mirror of
https://github.com/arcodange-org/mediabunny.git
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3 lines
38 KiB
JavaScript
3 lines
38 KiB
JavaScript
"use strict";var Metamuxer=(()=>{var de=Object.defineProperty;var De=Object.getOwnPropertyDescriptor;var Fe=Object.getOwnPropertyNames;var _e=Object.prototype.hasOwnProperty;var Be=(i,s)=>{for(var e in s)de(i,e,{get:s[e],enumerable:!0})},Ie=(i,s,e,t)=>{if(s&&typeof s=="object"||typeof s=="function")for(let r of Fe(s))!_e.call(i,r)&&r!==e&&de(i,r,{get:()=>s[r],enumerable:!(t=De(s,r))||t.enumerable});return i};var Ne=i=>Ie(de({},"__esModule",{value:!0}),i);var _t={};Be(_t,{ArrayBufferTarget:()=>ue,AudioBufferSource:()=>Y,AudioDataSource:()=>X,CanvasSource:()=>K,FileSystemWritableFileStreamTarget:()=>le,MediaStreamAudioTrackSource:()=>L,MediaStreamVideoTrackSource:()=>q,MkvOutputFormat:()=>H,Mp4OutputFormat:()=>se,Output:()=>Z,StreamTarget:()=>_,Target:()=>M,VideoFrameSource:()=>j,WebMOutputFormat:()=>U});var ge=(i,s,e)=>{if(i==="avc"){let t=100;s<=768&&e<=432?t=66:s<=1920&&e<=1080&&(t=77);let 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Error(`Unhandled codec '${i}'.`)};function d(i){if(!i)throw new Error("Assertion failed.")}var P=i=>i&&i[i.length-1],O=i=>i>=0&&i<2**32,v=(i,s,e)=>{let t=0;for(let r=s;r<e;r++){let n=Math.floor(r/8),o=i[n],a=7-(r&7),u=(o&1<<a)>>a;t<<=1,t|=u}return t},ke=(i,s,e,t)=>{for(let r=s;r<e;r++){let n=Math.floor(r/8),o=i[n],a=7-(r&7);o&=~(1<<a),o|=(t&1<<e-r-1)>>e-r-1<<a,i[n]=o}},E=i=>i instanceof ArrayBuffer?new Uint8Array(i):new Uint8Array(i.buffer,i.byteOffset,i.byteLength);var V=class{constructor(s,e){this.connectedTrack=null;this.codec=s,this.metadata=e}ensureNotFinalizing(){if(this.connectedTrack?.output.finalizing)throw new Error("Cannot call digest after output has started finalizing.")}start(){}async flush(){}},B=class{constructor(s,e){this.connectedTrack=null;this.codec=s,this.metadata=e}ensureNotFinalizing(){if(this.connectedTrack?.output.finalizing)throw new Error("Cannot call digest after output has started finalizing.")}start(){}async flush(){}};var We=5,I=class{constructor(s,e){this.source=s;this.codecConfig=e;this.encoder=null;this.lastMultipleOfKeyFrameInterval=-1}digest(s){this.source.ensureNotFinalizing(),this.ensureEncoder(s),d(this.encoder);let e=Math.floor(s.timestamp/1e6/We);this.encoder.encode(s,{keyFrame:e!==this.lastMultipleOfKeyFrameInterval}),this.lastMultipleOfKeyFrameInterval=e}ensureEncoder(s){this.encoder||(this.encoder=new VideoEncoder({output:(e,t)=>this.source.connectedTrack?.output.muxer.addEncodedVideoChunk(this.source.connectedTrack,e,t),error:e=>console.error(e)}),this.encoder.configure({codec:ge(this.codecConfig.codec,s.codedWidth,s.codedHeight),width:s.codedWidth,height:s.codedHeight,bitrate:this.codecConfig.bitrate}))}async flush(){return this.encoder?.flush()}},j=class extends V{constructor(s,e={}){super(s.codec,e),this.encoder=new I(this,s)}digest(s){this.encoder.digest(s)}flush(){return this.encoder.flush()}},K=class