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

/*!
 * artplayer-proxy-mediabunny.js v1.0.1
 * Github: https://github.com/zhw2590582/ArtPlayer
 * (c) 2017-2026 Harvey Zhao
 * Released under the MIT License.
 */
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FinalizationRegistry(e=>{const t=Date.now();"video"===e.type?(t-ht>=1e3&&(console.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."),ht=t),"undefined"!==typeof VideoFrame&&e.data instanceof VideoFrame&&e.data.close()):(t-mt>=1e3&&(console.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."),mt=t),"undefined"!==typeof AudioData&&e.data instanceof AudioData&&e.data.close())}));const pt=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],gt=new Set(pt);class kt{get displayWidth(){return this.rotation%180===0?this.codedWidth:this.codedHeight}get displayHeight(){return this.rotation%180===0?this.codedHeight:this.codedWidth}get microsecondTimestamp(){return Math.trunc(Y*this.timestamp)}get microsecondDuration(){return Math.trunc(Y*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}constructor(e,t){var r,i,n,s,a,o,l,c,u,d;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||!gt.has(t.format))throw new TypeError("init.format must be one of: "+pt.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.");this._data=S(e).slice(),this._layout=null!=(r=t.layout)?r:wt(t.format,t.codedWidth,t.codedHeight),this.format=t.format,this.codedWidth=t.codedWidth,this.codedHeight=t.codedHeight,this.rotation=null!=(i=t.rotation)?i:0,this.timestamp=t.timestamp,this.duration=null!=(n=t.duration)?n:0,this.colorSpace=new bt(t.colorSpace)}else if("undefined"!==typeof VideoFrame&&e instanceof VideoFrame){if(void 0!==(null==t?void 0:t.rotation)&&![0,90,180,270].includes(t.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(void 0!==(null==t?void 0:t.timestamp)&&!Number.isFinite(null==t?void 0:t.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(void 0!==(null==t?void 0:t.duration)&&(!Number.isFinite(t.duration)||t.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");this._data=e,this._layout=null,this.format=e.format,this.codedWidth=e.displayWidth,this.codedHeight=e.displayHeight,this.rotation=null!=(s=null==t?void 0:t.rotation)?s:0,this.timestamp=null!=(a=null==t?void 0:t.timestamp)?a:e.timestamp/1e6,this.duration=null!=(l=null==t?void 0:t.duration)?l:(null!=(o=e.duration)?o:0)/1e6,this.colorSpace=new bt(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))throw new TypeError("Invalid data type: Must be a BufferSource or CanvasImageSource.");{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("undefined"!==typeof VideoFrame)return new kt(new VideoFrame(e,{timestamp:Math.trunc(t.timestamp*Y),duration:Math.trunc((null!=(c=t.duration)?c:0)*Y)||void 0}),t);let r=0,i=0;if("naturalWidth"in e?(r=e.naturalWidth,i=e.naturalHeight):"videoWidth"in e?(r=e.videoWidth,i=e.videoHeight):"width"in e&&(r=Number(e.width),i=Number(e.height)),!r||!i)throw new TypeError("Could not determine dimensions.");const n=new OffscreenCanvas(r,i),s=n.getContext("2d",{alpha:se(),willReadFrequently:!0});p(s),s.drawImage(e,0,0),this._data=n,this._layout=null,this.format="RGBX",this.codedWidth=r,this.codedHeight=i,this.rotation=null!=(u=t.rotation)?u:0,this.timestamp=t.timestamp,this.duration=null!=(d=t.duration)?d:0,this.colorSpace=new bt({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}}null==ft||ft.register(this,{type:"video",data:this._data},this)}clone(){if(this._closed)throw new Error("VideoSample is closed.");return p(null!==this._data),yt(this._data)?new kt(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation}):this._data instanceof Uint8Array?(p(this._layout),new kt(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})):new kt(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation})}close(){this._closed||(null==ft||ft.unregister(this),yt(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(e={}){if(vt(e),this._closed)throw new Error("VideoSample is closed.");if(null===this.format)throw new Error("Cannot get allocation size when format is null. Sorry!");if(p(null!==this._data),!yt(this._data)&&(e.colorSpace||e.format&&e.format!==this.format||e.layout||e.rect)){const t=this.toVideoFrame(),r=t.allocationSize(e);return t.close(),r}return yt(this._data)?this._data.allocationSize(e):this._data instanceof Uint8Array?this._data.byteLength:this.codedWidth*this.codedHeight*4}copyTo(e){return u(this,arguments,function*(e,t={}){if(!F(e))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(vt(t),this._closed)throw new Error("VideoSample is closed.");if(null===this.format)throw new Error("Cannot copy video sample data when format is null. Sorry!");if(p(null!==this._data),!yt(this._data)&&(t.colorSpace||t.format&&t.format!==this.format||t.layout||t.rect)){const r=this.toVideoFrame(),i=yield r.copyTo(e,t);return r.close(),i}if(yt(this._data))return this._data.copyTo(e,t);if(this._data instanceof Uint8Array){p(this._layout);return S(e).set(this._data),this._layout}{const t=this._data.getContext("2d");p(t);const r=t.getImageData(0,0,this.codedWidth,this.codedHeight);return S(e).set(r.data),[{offset:0,stride:4*this.codedWidth}]}})}toVideoFrame(){if(this._closed)throw new Error("VideoSample is closed.");return p(null!==this._data),yt(this._data)?new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0}):this._data instanceof Uint8Array?new VideoFrame(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0,colorSpace:this.colorSpace}):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(e,t,r,i,n,s,a,o,l){let c=0,u=0,d=this.displayWidth,h=this.displayHeight,m=0,f=0,p=this.displayWidth,g=this.displayHeight;if(void 0!==s?(c=t,u=r,d=i,h=n,m=s,f=a,void 0!==o?(p=o,g=l):(p=d,g=h)):(m=t,f=r,void 0!==i&&(p=i,g=n)),!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(c))throw new TypeError("sx must be a number.");if(!Number.isFinite(u))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(h)||h<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(m))throw new TypeError("dx must be a number.");if(!Number.isFinite(f))throw new TypeError("dy must be a number.");if(!Number.isFinite(p)||p<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(g)||g<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:c,sy:u,sWidth:d,sHeight:h}=this._rotateSourceRegion(c,u,d,h,this.rotation));const k=this.toCanvasImageSource();e.save();const b=m+p/2,y=f+g/2;e.translate(b,y),e.rotate(this.rotation*Math.PI/180);const T=this.rotation%180===0?1:p/g;e.scale(1/T,T),e.drawImage(k,c,u,d,h,-p/2,-g/2,p,g),e.restore()}drawWithFit(e,t){var r,i,n,s,a,o,l,c,u;if(!("undefined"!==typeof CanvasRenderingContext2D&&e instanceof CanvasRenderingContext2D||"undefined"!==typeof OffscreenCanvasRenderingContext2D&&e instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!t||"object"!==typeof t)throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(t.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(void 0!==t.rotation&&![0,90,180,270].includes(t.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");void 0!==t.crop&&St(t.crop,"options.");const d=e.canvas.width,h=e.canvas.height,m=null!=(r=t.rotation)?r:this.rotation,[f,p]=m%180===0?[this.codedWidth,this.codedHeight]:[this.codedHeight,this.codedWidth];let g,k,b,y;t.crop&&Tt(t.crop,f,p);const{sx:T,sy:S,sWidth:v,sHeight:w}=this._rotateSourceRegion(null!=(n=null==(i=t.crop)?void 0:i.left)?n:0,null!=(a=null==(s=t.crop)?void 0:s.top)?a:0,null!=(l=null==(o=t.crop)?void 0:o.width)?l:f,null!=(u=null==(c=t.crop)?void 0:c.height)?u:p,m);if("fill"===t.fit)g=0,k=0,b=d,y=h;else{const[e,r]=t.crop?[t.crop.width,t.crop.height]:[f,p],i="contain"===t.fit?Math.min(d/e,h/r):Math.max(d/e,h/r);b=e*i,y=r*i,g=(d-b)/2,k=(h-y)/2}e.save();const I=m%180===0?1:b/y;e.translate(d/2,h/2),e.rotate(m*Math.PI/180),e.scale(1/I,I),e.translate(-d/2,-h/2),e.drawImage(this.toCanvasImageSource(),T,S,v,w,g,k,b,y),e.restore()}_rotateSourceRegion(e,t,r,i,n){return 90===n?[e,t,r,i]=[t,this.codedHeight-e-r,i,r]:180===n?[e,t]=[this.codedWidth-e-r,this.codedHeight-t-i]:270===n&&([e,t,r,i]=[this.codedWidth-t-i,e,i,r]),{sx:e,sy:t,sWidth:r,sHeight:i}}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(p(null!==this._data),this._data instanceof Uint8Array){const e=this.toVideoFrame();return queueMicrotask(()=>e.close()),e}return this._data}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}[Symbol.dispose](){this.close()}}class bt{constructor(e){var t,r,i,n;this.primaries=null!=(t=null==e?void 0:e.primaries)?t:null,this.transfer=null!=(r=null==e?void 0:e.transfer)?r:null,this.matrix=null!=(i=null==e?void 0:e.matrix)?i:null,this.fullRange=null!=(n=null==e?void 0:e.fullRange)?n:null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}}const yt=e=>"undefined"!==typeof VideoFrame&&e instanceof VideoFrame,Tt=(e,t,r)=>{e.left=Math.min(e.left,t),e.top=Math.min(e.top,r),e.width=Math.min(e.width,t-e.left),e.height=Math.min(e.height,r-e.top),p(e.width>=0),p(e.height>=0)},St=(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.")},vt=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.")}},wt=(e,t,r)=>{const i=It(e),n=[];let s=0;for(const a of i){const e=Math.ceil(t/a.widthDivisor),i=Math.ceil(r/a.heightDivisor),o=e*a.sampleBytes,l=o*i;n.push({offset:s,stride:o}),s+=l}return n},It=e=>{const t=(e,t,r,i,n)=>{const s=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:t,widthDivisor:r,heightDivisor:i},{sampleBytes:t,widthDivisor:r,heightDivisor:i}];return n&&s.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),s};switch(e){case"I420":return t(1,1,2,2,!1);case"I420P10":case"I420P12":return t(2,2,2,2,!1);case"I420A":return t(1,1,2,2,!0);case"I420AP10":case"I420AP12":return t(2,2,2,2,!0);case"I422":return t(1,1,2,1,!1);case"I422P10":case"I422P12":return t(2,2,2,1,!1);case"I422A":return t(1,1,2,1,!0);case"I422AP10":case"I422AP12":return t(2,2,2,1,!0);case"I444":return t(1,1,1,1,!1);case"I444P10":case"I444P12":return t(2,2,1,1,!1);case"I444A":return t(1,1,1,1,!0);case"I444AP10":case"I444AP12":return t(2,2,1,1,!0);case"NV12":return[{sampleBytes:1,widthDivisor:1,heightDivisor:1},{sampleBytes:2,widthDivisor:2,heightDivisor:2}];case"RGBA":case"RGBX":case"BGRA":case"BGRX":return[{sampleBytes:4,widthDivisor:1,heightDivisor:1}];default:q(e),p(!1)}},Pt=new Set(["f32","f32-planar","s16","s16-planar","s32","s32-planar","u8","u8-planar"]);class xt{get microsecondTimestamp(){return Math.trunc(Y*this.timestamp)}get microsecondDuration(){return Math.trunc(Y*this.duration)}constructor(e){if(this._closed=!1,Ft(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||"object"!==typeof e)throw new TypeError("Invalid AudioDataInit: must be an object.");if(!Pt.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(null==e?void 0:e.timestamp))throw new TypeError("init.timestamp must be a number.");const t=e.data.byteLength/(Ct(e.format)*e.numberOfChannels);if(!Number.isInteger(t))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");let r;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)r=new Uint8Array(e.data);else{if(!ArrayBuffer.isView(e.data))throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");r=new Uint8Array(e.data.buffer,e.data.byteOffset,e.data.byteLength)}const i=this.numberOfFrames*this.numberOfChannels*Ct(this.format);if(r.byteLength<i)throw new TypeError("Invalid AudioDataInit: insufficient data size.");this._data=r}null==ft||ft.register(this,{type:"audio",data:this._data},this)}allocationSize(e){var t,r;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&&!Pt.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 i=null!=(t=e.format)?t:this.format,n=null!=(r=e.frameOffset)?r:0;if(n>=this.numberOfFrames)throw new RangeError("frameOffset out of range");const s=void 0!==e.frameCount?e.frameCount:this.numberOfFrames-n;if(s>this.numberOfFrames-n)throw new RangeError("frameCount out of range");const a=Ct(i),o=_t(i);if(o&&e.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!o&&0!==e.planeIndex)throw new RangeError("planeIndex out of range");return(o?s:s*this.numberOfChannels)*a}copyTo(e,t){if(!F(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&&!Pt.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{planeIndex:r,format:i,frameCount:n,frameOffset:s}=t,a=this.format,o=null!=i?i:this.format;if(!o)throw new Error("Destination format not determined");const l=this.numberOfFrames,c=this.numberOfChannels,u=null!=s?s:0;if(u>=l)throw new RangeError("frameOffset out of range");const d=void 0!==n?n:l-u;if(d>l-u)throw new RangeError("frameCount out of range");const h=Ct(o),m=_t(o);if(m&&r>=c)throw new RangeError("planeIndex out of range");if(!m&&0!==r)throw new RangeError("planeIndex out of range");const f=(m?d:d*c)*h;if(e.byteLength<f)throw new RangeError("Destination buffer is too small");const p=v(e),g=Et(o);if(Ft(this._data))ie()&&c>2&&o!==a?Dt(this._data,p,a,o,c,r,u,d):this._data.copyTo(e,{planeIndex:r,frameOffset:u,frameCount:d,format:o});else{const e=this._data,t=v(e),i=Bt(a),n=Ct(a),s=_t(a);for(let a=0;a<d;a++)if(m){let e;e=s?(r*l+(a+u))*n:((a+u)*c+r)*n;g(p,a*h,i(t,e))}else for(let e=0;e<c;e++){let r;r=s?(e*l+(a+u))*n:((a+u)*c+e)*n;g(p,(a*c+e)*h,i(t,r))}}}clone(){if(this._closed)throw new Error("AudioSample is closed.");if(Ft(this._data)){const e=new xt(this._data.clone());return e.setTimestamp(this.timestamp),e}return new xt({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp,data:this._data})}close(){this._closed||(null==ft||ft.unregister(this),Ft(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");if(Ft(this._data)){if(this._data.timestamp===this.microsecondTimestamp)return this._data.clone();if(_t(this.format)){const e=this.allocationSize({planeIndex:0,format:this.format}),t=new ArrayBuffer(e*this.numberOfChannels);for(let r=0;r<this.numberOfChannels;r++)this.copyTo(new Uint8Array(t,r*e,e),{planeIndex:r,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})}}return 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()})}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 r=0;r<this.numberOfChannels;r++)this.copyTo(t,{planeIndex:r,format:"f32-planar"}),e.copyToChannel(t,r);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 r=e.numberOfChannels,i=e.sampleRate,n=e.length,s=Math.floor(24e4/r);let a=0,o=n;for(;o>0;){const n=Math.min(s,o),l=new Float32Array(r*n);for(let t=0;t<r;t++)e.copyFromChannel(l.subarray(t*n,(t+1)*n),t,a);yield new xt({format:"f32-planar",sampleRate:i,numberOfFrames:n,numberOfChannels:r,timestamp:t+a/i,data:l}),a+=n,o-=n}}static fromAudioBuffer(e,t){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");const r=e.numberOfChannels,i=e.sampleRate,n=e.length,s=Math.floor(24e4/r);let a=0,o=n;const l=[];for(;o>0;){const n=Math.min(s,o),c=new Float32Array(r*n);for(let t=0;t<r;t++)e.copyFromChannel(c.subarray(t*n,(t+1)*n),t,a);const u=new xt({format:"f32-planar",sampleRate:i,numberOfFrames:n,numberOfChannels:r,timestamp:t+a/i,data:c});l.push(u),a+=n,o-=n}return l}}const Ct=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")}},_t=e=>{switch(e){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},Bt=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)}},Et=e=>{switch(e){case"u8":case"u8-planar":return(e,t,r)=>e.setUint8(t,K(127.5*(r+1),0,255));case"s16":case"s16-planar":return(e,t,r)=>e.setInt16(t,K(Math.round(32767*r),-32768,32767),!0);case"s32":case"s32-planar":return(e,t,r)=>e.setInt32(t,K(Math.round(2147483647*r),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(e,t,r)=>e.setFloat32(t,r,!0)}},Ft=e=>"undefined"!==typeof AudioData&&e instanceof AudioData,Dt=(e,t,r,i,n,s,a,o)=>{const l=Bt(r),c=Et(i),u=Ct(r),d=Ct(i),h=_t(r);if(_t(i))if(h){const i=new ArrayBuffer(o*u),n=v(i);e.copyTo(i,{planeIndex:s,frameOffset:a,frameCount:o,format:r});for(let e=0;e<o;e++){c(t,e*d,l(n,e*u))}}else{const i=new ArrayBuffer(o*n*u),h=v(i);e.copyTo(i,{planeIndex:0,frameOffset:a,frameCount:o,format:r});for(let e=0;e<o;e++){c(t,e*d,l(h,(e*n+s)*u))}}else if(h){const i=new ArrayBuffer(o*u),s=v(i);for(let h=0;h<n;h++){e.copyTo(i,{planeIndex:h,frameOffset:a,frameCount:o,format:r});for(let e=0;e<o;e++){c(t,(e*n+h)*d,l(s,e*u))}}}else{const i=new ArrayBuffer(o*n*u),s=v(i);e.copyTo(i,{planeIndex:0,frameOffset:a,frameCount:o,format:r});for(let e=0;e<o;e++)for(let r=0;r<n;r++){const i=e*n+r;c(t,i*d,l(s,i*u))}}},At=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.")},Rt=e=>{if(!me(e))throw new TypeError("timestamp must be a number.")},Mt=(e,t,r)=>r.verifyKeyPackets?t.then(t=>u(null,null,function*(){if(!t||"delta"===t.type)return t;const r=yield e.determinePacketType(t);return r&&(t.type=r),t})):t;class Nt{constructor(e){if(!(e instanceof Qt))throw new TypeError("track must be an InputTrack.");this._track=e}getFirstPacket(e={}){if(At(e),this._track.input._disposed)throw new gn;return Mt(this._track,this._track._backing.getFirstPacket(e),e)}getPacket(e,t={}){if(Rt(e),At(t),this._track.input._disposed)throw new gn;return Mt(this._track,this._track._backing.getPacket(e,t),t)}getNextPacket(e,t={}){if(!(e instanceof dt))throw new TypeError("packet must be an EncodedPacket.");if(At(t),this._track.input._disposed)throw new gn;return Mt(this._track,this._track._backing.getNextPacket(e,t),t)}getKeyPacket(e){return u(this,arguments,function*(e,t={}){if(Rt(e),At(t),this._track.input._disposed)throw new gn;if(!t.verifyKeyPackets)return this._track._backing.getKeyPacket(e,t);const r=yield this._track._backing.getKeyPacket(e,t);if(!r)return r;p("key"===r.type);return"delta"===(yield this._track.determinePacketType(r))?this.getKeyPacket(r.timestamp-1/this._track.timeResolution,t):r})}getNextKeyPacket(e){return u(this,arguments,function*(e,t={}){if(!(e instanceof dt))throw new TypeError("packet must be an EncodedPacket.");if(At(t),this._track.input._disposed)throw new gn;if(!t.verifyKeyPackets)return this._track._backing.getNextKeyPacket(e,t);const r=yield this._track._backing.getNextKeyPacket(e,t);if(!r)return r;p("key"===r.type);return"delta"===(yield this._track.determinePacketType(r))?this.getNextKeyPacket(r,t):r})}packets(e,t,r={}){if(void 0!==e&&!(e instanceof dt))throw new TypeError("startPacket must be an EncodedPacket.");if(void 0!==e&&e.isMetadataOnly&&!(null==r?void 0:r.metadataOnly))throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(void 0!==t&&!(t instanceof dt))throw new TypeError("endPacket must be an EncodedPacket.");if(At(r),this._track.input._disposed)throw new gn;const i=[];let{promise:n,resolve:s}=O(),{promise:a,resolve:o}=O(),l=!1,c=!1,d=null;const h=[],m=()=>Math.max(2,h.length);(()=>u(this,null,function*(){let u=null!=e?e:yield this.getFirstPacket(r);for(;u&&!c&&!this._track.input._disposed&&!(t&&u.sequenceNumber>=(null==t?void 0:t.sequenceNumber));)i.length>m()?(({promise:a,resolve:o}=O()),yield a):(i.push(u),s(),({promise:n,resolve:s}=O()),u=yield this.getNextPacket(u,r));l=!0,s()}))().catch(e=>{d||(d=e,s())});const f=this._track;return{next(){return u(this,null,function*(){for(;;){if(f.input._disposed)throw new gn;if(c)return{value:void 0,done:!0};if(d)throw d;if(i.length>0){const e=i.shift(),t=performance.now();for(h.push(t);h.length>0&&t-h[0]>=1e3;)h.shift();return o(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};yield n}})},return(){return u(this,null,function*(){return c=!0,o(),s(),{value:void 0,done:!0}})},throw(e){return u(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}class zt{constructor(e,t){this.onSample=e,this.onError=t}}class Ot{mediaSamplesInRange(e=0,t=1/0){Rt(e),Rt(t);const r=[];let i=!1,n=null,{promise:s,resolve:a}=O(),{promise:o,resolve:l}=O(),c=!1,d=!1,h=!1,m=null;(()=>u(this,null,function*(){var u;const f=yield this._createDecoder(o=>{l(),o.timestamp>=t&&(d=!0),d?o.close():(n&&(o.timestamp>e?(r.push(n),i=!0):n.close()),o.timestamp>=e&&(r.push(o),i=!0),n=i?null:o,r.length>0&&(a(),({promise:s,resolve:a}=O())))},e=>{m||(m=e,a())}),p=this._createPacketSink(),g=null!=(u=yield p.getKeyPacket(e,{verifyKeyPackets:!0}))?u:yield p.getFirstPacket();let k=g;const b=p.packets(null!=g?g:void 0,void 0);for(yield b.next();k&&!d&&!this._track.input._disposed;){const e=Lt(r.length);if(r.length+f.getDecodeQueueSize()>e){({promise:o,resolve:l}=O()),yield o;continue}f.decode(k);const t=yield b.next();if(t.done)break;k=t.value}yield b.return(),h||this._track.input._disposed||(yield f.flush()),f.close(),!i&&n&&r.push(n),c=!0,a()}))().catch(e=>{m||(m=e,a())});const f=this._track,p=()=>{null==n||n.close();for(const e of r)e.close()};return{next(){return u(this,null,function*(){for(;;){if(f.input._disposed)throw p(),new gn;if(h)return{value:void 0,done:!0};if(m)throw p(),m;if(r.length>0){const e=r.shift();return l(),{value:e,done:!1}}if(c)return{value:void 0,done:!0};yield s}})},return(){return u(this,null,function*(){return h=!0,d=!0,l(),a(),p(),{value:void 0,done:!0}})},throw(e){return u(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(e){(e=>{if(!(Symbol.iterator in e)&&!(Symbol.asyncIterator in e))throw new TypeError("Argument must be an iterable or async iterable.")})(e);const t=V(e),r=[],i=[];let{promise:n,resolve:s}=O(),{promise:a,resolve:o}=O(),l=!1,c=!1,d=null;const h=e=>{i.push(e),s(),({promise:n,resolve:s}=O())};(()=>u(this,null,function*(){const e=yield this._createDecoder(e=>{if(o(),c)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 r=0;r<t;r++)h(r<t-1?e.clone():e);else e.close()},e=>{d||(d=e,s())}),n=this._createPacketSink();let f=null,g=null,k=-1;const b=()=>u(this,null,function*(){p(g);let t=g;for(e.decode(t);t.sequenceNumber<k;){const r=Lt(i.length);for(;i.length+e.getDecodeQueueSize()>r&&!c;)({promise:a,resolve:o}=O()),yield a;if(c)break;const s=yield n.getNextPacket(t);p(s),e.decode(s),t=s}k=-1}),y=()=>u(this,null,function*(){yield e.flush();for(let e=0;e<r.length;e++)h(null);r.length=0});try{for(var T,S,v,w=m(t);T=!(S=yield w.next()).done;T=!1){const e=S.value;if(Rt(e),c||this._track.input._disposed)break;const t=yield n.getPacket(e),i=t&&(yield n.getKeyPacket(e,{verifyKeyPackets:!0}));i?(f&&(i.sequenceNumber!==g.sequenceNumber||t.timestamp<f.timestamp)&&(yield b(),yield y()),r.push(t.timestamp),k=Math.max(t.sequenceNumber,k),f=t,g=i):(-1!==k&&(yield b(),yield y()),h(null),f=null)}}catch(S){v=[S]}finally{try{T&&(S=w.return)&&(yield S.call(w))}finally{if(v)throw v[0]}}c||this._track.input._disposed||(-1!==k&&(yield b()),yield y()),e.close(),l=!0,s()}))().catch(e=>{d||(d=e,s())});const f=this._track,g=()=>{for(const e of i)null==e||e.close()};return{next(){return u(this,null,function*(){for(;;){if(f.input._disposed)throw g(),new gn;if(c)return{value:void 0,done:!0};if(d)throw g(),d;if(i.length>0){const e=i.shift();return p(void 0!==e),o(),{value:e,done:!1}}if(l)return{value:void 0,done:!0};yield n}})},return(){return u(this,null,function*(){return c=!0,o(),s(),g(),{value:void 0,done:!0}})},throw(e){return u(this,null,function*(){throw e})},[Symbol.asyncIterator](){return this}}}}const Lt=e=>0===e?40:8;class Ut extends zt{constructor(e,i,n,s,a,o){super(e,i),this.codec=n,this.decoderConfig=s,this.rotation=a,this.timeResolution=o,this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new te,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.mergerCreationFailed=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue=[],this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1;const l=lt.find(e=>e.supports(n,s));if(l)this.customDecoder=new l,this.customDecoder.codec=n,this.customDecoder.config=s,this.customDecoder.onSample=e=>{if(!(e instanceof kt))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init());else{const e=e=>{if(this.alphaQueue.length>0){const t=this.alphaQueue.shift();p(void 0!==t),this.mergeAlpha(e,t)}else this.colorQueue.push(e)};if("avc"===n&&this.decoderConfig.description&&oe()){const e=(e=>{try{const t=v(e);let r=0;const i=t.getUint8(r++),n=t.getUint8(r++),s=t.getUint8(r++),a=t.getUint8(r++),o=3&t.getUint8(r++),l=31&t.getUint8(r++),c=[];for(let m=0;m<l;m++){const i=t.getUint16(r,!1);r+=2,c.push(e.subarray(r,r+i)),r+=i}const u=t.getUint8(r++),d=[];for(let m=0;m<u;m++){const i=t.getUint16(r,!1);r+=2,d.push(e.subarray(r,r+i)),r+=i}const h={configurationVersion:i,avcProfileIndication:n,profileCompatibility:s,avcLevelIndication:a,lengthSizeMinusOne:o,sequenceParameterSets:c,pictureParameterSets:d,chromaFormat:null,bitDepthLumaMinus8:null,bitDepthChromaMinus8:null,sequenceParameterSetExt:null};if((100===n||110===n||122===n||144===n)&&r+4<=e.length){const i=3&t.getUint8(r++),n=7&t.getUint8(r++),s=7&t.getUint8(r++),a=t.getUint8(r++);h.chromaFormat=i,h.bitDepthLumaMinus8=n,h.bitDepthChromaMinus8=s;const o=[];for(let l=0;l<a;l++){const i=t.getUint16(r,!1);r+=2,o.push(e.subarray(r,r+i)),r+=i}h.sequenceParameterSetExt=o}return h}catch(t){return console.error("Error deserializing AVC Decoder Configuration Record:",t),null}})(S(this.decoderConfig.description));if(e&&e.sequenceParameterSets.length>0){const i=Ve(e.sequenceParameterSets[0]);i&&0===i.frameMbsOnlyFlag&&(this.decoderConfig=(u=c({},this.decoderConfig),t(u,r({hardwareAcceleration:"prefer-software"}))))}}const i=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:t=>{try{e(t)}catch(r){this.onError(r)}},error:e=>{e.stack=i,this.onError(e)}}),this.decoder.configure(this.decoderConfig)}var u}getDecodeQueueSize(){var e,t;return this.customDecoder?this.customDecoderQueueSize:(p(this.decoder),Math.max(this.decoder.decodeQueueSize,null!