Multithread AVIF PoC

codecs/avif/Makefile

@@ -53,7 +53,6 @@ LIBAOM_FLAGS = -DCMAKE_BUILD_TYPE=Release \
 	-DENABLE_TOOLS=0 \
 	-DCONFIG_ACCOUNTING=1 \
 	-DCONFIG_INSPECTION=0 \
-	-DCONFIG_MULTITHREAD=0 \
 	-DCONFIG_RUNTIME_CPU_DETECT=0 \
 	-DCONFIG_WEBM_IO=0
 
@@ -65,6 +64,7 @@ $(OUT_ENC_JS): $(OUT_ENC_CPP) $(LIBAOM_ENC_OUT) $(CODEC_ENC_OUT)
 	$(CXX) \
 		-I $(CODEC_ENC_DIR)/include \
 		${EMSCRIPTEN_FLAGS} \
+		-pthread \
 		-s 'EXPORT_NAME="$(basename $(@F))"' \
 		-o $@ \
 		$+
@@ -96,6 +96,7 @@ $(LIBAOM_ENC_OUT): $(LIBAOM_ENC_DIR)/CMakeLists.txt
 		$(LIBAOM_FLAGS) \
 		-DCONFIG_AV1_DECODER=0 \
 		-DCONFIG_AV1_HIGHBITDEPTH=0 \
+		-DCONFIG_MULTITHREAD=1 \
 		../ && \
 	$(MAKE)
 
@@ -105,6 +106,7 @@ $(LIBAOM_DEC_OUT): $(LIBAOM_DEC_DIR)/CMakeLists.txt
 	emcmake cmake \
 		$(LIBAOM_FLAGS) \
 		-DCONFIG_AV1_ENCODER=0 \
+		-DCONFIG_MULTITHREAD=0 \
 		../ && \
 	$(MAKE)
 

codecs/avif/enc/avif_enc.cpp

@@ -1,5 +1,6 @@
 #include <emscripten/bind.h>
 #include <emscripten/val.h>
+#include <emscripten/threading.h>
 #include "avif/avif.h"
 
 using namespace emscripten;
@@ -71,7 +72,7 @@ val encode(std::string buffer, int width, int height, AvifOptions options) {
   avifImageRGBToYUV(image, &srcRGB);
 
   avifEncoder* encoder = avifEncoderCreate();
-  encoder->maxThreads = 1;
+  encoder->maxThreads = emscripten_num_logical_cores();
   encoder->minQuantizer = options.minQuantizer;
   encoder->maxQuantizer = options.maxQuantizer;
   encoder->minQuantizerAlpha = options.minQuantizerAlpha;

codecs/avif/enc/avif_enc.js

@@ -7,97 +7,140 @@ function(avif_enc) {
   avif_enc = avif_enc || {};
 
