=i))}break;case"disc":case"disk":if(n instanceof Uint8Array&&n.length>=6){const e=F(n),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&(null!=(me=this.metadataTags).discNumber||(me.discNumber=t)),i>0&&(null!=(pe=this.metadataTags).discsTotal||(pe.discsTotal=i))}}}}}return e.filePos=be,!0}}class nr{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.tracks)if(r.trackBacking.getType()===t&&i++,r===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){var e;const t=this.internalTrack;if(t.durationInMediaTimescale<=0)return null;I(t.trackBacking);const i=yield t.trackBacking.getFirstPacket({metadataOnly:!0});return(null!=(e=null==i?void 0:i.timestamp)?e:0)+t.durationInMediaTimescale/t.timescale})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getFirstPacket(e){return y(this,null,function*(){const t=yield this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)})}mapTimestampIntoTimescale(e){return oe(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}getPacket(e,t){return y(this,null,function*(){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=or(r,i),s=yield this.fetchPacketForSampleIndex(n,t);return fr(r)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=G(t.presentationTimestamps,i,e=>e.presentationTimestamp);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=ee(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=i);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>r.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.samples.findIndex(e=>e.isKeyFrame);return I(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)})}fetchPacketForSampleIndex(e,t){return y(this,null,function*(){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=cr(i,e);if(!r)return null;let n;if(t.metadataOnly)n=Oi;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.sampleOffset,r.sampleSize);if(Ce(t)&&(t=yield t),!t)return null;if(n=Lo(t,r.sampleSize),this.internalTrack.encryptionInfo){let t=null;if(this.internalTrack.encryptionAuxInfo){const i=yield pr(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);ee.timestamp),f=-1!==h?this.internalTrack.fragmentLookupTable[h]:null,m=G(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),p=-1!==m?this.internalTrack.fragmentPositionCache[m]:null,g=Math.max(null!=(s=null==f?void 0:f.moofOffset)?s:0,null!=(a=null==p?void 0:p.moofOffset)?a:0)||null;let k;for(e?null===g||e.moofOffset>=g?(k=e.moofOffset+e.moofSize,c=e):k=g:k=null!=g?g:0;;){if(c){const e=c.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=l.reader.requestSliceRange(k,8,16);if(Ce(e)&&(e=yield e),!e)break;const i=k,s=qi(e);if(!s)break;if("moof"===s.name){c=yield l.readFragment(i);const{sampleIndex:e,correctSampleFound:r}=t(c);if(r)return this.fetchPacketInFragment(c,e,n);-1!==e&&(u=c,d=e)}k=i+s.totalSize}if(f&&(!u||u.moofOffsety(this,null,function*(){var e,t,i,r,n,s,a;if("avc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("hevc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo&&(2!==(a=this.internalTrack.info.vp9CodecInfo).colourPrimaries||2!==a.transferCharacteristics||2!==a.matrixCoefficients))if("av1"!==this.internalTrack.info.codec||this.internalTrack.info.av1CodecInfo&&(e=>2!==e.colourPrimaries||2!==e.transferCharacteristics||2!==e.matrixCoefficients)(this.internalTrack.info.av1CodecInfo)){if("prores"===this.internalTrack.info.codec&&!this.internalTrack.info.proresCodecInfo){const e=yield this.getFirstPacket({});this.internalTrack.info.proresCodecInfo=e&&Ot(e.data)}}else{const e=yield this.getFirstPacket({}),t=e&&Nt(e.data);t&&(this.internalTrack.info.av1CodecInfo=t)}else{const t=yield this.getFirstPacket({}),i=t&&Dt(t.data);i&&(this.internalTrack.info.vp9CodecInfo=f(h({},null!=(e=this.internalTrack.info.vp9CodecInfo)?e:i),{videoFullRangeFlag:i.videoFullRangeFlag,colourPrimaries:i.colourPrimaries,transferCharacteristics:i.transferCharacteristics,matrixCoefficients:i.matrixCoefficients}))}else{const e=yield this.getFirstPacket({});this.internalTrack.info.hevcCodecInfo=e&&St(e.data)}else{const e=yield this.getFirstPacket({});this.internalTrack.info.avcCodecInfo=e&&ht(e.data)}if(!q(this.internalTrack.info.colorSpace)){const e=Ti(this.internalTrack.info);null!=(t=this.internalTrack.info.colorSpace).primaries||(t.primaries=e.primaries),null!=(i=this.internalTrack.info.colorSpace).transfer||(i.transfer=e.transfer),null!=(r=this.internalTrack.info.colorSpace).matrix||(r.matrix=e.matrix),null!=(n=this.internalTrack.info.colorSpace).fullRange||(n.fullRange=e.fullRange)}const o={codec:bi(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(s=this.internalTrack.info.codecDescription)?s:void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(o.displayAspectWidth=this.internalTrack.info.squarePixelWidth,o.displayAspectHeight=this.internalTrack.info.squarePixelHeight),o}))():null})}}class ar extends nr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return y(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>y(this,null,function*(){var e;if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=yield this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&ai(e.data)}return{codec:vi(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}}))():null})}}const or=(e,t)=>{if(e.presentationTimestamps){const i=G(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===i?-1:e.presentationTimestamps[i].sampleIndex}{const i=G(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===i)return-1;const r=e.sampleTimingEntries[i];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},lr=(e,t)=>{var i;if(!e.keySampleIndices)return or(e,t);if(e.presentationTimestamps){const i=G(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===i)return-1;for(let t=i;t>=0;t--){const i=e.presentationTimestamps[t].sampleIndex;if(-1!==$(e.keySampleIndices,i,e=>e))return i}return-1}{const r=or(e,t),n=G(e.keySampleIndices,r,e=>e);return null!=(i=e.keySampleIndices[n])?i:-1}},cr=(e,t)=>{const i=G(e.sampleTimingEntries,t,e=>e.startIndex),r=e.sampleTimingEntries[i];if(!r||r.startIndex+r.count<=t)return null;let n=r.startDecodeTimestamp+(t-r.startIndex)*r.delta;const s=G(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),a=e.sampleCompositionTimeOffsets[s];a&&t-a.startIndexe.startSampleIndex),c=e.sampleToChunk[l];I(c);const u=c.startChunkIndex+Math.floor((t-c.startSampleIndex)/c.samplesPerChunk),d=e.chunkOffsets[u],h=c.startSampleIndex+(u-c.startChunkIndex)*c.samplesPerChunk;let f=0,m=d;if(1===e.sampleSizes.length)m+=o*(t-h),f+=o*c.samplesPerChunk;else for(let g=h;ge)}},ur=(e,t)=>{var i;if(!e.keySampleIndices)return t+1;const r=G(e.keySampleIndices,t,e=>e);return null!=(i=e.keySampleIndices[r+1])?i:-1},dr=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const i of e.samples)i.presentationTimestamp+=t;for(const i of e.presentationTimestamps)i.presentationTimestamp+=t},hr=e=>{const[t,i]=e,r=Math.atan2(i,t);return Number.isFinite(r)?r*(180/Math.PI):0},fr=e=>0===e.sampleSizes.length,mr=e=>{var t,i,r;return e.currentFragmentState?null!=(i=(t=e.currentFragmentState).encryptionAuxInfo)?i:t.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}:null!=(r=e.encryptionAuxInfo)?r:e.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}},pr=(e,t,i)=>y(null,null,function*(){if(i.resolved)return i.resolved;if(null===i.offset||0===i.sampleCount)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(i.defaultSampleInfoSize>0)r=i.defaultSampleInfoSize*i.sampleCount;else{I(i.sampleSizes);for(let e=0;e0?i.defaultSampleInfoSize:i.sampleSizes[e],o=new Uint8Array(16);s>0?o.set(Lo(n,s),0):o.set(t.defaultConstantIv,0);let l=null;if(r>s){const e=qo(n);l=[];for(let t=0;te.defaultConstantIv?{iv:e.defaultConstantIv,subsamples:null}:null,kr=(e,t,i,r)=>y(null,null,function*(){var n;I(e.encryptionInfo);const s=e.encryptionInfo;I(null!==s.defaultKid);const a=s.defaultKid;let o;const l=e.demuxer.decryptionKeyCache.get(a);if(l)o=yield l;else{if(!(null==(n=e.demuxer.input._formatOptions.isobmff)?void 0:n.resolveKeyId))throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");const t=y(null,null,function*(){let t=e.demuxer.psshBoxes;if(r){t=[...t,...r.psshBoxes].filter(e=>null===e.keyIds||e.keyIds.includes(a));for(let e=0;e{I(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;iy(null,null,function*(){const n=new Uint8Array(16);n.set(i.iv,0);const s=yield crypto.subtle.importKey("raw",e,{name:"AES-CTR"},!1,["decrypt"]),a=e=>y(null,null,function*(){const t=yield crypto.subtle.decrypt({name:"AES-CTR",counter:n,length:64},s,e);return new Uint8Array(t)});if(!i.subsamples)return a(r);I(null!==t.defaultCryptByteBlock&&null!==t.defaultSkipByteBlock);const o=Tr(i.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock);let l=0;for(const e of o)for(const t of e.perSubsample)l+=t.length;const c=new Uint8Array(l);let u=0;for(const e of o)for(const t of e.perSubsample)c.set(r.subarray(t.offset,t.offset+t.length),u),u+=t.length;const d=yield a(c),h=new Uint8Array(r);let f=0;for(const e of o)for(const t of e.perSubsample)h.set(d.subarray(f,f+t.length),t.offset),f+=t.length;return h}),br=(e,t,i,r)=>{const n=new ir;n.init({key:e,iv:i.iv});const s=t.defaultCryptByteBlock,a=t.defaultSkipByteBlock;if(I(null!==s&&null!==a),!i.subsamples){const e=new Uint8Array(r),t=Math.floor(r.length/16);for(let i=0;i{const r=[],n=0!==t||0!==i;let s=0;for(const a of e){s+=a.clearLen;const e=[];if(n){let r=a.protectedLen,n=s;for(;r>0&&!(r<16*t);){const s=16*t;e.push({offset:n,length:s}),n+=s,r-=s;const a=Math.min(16*i,r);n+=a,r-=a}s+=a.protectedLen}else a.protectedLen>0&&e.push({offset:s,length:a.protectedLen}),s+=a.protectedLen;r.push({perSubsample:e})}return r};var vr,Sr;(Sr=vr||(vr={}))[Sr.EBML=440786851]="EBML",Sr[Sr.EBMLVersion=17030]="EBMLVersion",Sr[Sr.EBMLReadVersion=17143]="EBMLReadVersion",Sr[Sr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",Sr[Sr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",Sr[Sr.DocType=17026]="DocType",Sr[Sr.DocTypeVersion=17031]="DocTypeVersion",Sr[Sr.DocTypeReadVersion=17029]="DocTypeReadVersion",Sr[Sr.Void=236]="Void",Sr[Sr.Segment=408125543]="Segment",Sr[Sr.SeekHead=290298740]="SeekHead",Sr[Sr.Seek=19899]="Seek",Sr[Sr.SeekID=21419]="SeekID",Sr[Sr.SeekPosition=21420]="SeekPosition",Sr[Sr.Duration=17545]="Duration",Sr[Sr.Info=357149030]="Info",Sr[Sr.TimestampScale=2807729]="TimestampScale",Sr[Sr.MuxingApp=19840]="MuxingApp",Sr[Sr.WritingApp=22337]="WritingApp",Sr[Sr.Tracks=374648427]="Tracks",Sr[Sr.TrackEntry=174]="TrackEntry",Sr[Sr.TrackNumber=215]="TrackNumber",Sr[Sr.TrackUID=29637]="TrackUID",Sr[Sr.TrackType=131]="TrackType",Sr[Sr.FlagEnabled=185]="FlagEnabled",Sr[Sr.FlagDefault=136]="FlagDefault",Sr[Sr.FlagForced=21930]="FlagForced",Sr[Sr.FlagOriginal=21934]="FlagOriginal",Sr[Sr.FlagHearingImpaired=21931]="FlagHearingImpaired",Sr[Sr.FlagVisualImpaired=21932]="FlagVisualImpaired",Sr[Sr.FlagCommentary=21935]="FlagCommentary",Sr[Sr.FlagLacing=156]="FlagLacing",Sr[Sr.Name=21358]="Name",Sr[Sr.Language=2274716]="Language",Sr[Sr.LanguageBCP47=2274717]="LanguageBCP47",Sr[Sr.CodecID=134]="CodecID",Sr[Sr.CodecPrivate=25506]="CodecPrivate",Sr[Sr.CodecDelay=22186]="CodecDelay",Sr[Sr.SeekPreRoll=22203]="SeekPreRoll",Sr[Sr.DefaultDuration=2352003]="DefaultDuration",Sr[Sr.Video=224]="Video",Sr[Sr.PixelWidth=176]="PixelWidth",Sr[Sr.PixelHeight=186]="PixelHeight",Sr[Sr.DisplayWidth=21680]="DisplayWidth",Sr[Sr.DisplayHeight=21690]="DisplayHeight",Sr[Sr.DisplayUnit=21682]="DisplayUnit",Sr[Sr.AlphaMode=21440]="AlphaMode",Sr[Sr.Audio=225]="Audio",Sr[Sr.SamplingFrequency=181]="SamplingFrequency",Sr[Sr.Channels=159]="Channels",Sr[Sr.BitDepth=25188]="BitDepth",Sr[Sr.SimpleBlock=163]="SimpleBlock",Sr[Sr.BlockGroup=160]="BlockGroup",Sr[Sr.Block=161]="Block",Sr[Sr.BlockAdditions=30113]="BlockAdditions",Sr[Sr.BlockMore=166]="BlockMore",Sr[Sr.BlockAdditional=165]="BlockAdditional",Sr[Sr.BlockAddID=238]="BlockAddID",Sr[Sr.BlockDuration=155]="BlockDuration",Sr[Sr.ReferenceBlock=251]="ReferenceBlock",Sr[Sr.Cluster=524531317]="Cluster",Sr[Sr.Timestamp=231]="Timestamp",Sr[Sr.Cues=475249515]="Cues",Sr[Sr.CuePoint=187]="CuePoint",Sr[Sr.CueTime=179]="CueTime",Sr[Sr.CueTrackPositions=183]="CueTrackPositions",Sr[Sr.CueTrack=247]="CueTrack",Sr[Sr.CueClusterPosition=241]="CueClusterPosition",Sr[Sr.Colour=21936]="Colour",Sr[Sr.MatrixCoefficients=21937]="MatrixCoefficients",Sr[Sr.TransferCharacteristics=21946]="TransferCharacteristics",Sr[Sr.Primaries=21947]="Primaries",Sr[Sr.Range=21945]="Range",Sr[Sr.Projection=30320]="Projection",Sr[Sr.ProjectionType=30321]="ProjectionType",Sr[Sr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",Sr[Sr.Attachments=423732329]="Attachments",Sr[Sr.AttachedFile=24999]="AttachedFile",Sr[Sr.FileDescription=18046]="FileDescription",Sr[Sr.FileName=18030]="FileName",Sr[Sr.FileMediaType=18016]="FileMediaType",Sr[Sr.FileData=18012]="FileData",Sr[Sr.FileUID=18094]="FileUID",Sr[Sr.Chapters=272869232]="Chapters",Sr[Sr.Tags=307544935]="Tags",Sr[Sr.Tag=29555]="Tag",Sr[Sr.Targets=25536]="Targets",Sr[Sr.TargetTypeValue=26826]="TargetTypeValue",Sr[Sr.TargetType=25546]="TargetType",Sr[Sr.TagTrackUID=25541]="TagTrackUID",Sr[Sr.TagEditionUID=25545]="TagEditionUID",Sr[Sr.TagChapterUID=25540]="TagChapterUID",Sr[Sr.TagAttachmentUID=25542]="TagAttachmentUID",Sr[Sr.SimpleTag=26568]="SimpleTag",Sr[Sr.TagName=17827]="TagName",Sr[Sr.TagLanguage=17530]="TagLanguage",Sr[Sr.TagString=17543]="TagString",Sr[Sr.TagBinary=17541]="TagBinary",Sr[Sr.ContentEncodings=28032]="ContentEncodings",Sr[Sr.ContentEncoding=25152]="ContentEncoding",Sr[Sr.ContentEncodingOrder=20529]="ContentEncodingOrder",Sr[Sr.ContentEncodingScope=20530]="ContentEncodingScope",Sr[Sr.ContentCompression=20532]="ContentCompression",Sr[Sr.ContentCompAlgo=16980]="ContentCompAlgo",Sr[Sr.ContentCompSettings=16981]="ContentCompSettings",Sr[Sr.ContentEncryption=20533]="ContentEncryption";const wr=[vr.EBML,vr.Segment],Pr=[vr.SeekHead,vr.Info,vr.Cluster,vr.Tracks,vr.Cues,vr.Attachments,vr.Chapters,vr.Tags],Ir=[...wr,...Pr],xr=16,Cr=e=>{if(e.remainingLength<1)return null;const t=zo(e);if(e.skip(-1),0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;return e.remainingLength{if(e.remainingLength<1)return null;const t=zo(e);if(0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;if(e.remainingLength{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r{const t=Cr(e);if(null===t)return null;if(e.remainingLength{if(e.remainingLength<1)return null;if(255===zo(e))return;e.skip(-1);const t=Br(e);return null===t?null:72057594037927940!==t?t:void 0},Fr=e=>{I(e.remainingLength>=2);const t=_r(e);if(null===t)return null;const i=Rr(e);return null===i?null:{id:t,size:i}},Ar=(e,t)=>{const i=Lo(e,t);let r=0;for(;r{const i=Lo(e,t);let r=0;for(;r{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?Jo(e):Zo(e)},Nr=(e,t,i,r)=>y(null,null,function*(){const n=new Set(i);let s=t;for(;null===r||ss?r:s,found:!1}}),Or=(e,t,i,r)=>y(null,null,function*(){const n=u(2,16),s=new Set(i);let a=t;for(;ae.tracks.map(e=>e.trackBacking))})}getMimeType(){return y(this,null,function*(){yield this.readMetadata();const e=yield this.getTrackBackings(),t=yield Promise.all(e.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)})),hasAudio:this.segments.some(e=>e.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)})),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return y(this,null,function*(){yield this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&(yield this.loadSegmentMetadata(t)),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e=h(h({},e),t.metadataTags);return e})}readMetadata(){var e;return null!=(e=this.readMetadataPromise)?e:this.readMetadataPromise=(()=>y(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,xr);if(Ce(t)&&(t=yield t),!t)break;const i=Fr(t);if(!i)break;const r=i.id;let n=i.size;const s=t.filePos;if(r===vr.EBML){Jr(n);let e=this.reader.requestSlice(s,n);if(Ce(e)&&(e=yield e),!e)break;this.readContiguousElements(e)}else if(r===vr.Segment){if(yield this.readSegment(s,n),void 0===n)break;if(null===this.reader.fileSize)break}else if(r===vr.Cluster){if(null===this.reader.fileSize)break;if(void 0===n){n=(yield Nr(this.reader,s,Ir,this.reader.fileSize)).pos-s}const e=C(this.segments);e&&(e.elementEndPos=s+n)}Jr(n),e=s+n}}))()}readSegment(e,t){return y(this,null,function*(){var i;this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let r=e;for(;null===this.currentSegment.elementEndPos||re.id===s);if(-1!==l){const e=an[l].flag;this.currentSegment[e]=!0,Jr(a);let t=this.reader.requestSlice(o,a);Ce(t)&&(t=yield t),t&&this.readContiguousElements(t)}else if(s===vr.Tags||s===vr.Attachments){s===vr.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,Jr(a);let e=this.reader.requestSlice(o,a);Ce(e)&&(e=yield e),e&&this.readContiguousElements(e)}else if(s===vr.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===a)break;r=o+a}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const t of this.currentSegment.seekEntries){const i=an.find(e=>e.id===t.id);if(!i)continue;if(this.currentSegment[i.flag])continue;let r=this.reader.requestSliceRange(e+t.segmentPosition,2,xr);if(Ce(r)&&(r=yield r),!r)continue;const n=Fr(r);if(!n)continue;const{id:s,size:a}=n;if(s!==i.id)continue;Jr(a),this.currentSegment[i.flag]=!0;let o=this.reader.requestSlice(r.filePos,a);Ce(o)&&(o=yield o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const e of this.currentSegment.tracks)null!==e.defaultDurationNs&&(e.defaultDuration=this.currentSegment.timestampFactor*e.defaultDurationNs/1e9);const n=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const e of this.currentSegment.cuePoints){const t=n.get(e.trackId);t&&t.cuePoints.push(e)}for(const e of this.currentSegment.tracks){e.cuePoints.sort((e,t)=>e.time-t.time);for(let t=0;ta&&(a=e.cuePoints.length,s=e);for(const e of this.currentSegment.tracks)0===e.cuePoints.length&&(e.cuePoints=s.cuePoints);this.currentSegment=null})}readCluster(e,t){return y(this,null,function*(){var i;if((null==(i=t.lastReadCluster)?void 0:i.elementStartPos)===e)return t.lastReadCluster;let r=this.reader.requestSliceRange(e,2,xr);Ce(r)&&(r=yield r),I(r);const n=e,s=Fr(r);I(s);I(s.id===vr.Cluster);let a=s.size;const o=r.filePos;if(void 0===a){a=(yield Nr(this.reader,o,Ir,t.elementEndPos)).pos-o}let l=this.reader.requestSlice(o,a);Ce(l)&&(l=yield l);const c={segment:t,elementStartPos:n,elementEndPos:o+a,dataStartPos:o,timestamp:-1,trackData:new Map};if(this.currentCluster=c,l){const e=this.readContiguousElements(l,Ir);c.elementEndPos=e}for(const[,e]of c.trackData){const t=e.track;I(e.blocks.length>0);let i=!1;for(let n=0;n({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let n=0;n({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const r=e.blocks[e.presentationTimestamps[0].blockIndex],s=e.blocks[C(e.presentationTimestamps).blockIndex];e.startTimestamp=r.timestamp,e.endTimestamp=s.timestamp+s.duration;const a=G(t.clusterPositionCache,e.startTimestamp,e=>e.startTimestamp);-1!==a&&t.clusterPositionCache[a].elementStartPos===n||t.clusterPositionCache.splice(a+1,0,{elementStartPos:c.elementStartPos,startTimestamp:e.startTimestamp})}return t.lastReadCluster=c,c})}getTrackDataInCluster(e,t){let i=e.trackData.get(t);if(!i){const r=e.segment.tracks.find(e=>e.id===t);if(!r)return null;i={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,i)}return i}expandLacedBlocks(e,t){var i;for(let r=0;r=2;){const i=e.filePos;if(!this.traverseElement(e,t))return i}return e.filePos}traverseElement(e,t){var i,r,n,s,a,o,l,c,u,d,m,p,g,k,y,b,T,v,S,w,P,C,B,E,_,R,F,D,M,O,z,q,H,V,j,K,X,$,G,Q,Y,J,Z,ee,te,ie,re,ne,se,oe,le;const ce=Fr(e);if(!ce)return!1;if(t&&t.includes(ce.id))return!1;const{id:ue,size:de}=ce,he=e.filePos;switch(Jr(de),ue){case vr.DocType:this.isWebM="webm"===Ar(e,de);break;case vr.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(he,de)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case vr.SeekID:{const t=null==(i=this.currentSegment)?void 0:i.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=Er(e,de)}break;case vr.SeekPosition:{const t=null==(r=this.currentSegment)?void 0:r.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=Er(e,de)}break;case vr.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=Er(e,de),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case vr.Duration:if(!this.currentSegment)break;this.currentSegment.duration=Mr(e,de);break;case vr.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:f(h({},je),{primary:!1}),trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(he,de)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>{var t;return"decompress"!==(null==(t=e.data)?void 0:t.type)||e.scope!==tn.Block||e.data.algorithm!==nn.HeaderStripping})&&(We._warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,null!==this.currentTrack.info.displayWidth&&null!==this.currentTrack.info.displayHeight){const e=this.currentTrack.info.displayWidth*this.currentTrack.info.height,t=this.currentTrack.info.displayHeight*this.currentTrack.info.width;e>0&&t>0&&(e>t?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*e/t):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*t/e))}if(this.currentTrack.codecId===Lr)this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(this.currentTrack.codecId===zr)this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(t===Ur)this.currentTrack.info.codec="vp8";else if(t===qr)this.currentTrack.info.codec="vp9";else if(t===Wr)this.currentTrack.info.codec="av1";else if(t===Hr){const e=this.currentTrack.codecPrivate?A.decode(this.currentTrack.codecPrivate):"";ki.includes(e)&&(this.currentTrack.info.codec="prores",this.currentTrack.info.proresFormat=e)}const e=this.currentTrack;this.currentTrack.trackBacking=new un(e),this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type){t===Vr?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===jr?this.currentTrack.info.codec="mp3":t===Kr?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=Si):t===Xr?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===$r?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Gr?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Qr?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Yr?(this.currentTrack.info.codec="dts","A_DTS/EXPRESS"===this.currentTrack.codecId?this.currentTrack.info.dtsFormat="dtse":"A_DTS/LOSSLESS"===this.currentTrack.codecId&&(this.currentTrack.info.dtsFormat="dtsl")):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack;this.currentTrack.trackBacking=new dn(e),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case vr.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=Er(e,de);break;case vr.TrackType:{if(!this.currentTrack)break;const t=Er(e,de);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:h({},W),alphaMode:!1,proresFormat:null}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null})}break;case vr.FlagEnabled:if(!this.currentTrack)break;Er(e,de)||(this.currentTrack=null);break;case vr.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!Er(e,de);break;case vr.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!Er(e,de);break;case vr.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!Er(e,de);break;case vr.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!Er(e,de);break;case vr.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!Er(e,de);break;case vr.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!Er(e,de);break;case vr.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=Ar(e,de);break;case vr.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=Lo(e,de);break;case vr.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=Er(e,de);break;case vr.Name:if(!this.currentTrack)break;this.currentTrack.name=Dr(e,de);break;case vr.Language:if(!this.currentTrack)break;if(this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=Ar(e,de),fe(this.currentTrack.languageCode)||(this.currentTrack.languageCode=ae);break;case vr.LanguageBCP47:{if(!this.currentTrack)break;const t=Ar(e,de).split("-")[0];this.currentTrack.languageCode=t||ae,this.currentTrack.hasLanguageBcp47=!0}break;case vr.Video:if("video"!==(null==(s=null==(n=this.currentTrack)?void 0:n.info)?void 0:s.type))break;this.readContiguousElements(e.slice(he,de));break;case vr.PixelWidth:if("video"!==(null==(o=null==(a=this.currentTrack)?void 0:a.info)?void 0:o.type))break;this.currentTrack.info.width=Er(e,de);break;case vr.PixelHeight:if("video"!==(null==(c=null==(l=this.currentTrack)?void 0:l.info)?void 0:c.type))break;this.currentTrack.info.height=Er(e,de);break;case vr.DisplayWidth:if("video"!==(null==(d=null==(u=this.currentTrack)?void 0:u.info)?void 0:d.type))break;this.currentTrack.info.displayWidth=Er(e,de);break;case vr.DisplayHeight:if("video"!==(null==(p=null==(m=this.currentTrack)?void 0:m.info)?void 0:p.type))break;this.currentTrack.info.displayHeight=Er(e,de);break;case vr.DisplayUnit:if("video"!==(null==(k=null==(g=this.currentTrack)?void 0:g.info)?void 0:k.type))break;this.currentTrack.info.displayUnit=Er(e,de);break;case vr.AlphaMode:if("video"!==(null==(b=null==(y=this.currentTrack)?void 0:y.info)?void 0:b.type))break;this.currentTrack.info.alphaMode=1===Er(e,de);break;case vr.Colour:if("video"!==(null==(v=null==(T=this.currentTrack)?void 0:T.info)?void 0:v.type))break;this.readContiguousElements(e.slice(he,de));break;case vr.MatrixCoefficients:{if("video"!==(null==(w=null==(S=this.currentTrack)?void 0:S.info)?void 0:w.type))break;const t=Er(e,de),i=U[t];this.currentTrack.info.colorSpace.matrix=i}break;case vr.Range:{if("video"!==(null==(C=null==(P=this.currentTrack)?void 0:P.info)?void 0:C.type))break;const t=Er(e,de);this.currentTrack.info.colorSpace.fullRange=1===t||2===t?2===t:void 0}break;case vr.TransferCharacteristics:{if("video"!==(null==(E=null==(B=this.currentTrack)?void 0:B.info)?void 0:E.type))break;const t=Er(e,de),i=L[t];this.currentTrack.info.colorSpace.transfer=i}break;case vr.Primaries:{if("video"!==(null==(R=null==(_=this.currentTrack)?void 0:_.info)?void 0:R.type))break;const t=Er(e,de),i=N[t];this.currentTrack.info.colorSpace.primaries=i}break;case vr.Projection:if("video"!==(null==(D=null==(F=this.currentTrack)?void 0:F.info)?void 0:D.type))break;this.readContiguousElements(e.slice(he,de));break;case vr.ProjectionPoseRoll:{if("video"!==(null==(O=null==(M=this.currentTrack)?void 0:M.info)?void 0:O.type))break;const t=-Mr(e,de);try{this.currentTrack.info.rotation=x(t)}catch(me){}}break;case vr.Audio:if("audio"!==(null==(q=null==(z=this.currentTrack)?void 0:z.info)?void 0:q.type))break;this.readContiguousElements(e.slice(he,de));break;case vr.SamplingFrequency:if("audio"!==(null==(V=null==(H=this.currentTrack)?void 0:H.info)?void 0:V.type))break;this.currentTrack.info.sampleRate=Mr(e,de);break;case vr.Channels:if("audio"!==(null==(K=null==(j=this.currentTrack)?void 0:j.info)?void 0:K.type))break;this.currentTrack.info.numberOfChannels=Er(e,de);break;case vr.BitDepth:if("audio"!==(null==($=null==(X=this.currentTrack)?void 0:X.info)?void 0:$.type))break;this.currentTrack.info.bitDepth=Er(e,de);break;case vr.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(he,de)),this.currentCueTime=null;break;case vr.CueTime:this.currentCueTime=Er(e,de);break;case vr.CueTrackPositions:{if(null===this.currentCueTime)break;I(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(he,de)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case vr.CueTrack:{const t=null==(G=this.currentSegment)?void 0:G.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=Er(e,de)}break;case vr.CueClusterPosition:{const t=null==(Q=this.currentSegment)?void 0:Q.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;I(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+Er(e,de)}break;case vr.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=Er(e,de);break;case vr.SimpleBlock:{if(!this.currentCluster)break;const t=Br(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=Ho(e),n=zo(e),s=n>>1&3;let a=!!(128&n);"audio"===(null==(Y=i.track.info)?void 0:Y.type)&&i.track.info.codec&&(a=!0);const o=Lo(e,de-(e.filePos-he)),l=i.track.decodingInstructions.length>0;i.blocks.push({timestamp:r,duration:0,isKeyFrame:a,data:o,lacing:s,decoded:!l,postProcessed:!1,mainAdditional:null})}break;case vr.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(he,de)),this.currentBlock=null;break;case vr.Block:{if(!this.currentCluster)break;const t=Br(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=Ho(e),n=zo(e)>>1&3,s=Lo(e,de-(e.filePos-he)),a=i.track.decodingInstructions.length>0;this.currentBlock={timestamp:r,duration:0,isKeyFrame:!0,data:s,lacing:n,decoded:!a,postProcessed:!1,mainAdditional:null},i.blocks.push(this.currentBlock)}break;case vr.BlockAdditions:this.readContiguousElements(e.slice(he,de));break;case vr.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(he,de)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case vr.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=Lo(e,de);break;case vr.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=Er(e,de);break;case vr.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=Er(e,de);break;case vr.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case vr.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(he,de));break;case vr.Targets:this.readContiguousElements(e.slice(he,de));break;case vr.TargetTypeValue:50!==Er(e,de)&&(this.currentTagTargetIsMovie=!1);break;case vr.TagTrackUID:case vr.TagEditionUID:case vr.TagChapterUID:case vr.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case vr.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(he,de));break;case vr.TagName:this.currentSimpleTagName=Dr(e,de);break;case vr.TagString:{if(!this.currentSimpleTagName)break;const t=Dr(e,de);this.processTagValue(this.currentSimpleTagName,t)}break;case vr.TagBinary:{if(!this.currentSimpleTagName)break;const t=Lo(e,de);this.processTagValue(this.currentSimpleTagName,t)}break;case vr.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(he,de));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(null!=t.raw||(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new Ve(this.currentAttachedFile.fileData,null!=(J=this.currentAttachedFile.fileMediaType)?J:void 0,null!=(Z=this.currentAttachedFile.fileName)?Z:void 0,null!=(ee=this.currentAttachedFile.fileDescription)?ee:void 0)),(null==(te=this.currentAttachedFile.fileMediaType)?void 0:te.startsWith("image/"))&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let i="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?i="coverFront":t.startsWith("back.")&&(i="coverBack")}null!=t.images||(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:i,name:null!=(ie=this.currentAttachedFile.fileName)?ie:void 0,description:null!=(re=this.currentAttachedFile.fileDescription)?re:void 0})}this.currentAttachedFile=null}break;case vr.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let i=BigInt("0");for(let r=0;rt.order-e.order);break;case vr.ContentEncoding:this.currentDecodingInstruction={order:0,scope:tn.Block,data:null},this.readContiguousElements(e.slice(he,de)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case vr.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=Er(e,de);break;case vr.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=Er(e,de);break;case vr.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:nn.Zlib,settings:null},this.readContiguousElements(e.slice(he,de));break;case vr.ContentCompAlgo:if("decompress"!==(null==(se=null==(ne=this.currentDecodingInstruction)?void 0:ne.data)?void 0:se.type))break;this.currentDecodingInstruction.data.algorithm=Er(e,de);break;case vr.ContentCompSettings:if("decompress"!==(null==(le=null==(oe=this.currentDecodingInstruction)?void 0:oe.data)?void 0:le.type))break;this.currentDecodingInstruction.data.settings=Lo(e,de);break;case vr.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=he+de,!0}decodeBlockData(e,t){I(e.decodingInstructions.length>0);let i=t;for(const r of e.decodingInstructions)if(I(r.data),"decompress"===r.data.type)if(r.data.algorithm===nn.HeaderStripping)if(r.data.settings&&r.data.settings.length>0){const e=r.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var i,r;if(!(null==(i=this.currentSegment)?void 0:i.metadataTags))return;const n=this.currentSegment.metadataTags;if(null!=n.raw||(n.raw={}),null!=(r=n.raw)[e]||(r[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":null!=n.title||(n.title=t);break;case"description":null!=n.description||(n.description=t);break;case"artist":null!=n.artist||(n.artist=t);break;case"album":null!=n.album||(n.album=t);break;case"album_artist":null!=n.albumArtist||(n.albumArtist=t);break;case"genre":null!=n.genre||(n.genre=t);break;case"comment":null!=n.comment||(n.comment=t);break;case"lyrics":null!=n.lyrics||(n.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||null!=n.date||(n.date=e)}break;case"track_number":case"part_number":{const e=t.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=n.trackNumber||(n.trackNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=n.tracksTotal||(n.tracksTotal=r))}break;case"disc_number":case"disc":{const e=t.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=n.discNumber||(n.discNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=n.discsTotal||(n.discsTotal=r))}}}getDurationFromMetadata(e){return y(this,null,function*(){if(e.duration<=0)return null;let t=null;for(const r of e.tracks){I(r.trackBacking);const e=yield r.trackBacking.getFirstPacket({metadataOnly:!0});e&&(t=Math.min(null!=t?t:1/0,e.timestamp))}let i=e.duration/e.timestampFactor;return i+=null!=t?t:0,i})}}class cn{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.segments)for(const e of r.tracks)if(e.trackBacking.getType()===t&&i++,e===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return this.internalTrack.demuxer.getDurationFromMetadata(this.internalTrack.segment)})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getFirstPacket(e){return y(this,null,function*(){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)})}intoTimescale(e){return oe(e*this.internalTrack.segment.timestampFactor)}getPacket(e,t){return y(this,null,function*(){const i=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=G(t.presentationTimestamps,i,e=>e.timestamp);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=ee(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=i);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.blocks.findIndex(e=>e.isKeyFrame);return I(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)})}fetchPacketInCluster(e,t,i){return y(this,null,function*(){var r,n;if(-1===t)return null;const s=e.trackData.get(this.internalTrack.id).blocks[t];if(I(s),s.decoded||(s.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,s.data),s.decoded=!0),!s.postProcessed){if("prores"===(null==(r=this.internalTrack.info)?void 0:r.codec)){if(!(s.data.length>=8&&105===s.data[4]&&99===s.data[5]&&112===s.data[6]&&102===s.data[7])){const e=new Uint8Array(s.data.length+8);F(e).setUint32(0,e.length,!1),e[4]=105,e[5]=99,e[6]=112,e[7]=102,e.set(s.data,8),s.data=e}}s.postProcessed=!0}const a=i.metadataOnly?Oi:s.data,o=s.timestamp/this.internalTrack.segment.timestampFactor,l=s.duration/this.internalTrack.segment.timestampFactor,c={};s.mainAdditional&&"video"===(null==(n=this.internalTrack.info)?void 0:n.type)&&this.internalTrack.info.alphaMode&&(c.alpha=i.metadataOnly?Oi:s.mainAdditional,c.alphaByteLength=s.mainAdditional.byteLength);const u=new Li(a,s.isKeyFrame?"key":"delta",o,l,e.dataStartPos+t,s.data.byteLength,c);return this.packetToClusterLocation.set(u,{cluster:e,blockIndex:t}),u})}performClusterLookup(e,t,i,r,n){return y(this,null,function*(){var s,a,o,l;const{demuxer:c,segment:u}=this.internalTrack;let d=null,h=null,f=-1;if(e){const{blockIndex:i,correctBlockFound:r}=t(e);if(r)return this.fetchPacketInCluster(e,i,n);-1!==i&&(h=e,f=i)}const m=G(this.internalTrack.cuePoints,i,e=>e.time),p=-1!==m?this.internalTrack.cuePoints[m]:null,g=G(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),k=-1!==g?this.internalTrack.clusterPositionCache[g]:null,y=Math.max(null!=(s=null==p?void 0:p.clusterPosition)?s:0,null!=(a=null==k?void 0:k.elementStartPos)?a:0)||null;let b;for(e?null===y||e.elementStartPos>=y?(b=e.elementEndPos,d=e):b=y:b=null!=y?y:u.clusterSeekStartPos;null===u.elementEndPos||b<=u.elementEndPos-2;){if(d){const e=d.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=c.reader.requestSliceRange(b,2,xr);if(Ce(e)&&(e=yield e),!e)break;const i=b,s=Fr(e);if(!s||!Pr.includes(s.id)&&s.id!==vr.Void){const e=yield Or(c.reader,i,Pr,Math.min(null!=(o=u.elementEndPos)?o:1/0,i+on));if(e){b=e;continue}break}const a=s.id;let l=s.size;const m=e.filePos;if(a===vr.Cluster){d=yield c.readCluster(i,u),l=d.elementEndPos-m;const{blockIndex:e,correctBlockFound:r}=t(d);if(r)return this.fetchPacketInCluster(d,e,n);-1!==e&&(h=d,f=e)}if(void 0===l){I(a!==vr.Cluster);l=(yield Nr(c.reader,m,Ir,u.elementEndPos)).pos-m}const p=m+l;if(null===u.elementEndPos){let e=c.reader.requestSliceRange(p,2,xr);if(Ce(e)&&(e=yield e),!e)break;if(_r(e)===vr.Segment){u.elementEndPos=p;break}}b=p}if(p&&(!h||h.elementStartPosy(this,null,function*(){var e,t,i,r,n;let s=null;("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"prores"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(s=yield this.getFirstPacket({}));const a={width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&s?ht(s.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&s?St(s.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&s?Dt(s.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&s?Nt(s.data):null,proresCodecInfo:"prores"===this.internalTrack.info.codec&&s?Ot(s.data):null,proresFormat:this.internalTrack.info.proresFormat};if(!q(this.internalTrack.info.colorSpace)){const n=Ti(a);null!=(e=this.internalTrack.info.colorSpace).primaries||(e.primaries=n.primaries),null!=(t=this.internalTrack.info.colorSpace).transfer||(t.transfer=n.transfer),null!=(i=this.internalTrack.info.colorSpace).matrix||(i.matrix=n.matrix),null!=(r=this.internalTrack.info.colorSpace).fullRange||(r.fullRange=n.fullRange)}const o={codec:bi(a),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(n=this.internalTrack.info.codecDescription)?n:void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(o.displayAspectWidth=this.internalTrack.info.squarePixelWidth,o.displayAspectHeight=this.internalTrack.info.squarePixelHeight),o}))():null})}}class dn extends cn{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return y(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>y(this,null,function*(){var e;if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=yield this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&ai(e.data)}return{codec:vi({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo,dtsFormat:this.internalTrack.info.dtsFormat}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}}))():null})}}const hn=(e,t,i,r=null)=>y(null,null,function*(){const n=u(2,16);let s=t;for(;null===i||s=4;){const t=a.filePos,i=jo(a),n=null!==e.fileSize?e.fileSize-s:null,o=Ri(i,n);if(o.header&&(!r||o.header.sampleRate===r.sampleRate&&o.header.mpegVersionId===r.mpegVersionId&&o.header.layer===r.layer&&Mi(o.header.channel)===Mi(r.channel)))return{header:o.header,startPos:s};a.filePos=t+o.bytesAdvanced,s=a.filePos}}return null});class fn extends Ni{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.firstFrameHeaderPos=null,this.xingFrameHeader=null,this.xingFrameHeaderPos=null,this.loadedSamples=[],this.metadataTags=null,this.xingData=null,this.trackBackings=[],this.readingMutex=new V,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return y(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();if(!this.firstFrameHeader&&this.xingFrameHeader&&(this.firstFrameHeader=this.xingFrameHeader,this.firstFrameHeaderPos=this.xingFrameHeaderPos),!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.trackBackings=[new mn(this)]}))()})}advanceReader(){return y(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,ol);if(Ce(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=dl(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=yield hn(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const i=_i(t.mpegVersionId,t.channel);let r=this.reader.requestSlice(e.startPos+i,4);if(Ce(r)&&(r=yield r),r){const n=jo(r);if(n===Bi||n===Ei){if(this.xingFrameHeader||(this.xingFrameHeader=t,this.xingFrameHeaderPos=e.startPos),!this.xingData){let t=this.reader.requestSlice(e.startPos+i+4,12);if(Ce(t)&&(t=yield t),t){const e=Lo(t,12),i=F(e),r=i.getUint32(0,!1);this.xingData={frameCount:r&Ai.FrameCount?i.getUint32(4,!1):null,fileSize:r&Ai.FileSize?i.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=t,this.firstFrameHeaderPos=e.startPos);const n=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,s={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:n,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(s),this.nextTimestampInSamples+=t.audioSamplesInFrame})}getMimeType(){return y(this,null,function*(){return"audio/mpeg"})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return y(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let i=this.reader.requestSlice(e,ol);if(Ce(i)&&(i=yield i),!i)break;const r=dl(i);if(!r)break;t=!0;let n=this.reader.requestSlice(i.filePos,r.size);if(Ce(n)&&(n=yield n),!n)break;hl(n,r,this.metadataTags),e=i.filePos+r.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=al){let e=this.reader.requestSlice(this.reader.fileSize-al,al);Ce(e)&&(e=yield e),I(e);"TAG"===el(e,3)&&cl(e,this.metadataTags)}return this.metadataTags}finally{e()}})}}class mn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return I(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){const e=this.demuxer;if(I(null!==e.firstFrameHeader),I(null!==e.firstFrameHeaderPos),e.xingData){if(null!==e.xingData.frameCount)return e.xingData.frameCount*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}else if(null!==e.reader.fileSize){const s=(t=e.firstFrameHeader.lowSamplingFrequency,i=e.firstFrameHeader.layer,r=e.firstFrameHeader.bitrate,n=e.firstFrameHeader.sampleRate,0===i?0:1===i?144*r/(n<e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}})}getPacket(e,t){return y(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=G(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1>>0&4294967295}const kn=e=>{const t=F(e),i=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let n=0;n>>24^t])>>>0}return t.setUint32(22,i,!0),r},yn=(e,t,i)=>{let r=0,n=null;if(e.length>0)if("vorbis"===t.codec){I(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,a=(e[0]&s)>>1;if(a>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=i;const l=t.vorbisInfo.modeBlockflags[a];if(n=t.vorbisInfo.blocksizes[l],1===l){const i=1+(1|s),r=e[0]&i?1:0;o=t.vorbisInfo.blocksizes[r]}r=null!==o?o+n>>2:0}else if("opus"===t.codec){r=(e=>{const t=e[0]>>3,i=3&e[0];let r;return r=0===i?1:1===i||2===i?2:63&e[1],{durationInSamples:Lt[t]*r}})(e).durationInSamples}return{durationInSamples:r,vorbisBlockSize:n}},bn=27,Tn=282,vn=e=>{const t=e.filePos;if(Ko(e)!==pn)return null;e.skip(1);const i=zo(e),r=Yo(e),n=Ko(e),s=Ko(e),a=Ko(e),o=zo(e),l=new Uint8Array(o);for(let d=0;de+t,0);return{headerStartPos:t,totalSize:c+u,dataStartPos:t+c,dataSize:u,headerType:i,granulePosition:r,serialNumber:n,sequenceNumber:s,checksum:a,lacingValues:l}},Sn=(e,t)=>{for(;e.filePos>>8&255)===i||(t>>>16&255)===i||(t>>>24&255)===i){if(e.skip(-4),t===pn)return!0;e.skip(1)}}return!1};class wn extends Ni{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.trackBackings=[],this.metadataTags={},this.reader=e._reader}readMetadata(){return y(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,bn,Tn);if(Ce(t)&&(t=yield t),!t)break;const i=vn(t);if(!i)break;if(!!!(2&i.headerType))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(const t of this.bitstreams){const e=yield this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?yield this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&(yield this.readOpusMetadata(e,t)),null!==t.codecInfo.codec&&this.trackBackings.push(new Pn(t,this)))}}))()})}readVorbisMetadata(e,t){return y(this,null,function*(){let i=yield this.findNextPacketStart(e);if(!i)return;const r=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;if(i=yield this.findNextPacketStart(r),!i)return;const n=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!n)return;if(3!==r.data[0]||5!==n.data[0])return;const s=[],a=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};a(e.data.length),a(r.data.length);const o=new Uint8Array(1+s.length+e.data.length+r.data.length+n.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(r.data,1+s.length+e.data.length),o.set(n.data,1+s.length+e.data.length+r.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=n;const l=F(e.data);t.numberOfChannels=l.getUint8(11),t.sampleRate=l.getUint32(12,!0);const c=l.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&c),1<<(c>>4)],modeBlockflags:zt(n.data).modeBlockflags},Ht(r.data.subarray(7),this.metadataTags)})}readOpusMetadata(e,t){return y(this,null,function*(){const i=yield this.findNextPacketStart(e);if(!i)return;const r=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=r;const n=(e=>{const t=F(e),i=t.getUint8(9),r=t.getUint16(10,!0),n=t.getUint32(12,!0),s=t.getInt16(16,!0),a=t.getUint8(18);let o=null;return a&&(o=e.subarray(19,21+i)),{outputChannelCount:i,preSkip:r,inputSampleRate:n,outputGain:s,channelMappingFamily:a,channelMappingTable:o}})(e.data);t.numberOfChannels=n.outputChannelCount,t.sampleRate=Si,t.codecInfo.opusInfo={preSkip:n.preSkip},Ht(r.data.subarray(8),this.metadataTags)})}readPacket(e,t){return y(this,null,function*(){I(te+t.length,0);if(0===o)return null;const l=new Uint8Array(o);let c=0;for(let e=0;e{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(yield Promise.all(this.trackBackings.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})))).filter(Boolean)})})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return y(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}class Pn{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new V,this.internalSampleRate="opus"===e.codecInfo.codec?Si:e.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){const e=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return I(-1!==e),e+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return null})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}getDecoderConfig(){return y(this,null,function*(){var e;return I(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:null!=(e=this.bitstream.description)?e:void 0}})}getName(){return null}getLanguageCode(){return ae}getDisposition(){return f(h({},je),{primary:!1})}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(I(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,i){if(!e)return null;const{durationInSamples:r,vorbisBlockSize:n}=yn(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new Li(i.metadataOnly?Oi:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,r/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:r,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:n}),s}getFirstPacket(e){return y(this,null,function*(){I(this.bitstream.lastMetadataPacket);const t=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(I(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const r=yield this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(r,{timestampInSamples:i,vorbisLastBlocksize:null},e)})}getNextPacket(e,t){return y(this,null,function*(){const i=this.encodedPacketToMetadata.get(e);if(!i)throw new Error("Packet was not created from this track.");const r=yield this.demuxer.findNextPacketStart(i.packet);if(!r)return null;const n=i.timestampInSamples+i.durationInSamples,s=yield this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:n,vorbisLastBlocksize:i.vorbisBlockSize},t)})}getPacket(e,t){return y(this,null,function*(){var i,r;if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const n=oe(e*this.internalSampleRate);if(0===n)return this.getFirstPacket(t);if(n<0)return null;I(this.bitstream.lastMetadataPacket);const s=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!s)return null;let a=s.startPage,o=this.demuxer.reader.fileSize;const l=[a];e:for(;a.headerStartPos+a.totalSizen?o=c.headerStartPos:(a=c,l.push(c));continue e}i=c.headerStartPos+c.totalSize}}let c=s.startPage;for(const e of l){if(e.granulePosition===a.granulePosition)break;(!c||e.headerStartPos>c.headerStartPos)&&(c=e)}let u=c;const d=[u];for(;u.serialNumber!==this.bitstream.serialNumber||u.granulePosition!==a.granulePosition;){const e=u.headerStartPos+u.totalSize;let t=this.demuxer.reader.requestSliceRange(e,bn,Tn);Ce(t)&&(t=yield t),I(t);const i=vn(t);I(i),u=i,u.serialNumber===this.bitstream.serialNumber&&d.push(u)}I(-1!==u.granulePosition);let h,f,m=null,p=u,g=0;if(u.headerStartPos===s.startPage.headerStartPos)h=this.granulePositionToTimestampInSamples(0),f=!0,m=0;else{h=0,f=!1;for(let t=u.lacingValues.length-1;t>=0;t--){if(u.lacingValues[t]<255){m=t+1;break}}if(null===m)throw new Error("Invalid page with granule position: no packets end on this page.");g=m-1;const e={data:Oi,endPage:p,endSegmentIndex:g};if(yield this.demuxer.findNextPacketStart(e)){const e=xn(d,u,m);I(e);const t=In(d,e.page,e.segmentIndex);t&&(u=t.page,m=t.segmentIndex)}else for(;;){const e=xn(d,u,m);if(!e)break;const t=In(d,e.page,e.segmentIndex);if(!t)break;if(u=t.page,m=t.segmentIndex,e.page.headerStartPos!==p.headerStartPos){p=e.page,g=e.segmentIndex;break}}}let k=null,y=null;for(;null!==u;){I(null!==m);const e=yield this.demuxer.readPacket(u,m);if(!e)break;if(!(u.headerStartPos===s.startPage.headerStartPos&&mn||Math.max(a.timestampInSamples,0)===n))break}const a=yield this.demuxer.findNextPacketStart(e);if(!a)break;u=a.startPage,m=a.startSegmentIndex}return k})}getPacketSequential(e,t){return y(this,null,function*(){const i=yield this.sequentialScanMutex.acquire();try{const i=oe(e*this.internalSampleRate);e=i/this.internalSampleRate;const r=G(this.sequentialScanCache,i,e=>e.timestampInSamples);let n;if(-1!==r){const e=this.sequentialScanCache[r];n=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else n=yield this.getFirstPacket(t);let s=0;for(;n&&n.timestampe)break;if(n=i,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(n);I(e),this.sequentialScanCache.length>0&&I(C(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return n}finally{i()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const In=(e,t,i)=>{let r=t,n=i;e:for(;;){for(n--;n>=0;n--){if(r.lacingValues[n]<255){n++;break e}}I(-1===n);if(!(1&r.headerType)){n=0;break}const t=Z(e,e=>e.headerStartPos{if(i>0)return{page:t,segmentIndex:i-1};const r=Z(e,e=>e.headerStartPosy(this,null,function*(){var e,t;let i=this.reader.requestSlice(0,12);Ce(i)&&(i=yield i),I(i);const r=el(i,4),n="RIFX"!==r,s="RF64"===r,a=Vo(i,n);let o=s?this.reader.fileSize:Math.min(a+8,null!=(e=this.reader.fileSize)?e:1/0);if("WAVE"!==el(i,4))throw new Error("Invalid WAVE file - wrong format");let l=0,c=null,u=i.filePos;for(;null===o||u=18&&357!==n){const e=Uo(r,i),s=t-18;if(Math.min(s,e)>=22&&n===Cn.EXTENSIBLE){r.skip(6);const e=Lo(r,16);n=e[0]|e[1]<<8}}if(n!==Cn.MULAW&&n!==Cn.ALAW||(l=8),n!==Cn.PCM&&n!==Cn.IEEE_FLOAT&&n!==Cn.ALAW&&n!==Cn.MULAW)throw new Error(`Unsupported WAVE codec (format tag ${n}). Only integer/float PCM, A-law, and \u03bc-law are supported.`);if(n===Cn.PCM&&![8,16,24,32].includes(l))throw new Error(`Unsupported WAVE PCM bit depth (${l}). Only 8, 16, 24, and 32 bits are supported.`);if(n===Cn.IEEE_FLOAT&&![32,64].includes(l))throw new Error(`Unsupported WAVE float bit depth (${l}). Only 32 and 64 bits are supported.`);this.audioInfo={format:n,numberOfChannels:s,sampleRate:a,sampleSizeInBytes:Math.ceil(l/8),blockSizeInBytes:o}})}parseListChunk(e,t,i){return y(this,null,function*(){var r,n,s,a,o,l,c,u,d,h,f;let m=this.reader.requestSlice(e,t);if(Ce(m)&&(m=yield m),!m)return;const p=el(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=el(m,4),t=Vo(m,i),p=Lo(m,t);let k=0;for(let i=0;i0&&(null!=(l=this.metadataTags).trackNumber||(l.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=(c=this.metadataTags).tracksTotal||(c.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||null!=(u=this.metadataTags).date||(u.date=e)}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&(null!=(d=this.metadataTags).date||(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":null!=(h=this.metadataTags).genre||(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":null!=(f=this.metadataTags).comment||(f.comment=y)}g+=8+t+(1&t)}})}parseId3Chunk(e,t){return y(this,null,function*(){let i=this.reader.requestSlice(e,t);if(Ce(i)&&(i=yield i),!i)return;const r=dl(i);if(r){const n=t-ol;if(r.size=Math.min(r.size,n),r.size>0){const t=i.slice(e+ol,r.size);hl(t,r,this.metadataTags)}}})}getCodec(){if(I(this.audioInfo),this.audioInfo.format===Cn.MULAW)return"ulaw";if(this.audioInfo.format===Cn.ALAW)return"alaw";if(this.audioInfo.format===Cn.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}if(this.audioInfo.format===Cn.IEEE_FLOAT){if(4===this.audioInfo.sampleSizeInBytes)return"pcm-f32";if(8===this.audioInfo.sampleSizeInBytes)return"pcm-f64"}I(!1)}getMimeType(){return y(this,null,function*(){return"audio/wav"})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return y(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}const _n=2048;class Rn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.format}getDecoderConfig(){return y(this,null,function*(){const e=this.demuxer.getCodec();return e?(I(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null})}getNumberOfChannels(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return I(-1!==this.demuxer.dataSize),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getName(){return null}getLanguageCode(){return ae}getDisposition(){return h({},je)}getPacketAtIndex(e,t){return y(this,null,function*(){I(e>=0),I(this.demuxer.audioInfo);const i=e*_n*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const r=Math.min(_n*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);if(Ce(e)&&(e=yield e),!e)return null}let n;if(t.metadataOnly)n=Oi;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);Ce(e)&&(e=yield e),I(e),n=Lo(e,r)}const s=e*_n/this.demuxer.audioInfo.sampleRate,a=r/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,this.demuxer.lastKnownPacketIndex),new Li(n,"key",s,a,e,r)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getPacket(e,t){return y(this,null,function*(){I(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/_n,(this.demuxer.dataSize-1)/(_n*this.demuxer.audioInfo.blockSizeInBytes)));if(i<0)return null;const r=yield this.getPacketAtIndex(i,t);if(r)return r;if(0===i)return null;I(null===this.demuxer.reader.fileSize);let n=yield this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;n;){const e=yield this.getNextPacket(n,t);if(!e)break;n=e}return n})}getNextPacket(e,t){I(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/_n);return this.getPacketAtIndex(i+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Fn=e=>{const t=e.filePos,i=Lo(e,9),r=new Ke(i);if(4095!==r.readBits(12))return null;r.skipBits(1);if(0!==r.readBits(2))return null;const n=r.readBits(1),s=r.readBits(2)+1,a=r.readBits(4);if(15===a)return null;r.skipBits(1);const o=r.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);const l=r.readBits(13);r.skipBits(11);const c=r.readBits(2)+1;if(1!==c)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===n?e.filePos-=2:u=r.readBits(16),{objectType:s,samplingFrequencyIndex:a,channelConfiguration:o,frameLength:l,numberOfAacFrames:c,crcCheck:u,startPos:t}},An=1024;class Dn extends Ni{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.trackBackings=[],this.readingMutex=new V,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return y(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();I(this.firstFrameHeader),this.trackBackings=[new Mn(this)]}))()})}advanceReader(){return y(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,ol);if(Ce(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=dl(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(Ce(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Fn(e);if(!t)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&t.startPos+t.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=t);const i=Xe[t.samplingFrequencyIndex];I(void 0!==i);const r=An/i,n={timestamp:this.nextTimestampInSamples/i,duration:r,dataStart:t.startPos,dataSize:t.frameLength};this.loadedSamples.push(n),this.nextTimestampInSamples+=An,this.lastLoadedPos=t.startPos+t.frameLength})}getMimeType(){return y(this,null,function*(){return"audio/aac"})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return y(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0;for(;;){let t=this.reader.requestSlice(e,ol);if(Ce(t)&&(t=yield t),!t)break;const i=dl(t);if(!i)break;let r=this.reader.requestSlice(t.filePos,i.size);if(Ce(r)&&(r=yield r),!r)break;hl(r,i,this.metadataTags),e=t.filePos+i.size}return this.metadataTags}finally{e()}})}}class Mn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/An}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return null})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getName(){return null}getLanguageCode(){return ae}getCodec(){return"aac"}getInternalCodecId(){return I(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){I(this.demuxer.firstFrameHeader);const e=$e[this.demuxer.firstFrameHeader.channelConfiguration];return I(void 0!==e),e}getSampleRate(){I(this.demuxer.firstFrameHeader);const e=Xe[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return I(void 0!==e),e}getDisposition(){return h({},je)}getDecoderConfig(){return y(this,null,function*(){return I(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}})}getPacketAtIndex(e,t){return y(this,null,function*(){if(-1===e)return null;const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=Oi;else{let e=this.demuxer.reader.requestSlice(i.dataStart,i.dataSize);if(Ce(e)&&(e=yield e),!e)return null;r=Lo(e,i.dataSize)}return new Li(r,"key",i.timestamp,i.duration,e,i.dataSize)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getNextPacket(e,t){return y(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{const i=$(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}})}getPacket(e,t){return y(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=G(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1y(this,null,function*(){var e;let t=0;for(;;){let e=this.reader.requestSlice(t,ol);if(Ce(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const i=dl(e);if(!i)break;let r=this.reader.requestSlice(e.filePos,i.size);Ce(r)&&(r=yield r),I(r),hl(r,i,this.metadataTags),t=e.filePos+i.size}for(t+=4;null===this.reader.fileSize||ts.end-6)return{num:a.num,blockSize:a.blockSize,sampleRate:a.sampleRate,size:s.end-e,isLastFrame:!0};if(255===zo(s)){const t=s.filePos;if(zo(s)!==(1===this.blockingBit?249:248)){s.filePos=t;continue}s.skip(-2);const i=s.filePos-e,r=this.readFlacFrameHeader({slice:s,isFirstPacket:!1});if(!r){s.filePos=t;continue}if(0===this.blockingBit){if(r.num-a.num!==1){s.filePos=t;continue}}else if(r.num-a.num!==a.blockSize){s.filePos=t;continue}return{num:a.num,blockSize:a.blockSize,sampleRate:a.sampleRate,size:i,isLastFrame:!1}}}})}readFlacFrameHeader({slice:e,isFirstPacket:t}){const i=e.filePos,r=Lo(e,4),n=new Ke(r);if(32764!==n.readBits(15))return null;if(null===this.blockingBit){I(t);const e=n.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){I(!t);if(1!==n.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");I(!t);if(0!==n.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*u(2,e):6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?u(2,e):null)(n.readBits(4));if(!s)return null;I(this.audioInfo);const a=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(n.readBits(4),this.audioInfo.sampleRate);if(!a)return null;n.readBits(4),n.readBits(3);if(0!==n.readBits(1))return null;const o=(e=>{let t=0;const i=new Ke(Lo(e,1));for(;1===i.readBits(1);)t++;if(0===t)return i.readBits(7);const r=[],n=t-1,s=new Ke(Lo(e,n)),a=8-t-1;for(let o=0;oe|t<"uncommon-u16"===t?qo(e)+1:"uncommon-u8"===t?zo(e)+1:"number"===typeof t?t:(te(t),void I(!1)))(e,s),c=((e,t)=>"uncommon-u16"===t?qo(e):"uncommon-u16-10"===t?10*qo(e):"uncommon-u8"===t?zo(e):"number"===typeof t?t:null)(e,a);if(null===c)return null;if(c!==this.audioInfo.sampleRate)return null;const d=e.filePos-i,h=zo(e);e.skip(-d),e.skip(-1);const f=(e=>{let t=0;for(const i of e){t^=i;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(Lo(e,d));return h!==f?null:{num:o,blockSize:l,sampleRate:c}}advanceReader(){return y(this,null,function*(){yield this.readMetadata(),I(null!==this.lastLoadedPos),I(this.audioInfo);const e=this.lastLoadedPos,t=yield this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],r={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(r),t.isLastFrame&&(this.lastSampleLoaded=!0)})}}class On{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return ae}getTimeResolution(){return I(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return I(this.demuxer.audioInfo),0===this.demuxer.audioInfo.totalSamples?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}getDisposition(){return h({},je)}getDecoderConfig(){return y(this,null,function*(){return I(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}})}getPacket(e,t){return y(this,null,function*(){if(I(this.demuxer.audioInfo),e<0)return null;const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=G(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===i){yield this.demuxer.advanceReader();continue}const r=this.demuxer.loadedSamples[i],n=r.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(n+r.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(i,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);yield this.demuxer.advanceReader()}}finally{i()}})}getNextPacket(e,t){return y(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{const i=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{i()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}getPacketAtIndex(e,t){return y(this,null,function*(){const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=Oi;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(Ce(e)&&(e=yield e),!e)return null;r=Lo(e,i.byteSize)}I(this.demuxer.audioInfo);const n=i.blockOffset/this.demuxer.audioInfo.sampleRate,s=i.blockSize/this.demuxer.audioInfo.sampleRate;return new Li(r,"key",n,s,e,i.byteSize)})}getFirstPacket(e){return y(this,null,function*(){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)})}}const Ln=9e4,zn=u(2,33),Un=188,qn="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",Wn=new Set([133,134,162]),Hn=new Set;class Vn extends Ni{constructor(e){super(e),this.metadataPromise=null,this.elementaryStreams=[],this.trackBackingEntries=[],this.packetOffset=0,this.packetStride=-1,this.sectionEndPositions=[],this.seekChunkSize=5242880,this.minReferencePointByteDistance=-1,this.timestampWrapInfo=null,this.reader=e._reader}readMetadata(){return y(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){let e=this.reader.requestSlice(0,205);Ce(e)&&(e=yield e),I(e);const t=Lo(e,205);if(71===t[0]&&71===t[188])this.packetOffset=0,this.packetStride=Un;else if(71===t[0]&&71===t[204])this.packetOffset=0,this.packetStride=204;else{if(71!==t[4]||71!==t[196])throw new Error("Unreachable.");this.packetOffset=4,this.packetStride=192}this.minReferencePointByteDistance=256*this.packetStride;let i=this.packetOffset,r=null,n=!1,s=!1;for(;;){const e=yield this.readPacketHeader(i);if(!e)break;if(0===e.payloadUnitStartIndicator){i+=this.packetStride;continue}if(s&&!this.elementaryStreams.some(t=>t.pid===e.pid)){i+=this.packetStride;continue}const t=yield this.readSection(i,!0,!s);if(!t)break;const a=3,o=32;let l=!1;if(!s&&0!==t.pid){if(!(0===t.payload[0]&&0===t.payload[1]&&1===t.payload[2])){const e=new Ke(t.payload),i=e.readAlignedByte();e.skipBits(8*i);l=2===e.readBits(8)}}if(0!==t.pid||n)if(t.pid!==r&&!l||s){const e=this.elementaryStreams.find(e=>e.pid===t.pid);e:if(e&&!e.initialized){const i=Kn(this,t,!0);if(!i)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${e.pid}`);if(e.firstSection=t,e.canBeTrustedWithKeyPackets=1===t.randomAccessIndicator,this.input._initInput){const i=(yield this.input._initInput._getDemuxer()).elementaryStreams.find(i=>i.pid===t.pid&&i.info.codec===e.info.codec);if(i){e.info=i.info,e.initialized=!0;break e}}const r=new Yn(e,i);if("video"===e.info.type){for(;;){if(r.suppliedPacket=null,yield r.markNextPacket(),"avc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(e.info.avcCodecInfo=ht(r.suppliedPacket.data),!e.info.avcCodecInfo)continue;const t=e.info.avcCodecInfo.sequenceParameterSets[0];I(t);const i=gt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight;const n=i.pixelAspectRatio.num,s=i.pixelAspectRatio.den;n>0&&s>0&&(n>s?(e.info.squarePixelWidth=Math.round(e.info.width*n/s),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*s/n))),e.info.colorSpace={primaries:N[i.colourPrimaries],transfer:L[i.transferCharacteristics],matrix:U[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}if("hevc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(e.info.hevcCodecInfo=St(r.suppliedPacket.data),!e.info.hevcCodecInfo)continue;const t=e.info.hevcCodecInfo.arrays.find(e=>e.nalUnitType===it.SPS_NUT).nalUnits[0];I(t);const i=vt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight,i.pixelAspectRatio.num>i.pixelAspectRatio.den?(e.info.squarePixelWidth=Math.round(e.info.width*i.pixelAspectRatio.num/i.pixelAspectRatio.den),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*i.pixelAspectRatio.den/i.pixelAspectRatio.num)),e.info.colorSpace={primaries:N[i.colourPrimaries],transfer:L[i.transferCharacteristics],matrix:U[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}throw new Error("Unhandled.")}e.info.decoderConfig={codec:bi({width:e.info.width,height:e.info.height,codec:e.info.codec,codecDescription:null,colorSpace:e.info.colorSpace,avcType:1,avcCodecInfo:e.info.avcCodecInfo,hevcCodecInfo:e.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null,proresFormat:null}),codedWidth:e.info.width,codedHeight:e.info.height,colorSpace:e.info.colorSpace},e.info.width===e.info.squarePixelWidth&&e.info.height===e.info.squarePixelHeight||(e.info.decoderConfig.displayAspectWidth=e.info.squarePixelWidth,e.info.decoderConfig.displayAspectHeight=e.info.squarePixelHeight),e.initialized=!0}else{if(yield r.markNextPacket(),!r.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${e.pid}`);if("aac"===e.info.codec){const t=No.tempFromBytes(r.suppliedPacket.data),i=Fn(t);if(!i)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");e.info.aacCodecInfo={isMpeg2:!1,objectType:i.objectType},e.info.numberOfChannels=$e[i.channelConfiguration],e.info.sampleRate=Xe[i.samplingFrequencyIndex]}else if("mp3"===e.info.codec){const t=jo(No.tempFromBytes(r.suppliedPacket.data)),i=Ri(t,r.suppliedPacket.data.byteLength);if(!i.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");e.info.numberOfChannels=Mi(i.header.channel),e.info.sampleRate=i.header.sampleRate}else if("ac3"===e.info.codec){const t=jt(r.suppliedPacket.data);if(!t)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(3===t.fscod)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=Vt[t.acmod]+t.lfeon,e.info.sampleRate=Je[t.fscod]}else if("eac3"===e.info.codec){const t=$t(r.suppliedPacket.data);if(!t)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");const i=Gt(t);if(null===i)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=Qt(t),e.info.sampleRate=i}else{if("dts"!==e.info.codec)throw new Error("Unhandled.");{const t=si(r.suppliedPacket.data);if(!t)throw new Error("Invalid DTS audio stream; could not read frame header from first packet.");e.info.numberOfChannels=t.numberOfChannels,e.info.sampleRate=t.sampleRate,t.core&&(e.info.dtsFormat=t.hasExtensions?"dtsh":"dtsc")}}e.info.decoderConfig={codec:vi({codec:e.info.codec,codecDescription:null,aacCodecInfo:e.info.aacCodecInfo,dtsFormat:e.info.dtsFormat}),numberOfChannels:e.info.numberOfChannels,sampleRate:e.info.sampleRate},e.initialized=!0}}}else{const e=new Ke(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(12);const r=e.readBits(12);e.skipBits(43),e.readBits(13),e.skipBits(6);const n=e.readBits(10),l=e.pos+8*n;let c=!1;for(;e.pos=4){const t=e.readBits(32);c||(c=1212435798===t||1212436562===t)}e.pos=r}for(e.pos=l;8*(r+a)-e.pos>o;){const t=e.readBits(8);e.skipBits(3);const i=e.readBits(13);e.skipBits(6);const r=e.readBits(10),n=e.pos+8*r;let s=!1,a=!1,o=!1;for(;e.pos=4){const t=e.readBits(32);o||(o=1146376960===(4294967040&t))}e.pos=r}let l=null;const u=c&&Wn.has(t)?130:t;switch(u){case 27:case 36:l={type:"video",codec:27===t?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:case 130:case 138:{let e;e=3===u||4===u?"mp3":15===u?"aac":129===u?"ac3":135===u?"eac3":"dts",l={type:"audio",codec:e,decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:a?l={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:s?l={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:o&&(l={type:"audio",codec:"dts",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1});break;default:Hn.has(t)||(We._warn(`Note: MPEG-TS streams with stream_type 0x${t.toString(16)} are not currently supported.