1.12.0

This reverts commit 5715fb7b1b, reversing
changes made to 2c923e5239.

.babelrc

@@ -1,13 +0,0 @@
-{
-  "plugins": [
-    "transform-class-properties",
-    "transform-react-constant-elements",
-    "transform-react-remove-prop-types",
-    [
-      "transform-react-jsx",
-      {
-        "pragma": "h"
-      }
-    ]
-  ]
-}

.clang-format

@@ -0,0 +1,2 @@
+BasedOnStyle: Chromium
+ColumnLimit: 100

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,36 @@
+---
+name: Bug report
+about: Something is not working as expected
+labels: 
+
+---
+
+**Before you start**
+Please take a look at the [FAQ](https://github.com/GoogleChromeLabs/squoosh/wiki/FAQ) as well as the already opened issues! If nothing fits your problem, go ahead and fill out the following template:
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Version:**
+ - OS w/ version: [e.g. iOS 12]
+ - Browser w/ version [e.g. Chrome 70]
+ - Node version: [e.g. 10.11.0]
+ - npm version: [e.g. 6.4.1]
+
+**Is your issue related to the quality of image compression?**
+Please attach original and output images (you can drag & drop to attach). 
+- Original image 
+- Output image from Squoosh
+
+**Additional context, screenshots, screencasts**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,18 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+labels: 
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Does other service/app have this feature?**
+Add any service you know/use that has this feature (We want to know for research)
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.nvmrc

@@ -0,0 +1 @@
+10.16.2

.travis.yml

@@ -1,5 +1,7 @@
 language: node_js
-node_js:
-- node
 cache: npm
-script: npm run build || npm run build # scss ts definitions need to be generated before an actual build
+script: npm run build
+after_success: npm run sizereport
+os:
+  - linux
+  - windows

README.md

@@ -1,5 +1,32 @@
-# Squoosh!
+# [Squoosh]!
 
-Squoosh will be an image compression web app that allows you to dive into the
-advanced options provided by various image compressors.
+[Squoosh] is an image compression web app that allows you to dive into the advanced options provided
+by various image compressors.
 
+# Privacy
+
+Google Analytics is used to record the following:
+
+* [Basic visit data](https://support.google.com/analytics/answer/6004245?ref_topic=2919631).
+* Before and after image size once an image is downloaded. These values are rounded to the nearest
+  kilobyte.
+* If install is available, when Squoosh is installed, and what method was used to install Squoosh.
+
+Image compression is handled locally; no additional data is sent to the server.
+
+# Building locally
+
+Clone the repo, and:
+
+```sh
+npm install
+npm run build
+```
+
+You can run the development server with:
+
+```sh
+npm start
+```
+
+[Squoosh]: https://squoosh.app

_headers.ejs

@@ -0,0 +1,18 @@
+# Long-term cache by default.
+/*
+  Cache-Control: max-age=31536000
+
+# And here are the exceptions:
+/
+  Cache-Control: no-cache
+
+/serviceworker.js
+  Cache-Control: no-cache
+
+/manifest.json
+  Cache-Control: must-revalidate, max-age=3600
+
+# URLs in /assets do not include a hash and are mutable.
+# But it isn't a big deal if the user gets an old version.
+/assets/*
+  Cache-Control: must-revalidate, max-age=3600

