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mediabunny

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Pure TypeScript media toolkit for reading, writing, and converting media files, directly in the browser.

mediabunny.dev

Vanilagy/mediabunny

138 lines • 625 kB
/*!
 * 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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t=n.substreams[0];h(t);let e=gn[t.acmod]+t.lfeon;if(t.numDepSub>0){let r=[2,2,1,1,2,2,2,1,1];for(let i=0;i<9;i++)t.chanLoc&1<<8-i&&(e+=r[i])}return e};var pe=class{constructor(t){this.input=t}dispose(){}};var de=new Uint8Array(0),Q=class n{constructor(t,e,r,i,a=-1,s,o){this.data=t;this.type=e;this.timestamp=r;this.duration=i;this.sequenceNumber=a;if(t===de&&s===void 0)throw new Error("Internal error: byteLength must be explicitly provided when constructing metadata-only packets.");if(s===void 0&&(s=t.byteLength),!(t instanceof Uint8Array))throw new TypeError("data must be a Uint8Array.");if(e!=="key"&&e!=="delta")throw new TypeError('type must be either "key" or "delta".');if(!Number.isFinite(r))throw new TypeError("timestamp must be a number.");if(!Number.isFinite(i)||i<0)throw new TypeError("duration must be a non-negative number.");if(!Number.isFinite(a))throw new TypeError("sequenceNumber must be a number.");if(!Number.isInteger(s)||s<0)throw new TypeError("byteLength must be a non-negative integer.");if(o!==void 0&&(typeof o!="object"||!o))throw new 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===de}get microsecondTimestamp(){return Math.trunc(wt*this.timestamp)}get microsecondDuration(){return Math.trunc(wt*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 n(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 n(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 za=n=>{let e=(n.hasVideo?"video/":n.hasAudio?"audio/":"application/")+(n.isQuickTime?"quicktime":"mp4");if(n.codecStrings.length>0){let r=[...new Set(n.codecStrings)];e+=`; codecs="${r.join(", ")}"`}return e},Na=n=>{let t=V(n),e=0,r=t.getUint8(e);e+=1,e+=3;let i=nr(n.subarray(e,e+16));e+=16;let a=null;if(r>0){let o=t.getUint32(e);if(e+=4,o>0){a=[];for(let c=0;c<o;c++)a.push(nr(n.subarray(e,e+16))),e+=16}}let s=t.getUint32(e);return e+=4,{systemId:i,keyIds:a,data:n.slice(e,e+s)}},La=(n,t)=>n.systemId===t.systemId&&ba(n.data,t.data);var ot=8,Gt=16,Kt=n=>{let t=F(n),e=re(n,4),r=8;t===1&&(t=Oe(n),r=16);let a=t-r;return a<0?null:{name:e,totalSize:t,headerSize:r,contentSize:a}},hr=n=>Qt(n)/65536,Wa=n=>Qt(n)/1073741824,Ha=n=>{let t=0;for(let e=0;e<4;e++){t<<=7;let r=O(n);if(t|=r&127,(r&128)===0)break}return t},ct=n=>{let t=se(n);return n.skip(2),t=Math.min(t,n.remainingLength),me.decode(B(n,t))},hl=n=>{let t=Kt(n);if(!t||t.name!=="data"||n.remainingLength<8)return null;let e=F(n);n.skip(4);let r=B(n,t.contentSize-8);switch(e){case 1:return me.decode(r);case 2:return new TextDecoder("utf-16be").decode(r);case 13:return new Le(r,"image/jpeg");case 14:return new Le(r,"image/png");case 27:return new Le(r,"image/bmp");default:return r}};var ut=16,jt=new Uint32Array(256),wi=new Uint32Array(256),Si=new Uint32Array(256),Ai=new Uint32Array(256),xi=new Uint32Array(256),Ce=new Uint32Array(256),gl=new Uint32Array(10),bl=!1,Nm=()=>{let n=new Uint8Array(256),t=new Uint8Array(256),e=new Uint8Array(256);for(let a=0,s=1;a<256;a++)e[a]=s,t[s]=a,s=s^s<<1^(s&128?283:0);let r=(a,s)=>a&&s?e[(t[a]+t[s])%255]:0;n[0]=99;for(let a=1;a<256;a++){let s=e[255-t[a]],o=s^s<<1^s<<2^s<<3^s<<4;o=o>>>8^o&255^99,n[a]=o}for(let a=0;a<256;a++){let s=n[a],o=n.indexOf(a);jt[a]=s<<24|s<<16|s<<8|s,Ce[a]=o<<24|o<<16|o<<8|o;let c=r(o,14),u=r(o,9),l=r(o,13),m=r(o,11),d=c<<24|u<<16|l<<8|m;wi[a]=d,Si[a]=d>>>8|d<<24,Ai[a]=d>>>16|d<<16,xi[a]=d>>>24|d<<8}let i=1;for(let a=0;a<10;a++)gl[a]=i<<24,i=i<<1^(i&128?283:0);bl=!0},kn=class{constructor(){this.roundkey=new Uint32Array(44);this.iv=new Uint32Array(ut/Uint32Array.BYTES_PER_ELEMENT);this.in=new Uint8Array(ut);this.out=new Uint8Array(ut);this.inView=new DataView(this.in.buffer);this.outView=new DataView(this.out.buffer)}init({key:t,iv:e}){h(t.byteLength===16),h(e.byteLength===16),bl||Nm();let r=new DataView(t.buffer,t.byteOffset,t.byteLength),i=new DataView(e.buffer,e.byteOffset,e.byteLength);this.roundkey[0]=r.getUint32(0,!1),this.roundkey[1]=r.getUint32(4,!1),this.roundkey[2]=r.getUint32(8,!1),this.roundkey[3]=r.getUint32(12,!1),this.iv[0]=i.getUint32(0,!1),this.iv[1]=i.getUint32(4,!1),this.iv[2]=i.getUint32(8,!1),this.iv[3]=i.getUint32(12,!1);for(let a=4;a<44;a+=4){let s=this.roundkey[a-1];this.roundkey[a]=this.roundkey[a-4]^jt[s>>>16&255]&4278190080^jt[s>>>8&255]&16711680^jt[s>>>0&255]&65280^jt[s>>>24&255]&255^gl[a/4-1],this.roundkey[a+1]=this.roundkey[a-3]^this.roundkey[a],this.roundkey[a+2]=this.roundkey[a-2]^this.roundkey[a+1],this.roundkey[a+3]=this.roundkey[a-1]^this.roundkey[a+2]}for(let a=0,s=40;a<s;a+=4,s-=4)for(let o=0;o<4;o++){let c=this.roundkey[a+o];this.roundkey[a+o]=this.roundkey[s+o],this.roundkey[s+o]=c}for(let a=4;a<40;a+=4)for(let s=0;s<4;s++){let o=this.roundkey[a+s];this.roundkey[a+s]=wi[jt[o>>>24&255]&255]^Si[jt[o>>>16&255]&255]^Ai[jt[o>>>8&255]&255]^xi[jt[o>>>0&255]&255]}}decrypt(){let t=this.inView.getUint32(0,!1)^this.roundkey[0],e=this.inView.getUint32(4,!1)^this.roundkey[1],r=this.inView.getUint32(8,!1)^this.roundkey[2],i=this.inView.getUint32(12,!1)^this.roundkey[3],a=this.inView.getUint32(0,!1),s=this.inView.getUint32(4,!1),o=this.inView.getUint32(8,!1),c=this.inView.getUint32(12,!1),u,l,m,d;for(let y=1;y<10;y++){let k=y*4;u=wi[t>>>24]^Si[i>>>16&255]^Ai[r>>>8&255]^xi[e&255]^this.roundkey[k],l=wi[e>>>24]^Si[t>>>16&255]^Ai[i>>>8&255]^xi[r&255]^this.roundkey[k+1],m=wi[r>>>24]^Si[e>>>16&255]^Ai[t>>>8&255]^xi[i&255]^this.roundkey[k+2],d=wi[i>>>24]^Si[r>>>16&255]^Ai[e>>>8&255]^xi[t&255]^this.roundkey[k+3],t=u,e=l,r=m,i=d}let f=Ce[t>>>24&255]&4278190080^Ce[i>>>16&255]&16711680^Ce[r>>>8&255]&65280^Ce[e>>>0&255]&255^this.roundkey[40],p=Ce[e>>>24&255]&4278190080^Ce[t>>>16&255]&16711680^Ce[i>>>8&255]&65280^Ce[r>>>0&255]&255^this.roundkey[41],b=Ce[r>>>24&255]&4278190080^Ce[e>>>16&255]&16711680^Ce[t>>>8&255]&65280^Ce[i>>>0&255]&255^this.roundkey[42],g=Ce[i>>>24&255]&4278190080^Ce[r>>>16&255]&16711680^Ce[e>>>8&255]&65280^Ce[t>>>0&255]&255^this.roundkey[43];this.outView.setUint32(0,f^this.iv[0],!1),this.outView.setUint32(4,p^this.iv[1],!1),this.outView.setUint32(8,b^this.iv[2],!1),this.outView.setUint32(12,g^this.iv[3],!1),this.iv[0]=a,this.iv[1]=s,this.iv[2]=o,this.iv[3]=c}},yl=(n,t,e)=>{let r=!1,i=0,a=2**16,s=16,o=new kn;return new ReadableStream({pull:async c=>{r||(o.init(await t()),r=!0);let u=a+s,l=n.requestSliceRange(i,0,u);if(l instanceof Promise&&(l=await l),!l||l.length===0)throw new Error("Invalid ciphertext.");let m=l.length;if(m%16!==0)throw new Error("Invalid ciphertext.");let d=m===u?m-s:m,f=B(l,d),p=new Uint8Array(d);for(let b=0;b<d;b+=16)o.in.set(f.subarray(b,b+16)),o.decrypt(),p.set(o.out,b);if(d<m)c.enqueue(p),i+=d;else{let b=p[d-1];if(b===0||b>16)throw new Error("Invalid PKCS#7 padding. Incorrect key or corrupted data.");let g=p.subarray(0,d-b);c.enqueue(g),c.close(),e()}},cancel:()=>{e()}})};var qa=class n extends pe{constructor(e){super(e);this.moovSlice=null;this.currentTrack=null;this.tracks=[];this.metadataPromise=null;this.movieTimescale=-1;this.movieDurationInTimescale=-1;this.isQuickTime=!1;this.metadataTags={};this.currentMetadataKeys=null;this.isFragmented=!1;this.fragmentTrackDefaults=[];this.psshBoxes=[];this.currentFragment=null;this.lastReadFragment=null;this.decryptionKeyCache=new Map;this.reader=e._reader}async getTrackBackings(){return await this.readMetadata(),this.tracks.map(e=>e.trackBacking)}async getMimeType(){await this.readMetadata();let e=await this.getTrackBackings(),r=await Promise.all(e.map(i=>i.getDecoderConfig().then(a=>a?.codec??null)));return za({isQuickTime:this.isQuickTime,hasVideo:this.tracks.some(i=>i.info?.type==="video"),hasAudio:this.tracks.some(i=>i.info?.type==="audio"),codecStrings:r.filter(Boolean)})}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}readMetadata(){return this.metadataPromise??=(async()=>{let e=0,r=!1;for(;;){let i=this.reader.requestSliceRange(e,ot,Gt);if(i instanceof Promise&&(i=await i),!i)break;let a=e,s=Kt(i);if(!s)break;if(s.name==="ftyp"||s.name==="styp"){let o=re(i,4);this.isQuickTime=o==="qt  "}else if(s.name==="moov"){let o=this.reader.requestSlice(i.filePos,s.contentSize);if(o instanceof Promise&&(o=await o),!o)break;this.moovSlice=o,this.readContiguousBoxes(this.moovSlice);for(let c of this.tracks){let u=c.editListPreviousSegmentDurations/this.movieTimescale;c.editListOffset-=Math.round(u*c.timescale)}r=this.isFragmented&&this.reader.fileSize!==null&&this.reader.fileSize>a+s.totalSize;break}else if(s.name==="moof"){if(!this.input._initInput)throw new Error('"moof" box encountered with no "moov" box present; this file is likely a Segment as described in ISO/IEC 14496-12 Section 8.16. A separate init file that contains a "moov" box is required to read this file, please provide it using InputOptions.initInput.');let o=await this.input._initInput._getDemuxer();if(o.constructor!==n)throw new Error("Init input must match the input's format.");await o.readMetadata(),this.movieTimescale=o.movieTimescale,this.movieDurationInTimescale=o.movieDurationInTimescale,this.metadataTags=o.metadataTags,this.isFragmented=!0,this.fragmentTrackDefaults=o.fragmentTrackDefaults,this.psshBoxes=o.psshBoxes;for(let c of o.tracks){let u={id:c.id,demuxer:this,trackBacking:null,disposition:c.disposition,timescale:c.timescale,durationInMediaTimescale:c.durationInMediaTimescale,durationInMovieTimescale:c.durationInMovieTimescale,rotation:c.rotation,internalCodecId:c.internalCodecId,name:c.name,languageCode:c.languageCode,sampleTableByteOffset:null,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:c.editListPreviousSegmentDurations,editListOffset:c.editListOffset,encryptionInfo:c.encryptionInfo,encryptionAuxInfo:null,frmaCodecString:null,info:c.info};if(c.trackBacking){if(h(u.info),u.info.type==="video"&&u.info.width!==-1){let l=u;u.trackBacking=new Ka(l),this.tracks.push(u)}else if(u.info.type==="audio"&&u.info.numberOfChannels!==-1){let l=u;u.trackBacking=new Qa(l),this.tracks.push(u)}}}r=!1;break}e=a+s.totalSize}if(r){h(this.reader.fileSize!==null);let i=this.reader.requestSlice(this.reader.fileSize-4,4);i instanceof Promise&&(i=await i),h(i);let a=F(i),s=this.reader.fileSize-a;if(s>=0&&s<=this.reader.fileSize-Gt){let o=this.reader.requestSliceRange(s,ot,Gt);if(o instanceof Promise&&(o=await o),o){let c=Kt(o);if(c&&c.name==="mfra"){let u=this.reader.requestSlice(o.filePos,c.contentSize);u instanceof Promise&&(u=await u),u&&this.readContiguousBoxes(u)}}}}})()}getSampleTableForTrack(e){if(e.sampleTable)return e.sampleTable;let r={sampleTimingEntries:[],sampleCompositionTimeOffsets:[],sampleSizes:[],keySampleIndices:null,chunkOffsets:[],sampleToChunk:[],presentationTimestamps:null,presentationTimestampIndexMap:null};if(e.sampleTable=r,e.sampleTableByteOffset===null)return r;h(this.moovSlice);let i=this.moovSlice.slice(e.sampleTableByteOffset);if(this.currentTrack=e,this.traverseBox(i),this.currentTrack=null,e.info?.type==="audio"&&e.info.codec&&ee.includes(e.info.codec)&&r.sampleCompositionTimeOffsets.length===0){h(e.info?.type==="audio");let s=Ae(e.info.codec),o=[],c=[];for(let u=0;u<r.sampleToChunk.length;u++){let l=r.sampleToChunk[u],m=r.sampleToChunk[u+1],d=(m?m.startChunkIndex:r.chunkOffsets.length)-l.startChunkIndex;for(let f=0;f<d;f++){let p=l.startSampleIndex+f*l.samplesPerChunk,b=p+l.samplesPerChunk,g=H(r.sampleTimingEntries,p,C=>C.startIndex),y=r.sampleTimingEntries[g],k=H(r.sampleTimingEntries,b,C=>C.startIndex),w=r.sampleTimingEntries[k],T=y.startDecodeTimestamp+(p-y.startIndex)*y.delta,x=w.startDecodeTimestamp+(b-w.startIndex)*w.delta-T,P=X(o);P&&P.delta===x?P.count++:o.push({startIndex:l.startChunkIndex+f,startDecodeTimestamp:T,count:1,delta:x});let A=l.samplesPerChunk*s.sampleSize*e.info.numberOfChannels;c.push(A)}l.startSampleIndex=l.startChunkIndex,l.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,ot,Gt);r instanceof Promise&&(r=await r),h(r);let i=Kt(r);h(i?.name==="moof");let a=this.reader.requestSlice(e,i.totalSize);a instanceof Promise&&(a=await a),h(a),this.traverseBox(a);let s=this.lastReadFragment;h(s&&s.moofOffset===e);for(let[,o]of s.trackData){let c=o.track,{fragmentPositionCache:u}=c;if(!o.startTimestampIsFinal){let m=c.fragmentLookupTable.find(d=>d.moofOffset===s.moofOffset);if(m)Jo(o,m.timestamp);else{let d=H(u,s.moofOffset-1,f=>f.moofOffset);if(d!==-1){let f=u[d];Jo(o,f.endTimestamp)}}o.startTimestampIsFinal=!0}let l=H(u,o.startTimestamp,m=>m.startTimestamp);if((l===-1||u[l].moofOffset!==s.moofOffset)&&u.splice(l+1,0,{moofOffset:s.moofOffset,startTimestamp:o.startTimestamp,endTimestamp:o.endTimestamp}),o.encryptionAuxInfo&&c.encryptionInfo){let m=await Al(this.reader,c.encryptionInfo,o.encryptionAuxInfo);for(let d=0;d<Math.min(o.samples.length,m.length);d++){let f=m[d];o.samples[d].encryption=f}}}return s}readContiguousBoxes(e){let r=e.filePos;for(;e.filePos-r<=e.length-ot&&this.traverseBox(e););}*iterateContiguousBoxes(e){let r=e.filePos;for(;e.filePos-r<=e.length-ot;){let i=e.filePos,a=Kt(e);if(!a)break;yield{boxInfo:a,slice:e},e.filePos=i+a.totalSize}}traverseBox(e){let r=e.filePos,i=Kt(e);if(!i)return!1;let a=e.filePos,s=r+i.totalSize;switch(i.name){case"mdia":case"minf":case"dinf":case"mfra":case"edts":case"sinf":case"schi":this.readContiguousBoxes(e.slice(a,i.contentSize));break;case"mvhd":{let o=O(e);e.skip(3),o===1?(e.skip(16),this.movieTimescale=F(e),this.movieDurationInTimescale=Oe(e)):(e.skip(8),this.movieTimescale=F(e),this.movieDurationInTimescale=F(e))}break;case"trak":{let o={id:-1,demuxer:this,trackBacking:null,disposition:{...Se,primary:!1},info:null,timescale:-1,durationInMovieTimescale:-1,durationInMediaTimescale:-1,rotation:0,internalCodecId:null,name:null,languageCode:J,sampleTableByteOffset:-1,sampleTable:null,fragmentLookupTable:[],currentFragmentState:null,fragmentPositionCache:[],editListPreviousSegmentDurations:0,editListOffset:0,encryptionInfo:null,encryptionAuxInfo:null,frmaCodecString:null};if(this.currentTrack=o,this.readContiguousBoxes(e.slice(a,i.contentSize)),o.id!==-1&&o.timescale!==-1&&o.info!==null){if(o.info.type==="video"&&o.info.width!==-1){let c=o;o.trackBacking=new Ka(c),this.tracks.push(o)}else if(o.info.type==="audio"&&o.info.numberOfChannels!==-1){let c=o;o.trackBacking=new Qa(c),this.tracks.push(o)}}this.currentTrack=null}break;case"tkhd":{let o=this.currentTrack;if(!o)break;let c=O(e),l=!!(lt(e)&1);if(o.disposition.default=l,c===0)e.skip(8),o.id=F(e),e.skip(4),o.durationInMovieTimescale=F(e);else if(c===1)e.skip(16),o.id=F(e),e.skip(4),o.durationInMovieTimescale=Oe(e);else throw new Error(`Incorrect track header version ${c}.`);e.skip(2*4+2+2+2+2);let m=[hr(e),hr(e),Wa(e),hr(e),hr(e),Wa(e),hr(e),hr(e),Wa(e)],d=Ze(sn(qm(m),90));h(d===0||d===90||d===180||d===270),o.rotation=d}break;case"elst":{let o=this.currentTrack;if(!o)break;let c=O(e);e.skip(3);let u=!1,l=0,m=F(e);for(let d=0;d<m;d++){let f=c===1?Oe(e):F(e),p=c===1?Pl(e):Qt(e),b=hr(e);if(f!==0){if(u){console.warn("Unsupported edit list: multiple edits are not currently supported. Only using first edit.");break}if(p===-1){l+=f;continue}if(b!==1){console.warn("Unsupported edit list entry: media rate must be 1.");break}o.editListPreviousSegmentDurations=l,o.editListOffset=p,u=!0}}}break;case"mdhd":{let o=this.currentTrack;if(!o)break;let c=O(e);e.skip(3),c===0?(e.skip(8),o.timescale=F(e),o.durationInMediaTimescale=F(e)):c===1&&(e.skip(16),o.timescale=F(e),o.durationInMediaTimescale=Oe(e));let u=se(e);if(u>0){o.languageCode="";for(let l=0;l<3;l++)o.languageCode=String.fromCharCode(96+(u&31))+o.languageCode,u>>=5;Ut(o.languageCode)||(o.languageCode=J)}}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,squarePixelWidth:-1,squarePixelHeight:-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,pcmLittleEndian:!1,pcmSampleSize:null})}break;case"stbl":{let o=this.currentTrack;if(!o)break;o.sampleTableByteOffset=r,this.readContiguousBoxes(e.slice(a,i.contentSize))}break;case"stsd":{let o=this.currentTrack;if(!o||o.info===null||o.sampleTable)break;let c=O(e);e.skip(3);let u=F(e);for(let l=0;l<u;l++){let m=e.filePos,d=Kt(e);if(!d)break;o.internalCodecId=d.name;let f=d.name.toLowerCase();if(o.info.type==="video"){e.skip(6*1+2+2+2+3*4),o.info.width=se(e),o.info.height=se(e),o.info.squarePixelWidth=o.info.width,o.info.squarePixelHeight=o.info.height,e.skip(50),o.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,m+d.totalSize-e.filePos));let p=f==="encv"?o.frmaCodecString:f;o.frmaCodecString=null,p==="avc1"||p==="avc3"?(o.info.codec="avc",o.info.avcType=p==="avc1"?1:3):p==="hvc1"||p==="hev1"?o.info.codec="hevc":p==="vp08"?o.info.codec="vp8":p==="vp09"?o.info.codec="vp9":p==="av01"?o.info.codec="av1":console.warn(p===null?"Unknown encrypted video codec due to missing frma box.":`Unsupported video codec (sample entry type '${d.name}').`)}else{e.skip(6*1+2);let p=se(e);e.skip(3*2);let b=se(e),g=se(e);e.skip(2*2);let y=F(e)/65536,k=null;c===0&&p>0&&(p===1?(e.skip(4),g=8*F(e),e.skip(2*4)):p===2&&(e.skip(4),y=ja(e),b=F(e),e.skip(4),g=F(e),k=F(e),e.skip(2*4))),o.info.numberOfChannels=b,o.info.sampleRate=y,o.frmaCodecString=null,this.readContiguousBoxes(e.slice(e.filePos,m+d.totalSize-e.filePos));let w=f==="enca"?o.frmaCodecString:f;if(o.frmaCodecString=null,w!=="mp4a")if(w==="opus")o.info.codec="opus",o.info.sampleRate=at;else if(w==="flac")o.info.codec="flac";else if(w==="ulaw")o.info.codec="ulaw";else if(w==="alaw")o.info.codec="alaw";else if(w==="ac-3")o.info.codec="ac3";else if(w==="ec-3")o.info.codec="eac3";else if(w==="twos")g===8?o.info.codec="pcm-s8":g===16?o.info.codec=o.info.pcmLittleEndian?"pcm-s16":"pcm-s16be":(console.warn(`Unsupported sample size ${g} for codec 'twos'.`),o.info.codec=null);else if(w==="sowt")g===8?o.info.codec="pcm-s8":g===16?o.info.codec="pcm-s16":(console.warn(`Unsupported sample size ${g} for codec 'sowt'.`),o.info.codec=null);else if(w==="raw ")o.info.codec="pcm-u8";else if(w==="in24")o.info.codec=o.info.pcmLittleEndian?"pcm-s24":"pcm-s24be";else if(w==="in32")o.info.codec=o.info.pcmLittleEndian?"pcm-s32":"pcm-s32be";else if(w==="fl32")o.info.codec=o.info.pcmLittleEndian?"pcm-f32":"pcm-f32be";else if(w==="fl64")o.info.codec=o.info.pcmLittleEndian?"pcm-f64":"pcm-f64be";else if(w==="ipcm"){let T=o.info.pcmSampleSize;o.info.pcmLittleEndian?T===16?o.info.codec="pcm-s16":T===24?o.info.codec="pcm-s24":T===32?o.info.codec="pcm-s32":(console.warn(`Invalid ipcm sample size ${T}.`),o.info.codec=null):T===16?o.info.codec="pcm-s16be":T===24?o.info.codec="pcm-s24be":T===32?o.info.codec="pcm-s32be":(console.warn(`Invalid ipcm sample size ${T}.`),o.info.codec=null)}else if(w==="fpcm"){let T=o.info.pcmSampleSize;o.info.pcmLittleEndian?T===32?o.info.codec="pcm-f32":T===64?o.info.codec="pcm-f64":(console.warn(`Invalid fpcm sample size ${T}.`),o.info.codec=null):T===32?o.info.codec="pcm-f32be":T===64?o.info.codec="pcm-f64be":(console.warn(`Invalid fpcm sample size ${T}.`),o.info.codec=null)}else if(w==="lpcm"&&k!==null){let T=g+7>>3,S=!!(k&1),x=!!(k&2),P=k&4?-1:0;g>0&&g<=64&&(S?g===32&&(o.info.codec=x?"pcm-f32be":"pcm-f32"):P&1<<T-1?T===1?o.info.codec="pcm-s8":T===2?o.info.codec=x?"pcm-s16be":"pcm-s16":T===3?o.info.codec=x?"pcm-s24be":"pcm-s24":T===4&&(o.info.codec=x?"pcm-s32be":"pcm-s32"):T===1&&(o.info.codec="pcm-u8")),o.info.codec===null&&console.warn("Unsupported PCM format.")}else console.warn(w===null?"Unknown encrypted audio codec due to missing frma box.":`Unsupported audio codec (sample entry type '${d.name}').`)}e.filePos=m+d.totalSize}}break;case"frma":{let o=this.currentTrack;if(!o)break;let u=re(e,4).toLowerCase();o.frmaCodecString=u}break;case"schm":{let o=this.currentTrack;if(!o)break;e.skip(4);let c=re(e,4);c==="cenc"||c==="cens"||c==="cbcs"?o.encryptionInfo={scheme:c,defaultKid:null,defaultIsProtected:null,defaultPerSampleIvSize:null,defaultConstantIv:null,defaultCryptByteBlock:null,defaultSkipByteBlock:null}:console.warn(`Unsupported encryption scheme '${c}'.`)}break;case"tenc":{let o=this.currentTrack;if(!o||!o.encryptionInfo)break;let c=O(e);e.skip(3),e.skip(1);let u=O(e);if(c>0?(o.encryptionInfo.defaultCryptByteBlock=u>>4,o.encryptionInfo.defaultSkipByteBlock=u&15):(o.encryptionInfo.defaultCryptByteBlock=0,o.encryptionInfo.defaultSkipByteBlock=0),o.encryptionInfo.defaultIsProtected=O(e)!==0,o.encryptionInfo.defaultPerSampleIvSize=O(e),o.encryptionInfo.defaultKid=nr(B(e,16)),o.encryptionInfo.defaultIsProtected&&o.encryptionInfo.defaultPerSampleIvSize===0){let l=O(e),m=new Uint8Array(16);m.set(B(e,l),0),o.encryptionInfo.defaultConstantIv=m}}break;case"avcC":{let o=this.currentTrack;if(!o)break;h(o.info),o.info.codecDescription=B(e,i.contentSize)}break;case"hvcC":{let o=this.currentTrack;if(!o)break;h(o.info),o.info.codecDescription=B(e,i.contentSize)}break;case"vpcC":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="video"),e.skip(4);let c=O(e),u=O(e),l=O(e),m=l>>4,d=l>>1&7,f=l&1,p=O(e),b=O(e),g=O(e);o.info.vp9CodecInfo={profile:c,level:u,bitDepth:m,chromaSubsampling:d,videoFullRangeFlag:f,colourPrimaries:p,transferCharacteristics:b,matrixCoefficients:g}}break;case"av1C":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="video"),e.skip(1);let c=O(e),u=c>>5,l=c&31,m=O(e),d=m>>7,f=m>>6&1,p=m>>5&1,b=m>>4&1,g=m>>3&1,y=m>>2&1,k=m&3,w=u===2&&f?p?12:10:f?10:8;o.info.av1CodecInfo={profile:u,level:l,tier:d,bitDepth:w,monochrome:b,chromaSubsamplingX:g,chromaSubsamplingY:y,chromaSamplePosition:k}}break;case"colr":{let o=this.currentTrack;if(!o||(h(o.info?.type==="video"),re(e,4)!=="nclx"))break;let u=se(e),l=se(e),m=se(e),d=!!(O(e)&128);o.info.colorSpace={primaries:Or[u],transfer:Dr[l],matrix:Vr[m],fullRange:d}}break;case"pasp":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="video");let c=F(e),u=F(e);c>0&&u>0&&(c>u?o.info.squarePixelWidth=Math.round(o.info.width*c/u):o.info.squarePixelHeight=Math.round(o.info.height*u/c))}break;case"wave":this.readContiguousBoxes(e.slice(a,i.contentSize));break;case"esds":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="audio"),e.skip(4);let c=O(e);h(c===3),Ha(e),e.skip(2);let u=O(e),l=(u&128)!==0,m=(u&64)!==0,d=(u&32)!==0;if(l&&e.skip(2),m){let y=O(e);e.skip(y)}d&&e.skip(2);let f=O(e);h(f===4);let p=Ha(e),b=e.filePos,g=O(e);if(g===64||g===103?(o.info.codec="aac",o.info.aacCodecInfo={isMpeg2:g===103,objectType:null}):g===105||g===107?o.info.codec="mp3":g===221?o.info.codec="vorbis":console.warn(`Unsupported audio codec (objectTypeIndication ${g}) - discarding track.`),e.skip(12),p>e.filePos-b){let y=O(e);h(y===5);let k=Ha(e);if(o.info.codecDescription=B(e,k),o.info.codec==="aac"){let w=At(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;h(o.info?.type==="audio"),o.info.pcmLittleEndian=!!(se(e)&255)}break;case"pcmC":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="audio"),e.skip(4);let c=O(e);o.info.pcmLittleEndian=!!(c&1),o.info.pcmSampleSize=O(e)}break;case"dOps":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="audio"),e.skip(1);let c=O(e),u=se(e),l=F(e),m=Tn(e),d=O(e),f;d!==0?f=B(e,2+c):f=new Uint8Array(0);let p=new Uint8Array(19+f.byteLength),b=new DataView(p.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,l,!0),b.setInt16(16,m,!0),b.setUint8(18,d),p.set(f,19),o.info.codecDescription=p,o.info.numberOfChannels=c}break;case"dfLa":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="audio"),e.skip(4);let c=127,u=128,l=e.filePos;for(;e.filePos<s;){let b=O(e),g=lt(e);if((b&c)===0){e.skip(10);let k=F(e),w=k>>>12,T=(k>>9&7)+1;o.info.sampleRate=w,o.info.numberOfChannels=T,e.skip(20)}else e.skip(g);if(b&u)break}let m=e.filePos;e.filePos=l;let d=B(e,m-l),f=new Uint8Array(4+d.byteLength);new DataView(f.buffer).setUint32(0,1716281667,!1),f.set(d,4),o.info.codecDescription=f}break;case"dac3":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="audio");let c=B(e,3),u=new W(c),l=u.readBits(2);u.skipBits(8);let m=u.readBits(3),d=u.readBits(1);l<3&&(o.info.sampleRate=Kr[l]),o.info.numberOfChannels=gn[m]+d}break;case"dec3":{let o=this.currentTrack;if(!o)break;h(o.info?.type==="audio");let c=B(e,i.contentSize),u=pl(c);if(!u){console.warn("Invalid dec3 box contents, ignoring.");break}let l=Va(u);l!==null&&(o.info.sampleRate=l),o.info.numberOfChannels=Ua(u)}break;case"stts":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=F(e),u=0,l=0;for(let m=0;m<c;m++){let d=F(e),f=F(e);o.sampleTable.sampleTimingEntries.push({startIndex:u,startDecodeTimestamp:l,count:d,delta:f}),u+=d,l+=d*f}}break;case"ctts":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=F(e),u=0;for(let l=0;l<c;l++){let m=F(e),d=Qt(e);o.sampleTable.sampleCompositionTimeOffsets.push({startIndex:u,count:m,offset:d}),u+=m}}break;case"stsz":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=F(e),u=F(e);if(c===0)for(let l=0;l<u;l++){let m=F(e);o.sampleTable.sampleSizes.push(m)}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=O(e),u=F(e),l=B(e,Math.ceil(u*c/8)),m=new W(l);for(let d=0;d<u;d++){let f=m.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=F(e);for(let u=0;u<c;u++){let l=F(e)-1;o.sampleTable.keySampleIndices.push(l)}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=F(e);for(let l=0;l<c;l++){let m=F(e)-1,d=F(e),f=F(e);o.sampleTable.sampleToChunk.push({startSampleIndex:-1,startChunkIndex:m,samplesPerChunk:d,sampleDescriptionIndex:f})}let u=0;for(let l=0;l<o.sampleTable.sampleToChunk.length;l++)if(o.sampleTable.sampleToChunk[l].startSampleIndex=u,l<o.sampleTable.sampleToChunk.length-1){let d=o.sampleTable.sampleToChunk[l+1].startChunkIndex-o.sampleTable.sampleToChunk[l].startChunkIndex;u+=d*o.sampleTable.sampleToChunk[l].samplesPerChunk}}break;case"stco":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=F(e);for(let u=0;u<c;u++){let l=F(e);o.sampleTable.chunkOffsets.push(l)}}break;case"co64":{let o=this.currentTrack;if(!o||!o.sampleTable)break;e.skip(4);let c=F(e);for(let u=0;u<c;u++){let l=Oe(e);o.sampleTable.chunkOffsets.push(l)}}break;case"mvex":this.isFragmented=!0,this.readContiguousBoxes(e.slice(a,i.contentSize));break;case"mehd":{let o=O(e);e.skip(3);let c=o===1?Oe(e):F(e);this.movieDurationInTimescale=c}break;case"trex":{e.skip(4);let o=F(e),c=F(e),u=F(e),l=F(e),m=F(e);this.fragmentTrackDefaults.push({trackId:o,defaultSampleDescriptionIndex:c,defaultSampleDuration:u,defaultSampleSize:l,defaultSampleFlags:m})}break;case"tfra":{let o=O(e);e.skip(3);let c=F(e),u=this.tracks.find(w=>w.id===c);if(!u)break;let l=F(e),m=(l&48)>>4,d=(l&12)>>2,f=l&3,p=[O,se,lt,F],b=p[m],g=p[d],y=p[f],k=F(e);for(let w=0;w<k;w++){let T=o===1?Oe(e):F(e),S=o===1?Oe(e):F(e);b(e),g(e),y(e),u.fragmentLookupTable.push({timestamp:T,moofOffset:S})}u.fragmentLookupTable.sort((w,T)=>w.timestamp-T.timestamp);for(let w=0;w<u.fragmentLookupTable.length-1;w++){let T=u.fragmentLookupTable[w],S=u.fragmentLookupTable[w+1];T.timestamp===S.timestamp&&(u.fragmentLookupTable.splice(w+1,1),w--)}}break;case"moof":this.currentFragment={moofOffset:r,moofSize:i.totalSize,implicitBaseDataOffset:r,trackData:new Map,psshBoxes:[]},this.readContiguousBoxes(e.slice(a,i.contentSize)),this.lastReadFragment=this.currentFragment,this.currentFragment=null;break;case"traf":if(h(this.currentFragment),this.readContiguousBoxes(e.slice(a,i.contentSize)),this.currentTrack){let o=this.currentFragment.trackData.get(this.currentTrack.id);if(o){this.currentFragment.implicitBaseDataOffset=o.currentOffset,o.presentationTimestamps=o.samples.map((m,d)=>({presentationTimestamp:m.presentationTimestamp,sampleIndex:d})).sort((m,d)=>m.presentationTimestamp-d.presentationTimestamp);for(let m=0;m<o.presentationTimestamps.length;m++){let d=o.presentationTimestamps[m],f=o.samples[d.sampleIndex];if(o.firstKeyFrameTimestamp===null&&f.isKeyFrame&&(o.firstKeyFrameTimestamp=f.presentationTimestamp),m<o.presentationTimestamps.length-1){let b=o.presentationTimestamps[m+1].presentationTimestamp-d.presentationTimestamp;f.duration=b}}let c=o.samples[o.presentationTimestamps[0].sampleIndex],u=o.samples[X(o.presentationTimestamps).sampleIndex];o.startTimestamp=c.presentationTimestamp,o.endTimestamp=u.presentationTimestamp+u.duration;let{currentFragmentState:l}=this.currentTrack;h(l),l.startTimestamp!==null&&(Jo(o,l.startTimestamp),o.startTimestampIsFinal=!0),l.encryptionAuxInfo&&!o.samples[0].encryption&&(o.encryptionAuxInfo=l.encryptionAuxInfo)}this.currentTrack.currentFragmentState=null,this.currentTrack=null}break;case"pssh":{if(this.input._formatOptions.isobmff?._suppressPsshParsing)break;let o=Na(B(e,i.contentSize));this.currentFragment?this.currentFragment.psshBoxes.push(o):this.currentTrack||this.psshBoxes.push(o)}break;case"tfhd":{h(this.currentFragment),e.skip(1);let o=lt(e),c=!!(o&1),u=!!(o&2),l=!!(o&8),m=!!(o&16),d=!!(o&32),f=!!(o&65536),p=!!(o&131072),b=F(e),g=this.tracks.find(k=>k.id===b);if(!g)break;let y=this.fragmentTrackDefaults.find(k=>k.trackId===b);this.currentTrack=g,g.currentFragmentState={baseDataOffset:this.currentFragment.implicitBaseDataOffset,sampleDescriptionIndex:y?.defaultSampleDescriptionIndex??null,defaultSampleDuration:y?.defaultSampleDuration??null,defaultSampleSize:y?.defaultSampleSize??null,defaultSampleFlags:y?.defaultSampleFlags??null,startTimestamp:null,encryptionAuxInfo:null},c?g.currentFragmentState.baseDataOffset=Oe(e):p&&(g.currentFragmentState.baseDataOffset=this.currentFragment.moofOffset),u&&(g.currentFragmentState.sampleDescriptionIndex=F(e)),l&&(g.currentFragmentState.defaultSampleDuration=F(e)),m&&(g.currentFragmentState.defaultSampleSize=F(e)),d&&(g.currentFragmentState.defaultSampleFlags=F(e)),f&&(g.currentFragmentState.defaultSampleDuration=0)}break;case"tfdt":{let o=this.currentTrack;if(!o)break;h(o.currentFragmentState);let c=O(e);e.skip(3);let u=c===0?F(e):Oe(e);o.currentFragmentState.startTimestamp=u}break;case"trun":{let o=this.currentTrack;if(!o)break;h(this.currentFragment),h(o.currentFragmentState);let c=O(e),u=lt(e),l=!!(u&1),m=!!(u&4),d=!!(u&256),f=!!(u&512),p=!!(u&1024),b=!!(u&2048),g=F(e),y=null;l&&(y=Qt(e));let k=null;m&&(k=F(e));let w;if(this.currentFragment.trackData.has(o.id)?(w=this.currentFragment.trackData.get(o.id),y!==null&&(w.currentOffset=o.currentFragmentState.baseDataOffset+y)):(w={track:o,currentTimestamp:0,currentOffset:o.currentFragmentState.baseDataOffset+(y??0),startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,samples:[],presentationTimestamps:[],startTimestampIsFinal:!1,encryptionAuxInfo:null},this.currentFragment.trackData.set(o.id,w)),g===0){this.currentFragment.implicitBaseDataOffset=w.currentOffset;break}for(let T=0;T<g;T++){let S;d?S=F(e):(h(o.currentFragmentState.defaultSampleDuration!==null),S=o.currentFragmentState.defaultSampleDuration);let x;f?x=F(e):(h(o.currentFragmentState.defaultSampleSize!==null),x=o.currentFragmentState.defaultSampleSize);let P;p?P=F(e):(h(o.currentFragmentState.defaultSampleFlags!==null),P=o.currentFragmentState.defaultSampleFlags),T===0&&k!==null&&(P=k);let A=0;b&&(c===0?A=F(e):A=Qt(e));let C=!(P&65536);w.samples.push({presentationTimestamp:w.currentTimestamp+A,duration:S,byteOffset:w.currentOffset,byteSize:x,isKeyFrame:C,encryption:null}),w.currentOffset+=x,w.currentTimestamp+=S}}break;case"saiz":{let o=this.currentTrack;if(!o||!o.encryptionInfo)break;if(e.skip(1),lt(e)&1){let f=re(e,4),p=F(e);if(f!==o.encryptionInfo.scheme||p!==0)break}let u=O(e),l=F(e),m=null;u===0&&l>0&&(m=B(e,l));let d=Tl(o);d.defaultSampleInfoSize=u,d.sampleSizes=m,d.sampleCount=l}break;case"saio":{let o=this.currentTrack;if(!o||!o.encryptionInfo)break;let c=O(e);if(lt(e)&1){let f=re(e,4),p=F(e);if(f!==o.encryptionInfo.scheme||p!==0)break}let l=F(e);if(l===0)break;l>1&&console.warn("Multiple saio entries are not supported; using the first offset only.");let m=c===0?F(e):Number(Oe(e));this.currentFragment&&(m+=this.currentFragment.moofOffset);let d=Tl(o);d.offset=m}break;case"senc":{let o=this.currentTrack;if(!o||!o.encryptionInfo)break;h(this.currentFragment);let c=this.currentFragment.trackData.get(o.id);if(!c)break;e.skip(1);let l=!!(lt(e)&2),m=F(e),d=o.encryptionInfo.defaultPerSampleIvSize;h(d!==null);for(let f=0;f<Math.min(m,c.samples.length);f++){let p=new Uint8Array(16);d>0?p.set(B(e,d),0):p.set(o.encryptionInfo.defaultConstantIv,0);let b=null;if(l){let y=se(e);b=[];for(let k=0;k<y;k++){let w=se(e),T=F(e);b.push({clearLen:w,protectedLen:T})}}let g=c.samples[f];g.encryption={iv:p,subsamples:b}}}break;case"udta":{let o=this.iterateContiguousBoxes(e.slice(a,i.contentSize));for(let{boxInfo:c,slice:u}of o){if(c.name!=="meta"&&!this.currentTrack){let l=u.filePos;this.metadataTags.raw??={},c.name[0]==="\xA9"?this.metadataTags.raw[c.name]??=ct(u):this.metadataTags.raw[c.name]??=B(u,c.contentSize),u.filePos=l}switch(c.name){case"meta":u.skip(-c.headerSize),this.traverseBox(u);break;case"\xA9nam":case"name":this.currentTrack?this.currentTrack.name=me.decode(B(u,c.contentSize)):this.metadataTags.title??=ct(u);break;case"\xA9des":this.currentTrack||(this.metadataTags.description??=ct(u));break;case"\xA9ART":this.currentTrack||(this.metadataTags.artist??=ct(u));break;case"\xA9alb":this.currentTrack||(this.metadataTags.album??=ct(u));break;case"albr":this.currentTrack||(this.metadataTags.albumArtist??=ct(u));break;case"\xA9gen":this.currentTrack||(this.metadataTags.genre??=ct(u));break;case"\xA9day":if(!this.currentTrack){let l=new Date(ct(u));Number.isNaN(l.getTime())||(this.metadataTags.date??=l)}break;case"\xA9cmt":this.currentTrack||(this.metadataTags.comment??=ct(u));break;case"\xA9lyr":this.currentTrack||(this.metadataTags.lyrics??=ct(u));break}}}break;case"meta":{if(this.currentTrack)break;let c=F(e)!==0;this.currentMetadataKeys=new Map,c?this.readContiguousBoxes(e.slice(a,i.contentSize)):this.readContiguousBoxes(e.slice(a+4,i.contentSize-4)),this.currentMetadataKeys=null}break;case"keys":{if(!this.currentMetadataKeys)break;e.skip(4);let o=F(e);for(let c=0;c<o;c++){let u=F(e);e.skip(4);let l=me.decode(B(e,u-8));this.currentMetadataKeys.set(c+1,l)}}break;case"ilst":{if(!this.currentMetadataKeys)break;let o=this.iterateContiguousBoxes(e.slice(a,i.contentSize));for(let{boxInfo:c,slice:u}of o){let l=c.name,m=(l.charCodeAt(0)<<24)+(l.charCodeAt(1)<<16)+(l.charCodeAt(2)<<8)+l.charCodeAt(3);this.currentMetadataKeys.has(m)&&(l=this.currentMetadataKeys.get(m));let d=hl(u);switch(this.metadataTags.raw??={},this.metadataTags.raw[l]??=d,l){case"\xA9nam":case"titl":case"com.apple.quicktime.title":case"title":typeof d=="string"&&(this.metadataTags.title??=d);break;case"\xA9des":case"desc":case"dscp":case"com.apple.quicktime.description":case"description":typeof d=="string"&&(this.metadataTags.description??=d);break;case"\xA9ART":case"com.apple.quicktime.artist":case"artist":typeof d=="string"&&(this.metadataTags.artist??=d);break;case"\xA9alb":case"albm":case"com.apple.quicktime.album":case"album":typeof d=="string"&&(this.metadataTags.album??=d);break;case"aART":case"album_artist":typeof d=="string"&&(this.metadataTags.albumArtist??=d);break;case"\xA9cmt":case"com.apple.quicktime.comment":case"comment":typeof d=="string"&&(this.metadataTags.comment??=d);break;case"\xA9gen":case"gnre":case"com.apple.quicktime.genre":case"genre":typeof d=="string"&&(this.metadataTags.genre??=d);break;case"\xA9lyr":case"lyrics":typeof d=="string"&&(this.metadataTags.lyrics??=d);break;case"\xA9day":case"rldt":case"com.apple.quicktime.creationdate":case"date":if(typeof d=="string"){let f=new Date(d);Number.isNaN(f.getTime())||(this.metadataTags.date??=f)}break;case"covr":case"com.apple.quicktime.artwork":d instanceof Le?(this.metadataTags.images??=[],this.metadataTags.images.push({data:d.data,kind:"coverFront",mimeType:d.mimeType})):d instanceof Uint8Array&&(this.metadataTags.images??=[],this.metadataTags.images.push({data:d,kind:"coverFront",mimeType:"image/*"}));break;case"track":if(typeof d=="string"){let f=d.split("/"),p=Number.parseInt(f[0],10),b=f[1]&&Number.parseInt(f[1],10);Number.isInteger(p)&&p>0&&(this.metadataTags.trackNumber??=p),b&&Number.isInteger(b)&&b>0&&(this.metadataTags.tracksTotal??=b)}break;case"trkn":if(d instanceof Uint8Array&&d.length>=6){let f=V(d),p=f.getUint16(2,!1),b=f.getUint16(4,!1);p>0&&(this.metadataTags.trackNumber??=p),b>0&&(this.metadataTags.tracksTotal??=b)}break;case"disc":case"disk":if(d instanceof Uint8Array&&d.length>=6){let f=V(d),p=f.getUint16(2,!1),b=f.getUint16(4,!1);p>0&&(this.metadataTags.discNumber??=p),b>0&&(this.metadataTags.discsTotal??=b)}break}}}break}return e.filePos=s,!0}},Ga=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,e=this.internalTrack.trackBacking.getType(),r=0;for(let i of t.tracks)if(i.trackBacking.getType()===e&&r++,i===this.internalTrack)break;return r}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.internalCodecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.timescale}isRelativeToUnixEpoch(){return!1}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){let t=this.internalTrack;return t.durationInMediaTimescale<=0?null:(h(t.trackBacking),((await t.trackBacking.getFirstPacket({metadataOnly:!0}))?.timestamp??0)+t.durationInMediaTimescale/t.timescale)}async getLiveRefreshInterval(){return null}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 Vt(t*this.internalTrack.timescale)+this.internalTrack.editListOffset}async getPacket(t,e){let r=this.mapTimestampIntoTimescale(t),i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=ec(i,r),s=await this.fetchPacketForSampleIndex(a,e);return!kl(i)||!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=H(c.presentationTimestamps,r,d=>d.presentationTimestamp),l=u!==-1?c.presentationTimestamps[u].sampleIndex:-1,m=u!==-1&&r<c.endTimestamp;return{sampleIndex:l,correctSampleFound:m}},r,r,e)}async getNextPacket(t,e){let r=this.packetToSampleIndex.get(t);if(r!==void 0)return this.fetchPacketForSampleIndex(r+1,e);let i=this.packetToFragmentLocation.get(t);if(i===void 0)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(i.fragment,a=>{if(a===i.fragment){let s=a.trackData.get(this.internalTrack.id);if(i.sampleIndex+1<s.samples.length)return{sampleIndex:i.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),i=this.internalTrack.demuxer.getSampleTableForTrack(this.internalTrack),a=Lm(i,r),s=await this.fetchPacketForSampleIndex(a,e);return!kl(i)||!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=ar(c.presentationTimestamps,d=>c.samples[d.sampleIndex].isKeyFrame&&d.presentationTimestamp<=r),l=u!==-1?c.presentationTimestamps[u].sampleIndex:-1,m=u!==-1&&r<c.endTimestamp;return{sampleIndex:l,correctSampleFound:m}},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=Hm(a,r);return this.fetchPacketForSampleIndex(s,e)}let i=this.packetToFragmentLocation.get(t);if(i===void 0)throw new Error("Packet was not created from this track.");return this.performFragmentedLookup(i.fragment,a=>{if(a===i.fragment){let o=a.trackData.get(this.internalTrack.id).samples.findIndex((c,u)=>c.isKeyFrame&&u>i.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 h(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),i=Wm(r,t);if(!i)return null;let a;if(e.metadataOnly)a=de;else{let u=this.internalTrack.demuxer.reader.requestSlice(i.sampleOffset,i.sampleSize);if(u instanceof Promise&&(u=await u),!u)return null;if(a=B(u,i.sampleSize),this.internalTrack.encryptionAuxInfo){h(this.internalTrack.encryptionInfo);let l=await Al(this.internalTrack.demuxer.reader,this.internalTrack.encryptionInfo,this.internalTrack.encryptionAuxInfo);t<l.length&&(a=await wl(this.internalTrack,l[t],a,null))}}let s=(i.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,o=i.duration/this.internalTrack.timescale,c=new Q(a,i.isKeyFrame?"key":"delta",s,o,t,i.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];h(a);let s;if(r.metadataOnly)s=de;else{let l=this.internalTrack.demuxer.reader.requestSlice(a.byteOffset,a.byteSize);if(l instanceof Promise&&(l=await l),!l)return null;s=B(l,a.byteSize),a.encryption&&(s=await wl(this.internalTrack,a.encryption,s,t))}let o=(a.presentationTimestamp-this.internalTrack.editListOffset)/this.internalTrack.timescale,c=a.duration/this.internalTrack.timescale,u=new Q(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,i,a){let s=this.internalTrack.demuxer,o=null,c=null,u=-1;if(t){let{sampleIndex:g,correctSampleFound:y}=e(t);if(y)return this.fetchPacketInFragment(t,g,a);g!==-1&&(c=t,u=g)}let l=H(this.internalTrack.fragmentLookupTable,r,g=>g.timestamp),m=l!==-1?this.internalTrack.fragmentLookupTable[l]:null,d=H(this.internalTrack.fragmentPositionCache,r,g=>g.startTimestamp),f=d!==-1?this.internalTrack.fragmentPositionCache[d]:null,p=Math.max(m?.moofOffset??0,f?.moofOffset??0)||null,b;for(t?p===null||t.moofOffset>=p?(b=t.moofOffset+t.moofSize,o=t):b=p:b=p??0;;){if(o){let w=o.trackData.get(this.internalTrack.id);if(w&&w.startTimestamp>i)break}let g=s.reader.requestSliceRange(b,ot,Gt);if(g instanceof Promise&&(g=await g),!g)break;let y=b,k=Kt(g);if(!k)break;if(k.name==="moof"){o=await s.readFragment(y);let{sampleIndex:w,correctSampleFound:T}=e(o);if(T)return this.fetchPacketInFragment(o,w,a);w!==-1&&(c=o,u=w)}b=y+k.totalSize}if(m&&(!c||c.moofOffset<m.moofOffset)){let g=this.internalTrack.fragmentLookupTable[l-1];h(!g||g.timestamp<m.timestamp);let y=g?.timestamp??-1/0;return this.performFragmentedLookup(null,e,y,i,a)}return c?this.fetchPacketInFragment(c,u,a):null}},Ka=class extends Ga{constructor(e){super(e);this.decoderConfigPromise=null;this.internalTrack=e}getType(){return"video"}getCodec(){return this.internalTrack.info.codec}getCodedWidth(){return this.internalTrack.info.width}getCodedHeight(){return this.internalTrack.info.height}getSquarePixelWidth(){return this.internalTrack.info.squarePixelWidth}getSquarePixelHeight(){return this.internalTrack.info.squarePixelHeight}getRotation(){return this.internalTrack.rotation}async getColorSpace(){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 r=await this.getFirstPacket({});this.internalTrack.info.vp9CodecInfo=r&&Fa(r.data)}else if(this.internalTrack.info.codec==="av1"&&!this.internalTrack.info.av1CodecInfo){let r=await this.getFirstPacket({});this.internalTrack.info.av1CodecInfo=r&&Ma(r.data)}let e={codec:gi(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};return(this.internalTrack.info.width!==this.internalTrack.info.squarePixelWidth||this.internalTrack.info.height!==this.internalTrack.info.squarePixelHeight)&&(e.displayAspectWidth=this.internalTrack.info.squarePixelWidth,e.displayAspectHeight=this.internalTrack.info.squarePixelHeight),e})():null}},Qa=class extends Ga{constructor(e){super(e);this.decoderConfig=null;this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfig??={codec:bi(this.internalTrack.info),numberOfChannels:this.internalTrack.info.numberOfChannels,sampleRate:this.internalTrack.info.sampleRate,description:this.internalTrack.info.codecDescription??void 0}:null}},ec=(n,t)=>{if(n.presentationTimestamps){let e=H(n.presentationTimestamps,t,r=>r.presentationTimestamp);return e===-1?-1:n.presentationTimestamps[e].sampleIndex}else{let e=H(n.sampleTimingEntries,t,i=>i.startDecodeTimestamp);if(e===-1)return-1;let r=n.sampleTimingEntries[e];return r.startIndex+Math.min(Math.floor((t-r.startDecodeTimestamp)/r.delta),r.count-1)}},Lm=(n,t)=>{if(!n.keySampleIndices)return ec(n,t);if(n.presentationTimestamps){let e=H(n.presentationTimestamps,t,r=>r.presentationTimestamp);if(e===-1)return-1;for(let r=e;r>=0;r--){let i=n.presentationTimestamps[r].sampleIndex;if(Dt(n.keySampleIndices,i,s=>s)!==-1)return i}return-1}else{let e=ec(n,t),r=H(n.keySampleIndices,e,i=>i);return n.keySampleIndices[r]??-1}},Wm=(n,t)=>{let e=H(n.sampleTimingEntries,t,y=>y.startIndex),r=n.sampleTimingEntries[e];if(!r||r.startIndex+r.count<=t)return null;let a=r.startDecodeTimestamp+(t-r.startIndex)*r.delta,s=H(n.sampleCompositionTimeOffsets,t,y=>y.startIndex),o=n.sampleCompositionTimeOffsets[s];o&&t-o.startIndex<o.count&&(a+=o.offset);let c=n.sampleSizes[Math.min(t,n.sampleSizes.length-1)],u=H(n.sampleToChunk,t,y=>y.startSampleIndex),l=n.sampleToChunk[u];h(l);let m=l.startChunkIndex+Math.floor((t-l.startSampleIndex)/l.samplesPerChunk),d=n.chunkOffsets[m],f=l.startSampleIndex+(m-l.startChunkIndex)*l.samplesPerChunk,p=0,b=d;if(n.sampleSizes.length===1)b+=c*(t-f),p+=c*l.samplesPerChunk;else for(let y=f;y<f+l.samplesPerChunk;y++){let k=n.sampleSizes[y];y<t&&(b+=k),p+=k}let g=r.delta;if(n.presentationTimestamps){let y=n.presentationTimestampIndexMap[t];h(y!==void 0),y<n.presentationTimestamps.length-1&&(g=n.presentationTimestamps[y+1].presentationTimestamp-a)}return{presentationTimestamp:a,duration:g,sampleOffset:b,sampleSize:c,chunkOffset:d,chunkSize:p,isKeyFrame:n.keySampleIndices?Dt(n.keySampleIndices,t,y=>y)!==-1:!0}},Hm=(n,t)=>{if(!n.keySampleIndices)return t+1;let e=H(n.keySampleIndices,t,r=>r);return n.keySampleIndices[e+1]??-1},Jo=(n,t)=>{n.startTimestamp+=t,n.endTimestamp+=t;for(let e of n.samples)e.presentationTimestamp+=t;for(let e of n.presentationTimestamps)e.presentationTimestamp+=t},qm=n=>{let[t,e]=n,r=Math.atan2(e,t);return Number.isFinite(r)?r*(180/Math.PI):0},kl=n=>n.sampleSizes.length===0,Tl=n=>n.currentFragmentState?n.currentFragmentState.encryptionAuxInfo??={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null}:n.encryptionAuxInfo??={defaultSampleInfoSize:0,sampleSizes:null,sampleCount:0,offset:null,resolved:null},Al=async(n,t,e)=>{if(e.resolved)return e.resolved;if(e.offset===null||e.sampleCount===0)throw new Error("Incomplete saiz/saio info; cannot resolve encryption data.");let r=0;if(e.defaultSampleInfoSize>0)r=e.defaultSampleInfoSize*e.sampleCount;else{h(e.sampleSizes);for(let o=0;o<e.sampleCount;o++)r+=e.sampleSizes[o]}let i=n.requestSlice(e.offset,r);if(i instanceof Promise&&(i=await i),!i)throw new Error("Failed to read auxiliary encryption info.");let a=t.defaultPerSampleIvSize;h(a!==null);let s=[];for(let o=0;o<e.sampleCount;o++){let c=e.defaultSampleInfoSize>0?e.defaultSampleInfoSize:e.sampleSizes[o],u=new Uint8Array(16);a>0?u.set(B(i,a),0):u.set(t.defaultConstantIv,0);let l=null;if(c>a){let m=se(i);l=[];for(let d=0;d<m;d++){let f=se(i),p=F(i);l.push({clearLen:f,protectedLen:p})}}s.push({iv:u,subsamples:l})}return e.resolved=s,s},wl=async(n,t,e,r)=>{h(n.encryptionInfo);let i=n.encryptionInfo;h(i.defaultKid!==null);let a=i.defaultKid,s,o=n.demuxer.decryptionKeyCache.get(a);if(o)s=await o;else{if(!n.demuxer.input._formatOptions.isobmff?.resolveKeyId)throw new Error("Encrypted media samples encountered. To decrypt them, please provide a callback for InputOptions.formatOptions.isobmff.resolveKeyId.");let c=(async()=>{let u=n.demuxer.psshBoxes;if(r){u=[...u,...r.psshBoxes].filter(m=>m.keyIds===null||m.keyIds.includes(a));for(let m=0;m<u.length-1;m++)for(let d=m+1;d<u.length;d++)La(u[m],u[d])&&(u.splice(d,1),d--)}let l=await n.demuxer.input._formatOptions.isobmff.resolveKeyId({keyId:a,psshBoxes:u});if(!(typeof l=="string"&&l.length===32&&xu.test(l)||l instanceof Uint8Array&&l.byteLength===16))throw new TypeError("resolveKeyId must return a 32-character hex string or a 16-byte Uint8Array containing the decryption key.");return l instanceof Uint8Array?l:Pu(l)})();n.demuxer.decryptionKeyCache.set(a,c),s=await c}return i.scheme==="cenc"||i.scheme==="cens"?Gm(s,i,t,e):Km(s,i,t,e)},Gm=async(n,t,e,r)=>{let i=new Uint8Array(16);i.set(e.iv,0);let a=await crypto.subtle.importKey("raw",n,{name:"AES-CTR"},!1,["decrypt"]),s=async p=>{let b=await crypto.subtle.decrypt({name:"AES-CTR",counter:i,length:64},a,p);return new Uint8Array(b)};if(!e.subsamples)return s(r);h(t.defaultCryptByteBlock!==null&&t.defaultSkipByteBlock!==null);let o=xl(e.subsamples,t.defaultCryptByteBlock,t.defaultSkipByteBlock),c=0;for(let p of o)for(let b of p.perSubsample)c+=b.length;let u=new Uint8Array(c),l=0;for(let p of o)for(let b of p.perSubsample)u.set(r.subarray(b.offset,b.offset+b.length),l),l+=b.length;let m=await s(u),d=new Uint8Array(r),f=0;for(let p of o)for(let b of p.perSubsample)d.set(m.subarray(f,f+b.length),b.offset),f+=b.length;return d},Km=(n,t,e,r)=>{let i=new kn;i.init({key:n,iv:e.iv});let a=t.defaultCryptByteBlock,s=t.defaultSkipByteBlock;if(h(a!==null&&s!==null),!e.subsamples){let l=new Uint8Array(r),m=Math.floor(r.length/16);for(let d=0;d<m;d++){let f=d*16;i.in.set(r.subarray(f,f+16)),i.decrypt(),l.set(i.out,f)}return l}if(a===0&&s===0)throw new Error("cbcs with subsamples requires pattern encryption.");let o=new Uint8Array(r),c=xl(e.subsamples,a,s),u=new DataView(e.iv.buffer,e.iv.byteOffset,16);for(let l of c){i.iv[0]=u.getUint32(0,!1),i.iv[1]=u.getUint32(4,!1),i.iv[2]=u.getUint32(8,!1),i.iv[3]=u.getUint32(12,!1);for(let m of l.perSubsample){let d=m.length/16;for(let f=0;f<d;f++){let p=m.offset+f*16;i.in.set(r.subarray(p,p+16)),i.decrypt(),o.set(i.out,p)}}}return o},xl=(n,t,e)=>{let r=[],i=t!==0||e!