extends V{constructor(e,t,r={}){super(t.codec,r);this.canvas=e;this.encoder=new 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AudioEncoder({output:(e,t)=>this.source.connectedTrack?.output.muxer.addEncodedAudioChunk(this.source.connectedTrack,e,t),error:e=>console.error(e)}),this.encoder.configure({codec:Te(this.codecConfig.codec,s.numberOfChannels,s.sampleRate),numberOfChannels:s.numberOfChannels,sampleRate:s.sampleRate,bitrate:this.codecConfig.bitrate}))}async flush(){return this.encoder?.flush()}},X=class extends B{constructor(s,e={}){super(s.codec,e),this.encoder=new N(this,s)}digest(s){this.encoder.digest(s)}flush(){return this.encoder.flush()}},Y=class extends B{constructor(e,t={}){super(e.codec,t);this.accumulatedFrameCount=0;this.encoder=new N(this,e)}digest(e){let t=e.numberOfChannels,r=e.sampleRate,n=e.length,o=new Float32Array(t*n);for(let u=0;u<t;u++){let c=e.getChannelData(u);o.set(c,u*n)}let a=new AudioData({format:"f32-planar",sampleRate:r,numberOfFrames:n,numberOfChannels:t,timestamp:Math.round(1e6*this.accumulatedFrameCount/r),data:o});this.encoder.digest(a),a.close(),this.accumulatedFrameCount+=n}flush(){return this.encoder.flush()}},L=class extends B{constructor(e,t,r={}){super(t.codec,r);this.track=e;this.abortController=null;this.encoder=new N(this,t)}start(){this.abortController=new AbortController;let e=new MediaStreamTrackProcessor({track:this.track}),t=new WritableStream({write:r=>{this.encoder.digest(r),r.close()}});e.readable.pipeTo(t,{signal:this.abortController.signal}).catch(r=>{r instanceof DOMException&&r.name==="AbortError"||console.error("Pipe error:",r)})}async flush(){this.abortController&&(this.abortController.abort(),this.abortController=null),await this.encoder.flush()}};var Z=class{constructor(s){this.tracks=[];this.started=!1;this.finalizing=!1;this.writer=s.target.createWriter(),this.muxer=s.format.createMuxer(this)}addTrack(s){if(this.started)throw new Error("Cannot add track after output has started.");if(s.connectedTrack)throw new Error("Source is already used for a track.");let e={id:this.tracks.length+1,output:this,type:s instanceof V?"video":"audio",source:s};this.muxer.beforeTrackAdd(e),this.tracks.push(e),s.connectedTrack=e}start(){if(this.started)throw new Error("Output already started.");this.started=!0,this.muxer.start();for(let s of this.tracks)s.source.start()}async finalize(){if(this.finalizing)throw new Error("Cannot call finalize twice.");this.finalizing=!0;let s=this.tracks.map(e=>e.source.flush());await Promise.all(s),this.muxer.finalize(),this.writer.flush(),this.writer.finalize()}};var f=new Uint8Array(8),y=new DataView(f.buffer),b=i=>[(i%256+256)%256],h=i=>(y.setUint16(0,i,!1),[f[0],f[1]]),Re=i=>(y.setInt16(0,i,!1),[f[0],f[1]]),ye=i=>(y.setUint32(0,i,!1),[f[1],f[2],f[3]]),l=i=>(y.setUint32(0,i,!1),[f[0],f[1],f[2],f[3]]),He=i=>(y.setInt32(0,i,!1),[f[0],f[1],f[2],f[3]]),z=i=>(y.setUint32(0,Math.floor(i/2**32),!1),y.setUint32(4,i,!1),[f[0],f[1],f[2],f[3],f[4],f[5],f[6],f[7]]),fe=i=>(y.setInt16(0,2**8*i,!1),[f[0],f[1]]),x=i=>(y.setInt32(0,2**16*i,!1),[f[0],f[1],f[2],f[3]]),ce=i=>(y.setInt32(0,2**30*i,!1),[f[0],f[1],f[2],f[3]]),T=(i,s=!1)=>{let