LibSquoosh: add smoke test

Use pathify to calculate absolute paths for cross-platform compatibility

.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

.editorconfig

@@ -7,3 +7,6 @@ end_of_line = lf
 charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
+
+[Makefile]
+indent_style = tab

.gitattributes

@@ -0,0 +1,2 @@
+/codecs/**/*.js linguist-generated=true
+/codecs/*/pkg*/*.d.ts linguist-generated=true

.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.

.github/workflows/node.js.yml

@@ -0,0 +1,22 @@
+name: Node.js CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+
+    steps:
+    - uses: actions/checkout@v2
+    - id: nvmrc
+      uses: browniebroke/read-nvmrc-action@v1
+    - uses: actions/setup-node@v1
+      with:
+        node-version: '${{ steps.nvmrc.outputs.node_version }}'
+    - run: npm ci
+    - run: npm run build

.gitignore

@@ -1,6 +1,12 @@
+.tmp
 node_modules
-/build
-/*.log
 *.scss.d.ts
 *.css.d.ts
+build
 *.o
+.DS_Store
+
+# Auto-generated by lib/feature-plugin.js
+src/features-worker/index.ts
+src/client/lazy-app/worker-bridge/meta.ts
+src/client/lazy-app/feature-meta/index.ts

.nvmrc

@@ -0,0 +1 @@
+14.15.1

.prettierignore

@@ -0,0 +1,12 @@
+codecs
+.tmp
+node_modules
+*.scss.d.ts
+*.css.d.ts
+build
+*.o
+
+# Auto-generated by lib/feature-plugin.js
+src/features-worker/index.ts
+src/client/lazy-app/worker-bridge/meta.ts
+src/client/lazy-app/feature-meta/index.ts

.prettierrc.json

@@ -0,0 +1,4 @@
+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}

.travis.yml

@@ -1,5 +0,0 @@
-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

README.md

@@ -1,5 +1,42 @@
-# 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 reduces image sizes through numerous formats.
 
+# API & CLI
+
+Squoosh has [an API](https://github.com/GoogleChromeLabs/squoosh/tree/dev/libsquoosh) and [a CLI](https://github.com/GoogleChromeLabs/squoosh/tree/dev/cli) to compress many images at once.
+
+# Privacy
+
+Squoosh does not send your image to a server. All image compression processes locally.
+
+However, Squoosh utilizes Google Analytics to collect the following:
+
+- [Basic visitor data](https://support.google.com/analytics/answer/6004245?ref_topic=2919631).
+- The before and after image size value.
+- If Squoosh PWA, the type of Squoosh installation.
+- If Squoosh PWA, the installation time and date.
+
+# Developing
+
+To develop for Squoosh:
+
+1. Clone the repository
+1. To install node packages, run:
+   ```sh
+   npm install
+   ```
+1. Then build the app by running:
+   ```sh
+   npm run build
+   ```
+1. After building, start the development server by running:
+   ```sh
+   npm run dev
+   ```
+
+# Contributing
+
+Squoosh is an open-source project that appreciates all community involvement. To contribute to the project, follow the [contribute guide](/CONTRIBUTING.md).
+
+[squoosh]: https://squoosh.app

cli/.gitignore

@@ -0,0 +1,3 @@
+node_modules
+build
+.DS_Store

cli/.npmignore

@@ -0,0 +1 @@
+node_modules

cli/README.md

@@ -0,0 +1,59 @@
+# Squoosh CLI
+
+Squoosh CLI is an _experimental_ way to run all the codecs you know from the [Squoosh] web app on your command line using WebAssembly. The Squoosh CLI uses a worker pool to parallelize processing images. This way you can apply the same codec to many images at once.
+
+Squoosh CLI is currently not the fastest image compression tool in town and doesn’t aim to be. It is, however, fast enough to compress many images sufficiently quick at once.
+
+## Installation
+
+The Squoosh CLI can be used straight from the command line without installing using `npx`:
+
+```
+$ npx @squoosh/cli <options...>
+```
+
+Of course, you can also install the Squoosh CLI:
+
+```
+$ npm i -g @squoosh/cli
+$ squoosh-cli <options...>
+```
+
+## Usage
+
+```
+Usage: squoosh-cli [options] <files...>
+
+Options:
+  -V, --version                                          output the version number
+  -d, --output-dir <dir>                                 Output directory (default: ".")
+  -s, --suffix <suffix>                                  Append suffix to output files (default: "")
+  --max-optimizer-rounds <rounds>                        Maximum number of compressions to use for auto optimizations (default: "6")
+  --optimizer-butteraugli-target <butteraugli distance>  Target Butteraugli distance for auto optimizer (default: "1.4")
+  --resize [config]                                      Resize the image before compressing
+  --quant [config]                                       Reduce the number of colors used (aka. paletting)
+  --rotate [config]                                      Rotate image
+  --mozjpeg [config]                                     Use MozJPEG to generate a .jpg file with the given configuration
+  --webp [config]                                        Use WebP to generate a .webp file with the given configuration
+  --avif [config]                                        Use AVIF to generate a .avif file with the given configuration
+  --jxl [config]                                         Use JPEG-XL to generate a .jxl file with the given configuration
+  --wp2 [config]                                         Use WebP2 to generate a .wp2 file with the given configuration
+  --oxipng [config]                                      Use OxiPNG to generate a .png file with the given configuration
+  -h, --help                                             display help for command
+```
+
+The default values for each `config` option can be found in the [`codecs.ts`][codecs.ts] file under `defaultEncoderOptions`. Every unspecified value will use the default value specified here. _Better documentation is needed here._
+
+## Auto optimizer
+
+Squoosh CLI has an _experimental_ auto optimizer that compresses an image as much as possible, trying to hit a specific [Butteraugli] target value. The higher the Butteraugli target value, the more artifacts can be introduced.
+
+You can make use of the auto optimizer by using “auto” as the config object.
+
+```
+$ npx @squoosh/cli --wp2 auto test.png
+```
+
+[squoosh]: https://squoosh.app
+[codecs.ts]: https://github.com/GoogleChromeLabs/squoosh/blob/dev/libsquoosh/src/codecs.ts
+[butteraugli]: https://github.com/google/butteraugli

cli/package-lock.json

@@ -0,0 +1,613 @@
+{
+  "name": "@squoosh/cli",
+  "version": "0.7.2",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@squoosh/cli",
+      "version": "0.7.2",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@squoosh/lib": "^0.4.0",
+        "commander": "^7.2.0",
+        "json5": "^2.2.0",
+        "kleur": "^4.1.4",
+        "ora": "^5.4.0"
+      },
+      "bin": {
+        "cli": "src/index.js",
+        "squoosh-cli": "src/index.js"
+      },
+      "engines": {
+        "node": " ^12.20.2 || ^14.13.1 || ^16.0.0 "
+      }
+    },
+    "node_modules/@squoosh/lib": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/@squoosh/lib/-/lib-0.4.0.tgz",
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+      "dependencies": {
+        "wasm-feature-detect": "^1.2.11",
+        "web-streams-polyfill": "^3.0.3"
+      },
+      "engines": {
+        "node": " ^12.5.0 || ^14.0.0 || ^16.0.0 "
+      }
+    },
+    "node_modules/ansi-regex": {
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+      "engines": {
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+      }
+    },
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+      },
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+}

cli/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "@squoosh/cli",
+  "version": "0.7.2",
+  "description": "A CLI for Squoosh",
+  "public": true,
+  "type": "module",
+  "homepage": "https://github.com/GoogleChromeLabs/squoosh",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/GoogleChromeLabs/squoosh.git"
+  },
+  "bin": {
+    "squoosh-cli": "src/index.js",
+    "@squoosh/cli": "src/index.js"
+  },
+  "files": [
+    "/src/index.js"
+  ],
+  "keywords": [],
+  "author": "Google Chrome Developers <chromium-dev@google.com>",
+  "license": "Apache-2.0",
+  "engines": {
+    "node": " ^12.20.2 || ^14.13.1 || ^16.0.0 "
+  },
+  "dependencies": {
+    "@squoosh/lib": "^0.4.0",
+    "commander": "^7.2.0",
+    "json5": "^2.2.0",
+    "kleur": "^4.1.4",
+    "ora": "^5.4.0"
+  }
+}

