https://vrew.ai/try/assets/mediaSourceAudioReader.worker-DURWn3HP.js

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4Math.round(t/e*1e6),Jr=(t,e,r)=>Math.round(t*r/e);class vn{_targetSampleRate;_sourceSampleRate=0;_positionNumerator=0;_lastSamplePerChannel=new Float32Array(0);_currTimelineIdx=0;_sourceEndTimelineIdx=0;constructor(e){this._targetSampleRate=e.sampleRate}process(e){this._sourceSampleRate!==e.sampleRate&&(this.clear(),this._sourceSampleRate=e.sampleRate,this._lastSamplePerChannel=new Float32Array(e.data.length),this._currTimelineIdx=Jr(e.timelineIndex,e.sampleRate,this._targetSampleRate),this._positionNumerator=this._currTimelineIdx*e.sampleRate-e.timelineIndex*this._targetSampleRate);const r=[];if(this._sourceSampleRate===this._targetSampleRate)r.push(e),this._currTimelineIdx=this._currTimelineIdx+e.data[0].length;else{const s=this._resample(e.data);s[0].length>0&&r.push({timelineIndex:this._currTimelineIdx,data:s,sampleRate:this._targetSampleRate}),this._currTimelineIdx=this._currTimelineIdx+s[0].length}return this._sourceEndTimelineIdx=e.timelineIndex+e.data[0].length,r}flush(){if(this._sourceSampleRate===0||this._sourceSampleRate===this._targetSampleRate)return this.clear(),[];const r=Jr(this._sourceEndTimelineIdx,this._sourceSampleRate,this._targetSampleRate)-this._currTimelineIdx;if(r<=0)return this.clear(),[];const s=Array.from(this._lastSamplePerChannel,i=>new Float32Array(r).fill(i)),a={timelineIndex:this._currTimelineIdx,data:s,sampleRate:this._targetSampleRate};return this.clear(),[a]}clear(){this._positionNumerator=0,this._lastSamplePerChannel=new Float32Array(0),this._sourceSampleRate=0,this._currTimelineIdx=0,this._sourceEndTimelineIdx=0}_resample(e){const r=e.map(()=>[]),s=this._targetSampleRate;for(;Math.floor(this._positionNumerator/s)<e[0].length-1;){const a=Math.floor(this._positionNumerator/s),o=(this._positionNumerator-a*s)/s;for(let c=0;c<e.length;c++){const u=e[c];let m,h;a<0?(m=this._lastSamplePerChannel[c],h=u[0]):(m=u[a],h=u[a+1]),r[c].push(m+(h-m)*o)}this._positionNumerator+=this._sourceSampleRate}return this._positionNumerator-=e[0].length*s,this._updateLastSamplePerChannel(e),r.map(a=>new Float32Array(a))}_updateLastSamplePerChannel(e){e.length!==this._lastSamplePerChannel.length&&(this._lastSamplePerChannel=new Float32Array(e.length));const r=e[0].length-1;for(let s=0;s<e.length;s++)this._lastSamplePerChannel[s]=e[s][r]}}const va=t=>{switch(t){case"mp3":return["mp3","mp4a.69","mp4a.6B"];case"aac":return["mp4a.40.2","mp4a.40.02","mp4a.40.5","mp4a.40.05","mp4a.40.29","mp4a.67"];case"pcm-u8":return["pcm-u8"];case"pcm-s16":return["pcm-s16"];case"pcm-s24":return["pcm-s24"];case"pcm-s32":return["pcm-s32"];case"pcm-f32":return["pcm-f32"];case"opus":return["opus"];case"vorbis":return["vorbis"];default:throw new Error(`invalid codec: ${t}`)}},xn=t=>{const e=["mp3","aac","pcm-u8","pcm-s16","pcm-s24","pcm-s32","pcm-f32","opus","vorbis"];for(const r of e)if(va(r).includes(t.codec))return r;throw new Error(`invalid codec: ${t.codec}`)},ir=(t,e)=>Array.from({length:t},()=>new Float32Array(e));class Nn{constructor(e){this._numberOfChannels=e,this._buffer=ir(this._numberOfChannels,0),this._length=0}_numberOfChannels;_buffer;_length;get length(){return this._length}get numberOfChannels(){return this._numberOfChannels}destroy=()=>{this._buffer=[],this._length=0};push(e){const r=e[0].length;this._ensureCapacity(r+this._length);for(let s=0;s<this._numberOfChannels;s++)this._buffer[s].set(e[s],this._length);this._length+=r}shift(e){const r=Math.min(e,this._length),s=ir(this._numberOfChannels,r);for(let a=0;a<this._numberOfChannels;a++){const i=this._buffer[a].subarray(0,r);s[a].set(i),this._buffer[a].copyWithin(0,r)}return this._length-=r,s}subarray(e,r){const s=e??0,a=r??this._length;return Array.from({length:this._numberOfChannels},(i,o)=>this._buffer[o].subarray(s,a))}_ensureCapacity(e){const r=this._buffer[0].length;if(e-r>0)for(let a=0;a<this._numberOfChannels;a++){const i=new Float32Array(e);i.set(this._buffer[a]),this._buffer[a]=i}}}const kn=t=>{const e=t[0]?.data.length??0;if(e===0)return[];const r=t.reduce((i,o)=>i+(o.data[0]?.length??0),0),s=Array.from({length:e},()=>new Float32Array(r));let a=0;for(const i of t){const o=i.data[0]?.length??0;for(let c=0;c<e;c++)s[c].set(i.data[c]??new Float32Array(0),a);a+=o}return s},Un=(t,e)=>ha(t,e),xa=(t,e,r)=>({debug:r?(...s)=>t.debug(...s):()=>{}