e=Array(i.length).fill(null).map((t,r)=>i.charCodeAt(r));return s&&e.push(0),e},he=i=>{let s=null;for(let e of i)(!s||e.presentationTimestamp>s.presentationTimestamp)&&(s=e);return s},we=i=>{let s=i*(Math.PI/180),e=Math.cos(s),t=Math.sin(s);return[e,t,0,-t,e,0,0,0,1]},Se=we(0),Ae=i=>[x(i[0]),x(i[1]),ce(i[2]),x(i[3]),x(i[4]),ce(i[5]),x(i[6]),x(i[7]),ce(i[8])],p=(i,s,e)=>({type:i,contents:s&&new Uint8Array(s.flat(10)),children:e}),m=(i,s,e,t,r)=>p(i,[b(s),ye(e),t??[]],r),Oe=i=>{let s=512;return i.fragmented?p("ftyp",[T("iso5"),l(s),T("iso5"),T("iso6"),T("mp41")]):p("ftyp",[T("isom"),l(s),T("isom"),i.holdsAvc?T("avc1"):[],T("mp41")])},ee=i=>({type:"mdat",largeSize:i}),ve=i=>({type:"free",size:i}),W=(i,s,e=!1)=>p("moov",void 0,[$e(s,i),...i.map(t=>Qe(t,s)),e?bt(i):null]),$e=(i,s)=>{let e=k(Math.max(0,...s.filter(o=>o.samples.length>0).map(o=>{let a=he(o.samples);return a.presentationTimestamp+a.duration})),J),t=Math.max(...s.map(o=>o.track.id))+1,r=!O(i)||!O(e),n=r?z:l;return m("mvhd",+r,0,[n(i),n(i),l(J),n(e),x(1),fe(1),Array(10).fill(0),Ae(Se),Array(24).fill(0),l(t)])},Qe=(i,s)=>p("trak",void 0,[Ge(i,s),je(i,s)]),Ge=(i,s)=>{let e=he(i.samples),t=k(e?e.presentationTimestamp+e.duration:0,J),r=!O(s)||!O(t),n=r?z:l,o;if(i.type==="video"){let a=i.track.source.metadata.rotation;o=a===void 0||typeof a=="number"?we(a??0):a}else o=Se;return m("tkhd",+r,3,[n(s),n(s),l(i.track.id),l(0),n(t),Array(8).fill(0),h(0),h(0),fe(i.type==="audio"?1:0),h(0),Ae(o),x(i.type==="video"?i.info.width:0),x(i.type==="video"?i.info.height:0)])},je=(i,s)=>p("mdia",void 0,[Ke(i,s),qe(i.type==="video"?"vide":"soun"),Xe(i)]),Ke=(i,s)=>{let e=he(i.samples),t=k(e?e.presentationTimestamp+e.duration:0,i.timescale),r=!O(s)||!O(t),n=r?z:l;return m("mdhd",+r,0,[n(s),n(s),l(i.timescale),n(t),h(21956),h(0)])},qe=i=>m("hdlr",0,0,[T("mhlr"),T(i),l(0),l(0),l(0),T("mp4-muxer-hdlr",!0)]),Xe=i=>p("minf",void 0,[i.type==="video"?Ye():Le(),Ze(),tt(i)]),Ye=()=>m("vmhd",0,1,[h(0),h(0),h(0),h(0)]),Le=()=>m("smhd",0,0,[h(0),h(0)]),Ze=()=>p("dinf",void 0,[Je()]),Je=()=>m("dref",0,0,[l(1)],[et()]),et=()=>m("url ",0,1),tt=i=>{let s=i.compositionTimeOffsetTable.length>1||i.compositionTimeOffsetTable.some(e=>e.sampleCompositionTimeOffset!==0);return p("stbl",void 0,[rt(i),dt(i),ct(i),ft(i),ht(i),mt(i),s?pt(i):null])},rt=i=>m("stsd",0,0,[l(1)],[i.type==="video"?it(At[i.track.source.codec],i):at(vt[i.track.source.codec],i)]),it=(i,s)=>p(i,[Array(6).fill(0),h(1),h(0),h(0),Array(12).fill(0),h(s.info.width),h(s.info.height),l(4718592),l(4718592),l(0),h(1),Array(32).fill(0),h(24),Re(65535)],[Ot[s.track.source.codec](s)]),st=i=>i.info.decoderConfig&&p("avcC",[...E(i.info.decoderConfig.description)]),nt=i=>i.info.decoderConfig&&p("hvcC",[...E(i.info.decoderConfig.description)]),xe=i=>{if(!i.info.decoderConfig)return null;let