ArtPlayer/docs/compiled/artplayer-proxy-mediabunny.js

/*!
 * artplayer-proxy-mediabunny.js v1.2.0
 * Github: https://github.com/zhw2590582/ArtPlayer
 * (c) 2017-2026 Harvey Zhao
 * Released under the MIT License.
 */
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t=Ke(e),i=new _e(t);i.skipBits(1),i.skipBits(2);if(7!==i.readBits(5))return null;const r=i.readAlignedByte(),a=i.readAlignedByte(),s=i.readAlignedByte();h(i);let n=1,o=0,c=0,u=0;if(100===r||110===r||122===r||244===r||44===r||83===r||86===r||118===r||128===r){n=h(i),3===n&&(u=i.readBits(1)),o=h(i),c=h(i),i.skipBits(1);if(i.readBits(1))for(let e=0;e<(3!==n?8:12);e++){if(i.readBits(1)){const t=e<6?16:64;let r=8,a=8;for(let e=0;e<t;e++){if(0!==a){a=(r+m(i)+256)%256}r=0===a?r:a}}}}h(i);const f=h(i);if(0===f)h(i);else if(1===f){i.skipBits(1),m(i),m(i);const e=h(i);for(let t=0;t<e;t++)m(i)}h(i),i.skipBits(1);const p=h(i),g=h(i),k=16*(p+1),y=16*(g+1);let b=k,w=y;const T=i.readBits(1);T||i.skipBits(1),i.skipBits(1);if(i.readBits(1)){const e=h(i),t=h(i),r=h(i),a=h(i);let s,o;if(0===(0===u?n:0))s=1,o=2-T;else{s=3===n?1:2,o=(1===n?2:1)*(2-T)}b-=s*(e+t),w-=o*(r+a)}let S=2,v=2,P=2,I=0,x={num:1,den:1},C=null,B=null,E=null,_=null;const R=i.pos;if(i.readBits(1)){if(i.readBits(1)){const e=i.readBits(8);if(255===e)x={num:i.readBits(16),den:i.readBits(16)};else{const t=Ze[e];t&&(x=t)}}i.readBits(1)&&i.skipBits(1);if(i.readBits(1)){i.skipBits(3),I=i.readBits(1);i.readBits(1)&&(S=i.readBits(8),v=i.readBits(8),P=i.readBits(8))}i.readBits(1)&&(h(i),h(i));i.readBits(1)&&(i.skipBits(32),i.skipBits(32),i.skipBits(1));const e=i.readBits(1);e&&tt(i);const t=i.readBits(1);t&&tt(i),(e||t)&&i.skipBits(1),i.skipBits(1),E=i.pos,_=i.readBits(1),_&&(i.skipBits(1),h(i),h(i),h(i),h(i),C=h(i),B=h(i))}if(null===C){l(null===B);if(44!==r&&86!==r&&100!==r&&110!==r&&122!==r&&244!==r||!(16&a)){const e=p+1,t=(2-T)*(g+1),i=Yt.find(e=>e.level>=s)??d(Yt),r=Math.min(Math.floor(i.maxDpbMbs/(e*t)),16);C=r,B=r}else C=0,B=0}return l(null!==B),{emulationUnpreventedBytes:t,profileIdc:r,constraintFlags:a,levelIdc:s,frameMbsOnlyFlag:T,chromaFormatIdc:n,bitDepthLumaMinus8:o,bitDepthChromaMinus8:c,codedWidth:k,codedHeight:y,displayWidth:b,displayHeight:w,pixelAspectRatio:x,colourPrimaries:S,matrixCoefficients:P,transferCharacteristics:v,fullRangeFlag:I,numReorderFrames:C,maxDecFrameBuffering:B,vuiParametersFlagBitOffset:R,bitstreamRestrictionFlagBitOffset:E,bitstreamRestrictionFlag:_}}catch(t){return xe._error("Error parsing AVC SPS:",t),null}},tt=e=>{const t=h(e);e.skipBits(4),e.skipBits(4);for(let i=0;i<=t;i++)h(e),h(e),e.skipBits(1);e.skipBits(5),e.skipBits(5),e.skipBits(5),e.skipBits(5)},it=e=>{l(1!==e.bitstreamRestrictionFlag);const t=new Uint8Array(e.emulationUnpreventedBytes.byteLength+64),i=new _e(e.emulationUnpreventedBytes),r=new 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i=t.readBits(3),r=t.readBits(1),{general_profile_space:a,general_tier_flag:s,general_profile_idc:n,general_profile_compatibility_flags:o,general_constraint_indicator_flags:c,general_level_idc:l}=ot(t,i);h(t);const u=h(t);let d=0;3===u&&(d=t.readBits(1));const f=h(t),m=h(t);let p=f,g=m;if(t.readBits(1)){const e=h(t),i=h(t),r=h(t),a=h(t);let s=1,n=1;const o=0===d?u:0;1===o?(s=2,n=2):2===o&&(s=2,n=1),p-=(e+i)*s,g-=(r+a)*n}const k=h(t),y=h(t);h(t);const b=t.readBits(1);let w=0;for(let e=b?0:i;e<=i;e++)h(t),w=h(t),h(t);h(t),h(t),h(t),h(t),h(t),h(t),t.readBits(1)&&t.readBits(1)&&ct(t),t.skipBits(1),t.skipBits(1),t.readBits(1)&&(t.skipBits(4),t.skipBits(4),h(t),h(t),t.skipBits(1));const T=h(t);if(lt(t,T),t.readBits(1)){const e=h(t);for(let i=0;i<e;i++)h(t),t.skipBits(1)}t.skipBits(1),t.skipBits(1);let S=2,v=2,P=2,I=0,x=0,C={num:1,den:1};if(t.readBits(1)){const e=dt(t,i);C=e.pixelAspectRatio,S=e.colourPrimaries,v=e.transferCharacteristics,P=e.matrixCoefficients,I=e.fullRangeFlag,x=e.minSpatialSegmentationIdc}return{displayWidth:p,displayHeight:g,pixelAspectRatio:C,colourPrimaries:S,transferCharacteristics:v,matrixCoefficients:P,fullRangeFlag:I,maxDecFrameBuffering:w+1,spsMaxSubLayersMinus1:i,spsTemporalIdNestingFlag:r,generalProfileSpace:a,generalTierFlag:s,generalProfileIdc:n,generalProfileCompatibilityFlags:o,generalConstraintIndicatorFlags:c,generalLevelIdc:l,chromaFormatIdc:u,bitDepthLumaMinus8:k,bitDepthChromaMinus8:y,minSpatialSegmentationIdc:x}}catch(t){return xe._error("Error parsing HEVC SPS:",t),null}},nt=e=>{try{const t=[],i=[],r=[],a=[];for(const c of We(e)){const s=e.subarray(c.offset,c.offset+c.length),n=at(s[0]);n===Ue.VPS_NUT?t.push(s):n===Ue.SPS_NUT?i.push(s):n===Ue.PPS_NUT?r.push(s):n!==Ue.PREFIX_SEI_NUT&&n!==Ue.SUFFIX_SEI_NUT||a.push(s)}if(0===i.length||0===r.length)return null;const s=st(i[0]);if(!s)return null;let n=0;if(r.length>0){const e=r[0],t=new _e(Ke(e));t.skipBits(16),h(t),h(t),t.skipBits(1),t.skipBits(1),t.skipBits(3),t.skipBits(1),t.skipBits(1),h(t),h(t),m(t),t.skipBits(1),t.skipBits(1),t.readBits(1)&&h(t),m(t),m(t),t.skipBits(1),t.skipBits(1),t.skipBits(1),t.skipBits(1);const i=t.readBits(1),a=t.readBits(1);n=i||a?i&&!a?2:!i&&a?3:0:0}const o=[...t.length?[{arrayCompleteness:1,nalUnitType:Ue.VPS_NUT,nalUnits:t}]:[],...i.length?[{arrayCompleteness:1,nalUnitType:Ue.SPS_NUT,nalUnits:i}]:[],...r.length?[{arrayCompleteness:1,nalUnitType:Ue.PPS_NUT,nalUnits:r}]:[],...a.length?[{arrayCompleteness:1,nalUnitType:at(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 xe._error("Error building HEVC Decoder Configuration Record:",t),null}},ot=(e,t)=>{const i=e.readBits(2),r=e.readBits(1),a=e.readBits(5);let s=0;for(let u=0;u<32;u++)s=s<<1|e.readBits(1);const n=new Uint8Array(6);for(let u=0;u<6;u++)n[u]=e.readBits(8);const o=e.readBits(8),c=[],l=[];for(let u=0;u<t;u++)c.push(e.readBits(1)),l.push(e.readBits(1));if(t>0)for(let u=t;u<8;u++)e.skipBits(2);for(let u=0;u<t;u++)c[u]&&e.skipBits(88),l[u]&&e.skipBits(8);return{general_profile_space:i,general_tier_flag:r,general_profile_idc:a,general_profile_compatibility_flags:s,general_constraint_indicator_flags:n,general_level_idc:o}},ct=e=>{for(let t=0;t<4;t++)for(let i=0;i<(3===t?2:6);i++){if(e.readBits(1)){const i=Math.min(64,1<<4+(t<<1));t>1&&m(e);for(let t=0;t<i;t++)m(e)}else h(e)}},lt=(e,t)=>{const i=[];for(let r=0;r<t;r++)i[r]=ut(e,r,t,i)},ut=(e,t,i,r)=>{let a=0,s=0,n=0;if(0!==t&&(s=e.readBits(1)),s){if(t===i){n=t-(h(e)+1)}else n=t-1;e.readBits(1),h(e);const s=r[n]??0;for(let 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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?h(e):i=1===e.readBits(1);let n=1;if(!i){n=h(e)+1}r&&ft(e,n,s),a&&ft(e,n,s)}},ft=(e,t,i)=>{for(let r=0;r<t;r++)h(e),h(e),i&&(h(e),h(e)),e.readBits(1)};var mt,pt;(pt=mt||(mt={}))[pt.audAllowed=0]="audAllowed",pt[pt.beforeFirstVcl=1]="beforeFirstVcl",pt[pt.afterFirstVcl=2]="afterFirstVcl",pt[pt.eoBitstreamAllowed=3]="eoBitstreamAllowed",pt[pt.noMoreDataAllowed=4]="noMoreDataAllowed";const gt=(e,t)=>{const i=new Set;let r=mt.audAllowed;for(const s of rt(e,t)){if(r===mt.noMoreDataAllowed){i.add(s.offset);continue}const t=at(e[s.offset]);if(r===mt.eoBitstreamAllowed&&37!==t){i.add(s.offset);continue}let a=!1;35===t?r>mt.audAllowed?a=!0:r=mt.beforeFirstVcl:t<=31?r>mt.afterFirstVcl?a=!0:r=mt.afterFirstVcl:36===t?r!==mt.afterFirstVcl?a=!0:r=mt.eoBitstreamAllowed:37===t?r<mt.afterFirstVcl?a=!0:r=mt.noMoreDataAllowed:32===t||33===t||34===t||39===t||t>=41&&t<=44||t>=48&&t<=55?r>mt.beforeFirstVcl?a=!0:r=mt.beforeFirstVcl:(38===t||40===t||t>=45&&t<=47||t>=56&&t<=63)&&r<mt.afterFirstVcl&&(a=!0),a&&i.add(s.offset)}if(0===i.size)return null;const a=[];for(const s of rt(e,t))i.has(s.offset)||a.push(e.subarray(s.offset,s.offset+s.length));return((e,t)=>{if(t.description){const i=3&p(t.description)[21];return Ge(e,i+1)}return 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Jt)if(c<=d.maxPictureSize){l=d.level;break}const u=kt[s];return{profile:r,level:l,bitDepth:a,chromaSubsampling:n,videoFullRangeFlag:o,colourPrimaries:u?.colourPrimaries??2,transferCharacteristics:u?.transferCharacteristics??2,matrixCoefficients:u?.matrixCoefficients??2}},bt=function*(e){const t=new _e(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);l(t.pos%8===0),yield{type:r,data:e.subarray(t.pos/8,t.pos/8+n)},t.skipBits(8*n)}},wt=e=>{for(const{type:t,data:i}of bt(e)){if(1!==t)continue;const e=new _e(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 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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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null;const{asset:s}=a;return{frameSize:r,sampleRate:s.sampleRate,numberOfChannels:s.numberOfChannels,sampleCount:s.sampleCount,channelLayout:s.channelLayout,pcmResolution:s.pcmResolution,bitRate:0,core:null,hasExtensions:!0}},Vt=e=>{const t=Ht(e);return t?.core?t.hasExtensions?"dtsh":"dtsc":null},jt=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 _e(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 a=t.readBits(14)+1;if(a<96)return null;const s=t.readBits(6);if(s>=Lt.length)return null;const n=Mt[t.readBits(4)];if(0===n)return null;const o=Nt[t.readBits(5)];if(0!==t.readBits(1))return null;t.skipBits(4),t.skipBits(5);const c=t.readBits(2);if(3===c)return null;t.skipBits(1),i&&t.skipBits(16),t.skipBits(7);const l=Ot[t.readBits(3)];if(0===l)return null;const 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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<v;g++){const r=t.getUint8(i++),a=r>>7&1,s=63&r,n=t.getUint16(i,!1);i+=2;const o=[];for(let c=0;c<n;c++){const r=t.getUint16(i,!1);i+=2,o.push(e.subarray(i,i+r)),i+=r}P.push({arrayCompleteness:a,nalUnitType:s,nalUnits:o})}return{configurationVersion:r,generalProfileSpace:s,generalTierFlag:n,generalProfileIdc:o,generalProfileCompatibilityFlags:c,generalConstraintIndicatorFlags:l,generalLevelIdc:u,minSpatialSegmentationIdc:d,parallelismType:h,chromaFormatIdc:f,bitDepthLumaMinus8:m,bitDepthChromaMinus8:p,avgFrameRate:k,constantFrameRate:b,numTemporalLayers:w,temporalIdNested:T,lengthSizeMinusOne:S,arrays:P}}catch(t){return xe._error("Error deserializing HEVC Decoder Configuration Record:",t),null}})(e.codecDescription)?.arrays.find(e=>e.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<<e))+a:2===t?Math.floor(144*i/r)+a:4*(Math.floor(12*i/r)+a))(n,l,k,y,a>>1&1);if(null!==t&&t<b)return{header:null,bytesAdvanced:1};let w;return w=3===c?3===l?384:1152:3===l?384:2===l?1152:576,{header:{totalSize:b,mpegVersionId:c,lowSamplingFrequency:n,layer:l,bitrate:k,frequencyIndex:u,sampleRate:y,channel:d,modeExtension:h,copyright:f,original:m,emphasis:p,audioSamplesInFrame:w},bytesAdvanced:1}},gi=e=>{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;t<r;t++)s.push(_(e.subarray(i,i+16))),i+=16}}const n=t.getUint32(i);return i+=4,{systemId:a,keyIds:s,data:e.slice(i,i+n)}},Pi=(e,t)=>e.systemId===t.systemId&&((e,t)=>{if(e.length!==t.length)return!1;for(let i=0;i<e.length;i++)if(e[i]!==t[i])return!1;return!0})(e.data,t.data),Ii=e=>{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<s;a+=4,s-=4)for(let e=0;e<4;e++){const t=this.roundkey[a+e];this.roundkey[a+e]=this.roundkey[s+e],this.roundkey[s+e]=t}for(let a=4;a<40;a+=4)for(let e=0;e<4;e++){const t=this.roundkey[a+e];this.roundkey[a+e]=Ai[255&Fi[t>>>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;s<t.sampleToChunk.length;s++){const n=t.sampleToChunk[s],o=t.sampleToChunk[s+1],c=(o?o.startChunkIndex:t.chunkOffsets.length)-n.startChunkIndex;for(let s=0;s<c;s++){const o=n.startSampleIndex+s*n.samplesPerChunk,c=o+n.samplesPerChunk,l=A(t.sampleTimingEntries,o,e=>e.