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4{if(this._input===null||this._tempo===1||this._inputSamples===0)return this.clear(),[];const r=Math.round(this._inputSamples/this._tempo)-this._outputSamples;if(r<=0)return this.clear(),[];const s=this._sampleRate,a=this._currTimelineIdx,i=Math.round(s*gt/1e3),o=Math.round(s*Na/1e3),c=i+o,{output:u}=Zr($n(this._input.subarray(),this._input.length+c),s,this._tempo,{mode:"drain",isFirstWindow:this._isFirstWindow,overlapIdx:this._overlapIdx,processIdx:this._processIdx,skipRemainder:this._skipRemainder}),m=u.map(h=>{const A=new Float32Array(r);return A.set(h.slice(0,r)),A});return this.clear(),[{timelineIndex:a,data:m,sampleRate:s}]};clear=()=>{this._input?.destroy(),this._input=null,this._processIdx=0,this._overlapIdx=0,this._skipRemainder=0,this._isFirstWindow=!0,this._tempo=1,this._currTimelineIdx=0,this._inputSamples=0,this._outputSamples=0,this._sampleRate=0}}const Zr=(t,e,r,s)=>{const a=Math.round(e*gt/1e3),i=Math.round(e*Na/1e3),o=Math.round(e*Gn/1e3),c=Array.from({length:t.length},()=>[]),u=a-o,m=Math.ceil(r*u),h=s.mode==="drain"?o:Math.max(m+o,a)+i;let A=s.processIdx,l=s.overlapIdx,T=s.skipRemainder,g=s.isFirstWindow;for(;A<t[0].length-h&&l<t[0].length-o;){let b;if(g){b=Math.round(i/2);for(let y=0;y<t.length;y++)c[y].push(...t[y].subarray(b,b+o))}else{const y=[A,Math.min(A+i,t[0].length-o)],S=[l,l+o];b=zn(t,y,S,Bn,Wn),Hn(c,t,l,b,o)}for(let y=0;y<t.length;y++)c[y].push(...t[y].subarray(b+o,b+a-o));l=b+a-o;const w=Yn(T,u,r);A+=w.skipSize,T=w.remainder,g=!1}return{output:c,overlapIdx:l,processIdx:A,skipRemainder:T}},Yn=(t,e,r)=>{const s=t+r*e,a=Math.floor(s);return{skipSize:a,remainder:s-a}},zn=(t,e,r,s,a)=>{let i=0,o=Number.POSITIVE_INFINITY;const[c,u]=e,[m,h]=r;for(let A=c;A<u;A+=s){let l=0;for(let T=m;T<h;T+=a)for(let g=0;g<t.length;g++)l+=Math.pow(t[g][A+T-m]-t[g][T],2);l<o&&(o=l,i=A)}return i},Hn=(t,e,r,s,a)=>{const i=1/a;for(let o=0;o<t.length;o++)for(let c=0;c<a;c++){const u=i*c,m=1-u,h=e[o][r+c]*m,A=e[o][s+c]*u;t[o].push(h+A)}},$n=(t,e)=>t.map(r=>{const s=Math.max(0,Math.floor(e));if(r.length>=s)return r.slice(0,s);if(s===0)return new Float32Array(0);const a=new Float32Array(s);if(a.set(r),r.length===0)return a;if(r.length===1)return a.fill(r[0],1),a;const i=2*(r.length-1);for(let o=r.length;o<s;o++){const c=Math.abs(r.length-1-(o-r.length+1)%i);a[o]=r[c]}return a});class ka{_results=[];_sampleRate=null;init(e){this._sampleRate=e}get length(){return this._results.length}get sampleRate(){if(!this._sampleRate)throw C(V.AUDIO_LOGIC_ERR,"AudioDecoderQueue is not initialized");return this._sampleRate}push(e){this._results.push(e)}get(e){const r=this.sampleRate;for(;this._results.length>0;){const s=this._results[0],a=s.timestamp+s.duration,i=$e(e,r),o=$e(a,r);if(i<o)return s.clone();this._results.shift().close()}return null}clear(){this._results.forEach(e=>e.close()),this._results.splice(0,this._results.length),this._results.length=0}}class qe{_origin;_format;constructor(e){this._origin=e,e instanceof AudioData?this._format=e.format:this._format=jn(e.data)}get sampleRate(){return this._origin.sampleRate}get timestamp(){return this._origin.timestamp}get format(){return this._format}get numberOfChannels(){return this._origin instanceof AudioData?this._origin.numberOfChannels:this._origin.data.length}get numberOfFrames(){return this._origin instanceof AudioData?this._origin.numberOfFrames:this._origin.data[0].length}get duration(){return this._origin instanceof AudioData?this._origin.duration:Mn(this.numberOfFrames,this.sampleRate)}clone(){return this._origin instanceof AudioData?new qe(this._origin.clone()):new qe({data:this._origin.data.map(e=>e.slice()),sampleRate:this.sampleRate,timestamp:this.timestamp})}close(){this._origin instanceof AudioData&&this._origin.close()}copyTo(e,r){if(this._origin