libav.js
Version:
A compilation of the libraries associated with handling audio and video in ffmpeg—libavformat, libavcodec, libavfilter, libavutil and libswresample—for WebAssembly and asm.js, and thus the web.
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JavaScript
/*!
* libav.js v6.5.7.1
*
* This software is compiled from several sources, the licenses for which are
* included herein.
*
* ---
*
* ffmpeg:
*
* Copyright (c) 2000-2024 Fabrice Bellard et al
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prefix+path};var moduleOverrides=Object.assign({},Module);var arguments_=[];var thisProgram="./this.program";var quit_=(status,toThrow)=>{throw toThrow};var scriptDirectory="";function locateFile(path){if(Module["locateFile"]){return Module["locateFile"](path,scriptDirectory)}return scriptDirectory+path}var readAsync,readBinary;if(ENVIRONMENT_IS_NODE){var fs=require("fs");var nodePath=require("path");if(!import.meta.url.startsWith("data:")){scriptDirectory=nodePath.dirname(require("url").fileURLToPath(import.meta.url))+"/"}readBinary=filename=>{filename=isFileURI(filename)?new URL(filename):nodePath.normalize(filename);var ret=fs.readFileSync(filename);return ret};readAsync=(filename,binary=true)=>{filename=isFileURI(filename)?new URL(filename):nodePath.normalize(filename);return new Promise((resolve,reject)=>{fs.readFile(filename,binary?undefined:"utf8",(err,data)=>{if(err)reject(err);else resolve(binary?data.buffer:data)})})};if(!Module["thisProgram"]&&process.argv.length>1){thisProgram=process.argv[1].replace(/\\/g,"/")}arguments_=process.argv.slice(2);quit_=(status,toThrow)=>{process.exitCode=status;throw toThrow}}else if(ENVIRONMENT_IS_WEB||ENVIRONMENT_IS_WORKER){if(ENVIRONMENT_IS_WORKER){scriptDirectory=self.location.href}else if(typeof document!="undefined"&&document.currentScript){scriptDirectory=document.currentScript.src}if(_scriptName){scriptDirectory=_scriptName}if(scriptDirectory.startsWith("blob:")){scriptDirectory=""}else{scriptDirectory=scriptDirectory.substr(0,scriptDirectory.replace(/[?#].*/,"").lastIndexOf("/")+1)}if(!ENVIRONMENT_IS_NODE){if(ENVIRONMENT_IS_WORKER){readBinary=url=>{var xhr=new XMLHttpRequest;xhr.open("GET",url,false);xhr.responseType="arraybuffer";xhr.send(null);return new Uint8Array(xhr.response)}}readAsync=url=>{if(isFileURI(url)){return new Promise((resolve,reject)=>{var xhr=new XMLHttpRequest;xhr.open("GET",url,true);xhr.responseType="arraybuffer";xhr.onload=()=>{if(xhr.status==200||xhr.status==0&&xhr.response){resolve(xhr.response);return}reject(xhr.status)};xhr.onerror=reject;xhr.send(null)})}return fetch(url,{credentials:"same-origin"}).then(response=>{if(response.ok){return response.arrayBuffer()}return Promise.reject(new Error(response.status+" : "+response.url))})}}}else{}var defaultPrint=console.log.bind(console);var defaultPrintErr=console.error.bind(console);if(ENVIRONMENT_IS_NODE){defaultPrint=(...args)=>fs.writeSync(1,args.join(" ")+"\n");defaultPrintErr=(...args)=>fs.writeSync(2,args.join(" ")+"\n")}var out=Module["print"]||defaultPrint;var