Loop through Wasm re-init for issue repro

These days Emscripten returns a Promise to the module directly without hacks.

codecs/avif/Makefile

@@ -1,138 +1,76 @@
 CODEC_URL = https://github.com/AOMediaCodec/libavif/archive/v0.8.1.tar.gz
 CODEC_PACKAGE = node_modules/libavif.tar.gz
 
-CODEC_ENC_DIR = node_modules/libavif-enc
-CODEC_ENC_BUILD_DIR := $(CODEC_ENC_DIR)/build
-CODEC_ENC_OUT := $(CODEC_ENC_BUILD_DIR)/libavif.a
-
-CODEC_DEC_DIR = node_modules/libavif-dec
-CODEC_DEC_BUILD_DIR := $(CODEC_DEC_DIR)/build
-CODEC_DEC_OUT := $(CODEC_DEC_BUILD_DIR)/libavif.a
-
 LIBAOM_URL = https://aomedia.googlesource.com/aom/+archive/v2.0.0.tar.gz
 LIBAOM_PACKAGE = node_modules/libaom.tar.gz
 
-LIBAOM_ENC_DIR := $(CODEC_ENC_DIR)/ext/aom
-LIBAOM_ENC_BUILD_DIR := $(LIBAOM_ENC_DIR)/build.libavif
-LIBAOM_ENC_OUT := $(LIBAOM_ENC_BUILD_DIR)/libaom.a
-
-LIBAOM_DEC_DIR := $(CODEC_DEC_DIR)/ext/aom
-LIBAOM_DEC_BUILD_DIR := $(LIBAOM_DEC_DIR)/build.libavif
-LIBAOM_DEC_OUT := $(LIBAOM_DEC_BUILD_DIR)/libaom.a
+CODEC_ENC_DIR = node_modules/libavif-enc
+CODEC_ENC_MT_DIR = node_modules/libavif-enc-mt
+CODEC_DEC_DIR = node_modules/libavif-dec
+LIBAOM_DIR = node_modules/libaom
 
 OUT_ENC_JS = enc/avif_enc.js
-OUT_ENC_CPP = $(OUT_ENC_JS:.js=.cpp)
-OUT_ENC_WASM = $(OUT_ENC_JS:.js=.wasm)
-
+OUT_ENC_MT_JS = enc/avif_enc_mt.js
 OUT_DEC_JS = dec/avif_dec.js
-OUT_DEC_CPP = $(OUT_DEC_JS:.js=.cpp)
-OUT_DEC_WASM = $(OUT_DEC_JS:.js=.wasm)
 
-# ERROR_ON_UNDEFINED_SYMBOLS=0 is needed to seperate the encoder and decoder
-EMSCRIPTEN_FLAGS = ${CXXFLAGS} \
-	${LDFLAGS} \
-	--bind \
-	--closure 1 \
-	-s ALLOW_MEMORY_GROWTH=1 \
-	-s MODULARIZE=1 \
-	-s ERROR_ON_UNDEFINED_SYMBOLS=0
+OUT_ENC_CPP = enc/avif_enc.cpp
+OUT_DEC_CPP = dec/avif_dec.cpp
 
-CODEC_EMCMAKE = emcmake cmake \
-	-DCMAKE_BUILD_TYPE=Release \
-	-DBUILD_SHARED_LIBS=0 \
-	-DAVIF_CODEC_AOM=1 \
-	-DAVIF_LOCAL_AOM=1 \
-	../
-
-LIBAOM_FLAGS = -DCMAKE_BUILD_TYPE=Release \
-	-DENABLE_CCACHE=0 \
-	-DAOM_TARGET_CPU=generic \
-	-DENABLE_DOCS=0 \
-	-DENABLE_TESTS=0 \
-	-DENABLE_EXAMPLES=0 \
-	-DENABLE_TOOLS=0 \
-	-DCONFIG_ACCOUNTING=1 \
-	-DCONFIG_INSPECTION=0 \
-	-DCONFIG_MULTITHREAD=0 \
-	-DCONFIG_RUNTIME_CPU_DETECT=0 \
-	-DCONFIG_WEBM_IO=0
+HELPER_MAKEFLAGS := -f helper.Makefile \
+	LIBAOM_DIR=$(LIBAOM_DIR) \
+	CODEC_PACKAGE=$(CODEC_PACKAGE) \
+	LIBAOM_PACKAGE=$(LIBAOM_PACKAGE)
 
 .PHONY: all clean
 
-all: $(OUT_ENC_JS) $(OUT_DEC_JS)
+all: $(OUT_ENC_JS) $(OUT_DEC_JS) $(OUT_ENC_MT_JS)
 
-$(OUT_ENC_JS): $(OUT_ENC_CPP) $(LIBAOM_ENC_OUT) $(CODEC_ENC_OUT)
-	$(CXX) \
-		-I $(CODEC_ENC_DIR)/include \
-		${EMSCRIPTEN_FLAGS} \
-		-s 'EXPORT_NAME="$(basename $(@F))"' \
-		-o $@ \
-		$+
+$(OUT_ENC_JS): $(OUT_ENC_CPP) $(CODEC_PACKAGE) $(LIBAOM_DIR)/CMakeLists.txt
+	$(MAKE) \
+		$(HELPER_MAKEFLAGS) \
+		CODEC_DIR=$(CODEC_ENC_DIR) \
+		OUT_JS=$@ \
+		OUT_CPP=$< \
+		LIBAOM_FLAGS="\
+			-DCONFIG_AV1_DECODER=0 \
+			-DCONFIG_MULTITHREAD=0 \
+		"
 
-$(OUT_DEC_JS): $(OUT_DEC_CPP) $(LIBAOM_DEC_OUT) $(CODEC_DEC_OUT)
-	$(CXX) \
-		-I $(CODEC_DEC_DIR)/include \
-		${EMSCRIPTEN_FLAGS} \
-		-s 'EXPORT_NAME="$(basename $(@F))"' \
-		-o $@ \
-		$+
+$(OUT_ENC_MT_JS): $(OUT_ENC_CPP) $(CODEC_PACKAGE) $(LIBAOM_DIR)/CMakeLists.txt
+	$(MAKE) \
+		$(HELPER_MAKEFLAGS) \
+		CODEC_DIR=$(CODEC_ENC_MT_DIR) \
+		OUT_JS=$@ \
+		OUT_CPP=$< \
+		LIBAOM_FLAGS="\
+			-DCONFIG_AV1_DECODER=0 \
+		" \
+		OUT_FLAGS="-pthread"
 
-$(CODEC_ENC_OUT): $(CODEC_ENC_DIR)/CMakeLists.txt $(LIBAOM_ENC_OUT)
-	mkdir -p $(CODEC_ENC_BUILD_DIR)
-	cd $(CODEC_ENC_BUILD_DIR) && \
-	$(CODEC_EMCMAKE) && \
-	$(MAKE)
-
-$(CODEC_DEC_OUT): $(CODEC_DEC_DIR)/CMakeLists.txt $(LIBAOM_DEC_OUT)
-	mkdir -p $(CODEC_DEC_BUILD_DIR)
-	cd $(CODEC_DEC_BUILD_DIR) && \
-	$(CODEC_EMCMAKE) && \
-	$(MAKE)
-
-$(LIBAOM_ENC_OUT): $(LIBAOM_ENC_DIR)/CMakeLists.txt
-	mkdir -p $(LIBAOM_ENC_BUILD_DIR)
-	cd $(LIBAOM_ENC_BUILD_DIR) && \
-	emcmake cmake \
-		$(LIBAOM_FLAGS) \
-		-DCONFIG_AV1_DECODER=0 \
-		-DCONFIG_AV1_HIGHBITDEPTH=0 \
-		../ && \
-	$(MAKE)
-
-$(LIBAOM_DEC_OUT): $(LIBAOM_DEC_DIR)/CMakeLists.txt
-	mkdir -p $(LIBAOM_DEC_BUILD_DIR)
-	cd $(LIBAOM_DEC_BUILD_DIR) && \
-	emcmake cmake \
-		$(LIBAOM_FLAGS) \
-		-DCONFIG_AV1_ENCODER=0 \
-		../ && \
-	$(MAKE)
-
-$(CODEC_ENC_DIR)/CMakeLists.txt: $(CODEC_ENC_DIR)
-$(CODEC_DEC_DIR)/CMakeLists.txt: $(CODEC_DEC_DIR)
-
-$(LIBAOM_ENC_DIR)/CMakeLists.txt: $(LIBAOM_ENC_DIR)
-$(LIBAOM_DEC_DIR)/CMakeLists.txt: $(LIBAOM_DEC_DIR)
+$(OUT_DEC_JS): $(OUT_DEC_CPP) $(CODEC_PACKAGE) $(LIBAOM_DIR)/CMakeLists.txt
+	$(MAKE) \
+		$(HELPER_MAKEFLAGS) \
+		CODEC_DIR=$(CODEC_DEC_DIR) \
+		OUT_JS=$@ \
+		OUT_CPP=$< \
+		LIBAOM_FLAGS="\
+			-DCONFIG_AV1_ENCODER=0 \
+			-DCONFIG_MULTITHREAD=0 \
+		"
 
 $(CODEC_PACKAGE):
-	mkdir -p $(dir $@)
+	mkdir -p $(@D)
 	curl -sL $(CODEC_URL) -o $@
 
 $(LIBAOM_PACKAGE):
-	mkdir -p $(dir $@)
+	mkdir -p $(@D)
 	curl -sL $(LIBAOM_URL) -o $@
 
-$(CODEC_ENC_DIR) $(CODEC_DEC_DIR): $(CODEC_PACKAGE)
-	mkdir -p $@
-	tar xz --strip 1 -C $@ -f $(CODEC_PACKAGE)
-
-$(LIBAOM_ENC_DIR) $(LIBAOM_DEC_DIR): $(LIBAOM_PACKAGE)
-	mkdir -p $@
-	tar xz -C $@ -f $(LIBAOM_PACKAGE)
+$(LIBAOM_DIR)/CMakeLists.txt: $(LIBAOM_PACKAGE)
+	mkdir -p $(@D)
+	tar xzm -C $(@D) -f $(LIBAOM_PACKAGE)
 
 clean:
-	$(RM) $(LIBAOM_PACKAGE) $(CODEC_PACKAGE) $(OUT_ENC_JS) $(OUT_ENC_WASM) $(OUT_DEC_JS) $(OUT_DEC_WASM)
-	$(MAKE) -C $(CODEC_ENC_BUILD_DIR) clean
-	$(MAKE) -C $(CODEC_DEC_BUILD_DIR) clean
-	$(MAKE) -C $(LIBAOM_ENC_BUILD_DIR) clean
-	$(MAKE) -C $(LIBAOM_DEC_BUILD_DIR) clean
+	$(MAKE) $(HELPER_MAKEFLAGS) CODEC_DIR=$(CODEC_ENC_DIR) OUT_JS=$(OUT_ENC_JS) clean
+	$(MAKE) $(HELPER_MAKEFLAGS) CODEC_DIR=$(CODEC_ENC_MT_DIR) OUT_JS=$(OUT_ENC_MT_JS) clean
+	$(MAKE) $(HELPER_MAKEFLAGS) CODEC_DIR=$(CODEC_DEC_DIR) OUT_JS=$(OUT_DEC_JS) clean

codecs/avif/dec/avif_dec.d.ts

@@ -2,5 +2,5 @@ interface AVIFModule extends EmscriptenWasm.Module {
   decode(data: BufferSource): ImageData | null;
 }
 