=(t=null==(e=this.alphaDecoder)?void 0:e.decodeQueueSize)?t:0))}decode(e){if("hevc"===this.codec&&this.currentPacketIndex>0&&!this.raslSkipped){if(this.hasHevcRaslPicture(e.data))return;this.raslSkipped=!0}if(this.customDecoder)this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).then(()=>this.customDecoderQueueSize--);else{if(p(this.decoder),ie()||z(this.inputTimestamps,e.timestamp,e=>e),oe()&&0===this.currentPacketIndex&&"avc"===this.codec){const t=ze(e.data,this.decoderConfig).filter(e=>{const t=Le(e);return!(t>=20&&t<=31)}),r=Oe(t,this.decoderConfig);e=new dt(r,e.type,e.timestamp,e.duration)}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha||this.mergerCreationFailed)return void this.pushNullAlphaFrame();if(!this.merger)try{this.merger=new Vt}catch(r){return console.error("Due to an error, only color data will be decoded.",r),this.mergerCreationFailed=!0,void this.decodeAlphaData(e)}if(!this.alphaDecoder){const e=e=>{if(this.alphaDecoderQueueSize--,this.colorQueue.length>0){const t=this.colorQueue.shift();p(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();p(void 0!==e),this.mergeAlpha(e,null)}else this.alphaQueue.push(null)},t=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:t=>{try{e(t)}catch(r){this.onError(r)}},error:e=>{e.stack=t,this.onError(e)}}),this.alphaDecoder.configure(this.decoderConfig)}const t=it(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe="key"===t),this.alphaHadKeyframe){if("hevc"===this.codec&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha))return void this.pushNullAlphaFrame();this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(null!=t?t:e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){0===this.alphaDecoderQueueSize?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){return qe(e,this.decoderConfig).some(e=>{const t=He(e);return t===Fe.RASL_N||t===Fe.RASL_R})}sampleHandler(e){if(ie()){if(this.sampleQueue.length>0&&e.timestamp>=k(this.sampleQueue).timestamp){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}z(this.sampleQueue,e,e=>e.timestamp)}else{const t=this.inputTimestamps.shift();p(void 0!==t),e.setTimestamp(t),this.finalizeAndEmitSample(e)}}finalizeAndEmitSample(e){e.setTimestamp(Math.round(e.timestamp*this.timeResolution)/this.timeResolution),e.setDuration(Math.round(e.duration*this.timeResolution)/this.timeResolution),e.setRotation(this.rotation),this.onSample(e)}mergeAlpha(e,t){var r;if(!t){const t=new kt(e);return void this.sampleHandler(t)}p(this.merger),this.merger.update(e,t),e.close(),t.close();const i=new VideoFrame(this.merger.canvas,{timestamp:e.timestamp,duration:null!=(r=e.duration)?r:void 0}),n=new kt(i);this.sampleHandler(n)}flush(){return u(this,null,function*(){var e;if(this.customDecoder?yield this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(p(this.decoder),yield Promise.all([this.decoder.flush(),null==(e=this.alphaDecoder)?void 0:e.flush()]),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),ie()){for(const e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1})}close(){var e,t;this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(p(this.decoder),this.decoder.close(),null==(e=this.alphaDecoder)||e.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>null==e?void 0:e.close()),this.alphaQueue.length=0,null==(t=this.merger)||t.close());for(const r of this.sampleQueue)r.close();this.sampleQueue.length=0}}class Vt{constructor(){"undefined"!==typeof OffscreenCanvas?this.canvas=new OffscreenCanvas(300,150):this.canvas=document.createElement("canvas");const e=this.canvas.getContext("webgl2",{premultipliedAlpha:!1});if(!e)throw new Error("Couldn't acquire WebGL 2 context.");this.gl=e,this.program=this.createProgram(),this.vao=this.createVAO(),this.colorTexture=this.createTexture(),this.alphaTexture=this.createTexture(),this.gl.useProgram(this.program),this.gl.uniform1i(this.gl.getUniformLocation(this.program,"u_colorTexture"),0),this.gl.uniform1i(this.gl.getUniformLocation(this.program,"u_alphaTexture"),1)}createProgram(){const e=this.createShader(this.gl.VERTEX_SHADER,"#version 300 es\n\t\t\tin vec2 a_position;\n\t\t\tin vec2 a_texCoord;\n\t\t\tout vec2 v_texCoord;\n\t\t\t\n\t\t\tvoid main() {\n\t\t\t\tgl_Position = vec4(a_position, 0.0, 1.0);\n\t\t\t\tv_texCoord = a_texCoord;\n\t\t\t}\n\t\t"),t=this.createShader(this.gl.FRAGMENT_SHADER,"#version 300 es\n\t\t\tprecision highp float;\n\t\t\t\n\t\t\tuniform sampler2D u_colorTexture;\n\t\t\tuniform sampler2D u_alphaTexture;\n\t\t\tin vec2 v_texCoord;\n\t\t\tout vec4 fragColor;\n\t\t\t\n\t\t\tvoid main() {\n\t\t\t\tvec3 color = texture(u_colorTexture, v_texCoord).rgb;\n\t\t\t\tfloat alpha = texture(u_alphaTexture, v_texCoord).r;\n\t\t\t\tfragColor = vec4(color, alpha);\n\t\t\t}\n\t\t"),r=this.gl.createProgram();return this.gl.attachShader(r,e),this.gl.attachShader(r,t),this.gl.linkProgram(r),r}createShader(e,t){const r=this.gl.createShader(e);return this.gl.shaderSource(r,t),this.gl.compileShader(r),r}createVAO(){const e=this.gl.createVertexArray();this.gl.bindVertexArray(e);const t=new Float32Array([-1,-1,0,1,1,-1,1,1,-1,1,0,0,1,1,1,0]),r=this.gl.createBuffer();this.gl.bindBuffer(this.gl.ARRAY_BUFFER,r),this.gl.bufferData(this.gl.ARRAY_BUFFER,t,this.gl.STATIC_DRAW);const i=this.gl.getAttribLocation(this.program,"a_position"),n=this.gl.getAttribLocation(this.program,"a_texCoord");return this.gl.enableVertexAttribArray(i),this.gl.vertexAttribPointer(i,2,this.gl.FLOAT,!1,16,0),this.gl.enableVertexAttribArray(n),this.gl.vertexAttribPointer(n,2,this.gl.FLOAT,!1,16,8),e}createTexture(){const e=this.gl.createTexture();return this.gl.bindTexture(this.gl.TEXTURE_2D,e),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_S,this.gl.CLAMP_TO_EDGE),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_T,this.gl.CLAMP_TO_EDGE),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_MIN_FILTER,this.gl.LINEAR),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_MAG_FILTER,this.gl.LINEAR),e}update(e,t){e.displayWidth===this.canvas.width&&e.displayHeight===this.canvas.height||(this.canvas.width=e.displayWidth,this.canvas.height=e.displayHeight),this.gl.activeTexture(this.gl.TEXTURE0),this.gl.bindTexture(this.gl.TEXTURE_2D,this.colorTexture),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.gl.RGBA,this.gl.UNSIGNED_BYTE,e),this.gl.activeTexture(this.gl.TEXTURE1),this.gl.bindTexture(this.gl.TEXTURE_2D,this.alphaTexture),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.gl.RGBA,this.gl.UNSIGNED_BYTE,t),this.gl.viewport(0,0,this.canvas.width,this.canvas.height),this.gl.clear(this.gl.COLOR_BUFFER_BIT),this.gl.bindVertexArray(this.vao),this.gl.drawArrays(this.gl.TRIANGLE_STRIP,0,4)}close(){var e;null==(e=this.gl.getExtension("WEBGL_lose_context"))||e.loseContext(),this.gl=null}}class qt extends Ot{constructor(e){if(!(e instanceof Gt))throw new TypeError("videoTrack must be an InputVideoTrack.");super(),this._track=e}_createDecoder(e,t){return u(this,null,function*(){if(!(yield this._track.canDecode()))throw new Error("This video track cannot be decoded by this browser. Make sure to check decodability before using a track.");const r=this._track.codec,i=this._track.rotation,n=yield this._track.getDecoderConfig(),s=this._track.timeResolution;return p(r&&n),new Ut(e,t,r,n,i,s)})}_createPacketSink(){return new Nt(this._track)}getSample(e){return u(this,null,function*(){Rt(e);try{for(var t,r,i,n=m(this.mediaSamplesAtTimestamps([e]));t=!(r=yield n.next()).done;t=!1){return r.value}}catch(r){i=[r]}finally{try{t&&(r=n.return)&&(yield r.call(n))}finally{if(i)throw i[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e=0,t=1/0){return this.mediaSamplesInRange(e,t)}samplesAtTimestamps(e){return this.mediaSamplesAtTimestamps(e)}}class Ht{constructor(e,t={}){var r,i,n,s;if(this._nextCanvasIndex=0,!(e instanceof Gt))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&&St(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.");const a=null!=(r=t.rotation)?r:e.rotation,[o,l]=a%180===0?[e.codedWidth,e.codedHeight]:[e.codedHeight,e.codedWidth],c=t.crop;c&&Tt(c,o,l);let[u,d]=c?[c.width,c.height]:[o,l];const h=u/d;void 0!==t.width&&void 0===t.height?(u=t.width,d=Math.round(u/h)):void 0===t.width&&void 0!==t.height?(d=t.height,u=Math.round(d*h)):void 0!==t.width&&void 0!==t.height&&(u=t.width,d=t.height),this._videoTrack=e,this._alpha=null!=(i=t.alpha)&&i,this._width=u,this._height=d,this._rotation=a,this._crop=c,this._fit=null!=(n=t.fit)?n:"fill",this._videoSampleSink=new qt(e),this._canvasPool=Array.from({length:null!=(s=t.poolSize)?s:0},()=>null)}_videoSampleToWrappedCanvas(e){let t=this._canvasPool[this._nextCanvasIndex],r=!1;t||("undefined"!==typeof document?(t=document.createElement("canvas"),t.width=this._width,t.height=this._height):t=new OffscreenCanvas(this._width,this._height),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=t),r=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);const i=t.getContext("2d",{alpha:this._alpha||se()});p(i),i.resetTransform(),r||(!this._alpha&&se()?(i.fillStyle="black",i.fillRect(0,0,this._width,this._height)):i.clearRect(0,0,this._width,this._height)),e.drawWithFit(i,{fit:this._fit,rotation:this._rotation,crop:this._crop});const n={canvas:t,timestamp:e.timestamp,duration:e.duration};return e.close(),n}getCanvas(e){return u(this,null,function*(){Rt(e);const t=yield this._videoSampleSink.getSample(e);return t&&this._videoSampleToWrappedCanvas(t)})}canvases(e=0,t=1/0){return j(this._videoSampleSink.samples(e,t),e=>this._videoSampleToWrappedCanvas(e))}canvasesAtTimestamps(e){return j(this._videoSampleSink.samplesAtTimestamps(e),e=>e&&this._videoSampleToWrappedCanvas(e))}}class Wt extends zt{constructor(e,t,r,i){super(e,t),this.decoder=null,this.customDecoder=null,this.customDecoderCallSerializer=new te,this.customDecoderQueueSize=0,this.currentTimestamp=null;const n=t=>{(null===this.currentTimestamp||Math.abs(t.timestamp-this.currentTimestamp)>=t.duration)&&(this.currentTimestamp=t.timestamp);const r=this.currentTimestamp;if(this.currentTimestamp+=t.duration,0===t.numberOfFrames)return void t.close();const n=i.sampleRate;t.setTimestamp(Math.round(r*n)/n),e(t)},s=ct.find(e=>e.supports(r,i));if(s)this.customDecoder=new s,this.customDecoder.codec=r,this.customDecoder.config=i,this.customDecoder.onSample=e=>{if(!(e instanceof xt))throw new TypeError("The argument passed to onSample must be an AudioSample.");n(e)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init());else{const e=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:e=>{try{n(new xt(e))}catch(t){this.onError(t)}},error:t=>{t.stack=e,this.onError(t)}}),this.decoder.configure(i)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(p(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).then(()=>this.customDecoderQueueSize--)):(p(this.decoder),this.decoder.decode(e.toEncodedAudioChunk()))}flush(){return this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(p(this.decoder),this.decoder.flush())}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(p(this.decoder),this.decoder.close())}}class jt extends zt{constructor(e,t,r){super(e,t),this.decoderConfig=r,this.currentTimestamp=null,p(ke.includes(r.codec)),this.codec=r.codec;const{dataType:i,sampleSize:n,littleEndian:s}=_e(this.codec);switch(this.inputSampleSize=n,n){case 1:"unsigned"===i?this.readInputValue=(e,t)=>e.getUint8(t)-o(2,7):"signed"===i?this.readInputValue=(e,t)=>e.getInt8(t):"ulaw"===i?this.readInputValue=(e,t)=>(e=>{let t=0,r=0,i=~e;128&i&&(i&=-129,t=-1),r=5+((240&i)>>4);const n=(1<<r|(15&i)<<r-4|1<<r-5)-33;return 0===t?n:-n})(e.getUint8(t)):"alaw"===i?this.readInputValue=(e,t)=>(e=>{let t=0,r=0,i=85^e;128&i&&(i&=-129,t=-1),r=4+((240&i)>>4);let n=0;return n=4!==r?1<<r|(15&i)<<r-4|1<<r-5:i<<1|1,0===t?n:-n})(e.getUint8(t)):p(!1);break;case 2:"unsigned"===i?this.readInputValue=(e,t)=>e.getUint16(t,s)-o(2,15):"signed"===i?this.readInputValue=(e,t)=>e.getInt16(t,s):p(!1);break;case 3:"unsigned"===i?this.readInputValue=(e,t)=>H(e,t,s)-o(2,23):"signed"===i?this.readInputValue=(e,t)=>((e,t,r)=>H(e,t,r)<<8>>8)(e,t,s):p(!1);break;case 4:"unsigned"===i?this.readInputValue=(e,t)=>e.getUint32(t,s)-o(2,31):"signed"===i?this.readInputValue=(e,t)=>e.getInt32(t,s):"float"===i?this.readInputValue=(e,t)=>e.getFloat32(t,s):p(!1);break;case 8:"float"===i?this.readInputValue=(e,t)=>e.getFloat64(t,s):p(!1);break;default:q(n),p(!1)}switch(n){case 1:"ulaw"===i||"alaw"===i?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,r)=>e.setInt16(t,r,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(e,t,r)=>e.setUint8(t,r+o(2,7)));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(e,t,r)=>e.setInt16(t,r,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(e,t,r)=>e.setInt32(t,r<<8,!0);break;case 4:this.outputSampleSize=4,"float"===i?(this.outputFormat="f32",this.writeOutputValue=(e,t,r)=>e.setFloat32(t,r,!0)):(this.outputFormat="s32",this.writeOutputValue=(e,t,r)=>e.setInt32(t,r,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(e,t,r)=>e.setFloat32(t,r,!0);break;default:q(n),p(!1)}}getDecodeQueueSize(){return 0}decode(e){const t=v(e.data),r=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,i=r*this.decoderConfig.numberOfChannels*this.outputSampleSize,n=new ArrayBuffer(i),s=new DataView(n);for(let c=0;c<r*this.decoderConfig.numberOfChannels;c++){const e=c*this.inputSampleSize,r=c*this.outputSampleSize,i=this.readInputValue(t,e);this.writeOutputValue(s,r,i)}const a=r/this.decoderConfig.sampleRate;(null===this.currentTimestamp||Math.abs(e.timestamp-this.currentTimestamp)>=a)&&(this.currentTimestamp=e.timestamp);const o=this.currentTimestamp;this.currentTimestamp+=a;const l=new xt({format:this.outputFormat,data:n,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:r,timestamp:o});this.onSample(l)}flush(){return u(this,null,function*(){})}close(){}}class Kt extends Ot{constructor(e){if(!(e instanceof Xt))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=e}_createDecoder(e,t){return u(this,null,function*(){if(!(yield this._track.canDecode()))throw new Error("This audio track cannot be decoded by this browser. Make sure to check decodability before using a track.");const r=this._track.codec,i=yield this._track.getDecoderConfig();return p(r&&i),ke.includes(i.codec)?new jt(e,t,i):new Wt(e,t,r,i)})}_createPacketSink(){return new Nt(this._track)}getSample(e){return u(this,null,function*(){Rt(e);try{for(var t,r,i,n=m(this.mediaSamplesAtTimestamps([e]));t=!(r=yield n.next()).done;t=!1){return r.value}}catch(r){i=[r]}finally{try{t&&(r=n.return)&&(yield r.call(n))}finally{if(i)throw i[0]}}throw new Error("Internal error: Iterator returned nothing.")})}samples(e=0,t=1/0){return this.mediaSamplesInRange(e,t)}samplesAtTimestamps(e){return this.mediaSamplesAtTimestamps(e)}}class $t{constructor(e){if(!(e instanceof Xt))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new Kt(e)}_audioSampleToWrappedArrayBuffer(e){const t={buffer:e.toAudioBuffer(),timestamp:e.timestamp,duration:e.duration};return e.close(),t}getBuffer(e){return u(this,null,function*(){Rt(e);const t=yield this._audioSampleSink.getSample(e);return t&&this._audioSampleToWrappedArrayBuffer(t)})}buffers(e=0,t=1/0){return j(this._audioSampleSink.samples(e,t),e=>this._audioSampleToWrappedArrayBuffer(e))}buffersAtTimestamps(e){return j(this._audioSampleSink.samplesAtTimestamps(e),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}}class Qt{constructor(e,t){this.input=e,this._backing=t}isVideoTrack(){return this instanceof Gt}isAudioTrack(){return this instanceof Xt}get id(){return this._backing.getId()}get internalCodecId(){return this._backing.getInternalCodecId()}get languageCode(){return this._backing.getLanguageCode()}get name(){return this._backing.getName()}get timeResolution(){return this._backing.getTimeResolution()}get disposition(){return this._backing.getDisposition()}getFirstTimestamp(){return this._backing.getFirstTimestamp()}computeDuration(){return this._backing.computeDuration()}computePacketStats(e=1/0){return u(this,null,function*(){const t=new Nt(this);let r=1/0,i=-1/0,n=0,s=0;try{for(var a,o,l,c=m(t.packets(void 0,void 0,{metadataOnly:!0}));a=!(o=yield c.next()).done;a=!1){const t=o.value;if(n>=e&&t.timestamp>=i)break;r=Math.min(r,t.timestamp),i=Math.max(i,t.timestamp+t.duration),n++,s+=t.byteLength}}catch(o){l=[o]}finally{try{a&&(o=c.return)&&(yield o.call(c))}finally{if(l)throw l[0]}}return{packetCount:n,averagePacketRate:n?Number((n/(i-r)).toPrecision(16)):0,averageBitrate:n?Number((8*s/(i-r)).toPrecision(16)):0}})}}class Gt extends Qt{constructor(e,t){super(e,t),this._backing=t}get type(){return"video"}get codec(){return this._backing.getCodec()}get codedWidth(){return this._backing.getCodedWidth()}get codedHeight(){return this._backing.getCodedHeight()}get rotation(){return this._backing.getRotation()}get displayWidth(){return this._backing.getRotation()%180===0?this._backing.getCodedWidth():this._backing.getCodedHeight()}get displayHeight(){return this._backing.getRotation()%180===0?this._backing.getCodedHeight():this._backing.getCodedWidth()}getColorSpace(){return this._backing.getColorSpace()}hasHighDynamicRange(){return u(this,null,function*(){const e=yield this._backing.getColorSpace();return"bt2020"===e.primaries||"smpte432"===e.primaries||"pg"===e.transfer||"hlg"===e.transfer||"bt2020-ncl"===e.matrix})}canBeTransparent(){return this._backing.canBeTransparent()}getDecoderConfig(){return this._backing.getDecoderConfig()}getCodecParameterString(){return u(this,null,function*(){var e;const t=yield this._backing.getDecoderConfig();return null!=(e=null==t?void 0:t.codec)?e:null})}canDecode(){return u(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=this._backing.getCodec();if(p(null!==t),lt.some(r=>r.supports(t,e)))return!0;if("undefined"===typeof VideoDecoder)return!1;return!0===(yield VideoDecoder.isConfigSupported(e)).supported}catch(e){return console.error("Error during decodability check:",e),!1}})}determinePacketType(e){return u(this,null,function*(){if(!(e instanceof dt))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");if(null===this.codec)return null;const t=yield this.getDecoderConfig();return p(t),it(this.codec,t,e.data)})}}class Xt extends Qt{constructor(e,t){super(e,t),this._backing=t}get type(){return"audio"}get codec(){return this._backing.getCodec()}get numberOfChannels(){return this._backing.getNumberOfChannels()}get sampleRate(){return this._backing.getSampleRate()}getDecoderConfig(){return this._backing.getDecoderConfig()}getCodecParameterString(){return u(this,null,function*(){var e;const t=yield this._backing.getDecoderConfig();return null!=(e=null==t?void 0:t.codec)?e:null})}canDecode(){return u(this,null,function*(){try{const e=yield this._backing.getDecoderConfig();if(!e)return!1;const t=this._backing.getCodec();if(p(null!==t),ct.some(r=>r.supports(t,e)))return!0;if(e.codec.startsWith("pcm-"))return!0;if("undefined"===typeof AudioDecoder)return!1;return!0===(yield AudioDecoder.isConfigSupported(e)).supported}catch(e){return console.error("Error during decodability check:",e),!1}})}determinePacketType(e){return u(this,null,function*(){if(!(e instanceof dt))throw new TypeError("packet must be an EncodedPacket.");return null===this.codec?null:"key"})}}const Yt=e=>{let t=Cn(e);const r=Nn(e,4);let i=8;1===t&&(t=Fn(e),i=16);const n=t-i;return n<0?null:{name:r,totalSize:t,headerSize:i,contentSize:n}},Jt=e=>Bn(e)/65536,Zt=e=>Bn(e)/1073741824,er=e=>{let t=0;for(let r=0;r<4;r++){t<<=7;const r=Sn(e);if(t|=127&r,0===(128&r))break}return t},tr=e=>{let t=wn(e);return e.skip(2),t=Math.min(t,e.remainingLength),w.decode(Tn(e,t))},rr=e=>{const t=Yt(e);if(!t||"data"!==t.name)return null;if(e.remainingLength<8)return null;const r=Cn(e);e.skip(4);const i=Tn(e,t.contentSize-8);switch(r){case 1:return w.decode(i);case 2:return new TextDecoder("utf-16be").decode(i);case 13:return new fe(i,"image/jpeg");case 14:return new fe(i,"image/png");case 27:return new fe(i,"image/bmp");default:return i}};class ir extends ot{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.currentFragment=null,this.lastReadFragment=null,this.reader=e._reader}computeDuration(){return u(this,null,function*(){const e=yield this.getTracks(),t=yield Promise.all(e.map(e=>e.computeDuration()));return Math.max(0,...t)})}getTracks(){return u(this,null,function*(){return yield this.readMetadata(),this.tracks.map(e=>e.inputTrack)})}getMimeType(){return u(this,null,function*(){yield this.readMetadata();const e=yield Promise.all(this.tracks.map(e=>e.inputTrack.getCodecParameterString()));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isQuickTime?"quicktime":"mp4");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)}),hasAudio:this.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)}),codecStrings:e.filter(Boolean)})})}getMetadataTags(){return u(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}readMetadata(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>u(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,8,16);if(t instanceof Promise&&(t=yield t),!t)break;const r=e,i=Yt(t);if(!i)break;if("ftyp"===i.name){const e=Nn(t,4);this.isQuickTime="qt  "===e}else if("moov"===i.name){let e=this.reader.requestSlice(t.filePos,i.contentSize);if(e instanceof Promise&&(e=yield e),!e)break;this.moovSlice=e,this.readContiguousBoxes(this.moovSlice),this.tracks.sort((e,t)=>Number(t.disposition.default)-Number(e.disposition.default));for(const t of this.tracks){const e=t.editListPreviousSegmentDurations/this.movieTimescale;t.editListOffset-=Math.round(e*t.timescale)}break}e=r+i.totalSize}if(this.isFragmented&&null!==this.reader.fileSize){let e=this.reader.requestSlice(this.reader.fileSize-4,4);e instanceof Promise&&(e=yield e),p(e);const t=Cn(e),r=this.reader.fileSize-t;if(r>=0&&r<=this.reader.fileSize-16){let e=this.reader.requestSliceRange(r,8,16);if(e instanceof Promise&&(e=yield e),e){const t=Yt(e);if(t&&"mfra"===t.name){let r=this.reader.requestSlice(e.filePos,t.contentSize);r instanceof Promise&&(r=yield r),r&&this.readContiguousBoxes(r)}}}}}))()}getSampleTableForTrack(e){var t,r;if(e.sampleTable)return e.sampleTable;const i={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};e.sampleTable=i,p(this.moovSlice);const n=this.moovSlice.slice(e.sampleTableByteOffset);this.currentTrack=e,this.traverseBox(n),this.currentTrack=null;if("audio"===(null==(t=e.info)?void 0:t.type)&&e.info.codec&&ke.includes(e.info.codec)&&0===i.sampleCompositionTimeOffsets.length){p("audio"===(null==(r=e.info)?void 0:r.type));const t=_e(e.info.codec),n=[],s=[];for(let r=0;r<i.sampleToChunk.length;r++){const a=i.sampleToChunk[r],o=i.sampleToChunk[r+1],l=(o?o.startChunkIndex:i.chunkOffsets.length)-a.startChunkIndex;for(let r=0;r<l;r++){const o=a.startSampleIndex+r*a.samplesPerChunk,l=o+a.samplesPerChunk,c=N(i.sampleTimingEntries,o,e=>e.startIndex),u=i.sampleTimingEntries[c],d=N(i.sampleTimingEntries,l,e=>e.startIndex),h=i.sampleTimingEntries[d],m=u.startDecodeTimestamp+(o-u.startIndex)*u.delta,f=h.startDecodeTimestamp+(l-h.startIndex)*h.delta-m,p=k(n);p&&p.delta===f?p.count++:n.push({startIndex:a.startChunkIndex+r,startDecodeTimestamp:m,count:1,delta:f});const g=a.samplesPerChunk*t.sampleSize*e.info.numberOfChannels;s.push(g)}a.startSampleIndex=a.startChunkIndex,a.samplesPerChunk=1}i.sampleTimingEntries=n,i.sampleSizes=s}if(i.sampleCompositionTimeOffsets.length>0){i.presentationTimestamps=[];for(const e of i.sampleTimingEntries)for(let t=0;t<e.count;t++)i.presentationTimestamps.push({presentationTimestamp:e.startDecodeTimestamp+t*e.delta,sampleIndex:e.startIndex+t});for(const e of i.sampleCompositionTimeOffsets)for(let t=0;t<e.count;t++){const r=e.startIndex+t,n=i.presentationTimestamps[r];n&&(n.presentationTimestamp+=e.offset)}i.presentationTimestamps.sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp),i.presentationTimestampIndexMap=Array(i.presentationTimestamps.length).fill(-1);for(let e=0;e<i.presentationTimestamps.length;e++)i.presentationTimestampIndexMap[i.presentationTimestamps[e].sampleIndex]=e}return i}readFragment(e){return u(this,null,function*(){var t;if((null==(t=this.lastReadFragment)?void 0:t.moofOffset)===e)return this.lastReadFragment;let r=this.reader.requestSliceRange(e,8,16);r instanceof Promise&&(r=yield r),p(r);const i=Yt(r);p("moof"===(null==i?void 0:i.name));let n=this.reader.requestSlice(e,i.totalSize);n instanceof Promise&&(n=yield n),p(n),this.traverseBox(n);const s=this.lastReadFragment;p(s&&s.moofOffset===e);for(const[,e]of s.trackData){const t=e.track,{fragmentPositionCache:r}=t;if(!e.startTimestampIsFinal){const i=t.fragmentLookupTable.find(e=>e.moofOffset===s.moofOffset);if(i)dr(e,i.timestamp);else{const t=N(r,s.moofOffset-1,e=>e.moofOffset);if(-1!