instanceof AudioData)return this._origin.copyTo(e,{...r,format:"f32-planar"});const s=r.planeIndex,a=r.frameOffset||0,i=a+(r.frameCount||this.numberOfFrames),o=this._origin.data[s].subarray(a,i);qn(o,e)}}const jn=t=>t instanceof Uint8Array?"u8-planar":t instanceof Int16Array?"s16-planar":t instanceof Int32Array?"s32-planar":"f32-planar",qn=(t,e)=>{t instanceof Uint8Array?Kn(t,e):t instanceof Int16Array?Qn(t,e):t instanceof Int32Array?Jn(t,e):t instanceof Float32Array&&e.set(t)},Kn=(t,e)=>{for(let r=0;r<t.length;r++)e[r]=t[r]/255},Qn=(t,e)=>{for(let r=0;r<t.length;r++)e[r]=t[r]/32767},Jn=(t,e)=>{for(let r=0;r<t.length;r++)e[r]=t[r]/2147483647};

4class je{future=null;current=null;_isResolved=!1;promise(e=!1){return e&&this.reset(),this.current?this.current:this.current=new Promise((r,s)=>{this.future={resolve:r,reject:s}})}resolve(e,r=!0,s=!1){if(!this.future){if(s)return;throw new Error("No promise")}this._isResolved||(this.future.resolve(e),this._isResolved=!0,r&&this.reset())}reject(e,r=!0,s=!1){if(!this.future){if(s)return;throw new Error("No promise")}this._isResolved||(this.future.reject(e),this._isResolved=!0,r&&this.reset())}reset(){return this.current=null,this.future=null,this._isResolved=!1,this}}const Zn=1024*2,ei=1152*3,ti=0,Ua=(t,e)=>t.includes("aac")?Ht(Zn,e).as.us():t.includes("mp3")?Ht(ei,e).as.us():t.includes("pcm")?Ht(ti,e).as.us():t.includes("opus")?U.fromMS(80).as.us():0;async function Ga(t,e){let r;e.codecpar?r=await t.ff_copyout_codecpar(e.codecpar):r=e;const s=await t.avcodec_get_name(r.codec_id),a={codec:"",sampleRate:r.sample_rate,numberOfChannels:r.channels},i=r.extradata;switch(s){case"flac":a.codec="flac",a.description=i;break;case"mp3":a.codec="mp3";break;case"aac":{switch(r.profile){case 1:default:a.codec="mp4a.40.2";break;case 4:a.codec="mp4a.40.5";break;case 28:a.codec="mp4a.40.29";break}i&&(a.description=i);break}case"opus":a.codec="opus";break;case"vorbis":a.codec="vorbis",a.description=i;break;case"pcm_f32le":a.codec="pcm-f32";break;case"pcm_f32be":a.codec="pcm-f32be";break;case"pcm_s32le":a.codec="pcm-s32";break;case"pcm_s32be":a.codec="pcm-s32be";break;case"pcm_s24le":a.codec="pcm-s24";break;case"pcm_s24be":a.codec="pcm-s24be";break;case"pcm_s16le":a.codec="pcm-s16";break;case"pcm_s16be":a.codec="pcm-s16be";break;case"pcm_u8":a.codec="pcm-u8";break}if(a.codec)return a;throw new Error(`Unsupported audio codec: ${s}`)}function ri(t,e,r){let s=(t.durationhi||0)*4294967296+(t.duration||0),a=(t.ptshi||0)*4294967296+(t.pts||0);r&&r.i64tof64&&(s=r.i64tof64(t.duration||0,t.durationhi||0),a=r.i64tof64(t.pts||0,t.ptshi||0));let i=t.time_base_num,o=t.time_base_den;if(!i)if(e.length){const m=e;i=m[0],o=m[1]}else{const m=e;i=m.time_base_num,o=m.time_base_den}const c=Math.round(s*i/(o||1)*1e6);return{timestamp:Math.round(a*i/(o||1)*1e6),duration:c}}function ai(t,e,r){const{timestamp:s,duration:a}=ri(t,e,r);return new EncodedAudioChunk({type:"key",timestamp:s,duration:a,data:t.data.buffer})}const L={};(function(){function t(o){if(o=o||[0,97,115,109,1,0,0,0],typeof WebAssembly!="object"||typeof WebAssembly.instantiate!="function")return!1;try{var o=new WebAssembly.Module(new Uint8Array(o));if(o instanceof WebAssembly.Module)return new WebAssembly.Instance(o)instanceof WebAssembly.Instance}catch{}return!1}function e(){try{var o=new WebAssembly.Memory({initial:1,maximum:1,shared:!0});return o.buffer instanceof 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this._request={timestamp:e,future:r},this._lastRequestedTime=e,this._decodeLoop(this._generation),s};_decodeLoop=async e=>{if(this._isDecoding)return;const r=new je;for(this._isDecoding=r.promise();this._generation===e&&this._request;){const s=this._request,a=this._queue.get(s.timestamp);if(a){s.future.resolve(a),this._request=null;break}let i=!1,o=!0;for(;this._request===s&&this._generation===e&&this._decoder.decodeQueueSize<ii;){this._phase="demux";const h=await this._demuxer.next();if(this._generation!==e)break;if(h===null){if(this._demuxer.eof){i=!0;break}if(this._decoder.decodeQueueSize>0)break;o=!1;break}this._decoder.decode(h)}if(this._generation!