err=Module["printErr"]||defaultPrintErr;Object.assign(Module,moduleOverrides);moduleOverrides=null;if(Module["arguments"])arguments_=Module["arguments"];if(Module["thisProgram"])thisProgram=Module["thisProgram"];var wasmBinary=Module["wasmBinary"];var wasmMemory;var wasmModule;var ABORT=false;var EXITSTATUS;var HEAP8,HEAPU8,HEAP16,HEAPU16,HEAP32,HEAPU32,HEAPF32,HEAPF64;function updateMemoryViews(){var b=wasmMemory.buffer;Module["HEAP8"]=HEAP8=new Int8Array(b);Module["HEAP16"]=HEAP16=new Int16Array(b);Module["HEAPU8"]=HEAPU8=new Uint8Array(b);Module["HEAPU16"]=HEAPU16=new Uint16Array(b);Module["HEAP32"]=HEAP32=new Int32Array(b);Module["HEAPU32"]=HEAPU32=new Uint32Array(b);Module["HEAPF32"]=HEAPF32=new Float32Array(b);Module["HEAPF64"]=HEAPF64=new Float64Array(b)}if(ENVIRONMENT_IS_PTHREAD){var wasmPromiseResolve;var wasmPromiseReject;if(ENVIRONMENT_IS_NODE){var parentPort=worker_threads["parentPort"];parentPort.on("message",msg=>onmessage({data:msg}));Object.assign(globalThis,{self:global,importScripts:()=>{},postMessage:msg=>parentPort.postMessage(msg)})}var initializedJS=false;function threadPrintErr(...args){var text=args.join(" ");if(ENVIRONMENT_IS_NODE){fs.writeSync(2,text+"\n");return}console.error(text)}if(!Module["printErr"])err=threadPrintErr;function threadAlert(...args){var text=args.join(" ");postMessage({cmd:"alert",text,threadId:_pthread_self()})}self.alert=threadAlert;Module["instantiateWasm"]=(info,receiveInstance)=>new Promise((resolve,reject)=>{wasmPromiseResolve=module=>{var instance=new WebAssembly.Instance(module,getWasmImports());receiveInstance(instance);resolve()};wasmPromiseReject=reject});self.onunhandledrejection=e=>{throw e.reason||e};function handleMessage(e){try{var msgData=e["data"];var cmd=msgData.cmd;if(cmd==="load"){let messageQueue=[];self.onmessage=e=>messageQueue.push(e);self.startWorker=instance=>{postMessage({cmd:"loaded"});for(let msg of messageQueue){handleMessage(msg)}self.onmessage=handleMessage};for(const handler of msgData.handlers){if(!Module[handler]||Module[handler].proxy){Module[handler]=(...args)=>{postMessage({cmd:"callHandler",handler,args})};if(handler=="print")out=Module[handler];if(handler=="printErr")err=Module[handler]}}wasmMemory=msgData.wasmMemory;updateMemoryViews();wasmPromiseResolve(msgData.wasmModule)}else if(cmd==="run"){establishStackSpace(msgData.pthread_ptr);__emscripten_thread_init(msgData.pthread_ptr,0,0,1,0,0);PThread.receiveObjectTransfer(msgData);PThread.threadInitTLS();__emscripten_thread_mailbox_await(msgData.pthread_ptr);if(!initializedJS){initializedJS=true}try{invokeEntryPoint(msgData.start_routine,msgData.arg)}catch(ex){if(ex!="unwind"){throw ex}}}else if(msgData.target==="setimmediate"){}else if(cmd==="checkMailbox"){if(initializedJS){checkMailbox()}}else if(cmd){err(`worker: received unknown command ${cmd}`);err(msgData)}}catch(ex){__emscripten_thread_crashed();throw ex}}self.onmessage=handleMessage}if(!ENVIRONMENT_IS_PTHREAD){if(Module["wasmMemory"]){wasmMemory=Module["wasmMemory"]}else{var INITIAL_MEMORY=Module["INITIAL_MEMORY"]||25165824;wasmMemory=new WebAssembly.Memory({initial:INITIAL_MEMORY/65536,maximum:32768,shared:true})}updateMemoryViews()}var __ATPRERUN__=[];var __ATINIT__=[];var __ATPOSTRUN__=[];var