-export default function(opts: EmscriptenWasm.ModuleOpts): AVIFModule;
+export default function(opts: EmscriptenWasm.ModuleOpts): Promise<AVIFModule>;
 

codecs/avif/dec/avif_dec.js

@@ -11,38 +11,38 @@ var d;d||(d=typeof avif_dec !== 'undefined' ? avif_dec : {});var aa,ba;d.ready=n
 if(ca)w=v?require("path").dirname(w)+"/":__dirname+"/",x=function(a,b){ea||(ea=require("fs"));fa||(fa=require("path"));a=fa.normalize(a);return ea.readFileSync(a,b?null:"utf8")},z=function(a){a=x(a,!0);a.buffer||(a=new Uint8Array(a));a.buffer||A("Assertion failed: undefined");return a},1<process.argv.length&&process.argv[1].replace(/\\/g,"/"),process.argv.slice(2),process.on("uncaughtException",function(a){throw a;}),process.on("unhandledRejection",A),d.inspect=function(){return"[Emscripten Module object]"};
 else if(da)"undefined"!=typeof read&&(x=function(a){return read(a)}),z=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");"object"===typeof a||A("Assertion failed: undefined");return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(u||v)v?w=self.location.href:document.currentScript&&(w=document.currentScript.src),_scriptDir&&
 (w=_scriptDir),0!==w.indexOf("blob:")?w=w.substr(0,w.lastIndexOf("/")+1):w="",x=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.send(null);return b.responseText},v&&(z=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.responseType="arraybuffer";b.send(null);return new Uint8Array(b.response)});var ha=d.print||console.log.bind(console),B=d.printErr||console.warn.bind(console);for(t in r)r.hasOwnProperty(t)&&(d[t]=r[t]);r=null;var ia=0,D;d.wasmBinary&&(D=d.wasmBinary);var noExitRuntime;
-d.noExitRuntime&&(noExitRuntime=d.noExitRuntime);"object"!==typeof WebAssembly&&A("no native wasm support detected");var E,ja=new WebAssembly.Table({initial:675,maximum:675,element:"anyfunc"}),ka=!1,la="undefined"!==typeof TextDecoder?new TextDecoder("utf8"):void 0;
+d.noExitRuntime&&(noExitRuntime=d.noExitRuntime);"object"!==typeof WebAssembly&&A("no native wasm support detected");var E,ja=new WebAssembly.Table({initial:419,maximum:419,element:"anyfunc"}),ka=!1,la="undefined"!==typeof TextDecoder?new TextDecoder("utf8"):void 0;
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+function Bb(a,b,c){var e=Y();try{Gb(a,b,c)}catch(f){Z(e);if(f!==f+0&&"longjmp"!==f)throw f;X(1,0)}}function Cb(a,b,c,e,f){var g=Y();try{Hb(a,b,c,e,f)}catch(h){Z(g);if(h!==h+0&&"longjmp"!==h)throw h;X(1,0)}}function xb(a,b,c){var e=Y();try{return Ib(a,b,c)}catch(f){Z(e);if(f!==f+0&&"longjmp"!==f)throw f;X(1,0)}}function Ab(a,b){var c=Y();try{Fb(a,b)}catch(e){Z(c);if(e!==e+0&&"longjmp"!==e)throw e;X(1,0)}}function zb(a){var b=Y();try{Eb(a)}catch(c){Z(b);if(c!==c+0&&"longjmp"!==c)throw c;X(1,0)}}
+function yb(a,b,c,e,f){var g=Y();try{return Jb(a,b,c,e,f)}catch(h){Z(g);if(h!==h+0&&"longjmp"!==h)throw h;X(1,0)}}var Kb;N=function Lb(){Kb||Mb();Kb||(N=Lb)};
 function Mb(){function a(){if(!Kb&&(Kb=!0,d.calledRun=!0,!ka)){Aa(Ca);Aa(Da);aa(d);if(d.onRuntimeInitialized)d.onRuntimeInitialized();if(d.postRun)for("function"==typeof d.postRun&&(d.postRun=[d.postRun]);d.postRun.length;){var b=d.postRun.shift();Ea.unshift(b)}Aa(Ea)}}if(!(0<L)){if(d.preRun)for("function"==typeof d.preRun&&(d.preRun=[d.preRun]);d.preRun.length;)Fa();Aa(Ba);0<L||(d.setStatus?(d.setStatus("Running..."),setTimeout(function(){setTimeout(function(){d.setStatus("")},1);a()},1)):a())}}
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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.d.ts

@@ -4,4 +4,4 @@ interface AVIFModule extends EmscriptenWasm.Module {
   encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array | null;
 }
 
-export default function(opts: EmscriptenWasm.ModuleOpts): AVIFModule;
+export default function(opts: EmscriptenWasm.ModuleOpts): Promise<AVIFModule>;