_redirects.ejs

@@ -0,0 +1,2 @@
+/index.html / 301
+/* /index.html 301

codecs/README.md

@@ -11,6 +11,6 @@ $ npm install
 $ npm run build
 ```
 
-This will build two files: `<codec name>_<enc or dec>.js` and `<codec name>_<enc or dec>.wasm`. It will most likely be necessary to set [`Module["locateFile"]`](https://kripken.github.io/emscripten-site/docs/api_reference/module.html#affecting-execution) to sucessfully load the `.wasm` file. When the `.js` file is loaded, a global `<codec name>_<enc or dec>` is created with the same API as an [Emscripten `Module`](https://kripken.github.io/emscripten-site/docs/api_reference/module.html).
+This will build two files: `<codec name>_<enc or dec>.js` and `<codec name>_<enc or dec>.wasm`. It will most likely be necessary to set [`Module["locateFile"]`](https://kripken.github.io/emscripten-site/docs/api_reference/module.html#affecting-execution) to successfully load the `.wasm` file. When the `.js` file is loaded, a global `<codec name>_<enc or dec>` is created with the same API as an [Emscripten `Module`](https://kripken.github.io/emscripten-site/docs/api_reference/module.html).
 
 Each codec will document its API in its README.

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]"};
+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;
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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}
+function sa(a,b){for(var c=0,e="";!(c>=b/4);){var f=I[a+4*c>>2];if(0==f)break;++c;65536<=f?(f-=65536,e+=String.fromCharCode(55296|f>>10,56320|f&1023)):e+=String.fromCharCode(f)}return e}function ta(a,b,c){void 0===c&&(c=2147483647);if(4>c)return 0;var e=b;c=e+c-4;for(var f=0;f<a.length;++f){var g=a.charCodeAt(f);if(55296<=g&&57343>=g){var h=a.charCodeAt(++f);g=65536+((g&1023)<<10)|h&1023}I[b>>2]=g;b+=4;if(b+4>c)break}I[b>>2]=0;return b-e}
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+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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+
+
+  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 || {};
+
+
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+function B(a,b,c){var d=b+c;for(c=b;a[c]&&!(c>=d);)++c;if(16<c-b&&a.subarray&&qa)return qa.decode(a.subarray(b,c));for(d="";b<c;){var e=a[b++];if(e&128){var g=a[b++]&63;if(192==(e&224))d+=String.fromCharCode((e&31)<<6|g);else{var h=a[b++]&63;e=224==(e&240)?(e&15)<<12|g<<6|h:(e&7)<<18|g<<12|h<<6|a[b++]&63;65536>e?d+=String.fromCharCode(e):(e-=65536,d+=String.fromCharCode(55296|e>>10,56320|e&1023))}}else d+=String.fromCharCode(e)}return d}
+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;++g){var h=a.charCodeAt(g);if(55296<=h&&57343>=h){var k=a.charCodeAt(++g);h=65536+((h&1023)<<10)|k&1023}if(127>=h){if(c>=d)break;b[c++]=h}else{if(2047>=h){if(c+1>=d)break;b[c++]=192|h>>6}else{if(65535>=h){if(c+2>=d)break;b[c++]=224|h>>12}else{if(c+3>=d)break;b[c++]=240|h>>18;b[c++]=128|h>>12&63}b[c++]=128|h>>6&63}b[c++]=128|h&63}}b[c]=0;return c-e}
+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}
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codecs/avif/package.json

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+{
+  "name": "avif",
+  "scripts": {
+    "build": "../build-cpp.sh"
+  }
+}

codecs/build-cpp.sh

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+docker build -t squoosh-cpp - < ../cpp.Dockerfile
+docker run --rm -v $PWD:/src squoosh-cpp

codecs/build-rust.sh

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+
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+docker run --rm -v $PWD:/src squoosh-rust "$@"

codecs/cpp.Dockerfile

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+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}"
+# Build and cache standard libraries with these flags
+RUN emcc ${CXXFLAGS} --bind -xc++ /dev/null -o /dev/null
+WORKDIR /src
+CMD ["sh", "-c", "emmake make -j`nproc`"]

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codecs/hqx/Cargo.toml

@@ -0,0 +1,37 @@
+[package]
+name = "squooshhqx"
+version = "0.1.0"
+authors = ["Surma <surma@surma.link>"]
+
+[lib]
+crate-type = ["cdylib"]
+
+[features]
+default = ["console_error_panic_hook", "wee_alloc"]
+
+[dependencies]
+cfg-if = "0.1.2"
+wasm-bindgen = "0.2.38"
+# lazy_static = "1.0.0"
+hqx = {git = "https://github.com/CryZe/wasmboy-rs", tag="v0.1.2"}
+
+# The `console_error_panic_hook` crate provides better debugging of panics by
+# logging them with `console.error`. This is great for development, but requires
+# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
+# code size when deploying.
+console_error_panic_hook = { version = "0.1.1", optional = true }
+
+# `wee_alloc` is a tiny allocator for wasm that is only ~1K in code size
+# compared to the default allocator's ~10K. It is slower than the default
+# allocator, however.
+#
+# Unfortunately, `wee_alloc` requires nightly Rust when targeting wasm for now.
+wee_alloc = { version = "0.4.2", optional = true }
+
+[dev-dependencies]
+wasm-bindgen-test = "0.2"
+
+[profile.release]
+# Tell `rustc` to optimize for small code size.
+opt-level = "s"
+lto = true

codecs/hqx/Dockerfile

@@ -0,0 +1,11 @@
+# This is intentionally an old version of Rust. Newer versions
+# generate _significantly_ bigger Wasm binaries.
+FROM rust:1.37
+RUN rustup target add wasm32-unknown-unknown
+RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+
+RUN mkdir /opt/binaryen && \
+ curl -L https://github.com/WebAssembly/binaryen/releases/download/1.38.32/binaryen-1.38.32-x86-linux.tar.gz  | tar -xzf - -C /opt/binaryen --strip 1
+
+ENV PATH="/opt/binaryen:${PATH}"
+WORKDIR /src

codecs/hqx/LICENSE.codec.md

@@ -0,0 +1,201 @@
+                                 Apache License
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+
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codecs/hqx/README.md

@@ -0,0 +1,5 @@
+# HQX
+
+- Source: <https://github.com/CryZe/wasmboy-rs>
+- Version: v0.1.2
+- License: Apache 2.0

codecs/hqx/build.sh

@@ -0,0 +1,21 @@
+#!/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/hqx/package-lock.json

@@ -0,0 +1,4 @@
+{
+  "name": "hqx",
+  "lockfileVersion": 1
+}

codecs/hqx/package.json

@@ -0,0 +1,7 @@
+{
+  "name": "hqx",
+  "scripts": {
+    "build:image": "docker build -t squoosh-hqx - < Dockerfile",
+    "build": "docker run --rm -v $(pwd):/src squoosh-hqx ./build.sh"
+  }
+}

codecs/hqx/pkg/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "squooshhqx",
+  "collaborators": [
+    "Surma <surma@surma.link>"
+  ],
+  "version": "0.1.0",
+  "files": [
+    "squooshhqx_bg.wasm",
+    "squooshhqx.js",
+    "squooshhqx.d.ts"
+  ],
+  "module": "squooshhqx.js",
+  "types": "squooshhqx.d.ts",
+  "sideEffects": false
+}

codecs/hqx/pkg/squooshhqx.d.ts

@@ -0,0 +1,10 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+* @param {Uint32Array} input_image
+* @param {number} input_width
+* @param {number} input_height
+* @param {number} factor
+* @returns {Uint32Array}
+*/
+export function resize(input_image: Uint32Array, input_width: number, input_height: number, factor: number): Uint32Array;

codecs/hqx/pkg/squooshhqx.js

@@ -0,0 +1,2 @@
+import * as wasm from "./squooshhqx_bg.wasm";
+export * from "./squooshhqx_bg.js";

codecs/hqx/pkg/squooshhqx_bg.d.ts

@@ -0,0 +1,6 @@
+/* tslint:disable */
+/* eslint-disable */
+export const memory: WebAssembly.Memory;
+export function resize(a: number, b: number, c: number, d: number, e: number, f: number): void;
+export function __wbindgen_malloc(a: number): number;
+export function __wbindgen_free(a: number, b: number): void;

codecs/hqx/pkg/squooshhqx_bg.js

@@ -0,0 +1,48 @@
+import * as wasm from './squooshhqx_bg.wasm';
+
+let cachegetUint32Memory0 = null;
+function getUint32Memory0() {
+    if (cachegetUint32Memory0 === null || cachegetUint32Memory0.buffer !== wasm.memory.buffer) {
+        cachegetUint32Memory0 = new Uint32Array(wasm.memory.buffer);
+    }
+    return cachegetUint32Memory0;
+}
+
+let WASM_VECTOR_LEN = 0;
+
+function passArray32ToWasm0(arg, malloc) {
+    const ptr = malloc(arg.length * 4);
+    getUint32Memory0().set(arg, ptr / 4);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+let cachegetInt32Memory0 = null;
+function getInt32Memory0() {
+    if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== wasm.memory.buffer) {
+        cachegetInt32Memory0 = new Int32Array(wasm.memory.buffer);
+    }
+    return cachegetInt32Memory0;
+}
+
+function getArrayU32FromWasm0(ptr, len) {
+    return getUint32Memory0().subarray(ptr / 4, ptr / 4 + len);
+}
+/**
+* @param {Uint32Array} input_image
+* @param {number} input_width
+* @param {number} input_height
+* @param {number} factor
+* @returns {Uint32Array}
+*/
+export function resize(input_image, input_width, input_height, factor) {
+    var ptr0 = passArray32ToWasm0(input_image, wasm.__wbindgen_malloc);
+    var len0 = WASM_VECTOR_LEN;
+    wasm.resize(8, ptr0, len0, input_width, input_height, factor);
+    var r0 = getInt32Memory0()[8 / 4 + 0];
+    var r1 = getInt32Memory0()[8 / 4 + 1];
+    var v1 = getArrayU32FromWasm0(r0, r1).slice();
+    wasm.__wbindgen_free(r0, r1 * 4);
+    return v1;
+}
+

codecs/hqx/src/lib.rs

@@ -0,0 +1,55 @@
+extern crate cfg_if;
+extern crate hqx;
+extern crate wasm_bindgen;
+
+mod utils;
+
+use cfg_if::cfg_if;
+use wasm_bindgen::prelude::*;
+
+cfg_if! {
+    // When the `wee_alloc` feature is enabled, use `wee_alloc` as the global