==t){const i=r[t];dr(e,i.endTimestamp)}}e.startTimestampIsFinal=!0}const i=N(r,e.startTimestamp,e=>e.startTimestamp);-1!==i&&r[i].moofOffset===s.moofOffset||r.splice(i+1,0,{moofOffset:s.moofOffset,startTimestamp:e.startTimestamp,endTimestamp:e.endTimestamp})}return s})}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,r=Yt(e);if(!r)break;yield{boxInfo:r,slice:e},e.filePos=t+r.totalSize}}traverseBox(e){var t,r,i,n,s,a,o,l,u,d,h,m,f,y,T,S,I,P,C,B,F,D,A,R,M,N,z,O,L,U,V,q,H,W,j,K,Q,G,Y,J,Z,ee,te,re,ie;const ne=e.filePos,se=Yt(e);if(!se)return!1;const ae=e.filePos,oe=ne+se.totalSize;switch(se.name){case"mdia":case"minf":case"dinf":case"mfra":case"edts":case"wave":this.readContiguousBoxes(e.slice(ae,se.contentSize));break;case"mvhd":{const t=Sn(e);e.skip(3),1===t?(e.skip(16),this.movieTimescale=Cn(e),this.movieDurationInTimescale=Fn(e)):(e.skip(8),this.movieTimescale=Cn(e),this.movieDurationInTimescale=Cn(e))}break;case"trak":{const t={id:-1,demuxer:this,inputTrack:null,disposition:c({},ge),info:null,timescale:-1,durationInMovieTimescale:-1,durationInMediaTimescale:-1,rotation:0,internalCodecId:null,name:null,languageCode:$,sampleTableByteOffset:-1,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:0,editListOffset:0};if(this.currentTrack=t,this.readContiguousBoxes(e.slice(ae,se.contentSize)),-1!==t.id&&-1!==t.timescale&&null!==t.info)if("video"===t.info.type&&-1!==t.info.width){const e=t;t.inputTrack=new Gt(this.input,new sr(e)),this.tracks.push(t)}else if("audio"===t.info.type&&-1!==t.info.numberOfChannels){const e=t;t.inputTrack=new Xt(this.input,new ar(e)),this.tracks.push(t)}this.currentTrack=null}break;case"tkhd":{const t=this.currentTrack;if(!t)break;const r=Sn(e),i=!!(1&In(e));if(t.disposition.default=i,0===r)e.skip(8),t.id=Cn(e),e.skip(4),t.durationInMovieTimescale=Cn(e);else{if(1!==r)throw new Error(`Incorrect track header version ${r}.`);e.skip(16),t.id=Cn(e),e.skip(4),t.durationInMovieTimescale=Fn(e)}e.skip(16);const n=[Jt(e),Jt(e),Zt(e),Jt(e),Jt(e),Zt(e),Jt(e),Jt(e),Zt(e)],s=g((le=hr(n),ce=90,Math.round(le/ce)*ce));p(0===s||90===s||180===s||270===s),t.rotation=s}break;case"elst":{const t=this.currentTrack;if(!t)break;const r=Sn(e);e.skip(3);let i=!1,n=0;const s=Cn(e);for(let a=0;a<s;a++){const s=1===r?Fn(e):Cn(e),a=1===r?Dn(e):Bn(e),o=Jt(e);if(0!==s){if(i){console.warn("Unsupported edit list: multiple edits are not currently supported. Only using first edit.");break}if(-1!==a){if(1!==o){console.warn("Unsupported edit list entry: media rate must be 1.");break}t.editListPreviousSegmentDurations=n,t.editListOffset=a,i=!0}else n+=s}}}break;case"mdhd":{const t=this.currentTrack;if(!t)break;const r=Sn(e);e.skip(3),0===r?(e.skip(8),t.timescale=Cn(e),t.durationInMediaTimescale=Cn(e)):1===r&&(e.skip(16),t.timescale=Cn(e),t.durationInMediaTimescale=Fn(e));let i=wn(e);if(i>0){t.languageCode="";for(let e=0;e<3;e++)t.languageCode=String.fromCharCode(96+(31&i))+t.languageCode,i>>=5;X(t.languageCode)||(t.languageCode=$)}}break;case"hdlr":{const t=this.currentTrack;if(!t)break;e.skip(8);const r=Nn(e,4);"vide"===r?t.info={type:"video",width:-1,height:-1,codec:null,codecDescription:null,colorSpace:null,avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null}:"soun"===r&&(t.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null})}break;case"stbl":{const t=this.currentTrack;if(!t)break;t.sampleTableByteOffset=ne,this.readContiguousBoxes(e.slice(ae,se.contentSize))}break;case"stsd":{const t=this.currentTrack;if(!t)break;if(null===t.info||t.sampleTable)break;const r=Sn(e);e.skip(3);const i=Cn(e);for(let n=0;n<i;n++){const i=e.filePos,n=Yt(e);if(!n)break;t.internalCodecId=n.name;const s=n.name.toLowerCase();if("video"===t.info.type)"avc1"===s||"avc3"===s?(t.info.codec="avc",t.info.avcType="avc1"===s?1:3):"hvc1"===s||"hev1"===s?t.info.codec="hevc":"vp08"===s?t.info.codec="vp8":"vp09"===s?t.info.codec="vp9":"av01"===s?t.info.codec="av1":console.warn(`Unsupported video codec (sample entry type '${n.name}').`),e.skip(24),t.info.width=wn(e),t.info.height=wn(e),e.skip(50),this.readContiguousBoxes(e.slice(e.filePos,i+n.totalSize-e.filePos));else{"mp4a"===s||("opus"===s?t.info.codec="opus":"flac"===s?t.info.codec="flac":"twos"===s||"sowt"===s||"raw "===s||"in24"===s||"in32"===s||"fl32"===s||"fl64"===s||"lpcm"===s||"ipcm"===s||"fpcm"===s||("ulaw"===s?t.info.codec="ulaw":"alaw"===s?t.info.codec="alaw":console.warn(`Unsupported audio codec (sample entry type '${n.name}').`))),e.skip(8);const a=wn(e);e.skip(6);let o=wn(e),l=wn(e);e.skip(4);let c=Cn(e)/65536;if(0===r&&a>0)if(1===a)e.skip(4),l=8*Cn(e),e.skip(8);else if(2===a){e.skip(4),c=Mn(e),o=Cn(e),e.skip(4),l=Cn(e);const r=Cn(e);if(e.skip(8),"lpcm"===s){const e=l+7>>3,i=Boolean(1&r),n=Boolean(2&r),s=4&r?-1:0;l>0&&l<=64&&(i?32===l&&(t.info.codec=n?"pcm-f32be":"pcm-f32"):s&1<<e-1?1===e?t.info.codec="pcm-s8":2===e?t.info.codec=n?"pcm-s16be":"pcm-s16":3===e?t.info.codec=n?"pcm-s24be":"pcm-s24":4===e&&(t.info.codec=n?"pcm-s32be":"pcm-s32"):1===e&&(t.info.codec="pcm-u8")),null===t.info.codec&&console.warn("Unsupported PCM format.")}}"opus"===t.info.codec&&(c=xe),t.info.numberOfChannels=o,t.info.sampleRate=c,"twos"===s?8===l?t.info.codec="pcm-s8":16===l?t.info.codec="pcm-s16be":(console.warn(`Unsupported sample size ${l} for codec 'twos'.`),t.info.codec=null):"sowt"===s?8===l?t.info.codec="pcm-s8":16===l?t.info.codec="pcm-s16":(console.warn(`Unsupported sample size ${l} for codec 'sowt'.`),t.info.codec=null):"raw "===s?t.info.codec="pcm-u8":"in24"===s?t.info.codec="pcm-s24be":"in32"===s?t.info.codec="pcm-s32be":"fl32"===s?t.info.codec="pcm-f32be":"fl64"===s?t.info.codec="pcm-f64be":"ipcm"===s?t.info.codec="pcm-s16be":"fpcm"===s&&(t.info.codec="pcm-f32be"),this.readContiguousBoxes(e.slice(e.filePos,i+n.totalSize-e.filePos))}}}break;case"avcC":{const t=this.currentTrack;if(!t)break;p(t.info),t.info.codecDescription=Tn(e,se.contentSize)}break;case"hvcC":{const t=this.currentTrack;if(!t)break;p(t.info),t.info.codecDescription=Tn(e,se.contentSize)}break;case"vpcC":{const r=this.currentTrack;if(!r)break;p("video"===(null==(t=r.info)?void 0:t.type)),e.skip(4);const i=Sn(e),n=Sn(e),s=Sn(e),a=s>>4,o=s>>1&7,l=1&s,c=Sn(e),u=Sn(e),d=Sn(e);r.info.vp9CodecInfo={profile:i,level:n,bitDepth:a,chromaSubsampling:o,videoFullRangeFlag:l,colourPrimaries:c,transferCharacteristics:u,matrixCoefficients:d}}break;case"av1C":{const t=this.currentTrack;if(!t)break;p("video"===(null==(r=t.info)?void 0:r.type)),e.skip(1);const i=Sn(e),n=i>>5,s=31&i,a=Sn(e),o=a>>7,l=a>>6&1,c=a>>4&1,u=a>>3&1,d=a>>2&1,h=3&a,m=2===n&&l?a>>5&1?12:10:l?10:8;t.info.av1CodecInfo={profile:n,level:s,tier:o,bitDepth:m,monochrome:c,chromaSubsamplingX:u,chromaSubsamplingY:d,chromaSamplePosition:h}}break;case"colr":{const t=this.currentTrack;if(!t)break;p("video"===(null==(i=t.info)?void 0:i.type));if("nclx"!==Nn(e,4))break;const r=wn(e),n=wn(e),s=wn(e),a=Boolean(128&Sn(e));t.info.colorSpace={primaries:x[r],transfer:_[n],matrix:E[s],fullRange:a}}break;case"esds":{const t=this.currentTrack;if(!t)break;p("audio"===(null==(n=t.info)?void 0:n.type)),e.skip(4);p(3===Sn(e)),er(e),e.skip(2);const r=Sn(e),i=0!==(64&r),s=0!==(32&r);if(0!==(128&r)&&e.skip(2),i){const t=Sn(e);e.skip(t)}s&&e.skip(2);p(4===Sn(e));const a=er(e),o=e.filePos,l=Sn(e);if(64===l||103===l?(t.info.codec="aac",t.info.aacCodecInfo={isMpeg2:103===l}):105===l||107===l?t.info.codec="mp3":221===l?t.info.codec="vorbis":console.warn(`Unsupported audio codec (objectTypeIndication ${l}) - discarding track.`),e.skip(12),a>e.filePos-o){p(5===Sn(e));const r=er(e);if(t.info.codecDescription=Tn(e,r),"aac"===t.info.codec){const e=Pe(t.info.codecDescription);null!==e.numberOfChannels&&(t.info.numberOfChannels=e.numberOfChannels),null!==e.sampleRate&&(t.info.sampleRate=e.sampleRate)}}}break;case"enda":{const t=this.currentTrack;if(!t)break;p("audio"===(null==(s=t.info)?void 0:s.type));255&wn(e)&&("pcm-s16be"===t.info.codec?t.info.codec="pcm-s16":"pcm-s24be"===t.info.codec?t.info.codec="pcm-s24":"pcm-s32be"===t.info.codec?t.info.codec="pcm-s32":"pcm-f32be"===t.info.codec?t.info.codec="pcm-f32":"pcm-f64be"===t.info.codec&&(t.info.codec="pcm-f64"))}break;case"pcmC":{const t=this.currentTrack;if(!t)break;p("audio"===(null==(a=t.info)?void 0:a.type)),e.skip(4);const r=Sn(e),i=Boolean(1&r),n=Sn(e);"pcm-s16be"===t.info.codec?i?16===n?t.info.codec="pcm-s16":24===n?t.info.codec="pcm-s24":32===n?t.info.codec="pcm-s32":(console.warn(`Invalid ipcm sample size ${n}.`),t.info.codec=null):16===n?t.info.codec="pcm-s16be":24===n?t.info.codec="pcm-s24be":32===n?t.info.codec="pcm-s32be":(console.warn(`Invalid ipcm sample size ${n}.`),t.info.codec=null):"pcm-f32be"===t.info.codec&&(i?32===n?t.info.codec="pcm-f32":64===n?t.info.codec="pcm-f64":(console.warn(`Invalid fpcm sample size ${n}.`),t.info.codec=null):32===n?t.info.codec="pcm-f32be":64===n?t.info.codec="pcm-f64be":(console.warn(`Invalid fpcm sample size ${n}.`),t.info.codec=null));break}case"dOps":{const t=this.currentTrack;if(!t)break;p("audio"===(null==(o=t.info)?void 0:o.type)),e.skip(1);const r=Sn(e),i=wn(e),n=Cn(e),s=Pn(e),a=Sn(e);let l;l=0!==a?Tn(e,2+r):new Uint8Array(0);const c=new Uint8Array(19+l.byteLength),u=new DataView(c.buffer);u.setUint32(0,1332770163,!1),u.setUint32(4,1214603620,!1),u.setUint8(8,1),u.setUint8(9,r),u.setUint16(10,i,!0),u.setUint32(12,n,!0),u.setInt16(16,s,!0),u.setUint8(18,a),c.set(l,19),t.info.codecDescription=c,t.info.numberOfChannels=r}break;case"dfLa":{const t=this.currentTrack;if(!t)break;p("audio"===(null==(l=t.info)?void 0:l.type)),e.skip(4);const r=127,i=128,n=e.filePos;for(;e.filePos<oe;){const n=Sn(e),s=In(e);if((n&r)===nt.STREAMINFO){e.skip(10);const r=Cn(e),i=r>>>12,n=1+(r>>9&7);t.info.sampleRate=i,t.info.numberOfChannels=n,e.skip(20)}else e.skip(s);if(n&i)break}const s=e.filePos;e.filePos=n;const a=Tn(e,s-n),o=new Uint8Array(4+a.byteLength);new DataView(o.buffer).setUint32(0,1716281667,!1),o.set(a,4),t.info.codecDescription=o}break;case"stts":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=Cn(e);let i=0,n=0;for(let s=0;s<r;s++){const r=Cn(e),s=Cn(e);t.sampleTable.sampleTimingEntries.push({startIndex:i,startDecodeTimestamp:n,count:r,delta:s}),i+=r,n+=r*s}}break;case"ctts":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=Cn(e);let i=0;for(let n=0;n<r;n++){const r=Cn(e),n=Bn(e);t.sampleTable.sampleCompositionTimeOffsets.push({startIndex:i,count:r,offset:n}),i+=r}}break;case"stsz":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=Cn(e),i=Cn(e);if(0===r)for(let n=0;n<i;n++){const r=Cn(e);t.sampleTable.sampleSizes.push(r)}else t.sampleTable.sampleSizes.push(r)}break;case"stz2":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4),e.skip(3);const r=Sn(e),i=Cn(e),n=Tn(e,Math.ceil(i*r/8)),s=new b(n);for(let e=0;e<i;e++){const e=s.readBits(r);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 r=Cn(e);for(let i=0;i<r;i++){const r=Cn(e)-1;t.sampleTable.keySampleIndices.push(r)}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 r=Cn(e);for(let n=0;n<r;n++){const r=Cn(e)-1,i=Cn(e),n=Cn(e);t.sampleTable.sampleToChunk.push({startSampleIndex:-1,startChunkIndex:r,samplesPerChunk:i,sampleDescriptionIndex:n})}let i=0;for(let e=0;e<t.sampleTable.sampleToChunk.length;e++)if(t.sampleTable.sampleToChunk[e].startSampleIndex=i,e<t.sampleTable.sampleToChunk.length-1){i+=(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 r=Cn(e);for(let i=0;i<r;i++){const r=Cn(e);t.sampleTable.chunkOffsets.push(r)}}break;case"co64":{const t=this.currentTrack;if(!t)break;if(!t.sampleTable)break;e.skip(4);const r=Cn(e);for(let i=0;i<r;i++){const r=Fn(e);t.sampleTable.chunkOffsets.push(r)}}break;case"mvex":this.isFragmented=!0,this.readContiguousBoxes(e.slice(ae,se.contentSize));break;case"mehd":{const t=Sn(e);e.skip(3);const r=1===t?Fn(e):Cn(e);this.movieDurationInTimescale=r}break;case"trex":{e.skip(4);const t=Cn(e),r=Cn(e),i=Cn(e),n=Cn(e),s=Cn(e);this.fragmentTrackDefaults.push({trackId:t,defaultSampleDescriptionIndex:r,defaultSampleDuration:i,defaultSampleSize:n,defaultSampleFlags:s})}break;case"tfra":{const t=Sn(e);e.skip(3);const r=Cn(e),i=this.tracks.find(e=>e.id===r);if(!i)break;const n=Cn(e),s=(12&n)>>2,a=3&n,o=[Sn,wn,In,Cn],l=o[(48&n)>>4],c=o[s],u=o[a],d=Cn(e);for(let h=0;h<d;h++){const r=1===t?Fn(e):Cn(e),n=1===t?Fn(e):Cn(e);l(e),c(e),u(e),i.fragmentLookupTable.push({timestamp:r,moofOffset:n})}i.fragmentLookupTable.sort((e,t)=>e.timestamp-t.timestamp);for(let e=0;e<i.fragmentLookupTable.length-1;e++){const t=i.fragmentLookupTable[e],r=i.fragmentLookupTable[e+1];t.timestamp===r.timestamp&&(i.fragmentLookupTable.splice(e+1,1),e--)}}break;case"moof":this.currentFragment={moofOffset:ne,moofSize:se.totalSize,implicitBaseDataOffset:ne,trackData:new Map},this.readContiguousBoxes(e.slice(ae,se.contentSize)),this.lastReadFragment=this.currentFragment,this.currentFragment=null;break;case"traf":if(p(this.currentFragment),this.readContiguousBoxes(e.slice(ae,se.contentSize)),this.currentTrack){const e=this.currentFragment.trackData.get(this.currentTrack.id);if(e){const{currentFragmentState:t}=this.currentTrack;p(t),null!==t.startTimestamp&&(dr(e,t.startTimestamp),e.startTimestampIsFinal=!0)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"tfhd":{p(this.currentFragment),e.skip(1);const t=In(e),r=Boolean(1&t),i=Boolean(2&t),n=Boolean(8&t),s=Boolean(16&t),a=Boolean(32&t),o=Boolean(65536&t),l=Boolean(131072&t),c=Cn(e),f=this.tracks.find(e=>e.id===c);if(!f)break;const g=this.fragmentTrackDefaults.find(e=>e.trackId===c);this.currentTrack=f,f.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:null!=(u=null==g?void 0:g.defaultSampleDescriptionIndex)?u:null,defaultSampleDuration:null!=(d=null==g?void 0:g.defaultSampleDuration)?d:null,defaultSampleSize:null!=(h=null==g?void 0:g.defaultSampleSize)?h:null,defaultSampleFlags:null!=(m=null==g?void 0:g.defaultSampleFlags)?m:null,startTimestamp:null},r?f.currentFragmentState.baseDataOffset=Fn(e):l&&(f.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),i&&(f.currentFragmentState.sampleDescriptionIndex=Cn(e)),n&&(f.currentFragmentState.defaultSampleDuration=Cn(e)),s&&(f.currentFragmentState.defaultSampleSize=Cn(e)),a&&(f.currentFragmentState.defaultSampleFlags=Cn(e)),o&&(f.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{const t=this.currentTrack;if(!t)break;p(t.currentFragmentState);const r=Sn(e);e.skip(3);const i=0===r?Cn(e):Fn(e);t.currentFragmentState.startTimestamp=i}break;case"trun":{const t=this.currentTrack;if(!t)break;if(p(this.currentFragment),p(t.currentFragmentState),this.currentFragment.trackData.has(t.id)){console.warn("Can't have two trun boxes for the same track in one fragment. Ignoring...");break}const r=Sn(e),i=In(e),n=Boolean(1&i),s=Boolean(4&i),a=Boolean(256&i),o=Boolean(512&i),l=Boolean(1024&i),c=Boolean(2048&i),u=Cn(e);let d=t.currentFragmentState.baseDataOffset;n&&(d+=Bn(e));let h=null;s&&(h=Cn(e));let m=d;if(0===u){this.currentFragment.implicitBaseDataOffset=m;break}let f=0;const g={track:t,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1};this.currentFragment.trackData.set(t.id,g);for(let k=0;k<u;k++){let i,n,s;a?i=Cn(e):(p(null!==t.currentFragmentState.defaultSampleDuration),i=t.currentFragmentState.defaultSampleDuration),o?n=Cn(e):(p(null!==t.currentFragmentState.defaultSampleSize),n=t.currentFragmentState.defaultSampleSize),l?s=Cn(e):(p(null!==t.currentFragmentState.defaultSampleFlags),s=t.currentFragmentState.defaultSampleFlags),0===k&&null!==h&&(s=h);let u=0;c&&(u=0===r?Cn(e):Bn(e));const d=!(65536&s);g.samples.push({presentationTimestamp:f+u,duration:i,byteOffset:m,byteSize:n,isKeyFrame:d}),m+=n,f+=i}g.presentationTimestamps=g.samples.map((e,t)=>({presentationTimestamp:e.presentationTimestamp,sampleIndex:t})).sort((e,t)=>e.presentationTimestamp-t.presentationTimestamp);for(let e=0;e<g.presentationTimestamps.length;e++){const t=g.presentationTimestamps[e],r=g.samples[t.sampleIndex];if(null===g.firstKeyFrameTimestamp&&r.isKeyFrame&&(g.firstKeyFrameTimestamp=r.presentationTimestamp),e<g.presentationTimestamps.length-1){const i=g.presentationTimestamps[e+1];r.duration=i.presentationTimestamp-t.presentationTimestamp}}const b=g.samples[g.presentationTimestamps[0].sampleIndex],y=g.samples[k(g.presentationTimestamps).sampleIndex];g.startTimestamp=b.presentationTimestamp,g.endTimestamp=y.presentationTimestamp+y.duration,this.currentFragment.implicitBaseDataOffset=m}break;case"udta":{const t=this.iterateContiguousBoxes(e.slice(ae,se.contentSize));for(const{boxInfo:e,slice:r}of t){if("meta"!==e.name&&!this.currentTrack){const t=r.filePos;null!=(f=this.metadataTags).raw||(f.raw={}),"\xa9"===e.name[0]?null!=(y=this.metadataTags.raw)[T=e.name]||(y[T]=tr(r)):null!=(S=this.metadataTags.raw)[I=e.name]||(S[I]=Tn(r,e.contentSize)),r.filePos=t}switch(e.name){case"meta":r.skip(-e.headerSize),this.traverseBox(r);break;case"\xa9nam":case"name":this.currentTrack?this.currentTrack.name=w.decode(Tn(r,e.contentSize)):null!=(P=this.metadataTags).title||(P.title=tr(r));break;case"\xa9des":this.currentTrack||null!=(C=this.metadataTags).description||(C.description=tr(r));break;case"\xa9ART":this.currentTrack||null!=(B=this.metadataTags).artist||(B.artist=tr(r));break;case"\xa9alb":this.currentTrack||null!=(F=this.metadataTags).album||(F.album=tr(r));break;case"albr":this.currentTrack||null!=(D=this.metadataTags).albumArtist||(D.albumArtist=tr(r));break;case"\xa9gen":this.currentTrack||null!=(A=this.metadataTags).genre||(A.genre=tr(r));break;case"\xa9day":if(!this.currentTrack){const e=new Date(tr(r));Number.isNaN(e.getTime())||null!=(R=this.metadataTags).date||(R.date=e)}break;case"\xa9cmt":this.currentTrack||null!=(M=this.metadataTags).comment||(M.comment=tr(r));break;case"\xa9lyr":this.currentTrack||null!=(N=this.metadataTags).lyrics||(N.lyrics=tr(r))}}}break;case"meta":{if(this.currentTrack)break;const t=0!==Cn(e);this.currentMetadataKeys=new Map,t?this.readContiguousBoxes(e.slice(ae,se.contentSize)):this.readContiguousBoxes(e.slice(ae+4,se.contentSize-4)),this.currentMetadataKeys=null}break;case"keys":{if(!this.currentMetadataKeys)break;e.skip(4);const t=Cn(e);for(let r=0;r<t;r++){const t=Cn(e);e.skip(4);const i=w.decode(Tn(e,t-8));this.currentMetadataKeys.set(r+1,i)}}break;case"ilst":{if(!this.currentMetadataKeys)break;const t=this.iterateContiguousBoxes(e.slice(ae,se.contentSize));for(const{boxInfo:e,slice:r}of t){let t=e.name;const i=(t.charCodeAt(0)<<24)+(t.charCodeAt(1)<<16)+(t.charCodeAt(2)<<8)+t.charCodeAt(3);this.currentMetadataKeys.has(i)&&(t=this.currentMetadataKeys.get(i));const n=rr(r);switch(null!=(z=this.metadataTags).raw||(z.raw={}),null!=(O=this.metadataTags.raw)[t]||(O[t]=n),t){case"\xa9nam":case"titl":case"com.apple.quicktime.title":case"title":"string"===typeof n&&(null!=(L=this.metadataTags).title||(L.title=n));break;case"\xa9des":case"desc":case"dscp":case"com.apple.quicktime.description":case"description":"string"===typeof n&&(null!=(U=this.metadataTags).description||(U.description=n));break;case"\xa9ART":case"com.apple.quicktime.artist":case"artist":"string"===typeof n&&(null!=(V=this.metadataTags).artist||(V.artist=n));break;case"\xa9alb":case"albm":case"com.apple.quicktime.album":case"album":"string"===typeof n&&(null!=(q=this.metadataTags).album||(q.album=n));break;case"aART":case"album_artist":"string"===typeof n&&(null!=(H=this.metadataTags).albumArtist||(H.albumArtist=n));break;case"\xa9cmt":case"com.apple.quicktime.comment":case"comment":"string"===typeof n&&(null!=(W=this.metadataTags).comment||(W.comment=n));break;case"\xa9gen":case"gnre":case"com.apple.quicktime.genre":case"genre":"string"===typeof n&&(null!=(j=this.metadataTags).genre||(j.genre=n));break;case"\xa9lyr":case"lyrics":"string"===typeof n&&(null!=(K=this.metadataTags).lyrics||(K.lyrics=n));break;case"\xa9day":case"rldt":case"com.apple.quicktime.creationdate":case"date":if("string"===typeof n){const e=new Date(n);Number.isNaN(e.getTime())||null!=(Q=this.metadataTags).date||(Q.date=e)}break;case"covr":case"com.apple.quicktime.artwork":n instanceof fe?(null!=(G=this.metadataTags).images||(G.images=[]),this.metadataTags.images.push({data:n.data,kind:"coverFront",mimeType:n.mimeType})):n instanceof Uint8Array&&(null!=(Y=this.metadataTags).images||(Y.images=[]),this.metadataTags.images.push({data:n,kind:"coverFront",mimeType:"image/*"}));break;case"track":if("string"===typeof n){const e=n.split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(null!=(J=this.metadataTags).trackNumber||(J.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&(null!=(Z=this.metadataTags).tracksTotal||(Z.tracksTotal=r))}break;case"trkn":if(n instanceof Uint8Array&&n.length>=6){const e=v(n),t=e.getUint16(2,!1),r=e.getUint16(4,!1);t>0&&(null!=(ee=this.metadataTags).trackNumber||(ee.trackNumber=t)),r>0&&(null!=(te=this.metadataTags).tracksTotal||(te.tracksTotal=r))}break;case"disc":case"disk":if(n instanceof Uint8Array&&n.length>=6){const e=v(n),t=e.getUint16(2,!1),r=e.getUint16(4,!1);t>0&&(null!=(re=this.metadataTags).discNumber||(re.discNumber=t)),r>0&&(null!=(ie=this.metadataTags).discsTotal||(ie.discsTotal=r))}}}}}var le,ce;return e.filePos=oe,!0}}class nr{constructor(e){this.internalTrack=e,this.packetToSampleIndex=new WeakMap,this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}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}getDisposition(){return this.internalTrack.disposition}computeDuration(){return u(this,null,function*(){var e,t;const r=yield this.getPacket(1/0,{metadataOnly:!0});return(null!=(e=null==r?void 0:r.timestamp)?e:0)+(null!=(t=null==r?void 0:r.duration)?t:0)})}getFirstTimestamp(){return u(this,null,function*(){var e;const t=yield this.getFirstPacket({metadataOnly:!0});return null!=(e=null==t?void 0:t.timestamp)?e:0})}getFirstPacket(e){return u(this,null,function*(){const t=yield this.fetchPacketForSampleIndex(0,e);return t||!this.internalTrack.demuxer.isFragmented?t:this.performFragmentedLookup(null,e=>e.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,e)})}mapTimestampIntoTimescale(e){return Q(e*this.internalTrack.timescale)+this.internalTrack.editListOffset}getPacket(e,t){return u(this,null,function*(){const r=this.mapTimestampIntoTimescale(e),i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=or(i,r),s=yield this.fetchPacketForSampleIndex(n,t);return mr(i)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const i=N(t.presentationTimestamps,r,e=>e.presentationTimestamp);return{sampleIndex:-1!==i?t.presentationTimestamps[i].sampleIndex:-1,correctSampleFound:-1!==i&&r<t.endTimestamp}},r,r,t):s})}getNextPacket(e,t){return u(this,null,function*(){const r=this.packetToSampleIndex.get(e);if(void 0!==r)return this.fetchPacketForSampleIndex(r+1,t);const i=this.packetToFragmentLocation.get(e);if(void 0===i)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(i.fragment,e=>{if(e===i.fragment){const t=e.trackData.get(this.internalTrack.id);if(i.sampleIndex+1<t.samples.length)return{sampleIndex:i.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)})}getKeyPacket(e,t){return u(this,null,function*(){const r=this.mapTimestampIntoTimescale(e),i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=lr(i,r),s=yield this.fetchPacketForSampleIndex(n,t);return mr(i)&&this.internalTrack.demuxer.isFragmented?this.performFragmentedLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{sampleIndex:-1,correctSampleFound:!1};const i=U(t.presentationTimestamps,e=>t.samples[e.sampleIndex].isKeyFrame&&e.presentationTimestamp<=r);return{sampleIndex:-1!==i?t.presentationTimestamps[i].sampleIndex:-1,correctSampleFound:-1!==i&&r<t.endTimestamp}},r,r,t):s})}getNextKeyPacket(e,t){return u(this,null,function*(){const r=this.packetToSampleIndex.get(e);if(void 0!==r){const e=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),i=ur(e,r);return this.fetchPacketForSampleIndex(i,t)}const i=this.packetToFragmentLocation.get(e);if(void 0===i)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(i.fragment,e=>{if(e===i.fragment){const t=e.trackData.get(this.internalTrack.id).samples.findIndex((e,t)=>e.isKeyFrame&&t>i.