codecs/avif/enc/avif_enc.js

@@ -17,7 +17,7 @@ function sa(a,b,c,d){if(!(0<d))return 0;var e=c;d=c+d-1;for(var g=0;g<a.length;+
 function ta(a){for(var b=0,c=0;c<a.length;++c){var d=a.charCodeAt(c);55296<=d&&57343>=d&&(d=65536+((d&1023)<<10)|a.charCodeAt(++c)&1023);127>=d?++b:b=2047>=d?b+2:65535>=d?b+3:b+4}return b}var ua="undefined"!==typeof TextDecoder?new TextDecoder("utf-16le"):void 0;function va(a,b){var c=a>>1;for(var d=c+b/2;!(c>=d)&&wa[c];)++c;c<<=1;if(32<c-a&&ua)return ua.decode(C.subarray(a,c));c=0;for(d="";;){var e=E[a+2*c>>1];if(0==e||c==b/2)return d;++c;d+=String.fromCharCode(e)}}
 function xa(a,b,c){void 0===c&&(c=2147483647);if(2>c)return 0;c-=2;var d=b;c=c<2*a.length?c/2:a.length;for(var e=0;e<c;++e)E[b>>1]=a.charCodeAt(e),b+=2;E[b>>1]=0;return b-d}function ya(a){return 2*a.length}function za(a,b){for(var c=0,d="";!(c>=b/4);){var e=F[a+4*c>>2];if(0==e)break;++c;65536<=e?(e-=65536,d+=String.fromCharCode(55296|e>>10,56320|e&1023)):d+=String.fromCharCode(e)}return d}
 function Aa(a,b,c){void 0===c&&(c=2147483647);if(4>c)return 0;var d=b;c=d+c-4;for(var e=0;e<a.length;++e){var g=a.charCodeAt(e);if(55296<=g&&57343>=g){var h=a.charCodeAt(++e);g=65536+((g&1023)<<10)|h&1023}F[b>>2]=g;b+=4;if(b+4>c)break}F[b>>2]=0;return b-d}function Ba(a){for(var b=0,c=0;c<a.length;++c){var d=a.charCodeAt(c);55296<=d&&57343>=d&&++c;b+=4}return b}var G,H,C,E,wa,F,I,Ca,Da;
-function Ea(a){G=a;f.HEAP8=H=new Int8Array(a);f.HEAP16=E=new Int16Array(a);f.HEAP32=F=new Int32Array(a);f.HEAPU8=C=new Uint8Array(a);f.HEAPU16=wa=new Uint16Array(a);f.HEAPU32=I=new Uint32Array(a);f.HEAPF32=Ca=new Float32Array(a);f.HEAPF64=Da=new Float64Array(a)}var Fa=f.INITIAL_MEMORY||16777216;f.wasmMemory?A=f.wasmMemory:A=new WebAssembly.Memory({initial:Fa/65536,maximum:32768});A&&(G=A.buffer);Fa=G.byteLength;Ea(G);F[219592]=6121408;
+function Ea(a){G=a;f.HEAP8=H=new Int8Array(a);f.HEAP16=E=new Int16Array(a);f.HEAP32=F=new Int32Array(a);f.HEAPU8=C=new Uint8Array(a);f.HEAPU16=wa=new Uint16Array(a);f.HEAPU32=I=new Uint32Array(a);f.HEAPF32=Ca=new Float32Array(a);f.HEAPF64=Da=new Float64Array(a)}var Fa=f.INITIAL_MEMORY||16777216;f.wasmMemory?A=f.wasmMemory:A=new WebAssembly.Memory({initial:Fa/65536,maximum:32768});A&&(G=A.buffer);Fa=G.byteLength;Ea(G);F[219588]=6121392;
 function Ga(a){for(;0<a.length;){var b=a.shift();if("function"==typeof b)b(f);else{var c=b.qb;"number"===typeof c?void 0===b.Ya?f.dynCall_v(c):f.dynCall_vi(c,b.Ya):c(void 0===b.Ya?null:b.Ya)}}}var Ha=[],Ia=[],Ja=[],Ka=[];function La(){var a=f.preRun.shift();Ha.unshift(a)}var Ma=Math.abs,Na=Math.ceil,Oa=Math.floor,Pa=Math.min,J=0,Qa=null,Ra=null;f.preloadedImages={};f.preloadedAudios={};
 function x(a){if(f.onAbort)f.onAbort(a);z(a);pa=!0;a=new WebAssembly.RuntimeError("abort("+a+"). Build with -s ASSERTIONS=1 for more info.");ba(a);throw a;}function Sa(a){var b=K;return String.prototype.startsWith?b.startsWith(a):0===b.indexOf(a)}function Ta(){return Sa("data:application/octet-stream;base64,")}var K="avif_enc.wasm";if(!Ta()){var Ua=K;K=f.locateFile?f.locateFile(Ua,u):u+Ua}
 function Va(){try{if(na)return new Uint8Array(na);if(ia)return ia(K);throw"both async and sync fetching of the wasm failed";}catch(a){x(a)}}function Wa(){return na||!da&&!r||"function"!==typeof fetch||Sa("file://")?new Promise(function(a){a(Va())}):fetch(K,{credentials:"same-origin"}).then(function(a){if(!a.ok)throw"failed to load wasm binary file at '"+K+"'";return a.arrayBuffer()}).catch(function(){return Va()})}var Xa,Ya;Ia.push({qb:function(){Za()}});function $a(){return 0<$a.Va}
@@ -62,7 +62,7 @@ Object.defineProperties(Bb.prototype,{read:{get:function(){return 365===(this.mo
 (function(){O("/dev");hb(259,{read:function(){return 0},write:function(d,e,g,h){return h}});Kb("/dev/null",259);gb(1280,jb);gb(1536,kb);Kb("/dev/tty",1280);Kb("/dev/tty1",1536);if("object"===typeof crypto&&"function"===typeof crypto.getRandomValues){var a=new Uint8Array(1);var b=function(){crypto.getRandomValues(a);return a[0]}}else if(ea)try{var c=require("crypto");b=function(){return c.randomBytes(1)[0]}}catch(d){}b||(b=function(){x("random_device")});Sb("random",b);Sb("urandom",b);O("/dev/shm");
 O("/dev/shm/tmp")})();O("/proc");O("/proc/self");O("/proc/self/fd");Ib({Qa:function(){var a=mb("/proc/self","fd",16895,73);a.Ja={lookup:function(b,c){var d=sb[+c];if(!d)throw new L(8);b={parent:null,Qa:{lb:"fake"},Ja:{readlink:function(){return d.path}}};return b.parent=b}};return a}},"/proc/self/fd");ec=f.InternalError=dc("InternalError");for(var Dc=Array(256),Ec=0;256>Ec;++Ec)Dc[Ec]=String.fromCharCode(Ec);ic=Dc;jc=f.BindingError=dc("BindingError");
 f.count_emval_handles=function(){for(var a=0,b=5;b<V.length;++b)void 0!==V[b]&&++a;return a};f.get_first_emval=function(){for(var a=5;a<V.length;++a)if(void 0!==V[a])return V[a];return null};uc=f.UnboundTypeError=dc("UnboundTypeError");
-var Qc={w:function(a){return pb(a)},T:function(){},R:function(a){"uncaught_exception"in $a?$a.Va++:$a.Va=1;throw a;},p:function(a,b,c){Ub=c;try{var d=Wb(a);switch(b){case 0:var e=Vb();return 0>e?-28:Mb(d.path,d.flags,0,e).fd;case 1:case 2:return 0;case 3:return d.flags;case 4:return e=Vb(),d.flags|=e,0;case 12:return e=Vb(),E[e+0>>1]=2,0;case 13:case 14:return 0;case 16:case 8:return-28;case 9:return F[Fc()>>2]=28,-1;default:return-28}}catch(g){return"undefined"!==typeof Q&&g instanceof L||x(g),-g.Sa}},
+var Qc={w:function(a){return pb(a)},T:function(){},R:function(a){"uncaught_exception"in $a?$a.Va++:$a.Va=1;throw a;},q:function(a,b,c){Ub=c;try{var d=Wb(a);switch(b){case 0:var e=Vb();return 0>e?-28:Mb(d.path,d.flags,0,e).fd;case 1:case 2:return 0;case 3:return d.flags;case 4:return e=Vb(),d.flags|=e,0;case 12:return e=Vb(),E[e+0>>1]=2,0;case 13:case 14:return 0;case 16:case 8:return-28;case 9:return F[Fc()>>2]=28,-1;default:return-28}}catch(g){return"undefined"!==typeof Q&&g instanceof L||x(g),-g.Sa}},
 K:function(a,b,c){Ub=c;try{var d=Wb(a);switch(b){case 21509:case 21505:return d.tty?0:-59;case 21510:case 21511:case 21512:case 21506:case 21507:case 21508:return d.tty?0:-59;case 21519:if(!d.tty)return-59;var e=Vb();return F[e>>2]=0;case 21520:return d.tty?-28:-59;case 21531:a=e=Vb();if(!d.Ka.vb)throw new L(59);return d.Ka.vb(d,b,a);case 21523:return d.tty?0:-59;case 21524:return d.tty?0:-59;default:x("bad ioctl syscall "+b)}}catch(g){return"undefined"!==typeof Q&&g instanceof L||x(g),-g.Sa}},L:function(a,
 b,c){Ub=c;try{var d=a?B(C,a,void 0):"",e=Vb();return Mb(d,b,e).fd}catch(g){return"undefined"!==typeof Q&&g instanceof L||x(g),-g.Sa}},A:function(a){var b=Xb[a];delete Xb[a];var c=b.yb,d=b.zb,e=b.gb,g=e.map(function(h){return h.tb}).concat(e.map(function(h){return h.Db}));fc([a],g,function(h){var k={};e.forEach(function(l,n){var p=h[n],t=l.rb,v=l.sb,w=h[n+e.length],q=l.Cb,D=l.Eb;k[l.pb]={read:function(y){return p.fromWireType(t(v,y))},write:function(y,P){var ra=[];q(D,y,w.toWireType(ra,P));Yb(ra)}}});
 return[{name:b.name,fromWireType:function(l){var n={},p;for(p in k)n[p]=k[p].read(l);d(l);return n},toWireType:function(l,n){for(var p in k)if(!(p in n))throw new TypeError('Missing field:  "'+p+'"');var t=c();for(p in k)k[p].write(t,n[p]);null!==l&&l.push(d,t);return t},argPackAdvance:8,readValueFromPointer:Zb,Pa:d}]})},N:function(a,b,c,d,e){var g=hc(c);b=T(b);S(a,{name:b,fromWireType:function(h){return!!h},toWireType:function(h,k){return k?d:e},argPackAdvance:8,readValueFromPointer:function(h){if(1===
@@ -80,7 +80,7 @@ a);a=V[a].value;var e=Cc[b];if(!e){e="";for(var g=0;g<b;++g)e+=(0!==g?", ":"")+"
 f,mc);Cc[b]=e}return e(a,c,d)},v:function(){x()},P:function(){z("missing function: aom_codec_av1_dx");x(-1)},d:function(a,b){X(a,b||1);throw"longjmp";},I:function(a,b,c){C.copyWithin(a,b,b+c)},j:function(a){a>>>=0;var b=C.length;if(2147483648<a)return!1;for(var c=1;4>=c;c*=2){var d=b*(1+.2/c);d=Math.min(d,a+100663296);d=Math.max(16777216,a,d);0<d%65536&&(d+=65536-d%65536);a:{try{A.grow(Math.min(2147483648,d)-G.byteLength+65535>>>16);Ea(A.buffer);var e=1;break a}catch(g){}e=void 0}if(e)return!0}return!1},
 r:function(a){try{var b=Wb(a);if(null===b.fd)throw new L(8);b.Za&&(b.Za=null);try{b.Ka.close&&b.Ka.close(b)}catch(c){throw c;}finally{sb[b.fd]=null}b.fd=null;return 0}catch(c){return"undefined"!==typeof Q&&c instanceof L||x(c),c.Sa}},J:function(a,b,c,d){try{a:{for(var e=Wb(a),g=a=0;g<c;g++){var h=F[b+(8*g+4)>>2],k=e,l=F[b+8*g>>2],n=h,p=void 0,t=H;if(0>n||0>p)throw new L(28);if(null===k.fd)throw new L(8);if(1===(k.flags&2097155))throw new L(8);if(16384===(k.node.mode&61440))throw new L(31);if(!k.Ka.read)throw new L(28);
 var v="undefined"!==typeof p;if(!v)p=k.position;else if(!k.seekable)throw new L(70);var w=k.Ka.read(k,t,l,n,p);v||(k.position+=w);var q=w;if(0>q){var D=-1;break a}a+=q;if(q<h)break}D=a}F[d>>2]=D;return 0}catch(y){return"undefined"!==typeof Q&&y instanceof L||x(y),y.Sa}},E:function(a,b,c,d,e){try{var g=Wb(a);a=4294967296*c+(b>>>0);if(-9007199254740992>=a||9007199254740992<=a)return-61;Ob(g,a,d);Ya=[g.position>>>0,(Xa=g.position,1<=+Ma(Xa)?0<Xa?(Pa(+Oa(Xa/4294967296),4294967295)|0)>>>0:~~+Na((Xa-+(~~Xa>>>
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codecs/avif/enc/avif_enc_mt.js

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+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"==
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+G?(z.___embind_register_native_and_builtin_types(),na(z)):ke();
+
+
+  return avif_enc_mt.ready
+}
+);
+})();
+if (typeof exports === 'object' && typeof module === 'object')
+      module.exports = avif_enc_mt;
+    else if (typeof define === 'function' && define['amd'])
+      define([], function() { return avif_enc_mt; });
+    else if (typeof exports === 'object')
+      exports["avif_enc_mt"] = avif_enc_mt;
+    

codecs/avif/enc/avif_enc_mt.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_mt(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/avif/helper.Makefile