runtimeInitialized=false;function preRun(){var preRuns=Module["preRun"];if(preRuns){if(typeof preRuns=="function")preRuns=[preRuns];preRuns.forEach(addOnPreRun)}callRuntimeCallbacks(__ATPRERUN__)}function initRuntime(){runtimeInitialized=true;if(ENVIRONMENT_IS_PTHREAD)return;if(!Module["noFSInit"]&&!FS.initialized)FS.init();FS.ignorePermissions=false;TTY.init();callRuntimeCallbacks(__ATINIT__)}function postRun(){if(ENVIRONMENT_IS_PTHREAD)return;var postRuns=Module["postRun"];if(postRuns){if(typeof postRuns=="function")postRuns=[postRuns];postRuns.forEach(addOnPostRun)}callRuntimeCallbacks(__ATPOSTRUN__)}function addOnPreRun(cb){__ATPRERUN__.unshift(cb)}function addOnInit(cb){__ATINIT__.unshift(cb)}function addOnPostRun(cb){__ATPOSTRUN__.unshift(cb)}var runDependencies=0;var runDependencyWatcher=null;var dependenciesFulfilled=null;function getUniqueRunDependency(id){return id}function addRunDependency(id){runDependencies++;Module["monitorRunDependencies"]?.(runDependencies)}function removeRunDependency(id){runDependencies--;Module["monitorRunDependencies"]?.(runDependencies);if(runDependencies==0){if(runDependencyWatcher!==null){clearInterval(runDependencyWatcher);runDependencyWatcher=null}if(dependenciesFulfilled){var callback=dependenciesFulfilled;dependenciesFulfilled=null;callback()}}}function abort(what){Module["onAbort"]?.(what);what="Aborted("+what+")";err(what);ABORT=true;what+=". Build with -sASSERTIONS for more info.";var e=new WebAssembly.RuntimeError(what);readyPromiseReject(e);throw e}var dataURIPrefix="data:application/octet-stream;base64,";var isDataURI=filename=>filename.startsWith(dataURIPrefix);var isFileURI=filename=>filename.startsWith("file://");function findWasmBinary(){if(Module["locateFile"]){var f="libav-6.5.7.1-wav.thr.wasm";if(!isDataURI(f)){return locateFile(f)}return f}return new URL("libav-6.5.7.1-wav.thr.wasm",import.meta.url).href}var wasmBinaryFile;function getBinarySync(file){if(file==wasmBinaryFile&&wasmBinary){return new Uint8Array(wasmBinary)}if(readBinary){return readBinary(file)}throw"both async and sync fetching of the wasm failed"}function getBinaryPromise(binaryFile){if(!wasmBinary){return readAsync(binaryFile).then(response=>new Uint8Array(response),()=>getBinarySync(binaryFile))}return Promise.resolve().then(()=>getBinarySync(binaryFile))}function instantiateArrayBuffer(binaryFile,imports,receiver){return getBinaryPromise(binaryFile).then(binary=>WebAssembly.instantiate(binary,imports)).then(receiver,reason=>{err(`failed to asynchronously prepare wasm: ${reason}`);abort(reason)})}function instantiateAsync(binary,binaryFile,imports,callback){if(!binary&&typeof WebAssembly.instantiateStreaming=="function"&&!isDataURI(binaryFile)&&!isFileURI(binaryFile)&&!ENVIRONMENT_IS_NODE&&typeof fetch=="function"){return fetch(binaryFile,{credentials:"same-origin"}).then(response=>{var result=WebAssembly.instantiateStreaming(response,imports);return result.then(callback,function(reason){err(`wasm streaming compile failed: ${reason}`);err("falling back to ArrayBuffer instantiation");return instantiateArrayBuffer(binaryFile,imports,callback)})})}return