Merge pull request #804 from GoogleChromeLabs/avif-options

codecs/avif/Makefile

@@ -0,0 +1,76 @@
+CODEC_URL = https://github.com/AOMediaCodec/libavif/archive/v0.8.1.tar.gz
+CODEC_DIR = node_modules/libavif
+CODEC_BUILD_DIR := $(CODEC_DIR)/build
+CODEC_OUT := $(CODEC_BUILD_DIR)/libavif.a
+
+LIBAOM_URL = https://aomedia.googlesource.com/aom/+archive/v2.0.0.tar.gz
+LIBAOM_DIR := $(CODEC_DIR)/ext/aom
+LIBAOM_BUILD_DIR := $(LIBAOM_DIR)/build.libavif
+LIBAOM_OUT := $(LIBAOM_BUILD_DIR)/libaom.a
+
+OUT_JS = enc/avif_enc.js dec/avif_dec.js
+OUT_WASM = $(OUT_JS:.js=.wasm)
+
+.PHONY: all clean
+
+all: $(OUT_JS)
+
+%.js: %.cpp $(LIBAOM_OUT) $(CODEC_OUT)
+	$(CXX) \
+		-I $(CODEC_DIR)/include \
+		${CXXFLAGS} \
+		${LDFLAGS} \
+		--bind \
+		--closure 1 \
+		-s ALLOW_MEMORY_GROWTH=1 \
+		-s MODULARIZE=1 \
+		-s 'EXPORT_NAME="$(basename $(@F))"' \
+		-o $@ \
+		$+
+
+$(CODEC_OUT): $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_OUT)
+	mkdir -p $(CODEC_BUILD_DIR)
+	cd $(CODEC_BUILD_DIR) && \
+	emcmake cmake \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DBUILD_SHARED_LIBS=0 \
+		-DAVIF_CODEC_AOM=1 \
+		-DAVIF_LOCAL_AOM=1 \
+		../ && \
+	$(MAKE)
+
+$(LIBAOM_OUT): $(LIBAOM_DIR)/CMakeLists.txt
+	mkdir -p $(LIBAOM_BUILD_DIR)
+	cd $(LIBAOM_BUILD_DIR) && \
+	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_MULTITHREAD=0 \
+		-DCONFIG_RUNTIME_CPU_DETECT=0 \
+		-DCONFIG_WEBM_IO=0 \
+		../ && \
+	$(MAKE)
+
+$(CODEC_DIR)/CMakeLists.txt: $(CODEC_DIR)
+
+$(LIBAOM_DIR)/CMakeLists.txt: $(LIBAOM_DIR)
+
+$(CODEC_DIR):
+	mkdir -p $@
+	curl -sL $(CODEC_URL) | tar xz --strip 1 -C $@
+
+$(LIBAOM_DIR):
+	mkdir -p $@
+	curl -sL $(LIBAOM_URL) | tar xz -C $@
+
+clean:
+	$(RM) $(OUT_JS) $(OUT_WASM)
+	$(MAKE) -C $(CODEC_BUILD_DIR) clean
+	$(MAKE) -C $(LIBAOM_BUILD_DIR) clean

codecs/avif/dec/README.md

@@ -0,0 +1,14 @@
+# AVIF decoder
+
+- Source: <https://github.com/AOMediaCodec/libavif>
+- Version: v0.5.4
+
+## Example
+
+See `example.html`
+
+## API
+
+### `RawImage decode(std::string buffer)`
+
+Decodes the given avif buffer into raw RGBA. `RawImage` is a class with 3 fields: `buffer`, `width`, and `height`.

codecs/avif/dec/avif_dec.cpp

@@ -0,0 +1,50 @@
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+#include "avif/avif.h"
+
+using namespace emscripten;
+
+thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
+thread_local const val ImageData = val::global("ImageData");
+
+val decode(std::string avifimage) {
+  // point raw.data and raw.size to the contents of an .avif(s)
+  avifROData raw = {
+    .data = (uint8_t*)avifimage.c_str(),
+    .size = avifimage.length()
+  };
+
+  avifImage* image = avifImageCreateEmpty();
+  avifDecoder* decoder = avifDecoderCreate();
+  avifResult decodeResult = avifDecoderRead(decoder, image, &raw);
+  // image is an independent copy of decoded data, decoder may be destroyed here
+  avifDecoderDestroy(decoder);
+
+  val result = val::null();
+
+  if (decodeResult == AVIF_RESULT_OK) {
+    // Convert to interleaved RGB(A)/BGR(A) using a libavif-allocated buffer.
+    avifRGBImage rgb;
+    avifRGBImageSetDefaults(&rgb, image);  // Defaults to AVIF_RGB_FORMAT_RGBA which is what we want.
+    rgb.depth = 8;  // Does not need to match image->depth. We always want 8-bit pixels.
+
+    avifRGBImageAllocatePixels(&rgb);
+    avifImageYUVToRGB(image, &rgb);
+
+    // We want to create a *copy* of the decoded data to be owned by the JavaScript side.
+    // For that, we perform `new Uint8Array(wasmMemBuffer, wasmPtr, wasmSize).slice()`:
+    result = ImageData.new_(Uint8ClampedArray.new_(typed_memory_view(rgb.rowBytes * rgb.height, rgb.pixels)), rgb.width, rgb.height);
+
+    // Now we can safely free the RGB pixels:
+    avifRGBImageFreePixels(&rgb);
+  }
+
+  // Image has been converted to RGB, we don't need the original anymore.
+  avifImageDestroy(image);
+
+  return result;
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  function("decode", &decode);
+}

codecs/avif/dec/avif_dec.d.ts

@@ -0,0 +1,6 @@
+interface AVIFModule extends EmscriptenWasm.Module {
+  decode(data: BufferSource): ImageData | null;
+}
+
+export default function(opts: EmscriptenWasm.ModuleOpts): AVIFModule;
+

codecs/avif/dec/avif_dec.js

@@ -0,0 +1,72 @@
+
+var avif_dec = (function() {
+  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
+  if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
+  return (
+function(avif_dec) {
+  avif_dec = avif_dec || {};
+
+
+var d;d||(d=typeof avif_dec !== 'undefined' ? avif_dec : {});var aa,ba;d.ready=new Promise(function(a,b){aa=a;ba=b});var r={},t;for(t in d)d.hasOwnProperty(t)&&(r[t]=d[t]);var u=!1,v=!1,ca=!1,da=!1;u="object"===typeof window;v="function"===typeof importScripts;ca="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;da=!u&&!ca&&!v;var w="",x,z,ea,fa;
+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]"};
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+function pa(a,b){var c=a>>1;for(var e=c+b/2;!(c>=e)&&G[c];)++c;c<<=1;if(32<c-a&&oa)return oa.decode(F.subarray(a,c));c=0;for(e="";;){var f=H[a+2*c>>1];if(0==f||c==b/2)return e;++c;e+=String.fromCharCode(f)}}function qa(a,b,c){void 0===c&&(c=2147483647);if(2>c)return 0;c-=2;var e=b;c=c<2*a.length?c/2:a.length;for(var f=0;f<c;++f)H[b>>1]=a.charCodeAt(f),b+=2;H[b>>1]=0;return b-e}function ra(a){return 2*a.length}
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+var Ma=d.___wasm_call_ctors=function(){return(Ma=d.___wasm_call_ctors=d.asm.G).apply(null,arguments)},wb=d._malloc=function(){return(wb=d._malloc=d.asm.H).apply(null,arguments)},W=d._free=function(){return(W=d._free=d.asm.I).apply(null,arguments)},mb=d.___getTypeName=function(){return(mb=d.___getTypeName=d.asm.J).apply(null,arguments)};d.___embind_register_native_and_builtin_types=function(){return(d.___embind_register_native_and_builtin_types=d.asm.K).apply(null,arguments)};
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+d.dynCall_viiiii=function(){return(d.dynCall_viiiii=d.asm.X).apply(null,arguments)};d.dynCall_viiiiiiii=function(){return(d.dynCall_viiiiiiii=d.asm.Y).apply(null,arguments)};d.dynCall_viiiiiiiiiii=function(){return(d.dynCall_viiiiiiiiiii=d.asm.Z).apply(null,arguments)};d.dynCall_viiiiiiiiiiii=function(){return(d.dynCall_viiiiiiiiiiii=d.asm._).apply(null,arguments)};d.dynCall_viii=function(){return(d.dynCall_viii=d.asm.$).apply(null,arguments)};
+d.dynCall_viiiiiii=function(){return(d.dynCall_viiiiiii=d.asm.aa).apply(null,arguments)};d.dynCall_iiiiiii=function(){return(d.dynCall_iiiiiii=d.asm.ba).apply(null,arguments)};d.dynCall_iidiiii=function(){return(d.dynCall_iidiiii=d.asm.ca).apply(null,arguments)};d.dynCall_i=function(){return(d.dynCall_i=d.asm.da).apply(null,arguments)};d.dynCall_viiiiiiiiii=function(){return(d.dynCall_viiiiiiiiii=d.asm.ea).apply(null,arguments)};
+d.dynCall_jiji=function(){return(d.dynCall_jiji=d.asm.fa).apply(null,arguments)};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())}}
+d.run=Mb;if(d.preInit)for("function"==typeof d.preInit&&(d.preInit=[d.preInit]);0<d.preInit.length;)d.preInit.pop()();noExitRuntime=!0;Mb();
+
+
+  return avif_dec.ready
+}
+);
+})();
+if (typeof exports === 'object' && typeof module === 'object')
+      module.exports = avif_dec;
+    else if (typeof define === 'function' && define['amd'])
+      define([], function() { return avif_dec; });
+    else if (typeof exports === 'object')
+      exports["avif_dec"] = avif_dec;
+    