cli/src/index.js

@@ -0,0 +1,232 @@
+#!/usr/bin/env node
+
+import { program } from 'commander/esm.mjs';
+import JSON5 from 'json5';
+import path from 'path';
+import { promises as fsp } from 'fs';
+import ora from 'ora';
+import kleur from 'kleur';
+
+import { ImagePool, preprocessors, encoders } from '@squoosh/lib';
+
+function clamp(v, min, max) {
+  if (v < min) return min;
+  if (v > max) return max;
+  return v;
+}
+
+const suffix = ['B', 'KB', 'MB'];
+function prettyPrintSize(size) {
+  const base = Math.floor(Math.log2(size) / 10);
+  const index = clamp(base, 0, 2);
+  return (size / 2 ** (10 * index)).toFixed(2) + suffix[index];
+}
+
+function progressTracker(results) {
+  const spinner = ora();
+  const tracker = {};
+  tracker.spinner = spinner;
+  tracker.progressOffset = 0;
+  tracker.totalOffset = 0;
+  let status = '';
+  tracker.setStatus = (text) => {
+    status = text || '';
+    update();
+  };
+  let progress = '';
+  tracker.setProgress = (done, total) => {
+    spinner.prefixText = kleur.dim(`${done}/${total}`);
+    const completeness =
+      (tracker.progressOffset + done) / (tracker.totalOffset + total);
+    progress = kleur.cyan(
+      `▐${'▨'.repeat((completeness * 10) | 0).padEnd(10, '╌')}▌ `,
+    );
+    update();
+  };
+  function update() {
+    spinner.text = progress + kleur.bold(status) + getResultsText();
+  }
+  tracker.finish = (text) => {
+    spinner.succeed(kleur.bold(text) + getResultsText());
+  };
+  function getResultsText() {
+    let out = '';
+    for (const result of results.values()) {
+      out += `\n ${kleur.cyan(result.file)}: ${prettyPrintSize(result.size)}`;
+      for (const { outputFile, size: outputSize, infoText } of result.outputs) {
+        out += `\n  ${kleur.dim('└')} ${kleur.cyan(
+          outputFile.padEnd(5),
+        )} → ${prettyPrintSize(outputSize)}`;
+        const percent = ((outputSize / result.size) * 100).toPrecision(3);
+        out += ` (${kleur[outputSize > result.size ? 'red' : 'green'](
+          percent + '%',
+        )})`;
+        if (infoText) out += kleur.yellow(infoText);
+      }
+    }
+    return out || '\n';
+  }
+  spinner.start();
+  return tracker;
+}
+
+async function getInputFiles(paths) {
+  const validFiles = [];
+
+  for (const inputPath of paths) {
+    const files = (await fsp.lstat(inputPath)).isDirectory()
+      ? (await fsp.readdir(inputPath, {withFileTypes: true})).filter(dirent => dirent.isFile()).map(dirent => path.join(inputPath, dirent.name))
+      : [inputPath];
+    for (const file of files) {
+      try {
+        await fsp.stat(file);
+      } catch (err) {
+        if (err.code === 'ENOENT') {
+          console.warn(
+            `Warning: Input file does not exist: ${path.resolve(file)}`,
+          );
+          continue;
+        } else {
+          throw err;
+        }
+      }
+
+      validFiles.push(file);
+    }
+  }
+
+  return validFiles;
+}
+
+async function processFiles(files) {
+  files = await getInputFiles(files);
+
+  const imagePool = new ImagePool();
+
+  const results = new Map();
+  const progress = progressTracker(results);
+
+  progress.setStatus('Decoding...');
+  progress.totalOffset = files.length;
+  progress.setProgress(0, files.length);
+
+  // Create output directory
+  await fsp.mkdir(program.opts().outputDir, { recursive: true });
+
+  let decoded = 0;
+  let decodedFiles = await Promise.all(
+    files.map(async (file) => {
+      const image = imagePool.ingestImage(file);
+      await image.decoded;
+      results.set(image, {
+        file,
+        size: (await image.decoded).size,
+        outputs: [],
+      });
+      progress.setProgress(++decoded, files.length);
+      return image;
+    }),
+  );
+
+  const preprocessOptions = {};
+
+  for (const preprocessorName of Object.keys(preprocessors)) {
+    if (!program.opts()[preprocessorName]) {
+      continue;
+    }
+    preprocessOptions[preprocessorName] = JSON5.parse(
+      program.opts()[preprocessorName],
+    );
+  }
+
+  for (const image of decodedFiles) {
+    image.preprocess(preprocessOptions);
+  }
+
+  await Promise.all(decodedFiles.map((image) => image.decoded));
+
+  progress.progressOffset = decoded;
+  progress.setStatus(
+    'Encoding ' + kleur.dim(`(${imagePool.workerPool.numWorkers} threads)`),
+  );
+  progress.setProgress(0, files.length);
+
+  const jobs = [];
+  let jobsStarted = 0;
+  let jobsFinished = 0;
+  for (const image of decodedFiles) {
+    const originalFile = results.get(image).file;
+
+    const encodeOptions = {
+      optimizerButteraugliTarget: Number(
+        program.opts().optimizerButteraugliTarget,
+      ),
+      maxOptimizerRounds: Number(program.opts().maxOptimizerRounds),
+    };
+    for (const encName of Object.keys(encoders)) {
+      if (!program.opts()[encName]) {
+        continue;
+      }
+      const encParam = program.opts()[encName];
+      const encConfig =
+        encParam.toLowerCase() === 'auto' ? 'auto' : JSON5.parse(encParam);
+      encodeOptions[encName] = encConfig;
+    }
+    jobsStarted++;
+    const job = image.encode(encodeOptions).then(async () => {
+      jobsFinished++;
+      const outputPath = path.join(
+        program.opts().outputDir,
+        path.basename(originalFile, path.extname(originalFile)) +
+        program.opts().suffix
+      );
+      for (const output of Object.values(image.encodedWith)) {
+        const outputFile = `${outputPath}.${(await output).extension}`;
+        await fsp.writeFile(outputFile, (await output).binary);
+        results
+          .get(image)
+          .outputs.push(Object.assign(await output, { outputFile }));
+      }
+      progress.setProgress(jobsFinished, jobsStarted);
+    });
+    jobs.push(job);
+  }
+
+  // update the progress to account for multi-format
+  progress.setProgress(jobsFinished, jobsStarted);
+  // Wait for all jobs to finish
+  await Promise.all(jobs);
+  await imagePool.close();
+  progress.finish('Squoosh results:');
+}
+
+program
+  .name('squoosh-cli')
+  .arguments('<files...>')
+  .option('-d, --output-dir <dir>', 'Output directory', '.')
+  .option('-s, --suffix <suffix>', 'Append suffix to output files', '')
+  .option(
+    '--max-optimizer-rounds <rounds>',
+    'Maximum number of compressions to use for auto optimizations',
+    '6',
+  )
+  .option(
+    '--optimizer-butteraugli-target <butteraugli distance>',
+    'Target Butteraugli distance for auto optimizer',
+    '1.4',
+  )
+  .action(processFiles);
+
+// Create a CLI option for each supported preprocessor
+for (const [key, value] of Object.entries(preprocessors)) {
+  program.option(`--${key} [config]`, value.description);
+}
+// Create a CLI option for each supported encoder
+for (const [key, value] of Object.entries(encoders)) {
+  program.option(
+    `--${key} [config]`,
+    `Use ${value.name} to generate a .${value.extension} file with the given configuration`,
+  );
+}
+
+program.parse(process.argv);

client-tsconfig.json

@@ -0,0 +1,19 @@
+{
+  "extends": "./generic-tsconfig.json",
+  "compilerOptions": {
+    "lib": ["esnext", "dom", "dom.iterable"],
+    "types": []
+  },
+  "include": [
+    "src/features/**/client/**/*",
+    "src/features/**/shared/**/*",
+    "src/features/client-utils/**/*",
+    "src/shared/**/*",
+    "src/client/**/*",
+    // Not really clean, but we need these to access the type of the functions
+    // for comlink
+    "src/features/**/worker/**/*",
+    "src/features-worker/**/*",
+    "src/features/worker-utils/**/*"
+  ]
+}