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;i<e.count;i++)t.presentationTimestamps.push({presentationTimestamp:e.startDecodeTimestamp+i*e.delta,sampleIndex:e.startIndex+i});for(const e of t.sampleCompositionTimeOffsets)for(let i=0;i<e.count;i++){const r=e.startIndex+i,a=t.presentationTimestamps[r];a&&(a.presentationTimestamp+=e.offset)}t.presentationTimestamps.sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp),t.presentationTimestampIndexMap=Array(t.presentationTimestamps.length).fill(-1);for(let e=0;e<t.presentationTimestamps.length;e++)t.presentationTimestampIndexMap[t.presentationTimestamps[e].sampleIndex]=e}return t}async readFragment(e){if(this.lastReadFragment?.moofOffset===e)return this.lastReadFragment;let t=this.reader.requestSliceRange(e,8,16);de(t)&&(t=await t),l(t);const i=Ii(t);l("moof"===i?.name);let r=this.reader.requestSlice(e,i.totalSize);de(r)&&(r=await r),l(r),this.traverseBox(r);const a=this.lastReadFragment;l(a&&a.moofOffset===e);for(const[,s]of a.trackData){const e=s.track,{fragmentPositionCache:t}=e;if(!s.startTimestampIsFinal){const i=e.fragmentLookupTable.find(e=>e.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;e<Math.min(s.samples.length,t.length);e++){const i=t[e];s.samples[e].encryption=i}}}return a}readContiguousBoxes(e){const t=e.filePos;for(;e.filePos-t<=e.length-8;){if(!this.traverseBox(e))break}}*iterateContiguousBoxes(e){const t=e.filePos;for(;e.filePos-t<=e.length-8;){const t=e.filePos,i=Ii(e);if(!i)break;yield{boxInfo:i,slice:e},e.filePos=t+i.totalSize}}traverseBox(e){var t,i,r,a,s,n,o,c,h,f,m,p,y,b,T,v,I,C,B,E,R,F,A,D,M,N,O,L,z,U,q,W,H;const j=e.filePos,X=Ii(e);if(!X)return!1;const $=e.filePos,G=j+X.totalSize;switch(X.name){case"mdia":case"minf":case"dinf":case"mfra":case"edts":case"sinf":case"schi":case"wave":this.readContiguousBoxes(e.slice($,X.contentSize));break;case"mvhd":{const t=So(e);e.skip(3),1===t?(e.skip(16),this.movieTimescale=Bo(e),this.movieDurationInTimescale=Fo(e)):(e.skip(8),this.movieTimescale=Bo(e),this.movieDurationInTimescale=Bo(e))}break;case"trak":{const t={id:-1,demuxer:this,trackBacking:null,disposition:{...Ee,primary:!1},info:null,timescale:-1,durationInMovieTimescale:-1,durationInMediaTimescale:-1,rotation:0,internalCodecId:null,name:null,languageCode:V,sampleTableByteOffset:-1,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:0,editListOffset:0,encryptionInfo:null,encryptionAuxInfo:null,frmaCodecString:null};if(this.currentTrack=t,this.readContiguousBoxes(e.slice($,X.contentSize)),-1!==t.id&&-1!==t.timescale&&null!==t.info)if("video"===t.info.type&&-1!==t.info.width){const e=t;t.trackBacking=new Hi(e),this.tracks.push(t)}else if("audio"===t.info.type&&-1!==t.info.numberOfChannels){const e=t;t.trackBacking=new Vi(e),this.tracks.push(t)}this.currentTrack=null}break;case"tkhd":{const t=this.currentTrack;if(!t)break;const i=So(e),r=!!(1&Io(e));if(t.disposition.default=r,0===i)e.skip(8),t.id=Bo(e),e.skip(4),t.durationInMovieTimescale=Bo(e);else{if(1!==i)throw new Error(`Incorrect track header version ${i}.`);e.skip(16),t.id=Bo(e),e.skip(4),t.durationInMovieTimescale=Fo(e)}e.skip(16);const a=[xi(e),xi(e),Ci(e),xi(e),xi(e),Ci(e),xi(e),xi(e),Ci(e)],s=u(K(Qi(a),90));l(0===s||90===s||180===s||270===s),t.rotation=s}break;case"elst":{const t=this.currentTrack;if(!t)break;const i=So(e);e.skip(3);let r=!1,a=0;const s=Bo(e);for(let n=0;n<s;n++){const s=1===i?Fo(e):Bo(e),n=1===i?Ao(e):_o(e),o=xi(e);if(r){xe._warn("Unsupported edit list: multiple edits are not currently supported. Only using first edit.");break}if(-1!==n){if(1!==o){xe._warn("Unsupported edit list entry: media rate must be 1.");break}t.editListPreviousSegmentDurations=a,t.editListOffset=n,r=!0}else a+=s}}break;case"mdhd":{const t=this.currentTrack;if(!t)break;const i=So(e);e.skip(3),0===i?(e.skip(8),t.timescale=Bo(e),t.durationInMediaTimescale=Bo(e)):1===i&&(e.skip(16),t.timescale=Bo(e),t.durationInMediaTimescale=Fo(e));let r=Po(e);if(r>0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&r))+t.languageCode,r>>=5;Y(t.languageCode)||(t.languageCode=V)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const i=Oo(e,4);"vide"===i?t.info={type:"video",width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,codec:null,codecDescription:null,colorSpace:{...x},avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null,proresCodecInfo:null,proresFormat:null}:"soun"===i&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null,dtsFormat:null,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=j,this.readContiguousBoxes(e.slice($,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;a<r;a++){const r=e.filePos,a=Ii(e);if(!a)break;t.internalCodecId=a.name;const s=a.name.toLowerCase();if("video"===t.info.type){e.skip(24),t.info.width=Po(e),t.info.height=Po(e),t.info.squarePixelWidth=t.info.width,t.info.squarePixelHeight=t.info.height,e.skip(50),t.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,r+a.totalSize-e.filePos));const i="encv"===s?t.frmaCodecString:s;t.frmaCodecString=null,"avc1"===i||"avc3"===i?(t.info.codec="avc",t.info.avcType="avc1"===i?1:3):"hvc1"===i||"hev1"===i?t.info.codec="hevc":"vp08"===i?t.info.codec="vp8":"vp09"===i?t.info.codec="vp9":"av01"===i?t.info.codec="av1":ti.includes(s)?(t.info.codec="prores",t.info.proresFormat=s):null===i?xe._warn("Unknown encrypted video codec due to missing frma box."):xe._warn(`Unsupported video codec (sample entry type '${a.name}').`)}else{e.skip(8);const n=Po(e);e.skip(6);let o=Po(e),c=Po(e);e.skip(4);let l=Bo(e)/65536,u=null;0===i&&n>0&&(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 ${e}.`),t.info.codec=null)}else if("lpcm"===d&&null!==u){const e=c+7>>3,i=Boolean(1&u),r=Boolean(2&u),a=4&u?-1:0;c>0&&c<=64&&(i?32===c&&(t.info.codec=r?"pcm-f32be":"pcm-f32"):a&1<<e-1?1===e?t.info.codec="pcm-s8":2===e?t.info.codec=r?"pcm-s16be":"pcm-s16":3===e?t.info.codec=r?"pcm-s24be":"pcm-s24":4===e&&(t.info.codec=r?"pcm-s32be":"pcm-s32"):1===e&&(t.info.codec="pcm-u8")),null===t.info.codec&&xe._warn("Unsupported PCM format.")}else null===d?xe._warn("Unknown encrypted audio codec due to missing frma box."):xe._warn(`Unsupported audio codec (sample entry type '${a.name}').`)}e.filePos=r+a.totalSize}}break;case"frma":{const t=this.currentTrack;if(!t)break;const i=Oo(e,4).toLowerCase();t.frmaCodecString=i}break;case"schm":{const t=this.currentTrack;if(!t)break;e.skip(4);const i=Oo(e,4);"cenc"===i||"cens"===i||"cbcs"===i?t.encryptionInfo={scheme:i,defaultKid:null,defaultIsProtected:null,defaultPerSampleIvSize:null,defaultConstantIv:null,defaultCryptByteBlock:null,defaultSkipByteBlock:null}:xe._warn(`Unsupported encryption scheme '${i}'.`)}break;case"tenc":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;const i=So(e);e.skip(3),e.skip(1);const r=So(e);if(i>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<G;){const a=So(e),s=Io(e);if((a&i)===It.STREAMINFO){e.skip(10);const i=Bo(e),r=i>>>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):n<Lt.length&&(c=Lt[n]+s),{sampleRate:i,maxBitrate:t.getUint32(4),avgBitrate:t.getUint32(8),pcmSampleDepth:e[12],sampleCount:Wt[a],channelLayout:o,numberOfChannels:c}})(To(e,Math.min(X.contentSize,20)));if(!i){xe._warn("Invalid ddts box contents, ignoring.");break}t.info.sampleRate=i.sampleRate,null!==i.numberOfChannels&&(t.info.numberOfChannels=i.numberOfChannels)}break;case"stts":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const i=Bo(e);let r=0,a=0;for(let s=0;s<i;s++){const i=Bo(e),s=Bo(e);t.sampleTable.sampleTimingEntries.push({startIndex:r,startDecodeTimestamp:a,count:i,delta:s}),r+=i,a+=i*s}}break;case"ctts":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const i=Bo(e);let r=0;for(let a=0;a<i;a++){const i=Bo(e),a=_o(e);t.sampleTable.sampleCompositionTimeOffsets.push({startIndex:r,count:i,offset:a}),r+=i}}break;case"stsz":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const i=Bo(e),r=Bo(e);if(0===i)for(let a=0;a<r;a++){const i=Bo(e);t.sampleTable.sampleSizes.push(i)}else t.sampleTable.sampleSizes.push(i)}break;case"stz2":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4),e.skip(3);const i=So(e),r=Bo(e),a=To(e,Math.ceil(r*i/8)),s=new _e(a);for(let e=0;e<r;e++){const e=s.readBits(i);t.sampleTable.sampleSizes.push(e)}}break;case"stss":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4),t.sampleTable.keySampleIndices=[];const i=Bo(e);for(let r=0;r<i;r++){const i=Bo(e)-1;t.sampleTable.keySampleIndices.push(i)}0!==t.sampleTable.keySampleIndices[0]&&t.sampleTable.keySampleIndices.unshift(0)}break;case"stsc":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const i=Bo(e);for(let a=0;a<i;a++){const i=Bo(e)-1,r=Bo(e),a=Bo(e);t.sampleTable.sampleToChunk.push({startSampleIndex:-1,startChunkIndex:i,samplesPerChunk:r,sampleDescriptionIndex:a})}let r=0;for(let e=0;e<t.sampleTable.sampleToChunk.length;e++)if(t.sampleTable.sampleToChunk[e].startSampleIndex=r,e<t.sampleTable.sampleToChunk.length-1){r+=(t.sampleTable.sampleToChunk[e+1].startChunkIndex-t.sampleTable.sampleToChunk[e].startChunkIndex)*t.sampleTable.sampleToChunk[e].samplesPerChunk}}break;case"stco":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const i=Bo(e);for(let r=0;r<i;r++){const i=Bo(e);t.sampleTable.chunkOffsets.push(i)}}break;case"co64":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const i=Bo(e);for(let r=0;r<i;r++){const i=Fo(e);t.sampleTable.chunkOffsets.push(i)}}break;case"mvex":this.isFragmented=!0,this.readContiguousBoxes(e.slice($,X.contentSize));break;case"mehd":{const t=So(e);e.skip(3);const i=1===t?Fo(e):Bo(e);this.movieDurationInTimescale=i}break;case"trex":{e.skip(4);const t=Bo(e),i=Bo(e),r=Bo(e),a=Bo(e),s=Bo(e);this.fragmentTrackDefaults.push({trackId:t,defaultSampleDescriptionIndex:i,defaultSampleDuration:r,defaultSampleSize:a,defaultSampleFlags:s})}break;case"tfra":{const t=So(e);e.skip(3);const i=Bo(e),r=this.tracks.find(e=>e.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;h<d;h++){const i=1===t?Fo(e):Bo(e),a=1===t?Fo(e):Bo(e);c(e),l(e),u(e),r.fragmentLookupTable.push({timestamp:i,moofOffset:a})}r.fragmentLookupTable.sort((e,t)=>e.timestamp-t.timestamp);for(let e=0;e<r.fragmentLookupTable.length-1;e++){const t=r.fragmentLookupTable[e],i=r.fragmentLookupTable[e+1];t.timestamp===i.timestamp&&(r.fragmentLookupTable.splice(e+1,1),e--)}}break;case"moof":this.currentFragment={moofOffset:j,moofSize:X.totalSize,implicitBaseDataOffset:j,trackData:new Map,psshBoxes:[]},this.readContiguousBoxes(e.slice($,X.contentSize)),this.lastReadFragment=this.currentFragment,this.currentFragment=null;break;case"traf":if(l(this.currentFragment),this.readContiguousBoxes(e.slice($,X.contentSize)),this.currentTrack){const e=this.currentFragment.trackData.get(this.currentTrack.id);e:if(e){if(0===e.samples.length){this.currentFragment.trackData.delete(this.currentTrack.id);break e}e.presentationTimestamps=e.samples.map((e,t)=>({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let a=0;a<e.presentationTimestamps.length;a++){const t=e.presentationTimestamps[a],i=e.samples[t.sampleIndex];if(null===e.firstKeyFrameTimestamp&&i.isKeyFrame&&(e.firstKeyFrameTimestamp=i.presentationTimestamp),a<e.presentationTimestamps.length-1){const r=e.presentationTimestamps[a+1].presentationTimestamp-t.presentationTimestamp;i.duration=r}}const t=e.samples[e.presentationTimestamps[0].sampleIndex],i=e.samples[d(e.presentationTimestamps).sampleIndex];e.startTimestamp=t.presentationTimestamp,e.endTimestamp=i.presentationTimestamp+i.duration;const{currentFragmentState:r}=this.currentTrack;l(r),null!==r.startTimestamp&&(Gi(e,r.startTimestamp),e.startTimestampIsFinal=!0),r.encryptionAuxInfo&&!e.samples[0].encryption&&(e.encryptionAuxInfo=r.encryptionAuxInfo)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"pssh":{if(this.input._formatOptions.isobmff?._suppressPsshParsing)break;const t=vi(To(e,X.contentSize));this.currentFragment?this.currentFragment.psshBoxes.push(t):this.currentTrack||this.psshBoxes.push(t)}break;case"tfhd":{l(this.currentFragment),e.skip(1);const t=Io(e),i=Boolean(1&t),r=Boolean(2&t),a=Boolean(8&t),s=Boolean(16&t),n=Boolean(32&t),o=Boolean(65536&t),c=Boolean(131072&t),u=Bo(e),d=this.tracks.find(e=>e.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;p<d;p++){let r,a,s;n?r=Bo(e):(l(null!==t.currentFragmentState.defaultSampleDuration),r=t.currentFragmentState.defaultSampleDuration),o?a=Bo(e):(l(null!==t.currentFragmentState.defaultSampleSize),a=t.currentFragmentState.defaultSampleSize),c?s=Bo(e):(l(null!