==e)break;if(this._request!==s)continue;if(i){if(this._phase="flush",await this._decoder.flush(),this._generation!==e)break;if(this._request!==s)continue;const h=this._queue.get(s.timestamp)??null;s.future.resolve(h),this._request=null;break}if(!o){await wa(0);continue}const c=new je,u=c.promise();this._wait=c;const m=()=>{this._generation===e&&this._decoder.decodeQueueSize<ea&&c.resolve()};this._decoder.ondequeue=m,this._decoder.decodeQueueSize<ea&&c.resolve();try{this._phase="webcodecs-output",await u}finally{this._generation===e&&this._decoder.ondequeue===m&&(this._decoder.ondequeue=null),this._wait===c&&(this._wait=null)}}this._generation===e&&(this._decoder.ondequeue=null,this._isDecoding=null),r.resolve()};_onOutput=e=>{if(this._lastDecodedTime=e.timestamp+e.duration,this._isSeeking!==null||this._request&&this._request.timestamp>e.timestamp+e.duration)e.close();else if(this._queue.push(new qe(e)),this._request){const r=this._queue.get(this._request.timestamp);r&&(this._request.future.resolve(r),this._request=null)}this._wait?.resolve(),this._wait=null};_onError=e=>{const r=C(V.AUDIO_DECODE_ERR,e,"Failed to decode audio in 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24          disk: ${i}
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25return r.v1=t,r.v4=e,tr=r,tr}var Ei=pi(),Vi=mi(Ei);const _a="jsfetch:";class Ci{constructor(e,r,s){this._mjsUrl=e,this._wasmUrl=r,this._logger=s}_mjsUrl;_wasmUrl;_logger;_libav=null;_libAVState=null;_lastError=null;get libav(){if(!this._libav)throw C(V.LOGIC_ERR,"LibAV is null");return this._libav}get lastError(){return this._lastError?C(void 0,this._lastError).message:""}async init(){return this._libav=await si({toImport:this._mjsUrl,wasmurl:this._wasmUrl,noworker:!0}),this}get containerStart(){if(!this._libAVState)throw C(V.LOGIC_ERR,"LibAVState is null");return this._libAVState.containerStart}getContainerVideoColorSpace(e){return this._libAVState?.containerVideoColorSpaces.get(e)}async clear(){if(!this._libAVState)return;const e=this._libav;if(!e){this._libAVState=null;return}try{this._libAVState.pkt&&await e.av_packet_free_js(this._libAVState.pkt),this._libAVState.fmt_ctx&&await e.avformat_close_input_js(this._libAVState.fmt_ctx),this._libAVState.filename&&!this._libAVState.filename.startsWith(_a)&&await e.unlinkreadaheadfile(this._libAVState.filename),this._lastError=null}catch(r){this._logger.warn(null,"Error while clearing libAV resources:",C(void 0,r).message),this._lastError=r}finally{this._libAVState=null}}async destroy(){await this.clear(),this._libav?.terminate(),this._libav=null,this._lastError=null}async openFileWithUri(e){if(!this._libav)throw C(V.LOGIC_ERR,"LibAV is null while opening file with uri");const r=Ba(e),s=_a+r;try{await this.openFile(s)}catch(a){throw C(navigator.onLine?V.FILE_READ_ERROR:V.NETWORK_FAILED_ERR,a,`openFileWithUri failed (navigator.onLine: ${navigator.onLine})`)}}async openFileWithBlob(e){if(!this._libav)throw C(V.LOGIC_ERR,"LibAV is null while opening file with blob");const r=Vi.v4();await this._libav.mkreadaheadfile(r,e),await this.openFile(r)}async openFile(e){return this._handleErrorAsync("openFile",async()=>{if(!this._libav)throw C(V.LOGIC_ERR,"LibAV is null while opening file");const r=this._libav;let s=0;try{if(s=await r.avformat_open_input_js(e,0,0),s===0)throw new Error("Could not open source file");const a=await this.snapshotPreAnalysisContainerVideoColorSpaces(r,s);await r.avformat_find_stream_info(s,0);const i=await this.parseStreams(r,s),o=ve(Te(await r.AVFormatContext_start_timehi(s),await r.AVFormatContext_start_time(s)),1,1e6);this._libAVState={filename:e,fmt_ctx:s,streams:i,pkt:await r.av_packet_alloc(),containerStart:o,containerVideoColorSpaces:a}}catch(a){if(s!