@@ -0,0 +1,78 @@
+# This is a helper Makefile for building LibAVIF + LibAOM with given params.
+#
+# Params that must be supplied by the caller:
+#   $(CODEC_DIR)
+#   $(LIBAOM_DIR)
+#   $(OUT_JS)
+#   $(OUT_CPP)
+#   $(LIBAOM_FLAGS)
+#   $(CODEC_PACKAGE)
+#   $(LIBAOM_PACKAGE)
+
+CODEC_BUILD_DIR := $(CODEC_DIR)/build
+CODEC_OUT := $(CODEC_BUILD_DIR)/libavif.a
+
+LIBAOM_BUILD_DIR := $(CODEC_DIR)/ext/aom/build.libavif
+LIBAOM_OUT := $(LIBAOM_BUILD_DIR)/libaom.a
+
+OUT_WASM = $(OUT_JS:.js=.wasm)
+OUT_WORKER=$(OUT_JS:.js=.worker.js)
+
+.PHONY: all clean
+
+all: $(OUT_JS)
+
+$(OUT_JS): $(OUT_CPP) $(LIBAOM_OUT) $(CODEC_OUT)
+	# ERROR_ON_UNDEFINED_SYMBOLS=0 is needed to separate the encoder and decoder
+	$(CXX) \
+		-I $(CODEC_DIR)/include \
+		$(CXXFLAGS) \
+		$(LDFLAGS) \
+		$(OUT_FLAGS) \
+		--bind \
+		--closure 1 \
+		-s ALLOW_MEMORY_GROWTH=1 \
+		-s MODULARIZE=1 \
+		-s ERROR_ON_UNDEFINED_SYMBOLS=0 \
+		-s 'EXPORT_NAME="$(basename $(@F))"' \
+		-o $@ \
+		$+
+
+$(CODEC_OUT): $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_OUT)
+	emcmake cmake \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DBUILD_SHARED_LIBS=0 \
+		-DAVIF_CODEC_AOM=1 \
+		-DAVIF_LOCAL_AOM=1 \
+		-DAVIF_CODEC_INCLUDES=$(abspath $(LIBAOM_DIR)) \
+		-B $(CODEC_BUILD_DIR) \
+		$(CODEC_DIR) && \
+	$(MAKE) -C $(CODEC_BUILD_DIR)
+
+$(LIBAOM_OUT): $(LIBAOM_DIR)/CMakeLists.txt
+	emcmake cmake \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DENABLE_CCACHE=0 \
+		-DAOM_TARGET_CPU=generic \
+		-DENABLE_DOCS=0 \
+		-DENABLE_TESTS=0 \
+		-DENABLE_EXAMPLES=0 \
+		-DENABLE_TOOLS=0 \
+		-DCONFIG_ACCOUNTING=1 \
+		-DCONFIG_INSPECTION=0 \
+		-DCONFIG_RUNTIME_CPU_DETECT=0 \
+		-DCONFIG_WEBM_IO=0 \
+		-DCONFIG_AV1_HIGHBITDEPTH=0 \
+		$(LIBAOM_FLAGS) \
+		-B $(LIBAOM_BUILD_DIR) \
+		$(LIBAOM_DIR) && \
+	$(MAKE) -C $(LIBAOM_BUILD_DIR)
+
+$(CODEC_DIR)/CMakeLists.txt: $(CODEC_PACKAGE)
+	mkdir -p $(@D)
+	tar xzm --strip 1 -C $(@D) -f $(CODEC_PACKAGE)
+
+clean:
+	$(RM) $(OUT_JS) $(OUT_WASM) $(OUT_WORKER)
+	$(MAKE) -C $(CODEC_BUILD_DIR) clean
+	$(MAKE) -C $(LIBAOM_BUILD_DIR) clean

codecs/build-rust-nightly.sh

@@ -0,0 +1,4 @@
+set -e
+
+docker build -t squoosh-rust-nightly --build-arg RUST_IMG=rustlang/rust:nightly - < ../rust.Dockerfile
+docker run --rm -v $PWD:/src squoosh-rust-nightly "$@"

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

codecs/hqx/build.sh

@@ -1,21 +0,0 @@
-#!/bin/bash
-
-set -e
-
-echo "============================================="
-echo "Compiling wasm"
-echo "============================================="
-(
-  wasm-pack build -- --verbose --locked
-  rm pkg/.gitignore
-)
-echo "============================================="
-echo "Compiling wasm  done"
-echo "============================================="
-
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
-echo "Did you update your docker image?"
-echo "Run \`docker pull ubuntu\`"
-echo "Run \`docker pull rust\`"
-echo "Run \`docker build -t squoosh-hqx .\`"
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/imagequant/imagequant.d.ts

@@ -3,4 +3,4 @@ interface QuantizerModule extends EmscriptenWasm.Module {
   zx_quantize(data: BufferSource, width: number, height: number, dither: number): Uint8ClampedArray;
 }
 
-export default function(opts: EmscriptenWasm.ModuleOpts): QuantizerModule;
+export default function(opts: EmscriptenWasm.ModuleOpts): Promise<QuantizerModule>;

codecs/mozjpeg_enc/mozjpeg_enc.d.ts

@@ -4,4 +4,4 @@ interface MozJPEGModule extends EmscriptenWasm.Module {
   encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array;
 }
 
-export default function(opts: EmscriptenWasm.ModuleOpts): MozJPEGModule;
+export default function(opts: EmscriptenWasm.ModuleOpts): Promise<MozJPEGModule>;

codecs/oxipng/Cargo.lock

@@ -1,16 +1,22 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
 [[package]]
-name = "adler32"
-version = "1.1.0"
+name = "adler"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "567b077b825e468cc974f0020d4082ee6e03132512f207ef1a02fd5d00d1f32d"
+checksum = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
+
+[[package]]
+name = "adler32"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
 
 [[package]]
 name = "autocfg"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
+checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
 [[package]]
 name = "bit-vec"
@@ -38,9 +44,9 @@ checksum = "2e8c087f005730276d1096a652e92a8bacee2e2472bcc9715a74d2bec38b5820"
 
 [[package]]
 name = "bytemuck"
-version = "1.2.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37fa13df2292ecb479ec23aa06f4507928bef07839be9ef15281411076629431"
+checksum = "41aa2ec95ca3b5c54cf73c91acf06d24f4495d5f1b1c12506ae3483d646177ac"
 
 [[package]]
 name = "byteorder"
@@ -50,9 +56,9 @@ checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 
 [[package]]
 name = "cc"
-version = "1.0.58"
+version = "1.0.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9a06fb2e53271d7c279ec1efea6ab691c35a2ae67ec0d91d7acec0caf13b518"
+checksum = "ef611cc68ff783f18535d77ddd080185275713d852c4f5cbb6122c462a7a825c"
 
 [[package]]
 name = "cfg-if"
@@ -96,6 +102,16 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b153fe7cbef478c567df0f972e02e6d736db11affe43dfc9c56a9374d1adfb87"
+dependencies = [
+ "crossbeam-utils",
+ "maybe-uninit",
+]
+
 [[package]]
 name = "crossbeam-deque"
 version = "0.7.3"
@@ -122,17 +138,6 @@ dependencies = [
  "scopeguard",
 ]
 
-[[package]]
-name = "crossbeam-queue"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "774ba60a54c213d409d5353bda12d49cd68d14e45036a285234c8d6f91f92570"
-dependencies = [
- "cfg-if",
- "crossbeam-utils",
- "maybe-uninit",
-]
-
 [[package]]
 name = "crossbeam-utils"
 version = "0.7.2"
@@ -156,24 +161,30 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.5.3"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb1f6b1ce1c140482ea30ddd3335fc0024ac7ee112895426e0a629a6c20adfe3"
+checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
+
+[[package]]
+name = "hashbrown"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00d63df3d41950fb462ed38308eea019113ad1508da725bbedcd0fa5a85ef5f7"
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.15"
+version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3deed196b6e7f9e44a2ae8d94225d80302d81208b1bb673fd21fe634645c85a9"
+checksum = "4c30f6d0bc6b00693347368a67d41b58f2fb851215ff1da49e90fe2c5c667151"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "image"
-version = "0.23.7"
+version = "0.23.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2397fc43bd5648b7117aabb3c5e62d0e62c194826ec77b0b4d0c41e62744635"
+checksum = "974e194911d1f7efe3cd8a8f9db3b767e43536327e899e8bc9a12ef5711b74d2"
 dependencies = [
  "bytemuck",
  "byteorder",
@@ -185,11 +196,12 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.4.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c398b2b113b55809ceb9ee3e753fcbac793f1956663f3c36549c1346015c2afe"
+checksum = "55e2e4c765aa53a0424761bf9f41aa7a6ac1efa87238f59560640e27fca028f2"
 dependencies = [
  "autocfg",
+ "hashbrown",
  "rayon",
 ]
 
@@ -210,24 +222,33 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.72"
+version = "0.2.77"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9f8082297d534141b30c8d39e9b1773713ab50fdbe4ff30f750d063b3bfd701"
+checksum = "f2f96b10ec2560088a8e76961b00d47107b3a625fecb76dedb29ee7ccbf98235"
 
 [[package]]
-name = "libdeflater"
-version = "0.2.0"
+name = "libdeflate-sys"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66dca08b13369865b2f6dca1dd05f833985cbe6c12a676b04d55f78b85e80246"
+checksum = "21e39efa87b84db3e13ff4e2dfac1e57220abcbd7fe8ec44d238f7f4f787cc1f"
 dependencies = [
  "cc",
 ]
 
 [[package]]
-name = "log"
-version = "0.4.8"
+name = "libdeflater"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
+checksum = "a4810980d791f26d470e2d7d91a3d4d22aa3a4b709fb7e9c5e43ee54f83a01f2"
+dependencies = [
+ "libdeflate-sys",
+]
+
+[[package]]
+name = "log"
+version = "0.4.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fabed175da42fed1fa0746b0ea71f412aa9d35e76e95e59b192c64b9dc2bf8b"
 dependencies = [
  "cfg-if",
 ]
@@ -240,9 +261,9 @@ checksum = "60302e4db3a61da70c0cb7991976248362f30319e88850c487b9b95bbf059e00"
 
 [[package]]
 name = "memoffset"
-version = "0.5.5"
+version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c198b026e1bbf08a937e94c6c60f9ec4a2267f5b0d2eec9c1b21b061ce2be55f"
+checksum = "043175f069eda7b85febe4a74abbaeff828d9f8b448515d3151a14a3542811aa"
 dependencies = [
  "autocfg",
 ]
@@ -256,6 +277,16 @@ dependencies = [
  "adler32",
 ]
 
+[[package]]
+name = "miniz_oxide"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c60c0dfe32c10b43a144bad8fc83538c52f58302c92300ea7ec7bf7b38d5a7b9"
+dependencies = [
+ "adler",
+ "autocfg",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.43"
@@ -308,42 +339,50 @@ dependencies = [
 ]
 
 [[package]]
-name = "oxipng"
-version = "3.0.0"
+name = "once_cell"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5fd695858078338d73862ff3755f820eff0bf4f3304e4b52f22aba53463183a"
+checksum = "260e51e7efe62b592207e9e13a68e43692a7a279171d6ba57abd208bf23645ad"
+
+[[package]]
+name = "oxipng"
+version = "3.0.1"
+source = "git+https://github.com/RReverser/oxipng?branch=crossbeam#d0f86d2e84eb55b423b8ad194a176e71ba3aa2c3"
 dependencies = [
  "bit-vec",
  "byteorder",
  "cloudflare-zlib",
  "crc",
+ "crossbeam-channel",
  "image",
  "indexmap",
  "itertools",
  "libdeflater",
  "log",
- "miniz_oxide",
+ "miniz_oxide 0.4.2",
+ "rayon",
  "rgb",
+ "rustc_version",
  "zopfli",
 ]
 
 [[package]]
 name = "png"
-version = "0.16.6"
+version = "0.16.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c150bf7479fafe3dd8740dbe48cc33b2a3efb7b0fe3483aced8bbc39f6d0238d"
+checksum = "dfe7f9f1c730833200b134370e1d5098964231af8450bce9b78ee3ab5278b970"
 dependencies = [
  "bitflags",
  "crc32fast",
  "deflate",
- "miniz_oxide",
+ "miniz_oxide 0.3.7",
 ]
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.18"
+version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "beae6331a816b1f65d04c45b078fd8e6c93e8071771f41b8163255bbd8d7c8fa"
+checksum = "36e28516df94f3dd551a587da5357459d9b36d945a7c37c3557928c1c2ff2a2c"
 dependencies = [
  "unicode-xid",
 ]
@@ -359,9 +398,9 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.3.1"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62f02856753d04e03e26929f820d0a0a337ebe71f849801eea335d464b349080"
+checksum = "cfd016f0c045ad38b5251be2c9c0ab806917f82da4d36b2a327e5166adad9270"
 dependencies = [
  "autocfg",
  "crossbeam-deque",
@@ -371,12 +410,12 @@ dependencies = [
 