 
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+z.dynCall_i=function(){return(z.dynCall_i=z.asm.fb).apply(null,arguments)};z.dynCall_iiiiii=function(){return(z.dynCall_iiiiii=z.asm.gb).apply(null,arguments)};z.dynCall_viiiii=function(){return(z.dynCall_viiiii=z.asm.hb).apply(null,arguments)};z.dynCall_v=function(){return(z.dynCall_v=z.asm.ib).apply(null,arguments)};z.dynCall_viiiiii=function(){return(z.dynCall_viiiiii=z.asm.jb).apply(null,arguments)};z.dynCall_viiiiiiii=function(){return(z.dynCall_viiiiiiii=z.asm.kb).apply(null,arguments)};
+z.dynCall_viiiiiii=function(){return(z.dynCall_viiiiiii=z.asm.lb).apply(null,arguments)};z.dynCall_viiiiiiiiiii=function(){return(z.dynCall_viiiiiiiiiii=z.asm.mb).apply(null,arguments)};z.dynCall_jiiiiiiiii=function(){return(z.dynCall_jiiiiiiiii=z.asm.nb).apply(null,arguments)};z.dynCall_iiiiiiii=function(){return(z.dynCall_iiiiiiii=z.asm.ob).apply(null,arguments)};z.dynCall_iiiiiii=function(){return(z.dynCall_iiiiiii=z.asm.pb).apply(null,arguments)};
+z.dynCall_iiiiiiiiiiii=function(){return(z.dynCall_iiiiiiiiiiii=z.asm.qb).apply(null,arguments)};z.dynCall_jiji=function(){return(z.dynCall_jiji=z.asm.rb).apply(null,arguments)};z.dynCall_iidiiii=function(){return(z.dynCall_iidiiii=z.asm.sb).apply(null,arguments)};z.dynCall_viiiiiiiiii=function(){return(z.dynCall_viiiiiiiiii=z.asm.tb).apply(null,arguments)};z.dynCall_viiiiiiiiiiiii=function(){return(z.dynCall_viiiiiiiiiiiii=z.asm.ub).apply(null,arguments)};
+z.dynCall_jiiiiiiii=function(){return(z.dynCall_jiiiiiiii=z.asm.vb).apply(null,arguments)};z.dynCall_ff=function(){return(z.dynCall_ff=z.asm.wb).apply(null,arguments)};z.dynCall_jiiiiii=function(){return(z.dynCall_jiiiiii=z.asm.xb).apply(null,arguments)};z.dynCall_jiiiii=function(){return(z.dynCall_jiiiii=z.asm.yb).apply(null,arguments)};z.dynCall_iiijii=function(){return(z.dynCall_iiijii=z.asm.zb).apply(null,arguments)};
+function Od(a,b,c){var d=Y();try{return ce(a,b,c)}catch(f){N(d);if(f!==f+0&&"longjmp"!==f)throw f;Z(1,0)}}function Ud(a,b){var c=Y();try{Cb(a,b)}catch(d){N(c);if(d!==d+0&&"longjmp"!==d)throw d;Z(1,0)}}function Wd(a,b,c,d,f){var g=Y();try{ae(a,b,c,d,f)}catch(h){N(g);if(h!==h+0&&"longjmp"!==h)throw h;Z(1,0)}}function Vd(a,b,c){var d=Y();try{$d(a,b,c)}catch(f){N(d);if(f!==f+0&&"longjmp"!==f)throw f;Z(1,0)}}
+function Nd(a,b){var c=Y();try{return be(a,b)}catch(d){N(c);if(d!==d+0&&"longjmp"!==d)throw d;Z(1,0)}}function Qd(a,b,c,d,f,g,h,l,k,q){var r=Y();try{return ee(a,b,c,d,f,g,h,l,k,q)}catch(t){N(r);if(t!==t+0&&"longjmp"!==t)throw t;Z(1,0)}}function Pd(a,b,c,d,f,g,h,l,k){var q=Y();try{return de(a,b,c,d,f,g,h,l,k)}catch(r){N(q);if(r!==r+0&&"longjmp"!==r)throw r;Z(1,0)}}function Td(a,b,c,d,f,g){var h=Y();try{return he(a,b,c,d,f,g)}catch(l){N(h);if(l!==l+0&&"longjmp"!==l)throw l;Z(1,0)}}
+function Rd(a,b,c,d,f,g,h,l){var k=Y();try{return fe(a,b,c,d,f,g,h,l)}catch(q){N(k);if(q!==q+0&&"longjmp"!==q)throw q;Z(1,0)}}function Sd(a,b,c){var d=Y();try{return ge(a,b,c)}catch(f){N(d);if(f!==f+0&&"longjmp"!==f)throw f;Z(1,0)}}z.PThread=L;z.PThread=L;z._pthread_self=Id;z.wasmMemory=m;z.ExitStatus=ya;var ie;function ya(a){this.name="ExitStatus";this.message="Program terminated with exit("+a+")";this.status=a}fb=function je(){ie||ke();ie||(fb=je)};
+function ke(){function a(){if(!ie&&(ie=!0,z.calledRun=!0,!Ha)){z.noFSInit||uc||(uc=!0,tc(),z.stdin=z.stdin,z.stdout=z.stdout,z.stderr=z.stderr,z.stdin?wc("stdin",z.stdin):pc("/dev/tty","/dev/stdin"),z.stdout?wc("stdout",null,z.stdout):pc("/dev/tty","/dev/stdout"),z.stderr?wc("stderr",null,z.stderr):pc("/dev/tty1","/dev/stderr"),qc("/dev/stdin","r"),qc("/dev/stdout","w"),qc("/dev/stderr","w"));Ua(Wa);G||(Yb=!1,Ua(Xa));na(z);if(z.onRuntimeInitialized)z.onRuntimeInitialized();if(!G){if(z.postRun)for("function"==
+typeof z.postRun&&(z.postRun=[z.postRun]);z.postRun.length;){var b=z.postRun.shift();Ya.unshift(b)}Ua(Ya)}}}if(!(0<db)){if(!G){if(z.preRun)for("function"==typeof z.preRun&&(z.preRun=[z.preRun]);z.preRun.length;)Za();Ua(Va)}0<db||(z.setStatus?(z.setStatus("Running..."),setTimeout(function(){setTimeout(function(){z.setStatus("")},1);a()},1)):a())}}z.run=ke;if(z.preInit)for("function"==typeof z.preInit&&(z.preInit=[z.preInit]);0<z.preInit.length;)z.preInit.pop()();G||(noExitRuntime=!0);
+G?(z.___embind_register_native_and_builtin_types(),na(z)):ke();
 