==0)try{await r.avformat_close_input_js(s)}catch(i){this._logger.warn(null,"Error while closing failed libAV input:",C(void 0,i).message)}throw a}})}async snapshotPreAnalysisContainerVideoColorSpaces(e,r){const s=new Map,a=await e.AVFormatContext_nb_streams(r);for(let i=0;i<a;i++){const o=await e.AVFormatContext_streams_a(r,i),c=await e.AVStream_codecpar(o);if(await e.AVCodecParameters_codec_type(c)===e.AVMEDIA_TYPE_VIDEO){const[u,m,h,A]=await Promise.all([e.AVCodecParameters_color_range(c),e.AVCodecParameters_color_primaries(c),e.AVCodecParameters_color_trc(c),e.AVCodecParameters_color_space(c)]);s.set(i,{range:u,primaries:m,trc:h,matrix:A})}}return s}async parseStreams(e,r){const s=[],a=await e.AVFormatContext_nb_streams(r);for(let i=0;i<a;i++){const o=await e.AVFormatContext_streams_a(r,i),c=await e.AVStream_codecpar(o),[u,m,h,A,l,T,g,b,w]=await Promise.all([e.AVCodecParameters_codec_type(c),e.AVCodecParameters_codec_id(c),e.AVStream_start_time(o),e.AVStream_start_timehi(o),e.AVStream_time_base_num(o),e.AVStream_time_base_den(o),e.AVStream_duration(o),e.AVStream_durationhi(o),e.avformat_get_rotation(o)]),y=Te(b,g);s.push({ptr:o,index:i,codecpar:c,codec_type:u,codec_id:m,start_time:h,start_timehi:A,time_base_num:l,time_base_den:T,duration_time_base:y,duration:y*l/T,rotation:w})}return s}getVideoStream(){return this._handleError("getVideoStream",()=>{if(!this._libav||!this._libAVState?.streams)throw C(V.LOGIC_ERR,"libav or stream is null while getting video stream");const e=this._libav,r=this._libAVState.streams.find(s=>s.codec_type===e.AVMEDIA_TYPE_VIDEO);if(!r)throw C(V.VIDEO_FORMAT_ERR,`no video stream found, streams length: ${this._libAVState.streams.length}`);return{...r,rotation:r.rotation===-2147483648?0:r.rotation}})}async getAudioStream(){return this._handleErrorAsync("getAudioStream",async()=>

25{if(!this._libav||!this._libAVState?.streams)throw C(V.LOGIC_ERR,"libav or stream is null while getting audio stream");const e=this._libav,r=this._libAVState.fmt_ctx,s=this._libAVState.streams.find(a=>a.codec_type===e.AVMEDIA_TYPE_AUDIO);if(!s)throw C(V.AUDIO_FORMAT_ERR,`no audio stream found, streams length: ${this._libAVState.streams.length}`);return s.duration<0&&(s.duration=await this._libav.ff_get_media_duration(r)),s})}async estimateDuration(){return this._handleErrorAsync("estimateDuration",async()=>{if(!this._libav||!this._libAVState)throw C(V.LOGIC_ERR,"LibAV or LibAVState is null");const e=this.getVideoStream(),r=await this._libav.av_seek_frame(this._libAVState.fmt_ctx,e.index,4294967295,2147483647,this._libav.AVSEEK_FLAG_BACKWARD);if(r<0)throw C(V.VIDEO_FORMAT_ERR,`error seeking in estimateDuration(): [${r}] 
26        ff_error: ${await this._libav.ff_error(r)}
27        strerror: ${await this._libav.strerror(r)}`);const[,s]=await this.readPackets(e.index,2147483647);return await this._libav.av_seek_frame(this._libAVState.fmt_ctx,e.index,0,0,this._libav.AVSEEK_FLAG_BACKWARD),U.max(...s.map(a=>ve(Te(a.ptshi,a.pts),e.time_base_num,e.time_base_den).add(ve(Te(a.durationhi,a.duration),e.time_base_num,e.time_base_den))))})}async seekFrame(e,r){return this._handleErrorAsync("seekFrame",async()=>{if(!this._libav||!this._libAVState)throw C(V.LOGIC_ERR,"LibAV or LibAVState is null");const[s,a]=ui(di(U.fromUS(e),this._libAVState.streams[r].time_base_den,this._libAVState.streams[r].time_base_num)),i=this._libAVState.streams[r].codec_type===this._libav.AVMEDIA_TYPE_VIDEO,o=this._libav.AVSEEK_FLAG_BACKWARD|(i?0:this._libav.AVSEEK_FLAG_ANY),c=await this._libav.av_seek_frame(this._libAVState.fmt_ctx,r,a,s,o);if(c<0)throw C(i?V.VIDEO_FORMAT_ERR:V.AUDIO_FORMAT_ERR,`error in av_seek_frame: [${c}] 
28        ff_error: ${await this._libav.ff_error(c)}
29        strerror: ${await this._libav.strerror(c)}`)})}async readPackets(e,r){return this._handleErrorAsync("readPackets",async()=>{if(!this._libav||!this._libAVState)throw C(V.LOGIC_ERR,"LibAV or LibAVState is null");const[s,a]=await this._libav.ff_read_frame_multi(this._libAVState.fmt_ctx,this._libAVState.pkt,{index:e,limit:r});if(s<0&&s!==-this._libav.EAGAIN&&s!==this._libav.AVERROR_EOF){const c=this._libAVState.streams[e].codec_type===this._libav.AVMEDIA_TYPE_VIDEO;throw C(c?V.VIDEO_FORMAT_ERR:V.AUDIO_FORMAT_ERR,`error in ff_read_frame_multi: [${s}] 
30        ff_error: ${await this._libav.ff_error(s)}