 [[package]]
 name = "rayon-core"
-version = "1.7.1"
+version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e92e15d89083484e11353891f1af602cc661426deb9564c298b270c726973280"
+checksum = "e8c4fec834fb6e6d2dd5eece3c7b432a52f0ba887cf40e595190c4107edc08bf"
 dependencies = [
+ "crossbeam-channel",
  "crossbeam-deque",
- "crossbeam-queue",
  "crossbeam-utils",
  "lazy_static",
  "num_cpus",
@@ -384,33 +423,60 @@ dependencies = [
 
 [[package]]
 name = "rgb"
-version = "0.8.20"
+version = "0.8.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90ef54b45ae131327a88597e2463fee4098ad6c88ba7b6af4b3987db8aad4098"
+checksum = "287f3c3f8236abb92d8b7e36797f19159df4b58f0a658cc3fb6dd3004b1f3bd3"
 dependencies = [
  "bytemuck",
 ]
 
+[[package]]
+name = "rustc_version"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
+[[package]]
+name = "semver"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
+dependencies = [
+ "semver-parser",
+]
+
+[[package]]
+name = "semver-parser"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
+
 [[package]]
 name = "squoosh-oxipng"
 version = "0.1.0"
 dependencies = [
+ "crossbeam-channel",
  "log",
+ "once_cell",
  "oxipng",
+ "rayon",
  "wasm-bindgen",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.34"
+version = "1.0.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "936cae2873c940d92e697597c5eee105fb570cd5689c695806f672883653349b"
+checksum = "6690e3e9f692504b941dc6c3b188fd28df054f7fb8469ab40680df52fdcc842b"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -431,9 +497,9 @@ checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.64"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a634620115e4a229108b71bde263bb4220c483b3f07f5ba514ee8d15064c4c2"
+checksum = "1ac64ead5ea5f05873d7c12b545865ca2b8d28adfc50a49b84770a3a97265d42"
 dependencies = [
  "cfg-if",
  "wasm-bindgen-macro",
@@ -441,9 +507,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.64"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e53963b583d18a5aa3aaae4b4c1cb535218246131ba22a71f05b518098571df"
+checksum = "f22b422e2a757c35a73774860af8e112bff612ce6cb604224e8e47641a9e4f68"
 dependencies = [
  "bumpalo",
  "lazy_static",
@@ -456,9 +522,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.64"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fcfd5ef6eec85623b4c6e844293d4516470d8f19cd72d0d12246017eb9060b8"
+checksum = "6b13312a745c08c469f0b292dd2fcd6411dba5f7160f593da6ef69b64e407038"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -466,9 +532,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.64"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9adff9ee0e94b926ca81b57f57f86d5545cdcb1d259e21ec9bdd95b901754c75"
+checksum = "f249f06ef7ee334cc3b8ff031bfc11ec99d00f34d86da7498396dc1e3b1498fe"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -479,9 +545,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.64"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f7b90ea6c632dd06fd765d44542e234d5e63d9bb917ecd64d79778a13bd79ae"
+checksum = "1d649a3145108d7d3fbcde896a468d1bd636791823c9921135218ad89be08307"
 
 [[package]]
 name = "zopfli"

codecs/oxipng/Cargo.toml

@@ -12,7 +12,19 @@ crate-type = ["cdylib"]
 oxipng = { version = "3.0.0", default-features = false }
 wasm-bindgen = "0.2.64"
 log = { version = "0.4", features = ["release_max_level_off"] }
+rayon = { version = "1.3.0", optional = true }
+once_cell = { version = "1.3.1", optional = true }
+crossbeam-channel = { version = "0.4.2", optional = true }
+
+[patch.crates-io]
+oxipng = { git = "https://github.com/RReverser/oxipng", branch = "crossbeam" }
 
 [profile.release]
 lto = true
 opt-level = "s"
+
+[features]
+parallel = ["oxipng/parallel", "rayon", "crossbeam-channel", "once_cell"]
+
+[package.metadata.wasm-pack.profile.release]
+wasm-opt = ["-O", "--no-validation"]

codecs/oxipng/Dockerfile

@@ -1,12 +0,0 @@
-FROM rust
-RUN rustup target add wasm32-unknown-unknown
-RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
-
-RUN mkdir /opt/wabt && \
-  curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.17/wabt-1.0.17-ubuntu.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
-
-RUN mkdir /opt/wasi-sdk && \
-  curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-11/wasi-sdk-11.0-linux.tar.gz | tar -xzf - -C /opt/wasi-sdk --strip 1
-
-ENV PATH="/opt/wabt/bin:/opt/wasi-sdk/bin:${PATH}"
-WORKDIR /src

codecs/oxipng/build.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -e
+
+rm -rf pkg,{-parallel}
+wasm-pack build
+RUSTFLAGS='-C target-feature=+atomics,+bulk-memory' wasm-pack build -t web -d pkg-parallel -- -Z build-std=panic_abort,std --features=parallel
+sed -i "s|input = import.meta.url.replace(/\\\.js$/, '_bg.wasm');||" pkg{,-parallel}/squoosh_oxipng.js
+rm pkg{,-parallel}/.gitignore

codecs/oxipng/index.ts

@@ -0,0 +1,10 @@
+import { threads } from 'wasm-feature-detect';
+
+async function init() {
+  if (await threads()) {
+    return (await import('./spawn')).default;
+  }
+  return import('./pkg');
+}
+
+export default init();

codecs/oxipng/package.json

@@ -1,6 +1,6 @@
 {
   "name": "oxipng",
   "scripts": {
-    "build": "../build-rust.sh"
+    "build": "../build-rust-nightly.sh ./build.sh"
   }
 }

codecs/oxipng/pkg-parallel/README.md

@@ -0,0 +1,5 @@
+# OxiPNG
+
+- Source: <https://github.com/shssoichiro/oxipng>
+- Version: v3.0.0
+- License: MIT

codecs/oxipng/pkg-parallel/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "squoosh-oxipng",
+  "collaborators": [
+    "Ingvar Stepanyan <me@rreverser.com>"
+  ],
+  "version": "0.1.0",
+  "files": [
+    "squoosh_oxipng_bg.wasm",
+    "squoosh_oxipng.js",
+    "squoosh_oxipng.d.ts"
+  ],
+  "module": "squoosh_oxipng.js",
+  "types": "squoosh_oxipng.d.ts",
+  "sideEffects": false
+}

codecs/oxipng/pkg-parallel/squoosh_oxipng.d.ts

@@ -0,0 +1,46 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+* @param {number} num
+* @returns {any}
+*/
+export function worker_initializer(num: number): any;
+/**
+*/
+export function start_main_thread(): void;
+/**
+*/
+export function start_worker_thread(): void;
+/**
+* @param {Uint8Array} data
+* @param {number} level
+* @returns {Uint8Array}
+*/
+export function optimise(data: Uint8Array, level: number): Uint8Array;
+
+export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
+
+export interface InitOutput {
+  readonly malloc: (a: number) => number;
+  readonly free: (a: number) => void;
+  readonly worker_initializer: (a: number) => number;
+  readonly start_main_thread: () => void;
+  readonly start_worker_thread: () => void;
+  readonly optimise: (a: number, b: number, c: number, d: number) => void;
+  readonly __wbindgen_export_0: WebAssembly.Memory;
+  readonly __wbindgen_malloc: (a: number) => number;
+  readonly __wbindgen_free: (a: number, b: number) => void;
+  readonly __wbindgen_start: () => void;
+}
+
+/**
+* If `module_or_path` is {RequestInfo} or {URL}, makes a request and
+* for everything else, calls `WebAssembly.instantiate` directly.
+*
+* @param {InitInput | Promise<InitInput>} module_or_path
+* @param {WebAssembly.Memory} maybe_memory
+*
+* @returns {Promise<InitOutput>}
+*/
+export default function init (module_or_path?: InitInput | Promise<InitInput>, maybe_memory: WebAssembly.Memory): Promise<InitOutput>;
+        