==t.currentFragmentState.defaultSampleFlags),s=t.currentFragmentState.defaultSampleFlags),0===p&&null!==m&&(s=m);let d=0;u&&(d=0===i?Bo(e):_o(e));const h=!(65536&s);f.samples.push({presentationTimestamp:f.currentTimestamp+d,duration:r,byteOffset:f.currentOffset,byteSize:a,isKeyFrame:h,encryption:null}),f.currentOffset+=a,f.currentTimestamp+=r}this.currentFragment.implicitBaseDataOffset=f.currentOffset}break;case"saiz":{const t=this.currentTrack;if(!t||!t.encryptionInfo)break;e.skip(1);if(1&Io(e)){const i=Oo(e,4),r=Bo(e);if(i!==t.encryptionInfo.scheme||0!==r)break}const i=So(e),r=Bo(e);let a=null;0===i&&r>0&&(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;o<Math.min(s,i.samples.length);o++){const r=new Uint8Array(16);n>0?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;i<t;i++){const t=Po(e),i=Bo(e);s.push({clearLen:t,protectedLen:i})}}i.samples[o].encryption={iv:r,subsamples:s}}}break;case"udta":{const l=this.iterateContiguousBoxes(e.slice($,X.contentSize));for(const{boxInfo:e,slice:u}of l){if("meta"!==e.name&&!this.currentTrack){const n=u.filePos;(t=this.metadataTags).raw??(t.raw={}),"\xa9"===e.name[0]?(i=this.metadataTags.raw)[r=e.name]??(i[r]=Ei(u)):(a=this.metadataTags.raw)[s=e.name]??(a[s]=To(u,e.contentSize)),u.filePos=n}switch(e.name){case"meta":u.skip(-e.headerSize),this.traverseBox(u);break;case"\xa9nam":case"name":this.currentTrack?this.currentTrack.name=k.decode(To(u,e.contentSize)):(n=this.metadataTags).title??(n.title=Ei(u));break;case"\xa9des":this.currentTrack||((o=this.metadataTags).description??(o.description=Ei(u)));break;case"\xa9ART":this.currentTrack||((c=this.metadataTags).artist??(c.artist=Ei(u)));break;case"\xa9alb":this.currentTrack||((h=this.metadataTags).album??(h.album=Ei(u)));break;case"albr":this.currentTrack||((f=this.metadataTags).albumArtist??(f.albumArtist=Ei(u)));break;case"\xa9gen":this.currentTrack||((m=this.metadataTags).genre??(m.genre=Ei(u)));break;case"\xa9day":if(!this.currentTrack){const e=new Date(Ei(u));Number.isNaN(e.getTime())||((p=this.metadataTags).date??(p.date=e))}break;case"\xa9cmt":this.currentTrack||((y=this.metadataTags).comment??(y.comment=Ei(u)));break;case"\xa9lyr":this.currentTrack||((b=this.metadataTags).lyrics??(b.lyrics=Ei(u)))}}}break;case"meta":{if(this.currentTrack)break;const t=0!==Bo(e);this.currentMetadataKeys=new Map,t?this.readContiguousBoxes(e.slice($,X.contentSize)):this.readContiguousBoxes(e.slice($+4,X.contentSize-4)),this.currentMetadataKeys=null}break;case"keys":{if(!this.currentMetadataKeys)break;e.skip(4);const t=Bo(e);for(let i=0;i<t;i++){const t=Bo(e);e.skip(4);const r=k.decode(To(e,t-8));this.currentMetadataKeys.set(i+1,r)}}break;case"ilst":{if(!this.currentMetadataKeys)break;const t=this.iterateContiguousBoxes(e.slice($,X.contentSize));for(const{boxInfo:e,slice:i}of t){let t=e.name;const r=(t.charCodeAt(0)<<24)+(t.charCodeAt(1)<<16)+(t.charCodeAt(2)<<8)+t.charCodeAt(3);this.currentMetadataKeys.has(r)&&(t=this.currentMetadataKeys.get(r));const a=_i(i);switch((T=this.metadataTags).raw??(T.raw={}),(v=this.metadataTags.raw)[t]??(v[t]=a),t){case"\xa9nam":case"titl":case"com.apple.quicktime.title":case"title":"string"===typeof a&&((I=this.metadataTags).title??(I.title=a));break;case"\xa9des":case"desc":case"dscp":case"com.apple.quicktime.description":case"description":"string"===typeof a&&((C=this.metadataTags).description??(C.description=a));break;case"\xa9ART":case"com.apple.quicktime.artist":case"artist":"string"===typeof a&&((B=this.metadataTags).artist??(B.artist=a));break;case"\xa9alb":case"albm":case"com.apple.quicktime.album":case"album":"string"===typeof a&&((E=this.metadataTags).album??(E.album=a));break;case"aART":case"album_artist":"string"===typeof a&&((R=this.metadataTags).albumArtist??(R.albumArtist=a));break;case"\xa9cmt":case"com.apple.quicktime.comment":case"comment":"string"===typeof a&&((F=this.metadataTags).comment??(F.comment=a));break;case"\xa9gen":case"gnre":case"com.apple.quicktime.genre":case"genre":"string"===typeof a&&((A=this.metadataTags).genre??(A.genre=a));break;case"\xa9lyr":case"lyrics":"string"===typeof a&&((D=this.metadataTags).lyrics??(D.lyrics=a));break;case"\xa9day":case"rldt":case"com.apple.quicktime.creationdate":case"date":if("string"===typeof a){const e=new Date(a);Number.isNaN(e.getTime())||((M=this.metadataTags).date??(M.date=e))}break;case"covr":case"com.apple.quicktime.artwork":a instanceof Ce?((N=this.metadataTags).images??(N.images=[]),this.metadataTags.images.push({data:a.data,kind:"coverFront",mimeType:a.mimeType})):a instanceof Uint8Array&&((O=this.metadataTags).images??(O.images=[]),this.metadataTags.images.push({data:a,kind:"coverFront",mimeType:"image/*"}));break;case"track":if("string"===typeof a){const e=a.split("/"),t=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&((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<t.endTimestamp}},i,i,t):s}async getNextPacket(e,t){const i=this.packetToSampleIndex.get(e);if(void 0!==i)return this.fetchPacketForSampleIndex(i+1,t);const r=this.packetToFragmentLocation.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(r.fragment,e=>{if(e===r.fragment){const t=e.trackData.get(this.internalTrack.id);if(r.sampleIndex+1<t.samples.length)return{sampleIndex:r.sampleIndex+1,correctSampleFound:!0}}else{if(e.trackData.get(this.internalTrack.id))return{sampleIndex:0,correctSampleFound:!0}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)}async getKeyPacket(e,t){const i=this.mapTimestampIntoTimescale(e),r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=Ki(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=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<t.endTimestamp}},i,i,t):s}async getNextKeyPacket(e,t){const i=this.packetToSampleIndex.get(e);if(void 0!==i){const e=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),r=$i(e,i);return this.fetchPacketForSampleIndex(r,t)}const r=this.packetToFragmentLocation.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(r.fragment,e=>{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);e<i.length&&(t=i[e])}t??(t=er(this.internalTrack.encryptionInfo)),t&&(a=await tr(this.internalTrack,t,a,null))}}const s=(r.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,n=r.duration/this.internalTrack.timescale,o=new Si(a,r.isKeyFrame?"key":"delta",s,n,e,r.sampleSize);return this.packetToSampleIndex.set(o,e),o}async fetchPacketInFragment(e,t,i){if(-1===t)return null;const r=e.trackData.get(this.internalTrack.id).samples[t];let a;if(l(r),i.metadataOnly)a=Ti;else{let t=this.internalTrack.demuxer.reader.requestSlice(r.byteOffset,r.byteSize);if(de(t)&&(t=await t),!t)return null;if(a=To(t,r.byteSize),this.internalTrack.encryptionInfo){const t=r.encryption??er(this.internalTrack.encryptionInfo);t&&(a=await tr(this.internalTrack,t,a,e))}}const s=(r.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,n=r.duration/this.internalTrack.timescale,o=new Si(a,r.isKeyFrame?"key":"delta",s,n,e.moofOffset+t,r.byteSize);return this.packetToFragmentLocation.set(o,{fragment:e,sampleIndex:t}),o}async performFragmentedLookup(e,t,i,r,a){const s=this.internalTrack.demuxer;let n=null,o=null,c=-1;if(e){const{sampleIndex:i,correctSampleFound:r}=t(e);if(r)return this.fetchPacketInFragment(e,i,a);-1!==i&&(o=e,c=i)}const u=A(this.internalTrack.fragmentLookupTable,i,e=>e.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<d.moofOffset)){const e=this.internalTrack.fragmentLookupTable[u-1];l(!e||e.timestamp<d.timestamp);const i=e?.timestamp??-1/0;return this.performFragmentedLookup(null,t,i,r,a)}return o?this.fetchPacketInFragment(o,c,a):null}}class Hi extends Wi{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"video"}getCodec(){return this.internalTrack.info.codec}getCodedWidth(){return this.internalTrack.info.width}getCodedHeight(){return this.internalTrack.info.height}getSquarePixelWidth(){return this.internalTrack.info.squarePixelWidth}getSquarePixelHeight(){return this.internalTrack.info.squarePixelHeight}getRotation(){return this.internalTrack.rotation}async getColorSpace(){const e=await this.getDecoderConfig();return e?{primaries:e.colorSpace?.primaries,transfer:e.colorSpace?.transfer,matrix:e.colorSpace?.matrix,fullRange:e.colorSpace?.fullRange}:this.internalTrack.info.colorSpace}async canBeTransparent(){return"prores"===this.internalTrack.info.codec&&("ap4h"===this.internalTrack.info.proresFormat||"ap4x"===this.internalTrack.info.proresFormat)}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{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.startIndex<n.count&&(a+=n.offset);const o=e.sampleSizes[Math.min(t,e.sampleSizes.length-1)],c=A(e.sampleToChunk,t,e=>e.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;l<f+u.samplesPerChunk;l++){const i=e.sampleSizes[l];l<t&&(p+=i),m+=i}let g=r.delta;if(e.presentationTimestamps){const i=e.presentationTimestampIndexMap[t];if(l(void 0!==i),i<e.presentationTimestamps.length-1){g=e.presentationTimestamps[i+1].presentationTimestamp-a}}return{presentationTimestamp:a,duration:g,sampleOffset:p,sampleSize:o,chunkOffset:h,chunkSize:m,isKeyFrame:!e.keySampleIndices||-1!==F(e.keySampleIndices,t,e=>e)}},$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;e<i.sampleCount;e++)r+=i.sampleSizes[e]}let a=e.requestSlice(i.offset,r);if(de(a)&&(a=await a),!a)throw new Error("Failed to read auxiliary encryption info.");const s=t.defaultPerSampleIvSize;l(null!==s);const n=[];for(let o=0;o<i.sampleCount;o++){const e=i.defaultSampleInfoSize>0?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;t<e;t++){const e=Po(a),t=Bo(a);c.push({clearLen:e,protectedLen:t})}}n.push({iv:r,subsamples:c})}return i.resolved=n,n},er=e=>e.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<t.length-1;e++)for(let i=e+1;i<t.length;i++)Pi(t[e],t[i])&&(t.splice(i,1),i--)}const i=await e.demuxer.input._formatOptions.isobmff.resolveKeyId({keyId:s,psshBoxes:t});if(!("string"===typeof i&&32===i.length&&E.test(i)||i instanceof Uint8Array&&16===i.byteLength))throw new TypeError("resolveKeyId must return a 32-character hex string or a 16-byte Uint8Array containing the decryption key.");return i instanceof Uint8Array?i:(e=>{l(e.length%2===0);const t=new Uint8Array(e.length/2);for(let i=0;i<e.length;i+=2)t[i/2]=parseInt(e.slice(i,i+2),16);return t})(i)})();e.demuxer.decryptionKeyCache.set(s,t),n=await t}return"cenc"===a.scheme||"cens"===a.scheme?ir(n,a,t,i):rr(n,a,t,i)},ir=async(e,t,i,r)=>{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<t;i++){const t=16*i;a.in.set(r.subarray(t,t+16)),a.decrypt(),e.set(a.out,t)}return e}if(0===s&&0===n)throw new Error("cbcs with subsamples requires pattern encryption.");const o=new Uint8Array(r),c=ar(i.subsamples,s,n),u=new DataView(i.iv.buffer,i.iv.byteOffset,16);for(const l of c){a.iv[0]=u.getUint32(0,!1),a.iv[1]=u.getUint32(4,!1),a.iv[2]=u.getUint32(8,!1),a.iv[3]=u.getUint32(12,!1);for(const e of l.perSubsample){const t=e.length/16;for(let i=0;i<t;i++){const t=e.offset+16*i;a.in.set(r.subarray(t,t+16)),a.decrypt(),o.set(a.out,t)}}}return o},ar=(e,t,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<i?null:i},hr=e=>{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<i-1)return null;let a=t&r-1;for(let s=1;s<i;s++)a*=256,a+=So(e);return a},fr=(e,t)=>{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let i=0;for(let r=0;r<t;r++)i*=256,i+=So(e);return i},mr=e=>{const t=dr(e);if(null===t)return null;if(e.remainingLength<t)return null;return fr(e,t)},pr=e=>{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<t&&0!==i[r];)r+=1;return String.fromCharCode(...i.subarray(0,r))},yr=(e,t)=>{const i=To(e,t);let r=0;for(;r<t&&0!==i[r];)r+=1;return k.decode(i.subarray(0,r))},br=(e,t)=>{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||s<r;){let t=e.requestSliceRange(s,2,ur);if(de(t)&&(t=await t),!t)break;const i=gr(t);if(!i)break;if(a.has(i.id))return{pos:s,found:!0};Nr(i.size),s=t.filePos+i.size}return{pos:null!