`),Hn.add(t))}l&&this.elementaryStreams.push({demuxer:this,pid:i,streamType:t,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:l,referencePesPackets:[]})}s=!0}else{const e=new Ke(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(14);const s=e.readBits(10);for(e.skipBits(40);8*(s+a)-e.pos>o;){const t=e.readBits(16);e.skipBits(3);const i=e.readBits(13);if(0!==t){if(null!==r)throw new Error("Only files with a single program are supported.");r=i}}if(null===r)throw new Error("Program Association Table must link to a Program Map Table.");n=!0}if(s&&this.elementaryStreams.every(e=>e.initialized))break;i+=this.packetStride}if(!s){if(!n)throw new Error("No Program Association Table found in the file.");throw new Error("No Program Map Table found in the file.")}for(const a of this.elementaryStreams)a.initialized&&("video"===a.info.type?this.trackBackingEntries.push(new $n(a)):this.trackBackingEntries.push(new Gn(a)))}))()})}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),this.trackBackingEntries})}getMetadataTags(){return y(this,null,function*(){return{}})}getMimeType(){return y(this,null,function*(){yield this.readMetadata();return(e=>{let t="video/MP2T";const i=[...new Set(e.filter(Boolean))];return i.length>0&&(t+=`; codecs="${i.join(", ")}"`),t})(yield Promise.all(this.trackBackingEntries.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null}))))})}readSection(e,t,i=!1){return y(this,null,function*(){let r=e,n=e;const s=[];let a,o=0,l=null,c=!0,u=0;for(;;){const e=yield this.readPacket(n);if(n+=this.packetStride,!e)break;if(l){if(e.pid!==l.pid){if(i)break;continue}if(1===e.payloadUnitStartIndicator)break}else{if(0===e.payloadUnitStartIndicator)break;l=e}const a=!!(2&e.adaptationFieldControl),d=!!(1&e.adaptationFieldControl);let h=0;if(a&&(h=1+e.body[0],e===l&&h>1&&(u=e.body[1]>>6&1)),d&&(0===h?(s.push(e.body),o+=e.body.byteLength):(s.push(e.body.subarray(h)),o+=e.body.byteLength-h)),r=n,!t&&o>=64){c=!1;break}if(-1!==$(this.sectionEndPositions,r,e=>e)){c=!1;break}}if(c){const e=G(this.sectionEndPositions,r,e=>e);this.sectionEndPositions.splice(e+1,0,r)}if(!l)return null;if(1===s.length)a=s[0];else{const e=s.reduce((e,t)=>e+t.length,0);a=new Uint8Array(e);let t=0;for(const i of s)a.set(i,t),t+=i.length}return{startPos:e,endPos:t?r:null,pid:l.pid,payload:a,randomAccessIndicator:u}})}readPacketHeader(e){return y(this,null,function*(){let t=this.reader.requestSlice(e,4);if(Ce(t)&&(t=yield t),!t)return null;if(71!==zo(t))throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const i=qo(t);return{payloadUnitStartIndicator:i>>14&1,pid:8191&i,adaptationFieldControl:zo(t)>>4&3}})}readPacket(e){return y(this,null,function*(){let t=this.reader.requestSlice(e,Un);if(Ce(t)&&(t=yield t),!t)return null;const i=Lo(t,Un);if(71!==i[0])throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const r=(i[1]<<8)+i[2];return{payloadUnitStartIndicator:r>>14&1,pid:8191&r,adaptationFieldControl:i[3]>>4&3,body:i.subarray(4)}})}normalizeTimestamp(e){if(!this.timestampWrapInfo){const t=54e5;this.timestampWrapInfo={reference:e-t,offset:e>=zn-t?-zn:zn}}const{reference:t,offset:i}=this.timestampWrapInfo;return i<0&&e>=t||i>0&&e{if(t.payload.byteLength<3)return null;const r=new Ke(t.payload);if(1!==r.readBits(24))return null;const n=r.readBits(8);if(r.skipBits(16),188===n||190===n||191===n||240===n||241===n||255===n||242===n||248===n)return null;r.skipBits(8);const s=r.readBits(2);r.skipBits(14);let a=null;if(2===s||3===s)a=0,r.skipBits(4),a+=r.readBits(3)*(1<<30),r.skipBits(1),a+=32768*r.readBits(15),r.skipBits(1),a+=r.readBits(15),a=e.normalizeTimestamp(a);else if(i)throw new Error(qn);return{sectionStartPos:t.startPos,sectionEndPos:t.endPos,pts:a,randomAccessIndicator:t.randomAccessIndicator}},Kn=(e,t,i)=>{I(null!==t.endPos);const r=jn(e,t,i);if(!r)return null;const n=new Ke(t.payload);n.skipBits(32);const s=n.readBits(16);n.skipBits(16);const a=n.readBits(8),o=n.pos+8*a;n.pos=o;const l=o/8;I(Number.isInteger(l));const c=t.payload.subarray(l,s>0?6+s:t.payload.byteLength);return f(h({},r),{data:c})};class Xn{constructor(e){this.elementaryStream=e,this.packetBuffers=new WeakMap,this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){const e=this.elementaryStream.demuxer,t=this.elementaryStream.info.type;let i=0;for(const r of e.trackBackingEntries)if(r.getType()===t&&i++,I(r instanceof Xn),r.elementaryStream===this.elementaryStream)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return ae}getDisposition(){return f(h({},je),{primary:!1})}getTimeResolution(){return Ln}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return y(this,null,function*(){return null})}getLiveRefreshInterval(){return y(this,null,function*(){return null})}createEncodedPacket(e,t,i){let r;return r=this.allPacketsAreKeyPackets()||1===e.randomAccessIndicator?"key":"delta",new Li(i.metadataOnly?Oi:e.data,r,e.pts/Ln,Math.max(t/Ln,0),e.sequenceNumber,e.data.byteLength)}getFirstPacket(e){return y(this,null,function*(){const t=this.elementaryStream.firstSection;I(t);const i=Kn(this.elementaryStream.demuxer,t,!0);I(i);const r=new Yn(this.elementaryStream,i),n=new Jn(this,r),s=yield n.readNext();if(!s)return null;const a=this.createEncodedPacket(s.packet,s.duration,e);return this.packetBuffers.set(a,n),this.packetSectionStarts.set(a,s.packet.sectionStartPos),a})}getNextPacket(e,t){return y(this,null,function*(){let i=this.packetBuffers.get(e);if(i){const r=yield i.readNext();if(!r)return null;this.packetBuffers.delete(e);const n=this.createEncodedPacket(r.packet,r.duration,t);return this.packetBuffers.set(n,i),this.packetSectionStarts.set(n,r.packet.sectionStartPos),n}const r=this.packetSectionStarts.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");const n=this.elementaryStream.demuxer,s=yield n.readSection(r,!0);I(s);const a=Kn(n,s,!0);I(a);const o=new Yn(this.elementaryStream,a);i=new Jn(this,o);const l=e.sequenceNumber;for(;;){const e=yield i.readNext();if(!e)return null;if(e.packet.sequenceNumber>l){const r=this.createEncodedPacket(e.packet,e.duration,t);return this.packetBuffers.set(r,i),this.packetSectionStarts.set(r,e.packet.sectionStartPos),r}}})}getNextKeyPacket(e,t){return y(this,null,function*(){let i=e;for(;;){if(i=yield this.getNextPacket(i,t),!i)return null;if("key"===i.type)return i}})}getPacket(e,t){return this.doPacketLookup(e,!1,t)}getKeyPacket(e,t){return this.doPacketLookup(e,!0,t)}doPacketLookup(e,t,i){return y(this,null,function*(){var r,n,s,a,o,l;const c=oe(e*Ln),u=this.elementaryStream.demuxer,{reader:d,seekChunkSize:h}=u,f=this.elementaryStream.pid,m=(e,t,i)=>y(this,null,function*(){let r=e;for(;re.pts),v=-1!==T?b[T]:null;if(v&&c-v.pts<45e3)k=v.sectionStartPos;else{let e=0;if(null!==d.fileSize){const t=Math.ceil(d.fileSize/h);if(t>1){let i=0,r=t-1;for(e=i;i<=r;){const t=Math.floor((i+r)/2),n=ue(t*h,u.packetStride)+g.sectionStartPos,s=n+h,a=yield m(n,s,!1);a?a.pesPacketHeader.pts<=c?(e=t,i=t+1):r=t-1:r=t-1}}}k=ue(e*h,u.packetStride)+g.sectionStartPos}const S=yield m(k,null!=(r=d.fileSize)?r:1/0,!1);let w=null!=(n=null==S?void 0:S.pesPacketHeader)?n:null;w||(w=g);const P=this.getReorderSize(),x=(e,t)=>y(this,null,function*(){var r,n;const s=yield u.readSection(e,!0);I(s);const a=Kn(u,s,!0);I(a);const o=new Yn(this.elementaryStream,a),l=new Jn(this,o);for(;;){if((null!=(n=null==(r=C(l.presentationOrderPackets))?void 0:r.pts)?n:-1/0)>=c)break;if(!(yield l.readNextPacket()))break}const d=ee(l.presentationOrderPackets,t);if(-1===d)return null;const h=l.presentationOrderPackets[d],f=0===d?0:h.pts-l.presentationOrderPackets[d-1].pts;for(;l.decodeOrderPackets[0]!==h;)l.decodeOrderPackets.shift();l.lastDuration=f;const m=yield l.readNext();I(m);const p=this.createEncodedPacket(m.packet,m.duration,i);return this.packetBuffers.set(p,l),this.packetSectionStarts.set(p,m.packet.sectionStartPos),p});if(!t||this.allPacketsAreKeyPackets()){e:for(;;){let e=w.sectionStartPos+u.packetStride;for(;;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,!1);if(t){const e=jn(u,t,!1);if(e&&null!==e.pts){if(e.pts>c)break e;w=e,Qn(this.elementaryStream,w);break}}}e+=u.packetStride}}e:for(let e=0;e=u.packetOffset;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,!1);if(t){const e=jn(u,t,!1);if(e&&null!==e.pts){w=e;break}}}e-=u.packetStride}}return x(w.sectionStartPos,e=>e.pts<=c)}{let e=k,t=null;const i=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let r=null;const n=e<=g.sectionStartPos;let k,y=null;if(n)k=g,y=p;else{const t=yield m(e,null!=(s=d.fileSize)?s:1/0,i);k=null!=(a=null==t?void 0:t.pesPacketHeader)?a:null,y=null!=(o=null==t?void 0:t.section)?o:null}let b=!1,T=0;e:for(;k&&!(null!==t&&k.sectionStartPos>=t);){if(k.pts<=c){let e;if(this.elementaryStream.canBeTrustedWithKeyPackets)e=1===k.randomAccessIndicator;else{I(y);const t=Kn(u,y,!0);I(t);const i=new Yn(this.elementaryStream,t);yield i.markNextPacket(),e=1===(null==(l=i.suppliedPacket)?void 0:l.randomAccessIndicator)}e&&(r=k)}if(k.pts>c&&(b=!0),b&&(T++,T>P))break;let e=k.sectionStartPos+u.packetStride;for(;;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,i);if(t){const e=jn(u,t,!1);if(e&&null!==e.pts){k=e,y=t,Qn(this.elementaryStream,k);break}}}e+=u.packetStride}}if(r){let e=r;if(0===T)e:for(let r=0;r=u.packetOffset;){const r=yield u.readPacketHeader(t);if(!r)break e;if(r.pid===f&&1===r.payloadUnitStartIndicator){const r=yield u.readSection(t,i);if(r){const t=jn(u,r,!1);if(t&&null!==t.pts){e=t;break}}}t-=u.packetStride}}const t=yield x(e.sectionStartPos,e=>e.pts<=c&&1===e.randomAccessIndicator);return I(t),t}if(n)return null;t=e,e=Math.max(ue(e-g.sectionStartPos-h,u.packetStride)+g.sectionStartPos,g.sectionStartPos)}}})}}class $n extends Xn{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}getColorSpace(){return y(this,null,function*(){return this.elementaryStream.info.colorSpace})}canBeTransparent(){return y(this,null,function*(){return!1})}getDecoderConfig(){return y(this,null,function*(){return I(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig})}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}}class Gn extends Xn{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}getDecoderConfig(){return y(this,null,function*(){return I(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig})}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}}const Qn=(e,t)=>{const i=e.referencePesPackets,r=G(i,t.sectionStartPos,e=>e.sectionStartPos);if(r>=0){const n=i[r];if(t.pts<=n.pts)return!1;const s=e.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-n.sectionStartPos=e?e:this.bufferData(e-t).then(()=>Math.min(this.endPos-this.currentPos,e))}getCurrentPesPacket(){const e=this.pesPackets[this.currentPesPacketIndex];return I(e),e}bufferData(e){return y(this,null,function*(){const t=this.endPos+e;for(;this.endPos=c)break;u=t;const r=o+u;if(u+3>=c){this.seekTo(r);break}const d=l[u+1],h=l[u+2],f=l[u+3];let m=0;if(0===d&&0===h&&1===f?m=4:0===d&&1===h&&(m=3),0===m){u++;continue}const p=r;null!=n||(n=p);const g=u+m,k=g+i,y=6;if(k+("avc"===e?y:1)>c){this.seekTo(r);break}const b=l[g];let T,v,S;if("avc"===e)T=ot(b),v=T===et.NON_IDR_SLICE||T===et.SLICE_DPA||T===et.IDR,S=T===et.SEI||T===et.SPS||T===et.PPS||T===et.AUD;else{T=Tt(b);if(((1&b)<<5|l[g+1]>>3)>0){u+=m;continue}v=T<=it.RASL_R||T>=it.BLA_W_LP&&T<=21,S=T>=it.VPS_NUT&&T<=37||T===it.PREFIX_SEI_NUT||T>=41&&T<=44||T>=48&&T<=55}let w=!1;if(v){let t;if("avc"===e){const e=l.subarray(k,k+y),i=B(new Ke(e));t=!s||i<=a,a=i}else t=l[k]>>7===1;t&&(s?w=!0:s=!0)}else S&&s&&(w=!0);if(w){const e=p-n;return this.seekTo(n),this.supplyPacket(e,0)}u+=m}if(rn){const e=this.endPos-n;return this.seekTo(n),this.supplyPacket(e,0)}}else{const n=r.info.codec,s=128;for(;;){let a=this.ensureBuffered(s);Ce(a)&&(a=yield a);const o=this.currentPos;for(;this.currentPos-o>6,a=63&i[4];if(3===n||a>37){this.seekTo(e+1);continue}const o=Kt[3*a+n];I(void 0!==o),this.seekTo(e),t=this.ensureBuffered(o),Ce(t)&&(t=yield t);const l=Math.round(13824e4/r.info.sampleRate);return this.supplyPacket(t,l)}if("eac3"===n){if(11!==s)continue;this.skip(-1);const e=this.currentPos;let t=this.ensureBuffered(5);if(Ce(t)&&(t=yield t),t<5)return;const i=this.readBytes(5);if(11!==i[0]||119!==i[1]){this.seekTo(e+1);continue}const n=2*(((7&i[2])<<8|i[3])+1),a=3===i[4]>>6?3:i[4]>>4&3,o=Xt[a];this.seekTo(e),t=this.ensureBuffered(n),Ce(t)&&(t=yield t);const l=256*o,c=Math.round(l*Ln/r.info.sampleRate);return this.supplyPacket(t,c)}if("dts"===n){if(127!==s&&100!==s)continue;this.skip(-1);const n=this.currentPos;let a=this.ensureBuffered(18);if(Ce(a)&&(a=yield a),a<18)return;const o=this.readBytes(18),l=oi(o);let c=l?null:li(o);if(!l&&!c){this.seekTo(n+1);continue}if(c&&!c.asset){this.seekTo(n);const t=Math.min(c.frameSize,4096);let i=this.ensureBuffered(t);Ce(i)&&(i=yield i),c=null!=(e=li(this.readBytes(i)))?e:c}let u=l?l.frameSize:c.frameSize;if(l){let e=4*Math.ceil(l.frameSize/4);for(;;){this.seekTo(n);const t=e+10;let i=this.ensureBuffered(t);if(Ce(i)&&(i=yield i),i=0)}readNext(){return y(this,null,function*(){if(0===this.decodeOrderPackets.length){if(!(yield this.readNextPacket()))return null}yield this.ensureCurrentPacketHasNext();const e=this.decodeOrderPackets[0],t=this.presentationOrderPackets.indexOf(e);let i;if(I(-1!==t),t===this.presentationOrderPackets.length-1)i=this.lastDuration;else{i=this.presentationOrderPackets[t+1].pts-e.pts,this.lastDuration=i}for(this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){const e=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(e))break;this.presentationOrderPackets.shift()}return{packet:e,duration:i}})}readNextPacket(){return y(this,null,function*(){if(this.reachedEnd)return!1;let e;return this.context.suppliedPacket||(yield this.context.markNextPacket()),e=this.context.suppliedPacket,this.context.suppliedPacket=null,e?(this.decodeOrderPackets.push(e),this.processPacketThroughReorderBuffer(e),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)})}ensureCurrentPacketHasNext(){return y(this,null,function*(){const e=this.decodeOrderPackets[0];for(I(e);;){const t=this.presentationOrderPackets.indexOf(e);if(-1!==t&&t<=this.presentationOrderPackets.length-2)break;if(!(yield this.readNextPacket()))break}})}processPacketThroughReorderBuffer(e){if(this.reorderBuffer.push(e),this.reorderBuffer.length>this.reorderSize){let e=0;for(let i=1;ie.pts-t.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}}const Zn="application/vnd.apple.mpegurl",es="#EXT-X-STREAM-INF:",ts="#EXT-X-I-FRAME-STREAM-INF:",is="#EXT-X-MEDIA:",rs="#EXTINF:",ns="#EXT-X-MAP:",ss="#EXT-X-KEY:",as="#EXT-X-MEDIA-SEQUENCE:",os="#EXT-X-BYTERANGE:",ls="#EXT-X-PROGRAM-DATE-TIME:",cs="#EXT-X-TARGETDURATION:",us="#EXT-X-PLAYLIST-TYPE:",ds=e=>0===e.length||e.startsWith("#")&&!e.startsWith("#EXT");class hs{constructor(e){this._attributes={};let t="",i="",r=!1,n=!1;for(let s=0;sy(this,null,function*(){const e=[];if(this.trackDeclarations){for(const t of this.trackDeclarations)if("video"===t.type){const i=De(e,e=>"video"===e.getType())+1;e.push(new ps(this,t,i))}else if("audio"===t.type){const i=De(e,e=>"audio"===e.getType())+1;e.push(new gs(this,t,i))}}else{if(this.firstSegment=yield this.getFirstSegment({}),!this.firstSegment)return[];const t=this.getInputForSegment(this.firstSegment),i=yield t.getTracks();for(const r of i)if("video"===r.type){const t=De(e,e=>"video"===e.getType())+1;e.push(new ps(this,{id:e.length+1,type:"video"},t))}else if("audio"===r.type){const t=De(e,e=>"audio"===e.getType())+1;e.push(new gs(this,{id:e.length+1,type:"audio"},t))}}return e}))()})}getFirstTimestampForInput(e){return y(this,null,function*(){const t=this.firstTimestampCache.get(e);if(void 0!==t)return t;const i=yield e.getFirstTimestamp();return this.firstTimestampCache.set(e,i),i})}getMediaOffset(e,t){return y(this,null,function*(){var i;const r=null!=(i=e.firstSegment)?i:e;let n;if(this.firstSegmentFirstTimestamps.has(r))n=this.firstSegmentFirstTimestamps.get(r);else{const e=this.getInputForSegment(r);n=yield this.getFirstTimestampForInput(e),this.firstSegmentFirstTimestamps.set(r,n)}if(r===e)return r.timestamp-n;const s=yield this.getFirstTimestampForInput(t),a=e.timestamp-r.timestamp,o=s-n-a;return Math.abs(o)<=Math.min(.25,a)?r.timestamp-n:e.timestamp-s})}dispose(){for(const e of this.inputCache)e.input.dispose();this.inputCache.length=0}}class ms{constructor(e,t,i){this.packetInfos=new WeakMap,this.hydrationPromise=null,this.firstInputTrack=null,this.firstSegment=null,this.segmentedInput=e,this.decl=t,this.number=i}hydrate(){var e;return null!=(e=this.hydrationPromise)?e:this.hydrationPromise=(()=>y(this,null,function*(){var e,t;if(null!=(e=this.segmentedInput).firstSegment||(e.firstSegment=yield this.segmentedInput.getFirstSegment({})),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let i=this.segmentedInput.firstSegment,r=null;for(;i;){const e=this.segmentedInput.getInputForSegment(i);if(r=null!=(t=(yield e.getTracks()).find(e=>e.type===this.decl.type&&e.number===this.number))?t:null,r)break;i=yield this.segmentedInput.getNextSegment(i,{})}if(!r)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=r,this.firstSegment=i}))()}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(e){return this.firstInputTrack?e():this.hydrate().then(e)}getDecoderConfig(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}getHasOnlyKeyPackets(){return this.delegate(()=>{var e,t,i;return null!=(i=null==(t=(e=this.firstInputTrack._backing).getHasOnlyKeyPackets)?void 0:t.call(e))?i:null})}getPairingMask(){return BigInt("1")}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}isRelativeToUnixEpoch(){return y(this,null,function*(){return yield this.hydrate(),I(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.unixEpochTimestamp===this.segmentedInput.firstSegment.timestamp})}getUnixTimeForTimestamp(e){return this.segmentedInput.getUnixTimeForTimestamp(e)}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(e){return this.segmentedInput.getDurationFromMetadata(e)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}createAdjustedPacket(e,t,i){return y(this,null,function*(){I(e.sequenceNumber>=0),I(this.segmentedInput.firstSegment);const r=yield this.segmentedInput.getMediaOffset(t,i.input),n=t.timestamp-this.segmentedInput.firstSegment.timestamp,s=e.clone({timestamp:ce(e.timestamp+r,yield i.getTimeResolution()),sequenceNumber:Math.floor(1e8*n)+e.sequenceNumber});return this.packetInfos.set(s,{segment:t,track:i,sourcePacket:e}),s})}getFirstPacket(e){return y(this,null,function*(){var t;yield this.hydrate(),I(this.firstInputTrack),I(this.firstSegment);let i=this.firstInputTrack,r=this.firstSegment;for(;;){if(i){const t=yield i._backing.getFirstPacket(e);if(t)return this.createAdjustedPacket(t,r,i)}if(r=yield this.segmentedInput.getNextSegment(r,{skipLiveWait:e.skipLiveWait}),!r)break;const n=this.segmentedInput.getInputForSegment(r);i=null!=(t=(yield n.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number))?t:null}return null})}getNextPacket(e,t){return this._getNextInternal(e,t,!1)}getNextKeyPacket(e,t){return this._getNextInternal(e,t,!0)}_getNextInternal(e,t,i){return y(this,null,function*(){const r=this.packetInfos.get(e);if(!r)throw new Error("Packet was not created from this track.");const n=i?yield r.track._backing.getNextKeyPacket(r.sourcePacket,t):yield r.track._backing.getNextPacket(r.sourcePacket,t);if(n)return this.createAdjustedPacket(n,r.segment,r.track);let s=r.segment;for(;;){const e=yield this.segmentedInput.getNextSegment(s,{skipLiveWait:t.skipLiveWait});if(!e)return null;const i=this.segmentedInput.getInputForSegment(e),n=(yield i.getTracks()).find(e=>e.type===r.track.type&&e.number===r.track.number);if(!n){s=e;continue}const a=yield n._backing.getFirstPacket(t);return a?this.createAdjustedPacket(a,e,n):null}})}getPacket(e,t){return this._getPacketInternal(e,t,!1)}getKeyPacket(e,t){return this._getPacketInternal(e,t,!0)}_getPacketInternal(e,t,i){return y(this,null,function*(){let r=yield this.segmentedInput.getSegmentAt(e,{skipLiveWait:t.skipLiveWait});if(!r)return null;for(yield this.hydrate();r;){const n=this.segmentedInput.getInputForSegment(r),s=(yield n.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number);if(!s){r=yield this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait});continue}const a=yield this.segmentedInput.getMediaOffset(r,n),o=e-a,l=i?yield s._backing.getKeyPacket(o,t):yield s._backing.getPacket(o,t);if(l)return this.createAdjustedPacket(l,r,s);r=yield this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait})}return null})}}class ps extends ms{getType(){return"video"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getCodedWidth(){return this.delegate(()=>this.firstInputTrack._backing.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.firstInputTrack._backing.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelHeight())}getRotation(){return this.delegate(()=>this.firstInputTrack._backing.getRotation())}getColorSpace(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getColorSpace())})}canBeTransparent(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.canBeTransparent())})}getDecoderConfig(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}}class gs extends ms{getType(){return"audio"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getNumberOfChannels(){return this.delegate(()=>this.firstInputTrack._backing.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.firstInputTrack._backing.getSampleRate())}getDecoderConfig(){return y(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}}Re();const ks=1/0;"undefined"!==typeof FinalizationRegistry&&new FinalizationRegistry(e=>{e()});class ys extends ze{constructor(){super(),this._disposed=!1,this._refCount=0,this._usedForHls=!1,this._refFinalizationRegistry=null,this._sizePromise=null,this.onread=null,"undefined"!==typeof FinalizationRegistry&&(this._refFinalizationRegistry=new FinalizationRegistry(e=>{e._decrementRefCount()}))}getSizeOrNull(){return y(this,null,function*(){var e;if(this._disposed)throw new Do;return null!=(e=this._sizePromise)?e:this._sizePromise=(()=>y(this,null,function*(){let e=this._getFileSize();return void 0!==e||(yield this._read(0,1,0,ks),e=this._getFileSize(),I(void 0!==e)),e}))()})}getSize(){return y(this,null,function*(){if(this._disposed)throw new Do;const e=yield this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e})}slice(e,t){if(!Number.isInteger(e)||e<0)throw new TypeError("offset must be a non-negative integer.");if(void 0!==t&&(!Number.isInteger(t)||t<0))throw new TypeError("length, when provided, must be a non-negative integer.");return new Ds(this,e,t)}_dispatchRead(e,t){var i;null==(i=this.onread)||i.call(this,e,t),this._emit("read",{start:e,end:t})}ref(){return new bs(this)}_incrementRefCount(){this._refCount++}_decrementRefCount(){this._refCount--,0===this._refCount&&(this._dispose(),this._disposed=!0)}}class bs{constructor(e){var t;if(this._freed=!1,e._disposed)throw new Error("Cannot ref a disposed source.");e._incrementRefCount(),null==(t=e._refFinalizationRegistry)||t.register(this,e,this),this._source=e}get source(){if(!this._source)throw new Error("Can't get source; ref has already been freed.");return this._source}get freed(){return this._freed}free(){var e;if(this._freed)throw new Error("Illegal operation: double free on SourceRef.");const t=this.source;I(t._refCount>0),t._decrementRefCount(),null==(e=t._refFinalizationRegistry)||e.unregister(this),this._freed=!0,this._source=null}[Symbol.dispose](){this.freed||this.free()}}class Ts extends ys{constructor(e,t){if("string"!==typeof e)throw new TypeError("rootPath must be a string.");if("function"!==typeof t)throw new TypeError("requestHandler must be a function.");super(),this.rootPath=e,this.requestHandler=t}_resolveRequest(e){const t=this.requestHandler(e),i=e=>{var t;if(!(e instanceof ys||e instanceof bs))throw new TypeError("requestHandler must return or resolve to a Source or SourceRef.");const i=e instanceof ys?e.ref():e;return(t=i.source)._usedForHls||(t._usedForHls=this._usedForHls),i};return Ce(t)?t.then(i):i(t)}}const vs=(e,t)=>e.path===t.path;class Ss extends Ts{constructor(){super(...arguments),this._root=null,this._rootRequest=null}_read(e,t,i,r){if(!this._root){if(!this._rootRequest){const e=this._resolveRequest({path:this.rootPath,isRoot:!0}),t=e=>{const t=e instanceof ys?e.ref():e;return this._root=t,this._rootRequest=null,t};Ce(e)?this._rootRequest=e.then(t):(t(e),I(this._root))}if(this._rootRequest)return this._rootRequest.then(n=>n.source._read(e,t,i,r))}return this._root.source._read(e,t,i,r)}_getFileSize(){if(this._root)return this._root.source._getFileSize()}_dispose(){this._root?this._root.free():this._rootRequest&&this._rootRequest.then(e=>e.free())}}const ws="undefined"!==typeof FinalizationRegistry?new FinalizationRegistry(e=>{e.cancel().catch(()=>{})}):null;class Ps extends ys{constructor(e,t={}){var i;if(!(e instanceof Blob))throw new TypeError("blob must be a Blob.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.maxCacheSize&&(!Fe(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.useStreamReader&&"boolean"!==typeof t.useStreamReader)throw new TypeError("options.useStreamReader, when provided, must be a boolean.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(),this._readers=new WeakMap,this._blob=e,this._options=t,this._orchestrator=new As({maxCacheSize:null!=(i=t.maxCacheSize)?i:8*u(2,20),maxWorkerCount:4,runWorker:this._runWorker.bind(this),onIdleWorkerRemoved:e=>{const t=this._readers.get(e);t&&(this._readers.delete(e),null==ws||ws.unregister(e),t.cancel().catch(()=>{}))},prefetchProfile:Fs.fileSystem,handleUnhandledError:t.handleUnhandledError}),this._orchestrator.fileSize=e.size}_getFileSize(){return this._orchestrator.fileSize}_read(e,t,i,r){return this._orchestrator.read(e,t,i,r)}_runWorker(e){return y(this,null,function*(){I(e.strictTarget);let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!Te()&&!1!==this._options.useStreamReader){t=this._blob.slice(e.currentPos).stream().getReader(),null==ws||ws.register(e,t,e)}else t=null;this._readers.set(e,t)}for(;e.currentPos{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))&&"undefined"!==typeof window){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(i instanceof Request?i.url:i,window.location.href).origin)}catch(r){}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return We._warn("Request will not be retried because a CORS error was suspected due to different origins. You can modify this behavior by providing your own function for the 'getRetryDelay' option."),null}return Math.min(u(2,e-2),16)},Cs=new Set;class Bs extends Ts{constructor(e,t={}){var i,r,n,s;if("string"!==typeof e&&!(e instanceof URL)&&!("undefined"!==typeof Request&&e instanceof Request))throw new TypeError("url must be a string, URL or Request.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.requestInit&&(!t.requestInit||"object"!==typeof t.requestInit))throw new TypeError("options.requestInit, when provided, must be an object.");if(void 0!==t.getRetryDelay&&"function"!==typeof t.getRetryDelay)throw new TypeError("options.getRetryDelay, when provided, must be a function.");if(void 0!==t.maxCacheSize&&(!Fe(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.parallelism&&(!Number.isInteger(t.parallelism)||t.parallelism<1))throw new TypeError("options.parallelism, when provided, must be a positive number.");if(void 0!==t.fetchFn&&"function"!==typeof t.fetchFn)throw new TypeError("options.fetchFn, when provided, must be a function.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(e instanceof Request?e.url:e instanceof URL?e.href:e,e=>new Bs(e.path,this._options)),this._offset=0,this._length=null,this._fileSizeDetermined=!1,this._sequentialBacking=null,this._url=e,this._options=t,this._getRetryDelay=null!=(i=t.getRetryDelay)?i:xs,this._requestInit=h({},t.requestInit);let a=null;if(null==(r=t.requestInit)?void 0:r.headers){const e=h({},ge(t.requestInit.headers)),i=Object.keys(e).find(e=>"range"===e.toLowerCase());void 0!==i&&(a=e[i],delete e[i],this._requestInit.headers=e)}if(e instanceof Request){const t=e.headers.get("Range");if(null!==t){null!=a||(a=t);const i=new Request(e);i.headers.delete("Range"),this._url=i}}if(null!==a){const e=_s(a);e&&(this._offset=e.offset,this._length=e.length)}this._orchestrator=new As({maxCacheSize:null!=(n=t.maxCacheSize)?n:64*u(2,20),maxWorkerCount:null!=(s=t.parallelism)?s:2,runWorker:this._runWorker.bind(this),prefetchProfile:Fs.network,handleUnhandledError:t.handleUnhandledError})}_getFileSize(){var e;if(!this._fileSizeDetermined)return null!==this._length?this._length:void 0;const t=this._sequentialBacking?this._sequentialBacking._endIndex:this._orchestrator.fileSize;return null===t?null!==this._length?this._length:null:se(t-this._offset,0,null!=(e=this._length)?e:1/0)}_read(e,t,i,r){var n;if(null!==this._length&&t>this._length)return null;const s=this._offset,a=this._sequentialBacking?this._sequentialBacking._read(s+e,s+t):this._orchestrator.read(s+e,s+t,Math.max(s+i,s),s+Math.min(r,null!=(n=this._length)?n:1/0)),o=e=>e?(e.offset-=this._offset,e):null;return Ce(a)?a.then(o):o(a)}_runWorker(e){return y(this,null,function*(){for(var t;;){const r=new AbortController,n=yield ke(null!=(t=this._options.fetchFn)?t:fetch,this._url,pe(this._requestInit,{headers:{Range:`bytes=${e.currentPos}-`},signal:r.signal}),this._getRetryDelay,()=>this._disposed);if(!n.ok)throw new Error(`Error fetching ${String(this._url)}: ${n.status} ${n.statusText}`);n.redirected&&(this.rootPath=n.url);e:if(null===this._orchestrator.fileSize&&(206===n.status||"basic"===n.type&&!n.headers.has("Content-Encoding"))){const t=n.headers.get("Content-Range");if(t){const e=/\/(\d+)/.exec(t);if(e){this._orchestrator.supplyFileSize(Number(e[1]));break e}}const i=n.headers.get("Content-Length");if(i){const t=206===n.status?e.currentPos:0;this._orchestrator.supplyFileSize(t+Number(i))}}if(this._fileSizeDetermined=!0,!n.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");if(206!==n.status){if(this._sequentialBacking)return void n.body.cancel();if(!this._usedForHls){const e=new URL(this._url instanceof Request?this._url.url:this._url,"undefined"!==typeof window?window.location.href:void 0);"null"===e.origin||e.pathname.endsWith(".m3u8")||e.pathname.endsWith(".m3u")||Cs.has(e.origin)||(We._warn(`HTTP server (origin ${e.origin}) did not respond to a range request with 206 Partial Content, meaning the resource will now be streamed sequentially, with old data being evicted from the cache. Reads into evicted regions will throw. To enable efficient media file streaming across a network, please make sure your server supports range requests. 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Because the HTTP server did not honor the range request, data can only be read sequentially, with old data being evicted from the cache. To fix this issue, either ensure your server responds to range requests with 206 Partial Content, or set maxCacheSize to Infinity in the UrlSource options. Note that the latter will store the entire file in the cache if needed, no matter how large.",s.on("read",({start:e,end:t})=>this._dispatchRead(e,t)),this._sequentialBacking=s;const a=new Set;for(const o of this._orchestrator.workers){for(const e of o.pendingSlices)a.add(e);o.aborted=!0,o.pendingSlices.length=0}for(const o of this._orchestrator.queuedReads)for(const e of o.pendingSlices)a.add(e);this._orchestrator.workers.length=0,this._orchestrator.queuedReads.length=0;for(const o of a){const e=s._read(o.start,o.start+o.bytes.length);Ce(e)?e.then(e=>{e?(I(e.offset===o.start),o.resolve(e.bytes)):o.resolve(null)},e=>o.reject(e)):(I(null===e),o.resolve(null))}}_dispose(){this._orchestrator.dispose(),this._sequentialBacking&&(this._sequentialBacking._disposed=!0,this._sequentialBacking._dispose())}}const Es=/^bytes=(\d+)-(\d*)$/,_s=e=>{const t=Es.exec(e.trim());if(!t)return null;const i=Number(t[1]),r=""===t[2]?null:Number(t[2]);return null!==r&&rthis._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const i=G(this._cache,e,e=>e.start),r=-1!==i?this._cache[i]:null;if(r&&r.start<=e&&t<=r.end)return{bytes:r.bytes,view:r.view,offset:r.start};let n=e;const s=new Uint8Array(t-e);if(-1!==i)for(let c=i;c=t)break;const r=Math.max(e,i.start);r>n&&this._throwDueToCacheMiss();const a=Math.min(t,i.end);rn&&this._throwDueToCacheMiss();const{promise:a,resolve:o,reject:l}=Y();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:l}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0;else{if(!this._handleUnhandledError)throw e;this._handleUnhandledError(e)}})),a}_throwDueToCacheMiss(){throw new Error(this._cacheMissErrorMessage)}_pull(){return y(this,null,function*(){for(null!=this._reader||(this._reader=this._stream.getReader());this._currentIndex0;){const e=this._cache[0];if(this._maxRequestedIndex-e.end<=this._maxCacheSize)break;this._cache.shift()}this._currentIndex+=t.byteLength}this._pulling=!1})}_dispose(){var e;for(const t of this._pendingSlices)t.reject(new Do);this._pendingSlices.length=0,this._cache.length=0,null==(e=this._reader)||e.cancel()}}const Fs={fileSystem:(e,t)=>{const i=u(2,16);return{start:e=Math.floor((e-i)/i)*i,end:t=Math.ceil((t+i)/i)*i}},network:(e,t,i)=>{const r=u(2,16);e=Math.max(0,Math.floor((e-r)/r)*r);for(const n of i){const i=8*u(2,20),r=Math.max((n.startPos+n.targetPos)/2,n.targetPos-i);if(Ee(e,t,r,n.targetPos)){const e=n.targetPos-n.startPos,r=Math.ceil((e+1)/i)*i,s=u(2,Math.ceil(Math.log2(e+1))),a=Math.min(s,r);t=Math.max(t,n.startPos+a)}}return{start:e,end:t=Math.max(t,e+Is)}}};class As{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1,this.queuedReads=[]}read(e,t,i,r){var n;I(!this.disposed);const s=this.options.prefetchProfile(e,t,this.workers),a=Math.max(s.start,i),o=Math.min(s.end,null!=(n=this.fileSize)?n:1/0,r);I(a<=e&&t<=o);let l=null;const c=G(this.cache,e,e=>e.start),u=-1!==c?this.cache[c]:null;u&&u.start<=e&&t<=u.end&&(u.age=this.nextAge++,l={bytes:u.bytes,view:u.view,offset:u.start});const d=G(this.cache,a,e=>e.start),h=l?null:new Uint8Array(t-e);let f=0,m=a;const p=[];if(-1!==d){for(let i=d;i=o)break;if(r.end<=a)continue;const n=Math.max(a,r.start),s=Math.min(o,r.end);if(I(n<=s),m=h.length&&(l={bytes:h,view:F(h),offset:e}),0===p.length)return I(l),l;const{promise:g,resolve:k,reject:y}=Y(),b=[];for(const v of p){const i=Math.max(e,v.start),r=Math.min(t,v.end);i===v.start&&r===v.end?b.push(v):ie.hole.start),i=-1!==t?this.queuedReads[t]:null;for(i&&v.start<=i.hole.end?(i.hole.end=Math.max(i.hole.end,v.end),i.strictTarget&&(i.strictTarget=e),T&&i.pendingSlices.push(T)):(t++,i={hole:{start:v.start,end:v.end},strictTarget:e,pendingSlices:T?[T]:[],age:this.nextAge++},this.queuedReads.splice(t,0,i));t+1i.hole.end)break;i.hole.end=Math.max(i.hole.end,e.hole.end),i.pendingSlices.push(...e.pendingSlices),i.strictTarget&&(i.strictTarget=e.strictTarget),i.age=Math.min(i.age,e.age),this.queuedReads.splice(t+1,1)}}}return l?g.catch(e=>{if(!this.disposed){if(!this.options.handleUnhandledError)throw e;this.options.handleUnhandledError(e)}}):(I(h),l=g.then(t=>t&&{bytes:t,view:F(t),offset:e})),l}checkHoleAgainstWorker(e,t,i){const r=u(2,17);if(Ee(t.start-r,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end);for(let t=0;t=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i{if(e.running=!1,e.pendingSlices.length>0)e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0;else if(!e.aborted&&!this.disposed){if(!this.options.handleUnhandledError)throw t;this.options.handleUnhandledError(t)}}).finally(()=>{if(!e.running&&this.queuedReads.length>0){let e=0;for(let r=1;re.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;at.start&&(t.start=s),t.end<=t.start&&(i.holes.splice(e,1),e--)}0===i.holes.length&&(i.resolve(i.bytes),e.pendingSlices.splice(a,1),a--)}for(let a=0;ae){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t=e){for(const e of i.pendingSlices)e.resolve(null);this.queuedReads.splice(t,1),t--}else if(i.hole.end>e){i.hole.end=e,i.strictTarget=!0;for(let t=0;t=e&&(r.resolve(null),i.pendingSlices.splice(t,1),t--)}}}}signalWorkerStoppedRunning(e){e.running=!1,e.aborted||(e.pendingSlices.length=0)}onWorkerFinished(e){var t,i;const r=this.workers.indexOf(e);I(-1!==r),e.running=!1,this.workers.splice(r,1),null==(i=(t=this.options).onIdleWorkerRemoved)||i.call(t,e),null===this.fileSize&&this.supplyFileSize(e.currentPos);for(const n of e.pendingSlices)n.resolve(null)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=G(this.cache,e.start,e=>e.start)+1;if(t>0){const i=this.cache[t-1];if(i.end>=e.end)return;if(i.end>e.start){const r=new Uint8Array(e.end-i.start);r.set(i.bytes,0),r.set(e.bytes,e.start-i.start),this.currentCacheSize+=e.end-i.end,i.bytes=r,i.view=F(r),i.end=e.end,t--,e=i}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let i=t+1;i=t.end){this.cache.splice(i,1),this.currentCacheSize-=t.bytes.length,i--;continue}const r=new Uint8Array(t.end-e.start);r.set(e.bytes,0),r.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=r,e.view=F(r),e.end=t.end,this.cache.splice(i,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let i=1;ithis._length)return null;const n=this._baseSource._read(this._offset+e,this._offset+t,this._offset+i,this._offset+r),s=e=>e?(e.offset-=this._offset,e):null;return Ce(n)?n.then(s):s(n)}_dispose(){var e;null==(e=this._ref)||e.free()}ref(){return null!=this._ref||(this._ref=this._baseSource.ref()),super.ref()}}var Ms=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,n;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(n=r)}if("function"!==typeof r)throw new TypeError("Object 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i.requestEntireFile();I(r),l=tl(r,r.length,{ignore:ds}),t.source instanceof Ts&&(this.rootPath=t.source.rootPath)}catch(R){e.error=R,e.hasError=!0}finally{Ns(e)}}const c=!1!==(null==(e=this.input._formatOptions.hls)?void 0:e.offsetTimestampsByDateTime);let d=!1,m=0,p=null,g=null,k=null,y=0,b=null,T=null,v=null,S=null,w=null,P=null,x=!1,B=null!=(t=C(this.segments))?t:null;const E=e=>{const t=e.indexOf("@"),i=Number(-1===t?e:e.slice(0,t));if(!Number.isInteger(i)||i<0)throw new Error(`Invalid #EXT-X-BYTERANGE length '${e}'.`);let r=null;if(-1!==t&&(r=Number(e.slice(t+1)),!Number.isInteger(r)||r<0))throw new Error(`Invalid #EXT-X-BYTERANGE offset '${e}'.`);return{length:i,offset:r}},_=e=>{y=e,B&&(I(null!==B.sequenceNumber),B.sequenceNumber0&&null!==P&&(m=y*P),x=!0);const t=e.slice(8),i=t.indexOf(","),r=-1===i?t:t.slice(0,i),n=Number(r);if(!Number.isFinite(n)||n<0)throw new Error(`Invalid #EXTINF tag duration '${r}'.`);g=n}else if(e.startsWith(ns)){const t=new hs(e.slice(11)),i=t.get("uri");if(!i)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");const r=t.get("byterange");let a=null;if(null!==r&&(a=E(r)),a&&null===a.offset)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!B){const e={path:Ae(this.rootPath,i),offset:null!=(n=null==a?void 0:a.offset)?n:0,length:null!=(s=null==a?void 0:a.length)?s:null};if("AES-128"===(null==k?void 0:k.method)&&!k.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");T={timestamp:m,unixEpochTimestamp:p,firstSegment:null,sequenceNumber:null,location:e,duration:0,encryption:k,initSegment:null,lastProgramDateTimeSeconds:w}}g=null,null===S?v=null:S=null}else if(e.startsWith(ss)){const t=new hs(e.slice(11)),i=t.get("method");if("NONE"===i)k=null;else if("AES-128"===i){const e=t.get("uri");if(!e)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let i=null;const r=t.get("iv");if(r){if(!Os.test(r))throw new Error(`Unsupported IV format '${r}'.`);let e=r.slice(2);e=e.padStart(32,"0"),i=new Uint8Array(Xi);for(let t=0;t=8&&112===i[4]&&115===i[5]&&115===i[6]&&104===i[7]){const e=F(i).getUint32(0);r=zi(i.subarray(8,Math.min(e,i.length)))}}k={method:i,psshBox:r}}}}else if(e.startsWith(as)){const t=e.slice(22),i=Number(t);if(!Number.isInteger(i)||i<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${t}'.`);_(i)}else if(e.startsWith(os)){const t=E(e.slice(17));if(null===t.offset){if(null===v)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");t.offset=v}S=t,v=t.offset+t.length}else if(e.startsWith(ls)){if(B)continue;const t=e.slice(25),i=Date.parse(t);if(!Number.isFinite(i))continue;const r=i/1e3;if(w===r)continue;if(null===w&&this.segments.length>0){const e=C(this.segments),t=r-(e.timestamp+e.duration);for(const i of this.segments)i.unixEpochTimestamp=i.timestamp+t,c&&(i.timestamp=i.unixEpochTimestamp)}w=r,p=r,c&&(m=r)}else if("#EXT-X-DISCONTINUITY"===e)b=null;else if(e.startsWith(cs)){const t=e.slice(22),i=Number(t);if(!Number.isFinite(i)||i<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${t}'.`);this.refreshInterval=i,P=i}else{if("#EXT-X-ENDLIST"===e){this.streamHasEnded=!0;break}if(e.startsWith(us)){"vod"===e.slice(21).toLowerCase()&&(this.streamHasEnded=!0)}}}else{if("#EXTM3U"!==e)throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");d=!0}}if(!d)throw new Error("Invalid M3U8 file; no #EXTM3U header.")})}getFirstSegment(){return y(this,null,function*(){var e;return 0===this.segments.length&&(yield this.runUpdateSegments()),null!=(e=this.segments[0])?e:null})}getSegmentAt(e,t){return y(this,null,function*(){0===this.segments.length&&(yield this.runUpdateSegments());let i=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){const r=G(this.segments,e,e=>e.timestamp);if(-1===r)return null;if(r0;for(;;){if(re.segment===r);if(n)return n.age=this.nextInputCacheAge++,n.input;let s=null;(r.initSegment||r.firstSegment)&&(s=this.getInputForSegment(null!=(t=r.initSegment)?t:r.firstSegment));const a=f(h({},this.input._formatOptions),{isobmff:f(h({},this.input._formatOptions.isobmff),{resolveKeyId:(null==(i=this.input._formatOptions.isobmff)?void 0:i.resolveKeyId)&&(e=>{if(!r.encryption||"SAMPLE-AES"!==r.encryption.method&&"SAMPLE-AES-CTR"!==r.encryption.method||!r.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(e);let t=e.psshBoxes;const{psshBox:i}=r.encryption;return null!==i.keyIds&&!i.keyIds.includes(e.keyId)||t.some(e=>Ui(e,i))||(t=[...t,i]),this.input._formatOptions.isobmff.resolveKeyId(f(h({},e),{psshBoxes:t}))})})}),o=new Fo({source:new Ss(r.location.path,e=>y(this,null,function*(){var t,i;I(e.isRoot);const n=f(h({},e),{isRoot:!1});let s;const a=r.location.offset>0||null!==r.location.length;if(r.encryption&&"SAMPLE-AES"!==r.encryption.method&&"SAMPLE-AES-CTR"!==r.encryption.method)if("AES-128"===r.encryption.method){const e=r.encryption;I(e.iv);let t=yield this.input._getSourceCached(n);if(a){const e=t.source.slice(r.location.offset,null!=(i=r.location.length)?i:void 0).ref();t.free(),t=e}const o=((e,t,i)=>{let r=!1,n=0;const s=u(2,16),a=new ir;return new ReadableStream({pull:o=>y(null,null,function*(){r||(a.init(yield t()),r=!0);const l=s+16;let c=e.requestSliceRange(n,0,l);if(Ce(c)&&(c=yield c),!c||0===c.length)throw new Error("Invalid ciphertext.");const u=c.length;if(u%16!==0)throw new Error("Invalid ciphertext.");const d=u===l?u-16:u,h=Lo(c,d),f=new Uint8Array(d);for(let e=0;e16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");const t=f.subarray(0,d-e);o.enqueue(t),o.close(),i()}}),cancel:()=>{i()}})})(new Mo(t.source),()=>y(this,null,function*(){const t={stack:[],error:void 0,hasError:!1};try{const i=Ms(t,yield this.input._getSourceCached({path:e.keyUri,isRoot:!1},Ro),!1),r=new Mo(i.source),n=yield r.requestSlice(0,Xi);if(!n)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");return{key:Lo(n,Xi),iv:e.iv}}catch(i){t.error=i,t.hasError=!0}finally{Ns(t)}}),()=>{t.free()});s=new Rs(o).ref()}else I(!1);else if(s=yield this.input._getSourceCached(n),a){const e=s.source.slice(r.location.offset,null!=(t=r.location.length)?t:void 0).ref();s.free(),s=e}return s})),formats:this.input._formats.filter(e=>!(e instanceof sa)),initInput:null!=s?s:void 0,formatOptions:a});o._onFormatDetermined=e=>{var t,i;if(("SAMPLE-AES"===(null==(t=r.encryption)?void 0:t.method)||"SAMPLE-AES-CTR"===(null==(i=r.encryption)?void 0:i.method))&&!e._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:r,input:o,age:this.nextInputCacheAge++});if(this.inputCache.length>4){const e=Me(this.inputCache,e=>e.age);I(-1!==e),this.inputCache.splice(e,1)}return o}getLiveRefreshInterval(){return y(this,null,function*(){return 0===this.getRemainingWaitTimeMs()&&(yield this.runUpdateSegments()),this.streamHasEnded?null:this.refreshInterval})}}class Us extends Ni{constructor(e){super(e),this.metadataPromise=null,this.trackBackings=null,this.internalTracks=null,this.segmentedInputs=[],this.hasMasterPlaylist=!0}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>y(this,null,function*(){I(this.input._rootSource instanceof Ts);const e=yield this.input._reader.requestEntireFile();I(e);const t=tl(e,e.length,{ignore:ds}),{rootPath:i}=this.input._rootSource,r=[],n=[];for(let u=1;u"video"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],a=[...new Set(n.filter(e=>"audio"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],o=yield Promise.all(r.map((e,t)=>y(this,null,function*(){var r,o,l,c;const u=[],d=e.attributes.get("codecs");let h;if(d)h=d.split(",").map(e=>e.trim());else{const t=this.getSegmentedInputForPath(e.fullPath),i=yield t.getTrackBackings(),r=yield Promise.all(i.map(e=>y(this,null,function*(){return{track:e,codec:yield e.getCodec()}})));h=yield Promise.all(r.filter(e=>null!==e.codec).map(e=>e.track.getDecoderConfig().then(e=>e.codec)))}const f=e.attributes.get("video"),m=e.attributes.get("audio"),p=h.some(e=>ui.includes(Ii(e))),g=h.some(e=>hi.includes(Ii(e)));if(null!==f&&!p){if(!s.includes(f))throw new Error(`Invalid M3U8 file; variant stream references video group "${f}" which is not defined in any #EXT-X-MEDIA tags.`);const e=n.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===f&&"video"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Ae(i,t),n=this.getSegmentedInputForPath(r),s=(yield n.getTrackBackings()).find(e=>"video"===e.getType());if(!s||null===(yield s.getCodec()))break e;const a=yield s.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null});I(null!==a),h.push(a)}}if(null!==m&&!g){if(!a.includes(m))throw new Error(`Invalid M3U8 file; variant stream references audio group "${m}" which is not defined in any #EXT-X-MEDIA tags.`);const e=n.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===m&&"audio"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Ae(i,t),n=this.getSegmentedInputForPath(r),s=(yield n.getTrackBackings()).find(e=>"audio"===e.getType());if(!s||null===(yield s.getCodec()))break e;const a=yield s.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null});I(null!==a),h.push(a)}}h=[...new Set(h)];let k=null,b=null;const T=e.attributes.getAsNumber("bandwidth");I(null!==T);const v=e.attributes.getAsNumber("average-bandwidth"),S=e.attributes.get("name");for(const i of h){const d=Ii(i);if(null!==d)if(ui.includes(d)){if(null!==k)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");k=i;const a=e.attributes.get("video");if(null===a){const i=e.attributes.get("resolution");let r=null,n=null;if(i){const e=i.match(/^(\d+)x(\d+)$/);e&&(r=Number(e[1]),n=Number(e[2]))}u.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:ae,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:k,pairingMask:BigInt("1")<0?r:null}})}else{if(!a.includes(r))throw new Error(`Invalid M3U8 file; variant stream references audio group "${r}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of n){const n=i.attributes.get("group-id"),s=i.attributes.get("type");if(n!==r||"audio"!==s.toLowerCase())continue;const a=null!=(l=i.attributes.get("channels"))?l:e.attributes.get("channels"),o=null!==a?Number(a.split("/")[0]):null;u.push({id:-1,demuxer:this,backingTrack:null,default:Vs(i.attributes),autoselect:Vs(i.attributes)||js(i.attributes),languageCode:Ks(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:null!=(c=i.fullPath)?c:e.fullPath,fullCodecString:b,pairingMask:BigInt("1")<0?o:null}})}}}}return u}))),l=[],c=e=>{var t,i;const r=l.find(t=>t.fullPath===e.fullPath&&t.info.type===e.info.type);r?(r.pairingMask|=e.pairingMask,r.default||(r.default=e.default),r.autoselect||(r.autoselect=e.autoselect),r.lineNumber=Math.min(r.lineNumber,e.lineNumber),null!==e.peakBitrate&&(r.peakBitrate=Math.max(null!=(t=r.peakBitrate)?t:-1/0,e.peakBitrate)),null!==e.averageBitrate&&(r.averageBitrate=Math.max(null!=(i=r.averageBitrate)?i:-1/0,e.averageBitrate)),r.languageCode===ae&&(r.languageCode=e.languageCode)):(e.id=l.length+1,l.push(e))};for(const u of o)for(const e of u)c(e);l.sort((e,t)=>e.lineNumber-t.lineNumber),this.trackBackings=[];for(const u of l)"video"===u.info.type?this.trackBackings.push(new Ws(u)):this.trackBackings.push(new Hs(u));this.internalTracks=l}))()}getTrackBackings(){return y(this,null,function*(){return yield this.readMetadata(),I(this.trackBackings),this.trackBackings})}getSegmentedInputForPath(e){let t=this.segmentedInputs.find(t=>t.path===e);if(t)return t;let i=null;if(this.internalTracks){i=this.internalTracks.filter(t=>t.fullPath===e).map(e=>({id:e.id,type:e.info.type}))}return t=new zs(this,e,i,null),this.segmentedInputs.push(t),t}getMetadataTags(){return y(this,null,function*(){return{}})}getMimeType(){return y(this,null,function*(){return Zn})}dispose(){if(this.segmentedInputs){for(const e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}}class qs{constructor(e){this.internalTrack=e,this.hydrationPromise=null}hydrate(){var e;return null!=(e=this.hydrationPromise)?e:this.hydrationPromise=(()=>y(this,null,function*(){const e=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath);let t=null;const i=(yield e.getTrackBackings()).filter(e=>e.getType()===this.getType());if(1===i.length)t=i[0];else if(this instanceof Ws){for(const r of i)if((yield r.getCodec())===this.getCodec()){t=r;break}}else{I(this instanceof Hs);for(const e of i)if((yield e.getCodec())===this.getCodec()){t=e;break}}if(!t)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=t}))()}delegate(e){return this.internalTrack.backingTrack?e():this.hydrate().then(e)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return f(h({},je),{default:this.internalTrack.autoselect,primary:this.internalTrack.default})}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){I(this.internalTrack.demuxer.internalTracks);const e=this.internalTrack.info.type;let t=0;for(const i of this.internalTrack.demuxer.internalTracks)if(i.info.type===e&&t++,i===this.internalTrack)break;return t}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getUnixTimeForTimestamp(e){return this.delegate(()=>this.internalTrack.backingTrack.getUnixTimeForTimestamp(e))}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}getDurationFromMetadata(e){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(e)})}getLiveRefreshInterval(){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()})}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}getFirstPacket(e){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(e)})}getPacket(e,t){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getPacket(e,t)})}getKeyPacket(e,t){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(e,t)})}getNextPacket(e,t){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getNextPacket(e,t)})}getNextKeyPacket(e,t){return y(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(e,t)})}}class Ws extends qs{constructor(e){super(e)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return Ii(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}getColorSpace(){return y(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.getColorSpace()})}canBeTransparent(){return y(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.canBeTransparent()})}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}getDecoderConfig(){return y(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.getDecoderConfig()})}}class Hs extends qs{constructor(e){super(e)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return Ii(this.internalTrack.fullCodecString)}getNumberOfChannels(){return null!==this.internalTrack.info.numberOfChannels?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}getDecoderConfig(){return y(this,null,function*(){return yield this.hydrate(),this.backingAudioTrack.getDecoderConfig()})}}const Vs=e=>{const t=e.get("default");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},js=e=>{const t=e.get("autoselect");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},Ks=e=>{if(null===e)return ae;const t=e.split("-")[0];return t||ae};class Xs{constructor(){this._isIsobmff=!1}}class $s extends Xs{constructor(){super(...arguments),this._isIsobmff=!0}_getMajorBrand(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,12);if(Ce(t)&&(t=yield t),!t)return null;t.skip(4);const i=el(t,4);return"ftyp"!==i&&"styp"!==i?null:el(t,4)})}_createDemuxer(e){return new rr(e)}}class Gs extends $s{_canReadInput(e){return y(this,null,function*(){const t=yield this._getMajorBrand(e);if(null!==t)return"qt "!==t;let i=0;for(let r=0;r<10;r++){let t=e._reader.requestSlice(i,8);if(Ce(t)&&(t=yield t),!t)return!1;let r=jo(t),n=8;if(1===r){let t=e._reader.requestSlice(i+8,8);if(Ce(t)&&(t=yield t),!t)return!1;r=Go(t),n=16}if(r8)return!1;if(Er(i,r)!==vr.EBML)return!1;const n=Rr(i);if("number"!==typeof n)return!1;let s=e._reader.requestSlice(i.filePos,n);if(Ce(s)&&(s=yield s),!s)return!1;const a=i.filePos;for(;s.filePos<=a+n-2;){const e=Fr(s);if(!e)break;const{id:i,size:r}=e,n=s.filePos;if(void 0===r)return!1;switch(i){case vr.EBMLVersion:if(1!==Er(s,r))return!1;break;case vr.EBMLReadVersion:if(1!==Er(s,r))return!1;break;case vr.DocType:if(Ar(s,r)!==t)return!1;break;case vr.DocTypeVersion:if(Er(s,r)>4)return!1}s.filePos=n+r}return!0})}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new ln(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class Js extends Ys{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class Zs extends Xs{_canReadInput(e){return y(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,ol);if(Ce(i)&&(i=yield i),!i)break;const r=dl(i);if(!r)break;t=i.filePos+r.size}const i=yield hn(e._reader,t,t+4096);if(!i)return!1;const r=i.header,n=_i(r.mpegVersionId,r.channel);let s=e._reader.requestSlice(i.startPos+n,4);if(Ce(s)&&(s=yield s),!s)return!1;const a=jo(s);if(a===Bi||a===Ei)return!0;t=i.startPos+i.header.totalSize;const o=yield hn(e._reader,t,t+4);if(!o)return!1;const l=o.header;return r.channel===l.channel&&r.sampleRate===l.sampleRate})}_createDemuxer(e){return new fn(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class ea extends Xs{_canReadInput(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,12);if(Ce(t)&&(t=yield t),!t)return!1;const i=el(t,4);if("RIFF"!==i&&"RIFX"!==i&&"RF64"!==i)return!1;t.skip(4);return"WAVE"===el(t,4)})}_createDemuxer(e){return new En(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class ta extends Xs{_canReadInput(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,4);return Ce(t)&&(t=yield t),!!t&&"OggS"===el(t,4)})}_createDemuxer(e){return new wn(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class ia extends Xs{_canReadInput(e){return y(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,ol);if(Ce(i)&&(i=yield i),!i)break;const r=dl(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSlice(t,4);return Ce(i)&&(i=yield i),!!i&&"fLaC"===el(i,4)})}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new Nn(e)}}class ra extends Xs{_canReadInput(e){return y(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,ol);if(Ce(i)&&(i=yield i),!i)break;const r=dl(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSliceRange(t,7,9);if(Ce(i)&&(i=yield i),!i)return!1;const r=Fn(i);if(!r)return!1;if(t+=r.frameLength,i=e._reader.requestSliceRange(t,7,9),Ce(i)&&(i=yield i),!i)return!1;const n=Fn(i);return!!n&&(r.objectType===n.objectType&&r.samplingFrequencyIndex===n.samplingFrequencyIndex&&r.channelConfiguration===n.channelConfiguration)})}_createDemuxer(e){return new Dn(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}class na extends Xs{_canReadInput(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,205);if(Ce(t)&&(t=yield t),!t)return!1;const i=Lo(t,205);return 71===i[0]&&71===i[188]||(71===i[0]&&71===i[204]||71===i[4]&&71===i[196])})}_createDemuxer(e){return new Vn(e)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}}class sa extends Xs{_canReadInput(e){return y(this,null,function*(){let t=e._reader.requestSlice(0,7);if(Ce(t)&&(t=yield t),!t)return!1;if(!("#EXTM3U"===el(t,7)))return!1;if(!(e._rootSource instanceof Ts))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return e._rootSource._usedForHls=!0,!0})}_createDemuxer(e){return new Us(e)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return Zn}}const aa=new Gs,oa=new Qs,la=new Ys,ca=new Js,ua=new Zs,da=new ea,ha=new ta,fa=new ra,ma=new ia,pa=new na,ga=new sa,ka=[ga,aa,oa,la,ca,da,ha,ma,ua,fa,pa],ya=[ga,aa,oa,ua,fa,pa];var ba=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,n=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===n)return n=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return n|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else n|=1}catch(a){i(a)}if(1===n)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});Re();let Ta=-1/0,va=-1/0,Sa=null;"undefined"!==typeof FinalizationRegistry&&(Sa=new FinalizationRegistry(e=>{const t=performance.now();"video"===e.type?(t-Ta>=1e3&&(We._error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),Ta=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-va>=1e3&&(We._error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),va=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));class wa{constructor(){this._referenceCount=0,this._lastAllocationBuffer=null}}const Pa=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],Ia=new Set(Pa);class xa{get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(me*this.timestamp)}get microsecondDuration(){return Math.trunc(me*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){var i,r,n,s,a,o,l,c,u,d,h,f,m,p,g,k,y,b,T,v,S,w,P,I,x,C,B,E,_,F,A;if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0===t.format||!Ia.has(t.format))throw new TypeError("init.format must be one of: "+Pa.join(", "));if(!Number.isInteger(t.codedWidth)||t.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(t.codedHeight)||t.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.layout){if(!Array.isArray(t.layout))throw new TypeError("init.layout, when provided, must be an array.");for(const e of t.layout){if(!e||"object"!==typeof e||Array.isArray(e))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(e.offset)||e.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(e.stride)||e.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==t.visibleRect&&Oe(t.visibleRect,"init.visibleRect"),void 0!==t.displayWidth&&(!Number.isInteger(t.displayWidth)||t.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(void 0!==t.displayHeight&&(!Number.isInteger(t.displayHeight)||t.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(void 0!==t.displayWidth!==(void 0!==t.displayHeight))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this.format=t.format,this.rotation=null!=(i=t.rotation)?i:0,this.timestamp=t.timestamp,this.duration=null!=(r=t.duration)?r:0;const m=null!=(n=t.layout)?n:Na(t.format,t.codedWidth,t.codedHeight);let p=null!=(s=t.colorSpace)?s:null;null===p&&(p="RGBA"===this.format||"RGBX"===this.format||"BGRA"===this.format||"BGRX"===this.format?{primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:{primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.visibleRect={left:null!=(o=null==(a=t.visibleRect)?void 0:a.left)?o:0,top:null!=(c=null==(l=t.visibleRect)?void 0:l.top)?c:0,width:null!=(d=null==(u=t.visibleRect)?void 0:u.width)?d:t.codedWidth,height:null!=(f=null==(h=t.visibleRect)?void 0:h.height)?f:t.codedHeight},void 0!==t.displayWidth?(this.squarePixelWidth=this.rotation%180===0?t.displayWidth:t.displayHeight,this.squarePixelHeight=this.rotation%180===0?t.displayHeight:t.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height),this._data=t._doNotCopy?R(e):R(e).slice(),this._layout=m,this.colorSpace=new Ra(p)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==(null==t?void 0:t.rotation)&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==(null==t?void 0:t.timestamp)&&!Number.isFinite(null==t?void 0:t.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==(null==t?void 0:t.duration)&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");void 0!==(null==t?void 0:t.visibleRect)&&Oe(t.visibleRect,"init.visibleRect"),this._data=e,this._layout=null,this.format=e.format,this.visibleRect={left:null!=(p=null==(m=e.visibleRect)?void 0:m.x)?p:0,top:null!=(k=null==(g=e.visibleRect)?void 0:g.y)?k:0,width:null!=(b=null==(y=e.visibleRect)?void 0:y.width)?b:e.codedWidth,height:null!=(v=null==(T=e.visibleRect)?void 0:T.height)?v:e.codedHeight},this.rotation=null!=(S=null==t?void 0:t.rotation)?S:0,this.squarePixelWidth=e.displayWidth,this.squarePixelHeight=e.displayHeight,this.timestamp=null!=(w=null==t?void 0:t.timestamp)?w:e.timestamp/1e6,this.duration=null!=(I=null==t?void 0:t.duration)?I:(null!=(P=e.duration)?P:0)/1e6,this.colorSpace=new Ra(e.colorSpace)}else if("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.visibleRect&&Oe(t.visibleRect,"init.visibleRect"),"undefined"!==typeof VideoFrame)return new xa(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*me),duration:Math.trunc((null!=(x=t.duration)?x:0)*me)||void 0,visibleRect:t.visibleRect&&{x:t.visibleRect.left,y:t.visibleRect.top,width:t.visibleRect.width,height:t.visibleRect.height}}),t);let i=0,r=0;if("naturalWidth"in e?(i=e.naturalWidth,r=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,r=e.videoHeight):"width"in e&&(i=Number(e.width),r=Number(e.height)),!i||!r)throw new TypeError("Could not determine dimensions.");const n=null!=(C=t.visibleRect)?C:{left:0,top:0,width:i,height:r},s=new OffscreenCanvas(n.width,n.height),a=s.getContext("2d",{alpha:Se(),willReadFrequently:!0});if(!a)throw new Error("OffscreenCanvas must have support for the '2d' context in order to create a VideoSample from this data.");a.drawImage(e,-n.left,-n.top),this._data=s,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:n.width,height:n.height},this.squarePixelWidth=n.width,this.squarePixelHeight=n.height,this.rotation=null!=(B=t.rotation)?B:0,this.timestamp=t.timestamp,this.duration=null!=(E=t.duration)?E:0,this.colorSpace=new Ra({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else{if(!(e instanceof wa))throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(this._data=e,e._referenceCount++,this.format=e.getFormat(),null!==this.format&&!Pa.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:e.getCodedWidth(),height:e.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=e.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=e.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=null!=(_=t.rotation)?_:0,this.timestamp=t.timestamp,this.duration=null!=(F=t.duration)?F:0,this.colorSpace=e.getColorSpace()}this.encodeOptions=null!=(A=null==t?void 0:t.encodeOptions)?A:{},this.pixelAspectRatio=Ne({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),null==Sa||Sa.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return I(null!==this._data),this._data instanceof wa?new xa(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):Fa(this._data)?new xa(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):this._data instanceof Uint8Array?(I(this._layout),new xa(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions,_doNotCopy:!0})):new xa(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions})}close(){this._closed||(null==Sa||Sa.unregister(this),this._data instanceof wa?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Fa(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){var t;if(Ma(e),this._closed)throw new Error("VideoSample is closed.");if(null==(null!=(t=e.format)?t:this.format))throw new Error("Cannot get allocation size when format is null.");if(Fa(this._data))return this._data.allocationSize(e);return La(this,e).allocationSize}copyTo(e){return y(this,arguments,function*(e,t={}){var i,r;if(!H(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(Ma(t),this._closed)throw new Error("VideoSample is closed.");if(null==(null!=(i=t.format)?i:this.format))throw new Error("Cannot copy video sample data when format is null.");if(I(null!==this._data),Fa(this._data))return this._data.copyTo(e,t);if(t.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(t.format)){if(!(this._data instanceof wa)){if("undefined"===typeof VideoFrame)throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");const i=this.toVideoFrame(),r=yield i.copyTo(e,t);return i.close(),r}{const i={stack:[],error:void 0,hasError:!1};try{const n=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,n;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(n=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");n&&(r=function(){try{n.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t}(i,yield this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},null!=(r=t.colorSpace)?r:"srgb"),!1);if(!(n instanceof xa))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(n.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${n.format}' instead.`);return yield n.copyTo(e,t)}catch(u){i.error=u,i.hasError=!0}finally{ba(i)}}}const n=La(this,t);I(this.format);const s=R(e);if(s.byteLength!(e.data instanceof Uint8Array)||!Number.isInteger(e.stride)||e.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');o=e}else if(this._data instanceof Uint8Array)I(this._layout),I(this._layout.length===a.length),o=this._layout.map((e,t)=>{const i=Math.ceil(this.codedHeight/a[t].heightDivisor);return{data:this._data.subarray(e.offset,e.offset+e.stride*i),stride:e.stride}});else{const e=this._data.getContext("2d");I(e);const t=e.getImageData(0,0,this.codedWidth,this.codedHeight);o=[{data:R(t.data),stride:4*this.codedWidth}]}const l=[],c=a.length;for(let d=0;di.byteLength)throw new Error("Source buffer OOB read.");if(a+c>s.byteLength)throw new Error("Destination buffer OOB write.");const n=i.subarray(r,r+c);s.set(n,a),r+=t,a+=e.destinationStride}l.push(u)}if(void 0!==t.format){const e=this.format.startsWith("RGB")!==t.format.startsWith("RGB"),i=this.format.includes("X")&&t.format.includes("A");if(e||i)for(let t=0;te+t.data.byteLength,0),i=new Uint8Array(t);let r=0;const n=[];for(const s of e)i.set(s.data,r),n.push(r),r+=s.data.byteLength;return new VideoFrame(i,{format:this.format,layout:e.map((e,t)=>({offset:n[t],stride:e.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}return Fa(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?(I(this._layout),new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,layout:this._layout,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,i,r,n,s,a,o,l){let c=0,u=0,d=this.displayWidth,h=this.displayHeight,f=0,m=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(c=t,u=i,d=r,h=n,f=s,m=a,void 0!==o?(p=o,g=l):(p=d,g=h)):(f=t,m=i,void 0!==r&&(p=r,g=n)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(c))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(f))throw new TypeError("dx must be a number.");if(!Number.isFinite(m))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:c,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(c,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const y=f+p/2,b=m+g/2;e.translate(y,b),e.rotate(this.rotation*Math.PI/180);const T=this.rotation%180===0?1:p/g;e.scale(1/T,T),e.drawImage(k,c,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){var i,r,n,s,a,o,l,c,u;if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&Da(t.crop,"options.");const d=e.canvas.width,h=e.canvas.height,f=null!=(i=t.rotation)?i:this.rotation,[m,p]=f%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let g,k,y,b,T=t.crop;T&&(T=Aa(T,m,p));const{sx:v,sy:S,sWidth:w,sHeight:P}=this._rotateSourceRegion(null!=(n=null==(r=t.crop)?void 0:r.left)?n:0,null!=(a=null==(s=t.crop)?void 0:s.top)?a:0,null!=(l=null==(o=t.crop)?void 0:o.width)?l:m,null!=(u=null==(c=t.crop)?void 0:c.height)?u:p,f);if("fill"===t.fit)g=0,k=0,y=d,b=h;else{const[e,i]=t.crop?[t.crop.width,t.crop.height]:[m,p],r="contain"===t.fit?Math.min(d/e,h/i):Math.max(d/e,h/i);y=e*r,b=i*r,g=(d-y)/2,k=(h-b)/2}e.save();const I=f%180===0?1:y/b;e.translate(d/2,h/2),e.rotate(f*Math.PI/180),e.scale(1/I,I),e.translate(-d/2,-h/2),e.drawImage(this.toCanvasImageSource(),v,S,w,P,g,k,y,b),e.restore()}_rotateSourceRegion(e,t,i,r,n){return 90===n?[e,t,i,r]=[t,this.squarePixelHeight-e-i,r,i]:180===n?[e,t]=[this.squarePixelWidth-e-i,this.squarePixelHeight-t-r]:270===n&&([e,t,i,r]=[this.squarePixelWidth-t-r,e,r,i]),{sx:e,sy:t,sWidth:i,sHeight:r}}_drawWithFitAndMipmapping(e,t,i){const r=e.width,n=e.height,[s,a]=i.rotation%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],o=i.crop?i.crop.width:s,l=i.crop?i.crop.height:a;let c=0;2*r0?_a(d,h):{canvas:e,context:t,isNew:i.targetIsFresh};m.imageSmoothingQuality="high",i.fillBlack?(m.fillStyle="black",m.fillRect(0,0,d,h)):p||m.clearRect(0,0,d,h),this.drawWithFit(m,{fit:i.fit,rotation:i.rotation,crop:i.crop}),m.globalCompositeOperation="copy";for(let g=c;g>1;g--){const e=r*u(2,g),t=n*u(2,g);m.drawImage(f,0,0,e,t,0,0,e/2,t/2)}m.globalCompositeOperation="source-over",c>0&&(t.imageSmoothingQuality="high",t.globalCompositeOperation="copy",t.drawImage(f,0,0,2*r,2*n,0,0,r,n),t.globalCompositeOperation="source-over")}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(I(null!