31        strerror: ${await this._libav.strerror(s)}`)}const i=a[e]??[];return[s===this._libav.AVERROR_EOF,i]})}async readPacketsPtr(e,r){return this._handleErrorAsync("readPacketsPtr",async()=>{if(!this._libav||!this._libAVState)throw C(V.LOGIC_ERR,"LibAV or LibAVState is null");const[s,a]=await this._libav.ff_read_frame_multi(this._libAVState.fmt_ctx,this._libAVState.pkt,{index:e,limit:r,copyoutPacket:"ptr"}),i=a[e]??[],o=s===this._libav.AVERROR_EOF;if(s<0&&s!==-this._libav.EAGAIN&&s!==this._libav.AVERROR_EOF){const c=this._libAVState.streams[e].codec_type===this._libav.AVMEDIA_TYPE_VIDEO;throw C(c?V.VIDEO_FORMAT_ERR:V.AUDIO_FORMAT_ERR,`error in ff_read_frame_multi: [${s}] 
32        ff_error: ${await this._libav.ff_error(s)}
33        strerror: ${await this._libav.strerror(s)}`)}return[o,i]})}_handleError(e,r){try{return r()}catch(s){throw this._lastError=s,this._logger.error(null,`error while ${e}`,C(void 0,s).message),s}}async _handleErrorAsync(e,r){try{return await r()}catch(s){throw this._lastError=s,this._logger.error(null,`error while ${e}`,C(void 0,s).message),s}}}const Ti="3c00a4f8";let At=null,ht=null,Ae=null;const ca=Ti,Si=async()=>{if(At&&ht)return{mjsUrl:At,wasmUrl:ht};if(Ae)return Ae.promise();Ae=new je,Ae.promise();try{const t="/try/",e=new URL(`${t}libav/libav-vrew-${ca}.mjs`,import.meta.url).href,r=new URL(`${t}libav/libav-vrew-${ca}.wasm`,import.meta.url).href,[s,a]=await Promise.all([ra(e),ra(r)]);At=URL.createObjectURL(s),ht=URL.createObjectURL(a);const i={mjsUrl:At,wasmUrl:ht};return Ae.resolve(i),i}catch(t){throw Ae&&Ae.reject(t),t}finally{Ae=null}},Ri=8;class Ii{_logger;_libavSession;_queue;_packets=[];_context=null;_config=null;_lastDecodedTime=null;_lastRequestedTime=null;_eof=!1;constructor(e,r){this._libavSession=e,this._queue=new ka,this._logger=r}get name(){return"libav"}get config(){if(this._config===null)throw C(V.AUDIO_LOGIC_ERR,"Decoder not initialized in LibAVAudioDecoder.config");return this._config}get context(){if(!this._context)throw C(V.AUDIO_LOGIC_ERR,"Decoder not initialized in LibAVAudioDecoder.context");return this._context}get lastDecodedTime(){return this._lastDecodedTime}

33async init(){return await this._configure(),this}reset=async()=>{await this._clear(),await this._configure()};async decode(e){if(this._needSeek(e))return await this._seek(e),this._startDecodeLoop(e);const r=this._queue.get(e);return r!==null?(this._lastRequestedTime=e,r):await this._startDecodeLoop(e)}destroy=async()=>{await this._clear()};_seek=async e=>{const r=this.context.stream.index,{codec:s,sampleRate:a}=this.config,i=Ua(s,a),o=Math.max(e-i,0);await It(this._libavSession.seekFrame(o,r),3e3,()=>{this._logger.verbose(e,`seeking to ${o} not finished after 3 seconds`)}),await this._flushDecoder()};_needSeek=e=>{if(this._lastRequestedTime===null||this._lastDecodedTime===null)return!0;const r=e<this._lastRequestedTime;return e>this._lastDecodedTime||r};async _startDecodeLoop(e){this._lastRequestedTime=e;const r=this._libavSession.libav,{index:s}=this.context.stream;if(this._packets.length===0){const[o,c]=await this._libavSession.readPacketsPtr(s,65536);if(this._packets.push(...c),o&&(this._eof=!0),o&&c.length===0)return null}const a=this._packets.splice(0,Ri),i=await r.ff_decode_multi(this.context.codec_ctx,this.context.pkt,this.context.frame,a,{ignoreErrors:!0,copyoutFrame:"ptr",fin:this._eof&&this._packets.length===0});for(const o of i){const c=await this._toAudioFrame(o,e);c&&(this._lastDecodedTime=c.timestamp+c.duration,this._queue.push(c))}return this._queue.get(e)}async _resetState(){this._lastDecodedTime=null,this._lastRequestedTime=null,this._eof=!1;const e=this._packets.splice(0,this._packets.length);this._queue.clear(),e.length!