s=i.info.decoderConfig;if(!s.colorSpace)throw new Error("'colorSpace' is required in the decoder config for VP8/VP9.");let e=s.codec.split("."),t=Number(e[1]),r=Number(e[2]),a=(Number(e[3])<<4)+(0<<1)+Number(s.colorSpace.fullRange);return m("vpcC",1,0,[b(t),b(r),b(a),b(2),b(2),b(2),h(0)])},ot=()=>{let e=(1<<7)+1;return p("av1C",[e,0,0,0])},at=(i,s)=>p(i,[Array(6).fill(0),h(1),h(0),h(0),l(0),h(s.info.numberOfChannels),h(16),h(0),h(0),x(s.info.sampleRate)],[Vt[s.track.source.codec](s)]),ut=i=>{let s=E(i.info.decoderConfig.description??new ArrayBuffer(0));return m("esds",0,0,[l(58753152),b(32+s.byteLength),h(1),b(0),l(75530368),b(18+s.byteLength),b(64),b(21),ye(0),l(130071),l(130071),l(92307584),b(s.byteLength),...s,l(109084800),b(1),b(2)])},lt=i=>{let s=3840,e=0,t=i.info.decoderConfig?.description;if(t){if(t.byteLength<18)throw new TypeError("Invalid decoder description provided for Opus; must be at least 18 bytes long.");let r=ArrayBuffer.isView(t)?new DataView(t.buffer,t.byteOffset,t.byteLength):new DataView(t);s=r.getUint16(10,!0),e=r.getInt16(14,!0)}return p("dOps",[b(0),b(i.info.numberOfChannels),h(s),l(i.info.sampleRate),fe(e),b(0)])},dt=i=>m("stts",0,0,[l(i.timeToSampleTable.length),i.timeToSampleTable.map(s=>[l(s.sampleCount),l(s.sampleDelta)])]),ct=i=>{if(i.samples.every(e=>e.type==="key"))return null;let s=[...i.samples.entries()].filter(([,e])=>e.type==="key");return m("stss",0,0,[l(s.length),s.map(([e])=>l(e+1))])},ft=i=>m("stsc",0,0,[l(i.compactlyCodedChunkTable.length),i.compactlyCodedChunkTable.map(s=>[l(s.firstChunk),l(s.samplesPerChunk),l(1)])]),ht=i=>m("stsz",0,0,[l(0),l(i.samples.length),i.samples.map(s=>l(s.size))]),mt=i=>i.finalizedChunks.length>0&&P(i.finalizedChunks).offset>=2**32?m("co64",0,0,[l(i.finalizedChunks.length),i.finalizedChunks.map(s=>z(s.offset))]):m("stco",0,0,[l(i.finalizedChunks.length),i.finalizedChunks.map(s=>l(s.offset))]),pt=i=>m("ctts",0,0,[l(i.compositionTimeOffsetTable.length),i.compositionTimeOffsetTable.map(s=>[l(s.sampleCount),l(s.sampleCompositionTimeOffset)])]),bt=i=>p("mvex",void 0,i.map(Ct)),Ct=i=>m("trex",0,0,[l(i.track.id),l(1),l(0),l(0),l(0)]),me=(i,s)=>p("moof",void 0,[gt(i),...s.map(Tt)]),gt=i=>m("mfhd",0,0,[l(i)]),Ve=i=>{let s=0,e=0,t=0,r=0,n=i.type==="delta";return e|=+n,n?s|=1:s|=2,s<<24|e<<16|t<<8|r},Tt=i=>p("traf",void 0,[kt(i),xt(i),yt(i)]),kt=i=>{d(i.currentChunk);let s=0;s|=8,s|=16,s|=32,s|=131072;let e=i.currentChunk.samples[1]??i.currentChunk.samples[0],t={duration:e.timescaleUnitsToNextSample,size:e.size,flags:Ve(e)};return m("tfhd",0,s,[l(i.track.id),l(t.duration),l(t.size),l(t.flags)])},xt=i=>(d(i.currentChunk),m("tfdt",1,0,[z(k(i.currentChunk.startTimestamp,i.timescale))])),yt=i=>{d(i.currentChunk);let s=i.currentChunk.samples.map(w=>w.timescaleUnitsToNextSample),e=i.currentChunk.samples.map(w=>w.size),t=i.currentChunk.samples.map(Ve),r=i.currentChunk.samples.map(w=>k(w.presentationTimestamp-w.decodeTimestamp,i.timescale)),n=new Set(s),o=new Set(e),a=new Set(t),u=new Set(r),c=a.size===2&&t[0]!