codecs/avif/enc/README.md

@@ -0,0 +1,37 @@
+# AVIF encoder
+
+- Source: <https://github.com/AOMediaCodec/libavif>
+- Version: v0.5.4
+
+## Example
+
+Run example.js
+
+## API
+
+### `Uint8Array encode(std::string image_in, int image_width, int image_height, AvifOptions opts)`
+
+Encodes the given image with given dimension to AVIF. Options looks like this:
+
+```c++
+struct AvifOptions {
+  // 0 = lossless
+  // 63 = worst quality
+  int minQuantizer;
+  int maxQuantizer;
+
+  // [0 - 6]
+  // Creates 2^n tiles in that dimension
+  int tileRowsLog2;
+  int tileColsLog2;
+
+  // 0 = slowest
+  // 10 = fastest
+  int speed;
+
+  // 0 = 4:2:0
+  // 1 = 4:2:2
+  // 2 = 4:4:4
+  int subsample;
+};
+```

codecs/avif/enc/avif_enc.cpp

@@ -0,0 +1,106 @@
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+#include "avif/avif.h"
+
+using namespace emscripten;
+
+struct AvifOptions {
+  // [0 - 63]
+  // 0 = lossless
+  // 63 = worst quality
+  int minQuantizer;
+  int maxQuantizer;
+  int minQuantizerAlpha;
+  int maxQuantizerAlpha;
+  // [0 - 6]
+  // Creates 2^n tiles in that dimension
+  int tileRowsLog2;
+  int tileColsLog2;
+  // [0 - 10]
+  // 0 = slowest
+  // 10 = fastest
+  int speed;
+  // 0 = 4:0:0
+  // 1 = 4:2:0
+  // 2 = 4:2:2
+  // 3 = 4:4:4
+  int subsample;
+};
+
+thread_local const val Uint8Array = val::global("Uint8Array");
+
+val encode(std::string buffer, int width, int height, AvifOptions options) {
+  avifRWData output = AVIF_DATA_EMPTY;
+  int depth = 8;
+  avifPixelFormat format;
+  switch (options.subsample) {
+    case 0:
+      format = AVIF_PIXEL_FORMAT_YUV400;
+      break;
+    case 1:
+      format = AVIF_PIXEL_FORMAT_YUV420;
+      break;
+    case 2:
+      format = AVIF_PIXEL_FORMAT_YUV422;
+      break;
+    case 3:
+      format = AVIF_PIXEL_FORMAT_YUV444;
+      break;
+  }
+
+  avifImage* image = avifImageCreate(width, height, depth, format);
+
+  if (
+    options.maxQuantizer == AVIF_QUANTIZER_LOSSLESS &&
+    options.minQuantizer == AVIF_QUANTIZER_LOSSLESS &&
+    options.minQuantizerAlpha == AVIF_QUANTIZER_LOSSLESS &&
+    options.maxQuantizerAlpha == AVIF_QUANTIZER_LOSSLESS &&
+    format == AVIF_PIXEL_FORMAT_YUV444
+  ) {
+    image->matrixCoefficients = AVIF_MATRIX_COEFFICIENTS_IDENTITY;
+  } else {
+    image->matrixCoefficients = AVIF_MATRIX_COEFFICIENTS_BT709;
+  }
+
+  uint8_t* rgba = (uint8_t*)buffer.c_str();
+
+  avifRGBImage srcRGB;
+  avifRGBImageSetDefaults(&srcRGB, image);
+  srcRGB.pixels = rgba;
+  srcRGB.rowBytes = width * 4;
+  avifImageRGBToYUV(image, &srcRGB);
+
+  avifEncoder* encoder = avifEncoderCreate();
+  encoder->maxThreads = 1;
+  encoder->minQuantizer = options.minQuantizer;
+  encoder->maxQuantizer = options.maxQuantizer;
+  encoder->minQuantizerAlpha = options.minQuantizerAlpha;
+  encoder->maxQuantizerAlpha = options.maxQuantizerAlpha;
+  encoder->tileRowsLog2 = options.tileRowsLog2;
+  encoder->tileColsLog2 = options.tileColsLog2;
+  encoder->speed = options.speed;
+  avifResult encodeResult = avifEncoderWrite(encoder, image, &output);
+  auto js_result = val::null();
+  if (encodeResult == AVIF_RESULT_OK) {
+    js_result = Uint8Array.new_(typed_memory_view(output.size, output.data));
+  }
+
+  avifImageDestroy(image);
+  avifEncoderDestroy(encoder);
+  avifRWDataFree(&output);
+  return js_result;
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  value_object<AvifOptions>("AvifOptions")
+      .field("minQuantizer", &AvifOptions::minQuantizer)
+      .field("maxQuantizer", &AvifOptions::maxQuantizer)
+      .field("minQuantizerAlpha", &AvifOptions::minQuantizerAlpha)
+      .field("maxQuantizerAlpha", &AvifOptions::maxQuantizerAlpha)
+      .field("tileRowsLog2", &AvifOptions::tileRowsLog2)
+      .field("tileColsLog2", &AvifOptions::tileColsLog2)
+      .field("speed", &AvifOptions::speed)
+      .field("subsample", &AvifOptions::subsample);
+
+  function("encode", &encode);
+}

codecs/avif/enc/avif_enc.d.ts

@@ -0,0 +1,7 @@
+import { EncodeOptions } from '../../../src/codecs/avif/encoder-meta';
+
+interface AVIFModule extends EmscriptenWasm.Module {
+  encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array | null;
+}
+
+export default function(opts: EmscriptenWasm.ModuleOpts): AVIFModule;

codecs/avif/enc/avif_enc.js

@@ -0,0 +1,113 @@
+
+var avif_enc = (function() {
+  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
+  if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
+  return (
+function(avif_enc) {
+  avif_enc = avif_enc || {};
+
+
+var f;f||(f=typeof avif_enc !== 'undefined' ? avif_enc : {});var aa,ba;f.ready=new Promise(function(a,b){aa=a;ba=b});var ca={},m;for(m in f)f.hasOwnProperty(m)&&(ca[m]=f[m]);var da=!1,r=!1,ea=!1,fa=!1;da="object"===typeof window;r="function"===typeof importScripts;ea="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;fa=!da&&!ea&&!r;var u="",ha,ia,ja,ka;
+if(ea)u=r?require("path").dirname(u)+"/":__dirname+"/",ha=function(a,b){ja||(ja=require("fs"));ka||(ka=require("path"));a=ka.normalize(a);return ja.readFileSync(a,b?null:"utf8")},ia=function(a){a=ha(a,!0);a.buffer||(a=new Uint8Array(a));assert(a.buffer);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",x),f.inspect=function(){return"[Emscripten Module object]"};else if(fa)"undefined"!=
+typeof read&&(ha=function(a){return read(a)}),ia=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");assert("object"===typeof a);return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(da||r)r?u=self.location.href:document.currentScript&&(u=document.currentScript.src),_scriptDir&&(u=_scriptDir),0!==u.indexOf("blob:")?u=u.substr(0,
+u.lastIndexOf("/")+1):u="",ha=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.send(null);return b.responseText},r&&(ia=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.responseType="arraybuffer";b.send(null);return new Uint8Array(b.response)});var la=f.print||console.log.bind(console),z=f.printErr||console.warn.bind(console);for(m in ca)ca.hasOwnProperty(m)&&(f[m]=ca[m]);ca=null;var ma=0,na;f.wasmBinary&&(na=f.wasmBinary);var noExitRuntime;f.noExitRuntime&&(noExitRuntime=f.noExitRuntime);
+"object"!==typeof WebAssembly&&x("no native wasm support detected");var A,oa=new WebAssembly.Table({initial:901,maximum:901,element:"anyfunc"}),pa=!1;function assert(a,b){a||x("Assertion failed: "+b)}var qa="undefined"!==typeof TextDecoder?new TextDecoder("utf8"):void 0;
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+
+
+  return avif_enc.ready
+}
+);
+})();
+if (typeof exports === 'object' && typeof module === 'object')
+      module.exports = avif_enc;
+    else if (typeof define === 'function' && define['amd'])
+      define([], function() { return avif_enc; });
+    else if (typeof exports === 'object')
+      exports["avif_enc"] = avif_enc;
+    

codecs/avif/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "avif",
+  "scripts": {
+    "build": "../build-cpp.sh"
+  }
+}

codecs/cpp.Dockerfile

@@ -1,4 +1,4 @@
-FROM emscripten/emsdk:1.39.19
+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"

codecs/webp/dec/webp_dec.cpp

@@ -17,7 +17,7 @@ val decode(std::string buffer) {
   int width, height;
   std::unique_ptr<uint8_t[]> rgba(
       WebPDecodeRGBA((const uint8_t*)buffer.c_str(), buffer.size(), &width, &height));
-  return ImageData.new_(Uint8ClampedArray.new_(typed_memory_view(width * height * 4, rgba.get())), width, height);
+  return rgba ? ImageData.new_(Uint8ClampedArray.new_(typed_memory_view(width * height * 4, rgba.get())), width, height) : val::null();
 }
 