==0&&await li(this._libavSession.libav,e)}async _flushDecoder(){if(!this._context)return;await this._libavSession.libav.avcodec_flush_buffers(this._context.codec_ctx),await this._resetState()}_clear=async()=>{if(this._context)try{await this._libavSession.libav.ff_free_decoder(this._context.codec_ctx,this._context.pkt,this._context.frame)}finally{this._context=null,this._config=null,await this._resetState()}};async _getTimestampAndDuration(e){if(!this._context)throw C(V.AUDIO_LOGIC_ERR,"Decoder not initialized in LibAVAudioDecoder._getTimestampAndDuration()");const r=this._libavSession.libav,s=this._context.stream.time_base_num,a=this._context.stream.time_base_den,i=await r.AVFrame_pts(e),o=await r.AVFrame_ptshi(e),c=await r.AVFrame_duration(e),u=await r.AVFrame_durationhi(e),m=ve(Te(o,i),s,a).as.us("floor"),h=ve(Te(u,c),s,a).as.us("floor");return[m,h]}async _toAudioFrame(e,r){const s=this._libavSession.libav,[a,i]=await this._getTimestampAndDuration(e);if(a+i<r&&!this._eof)return await s.av_frame_free_js(e),null;const o=await s.ff_copyout_frame(e);await s.av_frame_free_js(e);const c=gi(o),u=ve(Te(o.ptshi,o.pts),this.context.stream.time_base_num,this.context.stream.time_base_den).as.us("round");return new qe({data:c,sampleRate:o.sample_rate,timestamp:u})}_configure=async()=>{try{const e=this._libavSession.libav,r=await this._libavSession.getAudioStream(),[,s,a,i]=await e.ff_init_decoder(r.codec_id,{codecpar:r.codecpar,time_base:[r.time_base_num,r.time_base_den]});this._context={stream:r,codec_ctx:s,pkt:a,frame:i},this._config=await Ga(e,r),this._queue.init(this._config.sampleRate)}catch(e){throw C(V.AUDIO_DECODER_CONFIG_ERR,e,"Failed to configure libav decoder")}}}const gi=t=>{const e=t.channels,r=t.nb_samples;switch(t.format){case L.AV_SAMPLE_FMT_FLT:return pt(t.data,e,r);case L.AV_SAMPLE_FMT_S32:return pt(t.data,e,r);case L.AV_SAMPLE_FMT_S16:return pt(t.data,e,r);case L.AV_SAMPLE_FMT_U8:return pt(t.data,e,r);case L.AV_SAMPLE_FMT_FLTP:return t.data;case L.AV_SAMPLE_FMT_S32P:return t.data;case L.AV_SAMPLE_FMT_S16P:return t.data;case L.AV_SAMPLE_FMT_U8P:return t.data;default:throw C(V.AUDIO_DECODE_ERR,`Invalid decoded frame format on getFrameData() ${t.format}`)}},pt=(t,e,r)=>{const s=[];for(let a=0;a<e;a++){let i;t instanceof Int32Array?i=new Int32Array(r):t instanceof Int16Array?i=new Int16Array(r):t instanceof Uint8Array?i=new Uint8Array(r):i=new Float32Array(r);for(let o=0,c=a;o<r;o++,c+=e)i[o]=t[c];s.push(i)}return s},Pi=5e3;let Oi=class{_session=null;_logger=null;_factories=[];_current=null;_state="idle";get decoderName(){return this._current?.name??"none"}get config(){if(!this._current)throw C(V.AUDIO_LOGIC_ERR,"Decoder not initialized in AudioDecoder.config");return this._current.config}get state(){return this._state}init=async(e,r)=>{if(this._logger=r,this._session)this._session.lastError?this._logger.warn(null,`trying to reuse error-occurred libAVSession : ${this._session.lastError}`):this._logger.verbose(null,"clear existing libav session"),await this._session.clear(),this._state="session_cleared",this._logger.verbose(null,"libav session cleared");else{const{mjsUrl:a,wasmUrl:i}=await Si();this._state="libav_initialized",this._logger.verbose(null,"create new libav session"),this._session=new Ci(a,i,this._logger),await this._session.init(),this._state="session_initialized",this._logger.verbose(null,"libav session initialized")}e.kind==="uri"?(await this._session.openFileWithUri(e.uri),this._logger.verbose(null,"opened file with uri")):(await this._session.openFileWithBlob(e.blob),this._logger.verbose(null,"opened file with blob")),this._state="file_opened",this._factories.push(()=>new _i(this._session,r)),this._factories.push(()=>new Ii(this._session,r));let s=null;for(;this._factories.length>0;)try{const i=this._factories.shift()();return this._current=i,await this._current.init(),this._state="decoder_initialized",this}catch(a){s=a,await this._current?.destroy(),this._current=null;const i=C(void 0,a);if(i.type===V.AUDIO_DECODER_CONFIG_ERR)continue;throw i}throw C(V.AUDIO_DECODER_CONFIG_ERR,s,"Failed to initialize AudioDecoder")};decode=async(e,r)=>{if(!this._current)throw C(V.AUDIO_LOGIC_ERR,"Decoder not initialized in AudioDecoder.decode()");return It(this._decodeLoop(e,r),5e3,()=>this._logger?.warn(null,`[${this.decoderName}] _decodeLoop() is not finished after 5 seconds. last decoded time: ${this._current?.lastDecodedTime??"none"}`))};clear=async()=>{try{await this._current?.destroy(),await this._session?.clear()}finally{this._logger=null,this._current=null,this._factories.splice(0,this._factories.length),this._state="session_cleared"}};destroy=async()=>{try{await