/*!
 * Copyright (c) 2026-present, Vanilagy and contributors
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */
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new TypeError("Video chunk metadata decoder configuration must specify a valid codedHeight (positive integer).");if(i.decoderConfig.description!==void 0&&!hr(i.decoderConfig.description))throw new TypeError("Video chunk metadata decoder configuration description, when defined, must be an ArrayBuffer or an ArrayBuffer view.");if(i.decoderConfig.colorSpace!==void 0){let{colorSpace:t}=i.decoderConfig;if(typeof t!="object")throw new TypeError("Video chunk metadata decoder configuration colorSpace, when provided, must be an object.");let e=Object.keys(st);if(t.primaries!=null&&!e.includes(t.primaries))throw new TypeError(`Video chunk metadata decoder configuration colorSpace primaries, when defined, must be one of ${e.join(", ")}.`);let r=Object.keys(ot);if(t.transfer!=null&&!r.includes(t.transfer))throw new TypeError(`Video chunk metadata decoder configuration colorSpace transfer, when defined, must be one of ${r.join(", ")}.`);let 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if(i.decoderConfig.codec.startsWith("vp8")){if(i.decoderConfig.codec!=="vp8")throw new TypeError('Video chunk metadata decoder configuration codec string for VP8 must be "vp8".')}else if(i.decoderConfig.codec.startsWith("vp09")){if(!Mu.test(i.decoderConfig.codec))throw new TypeError('Video chunk metadata decoder configuration codec string for VP9 must be a valid VP9 codec string as specified in Section "Codecs Parameter String" of https://www.webmproject.org/vp9/mp4/.')}else if(i.decoderConfig.codec.startsWith("av01")&&!Ru.test(i.decoderConfig.codec))throw new TypeError('Video chunk metadata decoder configuration codec string for AV1 must be a valid AV1 codec string as specified in Section "Codecs Parameter String" of https://aomediacodec.github.io/av1-isobmff/.')},Bu=["mp4a","mp3","opus","vorbis","flac","ulaw","alaw","pcm","ac-3","ec-3"],Ae=i=>{if(!i)throw new TypeError("Audio chunk metadata must be provided.");if(typeof i!="object")throw new TypeError("Audio chunk metadata must be an 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t=i.substreams[0];p(t);let e=ai[t.acmod]+t.lfeon;if(t.numDepSub>0){let r=[2,2,1,1,2,2,2,1,1];for(let n=0;n<9;n++)t.chanLoc&1<<8-n&&(e+=r[n])}return e};var fe=class{constructor(t){this.input=t}};var ln=class{static supports(t,e){return!1}},mn=class{static supports(t,e){return!1}},fn=class{static supports(t,e){return!1}},pn=class{static supports(t,e){return!1}},Cr=[],Pr=[],tr=[],rr=[],Hu=i=>{if(i.prototype instanceof ln){let t=i;if(Cr.includes(t)){console.warn("Video decoder already registered.");return}Cr.push(t)}else if(i.prototype instanceof mn){let t=i;if(Pr.includes(t)){console.warn("Audio decoder already registered.");return}Pr.push(t)}else throw new TypeError("Decoder must be a CustomVideoDecoder or CustomAudioDecoder.")},qu=i=>{if(i.prototype instanceof fn){let t=i;if(tr.includes(t)){console.warn("Video encoder already registered.");return}tr.push(t)}else if(i.prototype instanceof pn){let t=i;if(rr.includes(t)){console.warn("Audio encoder already 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TypeError("sideData, when provided, must be an object.");if(o?.alpha!==void 0&&!(o.alpha instanceof Uint8Array))throw new TypeError("sideData.alpha, when provided, must be a Uint8Array.");if(o?.alphaByteLength!==void 0&&(!Number.isInteger(o.alphaByteLength)||o.alphaByteLength<0))throw new TypeError("sideData.alphaByteLength, when provided, must be a non-negative integer.");this.byteLength=s,this.sideData=o??{},this.sideData.alpha&&this.sideData.alphaByteLength===void 0&&(this.sideData.alphaByteLength=this.sideData.alpha.byteLength)}get isMetadataOnly(){return this.data===se}get microsecondTimestamp(){return Math.trunc(Ye*this.timestamp)}get microsecondDuration(){return Math.trunc(Ye*this.duration)}toEncodedVideoChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if(typeof EncodedVideoChunk>"u")throw new Error("Your browser does not support EncodedVideoChunk.");return new EncodedVideoChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}alphaToEncodedVideoChunk(t=this.type){if(!this.sideData.alpha)throw new TypeError("This packet does not contain alpha side data.");if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to a video chunk.");if(typeof EncodedVideoChunk>"u")throw new Error("Your browser does not support EncodedVideoChunk.");return new EncodedVideoChunk({data:this.sideData.alpha,type:t,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}toEncodedAudioChunk(){if(this.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be converted to an audio chunk.");if(typeof EncodedAudioChunk>"u")throw new Error("Your browser does not support EncodedAudioChunk.");return new EncodedAudioChunk({data:this.data,type:this.type,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration})}static fromEncodedChunk(t,e){if(!(t instanceof EncodedVideoChunk||t instanceof EncodedAudioChunk))throw new TypeError("chunk must be an EncodedVideoChunk or EncodedAudioChunk.");let r=new Uint8Array(t.byteLength);return t.copyTo(r),new i(r,t.type,t.timestamp/1e6,(t.duration??0)/1e6,void 0,void 0,e)}clone(t){if(t!==void 0&&(typeof t!="object"||t===null))throw new TypeError("options, when provided, must be an object.");if(t?.data!==void 0&&!(t.data instanceof Uint8Array))throw new TypeError("options.data, when provided, must be a Uint8Array.");if(t?.type!==void 0&&t.type!=="key"&&t.type!=="delta")throw new TypeError('options.type, when provided, must be either "key" or "delta".');if(t?.timestamp!==void 0&&!Number.isFinite(t.timestamp))throw new TypeError("options.timestamp, when provided, must be a number.");if(t?.duration!==void 0&&!Number.isFinite(t.duration))throw new TypeError("options.duration, when provided, must be a number.");if(t?.sequenceNumber!==void 0&&!Number.isFinite(t.sequenceNumber))throw new TypeError("options.sequenceNumber, when provided, must be a number.");if(t?.sideData!==void 0&&(typeof t.sideData!="object"||t.sideData===null))throw new TypeError("options.sideData, when provided, must be an object.");return new i(t?.data??this.data,t?.type??this.type,t?.timestamp??this.timestamp,t?.duration??this.duration,t?.sequenceNumber??this.sequenceNumber,this.byteLength,t?.sideData??this.sideData)}};var Ko=i=>{let r=i,n=4096,a=0,s=12,o=0;for(r<0&&(r=-r,a=128),r+=33,r>8191&&(r=8191);(r&n)!==n&&s>=5;)n>>=1,s--;return o=r>>s-4&15,~(a|s-5<<4|o)&255},Go=i=>{let e=0,r=0,n=~i;n&128&&(n&=-129,e=-1),r=((n&240)>>4)+5;let a=(1<<r|(n&15)<<r-4|1<<r-5)-33;return e===0?a:-a},Qo=i=>{let e=2048,r=0,n=11,a=0,s=i;for(s<0&&(s=-s,r=128),s>4095&&(s=4095);(s&e)!==e&&n>=5;)e>>=1,n--;return a=s>>(n===4?1:n-4)&15,(r|n-4<<4|a)^85},$o=i=>{let t=0,e=0,r=i^85;r&128&&(r&=-129,t=-1),e=((r&240)>>4)+4;let n=0;return e!==4?n=1<<e|(r&15)<<e-4|1<<e-5:n=r<<1|1,t===0?n:-n};Ki();var Xo=-1/0,Yo=-1/0,ui=null;typeof FinalizationRegistry<"u"&&(ui=new FinalizationRegistry(i=>{let t=Date.now();i.type==="video"?(t-Xo>=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."),Xo=t),typeof VideoFrame<"u"&&i.data instanceof VideoFrame&&i.data.close()):(t-Yo>=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."),Yo=t),typeof AudioData<"u"&&i.data instanceof AudioData&&i.data.close())}));var Qa=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],ju=new Set(Qa),pe=class i{constructor(t,e){this._closed=!1;if(t instanceof ArrayBuffer||typeof SharedArrayBuffer<"u"&&t instanceof SharedArrayBuffer||ArrayBuffer.isView(t)){if(!e||typeof e!="object")throw new TypeError("init must be an object.");if(e.format===void 0||!ju.has(e.format))throw new TypeError("init.format must be one of: "+Qa.join(", "));if(!Number.isInteger(e.codedWidth)||e.codedWidth<=0)throw new TypeError("init.codedWidth must be a positive integer.");if(!Number.isInteger(e.codedHeight)||e.codedHeight<=0)throw new TypeError("init.codedHeight must be a positive integer.");if(e.rotation!==void 0&&![0,90,180,270].includes(e.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(e.timestamp))throw new TypeError("init.timestamp must be a number.");if(e.duration!==void 0&&(!Number.isFinite(e.duration)||e.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");this._data=H(t).slice(),this._layout=e.layout??Ku(e.format,e.codedWidth,e.codedHeight),this.format=e.format,this.codedWidth=e.codedWidth,this.codedHeight=e.codedHeight,this.rotation=e.rotation??0,this.timestamp=e.timestamp,this.duration=e.duration??0,this.colorSpace=new Ir(e.colorSpace)}else if(typeof VideoFrame<"u"&&t instanceof VideoFrame){if(e?.rotation!==void 0&&![0,90,180,270].includes(e.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(e?.timestamp!==void 0&&!Number.isFinite(e?.timestamp))throw new TypeError("init.timestamp, when provided, must be a number.");if(e?.duration!==void 0&&(!Number.isFinite(e.duration)||e.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");this._data=t,this._layout=null,this.format=t.format,this.codedWidth=t.displayWidth,this.codedHeight=t.displayHeight,this.rotation=e?.rotation??0,this.timestamp=e?.timestamp??t.timestamp/1e6,this.duration=e?.duration??(t.duration??0)/1e6,this.colorSpace=new Ir(t.colorSpace)}else if(typeof HTMLImageElement<"u"&&t instanceof HTMLImageElement||typeof SVGImageElement<"u"&&t instanceof SVGImageElement||typeof ImageBitmap<"u"&&t instanceof ImageBitmap||typeof HTMLVideoElement<"u"&&t instanceof HTMLVideoElement||typeof HTMLCanvasElement<"u"&&t instanceof HTMLCanvasElement||typeof OffscreenCanvas<"u"&&t instanceof OffscreenCanvas){if(!e||typeof e!="object")throw new TypeError("init must be an object.");if(e.rotation!==void 0&&![0,90,180,270].includes(e.rotation))throw new TypeError("init.rotation, when provided, must be 0, 90, 180, or 270.");if(!Number.isFinite(e.timestamp))throw new TypeError("init.timestamp must be a number.");if(e.duration!==void 0&&(!Number.isFinite(e.duration)||e.duration<0))throw new TypeError("init.duration, when provided, must be a non-negative number.");if(typeof VideoFrame<"u")return new i(new VideoFrame(t,{timestamp:Math.trunc(e.timestamp*Ye),duration:Math.trunc((e.duration??0)*Ye)||void 0}),e);let r=0,n=0;if("naturalWidth"in t?(r=t.naturalWidth,n=t.naturalHeight):"videoWidth"in t?(r=t.videoWidth,n=t.videoHeight):"width"in t&&(r=Number(t.width),n=Number(t.height)),!r||!n)throw new TypeError("Could not determine dimensions.");let a=new OffscreenCanvas(r,n),s=a.getContext("2d",{alpha:Ze(),willReadFrequently:!0});p(s),s.drawImage(t,0,0),this._data=a,this._layout=null,this.format="RGBX",this.codedWidth=r,this.codedHeight=n,this.rotation=e.rotation??0,this.timestamp=e.timestamp,this.duration=e.duration??0,this.colorSpace=new Ir({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else throw new TypeError("Invalid data type: Must be a BufferSource or CanvasImageSource.");ui?.register(this,{type:"video",data:this._data},this)}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(Ye*this.timestamp)}get microsecondDuration(){return Math.trunc(Ye*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}clone(){if(this._closed)throw new Error("VideoSample is closed.");return p(this._data!==null),ir(this._data)?new i(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation}):this._data instanceof Uint8Array?(p(this._layout),new i(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 i(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||(ui?.unregister(this),ir(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(t={}){if(Zo(t),this._closed)throw new Error("VideoSample is closed.");if(this.format===null)throw new Error("Cannot get allocation size when format is null. Sorry!");if(p(this._data!==null),!ir(this._data)&&(t.colorSpace||t.format&&t.format!==this.format||t.layout||t.rect)){let e=this.toVideoFrame(),r=e.allocationSize(t);return e.close(),r}return ir(this._data)?this._data.allocationSize(t):this._data instanceof Uint8Array?this._data.byteLength:this.codedWidth*this.codedHeight*4}async copyTo(t,e={}){if(!hr(t))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(Zo(e),this._closed)throw new Error("VideoSample is closed.");if(this.format===null)throw new Error("Cannot copy video sample data when format is null. Sorry!");if(p(this._data!==null),!ir(this._data)&&(e.colorSpace||e.format&&e.format!==this.format||e.layout||e.rect)){let r=this.toVideoFrame(),n=await r.copyTo(t,e);return r.close(),n}if(ir(this._data))return this._data.copyTo(t,e);if(this._data instanceof Uint8Array)return p(this._layout),H(t).set(this._data),this._layout;{let n=this._data.getContext("2d");p(n);let a=n.getImageData(0,0,this.codedWidth,this.codedHeight);return H(t).set(a.data),[{offset:0,stride:4*this.codedWidth}]}}toVideoFrame(){if(this._closed)throw new Error("VideoSample is closed.");return p(this._data!==null),ir(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(t,e,r,n,a,s,o,c,u){let d=0,l=0,m=this.displayWidth,f=this.displayHeight,g=0,b=0,h=this.displayWidth,y=this.displayHeight;if(s!==void 0?(d=e,l=r,m=n,f=a,g=s,b=o,c!==void 0?(h=c,y=u):(h=m,y=f)):(g=e,b=r,n!==void 0&&(h=n,y=a)),!(typeof CanvasRenderingContext2D<"u"&&t instanceof CanvasRenderingContext2D||typeof OffscreenCanvasRenderingContext2D<"u"&&t instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!Number.isFinite(d))throw new TypeError("sx must be a number.");if(!Number.isFinite(l))throw new TypeError("sy must be a number.");if(!Number.isFinite(m)||m<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(f)||f<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(g))throw new TypeError("dx must be a number.");if(!Number.isFinite(b))throw new TypeError("dy must be a number.");if(!Number.isFinite(h)||h<0)throw new TypeError("dWidth must be a non-negative number.");if(!Number.isFinite(y)||y<0)throw new TypeError("dHeight must be a non-negative number.");if(this._closed)throw new Error("VideoSample is closed.");({sx:d,sy:l,sWidth:m,sHeight:f}=this._rotateSourceRegion(d,l,m,f,this.rotation));let k=this.toCanvasImageSource();t.save();let w=g+h/2,S=b+y/2;t.translate(w,S),t.rotate(this.rotation*Math.PI/180);let T=this.rotation%180===0?1:h/y;t.scale(1/T,T),t.drawImage(k,d,l,m,f,-h/2,-y/2,h,y),t.restore()}drawWithFit(t,e){if(!(typeof CanvasRenderingContext2D<"u"&&t instanceof CanvasRenderingContext2D||typeof OffscreenCanvasRenderingContext2D<"u"&&t instanceof OffscreenCanvasRenderingContext2D))throw new TypeError("context must be a CanvasRenderingContext2D or OffscreenCanvasRenderingContext2D.");if(!e||typeof e!="object")throw new TypeError("options must be an object.");if(!["fill","contain","cover"].includes(e.fit))throw new TypeError("options.fit must be 'fill', 'contain', or 'cover'.");if(e.rotation!==void 0&&![0,90,180,270].includes(e.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180, or 270.");e.crop!==void 0&&li(e.crop,"options.");let r=t.canvas.width,n=t.canvas.height,a=e.rotation??this.rotation,[s,o]=a%180===0?[this.codedWidth,this.codedHeight]:[this.codedHeight,this.codedWidth];e.crop&&di(e.crop,s,o);let c,u,d,l,{sx:m,sy:f,sWidth:g,sHeight:b}=this._rotateSourceRegion(e.crop?.left??0,e.crop?.top??0,e.crop?.width??s,e.crop?.height??o,a);if(e.fit==="fill")c=0,u=0,d=r,l=n;else{let[y,k]=e.crop?[e.crop.width,e.crop.height]:[s,o],w=e.fit==="contain"?Math.min(r/y,n/k):Math.max(r/y,n/k);d=y*w,l=k*w,c=(r-d)/2,u=(n-l)/2}t.save();let h=a%180===0?1:d/l;t.translate(r/2,n/2),t.rotate(a*Math.PI/180),t.scale(1/h,h),t.translate(-r/2,-n/2),t.drawImage(this.toCanvasImageSource(),m,f,g,b,c,u,d,l),t.restore()}_rotateSourceRegion(t,e,r,n,a){return a===90?[t,e,r,n]=[e,this.codedHeight-t-r,n,r]:a===180?[t,e]=[this.codedWidth-t-r,this.codedHeight-e-n]:a===270&&([t,e,r,n]=[this.codedWidth-e-n,t,n,r]),{sx:t,sy:e,sWidth:r,sHeight:n}}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(p(this._data!==null),this._data instanceof Uint8Array){let t=this.toVideoFrame();return queueMicrotask(()=>t.close()),t}else return this._data}setRotation(t){if(![0,90,180,270].includes(t))throw new TypeError("newRotation must be 0, 90, 180, or 270.");this.rotation=t}setTimestamp(t){if(!Number.isFinite(t))throw new TypeError("newTimestamp must be a number.");this.timestamp=t}setDuration(t){if(!Number.isFinite(t)||t<0)throw new TypeError("newDuration must be a non-negative number.");this.duration=t}[Symbol.dispose](){this.close()}},Ir=class{constructor(t){this.primaries=t?.primaries??null,this.transfer=t?.transfer??null,this.matrix=t?.matrix??null,this.fullRange=t?.fullRange??null}toJSON(){return{primaries:this.primaries,transfer:this.transfer,matrix:this.matrix,fullRange:this.fullRange}}},ir=i=>typeof VideoFrame<"u"&&i instanceof VideoFrame,di=(i,t,e)=>{i.left=Math.min(i.left,t),i.top=Math.min(i.top,e),i.width=Math.min(i.width,t-i.left),i.height=Math.min(i.height,e-i.top),p(i.width>=0),p(i.height>=0)},li=(i,t)=>{if(!i||typeof i!="object")throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(i.left)||i.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(i.top)||i.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(i.width)||i.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(i.height)||i.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},Zo=i=>{if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.colorSpace!==void 0&&!["display-p3","srgb"].includes(i.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(i.format!==void 0&&typeof i.format!="string")throw new TypeError("options.format, when provided, must be a string.");if(i.layout!==void 0){if(!Array.isArray(i.layout))throw new TypeError("options.layout, when provided, must be an array.");for(let t of i.layout){if(!t||typeof t!="object")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(i.rect!==void 0){if(!i.rect||typeof i.rect!="object")throw new TypeError("options.rect, when provided, must be an object.");if(i.rect.x!==void 0&&(!Number.isInteger(i.rect.x)||i.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(i.rect.y!==void 0&&(!Number.isInteger(i.rect.y)||i.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(i.rect.width!==void 0&&(!Number.isInteger(i.rect.width)||i.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(i.rect.height!==void 0&&(!Number.isInteger(i.rect.height)||i.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},Ku=(i,t,e)=>{let r=Gu(i),n=[],a=0;for(let s of r){let o=Math.ceil(t/s.widthDivisor),c=Math.ceil(e/s.heightDivisor),u=o*s.sampleBytes,d=u*c;n.push({offset:a,stride:u}),a+=d}return n},Gu=i=>{let t=(e,r,n,a,s)=>{let o=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:r,widthDivisor:n,heightDivisor:a},{sampleBytes:r,widthDivisor:n,heightDivisor:a}];return s&&o.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),o};switch(i){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:J(i),p(!1)}},Ga=new Set(["f32","f32-planar","s16","s16-planar","s32","s32-planar","u8","u8-planar"]),Te=class i{constructor(t){this._closed=!1;if(ci(t)){if(t.format===null)throw new TypeError("AudioData with null format is not supported.");this._data=t,this.format=t.format,this.sampleRate=t.sampleRate,this.numberOfFrames=t.numberOfFrames,this.numberOfChannels=t.numberOfChannels,this.timestamp=t.timestamp/1e6,this.duration=t.numberOfFrames/t.sampleRate}else{if(!t||typeof t!="object")throw new TypeError("Invalid AudioDataInit: must be an object.");if(!Ga.has(t.format))throw new TypeError("Invalid AudioDataInit: invalid format.");if(!Number.isFinite(t.sampleRate)||t.sampleRate<=0)throw new TypeError("Invalid AudioDataInit: sampleRate must be > 0.");if(!Number.isInteger(t.numberOfChannels)||t.numberOfChannels===0)throw new TypeError("Invalid AudioDataInit: numberOfChannels must be an integer > 0.");if(!Number.isFinite(t?.timestamp))throw new TypeError("init.timestamp must be a number.");let e=t.data.byteLength/(nr(t.format)*t.numberOfChannels);if(!Number.isInteger(e))throw new TypeError("Invalid AudioDataInit: data size is not a multiple of frame size.");this.format=t.format,this.sampleRate=t.sampleRate,this.numberOfFrames=e,this.numberOfChannels=t.numberOfChannels,this.timestamp=t.timestamp,this.duration=e/t.sampleRate;let r;if(t.data instanceof ArrayBuffer)r=new Uint8Array(t.data);else if(ArrayBuffer.isView(t.data))r=new Uint8Array(t.data.buffer,t.data.byteOffset,t.data.byteLength);else throw new TypeError("Invalid AudioDataInit: data is not a BufferSource.");let n=this.numberOfFrames*this.numberOfChannels*nr(this.format);if(r.byteLength<n)throw new TypeError("Invalid AudioDataInit: insufficient data size.");this._data=r}ui?.register(this,{type:"audio",data:this._data},this)}get microsecondTimestamp(){return Math.trunc(Ye*this.timestamp)}get microsecondDuration(){return Math.trunc(Ye*this.duration)}allocationSize(t){if(!t||typeof t!="object")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(t.format!==void 0&&!Ga.has(t.format))throw new TypeError("Invalid format.");if(t.frameOffset!==void 0&&(!Number.isInteger(t.frameOffset)||t.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(t.frameCount!==void 0&&(!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.");let e=t.format??this.format,r=t.frameOffset??0;if(r>=this.numberOfFrames)throw new RangeError("frameOffset out of range");let n=t.frameCount!==void 0?t.frameCount:this.numberOfFrames-r;if(n>this.numberOfFrames-r)throw new RangeError("frameCount out of range");let a=nr(e),s=Ar(e);if(s&&t.planeIndex>=this.numberOfChannels)throw new RangeError("planeIndex out of range");if(!s&&t.planeIndex!==0)throw new RangeError("planeIndex out of range");return(s?n:n*this.numberOfChannels)*a}copyTo(t,e){if(!hr(t))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(!e||typeof e!="object")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(e.format!==void 0&&!Ga.has(e.format))throw new TypeError("Invalid format.");if(e.frameOffset!==void 0&&(!Number.isInteger(e.frameOffset)||e.frameOffset<0))throw new TypeError("frameOffset must be a non-negative integer.");if(e.frameCount!==void 0&&(!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.");let{planeIndex:r,format:n,frameCount:a,frameOffset:s}=e,o=this.format,c=n??this.format;if(!c)throw new Error("Destination format not determined");let u=this.numberOfFrames,d=this.numberOfChannels,l=s??0;if(l>=u)throw new RangeError("frameOffset out of range");let m=a!==void 0?a:u-l;if(m>u-l)throw new RangeError("frameCount out of range");let f=nr(c),g=Ar(c);if(g&&r>=d)throw new RangeError("planeIndex out of range");if(!g&&r!==0)throw new RangeError("planeIndex out of range");let h=(g?m:m*d)*f;if(t.byteLength<h)throw new RangeError("Destination buffer is too small");let y=D(t),k=ec(c);if(ci(this._data))Mt()&&d>2&&c!==o?Qu(this._data,y,o,c,d,r,l,m):this._data.copyTo(t,{planeIndex:r,frameOffset:l,frameCount:m,format:c});else{let w=this._data,S=D(w),T=Jo(o),x=nr(o),P=Ar(o);for(let C=0;C<m;C++)if(g){let _=C*f,B;P?B=(r*u+(C+l))*x:B=((C+l)*d+r)*x;let E=T(S,B);k(y,_,E)}else for(let _=0;_<d;_++){let E=(C*d+_)*f,F;P?F=(_*u+(C+l))*x:F=((C+l)*d+_)*x;let z=T(S,F);k(y,E,z)}}}clone(){if(this._closed)throw new Error("AudioSample is closed.");if(ci(this._data)){let t=new i(this._data.clone());return t.setTimestamp(this.timestamp),t}else return new i({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp,data:this._data})}close(){this._closed||(ui?.unregister(this),ci(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");if(ci(this._data)){if(this._data.timestamp===this.microsecondTimestamp)return this._data.clone();if(Ar(this.format)){let t=this.allocationSize({planeIndex:0,format:this.format}),e=new ArrayBuffer(t*this.numberOfChannels);for(let r=0;r<this.numberOfChannels;r++)this.copyTo(new Uint8Array(e,r*t,t),{planeIndex:r,format:this.format});return new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:e})}else{let t=new ArrayBuffer(this.allocationSize({planeIndex:0,format:this.format}));return this.copyTo(t,{planeIndex:0,format:this.format}),new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:t})}}else 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.");let t=new AudioBuffer({numberOfChannels:this.numberOfChannels,length:this.numberOfFrames,sampleRate:this.sampleRate}),e=new Float32Array(this.allocationSize({planeIndex:0,format:"f32-planar"})/4);for(let r=0;r<this.numberOfChannels;r++)this.copyTo(e,{planeIndex:r,format:"f32-planar"}),t.copyToChannel(e,r);return t}setTimestamp(t){if(!Number.isFinite(t))throw new TypeError("newTimestamp must be a number.");this.timestamp=t}[Symbol.dispose](){this.close()}static*_fromAudioBuffer(t,e){if(!(t instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=48e3*5,n=t.numberOfChannels,a=t.sampleRate,s=t.length,o=Math.floor(r/n),c=0,u=s;for(;u>0;){let d=Math.min(o,u),l=new Float32Array(n*d);for(let m=0;m<n;m++)t.copyFromChannel(l.subarray(m*d,(m+1)*d),m,c);yield new i({format:"f32-planar",sampleRate:a,numberOfFrames:d,numberOfChannels:n,timestamp:e+c/a,data:l}),c+=d,u-=d}}static fromAudioBuffer(t,e){if(!(t instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=48e3*5,n=t.numberOfChannels,a=t.sampleRate,s=t.length,o=Math.floor(r/n),c=0,u=s,d=[];for(;u>0;){let l=Math.min(o,u),m=new Float32Array(n*l);for(let g=0;g<n;g++)t.copyFromChannel(m.subarray(g*l,(g+1)*l),g,c);let f=new i({format:"f32-planar",sampleRate:a,numberOfFrames:l,numberOfChannels:n,timestamp:e+c/a,data:m});d.push(f),c+=l,u-=l}return d}},nr=i=>{switch(i){case"u8":case"u8-planar":return 1;case"s16":case"s16-planar":return 2;case"s32":case"s32-planar":return 4;case"f32":case"f32-planar":return 4;default:throw new Error("Unknown AudioSampleFormat")}},Ar=i=>{switch(i){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},Jo=i=>{switch(i){case"u8":case"u8-planar":return(t,e)=>(t.getUint8(e)-128)/128;case"s16":case"s16-planar":return(t,e)=>t.getInt16(e,!0)/32768;case"s32":case"s32-planar":return(t,e)=>t.getInt32(e,!0)/2147483648;case"f32":case"f32-planar":return(t,e)=>t.getFloat32(e,!0)}},ec=i=>{switch(i){case"u8":case"u8-planar":return(t,e,r)=>t.setUint8(e,ae((r+1)*127.5,0,255));case"s16":case"s16-planar":return(t,e,r)=>t.setInt16(e,ae(Math.round(r*32767),-32768,32767),!0);case"s32":case"s32-planar":return(t,e,r)=>t.setInt32(e,ae(Math.round(r*2147483647),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(t,e,r)=>t.setFloat32(e,r,!0)}},ci=i=>typeof AudioData<"u"&&i instanceof AudioData,Qu=(i,t,e,r,n,a,s,o)=>{let c=Jo(e),u=ec(r),d=nr(e),l=nr(r),m=Ar(e);if(Ar(r))if(m){let g=new ArrayBuffer(o*d),b=D(g);i.copyTo(g,{planeIndex:a,frameOffset:s,frameCount:o,format:e});for(let h=0;h<o;h++){let y=h*d,k=h*l,w=c(b,y);u(t,k,w)}}else{let g=new ArrayBuffer(o*n*d),b=D(g);i.copyTo(g,{planeIndex:0,frameOffset:s,frameCount:o,format:e});for(let h=0;h<o;h++){let y=(h*n+a)*d,k=h*l,w=c(b,y);u(t,k,w)}}else if(m){let g=o*d,b=new ArrayBuffer(g),h=D(b);for(let y=0;y<n;y++){i.copyTo(b,{planeIndex:y,frameOffset:s,frameCount:o,format:e});for(let k=0;k<o;k++){let w=k*d,S=(k*n+y)*l,T=c(h,w);u(t,S,T)}}}else{let g=new ArrayBuffer(o*n*d),b=D(g);i.copyTo(g,{planeIndex:0,frameOffset:s,frameCount:o,format:e});for(let h=0;h<o;h++)for(let y=0;y<n;y++){let k=h*n+y,w=k*d,S=k*l,T=c(b,w);u(t,S,T)}}};var vr=i=>{if(!i||typeof i!="object")throw new TypeError("options must be an object.");if(i.metadataOnly!==void 0&&typeof i.metadataOnly!="boolean")throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(i.verifyKeyPackets!==void 0&&typeof i.verifyKeyPackets!="boolean")throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(i.verifyKeyPackets&&i.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.")},bt=i=>{if(!Rt(i))throw new TypeError("timestamp must be a number.")},$a=(i,t,e)=>e.verifyKeyPackets?t.then(async r=>{if(!r||r.type==="delta")return r;let n=await i.determinePacketType(r);return n&&(r.type=n),r}):t,tt=class{constructor(t){if(!(t instanceof or))throw new TypeError("track must be an InputTrack.");this._track=t}getFirstPacket(t={}){if(vr(t),this._track.input._disposed)throw new de;return $a(this._track,this._track._backing.getFirstPacket(t),t)}getPacket(t,e={}){if(bt(t),vr(e),this._track.input._disposed)throw new de;return $a(this._track,this._track._backing.getPacket(t,e),e)}getNextPacket(t,e={}){if(!(t instanceof W))throw new TypeError("packet must be an EncodedPacket.");if(vr(e),this._track.input._disposed)throw new de;return $a(this._track,this._track._backing.getNextPacket(t,e),e)}async getKeyPacket(t,e={}){if(bt(t),vr(e),this._track.input._disposed)throw new de;if(!e.verifyKeyPackets)return this._track._backing.getKeyPacket(t,e);let r=await this._track._backing.getKeyPacket(t,e);return r&&(p(r.type==="key"),await this._track.determinePacketType(r)==="delta"?this.getKeyPacket(r.timestamp-1/this._track.timeResolution,e):r)}async getNextKeyPacket(t,e={}){if(!(t instanceof W))throw new TypeError("packet must be an EncodedPacket.");if(vr(e),this._track.input._disposed)throw new de;if(!e.verifyKeyPackets)return this._track._backing.getNextKeyPacket(t,e);let r=await this._track._backing.getNextKeyPacket(t,e);return r&&(p(r.type==="key"),await this._track.determinePacketType(r)==="delta"?this.getNextKeyPacket(r,e):r)}packets(t,e,r={}){if(t!==void 0&&!(t instanceof W))throw new TypeError("startPacket must be an EncodedPacket.");if(t!==void 0&&t.isMetadataOnly&&!r?.metadataOnly)throw new TypeError("startPacket can only be metadata-only if options.metadataOnly is enabled.");if(e!==void 0&&!(e instanceof W))throw new TypeError("endPacket must be an EncodedPacket.");if(vr(r),this._track.input._disposed)throw new de;let n=[],{promise:a,resolve:s}=Y(),{promise:o,resolve:c}=Y(),u=!1,d=!1,l=null,m=[],f=()=>Math.max(2,m.length);(async()=>{let b=t??await this.getFirstPacket(r);for(;b&&!d&&!this._track.input._disposed&&!(e&&b.sequenceNumber>=e?.sequenceNumber);){if(n.length>f()){({promise:o,resolve:c}=Y()),await o;continue}n.push(b),s(),{promise:a,resolve:s}=Y(),b=await this.getNextPacket(b,r)}u=!0,s()})().catch(b=>{l||(l=b,s())});let g=this._track;return{async next(){for(;;){if(g.input._disposed)throw new de;if(d)return{value:void 0,done:!0};if(l)throw l;if(n.length>0){let b=n.shift(),h=performance.now();for(m.push(h);m.length>0&&h-m[0]>=1e3;)m.shift();return c(),{value:b,done:!1}}else{if(u)return{value:void 0,done:!0};await a}}},async return(){return d=!0,c(),s(),{value:void 0,done:!0}},async throw(b){throw b},[Symbol.asyncIterator](){return this}}}},mi=class{constructor(t,e){this.onSample=t;this.onError=e}},fi=class{mediaSamplesInRange(t=0,e=1/0){bt(t),bt(e);let r=[],n=!1,a=null,{promise:s,resolve:o}=Y(),{promise:c,resolve:u}=Y(),d=!1,l=!1,m=!1,f=null;(async()=>{let h=await this._createDecoder(x=>{if(u(),x.timestamp>=e&&(l=!0),l){x.close();return}a&&(x.timestamp>t?(r.push(a),n=!0):a.close()),x.timestamp>=t&&(r.push(x),n=!0),a=n?null:x,r.length>0&&(o(),{promise:s,resolve:o}=Y())},x=>{f||(f=x,o())}),y=this._createPacketSink(),k=await y.getKeyPacket(t,{verifyKeyPackets:!0})??await y.getFirstPacket(),w=k,T=y.packets(k??void 0,void 0);for(await T.next();w&&!l&&!this._track.input._disposed;){let x=tc(r.length);if(r.length+h.getDecodeQueueSize()>x){({promise:c,resolve:u}=Y()),await c;continue}h.decode(w);let P=await T.next();if(P.done)break;w=P.value}await T.return(),!m&&!this._track.input._disposed&&await h.flush(),h.close(),!n&&a&&r.push(a),d=!0,o()})().catch(h=>{f||(f=h,o())});let g=this._track,b=()=>{a?.close();for(let h of r)h.close()};return{async next(){for(;;){if(g.input._disposed)throw b(),new de;if(m)return{value:void 0,done:!0};if(f)throw b(),f;if(r.length>0){let h=r.shift();return u(),{value:h,done:!1}}else if(!d)await s;else return{value:void 0,done:!0}}},async return(){return m=!0,l=!0,u(),o(),b(),{value:void 0,done:!0}},async throw(h){throw h},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(t){mo(t);let e=lo(t),r=[],n=[],{promise:a,resolve:s}=Y(),{promise:o,resolve:c}=Y(),u=!1,d=!1,l=null,m=b=>{n.push(b),s(),{promise:a,resolve:s}=Y()};(async()=>{let b=await this._createDecoder(x=>{if(c(),d){x.close();return}let P=0;for(;r.length>0&&x.timestamp-r[0]>-1e-10;)P++,r.shift();if(P>0)for(let C=0;C<P;C++)m(C<P-1?x.clone():x);else x.close()},x=>{l||(l=x,s())}),h=this._createPacketSink(),y=null,k=null,w=-1,S=async()=>{p(k);let x=k;for(b.decode(x);x.sequenceNumber<w;){let P=tc(n.length);for(;n.length+b.getDecodeQueueSize()>P&&!d;)({promise:o,resolve:c}=Y()),await o;if(d)break;let C=await h.getNextPacket(x);p(C),b.decode(C),x=C}w=-1},T=async()=>{await b.flush();for(let x=0;x<r.length;x++)m(null);r.length=0};for await(let x of e){if(bt(x),d||this._track.input._disposed)break;let P=await h.getPacket(x),C=P&&await h.getKeyPacket(x,{verifyKeyPackets:!0});if(!C){w!==-1&&(await S(),await T()),m(null),y=null;continue}y&&(C.sequenceNumber!==k.sequenceNumber||P.timestamp<y.timestamp)&&(await S(),await T()),r.push(P.timestamp),w=Math.max(P.sequenceNumber,w),y=P,k=C}!d&&!this._track.input._disposed&&(w!==-1&&await S(),await T()),b.close(),u=!0,s()})().catch(b=>{l||(l=b,s())});let f=this._track,g=()=>{for(let b of n)b?.close()};return{async next(){for(;;){if(f.input._disposed)throw g(),new de;if(d)return{value:void 0,done:!0};if(l)throw g(),l;if(n.length>0){let b=n.shift();return p(b!==void 0),c(),{value:b,done:!1}}else if(!u)await a;else return{value:void 0,done:!0}}},async return(){return d=!0,c(),s(),g(),{value:void 0,done:!0}},async throw(b){throw b},[Symbol.asyncIterator](){return this}}}},tc=i=>i===0?40:8,Xa=class extends mi{constructor(e,r,n,a,s,o){super(e,r);this.codec=n;this.decoderConfig=a;this.rotation=s;this.timeResolution=o;this.decoder=null;this.customDecoder=null;this.customDecoderCallSerializer=new Et;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;let c=Cr.find(u=>u.supports(n,a));if(c)this.customDecoder=new c,this.customDecoder.codec=n,this.customDecoder.config=a,this.customDecoder.onSample=u=>{if(!(u instanceof pe))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(u)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init());else{let u=l=>{if(this.alphaQueue.length>0){let m=this.alphaQueue.shift();p(m!==void 0),this.mergeAlpha(l,m)}else this.colorQueue.push(l)};if(n==="avc"&&this.decoderConfig.description&&Jr()){let l=tn(H(this.decoderConfig.description));if(l&&l.sequenceParameterSets.length>0){let m=ri(l.sequenceParameterSets[0]);m&&m.frameMbsOnlyFlag===0&&(this.decoderConfig={...this.decoderConfig,hardwareAcceleration:"prefer-software"})}}let d=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:l=>{try{u(l)}catch(m){this.onError(m)}},error:l=>{l.stack=d,this.onError(l)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(p(this.decoder),Math.max(this.decoder.decodeQueueSize,this.alphaDecoder?.decodeQueueSize??0))}decode(e){if(this.codec==="hevc"&&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),Mt()||Da(this.inputTimestamps,e.timestamp,r=>r),Jr()&&this.currentPacketIndex===0&&this.codec==="avc"){let r=[];for(let a of Wa(e.data,this.decoderConfig)){let s=gt(e.data[a.offset]);s>=20&&s<=31||r.push(e.data.subarray(a.offset,a.offset+a.length))}let n=Uo(r,this.decoderConfig);e=new W(n,e.type,e.timestamp,e.duration)}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha||this.mergerCreationFailed){this.pushNullAlphaFrame();return}if(!this.merger)try{this.merger=new Ya}catch(n){console.error("Due to an error, only color data will be decoded.",n),this.mergerCreationFailed=!0,this.decodeAlphaData(e);return}if(!this.alphaDecoder){let n=s=>{if(this.alphaDecoderQueueSize--,this.colorQueue.length>0){let o=this.colorQueue.shift();p(o!==void 0),this.mergeAlpha(o,s)}else this.alphaQueue.push(s);for(this.decodedAlphaChunkCount++;this.nullAlphaFrameQueue.length>0&&this.nullAlphaFrameQueue[0]===this.decodedAlphaChunkCount;)if(this.nullAlphaFrameQueue.shift(),this.colorQueue.length>0){let o=this.colorQueue.shift();p(o!==void 0),this.mergeAlpha(o,null)}else this.alphaQueue.push(null)},a=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:s=>{try{n(s)}catch(o){this.onError(o)}},error:s=>{s.stack=a,this.onError(s)}}),this.alphaDecoder.configure(this.decoderConfig)}let r=sn(this.codec,this.decoderConfig,e.sideData.alpha);if(this.alphaHadKeyframe||(this.alphaHadKeyframe=r==="key"),this.alphaHadKeyframe){if(this.codec==="hevc"&&this.currentAlphaPacketIndex>0&&!this.alphaRaslSkipped){if(this.hasHevcRaslPicture(e.sideData.alpha)){this.pushNullAlphaFrame();return}this.alphaRaslSkipped=!0}this.currentAlphaPacketIndex++,this.alphaDecoder.decode(e.alphaToEncodedVideoChunk(r??e.type)),this.alphaDecoderQueueSize++}else this.pushNullAlphaFrame()}pushNullAlphaFrame(){this.alphaDecoderQueueSize===0?this.alphaQueue.push(null):this.nullAlphaFrameQueue.push(this.decodedAlphaChunkCount+this.alphaDecoderQueueSize)}hasHevcRaslPicture(e){for(let r of qa(e,this.decoderConfig)){let n=et(e[r.offset]);if(n===8||n===9)return!0}return!1}sampleHandler(e){if(Mt()){if(this.sampleQueue.length>0&&e.timestamp>=K(this.sampleQueue).timestamp){for(let r of this.sampleQueue)this.finalizeAndEmitSample(r);this.sampleQueue.length=0}Da(this.sampleQueue,e,r=>r.timestamp)}else{let r=this.inputTimestamps.shift();p(r!==void 0),e.setTimestamp(r),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,r){if(!r){let s=new pe(e);this.sampleHandler(s);return}p(this.merger),this.merger.update(e,r),e.close(),r.close();let n=new VideoFrame(this.merger.canvas,{timestamp:e.timestamp,duration:e.duration??void 0}),a=new pe(n);this.sampleHandler(a)}async flush(){if(this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(p(this.decoder),await Promise.all([this.decoder.flush(),this.alphaDecoder?.flush()]),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.alphaHadKeyframe=!1,this.decodedAlphaChunkCount=0,this.alphaDecoderQueueSize=0,this.nullAlphaFrameQueue.length=0,this.currentAlphaPacketIndex=0,this.alphaRaslSkipped=!1),Mt()){for(let e of this.sampleQueue)this.finalizeAndEmitSample(e);this.sampleQueue.length=0}this.currentPacketIndex=0,this.raslSkipped=!1}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(p(this.decoder),this.decoder.close(),this.alphaDecoder?.close(),this.colorQueue.forEach(e=>e.close()),this.colorQueue.length=0,this.alphaQueue.forEach(e=>e?.close()),this.alphaQueue.length=0,this.merger?.close());for(let e of this.sampleQueue)e.close();this.sampleQueue.length=0}},Ya=class{constructor(){typeof OffscreenCanvas<"u"?this.canvas=new OffscreenCanvas(300,150):this.canvas=document.createElement("canvas");let t=this.canvas.getContext("webgl2",{premultipliedAlpha:!1});if(!t)throw new Error("Couldn't acquire WebGL 2 context.");this.gl=t,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(){let t=this.createShader(this.gl.VERTEX_SHADER,`#version 300 es
			in vec2 a_position;
			in vec2 a_texCoord;
			out vec2 v_texCoord;
			
			void main() {
				gl_Position = vec4(a_position, 0.0, 1.0);
				v_texCoord = a_texCoord;
			}
		`),e=this.createShader(this.gl.FRAGMENT_SHADER,`#version 300 es
			precision highp float;
			
			uniform sampler2D u_colorTexture;
			uniform sampler2D u_alphaTexture;
			in vec2 v_texCoord;
			out vec4 fragColor;
			