 EMSCRIPTEN_BINDINGS(my_module) {

codecs/webp/dec/webp_dec.d.ts

@@ -1,5 +1,5 @@
 interface WebPModule extends EmscriptenWasm.Module {
-  decode(data: BufferSource): ImageData;
+  decode(data: BufferSource): ImageData | null;
 }
 
 export default function(opts: EmscriptenWasm.ModuleOpts): WebPModule;

codecs/webp/dec/webp_dec.js

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-function Sa(a){4<a&&0===--Y[a].M&&(Y[a]=void 0,Ra.push(a))}function Va(a){switch(a){case void 0:return 1;case null:return 2;case !0:return 3;case !1:return 4;default:var b=Ra.length?Ra.pop():Y.length;Y[b]={M:1,value:a};return b}}function Wa(a){return this.fromWireType(L[a>>2])}function Xa(a){if(null===a)return"null";var b=typeof a;return"object"===b||"array"===b||"function"===b?a.toString():""+a}
+function Sa(a){4<a&&0===--Y[a].M&&(Y[a]=void 0,Ra.push(a))}function Ta(a){switch(a){case void 0:return 1;case null:return 2;case !0:return 3;case !1:return 4;default:var b=Ra.length?Ra.pop():Y.length;Y[b]={M:1,value:a};return b}}function Wa(a){return this.fromWireType(L[a>>2])}function Xa(a){if(null===a)return"null";var b=typeof a;return"object"===b||"array"===b||"function"===b?a.toString():""+a}
 function Ya(a,b){switch(b){case 2:return function(c){return this.fromWireType(ta[c>>2])};case 3:return function(c){return this.fromWireType(ua[c>>3])};default:throw new TypeError("Unknown float type: "+a);}}function Za(a){var b=Function;if(!(b instanceof Function))throw new TypeError("new_ called with constructor type "+typeof b+" which is not a function");var c=Ma(b.name||"unknownFunctionName",function(){});c.prototype=b.prototype;c=new c;a=b.apply(c,a);return a instanceof Object?a:c}
 function $a(a){for(;a.length;){var b=a.pop();a.pop()(b)}}function ab(a,b){var c=d;if(void 0===c[a].J){var e=c[a];c[a]=function(){c[a].J.hasOwnProperty(arguments.length)||W("Function '"+b+"' called with an invalid number of arguments ("+arguments.length+") - expects one of ("+c[a].J+")!");return c[a].J[arguments.length].apply(this,arguments)};c[a].J=[];c[a].J[e.O]=e}}
 function bb(a,b,c){d.hasOwnProperty(a)?((void 0===c||void 0!==d[a].J&&void 0!==d[a].J[c])&&W("Cannot register public name '"+a+"' twice"),ab(a,a),d.hasOwnProperty(c)&&W("Cannot register multiple overloads of a function with the same number of arguments ("+c+")!"),d[a].J[c]=b):(d[a]=b,void 0!==c&&(d[a].T=c))}function cb(a,b){for(var c=[],e=0;e<a;e++)c.push(I[(b>>2)+e]);return c}
@@ -32,18 +32,18 @@ function hb(a,b){function c(g){f[g]||U[g]||(V[g]?V[g].forEach(c):(e.push(g),f[g]
 function kb(){return"object"===typeof globalThis?globalThis:Function("return this")()}function lb(a,b){var c=U[a];void 0===c&&W(b+" has unknown type "+fb(a));return c}for(var mb={},nb=Array(256),ob=0;256>ob;++ob)nb[ob]=String.fromCharCode(ob);Ka=nb;Oa=d.BindingError=Na("BindingError");Pa=d.InternalError=Na("InternalError");d.count_emval_handles=function(){for(var a=0,b=5;b<Y.length;++b)void 0!==Y[b]&&++a;return a};
 d.get_first_emval=function(){for(var a=5;a<Y.length;++a)if(void 0!==Y[a])return Y[a];return null};eb=d.UnboundTypeError=Na("UnboundTypeError");
 var qb={m:function(a){return pb(a)},i:function(){},l:function(a){"uncaught_exception"in R?R.N++:R.N=1;throw a;},j:function(a,b,c,e,f){var g=Ja(c);b=S(b);X(a,{name:b,fromWireType:function(n){return!!n},toWireType:function(n,k){return k?e:f},argPackAdvance:8,readValueFromPointer:function(n){if(1===c)var k=sa;else if(2===c)k=H;else if(4===c)k=I;else throw new TypeError("Unknown boolean type size: "+b);return this.fromWireType(k[n>>g])},K:null})},r:function(a,b){b=S(b);X(a,{name:b,fromWireType:function(c){var e=
-Y[c].value;Sa(c);return e},toWireType:function(c,e){return Va(e)},argPackAdvance:8,readValueFromPointer:Wa,K:null})},g:function(a,b,c){c=Ja(c);b=S(b);X(a,{name:b,fromWireType:function(e){return e},toWireType:function(e,f){if("number"!==typeof f&&"boolean"!==typeof f)throw new TypeError('Cannot convert "'+Xa(f)+'" to '+this.name);return f},argPackAdvance:8,readValueFromPointer:Ya(b,c),K:null})},e:function(a,b,c,e,f,g){var n=cb(b,c);a=S(a);f=db(e,f);bb(a,function(){hb("Cannot call "+a+" due to unbound types",
-n)},b-1);Qa(n,function(k){var h=[k[0],null].concat(k.slice(1)),p=k=a,q=f,m=h.length;2>m&&W("argTypes array size mismatch! Must at least get return value and 'this' types!");for(var r=null!==h[1]&&!1,y=!1,l=1;l<h.length;++l)if(null!==h[l]&&void 0===h[l].K){y=!0;break}var Ta="void"!==h[0].name,K="",O="";for(l=0;l<m-2;++l)K+=(0!==l?", ":"")+"arg"+l,O+=(0!==l?", ":"")+"arg"+l+"Wired";p="return function "+La(p)+"("+K+") {\nif (arguments.length !== "+(m-2)+") {\nthrowBindingError('function "+p+" called with ' + arguments.length + ' arguments, expected "+
-(m-2)+" args!');\n}\n";y&&(p+="var destructors = [];\n");var Ua=y?"destructors":"null";K="throwBindingError invoker fn runDestructors retType classParam".split(" ");q=[W,q,g,$a,h[0],h[1]];r&&(p+="var thisWired = classParam.toWireType("+Ua+", this);\n");for(l=0;l<m-2;++l)p+="var arg"+l+"Wired = argType"+l+".toWireType("+Ua+", arg"+l+"); // "+h[l+2].name+"\n",K.push("argType"+l),q.push(h[l+2]);r&&(O="thisWired"+(0<O.length?", ":"")+O);p+=(Ta?"var rv = ":"")+"invoker(fn"+(0<O.length?", ":"")+O+");\n";
-if(y)p+="runDestructors(destructors);\n";else for(l=r?1:2;l<h.length;++l)m=1===l?"thisWired":"arg"+(l-2)+"Wired",null!==h[l].K&&(p+=m+"_dtor("+m+"); // "+h[l].name+"\n",K.push(m+"_dtor"),q.push(h[l].K));Ta&&(p+="var ret = retType.fromWireType(rv);\nreturn ret;\n");K.push(p+"}\n");h=Za(K).apply(null,q);l=b-1;if(!d.hasOwnProperty(k))throw new Pa("Replacing nonexistant public symbol");void 0!==d[k].J&&void 0!==l?d[k].J[l]=h:(d[k]=h,d[k].O=l);return[]})},b:function(a,b,c,e,f){function g(p){return p}b=
+Y[c].value;Sa(c);return e},toWireType:function(c,e){return Ta(e)},argPackAdvance:8,readValueFromPointer:Wa,K:null})},g:function(a,b,c){c=Ja(c);b=S(b);X(a,{name:b,fromWireType:function(e){return e},toWireType:function(e,f){if("number"!==typeof f&&"boolean"!==typeof f)throw new TypeError('Cannot convert "'+Xa(f)+'" to '+this.name);return f},argPackAdvance:8,readValueFromPointer:Ya(b,c),K:null})},e:function(a,b,c,e,f,g){var n=cb(b,c);a=S(a);f=db(e,f);bb(a,function(){hb("Cannot call "+a+" due to unbound types",
+n)},b-1);Qa(n,function(k){var h=[k[0],null].concat(k.slice(1)),p=k=a,q=f,m=h.length;2>m&&W("argTypes array size mismatch! Must at least get return value and 'this' types!");for(var r=null!==h[1]&&!1,y=!1,l=1;l<h.length;++l)if(null!==h[l]&&void 0===h[l].K){y=!0;break}var Ua="void"!==h[0].name,K="",O="";for(l=0;l<m-2;++l)K+=(0!==l?", ":"")+"arg"+l,O+=(0!==l?", ":"")+"arg"+l+"Wired";p="return function "+La(p)+"("+K+") {\nif (arguments.length !== "+(m-2)+") {\nthrowBindingError('function "+p+" called with ' + arguments.length + ' arguments, expected "+
+(m-2)+" args!');\n}\n";y&&(p+="var destructors = [];\n");var Va=y?"destructors":"null";K="throwBindingError invoker fn runDestructors retType classParam".split(" ");q=[W,q,g,$a,h[0],h[1]];r&&(p+="var thisWired = classParam.toWireType("+Va+", this);\n");for(l=0;l<m-2;++l)p+="var arg"+l+"Wired = argType"+l+".toWireType("+Va+", arg"+l+"); // "+h[l+2].name+"\n",K.push("argType"+l),q.push(h[l+2]);r&&(O="thisWired"+(0<O.length?", ":"")+O);p+=(Ua?"var rv = ":"")+"invoker(fn"+(0<O.length?", ":"")+O+");\n";