this._current?.destroy(),await this._session?.destroy()}finally{this._logger=null,this._current=null,this._factories.splice(0,this._factories.length),this._session=null,this._state="destroyed"}};_decodeLoop=async(e,r)=>{if(!this._current)throw C(V.AUDIO_LOGIC_ERR,"Decoder not initialized in AudioDecoder._decodeLoop");const{sampleRate:s,numberOfChannels:a}=this.config,i=$e(r,s),o=ir(a,i);let c=e,u=0;for(;u<i;){const m=await this._decode(c);if(m===null)break;const h=$e(c,s),A=$e(m.timestamp,s),l=Math.min(Math.max(0,A-h),i-u);if(u+=l,u>=i){m.close();break}const T=Math.max(0,h-A),g=Math.min(m.numberOfFrames-T,i-u);for(let b=0;b<a;b++)m.copyTo(o[b].subarray(u,u+g),{planeIndex:b,frameOffset:T,frameCount:g});c=m.timestamp+m.duration,u+=g,m.close()}return o};_decode=async e=>{if(!this._current)throw C(V.AUDIO_LOGIC_ERR,"Decoder not initialized in AudioDecoder._decode");const r=this._current;try{return await r.decode(e)}catch(s){this._logger?.warn(null,`[${r.name}] Failed to decode at ${e}

33us. try next... last decoded time: ${r.lastDecodedTime??"none"}, ${xe(s)}`);const a=await this._destroyCurrent(),i=this._factories.shift();if(!a||!i)throw s;const o=i();return this._current=await o.init(),this._decode(e)}};_destroyCurrent=async()=>{const e=this._current;if(this._current=null,!e)return!0;try{return await Zs(e.destroy(),Pi),!0}catch(r){return this._logger?.warn(null,`error while destroying ${e.name} decoder: ${xe(r)}`),!1}}};class Li{_decoder;_config=null;_source=null;_sourceId=null;_logger=null;get config(){if(!this._config)throw C(V.AUDIO_LOGIC_ERR,"Decoder not initialized in WebCodecsAudioRenderer.config");return this._config}constructor(){this._decoder=new Oi}get decoderState(){return this._decoder.state}init=async(e,r,s)=>(this._source=e,this._sourceId=r,this._logger=s,await It(this._decoder.init(this._source,s),3e3,()=>{this._logger?.warn(null,`decoder is not initialized after 3 seconds. state: ${this._decoder.state}`)}),this._config=this._decoder.config,this);render=async(e,r)=>{try{return await this._decoder.decode(e.as.us(),r.as.us())}catch(s){throw C(V.AUDIO_DECODE_ERR,s,`error occurred while rendering audio frame. sourceId: ${this._sourceId}, at: ${e.as.us()} us`)}};clear=async()=>{await this._decoder.clear(),this._config=null,this._source=null,this._sourceId=null,this._logger=null};destroy=async()=>{await this._decoder.destroy(),this._source=null,this._sourceId=null,this._logger=null,this._config=null}}let ae=null;const bi=async(t,e,r,s=!1,a=!1)=>{if(!ae){const i=xa(r,s,a);ae=new Ya(t,e,i)}await ae.init()},wi=async(t,e,r,s=!1,a=!1)=>{const i=xa(r,s,a);if(!ae){ae=new Ya(t,e,i),await ae.init();return}await ae.reset(t,e,i)},yi=async(t,e,r,s,a)=>{if(ae===null)throw new Error("MediaSourceAudioReaderWorker is not initialized");const i=await ae.readAudio(t,e,r,s,a);return Un(i,i.map(o=>o.buffer))},Di=async()=>{try{await ae?.destroy()}finally{ae=null,globalThis.close()}};let Ya=class{_audioRenderer=new Li;_audioChannelMixer;_logger;_readQueue=Promise.resolve();_infoId;_source;constructor(e,r,s){this._logger=s,this._infoId=e,this._source=r,this._audioChannelMixer=new Fn}

33async init(){await this._audioRenderer.init(this._source,this._infoId,this._logger)}async reset(e,r,s){await this.clear(),this._infoId=e,this._source=r,this._logger=s,await this.init()}async readAudio(e,r,s,a,i){const o=async()=>{const u=U.fromMS(e),m=this._audioRenderer.config.sampleRate,h=await this._audioRenderer.render(u,U.fromMS(r)),A=this._audioChannelMixer.process({timelineIndex:Js(u,m),sampleRate:m,data:h},a),l=i!==1;let T=[A];if(l){const w=new Xn;T=w.process(A,i),T.push(...w.flush())}const g=new vn({sampleRate:s}),b=T.map(w=>g.process(w)).flat();return b.push(...g.flush()),kn(b)},c=this._readQueue.catch(()=>{}).then(o);return this._readQueue=c,c}async clear(){await this._readQueue.catch(()=>{}),await this._audioRenderer.clear()}async destroy(){await this._readQueue.catch(()=>{}),await this._audioRenderer.destroy()}};var Fi=Object.freeze({__proto__:null,destroy:Di,init:bi,readAudio:yi,reset:wi});_r(Fi);
34//# sourceMappingURL=mediaSourceAudioReader.worker-DURWn3HP.js.map