 
   return avif_enc.ready

codecs/avif/enc/avif_enc.worker.js

@@ -0,0 +1 @@
+var threadInfoStruct=0;var selfThreadId=0;var parentThreadId=0;var Module={};function threadPrintErr(){var text=Array.prototype.slice.call(arguments).join(" ");console.error(text)}function threadAlert(){var text=Array.prototype.slice.call(arguments).join(" ");postMessage({cmd:"alert",text:text,threadId:selfThreadId})}var err=threadPrintErr;this.alert=threadAlert;Module["instantiateWasm"]=function(info,receiveInstance){var instance=new WebAssembly.Instance(Module["wasmModule"],info);Module["wasmModule"]=null;receiveInstance(instance);return instance.exports};this.onmessage=function(e){try{if(e.data.cmd==="load"){Module["DYNAMIC_BASE"]=e.data.DYNAMIC_BASE;Module["DYNAMICTOP_PTR"]=e.data.DYNAMICTOP_PTR;Module["wasmModule"]=e.data.wasmModule;Module["wasmMemory"]=e.data.wasmMemory;Module["buffer"]=Module["wasmMemory"].buffer;Module["ENVIRONMENT_IS_PTHREAD"]=true;if(typeof e.data.urlOrBlob==="string"){importScripts(e.data.urlOrBlob)}else{var objectUrl=URL.createObjectURL(e.data.urlOrBlob);importScripts(objectUrl);URL.revokeObjectURL(objectUrl)}avif_enc(Module).then(function(instance){Module=instance;postMessage({"cmd":"loaded"})})}else if(e.data.cmd==="objectTransfer"){Module["PThread"].receiveObjectTransfer(e.data)}else if(e.data.cmd==="run"){Module["__performance_now_clock_drift"]=performance.now()-e.data.time;threadInfoStruct=e.data.threadInfoStruct;Module["registerPthreadPtr"](threadInfoStruct,/*isMainBrowserThread=*/0,/*isMainRuntimeThread=*/0);selfThreadId=e.data.selfThreadId;parentThreadId=e.data.parentThreadId;var max=e.data.stackBase;var top=e.data.stackBase+e.data.stackSize;Module["establishStackSpace"](top,max);Module["_emscripten_tls_init"]();Module["PThread"].receiveObjectTransfer(e.data);Module["PThread"].setThreadStatus(Module["_pthread_self"](),1);/*EM_THREAD_STATUS_RUNNING*/try{var result=Module["dynCall_ii"](e.data.start_routine,e.data.arg);if(!Module["getNoExitRuntime"]())Module["PThread"].threadExit(result)}catch(ex){if(ex==="Canceled!"){Module["PThread"].threadCancel()}else if(ex!="unwind"){Atomics.store(Module["HEAPU32"],(threadInfoStruct+4)>>/*C_STRUCTS.pthread.threadExitCode*/2,(ex instanceof Module["ExitStatus"])?ex.status:-2);/*A custom entry specific to Emscripten denoting that the thread crashed.*/Atomics.store(Module["HEAPU32"],(threadInfoStruct+0)>>/*C_STRUCTS.pthread.threadStatus*/2,1);Module["_emscripten_futex_wake"](threadInfoStruct+0,/*C_STRUCTS.pthread.threadStatus*/2147483647);if(!(ex instanceof Module["ExitStatus"]))throw ex}}}else if(e.data.cmd==="cancel"){if(threadInfoStruct){Module["PThread"].threadCancel()}}else if(e.data.target==="setimmediate"){}else if(e.data.cmd==="processThreadQueue"){if(threadInfoStruct){Module["_emscripten_current_thread_process_queued_calls"]()}}else{err("worker.js received unknown command "+e.data.cmd);err(e.data)}}catch(ex){err("worker.js onmessage() captured an uncaught exception: "+ex);if(ex.stack)err(ex.stack);throw ex}};if(typeof process==="object"&&typeof process.versions==="object"&&typeof process.versions.node==="string"){self={location:{href:__filename}};var onmessage=this.onmessage;var nodeWorkerThreads=require("worker_threads");global.Worker=nodeWorkerThreads.Worker;var parentPort=nodeWorkerThreads.parentPort;parentPort.on("message",function(data){onmessage({data:data})});var nodeFS=require("fs");var nodeRead=function(filename){return nodeFS.readFileSync(filename,"utf8")};function globalEval(x){global.require=require;global.Module=Module;eval.call(null,x)}importScripts=function(f){globalEval(nodeRead(f))};postMessage=function(msg){parentPort.postMessage(msg)};if(typeof performance==="undefined"){performance={now:function(){return Date.now()}}}}