==this._data),this._data instanceof wa||this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}transform(e){return y(this,null,function*(){var t,i,r,n,s;if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.width&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(void 0!==e.height&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(void 0!==e.roundDimensionsTo&&(!Number.isInteger(e.roundDimensionsTo)||e.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(void 0!==e.fit&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==e.width&&void 0!==e.height&&void 0===e.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==e.rotate&&![0,90,180,270].includes(e.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(void 0!==e.crop&&Da(e.crop,"options."),void 0!==e.alpha&&!["keep","discard"].includes(e.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");const a=x(this.rotation+(null!=(t=e.rotate)?t:0)),[o,l]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let c=e.crop;c&&(c=Aa(c,o,l));const u=c?c.width:o,d=c?c.height:l,h=u/d;let f,m;void 0!==e.width&&void 0===e.height?(f=e.width,m=f/h):void 0===e.width&&void 0!==e.height?(m=e.height,f=m*h):void 0!==e.width&&void 0!==e.height?(f=e.width,m=e.height):(f=u,m=d),f=le(f,null!=(i=e.roundDimensionsTo)?i:1),m=le(m,null!=(r=e.roundDimensionsTo)?r:1);const p={width:f,height:m,fit:null!=(n=e.fit)?n:"fill",rotation:a,crop:null!=c?c:{left:0,top:0,width:o,height:l},alpha:null!=(s=e.alpha)?s:"keep"};for(const e of Ca){let t=e(this,p);if(Ce(t)&&(t=yield t),null!==t)return t}const{canvas:g,context:k,isNew:y}=_a(p.width,p.height);return this._drawWithFitAndMipmapping(g,k,{fit:p.fit,rotation:p.rotation,crop:p.crop,targetIsFresh:y,fillBlack:"discard"===p.alpha}),new xa(g,{timestamp:this.timestamp,duration:this.duration,rotation:0})})}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}setEncodeOptions(e){if(!e||"object"!==typeof e)throw new TypeError("newEncodeOptions must be an object.");this.encodeOptions=e}[Symbol.dispose](){this.close()}}const Ca=[],Ba=[];let Ea=0;const _a=(e,t)=>{for(const n of Ba)if(n.canvas.width===e&&n.canvas.height===t)return n.age=Ea++,{canvas:n.canvas,context:n.context,isNew:!1};let i;if("undefined"!==typeof OffscreenCanvas)i=new OffscreenCanvas(e,t);else{if("undefined"===typeof window||"undefined"===typeof document)throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");i=document.createElement("canvas"),i.width=e,i.height=t}const r=i.getContext("2d",{alpha:!0,willReadFrequently:!1});if(!r)throw new Error("The '2d' canvas context is required to transform VideoSamples. Register a custom transformer using registerVideoSampleTransformer to work around this limitation.");return Ba.length>=3&&Ba.splice(Me(Ba,e=>e.age),1),Ba.push({canvas:i,context:r,age:Ea++}),{canvas:i,context:r,isNew:!0}};class Ra{constructor(e){var t,i,r,n;if(void 0!==e){if(!e||"object"!==typeof e)throw new TypeError("init.colorSpace, when provided, must be an object.");const t=Object.keys(M);if(null!=e.primaries&&!t.includes(e.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${t.join(", ")}.`);const i=Object.keys(O);if(null!=e.transfer&&!i.includes(e.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${i.join(", ")}.`);const r=Object.keys(z);if(null!=e.matrix&&!r.includes(e.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${r.join(", ")}.`);if(null!=e.fullRange&&"boolean"!==typeof e.fullRange)throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}this.primaries=null!=(t=null==e?void 0:e.primaries)?t:null,this.transfer=null!=(i=null==e?void 0:e.transfer)?i:null,this.matrix=null!=(r=null==e?void 0:e.matrix)?r:null,this.fullRange=null!=(n=null==e?void 0:e.fullRange)?n:null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const Fa=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,Aa=(e,t,i)=>{const r=Math.min(e.left,t),n=Math.min(e.top,i),s=Math.min(e.width,t-r),a=Math.min(e.height,i-n);return I(s>=0),I(a>=0),{left:r,top:n,width:s,height:a}},Da=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},Ma=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},Na=(e,t,i)=>{const r=Oa(e),n=[];let s=0;for(const a of r){const e=Math.ceil(t/a.widthDivisor),r=Math.ceil(i/a.heightDivisor),o=e*a.sampleBytes,l=o*r;n.push({offset:s,stride:o}),s+=l}return n},Oa=e=>{const t=(e,t,i,r,n)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:i,heightDivisor:r},{sampleBytes:t,widthDivisor:i,heightDivisor:r}];return n&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:te(e),I(!1)}},La=(e,t)=>{const i={left:0,top:0,width:e.codedWidth,height:e.codedHeight},r=t.rect,n=za(i,r,e.codedWidth,e.codedHeight,e.format),s=t.layout;let a;if(t.format&&t.format!==e.format){if(!["RGBA","RGBX","BGRA","BGRX"].includes(t.format))throw new Error("NotSupportedError: Invalid destination format.");a=t.format}else a=e.format;return qa(n,a,s)},za=(e,t,i,r,n)=>{const s=h({},e);if(void 0!==t){if(0===t.width||0===t.height)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>i)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");s.x=t.x||0,s.y=t.y||0,s.width=t.width||0,s.height=t.height||0}if(!Ua(n,s))throw new TypeError("visibleRect alignment is invalid for the format.");return s},Ua=(e,t)=>{if(null===e)return!0;const i=Oa(e);for(let r=0;r{const r=Oa(t),n=r.length;if(void 0!==i&&i.length!==n)throw new TypeError(`Layout must have ${n} planes.`);let s=0;const a=[],o=[];for(let l=0;l4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(null==e?void 0:e.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/(ja(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let i;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)i=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");i=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const r=this.numberOfFrames*this.numberOfChannels*ja(this.format);if(i.byteLength=this.numberOfFrames)throw new RangeError("frameOffset out of range");const s=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-n;if(s>this.numberOfFrames-n)throw new RangeError("frameCount out of range");const a=ja(r),o=Ka(r);if(o&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!o&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(o?s:s*this.numberOfChannels)*a}copyTo(e,t){if(!H(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!Wa.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{format:i,frameCount:r,frameOffset:n}=t;let{planeIndex:s}=t,a=this.format;const o=null!=i?i:this.format;if(!o)throw new Error("Destination format not determined");const l=this.numberOfFrames,c=this.numberOfChannels,u=null!=n?n:0;if(u>=l)throw new RangeError("frameOffset out of range");const d=void 0!==r?r:l-u;if(d>l-u)throw new RangeError("frameCount out of range");const h=ja(o),f=Ka(o);if(f&&s>=c)throw new RangeError("planeIndex out of range");if(!f&&0!==s)throw new RangeError("planeIndex out of range");const m=(f?d:d*c)*h;if(e.byteLength2&&o!==a)return void Qa(this._data,p,a,o,c,s,u,d);try{return void this._data.copyTo(e,{planeIndex:s,frameOffset:u,frameCount:d,format:o})}catch(S){if("f32-planar"===o)throw S;a="f32-planar"}}const k=Xa(a),y=ja(a),b=Ka(a);let T;if(this._data instanceof Ha){const e=e=>{const t=this._data.getDataPlane(e);if(!(t instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");const i=l*y*(b?1:c);if(t.byteLength!==i)throw new TypeError(`Data plane ${e} has invalid size. Expected exactly ${i} bytes, got ${t.byteLength} bytes.`);return t};if(b)if(f)T=e(s),s=0;else{T=new Uint8Array(l*y*c);for(let t=0;tthis.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t0)for(let r=0;r0&&this.copyTo(n,{planeIndex:0,format:this.format,frameOffset:e,frameCount:i});return new Va({data:n,format:this.format,sampleRate:this.sampleRate,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp+e/this.sampleRate})}close(){this._closed||(null==Sa||Sa.unregister(this),this._data instanceof Ha?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Ga(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof Ha?this._createAudioDataFromData():Ga(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(Ka(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let i=0;i0;){const n=Math.min(s,o),l=new Float32Array(i*n);for(let t=0;t0;){const n=Math.min(s,o),c=new Float32Array(i*n);for(let t=0;t{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},Ka=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},Xa=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},$a=e=>{switch(e){case"u8":case"u8-planar":return(e,t,i)=>e.setUint8(t,se(127.5*(i+1),0,255));case"s16":case"s16-planar":return(e,t,i)=>e.setInt16(t,se(Math.round(32767*i),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,i)=>e.setInt32(t,se(Math.round(2147483647*i),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,i)=>e.setFloat32(t,i,!0)}},Ga=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,Qa=(e,t,i,r,n,s,a,o)=>{const l=Xa(i),c=$a(r),u=ja(i),d=ja(r),h=Ka(i);if(Ka(r))if(h){const r=new ArrayBuffer(o*u),n=F(r);e.copyTo(r,{planeIndex:s,frameOffset:a,frameCount:o,format:i});for(let e=0;e{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(void 0!==e.skipLiveWait&&"boolean"!==typeof e.skipLiveWait)throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},eo=e=>{if(!Fe(e))throw new TypeError("timestamp must be a number.")},to=(e,t,i)=>i.verifyKeyPackets?t.then(t=>y(null,null,function*(){if(!t||"delta"===t.type)return t;const i=yield e.determinePacketType(t);return i&&(t.type=i),t})):t;class io{constructor(e){if(!(e instanceof yo))throw new TypeError("track must be an InputTrack.");this._track=e}getFirstPacket(){return y(this,arguments,function*(e={}){if(Za(e),this._track.input._disposed)throw new Do;return to(this._track,this._track._backing.getFirstPacket(e),e)})}getFirstKeyPacket(){return y(this,arguments,function*(e={}){Za(e);const t=yield this.getFirstPacket(e);return t?"key"===t.type?t:this.getNextKeyPacket(t,e):null})}getPacket(e){return y(this,arguments,function*(e,t={}){if(eo(e),Za(t),this._track.input._disposed)throw new Do;return to(this._track,this._track._backing.getPacket(e,t),t)})}getNextPacket(e){return y(this,arguments,function*(e,t={}){if(!(e instanceof Li))throw new TypeError("packet must be an EncodedPacket.");if(Za(t),this._track.input._disposed)throw new Do;return to(this._track,this._track._backing.getNextPacket(e,t),t)})}getKeyPacket(e){return y(this,arguments,function*(e,t={}){if(eo(e),Za(t),this._track.input._disposed)throw new Do;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const i=yield this._track._backing.getKeyPacket(e,t);if(!i)return i;I("key"===i.type);return"delta"===(yield this._track.determinePacketType(i))?this.getKeyPacket(i.timestamp-1/(yield this._track.getTimeResolution()),t):i})}getNextKeyPacket(e){return y(this,arguments,function*(e,t={}){if(!(e instanceof Li))throw new TypeError("packet must be an EncodedPacket.");if(Za(t),this._track.input._disposed)throw new Do;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const i=yield this._track._backing.getNextKeyPacket(e,t);if(!i)return i;I("key"===i.type);return"delta"===(yield this._track.determinePacketType(i))?this.getNextKeyPacket(i,t):i})}packets(e,t,i={}){if(void 0!==e&&!(e instanceof Li))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!(null==i?void 0:i.metadataOnly))throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof Li))throw new TypeError("endPacket must be an EncodedPacket.");if(Za(i),this._track.input._disposed)throw new Do;const r=[];let{promise:n,resolve:s}=Y(),{promise:a,resolve:o}=Y(),l=!1,c=!1,u=null,d=!1;const h=[],f=()=>Math.max(2,h.length);(()=>y(this,null,function*(){let u=null!=e?e:yield this.getFirstPacket(i);for(;u&&!c&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=(null==t?void 0:t.sequenceNumber));)r.length>f()?(({promise:a,resolve:o}=Y()),yield a):(r.push(u),s(),({promise:n,resolve:s}=Y()),u=yield this.getNextPacket(u,i));l=!0,s()}))().catch(e=>{d||(u=e,d=!0,s())});const m=this._track;return{next(){return y(this,null,function*(){for(;;){if(m.input._disposed)throw new Do;if(c)return{value:void 0,done:!0};if(d)throw u;if(r.length>0){const e=r.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};yield n}})},return(){return y(this,null,function*(){return c=!0,o(),s(),{value:void 0,done:!0}})},throw(e){return y(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}class ro{constructor(e,t){this.onSample=e,this.onError=t}}class no{mediaSamplesInRange(e=-1/0,t=1/0,i){eo(e),eo(t);const r=[];let n=!1,s=null,{promise:a,resolve:o}=Y(),{promise:l,resolve:c}=Y(),u=!1,d=!1,m=!1,p=null,g=null,k=!1;const b=f(h({},i),{verifyKeyPackets:!0,metadataOnly:!1});(()=>y(this,null,function*(){var i;p=yield this._createDecoder(i=>{c(),i.timestamp>=t&&(d=!0),d?i.close():(s&&(i.timestamp>e?(r.push(s),n=!0):s.close()),i.timestamp>=e&&(r.push(i),n=!0),s=n?null:i,r.length>0&&(o(),({promise:a,resolve:o}=Y())))},e=>{k||(g=e,k=!0,o())});const h=this._createPacketSink(),f=null!=(i=yield h.getKeyPacket(e,b))?i:yield h.getFirstKeyPacket(b);let y=f;const T=h.packets(null!=f?f:void 0,void 0,b);for(yield T.next();y&&!d&&!this._track.input._disposed;){const e=so(r.length);if(r.length+p.getDecodeQueueSize()>e){({promise:l,resolve:c}=Y()),yield l;continue}p.decode(y);const t=yield T.next();if(t.done)break;y=t.value}yield T.return(),m||this._track.input._disposed||(yield p.flush()),!n&&s&&r.push(s),u=!0,o()}))().catch(e=>{k||(g=e,k=!0,o())}).finally(()=>{null==p||p.close()});const T=this._track,v=()=>{null==s||s.close();for(const e of r)e.close()};return{next(){return y(this,null,function*(){for(;;){if(T.input._disposed)throw m=!0,d=!0,v(),new Do;if(m)return{value:void 0,done:!0};if(k)throw m=!0,d=!0,v(),g;if(r.length>0){const e=r.shift();return c(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};yield a}})},return(){return y(this,null,function*(){return m=!0,d=!0,c(),o(),v(),{value:void 0,done:!0}})},throw(e){return y(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e,t){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const i=function(e){return T(this,null,function*(){Symbol.iterator in e?yield*v(e[Symbol.iterator]()):yield*v(e[Symbol.asyncIterator]())})}(e),r=[],n=[];let{promise:s,resolve:a}=Y(),{promise:o,resolve:l}=Y(),c=!1,u=!1,d=null,m=null,p=!1;const g=e=>{n.push(e),a(),({promise:s,resolve:a}=Y())},k=f(h({},t),{verifyKeyPackets:!0,metadataOnly:!1});(()=>y(this,null,function*(){d=yield this._createDecoder(e=>{if(l(),u)return void e.close();let t=0;for(;r.length>0&&e.timestamp-r[0]>-1e-10;)t++,r.shift();if(t>0)for(let i=0;i{p||(m=e,p=!0,a())});const e=this._createPacketSink();let t=null,s=null,h=-1;const f=()=>y(this,null,function*(){I(s),I(d);let t=s;for(d.decode(t);t.sequenceNumberi&&!u;)({promise:o,resolve:l}=Y()),yield o;if(u)break;const r=yield e.getNextPacket(t,k);I(r),d.decode(r),t=r}h=-1}),b=()=>y(this,null,function*(){I(d),yield d.flush();for(let e=0;e{p||(m=e,p=!0,a())}).finally(()=>{null==d||d.close()});const b=this._track,w=()=>{for(const e of n)null==e||e.close()};return{next(){return y(this,null,function*(){for(;;){if(b.input._disposed)throw u=!0,w(),new Do;if(u)return{value:void 0,done:!0};if(p)throw u=!0,w(),m;if(n.length>0){const e=n.shift();return I(void 0!==e),l(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};yield s}})},return(){return y(this,null,function*(){return u=!0,l(),a(),w(),{value:void 0,done:!0}})},throw(e){return y(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}const so=e=>0===e?40:8;class ao extends ro{constructor(e,t,i,r,n,s){var a,o,l,c,u,d,m,p;super(e,t),this.codec=i,this.decoderConfig=r,this.rotation=n,this.timeResolution=s,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ye,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1,this.finalSamples=[],this.mergeAlphaPromises=[];const g=Ya.find(e=>e.supports(i,r));if(g)this.customDecoder=new g,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof xa))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();I(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if(Pe()){if("avc"===i&&this.decoderConfig.description){const e=mt(R(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=gt(e.sequenceParameterSets[0]);t&&(0===t.frameMbsOnlyFlag&&(this.decoderConfig=f(h({},this.decoderConfig),{hardwareAcceleration:"prefer-software"})),0!==t.maxDecFrameBuffering&&1!==t.bitstreamRestrictionFlag&&(e.sequenceParameterSets[0]=yt(t),this.decoderConfig=f(h({},this.decoderConfig),{description:ft(e)})))}}q(this.decoderConfig.colorSpace)||(this.decoderConfig=f(h({},this.decoderConfig),{colorSpace:{primaries:null!=(o=null==(a=this.decoderConfig.colorSpace)?void 0:a.primaries)?o:"bt709",matrix:null!=(c=null==(l=this.decoderConfig.colorSpace)?void 0:l.matrix)?c:"bt709",transfer:null!=(d=null==(u=this.decoderConfig.colorSpace)?void 0:u.transfer)?d:"bt709",fullRange:null!=(p=null==(m=this.decoderConfig.colorSpace)?void 0:m.fullRange)&&p}}))}const t=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){var e,t;return this.customDecoder?this.customDecoderQueueSize:(I(this.decoder),Math.max(this.decoder.decodeQueueSize,null!=(t=null==(e=this.alphaDecoder)?void 0:e.decodeQueueSize)?t:0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--);else{if(I(this.decoder),Te()||Q(this.inputTimestamps,e.timestamp,e=>e),Pe()&&0===this.currentPacketIndex)if("avc"===this.codec){const t=[];let i=!1;for(const n of at(e.data,this.decoderConfig)){const r=ot(e.data[n.offset]);if(i||(i=r>=1&&r<=5),r===et.AUD){if(i)break;t.length=0}r>=20&&r<=31||t.push(e.data.subarray(n.offset,n.offset+n.length))}if(!this.decoderConfig.description)for(let e=0;e{if(t.description){const i=3&R(t.description)[4];return dt(e,i+1)}return ut(e)})(t,this.decoderConfig);e=new Li(r,e.type,e.timestamp,e.duration)}else if("hevc"===this.codec){const t=Ft(e.data,this.decoderConfig);t&&(e=new Li(t,e.type,e.timestamp,e.duration))}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha)return void this.pushNullAlphaFrame();if(this.merger||(this.merger=new lo),!this.alphaDecoder){const e=e=>{if(this.colorQueue.length>0){const t=this.colorQueue.shift();I(void 0!==t),this.mergeAlpha(t,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();I(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=Ut(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(null!=t?t:e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(const t of bt(e,this.decoderConfig)){const i=Tt(e[t.offset]);if(i===it.RASL_N||i===it.RASL_R)return!0}return!1}sampleHandler(e){if(Te()){if(this.sampleQueue.length>0&&e.timestamp>=C(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}Q(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();I(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}mergeAlpha(e,t){return y(this,null,function*(){const i=Y();this.mergeAlphaPromises.push(i.promise);const r={sample:null};this.finalSamples.push(r);try{if(t){I(this.merger);const i=yield this.merger.merge(e,t);r.sample=new xa(i)}else r.sample=new xa(e);for(;this.finalSamples.length>0&&null!==this.finalSamples[0].sample;){const e=this.finalSamples.shift();this.sampleHandler(e.sample)}}catch(n){J(this.finalSamples,r),this.onError(n)}finally{J(this.mergeAlphaPromises,i.promise),i.resolve()}})}flush(){return y(this,null,function*(){var e;if(this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(I(this.decoder),yield Promise.all([this.decoder.flush(),null==(e=this.alphaDecoder)?void 0:e.flush()]),yield Promise.all(this.mergeAlphaPromises),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),Te()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1})}close(){var e;this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(I(this.decoder),"closed"!==this.decoder.state&&this.decoder.close(),this.alphaDecoder&&"closed"!==this.alphaDecoder.state&&this.alphaDecoder.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,null==(e=this.merger)||e.close());for(const t of this.sampleQueue)t.close();this.sampleQueue.length=0}}let oo=null;class lo{constructor(){this.workers=[],this.nextWorkerIndex=0,this.pendingRequests=new Map,this.nextRequestId=0}merge(e,t){if(0===this.workers.length){if(!oo){const e=new Blob([`(${co.toString()})()`],{type:"application/javascript"});oo=URL.createObjectURL(e)}const e=se(navigator.hardwareConcurrency,1,4);for(let t=0;t{const t=e.data,i=this.pendingRequests.get(t.id);i&&(this.pendingRequests.delete(t.id),"error"in t?i.reject(new Error(t.error)):i.resolve(t.frame))}),e.addEventListener("error",e=>{const t=new Error(e.message||"Color/alpha merge worker error.");for(const i of this.pendingRequests.values())i.reject(t);this.pendingRequests.clear()}),this.workers.push(e)}}const i=this.nextRequestId++,r=Y();this.pendingRequests.set(i,r);const n=this.workers[this.nextWorkerIndex];return this.nextWorkerIndex=(this.nextWorkerIndex+1)%this.workers.length,n.postMessage({id:i,color:e,alpha:t},{transfer:[e,t]}),r.promise}close(){for(const t of this.workers)t.terminate();this.workers.length=0;const e=new Error("Color/alpha merger closed.");for(const t of this.pendingRequests.values())t.reject(e);this.pendingRequests.clear()}}const co=()=>{let e=null,t=null,i=Promise.resolve();self.addEventListener("message",e=>{const{id:t,color:n,alpha:s}=e.data;i=i.then(()=>y(null,null,function*(){try{const e=yield r(n,s);self.postMessage({id:t,frame:e},{transfer:[e]})}catch(e){self.postMessage({id:t,error:e.message})}finally{n.close(),s.close()}}))});const r=(e,t)=>y(null,null,function*(){const i=e.format,r=t.format;if(!i||!r)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");const o=i.includes("P10"),l=i.includes("P12"),c=r.includes("P10"),u=r.includes("P12");if(c!==o||u!==l)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${i}', alpha: '${r}').`);if("RGBX"===i||"RGBA"===i||"BGRX"===i||"BGRA"===i)return yield n(e,t,i);if("I420"===i||"I420P10"===i||"I420P12"===i||"I422"===i||"I422P10"===i||"I422P12"===i||"I444"===i||"I444P10"===i||"I444P12"===i)return yield s(e,t,i);if("NV12"===i)return yield a(e,t);throw new Error(`CPU color/alpha merging does not support format '${i}'.`)}),n=(e,t,i)=>y(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=c*u,h=new Uint8Array(4*d);yield e.copyTo(h);const f=yield o(t,c,u,1);for(let e=0,t=3;ey(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=i.includes("P10"),h=i.includes("P12"),f=d||h?2:1;let m,p;i.startsWith("I420")?(m=Math.ceil(c/2),p=Math.ceil(u/2)):i.startsWith("I422")?(m=Math.ceil(c/2),p=u):(m=c,p=u);const g=c*u,k=g*f,y=m*p*f,b=new Uint8Array(k+2*y+g*f);yield e.copyTo(b);const T=yield o(t,c,u,f),v=k+2*y;b.set(T,v);const S={format:i.slice(0,4)+"A"+i.slice(4),codedWidth:c,codedHeight:u,timestamp:e.timestamp,duration:null!=(l=e.duration)?l:void 0,transfer:[b.buffer]};return new VideoFrame(b,S)}),a=(e,i)=>y(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=c*u,h=Math.ceil(c/2)*Math.ceil(u/2),f=e.allocationSize();t&&t.byteLength===f||(t=new Uint8Array(f)),yield e.copyTo(t);const m=new Uint8Array(d+2*h+d);m.set(t.subarray(0,d),0);const p=d,g=d+h,k=d;for(let e=0;ey(null,null,function*(){const s=t.allocationSize();e&&e.byteLength===s||(e=new Uint8Array(s)),yield t.copyTo(e);const a=t.format;if("RGBA"===a||"BGRA"===a||"RGBX"===a||"BGRX"===a){const t="RGBA"===a||"RGBX"===a?0:2,n=i*r;for(let i=0;i{if(!e||"object"!==typeof e)throw new TypeError("decoderOptions must be an object.");if(void 0!==e.hardwareAcceleration&&!["no-preference","prefer-hardware","prefer-software"].includes(e.hardwareAcceleration))throw new TypeError("decoderOptions.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(void 0!==e.optimizeForLatency&&"boolean"!==typeof e.optimizeForLatency)throw new TypeError("decoderOptions.optimizeForLatency, when provided, must be a boolean.")};class ho extends no{constructor(e,t={}){if(!(e instanceof vo))throw new TypeError("videoTrack must be an InputVideoTrack.");uo(t),super(),this._track=e,this._decoderOptions=t}_createDecoder(e,t){return y(this,null,function*(){if(!(yield this._track.canDecode())){if("undefined"===typeof VideoDecoder)throw new Error(Ie("VideoDecoder"));throw new Error("This video track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=yield this._track.getCodec(),r=yield this._track.getRotation();let n=yield this._track.getDecoderConfig();const s=yield this._track.getTimeResolution();return I(i&&n),n=f(h({},n),{hardwareAcceleration:this._decoderOptions.hardwareAcceleration,optimizeForLatency:this._decoderOptions.optimizeForLatency}),new ao(e,t,i,n,r,s)})}_createPacketSink(){return new io(this._track)}getSample(e){return y(this,arguments,function*(e,t={}){eo(e);try{for(var i,r,n,s=S(this.mediaSamplesAtTimestamps([e],t));i=!(r=yield s.next()).done;i=!1){return r.value}}catch(r){n=[r]}finally{try{i&&(r=s.return)&&(yield r.call(s))}finally{if(n)throw n[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class fo{constructor(e,t={}){var i,r,n;if(this._rotation=0,this._initPromise=null,this._nextCanvasIndex=0,!(e instanceof vo))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&Da(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");void 0!==t.decoderOptions&&uo(t.decoderOptions),this._videoTrack=e,this._alpha=null!=(i=t.alpha)&&i,this._options=t,this._fit=null!=(r=t.fit)?r:"fill",this._videoSampleSink=new ho(e,t.decoderOptions),this._canvasPool=Array.from({length:null!=(n=t.poolSize)?n:0},()=>null)}_ensureInit(){var e;return null!=(e=this._initPromise)?e:this._initPromise=(()=>y(this,null,function*(){var e;const t=this._options,i=this._videoTrack,r=null!=(e=t.rotation)?e:yield i.getRotation(),n=yield i.getSquarePixelWidth(),s=yield i.getSquarePixelHeight(),[a,o]=r%180===0?[n,s]:[s,n];let l=t.crop;l&&(l=Aa(l,a,o));let[c,u]=l?[l.width,l.height]:[a,o];const d=c/u;void 0!==t.width&&void 0===t.height?(c=t.width,u=Math.round(c/d)):void 0===t.width&&void 0!==t.height?(u=t.height,c=Math.round(u*d)):void 0!==t.width&&void 0!==t.height&&(c=t.width,u=t.height),this._width=c,this._height=u,this._rotation=r,this._crop=l}))()}_videoSampleToWrappedCanvas(e){const t=this._width,i=this._height;let r=this._canvasPool[this._nextCanvasIndex],n=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=t,r.height=i):r=new OffscreenCanvas(t,i),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),n=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const s=r.getContext("2d",{alpha:this._alpha||Se()});I(s),e._drawWithFitAndMipmapping(r,s,{fit:this._fit,rotation:this._rotation,crop:this._crop,targetIsFresh:n,fillBlack:!this._alpha&&Se()});const a={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),a}getCanvas(e,t){return y(this,null,function*(){eo(e),yield this._ensureInit();const i=yield this._videoSampleSink.getSample(e,t);return i&&this._videoSampleToWrappedCanvas(i)})}canvases(e,t,i){return T(this,null,function*(){yield new b(this._ensureInit()),yield*v(ne(this._videoSampleSink.samples(e,t,i),e=>this._videoSampleToWrappedCanvas(e)))})}canvasesAtTimestamps(e,t){return T(this,null,function*(){yield new b(this._ensureInit()),yield*v(ne(this._videoSampleSink.samplesAtTimestamps(e,t),e=>e&&this._videoSampleToWrappedCanvas(e)))})}}class mo extends ro{constructor(e,t,i,r){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ye,this.customDecoderQueueSize=0,this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0;const n=t=>{let i=t.timestamp;null!==this.expectedFirstTimestamp&&null===this.currentTimestamp&&(this.timestampOffset=this.expectedFirstTimestamp-i),i+=this.timestampOffset,(null===this.currentTimestamp||Math.abs(i-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=i);const n=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const s=r.sampleRate;t.setTimestamp(Math.round(n*s)/s),e(t)},s=Ja.find(e=>e.supports(i,r));if(s)this.customDecoder=new s,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof Va))throw new TypeError("The argument passed to onSample must be an AudioSample.");n(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{n(new Va(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(r)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(I(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--)):(I(this.decoder),null!=this.expectedFirstTimestamp||(this.expectedFirstTimestamp=e.timestamp),this.decoder.decode(e.toEncodedAudioChunk()))}flush(){return y(this,null,function*(){this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(I(this.decoder),yield this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0})}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(I(this.decoder),"closed"!==this.decoder.state&&this.decoder.close())}}class po extends ro{constructor(e,t,i){super(e,t),this.decoderConfig=i,this.currentTimestamp=null,I(di.includes(i.codec)),this.codec=i.codec;const{dataType:r,sampleSize:n,littleEndian:s}=Pi(this.codec);switch(this.inputSampleSize=n,n){case 1:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint8(t)-u(2,7):"signed"===r?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===r?this.readInputValue=(e,t)=>(e=>{let t=0,i=0,r=~e;128&r&&(r&=-129,t=-1),i=5+((240&r)>>4);const n=(1<(e=>{let t=0,i=0,r=85^e;128&r&&(r&=-129,t=-1),i=4+((240&r)>>4);let n=0;return n=4!==i?1<e.getUint16(t,s)-u(2,15):"signed"===r?this.readInputValue=(e,t)=>e.getInt16(t,s):I(!1);break;case 3:"unsigned"===r?this.readInputValue=(e,t)=>ie(e,t,s)-u(2,23):"signed"===r?this.readInputValue=(e,t)=>((e,t,i)=>ie(e,t,i)<<8>>8)(e,t,s):I(!1);break;case 4:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint32(t,s)-u(2,31):"signed"===r?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===r?this.readInputValue=(e,t)=>e.getFloat32(t,s):I(!1);break;case 8:"float"===r?this.readInputValue=(e,t)=>e.getFloat64(t,s):I(!1);break;default:te(n),I(!1)}switch(n){case 1:"ulaw"===r||"alaw"===r?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,i)=>e.setUint8(t,i+u(2,7)));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i<<8,!0);break;case 4:this.outputSampleSize=4,"float"===r?(this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0);break;default:te(n),I(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=F(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,r=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,n=new ArrayBuffer(r),s=new DataView(n);for(let c=0;c=a)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=a;const l=new Va({format:this.outputFormat,data:n,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:o});this.onSample(l)}flush(){return y(this,null,function*(){})}close(){}}class go extends no{constructor(e){if(!(e instanceof So))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}_createDecoder(e,t){return y(this,null,function*(){if(!(yield this._track.canDecode())){if("undefined"===typeof AudioDecoder)throw new Error(Ie("AudioDecoder"));throw new Error("This audio track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=yield this._track.getCodec(),r=yield this._track.getDecoderConfig();return I(i&&r),di.includes(r.codec)?new po(e,t,r):new mo(e,t,i,r)})}_createPacketSink(){return new io(this._track)}getSample(e){return y(this,arguments,function*(e,t={}){eo(e);try{for(var i,r,n,s=S(this.mediaSamplesAtTimestamps([e],t));i=!(r=yield s.next()).done;i=!1){return r.value}}catch(r){n=[r]}finally{try{i&&(r=s.return)&&(yield r.call(s))}finally{if(n)throw n[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class ko{constructor(e){if(!(e instanceof So))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new go(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}getBuffer(e,t){return y(this,null,function*(){eo(e);const i=yield this._audioSampleSink.getSample(e,t);return i&&this._audioSampleToWrappedArrayBuffer(i)})}buffers(e,t,i){return ne(this._audioSampleSink.samples(e,t,i),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e,t){return ne(this._audioSampleSink.samplesAtTimestamps(e,t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class yo{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof vo}isAudioTrack(){return this instanceof So}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}getInternalCodecId(){return y(this,null,function*(){return this._backing.getInternalCodecId()})}get internalCodecId(){return bo(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}getLanguageCode(){return y(this,null,function*(){return this._backing.getLanguageCode()})}get languageCode(){return bo(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}getName(){return y(this,null,function*(){return this._backing.getName()})}get name(){return bo(this._backing.getName(),"name","getName")}getTimeResolution(){return y(this,null,function*(){return this._backing.getTimeResolution()})}get timeResolution(){return bo(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}isRelativeToUnixEpoch(){return y(this,null,function*(){return this._backing.isRelativeToUnixEpoch()})}getUnixTimeForTimestamp(e){return y(this,null,function*(){return this._backing.getUnixTimeForTimestamp(e)})}hasUnixTimeMapping(){return y(this,null,function*(){return null!==(yield this._backing.getUnixTimeForTimestamp(yield this.getFirstTimestamp()))})}getDisposition(){return y(this,null,function*(){return this._backing.getDisposition()})}get disposition(){return bo(this._backing.getDisposition(),"disposition","getDisposition")}getBitrate(){return y(this,null,function*(){return this._backing.getBitrate()})}getAverageBitrate(){return y(this,null,function*(){return this._backing.getAverageBitrate()})}getFirstTimestamp(){return y(this,null,function*(){var e;const t=yield this._backing.getFirstPacket({metadataOnly:!0});return null!=(e=null==t?void 0:t.timestamp)?e:0})}computeDuration(e){return y(this,null,function*(){var t,i;const r=yield this._backing.getPacket(1/0,h({metadataOnly:!0},e)),n=(null!=(t=null==r?void 0:r.timestamp)?t:0)+(null!=(i=null==r?void 0:r.duration)?i:0);return ce(n,yield this.getTimeResolution())})}getDurationFromMetadata(){return y(this,arguments,function*(e={}){return this._backing.getDurationFromMetadata(e)})}computePacketStats(e=1/0,t){return y(this,null,function*(){const i=new io(this);let r=1/0,n=-1/0,s=0,a=0;try{for(var o,l,c,u=S(i.packets(void 0,void 0,h({metadataOnly:!0},t)));o=!(l=yield u.next()).done;o=!1){const t=l.value;if(s>=e&&t.timestamp>=n)break;r=Math.min(r,t.timestamp),n=Math.max(n,t.timestamp+t.duration),s++,a+=t.byteLength}}catch(l){c=[l]}finally{try{o&&(l=u.return)&&(yield l.call(u))}finally{if(c)throw c[0]}}return{packetCount:s,averagePacketRate:s?Number((s/(n-r)).toPrecision(16)):0,averageBitrate:s?Number((8*a/(n-r)).toPrecision(16)):0}})}isLive(){return y(this,null,function*(){return null!==(yield this._backing.getLiveRefreshInterval())})}getLiveRefreshInterval(){return y(this,null,function*(){return this._backing.getLiveRefreshInterval()})}canBePairedWith(e){if(!(e instanceof yo))throw new TypeError("other must be an InputTrack.");return this.input===e.input&&this!==e&&(this._backing.getPairingMask()&e._backing.getPairingMask())!==BigInt("0")}getPairableTracks(e){return y(this,null,function*(){return this.input.getTracks(xo({filter:e=>e.canBePairedWith(this)},e))})}getPairableVideoTracks(e){return y(this,null,function*(){return this.input.getVideoTracks(xo({filter:e=>e.canBePairedWith(this)},e))})}getPairableAudioTracks(e){return y(this,null,function*(){return this.input.getAudioTracks(xo({filter:e=>e.canBePairedWith(this)},e))})}getPrimaryPairableVideoTrack(e){return y(this,null,function*(){return this.input.getPrimaryVideoTrack(xo({filter:e=>e.canBePairedWith(this)},e))})}getPrimaryPairableAudioTrack(e){return y(this,null,function*(){return this.input.getPrimaryAudioTrack(xo({filter:e=>e.canBePairedWith(this)},e))})}hasPairableTrack(e){return y(this,null,function*(){e&&(e=To(e));const t=yield this.input.getTracks();for(const i of t)if(this.canBePairedWith(i)&&(!e||(yield e(i))))return!0;return!1})}hasPairableVideoTrack(e){return e&&(e=To(e)),this.hasPairableTrack(t=>y(this,null,function*(){return t.isVideoTrack()&&(!e||(yield e(t)))}))}hasPairableAudioTrack(e){return e&&(e=To(e)),this.hasPairableTrack(t=>y(this,null,function*(){return t.isAudioTrack()&&(!e||(yield e(t)))}))}}const bo=(e,t,i)=>{if(Ce(e))throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${i}()' instead.`);return e},To=e=>{if(void 0!==e&&"function"!==typeof e)throw new TypeError("predicate, when provided, must be a function.");return e?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("predicate must return or resolve to a boolean value.");return e},r=e(t);return Ce(r)?r.then(i):i(r)}:void 0};class vo extends yo{constructor(e,t){super(e,t),this._pixelAspectRatioCache=null,this._backing=t}get type(){return"video"}getCodec(){return y(this,null,function*(){return this._backing.getCodec()})}get codec(){return bo(this._backing.getCodec(),"codec","getCodec")}hasOnlyKeyPackets(){return y(this,null,function*(){var e,t,i;return null!=(i=yield null==(t=(e=this._backing).getHasOnlyKeyPackets)?void 0:t.call(e))?i:"prores"===(yield this._backing.getCodec())})}getCodedWidth(){return y(this,null,function*(){return this._backing.getCodedWidth()})}get codedWidth(){return bo(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}getCodedHeight(){return y(this,null,function*(){return this._backing.getCodedHeight()})}get codedHeight(){return bo(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}getRotation(){return y(this,null,function*(){return this._backing.getRotation()})}get rotation(){return bo(this._backing.getRotation(),"rotation","getRotation")}getSquarePixelWidth(){return y(this,null,function*(){return this._backing.getSquarePixelWidth()})}get squarePixelWidth(){return bo(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}getSquarePixelHeight(){return y(this,null,function*(){return this._backing.getSquarePixelHeight()})}get squarePixelHeight(){return bo(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}getPixelAspectRatio(){return y(this,null,function*(){var e;return null!=(e=this._pixelAspectRatioCache)?e:this._pixelAspectRatioCache=Ne({num:(yield this.getSquarePixelWidth())*(yield this.getCodedHeight()),den:(yield this.getSquarePixelHeight())*(yield this.getCodedWidth())})})}get pixelAspectRatio(){var e;return null!=(e=this._pixelAspectRatioCache)?e:this._pixelAspectRatioCache=Ne({num:bo(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*bo(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:bo(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*bo(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")})}getDisplayWidth(){return y(this,null,function*(){var e,t;const i=yield null==(t=(e=this._backing).getMetadataDisplayWidth)?void 0:t.call(e);if(null!=i)return i;return(yield this.getRotation())%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight()})}get displayWidth(){var e,t;const i=null==(t=(e=this._backing).getMetadataDisplayWidth)?void 0:t.call(e);if(void 0!==i){const e=bo(i,"displayWidth","getDisplayWidth");if(null!==e)return e}const r=bo(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return bo(r,"displayWidth","getDisplayWidth")}getDisplayHeight(){return y(this,null,function*(){var e,t;const i=yield null==(t=(e=this._backing).getMetadataDisplayHeight)?void 0:t.call(e);if(null!=i)return i;return(yield this.getRotation())%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth()})}get displayHeight(){var e,t;const i=null==(t=(e=this._backing).getMetadataDisplayHeight)?void 0:t.call(e);if(void 0!==i){const e=bo(i,"displayHeight","getDisplayHeight");if(null!==e)return e}const r=bo(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return bo(r,"displayHeight","getDisplayHeight")}getColorSpace(){return y(this,null,function*(){return this._backing.getColorSpace()})}hasHighDynamicRange(){return y(this,null,function*(){const e=yield this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pq"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix})}canBeTransparent(){return y(this,null,function*(){return this._backing.canBeTransparent()})}getDecoderConfig(){return y(this,null,function*(){return this._backing.getDecoderConfig()})}getCodecParameterString(){return y(this,null,function*(){var e,t,i;const r=yield null==(t=(e=this._backing).getMetadataCodecParameterString)?void 0:t.call(e);if(null!=r)return r;const n=yield this._backing.getDecoderConfig();return null!=(i=null==n?void 0:n.codec)?i:null})}canDecode(){return y(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=yield this._backing.getCodec();if(I(null!==t),Ya.some(i=>i.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(yield VideoDecoder.isConfigSupported(e)).supported}catch(e){return We._error("Error during decodability check:",e),!1}})}determinePacketType(e){return y(this,null,function*(){if(!(e instanceof Li))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");const t=yield this.getCodec();if(null===t)return null;const i=yield this.getDecoderConfig();return I(i),Ut(t,i,e.data)})}computeFrameRateMetrics(){return y(this,arguments,function*(e={}){var t,i;if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.targetPacketCount&&(!Fe(e.targetPacketCount)||e.targetPacketCount<0))throw new TypeError("options.targetPacketCount must be a non-negative number.");const r=yield this.getTimeResolution(),n=null!=(t=e.targetPacketCount)?t:256,s=new io(this),a=[];let o=-1/0,l=0;try{for(var c,u,d,h=S(s.packets(void 0,void 0,{metadataOnly:!0}));c=!(u=yield h.next()).done;c=!1){const e=u.value;if(a.length>=n&&e.timestamp>=o)break;a.push(e.timestamp),o=Math.max(o,e.timestamp),l++}}catch(u){d=[u]}finally{try{c&&(u=h.return)&&(yield u.call(h))}finally{if(d)throw d[0]}}const f=new Float64Array(a.length);for(let S=0;Se-t),x=P-1>>1,C=P>>1;let B=0,E=0,_=0;for(const S of I)if(_+=b.get(S),0===B&&_>x&&(B=S),_>C){E=S;break}const R=(k/B+k/E)/2;return{underlyingFrameRate:g,bestGuessFrameRate:null!==g?g:_o(R),minFrameRate:k/v,maxFrameRate:k/T,averageFrameRate:k*P/w,medianFrameRate:R,frameRateIsConstant:null!==g&&1===T&&1===v,probedPacketCount:l}})}}class So extends yo{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}getCodec(){return y(this,null,function*(){return this._backing.getCodec()})}get codec(){return bo(this._backing.getCodec(),"codec","getCodec")}hasOnlyKeyPackets(){return y(this,null,function*(){var e,t,i;return null==(i=yield null==(t=(e=this._backing).getHasOnlyKeyPackets)?void 0:t.call(e))||i})}getNumberOfChannels(){return y(this,null,function*(){return this._backing.getNumberOfChannels()})}get numberOfChannels(){return bo(this._backing.getNumberOfChannels(),"numberOfChannels","getNumberOfChannels")}getSampleRate(){return y(this,null,function*(){return this._backing.getSampleRate()})}get sampleRate(){return bo(this._backing.getSampleRate(),"sampleRate","getSampleRate")}getDecoderConfig(){return y(this,null,function*(){return this._backing.getDecoderConfig()})}getCodecParameterString(){return y(this,null,function*(){var e,t,i;const r=yield null==(t=(e=this._backing).getMetadataCodecParameterString)?void 0:t.call(e);if(null!=r)return r;const n=yield this._backing.getDecoderConfig();return null!=(i=null==n?void 0:n.codec)?i:null})}canDecode(){return y(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=yield this._backing.getCodec();if(I(null!==t),Ja.some(i=>i.supports(t,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof 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0!==e.formatOptions&&((e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(`${t}, when provided, must be an object.`);if(void 0!==e.isobmff){if(!e.isobmff||"object"!==typeof e.isobmff)throw new TypeError(`${t}.isobmff, when provided, must be an object.`);if(void 0!==e.isobmff.resolveKeyId&&"function"!==typeof e.isobmff.resolveKeyId)throw new TypeError(`${t}.isobmff.resolveKeyId, when provided, must be a function.`)}if(void 0!==e.hls){if(!e.hls||"object"!==typeof e.hls)throw new TypeError(`${t}.hls, when provided, must be an object.`);if(void 0!==e.hls.offsetTimestampsByDateTime&&"boolean"!==typeof e.hls.offsetTimestampsByDateTime)throw new TypeError(`${t}.hls.offsetTimestampsByDateTime, when provided, must be a boolean.`)}})(e.formatOptions,"formatOptions"),this._formats=e.formats,this._initInput=null!=(t=e.initInput)?t:null,this._formatOptions=null!=(i=e.formatOptions)?i:{},e.source instanceof 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t?(i=Vo(e,!0),r=Vo(e,!0)):(r=Vo(e,!1),i=Vo(e,!1)),4294967296*r+i},Go=e=>4294967296*jo(e)+jo(e),Qo=e=>4294967296*Xo(e)+jo(e),Yo=e=>{const t=Ko(e),i=(e=>{Oo(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*i+t},Jo=e=>{Oo(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},Zo=e=>{Oo(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},el=(e,t)=>{Oo(e,t);let i="";for(let r=0;rA.decode(Lo(e,t)).split("\n").map(e=>e.trim()).filter(e=>{var t;return e.length>0&&!(null==(t=null==i?void 0:i.ignore)?void 0:t.call(i,e))});var il,rl,nl,sl;(rl=il||(il={}))[rl.Unsynchronisation=128]="Unsynchronisation",rl[rl.ExtendedHeader=64]="ExtendedHeader",rl[rl.ExperimentalIndicator=32]="ExperimentalIndicator",rl[rl.Footer=16]="Footer",(sl=nl||(nl={}))[sl.ISO_8859_1=0]="ISO_8859_1",sl[sl.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",sl[sl.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",sl[sl.UTF_8=3]="UTF_8";const al=128,ol=10,ll=["Blues","Classic 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rock","Trop rock","World music","Neoclassical","Audiobook","Audio theatre","Neue Deutsche Welle","Podcast","Indie rock","G-Funk","Dubstep","Garage rock","Psybient"],cl=(e,t)=>{var i;const r=e.filePos;null!=t.raw||(t.raw={}),null!=(i=t.raw).TAG||(i.TAG=Lo(e,al-3)),e.filePos=r;const n=ul(e,30);n&&(null!=t.title||(t.title=n));const s=ul(e,30);s&&(null!=t.artist||(t.artist=s));const a=ul(e,30);a&&(null!=t.album||(t.album=a));const o=ul(e,4),l=Number.parseInt(o,10);Number.isInteger(l)&&l>0&&(null!=t.date||(t.date=new Date(String(l))));const c=Lo(e,30);let u;if(0===c[28]&&0!==c[29]){const i=c[29];i>0&&(null!=t.trackNumber||(t.trackNumber=i)),e.skip(-30),u=ul(e,28),e.skip(2)}else e.skip(-30),u=ul(e,30);u&&(null!=t.comment||(t.comment=u));const d=zo(e);d{const i=Lo(e,t),r=Be(i.indexOf(0),i.length),n=i.subarray(0,r);let s="";for(let a=0;a{const t=e.filePos,i=el(e,3),r=zo(e),n=zo(e),s=zo(e),a=jo(e);if("ID3"!==i||255===r||255===n||0!==(2155905152&a))return e.filePos=t,null;let o=Fi(a);return s&il.Footer&&(o+=ol),{majorVersion:r,revision:n,flags:s,size:o}},hl=(e,t,i)=>{var r,n,s,a,o,l;if(![2,3,4].includes(t.majorVersion))return void We._warn(`Unsupported ID3v2 major version: ${t.majorVersion}`);const c=t.flags&il.Footer?t.size-ol:t.size,u=Lo(e,c),d=new fl(t,u);if(t.flags&il.Unsynchronisation&&3===t.majorVersion&&d.ununsynchronizeAll(),t.flags&il.ExtendedHeader){const e=d.readU32();3===t.majorVersion?d.pos+=e:d.pos+=e-4}for(;d.pos<=d.bytes.length-d.frameHeaderSize();){const e=d.readId3V2Frame();if(!e)break;const c=d.pos,u=d.pos+e.size;let h=!1,f=!1,m=!1;if(3===t.majorVersion?(h=!!(64&e.flags),f=!!(128&e.flags)):4===t.majorVersion&&(h=!!(4&e.flags),f=!!(8&e.flags),m=!!(2&e.flags)||!!(t.flags&il.Unsynchronisation)),h)We._warn(`Skipping encrypted ID3v2 frame ${e.id}`),d.pos=u;else if(f)We._warn(`Skipping compressed ID3v2 frame ${e.id}`),d.pos=u;else{if(m&&d.ununsynchronizeRegion(d.pos,u),null!=i.raw||(i.raw={}),"TXXX"===e.id){const e=null!=(n=(r=i.raw).TXXX)?n:r.TXXX={},t=d.readId3V2TextEncoding(),s=d.readId3V2Text(t,u),a=d.readId3V2Text(t,u);null!=e[s]||(e[s]=a)}else"T"===e.id[0]?null!=(s=i.raw)[a=e.id]||(s[a]=d.readId3V2EncodingAndText(u)):null!=(o=i.raw)[l=e.id]||(o[l]=d.readBytes(e.size));switch(d.pos=c,e.id){case"TIT2":case"TT2":null!=i.title||(i.title=d.readId3V2EncodingAndText(u));break;case"TIT3":case"TT3":null!=i.description||(i.description=d.readId3V2EncodingAndText(u));break;case"TPE1":case"TP1":null!=i.artist||(i.artist=d.readId3V2EncodingAndText(u));break;case"TALB":case"TAL":null!=i.album||(i.album=d.readId3V2EncodingAndText(u));break;case"TPE2":case"TP2":null!=i.albumArtist||(i.albumArtist=d.readId3V2EncodingAndText(u));break;case"TRCK":case"TRK":{const e=d.readId3V2EncodingAndText(u).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(null!=i.trackNumber||(i.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&(null!=i.tracksTotal||(i.tracksTotal=r))}break;case"TPOS":case"TPA":{const e=d.readId3V2EncodingAndText(u).split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(null!=i.discNumber||(i.discNumber=t)),r&&Number.isInteger(r)&&r>0&&(null!=i.discsTotal||(i.discsTotal=r))}break;case"TCON":case"TCO":{const e=d.readId3V2EncodingAndText(u);let t=/^\((\d+)\)/.exec(e);if(t){const e=Number.parseInt(t[1]);if(void 0!==ll[e]){null!=i.genre||(i.genre=ll[e]);break}}if(t=/^\d+$/.exec(e),t){const e=Number.parseInt(t[0]);if(void 0!==ll[e]){null!=i.genre||(i.genre=ll[e]);break}}null!=i.genre||(i.genre=e)}break;case"TDRC":case"TDAT":{const e=d.readId3V2EncodingAndText(u),t=new Date(e);Number.isNaN(t.getTime())||null!=i.date||(i.date=t)}break;case"TYER":case"TYE":{const e=d.readId3V2EncodingAndText(u),t=Number.parseInt(e,10);Number.isInteger(t)&&(null!=i.date||(i.date=new Date(String(t))))}break;case"USLT":case"ULT":{const e=d.readU8();d.pos+=3,d.readId3V2Text(e,u),null!=i.lyrics||(i.lyrics=d.readId3V2Text(e,u))}break;case"COMM":case"COM":{const e=d.readU8();d.pos+=3,d.readId3V2Text(e,u),null!=i.comment||(i.comment=d.readId3V2Text(e,u))}break;case"APIC":case"PIC":{const e=d.readId3V2TextEncoding();let r;if(2===t.majorVersion){const e=d.readAscii(3);r="PNG"===e?"image/png":"JPG"===e?"image/jpeg":"image/*"}else r=d.readId3V2Text(e,u);const n=d.readU8(),s=d.readId3V2Text(e,u).trimEnd(),a=u-d.pos;if(a>=0){const e=d.readBytes(a);i.images||(i.images=[]),i.images.push({data:e,mimeType:r,kind:3===n?"coverFront":4===n?"coverBack":"unknown",description:s})}}break;default:d.pos+=e.size}d.pos=u}}};class fl{constructor(e,t){this.header=e,this.bytes=t,this.pos=0,this.view=new DataView(t.buffer,t.byteOffset,t.byteLength)}frameHeaderSize(){return 2===this.header.majorVersion?6:10}ununsynchronizeAll(){const e=[];for(let t=0;t{const t=this.pos+e;if(t>this.bytes.length)return!1;if(t<=this.bytes.length-this.frameHeaderSize()){this.pos+=e;const t=this.readAscii(4);if("\0\0\0\0"!==t&&!/[0-9A-Z]{4}/.test(t))return!1}return!0};if(!s(i)){const e=4===this.header.majorVersion?t:Fi(t);s(e)&&(i=e)}return this.pos=n,{id:e,size:i,flags:r}}}readId3V2TextEncoding(){const e=this.readU8();if(e>3)throw new Error(`Unsupported text encoding: ${e}`);return e}readId3V2Text(e,t){const i=this.pos,r=this.readBytes(t-this.pos);switch(e){case nl.ISO_8859_1:{let e="";for(let t=0;t0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}if(254===r[0]&&255===r[1]){const e=new TextDecoder("utf-16be"),t=Be(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(2,t))}{const e=Be(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),A.decode(r.subarray(0,e))}case nl.UTF_16_BE_NO_BOM:{const e=new TextDecoder("utf-16be"),t=Be(r.findIndex((e,t)=>0===e&&0===r[t+1]&&t%2===0),r.length);return this.pos=i+Math.min(t+2,r.length),e.decode(r.subarray(0,t))}case nl.UTF_8:{const e=Be(r.findIndex(e=>0===e),r.length);return this.pos=i+Math.min(e+1,r.length),A.decode(r.subarray(0,e))}}}readId3V2EncodingAndText(e){if(this.pos>=e)return"";const t=this.readId3V2TextEncoding();return this.readId3V2Text(t,e)}}class ml{constructor(e){this.events=e,this.input=null,this.audioSink=null,this.audioIterator=null,this.audioContext=null,this.gainNode=null,this.audioContextStartTime=0,this.playbackTimeAtStart=0,this.latestScheduledEndTime=0,this.duration=Number.NaN,this.paused=!0,this.volume=.7,this.muted=!1,this.playbackRate=1,this.asyncId=0,this.queuedNodes=new Set}get currentTime(){return this.paused?this.playbackTimeAtStart:(this.audioContext.currentTime-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart}ensureAudioContext(e){if(this.audioContext)return;const t=window.AudioContext||window.webkitAudioContext;try{this.audioContext=new t({sampleRate:e})}catch(i){this.audioContext=new t}this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination),this.updateGain()}updateGain(){if(!this.gainNode)return;const e=this.muted?0:this.volume;this.gainNode.gain.value=e*e}stopQueuedNodes(){this.queuedNodes.forEach(e=>e.stop()),this.queuedNodes.clear()}stopIterator(){return y(this,null,function*(){var e;yield null==(e=this.audioIterator)?void 0:e.return(),this.audioIterator=null})}handleNoAudioTrack(){this.audioSink=null,this.ensureAudioContext()}load(e,t){return y(this,null,function*(){++this.asyncId,yield 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this.audioContext.resume(),this.events.emit("canplay"),this.events.emit("playing"));for(const{buffer:e,timestamp:t}of i){const i=this.audioContext.createBufferSource();i.buffer=e,i.connect(this.gainNode),i.playbackRate.value=this.playbackRate;const r=this.audioContextStartTime+(t-this.playbackTimeAtStart)/this.playbackRate,n=(r+e.duration/this.playbackRate-this.audioContextStartTime)*this.playbackRate+this.playbackTimeAtStart;n>this.latestScheduledEndTime&&(this.latestScheduledEndTime=n),r>=this.audioContext.currentTime?i.start(r):i.start(this.audioContext.currentTime,(this.audioContext.currentTime-r)*this.playbackRate),this.queuedNodes.add(i),i.onended=()=>this.queuedNodes.delete(i)}if(r)break;yield new Promise(e=>setTimeout(e,0));const n=1;for(;this.latestScheduledEndTime-this.currentTime>n;){if(e!==this.asyncId||this.paused)return;yield new Promise(e=>setTimeout(e,50))}}})}play(){return y(this,null,function*(){if(!this.paused)return;this.audioContext||this.ensureAudioContext(),"suspended"===this.audioContext.state&&(yield this.audioContext.resume()),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart,this.paused=!1;const e=++this.asyncId;this.runIterator(e)})}pause(){this.paused||(this.playbackTimeAtStart=this.currentTime,this.paused=!0,this.stopIterator(),this.stopQueuedNodes())}seek(e){return y(this,null,function*(){this.playbackTimeAtStart=Math.max(0,e),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.playbackTimeAtStart;const t=++this.asyncId;this.paused||this.runIterator(t)})}setVolume(e,t){this.volume=e,this.muted=t,this.updateGain()}setPlaybackRate(e){if(e!==this.playbackRate&&(this.paused||(this.playbackTimeAtStart=this.currentTime,this.audioContextStartTime=this.audioContext.currentTime),this.playbackRate=e,!this.paused)){const e=++this.asyncId;this.runIterator(e)}}destroy(){var e;this.asyncId++,this.pause(),null==(e=this.audioContext)||e.close(),this.audioContext=null,this.input=null,this.audioSink=null}}function pl(e){return y(this,null,function*(){var t,i;return null!=(i=null!=(t=yield e.getAverageBitrate())?t:yield e.getBitrate())?i:0})}const gl=/\.m3u8(?:$|[?#])/i;function kl(e){return"string"===typeof e&&gl.test(e)}function yl(e){const t=function(e){return"string"===typeof e?new Bs(e):e instanceof Blob?new Ps(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new Rs(e):null!=e?e:null}(e);return t?new Fo({source:t,formats:kl(e)?ya:ka}):null}class bl{constructor(){this.active=!0,this.input=null,this.timers=new Set,this.controller="undefined"===typeof AbortController?void 0:new AbortController,this.cancellation=new Promise(e=>{this.resolveCancellation=e})}get signal(){var e;return null==(e=this.controller)?void 0:e.signal}own(e){this.active?this.input=e:e.dispose()}defer(e){if(!this.active)return;const t=setTimeout(()=>{this.timers.delete(t),this.active&&e()},0);this.timers.add(t)}wait(e,t){return y(this,null,function*(){try{yield Promise.race([e,this.cancellation,t>0?this.timeout(t):new Promise(()=>{})])}finally{void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0)}})}timeout(e){return new Promise((t,i)=>{this.deadline=setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){const e=this.input;this.input=null,null==e||e.dispose()}cancel(){var e;if(this.active){this.active=!1;for(const e of this.timers)clearTimeout(e);this.timers.clear(),void 0!==this.deadline&&(clearTimeout(this.deadline),this.deadline=void 0),this.resolveCancellation(),null==(e=this.controller)||e.abort(),this.disposeInput()}}}function Tl(e,t,i){for(const r of i){if(!t())return;e.emit(r)}}function vl(e){return y(this,arguments,function*({input:e,videoTrack:t,audioTrack:i}){const r=[t,i].filter(e=>null!==e),n=t||i,s=Boolean(n&&(yield n.isLive()));let a=Number.NaN;return r.length>0&&(a=yield e.getDurationFromMetadata(r,{skipLiveWait:!0}),null!==a||s||(a=yield e.computeDuration(r,{skipLiveWait:!0}))),s?Number.POSITIVE_INFINITY:null!=a?a:Number.NaN})}function Sl(){let e,t;return{promise:new Promise((i,r)=>{e=i,t=r}),resolve:e,reject:t}}class wl{constructor(e){this.host=e,this.wanted=!1,this.playing=null,this.seeking=null,this.audioStart=null}operation(){return f(h({},Sl()),{source:this.host.loadSeq,complete:Sl()})}current(e,t){return!this.host.destroyed&&e.source===this.host.loadSeq&&this[t]===e}cancelPlay(){const e=this.playing;this.playing=null,null==e||e.resolve()}invalidate(){this.cancelPlay(),this.wanted=!1;const e=this.seeking;this.seeking=null,null==e||e.complete.resolve(),null==e||e.resolve(),this.host.seeking=!1}ended(){this.wanted=!1,this.cancelPlay()}stop(){this.host.paused||(this.host.paused=!0,this.stopEngines(),this.host.events.emit("pause"))}stopEngines(){const e=[];for(const i of[()=>this.host.audio.pause(),()=>this.host.video.stop()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}pause(){this.wanted=!1,this.cancelPlay(),this.stop()}play(){if(this.host.destroyed)return Promise.resolve();if(this.wanted=!0,this.playing)return this.playing.promise;if(this.host.ended)return this.seek(0,!0);if(!this.host.paused&&!this.seeking)return Promise.resolve();const e=this.operation();return this.playing=e,this.runPlay(e).then(e.resolve,e.reject),e.promise}startAudio(){return y(this,null,function*(){this.audioStart||(this.audioStart=this.host.audio.play());const e=this.audioStart;try{yield e}finally{this.audioStart===e&&(this.audioStart=null)}})}runPlay(e){return y(this,null,function*(){const t=()=>this.current(e,"playing")&&this.wanted;try{for(;this.seeking;)if(yield this.seeking.complete.promise,!t())return;if(!t())return;if(this.host.paused=!1,yield this.startAudio(),!t())return void(this.wanted&&!this.host.destroyed||this.host.audio.pause());this.host.video.start(this.host.audio),Tl(this.host.events,t,["play","playing"])}catch(i){if(!t())return;this.wanted=!1,this.host.paused=!0;try{this.stopEngines()}catch(r){console.warn("MediaBunny play cleanup error:",r)}throw i}finally{this.playing===e&&(this.playing=null)}})}seek(e,t){return this.position(t=>y(this,null,function*(){const i=this.host.audio.seek(e),r=t()?this.host.video.seek(e):Promise.resolve();yield Promise.all([i,r])}),["seeked"],!1,t)}replace(e,t){return this.position(i=>y(this,null,function*(){e.duration=yield vl(e),i()&&(this.host.media=e,yield Promise.all([this.host.video.load(e),this.host.audio.load(e)]),i()&&(yield Promise.all([this.host.video.seek(t),this.host.audio.seek(t)]),i()&&(this.host.readyState=4,this.host.networkState=1)))}),["loadedmetadata","durationchange","progress","loadeddata","canplay","canplaythrough","seeked"],!0)}position(e,t,i,r){if(this.host.destroyed)return Promise.resolve();this.wanted=null!=r?r:this.seeking?this.wanted:!this.host.paused,this.cancelPlay();const n=this.seeking,s=this.operation();return this.seeking=s,null==n||n.complete.resolve(),null==n||n.resolve(),this.runPosition(s,e,t,i).then(s.resolve,s.reject),s.promise}runPosition(e,t,i,r){return y(this,null,function*(){const n=()=>this.current(e,"seeking");let s=!1;try{if(r&&this.stop(),!n())return;if(this.host.ended=!1,this.host.seeking=!0,Tl(this.host.events,n,["seeking","waiting"]),!n())return;if(r||this.stop(),!n())return;if(yield t(n),!n())return;if(this.host.seeking=!1,e.complete.resolve(),Tl(this.host.events,n,i),!n())return;this.seeking=null,s=this.wanted}catch(a){if(!n())return;throw this.host.seeking=!1,this.wanted=!1,this.cancelPlay(),this.host.reportError(a),a}finally{e.complete.resolve(),this.seeking===e&&(this.seeking=null)}s&&(yield this.play())})}}class Pl{constructor({canvas:e,ctx:t,events:i,timeupdateInterval:r=250,avSyncTolerance:n=.12,dropLateFrames:s=!1,poster:a="",preflightRange:o=!1}){this.canvas=e,this.ctx=t,this.events=i,this.timeupdateInterval=r,this.avSyncTolerance=n,this.dropLateFrames=s,this.poster=a,this.preflightRange=o,this.input=null,this.videoSink=null,this.videoIterator=null,this.nextFrame=null,this.rafId=0,this.asyncId=0,this.width=0,this.height=0,this.duration=Number.NaN,this.audioClock=null,this.lastTimeUpdate=0,this.stalled=!1,this.playbackRate=1,this.posterDrawn=!1,this.isFetching=!1}preflight(e,t,i){return y(this,null,function*(){return function(e,t,i,r,n=()=>!0){return y(this,null,function*(){if((null==r?void 0:r.aborted)||!n())return!1;if(!t||"string"!==typeof e||kl(e))return!0;try{const t=yield fetch(e,r?{method:"HEAD",signal:r}:{method:"HEAD"});if((null==r?void 0:r.aborted)||!n())return!1;const s=t.headers.get("accept-ranges");return!(!s||"none"===s)||(i.emit("error",new Event("RangeNotSupported")),!1)}catch(s){return!((null==r?void 0:r.aborted)||!n())&&(console.warn("Preflight check failed:",s),!0)}})}(e,this.preflightRange,this.events,t,i)})}drawPoster(){if(!this.poster||this.posterDrawn)return;const e=new Image;e.onload=()=>{this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,this.ctx.drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e.src=this.poster}stopIterator(){return y(this,null,function*(){var e;yield null==(e=this.videoIterator)?void 0:e.return(),this.videoIterator=null})}clear(){this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height)}load(e,t){return y(this,null,function*(){++this.asyncId,yield this.stopIterator(),this.clear(),this.posterDrawn=!1;const{input:i,videoTrack:r,duration:n}=e;if(this.input=i,this.duration=n,!r)return this.handleNoVideoTrack(),void(null==t||t());if(null===r.codec||!(yield r.canDecode()))return this.handleNoVideoTrack(),void(null==t||t());const s=yield r.canBeTransparent();this.videoSink=new fo(r,{poolSize:2,fit:"contain",alpha:s}),this.width=r.displayWidth,this.height=r.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,null==t||t(),yield this.resetIterator(0)})}handleNoVideoTrack(){this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster()}resetIterator(e){return y(this,null,function*(){var t,i;if(yield this.stopIterator(),!this.videoSink)return;this.videoIterator=this.videoSink.canvases(e);const r=null!=(t=(yield this.videoIterator.next()).value)?t:null,n=null!=(i=(yield this.videoIterator.next()).value)?i:null;this.nextFrame=n,r?this.ctx.drawImage(r.canvas,0,0):this.drawPoster()})}updateNextFrame(e){return y(this,null,function*(){var t;if(this.videoIterator&&!this.isFetching){this.isFetching=!0;try{for(;;){const i=null!=(t=(yield this.videoIterator.next()).value)?t:null;if(!i||e!==this.asyncId)return;const r=this.audioClock.currentTime,n=this.dropLateFrames?Math.max(.06,this.avSyncTolerance/Math.max(1,this.playbackRate)):0;if(!(this.dropLateFrames&&i.timestampr)return void(this.nextFrame=null)}}}finally{this.isFetching=!1}}})}render(){if(!this.audioClock)return;const e=this.audioClock.currentTime,t=Date.now();if(t-this.lastTimeUpdate>=this.timeupdateInterval&&(this.events.emit("timeupdate"),this.lastTimeUpdate=t),Number.isFinite(this.duration)&&e>=this.duration)return this.stop(),this.stalled=!1,this.events.emit("ended"),this.events.emit("pause"),void this.events.emit("canplay");this.nextFrame&&this.nextFrame.timestamp<=e?(this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.ctx.drawImage(this.nextFrame.canvas,0,0),this.nextFrame=null,this.updateNextFrame(this.asyncId),this.stalled&&(this.events.emit("canplay"),this.events.emit("playing"),this.stalled=!1)):this.nextFrame||(this.updateNextFrame(this.asyncId),!this.nextFrame&&Number.isFinite(this.duration)&&ethis.render())}start(e){this.audioClock=e,this.asyncId++,this.stalled=!1,this.updateNextFrame(this.asyncId),this.rafId=requestAnimationFrame(()=>this.render())}stop(){cancelAnimationFrame(this.rafId)}seek(e){return y(this,null,function*(){this.asyncId++,yield this.resetIterator(e)})}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){this.asyncId++,this.stop(),this.stopIterator(),this.posterDrawn=!1,this.videoSink=null,this.input=null}}class Il{constructor({canvas:e,ctx:i,events:r,option:n={}}){var s,a,o,l,c;g(this,t),this.events=r,this.option=n,this.audio=new ml(r),this.video=new Pl({canvas:e,ctx:i,events:r,timeupdateInterval:null!=(s=n.timeupdateInterval)?s:250,avSyncTolerance:null!=(a=n.avSyncTolerance)?a:.12,dropLateFrames:null!=(o=n.dropLateFrames)&&o,poster:null!=(l=n.poster)?l:"",preflightRange:null!=(c=n.preflightRange)&&c}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,this.input=null,this.media=null,this.loadSession=null,this.destroyed=!1,k(this,t,new wl(this)),r.addEventListener("ended",()=>{this.destroyed||(this.ended=!0,this.paused=!0,p(this,t).ended())})}load(e){return y(this,null,function*(){var i,r;if(this.destroyed)return;const n=++this.loadSeq;if(p(this,t).invalidate(),null==(i=this.loadSession)||i.cancel(),n!==this.loadSeq||this.destroyed)return;if(this.pause(),n!==this.loadSeq||this.destroyed)return;this.disposeInput();const s=new bl;this.loadSession=s,this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,s.defer(()=>this.events.emit("waiting")),s.defer(()=>this.events.emit("loadstart"));const a=Number.isFinite(this.option.loadTimeout)&&null!=(r=this.option.loadTimeout)?r:0;try{yield s.wait(this.performLoad(e,n,s),a)}catch(o){if(n!==this.loadSeq)return;const e=++this.loadSeq;if(p(this,t).invalidate(),s.cancel(),e!==this.loadSeq||this.destroyed)return;this.disposeInput(),this.reportError(o)}})}performLoad(e,t){return y(this,arguments,function*(e,t,i=this.loadSession){const r=()=>!this.destroyed&&t===this.loadSeq;if(!i||!(yield this.video.preflight(e,i.signal,r))||!r())return;const n=yl(e);if(!n)return this.video.handleNoVideoTrack(),void(r()&&this.audio.handleNoAudioTrack());i.own(n);const s=yield function(e,t){return y(this,null,function*(){const i=yield e.getPrimaryVideoTrack(),r=i?yield i.getPrimaryPairableAudioTrack():yield e.getPrimaryAudioTrack(),n=yield 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console.error("MediaBunny load error:",o),o}})}createTimeout(e){return new Promise((t,i)=>{setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){var e;null==(e=this.loadSession)||e.disposeInput(),this.input=null,this.media=null}replaceTracks(e){return y(this,null,function*(){if(this.media&&!this.destroyed)return p(this,t).replace(h(h({},this.media),e),this.currentTime)})}selectHlsQuality(e){return y(this,null,function*(){return function(e,t){return y(this,null,function*(){var i;const{input:r,media:n,loadSeq:s}=e;if(!(null==n?void 0:n.isHls)||!r||e.destroyed)return;const a=()=>!e.destroyed&&e.loadSeq===s&&e.input===r&&e.media===n;let o;try{const e=yield r.getVideoTracks();if(!a())return;const s="auto"===t?yield r.getPrimaryVideoTrack():null!=(i=e.find(e=>e.id===t))?i:n.videoTrack;if(!a()||!s)return;let l=n.audioTrack,c=n.audioMode;l&&s.canBePairedWith(l)||(l=yield s.getPrimaryPairableAudioTrack(),c="auto"),o={videoTrack:s,audioTrack:l,videoMode:"auto"===t?"auto":"manual",audioMode:c}}catch(l){if(!a())return;throw l}a()&&(yield e.replaceTracks(o))})}(this,e)})}selectHlsAudio(e){return y(this,null,function*(){return function(e,t){return y(this,null,function*(){var i;const{input:r,media:n,loadSeq:s}=e;if(!(null==n?void 0:n.isHls)||!r||e.destroyed)return;const a=()=>!e.destroyed&&e.loadSeq===s&&e.input===r&&e.media===n;let o;try{const e=yield r.getAudioTracks();if(!a())return;const s="auto"===t?n.videoTrack?yield n.videoTrack.getPrimaryPairableAudioTrack():yield r.getPrimaryAudioTrack():null!=(i=e.find(e=>e.id===t))?i:n.audioTrack;if(!a()||!s)return;let l=n.videoTrack,c=n.videoMode;l&&s.canBePairedWith(l)||(l=yield s.getPrimaryPairableVideoTrack(),c="auto"),o={videoTrack:l,audioTrack:s,videoMode:c,audioMode:"auto"===t?"auto":"manual"}}catch(l){if(!a())return;throw l}a()&&(yield e.replaceTracks(o))})}(this,e)})}getHlsState(){return y(this,null,function*(){const e=this.media;if(this.destroyed)return null;try{const t=yield function(e){return y(this,null,function*(){var t,i,r,n;if(!(null==e?void 0:e.isHls)||!e.input)return null;const[s,a]=yield Promise.all([e.input.getVideoTracks(),e.videoTrack?e.videoTrack.getPairableAudioTracks():[]]),[o,l]=yield Promise.all([Promise.all(s.map((e,t)=>y(null,null,function*(){return{id:e.id,track:e,index:t,name:yield e.getName(),height:yield e.getDisplayHeight(),bitrate:yield pl(e)}}))),Promise.all(a.map((e,t)=>y(null,null,function*(){const i=yield e.getName(),r=yield e.getLanguageCode();return{id:e.id,track:e,index:t,name:i,lang:r,language:r,bitrate:yield pl(e)}})))]);return{levels:o,audios:l,currentLevel:e.videoTrack&&null!=(t=o.find(t=>{var i;return t.id===(null==(i=e.videoTrack)?void 0:i.id)}))?t:null,currentAudio:e.audioTrack&&null!=(i=l.find(t=>{var i;return t.id===(null==(i=e.audioTrack)?void 0:i.id)}))?i:null,videoMode:null!=(r=e.videoMode)?r:"auto",audioMode:null!=(n=e.audioMode)?n:"auto"}})}(e);return this.destroyed||this.media!==e?null:t}catch(t){if(this.destroyed||this.media!