+    // allocator.
+    if #[cfg(feature = "wee_alloc")] {
+        extern crate wee_alloc;
+        #[global_allocator]
+        static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
+    }
+}
+
+#[wasm_bindgen]
+#[no_mangle]
+pub fn resize(
+    input_image: Vec<u32>,
+    input_width: usize,
+    input_height: usize,
+    factor: usize,
+) -> Vec<u32> {
+    let num_output_pixels = input_width * input_height * factor * factor;
+    let mut output_image = Vec::<u32>::with_capacity(num_output_pixels * 4);
+    output_image.resize(num_output_pixels, 0);
+
+    match factor {
+        2 => hqx::hq2x(
+            input_image.as_slice(),
+            output_image.as_mut_slice(),
+            input_width,
+            input_height,
+        ),
+        3 => hqx::hq3x(
+            input_image.as_slice(),
+            output_image.as_mut_slice(),
+            input_width,
+            input_height,
+        ),
+        4 => hqx::hq4x(
+            input_image.as_slice(),
+            output_image.as_mut_slice(),
+            input_width,
+            input_height,
+        ),
+        _ => unreachable!(),
+    };
+
+    return output_image;
+}

codecs/hqx/src/utils.rs

@@ -0,0 +1,17 @@
+use cfg_if::cfg_if;
+
+cfg_if! {
+    // When the `console_error_panic_hook` feature is enabled, we can call the
+    // `set_panic_hook` function at least once during initialization, and then
+    // we will get better error messages if our code ever panics.
+    //
+    // For more details see
+    // https://github.com/rustwasm/console_error_panic_hook#readme
+    if #[cfg(feature = "console_error_panic_hook")] {
+        extern crate console_error_panic_hook;
+        pub use self::console_error_panic_hook::set_once as set_panic_hook;
+    } else {
+        #[inline]
+        pub fn set_panic_hook() {}
+    }
+}

codecs/imagequant/LICENSE.codec.md

@@ -0,0 +1,641 @@
+
+libimagequant is derived from code by Jef Poskanzer and Greg Roelofs
+licensed under pngquant's original license (at the end of this file),
+and contains extensive changes and additions by Kornel Lesiński
+licensed under GPL v3 or later.
+
+- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+libimagequant © 2009-2018 by Kornel Lesiński.
+
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+ Everyone is permitted to copy and distribute verbatim copies
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+
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+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
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+
+  13. Use with the GNU Affero General Public License.
+
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+
+  14. Revised Versions of this License.
+
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+be similar in spirit to the present version, but may differ in detail to
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+
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+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
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+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
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+  15. Disclaimer of Warranty.
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+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
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+
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+above cannot be given local legal effect according to their terms,
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+an absolute waiver of all civil liability in connection with the
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+
+- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+© 1989, 1991 by Jef Poskanzer.
+© 1997, 2000, 2002 by Greg Roelofs.
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted, provided
+that the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.  This software is provided "as is" without express or
+implied warranty.

codecs/imagequant/Makefile

@@ -0,0 +1,40 @@
+CODEC_URL := https://github.com/ImageOptim/libimagequant/archive/2.12.1.tar.gz
+CODEC_DIR := node_modules/libimagequant
+CODEC_OUT_RELATIVE := libimagequant.a
+CODEC_OUT := $(addprefix $(CODEC_DIR)/, $(CODEC_OUT_RELATIVE))
+OUT_JS := imagequant.js
+OUT_WASM := $(OUT_JS:.js=.wasm)
+
+.PHONY: all clean
+
+all: $(OUT_JS)
+
+%.js: %.cpp $(CODEC_OUT)
+	$(CXX) \
+		-I $(CODEC_DIR) \
+		${CXXFLAGS} \
+		${LDFLAGS} \
+		--bind \
+		--closure 1 \
+		-s ALLOW_MEMORY_GROWTH=1 \
+		-s MODULARIZE=1 \
+		-s 'EXPORT_NAME="$(basename $(@F))"' \
+		-o $@ \
+		$+
+
+$(CODEC_OUT): $(CODEC_DIR)/config.mk
+	$(MAKE) -C $(CODEC_DIR) $(CODEC_OUT_RELATIVE)
+
+$(CODEC_DIR)/config.mk: $(CODEC_DIR)/configure
+	cd $(CODEC_DIR) && ./configure \
+		--disable-sse
+
+$(CODEC_DIR)/configure: $(CODEC_DIR)
+
+$(CODEC_DIR):
+	mkdir -p $@
+	curl -sL $(CODEC_URL) | tar xz --strip 1 -C $@
+
+clean:
+	$(RM) $(OUT_JS) $(OUT_WASM)
+	$(MAKE) -C $(CODEC_DIR) clean

codecs/imagequant/README.md

@@ -2,6 +2,7 @@
 
 - Source: <https://github.com/ImageOptim/libimagequant>
 - Version: v2.12.1
+- License: GPL3
 
 ## Dependencies
 
@@ -24,7 +25,3 @@ Quantizes the given images, using at most `numColors`, a value between 2 and 256
 ### `RawImage zx_quantize(std::string buffer, int image_width, int image_height, float dithering)`
 
 ???
-
-### `void free_result()`
-
-Frees the result created by `quantize()`.

codecs/imagequant/build.sh

@@ -1,48 +0,0 @@
-#!/bin/bash
-
-set -e
-
-export OPTIMIZE="-Os"
-export LDFLAGS="${OPTIMIZE}"
-export CFLAGS="${OPTIMIZE}"
-export CPPFLAGS="${OPTIMIZE}"
-
-echo "============================================="
-echo "Compiling libimagequant"
-echo "============================================="
-(
-  emcc \
-    --bind \
-    ${OPTIMIZE} \
-    -s ALLOW_MEMORY_GROWTH=1 \
-    -s MODULARIZE=1 \
-    -s 'EXPORT_NAME="imagequant"' \
-    -I node_modules/libimagequant \
-    --std=c99 \
-    -c \
-    node_modules/libimagequant/{libimagequant,pam,mediancut,blur,mempool,kmeans,nearest}.c
-)
-echo "============================================="
-echo "Compiling wasm module"
-echo "============================================="
-(
-  emcc \
-    --bind \
-    ${OPTIMIZE} \
-    -s ALLOW_MEMORY_GROWTH=1 \
-    -s MODULARIZE=1 \
-    -s 'EXPORT_NAME="imagequant"' \
-    -I node_modules/libimagequant \
-    -o ./imagequant.js \
-    --std=c++11 *.o \
-    -x c++ \
-    imagequant.cpp
-)
-echo "============================================="
-echo "Compiling wasm module done"
-echo "============================================="
-
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
-echo "Did you update your docker image?"
-echo "Run \`docker pull trzeci/emscripten\`"
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/imagequant/example.html

@@ -28,7 +28,6 @@
     // const rawImage = Module.quantize(image.data, image.width, image.height, 256, 1.0);
     const rawImage = Module.zx_quantize(image.data, image.width, image.height, 1.0);
     console.log('done');
-    Module.free_result();
 
     const imageData = new ImageData(new Uint8ClampedArray(rawImage.buffer), rawImage.width, rawImage.height);
     const canvas = document.createElement('canvas');

codecs/imagequant/imagequant.cpp

@@ -1,95 +1,87 @@
-#include "emscripten/bind.h"
-#include "emscripten/val.h"
-#include <stdlib.h>
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
 #include <inttypes.h>
 #include <limits.h>
 #include <math.h>
+#include <stdlib.h>
 
 #include "libimagequant.h"
 
 using namespace emscripten;
 
 int version() {
-  return (((LIQ_VERSION/10000) % 100) << 16) |
-         (((LIQ_VERSION/100  ) % 100) << 8) |
-         (((LIQ_VERSION/1    ) % 100) << 0);
+  return (((LIQ_VERSION / 10000) % 100) << 16) | (((LIQ_VERSION / 100) % 100) << 8) |
+         (((LIQ_VERSION / 1) % 100) << 0);
 }
 
-class RawImage {
-public:
-  val buffer;
-  int width;
-  int height;
+thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
 
-  RawImage(val b, int w, int h)
-    : buffer(b), width(w), height(h) {}
-};
+#define liq_ptr(T) std::unique_ptr<T, std::integral_constant<decltype(&T##_destroy), T##_destroy>>
 
+using liq_attr_ptr = liq_ptr(liq_attr);
+using liq_image_ptr = liq_ptr(liq_image);
+using liq_result_ptr = liq_ptr(liq_result);
 
-liq_attr *attr;
-liq_image *image;
-liq_result *res;
-uint8_t* result;
-RawImage quantize(std::string rawimage, int image_width, int image_height, int num_colors, float dithering) {
-  const uint8_t* image_buffer = (uint8_t*)rawimage.c_str();
-  int size = image_width * image_height;
-  attr = liq_attr_create();
-  image = liq_image_create_rgba(attr, image_buffer, image_width, image_height, 0);
-  liq_set_max_colors(attr, num_colors);
+liq_result_ptr liq_image_quantize(liq_image* image, liq_attr* attr) {
+  liq_result* res = nullptr;
   liq_image_quantize(image, attr, &res);
-  liq_set_dithering_level(res, dithering);
-  uint8_t* image8bit = (uint8_t*) malloc(size);
-  result = (uint8_t*) malloc(size * 4);
-  liq_write_remapped_image(res, image, image8bit, size);
-  const liq_palette *pal = liq_get_palette(res);
+  return liq_result_ptr(res);
+}
+
+val quantize(std::string rawimage,
+             int image_width,
+             int image_height,
+             int num_colors,
+             float dithering) {
+  auto image_buffer = (const liq_color*)rawimage.c_str();
+  int size = image_width * image_height;