==r&&r>s?r:s,found:!1}},Tr=async(e,t,i,r)=>{const a=new Set(i);let s=t;for(;s<r;){let t=e.requestSliceRange(s,0,Math.min(65536,r-s));if(de(t)&&(t=await t),!t)break;if(t.length<8)break;for(let e=0;e<t.length-8;e++){t.filePos=s;const e=mr(t);if(null!==e&&a.has(e))return s;s++}}return null},Sr="V_MPEG4/ISO/AVC",vr="V_MPEGH/ISO/HEVC",Pr="V_VP8",Ir="V_VP9",xr="V_AV1",Cr="V_PRORES",Br="A_AAC",Er="A_MPEG/L3",_r="A_OPUS",Rr="A_VORBIS",Fr="A_FLAC",Ar="A_AC3",Dr="A_EAC3",Mr="A_DTS";function Nr(e){if(void 0===e)throw new Error("Undefined element size is used in a place where it is not supported.")}var Or,Lr,zr,Ur,qr,Wr;(Lr=Or||(Or={}))[Lr.None=0]="None",Lr[Lr.Xiph=1]="Xiph",Lr[Lr.FixedSize=2]="FixedSize",Lr[Lr.Ebml=3]="Ebml",(Ur=zr||(zr={}))[Ur.Block=1]="Block",Ur[Ur.Private=2]="Private",Ur[Ur.Next=4]="Next",(Wr=qr||(qr={}))[Wr.Zlib=0]="Zlib",Wr[Wr.Bzlib=1]="Bzlib",Wr[Wr.lzo1x=2]="lzo1x",Wr[Wr.HeaderStripping=3]="HeaderStripping";const Hr=[{id:sr.SeekHead,flag:"seekHeadSeen"},{id:sr.Info,flag:"infoSeen"},{id:sr.Tracks,flag:"tracksSeen"},{id:sr.Cues,flag:"cuesSeen"}],Vr=10485760;class jr extends wi{constructor(e){super(e),this.readMetadataPromise=null,this.segments=[],this.currentSegment=null,this.currentTrack=null,this.currentCluster=null,this.currentBlock=null,this.currentBlockAdditional=null,this.currentCueTime=null,this.currentDecodingInstruction=null,this.currentTagTargetIsMovie=!0,this.currentSimpleTagName=null,this.currentAttachedFile=null,this.isWebM=!1,this.reader=e._reader}async getTrackBackings(){return await this.readMetadata(),this.segments.flatMap(e=>e.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||i<this.currentSegment.elementEndPos;){let e=this.reader.requestSliceRange(i,2,ur);if(de(e)&&(e=await e),!e)break;const t=i,r=gr(e);if(!r||!cr.includes(r.id)&&r.id!==sr.Void){const e=await Tr(this.reader,t,cr,Math.min(this.currentSegment.elementEndPos??1/0,t+Vr));if(e){i=e;continue}break}const{id:a,size:s}=r,n=e.filePos,o=Hr.findIndex(e=>e.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;e<n.cuePoints.length-1;e++){const t=n.cuePoints[e],i=n.cuePoints[e+1];t.time===i.time&&(n.cuePoints.splice(e+1,1),e--)}}let a=null,s=-1/0;for(const n of this.currentSegment.tracks)n.cuePoints.length>s&&(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<u.blocks.length;r++){const e=u.blocks[r];e.timestamp+=c.timestamp,t||(t=e.lacing!==Or.None)}u.presentationTimestamps=u.blocks.map((e,t)=>({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let r=0;r<u.presentationTimestamps.length;r++){const t=u.presentationTimestamps[r],i=u.blocks[t.blockIndex];if(null===u.firstKeyFrameTimestamp&&i.isKeyFrame&&(u.firstKeyFrameTimestamp=i.timestamp),r<u.presentationTimestamps.length-1){const e=u.presentationTimestamps[r+1];i.duration=e.timestamp-i.timestamp}else 0===i.duration&&null!=e.defaultDuration&&i.lacing===Or.None&&(i.duration=e.defaultDuration)}t&&(this.expandLacedBlocks(u.blocks,e),u.presentationTimestamps=u.blocks.map((e,t)=>({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<e.length;i++){const r=e[i];if(r.lacing===Or.None)continue;r.decoded||(r.data=this.decodeBlockData(t,r.data),r.decoded=!0);const a=bo.tempFromBytes(r.data),s=[],n=So(a)+1;switch(r.lacing){case Or.Xiph:{let e=0;for(let t=0;t<n-1;t++){let t=0;for(;a.bufferPos<a.length;){const i=So(a);if(t+=i,i<255){s.push(t),e+=t;break}}}s.push(a.length-(a.bufferPos+e))}break;case Or.FixedSize:{const e=a.length-1,t=Math.floor(e/n);for(let i=0;i<n;i++)s.push(t)}break;case Or.Ebml:{const e=hr(a);l(null!==e);let t=e;s.push(t);let i=t;for(let r=1;r<n-1;r++){const e=a.bufferPos,r=hr(a);l(null!==r);t+=r-((1<<7*(a.bufferPos-e)-1)-1),s.push(t),i+=t}s.push(a.length-(a.bufferPos+i))}break;default:l(!1)}l(s.length===n),e.splice(i,1);const o=r.duration||n*(t.defaultDuration??0);for(let t=0;t<n;t++){const c=s[t],l=To(a,c),u=r.timestamp+o*t/n,d=o/n;e.splice(i+t,0,{timestamp:u,duration:d,isKeyFrame:r.isKeyFrame,data:l,lacing:Or.None,decoded:!0,postProcessed:!1,mainAdditional:r.mainAdditional})}i+=n,i--}}async loadSegmentMetadata(e){for(const t of e.seekEntries){if(t.id!==sr.Tags||e.tagsSeen){if(t.id!==sr.Attachments||e.attachmentsSeen)continue}else;let i=this.reader.requestSliceRange(e.dataStartPos+t.segmentPosition,2,ur);if(de(i)&&(i=await i),!i)continue;const r=gr(i);if(!r||r.id!==t.id)continue;const{size:a}=r;Nr(a),l(!this.currentSegment),this.currentSegment=e;let s=this.reader.requestSlice(i.filePos,a);de(s)&&(s=await s),s&&this.readContiguousElements(s),this.currentSegment=null,t.id===sr.Tags?e.tagsSeen=!0:t.id===sr.Attachments&&(e.attachmentsSeen=!0)}}readContiguousElements(e,t){for(;e.remainingLength>=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;r<t;r++)i<<=8n,i+=BigInt(So(e));return i})(e,a);break;case sr.FileName:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileName=yr(e,a);break;case sr.FileMediaType:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileMediaType=kr(e,a);break;case sr.FileData:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileData=To(e,a);break;case sr.FileDescription:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileDescription=yr(e,a);break;case sr.ContentEncodings:if(!this.currentTrack)break;this.readContiguousElements(e.slice(s,a)),this.currentTrack.decodingInstructions.sort((e,t)=>t.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<t.endTimestamp}},i,i,t)}async getNextPacket(e,t){const i=this.packetToClusterLocation.get(e);if(void 0===i)throw new Error("Packet was not created from this track.");return this.performClusterLookup(i.cluster,e=>{if(e===i.cluster){const t=e.trackData.get(this.internalTrack.id);if(i.blockIndex+1<t.blocks.length)return{blockIndex:i.blockIndex+1,correctBlockFound:!0}}else{if(e.trackData.get(this.internalTrack.id))return{blockIndex:0,correctBlockFound:!0}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)}async getKeyPacket(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=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<t.endTimestamp}},i,i,t)}async getNextKeyPacket(e,t){const i=this.packetToClusterLocation.get(e);if(void 0===i)throw new Error("Packet was not created from this track.");return this.performClusterLookup(i.cluster,e=>{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<h.clusterPosition)){const e=this.internalTrack.cuePoints[d-1];l(!e||e.time<h.time);const i=e?.time??-1/0;return this.performClusterLookup(null,t,i,r,a)}return c?this.fetchPacketInCluster(c,u,a):null}}class Xr extends Kr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getType(){return"video"}getCodec(){return this.internalTrack.info.codec}getCodedWidth(){return this.internalTrack.info.width}getCodedHeight(){return this.internalTrack.info.height}getSquarePixelWidth(){return this.internalTrack.info.squarePixelWidth}getSquarePixelHeight(){return this.internalTrack.info.squarePixelHeight}getRotation(){return this.internalTrack.info.rotation}async getColorSpace(){const e=await this.getDecoderConfig();return e?{primaries:e.colorSpace?.primaries,transfer:e.colorSpace?.transfer,matrix:e.colorSpace?.matrix,fullRange:e.colorSpace?.fullRange}:this.internalTrack.info.colorSpace}async canBeTransparent(){return this.internalTrack.info.alphaMode||"prores"===this.internalTrack.info.codec&&("ap4h"===this.internalTrack.info.proresFormat||"ap4x"===this.internalTrack.info.proresFormat)}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??(this.decoderConfigPromise=(async()=>{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<i;){const t=null!==i?Math.min(65536,i-a):65536;let s=e.requestSliceRange(a,4,t);if(de(s)&&(s=await s),!s||s.length<4)break;for(;s.remainingLength>=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<<t):2===i?144*r/a:12*r/a*4),n=(e.reader.fileSize-e.firstFrameHeaderPos)/s;return Math.round(n)*e.firstFrameHeader.audioSamplesInFrame/e.firstFrameHeader.sampleRate}var t,i,r,a;return null}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return V}getCodec(){return"mp3"}getInternalCodecId(){return null}getNumberOfChannels(){return l(this.demuxer.firstFrameHeader),bi(this.demuxer.firstFrameHeader.channel)}getSampleRate(){return l(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate}getDisposition(){return{...Ee}}async getDecoderConfig(){return l(this.demuxer.firstFrameHeader),{codec:"mp3",numberOfChannels:bi(this.demuxer.firstFrameHeader.channel),sampleRate:this.demuxer.firstFrameHeader.sampleRate}}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<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(i,t);await this.demuxer.advanceReader()}}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Jr=1399285583,Zr=new Uint32Array(256);for(let hc=0;hc<256;hc++){let e=hc<<24;for(let t=0;t<8;t++)e=2147483648&e?e<<1^79764919:e<<1;Zr[hc]=e>>>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<e.length;a++){const t=e[a];r=(r<<8^Zr[r>>>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;d<o;d++)c[d]=So(e);const l=27+o,u=c.reduce((e,t)=>e+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<t-3;){const t=Eo(e),i=79;if((255&t)===i||(t>>>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(t<e.lacingValues.length);let i=0;for(let l=0;l<t;l++)i+=e.lacingValues[l];let r=e,a=i,s=t;const n=[];e:for(;;){let t=this.reader.requestSlice(r.dataStartPos,r.dataSize);de(t)&&(t=await t),l(t);const o=To(t,r.dataSize);for(;;){if(s===r.lacingValues.length){n.push(o.subarray(i,a));break}const e=r.lacingValues[s];if(a+=e,e<255){n.push(o.subarray(i,a));break e}s++}let c=r.headerStartPos+r.totalSize;for(;;){let t=this.reader.requestSliceRange(c,ia,ra);if(de(t)&&(t=await t),!t)return null;const i=aa(t);if(!i)return null;if(r=i,r.serialNumber===e.serialNumber)break;c=r.headerStartPos+r.totalSize}i=0,a=0,s=0}const o=n.reduce((e,t)=>e+t.length,0);if(0===o)return null;const c=new Uint8Array(o);let u=0;for(let l=0;l<n.length;l++){const e=n[l];c.set(e,u),u+=e.length}return{data:c,endPage:r,endSegmentIndex:s}}async findNextPacketStart(e){if(e.endSegmentIndex<e.endPage.lacingValues.length-1)return{startPage:e.endPage,startSegmentIndex:e.endSegmentIndex+1};if(!!(4&e.endPage.headerType))return null;let t=e.endPage.headerStartPos+e.endPage.totalSize;for(;;){let i=this.reader.requestSliceRange(t,ia,ra);if(de(i)&&(i=await i),!i)return null;const r=aa(i);if(!r)return null;if(r.serialNumber===e.endPage.serialNumber)return{startPage:r,startSegmentIndex:0};t=r.headerStartPos+r.totalSize}}async getMimeType(){await this.readMetadata();return(e=>{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.totalSize<s;){const e=a.headerStartPos,t=Math.floor((e+s)/2);let r=t;for(;;){const e=Math.min(r+65307,s-ia);let o=this.demuxer.reader.requestSlice(r,e-r);de(o)&&(o=await o),l(o);if(!sa(o,e)){s=t+ia;continue e}let c=this.demuxer.reader.requestSliceRange(o.filePos,ia,ra);de(c)&&(c=await c),l(c);const u=aa(c);l(u);let d=!1;if(u.serialNumber===this.bitstream.serialNumber)d=!0;else{let e=this.demuxer.reader.requestSlice(u.headerStartPos,u.totalSize);de(e)&&(e=await e),l(e);const t=To(e,u.totalSize);d=ea(t)===u.checksum}if(!d){r=u.headerStartPos+4;continue}if(d&&u.serialNumber!==this.bitstream.serialNumber){r=u.headerStartPos+u.totalSize;continue}if(!(-1===u.granulePosition)){this.granulePositionToTimestampInSamples(u.granulePosition)>i?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&&f<r.startSegmentIndex)){let r=this.createEncodedPacketFromOggPacket(e,{timestampInSamples:d,vorbisLastBlocksize:k?.vorbisBlockSize??null},t);l(r);let a=this.encodedPacketToMetadata.get(r);if(l(a),h||e.endPage.headerStartPos!==m.headerStartPos||e.endSegmentIndex!==p?d+=a.durationInSamples:(d=this.granulePositionToTimestampInSamples(c.granulePosition),h=!0,r=this.createEncodedPacketFromOggPacket(e,{timestampInSamples:d-a.durationInSamples,vorbisLastBlocksize:k?.vorbisBlockSize??null},t),l(r),a=this.encodedPacketToMetadata.get(r),l(a)),g=r,k=a,h&&(Math.max(d,0)>i||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.timestamp<e;){const i=await this.getNextPacket(a,t);if(!i||i.timestamp>e)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<r.headerStartPos);if(!t)return null;r=t,a=r.lacingValues.length}if(l(-1!