==0,a=0;for(let s of n){a+=s.clearLen;let o=[];if(!i)s.protectedLen>0&&o.push({offset:a,length:s.protectedLen}),a+=s.protectedLen;else{let c=s.protectedLen,u=a;for(;c>0&&!(c<16*t);){let l=16*t;o.push({offset:u,length:l}),u+=l,c-=l;let m=Math.min(16*e,c);u+=m,c-=m}a+=s.protectedLen}r.push({perSubsample:o})}return r};var Pi=class{constructor(t){this.value=t}},Ci=class{constructor(t){this.value=t}},wn=class{constructor(t){this.value=t}},dt=class{constructor(t){this.value=t}};var Qm=[440786851,408125543],Ii=[290298740,357149030,524531317,374648427,475249515,423732329,272869232,307544935],Sn=[...Qm,...Ii],Cl=n=>n<256?1:n<65536?2:n<1<<24?3:n<2**32?4:n<2**40?5:6,Il=n=>n<1n<<8n?1:n<1n<<16n?2:n<1n<<24n?3:n<1n<<32n?4:n<1n<<40n?5:n<1n<<48n?6:n<1n<<56n?7:8,El=n=>n>=-64&&n<64?1:n>=-8192&&n<8192?2:n>=-(1<<20)&&n<1<<20?3:n>=-(1<<27)&&n<1<<27?4:n>=-(2**34)&&n<2**34?5:6,jm=n=>{if(n<127)return 1;if(n<16383)return 2;if(n<(1<<21)-1)return 3;if(n<(1<<28)-1)return 4;if(n<2**35-1)return 5;if(n<2**42-1)return 6;throw new Error("EBML varint size not supported "+n)},Xa=class{constructor(t){this.writer=t;this.helper=new Uint8Array(8);this.helperView=new DataView(this.helper.buffer);this.offsets=new WeakMap;this.dataOffsets=new 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1:this.helperView.setUint8(r++,128|t);break;case 2:this.helperView.setUint8(r++,64|t>>8),this.helperView.setUint8(r++,t);break;case 3:this.helperView.setUint8(r++,32|t>>16),this.helperView.setUint8(r++,t>>8),this.helperView.setUint8(r++,t);break;case 4:this.helperView.setUint8(r++,16|t>>24),this.helperView.setUint8(r++,t>>16),this.helperView.setUint8(r++,t>>8),this.helperView.setUint8(r++,t);break;case 5:this.helperView.setUint8(r++,8|t/2**32&7),this.helperView.setUint8(r++,t>>24),this.helperView.setUint8(r++,t>>16),this.helperView.setUint8(r++,t>>8),this.helperView.setUint8(r++,t);break;case 6:this.helperView.setUint8(r++,4|t/2**40&3),this.helperView.setUint8(r++,t/2**32|0),this.helperView.setUint8(r++,t>>24),this.helperView.setUint8(r++,t>>16),this.helperView.setUint8(r++,t>>8),this.helperView.setUint8(r++,t);break;default:throw new Error("Bad EBML varint size "+e)}this.writer.write(this.helper.subarray(0,r))}writeAsciiString(t){this.writer.write(new Uint8Array(t.split("").map(e=>e.charCodeAt(0))))}writeEBML(t){if(t!==null)if(t instanceof Uint8Array)this.writer.write(t);else if(Array.isArray(t))for(let e of t)this.writeEBML(e);else if(this.offsets.set(t,this.writer.getPos()),this.writeUnsignedInt(t.id),Array.isArray(t.data)){let e=this.writer.getPos(),r=t.size===-1?1:t.size??4;t.size===-1?this.writeByte(255):this.writer.seek(this.writer.getPos()+r);let i=this.writer.getPos();if(this.dataOffsets.set(t,i),this.writeEBML(t.data),t.size!==-1){let a=this.writer.getPos()-i,s=this.writer.getPos();this.writer.seek(e),this.writeVarInt(a,r),this.writer.seek(s)}}else if(typeof t.data=="number"){let e=t.size??Cl(t.data);this.writeVarInt(e),this.writeUnsignedInt(t.data,e)}else if(typeof t.data=="bigint"){let e=t.size??Il(t.data);this.writeVarInt(e),this.writeUnsignedBigInt(t.data,e)}else if(typeof t.data=="string")this.writeVarInt(t.data.length),this.writeAsciiString(t.data);else if(t.data instanceof 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e=(n.hasVideo?"video/":n.hasAudio?"audio/":"application/")+(n.isWebM?"webm":"x-matroska");if(n.codecStrings.length>0){let r=[...new Set(n.codecStrings.filter(Boolean))];e+=`; codecs="${r.join(", ")}"`}return e};var ac=[{id:290298740,flag:"seekHeadSeen"},{id:357149030,flag:"infoSeen"},{id:374648427,flag:"tracksSeen"},{id:475249515,flag:"cuesSeen"}],Fl=10*2**20,es=class extends pe{constructor(e){super(e);this.readMetadataPromise=null;this.segments=[];this.currentSegment=null;this.currentTrack=null;this.currentCluster=null;this.currentBlock=null;this.currentBlockAdditional=null;this.currentCueTime=null;this.currentDecodingInstruction=null;this.currentTagTargetIsMovie=!0;this.currentSimpleTagName=null;this.currentAttachedFile=null;this.isWebM=!1;this.reader=e._reader}async getTrackBackings(){return await this.readMetadata(),this.segments.flatMap(e=>e.tracks.map(r=>r.trackBacking))}async getMimeType(){await this.readMetadata();let e=await this.getTrackBackings(),r=await Promise.all(e.map(i=>i.getDecoderConfig().then(a=>a?.codec??null)));return Ja({isWebM:this.isWebM,hasVideo:this.segments.some(i=>i.tracks.some(a=>a.info?.type==="video")),hasAudio:this.segments.some(i=>i.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,De,mt);if(r instanceof Promise&&(r=await r),!r)break;let i=ft(r);if(!i)break;let a=i.id,s=i.size,o=r.filePos;if(a===440786851){Xt(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 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break}let{id:m,size:d}=l,f=c.filePos,p=ac.findIndex(b=>b.id===m);if(p!==-1){let b=ac[p].flag;this.currentSegment[b]=!0,Xt(d);let g=this.reader.requestSlice(f,d);g instanceof Promise&&(g=await g),g&&this.readContiguousElements(g)}else if(m===307544935||m===423732329){m===307544935?this.currentSegment.tagsSeen=!0:this.currentSegment.attachmentsSeen=!0,Xt(d);let b=this.reader.requestSlice(f,d);b instanceof Promise&&(b=await b),b&&this.readContiguousElements(b)}else if(m===524531317){this.currentSegment.clusterSeekStartPos=u;break}if(d===void 0)break;i=f+d}if(this.currentSegment.seekEntries.sort((c,u)=>c.segmentPosition-u.segmentPosition),this.reader.fileSize!==null)for(let c of this.currentSegment.seekEntries){let u=ac.find(b=>b.id===c.id);if(!u||this.currentSegment[u.flag])continue;let l=this.reader.requestSliceRange(e+c.segmentPosition,De,mt);if(l instanceof Promise&&(l=await l),!l)continue;let m=ft(l);if(!m)continue;let{id:d,size:f}=m;if(d!==u.id)continue;Xt(f),this.currentSegment[u.flag]=!0;let p=this.reader.requestSlice(l.filePos,f);p instanceof Promise&&(p=await p),p&&this.readContiguousElements(p)}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);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,l)=>u.time-l.time);for(let u=0;u<c.cuePoints.length-1;u++){let l=c.cuePoints[u],m=c.cuePoints[u+1];l.time===m.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 i=this.reader.requestSliceRange(e,De,mt);i instanceof Promise&&(i=await i),h(i);let a=e,s=ft(i);h(s);let o=s.id;h(o===524531317);let c=s.size,u=i.filePos;c===void 0&&(c=(await Za(this.reader,u,Sn,r.elementEndPos)).pos-u);let l=this.reader.requestSlice(u,c);l instanceof Promise&&(l=await l);let m={segment:r,elementStartPos:a,elementEndPos:u+c,dataStartPos:u,timestamp:-1,trackData:new Map};if(this.currentCluster=m,l){let d=this.readContiguousElements(l,Sn);m.elementEndPos=d}for(let[,d]of m.trackData){let f=d.track;h(d.blocks.length>0);let p=!1;for(let k=0;k<d.blocks.length;k++){let w=d.blocks[k];w.timestamp+=m.timestamp,p||=w.lacing!==0}d.presentationTimestamps=d.blocks.map((k,w)=>({timestamp:k.timestamp,blockIndex:w})).sort((k,w)=>k.timestamp-w.timestamp);for(let k=0;k<d.presentationTimestamps.length;k++){let w=d.presentationTimestamps[k],T=d.blocks[w.blockIndex];if(d.firstKeyFrameTimestamp===null&&T.isKeyFrame&&(d.firstKeyFrameTimestamp=T.timestamp),k<d.presentationTimestamps.length-1){let S=d.presentationTimestamps[k+1];T.duration=S.timestamp-T.timestamp}else T.duration===0&&f.defaultDuration!=null&&T.lacing===0&&(T.duration=f.defaultDuration)}p&&(this.expandLacedBlocks(d.blocks,f),d.presentationTimestamps=d.blocks.map((k,w)=>({timestamp:k.timestamp,blockIndex:w})).sort((k,w)=>k.timestamp-w.timestamp));let b=d.blocks[d.presentationTimestamps[0].blockIndex],g=d.blocks[X(d.presentationTimestamps).blockIndex];d.startTimestamp=b.timestamp,d.endTimestamp=g.timestamp+g.duration;let y=H(f.clusterPositionCache,d.startTimestamp,k=>k.startTimestamp);(y===-1||f.clusterPositionCache[y].elementStartPos!==a)&&f.clusterPositionCache.splice(y+1,0,{elementStartPos:m.elementStartPos,startTimestamp:d.startTimestamp})}return r.lastReadCluster=m,m}getTrackDataInCluster(e,r){let i=e.trackData.get(r);if(!i){let a=e.segment.tracks.find(s=>s.id===r);if(!a)return null;i={track:a,startTimestamp:0,endTimestamp:0,firstKeyFrameTimestamp:null,blocks:[],presentationTimestamps:[]},e.trackData.set(r,i)}return i}expandLacedBlocks(e,r){for(let i=0;i<e.length;i++){let a=e[i];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=O(s)+1;switch(a.lacing){case 1:{let l=0;for(let m=0;m<c-1;m++){let d=0;for(;s.bufferPos<s.length;){let f=O(s);if(d+=f,f<255){o.push(d),l+=d;break}}}o.push(s.length-(s.bufferPos+l))}break;case 2:{let l=s.length-1,m=Math.floor(l/c);for(let d=0;d<c;d++)o.push(m)}break;case 3:{let l=Ei(s);h(l!==null);let m=l;o.push(m);let d=m;for(let f=1;f<c-1;f++){let p=s.bufferPos,b=Ei(s);h(b!==null);let g=b,k=(1<<(s.bufferPos-p)*7-1)-1,w=g-k;m+=w,o.push(m),d+=m}o.push(s.length-(s.bufferPos+d))}break;default:h(!1)}h(o.length===c),e.splice(i,1);let u=a.duration||c*(r.defaultDuration??0);for(let l=0;l<c;l++){let m=o[l],d=B(s,m),f=a.timestamp+u*l/c,p=u/c;e.splice(i+l,0,{timestamp:f,duration:p,isKeyFrame:a.isKeyFrame,data:d,lacing:0,decoded:!0,mainAdditional:a.mainAdditional})}i+=c,i--}}async loadSegmentMetadata(e){for(let r of e.seekEntries){if(!(r.id===307544935&&!e.tagsSeen)){if(!(r.id===423732329&&!e.attachmentsSeen))continue}let i=this.reader.requestSliceRange(e.dataStartPos+r.segmentPosition,De,mt);if(i instanceof Promise&&(i=await i),!i)continue;let a=ft(i);if(!a||a.id!==r.id)continue;let{size:s}=a;Xt(s),h(!this.currentSegment),this.currentSegment=e;let o=this.reader.requestSlice(i.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>=De;){let i=e.filePos;if(!this.traverseElement(e,r))return i}return e.filePos}traverseElement(e,r){let i=ft(e);if(!i||r&&r.includes(i.id))return!1;let{id:a,size:s}=i,o=e.filePos;switch(Xt(s),a){case 17026:this.isWebM=gr(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=G(e,s)}break;case 21420:{let c=this.currentSegment?.seekEntries[this.currentSegment.seekEntries.length-1];if(!c)break;c.segmentPosition=G(e,s)}break;case 2807729:{if(!this.currentSegment)break;this.currentSegment.timestampScale=G(e,s),this.currentSegment.timestampFactor=1e9/this.currentSegment.timestampScale}break;case 17545:{if(!this.currentSegment)break;this.currentSegment.duration=Ya(e,s)}break;case 174:{if(!this.currentSegment||(this.currentTrack={id:-1,segment:this.currentSegment,demuxer:this,clusterPositionCache:[],cuePoints:[],disposition:{...Se,primary:!1},trackBacking:null,codecId:null,codecPrivate:null,defaultDuration:null,defaultDurationNs:null,name:null,languageCode:"eng",hasLanguageBcp47:!1,decodingInstructions:[],info:null},this.readContiguousElements(e.slice(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){if(this.currentTrack.info.squarePixelWidth=this.currentTrack.info.width,this.currentTrack.info.squarePixelHeight=this.currentTrack.info.height,this.currentTrack.info.displayWidth!==null&&this.currentTrack.info.displayHeight!==null){let m=this.currentTrack.info.displayWidth*this.currentTrack.info.height,d=this.currentTrack.info.displayHeight*this.currentTrack.info.width;m>0&&d>0&&(m>d?this.currentTrack.info.squarePixelWidth=Math.round(this.currentTrack.info.width*m/d):this.currentTrack.info.squarePixelHeight=Math.round(this.currentTrack.info.height*d/m))}this.currentTrack.codecId===Me.avc?(this.currentTrack.info.codec="avc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):this.currentTrack.codecId===Me.hevc?(this.currentTrack.info.codec="hevc",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):u===Me.vp8?this.currentTrack.info.codec="vp8":u===Me.vp9?this.currentTrack.info.codec="vp9":u===Me.av1&&(this.currentTrack.info.codec="av1");let l=this.currentTrack;this.currentTrack.trackBacking=new sc(l),this.currentSegment.tracks.push(this.currentTrack)}else if(this.currentTrack.info.type==="audio"){u===Me.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===Me.mp3?this.currentTrack.info.codec="mp3":u===Me.opus?(this.currentTrack.info.codec="opus",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate,this.currentTrack.info.sampleRate=at):u===Me.vorbis?(this.currentTrack.info.codec="vorbis",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):u===Me.flac?(this.currentTrack.info.codec="flac",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):u===Me.ac3?(this.currentTrack.info.codec="ac3",this.currentTrack.info.codecDescription=this.currentTrack.codecPrivate):u===Me.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 l=this.currentTrack;this.currentTrack.trackBacking=new oc(l),this.currentSegment.tracks.push(this.currentTrack)}}this.currentTrack=null}break;case 215:{if(!this.currentTrack)break;this.currentTrack.id=G(e,s)}break;case 131:{if(!this.currentTrack)break;let c=G(e,s);c===1?this.currentTrack.info={type:"video",width:-1,height:-1,displayWidth:null,displayHeight:null,displayUnit:null,squarePixelWidth:-1,squarePixelHeight:-1,rotation:0,codec:null,codecDescription:null,colorSpace:null,alphaMode:!1}:c===2&&(this.currentTrack.info={type:"audio",numberOfChannels:1,sampleRate:8e3,bitDepth:-1,codec:null,codecDescription:null,aacCodecInfo:null})}break;case 185:{if(!this.currentTrack)break;G(e,s)||(this.currentTrack=null)}break;case 136:{if(!this.currentTrack)break;this.currentTrack.disposition.default=!!G(e,s)}break;case 21930:{if(!this.currentTrack)break;this.currentTrack.disposition.forced=!!G(e,s)}break;case 21934:{if(!this.currentTrack)break;this.currentTrack.disposition.original=!!G(e,s)}break;case 21931:{if(!this.currentTrack)break;this.currentTrack.disposition.hearingImpaired=!!G(e,s)}break;case 21932:{if(!this.currentTrack)break;this.currentTrack.disposition.visuallyImpaired=!!G(e,s)}break;case 21935:{if(!this.currentTrack)break;this.currentTrack.disposition.commentary=!!G(e,s)}break;case 134:{if(!this.currentTrack)break;this.currentTrack.codecId=gr(e,s)}break;case 25506:{if(!this.currentTrack)break;this.currentTrack.codecPrivate=B(e,s)}break;case 2352003:{if(!this.currentTrack)break;this.currentTrack.defaultDurationNs=G(e,s)}break;case 21358:{if(!this.currentTrack)break;this.currentTrack.name=vi(e,s)}break;case 2274716:{if(!this.currentTrack||this.currentTrack.hasLanguageBcp47)break;this.currentTrack.languageCode=gr(e,s),Ut(this.currentTrack.languageCode)||(this.currentTrack.languageCode=J)}break;case 2274717:{if(!this.currentTrack)break;let u=gr(e,s).split("-")[0];u?this.currentTrack.languageCode=u:this.currentTrack.languageCode=J,this.currentTrack.hasLanguageBcp47=!0}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=G(e,s)}break;case 186:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.height=G(e,s)}break;case 21680:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.displayWidth=G(e,s)}break;case 21690:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.displayHeight=G(e,s)}break;case 21682:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.displayUnit=G(e,s)}break;case 21440:{if(this.currentTrack?.info?.type!=="video")break;this.currentTrack.info.alphaMode=G(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=G(e,s),u=Vr[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=G(e,s)===2}break;case 21946:{if(this.currentTrack?.info?.type!=="video"||!this.currentTrack.info.colorSpace)break;let c=G(e,s),u=Dr[c]??null;this.currentTrack.info.colorSpace.transfer=u}break;case 21947:{if(this.currentTrack?.info?.type!=="video"||!this.currentTrack.info.colorSpace)break;let c=G(e,s),u=Or[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=-Ya(e,s);try{this.currentTrack.info.rotation=Ze(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=Ya(e,s)}break;case 159:{if(this.currentTrack?.info?.type!=="audio")break;this.currentTrack.info.numberOfChannels=G(e,s)}break;case 25188:{if(this.currentTrack?.info?.type!=="audio")break;this.currentTrack.info.bitDepth=G(e,s)}break;case 187:{if(!this.currentSegment)break;this.readContiguousElements(e.slice(o,s)),this.currentCueTime=null}break;case 179:this.currentCueTime=G(e,s);break;case 183:{if(this.currentCueTime===null)break;h(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=G(e,s)}break;case 241:{let c=this.currentSegment?.cuePoints[this.currentSegment.cuePoints.length-1];if(!c)break;h(this.currentSegment),c.clusterPosition=this.currentSegment.dataStartPos+G(e,s)}break;case 231:{if(!this.currentCluster)break;this.currentCluster.timestamp=G(e,s)}break;case 163:{if(!this.currentCluster)break;let c=Ei(e);if(c===null)break;let u=this.getTrackDataInCluster(this.currentCluster,c);if(!u)break;let l=Tn(e),m=O(e),d=m>>1&3,f=!!(m&128);u.track.info?.type==="audio"&&u.track.info.codec&&(f=!0);let p=B(e,s-(e.filePos-o)),b=u.track.decodingInstructions.length>0;u.blocks.push({timestamp:l,duration:0,isKeyFrame:f,data:p,lacing:d,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=Ei(e);if(c===null)break;let u=this.getTrackDataInCluster(this.currentCluster,c);if(!u)break;let l=Tn(e),d=O(e)>>1&3,f=B(e,s-(e.filePos-o)),p=u.track.decodingInstructions.length>0;this.currentBlock={timestamp:l,duration:0,isKeyFrame:!0,data:f,lacing:d,decoded:!p,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=B(e,s)}break;case 238:{if(!this.currentBlockAdditional)break;this.currentBlockAdditional.addId=G(e,s)}break;case 155:{if(!this.currentBlock)break;this.currentBlock.duration=G(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:G(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=vi(e,s);break;case 17543:{if(!this.currentSimpleTagName)break;let c=vi(e,s);this.processTagValue(this.currentSimpleTagName,c)}break;case 17541:{if(!this.currentSimpleTagName)break;let c=B(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 Lt(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,l="unknown";if(u){let m=u.toLowerCase();m.startsWith("cover.")?l="coverFront":m.startsWith("back.")&&(l="coverBack")}c.images??=[],c.images.push({data:this.currentAttachedFile.fileData,mimeType:this.currentAttachedFile.fileMediaType,kind:l,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=vl(e,s)}break;case 18030:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileName=vi(e,s)}break;case 18016:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileMediaType=gr(e,s)}break;case 18012:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileData=B(e,s)}break;case 18046:{if(!this.currentAttachedFile)break;this.currentAttachedFile.fileDescription=vi(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=G(e,s)}break;case 20530:{if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.scope=G(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=G(e,s)}break;case 16981:{if(this.currentDecodingInstruction?.data?.type!=="decompress")break;this.currentDecodingInstruction.data.settings=B(e,s)}break;case 20533:{if(!this.currentDecodingInstruction)break;this.currentDecodingInstruction.data={type:"decrypt"}}break}return e.filePos=o+s,!0}decodeBlockData(e,r){h(e.decodingInstructions.length>0);let i=r;for(let a of e.decodingInstructions)switch(h(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+i.length);o.set(s,0),o.set(i,s.length),i=o}break;default:}break;default:}return i}processTagValue(e,r){if(!this.currentSegment?.metadataTags)return;let i=this.currentSegment.metadataTags;if(i.raw??={},i.raw[e]??=r,typeof r=="string")switch(e.toLowerCase()){case"title":i.title??=r;break;case"description":i.description??=r;break;case"artist":i.artist??=r;break;case"album":i.album??=r;break;case"album_artist":i.albumArtist??=r;break;case"genre":i.genre??=r;break;case"comment":i.comment??=r;break;case"lyrics":i.lyrics??=r;break;case"date":{let a=new Date(r);Number.isNaN(a.getTime())||(i.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&&(i.trackNumber??=s),o&&Number.isInteger(o)&&o>0&&(i.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&&(i.discNumber??=s),o&&Number.isInteger(o)&&o>0&&(i.discsTotal??=o)}break}}},ts=class{constructor(t){this.internalTrack=t;this.packetToClusterLocation=new WeakMap}getId(){return this.internalTrack.id}getNumber(){let t=this.internalTrack.demuxer,e=this.internalTrack.trackBacking.getType(),r=0;for(let i of t.segments)for(let a of i.tracks)if(a.trackBacking.getType()===e&&r++,a===this.internalTrack)break;return r}getCodec(){throw new Error("Not implemented on base class.")}getInternalCodecId(){return this.internalTrack.codecId}getName(){return this.internalTrack.name}getLanguageCode(){return this.internalTrack.languageCode}getTimeResolution(){return this.internalTrack.segment.timestampFactor}isRelativeToUnixEpoch(){return!1}getDisposition(){return this.internalTrack.disposition}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){let t=this.internalTrack.segment;if(t.duration<=0)return null;let e=t.duration/t.timestampFactor,r=await this.getFirstPacket({metadataOnly:!0});return e+=r?.timestamp??0,e}async getLiveRefreshInterval(){return null}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 Vt(t*this.internalTrack.segment.timestampFactor)}async getPacket(t,e){let r=this.intoTimescale(t);return this.performClusterLookup(null,i=>{let a=i.trackData.get(this.internalTrack.id);if(!a)return{blockIndex:-1,correctBlockFound:!1};let s=H(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,i=>{if(i===r.cluster){let a=i.trackData.get(this.internalTrack.id);if(r.blockIndex+1<a.blocks.length)return{blockIndex:r.blockIndex+1,correctBlockFound:!0}}else if(i.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,i=>{let a=i.trackData.get(this.internalTrack.id);if(!a)return{blockIndex:-1,correctBlockFound:!1};let s=ar(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,i=>{if(i===r.cluster){let s=i.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=i.trackData.get(this.internalTrack.id);if(a&&a.firstKeyFrameTimestamp!==null){let s=a.blocks.findIndex(o=>o.isKeyFrame);return h(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];h(a),a.decoded||(a.data=this.internalTrack.demuxer.decodeBlockData(this.internalTrack,a.data),a.decoded=!0);let s=r.metadataOnly?de: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?de:a.mainAdditional,u.alphaByteLength=a.mainAdditional.byteLength);let l=new Q(s,a.isKeyFrame?"key":"delta",o,c,t.dataStartPos+e,a.data.byteLength,u);return this.packetToClusterLocation.set(l,{cluster:t,blockIndex:e}),l}async performClusterLookup(t,e,r,i,a){let{demuxer:s,segment:o}=this.internalTrack,c=null,u=null,l=-1;if(t){let{blockIndex:y,correctBlockFound:k}=e(t);if(k)return this.fetchPacketInCluster(t,y,a);y!==-1&&(u=t,l=y)}let m=H(this.internalTrack.cuePoints,r,y=>y.time),d=m!==-1?this.internalTrack.cuePoints[m]:null,f=H(this.internalTrack.clusterPositionCache,r,y=>y.startTimestamp),p=f!==-1?this.internalTrack.clusterPositionCache[f]:null,b=Math.max(d?.clusterPosition??0,p?.elementStartPos??0)||null,g;for(t?b===null||t.elementStartPos>=b?(g=t.elementEndPos,c=t):g=b:g=b??o.clusterSeekStartPos;o.elementEndPos===null||g<=o.elementEndPos-De;){if(c){let A=c.trackData.get(this.internalTrack.id);if(A&&A.startTimestamp>i)break}let y=s.reader.requestSliceRange(g,De,mt);if(y instanceof Promise&&(y=await y),!y)break;let k=g,w=ft(y);if(!w||!Ii.includes(w.id)&&w.id!==236){let A=await nc(s.reader,k,Ii,Math.min(o.elementEndPos??1/0,k+Fl));if(A){g=A;continue}else break}let T=w.id,S=w.size,x=y.filePos;if(T===524531317){c=await s.readCluster(k,o),S=c.elementEndPos-x;let{blockIndex:A,correctBlockFound:C}=e(c);if(C)return this.fetchPacketInCluster(c,A,a);A!==-1&&(u=c,l=A)}S===void 0&&(h(T!==524531317),S=(await Za(s.reader,x,Sn,o.elementEndPos)).pos-x);let P=x+S;if(o.elementEndPos===null){let A=s.reader.requestSliceRange(P,De,mt);if(A instanceof Promise&&(A=await A),!A)break;if($a(A)===408125543){o.elementEndPos=P;break}}g=P}if(d&&(!u||u.elementStartPos<d.clusterPosition)){let y=this.internalTrack.cuePoints[m-1];h(!y||y.time<d.time);let k=y?.time??-1/0;return this.performClusterLookup(null,e,k,i,a)}return u?this.fetchPacketInCluster(u,l,a):null}},sc=class extends ts{constructor(e){super(e);this.decoderConfigPromise=null;this.internalTrack=e}getType(){return"video"}getCodec(){return this.internalTrack.info.codec}getCodedWidth(){return this.internalTrack.info.width}getCodedHeight(){return this.internalTrack.info.height}getSquarePixelWidth(){return this.internalTrack.info.squarePixelWidth}getSquarePixelHeight(){return this.internalTrack.info.squarePixelHeight}getRotation(){return this.internalTrack.info.rotation}async getColorSpace(){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;(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({}));let i={codec:gi({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?ki(e.data):null,hevcCodecInfo:this.internalTrack.info.codec==="hevc"&&e?Ti(e.data):null,vp9CodecInfo:this.internalTrack.info.codec==="vp9"&&e?Fa(e.data):null,av1CodecInfo:this.internalTrack.info.codec==="av1"&&e?Ma(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};return(this.internalTrack.info.width!==this.internalTrack.info.squarePixelWidth||this.internalTrack.info.height!==this.internalTrack.info.squarePixelHeight)&&(i.displayAspectWidth=this.internalTrack.info.squarePixelWidth,i.displayAspectHeight=this.internalTrack.info.squarePixelHeight),i})():null}},oc=class extends ts{constructor(e){super(e);this.decoderConfig=null;this.internalTrack=e}getType(){return"audio"}getCodec(){return this.internalTrack.info.codec}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels}getSampleRate(){return this.internalTrack.info.sampleRate}async getDecoderConfig(){return this.internalTrack.info.codec?this.decoderConfig??={codec:bi({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 An=async(n,t,e,r=null)=>{let a=t;for(;e===null||a<e;){let s=e!==null?Math.min(65536,e-a):65536,o=n.requestSliceRange(a,4,s);if(o instanceof Promise&&(o=await o),!o||o.length<4)break;for(;o.remainingLength>=4;){let c=o.filePos,u=F(o),l=n.fileSize!==null?n.fileSize-a:null,m=Gr(u,l);if(m.header&&(!r||m.header.sampleRate===r.sampleRate&&m.header.mpegVersionId===r.mpegVersionId&&m.header.layer===r.layer&&dr(m.header.channel)===dr(r.channel)))return{header:m.header,startPos:a};o.filePos=c+m.bytesAdvanced,a=o.filePos}}return null};var rs=class extends pe{constructor(e){super(e);this.metadataPromise=null;this.firstFrameHeader=null;this.firstFrameHeaderPos=null;this.loadedSamples=[];this.metadataTags=null;this.xingData=null;this.trackBackings=[];this.readingMutex=new ve;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.trackBackings=[new cc(this)]})()}async advanceReader(){if(this.lastLoadedPos===0)for(;;){let c=this.reader.requestSlice(this.lastLoadedPos,We);if(c instanceof Promise&&(c=await c),!c){this.lastSampleLoaded=!0;return}let u=pt(c);if(!u)break;this.lastLoadedPos=c.filePos+u.size}let e=await An(this.reader,this.lastLoadedPos,this.reader.fileSize,this.firstFrameHeader);if(!e){this.lastSampleLoaded=!0;return}let r=e.header;this.lastLoadedPos=e.startPos+r.totalSize-1;let i=lr(r.mpegVersionId,r.channel),a=this.reader.requestSlice(e.startPos+i,4);if(a instanceof Promise&&(a=await a),a){let c=F(a);if(c===ur||c===yi){if(!this.xingData){let l=this.reader.requestSlice(e.startPos+i+4,12);if(l instanceof Promise&&(l=await l),l){let m=B(l,12),d=V(m),f=d.getUint32(0,!1);this.xingData={frameCount:f&1?d.getUint32(4,!1):null,fileSize:f&2?d.getUint32(8,!1):null}}}return}}this.firstFrameHeader||(this.firstFrameHeader=r,this.firstFrameHeaderPos=e.startPos);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 getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){let e=await this.readingMutex.acquire();try{if(await this.readMetadata(),this.metadataTags)return this.metadataTags;this.metadataTags={};let r=0,i=!1;for(;;){let a=this.reader.requestSlice(r,We);if(a instanceof Promise&&(a=await a),!a)break;let s=pt(a);if(!s)break;i=!0;let o=this.reader.requestSlice(a.filePos,s.size);if(o instanceof Promise&&(o=await o),!o)break;_i(o,s,this.metadataTags),r=a.filePos+s.size}if(!i&&this.reader.fileSize!==null&&this.reader.fileSize>=xn){let a=this.reader.requestSlice(this.reader.fileSize-xn,xn);a instanceof Promise&&(a=await a),h(a),re(a,3)==="TAG"&&Ml(a,this.metadataTags)}return this.metadataTags}finally{e()}}},cc=class{constructor(t){this.demuxer=t}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return h(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate/this.demuxer.firstFrameHeader.audioSamplesInFrame}isRelativeToUnixEpoch(){return!1}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){let t=this.demuxer;if(h(t.firstFrameHeader!==null),h(t.firstFrameHeaderPos!==null),t.xingData){if(t.xingData.frameCount!==null)return t.xingData.frameCount*t.firstFrameHeader.audioSamplesInFrame/t.firstFrameHeader.sampleRate}else if(t.reader.fileSize!==null){let e=el(t.firstFrameHeader.lowSamplingFrequency,t.firstFrameHeader.layer,t.firstFrameHeader.bitrate,t.firstFrameHeader.sampleRate),r=(t.reader.fileSize-t.firstFrameHeaderPos)/e;return Math.round(r)*t.firstFrameHeader.audioSamplesInFrame/t.firstFrameHeader.sampleRate}return null}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return J}getCodec(){return"mp3"}getInternalCodecId(){return null}getNumberOfChannels(){return h(this.demuxer.firstFrameHeader),dr(this.demuxer.firstFrameHeader.channel)}getSampleRate(){return h(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.sampleRate}getDisposition(){return{...Se}}async getDecoderConfig(){return h(this.demuxer.firstFrameHeader),{codec:"mp3",numberOfChannels:dr(this.demuxer.firstFrameHeader.channel),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 i;if(e.metadataOnly)i=de;else{let a=this.demuxer.reader.requestSlice(r.dataStart,r.dataSize);if(a instanceof Promise&&(a=await a),!a)return null;i=B(a,r.dataSize)}return new Q(i,"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 i=Dt(this.demuxer.loadedSamples,t.timestamp,s=>s.timestamp);if(i===-1)throw new Error("Packet was not created from this track.");let a=i+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 i=H(this.demuxer.loadedSamples,t,a=>a.timestamp);if(i===-1&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,e);if(i>=0&&i+1<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(i,e);await this.demuxer.advanceReader()}}finally{r()}}getKeyPacket(t,e){return this.getPacket(t,e)}getNextKeyPacket(t,e){return this.getNextPacket(t,e)}};var Pn=1399285583,$m=79764919,Bl=new Uint32Array(256);for(let n=0;n<256;n++){let t=n<<24;for(let e=0;e<8;e++)t=t&2147483648?t<<1^$m:t<<1;Bl[n]=t>>>0&4294967295}var is=n=>{let t=V(n),e=t.getUint32(22,!0);t.setUint32(22,0,!0);let r=0;for(let i=0;i<n.length;i++){let a=n[i];r=(r<<8^Bl[r>>>24^a])>>>0}return t.setUint32(22,e,!0),r},ns=(n,t,e)=>{let r=0,i=null;if(n.length>0)if(t.codec==="vorbis"){h(t.vorbisInfo);let a=t.vorbisInfo.modeBlockflags.length,o=(1<<Ru(a-1))-1<<1,c=(n[0]&o)>>1;if(c>=t.vorbisInfo.modeBlockflags.length)throw new Error("Invalid mode number.");let u=e,l=t.vorbisInfo.modeBlockflags[c];if(i=t.vorbisInfo.blocksizes[l],l===1){let m=(o|1)+1,d=n[0]&m?1:0;u=t.vorbisInfo.blocksizes[d]}r=u!==null?u+i>>2:0}else t.codec==="opus"&&(r=dl(n).durationInSamples);return{durationInSamples:r,vorbisBlockSize:i}},as=n=>{let t="audio/ogg";if(n.codecStrings){let e=[...new Set(n.codecStrings)];t+=`; codecs="${e.join(", ")}"`}return t};var br=27,jr=282,ss=jr+255*255,Ri=n=>{let t=n.filePos;if(Qr(n)!==Pn)return null;n.skip(1);let r=O(n),i=Dl(n),a=Qr(n),s=Qr(n),o=Qr(n),c=O(n),u=new Uint8Array(c);for(let f=0;f<c;f++)u[f]=O(n);let l=27+c,m=u.reduce((f,p)=>f+p,0),d=l+m;return{headerStartPos:t,totalSize:d,dataStartPos:t+l,dataSize:m,headerType:r,granulePosition:i,serialNumber:a,sequenceNumber:s,checksum:o,lacingValues:u}},Ol=(n,t)=>{for(;n.filePos<t-3;){let e=Qr(n),r=e&255,i=e>>>8&255,a=e>>>16&255,s=e>>>24&255,o=79;if(!(r!==o&&i!==o&&a!==o&&s!==o)){if(n.skip(-4),e===Pn)return!0;n.skip(1)}}return!1};var os=class extends pe{constructor(e){super(e);this.metadataPromise=null;this.bitstreams=[];this.trackBackings=[];this.metadataTags={};this.reader=e._reader}async readMetadata(){return this.metadataPromise??=(async()=>{let e=0;for(;;){let r=this.reader.requestSliceRange(e,br,jr);if(r instanceof Promise&&(r=await r),!r)break;let i=Ri(r);if(!i||!!!(i.headerType&2))break;this.bitstreams.push({serialNumber:i.serialNumber,bosPage:i,description:null,numberOfChannels:-1,sampleRate:-1,codecInfo:{codec:null,vorbisInfo:null,opusInfo:null},lastMetadataPacket:null}),e=i.headerStartPos+i.totalSize}for(let r of this.bitstreams){let i=await this.readPacket(r.bosPage,0);i&&(i.data.byteLength>=7&&i.data[0]===1&&i.data[1]===118&&i.data[2]===111&&i.data[3]===114&&i.data[4]===98&&i.data[5]===105&&i.data[6]===115?await this.readVorbisMetadata(i,r):i.data.byteLength>=8&&i.data[0]===79&&i.data[1]===112&&i.data[2]===117&&i.data[3]===115&&i.data[4]===72&&i.data[5]===101&&i.data[6]===97&&i.data[7]===100&&await this.readOpusMetadata(i,r),r.codecInfo.codec!==null&&this.trackBackings.push(new uc(r,this)))}})()}async readVorbisMetadata(e,r){let i=await this.findNextPacketStart(e);if(!i)return;let a=await this.readPacket(i.startPage,i.startSegmentIndex);if(!a||(i=await this.findNextPacketStart(a),!i))return;let s=await this.readPacket(i.startPage,i.startSegmentIndex);if(!s||a.data[0]!==3||s.data[0]!==5)return;let o=[],c=d=>{for(;o.push(Math.min(255,d)),!(d<255);)d-=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 l=V(e.data);r.numberOfChannels=l.getUint8(11),r.sampleRate=l.getUint32(12,!0);let m=l.getUint8(28);r.codecInfo.vorbisInfo={blocksizes:[1<<(m&15),1<<(m>>4)],modeBlockflags:Ba(s.data).modeBlockflags},pn(a.data.subarray(7),this.metadataTags)}async readOpusMetadata(e,r){let i=await this.findNextPacketStart(e);if(!i)return;let a=await this.readPacket(i.startPage,i.startSegmentIndex);if(!a)return;r.codecInfo.codec="opus",r.description=e.data,r.lastMetadataPacket=a;let s=fr(e.data);r.numberOfChannels=s.outputChannelCount,r.sampleRate=at,r.codecInfo.opusInfo={preSkip:s.preSkip},pn(a.data.subarray(8),this.metadataTags)}async readPacket(e,r){h(r<e.lacingValues.length);let i=0;for(let d=0;d<r;d++)i+=e.lacingValues[d];let a=e,s=i,o=r,c=[];e:for(;;){let d=this.reader.requestSlice(a.dataStartPos,a.dataSize);d instanceof Promise&&(d=await d),h(d);let f=B(d,a.dataSize);for(;;){if(o===a.lacingValues.length){c.push(f.subarray(i,s));break}let b=a.lacingValues[o];if(s+=b,b<255){c.push(f.subarray(i,s));break e}o++}let p=a.headerStartPos+a.totalSize;for(;;){let b=this.reader.requestSliceRange(p,br,jr);if(b instanceof Promise&&(b=await b),!b)return null;let g=Ri(b);if(!g)return null;if(a=g,a.serialNumber===e.serialNumber)break;p=a.headerStartPos+a.totalSize}i=0,s=0,o=0}let u=c.reduce((d,f)=>d+f.length,0);if(u===0)return null;let l=new Uint8Array(u),m=0;for(let d=0;d<c.length;d++){let f=c[d];l.set(f,m),m+=f.length}return{data:l,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 i=e.endPage.headerStartPos+e.endPage.totalSize;for(;;){let a=this.reader.requestSliceRange(i,br,jr);if(a instanceof Promise&&(a=await a),!a)return null;let s=Ri(a);if(!s)return null;if(s.serialNumber===e.endPage.serialNumber)return{startPage:s,startSegmentIndex:0};i=s.headerStartPos+s.totalSize}}async getMimeType(){await this.readMetadata();let e=await Promise.all(this.trackBackings.map(r=>r.getDecoderConfig().then(i=>i?.codec??null)));return as({codecStrings:e.filter(Boolean)})}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}},uc=class{constructor(t,e){this.bitstream=t;this.demuxer=e;this.encodedPacketToMetadata=new WeakMap;this.sequentialScanCache=[];this.sequentialScanMutex=new ve;this.internalSampleRate=t.codecInfo.codec==="opus"?at:t.sampleRate}getType(){return"audio"}getId(){return this.bitstream.serialNumber}getNumber(){let t=this.demuxer.trackBackings.findIndex(e=>e.bitstream===this.bitstream);return h(t!==-1),t+1}getNumberOfChannels(){return this.bitstream.numberOfChannels}getSampleRate(){return this.bitstream.sampleRate}getTimeResolution(){return this.bitstream.sampleRate}isRelativeToUnixEpoch(){return!1}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getCodec(){return this.bitstream.codecInfo.codec}getInternalCodecId(){return null}async getDecoderConfig(){return h(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 J}getDisposition(){return{...Se,primary:!1}}granulePositionToTimestampInSamples(t){return this.bitstream.codecInfo.codec==="opus"?(h(this.bitstream.codecInfo.opusInfo),t-this.bitstream.codecInfo.opusInfo.preSkip):t}createEncodedPacketFromOggPacket(t,e,r){if(!t)return null;let{durationInSamples:i,vorbisBlockSize:a}=ns(t.data,this.bitstream.codecInfo,e.vorbisLastBlocksize),s=new Q(r.metadataOnly?de:t.data,"key",Math.max(0,e.timestampInSamples)/this.internalSampleRate,i/this.internalSampleRate,t.endPage.headerStartPos+t.endSegmentIndex,t.data.byteLength);return this.encodedPacketToMetadata.set(s,{packet:t,timestampInSamples:e.timestampInSamples,durationInSamples:i,vorbisLastBlockSize:e.vorbisLastBlocksize,vorbisBlockSize:a}),s}async getFirstPacket(t){h(this.bitstream.lastMetadataPacket);let e=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!e)return null;let r=0;this.bitstream.codecInfo.codec==="opus"&&(h(this.bitstream.codecInfo.opusInfo),r-=this.bitstream.codecInfo.opusInfo.preSkip);let i=await this.demuxer.readPacket(e.startPage,e.startSegmentIndex);return this.createEncodedPacketFromOggPacket(i,{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 i=await this.demuxer.findNextPacketStart(r.packet);if(!i)return null;let a=r.timestampInSamples+r.durationInSamples,s=await this.demuxer.readPacket(i.startPage,i.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=Vt(t*this.internalSampleRate);if(r===0)return this.getFirstPacket(e);if(r<0)return null;h(this.bitstream.lastMetadataPacket);let i=await this.demuxer.findNextPacketStart(this.bitstream.lastMetadataPacket);if(!i)return null;let a=i.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),T=w;for(;;){let S=Math.min(T+ss,s-br),x=this.demuxer.reader.requestSlice(T,S-T);if(x instanceof Promise&&(x=await x),h(x),!Ol(x,S)){s=w+br;continue e}let A=this.demuxer.reader.requestSliceRange(x.filePos,br,jr);A instanceof Promise&&(A=await A),h(A);let C=Ri(A);h(C);let I=!1;if(C.serialNumber===this.bitstream.serialNumber)I=!0;else{let v=this.demuxer.reader.requestSlice(C.headerStartPos,C.totalSize);v instanceof Promise&&(v=await v),h(v);let E=B(v,C.totalSize);I=is(E)===C.checksum}if(!I){T=C.headerStartPos+4;continue}if(I&&C.serialNumber!==this.bitstream.serialNumber){T=C.headerStartPos+C.totalSize;continue}if(C.granulePosition===-1){T=C.headerStartPos+C.totalSize;continue}this.granulePositionToTimestampInSamples(C.granulePosition)>r?s=C.headerStartPos:(a=C,o.push(C));continue e}}let c=i.startPage;for(let k of o){if(k.granulePosition===a.granulePosition)break;(!c||k.headerStartPos>c.headerStartPos)&&(c=k)}let u=c,l=[u];for(;!(u.serialNumber===this.bitstream.serialNumber&&u.granulePosition===a.granulePosition);){let k=u.headerStartPos+u.totalSize,w=this.demuxer.reader.requestSliceRange(k,br,jr);w instanceof Promise&&(w=await w),h(w);let T=Ri(w);h(T),u=T,u.serialNumber===this.bitstream.serialNumber&&l.push(u)}h(u.granulePosition!==-1);let m=null,d,f,p=u,b=0;if(u.headerStartPos===i.startPage.headerStartPos)d=this.granulePositionToTimestampInSamples(0),f=!0,m=0;else{d=0,f=!1;for(let T=u.lacingValues.length-1;T>=0;T--)if(u.lacingValues[T]<255){m=T+1;break}if(m===null)throw new Error("Invalid page with granule position: no packets end on this page.");b=m-1;let k={data:de,endPage:p,endSegmentIndex:b};if(await this.demuxer.findNextPacketStart(k)){let T=Ul(l,u,m);h(T);let S=Vl(l,T.page,T.segmentIndex);S&&(u=S.page,m=S.segmentIndex)}else for(;;){let T=Ul(l,u,m);if(!T)break;let S=Vl(l,T.page,T.segmentIndex);if(!S)break;if(u=S.page,m=S.segmentIndex,T.page.headerStartPos!==p.headerStartPos){p=T.page,b=T.segmentIndex;break}}}let g=null,y=null;for(;u!==null;){h(m!==null);let k=await this.demuxer.readPacket(u,m);if(!k)break;if(!(u.headerStartPos===i.startPage.headerStartPos&&m<i.startSegmentIndex)){let S=this.createEncodedPacketFromOggPacket(k,{timestampInSamples:d,vorbisLastBlocksize:y?.vorbisBlockSize??null},e);h(S);let x=this.encodedPacketToMetadata.get(S);if(h(x),!f&&k.endPage.headerStartPos===p.headerStartPos&&k.endSegmentIndex===b?(d=this.granulePositionToTimestampInSamples(u.granulePosition),f=!0,S=this.createEncodedPacketFromOggPacket(k,{timestampInSamples:d-x.durationInSamples,vorbisLastBlocksize:y?.vorbisBlockSize??null},e),h(S),x=this.encodedPacketToMetadata.get(S),h(x)):d+=x.durationInSamples,g=S,y=x,f&&(Math.max(d,0)>r||Math.max(x.timestampInSamples,0)===r))break}let T=await this.demuxer.findNextPacketStart(k);if(!T)break;u=T.startPage,m=T.startSegmentIndex}return g}async getPacketSequential(t,e){let r=await this.sequentialScanMutex.acquire();try{let i=Vt(t*this.internalSampleRate);t=i/this.internalSampleRate;let a=H(this.sequentialScanCache,i,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);h(u),this.sequentialScanCache.length>0&&h(X(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)}},Vl=(n,t,e)=>{let r=t,i=e;e:for(;;){for(i--,i;i>=0;i--)if(r.lacingValues[i]<255){i++;break e}if(h(i===-1),!(r.headerType&1)){i=0;break}let s=qo(n,o=>o.headerStartPos<r.headerStartPos);if(!s)return null;r=s,i=r.lacingValues.length}if(h(i!==-1),i===r.lacingValues.length){let a=n[n.indexOf(r)+1];h(a),r=a,i=0}return{page:r,segmentIndex:i}},Ul=(n,t,e)=>{if(e>0)return{page:t,segmentIndex:e-1};let r=qo(n,i=>i.headerStartPos<t.headerStartPos);return r?{page:r,segmentIndex:r.lacingValues.length-1}:null};var cs=class extends pe{constructor(e){super(e);this.metadataPromise=null;this.dataStart=-1;this.dataSize=-1;this.audioInfo=null;this.trackBackings=[];this.lastKnownPacketIndex=0;this.metadataTags={};this.reader=e._reader}async readMetadata(){return this.metadataPromise??=(async()=>{let e=this.reader.requestSlice(0,12);e instanceof Promise&&(e=await e),h(e);let r=re(e,4),i=r!=="RIFX",a=r==="RF64",s=Yt(e,i),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,l=null,m=e.filePos;for(;o===null||m<o;){let f=this.reader.requestSlice(m,8);if(f instanceof Promise&&(f=await f),!f)break;let p=re(f,4),b=Yt(f,i),g=f.filePos;if(a&&u===0&&p!=="ds64")throw new Error('Invalid RF64 file: First chunk must be "ds64".');if(p==="fmt ")await this.parseFmtChunk(g,b,i);else if(p==="data"){if(l??=b,this.dataStart=f.filePos,this.dataSize=Math.min(l,(o??1/0)-this.dataStart),this.reader.fileSize===null)break}else if(p==="ds64"){let y=this.reader.requestSlice(g,b);if(y instanceof Promise&&(y=await y),!y)break;let k=dc(y,i);l=dc(y,i),o=Math.min(k+8,this.reader.fileSize??1/0)}else p==="LIST"?await this.parseListChunk(g,b,i):(p==="ID3 "||p==="id3 ")&&await this.parseId3Chunk(g,b);m=g+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 d=this.audioInfo.blockSizeInBytes;this.dataSize=Math.floor(this.dataSize/d)*d,this.trackBackings.push(new lc(this))})()}async parseFmtChunk(e,r,i){let a=this.reader.requestSlice(e,r);if(a instanceof Promise&&(a=await a),!a)return;let s=Mi(a,i),o=Mi(a,i),c=Yt(a,i);a.skip(4);let u=Mi(a,i),l;if(r===14?l=8:l=Mi(a,i),r>=18&&s!==357){let m=Mi(a,i),d=r-18;if(Math.min(d,m)>=22&&s===65534){a.skip(6);let p=B(a,16);s=p[0]|p[1]<<8}}(s===7||s===6)&&(l=8),this.audioInfo={format:s,numberOfChannels:o,sampleRate:c,sampleSizeInBytes:Math.ceil(l/8),blockSizeInBytes:u}}async parseListChunk(e,r,i){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=Yt(a,i),l=B(a,u),m=0;for(let f=0;f<l.length&&l[f]!==0;f++)m++;let d=String.fromCharCode(...l.subarray(0,m));switch(this.metadataTags.raw??={},this.metadataTags.raw[c]=d,c){case"INAM":case"TITL":this.metadataTags.title??=d;break;case"TIT3":this.metadataTags.description??=d;break;case"IART":this.metadataTags.artist??=d;break;case"IPRD":this.metadataTags.album??=d;break;case"IPRT":case"ITRK":case"TRCK":{let f=d.split("/"),p=Number.parseInt(f[0],10),b=f[1]&&Number.parseInt(f[1],10);Number.isInteger(p)&&p>0&&(this.metadataTags.trackNumber??=p),b&&Number.isInteger(b)&&b>0&&(this.metadataTags.tracksTotal??=b)}break;case"ICRD":case"IDIT":{let f=new Date(d);Number.isNaN(f.getTime())||(this.metadataTags.date??=f)}break;case"YEAR":{let f=Number.parseInt(d,10);Number.isInteger(f)&&f>0&&(this.metadataTags.date??=new Date(f,0,1))}break;case"IGNR":case"GENR":this.metadataTags.genre??=d;break;case"ICMT":case"CMNT":case"COMM":this.metadataTags.comment??=d;break}o+=8+u+(u&1)}}async parseId3Chunk(e,r){let i=this.reader.requestSlice(e,r);if(i instanceof Promise&&(i=await i),!i)return;let a=pt(i);if(a){let s=r-We;if(a.size=Math.min(a.size,s),a.size>0){let o=i.slice(e+We,a.size);_i(o,a,this.metadataTags)}}}getCodec(){if(h(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 getTrackBackings(){return await this.readMetadata(),this.trackBackings}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}},Fi=2048,lc=class{constructor(t){this.demuxer=t}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return this.demuxer.getCodec()}getInternalCodecId(){return h(this.demuxer.audioInfo),this.demuxer.audioInfo.format}async getDecoderConfig(){let t=this.demuxer.getCodec();return t?(h(this.demuxer.audioInfo),{codec:t,numberOfChannels:this.demuxer.audioInfo.numberOfChannels,sampleRate:this.demuxer.audioInfo.sampleRate}):null}getNumberOfChannels(){return h(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return h(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getTimeResolution(){return h(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return h(this.demuxer.dataSize!==-1),this.demuxer.dataSize/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return J}getDisposition(){return{...Se}}async getPacketAtIndex(t,e){h(t>=0),h(this.demuxer.audioInfo);let r=t*Fi*this.demuxer.audioInfo.blockSizeInBytes;if(r>=this.demuxer.dataSize)return null;let i=Math.min(Fi*this.demuxer.audioInfo.blockSizeInBytes,this.demuxer.dataSize-r);if(this.demuxer.reader.fileSize===null){let c=this.demuxer.reader.requestSlice(this.demuxer.dataStart+r,i);if(c instanceof Promise&&(c=await c),!c)return null}let a;if(e.metadataOnly)a=de;else{let c=this.demuxer.reader.requestSlice(this.demuxer.dataStart+r,i);c instanceof Promise&&(c=await c),h(c),a=B(c,i)}let s=t*Fi/this.demuxer.audioInfo.sampleRate,o=i/this.demuxer.audioInfo.blockSizeInBytes/this.demuxer.audioInfo.sampleRate;return this.demuxer.lastKnownPacketIndex=Math.max(t,this.demuxer.lastKnownPacketIndex),new Q(a,"key",s,o,t,i)}getFirstPacket(t){return this.getPacketAtIndex(0,t)}async getPacket(t,e){h(this.demuxer.audioInfo);let r=Math.floor(Math.min(t*this.demuxer.audioInfo.sampleRate/Fi,(this.demuxer.dataSize-1)/(Fi*this.demuxer.audioInfo.blockSizeInBytes)));if(r<0)return null;let i=await this.getPacketAtIndex(r,e);if(i)return i;if(r===0)return null;h(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){h(this.demuxer.audioInfo);let r=Math.round(t.timestamp*this.demuxer.audioInfo.sampleRate/Fi);return this.getPacketAtIndex(r+1,e)}getKeyPacket(t,e){return this.getPacket(t,e)}getNextKeyPacket(t,e){return this.getNextPacket(t,e)}};var Zt=7,He=9,Ve=n=>{let t=n.filePos,e=B(n,9),r=new W(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 l=r.readBits(13);r.skipBits(11);let m=r.readBits(2)+1;if(m!==1)throw new Error("ADTS frames with more than one AAC frame are not supported.");let d=null;return s===1?n.filePos-=2:d=r.readBits(16),{objectType:o,samplingFrequencyIndex:c,channelConfiguration:u,frameLength:l,numberOfAacFrames:m,crcCheck:d,startPos:t}};var Cn=1024,us=class extends pe{constructor(e){super(e);this.metadataPromise=null;this.firstFrameHeader=null;this.loadedSamples=[];this.metadataTags=null;this.trackBackings=[];this.readingMutex=new ve;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();h(this.firstFrameHeader),this.trackBackings=[new mc(this)]})()}async advanceReader(){if(this.lastLoadedPos===0)for(;;){let o=this.reader.requestSlice(this.lastLoadedPos,We);if(o instanceof Promise&&(o=await o),!o){this.lastSampleLoaded=!0;return}let c=pt(o);if(!c)break;this.lastLoadedPos=o.filePos+c.size}let e=this.reader.requestSliceRange(this.lastLoadedPos,Zt,He);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 i=Ke[r.samplingFrequencyIndex];h(i!==void 0);let a=Cn/i,s={timestamp:this.nextTimestampInSamples/i,duration:a,dataStart:r.startPos,dataSize:r.frameLength};this.loadedSamples.push(s),this.nextTimestampInSamples+=Cn,this.lastLoadedPos=r.startPos+r.frameLength}async getMimeType(){return"audio/aac"}async getTrackBackings(){return await this.readMetadata(),this.trackBackings}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 i=this.reader.requestSlice(r,We);if(i instanceof Promise&&(i=await i),!i)break;let a=pt(i);if(!a)break;let s=this.reader.requestSlice(i.filePos,a.size);if(s instanceof Promise&&(s=await s),!s)break;_i(s,a,this.metadataTags),r=i.filePos+a.size}return this.metadataTags}finally{e()}}},mc=class{constructor(t){this.demuxer=t}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getTimeResolution(){return this.getSampleRate()/Cn}isRelativeToUnixEpoch(){return!1}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}getName(){return null}getLanguageCode(){return J}getCodec(){return"aac"}getInternalCodecId(){return h(this.demuxer.firstFrameHeader),this.demuxer.firstFrameHeader.objectType}getNumberOfChannels(){h(this.demuxer.firstFrameHeader);let t=St[this.demuxer.firstFrameHeader.channelConfiguration];return h(t!