			void main() {
				vec3 color = texture(u_colorTexture, v_texCoord).rgb;
				float alpha = texture(u_alphaTexture, v_texCoord).r;
				fragColor = vec4(color, alpha);
			}
		`),r=this.gl.createProgram();return this.gl.attachShader(r,t),this.gl.attachShader(r,e),this.gl.linkProgram(r),r}createShader(t,e){let r=this.gl.createShader(t);return this.gl.shaderSource(r,e),this.gl.compileShader(r),r}createVAO(){let t=this.gl.createVertexArray();this.gl.bindVertexArray(t);let e=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,e,this.gl.STATIC_DRAW);let n=this.gl.getAttribLocation(this.program,"a_position"),a=this.gl.getAttribLocation(this.program,"a_texCoord");return this.gl.enableVertexAttribArray(n),this.gl.vertexAttribPointer(n,2,this.gl.FLOAT,!1,16,0),this.gl.enableVertexAttribArray(a),this.gl.vertexAttribPointer(a,2,this.gl.FLOAT,!1,16,8),t}createTexture(){let t=this.gl.createTexture();return this.gl.bindTexture(this.gl.TEXTURE_2D,t),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),t}update(t,e){(t.displayWidth!==this.canvas.width||t.displayHeight!==this.canvas.height)&&(this.canvas.width=t.displayWidth,this.canvas.height=t.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,t),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,e),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(){this.gl.getExtension("WEBGL_lose_context")?.loseContext(),this.gl=null}},ar=class extends fi{constructor(t){if(!(t instanceof Fe))throw new TypeError("videoTrack must be an InputVideoTrack.");super(),this._track=t}async _createDecoder(t,e){if(!await this._track.canDecode())throw new Error("This video track cannot be decoded by this browser. Make sure to check decodability before using a track.");let r=this._track.codec,n=this._track.rotation,a=await this._track.getDecoderConfig(),s=this._track.timeResolution;return p(r&&a),new Xa(t,e,r,a,n,s)}_createPacketSink(){return new tt(this._track)}async getSample(t){bt(t);for await(let e of this.mediaSamplesAtTimestamps([t]))return e;throw new Error("Internal error: Iterator returned nothing.")}samples(t=0,e=1/0){return this.mediaSamplesInRange(t,e)}samplesAtTimestamps(t){return this.mediaSamplesAtTimestamps(t)}},pi=class{constructor(t,e={}){this._nextCanvasIndex=0;if(!(t instanceof Fe))throw new TypeError("videoTrack must be an InputVideoTrack.");if(e&&typeof e!="object")throw new TypeError("options must be an object.");if(e.alpha!==void 0&&typeof e.alpha!="boolean")throw new TypeError("options.alpha, when provided, must be a boolean.");if(e.width!==void 0&&(!Number.isInteger(e.width)||e.width<=0))throw new TypeError("options.width, when defined, must be a positive integer.");if(e.height!==void 0&&(!Number.isInteger(e.height)||e.height<=0))throw new TypeError("options.height, when defined, must be a positive integer.");if(e.fit!==void 0&&!["fill","contain","cover"].includes(e.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(e.width!==void 0&&e.height!==void 0&&e.fit===void 0)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(e.rotation!==void 0&&![0,90,180,270].includes(e.rotation))throw new TypeError("options.rotation, when provided, must be 0, 90, 180 or 270.");if(e.crop!==void 0&&li(e.crop,"options."),e.poolSize!==void 0&&(typeof e.poolSize!="number"||!Number.isInteger(e.poolSize)||e.poolSize<0))throw new TypeError("poolSize must be a non-negative integer.");let r=e.rotation??t.rotation,[n,a]=r%180===0?[t.codedWidth,t.codedHeight]:[t.codedHeight,t.codedWidth],s=e.crop;s&&di(s,n,a);let[o,c]=s?[s.width,s.height]:[n,a],u=o/c;e.width!==void 0&&e.height===void 0?(o=e.width,c=Math.round(o/u)):e.width===void 0&&e.height!==void 0?(c=e.height,o=Math.round(c*u)):e.width!==void 0&&e.height!==void 0&&(o=e.width,c=e.height),this._videoTrack=t,this._alpha=e.alpha??!1,this._width=o,this._height=c,this._rotation=r,this._crop=s,this._fit=e.fit??"fill",this._videoSampleSink=new ar(t),this._canvasPool=Array.from({length:e.poolSize??0},()=>null)}_videoSampleToWrappedCanvas(t){let e=this._canvasPool[this._nextCanvasIndex],r=!1;e||(typeof document<"u"?(e=document.createElement("canvas"),e.width=this._width,e.height=this._height):e=new OffscreenCanvas(this._width,this._height),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=e),r=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);let n=e.getContext("2d",{alpha:this._alpha||Ze()});p(n),n.resetTransform(),r||(!this._alpha&&Ze()?(n.fillStyle="black",n.fillRect(0,0,this._width,this._height)):n.clearRect(0,0,this._width,this._height)),t.drawWithFit(n,{fit:this._fit,rotation:this._rotation,crop:this._crop});let a={canvas:e,timestamp:t.timestamp,duration:t.duration};return t.close(),a}async getCanvas(t){bt(t);let e=await this._videoSampleSink.getSample(t);return e&&this._videoSampleToWrappedCanvas(e)}canvases(t=0,e=1/0){return Yr(this._videoSampleSink.samples(t,e),r=>this._videoSampleToWrappedCanvas(r))}canvasesAtTimestamps(t){return Yr(this._videoSampleSink.samplesAtTimestamps(t),e=>e&&this._videoSampleToWrappedCanvas(e))}},Za=class extends mi{constructor(e,r,n,a){super(e,r);this.decoder=null;this.customDecoder=null;this.customDecoderCallSerializer=new Et;this.customDecoderQueueSize=0;this.currentTimestamp=null;let s=c=>{(this.currentTimestamp===null||Math.abs(c.timestamp-this.currentTimestamp)>=c.duration)&&(this.currentTimestamp=c.timestamp);let u=this.currentTimestamp;if(this.currentTimestamp+=c.duration,c.numberOfFrames===0){c.close();return}let d=a.sampleRate;c.setTimestamp(Math.round(u*d)/d),e(c)},o=Pr.find(c=>c.supports(n,a));if(o)this.customDecoder=new o,this.customDecoder.codec=n,this.customDecoder.config=a,this.customDecoder.onSample=c=>{if(!(c instanceof Te))throw new TypeError("The argument passed to onSample must be an AudioSample.");s(c)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init());else{let c=new Error("Decoding error").stack;this.decoder=new AudioDecoder({output:u=>{try{s(new Te(u))}catch(d){this.onError(d)}},error:u=>{u.stack=c,this.onError(u)}}),this.decoder.configure(a)}}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())}},Ja=class extends mi{constructor(e,r,n){super(e,r);this.decoderConfig=n;this.currentTimestamp=null;p(Z.includes(n.codec)),this.codec=n.codec;let{dataType:a,sampleSize:s,littleEndian:o}=be(this.codec);switch(this.inputSampleSize=s,s){case 1:a==="unsigned"?this.readInputValue=(c,u)=>c.getUint8(u)-2**7:a==="signed"?this.readInputValue=(c,u)=>c.getInt8(u):a==="ulaw"?this.readInputValue=(c,u)=>Go(c.getUint8(u)):a==="alaw"?this.readInputValue=(c,u)=>$o(c.getUint8(u)):p(!1);break;case 2:a==="unsigned"?this.readInputValue=(c,u)=>c.getUint16(u,o)-2**15:a==="signed"?this.readInputValue=(c,u)=>c.getInt16(u,o):p(!1);break;case 3:a==="unsigned"?this.readInputValue=(c,u)=>Xt(c,u,o)-2**23:a==="signed"?this.readInputValue=(c,u)=>fo(c,u,o):p(!1);break;case 4:a==="unsigned"?this.readInputValue=(c,u)=>c.getUint32(u,o)-2**31:a==="signed"?this.readInputValue=(c,u)=>c.getInt32(u,o):a==="float"?this.readInputValue=(c,u)=>c.getFloat32(u,o):p(!1);break;case 8:a==="float"?this.readInputValue=(c,u)=>c.getFloat64(u,o):p(!1);break;default:J(s),p(!1)}switch(s){case 1:a==="ulaw"||a==="alaw"?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(c,u,d)=>c.setInt16(u,d,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(c,u,d)=>c.setUint8(u,d+2**7));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(c,u,d)=>c.setInt16(u,d,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(c,u,d)=>c.setInt32(u,d<<8,!0);break;case 4:this.outputSampleSize=4,a==="float"?(this.outputFormat="f32",this.writeOutputValue=(c,u,d)=>c.setFloat32(u,d,!0)):(this.outputFormat="s32",this.writeOutputValue=(c,u,d)=>c.setInt32(u,d,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(c,u,d)=>c.setFloat32(u,d,!0);break;default:J(s),p(!1)}}getDecodeQueueSize(){return 0}decode(e){let r=D(e.data),n=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,a=n*this.decoderConfig.numberOfChannels*this.outputSampleSize,s=new ArrayBuffer(a),o=new DataView(s);for(let l=0;l<n*this.decoderConfig.numberOfChannels;l++){let m=l*this.inputSampleSize,f=l*this.outputSampleSize,g=this.readInputValue(r,m);this.writeOutputValue(o,f,g)}let c=n/this.decoderConfig.sampleRate;(this.currentTimestamp===null||Math.abs(e.timestamp-this.currentTimestamp)>=c)&&(this.currentTimestamp=e.timestamp);let u=this.currentTimestamp;this.currentTimestamp+=c;let d=new Te({format:this.outputFormat,data:s,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:n,timestamp:u});this.onSample(d)}async flush(){}close(){}},sr=class extends fi{constructor(t){if(!(t instanceof te))throw new TypeError("audioTrack must be an InputAudioTrack.");super(),this._track=t}async _createDecoder(t,e){if(!await this._track.canDecode())throw new Error("This audio track cannot be decoded by this browser. Make sure to check decodability before using a track.");let r=this._track.codec,n=await this._track.getDecoderConfig();return p(r&&n),Z.includes(n.codec)?new Ja(t,e,n):new Za(t,e,r,n)}_createPacketSink(){return new tt(this._track)}async getSample(t){bt(t);for await(let e of this.mediaSamplesAtTimestamps([t]))return e;throw new Error("Internal error: Iterator returned nothing.")}samples(t=0,e=1/0){return this.mediaSamplesInRange(t,e)}samplesAtTimestamps(t){return this.mediaSamplesAtTimestamps(t)}},es=class{constructor(t){if(!(t instanceof te))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new sr(t)}_audioSampleToWrappedArrayBuffer(t){let e={buffer:t.toAudioBuffer(),timestamp:t.timestamp,duration:t.duration};return t.close(),e}async getBuffer(t){bt(t);let e=await this._audioSampleSink.getSample(t);return e&&this._audioSampleToWrappedArrayBuffer(e)}buffers(t=0,e=1/0){return Yr(this._audioSampleSink.samples(t,e),r=>this._audioSampleToWrappedArrayBuffer(r))}buffersAtTimestamps(t){return Yr(this._audioSampleSink.samplesAtTimestamps(t),e=>e&&this._audioSampleToWrappedArrayBuffer(e))}};var or=class{constructor(t,e){this.input=t,this._backing=e}isVideoTrack(){return this instanceof Fe}isAudioTrack(){return this instanceof te}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}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()}async computePacketStats(t=1/0){let e=new tt(this),r=1/0,n=-1/0,a=0,s=0;for await(let o of e.packets(void 0,void 0,{metadataOnly:!0})){if(a>=t&&o.timestamp>=n)break;r=Math.min(r,o.timestamp),n=Math.max(n,o.timestamp+o.duration),a++,s+=o.byteLength}return{packetCount:a,averagePacketRate:a?Number((a/(n-r)).toPrecision(16)):0,averageBitrate:a?Number((8*s/(n-r)).toPrecision(16)):0}}},Fe=class extends or{constructor(t,e){super(t,e),this._backing=e}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()}async hasHighDynamicRange(){let t=await this._backing.getColorSpace();return t.primaries==="bt2020"||t.primaries==="smpte432"||t.transfer==="pg"||t.transfer==="hlg"||t.matrix==="bt2020-ncl"}canBeTransparent(){return this._backing.canBeTransparent()}getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){return(await this._backing.getDecoderConfig())?.codec??null}async canDecode(){try{let t=await this._backing.getDecoderConfig();if(!t)return!1;let e=this._backing.getCodec();return p(e!==null),Cr.some(n=>n.supports(e,t))?!0:typeof VideoDecoder>"u"?!1:(await VideoDecoder.isConfigSupported(t)).supported===!0}catch(t){return console.error("Error during decodability check:",t),!1}}async determinePacketType(t){if(!(t instanceof W))throw new TypeError("packet must be an EncodedPacket.");if(t.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");if(this.codec===null)return null;let e=await this.getDecoderConfig();return p(e),sn(this.codec,e,t.data)}},te=class extends or{constructor(t,e){super(t,e),this._backing=e}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()}async getCodecParameterString(){return(await this._backing.getDecoderConfig())?.codec??null}async canDecode(){try{let t=await this._backing.getDecoderConfig();if(!t)return!1;let e=this._backing.getCodec();return p(e!==null),Pr.some(r=>r.supports(e,t))||t.codec.startsWith("pcm-")?!0:typeof AudioDecoder>"u"?!1:(await AudioDecoder.isConfigSupported(t)).supported===!0}catch(t){return console.error("Error during decodability check:",t),!1}}async determinePacketType(t){if(!(t instanceof W))throw new TypeError("packet must be an EncodedPacket.");return this.codec===null?null:"key"}};var hn=i=>{let e=(i.hasVideo?"video/":i.hasAudio?"audio/":"application/")+(i.isQuickTime?"quicktime":"mp4");if(i.codecStrings.length>0){let r=[...new Set(i.codecStrings)];e+=`; codecs="${r.join(", ")}"`}return e};var Le=8,kt=16,yt=i=>{let t=A(i),e=re(i,4),r=8;t===1&&(t=Me(i),r=16);let a=t-r;return a<0?null:{name:e,totalSize:t,headerSize:r,contentSize:a}},zt=i=>wt(i)/65536,gn=i=>wt(i)/1073741824,bn=i=>{let t=0;for(let e=0;e<4;e++){t<<=7;let r=R(i);if(t|=r&127,(r&128)===0)break}return t},We=i=>{let t=oe(i);return i.skip(2),t=Math.min(t,i.remainingLength),me.decode(M(i,t))},ic=i=>{let t=yt(i);if(!t||t.name!=="data"||i.remainingLength<8)return null;let e=A(i);i.skip(4);let r=M(i,t.contentSize-8);switch(e){case 1:return me.decode(r);case 2:return new TextDecoder("utf-16be").decode(r);case 13:return new Oe(r,"image/jpeg");case 14:return new Oe(r,"image/png");case 27:return new Oe(r,"image/bmp");default:return r}};var kn=class extends fe{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}async computeDuration(){let e=await this.getTracks(),r=await Promise.all(e.map(n=>n.computeDuration()));return Math.max(0,...r)}async getTracks(){return await this.readMetadata(),this.tracks.map(e=>e.inputTrack)}async getMimeType(){await this.readMetadata();let e=await Promise.all(this.tracks.map(r=>r.inputTrack.getCodecParameterString()));return hn({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(r=>r.info?.type==="video"),hasAudio:this.tracks.some(r=>r.info?.type==="audio"),codecStrings:e.filter(Boolean)})}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}readMetadata(){return this.metadataPromise??=(async()=>{let e=0;for(;;){let r=this.reader.requestSliceRange(e,Le,kt);if(r instanceof Promise&&(r=await r),!r)break;let n=e,a=yt(r);if(!a)break;if(a.name==="ftyp"){let s=re(r,4);this.isQuickTime=s==="qt  "}else if(a.name==="moov"){let s=this.reader.requestSlice(r.filePos,a.contentSize);if(s instanceof Promise&&(s=await s),!s)break;this.moovSlice=s,this.readContiguousBoxes(this.moovSlice),this.tracks.sort((o,c)=>Number(c.disposition.default)-Number(o.disposition.default));for(let o of this.tracks){let c=o.editListPreviousSegmentDurations/this.movieTimescale;o.editListOffset-=Math.round(c*o.timescale)}break}e=n+a.totalSize}if(this.isFragmented&&this.reader.fileSize!==null){let r=this.reader.requestSlice(this.reader.fileSize-4,4);r instanceof Promise&&(r=await r),p(r);let n=A(r),a=this.reader.fileSize-n;if(a>=0&&a<=this.reader.fileSize-kt){let s=this.reader.requestSliceRange(a,Le,kt);if(s instanceof Promise&&(s=await s),s){let o=yt(s);if(o&&o.name==="mfra"){let c=this.reader.requestSlice(s.filePos,o.contentSize);c instanceof Promise&&(c=await c),c&&this.readContiguousBoxes(c)}}}}})()}getSampleTableForTrack(e){if(e.sampleTable)return e.sampleTable;let r={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};e.sampleTable=r,p(this.moovSlice);let n=this.moovSlice.slice(e.sampleTableByteOffset);if(this.currentTrack=e,this.traverseBox(n),this.currentTrack=null,e.info?.type==="audio"&&e.info.codec&&Z.includes(e.info.codec)&&r.sampleCompositionTimeOffsets.length===0){p(e.info?.type==="audio");let s=be(e.info.codec),o=[],c=[];for(let u=0;u<r.sampleToChunk.length;u++){let d=r.sampleToChunk[u],l=r.sampleToChunk[u+1],m=(l?l.startChunkIndex:r.chunkOffsets.length)-d.startChunkIndex;for(let f=0;f<m;f++){let g=d.startSampleIndex+f*d.samplesPerChunk,b=g+d.samplesPerChunk,h=N(r.sampleTimingEntries,g,_=>_.startIndex),y=r.sampleTimingEntries[h],k=N(r.sampleTimingEntries,b,_=>_.startIndex),w=r.sampleTimingEntries[k],S=y.startDecodeTimestamp+(g-y.startIndex)*y.delta,x=w.startDecodeTimestamp+(b-w.startIndex)*w.delta-S,P=K(o);P&&P.delta===x?P.count++:o.push({startIndex:d.startChunkIndex+f,startDecodeTimestamp:S,count:1,delta:x});let C=d.samplesPerChunk*s.sampleSize*e.info.numberOfChannels;c.push(C)}d.startSampleIndex=d.startChunkIndex,d.samplesPerChunk=1}r.sampleTimingEntries=o,r.sampleSizes=c}if(r.sampleCompositionTimeOffsets.length>0){r.presentationTimestamps=[];for(let s of r.sampleTimingEntries)for(let o=0;o<s.count;o++)r.presentationTimestamps.push({presentationTimestamp:s.startDecodeTimestamp+o*s.delta,sampleIndex:s.startIndex+o});for(let s of r.sampleCompositionTimeOffsets)for(let o=0;o<s.count;o++){let c=s.startIndex+o,u=r.presentationTimestamps[c];u&&(u.presentationTimestamp+=s.offset)}r.presentationTimestamps.sort((s,o)=>s.presentationTimestamp-o.presentationTimestamp),r.presentationTimestampIndexMap=Array(r.presentationTimestamps.length).fill(-1);for(let s=0;s<r.presentationTimestamps.length;s++)r.presentationTimestampIndexMap[r.presentationTimestamps[s].sampleIndex]=s}return r}async readFragment(e){if(this.lastReadFragment?.moofOffset===e)return this.lastReadFragment;let r=this.reader.requestSliceRange(e,Le,kt);r instanceof Promise&&(r=await r),p(r);let n=yt(r);p(n?.name==="moof");let a=this.reader.requestSlice(e,n.totalSize);a instanceof Promise&&(a=await a),p(a),this.traverseBox(a);let s=this.lastReadFragment;p(s&&s.moofOffset===e);for(let[,o]of s.trackData){let c=o.track,{fragmentPositionCache:u}=c;if(!o.startTimestampIsFinal){let l=c.fragmentLookupTable.find(m=>m.moofOffset===s.moofOffset);if(l)ts(o,l.timestamp);else{let m=N(u,s.moofOffset-1,f=>f.moofOffset);if(m!==-1){let f=u[m];ts(o,f.endTimestamp)}}o.startTimestampIsFinal=!0}let d=N(u,o.startTimestamp,l=>l.startTimestamp);(d===-1||u[d].moofOffset!==s.moofOffset)&&u.splice(d+1,0,{moofOffset:s.moofOffset,startTimestamp:o.startTimestamp,endTimestamp:o.endTimestamp})}return s}readContiguousBoxes(e){let r=e.filePos;for(;e.filePos-r<=e.length-Le&&this.traverseBox(e););}*iterateContiguousBoxes(e){let r=e.filePos;for(;e.filePos-r<=e.length-Le;){let n=e.filePos,a=yt(e);if(!a)break;yield{boxInfo:a,slice:e},e.filePos=n+a.totalSize}}traverseBox(e){let r=e.filePos,n=yt(e);if(!n)return!1;let a=e.filePos,s=r+n.totalSize;switch(n.name){case"mdia":case"minf":case"dinf":case"mfra":case"edts":this.readContiguousBoxes(e.slice(a,n.contentSize));break;case"mvhd":{let o=R(e);e.skip(3),o===1?(e.skip(16),this.movieTimescale=A(e),this.movieDurationInTimescale=Me(e)):(e.skip(8),this.movieTimescale=A(e),this.movieDurationInTimescale=A(e))}break;case"trak":{let o={id:-1,demuxer:this,inputTrack:null,disposition:{...we},info:null,timescale:-1,durationInMovieTimescale:-1,durationInMediaTimescale:-1,rotation:0,internalCodecId:null,name:null,languageCode:ee,sampleTableByteOffset:-1,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:0,editListOffset:0};if(this.currentTrack=o,this.readContiguousBoxes(e.slice(a,n.contentSize)),o.id!==-1&&o.timescale!==-1&&o.info!==null){if(o.info.type==="video"&&o.info.width!==-1){let c=o;o.inputTrack=new Fe(this.input,new rs(c)),this.tracks.push(o)}else if(o.info.type==="audio"&&o.info.numberOfChannels!==-1){let c=o;o.inputTrack=new te(this.input,new is(c)),this.tracks.push(o)}}this.currentTrack=null}break;case"tkhd":{let o=this.currentTrack;if(!o)break;let c=R(e),d=!!(Nt(e)&1);if(o.disposition.default=d,c===0)e.skip(8),o.id=A(e),e.skip(4),o.durationInMovieTimescale=A(e);else if(c===1)e.skip(16),o.id=A(e),e.skip(4),o.durationInMovieTimescale=Me(e);else throw new Error(`Incorrect track header version ${c}.`);e.skip(2*4+2+2+2+2);let l=[zt(e),zt(e),gn(e),zt(e),zt(e),gn(e),zt(e),zt(e),gn(e)],m=_t(Zr(Zu(l),90));p(m===0||m===90||m===180||m===270),o.rotation=m}break;case"elst":{let o=this.currentTrack;if(!o)break;let c=R(e);e.skip(3);let u=!1,d=0,l=A(e);for(let m=0;m<l;m++){let f=c===1?Me(e):A(e),g=c===1?sc(e):wt(e),b=zt(e);if(f!==0){if(u){console.warn("Unsupported edit list: multiple edits are not currently supported. Only using first edit.");break}if(g===-1){d+=f;continue}if(b!==1){console.warn("Unsupported edit list entry: media rate must be 1.");break}o.editListPreviousSegmentDurations=d,o.editListOffset=g,u=!0}}}break;case"mdhd":{let o=this.currentTrack;if(!o)break;let c=R(e);e.skip(3),c===0?(e.skip(8),o.timescale=A(e),o.durationInMediaTimescale=A(e)):c===1&&(e.skip(16),o.timescale=A(e),o.durationInMediaTimescale=Me(e));let u=oe(e);if(u>0){o.languageCode="";for(let d=0;d<3;d++)o.languageCode=String.fromCharCode(96+(u&31))+o.languageCode,u>>=5;lt(o.languageCode)||(o.languageCode=ee)}}break;case"hdlr":{let o=this.currentTrack;if(!o)break;e.skip(8);let c=re(e,4);c==="vide"?o.info={type:"video",width:-1,height:-1,codec:null,codecDescription:null,colorSpace:null,avcType:null,avcCodecInfo:null,hevcCodecInfo:null,vp9CodecInfo:null,av1CodecInfo:null}:c==="soun"&&(o.info={type:"audio",numberOfChannels:-1,sampleRate:-1,codec:null,codecDescription:null,aacCodecInfo:null})}break;case"stbl":{let o=this.currentTrack;if(!o)break;o.sampleTableByteOffset=r,this.readContiguousBoxes(e.slice(a,n.contentSize))}break;case"stsd":{let o=this.currentTrack;if(!o||o.info===null||o.sampleTable)break;let c=R(e);e.skip(3);let u=A(e);for(let d=0;d<u;d++){let l=e.filePos,m=yt(e);if(!m)break;o.internalCodecId=m.name;let f=m.name.toLowerCase();if(o.info.type==="video")f==="avc1"||f==="avc3"?(o.info.codec="avc",o.info.avcType=f==="avc1"?1:3):f==="hvc1"||f==="hev1"?o.info.codec="hevc":f==="vp08"?o.info.codec="vp8":f==="vp09"?o.info.codec="vp9":f==="av01"?o.info.codec="av1":console.warn(`Unsupported video codec (sample entry type '${m.name}').`),e.skip(6*1+2+2+2+3*4),o.info.width=oe(e),o.info.height=oe(e),e.skip(50),this.readContiguousBoxes(e.slice(e.filePos,l+m.totalSize-e.filePos));else{f==="mp4a"||(f==="opus"?o.info.codec="opus":f==="flac"?o.info.codec="flac":f==="twos"||f==="sowt"||f==="raw "||f==="in24"||f==="in32"||f==="fl32"||f==="fl64"||f==="lpcm"||f==="ipcm"||f==="fpcm"||(f==="ulaw"?o.info.codec="ulaw":f==="alaw"?o.info.codec="alaw":f==="ac-3"?o.info.codec="ac3":f==="ec-3"?o.info.codec="eac3":console.warn(`Unsupported audio codec (sample entry type '${m.name}').`))),e.skip(6*1+2);let g=oe(e);e.skip(3*2);let b=oe(e),h=oe(e);e.skip(2*2);let y=A(e)/65536;if(c===0&&g>0){if(g===1)e.skip(4),h=8*A(e),e.skip(2*4);else if(g===2){e.skip(4),y=wn(e),b=A(e),e.skip(4),h=A(e);let k=A(e);if(e.skip(2*4),f==="lpcm"){let w=h+7>>3,S=!!(k&1),T=!!(k&2),x=k&4?-1:0;h>0&&h<=64&&(S?h===32&&(o.info.codec=T?"pcm-f32be":"pcm-f32"):x&1<<w-1?w===1?o.info.codec="pcm-s8":w===2?o.info.codec=T?"pcm-s16be":"pcm-s16":w===3?o.info.codec=T?"pcm-s24be":"pcm-s24":w===4&&(o.info.codec=T?"pcm-s32be":"pcm-s32"):w===1&&(o.info.codec="pcm-u8")),o.info.codec===null&&console.warn("Unsupported PCM format.")}}}o.info.codec==="opus"&&(y=Ne),o.info.numberOfChannels=b,o.info.sampleRate=y,f==="twos"?h===8?o.info.codec="pcm-s8":h===16?o.info.codec="pcm-s16be":(console.warn(`Unsupported sample size ${h} for codec 'twos'.`),o.info.codec=null):f==="sowt"?h===8?o.info.codec="pcm-s8":h===16?o.info.codec="pcm-s16":(console.warn(`Unsupported sample size ${h} for codec 'sowt'.`),o.info.codec=null):f==="raw "?o.info.codec="pcm-u8":f==="in24"?o.info.codec="pcm-s24be":f==="in32"?o.info.codec="pcm-s32be":f==="fl32"?o.info.codec="pcm-f32be":f==="fl64"?o.info.codec="pcm-f64be":f==="ipcm"?o.info.codec="pcm-s16be":f==="fpcm"&&(o.info.codec="pcm-f32be"),this.readContiguousBoxes(e.slice(e.filePos,l+m.totalSize-e.filePos))}}}break;case"avcC":{let o=this.currentTrack;if(!o)break;p(o.info),o.info.codecDescription=M(e,n.contentSize)}break;case"hvcC":{let o=this.currentTrack;if(!o)break;p(o.info),o.info.codecDescription=M(e,n.contentSize)}break;case"vpcC":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="video"),e.skip(4);let c=R(e),u=R(e),d=R(e),l=d>>4,m=d>>1&7,f=d&1,g=R(e),b=R(e),h=R(e);o.info.vp9CodecInfo={profile:c,level:u,bitDepth:l,chromaSubsampling:m,videoFullRangeFlag:f,colourPrimaries:g,transferCharacteristics:b,matrixCoefficients:h}}break;case"av1C":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="video"),e.skip(1);let c=R(e),u=c>>5,d=c&31,l=R(e),m=l>>7,f=l>>6&1,g=l>>5&1,b=l>>4&1,h=l>>3&1,y=l>>2&1,k=l&3,w=u===2&&f?g?12:10:f?10:8;o.info.av1CodecInfo={profile:u,level:d,tier:m,bitDepth:w,monochrome:b,chromaSubsamplingX:h,chromaSubsamplingY:y,chromaSamplePosition:k}}break;case"colr":{let o=this.currentTrack;if(!o||(p(o.info?.type==="video"),re(e,4)!=="nclx"))break;let u=oe(e),d=oe(e),l=oe(e),m=!!(R(e)&128);o.info.colorSpace={primaries:Gt[u],transfer:Qt[d],matrix:$t[l],fullRange:m}}break;case"wave":this.readContiguousBoxes(e.slice(a,n.contentSize));break;case"esds":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="audio"),e.skip(4);let c=R(e);p(c===3),bn(e),e.skip(2);let u=R(e),d=(u&128)!==0,l=(u&64)!==0,m=(u&32)!==0;if(d&&e.skip(2),l){let y=R(e);e.skip(y)}m&&e.skip(2);let f=R(e);p(f===4);let g=bn(e),b=e.filePos,h=R(e);if(h===64||h===103?(o.info.codec="aac",o.info.aacCodecInfo={isMpeg2:h===103,objectType:null}):h===105||h===107?o.info.codec="mp3":h===221?o.info.codec="vorbis":console.warn(`Unsupported audio codec (objectTypeIndication ${h}) - discarding track.`),e.skip(12),g>e.filePos-b){let y=R(e);p(y===5);let k=bn(e);if(o.info.codecDescription=M(e,k),o.info.codec==="aac"){let w=ht(o.info.codecDescription);w.numberOfChannels!==null&&(o.info.numberOfChannels=w.numberOfChannels),w.sampleRate!==null&&(o.info.sampleRate=w.sampleRate)}}}break;case"enda":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="audio"),oe(e)&255&&(o.info.codec==="pcm-s16be"?o.info.codec="pcm-s16":o.info.codec==="pcm-s24be"?o.info.codec="pcm-s24":o.info.codec==="pcm-s32be"?o.info.codec="pcm-s32":o.info.codec==="pcm-f32be"?o.info.codec="pcm-f32":o.info.codec==="pcm-f64be"&&(o.info.codec="pcm-f64"))}break;case"pcmC":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="audio"),e.skip(4);let u=!!(R(e)&1),d=R(e);o.info.codec==="pcm-s16be"?u?d===16?o.info.codec="pcm-s16":d===24?o.info.codec="pcm-s24":d===32?o.info.codec="pcm-s32":(console.warn(`Invalid ipcm sample size ${d}.`),o.info.codec=null):d===16?o.info.codec="pcm-s16be":d===24?o.info.codec="pcm-s24be":d===32?o.info.codec="pcm-s32be":(console.warn(`Invalid ipcm sample size ${d}.`),o.info.codec=null):o.info.codec==="pcm-f32be"&&(u?d===32?o.info.codec="pcm-f32":d===64?o.info.codec="pcm-f64":(console.warn(`Invalid fpcm sample size ${d}.`),o.info.codec=null):d===32?o.info.codec="pcm-f32be":d===64?o.info.codec="pcm-f64be":(console.warn(`Invalid fpcm sample size ${d}.`),o.info.codec=null));break}case"dOps":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="audio"),e.skip(1);let c=R(e),u=oe(e),d=A(e),l=hi(e),m=R(e),f;m!==0?f=M(e,2+c):f=new Uint8Array(0);let g=new Uint8Array(19+f.byteLength),b=new DataView(g.buffer);b.setUint32(0,1332770163,!1),b.setUint32(4,1214603620,!1),b.setUint8(8,1),b.setUint8(9,c),b.setUint16(10,u,!0),b.setUint32(12,d,!0),b.setInt16(16,l,!0),b.setUint8(18,m),g.set(f,19),o.info.codecDescription=g,o.info.numberOfChannels=c}break;case"dfLa":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="audio"),e.skip(4);let c=127,u=128,d=e.filePos;for(;e.filePos<s;){let b=R(e),h=Nt(e);if((b&c)===0){e.skip(10);let k=A(e),w=k>>>12,S=(k>>9&7)+1;o.info.sampleRate=w,o.info.numberOfChannels=S,e.skip(20)}else e.skip(h);if(b&u)break}let l=e.filePos;e.filePos=d;let m=M(e,l-d),f=new Uint8Array(4+m.byteLength);new DataView(f.buffer).setUint32(0,1716281667,!1),f.set(m,4),o.info.codecDescription=f}break;case"dac3":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="audio");let c=M(e,3),u=new V(c),d=u.readBits(2);u.skipBits(8);let l=u.readBits(3),m=u.readBits(1);d<3&&(o.info.sampleRate=er[d]),o.info.numberOfChannels=ai[l]+m}break;case"dec3":{let o=this.currentTrack;if(!o)break;p(o.info?.type==="audio");let c=M(e,n.contentSize),u=jo(c);if(!u){console.warn("Invalid dec3 box contents, ignoring.");break}let d=un(u);d!==null&&(o.info.sampleRate=d),o.info.numberOfChannels=dn(u)}break;case"stts":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=A(e),u=0,d=0;for(let l=0;l<c;l++){let m=A(e),f=A(e);o.sampleTable.sampleTimingEntries.push({startIndex:u,startDecodeTimestamp:d,count:m,delta:f}),u+=m,d+=m*f}}break;case"ctts":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=A(e),u=0;for(let d=0;d<c;d++){let l=A(e),m=wt(e);o.sampleTable.sampleCompositionTimeOffsets.push({startIndex:u,count:l,offset:m}),u+=l}}break;case"stsz":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=A(e),u=A(e);if(c===0)for(let d=0;d<u;d++){let l=A(e);o.sampleTable.sampleSizes.push(l)}else o.sampleTable.sampleSizes.push(c)}break;case"stz2":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4),e.skip(3);let c=R(e),u=A(e),d=M(e,Math.ceil(u*c/8)),l=new V(d);for(let m=0;m<u;m++){let f=l.readBits(c);o.sampleTable.sampleSizes.push(f)}}break;case"stss":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4),o.sampleTable.keySampleIndices=[];let c=A(e);for(let u=0;u<c;u++){let d=A(e)-1;o.sampleTable.keySampleIndices.push(d)}o.sampleTable.keySampleIndices[0]!==0&&o.sampleTable.keySampleIndices.unshift(0)}break;case"stsc":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=A(e);for(let d=0;d<c;d++){let l=A(e)-1,m=A(e),f=A(e);o.sampleTable.sampleToChunk.push({startSampleIndex:-1,startChunkIndex:l,samplesPerChunk:m,sampleDescriptionIndex:f})}let u=0;for(let d=0;d<o.sampleTable.sampleToChunk.length;d++)if(o.sampleTable.sampleToChunk[d].startSampleIndex=u,d<o.sampleTable.sampleToChunk.length-1){let m=o.sampleTable.sampleToChunk[d+1].startChunkIndex-o.sampleTable.sampleToChunk[d].startChunkIndex;u+=m*o.sampleTable.sampleToChunk[d].samplesPerChunk}}break;case"stco":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=A(e);for(let u=0;u<c;u++){let d=A(e);o.sampleTable.chunkOffsets.push(d)}}break;case"co64":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=A(e);for(let u=0;u<c;u++){let d=Me(e);o.sampleTable.chunkOffsets.push(d)}}break;case"mvex":this.isFragmented=!0,this.readContiguousBoxes(e.slice(a,n.contentSize));break;case"mehd":{let o=R(e);e.skip(3);let c=o===1?Me(e):A(e);this.movieDurationInTimescale=c}break;case"trex":{e.skip(4);let o=A(e),c=A(e),u=A(e),d=A(e),l=A(e);this.fragmentTrackDefaults.push({trackId:o,defaultSampleDescriptionIndex:c,defaultSampleDuration:u,defaultSampleSize:d,defaultSampleFlags:l})}break;case"tfra":{let o=R(e);e.skip(3);let c=A(e),u=this.tracks.find(w=>w.id===c);if(!u)break;let d=A(e),l=(d&48)>>4,m=(d&12)>>2,f=d&3,g=[R,oe,Nt,A],b=g[l],h=g[m],y=g[f],k=A(e);for(let w=0;w<k;w++){let S=o===1?Me(e):A(e),T=o===1?Me(e):A(e);b(e),h(e),y(e),u.fragmentLookupTable.push({timestamp:S,moofOffset:T})}u.fragmentLookupTable.sort((w,S)=>w.timestamp-S.timestamp);for(let w=0;w<u.fragmentLookupTable.length-1;w++){let S=u.fragmentLookupTable[w],T=u.fragmentLookupTable[w+1];S.timestamp===T.timestamp&&(u.fragmentLookupTable.splice(w+1,1),w--)}}break;case"moof":this.currentFragment={moofOffset:r,moofSize:n.totalSize,implicitBaseDataOffset:r,trackData:new Map},this.readContiguousBoxes(e.slice(a,n.contentSize)),this.lastReadFragment=this.currentFragment,this.currentFragment=null;break;case"traf":if(p(this.currentFragment),this.readContiguousBoxes(e.slice(a,n.contentSize)),this.currentTrack){let o=this.currentFragment.trackData.get(this.currentTrack.id);if(o){let{currentFragmentState:c}=this.currentTrack;p(c),c.startTimestamp!==null&&(ts(o,c.startTimestamp),o.startTimestampIsFinal=!0)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"tfhd":{p(this.currentFragment),e.skip(1);let o=Nt(e),c=!!(o&1),u=!!(o&2),d=!!(o&8),l=!!(o&16),m=!!(o&32),f=!!(o&65536),g=!!(o&131072),b=A(e),h=this.tracks.find(k=>k.id===b);if(!h)break;let y=this.fragmentTrackDefaults.find(k=>k.trackId===b);this.currentTrack=h,h.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:y?.defaultSampleDescriptionIndex??null,defaultSampleDuration:y?.defaultSampleDuration??null,defaultSampleSize:y?.defaultSampleSize??null,defaultSampleFlags:y?.defaultSampleFlags??null,startTimestamp:null},c?h.currentFragmentState.baseDataOffset=Me(e):g&&(h.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),u&&(h.currentFragmentState.sampleDescriptionIndex=A(e)),d&&(h.currentFragmentState.defaultSampleDuration=A(e)),l&&(h.currentFragmentState.defaultSampleSize=A(e)),m&&(h.currentFragmentState.defaultSampleFlags=A(e)),f&&(h.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{let o=this.currentTrack;if(!o)break;p(o.currentFragmentState);let c=R(e);e.skip(3);let u=c===0?A(e):Me(e);o.currentFragmentState.startTimestamp=u}break;case"trun":{let o=this.currentTrack;if(!o)break;if(p(this.currentFragment),p(o.currentFragmentState),this.currentFragment.trackData.has(o.id)){console.warn("Can't have two trun boxes for the same track in one fragment. Ignoring...");break}let c=R(e),u=Nt(e),d=!!(u&1),l=!!(u&4),m=!!(u&256),f=!!(u&512),g=!!(u&1024),b=!!(u&2048),h=A(e),y=o.currentFragmentState.baseDataOffset;d&&(y+=wt(e));let k=null;l&&(k=A(e));let w=y;if(h===0){this.currentFragment.implicitBaseDataOffset=w;break}let S=0,T={track:o,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1};this.currentFragment.trackData.set(o.id,T);for(let C=0;C<h;C++){let _;m?_=A(e):(p(o.currentFragmentState.defaultSampleDuration!==null),_=o.currentFragmentState.defaultSampleDuration);let B;f?B=A(e):(p(o.currentFragmentState.defaultSampleSize!==null),B=o.currentFragmentState.defaultSampleSize);let E;g?E=A(e):(p(o.currentFragmentState.defaultSampleFlags!==null),E=o.currentFragmentState.defaultSampleFlags),C===0&&k!==null&&(E=k);let F=0;b&&(c===0?F=A(e):F=wt(e));let z=!(E&65536);T.samples.push({presentationTimestamp:S+F,duration:_,byteOffset:w,byteSize:B,isKeyFrame:z}),w+=B,S+=_}T.presentationTimestamps=T.samples.map((C,_)=>({presentationTimestamp:C.presentationTimestamp,sampleIndex:_})).sort((C,_)=>C.presentationTimestamp-_.presentationTimestamp);for(let C=0;C<T.presentationTimestamps.length;C++){let _=T.presentationTimestamps[C],B=T.samples[_.sampleIndex];if(T.firstKeyFrameTimestamp===null&&B.isKeyFrame&&(T.firstKeyFrameTimestamp=B.presentationTimestamp),C<T.presentationTimestamps.length-1){let E=T.presentationTimestamps[C+1];B.duration=E.presentationTimestamp-_.presentationTimestamp}}let x=T.samples[T.presentationTimestamps[0].sampleIndex],P=T.samples[K(T.presentationTimestamps).sampleIndex];T.startTimestamp=x.presentationTimestamp,T.endTimestamp=P.presentationTimestamp+P.duration,this.currentFragment.implicitBaseDataOffset=w}break;case"udta":{let o=this.iterateContiguousBoxes(e.slice(a,n.contentSize));for(let{boxInfo:c,slice:u}of o){if(c.name!=="meta"&&!this.currentTrack){let d=u.filePos;this.metadataTags.raw??={},c.name[0]==="\xA9"?this.metadataTags.raw[c.name]??=We(u):this.metadataTags.raw[c.name]??=M(u,c.contentSize),u.filePos=d}switch(c.name){case"meta":u.skip(-c.headerSize),this.traverseBox(u);break;case"\xA9nam":case"name":this.currentTrack?this.currentTrack.name=me.decode(M(u,c.contentSize)):this.metadataTags.title??=We(u);break;case"\xA9des":this.currentTrack||(this.metadataTags.description??=We(u));break;case"\xA9ART":this.currentTrack||(this.metadataTags.artist??=We(u));break;case"\xA9alb":this.currentTrack||(this.metadataTags.album??=We(u));break;case"albr":this.currentTrack||(this.metadataTags.albumArtist??=We(u));break;case"\xA9gen":this.currentTrack||(this.metadataTags.genre??=We(u));break;case"\xA9day":if(!this.currentTrack){let d=new Date(We(u));Number.isNaN(d.getTime())||(this.metadataTags.date??=d)}break;case"\xA9cmt":this.currentTrack||(this.metadataTags.comment??=We(u));break;case"\xA9lyr":this.currentTrack||(this.metadataTags.lyrics??=We(u));break}}}break;case"meta":{if(this.currentTrack)break;let c=A(e)!==0;this.currentMetadataKeys=new Map,c?this.readContiguousBoxes(e.slice(a,n.contentSize)):this.readContiguousBoxes(e.slice(a+4,n.contentSize-4)),this.currentMetadataKeys=null}break;case"keys":{if(!this.currentMetadataKeys)break;e.skip(4);let o=A(e);for(let c=0;c<o;c++){let u=A(e);e.skip(4);let d=me.decode(M(e,u-8));this.currentMetadataKeys.set(c+1,d)}}break;case"ilst":{if(!this.currentMetadataKeys)break;let o=this.iterateContiguousBoxes(e.slice(a,n.contentSize));for(let{boxInfo:c,slice:u}of o){let d=c.name,l=(d.charCodeAt(0)<<24)+(d.charCodeAt(1)<<16)+(d.charCodeAt(2)<<8)+d.charCodeAt(3);this.currentMetadataKeys.has(l)&&(d=this.currentMetadataKeys.get(l));let m=ic(u);switch(this.metadataTags.raw??={},this.metadataTags.raw[d]??=m,d){case"\xA9nam":case"titl":case"com.apple.quicktime.title":case"title":typeof m=="string"&&(this.metadataTags.title??=m);break;case"\xA9des":case"desc":case"dscp":case"com.apple.quicktime.description":case"description":typeof m=="string"&&(this.metadataTags.description??=m);break;case"\xA9ART":case"com.apple.quicktime.artist":case"artist":typeof m=="string"&&(this.metadataTags.artist??=m);break;case"\xA9alb":case"albm":case"com.apple.quicktime.album":case"album":typeof m=="string"&&(this.metadataTags.album??=m);break;case"aART":case"album_artist":typeof m=="string"&&(this.metadataTags.albumArtist??=m);break;case"\xA9cmt":case"com.apple.quicktime.comment":case"comment":typeof m=="string"&&(this.metadataTags.comment??=m);break;case"\xA9gen":case"gnre":case"com.apple.quicktime.genre":case"genre":typeof m=="string"&&(this.metadataTags.genre??=m);break;case"\xA9lyr":case"lyrics":typeof m=="string"&&(this.metadataTags.lyrics??=m);break;case"\xA9day":case"rldt":case"com.apple.quicktime.creationdate":case"date":if(typeof m=="string"){let f=new Date(m);Number.isNaN(f.getTime())||(this.metadataTags.date??=f)}break;case"covr":case"com.apple.quicktime.artwork":m instanceof Oe?(this.metadataTags.images??=[],this.metadataTags.images.push({data:m.data,kind:"coverFront",mimeType:m.mimeType})):m instanceof Uint8Array&&(this.metadataTags.images??=[],this.metadataTags.images.push({data:m,kind:"coverFront",mimeType:"image/*"}));break;case"track":if(typeof m=="string"){let f=m.split("/"),g=Number.parseInt(f[0],10),b=f[1]&&Number.parseInt(f[1],10);Number.isInteger(g)&&g>0&&(this.metadataTags.trackNumber??=g),b&&Number.isInteger(b)&&b>0&&(this.metadataTags.tracksTotal??=b)}break;case"trkn":if(m instanceof Uint8Array&&m.length>=6){let f=D(m),g=f.getUint16(2,!1),b=f.getUint16(4,!1);g>0&&(this.metadataTags.trackNumber??=g),b>0&&(this.metadataTags.tracksTotal??=b)}break;case"disc":case"disk":if(m instanceof Uint8Array&&m.length>=6){let f=D(m),g=f.getUint16(2,!1),b=f.getUint16(4,!1);g>0&&(this.metadataTags.discNumber??=g),b>0&&(this.metadataTags.discsTotal??=b)}break}}}break}return e.filePos=s,!0}},yn=class{constructor(t){this.internalTrack=t;this.packetToSampleIndex=new WeakMap;this.packetToFragmentLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){let t=this.internalTrack.demuxer,r=this.internalTrack.inputTrack.type,n=0;for(let a of t.tracks)if(a.inputTrack.type===r&&n++,a===this.internalTrack)break;return n}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}async computeDuration(){let t=await this.getPacket(1/0,{metadataOnly:!0});return(t?.timestamp??0)+(t?.duration??0)}async getFirstTimestamp(){return(await this.getFirstPacket({metadataOnly:!0}))?.timestamp??0}async getFirstPacket(t){let e=await this.fetchPacketForSampleIndex(0,t);return e||!this.internalTrack.demuxer.isFragmented?e:this.performFragmentedLookup(null,r=>r.trackData.get(this.internalTrack.id)?{sampleIndex:0,correctSampleFound:!0}:{sampleIndex:-1,correctSampleFound:!1},-1/0,1/0,t)}mapTimestampIntoTimescale(t){return dt(t*this.internalTrack.timescale)+this.internalTrack.editListOffset}async getPacket(t,e){let r=this.mapTimestampIntoTimescale(t),n=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=ns(n,r),s=await this.fetchPacketForSampleIndex(a,e);return!nc(n)||!this.internalTrack.demuxer.isFragmented?s:this.performFragmentedLookup(null,o=>{let c=o.trackData.get(this.internalTrack.id);if(!c)return{sampleIndex:-1,correctSampleFound:!1};let u=N(c.presentationTimestamps,r,m=>m.presentationTimestamp),d=u!==-1?c.presentationTimestamps[u].sampleIndex:-1,l=u!==-1&&r<c.endTimestamp;return{sampleIndex:d,correctSampleFound:l}},r,r,e)}async getNextPacket(t,e){let r=this.packetToSampleIndex.get(t);if(r!==void 0)return this.fetchPacketForSampleIndex(r+1,e);let n=this.packetToFragmentLocation.get(t);if(n===void 0)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(n.fragment,a=>{if(a===n.fragment){let s=a.trackData.get(this.internalTrack.id);if(n.sampleIndex+1<s.samples.length)return{sampleIndex:n.sampleIndex+1,correctSampleFound:!0}}else if(a.trackData.get(this.internalTrack.id))return{sampleIndex:0,correctSampleFound:!0};return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,e)}async getKeyPacket(t,e){let r=this.mapTimestampIntoTimescale(t),n=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=$u(n,r),s=await this.fetchPacketForSampleIndex(a,e);return!nc(n)||!this.internalTrack.demuxer.isFragmented?s:this.performFragmentedLookup(null,o=>{let c=o.trackData.get(this.internalTrack.id);if(!c)return{sampleIndex:-1,correctSampleFound:!1};let u=gr(c.presentationTimestamps,m=>c.samples[m.sampleIndex].isKeyFrame&&m.presentationTimestamp<=r),d=u!==-1?c.presentationTimestamps[u].sampleIndex:-1,l=u!==-1&&r<c.endTimestamp;return{sampleIndex:d,correctSampleFound:l}},r,r,e)}async getNextKeyPacket(t,e){let r=this.packetToSampleIndex.get(t);if(r!==void 0){let a=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),s=Yu(a,r);return this.fetchPacketForSampleIndex(s,e)}let n=this.packetToFragmentLocation.get(t);if(n===void 0)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(n.fragment,a=>{if(a===n.fragment){let o=a.trackData.get(this.internalTrack.id).samples.findIndex((c,u)=>c.isKeyFrame&&u>n.sampleIndex);if(o!==-1)return{sampleIndex:o,correctSampleFound:!0}}else{let s=a.trackData.get(this.internalTrack.id);if(s&&s.firstKeyFrameTimestamp!==null){let o=s.samples.findIndex(c=>c.isKeyFrame);return p(o!==-1),{sampleIndex:o,correctSampleFound:!0}}}return{sampleIndex:-1,correctSampleFound:!1}},-1/0,1/0,e)}async fetchPacketForSampleIndex(t,e){if(t===-1)return null;let r=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),n=Xu(r,t);if(!n)return null;let a;if(e.metadataOnly)a=se;else{let u=this.internalTrack.demuxer.reader.requestSlice(n.sampleOffset,n.sampleSize);u instanceof Promise&&(u=await u),p(u),a=M(u,n.sampleSize)}let s=(n.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,o=n.duration/this.internalTrack.timescale,c=new W(a,n.isKeyFrame?"key":"delta",s,o,t,n.sampleSize);return this.packetToSampleIndex.set(c,t),c}async fetchPacketInFragment(t,e,r){if(e===-1)return null;let a=t.trackData.get(this.internalTrack.id).samples[e];p(a);let s;if(r.metadataOnly)s=se;else{let d=this.internalTrack.demuxer.reader.requestSlice(a.byteOffset,a.byteSize);d instanceof Promise&&(d=await d),p(d),s=M(d,a.byteSize)}let o=(a.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,c=a.duration/this.internalTrack.timescale,u=new W(s,a.isKeyFrame?"key":"delta",o,c,t.moofOffset+e,a.byteSize);return this.packetToFragmentLocation.set(u,{fragment:t,sampleIndex:e}),u}async performFragmentedLookup(t,e,r,n,a){let s=this.internalTrack.demuxer,o=null,c=null,u=-1;if(t){let{sampleIndex:h,correctSampleFound:y}=e(t);if(y)return this.fetchPacketInFragment(t,h,a);h!==-1&&(c=t,u=h)}let d=N(this.internalTrack.fragmentLookupTable,r,h=>h.timestamp),l=d!==-1?this.internalTrack.fragmentLookupTable[d]:null,m=N(this.internalTrack.fragmentPositionCache,r,h=>h.startTimestamp),f=m!==-1?this.internalTrack.fragmentPositionCache[m]:null,g=Math.max(l?.moofOffset??0,f?.moofOffset??0)||null,b;for(t?g===null||t.moofOffset>=g?(b=t.moofOffset+t.moofSize,o=t):b=g:b=g??0;;){if(o){let w=o.trackData.get(this.internalTrack.id);if(w&&w.startTimestamp>n)break}let h=s.reader.requestSliceRange(b,Le,kt);if(h instanceof Promise&&(h=await h),!h)break;let y=b,k=yt(h);if(!k)break;if(k.name==="moof"){o=await s.readFragment(y);let{sampleIndex:w,correctSampleFound:S}=e(o);if(S)return this.fetchPacketInFragment(o,w,a);w!==-1&&(c=o,u=w)}b=y+k.totalSize}if(l&&(!c||c.moofOffset<l.moofOffset)){let h=this.internalTrack.fragmentLookupTable[d-1];p(!h||h.timestamp<l.timestamp);let y=h?.timestamp??-1/0;return this.performFragmentedLookup(null,e,y,n,a)}return c?this.fetchPacketInFragment(c,u,a):null}},rs=class extends yn{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}async getColorSpace(){return{primaries:this.internalTrack.info.colorSpace?.primaries,transfer:this.internalTrack.info.colorSpace?.transfer,matrix:this.internalTrack.info.colorSpace?.matrix,fullRange:this.internalTrack.info.colorSpace?.fullRange}}async canBeTransparent(){return!1}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??