instantiateArrayBuffer(binaryFile,imports,callback)}function getWasmImports(){assignWasmImports();return{a:wasmImports}}function createWasm(){var info=getWasmImports();function receiveInstance(instance,module){wasmExports=instance.exports;wasmExports=Asyncify.instrumentWasmExports(wasmExports);registerTLSInit(wasmExports["Wg"]);addOnInit(wasmExports["R"]);wasmModule=module;removeRunDependency("wasm-instantiate");return wasmExports}addRunDependency("wasm-instantiate");function receiveInstantiationResult(result){receiveInstance(result["instance"],result["module"])}if(Module["instantiateWasm"]){try{return Module["instantiateWasm"](info,receiveInstance)}catch(e){err(`Module.instantiateWasm callback failed with error: ${e}`);readyPromiseReject(e)}}wasmBinaryFile??=findWasmBinary();instantiateAsync(wasmBinary,wasmBinaryFile,info,receiveInstantiationResult).catch(readyPromiseReject);return{}}var tempDouble;var tempI64;function libavjs_main_thread(ignore){noExitRuntime=Module.noExitRuntime=true;var origOnmessage=onmessage;onmessage=function(ev){var a;function reply(succ,ret){var transfer=[];if(typeof ret==="object"&&ret&&ret.libavjsTransfer)transfer=ret.libavjsTransfer;postMessage({c:"libavjs_ret",a:[a[0],a[1],succ,ret]},transfer)}if(ev.data&&ev.data.c==="libavjs_run"){a=ev.data.a;var succ=true;var ret;try{ret=Module[a[1]].apply(Module,a.slice(2))}catch(ex){succ=false;ret=ex+"\n"+ex.stack}if(succ&&ret&&ret.then){ret.then(function(ret){reply(true,ret)}).catch(function(ret){reply(false,ret+"\n"+ret.stack)})}else{reply(succ,ret)}}else if(ev.data&&ev.data.c==="libavjs_wait_reader"){var name=""+ev.data.fd;var waiters=Module.ff_reader_dev_waiters[name]||[];delete Module.ff_reader_dev_waiters[name];for(var i=0;i<waiters.length;i++)waiters[i]()}else{return origOnmessage.apply(this,arguments)}};postMessage({c:"libavjs_ready"})}function writeoutEmscriptenOOM(){throw new Error("Out of memory")}function libavjs_wait_reader(fd){return Asyncify.handleAsync(function(){return new Promise(function(res){var name=""+fd;var waiters=Module.ff_reader_dev_waiters[name];if(!waiters)waiters=Module.ff_reader_dev_waiters[name]=[];waiters.push(res);postMessage({c:"libavjs_wait_reader",fd})})})}function ExitStatus(status){this.name="ExitStatus";this.message=`Program terminated with exit(${status})`;this.status=status}var terminateWorker=worker=>{worker.terminate();worker.onmessage=e=>{}};var cleanupThread=pthread_ptr=>{var worker=PThread.pthreads[pthread_ptr];PThread.returnWorkerToPool(worker)};var spawnThread=threadParams=>{var worker=PThread.getNewWorker();if(!worker){return 6}PThread.runningWorkers.push(worker);PThread.pthreads[threadParams.pthread_ptr]=worker;worker.pthread_ptr=threadParams.pthread_ptr;var msg={cmd:"run",start_routine:threadParams.startRoutine,arg:threadParams.arg,pthread_ptr:threadParams.pthread_ptr};if(ENVIRONMENT_IS_NODE){worker.unref()}worker.postMessage(msg,threadParams.transferList);return 0};var runtimeKeepaliveCounter=0;var keepRuntimeAlive=()=>noExitRuntime||runtimeKeepaliveCounter>0;var stackSave=()=>_emscripten_stack_get_current();var stackRestore=val=>__emscripten_stack_restore(val);var stackAlloc=sz=>__emscripten_stack_alloc(sz);var convertI32PairToI53Checked=(lo,hi)=>hi+2097152>>>0<4194305-!!lo?