==void 0),t}getSampleRate(){h(this.demuxer.firstFrameHeader);let t=Ke[this.demuxer.firstFrameHeader.samplingFrequencyIndex];return h(t!==void 0),t}getDisposition(){return{...Se}}async getDecoderConfig(){return h(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 i;if(e.metadataOnly)i=de;else{let a=this.demuxer.reader.requestSlice(r.dataStart,r.dataSize);if(a instanceof Promise&&(a=await a),!a)return null;i=B(a,r.dataSize)}return new Q(i,"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 i=Dt(this.demuxer.loadedSamples,t.timestamp,s=>s.timestamp);if(i===-1)throw new Error("Packet was not created from this track.");let a=i+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 i=H(this.demuxer.loadedSamples,t,a=>a.timestamp);if(i===-1&&this.demuxer.loadedSamples.length>0)return null;if(this.demuxer.lastSampleLoaded)return this.getPacketAtIndex(i,e);if(i>=0&&i+1<this.demuxer.loadedSamples.length)return this.getPacketAtIndex(i,e);await this.demuxer.advanceReader()}}finally{r()}}getKeyPacket(t,e){return this.getPacket(t,e)}getNextKeyPacket(t,e){return this.getNextPacket(t,e)}};var ls=n=>n===0?null:n===1?192:n>=2&&n<=5?144*2**n:n===6?"uncommon-u8":n===7?"uncommon-u16":n>=8&&n<=15?2**n:null,zl=(n,t)=>{switch(n){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}},ds=n=>{let t=0,e=new W(B(n,1));for(;e.readBits(1)===1;)t++;if(t===0)return e.readBits(7);let r=[],i=t-1,a=new W(B(n,i)),s=8-t-1;for(let c=0;c<s;c++)r.unshift(e.readBits(1));for(let c=0;c<i;c++)for(let u=0;u<8;u++){let l=a.readBits(1);u<2||r.unshift(l)}return r.reduce((c,u,l)=>c|u<<l,0)},ms=(n,t)=>{if(t==="uncommon-u16")return se(n)+1;if(t==="uncommon-u8")return O(n)+1;if(typeof t=="number")return t;ne(t),h(!1)},Nl=(n,t)=>t==="uncommon-u16"?se(n):t==="uncommon-u16-10"?se(n)*10:t==="uncommon-u8"?O(n):typeof t=="number"?t:null,Ll=n=>{let e=0;for(let r of n){e^=r;for(let i=0;i<8;i++)(e&128)!==0?e=e<<1^7:e<<=1,e&=255}return e};var fs=class extends pe{constructor(e){super(e);this.loadedSamples=[];this.metadataPromise=null;this.trackBacking=null;this.metadataTags={};this.audioInfo=null;this.lastLoadedPos=null;this.blockingBit=null;this.readingMutex=new ve;this.lastSampleLoaded=!1;this.reader=e._reader}async getMetadataTags(){return await this.readMetadata(),this.metadataTags}async getTrackBackings(){return await this.readMetadata(),h(this.trackBacking),[this.trackBacking]}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.`);h(r);let i=O(r),a=lt(r),s=(i&128)!==0;switch(i&127){case 0:{let c=this.reader.requestSlice(e,a);if(c instanceof Promise&&(c=await c),h(c),c===null)throw new Error(`StreamInfo block at position ${e} is too small! Corrupted file.`);let u=B(c,34),l=new W(u),m=l.readBits(16),d=l.readBits(16),f=l.readBits(24),p=l.readBits(24),b=l.readBits(20),g=l.readBits(3)+1;l.readBits(5);let y=l.readBits(36);l.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:g,sampleRate:b,totalSamples:y,minimumBlockSize:m,maximumBlockSize:d,minimumFrameSize:f,maximumFrameSize:p,description:k},this.trackBacking=new fc(this);break}case 4:{let c=this.reader.requestSlice(e,a);c instanceof Promise&&(c=await c),h(c),pn(B(c,a),this.metadataTags);break}case 6:{let c=this.reader.requestSlice(e,a);c instanceof Promise&&(c=await c),h(c);let u=F(c),l=F(c),m=me.decode(B(c,l)),d=F(c),f=me.decode(B(c,d));c.skip(16);let p=F(c),b=B(c,p);this.metadataTags.images??=[],this.metadataTags.images.push({data:b,mimeType:m,kind:u===3?"coverFront":u===4?"coverBack":"unknown",description:f});break}default:break}if(e+=a,s){this.lastLoadedPos=e;break}}if(!this.audioInfo)throw new Error("Missing STREAMINFO metadata block! Corrupted FLAC file.")})()}async readNextFlacFrame({startPos:e,isFirstPacket:r}){h(this.audioInfo);let i=6,a=16,s=10,o=this.audioInfo.maximumBlockSize*this.audioInfo.numberOfChannels*4+a+2,c=this.audioInfo.minimumFrameSize||s,l=(this.audioInfo.maximumFrameSize||o)+a,m=await this.reader.requestSliceRange(e,a,l);if(!m)return null;let d=this.readFlacFrameHeader({slice:m,isFirstPacket:r});if(!d)return null;for(m.filePos=e+c;;){if(m.filePos>m.end-i)return{num:d.num,blockSize:d.blockSize,sampleRate:d.sampleRate,size:m.end-e,isLastFrame:!0};if(O(m)===255){let p=m.filePos,b=O(m),g=this.blockingBit===1?249:248;if(b!==g){m.filePos=p;continue}m.skip(-2);let y=m.filePos-e,k=this.readFlacFrameHeader({slice:m,isFirstPacket:!1});if(!k){m.filePos=p;continue}if(this.blockingBit===0){if(k.num-d.num!==1){m.filePos=p;continue}}else if(k.num-d.num!==d.blockSize){m.filePos=p;continue}return{num:d.num,blockSize:d.blockSize,sampleRate:d.sampleRate,size:y,isLastFrame:!1}}}}readFlacFrameHeader({slice:e,isFirstPacket:r}){let i=e.filePos,a=B(e,4),s=new W(a);if(s.readBits(15)!==32764)return null;if(this.blockingBit===null){h(r);let y=s.readBits(1);this.blockingBit=y}else if(this.blockingBit===1){if(h(!r),s.readBits(1)!==1)return null}else if(this.blockingBit===0){if(h(!r),s.readBits(1)!==0)return null}else throw new Error("Invalid blocking bit");let c=ls(s.readBits(4));if(!c)return null;h(this.audioInfo);let u=zl(s.readBits(4),this.audioInfo.sampleRate);if(!u||(s.readBits(4),s.readBits(3),s.readBits(1)!==0))return null;let m=ds(e),d=ms(e,c),f=Nl(e,u);if(f===null||f!==this.audioInfo.sampleRate)return null;let p=e.filePos-i,b=O(e);e.skip(-p),e.skip(-1);let g=Ll(B(e,p));return b!==g?null:{num:m,blockSize:d,sampleRate:f}}async advanceReader(){await this.readMetadata(),h(this.lastLoadedPos!==null),h(this.audioInfo);let e=this.lastLoadedPos,r=await this.readNextFlacFrame({startPos:e,isFirstPacket:this.loadedSamples.length===0});if(!r){this.lastSampleLoaded=!0;return}let i=this.loadedSamples[this.loadedSamples.length-1],s={blockOffset:i?i.blockOffset+i.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}}},fc=class{constructor(t){this.demuxer=t}getType(){return"audio"}getId(){return 1}getNumber(){return 1}getCodec(){return"flac"}getInternalCodecId(){return null}getNumberOfChannels(){return h(this.demuxer.audioInfo),this.demuxer.audioInfo.numberOfChannels}getSampleRate(){return h(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}getName(){return null}getLanguageCode(){return J}getTimeResolution(){return h(this.demuxer.audioInfo),this.demuxer.audioInfo.sampleRate}isRelativeToUnixEpoch(){return!1}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return h(this.demuxer.audioInfo),this.demuxer.audioInfo.totalSamples===0?null:this.demuxer.audioInfo.totalSamples/this.demuxer.audioInfo.sampleRate}async getLiveRefreshInterval(){return null}getDisposition(){return{...Se}}async getDecoderConfig(){return h(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(h(this.demuxer.audioInfo),t<0)return null;let r=await this.demuxer.readingMutex.acquire();try{for(;;){let i=H(this.demuxer.loadedSamples,t,c=>c.blockOffset/this.demuxer.audioInfo.sampleRate);if(i===-1){await this.demuxer.advanceReader();continue}let a=this.demuxer.loadedSamples[i],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(i,e)}}finally{r()}}async getNextPacket(t,e){let r=await this.demuxer.readingMutex.acquire();try{let i=t.sequenceNumber+1;if(this.demuxer.lastSampleLoaded&&i>=this.demuxer.loadedSamples.length)return null;for(;i>=this.demuxer.loadedSamples.length&&!this.demuxer.lastSampleLoaded;)await this.demuxer.advanceReader();return this.getPacketAtIndex(i,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 i;if(e.metadataOnly)i=de;else{let o=this.demuxer.reader.requestSlice(r.byteOffset,r.byteSize);if(o instanceof Promise&&(o=await o),!o)return null;i=B(o,r.byteSize)}h(this.demuxer.audioInfo);let a=r.blockOffset/this.demuxer.audioInfo.sampleRate,s=r.blockSize/this.demuxer.audioInfo.sampleRate;return new Q(i,"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 ps=n=>{let t="video/MP2T",e=[...new Set(n.filter(Boolean))];return e.length>0&&(t+=`; codecs="${e.join(", ")}"`),t};var ql="PES packet is missing PTS where it was expected. PES packets without PTS are not currently supported. If you think this file should be supported, please report it.",Wl=new Set,hs=class extends pe{constructor(e){super(e);this.metadataPromise=null;this.elementaryStreams=[];this.trackBackingEntries=[];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),h(r);let i=B(r,e);if(i[0]===71&&i[188]===71)this.packetOffset=0,this.packetStride=188;else if(i[0]===71&&i[204]===71)this.packetOffset=0,this.packetStride=204;else if(i[4]===71&&i[196]===71)this.packetOffset=4,this.packetStride=192;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 l=await this.readPacketHeader(s);if(!l)break;if(l.payloadUnitStartIndicator===0){s+=this.packetStride;continue}let m=await this.readSection(s,!0,!u);if(!m)break;let d=3,f=32,p=!1;if(!u&&m.pid!==0&&!(m.payload[0]===0&&m.payload[1]===0&&m.payload[2]===1)){let y=new W(m.payload),k=y.readAlignedByte();y.skipBits(8*k),p=y.readBits(8)===2}if(m.pid===0&&!c){let g=new W(m.payload),y=g.readAlignedByte();g.skipBits(8*y),g.skipBits(14);let k=g.readBits(10);for(g.skipBits(40);8*(k+d)-g.pos>f;){let w=g.readBits(16);g.skipBits(3);let T=g.readBits(13);if(w!==0){if(o!==null)throw new Error("Only files with a single program are supported.");o=T}}if(o===null)throw new Error("Program Association Table must link to a Program Map Table.");c=!0}else if((m.pid===o||p)&&!u){let g=new W(m.payload),y=g.readAlignedByte();g.skipBits(8*y),g.skipBits(12);let k=g.readBits(12);g.skipBits(43);let w=g.readBits(13);g.skipBits(6);let T=g.readBits(10);for(g.skipBits(8*T);8*(k+d)-g.pos>f;){let S=g.readBits(8);g.skipBits(3);let x=g.readBits(13);g.skipBits(6);let P=g.readBits(10),A=g.pos+8*P,C=!1,I=!1;for(;g.pos<A;){let v=g.readBits(8),E=g.readBits(8);v===106?C=!0:(v===122||v===204)&&(I=!0),g.skipBits(8*E)}let R=null;switch(S){case 27:case 36:R={type:"video",codec:S===27?"avc":"hevc",decoderConfig:null,avcCodecInfo:null,hevcCodecInfo:null,colorSpace:{primaries:null,transfer:null,matrix:null,fullRange:null},width:-1,height:-1,squarePixelWidth:-1,squarePixelHeight:-1,reorderSize:-1};break;case 3:case 4:case 15:case 129:case 135:{let v;if(S===3||S===4)v="mp3";else if(S===15)v="aac";else if(S===129)v="ac3";else if(S===135)v="eac3";else throw new Error("Unreachable.");R={type:"audio",codec:v,decoderConfig:null,aacCodecInfo:null,numberOfChannels:-1,sampleRate:-1}}break;case 6:I?R={type:"audio",codec:"eac3",decoderConfig:null,aacCodecInfo:null,numberOfChannels:-1,sampleRate:-1}:C&&(R={type:"audio",codec:"ac3",decoderConfig:null,aacCodecInfo:null,numberOfChannels:-1,sampleRate:-1});break;default:Wl.has(S)||(console.warn(`Note: MPEG-TS streams with stream_type 0x${S.toString(16)} are not currently supported.`),Wl.add(S))}R&&this.elementaryStreams.push({demuxer:this,pid:x,streamType:S,initialized:!1,firstSection:null,canBeTrustedWithKeyPackets:!1,info:R,referencePesPackets:[]})}u=!0}else{let g=this.elementaryStreams.find(y=>y.pid===m.pid);e:if(g&&!g.initialized){let y=Bi(m,!0);if(!y)throw new Error(`Couldn't read first PES packet for Elementary Stream with PID ${g.pid}`);if(g.firstSection=m,g.canBeTrustedWithKeyPackets=m.randomAccessIndicator===1,this.input._initInput){let T=(await this.input._initInput._getDemuxer()).elementaryStreams.find(S=>S.pid===m.pid&&S.info.codec===g.info.codec);if(T){g.info=T.info,g.initialized=!0;break e}}let k=new $r(g,y);if(g.info.type==="video"){for(;;){let w=k;if(w.suppliedPacket=null,await k.markNextPacket(),g.info.codec==="avc"){if(!k.suppliedPacket)throw new Error("Invalid AVC video stream; could not extract AVCDecoderConfigurationRecord from any packet.");if(g.info.avcCodecInfo=ki(k.suppliedPacket.data),!g.info.avcCodecInfo)continue;let T=g.info.avcCodecInfo.sequenceParameterSets[0];h(T);let S=fn(T);g.info.width=S.displayWidth,g.info.height=S.displayHeight;let x=S.pixelAspectRatio.num,P=S.pixelAspectRatio.den;x>0&&P>0&&(x>P?(g.info.squarePixelWidth=Math.round(g.info.width*x/P),g.info.squarePixelHeight=g.info.height):(g.info.squarePixelWidth=g.info.width,g.info.squarePixelHeight=Math.round(g.info.height*P/x))),g.info.colorSpace={primaries:Or[S.colourPrimaries],transfer:Dr[S.transferCharacteristics],matrix:Vr[S.matrixCoefficients],fullRange:!!S.fullRangeFlag},g.info.reorderSize=S.maxDecFrameBuffering;break}else if(g.info.codec==="hevc"){if(!k.suppliedPacket)throw new Error("Invalid HEVC video stream; could not extract HVCDecoderConfigurationRecord from first packet.");if(g.info.hevcCodecInfo=Ti(k.suppliedPacket.data),!g.info.hevcCodecInfo)continue;let S=g.info.hevcCodecInfo.arrays.find(P=>P.nalUnitType===33).nalUnits[0];h(S);let x=Yo(S);g.info.width=x.displayWidth,g.info.height=x.displayHeight,x.pixelAspectRatio.num>x.pixelAspectRatio.den?(g.info.squarePixelWidth=Math.round(g.info.width*x.pixelAspectRatio.num/x.pixelAspectRatio.den),g.info.squarePixelHeight=g.info.height):(g.info.squarePixelWidth=g.info.width,g.info.squarePixelHeight=Math.round(g.info.height*x.pixelAspectRatio.den/x.pixelAspectRatio.num)),g.info.colorSpace={primaries:Or[x.colourPrimaries],transfer:Dr[x.transferCharacteristics],matrix:Vr[x.matrixCoefficients],fullRange:!!x.fullRangeFlag},g.info.reorderSize=x.maxDecFrameBuffering;break}else throw new Error("Unhandled.")}g.info.decoderConfig={codec:gi({width:g.info.width,height:g.info.height,codec:g.info.codec,codecDescription:null,colorSpace:g.info.colorSpace,avcType:1,avcCodecInfo:g.info.avcCodecInfo,hevcCodecInfo:g.info.hevcCodecInfo,vp9CodecInfo:null,av1CodecInfo:null}),codedWidth:g.info.width,codedHeight:g.info.height,colorSpace:g.info.colorSpace},(g.info.width!==g.info.squarePixelWidth||g.info.height!==g.info.squarePixelHeight)&&(g.info.decoderConfig.displayAspectWidth=g.info.squarePixelWidth,g.info.decoderConfig.displayAspectHeight=g.info.squarePixelHeight),g.initialized=!0}else{if(await k.markNextPacket(),!k.suppliedPacket)throw new Error(`Couldn't parse first media packet for Elementary Stream with PID ${g.pid}`);if(g.info.codec==="aac"){let w=he.tempFromBytes(k.suppliedPacket.data),T=Ve(w);if(!T)throw new Error("Invalid AAC audio stream; could not read ADTS frame header from first packet.");g.info.aacCodecInfo={isMpeg2:!1,objectType:T.objectType},g.info.numberOfChannels=St[T.channelConfiguration],g.info.sampleRate=Ke[T.samplingFrequencyIndex]}else if(g.info.codec==="mp3"){let w=F(he.tempFromBytes(k.suppliedPacket.data)),T=Gr(w,k.suppliedPacket.data.byteLength);if(!T.header)throw new Error("Invalid MP3 audio stream; could not read frame header from first packet.");g.info.numberOfChannels=dr(T.header.channel),g.info.sampleRate=T.header.sampleRate}else if(g.info.codec==="ac3"){let w=Oa(k.suppliedPacket.data);if(!w)throw new Error("Invalid AC-3 audio stream; could not read sync frame from first packet.");if(w.fscod===3)throw new Error("Invalid AC-3 audio stream; reserved sample rate code found in first packet.");g.info.numberOfChannels=gn[w.acmod]+w.lfeon,g.info.sampleRate=Kr[w.fscod]}else if(g.info.codec==="eac3"){let w=Da(k.suppliedPacket.data);if(!w)throw new Error("Invalid E-AC-3 audio stream; could not read sync frame from first packet.");let T=Va(w);if(T===null)throw new Error("Invalid E-AC-3 audio stream; reserved sample rate code found in first packet.");g.info.numberOfChannels=Ua(w),g.info.sampleRate=T}else throw new Error("Unhandled.");g.info.decoderConfig={codec:bi({codec:g.info.codec,codecDescription:null,aacCodecInfo:g.info.aacCodecInfo}),numberOfChannels:g.info.numberOfChannels,sampleRate:g.info.sampleRate},g.initialized=!0}}}if(u&&this.elementaryStreams.every(g=>g.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 l of this.elementaryStreams)l.info.type==="video"?this.trackBackingEntries.push(new pc(l)):this.trackBackingEntries.push(new hc(l))})()}async getTrackBackings(){return await this.readMetadata(),this.trackBackingEntries}async getMetadataTags(){return{}}async getMimeType(){await this.readMetadata();let e=await Promise.all(this.trackBackingEntries.map(r=>r.getDecoderConfig().then(i=>i?.codec??null)));return ps(e)}async readSection(e,r,i=!1){let a=e,s=e,o=[],c=0,u=null,l=!0,m=0;for(;;){let f=await this.readPacket(s);if(s+=this.packetStride,!f)break;if(u){if(f.pid!==u.pid){if(i)break;continue}if(f.payloadUnitStartIndicator===1)break}else{if(f.payloadUnitStartIndicator===0)break;u=f}let p=!!(f.adaptationFieldControl&2),b=!!(f.adaptationFieldControl&1),g=0;if(p&&(g=1+f.body[0],f===u&&g>1&&(m=f.body[1]>>6&1)),b&&(g===0?(o.push(f.body),c+=f.body.byteLength):(o.push(f.body.subarray(g)),c+=f.body.byteLength-g)),a=s,!r&&c>=64){l=!1;break}if(Dt(this.sectionEndPositions,a,k=>k)!==-1){l=!1;break}}if(l){let f=H(this.sectionEndPositions,a,p=>p);this.sectionEndPositions.splice(f+1,0,a)}if(!u)return null;let d;if(o.length===1)d=o[0];else{let f=o.reduce((b,g)=>b+g.length,0);d=new Uint8Array(f);let p=0;for(let b of o)d.set(b,p),p+=b.length}return{startPos:e,endPos:r?a:null,pid:u.pid,payload:d,randomAccessIndicator:m}}async readPacketHeader(e){let r=this.reader.requestSlice(e,4);if(r instanceof Promise&&(r=await r),!r)return null;if(O(r)!==71)throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");let a=se(r),s=a>>15,o=a>>14&1,c=a>>13&1,u=a&8191,l=O(r),m=l>>6,d=l>>4&3,f=l&15;return{payloadUnitStartIndicator:o,pid:u,adaptationFieldControl:d}}async readPacket(e){let r=this.reader.requestSlice(e,188);if(r instanceof Promise&&(r=await r),!r)return null;let i=B(r,188);if(i[0]!==71)throw new Error("Invalid TS packet sync byte. Likely an internal bug, please report this file.");let s=(i[1]<<8)+i[2],o=s>>15,c=s>>14&1,u=s>>13&1,l=s&8191,m=i[3],d=m>>6,f=m>>4&3,p=m&15;return{payloadUnitStartIndicator:c,pid:l,adaptationFieldControl:f,body:i.subarray(4)}}},Xr=(n,t)=>{if(n.payload.byteLength<3)return null;let e=new W(n.payload);if(e.readBits(24)!==1)return null;let i=e.readBits(8);if(e.skipBits(16),i===188||i===190||i===191||i===240||i===241||i===255||i===242||i===248)return null;e.skipBits(8);let a=e.readBits(2);e.skipBits(14);let s=null;if(a===2||a===3)s=0,e.skipBits(4),s+=e.readBits(3)*(1<<30),e.skipBits(1),s+=e.readBits(15)*32768,e.skipBits(1),s+=e.readBits(15);else if(t)throw new Error(ql);return{sectionStartPos:n.startPos,sectionEndPos:n.endPos,pts:s,randomAccessIndicator:n.randomAccessIndicator}},Bi=(n,t)=>{h(n.endPos!==null);let e=Xr(n,t);if(!e)return null;let r=new W(n.payload);r.skipBits(32);let i=r.readBits(16),a=6;r.skipBits(16);let s=r.readBits(8),o=r.pos+8*s;r.pos=o;let c=o/8;h(Number.isInteger(c));let u=n.payload.subarray(c,i>0?a+i:n.payload.byteLength);return{...e,data:u}},gs=class n{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 i of t.trackBackingEntries)if(i.getType()===e&&r++,h(i instanceof n),i.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 J}getDisposition(){return{...Se,primary:!1}}getTimeResolution(){return 9e4}isRelativeToUnixEpoch(){return!1}getPairingMask(){return 1n}getBitrate(){return null}getAverageBitrate(){return null}async getDurationFromMetadata(){return null}async getLiveRefreshInterval(){return null}createEncodedPacket(t,e,r){let i;return this.allPacketsAreKeyPackets()?i="key":i=t.randomAccessIndicator===1?"key":"delta",new Q(r.metadataOnly?de:t.data,i,t.pts/9e4,Math.max(e/9e4,0),t.sequenceNumber,t.data.byteLength)}async getFirstPacket(t){let e=this.elementaryStream.firstSection;h(e);let r=Bi(e,!0);h(r);let i=new $r(this.elementaryStream,r),a=new In(this,i),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 l=await r.readNext();if(!l)return null;this.packetBuffers.delete(t);let m=this.createEncodedPacket(l.packet,l.duration,e);return this.packetBuffers.set(m,r),this.packetSectionStarts.set(m,l.packet.sectionStartPos),m}let i=this.packetSectionStarts.get(t);if(i===void 0)throw new Error("Packet was not created from this track.");let s=await this.elementaryStream.demuxer.readSection(i,!0);h(s);let o=Bi(s,!0);h(o);let c=new $r(this.elementaryStream,o);r=new In(this,c);let u=t.sequenceNumber;for(;;){let l=await r.readNext();if(!l)return null;if(l.packet.sequenceNumber>u){let m=this.createEncodedPacket(l.packet,l.duration,e);return this.packetBuffers.set(m,r),this.packetSectionStarts.set(m,l.packet.sectionStartPos),m}}}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 i=Vt(t*9e4),a=this.elementaryStream.demuxer,{reader:s,seekChunkSize:o}=a,c=this.elementaryStream.pid,u=async(T,S,x)=>{let P=T;for(;P<S;){let A=await a.readPacketHeader(P);if(!A)return null;if(A.pid===c&&A.payloadUnitStartIndicator===1){let C=await a.readSection(P,x);if(!C)return null;let I=Xr(C,!1);if(I&&I.pts!==null)return{pesPacketHeader:I,section:C}}P+=a.packetStride}return null},l=this.elementaryStream.firstSection;h(l);let m=Xr(l,!0);if(h(m),i<m.pts)return null;let d,f=this.elementaryStream.referencePesPackets,p=H(f,i,T=>T.pts),b=p!==-1?f[p]:null;if(b&&i-b.pts<9e4/2)d=b.sectionStartPos;else{let T=0;if(s.fileSize!==null){let S=Math.ceil(s.fileSize/o);if(S>1){let x=0,P=S-1;for(T=x;x<=P;){let A=Math.floor((x+P)/2),C=ha(A*o,a.packetStride)+m.sectionStartPos,I=C+o,R=await u(C,I,!1);if(!R){P=A-1;continue}R.pesPacketHeader.pts<=i?(T=A,x=A+1):P=A-1}}}d=ha(T*o,a.packetStride)+m.sectionStartPos}let y=(await u(d,s.fileSize??1/0,!1))?.pesPacketHeader??null;y||(y=m);let k=this.getReorderSize(),w=async(T,S)=>{let x=await a.readSection(T,!0);h(x);let P=Bi(x,!0);h(P);let A=new $r(this.elementaryStream,P),C=new In(this,A);for(;!((X(C.presentationOrderPackets)?.pts??-1/0)>=i||!await C.readNextPacket()););let I=ar(C.presentationOrderPackets,S);if(I===-1)return null;let R=C.presentationOrderPackets[I],v=I===0?0:R.pts-C.presentationOrderPackets[I-1].pts;for(;C.decodeOrderPackets[0]!==R;)C.decodeOrderPackets.shift();C.lastDuration=v;let E=await C.readNext();h(E);let D=this.createEncodedPacket(E.packet,E.duration,r);return this.packetBuffers.set(D,C),this.packetSectionStarts.set(D,E.packet.sectionStartPos),D};if(!e||this.allPacketsAreKeyPackets()){e:for(;;){let T=y.sectionStartPos+a.packetStride;for(;;){let S=await a.readPacketHeader(T);if(!S)break e;if(S.pid===c&&S.payloadUnitStartIndicator===1){let x=await a.readSection(T,!1);if(x){let P=Xr(x,!1);if(P&&P.pts!==null){if(P.pts>i)break e;y=P,gc(this.elementaryStream,y);break}}}T+=a.packetStride}}e:for(let T=0;T<k+1;T++){let S=y.sectionStartPos-a.packetStride;for(;S>=a.packetOffset;){let x=await a.readPacketHeader(S);if(!x)break e;if(x.pid===c&&x.payloadUnitStartIndicator===1){let P=await a.readSection(S,!1);if(P){let A=Xr(P,!1);if(A&&A.pts!==null){y=A;break}}}S-=a.packetStride}}return w(y.sectionStartPos,T=>T.pts<=i)}else{let T=d,S=null,x=!this.elementaryStream.canBeTrustedWithKeyPackets;for(;;){let P=null,A=T<=m.sectionStartPos,C,I=null;if(A)C=m,I=l;else{let E=await u(T,s.fileSize??1/0,x);C=E?.pesPacketHeader??null,I=E?.section??null}let R=!1,v=0;e:for(;C&&!(S!==null&&C.sectionStartPos>=S);){if(C.pts<=i){let D;if(this.elementaryStream.canBeTrustedWithKeyPackets)D=C.randomAccessIndicator===1;else{h(I);let U=Bi(I,!0);h(U);let z=new $r(this.elementaryStream,U);await z.markNextPacket(),D=z.suppliedPacket?.randomAccessIndicator===1}D&&(P=C)}if(C.pts>i&&(R=!0),R&&(v++,v>k))break;let E=C.sectionStartPos+a.packetStride;for(;;){let D=await a.readPacketHeader(E);if(!D)break e;if(D.pid===c&&D.payloadUnitStartIndicator===1){let U=await a.readSection(E,x);if(U){let z=Xr(U,!1);if(z&&z.pts!==null){C=z,I=U,gc(this.elementaryStream,C);break}}}E+=a.packetStride}}if(P){let E=P;if(v===0)e:for(let U=0;U<k;U++){let z=E.sectionStartPos-a.packetStride;for(;z>=a.packetOffset;){let q=await a.readPacketHeader(z);if(!q)break e;if(q.pid===c&&q.payloadUnitStartIndicator===1){let Te=await a.readSection(z,x);if(Te){let we=Xr(Te,!1);if(we&&we.pts!==null){E=we;break}}}z-=a.packetStride}}let D=await w(E.sectionStartPos,U=>U.pts<=i&&U.randomAccessIndicator===1);return h(D),D}if(A)return null;S=T,T=Math.max(ha(T-m.sectionStartPos-o,a.packetStride)+m.sectionStartPos,m.sectionStartPos)}}}},pc=class extends gs{getType(){return"video"}getCodec(){return this.elementaryStream.info.codec}getCodedWidth(){return this.elementaryStream.info.width}getCodedHeight(){return this.elementaryStream.info.height}getSquarePixelWidth(){return this.elementaryStream.info.squarePixelWidth}getSquarePixelHeight(){return this.elementaryStream.info.squarePixelHeight}getRotation(){return 0}async getColorSpace(){return this.elementaryStream.info.colorSpace}async canBeTransparent(){return!1}async getDecoderConfig(){return h(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!1}getReorderSize(){return this.elementaryStream.info.reorderSize}},hc=class extends gs{getType(){return"audio"}getCodec(){return this.elementaryStream.info.codec}getNumberOfChannels(){return this.elementaryStream.info.numberOfChannels}getSampleRate(){return this.elementaryStream.info.sampleRate}async getDecoderConfig(){return h(this.elementaryStream.info.decoderConfig),this.elementaryStream.info.decoderConfig}allPacketsAreKeyPackets(){return!0}getReorderSize(){return 0}},gc=(n,t)=>{let e=n.referencePesPackets,r=H(e,t.sectionStartPos,i=>i.sectionStartPos);if(r>=0){let i=e[r];if(t.pts<=i.pts)return!1;let a=n.demuxer.minReferencePointByteDistance;if(t.sectionStartPos-i.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},$r=class{constructor(t,e){this.currentPos=0;this.pesPackets=[];this.currentPesPacketIndex=0;this.currentPesPacketPos=0;this.endPos=0;this.lastSuppliedPesPacket=null;this.nextPts=null;this.suppliedPacket=null;this.elementaryStream=t,this.pid=t.pid,this.demuxer=t.demuxer,this.startingPesPacket=e}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 h(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 i=X(this.pesPackets).sectionEndPos;for(h(i!==null);;){let a=await this.demuxer.readPacketHeader(i);if(!a)return;if(a.pid===this.pid){let s=await this.demuxer.readSection(i,!0);if(!s)return;let o=Bi(s,!1);if(o){r=o;break}}i+=this.demuxer.packetStride}}this.pesPackets.push(r),this.endPos+=r.data.byteLength}}readBytes(t){let e=this.getCurrentPesPacket(),r=this.currentPos-this.currentPesPacketPos,i=r+t;if(this.currentPos+=t,i<=e.data.byteLength)return e.data.subarray(r,i);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}else for(;;){let e=this.getCurrentPesPacket(),r=this.currentPesPacketPos+e.data.byteLength;if(t<r)break;this.currentPesPacketPos+=e.data.byteLength,this.currentPesPacketIndex++}this.currentPos=t}}skip(t){this.seekTo(this.currentPos+t)}advanceCurrentPacket(){this.currentPesPacketPos+=this.getCurrentPesPacket().data.byteLength,this.currentPesPacketIndex++}async markNextPacket(){h(!this.suppliedPacket);let t=this.elementaryStream;if(t.info.type==="video"){let e=t.info.codec,r=1024;if(e!=="avc"&&e!=="hevc")throw new Error("Unhandled.");let i=null;for(;;){let a=this.ensureBuffered(r);if(a instanceof Promise&&(a=await a),a===0)break;let s=this.currentPos,o=this.readBytes(a),c=o.byteLength,u=0;for(;u<c;){let l=o.indexOf(0,u);if(l===-1||l>=c)break;u=l;let m=s+u;if(u+4>=c){this.seekTo(m);break}let d=o[u+1],f=o[u+2],p=o[u+3],b=0,g=null;if(d===0&&f===0&&p===1?(b=4,g=o[u+4]):d===0&&f===1&&(b=3,g=p),b===0){u++;continue}let y=m;if(i===null){i=y,u+=b;continue}if(g!==null){let k=e==="avc"?qt(g):st(g);if(e==="avc"?k===9:k===35){let T=y-i;return this.seekTo(i),this.supplyPacket(T,0)}}u+=b}if(a<r)break}if(i!==null){let a=this.endPos-i;return this.seekTo(i),this.supplyPacket(a,0)}}else{let e=t.info.codec,r=128;for(;;){let i=this.ensureBuffered(r);i instanceof Promise&&(i=await i);let a=this.currentPos;for(;this.currentPos-a<i;){let s=this.readU8();if(e==="aac"){if(s!==255)continue;this.skip(-1);let o=this.currentPos,c=this.ensureBuffered(He);if(c instanceof Promise&&(c=await c),c<He)return;let u=this.readBytes(He),l=Ve(he.tempFromBytes(u));if(l){this.seekTo(o);let m=this.ensureBuffered(l.frameLength);return m instanceof Promise&&(m=await m),this.supplyPacket(m,Math.round(Cn*9e4/t.info.sampleRate))}else this.seekTo(o+1)}else if(e==="mp3"){if(s!==255)continue;this.skip(-1);let o=this.currentPos,c=this.ensureBuffered(4);if(c instanceof Promise&&(c=await c),c<4)return;let u=this.readBytes(4),l=V(u).getUint32(0),m=Gr(l,null);if(m.header){this.seekTo(o);let d=this.ensureBuffered(m.header.totalSize);d instanceof Promise&&(d=await d);let f=m.header.audioSamplesInFrame*9e4/t.info.sampleRate;return this.supplyPacket(d,Math.round(f))}else this.seekTo(o+1)}else if(e==="ac3"){if(s!==11)continue;this.skip(-1);let o=this.currentPos,c=this.ensureBuffered(5);if(c instanceof Promise&&(c=await c),c<5)return;let u=this.readBytes(5);if(u[0]!==11||u[1]!==119){this.seekTo(o+1);continue}let l=u[4]>>6,m=u[4]&63;if(l===3||m>37){this.seekTo(o+1);continue}let d=ml[3*m+l];h(d!==void 0),this.seekTo(o),c=this.ensureBuffered(d),c instanceof Promise&&(c=await c);let f=Math.round(fl*9e4/t.info.sampleRate);return this.supplyPacket(c,f)}else if(e==="eac3"){if(s!==11)continue;this.skip(-1);let o=this.currentPos,c=this.ensureBuffered(5);if(c instanceof Promise&&(c=await c),c<5)return;let u=this.readBytes(5);if(u[0]!==11||u[1]!==119){this.seekTo(o+1);continue}let m=(((u[2]&7)<<8|u[3])+1)*2,f=u[4]>>6===3?3:u[4]>>4&3,p=Zo[f];this.seekTo(o),c=this.ensureBuffered(m),c instanceof Promise&&(c=await c);let b=p*256,g=Math.round(b*9e4/t.info.sampleRate);return this.supplyPacket(c,g)}else throw new Error("Unhandled.")}if(i<r)break}}}supplyPacket(t,e){let r=this.getCurrentPesPacket(),i;if(this.lastSuppliedPesPacket===r)h(this.nextPts!==null),i=this.nextPts;else{if(r.pts===null)throw new Error(ql);i=r.pts,gc(this.elementaryStream,r)}this.lastSuppliedPesPacket=r,this.nextPts=i+e;let a=r.sectionStartPos,s=a+(this.currentPos-this.currentPesPacketPos),o=this.readBytes(t),c=r.randomAccessIndicator;if(c===0&&!this.elementaryStream.canBeTrustedWithKeyPackets){if(this.elementaryStream.info.type==="audio")c=1;else if(this.elementaryStream.info.decoderConfig){let u=pr(this.elementaryStream.info.codec,this.elementaryStream.info.decoderConfig,o)==="key";c=Number(u)}}this.suppliedPacket={pts:i,data:o,sequenceNumber:s,sectionStartPos:a,randomAccessIndicator:c},this.pesPackets.splice(0,this.currentPesPacketIndex),this.currentPesPacketIndex=0}},In=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(),h(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);h(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 i=this.presentationOrderPackets[0];if(this.decodeOrderPackets.includes(i))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 this.context.markNextPacket(),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(h(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 i=1;i<this.reorderBuffer.length;i++)this.reorderBuffer[i].pts<this.reorderBuffer[e].pts&&(e=i);let r=this.reorderBuffer[e];this.presentationOrderPackets.push(r),this.reorderBuffer.splice(e,1)}}flushReorderBuffer(){this.reorderBuffer.sort((t,e)=>t.pts-e.pts),this.presentationOrderPackets.push(...this.reorderBuffer),this.reorderBuffer.length=0}};var xt="application/vnd.apple.mpegurl",bc="#EXT-X-STREAM-INF:",yc="#EXT-X-I-FRAME-STREAM-INF:",kc="#EXT-X-MEDIA:",En="#EXTINF:",Tc="#EXT-X-MAP:",wc="#EXT-X-KEY:",Sc="#EXT-X-MEDIA-SEQUENCE:",Ac="#EXT-X-BYTERANGE:",xc="#EXT-X-PROGRAM-DATE-TIME:",Gl="#EXT-X-DISCONTINUITY",Pc="#EXT-X-TARGETDURATION:",Kl="#EXT-X-ENDLIST",Cc="#EXT-X-PLAYLIST-TYPE:",Ql="#EXT-X-I-FRAMES-ONLY",bs=n=>n.length===0||n.startsWith("#")&&!n.startsWith("#EXT"),Jt=class{constructor(t){this._attributes={};let e="",r="",i=!1,a=!1;for(let s=0;s<t.length;s++){let o=t[s];o==='"'?a=!a:o==="="&&!i&&!a?i=!0:o===","&&!a?(e&&(this._attributes[e.trim().toLowerCase()]=r),e="",r="",i=!1):i?r+=o:e+=o}e&&(this._attributes[e.trim().toLowerCase()]=r)}get(t){return this._attributes[t.toLowerCase()]??null}getAsNumber(t){let e=this.get(t);if(e===null)return null;let r=Number(e);return Number.isFinite(r)?r:null}merge(t){Object.assign(this._attributes,t._attributes)}};var ys=class{constructor(t,e,r){this.nextInputCacheAge=0;this.inputCache=[];this.trackBackingsPromise=null;this.firstSegment=null;this.firstSegmentFirstTimestamps=new WeakMap;this.firstTimestampCache=new WeakMap;this.input=t,this.path=e,this.trackDeclarations=r}async getDurationFromMetadata(t){let e=await this.getSegmentAt(1/0,{skipLiveWait:t.skipLiveWait});return e?e.timestamp+e.duration:null}async getTrackBackings(){return this.trackBackingsPromise??=(async()=>{let t=[];if(this.trackDeclarations){for(let e of this.trackDeclarations)if(e.type==="video"){let r=Hr(t,i=>i.getType()==="video")+1;t.push(new Ts(this,e,r))}else if(e.type==="audio"){let r=Hr(t,i=>i.getType()==="audio")+1;t.push(new ws(this,e,r))}}else{if(this.firstSegment=await this.getFirstSegment({}),!this.firstSegment)return[];let r=await this.getInputForSegment(this.firstSegment).getTracks();for(let i of r)if(i.type==="video"){let a=Hr(t,s=>s.getType()==="video")+1;t.push(new Ts(this,{id:t.length+1,type:"video"},a))}else if(i.type==="audio"){let a=Hr(t,s=>s.getType()==="audio")+1;t.push(new ws(this,{id:t.length+1,type:"audio"},a))}}return t})()}async getFirstTimestampForInput(t){let e=this.firstTimestampCache.get(t);if(e!==void 0)return e;let r=await t.getFirstTimestamp();return this.firstTimestampCache.set(t,r),r}async getMediaOffset(t,e){let r=t.firstSegment??t,i;if(this.firstSegmentFirstTimestamps.has(r))i=this.firstSegmentFirstTimestamps.get(r);else{let u=this.getInputForSegment(r);i=await this.getFirstTimestampForInput(u),this.firstSegmentFirstTimestamps.set(r,i)}if(r===t)return r.timestamp-i;let a=await this.getFirstTimestampForInput(e),s=t.timestamp-r.timestamp,c=a-i-s;return Math.abs(c)<=Math.min(.25,s)?r.timestamp-i:t.timestamp-a}dispose(){for(let t of this.inputCache)t.input.dispose();this.inputCache.length=0}},ks=class{constructor(t,e,r){this.packetInfos=new WeakMap;this.hydrationPromise=null;this.firstInputTrack=null;this.segmentedInput=t,this.decl=e,this.number=r}hydrate(){return this.hydrationPromise??=(async()=>{if(this.segmentedInput.firstSegment??=await this.segmentedInput.getFirstSegment({}),!this.segmentedInput.firstSegment)throw new Error("Missing first segment, can't retrieve track.");let r=(await this.segmentedInput.getInputForSegment(this.segmentedInput.firstSegment).getTracks()).find(i=>i.type===this.decl.type&&i.number===this.number);if(!r)throw new Error("No matching track found in underlying media data.");this.firstInputTrack=r})()}getId(){return this.decl.id}getType(){return this.decl.type}getNumber(){return this.number}delegate(t){return this.firstInputTrack?t():this.hydrate().then(t)}async getDecoderConfig(){return this.delegate(()=>this.firstInputTrack._backing.getDecoderConfig())}getHasOnlyKeyPackets(){return this.delegate(()=>this.firstInputTrack._backing.getHasOnlyKeyPackets?.()??null)}getPairingMask(){return 1n}getCodec(){return this.delegate(()=>this.firstInputTrack._backing.getCodec())}getInternalCodecId(){return this.delegate(()=>this.firstInputTrack._backing.getInternalCodecId())}getDisposition(){return this.delegate(()=>this.firstInputTrack._backing.getDisposition())}getLanguageCode(){return this.delegate(()=>this.firstInputTrack._backing.getLanguageCode())}getName(){return this.delegate(()=>this.firstInputTrack._backing.getName())}getTimeResolution(){return this.delegate(()=>this.firstInputTrack._backing.getTimeResolution())}async isRelativeToUnixEpoch(){return await this.hydrate(),h(this.segmentedInput.firstSegment),this.segmentedInput.firstSegment.relativeToUnixEpoch}getBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getBitrate())}getAverageBitrate(){return this.delegate(()=>this.firstInputTrack._backing.getAverageBitrate())}getDurationFromMetadata(t){return this.segmentedInput.getDurationFromMetadata(t)}getLiveRefreshInterval(){return this.segmentedInput.getLiveRefreshInterval()}async createAdjustedPacket(t,e,r){h(t.sequenceNumber>=0),h(this.segmentedInput.firstSegment);let i=await this.segmentedInput.getMediaOffset(e,r.input),a=e.timestamp-this.segmentedInput.firstSegment.timestamp,s=t.clone({timestamp:Tt(t.timestamp+i,await r.getTimeResolution()),sequenceNumber:Math.floor(1e8*a)+t.sequenceNumber});return this.packetInfos.set(s,{segment:e,track:r,sourcePacket:t}),s}async getFirstPacket(t){await this.hydrate(),h(this.segmentedInput.firstSegment),h(this.firstInputTrack);let e=await this.firstInputTrack._backing.getFirstPacket(t);return e?this.createAdjustedPacket(e,this.segmentedInput.firstSegment,this.firstInputTrack):null}getNextPacket(t,e){return this._getNextInternal(t,e,!1)}getNextKeyPacket(t,e){return 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a=this.options.prefetchProfile(t,e,this.workers),s=Math.max(a.start,r),o=Math.min(a.end,this.fileSize??1/0,i);h(s<=t&&e<=o);let c=null,u=H(this.cache,t,S=>S.start),l=u!==-1?this.cache[u]:null;l&&l.start<=t&&e<=l.end&&(l.age=this.nextAge++,c={bytes:l.bytes,view:l.view,offset:l.start});let m=H(this.cache,s,S=>S.start),d=c?null:new Uint8Array(e-t),f=0,p=s,b=[];if(m!==-1){for(let S=m;S<this.cache.length;S++){let x=this.cache[S];if(x.start>=o)break;if(x.end<=s)continue;let P=Math.max(s,x.start),A=Math.min(o,x.end);if(h(P<=A),p<P&&b.push({start:p,end:P}),p=A,d){let C=Math.max(t,x.start),I=Math.min(e,x.end);if(C<I){let R=C-t;d.set(x.bytes.subarray(C-x.start,I-x.start),R),R===f&&(f=I-t)}}x.age=this.nextAge++}p<o&&b.push({start:p,end:o})}else b.push({start:s,end:o});if(d&&f>=d.length&&(c={bytes:d,view:V(d),offset:t}),b.length===0)return h(c),c;let{promise:g,resolve:y,reject:k}=Z(),w=[];for(let S of b){let x=Math.max(t,S.start),P=Math.min(e,S.end);x===S.start&&P===S.end?w.push(S):x<P&&w.push({start:x,end:P})}let T=d&&{start:t,bytes:d,holes:w,resolve:y,reject:k};e:for(let S of b){for(let A of this.workers)if(this.checkHoleAgainstWorker(A,S,T?[T]:[])){this.checkQueuedReadsAgainstWorker(A);continue e}let x=S.end<o||this.fileSize!==null,P=this.createWorker(S.start,S.end,x);if(P)T&&(P.pendingSlices=[T]),this.runWorker(P);else{let A=H(this.queuedReads,S.start,I=>I.hole.start),C=A!==-1?this.queuedReads[A]:null;for(C&&S.start<=C.hole.end?(C.hole.end=Math.max(C.hole.end,S.end),C.strictTarget&&=x,T&&C.pendingSlices.push(T)):(A++,C={hole:{start:S.start,end:S.end},strictTarget:x,pendingSlices:T?[T]:[],age:this.nextAge++},this.queuedReads.splice(A,0,C));A+1<this.queuedReads.length;){let I=this.queuedReads[A+1];if(I.hole.start>C.hole.end)break;C.hole.end=Math.max(C.hole.end,I.hole.end),C.pendingSlices.push(...I.pendingSlices),C.strictTarget&&=I.strictTarget,C.age=Math.min(C.age,I.age),this.queuedReads.splice(A+1,1)}}}return c||(h(d),c=g.then(S=>S&&{bytes:S,view:V(S),offset:t})),c}checkHoleAgainstWorker(t,e,r){if(ga(e.start-131072,e.start,t.currentPos,t.targetPos)){t.targetPos=Math.max(t.targetPos,e.end);for(let a=0;a<r.length;a++){let s=r[a];t.pendingSlices.includes(s)||t.pendingSlices.push(s)}return t.running||this.runWorker(t),!0}return!1}checkQueuedReadsAgainstWorker(t){let e=!1;for(let r=0;r<this.queuedReads.length;r++){let i=this.queuedReads[r];if(this.checkHoleAgainstWorker(t,i.hole,i.pendingSlices))this.queuedReads.splice(r,1),r--,e=!0;else if(e)break}}createWorker(t,e,r){if(this.workers.length>=this.options.maxWorkerCount){let a=null,s=null;for(let o=0;o<this.workers.length;o++){let c=this.workers[o];!c.running&&c.pendingSlices.length===0&&(!a||c.age<a.age)&&(s=o,a=c)}if(a)h(s!==null),h(a.pendingSlices.length===0),this.workers.splice(s,1);else return null}let i={startPos:t,currentPos:t,targetPos:e,strictTarget:r,running:!1,aborted:this.disposed,pendingSlices:[],age:this.nextAge++};return this.workers.push(i),i}runWorker(t){h(!t.running),h(t.currentPos<t.targetPos),t.running=!0,t.age=this.nextAge++,this.options.runWorker(t).catch(e=>{if(t.running=!1,t.pendingSlices.length>0)t.pendingSlices.forEach(r=>r.reject(e)),t.pendingSlices.length=0;else throw e}).finally(()=>{if(!t.running&&this.queuedReads.length>0){let e=0;for(let a=1;a<this.queuedReads.length;a++)this.queuedReads[a].age<this.queuedReads[e].age&&(e=a);let r=this.queuedReads[e];this.queuedReads.splice(e,1);let i=this.createWorker(r.hole.start,r.hole.end,r.strictTarget);h(i),i.pendingSlices=r.pendingSlices,this.runWorker(i)}})}consolidateEverythingIntoOneWorker(t){let e=new Set(t.pendingSlices);for(let r=0;r<this.workers.length;r++){let i=this.workers[r];if(i!==t){for(let a of i.pendingSlices)e.add(a);i.aborted=!0,i.pendingSlices.length=0,this.workers.splice(r,1),r--}}for(let r=0;r<this.queuedReads.length;r++){let i=this.queuedReads[r];for(let a of i.pendingSlices)e.add(a)}t.pendingSlices=[...e],this.queuedReads.length=0}supplyWorkerData(t,e){h(!t.aborted);let r=t.currentPos,i=r+e.length;this.insertIntoCache({start:r,end:i,bytes:e,view:V(e),age:this.nextAge++}),t.currentPos+=e.length,t.currentPos>t.targetPos&&(t.targetPos=t.currentPos,this.checkQueuedReadsAgainstWorker(t));for(let a=0;a<t.pendingSlices.length;a++){let s=t.pendingSlices[a],o=Math.max(r,s.start),c=Math.min(i,s.start+s.bytes.length);o<c&&s.bytes.set(e.subarray(o-r,c-r),o-s.start);for(let u=0;u<s.holes.length;u++){let l=s.holes[u];r<=l.start&&i>l.start&&(l.start=i),l.end<=l.start&&(s.holes.splice(u,1),u--)}s.holes.length===0&&(s.resolve(s.bytes),t.pendingSlices.splice(a,1),a--)}for(let a=0;a<this.workers.length;a++){let s=this.workers[a];t===s||s.running||ga(r,i,s.currentPos,s.targetPos)&&(this.workers.splice(a,1),a--)}}supplyFileSize(t){h(this.fileSize===null),this.fileSize=t;for(let e of this.workers){e.targetPos=Math.min(e.targetPos,t),e.strictTarget=!0;for(let r=0;r<e.pendingSlices.length;r++){let i=e.pendingSlices[r];for(let a of i.holes)if(a.end>t){i.resolve(null),e.pendingSlices.splice(r,1),r--;break}}}for(let e=0;e<this.queuedReads.length;e++){let r=this.queuedReads[e];if(r.hole.start>=t){for(let i of r.pendingSlices)i.resolve(null);this.queuedReads.splice(e,1),e--}else if(r.hole.end>t){r.hole.end=t,r.strictTarget=!0;for(let i=0;i<r.pendingSlices.length;i++){let a=r.pendingSlices[i];a.start>=t&&(a.resolve(null),r.pendingSlices.splice(i,1),i--)}}}}signalWorkerStoppedRunning(t){t.running=!1,t.pendingSlices.length=0}onWorkerFinished(t){let e=this.workers.indexOf(t);h(e!==-1),t.running=!1,this.workers.splice(e,1),this.fileSize===null&&this.supplyFileSize(t.currentPos);for(let r of t.pendingSlices)r.resolve(null)}insertIntoCache(t){if(this.options.maxCacheSize===0)return;let e=H(this.cache,t.start,r=>r.start)+1;if(e>0){let r=this.cache[e-1];if(r.end>=t.end)return;if(r.end>t.start){let i=new Uint8Array(t.end-r.start);i.set(r.bytes,0),i.set(t.bytes,t.start-r.start),this.currentCacheSize+=t.end-r.end,r.bytes=i,r.view=V(i),r.end=t.end,e--,t=r}else this.cache.splice(e,0,t),this.currentCacheSize+=t.bytes.length}else this.cache.splice(e,0,t),this.currentCacheSize+=t.bytes.length;for(let r=e+1;r<this.cache.length;r++){let i=this.cache[r];if(t.end<=i.start)break;if(t.end>=i.end){this.cache.splice(r,1),this.currentCacheSize-=i.bytes.length,r--;continue}let a=new Uint8Array(i.end-t.start);a.set(t.bytes,0),a.set(i.bytes,i.start-t.start),this.currentCacheSize-=t.end-i.start,t.bytes=a,t.view=V(a),t.end=i.end,this.cache.splice(r,1);break}for(;this.currentCacheSize>this.options.maxCacheSize;){let r=0,i=this.cache[0];for(let a=1;a<this.cache.length;a++){let s=this.cache[a];s.age<i.age&&(r=a,i=s)}if(this.currentCacheSize-i.bytes.length<=this.options.maxCacheSize)break;this.cache.splice(r,1),this.currentCacheSize-=i.bytes.length}}dispose(){for(let t of this.workers)t.aborted=!0;this.workers.length=0,this.cache.length=0,this.disposed=!0}};var _n=class extends Ie{constructor(e,r,i){super();this._ref=null;if(e._disposed)throw new Error("Cannot create a slice of a disposed source.");this._baseSource=e,this._offset=r,this._length=i??null}_getFileSize(){let e=this._baseSource._getFileSize();return e===void 0?this._length!==null?this._length:void 0:e===null?this._length!==null?this._length:null:ue(e-this._offset,0,this._length??1/0)}_read(e,r,i,a){if(this._length!==null&&r>this._length)return null;let s=this._baseSource._read(this._offset+e,this._offset+r,this._offset+i,this._offset+a);return s instanceof Promise?s.then(o=>o?(o.offset-=this._offset,o):null):s?(s.offset-=this._offset,s):null}_dispose(){this._ref?.free()}ref(){return this._ref??=this._baseSource.ref(),super.ref()}};var tf=/^0[xX][0-9a-fA-F]+$/,rf=/^data:.*;base64,/i,Rn=class extends ys{constructor(e,r,i,a){super(e.input,r,i);this.segments=[];this.nextLines=null;this.currentUpdateSegmentsPromise=null;this.streamHasEnded=!1;this.lastSegmentUpdateTime=-1/0;this.refreshInterval=5;this.demuxer=e,this.nextLines=a}runUpdateSegments(){return this.currentUpdateSegmentsPromise??=(async()=>{try{let e=this.getRemainingWaitTimeMs();e>0&&await cn(e),this.lastSegmentUpdateTime=performance.now(),await this.updateSegments()}finally{this.currentUpdateSegmentsPromise=null}})()}getRemainingWaitTimeMs(){let e=performance.now()-this.lastSegmentUpdateTime,r=Math.max(0,1e3*this.refreshInterval-e);return r<=50?0:r}async updateSegments(){let e=this.nextLines;if(this.nextLines=null,!e){var k=[];try{let x=tn(k,await this.demuxer.input._getSourceUncached({path:this.path,isRoot:!1}));let P=new kr(x.source);let A=await P.requestEntireFile();h(A);e=Cs(A,A.length,{ignore:bs})}catch(w){var T=w,S=!0}finally{rn(k,T,S)}}let r=!1,i=0,a=null,s=null,o=0,c=null,u=null,l=null,m=null,d=null,f=null,p=!1,b=X(this.segments)??null,g=x=>{let P=x.indexOf("@"),A=Number(P===-1?x:x.slice(0,P));if(!Number.isInteger(A)||A<0)throw new Error(`Invalid #EXT-X-BYTERANGE length '${x}'.`);let C=null;if(P!==-1&&(C=Number(x.slice(P+1)),!Number.isInteger(C)||C<0))throw new Error(`Invalid #EXT-X-BYTERANGE offset '${x}'.`);return{length:A,offset:C}},y=x=>{o=x,b&&(h(b.sequenceNumber!==null),b.sequenceNumber<x&&(i=b.timestamp+b.duration,c=b.firstSegment,u=b.initSegment,d=b.lastProgramDateTimeSeconds,b=null))};for(let x=0;x<e.length;x++){let P=e[x];if(!r){if(P!=="#EXTM3U")throw new Error("Invalid M3U8 file; expected first line to be #EXTM3U.");r=!0;continue}if(!P.startsWith("#")){if(!b){if(a===null)throw new Error("Invalid M3U8 file; a segment must be preceded by an #EXTINF tag.");let A=s;if(A&&A.method==="AES-128"&&!A.iv){let v=new Uint8Array(ut),E=V(v);E.setUint32(8,Math.floor(o/2**32)),E.setUint32(12,o),A={...A,iv:v}}let I={path:fe(this.path,P),offset:m?.offset??0,length:m?.length??null},R={timestamp:i,relativeToUnixEpoch:d!==null,firstSegment:c,sequenceNumber:o,location:I,duration:a,encryption:A,initSegment:u,lastProgramDateTimeSeconds:d};c??=R,i+=a,this.segments.push(R)}a=null,m===null?l=null:m=null,y(o+1)}if(P.startsWith(En)){if(b){p=!0;continue}p||(d===null&&o>0&&f!==null&&(i=o*f),p=!0);let A=P.slice(En.length),C=A.indexOf(","),I=C===-1?A:A.slice(0,C),R=Number(I);if(!Number.isFinite(R)||R<0)throw new Error(`Invalid #EXTINF tag duration '${I}'.`);a=R}else if(P.startsWith(Tc)){let A=new Jt(P.slice(Tc.length)),C=A.get("uri");if(!C)throw new Error("Invalid #EXT-X-MAP tag; missing URI attribute.");let I=A.get("byterange"),R=null;if(I!==null&&(R=g(I)),R&&R.offset===null)throw new Error("Invalid #EXT-X-MAP tag; BYTERANGE attribute must have a specified offset.");if(!b){let E={path:fe(this.path,C),offset:R?.offset??0,length:R?.length??null};if(s?.method==="AES-128"&&!s.iv)throw new Error("IV attribute must be set on #EXT-X-KEY tag preceding the #EXT-X-MAP tag.");u={timestamp:i,relativeToUnixEpoch:d!==null,firstSegment:null,sequenceNumber:null,location:E,duration:0,encryption:s,initSegment:null,lastProgramDateTimeSeconds:d}}a=null,m===null?l=null:m=null}else if(P.startsWith(wc)){let A=new Jt(P.slice(wc.length)),C=A.get("method");if(C==="NONE")s=null;else if(C==="AES-128"){let I=A.get("uri");if(!I)throw new Error("Invalid #EXT-X-KEY: AES-128 requires a URI attribute.");let R=null,v=A.get("iv");if(v){if(!tf.test(v))throw new Error(`Unsupported IV format '${v}'.`);let D=v.slice(2);D=D.padStart(ut*2,"0"),R=new Uint8Array(ut);for(let U=0;U<ut;U++){let z=-ut*2+U;R[U]=parseInt(D.slice(z,z+2),16)}}let E=A.get("keyformat")??"identity";if(E!=="identity")throw new Error("For AES-128 encryption, only the 'identity' KEYFORMAT is currently supported. If you think other formats should be supported, please raise an issue.");s={method:"AES-128",keyUri:fe(this.path,I),iv:R,keyFormat:E}}else if(C==="SAMPLE-AES"||C==="SAMPLE-AES-CTR"){let I=A.get("uri");if(!I)throw new Error(`Invalid #EXT-X-KEY: ${C} requires a URI attribute.`);if((A.get("keyformat")??"identity")==="identity")throw new Error("For SAMPLE-AES and SAMPLE-AES-CTR encryption, the 'identity' KEYFORMAT is not supported. If you think this format should be supported, please raise an issue.");let v=null;if(rf.test(I)){let E=I.indexOf(","),D=Wr(I.slice(E+1));if(D.length>=8&&D[4]===112&&D[5]===115&&D[6]===115&&D[7]===104){let U=V(D).getUint32(0);v=Na(D.subarray(8,Math.min(U,D.length)))}}s={method:C,psshBox:v}}else throw new Error(`Unsupported encryption method '${C}'. If you think this method should be supported, please raise an issue.`)}else if(P.startsWith(Sc)){let A=P.slice(Sc.length),C=Number(A);if(!Number.isInteger(C)||C<0)throw new Error(`Invalid EXT-X-MEDIA-SEQUENCE value '${A}'.