=(async()=>{if(this.internalTrack.info.codec==="vp9"&&!this.internalTrack.info.vp9CodecInfo){let e=await this.getFirstPacket({});this.internalTrack.info.vp9CodecInfo=e&&rn(e.data)}else if(this.internalTrack.info.codec==="av1"&&!this.internalTrack.info.av1CodecInfo){let e=await this.getFirstPacket({});this.internalTrack.info.av1CodecInfo=e&&nn(e.data)}return{codec:br(this.internalTrack.info),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace??void 0}})():null}},is=class extends yn{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}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfig??={codec:kr(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}:null}},ns=(i,t)=>{if(i.presentationTimestamps){let e=N(i.presentationTimestamps,t,r=>r.presentationTimestamp);return e===-1?-1:i.presentationTimestamps[e].sampleIndex}else{let e=N(i.sampleTimingEntries,t,n=>n.startDecodeTimestamp);if(e===-1)return-1;let r=i.sampleTimingEntries[e];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},$u=(i,t)=>{if(!i.keySampleIndices)return ns(i,t);if(i.presentationTimestamps){let e=N(i.presentationTimestamps,t,r=>r.presentationTimestamp);if(e===-1)return-1;for(let r=e;r>=0;r--){let n=i.presentationTimestamps[r].sampleIndex;if(ut(i.keySampleIndices,n,s=>s)!==-1)return n}return-1}else{let e=ns(i,t),r=N(i.keySampleIndices,e,n=>n);return i.keySampleIndices[r]??-1}},Xu=(i,t)=>{let e=N(i.sampleTimingEntries,t,y=>y.startIndex),r=i.sampleTimingEntries[e];if(!r||r.startIndex+r.count<=t)return null;let a=r.startDecodeTimestamp+(t-r.startIndex)*r.delta,s=N(i.sampleCompositionTimeOffsets,t,y=>y.startIndex),o=i.sampleCompositionTimeOffsets[s];o&&t-o.startIndex<o.count&&(a+=o.offset);let 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i.remainingLength<e?null:e},Mr=i=>{if(i.remainingLength<1)return null;let t=R(i);if(t===0)return null;let e=1,r=128;for(;(t&r)===0;)e++,r>>=1;if(i.remainingLength<e-1)return null;let n=t&r-1;for(let a=1;a<e;a++)n*=256,n+=R(i);return n},L=(i,t)=>{if(t<1||t>8)throw new Error("Bad unsigned int size "+t);let e=0;for(let r=0;r<t;r++)e*=256,e+=R(i);return e},dc=(i,t)=>{if(t<1)throw new Error("Bad unsigned int size "+t);let e=0n;for(let r=0;r<t;r++)e<<=8n,e+=BigInt(R(i));return e};var Sn=i=>{let t=ss(i);return t===null||i.remainingLength<t?null:L(i,t)},os=i=>{if(i.remainingLength<1)return null;if(R(i)===255)return;i.skip(-1);let e=Mr(i);if(e===null)return null;if(e!==72057594037927940)return e},je=i=>{p(i.remainingLength>=Ie);let t=Sn(i);if(t===null)return null;let e=os(i);return e===null?null:{id:t,size:e}},Lt=(i,t)=>{let e=M(i,t),r=0;for(;r<t&&e[r]!==0;)r+=1;return String.fromCharCode(...e.subarray(0,r))},Rr=(i,t)=>{let e=M(i,t),r=0;for(;r<t&&e[r]!==0;)r+=1;return me.decode(e.subarray(0,r))},xn=(i,t)=>{if(t===0)return 0;if(t!==4&&t!==8)throw new Error("Bad float size "+t);return t===4?lc(i):wn(i)},Cn=async(i,t,e,r)=>{let n=new Set(e),a=t;for(;r===null||a<r;){let s=i.requestSliceRange(a,Ie,qe);if(s instanceof Promise&&(s=await s),!s)break;let o=je(s);if(!o)break;if(n.has(o.id))return{pos:a,found:!0};Tt(o.size),a=s.filePos+o.size}return{pos:r!==null&&r>a?r:a,found:!1}},cs=async(i,t,e,r)=>{let a=new Set(e),s=t;for(;s<r;){let o=i.requestSliceRange(s,0,Math.min(65536,r-s));if(o instanceof Promise&&(o=await o),!o||o.length<as)break;for(let c=0;c<o.length-as;c++){o.filePos=s;let u=Sn(o);if(u!==null&&a.has(u))return s;s++}}return null},Ce={avc:"V_MPEG4/ISO/AVC",hevc:"V_MPEGH/ISO/HEVC",vp8:"V_VP8",vp9:"V_VP9",av1:"V_AV1",aac:"A_AAC",mp3:"A_MPEG/L3",opus:"A_OPUS",vorbis:"A_VORBIS",flac:"A_FLAC",ac3:"A_AC3",eac3:"A_EAC3","pcm-u8":"A_PCM/INT/LIT","pcm-s16":"A_PCM/INT/LIT","pcm-s16be":"A_PCM/INT/BIG","pcm-s24":"A_PCM/INT/LIT","pcm-s24be":"A_PCM/INT/BIG","pcm-s32":"A_PCM/INT/LIT","pcm-s32be":"A_PCM/INT/BIG","pcm-f32":"A_PCM/FLOAT/IEEE","pcm-f64":"A_PCM/FLOAT/IEEE",webvtt:"S_TEXT/WEBVTT"};function Tt(i){if(i===void 0)throw new Error("Undefined element size is used in a place where it is not supported.")}var Pn=i=>{let e=(i.hasVideo?"video/":i.hasAudio?"audio/":"application/")+(i.isWebM?"webm":"x-matroska");if(i.codecStrings.length>0){let r=[...new Set(i.codecStrings.filter(Boolean))];e+=`; codecs="${r.join(", ")}"`}return e};var us=[{id:290298740,flag:"seekHeadSeen"},{id:357149030,flag:"infoSeen"},{id:374648427,flag:"tracksSeen"},{id:475249515,flag:"cuesSeen"}],fc=10*2**20,An=class extends fe{constructor(e){super(e);this.readMetadataPromise=null;this.segments=[];this.currentSegment=null;this.currentTrack=null;this.currentCluster=null;this.currentBlock=null;this.currentBlockAdditional=null;this.currentCueTime=null;this.currentDecodingInstruction=null;this.currentTagTargetIsMovie=!0;this.currentSimpleTagName=null;this.currentAttachedFile=null;this.isWebM=!1;this.reader=e._reader}async computeDuration(){let e=await this.getTracks(),r=await Promise.all(e.map(n=>n.computeDuration()));return Math.max(0,...r)}async getTracks(){return await this.readMetadata(),this.segments.flatMap(e=>e.tracks.map(r=>r.inputTrack))}async getMimeType(){await this.readMetadata();let e=await this.getTracks(),r=await Promise.all(e.map(n=>n.getCodecParameterString()));return Pn({isWebM:this.isWebM,hasVideo:this.segments.some(n=>n.tracks.some(a=>a.info?.type==="video")),hasAudio:this.segments.some(n=>n.tracks.some(a=>a.info?.type==="audio")),codecStrings:r.filter(Boolean)})}async getMetadataTags(){await this.readMetadata();for(let r of this.segments)r.metadataTagsCollected||(this.reader.fileSize!==null&&await this.loadSegmentMetadata(r),r.metadataTagsCollected=!0);let e={};for(let r of this.segments)e={...e,...r.metadataTags};return e}readMetadata(){return this.readMetadataPromise??=(async()=>{let e=0;for(;;){let r=this.reader.requestSliceRange(e,Ie,qe);if(r instanceof Promise&&(r=await r),!r)break;let n=je(r);if(!n)break;let a=n.id,s=n.size,o=r.filePos;if(a===440786851){Tt(s);let c=this.reader.requestSlice(o,s);if(c instanceof Promise&&(c=await c),!c)break;this.readContiguousElements(c)}else if(a===408125543){if(await this.readSegment(o,s),s===void 0||this.reader.fileSize===null)break}else if(a===524531317){if(this.reader.fileSize===null)break;s===void 0&&(s=(await Cn(this.reader,o,bi,this.reader.fileSize)).pos-o);let c=K(this.segments);c&&(c.elementEndPos=o+s)}Tt(s),e=o+s}})()}async readSegment(e,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:r===void 0?null:e+r,clusterSeekStartPos:e,lastReadCluster:null,metadataTags:{},metadataTagsCollected:!1},this.segments.push(this.currentSegment);let n=e;for(;this.currentSegment.elementEndPos===null||n<this.currentSegment.elementEndPos;){let c=this.reader.requestSliceRange(n,Ie,qe);if(c instanceof Promise&&(c=await c),!c)break;let u=n,d=je(c);if(!d||!Fr.includes(d.id)&&d.id!==236){let b=await cs(this.reader,u,Fr,Math.min(this.currentSegment.elementEndPos??1/0,u+fc));if(b){n=b;continue}else break}let{id:l,size:m}=d,f=c.filePos,g=us.findIndex(b=>b.id===l);if(g!==-1){let b=us[g].flag;this.currentSegment[b]=!0,Tt(m);let h=this.reader.requestSlice(f,m);h instanceof Promise&&(h=await h),h&&this.readContiguousElements(h)}else if(l===307544935||l===423732329){l===307544935?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,Tt(m);let b=this.reader.requestSlice(f,m);b instanceof Promise&&(b=await b),b&&this.readContiguousElements(b)}else if(l===524531317){this.currentSegment.clusterSeekStartPos=u;break}if(m===void 0)break;n=f+m}if(this.currentSegment.seekEntries.sort((c,u)=>c.segmentPosition-u.segmentPosition),this.reader.fileSize!==null)for(let c of this.currentSegment.seekEntries){let u=us.find(b=>b.id===c.id);if(!u||this.currentSegment[u.flag])continue;let d=this.reader.requestSliceRange(e+c.segmentPosition,Ie,qe);if(d instanceof Promise&&(d=await d),!d)continue;let l=je(d);if(!l)continue;let{id:m,size:f}=l;if(m!==u.id)continue;Tt(f),this.currentSegment[u.flag]=!0;let g=this.reader.requestSlice(d.filePos,f);g instanceof Promise&&(g=await g),g&&this.readContiguousElements(g)}this.currentSegment.timestampScale===-1&&(this.currentSegment.timestampScale=1e6,this.currentSegment.timestampFactor=1e9/1e6);for(let c of this.currentSegment.tracks)c.defaultDurationNs!==null&&(c.defaultDuration=this.currentSegment.timestampFactor*c.defaultDurationNs/1e9);this.currentSegment.tracks.sort((c,u)=>Number(u.disposition.default)-Number(c.disposition.default));let a=new Map(this.currentSegment.tracks.map(c=>[c.id,c]));for(let c of this.currentSegment.cuePoints){let u=a.get(c.trackId);u&&u.cuePoints.push(c)}for(let c of this.currentSegment.tracks){c.cuePoints.sort((u,d)=>u.time-d.time);for(let u=0;u<c.cuePoints.length-1;u++){let d=c.cuePoints[u],l=c.cuePoints[u+1];d.time===l.time&&(c.cuePoints.splice(u+1,1),u--)}}let s=null,o=-1/0;for(let c of this.currentSegment.tracks)c.cuePoints.length>o&&(o=c.cuePoints.length,s=c);for(let c of this.currentSegment.tracks)c.cuePoints.length===0&&(c.cuePoints=s.cuePoints);this.currentSegment=null}async readCluster(e,r){if(r.lastReadCluster?.elementStartPos===e)return r.lastReadCluster;let n=this.reader.requestSliceRange(e,Ie,qe);n instanceof Promise&&(n=await n),p(n);let a=e,s=je(n);p(s);let o=s.id;p(o===524531317);let c=s.size,u=n.filePos;c===void 0&&(c=(await Cn(this.reader,u,bi,r.elementEndPos)).pos-u);let d=this.reader.requestSlice(u,c);d instanceof Promise&&(d=await d);let l={segment:r,elementStartPos:a,elementEndPos:u+c,dataStartPos:u,timestamp:-1,trackData:new Map};if(this.currentCluster=l,d){let m=this.readContiguousElements(d,bi);l.elementEndPos=m}for(let[,m]of l.trackData){let f=m.track;p(m.blocks.length>0);let g=!1;for(let k=0;k<m.blocks.length;k++){let w=m.blocks[k];w.timestamp+=l.timestamp,g||=w.lacing!==0}m.presentationTimestamps=m.blocks.map((k,w)=>({timestamp:k.timestamp,blockIndex:w})).sort((k,w)=>k.timestamp-w.timestamp);for(let k=0;k<m.presentationTimestamps.length;k++){let w=m.presentationTimestamps[k],S=m.blocks[w.blockIndex];if(m.firstKeyFrameTimestamp===null&&S.isKeyFrame&&(m.firstKeyFrameTimestamp=S.timestamp),k<m.presentationTimestamps.length-1){let T=m.presentationTimestamps[k+1];S.duration=T.timestamp-S.timestamp}else S.duration===0&&f.defaultDuration!=null&&S.lacing===0&&(S.duration=f.defaultDuration)}g&&(this.expandLacedBlocks(m.blocks,f),m.presentationTimestamps=m.blocks.map((k,w)=>({timestamp:k.timestamp,blockIndex:w})).sort((k,w)=>k.timestamp-w.timestamp));let b=m.blocks[m.presentationTimestamps[0].blockIndex],h=m.blocks[K(m.presentationTimestamps).blockIndex];m.startTimestamp=b.timestamp,m.endTimestamp=h.timestamp+h.duration;let y=N(f.clusterPositionCache,m.startTimestamp,k=>k.startTimestamp);(y===-1||f.clusterPositionCache[y].elementStartPos!==a)&&f.clusterPositionCache.splice(y+1,0,{elementStartPos:l.elementStartPos,startTimestamp:m.startTimestamp})}return r.lastReadCluster=l,l}getTrackDataInCluster(e,r){let n=e.trackData.get(r);if(!n){let a=e.segment.tracks.find(s=>s.id===r);if(!a)return null;n={track:a,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(r,n)}return n}expandLacedBlocks(e,r){for(let n=0;n<e.length;n++){let a=e[n];if(a.lacing===0)continue;a.decoded||(a.data=this.decodeBlockData(r,a.data),a.decoded=!0);let s=he.tempFromBytes(a.data),o=[],c=R(s)+1;switch(a.lacing){case 1:{let d=0;for(let l=0;l<c-1;l++){let m=0;for(;s.bufferPos<s.length;){let f=R(s);if(m+=f,f<255){o.push(m),d+=m;break}}}o.push(s.length-(s.bufferPos+d))}break;case 2:{let d=s.length-1,l=Math.floor(d/c);for(let m=0;m<c;m++)o.push(l)}break;case 3:{let d=Mr(s);p(d!==null);let l=d;o.push(l);let m=l;for(let f=1;f<c-1;f++){let g=s.bufferPos,b=Mr(s);p(b!==null);let h=b,k=(1<<(s.bufferPos-g)*7-1)-1,w=h-k;l+=w,o.push(l),m+=l}o.push(s.length-(s.bufferPos+m))}break;default:p(!1)}p(o.length===c),e.splice(n,1);let u=a.duration||c*(r.defaultDuration??0);for(let d=0;d<c;d++){let l=o[d],m=M(s,l),f=a.timestamp+u*d/c,g=u/c;e.splice(n+d,0,{timestamp:f,duration:g,isKeyFrame:a.isKeyFrame,data:m,lacing:0,decoded:!0,mainAdditional:a.mainAdditional})}n+=c,n--}}async loadSegmentMetadata(e){for(let r of e.seekEntries){if(!(r.id===307544935&&!e.tagsSeen)){if(!(r.id===423732329&&!e.attachmentsSeen))continue}let n=this.reader.requestSliceRange(e.dataStartPos+r.segmentPosition,Ie,qe);if(n instanceof Promise&&(n=await n),!n)continue;let a=je(n);if(!a||a.id!==r.id)continue;let{size:s}=a;Tt(s),p(!this.currentSegment),this.currentSegment=e;let o=this.reader.requestSlice(n.filePos,s);o instanceof Promise&&(o=await o),o&&this.readContiguousElements(o),this.currentSegment=null,r.id===307544935?e.tagsSeen=!0:r.id===423732329&&(e.attachmentsSeen=!0)}}readContiguousElements(e,r){for(;e.remainingLength>=Ie;){let n=e.filePos;if(!this.traverseElement(e,r))return n}return e.filePos}traverseElement(e,r){let n=je(e);if(!n||r&&r.includes(n.id))return!1;let{id:a,size:s}=n,o=e.filePos;switch(Tt(s),a){case 17026:this.isWebM=Lt(e,s)==="webm";break;case 19899:{if(!this.currentSegment)break;let c={id:-1,segmentPosition:-1};this.currentSegment.seekEntries.push(c),this.readContiguousElements(e.slice(o,s)),(c.id===-1||c.segmentPosition===-1)&&this.currentSegment.seekEntries.pop()}break;case 21419:{let c=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!c)break;c.id=L(e,s)}break;case 21420:{let c=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!c)break;c.segmentPosition=L(e,s)}break;case 2807729:{if(!this.currentSegment)break;this.currentSegment.timestampScale=L(e,s),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale}break;case 17545:{if(!this.currentSegment)break;this.currentSegment.duration=xn(e,s)}break;case 174:{if(!this.currentSegment||(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:{...we},inputTrack:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:ee,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(o,s)),!this.currentTrack))break;if(this.currentTrack.decodingInstructions.some(c=>c.data?.type!=="decompress"||c.scope!==1||c.data.algorithm!==3)&&(console.warn(`Track #${this.currentTrack.id} has an unsupported content encoding; dropping.`),this.currentTrack=null),this.currentTrack&&this.currentTrack.id!==-1&&this.currentTrack.codecId&&this.currentTrack.info){let c=this.currentTrack.codecId.indexOf("/"),u=c===-1?this.currentTrack.codecId:this.currentTrack.codecId.slice(0,c);if(this.currentTrack.info.type==="video"&&this.currentTrack.info.width!==-1&&this.currentTrack.info.height!==-1){this.currentTrack.codecId===Ce.avc?(this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Ce.hevc?(this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):u===Ce.vp8?this.currentTrack.info.codec="vp8":u===Ce.vp9?this.currentTrack.info.codec="vp9":u===Ce.av1&&(this.currentTrack.info.codec="av1");let d=this.currentTrack,l=new Fe(this.input,new ds(d));this.currentTrack.inputTrack=l,this.currentSegment.tracks.push(this.currentTrack)}else if(this.currentTrack.info.type==="audio"&&this.currentTrack.info.numberOfChannels!==-1&&this.currentTrack.info.sampleRate!==-1){u===Ce.aac?(this.currentTrack.info.codec="aac",this.currentTrack.info.aacCodecInfo={isMpeg2:this.currentTrack.codecId.includes("MPEG2"),objectType:null},this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Ce.mp3?this.currentTrack.info.codec="mp3":u===Ce.opus?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=Ne):u===Ce.vorbis?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):u===Ce.flac?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):u===Ce.ac3?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):u===Ce.eac3?(this.currentTrack.info.codec="eac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId==="A_PCM/INT/LIT"?this.currentTrack.info.bitDepth===8?this.currentTrack.info.codec="pcm-u8":this.currentTrack.info.bitDepth===16?this.currentTrack.info.codec="pcm-s16":this.currentTrack.info.bitDepth===24?this.currentTrack.info.codec="pcm-s24":this.currentTrack.info.bitDepth===32&&(this.currentTrack.info.codec="pcm-s32"):this.currentTrack.codecId==="A_PCM/INT/BIG"?this.currentTrack.info.bitDepth===8?this.currentTrack.info.codec="pcm-u8":this.currentTrack.info.bitDepth===16?this.currentTrack.info.codec="pcm-s16be":this.currentTrack.info.bitDepth===24?this.currentTrack.info.codec="pcm-s24be":this.currentTrack.info.bitDepth===32&&(this.currentTrack.info.codec="pcm-s32be"):this.currentTrack.codecId==="A_PCM/FLOAT/IEEE"&&(this.currentTrack.info.bitDepth===32?this.currentTrack.info.codec="pcm-f32":this.currentTrack.info.bitDepth===64&&(this.currentTrack.info.codec="pcm-f64"));let d=this.currentTrack,l=new te(this.input,new ls(d));this.currentTrack.inputTrack=l,this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null}break;case 215:{if(!this.currentTrack)break;this.currentTrack.id=L(e,s)}break;case 131:{if(!this.currentTrack)break;let c=L(e,s);c===1?this.currentTrack.info={type:"video",width:-1,height:-1,rotation:0,codec:null,codecDescription:null,colorSpace:null,alphaMode:!1}:c===2&&(this.currentTrack.info={type:"audio",numberOfChannels:-1,sampleRate:-1,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null})}break;case 185:{if(!this.currentTrack)break;L(e,s)||(this.currentTrack=null)}break;case 136:{if(!this.currentTrack)break;this.currentTrack.disposition.default=!!L(e,s)}break;case 21930:{if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!L(e,s)}break;case 21934:{if(!this.currentTrack)break;this.currentTrack.disposition.original=!!L(e,s)}break;case 21931:{if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!L(e,s)}break;case 21932:{if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!L(e,s)}break;case 21935:{if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!L(e,s)}break;case 134:{if(!this.currentTrack)break;this.currentTrack.codecId=Lt(e,s)}break;case 25506:{if(!this.currentTrack)break;this.currentTrack.codecPrivate=M(e,s)}break;case 2352003:{if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=L(e,s)}break;case 21358:{if(!this.currentTrack)break;this.currentTrack.name=Rr(e,s)}break;case 2274716:{if(!this.currentTrack||this.currentTrack.languageCode!==ee)break;this.currentTrack.languageCode=Lt(e,s),lt(this.currentTrack.languageCode)||(this.currentTrack.languageCode=ee)}break;case 2274717:{if(!this.currentTrack)break;let u=Lt(e,s).split("-")[0];u?this.currentTrack.languageCode=u:this.currentTrack.languageCode=ee}break;case 224:{if(this.currentTrack?.info?.type!=="video")break;this.readContiguousElements(e.slice(o,s))}break;case 176:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.width=L(e,s)}break;case 186:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.height=L(e,s)}break;case 21440:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.alphaMode=L(e,s)===1}break;case 21936:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.colorSpace={},this.readContiguousElements(e.slice(o,s))}break;case 21937:{if(this.currentTrack?.info?.type!=="video"||!this.currentTrack.info.colorSpace)break;let c=L(e,s),u=$t[c]??null;this.currentTrack.info.colorSpace.matrix=u}break;case 21945:{if(this.currentTrack?.info?.type!=="video"||!this.currentTrack.info.colorSpace)break;this.currentTrack.info.colorSpace.fullRange=L(e,s)===2}break;case 21946:{if(this.currentTrack?.info?.type!=="video"||!this.currentTrack.info.colorSpace)break;let c=L(e,s),u=Qt[c]??null;this.currentTrack.info.colorSpace.transfer=u}break;case 21947:{if(this.currentTrack?.info?.type!=="video"||!this.currentTrack.info.colorSpace)break;let c=L(e,s),u=Gt[c]??null;this.currentTrack.info.colorSpace.primaries=u}break;case 30320:{if(this.currentTrack?.info?.type!=="video")break;this.readContiguousElements(e.slice(o,s))}break;case 30325:{if(this.currentTrack?.info?.type!=="video")break;let u=-xn(e,s);try{this.currentTrack.info.rotation=_t(u)}catch{}}break;case 225:{if(this.currentTrack?.info?.type!=="audio")break;this.readContiguousElements(e.slice(o,s))}break;case 181:{if(this.currentTrack?.info?.type!=="audio")break;this.currentTrack.info.sampleRate=xn(e,s)}break;case 159:{if(this.currentTrack?.info?.type!=="audio")break;this.currentTrack.info.numberOfChannels=L(e,s)}break;case 25188:{if(this.currentTrack?.info?.type!=="audio")break;this.currentTrack.info.bitDepth=L(e,s)}break;case 187:{if(!this.currentSegment)break;this.readContiguousElements(e.slice(o,s)),this.currentCueTime=null}break;case 179:this.currentCueTime=L(e,s);break;case 183:{if(this.currentCueTime===null)break;p(this.currentSegment);let c={time:this.currentCueTime,trackId:-1,clusterPosition:-1};this.currentSegment.cuePoints.push(c),this.readContiguousElements(e.slice(o,s)),(c.trackId===-1||c.clusterPosition===-1)&&this.currentSegment.cuePoints.pop()}break;case 247:{let c=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!c)break;c.trackId=L(e,s)}break;case 241:{let c=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!c)break;p(this.currentSegment),c.clusterPosition=this.currentSegment.dataStartPos+L(e,s)}break;case 231:{if(!this.currentCluster)break;this.currentCluster.timestamp=L(e,s)}break;case 163:{if(!this.currentCluster)break;let c=Mr(e);if(c===null)break;let u=this.getTrackDataInCluster(this.currentCluster,c);if(!u)break;let d=hi(e),l=R(e),m=l>>1&3,f=!!(l&128);u.track.info?.type==="audio"&&u.track.info.codec&&(f=!0);let g=M(e,s-(e.filePos-o)),b=u.track.decodingInstructions.length>0;u.blocks.push({timestamp:d,duration:0,isKeyFrame:f,data:g,lacing:m,decoded:!b,mainAdditional:null})}break;case 160:{if(!this.currentCluster)break;this.readContiguousElements(e.slice(o,s)),this.currentBlock=null}break;case 161:{if(!this.currentCluster)break;let c=Mr(e);if(c===null)break;let u=this.getTrackDataInCluster(this.currentCluster,c);if(!u)break;let d=hi(e),m=R(e)>>1&3,f=M(e,s-(e.filePos-o)),g=u.track.decodingInstructions.length>0;this.currentBlock={timestamp:d,duration:0,isKeyFrame:!0,data:f,lacing:m,decoded:!g,mainAdditional:null},u.blocks.push(this.currentBlock)}break;case 30113:this.readContiguousElements(e.slice(o,s));break;case 166:{if(!this.currentBlock)break;this.currentBlockAdditional={addId:1,data:null},this.readContiguousElements(e.slice(o,s)),this.currentBlockAdditional.data&&this.currentBlockAdditional.addId===1&&(this.currentBlock.mainAdditional=this.currentBlockAdditional.data),this.currentBlockAdditional=null}break;case 165:{if(!this.currentBlockAdditional)break;this.currentBlockAdditional.data=M(e,s)}break;case 238:{if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=L(e,s)}break;case 155:{if(!this.currentBlock)break;this.currentBlock.duration=L(e,s)}break;case 251:{if(!this.currentBlock)break;this.currentBlock.isKeyFrame=!1}break;case 29555:this.currentTagTargetIsMovie=!0,this.readContiguousElements(e.slice(o,s));break;case 25536:this.readContiguousElements(e.slice(o,s));break;case 26826:L(e,s)!==50&&(this.currentTagTargetIsMovie=!1);break;case 25541:case 25545:case 25540:case 25542:this.currentTagTargetIsMovie=!1;break;case 26568:{if(!this.currentTagTargetIsMovie)break;this.currentSimpleTagName=null,this.readContiguousElements(e.slice(o,s))}break;case 17827:this.currentSimpleTagName=Rr(e,s);break;case 17543:{if(!this.currentSimpleTagName)break;let c=Rr(e,s);this.processTagValue(this.currentSimpleTagName,c)}break;case 17541:{if(!this.currentSimpleTagName)break;let c=M(e,s);this.processTagValue(this.currentSimpleTagName,c)}break;case 24999:{if(!this.currentSegment)break;this.currentAttachedFile={fileUid:null,fileName:null,fileMediaType:null,fileData:null,fileDescription:null},this.readContiguousElements(e.slice(o,s));let c=this.currentSegment.metadataTags;if(this.currentAttachedFile.fileUid&&this.currentAttachedFile.fileData&&(c.raw??={},c.raw[this.currentAttachedFile.fileUid.toString()]=new Bt(this.currentAttachedFile.fileData,this.currentAttachedFile.fileMediaType??void 0,this.currentAttachedFile.fileName??void 0,this.currentAttachedFile.fileDescription??void 0)),this.currentAttachedFile.fileMediaType?.startsWith("image/")&&this.currentAttachedFile.fileData){let u=this.currentAttachedFile.fileName,d="unknown";if(u){let l=u.toLowerCase();l.startsWith("cover.")?d="coverFront":l.startsWith("back.")&&(d="coverBack")}c.images??=[],c.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:d,name:this.currentAttachedFile.fileName??void 0,description:this.currentAttachedFile.fileDescription??void 0})}this.currentAttachedFile=null}break;case 18094:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileUid=dc(e,s)}break;case 18030:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileName=Rr(e,s)}break;case 18016:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileMediaType=Lt(e,s)}break;case 18012:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileData=M(e,s)}break;case 18046:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileDescription=Rr(e,s)}break;case 28032:{if(!this.currentTrack)break;this.readContiguousElements(e.slice(o,s)),this.currentTrack.decodingInstructions.sort((c,u)=>u.order-c.order)}break;case 25152:this.currentDecodingInstruction={order:0,scope:1,data:null},this.readContiguousElements(e.slice(o,s)),this.currentDecodingInstruction.data&&this.currentTrack.decodingInstructions.push(this.currentDecodingInstruction),this.currentDecodingInstruction=null;break;case 20529:{if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.order=L(e,s)}break;case 20530:{if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=L(e,s)}break;case 20532:{if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decompress",algorithm:0,settings:null},this.readContiguousElements(e.slice(o,s))}break;case 16980:{if(this.currentDecodingInstruction?.data?.type!=="decompress")break;this.currentDecodingInstruction.data.algorithm=L(e,s)}break;case 16981:{if(this.currentDecodingInstruction?.data?.type!=="decompress")break;this.currentDecodingInstruction.data.settings=M(e,s)}break;case 20533:{if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}break}return e.filePos=o+s,!0}decodeBlockData(e,r){p(e.decodingInstructions.length>0);let n=r;for(let a of e.decodingInstructions)switch(p(a.data),a.data.type){case"decompress":switch(a.data.algorithm){case 3:if(a.data.settings&&a.data.settings.length>0){let s=a.data.settings,o=new Uint8Array(s.length+n.length);o.set(s,0),o.set(n,s.length),n=o}break;default:}break;default:}return n}processTagValue(e,r){if(!this.currentSegment?.metadataTags)return;let n=this.currentSegment.metadataTags;if(n.raw??={},n.raw[e]??=r,typeof r=="string")switch(e.toLowerCase()){case"title":n.title??=r;break;case"description":n.description??=r;break;case"artist":n.artist??=r;break;case"album":n.album??=r;break;case"album_artist":n.albumArtist??=r;break;case"genre":n.genre??=r;break;case"comment":n.comment??=r;break;case"lyrics":n.lyrics??=r;break;case"date":{let a=new Date(r);Number.isNaN(a.getTime())||(n.date??=a)}break;case"track_number":case"part_number":{let a=r.split("/"),s=Number.parseInt(a[0],10),o=a[1]&&Number.parseInt(a[1],10);Number.isInteger(s)&&s>0&&(n.trackNumber??=s),o&&Number.isInteger(o)&&o>0&&(n.tracksTotal??=o)}break;case"disc_number":case"disc":{let a=r.split("/"),s=Number.parseInt(a[0],10),o=a[1]&&Number.parseInt(a[1],10);Number.isInteger(s)&&s>0&&(n.discNumber??=s),o&&Number.isInteger(o)&&o>0&&(n.discsTotal??=o)}break}}},In=class{constructor(t){this.internalTrack=t;this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){let t=this.internalTrack.demuxer,r=this.internalTrack.inputTrack.type,n=0;for(let a of t.segments)for(let s of a.tracks)if(s.inputTrack.type===r&&n++,s===this.internalTrack)break;return n}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}async computeDuration(){let t=await this.getPacket(1/0,{metadataOnly:!0});return(t?.timestamp??0)+(t?.duration??0)}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}async getFirstTimestamp(){return(await this.getFirstPacket({metadataOnly:!0}))?.timestamp??0}getTimeResolution(){return this.internalTrack.segment.timestampFactor}getDisposition(){return this.internalTrack.disposition}async getFirstPacket(t){return this.performClusterLookup(null,e=>e.trackData.get(this.internalTrack.id)?{blockIndex:0,correctBlockFound:!0}:{blockIndex:-1,correctBlockFound:!1},-1/0,1/0,t)}intoTimescale(t){return dt(t*this.internalTrack.segment.timestampFactor)}async getPacket(t,e){let r=this.intoTimescale(t);return this.performClusterLookup(null,n=>{let a=n.trackData.get(this.internalTrack.id);if(!a)return{blockIndex:-1,correctBlockFound:!1};let s=N(a.presentationTimestamps,r,u=>u.timestamp),o=s!==-1?a.presentationTimestamps[s].blockIndex:-1,c=s!==-1&&r<a.endTimestamp;return{blockIndex:o,correctBlockFound:c}},r,r,e)}async getNextPacket(t,e){let r=this.packetToClusterLocation.get(t);if(r===void 0)throw new Error("Packet was not created from this track.");return this.performClusterLookup(r.cluster,n=>{if(n===r.cluster){let a=n.trackData.get(this.internalTrack.id);if(r.blockIndex+1<a.blocks.length)return{blockIndex:r.blockIndex+1,correctBlockFound:!0}}else if(n.trackData.get(this.internalTrack.id))return{blockIndex:0,correctBlockFound:!0};return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,e)}async getKeyPacket(t,e){let r=this.intoTimescale(t);return this.performClusterLookup(null,n=>{let a=n.trackData.get(this.internalTrack.id);if(!a)return{blockIndex:-1,correctBlockFound:!1};let s=gr(a.presentationTimestamps,u=>a.blocks[u.blockIndex].isKeyFrame&&u.timestamp<=r),o=s!==-1?a.presentationTimestamps[s].blockIndex:-1,c=s!==-1&&r<a.endTimestamp;return{blockIndex:o,correctBlockFound:c}},r,r,e)}async getNextKeyPacket(t,e){let r=this.packetToClusterLocation.get(t);if(r===void 0)throw new Error("Packet was not created from this track.");return this.performClusterLookup(r.cluster,n=>{if(n===r.cluster){let s=n.trackData.get(this.internalTrack.id).blocks.findIndex((o,c)=>o.isKeyFrame&&c>r.blockIndex);if(s!==-1)return{blockIndex:s,correctBlockFound:!0}}else{let a=n.trackData.get(this.internalTrack.id);if(a&&a.firstKeyFrameTimestamp!==null){let s=a.blocks.findIndex(o=>o.isKeyFrame);return p(s!==-1),{blockIndex:s,correctBlockFound:!0}}}return{blockIndex:-1,correctBlockFound:!1}},-1/0,1/0,e)}async fetchPacketInCluster(t,e,r){if(e===-1)return null;let a=t.trackData.get(this.internalTrack.id).blocks[e];p(a),a.decoded||(a.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,a.data),a.decoded=!0);let s=r.metadataOnly?se:a.data,o=a.timestamp/this.internalTrack.segment.timestampFactor,c=a.duration/this.internalTrack.segment.timestampFactor,u={};a.mainAdditional&&this.internalTrack.info?.type==="video"&&this.internalTrack.info.alphaMode&&(u.alpha=r.metadataOnly?se:a.mainAdditional,u.alphaByteLength=a.mainAdditional.byteLength);let d=new W(s,a.isKeyFrame?"key":"delta",o,c,t.dataStartPos+e,a.data.byteLength,u);return this.packetToClusterLocation.set(d,{cluster:t,blockIndex:e}),d}async performClusterLookup(t,e,r,n,a){let{demuxer:s,segment:o}=this.internalTrack,c=null,u=null,d=-1;if(t){let{blockIndex:y,correctBlockFound:k}=e(t);if(k)return this.fetchPacketInCluster(t,y,a);y!==-1&&(u=t,d=y)}let l=N(this.internalTrack.cuePoints,r,y=>y.time),m=l!==-1?this.internalTrack.cuePoints[l]:null,f=N(this.internalTrack.clusterPositionCache,r,y=>y.startTimestamp),g=f!==-1?this.internalTrack.clusterPositionCache[f]:null,b=Math.max(m?.clusterPosition??0,g?.elementStartPos??0)||null,h;for(t?b===null||t.elementStartPos>=b?(h=t.elementEndPos,c=t):h=b:h=b??o.clusterSeekStartPos;o.elementEndPos===null||h<=o.elementEndPos-Ie;){if(c){let C=c.trackData.get(this.internalTrack.id);if(C&&C.startTimestamp>n)break}let y=s.reader.requestSliceRange(h,Ie,qe);if(y instanceof Promise&&(y=await y),!y)break;let k=h,w=je(y);if(!w||!Fr.includes(w.id)&&w.id!==236){let C=await cs(s.reader,k,Fr,Math.min(o.elementEndPos??1/0,k+fc));if(C){h=C;continue}else break}let S=w.id,T=w.size,x=y.filePos;if(S===524531317){c=await s.readCluster(k,o),T=c.elementEndPos-x;let{blockIndex:C,correctBlockFound:_}=e(c);if(_)return this.fetchPacketInCluster(c,C,a);C!==-1&&(u=c,d=C)}T===void 0&&(p(S!==524531317),T=(await Cn(s.reader,x,bi,o.elementEndPos)).pos-x);let P=x+T;if(o.elementEndPos===null){let C=s.reader.requestSliceRange(P,Ie,qe);if(C instanceof Promise&&(C=await C),!C)break;if(Sn(C)===408125543){o.elementEndPos=P;break}}h=P}if(m&&(!u||u.elementStartPos<m.clusterPosition)){let y=this.internalTrack.cuePoints[l-1];p(!y||y.time<m.time);let k=y?.time??-1/0;return this.performClusterLookup(null,e,k,n,a)}return u?this.fetchPacketInCluster(u,d,a):null}},ds=class extends In{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}async getColorSpace(){return{primaries:this.internalTrack.info.colorSpace?.primaries,transfer:this.internalTrack.info.colorSpace?.transfer,matrix:this.internalTrack.info.colorSpace?.matrix,fullRange:this.internalTrack.info.colorSpace?.fullRange}}async canBeTransparent(){return this.internalTrack.info.alphaMode}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfigPromise??=(async()=>{let e=null;return(this.internalTrack.info.codec==="vp9"||this.internalTrack.info.codec==="av1"||this.internalTrack.info.codec==="avc"&&!this.internalTrack.info.codecDescription||this.internalTrack.info.codec==="hevc"&&!this.internalTrack.info.codecDescription)&&(e=await this.getFirstPacket({})),{codec:br({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:this.internalTrack.info.codec==="avc"&&e?Sr(e.data):null,hevcCodecInfo:this.internalTrack.info.codec==="hevc"&&e?xr(e.data):null,vp9CodecInfo:this.internalTrack.info.codec==="vp9"&&e?rn(e.data):null,av1CodecInfo:this.internalTrack.info.codec==="av1"&&e?nn(e.data):null}),codedWidth:this.internalTrack.info.width,codedHeight:this.internalTrack.info.height,description:this.internalTrack.info.codecDescription??void 0,colorSpace:this.internalTrack.info.colorSpace??void 0}})():null}},ls=class extends In{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}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfig??={codec:kr({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:this.internalTrack.info.codecDescription??void 0}:null}};var ki=async(i,t,e)=>{let r=t;for(;e===null||r<e;){let n=i.requestSlice(r,4);if(n instanceof Promise&&(n=await n),!n)break;let a=A(n),s=Jt(a,i.fileSize!==null?i.fileSize-r:null);if(s.header)return{header:s.header,startPos:r};r+=s.bytesAdvanced}return null};var vn=class extends fe{constructor(e){super(e);this.metadataPromise=null;this.firstFrameHeader=null;this.loadedSamples=[];this.metadataTags=null;this.tracks=[];this.readingMutex=new Pe;this.lastSampleLoaded=!1;this.lastLoadedPos=0;this.nextTimestampInSamples=0;this.reader=e._reader}async readMetadata(){return this.metadataPromise??=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();if(!this.firstFrameHeader)throw new Error("No valid MP3 frame found.");this.tracks=[new te(this.input,new ms(this))]})()}async advanceReader(){if(this.lastLoadedPos===0)for(;;){let c=this.reader.requestSlice(this.lastLoadedPos,rt);if(c instanceof Promise&&(c=await c),!c){this.lastSampleLoaded=!0;return}let u=Ke(c);if(!u)break;this.lastLoadedPos=c.filePos+u.size}let e=await ki(this.reader,this.lastLoadedPos,this.reader.fileSize);if(!e){this.lastSampleLoaded=!0;return}let r=e.header;this.lastLoadedPos=e.startPos+r.totalSize-1;let n=Ot(r.mpegVersionId,r.channel),a=this.reader.requestSlice(e.startPos+n,4);if(a instanceof Promise&&(a=await a),a){let c=A(a);if(c===Dt||c===Tr)return}this.firstFrameHeader||(this.firstFrameHeader=r),r.sampleRate!==this.firstFrameHeader.sampleRate&&console.warn(`MP3 changed sample rate mid-file: ${this.firstFrameHeader.sampleRate} Hz to ${r.sampleRate} Hz. Might be a bug, so please report this file.`);let s=r.audioSamplesInFrame/this.firstFrameHeader.sampleRate,o={timestamp:this.nextTimestampInSamples/this.firstFrameHeader.sampleRate,duration:s,dataStart:e.startPos,dataSize:r.totalSize};this.loadedSamples.push(o),this.nextTimestampInSamples+=r.audioSamplesInFrame}async getMimeType(){return"audio/mpeg"}async getTracks(){return await this.readMetadata(),this.tracks}async computeDuration(){await this.readMetadata();let e=this.tracks[0];return p(e),e.computeDuration()}async getMetadataTags(){let e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let r=0,n=!1;for(;;){let a=this.reader.requestSlice(r,rt);if(a instanceof Promise&&(a=await a),!a)break;let s=Ke(a);if(!s)break;n=!0;let o=this.reader.requestSlice(a.filePos,s.size);if(o instanceof Promise&&(o=await o),!o)break;Br(o,s,this.metadataTags),r=a.filePos+s.size}if(!n&&this.reader.fileSize!==null&&this.reader.fileSize>=yi){let a=this.reader.requestSlice(this.reader.fileSize-yi,yi);a instanceof Promise&&(a=await a),p(a),re(a,3)==="TAG"&&pc(a,this.metadataTags)}return this.metadataTags}finally{e()}}},ms=class{constructor(t){this.demuxer=t}getId(){return 1}getNumber(){return 1}async getFirstTimestamp(){return 0}getTimeResolution(){return p(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}async computeDuration(){let t=await this.getPacket(1/0,{metadataOnly:!0});return(t?.timestamp??0)+(t?.duration??0)}getName(){return null}getLanguageCode(){return ee}getCodec(){return"mp3"}getInternalCodecId(){return null}getNumberOfChannels(){return p(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.channel===3?1:2}getSampleRate(){return p(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate}getDisposition(){return{...we}}async getDecoderConfig(){return p(this.demuxer.firstFrameHeader),{codec:"mp3",numberOfChannels:this.demuxer.firstFrameHeader.channel===3?1:2,sampleRate:this.demuxer.firstFrameHeader.sampleRate}}async getPacketAtIndex(t,e){if(t===-1)return null;let r=this.demuxer.loadedSamples[t];if(!r)return null;let n;if(e.metadataOnly)n=se;else{let a=this.demuxer.reader.requestSlice(r.dataStart,r.dataSize);if(a instanceof Promise&&(a=await a),!a)return null;n=M(a,r.dataSize)}return new W(n,"key",r.timestamp,r.duration,t,r.dataSize)}getFirstPacket(t){return this.getPacketAtIndex(0,t)}async getNextPacket(t,e){let r=await this.demuxer.readingMutex.acquire();try{let n=ut(this.demuxer.loadedSamples,t.timestamp,s=>s.timestamp);if(n===-1)throw new Error("Packet was not created from this track.");let a=n+1;for(;a>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(a,e)}finally{r()}}async getPacket(t,e){let r=await this.demuxer.readingMutex.acquire();try{for(;;){let n=N(this.demuxer.loadedSamples,t,a=>a.timestamp);if(n===-1&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(n,e);if(n>=0&&n+1<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(n,e);await this.demuxer.advanceReader()}}finally{r()}}getKeyPacket(t,e){return this.getPacket(t,e)}getNextKeyPacket(t,e){return this.getNextPacket(t,e)}};var wi=1399285583,td=79764919,hc=new Uint32Array(256);for(let i=0;i<256;i++){let t=i<<24;for(let e=0;e<8;e++)t=t&2147483648?t<<1^td:t<<1;hc[i]=t>>>0&4294967295}var En=i=>{let t=D(i),e=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let n=0;n<i.length;n++){let a=i[n];r=(r<<8^hc[r>>>24^a])>>>0}return t.setUint32(22,e,!0),r},_n=(i,t,e)=>{let r=0,n=null;if(i.length>0)if(t.codec==="vorbis"){p(t.vorbisInfo);let a=t.vorbisInfo.modeBlockflags.length,o=(1<<go(a-1))-1<<1,c=(i[0]&o)>>1;if(c>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let u=e,d=t.vorbisInfo.modeBlockflags[c];if(n=t.vorbisInfo.blocksizes[d],d===1){let l=(o|1)+1,m=i[0]&l?1:0;u=t.vorbisInfo.blocksizes[m]}r=u!==null?u+n>>2:0}else t.codec==="opus"&&(r=Wo(i).durationInSamples);return{durationInSamples:r,vorbisBlockSize:n}},Fn=i=>{let t="audio/ogg";if(i.codecStrings){let e=[...new Set(i.codecStrings)];t+=`; codecs="${e.join(", ")}"`}return t};var Wt=27,dr=282,Mn=dr+255*255,Dr=i=>{let t=i.filePos;if(ur(i)!==wi)return null;i.skip(1);let r=R(i),n=bc(i),a=ur(i),s=ur(i),o=ur(i),c=R(i),u=new Uint8Array(c);for(let f=0;f<c;f++)u[f]=R(i);let d=27+c,l=u.reduce((f,g)=>f+g,0),m=d+l;return{headerStartPos:t,totalSize:m,dataStartPos:t+d,dataSize:l,headerType:r,granulePosition:n,serialNumber:a,sequenceNumber:s,checksum:o,lacingValues:u}},gc=(i,t)=>{for(;i.filePos<t-3;){let e=ur(i),r=e&255,n=e>>>8&255,a=e>>>16&255,s=e>>>24&255,o=79;if(!(r!==o&&n!==o&&a!==o&&s!==o)){if(i.skip(-4),e===wi)return!0;i.skip(1)}}return!1};var Rn=class extends fe{constructor(e){super(e);this.metadataPromise=null;this.bitstreams=[];this.tracks=[];this.metadataTags={};this.reader=e._reader}async readMetadata(){return this.metadataPromise??=(async()=>{let e=0;for(;;){let r=this.reader.requestSliceRange(e,Wt,dr);if(r instanceof Promise&&(r=await r),!r)break;let n=Dr(r);if(!n||!!!(n.headerType&2))break;this.bitstreams.push({serialNumber:n.serialNumber,bosPage:n,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=n.headerStartPos+n.totalSize}for(let r of this.bitstreams){let n=await this.readPacket(r.bosPage,0);n&&(n.data.byteLength>=7&&n.data[0]===1&&n.data[1]===118&&n.data[2]===111&&n.data[3]===114&&n.data[4]===98&&n.data[5]===105&&n.data[6]===115?await this.readVorbisMetadata(n,r):n.data.byteLength>=8&&n.data[0]===79&&n.data[1]===112&&n.data[2]===117&&n.data[3]===115&&n.data[4]===72&&n.data[5]===101&&n.data[6]===97&&n.data[7]===100&&await this.readOpusMetadata(n,r),r.codecInfo.codec!==null&&this.tracks.push(new te(this.input,new fs(r,this))))}})()}async readVorbisMetadata(e,r){let n=await this.findNextPacketStart(e);if(!n)return;let a=await this.readPacket(n.startPage,n.startSegmentIndex);if(!a||(n=await this.findNextPacketStart(a),!n))return;let s=await this.readPacket(n.startPage,n.startSegmentIndex);if(!s||a.data[0]!==3||s.data[0]!==5)return;let o=[],c=m=>{for(;o.push(Math.min(255,m)),!(m<255);)m-=255};c(e.data.length),c(a.data.length);let u=new Uint8Array(1+o.length+e.data.length+a.data.length+s.data.length);u[0]=2,u.set(o,1),u.set(e.data,1+o.length),u.set(a.data,1+o.length+e.data.length),u.set(s.data,1+o.length+e.data.length+a.data.length),r.codecInfo.codec="vorbis",r.description=u,r.lastMetadataPacket=s;let d=D(e.data);r.numberOfChannels=d.getUint8(11),r.sampleRate=d.getUint32(12,!0);let l=d.getUint8(28);r.codecInfo.vorbisInfo={blocksizes:[1<<(l&15),1<<(l>>4)],modeBlockflags:an(s.data).modeBlockflags},ii(a.data.subarray(7),this.metadataTags)}async readOpusMetadata(e,r){let n=await this.findNextPacketStart(e);if(!n)return;let a=await this.readPacket(n.startPage,n.startSegmentIndex);if(!a)return;r.codecInfo.codec="opus",r.description=e.data,r.lastMetadataPacket=a;let s=Vt(e.data);r.numberOfChannels=s.outputChannelCount,r.sampleRate=Ne,r.codecInfo.opusInfo={preSkip:s.preSkip},ii(a.data.subarray(8),this.metadataTags)}async readPacket(e,r){p(r<e.lacingValues.length);let n=0;for(let m=0;m<r;m++)n+=e.lacingValues[m];let a=e,s=n,o=r,c=[];e:for(;;){let m=this.reader.requestSlice(a.dataStartPos,a.dataSize);m instanceof Promise&&(m=await m),p(m);let f=M(m,a.dataSize);for(;;){if(o===a.lacingValues.length){c.push(f.subarray(n,s));break}let b=a.lacingValues[o];if(s+=b,b<255){c.push(f.subarray(n,s));break e}o++}let g=a.headerStartPos+a.totalSize;for(;;){let b=this.reader.requestSliceRange(g,Wt,dr);if(b instanceof Promise&&(b=await b),!b)return null;let h=Dr(b);if(!h)return null;if(a=h,a.serialNumber===e.serialNumber)break;g=a.headerStartPos+a.totalSize}n=0,s=0,o=0}let u=c.reduce((m,f)=>m+f.length,0);if(u===0)return null;let d=new Uint8Array(u),l=0;for(let m=0;m<c.length;m++){let f=c[m];d.set(f,l),l+=f.length}return{data:d,endPage:a,endSegmentIndex:o}}async findNextPacketStart(e){if(e.endSegmentIndex<e.endPage.lacingValues.length-1)return{startPage:e.endPage,startSegmentIndex:e.endSegmentIndex+1};if(!!(e.endPage.headerType&4))return null;let n=e.endPage.headerStartPos+e.endPage.totalSize;for(;;){let a=this.reader.requestSliceRange(n,Wt,dr);if(a instanceof Promise&&(a=await a),!a)return null;let s=Dr(a);if(!s)return null;if(s.serialNumber===e.endPage.serialNumber)return{startPage:s,startSegmentIndex:0};n=s.headerStartPos+s.totalSize}}async getMimeType(){await this.readMetadata();let e=await Promise.all(this.tracks.map(r=>r.getCodecParameterString()));return Fn({codecStrings:e.filter(Boolean)})}async getTracks(){return await this.readMetadata(),this.tracks}async computeDuration(){let e=await this.getTracks(),r=await Promise.all(e.map(n=>n.computeDuration()));return Math.max(0,...r)}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}},fs=class{constructor(t,e){this.bitstream=t;this.demuxer=e;this.encodedPacketToMetadata=new WeakMap;this.sequentialScanCache=[];this.sequentialScanMutex=new Pe;this.internalSampleRate=t.codecInfo.codec==="opus"?Ne:t.sampleRate}getId(){return this.bitstream.serialNumber}getNumber(){let t=this.demuxer.tracks.findIndex(e=>e._backing.bitstream===this.bitstream);return p(t!