codecs/oxipng/pkg-parallel/squoosh_oxipng.js

@@ -0,0 +1,180 @@
+
+let wasm;
+let memory;
+
+const heap = new Array(32).fill(undefined);
+
+heap.push(undefined, null, true, false);
+
+let heap_next = heap.length;
+
+function addHeapObject(obj) {
+    if (heap_next === heap.length) heap.push(heap.length + 1);
+    const idx = heap_next;
+    heap_next = heap[idx];
+
+    heap[idx] = obj;
+    return idx;
+}
+
+let cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+
+cachedTextDecoder.decode();
+
+let cachegetUint8Memory0 = null;
+function getUint8Memory0() {
+    if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== wasm.__wbindgen_export_0.buffer) {
+        cachegetUint8Memory0 = new Uint8Array(wasm.__wbindgen_export_0.buffer);
+    }
+    return cachegetUint8Memory0;
+}
+
+function getStringFromWasm0(ptr, len) {
+    return cachedTextDecoder.decode(getUint8Memory0().slice(ptr, ptr + len));
+}
+
+function getObject(idx) { return heap[idx]; }
+
+function dropObject(idx) {
+    if (idx < 36) return;
+    heap[idx] = heap_next;
+    heap_next = idx;
+}
+
+function takeObject(idx) {
+    const ret = getObject(idx);
+    dropObject(idx);
+    return ret;
+}
+/**
+* @param {number} num
+* @returns {any}
+*/
+export function worker_initializer(num) {
+    var ret = wasm.worker_initializer(num);
+    return takeObject(ret);
+}
+
+/**
+*/
+export function start_main_thread() {
+    wasm.start_main_thread();
+}
+
+/**
+*/
+export function start_worker_thread() {
+    wasm.start_worker_thread();
+}
+
+let WASM_VECTOR_LEN = 0;
+
+function passArray8ToWasm0(arg, malloc) {
+    const ptr = malloc(arg.length * 1);
+    getUint8Memory0().set(arg, ptr / 1);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+let cachegetInt32Memory0 = null;
+function getInt32Memory0() {
+    if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== wasm.__wbindgen_export_0.buffer) {
+        cachegetInt32Memory0 = new Int32Array(wasm.__wbindgen_export_0.buffer);
+    }
+    return cachegetInt32Memory0;
+}
+
+function getArrayU8FromWasm0(ptr, len) {
+    return getUint8Memory0().subarray(ptr / 1, ptr / 1 + len);
+}
+/**
+* @param {Uint8Array} data
+* @param {number} level
+* @returns {Uint8Array}
+*/
+export function optimise(data, level) {
+    try {
+        const retptr = wasm.__wbindgen_export_1.value - 16;
+        wasm.__wbindgen_export_1.value = retptr;
+        var ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_malloc);
+        var len0 = WASM_VECTOR_LEN;
+        wasm.optimise(retptr, ptr0, len0, level);
+        var r0 = getInt32Memory0()[retptr / 4 + 0];
+        var r1 = getInt32Memory0()[retptr / 4 + 1];
+        var v1 = getArrayU8FromWasm0(r0, r1).slice();
+        wasm.__wbindgen_free(r0, r1 * 1);
+        return v1;
+    } finally {
+        wasm.__wbindgen_export_1.value += 16;
+    }
+}
+
+async function load(module, imports, maybe_memory) {
+    if (typeof Response === 'function' && module instanceof Response) {
+        memory = imports.wbg.memory = new WebAssembly.Memory({initial:17,maximum:16384,shared:true});
+        if (typeof WebAssembly.instantiateStreaming === 'function') {
+            try {
+                return await WebAssembly.instantiateStreaming(module, imports);
+
+            } catch (e) {
+                if (module.headers.get('Content-Type') != 'application/wasm') {
+                    console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
+
+                } else {
+                    throw e;
+                }
+            }
+        }
+
+        const bytes = await module.arrayBuffer();
+        return await WebAssembly.instantiate(bytes, imports);
+
+    } else {
+        memory = imports.wbg.memory = maybe_memory;
+        const instance = await WebAssembly.instantiate(module, imports);
+
+        if (instance instanceof WebAssembly.Instance) {
+            return { instance, module };
+
+        } else {
+            return instance;
+        }
+    }
+}
+
+async function init(input, maybe_memory) {
+    if (typeof input === 'undefined') {
+        
+    }
+    const imports = {};
+    imports.wbg = {};
+    imports.wbg.__wbindgen_module = function() {
+        var ret = init.__wbindgen_wasm_module;
+        return addHeapObject(ret);
+    };
+    imports.wbg.__wbindgen_memory = function() {
+        var ret = wasm.__wbindgen_export_0;
+        return addHeapObject(ret);
+    };
+    imports.wbg.__wbg_of_6510501edc06d65e = function(arg0, arg1) {
+        var ret = Array.of(takeObject(arg0), takeObject(arg1));
+        return addHeapObject(ret);
+    };
+    imports.wbg.__wbindgen_throw = function(arg0, arg1) {
+        throw new Error(getStringFromWasm0(arg0, arg1));
+    };
+
+    if (typeof input === 'string' || (typeof Request === 'function' && input instanceof Request) || (typeof URL === 'function' && input instanceof URL)) {
+        input = fetch(input);
+    }
+
+    const { instance, module } = await load(await input, imports, maybe_memory);
+
+    wasm = instance.exports;
+    init.__wbindgen_wasm_module = module;
+    wasm.__wbindgen_start();
+    return wasm;
+}
+
+export default init;
+

codecs/oxipng/pkg-parallel/squoosh_oxipng_bg.wasm.d.ts

@@ -0,0 +1,12 @@
+/* tslint:disable */
+/* eslint-disable */
+export function malloc(a: number): number;
+export function free(a: number): void;
+export function worker_initializer(a: number): number;
+export function start_main_thread(): void;
+export function start_worker_thread(): void;
+export function optimise(a: number, b: number, c: number, d: number): void;
+export const __wbindgen_export_0: WebAssembly.Memory;
+export function __wbindgen_malloc(a: number): number;
+export function __wbindgen_free(a: number, b: number): void;
+export function __wbindgen_start(): void;

codecs/oxipng/pkg/README.md

@@ -0,0 +1,5 @@
+# OxiPNG
+
+- Source: <https://github.com/shssoichiro/oxipng>
+- Version: v3.0.0
+- License: MIT

codecs/oxipng/pkg/squoosh_oxipng_bg.js

@@ -44,14 +44,20 @@ function getArrayU8FromWasm0(ptr, len) {
 * @returns {Uint8Array}
 */
 export function optimise(data, level) {
-    var ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_malloc);
-    var len0 = WASM_VECTOR_LEN;
-    wasm.optimise(8, ptr0, len0, level);
-    var r0 = getInt32Memory0()[8 / 4 + 0];
-    var r1 = getInt32Memory0()[8 / 4 + 1];
-    var v1 = getArrayU8FromWasm0(r0, r1).slice();
-    wasm.__wbindgen_free(r0, r1 * 1);
-    return v1;
+    try {
+        const retptr = wasm.__wbindgen_export_0.value - 16;
+        wasm.__wbindgen_export_0.value = retptr;
+        var ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_malloc);
+        var len0 = WASM_VECTOR_LEN;
+        wasm.optimise(retptr, ptr0, len0, level);
+        var r0 = getInt32Memory0()[retptr / 4 + 0];
+        var r1 = getInt32Memory0()[retptr / 4 + 1];
+        var v1 = getArrayU8FromWasm0(r0, r1).slice();
+        wasm.__wbindgen_free(r0, r1 * 1);
+        return v1;
+    } finally {
+        wasm.__wbindgen_export_0.value += 16;
+    }
 }
 
 export const __wbindgen_throw = function(arg0, arg1) {

codecs/oxipng/rust-toolchain

@@ -0,0 +1 @@
+nightly

codecs/oxipng/spawn.ts

@@ -0,0 +1,65 @@
+import initOxiPNG, {
+  worker_initializer,
+  start_main_thread,
+  optimise,
+} from './pkg-parallel';
+// @ts-ignore
+import wasmUrl from './pkg-parallel/squoosh_oxipng_bg.wasm';
+import { WorkerInit } from './worker';
+
+function initWorker(worker: Worker, workerInit: WorkerInit) {
+  return new Promise((resolve) => {
+    worker.postMessage(workerInit);
+    worker.addEventListener('message', () => resolve(), { once: true });
+  });
+}
+
+async function startMainThread() {
+  const num = navigator.hardwareConcurrency;
+
+  // First, let browser fetch and spawn Workers for our pool in the background.
+  // This is fairly expensive, so we want to start it as early as possible.
+  const workers = Array.from({ length: num }, () => new Promise<Worker>((resolve) => {
+    const w = new Worker('./worker', { type: 'module' });
+    w.addEventListener('message', () => resolve(w), { once: true });
+  }));
+
+  // Meanwhile, asynchronously compile, instantiate and initialise Wasm on our main thread.
+  await initOxiPNG(fetch(wasmUrl), undefined as any);
+
+  // Get module+memory from the Wasm instance.
+  //
+  // Ideally we wouldn't go via Wasm bindings here, since both are just JS variables, but memory is
+  // currently not exposed on the Wasm instance correctly by wasm-bindgen.
+  const workerInit: WorkerInit = worker_initializer(num);
+
+  // Once done, we want to send module+memory to each Worker so that they instantiate Wasm too.
+  // While doing so, we need to wait for Workers to acknowledge that they have received our message.
+  // Ideally this shouldn't be necessary, but Chromium currently doesn't conform to the spec:
+  // https://bugs.chromium.org/p/chromium/issues/detail?id=1075645
+  //
+  // If we didn't do this ping-pong game, the `start_main_thread` below would block the current
+  // thread on an atomic before even *sending* the `postMessage` containing memory,
+  // so Workers would never be able to unblock us back.
+
+  // TODO: remove this line.
+  // It waits for all workers to be created just to repro a possible V8 bug.
+  const resolvedWorkers = await Promise.all(workers);
+
+  await Promise.all(resolvedWorkers.map(worker => initWorker(worker, workerInit)));
+
+  // Finally, instantiate rayon pool - this will use shared Wasm memory to send tasks to the
+  // Workers and then block until they're all ready.
+  start_main_thread();
+
+  return {
+    optimise,
+    freeWorkers: () => {
+      for (const worker of resolvedWorkers) {
+        worker.terminate();
+      }
+    },
+  };
+}
+
+export default () => startMainThread();

codecs/oxipng/src/lib.rs

@@ -1,9 +1,12 @@
-mod malloc_shim;
-
 use wasm_bindgen::prelude::*;
 use oxipng::AlphaOptim;
 
-#[wasm_bindgen(catch)]
+mod malloc_shim;
+
+#[cfg(feature = "parallel")]
+pub mod parallel;
+
+#[wasm_bindgen]
 pub fn optimise(data: &[u8], level: u8) -> Vec<u8> {
   let mut options = oxipng::Options::from_preset(level);
   options.alphas.insert(AlphaOptim::Black);

codecs/oxipng/src/parallel.rs

@@ -0,0 +1,61 @@
+use crossbeam_channel::{Sender, Receiver, bounded};
+use once_cell::sync::OnceCell;
+use wasm_bindgen::prelude::*;
+use wasm_bindgen::JsValue;
+
+#[wasm_bindgen]
+extern "C" {
+    #[wasm_bindgen(js_namespace = Array, js_name = of)]
+    fn array_of_2(a: JsValue, b: JsValue) -> JsValue;
+}
+
+// This is one of the parts that work around Chromium incorrectly implementing postMessage:
+// https://bugs.chromium.org/p/chromium/issues/detail?id=1075645
+//
+// rayon::ThreadPoolBuilder (used below) executes spawn handler to populate the worker pool,
+// and then blocks the current thread until each worker unblocks its (opaque) lock.
+//
+// Normally, we could use postMessage directly inside the spawn handler to
+// post module + memory + threadPtr to each worker, and the block the current thread.
+//
+// However, that bug means that postMessage is currently delayed until the next event loop,
+// which will never spin since we block the current thread, and so the other workers will
+// never be able to unblock us.
+//
+// To work around this problem, we:
+// 1) Expose `worker_initializer` that returns module + memory pair (without threadPtr)
+//    that workers can be initialised with to become native threads.
+//    JavaScript can postMessage this pair in advance, and asynchronously wait for workers
+//    to acknowledge the receipt.
+// 2) Create a global communication channel on the Rust side using crossbeam.
+//    It will be used to send threadPtr to the pre-initialised workers
+//    instead of postMessage.
+// 3) Provide a separate `start_main_thread` that expects all workers to be ready,
+//    and just uses the provided channel to send `threadPtr`s using the
+//    shared memory and blocks the current thread until they're all grabbed.
+// 4) Provide a `worker_initializer` that is expected to be invoked from various workers,
+//    reads one `threadPtr` from the shared channel and starts running it.
+static CHANNEL: OnceCell<(Sender<rayon::ThreadBuilder>, Receiver<rayon::ThreadBuilder>)> = OnceCell::new();
+
+#[wasm_bindgen]
+pub fn worker_initializer(num: usize) -> JsValue {
+    CHANNEL.get_or_init(|| bounded(num));
+    array_of_2(wasm_bindgen::module(), wasm_bindgen::memory())
+}
+
+#[wasm_bindgen]
+pub fn start_main_thread() {
+    let (sender, _) = CHANNEL.get().unwrap();
+
+    rayon::ThreadPoolBuilder::new()
+        .num_threads(sender.capacity().unwrap())
+        .spawn_handler(|thread| Ok(sender.send(thread).unwrap_throw()))
+        .build_global()
+        .unwrap_throw()
+}
+
+#[wasm_bindgen]
+pub fn start_worker_thread() {
+    let (_, receiver) = CHANNEL.get().unwrap();
+    receiver.recv().unwrap_throw().run()
+}