`);y(C)}else if(P.startsWith(Ac)){let A=g(P.slice(Ac.length));if(A.offset===null){if(l===null)throw new Error("Invalid M3U8 file; #EXT-X-BYTERANGE without offset requires a previous byte range.");A.offset=l}m=A,l=A.offset+A.length}else if(P.startsWith(xc)){if(b)continue;let A=P.slice(xc.length),C=Date.parse(A);if(!Number.isFinite(C))continue;let I=C/1e3;if(d===I)continue;if(d===null&&this.segments.length>0){let R=X(this.segments),v=R.timestamp+R.duration,E=I-v;for(let D of this.segments)D.timestamp+=E,D.relativeToUnixEpoch=!0;i+=E}d=I,i=I}else if(P===Gl)c=null;else if(P.startsWith(Pc)){let A=P.slice(Pc.length),C=Number(A);if(!Number.isFinite(C)||C<0)throw new Error(`Invalid EXT-X-TARGETDURATION value '${A}'.`);this.refreshInterval=C,f=C}else if(P===Kl){this.streamHasEnded=!0;break}else P.startsWith(Cc)&&P.slice(Cc.length).toLowerCase()==="vod"&&(this.streamHasEnded=!0)}if(!r)throw new Error("Invalid M3U8 file; no #EXTM3U header.")}async getFirstSegment(){return this.segments.length===0&&await this.runUpdateSegments(),this.segments[0]??null}async getSegmentAt(e,r){this.segments.length===0&&await this.runUpdateSegments();let i=!!r.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){let a=H(this.segments,e,o=>o.timestamp);if(a===-1)return null;if(a<this.segments.length-1||this.streamHasEnded||i)return this.segments[a];let s=this.segments[a];if(e<s.timestamp+s.duration)return s;await this.runUpdateSegments(),r.skipLiveWait&&(i=!0)}}async getNextSegment(e,r){let i=this.segments.indexOf(e);h(i!==-1);let a=i+1,s=!!r.skipLiveWait&&this.getRemainingWaitTimeMs()>0;for(;;){if(a<this.segments.length)return this.segments[a];if(this.streamHasEnded||s)return null;await this.runUpdateSegments(),r.skipLiveWait&&(s=!0)}}async getPreviousSegment(e){let r=this.segments.indexOf(e);return h(r!==-1),this.segments[r-1]??null}getInputForSegment(e){let r=e,i=this.inputCache.find(u=>u.segment===r);if(i)return i.age=this.nextInputCacheAge++,i.input;let a=null;(r.initSegment||r.firstSegment)&&(a=this.getInputForSegment(r.initSegment??r.firstSegment));let s={...this.input._formatOptions,isobmff:{...this.input._formatOptions.isobmff,resolveKeyId:this.input._formatOptions.isobmff?.resolveKeyId&&(u=>{if(!r.encryption||!(r.encryption.method==="SAMPLE-AES"||r.encryption.method==="SAMPLE-AES-CTR")||!r.encryption.psshBox)return this.input._formatOptions.isobmff.resolveKeyId(u);let l=u.psshBoxes,{psshBox:m}=r.encryption;return(m.keyIds===null||m.keyIds.includes(u.keyId))&&!l.some(d=>La(d,m))&&(l=[...l,m]),this.input._formatOptions.isobmff.resolveKeyId({...u,psshBoxes:l})})}},o=new Tr({source:new Oi(r.location.path,async u=>{h(u.isRoot);let l={...u,isRoot:!1},m,d=r.location.offset>0||r.location.length!==null;if(!r.encryption||r.encryption.method==="SAMPLE-AES"||r.encryption.method==="SAMPLE-AES-CTR"){if(m=await this.input._getSourceCached(l),d){let p=m.source.slice(r.location.offset,r.location.length??void 0).ref();m.free(),m=p}}else if(r.encryption.method==="AES-128"){let f=r.encryption;h(f.iv);let p=await this.input._getSourceCached(l);if(d){let k=p.source.slice(r.location.offset,r.location.length??void 0).ref();p.free(),p=k}let b=new kr(p.source),g=yl(b,async()=>{var S=[];try{let y=tn(S,await this.input._getSourceCached({path:f.keyUri,isRoot:!1},Zl));let k=new kr(y.source);let w=await k.requestSlice(0,ut);if(!w)throw new Error("Invalid AES-128 key; expected at least 16 bytes of data.");let T=B(w,ut);return{key:T,iv:f.iv}}catch(x){var P=x,A=!0}finally{rn(S,P,A)}},()=>{p.free()});m=new Vi(g).ref()}else h(!1);return m}),formats:this.input._formats.filter(u=>!(u instanceof Yr)),initInput:a??void 0,formatOptions:s});if(o._onFormatDetermined=u=>{if((r.encryption?.method==="SAMPLE-AES"||r.encryption?.method==="SAMPLE-AES-CTR")&&!u._isIsobmff)throw new Error("The SAMPLE-AES and SAMPLE-AES-CTR encryption methods are currently only supported for ISOBMFF files.")},this.inputCache.push({segment:r,input:o,age:this.nextInputCacheAge++}),this.inputCache.length>4){let u=pi(this.inputCache,l=>l.age);h(u!==-1),this.inputCache.splice(u,1)}return o}async getLiveRefreshInterval(){return this.getRemainingWaitTimeMs()===0&&await this.runUpdateSegments(),this.streamHasEnded?null:this.refreshInterval}};var Es=class extends pe{constructor(e){super(e);this.metadataPromise=null;this.trackBackings=null;this.internalTracks=null;this.segmentedInputs=[];this.hasMasterPlaylist=!0}readMetadata(){return this.metadataPromise??=(async()=>{h(this.input._rootSource instanceof qe);let{rootPath:e}=this.input._rootSource,r=await this.input._reader.requestEntireFile();h(r);let i=Cs(r,r.length,{ignore:bs}),a=[],s=[];for(let d=1;d<i.length;d++){let f=i[d];if(f.startsWith(bc)){let p=d,b=i[++d];if(b===void 0)throw new Error("Incorrect M3U8 file; a line must follow the #EXT-X-STREAM-INF tag.");let g=fe(e,b),y=new Jt(f.slice(bc.length));if(y.getAsNumber("bandwidth")===null)throw new Error("Invalid M3U8 file; #EXT-X-STREAM-INF tag requires a BANDWIDTH attribute with a valid numerical value.");a.push({fullPath:g,attributes:y,lineNumber:p,hasOnlyKeyPackets:!1})}else if(f.startsWith(yc)){let p=new Jt(f.slice(yc.length)),b=p.get("uri");if(b===null)throw new Error("Invalid M3U8 file; #EXT-X-I-FRAME-STREAM-INF tag requires a URI attribute.");if(p.getAsNumber("bandwidth")===null)throw new Error("Invalid M3U8 file; #EXT-X-I-FRAME-STREAM-INF tag requires a BANDWIDTH attribute with a valid numerical value.");let y=fe(e,b);a.push({fullPath:y,attributes:p,lineNumber:d,hasOnlyKeyPackets:!0})}else if(f.startsWith(kc)){let p=new Jt(f.slice(kc.length));if(p.get("type")===null)throw new Error("Invalid M3U8 file; #EXT-X-MEDIA tag requires a TYPE attribute.");if(p.get("group-id")===null)throw new Error("Invalid M3U8 file; #EXT-X-MEDIA tag requires a GROUP-ID attribute.");let y=null,k=p.get("uri");k!==null&&(y=fe(e,k)),s.push({fullPath:y,attributes:p,lineNumber:d})}else if(f!==Ql){if(f.startsWith(En)){let p=new Rn(this,e,null,i);this.segmentedInputs=[p],this.hasMasterPlaylist=!1,this.trackBackings=await p.getTrackBackings();return}}}let o=[...new Set(s.filter(d=>d.attributes.get("type").toLowerCase()==="video").map(d=>d.attributes.get("group-id")))],c=[...new Set(s.filter(d=>d.attributes.get("type").toLowerCase()==="audio").map(d=>d.attributes.get("group-id")))],u=await Promise.all(a.map(async(d,f)=>{let p=[],b=d.attributes.get("codecs"),g;if(b)g=b.split(",").map(I=>I.trim());else{let R=await this.getSegmentedInputForPath(d.fullPath).getTrackBackings(),v=await Promise.all(R.map(async E=>({track:E,codec:await E.getCodec()})));g=await Promise.all(v.filter(E=>E.codec!==null).map(E=>E.track.getDecoderConfig().then(D=>D.codec)))}let y=d.attributes.get("video"),k=d.attributes.get("audio"),w=g.some(I=>te.includes(Qe(I))),T=g.some(I=>ae.includes(Qe(I)));if(y!==null&&!w){if(!o.includes(y))throw new Error(`Invalid M3U8 file; variant stream references video group "${y}" which is not defined in any #EXT-X-MEDIA tags.`);let I=s.find(R=>{let v=R.attributes.get("group-id"),E=R.attributes.get("type");return v===y&&E.toLowerCase()==="video"});e:if(I){let R=I.attributes.get("uri");if(R===null)break e;let v=fe(e,R),U=(await this.getSegmentedInputForPath(v).getTrackBackings()).find(q=>q.getType()==="video");if(!U||await U.getCodec()===null)break e;let z=await U.getDecoderConfig().then(q=>q?.codec??null);h(z!==null),g.push(z)}}if(k!==null&&!T){if(!c.includes(k))throw new Error(`Invalid M3U8 file; variant stream references audio group "${k}" which is not defined in any #EXT-X-MEDIA tags.`);let I=s.find(R=>{let v=R.attributes.get("group-id"),E=R.attributes.get("type");return v===k&&E.toLowerCase()==="audio"});e:if(I){let R=I.attributes.get("uri");if(R===null)break e;let v=fe(e,R),U=(await this.getSegmentedInputForPath(v).getTrackBackings()).find(q=>q.getType()==="audio");if(!U||await U.getCodec()===null)break e;let z=await U.getDecoderConfig().then(q=>q?.codec??null);h(z!==null),g.push(z)}}g=[...new Set(g)];let S=null,x=null,P=d.attributes.getAsNumber("bandwidth");h(P!==null);let A=d.attributes.getAsNumber("average-bandwidth"),C=d.attributes.get("name");for(let I of g){let R=Qe(I);if(R!==null){if(te.includes(R)){if(S!==null)throw new Error("Unsupported M3U8 file; multiple video codecs found in the CODECS attribute of a variant stream.");S=I;let v=d.attributes.get("video");if(v===null){let E=d.attributes.get("resolution"),D=null,U=null;if(E){let z=E.match(/^(\d+)x(\d+)$/);z&&(D=Number(z[1]),U=Number(z[2]))}p.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:J,lineNumber:d.lineNumber,fullPath:d.fullPath,fullCodecString:S,pairingMask:1n<<BigInt(f),peakBitrate:P,averageBitrate:A,name:C,hasOnlyKeyPackets:d.hasOnlyKeyPackets,info:{type:"video",width:D,height:U}})}else{if(!o.includes(v))throw new Error(`Invalid M3U8 file; variant stream references video group "${v}" which is not defined in any #EXT-X-MEDIA tags.`);for(let E of s){let D=E.attributes.get("group-id"),U=E.attributes.get("type");if(D!==v||U.toLowerCase()!=="video")continue;let z=E.attributes.get("resolution")??d.attributes.get("resolution"),q=null,Te=null;if(z){let we=z.match(/^(\d+)x(\d+)$/);we&&(q=Number(we[1]),Te=Number(we[2]))}p.push({id:-1,demuxer:this,backingTrack:null,default:Is(E.attributes),autoselect:Is(E.attributes)||Jl(E.attributes),languageCode:ed(E.attributes.get("language")),lineNumber:E.lineNumber,fullPath:E.fullPath??d.fullPath,fullCodecString:S,pairingMask:1n<<BigInt(f),peakBitrate:null,averageBitrate:null,name:E.attributes.get("name"),hasOnlyKeyPackets:d.hasOnlyKeyPackets,info:{type:"video",width:q,height:Te}})}}}else if(ae.includes(R)){if(x!==null)throw new Error("Unsupported M3U8 file; multiple audio codecs found in the CODECS attribute of a variant stream.");x=I;let v=d.attributes.get("audio");if(v===null){let E=d.attributes.get("channels"),D=E!==null?Number(E.split("/")[0]):null;p.push({id:-1,demuxer:this,backingTrack:null,default:!0,autoselect:!0,languageCode:J,lineNumber:d.lineNumber,fullPath:d.fullPath,fullCodecString:x,pairingMask:1n<<BigInt(f),peakBitrate:P,averageBitrate:A,name:C,hasOnlyKeyPackets:d.hasOnlyKeyPackets,info:{type:"audio",numberOfChannels:D!==null&&Number.isInteger(D)&&D>0?D:null}})}else{if(!c.includes(v))throw new Error(`Invalid M3U8 file; variant stream references audio group "${v}" which is not defined in any #EXT-X-MEDIA tags.`);for(let E of s){let D=E.attributes.get("group-id"),U=E.attributes.get("type");if(D!==v||U.toLowerCase()!=="audio")continue;let z=E.attributes.get("channels")??d.attributes.get("channels"),q=z!==null?Number(z.split("/")[0]):null;p.push({id:-1,demuxer:this,backingTrack:null,default:Is(E.attributes),autoselect:Is(E.attributes)||Jl(E.attributes),languageCode:ed(E.attributes.get("language")),lineNumber:E.lineNumber,fullPath:E.fullPath??d.fullPath,fullCodecString:x,pairingMask:1n<<BigInt(f),peakBitrate:null,averageBitrate:null,name:E.attributes.get("name"),hasOnlyKeyPackets:d.hasOnlyKeyPackets,info:{type:"audio",numberOfChannels:q!==null&&Number.isInteger(q)&&q>0?q:null}})}}}}}return p})),l=[],m=d=>{let f=l.find(p=>p.fullPath===d.fullPath&&p.info.type===d.info.type);f?(f.pairingMask|=d.pairingMask,f.default||=d.default,f.autoselect||=d.autoselect,f.lineNumber=Math.min(f.lineNumber,d.lineNumber),d.peakBitrate!==null&&(f.peakBitrate=Math.max(f.peakBitrate??-1/0,d.peakBitrate)),d.averageBitrate!==null&&(f.averageBitrate=Math.max(f.averageBitrate??-1/0,d.averageBitrate)),f.languageCode===J&&(f.languageCode=d.languageCode)):(d.id=l.length+1,l.push(d))};for(let d of u)for(let f of d)m(f);l.sort((d,f)=>d.lineNumber-f.lineNumber),this.trackBackings=[];for(let d of l)d.info.type==="video"?this.trackBackings.push(new _s(d)):this.trackBackings.push(new Rs(d));this.internalTracks=l})()}async getTrackBackings(){return await this.readMetadata(),h(this.trackBackings),this.trackBackings}getSegmentedInputForPath(e){let r=this.segmentedInputs.find(a=>a.path===e);if(r)return r;let i=null;return this.internalTracks&&(i=this.internalTracks.filter(s=>s.fullPath===e).map(s=>({id:s.id,type:s.info.type}))),r=new Rn(this,e,i,null),this.segmentedInputs.push(r),r}async getMetadataTags(){return{}}async getMimeType(){return xt}dispose(){if(this.segmentedInputs){for(let e of this.segmentedInputs)e.dispose();this.segmentedInputs.length=0}}},vs=class{constructor(t){this.internalTrack=t;this.hydrationPromise=null}hydrate(){return this.hydrationPromise??=(async()=>{let t=this.internalTrack.demuxer.getSegmentedInputForPath(this.internalTrack.fullPath),e=null,i=(await t.getTrackBackings()).filter(a=>a.getType()===this.getType());if(i.length===1)e=i[0];else if(this instanceof _s){for(let a of i)if(await a.getCodec()===this.getCodec()){e=a;break}}else{h(this instanceof Rs);for(let a of i)if(await a.getCodec()===this.getCodec()){e=a;break}}if(!e)throw new Error("Could not find matching track in underlying media data.");this.internalTrack.backingTrack=e})()}delegate(t){return this.internalTrack.backingTrack?t():this.hydrate().then(t)}getCodec(){throw new Error("Not implemented on base class.")}getDisposition(){return{...Se,default:this.internalTrack.autoselect,primary:this.internalTrack.default}}getId(){return this.internalTrack.id}getPairingMask(){return this.internalTrack.pairingMask}getInternalCodecId(){return null}getLanguageCode(){return this.internalTrack.languageCode}getName(){return this.internalTrack.name}getNumber(){h(this.internalTrack.demuxer.internalTracks);let t=this.internalTrack.info.type,e=0;for(let r of this.internalTrack.demuxer.internalTracks)if(r.info.type===t&&e++,r===this.internalTrack)break;return e}getTimeResolution(){return this.delegate(()=>this.internalTrack.backingTrack.getTimeResolution())}isRelativeToUnixEpoch(){return this.delegate(()=>this.internalTrack.backingTrack.isRelativeToUnixEpoch())}getBitrate(){return this.internalTrack.peakBitrate}getAverageBitrate(){return this.internalTrack.averageBitrate}async getDurationFromMetadata(t){return await this.hydrate(),this.internalTrack.backingTrack.getDurationFromMetadata(t)}async getLiveRefreshInterval(){return await this.hydrate(),this.internalTrack.backingTrack.getLiveRefreshInterval()}getHasOnlyKeyPackets(){return this.internalTrack.hasOnlyKeyPackets||null}async getFirstPacket(t){return await this.hydrate(),this.internalTrack.backingTrack.getFirstPacket(t)}async getPacket(t,e){return await this.hydrate(),this.internalTrack.backingTrack.getPacket(t,e)}async getKeyPacket(t,e){return await this.hydrate(),this.internalTrack.backingTrack.getKeyPacket(t,e)}async getNextPacket(t,e){return await this.hydrate(),this.internalTrack.backingTrack.getNextPacket(t,e)}async getNextKeyPacket(t,e){return await this.hydrate(),this.internalTrack.backingTrack.getNextKeyPacket(t,e)}},_s=class extends vs{constructor(t){super(t)}get backingVideoTrack(){return this.internalTrack.backingTrack}getType(){return"video"}getCodec(){return Qe(this.internalTrack.fullCodecString)}getCodedWidth(){return this.delegate(()=>this.backingVideoTrack.getCodedWidth())}getCodedHeight(){return this.delegate(()=>this.backingVideoTrack.getCodedHeight())}getSquarePixelWidth(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelWidth())}getSquarePixelHeight(){return this.delegate(()=>this.backingVideoTrack.getSquarePixelHeight())}getMetadataDisplayWidth(){return this.backingVideoTrack?null:this.internalTrack.info.width}getMetadataDisplayHeight(){return this.backingVideoTrack?null:this.internalTrack.info.height}getRotation(){return this.delegate(()=>this.backingVideoTrack.getRotation())}async getColorSpace(){return await this.hydrate(),this.backingVideoTrack.getColorSpace()}async canBeTransparent(){return await this.hydrate(),this.backingVideoTrack.canBeTransparent()}getMetadataCodecParameterString(){return this.backingVideoTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingVideoTrack.getDecoderConfig()}},Rs=class extends vs{constructor(t){super(t)}get backingAudioTrack(){return this.internalTrack.backingTrack}getType(){return"audio"}getCodec(){return Qe(this.internalTrack.fullCodecString)}getNumberOfChannels(){return this.internalTrack.info.numberOfChannels!==null?this.internalTrack.info.numberOfChannels:this.delegate(()=>this.backingAudioTrack.getNumberOfChannels())}getSampleRate(){return this.delegate(()=>this.backingAudioTrack.getSampleRate())}getMetadataCodecParameterString(){return this.backingAudioTrack?null:this.internalTrack.fullCodecString}async getDecoderConfig(){return await this.hydrate(),this.backingAudioTrack.getDecoderConfig()}},Is=n=>{let t=n.get("default");if(t===null)return!1;let e=t.toUpperCase();if(e==="YES")return!0;if(e==="NO")return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA DEFAULT attribute must be YES or NO, got "${t}".`)},Jl=n=>{let t=n.get("autoselect");if(t===null)return!1;let e=t.toUpperCase();if(e==="YES")return!0;if(e==="NO")return!1;throw new Error(`Invalid M3U8 file; #EXT-X-MEDIA AUTOSELECT attribute must be YES or NO, got "${t}".`)},ed=n=>{if(n===null)return J;let t=n.split("-")[0];return t||J};var Be=class{constructor(){this._isIsobmff=!1}},Ui=class extends Be{constructor(){super(...arguments);this._isIsobmff=!0}async _getMajorBrand(e){let r=e._reader.requestSlice(0,12);if(r instanceof Promise&&(r=await r),!r)return null;r.skip(4);let i=re(r,4);return i!=="ftyp"&&i!=="styp"?null:re(r,4)}_createDemuxer(e){return new qa(e)}},Fn=class extends Ui{async _canReadInput(t){let e=await this._getMajorBrand(t);if(e!==null)return e!=="qt  ";let r=t._reader.requestSlice(4,4);if(r instanceof Promise&&(r=await r),!r)return!1;let i=re(r,4);return i==="moof"||i==="sidx"}get name(){return"MP4"}get mimeType(){return"video/mp4"}},Mn=class extends Ui{async _canReadInput(t){return await this._getMajorBrand(t)==="qt  "}get name(){return"QuickTime File Format"}get mimeType(){return"video/quicktime"}},zi=class extends Be{async isSupportedEBMLOfDocType(t,e){let r=t._reader.requestSlice(0,mt);if(r instanceof Promise&&(r=await r),!r)return!1;let i=rc(r);if(i===null||i<1||i>8||G(r,i)!==440786851)return!1;let s=ic(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-De;){let u=ft(o);if(!u)break;let{id:l,size:m}=u,d=o.filePos;if(m===void 0)return!1;switch(l){case 17030:if(G(o,m)!==1)return!1;break;case 17143:if(G(o,m)!==1)return!1;break;case 17026:if(gr(o,m)!==e)return!1;break;case 17031:if(G(o,m)>4)return!1;break}o.filePos=d+m}return!0}_canReadInput(t){return this.isSupportedEBMLOfDocType(t,"matroska")}_createDemuxer(t){return new es(t)}get name(){return"Matroska"}get mimeType(){return"video/x-matroska"}},Bn=class extends zi{_canReadInput(t){return this.isSupportedEBMLOfDocType(t,"webm")}get name(){return"WebM"}get mimeType(){return"video/webm"}},On=class extends Be{async _canReadInput(t){let e=0;for(;;){let m=t._reader.requestSlice(e,We);if(m instanceof Promise&&(m=await m),!m)break;let d=pt(m);if(!d)break;e=m.filePos+d.size}let r=await An(t._reader,e,e+4096);if(!r)return!1;let i=r.header,a=lr(i.mpegVersionId,i.channel),s=t._reader.requestSlice(r.startPos+a,4);if(s instanceof Promise&&(s=await s),!s)return!1;let o=F(s);if(o===ur||o===yi)return!0;e=r.startPos+r.header.totalSize;let u=await An(t._reader,e,e+4);if(!u)return!1;let l=u.header;return!(i.channel!==l.channel||i.sampleRate!==l.sampleRate)}_createDemuxer(t){return new rs(t)}get name(){return"MP3"}get mimeType(){return"audio/mpeg"}},Dn=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 cs(t)}get name(){return"WAVE"}get mimeType(){return"audio/wav"}},Vn=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 os(t)}get name(){return"Ogg"}get mimeType(){return"application/ogg"}},Un=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 fs(t)}},zn=class extends Be{async _canReadInput(t){let e=0;for(;;){let s=t._reader.requestSlice(e,We);if(s instanceof Promise&&(s=await s),!s)break;let o=pt(s);if(!o)break;e=s.filePos+o.size}let r=t._reader.requestSliceRange(e,Zt,He);if(r instanceof Promise&&(r=await r),!r)return!1;let i=Ve(r);if(!i||(e+=i.frameLength,r=t._reader.requestSliceRange(e,Zt,He),r instanceof Promise&&(r=await r),!r))return!1;let a=Ve(r);return a?i.objectType===a.objectType&&i.samplingFrequencyIndex===a.samplingFrequencyIndex&&i.channelConfiguration===a.channelConfiguration:!1}_createDemuxer(t){return new us(t)}get name(){return"ADTS"}get mimeType(){return"audio/aac"}},Nn=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 i=B(r,e);return i[0]===71&&i[188]===71||i[0]===71&&i[204]===71?!0:i[4]===71&&i[196]===71}_createDemuxer(t){return new hs(t)}get name(){return"MPEG Transport Stream"}get mimeType(){return"video/MP2T"}},Yr=class extends Be{async _canReadInput(t){let e=t._reader.requestSlice(0,7);if(e instanceof Promise&&(e=await e),!e||!(re(e,7)==="#EXTM3U"))return!1;if(!(t._rootSource instanceof qe))throw new TypeError("HLS inputs require `InputOptions.source` to be a PathedSource or a ref to one.");return t._rootSource._usedForHls=!0,!0}_createDemuxer(t){return new Es(t)}get name(){return"HTTP Live Streaming (HLS)"}get mimeType(){return xt}},Fs=new Fn,Ms=new Mn,Mc=new zi,Bc=new Bn,Bs=new On,Oc=new Dn,Dc=new Vn,Os=new zn,Vc=new Un,Ds=new Nn,Vs=new Yr,td=[Vs,Fs,Ms,Mc,Bc,Oc,Dc,Vc,Bs,Os,Ds],rd=[Vs,Fs,Ms,Bs,Os,Ds],id=(n,t)=>{if(!n||typeof n!="object")throw new TypeError(`${t}, when provided, must be an object.`);if(n.isobmff!==void 0){if(!n.isobmff||typeof n.isobmff!="object")throw new TypeError(`${t}.isobmff, when provided, must be an object.`);if(n.isobmff.resolveKeyId!==void 0&&typeof n.isobmff.resolveKeyId!="function")throw new TypeError(`${t}.isobmff.resolveKeyId, when provided, must be a function.`)}};var Us=new Map,zs=new Map,nf=(n,t)=>{if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.codec!==void 0&&typeof t.codec!="string")throw new TypeError("options.codec, when provided, must be a string.");if(t.codec!==void 0&&Qe(t.codec)!==n)throw new TypeError(`options.codec, when provided, must match the specified codec (${n}).`);if(t.codedWidth!==void 0&&(!Number.isInteger(t.codedWidth)||t.codedWidth<=0))throw new TypeError("options.codedWidth, when provided, must be a positive integer.");if(t.codedHeight!==void 0&&(!Number.isInteger(t.codedHeight)||t.codedHeight<=0))throw new TypeError("options.codedHeight, when provided, must be a positive integer.");if(t.displayAspectWidth!==void 0&&(!Number.isInteger(t.displayAspectWidth)||t.displayAspectWidth<=0))throw new TypeError("options.displayAspectWidth, when provided, must be a positive integer.");if(t.displayAspectHeight!==void 0&&(!Number.isInteger(t.displayAspectHeight)||t.displayAspectHeight<=0))throw new TypeError("options.displayAspectHeight, when provided, must be a positive integer.");if(t.description!==void 0&&!Ot(t.description))throw new TypeError("options.description, when provided, must be a buffer source.");if(t.hardwareAcceleration!==void 0&&!["no-preference","prefer-hardware","prefer-software"].includes(t.hardwareAcceleration))throw new TypeError("options.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(t.optimizeForLatency!==void 0&&typeof t.optimizeForLatency!="boolean")throw new TypeError("options.optimizeForLatency, when provided, must be a boolean.")},af=(n,t)=>{if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.codec!==void 0&&typeof t.codec!="string")throw new TypeError("options.codec, when provided, must be a string.");if(t.codec!==void 0&&Qe(t.codec)!==n)throw new TypeError(`options.codec, when provided, must match the specified codec (${n}).`);if(t.numberOfChannels!==void 0&&(!Number.isInteger(t.numberOfChannels)||t.numberOfChannels<=0))throw new TypeError("options.numberOfChannels, when provided, must be a positive integer.");if(t.sampleRate!==void 0&&(!Number.isInteger(t.sampleRate)||t.sampleRate<=0))throw new TypeError("options.sampleRate, when provided, must be a positive integer.");if(t.description!==void 0&&!Ot(t.description))throw new TypeError("options.description, when provided, must be a buffer source.")},nd=n=>te.includes(n)?Ns(n):ae.includes(n)?Ls(n):!1,Ns=async(n,t={})=>{if(!te.includes(n))return!1;nf(n,t);let e={...t,codedWidth:t.codedWidth??1280,codedHeight:t.codedHeight??720,codec:t.codec??wa(n,1280,720,1e6)};e.description??=Xu(e);let r=JSON.stringify(e),i=Us.get(r);if(i)return i;let a=(async()=>wr.some(o=>o.supports(n,e))?!0:typeof VideoDecoder>"u"?!1:(await VideoDecoder.isConfigSupported(e)).supported===!0)();return Us.set(r,a),a},Ls=async(n,t={})=>{if(!ae.includes(n))return!1;af(n,t);let e={...t,numberOfChannels:t.numberOfChannels??2,sampleRate:t.sampleRate??48e3,codec:t.codec??Aa(n,2,48e3)};if(e.description===void 0){let s=$u(e);if(s===!1)return!1;e.description=s}let r=JSON.stringify(e),i=zs.get(r);if(i)return i;let a=(async()=>Sr.some(o=>o.supports(n,e))||ee.includes(n)?!0:typeof AudioDecoder>"u"?!1:(await AudioDecoder.isConfigSupported(e)).supported===!0)();return zs.set(r,a),a},ad=async()=>{let[n,t]=await Promise.all([Uc(),zc()]);return[...n,...t]},Uc=async(n=te,t)=>{let e=await Promise.all(n.map(r=>Ns(r,t)));return n.filter((r,i)=>e[i])},zc=async(n=ae,t)=>{let e=await Promise.all(n.map(r=>Ls(r,t)));return n.filter((r,i)=>e[i])};fi();var sd=-1/0,od=-1/0,qn=null;typeof FinalizationRegistry<"u"&&(qn=new FinalizationRegistry(n=>{let t=performance.now();n.type==="video"?(t-sd>=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."),sd=t),typeof VideoFrame<"u"&&n.data instanceof VideoFrame&&n.data.close()):(t-od>=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."),od=t),typeof AudioData<"u"&&n.data instanceof AudioData&&n.data.close())}));var ht=class{constructor(){this._referenceCount=0;this._lastAllocationBuffer=null}},Gn=["I420","I420P10","I420P12","I420A","I420AP10","I420AP12","I422","I422P10","I422P12","I422A","I422AP10","I422AP12","I444","I444P10","I444P12","I444A","I444AP10","I444AP12","NV12","RGBA","RGBX","BGRA","BGRX"],sf=new Set(Gn),ke=class n{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||!sf.has(e.format))throw new TypeError("init.format must be one of: "+Gn.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.");if(e.layout!==void 0){if(!Array.isArray(e.layout))throw new TypeError("init.layout, when provided, must be an array.");for(let i of e.layout){if(!i||typeof i!="object"||Array.isArray(i))throw new TypeError("Each entry in init.layout must be an object.");if(!Number.isInteger(i.offset)||i.offset<0)throw new TypeError("plane.offset must be a non-negative integer.");if(!Number.isInteger(i.stride)||i.stride<0)throw new TypeError("plane.stride must be a non-negative integer.")}}if(e.visibleRect!==void 0&&Ko(e.visibleRect,"init.visibleRect"),e.displayWidth!==void 0&&(!Number.isInteger(e.displayWidth)||e.displayWidth<=0))throw new TypeError("init.displayWidth, when provided, must be a positive integer.");if(e.displayHeight!==void 0&&(!Number.isInteger(e.displayHeight)||e.displayHeight<=0))throw new TypeError("init.displayHeight, when provided, must be a positive integer.");if(e.displayWidth!==void 0!=(e.displayHeight!==void 0))throw new TypeError("init.displayWidth and init.displayHeight must be either both provided or both omitted.");this._data=j(t).slice(),this._layout=e.layout??cf(e.format,e.codedWidth,e.codedHeight),this.format=e.format,this.rotation=e.rotation??0,this.timestamp=e.timestamp,this.duration=e.duration??0;let r=e.colorSpace??null;r===null&&(this.format==="RGBA"||this.format==="RGBX"||this.format==="BGRA"||this.format==="BGRX"?r={primaries:"bt709",transfer:"iec61966-2-1",matrix:"rgb",fullRange:!0}:r={primaries:"bt709",transfer:"bt709",matrix:"bt709",fullRange:!1}),this.colorSpace=new Jr(r),this.visibleRect={left:e.visibleRect?.left??0,top:e.visibleRect?.top??0,width:e.visibleRect?.width??e.codedWidth,height:e.visibleRect?.height??e.codedHeight},e.displayWidth!==void 0?(this.squarePixelWidth=this.rotation%180===0?e.displayWidth:e.displayHeight,this.squarePixelHeight=this.rotation%180===0?e.displayHeight:e.displayWidth):(this.squarePixelWidth=this.visibleRect.width,this.squarePixelHeight=this.visibleRect.height)}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.");e?.visibleRect!==void 0&&Ko(e.visibleRect,"init.visibleRect"),this._data=t,this._layout=null,this.format=t.format,this.visibleRect={left:t.visibleRect?.x??0,top:t.visibleRect?.y??0,width:t.visibleRect?.width??t.codedWidth,height:t.visibleRect?.height??t.codedHeight},this.rotation=e?.rotation??0,this.squarePixelWidth=t.displayWidth,this.squarePixelHeight=t.displayHeight,this.timestamp=e?.timestamp??t.timestamp/1e6,this.duration=e?.duration??(t.duration??0)/1e6,this.colorSpace=new Jr(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 n(new VideoFrame(t,{timestamp:Math.trunc(e.timestamp*wt),duration:Math.trunc((e.duration??0)*wt)||void 0}),e);let r=0,i=0;if("naturalWidth"in t?(r=t.naturalWidth,i=t.naturalHeight):"videoWidth"in t?(r=t.videoWidth,i=t.videoHeight):"width"in t&&(r=Number(t.width),i=Number(t.height)),!r||!i)throw new TypeError("Could not determine dimensions.");let a=new OffscreenCanvas(r,i),s=a.getContext("2d",{alpha:Nr(),willReadFrequently:!0});h(s),s.drawImage(t,0,0),this._data=a,this._layout=null,this.format="RGBX",this.visibleRect={left:0,top:0,width:r,height:i},this.squarePixelWidth=r,this.squarePixelHeight=i,this.rotation=e.rotation??0,this.timestamp=e.timestamp,this.duration=e.duration??0,this.colorSpace=new Jr({matrix:"rgb",primaries:"bt709",transfer:"iec61966-2-1",fullRange:!0})}else if(t instanceof ht){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(this._data=t,t._referenceCount++,this.format=t.getFormat(),this.format!==null&&!Gn.includes(this.format))throw new TypeError("getFormat() must return a VideoSamplePixelFormat or null.");if(this.visibleRect={left:0,top:0,width:t.getCodedWidth(),height:t.getCodedHeight()},!Number.isInteger(this.visibleRect.width)||this.visibleRect.width<=0)throw new TypeError("getCodedWidth() must return a positive integer.");if(!Number.isInteger(this.visibleRect.height)||this.visibleRect.height<=0)throw new TypeError("getCodedHeight() must return a positive integer.");if(this.squarePixelWidth=t.getSquarePixelWidth(),!Number.isInteger(this.squarePixelWidth)||this.squarePixelWidth<=0)throw new TypeError("getSquarePixelWidth() must return a positive integer.");if(this.squarePixelHeight=t.getSquarePixelHeight(),!Number.isInteger(this.squarePixelHeight)||this.squarePixelHeight<=0)throw new TypeError("getSquarePixelHeight() must return a positive integer.");this.rotation=e.rotation??0,this.timestamp=e.timestamp,this.duration=e.duration??0,this.colorSpace=t.getColorSpace()}else throw new TypeError("Invalid data type: Must be a BufferSource, CanvasImageSource, or VideoSampleResource.");this.pixelAspectRatio=zt({num:this.squarePixelWidth*this.codedHeight,den:this.squarePixelHeight*this.codedWidth}),qn?.register(this,{type:"video",data:this._data},this)}get codedWidth(){return this.visibleRect.width}get codedHeight(){return this.visibleRect.height}get displayWidth(){return this.rotation%180===0?this.squarePixelWidth:this.squarePixelHeight}get displayHeight(){return this.rotation%180===0?this.squarePixelHeight:this.squarePixelWidth}get microsecondTimestamp(){return Math.trunc(wt*this.timestamp)}get microsecondDuration(){return Math.trunc(wt*this.duration)}get hasAlpha(){return this.format&&this.format.includes("A")}clone(){if(this._closed)throw new Error("VideoSample is closed.");return h(this._data!==null),this._data instanceof ht?new n(this._data,{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation}):Wn(this._data)?new n(this._data.clone(),{timestamp:this.timestamp,duration:this.duration,rotation:this.rotation}):this._data instanceof Uint8Array?(h(this._layout),new n(this._data,{format:this.format,layout:this._layout,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight})):new n(this._data,{format:this.format,codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.timestamp,duration:this.duration,colorSpace:this.colorSpace,rotation:this.rotation,visibleRect:this.visibleRect,displayWidth:this.displayWidth,displayHeight:this.displayHeight})}close(){this._closed||(qn?.unregister(this),this._data instanceof ht?(this._data._referenceCount--,this._data._referenceCount===0&&this._data.close()):Wn(this._data)?this._data.close():this._data=null,this._closed=!0)}allocationSize(t={}){if(ud(t),this._closed)throw new Error("VideoSample is closed.");if((t.format??this.format)==null)throw new Error("Cannot get allocation size when format is null.");return Wn(this._data)?this._data.allocationSize(t):ld(this,t).allocationSize}async copyTo(t,e={}){if(!Ot(t))throw new TypeError("destination must be an ArrayBuffer or an ArrayBuffer view.");if(ud(e),this._closed)throw new Error("VideoSample is closed.");if((e.format??this.format)==null)throw new Error("Cannot copy video sample data when format is null.");if(h(this._data!==null),Wn(this._data))return this._data.copyTo(t,e);if(e.format&&!["RGBA","RGBX","BGRA","BGRX"].includes(this.format)&&["RGBA","RGBX","BGRA","BGRX"].includes(e.format))if(this._data instanceof ht){var u=[];try{let f=tn(u,await this._data.toRgbSample({timestamp:this.timestamp,duration:this.duration,rotation:this.rotation},e.colorSpace??"srgb"));if(!(f instanceof n))throw new TypeError("toRgbSample() must return a VideoSample.");if(!["RGBA","RGBX","BGRA","BGRX"].includes(f.format))throw new Error(`Sample returned by toRgbSample was expected to have an RGB format, got '${f.format}' instead.`);return await f.copyTo(t,e)}catch(l){var m=l,d=!0}finally{rn(u,m,d)}}else{if(typeof VideoFrame>"u")throw new Error("For this sample, converting from a non-RGB to an RGB format requires VideoFrame to be defined.");let f=this.toVideoFrame(),p=await f.copyTo(t,e);return f.close(),p}let r=ld(this,e);h(this.format);let i=j(t);if(i.byteLength<r.allocationSize)throw new TypeError(`Destination buffer too small. Required: ${r.allocationSize}, Available: ${i.byteLength}`);let a=Hs(this.format),s;if(this._data instanceof ht){let f=this._data.getDataPlanes();if(f instanceof Promise&&(f=await f),!Array.isArray(f)||f.some(p=>!(p.data instanceof Uint8Array)||!Number.isInteger(p.stride)||p.stride<0))throw new TypeError('getDataPlanes() must return an array of objects with a Uint8Array "data" property and a non-negative integer "stride" property.');s=f}else if(this._data instanceof Uint8Array)h(this._layout),h(this._layout.length===a.length),s=this._layout.map((f,p)=>{let b=Math.ceil(this.codedHeight/a[p].heightDivisor);return{data:this._data.subarray(f.offset,f.offset+f.stride*b),stride:f.stride}});else{let p=this._data.getContext("2d");h(p);let b=p.getImageData(0,0,this.codedWidth,this.codedHeight);s=[{data:j(b.data),stride:4*this.codedWidth}]}let o=[],c=a.length;for(let f=0;f<c;f++){let p=r.computedLayouts[f],b=s[f].stride,g=s[f].data,y=p.sourceTop*b;y+=p.sourceLeftBytes;let k=p.destinationOffset,w=p.sourceWidthBytes,T={offset:k,stride:p.destinationStride};for(let S=0;S<p.sourceHeight;S++){if(y+w>g.byteLength)throw new Error("Source buffer OOB read.");if(k+w>i.byteLength)throw new Error("Destination buffer OOB write.");let x=g.subarray(y,y+w);i.set(x,k),y+=b,k+=p.destinationStride}o.push(T)}if(e.format!==void 0){let f=this.format.startsWith("RGB")!==e.format.startsWith("RGB"),p=this.format.includes("X")&&e.format.includes("A");if(f||p)for(let b=0;b<r.allocationSize;b+=4){if(f){let g=i[b],y=i[b+2];i[b]=y,i[b+2]=g}p&&(i[b+3]=255)}}return o}toVideoFrame(){if(this._closed)throw new Error("VideoSample is closed.");if(h(this._data!==null),this._data instanceof ht){if(this.format===null)throw new Error("Cannot convert a VideoSampleResource-backed VideoSample to VideoFrame if format is null.");let t=this._data.getDataPlanes();if(t instanceof Promise)throw new Error("Cannot convert a VideoSampleResource-backed VideoSample to VideoFrame if getDataPlanes() returns a promise.");let e=t.reduce((s,o)=>s+o.data.byteLength,0),r=new Uint8Array(e),i=0,a=[];for(let s of t)r.set(s.data,i),a.push(i),i+=s.data.byteLength;return new VideoFrame(r,{format:this.format,layout:t.map((s,o)=>({offset:a[o],stride:s.stride})),codedWidth:this.codedWidth,codedHeight:this.codedHeight,timestamp:this.microsecondTimestamp,duration:this.microsecondDuration,colorSpace:this.colorSpace,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight})}else return Wn(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,displayWidth:this.squarePixelWidth,displayHeight:this.squarePixelHeight}):new VideoFrame(this._data,{timestamp:this.microsecondTimestamp,duration:this.microsecondDuration||void 0})}draw(t,e,r,i,a,s,o,c,u){let l=0,m=0,d=this.displayWidth,f=this.displayHeight,p=0,b=0,g=this.displayWidth,y=this.displayHeight;if(s!==void 0?(l=e,m=r,d=i,f=a,p=s,b=o,c!==void 0?(g=c,y=u):(g=d,y=f)):(p=e,b=r,i!==void 0&&(g=i,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(l))throw new TypeError("sx must be a number.");if(!Number.isFinite(m))throw new TypeError("sy must be a number.");if(!Number.isFinite(d)||d<0)throw new TypeError("sWidth must be a non-negative number.");if(!Number.isFinite(f)||f<0)throw new TypeError("sHeight must be a non-negative number.");if(!Number.isFinite(p))throw new TypeError("dx must be a number.");if(!Number.isFinite(b))throw new TypeError("dy must be a number.");if(!Number.isFinite(g)||g<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:l,sy:m,sWidth:d,sHeight:f}=this._rotateSourceRegion(l,m,d,f,this.rotation));let k=this.toCanvasImageSource();t.save();let w=p+g/2,T=b+y/2;t.translate(w,T),t.rotate(this.rotation*Math.PI/180);let S=this.rotation%180===0?1:g/y;t.scale(1/S,S),t.drawImage(k,l,m,d,f,-g/2,-y/2,g,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&&Ar(e.crop,"options.");let r=t.canvas.width,i=t.canvas.height,a=e.rotation??this.rotation,[s,o]=a%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],c=e.crop;c&&(c=Li(c,s,o));let u,l,m,d,{sx:f,sy:p,sWidth:b,sHeight:g}=this._rotateSourceRegion(e.crop?.left??0,e.crop?.top??0,e.crop?.width??s,e.crop?.height??o,a);if(e.fit==="fill")u=0,l=0,m=r,d=i;else{let[k,w]=e.crop?[e.crop.width,e.crop.height]:[s,o],T=e.fit==="contain"?Math.min(r/k,i/w):Math.max(r/k,i/w);m=k*T,d=w*T,u=(r-m)/2,l=(i-d)/2}t.save();let y=a%180===0?1:m/d;t.translate(r/2,i/2),t.rotate(a*Math.PI/180),t.scale(1/y,y),t.translate(-r/2,-i/2),t.drawImage(this.toCanvasImageSource(),f,p,b,g,u,l,m,d),t.restore()}_rotateSourceRegion(t,e,r,i,a){return a===90?[t,e,r,i]=[e,this.squarePixelHeight-t-r,i,r]:a===180?[t,e]=[this.squarePixelWidth-t-r,this.squarePixelHeight-e-i]:a===270&&([t,e,r,i]=[this.squarePixelWidth-e-i,t,i,r]),{sx:t,sy:e,sWidth:r,sHeight:i}}toCanvasImageSource(){if(this._closed)throw new Error("VideoSample is closed.");if(h(this._data!==null),this._data instanceof ht||this._data instanceof Uint8Array){let t=this.toVideoFrame();return queueMicrotask(()=>t.close()),t}else return this._data}async transform(t){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.width!==void 0&&(!Number.isInteger(t.width)||t.width<=0))throw new TypeError("options.width, when provided, must be a positive integer.");if(t.height!==void 0&&(!Number.isInteger(t.height)||t.height<=0))throw new TypeError("options.height, when provided, must be a positive integer.");if(t.roundDimensionsTo!==void 0&&(!Number.isInteger(t.roundDimensionsTo)||t.roundDimensionsTo<=0))throw new TypeError("options.roundDimensionsTo, when provided, must be a positive integer.");if(t.fit!==void 0&&!["fill","contain","cover"].includes(t.fit))throw new TypeError('options.fit, when provided, must be one of "fill", "contain", or "cover".');if(t.width!==void 0&&t.height!==void 0&&t.fit===void 0)throw new TypeError("When both options.width and options.height are provided, options.fit must also be provided.");if(t.rotate!==void 0&&![0,90,180,270].includes(t.rotate))throw new TypeError("options.rotate, when provided, must be 0, 90, 180 or 270.");if(t.crop!==void 0&&Ar(t.crop,"options."),t.alpha!==void 0&&!["keep","discard"].includes(t.alpha))throw new TypeError("options.alpha, when provided, must be 'keep' or 'discard'.");let e=Ze(this.rotation+(t.rotate??0)),[r,i]=e%180===0?[this.squarePixelWidth,this.squarePixelHeight]:[this.squarePixelHeight,this.squarePixelWidth],a=t.crop;a&&(a=Li(a,r,i));let s=a?a.width:r,o=a?a.height:i,c=s/o,u,l;t.width!==void 0&&t.height===void 0?(u=t.width,l=u/c):t.width===void 0&&t.height!==void 0?(l=t.height,u=l*c):t.width!==void 0&&t.height!==void 0?(u=t.width,l=t.height):(u=s,l=o),u=sn(u,t.roundDimensionsTo??1),l=sn(l,t.roundDimensionsTo??1);let m={width:u,height:l,fit:t.fit??"fill",rotation:e,crop:a??{left:0,top:0,width:r,height:i},alpha:t.alpha??"keep"};for(let b of Nc){let g=b(this,m);if(g instanceof Promise&&(g=await g),g!==null)return g}let d=null,f=!1;for(let b of Ln)if(b.canvas.width===m.width&&b.canvas.height===m.height){d=b.canvas,b.age=cd++;break}if(d===null){if(typeof OffscreenCanvas<"u")d=new OffscreenCanvas(m.width,m.height);else{if(typeof window>"u"||typeof document>"u")throw new Error("Cannot transform VideoSamples in this environment. Either run in an environment with OffscreenCanvas or HTMLCanvasElement, or supply a custom VideoSample transformer using registerVideoSampleTransformer().");d=document.createElement("canvas"),d.width=m.width,d.height=m.height}f=!0,Ln.length>=of&&Ln.splice(pi(Ln,b=>b.age),1),Ln.push({canvas:d,age:cd++})}let p=d.getContext("2d",{alpha:!0});return h(p),m.alpha==="discard"?(p.fillStyle="black",p.fillRect(0,0,m.width,m.height)):f||p.clearRect(0,0,m.width,m.height),this.drawWithFit(p,{fit:m.fit,rotation:m.rotation,crop:m.crop}),new n(d,{timestamp:this.timestamp,duration:this.duration,rotation:0})}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()}},Nc=[],dd=n=>{Nc.includes(n)||Nc.push(n)},of=3,Ln=[],cd=0,Jr=class{constructor(t){if(t!==void 0){if(!t||typeof t!="object")throw new TypeError("init.colorSpace, when provided, must be an object.");let e=Object.keys(et);if(t.primaries!=null&&!e.includes(t.primaries))throw new TypeError(`init.colorSpace.primaries, when provided, must be one of ${e.join(", ")}.`);let r=Object.keys(tt);if(t.transfer!=null&&!r.includes(t.transfer))throw new TypeError(`init.colorSpace.transfer, when provided, must be one of ${r.join(", ")}.`);let i=Object.keys(rt);if(t.matrix!=null&&!i.includes(t.matrix))throw new TypeError(`init.colorSpace.matrix, when provided, must be one of ${i.join(", ")}.`);if(t.fullRange!=null&&typeof t.fullRange!="boolean")throw new TypeError("init.colorSpace.fullRange, when provided, must be a boolean.")}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}}},Wn=n=>typeof VideoFrame<"u"&&n instanceof VideoFrame,Li=(n,t,e)=>{let r=Math.min(n.left,t),i=Math.min(n.top,e),a=Math.min(n.width,t-r),s=Math.min(n.height,e-i);return h(a>=0),h(s>=0),{left:r,top:i,width:a,height:s}},Ar=(n,t)=>{if(!n||typeof n!="object")throw new TypeError(t+"crop, when provided, must be an object.");if(!Number.isInteger(n.left)||n.left<0)throw new TypeError(t+"crop.left must be a non-negative integer.");if(!Number.isInteger(n.top)||n.top<0)throw new TypeError(t+"crop.top must be a non-negative integer.");if(!Number.isInteger(n.width)||n.width<0)throw new TypeError(t+"crop.width must be a non-negative integer.");if(!Number.isInteger(n.height)||n.height<0)throw new TypeError(t+"crop.height must be a non-negative integer.")},ud=n=>{if(!n||typeof n!="object")throw new TypeError("options must be an object.");if(n.colorSpace!==void 0&&!["display-p3","srgb"].includes(n.colorSpace))throw new TypeError("options.colorSpace, when provided, must be 'display-p3' or 'srgb'.");if(n.format!==void 0&&typeof n.format!="string")throw new TypeError("options.format, when provided, must be a string.");if(n.layout!==void 0){if(!Array.isArray(n.layout))throw new TypeError("options.layout, when provided, must be an array.");for(let t of n.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(n.rect!==void 0){if(!n.rect||typeof n.rect!="object")throw new TypeError("options.rect, when provided, must be an object.");if(n.rect.x!==void 0&&(!Number.isInteger(n.rect.x)||n.rect.x<0))throw new TypeError("options.rect.x, when provided, must be a non-negative integer.");if(n.rect.y!==void 0&&(!Number.isInteger(n.rect.y)||n.rect.y<0))throw new TypeError("options.rect.y, when provided, must be a non-negative integer.");if(n.rect.width!==void 0&&(!Number.isInteger(n.rect.width)||n.rect.width<0))throw new TypeError("options.rect.width, when provided, must be a non-negative integer.");if(n.rect.height!==void 0&&(!Number.isInteger(n.rect.height)||n.rect.height<0))throw new TypeError("options.rect.height, when provided, must be a non-negative integer.")}},cf=(n,t,e)=>{let r=Hs(n),i=[],a=0;for(let s of r){let o=Math.ceil(t/s.widthDivisor),c=Math.ceil(e/s.heightDivisor),u=o*s.sampleBytes,l=u*c;i.push({offset:a,stride:u}),a+=l}return i},Hs=n=>{let t=(e,r,i,a,s)=>{let o=[{sampleBytes:e,widthDivisor:1,heightDivisor:1},{sampleBytes:r,widthDivisor:i,heightDivisor:a},{sampleBytes:r,widthDivisor:i,heightDivisor:a}];return s&&o.push({sampleBytes:e,widthDivisor:1,heightDivisor:1}),o};switch(n){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:ne(n),h(!1)}},ld=(n,t)=>{let e={left:0,top:0,width:n.codedWidth,height:n.codedHeight},r=t.rect,i=uf(e,r,n.codedWidth,n.codedHeight,n.format),a=t.layout,s;if(!t.format||t.format===n.format)s=n.format;else if(["RGBA","RGBX","BGRA","BGRX"].includes(t.format))s=t.format;else throw new Error("NotSupportedError: Invalid destination format.");return df(i,s,a)},uf=(n,t,e,r,i)=>{let a={...n};if(t!==void 0){if(t.width===0||t.height===0)throw new TypeError("visibleRect dimensions cannot be zero.");if((t.x||0)+(t.width||0)>e)throw new TypeError("visibleRect exceeds codedWidth.");if((t.y||0)+(t.height||0)>r)throw new TypeError("visibleRect exceeds codedHeight.");a.x=t.x||0,a.y=t.y||0,a.width=t.width||0,a.height=t.height||0}if(!lf(i,a))throw new TypeError("visibleRect alignment is invalid for the format.");return a},lf=(n,t)=>{if(n===null)return!0;let e=Hs(n);for(let r=0;r<e.length;r++){let i=e[r],a=i.widthDivisor,s=i.heightDivisor;if((t.x||0)%a!==0||(t.y||0)%s!==0)return!1}return!0},df=(n,t,e)=>{let r=Hs(t),i=r.length;if(e!==void 0&&e.length!==i)throw new TypeError(`Layout must have ${i} planes.`);let a=0,s=[],o=[];for(let c=0;c<i;c++){let u=r[c],l=u.sampleBytes,m=u.widthDivisor,d=u.heightDivisor,f={destinationOffset:0,destinationStride:0,sourceTop:0,sourceHeight:0,sourceLeftBytes:0,sourceWidthBytes:0};if(f.sourceTop=Math.ceil(Math.trunc(n.y||0)/d),f.sourceHeight=Math.ceil(Math.trunc(n.height||0)/d),f.sourceLeftBytes=Math.floor(Math.trunc(n.x||0)/m)*l,f.sourceWidthBytes=Math.floor(Math.trunc(n.width||0)/m)*l,e!==void 0){let g=e[c];if(g.stride<f.sourceWidthBytes)throw new TypeError(`Stride for plane ${c} is too small.`);f.destinationOffset=g.offset,f.destinationStride=g.stride}else f.destinationOffset=a,f.destinationStride=f.sourceWidthBytes;let b=f.destinationStride*f.sourceHeight+f.destinationOffset;if(b>4294967295)throw new TypeError("Allocation size exceeds limit.");o.push(b),a=Math.max(a,b);for(let g=0;g<c;g++){let y=s[g];if(!(o[c]<=y.destinationOffset||o[g]<=f.destinationOffset))throw new TypeError("Planes overlap.")}s.push(f)}return{allocationSize:a,computedLayouts:s}},Ws=new Set(["f32","f32-planar","s16","s16-planar","s32","s32-planar","u8","u8-planar"]),er=class{constructor(){this._referenceCount=0}},be=class n{constructor(t){this._closed=!1;if(Hn(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 instanceof er){if(this._data=t,t._referenceCount++,this.format=t.getFormat(),!Ws.has(this.format))throw new TypeError("getFormat() must return an AudioSampleFormat.");if(this.sampleRate=t.getSampleRate(),!Number.isInteger(this.sampleRate)||this.sampleRate<=0)throw new TypeError("getSampleRate() must return a positive integer.");if(this.numberOfFrames=t.getNumberOfFrames(),!Number.isInteger(this.numberOfFrames)||this.numberOfFrames<0)throw new TypeError("getNumberOfFrames() must return a non-negative integer.");if(this.numberOfChannels=t.getNumberOfChannels(),!Number.isInteger(this.numberOfChannels)||this.numberOfChannels<=0)throw new TypeError("getNumberOfChannels() must return a positive integer.");if(this.timestamp=t.getTimestamp(),!Number.isFinite(this.timestamp))throw new TypeError("getTimestamp() must return a finite number.");this.duration=this.numberOfFrames/this.sampleRate}else{if(!t||typeof t!="object")throw new TypeError("Invalid AudioDataInit: must be an object.");if(!Ws.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/(Zr(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 i=this.numberOfFrames*this.numberOfChannels*Zr(this.format);if(r.byteLength<i)throw new TypeError("Invalid AudioDataInit: insufficient data size.");this._data=r}qn?.register(this,{type:"audio",data:this._data},this)}get microsecondTimestamp(){return Math.trunc(wt*this.timestamp)}get microsecondDuration(){return Math.trunc(wt*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&&!Ws.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 i=t.frameCount!