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 p(-1!==e),{sampleIndex:e,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,t)})}fetchPacketForSampleIndex(e,t){return u(this,null,function*(){if(-1===e)return null;const r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),i=cr(r,e);if(!i)return null;let n;if(t.metadataOnly)n=ut;else{let e=this.internalTrack.demuxer.reader.requestSlice(i.sampleOffset,i.sampleSize);e instanceof Promise&&(e=yield e),p(e),n=Tn(e,i.sampleSize)}const s=(i.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,a=i.duration/this.internalTrack.timescale,o=new dt(n,i.isKeyFrame?"key":"delta",s,a,e,i.sampleSize);return this.packetToSampleIndex.set(o,e),o})}fetchPacketInFragment(e,t,r){return u(this,null,function*(){if(-1===t)return null;const i=e.trackData.get(this.internalTrack.id).samples[t];let n;if(p(i),r.metadataOnly)n=ut;else{let e=this.internalTrack.demuxer.reader.requestSlice(i.byteOffset,i.byteSize);e instanceof Promise&&(e=yield e),p(e),n=Tn(e,i.byteSize)}const s=(i.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,a=i.duration/this.internalTrack.timescale,o=new dt(n,i.isKeyFrame?"key":"delta",s,a,e.moofOffset+t,i.byteSize);return this.packetToFragmentLocation.set(o,{fragment:e,sampleIndex:t}),o})}performFragmentedLookup(e,t,r,i,n){return u(this,null,function*(){var s,a,o;const l=this.internalTrack.demuxer;let c=null,u=null,d=-1;if(e){const{sampleIndex:r,correctSampleFound:i}=t(e);if(i)return this.fetchPacketInFragment(e,r,n);-1!==r&&(u=e,d=r)}const h=N(this.internalTrack.fragmentLookupTable,r,e=>e.timestamp),m=-1!==h?this.internalTrack.fragmentLookupTable[h]:null,f=N(this.internalTrack.fragmentPositionCache,r,e=>e.startTimestamp),g=-1!==f?this.internalTrack.fragmentPositionCache[f]:null,k=Math.max(null!=(s=null==m?void 0:m.moofOffset)?s:0,null!=(a=null==g?void 0:g.moofOffset)?a:0)||null;let b;for(e?null===k||e.moofOffset>=k?(b=e.moofOffset+e.moofSize,c=e):b=k:b=null!=k?k:0;;){if(c){const e=c.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>i)break}let e=l.reader.requestSliceRange(b,8,16);if(e instanceof Promise&&(e=yield e),!e)break;const r=b,s=Yt(e);if(!s)break;if("moof"===s.name){c=yield l.readFragment(r);const{sampleIndex:e,correctSampleFound:i}=t(c);if(i)return this.fetchPacketInFragment(c,e,n);-1!==e&&(u=c,d=e)}b=r+s.totalSize}if(m&&(!u||u.moofOffset<m.moofOffset)){const e=this.internalTrack.fragmentLookupTable[h-1];p(!e||e.timestamp<m.timestamp);const r=null!=(o=null==e?void 0:e.timestamp)?o:-1/0;return this.performFragmentedLookup(null,t,r,i,n)}return u?this.fetchPacketInFragment(u,d,n):null})}}class sr extends nr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getCodec(){return this.internalTrack.info.codec}getCodedWidth(){return this.internalTrack.info.width}getCodedHeight(){return this.internalTrack.info.height}getRotation(){return this.internalTrack.rotation}getColorSpace(){return u(this,null,function*(){var e,t,r,i;return{primaries:null==(e=this.internalTrack.info.colorSpace)?void 0:e.primaries,transfer:null==(t=this.internalTrack.info.colorSpace)?void 0:t.transfer,matrix:null==(r=this.internalTrack.info.colorSpace)?void 0:r.matrix,fullRange:null==(i=this.internalTrack.info.colorSpace)?void 0:i.fullRange}})}canBeTransparent(){return u(this,null,function*(){return!1})}getDecoderConfig(){return u(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>u(this,null,function*(){var e,t;if("vp9"!==this.internalTrack.info.codec||this.internalTrack.info.vp9CodecInfo){if("av1"===this.internalTrack.info.codec&&!this.internalTrack.info.av1CodecInfo){const e=yield this.getFirstPacket({});this.internalTrack.info.av1CodecInfo=e&&et(e.data)}}else{const e=yield this.getFirstPacket({});this.internalTrack.info.vp9CodecInfo=e&&Je(e.data)}return{codec:Se(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0,colorSpace:null!=(t=this.internalTrack.info.colorSpace)?t:void 0}}))():null})}}class ar extends nr{constructor(e){super(e),this.decoderConfig=null,this.internalTrack=e}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return u(this,null,function*(){var e,t;return this.internalTrack.info.codec?null!=(t=this.decoderConfig)?t:this.decoderConfig={codec:ve(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}:null})}}const or=(e,t)=>{if(e.presentationTimestamps){const r=N(e.presentationTimestamps,t,e=>e.presentationTimestamp);return-1===r?-1:e.presentationTimestamps[r].sampleIndex}{const r=N(e.sampleTimingEntries,t,e=>e.startDecodeTimestamp);if(-1===r)return-1;const i=e.sampleTimingEntries[r];return i.startIndex+Math.min(Math.floor((t-i.startDecodeTimestamp)/i.delta),i.count-1)}},lr=(e,t)=>{var r;if(!e.keySampleIndices)return or(e,t);if(e.presentationTimestamps){const r=N(e.presentationTimestamps,t,e=>e.presentationTimestamp);if(-1===r)return-1;for(let t=r;t>=0;t--){const r=e.presentationTimestamps[t].sampleIndex;if(-1!==M(e.keySampleIndices,r,e=>e))return r}return-1}{const i=or(e,t),n=N(e.keySampleIndices,i,e=>e);return null!=(r=e.keySampleIndices[n])?r:-1}},cr=(e,t)=>{const r=N(e.sampleTimingEntries,t,e=>e.startIndex),i=e.sampleTimingEntries[r];if(!i||i.startIndex+i.count<=t)return null;let n=i.startDecodeTimestamp+(t-i.startIndex)*i.delta;const s=N(e.sampleCompositionTimeOffsets,t,e=>e.startIndex),a=e.sampleCompositionTimeOffsets[s];a&&t-a.startIndex<a.count&&(n+=a.offset);const o=e.sampleSizes[Math.min(t,e.sampleSizes.length-1)],l=N(e.sampleToChunk,t,e=>e.startSampleIndex),c=e.sampleToChunk[l];p(c);const u=c.startChunkIndex+Math.floor((t-c.startSampleIndex)/c.samplesPerChunk),d=e.chunkOffsets[u],h=c.startSampleIndex+(u-c.startChunkIndex)*c.samplesPerChunk;let m=0,f=d;if(1===e.sampleSizes.length)f+=o*(t-h),m+=o*c.samplesPerChunk;else for(let p=h;p<h+c.samplesPerChunk;p++){const r=e.sampleSizes[p];p<t&&(f+=r),m+=r}let g=i.delta;if(e.presentationTimestamps){const r=e.presentationTimestampIndexMap[t];if(p(void 0!==r),r<e.presentationTimestamps.length-1){g=e.presentationTimestamps[r+1].presentationTimestamp-n}}return{presentationTimestamp:n,duration:g,sampleOffset:f,sampleSize:o,chunkOffset:d,chunkSize:m,isKeyFrame:!e.keySampleIndices||-1!==M(e.keySampleIndices,t,e=>e)}},ur=(e,t)=>{var r;if(!e.keySampleIndices)return t+1;const i=N(e.keySampleIndices,t,e=>e);return null!=(r=e.keySampleIndices[i+1])?r:-1},dr=(e,t)=>{e.startTimestamp+=t,e.endTimestamp+=t;for(const r of e.samples)r.presentationTimestamp+=t;for(const r of e.presentationTimestamps)r.presentationTimestamp+=t},hr=e=>{const[t,,,r]=e,i=Math.hypot(t,r),n=t/i,s=r/i,a=-Math.atan2(s,n)*(180/Math.PI);return Number.isFinite(a)?a:0},mr=e=>0===e.sampleSizes.length;var fr,pr;(pr=fr||(fr={}))[pr.EBML=440786851]="EBML",pr[pr.EBMLVersion=17030]="EBMLVersion",pr[pr.EBMLReadVersion=17143]="EBMLReadVersion",pr[pr.EBMLMaxIDLength=17138]="EBMLMaxIDLength",pr[pr.EBMLMaxSizeLength=17139]="EBMLMaxSizeLength",pr[pr.DocType=17026]="DocType",pr[pr.DocTypeVersion=17031]="DocTypeVersion",pr[pr.DocTypeReadVersion=17029]="DocTypeReadVersion",pr[pr.Void=236]="Void",pr[pr.Segment=408125543]="Segment",pr[pr.SeekHead=290298740]="SeekHead",pr[pr.Seek=19899]="Seek",pr[pr.SeekID=21419]="SeekID",pr[pr.SeekPosition=21420]="SeekPosition",pr[pr.Duration=17545]="Duration",pr[pr.Info=357149030]="Info",pr[pr.TimestampScale=2807729]="TimestampScale",pr[pr.MuxingApp=19840]="MuxingApp",pr[pr.WritingApp=22337]="WritingApp",pr[pr.Tracks=374648427]="Tracks",pr[pr.TrackEntry=174]="TrackEntry",pr[pr.TrackNumber=215]="TrackNumber",pr[pr.TrackUID=29637]="TrackUID",pr[pr.TrackType=131]="TrackType",pr[pr.FlagEnabled=185]="FlagEnabled",pr[pr.FlagDefault=136]="FlagDefault",pr[pr.FlagForced=21930]="FlagForced",pr[pr.FlagOriginal=21934]="FlagOriginal",pr[pr.FlagHearingImpaired=21931]="FlagHearingImpaired",pr[pr.FlagVisualImpaired=21932]="FlagVisualImpaired",pr[pr.FlagCommentary=21935]="FlagCommentary",pr[pr.FlagLacing=156]="FlagLacing",pr[pr.Name=21358]="Name",pr[pr.Language=2274716]="Language",pr[pr.LanguageBCP47=2274717]="LanguageBCP47",pr[pr.CodecID=134]="CodecID",pr[pr.CodecPrivate=25506]="CodecPrivate",pr[pr.CodecDelay=22186]="CodecDelay",pr[pr.SeekPreRoll=22203]="SeekPreRoll",pr[pr.DefaultDuration=2352003]="DefaultDuration",pr[pr.Video=224]="Video",pr[pr.PixelWidth=176]="PixelWidth",pr[pr.PixelHeight=186]="PixelHeight",pr[pr.AlphaMode=21440]="AlphaMode",pr[pr.Audio=225]="Audio",pr[pr.SamplingFrequency=181]="SamplingFrequency",pr[pr.Channels=159]="Channels",pr[pr.BitDepth=25188]="BitDepth",pr[pr.SimpleBlock=163]="SimpleBlock",pr[pr.BlockGroup=160]="BlockGroup",pr[pr.Block=161]="Block",pr[pr.BlockAdditions=30113]="BlockAdditions",pr[pr.BlockMore=166]="BlockMore",pr[pr.BlockAdditional=165]="BlockAdditional",pr[pr.BlockAddID=238]="BlockAddID",pr[pr.BlockDuration=155]="BlockDuration",pr[pr.ReferenceBlock=251]="ReferenceBlock",pr[pr.Cluster=524531317]="Cluster",pr[pr.Timestamp=231]="Timestamp",pr[pr.Cues=475249515]="Cues",pr[pr.CuePoint=187]="CuePoint",pr[pr.CueTime=179]="CueTime",pr[pr.CueTrackPositions=183]="CueTrackPositions",pr[pr.CueTrack=247]="CueTrack",pr[pr.CueClusterPosition=241]="CueClusterPosition",pr[pr.Colour=21936]="Colour",pr[pr.MatrixCoefficients=21937]="MatrixCoefficients",pr[pr.TransferCharacteristics=21946]="TransferCharacteristics",pr[pr.Primaries=21947]="Primaries",pr[pr.Range=21945]="Range",pr[pr.Projection=30320]="Projection",pr[pr.ProjectionType=30321]="ProjectionType",pr[pr.ProjectionPoseRoll=30325]="ProjectionPoseRoll",pr[pr.Attachments=423732329]="Attachments",pr[pr.AttachedFile=24999]="AttachedFile",pr[pr.FileDescription=18046]="FileDescription",pr[pr.FileName=18030]="FileName",pr[pr.FileMediaType=18016]="FileMediaType",pr[pr.FileData=18012]="FileData",pr[pr.FileUID=18094]="FileUID",pr[pr.Chapters=272869232]="Chapters",pr[pr.Tags=307544935]="Tags",pr[pr.Tag=29555]="Tag",pr[pr.Targets=25536]="Targets",pr[pr.TargetTypeValue=26826]="TargetTypeValue",pr[pr.TargetType=25546]="TargetType",pr[pr.TagTrackUID=25541]="TagTrackUID",pr[pr.TagEditionUID=25545]="TagEditionUID",pr[pr.TagChapterUID=25540]="TagChapterUID",pr[pr.TagAttachmentUID=25542]="TagAttachmentUID",pr[pr.SimpleTag=26568]="SimpleTag",pr[pr.TagName=17827]="TagName",pr[pr.TagLanguage=17530]="TagLanguage",pr[pr.TagString=17543]="TagString",pr[pr.TagBinary=17541]="TagBinary",pr[pr.ContentEncodings=28032]="ContentEncodings",pr[pr.ContentEncoding=25152]="ContentEncoding",pr[pr.ContentEncodingOrder=20529]="ContentEncodingOrder",pr[pr.ContentEncodingScope=20530]="ContentEncodingScope",pr[pr.ContentCompression=20532]="ContentCompression",pr[pr.ContentCompAlgo=16980]="ContentCompAlgo",pr[pr.ContentCompSettings=16981]="ContentCompSettings",pr[pr.ContentEncryption=20533]="ContentEncryption";const gr=[fr.EBML,fr.Segment],kr=[fr.SeekHead,fr.Info,fr.Cluster,fr.Tracks,fr.Cues,fr.Attachments,fr.Chapters,fr.Tags],br=[...gr,...kr],yr=16,Tr=e=>{if(e.remainingLength<1)return null;const t=Sn(e);if(e.skip(-1),0===t)return null;let r=1,i=128;for(;0===(t&i);)r++,i>>=1;return e.remainingLength<r?null:r},Sr=e=>{if(e.remainingLength<1)return null;const t=Sn(e);if(0===t)return null;let r=1,i=128;for(;0===(t&i);)r++,i>>=1;if(e.remainingLength<r-1)return null;let n=t&i-1;for(let s=1;s<r;s++)n*=256,n+=Sn(e);return n},vr=(e,t)=>{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let r=0;for(let i=0;i<t;i++)r*=256,r+=Sn(e);return r},wr=e=>{const t=Tr(e);if(null===t)return null;if(e.remainingLength<t)return null;return vr(e,t)},Ir=e=>{if(e.remainingLength<1)return null;if(255===Sn(e))return;e.skip(-1);const t=Sr(e);return null===t?null:72057594037927940!==t?t:void 0},Pr=e=>{p(e.remainingLength>=2);const t=wr(e);if(null===t)return null;const r=Ir(e);return null===r?null:{id:t,size:r}},xr=(e,t)=>{const r=Tn(e,t);let i=0;for(;i<t&&0!==r[i];)i+=1;return String.fromCharCode(...r.subarray(0,i))},Cr=(e,t)=>{const r=Tn(e,t);let i=0;for(;i<t&&0!==r[i];)i+=1;return w.decode(r.subarray(0,i))},_r=(e,t)=>{if(0===t)return 0;if(4!==t&&8!==t)throw new Error("Bad float size "+t);return 4===t?Rn(e):Mn(e)},Br=(e,t,r,i)=>u(null,null,function*(){const n=new Set(r);let s=t;for(;null===i||s<i;){let t=e.requestSliceRange(s,2,yr);if(t instanceof Promise&&(t=yield t),!t)break;const r=Pr(t);if(!r)break;if(n.has(r.id))return{pos:s,found:!0};Vr(r.size),s=t.filePos+r.size}return{pos:null!==i&&i>s?i:s,found:!1}}),Er=(e,t,r,i)=>u(null,null,function*(){const n=o(2,16),s=new Set(r);let a=t;for(;a<i;){let t=e.requestSliceRange(a,0,Math.min(n,i-a));if(t instanceof Promise&&(t=yield t),!t)break;if(t.length<8)break;for(let e=0;e<t.length-8;e++){t.filePos=a;const e=wr(t);if(null!==e&&s.has(e))return a;a++}}return null}),Fr="V_MPEG4/ISO/AVC",Dr="V_MPEGH/ISO/HEVC",Ar="V_VP8",Rr="V_VP9",Mr="V_AV1",Nr="A_AAC",zr="A_MPEG/L3",Or="A_OPUS",Lr="A_VORBIS",Ur="A_FLAC";function Vr(e){if(void 0===e)throw new Error("Undefined element size is used in a place where it is not supported.")}var qr,Hr,Wr,jr,Kr,$r;(Hr=qr||(qr={}))[Hr.None=0]="None",Hr[Hr.Xiph=1]="Xiph",Hr[Hr.FixedSize=2]="FixedSize",Hr[Hr.Ebml=3]="Ebml",(jr=Wr||(Wr={}))[jr.Block=1]="Block",jr[jr.Private=2]="Private",jr[jr.Next=4]="Next",($r=Kr||(Kr={}))[$r.Zlib=0]="Zlib",$r[$r.Bzlib=1]="Bzlib",$r[$r.lzo1x=2]="lzo1x",$r[$r.HeaderStripping=3]="HeaderStripping";const Qr=[{id:fr.SeekHead,flag:"seekHeadSeen"},{id:fr.Info,flag:"infoSeen"},{id:fr.Tracks,flag:"tracksSeen"},{id:fr.Cues,flag:"cuesSeen"}],Gr=10*o(2,20);class Xr extends ot{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}computeDuration(){return u(this,null,function*(){const e=yield this.getTracks(),t=yield Promise.all(e.map(e=>e.computeDuration()));return Math.max(0,...t)})}getTracks(){return u(this,null,function*(){return yield this.readMetadata(),this.segments.flatMap(e=>e.tracks.map(e=>e.inputTrack))})}getMimeType(){return u(this,null,function*(){yield this.readMetadata();const e=yield this.getTracks(),t=yield Promise.all(e.map(e=>e.getCodecParameterString()));return(e=>{let t=(e.hasVideo?"video/":e.hasAudio?"audio/":"application/")+(e.isWebM?"webm":"x-matroska");e.codecStrings.length>0&&(t+=`; codecs="${[...new Set(e.codecStrings.filter(Boolean))].join(", ")}"`);return t})({isWebM:this.isWebM,hasVideo:this.segments.some(e=>e.tracks.some(e=>{var t;return"video"===(null==(t=e.info)?void 0:t.type)})),hasAudio:this.segments.some(e=>e.tracks.some(e=>{var t;return"audio"===(null==(t=e.info)?void 0:t.type)})),codecStrings:t.filter(Boolean)})})}getMetadataTags(){return u(this,null,function*(){yield this.readMetadata();for(const t of this.segments)t.metadataTagsCollected||(null!==this.reader.fileSize&&(yield this.loadSegmentMetadata(t)),t.metadataTagsCollected=!0);let e={};for(const t of this.segments)e=c(c({},e),t.metadataTags);return e})}readMetadata(){var e;return null!=(e=this.readMetadataPromise)?e:this.readMetadataPromise=(()=>u(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,2,yr);if(t instanceof Promise&&(t=yield t),!t)break;const r=Pr(t);if(!r)break;const i=r.id;let n=r.size;const s=t.filePos;if(i===fr.EBML){Vr(n);let e=this.reader.requestSlice(s,n);if(e instanceof Promise&&(e=yield e),!e)break;this.readContiguousElements(e)}else if(i===fr.Segment){if(yield this.readSegment(s,n),void 0===n)break;if(null===this.reader.fileSize)break}else if(i===fr.Cluster){if(null===this.reader.fileSize)break;if(void 0===n){n=(yield Br(this.reader,s,br,this.reader.fileSize)).pos-s}const e=k(this.segments);e&&(e.elementEndPos=s+n)}Vr(n),e=s+n}}))()}readSegment(e,t){return u(this,null,function*(){var r;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,yr);if(e instanceof Promise&&(e=yield e),!e)break;const t=i,n=Pr(e);if(!n||!kr.includes(n.id)&&n.id!==fr.Void){const e=yield Er(this.reader,t,kr,Math.min(null!=(r=this.currentSegment.elementEndPos)?r:1/0,t+Gr));if(e){i=e;continue}break}const{id:s,size:a}=n,o=e.filePos,l=Qr.findIndex(e=>e.id===s);if(-1!==l){const e=Qr[l].flag;this.currentSegment[e]=!0,Vr(a);let t=this.reader.requestSlice(o,a);t instanceof Promise&&(t=yield t),t&&this.readContiguousElements(t)}else if(s===fr.Tags||s===fr.Attachments){s===fr.Tags?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,Vr(a);let e=this.reader.requestSlice(o,a);e instanceof Promise&&(e=yield e),e&&this.readContiguousElements(e)}else if(s===fr.Cluster){this.currentSegment.clusterSeekStartPos=t;break}if(void 0===a)break;i=o+a}if(this.currentSegment.seekEntries.sort((e,t)=>e.segmentPosition-t.segmentPosition),null!==this.reader.fileSize)for(const t of this.currentSegment.seekEntries){const r=Qr.find(e=>e.id===t.id);if(!r)continue;if(this.currentSegment[r.flag])continue;let i=this.reader.requestSliceRange(e+t.segmentPosition,2,yr);if(i instanceof Promise&&(i=yield i),!i)continue;const n=Pr(i);if(!n)continue;const{id:s,size:a}=n;if(s!==r.id)continue;Vr(a),this.currentSegment[r.flag]=!0;let o=this.reader.requestSlice(i.filePos,a);o instanceof Promise&&(o=yield o),o&&this.readContiguousElements(o)}-1===this.currentSegment.timestampScale&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e3);for(const e of this.currentSegment.tracks)null!==e.defaultDurationNs&&(e.defaultDuration=this.currentSegment.timestampFactor*e.defaultDurationNs/1e9);this.currentSegment.tracks.sort((e,t)=>Number(t.disposition.default)-Number(e.disposition.default));const n=new Map(this.currentSegment.tracks.map(e=>[e.id,e]));for(const e of this.currentSegment.cuePoints){const t=n.get(e.trackId);t&&t.cuePoints.push(e)}for(const e of this.currentSegment.tracks){e.cuePoints.sort((e,t)=>e.time-t.time);for(let t=0;t<e.cuePoints.length-1;t++){const r=e.cuePoints[t],i=e.cuePoints[t+1];r.time===i.time&&(e.cuePoints.splice(t+1,1),t--)}}let s=null,a=-1/0;for(const e of this.currentSegment.tracks)e.cuePoints.length>a&&(a=e.cuePoints.length,s=e);for(const e of this.currentSegment.tracks)0===e.cuePoints.length&&(e.cuePoints=s.cuePoints);this.currentSegment=null})}readCluster(e,t){return u(this,null,function*(){var r;if((null==(r=t.lastReadCluster)?void 0:r.elementStartPos)===e)return t.lastReadCluster;let i=this.reader.requestSliceRange(e,2,yr);i instanceof Promise&&(i=yield i),p(i);const n=e,s=Pr(i);p(s);p(s.id===fr.Cluster);let a=s.size;const o=i.filePos;if(void 0===a){a=(yield Br(this.reader,o,br,t.elementEndPos)).pos-o}let l=this.reader.requestSlice(o,a);l instanceof Promise&&(l=yield l);const c={segment:t,elementStartPos:n,elementEndPos:o+a,dataStartPos:o,timestamp:-1,trackData:new Map};if(this.currentCluster=c,l){const e=this.readContiguousElements(l,br);c.elementEndPos=e}for(const[,e]of c.trackData){const t=e.track;p(e.blocks.length>0);let r=!1;for(let n=0;n<e.blocks.length;n++){const t=e.blocks[n];t.timestamp+=c.timestamp,r||(r=t.lacing!==qr.None)}e.presentationTimestamps=e.blocks.map((e,t)=>({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp);for(let n=0;n<e.presentationTimestamps.length;n++){const r=e.presentationTimestamps[n],i=e.blocks[r.blockIndex];if(null===e.firstKeyFrameTimestamp&&i.isKeyFrame&&(e.firstKeyFrameTimestamp=i.timestamp),n<e.presentationTimestamps.length-1){const t=e.presentationTimestamps[n+1];i.duration=t.timestamp-i.timestamp}else 0===i.duration&&null!=t.defaultDuration&&i.lacing===qr.None&&(i.duration=t.defaultDuration)}r&&(this.expandLacedBlocks(e.blocks,t),e.presentationTimestamps=e.blocks.map((e,t)=>({timestamp:e.timestamp,blockIndex:t})).sort((e,t)=>e.timestamp-t.timestamp));const i=e.blocks[e.presentationTimestamps[0].blockIndex],s=e.blocks[k(e.presentationTimestamps).blockIndex];e.startTimestamp=i.timestamp,e.endTimestamp=s.timestamp+s.duration;const a=N(t.clusterPositionCache,e.startTimestamp,e=>e.startTimestamp);-1!==a&&t.clusterPositionCache[a].elementStartPos===n||t.clusterPositionCache.splice(a+1,0,{elementStartPos:c.elementStartPos,startTimestamp:e.startTimestamp})}return t.lastReadCluster=c,c})}getTrackDataInCluster(e,t){let r=e.trackData.get(t);if(!r){const i=e.segment.tracks.find(e=>e.id===t);if(!i)return null;r={track:i,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(t,r)}return r}expandLacedBlocks(e,t){var r;for(let i=0;i<e.length;i++){const n=e[i];if(n.lacing===qr.None)continue;n.decoded||(n.data=this.decodeBlockData(t,n.data),n.decoded=!0);const s=bn.tempFromBytes(n.data),a=[],o=Sn(s)+1;switch(n.lacing){case qr.Xiph:{let e=0;for(let t=0;t<o-1;t++){let t=0;for(;s.bufferPos<s.length;){const r=Sn(s);if(t+=r,r<255){a.push(t),e+=t;break}}}a.push(s.length-(s.bufferPos+e))}break;case qr.FixedSize:{const e=s.length-1,t=Math.floor(e/o);for(let r=0;r<o;r++)a.push(t)}break;case qr.Ebml:{const e=Sr(s);p(null!==e);let t=e;a.push(t);let r=t;for(let i=1;i<o-1;i++){const e=s.bufferPos,i=Sr(s);p(null!==i);t+=i-((1<<7*(s.bufferPos-e)-1)-1),a.push(t),r+=t}a.push(s.length-(s.bufferPos+r))}break;default:p(!1)}p(a.length===o),e.splice(i,1);const l=n.duration||o*(null!=(r=t.defaultDuration)?r:0);for(let t=0;t<o;t++){const r=a[t],c=Tn(s,r),u=n.timestamp+l*t/o,d=l/o;e.splice(i+t,0,{timestamp:u,duration:d,isKeyFrame:n.isKeyFrame,data:c,lacing:qr.None,decoded:!0,mainAdditional:n.mainAdditional})}i+=o,i--}}loadSegmentMetadata(e){return u(this,null,function*(){for(const t of e.seekEntries){if(t.id!==fr.Tags||e.tagsSeen){if(t.id!==fr.Attachments||e.attachmentsSeen)continue}else;let r=this.reader.requestSliceRange(e.dataStartPos+t.segmentPosition,2,yr);if(r instanceof Promise&&(r=yield r),!r)continue;const i=Pr(r);if(!i||i.id!==t.id)continue;const{size:n}=i;Vr(n),p(!this.currentSegment),this.currentSegment=e;let s=this.reader.requestSlice(r.filePos,n);s instanceof Promise&&(s=yield s),s&&this.readContiguousElements(s),this.currentSegment=null,t.id===fr.Tags?e.tagsSeen=!0:t.id===fr.Attachments&&(e.attachmentsSeen=!0)}})}readContiguousElements(e,t){for(;e.remainingLength>=2;){const r=e.filePos;if(!this.traverseElement(e,t))return r}return e.filePos}traverseElement(e,t){var r,i,n,s,a,o,l,u,d,h,m,f,k,b,y,T,S,v,w,I,P,C,B,F,D,A,R,M,N,z,O,L,U,V,q,H,W,j,K,Q,G,Y,J,Z,ee,te,re,ie;const ne=Pr(e);if(!ne)return!1;if(t&&t.includes(ne.id))return!1;const{id:se,size:ae}=ne,oe=e.filePos;switch(Vr(ae),se){case fr.DocType:this.isWebM="webm"===xr(e,ae);break;case fr.Seek:{if(!this.currentSegment)break;const t={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(t),this.readContiguousElements(e.slice(oe,ae)),-1!==t.id&&-1!==t.segmentPosition||this.currentSegment.seekEntries.pop()}break;case fr.SeekID:{const t=null==(r=this.currentSegment)?void 0:r.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.id=vr(e,ae)}break;case fr.SeekPosition:{const t=null==(i=this.currentSegment)?void 0:i.seekEntries[this.currentSegment.seekEntries.length-1];if(!t)break;t.segmentPosition=vr(e,ae)}break;case fr.TimestampScale:if(!this.currentSegment)break;this.currentSegment.timestampScale=vr(e,ae),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale;break;case fr.Duration:if(!this.currentSegment)break;this.currentSegment.duration=_r(e,ae);break;case fr.TrackEntry:if(!this.currentSegment)break;if(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:c({},ge),inputTrack:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:$,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(oe,ae)),!this.currentTrack)break;if(this.currentTrack.decodingInstructions.some(e=>{var t;return"decompress"!==(null==(t=e.data)?void 0:t.type)||e.scope!==Wr.Block||e.data.algorithm!==Kr.HeaderStripping})&&(console.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){this.currentTrack.codecId===Fr?(this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Dr?(this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Ar?this.currentTrack.info.codec="vp8":t===Rr?this.currentTrack.info.codec="vp9":t===Mr&&(this.currentTrack.info.codec="av1");const e=this.currentTrack,r=new Gt(this.input,new Jr(e));this.currentTrack.inputTrack=r,this.currentSegment.tracks.push(this.currentTrack)}else if("audio"===this.currentTrack.info.type&&-1!==this.currentTrack.info.numberOfChannels&&-1!==this.currentTrack.info.sampleRate){t===Nr?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2")},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===zr?this.currentTrack.info.codec="mp3":t===Or?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=xe):t===Lr?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):t===Ur?