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 +1,95 @@
+# libavif and libaom versions are from
+# https://docs.google.com/document/d/1wEEA5rRU7wT54k41u3qyZIZHDCJArIMzLuzsrLAwaK8/edit
+CODEC_URL = https://github.com/AOMediaCodec/libavif/archive/1c39e772c2c0d687691dd4b589a12c323f5f767d.tar.gz
+CODEC_PACKAGE = node_modules/libavif.tar.gz
+
+LIBAOM_URL = https://aomedia.googlesource.com/aom/+archive/v3.1.0.tar.gz
+LIBAOM_PACKAGE = node_modules/libaom.tar.gz
+
+export CODEC_DIR = node_modules/libavif
+export BUILD_DIR = node_modules/build
+export LIBAOM_DIR = node_modules/libaom
+
+override CFLAGS += "-Wno-unused-macros"
+export
+
+OUT_ENC_JS = enc/avif_enc.js
+OUT_NODE_ENC_JS = enc/avif_node_enc.js
+OUT_ENC_MT_JS = enc/avif_enc_mt.js
+OUT_NODE_ENC_MT_JS = enc/avif_node_enc_mt.js
+OUT_DEC_JS = dec/avif_dec.js
+OUT_NODE_DEC_JS = dec/avif_node_dec.js
+
+OUT_ENC_CPP = enc/avif_enc.cpp
+OUT_DEC_CPP = dec/avif_dec.cpp
+ENVIRONMENT = worker
+
+HELPER_MAKEFLAGS := -f helper.Makefile
+
+.PHONY: all clean
+
+all: $(OUT_ENC_JS) $(OUT_DEC_JS) $(OUT_ENC_MT_JS) $(OUT_NODE_ENC_JS) $(OUT_NODE_ENC_MT_JS) $(OUT_NODE_DEC_JS)
+
+$(OUT_NODE_ENC_JS) $(OUT_NODE_ENC_MT_JS): ENVIRONMENT=node
+$(OUT_NODE_ENC_JS) $(OUT_ENC_JS): $(OUT_ENC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLists.txt
+	$(MAKE) \
+		$(HELPER_MAKEFLAGS) \
+		OUT_JS=$@ \
+		OUT_CPP=$< \
+		LIBAOM_FLAGS="\
+			-DCONFIG_AV1_DECODER=0 \
+			-DCONFIG_MULTITHREAD=0 \
+			-DCONFIG_AV1_HIGHBITDEPTH=0 \
+		" \
+		ENVIRONMENT=$(ENVIRONMENT) \
+		LIBAVIF_FLAGS="-DAVIF_CODEC_AOM_DECODE=0"
+
+$(OUT_ENC_MT_JS) $(OUT_NODE_ENC_MT_JS): $(OUT_ENC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLists.txt
+	$(MAKE) \
+		$(HELPER_MAKEFLAGS) \
+		OUT_JS=$@ \
+		OUT_CPP=$< \
+		LIBAOM_FLAGS="\
+			-DCONFIG_AV1_DECODER=0 \
+			-DCONFIG_AV1_HIGHBITDEPTH=0 \
+		" \
+		ENVIRONMENT=$(ENVIRONMENT) \
+		LIBAVIF_FLAGS="-DAVIF_CODEC_AOM_DECODE=0" \
+		OUT_FLAGS="-pthread"
+
+$(OUT_NODE_DEC_JS): ENVIRONMENT=node
+$(OUT_NODE_DEC_JS) $(OUT_DEC_JS): $(OUT_DEC_CPP) $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_DIR)/CMakeLists.txt
+	$(MAKE) \
+		$(HELPER_MAKEFLAGS) \
+		OUT_JS=$@ \
+		OUT_CPP=$< \
+		LIBAOM_FLAGS="\
+			-DCONFIG_AV1_ENCODER=0 \
+			-DCONFIG_MULTITHREAD=0 \
+		" \
+		ENVIRONMENT=$(ENVIRONMENT) \
+		LIBAVIF_FLAGS="-DAVIF_CODEC_AOM_ENCODE=0"
+
+$(CODEC_PACKAGE):
+	mkdir -p $(@D)
+	curl -sL $(CODEC_URL) -o $@
+
+$(LIBAOM_PACKAGE):
+	mkdir -p $(@D)
+	curl -sL $(LIBAOM_URL) -o $@
+
+$(CODEC_DIR)/CMakeLists.txt: $(CODEC_PACKAGE)
+	mkdir -p $(@D)
+	tar xzm --strip 1 -C $(@D) -f $(CODEC_PACKAGE)
+
+$(LIBAOM_DIR)/CMakeLists.txt: $(LIBAOM_PACKAGE)
+	mkdir -p $(@D)
+	tar xzm -C $(@D) -f $(LIBAOM_PACKAGE)
+
+clean:
+	$(MAKE) $(HELPER_MAKEFLAGS) OUT_JS=$(OUT_ENC_JS) clean
+	$(MAKE) $(HELPER_MAKEFLAGS) OUT_JS=$(OUT_ENC_MT_JS) clean
+	$(MAKE) $(HELPER_MAKEFLAGS) OUT_JS=$(OUT_ENC_NODE_JS) clean
+	$(MAKE) $(HELPER_MAKEFLAGS) OUT_JS=$(OUT_ENC_NODE_MT_JS) clean
+	$(MAKE) $(HELPER_MAKEFLAGS) OUT_JS=$(OUT_DEC_JS) clean
+	$(MAKE) $(HELPER_MAKEFLAGS) OUT_JS=$(OUT_DEV_NODE_JS) 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 +1,48 @@
+#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) {
+  avifImage* image = avifImageCreateEmpty();
+  avifDecoder* decoder = avifDecoderCreate();
+  avifResult decodeResult =
+      avifDecoderReadMemory(decoder, image, (uint8_t*)avifimage.c_str(), avifimage.length());
+  // 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 +1,7 @@
+export interface AVIFModule extends EmscriptenWasm.Module {
+  decode(data: BufferSource): ImageData | null;
+}
+
+declare var moduleFactory: EmscriptenWasm.ModuleFactory<AVIFModule>;
+
+export default moduleFactory;

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 +1,146 @@
+#include <emscripten/bind.h>
+#include <emscripten/threading.h>
+#include <emscripten/val.h>
+#include "avif/avif.h"
+
+using namespace emscripten;
+
+struct AvifOptions {
+  // [0 - 63]
+  // 0 = lossless
+  // 63 = worst quality
+  int cqLevel;
+  // As above, but -1 means 'use cqLevel'
+  int cqAlphaLevel;
+  // [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;
+  // Extra chroma compression
+  bool chromaDeltaQ;
+  // 0-7
+  int sharpness;
+  // 0 = auto
+  // 1 = PSNR
+  // 2 = SSIM
+  int tune;
+  // 0-50
+  int denoiseLevel;
+};
+
+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;
+  }
+
+  bool lossless = options.cqLevel == AVIF_QUANTIZER_LOSSLESS &&
+                  options.cqAlphaLevel <= AVIF_QUANTIZER_LOSSLESS &&
+                  format == AVIF_PIXEL_FORMAT_YUV444;
+
+  avifImage* image = avifImageCreate(width, height, depth, format);
+
+  if (lossless) {
+    image->matrixCoefficients = AVIF_MATRIX_COEFFICIENTS_IDENTITY;
+  } else {
+    image->matrixCoefficients = AVIF_MATRIX_COEFFICIENTS_BT601;
+  }
+
+  uint8_t* rgba = reinterpret_cast<uint8_t*>(const_cast<char*>(buffer.data()));
+
+  avifRGBImage srcRGB;
+  avifRGBImageSetDefaults(&srcRGB, image);
+  srcRGB.pixels = rgba;
+  srcRGB.rowBytes = width * 4;
+  avifImageRGBToYUV(image, &srcRGB);
+
+  avifEncoder* encoder = avifEncoderCreate();
+
+  if (lossless) {
+    encoder->minQuantizer = AVIF_QUANTIZER_LOSSLESS;
+    encoder->maxQuantizer = AVIF_QUANTIZER_LOSSLESS;
+    encoder->minQuantizerAlpha = AVIF_QUANTIZER_LOSSLESS;
+    encoder->maxQuantizerAlpha = AVIF_QUANTIZER_LOSSLESS;
+  } else {
+    encoder->minQuantizer = AVIF_QUANTIZER_BEST_QUALITY;
+    encoder->maxQuantizer = AVIF_QUANTIZER_WORST_QUALITY;
+    encoder->minQuantizerAlpha = AVIF_QUANTIZER_BEST_QUALITY;
+    encoder->maxQuantizerAlpha = AVIF_QUANTIZER_WORST_QUALITY;
+    avifEncoderSetCodecSpecificOption(encoder, "end-usage", "q");
+    avifEncoderSetCodecSpecificOption(encoder, "cq-level", std::to_string(options.cqLevel).c_str());
+    avifEncoderSetCodecSpecificOption(encoder, "sharpness",
+                                      std::to_string(options.sharpness).c_str());
+
+    if (options.cqAlphaLevel != -1) {
+      avifEncoderSetCodecSpecificOption(encoder, "alpha:cq-level",
+                                        std::to_string(options.cqAlphaLevel).c_str());
+    }
+
+    if (options.tune == 2 || (options.tune == 0 && options.cqLevel <= 32)) {
+      avifEncoderSetCodecSpecificOption(encoder, "tune", "ssim");
+    }
+
+    if (options.chromaDeltaQ) {
+      avifEncoderSetCodecSpecificOption(encoder, "enable-chroma-deltaq", "1");
+    }
+
+    avifEncoderSetCodecSpecificOption(encoder, "color:denoise-noise-level",
+                                      std::to_string(options.denoiseLevel).c_str());
+  }
+
+  encoder->maxThreads = emscripten_num_logical_cores();
+  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("cqLevel", &AvifOptions::cqLevel)
+      .field("cqAlphaLevel", &AvifOptions::cqAlphaLevel)
+      .field("tileRowsLog2", &AvifOptions::tileRowsLog2)
+      .field("tileColsLog2", &AvifOptions::tileColsLog2)
+      .field("speed", &AvifOptions::speed)
+      .field("chromaDeltaQ", &AvifOptions::chromaDeltaQ)
+      .field("sharpness", &AvifOptions::sharpness)
+      .field("tune", &AvifOptions::tune)
+      .field("denoiseLevel", &AvifOptions::denoiseLevel)
+      .field("subsample", &AvifOptions::subsample);
+
+  function("encode", &encode);
+}

codecs/avif/enc/avif_enc.d.ts

@@ -0,0 +1,31 @@
+export const enum AVIFTune {
+  auto,
+  psnr,
+  ssim,
+}
+
+export interface EncodeOptions {
+  cqLevel: number;
+  denoiseLevel: number;
+  cqAlphaLevel: number;
+  tileRowsLog2: number;
+  tileColsLog2: number;
+  speed: number;
+  subsample: number;
+  chromaDeltaQ: boolean;
+  sharpness: number;
+  tune: AVIFTune;
+}
+
+export interface AVIFModule extends EmscriptenWasm.Module {
+  encode(
+    data: BufferSource,
+    width: number,
+    height: number,
+    options: EncodeOptions,
+  ): Uint8Array | null;
+}
+
+declare var moduleFactory: EmscriptenWasm.ModuleFactory<AVIFModule>;
+
+export default moduleFactory;

codecs/avif/enc/avif_enc_mt.d.ts

@@ -0,0 +1 @@
+export { default } from './avif_enc';