==void 0?t.frameCount:this.numberOfFrames-r;if(i>this.numberOfFrames-r)throw new RangeError("frameCount out of range");let a=Zr(e),s=Ni(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?i:i*this.numberOfChannels)*a}copyTo(t,e){if(!Ot(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&&!Ws.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{format:r,frameCount:i,frameOffset:a}=e,{planeIndex:s}=e,o=this.format,c=r??this.format;if(!c)throw new Error("Destination format not determined");let u=this.numberOfFrames,l=this.numberOfChannels,m=a??0;if(m>=u)throw new RangeError("frameOffset out of range");let d=i!==void 0?i:u-m;if(d>u-m)throw new RangeError("frameCount out of range");let f=Zr(c),p=Ni(c);if(p&&s>=l)throw new RangeError("planeIndex out of range");if(!p&&s!==0)throw new RangeError("planeIndex out of range");let g=(p?d:d*l)*f;if(t.byteLength<g)throw new RangeError("Destination buffer is too small");let y=V(t),k=fd(c);if(Hn(this._data))sr()&&l>2&&c!==o?mf(this._data,y,o,c,l,s,m,d):this._data.copyTo(t,{planeIndex:s,frameOffset:m,frameCount:d,format:c});else{let w=md(o),T=Zr(o),S=Ni(o),x;if(this._data instanceof er){let A=C=>{let I=this._data.getDataPlane(C);if(!(I instanceof Uint8Array))throw new TypeError("getDataPlane() must return a Uint8Array.");let R=u*T*(S?1:l);if(I.byteLength!==R)throw new TypeError(`Data plane ${C} has invalid size. Expected exactly ${R} bytes, got ${I.byteLength} bytes.`);return I};if(S)if(p)x=A(s),s=0;else{x=new Uint8Array(u*T*l);for(let C=0;C<l;C++){let I=A(C);x.set(I,C*u*T)}}else x=A(0)}else x=this._data;let P=V(x);for(let A=0;A<d;A++)if(p){let C=A*f,I;S?I=(s*u+(A+m))*T:I=((A+m)*l+s)*T;let R=w(P,I);k(y,C,R)}else for(let C=0;C<l;C++){let R=(A*l+C)*f,v;S?v=(C*u+(A+m))*T:v=((A+m)*l+C)*T;let E=w(P,v);k(y,R,E)}}}clone(){if(this._closed)throw new Error("AudioSample is closed.");if(this._data instanceof er){let t=new n(this._data);return t.setTimestamp(this.timestamp),t}else if(Hn(this._data)){let t=new n(this._data.clone());return t.setTimestamp(this.timestamp),t}else return new n({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.timestamp,data:this._data})}close(){this._closed||(qn?.unregister(this),this._data instanceof er?(this._data._referenceCount--,this._data._referenceCount===0&&this._data.close()):Hn(this._data)?this._data.close():this._data=new Uint8Array(0),this._closed=!0)}toAudioData(){if(this._closed)throw new Error("AudioSample is closed.");return this._data instanceof er?this._createAudioDataFromData():Hn(this._data)?this._data.timestamp===this.microsecondTimestamp?this._data.clone():this._createAudioDataFromData():new AudioData({format:this.format,sampleRate:this.sampleRate,numberOfFrames:this.numberOfFrames,numberOfChannels:this.numberOfChannels,timestamp:this.microsecondTimestamp,data:this._data.buffer instanceof ArrayBuffer?this._data.buffer:this._data.slice()})}_createAudioDataFromData(){if(Ni(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})}}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,i=t.numberOfChannels,a=t.sampleRate,s=t.length,o=Math.floor(r/i),c=0,u=s;for(;u>0;){let l=Math.min(o,u),m=new Float32Array(i*l);for(let d=0;d<i;d++)t.copyFromChannel(m.subarray(d*l,(d+1)*l),d,c);yield new n({format:"f32-planar",sampleRate:a,numberOfFrames:l,numberOfChannels:i,timestamp:e+c/a,data:m}),c+=l,u-=l}}static fromAudioBuffer(t,e){if(!(t instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=48e3*5,i=t.numberOfChannels,a=t.sampleRate,s=t.length,o=Math.floor(r/i),c=0,u=s,l=[];for(;u>0;){let m=Math.min(o,u),d=new Float32Array(i*m);for(let p=0;p<i;p++)t.copyFromChannel(d.subarray(p*m,(p+1)*m),p,c);let f=new n({format:"f32-planar",sampleRate:a,numberOfFrames:m,numberOfChannels:i,timestamp:e+c/a,data:d});l.push(f),c+=m,u-=m}return l}},Zr=n=>{switch(n){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")}},Ni=n=>{switch(n){case"u8-planar":case"s16-planar":case"s32-planar":case"f32-planar":return!0;default:return!1}},md=n=>{switch(n){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)}},fd=n=>{switch(n){case"u8":case"u8-planar":return(t,e,r)=>t.setUint8(e,ue((r+1)*127.5,0,255));case"s16":case"s16-planar":return(t,e,r)=>t.setInt16(e,ue(Math.round(r*32767),-32768,32767),!0);case"s32":case"s32-planar":return(t,e,r)=>t.setInt32(e,ue(Math.round(r*2147483647),-2147483648,2147483647),!0);case"f32":case"f32-planar":return(t,e,r)=>t.setFloat32(e,r,!0)}},Hn=n=>typeof AudioData<"u"&&n instanceof AudioData,qs=n=>{switch(n){case"u8-planar":return"u8";case"s16-planar":return"s16";case"s32-planar":return"s32";case"f32-planar":return"f32";default:return n}},mf=(n,t,e,r,i,a,s,o)=>{let c=md(e),u=fd(r),l=Zr(e),m=Zr(r),d=Ni(e);if(Ni(r))if(d){let p=new ArrayBuffer(o*l),b=V(p);n.copyTo(p,{planeIndex:a,frameOffset:s,frameCount:o,format:e});for(let g=0;g<o;g++){let y=g*l,k=g*m,w=c(b,y);u(t,k,w)}}else{let p=new ArrayBuffer(o*i*l),b=V(p);n.copyTo(p,{planeIndex:0,frameOffset:s,frameCount:o,format:e});for(let g=0;g<o;g++){let y=(g*i+a)*l,k=g*m,w=c(b,y);u(t,k,w)}}else if(d){let p=o*l,b=new ArrayBuffer(p),g=V(b);for(let y=0;y<i;y++){n.copyTo(b,{planeIndex:y,frameOffset:s,frameCount:o,format:e});for(let k=0;k<o;k++){let w=k*l,T=(k*i+y)*m,S=c(g,w);u(t,T,S)}}}else{let p=new ArrayBuffer(o*i*l),b=V(p);n.copyTo(p,{planeIndex:0,frameOffset:s,frameCount:o,format:e});for(let g=0;g<o;g++)for(let y=0;y<i;y++){let k=g*i+y,w=k*l,T=k*m,S=c(b,w);u(t,T,S)}}},Gs=(n,t)=>{let e=n.allocationSize({format:t,planeIndex:0}),r=new ArrayBuffer(e);return n.copyTo(r,{format:t,planeIndex:0}),new be({data:r,format:t,numberOfChannels:n.numberOfChannels,sampleRate:n.sampleRate,timestamp:n.timestamp,duration:n.duration})};var Ks=new Map,Qs=new Map,js=n=>{if(!n||typeof n!="object")throw new TypeError("Encoding config must be an object.");if(!te.includes(n.codec))throw new TypeError(`Invalid video codec '${n.codec}'. Must be one of: ${te.join(", ")}.`);if(!(n.bitrate instanceof xe)&&(!Number.isInteger(n.bitrate)||n.bitrate<=0))throw new TypeError("config.bitrate must be a positive integer or a quality.");if(n.keyFrameInterval!==void 0&&(!Number.isFinite(n.keyFrameInterval)||n.keyFrameInterval<0))throw new TypeError("config.keyFrameInterval, when provided, must be a non-negative number.");if(n.sizeChangeBehavior!==void 0&&!["deny","passThrough","fill","contain","cover"].includes(n.sizeChangeBehavior))throw new TypeError("config.sizeChangeBehavior, when provided, must be 'deny', 'passThrough', 'fill', 'contain' or 'cover'.");if(n.transform!==void 0){if(typeof n.transform!="object"||!n.transform)throw new TypeError("config.transform, when provided, must be an object.");if(n.transform.width!==void 0&&(!Number.isInteger(n.transform.width)||n.transform.width<=0))throw new TypeError("config.transform.width, when provided, must be a positive integer.");if(n.transform.height!==void 0&&(!Number.isInteger(n.transform.height)||n.transform.height<=0))throw new TypeError("config.transform.height, when provided, must be a positive integer.");if(n.transform.fit!==void 0&&!["fill","contain","cover"].includes(n.transform.fit))throw new TypeError('config.transform.fit, when provided, must be one of "fill", "contain", or "cover".');if(n.transform.width!==void 0&&n.transform.height!==void 0&&n.transform.fit===void 0&&!["fill","contain","cover"].includes(n.sizeChangeBehavior))throw new TypeError("When both config.transform.width and config.transform.height are provided, config.transform.fit must also be provided.");if(n.transform.fit!==void 0&&["fill","contain","cover"].includes(n.sizeChangeBehavior)&&n.transform.fit!==n.sizeChangeBehavior)throw new TypeError("config.transform.fit, when provided, cannot differ from config.sizeChangeBehavior when config.sizeChangeBehavior is 'fill', 'contain' or 'cover', as sizeChangeBehavior already determines the fitting algorithm.");if(n.transform.rotate!==void 0&&![0,90,180,270].includes(n.transform.rotate))throw new TypeError("config.transform.rotate, when provided, must be 0, 90, 180 or 270.");if(n.transform.crop!==void 0&&Ar(n.transform.crop,"config.transform."),n.transform.process!==void 0&&typeof n.transform.process!="function")throw new TypeError("config.transform.process, when provided, must be a function.");if(n.transform.frameRate!==void 0&&(!Number.isFinite(n.transform.frameRate)||n.transform.frameRate<=0))throw new TypeError("config.transform.frameRate, when provided, must be a finite positive number.");if(n.transform.force!==void 0&&typeof n.transform.force!="boolean")throw new TypeError("config.transform.force, when provided, must be a boolean.")}if(n.onEncodedPacket!==void 0&&typeof n.onEncodedPacket!="function")throw new TypeError("config.onEncodedPacket, when provided, must be a function.");if(n.onEncoderConfig!==void 0&&typeof n.onEncoderConfig!="function")throw new TypeError("config.onEncoderConfig, when provided, must be a function.");pd(n.codec,n)},pd=(n,t)=>{if(!t||typeof t!="object")throw new TypeError("Encoding options must be an object.");if(t.alpha!==void 0&&!["discard","keep"].includes(t.alpha))throw new TypeError("options.alpha, when provided, must be 'discard' or 'keep'.");if(t.bitrateMode!==void 0&&!["constant","variable"].includes(t.bitrateMode))throw new TypeError("bitrateMode, when provided, must be 'constant' or 'variable'.");if(t.latencyMode!==void 0&&!["quality","realtime"].includes(t.latencyMode))throw new TypeError("latencyMode, when provided, must be 'quality' or 'realtime'.");if(t.fullCodecString!==void 0&&typeof t.fullCodecString!="string")throw new TypeError("fullCodecString, when provided, must be a string.");if(t.fullCodecString!==void 0&&Qe(t.fullCodecString)!==n)throw new TypeError(`fullCodecString, when provided, must be a string that matches the specified codec (${n}).`);if(t.hardwareAcceleration!==void 0&&!["no-preference","prefer-hardware","prefer-software"].includes(t.hardwareAcceleration))throw new TypeError("hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(t.scalabilityMode!==void 0&&typeof t.scalabilityMode!="string")throw new TypeError("scalabilityMode, when provided, must be a string.");if(t.contentHint!==void 0&&typeof t.contentHint!="string")throw new TypeError("contentHint, when provided, must be a string.")},Lc=n=>{let t=n.bitrate instanceof xe?n.bitrate._toVideoBitrate(n.codec,n.width,n.height):n.bitrate;return{codec:n.fullCodecString??wa(n.codec,n.width,n.height,t),width:n.width,height:n.height,displayWidth:n.squarePixelWidth,displayHeight:n.squarePixelHeight,bitrate:t,bitrateMode:n.bitrateMode,alpha:n.alpha??"discard",framerate:n.framerate,latencyMode:n.latencyMode,hardwareAcceleration:n.hardwareAcceleration,scalabilityMode:n.scalabilityMode,contentHint:n.contentHint,...Zu(n.codec)}},Xs=n=>{if(!n||typeof n!="object")throw new TypeError("Encoding config must be an object.");if(!ae.includes(n.codec))throw new TypeError(`Invalid audio codec '${n.codec}'. Must be one of: ${ae.join(", ")}.`);if(n.bitrate===void 0&&!(ee.includes(n.codec)||n.codec==="flac"))throw new TypeError("config.bitrate must be provided for compressed audio codecs.");if(n.bitrate!==void 0&&!(n.bitrate instanceof xe)&&(!Number.isInteger(n.bitrate)||n.bitrate<=0))throw new TypeError("config.bitrate, when provided, must be a positive integer or a quality.");if(n.transform!==void 0){if(typeof n.transform!="object"||!n.transform)throw new TypeError("config.transform, when provided, must be an object.");if(n.transform.numberOfChannels!==void 0&&(!Number.isInteger(n.transform.numberOfChannels)||n.transform.numberOfChannels<=0))throw new TypeError("config.transform.numberOfChannels, when provided, must be a positive integer.");if(n.transform.sampleRate!==void 0&&(!Number.isInteger(n.transform.sampleRate)||n.transform.sampleRate<=0))throw new TypeError("config.transform.sampleRate, when provided, must be a positive integer.");if(n.transform.sampleFormat!==void 0&&!["u8","s16","s32","f32"].includes(n.transform.sampleFormat))throw new TypeError("config.transform.sampleFormat, when provided, must be one of: u8, s16, s32, f32.");if(n.transform.process!==void 0&&typeof n.transform.process!="function")throw new TypeError("config.transform.process, when provided, must be a function.")}if(n.onEncodedPacket!==void 0&&typeof n.onEncodedPacket!="function")throw new TypeError("config.onEncodedPacket, when provided, must be a function.");if(n.onEncoderConfig!==void 0&&typeof n.onEncoderConfig!="function")throw new TypeError("config.onEncoderConfig, when provided, must be a function.");hd(n.codec,n)},hd=(n,t)=>{if(!t||typeof t!="object")throw new TypeError("Encoding options must be an object.");if(t.bitrateMode!==void 0&&!["constant","variable"].includes(t.bitrateMode))throw new TypeError("bitrateMode, when provided, must be 'constant' or 'variable'.");if(t.fullCodecString!==void 0&&typeof t.fullCodecString!="string")throw new TypeError("fullCodecString, when provided, must be a string.");if(t.fullCodecString!==void 0&&Qe(t.fullCodecString)!==n)throw new TypeError(`fullCodecString, when provided, must be a string that matches the specified codec (${n}).`)},Wc=n=>{let t=n.bitrate instanceof xe?n.bitrate._toAudioBitrate(n.codec):n.bitrate;return{codec:n.fullCodecString??Aa(n.codec,n.numberOfChannels,n.sampleRate),numberOfChannels:n.numberOfChannels,sampleRate:n.sampleRate,bitrate:t,bitrateMode:n.bitrateMode,...Ju(n.codec)}},xe=class{constructor(t){this._factor=t}_toVideoBitrate(t,e,r){let i=e*r,a={avc:1,hevc:.6,vp9:.6,av1:.4,vp8:1.2},s=1920*1080,o=3e6,c=Math.pow(i/s,.95),m=o*c*a[t]*this._factor;return Math.ceil(m/1e3)*1e3}_toAudioBitrate(t){if(ee.includes(t)||t==="flac")return;let r={aac:128e3,opus:64e3,mp3:16e4,vorbis:64e3,ac3:384e3,eac3:192e3}[t];if(!r)throw new Error(`Unhandled codec: ${t}`);let i=r*this._factor;return t==="aac"?i=[96e3,128e3,16e4,192e3].reduce((s,o)=>Math.abs(o-i)<Math.abs(s-i)?o:s):t==="opus"||t==="vorbis"?i=Math.max(6e3,i):t==="mp3"&&(i=[8e3,16e3,24e3,32e3,4e4,48e3,64e3,8e4,96e3,112e3,128e3,16e4,192e3,224e3,256e3,32e4].reduce((s,o)=>Math.abs(o-i)<Math.abs(s-i)?o:s)),Math.round(i/1e3)*1e3}},gd=new xe(.3),bd=new xe(.6),yd=new xe(1),Kn=new xe(2),kd=new xe(4),Td=n=>{if(te.includes(n))return Qn(n);if(ae.includes(n))return jn(n);if(Fe.includes(n))return Xn(n);throw new TypeError(`Unknown codec '${n}'.`)},Qn=async(n,t={})=>{let{width:e=1280,height:r=720,bitrate:i=1e6,...a}=t;if(!te.includes(n))return!1;if(!Number.isInteger(e)||e<=0)throw new TypeError("width must be a positive integer.");if(!Number.isInteger(r)||r<=0)throw new TypeError("height must be a positive integer.");if(!(i instanceof xe)&&(!Number.isInteger(i)||i<=0))throw new TypeError("bitrate must be a positive integer or a quality.");pd(n,a);let s=Lc({codec:n,width:e,height:r,bitrate:i,framerate:void 0,...a,alpha:"discard"}),o=JSON.stringify(s),c=Ks.get(o);if(c)return c;let u=(async()=>Hi.some(d=>d.supports(n,s))?!0:typeof VideoEncoder>"u"||(e%2===1||r%2===1)&&(n==="avc"||n==="hevc")||!(await VideoEncoder.isConfigSupported(s)).supported?!1:Nr()?new Promise(async d=>{try{let f=new VideoEncoder({output:()=>{},error:()=>d(!1)});f.configure(s);let p=new Uint8Array(e*r*4),b=new VideoFrame(p,{format:"RGBA",codedWidth:e,codedHeight:r,timestamp:0});f.encode(b),b.close(),await f.flush(),d(!0)}catch{d(!1)}}):!0)();return Ks.set(o,u),u},jn=async(n,t={})=>{let{numberOfChannels:e=2,sampleRate:r=48e3,bitrate:i=128e3,...a}=t;if(!ae.includes(n))return!1;if(!Number.isInteger(e)||e<=0)throw new TypeError("numberOfChannels must be a positive integer.");if(!Number.isInteger(r)||r<=0)throw new TypeError("sampleRate must be a positive integer.");if(!(i instanceof xe)&&(!Number.isInteger(i)||i<=0))throw new TypeError("bitrate must be a positive integer.");hd(n,a);let s=Wc({codec:n,numberOfChannels:e,sampleRate:r,bitrate:i,...a}),o=JSON.stringify(s),c=Qs.get(o);if(c)return c;let u=(async()=>qi.some(m=>m.supports(n,s))||ee.includes(n)?!0:typeof AudioEncoder>"u"?!1:(await AudioEncoder.isConfigSupported(s)).supported===!0)();return Qs.set(o,u),u},Xn=async n=>!!Fe.includes(n),wd=async()=>{let[n,t,e]=await Promise.all([Hc(),Wi(),qc()]);return[...n,...t,...e]},Hc=async(n=te,t)=>{let e=await Promise.all(n.map(r=>Qn(r,t)));return n.filter((r,i)=>e[i])},Wi=async(n=ae,t)=>{let e=await Promise.all(n.map(r=>jn(r,t)));return n.filter((r,i)=>e[i])},qc=async(n=Fe)=>{let t=await Promise.all(n.map(Xn));return n.filter((e,r)=>t[r])},$s=async(n,t)=>{for(let e of n)if(await Qn(e,t))return e;return null},Sd=async(n,t)=>{for(let e of n)if(await jn(e,t))return e;return null},Ad=async n=>{for(let t of n)if(await Xn(t))return t;return null};var $n=class{static supports(t,e){return!1}},Yn=class{static supports(t,e){return!1}},Zn=class{static supports(t,e){return!1}},Jn=class{static supports(t,e){return!1}},wr=[],Sr=[],Hi=[],qi=[],xd=n=>{if(n.prototype instanceof $n){let t=n;if(wr.includes(t)){console.warn("Video decoder already registered.");return}wr.push(t),Us.clear()}else if(n.prototype instanceof Yn){let t=n;if(Sr.includes(t)){console.warn("Audio decoder already registered.");return}Sr.push(t),zs.clear()}else throw new TypeError("Decoder must be a CustomVideoDecoder or CustomAudioDecoder.")},Pd=n=>{if(n.prototype instanceof Zn){let t=n;if(Hi.includes(t)){console.warn("Video encoder already registered.");return}Hi.push(t),Ks.clear()}else if(n.prototype instanceof Jn){let t=n;if(qi.includes(t)){console.warn("Audio encoder already registered.");return}qi.push(t),Qs.clear()}else throw new TypeError("Encoder must be a CustomVideoEncoder or CustomAudioEncoder.")};var Cd=n=>{let r=n,i=4096,a=0,s=12,o=0;for(r<0&&(r=-r,a=128),r+=33,r>8191&&(r=8191);(r&i)!==i&&s>=5;)i>>=1,s--;return o=r>>s-4&15,~(a|s-5<<4|o)&255},Id=n=>{let e=0,r=0,i=~n;i&128&&(i&=-129,e=-1),r=((i&240)>>4)+5;let a=(1<<r|(i&15)<<r-4|1<<r-5)-33;return e===0?a:-a},Ed=n=>{let e=2048,r=0,i=11,a=0,s=n;for(s<0&&(s=-s,r=128),s>4095&&(s=4095);(s&e)!==e&&i>=5;)e>>=1,i--;return a=s>>(i===4?1:i-4)&15,(r|i-4<<4|a)^85},vd=n=>{let t=0,e=0,r=n^85;r&128&&(r&=-129,t=-1),e=((r&240)>>4)+4;let i=0;return e!==4?i=1<<e|(r&15)<<e-4|1<<e-5:i=r<<1|1,t===0?i:-i};var ei=n=>{if(!n||typeof n!="object")throw new TypeError("options must be an object.");if(n.metadataOnly!==void 0&&typeof n.metadataOnly!="boolean")throw new TypeError("options.metadataOnly, when defined, must be a boolean.");if(n.verifyKeyPackets!==void 0&&typeof n.verifyKeyPackets!="boolean")throw new TypeError("options.verifyKeyPackets, when defined, must be a boolean.");if(n.verifyKeyPackets&&n.metadataOnly)throw new TypeError("options.verifyKeyPackets and options.metadataOnly cannot be enabled together.");if(n.skipLiveWait!==void 0&&typeof n.skipLiveWait!="boolean")throw new TypeError("options.skipLiveWait, when defined, must be a boolean.")},tr=n=>{if(!or(n))throw new TypeError("timestamp must be a number.")},Gc=(n,t,e)=>e.verifyKeyPackets?t.then(async r=>{if(!r||r.type==="delta")return r;let i=await n.determinePacketType(r);return i&&(r.type=i),r}):t,gt=class{constructor(t){if(!(t instanceof Cr))throw new TypeError("track must be an InputTrack.");this._track=t}async getFirstPacket(t={}){if(ei(t),this._track.input._disposed)throw new ge;return Gc(this._track,this._track._backing.getFirstPacket(t),t)}async getFirstKeyPacket(t={}){ei(t);let e=await this.getFirstPacket(t);return e?e.type==="key"?e:this.getNextKeyPacket(e,t):null}async getPacket(t,e={}){if(tr(t),ei(e),this._track.input._disposed)throw new ge;return Gc(this._track,this._track._backing.getPacket(t,e),e)}async getNextPacket(t,e={}){if(!(t instanceof Q))throw new TypeError("packet must be an EncodedPacket.");if(ei(e),this._track.input._disposed)throw new ge;return Gc(this._track,this._track._backing.getNextPacket(t,e),e)}async getKeyPacket(t,e={}){if(tr(t),ei(e),this._track.input._disposed)throw new ge;if(!e.verifyKeyPackets)return this._track._backing.getKeyPacket(t,e);let r=await this._track._backing.getKeyPacket(t,e);return r&&(h(r.type==="key"),await this._track.determinePacketType(r)==="delta"?this.getKeyPacket(r.timestamp-1/await this._track.getTimeResolution(),e):r)}async getNextKeyPacket(t,e={}){if(!(t instanceof Q))throw new TypeError("packet must be an EncodedPacket.");if(ei(e),this._track.input._disposed)throw new ge;if(!e.verifyKeyPackets)return this._track._backing.getNextKeyPacket(t,e);let r=await this._track._backing.getNextKeyPacket(t,e);return r&&(h(r.type==="key"),await this._track.determinePacketType(r)==="delta"?this.getNextKeyPacket(r,e):r)}packets(t,e,r={}){if(t!==void 0&&!(t instanceof Q))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 Q))throw new TypeError("endPacket must be an EncodedPacket.");if(ei(r),this._track.input._disposed)throw new ge;let i=[],{promise:a,resolve:s}=Z(),{promise:o,resolve:c}=Z(),u=!1,l=!1,m=null,d=[],f=()=>Math.max(2,d.length);(async()=>{let b=t??await this.getFirstPacket(r);for(;b&&!l&&!this._track.input._disposed&&!(e&&b.sequenceNumber>=e?.sequenceNumber);){if(i.length>f()){({promise:o,resolve:c}=Z()),await o;continue}i.push(b),s(),{promise:a,resolve:s}=Z(),b=await this.getNextPacket(b,r)}u=!0,s()})().catch(b=>{m||(m=b,s())});let p=this._track;return{async next(){for(;;){if(p.input._disposed)throw new ge;if(l)return{value:void 0,done:!0};if(m)throw m;if(i.length>0){let b=i.shift(),g=performance.now();for(d.push(g);d.length>0&&g-d[0]>=1e3;)d.shift();return c(),{value:b,done:!1}}else{if(u)return{value:void 0,done:!0};await a}}},async return(){return l=!0,c(),s(),{value:void 0,done:!0}},async throw(b){throw b},[Symbol.asyncIterator](){return this}}}},ea=class{constructor(t,e){this.onSample=t;this.onError=e}},Gi=class{mediaSamplesInRange(t=-1/0,e=1/0,r){tr(t),tr(e);let i=[],a=!1,s=null,{promise:o,resolve:c}=Z(),{promise:u,resolve:l}=Z(),m=!1,d=!1,f=!1,p=null,b={...r,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{let k=await this._createDecoder(A=>{if(l(),A.timestamp>=e&&(d=!0),d){A.close();return}s&&(A.timestamp>t?(i.push(s),a=!0):s.close()),A.timestamp>=t&&(i.push(A),a=!0),s=a?null:A,i.length>0&&(c(),{promise:o,resolve:c}=Z())},A=>{p||(p=A,c())}),w=this._createPacketSink(),T=await w.getKeyPacket(t,b)??await w.getFirstKeyPacket(b),S=T,P=w.packets(T??void 0,void 0,b);for(await P.next();S&&!d&&!this._track.input._disposed;){let A=_d(i.length);if(i.length+k.getDecodeQueueSize()>A){({promise:u,resolve:l}=Z()),await u;continue}k.decode(S);let C=await P.next();if(C.done)break;S=C.value}await P.return(),!f&&!this._track.input._disposed&&await k.flush(),k.close(),!a&&s&&i.push(s),m=!0,c()})().catch(k=>{p||(p=k,c())});let g=this._track,y=()=>{s?.close();for(let k of i)k.close()};return{async next(){for(;;){if(g.input._disposed)throw y(),new ge;if(f)return{value:void 0,done:!0};if(p)throw y(),p;if(i.length>0){let k=i.shift();return l(),{value:k,done:!1}}else if(!m)await o;else return{value:void 0,done:!0}}},async return(){return f=!0,d=!0,l(),c(),y(),{value:void 0,done:!0}},async throw(k){throw k},[Symbol.asyncIterator](){return this}}}mediaSamplesAtTimestamps(t,e){Iu(t);let r=Cu(t),i=[],a=[],{promise:s,resolve:o}=Z(),{promise:c,resolve:u}=Z(),l=!1,m=!1,d=null,f=y=>{a.push(y),o(),{promise:s,resolve:o}=Z()},p={...e,verifyKeyPackets:!0,metadataOnly:!1};(async()=>{let y=await this._createDecoder(A=>{if(u(),m){A.close();return}let C=0;for(;i.length>0&&A.timestamp-i[0]>-1e-10;)C++,i.shift();if(C>0)for(let I=0;I<C;I++)f(I<C-1?A.clone():A);else A.close()},A=>{d||(d=A,o())}),k=this._createPacketSink(),w=null,T=null,S=-1,x=async()=>{h(T);let A=T;for(y.decode(A);A.sequenceNumber<S;){let C=_d(a.length);for(;a.length+y.getDecodeQueueSize()>C&&!m;)({promise:c,resolve:u}=Z()),await c;if(m)break;let I=await k.getNextPacket(A,p);h(I),y.decode(I),A=I}S=-1},P=async()=>{await y.flush();for(let A=0;A<i.length;A++)f(null);i.length=0};for await(let A of r){if(tr(A),m||this._track.input._disposed)break;let C=await k.getPacket(A,p),I=C&&await k.getKeyPacket(A,p);if(!I){S!==-1&&(await x(),await P()),f(null),w=null;continue}w&&(I.sequenceNumber!==T.sequenceNumber||C.timestamp<w.timestamp)&&(await x(),await P()),i.push(C.timestamp),S=Math.max(C.sequenceNumber,S),w=C,T=I}!m&&!this._track.input._disposed&&(S!==-1&&await x(),await P()),y.close(),l=!0,o()})().catch(y=>{d||(d=y,o())});let b=this._track,g=()=>{for(let y of a)y?.close()};return{async next(){for(;;){if(b.input._disposed)throw g(),new ge;if(m)return{value:void 0,done:!0};if(d)throw g(),d;if(a.length>0){let y=a.shift();return h(y!==void 0),u(),{value:y,done:!1}}else if(!l)await s;else return{value:void 0,done:!0}}},async return(){return m=!0,u(),o(),g(),{value:void 0,done:!0}},async throw(y){throw y},[Symbol.asyncIterator](){return this}}}},_d=n=>n===0?40:8,Kc=class extends ea{constructor(e,r,i,a,s,o){super(e,r);this.codec=i;this.decoderConfig=a;this.rotation=s;this.timeResolution=o;this.decoder=null;this.customDecoder=null;this.customDecoderCallSerializer=new Mt;this.customDecoderQueueSize=0;this.inputTimestamps=[];this.sampleQueue=[];this.currentPacketIndex=0;this.raslSkipped=!1;this.alphaDecoder=null;this.alphaHadKeyframe=!1;this.colorQueue=[];this.alphaQueue=[];this.merger=null;this.decodedAlphaChunkCount=0;this.alphaDecoderQueueSize=0;this.nullAlphaFrameQueue=[];this.currentAlphaPacketIndex=0;this.alphaRaslSkipped=!1;this.frameHandlerSerializer=new Mt;let c=wr.find(u=>u.supports(i,a));if(c)this.customDecoder=new c,this.customDecoder.codec=i,this.customDecoder.config=a,this.customDecoder.onSample=u=>{if(!(u instanceof ke))throw new TypeError("The argument passed to onSample must be a VideoSample.");this.finalizeAndEmitSample(u)},this.customDecoderCallSerializer.call(()=>this.customDecoder.init());else{let u=m=>{this.frameHandlerSerializer.call(async()=>{if(this.alphaQueue.length>0){let d=this.alphaQueue.shift();h(d!==void 0),await this.mergeAlpha(m,d)}else this.colorQueue.push(m)}).catch(d=>this.onError(d))};if(i==="avc"&&this.decoderConfig.description&&on()){let m=Ra(j(this.decoderConfig.description));if(m&&m.sequenceParameterSets.length>0){let d=fn(m.sequenceParameterSets[0]);d&&d.frameMbsOnlyFlag===0&&(this.decoderConfig={...this.decoderConfig,hardwareAcceleration:"prefer-software"})}}let l=new Error("Decoding error").stack;this.decoder=new VideoDecoder({output:m=>{try{u(m)}catch(d){this.onError(d)}},error:m=>{m.stack=l,this.onError(m)}}),this.decoder.configure(this.decoderConfig)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(h(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(h(this.decoder),sr()||Wo(this.inputTimestamps,e.timestamp,r=>r),on()&&this.currentPacketIndex===0){if(this.codec==="avc"){let r=[];for(let a of $o(e.data,this.decoderConfig)){let s=qt(e.data[a.offset]);s>=20&&s<=31||r.push(e.data.subarray(a.offset,a.offset+a.length))}let i=nl(r,this.decoderConfig);e=new Q(i,e.type,e.timestamp,e.duration)}else if(this.codec==="hevc"){let r=ul(e.data,this.decoderConfig);r&&(e=new Q(r,e.type,e.timestamp,e.duration))}}this.decoder.decode(e.toEncodedVideoChunk()),this.decodeAlphaData(e)}this.currentPacketIndex++}decodeAlphaData(e){if(!e.sideData.alpha){this.pushNullAlphaFrame();return}if(this.merger||(this.merger=new Qc),!this.alphaDecoder){let i=s=>{this.frameHandlerSerializer.call(async()=>{if(this.colorQueue.length>0){let o=this.colorQueue.shift();h(o!==void 0),await 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();h(o!==void 0),await this.mergeAlpha(o,null)}else this.alphaQueue.push(null);this.alphaDecoderQueueSize--}).catch(o=>this.onError(o))},a=new Error("Decoding error").stack;this.alphaDecoder=new VideoDecoder({output:s=>{try{i(s)}catch(o){this.onError(o)}},error:s=>{s.stack=a,this.onError(s)}}),this.alphaDecoder.configure(this.decoderConfig)}let r=pr(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 dn(e,this.decoderConfig)){let i=st(e[r.offset]);if(i===8||i===9)return!0}return!1}sampleHandler(e){if(sr()){if(this.sampleQueue.length>0&&e.timestamp>=X(this.sampleQueue).timestamp){for(let r of this.sampleQueue)this.finalizeAndEmitSample(r);this.sampleQueue.length=0}Wo(this.sampleQueue,e,r=>r.timestamp)}else{let r=this.inputTimestamps.shift();h(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)}async mergeAlpha(e,r){if(!r){let s=new ke(e);this.sampleHandler(s);return}h(this.merger);let i=await this.merger.update(e,r),a=new ke(i);this.sampleHandler(a)}async flush(){if(this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(h(this.decoder),await Promise.all([this.decoder.flush(),this.alphaDecoder?.flush()]),await this.frameHandlerSerializer.currentPromise,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),sr()){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()):(h(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}},Rd=!1,Js=class Js{constructor(){this.canvas=null;this.gl=null;this.program=null;this.vao=null;this.colorTexture=null;this.alphaTexture=null;this.worker=null;this.pendingRequests=new Map;this.nextRequestId=0;let t=typeof OffscreenCanvas<"u"||typeof document<"u"&&typeof document.createElement=="function";if(!Js.forceCpu&&t&&!Rd)try{typeof OffscreenCanvas<"u"?this.canvas=new OffscreenCanvas(300,150):this.canvas=document.createElement("canvas");let e=this.canvas.getContext("webgl2",{premultipliedAlpha:!1});if(!e)throw new Error("Couldn't acquire WebGL 2 context.");this.gl=e,this.program=this.createProgram(),this.vao=this.createVAO(),this.colorTexture=this.createTexture(),this.alphaTexture=this.createTexture(),this.gl.useProgram(this.program),this.gl.uniform1i(this.gl.getUniformLocation(this.program,"u_colorTexture"),0),this.gl.uniform1i(this.gl.getUniformLocation(this.program,"u_alphaTexture"),1)}catch(e){this.gl=null,this.canvas=null,Rd=!0,console.warn("Falling back to CPU for color/alpha merging.",e)}}async update(t,e){return this.gl?this.updateGpu(t,e):this.updateCpu(t,e)}createProgram(){h(this.gl);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){h(this.gl);let r=this.gl.createShader(t);return this.gl.shaderSource(r,e),this.gl.compileShader(r),r}createVAO(){h(this.gl),h(this.program);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 i=this.gl.getAttribLocation(this.program,"a_position"),a=this.gl.getAttribLocation(this.program,"a_texCoord");return this.gl.enableVertexAttribArray(i),this.gl.vertexAttribPointer(i,2,this.gl.FLOAT,!1,16,0),this.gl.enableVertexAttribArray(a),this.gl.vertexAttribPointer(a,2,this.gl.FLOAT,!1,16,8),t}createTexture(){h(this.gl);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}updateGpu(t,e){h(this.gl),h(this.canvas),(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);let r=new VideoFrame(this.canvas,{timestamp:t.timestamp,duration:t.duration??void 0});return t.close(),e.close(),r}updateCpu(t,e){if(!this.worker){let a=new Blob([`(${ff.toString()})()`],{type:"application/javascript"}),s=URL.createObjectURL(a);this.worker=new Worker(s),URL.revokeObjectURL(s),this.worker.addEventListener("message",o=>{let c=o.data,u=this.pendingRequests.get(c.id);u&&(this.pendingRequests.delete(c.id),"error"in c?u.reject(new Error(c.error)):u.resolve(c.frame))}),this.worker.addEventListener("error",o=>{let c=new Error(o.message||"Color/alpha merge worker error.");for(let u of this.pendingRequests.values())u.reject(c);this.pendingRequests.clear()})}let r=this.nextRequestId++,i=Z();return this.pendingRequests.set(r,i),this.worker.postMessage({id:r,color:t,alpha:e},{transfer:[t,e]}),i.promise}close(){this.gl?.getExtension("WEBGL_lose_context")?.loseContext(),this.gl=null,this.canvas=null,this.worker?.terminate(),this.worker=null;let t=new Error("Color/alpha merger closed.");for(let e of this.pendingRequests.values())e.reject(t);this.pendingRequests.clear()}};Js.forceCpu=!0;var Qc=Js,ff=()=>{let n=null,t=null,e=Promise.resolve();self.addEventListener("message",c=>{let{id:u,color:l,alpha:m}=c.data;e=e.then(async()=>{try{let d=await r(l,m);self.postMessage({id:u,frame:d},{transfer:[d]})}catch(d){self.postMessage({id:u,error:d.message})}finally{l.close(),m.close()}})});let r=async(c,u)=>{let l=c.format,m=u.format;if(!l||!m)throw new Error("CPU color/alpha merging requires a known VideoFrame format.");let d=l.includes("P10"),f=l.includes("P12"),p=m.includes("P10"),b=m.includes("P12");if(p!==d||b!==f)throw new Error(`CPU color/alpha merging requires the alpha frame to have the same bit depth as the color frame (color: '${l}', alpha: '${m}').`);let g=c.codedWidth,y=c.codedHeight;if(l==="RGBX"||l==="RGBA"||l==="BGRX"||l==="BGRA")return await i(c,u,g,y,l);if(l==="I420"||l==="I420P10"||l==="I420P12"||l==="I422"||l==="I422P10"||l==="I422P12"||l==="I444"||l==="I444P10"||l==="I444P12")return await a(c,u,g,y,l);if(l==="NV12")return await s(c,u,g,y);throw new Error(`CPU color/alpha merging does not support format '${l}'.`)},i=async(c,u,l,m,d)=>{let f=l*m,p=new Uint8Array(f*4);await c.copyTo(p);let b=await o(u,l,m,1);for(let k=0,w=3;k<f;k++,w+=4)p[w]=b[k];let y={format:d==="RGBX"||d==="RGBA"?"RGBA":"BGRA",codedWidth:l,codedHeight:m,timestamp:c.timestamp,duration:c.duration??void 0,transfer:[p.buffer]};return new VideoFrame(p,y)},a=async(c,u,l,m,d)=>{let f=d.includes("P10"),p=d.includes("P12"),b=f||p?2:1,g,y;d.startsWith("I420")?(g=Math.ceil(l/2),y=Math.ceil(m/2)):d.startsWith("I422")?(g=Math.ceil(l/2),y=m):(g=l,y=m);let k=l*m,w=g*y,T=k*b,S=w*b,x=k*b,P=T+2*S+x,A=new Uint8Array(P);await c.copyTo(A);let C=await o(u,l,m,b),I=T+2*S;A.set(C,I);let v={format:d.slice(0,4)+"A"+d.slice(4),codedWidth:l,codedHeight:m,timestamp:c.timestamp,duration:c.duration??void 0,transfer:[A.buffer]};return new VideoFrame(A,v)},s=async(c,u,l,m)=>{let d=l*m,f=Math.ceil(l/2),p=Math.ceil(m/2),b=f*p,g=c.allocationSize();(!t||t.byteLength!==g)&&(t=new Uint8Array(g)),await c.copyTo(t);let y=new Uint8Array(d+2*b+d);y.set(t.subarray(0,d),0);let k=d,w=d+b,T=d;for(let P=0;P<b;P++)y[k+P]=t[T+P*2],y[w+P]=t[T+P*2+1];let S=await o(u,l,m,1);y.set(S,d+2*b);let x={format:"I420A",codedWidth:l,codedHeight:m,timestamp:c.timestamp,duration:c.duration??void 0,transfer:[y.buffer]};return new VideoFrame(y,x)},o=async(c,u,l,m)=>{let d=c.allocationSize();(!n||n.byteLength!==d)&&(n=new Uint8Array(d)),await c.copyTo(n);let f=c.format;if(f==="RGBA"||f==="BGRA"||f==="RGBX"||f==="BGRX"){let p=f==="RGBA"||f==="RGBX"?0:2,b=u*l;for(let g=0;g<b;g++)n[g]=n[g*4+p];return n.subarray(0,b)}else return n.subarray(0,u*l*m)}},xr=class extends Gi{constructor(t){if(!(t instanceof Pt))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=await this._track.getCodec(),i=await this._track.getRotation(),a=await this._track.getDecoderConfig(),s=await this._track.getTimeResolution();return h(r&&a),new Kc(t,e,r,a,i,s)}_createPacketSink(){return new gt(this._track)}async getSample(t,e={}){tr(t);for await(let r of this.mediaSamplesAtTimestamps([t],e))return r;throw new Error("Internal error: Iterator returned nothing.")}samples(t,e,r={}){return this.mediaSamplesInRange(t,e,r)}samplesAtTimestamps(t,e={}){return this.mediaSamplesAtTimestamps(t,e)}},Ys=class{constructor(t,e={}){this._rotation=0;this._initPromise=null;this._nextCanvasIndex=0;if(!(t instanceof Pt))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&&Ar(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.");this._videoTrack=t,this._alpha=e.alpha??!1,this._options=e,this._fit=e.fit??"fill",this._videoSampleSink=new xr(t),this._canvasPool=Array.from({length:e.poolSize??0},()=>null)}_ensureInit(){return this._initPromise??=(async()=>{let t=this._options,e=this._videoTrack,r=t.rotation??await e.getRotation(),i=await e.getSquarePixelWidth(),a=await e.getSquarePixelHeight(),[s,o]=r%180===0?[i,a]:[a,i],c=t.crop;c&&(c=Li(c,s,o));let[u,l]=c?[c.width,c.height]:[s,o],m=u/l;t.width!==void 0&&t.height===void 0?(u=t.width,l=Math.round(u/m)):t.width===void 0&&t.height!==void 0?(l=t.height,u=Math.round(l*m)):t.width!==void 0&&t.height!==void 0&&(u=t.width,l=t.height),this._width=u,this._height=l,this._rotation=r,this._crop=c})()}_videoSampleToWrappedCanvas(t){let e=this._width,r=this._height,i=this._canvasPool[this._nextCanvasIndex],a=!1;i||(typeof document<"u"?(i=document.createElement("canvas"),i.width=e,i.height=r):i=new OffscreenCanvas(e,r),this._canvasPool.length>0&&(this._canvasPool[this._nextCanvasIndex]=i),a=!0),this._canvasPool.length>0&&(this._nextCanvasIndex=(this._nextCanvasIndex+1)%this._canvasPool.length);let s=i.getContext("2d",{alpha:this._alpha||Nr()});h(s),s.resetTransform(),a||(!this._alpha&&Nr()?(s.fillStyle="black",s.fillRect(0,0,e,r)):s.clearRect(0,0,e,r)),t.drawWithFit(s,{fit:this._fit,rotation:this._rotation,crop:this._crop});let o={canvas:i,timestamp:t.timestamp,duration:t.duration};return t.close(),o}async getCanvas(t,e){tr(t),await this._ensureInit();let r=await this._videoSampleSink.getSample(t,e);return r&&this._videoSampleToWrappedCanvas(r)}async*canvases(t,e,r){await this._ensureInit(),yield*an(this._videoSampleSink.samples(t,e,r),i=>this._videoSampleToWrappedCanvas(i))}async*canvasesAtTimestamps(t,e){await this._ensureInit(),yield*an(this._videoSampleSink.samplesAtTimestamps(t,e),r=>r&&this._videoSampleToWrappedCanvas(r))}},jc=class extends ea{constructor(e,r,i,a){super(e,r);this.decoder=null;this.customDecoder=null;this.customDecoderCallSerializer=new Mt;this.customDecoderQueueSize=0;this.currentTimestamp=null;this.expectedFirstTimestamp=null;this.timestampOffset=0;let s=c=>{let u=c.timestamp;this.expectedFirstTimestamp&&this.currentTimestamp===null&&(this.timestampOffset=this.expectedFirstTimestamp-u),u+=this.timestampOffset,(this.currentTimestamp===null||Math.abs(u-this.currentTimestamp)>=c.duration)&&(this.currentTimestamp=u);let l=this.currentTimestamp;if(this.currentTimestamp+=c.duration,c.numberOfFrames===0){c.close();return}let m=a.sampleRate;c.setTimestamp(Math.round(l*m)/m),e(c)},o=Sr.find(c=>c.supports(i,a));if(o)this.customDecoder=new o,this.customDecoder.codec=i,this.customDecoder.config=a,this.customDecoder.onSample=c=>{if(!(c instanceof be))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 be(u))}catch(l){this.onError(l)}},error:u=>{u.stack=c,this.onError(u)}}),this.decoder.configure(a)}}getDecodeQueueSize(){return this.customDecoder?this.customDecoderQueueSize:(h(this.decoder),this.decoder.decodeQueueSize)}decode(e){this.customDecoder?(this.customDecoderQueueSize++,this.customDecoderCallSerializer.call(()=>this.customDecoder.decode(e)).then(()=>this.customDecoderQueueSize--)):(h(this.decoder),this.expectedFirstTimestamp??=e.timestamp,this.decoder.decode(e.toEncodedAudioChunk()))}async flush(){this.customDecoder?await this.customDecoderCallSerializer.call(()=>this.customDecoder.flush()):(h(this.decoder),await this.decoder.flush()),this.currentTimestamp=null,this.expectedFirstTimestamp=null,this.timestampOffset=0}close(){this.customDecoder?this.customDecoderCallSerializer.call(()=>this.customDecoder.close()):(h(this.decoder),this.decoder.close())}},Xc=class extends ea{constructor(e,r,i){super(e,r);this.decoderConfig=i;this.currentTimestamp=null;h(ee.includes(i.codec)),this.codec=i.codec;let{dataType:a,sampleSize:s,littleEndian:o}=Ae(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)=>Id(c.getUint8(u)):a==="alaw"?this.readInputValue=(c,u)=>vd(c.getUint8(u)):h(!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):h(!1);break;case 3:a==="unsigned"?this.readInputValue=(c,u)=>Ur(c,u,o)-2**23:a==="signed"?this.readInputValue=(c,u)=>Eu(c,u,o):h(!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):h(!1);break;case 8:a==="float"?this.readInputValue=(c,u)=>c.getFloat64(u,o):h(!1);break;default:ne(s),h(!1)}switch(s){case 1:a==="ulaw"||a==="alaw"?(this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(c,u,l)=>c.setInt16(u,l,!0)):(this.outputSampleSize=1,this.outputFormat="u8",this.writeOutputValue=(c,u,l)=>c.setUint8(u,l+2**7));break;case 2:this.outputSampleSize=2,this.outputFormat="s16",this.writeOutputValue=(c,u,l)=>c.setInt16(u,l,!0);break;case 3:this.outputSampleSize=4,this.outputFormat="s32",this.writeOutputValue=(c,u,l)=>c.setInt32(u,l<<8,!0);break;case 4:this.outputSampleSize=4,a==="float"?(this.outputFormat="f32",this.writeOutputValue=(c,u,l)=>c.setFloat32(u,l,!0)):(this.outputFormat="s32",this.writeOutputValue=(c,u,l)=>c.setInt32(u,l,!0));break;case 8:this.outputSampleSize=4,this.outputFormat="f32",this.writeOutputValue=(c,u,l)=>c.setFloat32(u,l,!0);break;default:ne(s),h(!1)}}getDecodeQueueSize(){return 0}decode(e){let r=V(e.data),i=e.byteLength/this.decoderConfig.numberOfChannels/this.inputSampleSize,a=i*this.decoderConfig.numberOfChannels*this.outputSampleSize,s=new ArrayBuffer(a),o=new DataView(s);for(let m=0;m<i*this.decoderConfig.numberOfChannels;m++){let d=m*this.inputSampleSize,f=m*this.outputSampleSize,p=this.readInputValue(r,d);this.writeOutputValue(o,f,p)}let c=i/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 l=new be({format:this.outputFormat,data:s,numberOfChannels:this.decoderConfig.numberOfChannels,sampleRate:this.decoderConfig.sampleRate,numberOfFrames:i,timestamp:u});this.onSample(l)}async flush(){}close(){}},Pr=class extends Gi{constructor(t){if(!(t instanceof Ct))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=await this._track.getCodec(),i=await this._track.getDecoderConfig();return h(r&&i),ee.includes(i.codec)?new Xc(t,e,i):new jc(t,e,r,i)}_createPacketSink(){return new gt(this._track)}async getSample(t,e={}){tr(t);for await(let r of this.mediaSamplesAtTimestamps([t],e))return r;throw new Error("Internal error: Iterator returned nothing.")}samples(t,e,r={}){return this.mediaSamplesInRange(t,e,r)}samplesAtTimestamps(t,e={}){return this.mediaSamplesAtTimestamps(t,e)}},Zs=class{constructor(t){if(!(t instanceof Ct))throw new TypeError("audioTrack must be an InputAudioTrack.");this._audioSampleSink=new Pr(t)}_audioSampleToWrappedArrayBuffer(t){let e={buffer:t.toAudioBuffer(),timestamp:t.timestamp,duration:t.duration};return t.close(),e}async getBuffer(t,e){tr(t);let r=await this._audioSampleSink.getSample(t,e);return r&&this._audioSampleToWrappedArrayBuffer(r)}buffers(t,e,r){return an(this._audioSampleSink.samples(t,e,r),i=>this._audioSampleToWrappedArrayBuffer(i))}buffersAtTimestamps(t,e){return an(this._audioSampleSink.samplesAtTimestamps(t,e),r=>r&&this._audioSampleToWrappedArrayBuffer(r))}};var Cr=class n{constructor(t,e){this.input=t,this._backing=e}isVideoTrack(){return this instanceof Pt}isAudioTrack(){return this instanceof Ct}get id(){return this._backing.getId()}get number(){return this._backing.getNumber()}async getInternalCodecId(){return this._backing.getInternalCodecId()}get internalCodecId(){return ce(this._backing.getInternalCodecId(),"internalCodecId","getInternalCodecId")}async getLanguageCode(){return this._backing.getLanguageCode()}get languageCode(){return ce(this._backing.getLanguageCode(),"languageCode","getLanguageCode")}async getName(){return this._backing.getName()}get name(){return ce(this._backing.getName(),"name","getName")}async getTimeResolution(){return this._backing.getTimeResolution()}get timeResolution(){return ce(this._backing.getTimeResolution(),"timeResolution","getTimeResolution")}async isRelativeToUnixEpoch(){return this._backing.isRelativeToUnixEpoch()}async getDisposition(){return this._backing.getDisposition()}get disposition(){return ce(this._backing.getDisposition(),"disposition","getDisposition")}async getBitrate(){return this._backing.getBitrate()}async getAverageBitrate(){return this._backing.getAverageBitrate()}async getFirstTimestamp(){return(await this._backing.getFirstPacket({metadataOnly:!0}))?.timestamp??0}async computeDuration(t){let e=await this._backing.getPacket(1/0,{metadataOnly:!0,...t}),r=(e?.timestamp??0)+(e?.duration??0);return Tt(r,await this.getTimeResolution())}async getDurationFromMetadata(t={}){return this._backing.getDurationFromMetadata(t)}async computePacketStats(t=1/0,e){let r=new gt(this),i=1/0,a=-1/0,s=0,o=0;for await(let c of r.packets(void 0,void 0,{metadataOnly:!0,...e})){if(s>=t&&c.timestamp>=a)break;i=Math.min(i,c.timestamp),a=Math.max(a,c.timestamp+c.duration),s++,o+=c.byteLength}return{packetCount:s,averagePacketRate:s?Number((s/(a-i)).toPrecision(16)):0,averageBitrate:s?Number((8*o/(a-i)).toPrecision(16)):0}}async isLive(){return await this._backing.getLiveRefreshInterval()!==null}async getLiveRefreshInterval(){return this._backing.getLiveRefreshInterval()}canBePairedWith(t){if(!(t instanceof n))throw new TypeError("other must be an InputTrack.");return this.input!==t.input||this===t?!1:(this._backing.getPairingMask()&t._backing.getPairingMask())!==0n}async getPairableTracks(t){return this.input.getTracks(Ir({filter:e=>e.canBePairedWith(this)},t))}async getPairableVideoTracks(t){return this.input.getVideoTracks(Ir({filter:e=>e.canBePairedWith(this)},t))}async getPairableAudioTracks(t){return this.input.getAudioTracks(Ir({filter:e=>e.canBePairedWith(this)},t))}async getPrimaryPairableVideoTrack(t){return this.input.getPrimaryVideoTrack(Ir({filter:e=>e.canBePairedWith(this)},t))}async getPrimaryPairableAudioTrack(t){return this.input.getPrimaryAudioTrack(Ir({filter:e=>e.canBePairedWith(this)},t))}async hasPairableTrack(t){t&&=$c(t);let e=await this.input.getTracks();for(let r of e)if(this.canBePairedWith(r)&&(!t||await t(r)))return!0;return!1}hasPairableVideoTrack(t){return t&&=$c(t),this.hasPairableTrack(async e=>e.isVideoTrack()&&(!t||await t(e)))}hasPairableAudioTrack(t){return t&&=$c(t),this.hasPairableTrack(async e=>e.isAudioTrack()&&(!t||await t(e)))}},ce=(n,t,e)=>{if(n instanceof Promise)throw new Error(`'${t}' is deprecated and not available synchronously for this track. Use the preferred '${e}()' instead.`);return n},$c=n=>{if(n!==void 0&&typeof n!="function")throw new TypeError("predicate, when provided, must be a function.");return n?t=>{let e=i=>{if(typeof i!="boolean")throw new TypeError("predicate must return or resolve to a boolean value.");return i},r=n(t);return r instanceof Promise?r.then(e):e(r)}:void 0},Pt=class extends Cr{constructor(e,r){super(e,r);this._pixelAspectRatioCache=null;this._backing=r}get type(){return"video"}async getCodec(){return this._backing.getCodec()}get codec(){return ce(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await this._backing.getHasOnlyKeyPackets?.()??!1}async getCodedWidth(){return this._backing.getCodedWidth()}get codedWidth(){return ce(this._backing.getCodedWidth(),"codedWidth","getCodedWidth")}async getCodedHeight(){return this._backing.getCodedHeight()}get codedHeight(){return ce(this._backing.getCodedHeight(),"codedHeight","getCodedHeight")}async getRotation(){return this._backing.getRotation()}get rotation(){return ce(this._backing.getRotation(),"rotation","getRotation")}async getSquarePixelWidth(){return this._backing.getSquarePixelWidth()}get squarePixelWidth(){return ce(this._backing.getSquarePixelWidth(),"squarePixelWidth","getSquarePixelWidth")}async getSquarePixelHeight(){return this._backing.getSquarePixelHeight()}get squarePixelHeight(){return ce(this._backing.getSquarePixelHeight(),"squarePixelHeight","getSquarePixelHeight")}async getPixelAspectRatio(){return this._pixelAspectRatioCache??=zt({num:await this.getSquarePixelWidth()*await this.getCodedHeight(),den:await this.getSquarePixelHeight()*await this.getCodedWidth()})}get pixelAspectRatio(){return this._pixelAspectRatioCache??=zt({num:ce(this._backing.getSquarePixelWidth(),"pixelAspectRatio","getPixelAspectRatio")*ce(this._backing.getCodedHeight(),"pixelAspectRatio","getPixelAspectRatio"),den:ce(this._backing.getSquarePixelHeight(),"pixelAspectRatio","getPixelAspectRatio")*ce(this._backing.getCodedWidth(),"pixelAspectRatio","getPixelAspectRatio")})}async getDisplayWidth(){let e=await this._backing.getMetadataDisplayWidth?.();return e??(await this.getRotation()%180===0?this.getSquarePixelWidth():this.getSquarePixelHeight())}get displayWidth(){let e=this._backing.getMetadataDisplayWidth?.();if(e!==void 0){let a=ce(e,"displayWidth","getDisplayWidth");if(a!==null)return a}let i=ce(this._backing.getRotation(),"displayWidth","getDisplayWidth")%180===0?this._backing.getSquarePixelWidth():this._backing.getSquarePixelHeight();return ce(i,"displayWidth","getDisplayWidth")}async getDisplayHeight(){let e=await this._backing.getMetadataDisplayHeight?.();return e??(await this.getRotation()%180===0?this.getSquarePixelHeight():this.getSquarePixelWidth())}get displayHeight(){let e=this._backing.getMetadataDisplayHeight?.();if(e!==void 0){let a=ce(e,"displayHeight","getDisplayHeight");if(a!==null)return a}let i=ce(this._backing.getRotation(),"displayHeight","getDisplayHeight")%180===0?this._backing.getSquarePixelHeight():this._backing.getSquarePixelWidth();return ce(i,"displayHeight","getDisplayHeight")}async getColorSpace(){return this._backing.getColorSpace()}async hasHighDynamicRange(){let e=await this._backing.getColorSpace();return e.primaries==="bt2020"||e.primaries==="smpte432"||e.transfer==="pg"||e.transfer==="hlg"||e.matrix==="bt2020-ncl"}async canBeTransparent(){return this._backing.canBeTransparent()}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){let e=await this._backing.getMetadataCodecParameterString?.();return e??