==-1),t+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}async getDecoderConfig(){return p(this.bitstream.codecInfo.codec),{codec:this.bitstream.codecInfo.codec,numberOfChannels:this.bitstream.numberOfChannels,sampleRate:this.bitstream.sampleRate,description:this.bitstream.description??void 0}}getName(){return null}getLanguageCode(){return ee}getDisposition(){return{...we}}async getFirstTimestamp(){return 0}async computeDuration(){let t=await this.getPacket(1/0,{metadataOnly:!0});return(t?.timestamp??0)+(t?.duration??0)}granulePositionToTimestampInSamples(t){return this.bitstream.codecInfo.codec==="opus"?(p(this.bitstream.codecInfo.opusInfo),t-this.bitstream.codecInfo.opusInfo.preSkip):t}createEncodedPacketFromOggPacket(t,e,r){if(!t)return null;let{durationInSamples:n,vorbisBlockSize:a}=_n(t.data,this.bitstream.codecInfo,e.vorbisLastBlocksize),s=new W(r.metadataOnly?se:t.data,"key",Math.max(0,e.timestampInSamples)/this.internalSampleRate,n/this.internalSampleRate,t.endPage.headerStartPos+t.endSegmentIndex,t.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:t,timestampInSamples:e.timestampInSamples,durationInSamples:n,vorbisLastBlockSize:e.vorbisLastBlocksize,vorbisBlockSize:a}),s}async getFirstPacket(t){p(this.bitstream.lastMetadataPacket);let e=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!e)return null;let r=0;this.bitstream.codecInfo.codec==="opus"&&(p(this.bitstream.codecInfo.opusInfo),r-=this.bitstream.codecInfo.opusInfo.preSkip);let n=await this.demuxer.readPacket(e.startPage,e.startSegmentIndex);return this.createEncodedPacketFromOggPacket(n,{timestampInSamples:r,vorbisLastBlocksize:null},t)}async getNextPacket(t,e){let r=this.encodedPacketToMetadata.get(t);if(!r)throw new Error("Packet was not created from this track.");let n=await this.demuxer.findNextPacketStart(r.packet);if(!n)return null;let a=r.timestampInSamples+r.durationInSamples,s=await this.demuxer.readPacket(n.startPage,n.startSegmentIndex);return this.createEncodedPacketFromOggPacket(s,{timestampInSamples:a,vorbisLastBlocksize:r.vorbisBlockSize},e)}async getPacket(t,e){if(this.demuxer.reader.fileSize===null)return this.getPacketSequential(t,e);let r=dt(t*this.internalSampleRate);if(r===0)return this.getFirstPacket(e);if(r<0)return null;p(this.bitstream.lastMetadataPacket);let n=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!n)return null;let a=n.startPage,s=this.demuxer.reader.fileSize,o=[a];e:for(;a.headerStartPos+a.totalSize<s;){let k=a.headerStartPos,w=Math.floor((k+s)/2),S=w;for(;;){let T=Math.min(S+Mn,s-Wt),x=this.demuxer.reader.requestSlice(S,T-S);if(x instanceof Promise&&(x=await x),p(x),!gc(x,T)){s=w+Wt;continue e}let C=this.demuxer.reader.requestSliceRange(x.filePos,Wt,dr);C instanceof Promise&&(C=await C),p(C);let _=Dr(C);p(_);let B=!1;if(_.serialNumber===this.bitstream.serialNumber)B=!0;else{let F=this.demuxer.reader.requestSlice(_.headerStartPos,_.totalSize);F instanceof Promise&&(F=await F),p(F);let z=M(F,_.totalSize);B=En(z)===_.checksum}if(!B){S=_.headerStartPos+4;continue}if(B&&_.serialNumber!==this.bitstream.serialNumber){S=_.headerStartPos+_.totalSize;continue}if(_.granulePosition===-1){S=_.headerStartPos+_.totalSize;continue}this.granulePositionToTimestampInSamples(_.granulePosition)>r?s=_.headerStartPos:(a=_,o.push(_));continue e}}let c=n.startPage;for(let k of o){if(k.granulePosition===a.granulePosition)break;(!c||k.headerStartPos>c.headerStartPos)&&(c=k)}let u=c,d=[u];for(;!(u.serialNumber===this.bitstream.serialNumber&&u.granulePosition===a.granulePosition);){let k=u.headerStartPos+u.totalSize,w=this.demuxer.reader.requestSliceRange(k,Wt,dr);w instanceof Promise&&(w=await w),p(w);let S=Dr(w);p(S),u=S,u.serialNumber===this.bitstream.serialNumber&&d.push(u)}p(u.granulePosition!==-1);let l=null,m,f,g=u,b=0;if(u.headerStartPos===n.startPage.headerStartPos)m=this.granulePositionToTimestampInSamples(0),f=!0,l=0;else{m=0,f=!1;for(let S=u.lacingValues.length-1;S>=0;S--)if(u.lacingValues[S]<255){l=S+1;break}if(l===null)throw new Error("Invalid page with granule position: no packets end on this page.");b=l-1;let k={data:se,endPage:g,endSegmentIndex:b};if(await this.demuxer.findNextPacketStart(k)){let S=yc(d,u,l);p(S);let T=kc(d,S.page,S.segmentIndex);T&&(u=T.page,l=T.segmentIndex)}else for(;;){let S=yc(d,u,l);if(!S)break;let T=kc(d,S.page,S.segmentIndex);if(!T)break;if(u=T.page,l=T.segmentIndex,S.page.headerStartPos!==g.headerStartPos){g=S.page,b=S.segmentIndex;break}}}let h=null,y=null;for(;u!==null;){p(l!==null);let k=await this.demuxer.readPacket(u,l);if(!k)break;if(!(u.headerStartPos===n.startPage.headerStartPos&&l<n.startSegmentIndex)){let T=this.createEncodedPacketFromOggPacket(k,{timestampInSamples:m,vorbisLastBlocksize:y?.vorbisBlockSize??null},e);p(T);let x=this.encodedPacketToMetadata.get(T);if(p(x),!f&&k.endPage.headerStartPos===g.headerStartPos&&k.endSegmentIndex===b?(m=this.granulePositionToTimestampInSamples(u.granulePosition),f=!0,T=this.createEncodedPacketFromOggPacket(k,{timestampInSamples:m-x.durationInSamples,vorbisLastBlocksize:y?.vorbisBlockSize??null},e),p(T),x=this.encodedPacketToMetadata.get(T),p(x)):m+=x.durationInSamples,h=T,y=x,f&&(Math.max(m,0)>r||Math.max(x.timestampInSamples,0)===r))break}let S=await this.demuxer.findNextPacketStart(k);if(!S)break;u=S.startPage,l=S.startSegmentIndex}return h}async getPacketSequential(t,e){let r=await this.sequentialScanMutex.acquire();try{let n=dt(t*this.internalSampleRate);t=n/this.internalSampleRate;let a=N(this.sequentialScanCache,n,c=>c.timestampInSamples),s;if(a!==-1){let c=this.sequentialScanCache[a];s=this.createEncodedPacketFromOggPacket(c.packet,{timestampInSamples:c.timestampInSamples,vorbisLastBlocksize:c.vorbisLastBlockSize},e)}else s=await this.getFirstPacket(e);let o=0;for(;s&&s.timestamp<t;){let c=await this.getNextPacket(s,e);if(!c||c.timestamp>t)break;if(s=c,o++,o===100){o=0;let u=this.encodedPacketToMetadata.get(s);p(u),this.sequentialScanCache.length>0&&p(K(this.sequentialScanCache).timestampInSamples<=u.timestampInSamples),this.sequentialScanCache.push(u)}}return s}finally{r()}}getKeyPacket(t,e){return this.getPacket(t,e)}getNextKeyPacket(t,e){return this.getNextPacket(t,e)}},kc=(i,t,e)=>{let r=t,n=e;e:for(;;){for(n--,n;n>=0;n--)if(r.lacingValues[n]<255){n++;break e}if(p(n===-1),!(r.headerType&1)){n=0;break}let s=Oa(i,o=>o.headerStartPos<r.headerStartPos);if(!s)return null;r=s,n=r.lacingValues.length}if(p(n!==-1),n===r.lacingValues.length){let a=i[i.indexOf(r)+1];p(a),r=a,n=0}return{page:r,segmentIndex:n}},yc=(i,t,e)=>{if(e>0)return{page:t,segmentIndex:e-1};let r=Oa(i,n=>n.headerStartPos<t.headerStartPos);return r?{page:r,segmentIndex:r.lacingValues.length-1}:null};var Bn=class extends fe{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}async readMetadata(){return this.metadataPromise??=(async()=>{let e=this.reader.requestSlice(0,12);e instanceof Promise&&(e=await e),p(e);let r=re(e,4),n=r!=="RIFX",a=r==="RF64",s=St(e,n),o=a?this.reader.fileSize:Math.min(s+8,this.reader.fileSize??1/0);if(re(e,4)!=="WAVE")throw new Error("Invalid WAVE file - wrong format");let u=0,d=null,l=e.filePos;for(;o===null||l<o;){let f=this.reader.requestSlice(l,8);if(f instanceof Promise&&(f=await f),!f)break;let g=re(f,4),b=St(f,n),h=f.filePos;if(a&&u===0&&g!=="ds64")throw new Error('Invalid RF64 file: First chunk must be "ds64".');if(g==="fmt ")await this.parseFmtChunk(h,b,n);else if(g==="data"){if(d??=b,this.dataStart=f.filePos,this.dataSize=Math.min(d,(o??1/0)-this.dataStart),this.reader.fileSize===null)break}else if(g==="ds64"){let y=this.reader.requestSlice(h,b);if(y instanceof Promise&&(y=await y),!y)break;let k=hs(y,n);d=hs(y,n),o=Math.min(k+8,this.reader.fileSize??1/0)}else g==="LIST"?await this.parseListChunk(h,b,n):(g==="ID3 "||g==="id3 ")&&await this.parseId3Chunk(h,b);l=h+b+(b&1),u++}if(!this.audioInfo)throw new Error('Invalid WAVE file - missing "fmt " chunk');if(this.dataStart===-1)throw new Error('Invalid WAVE file - missing "data" chunk');let m=this.audioInfo.blockSizeInBytes;this.dataSize=Math.floor(this.dataSize/m)*m,this.tracks.push(new te(this.input,new ps(this)))})()}async parseFmtChunk(e,r,n){let a=this.reader.requestSlice(e,r);if(a instanceof Promise&&(a=await a),!a)return;let s=Ur(a,n),o=Ur(a,n),c=St(a,n);a.skip(4);let u=Ur(a,n),d;if(r===14?d=8:d=Ur(a,n),r>=18&&s!==357){let l=Ur(a,n),m=r-18;if(Math.min(m,l)>=22&&s===65534){a.skip(6);let g=M(a,16);s=g[0]|g[1]<<8}}(s===7||s===6)&&(d=8),this.audioInfo={format:s,numberOfChannels:o,sampleRate:c,sampleSizeInBytes:Math.ceil(d/8),blockSizeInBytes:u}}async parseListChunk(e,r,n){let a=this.reader.requestSlice(e,r);if(a instanceof Promise&&(a=await a),!a)return;let s=re(a,4);if(s!=="INFO"&&s!=="INF0")return;let o=a.filePos;for(;o<=e+r-8;){a.filePos=o;let c=re(a,4),u=St(a,n),d=M(a,u),l=0;for(let f=0;f<d.length&&d[f]!==0;f++)l++;let m=String.fromCharCode(...d.subarray(0,l));switch(this.metadataTags.raw??={},this.metadataTags.raw[c]=m,c){case"INAM":case"TITL":this.metadataTags.title??=m;break;case"TIT3":this.metadataTags.description??=m;break;case"IART":this.metadataTags.artist??=m;break;case"IPRD":this.metadataTags.album??=m;break;case"IPRT":case"ITRK":case"TRCK":{let f=m.split("/"),g=Number.parseInt(f[0],10),b=f[1]&&Number.parseInt(f[1],10);Number.isInteger(g)&&g>0&&(this.metadataTags.trackNumber??=g),b&&Number.isInteger(b)&&b>0&&(this.metadataTags.tracksTotal??=b)}break;case"ICRD":case"IDIT":{let f=new Date(m);Number.isNaN(f.getTime())||(this.metadataTags.date??=f)}break;case"YEAR":{let f=Number.parseInt(m,10);Number.isInteger(f)&&f>0&&(this.metadataTags.date??=new Date(f,0,1))}break;case"IGNR":case"GENR":this.metadataTags.genre??=m;break;case"ICMT":case"CMNT":case"COMM":this.metadataTags.comment??=m;break}o+=8+u+(u&1)}}async parseId3Chunk(e,r){let n=this.reader.requestSlice(e,r);if(n instanceof Promise&&(n=await n),!n)return;let a=Ke(n);if(a){let s=n.slice(e+10,a.size);Br(s,a,this.metadataTags)}}getCodec(){if(p(this.audioInfo),this.audioInfo.format===7)return"ulaw";if(this.audioInfo.format===6)return"alaw";if(this.audioInfo.format===1){if(this.audioInfo.sampleSizeInBytes===1)return"pcm-u8";if(this.audioInfo.sampleSizeInBytes===2)return"pcm-s16";if(this.audioInfo.sampleSizeInBytes===3)return"pcm-s24";if(this.audioInfo.sampleSizeInBytes===4)return"pcm-s32"}return this.audioInfo.format===3&&this.audioInfo.sampleSizeInBytes===4?"pcm-f32":null}async getMimeType(){return"audio/wav"}async computeDuration(){await this.readMetadata();let e=this.tracks[0];return p(e),e.computeDuration()}async getTracks(){return await this.readMetadata(),this.tracks}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}},Or=2048,ps=class{constructor(t){this.demuxer=t}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.format}async getDecoderConfig(){let t=this.demuxer.getCodec();return t?(p(this.demuxer.audioInfo),{codec:t,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null}async computeDuration(){let t=await this.getPacket(1/0,{metadataOnly:!0});return(t?.timestamp??0)+(t?.duration??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 ee}getDisposition(){return{...we}}async getFirstTimestamp(){return 0}async getPacketAtIndex(t,e){p(t>=0),p(this.demuxer.audioInfo);let r=t*Or*this.demuxer.audioInfo.blockSizeInBytes;if(r>=this.demuxer.dataSize)return null;let n=Math.min(Or*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-r);if(this.demuxer.reader.fileSize===null){let c=this.demuxer.reader.requestSlice(this.demuxer.dataStart+r,n);if(c instanceof Promise&&(c=await c),!c)return null}let a;if(e.metadataOnly)a=se;else{let c=this.demuxer.reader.requestSlice(this.demuxer.dataStart+r,n);c instanceof Promise&&(c=await c),p(c),a=M(c,n)}let s=t*Or/this.demuxer.audioInfo.sampleRate,o=n/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(t,this.demuxer.lastKnownPacketIndex),new W(a,"key",s,o,t,n)}getFirstPacket(t){return this.getPacketAtIndex(0,t)}async getPacket(t,e){p(this.demuxer.audioInfo);let r=Math.floor(Math.min(t*this.demuxer.audioInfo.sampleRate/Or,(this.demuxer.dataSize-1)/(Or*this.demuxer.audioInfo.blockSizeInBytes)));if(r<0)return null;let n=await this.getPacketAtIndex(r,e);if(n)return n;if(r===0)return null;p(this.demuxer.reader.fileSize===null);let a=await this.getPacketAtIndex(this.demuxer.lastKnownPacketIndex,e);for(;a;){let s=await this.getNextPacket(a,e);if(!s)break;a=s}return a}getNextPacket(t,e){p(this.demuxer.audioInfo);let r=Math.round(t.timestamp*this.demuxer.audioInfo.sampleRate/Or);return this.getPacketAtIndex(r+1,e)}getKeyPacket(t,e){return this.getPacket(t,e)}getNextKeyPacket(t,e){return this.getNextPacket(t,e)}};var xt=7,Re=9,ve=i=>{let t=i.filePos,e=M(i,9),r=new V(e);if(r.readBits(12)!==4095||(r.skipBits(1),r.readBits(2)!==0))return null;let s=r.readBits(1),o=r.readBits(2)+1,c=r.readBits(4);if(c===15)return null;r.skipBits(1);let u=r.readBits(3);if(u===0)throw new Error("ADTS frames with channel configuration 0 are not supported.");r.skipBits(1),r.skipBits(1),r.skipBits(1),r.skipBits(1);let d=r.readBits(13);r.skipBits(11);let l=r.readBits(2)+1;if(l!==1)throw new Error("ADTS frames with more than one AAC frame are not supported.");let m=null;return s===1?i.filePos-=2:m=r.readBits(16),{objectType:o,samplingFrequencyIndex:c,channelConfiguration:u,frameLength:d,numberOfAacFrames:l,crcCheck:m,startPos:t}};var Ti=1024,Dn=class extends fe{constructor(e){super(e);this.metadataPromise=null;this.firstFrameHeader=null;this.loadedSamples=[];this.metadataTags=null;this.tracks=[];this.readingMutex=new Pe;this.lastSampleLoaded=!1;this.lastLoadedPos=0;this.nextTimestampInSamples=0;this.reader=e._reader}async readMetadata(){return this.metadataPromise??=(async()=>{for(;!this.firstFrameHeader&&!this.lastSampleLoaded;)await this.advanceReader();p(this.firstFrameHeader),this.tracks=[new te(this.input,new gs(this))]})()}async advanceReader(){if(this.lastLoadedPos===0)for(;;){let o=this.reader.requestSlice(this.lastLoadedPos,rt);if(o instanceof Promise&&(o=await o),!o){this.lastSampleLoaded=!0;return}let c=Ke(o);if(!c)break;this.lastLoadedPos=o.filePos+c.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,xt,Re);if(e instanceof Promise&&(e=await e),!e){this.lastSampleLoaded=!0;return}let r=ve(e);if(!r){this.lastSampleLoaded=!0;return}if(this.reader.fileSize!==null&&r.startPos+r.frameLength>this.reader.fileSize){this.lastSampleLoaded=!0;return}this.firstFrameHeader||(this.firstFrameHeader=r);let n=Ue[r.samplingFrequencyIndex];p(n!==void 0);let a=Ti/n,s={timestamp:this.nextTimestampInSamples/n,duration:a,dataStart:r.startPos,dataSize:r.frameLength};this.loadedSamples.push(s),this.nextTimestampInSamples+=Ti,this.lastLoadedPos=r.startPos+r.frameLength}async getMimeType(){return"audio/aac"}async getTracks(){return await this.readMetadata(),this.tracks}async computeDuration(){await this.readMetadata();let e=this.tracks[0];return p(e),e.computeDuration()}async getMetadataTags(){let e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let r=0;for(;;){let n=this.reader.requestSlice(r,rt);if(n instanceof Promise&&(n=await n),!n)break;let a=Ke(n);if(!a)break;let s=this.reader.requestSlice(n.filePos,a.size);if(s instanceof Promise&&(s=await s),!s)break;Br(s,a,this.metadataTags),r=n.filePos+a.size}return this.metadataTags}finally{e()}}},gs=class{constructor(t){this.demuxer=t}getId(){return 1}getNumber(){return 1}async getFirstTimestamp(){return 0}getTimeResolution(){return this.getSampleRate()/Ti}async computeDuration(){let t=await this.getPacket(1/0,{metadataOnly:!0});return(t?.timestamp??0)+(t?.duration??0)}getName(){return null}getLanguageCode(){return ee}getCodec(){return"aac"}getInternalCodecId(){return p(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){p(this.demuxer.firstFrameHeader);let t=Je[this.demuxer.firstFrameHeader.channelConfiguration];return p(t!==void 0),t}getSampleRate(){p(this.demuxer.firstFrameHeader);let t=Ue[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return p(t!==void 0),t}getDisposition(){return{...we}}async getDecoderConfig(){return p(this.demuxer.firstFrameHeader),{codec:`mp4a.40.${this.demuxer.firstFrameHeader.objectType}`,numberOfChannels:this.getNumberOfChannels(),sampleRate:this.getSampleRate()}}async getPacketAtIndex(t,e){if(t===-1)return null;let r=this.demuxer.loadedSamples[t];if(!r)return null;let n;if(e.metadataOnly)n=se;else{let a=this.demuxer.reader.requestSlice(r.dataStart,r.dataSize);if(a instanceof Promise&&(a=await a),!a)return null;n=M(a,r.dataSize)}return new W(n,"key",r.timestamp,r.duration,t,r.dataSize)}getFirstPacket(t){return this.getPacketAtIndex(0,t)}async getNextPacket(t,e){let r=await this.demuxer.readingMutex.acquire();try{let n=ut(this.demuxer.loadedSamples,t.timestamp,s=>s.timestamp);if(n===-1)throw new Error("Packet was not created from this track.");let a=n+1;for(;a>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(a,e)}finally{r()}}async getPacket(t,e){let r=await this.demuxer.readingMutex.acquire();try{for(;;){let n=N(this.demuxer.loadedSamples,t,a=>a.timestamp);if(n===-1&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(n,e);if(n>=0&&n+1<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(n,e);await this.demuxer.advanceReader()}}finally{r()}}getKeyPacket(t,e){return this.getPacket(t,e)}getNextKeyPacket(t,e){return this.getNextPacket(t,e)}};var On=i=>i===0?null:i===1?192:i>=2&&i<=5?144*2**i:i===6?"uncommon-u8":i===7?"uncommon-u16":i>=8&&i<=15?2**i:null,wc=(i,t)=>{switch(i){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}},Un=i=>{let t=0,e=new V(M(i,1));for(;e.readBits(1)===1;)t++;if(t===0)return e.readBits(7);let r=[],n=t-1,a=new V(M(i,n)),s=8-t-1;for(let c=0;c<s;c++)r.unshift(e.readBits(1));for(let c=0;c<n;c++)for(let u=0;u<8;u++){let d=a.readBits(1);u<2||r.unshift(d)}return r.reduce((c,u,d)=>c|u<<d,0)},Vn=(i,t)=>{if(t==="uncommon-u16")return oe(i)+1;if(t==="uncommon-u8")return R(i)+1;if(typeof t=="number")return t;J(t),p(!1)},Tc=(i,t)=>t==="uncommon-u16"?oe(i):t==="uncommon-u16-10"?oe(i)*10:t==="uncommon-u8"?R(i):typeof t=="number"?t:null,Sc=i=>{let e=0;for(let r of i){e^=r;for(let n=0;n<8;n++)(e&128)!==0?e=e<<1^7:e<<=1,e&=255}return e};var zn=class extends fe{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 Pe;this.lastSampleLoaded=!1;this.reader=e._reader}async computeDuration(){return await this.readMetadata(),p(this.track),this.track.computeDuration()}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}async getTracks(){return await this.readMetadata(),p(this.track),[this.track]}async getMimeType(){return"audio/flac"}async readMetadata(){let e=4;return this.metadataPromise??=(async()=>{for(;this.reader.fileSize===null||e<this.reader.fileSize;){let r=this.reader.requestSlice(e,4);if(r instanceof Promise&&(r=await r),e+=4,r===null)throw new Error(`Metadata block at position ${e} is too small! Corrupted file.`);p(r);let n=R(r),a=Nt(r),s=(n&128)!==0;switch(n&127){case 0:{let c=this.reader.requestSlice(e,a);if(c instanceof Promise&&(c=await c),p(c),c===null)throw new Error(`StreamInfo block at position ${e} is too small! Corrupted file.`);let u=M(c,34),d=new V(u),l=d.readBits(16),m=d.readBits(16),f=d.readBits(24),g=d.readBits(24),b=d.readBits(20),h=d.readBits(3)+1;d.readBits(5);let y=d.readBits(36);d.skipBits(16*8);let k=new Uint8Array(42);k.set(new Uint8Array([102,76,97,67]),0),k.set(new Uint8Array([128,0,0,34]),4),k.set(u,8),this.audioInfo={numberOfChannels:h,sampleRate:b,totalSamples:y,minimumBlockSize:l,maximumBlockSize:m,minimumFrameSize:f,maximumFrameSize:g,description:k},this.track=new te(this.input,new bs(this));break}case 4:{let c=this.reader.requestSlice(e,a);c instanceof Promise&&(c=await c),p(c),ii(M(c,a),this.metadataTags);break}case 6:{let c=this.reader.requestSlice(e,a);c instanceof Promise&&(c=await c),p(c);let u=A(c),d=A(c),l=me.decode(M(c,d)),m=A(c),f=me.decode(M(c,m));c.skip(16);let g=A(c),b=M(c,g);this.metadataTags.images??=[],this.metadataTags.images.push({data:b,mimeType:l,kind:u===3?"coverFront":u===4?"coverBack":"unknown",description:f});break}default:break}if(e+=a,s){this.lastLoadedPos=e;break}}})()}async readNextFlacFrame({startPos:e,isFirstPacket:r}){p(this.audioInfo);let n=6,s=this.audioInfo.maximumFrameSize+16,o=await this.reader.requestSliceRange(e,this.audioInfo.minimumFrameSize,s);if(!o)return null;let c=this.readFlacFrameHeader({slice:o,isFirstPacket:r});if(!c)return null;for(o.filePos=e+this.audioInfo.minimumFrameSize;;){if(o.filePos>o.end-n)return{num:c.num,blockSize:c.blockSize,sampleRate:c.sampleRate,size:o.end-e,isLastFrame:!0};if(R(o)===255){let d=o.filePos,l=R(o),m=this.blockingBit===1?249:248;if(l!==m){o.filePos=d;continue}o.skip(-2);let f=o.filePos-e,g=this.readFlacFrameHeader({slice:o,isFirstPacket:!1});if(!g){o.filePos=d;continue}if(this.blockingBit===0){if(g.num-c.num!==1){o.filePos=d;continue}}else if(g.num-c.num!==c.blockSize){o.filePos=d;continue}return{num:c.num,blockSize:c.blockSize,sampleRate:c.sampleRate,size:f,isLastFrame:!1}}}}readFlacFrameHeader({slice:e,isFirstPacket:r}){let n=e.filePos,a=M(e,4),s=new V(a);if(s.readBits(15)!==32764)return null;if(this.blockingBit===null){p(r);let y=s.readBits(1);this.blockingBit=y}else if(this.blockingBit===1){if(p(!r),s.readBits(1)!==1)return null}else if(this.blockingBit===0){if(p(!r),s.readBits(1)!==0)return null}else throw new Error("Invalid blocking bit");let c=On(s.readBits(4));if(!c)return null;p(this.audioInfo);let u=wc(s.readBits(4),this.audioInfo.sampleRate);if(!u||(s.readBits(4),s.readBits(3),s.readBits(1)!==0))return null;let l=Un(e),m=Vn(e,c),f=Tc(e,u);if(f===null||f!==this.audioInfo.sampleRate)return null;let g=e.filePos-n,b=R(e);e.skip(-g),e.skip(-1);let h=Sc(M(e,g));return b!==h?null:{num:l,blockSize:m,sampleRate:f}}async advanceReader(){await this.readMetadata(),p(this.lastLoadedPos!==null),p(this.audioInfo);let e=this.lastLoadedPos,r=await this.readNextFlacFrame({startPos:e,isFirstPacket:this.loadedSamples.length===0});if(!r){this.lastSampleLoaded=!0;return}let n=this.loadedSamples[this.loadedSamples.length-1],s={blockOffset:n?n.blockOffset+n.blockSize:0,blockSize:r.blockSize,byteOffset:e,byteSize:r.size};if(this.lastLoadedPos=this.lastLoadedPos+r.size,this.loadedSamples.push(s),r.isLastFrame){this.lastSampleLoaded=!0;return}}},bs=class{constructor(t){this.demuxer=t}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}async computeDuration(){let t=await this.getPacket(1/0,{metadataOnly:!0});return(t?.timestamp??0)+(t?.duration??0)}getSampleRate(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return ee}getTimeResolution(){return p(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getDisposition(){return{...we}}async getFirstTimestamp(){return 0}async getDecoderConfig(){return p(this.demuxer.audioInfo),{codec:"flac",numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate,description:this.demuxer.audioInfo.description}}async getPacket(t,e){if(p(this.demuxer.audioInfo),t<0)throw new Error("Timestamp cannot be negative");let r=await this.demuxer.readingMutex.acquire();try{for(;;){let n=N(this.demuxer.loadedSamples,t,c=>c.blockOffset/this.demuxer.audioInfo.sampleRate);if(n===-1){await this.demuxer.advanceReader();continue}let a=this.demuxer.loadedSamples[n],s=a.blockOffset/this.demuxer.audioInfo.sampleRate,o=a.blockSize/this.demuxer.audioInfo.sampleRate;if(s+o<=t){if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(this.demuxer.loadedSamples.length-1,e);await this.demuxer.advanceReader();continue}return this.getPacketAtIndex(n,e)}}finally{r()}}async getNextPacket(t,e){let r=await this.demuxer.readingMutex.acquire();try{let n=t.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&n>=this.demuxer.loadedSamples.length)return null;for(;n>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(n,e)}finally{r()}}getKeyPacket(t,e){return this.getPacket(t,e)}getNextKeyPacket(t,e){return this.getNextPacket(t,e)}async getPacketAtIndex(t,e){let r=this.demuxer.loadedSamples[t];if(!r)return null;let n;if(e.metadataOnly)n=se;else{let o=this.demuxer.reader.requestSlice(r.byteOffset,r.byteSize);if(o instanceof Promise&&(o=await o),!o)return null;n=M(o,r.byteSize)}p(this.demuxer.audioInfo);let a=r.blockOffset/this.demuxer.audioInfo.sampleRate,s=r.blockSize/this.demuxer.audioInfo.sampleRate;return new W(n,"key",a,s,t,r.byteSize)}async getFirstPacket(t){for(;this.demuxer.loadedSamples.length===0&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(0,t)}};var Nn=i=>{let t="video/MP2T",e=[...new Set(i.filter(Boolean))];return e.length>0&&(t+=`; codecs="${e.join(", ")}"`),t};var Ln=class extends fe{constructor(e){super(e);this.metadataPromise=null;this.elementaryStreams=[];this.tracks=[];this.packetOffset=0;this.packetStride=-1;this.sectionEndPositions=[];this.seekChunkSize=5*1024*1024;this.minReferencePointByteDistance=-1;this.reader=e._reader}async readMetadata(){return this.metadataPromise??=(async()=>{let e=205,r=this.reader.requestSlice(0,e);r instanceof Promise&&(r=await r),p(r);let n=M(r,e);if(n[0]===71&&n[188]===71)this.packetOffset=0,this.packetStride=188;else if(n[0]===71&&n[204]===71)this.packetOffset=0,this.packetStride=204;else if(n[4]===71&&n[192]===71)this.packetOffset=4,this.packetStride=188;else throw new Error("Unreachable.");let a=256;this.minReferencePointByteDistance=a*this.packetStride;let s=this.packetOffset,o=null,c=!1,u=!1;for(;;){let d=await this.readPacketHeader(s);if(!d)break;if(d.payloadUnitStartIndicator===0){s+=this.packetStride;continue}let l=await this.readSection(s,!0,!u);if(!l)break;let m=3,f=32,g=!1;if(!u&&l.pid!==0&&!(l.payload[0]===0&&l.payload[1]===0&&l.payload[2]===1)){let y=new V(l.payload),k=y.readAlignedByte();y.skipBits(8*k),g=y.readBits(8)===2}if(l.pid===0&&!c){let h=new V(l.payload),y=h.readAlignedByte();h.skipBits(8*y),h.skipBits(14);let k=h.readBits(10);for(h.skipBits(40);8*(k+m)-h.pos>f;){let w=h.readBits(16);if(h.skipBits(3),w!==0){if(o!==null)throw new Error("Only files with a single program are supported.");o=h.readBits(13)}}if(o===null)throw new Error("Program Association Table must link to a Program Map Table.");c=!0}else if((l.pid===o||g)&&!u){let h=new V(l.payload),y=h.readAlignedByte();h.skipBits(8*y),h.skipBits(12);let k=h.readBits(12);h.skipBits(43);let w=h.readBits(13);h.skipBits(6);let S=h.readBits(10);for(h.skipBits(8*S);8*(k+m)-h.pos>f;){let T=h.readBits(8);h.skipBits(3);let x=h.readBits(13);h.skipBits(6);let P=h.readBits(10),C=h.pos+8*P,_=!1,B=!1;for(;h.pos<C;){let F=h.readBits(8),z=h.readBits(8);F===106?_=!0:(F===122||F===204)&&(B=!0),h.skipBits(8*z)}let E=null;switch(T){case 3:case 4:case 15:E={type:"audio",codec:T===15?"aac":"mp3",aacCodecInfo:null,numberOfChannels:-1,sampleRate:-1};break;case 27:case 36:E={type:"video",codec:T===27?"avc":"hevc",avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,reorderSize:-1};break;case 129:E={type:"audio",codec:"ac3",aacCodecInfo:null,numberOfChannels:-1,sampleRate:-1};break;case 135:E={type:"audio",codec:"eac3",aacCodecInfo:null,numberOfChannels:-1,sampleRate:-1};break;case 6:B?E={type:"audio",codec:"eac3",aacCodecInfo:null,numberOfChannels:-1,sampleRate:-1}:_&&(E={type:"audio",codec:"ac3",aacCodecInfo:null,numberOfChannels:-1,sampleRate:-1});break;default:console.warn(`Unsupported stream_type 0x${T.toString(16)}; ignoring stream.`)}E&&this.elementaryStreams.push({demuxer:this,pid:x,streamType:T,initialized:!1,firstSection:null,info:E,referencePesPackets:[]})}u=!0}else{let h=this.elementaryStreams.find(y=>y.pid===l.pid);if(h&&!h.initialized){let y=Si(l);if(!y)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${h.pid}`);if(h.firstSection=l,h.info.type==="video")if(h.info.codec==="avc"){if(h.info.avcCodecInfo=Sr(y.data),!h.info.avcCodecInfo)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from first packet.");let k=h.info.avcCodecInfo.sequenceParameterSets[0];p(k);let w=ri(k);h.info.width=w.displayWidth,h.info.height=w.displayHeight,h.info.colorSpace={primaries:Gt[w.colourPrimaries],transfer:Qt[w.transferCharacteristics],matrix:$t[w.matrixCoefficients],fullRange:!!w.fullRangeFlag},h.info.reorderSize=w.maxDecFrameBuffering,h.initialized=!0}else if(h.info.codec==="hevc"){if(h.info.hevcCodecInfo=xr(y.data),!h.info.hevcCodecInfo)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");let w=h.info.hevcCodecInfo.arrays.find(T=>T.nalUnitType===33).nalUnits[0];p(w);let S=ja(w);h.info.width=S.displayWidth,h.info.height=S.displayHeight,h.info.colorSpace={primaries:Gt[S.colourPrimaries],transfer:Qt[S.transferCharacteristics],matrix:$t[S.matrixCoefficients],fullRange:!!S.fullRangeFlag},h.info.reorderSize=S.maxDecFrameBuffering,h.initialized=!0}else throw new Error("Unhandled.");else if(h.info.codec==="aac"){let k=he.tempFromBytes(y.data),w=ve(k);if(!w)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");h.info.aacCodecInfo={isMpeg2:!1,objectType:w.objectType},h.info.numberOfChannels=Je[w.channelConfiguration],h.info.sampleRate=Ue[w.samplingFrequencyIndex],h.initialized=!0}else if(h.info.codec==="mp3"){let k=A(he.tempFromBytes(y.data)),w=Jt(k,y.data.byteLength);if(!w.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");h.info.numberOfChannels=w.header.channel===3?1:2,h.info.sampleRate=w.header.sampleRate,h.initialized=!0}else if(h.info.codec==="ac3"){let k=on(y.data);if(!k)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(k.fscod===3)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");h.info.numberOfChannels=ai[k.acmod]+k.lfeon,h.info.sampleRate=er[k.fscod],h.initialized=!0}else if(h.info.codec==="eac3"){let k=cn(y.data);if(!k)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");let w=un(k);if(w===null)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");h.info.numberOfChannels=dn(k),h.info.sampleRate=w,h.initialized=!0}else throw new Error("Unhandled.")}}if(u&&this.elementaryStreams.every(h=>h.initialized))break;s+=this.packetStride}if(!u)throw c?new Error("No Program Map Table found in the file."):new Error("No Program Association Table found in the file.");for(let d of this.elementaryStreams)d.info.type==="video"?this.tracks.push(new Fe(this.input,new ks(d))):this.tracks.push(new te(this.input,new ys(d)))})()}async getTracks(){return await this.readMetadata(),this.tracks}async getMetadataTags(){return{}}async computeDuration(){let e=await this.getTracks(),r=await Promise.all(e.map(n=>n.computeDuration()));return Math.max(0,...r)}async getMimeType(){await this.readMetadata();let e=await this.getTracks(),r=await Promise.all(e.map(n=>n.getCodecParameterString()));return Nn(r)}async readSection(e,r,n=!1){let a=e,s=e,o=[],c=0,u=null,d=!0,l=0;for(;;){let f=await this.readPacket(s);if(s+=this.packetStride,!f)break;if(u){if(f.pid!==u.pid){if(n)break;continue}if(f.payloadUnitStartIndicator===1)break}else{if(f.payloadUnitStartIndicator===0)break;u=f}let g=!!(f.adaptationFieldControl&2),b=!!(f.adaptationFieldControl&1),h=0;if(g&&(h=1+f.body[0],f===u&&h>1&&(l=f.body[1]>>6&1)),b&&(h===0?(o.push(f.body),c+=f.body.byteLength):(o.push(f.body.subarray(h)),c+=f.body.byteLength-h)),a=s,!r&&c>=64){d=!1;break}if(ut(this.sectionEndPositions,a,k=>k)!==-1){d=!1;break}}if(d){let f=N(this.sectionEndPositions,a,g=>g);this.sectionEndPositions.splice(f+1,0,a)}if(!u)return null;let m;if(o.length===1)m=o[0];else{let f=o.reduce((b,h)=>b+h.length,0);m=new Uint8Array(f);let g=0;for(let b of o)m.set(b,g),g+=b.length}return{startPos:e,endPos:r?a:null,pid:u.pid,payload:m,randomAccessIndicator:l}}async readPacketHeader(e){let r=this.reader.requestSlice(e,4);if(r instanceof Promise&&(r=await r),!r)return null;if(R(r)!==71)throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");let a=oe(r),s=a>>15,o=a>>14&1,c=a>>13&1,u=a&8191,d=R(r),l=d>>6,m=d>>4&3,f=d&15;return{payloadUnitStartIndicator:o,pid:u,adaptationFieldControl:m}}async readPacket(e){let r=this.reader.requestSlice(e,188);if(r instanceof Promise&&(r=await r),!r)return null;let n=M(r,188);if(n[0]!==71)throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");let s=(n[1]<<8)+n[2],o=s>>15,c=s>>14&1,u=s>>13&1,d=s&8191,l=n[3],m=l>>6,f=l>>4&3,g=l&15;return{payloadUnitStartIndicator:c,pid:d,adaptationFieldControl:f,body:n.subarray(4)}}},lr=i=>{if(i.payload.byteLength<3)return null;let t=new V(i.payload);if(t.readBits(24)!==1)return null;let r=t.readBits(8);if(t.skipBits(16),r===188||r===190||r===191||r===240||r===241||r===255||r===242||r===248)return null;t.skipBits(8);let n=t.readBits(2);t.skipBits(14);let a=0;if(n===2||n===3)t.skipBits(4),a+=t.readBits(3)*(1<<30),t.skipBits(1),a+=t.readBits(15)*32768,t.skipBits(1),a+=t.readBits(15);else throw new Error("PES packets without PTS are not currently supported. If you think this file should be supported, please report it.");return{sectionStartPos:i.startPos,sectionEndPos:i.endPos,pts:a,randomAccessIndicator:i.randomAccessIndicator}},Si=i=>{p(i.endPos!==null);let t=lr(i);if(!t)return null;let e=new V(i.payload);e.skipBits(32);let r=e.readBits(16),n=6;e.skipBits(16);let a=e.readBits(8),s=e.pos+8*a;e.pos=s;let o=s/8;p(Number.isInteger(o));let c=i.payload.subarray(o,r>0?n+r:i.payload.byteLength);return{...t,data:c}},Wn=class i{constructor(t){this.elementaryStream=t;this.packetBuffers=new WeakMap;this.packetSectionStarts=new WeakMap}getId(){return this.elementaryStream.pid}getNumber(){let t=this.elementaryStream.demuxer,e=this.elementaryStream.info.type,r=0;for(let n of t.tracks)if(n.type===e&&r++,p(n._backing instanceof i),n._backing.elementaryStream===this.elementaryStream)break;return r}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.elementaryStream.streamType}getName(){return null}getLanguageCode(){return ee}getDisposition(){return we}getTimeResolution(){return 9e4}async computeDuration(){let t=await this.getPacket(1/0,{metadataOnly:!0});return(t?.timestamp??0)+(t?.duration??0)}async getFirstTimestamp(){return(await this.getFirstPacket({metadataOnly:!0}))?.timestamp??0}createEncodedPacket(t,e,r){let n;return this.allPacketsAreKeyPackets()?n="key":n=t.randomAccessIndicator===1?"key":"delta",new W(r.metadataOnly?se:t.data,n,t.pts/9e4,Math.max(e/9e4,0),t.sequenceNumber,t.data.byteLength)}async getFirstPacket(t){let e=this.elementaryStream.firstSection;p(e);let r=Si(e);p(r);let n=new xi(this.elementaryStream,r),a=new Ci(this,n),s=await a.readNext();if(!s)return null;let o=this.createEncodedPacket(s.packet,s.duration,t);return this.packetBuffers.set(o,a),this.packetSectionStarts.set(o,s.packet.sectionStartPos),o}async getNextPacket(t,e){let r=this.packetBuffers.get(t);if(r){let d=await r.readNext();if(!d)return null;this.packetBuffers.delete(t);let l=this.createEncodedPacket(d.packet,d.duration,e);return this.packetBuffers.set(l,r),this.packetSectionStarts.set(l,d.packet.sectionStartPos),l}let n=this.packetSectionStarts.get(t);if(n===void 0)throw new Error("Packet was not created from this track.");let s=await this.elementaryStream.demuxer.readSection(n,!0);p(s);let o=Si(s);p(o);let c=new xi(this.elementaryStream,o);r=new Ci(this,c);let u=t.sequenceNumber;for(;;){let d=await r.readNext();if(!d)return null;if(d.packet.sequenceNumber>u){let l=this.createEncodedPacket(d.packet,d.duration,e);return this.packetBuffers.set(l,r),this.packetSectionStarts.set(l,d.packet.sectionStartPos),l}}}async getNextKeyPacket(t,e){let r=t;for(;;){if(r=await this.getNextPacket(r,e),!r)return null;if(r.type==="key")return r}}getPacket(t,e){return this.doPacketLookup(t,!1,e)}getKeyPacket(t,e){return this.doPacketLookup(t,!0,e)}async doPacketLookup(t,e,r){let n=dt(t*9e4),a=this.elementaryStream.demuxer,{reader:s,seekChunkSize:o}=a,c=this.elementaryStream.pid,u=async(w,S)=>{let T=w;for(;T<S;){let x=await a.readPacketHeader(T);if(!x)return null;if(x.pid===c&&x.payloadUnitStartIndicator===1){let P=await a.readSection(T,!1);if(!P)return null;let C=lr(P);if(C)return C}T+=a.packetStride}return null},d=this.elementaryStream.firstSection;p(d);let l=lr(d);if(p(l),n<l.pts)return null;let m,f=this.elementaryStream.referencePesPackets,g=N(f,n,w=>w.pts),b=g!==-1?f[g]:null;if(b&&n-b.pts<9e4/2)m=b.sectionStartPos;else{let w=0;if(s.fileSize!==null){let S=Math.ceil(s.fileSize/o);if(S>1){let T=0,x=S-1;for(w=T;T<=x;){let P=Math.floor((T+x)/2),C=qi(P*o,a.packetStride)+l.sectionStartPos,_=C+o,B=await u(C,_);if(!B){x=P-1;continue}B.pts<=n?(w=P,T=P+1):x=P-1}}}m=qi(w*o,a.packetStride)+l.sectionStartPos}let h=await u(m,s.fileSize??1/0);h||(h=l);let y=this.getReorderSize(),k=async(w,S)=>{let T=await a.readSection(w,!0);p(T);let x=Si(T);p(x);let P=new xi(this.elementaryStream,x),C=new Ci(this,P);for(;!((K(C.presentationOrderPackets)?.pts??-1/0)>=n||!await C.readNextPacket()););let _=gr(C.presentationOrderPackets,S);if(_===-1)return null;let B=C.presentationOrderPackets[_],E=_===0?0:B.pts-C.presentationOrderPackets[_-1].pts;for(;C.decodeOrderPackets[0]!==B;)C.decodeOrderPackets.shift();C.lastDuration=E;let F=await C.readNext();p(F);let z=this.createEncodedPacket(F.packet,F.duration,r);return this.packetBuffers.set(z,C),this.packetSectionStarts.set(z,F.packet.sectionStartPos),z};if(!e||this.allPacketsAreKeyPackets()){e:for(;;){let w=h.sectionStartPos+a.packetStride;for(;;){let S=await a.readPacketHeader(w);if(!S)break e;if(S.pid===c&&S.payloadUnitStartIndicator===1){let T=await a.readSection(w,!1);if(T){let x=lr(T);if(x){if(x.pts>n)break e;h=x,ws(this.elementaryStream,x);break}}}w+=a.packetStride}}e:for(let w=0;w<y;w++){let S=h.sectionStartPos-a.packetStride;for(;S>=a.packetOffset;){let T=await a.readPacketHeader(S);if(!T)break e;if(T.pid===c&&T.payloadUnitStartIndicator===1){let x=await a.readSection(S,!1);if(x){let P=lr(x);if(P){h=P;break}}}S-=a.packetStride}}return k(h.sectionStartPos,w=>w.pts<=n)}else{let w=m,S=null;for(;;){let T=null,x=w<=l.sectionStartPos,P;x?(P=l,T=l):P=await u(w,s.fileSize??1/0);let C=!1,_=0;e:for(;P&&!(S!==null&&P.sectionStartPos>=S||(P.randomAccessIndicator===1&&P.pts<=n&&(T=P),P.pts>n&&(C=!0),C&&(_++,_>=y)));){let E=P.sectionStartPos+a.packetStride;for(;;){let F=await a.readPacketHeader(E);if(!F)break e;if(F.pid===c&&F.payloadUnitStartIndicator===1){let z=await a.readSection(E,!1);if(z&&(P=lr(z),P)){ws(this.elementaryStream,P);break}}E+=a.packetStride}}if(T){let B=T;if(_===0)e:for(let F=0;F<y-1;F++){let z=B.sectionStartPos-a.packetStride;for(;z>=a.packetOffset;){let j=await a.readPacketHeader(z);if(!j)break e;if(j.pid===c&&j.payloadUnitStartIndicator===1){let G=await a.readSection(z,!1);if(G){let $=lr(G);if($){B=$;break}}}z-=a.packetStride}}let E=await k(B.sectionStartPos,F=>F.pts<=n&&F.randomAccessIndicator===1);return p(E),E}p(!x),S=w,w=Math.max(qi(w-l.sectionStartPos-o,a.packetStride)+l.sectionStartPos,l.sectionStartPos)}}}},ks=class extends Wn{constructor(t){super(t),this.elementaryStream=t,this.decoderConfig={codec:br({width:this.elementaryStream.info.width,height:this.elementaryStream.info.height,codec:this.elementaryStream.info.codec,codecDescription:null,colorSpace:this.elementaryStream.info.colorSpace,avcType:1,avcCodecInfo:this.elementaryStream.info.avcCodecInfo,hevcCodecInfo:this.elementaryStream.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null}),codedWidth:this.elementaryStream.info.width,codedHeight:this.elementaryStream.info.height,colorSpace:this.elementaryStream.info.colorSpace}}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getRotation(){return 0}async getColorSpace(){return this.elementaryStream.info.colorSpace}async canBeTransparent(){return!1}async getDecoderConfig(){return this.decoderConfig}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}},ys=class extends Wn{constructor(t){super(t),this.elementaryStream=t}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}async getDecoderConfig(){return{codec:kr({codec:this.elementaryStream.info.codec,codecDescription:null,aacCodecInfo:this.elementaryStream.info.aacCodecInfo}),numberOfChannels:this.elementaryStream.info.numberOfChannels,sampleRate:this.elementaryStream.info.sampleRate}}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 1}},ws=(i,t)=>{let e=i.referencePesPackets,r=N(e,t.sectionStartPos,n=>n.sectionStartPos);if(r>=0){let n=e[r];if(t.pts<=n.pts)return!1;let a=i.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-n.sectionStartPos<a)return!1;if(r<e.length-1){let s=e[r+1];if(s.pts<t.pts||s.sectionStartPos-t.sectionStartPos<a)return!1}}return e.splice(r+1,0,t),!0},nd=async i=>{p(!i.suppliedPacket);let t=i.elementaryStream;if(t.info.type==="video"){let e=t.info.codec,r=1024;if(e!=="avc"&&e!=="hevc")throw new Error("Unhandled.");let n=null;for(;;){let a=i.ensureBuffered(r);if(a instanceof Promise&&(a=await a),a===0)break;let s=i.currentPos,o=i.readBytes(a),c=o.byteLength,u=0;for(;u<c;){let d=o.indexOf(0,u);if(d===-1||d>=c)break;u=d;let l=s+u;if(u+4>=c){i.seekTo(l);break}let m=o[u+1],f=o[u+2],g=o[u+3],b=0,h=null;if(m===0&&f===0&&g===1?(b=4,h=o[u+4]):m===0&&f===1&&(b=3,h=g),b===0){u++;continue}let y=l;if(n===null){n=y,u+=b;continue}if(h!==null){let k=e==="avc"?gt(h):et(h);if(e==="avc"?k===9:k===35){let S=y-n;return i.seekTo(n),i.supplyPacket(S,0)}}u+=b}if(a<r)break}if(n!==null){let a=i.endPos-n;return i.seekTo(n),i.supplyPacket(a,0)}}else{let e=t.info.codec,r=128;for(;;){let n=i.ensureBuffered(r);n instanceof Promise&&(n=await n);let a=i.currentPos;for(;i.currentPos-a<n;){let s=i.readU8();if(e==="aac"){if(s!==255)continue;i.skip(-1);let o=i.currentPos,c=i.ensureBuffered(Re);if(c instanceof Promise&&(c=await c),c<Re)return;let u=i.readBytes(Re),d=ve(he.tempFromBytes(u));if(d){i.seekTo(o);let l=i.ensureBuffered(d.frameLength);return l instanceof Promise&&(l=await l),i.supplyPacket(l,Math.round(Ti*9e4/t.info.sampleRate))}else i.seekTo(o+1)}else if(e==="mp3"){if(s!==255)continue;i.skip(-1);let o=i.currentPos,c=i.ensureBuffered(4);if(c instanceof Promise&&(c=await c),c<4)return;let u=i.readBytes(4),d=D(u).getUint32(0),l=Jt(d,null);if(l.header){i.seekTo(o);let m=i.ensureBuffered(l.header.totalSize);m instanceof Promise&&(m=await m);let f=l.header.audioSamplesInFrame*9e4/t.info.sampleRate;return i.supplyPacket(m,Math.round(f))}else i.seekTo(o+1)}else if(e==="ac3"){if(s!==11)continue;i.skip(-1);let o=i.currentPos,c=i.ensureBuffered(5);if(c instanceof Promise&&(c=await c),c<5)return;let u=i.readBytes(5);if(u[0]!==11||u[1]!==119){i.seekTo(o+1);continue}let d=u[4]>>6,l=u[4]&63;if(d===3||l>37){i.seekTo(o+1);continue}let m=Ho[3*l+d];p(m!==void 0),i.seekTo(o),c=i.ensureBuffered(m),c instanceof Promise&&(c=await c);let f=Math.round(qo*9e4/t.info.sampleRate);return i.supplyPacket(c,f)}else if(e==="eac3"){if(s!==11)continue;i.skip(-1);let o=i.currentPos,c=i.ensureBuffered(5);if(c instanceof Promise&&(c=await c),c<5)return;let u=i.readBytes(5);if(u[0]!==11||u[1]!==119){i.seekTo(o+1);continue}let l=(((u[2]&7)<<8|u[3])+1)*2,f=u[4]>>6===3?3:u[4]>>4&3,g=Ka[f];i.seekTo(o),c=i.ensureBuffered(l),c instanceof Promise&&(c=await c);let b=g*256,h=Math.round(b*9e4/t.info.sampleRate);return i.supplyPacket(c,h)}else throw new Error("Unhandled.")}if(n<r)break}}},xi=class i{constructor(t,e){this.currentPos=0;this.pesPackets=[];this.currentPesPacketIndex=0;this.currentPesPacketPos=0;this.endPos=0;this.nextPts=0;this.suppliedPacket=null;this.elementaryStream=t,this.pid=t.pid,this.demuxer=t.demuxer,this.startingPesPacket=e}clone(){let t=new i(this.elementaryStream,this.startingPesPacket);return t.currentPos=this.currentPos,t.pesPackets=[...this.pesPackets],t.currentPesPacketIndex=this.currentPesPacketIndex,t.currentPesPacketPos=this.currentPesPacketPos,t.endPos=this.endPos,t.nextPts=this.nextPts,t}ensureBuffered(t){let e=this.endPos-this.currentPos;return e>=t?t:this.bufferData(t-e).then(()=>Math.min(this.endPos-this.currentPos,t))}getCurrentPesPacket(){let t=this.pesPackets[this.currentPesPacketIndex];return p(t),t}async bufferData(t){let e=this.endPos+t;for(;this.endPos<e;){let r;if(this.pesPackets.length===0)r=this.startingPesPacket;else{let n=K(this.pesPackets).sectionEndPos;for(p(n!