==a),a===r.lacingValues.length){const t=e[e.indexOf(r)+1];l(t),r=t,a=0}return{page:r,segmentIndex:a}},la=(e,t,i)=>{if(i>0)return{page:t,segmentIndex:i-1};const r=O(e,e=>e.headerStartPos<t.headerStartPos);return r?{page:r,segmentIndex:r.lacingValues.length-1}:null};var ua,da;(da=ua||(ua={}))[da.PCM=1]="PCM",da[da.IEEE_FLOAT=3]="IEEE_FLOAT",da[da.ALAW=6]="ALAW",da[da.MULAW=7]="MULAW",da[da.EXTENSIBLE=65534]="EXTENSIBLE";class ha extends wi{constructor(e){super(e),this.metadataPromise=null,this.dataStart=-1,this.dataSize=-1,this.audioInfo=null,this.trackBackings=[],this.lastKnownPacketIndex=0,this.metadataTags={},this.reader=e._reader}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{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<s;){let e=this.reader.requestSlice(c,8);if(de(e)&&(e=await e),!e)break;const t=Oo(e,4),a=Co(e,i),l=e.filePos;if(r&&0===n&&"ds64"!==t)throw new Error('Invalid RF64 file: First chunk must be "ds64".');if("fmt "===t)await this.parseFmtChunk(l,a,i);else if("data"===t){if(o??(o=a),this.dataStart=e.filePos,this.dataSize=Math.min(o,(s??1/0)-this.dataStart),null===this.reader.fileSize)break}else if("ds64"===t){let e=this.reader.requestSlice(l,a);if(de(e)&&(e=await e),!e)break;const t=Ro(e,i);o=Ro(e,i),s=Math.min(t+8,this.reader.fileSize??1/0)}else"LIST"===t?await this.parseListChunk(l,a,i):"ID3 "!==t&&"id3 "!==t||await this.parseId3Chunk(l,a);c=l+a+(1&a),n++}if(!this.audioInfo)throw new Error('Invalid WAVE file - missing "fmt " chunk');if(-1===this.dataStart)throw new Error('Invalid WAVE file - missing "data" chunk');const u=this.audioInfo.blockSizeInBytes;this.dataSize=Math.floor(this.dataSize/u)*u,this.trackBackings.push(new ma(this))})())}async parseFmtChunk(e,t,i){let r=this.reader.requestSlice(e,t);if(de(r)&&(r=await r),!r)return;let a=vo(r,i);const s=vo(r,i),n=Co(r,i);r.skip(4);const o=vo(r,i);let c;if(c=14===t?8:vo(r,i),t>=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 (${c}). Only 32 and 64 bits are supported.`);this.audioInfo={format:a,numberOfChannels:s,sampleRate:n,sampleSizeInBytes:Math.ceil(c/8),blockSizeInBytes:o}}async parseListChunk(e,t,i){var r,a,s,n,o,c,l,u,d,h,f;let m=this.reader.requestSlice(e,t);if(de(m)&&(m=await m),!m)return;const p=Oo(m,4);if("INFO"!==p&&"INF0"!==p)return;let g=m.filePos;for(;g<=e+t-8;){m.filePos=g;const e=Oo(m,4),t=Co(m,i),p=To(m,t);let k=0;for(let i=0;i<p.length&&0!==p[i];i++)k++;const y=String.fromCharCode(...p.subarray(0,k));switch((r=this.metadataTags).raw??(r.raw={}),this.metadataTags.raw[e]=y,e){case"INAM":case"TITL":(a=this.metadataTags).title??(a.title=y);break;case"TIT3":(s=this.metadataTags).description??(s.description=y);break;case"IART":(n=this.metadataTags).artist??(n.artist=y);break;case"IPRD":(o=this.metadataTags).album??(o.album=y);break;case"IPRT":case"ITRK":case"TRCK":{const e=y.split("/"),t=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&((c=this.metadataTags).trackNumber??(c.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&((l=this.metadataTags).tracksTotal??(l.tracksTotal=i))}break;case"ICRD":case"IDIT":{const e=new Date(y);Number.isNaN(e.getTime())||((u=this.metadataTags).date??(u.date=e))}break;case"YEAR":{const e=Number.parseInt(y,10);Number.isInteger(e)&&e>0&&((d=this.metadataTags).date??(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":(h=this.metadataTags).genre??(h.genre=y);break;case"ICMT":case"CMNT":case"COMM":(f=this.metadataTags).comment??(f.comment=y)}g+=8+t+(1&t)}}async parseId3Chunk(e,t){let i=this.reader.requestSlice(e,t);if(de(i)&&(i=await i),!i)return;const r=$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<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(i,t);await this.demuxer.advanceReader()}}finally{i()}}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}class ba extends wi{constructor(e){super(e),this.loadedSamples=[],this.metadataPromise=null,this.trackBacking=null,this.metadataTags={},this.audioInfo=null,this.lastLoadedPos=null,this.blockingBit=null,this.readingMutex=new B,this.lastSampleLoaded=!1,this.reader=e._reader}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}async getTrackBackings(){return await this.readMetadata(),l(this.trackBacking),[this.trackBacking]}async getMimeType(){return"audio/flac"}async readMetadata(){return this.metadataPromise??(this.metadataPromise=(async()=>{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||t<this.reader.fileSize;){let i=this.reader.requestSlice(t,4);if(de(i)&&(i=await i),t+=4,null===i)throw new Error(`Metadata block at position ${t} is too small! Corrupted file.`);l(i);const r=So(i),a=Io(i),s=0!==(128&r);switch(127&r){case It.STREAMINFO:{let e=this.reader.requestSlice(t,a);if(de(e)&&(e=await e),l(e),null===e)throw new Error(`StreamInfo block at position ${t} is too small! Corrupted file.`);const i=To(e,34),r=new _e(i),s=r.readBits(16),n=r.readBits(16),o=r.readBits(24),c=r.readBits(24),u=r.readBits(20),d=r.readBits(3)+1;r.readBits(5);const h=r.readBits(36);r.skipBits(128);const f=new Uint8Array(42);f.set(new Uint8Array([102,76,97,67]),0),f.set(new Uint8Array([128,0,0,34]),4),f.set(i,8),this.audioInfo={numberOfChannels:d,sampleRate:u,totalSamples:h,minimumBlockSize:s,maximumBlockSize:n,minimumFrameSize:o,maximumFrameSize:c,description:f},this.trackBacking=new wa(this);break}case It.VORBIS_COMMENT:{let e=this.reader.requestSlice(t,a);de(e)&&(e=await e),l(e),Ct(To(e,a),this.metadataTags);break}case It.PICTURE:{let i=this.reader.requestSlice(t,a);de(i)&&(i=await i),l(i);const r=Bo(i),s=Bo(i),n=k.decode(To(i,s)),o=Bo(i),c=k.decode(To(i,o));i.skip(16);const u=Bo(i),d=To(i,u);(e=this.metadataTags).images??(e.images=[]),this.metadataTags.images.push({data:d,mimeType:n,kind:3===r?"coverFront":4===r?"coverBack":"unknown",description:c});break}}if(t+=a,s){this.lastLoadedPos=t;break}}if(!this.audioInfo)throw new Error("Missing STREAMINFO metadata block! Corrupted FLAC file.")})())}async readNextFlacFrame({startPos:e,isFirstPacket:t}){l(this.audioInfo);const i=this.audioInfo.maximumBlockSize*this.audioInfo.numberOfChannels*4+16+2,r=this.audioInfo.minimumFrameSize||10,a=(this.audioInfo.maximumFrameSize||i)+16,s=await this.reader.requestSliceRange(e,16,a);if(!s)return null;const n=this.readFlacFrameHeader({slice:s,isFirstPacket:t});if(!n)return null;for(s.filePos=e+r;;){if(s.filePos>s.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;o<n;o++)r.unshift(i.readBits(1));for(let o=0;o<a;o++)for(let e=0;e<8;e++){const t=s.readBits(1);e<2||r.unshift(t)}return r.reduce((e,t,i)=>e|t<<i,0)})(e),c=((e,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<c;){const t=e.readBits(8),i=e.readBits(8),r=e.pos+8*i;if(5===t&&i>=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<a;){const t=e.readBits(8),i=e.readBits(8),r=e.pos+8*i;if(106===t)s=!0;else if(122===t||204===t)n=!0;else if(123===t)o=!0;else if(5===t&&i>=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<t?e+i:e}}const Ba=(e,t,i)=>{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(;r<t;){const e=await a.readPacketHeader(r);if(!e)return null;if(e.pid===o&&1===e.payloadUnitStartIndicator){const e=await a.readSection(r,i);if(!e)return null;const t=Ba(a,e,!1);if(t&&null!==t.pts)return{pesPacketHeader:t,section:e}}r+=a.packetStride}return null},u=this.elementaryStream.firstSection;l(u);const h=Ba(a,u,!0);if(l(h),r<h.pts)return null;let f;const m=this.elementaryStream.referencePesPackets,p=A(m,r,e=>e.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<b+1;e++){let e=y.sectionStartPos-a.packetStride;for(;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<b;r++){let t=e.sectionStartPos-a.packetStride;for(;t>=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<s)return!1;if(r<i.length-1){const e=i[r+1];if(e.pts<t.pts)return!1;if(e.sectionStartPos-t.sectionStartPos<s)return!1}}return i.splice(r+1,0,t),!0};class Da{constructor(e,t){this.currentPos=0,this.pesPackets=[],this.currentPesPacketIndex=0,this.currentPesPacketPos=0,this.endPos=0,this.lastSuppliedPesPacket=null,this.nextPts=null,this.suppliedPacket=null,this.elementaryStream=e,this.pid=e.pid,this.demuxer=e.demuxer,this.startingPesPacket=t}ensureBuffered(e){const t=this.endPos-this.currentPos;return t>=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<t;){let e;if(0===this.pesPackets.length)e=this.startingPesPacket;else{let t=d(this.pesPackets).sectionEndPos;for(l(null!==t);;){const i=await this.demuxer.readPacketHeader(t);if(!i)return;if(i.pid===this.pid){const i=await this.demuxer.readSection(t,!0);if(!i)return;const r=Ea(this.demuxer,i,!1);if(r){e=r;break}}t+=this.demuxer.packetStride}}this.pesPackets.push(e),this.endPos+=e.data.byteLength}}readBytes(e){const t=this.getCurrentPesPacket(),i=this.currentPos-this.currentPesPacketPos,r=i+e;if(this.currentPos+=e,r<=t.data.byteLength)return t.data.subarray(i,r);const a=new Uint8Array(e);a.set(t.data.subarray(i));let s=t.data.byteLength-i;for(;;){this.advanceCurrentPacket();const t=this.getCurrentPesPacket(),i=e-s;if(i<=t.data.byteLength){a.set(t.data.subarray(0,i),s);break}a.set(t.data,s),s+=t.data.byteLength}return a}readU8(){let e=this.getCurrentPesPacket();const t=this.currentPos-this.currentPesPacketPos;return this.currentPos++,t<e.data.byteLength?e.data[t]:(this.advanceCurrentPacket(),e=this.getCurrentPesPacket(),e.data[0])}seekTo(e){if(e!==this.currentPos){if(e<this.currentPos)for(;e<this.currentPesPacketPos;){this.currentPesPacketIndex--;const e=this.getCurrentPesPacket();this.currentPesPacketPos-=e.data.byteLength}else for(;;){const t=this.getCurrentPesPacket();if(e<this.currentPesPacketPos+t.data.byteLength)break;this.currentPesPacketPos+=t.data.byteLength,this.currentPesPacketIndex++}this.currentPos=e}}skip(e){this.seekTo(this.currentPos+e)}advanceCurrentPacket(){this.currentPesPacketPos+=this.getCurrentPesPacket().data.byteLength,this.currentPesPacketIndex++}async markNextPacket(){l(!this.suppliedPacket);const e=this.elementaryStream;if("video"===e.info.type){const t=e.info.codec,i=1024;if("avc"!==t&&"hevc"!==t)throw new Error("Unhandled.");const r="avc"===t?1:2;let a=null,s=!1,n=0;for(;;){let e=this.ensureBuffered(i);if(de(e)&&(e=await e),0===e)break;const o=this.currentPos,c=this.readBytes(e),l=c.byteLength;let u=0;for(;u<l;){const e=c.indexOf(0,u);if(-1===e||e>=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(e<i)break}if(null!==a&&this.endPos>a){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<r;){const i=this.readU8();if("aac"===t){if(255!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(9);if(de(r)&&(r=await r),r<9)return;const a=this.readBytes(9),s=pa(bo.tempFromBytes(a));if(s){this.seekTo(t);let i=this.ensureBuffered(s.frameLength);return de(i)&&(i=await i),this.supplyPacket(i,Math.round(9216e4/e.info.sampleRate))}this.seekTo(t+1)}else{if("mp3"!==t){if("ac3"===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=a[4]>>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<i)break;this.seekTo(t+e);const a=Kt(this.readBytes(10));if(!a)break;e+=a.frameSize,o=e}}const c=s?.sampleCount??n.asset?.sampleCount;if(void 0===c){this.seekTo(t+1);continue}this.seekTo(t),r=this.ensureBuffered(o),de(r)&&(r=await r);const l=Math.round(c*Ta/e.info.sampleRate);return this.supplyPacket(r,l)}throw new Error("Unhandled.")}{if(255!==i)continue;this.skip(-1);const t=this.currentPos;let r=this.ensureBuffered(4);if(de(r)&&(r=await r),r<4)return;const a=this.readBytes(4),s=g(a).getUint32(0),n=pi(s,null);if(n.header){this.seekTo(t);let i=this.ensureBuffered(n.header.totalSize);de(i)&&(i=await i);const r=n.header.audioSamplesInFrame*Ta/e.info.sampleRate;return this.supplyPacket(i,Math.round(r))}this.seekTo(t+1)}}}if(r<i)break}}}supplyPacket(e,t){const i=this.getCurrentPesPacket();let r;if(this.lastSuppliedPesPacket===i)l(null!