(await this._backing.getDecoderConfig())?.codec??null}async canDecode(){try{let e=await this._backing.getDecoderConfig();if(!e)return!1;let r=await this._backing.getCodec();return h(r!==null),wr.some(a=>a.supports(r,e))?!0:typeof VideoDecoder>"u"?!1:(await VideoDecoder.isConfigSupported(e)).supported===!0}catch(e){return console.error("Error during decodability check:",e),!1}}async determinePacketType(e){if(!(e instanceof Q))throw new TypeError("packet must be an EncodedPacket.");if(e.isMetadataOnly)throw new TypeError("packet must not be metadata-only to determine its type.");let r=await this.getCodec();if(r===null)return null;let i=await this.getDecoderConfig();return h(i),pr(r,i,e.data)}},Ct=class extends Cr{constructor(t,e){super(t,e),this._backing=e}get type(){return"audio"}async getCodec(){return this._backing.getCodec()}get codec(){return ce(this._backing.getCodec(),"codec","getCodec")}async hasOnlyKeyPackets(){return await this._backing.getHasOnlyKeyPackets?.()??!0}async getNumberOfChannels(){return this._backing.getNumberOfChannels()}get numberOfChannels(){return ce(this._backing.getNumberOfChannels(),"numberOfChannels","getNumberOfChannels")}async getSampleRate(){return this._backing.getSampleRate()}get sampleRate(){return ce(this._backing.getSampleRate(),"sampleRate","getSampleRate")}async getDecoderConfig(){return this._backing.getDecoderConfig()}async getCodecParameterString(){let t=await this._backing.getMetadataCodecParameterString?.();return t??(await this._backing.getDecoderConfig())?.codec??null}async canDecode(){try{let t=await this._backing.getDecoderConfig();if(!t)return!1;let e=await this._backing.getCodec();return h(e!==null),Sr.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 Q))throw new TypeError("packet must be an EncodedPacket.");return await this.getCodec()===null?null:"key"}},Fd=n=>n??1/0,ta=n=>-(n??-1/0),Er=n=>-n,Ki=n=>{if(typeof n!="object"||!n)throw new TypeError("query must be an object.");if(n.filter!==void 0&&typeof n.filter!="function")throw new TypeError("query.filter, when provided, must be a function.");if(n.sortBy!==void 0&&typeof n.sortBy!="function")throw new TypeError("query.sortBy, when provided, must be a function.");return{filter:n.filter?t=>{let e=i=>{if(typeof i!="boolean")throw new TypeError("query.filter must return or resolve to a boolean.");return i},r=n.filter(t);return r instanceof Promise?r.then(e):e(r)}:void 0,sortBy:n.sortBy?t=>{let e=i=>{if(typeof i!="number"&&(!Array.isArray(i)||!i.every(a=>typeof a=="number")))throw new TypeError("query.sortBy must return or resolve to a number or an array of numbers.");return i},r=n.sortBy(t);return r instanceof Promise?r.then(e):e(r)}:void 0}},Ir=(n,t)=>({filter:n?.filter||t?.filter?e=>{let r=n?.filter?.(e)??!0,i=a=>a===!1?!1:t?.filter?.(e)??!0;return r instanceof Promise?r.then(i):i(r)}:void 0,sortBy:n?.sortBy||t?.sortBy?e=>{let r=n?.sortBy?.(e)??[],i=t?.sortBy?.(e)??[],a=(s,o)=>[...Array.isArray(s)?s:[s],...Array.isArray(o)?o:[o]];return r instanceof Promise||i instanceof Promise?Promise.all([r,i]).then(([s,o])=>a(s,o)):a(r,i)}:void 0}),eo=async(n,t)=>{let e=n;if(t?.filter){let s=n.map(c=>t.filter(c));if(s.some(c=>c instanceof Promise)){let c=await Promise.all(s);e=n.filter((u,l)=>c[l])}else e=n.filter((c,u)=>s[u])}if(!t?.sortBy)return e;let r=e.map(s=>t.sortBy(s)),a=r.some(s=>s instanceof Promise)?await Promise.all(r):r;return e.map((s,o)=>({track:s,sortValue:a[o]})).sort((s,o)=>{let c=Array.isArray(s.sortValue)?s.sortValue:[s.sortValue],u=Array.isArray(o.sortValue)?o.sortValue:[o.sortValue],l=Math.max(c.length,u.length);for(let m=0;m<l;m++){let d=c[m]??0,f=u[m]??0;if(d!==f)return d-f}return 0}).map(s=>s.track)};fi();var pf=1,Zl=2,Tr=class n extends Ge{constructor(e){super();this._demuxerPromise=null;this._format=null;this._trackBackingsCache=null;this._backingToTrack=new Map;this._disposed=!1;this._nextSourceCacheAge=0;this._sourceRefs=[];this._sourceCache=[];this._sourceCachePromises=[];this._onFormatDetermined=null;if(!e||typeof e!="object")throw new TypeError("options must be an object.");if(!Array.isArray(e.formats)||e.formats.some(r=>!(r instanceof Be)))throw new TypeError("options.formats must be an array of InputFormat.");if(!(e.source instanceof Ie||e.source instanceof yr))throw new TypeError("options.source must be a Source or SourceRef.");if(e.source instanceof Ie&&e.source._disposed)throw new TypeError("options.source must not be a disposed Source.");if(e.initInput!==void 0&&!(e.initInput instanceof n))throw new TypeError("options.initInput, when provided, must be an Input.");e.formatOptions!==void 0&&id(e.formatOptions,"formatOptions"),this._formats=e.formats,this._initInput=e.initInput??null,this._formatOptions=e.formatOptions??{},e.source instanceof Ie?this._rootRef=e.source.ref():this._rootRef=e.source,this._sourceRefs.push(this._rootRef)}get disposed(){return this._disposed}get _rootSource(){return this._rootRef.source}async _getSourceUncached(e){h(this._rootSource instanceof qe);let r=await this._rootSource._resolveRequest(e);return this._emit("source",{source:r.source,request:e,isRoot:e.isRoot}),r}_getSourceCached(e,r=pf){let i=this._sourceCache.find(o=>o.cacheGroup===r&&Rc(o.request,e));if(i)return i.age++,Promise.resolve(i.sourceRef.source.ref());let a=this._sourceCachePromises.find(o=>o.cacheGroup===r&&Rc(o.request,e));if(a)return a.promise.then(o=>o.sourceRef.source.ref());let s=(async()=>{let o=await this._getSourceUncached(e);if(Hr(this._sourceCache,d=>d.cacheGroup===r&&d.sourceRef.source._refCount===1)>=4){let d=pi(this._sourceCache,p=>p.cacheGroup===r&&p.sourceRef.source._refCount===1?p.age:1/0);h(d!==-1);let f=this._sourceCache[d];this._sourceCache.splice(d,1),f.sourceRef.free(),Ho(this._sourceRefs,f.sourceRef)}this._sourceRefs.push(o);let l=this._sourceCachePromises.findIndex(d=>d.request===e);return h(l!==-1),this._sourceCachePromises.splice(l,1),{request:e,sourceRef:o,age:this._nextSourceCacheAge++,cacheGroup:r}})();return this._sourceCachePromises.push({request:e,cacheGroup:r,promise:s}),s.then(o=>{let c=o.sourceRef.source.ref();return this._sourceCache.push(o),c})}_getDemuxer(){return this._demuxerPromise??=(async()=>{this._reader=new kr(this._rootSource),this._emit("source",{source:this._rootSource,request:null,isRoot:!0});for(let e of this._formats)if(await e._canReadInput(this))return this._format=e,this._onFormatDetermined?.(e),e._createDemuxer(this);throw new Qi})()}get source(){return this._rootSource}async getFormat(){return await this._getDemuxer(),h(this._format),this._format}async canRead(){try{return await this._getDemuxer(),!0}catch(e){if(e instanceof Qi)return!1;throw e}}async getFirstTimestamp(e){e??=await this.getTracks();let r=e.filter(a=>a!==null);if(r.length===0)return 0;let i=await Promise.all(r.map(a=>a.getFirstTimestamp()));return Math.min(...i)}async computeDuration(e,r){e??=await this.getTracks();let i=e.filter(s=>s!==null);if(i.length===0)return 0;let a=await Promise.all(i.map(s=>s.computeDuration(r)));return Math.max(...a)}async getDurationFromMetadata(e,r){e??=await this.getTracks();let i=e.filter(o=>o!==null),s=(await Promise.all(i.map(o=>o.getDurationFromMetadata(r)))).filter(o=>o!==null);return s.length===0?null:Math.max(...s)}async getTracks(e){e&&=Ki(e);let i=(await this._getTrackBackings()).map(a=>this._wrapBackingAsTrack(a));return eo(i,e)}async getVideoTracks(e){e&&=Ki(e);let i=(await this.getTracks()).filter(a=>a.isVideoTrack());return eo(i,e)}async getAudioTracks(e){e&&=Ki(e);let i=(await this.getTracks()).filter(a=>a.isAudioTrack());return eo(i,e)}async getPrimaryVideoTrack(e){e&&=Ki(e);let r=Ir(e,{sortBy:async a=>[Er((await a.getDisposition()).default),Er(await a.hasPairableAudioTrack()),Er(!await a.hasOnlyKeyPackets()),ta(await a.getBitrate())]});return(await this.getVideoTracks(r))[0]??null}async getPrimaryAudioTrack(e){e&&=Ki(e);let r=await this.getPrimaryVideoTrack(),i=Ir(e,{sortBy:async s=>[Er(!r||s.canBePairedWith(r)),Er((await s.getDisposition()).default),ta(await s.getBitrate())]});return(await this.getAudioTracks(i))[0]??null}async _getTrackBackings(){let e=await this._getDemuxer();return this._trackBackingsCache??=await e.getTrackBackings()}_wrapBackingAsTrack(e){let r=this._backingToTrack.get(e);if(r)return r;let a=e.getType()==="video"?new Pt(this,e):new Ct(this,e);return this._backingToTrack.set(e,a),a}async getMimeType(){return(await this._getDemuxer()).getMimeType()}async getMetadataTags(){return(await 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a=this._chunks[i],s=r-a.start,o=e.subarray(0,Math.min(this._chunkSize-s,e.byteLength));a.data.set(o,s);let c={start:s,end:s+o.byteLength};if(this._insertSectionIntoChunk(a,c),a.written[0].start===0&&a.written[0].end===this._chunkSize&&(a.shouldFlush=!0),this._chunks.length>Cp){for(let u=0;u<this._chunks.length-1;u++)this._chunks[u].shouldFlush=!0;this._tryToFlushChunks()}o.byteLength<e.byteLength&&this._writeDataIntoChunks(e.subarray(o.byteLength),r+o.byteLength)}_insertSectionIntoChunk(e,r){let i=0,a=e.written.length-1,s=-1;for(;i<=a;){let o=Math.floor(i+(a-i+1)/2);e.written[o].start<=r.start?(i=o+1,s=o):a=o-1}for(e.written.splice(s+1,0,r),(s===-1||e.written[s].end<r.start)&&s++;s<e.written.length-1&&e.written[s].end>=e.written[s+1].start;)e.written[s].end=Math.max(e.written[s].end,e.written[s+1].end),e.written.splice(s+1,1)}_createChunk(e){let i={start:Math.floor(e/this._chunkSize)*this._chunkSize,data:new Uint8Array(this._chunkSize),written:[],shouldFlush:!1};return 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Make sure all packets are provided in Annex B format, as specified in ITU-T-REC-H.264 and ITU-T-REC-H.265.");o=_a(u,4)}this.validateTimestamp(s.track,r.timestamp,r.type==="key");let c=this.createSampleForTrack(s,o,r.timestamp,r.duration,r.type);await this.registerSample(s,c)}finally{a()}}async addEncodedAudioPacket(e,r,i){let a=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,r,i),o=r.data;if(s.info.requiresAdtsStripping){let m=Ve(he.tempFromBytes(o));if(!m)throw new Error("Expected ADTS frame, didn't get one.");let d=m.crcCheck===null?Zt:He;o=o.subarray(d)}this.validateTimestamp(s.track,r.timestamp,r.type==="key");let c=r.timestamp,u=r.duration;if(s.info.requiresPcmTransformation){let d=Ae(s.info.decoderConfig.codec).sampleSize*s.info.numberOfChannels;if(u=o.byteLength/d/s.info.sampleRate,s.info.expectedNextPcmPacketTimestamp!==null){let f=c-s.info.expectedNextPcmPacketTimestamp;if(f<.01)c=s.info.expectedNextPcmPacketTimestamp;else{let p=await this.padWithSilence(s,s.info.expectedNextPcmPacketTimestamp,f);c=s.info.expectedNextPcmPacketTimestamp+p}}s.info.expectedNextPcmPacketTimestamp=c+u}let l=this.createSampleForTrack(s,o,c,u,r.type);await this.registerSample(s,l)}finally{a()}}async padWithSilence(e,r,i){let a=oe(i,e.timescale);if(i=a/e.timescale,a>0){let{sampleSize:s,silentValue:o}=Ae(e.info.decoderConfig.codec),c=a*e.info.numberOfChannels,u=new Uint8Array(s*c).fill(o),l=this.createSampleForTrack(e,new Uint8Array(u.buffer),r,i,"key");await this.registerSample(e,l)}return i}async addSubtitleCue(e,r,i){let a=await this.mutex.acquire();try{let s=this.getSubtitleTrackData(e,i);this.validateTimestamp(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 i=new Set([]);for(let l of e.cueQueue)h(l.timestamp<=r),h(e.lastCueEndTimestamp<=l.timestamp+l.duration),i.add(Math.max(l.timestamp,e.lastCueEndTimestamp)),i.add(l.timestamp+l.duration);let a=[...i].sort((l,m)=>l-m),s=a[0],o=a[1]??s;if(r<o)break;if(e.lastCueEndTimestamp<s){this.auxWriter.seek(0);let l=Gd();this.auxBoxWriter.writeBox(l);let m=this.auxTarget._getSlice(0,this.auxWriter.getPos()),d=this.createSampleForTrack(e,m,e.lastCueEndTimestamp,s-e.lastCueEndTimestamp,"key");await this.registerSample(e,d),e.lastCueEndTimestamp=s}this.auxWriter.seek(0);for(let l=0;l<e.cueQueue.length;l++){let m=e.cueQueue[l];if(m.timestamp>=o)break;$i.lastIndex=0;let d=$i.test(m.text),f=m.timestamp+m.duration,p=e.cueToSourceId.get(m);if(p===void 0&&o<f&&(p=e.nextSourceId++,e.cueToSourceId.set(m,p)),m.notes){let g=Qd(m.notes);this.auxBoxWriter.writeBox(g)}let b=Kd(m.text,d?s:null,m.identifier??null,m.settings??null,p??null);this.auxBoxWriter.writeBox(b),f===o&&e.cueQueue.splice(l--,1)}let c=this.auxTarget._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,i,a,s){return{timestamp:i,decodeTimestamp:i,duration:a,data:r,size:r.byteLength,type:s,timescaleUnitsToNextSample:oe(a,e.timescale)}}processTimestamps(e,r){if(e.timestampProcessingQueue.length===0)return;if(e.type==="audio"&&e.info.requiresPcmTransformation){this.isFragmented||(e.startTimestampOffset??=e.timestampProcessingQueue[0].timestamp);let a=0;for(let s=0;s<e.timestampProcessingQueue.length;s++){let o=e.timestampProcessingQueue[s],c=oe(o.duration,e.timescale);a+=c}if(e.timeToSampleTable.length===0)e.timeToSampleTable.push({sampleCount:a,sampleDelta:1});else{let s=X(e.timeToSampleTable);s.sampleCount+=a}e.timestampProcessingQueue.length=0;return}let i=e.timestampProcessingQueue.map(a=>a.timestamp).sort((a,s)=>a-s);this.isFragmented||(e.startTimestampOffset??=i[0]);for(let a=0;a<e.timestampProcessingQueue.length;a++){let s=e.timestampProcessingQueue[a];s.decodeTimestamp=i[a];let o=oe(s.timestamp-s.decodeTimestamp,e.timescale),c=oe(s.duration,e.timescale);if(e.lastTimescaleUnits!==null){h(e.lastSample);let u=oe(s.decodeTimestamp,e.timescale,!1),l=Math.round(u-e.lastTimescaleUnits);if(h(l>=0),e.lastTimescaleUnits+=l,e.lastSample.timescaleUnitsToNextSample=l,!this.isFragmented){let m=X(e.timeToSampleTable);if(h(m),m.sampleCount===1){m.sampleDelta=l;let f=e.timeToSampleTable[e.timeToSampleTable.length-2];f&&f.sampleDelta===l&&(f.sampleCount++,e.timeToSampleTable.pop(),m=f)}else m.sampleDelta!==l&&(m.sampleCount--,e.timeToSampleTable.push(m={sampleCount:1,sampleDelta:l}));m.sampleDelta===c?m.sampleCount++:e.timeToSampleTable.push({sampleCount:1,sampleDelta:c});let d=X(e.compositionTimeOffsetTable);h(d),d.sampleCompositionTimeOffset===o?d.sampleCount++:e.compositionTimeOffsetTable.push({sampleCount:1,sampleCompositionTimeOffset:o})}}else e.lastTimescaleUnits=oe(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,h(e.lastSample),h(e.lastTimescaleUnits!==null),r!==void 0&&e.lastSample.timescaleUnitsToNextSample===0){h(r.type==="key");let a=oe(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(h(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 i=!1;if(!e.currentChunk)i=!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.closed});a>=this.minimumFragmentDuration&&s&&r.timestamp>this.maxWrittenTimestamp&&(i=!0,await this.finalizeFragment())}else i=a>=.5}i&&(e.currentChunk&&await this.finalizeCurrentChunk(e),e.currentChunk={startTimestamp:r.timestamp,samples:[],offset:null,moofOffset:null}),h(e.currentChunk),e.currentChunk.samples.push(r),this.isFragmented&&(this.maxWrittenTimestamp=Math.max(this.maxWrittenTimestamp,r.timestamp),this.maxWrittenEndTimestamp=Math.max(this.maxWrittenEndTimestamp,r.timestamp+r.duration),this.minWrittenTimestamp=Math.min(this.minWrittenTimestamp,r.timestamp))}async finalizeCurrentChunk(e){if(h(!this.isFragmented),h(this.writer),!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((i,a)=>i+oe(a.duration,e.timescale),0)),(e.compactlyCodedChunkTable.length===0||X(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 i of e.currentChunk.samples)h(i.data),this.writer.write(i.data),i.data=null;await this.writer.flush()}async interleaveSamples(e=!1){if(h(this.isFragmented),!(!e&&!this.allTracksAreKnown()))e:for(;;){let r=null,i=1/0;for(let s of this.trackDatas){if(!e&&s.sampleQueue.length===0&&!s.closed)break e;s.sampleQueue.length>0&&s.sampleQueue[0].timestamp<i&&(r=s,i=s.sampleQueue[0].timestamp)}if(!r)break;let a=r.sampleQueue.shift();await this.addSampleToTrack(r,a)}}async finalizeFragment(e=!this.isCmaf){h(this.isFragmented);let r=this.nextFragmentNumber++;if(r===1){let p=this.initBoxWriter??this.boxWriter;h(p),this.format._options.onMoov&&p.writer.startTrackingWrites();let b=Yi(this);if(p.writeBox(b),this.format._options.onMoov){let{data:g,start:y}=p.writer.stopTrackingWrites();this.format._options.onMoov(g,y)}if(this.isCmaf){h(this.initWriter),await this.initWriter.flush(),await this.initWriter.finalize(),this.writer=await this.output._getRootWriter(!0),this.boxWriter=new ti(this.writer);let g=this.boxWriter.measureBox(ru()),y=this.boxWriter.measureBox(iu(this,0));this.segmentHeaderSize=g+y,this.writer.seek(this.segmentHeaderSize)}}h(this.writer),h(this.boxWriter);let i=this.trackDatas.filter(p=>p.currentChunk),a=au(r,i),s=this.writer.getPos(),o=s+this.boxWriter.measureBox(a),c=o+ot,u=1/0;for(let p of i){p.currentChunk.offset=c,p.currentChunk.moofOffset=s;for(let b of p.currentChunk.samples)c+=b.size;u=Math.min(u,p.currentChunk.startTimestamp)}let l=c-o,m=l>=2**32;if(m)for(let p of i)p.currentChunk.offset+=Gt-ot;this.format._options.onMoof&&this.writer.startTrackingWrites();let d=au(r,i);if(this.boxWriter.writeBox(d),this.format._options.onMoof){let{data:p,start:b}=this.writer.stopTrackingWrites();this.format._options.onMoof(p,b,u)}h(this.writer.getPos()===o),this.format._options.onMdat&&this.writer.startTrackingWrites();let f=ia(m);f.size=l,this.boxWriter.writeBox(f),this.writer.seek(o+(m?Gt:ot));for(let p of i)for(let b of p.currentChunk.samples)this.writer.write(b.data),b.data=null;if(this.format._options.onMdat){let{data:p,start:b}=this.writer.stopTrackingWrites();this.format._options.onMdat(p,b)}for(let p of i)p.finalizedChunks.push(p.currentChunk),this.finalizedChunks.push(p.currentChunk),p.currentChunk=null;e&&await this.writer.flush()}async registerSampleFastStartReserve(e,r){if(h(this.writer),h(this.boxWriter),this.allTracksAreKnown()){if(!this.mdat){let i=Yi(this),s=this.boxWriter.measureBox(i)+this.computeSampleTableSizeUpperBound()+4096;h(this.ftypSize!==null),this.writer.seek(this.ftypSize+s),this.format._options.onMdat&&this.writer.startTrackingWrites(),this.mdat=ia(!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(){h(this.fastStart==="reserve");let e=0;for(let r of this.trackDatas){let i=r.track.metadata.maximumPacketCount;h(i!==void 0),e+=8*Math.ceil(2/3*i),e+=4*i,e+=8*Math.ceil(2/3*i),e+=12*Math.ceil(2/3*i),e+=4*i,e+=8*i}return e}async onTrackClose(e){let r=await this.mutex.acquire(),i=this.trackDatas.find(a=>a.track===e);i&&(i.closed=!0,i.type==="subtitle"&&e.source._codec==="webvtt"&&await this.processWebVTTCues(i,1/0),this.processTimestamps(i)),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.closed=!0,r.type==="subtitle"&&r.track.source._codec==="webvtt"&&await this.processWebVTTCues(r,1/0),this.processTimestamps(r);if(this.isFragmented)await this.interleaveSamples(!0),await this.finalizeFragment(!1);else for(let r of this.trackDatas){await this.finalizeCurrentChunk(r),h(r.startTimestampOffset!==null);for(let i=0;i<r.samples.length;i++){let a=r.samples[i];a.timestamp-=r.startTimestampOffset,a.decodeTimestamp-=r.startTimestampOffset}}if(h(this.writer),h(this.boxWriter),this.fastStart==="in-memory"){this.mdat=ia(!1);let r;for(let a=0;a<2;a++){let s=Yi(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:l}of u.samples)h(l),c+=l.byteLength,r+=l.byteLength}if(c<2**32)break;r>=2**32&&(this.mdat.largeSize=!0)}this.format._options.onMoov&&this.writer.startTrackingWrites();let i=Yi(this);if(this.boxWriter.writeBox(i),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)h(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)if(this.isCmaf){let r=this.segmentHeaderSize!==null?this.writer.getPos()-this.segmentHeaderSize:0;this.writer.seek(0),this.boxWriter.writeBox(ru()),this.boxWriter.writeBox(iu(this,r))}else{let r=this.writer.getPos(),i=qd(this.trackDatas);this.boxWriter.writeBox(i);let a=this.writer.getPos()-r;this.writer.seek(this.writer.getPos()-4),this.boxWriter.writeU32(a)}else{h(this.mdat);let r=this.boxWriter.offsets.get(this.mdat);h(r!==void 0);let i=this.writer.getPos()-r;if(this.mdat.size=i,this.mdat.largeSize=i>=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=Yi(this);if(this.fastStart==="reserve"){h(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(Wd(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 Ep=-(2**15),vp=2**15-1,em="Mediabunny",tm=6,rm=5,_p={video:1,audio:2,subtitle:17},lo=class extends ye{constructor(e,r){super(e);this.trackDatas=[];this.allTracksKnown=Z();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.startTimestamp=1/0;this.endTimestamp=-1/0;this.format=r}async start(){let e=await this.mutex.acquire();this.writer=await this.output._getRootWriter(!!this.format._options.appendOnly),this.ebmlWriter=new Xa(this.writer),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 ni?"webm":"matroska"},{id:17031,data:2},{id:17029,data:2}]};if(this.ebmlWriter.writeEBML(e),this.format._options.onEbmlHeader){let{data:r,start:i}=this.writer.stopTrackingWrites();this.format._options.onEbmlHeader(r,i)}}maybeCreateSeekHead(e){if(this.format._options.appendOnly)return;let r=new Uint8Array([28,83,187,107]),i=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:i},{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 Ci(0)};this.segmentDuration=e;let r={id:357149030,data:[{id:2807729,data:1e6},{id:19840,data:em},{id:22337,data:em},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 i=Me[r.track.source._codec];h(i);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=j(s),c=fr(o);a=Math.round(1e9*(c.preSkip/at))}}e.data.push({id:174,data:[{id:215,data:r.track.id},{id:29637,data:r.track.id},{id:131,data:_p[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??J},{id:134,data:i},{id:22186,data:0},{id:22203,data:a},r.track.metadata.name!==void 0?{id:21358,data:new dt(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:i}=e.track.metadata,a=[e.info.decoderConfig.description?{id:25506,data:j(e.info.decoderConfig.description)}:null,r?{id:2352003,data:1e9/r}:null],s=i?Ze(-i):0,o=!!e.info.aspectRatio&&e.info.aspectRatio.num*e.info.height!==e.info.aspectRatio.den*e.info.width,c=e.info.decoderConfig.colorSpace,u={id:224,data:[{id:176,data:e.info.width},{id:186,data:e.info.height},o?{id:21680,data:e.info.aspectRatio.num}:null,o?{id:21690,data:e.info.aspectRatio.den}:null,o?{id:21682,data:3}:null,e.info.alphaMode?{id:21440,data:1}:null,pa(c)?{id:21936,data:[{id:21937,data:rt[c.matrix]},{id:21946,data:tt[c.transfer]},{id:21947,data:et[c.primaries]},{id:21945,data:c.fullRange?2:1}]}:null,s?{id:30320,data:[{id:30321,data:0},{id:30325,data:new Pi((s+180)%360-180)}]}:null]};return a.push(u),a}audioSpecificTrackInfo(e){let r=ee.includes(e.track.source._codec)?Ae(e.track.source._codec):null;return[e.info.decoderConfig.description?{id:25506,data:j(e.info.decoderConfig.description)}:null,{id:225,data:[{id:181,data:new Pi(e.info.sampleRate)},{id:159,data:e.info.numberOfChannels},r?{id:25188,data:8*r.sampleSize}:null]}]}subtitleSpecificTrackInfo(e){return[{id:25506,data:$.encode(e.info.config.description)}]}maybeCreateTags(){let e=[],r=(s,o)=>{e.push({id:26568,data:[{id:17827,data:new dt(s)},typeof o=="string"?{id:17543,data:new dt(o)}:{id:17541,data:o}]})},i=this.output._metadataTags,a=new Set;for(let{key:s,value:o}of it(i))switch(s){case"title":r("TITLE",o),a.add("TITLE");break;case"description":r("DESCRIPTION",o),a.add("DESCRIPTION");break;case"artist":r("ARTIST",o),a.add("ARTIST");break;case"album":r("ALBUM",o),a.add("ALBUM");break;case"albumArtist":r("ALBUM_ARTIST",o),a.add("ALBUM_ARTIST");break;case"genre":r("GENRE",o),a.add("GENRE");break;case"comment":r("COMMENT",o),a.add("COMMENT");break;case"lyrics":r("LYRICS",o),a.add("LYRICS");break;case"date":r("DATE",o.toISOString().slice(0,10)),a.add("DATE");break;case"trackNumber":{let c=i.tracksTotal!==void 0?`${o}/${i.tracksTotal}`:o.toString();r("PART_NUMBER",c),a.add("PART_NUMBER")}break;case"discNumber":{let c=i.discsTotal!==void 0?`${o}/${i.discsTotal}`:o.toString();r("DISC",c),a.add("DISC")}break;case"tracksTotal":case"discsTotal":break;case"images":case"raw":break;default:ne(s)}if(i.raw)for(let s in i.raw){let o=i.raw[s];o==null||a.has(s)||(typeof o=="string"||o instanceof Uint8Array)&&r(s,o)}e.length!==0&&(this.tagsElement={id:307544935,data:[{id:29555,data:[{id:25536,data:[{id:26826,data:50},{id:25546,data:"MOVIE"}]},...e]}]})}maybeCreateAttachments(){let e=this.output._metadataTags,r=[],i=new Set,a=e.images??[];for(let s of a){let o=s.name;o===void 0&&(o=(s.kind==="coverFront"?"cover":s.kind==="coverBack"?"back":"image")+(Du(s.mimeType)??""));let c;for(;;){c=0n;for(let u=0;u<8;u++)c<<=8n,c|=BigInt(Math.floor(Math.random()*256));if(c!==0n&&!i.has(c))break}i.add(c),r.push({id:24999,data:[s.description!==void 0?{id:18046,data:new dt(s.description)}:null,{id:18030,data:new dt(o)},{id:18016,data:s.mimeType},{id:18012,data:s.data},{id:18094,data:c}]})}for(let[s,o]of Object.entries(e.raw??{}))!(o instanceof Lt)||!/^\d+$/.test(s)||a.find(u=>u.mimeType===o.mimeType&&ba(u.data,o.data))||r.push({id:24999,data:[o.description!==void 0?{id:18046,data:new dt(o.description)}:null,{id:18030,data:new dt(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:tm,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:i}=this.writer.stopTrackingWrites();this.format._options.onSegmentHeader(r,i)}}createCues(){this.cues={id:475249515,data:[]}}get segmentDataOffset(){return h(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 Ja({isWebM:this.format instanceof ni,hasVideo:this.trackDatas.some(r=>r.type==="video"),hasAudio:this.trackDatas.some(r=>r.type==="audio"),codecStrings:e})}getVideoTrackData(e,r,i){let a=this.trackDatas.find(l=>l.track===e);if(a)return a;cr(i),h(i),h(i.decoderConfig),h(i.decoderConfig.codedWidth!==void 0),h(i.decoderConfig.codedHeight!==void 0);let s=i.decoderConfig.displayAspectWidth,o=i.decoderConfig.displayAspectHeight,c=s===void 0||o===void 0?null:zt({num:s,den:o}),u={track:e,type:"video",info:{width:i.decoderConfig.codedWidth,height:i.decoderConfig.codedHeight,aspectRatio:c,decoderConfig:i.decoderConfig,alphaMode:!!r.sideData.alpha},chunkQueue:[],lastWrittenMsTimestamp:null,closed:!1};return e.source._codec==="vp9"?u.info.decoderConfig={...u.info.decoderConfig,description:new Uint8Array(ju(u.info.decoderConfig.codec))}:e.source._codec==="av1"&&(u.info.decoderConfig={...u.info.decoderConfig,description:new Uint8Array(Sa(u.info.decoderConfig.codec))}),this.trackDatas.push(u),this.trackDatas.sort((l,m)=>l.track.id-m.track.id),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),u}getAudioTrackData(e,r,i){let a=this.trackDatas.find(u=>u.track===e);if(a)return a;_e(i),h(i),h(i.decoderConfig);let s={...i.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 l=Ke[u.samplingFrequencyIndex],m=St[u.channelConfiguration];if(l===void 0||m===void 0)throw new Error("Invalid ADTS frame header.");s.description=hi({objectType:u.objectType,sampleRate:l,numberOfChannels:m}),o=!0}let c={track:e,type:"audio",info:{numberOfChannels:i.decoderConfig.numberOfChannels,sampleRate:i.decoderConfig.sampleRate,decoderConfig:s,requiresAdtsStripping:o},chunkQueue:[],lastWrittenMsTimestamp:null,closed:!1};return this.trackDatas.push(c),this.trackDatas.sort((u,l)=>u.track.id-l.track.id),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),c}getSubtitleTrackData(e,r){let i=this.trackDatas.find(s=>s.track===e);if(i)return i;xa(r),h(r),h(r.config);let a={track:e,type:"subtitle",info:{config:r.config},chunkQueue:[],lastWrittenMsTimestamp:null,closed:!1};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,i){let a=await this.mutex.acquire();try{let s=this.getVideoTrackData(e,r,i),o=r.type==="key";this.validateTimestamp(s.track,r.timestamp,o);let c=r.timestamp,u=r.duration;e.metadata.frameRate!==void 0&&(c=Tt(c,e.metadata.frameRate),u=Tt(u,e.metadata.frameRate));let l=s.info.alphaMode?r.sideData.alpha??null:null,m=this.createInternalChunk(r.data,c,u,r.type,l);e.source._codec==="vp9"&&this.fixVP9ColorSpace(s,m),s.chunkQueue.push(m),await this.interleaveChunks()}finally{a()}}async addEncodedAudioPacket(e,r,i){let a=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,r,i),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?Zt:He;o=o.subarray(m)}let c=r.type==="key";this.validateTimestamp(s.track,r.timestamp,c);let u=this.createInternalChunk(o,r.timestamp,r.duration,r.type);s.chunkQueue.push(u),await this.interleaveChunks()}finally{a()}}async addSubtitleCue(e,r,i){let a=await this.mutex.acquire();try{let s=this.getSubtitleTrackData(e,i);this.validateTimestamp(s.track,r.timestamp,!0);let o=r.text,c=Math.round(r.timestamp*1e3);$i.lastIndex=0,o=o.replace($i,d=>{let p=no(d.slice(1,-1))-c;return`<${ao(p)}>`});let u=$.encode(o),l=`${r.settings??""}
${r.identifier??""}
${r.notes??""}`,m=this.createInternalChunk(u,r.timestamp,r.duration,"key",l.trim()?$.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,i=1/0;for(let s of this.trackDatas){if(!e&&s.chunkQueue.length===0&&!s.closed)break e;s.chunkQueue.length>0&&s.chunkQueue[0].timestamp<i&&(r=s,i=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 i=new W(r.data);i.skipBits(2);let a=i.readBits(1),o=(i.readBits(1)<<1)+a;if(o===3&&i.skipBits(1),i.readBits(1)||i.readBits(1)!==0||(i.skipBits(2),i.readBits(24)!==4817730))return;o>=2&&i.skipBits(1);let m={rgb:7,bt709:2,bt470bg:1,smpte170m:3}[e.info.decoderConfig.colorSpace.matrix];Au(r.data,i.pos,i.pos+3,m)}createInternalChunk(e,r,i,a,s=null){return{data:e,type:a,timestamp:r,duration:i,additions:s}}writeBlock(e,r){this.segment||this.createSegment();let i=Math.round(1e3*r.timestamp),a=this.trackDatas.every(m=>{if(e===m)return r.type==="key";let d=m.chunkQueue[0];return d?d.type==="key":m.closed}),s=!1;if(!this.currentCluster)s=!0;else{h(this.currentClusterStartMsTimestamp!==null),h(this.currentClusterMaxMsTimestamp!==null);let m=i-this.currentClusterStartMsTimestamp;s=a&&i>this.currentClusterMaxMsTimestamp&&m>=1e3*(this.format._options.minimumClusterDuration??1)||m>vp}s&&this.createNewCluster(i);let o=i-this.currentClusterStartMsTimestamp;if(o<Ep)return;let c=new Uint8Array(4),u=new DataView(c.buffer);u.setUint8(0,128|e.track.id),u.setInt16(1,o,!1);let l=Math.round(1e3*r.duration);if(r.additions){let m={id:160,data:[{id:161,data:[c,r.data]},r.type==="delta"?{id:251,data:new wn(e.lastWrittenMsTimestamp-i)}:null,r.additions?{id:30113,data:[{id:166,data:[{id:238,data:1},{id:165,data:r.additions}]}]}:null,l>0?{id:155,data:l}:null]};this.ebmlWriter.writeEBML(m)}else{u.setUint8(3,+(r.type==="key")<<7);let m={id:163,data:[c,r.data]};this.ebmlWriter.writeEBML(m)}this.startTimestamp=Math.min(this.startTimestamp,i),this.endTimestamp=Math.max(this.endTimestamp,i+l),e.lastWrittenMsTimestamp=i,this.trackDatasInCurrentCluster.has(e)||this.trackDatasInCurrentCluster.set(e,{firstMsTimestamp:i}),this.currentClusterMaxMsTimestamp=Math.max(this.currentClusterMaxMsTimestamp,i)}createNewCluster(e){this.currentCluster&&this.finalizeCurrentCluster(),this.format._options.onCluster&&this.writer.startTrackingWrites(),this.currentCluster={id:524531317,size:this.format._options.appendOnly?-1:rm,data:[{id:231,data:e}]},this.ebmlWriter.writeEBML(this.currentCluster),this.currentClusterStartMsTimestamp=e,this.currentClusterMaxMsTimestamp=e,this.trackDatasInCurrentCluster.clear()}finalizeCurrentCluster(){if(h(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,rm),this.writer.seek(s)}if(this.format._options.onCluster){h(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 i=[...r.entries()].sort((a,s)=>a[0]-s[0]);for(let[a,s]of i)h(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(e){let r=await this.mutex.acquire(),i=this.trackDatas.find(a=>a.track===e);i&&(i.closed=!0),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),await this.interleaveChunks(),r()}async finalize(){let e=await this.mutex.acquire();this.allTracksKnown.resolve();for(let r of this.trackDatas)r.closed=!0;if(this.segment||this.createSegment(),await this.interleaveChunks(!0),this.currentCluster&&this.finalizeCurrentCluster(),h(this.cues),this.ebmlWriter.writeEBML(this.cues),!this.format._options.appendOnly){let r=this.writer.getPos()-this.segmentDataOffset;this.writer.seek(this.ebmlWriter.offsets.get(this.segment)+4),this.ebmlWriter.writeVarInt(r,tm);let i=this.startTimestamp===1/0?0:this.endTimestamp-this.startTimestamp;this.segmentDuration.data=new Ci(i),this.writer.seek(this.ebmlWriter.offsets.get(this.segmentDuration)),this.ebmlWriter.writeEBML(this.segmentDuration),h(this.seekHead),this.writer.seek(this.ebmlWriter.offsets.get(this.seekHead)),this.maybeCreateSeekHead(!0),this.ebmlWriter.writeEBML(this.seekHead)}e()}};var mo=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,i=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 g=0;g<16;g++){let y=Pa[u+g];if(Ca(a,t.layer,1e3*y,t.sampleRate,s)>=o){c=g;break}}if(c===-1)throw new Error("No suitable bitrate found.");let l=c<<4|t.frequencyIndex<<2|s<<1,m=t.channel<<6|t.modeExtension<<4|t.copyright<<3|t.original<<2|t.emphasis;this.helper[0]=r,this.helper[1]=i,this.helper[2]=l,this.helper[3]=m,this.writer.write(this.helper.subarray(0,4));let d=lr(t.mpegVersionId,t.channel);this.writer.seek(e+d),this.writeU32(ur);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 p=Pa[u+c],b=Ca(a,t.layer,1e3*p,t.sampleRate,s);this.writer.seek(e+b)}};var fo=class extends ye{constructor(e,r){super(e);this.xingFrameData=null;this.frameCount=0;this.framePositions=[];this.xingFramePos=null;this.format=r}async start(){let e=await this.mutex.acquire();this.writer=await this.output._getRootWriter(this.format._options.xingHeader===!1),this.mp3Writer=new mo(this.writer),Wt(this.output._metadataTags)||new vr(this.writer).writeId3V2Tag(this.output._metadataTags),e()}async getMimeType(){return"audio/mpeg"}async addEncodedVideoPacket(){throw new Error("MP3 does not support video.")}async addEncodedAudioPacket(e,r){let i=await this.mutex.acquire();try{let a=this.format._options.xingHeader!==!1;if(!this.xingFrameData&&a){let s=V(r.data);if(s.byteLength<4)throw new Error("Invalid MP3 header in sample.");let o=s.getUint32(0,!1),c=Gr(o,null).header;if(!c)throw new Error("Invalid MP3 header in sample.");let u=lr(c.mpegVersionId,c.channel);if(s.byteLength>=u+4){let l=s.getUint32(u,!1);if(l===ur||l===yi)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.validateTimestamp(e,r.timestamp,r.type==="key"),a&&this.framePositions.push(this.writer.getPos()),this.writer.write(r.data),this.frameCount++,await this.writer.flush()}finally{i()}}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(),i=this.writer.getPos()-this.xingFramePos;this.writer.seek(this.xingFramePos);let a=new Uint8Array(100);for(let s=0;s<100;s++){let o=Math.floor(this.framePositions.length*(s/100)),c=this.framePositions[o]-this.xingFramePos;a[s]=256*(c/i)}if(this.xingFrameData.frameCount=this.frameCount,this.xingFrameData.fileSize=i,this.xingFrameData.toc=a,this.format._options.onXingFrame&&this.writer.startTrackingWrites(),this.mp3Writer.writeXingFrame(this.xingFrameData),this.format._options.onXingFrame){let{data:s,start:o}=this.writer.stopTrackingWrites();this.format._options.onXingFrame(s,o)}e()}};var Rp=8192,po=class extends ye{constructor(e,r){super(e);this.trackDatas=[];this.bosPagesWritten=!1;this.allTracksKnown=Z();this.pageBytes=new Uint8Array(ss);this.pageView=new DataView(this.pageBytes.buffer);this.format=r}async start(){let e=await this.mutex.acquire();this.writer=await this.output._getRootWriter(!0),e()}async getMimeType(){return await this.allTracksKnown.promise,as({codecStrings:this.trackDatas.map(e=>e.codecInfo.codec)})}addEncodedVideoPacket(){throw new Error("Video tracks are not supported.")}getTrackData(e,r){let i=this.trackDatas.find(o=>o.track===e);if(i)return i;let a;do a=Math.floor(2**32*Math.random());while(this.trackDatas.some(o=>o.serialNumber===a));h(e.source._codec==="vorbis"||e.source._codec==="opus"),_e(r),h(r),h(r.decoderConfig);let s={track:e,serialNumber:a,internalSampleRate:e.source._codec==="opus"?at: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,closed:!1};return this.queueHeaderPackets(s,r),this.trackDatas.push(s),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),s}queueHeaderPackets(e,r){if(h(r.decoderConfig),e.track.source._codec==="vorbis"){h(r.decoderConfig.description);let i=j(r.decoderConfig.description);if(i[0]!==2)throw new TypeError("First byte of Vorbis decoder description must be 2.");let a=1,s=()=>{let g=0;for(;;){let y=i[a++];if(y===void 0)throw new TypeError("Vorbis decoder description is too short.");if(g+=y,y<255)return g}},o=s(),c=s();if(i.length-a<=0)throw new TypeError("Vorbis decoder description is too short.");let l=i.subarray(a,a+=o);a+=c;let m=i.subarray(a),d=new Uint8Array(7);d[0]=3,d[1]=118,d[2]=111,d[3]=114,d[4]=98,d[5]=105,d[6]=115;let f=hn(d,this.output._metadataTags,!0);e.packetQueue.push({data:l,timestampInSamples:0,durationInSamples:0,forcePageFlush:!0},{data:f,timestampInSamples:0,durationInSamples:0,forcePageFlush:!1},{data:m,timestampInSamples:0,durationInSamples:0,forcePageFlush:!0});let b=V(l).getUint8(28);e.codecInfo.vorbisInfo={blocksizes:[1<<(b&15),1<<(b>>4)],modeBlockflags:Ba(m).modeBlockflags}}else if(e.track.source._codec==="opus"){if(!r.decoderConfig.description)throw new TypeError("For Ogg, Opus decoder description is required.");let i=j(r.decoderConfig.description),a=new Uint8Array(8),s=V(a);s.setUint32(0,1332770163,!1),s.setUint32(4,1415669619,!1);let o=hn(a,this.output._metadataTags,!0);e.packetQueue.push({data:i,timestampInSamples:0,durationInSamples:0,forcePageFlush:!0},{data:o,timestampInSamples:0,durationInSamples:0,forcePageFlush:!0}),e.codecInfo.opusInfo={preSkip:fr(i).preSkip}}}async addEncodedAudioPacket(e,r,i){let a=await this.mutex.acquire();try{let s=this.getTrackData(e,i);this.validateTimestamp(s.track,r.timestamp,r.type==="key");let o=s.currentTimestampInSamples,{durationInSamples:c,vorbisBlockSize:u}=ns(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 i=r.packetQueue.shift();if(this.writePacket(r,i,!1),i.forcePageFlush)break}this.bosPagesWritten=!0}e:for(;;){let r=null,i=1/0;for(let o of this.trackDatas){if(!e&&o.packetQueue.length<=1&&!o.closed)break e;o.packetQueue.length>0&&o.packetQueue[0].timestampInSamples<i&&(r=o,i=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,i){let a=r.timestampInSamples+r.durationInSamples;if(this.format._options.maximumPageDuration!==void 0){let l=this.format._options.maximumPageDuration*e.internalSampleRate;e.currentLacingValues.length>0&&a-e.currentPageStartTimestampInSamples>l&&this.writePage(e,!1)}let s=r.data.length,o=0,c=0;for(;;){e.currentLacingValues.length===0&&o>0&&(e.currentPageStartsWithFreshPacket=!1);let l=Math.min(255,s);e.currentLacingValues.push(l),e.currentPageSize++,c+=l;let m=s<255;if(e.currentLacingValues.length===255){let d=r.data.subarray(o,c);if(o=c,e.currentPageData.push(d),e.currentPageSize+=d.length,this.writePage(e,i&&m),m)return}if(m)break;s-=255}let u=r.data.subarray(o);e.currentPageData.push(u),e.currentPageSize+=u.length,e.currentGranulePosition=a,(e.currentPageSize>=Rp||r.forcePageFlush)&&this.writePage(e,i)}writePage(e,r){this.pageView.setUint32(0,Pn,!0),this.pageView.setUint8(4,0);let i=0;e.currentPageStartsWithFreshPacket||(i|=1),e.pagesWritten===0&&(i|=2),r&&(i|=4),this.pageView.setUint8(5,i);let a=e.currentLacingValues.every(u=>u===255)?-1:e.currentGranulePosition;_u(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=is(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:l}=this.writer.stopTrackingWrites();this.format._options.onPage(u,l,e.track.source)}}async onTrackClose(e){let r=await this.mutex.acquire(),i=this.trackDatas.find(a=>a.track===e);i&&(i.closed=!0),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),await this.interleavePages(),r()}async finalize(){let e=await this.mutex.acquire();this.allTracksKnown.resolve();for(let r of this.trackDatas)r.closed=!0;await this.interleavePages(!0);for(let r of this.trackDatas)r.currentLacingValues.length>0&&this.writePage(r,!0);e()}};var Fp=0,om=4096,im=256,Mp=224,nm=192,am=new Uint8Array([9,240]),sm=new Uint8Array([70,1]),ho=class extends ye{constructor(e,r){super(e);this.trackDatas=[];this.tablesWritten=!1;this.continuityCounters=new Map;this.packetBuffer=new Uint8Array(188);this.packetView=V(this.packetBuffer);this.allTracksKnown=Z();this.videoTrackIndex=0;this.audioTrackIndex=0;this.adaptationFieldBuffer=new Uint8Array(184);this.payloadBuffer=new Uint8Array(184);this.format=r}async start(){let e=await this.mutex.acquire();this.writer=await this.output._getRootWriter(!0),e()}async getMimeType(){return await this.allTracksKnown.promise,ps(this.trackDatas.map(e=>e.codecString))}getVideoTrackData(e,r){let i=this.trackDatas.find(l=>l.track===e);if(i)return i;cr(r),h(r?.decoderConfig);let a=e.source._codec;h(a==="avc"||a==="hevc");let s=a==="avc"?27:36,o=im+this.trackDatas.length,c=Mp+this.videoTrackIndex++,u={track:e,pid:o,streamType:s,streamId:c,codecString:r.decoderConfig.codec,timestampProcessingQueue:[],packetQueue:[],inputIsAnnexB:null,inputIsAdts:null,avcDecoderConfig:null,hevcDecoderConfig:null,adtsHeader:null,adtsHeaderBitstream:null,firstPacketWritten:!1,closed:!1};return this.trackDatas.push(u),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),u}getAudioTrackData(e,r){let i=this.trackDatas.find(l=>l.track===e);if(i)return i;_e(r),h(r?.decoderConfig);let a=e.source._codec;h(a==="aac"||a==="mp3"||a==="ac3"||a==="eac3");let s,o;switch(a){case"aac":s=15,o=nm+this.audioTrackIndex++;break;case"mp3":s=3,o=nm+this.audioTrackIndex++;break;case"ac3":s=129,o=189;break;case"eac3":s=135,o=189;break}let c=im+this.trackDatas.length,u={track:e,pid:c,streamType:s,streamId:o,codecString:r.decoderConfig.codec,timestampProcessingQueue:[],packetQueue:[],inputIsAnnexB:null,inputIsAdts:null,avcDecoderConfig:null,hevcDecoderConfig:null,adtsHeader:null,adtsHeaderBitstream:null,firstPacketWritten:!1,closed:!1};return this.trackDatas.push(u),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),u}async addEncodedVideoPacket(e,r,i){let a=await this.mutex.acquire();try{let s=this.getVideoTrackData(e,i);this.validateTimestamp(s.track,r.timestamp,r.type==="key");let o=this.prepareVideoPacket(s,r,i);r.type==="key"&&await this.flushTimestampQueue(s),s.timestampProcessingQueue.push({data:o,presentationTimestamp:r.timestamp,decodeTimestamp:null,isKeyframe:r.type==="key"})}finally{a()}}async addEncodedAudioPacket(e,r,i){let a=await this.mutex.acquire();try{let s=this.getAudioTrackData(e,i);this.validateTimestamp(s.track,r.timestamp,r.type==="key");let o=this.prepareAudioPacket(s,r,i);r.type==="key"&&await this.flushTimestampQueue(s),s.timestampProcessingQueue.push({data:o,presentationTimestamp:r.timestamp,decodeTimestamp:null,isKeyframe:r.type==="key"})}finally{a()}}async addSubtitleCue(){throw new Error("MPEG-TS does not support subtitles.")}prepareVideoPacket(e,r,i){let a=e.track.source._codec;if(e.inputIsAnnexB===null){let s=i?.decoderConfig?.description;if(e.inputIsAnnexB=!s,!e.inputIsAnnexB){let o=j(s);a==="avc"?e.avcDecoderConfig=Ra(o):e.hevcDecoderConfig=cl(o)}}return e.inputIsAnnexB?this.prepareAnnexBVideoPacket(r.data,a):this.prepareLengthPrefixedVideoPacket(e,r,a)}prepareAnnexBVideoPacket(e,r){let i=[];for(let s of mr(e)){let o=e.subarray(s.offset,s.offset+s.length);(r==="avc"?qt(o[0])===9:st(o[0])===35)||i.push(o)}let a=r==="avc"?am:sm;return i.unshift(a),mn(i)}prepareLengthPrefixedVideoPacket(e,r,i){let a=r.data,s=i==="avc"?e.avcDecoderConfig.lengthSizeMinusOne+1:e.hevcDecoderConfig.lengthSizeMinusOne+1,o=[];for(let u of Ea(a,s)){let l=a.subarray(u.offset,u.offset+u.length);(i==="avc"?qt(l[0])===9:st(l[0])===35)||o.push(l)}if(r.type==="key")if(i==="avc"){let u=e.avcDecoderConfig;for(let l of u.pictureParameterSets)o.unshift(l);for(let l of u.sequenceParameterSets)o.unshift(l)}else{let u=e.hevcDecoderConfig;for(let l of u.arrays)if(l.nalUnitType===34)for(let m of l.nalUnits)o.unshift(m);for(let l of u.arrays)if(l.nalUnitType===33)for(let m of l.nalUnits)o.unshift(m);for(let l of u.arrays)if(l.nalUnitType===32)for(let m of l.nalUnits)o.unshift(m)}let c=i==="avc"?am:sm;return o.unshift(c),mn(o)}prepareAudioPacket(e,r,i){let a=e.track.source._codec;if(a==="mp3"||a==="ac3"||a==="eac3")return r.data;if(e.inputIsAdts===null){let u=i?.decoderConfig?.description;if(e.inputIsAdts=!u,!e.inputIsAdts){let l=At(j(u)),m=ka(l);e.adtsHeader=m.header,e.adtsHeaderBitstream=m.bitstream}}if(e.inputIsAdts)return r.data;h(e.adtsHeader),h(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 flushTimestampQueue(e,r=!0){if(e.timestampProcessingQueue.length===0)return;let i=e.timestampProcessingQueue.map(a=>a.presentationTimestamp).sort((a,s)=>a-s);for(let a=0;a<e.timestampProcessingQueue.length;a++){let s=e.timestampProcessingQueue[a];s.decodeTimestamp=i[a],e.packetQueue.push(s)}e.timestampProcessingQueue.length=0,r&&await this.interleavePackets()}async interleavePackets(e=!1){if(!this.tablesWritten){if(!this.allTracksAreKnown()&&!e)return;this.writeTables()}e:for(;;){let r=null,i=1/0;for(let s of this.trackDatas){if(!e&&s.packetQueue.length===0&&!s.closed)break e;s.packetQueue.length>0&&s.packetQueue[0].presentationTimestamp<i&&(r=s,i=s.packetQueue[0].presentationTimestamp)}if(!r)break;let a=r.packetQueue.shift();this.writePesPacket(r,a)}e||await this.writer.flush()}writeTables(){h(!this.tablesWritten),this.writePsiSection(Fp,ai),this.writePsiSection(om,Op(this.trackDatas)),this.tablesWritten=!0}writePsiSection(e,r){let i=0,a=!0;for(;i<r.length;){let o=184-(a?1:0),c=r.length-i,u=Math.min(o,c),l;a?(l=this.payloadBuffer.subarray(0,1+u),l[0]=0,l.set(r.subarray(i,i+u),1)):l=r.subarray(i,i+u),this.writeTsPacket(e,a,null,l),i+=u,a=!1}}writePesPacket(e,r){let i=e.track.type==="video",a=i?10:5,s=new Uint8Array(9+a),o=V(s),c=new W(s.subarray(9));zr(o,0,1,!1),s[3]=e.streamId;let u=e.track.type==="video"?0:Math.min(8+r.data.length,65535);o.setUint16(4,u,!1),o.setUint8(6,132),o.setUint8(7,i?192:128),o.setUint8(8,a);let l=Math.round(r.presentationTimestamp*9e4);if(c.pos=0,c.writeBits(4,i?3:2),c.writeBits(3,l>>>30&7),c.writeBits(1,1),c.writeBits(15,l>>>15&32767),c.writeBits(1,1),c.writeBits(15,l&32767),c.writeBits(1,1),i){h(r.decodeTimestamp!==null);let p=Math.round(r.decodeTimestamp*9e4);c.writeBits(4,1),c.writeBits(3,p>>>30&7),c.writeBits(1,1),c.writeBits(15,p>>>15&32767),c.writeBits(1,1),c.writeBits(15,p&32767),c.writeBits(1,1)}let m=s.length+r.data.length,d=0,f=!0;for(;d<m;){let p=f,b=m-d,g=f&&r.isKeyframe,y=f&&!e.firstPacketWritten,k=Math.max(0,184-b),w;g||y?w=Math.max(2,k):w=k;let T=null;if(w>0){let I=this.adaptationFieldBuffer;w===1?I[0]=0:(I[0]=w-1,I[1]=Number(y)<<7|Number(g)<<6,I.fill(255,2,w)),T=I.subarray(0,w)}let S=Math.min(184-w,b),x=this.payloadBuffer.subarray(0,S),P=0;if(d<s.length){let I=Math.min(s.length-d,S);x.set(s.subarray(d,d+I),0),P=I}let A=Math.max(0,d-s.length),C=A+(S-P);P<S&&x.set(r.data.subarray(A,C),P),this.writeTsPacket(e.pid,p,T,x),d+=S,f=!1}e.firstPacketWritten=!0}writeTsPacket(e,r,i,a){let s=this.continuityCounters.get(e)??0,o=a.length>0,c=i?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;i&&(this.packetBuffer.set(i,u),u+=i.length),this.packetBuffer.set(a,u),u+=a.length,u<188&&this.packetBuffer.fill(255,u);let l=this.writer.getPos();this.writer.write(this.packetBuffer),this.format._options.onPacket&&this.format._options.onPacket(this.packetBuffer.slice(),l)}async onTrackClose(e){let r=await this.mutex.acquire(),i=this.trackDatas.find(a=>a.track===e);i&&(i.closed=!0,await this.flushTimestampQueue(i,!1)),this.allTracksAreKnown()&&this.allTracksKnown.resolve(),await this.interleavePackets(),r()}async finalize(){let e=await this.mutex.acquire();this.allTracksKnown.resolve();for(let r of this.trackDatas)r.closed=!0,await this.flushTimestampQueue(r,!1);await this.interleavePackets(!0),e()}},Bp=79764919,cm=new Uint32Array(256);for(let n=0;n<256;n++){let t=n<<24;for(let e=0;e<8;e++)t=t&2147483648?t<<1^Bp:t<<1;cm[n]=t>>>0&4294967295}var um=n=>{let t=4294967295;for(let e=0;e<n.length;e++){let r=n[e];t=(t<<8^cm[t>>>24^r])>>>0}return t},ai=new Uint8Array(16);{let n=V(ai);ai[0]=0,n.setUint16(1,45069,!1),n.setUint16(3,1,!1),ai[5]=193,ai[6]=0,ai[7]=0,n.setUint16(8,1,!1),n.setUint16(10,57344|om&8191,!1),n.setUint32(12,um(ai.subarray(0,12)),!1)}var Op=n=>{let t=0;for(let c of n)t+=5,c.streamType===129?t+=bn.length:c.streamType===135&&(t+=yn.length);let e=9+t+4,r=new Uint8Array(3+e-4),i=V(r);r[0]=2,i.setUint16(1,45056|e&4095,!1),i.setUint16(3,1,!1),r[5]=193,r[6]=0,r[7]=0,i.setUint16(8,65535,!1),i.setUint16(10,61440,!1);let a=12;for(let c of n)r[a++]=c.streamType,i.setUint16(a,57344|c.pid&8191,!1),a+=2,c.streamType===129?(i.setUint16(a,61440|bn.length,!1),a+=2,r.set(bn,a),a+=bn.length):c.streamType===135?(i.setUint16(a,61440|yn.length,!1),a+=2,r.set(yn,a),a+=yn.length):(i.setUint16(a,61440,!1),a+=2);let s=um(r),o=new Uint8Array(r.length+4);return o.set(r,0),V(o).setUint32(r.length,s,!1),o};var go=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 bo=class extends ye{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.isRf64=!!r._options.large}async start(){let e=await this.mutex.acquire();this.writer=await this.output._getRootWriter(!1),this.riffWriter=new go(this.writer),e()}async getMimeType(){return"audio/wav"}async addEncodedVideoPacket(){throw new Error("WAVE does not support video.")