codecs/avif/enc/avif_enc_mt.worker.js

@@ -0,0 +1 @@
+"use strict";var Module={};var initializedJS=false;function threadPrintErr(){var text=Array.prototype.slice.call(arguments).join(" ");console.error(text)}function threadAlert(){var text=Array.prototype.slice.call(arguments).join(" ");postMessage({cmd:"alert",text:text,threadId:Module["_pthread_self"]()})}var err=threadPrintErr;self.alert=threadAlert;Module["instantiateWasm"]=function(info,receiveInstance){var instance=new WebAssembly.Instance(Module["wasmModule"],info);receiveInstance(instance);Module["wasmModule"]=null;return instance.exports};function moduleLoaded(){}self.onmessage=function(e){try{if(e.data.cmd==="load"){Module["wasmModule"]=e.data.wasmModule;Module["wasmMemory"]=e.data.wasmMemory;Module["buffer"]=Module["wasmMemory"].buffer;Module["ENVIRONMENT_IS_PTHREAD"]=true;(e.data.urlOrBlob?import(e.data.urlOrBlob):import("./avif_enc_mt.js")).then(function(exports){return exports.default(Module)}).then(function(instance){Module=instance;moduleLoaded()})}else if(e.data.cmd==="objectTransfer"){Module["PThread"].receiveObjectTransfer(e.data)}else if(e.data.cmd==="run"){Module["__performance_now_clock_drift"]=performance.now()-e.data.time;Module["__emscripten_thread_init"](e.data.threadInfoStruct,0,0);var max=e.data.stackBase;var top=e.data.stackBase+e.data.stackSize;Module["establishStackSpace"](top,max);Module["PThread"].receiveObjectTransfer(e.data);Module["PThread"].threadInit();if(!initializedJS){Module["___embind_register_native_and_builtin_types"]();initializedJS=true}try{var result=Module["invokeEntryPoint"](e.data.start_routine,e.data.arg);if(Module["keepRuntimeAlive"]()){Module["PThread"].setExitStatus(result)}else{Module["PThread"].threadExit(result)}}catch(ex){if(ex==="Canceled!"){Module["PThread"].threadCancel()}else if(ex!="unwind"){if(ex instanceof Module["ExitStatus"]){if(Module["keepRuntimeAlive"]()){}else{Module["PThread"].threadExit(ex.status)}}else{Module["PThread"].threadExit(-2);throw ex}}}}else if(e.data.cmd==="cancel"){if(Module["_pthread_self"]()){Module["PThread"].threadCancel()}}else if(e.data.target==="setimmediate"){}else if(e.data.cmd==="processThreadQueue"){if(Module["_pthread_self"]()){Module["_emscripten_current_thread_process_queued_calls"]()}}else{err("worker.js received unknown command "+e.data.cmd);err(e.data)}}catch(ex){err("worker.js onmessage() captured an uncaught exception: "+ex);if(ex&&ex.stack)err(ex.stack);throw ex}};

codecs/avif/enc/avif_node_enc_mt.worker.js

@@ -0,0 +1 @@
+"use strict";var Module={};if(typeof process==="object"&&typeof process.versions==="object"&&typeof process.versions.node==="string"){var nodeWorkerThreads=require("worker_threads");var parentPort=nodeWorkerThreads.parentPort;parentPort.on("message",function(data){onmessage({data:data})});var nodeFS=require("fs");Object.assign(global,{self:global,require:require,Module:Module,location:{href:__filename},Worker:nodeWorkerThreads.Worker,importScripts:function(f){(0,eval)(nodeFS.readFileSync(f,"utf8"))},postMessage:function(msg){parentPort.postMessage(msg)},performance:global.performance||{now:function(){return Date.now()}}})}var initializedJS=false;function threadPrintErr(){var text=Array.prototype.slice.call(arguments).join(" ");console.error(text)}function threadAlert(){var text=Array.prototype.slice.call(arguments).join(" ");postMessage({cmd:"alert",text:text,threadId:Module["_pthread_self"]()})}var err=threadPrintErr;self.alert=threadAlert;Module["instantiateWasm"]=function(info,receiveInstance){var instance=new WebAssembly.Instance(Module["wasmModule"],info);receiveInstance(instance);Module["wasmModule"]=null;return instance.exports};function moduleLoaded(){}self.onmessage=function(e){try{if(e.data.cmd==="load"){Module["wasmModule"]=e.data.wasmModule;Module["wasmMemory"]=e.data.wasmMemory;Module["buffer"]=Module["wasmMemory"].buffer;Module["ENVIRONMENT_IS_PTHREAD"]=true;(e.data.urlOrBlob?import(e.data.urlOrBlob):import("./avif_node_enc_mt.js")).then(function(exports){return exports.default(Module)}).then(function(instance){Module=instance;moduleLoaded()})}else if(e.data.cmd==="objectTransfer"){Module["PThread"].receiveObjectTransfer(e.data)}else if(e.data.cmd==="run"){Module["__performance_now_clock_drift"]=performance.now()-e.data.time;Module["__emscripten_thread_init"](e.data.threadInfoStruct,0,0);var max=e.data.stackBase;var top=e.data.stackBase+e.data.stackSize;Module["establishStackSpace"](top,max);Module["PThread"].receiveObjectTransfer(e.data);Module["PThread"].threadInit();if(!initializedJS){Module["___embind_register_native_and_builtin_types"]();initializedJS=true}try{var result=Module["invokeEntryPoint"](e.data.start_routine,e.data.arg);if(Module["keepRuntimeAlive"]()){Module["PThread"].setExitStatus(result)}else{Module["PThread"].threadExit(result)}}catch(ex){if(ex==="Canceled!"){Module["PThread"].threadCancel()}else if(ex!="unwind"){if(ex instanceof Module["ExitStatus"]){if(Module["keepRuntimeAlive"]()){}else{Module["PThread"].threadExit(ex.status)}}else{Module["PThread"].threadExit(-2);throw ex}}}}else if(e.data.cmd==="cancel"){if(Module["_pthread_self"]()){Module["PThread"].threadCancel()}}else if(e.data.target==="setimmediate"){}else if(e.data.cmd==="processThreadQueue"){if(Module["_pthread_self"]()){Module["_emscripten_current_thread_process_queued_calls"]()}}else{err("worker.js received unknown command "+e.data.cmd);err(e.data)}}catch(ex){err("worker.js onmessage() captured an uncaught exception: "+ex);if(ex&&ex.stack)err(ex.stack);throw ex}};

codecs/avif/helper.Makefile

@@ -0,0 +1,73 @@
+# This is a helper Makefile for building LibAVIF + LibAOM with given params.
+#
+# Params that must be supplied by the caller:
+#   $(CODEC_DIR)
+#   $(LIBAOM_DIR)
+#   $(BUILD_DIR)
+#   $(OUT_JS)
+#   $(OUT_CPP)
+#   $(LIBAOM_FLAGS)
+#   $(LIBAVIF_FLAGS)
+#   $(ENVIRONMENT)
+
+OUT_BUILD_DIR := $(BUILD_DIR)/$(basename $(OUT_JS))
+
+CODEC_BUILD_DIR := $(OUT_BUILD_DIR)/libavif
+CODEC_OUT := $(CODEC_BUILD_DIR)/libavif.a
+
+LIBAOM_BUILD_DIR := $(OUT_BUILD_DIR)/libaom
+LIBAOM_OUT := $(LIBAOM_BUILD_DIR)/libaom.a
+
+OUT_WASM = $(OUT_JS:.js=.wasm)
+OUT_WORKER=$(OUT_JS:.js=.worker.js)
+
+.PHONY: all clean
+
+all: $(OUT_JS)
+
+$(OUT_JS): $(OUT_CPP) $(LIBAOM_OUT) $(CODEC_OUT)
+	$(CXX) \
+		-I $(CODEC_DIR)/include \
+		$(CXXFLAGS) \
+		$(LDFLAGS) \
+		$(OUT_FLAGS) \
+		--bind \
+		-s ENVIRONMENT=$(ENVIRONMENT) \
+		-s EXPORT_ES6=1 \
+		-o $@ \
+		$+
+
+$(CODEC_OUT): $(CODEC_DIR)/CMakeLists.txt $(LIBAOM_OUT)
+	emcmake cmake \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DBUILD_SHARED_LIBS=0 \
+		-DAVIF_CODEC_AOM=1 \
+		-DAOM_LIBRARY=$(LIBAOM_OUT) \
+		-DAOM_INCLUDE_DIR=$(LIBAOM_DIR) \
+		$(LIBAVIF_FLAGS) \
+		-B $(CODEC_BUILD_DIR) \
+		$(CODEC_DIR) && \
+	$(MAKE) -C $(CODEC_BUILD_DIR)
+
+$(LIBAOM_OUT): $(LIBAOM_DIR)/CMakeLists.txt
+	emcmake cmake \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DENABLE_CCACHE=0 \
+		-DAOM_TARGET_CPU=generic \
+		-DENABLE_DOCS=0 \
+		-DENABLE_TESTS=0 \
+		-DENABLE_EXAMPLES=0 \
+		-DENABLE_TOOLS=0 \
+		-DCONFIG_ACCOUNTING=1 \
+		-DCONFIG_INSPECTION=0 \
+		-DCONFIG_RUNTIME_CPU_DETECT=0 \
+		-DCONFIG_WEBM_IO=0 \
+		$(LIBAOM_FLAGS) \
+		-B $(LIBAOM_BUILD_DIR) \
+		$(LIBAOM_DIR) && \
+	$(MAKE) -C $(LIBAOM_BUILD_DIR)
+
+clean:
+	$(RM) $(OUT_JS) $(OUT_WASM) $(OUT_WORKER)
+	$(MAKE) -C $(CODEC_BUILD_DIR) clean
+	$(MAKE) -C $(LIBAOM_BUILD_DIR) clean