+if(y)p+="runDestructors(destructors);\n";else for(l=r?1:2;l<h.length;++l)m=1===l?"thisWired":"arg"+(l-2)+"Wired",null!==h[l].K&&(p+=m+"_dtor("+m+"); // "+h[l].name+"\n",K.push(m+"_dtor"),q.push(h[l].K));Ua&&(p+="var ret = retType.fromWireType(rv);\nreturn ret;\n");K.push(p+"}\n");h=Za(K).apply(null,q);l=b-1;if(!d.hasOwnProperty(k))throw new Pa("Replacing nonexistant public symbol");void 0!==d[k].J&&void 0!==l?d[k].J[l]=h:(d[k]=h,d[k].O=l);return[]})},b:function(a,b,c,e,f){function g(p){return p}b=
 S(b);-1===f&&(f=4294967295);var n=Ja(c);if(0===e){var k=32-8*c;g=function(p){return p<<k>>>k}}var h=-1!=b.indexOf("unsigned");X(a,{name:b,fromWireType:g,toWireType:function(p,q){if("number"!==typeof q&&"boolean"!==typeof q)throw new TypeError('Cannot convert "'+Xa(q)+'" to '+this.name);if(q<e||q>f)throw new TypeError('Passing a number "'+Xa(q)+'" from JS side to C/C++ side to an argument of type "'+b+'", which is outside the valid range ['+e+", "+f+"]!");return h?q>>>0:q|0},argPackAdvance:8,readValueFromPointer:ib(b,
-n,0!==e),K:null})},a:function(a,b,c){function e(g){g>>=2;var n=L;return new f(J,n[g+1],n[g])}var f=[Int8Array,Uint8Array,Int16Array,Uint16Array,Int32Array,Uint32Array,Float32Array,Float64Array][b];c=S(c);X(a,{name:c,fromWireType:e,argPackAdvance:8,readValueFromPointer:e},{R:!0})},h:function(a,b){b=S(b);var c="std::string"===b;X(a,{name:b,fromWireType:function(e){var f=L[e>>2];if(c)for(var g=e+4,n=0;n<=f;++n){var k=e+4+n;if(0==F[k]||n==f){if(g){var h=g;var p=F,q=h+(k-g);for(g=h;p[g]&&!(g>=q);)++g;
+n,0!==e),K:null})},a:function(a,b,c){function e(g){g>>=2;var n=L;return new f(J,n[g+1],n[g])}var f=[Int8Array,Uint8Array,Int16Array,Uint16Array,Int32Array,Uint32Array,Float32Array,Float64Array][b];c=S(c);X(a,{name:c,fromWireType:e,argPackAdvance:8,readValueFromPointer:e},{R:!0})},h:function(a,b){b=S(b);var c="std::string"===b;X(a,{name:b,fromWireType:function(e){var f=L[e>>2];if(c)for(var g=e+4,n=0;n<=f;++n){var k=e+4+n;if(n==f||0==F[k]){if(g){var h=g;var p=F,q=h+(k-g);for(g=h;p[g]&&!(g>=q);)++g;
 if(16<g-h&&p.subarray&&ja)h=ja.decode(p.subarray(h,g));else{for(q="";h<g;){var m=p[h++];if(m&128){var r=p[h++]&63;if(192==(m&224))q+=String.fromCharCode((m&31)<<6|r);else{var y=p[h++]&63;m=224==(m&240)?(m&15)<<12|r<<6|y:(m&7)<<18|r<<12|y<<6|p[h++]&63;65536>m?q+=String.fromCharCode(m):(m-=65536,q+=String.fromCharCode(55296|m>>10,56320|m&1023))}}else q+=String.fromCharCode(m)}h=q}}else h="";if(void 0===l)var l=h;else l+=String.fromCharCode(0),l+=h;g=k+1}}else{l=Array(f);for(n=0;n<f;++n)l[n]=String.fromCharCode(F[e+
 4+n]);l=l.join("")}Z(e);return l},toWireType:function(e,f){f instanceof ArrayBuffer&&(f=new Uint8Array(f));var g="string"===typeof f;g||f instanceof Uint8Array||f instanceof Uint8ClampedArray||f instanceof Int8Array||W("Cannot pass non-string to std::string");var n=(c&&g?function(){for(var p=0,q=0;q<f.length;++q){var m=f.charCodeAt(q);55296<=m&&57343>=m&&(m=65536+((m&1023)<<10)|f.charCodeAt(++q)&1023);127>=m?++p:p=2047>=m?p+2:65535>=m?p+3:p+4}return p}:function(){return f.length})(),k=pb(4+n+1);L[k>>
 2]=n;if(c&&g)ka(f,k+4,n+1);else if(g)for(g=0;g<n;++g){var h=f.charCodeAt(g);255<h&&(Z(k),W("String has UTF-16 code units that do not fit in 8 bits"));F[k+4+g]=h}else for(g=0;g<n;++g)F[k+4+g]=f[g];null!==e&&e.push(Z,k);return k},argPackAdvance:8,readValueFromPointer:Wa,K:function(e){Z(e)}})},d:function(a,b,c){c=S(c);if(2===b){var e=ma;var f=na;var g=oa;var n=function(){return G};var k=1}else 4===b&&(e=pa,f=qa,g=ra,n=function(){return L},k=2);X(a,{name:c,fromWireType:function(h){for(var p=L[h>>2],q=
-n(),m,r=h+4,y=0;y<=p;++y){var l=h+4+y*b;if(0==q[l>>k]||y==p)r=e(r,l-r),void 0===m?m=r:(m+=String.fromCharCode(0),m+=r),r=l+b}Z(h);return m},toWireType:function(h,p){"string"!==typeof p&&W("Cannot pass non-string to C++ string type "+c);var q=g(p),m=pb(4+q+b);L[m>>2]=q>>k;f(p,m+4,q+b);null!==h&&h.push(Z,m);return m},argPackAdvance:8,readValueFromPointer:Wa,K:function(h){Z(h)}})},k:function(a,b){b=S(b);X(a,{S:!0,name:b,argPackAdvance:0,fromWireType:function(){},toWireType:function(){}})},o:Sa,s:function(a){if(0===
-a)return Va(kb());var b=jb[a];a=void 0===b?S(a):b;return Va(kb()[a])},n:function(a){4<a&&(Y[a].M+=1)},f:function(a,b,c,e){a||W("Cannot use deleted val. handle = "+a);a=Y[a].value;var f=mb[b];if(!f){f="";for(var g=0;g<b;++g)f+=(0!==g?", ":"")+"arg"+g;var n="return function emval_allocator_"+b+"(constructor, argTypes, args) {\n";for(g=0;g<b;++g)n+="var argType"+g+" = requireRegisteredType(Module['HEAP32'][(argTypes >>> 2) + "+g+'], "parameter '+g+'");\nvar arg'+g+" = argType"+g+".readValueFromPointer(args);\nargs += argType"+
-g+"['argPackAdvance'];\n";f=(new Function("requireRegisteredType","Module","__emval_register",n+("var obj = new constructor("+f+");\nreturn __emval_register(obj);\n}\n")))(lb,d,Va);mb[b]=f}return f(a,c,e)},q:function(){B()},p:function(a,b,c){F.copyWithin(a,b,b+c)},c:function(a){a>>>=0;var b=F.length;if(2147483648<a)return!1;for(var c=1;4>=c;c*=2){var e=b*(1+.2/c);e=Math.min(e,a+100663296);e=Math.max(16777216,a,e);0<e%65536&&(e+=65536-e%65536);a:{try{E.grow(Math.min(2147483648,e)-J.byteLength+65535>>>
+n(),m,r=h+4,y=0;y<=p;++y){var l=h+4+y*b;if(y==p||0==q[l>>k])r=e(r,l-r),void 0===m?m=r:(m+=String.fromCharCode(0),m+=r),r=l+b}Z(h);return m},toWireType:function(h,p){"string"!==typeof p&&W("Cannot pass non-string to C++ string type "+c);var q=g(p),m=pb(4+q+b);L[m>>2]=q>>k;f(p,m+4,q+b);null!==h&&h.push(Z,m);return m},argPackAdvance:8,readValueFromPointer:Wa,K:function(h){Z(h)}})},k:function(a,b){b=S(b);X(a,{S:!0,name:b,argPackAdvance:0,fromWireType:function(){},toWireType:function(){}})},o:Sa,s:function(a){if(0===
+a)return Ta(kb());var b=jb[a];a=void 0===b?S(a):b;return Ta(kb()[a])},n:function(a){4<a&&(Y[a].M+=1)},f:function(a,b,c,e){a||W("Cannot use deleted val. handle = "+a);a=Y[a].value;var f=mb[b];if(!f){f="";for(var g=0;g<b;++g)f+=(0!==g?", ":"")+"arg"+g;var n="return function emval_allocator_"+b+"(constructor, argTypes, args) {\n";for(g=0;g<b;++g)n+="var argType"+g+" = requireRegisteredType(Module['HEAP32'][(argTypes >>> 2) + "+g+'], "parameter '+g+'");\nvar arg'+g+" = argType"+g+".readValueFromPointer(args);\nargs += argType"+
+g+"['argPackAdvance'];\n";f=(new Function("requireRegisteredType","Module","__emval_register",n+("var obj = new constructor("+f+");\nreturn __emval_register(obj);\n}\n")))(lb,d,Ta);mb[b]=f}return f(a,c,e)},q:function(){B()},p:function(a,b,c){F.copyWithin(a,b,b+c)},c:function(a){a>>>=0;var b=F.length;if(2147483648<a)return!1;for(var c=1;4>=c;c*=2){var e=b*(1+.2/c);e=Math.min(e,a+100663296);e=Math.max(16777216,a,e);0<e%65536&&(e+=65536-e%65536);a:{try{E.grow(Math.min(2147483648,e)-J.byteLength+65535>>>
 16);va(E.buffer);var f=1;break a}catch(g){}f=void 0}if(f)return!0}return!1},memory:E,table:ha};
 (function(){function a(f){d.asm=f.exports;N--;d.monitorRunDependencies&&d.monitorRunDependencies(N);0==N&&(null!==Ca&&(clearInterval(Ca),Ca=null),P&&(f=P,P=null,f()))}function b(f){a(f.instance)}function c(f){return Ha().then(function(g){return WebAssembly.instantiate(g,e)}).then(f,function(g){C("failed to asynchronously prepare wasm: "+g);B(g)})}var e={a:qb};N++;d.monitorRunDependencies&&d.monitorRunDependencies(N);if(d.instantiateWasm)try{return d.instantiateWasm(e,a)}catch(f){return C("Module.instantiateWasm callback failed with error: "+
 f),!1}(function(){if(D||"function"!==typeof WebAssembly.instantiateStreaming||Ea()||Da("file://")||"function"!==typeof fetch)return c(b);fetch(Q,{credentials:"same-origin"}).then(function(f){return WebAssembly.instantiateStreaming(f,e).then(b,function(g){C("wasm streaming compile failed: "+g);C("falling back to ArrayBuffer instantiation");return c(b)})})})();return{}})();