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):"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,r=new Xt(this.input,new Zr(e));this.currentTrack.inputTrack=r,this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null;break;case fr.TrackNumber:if(!this.currentTrack)break;this.currentTrack.id=vr(e,ae);break;case fr.TrackType:{if(!this.currentTrack)break;const t=vr(e,ae);1===t?this.currentTrack.info={type:"video",width:-1,height:-1,rotation:0,codec:null,codecDescription:null,colorSpace:null,alphaMode:!1}:2===t&&(this.currentTrack.info={type:"audio",numberOfChannels:-1,sampleRate:-1,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null})}break;case fr.FlagEnabled:if(!this.currentTrack)break;vr(e,ae)||(this.currentTrack=null);break;case fr.FlagDefault:if(!this.currentTrack)break;this.currentTrack.disposition.default=!!vr(e,ae);break;case fr.FlagForced:if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!vr(e,ae);break;case fr.FlagOriginal:if(!this.currentTrack)break;this.currentTrack.disposition.original=!!vr(e,ae);break;case fr.FlagHearingImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!vr(e,ae);break;case fr.FlagVisualImpaired:if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!vr(e,ae);break;case fr.FlagCommentary:if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!vr(e,ae);break;case fr.CodecID:if(!this.currentTrack)break;this.currentTrack.codecId=xr(e,ae);break;case fr.CodecPrivate:if(!this.currentTrack)break;this.currentTrack.codecPrivate=Tn(e,ae);break;case fr.DefaultDuration:if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=vr(e,ae);break;case fr.Name:if(!this.currentTrack)break;this.currentTrack.name=Cr(e,ae);break;case fr.Language:if(!this.currentTrack)break;if(this.currentTrack.languageCode!==$)break;this.currentTrack.languageCode=xr(e,ae),X(this.currentTrack.languageCode)||(this.currentTrack.languageCode=$);break;case fr.LanguageBCP47:{if(!this.currentTrack)break;const t=xr(e,ae).split("-")[0];this.currentTrack.languageCode=t||$}break;case fr.Video:if("video"!==(null==(s=null==(n=this.currentTrack)?void 0:n.info)?void 0:s.type))break;this.readContiguousElements(e.slice(oe,ae));break;case fr.PixelWidth:if("video"!==(null==(o=null==(a=this.currentTrack)?void 0:a.info)?void 0:o.type))break;this.currentTrack.info.width=vr(e,ae);break;case fr.PixelHeight:if("video"!==(null==(u=null==(l=this.currentTrack)?void 0:l.info)?void 0:u.type))break;this.currentTrack.info.height=vr(e,ae);break;case fr.AlphaMode:if("video"!==(null==(h=null==(d=this.currentTrack)?void 0:d.info)?void 0:h.type))break;this.currentTrack.info.alphaMode=1===vr(e,ae);break;case fr.Colour:if("video"!==(null==(f=null==(m=this.currentTrack)?void 0:m.info)?void 0:f.type))break;this.currentTrack.info.colorSpace={},this.readContiguousElements(e.slice(oe,ae));break;case fr.MatrixCoefficients:{if("video"!==(null==(b=null==(k=this.currentTrack)?void 0:k.info)?void 0:b.type)||!this.currentTrack.info.colorSpace)break;const t=vr(e,ae),r=null!=(y=E[t])?y:null;this.currentTrack.info.colorSpace.matrix=r}break;case fr.Range:if("video"!==(null==(S=null==(T=this.currentTrack)?void 0:T.info)?void 0:S.type)||!this.currentTrack.info.colorSpace)break;this.currentTrack.info.colorSpace.fullRange=2===vr(e,ae);break;case fr.TransferCharacteristics:{if("video"!==(null==(w=null==(v=this.currentTrack)?void 0:v.info)?void 0:w.type)||!this.currentTrack.info.colorSpace)break;const t=vr(e,ae),r=null!=(I=_[t])?I:null;this.currentTrack.info.colorSpace.transfer=r}break;case fr.Primaries:{if("video"!==(null==(C=null==(P=this.currentTrack)?void 0:P.info)?void 0:C.type)||!this.currentTrack.info.colorSpace)break;const t=vr(e,ae),r=null!=(B=x[t])?B:null;this.currentTrack.info.colorSpace.primaries=r}break;case fr.Projection:if("video"!==(null==(D=null==(F=this.currentTrack)?void 0:F.info)?void 0:D.type))break;this.readContiguousElements(e.slice(oe,ae));break;case fr.ProjectionPoseRoll:{if("video"!==(null==(R=null==(A=this.currentTrack)?void 0:A.info)?void 0:R.type))break;const t=-_r(e,ae);try{this.currentTrack.info.rotation=g(t)}catch(le){}}break;case fr.Audio:if("audio"!==(null==(N=null==(M=this.currentTrack)?void 0:M.info)?void 0:N.type))break;this.readContiguousElements(e.slice(oe,ae));break;case fr.SamplingFrequency:if("audio"!==(null==(O=null==(z=this.currentTrack)?void 0:z.info)?void 0:O.type))break;this.currentTrack.info.sampleRate=_r(e,ae);break;case fr.Channels:if("audio"!==(null==(U=null==(L=this.currentTrack)?void 0:L.info)?void 0:U.type))break;this.currentTrack.info.numberOfChannels=vr(e,ae);break;case fr.BitDepth:if("audio"!==(null==(q=null==(V=this.currentTrack)?void 0:V.info)?void 0:q.type))break;this.currentTrack.info.bitDepth=vr(e,ae);break;case fr.CuePoint:if(!this.currentSegment)break;this.readContiguousElements(e.slice(oe,ae)),this.currentCueTime=null;break;case fr.CueTime:this.currentCueTime=vr(e,ae);break;case fr.CueTrackPositions:{if(null===this.currentCueTime)break;p(this.currentSegment);const t={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(t),this.readContiguousElements(e.slice(oe,ae)),-1!==t.trackId&&-1!==t.clusterPosition||this.currentSegment.cuePoints.pop()}break;case fr.CueTrack:{const t=null==(H=this.currentSegment)?void 0:H.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;t.trackId=vr(e,ae)}break;case fr.CueClusterPosition:{const t=null==(W=this.currentSegment)?void 0:W.cuePoints[this.currentSegment.cuePoints.length-1];if(!t)break;p(this.currentSegment),t.clusterPosition=this.currentSegment.dataStartPos+vr(e,ae)}break;case fr.Timestamp:if(!this.currentCluster)break;this.currentCluster.timestamp=vr(e,ae);break;case fr.SimpleBlock:{if(!this.currentCluster)break;const t=Sr(e);if(null===t)break;const r=this.getTrackDataInCluster(this.currentCluster,t);if(!r)break;const i=Pn(e),n=Sn(e),s=n>>1&3;let a=!!(128&n);"audio"===(null==(j=r.track.info)?void 0:j.type)&&r.track.info.codec&&(a=!0);const o=Tn(e,ae-(e.filePos-oe)),l=r.track.decodingInstructions.length>0;r.blocks.push({timestamp:i,duration:0,isKeyFrame:a,data:o,lacing:s,decoded:!l,mainAdditional:null})}break;case fr.BlockGroup:if(!this.currentCluster)break;this.readContiguousElements(e.slice(oe,ae)),this.currentBlock=null;break;case fr.Block:{if(!this.currentCluster)break;const t=Sr(e);if(null===t)break;const r=this.getTrackDataInCluster(this.currentCluster,t);if(!r)break;const i=Pn(e),n=Sn(e)>>1&3,s=Tn(e,ae-(e.filePos-oe)),a=r.track.decodingInstructions.length>0;this.currentBlock={timestamp:i,duration:0,isKeyFrame:!0,data:s,lacing:n,decoded:!a,mainAdditional:null},r.blocks.push(this.currentBlock)}break;case fr.BlockAdditions:this.readContiguousElements(e.slice(oe,ae));break;case fr.BlockMore:if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(oe,ae)),this.currentBlockAdditional.data&&1===this.currentBlockAdditional.addId&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null;break;case fr.BlockAdditional:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=Tn(e,ae);break;case fr.BlockAddID:if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=vr(e,ae);break;case fr.BlockDuration:if(!this.currentBlock)break;this.currentBlock.duration=vr(e,ae);break;case fr.ReferenceBlock:if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1;break;case fr.Tag:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(oe,ae));break;case fr.Targets:this.readContiguousElements(e.slice(oe,ae));break;case fr.TargetTypeValue:50!==vr(e,ae)&&(this.currentTagTargetIsMovie=!1);break;case fr.TagTrackUID:case fr.TagEditionUID:case fr.TagChapterUID:case fr.TagAttachmentUID:this.currentTagTargetIsMovie=!1;break;case fr.SimpleTag:if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(oe,ae));break;case fr.TagName:this.currentSimpleTagName=Cr(e,ae);break;case fr.TagString:{if(!this.currentSimpleTagName)break;const t=Cr(e,ae);this.processTagValue(this.currentSimpleTagName,t)}break;case fr.TagBinary:{if(!this.currentSimpleTagName)break;const t=Tn(e,ae);this.processTagValue(this.currentSimpleTagName,t)}break;case fr.AttachedFile:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(oe,ae));const t=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(null!=t.raw||(t.raw={}),t.raw[this.currentAttachedFile.fileUid.toString()]=new pe(this.currentAttachedFile.fileData,null!=(K=this.currentAttachedFile.fileMediaType)?K:void 0,null!=(Q=this.currentAttachedFile.fileName)?Q:void 0,null!=(G=this.currentAttachedFile.fileDescription)?G:void 0)),(null==(Y=this.currentAttachedFile.fileMediaType)?void 0:Y.startsWith("image/"))&&this.currentAttachedFile.fileData){const e=this.currentAttachedFile.fileName;let r="unknown";if(e){const t=e.toLowerCase();t.startsWith("cover.")?r="coverFront":t.startsWith("back.")&&(r="coverBack")}null!=t.images||(t.images=[]),t.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:r,name:null!=(J=this.currentAttachedFile.fileName)?J:void 0,description:null!=(Z=this.currentAttachedFile.fileDescription)?Z:void 0})}this.currentAttachedFile=null}break;case fr.FileUID:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=((e,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let r=BigInt("0");for(let i=0;i<t;i++)r<<=BigInt("8"),r+=BigInt(Sn(e));return r})(e,ae);break;case fr.FileName:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileName=Cr(e,ae);break;case fr.FileMediaType:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileMediaType=xr(e,ae);break;case fr.FileData:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileData=Tn(e,ae);break;case fr.FileDescription:if(!this.currentAttachedFile)break;this.currentAttachedFile.fileDescription=Cr(e,ae);break;case fr.ContentEncodings:if(!this.currentTrack)break;this.readContiguousElements(e.slice(oe,ae)),this.currentTrack.decodingInstructions.sort((e,t)=>t.order-e.order);break;case fr.ContentEncoding:this.currentDecodingInstruction={order:0,scope:Wr.Block,data:null},this.readContiguousElements(e.slice(oe,ae)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case fr.ContentEncodingOrder:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=vr(e,ae);break;case fr.ContentEncodingScope:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=vr(e,ae);break;case fr.ContentCompression:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:Kr.Zlib,settings:null},this.readContiguousElements(e.slice(oe,ae));break;case fr.ContentCompAlgo:if("decompress"!==(null==(te=null==(ee=this.currentDecodingInstruction)?void 0:ee.data)?void 0:te.type))break;this.currentDecodingInstruction.data.algorithm=vr(e,ae);break;case fr.ContentCompSettings:if("decompress"!==(null==(ie=null==(re=this.currentDecodingInstruction)?void 0:re.data)?void 0:ie.type))break;this.currentDecodingInstruction.data.settings=Tn(e,ae);break;case fr.ContentEncryption:if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}return e.filePos=oe+ae,!0}decodeBlockData(e,t){p(e.decodingInstructions.length>0);let r=t;for(const i of e.decodingInstructions)if(p(i.data),"decompress"===i.data.type)if(i.data.algorithm===Kr.HeaderStripping)if(i.data.settings&&i.data.settings.length>0){const e=i.data.settings,t=new Uint8Array(e.length+r.length);t.set(e,0),t.set(r,e.length),r=t}return r}processTagValue(e,t){var r,i;if(!(null==(r=this.currentSegment)?void 0:r.metadataTags))return;const n=this.currentSegment.metadataTags;if(null!=n.raw||(n.raw={}),null!=(i=n.raw)[e]||(i[e]=t),"string"===typeof t)switch(e.toLowerCase()){case"title":null!=n.title||(n.title=t);break;case"description":null!=n.description||(n.description=t);break;case"artist":null!=n.artist||(n.artist=t);break;case"album":null!=n.album||(n.album=t);break;case"album_artist":null!=n.albumArtist||(n.albumArtist=t);break;case"genre":null!=n.genre||(n.genre=t);break;case"comment":null!=n.comment||(n.comment=t);break;case"lyrics":null!=n.lyrics||(n.lyrics=t);break;case"date":{const e=new Date(t);Number.isNaN(e.getTime())||null!=n.date||(n.date=e)}break;case"track_number":case"part_number":{const e=t.split("/"),r=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(r)&&r>0&&(null!=n.trackNumber||(n.trackNumber=r)),i&&Number.isInteger(i)&&i>0&&(null!=n.tracksTotal||(n.tracksTotal=i))}break;case"disc_number":case"disc":{const e=t.split("/"),r=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(r)&&r>0&&(null!=n.discNumber||(n.discNumber=r)),i&&Number.isInteger(i)&&i>0&&(null!=n.discsTotal||(n.discsTotal=i))}}}}class Yr{constructor(e){this.internalTrack=e,this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}computeDuration(){return u(this,null,function*(){var e,t;const r=yield this.getPacket(1/0,{metadataOnly:!0});return(null!=(e=null==r?void 0:r.timestamp)?e:0)+(null!=(t=null==r?void 0:r.duration)?t:0)})}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getFirstTimestamp(){return u(this,null,function*(){var e;const t=yield this.getFirstPacket({metadataOnly:!0});return null!=(e=null==t?void 0:t.timestamp)?e:0})}getTimeResolution(){return this.internalTrack.segment.timestampFactor}getDisposition(){return this.internalTrack.disposition}getFirstPacket(e){return u(this,null,function*(){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,e)})}intoTimescale(e){return Q(e*this.internalTrack.segment.timestampFactor)}getPacket(e,t){return u(this,null,function*(){const r=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const i=N(t.presentationTimestamps,r,e=>e.timestamp);return{blockIndex:-1!==i?t.presentationTimestamps[i].blockIndex:-1,correctBlockFound:-1!==i&&r<t.endTimestamp}},r,r,t)})}getNextPacket(e,t){return u(this,null,function*(){const r=this.packetToClusterLocation.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");return this.performClusterLookup(r.cluster,e=>{if(e===r.cluster){const t=e.trackData.get(this.internalTrack.id);if(r.blockIndex+1<t.blocks.length)return{blockIndex:r.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)})}getKeyPacket(e,t){return u(this,null,function*(){const r=this.intoTimescale(e);return this.performClusterLookup(null,e=>{const t=e.trackData.get(this.internalTrack.id);if(!t)return{blockIndex:-1,correctBlockFound:!1};const i=U(t.presentationTimestamps,e=>t.blocks[e.blockIndex].isKeyFrame&&e.timestamp<=r);return{blockIndex:-1!==i?t.presentationTimestamps[i].blockIndex:-1,correctBlockFound:-1!==i&&r<t.endTimestamp}},r,r,t)})}getNextKeyPacket(e,t){return u(this,null,function*(){const r=this.packetToClusterLocation.get(e);if(void 0===r)throw new Error("Packet was not created from this track.");return this.performClusterLookup(r.cluster,e=>{if(e===r.cluster){const t=e.trackData.get(this.internalTrack.id).blocks.findIndex((e,t)=>e.isKeyFrame&&t>r.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 p(-1!==e),{blockIndex:e,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,t)})}fetchPacketInCluster(e,t,r){return u(this,null,function*(){var i;if(-1===t)return null;const n=e.trackData.get(this.internalTrack.id).blocks[t];p(n),n.decoded||(n.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,n.data),n.decoded=!0);const s=r.metadataOnly?ut:n.data,a=n.timestamp/this.internalTrack.segment.timestampFactor,o=n.duration/this.internalTrack.segment.timestampFactor,l={};n.mainAdditional&&"video"===(null==(i=this.internalTrack.info)?void 0:i.type)&&this.internalTrack.info.alphaMode&&(l.alpha=r.metadataOnly?ut:n.mainAdditional,l.alphaByteLength=n.mainAdditional.byteLength);const c=new dt(s,n.isKeyFrame?"key":"delta",a,o,e.dataStartPos+t,n.data.byteLength,l);return this.packetToClusterLocation.set(c,{cluster:e,blockIndex:t}),c})}performClusterLookup(e,t,r,i,n){return u(this,null,function*(){var s,a,o,l;const{demuxer:c,segment:u}=this.internalTrack;let d=null,h=null,m=-1;if(e){const{blockIndex:r,correctBlockFound:i}=t(e);if(i)return this.fetchPacketInCluster(e,r,n);-1!==r&&(h=e,m=r)}const f=N(this.internalTrack.cuePoints,r,e=>e.time),g=-1!==f?this.internalTrack.cuePoints[f]:null,k=N(this.internalTrack.clusterPositionCache,r,e=>e.startTimestamp),b=-1!==k?this.internalTrack.clusterPositionCache[k]:null,y=Math.max(null!=(s=null==g?void 0:g.clusterPosition)?s:0,null!=(a=null==b?void 0:b.elementStartPos)?a:0)||null;let T;for(e?null===y||e.elementStartPos>=y?(T=e.elementEndPos,d=e):T=y:T=null!=y?y:u.clusterSeekStartPos;null===u.elementEndPos||T<=u.elementEndPos-2;){if(d){const e=d.trackData.get(this.internalTrack.id);if(e&&e.startTimestamp>i)break}let e=c.reader.requestSliceRange(T,2,yr);if(e instanceof Promise&&(e=yield e),!e)break;const r=T,s=Pr(e);if(!s||!kr.includes(s.id)&&s.id!==fr.Void){const e=yield Er(c.reader,r,kr,Math.min(null!=(o=u.elementEndPos)?o:1/0,r+Gr));if(e){T=e;continue}break}const a=s.id;let l=s.size;const f=e.filePos;if(a===fr.Cluster){d=yield c.readCluster(r,u),l=d.elementEndPos-f;const{blockIndex:e,correctBlockFound:i}=t(d);if(i)return this.fetchPacketInCluster(d,e,n);-1!==e&&(h=d,m=e)}if(void 0===l){p(a!==fr.Cluster);l=(yield Br(c.reader,f,br,u.elementEndPos)).pos-f}const g=f+l;if(null===u.elementEndPos){let e=c.reader.requestSliceRange(g,2,yr);if(e instanceof Promise&&(e=yield e),!e)break;if(wr(e)===fr.Segment){u.elementEndPos=g;break}}T=g}if(g&&(!h||h.elementStartPos<g.clusterPosition)){const e=this.internalTrack.cuePoints[f-1];p(!e||e.time<g.time);const r=null!=(l=null==e?void 0:e.time)?l:-1/0;return this.performClusterLookup(null,t,r,i,n)}return h?this.fetchPacketInCluster(h,m,n):null})}}class Jr extends Yr{constructor(e){super(e),this.decoderConfigPromise=null,this.internalTrack=e}getCodec(){return this.internalTrack.info.codec}getCodedWidth(){return this.internalTrack.info.width}getCodedHeight(){return this.internalTrack.info.height}getRotation(){return this.internalTrack.info.rotation}getColorSpace(){return u(this,null,function*(){var e,t,r,i;return{primaries:null==(e=this.internalTrack.info.colorSpace)?void 0:e.primaries,transfer:null==(t=this.internalTrack.info.colorSpace)?void 0:t.transfer,matrix:null==(r=this.internalTrack.info.colorSpace)?void 0:r.matrix,fullRange:null==(i=this.internalTrack.info.colorSpace)?void 0:i.fullRange}})}canBeTransparent(){return u(this,null,function*(){return this.internalTrack.info.alphaMode})}getDecoderConfig(){return u(this,null,function*(){var e;return this.internalTrack.info.codec?null!=(e=this.decoderConfigPromise)?e:this.decoderConfigPromise=(()=>u(this,null,function*(){var e,t;let r=null;return("vp9"===this.internalTrack.info.codec||"av1"===this.internalTrack.info.codec||"avc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription||"hevc"===this.internalTrack.info.codec&&!this.internalTrack.info.codecDescription)&&(r=yield this.getFirstPacket({})),{codec:Se({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&&r?Ue(r.data):null,hevcCodecInfo:"hevc"===this.internalTrack.info.codec&&r?We(r.data):null,vp9CodecInfo:"vp9"===this.internalTrack.info.codec&&r?Je(r.data):null,av1CodecInfo:"av1"===this.internalTrack.info.codec&&r?et(r.data):null}),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0,colorSpace:null!=(t=this.internalTrack.info.colorSpace)?t:void 0}}))():null})}}class Zr extends Yr{constructor(e){super(e),this.decoderConfig=null,this.internalTrack=e}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}getDecoderConfig(){return u(this,null,function*(){var e,t;return this.internalTrack.info.codec?null!=(t=this.decoderConfig)?t:this.decoderConfig={codec:ve({codec:this.internalTrack.info.codec,codecDescription:this.internalTrack.info.codecDescription,aacCodecInfo:this.internalTrack.info.aacCodecInfo}),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:null!=(e=this.internalTrack.info.codecDescription)?e:void 0}:null})}}const ei=[44100,48e3,32e3],ti=[-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],ri=(e,t)=>{const r=e>>>24,i=e>>>16&255,n=e>>>8&255,s=255&e;if(255!==r&&255!==i&&255!==n&&255!==s)return{header:null,bytesAdvanced:4};if(255!==r)return{header:null,bytesAdvanced:1};if(224!==(224&i))return{header:null,bytesAdvanced:1};let a=0,o=0;16&i?a=8&i?0:1:(a=1,o=1);const l=i>>3&3,c=i>>1&3,u=(n>>2&3)%3,d=s>>6&3,h=s>>4&3,m=s>>3&1,f=s>>2&1,p=3&s,g=ti[16*a*4+16*c+(n>>4&15)];if(-1===g)return{header:null,bytesAdvanced:1};const k=1e3*g,b=ei[u]>>a+o,y=((e,t,r,i,n)=>0===t?0:1===t?Math.floor(144*r/(i<<e))+n:2===t?Math.floor(144*r/i)+n:4*(Math.floor(12*r/i)+n))(a,c,k,b,n>>1&1);if(null!==t&&t<y)return{header:null,bytesAdvanced:1};let T;return T=3===l?3===c?384:1152:3===c?384:2===c?1152:576,{header:{totalSize:y,mpegVersionId:l,layer:c,bitrate:k,frequencyIndex:u,sampleRate:b,channel:d,modeExtension:h,copyright:m,original:f,emphasis:p,audioSamplesInFrame:T},bytesAdvanced:1}},ii=e=>{let t=2130706432,r=0;for(;0!==t;)r>>=1,r|=e&t,t>>=8;return r};var ni,si,ai,oi;(si=ni||(ni={}))[si.Unsynchronisation=128]="Unsynchronisation",si[si.ExtendedHeader=64]="ExtendedHeader",si[si.ExperimentalIndicator=32]="ExperimentalIndicator",si[si.Footer=16]="Footer",(oi=ai||(ai={}))[oi.ISO_8859_1=0]="ISO_8859_1",oi[oi.UTF_16_WITH_BOM=1]="UTF_16_WITH_BOM",oi[oi.UTF_16_BE_NO_BOM=2]="UTF_16_BE_NO_BOM",oi[oi.UTF_8=3]="UTF_8";const li=128,ci=["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"],ui=(e,t)=>{const r=Tn(e,t),i=ce(r.indexOf(0),r.length),n=r.subarray(0,i);let s="";for(let a=0;a<n.length;a++)s+=String.fromCharCode(n[a]);return s.trimEnd()},di=e=>{const t=e.filePos,r=Nn(e,3),i=Sn(e),n=Sn(e),s=Sn(e),a=Cn(e);if("ID3"!==r||255===i||255===n||0!==(2155905152&a))return e.filePos=t,null;return{majorVersion:i,revision:n,flags:s,size:ii(a)}},hi=(e,t,r)=>{var i,n,s,a;if(![2,3,4].includes(t.majorVersion))return void console.warn(`Unsupported ID3v2 major version: ${t.majorVersion}`);const o=Tn(e,t.size),l=new mi(t,o);if(t.flags&ni.Footer&&l.removeFooter(),t.flags&ni.Unsynchronisation&&3===t.majorVersion&&l.ununsynchronizeAll(),t.flags&ni.ExtendedHeader){const e=l.readU32();3===t.majorVersion?l.pos+=e:l.pos+=e-4}for(;l.pos<=l.bytes.length-l.frameHeaderSize();){const e=l.readId3V2Frame();if(!e)break;const o=l.pos,c=l.pos+e.size;let u=!1,d=!1,h=!1;if(3===t.majorVersion?(u=!!(64&e.flags),d=!!(128&e.flags)):4===t.majorVersion&&(u=!!(4&e.flags),d=!!(8&e.flags),h=!!(2&e.flags)||!!(t.flags&ni.Unsynchronisation)),u)console.warn(`Skipping encrypted ID3v2 frame ${e.id}`),l.pos=c;else if(d)console.warn(`Skipping compressed ID3v2 frame ${e.id}`),l.pos=c;else{switch(h&&l.ununsynchronizeRegion(l.pos,c),null!=r.raw||(r.raw={}),"T"===e.id[0]?null!=(i=r.raw)[n=e.id]||(i[n]=l.readId3V2EncodingAndText(c)):null!=(s=r.raw)[a=e.id]||(s[a]=l.readBytes(e.size)),l.pos=o,e.id){case"TIT2":case"TT2":null!=r.title||(r.title=l.readId3V2EncodingAndText(c));break;case"TIT3":case"TT3":null!=r.description||(r.description=l.readId3V2EncodingAndText(c));break;case"TPE1":case"TP1":null!=r.artist||(r.artist=l.readId3V2EncodingAndText(c));break;case"TALB":case"TAL":null!=r.album||(r.album=l.readId3V2EncodingAndText(c));break;case"TPE2":case"TP2":null!=r.albumArtist||(r.albumArtist=l.readId3V2EncodingAndText(c));break;case"TRCK":case"TRK":{const e=l.readId3V2EncodingAndText(c).split("/"),t=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(null!=r.trackNumber||(r.trackNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=r.tracksTotal||(r.tracksTotal=i))}break;case"TPOS":case"TPA":{const e=l.readId3V2EncodingAndText(c).split("/"),t=Number.parseInt(e[0],10),i=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(null!=r.discNumber||(r.discNumber=t)),i&&Number.isInteger(i)&&i>0&&(null!=r.discsTotal||(r.discsTotal=i))}break;case"TCON":case"TCO":{const e=l.readId3V2EncodingAndText(c);let t=/^\((\d+)\)/.exec(e);if(t){const e=Number.parseInt(t[1]);if(void 0!==ci[e]){null!=r.genre||(r.genre=ci[e]);break}}if(t=/^\d+$/.exec(e),t){const e=Number.parseInt(t[0]);if(void 0!==ci[e]){null!=r.genre||(r.genre=ci[e]);break}}null!=r.genre||(r.genre=e)}break;case"TDRC":case"TDAT":{const e=l.readId3V2EncodingAndText(c),t=new Date(e);Number.isNaN(t.getTime())||null!=r.date||(r.date=t)}break;case"TYER":case"TYE":{const e=l.readId3V2EncodingAndText(c),t=Number.parseInt(e,10);Number.isInteger(t)&&(null!=r.date||(r.date=new Date(t,0,1)))}break;case"USLT":case"ULT":{const e=l.readU8();l.pos+=3,l.readId3V2Text(e,c),null!=r.lyrics||(r.lyrics=l.readId3V2Text(e,c))}break;case"COMM":case"COM":{const e=l.readU8();l.pos+=3,l.readId3V2Text(e,c),null!=r.comment||(r.comment=l.readId3V2Text(e,c))}break;case"APIC":case"PIC":{const e=l.readId3V2TextEncoding();let i;if(2===t.majorVersion){const e=l.readAscii(3);i="PNG"===e?"image/png":"JPG"===e?"image/jpeg":"image/*"}else i=l.readId3V2Text(e,c);const n=l.readU8(),s=l.readId3V2Text(e,c).trimEnd(),a=c-l.pos;if(a>=0){const e=l.readBytes(a);r.images||(r.images=[]),r.images.push({data:e,mimeType:i,kind:3===n?"coverFront":4===n?"coverBack":"unknown",description:s})}}break;default:l.pos+=e.size}l.pos=c}}};class mi{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 r=this.bytes[t];if(e.push(r),255===r&&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 r=[];for(let s=e;s<t;s++){const e=this.bytes[s];if(r.push(e),255===e&&s!