codecs/avif/package.json

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

codecs/build-cpp.sh

@@ -0,0 +1,3 @@
+#!/bin/sh -e
+docker build -t squoosh-cpp - < ../cpp.Dockerfile
+docker run -it --rm -v $PWD:/src squoosh-cpp "$@"

codecs/build-rust.sh

@@ -0,0 +1,10 @@
+set -e
+
+if [ ! -z "$RUST_IMG" ]
+then
+  # Get part after ":" (https://stackoverflow.com/a/15149278/439965).
+  IMG_SUFFIX=-${RUST_IMG#*:}
+fi
+IMG_NAME=squoosh-rust$IMG_SUFFIX
+docker build -t $IMG_NAME --build-arg RUST_IMG - < ../rust.Dockerfile
+docker run -it --rm -v $PWD:/src $IMG_NAME "$@"

codecs/cpp.Dockerfile

@@ -0,0 +1,17 @@
+FROM emscripten/emsdk:2.0.23
+RUN apt-get update && apt-get install -qqy autoconf libtool pkg-config
+ENV CFLAGS "-O3 -flto"
+ENV CXXFLAGS "${CFLAGS} -std=c++17"
+ENV LDFLAGS "${CFLAGS} \
+-s FILESYSTEM=0 \
+-s PTHREAD_POOL_SIZE=navigator.hardwareConcurrency \
+-s ALLOW_MEMORY_GROWTH=1 \
+-s TEXTDECODER=2 \
+-s NODEJS_CATCH_EXIT=0 -s NODEJS_CATCH_REJECTION=0 \
+"
+# Build and cache standard libraries with these flags + Embind.
+RUN emcc ${CXXFLAGS} ${LDFLAGS} --bind -xc++ /dev/null -o /dev/null
+# And another set for the pthread variant.
+RUN emcc ${CXXFLAGS} ${LDFLAGS} --bind -pthread -xc++ /dev/null -o /dev/null
+WORKDIR /src
+CMD ["sh", "-c", "emmake make -j`nproc`"]

codecs/hqx/.gitignore

@@ -0,0 +1 @@
+/target

codecs/hqx/Cargo.lock

@@ -0,0 +1,292 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "bumpalo"
+version = "3.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e8c087f005730276d1096a652e92a8bacee2e2472bcc9715a74d2bec38b5820"
+
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "console_error_panic_hook"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8d976903543e0c48546a91908f21588a680a8c8f984df9a5d69feccb2b2a211"
+dependencies = [
+ "cfg-if 0.1.10",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "futures"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b980f2816d6ee8673b6517b52cb0e808a180efc92e5c19d02cdda79066703ef"
+
+[[package]]
+name = "hqx"
+version = "0.1.0"
+source = "git+https://github.com/CryZe/wasmboy-rs?tag=v0.1.3#d7cbae67906796928c8e451b186f3c653924beb8"
+dependencies = [
+ "lazy_static",
+]
+
+[[package]]
+name = "js-sys"
+version = "0.3.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52732a3d3ad72c58ad2dc70624f9c17b46ecd0943b9a4f1ee37c4c18c5d983e2"
+dependencies = [
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.73"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd7d4bd64732af4bf3a67f367c27df8520ad7e230c5817b8ff485864d80242b9"
+
+[[package]]
+name = "log"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fabed175da42fed1fa0746b0ea71f412aa9d35e76e95e59b192c64b9dc2bf8b"
+dependencies = [
+ "cfg-if 0.1.10",
+]
+
+[[package]]
+name = "memory_units"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8452105ba047068f40ff7093dd1d9da90898e63dd61736462e9cdda6a90ad3c3"
+
+[[package]]
+name = "proc-macro2"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
+dependencies = [
+ "unicode-xid 0.1.0",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0d8caf72986c1a598726adc988bb5984792ef84f5ee5aa50209145ee8077038"
+dependencies = [
+ "unicode-xid 0.2.1",
+]
+
+[[package]]
+name = "quote"
+version = "0.6.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
+dependencies = [
+ "proc-macro2 0.4.30",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
+dependencies = [
+ "proc-macro2 1.0.27",
+]
+
+[[package]]
+name = "scoped-tls"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
+
+[[package]]
+name = "squooshhqx"
+version = "0.1.0"
+dependencies = [
+ "cfg-if 0.1.10",
+ "console_error_panic_hook",
+ "hqx",
+ "wasm-bindgen",
+ "wasm-bindgen-test",
+ "wee_alloc",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.72"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "proc-macro2 1.0.27",
+ "quote 1.0.7",
+ "unicode-xid 0.2.1",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
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+
+[[package]]
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+
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+dependencies = [
+ "cfg-if 1.0.0",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.74"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b33f6a0694ccfea53d94db8b2ed1c3a8a4c86dd936b13b9f0a15ec4a451b900"
+dependencies = [
+ "bumpalo",
+ "lazy_static",
+ "log",
+ "proc-macro2 1.0.27",
+ "quote 1.0.7",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.3.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "cfg-if 0.1.10",
+ "futures",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.74"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "088169ca61430fe1e58b8096c24975251700e7b1f6fd91cc9d59b04fb9b18bd4"
+dependencies = [
+ "quote 1.0.7",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.74"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be2241542ff3d9f241f5e2cb6dd09b37efe786df8851c54957683a49f0987a97"
+dependencies = [
+ "proc-macro2 1.0.27",
+ "quote 1.0.7",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.74"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7cff876b8f18eed75a66cf49b65e7f967cb354a7aa16003fb55dbfd25b44b4f"
+
+[[package]]
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+checksum = "a2d9693b63a742d481c7f80587e057920e568317b2806988c59cd71618bc26c1"
+dependencies = [
+ "console_error_panic_hook",
+ "futures",
+ "js-sys",
+ "scoped-tls",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-bindgen-test-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-test-macro"
+version = "0.2.50"
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+ "proc-macro2 0.4.30",
+ "quote 0.6.13",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb3b5a6b2bb17cb6ad44a2e68a43e8d2722c997da10e928665c72ec6c0a0b8e"
+dependencies = [
+ "cfg-if 0.1.10",
+ "libc",
+ "memory_units",
+ "winapi",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

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="v0.1.3"}
+
+# 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/LICENSE.codec.md

@@ -0,0 +1,201 @@
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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/package-lock.json

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

codecs/hqx/package.json

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

codecs/hqx/pkg/README.md

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

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 +1,30 @@
+/* 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;
+
+export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
+
+export interface InitOutput {
+  readonly memory: WebAssembly.Memory;
+  readonly resize: (a: number, b: number, c: number, d: number, e: number, f: number) => void;
+  readonly __wbindgen_add_to_stack_pointer: (a: number) => number;
+  readonly __wbindgen_malloc: (a: number) => number;
+  readonly __wbindgen_free: (a: number, b: number) => void;
+}
+
+/**
+* If `module_or_path` is {RequestInfo} or {URL}, makes a request and
+* for everything else, calls `WebAssembly.instantiate` directly.
+*
+* @param {InitInput | Promise<InitInput>} module_or_path
+*
+* @returns {Promise<InitOutput>}
+*/
+export default function init (module_or_path?: InitInput | Promise<InitInput>): Promise<InitOutput>;

codecs/hqx/pkg/squooshhqx.js

@@ -0,0 +1,108 @@
+
+let 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) {
+    try {
+        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
+        var ptr0 = passArray32ToWasm0(input_image, wasm.__wbindgen_malloc);
+        var len0 = WASM_VECTOR_LEN;
+        wasm.resize(retptr, ptr0, len0, input_width, input_height, factor);
+        var r0 = getInt32Memory0()[retptr / 4 + 0];
+        var r1 = getInt32Memory0()[retptr / 4 + 1];
+        var v1 = getArrayU32FromWasm0(r0, r1).slice();
+        wasm.__wbindgen_free(r0, r1 * 4);
+        return v1;
+    } finally {
+        wasm.__wbindgen_add_to_stack_pointer(16);
+    }
+}
+
+async function load(module, imports) {
+    if (typeof Response === 'function' && module instanceof Response) {
+        if (typeof WebAssembly.instantiateStreaming === 'function') {
+            try {
+                return await WebAssembly.instantiateStreaming(module, imports);
+
+            } catch (e) {
+                if (module.headers.get('Content-Type') != 'application/wasm') {
+                    console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
+
+                } else {
+                    throw e;
+                }
+            }
+        }
+
+        const bytes = await module.arrayBuffer();
+        return await WebAssembly.instantiate(bytes, imports);
+
+    } else {
+        const instance = await WebAssembly.instantiate(module, imports);
+
+        if (instance instanceof WebAssembly.Instance) {
+            return { instance, module };
+
+        } else {
+            return instance;
+        }
+    }
+}
+
+async function init(input) {
+    if (typeof input === 'undefined') {
+        input = new URL('squooshhqx_bg.wasm', import.meta.url);
+    }
+    const imports = {};
+
+
+    if (typeof input === 'string' || (typeof Request === 'function' && input instanceof Request) || (typeof URL === 'function' && input instanceof URL)) {
+        input = fetch(input);
+    }
+
+
+
+    const { instance, module } = await load(await input, imports);
+
+    wasm = instance.exports;
+    init.__wbindgen_wasm_module = module;
+
+    return wasm;
+}
+
+export default init;
+