codecs/webp/enc/webp_enc.cpp

@@ -14,7 +14,7 @@ int version() {
 thread_local const val Uint8Array = val::global("Uint8Array");
 
 val encode(std::string img, int width, int height, WebPConfig config) {
-  uint8_t* img_in = (uint8_t*)img.c_str();
+  auto img_in = (uint8_t*)img.c_str();
 
   // A lot of this is duplicated from Encode in picture_enc.c
   WebPPicture pic;
@@ -23,7 +23,7 @@ val encode(std::string img, int width, int height, WebPConfig config) {
 
   if (!WebPPictureInit(&pic)) {
     // shouldn't happen, except if system installation is broken
-    throw std::runtime_error("Unexpected error");
+    return val::null();
   }
 
   // Only use use_argb if we really need it, as it's slower.
@@ -35,15 +35,10 @@ val encode(std::string img, int width, int height, WebPConfig config) {
 
   WebPMemoryWriterInit(&wrt);
 
-  ok = WebPPictureImportRGBA(&pic, (uint8_t*)img_in, width * 4) && WebPEncode(&config, &pic);
+  ok = WebPPictureImportRGBA(&pic, img_in, width * 4) && WebPEncode(&config, &pic);
   WebPPictureFree(&pic);
-  if (!ok) {
-    WebPMemoryWriterClear(&wrt);
-    throw std::runtime_error("Encode failed");
-  }
-
-  val js_result = Uint8Array.new_(typed_memory_view(wrt.size, wrt.mem));
-  WebPFree(wrt.mem);
+  val js_result = ok ? Uint8Array.new_(typed_memory_view(wrt.size, wrt.mem)) : val::null();
+  WebPMemoryWriterClear(&wrt);
   return js_result;
 }
 

codecs/webp/enc/webp_enc.d.ts

@@ -1,7 +1,7 @@
 import { EncodeOptions } from '../../../src/codecs/webp/encoder-meta';
 
 interface WebPModule extends EmscriptenWasm.Module {
-  encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array;
+  encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array | null;
 }
 
 export default function(opts: EmscriptenWasm.ModuleOpts): WebPModule;

codecs/webp/enc/webp_enc.js

@@ -7,17 +7,17 @@ function(webp_enc) {
   webp_enc = webp_enc || {};
 
 
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+e,f,g){La[a]={name:U(b),ea:Z(c,e),fa:Z(f,g),W:[]}},d:function(a,b,c,e,f,g,l,k,h,m){La[a].W.push({Y:U(b),ba:c,$:Z(e,f),aa:g,ha:l,ga:Z(k,h),ia:m})},s:function(a,b){b=U(b);T(a,{ja:!0,name:b,argPackAdvance:0,fromWireType:function(){},toWireType:function(){}})},p:Ya,w:function(a){if(0===a)return Za(nb());var b=mb[a];a=void 0===b?U(a):b;return Za(nb()[a])},v:function(a){4<a&&(X[a].U+=1)},m:function(a,b,c,e){a||V("Cannot use deleted val. handle = "+a);a=X[a].value;var f=ob[b];if(!f){f="";for(var g=0;g<b;++g)f+=
 (0!==g?", ":"")+"arg"+g;var l="return function emval_allocator_"+b+"(constructor, argTypes, args) {\n";for(g=0;g<b;++g)l+="var argType"+g+" = requireRegisteredType(Module['HEAP32'][(argTypes >>> 2) + "+g+'], "parameter '+g+'");\nvar arg'+g+" = argType"+g+".readValueFromPointer(args);\nargs += argType"+g+"['argPackAdvance'];\n";f=(new Function("requireRegisteredType","Module","__emval_register",l+("var obj = new constructor("+f+");\nreturn __emval_register(obj);\n}\n")))(eb,d,Za);ob[b]=f}return f(a,
-c,e)},s:function(){C()},r:function(a,b,c){H.copyWithin(a,b,b+c)},c:function(a){a>>>=0;var b=H.length;if(2147483648<a)return!1;for(var c=1;4>=c;c*=2){var e=b*(1+.2/c);e=Math.min(e,a+100663296);e=Math.max(16777216,a,e);0<e%65536&&(e+=65536-e%65536);a:{try{G.grow(Math.min(2147483648,e)-L.byteLength+65535>>>16);va(G.buffer);var f=1;break a}catch(g){}f=void 0}if(f)return!0}return!1},memory:G,table:ha};
+c,e)},o:function(){C()},n:function(a,b,c){H.copyWithin(a,b,b+c)},c:function(a){a>>>=0;var b=H.length;if(2147483648<a)return!1;for(var c=1;4>=c;c*=2){var e=b*(1+.2/c);e=Math.min(e,a+100663296);e=Math.max(16777216,a,e);0<e%65536&&(e+=65536-e%65536);a:{try{G.grow(Math.min(2147483648,e)-L.byteLength+65535>>>16);va(G.buffer);var f=1;break a}catch(g){}f=void 0}if(f)return!0}return!1},memory:G,table:ha};
 (function(){function a(f){d.asm=f.exports;O--;d.monitorRunDependencies&&d.monitorRunDependencies(O);0==O&&(null!==Da&&(clearInterval(Da),Da=null),P&&(f=P,P=null,f()))}function b(f){a(f.instance)}function c(f){return Ia().then(function(g){return WebAssembly.instantiate(g,e)}).then(f,function(g){D("failed to asynchronously prepare wasm: "+g);C(g)})}var e={a:sb};O++;d.monitorRunDependencies&&d.monitorRunDependencies(O);if(d.instantiateWasm)try{return d.instantiateWasm(e,a)}catch(f){return D("Module.instantiateWasm callback failed with error: "+
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 var Ja=d.___wasm_call_ctors=function(){return(Ja=d.___wasm_call_ctors=d.asm.y).apply(null,arguments)},rb=d._malloc=function(){return(rb=d._malloc=d.asm.z).apply(null,arguments)},Y=d._free=function(){return(Y=d._free=d.asm.A).apply(null,arguments)},db=d.___getTypeName=function(){return(db=d.___getTypeName=d.asm.B).apply(null,arguments)};d.___embind_register_native_and_builtin_types=function(){return(d.___embind_register_native_and_builtin_types=d.asm.C).apply(null,arguments)};