+  liq_attr_ptr attr(liq_attr_create());
+  liq_image_ptr image(
+      liq_image_create_rgba(attr.get(), image_buffer, image_width, image_height, 0));
+  liq_set_max_colors(attr.get(), num_colors);
+  auto res = liq_image_quantize(image.get(), attr.get());
+  liq_set_dithering_level(res.get(), dithering);
+  std::vector<uint8_t> image8bit(size);
+  std::vector<liq_color> result(size);
+  liq_write_remapped_image(res.get(), image.get(), image8bit.data(), image8bit.size());
+  auto pal = liq_get_palette(res.get());
   // Turn palletted image back into an RGBA image
-  for(int i = 0; i < size; i++) {
-    result[i * 4 + 0] = pal->entries[image8bit[i]].r;
-    result[i * 4 + 1] = pal->entries[image8bit[i]].g;
-    result[i * 4 + 2] = pal->entries[image8bit[i]].b;
-    result[i * 4 + 3] = pal->entries[image8bit[i]].a;
+  for (int i = 0; i < size; i++) {
+    result[i] = pal->entries[image8bit[i]];
   }
-  free(image8bit);
-  liq_result_destroy(res);
-  liq_image_destroy(image);
-  liq_attr_destroy(attr);
-  return {
-    val(typed_memory_view(image_width*image_height*4, result)),
-    image_width,
-    image_height
-  };
+  return Uint8ClampedArray.new_(
+      typed_memory_view(result.size() * sizeof(liq_color), (const uint8_t*)result.data()));
 }
 
 const liq_color zx_colors[] = {
-  {.a = 255, .r = 0, .g = 0, .b = 0},       // regular black
-  {.a = 255, .r = 0, .g = 0, .b = 215},     // regular blue
-  {.a = 255, .r = 215, .g = 0, .b = 0},     // regular red
-  {.a = 255, .r = 215, .g = 0, .b = 215},   // regular magenta
-  {.a = 255, .r = 0, .g = 215, .b = 0},     // regular green
-  {.a = 255, .r = 0, .g = 215, .b = 215},   // regular cyan
-  {.a = 255, .r = 215, .g = 215, .b = 0},   // regular yellow
-  {.a = 255, .r = 215, .g = 215, .b = 215}, // regular white
-  {.a = 255, .r = 0, .g = 0, .b = 255},     // bright blue
-  {.a = 255, .r = 255, .g = 0, .b = 0},     // bright red
-  {.a = 255, .r = 255, .g = 0, .b = 255},   // bright magenta
-  {.a = 255, .r = 0, .g = 255, .b = 0},     // bright green
-  {.a = 255, .r = 0, .g = 255, .b = 255},   // bright cyan
-  {.a = 255, .r = 255, .g = 255, .b = 0},   // bright yellow
-  {.a = 255, .r = 255, .g = 255, .b = 255}  // bright white
+    {.r = 0, .g = 0, .b = 0, .a = 255},        // regular black
+    {.r = 0, .g = 0, .b = 215, .a = 255},      // regular blue
+    {.r = 215, .g = 0, .b = 0, .a = 255},      // regular red
+    {.r = 215, .g = 0, .b = 215, .a = 255},    // regular magenta
+    {.r = 0, .g = 215, .b = 0, .a = 255},      // regular green
+    {.r = 0, .g = 215, .b = 215, .a = 255},    // regular cyan
+    {.r = 215, .g = 215, .b = 0, .a = 255},    // regular yellow
+    {.r = 215, .g = 215, .b = 215, .a = 255},  // regular white
+    {.r = 0, .g = 0, .b = 255, .a = 255},      // bright blue
+    {.r = 255, .g = 0, .b = 0, .a = 255},      // bright red
+    {.r = 255, .g = 0, .b = 255, .a = 255},    // bright magenta
+    {.r = 0, .g = 255, .b = 0, .a = 255},      // bright green
+    {.r = 0, .g = 255, .b = 255, .a = 255},    // bright cyan
+    {.r = 255, .g = 255, .b = 0, .a = 255},    // bright yellow
+    {.r = 255, .g = 255, .b = 255, .a = 255}   // bright white
 };
 
-uint8_t block[8 * 8 * 4];
-
 /**
- * The ZX has one bit per pixel, but can assign two colours to an 8x8 block. The two colours must
- * both be 'regular' or 'bright'. Black exists as both regular and bright.
+ * The ZX has one bit per pixel, but can assign two colours to an 8x8 block. The
+ * two colours must both be 'regular' or 'bright'. Black exists as both regular
+ * and bright.
  */
-RawImage zx_quantize(std::string rawimage, int image_width, int image_height, float dithering) {
-  const uint8_t* image_buffer = (uint8_t*) rawimage.c_str();
+val zx_quantize(std::string rawimage, int image_width, int image_height, float dithering) {
+  auto image_buffer = (const liq_color*)rawimage.c_str();
   int size = image_width * image_height;
-  int bytes_per_pixel = 4;
-  result = (uint8_t*) malloc(size * bytes_per_pixel);
-  uint8_t* image8bit = (uint8_t*) malloc(8 * 8);
+  liq_color block[8 * 8];
+  uint8_t image8bit[8 * 8];
+  std::vector<liq_color> result(size);
 
   // For each 8x8 grid
   for (int block_start_y = 0; block_start_y < image_height; block_start_y += 8) {
@@ -99,7 +91,8 @@ RawImage zx_quantize(std::string rawimage, int image_width, int image_height, fl
       int block_width = 8;
       int block_height = 8;
 
-      // If the block hangs off the right/bottom of the image dimensions, make it smaller to fit.
+      // If the block hangs off the right/bottom of the image dimensions, make
+      // it smaller to fit.
       if (block_start_y + block_height > image_height) {
         block_height = image_height - block_start_y;
       }
@@ -111,26 +104,22 @@ RawImage zx_quantize(std::string rawimage, int image_width, int image_height, fl
       // For each pixel in that block:
       for (int y = block_start_y; y < block_start_y + block_height; y++) {
         for (int x = block_start_x; x < block_start_x + block_width; x++) {
-          int pixel_start = (y * image_width * bytes_per_pixel) + (x * bytes_per_pixel);
+          int pixel_start = (y * image_width) + x;
           int smallest_distance = INT_MAX;
           int winning_index = -1;
 
           // Copy pixel data for quantizing later
           block[block_index++] = image_buffer[pixel_start];
-          block[block_index++] = image_buffer[pixel_start + 1];
-          block[block_index++] = image_buffer[pixel_start + 2];
-          block[block_index++] = image_buffer[pixel_start + 3];
 
           // Which zx color is this pixel closest to?
           for (int color_index = 0; color_index < 15; color_index++) {
             liq_color color = zx_colors[color_index];
+            liq_color pixel = image_buffer[pixel_start];
 
-            // Using Euclidean distance. LibQuant has better methods, but it requires conversion to
-            // LAB, so I don't think it's worth it.
+            // Using Euclidean distance. LibQuant has better methods, but it
+            // requires conversion to LAB, so I don't think it's worth it.
             int distance =
-              pow(color.r - image_buffer[pixel_start + 0], 2) +
-              pow(color.g - image_buffer[pixel_start + 1], 2) +
-              pow(color.b - image_buffer[pixel_start + 2], 2);
+                pow(color.r - pixel.r, 2) + pow(color.g - pixel.g, 2) + pow(color.b - pixel.b, 2);
 
             if (distance < smallest_distance) {
               winning_index = color_index;
@@ -151,7 +140,8 @@ RawImage zx_quantize(std::string rawimage, int image_width, int image_height, fl
 
       for (int color_index = 0; color_index < 15; color_index++) {
         if (color_popularity[color_index] > highest_popularity) {
-          // Store this as the most popular pixel, and demote the current values:
+          // Store this as the most popular pixel, and demote the current
+          // values:
           third_color_index = second_color_index;
           third_highest_popularity = second_highest_popularity;
           second_color_index = first_color_index;
@@ -169,8 +159,8 @@ RawImage zx_quantize(std::string rawimage, int image_width, int image_height, fl
         }
       }
 
-      // ZX images can't mix bright and regular colours, except black which appears in both.
-      // Resolve any conflict:
+      // ZX images can't mix bright and regular colours, except black which
+      // appears in both. Resolve any conflict:
       while (1) {
         // If either colour is black, there's no conflict to resolve.
         if (first_color_index != 0 && second_color_index != 0) {
@@ -183,63 +173,44 @@ RawImage zx_quantize(std::string rawimage, int image_width, int image_height, fl
           }
         }
 
-        // If, during conflict resolving, we now have two of the same colour (because we initially
-        // selected the bright & regular version of the same colour), retry again with the third
-        // most popular colour.
+        // If, during conflict resolving, we now have two of the same colour
+        // (because we initially selected the bright & regular version of the
+        // same colour), retry again with the third most popular colour.
         if (first_color_index == second_color_index) {
           second_color_index = third_color_index;
-        } else break;
+        } else
+          break;
       }
 
       // Quantize
-      attr = liq_attr_create();
-      image = liq_image_create_rgba(attr, block, block_width, block_height, 0);
-      liq_set_max_colors(attr, 2);
-      liq_image_add_fixed_color(image, zx_colors[first_color_index]);
-      liq_image_add_fixed_color(image, zx_colors[second_color_index]);
-      liq_image_quantize(image, attr, &res);
-      liq_set_dithering_level(res, dithering);
-      liq_write_remapped_image(res, image, image8bit, size);
-      const liq_palette *pal = liq_get_palette(res);
+      liq_attr_ptr attr(liq_attr_create());
+      liq_image_ptr image(liq_image_create_rgba(attr.get(), block, block_width, block_height, 0));
+      liq_set_max_colors(attr.get(), 2);
+      liq_image_add_fixed_color(image.get(), zx_colors[first_color_index]);
+      liq_image_add_fixed_color(image.get(), zx_colors[second_color_index]);
+      auto res = liq_image_quantize(image.get(), attr.get());
+      liq_set_dithering_level(res.get(), dithering);