==null);;){let a=await this.demuxer.readPacketHeader(n);if(!a)return;if(a.pid===this.pid){let s=await this.demuxer.readSection(n,!0);if(!s)return;let o=Si(s);if(o){r=o;break}}n+=this.demuxer.packetStride}}this.pesPackets.push(r),this.endPos+=r.data.byteLength,this.pesPackets.length===1&&(this.nextPts=r.pts)}}readBytes(t){let e=this.getCurrentPesPacket(),r=this.currentPos-this.currentPesPacketPos,n=r+t;if(this.currentPos+=t,n<=e.data.byteLength)return e.data.subarray(r,n);let a=new Uint8Array(t);a.set(e.data.subarray(r));let s=e.data.byteLength-r;for(;;){this.advanceCurrentPacket();let o=this.getCurrentPesPacket(),c=t-s;if(c<=o.data.byteLength){a.set(o.data.subarray(0,c),s);break}a.set(o.data,s),s+=o.data.byteLength}return a}readU8(){let t=this.getCurrentPesPacket(),e=this.currentPos-this.currentPesPacketPos;return this.currentPos++,e<t.data.byteLength?t.data[e]:(this.advanceCurrentPacket(),t=this.getCurrentPesPacket(),t.data[0])}seekTo(t){if(t!==this.currentPos){if(t<this.currentPos)for(;t<this.currentPesPacketPos;){this.currentPesPacketIndex--;let e=this.getCurrentPesPacket();this.currentPesPacketPos-=e.data.byteLength,this.nextPts=e.pts}else for(;;){let e=this.getCurrentPesPacket(),r=this.currentPesPacketPos+e.data.byteLength;if(t<r)break;this.currentPesPacketPos+=e.data.byteLength,this.currentPesPacketIndex++,this.nextPts=this.getCurrentPesPacket().pts}this.currentPos=t}}skip(t){this.seekTo(this.currentPos+t)}advanceCurrentPacket(){this.currentPesPacketPos+=this.getCurrentPesPacket().data.byteLength,this.currentPesPacketIndex++,this.nextPts=this.getCurrentPesPacket().pts}supplyPacket(t,e){let r=this.getCurrentPesPacket();ws(this.elementaryStream,r);let n=this.nextPts;this.nextPts+=e;let a=r.sectionStartPos,s=a+(this.currentPos-this.currentPesPacketPos),o=this.readBytes(t),c=r.randomAccessIndicator;p(this.elementaryStream.firstSection),r.sectionStartPos===this.elementaryStream.firstSection.startPos&&(c=1),this.suppliedPacket={pts:n,data:o,sequenceNumber:s,sectionStartPos:a,randomAccessIndicator:c},this.pesPackets.splice(0,this.currentPesPacketIndex),this.currentPesPacketIndex=0}},Ci=class{constructor(t,e){this.decodeOrderPackets=[];this.reorderBuffer=[];this.presentationOrderPackets=[];this.reachedEnd=!1;this.lastDuration=0;this.backing=t,this.context=e,this.reorderSize=t.getReorderSize(),p(this.reorderSize>=0)}async readNext(){if(this.decodeOrderPackets.length===0&&!await this.readNextPacket())return null;await this.ensureCurrentPacketHasNext();let t=this.decodeOrderPackets[0],e=this.presentationOrderPackets.indexOf(t);p(e!==-1);let r;for(e===this.presentationOrderPackets.length-1?r=this.lastDuration:(r=this.presentationOrderPackets[e+1].pts-t.pts,this.lastDuration=r),this.decodeOrderPackets.shift();this.presentationOrderPackets.length>0;){let n=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(n))break;this.presentationOrderPackets.shift()}return{packet:t,duration:r}}async readNextPacket(){if(this.reachedEnd)return!1;let t;return this.context.suppliedPacket?t=this.context.suppliedPacket:(await nd(this.context),t=this.context.suppliedPacket),this.context.suppliedPacket=null,t?(this.decodeOrderPackets.push(t),this.processPacketThroughReorderBuffer(t),!0):(this.reachedEnd=!0,this.flushReorderBuffer(),!1)}async ensureCurrentPacketHasNext(){let t=this.decodeOrderPackets[0];for(p(t);;){let e=this.presentationOrderPackets.indexOf(t);if(e!==-1&&e<=this.presentationOrderPackets.length-2||!await this.readNextPacket())break}}processPacketThroughReorderBuffer(t){if(this.reorderBuffer.push(t),this.reorderBuffer.length>=this.reorderSize){let e=0;for(let n=1;n<this.reorderBuffer.length;n++)this.reorderBuffer[n].pts<this.reorderBuffer[e].pts&&(e=n);let r=this.reorderBuffer.splice(e,1)[0];this.presentationOrderPackets.push(r)}}flushReorderBuffer(){this.reorderBuffer.sort((t,e)=>t.pts-e.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}};var Be=class{},Pi=class extends Be{async _getMajorBrand(t){let e=t._reader.requestSlice(0,12);return e instanceof Promise&&(e=await e),!e||(e.skip(4),re(e,4)!=="ftyp")?null:re(e,4)}_createDemuxer(t){return new kn(t)}},Hn=class extends Pi{async _canReadInput(t){let e=await this._getMajorBrand(t);return!!e&&e!=="qt  "}get name(){return"MP4"}get mimeType(){return"video/mp4"}},qn=class extends Pi{async _canReadInput(t){return await this._getMajorBrand(t)==="qt  "}get name(){return"QuickTime File Format"}get mimeType(){return"video/quicktime"}},Ai=class extends Be{async isSupportedEBMLOfDocType(t,e){let r=t._reader.requestSlice(0,qe);if(r instanceof Promise&&(r=await r),!r)return!1;let n=ss(r);if(n===null||n<1||n>8||L(r,n)!==440786851)return!1;let s=os(r);if(typeof s!="number")return!1;let o=t._reader.requestSlice(r.filePos,s);if(o instanceof Promise&&(o=await o),!o)return!1;let c=r.filePos;for(;o.filePos<=c+s-Ie;){let u=je(o);if(!u)break;let{id:d,size:l}=u,m=o.filePos;if(l===void 0)return!1;switch(d){case 17030:if(L(o,l)!==1)return!1;break;case 17143:if(L(o,l)!==1)return!1;break;case 17026:if(Lt(o,l)!==e)return!1;break;case 17031:if(L(o,l)>4)return!1;break}o.filePos=m+l}return!0}_canReadInput(t){return this.isSupportedEBMLOfDocType(t,"matroska")}_createDemuxer(t){return new An(t)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}},jn=class extends Ai{_canReadInput(t){return this.isSupportedEBMLOfDocType(t,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}},Kn=class extends Be{async _canReadInput(t){let e=0;for(;;){let l=t._reader.requestSlice(e,rt);if(l instanceof Promise&&(l=await l),!l)break;let m=Ke(l);if(!m)break;e=l.filePos+m.size}let r=await ki(t._reader,e,e+4096);if(!r)return!1;let n=r.header,a=Ot(n.mpegVersionId,n.channel),s=t._reader.requestSlice(r.startPos+a,4);if(s instanceof Promise&&(s=await s),!s)return!1;let o=A(s);if(o===Dt||o===Tr)return!0;e=r.startPos+r.header.totalSize;let u=await ki(t._reader,e,e+4);if(!u)return!1;let d=u.header;return!(n.channel!==d.channel||n.sampleRate!==d.sampleRate)}_createDemuxer(t){return new vn(t)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}},Gn=class extends Be{async _canReadInput(t){let e=t._reader.requestSlice(0,12);if(e instanceof Promise&&(e=await e),!e)return!1;let r=re(e,4);return r!=="RIFF"&&r!=="RIFX"&&r!=="RF64"?!1:(e.skip(4),re(e,4)==="WAVE")}_createDemuxer(t){return new Bn(t)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}},Qn=class extends Be{async _canReadInput(t){let e=t._reader.requestSlice(0,4);return e instanceof Promise&&(e=await e),e?re(e,4)==="OggS":!1}_createDemuxer(t){return new Rn(t)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}},$n=class extends Be{async _canReadInput(t){let e=t._reader.requestSlice(0,4);return e instanceof Promise&&(e=await e),e?re(e,4)==="fLaC":!1}get name(){return"FLAC"}get mimeType(){return"audio/flac"}_createDemuxer(t){return new zn(t)}},Xn=class extends Be{async _canReadInput(t){let e=0;for(;;){let s=t._reader.requestSlice(e,rt);if(s instanceof Promise&&(s=await s),!s)break;let o=Ke(s);if(!o)break;e=s.filePos+o.size}let r=t._reader.requestSliceRange(e,xt,Re);if(r instanceof Promise&&(r=await r),!r)return!1;let n=ve(r);if(!n||(e+=n.frameLength,r=t._reader.requestSliceRange(e,xt,Re),r instanceof Promise&&(r=await r),!r))return!1;let a=ve(r);return a?n.objectType===a.objectType&&n.samplingFrequencyIndex===a.samplingFrequencyIndex&&n.channelConfiguration===a.channelConfiguration:!1}_createDemuxer(t){return new Dn(t)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}},Yn=class extends Be{async _canReadInput(t){let e=205,r=t._reader.requestSlice(0,e);if(r instanceof Promise&&(r=await r),!r)return!1;let n=M(r,e);return n[0]===71&&n[188]===71||n[0]===71&&n[204]===71?!0:n[4]===71&&n[192]===71}_createDemuxer(t){return new Ln(t)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}},xc=new Hn,Cc=new qn,Pc=new Ai,Ac=new jn,Ic=new Kn,vc=new Gn,Ec=new Qn,_c=new Xn,Fc=new $n,Mc=new Yn,ad=[xc,Cc,Pc,Ac,vc,Ec,Fc,Ic,_c,Mc];var Rc=oo(Ts(),1);var sd=typeof Rc<"u"?Rc:void 0,Qe=class{constructor(){this._disposed=!1;this._sizePromise=null;this.onread=null}async getSizeOrNull(){if(this._disposed)throw new de;return this._sizePromise??=Promise.resolve(this._retrieveSize())}async getSize(){if(this._disposed)throw new de;let t=await this.getSizeOrNull();if(t===null)throw new Error("Cannot determine the size of an unsized source.");return t}},Ss=class extends Qe{constructor(e){if(!(e instanceof ArrayBuffer)&&!(typeof SharedArrayBuffer<"u"&&e instanceof SharedArrayBuffer)&&!ArrayBuffer.isView(e))throw new TypeError("buffer must be an ArrayBuffer, SharedArrayBuffer, or ArrayBufferView.");super();this._onreadCalled=!1;this._bytes=H(e),this._view=D(e)}_retrieveSize(){return this._bytes.byteLength}_read(){return this._onreadCalled||(this.onread?.(0,this._bytes.byteLength),this._onreadCalled=!0),{bytes:this._bytes,view:this._view,offset:0}}_dispose(){}},xs=class extends Qe{constructor(e,r={}){if(!(e instanceof Blob))throw new TypeError("blob must be a Blob.");if(!r||typeof r!="object")throw new TypeError("options must be an object.");if(r.maxCacheSize!==void 0&&(!Rt(r.maxCacheSize)||r.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 Ii({maxCacheSize:r.maxCacheSize??8*2**20,maxWorkerCount:4,runWorker:this._runWorker.bind(this),prefetchProfile:Is.fileSystem})}_retrieveSize(){let e=this._blob.size;return this._orchestrator.fileSize=e,e}_read(e,r){return this._orchestrator.read(e,r)}async _runWorker(e){let r=this._readers.get(e);for(r===void 0&&("stream"in this._blob&&!Mt()?r=this._blob.slice(e.currentPos).stream().getReader():r=null,this._readers.set(e,r));e.currentPos<e.targetPos&&!e.aborted;)if(r){let{done:n,value:a}=await r.read();if(n)throw this._orchestrator.forgetWorker(e),new Error("Blob reader stopped unexpectedly before all requested data was read.");if(e.aborted)break;this.onread?.(e.currentPos,e.currentPos+a.length),this._orchestrator.supplyWorkerData(e,a)}else{let n=await this._blob.slice(e.currentPos,e.targetPos).arrayBuffer();if(e.aborted)break;this.onread?.(e.currentPos,e.currentPos+n.byteLength),this._orchestrator.supplyWorkerData(e,new Uint8Array(n))}e.running=!1,e.aborted&&await r?.cancel()}_dispose(){this._orchestrator.dispose()}},Bc=.5*2**20,od=(i,t,e)=>{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 n=null;try{typeof window<"u"&&typeof window.location<"u"&&(n=new URL(e instanceof Request?e.url:e,window.location.href).origin)}catch{}if((typeof navigator<"u"&&typeof navigator.onLine=="boolean"?navigator.onLine:!0)&&n!==null&&n!==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(2**(i-2),16)},Cs=class extends Qe{constructor(e,r={}){if(typeof e!="string"&&!(e instanceof URL)&&!(typeof Request<"u"&&e instanceof Request))throw new TypeError("url must be a string, URL or Request.");if(!r||typeof r!="object")throw new TypeError("options must be an object.");if(r.requestInit!==void 0&&(!r.requestInit||typeof r.requestInit!="object"))throw new TypeError("options.requestInit, when provided, must be an object.");if(r.getRetryDelay!==void 0&&typeof r.getRetryDelay!="function")throw new TypeError("options.getRetryDelay, when provided, must be a function.");if(r.maxCacheSize!==void 0&&(!Rt(r.maxCacheSize)||r.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(r.parallelism!==void 0&&(!Number.isInteger(r.parallelism)||r.parallelism<1))throw new TypeError("options.parallelism, when provided, must be a positive number.");if(r.fetchFn!==void 0&&typeof r.fetchFn!="function")throw new TypeError("options.fetchFn, when provided, must be a function.");super();this._existingResponses=new WeakMap;this._url=e,this._options=r,this._getRetryDelay=r.getRetryDelay??od;let n=2;this._orchestrator=new Ii({maxCacheSize:r.maxCacheSize??64*2**20,maxWorkerCount:r.parallelism??n,runWorker:this._runWorker.bind(this),prefetchProfile:Is.network})}async _retrieveSize(){let e=new AbortController,r=await Va(this._options.fetchFn??fetch,this._url,Ua(this._options.requestInit??{},{headers:{Range:"bytes=0-"},signal:e.signal}),this._getRetryDelay,()=>this._disposed);if(!r.ok)throw new Error(`Error fetching ${String(this._url)}: ${r.status} ${r.statusText}`);let n,a;if(r.status===206)a=this._getTotalLengthFromRangeResponse(r),n=this._orchestrator.createWorker(0,Math.min(a,Bc));else{let s=r.headers.get("Content-Length");if(s)a=Number(s),n=this._orchestrator.createWorker(0,a),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.");else throw new Error(`HTTP response (status ${r.status}) must surface Content-Length header.`)}return this._orchestrator.fileSize=a,this._existingResponses.set(n,{response:r,abortController:e}),this._orchestrator.runWorker(n),a}_read(e,r){return this._orchestrator.read(e,r)}async _runWorker(e){for(;;){let r=this._existingResponses.get(e);this._existingResponses.delete(e);let n=r?.abortController,a=r?.response;if(n||(n=new AbortController,a=await Va(this._options.fetchFn??fetch,this._url,Ua(this._options.requestInit??{},{headers:{Range:`bytes=${e.currentPos}-`},signal:n.signal}),this._getRetryDelay,()=>this._disposed)),p(a),!a.ok)throw new Error(`Error fetching ${String(this._url)}: ${a.status} ${a.statusText}`);if(e.currentPos>0&&a.status!==206)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(!a.body)throw new Error("Missing HTTP response body stream. The used fetch function must provide the response body as a ReadableStream.");let s=a.body.getReader();for(;;){if(e.currentPos>=e.targetPos||e.aborted){n.abort(),e.running=!1;return}let o;try{o=await s.read()}catch(d){if(this._disposed)throw d;let l=this._getRetryDelay(1,d,this._url);if(l!==null){console.error("Error while reading response stream. Attempting to resume.",d),await new Promise(m=>setTimeout(m,1e3*l));break}else throw d}if(e.aborted)continue;let{done:c,value:u}=o;if(c){if(e.currentPos>=e.targetPos){this._orchestrator.forgetWorker(e),e.running=!1;return}break}this.onread?.(e.currentPos,e.currentPos+u.length),this._orchestrator.supplyWorkerData(e,u)}}}_getTotalLengthFromRangeResponse(e){let r=e.headers.get("Content-Range");if(r){let a=/\/(\d+)/.exec(r);if(a)return Number(a[1])}let n=e.headers.get("Content-Length");if(n)return Number(n);throw new Error("Partial HTTP response (status 206) must surface either Content-Range or Content-Length header.")}_dispose(){this._orchestrator.dispose()}},Ps=class extends Qe{constructor(e,r={}){if(typeof e!="string")throw new TypeError("filePath must be a string.");if(!r||typeof r!="object")throw new TypeError("options must be an object.");if(r.maxCacheSize!==void 0&&(!Rt(r.maxCacheSize)||r.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");super();this._fileHandle=null;this._streamSource=new Zn({getSize:async()=>(this._fileHandle=await sd.fs.open(e,"r"),(await this._fileHandle.stat()).size),read:async(n,a)=>{p(this._fileHandle);let s=new Uint8Array(a-n);return await this._fileHandle.read(s,0,a-n,n),s},maxCacheSize:r.maxCacheSize,prefetchProfile:"fileSystem"})}_read(e,r){return this._streamSource._read(e,r)}_retrieveSize(){return this._streamSource._retrieveSize()}_dispose(){this._streamSource._dispose(),this._fileHandle?.close(),this._fileHandle=null}},Zn=class extends Qe{constructor(t){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(typeof t.getSize!="function")throw new TypeError("options.getSize must be a function.");if(typeof t.read!="function")throw new TypeError("options.read must be a function.");if(t.dispose!==void 0&&typeof t.dispose!="function")throw new TypeError("options.dispose, when provided, must be a function.");if(t.maxCacheSize!==void 0&&(!Rt(t.maxCacheSize)||t.maxCacheSize<0))throw new TypeError("options.maxCacheSize, when provided, must be a non-negative number.");if(t.prefetchProfile&&!["none","fileSystem","network"].includes(t.prefetchProfile))throw new TypeError("options.prefetchProfile, when provided, must be one of 'none', 'fileSystem' or 'network'.");super(),this._options=t,this._orchestrator=new Ii({maxCacheSize:t.maxCacheSize??8*2**20,maxWorkerCount:2,prefetchProfile:Is[t.prefetchProfile??"none"],runWorker:this._runWorker.bind(this)})}_retrieveSize(){let t=this._options.getSize();if(t instanceof Promise)return t.then(e=>{if(!Number.isInteger(e)||e<0)throw new TypeError("options.getSize must return or resolve to a non-negative integer.");return this._orchestrator.fileSize=e,e});if(!Number.isInteger(t)||t<0)throw new TypeError("options.getSize must return or resolve to a non-negative integer.");return this._orchestrator.fileSize=t,t}_read(t,e){return this._orchestrator.read(t,e)}async _runWorker(t){for(;t.currentPos<t.targetPos&&!t.aborted;){let e=t.currentPos,r=t.targetPos,n=this._options.read(t.currentPos,r);if(n instanceof Promise&&(n=await n),t.aborted)break;if(n instanceof Uint8Array){if(n=H(n),n.length!==r-t.currentPos)throw new Error(`options.read returned a Uint8Array with unexpected length: Requested ${r-t.currentPos} bytes, but got ${n.length}.`);this.onread?.(t.currentPos,t.currentPos+n.length),this._orchestrator.supplyWorkerData(t,n)}else if(n instanceof ReadableStream){let a=n.getReader();for(;t.currentPos<r&&!t.aborted;){let{done:s,value:o}=await a.read();if(s){if(t.currentPos<r)throw new Error(`ReadableStream returned by options.read ended before supplying enough data. Requested ${r-e} bytes, but got ${t.currentPos-e}`);break}if(!(o instanceof Uint8Array))throw new TypeError("ReadableStream returned by options.read must yield Uint8Array chunks.");if(t.aborted)break;let c=H(o);this.onread?.(t.currentPos,t.currentPos+c.length),this._orchestrator.supplyWorkerData(t,c)}}else throw new TypeError("options.read must return or resolve to a Uint8Array or a ReadableStream.")}t.running=!1}_dispose(){this._orchestrator.dispose(),this._options.dispose?.()}},As=class extends Qe{constructor(e,r={}){if(!(e instanceof ReadableStream))throw new TypeError("stream must be a ReadableStream.");if(!r||typeof r!="object")throw new TypeError("options must be an object.");if(r.maxCacheSize!==void 0&&(!Rt(r.maxCacheSize)||r.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=r.maxCacheSize??16*2**20}_retrieveSize(){return this._endIndex}_read(e,r){if(this._endIndex!==null&&r>this._endIndex)return null;this._maxRequestedIndex=Math.max(this._maxRequestedIndex,r);let n=N(this._cache,e,l=>l.start),a=n!==-1?this._cache[n]:null;if(a&&a.start<=e&&r<=a.end)return{bytes:a.bytes,view:a.view,offset:a.start};let s=e,o=new Uint8Array(r-e);if(n!==-1)for(let l=n;l<this._cache.length;l++){let m=this._cache[l];if(m.start>=r)break;let f=Math.max(e,m.start);f>s&&this._throwDueToCacheMiss();let g=Math.min(r,m.end);f<g&&(o.set(m.bytes.subarray(f-m.start,g-m.start),f-e),s=g)}if(s===r)return{bytes:o,view:D(o),offset:e};this._currentIndex>s&&this._throwDueToCacheMiss();let{promise:c,resolve:u,reject:d}=Y();return this._pendingSlices.push({start:e,end:r,bytes:o,resolve:u,reject:d}),this._targetIndex=Math.max(this._targetIndex,r),this._pulling||(this._pulling=!0,this._pull().catch(l=>{if(this._pulling=!1,this._pendingSlices.length>0)this._pendingSlices.forEach(m=>m.reject(l)),this._pendingSlices.length=0;else throw l})),c}_throwDueToCacheMiss(){throw new Error("Read is before the cached region. 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m=n.readId3V2EncodingAndText(o).split("/"),f=Number.parseInt(m[0],10),g=m[1]&&Number.parseInt(m[1],10);Number.isInteger(f)&&f>0&&(e.trackNumber??=f),g&&Number.isInteger(g)&&g>0&&(e.tracksTotal??=g)}break;case"TPOS":case"TPA":{let m=n.readId3V2EncodingAndText(o).split("/"),f=Number.parseInt(m[0],10),g=m[1]&&Number.parseInt(m[1],10);Number.isInteger(f)&&f>0&&(e.discNumber??=f),g&&Number.isInteger(g)&&g>0&&(e.discsTotal??=g)}break;case"TCON":case"TCO":{let l=n.readId3V2EncodingAndText(o),m=/^\((\d+)\)/.exec(l);if(m){let f=Number.parseInt(m[1]);if(zr[f]!==void 0){e.genre??=zr[f];break}}if(m=/^\d+$/.exec(l),m){let f=Number.parseInt(m[0]);if(zr[f]!==void 0){e.genre??=zr[f];break}}e.genre??=l}break;case"TDRC":case"TDAT":{let l=n.readId3V2EncodingAndText(o),m=new Date(l);Number.isNaN(m.getTime())||(e.date??=m)}break;case"TYER":case"TYE":{let l=n.readId3V2EncodingAndText(o),m=Number.parseInt(l,10);Number.isInteger(m)&&(e.date??=new Date(m,0,1))}break;case"USLT":case"ULT":{let l=n.readU8();n.pos+=3,n.readId3V2Text(l,o),e.lyrics??=n.readId3V2Text(l,o)}break;case"COMM":case"COM":{let l=n.readU8();n.pos+=3,n.readId3V2Text(l,o),e.comment??=n.readId3V2Text(l,o)}break;case"APIC":case"PIC":{let l=n.readId3V2TextEncoding(),m;if(t.majorVersion===2){let h=n.readAscii(3);m=h==="PNG"?"image/png":h==="JPG"?"image/jpeg":"image/*"}else m=n.readId3V2Text(l,o);let f=n.readU8(),g=n.readId3V2Text(l,o).trimEnd(),b=o-n.pos;if(b>=0){let h=n.readBytes(b);e.images||(e.images=[]),e.images.push({data:h,mimeType:m,kind:f===3?"coverFront":f===4?"coverBack":"unknown",description:g})}}break;default:n.pos+=a.size;break}n.pos=o}},vs=class{constructor(t,e){this.header=t;this.bytes=e;this.pos=0;this.view=new DataView(e.buffer,e.byteOffset,e.byteLength)}frameHeaderSize(){return this.header.majorVersion===2?6:10}ununsynchronizeAll(){let t=[];for(let e=0;e<this.bytes.length;e++){let r=this.bytes[e];t.push(r),r===255&&e!==this.bytes.length-1&&this.bytes[e]===0&&e++}this.bytes=new Uint8Array(t),this.view=new DataView(this.bytes.buffer)}ununsynchronizeRegion(t,e){let r=[];for(let s=t;s<e;s++){let o=this.bytes[s];r.push(o),o===255&&s!==e-1&&this.bytes[s+1]===0&&s++}let n=this.bytes.subarray(0,t),a=this.bytes.subarray(e);this.bytes=new Uint8Array(n.length+r.length+a.length),this.bytes.set(n,0),this.bytes.set(r,n.length),this.bytes.set(a,n.length+r.length),this.view=new DataView(this.bytes.buffer)}removeFooter(){this.bytes=this.bytes.subarray(0,this.bytes.length-rt),this.view=new DataView(this.bytes.buffer)}readBytes(t){let e=this.bytes.subarray(this.pos,this.pos+t);return this.pos+=t,e}readU8(){let t=this.view.getUint8(this.pos);return this.pos+=1,t}readU16(){let t=this.view.getUint16(this.pos,!1);return this.pos+=2,t}readU24(){let t=this.view.getUint16(this.pos,!1),e=this.view.getUint8(this.pos+1);return this.pos+=3,t*256+e}readU32(){let t=this.view.getUint32(this.pos,!1);return this.pos+=4,t}readAscii(t){let e="";for(let r=0;r<t;r++)e+=String.fromCharCode(this.view.getUint8(this.pos+r));return this.pos+=t,e}readId3V2Frame(){if(this.header.majorVersion===2){let t=this.readAscii(3);if(t==="\0\0\0")return null;let e=this.readU24();return{id:t,size:e,flags:0}}else{let t=this.readAscii(4);if(t==="\0\0\0\0")return null;let e=this.readU32(),r=this.header.majorVersion===4?Yi(e):e,n=this.readU16(),a=this.pos,s=o=>{let c=this.pos+o;if(c>this.bytes.length)return!1;if(c<=this.bytes.length-this.frameHeaderSize()){this.pos+=o;let u=this.readAscii(4);if(u!=="\0\0\0\0"&&!/[0-9A-Z]{4}/.test(u))return!1}return!0};if(!s(r)){let o=this.header.majorVersion===4?e:Yi(e);s(o)&&(r=o)}return this.pos=a,{id:t,size:r,flags:n}}}readId3V2TextEncoding(){let t=this.readU8();if(t>3)throw new Error(`Unsupported text encoding: ${t}`);return t}readId3V2Text(t,e){let r=this.pos,n=this.readBytes(e-this.pos);switch(t){case 0:{let a="";for(let s=0;s<n.length;s++){let o=n[s];if(o===0){this.pos=r+s+1;break}a+=String.fromCharCode(o)}return a}case 1:if(n[0]===255&&n[1]===254){let a=new TextDecoder("utf-16le"),s=Zt(n.findIndex((o,c)=>o===0&&n[c+1]===0&&c%2===0),n.length);return this.pos=r+Math.min(s+2,n.length),a.decode(n.subarray(2,s))}else if(n[0]===254&&n[1]===255){let a=new TextDecoder("utf-16be"),s=Zt(n.findIndex((o,c)=>o===0&&n[c+1]===0&&c%2===0),n.length);return this.pos=r+Math.min(s+2,n.length),a.decode(n.subarray(2,s))}else{let a=Zt(n.findIndex(s=>s===0),n.length);return this.pos=r+Math.min(a+1,n.length),me.decode(n.subarray(0,a))}case 2:{let a=new TextDecoder("utf-16be"),s=Zt(n.findIndex((o,c)=>o===0&&n[c+1]===0&&c%2===0),n.length);return this.pos=r+Math.min(s+2,n.length),a.decode(n.subarray(0,s))}case 3:{let a=Zt(n.findIndex(s=>s===0),n.length);return this.pos=r+Math.min(a+1,n.length),me.decode(n.subarray(0,a))}}}readId3V2EncodingAndText(t){if(this.pos>=t)return"";let e=this.readId3V2TextEncoding();return this.readId3V2Text(e,t)}},Ht=class{constructor(t){this.helper=new Uint8Array(8);this.helperView=D(this.helper);this.writer=t}writeId3V2Tag(t){let e=this.writer.getPos();this.writeAscii("ID3"),this.writeU8(4),this.writeU8(0),this.writeU8(0),this.writeSynchsafeU32(0);let r=this.writer.getPos(),n=new Set;for(let{key:o,value:c}of ze(t))switch(o){case"title":this.writeId3V2TextFrame("TIT2",c),n.add("TIT2");break;case"description":this.writeId3V2TextFrame("TIT3",c),n.add("TIT3");break;case"artist":this.writeId3V2TextFrame("TPE1",c),n.add("TPE1");break;case"album":this.writeId3V2TextFrame("TALB",c),n.add("TALB");break;case"albumArtist":this.writeId3V2TextFrame("TPE2",c),n.add("TPE2");break;case"trackNumber":{let u=t.tracksTotal!==void 0?`${c}/${t.tracksTotal}`:c.toString();this.writeId3V2TextFrame("TRCK",u),n.add("TRCK")}break;case"discNumber":{let u=t.discsTotal!==void 0?`${c}/${t.discsTotal}`:c.toString();this.writeId3V2TextFrame("TPOS",u),n.add("TPOS")}break;case"genre":this.writeId3V2TextFrame("TCON",c),n.add("TCON");break;case"date":this.writeId3V2TextFrame("TDRC",c.toISOString().slice(0,10)),n.add("TDRC");break;case"lyrics":this.writeId3V2LyricsFrame(c),n.add("USLT");break;case"comment":this.writeId3V2CommentFrame(c),n.add("COMM");break;case"images":{let u={coverFront:3,coverBack:4,unknown:0};for(let d of c){let l=u[d.kind]??0,m=d.description??"";this.writeId3V2ApicFrame(d.mimeType,l,m,d.data)}}break;case"tracksTotal":case"discsTotal":break;case"raw":break;default:J(o)}if(t.raw)for(let o in t.raw){let c=t.raw[o];if(c==null||o.length!==4||n.has(o))continue;let u;if(typeof c=="string"){let d=X.encode(c);u=new Uint8Array(d.byteLength+2),u[0]=3,u.set(d,1)}else if(c instanceof Uint8Array)u=c;else continue;this.writeAscii(o),this.writeSynchsafeU32(u.byteLength),this.writeU16(0),this.writer.write(u)}let a=this.writer.getPos(),s=a-r;return this.writer.seek(e+6),this.writeSynchsafeU32(s),this.writer.seek(a),s+10}writeU8(t){this.helper[0]=t,this.writer.write(this.helper.subarray(0,1))}writeU16(t){this.helperView.setUint16(0,t,!1),this.writer.write(this.helper.subarray(0,2))}writeU32(t){this.helperView.setUint32(0,t,!1),this.writer.write(this.helper.subarray(0,4))}writeAscii(t){for(let e=0;e<t.length;e++)this.helper[e]=t.charCodeAt(e);this.writer.write(this.helper.subarray(0,t.length))}writeSynchsafeU32(t){this.writeU32(Bo(t))}writeIsoString(t){let e=new Uint8Array(t.length+1);for(let r=0;r<t.length;r++)e[r]=t.charCodeAt(r);e[t.length]=0,this.writer.write(e)}writeUtf8String(t){let e=X.encode(t);this.writer.write(e),this.writeU8(0)}writeId3V2TextFrame(t,e){let r=Ft(e),a=1+(r?e.length:X.encode(e).byteLength)+1;this.writeAscii(t),this.writeSynchsafeU32(a),this.writeU16(0),this.writeU8(r?0:3),r?this.writeIsoString(e):this.writeUtf8String(e)}writeId3V2LyricsFrame(t){let e=Ft(t),r="",n=4+r.length+1+t.length+1;this.writeAscii("USLT"),this.writeSynchsafeU32(n),this.writeU16(0),this.writeU8(e?0:3),this.writeAscii("und"),e?(this.writeIsoString(r),this.writeIsoString(t)):(this.writeUtf8String(r),this.writeUtf8String(t))}writeId3V2CommentFrame(t){let e=Ft(t),r=e?t.length:X.encode(t).byteLength,n="",a=4+n.length+1+r+1;this.writeAscii("COMM"),this.writeSynchsafeU32(a),this.writeU16(0),this.writeU8(e?0:3),this.writeU8(117),this.writeU8(110),this.writeU8(100),e?(this.writeIsoString(n),this.writeIsoString(t)):(this.writeUtf8String(n),this.writeUtf8String(t))}writeId3V2ApicFrame(t,e,r,n){let a=Ft(t)&&Ft(r),s=a?r.length:X.encode(r).byteLength,o=1+t.length+1+1+s+1+n.byteLength;this.writeAscii("APIC"),this.writeSynchsafeU32(o),this.writeU16(0),this.writeU8(a?0:3),a?this.writeIsoString(t):this.writeUtf8String(t),this.writeU8(e),a?this.writeIsoString(r):this.writeUtf8String(r),this.writer.write(n)}};var ge=class{constructor(t){this.mutex=new Pe;this.firstMediaStreamTimestamp=null;this.trackTimestampInfo=new WeakMap;this.output=t}onTrackClose(t){}validateAndNormalizeTimestamp(t,e,r){e+=t.source._timestampOffset;let n=this.trackTimestampInfo.get(t);if(!n){if(!r)throw new Error("First packet must be a key packet.");n={maxTimestamp:e,maxTimestampBeforeLastKeyPacket:e},this.trackTimestampInfo.set(t,n)}if(e<0)throw new Error(`Timestamps must be non-negative (got ${e}s).`);if(r&&(n.maxTimestampBeforeLastKeyPacket=n.maxTimestamp),e<n.maxTimestampBeforeLastKeyPacket)throw new Error(`Timestamps cannot be smaller than the largest timestamp of the previous GOP (a GOP begins with a key packet and ends right before the next key packet). 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this.mutex.acquire();try{if(this.validateAndNormalizeTimestamp(e,r.timestamp,r.type==="key"),this.inputIsAdts===null){Ae(n);let s=n?.decoderConfig?.description;if(this.inputIsAdts=!s,!this.inputIsAdts){let o=ht(H(s)),c=ea(o);this.header=c.header,this.headerBitstream=c.bitstream}}if(this.inputIsAdts){let s=this.writer.getPos();this.writer.write(r.data),this.format._options.onFrame&&this.format._options.onFrame(r.data,s)}else{p(this.header);let s=r.data.byteLength+this.header.byteLength;ta(this.headerBitstream,s);let o=this.writer.getPos();if(this.writer.write(this.header),this.writer.write(r.data),this.format._options.onFrame){let c=new Uint8Array(s);c.set(this.header,0),c.set(r.data,this.header.byteLength),this.format._options.onFrame(c,o)}}await this.writer.flush()}finally{a()}}async addSubtitleCue(){throw new Error("ADTS does not support subtitles.")}async finalize(){}};var Dc=new Uint8Array([102,76,97,67]),ud=38,dd=34,ia=class extends ge{constructor(e,r){super(e);this.metadataWritten=!1;this.blockSizes=[];this.frameSizes=[];this.sampleRate=null;this.channels=null;this.bitsPerSample=null;this.writer=e._writer,this.format=r}async start(){this.writer.write(Dc)}writeHeader({bitsPerSample:e,minimumBlockSize:r,maximumBlockSize:n,minimumFrameSize:a,maximumFrameSize:s,sampleRate:o,channels:c,totalSamples:u}){p(this.writer.getPos()===4);let d=!mt(this.output._metadataTags),l=new V(new Uint8Array(4));l.writeBits(1,+!d),l.writeBits(7,0),l.writeBits(24,dd),this.writer.write(l.bytes);let m=new V(new Uint8Array(18));if(m.writeBits(16,r),m.writeBits(16,n),m.writeBits(24,a),m.writeBits(24,s),m.writeBits(20,o),m.writeBits(3,c-1),m.writeBits(5,e-1),u>=2**32)throw new Error("This muxer only supports writing up to 2 ** 32 samples");m.writeBits(4,0),m.writeBits(32,u),this.writer.write(m.bytes),this.writer.write(new Uint8Array(16))}writePictureBlock(e){let r=32+e.mimeType.length+(e.description?.length??0)+e.data.length,n=new Uint8Array(r),a=0,s=D(n);s.setUint32(a,e.kind==="coverFront"?3:e.kind==="coverBack"?4:0),a+=4,s.setUint32(a,e.mimeType.length),a+=4,n.set(X.encode(e.mimeType),8),a+=e.mimeType.length,s.setUint32(a,e.description?.length??0),a+=4,n.set(X.encode(e.description??""),a),a+=e.description?.length??0,a+=16,s.setUint32(a,e.data.length),a+=4,n.set(e.data,a),a+=e.data.length,p(a===r);let o=new V(new Uint8Array(4));o.writeBits(1,0),o.writeBits(7,6),o.writeBits(24,r),this.writer.write(o.bytes),this.writer.write(n)}writeVorbisCommentAndPictureBlock(){if(this.writer.seek(ud+Dc.byteLength),mt(this.output._metadataTags)){this.metadataWritten=!0;return}let e=this.output._metadataTags.images??[];for(let a of e)this.writePictureBlock(a);let r=ni(new Uint8Array(0),this.output._metadataTags,!1),n=new V(new Uint8Array(4));n.writeBits(1,1),n.writeBits(7,4),n.writeBits(24,r.length),this.writer.write(n.bytes),this.writer.write(r),this.metadataWritten=!0}async getMimeType(){return"audio/flac"}async addEncodedVideoPacket(){throw new Error("FLAC does not support video.")}async addEncodedAudioPacket(e,r,n){let a=await this.mutex.acquire();Ae(n),p(n),p(n.decoderConfig),p(n.decoderConfig.description);try{if(this.validateAndNormalizeTimestamp(e,r.timestamp,r.type==="key"),this.sampleRate===null&&(this.sampleRate=n.decoderConfig.sampleRate),this.channels===null&&(this.channels=n.decoderConfig.numberOfChannels),this.bitsPerSample===null){let m=new V(H(n.decoderConfig.description));m.skipBits(167);let f=m.readBits(5)+1;this.bitsPerSample=f}this.metadataWritten||this.writeVorbisCommentAndPictureBlock();let s=he.tempFromBytes(r.data);M(s,2);let o=M(s,2),c=new V(o),u=On(c.readBits(4));if(u===null)throw new Error("Invalid FLAC frame: Invalid block size.");Un(s);let d=Vn(s,u);this.blockSizes.push(d),this.frameSizes.push(r.data.length);let l=this.writer.getPos();this.writer.write(r.data),this.format._options.onFrame&&this.format._options.onFrame(r.data,l),await this.writer.flush()}finally{a()}}addSubtitleCue(){throw new Error("FLAC does not support subtitles.")}async finalize(){let e=await this.mutex.acquire(),r=1/0,n=0,a=1/0,s=0,o=0;for(let c=0;c<this.blockSizes.length;c++)a=Math.min(a,this.frameSizes[c]),s=Math.max(s,this.frameSizes[c]),n=Math.max(n,this.blockSizes[c]),o+=this.blockSizes[c],c!==this.blockSizes.length-1&&(r=Math.min(r,this.blockSizes[c]));p(this.sampleRate!==null),p(this.channels!==null),p(this.bitsPerSample!==null),this.writer.seek(4),this.writeHeader({minimumBlockSize:r,maximumBlockSize:n,minimumFrameSize:a,maximumFrameSize:s,sampleRate:this.sampleRate,channels:this.channels,bitsPerSample:this.bitsPerSample,totalSamples:o}),e()}};var Ei=/(?:(.+?)\n)?((?:\d{2}:)?\d{2}:\d{2}.\d{3})\s+-->\s+((?:\d{2}:)?\d{2}:\d{2}.\d{3})/g,ld=/^WEBVTT(.|\n)*?\n{2}/,Nr=/<(?:(\d{2}):)?(\d{2}):(\d{2}).(\d{3})>/g,na=class{constructor(t){this.preambleText=null;this.preambleEmitted=!1;this.options=t}parse(t){t=t.replaceAll(`\r
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n=K(e.samples),a=n?n.timestamp+n.duration:0,s=r-a,o=le(s,e.timescale);if(o>0){let{sampleSize:c,silentValue:u}=be(e.info.decoderConfig.codec),d=o*e.info.numberOfChannels,l=new Uint8Array(c*d).fill(u),m=this.createSampleForTrack(e,new Uint8Array(l.buffer),a,s,"key");await this.registerSample(e,m)}}async addSubtitleCue(e,r,n){let a=await this.mutex.acquire();try{let s=this.getSubtitleTrackData(e,n);this.validateAndNormalizeTimestamp(s.track,r.timestamp,!0),e.source._codec==="webvtt"&&(s.cueQueue.push(r),await this.processWebVTTCues(s,r.timestamp))}finally{a()}}async processWebVTTCues(e,r){for(;e.cueQueue.length>0;){let n=new Set([]);for(let d of e.cueQueue)p(d.timestamp<=r),p(e.lastCueEndTimestamp<=d.timestamp+d.duration),n.add(Math.max(d.timestamp,e.lastCueEndTimestamp)),n.add(d.timestamp+d.duration);let a=[...n].sort((d,l)=>d-l),s=a[0],o=a[1]??s;if(r<o)break;if(e.lastCueEndTimestamp<s){this.auxWriter.seek(0);let d=Qc();this.auxBoxWriter.writeBox(d);let l=this.auxWriter.getSlice(0,this.auxWriter.getPos()),m=this.createSampleForTrack(e,l,e.lastCueEndTimestamp,s-e.lastCueEndTimestamp,"key");await this.registerSample(e,m),e.lastCueEndTimestamp=s}this.auxWriter.seek(0);for(let d=0;d<e.cueQueue.length;d++){let l=e.cueQueue[d];if(l.timestamp>=o)break;Nr.lastIndex=0;let m=Nr.test(l.text),f=l.timestamp+l.duration,g=e.cueToSourceId.get(l);if(g===void 0&&o<f&&(g=e.nextSourceId++,e.cueToSourceId.set(l,g)),l.notes){let h=Xc(l.notes);this.auxBoxWriter.writeBox(h)}let b=$c(l.text,m?s:null,l.identifier??null,l.settings??null,g??null);this.auxBoxWriter.writeBox(b),f===o&&e.cueQueue.splice(d--,1)}let c=this.auxWriter.getSlice(0,this.auxWriter.getPos()),u=this.createSampleForTrack(e,c,s,o-s,"key");await this.registerSample(e,u),e.lastCueEndTimestamp=o}}createSampleForTrack(e,r,n,a,s){return{timestamp:n,decodeTimestamp:n,duration:a,data:r,size:r.byteLength,type:s,timescaleUnitsToNextSample:le(a,e.timescale)}}processTimestamps(e,r){if(e.timestampProcessingQueue.length===0)return;if(e.type==="audio"&&e.info.requiresPcmTransformation){let a=0;for(let s=0;s<e.timestampProcessingQueue.length;s++){let o=e.timestampProcessingQueue[s],c=le(o.duration,e.timescale);a+=c}if(e.timeToSampleTable.length===0)e.timeToSampleTable.push({sampleCount:a,sampleDelta:1});else{let s=K(e.timeToSampleTable);s.sampleCount+=a}e.timestampProcessingQueue.length=0;return}let n=e.timestampProcessingQueue.map(a=>a.timestamp).sort((a,s)=>a-s);for(let a=0;a<e.timestampProcessingQueue.length;a++){let s=e.timestampProcessingQueue[a];s.decodeTimestamp=n[a],!this.isFragmented&&e.lastTimescaleUnits===null&&(s.decodeTimestamp=0);let o=le(s.timestamp-s.decodeTimestamp,e.timescale),c=le(s.duration,e.timescale);if(e.lastTimescaleUnits!==null){p(e.lastSample);let u=le(s.decodeTimestamp,e.timescale,!1),d=Math.round(u-e.lastTimescaleUnits);if(p(d>=0),e.lastTimescaleUnits+=d,e.lastSample.timescaleUnitsToNextSample=d,!this.isFragmented){let l=K(e.timeToSampleTable);if(p(l),l.sampleCount===1){l.sampleDelta=d;let f=e.timeToSampleTable[e.timeToSampleTable.length-2];f&&f.sampleDelta===d&&(f.sampleCount++,e.timeToSampleTable.pop(),l=f)}else l.sampleDelta!==d&&(l.sampleCount--,e.timeToSampleTable.push(l={sampleCount:1,sampleDelta:d}));l.sampleDelta===c?l.sampleCount++:e.timeToSampleTable.push({sampleCount:1,sampleDelta:c});let m=K(e.compositionTimeOffsetTable);p(m),m.sampleCompositionTimeOffset===o?m.sampleCount++:e.compositionTimeOffsetTable.push({sampleCount:1,sampleCompositionTimeOffset:o})}}else e.lastTimescaleUnits=le(s.decodeTimestamp,e.timescale,!1),this.isFragmented||(e.timeToSampleTable.push({sampleCount:1,sampleDelta:c}),e.compositionTimeOffsetTable.push({sampleCount:1,sampleCompositionTimeOffset:o}));e.lastSample=s}if(e.timestampProcessingQueue.length=0,p(e.lastSample),p(e.lastTimescaleUnits!==null),r!==void 0&&e.lastSample.timescaleUnitsToNextSample===0){p(r.type==="key");let a=le(r.timestamp,e.timescale,!1),s=Math.round(a-e.lastTimescaleUnits);e.lastSample.timescaleUnitsToNextSample=s}}async registerSample(e,r){r.type==="key"&&this.processTimestamps(e,r),e.timestampProcessingQueue.push(r),this.isFragmented?(e.sampleQueue.push(r),await this.interleaveSamples()):this.fastStart==="reserve"?await this.registerSampleFastStartReserve(e,r):await this.addSampleToTrack(e,r)}async addSampleToTrack(e,r){if(!this.isFragmented&&(e.samples.push(r),this.fastStart==="reserve")){let a=e.track.metadata.maximumPacketCount;if(p(a!==void 0),e.samples.length>a)throw new Error(`Track #${e.track.id} has already reached the maximum packet count (${a}). Either add less packets or increase the maximum packet count.`)}let n=!1;if(!e.currentChunk)n=!0;else{e.currentChunk.startTimestamp=Math.min(e.currentChunk.startTimestamp,r.timestamp);let a=r.timestamp-e.currentChunk.startTimestamp;if(this.isFragmented){let s=this.trackDatas.every(o=>{if(e===o)return r.type==="key";let c=o.sampleQueue[0];return c?c.type==="key":o.track.source._closed});a>=this.minimumFragmentDuration&&s&&r.timestamp>this.maxWrittenTimestamp&&(n=!0,await this.finalizeFragment())}else n=a>=.5}n&&(e.currentChunk&&await this.finalizeCurrentChunk(e),e.currentChunk={startTimestamp:r.timestamp,samples:[],offset:null,moofOffset:null}),p(e.currentChunk),e.currentChunk.samples.push(r),this.isFragmented&&(this.maxWrittenTimestamp=Math.max(this.maxWrittenTimestamp,r.timestamp))}async finalizeCurrentChunk(e){if(p(!this.isFragmented),!e.currentChunk)return;e.finalizedChunks.push(e.currentChunk),this.finalizedChunks.push(e.currentChunk);let r=e.currentChunk.samples.length;if(e.type==="audio"&&e.info.requiresPcmTransformation&&(r=e.currentChunk.samples.reduce((n,a)=>n+le(a.duration,e.timescale),0)),(e.compactlyCodedChunkTable.length===0||K(e.compactlyCodedChunkTable).samplesPerChunk!==r)&&e.compactlyCodedChunkTable.push({firstChunk:e.finalizedChunks.length,samplesPerChunk:r}),this.fastStart==="in-memory"){e.currentChunk.offset=0;return}e.currentChunk.offset=this.writer.getPos();for(let n of e.currentChunk.samples)p(n.data),this.writer.write(n.data),n.data=null;await this.writer.flush()}async interleaveSamples(e=!1){if(p(this.isFragmented),!(!e&&!this.allTracksAreKnown()))e:for(;;){let r=null,n=1/0;for(let s of this.trackDatas){if(!e&&s.sampleQueue.length===0&&!s.track.source._closed)break e;s.sampleQueue.length>0&&s.sampleQueue[0].timestamp<n&&(r=s,n=s.sampleQueue[0].timestamp)}if(!r)break;let a=r.sampleQueue.shift();await this.addSampleToTrack(r,a)}}async finalizeFragment(e=!0){p(this.isFragmented);let r=this.nextFragmentNumber++;if(r===1){this.format._options.onMoov&&this.writer.startTrackingWrites();let g=Lr(this);if(this.boxWriter.writeBox(g),this.format._options.onMoov){let{data:b,start:h}=this.writer.stopTrackingWrites();this.format._options.onMoov(b,h)}}let n=this.trackDatas.filter(g=>g.currentChunk),a=Bs(r,n),s=this.writer.getPos(),o=s+this.boxWriter.measureBox(a),c=o+Le,u=1/0;for(let g of n){g.currentChunk.offset=c,g.currentChunk.moofOffset=s;for(let b of g.currentChunk.samples)c+=b.size;u=Math.min(u,g.currentChunk.startTimestamp)}let d=c-o,l=d>=2**32;if(l)for(let g of n)g.currentChunk.offset+=kt-Le;this.format._options.onMoof&&this.writer.startTrackingWrites();let m=Bs(r,n);if(this.boxWriter.writeBox(m),this.format._options.onMoof){let{data:g,start:b}=this.writer.stopTrackingWrites();this.format._options.onMoof(g,b,u)}p(this.writer.getPos()===o),this.format._options.onMdat&&this.writer.startTrackingWrites();let f=Fi(l);f.size=d,this.boxWriter.writeBox(f),this.writer.seek(o+(l?kt:Le));for(let g of n)for(let b of g.currentChunk.samples)this.writer.write(b.data),b.data=null;if(this.format._options.onMdat){let{data:g,start:b}=this.writer.stopTrackingWrites();this.format._options.onMdat(g,b)}for(let g of n)g.finalizedChunks.push(g.currentChunk),this.finalizedChunks.push(g.currentChunk),g.currentChunk=null;e&&await this.writer.flush()}async registerSampleFastStartReserve(e,r){if(this.allTracksAreKnown()){if(!this.mdat){let n=Lr(this),s=this.boxWriter.measureBox(n)+this.computeSampleTableSizeUpperBound()+4096;p(this.ftypSize!==null),this.writer.seek(this.ftypSize+s),this.format._options.onMdat&&this.writer.startTrackingWrites(),this.mdat=Fi(!0),this.boxWriter.writeBox(this.mdat);for(let o of this.trackDatas){for(let c of o.sampleQueue)await this.addSampleToTrack(o,c);o.sampleQueue.length=0}}await this.addSampleToTrack(e,r)}else e.sampleQueue.push(r)}computeSampleTableSizeUpperBound(){p(this.fastStart==="reserve");let e=0;for(let r of this.trackDatas){let n=r.track.metadata.maximumPacketCount;p(n!==void 0),e+=8*Math.ceil(2/3*n),e+=4*n,e+=8*Math.ceil(2/3*n),e+=12*Math.ceil(2/3*n),e+=4*n,e+=8*n}return e}async onTrackClose(e){let r=await this.mutex.acquire();if(e.type==="subtitle"&&e.source._codec==="webvtt"){let n=this.trackDatas.find(a=>a.track===e);n&&await this.processWebVTTCues(n,1/0)}this.allTracksAreKnown()&&this.allTracksKnown.resolve(),this.isFragmented&&await this.interleaveSamples(),r()}async finalize(){let e=await this.mutex.acquire();this.allTracksKnown.resolve();for(let r of this.trackDatas)r.type==="subtitle"&&r.track.source._codec==="webvtt"&&await this.processWebVTTCues(r,1/0);if(this.isFragmented){await this.interleaveSamples(!0);for(let r of this.trackDatas)this.processTimestamps(r);await this.finalizeFragment(!1)}else for(let r of this.trackDatas)this.processTimestamps(r),await this.finalizeCurrentChunk(r);if(this.fastStart==="in-memory"){this.mdat=Fi(!1);let r;for(let a=0;a<2;a++){let s=Lr(this),o=this.boxWriter.measureBox(s);r=this.boxWriter.measureBox(this.mdat);let c=this.writer.getPos()+o+r;for(let u of this.finalizedChunks){u.offset=c;for(let{data:d}of u.samples)p(d),c+=d.byteLength,r+=d.byteLength}if(c<2**32)break;r>=2**32&&(this.mdat.largeSize=!0)}this.format._options.onMoov&&this.writer.startTrackingWrites();let n=Lr(this);if(this.boxWriter.writeBox(n),this.format._options.onMoov){let{data:a,start:s}=this.writer.stopTrackingWrites();this.format._options.onMoov(a,s)}this.format._options.onMdat&&this.writer.startTrackingWrites(),this.mdat.size=r,this.boxWriter.writeBox(this.mdat);for(let a of this.finalizedChunks)for(let s of a.samples)p(s.data),this.writer.write(s.data),s.data=null;if(this.format._options.onMdat){let{data:a,start:s}=this.writer.stopTrackingWrites();this.format._options.onMdat(a,s)}}else if(this.isFragmented){let r=this.writer.getPos(),n=Gc(this.trackDatas);this.boxWriter.writeBox(n);let a=this.writer.getPos()-r;this.writer.seek(this.writer.getPos()-4),this.boxWriter.writeU32(a)}else{p(this.mdat);let r=this.boxWriter.offsets.get(this.mdat);p(r!==void 0);let n=this.writer.getPos()-r;if(this.mdat.size=n,this.mdat.largeSize=n>=2**32,this.boxWriter.patchBox(this.mdat),this.format._options.onMdat){let{data:s,start:o}=this.writer.stopTrackingWrites();this.format._options.onMdat(s,o)}let a=Lr(this);if(this.fastStart==="reserve"){p(this.ftypSize!