codecs/cpp.Dockerfile

@@ -2,7 +2,7 @@ FROM emscripten/emsdk:1.40.0
 RUN apt-get update && apt-get install -qqy autoconf libtool pkg-config
 ENV CFLAGS "-Os -flto"
 ENV CXXFLAGS "${CFLAGS} -std=c++17"
-ENV LDFLAGS "${CFLAGS}"
+ENV LDFLAGS "${CFLAGS} -s PTHREAD_POOL_SIZE=navigator.hardwareConcurrency"
 # Build and cache standard libraries with these flags
 RUN emcc ${CXXFLAGS} --bind -xc++ /dev/null -o /dev/null
 WORKDIR /src

emscripten-wasm.d.ts

@@ -6,6 +6,7 @@ declare namespace EmscriptenWasm {
   // Options object for modularized Emscripten files. Shoe-horned by @surma.
   // FIXME: This an incomplete definition!
   interface ModuleOpts {
+    mainScriptUrlOrBlob?: string;
     noInitialRun?: boolean;
     locateFile?: (url: string) => string;
     onRuntimeInitialized?: () => void;

package.json

@@ -44,7 +44,7 @@
     "mini-css-extract-plugin": "0.8.0",
     "minimatch": "3.0.4",
     "node-fetch": "2.6.0",
-    "node-sass": "4.13.0",
+    "node-sass": "4.14.1",
     "normalize-path": "^3.0.0",
     "optimize-css-assets-webpack-plugin": "5.0.1",
     "pointer-tracker": "2.0.3",

src/codecs/avif/encoder.ts

@@ -1,12 +1,21 @@
-import avif_enc, { AVIFModule } from '../../../codecs/avif/enc/avif_enc';
+import mainUrl from 'file-loader!../../../codecs/avif/enc/avif_enc.js';
+import avif_enc, { AVIFModule } from '../../../codecs/avif/enc/avif_enc.js';
 import wasmUrl from '../../../codecs/avif/enc/avif_enc.wasm';
+import workerUrl from 'file-loader!../../../codecs/avif/enc/avif_enc.worker.js';
 import { EncodeOptions } from './encoder-meta';
 import { initEmscriptenModule } from '../util';
 
 let emscriptenModule: Promise<AVIFModule>;
 
 export async function encode(data: ImageData, options: EncodeOptions): Promise<ArrayBuffer> {
-  if (!emscriptenModule) emscriptenModule = initEmscriptenModule(avif_enc, wasmUrl);
+  if (!emscriptenModule) {
+    emscriptenModule = initEmscriptenModule(
+      avif_enc,
+      wasmUrl,
+      workerUrl,
+      mainUrl as unknown as string,
+    );
+  }
 
   const module = await emscriptenModule;
   const result = module.encode(data.data, data.width, data.height, options);

src/codecs/util.ts

@@ -5,14 +5,18 @@ type ModuleFactory<M extends EmscriptenWasm.Module> = (
 export function initEmscriptenModule<T extends EmscriptenWasm.Module>(
   moduleFactory: ModuleFactory<T>,
   wasmUrl: string,
+  workerUrl?: string,
+  mainUrl?: string,
 ): Promise<T> {
   return new Promise((resolve) => {
     const module = moduleFactory({
       // Just to be safe, don't automatically invoke any wasm functions
+      mainScriptUrlOrBlob: mainUrl,
       noInitialRun: true,
       locateFile(url: string): string {
         // Redirect the request for the wasm binary to whatever webpack gave us.
         if (url.endsWith('.wasm')) return wasmUrl;
+        if (url.endsWith('.worker.js')) return workerUrl!;
         return url;
       },
       onRuntimeInitialized() {

src/missing-types.d.ts

@@ -33,6 +33,11 @@ declare module 'url-loader!*' {
   export default value;
 }
 
+declare module 'file-loader!*' {
+  const value: string;
+  export default value;
+}
+
 declare var VERSION: string;
 
 declare var ga: {

webpack.config.js

@@ -174,7 +174,7 @@ module.exports = async function(_, env) {
     },
     plugins: [
       new webpack.IgnorePlugin(
-        /(fs|crypto|path)/,
+        /(fs|crypto|path|perf_hooks)/,
         /[/\\]codecs[/\\]/
       ),