package-lock.json

@@ -7451,7 +7451,7 @@
     },
     "is-obj": {
       "version": "1.0.1",
-      "resolved": "http://registry.npmjs.org/is-obj/-/is-obj-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/is-obj/-/is-obj-1.0.1.tgz",
       "integrity": "sha1-PkcprB9f3gJc19g6iW2rn09n2w8=",
       "dev": true
     },

src/codecs/avif/decoder-meta.ts

@@ -0,0 +1,7 @@
+export const name = 'WASM AVIF Decoder';
+
+const supportedMimeTypes = ['image/avif'];
+
+export function canHandleMimeType(mimeType: string): boolean {
+  return supportedMimeTypes.includes(mimeType);
+}

src/codecs/avif/decoder.ts

@@ -0,0 +1,16 @@
+import avif_dec, { AVIFModule } from '../../../codecs/avif/dec/avif_dec';
+import wasmUrl from '../../../codecs/avif/dec/avif_dec.wasm';
+import { initEmscriptenModule } from '../util';
+
+let emscriptenModule: Promise<AVIFModule>;
+
+export async function decode(data: ArrayBuffer): Promise<ImageData> {
+  if (!emscriptenModule) emscriptenModule = initEmscriptenModule(avif_dec, wasmUrl);
+
+  const module = await emscriptenModule;
+  const result = module.decode(data);
+  if (!result) {
+    throw new Error('Decoding error');
+  }
+  return result;
+}

src/codecs/avif/encoder-meta.ts

@@ -0,0 +1,27 @@
+export interface EncodeOptions {
+  minQuantizer: number;
+  maxQuantizer: number;
+  minQuantizerAlpha: number;
+  maxQuantizerAlpha: number;
+  tileRowsLog2: number;
+  tileColsLog2: number;
+  speed: number;
+  subsample: number;
+}
+
+export const type = 'avif';
+export const label = 'AVIF';
+export const mimeType = 'image/avif';
+export const extension = 'avif';
+export const defaultOptions: EncodeOptions = {
+  minQuantizer: 33,
+  maxQuantizer: 63,
+  minQuantizerAlpha: 33,
+  maxQuantizerAlpha: 63,
+  tileColsLog2: 0,
+  tileRowsLog2: 0,
+  speed: 8,
+  subsample: 1,
+};
+
+export interface EncoderState { type: typeof type; options: EncodeOptions; }

src/codecs/avif/encoder.ts

@@ -0,0 +1,20 @@
+import avif_enc, { AVIFModule } from '../../../codecs/avif/enc/avif_enc';
+import wasmUrl from '../../../codecs/avif/enc/avif_enc.wasm';
+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);
+
+  const module = await emscriptenModule;
+  const result = module.encode(data.data, data.width, data.height, options);
+
+  if (!result) {
+    throw new Error('Encoding error');
+  }
+
+  // wasm can’t run on SharedArrayBuffers, so we hard-cast to ArrayBuffer.
+  return result.buffer as ArrayBuffer;
+}