==this.nextPts),r=this.nextPts;else{if(null===i.pts)throw new Error(Pa);r=i.pts,Aa(this.elementaryStream,i)}this.lastSuppliedPesPacket=i,this.nextPts=r+t;const a=i.sectionStartPos,s=a+(this.currentPos-this.currentPesPacketPos),n=this.readBytes(e);let o=i.randomAccessIndicator;if(0===o&&!this.elementaryStream.canBeTrustedWithKeyPackets)if("audio"===this.elementaryStream.info.type)o=1;else if(this.elementaryStream.info.decoderConfig){const e="key"===Pt(this.elementaryStream.info.codec,this.elementaryStream.info.decoderConfig,n);o=Number(e)}this.suppliedPacket={pts:r,data:n,sequenceNumber:s,sectionStartPos:a,randomAccessIndicator:o},this.pesPackets.splice(0,this.currentPesPacketIndex),this.currentPesPacketIndex=0}}class Ma{constructor(e,t){this.decodeOrderPackets=[],this.reorderBuffer=[],this.presentationOrderPackets=[],this.reachedEnd=!1,this.lastDuration=0,this.backing=e,this.context=t,this.reorderSize=e.getReorderSize(),l(this.reorderSize>=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;i<this.reorderBuffer.length;i++)this.reorderBuffer[i].pts<this.reorderBuffer[e].pts&&(e=i);const t=this.reorderBuffer[e];this.presentationOrderPackets.push(t),this.reorderBuffer.splice(e,1)}}flushReorderBuffer(){this.reorderBuffer.sort((e,t)=>e.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<e.length;s++){const n=e[s];'"'===n?a=!a:"="!==n||r||a?","!==n||a?r?i+=n:t+=n:(t&&(this._attributes[t.trim().toLowerCase()]=i),t="",i="",r=!1):r=!0}t&&(this._attributes[t.trim().toLowerCase()]=i)}get(e){return this._attributes[e.toLowerCase()]??null}getAsNumber(e){const t=this.get(e);if(null===t)return null;const i=Number(t);return Number.isFinite(i)?i:null}merge(e){Object.assign(this._attributes,e._attributes)}}class Qa{constructor(e,t,i){this.nextInputCacheAge=0,this.inputCache=[],this.trackBackingsPromise=null,this.firstSegment=null,this.firstSegmentFirstTimestamps=new WeakMap,this.firstTimestampCache=new WeakMap,this.input=e,this.path=t,this.trackDeclarations=i}async getDurationFromMetadata(e){const t=await this.getSegmentAt(1/0,{skipLiveWait:e.skipLiveWait});return t?t.timestamp+t.duration:null}async getUnixTimeForTimestamp(e){let t=await this.getSegmentAt(e,{});if(t??(t=await this.getFirstSegment({})),!t||null===t.unixEpochTimestamp)return null;const i=e-t.timestamp;return t.unixEpochTimestamp+i}async getTrackBackings(){return this.trackBackingsPromise??(this.trackBackingsPromise=(async()=>{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<e.targetPos&&!e.aborted;)if(t){const{done:i,value:r}=await t.read();if(i)throw this._orchestrator.onWorkerFinished(e),new Error("Blob reader stopped unexpectedly before all requested data was read.");if(e.aborted)break;this._dispatchRead(e.currentPos,e.currentPos+r.length),this._orchestrator.supplyWorkerData(e,r)}else{const t=await this._blob.slice(e.currentPos,e.targetPos).arrayBuffer();if(e.aborted)break;this._dispatchRead(e.currentPos,e.currentPos+t.byteLength),this._orchestrator.supplyWorkerData(e,new Uint8Array(t))}this._orchestrator.signalWorkerStoppedRunning(e),e.aborted&&await(t?.cancel())}_dispose(){this._orchestrator.dispose()}}const cs=(e,t,i)=>{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&&r<i?null:{offset:i,length:null!==r?r-i+1:null}};class fs extends ts{constructor(e,t={}){if(!(e instanceof ReadableStream))throw new TypeError("stream must be a ReadableStream.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(void 0!==t.handleUnhandledError&&"function"!==typeof t.handleUnhandledError)throw new TypeError("options.handleUnhandledError, 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.");super(),this._reader=null,this._cache=[],this._pendingSlices=[],this._currentIndex=0,this._targetIndex=0,this._maxRequestedIndex=0,this._endIndex=null,this._pulling=!1,this._cacheMissErrorMessage="Attempted to read data from an already-evicted part of the cache. With ReadableStreamSource, you must access the data more sequentially or increase the size of its cache.",this._stream=e,this._maxCacheSize=t.maxCacheSize??33554432,this._handleUnhandledError=t.handleUnhandledError}_getFileSize(){return this._endIndex}_read(e,t){if(null!==this._endIndex&&t>this._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<this._cache.length;l++){const i=this._cache[l];if(i.start>=t)break;const r=Math.max(e,i.start);r>a&&this._throwDueToCacheMiss();const n=Math.min(t,i.end);r<n&&(s.set(i.bytes.subarray(r-i.start,n-i.start),r-e),a=n)}if(a===t)return{bytes:s,view:g(s),offset:e};this._currentIndex>a&&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._currentIndex<this._targetIndex&&!this._disposed;){const{done:e,value:t}=await this._reader.read();if(e){for(const e of this._pendingSlices)e.resolve(null);this._pendingSlices.length=0,this._endIndex=this._currentIndex;break}const i=this._currentIndex,r=this._currentIndex+t.byteLength;this._dispatchRead(i,r);for(let a=0;a<this._pendingSlices.length;a++){const e=this._pendingSlices[a],s=Math.max(i,e.start),n=Math.min(r,e.end);s<n&&(e.bytes.set(t.subarray(s-i,n-i),s-e.start),n===e.end&&(e.resolve({bytes:e.bytes,view:g(e.bytes),offset:e.start}),this._pendingSlices.splice(a,1),a--))}for(this._cache.push({start:i,end:r,bytes:t,view:g(t),age:0});this._cache.length>0;){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<this.cache.length;i++){const r=this.cache[i];if(r.start>=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<a&&p.push({start:m,end:a}),m=o,h){const i=Math.max(e,r.start),a=Math.min(t,r.end);if(i<a){const t=i-e;h.set(r.bytes.subarray(i-r.start,a-r.start),t),t===f&&(f=a-e)}}r.age=this.nextAge++}m<n&&p.push({start:m,end:n})}else p.push({start:s,end:n});if(h&&f>=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):i<r&&w.push({start:i,end:r})}const T=h&&{start:e,bytes:h,holes:w,resolve:y,reject:b};e:for(const l of p){for(const i of this.workers){if(this.checkHoleAgainstWorker(i,l,T?[T]:[])){this.checkQueuedReadsAgainstWorker(i);continue e}}const e=l.end<n||null!==this.fileSize,t=this.createWorker(l.start,l.end,e);if(t)T&&(t.pendingSlices=[T]),this.runWorker(t);else{let t=A(this.queuedReads,l.start,e=>e.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+1<this.queuedReads.length;){const e=this.queuedReads[t+1];if(e.hole.start>i.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<i.length;t++){const r=i[t];e.pendingSlices.includes(r)||e.pendingSlices.push(r)}return e.running||this.runWorker(e),!0}return!1}checkQueuedReadsAgainstWorker(e){let t=!1;for(let i=0;i<this.queuedReads.length;i++){const r=this.queuedReads[i];if(this.checkHoleAgainstWorker(e,r.hole,r.pendingSlices))this.queuedReads.splice(i,1),i--,t=!0;else if(t)break}}createWorker(e,t,i){if(this.workers.length>=this.options.maxWorkerCount){let e=null,t=null;for(let i=0;i<this.workers.length;i++){const r=this.workers[i];r.running||0!==r.pendingSlices.length||e&&!(r.age<e.age)||(t=i,e=r)}if(!e)return null;l(null!==t),l(0===e.pendingSlices.length),this.workers.splice(t,1),this.options.onIdleWorkerRemoved?.(e)}const r={startPos:e,currentPos:e,targetPos:t,strictTarget:i,running:!1,aborted:this.disposed,pendingSlices:[],age:this.nextAge++};return this.workers.push(r),r}runWorker(e){l(!e.running),l(e.currentPos<e.targetPos),e.running=!0,e.age=this.nextAge++,this.options.runWorker(e).catch(t=>{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;r<this.queuedReads.length;r++){this.queuedReads[r].age<this.queuedReads[e].age&&(e=r)}const t=this.queuedReads[e],i=this.createWorker(t.hole.start,t.hole.end,t.strictTarget);if(!i)return;this.queuedReads.splice(e,1),i.pendingSlices=t.pendingSlices,this.runWorker(i)}})}supplyWorkerData(e,t){l(!e.aborted);const i=e.currentPos,r=i+t.length;this.insertIntoCache({start:i,end:r,bytes:t,view:g(t),age:this.nextAge++}),e.currentPos+=t.length,e.currentPos>e.targetPos&&(e.targetPos=e.currentPos,this.checkQueuedReadsAgainstWorker(e));for(let a=0;a<e.pendingSlices.length;a++){const s=e.pendingSlices[a],n=Math.max(i,s.start),o=Math.min(r,s.start+s.bytes.length);n<o&&s.bytes.set(t.subarray(n-i,o-i),n-s.start);for(let e=0;e<s.holes.length;e++){const t=s.holes[e];i<=t.start&&r>t.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;a<this.workers.length;a++){const t=this.workers[a];e===t||t.running||fe(i,r,t.currentPos,t.targetPos)&&(this.workers.splice(a,1),this.options.onIdleWorkerRemoved?.(t),a--)}}supplyFileSize(e){l(null===this.fileSize),this.fileSize=e;for(const t of this.workers){t.targetPos=Math.min(t.targetPos,e),t.strictTarget=!0;for(let i=0;i<t.pendingSlices.length;i++){const r=t.pendingSlices[i];for(const a of r.holes)if(a.end>e){r.resolve(null),t.pendingSlices.splice(i,1),i--;break}}}for(let t=0;t<this.queuedReads.length;t++){const i=this.queuedReads[t];if(i.hole.start>=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<i.pendingSlices.length;t++){const r=i.pendingSlices[t];r.start>=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<this.cache.length;i++){const t=this.cache[i];if(e.end<=t.start)break;if(e.end>=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;i<this.cache.length;i++){const r=this.cache[i];r.age<t.age&&(e=i,t=r)}if(this.currentCacheSize-t.bytes.length<=this.options.maxCacheSize)break;this.cache.splice(e,1),this.currentCacheSize-=t.bytes.length}}dispose(){for(const e of this.workers){for(const t of e.pendingSlices)t.reject(new ko);e.pendingSlices.length=0,e.aborted=!0,e.running||this.options.onIdleWorkerRemoved?.(e)}for(const e of this.queuedReads)for(const t of e.pendingSlices)t.reject(new ko);this.workers.length=0,this.cache.length=0,this.queuedReads.length=0,this.disposed=!0}}class gs extends ts{constructor(e,t,i){if(super(),this._ref=null,e._disposed)throw new Error("Cannot create a slice of a disposed source.");this._baseSource=e,this._offset=t,this._length=i??null}_getFileSize(){const e=this._baseSource._getFileSize();return void 0===e?null!==this._length?this._length:void 0: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._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.sequenceNumber<e&&(r=y.timestamp+y.duration,c=y.firstSegment,u=y.initSegment,m=y.lastProgramDateTimeSeconds,a=null!==y.unixEpochTimestamp?y.unixEpochTimestamp+y.duration:null,y=null))};for(let l=0;l<e.length;l++){const T=e[l];if(i){if(!T.startsWith("#")){if(!y){if(null===s)throw new Error("Invalid M3U8 file; a segment must be preceded by an #EXTINF tag.");let e=n;if(e&&"AES-128"===e.method&&!e.iv){const t=new Uint8Array(Ri),i=g(t);i.setUint32(8,Math.floor(o/2**32)),i.setUint32(12,o),e={...e,iv:t}}const t=ke(this.rootPath,T),i={timestamp:r,unixEpochTimestamp:a,firstSegment:c,sequenceNumber:o,location:{path:t,offset:f?.offset??0,length:f?.length??null},duration:s,encryption:e,initSegment:u,lastProgramDateTimeSeconds:m};c??(c=i),r+=s,null!==a&&(a+=s),this.segments.push(i)}s=null,null===f?h=null:f=null,w(o+1)}if(T.startsWith(Ua)){if(y){k=!0;continue}k||(null===m&&o>0&&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<Ri;t++){const r=-32+t;i[t]=parseInt(e.slice(r,r+2),16)}}const a=e.get("keyformat")??"identity";if("identity"!==a)throw new Error("For AES-128 encryption, only the 'identity' KEYFORMAT is currently supported. If you think other formats should be supported, please raise an issue.");n={method:"AES-128",keyUri:ke(this.rootPath,t),iv:i,keyFormat:a}}else{if("SAMPLE-AES"!==t&&"SAMPLE-AES-CTR"!==t)throw new Error(`Unsupported encryption method '${t}'. If you think this method should be supported, please raise an issue.`);{const i=e.get("uri");if(!i)throw new Error(`Invalid #EXT-X-KEY: ${t} requires a URI attribute.`);if("identity"===(e.get("keyformat")??"identity"))throw new Error("For SAMPLE-AES and SAMPLE-AES-CTR encryption, the 'identity' KEYFORMAT is not supported. If you think this format should be supported, please raise an issue.");let r=null;if(ws.test(i)){const e=i.indexOf(","),t=me(i.slice(e+1));if(t.length>=8&&112===t[4]&&115===t[5]&&115===t[6]&&104===t[7]){const e=g(t).getUint32(0);r=vi(t.subarray(8,Math.min(e,t.length)))}}n={method:t,psshBox:r}}}}else if(T.startsWith(Ha)){const e=T.slice(22),t=Number(e);if(!Number.isInteger(t)||t<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${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(r<this.segments.length-1||this.streamHasEnded||i)return this.segments[r];const a=this.segments[r];if(e<a.timestamp+a.duration)return a;await this.runUpdateSegments(),t.skipLiveWait&&(i=!0)}}async getNextSegment(e,t){const i=this.segments.indexOf(e);l(-1!