+      liq_write_remapped_image(res.get(), image.get(), image8bit, size);
+      auto pal = liq_get_palette(res.get());
 
-      // Turn palletted image back into an RGBA image, and write it into the full size result image.
-      for(int y = 0; y < block_height; y++) {
-        for(int x = 0; x < block_width; x++) {
+      // Turn palletted image back into an RGBA image, and write it into the
+      // full size result image.
+      for (int y = 0; y < block_height; y++) {
+        for (int x = 0; x < block_width; x++) {
           int image8BitPos = y * block_width + x;
-          int resultStartPos = ((block_start_y + y) * bytes_per_pixel * image_width) + ((block_start_x + x) * bytes_per_pixel);
-          result[resultStartPos + 0] = pal->entries[image8bit[image8BitPos]].r;
-          result[resultStartPos + 1] = pal->entries[image8bit[image8BitPos]].g;
-          result[resultStartPos + 2] = pal->entries[image8bit[image8BitPos]].b;
-          result[resultStartPos + 3] = pal->entries[image8bit[image8BitPos]].a;
+          int resultStartPos = ((block_start_y + y) * image_width) + (block_start_x + x);
+          result[resultStartPos] = pal->entries[image8bit[image8BitPos]];
         }
       }
-
-      liq_result_destroy(res);
-      liq_image_destroy(image);
-      liq_attr_destroy(attr);
     }
   }
 
-  free(image8bit);
-  return {
-    val(typed_memory_view(image_width*image_height*4, result)),
-    image_width,
-    image_height
-  };
-}
-
-void free_result() {
-  free(result);
+  return Uint8ClampedArray.new_(
+      typed_memory_view(result.size() * sizeof(liq_color), (const uint8_t*)result.data()));
 }
 
 EMSCRIPTEN_BINDINGS(my_module) {
-  class_<RawImage>("RawImage")
-    .property("buffer", &RawImage::buffer)
-    .property("width", &RawImage::width)
-    .property("height", &RawImage::height);
-
   function("quantize", &quantize);
   function("zx_quantize", &zx_quantize);
   function("version", &version);
-  function("free_result", &free_result);
 }

codecs/imagequant/imagequant.d.ts

@@ -1,15 +1,6 @@
-interface RawImage {
-  buffer: Uint8Array;
-  width: number;
-  height: number;
-}
-
 interface QuantizerModule extends EmscriptenWasm.Module {
-  quantize(data: BufferSource, width: number, height: number, numColors: number, dither: number): RawImage;
-  zx_quantize(data: BufferSource, width: number, height: number, dither: number): RawImage;
-  free_result(): void;
+  quantize(data: BufferSource, width: number, height: number, numColors: number, dither: number): Uint8ClampedArray;
+  zx_quantize(data: BufferSource, width: number, height: number, dither: number): Uint8ClampedArray;
 }
 
 export default function(opts: EmscriptenWasm.ModuleOpts): QuantizerModule;
-
-

codecs/imagequant/package.json

@@ -1,13 +1,6 @@
 {
   "name": "imagequant",
   "scripts": {
-    "install": "napa",
-    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten ./build.sh"
-  },
-  "napa": {
-    "libimagequant": "ImageOptim/libimagequant#2.12.1"
-  },
-  "devDependencies": {
-    "napa": "^3.0.0"
+    "build": "../build-cpp.sh"
   }
 }

codecs/mozjpeg_enc/LICENSE.codec.md

@@ -0,0 +1,132 @@
+libjpeg-turbo Licenses
+======================
+
+libjpeg-turbo is covered by three compatible BSD-style open source licenses:
+
+- The IJG (Independent JPEG Group) License, which is listed in
+  [README.ijg](README.ijg)
+
+  This license applies to the libjpeg API library and associated programs
+  (any code inherited from libjpeg, and any modifications to that code.)
+
+- The Modified (3-clause) BSD License, which is listed below
+
+  This license covers the TurboJPEG API library and associated programs, as
+  well as the build system.
+
+- The [zlib License](https://opensource.org/licenses/Zlib)
+
+  This license is a subset of the other two, and it covers the libjpeg-turbo
+  SIMD extensions.
+
+
+Complying with the libjpeg-turbo Licenses
+=========================================
+
+This section provides a roll-up of the libjpeg-turbo licensing terms, to the
+best of our understanding.
+
+1.  If you are distributing a modified version of the libjpeg-turbo source,
+    then:
+
+    1.  You cannot alter or remove any existing copyright or license notices
+        from the source.
+
+        **Origin**
+        - Clause 1 of the IJG License
+        - Clause 1 of the Modified BSD License
+        - Clauses 1 and 3 of the zlib License
+
+    2.  You must add your own copyright notice to the header of each source
+        file you modified, so others can tell that you modified that file (if
+        there is not an existing copyright header in that file, then you can
+        simply add a notice stating that you modified the file.)
+
+        **Origin**
+        - Clause 1 of the IJG License
+        - Clause 2 of the zlib License
+
+    3.  You must include the IJG README file, and you must not alter any of the
+        copyright or license text in that file.
+
+        **Origin**
+        - Clause 1 of the IJG License
+
+2.  If you are distributing only libjpeg-turbo binaries without the source, or
+    if you are distributing an application that statically links with
+    libjpeg-turbo, then:
+
+    1.  Your product documentation must include a message stating:
+
+        This software is based in part on the work of the Independent JPEG
+        Group.
+
+        **Origin**
+        - Clause 2 of the IJG license
+
+    2.  If your binary distribution includes or uses the TurboJPEG API, then
+        your product documentation must include the text of the Modified BSD
+        License (see below.)
+
+        **Origin**
+        - Clause 2 of the Modified BSD License
+
+3.  You cannot use the name of the IJG or The libjpeg-turbo Project or the
+    contributors thereof in advertising, publicity, etc.
+
+    **Origin**
+    - IJG License
+    - Clause 3 of the Modified BSD License
+
+4.  The IJG and The libjpeg-turbo Project do not warrant libjpeg-turbo to be
+    free of defects, nor do we accept any liability for undesirable
+    consequences resulting from your use of the software.
+
+    **Origin**
+    - IJG License
+    - Modified BSD License
+    - zlib License
+
+
+The Modified (3-clause) BSD License
+===================================
+
+Copyright (C)2009-2020 D. R. Commander.  All Rights Reserved.
+Copyright (C)2015 Viktor Szathmáry.  All Rights Reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+- Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+- Neither the name of the libjpeg-turbo Project nor the names of its
+  contributors may be used to endorse or promote products derived from this
+  software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+
+Why Three Licenses?
+===================
+
+The zlib License could have been used instead of the Modified (3-clause) BSD
+License, and since the IJG License effectively subsumes the distribution
+conditions of the zlib License, this would have effectively placed
+libjpeg-turbo binary distributions under the IJG License.  However, the IJG
+License specifically refers to the Independent JPEG Group and does not extend
+attribution and endorsement protections to other entities.  Thus, it was
+desirable to choose a license that granted us the same protections for new code
+that were granted to the IJG for code derived from their software.

codecs/mozjpeg_enc/Makefile

@@ -0,0 +1,52 @@
+CODEC_URL := https://github.com/mozilla/mozjpeg/archive/v3.3.1.tar.gz
+CODEC_DIR := node_modules/mozjpeg
+CODEC_OUT_RELATIVE := .libs/libjpeg.a rdswitch.o
+CODEC_OUT := $(addprefix $(CODEC_DIR)/, $(CODEC_OUT_RELATIVE))
+OUT_JS := mozjpeg_enc.js
+OUT_WASM := $(OUT_JS:.js=.wasm)
+
+.PHONY: all clean
+
+all: $(OUT_JS)
+
+%.js: %.cpp $(CODEC_OUT)
+	$(CXX) \
+		-I $(CODEC_DIR) \
+		${CXXFLAGS} \
+		${LDFLAGS} \
+		--bind \
+		--closure 1 \
+		-s ALLOW_MEMORY_GROWTH=1 \
+		-s MODULARIZE=1 \
+		-s 'EXPORT_NAME="$(basename $(@F))"' \
+		-o $@ \
+		$+
+
+# This one is a bit special: there is no rule for .libs/libjpeg.a
+#  so we use libjpeg.la which implicitly builds that one instead.
+$(CODEC_DIR)/.libs/libjpeg.a: $(CODEC_DIR)/Makefile
+	$(MAKE) -C $(CODEC_DIR) libjpeg.la
+
+$(CODEC_DIR)/rdswitch.o: $(CODEC_DIR)/Makefile
+	$(MAKE) -C $(CODEC_DIR) rdswitch.o
+
+$(CODEC_DIR)/Makefile: $(CODEC_DIR)/configure
+	cd $(CODEC_DIR) && ./configure \
+		--disable-shared \
+		--without-turbojpeg \
+		--without-simd \
+		--without-arith-enc \
+		--without-arith-dec
+
+$(CODEC_DIR)/configure: $(CODEC_DIR)/configure.ac
+	cd $(CODEC_DIR) && autoreconf -iv
+
+$(CODEC_DIR)/configure.ac: $(CODEC_DIR)
+
+$(CODEC_DIR):
+	mkdir -p $@
+	curl -sL $(CODEC_URL) | tar xz --strip 1 -C $@
+
+clean:
+	$(RM) $(OUT_JS) $(OUT_WASM)
+	$(MAKE) -C $(CODEC_DIR) clean

codecs/mozjpeg_enc/README.md

@@ -2,6 +2,7 @@
 
 - Source: <https://github.com/mozilla/mozjpeg>
 - Version: v3.3.1
+- License: BSD
 
 ## Dependencies
 
@@ -17,10 +18,6 @@ See `example.html`
 
 Returns the version of MozJPEG as a number. va.b.c is encoded as 0x0a0b0c
 
-### `void free_result()`
-
-Frees the result created by `encode()`.
-
 ### `Uint8Array encode(std::string image_in, int image_width, int image_height, MozJpegOptions opts)`
 
 Encodes the given image with given dimension to JPEG. Options looks like this:

codecs/mozjpeg_enc/build.sh

@@ -1,53 +0,0 @@
-#!/bin/bash
-
-set -e
-
-export OPTIMIZE="-Os"
-export LDFLAGS="${OPTIMIZE}"