src/codecs/avif/options.tsx

@@ -0,0 +1,310 @@
+import { h, Component } from 'preact';
+import { preventDefault, shallowEqual } from '../../lib/util';
+import { EncodeOptions, defaultOptions } from './encoder-meta';
+import * as style from '../../components/Options/style.scss';
+import Checkbox from '../../components/checkbox';
+import Expander from '../../components/expander';
+import Select from '../../components/select';
+import Range from '../../components/range';
+import linkState from 'linkstate';
+
+interface Props {
+  options: EncodeOptions;
+  onChange(newOptions: EncodeOptions): void;
+}
+
+interface State {
+  options: EncodeOptions;
+  lossless: boolean;
+  maxQuality: number;
+  minQuality: number;
+  separateAlpha: boolean;
+  losslessAlpha: boolean;
+  maxAlphaQuality: number;
+  minAlphaQuality: number;
+  showAdvanced: boolean;
+  grayscale: boolean;
+  subsample: number;
+  tileRows: number;
+  tileCols: number;
+  effort: number;
+}
+
+const maxQuant = 63;
+const maxSpeed = 10;
+
+export default class AVIFEncoderOptions extends Component<Props, State> {
+  static getDerivedStateFromProps(props: Props, state: State): Partial<State> | undefined {
+    if (state.options && shallowEqual(state.options, props.options)) return;
+    const { options } = props;
+
+    const lossless = options.maxQuantizer === 0 && options.minQuantizer === 0;
+    const minQuantizerValue = lossless ? defaultOptions.minQuantizer : options.minQuantizer;
+    const maxQuantizerValue = lossless ? defaultOptions.maxQuantizer : options.maxQuantizer;
+    const losslessAlpha = options.maxQuantizerAlpha === 0 && options.minQuantizerAlpha === 0;
+    const minQuantizerAlphaValue = losslessAlpha ?
+      defaultOptions.minQuantizerAlpha : options.minQuantizerAlpha;
+    const maxQuantizerAlphaValue = losslessAlpha ?
+      defaultOptions.maxQuantizerAlpha : options.maxQuantizerAlpha;
+
+    // Create default form state from options
+    return {
+      options,
+      lossless,
+      losslessAlpha,
+      maxQuality: maxQuant - minQuantizerValue,
+      minQuality: maxQuant - maxQuantizerValue,
+      separateAlpha: options.maxQuantizer !== options.maxQuantizerAlpha ||
+        options.minQuantizer !== options.minQuantizerAlpha,
+      maxAlphaQuality: maxQuant - minQuantizerAlphaValue,
+      minAlphaQuality: maxQuant - maxQuantizerAlphaValue,
+      grayscale: options.subsample === 0,
+      subsample: options.subsample === 0 || lossless ? defaultOptions.subsample : options.subsample,
+      tileRows: options.tileRowsLog2,
+      tileCols: options.tileColsLog2,
+      effort: maxSpeed - options.speed,
+    };
+  }
+
+  // The rest of the defaults are set in getDerivedStateFromProps
+  state: State = {
+    showAdvanced: false,
+  } as State;
+
+  private _inputChangeCallbacks = new Map<string, (event: Event) => void>();
+
+  private _inputChange = (prop: keyof State, type: 'number' | 'boolean') => {
+    // Cache the callback for performance
+    if (!this._inputChangeCallbacks.has(prop)) {
+      this._inputChangeCallbacks.set(prop, (event: Event) => {
+        const formEl = event.target as HTMLInputElement | HTMLSelectElement;
+        const newVal = type === 'boolean' ?
+          'checked' in formEl ? formEl.checked : !!formEl.value :
+          Number(formEl.value);
+
+        const newState: Partial<State> = {
+          [prop]: newVal,
+        };
+
+        // Ensure that min cannot be greater than max
+        switch (prop) {
+          case 'maxQuality':
+            if (newVal < this.state.minQuality) {
+              newState.minQuality = newVal as number;
+            }
+            break;
+          case 'minQuality':
+            if (newVal > this.state.maxQuality) {
+              newState.maxQuality = newVal as number;
+            }
+            break;
+          case 'maxAlphaQuality':
+            if (newVal < this.state.minAlphaQuality) {
+              newState.minAlphaQuality = newVal as number;
+            }
+            break;
+          case 'minAlphaQuality':
+            if (newVal > this.state.maxAlphaQuality) {
+              newState.maxAlphaQuality = newVal as number;
+            }
+            break;
+        }
+
+        const optionState = {
+          ...this.state,
+          ...newState,
+        };
+
+        const maxQuantizer = optionState.lossless ? 0 : (maxQuant - optionState.minQuality);
+        const minQuantizer = optionState.lossless ? 0 : (maxQuant - optionState.maxQuality);
+
+        const newOptions: EncodeOptions = {
+          maxQuantizer,
+          minQuantizer,
+          maxQuantizerAlpha: optionState.separateAlpha ?
+            (optionState.losslessAlpha ? 0 : (maxQuant - optionState.minAlphaQuality)) :
+            maxQuantizer,
+          minQuantizerAlpha: optionState.separateAlpha ?
+            (optionState.losslessAlpha ? 0 : (maxQuant - optionState.maxAlphaQuality)) :
+            minQuantizer,
+          // Always set to 4:4:4 if lossless
+          subsample: optionState.grayscale ? 0 : optionState.lossless ? 3 : optionState.subsample,
+          tileColsLog2: optionState.tileCols,
+          tileRowsLog2: optionState.tileRows,
+          speed: maxSpeed - optionState.effort,
+        };
+
+        // Updating options, so we don't recalculate in getDerivedStateFromProps.
+        newState.options = newOptions;
+
+        this.setState(
+          // It isn't clear to me why I have to cast this :)
+          newState as State,
+        );
+
+        this.props.onChange(newOptions);
+      });
+    }
+
+    return this._inputChangeCallbacks.get(prop)!;
+  }
+
+  render(
+    _: Props,
+    {
+      effort, grayscale, lossless, losslessAlpha, maxAlphaQuality, maxQuality, minAlphaQuality,
+      minQuality, separateAlpha, showAdvanced, subsample, tileCols, tileRows,
+    }: State,
+  ) {
+    return (
+      <form class={style.optionsSection} onSubmit={preventDefault}>
+        <label class={style.optionInputFirst}>
+          <Checkbox
+            checked={lossless}
+            onChange={this._inputChange('lossless', 'boolean')}
+          />
+          Lossless
+        </label>
+        <Expander>
+          {!lossless && (
+            <div>
+              <div class={style.optionOneCell}>
+                <Range
+                  min="0"
+                  max="62"
+                  value={maxQuality}
+                  onInput={this._inputChange('maxQuality', 'number')}
+                >
+                  Max quality:
+                </Range>
+              </div>
+              <div class={style.optionOneCell}>
+                <Range
+                  min="0"
+                  max="62"
+                  value={minQuality}
+                  onInput={this._inputChange('minQuality', 'number')}
+                >
+                  Min quality:
+                </Range>
+              </div>
+            </div>
+          )}
+        </Expander>
+        <label class={style.optionInputFirst}>
+          <Checkbox
+            checked={separateAlpha}
+            onChange={this._inputChange('separateAlpha', 'boolean')}
+          />
+          Separate alpha quality
+        </label>
+        <Expander>
+        {separateAlpha && (
+            <div>
+              <label class={style.optionInputFirst}>
+                <Checkbox
+                  checked={losslessAlpha}
+                  onChange={this._inputChange('losslessAlpha', 'boolean')}
+                />
+                Lossless alpha
+              </label>
+              <Expander>
+                {!losslessAlpha &&
+                  <div>
+                    <div class={style.optionOneCell}>
+                      <Range
+                        min="0"
+                        max="62"
+                        value={maxAlphaQuality}
+                        onInput={this._inputChange('maxAlphaQuality', 'number')}
+                      >
+                        Max alpha quality:
+                      </Range>
+                    </div>
+                    <div class={style.optionOneCell}>
+                      <Range
+                        min="0"
+                        max="62"
+                        value={minAlphaQuality}
+                        onInput={this._inputChange('minAlphaQuality', 'number')}
+                      >
+                        Min alpha quality:
+                      </Range>
+                    </div>
+                  </div>
+                }
+              </Expander>
+            </div>
+          )}
+        </Expander>
+        <label class={style.optionInputFirst}>
+          <Checkbox
+            checked={showAdvanced}
+            onChange={linkState(this, 'showAdvanced')}
+          />
+          Show advanced settings
+        </label>
+        <Expander>
+          {showAdvanced &&
+            <div>
+              {/*<label class={style.optionInputFirst}>
+                <Checkbox
+                  data-set-state="grayscale"
+                  checked={grayscale}
+                  onChange={this._inputChange('grayscale', 'boolean')}
+                />
+                Grayscale
+              </label>*/}
+              <Expander>
+                {!grayscale && !lossless &&
+                  <label class={style.optionTextFirst}>
+                    Subsample chroma:
+                    <Select
+                      data-set-state="subsample"
+                      value={subsample}
+                      onChange={this._inputChange('subsample', 'number')}
+                    >
+                      <option value="1">4:2:0</option>
+                      {/*<option value="2">4:2:2</option>*/}
+                      <option value="3">4:4:4</option>
+                    </Select>
+                  </label>
+                }
+              </Expander>
+              <div class={style.optionOneCell}>
+                <Range
+                  min="0"
+                  max="6"
+                  value={tileRows}
+                  onInput={this._inputChange('tileRows', 'number')}
+                >
+                  Log2 of tile rows:
+                </Range>
+              </div>
+              <div class={style.optionOneCell}>
+                <Range
+                  min="0"
+                  max="6"
+                  value={tileCols}
+                  onInput={this._inputChange('tileCols', 'number')}
+                >
+                  Log2 of tile cols:
+                </Range>
+              </div>
+            </div>
+          }
+        </Expander>
+        <div class={style.optionOneCell}>
+          <Range
+            min="0"
+            max="10"
+            value={effort}
+            onInput={this._inputChange('effort', 'number')}
+          >
+            Effort:
+          </Range>
+        </div>
+      </form>
+    );
+  }
+}

src/codecs/decoders.ts

@@ -1,18 +1,16 @@
-import { builtinDecode, sniffMimeType, canDecodeImage } from '../lib/util';
+import { builtinDecode, sniffMimeType, canDecodeImageType } from '../lib/util';
 import Processor from './processor';
-import webpDataUrl from 'url-loader!./tiny.webp';
-
-const webPSupported = canDecodeImage(webpDataUrl);
 
 export async function decodeImage(blob: Blob, processor: Processor): Promise<ImageData> {
   const mimeType = await sniffMimeType(blob);
+  const canDecode = await canDecodeImageType(mimeType);
 
   try {
-    if (mimeType === 'image/webp' && !(await webPSupported)) {
-      return await processor.webpDecode(blob);
+    if (!canDecode) {
+      if (mimeType === 'image/avif') return await processor.avifDecode(blob);
+      if (mimeType === 'image/webp') return await processor.webpDecode(blob);
+      // If it's not one of those types, fall through and try built-in decoding for a laugh.
     }
-
-    // Otherwise, just throw it at the browser's decoder.
     return await builtinDecode(blob);
   } catch (err) {
     throw Error("Couldn't decode image");

src/codecs/encoders.ts

@@ -2,6 +2,7 @@ import * as identity from './identity/encoder-meta';
 import * as oxiPNG from './oxipng/encoder-meta';
 import * as mozJPEG from './mozjpeg/encoder-meta';
 import * as webP from './webp/encoder-meta';
+import * as avif from './avif/encoder-meta';
 import * as browserPNG from './browser-png/encoder-meta';
 import * as browserJPEG from './browser-jpeg/encoder-meta';
 import * as browserWebP from './browser-webp/encoder-meta';
@@ -20,6 +21,7 @@ export type EncoderState =
   oxiPNG.EncoderState |
   mozJPEG.EncoderState |
   webP.EncoderState |
+  avif.EncoderState |
   browserPNG.EncoderState |
   browserJPEG.EncoderState |
   browserWebP.EncoderState |
@@ -34,6 +36,7 @@ export type EncoderOptions =
   oxiPNG.EncodeOptions |
   mozJPEG.EncodeOptions |
   webP.EncodeOptions |
+  avif.EncodeOptions |
   browserPNG.EncodeOptions |
   browserJPEG.EncodeOptions |
   browserWebP.EncodeOptions |
@@ -50,6 +53,7 @@ export const encoderMap = {
   [oxiPNG.type]: oxiPNG,
   [mozJPEG.type]: mozJPEG,
   [webP.type]: webP,
+  [avif.type]: avif,
   [browserPNG.type]: browserPNG,
   [browserJPEG.type]: browserJPEG,
   [browserWebP.type]: browserWebP,

src/codecs/processor-worker/index.ts

@@ -82,6 +82,22 @@ async function webpDecode(data: ArrayBuffer): Promise<ImageData> {
   return timed('webpDecode', () => decode(data));
 }
 