==i);const r=i+1;let a=!!t.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){if(r<this.segments.length)return this.segments[r];if(this.streamHasEnded||a)return null;await this.runUpdateSegments(),t.skipLiveWait&&(a=!0)}}async getPreviousSegment(e){const t=this.segments.indexOf(e);return l(-1!==t),this.segments[t-1]??null}getInputForSegment(e){const t=e,i=this.inputCache.find(e=>e.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;e<l;e+=16)s.in.set(u.subarray(e,e+16)),s.decrypt(),d.set(s.out,e);if(l<c)n.enqueue(d),a+=l;else{const e=d[l-1];if(0===e||e>16)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<t.length;l++){const e=t[l];if(e.startsWith(Oa)){const a=l,s=t[++l];if(void 0===s)throw new Error("Incorrect M3U8 file; a line must follow the #EXT-X-STREAM-INF tag.");const n=ke(i,s),o=new Ga(e.slice(18));if(null===o.getAsNumber("bandwidth"))throw new Error("Invalid M3U8 file; #EXT-X-STREAM-INF tag requires a BANDWIDTH attribute with a valid numerical value.");r.push({fullPath:n,attributes:o,lineNumber:a,hasOnlyKeyPackets:!1})}else if(e.startsWith(La)){const t=new Ga(e.slice(26)),a=t.get("uri");if(null===a)throw new Error("Invalid M3U8 file; #EXT-X-I-FRAME-STREAM-INF tag requires a URI attribute.");if(null===t.getAsNumber("bandwidth"))throw new Error("Invalid M3U8 file; #EXT-X-I-FRAME-STREAM-INF tag requires a BANDWIDTH attribute with a valid numerical value.");const s=ke(i,a);r.push({fullPath:s,attributes:t,lineNumber:l,hasOnlyKeyPackets:!0})}else if(e.startsWith(za)){const t=new Ga(e.slice(13));if(null===t.get("type"))throw new Error("Invalid M3U8 file; #EXT-X-MEDIA tag requires a TYPE attribute.");if(null===t.get("group-id"))throw new Error("Invalid M3U8 file; #EXT-X-MEDIA tag requires a GROUP-ID attribute.");let r=null;const s=t.get("uri");null!==s&&(r=ke(i,s)),a.push({fullPath:r,attributes:t,lineNumber:l})}else if("#EXT-X-I-FRAMES-ONLY"===e);else if(e.startsWith(Ua)){const e=new Ts(this,i,null,t);return this.segmentedInputs=[e],this.hasMasterPlaylist=!1,void(this.trackBackings=await e.getTrackBackings())}}const s=[...new Set(a.filter(e=>"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+)$/);e&&(a=Number(e[1]),s=Number(e[2]))}r.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:V,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:m,pairingMask:1n<<BigInt(t),peakBitrate:g,averageBitrate:k,name:y,hasOnlyKeyPackets:e.hasOnlyKeyPackets,info:{type:"video",width:a,height:s}})}else{if(!s.includes(n))throw new Error(`Invalid M3U8 file; variant stream references video group "${n}" which is not defined in any #EXT-X-MEDIA tags.`);for(const i of a){const a=i.attributes.get("group-id"),s=i.attributes.get("type");if(a!==n||"video"!==s.toLowerCase())continue;const o=i.attributes.get("resolution")??e.attributes.get("resolution");let c=null,l=null;if(o){const e=o.match(/^(\d+)x(\d+)$/);e&&(c=Number(e[1]),l=Number(e[2]))}r.push({id:-1,demuxer:this,backingTrack:null,default:xs(i.attributes),autoselect:xs(i.attributes)||Cs(i.attributes),languageCode:Bs(i.attributes.get("language")),lineNumber:i.lineNumber,fullPath:i.fullPath??e.fullPath,fullCodecString:m,pairingMask:1n<<BigInt(t),peakBitrate:null,averageBitrate:null,name:i.attributes.get("name"),hasOnlyKeyPackets:e.hasOnlyKeyPackets,info:{type:"video",width:c,height:l}})}}}else if(Qt.includes(o)){if(null!==p)throw new Error("Unsupported M3U8 file; multiple audio codecs found in the CODECS attribute of a variant stream.");p=i;const s=e.attributes.get("audio");if(null===s){const i=e.attributes.get("channels"),a=null!==i?Number(i.split("/")[0]):null;r.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:V,lineNumber:e.lineNumber,fullPath:e.fullPath,fullCodecString:p,pairingMask:1n<<BigInt(t),peakBitrate:g,averageBitrate:k,name:y,hasOnlyKeyPackets:e.hasOnlyKeyPackets,info:{type:"audio",numberOfChannels:null!==a&&Number.isInteger(a)&&a>0?a:null}})}else{if(!n.includes(s))throw new Error(`Invalid M3U8 file; variant stream references audio group "${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<<BigInt(t),peakBitrate:null,averageBitrate:null,name:i.attributes.get("name"),hasOnlyKeyPackets:e.hasOnlyKeyPackets,info:{type:"audio",numberOfChannels:null!==c&&Number.isInteger(c)&&c>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(r<a)return!1;const s=Oo(t,4);if("moof"===s||"sidx"===s)return!0;if("emsg"!==s&&"prft"!==s&&"free"!==s)return!1;i+=r}return!1}get name(){return"MP4"}get mimeType(){return"video/mp4"}}class Fs extends _s{async _canReadInput(e){return"qt  "===await this._getMajorBrand(e)}get name(){return"QuickTime File Format"}get mimeType(){return"video/quicktime"}}class As extends Es{async isSupportedEBMLOfDocType(e,t){let i=e._reader.requestSlice(0,ur);if(de(i)&&(i=await i),!i)return!1;const r=dr(i);if(null===r)return!1;if(r<1||r>8)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<i.allocationSize)throw new TypeError(`Destination buffer too small. Required: ${i.allocationSize}, Available: ${r.byteLength}`);const a=wn(this.format);let s;if(this._data instanceof nn){let e=this._data.getDataPlanes();if(de(e)&&(e=await e),!Array.isArray(e)||e.some(e=>!(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;l<o;l++){const e=i.computedLayouts[l],t=s[l].stride,a=s[l].data;let o=e.sourceTop*t;o+=e.sourceLeftBytes;let c=e.destinationOffset;const u=e.sourceWidthBytes,d={offset:c,stride:e.destinationStride};for(let i=0;i<e.sourceHeight;i++){if(o+u>a.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;t<i.allocationSize;t+=4){if(e){const e=r[t],i=r[t+2];r[t]=i,r[t+2]=e}a&&(r[t+3]=255)}}return n}toVideoFrame(){if(this._closed)throw new Error("VideoSample is closed.");if(l(null!==this._data),this._data instanceof nn){if(null===this.format)throw new Error("Cannot convert a VideoSampleResource-backed VideoSample to VideoFrame if format is null.");const e=this._data.getDataPlanes();if(de(e))throw new Error("Cannot convert a VideoSampleResource-backed VideoSample to VideoFrame if getDataPlanes() returns a promise.");const t=e.reduce((e,t)=>e+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*r<o&&2*a<c&&(l=Math.floor(Math.log2(Math.min(o/r,c/a))));const u=r*2**l,d=a*2**l,{canvas:h,context:f,isNew:m}=l>0?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<i.length;r++){const e=i[r],a=e.widthDivisor,s=e.heightDivisor;if((t.x||0)%a!==0)return!1;if((t.y||0)%s!==0)return!1}return!0},Pn=(e,t,i)=>{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;c<a;c++){const t=r[c],a=t.sampleBytes,l=t.widthDivisor,u=t.heightDivisor,d={destinationOffset:0,destinationStride:0,sourceTop:0,sourceHeight:0,sourceLeftBytes:0,sourceWidthBytes:0};if(d.sourceTop=Math.ceil(Math.trunc(e.y||0)/u),d.sourceHeight=Math.ceil(Math.trunc(e.height||0)/u),d.sourceLeftBytes=Math.floor(Math.trunc(e.x||0)/l)*a,d.sourceWidthBytes=Math.floor(Math.trunc(e.width||0)/l)*a,void 0!==i){const e=i[c];if(e.stride<d.sourceWidthBytes)throw new TypeError(`Stride for plane ${c} is too small.`);d.destinationOffset=e.offset,d.destinationStride=e.stride}else d.destinationOffset=s,d.destinationStride=d.sourceWidthBytes;const h=d.destinationStride*d.sourceHeight+d.destinationOffset;if(h>4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(h),s=Math.max(s,h);for(let e=0;e<c;e++){const t=n[e];if(!(o[c]<=t.destinationOffset||o[e]<=d.destinationOffset))throw new TypeError("Planes overlap.")}n.push(d)}return{allocationSize:s,computedLayouts:n}},In=new Set(["f32","f32-planar","s16","s16-planar","s32","s32-planar","u8","u8-planar"]);class xn{constructor(){this._referenceCount=0}}class Cn{get microsecondTimestamp(){return Math.trunc(J*this.timestamp)}get microsecondDuration(){return Math.trunc(J*this.duration)}constructor(e){if(this._closed=!1,Fn(e)){if(null===e.format)throw new TypeError("AudioData with null format is not supported.");this._data=e,this.format=e.format,this.sampleRate=e.sampleRate,this.numberOfFrames=e.numberOfFrames,this.numberOfChannels=e.numberOfChannels,this.timestamp=e.timestamp/1e6,this.duration=e.numberOfFrames/e.sampleRate}else if(e instanceof xn){if(this._data=e,e._referenceCount++,this.format=e.getFormat(),!In.has(this.format))throw new TypeError("getFormat() must return an AudioSampleFormat.");if(this.sampleRate=e.getSampleRate(),!Number.isInteger(this.sampleRate)||this.sampleRate<=0)throw new TypeError("getSampleRate() must return a positive integer.");if(this.numberOfFrames=e.getNumberOfFrames(),!Number.isInteger(this.numberOfFrames)||this.numberOfFrames<0)throw new TypeError("getNumberOfFrames() must return a non-negative integer.");if(this.numberOfChannels=e.getNumberOfChannels(),!Number.isInteger(this.numberOfChannels)||this.numberOfChannels<=0)throw new TypeError("getNumberOfChannels() must return a positive integer.");if(this.timestamp=e.getTimestamp(),!Number.isFinite(this.timestamp))throw new TypeError("getTimestamp() must return a finite number.");this.duration=this.numberOfFrames/this.sampleRate}else{if(!e||"object"!==typeof e)throw new TypeError("Invalid AudioDataInit: must be an object.");if(!In.has(e.format))throw new TypeError("Invalid AudioDataInit: invalid format.");if(!Number.isFinite(e.sampleRate)||e.sampleRate<=0)throw new TypeError("Invalid AudioDataInit: sampleRate must be > 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<r)throw new TypeError("Invalid AudioDataInit: insufficient data size.");this._data=i}sn?.register(this,{type:"audio",data:this._data},this)}allocationSize(e){if(!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(!Number.isInteger(e.planeIndex)||e.planeIndex<0)throw new TypeError("planeIndex must be a non-negative integer.");if(void 0!==e.format&&!In.has(e.format))throw new TypeError("Invalid format.");if(void 0!==e.frameOffset&&(!Number.isInteger(e.frameOffset)||e.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(void 0!==e.frameCount&&(!Number.isInteger(e.frameCount)||e.frameCount<0))throw new TypeError("frameCount must be a non-negative integer.");if(this._closed)throw new Error("AudioSample is closed.");const t=e.format??this.format,i=e.frameOffset??0;if(i>=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.byteLength<p)throw new RangeError("Destination buffer is too small");const k=g(e),y=Rn(o);if(Fn(this._data)){if(ae()&&u>2&&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;t<u;t++){const i=e(t);S.set(i,t*c*w)}}else S=e(0)}else if(this._data instanceof Uint8Array)S=this._data;else if(l("f32-planar"===n),m)S=new Uint8Array(this._data.allocationSize({format:"f32-planar",planeIndex:s})),this._data.copyTo(S,{format:"f32-planar",planeIndex:s}),s=0;else{S=new Uint8Array(this._data.allocationSize({format:"f32-planar",planeIndex:0})*u);for(let e=0;e<u;e++)this._data.copyTo(S.subarray(e*c*w,(e+1)*c*w),{format:"f32-planar",planeIndex:e})}const v=g(S);for(let l=0;l<h;l++)if(m){let e;e=T?(s*c+(l+d))*w:((l+d)*u+s)*w;y(k,l*f,b(v,e))}else for(let e=0;e<u;e++){let t;t=T?