==t-1){0===this.bytes[s+1]&&s++}}const i=this.bytes.subarray(0,e),n=this.bytes.subarray(t);this.bytes=new Uint8Array(i.length+r.length+n.length),this.bytes.set(i,0),this.bytes.set(r,i.length),this.bytes.set(n,i.length+r.length),this.view=new DataView(this.bytes.buffer)}removeFooter(){this.bytes=this.bytes.subarray(0,this.bytes.length-10),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+1);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 r=0;r<e;r++)t+=String.fromCharCode(this.view.getUint8(this.pos+r));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 r=4===this.header.majorVersion?ii(t):t;const i=this.readU16(),n=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(r)){const e=4===this.header.majorVersion?t:ii(t);s(e)&&(r=e)}return this.pos=n,{id:e,size:r,flags:i}}}readId3V2TextEncoding(){const e=this.readU8();if(e>3)throw new Error(`Unsupported text encoding: ${e}`);return e}readId3V2Text(e,t){const r=this.pos,i=this.readBytes(t-this.pos);switch(e){case ai.ISO_8859_1:{let e="";for(let t=0;t<i.length;t++){const n=i[t];if(0===n){this.pos=r+t+1;break}e+=String.fromCharCode(n)}return e}case ai.UTF_16_WITH_BOM:if(255===i[0]&&254===i[1]){const e=new TextDecoder("utf-16le"),t=ce(i.findIndex((e,t)=>0===e&&0===i[t+1]&&t%2===0),i.length);return this.pos=r+Math.min(t+2,i.length),e.decode(i.subarray(2,t))}if(254===i[0]&&255===i[1]){const e=new TextDecoder("utf-16be"),t=ce(i.findIndex((e,t)=>0===e&&0===i[t+1]&&t%2===0),i.length);return this.pos=r+Math.min(t+2,i.length),e.decode(i.subarray(2,t))}{const e=ce(i.findIndex(e=>0===e),i.length);return this.pos=r+Math.min(e+1,i.length),w.decode(i.subarray(0,e))}case ai.UTF_16_BE_NO_BOM:{const e=new TextDecoder("utf-16be"),t=ce(i.findIndex((e,t)=>0===e&&0===i[t+1]&&t%2===0),i.length);return this.pos=r+Math.min(t+2,i.length),e.decode(i.subarray(0,t))}case ai.UTF_8:{const e=ce(i.findIndex(e=>0===e),i.length);return this.pos=r+Math.min(e+1,i.length),w.decode(i.subarray(0,e))}}}readId3V2EncodingAndText(e){if(this.pos>=e)return"";const t=this.readId3V2TextEncoding();return this.readId3V2Text(t,e)}}const fi=(e,t,r)=>u(null,null,function*(){let i=t;for(;null===r||i<r;){let t=e.requestSlice(i,4);if(t instanceof Promise&&(t=yield t),!t)break;const r=Cn(t),n=ri(r,null!==e.fileSize?e.fileSize-i:null);if(n.header)return{header:n.header,startPos:i};i+=n.bytesAdvanced}return null});class pi extends ot{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.metadataTags=null,this.tracks=[],this.readingMutex=new D,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return u(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>u(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();if(!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.tracks=[new Xt(this.input,new gi(this))]}))()})}advanceReader(){return u(this,null,function*(){if(0===this.lastLoadedPos)for(;;){let e=this.reader.requestSlice(this.lastLoadedPos,10);if(e instanceof Promise&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=di(e);if(!t)break;this.lastLoadedPos=e.filePos+t.size}const e=yield fi(this.reader,this.lastLoadedPos,this.reader.fileSize);if(!e)return void(this.lastSampleLoaded=!0);const t=e.header;this.lastLoadedPos=e.startPos+t.totalSize-1;const r=(i=t.mpegVersionId,n=t.channel,3===i?3===n?21:36:3===n?13:21);var i,n;let s=this.reader.requestSlice(e.startPos+r,4);if(s instanceof Promise&&(s=yield s),s){const e=Cn(s);if(1483304551===e||1231971951===e)return}this.firstFrameHeader||(this.firstFrameHeader=t),t.sampleRate!==this.firstFrameHeader.sampleRate&&console.warn(`MP3 changed sample rate mid-file: ${this.firstFrameHeader.sampleRate} Hz to ${t.sampleRate} Hz. Might be a bug, so please report this file.`);const a=t.audioSamplesInFrame/this.firstFrameHeader.sampleRate,o={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:a,dataStart:e.startPos,dataSize:t.totalSize};this.loadedSamples.push(o),this.nextTimestampInSamples+=t.audioSamplesInFrame})}getMimeType(){return u(this,null,function*(){return"audio/mpeg"})}getTracks(){return u(this,null,function*(){return yield this.readMetadata(),this.tracks})}computeDuration(){return u(this,null,function*(){yield this.readMetadata();const e=this.tracks[0];return p(e),e.computeDuration()})}getMetadataTags(){return u(this,null,function*(){const e=yield this.readingMutex.acquire();try{if(yield this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let e=0,t=!1;for(;;){let r=this.reader.requestSlice(e,10);if(r instanceof Promise&&(r=yield r),!r)break;const i=di(r);if(!i)break;t=!0;let n=this.reader.requestSlice(r.filePos,i.size);if(n instanceof Promise&&(n=yield n),!n)break;hi(n,i,this.metadataTags),e=r.filePos+i.size}if(!t&&null!==this.reader.fileSize&&this.reader.fileSize>=li){let e=this.reader.requestSlice(this.reader.fileSize-li,li);e instanceof Promise&&(e=yield e),p(e);"TAG"===Nn(e,3)&&((e,t)=>{var r;const i=e.filePos;null!=t.raw||(t.raw={}),null!=(r=t.raw).TAG||(r.TAG=Tn(e,125)),e.filePos=i;const n=ui(e,30);n&&(null!=t.title||(t.title=n));const s=ui(e,30);s&&(null!=t.artist||(t.artist=s));const a=ui(e,30);a&&(null!=t.album||(t.album=a));const o=ui(e,4),l=Number.parseInt(o,10);Number.isInteger(l)&&l>0&&(null!=t.date||(t.date=new Date(l,0,1)));const c=Tn(e,30);let u;if(0===c[28]&&0!==c[29]){const r=c[29];r>0&&(null!=t.trackNumber||(t.trackNumber=r)),e.skip(-30),u=ui(e,28),e.skip(2)}else e.skip(-30),u=ui(e,30);u&&(null!=t.comment||(t.comment=u));const d=Sn(e);d<ci.length&&(null!=t.genre||(t.genre=ci[d]))})(e,this.metadataTags)}return this.metadataTags}finally{e()}})}}class gi{constructor(e){this.demuxer=e}getId(){return 1}getFirstTimestamp(){return u(this,null,function*(){return 0})}getTimeResolution(){return p(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}computeDuration(){return u(this,null,function*(){var e,t;const r=yield this.getPacket(1/0,{metadataOnly:!0});return(null!=(e=null==r?void 0:r.timestamp)?e:0)+(null!=(t=null==r?void 0:r.duration)?t:0)})}getName(){return null}getLanguageCode(){return $}getCodec(){return"mp3"}getInternalCodecId(){return null}getNumberOfChannels(){return p(this.demuxer.firstFrameHeader),3===this.demuxer.firstFrameHeader.channel?1:2}getSampleRate(){return p(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate}getDisposition(){return c({},ge)}getDecoderConfig(){return u(this,null,function*(){return p(this.demuxer.firstFrameHeader),{codec:"mp3",numberOfChannels:3===this.demuxer.firstFrameHeader.channel?1:2,sampleRate:this.demuxer.firstFrameHeader.sampleRate}})}getPacketAtIndex(e,t){return u(this,null,function*(){if(-1===e)return null;const r=this.demuxer.loadedSamples[e];if(!r)return null;let i;if(t.metadataOnly)i=ut;else{let e=this.demuxer.reader.requestSlice(r.dataStart,r.dataSize);if(e instanceof Promise&&(e=yield e),!e)return null;i=Tn(e,r.dataSize)}return new dt(i,"key",r.timestamp,r.duration,e,r.dataSize)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getNextPacket(e,t){return u(this,null,function*(){const r=yield this.demuxer.readingMutex.acquire();try{const r=M(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===r)throw new Error("Packet was not created from this track.");const i=r+1;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{r()}})}getPacket(e,t){return u(this,null,function*(){const r=yield this.demuxer.readingMutex.acquire();try{for(;;){const r=N(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===r&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(r,t);if(r>=0&&r+1<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(r,t);yield this.demuxer.advanceReader()}}finally{r()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const ki=1399285583,bi=new Uint32Array(256);for(let Vn=0;Vn<256;Vn++){let e=Vn<<24;for(let t=0;t<8;t++)e=2147483648&e?e<<1^79764919:e<<1;bi[Vn]=e>>>0&4294967295}const yi=e=>{const t=v(e),r=t.getUint32(22,!0);t.setUint32(22,0,!0);let i=0;for(let n=0;n<e.length;n++){const t=e[n];i=(i<<8^bi[i>>>24^t])>>>0}return t.setUint32(22,r,!0),i},Ti=(e,t,r)=>{let i=0,n=null;if(e.length>0)if("vorbis"===t.codec){p(t.vorbisInfo);const s=(1<<(e=>{let t=0;for(;e;)t++,e>>=1;return t})(t.vorbisInfo.modeBlockflags.length-1))-1<<1,a=(e[0]&s)>>1;if(a>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let o=r;const l=t.vorbisInfo.modeBlockflags[a];if(n=t.vorbisInfo.blocksizes[l],1===l){const r=1+(1|s),i=e[0]&r?1:0;o=t.vorbisInfo.blocksizes[i]}i=null!==o?o+n>>2:0}else if("opus"===t.codec){i=(e=>{const t=e[0]>>3;return{durationInSamples:tt[t]}})(e).durationInSamples}return{durationInSamples:i,vorbisBlockSize:n}},Si=27,vi=282,wi=e=>{const t=e.filePos;if(_n(e)!==ki)return null;e.skip(1);const r=Sn(e),i=An(e),n=_n(e),s=_n(e),a=_n(e),o=Sn(e),l=new Uint8Array(o);for(let d=0;d<o;d++)l[d]=Sn(e);const c=27+o,u=l.reduce((e,t)=>e+t,0);return{headerStartPos:t,totalSize:c+u,dataStartPos:t+c,dataSize:u,headerType:r,granulePosition:i,serialNumber:n,sequenceNumber:s,checksum:a,lacingValues:l}},Ii=(e,t)=>{for(;e.filePos<t-3;){const t=_n(e),r=79;if((255&t)===r||(t>>>8&255)===r||(t>>>16&255)===r||(t>>>24&255)===r){if(e.skip(-4),t===ki)return!0;e.skip(1)}}return!1};class Pi extends ot{constructor(e){super(e),this.metadataPromise=null,this.bitstreams=[],this.tracks=[],this.metadataTags={},this.reader=e._reader}readMetadata(){return u(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>u(this,null,function*(){let e=0;for(;;){let t=this.reader.requestSliceRange(e,Si,vi);if(t instanceof Promise&&(t=yield t),!t)break;const r=wi(t);if(!r)break;if(!!!(2&r.headerType))break;this.bitstreams.push({serialNumber:r.serialNumber,bosPage:r,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=r.headerStartPos+r.totalSize}for(const t of this.bitstreams){const e=yield this.readPacket(t.bosPage,0);e&&(e.data.byteLength>=7&&1===e.data[0]&&118===e.data[1]&&111===e.data[2]&&114===e.data[3]&&98===e.data[4]&&105===e.data[5]&&115===e.data[6]?yield this.readVorbisMetadata(e,t):e.data.byteLength>=8&&79===e.data[0]&&112===e.data[1]&&117===e.data[2]&&115===e.data[3]&&72===e.data[4]&&101===e.data[5]&&97===e.data[6]&&100===e.data[7]&&(yield this.readOpusMetadata(e,t)),null!==t.codecInfo.codec&&this.tracks.push(new Xt(this.input,new xi(t,this))))}}))()})}readVorbisMetadata(e,t){return u(this,null,function*(){let r=yield this.findNextPacketStart(e);if(!r)return;const i=yield this.readPacket(r.startPage,r.startSegmentIndex);if(!i)return;if(r=yield this.findNextPacketStart(i),!r)return;const n=yield this.readPacket(r.startPage,r.startSegmentIndex);if(!n)return;if(3!==i.data[0]||5!==n.data[0])return;const s=[],a=e=>{for(;s.push(Math.min(255,e)),!(e<255);)e-=255};a(e.data.length),a(i.data.length);const o=new Uint8Array(1+s.length+e.data.length+i.data.length+n.data.length);o[0]=2,o.set(s,1),o.set(e.data,1+s.length),o.set(i.data,1+s.length+e.data.length),o.set(n.data,1+s.length+e.data.length+i.data.length),t.codecInfo.codec="vorbis",t.description=o,t.lastMetadataPacket=n;const l=v(e.data);t.numberOfChannels=l.getUint8(11),t.sampleRate=l.getUint32(12,!0);const c=l.getUint8(28);t.codecInfo.vorbisInfo={blocksizes:[1<<(15&c),1<<(c>>4)],modeBlockflags:rt(n.data).modeBlockflags},at(i.data.subarray(7),this.metadataTags)})}readOpusMetadata(e,t){return u(this,null,function*(){const r=yield this.findNextPacketStart(e);if(!r)return;const i=yield this.readPacket(r.startPage,r.startSegmentIndex);if(!i)return;t.codecInfo.codec="opus",t.description=e.data,t.lastMetadataPacket=i;const n=(e=>{const t=v(e),r=t.getUint8(9),i=t.getUint16(10,!0),n=t.getUint32(12,!0),s=t.getInt16(16,!0),a=t.getUint8(18);let o=null;return a&&(o=e.subarray(19,21+r)),{outputChannelCount:r,preSkip:i,inputSampleRate:n,outputGain:s,channelMappingFamily:a,channelMappingTable:o}})(e.data);t.numberOfChannels=n.outputChannelCount,t.sampleRate=xe,t.codecInfo.opusInfo={preSkip:n.preSkip},at(i.data.subarray(8),this.metadataTags)})}readPacket(e,t){return u(this,null,function*(){p(t<e.lacingValues.length);let r=0;for(let u=0;u<t;u++)r+=e.lacingValues[u];let i=e,n=r,s=t;const a=[];e:for(;;){let t=this.reader.requestSlice(i.dataStartPos,i.dataSize);t instanceof Promise&&(t=yield t),p(t);const o=Tn(t,i.dataSize);for(;;){if(s===i.lacingValues.length){a.push(o.subarray(r,n));break}const e=i.lacingValues[s];if(n+=e,e<255){a.push(o.subarray(r,n));break e}s++}let l=i.headerStartPos+i.totalSize;for(;;){let t=this.reader.requestSliceRange(l,Si,vi);if(t instanceof Promise&&(t=yield t),!t)return null;const r=wi(t);if(!r)return null;if(i=r,i.serialNumber===e.serialNumber)break;l=i.headerStartPos+i.totalSize}r=0,n=0,s=0}const o=a.reduce((e,t)=>e+t.length,0);if(0===o)return null;const l=new Uint8Array(o);let c=0;for(let e=0;e<a.length;e++){const t=a[e];l.set(t,c),c+=t.length}return{data:l,endPage:i,endSegmentIndex:s}})}findNextPacketStart(e){return u(this,null,function*(){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 r=this.reader.requestSliceRange(t,Si,vi);if(r instanceof Promise&&(r=yield r),!r)return null;const i=wi(r);if(!i)return null;if(i.serialNumber===e.endPage.serialNumber)return{startPage:i,startSegmentIndex:0};t=i.headerStartPos+i.totalSize}})}getMimeType(){return u(this,null,function*(){yield this.readMetadata();return(e=>{let t="audio/ogg";e.codecStrings&&(t+=`; codecs="${[...new Set(e.codecStrings)].join(", ")}"`);return t})({codecStrings:(yield Promise.all(this.tracks.map(e=>e.getCodecParameterString()))).filter(Boolean)})})}getTracks(){return u(this,null,function*(){return yield this.readMetadata(),this.tracks})}computeDuration(){return u(this,null,function*(){const e=yield this.getTracks(),t=yield Promise.all(e.map(e=>e.computeDuration()));return Math.max(0,...t)})}getMetadataTags(){return u(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}class xi{constructor(e,t){this.bitstream=e,this.demuxer=t,this.encodedPacketToMetadata=new WeakMap,this.sequentialScanCache=[],this.sequentialScanMutex=new D,this.internalSampleRate="opus"===e.codecInfo.codec?xe:e.sampleRate}getId(){return this.bitstream.serialNumber}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}getDecoderConfig(){return u(this,null,function*(){var e;return p(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:null!=(e=this.bitstream.description)?e:void 0}})}getName(){return null}getLanguageCode(){return $}getDisposition(){return c({},ge)}getFirstTimestamp(){return u(this,null,function*(){return 0})}computeDuration(){return u(this,null,function*(){var e,t;const r=yield this.getPacket(1/0,{metadataOnly:!0});return(null!=(e=null==r?void 0:r.timestamp)?e:0)+(null!=(t=null==r?void 0:r.duration)?t:0)})}granulePositionToTimestampInSamples(e){return"opus"===this.bitstream.codecInfo.codec?(p(this.bitstream.codecInfo.opusInfo),e-this.bitstream.codecInfo.opusInfo.preSkip):e}createEncodedPacketFromOggPacket(e,t,r){if(!e)return null;const{durationInSamples:i,vorbisBlockSize:n}=Ti(e.data,this.bitstream.codecInfo,t.vorbisLastBlocksize),s=new dt(r.metadataOnly?ut:e.data,"key",Math.max(0,t.timestampInSamples)/this.internalSampleRate,i/this.internalSampleRate,e.endPage.headerStartPos+e.endSegmentIndex,e.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:e,timestampInSamples:t.timestampInSamples,durationInSamples:i,vorbisLastBlockSize:t.vorbisLastBlocksize,vorbisBlockSize:n}),s}getFirstPacket(e){return u(this,null,function*(){p(this.bitstream.lastMetadataPacket);const t=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!t)return null;let r=0;"opus"===this.bitstream.codecInfo.codec&&(p(this.bitstream.codecInfo.opusInfo),r-=this.bitstream.codecInfo.opusInfo.preSkip);const i=yield this.demuxer.readPacket(t.startPage,t.startSegmentIndex);return this.createEncodedPacketFromOggPacket(i,{timestampInSamples:r,vorbisLastBlocksize:null},e)})}getNextPacket(e,t){return u(this,null,function*(){const r=this.encodedPacketToMetadata.get(e);if(!r)throw new Error("Packet was not created from this track.");const i=yield this.demuxer.findNextPacketStart(r.packet);if(!i)return null;const n=r.timestampInSamples+r.durationInSamples,s=yield this.demuxer.readPacket(i.startPage,i.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:n,vorbisLastBlocksize:r.vorbisBlockSize},t)})}getPacket(e,t){return u(this,null,function*(){var r,i;if(null===this.demuxer.reader.fileSize)return this.getPacketSequential(e,t);const n=Q(e*this.internalSampleRate);if(0===n)return this.getFirstPacket(t);if(n<0)return null;p(this.bitstream.lastMetadataPacket);const s=yield this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!s)return null;let a=s.startPage,o=this.demuxer.reader.fileSize;const l=[a];e:for(;a.headerStartPos+a.totalSize<o;){const e=a.headerStartPos,t=Math.floor((e+o)/2);let r=t;for(;;){const e=Math.min(r+65307,o-Si);let i=this.demuxer.reader.requestSlice(r,e-r);i instanceof Promise&&(i=yield i),p(i);if(!Ii(i,e)){o=t+Si;continue e}let s=this.demuxer.reader.requestSliceRange(i.filePos,Si,vi);s instanceof Promise&&(s=yield s),p(s);const c=wi(s);p(c);let u=!1;if(c.serialNumber===this.bitstream.serialNumber)u=!0;else{let e=this.demuxer.reader.requestSlice(c.headerStartPos,c.totalSize);e instanceof Promise&&(e=yield e),p(e);const t=Tn(e,c.totalSize);u=yi(t)===c.checksum}if(!u){r=c.headerStartPos+4;continue}if(u&&c.serialNumber!==this.bitstream.serialNumber){r=c.headerStartPos+c.totalSize;continue}if(!(-1===c.granulePosition)){this.granulePositionToTimestampInSamples(c.granulePosition)>n?o=c.headerStartPos:(a=c,l.push(c));continue e}r=c.headerStartPos+c.totalSize}}let c=s.startPage;for(const e of l){if(e.granulePosition===a.granulePosition)break;(!c||e.headerStartPos>c.headerStartPos)&&(c=e)}let u=c;const d=[u];for(;u.serialNumber!==this.bitstream.serialNumber||u.granulePosition!==a.granulePosition;){const e=u.headerStartPos+u.totalSize;let t=this.demuxer.reader.requestSliceRange(e,Si,vi);t instanceof Promise&&(t=yield t),p(t);const r=wi(t);p(r),u=r,u.serialNumber===this.bitstream.serialNumber&&d.push(u)}p(-1!==u.granulePosition);let h,m,f=null,g=u,k=0;if(u.headerStartPos===s.startPage.headerStartPos)h=this.granulePositionToTimestampInSamples(0),m=!0,f=0;else{h=0,m=!1;for(let t=u.lacingValues.length-1;t>=0;t--){if(u.lacingValues[t]<255){f=t+1;break}}if(null===f)throw new Error("Invalid page with granule position: no packets end on this page.");k=f-1;const e={data:ut,endPage:g,endSegmentIndex:k};if(yield this.demuxer.findNextPacketStart(e)){const e=_i(d,u,f);p(e);const t=Ci(d,e.page,e.segmentIndex);t&&(u=t.page,f=t.segmentIndex)}else for(;;){const e=_i(d,u,f);if(!e)break;const t=Ci(d,e.page,e.segmentIndex);if(!t)break;if(u=t.page,f=t.segmentIndex,e.page.headerStartPos!==g.headerStartPos){g=e.page,k=e.segmentIndex;break}}}let b=null,y=null;for(;null!==u;){p(null!==f);const e=yield this.demuxer.readPacket(u,f);if(!e)break;if(!(u.headerStartPos===s.startPage.headerStartPos&&f<s.startSegmentIndex)){let s=this.createEncodedPacketFromOggPacket(e,{timestampInSamples:h,vorbisLastBlocksize:null!=(r=null==y?void 0:y.vorbisBlockSize)?r:null},t);p(s);let a=this.encodedPacketToMetadata.get(s);if(p(a),m||e.endPage.headerStartPos!==g.headerStartPos||e.endSegmentIndex!==k?h+=a.durationInSamples:(h=this.granulePositionToTimestampInSamples(u.granulePosition),m=!0,s=this.createEncodedPacketFromOggPacket(e,{timestampInSamples:h-a.durationInSamples,vorbisLastBlocksize:null!=(i=null==y?void 0:y.vorbisBlockSize)?i:null},t),p(s),a=this.encodedPacketToMetadata.get(s),p(a)),b=s,y=a,m&&(Math.max(h,0)>n||Math.max(a.timestampInSamples,0)===n))break}const a=yield this.demuxer.findNextPacketStart(e);if(!a)break;u=a.startPage,f=a.startSegmentIndex}return b})}getPacketSequential(e,t){return u(this,null,function*(){const r=yield this.sequentialScanMutex.acquire();try{const r=Q(e*this.internalSampleRate);e=r/this.internalSampleRate;const i=N(this.sequentialScanCache,r,e=>e.timestampInSamples);let n;if(-1!==i){const e=this.sequentialScanCache[i];n=this.createEncodedPacketFromOggPacket(e.packet,{timestampInSamples:e.timestampInSamples,vorbisLastBlocksize:e.vorbisLastBlockSize},t)}else n=yield this.getFirstPacket(t);let s=0;for(;n&&n.timestamp<e;){const r=yield this.getNextPacket(n,t);if(!r||r.timestamp>e)break;if(n=r,s++,100===s){s=0;const e=this.encodedPacketToMetadata.get(n);p(e),this.sequentialScanCache.length>0&&p(k(this.sequentialScanCache).timestampInSamples<=e.timestampInSamples),this.sequentialScanCache.push(e)}}return n}finally{r()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Ci=(e,t,r)=>{let i=t,n=r;e:for(;;){for(n--;n>=0;n--){if(i.lacingValues[n]<255){n++;break e}}p(-1===n);if(!(1&i.headerType)){n=0;break}const t=L(e,e=>e.headerStartPos<i.headerStartPos);if(!t)return null;i=t,n=i.lacingValues.length}if(p(-1!==n),n===i.lacingValues.length){const t=e[e.indexOf(i)+1];p(t),i=t,n=0}return{page:i,segmentIndex:n}},_i=(e,t,r)=>{if(r>0)return{page:t,segmentIndex:r-1};const i=L(e,e=>e.headerStartPos<t.headerStartPos);return i?{page:i,segmentIndex:i.lacingValues.length-1}:null};var Bi,Ei;(Ei=Bi||(Bi={}))[Ei.PCM=1]="PCM",Ei[Ei.IEEE_FLOAT=3]="IEEE_FLOAT",Ei[Ei.ALAW=6]="ALAW",Ei[Ei.MULAW=7]="MULAW",Ei[Ei.EXTENSIBLE=65534]="EXTENSIBLE";class Fi extends ot{constructor(e){super(e),this.metadataPromise=null,this.dataStart=-1,this.dataSize=-1,this.audioInfo=null,this.tracks=[],this.lastKnownPacketIndex=0,this.metadataTags={},this.reader=e._reader}readMetadata(){return u(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>u(this,null,function*(){var e,t;let r=this.reader.requestSlice(0,12);r instanceof Promise&&(r=yield r),p(r);const i=Nn(r,4),n="RIFX"!==i,s="RF64"===i,a=xn(r,n);let o=s?this.reader.fileSize:Math.min(a+8,null!=(e=this.reader.fileSize)?e:1/0);if("WAVE"!==Nn(r,4))throw new Error("Invalid WAVE file - wrong format");let l=0,c=null,u=r.filePos;for(;null===o||u<o;){let e=this.reader.requestSlice(u,8);if(e instanceof Promise&&(e=yield e),!e)break;const r=Nn(e,4),i=xn(e,n),a=e.filePos;if(s&&0===l&&"ds64"!==r)throw new Error('Invalid RF64 file: First chunk must be "ds64".');if("fmt "===r)yield this.parseFmtChunk(a,i,n);else if("data"===r){if(null!=c||(c=i),this.dataStart=e.filePos,this.dataSize=Math.min(c,(null!=o?o:1/0)-this.dataStart),null===this.reader.fileSize)break}else if("ds64"===r){let e=this.reader.requestSlice(a,i);if(e instanceof Promise&&(e=yield e),!e)break;const r=En(e,n);c=En(e,n),o=Math.min(r+8,null!=(t=this.reader.fileSize)?t:1/0)}else"LIST"===r?yield this.parseListChunk(a,i,n):"ID3 "!==r&&"id3 "!==r||(yield this.parseId3Chunk(a,i));u=a+i+(1&i),l++}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 d=this.audioInfo.blockSizeInBytes;this.dataSize=Math.floor(this.dataSize/d)*d,this.tracks.push(new Xt(this.input,new Ai(this)))}))()})}parseFmtChunk(e,t,r){return u(this,null,function*(){let i=this.reader.requestSlice(e,t);if(i instanceof Promise&&(i=yield i),!i)return;let n=vn(i,r);const s=vn(i,r),a=xn(i,r);i.skip(4);const o=vn(i,r);let l;if(l=14===t?8:vn(i,r),t>=18&&357!==n){const e=vn(i,r),s=t-18;if(Math.min(s,e)>=22&&n===Bi.EXTENSIBLE){i.skip(6);const e=Tn(i,16);n=e[0]|e[1]<<8}}n!==Bi.MULAW&&n!==Bi.ALAW||(l=8),this.audioInfo={format:n,numberOfChannels:s,sampleRate:a,sampleSizeInBytes:Math.ceil(l/8),blockSizeInBytes:o}})}parseListChunk(e,t,r){return u(this,null,function*(){var i,n,s,a,o,l,c,u,d,h,m;let f=this.reader.requestSlice(e,t);if(f instanceof Promise&&(f=yield f),!f)return;const p=Nn(f,4);if("INFO"!==p&&"INF0"!==p)return;let g=f.filePos;for(;g<=e+t-8;){f.filePos=g;const e=Nn(f,4),t=xn(f,r),p=Tn(f,t);let k=0;for(let r=0;r<p.length&&0!==p[r];r++)k++;const b=String.fromCharCode(...p.subarray(0,k));switch(null!=(i=this.metadataTags).raw||(i.raw={}),this.metadataTags.raw[e]=b,e){case"INAM":case"TITL":null!=(n=this.metadataTags).title||(n.title=b);break;case"TIT3":null!=(s=this.metadataTags).description||(s.description=b);break;case"IART":null!=(a=this.metadataTags).artist||(a.artist=b);break;case"IPRD":null!=(o=this.metadataTags).album||(o.album=b);break;case"IPRT":case"ITRK":case"TRCK":{const e=b.split("/"),t=Number.parseInt(e[0],10),r=e[1]&&Number.parseInt(e[1],10);Number.isInteger(t)&&t>0&&(null!=(l=this.metadataTags).trackNumber||(l.trackNumber=t)),r&&Number.isInteger(r)&&r>0&&(null!=(c=this.metadataTags).tracksTotal||(c.tracksTotal=r))}break;case"ICRD":case"IDIT":{const e=new Date(b);Number.isNaN(e.getTime())||null!=(u=this.metadataTags).date||(u.date=e)}break;case"YEAR":{const e=Number.parseInt(b,10);Number.isInteger(e)&&e>0&&(null!=(d=this.metadataTags).date||(d.date=new Date(e,0,1)))}break;case"IGNR":case"GENR":null!=(h=this.metadataTags).genre||(h.genre=b);break;case"ICMT":case"CMNT":case"COMM":null!=(m=this.metadataTags).comment||(m.comment=b)}g+=8+t+(1&t)}})}parseId3Chunk(e,t){return u(this,null,function*(){let r=this.reader.requestSlice(e,t);if(r instanceof Promise&&(r=yield r),!r)return;const i=di(r);if(i){const t=r.slice(e+10,i.size);hi(t,i,this.metadataTags)}})}getCodec(){if(p(this.audioInfo),this.audioInfo.format===Bi.MULAW)return"ulaw";if(this.audioInfo.format===Bi.ALAW)return"alaw";if(this.audioInfo.format===Bi.