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convert flacs to aac for streaming

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Gregor Lohaus
2026-06-16 12:49:30 +02:00
parent f5e8b87846
commit 7aa1746f97
12 changed files with 401 additions and 8 deletions
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public/ffmpeg/worker.js Normal file
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var C="https://unpkg.com/@ffmpeg/core@0.12.9/dist/umd/ffmpeg-core.js",N;(function(E){E.LOAD="LOAD",E.EXEC="EXEC",E.FFPROBE="FFPROBE",E.WRITE_FILE="WRITE_FILE",E.READ_FILE="READ_FILE",E.DELETE_FILE="DELETE_FILE",E.RENAME="RENAME",E.CREATE_DIR="CREATE_DIR",E.LIST_DIR="LIST_DIR",E.DELETE_DIR="DELETE_DIR",E.ERROR="ERROR",E.DOWNLOAD="DOWNLOAD",E.PROGRESS="PROGRESS",E.LOG="LOG",E.MOUNT="MOUNT",E.UNMOUNT="UNMOUNT"})(N||(N={}));var G=Error("unknown message type"),V=Error("ffmpeg is not loaded, call `await ffmpeg.load()` first"),b=Error("called FFmpeg.terminate()"),v=Error("failed to import ffmpeg-core.js");var I,X=async({coreURL:E,wasmURL:D,workerURL:O})=>{let S=!I;try{if(!E)E=C;importScripts(E)}catch{if(!E||E===C)E=C.replace("/umd/","/esm/");if(self.createFFmpegCore=(await import(E)).default,!self.createFFmpegCore)throw v}let A=E,x=D?D:E.replace(/.js$/g,".wasm"),B=O?O:E.replace(/.js$/g,".worker.js");return I=await self.createFFmpegCore({mainScriptUrlOrBlob:`${A}#${btoa(JSON.stringify({wasmURL:x,workerURL:B}))}`}),I.setLogger((W)=>self.postMessage({type:N.LOG,data:W})),I.setProgress((W)=>self.postMessage({type:N.PROGRESS,data:W})),S},Y=({args:E,timeout:D=-1})=>{I.setTimeout(D),I.exec(...E);let O=I.ret;return I.reset(),O},j=({args:E,timeout:D=-1})=>{I.setTimeout(D),I.ffprobe(...E);let O=I.ret;return I.reset(),O},J=({path:E,data:D})=>{return I.FS.writeFile(E,D),!0},$=({path:E,encoding:D})=>I.FS.readFile(E,{encoding:D}),q=({path:E})=>{return I.FS.unlink(E),!0},z=({oldPath:E,newPath:D})=>{return I.FS.rename(E,D),!0},H=({path:E})=>{return I.FS.mkdir(E),!0},K=({path:E})=>{let D=I.FS.readdir(E),O=[];for(let S of D){let A=I.FS.stat(`${E}/${S}`),x=I.FS.isDir(A.mode);O.push({name:S,isDir:x})}return O},Q=({path:E})=>{return I.FS.rmdir(E),!0},R=({fsType:E,options:D,mountPoint:O})=>{let S=E,A=I.FS.filesystems[S];if(!A)return!1;return I.FS.mount(A,D,O),!0},Z=({mountPoint:E})=>{return I.FS.unmount(E),!0};self.onmessage=async({data:{id:E,type:D,data:O}})=>{let S=[],A;try{if(D!==N.LOAD&&!I)throw V;switch(D){case N.LOAD:A=await X(O);break;case N.EXEC:A=Y(O);break;case N.FFPROBE:A=j(O);break;case N.WRITE_FILE:A=J(O);break;case N.READ_FILE:A=$(O);break;case N.DELETE_FILE:A=q(O);break;case N.RENAME:A=z(O);break;case N.CREATE_DIR:A=H(O);break;case N.LIST_DIR:A=K(O);break;case N.DELETE_DIR:A=Q(O);break;case N.MOUNT:A=R(O);break;case N.UNMOUNT:A=Z(O);break;default:throw G}}catch(x){self.postMessage({id:E,type:N.ERROR,data:x.toString()});return}if(A instanceof Uint8Array)S.push(A.buffer);self.postMessage({id:E,type:D,data:A},S)};