}async addEncodedAudioPacket(e,r,i){let a=await this.mutex.acquire();try{if(this.headerWritten||(_e(i),h(i),h(i.decoderConfig),this.writeHeader(e,i.decoderConfig),this.sampleRate=i.decoderConfig.sampleRate,this.headerWritten=!0),this.validateTimestamp(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 i,a=e.source._codec,s=Ae(a);s.dataType==="ulaw"?i=7:s.dataType==="alaw"?i=6:s.dataType==="float"?i=3:i=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(i),this.riffWriter.writeU16(o),this.riffWriter.writeU32(c),this.riffWriter.writeU32(c*u),this.riffWriter.writeU16(u),this.riffWriter.writeU16(8*s.sampleSize),!Wt(this.output._metadataTags)){let l=this.format._options.metadataFormat??"info";l==="info"?this.writeInfoChunk(this.output._metadataTags):l==="id3"?this.writeId3Chunk(this.output._metadataTags):ne(l)}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:l,start:m}=this.writer.stopTrackingWrites();this.format._options.onHeader(l,m)}}writeInfoChunk(e){let r=this.writer.getPos();this.riffWriter.writeAscii("LIST"),this.riffWriter.writeU32(0),this.riffWriter.writeAscii("INFO");let i=new Set,a=(c,u)=>{if(!Je(u)){console.warn(`Didn't write tag '${c}' because '${u}' is not ISO 8859-1-compatible.`);return}let l=u.length+1,m=new Uint8Array(l);for(let d=0;d<u.length;d++)m[d]=u.charCodeAt(d);this.riffWriter.writeAscii(c),this.riffWriter.writeU32(l),this.writer.write(m),l&1&&this.writer.write(new Uint8Array(1)),i.add(c)};for(let{key:c,value:u}of it(e))switch(c){case"title":a("INAM",u),i.add("INAM");break;case"artist":a("IART",u),i.add("IART");break;case"album":a("IPRD",u),i.add("IPRD");break;case"trackNumber":{let l=e.tracksTotal!==void 0?`${u}/${e.tracksTotal}`:u.toString();a("ITRK",l),i.add("ITRK")}break;case"genre":a("IGNR",u),i.add("IGNR");break;case"date":a("ICRD",u.toISOString().slice(0,10)),i.add("ICRD");break;case"comment":a("ICMT",u),i.add("ICMT");break;case"albumArtist":case"discNumber":case"tracksTotal":case"discsTotal":case"description":case"lyrics":case"images":break;case"raw":break;default:ne(c)}if(e.raw)for(let c in e.raw){let u=e.raw[c];u==null||c.length!==4||i.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 vr(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?(h(this.ds64RiffSizePos!==null),this.writer.seek(this.ds64RiffSizePos),this.riffWriter.writeU64(r-8),h(this.ds64DataSizePos!==null),this.writer.seek(this.ds64DataSizePos),this.riffWriter.writeU64(this.dataSize),h(this.ds64SampleCountPos!==null),this.writer.seek(this.ds64SampleCountPos),this.riffWriter.writeU64(this.sampleCount)):(h(this.riffSizePos!==null),this.writer.seek(this.riffSizePos),this.riffWriter.writeU32(r-8),h(this.dataSizePos!==null),this.writer.seek(this.dataSizePos),this.riffWriter.writeU32(this.dataSize)),e()}};var Ji=class{constructor(t){this.sourceSampleRate=null;this.sourceNumberOfChannels=null;this.maxWrittenFrame=null;this.targetSampleRate=t.targetSampleRate,this.targetNumberOfChannels=t.targetNumberOfChannels,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=Math.floor(t.startTime*this.targetSampleRate),this.timestampOffset=t.startTime-this.bufferStartFrame/this.targetSampleRate}doChannelMixerSetup(){h(this.sourceNumberOfChannels!==null);let t=this.sourceNumberOfChannels,e=this.targetNumberOfChannels;t===1&&e===2?this.channelMixer=(r,i)=>r[i*t]:t===1&&e===4?this.channelMixer=(r,i,a)=>r[i*t]*+(a<2):t===1&&e===6?this.channelMixer=(r,i,a)=>r[i*t]*+(a===2):t===2&&e===1?this.channelMixer=(r,i)=>{let a=i*t;return .5*(r[a]+r[a+1])}:t===2&&e===4?this.channelMixer=(r,i,a)=>r[i*t+a]*+(a<2):t===2&&e===6?this.channelMixer=(r,i,a)=>r[i*t+a]*+(a<2):t===4&&e===1?this.channelMixer=(r,i)=>{let a=i*t;return .25*(r[a]+r[a+1]+r[a+2]+r[a+3])}:t===4&&e===2?this.channelMixer=(r,i,a)=>{let s=i*t;return .5*(r[s+a]+r[s+a+2])}:t===4&&e===6?this.channelMixer=(r,i,a)=>{let s=i*t;return a<2?r[s+a]:a===2||a===3?0:r[s+a-2]}:t===6&&e===1?this.channelMixer=(r,i)=>{let a=i*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,i,a)=>{let s=i*t;return r[s+a]+Math.SQRT1_2*(r[s+2]+r[s+a+4])}:t===6&&e===4?this.channelMixer=(r,i,a)=>{let s=i*t;return a<2?r[s+a]+Math.SQRT1_2*r[s+2]:r[s+a+2]}:this.channelMixer=(r,i,a)=>a<t?r[i*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"}),i=new Float32Array(this.tempSourceBuffer.buffer,0,r/4);t.copyTo(i,{planeIndex:0,format:"f32"});let a=t.timestamp,s=Math.min(t.timestamp+t.duration,this.endTime),o=Math.floor(a*this.targetSampleRate),c=Math.ceil(s*this.targetSampleRate);for(let u=o;u<c;u++){if(u<this.bufferStartFrame)continue;for(;u>=this.bufferStartFrame+this.bufferSizeInFrames;)await this.finalizeCurrentBuffer(),this.bufferStartFrame+=this.bufferSizeInFrames;let l=u-this.bufferStartFrame;h(l<this.bufferSizeInFrames);let f=(u/this.targetSampleRate-a)*this.sourceSampleRate,p=Math.floor(f),b=Math.ceil(f),g=f-p;for(let y=0;y<this.targetNumberOfChannels;y++){let k=0,w=0;p>=0&&p<t.numberOfFrames&&(k=this.channelMixer(i,p,y)),b>=0&&b<t.numberOfFrames&&(w=this.channelMixer(i,b,y));let T=k+g*(w-k),S=l*this.targetNumberOfChannels+y;this.outputBuffer[S]+=T}this.maxWrittenFrame===null?this.maxWrittenFrame=l:this.maxWrittenFrame=Math.max(this.maxWrittenFrame,l)}}async finalizeCurrentBuffer(){if(this.maxWrittenFrame===null)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,i=new be({format:"f32",sampleRate:this.targetSampleRate,numberOfChannels:this.targetNumberOfChannels,timestamp:r+this.timestampOffset,data:e});await this.onSample(i),this.outputBuffer.fill(0),this.maxWrittenFrame=null}finalize(){return this.finalizeCurrentBuffer()}};var si=class{constructor(){this._connectedTrack=null;this._closingPromise=null;this._closed=!1}_ensureValidAdd(){if(!this._connectedTrack)throw new Error("Source is not connected to an output track.");if(this._connectedTrack.output.state==="canceled")throw new Error("Output has been canceled.");if(this._connectedTrack.output.state==="finalizing"||this._connectedTrack.output.state==="finalized")throw new Error("Output has been finalized.");if(this._connectedTrack.output.state==="pending")throw new Error("Output has not started.");if(this._closed)throw new Error("Source is closed.")}async _start(){}async _flushAndClose(t){}close(){if(this._closingPromise)return;let t=this._connectedTrack;if(!t)throw new Error("Cannot call close without connecting the source to an output track.");if(t.output.state==="pending")throw new Error("Cannot call close before output has been started.");this._closingPromise=(async()=>{await this._flushAndClose(!1),this._closed=!0,!(t.output.state==="finalizing"||t.output.state==="finalized")&&t.output._muxer.onTrackClose(t)})()}async _flushOrWaitForOngoingClose(t){return this._closingPromise??=(async()=>{await this._flushAndClose(t),this._closed=!0})()}},Rt=class extends si{constructor(e){super();this._connectedTrack=null;if(!te.includes(e))throw new TypeError(`Invalid video codec '${e}'. Must be one of: ${te.join(", ")}.`);this._codec=e}},lu=(n,t)=>{if(n.metadata.hasOnlyKeyPackets&&t.type!=="key")throw new Error("Cannot add non-key packets to a hasOnlyKeyPackets video track.")},Mr=class extends Rt{constructor(t){super(t)}add(t,e){if(!(t instanceof Q))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(),lu(this._connectedTrack,t),this._connectedTrack.output._muxer.addEncodedVideoPacket(this._connectedTrack,t,e)}},aa=class{constructor(t,e){this.source=t;this.encodingConfig=e;this.ensureEncoderPromise=null;this.encoderInitialized=!1;this.encoder=null;this.muxer=null;this.lastMultipleOfKeyFrameInterval=-1;this.emittedEncoderPackets=0;this.codedWidth=null;this.codedHeight=null;this.outputWidth=null;this.outputHeight=null;this.frameRateLastSample=null;this.frameRateLastTimestamp=null;this.frameRateLastEndTimestamp=null;this.preciseTimings=[];this.customEncoder=null;this.customEncoderCallSerializer=new Mt;this.customEncoderQueueSize=0;this.alphaEncoder=null;this.splitter=null;this.splitterCreationFailed=!1;this.alphaFrameQueue=[];this.error=null;this.lastMuxerPromise=Promise.resolve()}async add(t,e,r){let i=t;try{this.checkForEncoderError(),this.source._ensureValidAdd();let a=this.encodingConfig,s=a.sizeChangeBehavior??"deny",o=!1;if(this.codedWidth!==null&&this.codedHeight!==null){if((t.codedWidth!==this.codedWidth||t.codedHeight!==this.codedHeight)&&(o=!0,s==="deny"))throw new Error(`Video sample size must remain constant. Expected ${this.codedWidth}x${this.codedHeight}, got ${t.codedWidth}x${t.codedHeight}. To allow the sample size to change over time, set \`sizeChangeBehavior\` to a value other than 'deny' in the encoding options.`)}else this.codedWidth=t.codedWidth,this.codedHeight=t.codedHeight;if(a.transform?.width!==void 0||a.transform?.height!==void 0||a.transform?.rotate!==void 0||a.transform?.crop!==void 0||a.transform?.force===!0||o&&s!=="passThrough"){let m=a.transform?.width,d=a.transform?.height,f=a.transform?.fit??"fill";o&&s!=="passThrough"&&(h(this.outputWidth),h(this.outputHeight),h(s!=="deny"),m=this.outputWidth,d=this.outputHeight,f=s);let p=await t.transform({width:m,height:d,roundDimensionsTo:2,crop:a.transform?.crop,rotate:a.transform?.rotate,fit:f,alpha:a.alpha});(this.outputWidth===null||this.outputHeight===null)&&(this.outputWidth=p.displayWidth,this.outputHeight=p.displayHeight),e&&t.close(),t=p,e=!0}else(this.outputWidth===null||this.outputHeight===null)&&(this.outputWidth=t.codedWidth,this.outputHeight=t.codedHeight);let l=a.transform?.frameRate;if(l!==void 0){let m=t.timestamp+t.duration,d=Go(t.timestamp,l);if(this.frameRateLastSample!==null)if(d<=this.frameRateLastTimestamp){this.frameRateLastSample.close(),this.frameRateLastSample=t.clone(),this.frameRateLastEndTimestamp=m;return}else await this.padFrameRate(d,r);t===i&&(t=t.clone(),e=!0),t.setTimestamp(d),t.setDuration(1/l),this.frameRateLastSample?.close(),this.frameRateLastSample=t.clone(),this.frameRateLastTimestamp=d,this.frameRateLastEndTimestamp=m}await this.processAndEncode(t,r)}finally{e&&t.close()}}async processAndEncode(t,e){let r=this.encodingConfig,i;if(r.transform?.process){let a=r.transform.process(t);if(a instanceof Promise&&(a=await a),a===null)return;Array.isArray(a)||(a=[a]),i=a.map(s=>s instanceof ke?s:typeof VideoFrame<"u"&&s instanceof VideoFrame?new ke(s):new ke(s,{timestamp:t.timestamp,duration:t.duration}))}else i=[t];try{for(let a of i){this.encoderInitialized||(this.ensureEncoderPromise||this.ensureEncoder(a),this.encoderInitialized||await this.ensureEncoderPromise),h(this.encoderInitialized);let s=this.encodingConfig.keyFrameInterval??2,o=Math.floor(a.timestamp/s),c={...e,keyFrame:e?.keyFrame||s===0||o!==this.lastMultipleOfKeyFrameInterval};if(this.lastMultipleOfKeyFrameInterval=o,this.customEncoder){this.customEncoderQueueSize++;let u=a.clone(),l=this.customEncoderCallSerializer.call(()=>this.customEncoder.encode(u,c)).then(()=>this.customEncoderQueueSize--).catch(m=>this.error??=m).finally(()=>{u.close()});this.customEncoderQueueSize>=4&&await l}else{h(this.encoder);let u=a.toVideoFrame(),l=H(this.preciseTimings,u.timestamp,d=>d.microsecondTimestamp),m=l!==-1?this.preciseTimings[l]:null;if(m&&m.microsecondTimestamp===u.timestamp?(m.timestamp!==a.timestamp&&(m.timestampIsValid=!1),m.duration!==a.duration&&(m.durationIsValid=!1)):(this.preciseTimings.splice(l+1,0,{microsecondTimestamp:u.timestamp,timestamp:a.timestamp,duration:a.duration,timestampIsValid:!0,durationIsValid:!0}),this.preciseTimings.length>128&&this.preciseTimings.shift()),!this.alphaEncoder)this.encoder.encode(u,c),u.close();else if(!!u.format&&!u.format.includes("A")||this.splitterCreationFailed)this.alphaFrameQueue.push(null),this.encoder.encode(u,c),u.close();else{let f=u.displayWidth,p=u.displayHeight;this.splitter||(this.splitter=new du(f,p));let{colorFrame:b,alphaFrame:g}=await this.splitter.update(u);this.alphaFrameQueue.push(g),this.encoder.encode(b,c),b.close()}this.encoder.encodeQueueSize>=4&&await new Promise(d=>this.encoder.addEventListener("dequeue",d,{once:!0}))}await this.lastMuxerPromise}}finally{for(let a of i)a!==t&&a.close()}}async padFrameRate(t,e){let r=this.encodingConfig.transform.frameRate;h(this.frameRateLastSample);let i=Math.round((t-this.frameRateLastTimestamp)*r);for(let a=1;a<i;a++){let s=this.frameRateLastSample.clone();s.setTimestamp(this.frameRateLastTimestamp+a/r),s.setDuration(1/r),await this.processAndEncode(s,e),s.close()}}ensureEncoder(t){this.ensureEncoderPromise=(async()=>{let e=Lc({...this.encodingConfig,width:t.codedWidth,height:t.codedHeight,squarePixelWidth:t.squarePixelWidth,squarePixelHeight:t.squarePixelHeight,framerate:this.source._connectedTrack?.metadata.frameRate});this.encodingConfig.onEncoderConfig?.(e);let r=Hi.find(i=>i.supports(this.encodingConfig.codec,e));if(r)this.customEncoder=new r,this.customEncoder.codec=this.encodingConfig.codec,this.customEncoder.config=e,this.customEncoder.onPacket=(i,a)=>{if(!(i instanceof Q))throw new TypeError("The first argument passed to onPacket must be an EncodedPacket.");if(a!==void 0&&(!a||typeof a!="object"))throw new TypeError("The second argument passed to onPacket must be an object or undefined.");lu(this.source._connectedTrack,i),this.encodingConfig.onEncodedPacket?.(i,a),this.lastMuxerPromise=this.muxer.addEncodedVideoPacket(this.source._connectedTrack,i,a).catch(s=>{this.error??=s})},await this.customEncoder.init();else{if(typeof VideoEncoder>"u")throw new Error("VideoEncoder is not supported by this browser.");if(e.alpha="discard",this.encodingConfig.alpha==="keep"&&(e.latencyMode="quality"),(e.width%2===1||e.height%2===1)&&(this.encodingConfig.codec==="avc"||this.encodingConfig.codec==="hevc"))throw new Error(`The dimensions ${e.width}x${e.height} are not supported for codec '${this.encodingConfig.codec}'; both width and height must be even numbers. Make sure to round your dimensions to the nearest even number.`);if(!(await VideoEncoder.isConfigSupported(e)).supported)throw new Error(`This specific encoder configuration (${e.codec}, ${e.bitrate} bps, ${e.width}x${e.height}, hardware acceleration: ${e.hardwareAcceleration??"no-preference"}) is not supported by this browser. Consider using another codec or changing your video parameters.`);let s=[],o=[],c=0,u=0,l=(d,f,p)=>{let b={};if(f){let T=new Uint8Array(f.byteLength);f.copyTo(T),b.alpha=T}let g=Q.fromEncodedChunk(d,b),y=H(this.preciseTimings,d.timestamp,T=>T.microsecondTimestamp),k=y!==-1?this.preciseTimings[y]:null,w=null;this.emittedEncoderPackets===0&&g.type==="delta"&&p?.decoderConfig&&(w=pr(this.encodingConfig.codec,p.decoderConfig,g.data)),(k&&k.microsecondTimestamp===d.timestamp||w!==null)&&(g=g.clone({timestamp:k?.timestampIsValid?k.timestamp:void 0,duration:k?.durationIsValid?k.duration:void 0,type:w??void 0})),lu(this.source._connectedTrack,g),this.encodingConfig.onEncodedPacket?.(g,p),this.lastMuxerPromise=this.muxer.addEncodedVideoPacket(this.source._connectedTrack,g,p).catch(T=>{this.error??=T}),this.emittedEncoderPackets++},m=new Error("Encoding error").stack;if(this.encoder=new VideoEncoder({output:(d,f)=>{if(!this.alphaEncoder){l(d,null,f);return}let p=this.alphaFrameQueue.shift();h(p!==void 0),p?(this.alphaEncoder.encode(p,{keyFrame:d.type==="key"}),u++,p.close(),s.push({chunk:d,meta:f})):u===0?l(d,null,f):(o.push(c+u),s.push({chunk:d,meta:f}))},error:d=>{d.stack=m,this.error??=d}}),this.encoder.configure(e),this.encodingConfig.alpha==="keep"){let d=new Error("Encoding error").stack;this.alphaEncoder=new VideoEncoder({output:(f,p)=>{u--;let b=s.shift();for(h(b!==void 0),l(b.chunk,f,b.meta),c++;o.length>0&&o[0]===c;){o.shift();let g=s.shift();h(g!==void 0),l(g.chunk,null,g.meta)}},error:f=>{f.stack=d,this.error??=f}}),this.alphaEncoder.configure(e)}}h(this.source._connectedTrack),this.muxer=this.source._connectedTrack.output._muxer,this.encoderInitialized=!0})()}async flushAndClose(t){if(t||this.checkForEncoderError(),!t&&this.frameRateLastSample){let e=this.encodingConfig.transform.frameRate,r=Go(this.frameRateLastEndTimestamp,e);await this.padFrameRate(r)}this.frameRateLastSample?.close(),this.frameRateLastSample=null,this.customEncoder?(t||this.customEncoderCallSerializer.call(()=>this.customEncoder.flush()),await this.customEncoderCallSerializer.call(()=>this.customEncoder.close())):this.encoder&&(t||(await this.encoder.flush(),await this.alphaEncoder?.flush()),this.encoder.state!=="closed"&&this.encoder.close(),this.alphaEncoder&&this.alphaEncoder.state!=="closed"&&this.alphaEncoder.close(),this.alphaFrameQueue.forEach(e=>e?.close()),this.splitter?.close()),t||this.checkForEncoderError()}getQueueSize(){return this.customEncoder?this.customEncoderQueueSize:this.encoder?.encodeQueueSize??0}checkForEncoderError(){if(this.error)throw this.error}},lm=!1,Ao=class Ao{constructor(t,e){this.canvas=null;this.gl=null;this.colorProgram=null;this.alphaProgram=null;this.vao=null;this.sourceTexture=null;this.alphaResolutionLocation=null;this.worker=null;this.pendingRequests=new Map;this.nextRequestId=0;let r=typeof OffscreenCanvas<"u"||typeof document<"u"&&typeof document.createElement=="function";if(!Ao.forceCpu&&r&&!lm)try{typeof OffscreenCanvas<"u"?this.canvas=new OffscreenCanvas(t,e):(this.canvas=document.createElement("canvas"),this.canvas.width=t,this.canvas.height=e);let i=this.canvas.getContext("webgl2",{alpha:!0});if(!i)throw new Error("Couldn't acquire WebGL 2 context.");this.gl=i,this.colorProgram=this.createColorProgram(),this.alphaProgram=this.createAlphaProgram(),this.vao=this.createVAO(),this.sourceTexture=this.createTexture(),this.alphaResolutionLocation=this.gl.getUniformLocation(this.alphaProgram,"u_resolution"),this.gl.useProgram(this.colorProgram),this.gl.uniform1i(this.gl.getUniformLocation(this.colorProgram,"u_sourceTexture"),0),this.gl.useProgram(this.alphaProgram),this.gl.uniform1i(this.gl.getUniformLocation(this.alphaProgram,"u_sourceTexture"),0)}catch(i){this.gl=null,this.canvas=null,lm=!0,console.warn("Falling back to CPU for color/alpha splitting.",i)}}async update(t){return this.gl?this.updateGpu(t):this.updateCpu(t)}updateGpu(t){h(this.gl),h(this.canvas),(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);let e=this.runColorProgram(t),r=this.runAlphaProgram(t);return t.close(),{colorFrame:e,alphaFrame:r}}createVertexShader(){return h(this.gl),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;
			}
		`)}createColorProgram(){h(this.gl);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(){h(this.gl);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){h(this.gl);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(){h(this.gl),h(this.colorProgram);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 i=this.gl.getAttribLocation(this.colorProgram,"a_position"),a=this.gl.getAttribLocation(this.colorProgram,"a_texCoord");return this.gl.enableVertexAttribArray(i),this.gl.vertexAttribPointer(i,2,this.gl.FLOAT,!1,16,0),this.gl.enableVertexAttribArray(a),this.gl.vertexAttribPointer(a,2,this.gl.FLOAT,!1,16,8),t}createTexture(){h(this.gl);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}runColorProgram(t){return h(this.gl),h(this.canvas),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"})}runAlphaProgram(t){h(this.gl),h(this.canvas),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,i=Math.ceil(e/2)*Math.ceil(r/2),a=e*r+i*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),h(o[e*r]===128),h(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)}updateCpu(t){if(!this.worker){let i=new Blob([`(${Dp.toString()})()`],{type:"application/javascript"}),a=URL.createObjectURL(i);this.worker=new Worker(a),URL.revokeObjectURL(a),this.worker.addEventListener("message",s=>{let o=s.data,c=this.pendingRequests.get(o.id);c&&(this.pendingRequests.delete(o.id),"error"in o?c.reject(new Error(o.error)):c.resolve({colorFrame:o.colorFrame,alphaFrame:o.alphaFrame}))}),this.worker.addEventListener("error",s=>{let o=new Error(s.message||"Color/alpha splitter worker error.");for(let c of this.pendingRequests.values())c.reject(o);this.pendingRequests.clear()})}let e=this.nextRequestId++,r=Z();return this.pendingRequests.set(e,r),this.worker.postMessage({id:e,sourceFrame:t},{transfer:[t]}),r.promise}close(){this.gl?.getExtension("WEBGL_lose_context")?.loseContext(),this.gl=null,this.canvas=null,this.worker?.terminate(),this.worker=null;let t=new Error("Color/alpha splitter closed.");for(let e of this.pendingRequests.values())e.reject(t);this.pendingRequests.clear()}};Ao.forceCpu=!0;var du=Ao,Dp=()=>{let n=null,t=Promise.resolve();self.addEventListener("message",a=>{let{id:s,sourceFrame:o}=a.data;t=t.then(async()=>{try{let{colorFrame:c,alphaFrame:u}=await e(o);self.postMessage({id:s,colorFrame:c,alphaFrame:u},{transfer:[c,u]})}catch(c){self.postMessage({id:s,error:c.message})}finally{o.close()}})});let e=async a=>{let s=a.format;if(!s)throw new Error("CPU color/alpha splitting requires a known VideoFrame format.");let o=a.codedWidth,c=a.codedHeight,u=a.allocationSize();if((!n||n.byteLength!==u)&&(n=new Uint8Array(u)),await a.copyTo(n),s==="RGBA"||s==="BGRA")return r(n,o,c,s,a);if(s==="I420A"||s==="I420AP10"||s==="I420AP12"||s==="I422A"||s==="I422AP10"||s==="I422AP12"||s==="I444A"||s==="I444AP10"||s==="I444AP12")return i(n,o,c,s,a);throw new Error(`CPU color/alpha splitting does not support format '${s}'.`)},r=(a,s,o,c,u)=>{let l=s*o,m=Math.ceil(s/2),d=Math.ceil(o/2),f=l+m*d*2,p=new Uint8Array(f);for(let k=0,w=3;k<l;k++,w+=4)p[k]=a[w];p.fill(128,l);let b=new VideoFrame(a,{format:c==="RGBA"?"RGBX":"BGRX",codedWidth:s,codedHeight:o,timestamp:u.timestamp,duration:u.duration??void 0}),g={format:"I420",codedWidth:s,codedHeight:o,timestamp:u.timestamp,duration:u.duration??void 0,transfer:[p.buffer]},y=new VideoFrame(p,g);return{colorFrame:b,alphaFrame:y}},i=(a,s,o,c,u)=>{let l=c.includes("P10"),m=c.includes("P12"),d=l||m?2:1,f,p;c.startsWith("I420")?(f=Math.ceil(s/2),p=Math.ceil(o/2)):c.startsWith("I422")?(f=Math.ceil(s/2),p=o):(f=s,p=o);let b=s*o,g=f*p,y=b*d,k=g*d,w=b*d,T=y+k*2,S=c.replace("A",""),x=Math.ceil(s/2),P=Math.ceil(o/2),A=x*P,C=A*d,I=w+2*C,R=new Uint8Array(I),v=T;R.set(a.subarray(v,v+w),0);let E=w,D=l?512:m?2048:128;d===1?R.fill(D,E):new Uint16Array(R.buffer,E,2*A).fill(D);let U=l?"I420P10":m?"I420P12":"I420",z=new VideoFrame(a.subarray(0,T),{format:S,codedWidth:s,codedHeight:o,timestamp:u.timestamp,duration:u.duration??void 0}),q={format:U,codedWidth:s,codedHeight:o,timestamp:u.timestamp,duration:u.duration??void 0,transfer:[R.buffer]},Te=new VideoFrame(R,q);return{colorFrame:z,alphaFrame:Te}}},oi=class extends Rt{constructor(t){js(t),super(t.codec),this._encoder=new aa(this,t)}add(t,e){if(!(t instanceof ke))throw new TypeError("videoSample must be a VideoSample.");return this._encoder.add(t,!1,e)}_flushAndClose(t){return this._encoder.flushAndClose(t)}},yo=class extends Rt{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.");js(e),super(e.codec),this._encoder=new aa(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 i=new ke(this._canvas,{timestamp:t,duration:e});return this._encoder.add(i,!0,r)}_flushAndClose(t){return this._encoder.flushAndClose(t)}},ko=class extends Rt{constructor(e,r,i={}){if(!(e instanceof MediaStreamTrack)||e.kind!=="video")throw new TypeError("track must be a video MediaStreamTrack.");if(js(r),typeof i!="object"||!i)throw new TypeError("options must be an object.");if(i.frameRate!=null&&(typeof i.frameRate!="number"||i.frameRate<=0))throw new TypeError("options.frameRate, when provided, must be either a positive number or null.");if(i.timestampBase!==void 0&&i.timestampBase!=="synced-zero"&&i.timestampBase!=="zero"&&i.timestampBase!=="unix")throw new TypeError("options.timestampBase, when provided, must be one of 'synced-zero', 'zero', or 'unix'.");r={...r,latencyMode:"realtime"};super(r.codec);this._abortController=null;this._workerTrackId=null;this._workerListener=null;this._promiseWithResolvers=Z();this._errorPromiseAccessed=!1;this._paused=!1;this._lastVideoFrame=null;this._timerHandle=null;this._videoElement=null;this._options=i,this._encoder=new aa(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.");let e=this._options.frameRate!==void 0?this._options.frameRate:this._track.getSettings().frameRate??null;this._abortController=new AbortController;let r=null,i=null,a=0,s=!1,o=null,c=0,u=()=>{if(h(e!==null),!this._lastVideoFrame)return;h(i!==null),h(r!==null);let d=performance.now();for(;d-i>1e3/e;){i+=1e3/e;let f=r+a/e,p=new VideoFrame(this._videoElement??this._lastVideoFrame,{timestamp:1e6*f,duration:1e6/e});m(p,d)}};e!==null&&(this._timerHandle=Lu(u,4));let l=d=>{if(e===null)m(d);else{let f=performance.now();this._lastVideoFrame?(u(),this._lastVideoFrame?.close(),this._lastVideoFrame=d):(m(d.clone(),f),i=f,this._lastVideoFrame=d)}},m=(d,f=performance.now())=>{if(s){d.close();return}a++;let p=d.timestamp/1e6;if(this._paused){if(r!==null){if(o!==null&&this._options.timestampBase!=="unix"){let y=p-o;c-=y}o=p}d.close();return}if(r===null){r=p;let g,y=this._options.timestampBase??"synced-zero";if(y==="unix")g=Date.now()/1e3;else if(y==="zero")g=0;else{let k=this._connectedTrack.output;k._firstMediaStreamTimestamp===null?(k._firstMediaStreamTimestamp=f/1e3,g=0):g=f/1e3-k._firstMediaStreamTimestamp}c=g-r}if(o=p,this._encoder.getQueueSize()>=8){d.close();return}let b=new ke(d,{timestamp:p+c});this._encoder.add(b,!0).catch(g=>{s=!0,this._abortController?.abort(),this._promiseWithResolvers.reject(g),this._workerTrackId!==null&&uu({type:"stopTrack",trackId:this._workerTrackId})})};if(typeof MediaStreamTrackProcessor<"u"){let d=new MediaStreamTrackProcessor({track:this._track}),f=new WritableStream({write:l});d.readable.pipeTo(f,{signal:this._abortController.signal}).catch(p=>{p instanceof DOMException&&p.name==="AbortError"||this._promiseWithResolvers.reject(p)})}else if(await Np())this._workerTrackId=Up++,uu({type:"videoTrack",trackId:this._workerTrackId,track:this._track}),this._workerListener=f=>{let p=f.data;p.type==="videoFrame"&&p.trackId===this._workerTrackId?l(p.videoFrame):p.type==="error"&&p.trackId===this._workerTrackId&&this._promiseWithResolvers.reject(p.error)},Ye.addEventListener("message",this._workerListener);else if(e!==null){let f=document.createElement("video");f.style.position="fixed",f.style.left="-10000px",f.style.top="-10000px",f.style.width="1px",f.style.height="1px",f.style.opacity="0",f.style.pointerEvents="none",f.muted=!0,f.srcObject=new MediaStream([this._track]),document.body.appendChild(f),this._videoElement=f,f.addEventListener("loadeddata",()=>{if(s||!this._videoElement)return;let p=new VideoFrame(f,{timestamp:1e3*performance.now()});l(p),p.close()},{once:!0}),f.play().catch(p=>{s=!0,this._promiseWithResolvers.reject(p)})}else throw new Error("When no explicit frame rate is set, MediaStreamTrackProcessor is required; but it's 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._timerHandle&&Wu(this._timerHandle),this._lastVideoFrame?.close(),this._videoElement&&(this._videoElement.srcObject=null,this._videoElement.remove(),this._videoElement=null),this._workerTrackId!==null&&(h(this._workerListener),uu({type:"stopTrack",trackId:this._workerTrackId}),await new Promise(r=>{let i=a=>{let s=a.data;s.type==="trackStopped"&&s.trackId===this._workerTrackId&&(h(this._workerListener),Ye.removeEventListener("message",this._workerListener),Ye.removeEventListener("message",i),r())};Ye.addEventListener("message",i)})),await this._encoder.flushAndClose(e)}},Ft=class extends si{constructor(e){super();this._connectedTrack=null;if(!ae.includes(e))throw new TypeError(`Invalid audio codec '${e}'. Must be one of: ${ae.join(", ")}.`);this._codec=e}},Br=class extends Ft{constructor(t){super(t)}add(t,e){if(!(t instanceof Q))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)}},sa=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 Mt;this.customEncoderQueueSize=0;this.lastEndSampleIndex=null;this.resampler=null;this.error=null;this.lastMuxerPromise=Promise.resolve()}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;let r=this.encodingConfig;r.transform?.numberOfChannels!==void 0||r.transform?.sampleRate!==void 0?(this.resampler||(this.resampler=new Ji({targetNumberOfChannels:r.transform.numberOfChannels??t.numberOfChannels,targetSampleRate:r.transform.sampleRate??t.sampleRate,startTime:t.timestamp,endTime:1/0,onSample:async a=>{await this.processAndEncode(a,!0)}})),await this.resampler.add(t)):await this.processAndEncode(t,e)}finally{e&&t.close()}}async processAndEncode(t,e){let r=this.encodingConfig;if(r.transform?.sampleFormat!==void 0&&qs(t.format)!==r.transform.sampleFormat){let i=Gs(t,r.transform.sampleFormat);e&&t.close(),t=i,e=!0}if(r.transform?.process){let i=r.transform.process(t);if(i instanceof Promise&&(i=await i),i===null)return;Array.isArray(i)||(i=[i]);for(let a of i){if(!(a instanceof be))throw new TypeError("The audio process function must return an AudioSample, null, or an array of AudioSamples.");await this.encodeSample(a,!0)}e&&t.close()}else await this.encodeSample(t,e)}async encodeSample(t,e){try{this.encoderInitialized||(this.ensureEncoderPromise||this.ensureEncoder(t),this.encoderInitialized||await this.ensureEncoderPromise),h(this.encoderInitialized);{let r=Math.round(t.timestamp*t.sampleRate),i=Math.round((t.timestamp+t.duration)*t.sampleRate);if(this.lastEndSampleIndex===null)this.lastEndSampleIndex=i;else{let a=r-this.lastEndSampleIndex;if(a>=64){let s=new be({data:new Float32Array(a*t.numberOfChannels),format:"f32-planar",sampleRate:t.sampleRate,numberOfChannels:t.numberOfChannels,numberOfFrames:a,timestamp:this.lastEndSampleIndex/t.sampleRate});await this.encodeSample(s,!0)}this.lastEndSampleIndex+=t.numberOfFrames}}if(this.customEncoder){this.customEncoderQueueSize++;let r=t.clone(),i=this.customEncoderCallSerializer.call(()=>this.customEncoder.encode(r)).then(()=>this.customEncoderQueueSize--).catch(a=>this.error??=a).finally(()=>{r.close()});this.customEncoderQueueSize>=4&&await i,await this.lastMuxerPromise}else if(this.isPcmEncoder)await this.doPcmEncoding(t,e);else{h(this.encoder);let r=t.toAudioData();this.encoder.encode(r),r.close(),e&&t.close(),this.encoder.encodeQueueSize>=4&&await new Promise(i=>this.encoder.addEventListener("dequeue",i,{once:!0})),await this.lastMuxerPromise}}finally{e&&t.close()}}async doPcmEncoding(t,e){h(this.outputSampleSize),h(this.writeOutputValue);let{numberOfChannels:r,numberOfFrames:i,sampleRate:a,timestamp:s}=t,o=2048,c=[];for(let d=0;d<i;d+=o){let f=Math.min(o,t.numberOfFrames-d),p=f*r*this.outputSampleSize,b=new ArrayBuffer(p),g=new DataView(b);c.push({frameCount:f,view:g})}let u=t.allocationSize({planeIndex:0,format:"f32-planar"}),l=new Float32Array(u/Float32Array.BYTES_PER_ELEMENT);for(let d=0;d<r;d++){t.copyTo(l,{planeIndex:d,format:"f32-planar"});for(let f=0;f<c.length;f++){let{frameCount:p,view:b}=c[f];for(let g=0;g<p;g++)this.writeOutputValue(b,(g*r+d)*this.outputSampleSize,l[f*o+g])}}e&&t.close();let m={decoderConfig:{codec:this.encodingConfig.codec,numberOfChannels:r,sampleRate:a}};for(let d=0;d<c.length;d++){let{frameCount:f,view:p}=c[d],b=p.buffer,g=d*o,y=new Q(new Uint8Array(b),"key",s+g/a,f/a);this.encodingConfig.onEncodedPacket?.(y,m),await this.muxer.addEncodedAudioPacket(this.source._connectedTrack,y,m)}}ensureEncoder(t){this.ensureEncoderPromise=(async()=>{let{numberOfChannels:e,sampleRate:r}=t,i=Wc({numberOfChannels:e,sampleRate:r,...this.encodingConfig});this.encodingConfig.onEncoderConfig?.(i);let a=qi.find(s=>s.supports(this.encodingConfig.codec,i));if(a)this.customEncoder=new a,this.customEncoder.codec=this.encodingConfig.codec,this.customEncoder.config=i,this.customEncoder.onPacket=(s,o)=>{if(!(s instanceof Q))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.lastMuxerPromise=this.muxer.addEncodedAudioPacket(this.source._connectedTrack,s,o).catch(c=>{this.error??=c})},await this.customEncoder.init();else if(ee.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(i)).supported)throw new Error(`This specific encoder configuration (${i.codec}, ${i.bitrate} bps, ${i.numberOfChannels} channels, ${i.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 m=!1;if(!u.decoderConfig.description||u.decoderConfig.description.byteLength<2?m=!0:m=At(j(u.decoderConfig.description)).objectType===0,m){let d=Number(X(i.codec.split(".")));u.decoderConfig.description=hi({objectType:d,numberOfChannels:u.decoderConfig.numberOfChannels,sampleRate:u.decoderConfig.sampleRate})}}let l=Q.fromEncodedChunk(c);l=l.clone({timestamp:Tt(l.timestamp,i.sampleRate),duration:c.duration!=null?Tt(l.duration,i.sampleRate):void 0}),this.encodingConfig.onEncodedPacket?.(l,u),this.lastMuxerPromise=this.muxer.addEncodedAudioPacket(this.source._connectedTrack,l,u).catch(m=>{this.error??=m})},error:c=>{c.stack=o,this.error??=c}}),this.encoder.configure(i)}h(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:i}=Ae(t);switch(this.outputSampleSize=r,r){case 1:e==="unsigned"?this.writeOutputValue=(a,s,o)=>a.setUint8(s,ue((o+1)*127.5,0,255)):e==="signed"?this.writeOutputValue=(a,s,o)=>{a.setInt8(s,ue(Math.round(o*128),-128,127))}:e==="ulaw"?this.writeOutputValue=(a,s,o)=>{let c=ue(Math.floor(o*32767),-32768,32767);a.setUint8(s,Cd(c))}:e==="alaw"?this.writeOutputValue=(a,s,o)=>{let c=ue(Math.floor(o*32767),-32768,32767);a.setUint8(s,Ed(c))}:h(!1);break;case 2:e==="unsigned"?this.writeOutputValue=(a,s,o)=>a.setUint16(s,ue((o+1)*32767.5,0,65535),i):e==="signed"?this.writeOutputValue=(a,s,o)=>a.setInt16(s,ue(Math.round(o*32767),-32768,32767),i):h(!1);break;case 3:e==="unsigned"?this.writeOutputValue=(a,s,o)=>zr(a,s,ue((o+1)*83886075e-1,0,16777215),i):e==="signed"?this.writeOutputValue=(a,s,o)=>vu(a,s,ue(Math.round(o*8388607),-8388608,8388607),i):h(!1);break;case 4:e==="unsigned"?this.writeOutputValue=(a,s,o)=>a.setUint32(s,ue((o+1)*21474836475e-1,0,4294967295),i):e==="signed"?this.writeOutputValue=(a,s,o)=>a.setInt32(s,ue(Math.round(o*2147483647),-2147483648,2147483647),i):e==="float"?this.writeOutputValue=(a,s,o)=>a.setFloat32(s,o,i):h(!1);break;case 8:e==="float"?this.writeOutputValue=(a,s,o)=>a.setFloat64(s,o,i):h(!1);break;default:ne(r),h(!1)}}async flushAndClose(t){t||this.checkForEncoderError(),!t&&this.resampler&&await this.resampler.finalize(),this.resampler=null,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}},ci=class extends Ft{constructor(t){Xs(t),super(t.codec),this._encoder=new sa(this,t)}add(t){if(!(t instanceof be))throw new TypeError("audioSample must be an AudioSample.");return this._encoder.add(t,!1)}_flushAndClose(t){return this._encoder.flushAndClose(t)}},To=class extends Ft{constructor(e){Xs(e);super(e.codec);this._accumulatedTime=0;this._encoder=new sa(this,e)}async add(e){if(!(e instanceof AudioBuffer))throw new TypeError("audioBuffer must be an AudioBuffer.");let r=be._fromAudioBuffer(e,this._accumulatedTime);this._accumulatedTime+=e.duration;for(let i of r)await this._encoder.add(i,!0)}_flushAndClose(e){return this._encoder.flushAndClose(e)}},wo=class extends Ft{constructor(e,r,i={}){if(!(e instanceof MediaStreamTrack)||e.kind!=="audio")throw new TypeError("track must be an audio MediaStreamTrack.");if(Xs(r),typeof i!="object"||!i)throw new TypeError("options must be an object.");if(i.timestampBase!==void 0&&i.timestampBase!=="synced-zero"&&i.timestampBase!=="zero"&&i.timestampBase!=="unix")throw new TypeError("options.timestampBase, when provided, must be one of 'synced-zero', 'zero', or 'unix'.");super(r.codec);this._abortController=null;this._audioContext=null;this._scriptProcessorNode=null;this._promiseWithResolvers=Z();this._errorPromiseAccessed=!1;this._paused=!1;this._options=i,this._encoder=new sa(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 MediaStreamAudioTrackSource, so that any internal errors get bubbled up properly."),this._abortController=new AbortController;let e=null,r=!1,i=null,a=0,s=o=>{if(r){o.close();return}let c=o.timestamp;if(this._paused){if(e!==null){if(i!==null&&this._options.timestampBase!=="unix"){let l=c-i;a-=l}i=c}o.close();return}if(e===null){e=o.timestamp;let u,l=this._options.timestampBase??"synced-zero";if(l==="unix")u=Date.now()/1e3;else if(l==="zero")u=0;else{let m=this._connectedTrack.output;m._firstMediaStreamTimestamp===null?(m._firstMediaStreamTimestamp=performance.now()/1e3,u=0):u=performance.now()/1e3-m._firstMediaStreamTimestamp}a=u-e}if(i=c,this._encoder.getQueueSize()>=8){o.close();return}o.setTimestamp(c+a),this._encoder.add(o,!0).catch(u=>{r=!0,this._abortController?.abort(),this._promiseWithResolvers.reject(u),this._audioContext?.suspend()})};if(typeof MediaStreamTrackProcessor<"u"){let o=new MediaStreamTrackProcessor({track:this._track}),c=new WritableStream({write:u=>s(new be(u))});o.readable.pipeTo(c,{signal:this._abortController.signal}).catch(u=>{u instanceof DOMException&&u.name==="AbortError"||this._promiseWithResolvers.reject(u)})}else{let o=window.AudioContext||window.webkitAudioContext;this._audioContext=new o({sampleRate:this._track.getSettings().sampleRate});let c=this._audioContext.createMediaStreamSource(new MediaStream([this._track]));this._scriptProcessorNode=this._audioContext.createScriptProcessor(4096),this._audioContext.state==="suspended"&&await this._audioContext.resume(),c.connect(this._scriptProcessorNode),this._scriptProcessorNode.connect(this._audioContext.destination);let u=0;this._scriptProcessorNode.onaudioprocess=l=>{let m=be._fromAudioBuffer(l.inputBuffer,u);u+=l.inputBuffer.duration;for(let d of m)s(d)}}}pause(){this._paused=!0}resume(){this._paused=!1}async _flushAndClose(e){this._abortController&&(this._abortController.abort(),this._abortController=null),this._audioContext&&(h(this._scriptProcessorNode),this._scriptProcessorNode.disconnect(),await this._audioContext.suspend()),await this._encoder.flushAndClose(e)}},Vp=()=>{let n=(r,i)=>{i?self.postMessage(r,{transfer:i}):self.postMessage(r)};n({type:"support",supported:typeof MediaStreamTrackProcessor<"u"});let t=new Map,e=new Map;self.addEventListener("message",r=>{let i=r.data;switch(i.type){case"videoTrack":{e.set(i.trackId,i.track);let a=new MediaStreamTrackProcessor({track:i.track}),s=new WritableStream({write:c=>{if(!e.has(i.trackId)){c.close();return}n({type:"videoFrame",trackId:i.trackId,videoFrame:c},[c])}}),o=new AbortController;t.set(i.trackId,o),a.readable.pipeTo(s,{signal:o.signal}).catch(c=>{c instanceof DOMException&&c.name==="AbortError"||n({type:"error",trackId:i.trackId,error:c})})}break;case"stopTrack":{let a=t.get(i.trackId);a&&(a.abort(),t.delete(i.trackId)),e.get(i.trackId)?.stop(),e.delete(i.trackId),n({type:"trackStopped",trackId:i.trackId})}break;default:ne(i)}})},Up=0,Ye=null,zp=()=>{let n=new Blob([`(${Vp.toString()})()`],{type:"application/javascript"}),t=URL.createObjectURL(n);Ye=new Worker(t)},cu=null,Np=async()=>cu!==null?cu:(Ye||zp(),new Promise(n=>{h(Ye);let t=e=>{let r=e.data;r.type==="support"&&(cu=r.supported,Ye.removeEventListener("message",t),n(r.supported))};Ye.addEventListener("message",t)})),uu=(n,t)=>{h(Ye),t?Ye.postMessage(n,t):Ye.postMessage(n)},ui=class extends si{constructor(e){super();this._connectedTrack=null;if(!Fe.includes(e))throw new TypeError(`Invalid subtitle codec '${e}'. Must be one of: ${Fe.join(", ")}.`);this._codec=e}},So=class extends ui{constructor(e){super(e);this._error=null;this._lastMuxerPromise=Promise.resolve();this._parser=new io({codec:e,output:(r,i)=>{this._lastMuxerPromise=this._connectedTrack.output._muxer.addSubtitleCue(this._connectedTrack,r,i).catch(a=>{this._error??=a})}})}add(e){if(typeof e!="string")throw new TypeError("text must be a string.");return this._checkForError(),this._ensureValidAdd(),this._parser.parse(e),this._lastMuxerPromise}_checkForError(){if(this._error)throw this._error}async _flushAndClose(e){e||this._checkForError()}};var Po=class extends ye{constructor(e,r){if(!(e._target instanceof ze))throw new TypeError("HLS outputs require `OutputOptions.target` to be a PathedTarget.");super(e);this.trackDatas=[];this.isRelativeToUnixEpoch=!1;this.numWrittenMasterPlaylists=0;this.playlists=[];this.playlistDeclarations=[];this.format=r,this.targetSegmentDuration=r._options.targetDuration??2,this.singleFilePerPlaylist=r._options.singleFilePerPlaylist??!1,this.isLive=r._options.live??!1,this.maxLiveSegmentCount=r._options.maxLiveSegmentCount??1/0,this.globalTargetDuration=this.targetSegmentDuration,this.getPlaylistPath=r._options.getPlaylistPath??(({n:i})=>`playlist-${i}.m3u8`),this.getSegmentPath=r._options.getSegmentPath??(i=>i.isSingleFile?`segments-${i.playlist.n}${i.format.fileExtension}`:`segment-${i.playlist.n}-${i.n}${i.format.fileExtension}`),this.getInitPath=r._options.getInitPath??(i=>`init-${i.n}${i.segmentFormat.fileExtension}`)}async start(){let e=await this.mutex.acquire(),r=this.output._tracks.some(y=>y.metadata.isRelativeToUnixEpoch),i=this.output._tracks.some(y=>!y.metadata.isRelativeToUnixEpoch);if(r&&i)throw new Error("All tracks must agree on `relativeToUnixEpoch`: some tracks are relative to the Unix epoch and some are not.");this.isRelativeToUnixEpoch=r;let a=new Map,s=[],o=!1,c=!1,u=!1;for(let y of this.output._tracks){y.type==="video"&&(o=!0);let k=new Map;for(let w of this.output._tracks){if(y===w||!y.canBePairedWith(w))continue;if(y.type===w.type){c||(console.warn(`Illegal pairing of two ${y.type} tracks detected, which is not possible in HLS; treating them as unpaired.`),c=!0);continue}if(y.isVideoTrack()&&y.metadata.hasOnlyKeyPackets||w.isVideoTrack()&&w.metadata.hasOnlyKeyPackets){u||(console.warn("A key-packets-only video track is pairable with another track, which is not possible in HLS; treating them as unpaired."),u=!0);continue}let T=k.get(w.source._codec);T||k.set(w.source._codec,T=[]),T.push(w)}for(let[,w]of k){let T=w.map(P=>P.id).join("-");s.find(P=>P.key===T)||s.push({name:w[0].type+"-"+(s.length+1),key:T,tracks:w,needsEmit:!1,firstNoUri:!1});let x=a.get(y);x||a.set(y,x=[]),x.push(T)}}let l=o?"video":"audio",m=[],d=[],f=[];for(let y of this.output._tracks){let k=a.get(y);if(k){if(h(k.length>0),y.type!==l)continue;for(let w of k){let T=s.find(S=>S.key===w);if(h(T),k.length===1&&T.tracks.length===1){let S=a.get(T.tracks[0]);if(h(S!==void 0),S.length===1){let x=s.find(P=>P.key===S[0]);if(x.tracks.length===1){h(x.tracks[0]===y),m.push({tracks:[y,T.tracks[0]],linkedGroup:null});continue}}}m.push({tracks:[y],linkedGroup:T}),T.needsEmit=!0}}else y.type==="video"?d.push(y):y.type==="audio"&&f.push(y)}let p=({metadata:y})=>{let k="";return k+=`${y.languageCode??J}-`,k+=`${y.name??""}-`,k+=`${y.disposition?.default??!0}-`,k+=`${y.disposition?.primary??!1}-`,k+=`${y.disposition?.forced??!1}-`,k};if(d.length>0)if(new Set(d.map(p)).size>1){let k={key:d.map(w=>w.id).join("-"),name:"video-"+(s.length+1),tracks:d,needsEmit:!0,firstNoUri:!0};s.push(k),m.push({tracks:[d[0]],linkedGroup:k})}else for(let k of d)m.push({tracks:[k],linkedGroup:null});if(f.length>0)if(new Set(f.map(p)).size>1){let k={key:f.map(w=>w.id).join("-"),name:"audio-"+(s.length+1),tracks:f,needsEmit:!0,firstNoUri:!0};s.push(k),m.push({tracks:[f[0]],linkedGroup:k})}else for(let k of f)m.push({tracks:[k],linkedGroup:null});let b=y=>{let k=[],w=0,T=0,S=!1,x=null,P=-1/0;for(let A of y)A.isVideoTrack()?(w++,S||=(A.metadata.rotation??0)!==0):A.isAudioTrack()&&T++,k.push(A.source._codec);for(let A of Nt(this.format._options.segmentFormat)){let C=A.getSupportedCodecs(),I=A.getSupportedTrackCounts();if(k.some(v=>!C.includes(v))||w<I.video.min||w>I.video.max||T<I.audio.min||T>I.audio.max)continue;let R=0;S&&A.supportsVideoRotationMetadata&&R++,R>P&&(x=A,P=R)}return h(x),x},g=async y=>{if(y.some(x=>this.playlists.some(P=>P.tracks.includes(x))))throw new Error("Internal error: track is already registered in a playlist.");let k=b(y),w=this.playlists.length+1,T=await this.getPlaylistPath({n:w,tracks:y,segmentFormat:k});Lp(T);let S={id:this.playlists.length+1,path:T,tracks:y,segmentFormat:k,currentSegmentStartTimestamp:null,currentSegmentStartTimestampIsFixed:!1,nextSegmentId:1,initSegment:null,writtenSegments:[],peakBitrate:null,averageBitrate:null,mediaSequence:0,done:!1,singleFile:null,mutex:new ve};return this.playlists.push(S),S};for(let y of s)if(y.needsEmit)for(let k=0;k<y.tracks.length;k++){let w=y.tracks[k],T=this.playlists.find(S=>S.tracks[0].id===w.id);T??=await g([w]),this.playlistDeclarations.push({playlist:T,groupId:y.name,noUri:y.firstNoUri&&k===0,references:[]})}for(let y of m){let k=this.playlists.find(w=>w.tracks[0].id===y.tracks[0].id);k??=await g(y.tracks),this.playlistDeclarations.push({playlist:k,groupId:null,noUri:!1,references:y.linkedGroup?this.playlistDeclarations.filter(w=>w.groupId===y.linkedGroup.name):[]})}e()}async getMimeType(){return xt}allTracksAreKnown(e){for(let r of e.tracks)if(!r.source._closed&&!this.trackDatas.some(i=>i.track===r))return!1;return!0}async onTrackClose(e){let r=this.trackDatas.find(s=>s.track===e);r&&(r.closed=!0);let i=this.playlists.find(s=>s.tracks.includes(e));h(i);let a=await i.mutex.acquire();try{await this.advancePlaylist(i)}finally{a()}}getVideoTrackData(e,r){let i=this.trackDatas.find(s=>s.track===e);if(i)return i;cr(r),h(r),h(r?.decoderConfig);let a=this.playlists.filter(s=>s.tracks.includes(e));return h(a.length===1),i={track:e,packets:[],playlist:a[0],closed:!1,info:{type:"video",decoderConfig:r.decoderConfig}},this.trackDatas.push(i),i}getAudioTrackData(e,r){let i=this.trackDatas.find(s=>s.track===e);if(i)return i;_e(r),h(r),h(r?.decoderConfig);let a=this.playlists.filter(s=>s.tracks.includes(e));return h(a.length===1),i={track:e,packets:[],playlist:a[0],closed:!1,info:{type:"audio",decoderConfig:r.decoderConfig}},this.trackDatas.push(i),i}async addEncodedVideoPacket(e,r,i){let a=this.getVideoTrackData(e,i),s=a.playlist,o=await s.mutex.acquire();try{this.validateTimestamp(e,r.timestamp,r.type==="key"),a.packets.push(r),s.currentSegmentStartTimestamp===null?s.currentSegmentStartTimestamp=r.timestamp:s.currentSegmentStartTimestampIsFixed||(s.currentSegmentStartTimestamp=Math.min(s.currentSegmentStartTimestamp,r.timestamp)),await this.advancePlaylist(s)}finally{o()}}async addEncodedAudioPacket(e,r,i){let a=this.getAudioTrackData(e,i),s=a.playlist,o=await s.mutex.acquire();try{this.validateTimestamp(e,r.timestamp,r.type==="key"),a.packets.push(r),s.currentSegmentStartTimestamp===null?s.currentSegmentStartTimestamp=r.timestamp:s.currentSegmentStartTimestampIsFixed||(s.currentSegmentStartTimestamp=Math.min(s.currentSegmentStartTimestamp,r.timestamp)),await this.advancePlaylist(s)}finally{o()}}async addSubtitleCue(e,r,i){throw new Error("Unreachable.")}async advancePlaylist(e){if(h(!e.done),!this.allTracksAreKnown(e))return;if(e.currentSegmentStartTimestamp===null){await this.onPlaylistDone(e);return}let r=this.trackDatas.filter(s=>e.tracks.includes(s.track)),i=r.find(s=>s.info.type==="video"),a=r.find(s=>s.info.type==="audio");for(;;){let s=e.currentSegmentStartTimestamp+this.targetSegmentDuration,o=0,c=0;if(i&&(!i.closed||i.packets.length>0)){let T=i.packets.every(P=>P.timestamp<s),S=null,x=null;if(T){if(!i.closed)return}else for(let P=0;P<i.packets.length;P++){let A=i.packets[P];if(S!==null&&A.timestamp>s)break;P>0&&A.type==="key"&&(S=A,x=P)}if(x!==null){if(o=x,a){let P=a.packets.findIndex(A=>A.timestamp>=S.timestamp);if(P!==-1)c=P;else if(a.closed)c=a.packets.length;else return}}else{if(!i.closed)return;o=i.packets.length;let P=Uu(i.packets,C=>C.timestamp),A=i.packets[P];if(h(A),a)if(A.timestamp<s){let C=a.packets.findIndex(I=>I.timestamp>=s);if(C!==-1)c=C;else if(a.closed)c=a.packets.length;else return}else{let C=a.packets.findIndex(I=>I.timestamp>A.timestamp);if(C!==-1)c=C;else if(a.closed)c=a.packets.length;else return}}}else if(a&&(!a.closed||a.packets.length>0))if(a.packets.every(S=>S.timestamp<s))if(a.closed)c=a.packets.length;else return;else{let S=ar(a.packets,x=>x.timestamp<=s);c=Math.max(S,1)}if(o===0&&c===0){r.every(S=>S.closed)&&await this.onPlaylistDone(e);return}let u=null,l,m;h(this.output._target instanceof ze);let d=this.output._target;if(this.singleFilePerPlaylist)if(e.singleFile===null){let T={n:e.nextSegmentId,format:e.segmentFormat,isSingleFile:!0,playlist:xo(e)};l=await this.getSegmentPath(T),dm(l),m=fe(fe(d.rootPath,e.path),l);let S=await this.output._getTarget({path:m,isRoot:!1,mimeType:e.segmentFormat.mimeType});S._start(),e.singleFile={target:S,path:l,nextOffset:0,info:T}}else l=e.singleFile.path,m=fe(fe(d.rootPath,e.path),l);else u={n:e.nextSegmentId,format:e.segmentFormat,isSingleFile:!1,playlist:xo(e)},l=await this.getSegmentPath(u),dm(l),m=fe(fe(d.rootPath,e.path),l),e.nextSegmentId++;let f=0,p=null,b=new ir({format:e.segmentFormat,target:new ze(m,async T=>{let S={...T,isRoot:!1};if(T.isRoot)if(e.singleFile){let x=e.singleFile.target.slice(e.singleFile.nextOffset);return x.on("write",({end:P})=>f=Math.max(f,P)),x}else{let x=await this.output._getTarget(S);return p=x,x.on("write",({end:P})=>f=Math.max(f,P)),x}return this.output._getTarget(S)}),initTarget:async()=>{if(e.initSegment)return new Fr;if(e.singleFile){e.initSegment={path:e.singleFile.path,duration:0,timestamp:0,byteSize:0,byteOffset:0,info:null};let T=e.singleFile.target.slice(e.singleFile.nextOffset);return T.on("write",({end:S})=>{e.initSegment.byteSize=Math.max(e.initSegment.byteSize,S)}),T.on("finalized",()=>{e.singleFile.nextOffset=e.initSegment.byteSize}),T}else{let T=xo(e),S=await this.getInitPath(T);Wp(S),e.initSegment={path:S,duration:0,timestamp:0,byteSize:0,byteOffset:null,info:null};let x=fe(fe(d.rootPath,e.path),S),P=await this.output._getTarget({path:x,isRoot:!1,mimeType:e.segmentFormat.mimeType});return P.on("write",({end:A})=>{e.initSegment.byteSize=Math.max(e.initSegment.byteSize,A)}),P.on("finalized",()=>{this.format._options.onInit?.(P,T)}),P}}}),g=-1/0;try{let T=null,S=null;if(i&&(T=new Mr(i.track.source._codec),b.addVideoTrack(T,i.track.metadata)),a&&(S=new Br(a.track.source._codec),b.addAudioTrack(S,a.track.metadata)),await b.start(),i){h(T);let x={decoderConfig:i.info.decoderConfig};for(let P=0;P<o;P++){let A=i.packets[P];await T.add(A,x),g=Math.max(g,A.timestamp+A.duration)}}if(a){h(S);let x={decoderConfig:a.info.decoderConfig};for(let P=0;P<c;P++){let A=a.packets[P];await S.add(A,x),g=Math.max(g,A.timestamp+A.duration)}}await b.finalize()}catch(T){throw await b.cancel(),T}u&&(h(p),this.format._options.onSegment?.(p,u)),o>0&&(h(i),i.packets.splice(0,o)),c>0&&(h(a),a.packets.splice(0,c));let y=1/0;i&&i.packets.length>0&&(y=i.packets[0].timestamp),a&&a.packets.length>0&&(y=Math.min(y,a.packets[0].timestamp));let k=y<1/0?y:g;h(Number.isFinite(k));let w=k-e.currentSegmentStartTimestamp;if(h(w>=0),e.writtenSegments.push({path:l,duration:w,timestamp:e.currentSegmentStartTimestamp,byteSize:f,byteOffset:e.singleFile?e.singleFile.nextOffset:null,info:u??null}),this.globalTargetDuration=Math.max(this.globalTargetDuration,w),e.currentSegmentStartTimestamp=k,e.currentSegmentStartTimestampIsFixed=!0,e.singleFile&&(e.singleFile.nextOffset+=f),this.isLive){for(;e.writtenSegments.length>this.maxLiveSegmentCount;){let T=e.writtenSegments.shift();e.mediaSequence++,this.singleFilePerPlaylist||(h(T.info),this.format._options.onSegmentPopped?.(T.path,T.info))}await this.writePlaylist(e),await this.tryWriteMasterPlaylist()}}}async onPlaylistDone(e){h(!e.done),e.done=!0,e.singleFile&&(await e.singleFile.target._flush(),await e.singleFile.target._finalize(),this.format._options.onSegment?.(e.singleFile.target,e.singleFile.info)),await this.writePlaylist(e),this.isLive&&e.writtenSegments.length===0&&await this.tryWriteMasterPlaylist()}updatePlaylistBitrates(e){let r=e.writtenSegments,i=0,a=0,s=0;for(let o=0;o<r.length;o++){s+=r[o].duration;let c=0,u=0;for(let l=o;l<r.length&&(c+=r[l].byteSize,u+=r[l].duration,u>=.5*this.globalTargetDuration&&u<=1.5*this.globalTargetDuration&&(i=Math.max(i,8*c/u)),!(u>1.5*this.globalTargetDuration));l++);}if(i===0)for(let o of r){let c=o.duration||1;i=Math.max(i,8*o.byteSize/c)}for(let o of r)a+=8*o.byteSize;e.peakBitrate=i,e.averageBitrate=a/(s||1)}async writePlaylist(e){h(this.output._target instanceof ze);let r=this.output._target;this.updatePlaylistBitrates(e);let i=!1;for(let d of e.writtenSegments)i||=d.byteOffset!==null;let a=e.tracks[0].isVideoTrack()&&e.tracks[0].metadata.hasOnlyKeyPackets,s=3;(a||i)&&(s=4),e.initSegment&&(s=5),e.initSegment&&!a&&(s=6);let o=this.isLive?this.targetSegmentDuration:this.globalTargetDuration,c=fe(r.rootPath,e.path),u=`#EXTM3U