==null),this.writer.seek(this.ftypSize),this.format._options.onMoov&&this.writer.startTrackingWrites(),this.boxWriter.writeBox(a);let s=this.boxWriter.offsets.get(this.mdat)-this.writer.getPos();this.boxWriter.writeBox(jc(s))}else this.format._options.onMoov&&this.writer.startTrackingWrites(),this.boxWriter.writeBox(a);if(this.format._options.onMoov){let{data:s,start:o}=this.writer.stopTrackingWrites();this.format._options.onMoov(s,o)}}e()}};var yl=-(2**15),wl=2**15-1,ru="Mediabunny",iu=6,nu=5,Tl={video:1,audio:2,subtitle:17},ma=class extends ge{constructor(e,r){super(e);this.trackDatas=[];this.allTracksKnown=Y();this.segment=null;this.segmentInfo=null;this.seekHead=null;this.tracksElement=null;this.tagsElement=null;this.attachmentsElement=null;this.segmentDuration=null;this.cues=null;this.currentCluster=null;this.currentClusterStartMsTimestamp=null;this.currentClusterMaxMsTimestamp=null;this.trackDatasInCurrentCluster=new Map;this.duration=0;this.writer=e._writer,this.format=r,this.ebmlWriter=new Tn(this.writer),this.format._options.appendOnly&&(this.writer.ensureMonotonicity=!0)}async start(){let e=await this.mutex.acquire();this.writeEBMLHeader(),this.createSegmentInfo(),this.createCues(),await this.writer.flush(),e()}writeEBMLHeader(){this.format._options.onEbmlHeader&&this.writer.startTrackingWrites();let e={id:440786851,data:[{id:17030,data:1},{id:17143,data:1},{id:17138,data:4},{id:17139,data:8},{id:17026,data:this.format instanceof qr?"webm":"matroska"},{id:17031,data:2},{id:17029,data:2}]};if(this.ebmlWriter.writeEBML(e),this.format._options.onEbmlHeader){let{data:r,start:n}=this.writer.stopTrackingWrites();this.format._options.onEbmlHeader(r,n)}}maybeCreateSeekHead(e){if(this.format._options.appendOnly)return;let r=new Uint8Array([28,83,187,107]),n=new Uint8Array([21,73,169,102]),a=new Uint8Array([22,84,174,107]),s=new Uint8Array([25,65,164,105]),o=new Uint8Array([18,84,195,103]),c={id:290298740,data:[{id:19899,data:[{id:21419,data:r},{id:21420,size:5,data:e?this.ebmlWriter.offsets.get(this.cues)-this.segmentDataOffset:0}]},{id:19899,data:[{id:21419,data:n},{id:21420,size:5,data:e?this.ebmlWriter.offsets.get(this.segmentInfo)-this.segmentDataOffset:0}]},{id:19899,data:[{id:21419,data:a},{id:21420,size:5,data:e?this.ebmlWriter.offsets.get(this.tracksElement)-this.segmentDataOffset:0}]},this.attachmentsElement?{id:19899,data:[{id:21419,data:s},{id:21420,size:5,data:e?this.ebmlWriter.offsets.get(this.attachmentsElement)-this.segmentDataOffset:0}]}:null,this.tagsElement?{id:19899,data:[{id:21419,data:o},{id:21420,size:5,data:e?this.ebmlWriter.offsets.get(this.tagsElement)-this.segmentDataOffset:0}]}:null]};this.seekHead=c}createSegmentInfo(){let e={id:17545,data:new _r(0)};this.segmentDuration=e;let r={id:357149030,data:[{id:2807729,data:1e6},{id:19840,data:ru},{id:22337,data:ru},this.format._options.appendOnly?null:e]};this.segmentInfo=r}createTracks(){let e={id:374648427,data:[]};this.tracksElement=e;for(let r of this.trackDatas){let n=Ce[r.track.source._codec];p(n);let a=0;if(r.type==="audio"&&r.track.source._codec==="opus"){a=1e6*80;let s=r.info.decoderConfig.description;if(s){let o=H(s),c=Vt(o);a=Math.round(1e9*(c.preSkip/Ne))}}e.data.push({id:174,data:[{id:215,data:r.track.id},{id:29637,data:r.track.id},{id:131,data:Tl[r.type]},r.track.metadata.disposition?.default===!1?{id:136,data:0}:null,r.track.metadata.disposition?.forced?{id:21930,data:1}:null,r.track.metadata.disposition?.hearingImpaired?{id:21931,data:1}:null,r.track.metadata.disposition?.visuallyImpaired?{id:21932,data:1}:null,r.track.metadata.disposition?.original?{id:21934,data:1}:null,r.track.metadata.disposition?.commentary?{id:21935,data:1}:null,{id:156,data:0},{id:2274716,data:r.track.metadata.languageCode??ee},{id:134,data:n},{id:22186,data:0},{id:22203,data:a},r.track.metadata.name!==void 0?{id:21358,data:new He(r.track.metadata.name)}:null,r.type==="video"?this.videoSpecificTrackInfo(r):null,r.type==="audio"?this.audioSpecificTrackInfo(r):null,r.type==="subtitle"?this.subtitleSpecificTrackInfo(r):null]})}}videoSpecificTrackInfo(e){let{frameRate:r,rotation:n}=e.track.metadata,a=[e.info.decoderConfig.description?{id:25506,data:H(e.info.decoderConfig.description)}:null,r?{id:2352003,data:1e9/r}:null],s=n?_t(-n):0,o=e.info.decoderConfig.colorSpace,c={id:224,data:[{id:176,data:e.info.width},{id:186,data:e.info.height},e.info.alphaMode?{id:21440,data:1}:null,Hi(o)?{id:21936,data:[{id:21937,data:ct[o.matrix]},{id:21946,data:ot[o.transfer]},{id:21947,data:st[o.primaries]},{id:21945,data:o.fullRange?2:1}]}:null,s?{id:30320,data:[{id:30321,data:0},{id:30325,data:new Er((s+180)%360-180)}]}:null]};return a.push(c),a}audioSpecificTrackInfo(e){let r=Z.includes(e.track.source._codec)?be(e.track.source._codec):null;return[e.info.decoderConfig.description?{id:25506,data:H(e.info.decoderConfig.description)}:null,{id:225,data:[{id:181,data:new Er(e.info.sampleRate)},{id:159,data:e.info.numberOfChannels},r?{id:25188,data:8*r.sampleSize}:null]}]}subtitleSpecificTrackInfo(e){return[{id:25506,data:X.encode(e.info.config.description)}]}maybeCreateTags(){let e=[],r=(s,o)=>{e.push({id:26568,data:[{id:17827,data:new He(s)},typeof o=="string"?{id:17543,data:new He(o)}:{id:17541,data:o}]})},n=this.output._metadataTags,a=new Set;for(let{key:s,value:o}of ze(n))switch(s){case"title":r("TITLE",o),a.add("TITLE");break;case"description":r("DESCRIPTION",o),a.add("DESCRIPTION");break;case"artist":r("ARTIST",o),a.add("ARTIST");break;case"album":r("ALBUM",o),a.add("ALBUM");break;case"albumArtist":r("ALBUM_ARTIST",o),a.add("ALBUM_ARTIST");break;case"genre":r("GENRE",o),a.add("GENRE");break;case"comment":r("COMMENT",o),a.add("COMMENT");break;case"lyrics":r("LYRICS",o),a.add("LYRICS");break;case"date":r("DATE",o.toISOString().slice(0,10)),a.add("DATE");break;case"trackNumber":{let c=n.tracksTotal!==void 0?`${o}/${n.tracksTotal}`:o.toString();r("PART_NUMBER",c),a.add("PART_NUMBER")}break;case"discNumber":{let c=n.discsTotal!==void 0?`${o}/${n.discsTotal}`:o.toString();r("DISC",c),a.add("DISC")}break;case"tracksTotal":case"discsTotal":break;case"images":case"raw":break;default:J(s)}if(n.raw)for(let s in n.raw){let o=n.raw[s];o==null||a.has(s)||(typeof o=="string"||o instanceof Uint8Array)&&r(s,o)}e.length!==0&&(this.tagsElement={id:307544935,data:[{id:29555,data:[{id:25536,data:[{id:26826,data:50},{id:25546,data:"MOVIE"}]},...e]}]})}maybeCreateAttachments(){let e=this.output._metadataTags,r=[],n=new Set,a=e.images??[];for(let s of a){let o=s.name;o===void 0&&(o=(s.kind==="coverFront"?"cover":s.kind==="coverBack"?"back":"image")+(yo(s.mimeType)??""));let c;for(;;){c=0n;for(let u=0;u<8;u++)c<<=8n,c|=BigInt(Math.floor(Math.random()*256));if(c!==0n&&!n.has(c))break}n.add(c),r.push({id:24999,data:[s.description!==void 0?{id:18046,data:new He(s.description)}:null,{id:18030,data:new He(o)},{id:18016,data:s.mimeType},{id:18012,data:s.data},{id:18094,data:c}]})}for(let[s,o]of Object.entries(e.raw??{}))!(o instanceof Bt)||!/^\d+$/.test(s)||a.find(u=>u.mimeType===o.mimeType&&So(u.data,o.data))||r.push({id:24999,data:[o.description!==void 0?{id:18046,data:new He(o.description)}:null,{id:18030,data:new He(o.name??"")},{id:18016,data:o.mimeType??""},{id:18012,data:o.data},{id:18094,data:BigInt(s)}]});r.length!==0&&(this.attachmentsElement={id:423732329,data:r})}createSegment(){this.createTracks(),this.maybeCreateTags(),this.maybeCreateAttachments(),this.maybeCreateSeekHead(!1);let e={id:408125543,size:this.format._options.appendOnly?-1:iu,data:[this.seekHead,this.segmentInfo,this.tracksElement,this.attachmentsElement,this.tagsElement]};if(this.segment=e,this.format._options.onSegmentHeader&&this.writer.startTrackingWrites(),this.ebmlWriter.writeEBML(e),this.format._options.onSegmentHeader){let{data:r,start:n}=this.writer.stopTrackingWrites();this.format._options.onSegmentHeader(r,n)}}createCues(){this.cues={id:475249515,data:[]}}get segmentDataOffset(){return p(this.segment),this.ebmlWriter.dataOffsets.get(this.segment)}allTracksAreKnown(){for(let e of this.output._tracks)if(!e.source._closed&&!this.trackDatas.some(r=>r.track===e))return!1;return!0}async getMimeType(){await this.allTracksKnown.promise;let e=this.trackDatas.map(r=>r.type==="video"||r.type==="audio"?r.info.decoderConfig.codec:{webvtt:"wvtt"}[r.track.source._codec]);return Pn({isWebM:this.format instanceof qr,hasVideo:this.trackDatas.some(r=>r.type==="video"),hasAudio:this.trackDatas.some(r=>r.type==="audio"),codecStrings:e})}getVideoTrackData(e,r,n){let a=this.trackDatas.find(o=>o.track===e);if(a)return a;wr(n),p(n),p(n.decoderConfig),p(n.decoderConfig.codedWidth!==void 0),p(n.decoderConfig.codedHeight!==void 0);let s={track:e,type:"video",info:{width:n.decoderConfig.codedWidth,height:n.decoderConfig.codedHeight,decoderConfig:n.decoderConfig,alphaMode:!!r.sideData.alpha},chunkQueue:[],lastWrittenMsTimestamp:null};return e.source._codec==="vp9"?s.info.decoderConfig={...s.info.decoderConfig,description:new Uint8Array(Eo(s.info.decoderConfig.codec))}:e.source._codec==="av1"&&(s.info.decoderConfig={...s.info.decoderConfig,description:new Uint8Array(Gi(s.info.decoderConfig.codec))}),this.trackDatas.push(s),this.trackDatas.sort((o,c)=>o.track.id-c.track.id),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),s}getAudioTrackData(e,r,n){let a=this.trackDatas.find(u=>u.track===e);if(a)return a;Ae(n),p(n),p(n.decoderConfig);let s={...n.decoderConfig},o=!1;if(e.source._codec==="aac"&&!s.description){let u=ve(he.tempFromBytes(r.data));if(!u)throw new Error("Couldn't parse ADTS header from the AAC packet. Make sure the packets are in ADTS format (as specified in ISO 13818-7) when not providing a description, or provide a description (must be an AudioSpecificConfig as specified in ISO 14496-3) and ensure the packets are raw AAC data.");let d=Ue[u.samplingFrequencyIndex],l=Je[u.channelConfiguration];if(d===void 0||l===void 0)throw new Error("Invalid ADTS frame header.");s.description=yr({objectType:u.objectType,sampleRate:d,numberOfChannels:l}),o=!0}let c={track:e,type:"audio",info:{numberOfChannels:n.decoderConfig.numberOfChannels,sampleRate:n.decoderConfig.sampleRate,decoderConfig:s,requiresAdtsStripping:o},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(c),this.trackDatas.sort((u,d)=>u.track.id-d.track.id),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),c}getSubtitleTrackData(e,r){let n=this.trackDatas.find(s=>s.track===e);if(n)return n;Qi(r),p(r),p(r.config);let a={track:e,type:"subtitle",info:{config:r.config},chunkQueue:[],lastWrittenMsTimestamp:null};return this.trackDatas.push(a),this.trackDatas.sort((s,o)=>s.track.id-o.track.id),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),a}async addEncodedVideoPacket(e,r,n){let a=await this.mutex.acquire();try{let s=this.getVideoTrackData(e,r,n),o=r.type==="key",c=this.validateAndNormalizeTimestamp(s.track,r.timestamp,o),u=r.duration;e.metadata.frameRate!==void 0&&(c=Zr(c,1/e.metadata.frameRate),u=Zr(u,1/e.metadata.frameRate));let d=s.info.alphaMode?r.sideData.alpha??null:null,l=this.createInternalChunk(r.data,c,u,r.type,d);e.source._codec==="vp9"&&this.fixVP9ColorSpace(s,l),s.chunkQueue.push(l),await this.interleaveChunks()}finally{a()}}async addEncodedAudioPacket(e,r,n){let a=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,r,n),o=r.data;if(s.info.requiresAdtsStripping){let l=ve(he.tempFromBytes(o));if(!l)throw new Error("Expected ADTS frame, didn't get one.");let m=l.crcCheck===null?xt:Re;o=o.subarray(m)}let c=r.type==="key",u=this.validateAndNormalizeTimestamp(s.track,r.timestamp,c),d=this.createInternalChunk(o,u,r.duration,r.type);s.chunkQueue.push(d),await this.interleaveChunks()}finally{a()}}async addSubtitleCue(e,r,n){let a=await this.mutex.acquire();try{let s=this.getSubtitleTrackData(e,n),o=this.validateAndNormalizeTimestamp(s.track,r.timestamp,!0),c=r.text,u=Math.round(o*1e3);Nr.lastIndex=0,c=c.replace(Nr,f=>{let b=aa(f.slice(1,-1))-u;return`<${sa(b)}>`});let d=X.encode(c),l=`${r.settings??""}
${r.identifier??""}
${r.notes??""}`,m=this.createInternalChunk(d,o,r.duration,"key",l.trim()?X.encode(l):null);s.chunkQueue.push(m),await this.interleaveChunks()}finally{a()}}async interleaveChunks(e=!1){if(!(!e&&!this.allTracksAreKnown())){e:for(;;){let r=null,n=1/0;for(let s of this.trackDatas){if(!e&&s.chunkQueue.length===0&&!s.track.source._closed)break e;s.chunkQueue.length>0&&s.chunkQueue[0].timestamp<n&&(r=s,n=s.chunkQueue[0].timestamp)}if(!r)break;let a=r.chunkQueue.shift();this.writeBlock(r,a)}e||await this.writer.flush()}}fixVP9ColorSpace(e,r){if(r.type!=="key"||!e.info.decoderConfig.colorSpace||!e.info.decoderConfig.colorSpace.matrix)return;let n=new V(r.data);n.skipBits(2);let a=n.readBits(1),o=(n.readBits(1)<<1)+a;if(o===3&&n.skipBits(1),n.readBits(1)||n.readBits(1)!==0||(n.skipBits(2),n.readBits(24)!==4817730))return;o>=2&&n.skipBits(1);let l={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];uo(r.data,n.pos,n.pos+3,l)}createInternalChunk(e,r,n,a,s=null){return{data:e,type:a,timestamp:r,duration:n,additions:s}}writeBlock(e,r){this.segment||this.createSegment();let n=Math.round(1e3*r.timestamp),a=this.trackDatas.every(l=>{if(e===l)return r.type==="key";let m=l.chunkQueue[0];return m?m.type==="key":l.track.source._closed}),s=!1;if(!this.currentCluster)s=!0;else{p(this.currentClusterStartMsTimestamp!==null),p(this.currentClusterMaxMsTimestamp!==null);let l=n-this.currentClusterStartMsTimestamp;s=a&&n>this.currentClusterMaxMsTimestamp&&l>=1e3*(this.format._options.minimumClusterDuration??1)||l>wl}s&&this.createNewCluster(n);let o=n-this.currentClusterStartMsTimestamp;if(o<yl)return;let c=new Uint8Array(4),u=new DataView(c.buffer);u.setUint8(0,128|e.track.id),u.setInt16(1,o,!1);let d=Math.round(1e3*r.duration);if(r.additions){let l={id:160,data:[{id:161,data:[c,r.data]},r.type==="delta"?{id:251,data:new gi(e.lastWrittenMsTimestamp-n)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:238,data:1},{id:165,data:r.additions}]}]}:null,d>0?{id:155,data:d}:null]};this.ebmlWriter.writeEBML(l)}else{u.setUint8(3,+(r.type==="key")<<7);let l={id:163,data:[c,r.data]};this.ebmlWriter.writeEBML(l)}this.duration=Math.max(this.duration,n+d),e.lastWrittenMsTimestamp=n,this.trackDatasInCurrentCluster.has(e)||this.trackDatasInCurrentCluster.set(e,{firstMsTimestamp:n}),this.currentClusterMaxMsTimestamp=Math.max(this.currentClusterMaxMsTimestamp,n)}createNewCluster(e){this.currentCluster&&this.finalizeCurrentCluster(),this.format._options.onCluster&&this.writer.startTrackingWrites(),this.currentCluster={id:524531317,size:this.format._options.appendOnly?-1:nu,data:[{id:231,data:e}]},this.ebmlWriter.writeEBML(this.currentCluster),this.currentClusterStartMsTimestamp=e,this.currentClusterMaxMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){if(p(this.currentCluster),!this.format._options.appendOnly){let a=this.writer.getPos()-this.ebmlWriter.dataOffsets.get(this.currentCluster),s=this.writer.getPos();this.writer.seek(this.ebmlWriter.offsets.get(this.currentCluster)+4),this.ebmlWriter.writeVarInt(a,nu),this.writer.seek(s)}if(this.format._options.onCluster){p(this.currentClusterStartMsTimestamp!==null);let{data:a,start:s}=this.writer.stopTrackingWrites();this.format._options.onCluster(a,s,this.currentClusterStartMsTimestamp/1e3)}let e=this.ebmlWriter.offsets.get(this.currentCluster)-this.segmentDataOffset,r=new Map;for(let[a,{firstMsTimestamp:s}]of this.trackDatasInCurrentCluster)r.has(s)||r.set(s,[]),r.get(s).push(a);let n=[...r.entries()].sort((a,s)=>a[0]-s[0]);for(let[a,s]of n)p(this.cues),this.cues.data.push({id:187,data:[{id:179,data:a},...s.map(o=>({id:183,data:[{id:247,data:o.track.id},{id:241,data:e}]}))]})}async onTrackClose(){let e=await this.mutex.acquire();this.allTracksAreKnown()&&this.allTracksKnown.resolve(),await this.interleaveChunks(),e()}async finalize(){let e=await this.mutex.acquire();if(this.allTracksKnown.resolve(),this.segment||this.createSegment(),await this.interleaveChunks(!0),this.currentCluster&&this.finalizeCurrentCluster(),p(this.cues),this.ebmlWriter.writeEBML(this.cues),!this.format._options.appendOnly){let r=this.writer.getPos(),n=this.writer.getPos()-this.segmentDataOffset;this.writer.seek(this.ebmlWriter.offsets.get(this.segment)+4),this.ebmlWriter.writeVarInt(n,iu),this.segmentDuration.data=new _r(this.duration),this.writer.seek(this.ebmlWriter.offsets.get(this.segmentDuration)),this.ebmlWriter.writeEBML(this.segmentDuration),p(this.seekHead),this.writer.seek(this.ebmlWriter.offsets.get(this.seekHead)),this.maybeCreateSeekHead(!0),this.ebmlWriter.writeEBML(this.seekHead),this.writer.seek(r)}e()}};var fa=class{constructor(t){this.writer=t;this.helper=new Uint8Array(8);this.helperView=new DataView(this.helper.buffer)}writeU32(t){this.helperView.setUint32(0,t,!1),this.writer.write(this.helper.subarray(0,4))}writeXingFrame(t){let e=this.writer.getPos(),r=255,n=224|t.mpegVersionId<<3|t.layer<<1,a;t.mpegVersionId&2?a=t.mpegVersionId&1?0:1:a=1;let s=0,o=155,c=-1,u=a*16*4+t.layer*16;for(let h=0;h<16;h++){let y=$i[u+h];if(Xi(a,t.layer,1e3*y,t.sampleRate,s)>=o){c=h;break}}if(c===-1)throw new Error("No suitable bitrate found.");let d=c<<4|t.frequencyIndex<<2|s<<1,l=t.channel<<6|t.modeExtension<<4|t.copyright<<3|t.original<<2|t.emphasis;this.helper[0]=r,this.helper[1]=n,this.helper[2]=d,this.helper[3]=l,this.writer.write(this.helper.subarray(0,4));let m=Ot(t.mpegVersionId,t.channel);this.writer.seek(e+m),this.writeU32(Dt);let f=0;t.frameCount!==null&&(f|=1),t.fileSize!==null&&(f|=2),t.toc!==null&&(f|=4),this.writeU32(f),this.writeU32(t.frameCount??0),this.writeU32(t.fileSize??0),this.writer.write(t.toc??new Uint8Array(100));let g=$i[u+c],b=Xi(a,t.layer,1e3*g,t.sampleRate,s);this.writer.seek(e+b)}};var pa=class extends ge{constructor(e,r){super(e);this.xingFrameData=null;this.frameCount=0;this.framePositions=[];this.xingFramePos=null;this.format=r,this.writer=e._writer,this.mp3Writer=new fa(e._writer)}async start(){mt(this.output._metadataTags)||new Ht(this.writer).writeId3V2Tag(this.output._metadataTags)}async getMimeType(){return"audio/mpeg"}async addEncodedVideoPacket(){throw new Error("MP3 does not support video.")}async addEncodedAudioPacket(e,r){let n=await this.mutex.acquire();try{let a=this.format._options.xingHeader!==!1;if(!this.xingFrameData&&a){let s=D(r.data);if(s.byteLength<4)throw new Error("Invalid MP3 header in sample.");let o=s.getUint32(0,!1),c=Jt(o,null).header;if(!c)throw new Error("Invalid MP3 header in sample.");let u=Ot(c.mpegVersionId,c.channel);if(s.byteLength>=u+4){let d=s.getUint32(u,!1);if(d===Dt||d===Tr)return}this.xingFrameData={mpegVersionId:c.mpegVersionId,layer:c.layer,frequencyIndex:c.frequencyIndex,sampleRate:c.sampleRate,channel:c.channel,modeExtension:c.modeExtension,copyright:c.copyright,original:c.original,emphasis:c.emphasis,frameCount:null,fileSize:null,toc:null},this.xingFramePos=this.writer.getPos(),this.mp3Writer.writeXingFrame(this.xingFrameData),this.frameCount++}this.validateAndNormalizeTimestamp(e,r.timestamp,r.type==="key"),this.writer.write(r.data),this.frameCount++,await this.writer.flush(),a&&this.framePositions.push(this.writer.getPos())}finally{n()}}async addSubtitleCue(){throw new Error("MP3 does not support subtitles.")}async finalize(){if(!this.xingFrameData||this.xingFramePos===null)return;let e=await this.mutex.acquire(),r=this.writer.getPos();this.writer.seek(this.xingFramePos);let n=new Uint8Array(100);for(let a=0;a<100;a++){let s=Math.floor(this.framePositions.length*(a/100));p(s!==-1&&s<this.framePositions.length);let o=this.framePositions[s];n[a]=256*(o/r)}if(this.xingFrameData.frameCount=this.frameCount,this.xingFrameData.fileSize=r,this.xingFrameData.toc=n,this.format._options.onXingFrame&&this.writer.startTrackingWrites(),this.mp3Writer.writeXingFrame(this.xingFrameData),this.format._options.onXingFrame){let{data:a,start:s}=this.writer.stopTrackingWrites();this.format._options.onXingFrame(a,s)}this.writer.seek(r),e()}};var Sl=8192,ha=class extends ge{constructor(e,r){super(e);this.trackDatas=[];this.bosPagesWritten=!1;this.allTracksKnown=Y();this.pageBytes=new Uint8Array(Mn);this.pageView=new DataView(this.pageBytes.buffer);this.format=r,this.writer=e._writer,this.writer.ensureMonotonicity=!0}async start(){}async getMimeType(){return await this.allTracksKnown.promise,Fn({codecStrings:this.trackDatas.map(e=>e.codecInfo.codec)})}addEncodedVideoPacket(){throw new Error("Video tracks are not supported.")}getTrackData(e,r){let n=this.trackDatas.find(o=>o.track===e);if(n)return n;let a;do a=Math.floor(2**32*Math.random());while(this.trackDatas.some(o=>o.serialNumber===a));p(e.source._codec==="vorbis"||e.source._codec==="opus"),Ae(r),p(r),p(r.decoderConfig);let s={track:e,serialNumber:a,internalSampleRate:e.source._codec==="opus"?Ne:r.decoderConfig.sampleRate,codecInfo:{codec:e.source._codec,vorbisInfo:null,opusInfo:null},vorbisLastBlocksize:null,packetQueue:[],currentTimestampInSamples:0,pagesWritten:0,currentGranulePosition:0,currentLacingValues:[],currentPageData:[],currentPageSize:27,currentPageStartsWithFreshPacket:!0,currentPageStartTimestampInSamples:0};return this.queueHeaderPackets(s,r),this.trackDatas.push(s),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),s}queueHeaderPackets(e,r){if(p(r.decoderConfig),e.track.source._codec==="vorbis"){p(r.decoderConfig.description);let n=H(r.decoderConfig.description);if(n[0]!==2)throw new TypeError("First byte of Vorbis decoder description must be 2.");let a=1,s=()=>{let h=0;for(;;){let y=n[a++];if(y===void 0)throw new TypeError("Vorbis decoder description is too short.");if(h+=y,y<255)return h}},o=s(),c=s();if(n.length-a<=0)throw new TypeError("Vorbis decoder description is too short.");let d=n.subarray(a,a+=o);a+=c;let l=n.subarray(a),m=new Uint8Array(7);m[0]=3,m[1]=118,m[2]=111,m[3]=114,m[4]=98,m[5]=105,m[6]=115;let f=ni(m,this.output._metadataTags,!0);e.packetQueue.push({data:d,timestampInSamples:0,durationInSamples:0,forcePageFlush:!0},{data:f,timestampInSamples:0,durationInSamples:0,forcePageFlush:!1},{data:l,timestampInSamples:0,durationInSamples:0,forcePageFlush:!0});let b=D(d).getUint8(28);e.codecInfo.vorbisInfo={blocksizes:[1<<(b&15),1<<(b>>4)],modeBlockflags:an(l).modeBlockflags}}else if(e.track.source._codec==="opus"){if(!r.decoderConfig.description)throw new TypeError("For Ogg, Opus decoder description is required.");let n=H(r.decoderConfig.description),a=new Uint8Array(8),s=D(a);s.setUint32(0,1332770163,!1),s.setUint32(4,1415669619,!1);let o=ni(a,this.output._metadataTags,!0);e.packetQueue.push({data:n,timestampInSamples:0,durationInSamples:0,forcePageFlush:!0},{data:o,timestampInSamples:0,durationInSamples:0,forcePageFlush:!0}),e.codecInfo.opusInfo={preSkip:Vt(n).preSkip}}}async addEncodedAudioPacket(e,r,n){let a=await this.mutex.acquire();try{let s=this.getTrackData(e,n);this.validateAndNormalizeTimestamp(s.track,r.timestamp,r.type==="key");let o=s.currentTimestampInSamples,{durationInSamples:c,vorbisBlockSize:u}=_n(r.data,s.codecInfo,s.vorbisLastBlocksize);s.currentTimestampInSamples+=c,s.vorbisLastBlocksize=u,s.packetQueue.push({data:r.data,timestampInSamples:o,durationInSamples:c,forcePageFlush:!1}),await this.interleavePages()}finally{a()}}addSubtitleCue(){throw new Error("Subtitle tracks are not supported.")}allTracksAreKnown(){for(let e of this.output._tracks)if(!e.source._closed&&!this.trackDatas.some(r=>r.track===e))return!1;return!0}async interleavePages(e=!1){if(!this.bosPagesWritten){if(!this.allTracksAreKnown()&&!e)return;for(let r of this.trackDatas)for(;r.packetQueue.length>0;){let n=r.packetQueue.shift();if(this.writePacket(r,n,!1),n.forcePageFlush)break}this.bosPagesWritten=!0}e:for(;;){let r=null,n=1/0;for(let o of this.trackDatas){if(!e&&o.packetQueue.length<=1&&!o.track.source._closed)break e;o.packetQueue.length>0&&o.packetQueue[0].timestampInSamples<n&&(r=o,n=o.packetQueue[0].timestampInSamples)}if(!r)break;let a=r.packetQueue.shift(),s=r.packetQueue.length===0;this.writePacket(r,a,s)}e||await this.writer.flush()}writePacket(e,r,n){let a=r.timestampInSamples+r.durationInSamples;if(this.format._options.maximumPageDuration!==void 0){let d=this.format._options.maximumPageDuration*e.internalSampleRate;e.currentLacingValues.length>0&&a-e.currentPageStartTimestampInSamples>d&&this.writePage(e,!1)}let s=r.data.length,o=0,c=0;for(;;){e.currentLacingValues.length===0&&o>0&&(e.currentPageStartsWithFreshPacket=!1);let d=Math.min(255,s);e.currentLacingValues.push(d),e.currentPageSize++,c+=d;let l=s<255;if(e.currentLacingValues.length===255){let m=r.data.subarray(o,c);if(o=c,e.currentPageData.push(m),e.currentPageSize+=m.length,this.writePage(e,n&&l),l)return}if(l)break;s-=255}let u=r.data.subarray(o);e.currentPageData.push(u),e.currentPageSize+=u.length,e.currentGranulePosition=a,(e.currentPageSize>=Sl||r.forcePageFlush)&&this.writePage(e,n)}writePage(e,r){this.pageView.setUint32(0,wi,!0),this.pageView.setUint8(4,0);let n=0;e.currentPageStartsWithFreshPacket||(n|=1),e.pagesWritten===0&&(n|=2),r&&(n|=4),this.pageView.setUint8(5,n);let a=e.currentLacingValues.every(u=>u===255)?-1:e.currentGranulePosition;ho(this.pageView,6,a,!0),this.pageView.setUint32(14,e.serialNumber,!0),this.pageView.setUint32(18,e.pagesWritten,!0),this.pageView.setUint32(22,0,!0),this.pageView.setUint8(26,e.currentLacingValues.length),this.pageBytes.set(e.currentLacingValues,27);let s=27+e.currentLacingValues.length;for(let u of e.currentPageData)this.pageBytes.set(u,s),s+=u.length;let o=this.pageBytes.subarray(0,s),c=En(o);if(this.pageView.setUint32(22,c,!0),e.pagesWritten++,e.currentLacingValues.length=0,e.currentPageData.length=0,e.currentPageSize=27,e.currentPageStartsWithFreshPacket=!0,e.currentPageStartTimestampInSamples=e.currentGranulePosition,this.format._options.onPage&&this.writer.startTrackingWrites(),this.writer.write(o),this.format._options.onPage){let{data:u,start:d}=this.writer.stopTrackingWrites();this.format._options.onPage(u,d,e.track.source)}}async onTrackClose(){let e=await this.mutex.acquire();this.allTracksAreKnown()&&this.allTracksKnown.resolve(),await this.interleavePages(),e()}async finalize(){let e=await this.mutex.acquire();this.allTracksKnown.resolve(),await this.interleavePages(!0);for(let r of this.trackDatas)r.currentLacingValues.length>0&&this.writePage(r,!0);e()}};var xl=0,uu=4096,au=256,Cl=224,su=192,ou=new Uint8Array([9,240]),cu=new Uint8Array([70,1]),ga=class extends ge{constructor(e,r){super(e);this.trackDatas=[];this.tablesWritten=!1;this.continuityCounters=new Map;this.packetBuffer=new Uint8Array(188);this.packetView=D(this.packetBuffer);this.allTracksKnown=Y();this.videoTrackIndex=0;this.audioTrackIndex=0;this.pesHeaderBuffer=new Uint8Array(14);this.pesHeaderView=D(this.pesHeaderBuffer);this.ptsBitstream=new V(this.pesHeaderBuffer.subarray(9,14));this.adaptationFieldBuffer=new Uint8Array(184);this.payloadBuffer=new Uint8Array(184);this.format=r,this.writer=e._writer,this.writer.ensureMonotonicity=!0}async start(){}async getMimeType(){return await this.allTracksKnown.promise,Nn(this.trackDatas.map(e=>e.codecString))}getVideoTrackData(e,r){let n=this.trackDatas.find(d=>d.track===e);if(n)return n;wr(r),p(r?.decoderConfig);let a=e.source._codec;p(a==="avc"||a==="hevc");let s=a==="avc"?27:36,o=au+this.trackDatas.length,c=Cl+this.videoTrackIndex++,u={track:e,pid:o,streamType:s,streamId:c,codecString:r.decoderConfig.codec,packetQueue:[],inputIsAnnexB:null,inputIsAdts:null,avcDecoderConfig:null,hevcDecoderConfig:null,adtsHeader:null,adtsHeaderBitstream:null,firstPacketWritten:!1};return this.trackDatas.push(u),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),u}getAudioTrackData(e,r){let n=this.trackDatas.find(d=>d.track===e);if(n)return n;Ae(r),p(r?.decoderConfig);let a=e.source._codec;p(a==="aac"||a==="mp3"||a==="ac3"||a==="eac3");let s,o;switch(a){case"aac":s=15,o=su+this.audioTrackIndex++;break;case"mp3":s=3,o=su+this.audioTrackIndex++;break;case"ac3":s=129,o=189;break;case"eac3":s=135,o=189;break}let c=au+this.trackDatas.length,u={track:e,pid:c,streamType:s,streamId:o,codecString:r.decoderConfig.codec,packetQueue:[],inputIsAnnexB:null,inputIsAdts:null,avcDecoderConfig:null,hevcDecoderConfig:null,adtsHeader:null,adtsHeaderBitstream:null,firstPacketWritten:!1};return this.trackDatas.push(u),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),u}async addEncodedVideoPacket(e,r,n){let a=await this.mutex.acquire();try{let s=this.getVideoTrackData(e,n),o=this.validateAndNormalizeTimestamp(s.track,r.timestamp,r.type==="key"),c=this.prepareVideoPacket(s,r,n);s.packetQueue.push({data:c,timestamp:o,isKeyframe:r.type==="key"}),await this.interleavePackets()}finally{a()}}async addEncodedAudioPacket(e,r,n){let a=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,n),o=this.validateAndNormalizeTimestamp(s.track,r.timestamp,r.type==="key"),c=this.prepareAudioPacket(s,r,n);s.packetQueue.push({data:c,timestamp:o,isKeyframe:r.type==="key"}),await this.interleavePackets()}finally{a()}}async addSubtitleCue(){throw new Error("MPEG-TS does not support subtitles.")}prepareVideoPacket(e,r,n){let a=e.track.source._codec;if(e.inputIsAnnexB===null){let s=n?.decoderConfig?.description;if(e.inputIsAnnexB=!s,!e.inputIsAnnexB){let o=H(s);a==="avc"?e.avcDecoderConfig=tn(o):e.hevcDecoderConfig=No(o)}}return e.inputIsAnnexB?this.prepareAnnexBVideoPacket(r.data,a):this.prepareLengthPrefixedVideoPacket(e,r,a)}prepareAnnexBVideoPacket(e,r){let n=[];for(let s of Ut(e)){let o=e.subarray(s.offset,s.offset+s.length);(r==="avc"?gt(o[0])===9:et(o[0])===35)||n.push(o)}let a=r==="avc"?ou:cu;return n.unshift(a),en(n)}prepareLengthPrefixedVideoPacket(e,r,n){let a=r.data,s=n==="avc"?e.avcDecoderConfig.lengthSizeMinusOne+1:e.hevcDecoderConfig.lengthSizeMinusOne+1,o=[];for(let u of Zi(a,s)){let d=a.subarray(u.offset,u.offset+u.length);(n==="avc"?gt(d[0])===9:et(d[0])===35)||o.push(d)}if(r.type==="key")if(n==="avc"){let u=e.avcDecoderConfig;for(let d of u.pictureParameterSets)o.unshift(d);for(let d of u.sequenceParameterSets)o.unshift(d)}else{let u=e.hevcDecoderConfig;for(let d of u.arrays)if(d.nalUnitType===34)for(let l of d.nalUnits)o.unshift(l);for(let d of u.arrays)if(d.nalUnitType===33)for(let l of d.nalUnits)o.unshift(l);for(let d of u.arrays)if(d.nalUnitType===32)for(let l of d.nalUnits)o.unshift(l)}let c=n==="avc"?ou:cu;return o.unshift(c),en(o)}prepareAudioPacket(e,r,n){let a=e.track.source._codec;if(a==="mp3"||a==="ac3"||a==="eac3")return r.data;if(e.inputIsAdts===null){let u=n?.decoderConfig?.description;if(e.inputIsAdts=!u,!e.inputIsAdts){let d=ht(H(u)),l=ea(d);e.adtsHeader=l.header,e.adtsHeaderBitstream=l.bitstream}}if(e.inputIsAdts)return r.data;p(e.adtsHeader),p(e.adtsHeaderBitstream);let s=e.adtsHeader,o=r.data.byteLength+s.byteLength;ta(e.adtsHeaderBitstream,o);let c=new Uint8Array(o);return c.set(s,0),c.set(r.data,s.byteLength),c}allTracksAreKnown(){for(let e of this.output._tracks)if(!e.source._closed&&!this.trackDatas.some(r=>r.track===e))return!1;return!0}async interleavePackets(e=!1){if(!this.tablesWritten){if(!this.allTracksAreKnown()&&!e)return;this.writeTables()}e:for(;;){let r=null,n=1/0;for(let s of this.trackDatas){if(!e&&s.packetQueue.length===0&&!s.track.source._closed)break e;s.packetQueue.length>0&&s.packetQueue[0].timestamp<n&&(r=s,n=s.packetQueue[0].timestamp)}if(!r)break;let a=r.packetQueue.shift();this.writePesPacket(r,a)}e||await this.writer.flush()}writeTables(){p(!this.tablesWritten),this.writePsiSection(xl,fr),this.writePsiSection(uu,Al(this.trackDatas)),this.tablesWritten=!0}writePsiSection(e,r){let n=0,a=!0;for(;n<r.length;){let o=184-(a?1:0),c=r.length-n,u=Math.min(o,c),d;a?(d=this.payloadBuffer.subarray(0,1+u),d[0]=0,d.set(r.subarray(n,n+u),1)):d=r.subarray(n,n+u),this.writeTsPacket(e,a,null,d),n+=u,a=!1}}writePesPacket(e,r){let n=this.pesHeaderView;Yt(n,0,1,!1),this.pesHeaderBuffer[3]=e.streamId;let a=e.track.type==="video"?0:Math.min(8+r.data.length,65535);n.setUint16(4,a,!1),n.setUint8(6,132),n.setUint8(7,128),n.setUint8(8,5);let s=Math.round(r.timestamp*9e4);this.ptsBitstream.pos=0,this.ptsBitstream.writeBits(4,2),this.ptsBitstream.writeBits(3,s>>>30&7),this.ptsBitstream.writeBits(1,1),this.ptsBitstream.writeBits(15,s>>>15&32767),this.ptsBitstream.writeBits(1,1),this.ptsBitstream.writeBits(15,s&32767),this.ptsBitstream.writeBits(1,1);let o=this.pesHeaderBuffer.length+r.data.length,c=0,u=!0;for(;c<o;){let d=u,l=o-c,m=u&&r.isKeyframe,f=u&&!e.firstPacketWritten,g=Math.max(0,184-l),b;m||f?b=Math.max(2,g):b=g;let h=null;if(b>0){let x=this.adaptationFieldBuffer;b===1?x[0]=0:(x[0]=b-1,x[1]=Number(f)<<7|Number(m)<<6,x.fill(255,2,b)),h=x.subarray(0,b)}let y=Math.min(184-b,l),k=this.payloadBuffer.subarray(0,y),w=0;if(c<this.pesHeaderBuffer.length){let x=Math.min(this.pesHeaderBuffer.length-c,y);k.set(this.pesHeaderBuffer.subarray(c,c+x),0),w=x}let S=Math.max(0,c-this.pesHeaderBuffer.length),T=S+(y-w);w<y&&k.set(r.data.subarray(S,T),w),this.writeTsPacket(e.pid,d,h,k),c+=y,u=!1}e.firstPacketWritten=!0}writeTsPacket(e,r,n,a){let s=this.continuityCounters.get(e)??0,o=a.length>0,c=n?o?3:2:o?1:0;this.packetBuffer[0]=71,this.packetView.setUint16(1,(r?16384:0)|e&8191,!1),this.packetBuffer[3]=c<<4|s&15,o&&this.continuityCounters.set(e,s+1&15);let u=4;n&&(this.packetBuffer.set(n,u),u+=n.length),this.packetBuffer.set(a,u),u+=a.length,u<188&&this.packetBuffer.fill(255,u);let d=this.writer.getPos();this.writer.write(this.packetBuffer),this.format._options.onPacket&&this.format._options.onPacket(this.packetBuffer.slice(),d)}async onTrackClose(){let e=await this.mutex.acquire();this.allTracksAreKnown()&&this.allTracksKnown.resolve(),await this.interleavePackets(),e()}async finalize(){let e=await this.mutex.acquire();this.allTracksKnown.resolve(),await this.interleavePackets(!0),e()}},Pl=79764919,du=new Uint32Array(256);for(let i=0;i<256;i++){let t=i<<24;for(let e=0;e<8;e++)t=t&2147483648?t<<1^Pl:t<<1;du[i]=t>>>0&4294967295}var lu=i=>{let t=4294967295;for(let e=0;e<i.length;e++){let r=i[e];t=(t<<8^du[t>>>24^r])>>>0}return t},fr=new Uint8Array(16);{let i=D(fr);fr[0]=0,i.setUint16(1,45069,!1),i.setUint16(3,1,!1),fr[5]=193,fr[6]=0,fr[7]=0,i.setUint16(8,1,!1),i.setUint16(10,57344|uu&8191,!1),i.setUint32(12,lu(fr.subarray(0,12)),!1)}var Al=i=>{let t=0;for(let c of i)t+=5,c.streamType===129?t+=si.length:c.streamType===135&&(t+=oi.length);let e=9+t+4,r=new Uint8Array(3+e-4),n=D(r);r[0]=2,n.setUint16(1,45056|e&4095,!1),n.setUint16(3,1,!1),r[5]=193,r[6]=0,r[7]=0,n.setUint16(8,65535,!1),n.setUint16(10,61440,!1);let a=12;for(let c of i)r[a++]=c.streamType,n.setUint16(a,57344|c.pid&8191,!1),a+=2,c.streamType===129?(n.setUint16(a,61440|si.length,!1),a+=2,r.set(si,a),a+=si.length):c.streamType===135?(n.setUint16(a,61440|oi.length,!1),a+=2,r.set(oi,a),a+=oi.length):(n.setUint16(a,61440,!1),a+=2);let s=lu(r),o=new Uint8Array(r.length+4);return o.set(r,0),D(o).setUint32(r.length,s,!1),o};var ba=class{constructor(t){this.writer=t;this.helper=new Uint8Array(8);this.helperView=new DataView(this.helper.buffer)}writeU16(t){this.helperView.setUint16(0,t,!0),this.writer.write(this.helper.subarray(0,2))}writeU32(t){this.helperView.setUint32(0,t,!0),this.writer.write(this.helper.subarray(0,4))}writeU64(t){this.helperView.setUint32(0,t,!0),this.helperView.setUint32(4,Math.floor(t/2**32),!0),this.writer.write(this.helper)}writeAscii(t){this.writer.write(new TextEncoder().encode(t))}};var ka=class extends ge{constructor(e,r){super(e);this.headerWritten=!1;this.dataSize=0;this.sampleRate=null;this.sampleCount=0;this.riffSizePos=null;this.dataSizePos=null;this.ds64RiffSizePos=null;this.ds64DataSizePos=null;this.ds64SampleCountPos=null;this.format=r,this.writer=e._writer,this.riffWriter=new ba(e._writer),this.isRf64=!!r._options.large}async start(){}async getMimeType(){return"audio/wav"}async addEncodedVideoPacket(){throw new Error("WAVE does not support video.")}async addEncodedAudioPacket(e,r,n){let a=await this.mutex.acquire();try{if(this.headerWritten||(Ae(n),p(n),p(n.decoderConfig),this.writeHeader(e,n.decoderConfig),this.sampleRate=n.decoderConfig.sampleRate,this.headerWritten=!0),this.validateAndNormalizeTimestamp(e,r.timestamp,r.type==="key"),!this.isRf64&&this.writer.getPos()+r.data.byteLength>=2**32)throw new Error("Adding more audio data would exceed the maximum RIFF size of 4 GiB. To write larger files, use RF64 by setting `large: true` in the WavOutputFormatOptions.");this.writer.write(r.data),this.dataSize+=r.data.byteLength,this.sampleCount+=Math.round(r.duration*this.sampleRate),await this.writer.flush()}finally{a()}}async addSubtitleCue(){throw new Error("WAVE does not support subtitles.")}writeHeader(e,r){this.format._options.onHeader&&this.writer.startTrackingWrites();let n,a=e.source._codec,s=be(a);s.dataType==="ulaw"?n=7:s.dataType==="alaw"?n=6:s.dataType==="float"?n=3:n=1;let o=r.numberOfChannels,c=r.sampleRate,u=s.sampleSize*o;if(this.riffWriter.writeAscii(this.isRf64?"RF64":"RIFF"),this.isRf64?this.riffWriter.writeU32(4294967295):(this.riffSizePos=this.writer.getPos(),this.riffWriter.writeU32(0)),this.riffWriter.writeAscii("WAVE"),this.isRf64&&(this.riffWriter.writeAscii("ds64"),this.riffWriter.writeU32(28),this.ds64RiffSizePos=this.writer.getPos(),this.riffWriter.writeU64(0),this.ds64DataSizePos=this.writer.getPos(),this.riffWriter.writeU64(0),this.ds64SampleCountPos=this.writer.getPos(),this.riffWriter.writeU64(0),this.riffWriter.writeU32(0)),this.riffWriter.writeAscii("fmt "),this.riffWriter.writeU32(16),this.riffWriter.writeU16(n),this.riffWriter.writeU16(o),this.riffWriter.writeU32(c),this.riffWriter.writeU32(c*u),this.riffWriter.writeU16(u),this.riffWriter.writeU16(8*s.sampleSize),!mt(this.output._metadataTags)){let d=this.format._options.metadataFormat??"info";d==="info"?this.writeInfoChunk(this.output._metadataTags):d==="id3"?this.writeId3Chunk(this.output._metadataTags):J(d)}if(this.riffWriter.writeAscii("data"),this.isRf64?this.riffWriter.writeU32(4294967295):(this.dataSizePos=this.writer.getPos(),this.riffWriter.writeU32(0)),this.format._options.onHeader){let{data:d,start:l}=this.writer.stopTrackingWrites();this.format._options.onHeader(d,l)}}writeInfoChunk(e){let r=this.writer.getPos();this.riffWriter.writeAscii("LIST"),this.riffWriter.writeU32(0),this.riffWriter.writeAscii("INFO");let n=new Set,a=(c,u)=>{if(!Ft(u)){console.warn(`Didn't write tag '${c}' because '${u}' is not ISO 8859-1-compatible.`);return}let d=u.length+1,l=new Uint8Array(d);for(let m=0;m<u.length;m++)l[m]=u.charCodeAt(m);this.riffWriter.writeAscii(c),this.riffWriter.writeU32(d),this.writer.write(l),d&1&&this.writer.write(new Uint8Array(1)),n.add(c)};for(let{key:c,value:u}of ze(e))switch(c){case"title":a("INAM",u),n.add("INAM");break;case"artist":a("IART",u),n.add("IART");break;case"album":a("IPRD",u),n.add("IPRD");break;case"trackNumber":{let d=e.tracksTotal!==void 0?`${u}/${e.tracksTotal}`:u.toString();a("ITRK",d),n.add("ITRK")}break;case"genre":a("IGNR",u),n.add("IGNR");break;case"date":a("ICRD",u.toISOString().slice(0,10)),n.add("ICRD");break;case"comment":a("ICMT",u),n.add("ICMT");break;case"albumArtist":case"discNumber":case"tracksTotal":case"discsTotal":case"description":case"lyrics":case"images":break;case"raw":break;default:J(c)}if(e.raw)for(let c in e.raw){let u=e.raw[c];u==null||c.length!==4||n.has(c)||typeof u=="string"&&a(c,u)}let s=this.writer.getPos(),o=s-r-8;this.writer.seek(r+4),this.riffWriter.writeU32(o),this.writer.seek(s),o&1&&this.writer.write(new Uint8Array(1))}writeId3Chunk(e){let r=this.writer.getPos();this.riffWriter.writeAscii("ID3 "),this.riffWriter.writeU32(0);let a=new Ht(this.writer).writeId3V2Tag(e),s=this.writer.getPos();this.writer.seek(r+4),this.riffWriter.writeU32(a),this.writer.seek(s),a&1&&this.writer.write(new Uint8Array(1))}async finalize(){let e=await this.mutex.acquire(),r=this.writer.getPos();this.isRf64?(p(this.ds64RiffSizePos!==null),this.writer.seek(this.ds64RiffSizePos),this.riffWriter.writeU64(r-8),p(this.ds64DataSizePos!==null),this.writer.seek(this.ds64DataSizePos),this.riffWriter.writeU64(this.dataSize),p(this.ds64SampleCountPos!==null),this.writer.seek(this.ds64SampleCountPos),this.riffWriter.writeU64(this.sampleCount)):(p(this.riffSizePos!==null),this.writer.seek(this.riffSizePos),this.riffWriter.writeU32(r-8),p(this.dataSizePos!==null),this.writer.seek(this.dataSizePos),this.riffWriter.writeU32(this.dataSize)),this.writer.seek(r),e()}};var De=class{getSupportedVideoCodecs(){return this.getSupportedCodecs().filter(t=>ce.includes(t))}getSupportedAudioCodecs(){return this.getSupportedCodecs().filter(t=>ue.includes(t))}getSupportedSubtitleCodecs(){return this.getSupportedCodecs().filter(t=>_e.includes(t))}_codecUnsupportedHint(t){return""}},Di=class extends De{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.fastStart!==void 0&&![!1,"in-memory","reserve","fragmented"].includes(t.fastStart))throw new TypeError("options.fastStart, when provided, must be false, 'in-memory', 'reserve', or 'fragmented'.");if(t.minimumFragmentDuration!==void 0&&(!Number.isFinite(t.minimumFragmentDuration)||t.minimumFragmentDuration<0))throw new TypeError("options.minimumFragmentDuration, when provided, must be a non-negative number.");if(t.onFtyp!==void 0&&typeof t.onFtyp!="function")throw new TypeError("options.onFtyp, when provided, must be a function.");if(t.onMoov!==void 0&&typeof t.onMoov!="function")throw new TypeError("options.onMoov, when provided, must be a function.");if(t.onMdat!==void 0&&typeof t.onMdat!="function")throw new TypeError("options.onMdat, when provided, must be a function.");if(t.onMoof!==void 0&&typeof t.onMoof!="function")throw new TypeError("options.onMoof, when provided, must be a function.");if(t.metadataFormat!==void 0&&!["mdir","mdta","udta","auto"].includes(t.metadataFormat))throw new TypeError("options.metadataFormat, when provided, must be either 'auto', 'mdir', 'mdta', or 'udta'.");super(),this._options=t}getSupportedTrackCounts(){return{video:{min:0,max:4294967295},audio:{min:0,max:4294967295},subtitle:{min:0,max:4294967295},total:{min:1,max:4294967295}}}get supportsVideoRotationMetadata(){return!0}get supportsTimestampedMediaData(){return!0}_createMuxer(t){return new la(t,this)}},jr=class extends Di{constructor(t){super(t)}get _name(){return"MP4"}get fileExtension(){return".mp4"}get mimeType(){return"video/mp4"}getSupportedCodecs(){return[...ce,...pt,"pcm-s16","pcm-s16be","pcm-s24","pcm-s24be","pcm-s32","pcm-s32be","pcm-f32","pcm-f32be","pcm-f64","pcm-f64be",..._e]}_codecUnsupportedHint(t){return new Hr().getSupportedCodecs().includes(t)?" Switching to MOV will grant support for this codec.":""}},Hr=class extends Di{constructor(t){super(t)}get _name(){return"MOV"}get fileExtension(){return".mov"}get mimeType(){return"video/quicktime"}getSupportedCodecs(){return[...ce,...ue]}_codecUnsupportedHint(t){return new jr().getSupportedCodecs().includes(t)?" Switching to MP4 will grant support for this codec.":""}},Oi=class extends De{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.appendOnly!==void 0&&typeof t.appendOnly!="boolean")throw new TypeError("options.appendOnly, when provided, must be a boolean.");if(t.minimumClusterDuration!==void 0&&(!Number.isFinite(t.minimumClusterDuration)||t.minimumClusterDuration<0))throw new TypeError("options.minimumClusterDuration, when provided, must be a non-negative number.");if(t.onEbmlHeader!==void 0&&typeof t.onEbmlHeader!="function")throw new TypeError("options.onEbmlHeader, when provided, must be a function.");if(t.onSegmentHeader!==void 0&&typeof t.onSegmentHeader!="function")throw new TypeError("options.onHeader, when provided, must be a function.");if(t.onCluster!==void 0&&typeof t.onCluster!="function")throw new TypeError("options.onCluster, when provided, must be a function.");super(),this._options=t}_createMuxer(t){return new ma(t,this)}get _name(){return"Matroska"}getSupportedTrackCounts(){return{video:{min:0,max:127},audio:{min:0,max:127},subtitle:{min:0,max:127},total:{min:1,max:127}}}get fileExtension(){return".mkv"}get mimeType(){return"video/x-matroska"}getSupportedCodecs(){return[...ce,...pt,...Z.filter(t=>!["pcm-s8","pcm-f32be","pcm-f64be","ulaw","alaw"].includes(t)),..._e]}get supportsVideoRotationMetadata(){return!1}get supportsTimestampedMediaData(){return!0}},qr=class extends Oi{constructor(t){super(t)}getSupportedCodecs(){return[...ce.filter(t=>["vp8","vp9","av1"].includes(t)),...ue.filter(t=>["opus","vorbis"].includes(t)),..._e]}get _name(){return"WebM"}get fileExtension(){return".webm"}get mimeType(){return"video/webm"}_codecUnsupportedHint(t){return new Oi().getSupportedCodecs().includes(t)?" 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			in vec2 a_texCoord;
			out vec2 v_texCoord;
			