==e)return null;throw t}})}play(){return y(this,null,function*(){return p(this,t).play()})}pause(){p(this,t).pause()}seek(e){return y(this,null,function*(){return p(this,t).seek(e)})}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}reportError(e){if(this.destroyed)return;const t=e&&"object"===typeof e?Reflect.get(e,"message"):void 0;this.error={code:4,message:"string"===typeof t?t:String(e)},this.networkState=3,this.events.emit("error")}destroy(){if(this.destroyed)return;this.destroyed=!0,this.loadSeq++,p(this,t).invalidate();const e=[];for(const t of[()=>{var e;return null==(e=this.loadSession)?void 0:e.cancel()},()=>this.pause(),()=>this.disposeInput(),()=>this.audio.destroy(),()=>this.video.destroy()])try{t()}catch(i){e.push(i)}if(e.length)throw e[0]}get currentTime(){return this.audio.currentTime}get duration(){var e,t,i;return null!=(i=null!=(t=null==(e=this.media)?void 0:e.duration)?t:this.audio.duration)?i:this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}t=new WeakMap;const xl=new WeakMap;function Cl(e){let t=xl.get(e);return t||(t={closed:!1,frames:new Set},xl.set(e,t)),t}class Bl{constructor({art:e,canvas:t,ctx:i,option:r}){var n,s;this.art=e,this.canvas=t,this.option=r,this.events=new P,this.engine=new Il({canvas:t,ctx:i,events:this.events,option:r}),this._src=null,this._volume=null!=(n=r.volume)?n:.7,this._muted=!!r.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),r.source?this.src=r.source:(null==(s=e.option)?void 0:s.url)&&(this.src=e.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){Promise.resolve(this.engine.seek(Number(e)||0)).catch(()=>{})}get duration(){return this.engine.duration}get buffered(){return this.createTimeRanges(0,this.engine.duration)}get played(){return this.createTimeRanges(0,this.engine.currentTime)}get seekable(){return this.createTimeRanges(0,this.engine.duration)}createTimeRanges(e,t){return function(e,t,i){return!e||Number.isNaN(e)||i<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>t,end:()=>i}}(this.engine.duration,e,t)}get paused(){return this.engine.paused}get playing(){return!this.engine.paused&&!this.engine.ended}get ended(){return this.engine.ended}get seeking(){return this.engine.seeking}get readyState(){return this.engine.readyState}get networkState(){return this.engine.networkState}get error(){return this.engine.error}get playbackRate(){return this._playbackRate}set playbackRate(e){const t=Number(e);Number.isNaN(t)||t<=0||(this._playbackRate=t,this.engine.setPlaybackRate(t),this.events.emit("ratechange"))}get volume(){return this._volume}set volume(e){var t;this._volume=(t=e,Math.max(0,Math.min(1,Number(t)||0))),this._muted=!1,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}get muted(){return this._muted}set muted(e){this._muted=!!e,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}play(){return this.engine.play()}pause(){this.engine.pause()}load(){this._src&&this.engine.load(this._src)}getM3u8State(){return this.engine.getHlsState()}switchM3u8Quality(e){return this.engine.selectHlsQuality(e)}switchM3u8Audio(e){return this.engine.selectHlsAudio(e)}get videoWidth(){return this.engine.videoWidth}get videoHeight(){return this.engine.videoHeight}get poster(){return this.option.poster||""}set poster(e){this.option.poster=e}get autoplay(){return this.option.autoplay||!1}set autoplay(e){}get loop(){return this.option.loop||!1}set loop(e){}get controls(){return!1}set controls(e){}get playsInline(){return!0}set playsInline(e){}get crossOrigin(){return this.option.crossOrigin||""}set crossOrigin(e){}get preload(){return"auto"}set preload(e){}get defaultMuted(){return!1}set defaultMuted(e){}get defaultPlaybackRate(){return 1}set defaultPlaybackRate(e){}canPlayType(e){return"maybe"}getBoundingClientRect(){return this.canvas.getBoundingClientRect()}requestVideoFrameCallback(e){return function(e,t){const i=Cl(e);if(i.closed)return 0;const 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o=[...t.length?[{arrayCompleteness:1,nalUnitType:St.VPS_NUT,nalUnits:t}]:[],...i.length?[{arrayCompleteness:1,nalUnitType:St.SPS_NUT,nalUnits:i}]:[],...r.length?[{arrayCompleteness:1,nalUnitType:St.PPS_NUT,nalUnits:r}]:[],...n.length?[{arrayCompleteness:1,nalUnitType:Ut(n[0][0]),nalUnits:n}]:[]];return{configurationVersion:1,generalProfileSpace:s.generalProfileSpace,generalTierFlag:s.generalTierFlag,generalProfileIdc:s.generalProfileIdc,generalProfileCompatibilityFlags:s.generalProfileCompatibilityFlags,generalConstraintIndicatorFlags:s.generalConstraintIndicatorFlags,generalLevelIdc:s.generalLevelIdc,minSpatialSegmentationIdc:s.minSpatialSegmentationIdc,parallelismType:a,chromaFormatIdc:s.chromaFormatIdc,bitDepthLumaMinus8:s.bitDepthLumaMinus8,bitDepthChromaMinus8:s.bitDepthChromaMinus8,avgFrameRate:0,constantFrameRate:0,numTemporalLayers:s.spsMaxSubLayersMinus1+1,temporalIdNested:s.spsTemporalIdNestingFlag,lengthSizeMinusOne:3,arrays:o}}catch(t){return lt._error("Error building HEVC 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s=0,a=0,o=0;if(n)s=e.readBits(5);else{let t=0;if(e.readBits(1)){e.skipBits(32),e.skipBits(32);if(e.readBits(1)){let t=0;for(;t<32&&!e.readBits(1);)t++;t<32&&e.skipBits(t)}t=e.readBits(1),t&&(o=e.readBits(5),e.skipBits(32),e.skipBits(5),e.skipBits(5))}const i=e.readBits(1),r=e.readBits(5);for(let n=0;n<=r;n++){e.skipBits(12);const r=e.readBits(5);if(0===n&&(s=r),r>7){const t=e.readBits(1);0===n&&(a=t)}if(t){if(e.readBits(1)){const t=o+1;e.skipBits(t),e.skipBits(t),e.skipBits(1)}}if(i){e.readBits(1)&&e.skipBits(4)}}}const l=e.readBits(4),c=e.readBits(4),u=l+1;e.skipBits(u);const d=c+1;e.skipBits(d);let h=0;if(h=n?0:e.readBits(1),h&&(e.skipBits(4),e.skipBits(3)),e.skipBits(1),e.skipBits(1),e.skipBits(1),!n){e.skipBits(1),e.skipBits(1),e.skipBits(1),e.skipBits(1);const t=e.readBits(1);t&&(e.skipBits(1),e.skipBits(1));let i=0;if(i=e.readBits(1)?2:e.readBits(1),i>0){e.readBits(1)||e.skipBits(1)}t&&e.skipBits(3)}e.skipBits(1),e.skipBits(1),e.skipBits(1);const f=e.readBits(1);let m=8;if(2===r&&f){m=e.readBits(1)?12:10}else r<=2&&(m=f?10:8);let p=0;1!==r&&(p=e.readBits(1));let g=2,k=2,y=2;e.readBits(1)&&(g=e.readBits(8),k=e.readBits(8),y=e.readBits(8));let b=0,T=1,v=1,S=0;return p?b=e.readBits(1):1===g&&13===k&&0===y?(b=1,T=0,v=0):(b=e.readBits(1),0===r?(T=1,v=1):1===r?(T=0,v=0):12===m?(T=e.readBits(1),v=T?e.readBits(1):0):(T=1,v=0),T&&v&&(S=e.readBits(2))),{profile:r,level:s,tier:a,bitDepth:m,monochrome:p,chromaSubsamplingX:T,chromaSubsamplingY:v,chromaSamplePosition:S,videoFullRangeFlag:b,colourPrimaries:g,transferCharacteristics:k,matrixCoefficients:y}}return null},ri=e=>{if(e.length<36)return null;const t=J(e);if(1768124518!==t.getUint32(4))return null;return t.getUint16(8)<28?null:{fullRange:!1,colourPrimaries:t.getUint8(22),transferCharacteristics:t.getUint8(23),matrixCoefficients:t.getUint8(24)}},ni=[480,960,1920,2880,480,960,1920,2880,480,960,1920,2880,480,960,480,960,120,240,480,960,120,240,480,960,120,240,480,960,120,240,480,960],si=e=>{if(e.length<7)throw new Error("Setup header is too short.");if(5!==e[0])throw new Error("Wrong packet type in Setup header.");if("vorbis"!==String.fromCharCode(...e.slice(1,7)))throw new Error("Invalid packet signature in Setup header.");const t=e.length,i=new Uint8Array(t);for(let u=0;u97;)if(1===r.readBits(1)){n=r.pos;break}if(0===n)throw new Error("Invalid Setup header: framing bit not found.");let s=0,a=!1,o=0;for(;r.getBitsLeft()>=97;){const e=r.pos,t=r.readBits(8),i=r.readBits(16),n=r.readBits(16);if(t>63||0!==i||0!==n){r.pos=e;break}if(r.skipBits(1),s++,s>64)break;r.clone().readBits(6)+1===s&&(a=!0,o=s)}if(!a)throw new Error("Invalid Setup header: mode header not found.");if(o>63)throw new Error(`Unsupported mode count: ${o}.`);const l=o;r.pos=0,r.skipBits(n);const c=Array(l).fill(0);for(let u=l-1;u>=0;u--)r.skipBits(40),c[u]=r.readBits(1);return{modeBlockflags:c}},ai=(e,t,i)=>{switch(e){case"avc":for(const e of xt(i,t)){const t=i[e.offset],r=Ct(t);if(r>=Tt.NON_IDR_SLICE&&r<=Tt.SLICE_DPC)return"delta";if(r===Tt.IDR)return"key";if(r===Tt.SEI&&!Ve()){const t=i.subarray(e.offset,e.offset+e.length),r=Bt(t);let n=1;do{let e=0;for(;;){const t=r[n++];if(void 0===t)break;if(e+=t,t<255)break}let t=0;for(;;){const e=r[n++];if(void 0===e)break;if(t+=e,e<255)break}if(e===6){const e=new ht(r);e.pos=8*n;const t=$(e),i=e.readBits(1);if(0===t&&1===i)return"key"}n+=t}while(n{var i,r;const n=J(e);let s=0;const a=n.getUint32(s,!0);s+=4;const o=Z.decode(e.subarray(s,s+a));s+=a,a>0&&(null!=t.raw||(t.raw={}),null!=(i=t.raw).vendor||(i.vendor=o));const l=n.getUint32(s,!0);s+=4;for(let 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e=Qe(c),i=J(e),r=i.getUint32(0,!1),n=i.getUint32(4,!1),s=String.fromCharCode(...e.subarray(8,8+n)),a=i.getUint32(8+n,!1),o=Z.decode(e.subarray(12+n,12+n+a)),l=i.getUint32(n+a+28),u=e.subarray(n+a+32,n+a+32+l);null!=t.images||(t.images=[]),t.images.push({data:u,mimeType:s,kind:3===r?"coverFront":4===r?"coverBack":"unknown",name:void 0,description:o||void 0})}}}},ui=[2,1,2,3,3,4,4,5],di=e=>{if(e.length<7)return null;if(11!==e[0]||119!==e[1])return null;const t=new ht(e);t.skipBits(16),t.skipBits(16);const i=t.readBits(2);if(3===i)return null;const r=t.readBits(6),n=t.readBits(5);if(n>8)return null;const s=t.readBits(3),a=t.readBits(3);0!==(1&a)&&1!==a&&t.skipBits(2),0!==(4&a)&&t.skipBits(2),2===a&&t.skipBits(2);return{fscod:i,bsid:n,bsmod:s,acmod:a,lfeon:t.readBits(1),bitRateCode:Math.floor(r/2)}},hi=[128,138,192,128,140,192,160,174,240,160,176,240,192,208,288,192,210,288,224,242,336,224,244,336,256,278,384,256,280,384,320,348,480,320,350,480,384,416,576,384,418,576,448,486,672,448,488,672,512,556,768,512,558,768,640,696,960,640,698,960,768,834,1152,768,836,1152,896,974,1344,896,976,1344,1024,1114,1536,1024,1116,1536,1280,1392,1920,1280,1394,1920,1536,1670,2304,1536,1672,2304,1792,1950,2688,1792,1952,2688,2048,2228,3072,2048,2230,3072,2304,2506,3456,2304,2508,3456,2560,2786,3840,2560,2788,3840],fi=[1,2,3,6],mi=e=>{if(e.length<6)return null;if(11!==e[0]||119!==e[1])return null;const t=new ht(e);t.skipBits(16);const i=t.readBits(2);if(t.skipBits(3),0!==i&&2!==i)return null;const r=t.readBits(11),n=t.readBits(2);let s,a=0;3===n?(a=t.readBits(2),s=3):s=t.readBits(2);const o=t.readBits(3),l=t.readBits(1),c=t.readBits(5);if(c<11||c>16)return null;const u=fi[s];let d;d=n<3?yt[n]/1e3:bt[a]/1e3;return{dataRate:Math.round((r+1)*d/(16*u)),substreams:[{fscod:n,fscod2:a,bsid:c,bsmod:0,acmod:o,lfeon:l,numDepSub:0,chanLoc:0}]}},pi=e=>{const t=e.substreams[0];return j(t),t.fscod<3?yt[t.fscod]:null!==t.fscod2&&t.fscod2<3?bt[t.fscod2]:null},gi=e=>{const t=e.substreams[0];j(t);let i=ui[t.acmod]+t.lfeon;if(t.numDepSub>0){const e=[2,2,1,1,2,2,2,1,1];for(let r=0;r<9;r++)t.chanLoc&1<<8-r&&(i+=e[r])}return i},ki=[0,8e3,16e3,32e3,0,0,11025,22050,44100,0,0,12e3,24e3,48e3,96e3,192e3],yi=[32e3,56e3,64e3,96e3,112e3,128e3,192e3,224e3,256e3,32e4,384e3,448e3,512e3,576e3,64e4,768e3,96e4,1024e3,1152e3,128e4,1344e3,1408e3,1411200,1472e3,1536e3,192e4,2048e3,3072e3,384e4,0,0,0],bi=[16,16,20,20,0,24,24,0],Ti=[1,2,2,2,2,3,3,4,4,5,6,6,6,7,8,8],vi=[1,2,2,2,2,3,18,19,6,7,518,323,83,519,582,535],Si=[32e3,44100,48e3,0],wi=[8e3,16e3,32e3,64e3,128e3,22050,44100,88200,176400,352800,12e3,24e3,48e3,96e3,192e3,384e3],Pi=[512,1024,2048,4096],Ii=e=>{const t=Ci(e),i=J(e);let r=t?4*Math.ceil(t.frameSize/4):0,n=null;for(;r+4<=e.length&&1683496997===i.getUint32(r);){const t=Bi(e.subarray(r));if(!t)break;null!=n||(n=t),r+=t.frameSize}if(t)return{frameSize:n?r:t.frameSize,sampleRate:t.sampleRate,numberOfChannels:t.numberOfChannels,sampleCount:t.sampleCount,channelLayout:t.channelLayout,pcmResolution:t.pcmResolution,bitRate:t.bitRate,core:t,hasExtensions:null!==n};if(!(null==n?void 0:n.asset))return 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object.");return new nr(null!=(t=null==e?void 0:e.data)?t:this.data,null!=(i=null==e?void 0:e.type)?i:this.type,null!=(r=null==e?void 0:e.timestamp)?r:this.timestamp,null!=(n=null==e?void 0:e.duration)?n:this.duration,null!=(s=null==e?void 0:e.sequenceNumber)?s:this.sequenceNumber,this.byteLength,null!=(a=null==e?void 0:e.sideData)?a:this.sideData)}}const sr=e=>{const t=J(e);let i=0;const r=t.getUint8(i);i+=1,i+=3;const n=he(e.subarray(i,i+16));i+=16;let s=null;if(r>0){const r=t.getUint32(i);if(i+=4,r>0){s=[];for(let t=0;te.systemId===t.systemId&&((e,t)=>{if(e.length!==t.length)return!1;for(let i=0;i{let t=dl(e);const i=Tl(e,4);let r=8;1===t&&(t=pl(e),r=16);const n=t-r;return n<0?null:{name:i,totalSize:t,headerSize:r,contentSize:n}},lr=e=>fl(e)/65536,cr=e=>fl(e)/1073741824,ur=e=>{let t=0;for(let i=0;i<4;i++){t<<=7;const i=sl(e);if(t|=127&i,0===(128&i))break}return t},dr=e=>{let t=ol(e);return e.skip(2),t=Math.min(t,e.remainingLength),Z.decode(nl(e,t))},hr=e=>{const t=or(e);if(!t||"data"!==t.name)return null;if(e.remainingLength<8)return null;const i=dl(e);e.skip(4);const r=nl(e,t.contentSize-8);switch(i){case 1:return Z.decode(r);case 2:return new TextDecoder("utf-16be").decode(r);case 13:return new ct(r,"image/jpeg");case 14:return new ct(r,"image/png");case 27:return new ct(r,"image/bmp");default:return r}},fr=16,mr=new Uint32Array(256),pr=new Uint32Array(256),gr=new Uint32Array(256),kr=new Uint32Array(256),yr=new Uint32Array(256),br=new Uint32Array(256),Tr=new Uint32Array(10);let vr=!1;class Sr{constructor(){this.roundkey=new Uint32Array(44),this.iv=new Uint32Array(fr/Uint32Array.BYTES_PER_ELEMENT),this.in=new Uint8Array(fr),this.out=new Uint8Array(fr),this.inView=new DataView(this.in.buffer),this.outView=new DataView(this.out.buffer)}init({key:e,iv:t}){j(16===e.byteLength),j(16===t.byteLength),vr||(()=>{const e=new Uint8Array(256),t=new Uint8Array(256),i=new Uint8Array(256);for(let s=0,a=1;s<256;s++)i[s]=a,t[a]=s,a=a^a<<1^(128&a?283:0);const r=(e,r)=>e&&r?i[(t[e]+t[r])%255]:0;e[0]=99;for(let s=1;s<256;s++){const r=i[255-t[s]];let n=r^r<<1^r<<2^r<<3^r<<4;n=n>>>8^255&n^99,e[s]=n}for(let s=0;s<256;s++){const t=e[s],i=e.indexOf(s);mr[s]=t<<24|t<<16|t<<8|t,br[s]=i<<24|i<<16|i<<8|i;const n=r(i,14)<<24|r(i,9)<<16|r(i,13)<<8|r(i,11);pr[s]=n,gr[s]=n>>>8|n<<24,kr[s]=n>>>16|n<<16,yr[s]=n>>>24|n<<8}let n=1;for(let s=0;s<10;s++)Tr[s]=n<<24,n=n<<1^(128&n?283:0);vr=!0})();const i=new DataView(e.buffer,e.byteOffset,e.byteLength),r=new DataView(t.buffer,t.byteOffset,t.byteLength);this.roundkey[0]=i.getUint32(0,!1),this.roundkey[1]=i.getUint32(4,!1),this.roundkey[2]=i.getUint32(8,!1),this.roundkey[3]=i.getUint32(12,!1),this.iv[0]=r.getUint32(0,!1),this.iv[1]=r.getUint32(4,!1),this.iv[2]=r.getUint32(8,!1),this.iv[3]=r.getUint32(12,!1);for(let n=4;n<44;n+=4){const e=this.roundkey[n-1];this.roundkey[n]=this.roundkey[n-4]^4278190080&mr[e>>>16&255]^16711680&mr[e>>>8&255]^65280&mr[e>>>0&255]^255&mr[e>>>24&255]^Tr[n/4-1],this.roundkey[n+1]=this.roundkey[n-3]^this.roundkey[n],this.roundkey[n+2]=this.roundkey[n-2]^this.roundkey[n+1],this.roundkey[n+3]=this.roundkey[n-1]^this.roundkey[n+2]}for(let n=0,s=40;n>>24&255]]^gr[255&mr[t>>>16&255]]^kr[255&mr[t>>>8&255]]^yr[255&mr[t>>>0&255]]}}decrypt(){let e=this.inView.getUint32(0,!1)^this.roundkey[0],t=this.inView.getUint32(4,!1)^this.roundkey[1],i=this.inView.getUint32(8,!1)^this.roundkey[2],r=this.inView.getUint32(12,!1)^this.roundkey[3];const n=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),a=this.inView.getUint32(8,!1),o=this.inView.getUint32(12,!1);let l,c,u,d;for(let g=1;g<10;g++){const n=4*g;l=pr[e>>>24]^gr[r>>>16&255]^kr[i>>>8&255]^yr[255&t]^this.roundkey[n],c=pr[t>>>24]^gr[e>>>16&255]^kr[r>>>8&255]^yr[255&i]^this.roundkey[n+1],u=pr[i>>>24]^gr[t>>>16&255]^kr[e>>>8&255]^yr[255&r]^this.roundkey[n+2],d=pr[r>>>24]^gr[i>>>16&255]^kr[t>>>8&255]^yr[255&e]^this.roundkey[n+3],e=l,t=c,i=u,r=d}const h=4278190080&br[e>>>24&255]^16711680&br[r>>>16&255]^65280&br[i>>>8&255]^255&br[t>>>0&255]^this.roundkey[40],f=4278190080&br[t>>>24&255]^16711680&br[e>>>16&255]^65280&br[r>>>8&255]^255&br[i>>>0&255]^this.roundkey[41],m=4278190080&br[i>>>24&255]^16711680&br[t>>>16&255]^65280&br[e>>>8&255]^255&br[r>>>0&255]^this.roundkey[42],p=4278190080&br[r>>>24&255]^16711680&br[i>>>16&255]^65280&br[t>>>8&255]^255&br[e>>>0&255]^this.roundkey[43];this.outView.setUint32(0,h^this.iv[0],!1),this.outView.setUint32(4,f^this.iv[1],!1),this.outView.setUint32(8,m^this.iv[2],!1),this.outView.setUint32(12,p^this.iv[3],!1),this.iv[0]=n,this.iv[1]=s,this.iv[2]=a,this.iv[3]=o}}class wr extends ir{constructor(e){super(e),this.moovSlice=null,this.currentTrack=null,this.tracks=[],this.metadataPromise=null,this.movieTimescale=-1,this.movieDurationInTimescale=-1,this.isQuickTime=!1,this.metadataTags={},this.currentMetadataKeys=null,this.isFragmented=!1,this.fragmentTrackDefaults=[],this.psshBoxes=[],this.currentFragment=null,this.lastReadFragment=null,this.decryptionKeyCache=new Map,this.reader=e._reader}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.tracks.map(e=>e.trackBacking)})}getMimeType(){return z(this,null,function*(){yield this.readMetadata();const e=yield this.getTrackBackings(),t=yield Promise.all(e.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)}),hasAudio:this.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)}),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return z(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){let e=0,t=!1,i=!1;for(;;){let r=this.reader.requestSliceRange(e,8,16);if(Xe(r)&&(r=yield r),!r)break;const n=e,s=or(r);if(!s)break;if("ftyp"===s.name||"styp"===s.name){const e=Tl(r,4);this.isQuickTime="qt "===e}else{if("moov"===s.name){let e=this.reader.requestSlice(r.filePos,s.contentSize);if(Xe(e)&&(e=yield e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice);for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}t=this.isFragmented&&null!==this.reader.fileSize&&this.reader.fileSize>n+s.totalSize,i=!0;break}if("moof"===s.name){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');yield this.copyMetadataFromInitInput(this.input._initInput),t=!1,i=!0;break}}e=n+s.totalSize}if(!i&&this.input._initInput&&(yield this.copyMetadataFromInitInput(this.input._initInput)),t){j(null!==this.reader.fileSize);let e=this.reader.requestSlice(this.reader.fileSize-4,4);Xe(e)&&(e=yield e),j(e);const t=dl(e),i=this.reader.fileSize-t;if(i>=0&&i<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(i,8,16);if(Xe(e)&&(e=yield e),e){const t=or(e);if(t&&"mfra"===t.name){let i=this.reader.requestSlice(e.filePos,t.contentSize);Xe(i)&&(i=yield i),i&&this.readContiguousBoxes(i)}}}}}))()}copyMetadataFromInitInput(e){return z(this,null,function*(){const t=yield e._getDemuxer();if(t.constructor!==wr)throw new Error("Init input must match the input's format.");yield t.readMetadata(),this.movieTimescale=t.movieTimescale,this.movieDurationInTimescale=t.movieDurationInTimescale,this.metadataTags=t.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=t.fragmentTrackDefaults,this.psshBoxes=t.psshBoxes;for(const e of t.tracks){const t={id:e.id,demuxer:this,trackBacking:null,disposition:e.disposition,timescale:e.timescale,durationInMediaTimescale:e.durationInMediaTimescale,durationInMovieTimescale:e.durationInMovieTimescale,rotation:e.rotation,internalCodecId:e.internalCodecId,name:e.name,languageCode:e.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:e.editListPreviousSegmentDurations,editListOffset:e.editListOffset,encryptionInfo:e.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:e.info};if(e.trackBacking)if(j(t.info),"video"===t.info.type&&-1!==t.info.width){const e=t;t.trackBacking=new Ir(e),this.tracks.push(t)}else if("audio"===t.info.type&&-1!==t.info.numberOfChannels){const e=t;t.trackBacking=new xr(e),this.tracks.push(t)}}})}getSampleTableForTrack(e){var t,i;if(e.sampleTable)return e.sampleTable;const r={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=r,null===e.sampleTableByteOffset)return r;j(this.moovSlice);const n=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(n),this.currentTrack=null;if("audio"===(null==(t=e.info)?void 0:t.type)&&e.info.codec&&Ri.includes(e.info.codec)&&0===r.sampleCompositionTimeOffsets.length){j("audio"===(null==(i=e.info)?void 0:i.type));const t=Vi(e.info.codec),n=[],s=[];for(let i=0;ie.startIndex),u=r.sampleTimingEntries[c],d=pe(r.sampleTimingEntries,l,e=>e.startIndex),h=r.sampleTimingEntries[d],f=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,m=h.startDecodeTimestamp+(l-h.startIndex)*h.delta-f,p=X(n);p&&p.delta===m?p.count++:n.push({startIndex:a.startChunkIndex+i,startDecodeTimestamp:f,count:1,delta:m});const g=a.samplesPerChunk*t.sampleSize*e.info.numberOfChannels;s.push(g)}a.startSampleIndex=a.startChunkIndex,a.samplesPerChunk=1}r.sampleTimingEntries=n,r.sampleSizes=s}if(r.sampleCompositionTimeOffsets.length>0){r.presentationTimestamps=[];for(const e of r.sampleTimingEntries)for(let t=0;te.presentationTimestamp-t.presentationTimestamp),r.presentationTimestampIndexMap=Array(r.presentationTimestamps.length).fill(-1);for(let e=0;ee.moofOffset===s.moofOffset);if(r)Rr(e,r.timestamp);else{const t=pe(i,s.moofOffset-1,e=>e.moofOffset);if(-1!==t){const r=i[t];Rr(e,r.endTimestamp)}}e.startTimestampIsFinal=!0}const r=pe(i,e.startTimestamp,e=>e.startTimestamp);if(-1!==r&&i[r].moofOffset===s.moofOffset||i.splice(r+1,0,{moofOffset:s.moofOffset,startTimestamp:e.startTimestamp,endTimestamp:e.endTimestamp}),e.encryptionAuxInfo&&t.encryptionInfo){const i=yield Mr(this.reader,t.encryptionInfo,e.encryptionAuxInfo);for(let t=0;t0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;Ae(t.languageCode)||(t.languageCode=xe)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=Tl(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:_({},le),avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=fe,this.readContiguousBoxes(e.slice(pe,me.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const i=sl(e);e.skip(3);const r=dl(e);for(let n=0;n0&&(1===a?(e.skip(4),l=8*dl(e),e.skip(8)):2===a&&(e.skip(4),c=bl(e),o=dl(e),e.skip(4),l=dl(e),u=dl(e),e.skip(8))),t.info.numberOfChannels=o,t.info.sampleRate=c,t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+n.totalSize-e.filePos));const d="enca"===s?t.frmaCodecString:s;if(t.frmaCodecString=null,"mp4a"===d);else if("opus"===d)t.info.codec="opus",t.info.sampleRate=Wi;else if("flac"===d)t.info.codec="flac";else if("ulaw"===d)t.info.codec="ulaw";else if("alaw"===d)t.info.codec="alaw";else if("ac-3"===d)t.info.codec="ac3";else if("ec-3"===d)t.info.codec="eac3";else if(zi.includes(d))t.info.codec="dts",t.info.dtsFormat=d;else if("twos"===d)8===l?t.info.codec="pcm-s8":16===l?t.info.codec=t.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(lt._warn(`Unsupported sample size ${l} for codec 'twos'.`),t.info.codec=null);else if("sowt"===d)8===l?t.info.codec="pcm-s8":16===l?t.info.codec="pcm-s16":(lt._warn(`Unsupported sample size ${l} for codec 'sowt'.`),t.info.codec=null);else if("raw "===d)t.info.codec="pcm-u8";else if("in24"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if("in32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if("fl32"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if("fl64"===d)t.info.codec=t.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if("ipcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?16===e?t.info.codec="pcm-s16":24===e?t.info.codec="pcm-s24":32===e?t.info.codec="pcm-s32":(lt._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null):16===e?t.info.codec="pcm-s16be":24===e?t.info.codec="pcm-s24be":32===e?t.info.codec="pcm-s32be":(lt._warn(`Invalid ipcm sample size ${e}.`),t.info.codec=null)}else if("fpcm"===d){const e=t.info.pcmSampleSize;t.info.pcmLittleEndian?32===e?t.info.codec="pcm-f32":64===e?t.info.codec="pcm-f64":(lt._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null):32===e?t.info.codec="pcm-f32be":64===e?t.info.codec="pcm-f64be":(lt._warn(`Invalid fpcm sample size ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=l+7>>3,i=Boolean(1&u),r=Boolean(2&u),n=4&u?-1:0;l>0&&l<=64&&(i?32===l&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):n&1<0?(t.encryptionInfo.defaultCryptByteBlock=r>>4,t.encryptionInfo.defaultSkipByteBlock=15&r):(t.encryptionInfo.defaultCryptByteBlock=0,t.encryptionInfo.defaultSkipByteBlock=0),t.encryptionInfo.defaultIsProtected=0!==sl(e),t.encryptionInfo.defaultPerSampleIvSize=sl(e),t.encryptionInfo.defaultKid=he(nl(e,16)),t.encryptionInfo.defaultIsProtected&&0===t.encryptionInfo.defaultPerSampleIvSize){const i=sl(e),r=new Uint8Array(16);r.set(nl(e,i),0),t.encryptionInfo.defaultConstantIv=r}}break;case"avcC":{const t=this.currentTrack;if(!t)break;if(j(t.info),0===me.contentSize)break;t.info.codecDescription=nl(e,me.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;if(j(t.info),0===me.contentSize)break;t.info.codecDescription=nl(e,me.contentSize)}break;case"vpcC":{const i=this.currentTrack;if(!i)break;j("video"===(null==(t=i.info)?void 0:t.type)),e.skip(4);const r=sl(e),n=sl(e),s=sl(e),a=s>>4,o=s>>1&7,l=1&s,c=sl(e),u=sl(e),d=sl(e);i.info.vp9CodecInfo={profile:r,level:n,bitDepth:a,chromaSubsampling:o,videoFullRangeFlag:l,colourPrimaries:c,transferCharacteristics:u,matrixCoefficients:d}}break;case"av1C":{const t=this.currentTrack;if(!t)break;j("video"===(null==(i=t.info)?void 0:i.type)),e.skip(1);const o=sl(e),l=o>>5,c=31&o,u=sl(e),d=u>>7,h=u>>6&1,f=u>>4&1,m=u>>3&1,p=u>>2&1,g=3&u,k=2===l&&h?u>>5&1?12:10:h?10:8;e.skip(1);const y=nl(e,me.contentSize-4),b=ii(y);t.info.av1CodecInfo={profile:l,level:c,tier:d,bitDepth:k,monochrome:f,chromaSubsamplingX:m,chromaSubsamplingY:p,chromaSamplePosition:g,videoFullRangeFlag:null!=(r=null==b?void 0:b.videoFullRangeFlag)?r:0,colourPrimaries:null!=(n=null==b?void 0:b.colourPrimaries)?n:2,transferCharacteristics:null!=(s=null==b?void 0:b.transferCharacteristics)?s:2,matrixCoefficients:null!=(a=null==b?void 0:b.matrixCoefficients)?a:2}}break;case"colr":{const t=this.currentTrack;if(!t)break;j("video"===(null==(o=t.info)?void 0:o.type));const i=Tl(e,4);if("nclx"!==i&&"nclc"!==i)break;const r=ol(e),n=ol(e),s=ol(e);let a;"nclx"===i&&(a=Boolean(128&sl(e))),t.info.colorSpace={primaries:ie[r],transfer:ne[n],matrix:ae[s],fullRange:a}}break;case"pasp":{const t=this.currentTrack;if(!t)break;j("video"===(null==(l=t.info)?void 0:l.type));const i=dl(e),r=dl(e);i>0&&r>0&&(i>r?t.info.squarePixelWidth=Math.round(t.info.width*i/r):t.info.squarePixelHeight=Math.round(t.info.height*r/i))}break;case"esds":{const t=this.currentTrack;if(!t||"audio"!==(null==(c=t.info)?void 0:c.type))break;e.skip(4);j(3===sl(e)),ur(e),e.skip(2);const i=sl(e),r=0!==(64&i),n=0!==(32&i);if(0!==(128&i)&&e.skip(2),r){const t=sl(e);e.skip(t)}n&&e.skip(2);j(4===sl(e));const s=ur(e),a=e.filePos,o=sl(e);if(64===o||103===o?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===o,objectType:null}):105===o||107===o?t.info.codec="mp3":221===o?t.info.codec="vorbis":169===o?t.info.codec="dts":lt._warn(`Unsupported audio codec (objectTypeIndication ${o}) - discarding track.`),e.skip(12),s>e.filePos-a){j(5===sl(e));const i=ur(e);if(t.info.codecDescription=nl(e,i),"aac"===t.info.codec){const e=pt(t.info.codecDescription);null!==e.outputNumberOfChannels&&(t.info.numberOfChannels=e.outputNumberOfChannels),null!==e.outputSampleRate&&(t.info.sampleRate=e.outputSampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(u=t.info)?void 0:u.type)),t.info.pcmLittleEndian=!!(255&ol(e))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(d=t.info)?void 0:d.type)),e.skip(4);const i=sl(e);t.info.pcmLittleEndian=Boolean(1&i),t.info.pcmSampleSize=sl(e)}break;case"dOps":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(h=t.info)?void 0:h.type)),e.skip(1);const i=sl(e),r=ol(e),n=dl(e),s=cl(e),a=sl(e);let o;o=0!==a?nl(e,2+i):new Uint8Array(0);const l=new Uint8Array(19+o.byteLength),c=new DataView(l.buffer);c.setUint32(0,1332770163,!1),c.setUint32(4,1214603620,!1),c.setUint8(8,1),c.setUint8(9,i),c.setUint16(10,r,!0),c.setUint32(12,n,!0),c.setInt16(16,s,!0),c.setUint8(18,a),l.set(o,19),t.info.codecDescription=l,t.info.numberOfChannels=i}break;case"dfLa":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(f=t.info)?void 0:f.type)),e.skip(4);const i=127,r=128,n=e.filePos;for(;e.filePos>>12,n=1+(i>>9&7);t.info.sampleRate=r,t.info.numberOfChannels=n,e.skip(20)}else e.skip(s);if(n&r)break}const s=e.filePos;e.filePos=n;const a=nl(e,s-n),o=new Uint8Array(4+a.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(a,4),t.info.codecDescription=o}break;case"dac3":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(m=t.info)?void 0:m.type));const i=nl(e,3),r=new ht(i),n=r.readBits(2);r.skipBits(8);const s=r.readBits(3),a=r.readBits(1);n<3&&(t.info.sampleRate=yt[n]),t.info.numberOfChannels=ui[s]+a}break;case"dec3":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(p=t.info)?void 0:p.type));const i=(e=>{if(e.length<2)return null;const t=new ht(e),i=t.readBits(13),r=t.readBits(3),n=[];for(let s=0;s<=r&&!(Math.ceil(t.pos/8)+3>e.length);s++){const e=t.readBits(2),i=t.readBits(5);t.skipBits(1),t.skipBits(1);const r=t.readBits(3),s=t.readBits(3),a=t.readBits(1);t.skipBits(3);const o=t.readBits(4);let l=0;o>0?l=t.readBits(9):t.skipBits(1),n.push({fscod:e,fscod2:null,bsid:i,bsmod:r,acmod:s,lfeon:a,numDepSub:o,chanLoc:l})}return 0===n.length?null:{dataRate:i,substreams:n}})(nl(e,me.contentSize));if(!i){lt._warn("Invalid dec3 box contents, ignoring.");break}const r=pi(i);null!==r&&(t.info.sampleRate=r),t.info.numberOfChannels=gi(i)}break;case"ddts":{const t=this.currentTrack;if(!t)break;j("audio"===(null==(g=t.info)?void 0:g.type));const i=(e=>{if(e.length<20)return null;const t=J(e),i=t.getUint32(0);if(0===i)return null;const r=new ht(e);r.seekToByte(13);const n=r.readBits(2);r.skipBits(5);const s=r.readBits(1),a=r.readBits(6);r.skipBits(14),r.skipBits(1),r.skipBits(3);const o=r.readBits(16);let l=null;return 0!==o?l=Ei(o):ae.id===i);if(!r)break;const n=dl(e),s=(12&n)>>2,a=3&n,o=[sl,ol,ll,dl],l=o[(48&n)>>4],c=o[s],u=o[a],d=dl(e);for(let h=0;he.timestamp-t.timestamp);for(let e=0;e({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let n=0;ne.id===c);if(!u)break;const d=this.fragmentTrackDefaults.find(e=>e.trackId===c);this.currentTrack=u,u.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:null!=(y=null==d?void 0:d.defaultSampleDescriptionIndex)?y:null,defaultSampleDuration:null!=(b=null==d?void 0:d.defaultSampleDuration)?b:null,defaultSampleSize:null!=(T=null==d?void 0:d.defaultSampleSize)?T:null,defaultSampleFlags:null!=(v=null==d?void 0:d.defaultSampleFlags)?v:null,startTimestamp:null,encryptionAuxInfo:null},i?u.currentFragmentState.baseDataOffset=pl(e):l&&(u.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),r&&(u.currentFragmentState.sampleDescriptionIndex=dl(e)),n&&(u.currentFragmentState.defaultSampleDuration=dl(e)),s&&(u.currentFragmentState.defaultSampleSize=dl(e)),a&&(u.currentFragmentState.defaultSampleFlags=dl(e)),o&&(u.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;j(t.currentFragmentState);const i=sl(e);e.skip(3);const r=0===i?dl(e):pl(e);t.currentFragmentState.startTimestamp=r}break;case"trun":{const t=this.currentTrack;if(!t)break;j(this.currentFragment),j(t.currentFragmentState);const i=sl(e),r=ll(e),n=Boolean(1&r),s=Boolean(4&r),a=Boolean(256&r),o=Boolean(512&r),l=Boolean(1024&r),c=Boolean(2048&r),u=dl(e);let d=null;n&&(d=fl(e));let h,f=null;s&&(f=dl(e)),this.currentFragment.trackData.has(t.id)?(h=this.currentFragment.trackData.get(t.id),null!==d&&(h.currentOffset=t.currentFragmentState.baseDataOffset+d)):(h={track:t,currentTimestamp:0,currentOffset:t.currentFragmentState.baseDataOffset+(null!=d?d:0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(t.id,h));for(let m=0;m0&&(n=nl(e,r));const s=Dr(t);s.defaultSampleInfoSize=i,s.sampleSizes=n,s.sampleCount=r}break;case"saio":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=sl(e);if(1&ll(e)){const i=Tl(e,4),r=dl(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const r=dl(e);if(0===r)break;r>1&<._warn("Multiple saio entries are not supported; using the first offset only.");let n=0===i?dl(e):Number(pl(e));this.currentFragment&&(n+=this.currentFragment.moofOffset);Dr(t).offset=n}break;case"senc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;j(this.currentFragment);const i=this.currentFragment.trackData.get(t.id);if(!i)break;e.skip(1);const r=ll(e),n=Boolean(2&r),s=dl(e),a=t.encryptionInfo.defaultPerSampleIvSize;j(null!==a);for(let o=0;o0?r.set(nl(e,a),0):r.set(t.encryptionInfo.defaultConstantIv,0);let s=null;if(n){const t=ol(e);s=[];for(let i=0;i0&&(null!=(re=this.metadataTags).trackNumber||(re.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=(se=this.metadataTags).tracksTotal||(se.tracksTotal=i))}break;case"trkn":if(n instanceof Uint8Array&&n.length>=6){const e=J(n),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&(null!=(oe=this.metadataTags).trackNumber||(oe.trackNumber=t)),i>0&&(null!=(ce=this.metadataTags).tracksTotal||(ce.tracksTotal=i))}break;case"disc":case"disk":if(n instanceof Uint8Array&&n.length>=6){const e=J(n),t=e.getUint16(2,!1),i=e.getUint16(4,!1);t>0&&(null!=(ue=this.metadataTags).discNumber||(ue.discNumber=t)),i>0&&(null!=(de=this.metadataTags).discsTotal||(de.discsTotal=i))}}}}}return e.filePos=ge,!0}}class Pr{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.tracks)if(r.trackBacking.getType()===t&&i++,r===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){var e;const t=this.internalTrack;if(t.durationInMediaTimescale<=0)return null;j(t.trackBacking);const i=yield t.trackBacking.getFirstPacket({metadataOnly:!0});return(null!=(e=null==i?void 0:i.timestamp)?e:0)+t.durationInMediaTimescale/t.timescale})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getFirstPacket(e){return z(this,null,function*(){const t=yield this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)})}mapTimestampIntoTimescale(e){return Ce(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}getPacket(e,t){return z(this,null,function*(){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=Cr(r,i),s=yield this.fetchPacketForSampleIndex(n,t);return Ar(r)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=pe(t.presentationTimestamps,i,e=>e.presentationTimestamp);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const r=Te(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=i);return{sampleIndex:-1!==r?t.presentationTimestamps[r].sampleIndex:-1,correctSampleFound:-1!==r&&i{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>r.sampleIndex);if(-1!==t)return{sampleIndex:t,correctSampleFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.samples.findIndex(e=>e.isKeyFrame);return j(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)})}fetchPacketForSampleIndex(e,t){return z(this,null,function*(){if(-1===e)return null;const i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=Er(i,e);if(!r)return null;let n;if(t.metadataOnly)n=rr;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.sampleOffset,r.sampleSize);if(Xe(t)&&(t=yield t),!t)return null;if(n=nl(t,r.sampleSize),this.internalTrack.encryptionInfo){let t=null;if(this.internalTrack.encryptionAuxInfo){const i=yield Mr(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);ee.timestamp),f=-1!==h?this.internalTrack.fragmentLookupTable[h]:null,m=pe(this.internalTrack.fragmentPositionCache,i,e=>e.startTimestamp),p=-1!==m?this.internalTrack.fragmentPositionCache[m]:null,g=Math.max(null!=(s=null==f?void 0:f.moofOffset)?s:0,null!=(a=null==p?void 0:p.moofOffset)?a:0)||null;let k;for(e?null===g||e.moofOffset>=g?(k=e.moofOffset+e.moofSize,c=e):k=g:k=null!=g?g:0;;){if(c){const e=c.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=l.reader.requestSliceRange(k,8,16);if(Xe(e)&&(e=yield e),!e)break;const i=k,s=or(e);if(!s)break;if("moof"===s.name){c=yield l.readFragment(i);const{sampleIndex:e,correctSampleFound:r}=t(c);if(r)return this.fetchPacketInFragment(c,e,n);-1!==e&&(u=c,d=e)}k=i+s.totalSize}if(f&&(!u||u.moofOffsetz(this,null,function*(){var e,t,i,r,n,s,a;if("avc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("hevc"!==this.internalTrack.info.codec||this.internalTrack.info.codecDescription)if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo&&(2!==(a=this.internalTrack.info.vp9CodecInfo).colourPrimaries||2!==a.transferCharacteristics||2!==a.matrixCoefficients))if("av1"!==this.internalTrack.info.codec||this.internalTrack.info.av1CodecInfo&&(e=>2!==e.colourPrimaries||2!==e.transferCharacteristics||2!==e.matrixCoefficients)(this.internalTrack.info.av1CodecInfo)){if("prores"===this.internalTrack.info.codec&&!this.internalTrack.info.proresCodecInfo){const e=yield this.getFirstPacket({});this.internalTrack.info.proresCodecInfo=e&&ri(e.data)}}else{const e=yield this.getFirstPacket({}),t=e&&ii(e.data);t&&(this.internalTrack.info.av1CodecInfo=t)}else{const t=yield this.getFirstPacket({}),i=t&&ei(t.data);i&&(this.internalTrack.info.vp9CodecInfo=R(_({},null!=(e=this.internalTrack.info.vp9CodecInfo)?e:i),{videoFullRangeFlag:i.videoFullRangeFlag,colourPrimaries:i.colourPrimaries,transferCharacteristics:i.transferCharacteristics,matrixCoefficients:i.matrixCoefficients}))}else{const e=yield this.getFirstPacket({});this.internalTrack.info.hevcCodecInfo=e&&Wt(e.data)}else{const e=yield this.getFirstPacket({});this.internalTrack.info.avcCodecInfo=e&&Ft(e.data)}if(!oe(this.internalTrack.info.colorSpace)){const e=Ui(this.internalTrack.info);null!=(t=this.internalTrack.info.colorSpace).primaries||(t.primaries=e.primaries),null!=(i=this.internalTrack.info.colorSpace).transfer||(i.transfer=e.transfer),null!=(r=this.internalTrack.info.colorSpace).matrix||(r.matrix=e.matrix),null!=(n=this.internalTrack.info.colorSpace).fullRange||(n.fullRange=e.fullRange)}const o={codec:Li(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(s=this.internalTrack.info.codecDescription)?s:void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(o.displayAspectWidth=this.internalTrack.info.squarePixelWidth,o.displayAspectHeight=this.internalTrack.info.squarePixelHeight),o}))():null})}}class xr extends Pr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return z(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>z(this,null,function*(){var e;if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=yield this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&xi(e.data)}return{codec:qi(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}}))():null})}}const Cr=(e,t)=>{if(e.presentationTimestamps){const i=pe(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===i?-1:e.presentationTimestamps[i].sampleIndex}{const i=pe(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===i)return-1;const r=e.sampleTimingEntries[i];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},Br=(e,t)=>{var i;if(!e.keySampleIndices)return Cr(e,t);if(e.presentationTimestamps){const i=pe(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===i)return-1;for(let t=i;t>=0;t--){const i=e.presentationTimestamps[t].sampleIndex;if(-1!==me(e.keySampleIndices,i,e=>e))return i}return-1}{const r=Cr(e,t),n=pe(e.keySampleIndices,r,e=>e);return null!=(i=e.keySampleIndices[n])?i:-1}},Er=(e,t)=>{const i=pe(e.sampleTimingEntries,t,e=>e.startIndex),r=e.sampleTimingEntries[i];if(!r||r.startIndex+r.count<=t)return null;let n=r.startDecodeTimestamp+(t-r.startIndex)*r.delta;const s=pe(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),a=e.sampleCompositionTimeOffsets[s];a&&t-a.startIndexe.startSampleIndex),c=e.sampleToChunk[l];j(c);const u=c.startChunkIndex+Math.floor((t-c.startSampleIndex)/c.samplesPerChunk),d=e.chunkOffsets[u],h=c.startSampleIndex+(u-c.startChunkIndex)*c.samplesPerChunk;let f=0,m=d;if(1===e.sampleSizes.length)m+=o*(t-h),f+=o*c.samplesPerChunk;else for(let g=h;ge)}},_r=(e,t)=>{var i;if(!e.keySampleIndices)return t+1;const r=pe(e.keySampleIndices,t,e=>e);return null!=(i=e.keySampleIndices[r+1])?i:-1},Rr=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const i of e.samples)i.presentationTimestamp+=t;for(const i of e.presentationTimestamps)i.presentationTimestamp+=t},Fr=e=>{const[t,i]=e,r=Math.atan2(i,t);return Number.isFinite(r)?r*(180/Math.PI):0},Ar=e=>0===e.sampleSizes.length,Dr=e=>{var t,i,r;return e.currentFragmentState?null!=(i=(t=e.currentFragmentState).encryptionAuxInfo)?i:t.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}:null!=(r=e.encryptionAuxInfo)?r:e.encryptionAuxInfo={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}},Mr=(e,t,i)=>z(null,null,function*(){if(i.resolved)return i.resolved;if(null===i.offset||0===i.sampleCount)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(i.defaultSampleInfoSize>0)r=i.defaultSampleInfoSize*i.sampleCount;else{j(i.sampleSizes);for(let e=0;e0?i.defaultSampleInfoSize:i.sampleSizes[e],o=new Uint8Array(16);s>0?o.set(nl(n,s),0):o.set(t.defaultConstantIv,0);let l=null;if(r>s){const e=ol(n);l=[];for(let t=0;te.defaultConstantIv?{iv:e.defaultConstantIv,subsamples:null}:null,Or=(e,t,i,r)=>z(null,null,function*(){var n;j(e.encryptionInfo);const s=e.encryptionInfo;j(null!==s.defaultKid);const a=s.defaultKid;let o;const l=e.demuxer.decryptionKeyCache.get(a);if(l)o=yield l;else{if(!(null==(n=e.demuxer.input._formatOptions.isobmff)?void 0:n.resolveKeyId))throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");const t=z(null,null,function*(){let t=e.demuxer.psshBoxes;if(r){t=[...t,...r.psshBoxes].filter(e=>null===e.keyIds||e.keyIds.includes(a));for(let e=0;e{j(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;iz(null,null,function*(){const n=new Uint8Array(16);n.set(i.iv,0);const s=yield crypto.subtle.importKey("raw",e,{name:"AES-CTR"},!1,["decrypt"]),a=e=>z(null,null,function*(){const t=yield crypto.subtle.decrypt({name:"AES-CTR",counter:n,length:64},s,e);return new Uint8Array(t)});if(!i.subsamples)return a(r);j(null!==t.defaultCryptByteBlock&&null!==t.defaultSkipByteBlock);const o=Ur(i.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock);let l=0;for(const e of o)for(const t of e.perSubsample)l+=t.length;const c=new Uint8Array(l);let u=0;for(const e of o)for(const t of e.perSubsample)c.set(r.subarray(t.offset,t.offset+t.length),u),u+=t.length;const d=yield a(c),h=new Uint8Array(r);let f=0;for(const e of o)for(const t of e.perSubsample)h.set(d.subarray(f,f+t.length),t.offset),f+=t.length;return h}),Lr=(e,t,i,r)=>{const n=new Sr;n.init({key:e,iv:i.iv});const s=t.defaultCryptByteBlock,a=t.defaultSkipByteBlock;if(j(null!==s&&null!==a),!i.subsamples){const e=new Uint8Array(r),t=Math.floor(r.length/16);for(let i=0;i{const r=[],n=0!==t||0!==i;let s=0;for(const a of e){s+=a.clearLen;const e=[];if(n){let r=a.protectedLen,n=s;for(;r>0&&!(r<16*t);){const s=16*t;e.push({offset:n,length:s}),n+=s,r-=s;const a=Math.min(16*i,r);n+=a,r-=a}s+=a.protectedLen}else a.protectedLen>0&&e.push({offset:s,length:a.protectedLen}),s+=a.protectedLen;r.push({perSubsample:e})}return r};var qr,Wr;(Wr=qr||(qr={}))[Wr.EBML=440786851]="EBML",Wr[Wr.EBMLVersion=17030]="EBMLVersion",Wr[Wr.EBMLReadVersion=17143]="EBMLReadVersion",Wr[Wr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",Wr[Wr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",Wr[Wr.DocType=17026]="DocType",Wr[Wr.DocTypeVersion=17031]="DocTypeVersion",Wr[Wr.DocTypeReadVersion=17029]="DocTypeReadVersion",Wr[Wr.Void=236]="Void",Wr[Wr.Segment=408125543]="Segment",Wr[Wr.SeekHead=290298740]="SeekHead",Wr[Wr.Seek=19899]="Seek",Wr[Wr.SeekID=21419]="SeekID",Wr[Wr.SeekPosition=21420]="SeekPosition",Wr[Wr.Duration=17545]="Duration",Wr[Wr.Info=357149030]="Info",Wr[Wr.TimestampScale=2807729]="TimestampScale",Wr[Wr.MuxingApp=19840]="MuxingApp",Wr[Wr.WritingApp=22337]="WritingApp",Wr[Wr.Tracks=374648427]="Tracks",Wr[Wr.TrackEntry=174]="TrackEntry",Wr[Wr.TrackNumber=215]="TrackNumber",Wr[Wr.TrackUID=29637]="TrackUID",Wr[Wr.TrackType=131]="TrackType",Wr[Wr.FlagEnabled=185]="FlagEnabled",Wr[Wr.FlagDefault=136]="FlagDefault",Wr[Wr.FlagForced=21930]="FlagForced",Wr[Wr.FlagOriginal=21934]="FlagOriginal",Wr[Wr.FlagHearingImpaired=21931]="FlagHearingImpaired",Wr[Wr.FlagVisualImpaired=21932]="FlagVisualImpaired",Wr[Wr.FlagCommentary=21935]="FlagCommentary",Wr[Wr.FlagLacing=156]="FlagLacing",Wr[Wr.Name=21358]="Name",Wr[Wr.Language=2274716]="Language",Wr[Wr.LanguageBCP47=2274717]="LanguageBCP47",Wr[Wr.CodecID=134]="CodecID",Wr[Wr.CodecPrivate=25506]="CodecPrivate",Wr[Wr.CodecDelay=22186]="CodecDelay",Wr[Wr.SeekPreRoll=22203]="SeekPreRoll",Wr[Wr.DefaultDuration=2352003]="DefaultDuration",Wr[Wr.Video=224]="Video",Wr[Wr.PixelWidth=176]="PixelWidth",Wr[Wr.PixelHeight=186]="PixelHeight",Wr[Wr.DisplayWidth=21680]="DisplayWidth",Wr[Wr.DisplayHeight=21690]="DisplayHeight",Wr[Wr.DisplayUnit=21682]="DisplayUnit",Wr[Wr.AlphaMode=21440]="AlphaMode",Wr[Wr.Audio=225]="Audio",Wr[Wr.SamplingFrequency=181]="SamplingFrequency",Wr[Wr.Channels=159]="Channels",Wr[Wr.BitDepth=25188]="BitDepth",Wr[Wr.SimpleBlock=163]="SimpleBlock",Wr[Wr.BlockGroup=160]="BlockGroup",Wr[Wr.Block=161]="Block",Wr[Wr.BlockAdditions=30113]="BlockAdditions",Wr[Wr.BlockMore=166]="BlockMore",Wr[Wr.BlockAdditional=165]="BlockAdditional",Wr[Wr.BlockAddID=238]="BlockAddID",Wr[Wr.BlockDuration=155]="BlockDuration",Wr[Wr.ReferenceBlock=251]="ReferenceBlock",Wr[Wr.Cluster=524531317]="Cluster",Wr[Wr.Timestamp=231]="Timestamp",Wr[Wr.Cues=475249515]="Cues",Wr[Wr.CuePoint=187]="CuePoint",Wr[Wr.CueTime=179]="CueTime",Wr[Wr.CueTrackPositions=183]="CueTrackPositions",Wr[Wr.CueTrack=247]="CueTrack",Wr[Wr.CueClusterPosition=241]="CueClusterPosition",Wr[Wr.Colour=21936]="Colour",Wr[Wr.MatrixCoefficients=21937]="MatrixCoefficients",Wr[Wr.TransferCharacteristics=21946]="TransferCharacteristics",Wr[Wr.Primaries=21947]="Primaries",Wr[Wr.Range=21945]="Range",Wr[Wr.Projection=30320]="Projection",Wr[Wr.ProjectionType=30321]="ProjectionType",Wr[Wr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",Wr[Wr.Attachments=423732329]="Attachments",Wr[Wr.AttachedFile=24999]="AttachedFile",Wr[Wr.FileDescription=18046]="FileDescription",Wr[Wr.FileName=18030]="FileName",Wr[Wr.FileMediaType=18016]="FileMediaType",Wr[Wr.FileData=18012]="FileData",Wr[Wr.FileUID=18094]="FileUID",Wr[Wr.Chapters=272869232]="Chapters",Wr[Wr.Tags=307544935]="Tags",Wr[Wr.Tag=29555]="Tag",Wr[Wr.Targets=25536]="Targets",Wr[Wr.TargetTypeValue=26826]="TargetTypeValue",Wr[Wr.TargetType=25546]="TargetType",Wr[Wr.TagTrackUID=25541]="TagTrackUID",Wr[Wr.TagEditionUID=25545]="TagEditionUID",Wr[Wr.TagChapterUID=25540]="TagChapterUID",Wr[Wr.TagAttachmentUID=25542]="TagAttachmentUID",Wr[Wr.SimpleTag=26568]="SimpleTag",Wr[Wr.TagName=17827]="TagName",Wr[Wr.TagLanguage=17530]="TagLanguage",Wr[Wr.TagString=17543]="TagString",Wr[Wr.TagBinary=17541]="TagBinary",Wr[Wr.ContentEncodings=28032]="ContentEncodings",Wr[Wr.ContentEncoding=25152]="ContentEncoding",Wr[Wr.ContentEncodingOrder=20529]="ContentEncodingOrder",Wr[Wr.ContentEncodingScope=20530]="ContentEncodingScope",Wr[Wr.ContentCompression=20532]="ContentCompression",Wr[Wr.ContentCompAlgo=16980]="ContentCompAlgo",Wr[Wr.ContentCompSettings=16981]="ContentCompSettings",Wr[Wr.ContentEncryption=20533]="ContentEncryption";const Hr=[qr.EBML,qr.Segment],Vr=[qr.SeekHead,qr.Info,qr.Cluster,qr.Tracks,qr.Cues,qr.Attachments,qr.Chapters,qr.Tags],jr=[...Hr,...Vr],Kr=16,Xr=e=>{if(e.remainingLength<1)return null;const t=sl(e);if(e.skip(-1),0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;return e.remainingLength{if(e.remainingLength<1)return null;const t=sl(e);if(0===t)return null;let i=1,r=128;for(;0===(t&r);)i++,r>>=1;if(e.remainingLength{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r{const t=Xr(e);if(null===t)return null;if(e.remainingLength{if(e.remainingLength<1)return null;if(255===sl(e))return;e.skip(-1);const t=$r(e);return null===t?null:72057594037927940!==t?t:void 0},Jr=e=>{j(e.remainingLength>=2);const t=Qr(e);if(null===t)return null;const i=Yr(e);return null===i?null:{id:t,size:i}},Zr=(e,t)=>{const i=nl(e,t);let r=0;for(;r{const i=nl(e,t);let r=0;for(;r{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?yl(e):bl(e)},rn=(e,t,i,r)=>z(null,null,function*(){const n=new Set(i);let s=t;for(;null===r||ss?r:s,found:!1}}),nn=(e,t,i,r)=>z(null,null,function*(){const n=B(2,16),s=new Set(i);let a=t;for(;ae.tracks.map(e=>e.trackBacking))})}getMimeType(){return z(this,null,function*(){yield this.readMetadata();const e=yield this.getTrackBackings(),t=yield Promise.all(e.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)})),hasAudio:this.segments.some(e=>e.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)})),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return z(this,null,function*(){yield this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&(yield this.loadSegmentMetadata(t)),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e=_(_({},e),t.metadataTags);return e})}readMetadata(){var e;return null!=(e=this.readMetadataPromise)?e:this.readMetadataPromise=(()=>z(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,Kr);if(Xe(t)&&(t=yield t),!t)break;const i=Jr(t);if(!i)break;const r=i.id;let n=i.size;const s=t.filePos;if(r===qr.EBML){bn(n);let e=this.reader.requestSlice(s,n);if(Xe(e)&&(e=yield e),!e)break;this.readContiguousElements(e)}else if(r===qr.Segment){if(yield this.readSegment(s,n),void 0===n)break;if(null===this.reader.fileSize)break}else if(r===qr.Cluster){if(null===this.reader.fileSize)break;if(void 0===n){n=(yield rn(this.reader,s,jr,this.reader.fileSize)).pos-s}const e=X(this.segments);e&&(e.elementEndPos=s+n)}bn(n),e=s+n}}))()}readSegment(e,t){return z(this,null,function*(){var i;this.currentSegment={seekHeadSeen:!1,infoSeen:!1,tracksSeen:!1,cuesSeen:!1,tagsSeen:!1,attachmentsSeen:!1,timestampScale:-1,timestampFactor:-1,duration:-1,seekEntries:[],tracks:[],cuePoints:[],dataStartPos:e,elementEndPos:void 0===t?null:e+t,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let r=e;for(;null===this.currentSegment.elementEndPos||re.id===s);if(-1!==l){const e=xn[l].flag;this.currentSegment[e]=!0,bn(a);let t=this.reader.requestSlice(o,a);Xe(t)&&(t=yield t),t&&this.readContiguousElements(t)}else if(s===qr.Tags||s===qr.Attachments){s===qr.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,bn(a);let e=this.reader.requestSlice(o,a);Xe(e)&&(e=yield e),e&&this.readContiguousElements(e)}else if(s===qr.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===a)break;r=o+a}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const t of this.currentSegment.seekEntries){const i=xn.find(e=>e.id===t.id);if(!i)continue;if(this.currentSegment[i.flag])continue;let r=this.reader.requestSliceRange(e+t.segmentPosition,2,Kr);if(Xe(r)&&(r=yield r),!r)continue;const n=Jr(r);if(!n)continue;const{id:s,size:a}=n;if(s!==i.id)continue;bn(a),this.currentSegment[i.flag]=!0;let o=this.reader.requestSlice(r.filePos,a);Xe(o)&&(o=yield o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const e of this.currentSegment.tracks)null!==e.defaultDurationNs&&(e.defaultDuration=this.currentSegment.timestampFactor*e.defaultDurationNs/1e9);const n=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const e of this.currentSegment.cuePoints){const t=n.get(e.trackId);t&&t.cuePoints.push(e)}for(const e of this.currentSegment.tracks){e.cuePoints.sort((e,t)=>e.time-t.time);for(let t=0;ta&&(a=e.cuePoints.length,s=e);for(const e of this.currentSegment.tracks)0===e.cuePoints.length&&(e.cuePoints=s.cuePoints);this.currentSegment=null})}readCluster(e,t){return z(this,null,function*(){var i;if((null==(i=t.lastReadCluster)?void 0:i.elementStartPos)===e)return t.lastReadCluster;let r=this.reader.requestSliceRange(e,2,Kr);Xe(r)&&(r=yield r),j(r);const n=e,s=Jr(r);j(s);j(s.id===qr.Cluster);let a=s.size;const o=r.filePos;if(void 0===a){a=(yield rn(this.reader,o,jr,t.elementEndPos)).pos-o}let l=this.reader.requestSlice(o,a);Xe(l)&&(l=yield l);const c={segment:t,elementStartPos:n,elementEndPos:o+a,dataStartPos:o,timestamp:-1,trackData:new Map};if(this.currentCluster=c,l){const e=this.readContiguousElements(l,jr);c.elementEndPos=e}for(const[,e]of c.trackData){const t=e.track;j(e.blocks.length>0);let i=!1;for(let n=0;n({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let n=0;n({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const r=e.blocks[e.presentationTimestamps[0].blockIndex],s=e.blocks[X(e.presentationTimestamps).blockIndex];e.startTimestamp=r.timestamp,e.endTimestamp=s.timestamp+s.duration;const a=pe(t.clusterPositionCache,e.startTimestamp,e=>e.startTimestamp);-1!==a&&t.clusterPositionCache[a].elementStartPos===n||t.clusterPositionCache.splice(a+1,0,{elementStartPos:c.elementStartPos,startTimestamp:e.startTimestamp})}return t.lastReadCluster=c,c})}getTrackDataInCluster(e,t){let i=e.trackData.get(t);if(!i){const r=e.segment.tracks.find(e=>e.id===t);if(!r)return null;i={track:r,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,i)}return i}expandLacedBlocks(e,t){var i;for(let r=0;r=2;){const i=e.filePos;if(!this.traverseElement(e,t))return i}return e.filePos}traverseElement(e,t){var i,r,n,s,a,o,l,c,u,d,h,f,m,p,g,k,y,b,T,v,S,w,P,I,x,C,B,E,F,A,D,M,N,O,z,L,U,q,W,H,V,X,$,G,Q,Y,J,ee,te,re,se;const oe=Jr(e);if(!oe)return!1;if(t&&t.includes(oe.id))return!1;const{id:ce,size:ue}=oe,de=e.filePos;switch(bn(ue),ce){case qr.DocType:this.isWebM="webm"===Zr(e,ue);break;case qr.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(de,ue)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case qr.SeekID:{const t=null==(i=this.currentSegment)?void 0:i.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=Gr(e,ue)}break;case qr.SeekPosition:{const t=null==(r=this.currentSegment)?void 0:r.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=Gr(e,ue)}break;case qr.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=Gr(e,ue),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case qr.Duration:if(!this.currentSegment)break;this.currentSegment.duration=tn(e,ue);break;case qr.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:R(_({},dt),{primary:!1}),trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(de,ue)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>{var t;return"decompress"!==(null==(t=e.data)?void 0:t.type)||e.scope!==Sn.Block||e.data.algorithm!==Pn.HeaderStripping})&&(lt._warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&-1!==this.currentTrack.id&&this.currentTrack.codecId&&this.currentTrack.info){const e=this.currentTrack.codecId.indexOf("/"),t=-1===e?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,e);if("video"===this.currentTrack.info.type&&-1!==this.currentTrack.info.width&&-1!==this.currentTrack.info.height){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,null!==this.currentTrack.info.displayWidth&&null!==this.currentTrack.info.displayHeight){const e=this.currentTrack.info.displayWidth*this.currentTrack.info.height,t=this.currentTrack.info.displayHeight*this.currentTrack.info.width;e>0&&t>0&&(e>t?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*e/t):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*t/e))}if(this.currentTrack.codecId===sn)this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(this.currentTrack.codecId===an)this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate;else if(t===on)this.currentTrack.info.codec="vp8";else if(t===ln)this.currentTrack.info.codec="vp9";else if(t===cn)this.currentTrack.info.codec="av1";else if(t===un){const e=this.currentTrack.codecPrivate?Z.decode(this.currentTrack.codecPrivate):"";Oi.includes(e)&&(this.currentTrack.info.codec="prores",this.currentTrack.info.proresFormat=e)}const e=this.currentTrack;this.currentTrack.trackBacking=new _n(e),this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type){t===dn?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===hn?this.currentTrack.info.codec="mp3":t===fn?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=Wi):t===mn?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===pn?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===gn?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===kn?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===yn?(this.currentTrack.info.codec="dts","A_DTS/EXPRESS"===this.currentTrack.codecId?this.currentTrack.info.dtsFormat="dtse":"A_DTS/LOSSLESS"===this.currentTrack.codecId&&(this.currentTrack.info.dtsFormat="dtsl")):"A_PCM/INT/LIT"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32"):"A_PCM/INT/BIG"===this.currentTrack.codecId?8===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-u8":16===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s16be":24===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-s24be":32===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-s32be"):"A_PCM/FLOAT/IEEE"===this.currentTrack.codecId&&(32===this.currentTrack.info.bitDepth?this.currentTrack.info.codec="pcm-f32":64===this.currentTrack.info.bitDepth&&(this.currentTrack.info.codec="pcm-f64"));const e=this.currentTrack;this.currentTrack.trackBacking=new Rn(e),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case qr.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=Gr(e,ue);break;case qr.TrackType:{if(!this.currentTrack)break;const t=Gr(e,ue);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:_({},le),alphaMode:!1,proresFormat:null}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null})}break;case qr.FlagEnabled:if(!this.currentTrack)break;Gr(e,ue)||(this.currentTrack=null);break;case qr.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!Gr(e,ue);break;case qr.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!Gr(e,ue);break;case qr.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!Gr(e,ue);break;case qr.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!Gr(e,ue);break;case qr.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!Gr(e,ue);break;case qr.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!Gr(e,ue);break;case qr.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=Zr(e,ue);break;case qr.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=nl(e,ue);break;case qr.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=Gr(e,ue);break;case qr.Name:if(!this.currentTrack)break;this.currentTrack.name=en(e,ue);break;case qr.Language:if(!this.currentTrack)break;if(this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=Zr(e,ue),Ae(this.currentTrack.languageCode)||(this.currentTrack.languageCode=xe);break;case qr.LanguageBCP47:{if(!this.currentTrack)break;const t=Zr(e,ue).split("-")[0];this.currentTrack.languageCode=t||xe,this.currentTrack.hasLanguageBcp47=!0}break;case qr.Video:if("video"!==(null==(s=null==(n=this.currentTrack)?void 0:n.info)?void 0:s.type))break;this.readContiguousElements(e.slice(de,ue));break;case qr.PixelWidth:if("video"!==(null==(o=null==(a=this.currentTrack)?void 0:a.info)?void 0:o.type))break;this.currentTrack.info.width=Gr(e,ue);break;case qr.PixelHeight:if("video"!==(null==(c=null==(l=this.currentTrack)?void 0:l.info)?void 0:c.type))break;this.currentTrack.info.height=Gr(e,ue);break;case qr.DisplayWidth:if("video"!==(null==(d=null==(u=this.currentTrack)?void 0:u.info)?void 0:d.type))break;this.currentTrack.info.displayWidth=Gr(e,ue);break;case qr.DisplayHeight:if("video"!==(null==(f=null==(h=this.currentTrack)?void 0:h.info)?void 0:f.type))break;this.currentTrack.info.displayHeight=Gr(e,ue);break;case qr.DisplayUnit:if("video"!==(null==(p=null==(m=this.currentTrack)?void 0:m.info)?void 0:p.type))break;this.currentTrack.info.displayUnit=Gr(e,ue);break;case qr.AlphaMode:if("video"!==(null==(k=null==(g=this.currentTrack)?void 0:g.info)?void 0:k.type))break;this.currentTrack.info.alphaMode=1===Gr(e,ue);break;case qr.Colour:if("video"!==(null==(b=null==(y=this.currentTrack)?void 0:y.info)?void 0:b.type))break;this.readContiguousElements(e.slice(de,ue));break;case qr.MatrixCoefficients:{if("video"!==(null==(v=null==(T=this.currentTrack)?void 0:T.info)?void 0:v.type))break;const t=Gr(e,ue),i=ae[t];this.currentTrack.info.colorSpace.matrix=i}break;case qr.Range:{if("video"!==(null==(w=null==(S=this.currentTrack)?void 0:S.info)?void 0:w.type))break;const t=Gr(e,ue);this.currentTrack.info.colorSpace.fullRange=1===t||2===t?2===t:void 0}break;case qr.TransferCharacteristics:{if("video"!==(null==(I=null==(P=this.currentTrack)?void 0:P.info)?void 0:I.type))break;const t=Gr(e,ue),i=ne[t];this.currentTrack.info.colorSpace.transfer=i}break;case qr.Primaries:{if("video"!==(null==(C=null==(x=this.currentTrack)?void 0:x.info)?void 0:C.type))break;const t=Gr(e,ue),i=ie[t];this.currentTrack.info.colorSpace.primaries=i}break;case qr.Projection:if("video"!==(null==(E=null==(B=this.currentTrack)?void 0:B.info)?void 0:E.type))break;this.readContiguousElements(e.slice(de,ue));break;case qr.ProjectionPoseRoll:{if("video"!==(null==(A=null==(F=this.currentTrack)?void 0:F.info)?void 0:A.type))break;const t=-tn(e,ue);try{this.currentTrack.info.rotation=K(t)}catch(he){}}break;case qr.Audio:if("audio"!==(null==(M=null==(D=this.currentTrack)?void 0:D.info)?void 0:M.type))break;this.readContiguousElements(e.slice(de,ue));break;case qr.SamplingFrequency:if("audio"!==(null==(O=null==(N=this.currentTrack)?void 0:N.info)?void 0:O.type))break;this.currentTrack.info.sampleRate=tn(e,ue);break;case qr.Channels:if("audio"!==(null==(L=null==(z=this.currentTrack)?void 0:z.info)?void 0:L.type))break;this.currentTrack.info.numberOfChannels=Gr(e,ue);break;case qr.BitDepth:if("audio"!==(null==(q=null==(U=this.currentTrack)?void 0:U.info)?void 0:q.type))break;this.currentTrack.info.bitDepth=Gr(e,ue);break;case qr.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(de,ue)),this.currentCueTime=null;break;case qr.CueTime:this.currentCueTime=Gr(e,ue);break;case qr.CueTrackPositions:{if(null===this.currentCueTime)break;j(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(de,ue)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case qr.CueTrack:{const t=null==(W=this.currentSegment)?void 0:W.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=Gr(e,ue)}break;case qr.CueClusterPosition:{const t=null==(H=this.currentSegment)?void 0:H.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;j(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+Gr(e,ue)}break;case qr.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=Gr(e,ue);break;case qr.SimpleBlock:{if(!this.currentCluster)break;const t=$r(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=cl(e),n=sl(e),s=n>>1&3;let a=!!(128&n);"audio"===(null==(V=i.track.info)?void 0:V.type)&&i.track.info.codec&&(a=!0);const o=nl(e,ue-(e.filePos-de)),l=i.track.decodingInstructions.length>0;i.blocks.push({timestamp:r,duration:0,isKeyFrame:a,data:o,lacing:s,decoded:!l,postProcessed:!1,mainAdditional:null})}break;case qr.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(de,ue)),this.currentBlock=null;break;case qr.Block:{if(!this.currentCluster)break;const t=$r(e);if(null===t)break;const i=this.getTrackDataInCluster(this.currentCluster,t);if(!i)break;const r=cl(e),n=sl(e)>>1&3,s=nl(e,ue-(e.filePos-de)),a=i.track.decodingInstructions.length>0;this.currentBlock={timestamp:r,duration:0,isKeyFrame:!0,data:s,lacing:n,decoded:!a,postProcessed:!1,mainAdditional:null},i.blocks.push(this.currentBlock)}break;case qr.BlockAdditions:this.readContiguousElements(e.slice(de,ue));break;case qr.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(de,ue)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case qr.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=nl(e,ue);break;case qr.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=Gr(e,ue);break;case qr.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=Gr(e,ue);break;case qr.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case qr.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(de,ue));break;case qr.Targets:this.readContiguousElements(e.slice(de,ue));break;case qr.TargetTypeValue:50!==Gr(e,ue)&&(this.currentTagTargetIsMovie=!1);break;case qr.TagTrackUID:case qr.TagEditionUID:case qr.TagChapterUID:case qr.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case qr.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(de,ue));break;case qr.TagName:this.currentSimpleTagName=en(e,ue);break;case qr.TagString:{if(!this.currentSimpleTagName)break;const t=en(e,ue);this.processTagValue(this.currentSimpleTagName,t)}break;case qr.TagBinary:{if(!this.currentSimpleTagName)break;const t=nl(e,ue);this.processTagValue(this.currentSimpleTagName,t)}break;case qr.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(de,ue));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(null!=t.raw||(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new ut(this.currentAttachedFile.fileData,null!=(X=this.currentAttachedFile.fileMediaType)?X:void 0,null!=($=this.currentAttachedFile.fileName)?$:void 0,null!=(G=this.currentAttachedFile.fileDescription)?G:void 0)),(null==(Q=this.currentAttachedFile.fileMediaType)?void 0:Q.startsWith("image/"))&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let i="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?i="coverFront":t.startsWith("back.")&&(i="coverBack")}null!=t.images||(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:i,name:null!=(Y=this.currentAttachedFile.fileName)?Y:void 0,description:null!=(J=this.currentAttachedFile.fileDescription)?J:void 0})}this.currentAttachedFile=null}break;case qr.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let i=BigInt("0");for(let r=0;rt.order-e.order);break;case qr.ContentEncoding:this.currentDecodingInstruction={order:0,scope:Sn.Block,data:null},this.readContiguousElements(e.slice(de,ue)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case qr.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=Gr(e,ue);break;case qr.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=Gr(e,ue);break;case qr.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:Pn.Zlib,settings:null},this.readContiguousElements(e.slice(de,ue));break;case qr.ContentCompAlgo:if("decompress"!==(null==(te=null==(ee=this.currentDecodingInstruction)?void 0:ee.data)?void 0:te.type))break;this.currentDecodingInstruction.data.algorithm=Gr(e,ue);break;case qr.ContentCompSettings:if("decompress"!==(null==(se=null==(re=this.currentDecodingInstruction)?void 0:re.data)?void 0:se.type))break;this.currentDecodingInstruction.data.settings=nl(e,ue);break;case qr.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=de+ue,!0}decodeBlockData(e,t){j(e.decodingInstructions.length>0);let i=t;for(const r of e.decodingInstructions)if(j(r.data),"decompress"===r.data.type)if(r.data.algorithm===Pn.HeaderStripping)if(r.data.settings&&r.data.settings.length>0){const e=r.data.settings,t=new Uint8Array(e.length+i.length);t.set(e,0),t.set(i,e.length),i=t}return i}processTagValue(e,t){var i,r;if(!(null==(i=this.currentSegment)?void 0:i.metadataTags))return;const n=this.currentSegment.metadataTags;if(null!=n.raw||(n.raw={}),null!=(r=n.raw)[e]||(r[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":null!=n.title||(n.title=t);break;case"description":null!=n.description||(n.description=t);break;case"artist":null!=n.artist||(n.artist=t);break;case"album":null!=n.album||(n.album=t);break;case"album_artist":null!=n.albumArtist||(n.albumArtist=t);break;case"genre":null!=n.genre||(n.genre=t);break;case"comment":null!=n.comment||(n.comment=t);break;case"lyrics":null!=n.lyrics||(n.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||null!=n.date||(n.date=e)}break;case"track_number":case"part_number":{const e=t.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=n.trackNumber||(n.trackNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=n.tracksTotal||(n.tracksTotal=r))}break;case"disc_number":case"disc":{const e=t.split("/"),i=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(i)&&i>0&&(null!=n.discNumber||(n.discNumber=i)),r&&Number.isInteger(r)&&r>0&&(null!=n.discsTotal||(n.discsTotal=r))}}}getDurationFromMetadata(e){return z(this,null,function*(){if(e.duration<=0)return null;let t=null;for(const r of e.tracks){j(r.trackBacking);const e=yield r.trackBacking.getFirstPacket({metadataOnly:!0});e&&(t=Math.min(null!=t?t:1/0,e.timestamp))}let i=e.duration/e.timestampFactor;return i+=null!=t?t:0,i})}}class En{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){const e=this.internalTrack.demuxer,t=this.internalTrack.trackBacking.getType();let i=0;for(const r of e.segments)for(const e of r.tracks)if(e.trackBacking.getType()===t&&i++,e===this.internalTrack)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return this.internalTrack.demuxer.getDurationFromMetadata(this.internalTrack.segment)})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getFirstPacket(e){return z(this,null,function*(){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)})}intoTimescale(e){return Ce(e*this.internalTrack.segment.timestampFactor)}getPacket(e,t){return z(this,null,function*(){const i=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=pe(t.presentationTimestamps,i,e=>e.timestamp);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const r=Te(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=i);return{blockIndex:-1!==r?t.presentationTimestamps[r].blockIndex:-1,correctBlockFound:-1!==r&&i{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>i.blockIndex);if(-1!==t)return{blockIndex:t,correctBlockFound:!0}}else{const t=e.trackData.get(this.internalTrack.id);if(t&&null!==t.firstKeyFrameTimestamp){const e=t.blocks.findIndex(e=>e.isKeyFrame);return j(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)})}fetchPacketInCluster(e,t,i){return z(this,null,function*(){var r,n;if(-1===t)return null;const s=e.trackData.get(this.internalTrack.id).blocks[t];if(j(s),s.decoded||(s.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,s.data),s.decoded=!0),!s.postProcessed){if("prores"===(null==(r=this.internalTrack.info)?void 0:r.codec)){if(!