==t[1],C=n.size>1,g=o.size>1,S=!c&&a.size>1,Ce=u.size>1||[...u].some(w=>w!==0),A=0;return A|=1,A|=4*+c,A|=256*+C,A|=512*+g,A|=1024*+S,A|=2048*+Ce,m("trun",1,A,[l(i.currentChunk.samples.length),l(i.currentChunk.offset-i.currentChunk.moofOffset||0),c?l(t[0]):[],i.currentChunk.samples.map((w,G)=>[C?l(s[G]):[],g?l(e[G]):[],S?l(t[G]):[],Ce?He(r[G]):[]])])},ze=i=>p("mfra",void 0,[...i.map(wt),St()]),wt=(i,s)=>m("tfra",1,0,[l(i.track.id),l(63),l(i.finalizedChunks.length),i.finalizedChunks.map(t=>[z(k(t.startTimestamp,i.timescale)),z(t.moofOffset),l(s+1),l(1),l(1)])]),St=()=>m("mfro",0,0,[l(0)]),At={avc:"avc1",hevc:"hvc1",vp8:"vp08",vp9:"vp09",av1:"av01"},Ot={avc:st,hevc:nt,vp8:xe,vp9:xe,av1:ot},vt={aac:"mp4a",opus:"Opus"},Vt={aac:ut,opus:lt};var D=class{constructor(s){this.output=s}beforeTrackAdd(s){}};var J=1e3,zt=2082844800,k=(i,s,e=!0)=>{let t=i*s;return e?Math.round(t):t},te=class extends D{constructor(e,t){super(e);this.#i=new Uint8Array(8);this.#t=new DataView(this.#i.buffer);this.offsets=new WeakMap;this.#o=null;this.#n=null;this.#s=[];this.#a=Math.floor(Date.now()/1e3)+zt;this.#l=[];this.#f=1;this.#e=e.writer,this.#r=t}#e;#r;#i;#t;#o;#n;#s;#a;#l;#f;writeU32(e){this.#t.setUint32(0,e,!1),this.#e.write(this.#i.subarray(0,4))}writeU64(e){this.#t.setUint32(0,Math.floor(e/2**32),!1),this.#t.setUint32(4,e,!1),this.#e.write(this.#i.subarray(0,8))}writeAscii(e){for(let t=0;t<e.length;t++)this.#t.setUint8(t%8,e.charCodeAt(t)),t%8===7&&this.#e.write(this.#i);e.length%8!==0&&this.#e.write(this.#i.subarray(0,e.length%8))}writeBox(e){if(this.offsets.set(e,this.#e.getPos()),e.contents&&!e.children)this.writeBoxHeader(e,e.size??e.contents.byteLength+8),this.#e.write(e.contents);else{let t=this.#e.getPos();if(this.writeBoxHeader(e,0),e.contents&&this.#e.write(e.contents),e.children)for(let o of e.children)o&&this.writeBox(o);let 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t.written)this.#r.options.onData?.(t.data.subarray(r.start,r.end),t.start+r.start);this.#t.splice(e--,1)}}}flush(){}finalize(){this.#a(!0)}},ae=class extends Q{constructor(s){super(new _({onData:(e,t)=>s.stream.write({type:"write",data:e,position:t}),chunkSize:s.options?.chunkSize}))}};var Ft=Symbol("isTarget");Ft;var M=class{},ue=class extends M{constructor(){super(...arguments);this.buffer=null}createWriter(){return new ne(this)}},_=class extends M{constructor(e){super();this.options=e;if(typeof e!="object")throw new TypeError("StreamTarget requires an options object to be passed to its constructor.");if(e.onData){if(typeof e.onData!="function")throw new TypeError("options.onData, when provided, must be a function.");if(e.onData.length<2)throw new TypeError("options.onData, when provided, must be a function that takes in at least two arguments (data and position). 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if (typeof module === "object" && typeof module.exports === "object") Object.assign(module.exports, Metamuxer)
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