			void main() {
				gl_Position = vec4(a_position, 0.0, 1.0);
				v_texCoord = a_texCoord;
			}
		`)}createColorProgram(){let t=this.createVertexShader(),e=this.createShader(this.gl.FRAGMENT_SHADER,`#version 300 es
			precision highp float;
			
			uniform sampler2D u_sourceTexture;
			in vec2 v_texCoord;
			out vec4 fragColor;
			
			void main() {
				vec4 source = texture(u_sourceTexture, v_texCoord);
				fragColor = vec4(source.rgb, 1.0);
			}
		`),r=this.gl.createProgram();return this.gl.attachShader(r,t),this.gl.attachShader(r,e),this.gl.linkProgram(r),r}createAlphaProgram(){let t=this.createVertexShader(),e=this.createShader(this.gl.FRAGMENT_SHADER,`#version 300 es
			precision highp float;
			
			uniform sampler2D u_sourceTexture;
			uniform vec2 u_resolution; // The width and height of the canvas
			in vec2 v_texCoord;
			out vec4 fragColor;

			// This function determines the value for a single byte in the YUV stream
			float getByteValue(float byteOffset) {
				float width = u_resolution.x;
				float height = u_resolution.y;

				float yPlaneSize = width * height;

				if (byteOffset < yPlaneSize) {
					// This byte is in the luma plane. Find the corresponding pixel coordinates to sample from
					float y = floor(byteOffset / width);
					float x = mod(byteOffset, width);
					
					// Add 0.5 to sample the center of the texel
					vec2 sampleCoord = (vec2(x, y) + 0.5) / u_resolution;
					
					// The luma value is the alpha from the source texture
					return texture(u_sourceTexture, sampleCoord).a;
				} else {
					// Write a fixed value for chroma and beyond
					return 128.0 / 255.0;
				}
			}
			
			void main() {
				// Each fragment writes 4 bytes (R, G, B, A)
				float pixelIndex = floor(gl_FragCoord.y) * u_resolution.x + floor(gl_FragCoord.x);
				float baseByteOffset = pixelIndex * 4.0;

				vec4 result;
				for (int i = 0; i < 4; i++) {
					float currentByteOffset = baseByteOffset + float(i);
					result[i] = getByteValue(currentByteOffset);
				}
				