-export CFLAGS="${OPTIMIZE}"
-export CPPFLAGS="${OPTIMIZE}"
-
-apt-get update
-apt-get install -qqy autoconf libtool libpng-dev pkg-config
-
-echo "============================================="
-echo "Compiling mozjpeg"
-echo "============================================="
-(
-  cd node_modules/mozjpeg
-  autoreconf -fiv
-  emconfigure ./configure --without-simd
-  emmake make libjpeg.la
-)
-echo "============================================="
-echo "Compiling mozjpeg done"
-echo "============================================="
-
-echo "============================================="
-echo "Compiling wasm bindings"
-echo "============================================="
-(
-  emcc \
-    --bind \
-    ${OPTIMIZE} \
-    -s WASM=1 \
-    -s ALLOW_MEMORY_GROWTH=1 \
-    -s MODULARIZE=1 \
-    -s 'EXPORT_NAME="mozjpeg_enc"' \
-    -I node_modules/mozjpeg \
-    -o ./mozjpeg_enc.js \
-    -Wno-deprecated-register \
-    -Wno-writable-strings \
-    node_modules/mozjpeg/rdswitch.c \
-    -x c++ -std=c++11 \
-    mozjpeg_enc.cpp \
-    node_modules/mozjpeg/.libs/libjpeg.a
-)
-echo "============================================="
-echo "Compiling wasm bindings done"
-echo "============================================="
-
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
-echo "Did you update your docker image?"
-echo "Run \`docker pull trzeci/emscripten\`"
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/mozjpeg_enc/mozjpeg_enc.cpp

@@ -1,18 +1,22 @@
 #include <emscripten/bind.h>
 #include <emscripten/val.h>
-#include <stdlib.h>
 #include <inttypes.h>
-#include <stdio.h>
 #include <setjmp.h>
+#include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include "config.h"
 #include "jpeglib.h"
+
+extern "C" {
 #include "cdjpeg.h"
+}
 
 using namespace emscripten;
 
-// MozJPEG doesn’t expose a numeric version, so I have to do some fun C macro hackery to turn it
-// into a string. More details here: https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html
+// MozJPEG doesn’t expose a numeric version, so I have to do some fun C macro
+// hackery to turn it into a string. More details here:
+// https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html
 #define xstr(s) str(s)
 #define str(s) #s
 
@@ -39,8 +43,8 @@ int version() {
   char buffer[] = xstr(MOZJPEG_VERSION);
   int version = 0;
   int last_index = 0;
-  for(int i = 0; i < strlen(buffer); i++) {
-    if(buffer[i] == '.') {
+  for (int i = 0; i < strlen(buffer); i++) {
+    if (buffer[i] == '.') {
       buffer[i] = '\0';
       version = version << 8 | atoi(&buffer[last_index]);
       buffer[i] = '.';
@@ -51,16 +55,16 @@ int version() {
   return version;
 }
 
-uint8_t* last_result;
-struct jpeg_compress_struct cinfo;
+thread_local const val Uint8Array = val::global("Uint8Array");
 
 val encode(std::string image_in, int image_width, int image_height, MozJpegOptions opts) {
-  uint8_t* image_buffer = (uint8_t*) image_in.c_str();
+  uint8_t* image_buffer = (uint8_t*)image_in.c_str();
 
   // The code below is basically the `write_JPEG_file` function from
   // https://github.com/mozilla/mozjpeg/blob/master/example.c
   // I just write to memory instead of a file.
 
+  /* Step 1: allocate and initialize JPEG compression object */
 
   /* This struct contains the JPEG compression parameters and pointers to
    * working space (which is allocated as needed by the JPEG library).
@@ -68,6 +72,7 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
    * compression/decompression processes, in existence at once.  We refer
    * to any one struct (and its associated working data) as a "JPEG object".
    */
+  jpeg_compress_struct cinfo;
   /* This struct represents a JPEG error handler.  It is declared separately
    * because applications often want to supply a specialized error handler
    * (see the second half of this file for an example).  But here we just
@@ -76,15 +81,7 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
    * Note that this struct must live as long as the main JPEG parameter
    * struct, to avoid dangling-pointer problems.
    */
-  struct jpeg_error_mgr jerr;
-  /* More stuff */
-  JSAMPROW row_pointer[1];      /* pointer to JSAMPLE row[s] */
-  int row_stride;               /* physical row width in image buffer */
-  uint8_t* output;
-  unsigned long size;
-
-  /* Step 1: allocate and initialize JPEG compression object */
-
+  jpeg_error_mgr jerr;
   /* We have to set up the error handler first, in case the initialization
    * step fails.  (Unlikely, but it could happen if you are out of memory.)
    * This routine fills in the contents of struct jerr, and returns jerr's
@@ -106,6 +103,8 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
   //   fprintf(stderr, "can't open %s\n", filename);
   //   exit(1);
   // }
+  uint8_t* output = nullptr;
+  unsigned long size = 0;
   jpeg_mem_dest(&cinfo, &output, &size);
 
   /* Step 3: set parameters for compression */
@@ -113,17 +112,17 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
   /* First we supply a description of the input image.
    * Four fields of the cinfo struct must be filled in:
    */
-  cinfo.image_width = image_width;      /* image width and height, in pixels */
+  cinfo.image_width = image_width; /* image width and height, in pixels */
   cinfo.image_height = image_height;
-  cinfo.input_components = 4;           /* # of color components per pixel */
-  cinfo.in_color_space = JCS_EXT_RGBA;  /* colorspace of input image */
+  cinfo.input_components = 4;          /* # of color components per pixel */
+  cinfo.in_color_space = JCS_EXT_RGBA; /* colorspace of input image */
   /* Now use the library's routine to set default compression parameters.
    * (You must set at least cinfo.in_color_space before calling this,
    * since the defaults depend on the source color space.)
    */
   jpeg_set_defaults(&cinfo);
 
-  jpeg_set_colorspace(&cinfo, (J_COLOR_SPACE) opts.color_space);
+  jpeg_set_colorspace(&cinfo, (J_COLOR_SPACE)opts.color_space);
 
   if (opts.quant_table != -1) {
     jpeg_c_set_int_param(&cinfo, JINT_BASE_QUANT_TBL_IDX, opts.quant_table);
@@ -143,17 +142,17 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
   jpeg_c_set_bool_param(&cinfo, JBOOLEAN_TRELLIS_Q_OPT, opts.trellis_opt_table);
   jpeg_c_set_int_param(&cinfo, JINT_TRELLIS_NUM_LOOPS, opts.trellis_loops);
 
-  // A little hacky to build a string for this, but it means we can use set_quality_ratings which
-  // does some useful heuristic stuff.
+  // A little hacky to build a string for this, but it means we can use
+  // set_quality_ratings which does some useful heuristic stuff.
   std::string quality_str = std::to_string(opts.quality);
 
   if (opts.separate_chroma_quality && opts.color_space == JCS_YCbCr) {
     quality_str += "," + std::to_string(opts.chroma_quality);
   }
 
-  char const *pqual = quality_str.c_str();
+  char const* pqual = quality_str.c_str();
 
-  set_quality_ratings(&cinfo, (char*) pqual, opts.baseline);
+  set_quality_ratings(&cinfo, (char*)pqual, opts.baseline);
 
   if (!opts.auto_subsample && opts.color_space == JCS_YCbCr) {
     cinfo.comp_info[0].h_samp_factor = opts.chroma_subsample;
@@ -181,54 +180,54 @@ val encode(std::string image_in, int image_width, int image_height, MozJpegOptio
    * To keep things simple, we pass one scanline per call; you can pass
    * more if you wish, though.
    */
-  row_stride = image_width * 4; /* JSAMPLEs per row in image_buffer */
+  int row_stride = image_width * 4; /* JSAMPLEs per row in image_buffer */
 
   while (cinfo.next_scanline < cinfo.image_height) {
     /* jpeg_write_scanlines expects an array of pointers to scanlines.
      * Here the array is only one element long, but you could pass
      * more than one scanline at a time if that's more convenient.
      */
-    row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
-    (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
+
+    JSAMPROW row_pointer =
+        &image_buffer[cinfo.next_scanline * row_stride]; /* pointer to JSAMPLE row[s] */
+    (void)jpeg_write_scanlines(&cinfo, &row_pointer, 1);
   }
 
   /* Step 6: Finish compression */
 
   jpeg_finish_compress(&cinfo);
+
   /* Step 7: release JPEG compression object */
 
-  last_result = output;
+  auto js_result = Uint8Array.new_(typed_memory_view(size, output));
 
-  /* And we're done! */
-  return val(typed_memory_view(size, output));
-}
-
-void free_result() {
   /* This is an important step since it will release a good deal of memory. */
   jpeg_destroy_compress(&cinfo);
+  free(output);
+
+  /* And we're done! */
+  return js_result;
 }
 
 EMSCRIPTEN_BINDINGS(my_module) {
   value_object<MozJpegOptions>("MozJpegOptions")
-    .field("quality", &MozJpegOptions::quality)
-    .field("baseline", &MozJpegOptions::baseline)
-    .field("arithmetic", &MozJpegOptions::arithmetic)
-    .field("progressive", &MozJpegOptions::progressive)
-    .field("optimize_coding", &MozJpegOptions::optimize_coding)
-    .field("smoothing", &MozJpegOptions::smoothing)
-    .field("color_space", &MozJpegOptions::color_space)
-    .field("quant_table", &MozJpegOptions::quant_table)
-    .field("trellis_multipass", &MozJpegOptions::trellis_multipass)
-    .field("trellis_opt_zero", &MozJpegOptions::trellis_opt_zero)
-    .field("trellis_opt_table", &MozJpegOptions::trellis_opt_table)
-    .field("trellis_loops", &MozJpegOptions::trellis_loops)