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"}return this.audioInfo.format===Bi.IEEE_FLOAT&&4===this.audioInfo.sampleSizeInBytes?"pcm-f32":null}getMimeType(){return u(this,null,function*(){return"audio/wav"})}computeDuration(){return u(this,null,function*(){yield this.readMetadata();const e=this.tracks[0];return p(e),e.computeDuration()})}getTracks(){return u(this,null,function*(){return yield this.readMetadata(),this.tracks})}getMetadataTags(){return u(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}}const Di=2048;class Ai{constructor(e){this.demuxer=e}getId(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.format}getDecoderConfig(){return u(this,null,function*(){const e=this.demuxer.getCodec();return e?(p(this.demuxer.audioInfo),{codec:e,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null})}computeDuration(){return u(this,null,function*(){var e,t;const r=yield this.getPacket(1/0,{metadataOnly:!0});return(null!=(e=null==r?void 0:r.timestamp)?e:0)+(null!=(t=null==r?void 0:r.duration)?t:0)})}getNumberOfChannels(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return $}getDisposition(){return c({},ge)}getFirstTimestamp(){return u(this,null,function*(){return 0})}getPacketAtIndex(e,t){return u(this,null,function*(){p(this.demuxer.audioInfo);const r=e*Di*this.demuxer.audioInfo.blockSizeInBytes;if(r>=this.demuxer.dataSize)return null;const i=Math.min(Di*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-r);if(null===this.demuxer.reader.fileSize){let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+r,i);if(e instanceof Promise&&(e=yield e),!e)return null}let n;if(t.metadataOnly)n=ut;else{let e=this.demuxer.reader.requestSlice(this.demuxer.dataStart+r,i);e instanceof Promise&&(e=yield e),p(e),n=Tn(e,i)}const s=e*Di/this.demuxer.audioInfo.sampleRate,a=i/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(e,s),new dt(n,"key",s,a,e,i)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getPacket(e,t){return u(this,null,function*(){p(this.demuxer.audioInfo);const r=Math.floor(Math.min(e*this.demuxer.audioInfo.sampleRate/Di,(this.demuxer.dataSize-1)/(Di*this.demuxer.audioInfo.blockSizeInBytes))),i=yield this.getPacketAtIndex(r,t);if(i)return i;if(0===r)return null;p(null===this.demuxer.reader.fileSize);let n=yield this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,t);for(;n;){const e=yield this.getNextPacket(n,t);if(!e)break;n=e}return n})}getNextPacket(e,t){p(this.demuxer.audioInfo);const r=Math.round(e.timestamp*this.demuxer.audioInfo.sampleRate/Di);return this.getPacketAtIndex(r+1,t)}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}const Ri=e=>{const t=e.filePos,r=Tn(e,9),i=new b(r);if(4095!==i.readBits(12))return null;i.skipBits(1);if(0!==i.readBits(2))return null;const n=i.readBits(1),s=i.readBits(2)+1,a=i.readBits(4);if(15===a)return null;i.skipBits(1);const o=i.readBits(3);if(0===o)throw new Error("ADTS frames with channel configuration 0 are not supported.");i.skipBits(1),i.skipBits(1),i.skipBits(1),i.skipBits(1);const l=i.readBits(13);i.skipBits(11);const c=i.readBits(2)+1;if(1!==c)throw new Error("ADTS frames with more than one AAC frame are not supported.");let u=null;return 1===n?e.filePos-=2:u=i.readBits(16),{objectType:s,samplingFrequencyIndex:a,channelConfiguration:o,frameLength:l,numberOfAacFrames:c,crcCheck:u,startPos:t}},Mi=1024;class Ni extends ot{constructor(e){super(e),this.metadataPromise=null,this.firstFrameHeader=null,this.loadedSamples=[],this.tracks=[],this.readingMutex=new D,this.lastSampleLoaded=!1,this.lastLoadedPos=0,this.nextTimestampInSamples=0,this.reader=e._reader}readMetadata(){return u(this,null,function*(){var e;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>u(this,null,function*(){for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)yield this.advanceReader();p(this.firstFrameHeader),this.tracks=[new Xt(this.input,new zi(this))]}))()})}advanceReader(){return u(this,null,function*(){let e=this.reader.requestSliceRange(this.lastLoadedPos,7,9);if(e instanceof Promise&&(e=yield e),!e)return void(this.lastSampleLoaded=!0);const t=Ri(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 r=we[t.samplingFrequencyIndex];p(void 0!==r);const i=Mi/r,n=t.crcCheck?9:7,s={timestamp:this.nextTimestampInSamples/r,duration:i,dataStart:t.startPos+n,dataSize:t.frameLength-n};this.loadedSamples.push(s),this.nextTimestampInSamples+=Mi,this.lastLoadedPos=t.startPos+t.frameLength})}getMimeType(){return u(this,null,function*(){return"audio/aac"})}getTracks(){return u(this,null,function*(){return yield this.readMetadata(),this.tracks})}computeDuration(){return u(this,null,function*(){yield this.readMetadata();const e=this.tracks[0];return p(e),e.computeDuration()})}getMetadataTags(){return u(this,null,function*(){return{}})}}class zi{constructor(e){this.demuxer=e}getId(){return 1}getFirstTimestamp(){return u(this,null,function*(){return 0})}getTimeResolution(){return this.getSampleRate()/Mi}computeDuration(){return u(this,null,function*(){var e,t;const r=yield this.getPacket(1/0,{metadataOnly:!0});return(null!=(e=null==r?void 0:r.timestamp)?e:0)+(null!=(t=null==r?void 0:r.duration)?t:0)})}getName(){return null}getLanguageCode(){return $}getCodec(){return"aac"}getInternalCodecId(){return p(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){p(this.demuxer.firstFrameHeader);const e=Ie[this.demuxer.firstFrameHeader.channelConfiguration];return p(void 0!==e),e}getSampleRate(){p(this.demuxer.firstFrameHeader);const e=we[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return p(void 0!==e),e}getDisposition(){return c({},ge)}getDecoderConfig(){return u(this,null,function*(){p(this.demuxer.firstFrameHeader);const e=new Uint8Array(3),t=new b(e),{objectType:r,samplingFrequencyIndex:i,channelConfiguration:n}=this.demuxer.firstFrameHeader;return r>31?(t.writeBits(5,31),t.writeBits(6,r-32)):t.writeBits(5,r),t.writeBits(4,i),t.writeBits(4,n),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate(),description:e.subarray(0,Math.ceil((t.pos-1)/8))}})}getPacketAtIndex(e,t){return u(this,null,function*(){if(-1===e)return null;const r=this.demuxer.loadedSamples[e];if(!r)return null;let i;if(t.metadataOnly)i=ut;else{let e=this.demuxer.reader.requestSlice(r.dataStart,r.dataSize);if(e instanceof Promise&&(e=yield e),!e)return null;i=Tn(e,r.dataSize)}return new dt(i,"key",r.timestamp,r.duration,e,r.dataSize)})}getFirstPacket(e){return this.getPacketAtIndex(0,e)}getNextPacket(e,t){return u(this,null,function*(){const r=yield this.demuxer.readingMutex.acquire();try{const r=M(this.demuxer.loadedSamples,e.timestamp,e=>e.timestamp);if(-1===r)throw new Error("Packet was not created from this track.");const i=r+1;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(i,t)}finally{r()}})}getPacket(e,t){return u(this,null,function*(){const r=yield this.demuxer.readingMutex.acquire();try{for(;;){const r=N(this.demuxer.loadedSamples,e,e=>e.timestamp);if(-1===r&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(r,t);if(r>=0&&r+1<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(r,t);yield this.demuxer.advanceReader()}}finally{r()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}}class Oi extends ot{constructor(e){super(e),this.loadedSamples=[],this.metadataPromise=null,this.track=null,this.metadataTags={},this.audioInfo=null,this.lastLoadedPos=null,this.blockingBit=null,this.readingMutex=new D,this.lastSampleLoaded=!1,this.reader=e._reader}computeDuration(){return u(this,null,function*(){return yield this.readMetadata(),p(this.track),this.track.computeDuration()})}getMetadataTags(){return u(this,null,function*(){return yield this.readMetadata(),this.metadataTags})}getTracks(){return u(this,null,function*(){return yield this.readMetadata(),p(this.track),[this.track]})}getMimeType(){return u(this,null,function*(){return"audio/flac"})}readMetadata(){return u(this,null,function*(){var e;let t=4;return null!=(e=this.metadataPromise)?e:this.metadataPromise=(()=>u(this,null,function*(){for(var e;null===this.reader.fileSize||t<this.reader.fileSize;){let r=this.reader.requestSlice(t,4);if(r instanceof Promise&&(r=yield r),t+=4,null===r)throw new Error(`Metadata block at position ${t} is too small! Corrupted file.`);p(r);const i=Sn(r),n=In(r),s=0!==(128&i);switch(127&i){case nt.STREAMINFO:{let e=this.reader.requestSlice(t,n);if(e instanceof Promise&&(e=yield e),p(e),null===e)throw new Error(`StreamInfo block at position ${t} is too small! Corrupted file.`);const r=Tn(e,34),i=new b(r),s=i.readBits(16),a=i.readBits(16),o=i.readBits(24),l=i.readBits(24),c=i.readBits(20),u=i.readBits(3)+1;i.readBits(5);const d=i.readBits(36);i.skipBits(128);const h=new Uint8Array(42);h.set(new Uint8Array([102,76,97,67]),0),h.set(new Uint8Array([128,0,0,34]),4),h.set(r,8),this.audioInfo={numberOfChannels:u,sampleRate:c,totalSamples:d,minimumBlockSize:s,maximumBlockSize:a,minimumFrameSize:o,maximumFrameSize:l,description:h},this.track=new Xt(this.input,new Li(this));break}case nt.VORBIS_COMMENT:{let e=this.reader.requestSlice(t,n);e instanceof Promise&&(e=yield e),p(e),at(Tn(e,n),this.metadataTags);break}case nt.PICTURE:{let r=this.reader.requestSlice(t,n);r instanceof Promise&&(r=yield r),p(r);const i=Cn(r),s=Cn(r),a=w.decode(Tn(r,s)),o=Cn(r),l=w.decode(Tn(r,o));r.skip(16);const c=Cn(r),u=Tn(r,c);null!=(e=this.metadataTags).images||(e.images=[]),this.metadataTags.images.push({data:u,mimeType:a,kind:3===i?"coverFront":4===i?"coverBack":"unknown",description:l});break}}if(t+=n,s){this.lastLoadedPos=t;break}}}))()})}readNextFlacFrame(e){return u(this,arguments,function*({startPos:e,isFirstPacket:t}){p(this.audioInfo);const r=this.audioInfo.maximumFrameSize+16,i=yield this.reader.requestSliceRange(e,this.audioInfo.minimumFrameSize,r);if(!i)return null;const n=this.readFlacFrameHeader({slice:i,isFirstPacket:t});if(!n)return null;for(i.filePos=e+this.audioInfo.minimumFrameSize;;){if(i.filePos>i.end-6)return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:i.end-e,isLastFrame:!0};if(255===Sn(i)){const t=i.filePos;if(Sn(i)!==(1===this.blockingBit?249:248)){i.filePos=t;continue}i.skip(-2);const r=i.filePos-e,s=this.readFlacFrameHeader({slice:i,isFirstPacket:!1});if(!s){i.filePos=t;continue}if(0===this.blockingBit){if(s.num-n.num!==1){i.filePos=t;continue}}else if(s.num-n.num!==n.blockSize){i.filePos=t;continue}return{num:n.num,blockSize:n.blockSize,sampleRate:n.sampleRate,size:r,isLastFrame:!1}}}})}readFlacFrameHeader({slice:e,isFirstPacket:t}){const r=e.filePos,i=Tn(e,4),n=new b(i);if(32764!==n.readBits(15))return null;if(null===this.blockingBit){p(t);const e=n.readBits(1);this.blockingBit=e}else if(1===this.blockingBit){p(!t);if(1!==n.readBits(1))return null}else{if(0!==this.blockingBit)throw new Error("Invalid blocking bit");p(!t);if(0!==n.readBits(1))return null}const s=(e=>0===e?null:1===e?192:e>=2&&e<=5?144*o(2,e):6===e?"uncommon-u8":7===e?"uncommon-u16":e>=8&&e<=15?o(2,e):null)(n.readBits(4));if(!s)return null;p(this.audioInfo);const a=((e,t)=>{switch(e){case 0:return t;case 1:return 88200;case 2:return 176400;case 3:return 192e3;case 4:return 8e3;case 5:return 16e3;case 6:return 22050;case 7:return 24e3;case 8:return 32e3;case 9:return 44100;case 10:return 48e3;case 11:return 96e3;case 12:return"uncommon-u8";case 13:return"uncommon-u16";case 14:return"uncommon-u16-10";default:return null}})(n.readBits(4),this.audioInfo.sampleRate);if(!a)return null;n.readBits(4),n.readBits(3);if(0!==n.readBits(1))return null;const l=(e=>{let t=0;const r=new b(Tn(e,1));for(;1===r.readBits(1);)t++;if(0===t)return r.readBits(7);const i=[],n=t-1,s=new b(Tn(e,n)),a=8-t-1;for(let o=0;o<a;o++)i.unshift(r.readBits(1));for(let o=0;o<n;o++)for(let e=0;e<8;e++){const t=s.readBits(1);e<2||i.unshift(t)}return i.reduce((e,t,r)=>e|t<<r,0)})(e),c=((e,t)=>"uncommon-u16"===t?wn(e)+1:"uncommon-u8"===t?Sn(e)+1:"number"===typeof t?t:(q(t),void p(!1)))(e,s),u=((e,t)=>"uncommon-u16"===t?wn(e):"uncommon-u16-10"===t?10*wn(e):"uncommon-u8"===t?Sn(e):"number"===typeof t?t:null)(e,a);if(null===u)return null;if(u!==this.audioInfo.sampleRate)return null;const d=e.filePos-r,h=Sn(e);e.skip(-d),e.skip(-1);const m=(e=>{let t=0;for(const r of e){t^=r;for(let e=0;e<8;e++)0!==(128&t)?t=t<<1^7:t<<=1,t&=255}return t})(Tn(e,d));return h!==m?null:{num:l,blockSize:c,sampleRate:u}}advanceReader(){return u(this,null,function*(){yield this.readMetadata(),p(null!==this.lastLoadedPos),p(this.audioInfo);const e=this.lastLoadedPos,t=yield this.readNextFlacFrame({startPos:e,isFirstPacket:0===this.loadedSamples.length});if(!t)return void(this.lastSampleLoaded=!0);const r=this.loadedSamples[this.loadedSamples.length-1],i={blockOffset:r?r.blockOffset+r.blockSize:0,blockSize:t.blockSize,byteOffset:e,byteSize:t.size};this.lastLoadedPos=this.lastLoadedPos+t.size,this.loadedSamples.push(i),t.isLastFrame&&(this.lastSampleLoaded=!0)})}}class Li{constructor(e){this.demuxer=e}getId(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}computeDuration(){return u(this,null,function*(){var e,t;const r=yield this.getPacket(1/0,{metadataOnly:!0});return(null!=(e=null==r?void 0:r.timestamp)?e:0)+(null!=(t=null==r?void 0:r.duration)?t:0)})}getSampleRate(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return $}getTimeResolution(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getDisposition(){return c({},ge)}getFirstTimestamp(){return u(this,null,function*(){return 0})}getDecoderConfig(){return u(this,null,function*(){return p(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}})}getPacket(e,t){return u(this,null,function*(){if(p(this.demuxer.audioInfo),e<0)throw new Error("Timestamp cannot be negative");const r=yield this.demuxer.readingMutex.acquire();try{for(;;){const r=N(this.demuxer.loadedSamples,e,e=>e.blockOffset/this.demuxer.audioInfo.sampleRate);if(-1===r){yield this.demuxer.advanceReader();continue}const i=this.demuxer.loadedSamples[r],n=i.blockOffset/this.demuxer.audioInfo.sampleRate;if(!(n+i.blockSize/this.demuxer.audioInfo.sampleRate<=e))return this.getPacketAtIndex(r,t);if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,t);yield this.demuxer.advanceReader()}}finally{r()}})}getNextPacket(e,t){return u(this,null,function*(){const r=yield this.demuxer.readingMutex.acquire();try{const r=e.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&r>=this.demuxer.loadedSamples.length)return null;for(;r>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(r,t)}finally{r()}})}getKeyPacket(e,t){return this.getPacket(e,t)}getNextKeyPacket(e,t){return this.getNextPacket(e,t)}getPacketAtIndex(e,t){return u(this,null,function*(){const r=this.demuxer.loadedSamples[e];if(!r)return null;let i;if(t.metadataOnly)i=ut;else{let e=this.demuxer.reader.requestSlice(r.byteOffset,r.byteSize);if(e instanceof Promise&&(e=yield e),!e)return null;i=Tn(e,r.byteSize)}p(this.demuxer.audioInfo);const n=r.blockOffset/this.demuxer.audioInfo.sampleRate,s=r.blockSize/this.demuxer.audioInfo.sampleRate;return new dt(i,"key",n,s,e,r.byteSize)})}getFirstPacket(e){return u(this,null,function*(){for(;0===this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)yield this.demuxer.advanceReader();return this.getPacketAtIndex(0,e)})}}class Ui{}class Vi extends Ui{_getMajorBrand(e){return u(this,null,function*(){let t=e._reader.requestSlice(0,12);if(t instanceof Promise&&(t=yield t),!t)return null;t.skip(4);return"ftyp"!==Nn(t,4)?null:Nn(t,4)})}_createDemuxer(e){return new ir(e)}}class qi extends Vi{_canReadInput(e){return u(this,null,function*(){const t=yield this._getMajorBrand(e);return!!t&&"qt  "!==t})}get name(){return"MP4"}get mimeType(){return"video/mp4"}}class Hi extends Vi{_canReadInput(e){return u(this,null,function*(){return"qt  "===(yield this._getMajorBrand(e))})}get name(){return"QuickTime File Format"}get mimeType(){return"video/quicktime"}}class Wi extends Ui{isSupportedEBMLOfDocType(e,t){return u(this,null,function*(){let r=e._reader.requestSlice(0,yr);if(r instanceof Promise&&(r=yield r),!r)return!1;const i=Tr(r);if(null===i)return!1;if(i<1||i>8)return!1;if(vr(r,i)!==fr.EBML)return!1;const n=Ir(r);if("number"!==typeof n)return!1;let s=e._reader.requestSlice(r.filePos,n);if(s instanceof Promise&&(s=yield s),!s)return!1;const a=r.filePos;for(;s.filePos<=a+n-2;){const e=Pr(s);if(!e)break;const{id:r,size:i}=e,n=s.filePos;if(void 0===i)return!1;switch(r){case fr.EBMLVersion:if(1!==vr(s,i))return!1;break;case fr.EBMLReadVersion:if(1!==vr(s,i))return!1;break;case fr.DocType:if(xr(s,i)!==t)return!1;break;case fr.DocTypeVersion:if(vr(s,i)>4)return!1}s.filePos=n+i}return!0})}_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"matroska")}_createDemuxer(e){return new Xr(e)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}}class ji extends Wi{_canReadInput(e){return this.isSupportedEBMLOfDocType(e,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}}class Ki extends Ui{_canReadInput(e){return u(this,null,function*(){let t=e._reader.requestSlice(0,10);if(t instanceof Promise&&(t=yield t),!t)return!1;let r=0,i=!1;for(;;){let t=e._reader.requestSlice(r,10);if(t instanceof Promise&&(t=yield t),!t)break;const n=di(t);if(!n)break;i=!0,r=t.filePos+n.size}const n=yield fi(e._reader,r,r+4096);if(!n)return!1;if(i)return!0;r=n.startPos+n.header.totalSize;const s=yield fi(e._reader,r,r+4);if(!s)return!1;const a=n.header,o=s.header;return a.channel===o.channel&&a.sampleRate===o.sampleRate})}_createDemuxer(e){return new pi(e)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}}class $i extends Ui{_canReadInput(e){return u(this,null,function*(){let t=e._reader.requestSlice(0,12);if(t instanceof Promise&&(t=yield t),!t)return!1;const r=Nn(t,4);if("RIFF"!==r&&"RIFX"!==r&&"RF64"!==r)return!1;t.skip(4);return"WAVE"===Nn(t,4)})}_createDemuxer(e){return new Fi(e)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}}class Qi extends Ui{_canReadInput(e){return u(this,null,function*(){let t=e._reader.requestSlice(0,4);return t instanceof Promise&&(t=yield t),!!t&&"OggS"===Nn(t,4)})}_createDemuxer(e){return new Pi(e)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}}class Gi extends Ui{_canReadInput(e){return u(this,null,function*(){let t=e._reader.requestSlice(0,4);return t instanceof Promise&&(t=yield t),!!t&&"fLaC"===Nn(t,4)})}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(e){return new Oi(e)}}class Xi extends Ui{_canReadInput(e){return u(this,null,function*(){let t=e._reader.requestSliceRange(0,7,9);if(t instanceof Promise&&(t=yield t),!t)return!1;const r=Ri(t);if(!r)return!1;if(t=e._reader.requestSliceRange(r.frameLength,7,9),t instanceof Promise&&(t=yield t),!t)return!1;const i=Ri(t);return!!i&&(r.objectType===i.objectType&&r.samplingFrequencyIndex===i.samplingFrequencyIndex&&r.channelConfiguration===i.channelConfiguration)})}_createDemuxer(e){return new Ni(e)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}}const Yi=new qi,Ji=new Hi,Zi=new Wi,en=new ji,tn=new Ki,rn=new $i,nn=new Qi,sn=new Xi,an=[Yi,Ji,Zi,en,rn,nn,new Gi,tn,sn];class on{constructor(){this._disposed=!1,this._sizePromise=null,this.onread=null}getSizeOrNull(){return u(this,null,function*(){var e;if(this._disposed)throw new gn;return null!=(e=this._sizePromise)?e:this._sizePromise=Promise.resolve(this._retrieveSize())})}getSize(){return u(this,null,function*(){if(this._disposed)throw new gn;const e=yield this.getSizeOrNull();if(null===e)throw new Error("Cannot determine the size of an unsized source.");return e})}}class ln extends on{constructor(e,t={}){var r;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&&(!me(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");super(),this._readers=new WeakMap,this._blob=e,this._orchestrator=new fn({maxCacheSize:null!=(r=t.maxCacheSize)?r:8*o(2,20),maxWorkerCount:4,runWorker:this._runWorker.bind(this),prefetchProfile:mn.fileSystem})}_retrieveSize(){const e=this._blob.size;return this._orchestrator.fileSize=e,e}_read(e,t){return this._orchestrator.read(e,t)}_runWorker(e){return u(this,null,function*(){var t,r;let i=this._readers.get(e);if(void 0===i){if("stream"in this._blob&&!ie()){i=this._blob.slice(e.currentPos).stream().getReader()}else i=null;this._readers.set(e,i)}for(;e.currentPos<e.targetPos&&!e.aborted;)if(i){const{done:r,value:n}=yield i.read();if(r)throw this._orchestrator.forgetWorker(e),new Error("Blob reader stopped unexpectedly before all requested data was read.");if(e.aborted)break;null==(t=this.onread)||t.call(this,e.currentPos,e.currentPos+n.length),this._orchestrator.supplyWorkerData(e,n)}else{const t=yield this._blob.slice(e.currentPos,e.targetPos).arrayBuffer();if(e.aborted)break;null==(r=this.onread)||r.call(this,e.currentPos,e.currentPos+t.byteLength),this._orchestrator.supplyWorkerData(e,new Uint8Array(t))}e.running=!1,e.aborted&&(yield null==i?void 0:i.cancel())})}_dispose(){this._orchestrator.dispose()}}const cn=.5*o(2,20),un=(e,t,r)=>{if(t instanceof Error&&(t.message.includes("Failed to fetch")||t.message.includes("Load failed")||t.message.includes("NetworkError when attempting to fetch resource"))){let e=null;try{"undefined"!==typeof window&&"undefined"!==typeof window.location&&(e=new URL(r instanceof Request?r.url:r,window.location.href).origin)}catch(i){}if(("undefined"===typeof navigator||"boolean"!==typeof navigator.onLine||navigator.onLine)&&null!==e&&e!==window.location.origin)return console.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(o(2,e-2),16)};class dn extends on{constructor(e,t={}){var r,i;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&&(!me(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(void 0!==t.fetchFn&&"function"!==typeof t.fetchFn)throw new TypeError("options.fetchFn, when provided, must be a function.");super(),this._existingResponses=new WeakMap,this._url=e,this._options=t,this._getRetryDelay=null!=(r=t.getRetryDelay)?r:un,this._orchestrator=new fn({maxCacheSize:null!=(i=t.maxCacheSize)?i:64*o(2,20),maxWorkerCount:2,runWorker:this._runWorker.bind(this),prefetchProfile:mn.network})}_retrieveSize(){return u(this,null,function*(){var e,t;const r=new AbortController,i=yield ee(null!=(e=this._options.fetchFn)?e:fetch,this._url,J(null!=(t=this._options.requestInit)?t:{},{headers:{Range:"bytes=0-"},signal:r.signal}),this._getRetryDelay,()=>this._disposed);if(!i.ok)throw new Error(`Error fetching ${String(this._url)}: ${i.status} ${i.statusText}`);let n,s;if(206===i.status)s=this._getTotalLengthFromRangeResponse(i),n=this._orchestrator.createWorker(0,Math.min(s,cn));else{const e=i.headers.get("Content-Length");if(!e)throw new Error(`HTTP response (status ${i.status}) must surface Content-Length header.`);s=Number(e),n=this._orchestrator.createWorker(0,s),this._orchestrator.options.maxCacheSize=1/0,console.warn("HTTP server did not respond with 206 Partial Content, meaning the entire remote resource now has to be downloaded. For efficient media file streaming across a network, please make sure your server supports range requests.")}return this._orchestrator.fileSize=s,this._existingResponses.set(n,{response:i,abortController:r}),this._orchestrator.runWorker(n),s})}_read(e,t){return this._orchestrator.read(e,t)}_runWorker(e){return u(this,null,function*(){for(var t,r,i;;){const s=this._existingResponses.get(e);this._existingResponses.delete(e);let a=null==s?void 0:s.abortController,o=null==s?void 0:s.response;if(a||(a=new AbortController,o=yield ee(null!=(t=this._options.fetchFn)?t:fetch,this._url,J(null!=(r=this._options.requestInit)?r:{},{headers:{Range:`bytes=${e.currentPos}-`},signal:a.signal}),this._getRetryDelay,()=>this._disposed)),p(o),!o.ok)throw new Error(`Error fetching ${String(this._url)}: ${o.status} ${o.statusText}`);if(e.currentPos>0&&206!==o.status)throw new Error("HTTP server did not respond with 206 Partial Content to a range request. To enable efficient media file streaming across a network, please make sure your server supports range requests.");if(!o.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");const l=o.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted)return a.abort(),void(e.running=!1);let t;try{t=yield l.read()}catch(n){if(this._disposed)throw n;const e=this._getRetryDelay(1,n,this._url);if(null!==e){console.error("Error while reading response stream. Attempting to resume.",n),yield new Promise(t=>setTimeout(t,1e3*e));break}throw n}if(e.aborted)continue;const{done:r,value:s}=t;if(r){if(e.currentPos>=e.targetPos)return this._orchestrator.forgetWorker(e),void(e.running=!1);break}null==(i=this.onread)||i.call(this,e.currentPos,e.currentPos+s.length),this._orchestrator.supplyWorkerData(e,s)}}})}_getTotalLengthFromRangeResponse(e){const t=e.headers.get("Content-Range");if(t){const e=/\/(\d+)/.exec(t);if(e)return Number(e[1])}const r=e.headers.get("Content-Length");if(r)return Number(r);throw new Error("Partial HTTP response (status 206) must surface either Content-Range or Content-Length header.")