				fragColor = result;
			}
		`),r=this.gl.createProgram();return this.gl.attachShader(r,t),this.gl.attachShader(r,e),this.gl.linkProgram(r),r}createShader(t,e){let r=this.gl.createShader(t);return this.gl.shaderSource(r,e),this.gl.compileShader(r),this.gl.getShaderParameter(r,this.gl.COMPILE_STATUS)||console.error("Shader compile error:",this.gl.getShaderInfoLog(r)),r}createVAO(){let t=this.gl.createVertexArray();this.gl.bindVertexArray(t);let e=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,e,this.gl.STATIC_DRAW);let n=this.gl.getAttribLocation(this.colorProgram,"a_position"),a=this.gl.getAttribLocation(this.colorProgram,"a_texCoord");return this.gl.enableVertexAttribArray(n),this.gl.vertexAttribPointer(n,2,this.gl.FLOAT,!1,16,0),this.gl.enableVertexAttribArray(a),this.gl.vertexAttribPointer(a,2,this.gl.FLOAT,!1,16,8),t}createTexture(){let t=this.gl.createTexture();return this.gl.bindTexture(this.gl.TEXTURE_2D,t),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),t}updateTexture(t){this.lastFrame!==t&&((t.displayWidth!==this.canvas.width||t.displayHeight!==this.canvas.height)&&(this.canvas.width=t.displayWidth,this.canvas.height=t.displayHeight),this.gl.activeTexture(this.gl.TEXTURE0),this.gl.bindTexture(this.gl.TEXTURE_2D,this.sourceTexture),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.gl.RGBA,this.gl.UNSIGNED_BYTE,t),this.lastFrame=t)}extractColor(t){return this.updateTexture(t),this.gl.useProgram(this.colorProgram),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),new VideoFrame(this.canvas,{timestamp:t.timestamp,duration:t.duration??void 0,alpha:"discard"})}extractAlpha(t){this.updateTexture(t),this.gl.useProgram(this.alphaProgram),this.gl.uniform2f(this.alphaResolutionLocation,this.canvas.width,this.canvas.height),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);let{width:e,height:r}=this.canvas,n=Math.ceil(e/2)*Math.ceil(r/2),a=e*r+n*2,s=Math.ceil(a/(e*4)),o=new Uint8Array(4*e*s);this.gl.readPixels(0,0,e,s,this.gl.RGBA,this.gl.UNSIGNED_BYTE,o),o=o.subarray(0,a),p(o[e*r]===128),p(o[o.length-1]===128);let c={format:"I420",codedWidth:e,codedHeight:r,timestamp:t.timestamp,duration:t.duration??void 0,transfer:[o.buffer]};return new VideoFrame(o,c)}close(){this.gl.getExtension("WEBGL_lose_context")?.loseContext(),this.gl=null}},Gr=class extends At{constructor(t){Ta(t),super(t.codec),this._encoder=new zi(this,t)}add(t,e){if(!(t instanceof pe))throw new TypeError("videoSample must be a VideoSample.");return this._encoder.add(t,!1,e)}_flushAndClose(t){return this._encoder.flushAndClose(t)}},Qs=class extends At{constructor(t,e){if(!(typeof HTMLCanvasElement<"u"&&t instanceof HTMLCanvasElement)&&!(typeof OffscreenCanvas<"u"&&t instanceof OffscreenCanvas))throw new TypeError("canvas must be an HTMLCanvasElement or OffscreenCanvas.");Ta(e),super(e.codec),this._encoder=new zi(this,e),this._canvas=t}add(t,e=0,r){if(!Number.isFinite(t)||t<0)throw new TypeError("timestamp must be a non-negative number.");if(!Number.isFinite(e)||e<0)throw new TypeError("duration must be a non-negative number.");let n=new pe(this._canvas,{timestamp:t,duration:e});return this._encoder.add(n,!0,r)}_flushAndClose(t){return this._encoder.flushAndClose(t)}},$s=class extends At{constructor(e,r){if(!(e instanceof MediaStreamTrack)||e.kind!=="video")throw new TypeError("track must be a video MediaStreamTrack.");Ta(r),r={...r,latencyMode:"realtime"};super(r.codec);this._abortController=null;this._workerTrackId=null;this._workerListener=null;this._promiseWithResolvers=Y();this._errorPromiseAccessed=!1;this._paused=!1;this._lastSampleTimestamp=null;this._pauseOffset=0;this._encoder=new zi(this,r),this._track=e}get errorPromise(){return this._errorPromiseAccessed=!0,this._promiseWithResolvers.promise}get paused(){return this._paused}async _start(){this._errorPromiseAccessed||console.warn("Make sure not to ignore the `errorPromise` field on MediaStreamVideoTrackSource, so that any internal errors get bubbled up properly."),this._abortController=new AbortController;let e=null,r=!1,n=a=>{if(r){a.close();return}let s=a.timestamp/1e6;if(this._paused){if(e!==null){if(this._lastSampleTimestamp!==null){let u=s-this._lastSampleTimestamp;this._pauseOffset-=u}this._lastSampleTimestamp=s}a.close();return}if(e===null){e=s;let c=this._connectedTrack.output._muxer;c.firstMediaStreamTimestamp===null?(c.firstMediaStreamTimestamp=performance.now()/1e3,this._timestampOffset=-e):this._timestampOffset=performance.now()/1e3-c.firstMediaStreamTimestamp-e}if(this._lastSampleTimestamp=s,this._encoder.getQueueSize()>=4){a.close();return}let o=new pe(a,{timestamp:s+this._pauseOffset});this._encoder.add(o,!0).catch(c=>{r=!0,this._abortController?.abort(),this._promiseWithResolvers.reject(c),this._workerTrackId!==null&&Ks({type:"stopTrack",trackId:this._workerTrackId})})};if(typeof MediaStreamTrackProcessor<"u"){let a=new MediaStreamTrackProcessor({track:this._track}),s=new WritableStream({write:n});a.readable.pipeTo(s,{signal:this._abortController.signal}).catch(o=>{o instanceof DOMException&&o.name==="AbortError"||this._promiseWithResolvers.reject(o)})}else if(await Vl())this._workerTrackId=Ol++,Ks({type:"videoTrack",trackId:this._workerTrackId,track:this._track}),this._workerListener=s=>{let o=s.data;o.type==="videoFrame"&&o.trackId===this._workerTrackId?n(o.videoFrame):o.type==="error"&&o.trackId===this._workerTrackId&&this._promiseWithResolvers.reject(o.error)},Ve.addEventListener("message",this._workerListener);else throw new Error("MediaStreamTrackProcessor is required but not supported by this browser.")}pause(){this._paused=!0}resume(){this._paused=!1}async _flushAndClose(e){this._abortController&&(this._abortController.abort(),this._abortController=null),this._workerTrackId!==null&&(p(this._workerListener),Ks({type:"stopTrack",trackId:this._workerTrackId}),await new Promise(r=>{let n=a=>{let s=a.data;s.type==="trackStopped"&&s.trackId===this._workerTrackId&&(p(this._workerListener),Ve.removeEventListener("message",this._workerListener),Ve.removeEventListener("message",n),r())};Ve.addEventListener("message",n)})),await this._encoder.flushAndClose(e)}},It=class extends Kr{constructor(e){super();this._connectedTrack=null;if(!ue.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${ue.join(", ")}.`);this._codec=e}},Ni=class extends It{constructor(t){super(t)}add(t,e){if(!(t instanceof W))throw new TypeError("packet must be an EncodedPacket.");if(t.isMetadataOnly)throw new TypeError("Metadata-only packets cannot be added.");if(e!==void 0&&(!e||typeof e!="object"))throw new TypeError("meta, when provided, must be an object.");return this._ensureValidAdd(),this._connectedTrack.output._muxer.addEncodedAudioPacket(this._connectedTrack,t,e)}},Li=class{constructor(t,e){this.source=t;this.encodingConfig=e;this.ensureEncoderPromise=null;this.encoderInitialized=!1;this.encoder=null;this.muxer=null;this.lastNumberOfChannels=null;this.lastSampleRate=null;this.isPcmEncoder=!1;this.outputSampleSize=null;this.writeOutputValue=null;this.customEncoder=null;this.customEncoderCallSerializer=new Et;this.customEncoderQueueSize=0;this.lastEndSampleIndex=null;this.error=null}async add(t,e){try{if(this.checkForEncoderError(),this.source._ensureValidAdd(),this.lastNumberOfChannels!==null&&this.lastSampleRate!==null){if(t.numberOfChannels!==this.lastNumberOfChannels||t.sampleRate!==this.lastSampleRate)throw new Error(`Audio parameters must remain constant. Expected ${this.lastNumberOfChannels} channels at ${this.lastSampleRate} Hz, got ${t.numberOfChannels} channels at ${t.sampleRate} Hz.`)}else this.lastNumberOfChannels=t.numberOfChannels,this.lastSampleRate=t.sampleRate;this.encoderInitialized||(this.ensureEncoderPromise||this.ensureEncoder(t),this.encoderInitialized||await this.ensureEncoderPromise),p(this.encoderInitialized);{let r=Math.round(t.timestamp*t.sampleRate),n=Math.round((t.timestamp+t.duration)*t.sampleRate);if(this.lastEndSampleIndex===null)this.lastEndSampleIndex=n;else{let a=r-this.lastEndSampleIndex;if(a>=64){let s=new Te({data:new Float32Array(a*t.numberOfChannels),format:"f32-planar",sampleRate:t.sampleRate,numberOfChannels:t.numberOfChannels,numberOfFrames:a,timestamp:this.lastEndSampleIndex/t.sampleRate});await this.add(s,!0)}this.lastEndSampleIndex+=t.numberOfFrames}}if(this.customEncoder){this.customEncoderQueueSize++;let r=t.clone(),n=this.customEncoderCallSerializer.call(()=>this.customEncoder.encode(r)).then(()=>this.customEncoderQueueSize--).catch(a=>this.error??=a).finally(()=>{r.close()});this.customEncoderQueueSize>=4&&await n,await this.muxer.mutex.currentPromise}else if(this.isPcmEncoder)await this.doPcmEncoding(t,e);else{p(this.encoder);let r=t.toAudioData();this.encoder.encode(r),r.close(),e&&t.close(),this.encoder.encodeQueueSize>=4&&await new Promise(n=>this.encoder.addEventListener("dequeue",n,{once:!0})),await this.muxer.mutex.currentPromise}}finally{e&&t.close()}}async doPcmEncoding(t,e){p(this.outputSampleSize),p(this.writeOutputValue);let{numberOfChannels:r,numberOfFrames:n,sampleRate:a,timestamp:s}=t,o=2048,c=[];for(let m=0;m<n;m+=o){let f=Math.min(o,t.numberOfFrames-m),g=f*r*this.outputSampleSize,b=new ArrayBuffer(g),h=new DataView(b);c.push({frameCount:f,view:h})}let u=t.allocationSize({planeIndex:0,format:"f32-planar"}),d=new Float32Array(u/Float32Array.BYTES_PER_ELEMENT);for(let m=0;m<r;m++){t.copyTo(d,{planeIndex:m,format:"f32-planar"});for(let f=0;f<c.length;f++){let{frameCount:g,view:b}=c[f];for(let h=0;h<g;h++)this.writeOutputValue(b,(h*r+m)*this.outputSampleSize,d[f*o+h])}}e&&t.close();let l={decoderConfig:{codec:this.encodingConfig.codec,numberOfChannels:r,sampleRate:a}};for(let m=0;m<c.length;m++){let{frameCount:f,view:g}=c[m],b=g.buffer,h=m*o,y=new W(new Uint8Array(b),"key",s+h/a,f/a);this.encodingConfig.onEncodedPacket?.(y,l),await this.muxer.addEncodedAudioPacket(this.source._connectedTrack,y,l)}}ensureEncoder(t){this.ensureEncoderPromise=(async()=>{let{numberOfChannels:e,sampleRate:r}=t,n=wa({numberOfChannels:e,sampleRate:r,...this.encodingConfig});this.encodingConfig.onEncoderConfig?.(n);let a=rr.find(s=>s.supports(this.encodingConfig.codec,n));if(a)this.customEncoder=new a,this.customEncoder.codec=this.encodingConfig.codec,this.customEncoder.config=n,this.customEncoder.onPacket=(s,o)=>{if(!(s instanceof W))throw new TypeError("The first argument passed to onPacket must be an EncodedPacket.");if(o!==void 0&&(!o||typeof o!="object"))throw new TypeError("The second argument passed to onPacket must be an object or undefined.");this.encodingConfig.onEncodedPacket?.(s,o),this.muxer.addEncodedAudioPacket(this.source._connectedTrack,s,o).catch(c=>{this.error??=c})},await this.customEncoder.init();else if(Z.includes(this.encodingConfig.codec))this.initPcmEncoder();else{if(typeof AudioEncoder>"u")throw new Error("AudioEncoder is not supported by this browser.");if(!(await AudioEncoder.isConfigSupported(n)).supported)throw new Error(`This specific encoder configuration (${n.codec}, ${n.bitrate} bps, ${n.numberOfChannels} channels, ${n.sampleRate} Hz) is not supported by this browser. Consider using another codec or changing your audio parameters.`);let o=new Error("Encoding error").stack;this.encoder=new AudioEncoder({output:(c,u)=>{if(this.encodingConfig.codec==="aac"&&u?.decoderConfig){let l=!1;if(!u.decoderConfig.description||u.decoderConfig.description.byteLength<2?l=!0:l=ht(H(u.decoderConfig.description)).objectType===0,l){let m=Number(K(n.codec.split(".")));u.decoderConfig.description=yr({objectType:m,numberOfChannels:u.decoderConfig.numberOfChannels,sampleRate:u.decoderConfig.sampleRate})}}let d=W.fromEncodedChunk(c);this.encodingConfig.onEncodedPacket?.(d,u),this.muxer.addEncodedAudioPacket(this.source._connectedTrack,d,u).catch(l=>{this.error??=l})},error:c=>{c.stack=o,this.error??=c}}),this.encoder.configure(n)}p(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer,this.encoderInitialized=!0})()}initPcmEncoder(){this.isPcmEncoder=!0;let t=this.encodingConfig.codec,{dataType:e,sampleSize:r,littleEndian:n}=be(t);switch(this.outputSampleSize=r,r){case 1:e==="unsigned"?this.writeOutputValue=(a,s,o)=>a.setUint8(s,ae((o+1)*127.5,0,255)):e==="signed"?this.writeOutputValue=(a,s,o)=>{a.setInt8(s,ae(Math.round(o*128),-128,127))}:e==="ulaw"?this.writeOutputValue=(a,s,o)=>{let c=ae(Math.floor(o*32767),-32768,32767);a.setUint8(s,Ko(c))}:e==="alaw"?this.writeOutputValue=(a,s,o)=>{let c=ae(Math.floor(o*32767),-32768,32767);a.setUint8(s,Qo(c))}:p(!1);break;case 2:e==="unsigned"?this.writeOutputValue=(a,s,o)=>a.setUint16(s,ae((o+1)*32767.5,0,65535),n):e==="signed"?this.writeOutputValue=(a,s,o)=>a.setInt16(s,ae(Math.round(o*32767),-32768,32767),n):p(!1);break;case 3:e==="unsigned"?this.writeOutputValue=(a,s,o)=>Yt(a,s,ae((o+1)*83886075e-1,0,16777215),n):e==="signed"?this.writeOutputValue=(a,s,o)=>po(a,s,ae(Math.round(o*8388607),-8388608,8388607),n):p(!1);break;case 4:e==="unsigned"?this.writeOutputValue=(a,s,o)=>a.setUint32(s,ae((o+1)*21474836475e-1,0,4294967295),n):e==="signed"?this.writeOutputValue=(a,s,o)=>a.setInt32(s,ae(Math.round(o*2147483647),-2147483648,2147483647),n):e==="float"?this.writeOutputValue=(a,s,o)=>a.setFloat32(s,o,n):p(!1);break;case 8:e==="float"?this.writeOutputValue=(a,s,o)=>a.setFloat64(s,o,n):p(!1);break;default:J(r),p(!1)}}async flushAndClose(t){t||this.checkForEncoderError(),this.customEncoder?(t||this.customEncoderCallSerializer.call(()=>this.customEncoder.flush()),await this.customEncoderCallSerializer.call(()=>this.customEncoder.close())):this.encoder&&(t||await this.encoder.flush(),this.encoder.state!=="closed"&&this.encoder.close()),t||this.checkForEncoderError()}getQueueSize(){return this.customEncoder?this.customEncoderQueueSize:this.isPcmEncoder?0:this.encoder?.encodeQueueSize??0}checkForEncoderError(){if(this.error)throw this.error}},Qr=class extends It{constructor(t){Sa(t),super(t.codec),this._encoder=new Li(this,t)}add(t){if(!(t instanceof Te))throw new TypeError("audioSample must be an AudioSample.");return this._encoder.add(t,!1)}_flushAndClose(t){return this._encoder.flushAndClose(t)}},Xs=class extends It{constructor(e){Sa(e);super(e.codec);this._accumulatedTime=0;this._encoder=new Li(this,e)}async add(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=Te._fromAudioBuffer(e,this._accumulatedTime);this._accumulatedTime+=e.duration;for(let n of r)await this._encoder.add(n,!0)}_flushAndClose(e){return this._encoder.flushAndClose(e)}},Ys=class extends It{constructor(e,r){if(!(e instanceof MediaStreamTrack)||e.kind!=="audio")throw new TypeError("track must be an audio MediaStreamTrack.");Sa(r);super(r.codec);this._abortController=null;this._audioContext=null;this._scriptProcessorNode=null;this._promiseWithResolvers=Y();this._errorPromiseAccessed=!1;this._paused=!1;this._lastSampleTimestamp=null;this._pauseOffset=0;this._encoder=new Li(this,r),this._track=e}get errorPromise(){return this._errorPromiseAccessed=!0,this._promiseWithResolvers.promise}get paused(){return this._paused}async _start(){this._errorPromiseAccessed||console.warn("Make sure not to ignore the `errorPromise` field on MediaStreamVideoTrackSource, so that any internal errors get bubbled up properly."),this._abortController=new AbortController;let e=null,r=!1,n=a=>{if(r){a.close();return}let s=a.timestamp;if(this._paused){if(e!==null){if(this._lastSampleTimestamp!==null){let c=s-this._lastSampleTimestamp;this._pauseOffset-=c}this._lastSampleTimestamp=s}a.close();return}if(e===null){e=a.timestamp;let o=this._connectedTrack.output._muxer;o.firstMediaStreamTimestamp===null?(o.firstMediaStreamTimestamp=performance.now()/1e3,this._timestampOffset=-e):this._timestampOffset=performance.now()/1e3-o.firstMediaStreamTimestamp-e}if(this._lastSampleTimestamp=s,this._encoder.getQueueSize()>=4){a.close();return}a.setTimestamp(s+this._pauseOffset),this._encoder.add(a,!0).catch(o=>{r=!0,this._abortController?.abort(),this._promiseWithResolvers.reject(o),this._audioContext?.suspend()})};if(typeof MediaStreamTrackProcessor<"u"){let a=new MediaStreamTrackProcessor({track:this._track}),s=new WritableStream({write:o=>n(new Te(o))});a.readable.pipeTo(s,{signal:this._abortController.signal}).catch(o=>{o instanceof DOMException&&o.name==="AbortError"||this._promiseWithResolvers.reject(o)})}else{let a=window.AudioContext||window.webkitAudioContext;this._audioContext=new a({sampleRate:this._track.getSettings().sampleRate});let s=this._audioContext.createMediaStreamSource(new MediaStream([this._track]));this._scriptProcessorNode=this._audioContext.createScriptProcessor(4096),this._audioContext.state==="suspended"&&await this._audioContext.resume(),s.connect(this._scriptProcessorNode),this._scriptProcessorNode.connect(this._audioContext.destination);let o=0;this._scriptProcessorNode.onaudioprocess=c=>{let u=Te._fromAudioBuffer(c.inputBuffer,o);o+=c.inputBuffer.duration;for(let d of u)n(d)}}}pause(){this._paused=!0}resume(){this._paused=!1}async _flushAndClose(e){this._abortController&&(this._abortController.abort(),this._abortController=null),this._audioContext&&(p(this._scriptProcessorNode),this._scriptProcessorNode.disconnect(),await this._audioContext.suspend()),await this._encoder.flushAndClose(e)}},Dl=()=>{let i=(r,n)=>{n?self.postMessage(r,{transfer:n}):self.postMessage(r)};i({type:"support",supported:typeof MediaStreamTrackProcessor<"u"});let t=new Map,e=new Map;self.addEventListener("message",r=>{let n=r.data;switch(n.type){case"videoTrack":{e.set(n.trackId,n.track);let a=new MediaStreamTrackProcessor({track:n.track}),s=new WritableStream({write:c=>{if(!e.has(n.trackId)){c.close();return}i({type:"videoFrame",trackId:n.trackId,videoFrame:c},[c])}}),o=new AbortController;t.set(n.trackId,o),a.readable.pipeTo(s,{signal:o.signal}).catch(c=>{c instanceof DOMException&&c.name==="AbortError"||i({type:"error",trackId:n.trackId,error:c})})}break;case"stopTrack":{let a=t.get(n.trackId);a&&(a.abort(),t.delete(n.trackId)),e.get(n.trackId)?.stop(),e.delete(n.trackId),i({type:"trackStopped",trackId:n.trackId})}break;default:J(n)}})},Ol=0,Ve=null,Ul=()=>{let i=new Blob([`(${Dl.toString()})()`],{type:"application/javascript"}),t=URL.createObjectURL(i);Ve=new Worker(t)},js=null,Vl=async()=>js!==null?js:(Ve||Ul(),new Promise(i=>{p(Ve);let t=e=>{let r=e.data;r.type==="support"&&(js=r.supported,Ve.removeEventListener("message",t),i(r.supported))};Ve.addEventListener("message",t)})),Ks=(i,t)=>{p(Ve),t?Ve.postMessage(i,t):Ve.postMessage(i)},$r=class extends Kr{constructor(e){super();this._connectedTrack=null;if(!_e.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${_e.join(", ")}.`);this._codec=e}},Zs=class extends $r{constructor(e){super(e);this._error=null;this._parser=new na({codec:e,output:(r,n)=>{this._connectedTrack?.output._muxer.addSubtitleCue(this._connectedTrack,r,n).catch(a=>{this._error??=a})}})}add(e){if(typeof e!="string")throw new TypeError("text must be a string.");return this._checkForError(),this._ensureValidAdd(),this._parser.parse(e),this._connectedTrack.output._muxer.mutex.currentPromise}_checkForError(){if(this._error)throw this._error}async _flushAndClose(e){e||this._checkForError()}};var gu=["video","audio","subtitle"],Js=i=>{if(!i||typeof i!="object")throw new TypeError("metadata must be an object.");if(i.languageCode!==void 0&&!lt(i.languageCode))throw new TypeError("metadata.languageCode, when provided, must be a three-letter, ISO 639-2/T language code.");if(i.name!==void 0&&typeof i.name!="string")throw new TypeError("metadata.name, when provided, must be a string.");if(i.disposition!==void 0&&xo(i.disposition),i.maximumPacketCount!==void 0&&(!Number.isInteger(i.maximumPacketCount)||i.maximumPacketCount<0))throw new TypeError("metadata.maximumPacketCount, when provided, must be a non-negative integer.")},Xr=class{constructor(t){this.state="pending";this._tracks=[];this._startPromise=null;this._cancelPromise=null;this._finalizePromise=null;this._mutex=new Pe;this._metadataTags={};if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!(t.format instanceof De))throw new TypeError("options.format must be an OutputFormat.");if(!(t.target instanceof Pt))throw new TypeError("options.target must be a Target.");if(t.target._output)throw new Error("Target is already used for another output.");t.target._output=this,this.format=t.format,this.target=t.target,this._writer=t.target._createWriter(),this._muxer=t.format._createMuxer(this)}addVideoTrack(t,e={}){if(!(t instanceof At))throw new TypeError("source must be a VideoSource.");if(Js(e),e.rotation!==void 0&&![0,90,180,270].includes(e.rotation))throw new TypeError(`Invalid video rotation: ${e.rotation}. Has to be 0, 90, 180 or 270.`);if(!this.format.supportsVideoRotationMetadata&&e.rotation)throw new Error(`${this.format._name} does not support video rotation metadata.`);if(e.frameRate!==void 0&&(!Number.isFinite(e.frameRate)||e.frameRate<=0))throw new TypeError(`Invalid video frame rate: ${e.frameRate}. Must be a positive number.`);this._addTrack("video",t,e)}addAudioTrack(t,e={}){if(!(t instanceof It))throw new TypeError("source must be an AudioSource.");Js(e),this._addTrack("audio",t,e)}addSubtitleTrack(t,e={}){if(!(t instanceof $r))throw new TypeError("source must be a SubtitleSource.");Js(e),this._addTrack("subtitle",t,e)}setMetadataTags(t){if(ei(t),this.state!=="pending")throw new Error("Cannot set metadata tags after output has been started or canceled.");this._metadataTags=t}_addTrack(t,e,r){if(this.state!=="pending")throw new Error("Cannot add track after output has been started or canceled.");if(e._connectedTrack)throw new Error("Source is already used for a track.");let n=this.format.getSupportedTrackCounts(),a=this._tracks.reduce((u,d)=>u+(d.type===t?1:0),0),s=n[t].max;if(a===s)throw new Error(s===0?`${this.format._name} does not support ${t} tracks.`:`${this.format._name} does not support more than ${s} ${t} track${s===1?"":"s"}.`);let o=n.total.max;if(this._tracks.length===o)throw new Error(`${this.format._name} does not support more than ${o} tracks${o===1?"":"s"} in total.`);let c={id:this._tracks.length+1,output:this,type:t,source:e,metadata:r};if(c.type==="video"){let u=this.format.getSupportedVideoCodecs();if(u.length===0)throw new Error(`${this.format._name} does not support video tracks.`+this.format._codecUnsupportedHint(c.source._codec));if(!u.includes(c.source._codec))throw new Error(`Codec '${c.source._codec}' cannot be contained within ${this.format._name}. Supported video codecs are: ${u.map(d=>`'${d}'`).join(", ")}.`+this.format._codecUnsupportedHint(c.source._codec))}else if(c.type==="audio"){let u=this.format.getSupportedAudioCodecs();if(u.length===0)throw new Error(`${this.format._name} does not support audio tracks.`+this.format._codecUnsupportedHint(c.source._codec));if(!u.includes(c.source._codec))throw new Error(`Codec '${c.source._codec}' cannot be contained within ${this.format._name}. Supported audio codecs are: ${u.map(d=>`'${d}'`).join(", ")}.`+this.format._codecUnsupportedHint(c.source._codec))}else if(c.type==="subtitle"){let u=this.format.getSupportedSubtitleCodecs();if(u.length===0)throw new Error(`${this.format._name} does not support subtitle tracks.`+this.format._codecUnsupportedHint(c.source._codec));if(!u.includes(c.source._codec))throw new Error(`Codec '${c.source._codec}' cannot be contained within ${this.format._name}. Supported subtitle codecs are: ${u.map(d=>`'${d}'`).join(", ")}.`+this.format._codecUnsupportedHint(c.source._codec))}this._tracks.push(c),e._connectedTrack=c}async start(){let t=this.format.getSupportedTrackCounts();for(let r of gu){let n=this._tracks.reduce((s,o)=>s+(o.type===r?1:0),0),a=t[r].min;if(n<a)throw new Error(a===t[r].max?`${this.format._name} requires exactly ${a} ${r} track${a===1?"":"s"}.`:`${this.format._name} requires at least ${a} ${r} track${a===1?"":"s"}.`)}let e=t.total.min;if(this._tracks.length<e)throw new Error(e===t.total.max?`${this.format._name} requires exactly ${e} track${e===1?"":"s"}.`:`${this.format._name} requires at least ${e} track${e===1?"":"s"}.`);if(this.state==="canceled")throw new Error("Output has been canceled.");return this._startPromise?(console.warn("Output has already been started."),this._startPromise):this._startPromise=(async()=>{this.state="started",this._writer.start();let r=await this._mutex.acquire();await this._muxer.start();let n=this._tracks.map(a=>a.source._start());await Promise.all(n),r()})()}getMimeType(){return this._muxer.getMimeType()}async cancel(){if(this._cancelPromise)return console.warn("Output has already been canceled."),this._cancelPromise;if(this.state==="finalizing"||this.state==="finalized"){console.warn("Output has already been finalized.");return}return this._cancelPromise=(async()=>{this.state="canceled";let t=await this._mutex.acquire(),e=this._tracks.map(r=>r.source._flushOrWaitForOngoingClose(!0));await Promise.all(e),await this._writer.close(),t()})()}async finalize(){if(this.state==="pending")throw new Error("Cannot finalize before starting.");if(this.state==="canceled")throw new Error("Cannot finalize after canceling.");return this._finalizePromise?(console.warn("Output has already been finalized."),this._finalizePromise):this._finalizePromise=(async()=>{this.state="finalizing";let t=await this._mutex.acquire(),e=this._tracks.map(r=>r.source._flushOrWaitForOngoingClose(!1));await Promise.all(e),await this._muxer.finalize(),await this._writer.flush(),await this._writer.finalize(),this.state="finalized",t()})()}};var bu=i=>{if(i!==void 0&&(!i||typeof i!="object"))throw new TypeError("options.video, when provided, must be an object.");if(i?.discard!==void 0&&typeof i.discard!="boolean")throw new TypeError("options.video.discard, when provided, must be a boolean.");if(i?.forceTranscode!==void 0&&typeof i.forceTranscode!="boolean")throw new TypeError("options.video.forceTranscode, when provided, must be a boolean.");if(i?.codec!==void 0&&!ce.includes(i.codec))throw new TypeError(`options.video.codec, when provided, must be one of: ${ce.join(", ")}.`);if(i?.bitrate!==void 0&&!(i.bitrate instanceof ke)&&(!Number.isInteger(i.bitrate)||i.bitrate<=0))throw new TypeError("options.video.bitrate, when provided, must be a positive integer or a quality.");if(i?.width!==void 0&&(!Number.isInteger(i.width)||i.width<=0))throw new TypeError("options.video.width, when provided, must be a positive integer.");if(i?.height!==void 0&&(!Number.isInteger(i.height)||i.height<=0))throw new TypeError("options.video.height, when provided, must be a positive integer.");if(i?.fit!==void 0&&!["fill","contain","cover"].includes(i.fit))throw new TypeError("options.video.fit, when provided, must be one of 'fill', 'contain', or 'cover'.");if(i?.width!==void 0&&i.height!==void 0&&i.fit===void 0)throw new TypeError("When both options.video.width and options.video.height are provided, options.video.fit must also be provided.");if(i?.rotate!==void 0&&![0,90,180,270].includes(i.rotate))throw new TypeError("options.video.rotate, when provided, must be 0, 90, 180 or 270.");if(i?.allowRotationMetadata!==void 0&&typeof i.allowRotationMetadata!="boolean")throw new TypeError("options.video.allowRotationMetadata, when provided, must be a boolean.");if(i?.crop!==void 0&&li(i.crop,"options.video."),i?.frameRate!==void 0&&(!Number.isFinite(i.frameRate)||i.frameRate<=0))throw new TypeError("options.video.frameRate, when provided, must be a finite positive number.");if(i?.alpha!==void 0&&!["discard","keep"].includes(i.alpha))throw new TypeError("options.video.alpha, when provided, must be either 'discard' or 'keep'.");if(i?.keyFrameInterval!==void 0&&(!Number.isFinite(i.keyFrameInterval)||i.keyFrameInterval<0))throw new TypeError("options.video.keyFrameInterval, when provided, must be a non-negative number.");if(i?.process!==void 0&&typeof i.process!="function")throw new TypeError("options.video.process, when provided, must be a function.");if(i?.processedWidth!==void 0&&(!Number.isInteger(i.processedWidth)||i.processedWidth<=0))throw new TypeError("options.video.processedWidth, when provided, must be a positive integer.");if(i?.processedHeight!==void 0&&(!Number.isInteger(i.processedHeight)||i.processedHeight<=0))throw new TypeError("options.video.processedHeight, when provided, must be a positive integer.");if(i?.hardwareAcceleration!==void 0&&!["no-preference","prefer-hardware","prefer-software"].includes(i.hardwareAcceleration))throw new TypeError("options.video.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.")},ku=i=>{if(i!==void 0&&(!i||typeof i!="object"))throw new TypeError("options.audio, when provided, must be an object.");if(i?.discard!==void 0&&typeof i.discard!="boolean")throw new TypeError("options.audio.discard, when provided, must be a boolean.");if(i?.forceTranscode!==void 0&&typeof i.forceTranscode!="boolean")throw new TypeError("options.audio.forceTranscode, when provided, must be a boolean.");if(i?.codec!==void 0&&!ue.includes(i.codec))throw new TypeError(`options.audio.codec, when provided, must be one of: ${ue.join(", ")}.`);if(i?.bitrate!==void 0&&!(i.bitrate instanceof ke)&&(!Number.isInteger(i.bitrate)||i.bitrate<=0))throw new TypeError("options.audio.bitrate, when provided, must be a positive integer or a quality.");if(i?.numberOfChannels!==void 0&&(!Number.isInteger(i.numberOfChannels)||i.numberOfChannels<=0))throw new TypeError("options.audio.numberOfChannels, when provided, must be a positive integer.");if(i?.sampleRate!==void 0&&(!Number.isInteger(i.sampleRate)||i.sampleRate<=0))throw new TypeError("options.audio.sampleRate, when provided, must be a positive integer.");if(i?.process!==void 0&&typeof i.process!="function")throw new TypeError("options.audio.process, when provided, must be a function.");if(i?.processedNumberOfChannels!==void 0&&(!Number.isInteger(i.processedNumberOfChannels)||i.processedNumberOfChannels<=0))throw new TypeError("options.audio.processedNumberOfChannels, when provided, must be a positive integer.");if(i?.processedSampleRate!==void 0&&(!Number.isInteger(i.processedSampleRate)||i.processedSampleRate<=0))throw new TypeError("options.audio.processedSampleRate, when provided, must be a positive integer.")},eo=2,to=48e3,ro=class i{constructor(t){this._addedCounts={video:0,audio:0,subtitle:0};this._totalTrackCount=0;this._trackPromises=[];this._executed=!1;this._synchronizer=new io;this._totalDuration=null;this._maxTimestamps=new Map;this._canceled=!1;this.onProgress=void 0;this._computeProgress=!1;this._lastProgress=0;this.isValid=!1;this.utilizedTracks=[];this.discardedTracks=[];if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!(t.input instanceof vi))throw new TypeError("options.input must be an Input.");if(!(t.output instanceof Xr))throw new TypeError("options.output must be an Output.");if(t.output._tracks.length>0||Object.keys(t.output._metadataTags).length>0||t.output.state!=="pending")throw new TypeError("options.output must be fresh: no tracks or metadata tags added and not started.");if(typeof t.video!="function"&&bu(t.video),typeof t.audio!="function"&&ku(t.audio),t.trim!==void 0&&(!t.trim||typeof t.trim!="object"))throw new TypeError("options.trim, when provided, must be an object.");if(t.trim?.start!==void 0&&!Number.isFinite(t.trim.start))throw new TypeError("options.trim.start, when provided, must be a finite number.");if(t.trim?.end!==void 0&&!Number.isFinite(t.trim.end))throw new TypeError("options.trim.end, when provided, must be a finite number.");if(t.trim?.start!==void 0&&t.trim.end!==void 0&&t.trim.start>=t.trim.end)throw new TypeError("options.trim.start must be less than options.trim.end.");if(t.tags!==void 0&&(typeof t.tags!="object"||!t.tags)&&typeof t.tags!="function")throw new TypeError("options.tags, when provided, must be an object or a function.");if(typeof t.tags=="object"&&ei(t.tags),t.showWarnings!==void 0&&typeof t.showWarnings!="boolean")throw new TypeError("options.showWarnings, when provided, must be a boolean.");this._options=t,this.input=t.input,this.output=t.output;let{promise:e,resolve:r}=Y();this._started=e,this._start=r}static async init(t){let e=new i(t);return await e._init(),e}async _init(){this._startTimestamp=this._options.trim?.start??Math.max(await this.input.getFirstTimestamp(),0),this._endTimestamp=Math.max(this._options.trim?.end??1/0,this._startTimestamp);let t=await this.input.getTracks(),e=this.output.format.getSupportedTrackCounts(),r=1,n=1;for(let u of t){let d;if(u.isVideoTrack()?this._options.video&&(typeof this._options.video=="function"?(d=await this._options.video(u,r),bu(d),r++):d=this._options.video):u.isAudioTrack()?this._options.audio&&(typeof this._options.audio=="function"?(d=await this._options.audio(u,n),ku(d),n++):d=this._options.audio):p(!1),d?.discard){this.discardedTracks.push({track:u,reason:"discarded_by_user"});continue}if(this._totalTrackCount===e.total.max){this.discardedTracks.push({track:u,reason:"max_track_count_reached"});continue}if(this._addedCounts[u.type]===e[u.type].max){this.discardedTracks.push({track:u,reason:"max_track_count_of_type_reached"});continue}u.isVideoTrack()?await this._processVideoTrack(u,d??{}):u.isAudioTrack()&&await this._processAudioTrack(u,d??{})}let a=await this.input.getMetadataTags(),s;if(this._options.tags){let u=typeof this._options.tags=="function"?await this._options.tags(a):this._options.tags;ei(u),s=u}else s=a;let o=(await this.input.getFormat()).mimeType===this.output.format.mimeType,c=a.raw===s.raw;if(a.raw&&c&&!o&&delete s.raw,this.output.setMetadataTags(s),this.isValid=this._totalTrackCount>=e.total.min&&this._addedCounts.video>=e.video.min&&this._addedCounts.audio>=e.audio.min&&this._addedCounts.subtitle>=e.subtitle.min,this._options.showWarnings??!0){let u=[],d=this.discardedTracks.filter(l=>l.reason!=="discarded_by_user");d.length>0&&u.push("Some tracks had to be discarded from the conversion:",d),this.isValid||u.push(`

`+this._getInvalidityExplanation().join("")),u.length>0&&console.warn(...u)}}_getInvalidityExplanation(){let t=[];if(this.discardedTracks.length===0)t.push("Due to missing tracks, this conversion cannot be executed.");else{let e=this.discardedTracks.every(r=>r.reason==="discarded_by_user"||r.reason==="no_encodable_target_codec");if(t.push("Due to discarded tracks, this conversion cannot be executed."),e){let r=this.discardedTracks.flatMap(n=>n.reason==="discarded_by_user"?[]:n.track.type==="video"?this.output.format.getSupportedVideoCodecs():n.track.type==="audio"?this.output.format.getSupportedAudioCodecs():this.output.format.getSupportedSubtitleCodecs());r.length===1?t.push(`
Tracks were discarded because your environment is not able to encode '${r[0]}'.`):t.push(`
Tracks were discarded because your environment is not able to encode any of the following codecs: ${r.map(n=>`'${n}'`).join(", ")}.`),r.includes("mp3")&&t.push(`
The @mediabunny/mp3-encoder extension package provides support for encoding MP3.`),(r.includes("ac3")||r.includes("eac3"))&&t.push(`
The @mediabunny/ac3 extension package provides support for encoding and decoding AC-3/E-AC-3.`)}else t.push(`
Check the discardedTracks field for more info.`)}return t}async execute(){if(!this.isValid)throw new Error(`Cannot execute this conversion because its output configuration is invalid. Make sure to always check the isValid field before executing a conversion.
`+this._getInvalidityExplanation().join(""));if(this._executed)throw new Error("Conversion cannot be executed twice.");if(this._executed=!0,this.onProgress){let t=this.utilizedTracks.map(r=>r.computeDuration()),e=Math.max(0,...await Promise.all(t));this._computeProgress=!0,this._totalDuration=Math.min(e-this._startTimestamp,this._endTimestamp-this._startTimestamp);for(let r of this.utilizedTracks)this._maxTimestamps.set(r.id,0);this.onProgress?.(0)}await this.output.start(),this._start();try{await Promise.all(this._trackPromises)}catch(t){throw this._canceled||this.cancel(),t}if(this._canceled)throw new Ia;await this.output.finalize(),this._computeProgress&&this.onProgress?.(1)}async cancel(){if(!(this.output.state==="finalizing"||this.output.state==="finalized")){if(this._canceled){console.warn("Conversion already canceled.");return}this._canceled=!0,await this.output.cancel()}}async _processVideoTrack(t,e){let r=t.codec;if(!r){this.discardedTracks.push({track:t,reason:"unknown_source_codec"});return}let n,a=_t(t.rotation+(e.rotate??0)),s=this.output.format.supportsVideoRotationMetadata&&(e.allowRotationMetadata??!0),[o,c]=a%180===0?[t.codedWidth,t.codedHeight]:[t.codedHeight,t.codedWidth],u=e.crop;u&&di(u,o,c);let[d,l]=u?[u.width,u.height]:[o,c],m=d,f=l,g=m/f,b=T=>Math.ceil(T/2)*2;e.width!==void 0&&e.height===void 0?(m=b(e.width),f=b(Math.round(m/g))):e.width===void 0&&e.height!==void 0?(f=b(e.height),m=b(Math.round(f*g))):e.width!==void 0&&e.height!==void 0&&(m=b(e.width),f=b(e.height));let h=await t.getFirstTimestamp(),y=!!e.forceTranscode||h<this._startTimestamp||!!e.frameRate||e.keyFrameInterval!==void 0||e.process!==void 0,k=m!==d||f!==l||a!==0&&(!s||e.process!==void 0)||!!u,w=e.alpha??"discard",S=this.output.format.getSupportedVideoCodecs();if(!y&&!e.bitrate&&!k&&S.includes(r)&&(!e.codec||e.codec===r)){let T=new Vi(r);n=T,this._trackPromises.push((async()=>{await this._started;let x=new tt(t),C={decoderConfig:await t.getDecoderConfig()??void 0},_=Number.isFinite(this._endTimestamp)?await x.getPacket(this._endTimestamp,{metadataOnly:!0})??void 0:void 0;for await(let B of x.packets(void 0,_,{verifyKeyPackets:!0})){if(this._canceled)return;let E=B.clone({timestamp:B.timestamp-this._startTimestamp,sideData:w==="discard"?{}:B.sideData});p(E.timestamp>=0),this._reportProgress(t.id,E.timestamp),await T.add(E,C),this._synchronizer.shouldWait(t.id,E.timestamp)&&await this._synchronizer.wait(E.timestamp)}T.close(),this._synchronizer.closeTrack(t.id)})())}else{if(!await t.canDecode()){this.discardedTracks.push({track:t,reason:"undecodable_source_codec"});return}e.codec&&(S=S.filter(B=>B===e.codec));let x=e.bitrate??xa,P=await qs(S,{width:e.process&&e.processedWidth?e.processedWidth:m,height:e.process&&e.processedHeight?e.processedHeight:f,bitrate:x});if(!P){this.discardedTracks.push({track:t,reason:"no_encodable_target_codec"});return}let C={codec:P,bitrate:x,keyFrameInterval:e.keyFrameInterval,sizeChangeBehavior:e.fit??"passThrough",alpha:w,hardwareAcceleration:e.hardwareAcceleration},_=new Gr(C);if(n=_,!k){let B=new Xr({format:new jr,target:new Bi}),E=new Gr(C);B.addVideoTrack(E),await B.start();let z=await new ar(t).getSample(h);if(z)try{await E.add(z),z.close(),await B.finalize()}catch(j){console.info("Error when probing encoder support. Falling back to rerender path.",j),k=!0,B.cancel()}else await B.cancel()}k?this._trackPromises.push((async()=>{await this._started;let E=new pi(t,{width:m,height:f,fit:e.fit??"fill",rotation:a,crop:e.crop,poolSize:1,alpha:w==="keep"}).canvases(this._startTimestamp,this._endTimestamp),F=e.frameRate,z=null,j=null,G=null,$=async ne=>{p(z),p(F!==void 0);let ye=Math.round((ne-j)*F);for(let pr=1;pr<ye;pr++){let vt=new pe(z,{timestamp:j+pr/F,duration:1/F});await this._registerVideoSample(t,e,_,vt),vt.close()}};for await(let{canvas:ne,timestamp:ye,duration:pr}of E){if(this._canceled)return;let vt=Math.max(ye-this._startTimestamp,0);if(G=vt+pr,F!==void 0){let Wi=Math.floor(vt*F)/F;if(z!==null)if(Wi<=j){z=ne,j=Wi;continue}else await $(Wi);vt=Wi}let ao=new pe(ne,{timestamp:vt,duration:F!==void 0?1/F:pr});await this._registerVideoSample(t,e,_,ao),ao.close(),F!==void 0&&(z=ne,j=vt)}z&&(p(G!==null),p(F!==void 0),await $(Math.floor(G*F)/F)),_.close(),this._synchronizer.closeTrack(t.id)})()):this._trackPromises.push((async()=>{await this._started;let B=new ar(t),E=e.frameRate,F=null,z=null,j=null,G=async $=>{p(F),p(E!==void 0);let ne=Math.round(($-z)*E);for(let ye=1;ye<ne;ye++)F.setTimestamp(z+ye/E),F.setDuration(1/E),await this._registerVideoSample(t,e,_,F);F.close()};for await(let $ of B.samples(this._startTimestamp,this._endTimestamp)){if(this._canceled){$.close(),F?.close();return}let ne=Math.max($.timestamp-this._startTimestamp,0);if(j=ne+$.duration,E!==void 0){let ye=Math.floor(ne*E)/E;if(F!==null)if(ye<=z){F.close(),F=$,z=ye;continue}else await G(ye);ne=ye,$.setDuration(1/E)}$.setTimestamp(ne),await this._registerVideoSample(t,e,_,$),E!==void 0?(F=$,z=ne):$.close()}F&&(p(j!==null),p(E!==void 0),await G(Math.floor(j*E)/E)),_.close(),this._synchronizer.closeTrack(t.id)})())}this.output.addVideoTrack(n,{frameRate:e.frameRate,languageCode:lt(t.languageCode)?t.languageCode:void 0,name:t.name??void 0,disposition:t.disposition,rotation:k?0:a}),this._addedCounts.video++,this._totalTrackCount++,this.utilizedTracks.push(t)}async _registerVideoSample(t,e,r,n){if(this._canceled)return;this._reportProgress(t.id,n.timestamp);let a;if(!e.process)a=[n];else{let s=e.process(n);s instanceof Promise&&(s=await s),Array.isArray(s)||(s=s===null?[]:[s]),a=s.map(o=>o instanceof pe?o:typeof VideoFrame<"u"&&o instanceof VideoFrame?new pe(o):new pe(o,{timestamp:n.timestamp,duration:n.duration}))}for(let s of a){if(this._canceled)break;await r.add(s),this._synchronizer.shouldWait(t.id,s.timestamp)&&await this._synchronizer.wait(s.timestamp)}for(let s of a)s!==n&&s.close()}async _processAudioTrack(t,e){let r=t.codec;if(!r){this.discardedTracks.push({track:t,reason:"unknown_source_codec"});return}let n,a=t.numberOfChannels,s=t.sampleRate,o=await t.getFirstTimestamp(),c=e.numberOfChannels??a,u=e.sampleRate??s,d=c!==a||u!==s||o<this._startTimestamp||o>this._startTimestamp&&!this.output.format.supportsTimestampedMediaData,l=this.output.format.getSupportedAudioCodecs();if(!e.forceTranscode&&!e.bitrate&&!d&&l.includes(r)&&(!e.codec||e.codec===r)&&!e.process){let m=new Ni(r);n=m,this._trackPromises.push((async()=>{await this._started;let f=new tt(t),b={decoderConfig:await t.getDecoderConfig()??void 0},h=Number.isFinite(this._endTimestamp)?await f.getPacket(this._endTimestamp,{metadataOnly:!0})??void 0:void 0;for await(let y of f.packets(void 0,h)){if(this._canceled)return;let k=y.clone({timestamp:y.timestamp-this._startTimestamp});p(k.timestamp>=0),this._reportProgress(t.id,k.timestamp),await m.add(k,b),this._synchronizer.shouldWait(t.id,k.timestamp)&&await this._synchronizer.wait(k.timestamp)}m.close(),this._synchronizer.closeTrack(t.id)})())}else{if(!await t.canDecode()){this.discardedTracks.push({track:t,reason:"undecodable_source_codec"});return}let f=null;e.codec&&(l=l.filter(h=>h===e.codec));let g=e.bitrate??xa,b=await Ui(l,{numberOfChannels:e.process&&e.processedNumberOfChannels?e.processedNumberOfChannels:c,sampleRate:e.process&&e.processedSampleRate?e.processedSampleRate:u,bitrate:g});if(!b.some(h=>pt.includes(h))&&l.some(h=>pt.includes(h))&&(c!==eo||u!==to)){let y=(await Ui(l,{numberOfChannels:eo,sampleRate:to,bitrate:g})).find(k=>pt.includes(k));y&&(d=!0,f=y,c=eo,u=to)}else f=b[0]??null;if(f===null){this.discardedTracks.push({track:t,reason:"no_encodable_target_codec"});return}if(d)n=this._resampleAudio(t,e,f,c,u,g);else{let h=new Qr({codec:f,bitrate:g});n=h,this._trackPromises.push((async()=>{await this._started;let y=new sr(t);for await(let k of y.samples(void 0,this._endTimestamp)){if(this._canceled){k.close();return}k.setTimestamp(k.timestamp-this._startTimestamp),await this._registerAudioSample(t,e,h,k),k.close()}h.close(),this._synchronizer.closeTrack(t.id)})())}}this.output.addAudioTrack(n,{languageCode:lt(t.languageCode)?t.languageCode:void 0,name:t.name??void 0,disposition:t.disposition}),this._addedCounts.audio++,this._totalTrackCount++,this.utilizedTracks.push(t)}async _registerAudioSample(t,e,r,n){if(this._canceled)return;this._reportProgress(t.id,n.timestamp);let a;if(!e.process)a=[n];else{let s=e.process(n);if(s instanceof Promise&&(s=await s),Array.isArray(s)||(s=s===null?[]:[s]),!s.every(o=>o instanceof Te))throw new TypeError("The audio process function must return an AudioSample, null, or an array of AudioSamples.");a=s}for(let s of a){if(this._canceled)break;await r.add(s),this._synchronizer.shouldWait(t.id,s.timestamp)&&await this._synchronizer.wait(s.timestamp)}for(let s of a)s!==n&&s.close()}_resampleAudio(t,e,r,n,a,s){let o=new Qr({codec:r,bitrate:s});return this._trackPromises.push((async()=>{await this._started;let c=new no({targetNumberOfChannels:n,targetSampleRate:a,startTime:this._startTimestamp,endTime:this._endTimestamp,onSample:async l=>{await this._registerAudioSample(t,e,o,l),l.close()}}),d=new sr(t).samples(this._startTimestamp,this._endTimestamp);for await(let l of d){if(this._canceled){l.close();return}await c.add(l),l.close()}await c.finalize(),o.close(),this._synchronizer.closeTrack(t.id)})()),o}_reportProgress(t,e){if(!this._computeProgress)return;p(this._totalDuration!==null),this._maxTimestamps.set(t,Math.max(e,this._maxTimestamps.get(t)));let r=Math.min(...this._maxTimestamps.values()),n=ae(r/this._totalDuration,0,1);n!==this._lastProgress&&(this._lastProgress=n,this.onProgress?.(n))}},Ia=class extends Error{constructor(t="Conversion has been canceled."){super(t),this.name="ConversionCanceledError"}},yu=5,io=class{constructor(){this.maxTimestamps=new Map;this.resolvers=[]}computeMinAndMaybeResolve(){let t=1/0;for(let[,e]of this.maxTimestamps)t=Math.min(t,e);for(let e=0;e<this.resolvers.length;e++){let r=this.resolvers[e];r.timestamp-t<yu&&(r.resolve(),this.resolvers.splice(e,1),e--)}return t}shouldWait(t,e){this.maxTimestamps.set(t,Math.max(e,this.maxTimestamps.get(t)??-1/0));let r=this.computeMinAndMaybeResolve();return e-r>=yu}wait(t){let{promise:e,resolve:r}=Y();return this.resolvers.push({timestamp:t,resolve:r}),e}closeTrack(t){this.maxTimestamps.delete(t),this.computeMinAndMaybeResolve()}},no=class{constructor(t){this.sourceSampleRate=null;this.sourceNumberOfChannels=null;this.targetSampleRate=t.targetSampleRate,this.targetNumberOfChannels=t.targetNumberOfChannels,this.startTime=t.startTime,this.endTime=t.endTime,this.onSample=t.onSample,this.bufferSizeInFrames=Math.floor(this.targetSampleRate*5),this.bufferSizeInSamples=this.bufferSizeInFrames*this.targetNumberOfChannels,this.outputBuffer=new Float32Array(this.bufferSizeInSamples),this.bufferStartFrame=0,this.maxWrittenFrame=-1}doChannelMixerSetup(){p(this.sourceNumberOfChannels!==null);let t=this.sourceNumberOfChannels,e=this.targetNumberOfChannels;t===1&&e===2?this.channelMixer=(r,n)=>r[n*t]:t===1&&e===4?this.channelMixer=(r,n,a)=>r[n*t]*+(a<2):t===1&&e===6?this.channelMixer=(r,n,a)=>r[n*t]*+(a===2):t===2&&e===1?this.channelMixer=(r,n)=>{let a=n*t;return .5*(r[a]+r[a+1])}:t===2&&e===4?this.channelMixer=(r,n,a)=>r[n*t+a]*+(a<2):t===2&&e===6?this.channelMixer=(r,n,a)=>r[n*t+a]*+(a<2):t===4&&e===1?this.channelMixer=(r,n)=>{let a=n*t;return .25*(r[a]+r[a+1]+r[a+2]+r[a+3])}:t===4&&e===2?this.channelMixer=(r,n,a)=>{let s=n*t;return .5*(r[s+a]+r[s+a+2])}:t===4&&e===6?this.channelMixer=(r,n,a)=>{let s=n*t;return a<2?r[s+a]:a===2||a===3?0:r[s+a-2]}:t===6&&e===1?this.channelMixer=(r,n)=>{let a=n*t;return Math.SQRT1_2*(r[a]+r[a+1])+r[a+2]+.5*(r[a+4]+r[a+5])}:t===6&&e===2?this.channelMixer=(r,n,a)=>{let s=n*t;return r[s+a]+Math.SQRT1_2*(r[s+2]+r[s+a+4])}:t===6&&e===4?this.channelMixer=(r,n,a)=>{let s=n*t;return a<2?r[s+a]+Math.SQRT1_2*r[s+2]:r[s+a+2]}:this.channelMixer=(r,n,a)=>a<t?r[n*t+a]:0}ensureTempBufferSize(t){let e=this.tempSourceBuffer.length;for(;e<t;)e*=2;if(e!==this.tempSourceBuffer.length){let r=new Float32Array(e);r.set(this.tempSourceBuffer),this.tempSourceBuffer=r}}async add(t){this.sourceSampleRate===null&&(this.sourceSampleRate=t.sampleRate,this.sourceNumberOfChannels=t.numberOfChannels,this.tempSourceBuffer=new Float32Array(this.sourceSampleRate*this.sourceNumberOfChannels),this.doChannelMixerSetup());let e=t.numberOfFrames*t.numberOfChannels;this.ensureTempBufferSize(e);let r=t.allocationSize({planeIndex:0,format:"f32"}),n=new Float32Array(this.tempSourceBuffer.buffer,0,r/4);t.copyTo(n,{planeIndex:0,format:"f32"});let a=t.timestamp-this.startTime,s=t.numberOfFrames/this.sourceSampleRate,o=Math.min(a+s,this.endTime-this.startTime),c=Math.floor(a*this.targetSampleRate),u=Math.ceil(o*this.targetSampleRate);for(let d=c;d<u;d++){if(d<this.bufferStartFrame)continue;for(;d>=this.bufferStartFrame+this.bufferSizeInFrames;)await this.finalizeCurrentBuffer(),this.bufferStartFrame+=this.bufferSizeInFrames;let l=d-this.bufferStartFrame;p(l<this.bufferSizeInFrames);let g=(d/this.targetSampleRate-a)*this.sourceSampleRate,b=Math.floor(g),h=Math.ceil(g),y=g-b;for(let k=0;k<this.targetNumberOfChannels;k++){let w=0,S=0;b>=0&&b<t.numberOfFrames&&(w=this.channelMixer(n,b,k)),h>=0&&h<t.numberOfFrames&&(S=this.channelMixer(n,h,k));let T=w+y*(S-w),x=l*this.targetNumberOfChannels+k;this.outputBuffer[x]+=T}this.maxWrittenFrame=Math.max(this.maxWrittenFrame,l)}}async finalizeCurrentBuffer(){if(this.maxWrittenFrame<0)return;let t=(this.maxWrittenFrame+1)*this.targetNumberOfChannels,e=new Float32Array(t);e.set(this.outputBuffer.subarray(0,t));let r=this.bufferStartFrame/this.targetSampleRate,n=new Te({format:"f32",sampleRate:this.targetSampleRate,numberOfChannels:this.targetNumberOfChannels,timestamp:r,data:e});await this.onSample(n),this.outputBuffer.fill(0),this.maxWrittenFrame=-1}finalize(){return this.finalizeCurrentBuffer()}};var wu=Symbol.for("mediabunny loaded");globalThis[wu]&&console.error(`[WARNING]
Mediabunny was loaded twice. This will likely cause Mediabunny not to work correctly. Check if multiple dependencies are importing different versions of Mediabunny, or if something is being bundled incorrectly.`);globalThis[wu]=!0;export{_c as ADTS,ad as ALL_FORMATS,gu as ALL_TRACK_TYPES,ue as AUDIO_CODECS,Xn as AdtsInputFormat,Ls as AdtsOutputFormat,Bt as AttachedFile,es as AudioBufferSink,Xs as AudioBufferSource,Te as AudioSample,sr as AudioSampleSink,Qr as AudioSampleSource,It as AudioSource,fi as BaseMediaSampleSink,xs as BlobSource,Ss as BufferSource,Ri as BufferTarget,pi as CanvasSink,Qs as CanvasSource,ro as Conversion,Ia as ConversionCanceledError,mn as CustomAudioDecoder,pn as CustomAudioEncoder,ln as CustomVideoDecoder,fn as CustomVideoEncoder,Ni as EncodedAudioPacketSource,W as EncodedPacket,tt as EncodedPacketSink,Vi as EncodedVideoPacketSource,Fc as FLAC,Ps as FilePathSource,Us as FilePathTarget,$n as FlacInputFormat,Ws as FlacOutputFormat,vi as Input,te as InputAudioTrack,de as InputDisposedError,Be as InputFormat,or as InputTrack,Fe as InputVideoTrack,Pi as IsobmffInputFormat,Di as IsobmffOutputFormat,Pc as MATROSKA,Ic as MP3,xc as MP4,Mc as MPEG_TS,Ai as MatroskaInputFormat,Kr as MediaSource,Ys as MediaStreamAudioTrackSource,$s as MediaStreamVideoTrackSource,Oi as MkvOutputFormat,Hr as MovOutputFormat,Kn as Mp3InputFormat,Vs as Mp3OutputFormat,Hn as Mp4InputFormat,jr as Mp4OutputFormat,Yn as MpegTsInputFormat,Hs as MpegTsOutputFormat,pt as NON_PCM_AUDIO_CODECS,Bi as NullTarget,Ec as OGG,Qn as OggInputFormat,Ns as OggOutputFormat,Xr as Output,De as OutputFormat,Z as PCM_AUDIO_CODECS,Cc as QTFF,xa as QUALITY_HIGH,vl as QUALITY_LOW,El as QUALITY_MEDIUM,_l as QUALITY_VERY_HIGH,Il as QUALITY_VERY_LOW,ke as Quality,qn as QuickTimeInputFormat,As as ReadableStreamSource,Oe as RichImageData,_e as SUBTITLE_CODECS,Qe as Source,Zn as StreamSource,da as StreamTarget,$r as SubtitleSource,Pt as Target,Zs as TextSubtitleSource,Cs as UrlSource,ce as VIDEO_CODECS,Qa as VIDEO_SAMPLE_PIXEL_FORMATS,pe as VideoSample,Ir as VideoSampleColorSpace,ar as VideoSampleSink,Gr as VideoSampleSource,At as VideoSource,vc as WAVE,Ac as WEBM,zs as WavOutputFormat,Gn as WaveInputFormat,jn as WebMInputFormat,qr as WebMOutputFormat,Fl as canEncode,Pa as canEncodeAudio,Aa as canEncodeSubtitles,Ca as canEncodeVideo,Ui as getEncodableAudioCodecs,Ml as getEncodableCodecs,hu as getEncodableSubtitleCodecs,pu as getEncodableVideoCodecs,Rl as getFirstEncodableAudioCodec,Bl as getFirstEncodableSubtitleCodec,qs as getFirstEncodableVideoCodec,Hu as registerDecoder,qu as registerEncoder};