+async function avifEncode(
+  data: ImageData, options: import('../avif/encoder-meta').EncodeOptions,
+): Promise<ArrayBuffer> {
+  const { encode } = await import(
+    /* webpackChunkName: "process-avif-enc" */
+    '../avif/encoder');
+  return timed('avifEncode', () => encode(data, options));
+}
+
+async function avifDecode(data: ArrayBuffer): Promise<ImageData> {
+  const { decode } = await import(
+    /* webpackChunkName: "process-avif-dec" */
+    '../avif/decoder');
+  return timed('avifDencode', () => decode(data));
+}
+
 const exports = {
   mozjpegEncode,
   quantize,
@@ -90,6 +106,8 @@ const exports = {
   oxiPngEncode,
   webpEncode,
   webpDecode,
+  avifEncode,
+  avifDecode,
 };
 export type ProcessorWorkerApi = typeof exports;
 

src/codecs/processor.ts

@@ -4,6 +4,7 @@ import { canvasEncode, blobToArrayBuffer } from '../lib/util';
 import { EncodeOptions as MozJPEGEncoderOptions } from './mozjpeg/encoder-meta';
 import { EncodeOptions as OxiPNGEncoderOptions } from './oxipng/encoder-meta';
 import { EncodeOptions as WebPEncoderOptions } from './webp/encoder-meta';
+import { EncodeOptions as AvifEncoderOptions } from './avif/encoder-meta';
 import { EncodeOptions as BrowserJPEGOptions } from './browser-jpeg/encoder-meta';
 import { EncodeOptions as BrowserWebpEncodeOptions } from './browser-webp/encoder-meta';
 import { BrowserResizeOptions, VectorResizeOptions } from './resize/processor-meta';
@@ -163,6 +164,17 @@ export default class Processor {
     return this._workerApi!.webpDecode(data);
   }
 
+  @Processor._processingJob({ needsWorker: true })
+  async avifDecode(blob: Blob): Promise<ImageData> {
+    const data = await blobToArrayBuffer(blob);
+    return this._workerApi!.avifDecode(data);
+  }
+
+  @Processor._processingJob({ needsWorker: true })
+  avifEncode(data: ImageData, opts: AvifEncoderOptions): Promise<ArrayBuffer> {
+    return this._workerApi!.avifEncode(data, opts);
+  }
+
   // Not-worker jobs:
 
   @Processor._processingJob()

src/codecs/webp/decoder.ts

@@ -8,5 +8,9 @@ export async function decode(data: ArrayBuffer): Promise<ImageData> {
   if (!emscriptenModule) emscriptenModule = initEmscriptenModule(webp_dec, wasmUrl);
 
   const module = await emscriptenModule;
-  return module.decode(data);
+  const result = module.decode(data);
+  if (!result) {
+    throw new Error('Decoding error');
+  }
+  return result;
 }

src/codecs/webp/encoder.ts

@@ -10,6 +10,9 @@ export async function encode(data: ImageData, options: EncodeOptions): Promise<A
 
   const module = await emscriptenModule;
   const result = module.encode(data.data, data.width, data.height, options);
+  if (!result) {
+    throw new Error('Encoding error.');
+  }
   // wasm can’t run on SharedArrayBuffers, so we hard-cast to ArrayBuffer.
   return result.buffer as ArrayBuffer;
 }

src/components/Options/index.tsx

@@ -7,6 +7,7 @@ import OxiPNGEncoderOptions from '../../codecs/oxipng/options';
 import MozJpegEncoderOptions from '../../codecs/mozjpeg/options';
 import BrowserJPEGEncoderOptions from '../../codecs/browser-jpeg/options';
 import WebPEncoderOptions from '../../codecs/webp/options';
+import AvifEncoderOptions from '../../codecs/avif/options';
 import BrowserWebPEncoderOptions from '../../codecs/browser-webp/options';
 
 import QuantizerOptionsComponent from '../../codecs/imagequant/options';
@@ -16,6 +17,7 @@ import * as identity from '../../codecs/identity/encoder-meta';
 import * as oxiPNG from '../../codecs/oxipng/encoder-meta';
 import * as mozJPEG from '../../codecs/mozjpeg/encoder-meta';
 import * as webP from '../../codecs/webp/encoder-meta';
+import * as avif from '../../codecs/avif/encoder-meta';
 import * as browserPNG from '../../codecs/browser-png/encoder-meta';
 import * as browserJPEG from '../../codecs/browser-jpeg/encoder-meta';
 import * as browserWebP from '../../codecs/browser-webp/encoder-meta';
@@ -47,6 +49,7 @@ const encoderOptionsComponentMap: {
   [oxiPNG.type]: OxiPNGEncoderOptions,
   [mozJPEG.type]: MozJpegEncoderOptions,
   [webP.type]: WebPEncoderOptions,
+  [avif.type]: AvifEncoderOptions,
   [browserPNG.type]: undefined,
   [browserJPEG.type]: BrowserJPEGEncoderOptions,
   [browserWebP.type]: BrowserWebPEncoderOptions,

src/components/compress/index.tsx

@@ -10,6 +10,7 @@ import * as identity from '../../codecs/identity/encoder-meta';
 import * as oxiPNG from '../../codecs/oxipng/encoder-meta';
 import * as mozJPEG from '../../codecs/mozjpeg/encoder-meta';
 import * as webP from '../../codecs/webp/encoder-meta';
+import * as avif from '../../codecs/avif/encoder-meta';
 import * as browserPNG from '../../codecs/browser-png/encoder-meta';
 import * as browserJPEG from '../../codecs/browser-jpeg/encoder-meta';
 import * as browserWebP from '../../codecs/browser-webp/encoder-meta';
@@ -136,6 +137,7 @@ async function compressImage(
       case oxiPNG.type: return processor.oxiPngEncode(image, encodeData.options);
       case mozJPEG.type: return processor.mozjpegEncode(image, encodeData.options);
       case webP.type: return processor.webpEncode(image, encodeData.options);
+      case avif.type: return processor.avifEncode(image, encodeData.options);
       case browserPNG.type: return processor.browserPngEncode(image);
       case browserJPEG.type: return processor.browserJpegEncode(image, encodeData.options);
       case browserWebP.type: return processor.browserWebpEncode(image, encodeData.options);

src/lib/util.ts

@@ -78,11 +78,36 @@ async function decodeImage(url: string): Promise<HTMLImageElement> {
   return img;
 }
 
+/** Caches results from canDecodeImageType */
+const canDecodeCache = new Map<string, Promise<boolean>>();
+
 /**
- * Attempts to load the given URL as an image.
+ * Tests whether the browser supports a particular image mime type.
+ *
+ * @param type Mimetype
+ * @example await canDecodeImageType('image/avif')
  */
-export function canDecodeImage(url: string): Promise<boolean> {
-  return decodeImage(url).then(() => true, () => false);
+export function canDecodeImageType(type: string): Promise<boolean> {
+  if (!canDecodeCache.has(type)) {
+    const resultPromise = (async () => {
+      const picture = document.createElement('picture');
+      const img = document.createElement('img');
+      const source = document.createElement('source');
+      source.srcset = 'data:,x';
+      source.type = type;
+      picture.append(source, img);
+
+      // Wait a single microtick just for the `img.currentSrc` to get populated.
+      await 0;
+      // At this point `img.currentSrc` will contain "data:,x" if format is supported and ""
+      // otherwise.
+      return !!img.currentSrc;
+    })();
+
+    canDecodeCache.set(type, resultPromise);
+  }
+
+  return canDecodeCache.get(type)!;
 }
 
 export function blobToArrayBuffer(blob: Blob): Promise<ArrayBuffer> {
@@ -104,6 +129,7 @@ const magicNumberToMimeType = new Map<RegExp, string>([
   [/^II*/, 'image/tiff'],
   [/^MM\x00*/, 'image/tiff'],
   [/^RIFF....WEBPVP8[LX ]/, 'image/webp'],
+  [/^\x00\x00\x00 ftypavif\x00\x00\x00\x00/, 'image/avif'],
 ]);
 
 export async function sniffMimeType(blob: Blob): Promise<string> {

src/sw/util.ts

@@ -1,4 +1,5 @@
-import webpDataUrl from 'url-loader!../codecs/tiny.webp';
+import webpDataUrl from 'url-loader!./tiny.webp';
+import avifDataUrl from 'url-loader!./tiny.avif';
 
 // Give TypeScript the correct global.
 declare var self: ServiceWorkerGlobalScope;
@@ -109,17 +110,20 @@ export async function cacheAdditionalProcessors(cacheName: string, buildAssets:
 
   toCache.push(...prefixMatches, ...wasm);
 
-  const supportsWebP = await (async () => {
-    if (!self.createImageBitmap) return false;
-    const response = await fetch(webpDataUrl);
-    const blob = await response.blob();
-    return createImageBitmap(blob).then(() => true, () => false);
-  })();
+  const [supportsWebP, supportsAvif] = await Promise.all(
+    [webpDataUrl, avifDataUrl].map(async (dataUrl) => {
+      if (!self.createImageBitmap) return false;
+      const response = await fetch(dataUrl);
+      const blob = await response.blob();
+      return createImageBitmap(blob).then(() => true, () => false);
+    }),
+  )
 
-  // No point caching the WebP decoder if the browser supports it:
-  if (supportsWebP) {
-    toCache = toCache.filter(asset => !/webp[\-_]dec/.test(asset));
-  }
+  // No point caching decoders the browser already supports:
+  toCache = toCache.filter(asset =>
+    (supportsWebP ? !/webp[\-_]dec/.test(asset) : true) &&
+    (supportsAvif ? !/avif[\-_]dec/.test(asset) : true),
+  );
 
   const cache = await caches.open(cacheName);
   await cache.addAll(toCache);