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
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
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+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+implied warranty.

codecs/imagequant/Makefile

@@ -0,0 +1,41 @@
+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 imagequant_node.js
+OUT_WASM := $(OUT_JS:.js=.wasm)
+ENVIRONMENT = worker
+
+.PHONY: all clean
+
+all: $(OUT_JS)
+
+imagequant_node.js: ENVIRONMENT=node
+$(OUT_JS): $(CODEC_OUT)
+	$(CXX) \
+		-I $(CODEC_DIR) \
+		${CXXFLAGS} \
+		${LDFLAGS} \
+		--bind \
+		-s ENVIRONMENT=$(ENVIRONMENT) \
+		-s EXPORT_ES6=1 \
+		-o $@ \
+		$+ \
+		imagequant.cpp
+
+$(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

@@ -1,18 +1,17 @@
-<!doctype html>
+<!DOCTYPE html>
 <style>
   canvas {
     image-rendering: pixelated;
   }
 </style>
-<script src='imagequant.js'></script>
-<script>
-  const Module = imagequant();
+<script type="module">
+  import imagequant from './imagequant.js';
 
   async function loadImage(src) {
     // Load image
     const img = document.createElement('img');
     img.src = src;
-    await new Promise(resolve => img.onload = resolve);
+    await new Promise((resolve) => (img.onload = resolve));
     // Make canvas same size as image
     const canvas = document.createElement('canvas');
     [canvas.width, canvas.height] = [img.width, img.height];
@@ -22,20 +21,32 @@
     return ctx.getImageData(0, 0, img.width, img.height);
   }
 
-  Module.onRuntimeInitialized = async _ => {
-    console.log('Version:', Module.version().toString(16));
-    const image = await loadImage('../example.png');
-    // 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();
+  async function main() {
+    const module = await imagequant();
 
-    const imageData = new ImageData(new Uint8ClampedArray(rawImage.buffer), rawImage.width, rawImage.height);
+    console.log('Version:', module.version().toString(16));
+    const image = await loadImage('../example.png');
+    const rawImage = module.quantize(
+      image.data,
+      image.width,
+      image.height,
+      256,
+      1.0,
+    );
+    console.log('done');
+
+    const imageData = new ImageData(
+      new Uint8ClampedArray(rawImage.buffer),
+      image.width,
+      image.height,
+    );
     const canvas = document.createElement('canvas');
     canvas.width = image.width;
     canvas.height = image.height;
     const ctx = canvas.getContext('2d');
     ctx.putImageData(imageData, 0, 0);
     document.body.appendChild(canvas);
-  };
+  }
+
+  main();
 </script>

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 +1,19 @@
-interface RawImage {
-  buffer: Uint8Array;
-  width: number;
-  height: number;
+export interface QuantizerModule extends EmscriptenWasm.Module {
+  quantize(
+    data: BufferSource,
+    width: number,
+    height: number,
+    numColors: number,
+    dither: number,
+  ): Uint8ClampedArray;
+  zx_quantize(
+    data: BufferSource,
+    width: number,
+    height: number,
+    dither: number,
+  ): Uint8ClampedArray;
 }
 
-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;
-}
-
-export default function(opts: EmscriptenWasm.ModuleOpts): QuantizerModule;
-
+declare var moduleFactory: EmscriptenWasm.ModuleFactory<QuantizerModule>;
 
+export default moduleFactory;

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/jxl/Makefile

@@ -0,0 +1,90 @@
+CODEC_URL = https://github.com/libjxl/libjxl.git
+CODEC_VERSION = v0.5
+CODEC_DIR = node_modules/jxl
+CODEC_BUILD_ROOT := $(CODEC_DIR)/build
+CODEC_MT_BUILD_DIR := $(CODEC_BUILD_ROOT)/mt
+CODEC_MT_SIMD_BUILD_DIR := $(CODEC_BUILD_ROOT)/mt-simd
+ENVIRONMENT = worker
+
+OUT_JS = enc/jxl_enc.js enc/jxl_enc_mt.js enc/jxl_enc_mt_simd.js dec/jxl_dec.js enc/jxl_node_enc.js dec/jxl_node_dec.js
+OUT_WASM = $(OUT_JS:.js=.wasm)
+OUT_WORKER = $(OUT_JS:.js=.worker.js)
+
+.PHONY: all clean
+
+all: $(OUT_JS)
+
+# Define dependencies for all variations of build artifacts.
+$(filter enc/%,$(OUT_JS)): enc/jxl_enc.cpp
+$(filter dec/%,$(OUT_JS)): dec/jxl_dec.cpp
+
+enc/jxl_node_enc.js dec/jxl_node_dec.js: ENVIRONMENT = node
+
+# For single-threaded build, we compile with threads enabled, but then just don't use them nor link them in.
+enc/jxl_enc.js enc/jxl_node_enc.js enc/jxl_enc_mt.js dec/jxl_dec.js dec/jxl_node_dec.js: CODEC_BUILD_DIR:=$(CODEC_MT_BUILD_DIR)
+enc/jxl_enc_mt_simd.js: CODEC_BUILD_DIR:=$(CODEC_MT_SIMD_BUILD_DIR)
+
+enc/jxl_node_enc.js dec/jxl_node_dec.js enc/jxl_enc.js dec/jxl_dec.js: $(CODEC_MT_BUILD_DIR)/lib/libjxl.a
+enc/jxl_enc_mt.js: $(CODEC_MT_BUILD_DIR)/lib/libjxl.a $(CODEC_MT_BUILD_DIR)/lib/libjxl_threads.a
+enc/jxl_enc_mt_simd.js: $(CODEC_MT_SIMD_BUILD_DIR)/lib/libjxl.a $(CODEC_MT_SIMD_BUILD_DIR)/lib/libjxl_threads.a
+
+# Disable errors on deprecated SIMD intrinsics.
+# JPEG-XL & Highway need to catch up, once they do, we can remove this suppression.
+export CXXFLAGS += -Wno-deprecated-declarations
+
+# Compile multithreaded wrappers with -pthread.
+enc/jxl_enc_mt.js enc/jxl_enc_mt_simd.js: CXXFLAGS+=-pthread
+
+$(OUT_JS):
+	$(CXX) \
+		$(CXXFLAGS) \
+		$(LDFLAGS) \
+		-I $(CODEC_DIR) \
+		-I $(CODEC_DIR)/lib \
+		-I $(CODEC_DIR)/lib/include \
+		-I $(CODEC_BUILD_DIR)/lib/include \
+		-I $(CODEC_DIR)/third_party/highway \
+		-I $(CODEC_DIR)/third_party/skcms \
+		--bind \
+		-s ENVIRONMENT=$(ENVIRONMENT) \
+		-s EXPORT_ES6=1 \
+		-o $@ \
+		$+ \
+		$(CODEC_BUILD_DIR)/third_party/brotli/libbrotlidec-static.a \
+		$(CODEC_BUILD_DIR)/third_party/brotli/libbrotlienc-static.a \
+		$(CODEC_BUILD_DIR)/third_party/brotli/libbrotlicommon-static.a \
+		$(CODEC_BUILD_DIR)/third_party/libskcms.a \
+		$(CODEC_BUILD_DIR)/third_party/highway/libhwy.a
+
+%/lib/libjxl.a: %/Makefile
+	$(MAKE) -C $(<D) jxl-static
+
+%/lib/libjxl_threads.a: %/Makefile
+	$(MAKE) -C $(<D) jxl_threads-static
+
+# Enable SIMD on a SIMD build.
+$(CODEC_MT_SIMD_BUILD_DIR)/Makefile: CXXFLAGS+=-msimd128
+
+%/Makefile: $(CODEC_DIR)/CMakeLists.txt
+	emcmake cmake \
+	$(CMAKE_FLAGS) \
+	-DBUILD_SHARED_LIBS=0 \
+	-DJPEGXL_ENABLE_BENCHMARK=0 \
+	-DJPEGXL_ENABLE_EXAMPLES=0 \
+	-DBUILD_TESTING=0 \
+	-DCMAKE_CROSSCOMPILING_EMULATOR=node \
+	-B $(@D) \
+	$(<D)
+
+$(CODEC_DIR)/CMakeLists.txt:
+	$(RM) -r $(@D)
+	git init $(@D)
+	git -C $(@D) fetch $(CODEC_URL) $(CODEC_VERSION) --depth 1
+	git -C $(@D) checkout FETCH_HEAD
+	git -C $(@D) submodule update --init --depth 1 --recursive --jobs `nproc`
+
+clean:
+	$(RM) $(OUT_JS) $(OUT_WASM) $(OUT_WORKER)
+	$(MAKE) -C $(CODEC_BUILD_DIR) clean
+	$(MAKE) -C $(CODEC_MT_BUILD_DIR) clean
+	$(MAKE) -C $(CODEC_MT_SIMD_BUILD_DIR) clean