(s.data.length>=8&&105===s.data[4]&&99===s.data[5]&&112===s.data[6]&&102===s.data[7])){const e=new Uint8Array(s.data.length+8);J(e).setUint32(0,e.length,!1),e[4]=105,e[5]=99,e[6]=112,e[7]=102,e.set(s.data,8),s.data=e}}s.postProcessed=!0}const a=i.metadataOnly?rr:s.data,o=s.timestamp/this.internalTrack.segment.timestampFactor,l=s.duration/this.internalTrack.segment.timestampFactor,c={};s.mainAdditional&&"video"===(null==(n=this.internalTrack.info)?void 0:n.type)&&this.internalTrack.info.alphaMode&&(c.alpha=i.metadataOnly?rr:s.mainAdditional,c.alphaByteLength=s.mainAdditional.byteLength);const u=new nr(a,s.isKeyFrame?"key":"delta",o,l,e.dataStartPos+t,s.data.byteLength,c);return this.packetToClusterLocation.set(u,{cluster:e,blockIndex:t}),u})}performClusterLookup(e,t,i,r,n){return z(this,null,function*(){var s,a,o,l;const{demuxer:c,segment:u}=this.internalTrack;let d=null,h=null,f=-1;if(e){const{blockIndex:i,correctBlockFound:r}=t(e);if(r)return this.fetchPacketInCluster(e,i,n);-1!==i&&(h=e,f=i)}const m=pe(this.internalTrack.cuePoints,i,e=>e.time),p=-1!==m?this.internalTrack.cuePoints[m]:null,g=pe(this.internalTrack.clusterPositionCache,i,e=>e.startTimestamp),k=-1!==g?this.internalTrack.clusterPositionCache[g]:null,y=Math.max(null!=(s=null==p?void 0:p.clusterPosition)?s:0,null!=(a=null==k?void 0:k.elementStartPos)?a:0)||null;let b;for(e?null===y||e.elementStartPos>=y?(b=e.elementEndPos,d=e):b=y:b=null!=y?y:u.clusterSeekStartPos;null===u.elementEndPos||b<=u.elementEndPos-2;){if(d){const e=d.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>r)break}let e=c.reader.requestSliceRange(b,2,Kr);if(Xe(e)&&(e=yield e),!e)break;const i=b,s=Jr(e);if(!s||!Vr.includes(s.id)&&s.id!==qr.Void){const e=yield nn(c.reader,i,Vr,Math.min(null!=(o=u.elementEndPos)?o:1/0,i+Cn));if(e){b=e;continue}break}const a=s.id;let l=s.size;const m=e.filePos;if(a===qr.Cluster){d=yield c.readCluster(i,u),l=d.elementEndPos-m;const{blockIndex:e,correctBlockFound:r}=t(d);if(r)return this.fetchPacketInCluster(d,e,n);-1!==e&&(h=d,f=e)}if(void 0===l){j(a!==qr.Cluster);l=(yield rn(c.reader,m,jr,u.elementEndPos)).pos-m}const p=m+l;if(null===u.elementEndPos){let e=c.reader.requestSliceRange(p,2,Kr);if(Xe(e)&&(e=yield e),!e)break;if(Qr(e)===qr.Segment){u.elementEndPos=p;break}}b=p}if(p&&(!h||h.elementStartPosz(this,null,function*(){var e,t,i,r,n;let s=null;("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"prores"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(s=yield this.getFirstPacket({}));const a={width:this.internalTrack.info.width,height:this.internalTrack.info.height,codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,colorSpace:this.internalTrack.info.colorSpace,avcType:1,avcCodecInfo:"avc"===this.internalTrack.info.codec&&s?Ft(s.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&s?Wt(s.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&s?ei(s.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&s?ii(s.data):null,proresCodecInfo:"prores"===this.internalTrack.info.codec&&s?ri(s.data):null,proresFormat:this.internalTrack.info.proresFormat};if(!oe(this.internalTrack.info.colorSpace)){const n=Ui(a);null!=(e=this.internalTrack.info.colorSpace).primaries||(e.primaries=n.primaries),null!=(t=this.internalTrack.info.colorSpace).transfer||(t.transfer=n.transfer),null!=(i=this.internalTrack.info.colorSpace).matrix||(i.matrix=n.matrix),null!=(r=this.internalTrack.info.colorSpace).fullRange||(r.fullRange=n.fullRange)}const o={codec:Li(a),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(n=this.internalTrack.info.codecDescription)?n:void 0,colorSpace:this.internalTrack.info.colorSpace};return this.internalTrack.info.width===this.internalTrack.info.squarePixelWidth&&this.internalTrack.info.height===this.internalTrack.info.squarePixelHeight||(o.displayAspectWidth=this.internalTrack.info.squarePixelWidth,o.displayAspectHeight=this.internalTrack.info.squarePixelHeight),o}))():null})}}class Rn extends En{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return z(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>z(this,null,function*(){var e;if("dts"===this.internalTrack.info.codec&&!this.internalTrack.info.dtsFormat){const e=yield this.getFirstPacket({});this.internalTrack.info.dtsFormat=e&&xi(e.data)}return{codec:qi({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo,dtsFormat:this.internalTrack.info.dtsFormat}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}}))():null})}}const Fn=(e,t,i,r=null)=>z(null,null,function*(){const n=B(2,16);let s=t;for(;null===i||s=4;){const t=a.filePos,i=dl(a),n=null!==e.fileSize?e.fileSize-s:null,o=Yi(i,n);if(o.header&&(!r||o.header.sampleRate===r.sampleRate&&o.header.mpegVersionId===r.mpegVersionId&&o.header.layer===r.layer&&tr(o.header.channel)===tr(r.channel)))return{header:o.header,startPos:s};a.filePos=t+o.bytesAdvanced,s=a.filePos}}return null});class An extends ir{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.firstFrameHeaderPos=null,this.xingFrameHeader=null,this.xingFrameHeaderPos=null,this.loadedSamples=[],this.metadataTags=null,this.xingData=null,this.trackBackings=[],this.readingMutex=new ue,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return z(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();if(!this.firstFrameHeader&&this.xingFrameHeader&&(this.firstFrameHeader=this.xingFrameHeader,this.firstFrameHeaderPos=this.xingFrameHeaderPos),!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.trackBackings=[new Dn(this)]}))()})}advanceReader(){return z(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,Cl);if(Xe(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Rl(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=yield Fn(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const i=Qi(t.mpegVersionId,t.channel);let r=this.reader.requestSlice(e.startPos+i,4);if(Xe(r)&&(r=yield r),r){const n=dl(r);if(n===$i||n===Gi){if(this.xingFrameHeader||(this.xingFrameHeader=t,this.xingFrameHeaderPos=e.startPos),!this.xingData){let t=this.reader.requestSlice(e.startPos+i+4,12);if(Xe(t)&&(t=yield t),t){const e=nl(t,12),i=J(e),r=i.getUint32(0,!1);this.xingData={frameCount:r&Zi.FrameCount?i.getUint32(4,!1):null,fileSize:r&Zi.FileSize?i.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=t,this.firstFrameHeaderPos=e.startPos);const n=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,s={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:n,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(s),this.nextTimestampInSamples+=t.audioSamplesInFrame})}getMimeType(){return z(this,null,function*(){return"audio/mpeg"})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return z(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let i=this.reader.requestSlice(e,Cl);if(Xe(i)&&(i=yield i),!i)break;const r=Rl(i);if(!r)break;t=!0;let n=this.reader.requestSlice(i.filePos,r.size);if(Xe(n)&&(n=yield n),!n)break;Fl(n,r,this.metadataTags),e=i.filePos+r.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=xl){let e=this.reader.requestSlice(this.reader.fileSize-xl,xl);Xe(e)&&(e=yield e),j(e);"TAG"===Tl(e,3)&&El(e,this.metadataTags)}return this.metadataTags}finally{e()}})}}class Dn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return j(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){const e=this.demuxer;if(j(null!==e.firstFrameHeader),j(null!==e.firstFrameHeaderPos),e.xingData){if(null!==e.xingData.frameCount)return e.xingData.frameCount*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}else if(null!==e.reader.fileSize){const s=(t=e.firstFrameHeader.lowSamplingFrequency,i=e.firstFrameHeader.layer,r=e.firstFrameHeader.bitrate,n=e.firstFrameHeader.sampleRate,0===i?0:1===i?144*r/(n<e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}})}getPacket(e,t){return z(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=pe(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1>>0&4294967295}const On=e=>{const t=J(e),i=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let n=0;n>>24^t])>>>0}return t.setUint32(22,i,!0),r},zn=(e,t,i)=>{let r=0,n=null;if(e.length>0)if("vorbis"===t.codec){j(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,a=(e[0]&s)>>1;if(a>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=i;const l=t.vorbisInfo.modeBlockflags[a];if(n=t.vorbisInfo.blocksizes[l],1===l){const i=1+(1|s),r=e[0]&i?1:0;o=t.vorbisInfo.blocksizes[r]}r=null!==o?o+n>>2:0}else if("opus"===t.codec){r=(e=>{const t=e[0]>>3,i=3&e[0];let r;return r=0===i?1:1===i||2===i?2:63&e[1],{durationInSamples:ni[t]*r}})(e).durationInSamples}return{durationInSamples:r,vorbisBlockSize:n}},Ln=27,Un=282,qn=e=>{const t=e.filePos;if(hl(e)!==Mn)return null;e.skip(1);const i=sl(e),r=kl(e),n=hl(e),s=hl(e),a=hl(e),o=sl(e),l=new Uint8Array(o);for(let d=0;de+t,0);return{headerStartPos:t,totalSize:c+u,dataStartPos:t+c,dataSize:u,headerType:i,granulePosition:r,serialNumber:n,sequenceNumber:s,checksum:a,lacingValues:l}},Wn=(e,t)=>{for(;e.filePos>>8&255)===i||(t>>>16&255)===i||(t>>>24&255)===i){if(e.skip(-4),t===Mn)return!0;e.skip(1)}}return!1};class Hn extends ir{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.trackBackings=[],this.metadataTags={},this.reader=e._reader}readMetadata(){return z(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,Ln,Un);if(Xe(t)&&(t=yield t),!t)break;const i=qn(t);if(!i)break;if(!!!(2&i.headerType))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(const t of this.bitstreams){const e=yield this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?yield this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&(yield this.readOpusMetadata(e,t)),null!==t.codecInfo.codec&&this.trackBackings.push(new Vn(t,this)))}}))()})}readVorbisMetadata(e,t){return z(this,null,function*(){let i=yield this.findNextPacketStart(e);if(!i)return;const r=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;if(i=yield this.findNextPacketStart(r),!i)return;const n=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!n)return;if(3!==r.data[0]||5!==n.data[0])return;const s=[],a=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};a(e.data.length),a(r.data.length);const o=new Uint8Array(1+s.length+e.data.length+r.data.length+n.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(r.data,1+s.length+e.data.length),o.set(n.data,1+s.length+e.data.length+r.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=n;const l=J(e.data);t.numberOfChannels=l.getUint8(11),t.sampleRate=l.getUint32(12,!0);const c=l.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&c),1<<(c>>4)],modeBlockflags:si(n.data).modeBlockflags},ci(r.data.subarray(7),this.metadataTags)})}readOpusMetadata(e,t){return z(this,null,function*(){const i=yield this.findNextPacketStart(e);if(!i)return;const r=yield this.readPacket(i.startPage,i.startSegmentIndex);if(!r)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=r;const n=(e=>{const t=J(e),i=t.getUint8(9),r=t.getUint16(10,!0),n=t.getUint32(12,!0),s=t.getInt16(16,!0),a=t.getUint8(18);let o=null;return a&&(o=e.subarray(19,21+i)),{outputChannelCount:i,preSkip:r,inputSampleRate:n,outputGain:s,channelMappingFamily:a,channelMappingTable:o}})(e.data);t.numberOfChannels=n.outputChannelCount,t.sampleRate=Wi,t.codecInfo.opusInfo={preSkip:n.preSkip},ci(r.data.subarray(8),this.metadataTags)})}readPacket(e,t){return z(this,null,function*(){j(te+t.length,0);if(0===o)return null;const l=new Uint8Array(o);let c=0;for(let e=0;e{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(yield Promise.all(this.trackBackings.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null})))).filter(Boolean)})})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return z(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}class Vn{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new ue,this.internalSampleRate="opus"===e.codecInfo.codec?Wi:e.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){const e=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return j(-1!==e),e+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return null})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}getDecoderConfig(){return z(this,null,function*(){var e;return j(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:null!=(e=this.bitstream.description)?e:void 0}})}getName(){return null}getLanguageCode(){return xe}getDisposition(){return R(_({},dt),{primary:!1})}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(j(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,i){if(!e)return null;const{durationInSamples:r,vorbisBlockSize:n}=zn(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new nr(i.metadataOnly?rr:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,r/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:r,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:n}),s}getFirstPacket(e){return z(this,null,function*(){j(this.bitstream.lastMetadataPacket);const t=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let i=0;"opus"===this.bitstream.codecInfo.codec&&(j(this.bitstream.codecInfo.opusInfo),i-=this.bitstream.codecInfo.opusInfo.preSkip);const r=yield this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(r,{timestampInSamples:i,vorbisLastBlocksize:null},e)})}getNextPacket(e,t){return z(this,null,function*(){const i=this.encodedPacketToMetadata.get(e);if(!i)throw new Error("Packet was not created from this track.");const r=yield this.demuxer.findNextPacketStart(i.packet);if(!r)return null;const n=i.timestampInSamples+i.durationInSamples,s=yield this.demuxer.readPacket(r.startPage,r.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:n,vorbisLastBlocksize:i.vorbisBlockSize},t)})}getPacket(e,t){return z(this,null,function*(){var i,r;if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const n=Ce(e*this.internalSampleRate);if(0===n)return this.getFirstPacket(t);if(n<0)return null;j(this.bitstream.lastMetadataPacket);const s=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!s)return null;let a=s.startPage,o=this.demuxer.reader.fileSize;const l=[a];e:for(;a.headerStartPos+a.totalSizen?o=c.headerStartPos:(a=c,l.push(c));continue e}i=c.headerStartPos+c.totalSize}}let c=s.startPage;for(const e of l){if(e.granulePosition===a.granulePosition)break;(!c||e.headerStartPos>c.headerStartPos)&&(c=e)}let u=c;const d=[u];for(;u.serialNumber!==this.bitstream.serialNumber||u.granulePosition!==a.granulePosition;){const e=u.headerStartPos+u.totalSize;let t=this.demuxer.reader.requestSliceRange(e,Ln,Un);Xe(t)&&(t=yield t),j(t);const i=qn(t);j(i),u=i,u.serialNumber===this.bitstream.serialNumber&&d.push(u)}j(-1!==u.granulePosition);let h,f,m=null,p=u,g=0;if(u.headerStartPos===s.startPage.headerStartPos)h=this.granulePositionToTimestampInSamples(0),f=!0,m=0;else{h=0,f=!1;for(let t=u.lacingValues.length-1;t>=0;t--){if(u.lacingValues[t]<255){m=t+1;break}}if(null===m)throw new Error("Invalid page with granule position: no packets end on this page.");g=m-1;const e={data:rr,endPage:p,endSegmentIndex:g};if(yield this.demuxer.findNextPacketStart(e)){const e=Kn(d,u,m);j(e);const t=jn(d,e.page,e.segmentIndex);t&&(u=t.page,m=t.segmentIndex)}else for(;;){const e=Kn(d,u,m);if(!e)break;const t=jn(d,e.page,e.segmentIndex);if(!t)break;if(u=t.page,m=t.segmentIndex,e.page.headerStartPos!==p.headerStartPos){p=e.page,g=e.segmentIndex;break}}}let k=null,y=null;for(;null!==u;){j(null!==m);const e=yield this.demuxer.readPacket(u,m);if(!e)break;if(!(u.headerStartPos===s.startPage.headerStartPos&&mn||Math.max(a.timestampInSamples,0)===n))break}const a=yield this.demuxer.findNextPacketStart(e);if(!a)break;u=a.startPage,m=a.startSegmentIndex}return k})}getPacketSequential(e,t){return z(this,null,function*(){const i=yield this.sequentialScanMutex.acquire();try{const i=Ce(e*this.internalSampleRate);e=i/this.internalSampleRate;const r=pe(this.sequentialScanCache,i,e=>e.timestampInSamples);let n;if(-1!==r){const e=this.sequentialScanCache[r];n=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else n=yield this.getFirstPacket(t);let s=0;for(;n&&n.timestampe)break;if(n=i,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(n);j(e),this.sequentialScanCache.length>0&&j(X(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return n}finally{i()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const jn=(e,t,i)=>{let r=t,n=i;e:for(;;){for(n--;n>=0;n--){if(r.lacingValues[n]<255){n++;break e}}j(-1===n);if(!(1&r.headerType)){n=0;break}const t=be(e,e=>e.headerStartPos{if(i>0)return{page:t,segmentIndex:i-1};const r=be(e,e=>e.headerStartPosz(this,null,function*(){var e,t;let i=this.reader.requestSlice(0,12);Xe(i)&&(i=yield i),j(i);const r=Tl(i,4),n="RIFX"!==r,s="RF64"===r,a=ul(i,n);let o=s?this.reader.fileSize:Math.min(a+8,null!=(e=this.reader.fileSize)?e:1/0);if("WAVE"!==Tl(i,4))throw new Error("Invalid WAVE file - wrong format");let l=0,c=null,u=i.filePos;for(;null===o||u=18&&357!==n){const e=al(r,i),s=t-18;if(Math.min(s,e)>=22&&n===Xn.EXTENSIBLE){r.skip(6);const e=nl(r,16);n=e[0]|e[1]<<8}}if(n!==Xn.MULAW&&n!==Xn.ALAW||(l=8),n!==Xn.PCM&&n!==Xn.IEEE_FLOAT&&n!==Xn.ALAW&&n!==Xn.MULAW)throw new Error(`Unsupported WAVE codec (format tag ${n}). Only integer/float PCM, A-law, and \u03bc-law are supported.`);if(n===Xn.PCM&&![8,16,24,32].includes(l))throw new Error(`Unsupported WAVE PCM bit depth (${l}). Only 8, 16, 24, and 32 bits are supported.`);if(n===Xn.IEEE_FLOAT&&![32,64].includes(l))throw new Error(`Unsupported WAVE float bit depth (${l}). Only 32 and 64 bits are supported.`);this.audioInfo={format:n,numberOfChannels:s,sampleRate:a,sampleSizeInBytes:Math.ceil(l/8),blockSizeInBytes:o}})}parseListChunk(e,t,i){return z(this,null,function*(){var r,n,s,a,o,l,c,u,d,h,f;let m=this.reader.requestSlice(e,t);if(Xe(m)&&(m=yield m),!m)return;const p=Tl(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=Tl(m,4),t=ul(m,i),p=nl(m,t);let k=0;for(let i=0;i0&&(null!=(l=this.metadataTags).trackNumber||(l.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=(c=this.metadataTags).tracksTotal||(c.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||null!=(u=this.metadataTags).date||(u.date=e)}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&(null!=(d=this.metadataTags).date||(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":null!=(h=this.metadataTags).genre||(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":null!=(f=this.metadataTags).comment||(f.comment=y)}g+=8+t+(1&t)}})}parseId3Chunk(e,t){return z(this,null,function*(){let i=this.reader.requestSlice(e,t);if(Xe(i)&&(i=yield i),!i)return;const r=Rl(i);if(r){const n=t-Cl;if(r.size=Math.min(r.size,n),r.size>0){const t=i.slice(e+Cl,r.size);Fl(t,r,this.metadataTags)}}})}getCodec(){if(j(this.audioInfo),this.audioInfo.format===Xn.MULAW)return"ulaw";if(this.audioInfo.format===Xn.ALAW)return"alaw";if(this.audioInfo.format===Xn.PCM){if(1===this.audioInfo.sampleSizeInBytes)return"pcm-u8";if(2===this.audioInfo.sampleSizeInBytes)return"pcm-s16";if(3===this.audioInfo.sampleSizeInBytes)return"pcm-s24";if(4===this.audioInfo.sampleSizeInBytes)return"pcm-s32"}if(this.audioInfo.format===Xn.IEEE_FLOAT){if(4===this.audioInfo.sampleSizeInBytes)return"pcm-f32";if(8===this.audioInfo.sampleSizeInBytes)return"pcm-f64"}j(!1)}getMimeType(){return z(this,null,function*(){return"audio/wav"})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return z(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}const Qn=2048;class Yn{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.format}getDecoderConfig(){return z(this,null,function*(){const e=this.demuxer.getCodec();return e?(j(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null})}getNumberOfChannels(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return j(-1!==this.demuxer.dataSize),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getName(){return null}getLanguageCode(){return xe}getDisposition(){return _({},dt)}getPacketAtIndex(e,t){return z(this,null,function*(){j(e>=0),j(this.demuxer.audioInfo);const i=e*Qn*this.demuxer.audioInfo.blockSizeInBytes;if(i>=this.demuxer.dataSize)return null;const r=Math.min(Qn*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-i);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);if(Xe(e)&&(e=yield e),!e)return null}let n;if(t.metadataOnly)n=rr;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+i,r);Xe(e)&&(e=yield e),j(e),n=nl(e,r)}const s=e*Qn/this.demuxer.audioInfo.sampleRate,a=r/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,this.demuxer.lastKnownPacketIndex),new nr(n,"key",s,a,e,r)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getPacket(e,t){return z(this,null,function*(){j(this.demuxer.audioInfo);const i=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/Qn,(this.demuxer.dataSize-1)/(Qn*this.demuxer.audioInfo.blockSizeInBytes)));if(i<0)return null;const r=yield this.getPacketAtIndex(i,t);if(r)return r;if(0===i)return null;j(null===this.demuxer.reader.fileSize);let n=yield this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;n;){const e=yield this.getNextPacket(n,t);if(!e)break;n=e}return n})}getNextPacket(e,t){j(this.demuxer.audioInfo);const i=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/Qn);return this.getPacketAtIndex(i+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Jn=e=>{const t=e.filePos,i=nl(e,9),r=new ht(i);if(4095!==r.readBits(12))return null;r.skipBits(1);if(0!==r.readBits(2))return null;const n=r.readBits(1),s=r.readBits(2)+1,a=r.readBits(4);if(15===a)return null;r.skipBits(1);const o=r.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);const l=r.readBits(13);r.skipBits(11);const c=r.readBits(2)+1;if(1!==c)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===n?e.filePos-=2:u=r.readBits(16),{objectType:s,samplingFrequencyIndex:a,channelConfiguration:o,frameLength:l,numberOfAacFrames:c,crcCheck:u,startPos:t}},Zn=1024;class es extends ir{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.trackBackings=[],this.readingMutex=new ue,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return z(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();j(this.firstFrameHeader),this.trackBackings=[new ts(this)]}))()})}advanceReader(){return z(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,Cl);if(Xe(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Rl(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(Xe(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Jn(e);if(!t)return void(this.lastSampleLoaded=!0);if(null!==this.reader.fileSize&&t.startPos+t.frameLength>this.reader.fileSize)return void(this.lastSampleLoaded=!0);this.firstFrameHeader||(this.firstFrameHeader=t);const i=ft[t.samplingFrequencyIndex];j(void 0!==i);const r=Zn/i,n={timestamp:this.nextTimestampInSamples/i,duration:r,dataStart:t.startPos,dataSize:t.frameLength};this.loadedSamples.push(n),this.nextTimestampInSamples+=Zn,this.lastLoadedPos=t.startPos+t.frameLength})}getMimeType(){return z(this,null,function*(){return"audio/aac"})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackings})}getMetadataTags(){return z(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0;for(;;){let t=this.reader.requestSlice(e,Cl);if(Xe(t)&&(t=yield t),!t)break;const i=Rl(t);if(!i)break;let r=this.reader.requestSlice(t.filePos,i.size);if(Xe(r)&&(r=yield r),!r)break;Fl(r,i,this.metadataTags),e=t.filePos+i.size}return this.metadataTags}finally{e()}})}}class ts{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/Zn}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return null})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getName(){return null}getLanguageCode(){return xe}getCodec(){return"aac"}getInternalCodecId(){return j(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){j(this.demuxer.firstFrameHeader);const e=mt[this.demuxer.firstFrameHeader.channelConfiguration];return j(void 0!==e),e}getSampleRate(){j(this.demuxer.firstFrameHeader);const e=ft[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return j(void 0!==e),e}getDisposition(){return _({},dt)}getDecoderConfig(){return z(this,null,function*(){return j(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}})}getPacketAtIndex(e,t){return z(this,null,function*(){if(-1===e)return null;const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=rr;else{let e=this.demuxer.reader.requestSlice(i.dataStart,i.dataSize);if(Xe(e)&&(e=yield e),!e)return null;r=nl(e,i.dataSize)}return new nr(r,"key",i.timestamp,i.duration,e,i.dataSize)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getNextPacket(e,t){return z(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{const i=me(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===i)throw new Error("Packet was not created from this track.");const r=i+1;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{i()}})}getPacket(e,t){return z(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=pe(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===i&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,t);if(i>=0&&i+1z(this,null,function*(){var e;let t=0;for(;;){let e=this.reader.requestSlice(t,Cl);if(Xe(e)&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const i=Rl(e);if(!i)break;let r=this.reader.requestSlice(e.filePos,i.size);Xe(r)&&(r=yield r),j(r),Fl(r,i,this.metadataTags),t=e.filePos+i.size}for(t+=4;null===this.reader.fileSize||ts.end-6)return{num:a.num,blockSize:a.blockSize,sampleRate:a.sampleRate,size:s.end-e,isLastFrame:!0};if(255===sl(s)){const t=s.filePos;if(sl(s)!==(1===this.blockingBit?249:248)){s.filePos=t;continue}s.skip(-2);const i=s.filePos-e,r=this.readFlacFrameHeader({slice:s,isFirstPacket:!1});if(!r){s.filePos=t;continue}if(0===this.blockingBit){if(r.num-a.num!==1){s.filePos=t;continue}}else if(r.num-a.num!==a.blockSize){s.filePos=t;continue}return{num:a.num,blockSize:a.blockSize,sampleRate:a.sampleRate,size:i,isLastFrame:!1}}}})}readFlacFrameHeader({slice:e,isFirstPacket:t}){const i=e.filePos,r=nl(e,4),n=new ht(r);if(32764!==n.readBits(15))return null;if(null===this.blockingBit){j(t);const e=n.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){j(!t);if(1!==n.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");j(!t);if(0!==n.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*B(2,e):6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?B(2,e):null)(n.readBits(4));if(!s)return null;j(this.audioInfo);const a=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(n.readBits(4),this.audioInfo.sampleRate);if(!a)return null;n.readBits(4),n.readBits(3);if(0!==n.readBits(1))return null;const o=(e=>{let t=0;const i=new ht(nl(e,1));for(;1===i.readBits(1);)t++;if(0===t)return i.readBits(7);const r=[],n=t-1,s=new ht(nl(e,n)),a=8-t-1;for(let o=0;oe|t<"uncommon-u16"===t?ol(e)+1:"uncommon-u8"===t?sl(e)+1:"number"===typeof t?t:(ve(t),void j(!1)))(e,s),c=((e,t)=>"uncommon-u16"===t?ol(e):"uncommon-u16-10"===t?10*ol(e):"uncommon-u8"===t?sl(e):"number"===typeof t?t:null)(e,a);if(null===c)return null;if(c!==this.audioInfo.sampleRate)return null;const u=e.filePos-i,d=sl(e);e.skip(-u),e.skip(-1);const h=(e=>{let t=0;for(const i of e){t^=i;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(nl(e,u));return d!==h?null:{num:o,blockSize:l,sampleRate:c}}advanceReader(){return z(this,null,function*(){yield this.readMetadata(),j(null!==this.lastLoadedPos),j(this.audioInfo);const e=this.lastLoadedPos,t=yield this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const i=this.loadedSamples[this.loadedSamples.length-1],r={blockOffset:i?i.blockOffset+i.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(r),t.isLastFrame&&(this.lastSampleLoaded=!0)})}}class rs{constructor(e){this.demuxer=e}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return xe}getTimeResolution(){return j(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return j(this.demuxer.audioInfo),0===this.demuxer.audioInfo.totalSamples?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}getDisposition(){return _({},dt)}getDecoderConfig(){return z(this,null,function*(){return j(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}})}getPacket(e,t){return z(this,null,function*(){if(j(this.demuxer.audioInfo),e<0)return null;const i=yield this.demuxer.readingMutex.acquire();try{for(;;){const i=pe(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===i){yield this.demuxer.advanceReader();continue}const r=this.demuxer.loadedSamples[i],n=r.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(n+r.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(i,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);yield this.demuxer.advanceReader()}}finally{i()}})}getNextPacket(e,t){return z(this,null,function*(){const i=yield this.demuxer.readingMutex.acquire();try{const i=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{i()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}getPacketAtIndex(e,t){return z(this,null,function*(){const i=this.demuxer.loadedSamples[e];if(!i)return null;let r;if(t.metadataOnly)r=rr;else{let e=this.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);if(Xe(e)&&(e=yield e),!e)return null;r=nl(e,i.byteSize)}j(this.demuxer.audioInfo);const n=i.blockOffset/this.demuxer.audioInfo.sampleRate,s=i.blockSize/this.demuxer.audioInfo.sampleRate;return new nr(r,"key",n,s,e,i.byteSize)})}getFirstPacket(e){return z(this,null,function*(){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)})}}const ns=9e4,ss=B(2,33),as=188,os="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",ls=new Set([133,134,162]),cs=new Set;class us extends ir{constructor(e){super(e),this.metadataPromise=null,this.elementaryStreams=[],this.trackBackingEntries=[],this.packetOffset=0,this.packetStride=-1,this.sectionEndPositions=[],this.seekChunkSize=5242880,this.minReferencePointByteDistance=-1,this.timestampWrapInfo=null,this.reader=e._reader}readMetadata(){return z(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){let e=this.reader.requestSlice(0,205);Xe(e)&&(e=yield e),j(e);const t=nl(e,205);if(71===t[0]&&71===t[188])this.packetOffset=0,this.packetStride=as;else if(71===t[0]&&71===t[204])this.packetOffset=0,this.packetStride=204;else{if(71!==t[4]||71!==t[196])throw new Error("Unreachable.");this.packetOffset=4,this.packetStride=192}this.minReferencePointByteDistance=256*this.packetStride;let i=this.packetOffset,r=null,n=!1,s=!1;for(;;){const e=yield this.readPacketHeader(i);if(!e)break;if(0===e.payloadUnitStartIndicator){i+=this.packetStride;continue}if(s&&!this.elementaryStreams.some(t=>t.pid===e.pid)){i+=this.packetStride;continue}const t=yield this.readSection(i,!0,!s);if(!t)break;const a=3,o=32;let l=!1;if(!s&&0!==t.pid){if(!(0===t.payload[0]&&0===t.payload[1]&&1===t.payload[2])){const e=new ht(t.payload),i=e.readAlignedByte();e.skipBits(8*i);l=2===e.readBits(8)}}if(0!==t.pid||n)if(t.pid!==r&&!l||s){const e=this.elementaryStreams.find(e=>e.pid===t.pid);e:if(e&&!e.initialized){const i=hs(this,t,!0);if(!i)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${e.pid}`);if(e.firstSection=t,e.canBeTrustedWithKeyPackets=1===t.randomAccessIndicator,this.input._initInput){const i=(yield this.input._initInput._getDemuxer()).elementaryStreams.find(i=>i.pid===t.pid&&i.info.codec===e.info.codec);if(i){e.info=i.info,e.initialized=!0;break e}}const r=new ks(e,i);if("video"===e.info.type){for(;;){if(r.suppliedPacket=null,yield r.markNextPacket(),"avc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(e.info.avcCodecInfo=Ft(r.suppliedPacket.data),!e.info.avcCodecInfo)continue;const t=e.info.avcCodecInfo.sequenceParameterSets[0];j(t);const i=Nt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight;const n=i.pixelAspectRatio.num,s=i.pixelAspectRatio.den;n>0&&s>0&&(n>s?(e.info.squarePixelWidth=Math.round(e.info.width*n/s),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*s/n))),e.info.colorSpace={primaries:ie[i.colourPrimaries],transfer:ne[i.transferCharacteristics],matrix:ae[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}if("hevc"===e.info.codec){if(!r.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(e.info.hevcCodecInfo=Wt(r.suppliedPacket.data),!e.info.hevcCodecInfo)continue;const t=e.info.hevcCodecInfo.arrays.find(e=>e.nalUnitType===St.SPS_NUT).nalUnits[0];j(t);const i=qt(t);e.info.width=i.displayWidth,e.info.height=i.displayHeight,i.pixelAspectRatio.num>i.pixelAspectRatio.den?(e.info.squarePixelWidth=Math.round(e.info.width*i.pixelAspectRatio.num/i.pixelAspectRatio.den),e.info.squarePixelHeight=e.info.height):(e.info.squarePixelWidth=e.info.width,e.info.squarePixelHeight=Math.round(e.info.height*i.pixelAspectRatio.den/i.pixelAspectRatio.num)),e.info.colorSpace={primaries:ie[i.colourPrimaries],transfer:ne[i.transferCharacteristics],matrix:ae[i.matrixCoefficients],fullRange:!!i.fullRangeFlag},e.info.reorderSize=i.maxDecFrameBuffering;break}throw new Error("Unhandled.")}e.info.decoderConfig={codec:Li({width:e.info.width,height:e.info.height,codec:e.info.codec,codecDescription:null,colorSpace:e.info.colorSpace,avcType:1,avcCodecInfo:e.info.avcCodecInfo,hevcCodecInfo:e.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null,proresFormat:null}),codedWidth:e.info.width,codedHeight:e.info.height,colorSpace:e.info.colorSpace},e.info.width===e.info.squarePixelWidth&&e.info.height===e.info.squarePixelHeight||(e.info.decoderConfig.displayAspectWidth=e.info.squarePixelWidth,e.info.decoderConfig.displayAspectHeight=e.info.squarePixelHeight),e.initialized=!0}else{if(yield r.markNextPacket(),!r.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${e.pid}`);if("aac"===e.info.codec){const t=il.tempFromBytes(r.suppliedPacket.data),i=Jn(t);if(!i)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");e.info.aacCodecInfo={isMpeg2:!1,objectType:i.objectType},e.info.numberOfChannels=mt[i.channelConfiguration],e.info.sampleRate=ft[i.samplingFrequencyIndex]}else if("mp3"===e.info.codec){const t=dl(il.tempFromBytes(r.suppliedPacket.data)),i=Yi(t,r.suppliedPacket.data.byteLength);if(!i.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");e.info.numberOfChannels=tr(i.header.channel),e.info.sampleRate=i.header.sampleRate}else if("ac3"===e.info.codec){const t=di(r.suppliedPacket.data);if(!t)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(3===t.fscod)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=ui[t.acmod]+t.lfeon,e.info.sampleRate=yt[t.fscod]}else if("eac3"===e.info.codec){const t=mi(r.suppliedPacket.data);if(!t)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");const i=pi(t);if(null===i)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");e.info.numberOfChannels=gi(t),e.info.sampleRate=i}else{if("dts"!==e.info.codec)throw new Error("Unhandled.");{const t=Ii(r.suppliedPacket.data);if(!t)throw new Error("Invalid DTS audio stream; could not read frame header from first packet.");e.info.numberOfChannels=t.numberOfChannels,e.info.sampleRate=t.sampleRate,t.core&&(e.info.dtsFormat=t.hasExtensions?"dtsh":"dtsc")}}e.info.decoderConfig={codec:qi({codec:e.info.codec,codecDescription:null,aacCodecInfo:e.info.aacCodecInfo,dtsFormat:e.info.dtsFormat}),numberOfChannels:e.info.numberOfChannels,sampleRate:e.info.sampleRate},e.initialized=!0}}}else{const e=new ht(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(12);const r=e.readBits(12);e.skipBits(43),e.readBits(13),e.skipBits(6);const n=e.readBits(10),l=e.pos+8*n;let c=!1;for(;e.pos=4){const t=e.readBits(32);c||(c=1212435798===t||1212436562===t)}e.pos=r}for(e.pos=l;8*(r+a)-e.pos>o;){const t=e.readBits(8);e.skipBits(3);const i=e.readBits(13);e.skipBits(6);const r=e.readBits(10),n=e.pos+8*r;let s=!1,a=!1,o=!1;for(;e.pos=4){const t=e.readBits(32);o||(o=1146376960===(4294967040&t))}e.pos=r}let l=null;const u=c&&ls.has(t)?130:t;switch(u){case 27:case 36:l={type:"video",codec:27===t?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:case 130:case 138:{let e;e=3===u||4===u?"mp3":15===u?"aac":129===u?"ac3":135===u?"eac3":"dts",l={type:"audio",codec:e,decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:a?l={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:s?l={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1}:o&&(l={type:"audio",codec:"dts",decoderConfig:null,aacCodecInfo:null,dtsFormat:null,numberOfChannels:-1,sampleRate:-1});break;default:cs.has(t)||(lt._warn(`Note: MPEG-TS streams with stream_type 0x${t.toString(16)} are not currently supported.`),cs.add(t))}l&&this.elementaryStreams.push({demuxer:this,pid:i,streamType:t,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:l,referencePesPackets:[]})}s=!0}else{const e=new ht(t.payload),i=e.readAlignedByte();e.skipBits(8*i),e.skipBits(14);const s=e.readBits(10);for(e.skipBits(40);8*(s+a)-e.pos>o;){const t=e.readBits(16);e.skipBits(3);const i=e.readBits(13);if(0!==t){if(null!==r)throw new Error("Only files with a single program are supported.");r=i}}if(null===r)throw new Error("Program Association Table must link to a Program Map Table.");n=!0}if(s&&this.elementaryStreams.every(e=>e.initialized))break;i+=this.packetStride}if(!s){if(!n)throw new Error("No Program Association Table found in the file.");throw new Error("No Program Map Table found in the file.")}for(const a of this.elementaryStreams)a.initialized&&("video"===a.info.type?this.trackBackingEntries.push(new ms(a)):this.trackBackingEntries.push(new ps(a)))}))()})}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),this.trackBackingEntries})}getMetadataTags(){return z(this,null,function*(){return{}})}getMimeType(){return z(this,null,function*(){yield this.readMetadata();return(e=>{let t="video/MP2T";const i=[...new Set(e.filter(Boolean))];return i.length>0&&(t+=`; codecs="${i.join(", ")}"`),t})(yield Promise.all(this.trackBackingEntries.map(e=>e.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null}))))})}readSection(e,t,i=!1){return z(this,null,function*(){let r=e,n=e;const s=[];let a,o=0,l=null,c=!0,u=0;for(;;){const e=yield this.readPacket(n);if(n+=this.packetStride,!e)break;if(l){if(e.pid!==l.pid){if(i)break;continue}if(1===e.payloadUnitStartIndicator)break}else{if(0===e.payloadUnitStartIndicator)break;l=e}const a=!!(2&e.adaptationFieldControl),d=!!(1&e.adaptationFieldControl);let h=0;if(a&&(h=1+e.body[0],e===l&&h>1&&(u=e.body[1]>>6&1)),d&&(0===h?(s.push(e.body),o+=e.body.byteLength):(s.push(e.body.subarray(h)),o+=e.body.byteLength-h)),r=n,!t&&o>=64){c=!1;break}if(-1!==me(this.sectionEndPositions,r,e=>e)){c=!1;break}}if(c){const e=pe(this.sectionEndPositions,r,e=>e);this.sectionEndPositions.splice(e+1,0,r)}if(!l)return null;if(1===s.length)a=s[0];else{const e=s.reduce((e,t)=>e+t.length,0);a=new Uint8Array(e);let t=0;for(const i of s)a.set(i,t),t+=i.length}return{startPos:e,endPos:t?r:null,pid:l.pid,payload:a,randomAccessIndicator:u}})}readPacketHeader(e){return z(this,null,function*(){let t=this.reader.requestSlice(e,4);if(Xe(t)&&(t=yield t),!t)return null;if(71!==sl(t))throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const i=ol(t);return{payloadUnitStartIndicator:i>>14&1,pid:8191&i,adaptationFieldControl:sl(t)>>4&3}})}readPacket(e){return z(this,null,function*(){let t=this.reader.requestSlice(e,as);if(Xe(t)&&(t=yield t),!t)return null;const i=nl(t,as);if(71!==i[0])throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");const r=(i[1]<<8)+i[2];return{payloadUnitStartIndicator:r>>14&1,pid:8191&r,adaptationFieldControl:i[3]>>4&3,body:i.subarray(4)}})}normalizeTimestamp(e){if(!this.timestampWrapInfo){const t=54e5;this.timestampWrapInfo={reference:e-t,offset:e>=ss-t?-ss:ss}}const{reference:t,offset:i}=this.timestampWrapInfo;return i<0&&e>=t||i>0&&e{if(t.payload.byteLength<3)return null;const r=new ht(t.payload);if(1!==r.readBits(24))return null;const n=r.readBits(8);if(r.skipBits(16),188===n||190===n||191===n||240===n||241===n||255===n||242===n||248===n)return null;r.skipBits(8);const s=r.readBits(2);r.skipBits(14);let a=null;if(2===s||3===s)a=0,r.skipBits(4),a+=r.readBits(3)*(1<<30),r.skipBits(1),a+=32768*r.readBits(15),r.skipBits(1),a+=r.readBits(15),a=e.normalizeTimestamp(a);else if(i)throw new Error(os);return{sectionStartPos:t.startPos,sectionEndPos:t.endPos,pts:a,randomAccessIndicator:t.randomAccessIndicator}},hs=(e,t,i)=>{j(null!==t.endPos);const r=ds(e,t,i);if(!r)return null;const n=new ht(t.payload);n.skipBits(32);const s=n.readBits(16);n.skipBits(16);const a=n.readBits(8),o=n.pos+8*a;n.pos=o;const l=o/8;j(Number.isInteger(l));const c=t.payload.subarray(l,s>0?6+s:t.payload.byteLength);return R(_({},r),{data:c})};class fs{constructor(e){this.elementaryStream=e,this.packetBuffers=new WeakMap,this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){const e=this.elementaryStream.demuxer,t=this.elementaryStream.info.type;let i=0;for(const r of e.trackBackingEntries)if(r.getType()===t&&i++,j(r instanceof fs),r.elementaryStream===this.elementaryStream)break;return i}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return xe}getDisposition(){return R(_({},dt),{primary:!1})}getTimeResolution(){return ns}isRelativeToUnixEpoch(){return!1}getUnixTimeForTimestamp(){return null}getPairingMask(){return BigInt("1")}getBitrate(){return null}getAverageBitrate(){return null}getDurationFromMetadata(){return z(this,null,function*(){return null})}getLiveRefreshInterval(){return z(this,null,function*(){return null})}createEncodedPacket(e,t,i){let r;return r=this.allPacketsAreKeyPackets()||1===e.randomAccessIndicator?"key":"delta",new nr(i.metadataOnly?rr:e.data,r,e.pts/ns,Math.max(t/ns,0),e.sequenceNumber,e.data.byteLength)}getFirstPacket(e){return z(this,null,function*(){const t=this.elementaryStream.firstSection;j(t);const i=hs(this.elementaryStream.demuxer,t,!0);j(i);const r=new ks(this.elementaryStream,i),n=new ys(this,r),s=yield n.readNext();if(!s)return null;const a=this.createEncodedPacket(s.packet,s.duration,e);return this.packetBuffers.set(a,n),this.packetSectionStarts.set(a,s.packet.sectionStartPos),a})}getNextPacket(e,t){return z(this,null,function*(){let i=this.packetBuffers.get(e);if(i){const r=yield i.readNext();if(!r)return null;this.packetBuffers.delete(e);const n=this.createEncodedPacket(r.packet,r.duration,t);return this.packetBuffers.set(n,i),this.packetSectionStarts.set(n,r.packet.sectionStartPos),n}const r=this.packetSectionStarts.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");const n=this.elementaryStream.demuxer,s=yield n.readSection(r,!0);j(s);const a=hs(n,s,!0);j(a);const o=new ks(this.elementaryStream,a);i=new ys(this,o);const l=e.sequenceNumber;for(;;){const e=yield i.readNext();if(!e)return null;if(e.packet.sequenceNumber>l){const r=this.createEncodedPacket(e.packet,e.duration,t);return this.packetBuffers.set(r,i),this.packetSectionStarts.set(r,e.packet.sectionStartPos),r}}})}getNextKeyPacket(e,t){return z(this,null,function*(){let i=e;for(;;){if(i=yield this.getNextPacket(i,t),!i)return null;if("key"===i.type)return i}})}getPacket(e,t){return this.doPacketLookup(e,!1,t)}getKeyPacket(e,t){return this.doPacketLookup(e,!0,t)}doPacketLookup(e,t,i){return z(this,null,function*(){var r,n,s,a,o,l;const c=Ce(e*ns),u=this.elementaryStream.demuxer,{reader:d,seekChunkSize:h}=u,f=this.elementaryStream.pid,m=(e,t,i)=>z(this,null,function*(){let r=e;for(;re.pts),T=-1!==b?y[b]:null;if(T&&c-T.pts<45e3)k=T.sectionStartPos;else{let e=0;if(null!==d.fileSize){const t=Math.ceil(d.fileSize/h);if(t>1){let i=0,r=t-1;for(e=i;i<=r;){const t=Math.floor((i+r)/2),n=_e(t*h,u.packetStride)+g.sectionStartPos,s=n+h,a=yield m(n,s,!1);a?a.pesPacketHeader.pts<=c?(e=t,i=t+1):r=t-1:r=t-1}}}k=_e(e*h,u.packetStride)+g.sectionStartPos}const v=yield m(k,null!=(r=d.fileSize)?r:1/0,!1);let S=null!=(n=null==v?void 0:v.pesPacketHeader)?n:null;S||(S=g);const w=this.getReorderSize(),P=(e,t)=>z(this,null,function*(){var r,n;const s=yield u.readSection(e,!0);j(s);const a=hs(u,s,!0);j(a);const o=new ks(this.elementaryStream,a),l=new ys(this,o);for(;;){if((null!=(n=null==(r=X(l.presentationOrderPackets))?void 0:r.pts)?n:-1/0)>=c)break;if(!(yield l.readNextPacket()))break}const d=Te(l.presentationOrderPackets,t);if(-1===d)return null;const h=l.presentationOrderPackets[d],f=0===d?0:h.pts-l.presentationOrderPackets[d-1].pts;for(;l.decodeOrderPackets[0]!==h;)l.decodeOrderPackets.shift();l.lastDuration=f;const m=yield l.readNext();j(m);const p=this.createEncodedPacket(m.packet,m.duration,i);return this.packetBuffers.set(p,l),this.packetSectionStarts.set(p,m.packet.sectionStartPos),p});if(!t||this.allPacketsAreKeyPackets()){e:for(;;){let e=S.sectionStartPos+u.packetStride;for(;;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,!1);if(t){const e=ds(u,t,!1);if(e&&null!==e.pts){if(e.pts>c)break e;S=e,gs(this.elementaryStream,S);break}}}e+=u.packetStride}}e:for(let e=0;e=u.packetOffset;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,!1);if(t){const e=ds(u,t,!1);if(e&&null!==e.pts){S=e;break}}}e-=u.packetStride}}return P(S.sectionStartPos,e=>e.pts<=c)}{let e=k,t=null;const i=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let r=null;const n=e<=g.sectionStartPos;let k,y=null;if(n)k=g,y=p;else{const t=yield m(e,null!=(s=d.fileSize)?s:1/0,i);k=null!=(a=null==t?void 0:t.pesPacketHeader)?a:null,y=null!=(o=null==t?void 0:t.section)?o:null}let b=!1,T=0;e:for(;k&&!(null!==t&&k.sectionStartPos>=t);){if(k.pts<=c){let e;if(this.elementaryStream.canBeTrustedWithKeyPackets)e=1===k.randomAccessIndicator;else{j(y);const t=hs(u,y,!0);j(t);const i=new ks(this.elementaryStream,t);yield i.markNextPacket(),e=1===(null==(l=i.suppliedPacket)?void 0:l.randomAccessIndicator)}e&&(r=k)}if(k.pts>c&&(b=!0),b&&(T++,T>w))break;let e=k.sectionStartPos+u.packetStride;for(;;){const t=yield u.readPacketHeader(e);if(!t)break e;if(t.pid===f&&1===t.payloadUnitStartIndicator){const t=yield u.readSection(e,i);if(t){const e=ds(u,t,!1);if(e&&null!==e.pts){k=e,y=t,gs(this.elementaryStream,k);break}}}e+=u.packetStride}}if(r){let e=r;if(0===T)e:for(let r=0;r=u.packetOffset;){const r=yield u.readPacketHeader(t);if(!r)break e;if(r.pid===f&&1===r.payloadUnitStartIndicator){const r=yield u.readSection(t,i);if(r){const t=ds(u,r,!1);if(t&&null!==t.pts){e=t;break}}}t-=u.packetStride}}const t=yield P(e.sectionStartPos,e=>e.pts<=c&&1===e.randomAccessIndicator);return j(t),t}if(n)return null;t=e,e=Math.max(_e(e-g.sectionStartPos-h,u.packetStride)+g.sectionStartPos,g.sectionStartPos)}}})}}class ms extends fs{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}getColorSpace(){return z(this,null,function*(){return this.elementaryStream.info.colorSpace})}canBeTransparent(){return z(this,null,function*(){return!1})}getDecoderConfig(){return z(this,null,function*(){return j(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig})}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}}class ps extends fs{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}getDecoderConfig(){return z(this,null,function*(){return j(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig})}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}}const gs=(e,t)=>{const i=e.referencePesPackets,r=pe(i,t.sectionStartPos,e=>e.sectionStartPos);if(r>=0){const n=i[r];if(t.pts<=n.pts)return!1;const s=e.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-n.sectionStartPos=e?e:this.bufferData(e-t).then(()=>Math.min(this.endPos-this.currentPos,e))}getCurrentPesPacket(){const e=this.pesPackets[this.currentPesPacketIndex];return j(e),e}bufferData(e){return z(this,null,function*(){const t=this.endPos+e;for(;this.endPos=c)break;u=t;const r=o+u;if(u+3>=c){this.seekTo(r);break}const d=l[u+1],h=l[u+2],f=l[u+3];let m=0;if(0===d&&0===h&&1===f?m=4:0===d&&1===h&&(m=3),0===m){u++;continue}const p=r;null!=n||(n=p);const g=u+m,k=g+i,y=6;if(k+("avc"===e?y:1)>c){this.seekTo(r);break}const b=l[g];let T,v,S;if("avc"===e)T=Ct(b),v=T===Tt.NON_IDR_SLICE||T===Tt.SLICE_DPA||T===Tt.IDR,S=T===Tt.SEI||T===Tt.SPS||T===Tt.PPS||T===Tt.AUD;else{T=Ut(b);if(((1&b)<<5|l[g+1]>>3)>0){u+=m;continue}v=T<=St.RASL_R||T>=St.BLA_W_LP&&T<=21,S=T>=St.VPS_NUT&&T<=37||T===St.PREFIX_SEI_NUT||T>=41&&T<=44||T>=48&&T<=55}let w=!1;if(v){let t;if("avc"===e){const e=l.subarray(k,k+y),i=$(new ht(e));t=!s||i<=a,a=i}else t=l[k]>>7===1;t&&(s?w=!0:s=!0)}else S&&s&&(w=!0);if(w){const e=p-n;return this.seekTo(n),this.supplyPacket(e,0)}u+=m}if(rn){const e=this.endPos-n;return this.seekTo(n),this.supplyPacket(e,0)}}else{const n=r.info.codec,s=128;for(;;){let a=this.ensureBuffered(s);Xe(a)&&(a=yield a);const o=this.currentPos;for(;this.currentPos-o>6,a=63&i[4];if(3===n||a>37){this.seekTo(e+1);continue}const o=hi[3*a+n];j(void 0!==o),this.seekTo(e),t=this.ensureBuffered(o),Xe(t)&&(t=yield t);const l=Math.round(13824e4/r.info.sampleRate);return this.supplyPacket(t,l)}if("eac3"===n){if(11!==s)continue;this.skip(-1);const e=this.currentPos;let t=this.ensureBuffered(5);if(Xe(t)&&(t=yield t),t<5)return;const i=this.readBytes(5);if(11!==i[0]||119!==i[1]){this.seekTo(e+1);continue}const n=2*(((7&i[2])<<8|i[3])+1),a=3===i[4]>>6?3:i[4]>>4&3,o=fi[a];this.seekTo(e),t=this.ensureBuffered(n),Xe(t)&&(t=yield t);const l=256*o,c=Math.round(l*ns/r.info.sampleRate);return this.supplyPacket(t,c)}if("dts"===n){if(127!==s&&100!==s)continue;this.skip(-1);const n=this.currentPos;let a=this.ensureBuffered(18);if(Xe(a)&&(a=yield a),a<18)return;const o=this.readBytes(18),l=Ci(o);let c=l?null:Bi(o);if(!l&&!c){this.seekTo(n+1);continue}if(c&&!c.asset){this.seekTo(n);const t=Math.min(c.frameSize,4096);let i=this.ensureBuffered(t);Xe(i)&&(i=yield i),c=null!=(e=Bi(this.readBytes(i)))?e:c}let u=l?l.frameSize:c.frameSize;if(l){let e=4*Math.ceil(l.frameSize/4);for(;;){this.seekTo(n);const t=e+10;let i=this.ensureBuffered(t);if(Xe(i)&&(i=yield i),i=0)}readNext(){return z(this,null,function*(){if(0===this.decodeOrderPackets.length){if(!(yield this.readNextPacket()))return null}yield this.ensureCurrentPacketHasNext();const e=this.decodeOrderPackets[0],t=this.presentationOrderPackets.indexOf(e);let i;if(j(-1!==t),t===this.presentationOrderPackets.length-1)i=this.lastDuration;else{i=this.presentationOrderPackets[t+1].pts-e.pts,this.lastDuration=i}for(this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){const e=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(e))break;this.presentationOrderPackets.shift()}return{packet:e,duration:i}})}readNextPacket(){return z(this,null,function*(){if(this.reachedEnd)return!1;let e;return this.context.suppliedPacket||(yield this.context.markNextPacket()),e=this.context.suppliedPacket,this.context.suppliedPacket=null,e?(this.decodeOrderPackets.push(e),this.processPacketThroughReorderBuffer(e),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)})}ensureCurrentPacketHasNext(){return z(this,null,function*(){const e=this.decodeOrderPackets[0];for(j(e);;){const t=this.presentationOrderPackets.indexOf(e);if(-1!==t&&t<=this.presentationOrderPackets.length-2)break;if(!(yield this.readNextPacket()))break}})}processPacketThroughReorderBuffer(e){if(this.reorderBuffer.push(e),this.reorderBuffer.length>this.reorderSize){let e=0;for(let i=1;ie.pts-t.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}}const bs="application/vnd.apple.mpegurl",Ts="#EXT-X-STREAM-INF:",vs="#EXT-X-I-FRAME-STREAM-INF:",Ss="#EXT-X-MEDIA:",ws="#EXTINF:",Ps="#EXT-X-MAP:",Is="#EXT-X-KEY:",xs="#EXT-X-MEDIA-SEQUENCE:",Cs="#EXT-X-BYTERANGE:",Bs="#EXT-X-PROGRAM-DATE-TIME:",Es="#EXT-X-TARGETDURATION:",_s="#EXT-X-PLAYLIST-TYPE:",Rs=e=>0===e.length||e.startsWith("#")&&!e.startsWith("#EXT");class Fs{constructor(e){this._attributes={};let t="",i="",r=!1,n=!1;for(let s=0;sz(this,null,function*(){const e=[];if(this.trackDeclarations){for(const t of this.trackDeclarations)if("video"===t.type){const i=et(e,e=>"video"===e.getType())+1;e.push(new Ms(this,t,i))}else if("audio"===t.type){const i=et(e,e=>"audio"===e.getType())+1;e.push(new Ns(this,t,i))}}else{if(this.firstSegment=yield this.getFirstSegment({}),!this.firstSegment)return[];const t=this.getInputForSegment(this.firstSegment),i=yield t.getTracks();for(const r of i)if("video"===r.type){const t=et(e,e=>"video"===e.getType())+1;e.push(new Ms(this,{id:e.length+1,type:"video"},t))}else if("audio"===r.type){const t=et(e,e=>"audio"===e.getType())+1;e.push(new Ns(this,{id:e.length+1,type:"audio"},t))}}return e}))()})}getFirstTimestampForInput(e){return z(this,null,function*(){const t=this.firstTimestampCache.get(e);if(void 0!==t)return t;const i=yield e.getFirstTimestamp();return this.firstTimestampCache.set(e,i),i})}getMediaOffset(e,t){return z(this,null,function*(){var i;const r=null!=(i=e.firstSegment)?i:e;let n;if(this.firstSegmentFirstTimestamps.has(r))n=this.firstSegmentFirstTimestamps.get(r);else{const e=this.getInputForSegment(r);n=yield this.getFirstTimestampForInput(e),this.firstSegmentFirstTimestamps.set(r,n)}if(r===e)return r.timestamp-n;const s=yield this.getFirstTimestampForInput(t),a=e.timestamp-r.timestamp,o=s-n-a;return Math.abs(o)<=Math.min(.25,a)?r.timestamp-n:e.timestamp-s})}dispose(){for(const e of this.inputCache)e.input.dispose();this.inputCache.length=0}}class Ds{constructor(e,t,i){this.packetInfos=new WeakMap,this.hydrationPromise=null,this.firstInputTrack=null,this.firstSegment=null,this.segmentedInput=e,this.decl=t,this.number=i}hydrate(){var e;return null!=(e=this.hydrationPromise)?e:this.hydrationPromise=(()=>z(this,null,function*(){var e,t;if(null!=(e=this.segmentedInput).firstSegment||(e.firstSegment=yield this.segmentedInput.getFirstSegment({})),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let i=this.segmentedInput.firstSegment,r=null;for(;i;){const e=this.segmentedInput.getInputForSegment(i);if(r=null!=(t=(yield e.getTracks()).find(e=>e.type===this.decl.type&&e.number===this.number))?t:null,r)break;i=yield this.segmentedInput.getNextSegment(i,{})}if(!r)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=r,this.firstSegment=i}))()}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(e){return this.firstInputTrack?e():this.hydrate().then(e)}getDecoderConfig(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}getHasOnlyKeyPackets(){return this.delegate(()=>{var e,t,i;return null!=(i=null==(t=(e=this.firstInputTrack._backing).getHasOnlyKeyPackets)?void 0:t.call(e))?i:null})}getPairingMask(){return BigInt("1")}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}isRelativeToUnixEpoch(){return z(this,null,function*(){return yield this.hydrate(),j(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.unixEpochTimestamp===this.segmentedInput.firstSegment.timestamp})}getUnixTimeForTimestamp(e){return this.segmentedInput.getUnixTimeForTimestamp(e)}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(e){return this.segmentedInput.getDurationFromMetadata(e)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}createAdjustedPacket(e,t,i){return z(this,null,function*(){j(e.sequenceNumber>=0),j(this.segmentedInput.firstSegment);const r=yield this.segmentedInput.getMediaOffset(t,i.input),n=t.timestamp-this.segmentedInput.firstSegment.timestamp,s=e.clone({timestamp:Ee(e.timestamp+r,yield i.getTimeResolution()),sequenceNumber:Math.floor(1e8*n)+e.sequenceNumber});return this.packetInfos.set(s,{segment:t,track:i,sourcePacket:e}),s})}getFirstPacket(e){return z(this,null,function*(){var t;yield this.hydrate(),j(this.firstInputTrack),j(this.firstSegment);let i=this.firstInputTrack,r=this.firstSegment;for(;;){if(i){const t=yield i._backing.getFirstPacket(e);if(t)return this.createAdjustedPacket(t,r,i)}if(r=yield this.segmentedInput.getNextSegment(r,{skipLiveWait:e.skipLiveWait}),!r)break;const n=this.segmentedInput.getInputForSegment(r);i=null!=(t=(yield n.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number))?t:null}return null})}getNextPacket(e,t){return this._getNextInternal(e,t,!1)}getNextKeyPacket(e,t){return this._getNextInternal(e,t,!0)}_getNextInternal(e,t,i){return z(this,null,function*(){const r=this.packetInfos.get(e);if(!r)throw new Error("Packet was not created from this track.");const n=i?yield r.track._backing.getNextKeyPacket(r.sourcePacket,t):yield r.track._backing.getNextPacket(r.sourcePacket,t);if(n)return this.createAdjustedPacket(n,r.segment,r.track);let s=r.segment;for(;;){const e=yield this.segmentedInput.getNextSegment(s,{skipLiveWait:t.skipLiveWait});if(!e)return null;const i=this.segmentedInput.getInputForSegment(e),n=(yield i.getTracks()).find(e=>e.type===r.track.type&&e.number===r.track.number);if(!n){s=e;continue}const a=yield n._backing.getFirstPacket(t);return a?this.createAdjustedPacket(a,e,n):null}})}getPacket(e,t){return this._getPacketInternal(e,t,!1)}getKeyPacket(e,t){return this._getPacketInternal(e,t,!0)}_getPacketInternal(e,t,i){return z(this,null,function*(){let r=yield this.segmentedInput.getSegmentAt(e,{skipLiveWait:t.skipLiveWait});if(!r)return null;for(yield this.hydrate();r;){const n=this.segmentedInput.getInputForSegment(r),s=(yield n.getTracks()).find(e=>e.type===this.firstInputTrack.type&&e.number===this.firstInputTrack.number);if(!s){r=yield this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait});continue}const a=yield this.segmentedInput.getMediaOffset(r,n),o=e-a,l=i?yield s._backing.getKeyPacket(o,t):yield s._backing.getPacket(o,t);if(l)return this.createAdjustedPacket(l,r,s);r=yield this.segmentedInput.getPreviousSegment(r,{skipLiveWait:t.skipLiveWait})}return null})}}class Ms extends Ds{getType(){return"video"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getCodedWidth(){return this.delegate(()=>this.firstInputTrack._backing.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.firstInputTrack._backing.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.firstInputTrack._backing.getSquarePixelHeight())}getRotation(){return this.delegate(()=>this.firstInputTrack._backing.getRotation())}getColorSpace(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getColorSpace())})}canBeTransparent(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.canBeTransparent())})}getDecoderConfig(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}}class Ns extends Ds{getType(){return"audio"}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getNumberOfChannels(){return this.delegate(()=>this.firstInputTrack._backing.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.firstInputTrack._backing.getSampleRate())}getDecoderConfig(){return z(this,null,function*(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())})}}Ye();const Os=1/0;"undefined"!==typeof FinalizationRegistry&&new FinalizationRegistry(e=>{e()});class zs extends st{constructor(){super(),this._disposed=!1,this._refCount=0,this._usedForHls=!1,this._refFinalizationRegistry=null,this._sizePromise=null,this.onread=null,"undefined"!==typeof FinalizationRegistry&&(this._refFinalizationRegistry=new FinalizationRegistry(e=>{e._decrementRefCount()}))}getSizeOrNull(){return z(this,null,function*(){var e;if(this._disposed)throw new el;return null!=(e=this._sizePromise)?e:this._sizePromise=(()=>z(this,null,function*(){let e=this._getFileSize();return void 0!==e||(yield this._read(0,1,0,Os),e=this._getFileSize(),j(void 0!==e)),e}))()})}getSize(){return z(this,null,function*(){if(this._disposed)throw new el;const e=yield this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e})}slice(e,t){if(!Number.isInteger(e)||e<0)throw new TypeError("offset must be a non-negative integer.");if(void 0!==t&&(!Number.isInteger(t)||t<0))throw new TypeError("length, when provided, must be a non-negative integer.");return new ea(this,e,t)}_dispatchRead(e,t){var i;null==(i=this.onread)||i.call(this,e,t),this._emit("read",{start:e,end:t})}ref(){return new Ls(this)}_incrementRefCount(){this._refCount++}_decrementRefCount(){this._refCount--,0===this._refCount&&(this._dispose(),this._disposed=!0)}}class Ls{constructor(e){var t;if(this._freed=!1,e._disposed)throw new Error("Cannot ref a disposed source.");e._incrementRefCount(),null==(t=e._refFinalizationRegistry)||t.register(this,e,this),this._source=e}get source(){if(!this._source)throw new Error("Can't get source; ref has already been freed.");return this._source}get freed(){return this._freed}free(){var e;if(this._freed)throw new Error("Illegal operation: double free on SourceRef.");const t=this.source;j(t._refCount>0),t._decrementRefCount(),null==(e=t._refFinalizationRegistry)||e.unregister(this),this._freed=!0,this._source=null}[Symbol.dispose](){this.freed||this.free()}}class Us extends zs{constructor(e,t){if("string"!==typeof e)throw new TypeError("rootPath must be a string.");if("function"!==typeof t)throw new TypeError("requestHandler must be a function.");super(),this.rootPath=e,this.requestHandler=t}_resolveRequest(e){const t=this.requestHandler(e),i=e=>{var t;if(!(e instanceof zs||e instanceof Ls))throw new TypeError("requestHandler must return or resolve to a Source or SourceRef.");const i=e instanceof zs?e.ref():e;return(t=i.source)._usedForHls||(t._usedForHls=this._usedForHls),i};return Xe(t)?t.then(i):i(t)}}const qs=(e,t)=>e.path===t.path;class Ws extends Us{constructor(){super(...arguments),this._root=null,this._rootRequest=null}_read(e,t,i,r){if(!this._root){if(!this._rootRequest){const e=this._resolveRequest({path:this.rootPath,isRoot:!0}),t=e=>{const 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provided, must be a boolean.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, when provided, must be a function.");super(),this._readers=new WeakMap,this._blob=e,this._options=t,this._orchestrator=new Zs({maxCacheSize:null!=(i=t.maxCacheSize)?i:8*B(2,20),maxWorkerCount:4,runWorker:this._runWorker.bind(this),onIdleWorkerRemoved:e=>{const t=this._readers.get(e);t&&(this._readers.delete(e),null==Hs||Hs.unregister(e),t.cancel().catch(()=>{}))},prefetchProfile:Js.fileSystem,handleUnhandledError:t.handleUnhandledError}),this._orchestrator.fileSize=e.size}_getFileSize(){return this._orchestrator.fileSize}_read(e,t,i,r){return this._orchestrator.read(e,t,i,r)}_runWorker(e){return z(this,null,function*(){j(e.strictTarget);let t=this._readers.get(e);if(void 0===t){if("stream"in this._blob&&!Ue()&&!1!==this._options.useStreamReader){t=this._blob.slice(e.currentPos).stream().getReader(),null==Hs||Hs.register(e,t,e)}else t=null;this._readers.set(e,t)}for(;e.currentPos{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))&&"undefined"!==typeof window){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(i instanceof Request?i.url:i,window.location.href).origin)}catch(r){}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return lt._warn("Request will not be retried because a CORS error was suspected due to different origins. 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The used fetch function must provide the response body as a ReadableStream.");if(206!==n.status){if(this._sequentialBacking)return void n.body.cancel();if(!this._usedForHls){const e=new URL(this._url instanceof Request?this._url.url:this._url,"undefined"!==typeof window?window.location.href:void 0);"null"===e.origin||e.pathname.endsWith(".m3u8")||e.pathname.endsWith(".m3u")||Xs.has(e.origin)||(lt._warn(`HTTP server (origin ${e.origin}) did not respond to a range request with 206 Partial Content, meaning the resource will now be streamed sequentially, with old data being evicted from the cache. Reads into evicted regions will throw. To enable efficient media file streaming across a network, please make sure your server supports range requests. Alternatively, set maxCacheSize to Infinity in the UrlSource options to keep the entire resource in memory.`),Xs.add(e.origin))}return void this._transitionToSequentialMode(n.body)}const s=n.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted)return r.abort(),void this._orchestrator.signalWorkerStoppedRunning(e);let t;try{t=yield s.read()}catch(i){if(this._disposed)throw i;const e=this._getRetryDelay(1,i,this._url);if(null!==e){lt._error("Error while reading response stream. 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Attempting to resume.",s),yield nt(1e3*e);const a=yield Oe(null!=(n=this._options.fetchFn)?n:fetch,this._url,Me(this._requestInit,{headers:{Range:`bytes=${i}-`}}),this._getRetryDelay,()=>this._disposed);if(!a.ok)throw new Error(`Error fetching ${String(this._url)}: ${a.status} ${a.statusText}`);if(!a.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");t=a.body.getReader(),r=206===a.status?0:i;continue}if(a.done)return void e.close();let o=a.value;if(r>0){const e=Math.min(r,o.length);r-=e,o=o.subarray(e)}if(0!==o.length)return i+=o.length,void e.enqueue(o)}}),cancel:()=>t.cancel()}),s=new Ys(n,{maxCacheSize:this._orchestrator.options.maxCacheSize,handleUnhandledError:this._options.handleUnhandledError});s._endIndex=this._orchestrator.fileSize,s._cacheMissErrorMessage="Attempted to read data from an already-evicted part of the cache. Because the HTTP server did not honor the range request, data can only be read sequentially, with old data being evicted from the cache. To fix this issue, either ensure your server responds to range requests with 206 Partial Content, or set maxCacheSize to Infinity in the UrlSource options. Note that the latter will store the entire file in the cache if needed, no matter how large.",s.on("read",({start:e,end:t})=>this._dispatchRead(e,t)),this._sequentialBacking=s;const a=new Set;for(const o of this._orchestrator.workers){for(const e of o.pendingSlices)a.add(e);o.aborted=!0,o.pendingSlices.length=0}for(const o of this._orchestrator.queuedReads)for(const e of o.pendingSlices)a.add(e);this._orchestrator.workers.length=0,this._orchestrator.queuedReads.length=0;for(const o of a){const e=s._read(o.start,o.start+o.bytes.length);Xe(e)?e.then(e=>{e?(j(e.offset===o.start),o.resolve(e.bytes)):o.resolve(null)},e=>o.reject(e)):(j(null===e),o.resolve(null))}}_dispose(){this._orchestrator.dispose(),this._sequentialBacking&&(this._sequentialBacking._disposed=!0,this._sequentialBacking._dispose())}}const Gs=/^bytes=(\d+)-(\d*)$/,Qs=e=>{const t=Gs.exec(e.trim());if(!t)return null;const i=Number(t[1]),r=""===t[2]?null:Number(t[2]);return null!==r&&rthis._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const i=pe(this._cache,e,e=>e.start),r=-1!==i?this._cache[i]:null;if(r&&r.start<=e&&t<=r.end)return{bytes:r.bytes,view:r.view,offset:r.start};let n=e;const s=new Uint8Array(t-e);if(-1!==i)for(let c=i;c=t)break;const r=Math.max(e,i.start);r>n&&this._throwDueToCacheMiss();const a=Math.min(t,i.end);rn&&this._throwDueToCacheMiss();const{promise:a,resolve:o,reject:l}=ke();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:l}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0;else{if(!this._handleUnhandledError)throw e;this._handleUnhandledError(e)}})),a}_throwDueToCacheMiss(){throw new Error(this._cacheMissErrorMessage)}_pull(){return z(this,null,function*(){for(null!=this._reader||(this._reader=this._stream.getReader());this._currentIndex0;){const e=this._cache[0];if(this._maxRequestedIndex-e.end<=this._maxCacheSize)break;this._cache.shift()}this._currentIndex+=t.byteLength}this._pulling=!1})}_dispose(){var e;for(const t of this._pendingSlices)t.reject(new el);this._pendingSlices.length=0,this._cache.length=0,null==(e=this._reader)||e.cancel()}}const Js={fileSystem:(e,t)=>{const i=B(2,16);return{start:e=Math.floor((e-i)/i)*i,end:t=Math.ceil((t+i)/i)*i}},network:(e,t,i)=>{const r=B(2,16);e=Math.max(0,Math.floor((e-r)/r)*r);for(const n of i){const i=8*B(2,20),r=Math.max((n.startPos+n.targetPos)/2,n.targetPos-i);if(Ge(e,t,r,n.targetPos)){const e=n.targetPos-n.startPos,r=Math.ceil((e+1)/i)*i,s=B(2,Math.ceil(Math.log2(e+1))),a=Math.min(s,r);t=Math.max(t,n.startPos+a)}}return{start:e,end:t=Math.max(t,e+js)}}};class Zs{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1,this.queuedReads=[]}read(e,t,i,r){var n;j(!this.disposed);const s=this.options.prefetchProfile(e,t,this.workers),a=Math.max(s.start,i),o=Math.min(s.end,null!=(n=this.fileSize)?n:1/0,r);j(a<=e&&t<=o);let l=null;const c=pe(this.cache,e,e=>e.start),u=-1!==c?this.cache[c]:null;u&&u.start<=e&&t<=u.end&&(u.age=this.nextAge++,l={bytes:u.bytes,view:u.view,offset:u.start});const d=pe(this.cache,a,e=>e.start),h=l?null:new Uint8Array(t-e);let f=0,m=a;const p=[];if(-1!==d){for(let i=d;i=o)break;if(r.end<=a)continue;const n=Math.max(a,r.start),s=Math.min(o,r.end);if(j(n<=s),m=h.length&&(l={bytes:h,view:J(h),offset:e}),0===p.length)return j(l),l;const{promise:g,resolve:k,reject:y}=ke(),b=[];for(const v of p){const i=Math.max(e,v.start),r=Math.min(t,v.end);i===v.start&&r===v.end?b.push(v):ie.hole.start),i=-1!==t?this.queuedReads[t]:null;for(i&&v.start<=i.hole.end?(i.hole.end=Math.max(i.hole.end,v.end),i.strictTarget&&(i.strictTarget=e),T&&i.pendingSlices.push(T)):(t++,i={hole:{start:v.start,end:v.end},strictTarget:e,pendingSlices:T?[T]:[],age:this.nextAge++},this.queuedReads.splice(t,0,i));t+1i.hole.end)break;i.hole.end=Math.max(i.hole.end,e.hole.end),i.pendingSlices.push(...e.pendingSlices),i.strictTarget&&(i.strictTarget=e.strictTarget),i.age=Math.min(i.age,e.age),this.queuedReads.splice(t+1,1)}}}return l?g.catch(e=>{if(!this.disposed){if(!this.options.handleUnhandledError)throw e;this.options.handleUnhandledError(e)}}):(j(h),l=g.then(t=>t&&{bytes:t,view:J(t),offset:e})),l}checkHoleAgainstWorker(e,t,i){const r=B(2,17);if(Ge(t.start-r,t.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,t.end);for(let t=0;t=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i{if(e.running=!1,e.pendingSlices.length>0)e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0;else if(!e.aborted&&!this.disposed){if(!this.options.handleUnhandledError)throw t;this.options.handleUnhandledError(t)}}).finally(()=>{if(!e.running&&this.queuedReads.length>0){let e=0;for(let r=1;re.