(e*c+(l+d))*w:((l+d)*u+e)*w;y(k,(l*u+e)*f,b(v,t))}}clone(){if(this._closed)throw new Error("AudioSample is closed.");if(this._data instanceof xn){const e=new Cn(this._data);return e.setTimestamp(this.timestamp),e}if(Fn(this._data)){const e=new Cn(this._data.clone());return e.setTimestamp(this.timestamp),e}return new Cn({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp,data:this._data})}trim(e,t=this.numberOfFrames){if(!Number.isInteger(e)||e<0)throw new TypeError("startFrame must be a non-negative integer.");if(!Number.isInteger(t)||t<0)throw new TypeError("endFrame must be a non-negative integer.");if(e>this.numberOfFrames)throw new RangeError("startFrame out of range.");if(t>this.numberOfFrames)throw new RangeError("endFrame out of range.");if(t<e)throw new RangeError("endFrame must not be less than startFrame.");if(this._closed)throw new Error("AudioSample is closed.");const i=t-e,r=Bn(this.format);let a;if(En(this.format)){const t=i*r;if(a=new Uint8Array(t*this.numberOfChannels),i>0)for(let r=0;r<this.numberOfChannels;r++)this.copyTo(a.subarray(r*t,(r+1)*t),{planeIndex:r,format:this.format,frameOffset:e,frameCount:i})}else a=new Uint8Array(i*this.numberOfChannels*r),i>0&&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;i<this.numberOfChannels;i++)this.copyTo(new Uint8Array(t,i*e,e),{planeIndex:i,format:this.format});return new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:t})}{const e=new ArrayBuffer(this.allocationSize({planeIndex:0,format:this.format}));return this.copyTo(e,{planeIndex:0,format:this.format}),new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:e})}}toAudioBuffer(){if(this._closed)throw new Error("AudioSample is closed.");const e=new AudioBuffer({numberOfChannels:this.numberOfChannels,length:this.numberOfFrames,sampleRate:this.sampleRate}),t=new Float32Array(this.allocationSize({planeIndex:0,format:"f32-planar"})/4);for(let i=0;i<this.numberOfChannels;i++)this.copyTo(t,{planeIndex:i,format:"f32-planar"}),e.copyToChannel(t,i);return e}setTimestamp(e){if(!Number.isFinite(e))throw new TypeError("newTimestamp must be a number.");this.timestamp=e}[Symbol.dispose](){this.close()}static*_fromAudioBuffer(e,t){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");const i=e.numberOfChannels,r=e.sampleRate,a=e.length,s=Math.floor(24e4/i);let n=0,o=a;for(;o>0;){const a=Math.min(s,o),c=new Float32Array(i*a);for(let t=0;t<i;t++)e.copyFromChannel(c.subarray(t*a,(t+1)*a),t,n);yield new Cn({format:"f32-planar",sampleRate:r,numberOfFrames:a,numberOfChannels:i,timestamp:t+n/r,data:c}),n+=a,o-=a}}static fromAudioBuffer(e,t){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");const i=e.numberOfChannels,r=e.sampleRate,a=e.length,s=Math.floor(24e4/i);let n=0,o=a;const c=[];for(;o>0;){const a=Math.min(s,o),l=new Float32Array(i*a);for(let t=0;t<i;t++)e.copyFromChannel(l.subarray(t*a,(t+1)*a),t,n);const u=new Cn({format:"f32-planar",sampleRate:r,numberOfFrames:a,numberOfChannels:i,timestamp:t+n/r,data:l});c.push(u),n+=a,o-=a}return c}}const Bn=e=>{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<o;e++){l(t,e*d,c(a,e*u))}}else{const r=new ArrayBuffer(o*a*u),h=g(r);e.copyTo(r,{planeIndex:0,frameOffset:n,frameCount:o,format:i});for(let e=0;e<o;e++){l(t,e*d,c(h,(e*a+s)*u))}}else if(h){const r=new ArrayBuffer(o*u),s=g(r);for(let h=0;h<a;h++){e.copyTo(r,{planeIndex:h,frameOffset:n,frameCount:o,format:i});for(let e=0;e<o;e++){l(t,(e*a+h)*d,c(s,e*u))}}}else{const r=new ArrayBuffer(o*a*u),s=g(r);e.copyTo(r,{planeIndex:0,frameOffset:n,frameCount:o,format:i});for(let e=0;e<o;e++)for(let i=0;i<a;i++){const r=e*a+i;l(t,r*d,c(s,r*u))}}},Dn=[],Mn=[],Nn=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<t;i++)p(i<t-1?e.clone():e);else e.close()},e=>{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.sequenceNumber<k;){const i=Wn(a.length);for(;a.length+h.getDecodeQueueSize()>i&&!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<r.length;e++)p(null);r.length=0};for await(const a of i){if(On(a),d||this._track.input._disposed)break;const i=await e.getPacket(a,g),n=i&&await e.getKeyPacket(a,g);n?(t&&(n.sequenceNumber!==s.sequenceNumber||i.timestamp<t.timestamp)&&(await y(),await b()),r.push(i.timestamp),k=Math.max(i.sequenceNumber,k),t=i,s=n):(-1!==k&&(await y(),await b()),p(null),t=null)}d||this._track.input._disposed||(-1!==k&&await y(),await b()),u=!0,n()})().catch(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<t.length;e++){const i=t[e];if(je(i[0])!==Le.SPS)continue;const r=et(i);r&&0!==r.maxDecFrameBuffering&&1!==r.bitstreamRestrictionFlag&&(t[e]=it(r));break}const r=((e,t)=>{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<e;t++){const e=new Worker(Vn);e.addEventListener("message",e=>{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<s;o++,u+=4)n[u]=c[o];const l={format:"RGBX"===i||"RGBA"===i?"RGBA":"BGRA",codedWidth:r,codedHeight:a,timestamp:e.timestamp,duration:e.duration??void 0,transfer:[n.buffer]};return new VideoFrame(n,l)},s=async(e,t,i)=>{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<n;o++)l[u+o]=t[h+2*o],l[d+o]=t[h+2*o+1];const f=await o(i,r,a,1);l.set(f,s+2*n);const m={format:"I420A",codedWidth:r,codedHeight:a,timestamp:e.timestamp,duration:e.duration??void 0,transfer:[l.buffer]};return new VideoFrame(l,m)},o=async(t,i,r,a)=>{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<a;i++)e[i]=e[4*i+t];return e.subarray(0,a)}return e.subarray(0,i*r*a)}},Xn=e=>{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<<i|(15&r)<<i-4|1<<i-5)-33;return 0===t?a:-a})(e.getUint8(t)):"alaw"===r?this.readInputValue=(e,t)=>(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<<i|(15&r)<<i-4|1<<i-5:r<<1|1,0===t?a:-a})(e.getUint8(t)):l(!1);break;case 2:"unsigned"===r?this.readInputValue=(e,t)=>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<i*this.decoderConfig.numberOfChannels;l++){const e=l*this.inputSampleSize,i=l*this.outputSampleSize,r=this.readInputValue(t,e);this.writeOutputValue(s,i,r)}const n=i/this.decoderConfig.sampleRate;(null===this.currentTimestamp||Math.abs(e.timestamp-this.currentTimestamp)>=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;I<a.length;I++)o[I]=Math.round(a[I]*t);o.sort();let c=1;for(let I=1;I<o.length;I++)o[I]!==o[c-1]&&(o[c++]=o[I]);if(c<2)return{underlyingFrameRate:null,bestGuessFrameRate:t,minFrameRate:t,maxFrameRate:t,averageFrameRate:t,medianFrameRate:t,frameRateIsConstant:!0,probedPacketCount:n};const l=o.subarray(0,c),u=uo(l,t),d=u??t,h=null!==u?t/u:null,f=new Map;let m=1/0,p=-1/0,g=0;for(let I=1;I<c;I++){const e=l[I]-l[I-1],t=null!==h?Math.max(1,Math.round(e/h)):e;f.set(t,(f.get(t)??0)+1),m=Math.min(m,t),p=Math.max(p,t),g+=t}const k=c-1,y=[...f.keys()].sort((e,t)=>e-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;s<a;s++){const e=i[s]??0,t=r[s]??0;if(e!==t)return e-t}return 0}).map(e=>e.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;T<e.length;T++){const t=e[T]-e[T-1];if(!(t>0))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(T<m||T>p)continue;const e=Math.abs(T/g-1);e<y&&(k=T,y=e)}if(null===k){const e=ho(h,f,i),r=ho(m,p,i);if(r&&(!e||r.den<e.den||r.den===e.den&&r.num<=e.num))k=r.num/r.den;else{if(!e)return null;k=t*e.den/e.num}}const b=t/k;let w=0;for(const T of s){const e=Math.max(1,Math.round(T/b));Math.abs(T-e*b)<r&&w++}return w/s.length<.98?null:k},ho=(e,t,i)=>{for(let r=1;r<=i;r++){const i=Math.floor(e*r)+1;if(i/r<t)return we({num:i,den:r})}return null},fo=e=>{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<a&&(r=s,a=t)}return r};pe();const mo=2;class po extends ve{get disposed(){return this._disposed}constructor(e){if(super(),this._demuxerPromise=null,this._format=null,this._trackBackingsCache=null,this._backingToTrack=new Map,this._disposed=!1,this._nextSourceCacheAge=0,this._sourceRefs=[],this._sourceCache=[],this._sourceCachePromises=[],this._onFormatDetermined=null,!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(!Array.isArray(e.formats)||e.formats.some(e=>!(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(e<this.start||e+t>this.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.filePos<e.start||e.filePos+t>e.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;r<t;r++)i+=String.fromCharCode(e.bytes[e.bufferPos++]);return i},Lo=(e,t,i)=>k.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<jo.length&&(t.genre??(t.genre=jo[d]))},Xo=(e,t)=>{const i=To(e,t),r=he(i.indexOf(0),i.length),a=i.subarray(0,r);let s="";for(let n=0;n<a.length;n++)s+=String.fromCharCode(a[n]);return s.trimEnd()},$o=e=>{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<this.bytes.length;t++){const i=this.bytes[t];if(e.push(i),255===i&&t!==this.bytes.length-1){0===this.bytes[t]&&t++}}this.bytes=new Uint8Array(e),this.view=new DataView(this.bytes.buffer)}ununsynchronizeRegion(e,t){const i=[];for(let s=e;s<t;s++){const e=this.bytes[s];if(i.push(e),255===e&&s!==t-1){0===this.bytes[s+1]&&s++}}const r=this.bytes.subarray(0,e),a=this.bytes.subarray(t);this.bytes=new Uint8Array(r.length+i.length+a.length),this.bytes.set(r,0),this.bytes.set(i,r.length),this.bytes.set(a,r.length+i.length),this.view=new DataView(this.bytes.buffer)}readBytes(e){const t=this.bytes.subarray(this.pos,this.pos+e);return this.pos+=e,t}readU8(){const e=this.view.getUint8(this.pos);return this.pos+=1,e}readU16(){const e=this.view.getUint16(this.pos,!1);return this.pos+=2,e}readU24(){const e=this.view.getUint16(this.pos,!1),t=this.view.getUint8(this.pos+2);return this.pos+=3,256*e+t}readU32(){const e=this.view.getUint32(this.pos,!1);return this.pos+=4,e}readAscii(e){let t="";for(let i=0;i<e;i++)t+=String.fromCharCode(this.view.getUint8(this.pos+i));return this.pos+=e,t}readId3V2Frame(){if(2===this.header.majorVersion){const e=this.readAscii(3);if("\0\0\0"===e)return null;return{id:e,size:this.readU24(),flags:0}}{const e=this.readAscii(4);if("\0\0\0\0"===e)return null;const t=this.readU32();let i=4===this.header.majorVersion?gi(t):t;const r=this.readU16(),a=this.pos,s=e=>{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;t<r.length;t++){const a=r[t];if(0===a){this.pos=i+t+1;break}e+=String.fromCharCode(a)}return e}case qo.UTF_16_WITH_BOM:if(255===r[0]&&254===r[1]){const e=new TextDecoder("utf-16le"),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))}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.timestamp<i-r)){if(!(t.timestamp<=i+r))return void(this.nextFrame=t);if(this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.ctx.drawImage(t.canvas,0,0),!this.dropLateFrames&&t.timestamp>i)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)&&e<this.duration&&!this.stalled&&(this.stalled=!0,this.events.emit("waiting"))),this.rafId=requestAnimationFrame(()=>this.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}: ${i.html}`,await d(),i.html);a.control&&e.controls.update({name:"mediabunny-quality",position:"right",html:h,style:{padding:"0 10px"},selector:f,onSelect:m}),a.setting&&e.setting.update({name:"mediabunny-quality",tooltip:h,html:l,icon:'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" height="18"><path fill="#fff" d="M0 96C0 60.7 28.7 32 64 32l384 0c35.3 0 64 28.7 64 64l0 320c0 35.3-28.7 64-64 64L64 480c-35.3 0-64-28.7-64-64L0 96zM323.8 202.5c-4.5-6.6-11.9-10.5-19.8-10.5s-15.4 3.9-19.8 10.5l-87 127.6L170.7 297c-4.6-5.7-11.5-9-18.7-9s-14.2 3.3-18.7 9l-64 80c-5.8 7.2-6.9 17.1-2.9 25.4s12.4 13.6 21.6 13.6l96 0 32 0 208 0c8.9 0 17.1-4.9 21.2-12.8s3.6-17.4-1.4-24.7l-120-176zM112 192a48 48 0 1 0 0-96 48 48 0 1 0 0 96z"/></svg>',width:200,selector:f,onSelect:m})}async function u(r){const a=i.m3u8?.audio||{};if(!c(a)||!r?.audios.length||r.audios.length<2)return void n();const s=a.auto||"Auto",l=a.title||"Audio",u=a.getName||(e=>e.name||e.lang||e.language),h=r.currentAudio?u(r.currentAudio):s,f=o(r.audios.map(e=>({html:u(e),value:e.id,default:r.currentAudio?.id===e.id})),"html");f.push({html:s,value:"auto",default:!r.currentAudio});const m=async i=>(await t.switchM3u8Audio(i.value),e.notice.show=`${l}: ${i.html}`,await d(),i.html);a.control&&e.controls.update({name:"mediabunny-audio",position:"right",html:h,style:{padding:"0 10px"},selector:f,onSelect:m}),a.setting&&e.setting.update({name:"mediabunny-audio",tooltip:h,html:l,icon:'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" height="18"><path fill="#fff" d="M256 80C149.9 80 62.4 159.4 49.6 262c9.4-3.8 19.6-6 30.4-6c26.5 0 48 21.5 48 48l0 128c0 26.5-21.5 48-48 48c-44.2 0-80-35.8-80-80l0-16 0-48 0-48C0 146.6 114.6 32 256 32s256 114.6 256 256l0 48 0 48 0 16c0 44.2-35.8 80-80 80c-26.5 0-48-21.5-48-48l0-128c0-26.5 21.5-48 48-48c10.8 0 21 2.1 30.4 6C449.6 159.4 362.1 80 256 80z"/></svg>',width:200,selector:f,onSelect:m})}async function d(){const e=await t.getM3u8State();if(!e)return s(),void n();await Promise.all([l(e),u(e)])}}({art:t,shim:n,option:e}),t.on("destroy",()=>{delete t.mediabunny,n.destroy()}),a}}});