-    .field("chroma_subsample", &MozJpegOptions::chroma_subsample)
-    .field("auto_subsample", &MozJpegOptions::auto_subsample)
-    .field("separate_chroma_quality", &MozJpegOptions::separate_chroma_quality)
-    .field("chroma_quality", &MozJpegOptions::chroma_quality)
-    ;
+      .field("quality", &MozJpegOptions::quality)
+      .field("baseline", &MozJpegOptions::baseline)
+      .field("arithmetic", &MozJpegOptions::arithmetic)
+      .field("progressive", &MozJpegOptions::progressive)
+      .field("optimize_coding", &MozJpegOptions::optimize_coding)
+      .field("smoothing", &MozJpegOptions::smoothing)
+      .field("color_space", &MozJpegOptions::color_space)
+      .field("quant_table", &MozJpegOptions::quant_table)
+      .field("trellis_multipass", &MozJpegOptions::trellis_multipass)
+      .field("trellis_opt_zero", &MozJpegOptions::trellis_opt_zero)
+      .field("trellis_opt_table", &MozJpegOptions::trellis_opt_table)
+      .field("trellis_loops", &MozJpegOptions::trellis_loops)
+      .field("chroma_subsample", &MozJpegOptions::chroma_subsample)
+      .field("auto_subsample", &MozJpegOptions::auto_subsample)
+      .field("separate_chroma_quality", &MozJpegOptions::separate_chroma_quality)
+      .field("chroma_quality", &MozJpegOptions::chroma_quality);
 
   function("version", &version);
   function("encode", &encode);
-  function("free_result", &free_result);
 }

codecs/mozjpeg_enc/mozjpeg_enc.d.ts

@@ -2,7 +2,6 @@ import { EncodeOptions } from '../../src/codecs/mozjpeg/encoder-meta';
 
 interface MozJPEGModule extends EmscriptenWasm.Module {
   encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array;
-  free_result(): void;
 }
 
 export default function(opts: EmscriptenWasm.ModuleOpts): MozJPEGModule;

codecs/mozjpeg_enc/package.json

@@ -1,13 +1,6 @@
 {
   "name": "mozjpeg_enc",
   "scripts": {
-    "install": "napa",
-    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten ./build.sh"
-  },
-  "napa": {
-    "mozjpeg": "mozilla/mozjpeg#v3.3.1"
-  },
-  "devDependencies": {
-    "napa": "^3.0.0"
+    "build": "../build-cpp.sh"
   }
 }

codecs/optipng/.gitignore

@@ -1,2 +0,0 @@
-build/
-*.o

codecs/optipng/README.md

@@ -1,26 +0,0 @@
-# OptiPNG
-
-- Source: <https://sourceforge.net/project/optipng>
-- Version: v0.7.7
-
-## Dependencies
-
-- Docker
-
-## Example
-
-See `example.html`
-
-## API
-
-### `int version()`
-
-Returns the version of optipng as a number. va.b.c is encoded as 0x0a0b0c
-
-### `ArrayBuffer compress(std::string buffer, {level})`;
-
-`compress` will re-compress the given PNG image via `buffer`. `level` is a number between 0 and 7.
-
-### `void free_result()`
-
-Frees the result created by `compress()`.

codecs/optipng/build.sh

@@ -1,87 +0,0 @@
-#!/bin/bash
-
-set -e
-
-export OPTIMIZE="-Os"
-export PREFIX="/src/build"
-export CFLAGS="${OPTIMIZE} -I${PREFIX}/include/"
-export CPPFLAGS="${OPTIMIZE} -I${PREFIX}/include/"
-export LDFLAGS="${OPTIMIZE} -L${PREFIX}/lib/"
-
-apt-get update
-apt-get install -qqy autoconf libtool
-
-echo "============================================="
-echo "Compiling zlib"
-echo "============================================="
-test -n "$SKIP_ZLIB" || (
-  cd node_modules/zlib
-  emconfigure ./configure --prefix=${PREFIX}/
-  emmake make
-  emmake make install
-)
-echo "============================================="
-echo "Compiling zlib done"
-echo "============================================="
-
-echo "============================================="
-echo "Compiling libpng"
-echo "============================================="
-test -n "$SKIP_LIBPNG" || (
-  cd node_modules/libpng
-  autoreconf -i
-  emconfigure ./configure --with-zlib-prefix=${PREFIX}/ --prefix=${PREFIX}/
-  emmake make
-  emmake make install
-)
-echo "============================================="
-echo "Compiling libpng done"
-echo "============================================="
-
-echo "============================================="
-echo "Compiling optipng"
-echo "============================================="
-(
-  emcc \
-    ${OPTIMIZE} \
-    -Wno-implicit-function-declaration \
-    -I ${PREFIX}/include \
-    -I node_modules/optipng/src/opngreduc \
-    -I node_modules/optipng/src/pngxtern \
-    -I node_modules/optipng/src/cexcept \
-    -I node_modules/optipng/src/gifread \
-    -I node_modules/optipng/src/pnmio \
-    -I node_modules/optipng/src/minitiff \
-    --std=c99 -c \
-    node_modules/optipng/src/opngreduc/*.c \
-    node_modules/optipng/src/pngxtern/*.c \
-    node_modules/optipng/src/gifread/*.c \
-    node_modules/optipng/src/minitiff/*.c \
-    node_modules/optipng/src/pnmio/*.c \
-    node_modules/optipng/src/optipng/*.c
-
-  emcc \
-    --bind \
-    ${OPTIMIZE} \
-    -s ALLOW_MEMORY_GROWTH=1 -s MODULARIZE=1 -s 'EXPORT_NAME="optipng"' \
-    -I ${PREFIX}/include \
-    -I node_modules/optipng/src/opngreduc \
-    -I node_modules/optipng/src/pngxtern \
-    -I node_modules/optipng/src/cexcept \
-    -I node_modules/optipng/src/gifread \
-    -I node_modules/optipng/src/pnmio \
-    -I node_modules/optipng/src/minitiff \
-    -o "optipng.js" \
-    --std=c++11 \
-    optipng.cpp \
-    *.o \
-    ${PREFIX}/lib/libz.so ${PREFIX}/lib/libpng.a
-)
-echo "============================================="
-echo "Compiling optipng done"
-echo "============================================="
-
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
-echo "Did you update your docker image?"
-echo "Run \`docker pull trzeci/emscripten\`"
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/optipng/example.html

@@ -1,19 +0,0 @@
-<!doctype html>
-<script src='optipng.js'></script>
-<script>
-  const Module = optipng();
-
-  Module.onRuntimeInitialized = async _ => {
-    console.log('Version:', Module.version().toString(16));
-    const image = await fetch('../example_palette.png').then(r => r.arrayBuffer());
-    const newImage = Module.compress(image, {level: 3});
-    console.log('done');
-    Module.free_result();
-
-    console.log(`Old size: ${image.byteLength}, new size: ${newImage.byteLength} (${newImage.byteLength/image.byteLength*100}%)`);
-    const blobURL = URL.createObjectURL(new Blob([newImage], {type: 'image/png'}));
-    const img = document.createElement('img');
-    img.src = blobURL;
-    document.body.appendChild(img);
-  };
-</script>

codecs/optipng/optipng.cpp

@@ -1,53 +0,0 @@
-#include "emscripten/bind.h"
-#include "emscripten/val.h"
-
-#include <stdio.h>
-
-using namespace emscripten;
-
-extern "C" int main(int argc, char *argv[]);
-
-int version() {
-  // FIXME (@surma): Haven’t found a version in optipng :(
-  return 0;
-}
-
-struct OptiPngOpts {
-  int level;
-};
-
-uint8_t* result;
-val compress(std::string png, OptiPngOpts opts) {
-  remove("input.png");
-  remove("output.png");
-  FILE* infile = fopen("input.png", "wb");
-  fwrite(png.c_str(), png.length(), 1, infile);
-  fflush(infile);
-  fclose(infile);
-
-  char optlevel[8];
-  sprintf(&optlevel[0], "-o%d", opts.level);
-  char* args[] = {"optipng", optlevel, "-out", "output.png", "input.png"};
-  main(5, args);
-
-  FILE *outfile = fopen("output.png", "rb");
-  fseek(outfile, 0, SEEK_END);
-  int fsize = ftell(outfile);
-  result = (uint8_t*) malloc(fsize);
-  fseek(outfile, 0, SEEK_SET);
-  fread(result, fsize, 1, outfile);
-  return val(typed_memory_view(fsize, result));
-}
-
-void free_result() {
-  free(result);
-}
-
-EMSCRIPTEN_BINDINGS(my_module) {
-  value_object<OptiPngOpts>("OptiPngOpts")
-    .field("level", &OptiPngOpts::level);
-
-  function("version", &version);
-  function("compress", &compress);
-  function("free_result", &free_result);
-}

codecs/optipng/optipng.d.ts

@@ -1,10 +0,0 @@
-import {EncodeOptions} from "src/codecs/optipng/encoder";
-
-export interface OptiPngModule extends EmscriptenWasm.Module {
-  compress(data: BufferSource, opts: EncodeOptions): Uint8Array;
-  free_result(): void;
-}
-
-export default function(opts: EmscriptenWasm.ModuleOpts): OptiPngModule;
-
-

codecs/optipng/package.json

@@ -1,22 +0,0 @@
-{
-  "name": "optipng",
-  "scripts": {
-    "install": "tar-dependency install && napa",
-    "build": "npm run build:wasm",
-    "build:wasm": "docker run --rm -v $(pwd):/src -e SKIP_ZLIB=\"${SKIP_ZLIB}\" -e SKIP_LIBPNG=\"${SKIP_LIBPNG}\" trzeci/emscripten ./build.sh"
-  },
-  "tarDependencies": {
-    "node_modules/optipng": {
-      "url": "https://netcologne.dl.sourceforge.net/project/optipng/OptiPNG/optipng-0.7.7/optipng-0.7.7.tar.gz",
-      "strip": 1
-    }
-  },
-  "napa": {
-    "libpng": "emscripten-ports/libpng",
-    "zlib": "emscripten-ports/zlib"
-  },
-  "dependencies": {
-    "napa": "^3.0.0",
-    "tar-dependency": "0.0.3"
-  }
-}

codecs/oxipng/.gitignore

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+/target

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+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.64"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9adff9ee0e94b926ca81b57f57f86d5545cdcb1d259e21ec9bdd95b901754c75"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.64"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f7b90ea6c632dd06fd765d44542e234d5e63d9bb917ecd64d79778a13bd79ae"
+
+[[package]]
+name = "zopfli"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4079b79464426ade2a1b0177fb0ce8396ba6b4084267407e333573c666073964"
+dependencies = [
+ "adler32",
+ "byteorder",
+ "crc",
+ "typed-arena",