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;at.start&&(t.start=s),t.end<=t.start&&(i.holes.splice(e,1),e--)}0===i.holes.length&&(i.resolve(i.bytes),e.pendingSlices.splice(a,1),a--)}for(let a=0;ae){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t=e){for(const e of i.pendingSlices)e.resolve(null);this.queuedReads.splice(t,1),t--}else if(i.hole.end>e){i.hole.end=e,i.strictTarget=!0;for(let t=0;t=e&&(r.resolve(null),i.pendingSlices.splice(t,1),t--)}}}}signalWorkerStoppedRunning(e){e.running=!1,e.aborted||(e.pendingSlices.length=0)}onWorkerFinished(e){var t,i;const r=this.workers.indexOf(e);j(-1!==r),e.running=!1,this.workers.splice(r,1),null==(i=(t=this.options).onIdleWorkerRemoved)||i.call(t,e),null===this.fileSize&&this.supplyFileSize(e.currentPos);for(const n of e.pendingSlices)n.resolve(null)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=pe(this.cache,e.start,e=>e.start)+1;if(t>0){const i=this.cache[t-1];if(i.end>=e.end)return;if(i.end>e.start){const r=new Uint8Array(e.end-i.start);r.set(i.bytes,0),r.set(e.bytes,e.start-i.start),this.currentCacheSize+=e.end-i.end,i.bytes=r,i.view=J(r),i.end=e.end,t--,e=i}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length}else this.cache.splice(t,0,e),this.currentCacheSize+=e.bytes.length;for(let i=t+1;i=t.end){this.cache.splice(i,1),this.currentCacheSize-=t.bytes.length,i--;continue}const r=new Uint8Array(t.end-e.start);r.set(e.bytes,0),r.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=r,e.view=J(r),e.end=t.end,this.cache.splice(i,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let i=1;ithis._length)return null;const n=this._baseSource._read(this._offset+e,this._offset+t,this._offset+i,this._offset+r),s=e=>e?(e.offset-=this._offset,e):null;return Xe(n)?n.then(s):s(n)}_dispose(){var e;null==(e=this._ref)||e.free()}ref(){return null!=this._ref||(this._ref=this._baseSource.ref()),super.ref()}}var ta=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,n;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(n=r)}if("function"!==typeof r)throw new TypeError("Object 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Fs(e.slice(11)),i=t.get("uri");if(!i)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");const r=t.get("byterange");let a=null;if(null!==r&&(a=P(r)),a&&null===a.offset)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!w){const e={path:Ze(this.rootPath,i),offset:null!=(n=null==a?void 0:a.offset)?n:0,length:null!=(s=null==a?void 0:a.length)?s:null};if("AES-128"===(null==m?void 0:m.method)&&!m.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");k={timestamp:d,unixEpochTimestamp:h,firstSegment:null,sequenceNumber:null,location:e,duration:0,encryption:m,initSegment:null,lastProgramDateTimeSeconds:T}}f=null,null===b?y=null:b=null}else if(e.startsWith(Is)){const t=new Fs(e.slice(11)),i=t.get("method");if("NONE"===i)m=null;else if("AES-128"===i){const e=t.get("uri");if(!e)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let i=null;const r=t.get("iv");if(r){if(!ra.test(r))throw new Error(`Unsupported IV format '${r}'.`);let e=r.slice(2);e=e.padStart(32,"0"),i=new Uint8Array(fr);for(let t=0;t=8&&112===i[4]&&115===i[5]&&115===i[6]&&104===i[7]){const e=J(i).getUint32(0);r=sr(i.subarray(8,Math.min(e,i.length)))}}m={method:i,psshBox:r}}}}else if(e.startsWith(xs)){const t=e.slice(22),i=Number(t);if(!Number.isInteger(i)||i<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${t}'.`);I(i)}else if(e.startsWith(Cs)){const t=P(e.slice(17));if(null===t.offset){if(null===y)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");t.offset=y}b=t,y=t.offset+t.length}else if(e.startsWith(Bs)){if(w)continue;const t=e.slice(25),i=Date.parse(t);if(!Number.isFinite(i))continue;const r=i/1e3;if(T===r)continue;if(null===T&&this.segments.length>0){const e=X(this.segments),t=r-(e.timestamp+e.duration);for(const i of this.segments)i.unixEpochTimestamp=i.timestamp+t,c&&(i.timestamp=i.unixEpochTimestamp)}T=r,h=r,c&&(d=r)}else if("#EXT-X-DISCONTINUITY"===e)g=null;else if(e.startsWith(Es)){const t=e.slice(22),i=Number(t);if(!Number.isFinite(i)||i<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${t}'.`);this.refreshInterval=i,v=i}else{if("#EXT-X-ENDLIST"===e){this.streamHasEnded=!0;break}if(e.startsWith(_s)){"vod"===e.slice(21).toLowerCase()&&(this.streamHasEnded=!0)}}}else{if("#EXTM3U"!==e)throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");u=!0}}if(!u)throw new Error("Invalid M3U8 file; no #EXTM3U header.")})}getFirstSegment(){return z(this,null,function*(){var e;return 0===this.segments.length&&(yield this.runUpdateSegments()),null!=(e=this.segments[0])?e:null})}getSegmentAt(e,t){return z(this,null,function*(){0===this.segments.length&&(yield this.runUpdateSegments());let i=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){const r=pe(this.segments,e,e=>e.timestamp);if(-1===r)return null;if(r0;for(;;){if(re.segment===r);if(n)return n.age=this.nextInputCacheAge++,n.input;let s=null;(r.initSegment||r.firstSegment)&&(s=this.getInputForSegment(null!=(t=r.initSegment)?t:r.firstSegment));const a=R(_({},this.input._formatOptions),{isobmff:R(_({},this.input._formatOptions.isobmff),{resolveKeyId:(null==(i=this.input._formatOptions.isobmff)?void 0:i.resolveKeyId)&&(e=>{if(!r.encryption||"SAMPLE-AES"!==r.encryption.method&&"SAMPLE-AES-CTR"!==r.encryption.method||!r.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(e);let t=e.psshBoxes;const{psshBox:i}=r.encryption;return null!==i.keyIds&&!i.keyIds.includes(e.keyId)||t.some(e=>ar(e,i))||(t=[...t,i]),this.input._formatOptions.isobmff.resolveKeyId(R(_({},e),{psshBoxes:t}))})})}),o=new Jo({source:new Ws(r.location.path,e=>z(this,null,function*(){var t,i;j(e.isRoot);const n=R(_({},e),{isRoot:!1});let s;const a=r.location.offset>0||null!==r.location.length;if(r.encryption&&"SAMPLE-AES"!==r.encryption.method&&"SAMPLE-AES-CTR"!==r.encryption.method)if("AES-128"===r.encryption.method){const e=r.encryption;j(e.iv);let t=yield this.input._getSourceCached(n);if(a){const e=t.source.slice(r.location.offset,null!=(i=r.location.length)?i:void 0).ref();t.free(),t=e}const o=((e,t,i)=>{let r=!1,n=0;const s=B(2,16),a=new Sr;return new ReadableStream({pull:o=>z(null,null,function*(){r||(a.init(yield t()),r=!0);const l=s+16;let c=e.requestSliceRange(n,0,l);if(Xe(c)&&(c=yield c),!c||0===c.length)throw new Error("Invalid ciphertext.");const u=c.length;if(u%16!==0)throw new Error("Invalid ciphertext.");const d=u===l?u-16:u,h=nl(c,d),f=new Uint8Array(d);for(let e=0;e16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");const t=f.subarray(0,d-e);o.enqueue(t),o.close(),i()}}),cancel:()=>{i()}})})(new tl(t.source),()=>z(this,null,function*(){const t={stack:[],error:void 0,hasError:!1};try{const i=ta(t,yield this.input._getSourceCached({path:e.keyUri,isRoot:!1},Yo),!1),r=new tl(i.source),n=yield r.requestSlice(0,fr);if(!n)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");return{key:nl(n,fr),iv:e.iv}}catch(i){t.error=i,t.hasError=!0}finally{ia(t)}}),()=>{t.free()});s=new Ys(o).ref()}else j(!1);else if(s=yield this.input._getSourceCached(n),a){const e=s.source.slice(r.location.offset,null!=(t=r.location.length)?t:void 0).ref();s.free(),s=e}return s})),formats:this.input._formats.filter(e=>!(e instanceof Ia)),initInput:null!=s?s:void 0,formatOptions:a});o._onFormatDetermined=e=>{var t,i;if(("SAMPLE-AES"===(null==(t=r.encryption)?void 0:t.method)||"SAMPLE-AES-CTR"===(null==(i=r.encryption)?void 0:i.method))&&!e._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:r,input:o,age:this.nextInputCacheAge++});if(this.inputCache.length>4){const e=tt(this.inputCache,e=>e.age);j(-1!==e),this.inputCache.splice(e,1)}return o}getLiveRefreshInterval(){return z(this,null,function*(){return 0===this.getRemainingWaitTimeMs()&&(yield this.runUpdateSegments()),this.streamHasEnded?null:this.refreshInterval})}}class aa extends ir{constructor(e){super(e),this.metadataPromise=null,this.trackBackings=null,this.internalTracks=null,this.segmentedInputs=[],this.hasMasterPlaylist=!0}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>z(this,null,function*(){j(this.input._rootSource instanceof Us);const e=yield this.input._reader.requestEntireFile();j(e);const t=vl(e,e.length,{ignore:Rs}),{rootPath:i}=this.input._rootSource,r=[],n=[];for(let u=1;u"video"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],a=[...new Set(n.filter(e=>"audio"===e.attributes.get("type").toLowerCase()).map(e=>e.attributes.get("group-id")))],o=yield Promise.all(r.map((e,t)=>z(this,null,function*(){var r,o,l,c;const u=[],d=e.attributes.get("codecs");let h;if(d)h=d.split(",").map(e=>e.trim());else{const t=this.getSegmentedInputForPath(e.fullPath),i=yield t.getTrackBackings(),r=yield Promise.all(i.map(e=>z(this,null,function*(){return{track:e,codec:yield e.getCodec()}})));h=yield Promise.all(r.filter(e=>null!==e.codec).map(e=>e.track.getDecoderConfig().then(e=>e.codec)))}const f=e.attributes.get("video"),m=e.attributes.get("audio"),p=h.some(e=>_i.includes(ji(e))),g=h.some(e=>Fi.includes(ji(e)));if(null!==f&&!p){if(!s.includes(f))throw new Error(`Invalid M3U8 file; variant stream references video group "${f}" which is not defined in any #EXT-X-MEDIA tags.`);const e=n.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===f&&"video"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Ze(i,t),n=this.getSegmentedInputForPath(r),s=(yield n.getTrackBackings()).find(e=>"video"===e.getType());if(!s||null===(yield s.getCodec()))break e;const a=yield s.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null});j(null!==a),h.push(a)}}if(null!==m&&!g){if(!a.includes(m))throw new Error(`Invalid M3U8 file; variant stream references audio group "${m}" which is not defined in any #EXT-X-MEDIA tags.`);const e=n.find(e=>{const t=e.attributes.get("group-id"),i=e.attributes.get("type");return t===m&&"audio"===i.toLowerCase()});e:if(e){const t=e.attributes.get("uri");if(null===t)break e;const r=Ze(i,t),n=this.getSegmentedInputForPath(r),s=(yield n.getTrackBackings()).find(e=>"audio"===e.getType());if(!s||null===(yield s.getCodec()))break e;const a=yield s.getDecoderConfig().then(e=>{var t;return null!=(t=null==e?void 0:e.codec)?t:null});j(null!==a),h.push(a)}}h=[...new Set(h)];let k=null,y=null;const b=e.attributes.getAsNumber("bandwidth");j(null!==b);const T=e.attributes.getAsNumber("average-bandwidth"),v=e.attributes.get("name");for(const i of h){const d=ji(i);if(null!==d)if(_i.includes(d)){if(null!==k)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");k=i;const a=e.attributes.get("video");if(null===a){const i=e.attributes.get("resolution");let r=null,n=null;if(i){const e=i.match(/^(\d+)x(\d+)$/);e&&(r=Number(e[1]),n=Number(e[2]))}u.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:xe,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:k,pairingMask:BigInt("1")<0?r:null}})}else{if(!a.includes(r))throw new Error(`Invalid M3U8 file; variant stream references audio group "${r}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of n){const n=i.attributes.get("group-id"),s=i.attributes.get("type");if(n!==r||"audio"!==s.toLowerCase())continue;const a=null!=(l=i.attributes.get("channels"))?l:e.attributes.get("channels"),o=null!==a?Number(a.split("/")[0]):null;u.push({id:-1,demuxer:this,backingTrack:null,default:ua(i.attributes),autoselect:ua(i.attributes)||da(i.attributes),languageCode:ha(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:null!=(c=i.fullPath)?c:e.fullPath,fullCodecString:y,pairingMask:BigInt("1")<0?o:null}})}}}}return u}))),l=[],c=e=>{var t,i;const r=l.find(t=>t.fullPath===e.fullPath&&t.info.type===e.info.type);r?(r.pairingMask|=e.pairingMask,r.default||(r.default=e.default),r.autoselect||(r.autoselect=e.autoselect),r.lineNumber=Math.min(r.lineNumber,e.lineNumber),null!==e.peakBitrate&&(r.peakBitrate=Math.max(null!=(t=r.peakBitrate)?t:-1/0,e.peakBitrate)),null!==e.averageBitrate&&(r.averageBitrate=Math.max(null!=(i=r.averageBitrate)?i:-1/0,e.averageBitrate)),r.languageCode===xe&&(r.languageCode=e.languageCode)):(e.id=l.length+1,l.push(e))};for(const u of o)for(const e of u)c(e);l.sort((e,t)=>e.lineNumber-t.lineNumber),this.trackBackings=[];for(const u of l)"video"===u.info.type?this.trackBackings.push(new la(u)):this.trackBackings.push(new ca(u));this.internalTracks=l}))()}getTrackBackings(){return z(this,null,function*(){return yield this.readMetadata(),j(this.trackBackings),this.trackBackings})}getSegmentedInputForPath(e){let t=this.segmentedInputs.find(t=>t.path===e);if(t)return t;let i=null;if(this.internalTracks){i=this.internalTracks.filter(t=>t.fullPath===e).map(e=>({id:e.id,type:e.info.type}))}return t=new sa(this,e,i,null),this.segmentedInputs.push(t),t}getMetadataTags(){return z(this,null,function*(){return{}})}getMimeType(){return z(this,null,function*(){return bs})}dispose(){if(this.segmentedInputs){for(const e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}}class oa{constructor(e){this.internalTrack=e,this.hydrationPromise=null}hydrate(){var e;return null!=(e=this.hydrationPromise)?e:this.hydrationPromise=(()=>z(this,null,function*(){const e=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath);let t=null;const i=(yield e.getTrackBackings()).filter(e=>e.getType()===this.getType());if(1===i.length)t=i[0];else if(this instanceof la){for(const r of i)if((yield r.getCodec())===this.getCodec()){t=r;break}}else{j(this instanceof ca);for(const e of i)if((yield e.getCodec())===this.getCodec()){t=e;break}}if(!t)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=t}))()}delegate(e){return this.internalTrack.backingTrack?e():this.hydrate().then(e)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return R(_({},dt),{default:this.internalTrack.autoselect,primary:this.internalTrack.default})}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){j(this.internalTrack.demuxer.internalTracks);const e=this.internalTrack.info.type;let t=0;for(const i of this.internalTrack.demuxer.internalTracks)if(i.info.type===e&&t++,i===this.internalTrack)break;return t}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getUnixTimeForTimestamp(e){return this.delegate(()=>this.internalTrack.backingTrack.getUnixTimeForTimestamp(e))}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}getDurationFromMetadata(e){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(e)})}getLiveRefreshInterval(){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()})}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}getFirstPacket(e){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(e)})}getPacket(e,t){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getPacket(e,t)})}getKeyPacket(e,t){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(e,t)})}getNextPacket(e,t){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getNextPacket(e,t)})}getNextKeyPacket(e,t){return z(this,null,function*(){return yield this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(e,t)})}}class la extends oa{constructor(e){super(e)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return ji(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}getColorSpace(){return z(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.getColorSpace()})}canBeTransparent(){return z(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.canBeTransparent()})}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}getDecoderConfig(){return z(this,null,function*(){return yield this.hydrate(),this.backingVideoTrack.getDecoderConfig()})}}class ca extends oa{constructor(e){super(e)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return ji(this.internalTrack.fullCodecString)}getNumberOfChannels(){return null!==this.internalTrack.info.numberOfChannels?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}getDecoderConfig(){return z(this,null,function*(){return yield this.hydrate(),this.backingAudioTrack.getDecoderConfig()})}}const ua=e=>{const t=e.get("default");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},da=e=>{const t=e.get("autoselect");if(null===t)return!1;const i=t.toUpperCase();if("YES"===i)return!0;if("NO"===i)return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},ha=e=>{if(null===e)return xe;const t=e.split("-")[0];return t||xe};class fa{constructor(){this._isIsobmff=!1}}class ma extends fa{constructor(){super(...arguments),this._isIsobmff=!0}_getMajorBrand(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,12);if(Xe(t)&&(t=yield t),!t)return null;t.skip(4);const i=Tl(t,4);return"ftyp"!==i&&"styp"!==i?null:Tl(t,4)})}_createDemuxer(e){return new wr(e)}}class pa extends ma{_canReadInput(e){return z(this,null,function*(){const t=yield this._getMajorBrand(e);if(null!==t)return"qt "!==t;let i=0;for(let r=0;r<10;r++){let t=e._reader.requestSlice(i,8);if(Xe(t)&&(t=yield t),!t)return!1;let r=dl(t),n=8;if(1===r){let t=e._reader.requestSlice(i+8,8);if(Xe(t)&&(t=yield t),!t)return!1;r=pl(t),n=16}if(r8)return!1;if(Gr(i,r)!==qr.EBML)return!1;const n=Yr(i);if("number"!==typeof n)return!1;let s=e._reader.requestSlice(i.filePos,n);if(Xe(s)&&(s=yield s),!s)return!1;const a=i.filePos;for(;s.filePos<=a+n-2;){const e=Jr(s);if(!e)break;const{id:i,size:r}=e,n=s.filePos;if(void 0===r)return!1;switch(i){case qr.EBMLVersion:if(1!==Gr(s,r))return!1;break;case qr.EBMLReadVersion:if(1!==Gr(s,r))return!1;break;case qr.DocType:if(Zr(s,r)!==t)return!1;break;case qr.DocTypeVersion:if(Gr(s,r)>4)return!1}s.filePos=n+r}return!0})}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new Bn(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class ya extends ka{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class ba extends fa{_canReadInput(e){return z(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,Cl);if(Xe(i)&&(i=yield i),!i)break;const r=Rl(i);if(!r)break;t=i.filePos+r.size}const i=yield Fn(e._reader,t,t+4096);if(!i)return!1;const r=i.header,n=Qi(r.mpegVersionId,r.channel);let s=e._reader.requestSlice(i.startPos+n,4);if(Xe(s)&&(s=yield s),!s)return!1;const a=dl(s);if(a===$i||a===Gi)return!0;t=i.startPos+i.header.totalSize;const o=yield Fn(e._reader,t,t+4);if(!o)return!1;const l=o.header;return r.channel===l.channel&&r.sampleRate===l.sampleRate})}_createDemuxer(e){return new An(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class Ta extends fa{_canReadInput(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,12);if(Xe(t)&&(t=yield t),!t)return!1;const i=Tl(t,4);if("RIFF"!==i&&"RIFX"!==i&&"RF64"!==i)return!1;t.skip(4);return"WAVE"===Tl(t,4)})}_createDemuxer(e){return new Gn(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class va extends fa{_canReadInput(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,4);return Xe(t)&&(t=yield t),!!t&&"OggS"===Tl(t,4)})}_createDemuxer(e){return new Hn(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class Sa extends fa{_canReadInput(e){return z(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,Cl);if(Xe(i)&&(i=yield i),!i)break;const r=Rl(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSlice(t,4);return Xe(i)&&(i=yield i),!!i&&"fLaC"===Tl(i,4)})}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new is(e)}}class wa extends fa{_canReadInput(e){return z(this,null,function*(){let t=0;for(;;){let i=e._reader.requestSlice(t,Cl);if(Xe(i)&&(i=yield i),!i)break;const r=Rl(i);if(!r)break;t=i.filePos+r.size}let i=e._reader.requestSliceRange(t,7,9);if(Xe(i)&&(i=yield i),!i)return!1;const r=Jn(i);if(!r)return!1;if(t+=r.frameLength,i=e._reader.requestSliceRange(t,7,9),Xe(i)&&(i=yield i),!i)return!1;const n=Jn(i);return!!n&&(r.objectType===n.objectType&&r.samplingFrequencyIndex===n.samplingFrequencyIndex&&r.channelConfiguration===n.channelConfiguration)})}_createDemuxer(e){return new es(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}class Pa extends fa{_canReadInput(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,205);if(Xe(t)&&(t=yield t),!t)return!1;const i=nl(t,205);return 71===i[0]&&71===i[188]||(71===i[0]&&71===i[204]||71===i[4]&&71===i[196])})}_createDemuxer(e){return new us(e)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}}class Ia extends fa{_canReadInput(e){return z(this,null,function*(){let t=e._reader.requestSlice(0,7);if(Xe(t)&&(t=yield t),!t)return!1;if(!("#EXTM3U"===Tl(t,7)))return!1;if(!(e._rootSource instanceof Us))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return e._rootSource._usedForHls=!0,!0})}_createDemuxer(e){return new aa(e)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return bs}}const xa=new pa,Ca=new ga,Ba=new ka,Ea=new ya,_a=new ba,Ra=new Ta,Fa=new va,Aa=new wa,Da=new Sa,Ma=new Pa,Na=new Ia,Oa=[Na,xa,Ca,Ba,Ea,Ra,Fa,Da,_a,Aa,Ma],za=[Na,xa,Ca,_a,Aa,Ma];var La=function(e){return function(t){function i(i){t.error=t.hasError?new e(i,t.error,"An error was suppressed during disposal."):i,t.hasError=!0}var r,n=0;return function e(){for(;r=t.stack.pop();)try{if(!r.async&&1===n)return n=0,t.stack.push(r),Promise.resolve().then(e);if(r.dispose){var s=r.dispose.call(r.value);if(r.async)return n|=2,Promise.resolve(s).then(e,function(t){return i(t),e()})}else n|=1}catch(a){i(a)}if(1===n)return t.hasError?Promise.reject(t.error):Promise.resolve();if(t.hasError)throw t.error}()}}("function"===typeof SuppressedError?SuppressedError:function(e,t,i){var r=new Error(i);return r.name="SuppressedError",r.error=e,r.suppressed=t,r});Ye();let Ua=-1/0,qa=-1/0,Wa=null;"undefined"!==typeof FinalizationRegistry&&(Wa=new FinalizationRegistry(e=>{const t=performance.now();"video"===e.type?(t-Ua>=1e3&&(lt._error("A VideoSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your VideoSamples as soon as you're done using them."),Ua=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-qa>=1e3&&(lt._error("An AudioSample was garbage collected without first being closed. For proper resource management, make sure to call close() on all your AudioSamples as soon as you're done using them."),qa=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));class Ha{constructor(){this._referenceCount=0,this._lastAllocationBuffer=null}}const Va=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],ja=new Set(Va);class Ka{get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(De*this.timestamp)}get microsecondDuration(){return Math.trunc(De*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){var i,r,n,s,a,o,l,c,u,d,h,f,m,p,g,k,y,b,T,v,S,w,P,I,x,C,B,E,_,R,F;if(this._closed=!1,e instanceof ArrayBuffer||"undefined"!==typeof SharedArrayBuffer&&e instanceof SharedArrayBuffer||ArrayBuffer.isView(e)){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0===t.format||!ja.has(t.format))throw new TypeError("init.format must be one of: "+Va.join(", "));if(!Number.isInteger(t.codedWidth)||t.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(t.codedHeight)||t.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.layout){if(!Array.isArray(t.layout))throw new TypeError("init.layout, when provided, must be an array.");for(const e of t.layout){if(!e||"object"!==typeof e||Array.isArray(e))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(e.offset)||e.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(e.stride)||e.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==t.visibleRect&&rt(t.visibleRect,"init.visibleRect"),void 0!==t.displayWidth&&(!Number.isInteger(t.displayWidth)||t.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(void 0!==t.displayHeight&&(!Number.isInteger(t.displayHeight)||t.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(void 0!==t.displayWidth!==(void 0!==t.displayHeight))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this.format=t.format,this.rotation=null!=(i=t.rotation)?i:0,this.timestamp=t.timestamp,this.duration=null!=(r=t.duration)?r:0;const m=null!=(n=t.layout)?n:io(t.format,t.codedWidth,t.codedHeight);let p=null!=(s=t.colorSpace)?s:null;null===p&&(p="RGBA"===this.format||"RGBX"===this.format||"BGRA"===this.format||"BGRX"===this.format?{primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:{primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.visibleRect={left:null!=(o=null==(a=t.visibleRect)?void 0:a.left)?o:0,top:null!=(c=null==(l=t.visibleRect)?void 0:l.top)?c:0,width:null!=(d=null==(u=t.visibleRect)?void 0:u.width)?d:t.codedWidth,height:null!=(f=null==(h=t.visibleRect)?void 0:h.height)?f:t.codedHeight},void 0!==t.displayWidth?(this.squarePixelWidth=this.rotation%180===0?t.displayWidth:t.displayHeight,this.squarePixelHeight=this.rotation%180===0?t.displayHeight:t.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height),this._data=t._doNotCopy?Y(e):Y(e).slice(),this._layout=m,this.colorSpace=new Ya(p)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==(null==t?void 0:t.rotation)&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==(null==t?void 0:t.timestamp)&&!Number.isFinite(null==t?void 0:t.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==(null==t?void 0:t.duration)&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");void 0!==(null==t?void 0:t.visibleRect)&&rt(t.visibleRect,"init.visibleRect"),this._data=e,this._layout=null,this.format=e.format,this.visibleRect={left:null!=(p=null==(m=e.visibleRect)?void 0:m.x)?p:0,top:null!=(k=null==(g=e.visibleRect)?void 0:g.y)?k:0,width:null!=(b=null==(y=e.visibleRect)?void 0:y.width)?b:e.codedWidth,height:null!=(v=null==(T=e.visibleRect)?void 0:T.height)?v:e.codedHeight},this.rotation=null!=(S=null==t?void 0:t.rotation)?S:0,this.squarePixelWidth=e.displayWidth,this.squarePixelHeight=e.displayHeight,this.timestamp=null!=(w=null==t?void 0:t.timestamp)?w:e.timestamp/1e6,this.duration=null!=(I=null==t?void 0:t.duration)?I:(null!=(P=e.duration)?P:0)/1e6,this.colorSpace=new Ya(e.colorSpace)}else if("undefined"!==typeof HTMLImageElement&&e instanceof HTMLImageElement||"undefined"!==typeof SVGImageElement&&e instanceof SVGImageElement||"undefined"!==typeof ImageBitmap&&e instanceof ImageBitmap||"undefined"!==typeof HTMLVideoElement&&e instanceof HTMLVideoElement||"undefined"!==typeof HTMLCanvasElement&&e instanceof HTMLCanvasElement||"undefined"!==typeof OffscreenCanvas&&e instanceof OffscreenCanvas){if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(void 0!==t.visibleRect&&rt(t.visibleRect,"init.visibleRect"),"undefined"!==typeof VideoFrame)return new Ka(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*De),duration:Math.trunc((null!=(x=t.duration)?x:0)*De)||void 0,visibleRect:t.visibleRect&&{x:t.visibleRect.left,y:t.visibleRect.top,width:t.visibleRect.width,height:t.visibleRect.height}}),t);let i=0,r=0;if("naturalWidth"in e?(i=e.naturalWidth,r=e.naturalHeight):"videoWidth"in e?(i=e.videoWidth,r=e.videoHeight):"width"in e&&(i=Number(e.width),r=Number(e.height)),!i||!r)throw new TypeError("Could not determine dimensions.");const n=null!=(C=t.visibleRect)?C:{left:0,top:0,width:i,height:r},s=new OffscreenCanvas(n.width,n.height),a=s.getContext("2d",{alpha:We(),willReadFrequently:!0});if(!a)throw new Error("OffscreenCanvas must have support for the '2d' context in order to create a VideoSample from this data.");a.drawImage(e,-n.left,-n.top),this._data=s,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:n.width,height:n.height},this.squarePixelWidth=n.width,this.squarePixelHeight=n.height,this.rotation=null!=(B=t.rotation)?B:0,this.timestamp=t.timestamp,this.duration=null!=(E=t.duration)?E:0,this.colorSpace=new Ya({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else{if(!(e instanceof Ha))throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");if(!t||"object"!==typeof t)throw new TypeError("init must be an object.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(t.timestamp))throw new TypeError("init.timestamp must be a number.");if(void 0!==t.duration&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(this._data=e,e._referenceCount++,this.format=e.getFormat(),null!==this.format&&!Va.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:e.getCodedWidth(),height:e.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=e.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=e.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=null!=(_=t.rotation)?_:0,this.timestamp=t.timestamp,this.duration=null!=(R=t.duration)?R:0,this.colorSpace=e.getColorSpace()}this.encodeOptions=null!=(F=null==t?void 0:t.encodeOptions)?F:{},this.pixelAspectRatio=it({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),null==Wa||Wa.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return j(null!==this._data),this._data instanceof Ha?new Ka(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):Ja(this._data)?new Ka(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation,encodeOptions:this.encodeOptions}):this._data instanceof Uint8Array?(j(this._layout),new Ka(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions,_doNotCopy:!0})):new Ka(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight,encodeOptions:this.encodeOptions})}close(){this._closed||(null==Wa||Wa.unregister(this),this._data instanceof Ha?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):Ja(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){var t;if(to(e),this._closed)throw new Error("VideoSample is closed.");if(null==(null!=(t=e.format)?t:this.format))throw new Error("Cannot get allocation size when format is null.");if(Ja(this._data))return this._data.allocationSize(e);return no(this,e).allocationSize}copyTo(e){return z(this,arguments,function*(e,t={}){var i,r;if(!ce(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(to(t),this._closed)throw new Error("VideoSample is closed.");if(null==(null!=(i=t.format)?i:this.format))throw new Error("Cannot copy video sample data when format is null.");if(j(null!==this._data),Ja(this._data))return this._data.copyTo(e,t);if(t.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(t.format)){if(!(this._data instanceof Ha)){if("undefined"===typeof VideoFrame)throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");const i=this.toVideoFrame(),r=yield i.copyTo(e,t);return i.close(),r}{const i={stack:[],error:void 0,hasError:!1};try{const n=function(e,t,i){if(null!==t&&void 0!==t){if("object"!==typeof t&&"function"!==typeof t)throw new TypeError("Object expected.");var r,n;if(i){if(!Symbol.asyncDispose)throw new TypeError("Symbol.asyncDispose is not defined.");r=t[Symbol.asyncDispose]}if(void 0===r){if(!Symbol.dispose)throw new TypeError("Symbol.dispose is not defined.");r=t[Symbol.dispose],i&&(n=r)}if("function"!==typeof r)throw new TypeError("Object not disposable.");n&&(r=function(){try{n.call(this)}catch(e){return Promise.reject(e)}}),e.stack.push({value:t,dispose:r,async:i})}else i&&e.stack.push({async:!0});return t}(i,yield this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},null!=(r=t.colorSpace)?r:"srgb"),!1);if(!(n instanceof Ka))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(n.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${n.format}' instead.`);return yield n.copyTo(e,t)}catch(u){i.error=u,i.hasError=!0}finally{La(i)}}}const n=no(this,t);j(this.format);const s=Y(e);if(s.byteLength!(e.data instanceof Uint8Array)||!Number.isInteger(e.stride)||e.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');o=e}else if(this._data instanceof Uint8Array)j(this._layout),j(this._layout.length===a.length),o=this._layout.map((e,t)=>{const i=Math.ceil(this.codedHeight/a[t].heightDivisor);return{data:this._data.subarray(e.offset,e.offset+e.stride*i),stride:e.stride}});else{const e=this._data.getContext("2d");j(e);const t=e.getImageData(0,0,this.codedWidth,this.codedHeight);o=[{data:Y(t.data),stride:4*this.codedWidth}]}const l=[],c=a.length;for(let d=0;di.byteLength)throw new Error("Source buffer OOB read.");if(a+c>s.byteLength)throw new Error("Destination buffer OOB write.");const n=i.subarray(r,r+c);s.set(n,a),r+=t,a+=e.destinationStride}l.push(u)}if(void 0!==t.format){const e=this.format.startsWith("RGB")!==t.format.startsWith("RGB"),i=this.format.includes("X")&&t.format.includes("A");if(e||i)for(let t=0;te+t.data.byteLength,0),i=new Uint8Array(t);let r=0;const n=[];for(const s of e)i.set(s.data,r),n.push(r),r+=s.data.byteLength;return new VideoFrame(i,{format:this.format,layout:e.map((e,t)=>({offset:n[t],stride:e.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}return Ja(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?(j(this._layout),new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,layout:this._layout,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace,visibleRect:this.visibleRect,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,i,r,n,s,a,o,l){let c=0,u=0,d=this.displayWidth,h=this.displayHeight,f=0,m=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(c=t,u=i,d=r,h=n,f=s,m=a,void 0!==o?(p=o,g=l):(p=d,g=h)):(f=t,m=i,void 0!==r&&(p=r,g=n)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(c))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(f))throw new TypeError("dx must be a number.");if(!Number.isFinite(m))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:c,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(c,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const y=f+p/2,b=m+g/2;e.translate(y,b),e.rotate(this.rotation*Math.PI/180);const T=this.rotation%180===0?1:p/g;e.scale(1/T,T),e.drawImage(k,c,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){var i,r,n,s,a,o,l,c,u;if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&eo(t.crop,"options.");const d=e.canvas.width,h=e.canvas.height,f=null!=(i=t.rotation)?i:this.rotation,[m,p]=f%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let g,k,y,b,T=t.crop;T&&(T=Za(T,m,p));const{sx:v,sy:S,sWidth:w,sHeight:P}=this._rotateSourceRegion(null!=(n=null==(r=t.crop)?void 0:r.left)?n:0,null!=(a=null==(s=t.crop)?void 0:s.top)?a:0,null!=(l=null==(o=t.crop)?void 0:o.width)?l:m,null!=(u=null==(c=t.crop)?void 0:c.height)?u:p,f);if("fill"===t.fit)g=0,k=0,y=d,b=h;else{const[e,i]=t.crop?[t.crop.width,t.crop.height]:[m,p],r="contain"===t.fit?Math.min(d/e,h/i):Math.max(d/e,h/i);y=e*r,b=i*r,g=(d-y)/2,k=(h-b)/2}e.save();const I=f%180===0?1:y/b;e.translate(d/2,h/2),e.rotate(f*Math.PI/180),e.scale(1/I,I),e.translate(-d/2,-h/2),e.drawImage(this.toCanvasImageSource(),v,S,w,P,g,k,y,b),e.restore()}_rotateSourceRegion(e,t,i,r,n){return 90===n?[e,t,i,r]=[t,this.squarePixelHeight-e-i,r,i]:180===n?[e,t]=[this.squarePixelWidth-e-i,this.squarePixelHeight-t-r]:270===n&&([e,t,i,r]=[this.squarePixelWidth-t-r,e,r,i]),{sx:e,sy:t,sWidth:i,sHeight:r}}_drawWithFitAndMipmapping(e,t,i){const r=e.width,n=e.height,[s,a]=i.rotation%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],o=i.crop?i.crop.width:s,l=i.crop?i.crop.height:a;let c=0;2*r0?Qa(u,d):{canvas:e,context:t,isNew:i.targetIsFresh};f.imageSmoothingQuality="high",i.fillBlack?(f.fillStyle="black",f.fillRect(0,0,u,d)):m||f.clearRect(0,0,u,d),this.drawWithFit(f,{fit:i.fit,rotation:i.rotation,crop:i.crop}),f.globalCompositeOperation="copy";for(let p=c;p>1;p--){const e=r*B(2,p),t=n*B(2,p);f.drawImage(h,0,0,e,t,0,0,e/2,t/2)}f.globalCompositeOperation="source-over",c>0&&(t.imageSmoothingQuality="high",t.globalCompositeOperation="copy",t.drawImage(h,0,0,2*r,2*n,0,0,r,n),t.globalCompositeOperation="source-over")}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(j(null!==this._data),this._data instanceof Ha||this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}transform(e){return z(this,null,function*(){var t,i,r,n,s;if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.width&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(void 0!==e.height&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(void 0!==e.roundDimensionsTo&&(!Number.isInteger(e.roundDimensionsTo)||e.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(void 0!==e.fit&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==e.width&&void 0!==e.height&&void 0===e.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==e.rotate&&![0,90,180,270].includes(e.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(void 0!==e.crop&&eo(e.crop,"options."),void 0!==e.alpha&&!["keep","discard"].includes(e.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");const a=K(this.rotation+(null!=(t=e.rotate)?t:0)),[o,l]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth];let c=e.crop;c&&(c=Za(c,o,l));const u=c?c.width:o,d=c?c.height:l,h=u/d;let f,m;void 0!==e.width&&void 0===e.height?(f=e.width,m=f/h):void 0===e.width&&void 0!==e.height?(m=e.height,f=m*h):void 0!==e.width&&void 0!==e.height?(f=e.width,m=e.height):(f=u,m=d),f=Be(f,null!=(i=e.roundDimensionsTo)?i:1),m=Be(m,null!=(r=e.roundDimensionsTo)?r:1);const p={width:f,height:m,fit:null!=(n=e.fit)?n:"fill",rotation:a,crop:null!=c?c:{left:0,top:0,width:o,height:l},alpha:null!=(s=e.alpha)?s:"keep"};for(const e of Xa){let t=e(this,p);if(Xe(t)&&(t=yield t),null!==t)return t}const{canvas:g,context:k,isNew:y}=Qa(p.width,p.height);return this._drawWithFitAndMipmapping(g,k,{fit:p.fit,rotation:p.rotation,crop:p.crop,targetIsFresh:y,fillBlack:"discard"===p.alpha}),new Ka(g,{timestamp:this.timestamp,duration:this.duration,rotation:0})})}setRotation(e){if(![0,90,180,270].includes(e))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}setDuration(e){if(!Number.isFinite(e)||e<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=e}setEncodeOptions(e){if(!e||"object"!==typeof e)throw new TypeError("newEncodeOptions must be an object.");this.encodeOptions=e}[Symbol.dispose](){this.close()}}const Xa=[],$a=[];let Ga=0;const Qa=(e,t)=>{for(const n of $a)if(n.canvas.width===e&&n.canvas.height===t)return n.age=Ga++,{canvas:n.canvas,context:n.context,isNew:!1};let i;if("undefined"!==typeof OffscreenCanvas)i=new OffscreenCanvas(e,t);else{if("undefined"===typeof window||"undefined"===typeof document)throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");i=document.createElement("canvas"),i.width=e,i.height=t}const r=i.getContext("2d",{alpha:!0,willReadFrequently:!1});if(!r)throw new Error("The '2d' canvas context is required to transform VideoSamples. Register a custom transformer using registerVideoSampleTransformer to work around this limitation.");return $a.length>=3&&$a.splice(tt($a,e=>e.age),1),$a.push({canvas:i,context:r,age:Ga++}),{canvas:i,context:r,isNew:!0}};class Ya{constructor(e){var t,i,r,n;if(void 0!==e){if(!e||"object"!==typeof e)throw new TypeError("init.colorSpace, when provided, must be an object.");const t=Object.keys(te);if(null!=e.primaries&&!t.includes(e.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${t.join(", ")}.`);const i=Object.keys(re);if(null!=e.transfer&&!i.includes(e.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${i.join(", ")}.`);const r=Object.keys(se);if(null!=e.matrix&&!r.includes(e.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${r.join(", ")}.`);if(null!=e.fullRange&&"boolean"!==typeof e.fullRange)throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}this.primaries=null!=(t=null==e?void 0:e.primaries)?t:null,this.transfer=null!=(i=null==e?void 0:e.transfer)?i:null,this.matrix=null!=(r=null==e?void 0:e.matrix)?r:null,this.fullRange=null!=(n=null==e?void 0:e.fullRange)?n:null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const Ja=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,Za=(e,t,i)=>{const r=Math.min(e.left,t),n=Math.min(e.top,i),s=Math.min(e.width,t-r),a=Math.min(e.height,i-n);return j(s>=0),j(a>=0),{left:r,top:n,width:s,height:a}},eo=(e,t)=>{if(!e||"object"!==typeof e)throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(e.left)||e.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(e.top)||e.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(e.width)||e.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(e.height)||e.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},to=e=>{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.colorSpace&&!["display-p3","srgb"].includes(e.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(void 0!==e.format&&"string"!==typeof e.format)throw new TypeError("options.format, when provided, must be a string.");if(void 0!==e.layout){if(!Array.isArray(e.layout))throw new TypeError("options.layout, when provided, must be an array.");for(const t of e.layout){if(!t||"object"!==typeof t)throw new TypeError("Each entry in options.layout must be an object.");if(!Number.isInteger(t.offset)||t.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(t.stride)||t.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(void 0!==e.rect){if(!e.rect||"object"!==typeof e.rect)throw new TypeError("options.rect, when provided, must be an object.");if(void 0!==e.rect.x&&(!Number.isInteger(e.rect.x)||e.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(void 0!==e.rect.y&&(!Number.isInteger(e.rect.y)||e.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(void 0!==e.rect.width&&(!Number.isInteger(e.rect.width)||e.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(void 0!==e.rect.height&&(!Number.isInteger(e.rect.height)||e.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},io=(e,t,i)=>{const r=ro(e),n=[];let s=0;for(const a of r){const e=Math.ceil(t/a.widthDivisor),r=Math.ceil(i/a.heightDivisor),o=e*a.sampleBytes,l=o*r;n.push({offset:s,stride:o}),s+=l}return n},ro=e=>{const t=(e,t,i,r,n)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:i,heightDivisor:r},{sampleBytes:t,widthDivisor:i,heightDivisor:r}];return n&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:ve(e),j(!1)}},no=(e,t)=>{const i={left:0,top:0,width:e.codedWidth,height:e.codedHeight},r=t.rect,n=so(i,r,e.codedWidth,e.codedHeight,e.format),s=t.layout;let a;if(t.format&&t.format!==e.format){if(!["RGBA","RGBX","BGRA","BGRX"].includes(t.format))throw new Error("NotSupportedError: Invalid destination format.");a=t.format}else a=e.format;return oo(n,a,s)},so=(e,t,i,r,n)=>{const s=_({},e);if(void 0!==t){if(0===t.width||0===t.height)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>i)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");s.x=t.x||0,s.y=t.y||0,s.width=t.width||0,s.height=t.height||0}if(!ao(n,s))throw new TypeError("visibleRect alignment is invalid for the format.");return s},ao=(e,t)=>{if(null===e)return!0;const i=ro(e);for(let r=0;r{const r=ro(t),n=r.length;if(void 0!==i&&i.length!==n)throw new TypeError(`Layout must have ${n} planes.`);let s=0;const a=[],o=[];for(let l=0;l4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e 0.");if(!Number.isInteger(e.numberOfChannels)||0===e.numberOfChannels)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(null==e?void 0:e.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/(ho(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let i;if(this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=t,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp,this.duration=t/e.sampleRate,e.data instanceof ArrayBuffer)i=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");i=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const r=this.numberOfFrames*this.numberOfChannels*ho(this.format);if(i.byteLength=this.numberOfFrames)throw new RangeError("frameOffset out of range");const s=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-n;if(s>this.numberOfFrames-n)throw new RangeError("frameCount out of range");const a=ho(r),o=fo(r);if(o&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!o&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(o?s:s*this.numberOfChannels)*a}copyTo(e,t){if(!ce(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!Number.isInteger(t.planeIndex)||t.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==t.format&&!lo.has(t.format))throw new TypeError("Invalid format.");if(void 0!==t.frameOffset&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==t.frameCount&&(!Number.isInteger(t.frameCount)||t.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const{format:i,frameCount:r,frameOffset:n}=t;let{planeIndex:s}=t,a=this.format;const o=null!=i?i:this.format;if(!o)throw new Error("Destination format not determined");const l=this.numberOfFrames,c=this.numberOfChannels,u=null!=n?n:0;if(u>=l)throw new RangeError("frameOffset out of range");const d=void 0!==r?r:l-u;if(d>l-u)throw new RangeError("frameCount out of range");const h=ho(o),f=fo(o);if(f&&s>=c)throw new RangeError("planeIndex out of range");if(!f&&0!==s)throw new RangeError("planeIndex out of range");const m=(f?d:d*c)*h;if(e.byteLength2&&o!==a)return void ko(this._data,p,a,o,c,s,u,d);try{return void this._data.copyTo(e,{planeIndex:s,frameOffset:u,frameCount:d,format:o})}catch(S){if("f32-planar"===o)throw S;a="f32-planar"}}const k=mo(a),y=ho(a),b=fo(a);let T;if(this._data instanceof co){const e=e=>{const t=this._data.getDataPlane(e);if(!(t instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");const i=l*y*(b?1:c);if(t.byteLength!==i)throw new TypeError(`Data plane ${e} has invalid size. Expected exactly ${i} bytes, got ${t.byteLength} bytes.`);return t};if(b)if(f)T=e(s),s=0;else{T=new Uint8Array(l*y*c);for(let t=0;tthis.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t0)for(let r=0;r0&&this.copyTo(n,{planeIndex:0,format:this.format,frameOffset:e,frameCount:i});return new uo({data:n,format:this.format,sampleRate:this.sampleRate,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp+e/this.sampleRate})}close(){this._closed||(null==Wa||Wa.unregister(this),this._data instanceof co?(this._data._referenceCount--,0===this._data._referenceCount&&this._data.close()):go(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof co?this._createAudioDataFromData():go(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(fo(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let i=0;i0;){const n=Math.min(s,o),l=new Float32Array(i*n);for(let t=0;t0;){const n=Math.min(s,o),c=new Float32Array(i*n);for(let t=0;t{switch(e){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},fo=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},mo=e=>{switch(e){case"u8":case"u8-planar":return(e,t)=>(e.getUint8(t)-128)/128;case"s16":case"s16-planar":return(e,t)=>e.getInt16(t,!0)/32768;case"s32":case"s32-planar":return(e,t)=>e.getInt32(t,!0)/2147483648;case"f32":case"f32-planar":return(e,t)=>e.getFloat32(t,!0)}},po=e=>{switch(e){case"u8":case"u8-planar":return(e,t,i)=>e.setUint8(t,Ie(127.5*(i+1),0,255));case"s16":case"s16-planar":return(e,t,i)=>e.setInt16(t,Ie(Math.round(32767*i),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,i)=>e.setInt32(t,Ie(Math.round(2147483647*i),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,i)=>e.setFloat32(t,i,!0)}},go=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,ko=(e,t,i,r,n,s,a,o)=>{const l=mo(i),c=po(r),u=ho(i),d=ho(r),h=fo(i);if(fo(r))if(h){const r=new ArrayBuffer(o*u),n=J(r);e.copyTo(r,{planeIndex:s,frameOffset:a,frameCount:o,format:i});for(let e=0;e{if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.metadataOnly&&"boolean"!==typeof e.metadataOnly)throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(void 0!==e.verifyKeyPackets&&"boolean"!==typeof e.verifyKeyPackets)throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(e.verifyKeyPackets&&e.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(void 0!==e.skipLiveWait&&"boolean"!==typeof e.skipLiveWait)throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},vo=e=>{if(!Je(e))throw new TypeError("timestamp must be a number.")},So=(e,t,i)=>i.verifyKeyPackets?t.then(t=>z(null,null,function*(){if(!t||"delta"===t.type)return t;const i=yield e.determinePacketType(t);return i&&(t.type=i),t})):t;class wo{constructor(e){if(!(e instanceof zo))throw new TypeError("track must be an InputTrack.");this._track=e}getFirstPacket(){return z(this,arguments,function*(e={}){if(To(e),this._track.input._disposed)throw new el;return So(this._track,this._track._backing.getFirstPacket(e),e)})}getFirstKeyPacket(){return z(this,arguments,function*(e={}){To(e);const t=yield this.getFirstPacket(e);return t?"key"===t.type?t:this.getNextKeyPacket(t,e):null})}getPacket(e){return z(this,arguments,function*(e,t={}){if(vo(e),To(t),this._track.input._disposed)throw new el;return So(this._track,this._track._backing.getPacket(e,t),t)})}getNextPacket(e){return z(this,arguments,function*(e,t={}){if(!(e instanceof nr))throw new TypeError("packet must be an EncodedPacket.");if(To(t),this._track.input._disposed)throw new el;return So(this._track,this._track._backing.getNextPacket(e,t),t)})}getKeyPacket(e){return z(this,arguments,function*(e,t={}){if(vo(e),To(t),this._track.input._disposed)throw new el;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const i=yield this._track._backing.getKeyPacket(e,t);if(!i)return i;j("key"===i.type);return"delta"===(yield this._track.determinePacketType(i))?this.getKeyPacket(i.timestamp-1/(yield this._track.getTimeResolution()),t):i})}getNextKeyPacket(e){return z(this,arguments,function*(e,t={}){if(!(e instanceof nr))throw new TypeError("packet must be an EncodedPacket.");if(To(t),this._track.input._disposed)throw new el;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const i=yield this._track._backing.getNextKeyPacket(e,t);if(!i)return i;j("key"===i.type);return"delta"===(yield this._track.determinePacketType(i))?this.getNextKeyPacket(i,t):i})}packets(e,t,i={}){if(void 0!==e&&!(e instanceof nr))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!(null==i?void 0:i.metadataOnly))throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof nr))throw new TypeError("endPacket must be an EncodedPacket.");if(To(i),this._track.input._disposed)throw new el;const r=[];let{promise:n,resolve:s}=ke(),{promise:a,resolve:o}=ke(),l=!1,c=!1,u=null,d=!1;const h=[],f=()=>Math.max(2,h.length);(()=>z(this,null,function*(){let u=null!=e?e:yield this.getFirstPacket(i);for(;u&&!c&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=(null==t?void 0:t.sequenceNumber));)r.length>f()?(({promise:a,resolve:o}=ke()),yield a):(r.push(u),s(),({promise:n,resolve:s}=ke()),u=yield this.getNextPacket(u,i));l=!0,s()}))().catch(e=>{d||(u=e,d=!0,s())});const m=this._track;return{next(){return z(this,null,function*(){for(;;){if(m.input._disposed)throw new el;if(c)return{value:void 0,done:!0};if(d)throw u;if(r.length>0){const e=r.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};yield n}})},return(){return z(this,null,function*(){return c=!0,o(),s(),{value:void 0,done:!0}})},throw(e){return z(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}class Po{constructor(e,t){this.onSample=e,this.onError=t}}class Io{mediaSamplesInRange(e=-1/0,t=1/0,i){vo(e),vo(t);const r=[];let n=!1,s=null,{promise:a,resolve:o}=ke(),{promise:l,resolve:c}=ke(),u=!1,d=!1,h=!1,f=null,m=null,p=!1;const g=R(_({},i),{verifyKeyPackets:!0,metadataOnly:!1});(()=>z(this,null,function*(){var i;f=yield this._createDecoder(i=>{c(),i.timestamp>=t&&(d=!0),d?i.close():(s&&(i.timestamp>e?(r.push(s),n=!0):s.close()),i.timestamp>=e&&(r.push(i),n=!0),s=n?null:i,r.length>0&&(o(),({promise:a,resolve:o}=ke())))},e=>{p||(m=e,p=!0,o())});const k=this._createPacketSink(),y=null!=(i=yield k.getKeyPacket(e,g))?i:yield k.getFirstKeyPacket(g);let b=y;const T=k.packets(null!=y?y:void 0,void 0,g);for(yield T.next();b&&!d&&!this._track.input._disposed;){const e=xo(r.length);if(r.length+f.getDecodeQueueSize()>e){({promise:l,resolve:c}=ke()),yield l;continue}f.decode(b);const t=yield T.next();if(t.done)break;b=t.value}yield T.return(),h||this._track.input._disposed||(yield f.flush()),!n&&s&&r.push(s),u=!0,o()}))().catch(e=>{p||(m=e,p=!0,o())}).finally(()=>{null==f||f.close()});const k=this._track,y=()=>{null==s||s.close();for(const e of r)e.close()};return{next(){return z(this,null,function*(){for(;;){if(k.input._disposed)throw h=!0,d=!0,y(),new el;if(h)return{value:void 0,done:!0};if(p)throw h=!0,d=!0,y(),m;if(r.length>0){const e=r.shift();return c(),{value:e,done:!1}}if(u)return{value:void 0,done:!0};yield a}})},return(){return z(this,null,function*(){return h=!0,d=!0,c(),o(),y(),{value:void 0,done:!0}})},throw(e){return z(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e,t){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const i=function(e){return U(this,null,function*(){Symbol.iterator in e?yield*q(e[Symbol.iterator]()):yield*q(e[Symbol.asyncIterator]())})}(e),r=[],n=[];let{promise:s,resolve:a}=ke(),{promise:o,resolve:l}=ke(),c=!1,u=!1,d=null,h=null,f=!1;const m=e=>{n.push(e),a(),({promise:s,resolve:a}=ke())},p=R(_({},t),{verifyKeyPackets:!0,metadataOnly:!1});(()=>z(this,null,function*(){d=yield this._createDecoder(e=>{if(l(),u)return void e.close();let t=0;for(;r.length>0&&e.timestamp-r[0]>-1e-10;)t++,r.shift();if(t>0)for(let i=0;i{f||(h=e,f=!0,a())});const e=this._createPacketSink();let t=null,s=null,g=-1;const k=()=>z(this,null,function*(){j(s),j(d);let t=s;for(d.decode(t);t.sequenceNumberi&&!u;)({promise:o,resolve:l}=ke()),yield o;if(u)break;const r=yield e.getNextPacket(t,p);j(r),d.decode(r),t=r}g=-1}),y=()=>z(this,null,function*(){j(d),yield d.flush();for(let e=0;e{f||(h=e,f=!0,a())}).finally(()=>{null==d||d.close()});const g=this._track,k=()=>{for(const e of n)null==e||e.close()};return{next(){return z(this,null,function*(){for(;;){if(g.input._disposed)throw u=!0,k(),new el;if(u)return{value:void 0,done:!0};if(f)throw u=!0,k(),h;if(n.length>0){const e=n.shift();return j(void 0!==e),l(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};yield s}})},return(){return z(this,null,function*(){return u=!0,l(),a(),k(),{value:void 0,done:!0}})},throw(e){return z(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}const xo=e=>0===e?40:8;class Co extends Po{constructor(e,t,i,r,n,s){var a,o,l,c,u,d,h,f;super(e,t),this.codec=i,this.decoderConfig=r,this.rotation=n,this.timeResolution=s,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ze,this.customDecoderQueueSize=0,this.inputTimestamps=[],this.sampleQueue=[],this.currentPacketIndex=0,this.raslSkipped=!1,this.alphaDecoder=null,this.alphaHadKeyframe=!1,this.colorQueue=[],this.alphaQueue=[],this.merger=null,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1,this.finalSamples=[],this.mergeAlphaPromises=[];const m=yo.find(e=>e.supports(i,r));if(m)this.customDecoder=new m,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof Ka))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();j(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if(Ve()){if("avc"===i&&this.decoderConfig.description){const e=Dt(Y(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const t=Nt(e.sequenceParameterSets[0]);t&&(0===t.frameMbsOnlyFlag&&(this.decoderConfig=R(_({},this.decoderConfig),{hardwareAcceleration:"prefer-software"})),0!==t.maxDecFrameBuffering&&1!==t.bitstreamRestrictionFlag&&(e.sequenceParameterSets[0]=zt(t),this.decoderConfig=R(_({},this.decoderConfig),{description:At(e)})))}}oe(this.decoderConfig.colorSpace)||(this.decoderConfig=R(_({},this.decoderConfig),{colorSpace:{primaries:null!=(o=null==(a=this.decoderConfig.colorSpace)?void 0:a.primaries)?o:"bt709",matrix:null!=(c=null==(l=this.decoderConfig.colorSpace)?void 0:l.matrix)?c:"bt709",transfer:null!=(d=null==(u=this.decoderConfig.colorSpace)?void 0:u.transfer)?d:"bt709",fullRange:null!=(f=null==(h=this.decoderConfig.colorSpace)?void 0:h.fullRange)&&f}}))}const t=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){var e,t;return this.customDecoder?this.customDecoderQueueSize:(j(this.decoder),Math.max(this.decoder.decodeQueueSize,null!=(t=null==(e=this.alphaDecoder)?void 0:e.decodeQueueSize)?t:0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--);else{if(j(this.decoder),Ue()||ge(this.inputTimestamps,e.timestamp,e=>e),Ve()&&0===this.currentPacketIndex)if("avc"===this.codec){const t=[];let i=!1;for(const n of xt(e.data,this.decoderConfig)){const r=Ct(e.data[n.offset]);if(i||(i=r>=1&&r<=5),r===Tt.AUD){if(i)break;t.length=0}r>=20&&r<=31||t.push(e.data.subarray(n.offset,n.offset+n.length))}if(!this.decoderConfig.description)for(let e=0;e{if(t.description){const i=3&Y(t.description)[4];return Rt(e,i+1)}return _t(e)})(t,this.decoderConfig);e=new nr(r,e.type,e.timestamp,e.duration)}else if("hevc"===this.codec){const t=Jt(e.data,this.decoderConfig);t&&(e=new nr(t,e.type,e.timestamp,e.duration))}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha)return void this.pushNullAlphaFrame();if(this.merger||(this.merger=new Eo),!this.alphaDecoder){const e=e=>{if(this.colorQueue.length>0){const t=this.colorQueue.shift();j(void 0!==t),this.mergeAlpha(t,e)}else this.alphaQueue.push(e);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){const e=this.colorQueue.shift();j(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(i){this.onError(i)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=ai(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(null!=t?t:e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(const t of Lt(e,this.decoderConfig)){const i=Ut(e[t.offset]);if(i===St.RASL_N||i===St.RASL_R)return!0}return!1}sampleHandler(e){if(Ue()){if(this.sampleQueue.length>0&&e.timestamp>=X(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}ge(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();j(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}mergeAlpha(e,t){return z(this,null,function*(){const i=ke();this.mergeAlphaPromises.push(i.promise);const r={sample:null};this.finalSamples.push(r);try{if(t){j(this.merger);const i=yield this.merger.merge(e,t);r.sample=new Ka(i)}else r.sample=new Ka(e);for(;this.finalSamples.length>0&&null!==this.finalSamples[0].sample;){const e=this.finalSamples.shift();this.sampleHandler(e.sample)}}catch(n){ye(this.finalSamples,r),this.onError(n)}finally{ye(this.mergeAlphaPromises,i.promise),i.resolve()}})}flush(){return z(this,null,function*(){var e;if(this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(j(this.decoder),yield Promise.all([this.decoder.flush(),null==(e=this.alphaDecoder)?void 0:e.flush()]),yield Promise.all(this.mergeAlphaPromises),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),Ue()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1})}close(){var e;this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(j(this.decoder),"closed"!==this.decoder.state&&this.decoder.close(),this.alphaDecoder&&"closed"!==this.alphaDecoder.state&&this.alphaDecoder.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,null==(e=this.merger)||e.close());for(const t of this.sampleQueue)t.close();this.sampleQueue.length=0}}let Bo=null;class Eo{constructor(){this.workers=[],this.nextWorkerIndex=0,this.pendingRequests=new Map,this.nextRequestId=0}merge(e,t){if(0===this.workers.length){if(!Bo){const e=new Blob([`(${_o.toString()})()`],{type:"application/javascript"});Bo=URL.createObjectURL(e)}const e=Ie(navigator.hardwareConcurrency,1,4);for(let t=0;t{const t=e.data,i=this.pendingRequests.get(t.id);i&&(this.pendingRequests.delete(t.id),"error"in t?i.reject(new Error(t.error)):i.resolve(t.frame))}),e.addEventListener("error",e=>{const t=new Error(e.message||"Color/alpha merge worker error.");for(const i of this.pendingRequests.values())i.reject(t);this.pendingRequests.clear()}),this.workers.push(e)}}const i=this.nextRequestId++,r=ke();this.pendingRequests.set(i,r);const n=this.workers[this.nextWorkerIndex];return this.nextWorkerIndex=(this.nextWorkerIndex+1)%this.workers.length,n.postMessage({id:i,color:e,alpha:t},{transfer:[e,t]}),r.promise}close(){for(const t of this.workers)t.terminate();this.workers.length=0;const e=new Error("Color/alpha merger closed.");for(const t of this.pendingRequests.values())t.reject(e);this.pendingRequests.clear()}}const _o=()=>{let e=null,t=null,i=Promise.resolve();self.addEventListener("message",e=>{const{id:t,color:n,alpha:s}=e.data;i=i.then(()=>z(null,null,function*(){try{const e=yield r(n,s);self.postMessage({id:t,frame:e},{transfer:[e]})}catch(e){self.postMessage({id:t,error:e.message})}finally{n.close(),s.close()}}))});const r=(e,t)=>z(null,null,function*(){const i=e.format,r=t.format;if(!i||!r)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");const o=i.includes("P10"),l=i.includes("P12"),c=r.includes("P10"),u=r.includes("P12");if(c!==o||u!==l)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${i}', alpha: '${r}').`);if("RGBX"===i||"RGBA"===i||"BGRX"===i||"BGRA"===i)return yield n(e,t,i);if("I420"===i||"I420P10"===i||"I420P12"===i||"I422"===i||"I422P10"===i||"I422P12"===i||"I444"===i||"I444P10"===i||"I444P12"===i)return yield s(e,t,i);if("NV12"===i)return yield a(e,t);throw new Error(`CPU color/alpha merging does not support format '${i}'.`)}),n=(e,t,i)=>z(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=c*u,h=new Uint8Array(4*d);yield e.copyTo(h);const f=yield o(t,c,u,1);for(let e=0,t=3;ez(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=i.includes("P10"),h=i.includes("P12"),f=d||h?2:1;let m,p;i.startsWith("I420")?(m=Math.ceil(c/2),p=Math.ceil(u/2)):i.startsWith("I422")?(m=Math.ceil(c/2),p=u):(m=c,p=u);const g=c*u,k=g*f,y=m*p*f,b=new Uint8Array(k+2*y+g*f);yield e.copyTo(b);const T=yield o(t,c,u,f),v=k+2*y;b.set(T,v);const S={format:i.slice(0,4)+"A"+i.slice(4),codedWidth:c,codedHeight:u,timestamp:e.timestamp,duration:null!=(l=e.duration)?l:void 0,transfer:[b.buffer]};return new VideoFrame(b,S)}),a=(e,i)=>z(null,null,function*(){var r,n,s,a,l;const c=null!=(n=null==(r=e.visibleRect)?void 0:r.width)?n:e.codedWidth,u=null!=(a=null==(s=e.visibleRect)?void 0:s.height)?a:e.codedHeight,d=c*u,h=Math.ceil(c/2)*Math.ceil(u/2),f=e.allocationSize();t&&t.byteLength===f||(t=new Uint8Array(f)),yield e.copyTo(t);const m=new Uint8Array(d+2*h+d);m.set(t.subarray(0,d),0);const p=d,g=d+h,k=d;for(let e=0;ez(null,null,function*(){const s=t.allocationSize();e&&e.byteLength===s||(e=new Uint8Array(s)),yield t.copyTo(e);const a=t.format;if("RGBA"===a||"BGRA"===a||"RGBX"===a||"BGRX"===a){const t="RGBA"===a||"RGBX"===a?0:2,n=i*r;for(let i=0;i{if(!e||"object"!==typeof e)throw new TypeError("decoderOptions must be an object.");if(void 0!==e.hardwareAcceleration&&!["no-preference","prefer-hardware","prefer-software"].includes(e.hardwareAcceleration))throw new TypeError("decoderOptions.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(void 0!==e.optimizeForLatency&&"boolean"!==typeof e.optimizeForLatency)throw new TypeError("decoderOptions.optimizeForLatency, when provided, must be a boolean.")};class Fo extends Io{constructor(e,t={}){if(!(e instanceof qo))throw new TypeError("videoTrack must be an InputVideoTrack.");Ro(t),super(),this._track=e,this._decoderOptions=t}_createDecoder(e,t){return z(this,null,function*(){if(!(yield this._track.canDecode())){if("undefined"===typeof VideoDecoder)throw new Error(je("VideoDecoder"));throw new Error("This video track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=yield this._track.getCodec(),r=yield this._track.getRotation();let n=yield this._track.getDecoderConfig();const s=yield this._track.getTimeResolution();return j(i&&n),n=R(_({},n),{hardwareAcceleration:this._decoderOptions.hardwareAcceleration,optimizeForLatency:this._decoderOptions.optimizeForLatency}),new Co(e,t,i,n,r,s)})}_createPacketSink(){return new wo(this._track)}getSample(e){return z(this,arguments,function*(e,t={}){vo(e);try{for(var i,r,n,s=W(this.mediaSamplesAtTimestamps([e],t));i=!(r=yield s.next()).done;i=!1){return r.value}}catch(r){n=[r]}finally{try{i&&(r=s.return)&&(yield r.call(s))}finally{if(n)throw n[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class Ao{constructor(e,t={}){var i,r,n;if(this._rotation=0,this._initPromise=null,this._nextCanvasIndex=0,!(e instanceof qo))throw new TypeError("videoTrack must be an InputVideoTrack.");if(t&&"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.alpha&&"boolean"!==typeof t.alpha)throw new TypeError("options.alpha, when provided, must be a boolean.");if(void 0!==t.width&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(void 0!==t.height&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(void 0!==t.fit&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(void 0!==t.width&&void 0!==t.height&&void 0===t.fit)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(void 0!==t.crop&&eo(t.crop,"options."),void 0!==t.poolSize&&("number"!==typeof t.poolSize||!Number.isInteger(t.poolSize)||t.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");void 0!==t.decoderOptions&&Ro(t.decoderOptions),this._videoTrack=e,this._alpha=null!=(i=t.alpha)&&i,this._options=t,this._fit=null!=(r=t.fit)?r:"fill",this._videoSampleSink=new Fo(e,t.decoderOptions),this._canvasPool=Array.from({length:null!=(n=t.poolSize)?n:0},()=>null)}_ensureInit(){var e;return null!=(e=this._initPromise)?e:this._initPromise=(()=>z(this,null,function*(){var e;const t=this._options,i=this._videoTrack,r=null!=(e=t.rotation)?e:yield i.getRotation(),n=yield i.getSquarePixelWidth(),s=yield i.getSquarePixelHeight(),[a,o]=r%180===0?[n,s]:[s,n];let l=t.crop;l&&(l=Za(l,a,o));let[c,u]=l?[l.width,l.height]:[a,o];const d=c/u;void 0!==t.width&&void 0===t.height?(c=t.width,u=Math.round(c/d)):void 0===t.width&&void 0!==t.height?(u=t.height,c=Math.round(u*d)):void 0!==t.width&&void 0!==t.height&&(c=t.width,u=t.height),this._width=c,this._height=u,this._rotation=r,this._crop=l}))()}_videoSampleToWrappedCanvas(e){const t=this._width,i=this._height;let r=this._canvasPool[this._nextCanvasIndex],n=!1;r||("undefined"!==typeof document?(r=document.createElement("canvas"),r.width=t,r.height=i):r=new OffscreenCanvas(t,i),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=r),n=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const s=r.getContext("2d",{alpha:this._alpha||We()});j(s),e._drawWithFitAndMipmapping(r,s,{fit:this._fit,rotation:this._rotation,crop:this._crop,targetIsFresh:n,fillBlack:!this._alpha&&We()});const a={canvas:r,timestamp:e.timestamp,duration:e.duration};return e.close(),a}getCanvas(e,t){return z(this,null,function*(){vo(e),yield this._ensureInit();const i=yield this._videoSampleSink.getSample(e,t);return i&&this._videoSampleToWrappedCanvas(i)})}canvases(e,t,i){return U(this,null,function*(){yield new L(this._ensureInit()),yield*q(Pe(this._videoSampleSink.samples(e,t,i),e=>this._videoSampleToWrappedCanvas(e)))})}canvasesAtTimestamps(e,t){return U(this,null,function*(){yield new L(this._ensureInit()),yield*q(Pe(this._videoSampleSink.samplesAtTimestamps(e,t),e=>e&&this._videoSampleToWrappedCanvas(e)))})}}class Do extends Po{constructor(e,t,i,r){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new ze,this.customDecoderQueueSize=0,this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0;const n=t=>{let i=t.timestamp;null!==this.expectedFirstTimestamp&&null===this.currentTimestamp&&(this.timestampOffset=this.expectedFirstTimestamp-i),i+=this.timestampOffset,(null===this.currentTimestamp||Math.abs(i-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=i);const n=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const s=r.sampleRate;t.setTimestamp(Math.round(n*s)/s),e(t)},s=bo.find(e=>e.supports(i,r));if(s)this.customDecoder=new s,this.customDecoder.codec=i,this.customDecoder.config=r,this.customDecoder.onSample=e=>{if(!(e instanceof uo))throw new TypeError("The argument passed to onSample must be an AudioSample.");n(e)},this.customDecoder.onError=e=>{t(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init()).catch(e=>t(e));else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{n(new uo(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(r)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(j(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).catch(e=>this.onError(e)).finally(()=>this.customDecoderQueueSize--)):(j(this.decoder),null!=this.expectedFirstTimestamp||(this.expectedFirstTimestamp=e.timestamp),this.decoder.decode(e.toEncodedAudioChunk()))}flush(){return z(this,null,function*(){this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(j(this.decoder),yield this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0})}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(j(this.decoder),"closed"!==this.decoder.state&&this.decoder.close())}}class Mo extends Po{constructor(e,t,i){super(e,t),this.decoderConfig=i,this.currentTimestamp=null,j(Ri.includes(i.codec)),this.codec=i.codec;const{dataType:r,sampleSize:n,littleEndian:s}=Vi(this.codec);switch(this.inputSampleSize=n,n){case 1:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint8(t)-B(2,7):"signed"===r?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===r?this.readInputValue=(e,t)=>(e=>{let t=0,i=0,r=~e;128&r&&(r&=-129,t=-1),i=5+((240&r)>>4);const n=(1<(e=>{let t=0,i=0,r=85^e;128&r&&(r&=-129,t=-1),i=4+((240&r)>>4);let n=0;return n=4!==i?1<e.getUint16(t,s)-B(2,15):"signed"===r?this.readInputValue=(e,t)=>e.getInt16(t,s):j(!1);break;case 3:"unsigned"===r?this.readInputValue=(e,t)=>Se(e,t,s)-B(2,23):"signed"===r?this.readInputValue=(e,t)=>((e,t,i)=>Se(e,t,i)<<8>>8)(e,t,s):j(!1);break;case 4:"unsigned"===r?this.readInputValue=(e,t)=>e.getUint32(t,s)-B(2,31):"signed"===r?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===r?this.readInputValue=(e,t)=>e.getFloat32(t,s):j(!1);break;case 8:"float"===r?this.readInputValue=(e,t)=>e.getFloat64(t,s):j(!1);break;default:ve(n),j(!1)}switch(n){case 1:"ulaw"===r||"alaw"===r?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,i)=>e.setUint8(t,i+B(2,7)));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,i)=>e.setInt16(t,i,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i<<8,!0);break;case 4:this.outputSampleSize=4,"float"===r?(this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,i)=>e.setInt32(t,i,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,i)=>e.setFloat32(t,i,!0);break;default:ve(n),j(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=J(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,r=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,n=new ArrayBuffer(r),s=new DataView(n);for(let c=0;c=a)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=a;const l=new uo({format:this.outputFormat,data:n,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:o});this.onSample(l)}flush(){return z(this,null,function*(){})}close(){}}class No extends Io{constructor(e){if(!