}_dispose(){this._orchestrator.dispose()}}class hn extends on{constructor(e,t={}){var r;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.maxCacheSize&&(!me(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._stream=e,this._maxCacheSize=null!=(r=t.maxCacheSize)?r:16*o(2,20)}_retrieveSize(){return this._endIndex}_read(e,t){if(null!==this._endIndex&&t>this._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,t);const r=N(this._cache,e,e=>e.start),i=-1!==r?this._cache[r]:null;if(i&&i.start<=e&&t<=i.end)return{bytes:i.bytes,view:i.view,offset:i.start};let n=e;const s=new Uint8Array(t-e);if(-1!==r)for(let c=r;c<this._cache.length;c++){const r=this._cache[c];if(r.start>=t)break;const i=Math.max(e,r.start);i>n&&this._throwDueToCacheMiss();const a=Math.min(t,r.end);i<a&&(s.set(r.bytes.subarray(i-r.start,a-r.start),i-e),n=a)}if(n===t)return{bytes:s,view:v(s),offset:e};this._currentIndex>n&&this._throwDueToCacheMiss();const{promise:a,resolve:o,reject:l}=O();return this._pendingSlices.push({start:e,end:t,bytes:s,resolve:o,reject:l}),this._targetIndex=Math.max(this._targetIndex,t),this._pulling||(this._pulling=!0,this._pull().catch(e=>{if(this._pulling=!1,!(this._pendingSlices.length>0))throw e;this._pendingSlices.forEach(t=>t.reject(e)),this._pendingSlices.length=0})),a}_throwDueToCacheMiss(){throw new Error("Read is before the cached region. With ReadableStreamSource, you must access the data more sequentially or increase the size of its cache.")}_pull(){return u(this,null,function*(){for(null!=this._reader||(this._reader=this._stream.getReader());this._currentIndex<this._targetIndex&&!this._disposed;){const{done:e,value:t}=yield this._reader.read();if(e){for(const e of this._pendingSlices)e.resolve(null);this._pendingSlices.length=0,this._endIndex=this._currentIndex;break}const r=this._currentIndex,i=this._currentIndex+t.byteLength;for(let n=0;n<this._pendingSlices.length;n++){const e=this._pendingSlices[n],s=Math.max(r,e.start),a=Math.min(i,e.end);s<a&&(e.bytes.set(t.subarray(s-r,a-r),s-e.start),a===e.end&&(e.resolve({bytes:e.bytes,view:v(e.bytes),offset:e.start}),this._pendingSlices.splice(n,1),n--))}for(this._cache.push({start:r,end:i,bytes:t,view:v(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(){this._pendingSlices.length=0,this._cache.length=0}}const mn={fileSystem:(e,t)=>{const r=o(2,16);return{start:e=Math.floor((e-r)/r)*r,end:t=Math.ceil((t+r)/r)*r}},network:(e,t,r)=>{const i=o(2,16);e=Math.max(0,Math.floor((e-i)/i)*i);for(const n of r){const r=8*o(2,20),i=Math.max((n.startPos+n.targetPos)/2,n.targetPos-r);if(ue(e,t,i,n.targetPos)){const e=n.targetPos-n.startPos,i=Math.ceil((e+1)/r)*r,s=o(2,Math.ceil(Math.log2(e+1))),a=Math.min(s,i);t=Math.max(t,n.startPos+a)}}return{start:e,end:t=Math.max(t,e+cn)}}};class fn{constructor(e){this.options=e,this.fileSize=null,this.nextAge=0,this.workers=[],this.cache=[],this.currentCacheSize=0,this.disposed=!1}read(e,t){p(null!==this.fileSize);const r=this.options.prefetchProfile(e,t,this.workers),i=Math.max(r.start,0),n=Math.min(r.end,this.fileSize);p(i<=e&&t<=n);let s=null;const a=N(this.cache,e,e=>e.start),l=-1!==a?this.cache[a]:null;l&&l.start<=e&&t<=l.end&&(l.age=this.nextAge++,s={bytes:l.bytes,view:l.view,offset:l.start});const c=N(this.cache,i,e=>e.start),u=s?null:new Uint8Array(t-e);let d=0,h=i;const m=[];if(-1!==c){for(let r=c;r<this.cache.length;r++){const s=this.cache[r];if(s.start>=n)break;if(s.end<=i)continue;const a=Math.max(i,s.start),o=Math.min(n,s.end);if(p(a<=o),h<a&&m.push({start:h,end:a}),h=o,u){const r=Math.max(e,s.start),i=Math.min(t,s.end);if(r<i){const t=r-e;u.set(s.bytes.subarray(r-s.start,i-s.start),t),t===d&&(d=i-e)}}s.age=this.nextAge++}h<n&&m.push({start:h,end:n})}else m.push({start:i,end:n});if(u&&d>=u.length&&(s={bytes:u,view:v(u),offset:e}),0===m.length)return p(s),s;const{promise:f,resolve:g,reject:k}=O(),b=[];for(const o of m){const r=Math.max(e,o.start),i=Math.min(t,o.end);r===o.start&&i===o.end?b.push(o):r<i&&b.push({start:r,end:i})}for(const p of m){const t=u&&{start:e,bytes:u,holes:b,resolve:g,reject:k};let r=!1;for(const e of this.workers){const i=o(2,17);if(ue(p.start-i,p.start,e.currentPos,e.targetPos)){e.targetPos=Math.max(e.targetPos,p.end),r=!0,t&&!e.pendingSlices.includes(t)&&e.pendingSlices.push(t),e.running||this.runWorker(e);break}}if(!r){const e=this.createWorker(p.start,p.end);t&&(e.pendingSlices=[t]),this.runWorker(e)}}return s||(p(u),s=f.then(t=>({bytes:t,view:v(t),offset:e}))),s}createWorker(e,t){const r={startPos:e,currentPos:e,targetPos:t,running:!1,aborted:this.disposed,pendingSlices:[],age:this.nextAge++};for(this.workers.push(r);this.workers.length>this.options.maxWorkerCount;){let e=0,t=this.workers[0];for(let r=1;r<this.workers.length;r++){const i=this.workers[r];i.age<t.age&&(e=r,t=i)}if(t.running&&t.pendingSlices.length>0)break;t.aborted=!0,this.workers.splice(e,1)}return r}runWorker(e){p(!e.running),p(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))throw t;e.pendingSlices.forEach(e=>e.reject(t)),e.pendingSlices.length=0})}supplyWorkerData(e,t){p(!e.aborted);const r=e.currentPos,i=r+t.length;this.insertIntoCache({start:r,end:i,bytes:t,view:v(t),age:this.nextAge++}),e.currentPos+=t.length,e.targetPos=Math.max(e.targetPos,e.currentPos);for(let n=0;n<e.pendingSlices.length;n++){const s=e.pendingSlices[n],a=Math.max(r,s.start),o=Math.min(i,s.start+s.bytes.length);a<o&&s.bytes.set(t.subarray(a-r,o-r),a-s.start);for(let e=0;e<s.holes.length;e++){const t=s.holes[e];r<=t.start&&i>t.start&&(t.start=i),t.end<=t.start&&(s.holes.splice(e,1),e--)}0===s.holes.length&&(s.resolve(s.bytes),e.pendingSlices.splice(n,1),n--)}for(let n=0;n<this.workers.length;n++){const t=this.workers[n];e===t||t.running||ue(r,i,t.currentPos,t.targetPos)&&(this.workers.splice(n,1),n--)}}forgetWorker(e){const t=this.workers.indexOf(e);p(-1!==t),this.workers.splice(t,1)}insertIntoCache(e){if(0===this.options.maxCacheSize)return;let t=N(this.cache,e.start,e=>e.start)+1;if(t>0){const r=this.cache[t-1];if(r.end>=e.end)return;if(r.end>e.start){const i=new Uint8Array(e.end-r.start);i.set(r.bytes,0),i.set(e.bytes,e.start-r.start),this.currentCacheSize+=e.end-r.end,r.bytes=i,r.view=v(i),r.end=e.end,t--,e=r}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 r=t+1;r<this.cache.length;r++){const t=this.cache[r];if(e.end<=t.start)break;if(e.end>=t.end){this.cache.splice(r,1),this.currentCacheSize-=t.bytes.length,r--;continue}const i=new Uint8Array(t.end-e.start);i.set(e.bytes,0),i.set(t.bytes,t.start-e.start),this.currentCacheSize-=e.end-t.start,e.bytes=i,e.view=v(i),e.end=t.end,this.cache.splice(r,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let e=0,t=this.cache[0];for(let r=1;r<this.cache.length;r++){const i=this.cache[r];i.age<t.age&&(e=r,t=i)}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)e.aborted=!0;this.workers.length=0,this.cache.length=0,this.disposed=!0}}he();class pn{get disposed(){return this._disposed}constructor(e){if(this._demuxerPromise=null,this._format=null,this._disposed=!1,!e||"object"!==typeof e)throw new TypeError("options must be an object.");if(!Array.isArray(e.formats)||e.formats.some(e=>!(e instanceof Ui)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(e.source instanceof on))throw new TypeError("options.source must be a Source.");if(e.source._disposed)throw new Error("options.source must not be disposed.");this._formats=e.formats,this._source=e.source,this._reader=new kn(e.source)}_getDemuxer(){var e;return null!=(e=this._demuxerPromise)?e:this._demuxerPromise=(()=>u(this,null,function*(){this._reader.fileSize=yield this._source.getSizeOrNull();for(const e of this._formats){if(yield e._canReadInput(this))return this._format=e,e._createDemuxer(this)}throw new Error("Input has an unsupported or unrecognizable format.")}))()}get source(){return this._source}getFormat(){return u(this,null,function*(){return yield this._getDemuxer(),p(this._format),this._format})}computeDuration(){return u(this,null,function*(){return(yield this._getDemuxer()).computeDuration()})}getTracks(){return u(this,null,function*(){return(yield this._getDemuxer()).getTracks()})}getVideoTracks(){return u(this,null,function*(){return(yield this.getTracks()).filter(e=>e.isVideoTrack())})}getAudioTracks(){return u(this,null,function*(){return(yield this.getTracks()).filter(e=>e.isAudioTrack())})}getPrimaryVideoTrack(){return u(this,null,function*(){var e;return null!=(e=(yield this.getTracks()).find(e=>e.isVideoTrack()))?e:null})}getPrimaryAudioTrack(){return u(this,null,function*(){var e;return null!=(e=(yield this.getTracks()).find(e=>e.isAudioTrack()))?e:null})}getMimeType(){return u(this,null,function*(){return(yield this._getDemuxer()).getMimeType()})}getMetadataTags(){return u(this,null,function*(){return(yield this._getDemuxer()).getMetadataTags()})}dispose(){this._disposed||(this._disposed=!0,this._source._disposed=!0,this._source._dispose())}[Symbol.dispose](){this.dispose()}}class gn extends Error{constructor(e="Input has been disposed."){super(e),this.name="InputDisposedError"}}class kn{constructor(e){this.source=e}requestSlice(e,t){if(this.source._disposed)throw new gn;if(null!==this.fileSize&&e+t>this.fileSize)return null;const r=e+t,i=this.source._read(e,r);return i instanceof Promise?i.then(t=>t?new bn(t.bytes,t.view,t.offset,e,r):null):i?new bn(i.bytes,i.view,i.offset,e,r):null}requestSliceRange(e,t,r){if(this.source._disposed)throw new gn;if(null!==this.fileSize)return this.requestSlice(e,K(this.fileSize-e,t,r));{const i=this.requestSlice(e,r),n=i=>{if(i)return i;const n=i=>(p(null!==i),this.requestSlice(e,K(i-e,t,r))),s=this.source._retrieveSize();return s instanceof Promise?s.then(n):n(s)};return i instanceof Promise?i.then(n):n(i)}}}class bn{constructor(e,t,r,i,n){this.bytes=e,this.view=t,this.offset=r,this.start=i,this.end=n,this.bufferPos=i-r}static tempFromBytes(e){return new bn(e,v(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 bn(this.bytes,this.view,this.offset,e,e+t)}}const yn=(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.`)},Tn=(e,t)=>{yn(e,t);const r=e.bytes.subarray(e.bufferPos,e.bufferPos+t);return e.bufferPos+=t,r},Sn=e=>(yn(e,1),e.view.getUint8(e.bufferPos++)),vn=(e,t)=>{yn(e,2);const r=e.view.getUint16(e.bufferPos,t);return e.bufferPos+=2,r},wn=e=>{yn(e,2);const t=e.view.getUint16(e.bufferPos,!1);return e.bufferPos+=2,t},In=e=>{yn(e,3);const t=H(e.view,e.bufferPos,!1);return e.bufferPos+=3,t},Pn=e=>{yn(e,2);const t=e.view.getInt16(e.bufferPos,!1);return e.bufferPos+=2,t},xn=(e,t)=>{yn(e,4);const r=e.view.getUint32(e.bufferPos,t);return e.bufferPos+=4,r},Cn=e=>{yn(e,4);const t=e.view.getUint32(e.bufferPos,!1);return e.bufferPos+=4,t},_n=e=>{yn(e,4);const t=e.view.getUint32(e.bufferPos,!0);return e.bufferPos+=4,t},Bn=e=>{yn(e,4);const t=e.view.getInt32(e.bufferPos,!1);return e.bufferPos+=4,t},En=(e,t)=>{let r,i;return t?(r=xn(e,!0),i=xn(e,!0)):(i=xn(e,!1),r=xn(e,!1)),4294967296*i+r},Fn=e=>4294967296*Cn(e)+Cn(e),Dn=e=>4294967296*Bn(e)+Cn(e),An=e=>{const t=_n(e),r=(e=>{yn(e,4);const t=e.view.getInt32(e.bufferPos,!0);return e.bufferPos+=4,t})(e);return 4294967296*r+t},Rn=e=>{yn(e,4);const t=e.view.getFloat32(e.bufferPos,!1);return e.bufferPos+=4,t},Mn=e=>{yn(e,8);const t=e.view.getFloat64(e.bufferPos,!1);return e.bufferPos+=8,t},Nn=(e,t)=>{yn(e,t);let r="";for(let i=0;i<t;i++)r+=String.fromCharCode(e.bytes[e.bufferPos++]);return r};class zn{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}normalizeSource(e){return"string"===typeof e?new dn(e):e instanceof Blob?new ln(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new hn(e):e}ensureAudioContext(e){if(this.audioContext)return;const t=window.AudioContext||window.webkitAudioContext;try{this.audioContext=new t({sampleRate:e})}catch(r){this.audioContext=new t}this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination),this.updateGain()}updateGain(){if(!this.gainNode)return;const e=this.muted?0:this.volume;this.gainNode.gain.value=e*e}stopQueuedNodes(){this.queuedNodes.forEach(e=>e.stop()),this.queuedNodes.clear()}stopIterator(){return u(this,null,function*(){var e;yield null==(e=this.audioIterator)?void 0:e.return(),this.audioIterator=null})}load(e,t){return u(this,null,function*(){const r=++this.asyncId;yield this.stopIterator(),this.stopQueuedNodes(),this.paused=!0,this.playbackTimeAtStart=0,this.audioContextStartTime=0;const i=this.normalizeSource(e);if(!i)return;if(this.input=new pn({source:i,formats:an}),this.duration=yield this.input.computeDuration(),r!==this.asyncId)return;const n=yield this.input.getPrimaryAudioTrack();return n&&null!==n.codec&&(yield n.canDecode())?(this.ensureAudioContext(n.sampleRate),this.audioSink=new $t(n),void(null==t||t())):(this.audioSink=null,this.ensureAudioContext(),void(null==t||t()))})}runIterator(e){return u(this,null,function*(){if(this.audioSink)for(yield this.stopIterator(),this.audioIterator=this.audioSink.buffers(this.currentTime);;){if(e!==this.asyncId||this.paused)return;const r=this.audioIterator.next(),i=setInterval(()=>{e!==this.asyncId||this.paused?clearInterval(i):"running"===this.audioContext.state&&this.audioContext.currentTime>=this.latestScheduledEndTime-.2&&(this.audioContext.suspend(),this.events.emit("waiting"))},50);let n;try{n=yield r}catch(t){console.error("Audio iterator error:",t);break}finally{clearInterval(i)}if(e!==this.asyncId||this.paused)return;if("suspended"===this.audioContext.state&&(yield this.audioContext.resume(),this.events.emit("canplay"),this.events.emit("playing")),n.done)break;const{buffer:s,timestamp:a}=n.value,o=this.audioContext.createBufferSource();o.buffer=s,o.connect(this.gainNode),o.playbackRate.value=this.playbackRate;const l=this.audioContextStartTime+(a-this.playbackTimeAtStart)/this.playbackRate,c=l+s.duration/this.playbackRate;c>this.latestScheduledEndTime&&(this.latestScheduledEndTime=c),l>=this.audioContext.currentTime?o.start(l):o.start(this.audioContext.currentTime,(this.audioContext.currentTime-l)*this.playbackRate),this.queuedNodes.add(o),o.onended=()=>this.queuedNodes.delete(o)}})}play(){return u(this,null,function*(){if(!this.paused)return;this.audioContext||this.ensureAudioContext(),"suspended"===this.audioContext.state&&(yield this.audioContext.resume()),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.audioContextStartTime,this.paused=!1;const e=++this.asyncId;this.runIterator(e)})}pause(){this.paused||(this.playbackTimeAtStart=this.currentTime,this.paused=!0,this.stopIterator(),this.stopQueuedNodes())}seek(e){return u(this,null,function*(){this.playbackTimeAtStart=Math.max(0,e),this.audioContextStartTime=this.audioContext.currentTime,this.latestScheduledEndTime=this.audioContextStartTime;const t=++this.asyncId;this.paused||this.runIterator(t)})}setVolume(e,t){this.volume=e,this.muted=t,this.updateGain()}setPlaybackRate(e){if(e!==this.playbackRate&&(this.paused||(this.playbackTimeAtStart=this.currentTime,this.audioContextStartTime=this.audioContext.currentTime),this.playbackRate=e,!this.paused)){const e=++this.asyncId;this.runIterator(e)}}destroy(){var e;this.asyncId++,this.pause(),null==(e=this.audioContext)||e.close(),this.audioContext=null,this.input=null,this.audioSink=null}}class On{constructor({canvas:e,ctx:t,events:r,timeupdateInterval:i=250,avSyncTolerance:n=.12,dropLateFrames:s=!1,poster:a="",preflightRange:o=!1}){this.canvas=e,this.ctx=t,this.events=r,this.timeupdateInterval=i,this.avSyncTolerance=n,this.dropLateFrames=s,this.poster=a,this.preflightRange=o,this.input=null,this.videoSink=null,this.videoIterator=null,this.nextFrame=null,this.rafId=0,this.asyncId=0,this.width=0,this.height=0,this.duration=Number.NaN,this.audioClock=null,this.lastTimeUpdate=0,this.stalled=!1,this.playbackRate=1,this.posterDrawn=!1,this.isFetching=!1}normalizeSource(e){return"string"===typeof e?new dn(e):e instanceof Blob?new ln(e):"undefined"!==typeof ReadableStream&&e instanceof ReadableStream?new hn(e):e}preflight(e){return u(this,null,function*(){if(!this.preflightRange||"string"!==typeof e)return!0;try{const t=(yield fetch(e,{method:"HEAD"})).headers.get("accept-ranges");return!(!t||"none"===t)||(this.events.emit("error",new Event("RangeNotSupported")),!1)}catch(t){return console.warn("Preflight check failed:",t),!0}})}drawPoster(){if(!this.poster||this.posterDrawn)return;const e=new Image;e.onload=()=>{this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.canvas.width=e.naturalWidth||this.canvas.width,this.canvas.height=e.naturalHeight||this.canvas.height,this.ctx.drawImage(e,0,0,this.canvas.width,this.canvas.height),this.posterDrawn=!0},e.src=this.poster}stopIterator(){return u(this,null,function*(){var e;yield null==(e=this.videoIterator)?void 0:e.return(),this.videoIterator=null})}clear(){this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height)}load(e,t){return u(this,null,function*(){const r=++this.asyncId;if(yield this.stopIterator(),this.clear(),this.posterDrawn=!1,!(yield this.preflight(e)))return;const i=this.normalizeSource(e);if(!i)return void this.drawPoster();if(this.input=new pn({source:i,formats:an}),this.duration=yield this.input.computeDuration(),r!==this.asyncId)return;const n=yield this.input.getPrimaryVideoTrack();if(!n)return this.handleNoVideoTrack(),void(null==t||t());if(null===n.codec||!(yield n.canDecode()))return this.handleNoVideoTrack(),void(null==t||t());const s=yield n.canBeTransparent();this.videoSink=new Ht(n,{poolSize:2,fit:"contain",alpha:s}),this.width=n.displayWidth,this.height=n.displayHeight,this.canvas.width=this.width,this.canvas.height=this.height,null==t||t(),yield this.resetIterator(0)})}handleNoVideoTrack(){this.videoSink=null,this.width=0,this.height=0,this.canvas.width=0,this.canvas.height=0,this.clear(),this.drawPoster()}resetIterator(e){return u(this,null,function*(){var t,r;if(yield this.stopIterator(),!this.videoSink)return;this.videoIterator=this.videoSink.canvases(e);const i=null!=(t=(yield this.videoIterator.next()).value)?t:null,n=null!=(r=(yield this.videoIterator.next()).value)?r:null;this.nextFrame=n,i?(this.ctx.drawImage(i.canvas,0,0),this.events.emit("loadeddata")):this.drawPoster()})}updateNextFrame(e){return u(this,null,function*(){var t;if(this.videoIterator&&!this.isFetching){this.isFetching=!0;try{for(;;){const r=null!=(t=(yield this.videoIterator.next()).value)?t:null;if(!r||e!==this.asyncId)return;const i=this.audioClock.currentTime,n=this.dropLateFrames?Math.max(.06,this.avSyncTolerance/Math.max(1,this.playbackRate)):0;if(!(this.dropLateFrames&&r.timestamp<i-n)){if(!(r.timestamp<=i+n))return void(this.nextFrame=r);if(this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height),this.ctx.drawImage(r.canvas,0,0),!this.dropLateFrames&&r.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)}seek(e){return u(this,null,function*(){this.asyncId++,yield this.resetIterator(e)})}setPlaybackRate(e){this.playbackRate=Math.max(.1,Number(e)||1)}destroy(){this.asyncId++,this.stop(),this.stopIterator(),this.posterDrawn=!1,this.input=null,this.videoSink=null}}class Ln{constructor({canvas:e,ctx:t,events:r,option:i={}}){var n,s,a,o,l,c;this.events=r,this.option=i,this.audio=new zn(r),this.video=new On({canvas:e,ctx:t,events:r,timeupdateInterval:null!=(n=i.timeupdateInterval)?n:250,avSyncTolerance:null!=(s=i.avSyncTolerance)?s:.12,dropLateFrames:null!=(a=i.dropLateFrames)&&a,poster:null!=(o=i.poster)?o:"",preflightRange:null!=(l=i.preflightRange)&&l}),this.paused=!0,this.ended=!1,this.readyState=0,this.networkState=0,this.error=null,this.seeking=!1,this.loadSeq=0,null==(c=r.addEventListener)||c.call(r,"ended",()=>{this.ended=!0,this.paused=!0})}load(e){return u(this,null,function*(){const t=++this.loadSeq;this.pause(),this.ended=!1,this.error=null,this.networkState=2,this.readyState=0,setTimeout(()=>this.events.emit("waiting"),0),setTimeout(()=>this.events.emit("loadstart"),0);const r=Number.isFinite(this.option.loadTimeout)?this.option.loadTimeout:0;try{yield Promise.race([this.performLoad(e,t),r>0?this.createTimeout(r):new Promise(()=>{})])}catch(i){if(t!==this.loadSeq)return;this.loadSeq++,this.error={code:4,message:i.message},this.networkState=3,this.events.emit("error")}})}performLoad(e,t){return u(this,null,function*(){let r=!1,i=!1;const n=()=>{r&&i&&(this.readyState=1,this.events.emit("loadedmetadata"),this.events.emit("durationchange"),this.events.emit("progress"))};try{if(yield Promise.all([this.video.load(e,()=>{t===this.loadSeq&&(r=!0,n())}),this.audio.load(e,()=>{t===this.loadSeq&&(i=!0,n())})]),t!==this.loadSeq)return;this.readyState=4,this.networkState=1,this.events.emit("loadeddata"),this.events.emit("canplay"),this.events.emit("canplaythrough"),this.events.emit("progress")}catch(s){if(t!==this.loadSeq)return;this.error={code:4,message:s.message},this.networkState=3,this.events.emit("error"),console.error("MediaBunny load error:",s)}})}createTimeout(e){return new Promise((t,r)=>{setTimeout(()=>r(new Error("Load timeout")),e)})}play(){return u(this,null,function*(){this.paused&&(this.ended&&(this.ended=!1,yield this.seek(0)),this.paused=!1,yield this.audio.play(),this.video.start(this.audio),this.events.emit("play"),this.events.emit("playing"))})}pause(){this.paused||(this.paused=!0,this.audio.pause(),this.video.stop(),this.events.emit("pause"))}seek(e){return u(this,null,function*(){const t=!this.paused;this.ended=!1,this.seeking=!0,this.events.emit("seeking"),this.events.emit("waiting"),this.pause(),yield Promise.all([this.audio.seek(e),this.video.seek(e)]),this.seeking=!1,this.events.emit("seeked"),t&&!this.ended&&(yield this.play())})}setVolume(e,t){this.audio.setVolume(e,t)}setPlaybackRate(e){this.audio.setPlaybackRate(e),this.video.setPlaybackRate(e)}destroy(){this.pause(),this.audio.destroy(),this.video.destroy()}get currentTime(){return this.audio.currentTime}get duration(){return this.audio.duration||this.video.duration}get videoWidth(){return this.video.width}get videoHeight(){return this.video.height}}class Un{constructor({art:e,canvas:t,ctx:r,option:i}){var n,s;this.art=e,this.canvas=t,this.option=i,this.events=new f,this.engine=new Ln({canvas:t,ctx:r,events:this.events,option:i}),this._src=null,this._volume=null!=(n=i.volume)?n:.7,this._muted=!!i.muted,this._playbackRate=1,this.engine.setVolume(this._volume,this._muted),this.setupEventForwarding(),i.source?this.src=i.source:(null==(s=e.option)?void 0:s.url)&&(this.src=e.option.url)}setupEventForwarding(){const{events:e}=this.art.constructor.config;e.forEach(e=>{this.events.addEventListener(e,e=>{this.art.emit(`video:${e.type}`,e)})})}addEventListener(e,t){this.events.addEventListener(e,t)}removeEventListener(e,t){this.events.removeEventListener(e,t)}get src(){return this._src}set src(e){this._src=e,e&&this.engine.load(e)}get currentSrc(){return this._src}get currentTime(){return this.engine.currentTime}set currentTime(e){this.engine.seek(Number(e)||0)}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){const r=this.engine.duration;return!r||Number.isNaN(r)||t<=0?{length:0,start:()=>0,end:()=>0}:{length:1,start:()=>e,end:()=>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){this._volume=function(e,t,r){return Math.max(t,Math.min(r,Number(e)||0))}(e,0,1),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)}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 requestAnimationFrame(t=>{e(t,{presentationTime:this.engine.currentTime,expectedDisplayTime:t+16.6,width:this.engine.videoWidth,height:this.engine.videoHeight,mediaTime:this.engine.currentTime,presentedFrames:0,processingDuration:0,captureTime:t,receiveTime:t,rtpTimestamp:0})})}cancelVideoFrameCallback(e){cancelAnimationFrame(e)}setAttribute(e,t){"src"===e?this.src=t:"autoplay"===e?this.autoplay=t:"loop"===e?this.loop=t:"muted"===e?this.muted=!0:this.canvas.setAttribute(e,t)}destroy(){this.engine.destroy()}}return function(e={}){return t=>{const{constructor:r}=t,{createElement:i}=r.utils,n=i("canvas"),s=n.getContext("2d"),a=new Un({art:t,canvas:n,ctx:s,option:e}),o={};for(const e in n)"function"===typeof n[e]&&(o[e]=n[e].bind(n));const l=new Set([...Object.getOwnPropertyNames(a),...Object.getOwnPropertyNames(Object.getPrototypeOf(a))]);for(const e of l)"constructor"!==e&&(e in n||Object.defineProperty(n,e,{get(){const t=a[e];return"function"===typeof t?t.bind(a):t},set(t){a[e]=t},configurable:!0,enumerable:!0}));for(const e in o)n[e]=(...t)=>o[e](...t);function c(){var e;(null==(e=t.template)?void 0:e.$player)&&!t.option.autoSize&&Object.assign(n.style,{width:"100%",height:"100%",objectFit:"contain"})}return t.on("resize",c),t.on("video:loadedmetadata",c),t.on("destroy",()=>{a.destroy()}),n}}});