codecs/jxl/dec/jxl_dec.cpp

@@ -0,0 +1,99 @@
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+
+#include <jxl/decode.h>
+#include "lib/jxl/color_encoding_internal.h"
+
+#include "skcms.h"
+
+using namespace emscripten;
+
+thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
+thread_local const val ImageData = val::global("ImageData");
+
+// R, G, B, A
+#define COMPONENTS_PER_PIXEL 4
+
+#ifndef JXL_DEBUG_ON_ALL_ERROR
+#define JXL_DEBUG_ON_ALL_ERROR 0
+#endif
+
+#if JXL_DEBUG_ON_ALL_ERROR
+#define EXPECT_TRUE(a)                                             \
+  if (!(a)) {                                                      \
+    fprintf(stderr, "Assertion failure (%d): %s\n", __LINE__, #a); \
+    return val::null();                                            \
+  }
+#define EXPECT_EQ(a, b)                                                                          \
+  {                                                                                              \
+    int a_ = a;                                                                                  \
+    int b_ = b;                                                                                  \
+    if (a_ != b_) {                                                                              \
+      fprintf(stderr, "Assertion failure (%d): %s (%d) != %s (%d)\n", __LINE__, #a, a_, #b, b_); \
+      return val::null();                                                                        \
+    }                                                                                            \
+  }
+#else
+#define EXPECT_TRUE(a)  \
+  if (!(a)) {           \
+    return val::null(); \
+  }
+
+#define EXPECT_EQ(a, b) EXPECT_TRUE((a) == (b));
+#endif
+
+val decode(std::string data) {
+  std::unique_ptr<JxlDecoder,
+                  std::integral_constant<decltype(&JxlDecoderDestroy), JxlDecoderDestroy>>
+      dec(JxlDecoderCreate(nullptr));
+  EXPECT_EQ(JXL_DEC_SUCCESS,
+            JxlDecoderSubscribeEvents(
+                dec.get(), JXL_DEC_BASIC_INFO | JXL_DEC_COLOR_ENCODING | JXL_DEC_FULL_IMAGE));
+
+  auto next_in = (const uint8_t*)data.c_str();
+  auto avail_in = data.size();
+  JxlDecoderSetInput(dec.get(), next_in, avail_in);
+  EXPECT_EQ(JXL_DEC_BASIC_INFO, JxlDecoderProcessInput(dec.get()));
+  JxlBasicInfo info;
+  EXPECT_EQ(JXL_DEC_SUCCESS, JxlDecoderGetBasicInfo(dec.get(), &info));
+  size_t pixel_count = info.xsize * info.ysize;
+  size_t component_count = pixel_count * COMPONENTS_PER_PIXEL;
+
+  EXPECT_EQ(JXL_DEC_COLOR_ENCODING, JxlDecoderProcessInput(dec.get()));
+  static const JxlPixelFormat format = {COMPONENTS_PER_PIXEL, JXL_TYPE_FLOAT, JXL_LITTLE_ENDIAN, 0};
+  size_t icc_size;
+  EXPECT_EQ(JXL_DEC_SUCCESS, JxlDecoderGetICCProfileSize(dec.get(), &format,
+                                                         JXL_COLOR_PROFILE_TARGET_DATA, &icc_size));
+  std::vector<uint8_t> icc_profile(icc_size);
+  EXPECT_EQ(JXL_DEC_SUCCESS,
+            JxlDecoderGetColorAsICCProfile(dec.get(), &format, JXL_COLOR_PROFILE_TARGET_DATA,
+                                           icc_profile.data(), icc_profile.size()));
+
+  EXPECT_EQ(JXL_DEC_NEED_IMAGE_OUT_BUFFER, JxlDecoderProcessInput(dec.get()));
+  size_t buffer_size;
+  EXPECT_EQ(JXL_DEC_SUCCESS, JxlDecoderImageOutBufferSize(dec.get(), &format, &buffer_size));
+  EXPECT_EQ(buffer_size, component_count * sizeof(float));
+
+  auto float_pixels = std::make_unique<float[]>(component_count);
+  EXPECT_EQ(JXL_DEC_SUCCESS, JxlDecoderSetImageOutBuffer(dec.get(), &format, float_pixels.get(),
+                                                         component_count * sizeof(float)));
+  EXPECT_EQ(JXL_DEC_FULL_IMAGE, JxlDecoderProcessInput(dec.get()));
+
+  auto byte_pixels = std::make_unique<uint8_t[]>(component_count);
+  // Convert to sRGB.
+  skcms_ICCProfile jxl_profile;
+  EXPECT_TRUE(skcms_Parse(icc_profile.data(), icc_profile.size(), &jxl_profile));
+  EXPECT_TRUE(skcms_Transform(
+      float_pixels.get(), skcms_PixelFormat_RGBA_ffff,
+      info.alpha_premultiplied ? skcms_AlphaFormat_PremulAsEncoded : skcms_AlphaFormat_Unpremul,
+      &jxl_profile, byte_pixels.get(), skcms_PixelFormat_RGBA_8888, skcms_AlphaFormat_Unpremul,
+      skcms_sRGB_profile(), pixel_count));
+
+  return ImageData.new_(
+      Uint8ClampedArray.new_(typed_memory_view(component_count, byte_pixels.get())), info.xsize,
+      info.ysize);
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  function("decode", &decode);
+}

codecs/jxl/dec/jxl_dec.d.ts

@@ -0,0 +1,7 @@
+export interface JXLModule extends EmscriptenWasm.Module {
+  decode(data: BufferSource): ImageData | null;
+}
+
+declare var moduleFactory: EmscriptenWasm.ModuleFactory<JXLModule>;
+
+export default moduleFactory;

codecs/jxl/enc/jxl_enc.cpp

@@ -0,0 +1,119 @@
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+
+#include "lib/jxl/base/thread_pool_internal.h"
+#include "lib/jxl/enc_external_image.h"
+#include "lib/jxl/enc_file.h"
+
+using namespace emscripten;
+
+thread_local const val Uint8Array = val::global("Uint8Array");
+
+struct JXLOptions {
+  int effort;
+  float quality;
+  bool progressive;
+  int epf;
+  bool lossyPalette;
+  size_t decodingSpeedTier;
+  float photonNoiseIso;
+};
+
+val encode(std::string image, int width, int height, JXLOptions options) {
+  jxl::CompressParams cparams;
+  jxl::PassesEncoderState passes_enc_state;
+  jxl::CodecInOut io;
+  jxl::PaddedBytes bytes;
+  jxl::ImageBundle* main = &io.Main();
+  jxl::ThreadPoolInternal* pool_ptr = nullptr;
+#ifdef __EMSCRIPTEN_PTHREADS__
+  jxl::ThreadPoolInternal pool;
+  pool_ptr = &pool;
+#endif
+
+  size_t st = 10 - options.effort;
+  cparams.speed_tier = jxl::SpeedTier(st);
+
+  cparams.epf = options.epf;
+  cparams.decoding_speed_tier = options.decodingSpeedTier;
+  cparams.photon_noise_iso = options.photonNoiseIso;
+
+  if (options.lossyPalette) {
+    cparams.lossy_palette = true;
+    cparams.palette_colors = 0;
+    cparams.options.predictor = jxl::Predictor::Zero;
+    // Near-lossless assumes -R 0
+    cparams.responsive = 0;
+    cparams.modular_mode = true;
+  }
+
+  float quality = options.quality;
+
+  // Quality settings roughly match libjpeg qualities.
+  if (quality < 7 || quality == 100) {
+    cparams.modular_mode = true;
+    // Internal modular quality to roughly match VarDCT size.
+    cparams.quality_pair.first = cparams.quality_pair.second =
+        std::min(35 + (quality - 7) * 3.0f, 100.0f);
+  } else {
+    cparams.modular_mode = false;
+    if (quality >= 30) {
+      cparams.butteraugli_distance = 0.1 + (100 - quality) * 0.09;
+    } else {
+      cparams.butteraugli_distance = 6.4 + pow(2.5, (30 - quality) / 5.0f) / 6.25f;
+    }
+  }
+
+  if (options.progressive) {
+    cparams.qprogressive_mode = true;
+    cparams.responsive = 1;
+    if (!cparams.modular_mode) {
+      cparams.progressive_dc = 1;
+    }
+  }
+
+  if (cparams.modular_mode) {
+    if (cparams.quality_pair.first != 100 || cparams.quality_pair.second != 100) {
+      cparams.color_transform = jxl::ColorTransform::kXYB;
+    } else {
+      cparams.color_transform = jxl::ColorTransform::kNone;
+    }
+  }
+
+  io.metadata.m.SetAlphaBits(8);
+  if (!io.metadata.size.Set(width, height)) {
+    return val::null();
+  }
+
+  uint8_t* inBuffer = (uint8_t*)image.c_str();
+
+  auto result = jxl::ConvertFromExternal(
+      jxl::Span<const uint8_t>(reinterpret_cast<const uint8_t*>(image.data()), image.size()), width,
+      height, jxl::ColorEncoding::SRGB(/*is_gray=*/false), /*has_alpha=*/true,
+      /*alpha_is_premultiplied=*/false, /*bits_per_sample=*/8, /*endiannes=*/JXL_LITTLE_ENDIAN,
+      /*flipped_y=*/false, pool_ptr, main);
+
+  if (!result) {
+    return val::null();
+  }
+
+  auto js_result = val::null();
+  if (EncodeFile(cparams, &io, &passes_enc_state, &bytes, /*aux=*/nullptr, pool_ptr)) {
+    js_result = Uint8Array.new_(typed_memory_view(bytes.size(), bytes.data()));
+  }
+
+  return js_result;
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  value_object<JXLOptions>("JXLOptions")
+      .field("effort", &JXLOptions::effort)
+      .field("quality", &JXLOptions::quality)
+      .field("progressive", &JXLOptions::progressive)
+      .field("lossyPalette", &JXLOptions::lossyPalette)
+      .field("decodingSpeedTier", &JXLOptions::decodingSpeedTier)
+      .field("photonNoiseIso", &JXLOptions::photonNoiseIso)
+      .field("epf", &JXLOptions::epf);
+
+  function("encode", &encode);
+}