(e instanceof Wo))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}_createDecoder(e,t){return z(this,null,function*(){if(!(yield this._track.canDecode())){if("undefined"===typeof AudioDecoder)throw new Error(je("AudioDecoder"));throw new Error("This audio track cannot be decoded in this environment. Make sure to check decodability before using a track.")}const i=yield this._track.getCodec(),r=yield this._track.getDecoderConfig();return j(i&&r),Ri.includes(r.codec)?new Mo(e,t,r):new Do(e,t,i,r)})}_createPacketSink(){return new wo(this._track)}getSample(e){return z(this,arguments,function*(e,t={}){vo(e);try{for(var i,r,n,s=W(this.mediaSamplesAtTimestamps([e],t));i=!(r=yield s.next()).done;i=!1){return r.value}}catch(r){n=[r]}finally{try{i&&(r=s.return)&&(yield r.call(s))}finally{if(n)throw n[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e,t,i={}){return this.mediaSamplesInRange(e,t,i)}samplesAtTimestamps(e,t={}){return this.mediaSamplesAtTimestamps(e,t)}}class Oo{constructor(e){if(!(e instanceof Wo))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new No(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}getBuffer(e,t){return z(this,null,function*(){vo(e);const i=yield this._audioSampleSink.getSample(e,t);return i&&this._audioSampleToWrappedArrayBuffer(i)})}buffers(e,t,i){return Pe(this._audioSampleSink.samples(e,t,i),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e,t){return Pe(this._audioSampleSink.samplesAtTimestamps(e,t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class zo{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof qo}isAudioTrack(){return this instanceof Wo}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}getInternalCodecId(){return z(this,null,function*(){return this._backing.getInternalCodecId()})}get internalCodecId(){return Lo(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}getLanguageCode(){return z(this,null,function*(){return this._backing.getLanguageCode()})}get languageCode(){return Lo(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}getName(){return z(this,null,function*(){return this._backing.getName()})}get name(){return Lo(this._backing.getName(),"name","getName")}getTimeResolution(){return z(this,null,function*(){return this._backing.getTimeResolution()})}get timeResolution(){return Lo(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}isRelativeToUnixEpoch(){return z(this,null,function*(){return this._backing.isRelativeToUnixEpoch()})}getUnixTimeForTimestamp(e){return z(this,null,function*(){return this._backing.getUnixTimeForTimestamp(e)})}hasUnixTimeMapping(){return z(this,null,function*(){return null!==(yield this._backing.getUnixTimeForTimestamp(yield this.getFirstTimestamp()))})}getDisposition(){return z(this,null,function*(){return this._backing.getDisposition()})}get disposition(){return Lo(this._backing.getDisposition(),"disposition","getDisposition")}getBitrate(){return z(this,null,function*(){return this._backing.getBitrate()})}getAverageBitrate(){return z(this,null,function*(){return this._backing.getAverageBitrate()})}getFirstTimestamp(){return z(this,null,function*(){var e;const t=yield this._backing.getFirstPacket({metadataOnly:!0});return null!=(e=null==t?void 0:t.timestamp)?e:0})}computeDuration(e){return z(this,null,function*(){var t,i;const r=yield this._backing.getPacket(1/0,_({metadataOnly:!0},e)),n=(null!=(t=null==r?void 0:r.timestamp)?t:0)+(null!=(i=null==r?void 0:r.duration)?i:0);return Ee(n,yield this.getTimeResolution())})}getDurationFromMetadata(){return z(this,arguments,function*(e={}){return this._backing.getDurationFromMetadata(e)})}computePacketStats(e=1/0,t){return z(this,null,function*(){const i=new wo(this);let r=1/0,n=-1/0,s=0,a=0;try{for(var o,l,c,u=W(i.packets(void 0,void 0,_({metadataOnly:!0},t)));o=!(l=yield u.next()).done;o=!1){const t=l.value;if(s>=e&&t.timestamp>=n)break;r=Math.min(r,t.timestamp),n=Math.max(n,t.timestamp+t.duration),s++,a+=t.byteLength}}catch(l){c=[l]}finally{try{o&&(l=u.return)&&(yield l.call(u))}finally{if(c)throw c[0]}}return{packetCount:s,averagePacketRate:s?Number((s/(n-r)).toPrecision(16)):0,averageBitrate:s?Number((8*a/(n-r)).toPrecision(16)):0}})}isLive(){return z(this,null,function*(){return null!==(yield this._backing.getLiveRefreshInterval())})}getLiveRefreshInterval(){return z(this,null,function*(){return this._backing.getLiveRefreshInterval()})}canBePairedWith(e){if(!(e instanceof zo))throw new TypeError("other must be an InputTrack.");return this.input===e.input&&this!==e&&(this._backing.getPairingMask()&e._backing.getPairingMask())!==BigInt("0")}getPairableTracks(e){return z(this,null,function*(){return this.input.getTracks(Ko({filter:e=>e.canBePairedWith(this)},e))})}getPairableVideoTracks(e){return z(this,null,function*(){return this.input.getVideoTracks(Ko({filter:e=>e.canBePairedWith(this)},e))})}getPairableAudioTracks(e){return z(this,null,function*(){return this.input.getAudioTracks(Ko({filter:e=>e.canBePairedWith(this)},e))})}getPrimaryPairableVideoTrack(e){return z(this,null,function*(){return this.input.getPrimaryVideoTrack(Ko({filter:e=>e.canBePairedWith(this)},e))})}getPrimaryPairableAudioTrack(e){return z(this,null,function*(){return this.input.getPrimaryAudioTrack(Ko({filter:e=>e.canBePairedWith(this)},e))})}hasPairableTrack(e){return z(this,null,function*(){e&&(e=Uo(e));const t=yield this.input.getTracks();for(const i of t)if(this.canBePairedWith(i)&&(!e||(yield e(i))))return!0;return!1})}hasPairableVideoTrack(e){return e&&(e=Uo(e)),this.hasPairableTrack(t=>z(this,null,function*(){return t.isVideoTrack()&&(!e||(yield e(t)))}))}hasPairableAudioTrack(e){return e&&(e=Uo(e)),this.hasPairableTrack(t=>z(this,null,function*(){return t.isAudioTrack()&&(!e||(yield e(t)))}))}}const Lo=(e,t,i)=>{if(Xe(e))throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${i}()' instead.`);return e},Uo=e=>{if(void 0!==e&&"function"!==typeof e)throw new TypeError("predicate, when provided, must be a function.");return e?t=>{const i=e=>{if("boolean"!==typeof e)throw new TypeError("predicate must return or resolve to a boolean value.");return e},r=e(t);return Xe(r)?r.then(i):i(r)}:void 0};class qo extends zo{constructor(e,t){super(e,t),this._pixelAspectRatioCache=null,this._backing=t}get type(){return"video"}getCodec(){return z(this,null,function*(){return this._backing.getCodec()})}get codec(){return Lo(this._backing.getCodec(),"codec","getCodec")}hasOnlyKeyPackets(){return z(this,null,function*(){var e,t,i;return null!=(i=yield null==(t=(e=this._backing).getHasOnlyKeyPackets)?void 0:t.call(e))?i:"prores"===(yield this._backing.getCodec())})}getCodedWidth(){return z(this,null,function*(){return this._backing.getCodedWidth()})}get codedWidth(){return Lo(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}getCodedHeight(){return z(this,null,function*(){return this._backing.getCodedHeight()})}get codedHeight(){return Lo(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}getRotation(){return z(this,null,function*(){return this._backing.getRotation()})}get rotation(){return Lo(this._backing.getRotation(),"rotation","getRotation")}getSquarePixelWidth(){return z(this,null,function*(){return this._backing.getSquarePixelWidth()})}get squarePixelWidth(){return Lo(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}getSquarePixelHeight(){return z(this,null,function*(){return this._backing.getSquarePixelHeight()})}get squarePixelHeight(){return Lo(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}getPixelAspectRatio(){return z(this,null,function*(){var e;return null!=(e=this._pixelAspectRatioCache)?e:this._pixelAspectRatioCache=it({num:(yield this.getSquarePixelWidth())*(yield this.getCodedHeight()),den:(yield this.getSquarePixelHeight())*(yield this.getCodedWidth())})})}get pixelAspectRatio(){var e;return null!=(e=this._pixelAspectRatioCache)?e:this._pixelAspectRatioCache=it({num:Lo(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*Lo(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:Lo(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*Lo(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")})}getDisplayWidth(){return z(this,null,function*(){var e,t;const i=yield null==(t=(e=this._backing).getMetadataDisplayWidth)?void 0:t.call(e);if(null!=i)return i;return(yield this.getRotation())%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight()})}get displayWidth(){var e,t;const i=null==(t=(e=this._backing).getMetadataDisplayWidth)?void 0:t.call(e);if(void 0!==i){const e=Lo(i,"displayWidth","getDisplayWidth");if(null!==e)return e}const r=Lo(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return Lo(r,"displayWidth","getDisplayWidth")}getDisplayHeight(){return z(this,null,function*(){var e,t;const i=yield null==(t=(e=this._backing).getMetadataDisplayHeight)?void 0:t.call(e);if(null!=i)return i;return(yield this.getRotation())%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth()})}get displayHeight(){var e,t;const i=null==(t=(e=this._backing).getMetadataDisplayHeight)?void 0:t.call(e);if(void 0!==i){const e=Lo(i,"displayHeight","getDisplayHeight");if(null!==e)return e}const r=Lo(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return Lo(r,"displayHeight","getDisplayHeight")}getColorSpace(){return z(this,null,function*(){return this._backing.getColorSpace()})}hasHighDynamicRange(){return z(this,null,function*(){const e=yield this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pq"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix})}canBeTransparent(){return z(this,null,function*(){return this._backing.canBeTransparent()})}getDecoderConfig(){return z(this,null,function*(){return this._backing.getDecoderConfig()})}getCodecParameterString(){return z(this,null,function*(){var e,t,i;const r=yield null==(t=(e=this._backing).getMetadataCodecParameterString)?void 0:t.call(e);if(null!=r)return r;const n=yield this._backing.getDecoderConfig();return null!=(i=null==n?void 0:n.codec)?i:null})}canDecode(){return z(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=yield this._backing.getCodec();if(j(null!==t),yo.some(i=>i.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(yield VideoDecoder.isConfigSupported(e)).supported}catch(e){return lt._error("Error during decodability check:",e),!1}})}determinePacketType(e){return z(this,null,function*(){if(!(e instanceof nr))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");const t=yield this.getCodec();if(null===t)return null;const i=yield this.getDecoderConfig();return j(i),ai(t,i,e.data)})}computeFrameRateMetrics(){return z(this,arguments,function*(e={}){var t,i;if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(void 0!==e.targetPacketCount&&(!Je(e.targetPacketCount)||e.targetPacketCount<0))throw new TypeError("options.targetPacketCount must be a non-negative number.");const r=yield this.getTimeResolution(),n=null!=(t=e.targetPacketCount)?t:256,s=new wo(this),a=[];let o=-1/0,l=0;try{for(var c,u,d,h=W(s.packets(void 0,void 0,{metadataOnly:!0}));c=!(u=yield h.next()).done;c=!1){const e=u.value;if(a.length>=n&&e.timestamp>=o)break;a.push(e.timestamp),o=Math.max(o,e.timestamp),l++}}catch(u){d=[u]}finally{try{c&&(u=h.return)&&(yield u.call(h))}finally{if(d)throw d[0]}}const f=new Float64Array(a.length);for(let R=0;Re-t),I=w-1>>1,x=w>>1;let C=0,B=0,E=0;for(const R of P)if(E+=b.get(R),0===C&&E>I&&(C=R),E>x){B=R;break}const _=(k/C+k/B)/2;return{underlyingFrameRate:g,bestGuessFrameRate:null!==g?g:Qo(_),minFrameRate:k/v,maxFrameRate:k/T,averageFrameRate:k*w/S,medianFrameRate:_,frameRateIsConstant:null!==g&&1===T&&1===v,probedPacketCount:l}})}}class Wo extends zo{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}getCodec(){return z(this,null,function*(){return this._backing.getCodec()})}get codec(){return Lo(this._backing.getCodec(),"codec","getCodec")}hasOnlyKeyPackets(){return z(this,null,function*(){var e,t,i;return null==(i=yield null==(t=(e=this._backing).getHasOnlyKeyPackets)?void 0:t.call(e))||i})}getNumberOfChannels(){return z(this,null,function*(){return this._backing.getNumberOfChannels()})}get numberOfChannels(){return Lo(this._backing.getNumberOfChannels(),"numberOfChannels","getNumberOfChannels")}getSampleRate(){return z(this,null,function*(){return this._backing.getSampleRate()})}get sampleRate(){return Lo(this._backing.getSampleRate(),"sampleRate","getSampleRate")}getDecoderConfig(){return z(this,null,function*(){return this._backing.getDecoderConfig()})}getCodecParameterString(){return z(this,null,function*(){var e,t,i;const r=yield null==(t=(e=this._backing).getMetadataCodecParameterString)?void 0:t.call(e);if(null!=r)return r;const n=yield this._backing.getDecoderConfig();return null!=(i=null==n?void 0:n.codec)?i:null})}canDecode(){return z(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=yield this._backing.getCodec();if(j(null!==t),bo.some(i=>i.supports(t,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof 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t?(i=ul(e,!0),r=ul(e,!0)):(r=ul(e,!1),i=ul(e,!1)),4294967296*r+i},pl=e=>4294967296*dl(e)+dl(e),gl=e=>4294967296*fl(e)+dl(e),kl=e=>{const t=hl(e),i=(e=>{rl(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*i+t},yl=e=>{rl(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},bl=e=>{rl(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},Tl=(e,t)=>{rl(e,t);let i="";for(let r=0;rZ.decode(nl(e,t)).split("\n").map(e=>e.trim()).filter(e=>{var t;return e.length>0&&!(null==(t=null==i?void 0:i.ignore)?void 0:t.call(i,e))});var Sl,wl,Pl,Il;(wl=Sl||(Sl={}))[wl.Unsynchronisation=128]="Unsynchronisation",wl[wl.ExtendedHeader=64]="ExtendedHeader",wl[wl.ExperimentalIndicator=32]="ExperimentalIndicator",wl[wl.Footer=16]="Footer",(Il=Pl||(Pl={}))[Il.ISO_8859_1=0]="ISO_8859_1",Il[Il.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",Il[Il.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",Il[Il.UTF_8=3]="UTF_8";const xl=128,Cl=10,Bl=["Blues","Classic 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t=()=>this.current(e,"playing")&&this.wanted;try{for(;this.seeking;)if(yield this.seeking.complete.promise,!t())return;if(!t())return;if(this.host.paused=!1,yield this.startAudio(),!t())return void(this.wanted&&!this.host.destroyed||this.host.audio.pause());this.host.video.start(this.host.audio),Ul(this.host.events,t,["play","playing"])}catch(i){if(!t())return;this.wanted=!1,this.host.paused=!0;try{this.stopEngines()}catch(r){console.warn("MediaBunny play cleanup error:",r)}throw i}finally{this.playing===e&&(this.playing=null)}})}seek(e,t){return this.position(t=>z(this,null,function*(){const i=this.host.audio.seek(e),r=t()?this.host.video.seek(e):Promise.resolve();yield Promise.all([i,r])}),["seeked"],!1,t)}replace(e,t){return this.position(i=>z(this,null,function*(){e.duration=yield ql(e),i()&&(this.host.media=e,yield Promise.all([this.host.video.load(e),this.host.audio.load(e)]),i()&&(yield 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t=requestAnimationFrame(()=>{if(this.scheduled===t&&this.current(e)){this.scheduled=null;try{this.render()}catch(i){this.stop(),this.report(i)}}});this.scheduled=t,this.host.rafId=t}render(){const e=this.host.asyncId,t=()=>this.current(e);if(!t()||!this.host.audioClock)return;const i=this.host.audioClock.currentTime,r=Date.now();if(r-this.host.lastTimeUpdate>=this.host.timeupdateInterval){if(this.host.events.emit("timeupdate"),!t())return;this.host.lastTimeUpdate=r}if(this.ready()){if(Number.isFinite(this.host.duration)&&i>=this.host.duration){this.stop(),this.host.stalled=!1;const e=this.host.asyncId;return void Ul(this.host.events,()=>!this.closed&&this.host.asyncId===e,["ended","pause","canplay"])}if(this.host.nextFrame&&this.host.nextFrame.timestamp<=i){if(this.draw(this.host.nextFrame),this.host.nextFrame=null,this.request(e),this.host.stalled){if(Ul(this.host.events,t,["canplay","playing"]),!t())return;this.host.stalled=!1}}else this.host.nextFrame||(this.request(e),Number.isFinite(this.host.duration)&&i!A(this,o),e=>N(this,d,g).call(this,e,!0),e=>N(this,d,m).call(this,e)))}preflight(e,t,i){return z(this,null,function*(){return function(e,t,i,r,n=()=>!0){return z(this,null,function*(){if((null==r?void 0:r.aborted)||!n())return!1;if(!t||"string"!==typeof e||Ol(e))return!0;try{const t=yield fetch(e,r?{method:"HEAD",signal:r}:{method:"HEAD"});if((null==r?void 0:r.aborted)||!n())return!1;const s=t.headers.get("accept-ranges");return!(!s||"none"===s)||(i.emit("error",new Event("RangeNotSupported")),!1)}catch(s){return!((null==r?void 0:r.aborted)||!n())&&(console.warn("Preflight check failed:",s),!0)}})}(e,this.preflightRange,this.events,t,i)})}drawPoster(){if(A(this,a)||!this.poster||this.posterDrawn)return;const e=A(this,t);A(this,l).draw(this.poster,()=>N(this,d,h).call(this,e),e=>{this.clear(),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,N(this,d,f).call(this).drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e=>N(this,d,m).call(this,e))}stopIterator(){return z(this,null,function*(){const e=this.videoIterator;this.videoIterator=null,this.nextFrame=null,yield function(e){if(!e)return Promise.resolve();const t=Vl.get(e);if(t)return t;const i=Promise.resolve().then(()=>e.return()).then(()=>{});return Vl.set(e,i),i}(e)})}clear(){N(this,d,f).call(this).clearRect(0,0,this.canvas.width,this.canvas.height)}cancelPending(){O(this,t)._++,O(this,i)._++,this.stop(),N(this,d,p).call(this),A(this,l).cancel(),M(this,o,!1),M(this,r,null),M(this,n,null),M(this,s,null),this.videoSink=null,this.input=null}load(e,n){return z(this,null,function*(){if(A(this,a))return;this.cancelPending();const s=A(this,t),l=A(this,i);M(this,o,!0);const c=Promise.resolve().then(()=>N(this,d,k).call(this,e,s,l,n));M(this,r,c);try{yield c}finally{A(this,r)===c&&M(this,r,null)}})}handleNoVideoTrack(){A(this,a)||(this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster())}resetIterator(e){return z(this,null,function*(){if(A(this,a))return;const n=A(this,t),s=++O(this,i)._,c=A(this,r);this.stop(),A(this,l).cancel(),M(this,o,!0);try{c&&(yield c),yield N(this,d,y).call(this,e,n,s)}catch(u){if(N(this,d,h).call(this,n)&&A(this,i)===s)throw N(this,d,p).call(this),u}finally{N(this,d,h).call(this,n)&&A(this,i)===s&&M(this,o,!1)}})}updateNextFrame(e){return z(this,null,function*(){yield A(this,c).update(e)})}render(){A(this,c).render()}start(e){A(this,c).start(e)}stop(){A(this,c).stop()}seek(e){return z(this,null,function*(){yield this.resetIterator(e)})}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){A(this,a)||(M(this,a,!0),O(this,t)._++,A(this,c).destroy(),A(this,l).cancel(),N(this,d,p).call(this),this.posterDrawn=!1,M(this,n,null),M(this,s,null),this.videoSink=null,this.input=null,this.audioClock=null)}}t=new WeakMap,i=new WeakMap,r=new WeakMap,n=new WeakMap,s=new WeakMap,a=new WeakMap,o=new WeakMap,l=new WeakMap,c=new WeakMap,u=new WeakMap,d=new WeakSet,h=function(e){return!A(this,a)&&A(this,t)===e},f=function(){if(!this.ctx)throw new Error("Canvas 2D context is unavailable.");return this.ctx},m=function(e){A(this,a)||(N(this,d,p).call(this),A(this,u)?A(this,u).call(this,e):this.events.emit("error",e))},p=function(){this.stopIterator().catch(e=>console.warn("MediaBunny iterator cleanup error:",e))},g=function(e,t){A(this,l).cancel(),t&&this.clear(),N(this,d,f).call(this).drawImage(e.canvas,0,0)},k=function(e,t,r,s){return z(this,null,function*(){if(N(this,d,h).call(this,t))try{this.clear(),this.posterDrawn=!1;const{input:i,videoTrack:a,duration:o}=e;if(this.input=i,this.duration=o,!a)return this.handleNoVideoTrack(),void(null==s||s());const l=null!==a.codec&&(yield a.canDecode());if(!N(this,d,h).call(this,t))return;if(!l)return this.handleNoVideoTrack(),void(null==s||s());const c=yield a.canBeTransparent();if(!N(this,d,h).call(this,t))return;M(this,n,()=>new Ao(a,{poolSize:2,fit:"contain",alpha:c})),this.videoSink=A(this,n).call(this),this.width=a.displayWidth,this.height=a.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,null==s||s(),N(this,d,h).call(this,t)&&(yield N(this,d,y).call(this,0,t,r))}catch(a){if(N(this,d,h).call(this,t))throw N(this,d,p).call(this),a}finally{N(this,d,h).call(this,t)&&A(this,i)===r&&M(this,o,!1)}})},y=function(e,t,r){return z(this,null,function*(){if(!N(this,d,h).call(this,t)||A(this,i)!==r)return;N(this,d,p).call(this),A(this,n)&&this.videoSink===A(this,s)&&(this.videoSink=A(this,n).call(this));const a=this.videoSink;if(!a||!N(this,d,h).call(this,t))return;M(this,s,a);const o=a.canvases(e);this.videoIterator=o;const l=()=>N(this,d,h).call(this,t)&&A(this,i)===r&&this.videoIterator===o,c=yield Kl(o);if(!l())return;const u=yield Kl(o);l()&&(this.nextFrame=u,c?N(this,d,g).call(this,c,!1):this.drawPoster())})};class Yl{constructor({canvas:e,ctx:t,events:i,option:r={}}){var n,s,a,o,l;D(this,b),this.events=i,this.option=r,this.audio=new Dl(i),this.video=new Ql({canvas:e,ctx:t,events:i,timeupdateInterval:null!=(n=r.timeupdateInterval)?n:250,avSyncTolerance:null!=(s=r.avSyncTolerance)?s:.12,dropLateFrames:null!=(a=r.dropLateFrames)&&a,poster:null!=(o=r.poster)?o:"",preflightRange:null!=(l=r.preflightRange)&&l,onError:e=>{try{this.pause()}catch(t){console.warn("MediaBunny video failure cleanup:",t)}this.reportError(e)}}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,this.input=null,this.media=null,this.loadSession=null,this.destroyed=!1,M(this,b,new Hl(this)),i.addEventListener("ended",()=>{this.destroyed||(this.ended=!0,this.paused=!0,A(this,b).ended())})}load(e){return z(this,null,function*(){var t,i;if(this.destroyed)return;const r=++this.loadSeq;if(A(this,b).invalidate(),this.video.cancelPending(),null==(t=this.loadSession)||t.cancel(),r!==this.loadSeq||this.destroyed)return;if(this.pause(),r!==this.loadSeq||this.destroyed)return;this.disposeInput();const n=new Ll;this.loadSession=n,this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,n.defer(()=>this.events.emit("waiting")),n.defer(()=>this.events.emit("loadstart"));const s=Number.isFinite(this.option.loadTimeout)&&null!=(i=this.option.loadTimeout)?i:0;try{yield n.wait(this.performLoad(e,r,n),s)}catch(a){if(r!==this.loadSeq)return;const e=++this.loadSeq;if(A(this,b).invalidate(),this.video.cancelPending(),n.cancel(),e!==this.loadSeq||this.destroyed)return;this.disposeInput(),this.reportError(a)}})}performLoad(e,t){return z(this,arguments,function*(e,t,i=this.loadSession){const r=()=>!this.destroyed&&t===this.loadSeq;if(!i||!(yield this.video.preflight(e,i.signal,r))||!r())return;const n=zl(e);if(!n)return this.video.handleNoVideoTrack(),void(r()&&this.audio.handleNoAudioTrack());i.own(n);const s=yield function(e,t){return z(this,null,function*(){const i=yield e.getPrimaryVideoTrack(),r=i?yield i.getPrimaryPairableAudioTrack():yield e.getPrimaryAudioTrack(),n=yield ql({input:e,videoTrack:i,audioTrack:r}),s=i||r,a=Ol(t);return{input:e,videoTrack:i,audioTrack:r,duration:n,isLive:!Number.isFinite(n)&&Boolean(s&&(yield s.isLive())),isHls:a,videoMode:a?"auto":"manual",audioMode:a?"auto":"manual"}})}(n,e);if(!r())return;if(!s.videoTrack&&!s.audioTrack)throw this.video.handleNoVideoTrack(),this.video.duration=Number.NaN,this.audio.duration=Number.NaN,new Error("Input has no audio or video tracks.");this.input=n,this.media=s;const a=function(e,t){let i=!1,r=!1,n=!1;function s(s){t()&&!n&&("video"===s?i=!0:r=!0,i&&r&&(n=!0,e()))}return{video:()=>s("video"),audio:()=>s("audio")}}(()=>{this.readyState=1,Ul(this.events,r,["loadedmetadata","durationchange","progress"])},r);try{const e=this.video.load(s,a.video),t=r()?this.audio.load(s,a.audio):Promise.resolve();if(yield Promise.all([e,t]),!r())return;this.readyState=4,this.networkState=1,Ul(this.events,r,["loadeddata","canplay","canplaythrough","progress"])}catch(o){if(!r())return;throw console.error("MediaBunny load error:",o),o}})}createTimeout(e){return new Promise((t,i)=>{setTimeout(()=>i(new Error("Load timeout")),e)})}disposeInput(){var e;null==(e=this.loadSession)||e.disposeInput(),this.input=null,this.media=null}replaceTracks(e){return z(this,null,function*(){if(this.media&&!this.destroyed)return A(this,b).replace(_(_({},this.media),e),this.currentTime)})}selectHlsQuality(e){return z(this,null,function*(){return function(e,t){return z(this,null,function*(){var i;const{input:r,media:n,loadSeq:s}=e;if(!(null==n?void 0:n.isHls)||!r||e.destroyed)return;const a=()=>!e.destroyed&&e.loadSeq===s&&e.input===r&&e.media===n;let o;try{const e=yield r.getVideoTracks();if(!a())return;const s="auto"===t?yield r.getPrimaryVideoTrack():null!=(i=e.find(e=>e.id===t))?i:n.videoTrack;if(!a()||!s)return;let l=n.audioTrack,c=n.audioMode;l&&s.canBePairedWith(l)||(l=yield s.getPrimaryPairableAudioTrack(),c="auto"),o={videoTrack:s,audioTrack:l,videoMode:"auto"===t?"auto":"manual",audioMode:c}}catch(l){if(!a())return;throw l}a()&&(yield e.replaceTracks(o))})}(this,e)})}selectHlsAudio(e){return z(this,null,function*(){return function(e,t){return z(this,null,function*(){var i;const{input:r,media:n,loadSeq:s}=e;if(!(null==n?void 0:n.isHls)||!r||e.destroyed)return;const a=()=>!e.destroyed&&e.loadSeq===s&&e.input===r&&e.media===n;let o;try{const e=yield r.getAudioTracks();if(!a())return;const s="auto"===t?n.videoTrack?yield n.videoTrack.getPrimaryPairableAudioTrack():yield r.getPrimaryAudioTrack():null!=(i=e.find(e=>e.id===t))?i:n.audioTrack;if(!a()||!s)return;let l=n.videoTrack,c=n.videoMode;l&&s.canBePairedWith(l)||(l=yield s.getPrimaryPairableVideoTrack(),c="auto"),o={videoTrack:l,audioTrack:s,videoMode:c,audioMode:"auto"===t?"auto":"manual"}}catch(l){if(!a())return;throw l}a()&&(yield e.replaceTracks(o))})}(this,e)})}getHlsState(){return z(this,null,function*(){const e=this.media;if(this.destroyed)return null;try{const t=yield function(e){return z(this,null,function*(){var t,i,r,n;if(!(null==e?void 0:e.isHls)||!e.input)return null;const[s,a]=yield Promise.all([e.input.getVideoTracks(),e.videoTrack?e.videoTrack.getPairableAudioTracks():[]]),[o,l]=yield Promise.all([Promise.all(s.map((e,t)=>z(null,null,function*(){return{id:e.id,track:e,index:t,name:yield e.getName(),height:yield e.getDisplayHeight(),bitrate:yield Ml(e)}}))),Promise.all(a.map((e,t)=>z(null,null,function*(){const i=yield e.getName(),r=yield e.getLanguageCode();return{id:e.id,track:e,index:t,name:i,lang:r,language:r,bitrate:yield Ml(e)}})))]);return{levels:o,audios:l,currentLevel:e.videoTrack&&null!=(t=o.find(t=>{var i;return t.id===(null==(i=e.videoTrack)?void 0:i.id)}))?t:null,currentAudio:e.audioTrack&&null!=(i=l.find(t=>{var i;return t.id===(null==(i=e.audioTrack)?void 0:i.id)}))?i:null,videoMode:null!=(r=e.videoMode)?r:"auto",audioMode:null!=(n=e.audioMode)?n:"auto"}})}(e);return this.destroyed||this.media!==e?null:t}catch(t){if(this.destroyed||this.media!==e)return null;throw t}})}play(){return z(this,null,function*(){return A(this,b).play()})}pause(){A(this,b).pause()}seek(e){return z(this,null,function*(){return A(this,b).seek(e)})}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}reportError(e){if(this.destroyed)return;const t=e&&"object"===typeof e?Reflect.get(e,"message"):void 0;this.error={code:4,message:"string"===typeof t?t:String(e)},this.networkState=3,this.events.emit("error")}destroy(){if(this.destroyed)return;this.destroyed=!0,this.loadSeq++,A(this,b).invalidate();const e=[];for(const i of[()=>{var e;return null==(e=this.loadSession)?void 0:e.cancel()},()=>this.pause(),()=>this.disposeInput(),()=>this.audio.destroy(),()=>this.video.destroy()])try{i()}catch(t){e.push(t)}if(e.length)throw e[0]}get currentTime(){return this.audio.currentTime}get duration(){var e,t,i;return null!=(i=null!=(t=null==(e=this.media)?void 0:e.duration)?t:this.audio.duration)?i:this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}b=new WeakMap;const Jl=new WeakMap;function Zl(e){let t=Jl.get(e);return t||(t={closed:!1,frames:new Set},Jl.set(e,t)),t}class ec{constructor({art:e,canvas:t,ctx:i,option:r}){var n,s;this.art=e,this.canvas=t,this.option=r,this.events=new V,this.engine=new Yl({canvas:t,ctx:i,events:this.events,option:r}),this._src=null,this._volume=null!=(n=r.volume)?n:.7,this._muted=!!r.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),r.source?this.src=r.source:(null==(s=e.option)?void 0:s.url)&&(this.src=e.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){Promise.resolve(this.engine.seek(Number(e)||0)).catch(()=>{})}get duration(){return this.engine.duration}get buffered(){return this.createTimeRanges(0,this.engine.duration)}get played(){return this.createTimeRanges(0,this.engine.currentTime)}get seekable(){return this.createTimeRanges(0,this.engine.duration)}createTimeRanges(e,t){return function(e,t,i){return!e||Number.isNaN(e)||i<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>t,end:()=>i}}(this.engine.duration,e,t)}get paused(){return this.engine.paused}get playing(){return!this.engine.paused&&!this.engine.ended}get ended(){return this.engine.ended}get seeking(){return this.engine.seeking}get readyState(){return this.engine.readyState}get networkState(){return this.engine.networkState}get error(){return this.engine.error}get playbackRate(){return this._playbackRate}set playbackRate(e){const t=Number(e);Number.isNaN(t)||t<=0||(this._playbackRate=t,this.engine.setPlaybackRate(t),this.events.emit("ratechange"))}get volume(){return this._volume}set volume(e){var t;this._volume=(t=e,Math.max(0,Math.min(1,Number(t)||0))),this._muted=!1,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}get muted(){return this._muted}set muted(e){this._muted=!!e,this.engine.setVolume(this._volume,this._muted),this.events.emit("volumechange")}play(){return this.engine.play()}pause(){this.engine.pause()}load(){this._src&&this.engine.load(this._src)}getM3u8State(){return this.engine.getHlsState()}switchM3u8Quality(e){return this.engine.selectHlsQuality(e)}switchM3u8Audio(e){return this.engine.selectHlsAudio(e)}get videoWidth(){return this.engine.videoWidth}get videoHeight(){return this.engine.videoHeight}get poster(){return this.option.poster||""}set poster(e){this.option.poster=e}get autoplay(){return this.option.autoplay||!1}set autoplay(e){}get loop(){return this.option.loop||!1}set loop(e){}get controls(){return!1}set controls(e){}get playsInline(){return!0}set playsInline(e){}get crossOrigin(){return this.option.crossOrigin||""}set crossOrigin(e){}get preload(){return"auto"}set preload(e){}get defaultMuted(){return!1}set defaultMuted(e){}get defaultPlaybackRate(){return 1}set defaultPlaybackRate(e){}canPlayType(e){return"maybe"}getBoundingClientRect(){return this.canvas.getBoundingClientRect()}requestVideoFrameCallback(e){return function(e,t){const i=Zl(e);if(i.closed)return 0;const r=requestAnimationFrame(n=>{i.frames.delete(r),i.closed||t(n,{presentationTime:e.engine.currentTime,expectedDisplayTime:n+16.6,width:e.engine.videoWidth,height:e.engine.videoHeight,mediaTime:e.engine.currentTime,presentedFrames:0,processingDuration:0,captureTime:n,receiveTime:n,rtpTimestamp:0})});return i.frames.add(r),r}(this,e)}cancelVideoFrameCallback(e){!function(e,t){Zl(e).frames.delete(t),cancelAnimationFrame(t)}(this,e)}setAttribute(e,t){"src"===e?this.src=t:"autoplay"===e?this.autoplay=t:"loop"===e?this.loop=t:"muted"===e?this.muted=!0:Reflect.apply(this.canvas.setAttribute,this.canvas,[e,t])}destroy(){if(function(e){const t=Zl(e);if(t.closed)return!1;t.closed=!0;for(const i of t.frames)cancelAnimationFrame(i);return t.frames.clear(),!0}(this))try{this.engine.destroy()}finally{this.events.destroy()}}}return function(e={}){return t=>{const{constructor:i}=t,{createElement:r}=i.utils,n=r("canvas"),s=n.getContext("2d"),a=new ec({art:t,canvas:n,ctx:s,option:e});t.mediabunny=a;const o={};for(const e in n)"function"===typeof n[e]&&(o[e]=n[e].bind(n));const l=new Set([...Object.getOwnPropertyNames(a),...Object.getOwnPropertyNames(Object.getPrototypeOf(a))]);for(const e of l)"constructor"!==e&&(e in n||Object.defineProperty(n,e,{get(){const t=a[e];return"function"===typeof t?t.bind(a):t},set(t){a[e]=t},configurable:!0,enumerable:!0}));for(const e in o)n[e]=(...t)=>o[e](...t);function c(){var e;(null==(e=t.template)?void 0:e.$player)&&!t.option.autoSize&&Object.assign(n.style,{width:"100%",height:"100%",objectFit:"contain"})}return t.on("resize",c),t.on("video:loadedmetadata",c),function({art:e,shim:t,option:i}){if(i.m3u8)return e.on("video:loadedmetadata",u),e.on("restart",u),{update:u};function r(t){e.controls.cache.has(t)&&e.controls.remove(t)}function n(t){e.setting.find(t)&&e.setting.remove(t)}function s(){r("mediabunny-quality"),n("mediabunny-quality")}function a(){r("mediabunny-audio"),n("mediabunny-audio")}function o(e={}){return e.control||e.setting}function l(r){return z(this,null,function*(){var n;const a=(null==(n=i.m3u8)?void 0:n.quality)||{};if(!o(a)||!(null==r?void 0:r.levels.length))return void s();const l=a.auto||"Auto",c=a.title||"Quality",d=a.getName||(e=>e.name||`${e.height}P`),h=r.currentLevel?d(r.currentLevel):l,f=H(r.levels.map(e=>{var t;return{html:d(e),value:e.id,default:(null==(t=r.currentLevel)?void 0:t.id)===e.id}}),"html").sort((e,t)=>{const i=r.levels.find(t=>t.id===e.value),n=r.levels.find(e=>e.id===t.value);return((null==n?void 0:n.height)||0)-((null==i?void 0:i.height)||0)});f.push({html:l,value:"auto",default:!r.currentLevel});const m=i=>z(null,null,function*(){return yield t.switchM3u8Quality(i.value),e.notice.show=`${c}: ${i.html}`,yield u(),i.html});a.control&&e.controls.update({name:"mediabunny-quality",position:"right",html:h,style:{padding:"0 10px"},selector:f,onSelect:m}),a.setting&&e.setting.update({name:"mediabunny-quality",tooltip:h,html:c,icon:'',width:200,selector:f,onSelect:m})})}function c(r){return z(this,null,function*(){var n;const s=(null==(n=i.m3u8)?void 0:n.audio)||{};if(!o(s)||!(null==r?void 0:r.audios.length)||r.audios.length<2)return void a();const l=s.auto||"Auto",c=s.title||"Audio",d=s.getName||(e=>e.name||e.lang||e.language),h=r.currentAudio?d(r.currentAudio):l,f=H(r.audios.map(e=>{var t;return{html:d(e),value:e.id,default:(null==(t=r.currentAudio)?void 0:t.id)===e.id}}),"html");f.push({html:l,value:"auto",default:!r.currentAudio});const m=i=>z(null,null,function*(){return yield t.switchM3u8Audio(i.value),e.notice.show=`${c}: ${i.html}`,yield u(),i.html});s.control&&e.controls.update({name:"mediabunny-audio",position:"right",html:h,style:{padding:"0 10px"},selector:f,onSelect:m}),s.setting&&e.setting.update({name:"mediabunny-audio",tooltip:h,html:c,icon:'',width:200,selector:f,onSelect:m})})}function u(){return z(this,null,function*(){const e=yield t.getM3u8State();if(!e)return s(),void a();yield Promise.all([l(e),c(e)])})}}({art:t,shim:a,option:e}),t.on("destroy",()=>{delete t.mediabunny,a.destroy()}),n}}}); diff --git a/packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.mjs b/packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.mjs index ab7fa87c5..322e9ce8b 100644 --- a/packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.mjs +++ b/packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.mjs @@ -11,7 +11,16 @@ var __accessCheck = (obj, member, msg) => member.has(obj) || __typeError("Cannot var __privateGet = (obj, member, getter) => (__accessCheck(obj, member, "read from private field"), getter ? getter.call(obj) : member.get(obj)); var __privateAdd = (obj, member, value) => member.has(obj) ? __typeError("Cannot add the same private member more than once") : member instanceof WeakSet ? member.add(obj) : member.set(obj, value); var __privateSet = (obj, member, value, setter) => (__accessCheck(obj, member, "write to private field"), setter ? setter.call(obj, value) : member.set(obj, value), value); -var _closed, _playback; +var __privateMethod = (obj, member, method) => (__accessCheck(obj, member, "access private method"), method); +var __privateWrapper = (obj, member, setter, getter) => ({ + set _(value) { + __privateSet(obj, member, value, setter); + }, + get _() { + return __privateGet(obj, member, getter); + } +}); +var _closed, _generation, _iteration, _loading, _createSink, _usedSink, _destroyed, _preparing, _poster, _renderer, _onError, _VideoEngine_instances, current_fn, context_fn, report_fn, release_fn, draw_fn, load_fn, reset_fn, _playback; const $audio = ''; const $quality = ''; function uniqBy(array, property) { @@ -24741,17 +24750,240 @@ async function preflightRange(url, enabled, events, signal, isCurrent = () => tr return true; } } +const closing = /* @__PURE__ */ new WeakMap(); +const reading = /* @__PURE__ */ new WeakMap(); +function releaseIterator(iterator) { + if (!iterator) + return Promise.resolve(); + const previous = closing.get(iterator); + if (previous) + return previous; + const pending = Promise.resolve().then(() => iterator.return()).then(() => { + }); + closing.set(iterator, pending); + return pending; +} +function readCanvas(iterator) { + const previous = reading.get(iterator); + if (previous) + return previous; + const pending = Promise.resolve().then(() => iterator.next()).then((result) => result.value ?? null); + reading.set(iterator, pending); + const clear = () => { + if (reading.get(iterator) === pending) + reading.delete(iterator); + }; + pending.then(clear, clear); + return pending; +} +function frameAction(timestamp, time, dropLateFrames, avSyncTolerance, playbackRate) { + const tolerance = dropLateFrames ? Math.max(0.06, avSyncTolerance / Math.max(1, playbackRate)) : 0; + if (dropLateFrames && timestamp < time - tolerance) + return "skip"; + return timestamp <= time + tolerance ? "draw" : "queue"; +} +class Poster { + constructor() { + this.image = null; + } + cancel() { + if (!this.image) + return; + this.image.onload = null; + this.image.onerror = null; + this.image = null; + } + draw(source, current, draw, failure) { + this.cancel(); + const image = new Image(); + this.image = image; + image.onload = () => { + if (this.image !== image || !current()) + return; + this.cancel(); + try { + draw(image); + } catch (error) { + failure(error); + } + }; + image.onerror = () => { + if (this.image === image) + this.cancel(); + }; + image.src = source; + } +} +class Renderer { + constructor(host, ready, draw, failure) { + this.host = host; + this.ready = ready; + this.draw = draw; + this.failure = failure; + this.stopped = false; + this.closed = false; + this.scheduled = null; + this.fetching = null; + } + current(id) { + return !this.closed && !this.stopped && this.host.asyncId === id; + } + async update(id) { + const iterator = this.host.videoIterator; + if (!iterator || !this.ready() || !this.current(id) || this.host.isFetching) + return; + const request = {}; + this.fetching = request; + this.host.isFetching = true; + const current = () => this.current(id) && this.host.videoIterator === iterator; + try { + while (current()) { + const frame = await readCanvas(iterator); + if (!current() || !frame) + return; + const time = this.host.audioClock?.currentTime; + if (time === void 0) + return; + const action = frameAction(frame.timestamp, time, this.host.dropLateFrames, this.host.avSyncTolerance, this.host.playbackRate); + if (action === "skip") + continue; + if (action === "draw") { + this.draw(frame); + } else { + this.host.nextFrame = frame; + return; + } + } + } catch (error) { + if (current()) + throw error; + } finally { + if (this.fetching === request) { + this.fetching = null; + this.host.isFetching = false; + } + } + } + request(id) { + void this.update(id).catch((error) => { + if (!this.current(id)) + return; + this.stop(); + this.report(error); + }); + } + report(error) { + try { + this.failure(error); + } catch (failure) { + console.warn("MediaBunny video error listener:", failure); + } + } + cancelFrame() { + if (this.scheduled === null) + return; + cancelAnimationFrame(this.scheduled); + this.scheduled = null; + } + schedule(id) { + if (!this.current(id)) + return; + this.cancelFrame(); + const frame = requestAnimationFrame(() => { + if (this.scheduled !== frame || !this.current(id)) + return; + this.scheduled = null; + try { + this.render(); + } catch (error) { + this.stop(); + this.report(error); + } + }); + this.scheduled = frame; + this.host.rafId = frame; + } + render() { + const id = this.host.asyncId; + const current = () => this.current(id); + if (!current() || !this.host.audioClock) + return; + const time = this.host.audioClock.currentTime; + const now = Date.now(); + if (now - this.host.lastTimeUpdate >= this.host.timeupdateInterval) { + this.host.events.emit("timeupdate"); + if (!current()) + return; + this.host.lastTimeUpdate = now; + } + if (!this.ready()) { + this.schedule(id); + return; + } + if (Number.isFinite(this.host.duration) && time >= this.host.duration) { + this.stop(); + this.host.stalled = false; + const ended = this.host.asyncId; + publish(this.host.events, () => !this.closed && this.host.asyncId === ended, ["ended", "pause", "canplay"]); + return; + } + if (this.host.nextFrame && this.host.nextFrame.timestamp <= time) { + this.draw(this.host.nextFrame); + this.host.nextFrame = null; + this.request(id); + if (this.host.stalled) { + publish(this.host.events, current, ["canplay", "playing"]); + if (!current()) + return; + this.host.stalled = false; + } + } else if (!this.host.nextFrame) { + this.request(id); + if (Number.isFinite(this.host.duration) && time < this.host.duration && !this.host.stalled) { + this.host.stalled = true; + this.host.events.emit("waiting"); + } + } + this.schedule(id); + } + start(clock) { + if (this.closed) + return; + this.stop(); + this.stopped = false; + this.host.audioClock = clock; + this.host.stalled = false; + if (!this.host.nextFrame) + this.request(this.host.asyncId); + this.schedule(this.host.asyncId); + } + stop() { + this.stopped = true; + this.host.asyncId++; + this.cancelFrame(); + this.fetching = null; + this.host.isFetching = false; + } + destroy() { + if (this.closed) + return; + this.stop(); + this.closed = true; + } +} class VideoEngine { - constructor({ - canvas, - ctx, - events, - timeupdateInterval = 250, - avSyncTolerance = 0.12, - dropLateFrames = false, - poster = "", - preflightRange: preflightRange2 = false - }) { + constructor({ canvas, ctx, events, timeupdateInterval = 250, avSyncTolerance = 0.12, dropLateFrames = false, poster = "", preflightRange: preflightRange2 = false, onError }) { + __privateAdd(this, _VideoEngine_instances); + __privateAdd(this, _generation, 0); + __privateAdd(this, _iteration, 0); + __privateAdd(this, _loading, null); + __privateAdd(this, _createSink, null); + __privateAdd(this, _usedSink, null); + __privateAdd(this, _destroyed, false); + __privateAdd(this, _preparing, false); + __privateAdd(this, _poster, new Poster()); + __privateAdd(this, _renderer); + __privateAdd(this, _onError); this.canvas = canvas; this.ctx = ctx; this.events = events; @@ -24775,33 +25007,171 @@ class VideoEngine { this.playbackRate = 1; this.posterDrawn = false; this.isFetching = false; + __privateSet(this, _onError, onError); + __privateSet(this, _renderer, new Renderer(this, () => !__privateGet(this, _preparing), (frame) => __privateMethod(this, _VideoEngine_instances, draw_fn).call(this, frame, true), (error) => __privateMethod(this, _VideoEngine_instances, report_fn).call(this, error))); } - async preflight(url, signal, isCurrent) { - return preflightRange(url, this.preflightRange, this.events, signal, isCurrent); + async preflight(source, signal, current) { + return preflightRange(source, this.preflightRange, this.events, signal, current); } drawPoster() { - if (!this.poster || this.posterDrawn) + if (__privateGet(this, _destroyed) || !this.poster || this.posterDrawn) return; - const img = new Image(); - img.onload = () => { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); - this.canvas.width = img.naturalWidth || this.canvas.width; - this.canvas.height = img.naturalHeight || this.canvas.height; - this.ctx.drawImage(img, 0, 0, this.canvas.width, this.canvas.height); + const generation = __privateGet(this, _generation); + __privateGet(this, _poster).draw(this.poster, () => __privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation), (image) => { + this.clear(); + this.canvas.width = image.naturalWidth || this.canvas.width; + this.canvas.height = image.naturalHeight || this.canvas.height; + __privateMethod(this, _VideoEngine_instances, context_fn).call(this).drawImage(image, 0, 0, this.canvas.width, this.canvas.height); this.posterDrawn = true; - }; - img.src = this.poster; + }, (error) => __privateMethod(this, _VideoEngine_instances, report_fn).call(this, error)); } async stopIterator() { - await this.videoIterator?.return(); + const iterator = this.videoIterator; this.videoIterator = null; + this.nextFrame = null; + await releaseIterator(iterator); } clear() { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); + __privateMethod(this, _VideoEngine_instances, context_fn).call(this).clearRect(0, 0, this.canvas.width, this.canvas.height); + } + cancelPending() { + __privateWrapper(this, _generation)._++; + __privateWrapper(this, _iteration)._++; + this.stop(); + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + __privateGet(this, _poster).cancel(); + __privateSet(this, _preparing, false); + __privateSet(this, _loading, null); + __privateSet(this, _createSink, null); + __privateSet(this, _usedSink, null); + this.videoSink = null; + this.input = null; } async load(media, onMetadata) { - ++this.asyncId; - await this.stopIterator(); + if (__privateGet(this, _destroyed)) + return; + this.cancelPending(); + const generation = __privateGet(this, _generation); + const iteration = __privateGet(this, _iteration); + __privateSet(this, _preparing, true); + const pending = Promise.resolve().then(() => __privateMethod(this, _VideoEngine_instances, load_fn).call(this, media, generation, iteration, onMetadata)); + __privateSet(this, _loading, pending); + try { + await pending; + } finally { + if (__privateGet(this, _loading) === pending) + __privateSet(this, _loading, null); + } + } + handleNoVideoTrack() { + if (__privateGet(this, _destroyed)) + return; + this.videoSink = null; + this.width = 0; + this.height = 0; + this.canvas.width = 0; + this.canvas.height = 0; + this.clear(); + this.drawPoster(); + } + async resetIterator(time) { + if (__privateGet(this, _destroyed)) + return; + const generation = __privateGet(this, _generation); + const iteration = ++__privateWrapper(this, _iteration)._; + const loading = __privateGet(this, _loading); + this.stop(); + __privateGet(this, _poster).cancel(); + __privateSet(this, _preparing, true); + try { + if (loading) + await loading; + await __privateMethod(this, _VideoEngine_instances, reset_fn).call(this, time, generation, iteration); + } catch (error) { + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) && __privateGet(this, _iteration) === iteration) { + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + throw error; + } + } finally { + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) && __privateGet(this, _iteration) === iteration) + __privateSet(this, _preparing, false); + } + } + async updateNextFrame(localId) { + await __privateGet(this, _renderer).update(localId); + } + render() { + __privateGet(this, _renderer).render(); + } + start(audio) { + __privateGet(this, _renderer).start(audio); + } + stop() { + __privateGet(this, _renderer).stop(); + } + async seek(time) { + await this.resetIterator(time); + } + setPlaybackRate(rate) { + this.playbackRate = Math.max(0.1, Number(rate) || 1); + } + destroy() { + if (__privateGet(this, _destroyed)) + return; + __privateSet(this, _destroyed, true); + __privateWrapper(this, _generation)._++; + __privateGet(this, _renderer).destroy(); + __privateGet(this, _poster).cancel(); + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + this.posterDrawn = false; + __privateSet(this, _createSink, null); + __privateSet(this, _usedSink, null); + this.videoSink = null; + this.input = null; + this.audioClock = null; + } +} +_generation = new WeakMap(); +_iteration = new WeakMap(); +_loading = new WeakMap(); +_createSink = new WeakMap(); +_usedSink = new WeakMap(); +_destroyed = new WeakMap(); +_preparing = new WeakMap(); +_poster = new WeakMap(); +_renderer = new WeakMap(); +_onError = new WeakMap(); +_VideoEngine_instances = new WeakSet(); +current_fn = function(generation) { + return !__privateGet(this, _destroyed) && __privateGet(this, _generation) === generation; +}; +context_fn = function() { + if (!this.ctx) + throw new Error("Canvas 2D context is unavailable."); + return this.ctx; +}; +report_fn = function(error) { + if (__privateGet(this, _destroyed)) + return; + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + if (__privateGet(this, _onError)) + __privateGet(this, _onError).call(this, error); + else + this.events.emit("error", error); +}; +release_fn = function() { + void this.stopIterator().catch((error) => console.warn("MediaBunny iterator cleanup error:", error)); +}; +draw_fn = function(frame, clear) { + __privateGet(this, _poster).cancel(); + if (clear) + this.clear(); + __privateMethod(this, _VideoEngine_instances, context_fn).call(this).drawImage(frame.canvas, 0, 0); +}; +load_fn = async function(media, generation, iteration, onMetadata) { + if (!__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + return; + try { this.clear(); this.posterDrawn = false; const { input, videoTrack, duration } = media; @@ -24812,139 +25182,61 @@ class VideoEngine { onMetadata?.(); return; } - if (videoTrack.codec === null || !await videoTrack.canDecode()) { + const decodable = videoTrack.codec !== null && await videoTrack.canDecode(); + if (!__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + return; + if (!decodable) { this.handleNoVideoTrack(); onMetadata?.(); return; } const transparent = await videoTrack.canBeTransparent(); - this.videoSink = new CanvasSink(videoTrack, { - poolSize: 2, - fit: "contain", - alpha: transparent - }); + if (!__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + return; + __privateSet(this, _createSink, () => new CanvasSink(videoTrack, { poolSize: 2, fit: "contain", alpha: transparent })); + this.videoSink = __privateGet(this, _createSink).call(this); this.width = videoTrack.displayWidth; this.height = videoTrack.displayHeight; this.canvas.width = this.width; this.canvas.height = this.height; onMetadata?.(); - await this.resetIterator(0); + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + await __privateMethod(this, _VideoEngine_instances, reset_fn).call(this, 0, generation, iteration); + } catch (error) { + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) { + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + throw error; + } + } finally { + if (__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) && __privateGet(this, _iteration) === iteration) + __privateSet(this, _preparing, false); } - handleNoVideoTrack() { - this.videoSink = null; - this.width = 0; - this.height = 0; - this.canvas.width = 0; - this.canvas.height = 0; - this.clear(); +}; +reset_fn = async function(time, generation, iteration) { + if (!__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) || __privateGet(this, _iteration) !== iteration) + return; + __privateMethod(this, _VideoEngine_instances, release_fn).call(this); + if (__privateGet(this, _createSink) && this.videoSink === __privateGet(this, _usedSink)) + this.videoSink = __privateGet(this, _createSink).call(this); + const sink = this.videoSink; + if (!sink || !__privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation)) + return; + __privateSet(this, _usedSink, sink); + const iterator = sink.canvases(time); + this.videoIterator = iterator; + const current = () => __privateMethod(this, _VideoEngine_instances, current_fn).call(this, generation) && __privateGet(this, _iteration) === iteration && this.videoIterator === iterator; + const first = await readCanvas(iterator); + if (!current()) + return; + const second = await readCanvas(iterator); + if (!current()) + return; + this.nextFrame = second; + if (first) + __privateMethod(this, _VideoEngine_instances, draw_fn).call(this, first, false); + else this.drawPoster(); - } - async resetIterator(time) { - await this.stopIterator(); - if (!this.videoSink) - return; - this.videoIterator = this.videoSink.canvases(time); - const first = (await this.videoIterator.next()).value ?? null; - const second = (await this.videoIterator.next()).value ?? null; - this.nextFrame = second; - if (first) { - this.ctx.drawImage(first.canvas, 0, 0); - } else { - this.drawPoster(); - } - } - async updateNextFrame(localId) { - if (!this.videoIterator || this.isFetching) - return; - this.isFetching = true; - try { - while (true) { - const frame = (await this.videoIterator.next()).value ?? null; - if (!frame || localId !== this.asyncId) - return; - const t = this.audioClock.currentTime; - const tolerance = this.dropLateFrames ? Math.max(0.06, this.avSyncTolerance / Math.max(1, this.playbackRate)) : 0; - if (this.dropLateFrames && frame.timestamp < t - tolerance) { - continue; - } - if (frame.timestamp <= t + tolerance) { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); - this.ctx.drawImage(frame.canvas, 0, 0); - if (!this.dropLateFrames && frame.timestamp > t) { - this.nextFrame = null; - return; - } - } else { - this.nextFrame = frame; - return; - } - } - } finally { - this.isFetching = false; - } - } - render() { - if (!this.audioClock) - return; - const t = this.audioClock.currentTime; - const now = Date.now(); - if (now - this.lastTimeUpdate >= this.timeupdateInterval) { - this.events.emit("timeupdate"); - this.lastTimeUpdate = now; - } - if (Number.isFinite(this.duration) && t >= this.duration) { - this.stop(); - this.stalled = false; - this.events.emit("ended"); - this.events.emit("pause"); - this.events.emit("canplay"); - return; - } - if (this.nextFrame && this.nextFrame.timestamp <= t) { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); - this.ctx.drawImage(this.nextFrame.canvas, 0, 0); - this.nextFrame = null; - this.updateNextFrame(this.asyncId); - if (this.stalled) { - this.events.emit("canplay"); - this.events.emit("playing"); - this.stalled = false; - } - } else if (!this.nextFrame) { - this.updateNextFrame(this.asyncId); - if (!this.nextFrame && Number.isFinite(this.duration) && t < this.duration && !this.stalled) { - this.stalled = true; - this.events.emit("waiting"); - } - } - this.rafId = requestAnimationFrame(() => this.render()); - } - start(audioEngine) { - this.audioClock = audioEngine; - this.asyncId++; - this.stalled = false; - this.updateNextFrame(this.asyncId); - this.rafId = requestAnimationFrame(() => this.render()); - } - stop() { - cancelAnimationFrame(this.rafId); - } - async seek(time) { - this.asyncId++; - await this.resetIterator(time); - } - setPlaybackRate(rate) { - this.playbackRate = Math.max(0.1, Number(rate) || 1); - } - destroy() { - this.asyncId++; - this.stop(); - this.stopIterator(); - this.posterDrawn = false; - this.videoSink = null; - this.input = null; - } -} +}; class MediaBunnyEngine { constructor({ canvas, ctx, events, option = {} }) { __privateAdd(this, _playback); @@ -24959,7 +25251,15 @@ class MediaBunnyEngine { avSyncTolerance: option.avSyncTolerance ?? 0.12, dropLateFrames: option.dropLateFrames ?? false, poster: option.poster ?? "", - preflightRange: option.preflightRange ?? false + preflightRange: option.preflightRange ?? false, + onError: (error) => { + try { + this.pause(); + } catch (failure) { + console.warn("MediaBunny video failure cleanup:", failure); + } + this.reportError(error); + } }); this.paused = true; this.ended = false; @@ -24986,6 +25286,7 @@ class MediaBunnyEngine { return; const id = ++this.loadSeq; __privateGet(this, _playback).invalidate(); + this.video.cancelPending(); this.loadSession?.cancel(); if (id !== this.loadSeq || this.destroyed) return; @@ -25009,6 +25310,7 @@ class MediaBunnyEngine { return; const failed = ++this.loadSeq; __privateGet(this, _playback).invalidate(); + this.video.cancelPending(); session.cancel(); if (failed !== this.loadSeq || this.destroyed) return; diff --git a/packages/artplayer-proxy-mediabunny/src/MediaBunnyEngine.ts b/packages/artplayer-proxy-mediabunny/src/MediaBunnyEngine.ts index 6a0785c9d..1bcbefb0e 100644 --- a/packages/artplayer-proxy-mediabunny/src/MediaBunnyEngine.ts +++ b/packages/artplayer-proxy-mediabunny/src/MediaBunnyEngine.ts @@ -45,6 +45,15 @@ export default class MediaBunnyEngine implements EnginePort { dropLateFrames: option.dropLateFrames ?? false, poster: option.poster ?? '', preflightRange: option.preflightRange ?? false, + onError: (error) => { + try { + this.pause() + } + catch (failure) { + console.warn('MediaBunny video failure cleanup:', failure) + } + this.reportError(error) + }, }) this.paused = true this.ended = false @@ -72,6 +81,7 @@ export default class MediaBunnyEngine implements EnginePort { return const id = ++this.loadSeq this.#playback.invalidate() + this.video.cancelPending() this.loadSession?.cancel() if (id !== this.loadSeq || this.destroyed) return @@ -96,6 +106,7 @@ export default class MediaBunnyEngine implements EnginePort { return const failed = ++this.loadSeq this.#playback.invalidate() + this.video.cancelPending() session.cancel() if (failed !== this.loadSeq || this.destroyed) return diff --git a/packages/artplayer-proxy-mediabunny/src/VideoEngine.d.ts b/packages/artplayer-proxy-mediabunny/src/VideoEngine.d.ts deleted file mode 100644 index fab3cd13c..000000000 --- a/packages/artplayer-proxy-mediabunny/src/VideoEngine.d.ts +++ /dev/null @@ -1,5 +0,0 @@ -import type { VideoOptions, VideoPort } from './engine-ports' - -// Exact coordinator-facing port; implementation migration and frame ownership are MB-05. -declare const VideoEngine: new (options: VideoOptions) => VideoPort -export default VideoEngine diff --git a/packages/artplayer-proxy-mediabunny/src/VideoEngine.js b/packages/artplayer-proxy-mediabunny/src/VideoEngine.js deleted file mode 100644 index 8a4ad7846..000000000 --- a/packages/artplayer-proxy-mediabunny/src/VideoEngine.js +++ /dev/null @@ -1,272 +0,0 @@ -/** - * Video Engine for MediaBunny - * Handles video frame rendering and synchronization - */ -import { - CanvasSink, -} from 'mediabunny' -import { preflightRange } from './preflight' - -export default class VideoEngine { - constructor({ - canvas, - ctx, - events, - timeupdateInterval = 250, - avSyncTolerance = 0.12, - dropLateFrames = false, - poster = '', - preflightRange = false, - }) { - this.canvas = canvas - this.ctx = ctx - this.events = events - this.timeupdateInterval = timeupdateInterval - this.avSyncTolerance = avSyncTolerance - this.dropLateFrames = dropLateFrames - this.poster = poster - this.preflightRange = preflightRange - - // MediaBunny instances - this.input = null - this.videoSink = null - this.videoIterator = null - - // Frame rendering - this.nextFrame = null - this.rafId = 0 - this.asyncId = 0 - - // Video properties - this.width = 0 - this.height = 0 - this.duration = Number.NaN - - // Playback state - this.audioClock = null - this.lastTimeUpdate = 0 - this.stalled = false - this.playbackRate = 1 - this.posterDrawn = false - this.isFetching = false - } - - async preflight(url, signal, isCurrent) { - return preflightRange(url, this.preflightRange, this.events, signal, isCurrent) - } - - drawPoster() { - if (!this.poster || this.posterDrawn) - return - - const img = new Image() - img.onload = () => { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height) - this.canvas.width = img.naturalWidth || this.canvas.width - this.canvas.height = img.naturalHeight || this.canvas.height - this.ctx.drawImage(img, 0, 0, this.canvas.width, this.canvas.height) - this.posterDrawn = true - } - img.src = this.poster - } - - async stopIterator() { - await this.videoIterator?.return() - this.videoIterator = null - } - - clear() { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height) - } - - async load(media, onMetadata) { - ++this.asyncId - - await this.stopIterator() - this.clear() - this.posterDrawn = false - - const { input, videoTrack, duration } = media - this.input = input - this.duration = duration - - if (!videoTrack) { - this.handleNoVideoTrack() - onMetadata?.() - return - } - - if (videoTrack.codec === null || !(await videoTrack.canDecode())) { - this.handleNoVideoTrack() - onMetadata?.() - return - } - - const transparent = await videoTrack.canBeTransparent() - this.videoSink = new CanvasSink(videoTrack, { - poolSize: 2, - fit: 'contain', - alpha: transparent, - }) - - this.width = videoTrack.displayWidth - this.height = videoTrack.displayHeight - - this.canvas.width = this.width - this.canvas.height = this.height - - onMetadata?.() - - await this.resetIterator(0) - } - - handleNoVideoTrack() { - this.videoSink = null - this.width = 0 - this.height = 0 - this.canvas.width = 0 - this.canvas.height = 0 - this.clear() - this.drawPoster() - } - - async resetIterator(time) { - await this.stopIterator() - - if (!this.videoSink) - return - - this.videoIterator = this.videoSink.canvases(time) - - const first = (await this.videoIterator.next()).value ?? null - const second = (await this.videoIterator.next()).value ?? null - - this.nextFrame = second - - if (first) { - this.ctx.drawImage(first.canvas, 0, 0) - } - else { - this.drawPoster() - } - } - - async updateNextFrame(localId) { - if (!this.videoIterator || this.isFetching) - return - - this.isFetching = true - try { - while (true) { - const frame = (await this.videoIterator.next()).value ?? null - if (!frame || localId !== this.asyncId) - return - - const t = this.audioClock.currentTime - const tolerance = this.dropLateFrames - ? Math.max(0.06, this.avSyncTolerance / Math.max(1, this.playbackRate)) - : 0 - - if (this.dropLateFrames && frame.timestamp < t - tolerance) { - // Skip late frame - continue - } - - if (frame.timestamp <= t + tolerance) { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height) - this.ctx.drawImage(frame.canvas, 0, 0) - - if (!this.dropLateFrames && frame.timestamp > t) { - this.nextFrame = null - return - } - } - else { - this.nextFrame = frame - return - } - } - } - finally { - this.isFetching = false - } - } - - render() { - if (!this.audioClock) - return - - const t = this.audioClock.currentTime - const now = Date.now() - - // Emit timeupdate event - if (now - this.lastTimeUpdate >= this.timeupdateInterval) { - this.events.emit('timeupdate') - this.lastTimeUpdate = now - } - - // Check if reached end - if (Number.isFinite(this.duration) && t >= this.duration) { - this.stop() - this.stalled = false - this.events.emit('ended') - this.events.emit('pause') - this.events.emit('canplay') - return - } - - // Render next frame if ready - if (this.nextFrame && this.nextFrame.timestamp <= t) { - this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height) - this.ctx.drawImage(this.nextFrame.canvas, 0, 0) - this.nextFrame = null - this.updateNextFrame(this.asyncId) - - if (this.stalled) { - this.events.emit('canplay') - this.events.emit('playing') - this.stalled = false - } - } - else if (!this.nextFrame) { - this.updateNextFrame(this.asyncId) - - if (!this.nextFrame && Number.isFinite(this.duration) && t < this.duration && !this.stalled) { - this.stalled = true - this.events.emit('waiting') - } - } - - this.rafId = requestAnimationFrame(() => this.render()) - } - - start(audioEngine) { - this.audioClock = audioEngine - this.asyncId++ - this.stalled = false - this.updateNextFrame(this.asyncId) - this.rafId = requestAnimationFrame(() => this.render()) - } - - stop() { - cancelAnimationFrame(this.rafId) - } - - async seek(time) { - this.asyncId++ - await this.resetIterator(time) - } - - setPlaybackRate(rate) { - this.playbackRate = Math.max(0.1, Number(rate) || 1) - } - - destroy() { - this.asyncId++ - this.stop() - this.stopIterator() - this.posterDrawn = false - this.videoSink = null - this.input = null - } -} diff --git a/packages/artplayer-proxy-mediabunny/src/VideoEngine.ts b/packages/artplayer-proxy-mediabunny/src/VideoEngine.ts new file mode 100644 index 000000000..b6a9f5510 --- /dev/null +++ b/packages/artplayer-proxy-mediabunny/src/VideoEngine.ts @@ -0,0 +1,316 @@ +import type { Input, WrappedCanvas } from 'mediabunny' +import type { VideoOptions, VideoPort } from './engine-ports' +import type EventTarget from './EventTarget' +import type { PlaybackMedia } from './media' +import type { FrameIterator } from './video-frames' +import { CanvasSink } from 'mediabunny' +import { preflightRange } from './preflight' +import { readCanvas, releaseIterator } from './video-frames' +import Poster from './video-poster' +import Renderer from './video-renderer' + +export default class VideoEngine implements VideoPort { + declare canvas: HTMLCanvasElement + declare ctx: CanvasRenderingContext2D | null + declare events: EventTarget + declare timeupdateInterval: number + declare avSyncTolerance: number + declare dropLateFrames: boolean + declare poster: string + declare preflightRange: boolean + declare input: Input | null + declare videoSink: CanvasSink | null + declare videoIterator: FrameIterator | null + declare nextFrame: WrappedCanvas | null + declare rafId: number + declare asyncId: number + declare width: number + declare height: number + declare duration: number + declare audioClock: { readonly currentTime: number } | null + declare lastTimeUpdate: number + declare stalled: boolean + declare playbackRate: number + declare posterDrawn: boolean + declare isFetching: boolean + #generation = 0 + #iteration = 0 + #loading: Promise | null = null + #createSink: (() => CanvasSink) | null = null + #usedSink: CanvasSink | null = null + #destroyed = false + #preparing = false + #poster = new Poster() + #renderer: Renderer + #onError: ((error: unknown) => void) | undefined + + constructor({ canvas, ctx, events, timeupdateInterval = 250, avSyncTolerance = 0.12, dropLateFrames = false, poster = '', preflightRange = false, onError }: VideoOptions) { + this.canvas = canvas + this.ctx = ctx + this.events = events + this.timeupdateInterval = timeupdateInterval + this.avSyncTolerance = avSyncTolerance + this.dropLateFrames = dropLateFrames + this.poster = poster + this.preflightRange = preflightRange + this.input = null + this.videoSink = null + this.videoIterator = null + this.nextFrame = null + this.rafId = 0 + this.asyncId = 0 + this.width = 0 + this.height = 0 + this.duration = Number.NaN + this.audioClock = null + this.lastTimeUpdate = 0 + this.stalled = false + this.playbackRate = 1 + this.posterDrawn = false + this.isFetching = false + this.#onError = onError + this.#renderer = new Renderer(this, () => !this.#preparing, frame => this.#draw(frame, true), error => this.#report(error)) + } + + #current(generation: number): boolean { + return !this.#destroyed && this.#generation === generation + } + + #context(): CanvasRenderingContext2D { + if (!this.ctx) + throw new Error('Canvas 2D context is unavailable.') + return this.ctx + } + + #report(error: unknown): void { + if (this.#destroyed) + return + this.#release() + if (this.#onError) + this.#onError(error) + else + this.events.emit('error', error) + } + + #release(): void { + void this.stopIterator().catch(error => console.warn('MediaBunny iterator cleanup error:', error)) + } + + #draw(frame: WrappedCanvas, clear: boolean): void { + this.#poster.cancel() + if (clear) + this.clear() + this.#context().drawImage(frame.canvas, 0, 0) + } + + async preflight(source: unknown, signal?: AbortSignal, current?: () => boolean): Promise { + return preflightRange(source, this.preflightRange, this.events, signal, current) + } + + drawPoster(): void { + if (this.#destroyed || !this.poster || this.posterDrawn) + return + const generation = this.#generation + this.#poster.draw(this.poster, () => this.#current(generation), (image) => { + this.clear() + this.canvas.width = image.naturalWidth || this.canvas.width + this.canvas.height = image.naturalHeight || this.canvas.height + this.#context().drawImage(image, 0, 0, this.canvas.width, this.canvas.height) + this.posterDrawn = true + }, error => this.#report(error)) + } + + async stopIterator(): Promise { + const iterator = this.videoIterator + this.videoIterator = null + this.nextFrame = null + await releaseIterator(iterator) + } + + clear(): void { + this.#context().clearRect(0, 0, this.canvas.width, this.canvas.height) + } + + cancelPending(): void { + this.#generation++ + this.#iteration++ + this.stop() + this.#release() + this.#poster.cancel() + this.#preparing = false + this.#loading = null + this.#createSink = null + this.#usedSink = null + this.videoSink = null + this.input = null + } + + async load(media: PlaybackMedia, onMetadata?: () => void): Promise { + if (this.#destroyed) + return + this.cancelPending() + const generation = this.#generation + const iteration = this.#iteration + this.#preparing = true + const pending = Promise.resolve().then(() => this.#load(media, generation, iteration, onMetadata)) + this.#loading = pending + try { + await pending + } + finally { + if (this.#loading === pending) + this.