(lo>>>0)+hi*4294967296:NaN;var proxyToMainThread=(funcIndex,emAsmAddr,sync,...callArgs)=>{var serializedNumCallArgs=callArgs.length;var sp=stackSave();var args=stackAlloc(serializedNumCallArgs*8);var b=args>>3;for(var i=0;i<callArgs.length;i++){var arg=callArgs[i];GROWABLE_HEAP_F64()[b+i]=arg}var rtn=__emscripten_run_on_main_thread_js(funcIndex,emAsmAddr,serializedNumCallArgs,args,sync);stackRestore(sp);return rtn};function _proc_exit(code){if(ENVIRONMENT_IS_PTHREAD)return proxyToMainThread(0,0,1,code);EXITSTATUS=code;if(!keepRuntimeAlive()){PThread.terminateAllThreads();Module["onExit"]?.(code);ABORT=true}quit_(code,new ExitStatus(code))}var handleException=e=>{if(e instanceof ExitStatus||e=="unwind"){return EXITSTATUS}quit_(1,e)};function exitOnMainThread(returnCode){if(ENVIRONMENT_IS_PTHREAD)return proxyToMainThread(1,0,0,returnCode);_exit(returnCode)}var exitJS=(status,implicit)=>{EXITSTATUS=status;if(ENVIRONMENT_IS_PTHREAD){exitOnMainThread(status);throw"unwind"}_proc_exit(status)};var _exit=exitJS;var PThread={unusedWorkers:[],runningWorkers:[],tlsInitFunctions:[],pthreads:{},init(){if(!ENVIRONMENT_IS_PTHREAD){PThread.initMainThread()}},initMainThread(){var pthreadPoolSize=navigator.hardwareConcurrency;while(pthreadPoolSize--){PThread.allocateUnusedWorker()}addOnPreRun(()=>{addRunDependency("loading-workers");PThread.loadWasmModuleToAllWorkers(()=>removeRunDependency("loading-workers"))})},terminateAllThreads:()=>{for(var worker of PThread.runningWorkers){terminateWorker(worker)}for(var worker of PThread.unusedWorkers){terminateWorker(worker)}PThread.unusedWorkers=[];PThread.runningWorkers=[];PThread.pthreads=[]},returnWorkerToPool:worker=>{var pthread_ptr=worker.pthread_ptr;delete PThread.pthreads[pthread_ptr];PThread.unusedWorkers.push(worker);PThread.runningWorkers.splice(PThread.runningWorkers.indexOf(worker),1);worker.pthread_ptr=0;__emscripten_thread_free_data(pthread_ptr)},receiveObjectTransfer(data){},threadInitTLS(){PThread.tlsInitFunctions.forEach(f=>f())},loadWasmModuleToWorker:worker=>new Promise(onFinishedLoading=>{worker.onmessage=e=>{var d=e["data"];var cmd=d.cmd;if(d.targetThread&&d.targetThread!=_pthread_self()){var targetWorker=PThread.pthreads[d.targetThread];if(targetWorker){targetWorker.postMessage(d,d.transferList)}else{err(`Internal error! Worker sent a message "${cmd}" to target pthread ${d.targetThread}, but that thread no longer exists!`)}return}if(cmd==="checkMailbox"){checkMailbox()}else if(cmd==="spawnThread"){spawnThread(d)}else if(cmd==="cleanupThread"){cleanupThread(d.thread)}else if(cmd==="loaded"){worker.loaded=true;if(ENVIRONMENT_IS_NODE&&!worker.pthread_ptr){worker.unref()}onFinishedLoading(worker)}else if(cmd==="alert"){alert(`Thread ${d.threadId}: ${d.text}`)}else if(d.target==="setimmediate"){worker.postMessage(d)}else if(cmd==="callHandler"){Module[d.handler](...d.args)}else if(cmd){err(`worker sent an unknown command ${cmd}`)}};worker.onerror=e=>{var message="worker sent an error!";err(`${message} ${e.filename}:${e.lineno}: ${e.message}`);throw