+]

codecs/oxipng/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "squoosh-oxipng"
+version = "0.1.0"
+authors = ["Ingvar Stepanyan <me@rreverser.com>"]
+edition = "2018"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+oxipng = { version = "3.0.0", default-features = false }
+wasm-bindgen = "0.2.64"
+log = { version = "0.4", features = ["release_max_level_off"] }
+
+[profile.release]
+lto = true
+opt-level = "s"

codecs/oxipng/Dockerfile

@@ -0,0 +1,12 @@
+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/LICENSE.codec.md

@@ -0,0 +1,20 @@
+The MIT License (MIT)
+Copyright (c) 2016 Joshua Holmer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

codecs/oxipng/README.md

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

codecs/oxipng/package-lock.json

@@ -0,0 +1,4 @@
+{
+  "name": "oxipng",
+  "lockfileVersion": 1
+}

codecs/oxipng/package.json

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

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

@@ -0,0 +1,8 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+* @param {Uint8Array} data
+* @param {number} level
+* @returns {Uint8Array}
+*/
+export function optimise(data: Uint8Array, level: number): Uint8Array;

codecs/oxipng/pkg/squoosh_oxipng.js

@@ -0,0 +1,2 @@
+import * as wasm from "./squoosh_oxipng_bg.wasm";
+export * from "./squoosh_oxipng_bg.js";

codecs/oxipng/pkg/squoosh_oxipng_bg.d.ts

@@ -0,0 +1,8 @@
+/* tslint:disable */
+/* eslint-disable */
+export const memory: WebAssembly.Memory;
+export function optimise(a: number, b: number, c: number, d: number): void;
+export function malloc(a: number): number;
+export function free(a: number): void;
+export function __wbindgen_malloc(a: number): number;
+export function __wbindgen_free(a: number, b: number): void;

codecs/oxipng/pkg/squoosh_oxipng_bg.js

@@ -0,0 +1,60 @@
+import * as wasm from './squoosh_oxipng_bg.wasm';
+
+const lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;
+
+let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+
+cachedTextDecoder.decode();
+
+let cachegetUint8Memory0 = null;
+function getUint8Memory0() {
+    if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== wasm.memory.buffer) {
+        cachegetUint8Memory0 = new Uint8Array(wasm.memory.buffer);
+    }
+    return cachegetUint8Memory0;
+}
+
+function getStringFromWasm0(ptr, len) {
+    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
+}
+
+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.memory.buffer) {
+        cachegetInt32Memory0 = new Int32Array(wasm.memory.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) {
+    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;
+}
+
+export const __wbindgen_throw = function(arg0, arg1) {
+    throw new Error(getStringFromWasm0(arg0, arg1));
+};
+

codecs/oxipng/src/lib.rs

@@ -0,0 +1,18 @@
+mod malloc_shim;
+
+use wasm_bindgen::prelude::*;
+use oxipng::AlphaOptim;
+
+#[wasm_bindgen(catch)]
+pub fn optimise(data: &[u8], level: u8) -> Vec<u8> {
+  let mut options = oxipng::Options::from_preset(level);
+  options.alphas.insert(AlphaOptim::Black);
+  options.alphas.insert(AlphaOptim::White);
+  options.alphas.insert(AlphaOptim::Up);
+  options.alphas.insert(AlphaOptim::Down);
+  options.alphas.insert(AlphaOptim::Left);
+  options.alphas.insert(AlphaOptim::Right);
+
+  options.deflate = oxipng::Deflaters::Libdeflater;
+  oxipng::optimize_from_memory(data, &options).unwrap_throw()
+}

codecs/oxipng/src/malloc_shim.rs

@@ -0,0 +1,47 @@
+//! This is a module that provides `malloc` and `free` for `libdeflate`.
+//! These implementations are compatible with the standard signatures
+//! but use Rust allocator instead of including libc one as well.
+//!
+//! Rust allocator APIs requires passing size and alignment to the
+//! `dealloc` function. This is different from C API, which only
+//! expects a pointer in `free` and expects allocators to take care of
+//! storing any necessary information elsewhere.
+//!
+//! In order to simulate C API, we allocate a `size_and_data_ptr`
+//! of size `sizeof(usize) + size` where `size` is the requested number
+//! of bytes. Then, we store `size` at the beginning of the allocated
+//! chunk (within those `sizeof(usize)` bytes) and return
+//! `data_ptr = size_and_data_ptr + sizeof(usize)` to the calleer:
+//!
+//! [`size`][...actual data]
+//! -^------------------ `size_and_data_ptr`
+//! ---------^---------- `data_ptr`
+//!
+//! Then, in `free`, the caller gives us `data_ptr`. We can subtract
+//! `sizeof(usize)` back and get the original `size_and_data_ptr`.
+//! At this point we can read `size` back and call the Rust `dealloc`
+//! for the whole allocated chunk.
+//!
+//! I've raised an upstream issue to hopefully make this easier in
+//! future: https://github.com/ebiggers/libdeflate/issues/62
+
+use std::alloc::*;
+use std::mem::{align_of, size_of};
+
+unsafe fn layout_for(size: usize) -> Layout {
+    Layout::from_size_align_unchecked(size_of::<usize>() + size, align_of::<usize>())
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn malloc(size: usize) -> *mut u8 {
+    let size_and_data_ptr = alloc(layout_for(size));
+    *(size_and_data_ptr as *mut usize) = size;
+    size_and_data_ptr.add(size_of::<usize>())
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn free(data_ptr: *mut u8) {
+    let size_and_data_ptr = data_ptr.sub(size_of::<usize>());
+    let size = *(size_and_data_ptr as *const usize);
+    dealloc(size_and_data_ptr, layout_for(size))
+}

codecs/resize/.gitignore

@@ -0,0 +1,5 @@
+**/*.rs.bk
+target
+bin/
+pkg/README.md
+lut.inc

codecs/resize/Cargo.lock

@@ -0,0 +1,284 @@
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codecs/resize/Cargo.toml

@@ -0,0 +1,38 @@
+[package]
+name = "squoosh-resize"
+version = "0.1.0"
+authors = ["Surma <surma@surma.link>"]
+publish = false
+
+[lib]
+#crate-type = ["cdylib", "rlib"]
+crate-type = ["cdylib"]
+
+[features]
+default = ["console_error_panic_hook", "wee_alloc"]
+
+[dependencies]
+cfg-if = "0.1.2"
+wasm-bindgen = "0.2.38"
+resize = "0.3.0"
+
+# The `console_error_panic_hook` crate provides better debugging of panics by
+# logging them with `console.error`. This is great for development, but requires
+# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
+# code size when deploying.
+console_error_panic_hook = { version = "0.1.1", optional = true }
+
+# `wee_alloc` is a tiny allocator for wasm that is only ~1K in code size
+# compared to the default allocator's ~10K. It is slower than the default
+# allocator, however.
+#
+# Unfortunately, `wee_alloc` requires nightly Rust when targeting wasm for now.
+wee_alloc = { version = "0.4.2", optional = true }
+
+[dev-dependencies]
+wasm-bindgen-test = "0.2"
+
+[profile.release]
+# Tell `rustc` to optimize for small code size.
+opt-level = "s"
+lto = true

codecs/resize/LICENSE.codec.md

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 PistonDevelopers
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

codecs/resize/README.md

@@ -0,0 +1,5 @@
+# Resize
+
+- Source: <https://github.com/PistonDevelopers/resize>
+- Version: v0.3.0
+- License: MIT

codecs/resize/build.rs

@@ -0,0 +1,23 @@
+include!("./src/srgb.rs");
+
+use std::io::Write;
+
+fn main() -> std::io::Result<()> {
+    let mut srgb_to_linear_lut = String::from("static SRGB_TO_LINEAR_LUT: [f32; 256] = [");
+    let mut linear_to_srgb_lut = String::from("static LINEAR_TO_SRGB_LUT: [f32; 256] = [");
+    for i in 0..256 {
+        srgb_to_linear_lut.push_str(&format!("{0:.7}", srgb_to_linear((i as f32) / 255.0)));
+        srgb_to_linear_lut.push_str(",");
+        linear_to_srgb_lut.push_str(&format!("{0:.7}", linear_to_srgb((i as f32) / 255.0)));
+        linear_to_srgb_lut.push_str(",");
+    }
+    srgb_to_linear_lut.pop().unwrap();
+    linear_to_srgb_lut.pop().unwrap();
+    srgb_to_linear_lut.push_str("];");
+    linear_to_srgb_lut.push_str("];");
+
+    let mut file = std::fs::File::create("src/lut.inc")?;
+    file.write_all(srgb_to_linear_lut.as_bytes())?;
+    file.write_all(linear_to_srgb_lut.as_bytes())?;
+    Ok(())
+}

codecs/resize/package-lock.json

@@ -0,0 +1,4 @@
+{
+  "name": "resize",
+  "lockfileVersion": 1
+}

codecs/resize/package.json

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

codecs/resize/pkg/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "squoosh-resize",
+  "collaborators": [
+    "Surma <surma@surma.link>"
+  ],
+  "version": "0.1.0",
+  "files": [
+    "squoosh_resize_bg.wasm",
+    "squoosh_resize.js",
+    "squoosh_resize.d.ts"
+  ],
+  "module": "squoosh_resize.js",
+  "types": "squoosh_resize.d.ts",
+  "sideEffects": false
+}

codecs/resize/pkg/squoosh_resize.d.ts

@@ -0,0 +1,14 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+* @param {Uint8Array} input_image
+* @param {number} input_width
+* @param {number} input_height
+* @param {number} output_width
+* @param {number} output_height
+* @param {number} typ_idx
+* @param {boolean} premultiply
+* @param {boolean} color_space_conversion
+* @returns {Uint8Array}
+*/
+export function resize(input_image: Uint8Array, input_width: number, input_height: number, output_width: number, output_height: number, typ_idx: number, premultiply: boolean, color_space_conversion: boolean): Uint8Array;

codecs/resize/pkg/squoosh_resize.js

@@ -0,0 +1,2 @@
+import * as wasm from "./squoosh_resize_bg.wasm";
+export * from "./squoosh_resize_bg.js";