#loading = null + } + } + + async #load(media: PlaybackMedia, generation: number, iteration: number, onMetadata?: () => void): Promise { + if (!this.#current(generation)) + return + try { + this.clear() + this.posterDrawn = false + const { input, videoTrack, duration } = media + this.input = input + this.duration = duration + if (!videoTrack) { + this.handleNoVideoTrack() + onMetadata?.() + return + } + const decodable = videoTrack.codec !== null && await videoTrack.canDecode() + if (!this.#current(generation)) + return + if (!decodable) { + this.handleNoVideoTrack() + onMetadata?.() + return + } + const transparent = await videoTrack.canBeTransparent() + if (!this.#current(generation)) + return + this.#createSink = () => new CanvasSink(videoTrack, { poolSize: 2, fit: 'contain', alpha: transparent }) + this.videoSink = this.#createSink() + this.width = videoTrack.displayWidth + this.height = videoTrack.displayHeight + this.canvas.width = this.width + this.canvas.height = this.height + onMetadata?.() + if (this.#current(generation)) + await this.#reset(0, generation, iteration) + } + catch (error) { + if (this.#current(generation)) { + this.#release() + throw error + } + } + finally { + if (this.#current(generation) && this.#iteration === iteration) + this.#preparing = false + } + } + + handleNoVideoTrack(): void { + if (this.#destroyed) + return + this.videoSink = null + this.width = 0 + this.height = 0 + this.canvas.width = 0 + this.canvas.height = 0 + this.clear() + this.drawPoster() + } + + async #reset(time: number, generation: number, iteration: number): Promise { + if (!this.#current(generation) || this.#iteration !== iteration) + return + this.#release() + if (this.#createSink && this.videoSink === this.#usedSink) + this.videoSink = this.#createSink() + const sink = this.videoSink + if (!sink || !this.#current(generation)) + return + this.#usedSink = sink + const iterator = sink.canvases(time) + this.videoIterator = iterator + const current = () => this.#current(generation) && this.#iteration === iteration && this.videoIterator === iterator + const first = await readCanvas(iterator) + if (!current()) + return + const second = await readCanvas(iterator) + if (!current()) + return + this.nextFrame = second + if (first) + this.#draw(first, false) + else + this.drawPoster() + } + + async resetIterator(time: number): Promise { + if (this.#destroyed) + return + const generation = this.#generation + const iteration = ++this.#iteration + const loading = this.#loading + this.stop() + this.#poster.cancel() + this.#preparing = true + try { + if (loading) + await loading + await this.#reset(time, generation, iteration) + } + catch (error) { + if (this.#current(generation) && this.#iteration === iteration) { + this.#release() + throw error + } + } + finally { + if (this.#current(generation) && this.#iteration === iteration) + this.#preparing = false + } + } + + async updateNextFrame(localId: number): Promise { + await this.#renderer.update(localId) + } + + render(): void { + this.#renderer.render() + } + + start(audio: { readonly currentTime: number }): void { + this.#renderer.start(audio) + } + + stop(): void { + this.#renderer.stop() + } + + async seek(time: number): Promise { + await this.resetIterator(time) + } + + setPlaybackRate(rate: number): void { + this.playbackRate = Math.max(0.1, Number(rate) || 1) + } + + destroy(): void { + if (this.#destroyed) + return + this.#destroyed = true + this.#generation++ + this.#renderer.destroy() + this.#poster.cancel() + this.#release() + this.posterDrawn = false + this.#createSink = null + this.#usedSink = null + this.videoSink = null + this.input = null + this.audioClock = null + } +} diff --git a/packages/artplayer-proxy-mediabunny/src/engine-ports.ts b/packages/artplayer-proxy-mediabunny/src/engine-ports.ts index 49d036ff3..bb298e454 100644 --- a/packages/artplayer-proxy-mediabunny/src/engine-ports.ts +++ b/packages/artplayer-proxy-mediabunny/src/engine-ports.ts @@ -18,6 +18,7 @@ export interface AudioPort { } export interface VideoPort { + cancelPending: () => void width: number height: number duration: number @@ -32,6 +33,7 @@ export interface VideoPort { } export interface VideoOptions { + onError?: (error: unknown) => void canvas: HTMLCanvasElement ctx: CanvasRenderingContext2D | null events: EventTarget diff --git a/packages/artplayer-proxy-mediabunny/src/video-frames.ts b/packages/artplayer-proxy-mediabunny/src/video-frames.ts new file mode 100644 index 000000000..e03adbffa --- /dev/null +++ b/packages/artplayer-proxy-mediabunny/src/video-frames.ts @@ -0,0 +1,37 @@ +import type { WrappedCanvas } from 'mediabunny' + +export type FrameIterator = Pick, 'next' | 'return'> +const closing = new WeakMap>() +const reading = new WeakMap>() + +export function releaseIterator(iterator: FrameIterator | null): Promise { + if (!iterator) + return Promise.resolve() + const previous = closing.get(iterator) + if (previous) + return previous + const pending = Promise.resolve().then(() => iterator.return()).then(() => {}) + closing.set(iterator, pending) + return pending +} + +export function readCanvas(iterator: FrameIterator): Promise { + const previous = reading.get(iterator) + if (previous) + return previous + const pending = Promise.resolve().then(() => iterator.next()).then(result => result.value ?? null) + reading.set(iterator, pending) + const clear = () => { + if (reading.get(iterator) === pending) + reading.delete(iterator) + } + pending.then(clear, clear) + return pending +} + +export function frameAction(timestamp: number, time: number, dropLateFrames: boolean, avSyncTolerance: number, playbackRate: number): 'skip' | 'draw' | 'queue' { + const tolerance = dropLateFrames ? Math.max(0.06, avSyncTolerance / Math.max(1, playbackRate)) : 0 + if (dropLateFrames && timestamp < time - tolerance) + return 'skip' + return timestamp <= time + tolerance ? 'draw' : 'queue' +} diff --git a/packages/artplayer-proxy-mediabunny/src/video-poster.ts b/packages/artplayer-proxy-mediabunny/src/video-poster.ts new file mode 100644 index 000000000..116fbdf10 --- /dev/null +++ b/packages/artplayer-proxy-mediabunny/src/video-poster.ts @@ -0,0 +1,33 @@ +export default class Poster { + private image: HTMLImageElement | null = null + + cancel(): void { + if (!this.image) + return + this.image.onload = null + this.image.onerror = null + this.image = null + } + + draw(source: string, current: () => boolean, draw: (image: HTMLImageElement) => void, failure: (error: unknown) => void): void { + this.cancel() + const image = new Image() + this.image = image + image.onload = () => { + if (this.image !== image || !current()) + return + this.cancel() + try { + draw(image) + } + catch (error) { + failure(error) + } + } + image.onerror = () => { + if (this.image === image) + this.cancel() + } + image.src = source + } +} diff --git a/packages/artplayer-proxy-mediabunny/src/video-renderer.ts b/packages/artplayer-proxy-mediabunny/src/video-renderer.ts new file mode 100644 index 000000000..830a79b60 --- /dev/null +++ b/packages/artplayer-proxy-mediabunny/src/video-renderer.ts @@ -0,0 +1,192 @@ +import type { WrappedCanvas } from 'mediabunny' +import type EventTarget from './EventTarget' +import type { FrameIterator } from './video-frames' +import { publish } from './readiness' +import { frameAction, readCanvas } from './video-frames' + +export interface RenderHost { + events: EventTarget + audioClock: { readonly currentTime: number } | null + videoIterator: FrameIterator | null + nextFrame: WrappedCanvas | null + rafId: number + asyncId: number + duration: number + lastTimeUpdate: number + timeupdateInterval: number + avSyncTolerance: number + dropLateFrames: boolean + playbackRate: number + stalled: boolean + isFetching: boolean +} + +export default class Renderer { + private stopped = false + private closed = false + private scheduled: number | null = null + private fetching: object | null = null + + constructor(private host: RenderHost, private ready: () => boolean, private draw: (frame: WrappedCanvas) => void, private failure: (error: unknown) => void) {} + + private current(id: number): boolean { + return !this.closed && !this.stopped && this.host.asyncId === id + } + + async update(id: number): Promise { + const iterator = this.host.videoIterator + if (!iterator || !this.ready() || !this.current(id) || this.host.isFetching) + return + const request = {} + this.fetching = request + this.host.isFetching = true + const current = () => this.current(id) && this.host.videoIterator === iterator + try { + while (current()) { + const frame = await readCanvas(iterator) + if (!current() || !frame) + return + const time = this.host.audioClock?.currentTime + if (time === undefined) + return + const action = frameAction(frame.timestamp, time, this.host.dropLateFrames, this.host.avSyncTolerance, this.host.playbackRate) + if (action === 'skip') + continue + if (action === 'draw') { + this.draw(frame) + } + else { + this.host.nextFrame = frame + return + } + } + } + catch (error) { + if (current()) + throw error + } + finally { + if (this.fetching === request) { + this.fetching = null + this.host.isFetching = false + } + } + } + + private request(id: number): void { + void this.update(id).catch((error) => { + if (!this.current(id)) + return + this.stop() + this.report(error) + }) + } + + private report(error: unknown): void { + try { + this.failure(error) + } + catch (failure) { + console.warn('MediaBunny video error listener:', failure) + } + } + + private cancelFrame(): void { + if (this.scheduled === null) + return + cancelAnimationFrame(this.scheduled) + this.scheduled = null + } + + private schedule(id: number): void { + if (!this.current(id)) + return + this.cancelFrame() + const frame = requestAnimationFrame(() => { + if (this.scheduled !== frame || !this.current(id)) + return + this.scheduled = null + try { + this.render() + } + catch (error) { + this.stop() + this.report(error) + } + }) + this.scheduled = frame + this.host.rafId = frame + } + + render(): void { + const id = this.host.asyncId + const current = () => this.current(id) + if (!current() || !this.host.audioClock) + return + const time = this.host.audioClock.currentTime + const now = Date.now() + if (now - this.host.lastTimeUpdate >= this.host.timeupdateInterval) { + this.host.events.emit('timeupdate') + if (!current()) + return + this.host.lastTimeUpdate = now + } + if (!this.ready()) { + this.schedule(id) + return + } + if (Number.isFinite(this.host.duration) && time >= this.host.duration) { + this.stop() + this.host.stalled = false + const ended = this.host.asyncId + publish(this.host.events, () => !this.closed && this.host.asyncId === ended, ['ended', 'pause', 'canplay']) + return + } + if (this.host.nextFrame && this.host.nextFrame.timestamp <= time) { + this.draw(this.host.nextFrame) + this.host.nextFrame = null + this.request(id) + if (this.host.stalled) { + publish(this.host.events, current, ['canplay', 'playing']) + if (!current()) + return + this.host.stalled = false + } + } + else if (!this.host.nextFrame) { + this.request(id) + if (Number.isFinite(this.host.duration) && time < this.host.duration && !this.host.stalled) { + this.host.stalled = true + this.host.events.emit('waiting') + } + } + this.schedule(id) + } + + start(clock: { readonly currentTime: number }): void { + if (this.closed) + return + this.stop() + this.stopped = false + this.host.audioClock = clock + this.host.stalled = false + if (!this.host.nextFrame) + this.request(this.host.asyncId) + this.schedule(this.host.asyncId) + } + + stop(): void { + this.stopped = true + this.host.asyncId++ + this.cancelFrame() + this.fetching = null + this.host.isFetching = false + } + + destroy(): void { + if (this.closed) + return + this.stop() + this.closed = true + } +} diff --git a/refactor/baselines/mb-video-source.json b/refactor/baselines/mb-video-source.json new file mode 100644 index 000000000..bb6774e07 --- /dev/null +++ b/refactor/baselines/mb-video-source.json @@ -0,0 +1,10 @@ +{ + "task": "PKG-MB-05", + "sourceCommit": "5d0b128483a78a5374bb7163adc1421ba6a4d4c8", + "sourceSha256LF": { + "packages/artplayer-proxy-mediabunny/src/VideoEngine.js": "5ac862b0fd9c196dc6656f8908a214c1b3a0a53a7e85ff845d9068888831986b", + "packages/artplayer-proxy-mediabunny/dist/artplayer-proxy-mediabunny.js": "01b88c915804e1c42b90c8c37aa948029472c7f47f6eb3a266629ed945be9fb1", + "node_modules/mediabunny/src/media-sink.ts": "9fbec4b6b0ec6c613d8f546fa91d8f14aac1c7c4a53ec7ed14b31319d43510f2" + }, + "sdkNote": "Installed 1.56.1 CanvasSink closes each VideoSample after drawing into its pooled canvas. Consumer owns the iterator return, not VideoFrame.close on WrappedCanvas." +} diff --git a/refactor/baselines/mb-video-validation.json b/refactor/baselines/mb-video-validation.json new file mode 100644 index 000000000..17bc7472a --- /dev/null +++ b/refactor/baselines/mb-video-validation.json @@ -0,0 +1,1243 @@ +{ + "task": "PKG-MB-05", + "status": "done", + "parentCommit": "5d0b128483a78a5374bb7163adc1421ba6a4d4c8", + "sourceSha256LF": { + "packages/artplayer-proxy-mediabunny/src/AudioEngine.d.ts": "2d59216f234173253b87e2b3ab8710efd25666f6cadbb2d1052b5c1cb829635a", + "packages/artplayer-proxy-mediabunny/src/AudioEngine.js": "910d6831372e4895d55dec78010f281a199bc88f99735630a5a3b621f192ac35", + "packages/artplayer-proxy-mediabunny/src/engine-ports.ts": "eabac444c7aeeb6026b654428868e72912c9591aabcbd70bdf1e3a85aeb8ebe3", + "packages/artplayer-proxy-mediabunny/src/engine-types.ts": "857a61f1fa3531bd737626658981eaab1b83eb369266fb45528676b9f57a293a", + 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"trackless-rejected-before-decoder-setup": 3, + "unsupported-capability-control": 10, + "native-pending-stream-cancellation": 9, + "native-synthetic-raf": 9, + "native-decoded-video-race": 10, + "native-mp4-playback-observed": 2, + "verified-unsupported-capability-control": 1 + }, + "records": [ + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "webm", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "blob", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "stream", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": true + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "audio", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "hls", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "trackless", + "outcome": "trackless-rejected-before-decoder-setup", + "cleanup": { + "audioContext": "not-created", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "webm", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "blob", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "stream", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": true + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "audio", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "hls", + "outcome": "native-input-playback-and-seek", + "cleanup": { + "audioContext": "closed", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "trackless", + "outcome": "trackless-rejected-before-decoder-setup", + "cleanup": { + "audioContext": "not-created", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "webm", + "outcome": "unsupported-capability-control", + "cleanup": { + "audioContext": "not-created", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "blob", + "outcome": "unsupported-capability-control", + "cleanup": { + "audioContext": "not-created", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "stream", + "outcome": "unsupported-capability-control", + "cleanup": { + "audioContext": "not-created", + "pendingFrames": 0, + "streamCancelled": true + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "audio", + "outcome": "unsupported-capability-control", + "cleanup": { + "audioContext": "not-created", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "hls", + "outcome": "unsupported-capability-control", + "cleanup": { + "audioContext": "not-created", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "input": "trackless", + "outcome": "trackless-rejected-before-decoder-setup", + "cleanup": { + "audioContext": "not-created", + "pendingFrames": 0, + "streamCancelled": false + }, + "scope": "Identified proxy with native browser media and controlled ArtPlayer host using actual core utilities/config; frame timestamps sampled against the SDK audio clock, not acoustic/long-run AV-sync acceptance. Cleanup checks settled playback, not pending-operation races. Candidate trackless rejection is checked separately before decoder setup; this is not full release acceptance." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "destroy", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "source", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "timeout", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "destroy", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "source", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "timeout", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "destroy", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "source", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "ending": "timeout", + "outcome": "native-pending-stream-cancellation", + "scope": "Real browser ReadableStream and actual SDK Input disposal before first media bytes; real timeout; controlled ArtPlayer host; does not assert decoder, late frame or audio-node cleanup." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "callback", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [ + { + "owner": "first", + "time": "number", + "mediaTime": 0, + "presentedFrames": 0 + } + ], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "destroy", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "independent", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [ + { + "owner": "second" + } + ], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "callback", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [ + { + "owner": "first", + "time": "number", + "mediaTime": 0, + "presentedFrames": 0 + } + ], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "destroy", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "independent", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [ + { + "owner": "second" + } + ], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "callback", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [ + { + "owner": "first", + "time": "number", + "mediaTime": 0, + "presentedFrames": 0 + } + ], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "destroy", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "independent", + "outcome": "native-synthetic-raf", + "result": { + "idType": "number", + "calls": [ + { + "owner": "second" + } + ], + "listeners": 0 + }, + "scope": "Real browser requestAnimationFrame and actual proxy instances; synthetic metadata is preserved, no decoding or video frame accuracy is claimed." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "pause-frame", + "outcome": "native-decoded-video-race", + "result": { + "before": 2, + "after": 2, + "paused": true, + "frames": 0 + }, + "state": { + "events": [ + "video:waiting", + "video:loadstart", + "video:loadedmetadata", + "video:durationchange", + "video:progress", + "video:loadeddata", + "video:canplay", + "video:canplaythrough", + "video:progress", + "video:play", + "video:playing", + "video:timeupdate", + "video:waiting", + "video:pause", + "destroy" + ], + "draws": 2, + "error": null, + "audioContext": "closed", + "frames": 0 + }, + "scope": "Actual SDK MP4 decoding and browser clock/RAF; frame delivery or two raw VideoSample deliveries before CanvasSink conversion control interleaving. 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Source/seek ownership, pause and timeupdate reentry verified; not long-run AV sync or a mock codec." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "seek-newer", + "outcome": "native-decoded-video-race", + "result": { + "before": 2, + "after": 2, + "heldReads": 1, + "currentIteratorKept": true, + "frames": 0, + "time": 5, + "error": null + }, + "state": { + "events": [ + "video:waiting", + "video:loadstart", + "video:loadedmetadata", + "video:durationchange", + "video:progress", + "video:loadeddata", + "video:canplay", + "video:canplaythrough", + "video:progress", + "video:seeking", + "video:waiting", + "video:seeking", + "video:waiting", + "video:seeked", + "destroy" + ], + "draws": 2, + "error": null, + "audioContext": "closed", + "frames": 0 + }, + "scope": "Actual SDK MP4 decoding and browser clock/RAF; frame delivery or two raw VideoSample deliveries before CanvasSink conversion control interleaving. 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Source/seek ownership, pause and timeupdate reentry verified; not long-run AV sync or a mock codec." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "pause-frame", + "outcome": "unsupported-capability-control", + "state": { + "events": [ + "video:error", + "destroy" + ], + "draws": 0, + "error": { + "code": 4, + "message": "undefined is not a constructor (evaluating 'new t')" + }, + "audioContext": "not-created", + "frames": 0 + }, + "scope": "Actual SDK MP4 decoding and browser clock/RAF; frame delivery or two raw VideoSample deliveries before CanvasSink conversion control interleaving. Source/seek ownership, pause and timeupdate reentry verified; not long-run AV sync or a mock codec." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "seek-source", + "outcome": "unsupported-capability-control", + "state": { + "events": [ + "video:waiting", + "video:loadstart", + "video:error", + "destroy" + ], + "draws": 0, + "error": { + "code": 4, + "message": "undefined is not a constructor (evaluating 'new t')" + }, + "audioContext": "not-created", + "frames": 0 + }, + "scope": "Actual SDK MP4 decoding and browser clock/RAF; frame delivery or two raw VideoSample deliveries before CanvasSink conversion control interleaving. Source/seek ownership, pause and timeupdate reentry verified; not long-run AV sync or a mock codec." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "seek-newer", + "outcome": "unsupported-capability-control", + "state": { + "events": [ + "video:waiting", + "video:loadstart", + "video:error", + "destroy" + ], + "draws": 0, + "error": { + "code": 4, + "message": "undefined is not a constructor (evaluating 'new t')" + }, + "audioContext": "not-created", + "frames": 0 + }, + "scope": "Actual SDK MP4 decoding and browser clock/RAF; frame delivery or two raw VideoSample deliveries before CanvasSink conversion control interleaving. Source/seek ownership, pause and timeupdate reentry verified; not long-run AV sync or a mock codec." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "timeupdate-pause", + "outcome": "unsupported-capability-control", + "state": { + "events": [ + "video:waiting", + "video:loadstart", + "video:error", + "destroy" + ], + "draws": 0, + "error": { + "code": 4, + "message": "undefined is not a constructor (evaluating 'new t')" + }, + "audioContext": "not-created", + "frames": 0 + }, + "scope": "Actual SDK MP4 decoding and browser clock/RAF; frame delivery or two raw VideoSample deliveries before CanvasSink conversion control interleaving. Source/seek ownership, pause and timeupdate reentry verified; not long-run AV sync or a mock codec." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "scenario": "seek-pool", + "outcome": "unsupported-capability-control", + "state": { + "events": [ + "video:waiting", + "video:loadstart", + "video:error", + "destroy" + ], + "draws": 0, + "error": { + "code": 4, + "message": "undefined is not a constructor (evaluating 'new t')" + }, + "audioContext": "not-created", + "frames": 0 + }, + "scope": "Actual SDK MP4 decoding and browser clock/RAF; frame delivery or two raw VideoSample deliveries before CanvasSink conversion control interleaving. Source/seek ownership, pause and timeupdate reentry verified; not long-run AV sync or a mock codec." + }, + { + "project": "chromium", + "browser": "153.0.8010.12", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "outcome": "native-mp4-playback-observed", + "scope": "Identified published or candidate proxy with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No HLS or long-run AV-sync acceptance." + }, + { + "project": "firefox", + "browser": "155.0", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "outcome": "native-mp4-playback-observed", + "scope": "Identified published or candidate proxy with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No HLS or long-run AV-sync acceptance." + }, + { + "project": "webkit", + "browser": "26.6", + "platform": "win32", + "implementation": "candidate-artifact", + "sha256": "9c89a729197593ffcab11b64813b312f588f5515d2cb8acb0537d0a389a5209c", + "outcome": "verified-unsupported-capability-control", + "scope": "Identified published or candidate proxy with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No HLS or long-run AV-sync acceptance." + } + ], + "poolBeforeFix": { + "failedPixelChecks": 2, + "passedCapabilityControls": 1, + "report": "refactor/.cache/mb05-pool-before-results/report.json", + "reportSha256": "36a712a6a941d8eb7176d00d2c633d4be8d4b89ea8288c40c105b011af363c97", + "results": "refactor/.cache/mb05-pool-before-results/results" + }, + "report": "refactor/.cache/mb05-video-terminal-results/report.json", + "reportSha256": "9346e4cf7e4a53fb8ca6ce7600198f5db4e518ef40f72b19df2ebb5d331c88aa", + "results": "refactor/.cache/mb05-video-terminal-results/results", + "sameNativeAssertionsOnPreviousMain": { + "passedCapabilityControls": 5, + "failedNativeRaces": 10, + "report": "refactor/.cache/mb05-video-frozen-terminal-results/report.json", + "reportSha256": "ad8319c1618f54b9df7d40ec5f681d17abc72147db8ead1da66eb9977be4d908", + "results": "refactor/.cache/mb05-video-frozen-terminal-results/results" + } + }, + "checks": [ + { + "command": "yarn test:mediabunny", + "result": "pass", + "tests": 146 + }, + { + "command": "main/legacy shim, coordinator, load and video tests", + "result": "pass", + "eachRun": 110 + }, + { + "command": "same video assertions on frozen main", + "result": "expected historical failures", + "passed": 7, + "failed": 31 + }, + { + "command": "package strict tsc and focused eslint", + "result": "pass", + "productionTypeScriptModules": 20, + "temporaryAudioDeclarationBridges": 1 + }, + { + "command": "three format build and ESM factory", + "result": "pass" + }, + { + "command": "five browser specs on final built main", + "result": "pass", + "tests": 54 + }, + { + "command": "yarn ci:check", + "result": "pass", + "tests": { + "unit": 1152, + "engineering": 14, + "baseline": 141, + "mainTotal": 1307, + "repeatedContractExecutions": 44 + }, + "strictProductionTypeScriptFiles": 310, + "log": "refactor/.cache/mb05-video-ci.log" + } + ], + "limitations": [ + "AudioEngine remains JS behind an explicit declaration bridge; audio-node/clock ownership is MB-06.", + "Ten native frame races use actual decoded frames or raw samples with controlled delivery delay; not long-run AV sync.", + "Eleven Windows WebKit capability controls are not playback; no general Safari claim.", + "Existing undecodable-track fallback and readiness need MB-CAP-01/MB-READY-01 review.", + "HLS UI and full concurrent selection topology remain MB-07.", + "Cleanup invokes and observes SDK iterator return without waiting for an obsolete read; the SDK controls underlying decoder completion.", + "No npm release acceptance is implied." + ], + "postCiVerification": { + "runtimeSourceUnchanged": true, + "browserTeardownWaiter": "Wait for asynchronous AudioContext close within the existing expect timeout; no production change", + "checks": [ + "focused eslint --no-fix", + "54 final browser cases", + "15 frozen browser controls" + ], + "logs": [ + "refactor/.cache/mb05-video-lint.log", + "refactor/.cache/mb05-video-browser-terminal.log", + "refactor/.cache/mb05-video-browser-frozen-terminal.log" + ] + } +} diff --git a/refactor/changes/2026-09-12-PKG-MB-05-video.md b/refactor/changes/2026-09-12-PKG-MB-05-video.md new file mode 100644 index 000000000..72046899e --- /dev/null +++ b/refactor/changes/2026-09-12-PKG-MB-05-video.md @@ -0,0 +1,80 @@ +# PKG-MB-05：视频迭代器、seek、晚帧与RAF + +任务通过完整CI后标记done，并立即以专用本地提交交付。冻结来源为5d0b1284，源码与实际main哈希见 +mb-video-source.json；SDK仍为已锁定MediaBunny 1.56.1，未升级依赖。 + +## 实际实现 + +VideoEngine.js已迁移为严格TS并删除VideoEngine.d.ts桥。拆出video-frames.ts、 +video-renderer.ts、video-poster.ts，包内共20个生产TS模块；仅AudioEngine.d.ts仍是 +显式的临时JS边界。ARCHITECTURE.md记录文件地图和状态/资源归属。 + +- source/load、seek迭代和render活动分别拥有身份；旧load、第一/第二seek帧、能力查询和 + 异步frame读取结果不得覆盖新source或seek。新source开始解析时即取消旧视频操作。 +- 加载能力检测期间seek等待该加载，不能把合法metadata一起取消；暂停状态的正常seek + 仍显示目标第一帧并保留第二帧。load/reset不等待废弃迭代器无限期返回。 +- 迭代器先同步脱离当前字段，再观察return；每个迭代器只释放一次。stop/start对同一 + pending next共享读取，旧finally不清掉新fetch状态。 +- RAF每实例单一归属，ID 0有效；暂停、销毁与事件回调重入后不再排程旧任务。 + 未创建RAF的实例不能取消其他实例的ID 0。正常timeupdate/ended/stall事件顺序保持。 +- 海报请求有源身份和请求身份，替换、真正绘制帧、销毁时解除回调。 +- 活动后台解码失败停止渲染并通过协调器报告一次MediaError，音频清理异常不覆盖原错误。 + 后台iterator return拒绝有观察和警告；显式stopIterator保持Promise拒绝。 +- 无2D context时在实际使用阶段报明确错误，替代旧的空值TypeError；不会伪造就绪。 + +默认dropLateFrames=false、容差/倍速公式、CanvasSink poolSize=2、contain、透明度保持。 +SDK的CanvasSink把VideoSample画入池化canvas后自行close；代理负责迭代器，不对WrappedCanvas +调用VideoFrame.close，不增加每帧拷贝。公开factory/类型/Canvas门面与三种产物入口保持。 + +## 证据 + +38项新视频断言对5d0b1284实际main为7通过/31失败；候选全部通过。包专项146项通过。 +main/legacy各110项通过，106候选断言+4冻结正常对照。三格式构建与严格类型检查通过。 +最终浏览器结果归档并记录在mb-video-validation.json。54项由12普通真实播放、10真实 +解码帧竞态、9原生Stream取消、9synthetic RAF、11Windows WebKit能力对照、3无轨道拒绝组成。 +其中10个新竞态场景对旧main全部失败，另5能力对照通过；失败trace与报告完整保留。 +新场景使用实际SDK解析/解码、实际CanvasSink帧和浏览器时钟，只延迟一帧的交付来控制 +暂停/连续seek/切源时序。timeupdate回调暂停检查真实RAF，不是mock codec或纯事件出口测试。 + +开发时修正了测试宿主：控制音频seek来隔离视频测试；两个实例的RAF测试直接创建两个实际 +VideoEngine，避免测试helper重复返回同一canvas。旧32项测试中25失败，扩展到37项后30失败。 +初始复现读取必须在下一次返回done，避免旧实现缺陷造成测试自身无限循环；没有扩大超时。 + +## 后续 + +MB-06继续实际音频解码、时钟与节点释放；MB-07继续并发HLS选轨和UI拓扑；MB-08完善 +消费者声明矩阵。MB-09仍需要长播放、AV同步和完整核心/插件/设备组合。既有轨道但不可解码 +时的fallback还需MB-CAP-01/MB-READY-01评审，不以这次晚帧修复宣布所有能力问题已关闭。 +MPL通知、8082示例与真实安装包在MB-10；未推送、打tag或发布。 + +最终复核另复现了启动预取覆盖已排队第二帧，修复为消费该帧后再取下一帧，保持默认 +不丢帧意图及容差策略。新增第38项回归，旧main为7通过/31失败。首轮完整CI1306通过 +之后因这项实际源码修复重新构建、验证产物/浏览器并运行完整CI，不复用旧的绿色结果。 + +进一步使用两个实际解码VideoSample在进入CanvasSink池化转换前暂停交付，连续seek +1→3→5后释放旧样本：当前帧timestamp仍属于5秒，但排队canvas像素校验从1220654181 +变成2730873815。此缺陷在已通过第二轮CI的实现上也复现，报告为mb05-pool-before-results。 +已改为每个seek独立CanvasSink池（仍2个canvas，无每帧拷贝），保留公开canvas实例； +内部sink身份可变化。对应浏览器测试跟踪SDK原型以覆盖新sink，而非绑定一次旧实例。 +修复后像素稳定；最终54项浏览器及对应旧main15项对照另行归档。 + +构建中两次发生Windows copyfile UNKNOWN，仅覆盖已有docs/compiled legacy目标失败； +源码和目标读取、r+打开及复制到cache均成功，磁盘空间充足。备份并移除该可再生目标， +由正常yarn build重新生成后三格式构建成功，没有手改产物内容或扩大文件删除范围。 +首次54项浏览器所用main与重新完整构建的main哈希相同，仍有效；legacy重新运行110项检查。 + +进一步补充新迭代器保持断言：Firefox旧切源在某次运行中未多画旧帧，却已被旧清理 +清空新迭代器，原画面断言不足以发现。新增断言后最终旧main10个原生竞态均失败， +5个能力对照通过；先前9失败/6通过报告另存，不把同一副作用的不同调度结果隐去。 + +最终浏览器清理断言改为按现有expect超时等待AudioContext真实closed状态；close本来是 +异步操作，固定两帧不足以判定失败。此处只调整测试等待，生产代码未改。末次完整CI +1307项覆盖最终生产源码；之后单独重跑浏览器spec lint和全部54浏览器用例。旧main +同样重跑15项以保留清理后的原始视频断言结论，未提高超时或跳过失败。 + +最终完整CI1307项（1152单元+14工程+141基线）通过，另44重复契约；310生产TS。 +源码、测试、产物与报告哈希已核验，三格式docs/compiled与dist逐字节一致。 +38视频断言在旧main为7通过/31失败；最终包专项146、main/legacy各110、浏览器54均通过。 +旧产物10个原生帧竞态失败均为绘制计数、帧像素、迭代器保留或RAF状态断言，不是超时：暂停后绘制2→10， +旧seek结果在新seek/source后绘制2→3，timeupdate暂停后残留1个RAF；候选均无此残留。 +回退可revert专用提交，原始5d0b1284及基线保持可追溯。下一项PKG-MB-06继续音频引擎。 diff --git a/refactor/mb-validation.md b/refactor/mb-validation.md index f998abfa0..ef28d28fb 100644 --- a/refactor/mb-validation.md +++ b/refactor/mb-validation.md @@ -54,3 +54,10 @@ VideoShim/EventTarget与主协调器已拆为严格TS模块，详情见 无轨道容器由历史readyState 4改为code 4错误；有效媒体的正常顺序保持，重复就绪和 失效操作结果被阻止。不要把synthetic RAF、受控竞态或Windows WebKit能力对照计为真实播放。 音视频解码器仍通过两个显式声明桥连接，MB-05/06继续实际实现迁移和底层晚操作清理。 + +## MB-05 video ownership + +VideoEngine与迭代器/渲染/海报职责已实际迁移TS，删除视频声明桥；只剩音频声明桥。 +执行yarn test:mediabunny及新增mediabunny-video.spec.js，按实际报告区分普通播放、 +真实帧竞态、能力对照和synthetic RAF。[变更](changes/2026-09-12-PKG-MB-05-video.md)与 +[验证](baselines/mb-video-validation.json)记录38个新断言、旧产物复现及真实解码场景。 diff --git a/refactor/plan.md b/refactor/plan.md index 0bcc32b03..15eeb99e0 100644 --- a/refactor/plan.md +++ b/refactor/plan.md @@ -4,7 +4,7 @@ 基线：`40fcda6a37d0049d42e49c1e64e70d4fd9ba5f7f`。总任务 222 项，范围 22 个包及工作区/示例。 -状态：todo 114 / doing 7 / blocked 0 / done 101 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。 +状态：todo 113 / doing 7 / blocked 0 / done 102 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。 前置依赖是启动条件；验收是完成条件。任务可以继续拆分，但不能复用或悄悄删除旧 ID。 @@ -333,7 +333,7 @@ | PKG-MB-02 | artplayer-proxy-mediabunny
建立真实媒体与事件基线 | PKG-MB-01, ENG-05, ENG-08 | MP4/WebM/HLS/Blob/Stream、seek/错误/轨道切换样本 | ready 事件顺序、音画同步、超时和释放可重跑 | H | done | | PKG-MB-03 | artplayer-proxy-mediabunny
整理 input 与加载取消 | PKG-MB-02, CORE-09 | input.js 源检测、输入资源、Range 与取消 | HLS 检测在 input 边界，旧来源类型和超时保持 | H | done | | PKG-MB-04 | artplayer-proxy-mediabunny
整理 VideoShim/EventTarget/Engine 协调 | PKG-MB-03, CORE-06, CORE-11 | shim 描述符、事件桥、加载状态和操作隔离 | 公开属性/同步异步返回与事件重入顺序保持 | H | done | -| PKG-MB-05 | artplayer-proxy-mediabunny
整理视频解码、seek 和帧释放 | PKG-MB-04 | VideoEngine 调度、队列、晚帧处理和资源释放 | 暂停/seek/切源无旧帧覆盖，默认丢帧策略不变 | H | todo | +| PKG-MB-05 | artplayer-proxy-mediabunny
整理视频解码、seek 和帧释放 | PKG-MB-04 | VideoEngine 调度、队列、晚帧处理和资源释放 | 暂停/seek/切源无旧帧覆盖，默认丢帧策略不变 | H | done | | PKG-MB-06 | artplayer-proxy-mediabunny
整理音频解码、时钟与同步 | PKG-MB-04 | AudioEngine 时钟、缓冲和 AudioContext 归属 | AV sync、倍速、无音轨、静音/音量和暂停恢复通过 | H | todo | | PKG-MB-07 | artplayer-proxy-mediabunny
整理 HLS 配对轨道与 selector | PKG-MB-05, PKG-MB-06, CORE-14 | m3u8 配对、质量/音频选择及拓扑清理 | 实际选择高亮、切到无轨道来源清理、无重复 readiness | H | todo | | PKG-MB-08 | artplayer-proxy-mediabunny
完成 TS 与媒体能力声明 | PKG-MB-07, ENG-04, ENG-06 | 8 个自有 JS 模块迁移与 Result/shim 类型 | 解码器/Stream/DOM 类型清楚，旧 Option 和 art.mediabunny 使用保持 | H | todo | @@ -524,4 +524,5 @@ - PKG-MB-02: [记录](changes/2026-09-12-PKG-MB-02-checkpoint.md) [记录](baselines/mb-media-checkpoint.json) [记录](mb-validation.md) [记录](changes/2026-09-12-PKG-MB-02-baseline.md) [记录](baselines/mb-behavior-validation.json) - PKG-MB-03: [记录](changes/2026-09-12-PKG-MB-03-input.md) [记录](baselines/mb-input-validation.json) - PKG-MB-04: [记录](baselines/mb-coordination-source.json) [记录](changes/2026-09-12-PKG-MB-04-shim-checkpoint.md) [记录](baselines/mb-shim-checkpoint.json) [记录](changes/2026-09-12-PKG-MB-04-coordination.md) [记录](baselines/mb-coordination-validation.json) +- PKG-MB-05: [记录](baselines/mb-video-source.json) [记录](changes/2026-09-12-PKG-MB-05-video.md) [记录](baselines/mb-video-validation.json) - PKG-FACTORY-01: [记录](baselines/factory-assignment-gaps.json) [记录](baselines/factory-compatibility-proposals.json) [记录](factory-compatibility-decision.md) [记录](changes/2026-09-12-PKG-FACTORY-01-decision.md) diff --git a/refactor/progress.md b/refactor/progress.md index c506aa6fd..e85f4ec28 100644 --- a/refactor/progress.md +++ b/refactor/progress.md @@ -1,5 +1,19 @@ # 进度与证据 +## PKG-MB-05完成：视频迭代器、seek、晚帧与RAF + +VideoEngine实际迁移TS，拆出frame读取/释放、renderer与poster职责，删除视频声明桥。 +新source立即取消旧视频操作；seek与加载、暂停分别管理，旧帧不覆盖新状态；单实例RAF +与海报回调有清理；保留默认丢帧策略并修复启动预取覆盖第二帧，以及多seek共享 +Canvas池导致排队帧像素被旧样本改写。包内20生产TS， +只剩AudioEngine显式声明桥。38项新断言对旧main7通过/31失败、候选全通过；包专项 +146、main/legacy各110通过。最终54浏览器：12普通播放+10真实解码帧竞态+9Stream +取消+9synthetic RAF+11能力对照+3无轨道拒绝。旧main10项真实帧竞态全部失败， +候选全部通过，完整报告/trace归档。最终完整CI1307通过，另44重复契约，310生产TS。 +见[变更](changes/2026-09-12-PKG-MB-05-video.md)及[证据](baselines/mb-video-validation.json)。 +222项：102 done、7 doing、113 todo；立即专用本地提交，下一项MB-06音频引擎。 +音频、HLS拓扑、长播放/AV同步与codec能力剩余项继续，不构成npm发布验收。 + ## PKG-MB-04完成：主协调器TS与操作隔离 MediaBunnyEngine实际迁移TS，并拆分playback/readiness/HLS查询职责；正常接口和事件顺序 diff --git a/refactor/risks.json b/refactor/risks.json index 2db8fb710..7a9fefb3d 100644 --- a/refactor/risks.json +++ b/refactor/risks.json @@ -3648,7 +3648,7 @@ "PKG-MB-07", "PKG-MB-09" ], - "compatibleResolution": "Reproduce pending operations and destroy/source-switch races before migrating each owner; preserve public event and promise behavior while preventing stale resource use. MB-02 now reproduces late load rejection and uncancelled waiting/loadstart timers after destroy in all three historical implementations using a controlled host. Other interleavings and full-core native behavior are not yet verified. Expanded MB-02 baseline reproduces play-after-pause/destroy, rejected-play false state, seek-after-destroy and retained successful-load timeout timers in all three actual historical implementations; Range and active-timeout normal controls remain separate. MB-03 candidate owns pending Input before track selection and cancels load/HEAD/timers on source replacement, timeout and destroy; source/main/legacy regressions pass. Pending play/seek, late decoder work and full readiness coordination remain MB-04/05/06, so this risk stays open. MB-04 shim checkpoint fixes synthetic RAF retention and terminal event-listener cleanup, including engine cleanup exceptions. Closing the event bridge does not prove pending engine operations stopped; coordination remains in progress. MB-04 now guards play/seek/replacement completion, preserves explicit pause, observes stale failures and isolates reentrant event sequences. Decoder-internal late frames/audio and HLS UI races remain MB-05/06/07; risk stays open.", + "compatibleResolution": "Reproduce pending operations and destroy/source-switch races before migrating each owner; preserve public event and promise behavior while preventing stale resource use. MB-02 now reproduces late load rejection and uncancelled waiting/loadstart timers after destroy in all three historical implementations using a controlled host. Other interleavings and full-core native behavior are not yet verified. Expanded MB-02 baseline reproduces play-after-pause/destroy, rejected-play false state, seek-after-destroy and retained successful-load timeout timers in all three actual historical implementations; Range and active-timeout normal controls remain separate. MB-03 candidate owns pending Input before track selection and cancels load/HEAD/timers on source replacement, timeout and destroy; source/main/legacy regressions pass. Pending play/seek, late decoder work and full readiness coordination remain MB-04/05/06, so this risk stays open. MB-04 shim checkpoint fixes synthetic RAF retention and terminal event-listener cleanup, including engine cleanup exceptions. Closing the event bridge does not prove pending engine operations stopped; coordination remains in progress. MB-04 now guards play/seek/replacement completion, preserves explicit pause, observes stale failures and isolates reentrant event sequences. Decoder-internal late frames/audio and HLS UI races remain MB-05/06/07; risk stays open. MB-05 migrates VideoEngine and owns iterators, late first/second seek frames, pending reads, per-instance RAF and poster callbacks; same native race assertions fail on old main and pass on candidate. Independent CanvasSink pools also prevent multiple obsolete seek samples from overwriting queued current-frame pixels. Audio nodes, long-run AV sync and HLS UI topology remain MB-06/07/09.", "closureCriteria": "Historical failing interleavings and candidate cancellation/cleanup pass with real media and event evidence, including long playback and track topology.", "status": "open", "evidence": [ @@ -3662,7 +3662,9 @@ "refactor/changes/2026-09-12-PKG-MB-03-input.md", "refactor/changes/2026-09-12-PKG-MB-04-shim-checkpoint.md", "refactor/changes/2026-09-12-PKG-MB-04-coordination.md", - "refactor/baselines/mb-coordination-validation.json" + "refactor/baselines/mb-coordination-validation.json", + "refactor/changes/2026-09-12-PKG-MB-05-video.md", + "refactor/baselines/mb-video-validation.json" ] }, { diff --git a/refactor/tasks.json b/refactor/tasks.json index d62558e1c..824bef580 100644 --- a/refactor/tasks.json +++ b/refactor/tasks.json @@ -3482,11 +3482,15 @@ "dependsOn": [ "PKG-MB-04" ], - "status": "todo", + "status": "done", "risk": "H", "deliverable": "VideoEngine 调度、队列、晚帧处理和资源释放", "acceptance": "暂停/seek/切源无旧帧覆盖，默认丢帧策略不变", - "evidence": [] + "evidence": [ + "baselines/mb-video-source.json", + "changes/2026-09-12-PKG-MB-05-video.md", + "baselines/mb-video-validation.json" + ] }, { "id": "PKG-MB-06", diff --git a/test/browser/mediabunny-inputs.spec.js b/test/browser/mediabunny-inputs.spec.js index 7e6e615e0..45726deb4 100644 --- a/test/browser/mediabunny-inputs.spec.js +++ b/test/browser/mediabunny-inputs.spec.js @@ -145,9 +145,10 @@ for (const implementation of implementations) { const video = canvas.engine.video if (video.videoSink) { const times = new WeakMap() - const canvases = video.videoSink.canvases.bind(video.videoSink) - video.videoSink.canvases = (...args) => { - const iterator = canvases(...args) + const prototype = Object.getPrototypeOf(video.videoSink) + const canvases = prototype.canvases + prototype.canvases = function (...args) { + const iterator = canvases.apply(this, args) const next = iterator.next.bind(iterator) iterator.next = async (...values) => { const result = await next(...values) diff --git a/test/browser/mediabunny-video.spec.js b/test/browser/mediabunny-video.spec.js new file mode 100644 index 000000000..fe7995c80 --- /dev/null +++ b/test/browser/mediabunny-video.spec.js @@ -0,0 +1,218 @@ +import { hash } from '../../refactor/scripts/releases.mjs' +import { mbCandidate } from '../helpers/mediabunny.js' +import { expect, test } from './fixtures.js' + +const implementation = await mbCandidate() +for (const scenario of ['pause-frame', 'seek-source', 'seek-newer', 'timeupdate-pause', 'seek-pool']) { + test(`MediaBunny ${implementation.name}: native video ownership ${scenario}`, async ({ page, browserName }, testInfo) => { + await page.goto('/test/player.html?core=published') + await page.addScriptTag({ content: `(() => { const module = { exports: {} }; const exports = module.exports; + ${implementation.code}; window.mbFactory = module.exports.default || module.exports; })();` }) + let outcome = 'unverified' + let result + await page.evaluate(async () => { + const listeners = new Map() + window.mbEvents = [] + window.mbDraws = [] + window.mbFrames = new Set() + const raf = requestAnimationFrame.bind(window) + const cancel = cancelAnimationFrame.bind(window) + window.mbFlush = () => new Promise(resolve => raf(() => raf(resolve))) + window.requestAnimationFrame = (callback) => { + const id = raf((time) => { + window.mbFrames.delete(id) + callback(time) + }) + window.mbFrames.add(id) + return id + } + window.cancelAnimationFrame = (id) => { + window.mbFrames.delete(id) + cancel(id) + } + window.mbHost = { + constructor: window.Artplayer, + option: { url: '', autoSize: false }, + template: { $player: document.querySelector('.player') }, + on(name, callback) { + const list = listeners.get(name) || [] + list.push(callback) + listeners.set(name, list) + }, + emit(name, ...args) { + window.mbEvents.push(name) + for (const callback of listeners.get(name) || []) callback(...args) + }, + } + window.mbCanvas = window.mbFactory()(window.mbHost) + const context = window.mbCanvas.engine.video.ctx + const draw = context.drawImage.bind(context) + context.drawImage = (...args) => { + window.mbDraws.push({ time: window.mbCanvas.currentTime, paused: window.mbCanvas.paused }) + return draw(...args) + } + await window.mbCanvas.engine.load('/test/pattern.mp4') + const button = document.createElement('button') + button.id = 'mb-play' + button.textContent = 'Play' + button.onclick = () => { + window.mbPlay = window.mbCanvas.play() + } + document.body.append(button) + window.mbHold = (iterator) => { + const next = iterator.next.bind(iterator) + let first = true + iterator.next = async (...args) => { + const value = await next(...args) + if (first) { + first = false + window.mbHeldTimestamp = value.value?.timestamp + window.mbHeldReads = 1 + return new Promise((resolve) => { + window.mbRelease = () => resolve(value) + }) + } + window.mbHeldReads++ + return value + } + return iterator + } + }) + try { + const capabilities = await page.evaluate(() => ({ VideoDecoder: typeof VideoDecoder, AudioContext: typeof AudioContext, webkitAudioContext: typeof window.webkitAudioContext })) + if (capabilities.AudioContext === 'undefined' && capabilities.webkitAudioContext === 'undefined') { + expect(browserName).toBe('webkit') + expect(capabilities.VideoDecoder).toBe('undefined') + expect(await page.evaluate(() => window.mbCanvas.error?.code)).toBe(4) + expect(await page.evaluate(() => window.mbCanvas.readyState)).toBeLessThan(4) + outcome = 'unsupported-capability-control' + return + } + expect(await page.evaluate(() => window.mbCanvas.error)).toBeNull() + expect(await page.evaluate(() => window.mbCanvas.readyState)).toBe(4) + expect(await page.evaluate(() => [window.mbCanvas.videoWidth, window.mbCanvas.videoHeight])).toEqual([320, 180]) + if (scenario === 'pause-frame') { + await page.evaluate(() => window.mbHold(window.mbCanvas.engine.video.videoIterator)) + await page.click('#mb-play') + await expect.poll(() => page.evaluate(() => typeof window.mbRelease)).toBe('function') + await expect.poll(() => page.evaluate(() => window.mbCanvas.currentTime > window.mbHeldTimestamp + 0.1)).toBe(true) + result = await page.evaluate(async () => { + window.mbCanvas.pause() + const before = window.mbDraws.length + window.mbRelease() + await window.mbPlay + await window.mbFlush() + return { before, after: window.mbDraws.length, paused: window.mbCanvas.paused, frames: window.mbFrames.size } + }) + expect(result.after).toBe(result.before) + expect(result.paused).toBe(true) + expect(result.frames).toBe(0) + } + else if (scenario === 'seek-pool') { + await page.evaluate(() => { + const prototype = Object.getPrototypeOf(window.mbCanvas.engine.video.videoSink._videoSampleSink) + const samples = prototype.samples + window.mbSampleReleases = {} + prototype.samples = function (...args) { + const iterator = samples.apply(this, args) + const next = iterator.next.bind(iterator) + let first = true + iterator.next = async (...values) => { + const result = await next(...values) + if (first && [1, 3].includes(args[0]) && !result.done) { + first = false + return new Promise((resolve) => { + window.mbSampleReleases[args[0]] = () => resolve(result) + }) + } + return result + } + return iterator + } + window.mbOldFirst = window.mbCanvas.engine.seek(1) + }) + await expect.poll(() => page.evaluate(() => typeof window.mbSampleReleases[1])).toBe('function') + await page.evaluate(() => { + window.mbOldSecond = window.mbCanvas.engine.seek(3) + }) + await expect.poll(() => page.evaluate(() => typeof window.mbSampleReleases[3])).toBe('function') + result = await page.evaluate(async () => { + await window.mbCanvas.engine.seek(5) + const frame = window.mbCanvas.engine.video.nextFrame + const fingerprint = () => { + let hash = 2166136261 + for (const value of frame.canvas.getContext('2d').getImageData(0, 0, frame.canvas.width, frame.canvas.height).data) + hash = Math.imul(hash ^ value, 16777619) >>> 0 + return hash + } + const before = fingerprint() + window.mbSampleReleases[1]() + window.mbSampleReleases[3]() + await Promise.all([window.mbOldFirst, window.mbOldSecond]) + await window.mbFlush() + return { before, after: fingerprint(), timestamp: frame.timestamp, currentFrameUnchanged: frame === window.mbCanvas.engine.video.nextFrame, time: window.mbCanvas.currentTime } + }) + expect(result.after).toBe(result.before) + expect(result.currentFrameUnchanged).toBe(true) + expect(result.timestamp).toBeGreaterThan(5) + expect(result.time).toBe(5) + } + else if (scenario.startsWith('seek-')) { + await page.evaluate(() => { + const prototype = Object.getPrototypeOf(window.mbCanvas.engine.video.videoSink) + const canvases = prototype.canvases + prototype.canvases = function (...args) { + const iterator = canvases.apply(this, args) + return args[0] === 3 ? window.mbHold(iterator) : iterator + } + window.mbSeek = window.mbCanvas.engine.seek(3) + }) + await expect.poll(() => page.evaluate(() => typeof window.mbRelease)).toBe('function') + result = await page.evaluate(async (scenario) => { + if (scenario === 'seek-source') + await window.mbCanvas.engine.load('/test/pattern.mp4?replacement=1') + else await window.mbCanvas.engine.seek(5) + const iterator = window.mbCanvas.engine.video.videoIterator + const before = window.mbDraws.length + window.mbRelease() + await window.mbSeek + await window.mbFlush() + return { before, after: window.mbDraws.length, heldReads: window.mbHeldReads, currentIteratorKept: Boolean(iterator) && iterator === window.mbCanvas.engine.video.videoIterator, frames: window.mbFrames.size, time: window.mbCanvas.currentTime, error: window.mbCanvas.error } + }, scenario) + expect(result.after).toBe(result.before) + expect(result.heldReads).toBe(1) + expect(result.currentIteratorKept).toBe(true) + expect(result.frames).toBe(0) + expect(result.error).toBeNull() + expect(result.time).toBe(scenario === 'seek-source' ? 0 : 5) + } + else { + await page.evaluate(() => window.mbCanvas.events.addEventListener('timeupdate', () => window.mbCanvas.pause())) + await page.click('#mb-play') + await expect.poll(() => page.evaluate(() => window.mbEvents.includes('video:timeupdate'))).toBe(true) + result = await page.evaluate(async () => { + await window.mbFlush() + return { paused: window.mbCanvas.paused, frames: window.mbFrames.size } + }) + expect(result).toEqual({ paused: true, frames: 0 }) + } + outcome = 'native-decoded-video-race' + } + finally { + const state = await page.evaluate(async () => { + const canvas = window.mbCanvas + window.mbRelease?.() + for (const release of Object.values(window.mbSampleReleases || {})) release() + const context = canvas.engine.audio.audioContext + window.mbCleanupContext = context + window.mbHost.emit('destroy') + await window.mbFlush() + return { events: window.mbEvents, draws: window.mbDraws.length, error: canvas.error, audioContext: context?.state || 'not-created', frames: window.mbFrames.size } + }) + expect(state.frames).toBe(0) + await expect.poll(() => page.evaluate(() => window.mbCleanupContext?.state || 'not-created')).toMatch(/^(?:closed|not-created)$/) + state.audioContext = await page.evaluate(() => window.mbCleanupContext?.state || 'not-created') + await testInfo.attach('mediabunny-video-ownership', { contentType: 'application/json', body: JSON.stringify({ implementation: implementation.name, sha256: hash(implementation.code), scenario, outcome, result, state, scope: 'Actual SDK MP4 decoding and browser clock/RAF; frame delivery or two raw VideoSample deliveries before CanvasSink conversion control interleaving. Source/seek ownership, pause and timeupdate reentry verified; not long-run AV sync or a mock codec.' }) }) + } + }) +} diff --git a/test/mediabunny-video.test.js b/test/mediabunny-video.test.js new file mode 100644 index 000000000..7c3c7d423 --- /dev/null +++ b/test/mediabunny-video.test.js @@ -0,0 +1,517 @@ +import assert from 'node:assert/strict' +// eslint-disable-next-line test/no-import-node-test -- Real compiled video engine with controlled SDK iterator interleavings. +import test from 'node:test' +import { mbCandidate, mbEnvironment } from './helpers/mediabunny.js' + +const implementation = await mbCandidate() +const flush = () => new Promise(resolve => setImmediate(resolve)) +function deferred() { + let resolve, reject + const promise = new Promise((yes, no) => { + resolve = yes + reject = no + }) + return { promise, resolve, reject } +} +const frame = (name, timestamp = 0) => ({ canvas: { name }, timestamp, duration: 0.1 }) +const item = value => ({ value, done: !value }) +function iterator(values = []) { + let reads = 0 + let returns = 0 + return { + next: async () => { + reads++ + return item(values.shift()) + }, + return: async () => { + returns++ + return item() + }, + get reads() { return reads }, + get returns() { return returns }, + } +} +function environment(options = {}) { + const env = mbEnvironment(implementation) + env.eventNames.push('timeupdate', 'ended', 'waiting', 'playing', 'canplay') + const canvas = env.factory(options)(env.art) + const video = canvas.engine.video + canvas.engine.audio.seek = async () => {} + const draws = [] + env.context.drawImage = source => draws.push(source.name) + video.audioClock = { currentTime: 1 } + return { ...env, canvas, video, draws } +} + +test('MediaBunny video preserves first seek frame and queues the second with exact iterator timestamp', async () => { + const env = environment() + const frames = iterator([frame('first', 3), frame('second', 3.1)]) + env.video.videoSink = { canvases: (time) => { + assert.equal(time, 3) + return frames + } } + await env.video.seek(3) + assert.deepEqual(env.draws, ['first']) + assert.equal(env.video.nextFrame.canvas.name, 'second') + assert.equal(frames.reads, 2) + env.art.emit('destroy') +}) + +test('MediaBunny video detaches iterator before awaiting release, and releases it once', async () => { + const env = environment() + const release = deferred() + let returns = 0 + env.video.videoIterator = { return: () => { + returns++ + return release.promise + } } + const closing = env.video.stopIterator() + assert.equal(env.video.videoIterator, null) + const again = env.video.stopIterator() + release.resolve(item()) + await Promise.all([closing, again]) + assert.equal(returns, 1) + env.art.emit('destroy') +}) + +test('MediaBunny old iterator return cannot erase a newer iterator', async () => { + const env = environment() + const release = deferred() + env.video.videoIterator = { return: () => release.promise } + const closing = env.video.stopIterator() + const next = iterator() + env.video.videoIterator = next + release.resolve(item()) + await closing + assert.equal(env.video.videoIterator, next) + env.art.emit('destroy') +}) + +for (const ending of ['stop', 'destroy']) { + test(`MediaBunny pending render frame cannot draw after ${ending}`, async () => { + const env = environment() + const pending = deferred() + let reads = 0 + env.video.videoIterator = { next: () => ++reads === 1 ? pending.promise : Promise.resolve(item()), return: async () => item() } + const reading = env.video.updateNextFrame(env.video.asyncId) + if (ending === 'stop') + env.video.stop() + else env.art.emit('destroy') + pending.resolve(item(frame('obsolete'))) + await reading + assert.deepEqual(env.draws, []) + assert.equal(env.video.nextFrame, null) + env.art.emit('destroy') + }) +} + +for (const ending of ['destroy', 'seek']) { + test(`MediaBunny pending first seek frame cannot consume or overwrite frames after ${ending}`, async () => { + const env = environment() + const pending = deferred() + let oldReads = 0 + const old = { next: async () => { + oldReads++ + return oldReads === 1 ? pending.promise : item(frame('old-second')) + }, return: async () => item() } + const latest = iterator([frame('new-first'), frame('new-second')]) + env.video.videoSink = { canvases: time => time === 1 ? old : latest } + const seeking = env.video.seek(1) + await flush() + if (ending === 'destroy') + env.art.emit('destroy') + else await env.video.seek(2) + pending.resolve(item(frame('old-first'))) + await seeking + assert.deepEqual(env.draws, ending === 'destroy' ? [] : ['new-first']) + assert.equal(oldReads, 1) + if (ending === 'seek') + assert.equal(env.video.nextFrame.canvas.name, 'new-second') + env.art.emit('destroy') + }) +} + +test('MediaBunny a new load does not wait for obsolete iterator disposal', async () => { + const env = environment() + const release = deferred() + env.video.videoIterator = { return: () => release.promise } + let metadata = 0 + const loading = env.video.load({ input: {}, videoTrack: null, duration: 9 }, () => metadata++) + await flush() + assert.equal(metadata, 1) + assert.equal(env.video.duration, 9) + release.resolve(item()) + await loading + env.art.emit('destroy') +}) + +for (const ending of ['destroy', 'source']) { + test(`MediaBunny stale codec capability result cannot alter metadata after ${ending}`, async () => { + const env = environment() + const capability = deferred() + let metadata = 0 + const loading = env.video.load({ input: {}, videoTrack: { codec: 'avc', canDecode: () => capability.promise }, duration: 8 }, () => metadata++) + await flush() + if (ending === 'destroy') + env.art.emit('destroy') + else await env.video.load({ input: {}, videoTrack: null, duration: 4 }) + env.canvas.width = 42 + capability.resolve(false) + await loading + assert.equal(metadata, 0) + assert.equal(env.canvas.width, 42) + env.art.emit('destroy') + }) +} + +for (const ending of ['stop', 'destroy']) { + test(`MediaBunny timeupdate listener ${ending} prevents rendering and RAF rescheduling`, () => { + const env = environment() + env.video.nextFrame = frame('due') + env.video.events.addEventListener('timeupdate', () => ending === 'stop' ? env.video.stop() : env.art.emit('destroy')) + env.video.render() + assert.deepEqual(env.draws, []) + assert.equal(env.frames.size, 0) + env.art.emit('destroy') + }) +} + +test('MediaBunny repeated video start owns only one native RAF including id zero', async () => { + const env = environment() + env.video.start({ currentTime: 0 }) + assert.equal(env.frames.size, 1) + env.video.start({ currentTime: 0 }) + assert.equal(env.frames.size, 1) + env.video.stop() + assert.equal(env.frames.size, 0) + env.art.emit('destroy') +}) + +test('MediaBunny already queued RAF callback stays inert after stop', () => { + const env = environment() + env.video.start({ currentTime: 0 }) + const callback = [...env.frames.values()][0] + env.video.stop() + env.emitted.length = 0 + callback() + assert.deepEqual(env.emitted, []) + assert.equal(env.frames.size, 0) + env.art.emit('destroy') +}) + +for (const ending of ['destroy', 'source']) { + test(`MediaBunny poster callback cannot overwrite canvas after ${ending}`, async () => { + const env = environment({ poster: 'poster.jpg' }) + const images = [] + env.globals.Image = class { + constructor() { + this.name = 'poster' + this.naturalWidth = 320 + this.naturalHeight = 180 + images.push(this) + } + } + env.video.drawPoster() + const callback = images[0].onload + if (ending === 'destroy') { + env.art.emit('destroy') + } + else { + env.video.poster = '' + await env.video.load({ input: {}, videoTrack: null, duration: 9 }) + } + env.canvas.width = 42 + callback() + assert.deepEqual(env.draws, []) + assert.equal(env.canvas.width, 42) + env.art.emit('destroy') + }) +} + +for (const dropLateFrames of [false, true]) { + test(`MediaBunny video retains default/tolerance frame selection with dropLateFrames=${dropLateFrames}`, async () => { + const env = environment({ dropLateFrames, avSyncTolerance: 0.12 }) + env.video.playbackRate = 2 + env.video.videoIterator = iterator([frame('late', 0.8), frame('near', 0.97), frame('future', 1.2)]) + await env.video.updateNextFrame(env.video.asyncId) + assert.deepEqual(env.draws, dropLateFrames ? ['near'] : ['late', 'near']) + assert.equal(env.video.nextFrame.canvas.name, 'future') + env.art.emit('destroy') + }) +} + +test('MediaBunny waiting listener pause prevents a new RAF', () => { + const env = environment() + env.video.duration = 8 + env.video.events.addEventListener('waiting', () => env.video.stop()) + env.video.render() + assert.equal(env.frames.size, 0) + env.art.emit('destroy') +}) + +test('MediaBunny stalled canplay listener pause suppresses playing and another RAF', () => { + const env = environment() + env.video.stalled = true + env.video.nextFrame = frame('due') + env.video.events.addEventListener('canplay', () => env.video.stop()) + env.video.render() + assert.equal(env.emitted.some(event => event.name === 'video:playing'), false) + assert.equal(env.frames.size, 0) + env.art.emit('destroy') +}) + +test('MediaBunny seek during pending capability detection preserves the current load metadata', async () => { + const env = environment() + const capability = deferred() + let metadata = 0 + const loading = env.video.load({ input: {}, videoTrack: { codec: 'avc', canDecode: () => capability.promise }, duration: 8 }, () => metadata++) + await flush() + const seeking = env.video.seek(3) + capability.resolve(false) + await Promise.all([loading, seeking]) + assert.equal(metadata, 1) + assert.equal(env.video.duration, 8) + env.art.emit('destroy') +}) + +test('MediaBunny new source cancels a pending seek before its own track selection finishes', async () => { + const env = environment() + const pending = deferred() + let reads = 0 + env.video.videoSink = { canvases: () => ({ next: async () => ++reads === 1 ? pending.promise : item(frame('second')), return: async () => item() }) } + const seeking = env.canvas.engine.seek(2) + await flush() + const source = deferred() + env.canvas.engine.performLoad = () => source.promise + const loading = env.canvas.engine.load('new.mp4') + pending.resolve(item(frame('old-source'))) + await seeking + await flush() + assert.deepEqual(env.draws, []) + source.resolve() + await loading + env.art.emit('destroy') +}) + +test('MediaBunny paused seek still renders its requested first frame', async () => { + const env = environment() + env.video.stop() + env.video.videoSink = { canvases: () => iterator([frame('target'), frame('next')]) } + await env.canvas.engine.seek(3) + assert.deepEqual(env.draws, ['target']) + assert.equal(env.canvas.paused, true) + assert.equal(env.frames.size, 0) + env.art.emit('destroy') +}) + +test('MediaBunny late seek failure cannot release the current iterator', async () => { + const env = environment() + const pending = deferred() + const latest = iterator([frame('current'), frame('next')]) + env.video.videoSink = { canvases: time => time === 1 ? { next: () => pending.promise, return: async () => item() } : latest } + const old = env.video.seek(1) + await flush() + await env.video.seek(2) + pending.reject(new Error('old decoder failed')) + await old + assert.equal(env.video.videoIterator, latest) + assert.equal(latest.returns, 0) + assert.deepEqual(env.draws, ['current']) + env.art.emit('destroy') +}) + +test('MediaBunny stale transparency rejection is observed after source replacement', async () => { + const env = environment() + const pending = deferred() + const loading = env.video.load({ input: {}, videoTrack: { codec: 'avc', canDecode: async () => true, canBeTransparent: () => pending.promise }, duration: 8 }) + await flush() + await env.video.load({ input: {}, videoTrack: null, duration: 4 }) + pending.reject(new Error('old capability failed')) + await loading + assert.equal(env.video.duration, 4) + env.art.emit('destroy') +}) + +test('MediaBunny old frame fetch completion cannot unlock a newer pending fetch', async () => { + const env = environment() + const old = deferred() + const latest = deferred() + env.video.videoIterator = { next: () => old.promise, return: async () => item() } + const reading = env.video.updateNextFrame(env.video.asyncId) + await flush() + env.video.stop() + env.video.videoIterator = { next: () => latest.promise, return: async () => item() } + env.video.start({ currentTime: 1 }) + await flush() + old.resolve(item(frame('obsolete'))) + await reading + assert.equal(env.video.isFetching, true) + latest.resolve(item(frame('future', 3))) + await flush() + assert.equal(env.video.isFetching, false) + assert.equal(env.video.nextFrame.canvas.name, 'future') + env.art.emit('destroy') +}) + +test('MediaBunny stop/start shares a pending read without concurrent iterator.next calls', async () => { + const env = environment() + const pending = deferred() + let reads = 0 + env.video.videoIterator = { next: () => { + reads++ + return pending.promise + }, return: async () => item() } + const old = env.video.updateNextFrame(env.video.asyncId) + await flush() + env.video.stop() + env.video.start({ currentTime: 1 }) + await flush() + assert.equal(reads, 1) + pending.resolve(item(frame('future', 2))) + await old + await flush() + assert.equal(env.video.nextFrame.canvas.name, 'future') + assert.equal(reads, 1) + env.art.emit('destroy') +}) + +test('MediaBunny renderer observes decoder failure, stops and reports one media error', async () => { + const env = environment() + const failure = new Error('decode failed') + const active = iterator() + active.next = async () => { + throw failure + } + env.video.videoIterator = active + env.video.start({ currentTime: 1 }) + await flush() + assert.deepEqual({ ...env.canvas.error }, { code: 4, message: failure.message }) + assert.equal(env.emitted.filter(event => event.name === 'video:error').length, 1) + assert.equal(env.frames.size, 0) + assert.equal(active.returns, 1) + assert.equal(env.video.videoIterator, null) + env.art.emit('destroy') +}) + +test('MediaBunny explicit iterator release preserves rejection after detachment', async () => { + const env = environment() + const failure = new Error('release failed') + env.video.videoIterator = { return: async () => { + throw failure + } } + await assert.rejects(env.video.stopIterator(), error => error === failure) + assert.equal(env.video.videoIterator, null) + env.art.emit('destroy') +}) + +test('MediaBunny normal ended sequence remains timeupdate, ended, pause, canplay', () => { + const env = environment() + env.video.duration = 1 + env.video.render() + assert.deepEqual(env.emitted.map(event => event.name), ['video:timeupdate', 'video:ended', 'video:pause', 'video:canplay']) + assert.equal(env.frames.size, 0) + env.art.emit('destroy') +}) + +test('MediaBunny ended listener restart suppresses old pause/canplay without canceling its new RAF', () => { + const env = environment() + env.video.duration = 1 + env.video.events.addEventListener('ended', () => env.video.start({ currentTime: 0 })) + env.video.render() + assert.deepEqual(env.emitted.map(event => event.name), ['video:timeupdate', 'video:ended']) + assert.equal(env.frames.size, 1) + env.art.emit('destroy') +}) + +test('MediaBunny inactive instance cleanup cannot cancel another instance RAF id zero', () => { + const env = environment() + const other = new env.video.constructor({ canvas: { width: 0, height: 0 }, ctx: env.context, events: env.video.events }) + env.video.start({ currentTime: 0 }) + assert.equal(env.frames.size, 1) + other.destroy() + assert.equal(env.frames.size, 1) + env.art.emit('destroy') +}) + +test('MediaBunny decoder failure remains observable if audio cleanup throws', async () => { + const env = environment() + env.globals.console = { ...console, warn() {} } + env.canvas.engine.paused = false + env.canvas.engine.audio.pause = () => { + throw new Error('audio cleanup failed') + } + env.video.videoIterator = { next: async () => { + throw new Error('original decode failure') + }, return: async () => item() } + env.video.start({ currentTime: 1 }) + await flush() + env.canvas.engine.audio.pause = () => {} + assert.equal(env.canvas.error.message, 'original decode failure') + assert.equal(env.canvas.paused, true) + assert.equal(env.frames.size, 0) + env.art.emit('destroy') +}) + +test('MediaBunny destroy observes iterator release failure and keeps terminal references cleared', async () => { + const env = environment() + const warnings = [] + env.globals.console = { ...console, warn: (...values) => warnings.push(values) } + const failure = new Error('iterator return failed') + env.video.videoIterator = { return: async () => { + throw failure + } } + env.art.emit('destroy') + await flush() + assert.equal(warnings.length, 1) + assert.equal(warnings[0][1], failure) + assert.equal(env.video.videoIterator, null) + assert.equal(env.video.nextFrame, null) + assert.equal(env.video.input, null) + assert.equal(env.video.videoSink, null) +}) + +for (const ending of ['destroy', 'seek']) { + test(`MediaBunny pending second seek frame cannot overwrite the current image after ${ending}`, async () => { + const env = environment() + const second = deferred() + let reads = 0 + const old = { next: async () => ++reads === 1 ? item(frame('old-first')) : second.promise, return: async () => item() } + env.video.videoSink = { canvases: time => time === 1 ? old : iterator([frame('new-first'), frame('new-second')]) } + const seeking = env.video.seek(1) + await flush() + assert.equal(reads, 2) + if (ending === 'destroy') + env.art.emit('destroy') + else await env.video.seek(2) + second.resolve(item(frame('old-second'))) + await seeking + assert.deepEqual(env.draws, ending === 'destroy' ? [] : ['new-first']) + env.art.emit('destroy') + }) +} + +test('MediaBunny missing 2D context rejects loading with a descriptive error', async () => { + const env = environment() + env.video.ctx = null + await assert.rejects(env.video.load({ input: {}, videoTrack: null, duration: 8 }), /Canvas 2D context is unavailable/) + env.art.emit('destroy') +}) + +test('MediaBunny start retains the queued second frame until its clock time before fetching another', async () => { + const env = environment() + const frames = iterator([frame('third', 1)]) + env.video.nextFrame = frame('second', 0.5) + env.video.videoIterator = frames + const clock = { currentTime: 0 } + env.video.start(clock) + await flush() + assert.equal(frames.reads, 0) + assert.equal(env.video.nextFrame.canvas.name, 'second') + clock.currentTime = 0.5 + env.video.render() + await flush() + assert.deepEqual(env.draws, ['second']) + assert.equal(frames.reads, 1) + assert.equal(env.video.nextFrame.canvas.name, 'third') + env.art.emit('destroy') +})