e};if(ENVIRONMENT_IS_NODE){worker.on("message",data=>worker.onmessage({data}));worker.on("error",e=>worker.onerror(e))}var handlers=[];var knownHandlers=["onExit","onAbort","print","printErr"];for(var handler of knownHandlers){if(Module.propertyIsEnumerable(handler)){handlers.push(handler)}}worker.postMessage({cmd:"load",handlers,wasmMemory,wasmModule})}),loadWasmModuleToAllWorkers(onMaybeReady){if(ENVIRONMENT_IS_PTHREAD){return onMaybeReady()}let pthreadPoolReady=Promise.all(PThread.unusedWorkers.map(PThread.loadWasmModuleToWorker));pthreadPoolReady.then(onMaybeReady)},allocateUnusedWorker(){var worker;var workerOptions={type:"module",workerData:"em-pthread",name:"em-pthread"};worker=new Worker(new URL("libav-6.5.7.1-wav.thr.mjs",import.meta.url),workerOptions);PThread.unusedWorkers.push(worker)},getNewWorker(){if(PThread.unusedWorkers.length==0){PThread.allocateUnusedWorker();PThread.loadWasmModuleToWorker(PThread.unusedWorkers[0])}return PThread.unusedWorkers.pop()}};var callRuntimeCallbacks=callbacks=>{callbacks.forEach(f=>f(Module))};var establishStackSpace=pthread_ptr=>{updateMemoryViews();var stackHigh=GROWABLE_HEAP_U32()[pthread_ptr+52>>2];var stackSize=GROWABLE_HEAP_U32()[pthread_ptr+56>>2];var stackLow=stackHigh-stackSize;_emscripten_stack_set_limits(stackHigh,stackLow);stackRestore(stackHigh)};var invokeEntryPoint=(ptr,arg)=>{runtimeKeepaliveCounter=0;noExitRuntime=0;var result=(a1=>dynCall_ii(ptr,a1))(arg);function finish(result){if(keepRuntimeAlive()){EXITSTATUS=result}else{__emscripten_thread_exit(result)}}finish(result)};var noExitRuntime=Module["noExitRuntime"]||true;var registerTLSInit=tlsInitFunc=>PThread.tlsInitFunctions.push(tlsInitFunc);function pthreadCreateProxied(pthread_ptr,attr,startRoutine,arg){if(ENVIRONMENT_IS_PTHREAD)return proxyToMainThread(2,0,1,pthread_ptr,attr,startRoutine,arg);return ___pthread_create_js(pthread_ptr,attr,startRoutine,arg)}var _emscripten_has_threading_support=()=>typeof SharedArrayBuffer!="undefined";var ___pthread_create_js=(pthread_ptr,attr,startRoutine,arg)=>{if(!_emscripten_has_threading_support()){return 6}var transferList=[];var error=0;if(ENVIRONMENT_IS_PTHREAD&&(transferList.length===0||error)){return pthreadCreateProxied(pthread_ptr,attr,startRoutine,arg)}if(error)return error;var threadParams={startRoutine,pthread_ptr,arg,transferList};if(ENVIRONMENT_IS_PTHREAD){threadParams.cmd="spawnThread";postMessage(threadParams,transferList);return 0}return spawnThread(threadParams)};var PATH={isAbs:path=>path.charAt(0)==="/",splitPath:filename=>{var splitPathRe=/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;return splitPathRe.exec(filename).slice(1)},normalizeArray:(parts,allowAboveRoot)=>{var up=0;for(var i=parts.length-1;i>=0;i--){var last=parts[i];if(last==="."){parts.splice(i,1)}else if(last===".."){parts.splice(i,1);up++}else if(up){parts.splice(i,1);up--}}if(allowAboveRoot){for(;up;up--){parts.unshift("..")}}return parts},normalize:path=>{var isAbsolute=PATH.isAbs(path),trailingSlash=path.substr(-1)==="/";path=PATH.normalizeArray(path.split("/").filter(p=>!!p),!isAbsolute).join("/");if(!path&&!isAbsolute){path="."}if(path&&trailingSlash){path+="/"}return(isAbs