codecs/oxipng/worker.ts

@@ -0,0 +1,28 @@
+/// <reference lib="webworker" />
+
+import initOxiPNG, { start_worker_thread } from './pkg-parallel';
+
+export type WorkerInit = [WebAssembly.Module, WebAssembly.Memory];
+
+// TODO: remove this line.
+// It allows main thread to wait for a Worker to be created just to repro a possible V8 bug.
+postMessage(null);
+
+addEventListener(
+  'message',
+  async (event) => {
+    // Tell the "main" thread that we've received the message.
+    //
+    // At this point, the "main" thread can run Wasm that
+    // will synchronously block waiting on other atomics.
+    //
+    // Note that we don't need to wait for Wasm instantiation here - it's
+    // better to start main thread as early as possible, and then it blocks
+    // on a shared atomic anyway until Worker is fully ready.
+    postMessage(null);
+
+    await initOxiPNG(...(event.data as WorkerInit));
+    start_worker_thread();
+  },
+  { once: true },
+);

codecs/rust.Dockerfile

@@ -1,9 +1,13 @@
+ARG RUST_IMG=rust:1.44-stretch
+
 FROM emscripten/emsdk:1.39.19 AS wasm-tools
 WORKDIR /opt/wasm-tools
 RUN wget -qO- https://github.com/rustwasm/wasm-pack/releases/download/v0.9.1/wasm-pack-v0.9.1-x86_64-unknown-linux-musl.tar.gz | tar -xzf - --strip 1
 
-FROM rust:1.44-stretch AS rust
+FROM $RUST_IMG AS rust
+ARG RUST_IMG
 RUN rustup target add wasm32-unknown-unknown
+RUN if [ "$RUST_IMG" = "rustlang/rust:nightly" ] ; then rustup component add rust-src ; fi
 COPY --from=wasm-tools /emsdk/upstream/bin/wasm-opt /emsdk/upstream/bin/clang /usr/local/bin/
 COPY --from=wasm-tools /emsdk/upstream/lib/ /usr/local/lib/
 COPY --from=wasm-tools /emsdk/upstream/emscripten/system/include/libc/ /wasm32/include/

codecs/webp/dec/webp_dec.d.ts

@@ -2,4 +2,4 @@ interface WebPModule extends EmscriptenWasm.Module {
   decode(data: BufferSource): ImageData | null;
 }
 
-export default function(opts: EmscriptenWasm.ModuleOpts): WebPModule;
+export default function(opts: EmscriptenWasm.ModuleOpts): Promise<WebPModule>;

codecs/webp/enc/webp_enc.d.ts

@@ -4,4 +4,4 @@ interface WebPModule extends EmscriptenWasm.Module {
   encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array | null;
 }
 
-export default function(opts: EmscriptenWasm.ModuleOpts): WebPModule;
+export default function(opts: EmscriptenWasm.ModuleOpts): Promise<WebPModule>;

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-lock.json

@@ -4639,6 +4639,12 @@
         "minimalistic-crypto-utils": "^1.0.0"
       }
     },
+    "emoji-regex": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
+      "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
+      "dev": true
+    },
     "emojis-list": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/emojis-list/-/emojis-list-2.1.0.tgz",
@@ -6392,22 +6398,14 @@
       }
     },
     "globule": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/globule/-/globule-1.3.1.tgz",
-      "integrity": "sha512-OVyWOHgw29yosRHCHo7NncwR1hW5ew0W/UrvtwvjefVJeQ26q4/8r8FmPsSF1hJ93IgWkyv16pCTz6WblMzm/g==",
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/globule/-/globule-1.3.2.tgz",
+      "integrity": "sha512-7IDTQTIu2xzXkT+6mlluidnWo+BypnbSoEVVQCGfzqnl5Ik8d3e1d4wycb8Rj9tWW+Z39uPWsdlquqiqPCd/pA==",
       "dev": true,
       "requires": {
         "glob": "~7.1.1",
-        "lodash": "~4.17.12",
+        "lodash": "~4.17.10",
         "minimatch": "~3.0.2"
-      },
-      "dependencies": {
-        "lodash": {
-          "version": "4.17.15",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
-          "dev": true
-        }
       }
     },
     "got": {
@@ -8603,9 +8601,9 @@
       }
     },
     "js-base64": {
-      "version": "2.5.2",
-      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-2.5.2.tgz",
-      "integrity": "sha512-Vg8czh0Q7sFBSUMWWArX/miJeBWYBPpdU/3M/DKSaekLMqrqVPaedp+5mZhie/r0lgrcaYBfwXatEew6gwgiQQ==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-2.6.4.tgz",
+      "integrity": "sha512-pZe//GGmwJndub7ZghVHz7vjb2LgC1m8B07Au3eYqeqv9emhESByMXxaEgkUkEqJe87oBbSniGYoQNIBklc7IQ==",
       "dev": true
     },
     "js-levenshtein": {
@@ -9785,9 +9783,9 @@
       }
     },
     "node-sass": {
-      "version": "4.13.0",
-      "resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.13.0.tgz",
-      "integrity": "sha512-W1XBrvoJ1dy7VsvTAS5q1V45lREbTlZQqFbiHb3R3OTTCma0XBtuG6xZ6Z4506nR4lmHPTqVRwxT6KgtWC97CA==",
+      "version": "4.14.1",
+      "resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.14.1.tgz",
+      "integrity": "sha512-sjCuOlvGyCJS40R8BscF5vhVlQjNN069NtQ1gSxyK1u9iqvn6tf7O1R4GNowVZfiZUCRt5MmMs1xd+4V/7Yr0g==",
       "dev": true,
       "requires": {
         "async-foreach": "^0.1.3",
@@ -9804,15 +9802,15 @@
         "node-gyp": "^3.8.0",
         "npmlog": "^4.0.0",
         "request": "^2.88.0",
-        "sass-graph": "^2.2.4",
+        "sass-graph": "2.2.5",
         "stdout-stream": "^1.4.0",
         "true-case-path": "^1.0.2"
       },
       "dependencies": {
         "ajv": {
-          "version": "6.12.0",
-          "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.0.tgz",
-          "integrity": "sha512-D6gFiFA0RRLyUbvijN74DWAjXSFxWKaWP7mldxkVhyhAV3+SWA9HEJPHQ2c9soIeTFJqcSdFDGFgdqs1iUU2Hw==",
+          "version": "6.12.5",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.5.tgz",
+          "integrity": "sha512-lRF8RORchjpKG50/WFf8xmg7sgCLFiYNNnqdKflk63whMQcWR5ngGjiSXkL9bjxy6B2npOK2HSMN49jEBMSkag==",
           "dev": true,
           "requires": {
             "fast-deep-equal": "^3.1.1",
@@ -9857,9 +9855,9 @@
           "dev": true
         },
         "fast-deep-equal": {
-          "version": "3.1.1",
-          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.1.tgz",
-          "integrity": "sha512-8UEa58QDLauDNfpbrX55Q9jrGHThw2ZMdOky5Gl1CDtVeJDPVrG4Jxx1N8jw2gkWaff5UUuX1KJd+9zGe2B+ZA==",
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+          "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
           "dev": true
         },
         "get-stdin": {
@@ -9869,25 +9867,25 @@
           "dev": true
         },
         "har-validator": {
-          "version": "5.1.3",
-          "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.1.3.tgz",
-          "integrity": "sha512-sNvOCzEQNr/qrvJgc3UG/kD4QtlHycrzwS+6mfTrrSq97BvaYcPZZI1ZSqGSPR73Cxn4LKTD4PttRwfU7jWq5g==",
+          "version": "5.1.5",
+          "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.1.5.tgz",
+          "integrity": "sha512-nmT2T0lljbxdQZfspsno9hgrG3Uir6Ks5afism62poxqBM6sDnMEuPmzTq8XN0OEwqKLLdh1jQI3qyE66Nzb3w==",
           "dev": true,
           "requires": {
-            "ajv": "^6.5.5",
+            "ajv": "^6.12.3",
             "har-schema": "^2.0.0"
           }
         },
         "lodash": {
-          "version": "4.17.15",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
+          "version": "4.17.20",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==",
           "dev": true
         },
         "nan": {
-          "version": "2.14.0",
-          "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
-          "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==",
+          "version": "2.14.1",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.1.tgz",
+          "integrity": "sha512-isWHgVjnFjh2x2yuJ/tj3JbwoHu3UC2dX5G/88Cm24yB6YopVgxvBObDY7n5xW6ExmFhJpSEQqFPvq9zaXc8Jw==",
           "dev": true
         },
         "oauth-sign": {
@@ -10246,15 +10244,6 @@
       "integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
       "dev": true
     },
-    "os-locale": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
-      "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
-      "dev": true,
-      "requires": {
-        "lcid": "^1.0.0"
-      }
-    },
     "os-tmpdir": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
@@ -12884,15 +12873,15 @@
       }
     },
     "sass-graph": {
-      "version": "2.2.4",
-      "resolved": "https://registry.npmjs.org/sass-graph/-/sass-graph-2.2.4.tgz",
-      "integrity": "sha1-E/vWPNHK8JCLn9k0dq1DpR0eC0k=",
+      "version": "2.2.5",
+      "resolved": "https://registry.npmjs.org/sass-graph/-/sass-graph-2.2.5.tgz",
+      "integrity": "sha512-VFWDAHOe6mRuT4mZRd4eKE+d8Uedrk6Xnh7Sh9b4NGufQLQjOrvf/MQoOdx+0s92L89FeyUUNfU597j/3uNpag==",
       "dev": true,
       "requires": {
         "glob": "^7.0.0",
         "lodash": "^4.0.0",
         "scss-tokenizer": "^0.2.3",
-        "yargs": "^7.0.0"
+        "yargs": "^13.3.2"
       }
     },
     "sass-loader": {
@@ -15354,6 +15343,11 @@
         "makeerror": "1.0.x"
       }
     },
+    "wasm-feature-detect": {
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/wasm-feature-detect/-/wasm-feature-detect-1.2.6.tgz",
+      "integrity": "sha512-r255tPhr5k7vet9zKQch0alB7ZduiXoQGC3Cn58CLgbSyp/KIb7fFpcg4pMulQDxIjeFqCxLdln4ubCGGBPicg=="
+    },
     "watchpack": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-1.6.0.tgz",
@@ -16159,9 +16153,9 @@
       }
     },
     "which-module": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/which-module/-/which-module-1.0.0.tgz",
-      "integrity": "sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
       "dev": true
     },
     "wide-align": {
@@ -16289,53 +16283,148 @@
       "dev": true
     },
     "yargs": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-7.1.0.tgz",
-      "integrity": "sha1-a6MY6xaWFyf10oT46gA+jWFU0Mg=",
+      "version": "13.3.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz",
+      "integrity": "sha512-AX3Zw5iPruN5ie6xGRIDgqkT+ZhnRlZMLMHAs8tg7nRruy2Nb+i5o9bwghAogtM08q1dpr2LVoS8KSTMYpWXUw==",
       "dev": true,
       "requires": {
-        "camelcase": "^3.0.0",
-        "cliui": "^3.2.0",
-        "decamelize": "^1.1.1",
-        "get-caller-file": "^1.0.1",
-        "os-locale": "^1.4.0",
-        "read-pkg-up": "^1.0.1",
+        "cliui": "^5.0.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^2.0.1",
         "require-directory": "^2.1.1",
-        "require-main-filename": "^1.0.1",
+        "require-main-filename": "^2.0.0",
         "set-blocking": "^2.0.0",
-        "string-width": "^1.0.2",
-        "which-module": "^1.0.0",
-        "y18n": "^3.2.1",
-        "yargs-parser": "^5.0.0"
+        "string-width": "^3.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^13.1.2"
       },
       "dependencies": {
-        "camelcase": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
-          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
           "dev": true
         },
-        "y18n": {
-          "version": "3.2.1",
-          "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-          "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
+        "cliui": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
+          "integrity": "sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==",
+          "dev": true,
+          "requires": {
+            "string-width": "^3.1.0",
+            "strip-ansi": "^5.2.0",
+            "wrap-ansi": "^5.1.0"
+          }
+        },
+        "find-up": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
+          "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
+          "dev": true,
+          "requires": {
+            "locate-path": "^3.0.0"
+          }
+        },
+        "get-caller-file": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-2.0.5.tgz",
+          "integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==",
           "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "locate-path": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
+          "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
+          "dev": true,
+          "requires": {
+            "p-locate": "^3.0.0",
+            "path-exists": "^3.0.0"
+          }
+        },
+        "p-limit": {
+          "version": "2.3.0",
+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
+          "integrity": "sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==",
+          "dev": true,
+          "requires": {
+            "p-try": "^2.0.0"
+          }
+        },
+        "p-locate": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
+          "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
+          "dev": true,
+          "requires": {
+            "p-limit": "^2.0.0"
+          }
+        },
+        "p-try": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+          "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
+          "dev": true
+        },
+        "require-main-filename": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-2.0.0.tgz",
+          "integrity": "sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        },
+        "wrap-ansi": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
+          "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.0",
+            "string-width": "^3.0.0",
+            "strip-ansi": "^5.0.0"
+          }
         }
       }
     },
     "yargs-parser": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-5.0.0.tgz",
-      "integrity": "sha1-J17PDX/+Bcd+ZOfIbkzZS/DhIoo=",
+      "version": "13.1.2",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+      "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
       "dev": true,
       "requires": {
-        "camelcase": "^3.0.0"
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
       },
       "dependencies": {
         "camelcase": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
-          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
+          "version": "5.3.1",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+          "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
           "dev": true
         }
       }