#EXT-X-VERSION:${s}
`+(this.isLive?"":`#EXT-X-PLAYLIST-TYPE:VOD
`)+`#EXT-X-TARGETDURATION:${Math.ceil(o)}
`+(Number.isFinite(this.maxLiveSegmentCount)?`#EXT-X-MEDIA-SEQUENCE:${e.mediaSequence}
`:"")+`#EXT-X-INDEPENDENT-SEGMENTS
`+(a?`#EXT-X-I-FRAMES-ONLY
`:"")+(e.initSegment?`#EXT-X-MAP:URI="${e.initSegment.path}"`+(e.initSegment.byteOffset!==null?`,BYTERANGE="${e.initSegment.byteSize}@${e.initSegment.byteOffset}"`:"")+`
`:"")+`
`+e.writtenSegments.map(d=>`#EXTINF:${+d.duration.toFixed(12)},
`+(this.isRelativeToUnixEpoch?`#EXT-X-PROGRAM-DATE-TIME:${new Date(1e3*d.timestamp).toISOString()}
`:"")+(d.byteOffset!==null?`#EXT-X-BYTERANGE:${d.byteSize}@${d.byteOffset}
`:"")+`${d.path}
`).join("")+(e.done?(e.writtenSegments.length>0?`
`:"")+`#EXT-X-ENDLIST
`:"");this.format._options.onPlaylist?.(u,xo(e));let l=await this.output._getTarget({path:c,isRoot:!1,mimeType:xt}),m=new _t(l,!0);m.start(),m.write($.encode(u)),await m.flush(),await m.finalize()}async writeMasterPlaylist(){h(this.output._target instanceof ze);let e=this.output._target,r=`#EXTM3U
`,i=!1,a=null,s=0,o=!1;for(let u of this.playlistDeclarations)if(u.groupId===null){let l=u.playlist.tracks[0].isVideoTrack()&&u.playlist.tracks[0].metadata.hasOnlyKeyPackets,m=[];for(let y of u.playlist.tracks){let w=this.trackDatas.find(T=>T.track===y)?.info.decoderConfig.codec??y.source._codec;m.push(w)}let d=0,f=0;if(u.references.length>0){let k=u.references[0].playlist.tracks[0],T=this.trackDatas.find(S=>S.track===k)?.info.decoderConfig.codec??k.source._codec;m.push(T);for(let S of u.references)h(S.playlist.peakBitrate!==null),d=Math.max(d,S.playlist.peakBitrate),f=Math.max(f,S.playlist.averageBitrate??0)}h(u.playlist.peakBitrate!==null);let p=u.playlist.peakBitrate+d,b=(u.playlist.averageBitrate??0)+f;i||(r+=`
`,i=!0),l?r+="#EXT-X-I-FRAME-STREAM-INF:":r+="#EXT-X-STREAM-INF:",r+=`BANDWIDTH=${Math.ceil(p)}`,b>0&&(r+=`,AVERAGE-BANDWIDTH=${Math.ceil(b)}`),r+=`,CODECS="${m.join(",")}"`;let g=u.playlist.tracks.find(y=>y.isVideoTrack());if(g?.isVideoTrack()){let k=this.trackDatas.find(w=>w.track===g)?.info.decoderConfig;if(k){let w=k.displayAspectWidth??k.codedWidth,T=k.displayAspectHeight??k.codedHeight;w!==void 0&&T!==void 0&&(g.metadata.rotation!==void 0&&g.metadata.rotation%180===90&&([w,T]=[T,w]),r+=`,RESOLUTION=${w}x${T}`)}!l&&g.metadata.frameRate!==void 0&&(r+=`,FRAME-RATE=${+g.metadata.frameRate.toFixed(3)}`)}if(!l){let y=new Map;for(let k of u.references){h(k.groupId!==null);let w=k.playlist.tracks[0].type;y.set(w,k.groupId)}for(let[k,w]of y)r+=`,${k.toUpperCase()}="${w}"`}l?(r+=`,URI="${u.playlist.path}"`,r+=`
`):(r+=`
`,r+=`${u.playlist.path}
`)}else{h(u.playlist.tracks.length===1);let l=u.playlist.tracks[0],m=l.type,d=l.metadata.name??null,f=l.metadata.languageCode,p=l.metadata.disposition;(a===null||u.groupId!==a)&&(s=0,r+=`
`,o=!1),a=u.groupId,s++,r+=`#EXT-X-MEDIA:TYPE=${m.toUpperCase()},GROUP-ID="${u.groupId}"`,d!==null&&/[\n\r"]/.test(d)&&(console.warn("Dropping track name since it includes a line feed, carriage return, or double quote character, which are not allowed in HLS playlist attributes."),d=null),d??=`${f??u.groupId}-${s}`,r+=`,NAME="${d}"`,f!==void 0&&(r+=`,LANGUAGE="${f}"`);let b=p?.primary??!1,g=p?.default??!0,y=p?.forced??!1;if(b&&!o&&(r+=",DEFAULT=YES",o=!0),(b||g)&&(r+=",AUTOSELECT=YES"),y&&(r+=",FORCED=YES"),m==="audio"){let w=this.trackDatas.find(T=>T.track===l)?.info.decoderConfig;w&&(r+=`,CHANNELS="${w.numberOfChannels}"`)}u.noUri||(r+=`,URI="${u.playlist.path}"`),r+=`
`}this.format._options.onMaster?.(r);let c=await this.mutex.acquire();try{let u;if(this.numWrittenMasterPlaylists===0)u=await this.output._getRootWriter(!0);else{let l=await this.output._getTarget({path:e.rootPath,isRoot:!0,mimeType:xt});u=new _t(l,!0),u.start()}u.write($.encode(r)),await u.flush(),await u.finalize(),this.numWrittenMasterPlaylists++}finally{c()}}async tryWriteMasterPlaylist(){h(this.isLive);for(let e of this.playlists)if(e.writtenSegments.length===0&&!e.done)return;await this.writeMasterPlaylist()}async finalize(){(await Promise.all(this.playlists.map(r=>r.mutex.acquire()))).forEach(r=>r());for(let r of this.trackDatas)r.closed=!0;await Promise.all(this.playlists.map(r=>r.done?Promise.resolve():this.advancePlaylist(r))),this.isLive||await this.writeMasterPlaylist()}},Lp=n=>{if(typeof n!="string")throw new TypeError("options.getPlaylistPath must return or resolve to a string");if(/[\n\r"]/.test(n))throw new TypeError("Playlist paths cannot contain line feed, carriage return, or double quote characters.")},dm=n=>{if(typeof n!="string")throw new TypeError("options.getSegmentPath must return or resolve to a string");if(/[\n\r"]/.test(n))throw new TypeError("Segment paths cannot contain line feed or carriage return characters.")},Wp=n=>{if(typeof n!="string")throw new TypeError("options.getInitPath must return or resolve to a string");if(/[\n\r"]/.test(n))throw new TypeError("Init paths cannot contain line feed, carriage return, or double quote characters.")},xo=n=>({n:n.id,tracks:n.tracks,segmentFormat:n.segmentFormat});var Ee=class{getSupportedVideoCodecs(){return this.getSupportedCodecs().filter(t=>te.includes(t))}getSupportedAudioCodecs(){return this.getSupportedCodecs().filter(t=>ae.includes(t))}getSupportedSubtitleCodecs(){return this.getSupportedCodecs().filter(t=>Fe.includes(t))}_codecUnsupportedHint(t){return""}},li=class extends Ee{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 uo(t,this)}},di=class extends li{constructor(t){super(t)}get _name(){return"MP4"}get fileExtension(){return".mp4"}get mimeType(){return"video/mp4"}getSupportedCodecs(){return[...te,...nt,"pcm-s16","pcm-s16be","pcm-s24","pcm-s24be","pcm-s32","pcm-s32be","pcm-f32","pcm-f32be","pcm-f64","pcm-f64be",...Fe]}_codecUnsupportedHint(t){return new ii().getSupportedCodecs().includes(t)?" Switching to MOV will grant support for this codec.":""}},ri=class extends li{constructor(t){super(t)}get _name(){return"CMAF"}get fileExtension(){return".m4s"}get mimeType(){return"video/mp4"}getSupportedCodecs(){return[...te,...nt,"pcm-s16","pcm-s16be","pcm-s24","pcm-s24be","pcm-s32","pcm-s32be","pcm-f32","pcm-f32be","pcm-f64","pcm-f64be",...Fe]}},ii=class extends li{constructor(t){super(t)}get _name(){return"MOV"}get fileExtension(){return".mov"}get mimeType(){return"video/quicktime"}getSupportedCodecs(){return[...te,...ae]}_codecUnsupportedHint(t){return new di().getSupportedCodecs().includes(t)?" Switching to MP4 will grant support for this codec.":""}},en=class extends Ee{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 lo(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[...te,...nt,...ee.filter(t=>!["pcm-s8","pcm-f32be","pcm-f64be","ulaw","alaw"].includes(t)),...Fe]}get supportsVideoRotationMetadata(){return!1}get supportsTimestampedMediaData(){return!0}},ni=class extends en{constructor(t){super(t)}getSupportedCodecs(){return[...te.filter(t=>["vp8","vp9","av1"].includes(t)),...ae.filter(t=>["opus","vorbis"].includes(t)),...Fe]}get _name(){return"WebM"}get fileExtension(){return".webm"}get mimeType(){return"video/webm"}_codecUnsupportedHint(t){return new en().getSupportedCodecs().includes(t)?" Switching to MKV will grant support for this codec.":""}},Co=class extends Ee{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.xingHeader!==void 0&&typeof t.xingHeader!="boolean")throw new TypeError("options.xingHeader, when provided, must be a boolean.");if(t.onXingFrame!==void 0&&typeof t.onXingFrame!="function")throw new TypeError("options.onXingFrame, when provided, must be a function.");super(),this._options=t}_createMuxer(t){return new fo(t,this)}get _name(){return"MP3"}getSupportedTrackCounts(){return{video:{min:0,max:0},audio:{min:1,max:1},subtitle:{min:0,max:0},total:{min:1,max:1}}}get fileExtension(){return".mp3"}get mimeType(){return"audio/mpeg"}getSupportedCodecs(){return["mp3"]}get supportsVideoRotationMetadata(){return!1}get supportsTimestampedMediaData(){return!1}},Io=class extends Ee{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.large!==void 0&&typeof t.large!="boolean")throw new TypeError("options.large, when provided, must be a boolean.");if(t.metadataFormat!==void 0&&!["info","id3"].includes(t.metadataFormat))throw new TypeError("options.metadataFormat, when provided, must be either 'info' or 'id3'.");if(t.onHeader!==void 0&&typeof t.onHeader!="function")throw new TypeError("options.onHeader, when provided, must be a function.");super(),this._options=t}_createMuxer(t){return new bo(t,this)}get _name(){return"WAVE"}getSupportedTrackCounts(){return{video:{min:0,max:0},audio:{min:1,max:1},subtitle:{min:0,max:0},total:{min:1,max:1}}}get fileExtension(){return".wav"}get mimeType(){return"audio/wav"}getSupportedCodecs(){return[...ee.filter(t=>["pcm-s16","pcm-s24","pcm-s32","pcm-f32","pcm-u8","ulaw","alaw"].includes(t))]}get supportsVideoRotationMetadata(){return!1}get supportsTimestampedMediaData(){return!1}},Eo=class extends Ee{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.maximumPageDuration!==void 0&&(!Number.isFinite(t.maximumPageDuration)||t.maximumPageDuration<=0))throw new TypeError("options.maximumPageDuration, when provided, must be a positive number.");if(t.onPage!==void 0&&typeof t.onPage!="function")throw new TypeError("options.onPage, when provided, must be a function.");super(),this._options=t}_createMuxer(t){return new po(t,this)}get _name(){return"Ogg"}getSupportedTrackCounts(){return{video:{min:0,max:0},audio:{min:0,max:4294967296},subtitle:{min:0,max:0},total:{min:1,max:4294967296}}}get fileExtension(){return".ogg"}get mimeType(){return"application/ogg"}getSupportedCodecs(){return[...ae.filter(t=>["vorbis","opus"].includes(t))]}get supportsVideoRotationMetadata(){return!1}get supportsTimestampedMediaData(){return!1}},vo=class extends Ee{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.onFrame!==void 0&&typeof t.onFrame!="function")throw new TypeError("options.onFrame, when provided, must be a function.");super(),this._options=t}_createMuxer(t){return new to(t,this)}get _name(){return"ADTS"}getSupportedTrackCounts(){return{video:{min:0,max:0},audio:{min:1,max:1},subtitle:{min:0,max:0},total:{min:1,max:1}}}get fileExtension(){return".aac"}get mimeType(){return"audio/aac"}getSupportedCodecs(){return["aac"]}get supportsVideoRotationMetadata(){return!1}get supportsTimestampedMediaData(){return!1}},_o=class extends Ee{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.");super(),this._options=t}_createMuxer(t){return new ro(t,this)}get _name(){return"FLAC"}getSupportedTrackCounts(){return{video:{min:0,max:0},audio:{min:1,max:1},subtitle:{min:0,max:0},total:{min:1,max:1}}}get fileExtension(){return".flac"}get mimeType(){return"audio/flac"}getSupportedCodecs(){return["flac"]}get supportsVideoRotationMetadata(){return!1}get supportsTimestampedMediaData(){return!1}},Ro=class extends Ee{constructor(t={}){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(t.onPacket!==void 0&&typeof t.onPacket!="function")throw new TypeError("options.onPacket, when provided, must be a function.");super(),this._options=t}_createMuxer(t){return new ho(t,this)}get _name(){return"MPEG-TS"}getSupportedTrackCounts(){return{video:{min:0,max:16},audio:{min:0,max:32},subtitle:{min:0,max:0},total:{min:1,max:48}}}get fileExtension(){return".ts"}get mimeType(){return"video/MP2T"}getSupportedCodecs(){return[...te.filter(t=>["avc","hevc"].includes(t)),...ae.filter(t=>["aac","mp3","ac3","eac3"].includes(t))]}get supportsVideoRotationMetadata(){return!1}get supportsTimestampedMediaData(){return!0}},Fo=class extends Ee{constructor(t){if(!t||typeof t!="object")throw new TypeError("options must be an object.");if(!(t.segmentFormat instanceof Ee)&&(!Array.isArray(t.segmentFormat)||t.segmentFormat.length===0||!t.segmentFormat.every(e=>e instanceof Ee)))throw new TypeError("options.segmentFormat must be an OutputFormat or a non-empty array of OutputFormat instances.");if(t.targetDuration!==void 0&&(typeof t.targetDuration!="number"||t.targetDuration<=0))throw new TypeError("options.targetDuration, when provided, must be a positive number.");if(t.singleFilePerPlaylist!==void 0&&typeof t.singleFilePerPlaylist!="boolean")throw new TypeError("options.singleFilePerPlaylist, when provided, must be a boolean.");if(t.live!==void 0&&typeof t.live!="boolean")throw new TypeError("options.live, when provided, must be a boolean.");if(t.maxLiveSegmentCount!==void 0&&(typeof t.maxLiveSegmentCount!="number"||t.maxLiveSegmentCount<1||Number.isFinite(t.maxLiveSegmentCount)&&!Number.isInteger(t.maxLiveSegmentCount)))throw new TypeError("options.maxLiveSegmentCount, when provided, must be a positive integer or Infinity.");if(t.getPlaylistPath!==void 0&&typeof t.getPlaylistPath!="function")throw new TypeError("options.getPlaylistPath, when provided, must be a function.");if(t.getSegmentPath!==void 0&&typeof t.getSegmentPath!="function")throw new TypeError("options.getSegmentPath, when provided, must be a function.");if(t.getInitPath!==void 0&&typeof t.getInitPath!="function")throw new TypeError("options.getInitPath, when provided, must be a function.");if(t.onMaster!==void 0&&typeof t.onMaster!="function")throw new TypeError("options.onMaster, when provided, must be a function.");if(t.onPlaylist!==void 0&&typeof t.onPlaylist!="function")throw new TypeError("options.onPlaylist, when provided, must be a function.");if(t.onSegment!==void 0&&typeof t.onSegment!="function")throw new TypeError("options.onSegment, when provided, must be a function.");if(t.onInit!==void 0&&typeof t.onInit!="function")throw new TypeError("options.onInit, when provided, must be a function.");if(t.onSegmentPopped!==void 0&&typeof t.onSegmentPopped!="function")throw new TypeError("options.onSegmentPopped, when provided, must be a function.");super(),this._options=t}_createMuxer(t){return new Po(t,this)}get _name(){return"HTTP Live Streaming (HLS)"}get fileExtension(){return".m3u8"}get mimeType(){return xt}getSupportedCodecs(){return[...new Set(Nt(this._options.segmentFormat).flatMap(e=>e.getSupportedCodecs()))]}getSupportedTrackCounts(){let t=!1,e=!1,r=!1;for(let i of Nt(this._options.segmentFormat)){let a=i.getSupportedTrackCounts();t||=a.video.max>0,e||=a.audio.max>0,r||=a.subtitle.max>0}return{video:{min:0,max:t?1/0:0},audio:{min:0,max:e?1/0:0},subtitle:{min:0,max:0},total:{min:1,max:1/0}}}get supportsVideoRotationMetadata(){return Nt(this._options.segmentFormat).some(t=>t.supportsVideoRotationMetadata)}get supportsTimestampedMediaData(){return!0}_codecUnsupportedHint(t){return" Using different segment formats may grant support for this codec."}};var fu=["video","audio","subtitle"],mi=class n{constructor(t,e,r,i,a){this.id=t,this.output=e,this.type=r,this.source=i,this.metadata=a}isVideoTrack(){return this.type==="video"}isAudioTrack(){return this.type==="audio"}isSubtitleTrack(){return this.type==="subtitle"}canBePairedWith(t){if(!(t instanceof n))throw new TypeError("other must be an OutputTrack.");if(this===t)return!1;let e=Nt(this.metadata.group),r=Nt(t.metadata.group);for(let i of e)if(this.type!==t.type&&r.some(o=>i===o)||r.some(o=>i._pairedGroups.has(o)))return!0;return!1}},oa=class extends mi{constructor(t,e,r,i){super(t,e,"video",r,i)}},ca=class extends mi{constructor(t,e,r,i){super(t,e,"audio",r,i)}},ua=class extends mi{constructor(t,e,r,i){super(t,e,"subtitle",r,i)}},Ne=class n{constructor(){this._pairedGroups=new Set}pairWith(t){if(!(t instanceof n))throw new TypeError("other must be an OutputTrackGroup.");if(this===t)throw new TypeError("Cannot pair a group with itself.");this._pairedGroups.add(t),t._pairedGroups.add(this)}},mu=n=>{if(!n||typeof n!="object")throw new TypeError("metadata must be an object.");if(n.languageCode!==void 0&&!Ut(n.languageCode))throw new TypeError("metadata.languageCode, when provided, must be a three-letter, ISO 639-2/T language code.");if(n.name!==void 0&&typeof n.name!="string")throw new TypeError("metadata.name, when provided, must be a string.");if(n.disposition!==void 0&&Hu(n.disposition),n.maximumPacketCount!==void 0&&(!Number.isInteger(n.maximumPacketCount)||n.maximumPacketCount<0))throw new TypeError("metadata.maximumPacketCount, when provided, must be a non-negative integer.");if(n.group!==void 0&&!(n.group instanceof Ne)&&(!Array.isArray(n.group)||n.group.some(t=>!(t instanceof Ne))))throw new TypeError("metadata.group, when provided, must be an OutputTrackGroup instance or an array of OutputTrackGroup instances.")},ir=class extends Ge{constructor(e){super();this.state="pending";this.defaultTrackGroup=new Ne;this._onFinalize=null;this._unfinalizedTargets=new Set;this._rootWriterPromise=null;this._tracks=[];this._startPromise=null;this._cancelPromise=null;this._finalizePromise=null;this._mutex=new ve;this._metadataTags={};this._rootTarget=null;this._rootTargetPromise=null;this._firstMediaStreamTimestamp=null;if(!e||typeof e!="object")throw new TypeError("options must be an object.");if(!(e.format instanceof Ee))throw new TypeError("options.format must be an OutputFormat.");if(!(e.target instanceof Pe||e.target instanceof ze))throw new TypeError("options.target must be a Target or a PathedTarget.");if(e.target instanceof Pe&&this._rememberTarget(e.target),e.initTarget!==void 0&&!(e.initTarget instanceof Pe)&&typeof e.initTarget!="function")throw new Error("options.initTarget, when provided, must be a Target or a function that returns or resolves to a Target.");if(e.onFinalize!==void 0&&typeof e.onFinalize!="function")throw new TypeError("options.onFinalize, when provided, must be a function.");this.format=e.format,this._target=e.target,this._onFinalize=e.onFinalize??null,this._initTarget=e.initTarget??null,this._initTarget instanceof Pe&&this._rememberTarget(this._initTarget),this._muxer=e.format._createMuxer(this)}get target(){let e="Output.target cannot be used when using PathedTarget with an async callback. Use the 'target' event instead.";if(this._rootTargetPromise)throw new TypeError(e);let r=this._getRootTarget();if(r instanceof Promise)throw new TypeError(e);return r}_getTargetValidated(e){h(this._target instanceof ze);let r=this._target.getTarget(e),i=a=>{if(!(a instanceof Pe))throw new TypeError("getTarget must return a Target.");return a};return r instanceof Promise?r.then(i):i(r)}async _getTarget(e){h(this._target instanceof ze);let r=await this._getTargetValidated(e);return this._emit("target",{target:r,request:e,isRoot:e.isRoot}),this.state==="canceled"?await r._close():this._rememberTarget(r),r}_rememberTarget(e){this._unfinalizedTargets.add(e),e.on("finalized",()=>this._unfinalizedTargets.delete(e),{once:!0})}async _getInitTarget(){if(h(this._initTarget!==null),this._initTarget instanceof Pe)return this._initTarget;let e=await this._initTarget();return this.state==="canceled"?await e._close():this._rememberTarget(e),e}_hasInitTarget(){return this._initTarget!==null}_getRootTarget(){if(this._rootTarget)return this._rootTarget;if(this._rootTargetPromise)return this._rootTargetPromise;if(this._target instanceof Pe)return this._emit("target",{target:this._target,request:null,isRoot:!0}),this._rootTarget=this._target,this._target;let e={path:this._target.rootPath,isRoot:!0,mimeType:this.format.mimeType},r=this._getTargetValidated(e),i=a=>(this.state==="canceled"?a._close():this._rememberTarget(a),this._emit("target",{target:a,request:e,isRoot:!0}),this._rootTarget=a,a);return r instanceof Promise?this._rootTargetPromise=r.then(i):i(r)}_getRootWriter(e){return this._rootWriterPromise??=(async()=>{let r=await this._getRootTarget(),i=new _t(r,typeof e=="boolean"?e:e(r));return i.start(),i})()}addVideoTrack(e,r={}){if(!(e instanceof Rt))throw new TypeError("source must be a VideoSource.");if(mu(r),r.rotation!==void 0&&![0,90,180,270].includes(r.rotation))throw new TypeError(`Invalid video rotation: ${r.rotation}. Has to be 0, 90, 180 or 270.`);if(!this.format.supportsVideoRotationMetadata&&r.rotation)throw new Error(`${this.format._name} does not support video rotation metadata.`);if(r.frameRate!==void 0&&(!Number.isFinite(r.frameRate)||r.frameRate<=0))throw new TypeError(`Invalid video frame rate: ${r.frameRate}. Must be a positive number.`);let i={...r};return i.group??=this.defaultTrackGroup,this._addTrack(new oa(this._tracks.length+1,this,e,i))}addAudioTrack(e,r={}){if(!(e instanceof Ft))throw new TypeError("source must be an AudioSource.");mu(r);let i={...r};return i.group??=this.defaultTrackGroup,this._addTrack(new ca(this._tracks.length+1,this,e,i))}addSubtitleTrack(e,r={}){if(!(e instanceof ui))throw new TypeError("source must be a SubtitleSource.");mu(r);let i={...r};return i.group??=this.defaultTrackGroup,this._addTrack(new ua(this._tracks.length+1,this,e,i))}setMetadataTags(e){if(un(e),this.state!=="pending")throw new Error("Cannot set metadata tags after output has been started or canceled.");this._metadataTags=e}_addTrack(e){if(this.state!=="pending")throw new Error("Cannot add track after output has been started or canceled.");if(e.source._connectedTrack)throw new Error("Source is already used for a track.");let r=this.format.getSupportedTrackCounts(),i=this._tracks.reduce((o,c)=>o+(c.type===e.type?1:0),0),a=r[e.type].max;if(i===a)throw new Error(a===0?`${this.format._name} does not support ${e.type} tracks.`:`${this.format._name} does not support more than ${a} ${e.type} track${a===1?"":"s"}.`);let s=r.total.max;if(this._tracks.length===s)throw new Error(`${this.format._name} does not support more than ${s} tracks${s===1?"":"s"} in total.`);if(e.isVideoTrack()){let o=this.format.getSupportedVideoCodecs();if(o.length===0)throw new Error(`${this.format._name} does not support video tracks.`+this.format._codecUnsupportedHint(e.source._codec));if(!o.includes(e.source._codec))throw new Error(`Codec '${e.source._codec}' cannot be contained within ${this.format._name}. Supported video codecs are: ${o.map(c=>`'${c}'`).join(", ")}.`+this.format._codecUnsupportedHint(e.source._codec))}else if(e.isAudioTrack()){let o=this.format.getSupportedAudioCodecs();if(o.length===0)throw new Error(`${this.format._name} does not support audio tracks.`+this.format._codecUnsupportedHint(e.source._codec));if(!o.includes(e.source._codec))throw new Error(`Codec '${e.source._codec}' cannot be contained within ${this.format._name}. Supported audio codecs are: ${o.map(c=>`'${c}'`).join(", ")}.`+this.format._codecUnsupportedHint(e.source._codec))}else if(e.isSubtitleTrack()){let o=this.format.getSupportedSubtitleCodecs();if(o.length===0)throw new Error(`${this.format._name} does not support subtitle tracks.`+this.format._codecUnsupportedHint(e.source._codec));if(!o.includes(e.source._codec))throw new Error(`Codec '${e.source._codec}' cannot be contained within ${this.format._name}. Supported subtitle codecs are: ${o.map(c=>`'${c}'`).join(", ")}.`+this.format._codecUnsupportedHint(e.source._codec))}return this._tracks.push(e),e.source._connectedTrack=e,e}async start(){let e=this.format.getSupportedTrackCounts();for(let i of fu){let a=this._tracks.reduce((o,c)=>o+(c.type===i?1:0),0),s=e[i].min;if(a<s)throw new Error(s===e[i].max?`${this.format._name} requires exactly ${s} ${i} track${s===1?"":"s"}.`:`${this.format._name} requires at least ${s} ${i} track${s===1?"":"s"}.`)}let r=e.total.min;if(this._tracks.length<r)throw new Error(r===e.total.max?`${this.format._name} requires exactly ${r} track${r===1?"":"s"}.`:`${this.format._name} requires at least ${r} track${r===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";let i=await this._mutex.acquire();try{await this._muxer.start();let a=this._tracks.map(s=>s.source._start());await Promise.all(a)}finally{i()}})()}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"){this.state==="finalized"&&console.warn("Output has already been finalized.");return}return this._cancelPromise=(async()=>{this.state="canceled";let e=await this._mutex.acquire();try{let r=this._tracks.map(i=>i.source._flushOrWaitForOngoingClose(!0));await Promise.all(r),await Promise.all([...this._unfinalizedTargets].map(i=>i._close())),this._unfinalizedTargets.clear()}finally{e()}})()}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 e=await this._mutex.acquire();try{let r=this._tracks.map(i=>i.source._flushOrWaitForOngoingClose(!1));if(await Promise.all(r),await this._muxer.finalize(),this._rootWriterPromise){let i=await this._rootWriterPromise;i.finalized||(await i.flush(),await i.finalize())}this._onFinalize&&await this._onFinalize(),this.state="finalized"}finally{e()}})()}};var Mo=n=>{if(!n||typeof n!="object")throw new TypeError("options.video, when provided, must be an object.");if(n?.discard!==void 0&&typeof n.discard!="boolean")throw new TypeError("options.video.discard, when provided, must be a boolean.");if(n?.forceTranscode!==void 0&&typeof n.forceTranscode!="boolean")throw new TypeError("options.video.forceTranscode, when provided, must be a boolean.");if(n?.codec!==void 0&&!te.includes(n.codec))throw new TypeError(`options.video.codec, when provided, must be one of: ${te.join(", ")}.`);if(n?.bitrate!==void 0&&!(n.bitrate instanceof xe)&&(!Number.isInteger(n.bitrate)||n.bitrate<=0))throw new TypeError("options.video.bitrate, when provided, must be a positive integer or a quality.");if(n?.width!==void 0&&(!Number.isInteger(n.width)||n.width<=0))throw new TypeError("options.video.width, when provided, must be a positive integer.");if(n?.height!==void 0&&(!Number.isInteger(n.height)||n.height<=0))throw new TypeError("options.video.height, when provided, must be a positive integer.");if(n?.fit!==void 0&&!["fill","contain","cover"].includes(n.fit))throw new TypeError("options.video.fit, when provided, must be one of 'fill', 'contain', or 'cover'.");if(n?.width!==void 0&&n.height!==void 0&&n.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(n?.rotate!==void 0&&![0,90,180,270].includes(n.rotate))throw new TypeError("options.video.rotate, when provided, must be 0, 90, 180 or 270.");if(n?.allowRotationMetadata!==void 0&&typeof n.allowRotationMetadata!="boolean")throw new TypeError("options.video.allowRotationMetadata, when provided, must be a boolean.");if(n?.crop!==void 0&&Ar(n.crop,"options.video."),n?.frameRate!==void 0&&(!Number.isFinite(n.frameRate)||n.frameRate<=0))throw new TypeError("options.video.frameRate, when provided, must be a finite positive number.");if(n?.alpha!==void 0&&!["discard","keep"].includes(n.alpha))throw new TypeError("options.video.alpha, when provided, must be either 'discard' or 'keep'.");if(n?.keyFrameInterval!==void 0&&(!Number.isFinite(n.keyFrameInterval)||n.keyFrameInterval<0))throw new TypeError("options.video.keyFrameInterval, when provided, must be a non-negative number.");if(n?.process!==void 0&&typeof n.process!="function")throw new TypeError("options.video.process, when provided, must be a function.");if(n?.processedWidth!==void 0&&(!Number.isInteger(n.processedWidth)||n.processedWidth<=0))throw new TypeError("options.video.processedWidth, when provided, must be a positive integer.");if(n?.processedHeight!==void 0&&(!Number.isInteger(n.processedHeight)||n.processedHeight<=0))throw new TypeError("options.video.processedHeight, when provided, must be a positive integer.");if(n?.hardwareAcceleration!==void 0&&!["no-preference","prefer-hardware","prefer-software"].includes(n.hardwareAcceleration))throw new TypeError("options.video.hardwareAcceleration, when provided, must be 'no-preference', 'prefer-hardware' or 'prefer-software'.");if(n?.group!==void 0&&!(n.group instanceof Ne||Array.isArray(n.group)&&n.group.every(t=>t instanceof Ne)))throw new TypeError("options.video.group, when provided, must be an OutputTrackGroup or an array of OutputTrackGroups.")},Bo=n=>{if(!n||typeof n!="object")throw new TypeError("options.audio, when provided, must be an object.");if(n?.discard!==void 0&&typeof n.discard!="boolean")throw new TypeError("options.audio.discard, when provided, must be a boolean.");if(n?.forceTranscode!==void 0&&typeof n.forceTranscode!="boolean")throw new TypeError("options.audio.forceTranscode, when provided, must be a boolean.");if(n?.codec!==void 0&&!ae.includes(n.codec))throw new TypeError(`options.audio.codec, when provided, must be one of: ${ae.join(", ")}.`);if(n?.bitrate!==void 0&&!(n.bitrate instanceof xe)&&(!Number.isInteger(n.bitrate)||n.bitrate<=0))throw new TypeError("options.audio.bitrate, when provided, must be a positive integer or a quality.");if(n?.numberOfChannels!==void 0&&(!Number.isInteger(n.numberOfChannels)||n.numberOfChannels<=0))throw new TypeError("options.audio.numberOfChannels, when provided, must be a positive integer.");if(n?.sampleRate!==void 0&&(!Number.isInteger(n.sampleRate)||n.sampleRate<=0))throw new TypeError("options.audio.sampleRate, when provided, must be a positive integer.");if(n?.sampleFormat!==void 0&&!["u8","s16","s32","f32"].includes(n.sampleFormat))throw new TypeError("options.audio.sampleFormat, when provided, must be one of: u8, s16, s32, f32.");if(n?.process!==void 0&&typeof n.process!="function")throw new TypeError("options.audio.process, when provided, must be a function.");if(n?.processedNumberOfChannels!==void 0&&(!Number.isInteger(n.processedNumberOfChannels)||n.processedNumberOfChannels<=0))throw new TypeError("options.audio.processedNumberOfChannels, when provided, must be a positive integer.");if(n?.processedSampleRate!==void 0&&(!Number.isInteger(n.processedSampleRate)||n.processedSampleRate<=0))throw new TypeError("options.audio.processedSampleRate, when provided, must be a positive integer.");if(n?.group!==void 0&&!(n.group instanceof Ne||Array.isArray(n.group)&&n.group.every(t=>t instanceof Ne)))throw new TypeError("options.audio.group, when provided, must be an OutputTrackGroup or an array of OutputTrackGroups.")},pu=2,hu=48e3,Oo=class n{constructor(t){this._addedCounts={video:0,audio:0,subtitle:0};this._totalTrackCount=0;this._nextOutputTrackId=0;this._outputTrackIds=[];this._outputOwnTrackGroups=[];this._trackPromises=[];this._executed=!1;this._synchronizer=new gu;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 Tr))throw new TypeError("options.input must be an Input.");if(!(t.output instanceof ir))throw new TypeError("options.output must be an Output.");if(t.tracks!==void 0&&t.tracks!=="all"&&t.tracks!=="primary")throw new TypeError("options.tracks, when provided, must be either 'all' or 'primary'.");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(t.video!==void 0&&typeof t.video!="function")if(Array.isArray(t.video))for(let i of t.video)Mo(i);else Mo(t.video);if(t.audio!==void 0&&typeof t.audio!="function")if(Array.isArray(t.audio))for(let i of t.audio)Bo(i);else Bo(t.audio);if(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"&&un(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}=Z();this._started=e,this._start=r}static async init(t){let e=new n(t);return await e._init(),e}async _init(){let t=await this.input.getFormat(),e,r=this._options.tracks;if(r===void 0&&(r=t.name.includes("(HLS)")?"primary":"all"),r==="all")e=await this.input.getTracks();else if(r==="primary"){let f=await this.input.getPrimaryVideoTrack(),p=await this.input.getPrimaryAudioTrack();e=[f,p].filter(b=>b!==null)}else ne(r),h(!1);let i=this.output.format.getSupportedTrackCounts(),a=1,s=1,o=[],c=[];for(let f of e){let p;if(f.isVideoTrack())if(this._options.video)if(typeof this._options.video=="function"){let y=await this._options.video(f,a)??{};if(Array.isArray(y))for(let k of y)Mo(k);else Mo(y);p=Array.isArray(y)?y:[y],a++}else p=Array.isArray(this._options.video)?this._options.video:[this._options.video];else p=[{}];else if(f.isAudioTrack())if(this._options.audio)if(typeof this._options.audio=="function"){let y=await this._options.audio(f,s)??{};if(Array.isArray(y))for(let k of y)Bo(k);else Bo(y);p=Array.isArray(y)?y:[y],s++}else p=Array.isArray(this._options.audio)?this._options.audio:[this._options.audio];else p=[{}];else h(!1);let b=p.filter(y=>y.discard);for(let y of b)this.discardedTracks.push({track:f,reason:"discarded_by_user",trackOptions:y});if(p.length===b.length){p.length===0&&this.discardedTracks.push({track:f,reason:"discarded_by_user",trackOptions:{}});continue}let g=p.filter(y=>!y.discard);o.push(f),c.push(g)}this._options.trim?.start!==void 0?this._startTimestamp=this._options.trim.start:this._startTimestamp=Math.max(await this.input.getFirstTimestamp(o),0),this._endTimestamp=Math.max(this._options.trim?.end??1/0,this._startTimestamp);for(let f=0;f<o.length;f++){let p=o[f],b=c[f];for(let g of b){if(this._totalTrackCount===i.total.max){this.discardedTracks.push({track:p,reason:"max_track_count_reached",trackOptions:g});continue}if(this._addedCounts[p.type]===i[p.type].max){this.discardedTracks.push({track:p,reason:"max_track_count_of_type_reached",trackOptions:g});continue}let y=this._nextOutputTrackId++;p.isVideoTrack()?await this._processVideoTrack(p,g,y):p.isAudioTrack()?await this._processAudioTrack(p,g,y):h(!1)}}for(let f=0;f<this.utilizedTracks.length-1;f++)for(let p=f+1;p<this.utilizedTracks.length;p++){let b=this.utilizedTracks[f],g=this.utilizedTracks[p],y=this._outputOwnTrackGroups[f],k=this._outputOwnTrackGroups[p];h(y!==void 0),h(k!==void 0),y&&k&&b.canBePairedWith(g)&&y.pairWith(k)}let u=await this.input.getMetadataTags(),l;if(this._options.tags){let f=typeof this._options.tags=="function"?await this._options.tags(u):this._options.tags;un(f),l=f}else l=u;let m=t.mimeType===this.output.format.mimeType,d=u.raw===l.raw;if(u.raw&&d&&!m&&delete l.raw,this.output.setMetadataTags(l),this.isValid=this._totalTrackCount>=i.total.min&&this._addedCounts.video>=i.video.min&&this._addedCounts.audio>=i.audio.min&&this._addedCounts.subtitle>=i.subtitle.min,this._options.showWarnings??!0){let f=[],p=this.discardedTracks.filter(b=>b.reason!=="discarded_by_user");p.length>0&&f.push("Some tracks had to be discarded from the conversion:",p),this.isValid||(f.length>0&&f.push(`

`),f.push(this._getInvalidityExplanation().join(""))),f.length>0&&console.warn(...f)}}_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")&&this.discardedTracks.some(r=>r.reason==="no_encodable_target_codec");if(t.push("Due to discarded tracks, this conversion cannot be executed."),e){let r=this.discardedTracks.flatMap(a=>a.reason==="discarded_by_user"?[]:a.track.type==="video"?this.output.format.getSupportedVideoCodecs():a.track.type==="audio"?this.output.format.getSupportedAudioCodecs():this.output.format.getSupportedSubtitleCodecs()),i=[...new Set(r)];i.length===1?t.push(`
Tracks were discarded because your environment is not able to encode '${i[0]}'.`):t.push(`
Tracks were discarded because your environment is not able to encode any of the following codecs: ${i.map(a=>`'${a}'`).join(", ")}.`),i.includes("mp3")&&t.push(`
The @mediabunny/mp3-encoder extension package provides support for encoding MP3.`),i.includes("aac")&&t.push(`
The @mediabunny/aac-encoder extension package provides support for encoding AAC.`),(i.includes("ac3")||i.includes("eac3"))&&t.push(`
The @mediabunny/ac3 extension package provides support for encoding and decoding AC-3/E-AC-3.`),i.includes("flac")&&t.push(`
The @mediabunny/flac-encoder extension package provides support for encoding FLAC.`)}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.");this._executed=!0;for(let t of this._outputTrackIds)this._synchronizer.declareTrack(t);if(this.onProgress){let e=[...new Set(this.utilizedTracks)].map(async i=>await i.isLive()?1/0:await i.getDurationFromMetadata()??await i.computeDuration()),r=Math.max(0,...await Promise.all(e));this._computeProgress=!0,this._totalDuration=Math.min(r-this._startTimestamp,this._endTimestamp-this._startTimestamp);for(let i of this._outputTrackIds)this._maxTimestamps.set(i,0);this.onProgress?.(0,0)}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 la;if(await this.output.finalize(),this._computeProgress){let t=Math.min(...this._maxTimestamps.values());this.onProgress?.(1,t)}}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,r){let i=await t.getCodec();if(!i){this.discardedTracks.push({track:t,reason:"unknown_source_codec",trackOptions:e});return}let a,s=await t.getRotation(),o=Ze(s+(e.rotate??0)),c=o,u=this.output.format.supportsVideoRotationMetadata&&(e.allowRotationMetadata??!0),l=await t.getSquarePixelWidth(),m=await t.getSquarePixelHeight(),[d,f]=o%180===0?[l,m]:[m,l],p=e.crop;p&&(p=Li(p,d,f));let[b,g]=p?[p.width,p.height]:[d,f],y=b,k=g,w=y/k;e.width!==void 0&&e.height===void 0?(y=qr(e.width),k=qr(Math.round(y/w))):e.width===void 0&&e.height!==void 0?(k=qr(e.height),y=qr(Math.round(k*w))):e.width!==void 0&&e.height!==void 0&&(y=qr(e.width),k=qr(e.height));let T=await t.getFirstTimestamp(),S=this.output.format.getSupportedVideoCodecs(),x=!!e.forceTranscode||T<this._startTimestamp||!!e.frameRate||e.keyFrameInterval!==void 0||e.process!==void 0||e.bitrate!==void 0||!S.includes(i)||e.codec&&e.codec!==i||y!==b||k!==g||o!==0&&!u||!!p,P=e.alpha??"discard";if(x){if(!await t.canDecode()){this.discardedTracks.push({track:t,reason:"undecodable_source_codec",trackOptions:e});return}e.codec&&(S=S.filter(z=>z===e.codec));let R=e.bitrate??Kn,v=await $s(S,{width:e.process&&e.processedWidth?e.processedWidth:y,height:e.process&&e.processedHeight?e.processedHeight:k,bitrate:R});if(!v){this.discardedTracks.push({track:t,reason:"no_encodable_target_codec",trackOptions:e});return}let E={codec:v,bitrate:R,keyFrameInterval:e.keyFrameInterval,sizeChangeBehavior:e.fit??"passThrough",alpha:P,hardwareAcceleration:e.hardwareAcceleration,transform:{}};h(E.transform);let D=y!==b||k!==g||o!==0&&(!u||e.process!==void 0)||!!p||l!==await t.getCodedWidth()||m!==await t.getCodedHeight();if(!D){let z=new ir({format:new di,target:new Fr}),q=new oi(E);z.addVideoTrack(q),await z.start();let we=await new xr(t).getSample(T);if(we)try{await q.add(we),we.close(),await z.finalize()}catch(da){console.info("Error when probing encoder support. Falling back to rerender path.",da),D=!0,z.cancel()}else await z.cancel()}e.frameRate&&(E.transform.frameRate=e.frameRate),D&&(c=0,E.transform.width=y,E.transform.height=k,E.transform.fit=e.fit??"fill",E.transform.rotate=Ze(o-s),E.transform.crop=p,E.transform.alpha=P);let U=new oi(E);a=U,this._trackPromises.push((async()=>{await this._started;let z=new xr(t);for await(let q of z.samples(this._startTimestamp,this._endTimestamp)){if(this._canceled){q.close();return}let Te=Math.max(q.timestamp-this._startTimestamp,0);q.setTimestamp(Te),await this._registerVideoSample(e,r,U,q),q.close()}U.close(),this._synchronizer.closeTrack(r)})())}else{let I=new Mr(i);a=I,this._trackPromises.push((async()=>{await this._started;let R=new gt(t),E={decoderConfig:await t.getDecoderConfig()??void 0};for await(let D of R.packets(void 0,void 0,{verifyKeyPackets:!0})){if(this._canceled)return;if(D.timestamp>=this._endTimestamp)break;let U=D.clone({timestamp:D.timestamp-this._startTimestamp,sideData:P==="discard"?{}:D.sideData});h(U.timestamp>=0),this._reportProgress(r,U.timestamp+U.duration),await I.add(U,E),this._synchronizer.shouldWait(r,U.timestamp)&&await this._synchronizer.wait(U.timestamp)}I.close(),this._synchronizer.closeTrack(r)})())}let A=null;e.group||(A=new Ne);let C=await t.getLanguageCode();this.output.addVideoTrack(a,{frameRate:e.frameRate,languageCode:Ut(C)?C:void 0,name:await t.getName()??void 0,disposition:await t.getDisposition(),rotation:c,group:A??e.group}),this._addedCounts.video++,this._totalTrackCount++,this.utilizedTracks.push(t),this._outputTrackIds.push(r),this._outputOwnTrackGroups.push(A)}async _registerVideoSample(t,e,r,i){if(this._canceled)return;this._reportProgress(e,i.timestamp+i.duration);let a;if(!t.process)a=[i];else{let s=t.process(i);s instanceof Promise&&(s=await s),Array.isArray(s)||(s=s===null?[]:[s]),a=s.map(o=>o instanceof ke?o:typeof VideoFrame<"u"&&o instanceof VideoFrame?new ke(o):new ke(o,{timestamp:i.timestamp,duration:i.duration}))}try{for(let s of a){if(this._canceled)break;await r.add(s),this._synchronizer.shouldWait(e,s.timestamp)&&await this._synchronizer.wait(s.timestamp)}}finally{for(let s of a)s!==i&&s.close()}}async _processAudioTrack(t,e,r){let i=await t.getCodec();if(!i){this.discardedTracks.push({track:t,reason:"unknown_source_codec",trackOptions:e});return}let a,s=await t.getNumberOfChannels(),o=await t.getSampleRate(),c=await t.getFirstTimestamp(),u=e.numberOfChannels??s,l=e.sampleRate??o,m=u!==s||l!==o||c<this._startTimestamp||c>this._startTimestamp&&!this.output.format.supportsTimestampedMediaData,d=this.output.format.getSupportedAudioCodecs();if(!e.forceTranscode&&!e.bitrate&&!m&&d.includes(i)&&(!e.codec||e.codec===i)&&!e.process&&e.sampleFormat===void 0){let b=new Br(i);a=b,this._trackPromises.push((async()=>{await this._started;let g=new gt(t),k={decoderConfig:await t.getDecoderConfig()??void 0};for await(let w of g.packets()){if(this._canceled)return;if(w.timestamp>=this._endTimestamp)break;let T=w.clone({timestamp:w.timestamp-this._startTimestamp});h(T.timestamp>=0),this._reportProgress(r,T.timestamp+T.duration),await b.add(T,k),this._synchronizer.shouldWait(r,T.timestamp)&&await this._synchronizer.wait(T.timestamp)}b.close(),this._synchronizer.closeTrack(r)})())}else{if(!await t.canDecode()){this.discardedTracks.push({track:t,reason:"undecodable_source_codec",trackOptions:e});return}let g=null;e.codec&&(d=d.filter(w=>w===e.codec));let y=e.bitrate??Kn,k=await Wi(d,{numberOfChannels:e.process&&e.processedNumberOfChannels?e.processedNumberOfChannels:u,sampleRate:e.process&&e.processedSampleRate?e.processedSampleRate:l,bitrate:y});if(!k.some(w=>nt.includes(w))&&d.some(w=>nt.includes(w))&&(u!==pu||l!==hu)){let T=(await Wi(d,{numberOfChannels:pu,sampleRate:hu,bitrate:y})).find(S=>nt.includes(S));T&&(m=!0,g=T,u=pu,l=hu)}else g=k[0]??null;if(g===null){this.discardedTracks.push({track:t,reason:"no_encodable_target_codec",trackOptions:e});return}if(m)a=this._resampleAudio(t,e,r,g,u,l,y);else{let w=new ci({codec:g,bitrate:y});a=w,this._trackPromises.push((async()=>{await this._started;let T=new Pr(t);for await(let S of T.samples(void 0,this._endTimestamp)){if(this._canceled){S.close();return}S.setTimestamp(S.timestamp-this._startTimestamp),await this._registerAudioSample(e,r,w,S),S.close()}w.close(),this._synchronizer.closeTrack(r)})())}}let f=null;e.group||(f=new Ne);let p=await t.getLanguageCode();this.output.addAudioTrack(a,{languageCode:Ut(p)?p:void 0,name:await t.getName()??void 0,disposition:await t.getDisposition(),group:f??e.group}),this._addedCounts.audio++,this._totalTrackCount++,this.utilizedTracks.push(t),this._outputTrackIds.push(r),this._outputOwnTrackGroups.push(f)}async _registerAudioSample(t,e,r,i){if(this._canceled)return;let a=i;t.sampleFormat!==void 0&&qs(a.format)!==t.sampleFormat&&(a=Gs(a,t.sampleFormat)),this._reportProgress(e,a.timestamp+a.duration);let s;if(!t.process)s=[a];else{let o=t.process(a);if(o instanceof Promise&&(o=await o),Array.isArray(o)||(o=o===null?[]:[o]),!o.every(c=>c instanceof be))throw new TypeError("The audio process function must return an AudioSample, null, or an array of AudioSamples.");s=o}try{for(let o of s){if(this._canceled)break;await r.add(o),this._synchronizer.shouldWait(e,o.timestamp)&&await this._synchronizer.wait(o.timestamp)}}finally{a!==i&&a.close();for(let o of s)o!==i&&o.close()}}_resampleAudio(t,e,r,i,a,s,o){let c=new ci({codec:i,bitrate:o});return this._trackPromises.push((async()=>{await this._started;let u=new Ji({targetNumberOfChannels:a,targetSampleRate:s,startTime:this._startTimestamp,endTime:this._endTimestamp,onSample:async d=>{h(d.timestamp>=this._startTimestamp),d.setTimestamp(d.timestamp-this._startTimestamp),await this._registerAudioSample(e,r,c,d),d.close()}}),m=new Pr(t).samples(this._startTimestamp,this._endTimestamp);for await(let d of m){if(this._canceled){d.close();return}await u.add(d),d.close()}await u.finalize(),c.close(),this._synchronizer.closeTrack(r)})()),c}_reportProgress(t,e){if(!this._computeProgress)return;h(this._totalDuration!==null),this._maxTimestamps.set(t,Math.max(e,this._maxTimestamps.get(t)));let r=Math.min(...this._maxTimestamps.values()),i=ue(r/this._totalDuration,0,1);i!==this._lastProgress&&(this._lastProgress=i,this.onProgress?.(i,r))}},la=class extends Error{constructor(t="Conversion has been canceled."){super(t),this.name="ConversionCanceledError"}},mm=1,gu=class{constructor(){this.maxTimestamps=new Map;this.resolvers=[]}declareTrack(t){this.maxTimestamps.set(t,0)}shouldWait(t,e){let r=this.maxTimestamps.get(t);h(r!==void 0),this.maxTimestamps.set(t,Math.max(e,r));let i=this.computeMinAndMaybeResolve();return e-i>mm}wait(t){let{promise:e,resolve:r}=Z();return this.resolvers.push({timestamp:t,resolve:r}),e}closeTrack(t){this.maxTimestamps.delete(t),this.computeMinAndMaybeResolve()}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<mm&&(r.resolve(),this.resolvers.splice(e,1),e--)}return t}};var fm=Symbol.for("mediabunny loaded");globalThis[fm]&&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[fm]=!0;return wm(Hp);})();
if (typeof module === "object" && typeof module.exports === "object") Object.assign(module.exports, Mediabunny)