codecs/jxl/enc/jxl_enc.d.ts

@@ -0,0 +1,22 @@
+export interface EncodeOptions {
+  effort: number;
+  quality: number;
+  progressive: boolean;
+  epf: number;
+  lossyPalette: boolean;
+  decodingSpeedTier: number;
+  photonNoiseIso: number;
+}
+
+export interface JXLModule extends EmscriptenWasm.Module {
+  encode(
+    data: BufferSource,
+    width: number,
+    height: number,
+    options: EncodeOptions,
+  ): Uint8Array | null;
+}
+
+declare var moduleFactory: EmscriptenWasm.ModuleFactory<JXLModule>;
+
+export default moduleFactory;

codecs/jxl/enc/jxl_enc_mt.d.ts

@@ -0,0 +1 @@
+export { default } from './jxl_enc';

codecs/jxl/enc/jxl_enc_mt.worker.js

@@ -0,0 +1 @@
+"use strict";var Module={};var initializedJS=false;function threadPrintErr(){var text=Array.prototype.slice.call(arguments).join(" ");console.error(text)}function threadAlert(){var text=Array.prototype.slice.call(arguments).join(" ");postMessage({cmd:"alert",text:text,threadId:Module["_pthread_self"]()})}var err=threadPrintErr;self.alert=threadAlert;Module["instantiateWasm"]=function(info,receiveInstance){var instance=new WebAssembly.Instance(Module["wasmModule"],info);receiveInstance(instance);Module["wasmModule"]=null;return instance.exports};function moduleLoaded(){}self.onmessage=function(e){try{if(e.data.cmd==="load"){Module["wasmModule"]=e.data.wasmModule;Module["wasmMemory"]=e.data.wasmMemory;Module["buffer"]=Module["wasmMemory"].buffer;Module["ENVIRONMENT_IS_PTHREAD"]=true;(e.data.urlOrBlob?import(e.data.urlOrBlob):import("./jxl_enc_mt.js")).then(function(exports){return exports.default(Module)}).then(function(instance){Module=instance;moduleLoaded()})}else if(e.data.cmd==="objectTransfer"){Module["PThread"].receiveObjectTransfer(e.data)}else if(e.data.cmd==="run"){Module["__performance_now_clock_drift"]=performance.now()-e.data.time;Module["__emscripten_thread_init"](e.data.threadInfoStruct,0,0);var max=e.data.stackBase;var top=e.data.stackBase+e.data.stackSize;Module["establishStackSpace"](top,max);Module["PThread"].receiveObjectTransfer(e.data);Module["PThread"].threadInit();if(!initializedJS){Module["___embind_register_native_and_builtin_types"]();initializedJS=true}try{var result=Module["invokeEntryPoint"](e.data.start_routine,e.data.arg);if(Module["keepRuntimeAlive"]()){Module["PThread"].setExitStatus(result)}else{Module["PThread"].threadExit(result)}}catch(ex){if(ex==="Canceled!"){Module["PThread"].threadCancel()}else if(ex!="unwind"){if(ex instanceof Module["ExitStatus"]){if(Module["keepRuntimeAlive"]()){}else{Module["PThread"].threadExit(ex.status)}}else{Module["PThread"].threadExit(-2);throw ex}}}}else if(e.data.cmd==="cancel"){if(Module["_pthread_self"]()){Module["PThread"].threadCancel()}}else if(e.data.target==="setimmediate"){}else if(e.data.cmd==="processThreadQueue"){if(Module["_pthread_self"]()){Module["_emscripten_current_thread_process_queued_calls"]()}}else{err("worker.js received unknown command "+e.data.cmd);err(e.data)}}catch(ex){err("worker.js onmessage() captured an uncaught exception: "+ex);if(ex&&ex.stack)err(ex.stack);throw ex}};

codecs/jxl/enc/jxl_enc_mt_simd.d.ts

@@ -0,0 +1 @@
+export { default } from './jxl_enc';

codecs/jxl/enc/jxl_enc_mt_simd.worker.js

@@ -0,0 +1 @@
+"use strict";var Module={};var initializedJS=false;function threadPrintErr(){var text=Array.prototype.slice.call(arguments).join(" ");console.error(text)}function threadAlert(){var text=Array.prototype.slice.call(arguments).join(" ");postMessage({cmd:"alert",text:text,threadId:Module["_pthread_self"]()})}var err=threadPrintErr;self.alert=threadAlert;Module["instantiateWasm"]=function(info,receiveInstance){var instance=new WebAssembly.Instance(Module["wasmModule"],info);receiveInstance(instance);Module["wasmModule"]=null;return instance.exports};function moduleLoaded(){}self.onmessage=function(e){try{if(e.data.cmd==="load"){Module["wasmModule"]=e.data.wasmModule;Module["wasmMemory"]=e.data.wasmMemory;Module["buffer"]=Module["wasmMemory"].buffer;Module["ENVIRONMENT_IS_PTHREAD"]=true;(e.data.urlOrBlob?import(e.data.urlOrBlob):import("./jxl_enc_mt_simd.js")).then(function(exports){return exports.default(Module)}).then(function(instance){Module=instance;moduleLoaded()})}else if(e.data.cmd==="objectTransfer"){Module["PThread"].receiveObjectTransfer(e.data)}else if(e.data.cmd==="run"){Module["__performance_now_clock_drift"]=performance.now()-e.data.time;Module["__emscripten_thread_init"](e.data.threadInfoStruct,0,0);var max=e.data.stackBase;var top=e.data.stackBase+e.data.stackSize;Module["establishStackSpace"](top,max);Module["PThread"].receiveObjectTransfer(e.data);Module["PThread"].threadInit();if(!initializedJS){Module["___embind_register_native_and_builtin_types"]();initializedJS=true}try{var result=Module["invokeEntryPoint"](e.data.start_routine,e.data.arg);if(Module["keepRuntimeAlive"]()){Module["PThread"].setExitStatus(result)}else{Module["PThread"].threadExit(result)}}catch(ex){if(ex==="Canceled!"){Module["PThread"].threadCancel()}else if(ex!="unwind"){if(ex instanceof Module["ExitStatus"]){if(Module["keepRuntimeAlive"]()){}else{Module["PThread"].threadExit(ex.status)}}else{Module["PThread"].threadExit(-2);throw ex}}}}else if(e.data.cmd==="cancel"){if(Module["_pthread_self"]()){Module["PThread"].threadCancel()}}else if(e.data.target==="setimmediate"){}else if(e.data.cmd==="processThreadQueue"){if(Module["_pthread_self"]()){Module["_emscripten_current_thread_process_queued_calls"]()}}else{err("worker.js received unknown command "+e.data.cmd);err(e.data)}}catch(ex){err("worker.js onmessage() captured an uncaught exception: "+ex);if(ex&&ex.stack)err(ex.stack);throw ex}};

codecs/jxl/package.json

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

codecs/mozjpeg/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/Makefile

@@ -0,0 +1,61 @@
+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))
+ENVIRONMENT = worker
+
+OUT_JS := enc/mozjpeg_enc.js enc/mozjpeg_node_enc.js dec/mozjpeg_node_dec.js
+OUT_WASM := $(OUT_JS:.js=.wasm)
+
+.PHONY: all clean
+
+all: $(OUT_JS)
+
+# Define dependencies for all variations of build artifacts.
+$(filter enc/%,$(OUT_JS)): enc/mozjpeg_enc.cpp
+$(filter dec/%,$(OUT_JS)): dec/mozjpeg_dec.cpp
+
+enc/mozjpeg_node_enc.js dec/mozjpeg_node_dec.js: ENVIRONMENT = node
+
+%.js: $(CODEC_OUT)
+	$(CXX) \
+		-I $(CODEC_DIR) \
+		${CXXFLAGS} \
+		${LDFLAGS} \
+		--bind \
+		-s ENVIRONMENT=$(ENVIRONMENT) \
+		-s EXPORT_ES6=1 \
+		-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 $(CODEC_DIR) && ./configure \
+		--disable-shared \
+		--without-turbojpeg \
+		--without-simd \
+		--without-arith-enc \
+		--without-arith-dec \
+		--with-build-date=squoosh
+		# ^ If not provided with a dummy value, MozJPEG includes a build date in the
+		# binary as part of the version string, making binaries different each time.
+
+$(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