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",
@@ -73,5 +73,8 @@
     "webpack-cli": "3.3.4",
     "webpack-dev-server": "3.8.0",
     "worker-plugin": "3.1.0"
+  },
+  "dependencies": {
+    "wasm-feature-detect": "^1.2.6"
   }
 }

src/codecs/avif/encoder.ts

@@ -1,12 +1,34 @@
-import avif_enc, { AVIFModule } from '../../../codecs/avif/enc/avif_enc';
-import wasmUrl from '../../../codecs/avif/enc/avif_enc.wasm';
+import mainUrlWithMT from 'file-loader!../../../codecs/avif/enc/avif_enc_mt.js';
+import { AVIFModule } from '../../../codecs/avif/enc/avif_enc.js';
+import wasmUrlWithoutMT from '../../../codecs/avif/enc/avif_enc.wasm';
+import wasmUrlWithMT from '../../../codecs/avif/enc/avif_enc_mt.wasm';
+import workerUrl from '../../../codecs/avif/enc/avif_enc_mt.worker.js';
 import { EncodeOptions } from './encoder-meta';
-import { initEmscriptenModule } from '../util';
+import { initEmscriptenModule, ModuleFactory } from '../util';
+import { threads } from 'wasm-feature-detect';
+
+declare const avif_enc_mt: ModuleFactory<AVIFModule>;
 
 let emscriptenModule: Promise<AVIFModule>;
 
+async function init() {
+  if (await threads()) {
+    importScripts(mainUrlWithMT);
+    return initEmscriptenModule<AVIFModule>(
+      avif_enc_mt,
+      wasmUrlWithMT,
+      workerUrl,
+      mainUrlWithMT,
+    );
+  }
+  return initEmscriptenModule(
+    (await import('../../../codecs/avif/enc/avif_enc.js')).default,
+    wasmUrlWithoutMT,
+  );
+}
+
 export async function encode(data: ImageData, options: EncodeOptions): Promise<ArrayBuffer> {
-  if (!emscriptenModule) emscriptenModule = initEmscriptenModule(avif_enc, wasmUrl);
+  if (!emscriptenModule) emscriptenModule = init();
 
   const module = await emscriptenModule;
   const result = module.encode(data.data, data.width, data.height, options);

src/codecs/oxipng/encoder.ts

@@ -1,6 +1,12 @@
-import { optimise } from '../../../codecs/oxipng/pkg';
+// @ts-ignore
+import init from '../../../codecs/oxipng/spawn';
 import { EncodeOptions } from './encoder-meta';
 
 export async function compress(data: ArrayBuffer, options: EncodeOptions): Promise<ArrayBuffer> {
-  return optimise(new Uint8Array(data), options.level).buffer;
+  for (let i = 0; i < 100; i += 1) {
+    const optimiser = await init();
+    console.log(`Run #${i}: ${optimiser.optimise(new Uint8Array(data), options.level).buffer.byteLength} bytes`);
+    optimiser.freeWorkers();
+  }
+  return (await init()).optimise(new Uint8Array(data), options.level).buffer;
 }

src/codecs/util.ts

@@ -1,28 +1,23 @@
-type ModuleFactory<M extends EmscriptenWasm.Module> = (
+export type ModuleFactory<M extends EmscriptenWasm.Module> = (
   opts: EmscriptenWasm.ModuleOpts,
-) => M;
+) => Promise<M>;
 
 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
-      noInitialRun: true,
-      locateFile(url: string): string {
-        // Redirect the request for the wasm binary to whatever webpack gave us.
-        if (url.endsWith('.wasm')) return wasmUrl;
-        return url;
-      },
-      onRuntimeInitialized() {
-        // An Emscripten is a then-able that resolves with itself, causing an infite loop when you
-        // wrap it in a real promise. Delete the `then` prop solves this for now.
-        // https://github.com/kripken/emscripten/issues/5820
-        delete (module as any).then;
-        resolve(module);
-      },
-    });
+  return 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;
+    },
   });
 }
 

src/components/App/index.tsx

@@ -75,7 +75,7 @@ export default class App extends Component<Props, State> {
     // really breaks things on Squoosh, as you can easily end up zooming the UI when you mean to
     // zoom the image. Once you've done this, it's really difficult to undo. Anyway, this seems to
     // prevent it.
-    document.body.addEventListener('gesturestart', (event) => {
+    document.body.addEventListener('gesturestart', (event: any) => {
       event.preventDefault();
     });
 

src/components/compress/index.tsx

@@ -232,7 +232,7 @@ export default class Compress extends Component<Props, State> {
       {
         latestSettings: {
           preprocessorState: defaultPreprocessorState,
-          encoderState: { type: mozJPEG.type, options: mozJPEG.defaultOptions },
+          encoderState: { type: oxiPNG.type, options: oxiPNG.defaultOptions },
         },
         loadingCounter: 0,
         loadedCounter: 0,

src/missing-types.d.ts

@@ -33,6 +33,20 @@ declare module 'url-loader!*' {
   export default value;
 }
 
+declare module 'file-loader!*' {
+  const value: string;
+  export default value;
+}
+
+declare module '*.worker.js' {
+  const value: string;
+  export default value;
+}
+
+declare module 'wasm-feature-detect' {
+  export const threads: () => Promise<boolean>;
+}
+
 declare var VERSION: string;
 
 declare var ga: {

webpack.config.js

@@ -149,7 +149,7 @@ module.exports = async function(_, env) {
         {
           // Emscripten modules don't work with Webpack's Wasm loader.
           test: /\.wasm$/,
-          exclude: /_bg\.wasm$/,
+          exclude: /(?<!\bpkg-parallel[\\/]squoosh_oxipng)_bg\.wasm$/,
           // This is needed to make webpack NOT process wasm files.
           // See https://github.com/webpack/webpack/issues/6725
           type: 'javascript/auto',
@@ -160,11 +160,11 @@ module.exports = async function(_, env) {
         },
         {
           // Wasm modules generated by Rust + wasm-pack work great with Webpack.
-          test: /_bg\.wasm$/,
+          test: /(?<!\bpkg-parallel[\\/]squoosh_oxipng)_bg\.wasm$/,
           type: 'webassembly/experimental',
         },
         {
-          test: /\.(png|svg|jpg|gif)$/,
+          test: /\.(png|svg|jpg|gif|worker\.js)$/,
           loader: 'file-loader',
           options: {
             name: '[name].[hash:5].[ext]',
@@ -174,8 +174,7 @@ module.exports = async function(_, env) {
     },
     plugins: [
       new webpack.IgnorePlugin(
-        /(fs|crypto|path)/,
-        /[/\\]codecs[/\\]/
+        /^(fs|crypto|path|perf_hooks|worker_threads)$/
       ),
 
       // Pretty progressbar showing build progress: