1.11.3

* Updates to analytics experiments

* adjust hover color on install button

* adjust event action names

* adjust utm_source for share_target launches

Co-authored-by: Jake Archibald <jaffathecake@gmail.com>

.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

.firebaserc

@@ -1,5 +0,0 @@
-{
-  "projects": {
-    "default": "squoosh-beta"
-  }
-}

.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.

.gitignore

@@ -3,3 +3,4 @@ node_modules
 /*.log
 *.scss.d.ts
 *.css.d.ts
+*.o

.nvmrc

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

.travis.yml

@@ -0,0 +1,7 @@
+language: node_js
+cache: npm
+script: npm run build
+after_success: npm run sizereport
+os:
+  - linux
+  - windows

README.md

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

_headers.ejs

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

_redirects.ejs

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

codecs/README.md

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

codecs/hqx/.gitignore

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

codecs/hqx/Cargo.toml

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

codecs/hqx/Dockerfile

@@ -0,0 +1,12 @@
+FROM rust
+RUN rustup target add wasm32-unknown-unknown
+RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+
+RUN mkdir /opt/binaryen && \
+ curl -L https://github.com/WebAssembly/binaryen/releases/download/1.38.32/binaryen-1.38.32-x86-linux.tar.gz  | tar -xzf - -C /opt/binaryen --strip 1
+
+RUN mkdir /opt/wabt && \
+ curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+
+ENV PATH="/opt/binaryen:/opt/wabt:${PATH}"
+WORKDIR /src

codecs/hqx/build.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+set -e
+
+echo "============================================="
+echo "Compiling wasm"
+echo "============================================="
+(
+  wasm-pack build
+  wasm-strip pkg/squooshhqx_bg.wasm
+  echo "Optimising Wasm so it doesn't break Chrome (this takes like 10-15mins. get a cup of tea)"
+  echo "Once https://crbug.com/974804 is fixed, we can remove this step"
+  wasm-opt -Os --no-validation -o pkg/squooshhqx_bg.wasm pkg/squooshhqx_bg.wasm
+  rm pkg/.gitignore
+)
+echo "============================================="
+echo "Compiling wasm  done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull ubuntu\`"
+echo "Run \`docker pull rust\`"
+echo "Run \`docker build -t squoosh-hqx .\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/hqx/package-lock.json

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

codecs/hqx/package.json

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

codecs/hqx/pkg/package.json

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

codecs/hqx/pkg/squooshhqx.d.ts

@@ -0,0 +1,9 @@
+/* tslint:disable */
+/**
+* @param {Uint32Array} input_image 
+* @param {number} input_width 
+* @param {number} input_height 
+* @param {number} factor 
+* @returns {Uint32Array} 
+*/
+export function resize(input_image: Uint32Array, input_width: number, input_height: number, factor: number): Uint32Array;

codecs/hqx/pkg/squooshhqx.js

@@ -0,0 +1,46 @@
+import * as wasm from './squooshhqx_bg.wasm';
+
+let cachegetUint32Memory = null;
+function getUint32Memory() {
+    if (cachegetUint32Memory === null || cachegetUint32Memory.buffer !== wasm.memory.buffer) {
+        cachegetUint32Memory = new Uint32Array(wasm.memory.buffer);
+    }
+    return cachegetUint32Memory;
+}
+
+let WASM_VECTOR_LEN = 0;
+
+function passArray32ToWasm(arg) {
+    const ptr = wasm.__wbindgen_malloc(arg.length * 4);
+    getUint32Memory().set(arg, ptr / 4);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+let cachegetInt32Memory = null;
+function getInt32Memory() {
+    if (cachegetInt32Memory === null || cachegetInt32Memory.buffer !== wasm.memory.buffer) {
+        cachegetInt32Memory = new Int32Array(wasm.memory.buffer);
+    }
+    return cachegetInt32Memory;
+}
+
+function getArrayU32FromWasm(ptr, len) {
+    return getUint32Memory().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) {
+    const retptr = 8;
+    const ret = wasm.resize(retptr, passArray32ToWasm(input_image), WASM_VECTOR_LEN, input_width, input_height, factor);
+    const memi32 = getInt32Memory();
+    const v0 = getArrayU32FromWasm(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1]).slice();
+    wasm.__wbindgen_free(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1] * 4);
+    return v0;
+}
+

codecs/hqx/pkg/squooshhqx_bg.d.ts

@@ -0,0 +1,5 @@
+/* tslint:disable */
+export const memory: WebAssembly.Memory;
+export function __wbindgen_malloc(a: number): number;
+export function __wbindgen_free(a: number, b: number): void;
+export function resize(a: number, b: number, c: number, d: number, e: number, f: number): void;

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/README.md

@@ -0,0 +1,30 @@
+# ImageQuant
+
+- Source: <https://github.com/ImageOptim/libimagequant>
+- Version: v2.12.1
+
+## Dependencies
+
+- Docker
+
+## Example
+
+See `example.html`
+
+## API
+
+### `int version()`
+
+Returns the version of libimagequant as a number. va.b.c is encoded as 0x0a0b0c
+
+### `RawImage quantize(std::string buffer, int image_width, int image_height, int numColors, float dithering)`
+
+Quantizes the given images, using at most `numColors`, a value between 2 and 256. `dithering` is a value between 0 and 1 controlling the amount of dithering. `RawImage` is a class with 3 fields: `buffer`, `width`, and `height`.
+
+### `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

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+set -e
+
+export EM_CACHE="${PWD}/node_modules/.em_cache"
+export OPTIMIZE="-Os -flto --llvm-lto 1"
+export LDFLAGS="${OPTIMIZE}"
+export CFLAGS="${OPTIMIZE}"
+export CPPFLAGS="${OPTIMIZE}"
+
+echo "============================================="
+echo "Compiling libimagequant"
+echo "============================================="
+(
+  cd node_modules/libimagequant
+  emconfigure ./configure --disable-sse
+  emmake make static -j`nproc`
+)
+echo "============================================="
+echo "Compiling wasm module"
+echo "============================================="
+(
+  emcc \
+    --bind \
+    ${OPTIMIZE} \
+    --closure 1 \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="imagequant"' \
+    -I node_modules/libimagequant \
+    -o ./imagequant.js \
+    --std=c++11 \
+    imagequant.cpp \
+    node_modules/libimagequant/libimagequant.a
+)
+echo "============================================="
+echo "Compiling wasm module done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/imagequant/example.html

@@ -0,0 +1,41 @@
+<!doctype html>
+<style>
+  canvas {
+    image-rendering: pixelated;
+  }
+</style>
+<script src='imagequant.js'></script>
+<script>
+  const Module = imagequant();
+
+  async function loadImage(src) {
+    // Load image
+    const img = document.createElement('img');
+    img.src = src;
+    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];
+    // Draw image onto canvas
+    const ctx = canvas.getContext('2d');
+    ctx.drawImage(img, 0, 0);
+    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();
+
+    const imageData = new ImageData(new Uint8ClampedArray(rawImage.buffer), rawImage.width, rawImage.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);
+  };
+</script>

codecs/imagequant/imagequant.cpp

@@ -0,0 +1,245 @@
+#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);
+}
+
+class RawImage {
+ public:
+  val buffer;
+  int width;
+  int height;
+
+  RawImage(val b, int w, int h) : buffer(b), width(w), height(h) {}
+};
+
+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_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);
+  // 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;
+  }
+  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};
+}
+
+const liq_color zx_colors[] = {
+    {.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.
+ */
+RawImage zx_quantize(std::string rawimage, int image_width, int image_height, float dithering) {
+  const uint8_t* image_buffer = (uint8_t*)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);
+
+  // For each 8x8 grid
+  for (int block_start_y = 0; block_start_y < image_height; block_start_y += 8) {
+    for (int block_start_x = 0; block_start_x < image_width; block_start_x += 8) {
+      int color_popularity[15] = {0};
+      int block_index = 0;
+      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 (block_start_y + block_height > image_height) {
+        block_height = image_height - block_start_y;
+      }
+
+      if (block_start_x + block_width > image_width) {
+        block_width = image_width - block_start_x;
+      }
+
+      // 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 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];
+
+            // 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);
+
+            if (distance < smallest_distance) {
+              winning_index = color_index;
+              smallest_distance = distance;
+            }
+          }
+          color_popularity[winning_index]++;
+        }
+      }
+
+      // Get the three most popular colours for the block.
+      int first_color_index = 0;
+      int second_color_index = 0;
+      int third_color_index = 0;
+      int highest_popularity = -1;
+      int second_highest_popularity = -1;
+      int third_highest_popularity = -1;
+
+      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:
+          third_color_index = second_color_index;
+          third_highest_popularity = second_highest_popularity;
+          second_color_index = first_color_index;
+          second_highest_popularity = highest_popularity;
+          first_color_index = color_index;
+          highest_popularity = color_popularity[color_index];
+        } else if (color_popularity[color_index] > second_highest_popularity) {
+          third_color_index = second_color_index;
+          third_highest_popularity = second_highest_popularity;
+          second_color_index = color_index;
+          second_highest_popularity = color_popularity[color_index];
+        } else if (color_popularity[color_index] > third_highest_popularity) {
+          third_color_index = color_index;
+          third_highest_popularity = color_popularity[color_index];
+        }
+      }
+
+      // 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) {
+          if (first_color_index >= 8 && second_color_index < 8) {
+            // Make the second color bright
+            second_color_index = second_color_index + 7;
+          } else if (first_color_index < 8 && second_color_index >= 8) {
+            // Make the second color regular
+            second_color_index = second_color_index - 7;
+          }
+        }
+
+        // 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;
+      }
+
+      // 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);
+
+      // 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;
+        }
+      }
+
+      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);
+}
+
+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

@@ -0,0 +1,15 @@
+interface RawImage {
+  buffer: Uint8Array;
+  width: number;
+  height: number;
+}
+
+interface QuantizerModule extends EmscriptenWasm.Module {
+  quantize(data: BufferSource, width: number, height: number, numColors: number, dither: number): RawImage;
+  zx_quantize(data: BufferSource, width: number, height: number, dither: number): RawImage;
+  free_result(): void;
+}
+
+export default function(opts: EmscriptenWasm.ModuleOpts): QuantizerModule;
+
+

codecs/imagequant/imagequant.js

@@ -0,0 +1,81 @@
+
+var imagequant = (function() {
+  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
+  if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
+  return (
+function(imagequant) {
+  imagequant = imagequant || {};
+
+var e;e||(e=typeof imagequant !== 'undefined' ? imagequant : {});var r={},t;for(t in e)e.hasOwnProperty(t)&&(r[t]=e[t]);var aa=!1,z=!1,ba=!1,ca=!1;aa="object"===typeof window;z="function"===typeof importScripts;ba="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;ca=!aa&&!ba&&!z;var A="",da,B,ea,ha;
+if(ba)A=z?require("path").dirname(A)+"/":__dirname+"/",da=function(a,b){ea||(ea=require("fs"));ha||(ha=require("path"));a=ha.normalize(a);return ea.readFileSync(a,b?null:"utf8")},B=function(a){a=da(a,!0);a.buffer||(a=new Uint8Array(a));a.buffer||C("Assertion failed: undefined");return a},1<process.argv.length&&process.argv[1].replace(/\\/g,"/"),process.argv.slice(2),process.on("uncaughtException",function(a){throw a;}),process.on("unhandledRejection",C),e.inspect=function(){return"[Emscripten Module object]"};
+else if(ca)"undefined"!=typeof read&&(da=function(a){return read(a)}),B=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");"object"===typeof a||C("Assertion failed: undefined");return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(aa||z)z?A=self.location.href:document.currentScript&&(A=document.currentScript.src),_scriptDir&&
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+function ma(a,b,c){var d=b+c;for(c=b;a[c]&&!(c>=d);)++c;if(16<c-b&&a.subarray&&la)return la.decode(a.subarray(b,c));for(d="";b<c;){var f=a[b++];if(f&128){var g=a[b++]&63;if(192==(f&224))d+=String.fromCharCode((f&31)<<6|g);else{var n=a[b++]&63;f=224==(f&240)?(f&15)<<12|g<<6|n:(f&7)<<18|g<<12|n<<6|a[b++]&63;65536>f?d+=String.fromCharCode(f):(f-=65536,d+=String.fromCharCode(55296|f>>10,56320|f&1023))}}else d+=String.fromCharCode(f)}return d}
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+function pa(a){var b;for(b=a>>1;I[b];)++b;b<<=1;if(32<b-a&&oa)return oa.decode(H.subarray(a,b));b=0;for(var c="";;){var d=I[a+2*b>>1];if(0==d)return c;++b;c+=String.fromCharCode(d)}}function qa(a,b,c){void 0===c&&(c=2147483647);if(2>c)return 0;c-=2;var d=b;c=c<2*a.length?c/2:a.length;for(var f=0;f<c;++f)I[b>>1]=a.charCodeAt(f),b+=2;I[b>>1]=0;return b-d}function ra(a){return 2*a.length}
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+fromWireType:g,toWireType:function(l,m){if("number"!==typeof m&&"boolean"!==typeof m)throw new TypeError('Cannot convert "'+V(m)+'" to '+this.name);if(m<d||m>f)throw new TypeError('Passing a number "'+V(m)+'" from JS side to C/C++ side to an argument of type "'+b+'", which is outside the valid range ['+d+", "+f+"]!");return k?m>>>0:m|0},argPackAdvance:8,readValueFromPointer:Hb(b,n,0!==d),ba:null})},a:function(a,b,c){function d(g){g>>=2;var n=L;return new f(K,n[g+1],n[g])}var f=[Int8Array,Uint8Array,
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+String.fromCharCode(H[d+4+g]);l=l.join("")}Y(d);return l},toWireType:function(d,f){f instanceof ArrayBuffer&&(f=new Uint8Array(f));var g="string"===typeof f;g||f instanceof Uint8Array||f instanceof Uint8ClampedArray||f instanceof Int8Array||S("Cannot pass non-string to std::string");var n=(c&&g?function(){for(var l=0,m=0;m<f.length;++m){var q=f.charCodeAt(m);55296<=q&&57343>=q&&(q=65536+((q&1023)<<10)|f.charCodeAt(++m)&1023);127>=q?++l:l=2047>=q?l+2:65535>=q?l+3:l+4}return l}:function(){return f.length})(),
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+name:b,argPackAdvance:0,fromWireType:function(){},toWireType:function(){}})},g:Db,w:function(a){4<a&&(Z[a].na+=1)},k:function(a,b){var c=R[a];void 0===c&&S("_emval_take_value has unknown type "+xb(a));a=c.readValueFromPointer(b);return nb(a)},m:function(){C()},s:function(a,b,c){H.copyWithin(a,b,b+c)},c:function(a){var b=H.length;if(2147418112<a)return!1;for(var c=1;4>=c;c*=2){var d=b*(1+.2/c);d=Math.min(d,a+100663296);d=Math.max(16777216,a,d);0<d%65536&&(d+=65536-d%65536);a:{try{G.grow(Math.min(2147418112,
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+var Ma=e.___wasm_call_ctors=function(){return(Ma=e.___wasm_call_ctors=e.asm.x).apply(null,arguments)},Lb=e._malloc=function(){return(Lb=e._malloc=e.asm.y).apply(null,arguments)},Y=e._free=function(){return(Y=e._free=e.asm.z).apply(null,arguments)},yb=e.___getTypeName=function(){return(yb=e.___getTypeName=e.asm.A).apply(null,arguments)};e.___embind_register_native_and_builtin_types=function(){return(e.___embind_register_native_and_builtin_types=e.asm.B).apply(null,arguments)};
+e.dynCall_ii=function(){return(e.dynCall_ii=e.asm.C).apply(null,arguments)};e.dynCall_vi=function(){return(e.dynCall_vi=e.asm.D).apply(null,arguments)};e.dynCall_iii=function(){return(e.dynCall_iii=e.asm.E).apply(null,arguments)};e.dynCall_viii=function(){return(e.dynCall_viii=e.asm.F).apply(null,arguments)};e.dynCall_iiiiiif=function(){return(e.dynCall_iiiiiif=e.asm.G).apply(null,arguments)};e.dynCall_viiiiif=function(){return(e.dynCall_viiiiif=e.asm.H).apply(null,arguments)};
+e.dynCall_iiiiif=function(){return(e.dynCall_iiiiif=e.asm.I).apply(null,arguments)};e.dynCall_viiiif=function(){return(e.dynCall_viiiif=e.asm.J).apply(null,arguments)};e.dynCall_i=function(){return(e.dynCall_i=e.asm.K).apply(null,arguments)};e.dynCall_v=function(){return(e.dynCall_v=e.asm.L).apply(null,arguments)};e.dynCall_vif=function(){return(e.dynCall_vif=e.asm.M).apply(null,arguments)};e.dynCall_iidiiii=function(){return(e.dynCall_iidiiii=e.asm.N).apply(null,arguments)};
+e.dynCall_vii=function(){return(e.dynCall_vii=e.asm.O).apply(null,arguments)};e.dynCall_iiii=function(){return(e.dynCall_iiii=e.asm.P).apply(null,arguments)};e.dynCall_jiji=function(){return(e.dynCall_jiji=e.asm.Q).apply(null,arguments)};e.dynCall_viiiiii=function(){return(e.dynCall_viiiiii=e.asm.R).apply(null,arguments)};e.dynCall_viiiii=function(){return(e.dynCall_viiiii=e.asm.S).apply(null,arguments)};e.dynCall_viiii=function(){return(e.dynCall_viiii=e.asm.T).apply(null,arguments)};e.asm=Nb;var Ob;
+e.then=function(a){if(Ob)a(e);else{var b=e.onRuntimeInitialized;e.onRuntimeInitialized=function(){b&&b();a(e)}}return e};N=function Pb(){Ob||Qb();Ob||(N=Pb)};
+function Qb(){function a(){if(!Ob&&(Ob=!0,e.calledRun=!0,!ka)){Ba(Da);Ba(Ea);if(e.onRuntimeInitialized)e.onRuntimeInitialized();if(e.postRun)for("function"==typeof e.postRun&&(e.postRun=[e.postRun]);e.postRun.length;){var b=e.postRun.shift();Fa.unshift(b)}Ba(Fa)}}if(!(0<M)){if(e.preRun)for("function"==typeof e.preRun&&(e.preRun=[e.preRun]);e.preRun.length;)Ga();Ba(Ca);0<M||(e.setStatus?(e.setStatus("Running..."),setTimeout(function(){setTimeout(function(){e.setStatus("")},1);a()},1)):a())}}
+e.run=Qb;if(e.preInit)for("function"==typeof e.preInit&&(e.preInit=[e.preInit]);0<e.preInit.length;)e.preInit.pop()();noExitRuntime=!0;Qb();
+
+
+  return imagequant
+}
+);
+})();
+if (typeof exports === 'object' && typeof module === 'object')
+      module.exports = imagequant;
+    else if (typeof define === 'function' && define['amd'])
+      define([], function() { return imagequant; });
+    else if (typeof exports === 'object')
+      exports["imagequant"] = imagequant;
+    

codecs/imagequant/package-lock.json

@@ -1,5 +1,5 @@
 {
-  "name": "webp_enc",
+  "name": "imagequant",
   "requires": true,
   "lockfileVersion": 1,
   "dependencies": {

codecs/imagequant/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "imagequant",
+  "scripts": {
+    "install": "napa",
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
+  },
+  "napa": {
+    "libimagequant": "ImageOptim/libimagequant#2.12.1"
+  },
+  "devDependencies": {
+    "napa": "3.0.0"
+  }
+}

codecs/mozjpeg_enc/README.md

@@ -6,8 +6,6 @@
 ## Dependencies
 
 - Docker
-- Automake
-- pkg-config
 
 ## Example
 
@@ -19,26 +17,31 @@ See `example.html`
 
 Returns the version of MozJPEG as a number. va.b.c is encoded as 0x0a0b0c
 
-### `uint8_t* create_buffer(int width, int height)`
-
-Allocates an RGBA buffer for an image with the given dimension.
-
-### `void destroy_buffer(uint8_t* p)`
-
-Frees a buffer created with `create_buffer`.
-
-### `void encode(uint8_t* image_buffer, int image_width, int image_height, int quality)`
-
-Encodes the given image with given dimension to JPEG. `quality` is a number between 0 and 100. The higher the number, the better the quality of the encoded image. The result is implicitly stored and can be accessed using the `get_result_*()` functions.
-
 ### `void free_result()`
 
 Frees the result created by `encode()`.
 
-### `int get_result_pointer()`
+### `Uint8Array encode(std::string image_in, int image_width, int image_height, MozJpegOptions opts)`
 
-Returns the pointer to the start of the buffer holding the encoded data.
+Encodes the given image with given dimension to JPEG. Options looks like this:
 
-### `int get_result_size()`
-
-Returns the length of the buffer holding the encoded data.
+```c++
+struct MozJpegOptions {
+  int quality;
+  bool baseline;
+  bool arithmetic;
+  bool progressive;
+  bool optimize_coding;
+  int smoothing;
+  int color_space;
+  int quant_table;
+  bool trellis_multipass;
+  bool trellis_opt_zero;
+  bool trellis_opt_table;
+  int trellis_loops;
+  bool auto_subsample;
+  int chroma_subsample;
+  bool separate_chroma_quality;
+  int chroma_quality;
+};
+```

codecs/mozjpeg_enc/build.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+set -e
+
+export EM_CACHE="${PWD}/node_modules/.em_cache"
+export OPTIMIZE="-Os -flto --llvm-lto 1"
+export LDFLAGS="${OPTIMIZE}"
+export CFLAGS="${OPTIMIZE}"
+export CPPFLAGS="${OPTIMIZE}"
+
+apt-get update
+apt-get install -qqy autoconf libtool libpng-dev pkg-config
+
+echo "============================================="
+echo "Compiling mozjpeg"
+echo "============================================="
+(
+  cd node_modules/mozjpeg
+  autoreconf -iv
+  emconfigure ./configure -C --without-simd
+  emmake make libjpeg.la rdswitch.o -j`nproc`
+)
+echo "============================================="
+echo "Compiling mozjpeg done"
+echo "============================================="
+
+echo "============================================="
+echo "Compiling wasm bindings"
+echo "============================================="
+(
+  emcc \
+    --bind \
+    ${OPTIMIZE} \
+    --closure 1 \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="mozjpeg_enc"' \
+    -I node_modules/mozjpeg \
+    -o ./mozjpeg_enc.js \
+    -std=c++11 \
+    mozjpeg_enc.cpp \
+    node_modules/mozjpeg/.libs/libjpeg.a \
+    node_modules/mozjpeg/rdswitch.o
+)
+echo "============================================="
+echo "Compiling wasm bindings done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/mozjpeg_enc/example.html

@@ -1,7 +1,7 @@
 <!doctype html>
 <script src='mozjpeg_enc.js'></script>
 <script>
-  const Module = mozjpeg_enc();
+  const module = mozjpeg_enc();
 
   async function loadImage(src) {
     // Load image
@@ -17,27 +17,27 @@
     return ctx.getImageData(0, 0, img.width, img.height);
   }
 
-  Module.onRuntimeInitialized = async _ => {
-    const api = {
-      version: Module.cwrap('version', 'number', []),
-      create_buffer: Module.cwrap('create_buffer', 'number', ['number', 'number']),
-      destroy_buffer: Module.cwrap('destroy_buffer', '', ['number']),
-      encode: Module.cwrap('encode', '', ['number', 'number', 'number', 'number']),
-      free_result: Module.cwrap('free_result', '', ['number']),
-      get_result_pointer: Module.cwrap('get_result_pointer', 'number', []),
-      get_result_size: Module.cwrap('get_result_size', 'number', []),
-    };
-    console.log('Version:', api.version().toString(16));
+  module.onRuntimeInitialized = async _ => {
+    console.log('Version:', module.version().toString(16));
     const image = await loadImage('../example.png');
-    const p = api.create_buffer(image.width, image.height);
-    Module.HEAP8.set(image.data, p);
-    api.encode(p, image.width, image.height, 2);
-    const resultPointer = api.get_result_pointer();
-    const resultSize = api.get_result_size();
-    const resultView = new Uint8Array(Module.HEAP8.buffer, resultPointer, resultSize);
-    const result = new Uint8Array(resultView);
-    api.free_result(resultPointer);
-    api.destroy_buffer(p);
+    const result = module.encode(image.data, image.width, image.height, {
+      quality: 75,
+      baseline: false,
+      arithmetic: false,
+      progressive: true,
+      optimize_coding: true,
+      smoothing: 0,
+      color_space: 3,
+      quant_table: 3,
+      trellis_multipass: false,
+      trellis_opt_zero: false,
+      trellis_opt_table: false,
+      trellis_loops: 1,
+      auto_subsample: true,
+      chroma_subsample: 2,
+      separate_chroma_quality: false,
+      chroma_quality: 75,
+    });
 
     const blob = new Blob([result], {type: 'image/jpeg'});
     const blobURL = URL.createObjectURL(blob);

codecs/mozjpeg_enc/mozjpeg_enc.cpp

@@ -1,17 +1,44 @@
-#include "emscripten.h"
-#include <stdlib.h>
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
 #include <inttypes.h>
-#include <stdio.h>
 #include <setjmp.h>
+#include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
-#include "jpeglib.h"
 #include "config.h"
+#include "jpeglib.h"
 
-// MozJPEG doesn’t expose a numeric version, so I have to do some fun C macro hackery to turn it into a string. More details here: https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html
+extern "C" {
+#include "cdjpeg.h"
+}
+
+using namespace emscripten;
+
+// MozJPEG doesn’t expose a numeric version, so I have to do some fun C macro
+// hackery to turn it into a string. More details here:
+// https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html
 #define xstr(s) str(s)
 #define str(s) #s
 
-EMSCRIPTEN_KEEPALIVE
+struct MozJpegOptions {
+  int quality;
+  bool baseline;
+  bool arithmetic;
+  bool progressive;
+  bool optimize_coding;
+  int smoothing;
+  int color_space;
+  int quant_table;
+  bool trellis_multipass;
+  bool trellis_opt_zero;
+  bool trellis_opt_table;
+  int trellis_loops;
+  bool auto_subsample;
+  int chroma_subsample;
+  bool separate_chroma_quality;
+  int chroma_quality;
+};
+
 int version() {
   char buffer[] = xstr(MOZJPEG_VERSION);
   int version = 0;
@@ -28,40 +55,22 @@ int version() {
   return version;
 }
 
-EMSCRIPTEN_KEEPALIVE
-uint8_t* create_buffer(int width, int height) {
-  return malloc(width * height * 4 * sizeof(uint8_t));
-}
+uint8_t* last_result;
+struct jpeg_compress_struct cinfo;
 
-EMSCRIPTEN_KEEPALIVE
-void destroy_buffer(uint8_t* p) {
-  free(p);
-}
-
-int result[2];
-EMSCRIPTEN_KEEPALIVE
-void encode(uint8_t* image_buffer, int image_width, int image_height, int quality) {
-  // Manually convert RGBA data into RGB
-  for(int y = 0; y < image_height; y++) {
-    for(int x = 0; x < image_width; x++) {
-      image_buffer[(y*image_width + x)*3 + 0] = image_buffer[(y*image_width + x)*4 + 0];
-      image_buffer[(y*image_width + x)*3 + 1] = image_buffer[(y*image_width + x)*4 + 1];
-      image_buffer[(y*image_width + x)*3 + 2] = image_buffer[(y*image_width + x)*4 + 2];
-    }
-  }
+val encode(std::string image_in, int image_width, int image_height, MozJpegOptions opts) {
+  uint8_t* image_buffer = (uint8_t*)image_in.c_str();
 
   // The code below is basically the `write_JPEG_file` function from
   // https://github.com/mozilla/mozjpeg/blob/master/example.c
   // I just write to memory instead of a file.
 
-
   /* This struct contains the JPEG compression parameters and pointers to
    * working space (which is allocated as needed by the JPEG library).
    * It is possible to have several such structures, representing multiple
    * compression/decompression processes, in existence at once.  We refer
    * to any one struct (and its associated working data) as a "JPEG object".
    */
-  struct jpeg_compress_struct cinfo;
   /* This struct represents a JPEG error handler.  It is declared separately
    * because applications often want to supply a specialized error handler
    * (see the second half of this file for an example).  But here we just
@@ -109,18 +118,57 @@ void encode(uint8_t* image_buffer, int image_width, int image_height, int qualit
    */
   cinfo.image_width = image_width; /* image width and height, in pixels */
   cinfo.image_height = image_height;
-  cinfo.input_components = 3;           /* # of color components per pixel */
-  cinfo.in_color_space = JCS_RGB;       /* colorspace of input image */
+  cinfo.input_components = 4;          /* # of color components per pixel */
+  cinfo.in_color_space = JCS_EXT_RGBA; /* colorspace of input image */
   /* Now use the library's routine to set default compression parameters.
    * (You must set at least cinfo.in_color_space before calling this,
    * since the defaults depend on the source color space.)
    */
   jpeg_set_defaults(&cinfo);
-  /* Now you can set any non-default parameters you wish to.
-   * Here we just illustrate the use of quality (quantization table) scaling:
-   */
-  jpeg_set_quality(&cinfo, quality, TRUE /* limit to baseline-JPEG values */);
 
+  jpeg_set_colorspace(&cinfo, (J_COLOR_SPACE)opts.color_space);
+
+  if (opts.quant_table != -1) {
+    jpeg_c_set_int_param(&cinfo, JINT_BASE_QUANT_TBL_IDX, opts.quant_table);
+  }
+
+  cinfo.optimize_coding = opts.optimize_coding;
+
+  if (opts.arithmetic) {
+    cinfo.arith_code = TRUE;
+    cinfo.optimize_coding = FALSE;
+  }
+
+  cinfo.smoothing_factor = opts.smoothing;
+
+  jpeg_c_set_bool_param(&cinfo, JBOOLEAN_USE_SCANS_IN_TRELLIS, opts.trellis_multipass);
+  jpeg_c_set_bool_param(&cinfo, JBOOLEAN_TRELLIS_EOB_OPT, opts.trellis_opt_zero);
+  jpeg_c_set_bool_param(&cinfo, JBOOLEAN_TRELLIS_Q_OPT, opts.trellis_opt_table);
+  jpeg_c_set_int_param(&cinfo, JINT_TRELLIS_NUM_LOOPS, opts.trellis_loops);
+
+  // A little hacky to build a string for this, but it means we can use
+  // set_quality_ratings which does some useful heuristic stuff.
+  std::string quality_str = std::to_string(opts.quality);
+
+  if (opts.separate_chroma_quality && opts.color_space == JCS_YCbCr) {
+    quality_str += "," + std::to_string(opts.chroma_quality);
+  }
+
+  char const* pqual = quality_str.c_str();
+
+  set_quality_ratings(&cinfo, (char*)pqual, opts.baseline);
+
+  if (!opts.auto_subsample && opts.color_space == JCS_YCbCr) {
+    cinfo.comp_info[0].h_samp_factor = opts.chroma_subsample;
+    cinfo.comp_info[0].v_samp_factor = opts.chroma_subsample;
+  }
+
+  if (!opts.baseline && opts.progressive) {
+    jpeg_simple_progression(&cinfo);
+  } else {
+    cinfo.num_scans = 0;
+    cinfo.scan_info = NULL;
+  }
   /* Step 4: Start compressor */
 
   /* TRUE ensures that we will write a complete interchange-JPEG file.
@@ -136,7 +184,7 @@ void encode(uint8_t* image_buffer, int image_width, int image_height, int qualit
    * To keep things simple, we pass one scanline per call; you can pass
    * more if you wish, though.
    */
-  row_stride = image_width * 3; /* JSAMPLEs per row in image_buffer */
+  row_stride = image_width * 4; /* JSAMPLEs per row in image_buffer */
 
   while (cinfo.next_scanline < cinfo.image_height) {
     /* jpeg_write_scanlines expects an array of pointers to scanlines.
@@ -152,27 +200,37 @@ void encode(uint8_t* image_buffer, int image_width, int image_height, int qualit
   jpeg_finish_compress(&cinfo);
   /* Step 7: release JPEG compression object */
 
-  result[0] = (int)output;
-  result[1] = size;
-
-  /* This is an important step since it will release a good deal of memory. */
-  jpeg_destroy_compress(&cinfo);
+  last_result = output;
 
   /* And we're done! */
+  return val(typed_memory_view(size, output));
 }
 
-EMSCRIPTEN_KEEPALIVE
 void free_result() {
-  free(result[0]); // not sure if this is right with mozjpeg
+  /* This is an important step since it will release a good deal of memory. */
+  jpeg_destroy_compress(&cinfo);
 }
 
-EMSCRIPTEN_KEEPALIVE
-int get_result_pointer() {
-  return result[0];
-}
+EMSCRIPTEN_BINDINGS(my_module) {
+  value_object<MozJpegOptions>("MozJpegOptions")
+      .field("quality", &MozJpegOptions::quality)
+      .field("baseline", &MozJpegOptions::baseline)
+      .field("arithmetic", &MozJpegOptions::arithmetic)
+      .field("progressive", &MozJpegOptions::progressive)
+      .field("optimize_coding", &MozJpegOptions::optimize_coding)
+      .field("smoothing", &MozJpegOptions::smoothing)
+      .field("color_space", &MozJpegOptions::color_space)
+      .field("quant_table", &MozJpegOptions::quant_table)
+      .field("trellis_multipass", &MozJpegOptions::trellis_multipass)
+      .field("trellis_opt_zero", &MozJpegOptions::trellis_opt_zero)
+      .field("trellis_opt_table", &MozJpegOptions::trellis_opt_table)
+      .field("trellis_loops", &MozJpegOptions::trellis_loops)
+      .field("chroma_subsample", &MozJpegOptions::chroma_subsample)
+      .field("auto_subsample", &MozJpegOptions::auto_subsample)
+      .field("separate_chroma_quality", &MozJpegOptions::separate_chroma_quality)
+      .field("chroma_quality", &MozJpegOptions::chroma_quality);
 
-EMSCRIPTEN_KEEPALIVE
-int get_result_size() {
-  return result[1];
+  function("version", &version);
+  function("encode", &encode);
+  function("free_result", &free_result);
 }
-

codecs/mozjpeg_enc/mozjpeg_enc.d.ts

@@ -1 +1,8 @@
-export default function(opts: EmscriptenWasm.ModuleOpts): EmscriptenWasm.Module;
+import { EncodeOptions } from '../../src/codecs/mozjpeg/encoder-meta';
+
+interface MozJPEGModule extends EmscriptenWasm.Module {
+  encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array;
+  free_result(): void;
+}
+
+export default function(opts: EmscriptenWasm.ModuleOpts): MozJPEGModule;

codecs/mozjpeg_enc/package.json

@@ -2,14 +2,12 @@
   "name": "mozjpeg_enc",
   "scripts": {
     "install": "napa",
-    "build": "npm run build:library && npm run build:wasm",
-    "build:library": "cd node_modules/mozjpeg && autoreconf -fiv && docker run --rm -v $(pwd):/src trzeci/emscripten emconfigure ./configure --without-simd && docker run --rm -v $(pwd):/src trzeci/emscripten emmake make libjpeg.la",
-    "build:wasm": "docker run --rm -v $(pwd):/src trzeci/emscripten emcc -O3 -s WASM=1 -s EXTRA_EXPORTED_RUNTIME_METHODS='[\"cwrap\"]' -s ALLOW_MEMORY_GROWTH=1 -s MODULARIZE=1 -s 'EXPORT_NAME=\"mozjpeg_enc\"' -I node_modules/mozjpeg -o ./mozjpeg_enc.js mozjpeg_enc.c node_modules/mozjpeg/.libs/libjpeg.a"
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
   },
   "napa": {
     "mozjpeg": "mozilla/mozjpeg#v3.3.1"
   },
   "devDependencies": {
-    "napa": "^3.0.0"
+    "napa": "3.0.0"
   }
 }

codecs/oxipng/.gitignore

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

codecs/oxipng/Cargo.lock

@@ -0,0 +1,502 @@
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+# It is not intended for manual editing.
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codecs/oxipng/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "oxipng"
+version = "0.1.0"
+authors = ["Ingvar Stepanyan <me@rreverser.com>"]
+edition = "2018"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+oxipng = { version = "2.3.0", default-features = false }
+wasm-bindgen = "0.2.48"
+log = { version = "0.4", features = ["release_max_level_off"] }
+
+[profile.release]
+lto = true
+opt-level = "s"
+
+[patch.crates-io]
+oxipng = { git = "https://github.com/shssoichiro/oxipng.git", branch = "master" }

codecs/oxipng/Dockerfile

@@ -0,0 +1,12 @@
+FROM rust
+RUN rustup target add wasm32-unknown-unknown
+RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+
+RUN mkdir /opt/wabt && \
+ curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+
+RUN mkdir /opt/wasi-sdk && \
+  curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-8/wasi-sdk-8.0-linux.tar.gz | tar -xzf - -C /opt/wasi-sdk --strip 1
+
+ENV PATH="/opt/wabt:/opt/wasi-sdk/bin:${PATH}"
+WORKDIR /src

codecs/oxipng/build.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -e
+
+echo "============================================="
+echo "Compiling wasm"
+echo "============================================="
+(
+  wasm-pack build
+  wasm-strip pkg/oxipng_bg.wasm
+  rm pkg/.gitignore
+)
+echo "============================================="
+echo "Compiling wasm  done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull ubuntu\`"
+echo "Run \`docker pull rust\`"
+echo "Run \`docker build -t squoosh-oxipng .\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/oxipng/package-lock.json

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

codecs/oxipng/package.json

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

codecs/oxipng/pkg/oxipng.d.ts

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

codecs/oxipng/pkg/oxipng.js

@@ -0,0 +1,60 @@
+import * as wasm from './oxipng_bg.wasm';
+
+const lTextDecoder = typeof TextDecoder === 'undefined' ? require('util').TextDecoder : TextDecoder;
+
+let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+
+cachedTextDecoder.decode();
+
+let cachegetUint8Memory0 = null;
+function getUint8Memory0() {
+    if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== wasm.memory.buffer) {
+        cachegetUint8Memory0 = new Uint8Array(wasm.memory.buffer);
+    }
+    return cachegetUint8Memory0;
+}
+
+function getStringFromWasm0(ptr, len) {
+    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
+}
+
+let WASM_VECTOR_LEN = 0;
+
+function passArray8ToWasm0(arg, malloc) {
+    const ptr = malloc(arg.length * 1);
+    getUint8Memory0().set(arg, ptr / 1);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+let cachegetInt32Memory0 = null;
+function getInt32Memory0() {
+    if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== wasm.memory.buffer) {
+        cachegetInt32Memory0 = new Int32Array(wasm.memory.buffer);
+    }
+    return cachegetInt32Memory0;
+}
+
+function getArrayU8FromWasm0(ptr, len) {
+    return getUint8Memory0().subarray(ptr / 1, ptr / 1 + len);
+}
+/**
+* @param {Uint8Array} data
+* @param {number} level
+* @returns {Uint8Array}
+*/
+export function optimise(data, level) {
+    var ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_malloc);
+    var len0 = WASM_VECTOR_LEN;
+    wasm.optimise(8, ptr0, len0, level);
+    var r0 = getInt32Memory0()[8 / 4 + 0];
+    var r1 = getInt32Memory0()[8 / 4 + 1];
+    var v1 = getArrayU8FromWasm0(r0, r1).slice();
+    wasm.__wbindgen_free(r0, r1 * 1);
+    return v1;
+}
+
+export const __wbindgen_throw = function(arg0, arg1) {
+    throw new Error(getStringFromWasm0(arg0, arg1));
+};
+

codecs/oxipng/pkg/oxipng_bg.d.ts

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

codecs/oxipng/pkg/package.json

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

codecs/oxipng/src/lib.rs

@@ -0,0 +1,10 @@
+mod malloc_shim;
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(catch)]
+pub fn optimise(data: &[u8], level: u8) -> Vec<u8> {
+  let mut options = oxipng::Options::from_preset(level);
+  options.deflate = oxipng::Deflaters::Libdeflater;
+  oxipng::optimize_from_memory(data, &options).unwrap_throw()
+}

codecs/oxipng/src/malloc_shim.rs

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

codecs/resize/.gitignore

@@ -0,0 +1,6 @@
+**/*.rs.bk
+target
+Cargo.lock
+bin/
+pkg/README.md
+lut.inc

codecs/resize/Cargo.toml

@@ -0,0 +1,37 @@
+[package]
+name = "resize"
+version = "0.1.0"
+authors = ["Surma <surma@surma.link>"]
+
+[lib]
+#crate-type = ["cdylib", "rlib"]
+crate-type = ["cdylib"]
+
+[features]
+default = ["console_error_panic_hook", "wee_alloc"]
+
+[dependencies]
+cfg-if = "0.1.2"
+wasm-bindgen = "0.2.38"
+resize = "0.3.0"
+
+# The `console_error_panic_hook` crate provides better debugging of panics by
+# logging them with `console.error`. This is great for development, but requires
+# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
+# code size when deploying.
+console_error_panic_hook = { version = "0.1.1", optional = true }
+
+# `wee_alloc` is a tiny allocator for wasm that is only ~1K in code size
+# compared to the default allocator's ~10K. It is slower than the default
+# allocator, however.
+#
+# Unfortunately, `wee_alloc` requires nightly Rust when targeting wasm for now.
+wee_alloc = { version = "0.4.2", optional = true }
+
+[dev-dependencies]
+wasm-bindgen-test = "0.2"
+
+[profile.release]
+# Tell `rustc` to optimize for small code size.
+opt-level = "s"
+lto = true

codecs/resize/Dockerfile

@@ -0,0 +1,9 @@
+FROM rust
+RUN rustup target add wasm32-unknown-unknown
+RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+
+RUN mkdir /opt/wabt && \
+ curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+
+ENV PATH="/opt/wabt:${PATH}"
+WORKDIR /src

codecs/resize/build.rs

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

codecs/resize/build.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -e
+
+echo "============================================="
+echo "Compiling wasm"
+echo "============================================="
+(
+  wasm-pack build
+  wasm-strip pkg/resize_bg.wasm
+  rm pkg/.gitignore
+)
+echo "============================================="
+echo "Compiling wasm  done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull ubuntu\`"
+echo "Run \`docker pull rust\`"
+echo "Run \`docker build -t squoosh-resize .\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/resize/package-lock.json

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

codecs/resize/package.json

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

codecs/resize/pkg/package.json

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

codecs/resize/pkg/resize.d.ts

@@ -0,0 +1,13 @@
+/* tslint:disable */
+/**
+* @param {Uint8Array} input_image 
+* @param {number} input_width 
+* @param {number} input_height 
+* @param {number} output_width 
+* @param {number} output_height 
+* @param {number} typ_idx 
+* @param {boolean} premultiply 
+* @param {boolean} color_space_conversion 
+* @returns {Uint8Array} 
+*/
+export function resize(input_image: Uint8Array, input_width: number, input_height: number, output_width: number, output_height: number, typ_idx: number, premultiply: boolean, color_space_conversion: boolean): Uint8Array;

codecs/resize/pkg/resize.js

@@ -0,0 +1,50 @@
+import * as wasm from './resize_bg.wasm';
+
+let cachegetUint8Memory = null;
+function getUint8Memory() {
+    if (cachegetUint8Memory === null || cachegetUint8Memory.buffer !== wasm.memory.buffer) {
+        cachegetUint8Memory = new Uint8Array(wasm.memory.buffer);
+    }
+    return cachegetUint8Memory;
+}
+
+let WASM_VECTOR_LEN = 0;
+
+function passArray8ToWasm(arg) {
+    const ptr = wasm.__wbindgen_malloc(arg.length * 1);
+    getUint8Memory().set(arg, ptr / 1);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+let cachegetInt32Memory = null;
+function getInt32Memory() {
+    if (cachegetInt32Memory === null || cachegetInt32Memory.buffer !== wasm.memory.buffer) {
+        cachegetInt32Memory = new Int32Array(wasm.memory.buffer);
+    }
+    return cachegetInt32Memory;
+}
+
+function getArrayU8FromWasm(ptr, len) {
+    return getUint8Memory().subarray(ptr / 1, ptr / 1 + len);
+}
+/**
+* @param {Uint8Array} input_image
+* @param {number} input_width
+* @param {number} input_height
+* @param {number} output_width
+* @param {number} output_height
+* @param {number} typ_idx
+* @param {boolean} premultiply
+* @param {boolean} color_space_conversion
+* @returns {Uint8Array}
+*/
+export function resize(input_image, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion) {
+    const retptr = 8;
+    const ret = wasm.resize(retptr, passArray8ToWasm(input_image), WASM_VECTOR_LEN, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion);
+    const memi32 = getInt32Memory();
+    const v0 = getArrayU8FromWasm(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1]).slice();
+    wasm.__wbindgen_free(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1] * 1);
+    return v0;
+}
+

codecs/resize/pkg/resize_bg.d.ts

@@ -0,0 +1,5 @@
+/* tslint:disable */
+export const memory: WebAssembly.Memory;
+export function __wbindgen_malloc(a: number): number;
+export function __wbindgen_free(a: number, b: number): void;
+export function resize(a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number, i: number, j: number): void;

codecs/resize/src/lib.rs

@@ -0,0 +1,121 @@
+extern crate cfg_if;
+extern crate resize;
+extern crate wasm_bindgen;
+
+mod utils;
+
+use cfg_if::cfg_if;
+use resize::Pixel::RGBA;
+use resize::Type;
+use wasm_bindgen::prelude::*;
+
+mod srgb;
+use srgb::Clamp;
+
+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;
+    }
+}
+
+include!("./lut.inc");
+
+// If `with_space_conversion` is true, this function returns 2 functions that
+// convert from sRGB to linear RGB and vice versa. If `with_space_conversion` is
+// false, the 2 functions returned do nothing.
+fn converter_funcs(with_space_conversion: bool) -> ((fn(u8) -> f32), (fn(f32) -> u8)) {
+    if with_space_conversion {
+        (
+            |v| SRGB_TO_LINEAR_LUT[v as usize] * 255.0,
+            |v| (LINEAR_TO_SRGB_LUT[v as usize] * 255.0) as u8,
+        )
+    } else {
+        (|v| v as f32, |v| v as u8)
+    }
+}
+
+// If `with_alpha_premultiplication` is true, this function returns a function
+// that premultiply the alpha channel with the given channel value and another
+// function that reverses that process. If `with_alpha_premultiplication` is
+// false, the functions just return the channel value.
+fn alpha_multiplier_funcs(
+    with_alpha_premultiplication: bool,
+) -> ((fn(f32, u8) -> u8), (fn(u8, u8) -> f32)) {
+    if with_alpha_premultiplication {
+        (
+            |v, a| (v * (a as f32) / 255.0) as u8,
+            |v, a| (v as f32) * 255.0 / (a as f32).clamp(0.0, 255.0),
+        )
+    } else {
+        (|v, _a| v as u8, |v, _a| v as f32)
+    }
+}
+
+#[wasm_bindgen]
+#[no_mangle]
+pub fn resize(
+    mut input_image: Vec<u8>,
+    input_width: usize,
+    input_height: usize,
+    output_width: usize,
+    output_height: usize,
+    typ_idx: usize,
+    premultiply: bool,
+    color_space_conversion: bool,
+) -> Vec<u8> {
+    let typ = match typ_idx {
+        0 => Type::Triangle,
+        1 => Type::Catrom,
+        2 => Type::Mitchell,
+        3 => Type::Lanczos3,
+        _ => panic!("Nope"),
+    };
+    let num_input_pixels = input_width * input_height;
+    let num_output_pixels = output_width * output_height;
+
+    let (to_linear, to_color_space) = converter_funcs(color_space_conversion);
+    let (premultiplier, demultiplier) = alpha_multiplier_funcs(premultiply);
+
+    // If both options are false, there is no preprocessing on the pixel valus
+    // and we can skip the loop.
+    if premultiply || color_space_conversion {
+        for i in 0..num_input_pixels {
+            for j in 0..3 {
+                input_image[4 * i + j] =
+                    premultiplier(to_linear(input_image[4 * i + j]), input_image[4 * i + 3]);
+            }
+        }
+    }
+
+    let mut resizer = resize::new(
+        input_width,
+        input_height,
+        output_width,
+        output_height,
+        RGBA,
+        typ,
+    );
+    let mut output_image = Vec::<u8>::with_capacity(num_output_pixels * 4);
+    output_image.resize(num_output_pixels * 4, 0);
+    resizer.resize(input_image.as_slice(), output_image.as_mut_slice());
+
+    if premultiply || color_space_conversion {
+        for i in 0..num_output_pixels {
+            for j in 0..3 {
+                // We don’t need to worry about division by zero, as division by zero
+                // is well-defined on floats to return ±Inf. ±Inf is converted to 0
+                // when casting to integers.
+                output_image[4 * i + j] = to_color_space(demultiplier(
+                    output_image[4 * i + j],
+                    output_image[4 * i + 3],
+                ));
+            }
+        }
+    }
+
+    return output_image;
+}

codecs/resize/src/srgb.rs

@@ -0,0 +1,29 @@
+pub trait Clamp: std::cmp::PartialOrd + Sized {
+    fn clamp(self, min: Self, max: Self) -> Self {
+        if self.lt(&min) {
+            min
+        } else if self.gt(&max) {
+            max
+        } else {
+            self
+        }
+    }
+}
+
+impl Clamp for f32 {}
+
+pub fn srgb_to_linear(v: f32) -> f32 {
+    if v < 0.04045 {
+        v / 12.92
+    } else {
+        ((v + 0.055) / 1.055).powf(2.4).clamp(0.0, 1.0)
+    }
+}
+
+pub fn linear_to_srgb(v: f32) -> f32 {
+    if v < 0.0031308 {
+        v * 12.92
+    } else {
+        (1.055 * v.powf(1.0 / 2.4) - 0.055).clamp(0.0, 1.0)
+    }
+}

codecs/resize/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/rotate/.gitignore

@@ -0,0 +1,2 @@
+target
+Cargo.lock

codecs/rotate/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "rotate"
+version = "0.1.0"
+authors = ["Surma <surma@google.com>"]
+edition = "2018"
+
+[lib]
+name = "rotate"
+path = "rotate.rs"
+crate-type = ["cdylib", "rlib"]
+
+[profile.release]
+lto = true
+opt-level = "s"

codecs/rotate/Dockerfile

@@ -0,0 +1,8 @@
+FROM rust
+RUN rustup target add wasm32-unknown-unknown
+
+RUN mkdir /opt/wabt && \
+ curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+
+ENV PATH="/opt/wabt:${PATH}"
+WORKDIR /src

codecs/rotate/benchmark.js

@@ -0,0 +1,45 @@
+// THIS IS NOT A NODE SCRIPT
+// This is a d8 script. Please install jsvu[1] and install v8.
+// Then run `npm run --silent benchmark`.
+// [1]: https://github.com/GoogleChromeLabs/jsvu
+async function init() {
+  //  Adjustable constants.
+  const imageDimensions = 4096;
+  const iterations = new Array(100);
+
+  // Constants. Don’t change.
+  const imageByteSize = imageDimensions * imageDimensions * 4;
+  const wasmPageSize = 64 * 1024;
+
+  const buffer = readbuffer("rotate.wasm");
+  const { instance } = await WebAssembly.instantiate(buffer);
+
+  const pagesAvailable = Math.floor(
+    instance.exports.memory.buffer.byteLength / wasmPageSize
+  );
+  const pagesNeeded = Math.floor((imageByteSize * 2 + 4) / wasmPageSize) + 1;
+  const additionalPagesNeeded = pagesNeeded - pagesAvailable;
+  if (additionalPagesNeeded > 0) {
+    instance.exports.memory.grow(additionalPagesNeeded);
+  }
+
+  [0, 90, 180, 270].forEach(rotation => {
+    print(`\n${rotation} degrees`);
+    print(`==============================`);
+    for (let i = 0; i < 100; i++) {
+      const start = Date.now();
+      instance.exports.rotate(imageDimensions, imageDimensions, rotation);
+      iterations[i] = Date.now() - start;
+    }
+    const average = iterations.reduce((sum, c) => sum + c) / iterations.length;
+    const stddev = Math.sqrt(
+      iterations
+        .map(i => Math.pow(i - average, 2))
+        .reduce((sum, c) => sum + c) / iterations.length
+    );
+    print(`n = ${iterations.length}`);
+    print(`Average: ${average}`);
+    print(`StdDev: ${stddev}`);
+  });
+}
+init().catch(e => console.error(e.stack));

codecs/rotate/build.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -e
+
+echo "============================================="
+echo "Compiling wasm"
+echo "============================================="
+(
+  cargo build \
+    --target wasm32-unknown-unknown \
+    --release
+  cp target/wasm32-unknown-unknown/release/rotate.wasm .
+  wasm-strip rotate.wasm
+)
+echo "============================================="
+echo "Compiling wasm  done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull ubuntu\`"
+echo "Run \`docker pull rust\`"
+echo "Run \`docker build -t squoosh-rotate .\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/rotate/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "rotate",
+  "scripts": {
+    "build:image": "docker build -t squoosh-rotate .",
+    "build": "docker run --rm -v $(pwd):/src squoosh-rotate ./build.sh",
+    "benchmark": "echo File size after gzip && npm run benchmark:filesize && echo Optimizing && npm run -s benchmark:optimizing",
+    "benchmark:baseline": "v8 --liftoff --no-wasm-tier-up --no-opt ./benchmark.js",
+    "benchmark:optimizing": "v8 --no-liftoff --no-wasm-tier-up ./benchmark.js",
+    "benchmark:filesize": "cat rotate.wasm | gzip -c9n | wc -c"
+  }
+}

codecs/rotate/rotate.rs

@@ -0,0 +1,113 @@
+use std::slice::{from_raw_parts, from_raw_parts_mut};
+
+// This function is taken from Zachary Dremann
+// https://github.com/GoogleChromeLabs/squoosh/pull/462
+trait HardUnwrap<T> {
+    fn unwrap_hard(self) -> T;
+}
+
+impl<T> HardUnwrap<T> for Option<T> {
+    #[cfg(not(debug_assertions))]
+    #[inline]
+    fn unwrap_hard(self) -> T {
+        match self {
+            Some(t) => t,
+            None => std::process::abort(),
+        }
+    }
+
+    #[cfg(debug_assertions)]
+    fn unwrap_hard(self) -> T {
+        self.unwrap()
+    }
+}
+
+const TILE_SIZE: usize = 16;
+
+fn get_buffers<'a>(width: usize, height: usize) -> (&'a [u32], &'a mut [u32]) {
+    let num_pixels = width * height;
+    let in_b: &[u32];
+    let out_b: &mut [u32];
+    unsafe {
+        in_b = from_raw_parts::<u32>(8 as *const u32, num_pixels);
+        out_b = from_raw_parts_mut::<u32>((num_pixels * 4 + 8) as *mut u32, num_pixels);
+    }
+    return (in_b, out_b);
+}
+
+#[inline(never)]
+fn rotate_0(width: usize, height: usize) {
+    let (in_b, out_b) = get_buffers(width, height);
+    for (in_p, out_p) in in_b.iter().zip(out_b.iter_mut()) {
+        *out_p = *in_p;
+    }
+}
+
+#[inline(never)]
+fn rotate_90(width: usize, height: usize) {
+    let (in_b, out_b) = get_buffers(width, height);
+    let new_width = height;
+    let _new_height = width;
+    for y_start in (0..height).step_by(TILE_SIZE) {
+        for x_start in (0..width).step_by(TILE_SIZE) {
+            for y in y_start..(y_start + TILE_SIZE).min(height) {
+                let in_offset = y * width;
+                let in_bounds = if x_start + TILE_SIZE < width {
+                    (in_offset + x_start)..(in_offset + x_start + TILE_SIZE)
+                } else {
+                    (in_offset + x_start)..(in_offset + width)
+                };
+                let in_chunk = in_b.get(in_bounds).unwrap_hard();
+                for (x, in_p) in in_chunk.iter().enumerate() {
+                    let new_x = (new_width - 1) - y;
+                    let new_y = x + x_start;
+                    *out_b.get_mut(new_y * new_width + new_x).unwrap_hard() = *in_p;
+                }
+            }
+        }
+    }
+}
+
+#[inline(never)]
+fn rotate_180(width: usize, height: usize) {
+    let (in_b, out_b) = get_buffers(width, height);
+    for (in_p, out_p) in in_b.iter().zip(out_b.iter_mut().rev()) {
+        *out_p = *in_p;
+    }
+}
+
+#[inline(never)]
+fn rotate_270(width: usize, height: usize) {
+    let (in_b, out_b) = get_buffers(width, height);
+    let new_width = height;
+    let new_height = width;
+    for y_start in (0..height).step_by(TILE_SIZE) {
+        for x_start in (0..width).step_by(TILE_SIZE) {
+            for y in y_start..(y_start + TILE_SIZE).min(height) {
+                let in_offset = y * width;
+                let in_bounds = if x_start + TILE_SIZE < width {
+                    (in_offset + x_start)..(in_offset + x_start + TILE_SIZE)
+                } else {
+                    (in_offset + x_start)..(in_offset + width)
+                };
+                let in_chunk = in_b.get(in_bounds).unwrap_hard();
+                for (x, in_p) in in_chunk.iter().enumerate() {
+                    let new_x = y;
+                    let new_y = new_height - 1 - (x_start + x);
+                    *out_b.get_mut(new_y * new_width + new_x).unwrap_hard() = *in_p;
+                }
+            }
+        }
+    }
+}
+
+#[no_mangle]
+fn rotate(width: usize, height: usize, rotate: usize) {
+    match rotate {
+        0 => rotate_0(width, height),
+        90 => rotate_90(width, height),
+        180 => rotate_180(width, height),
+        270 => rotate_270(width, height),
+        _ => std::process::abort(),
+    }
+}

codecs/webp/build.sh

@@ -0,0 +1,71 @@
+#!/bin/bash
+
+set -e
+
+export EM_CACHE="${PWD}/node_modules/.em_cache"
+export OPTIMIZE="-Os -flto --llvm-lto 1"
+export LDFLAGS="${OPTIMIZE}"
+export CFLAGS="${OPTIMIZE}"
+export CPPFLAGS="${OPTIMIZE}"
+apt-get update
+apt-get install -qqy autoconf libtool pkg-config
+
+echo "============================================="
+echo "Compiling libwebp"
+echo "============================================="
+test -n "$SKIP_LIBWEBP" || (
+  cd node_modules/libwebp
+  autoreconf -iv
+  emconfigure ./configure -C \
+    --disable-libwebpdemux \
+    --disable-wic \
+    --disable-gif \
+    --disable-tiff \
+    --disable-jpeg \
+    --disable-png \
+    --disable-sdl \
+    --disable-gl \
+    --disable-threading \
+    --disable-neon-rtcd \
+    --disable-neon \
+    --disable-sse2 \
+    --disable-sse4.1
+  emmake make -j`nproc`
+)
+echo "============================================="
+echo "Compiling wasm bindings"
+echo "============================================="
+(
+  emcc \
+    ${OPTIMIZE} \
+    --closure 1 \
+    --bind \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="webp_dec"' \
+    -I node_modules/libwebp \
+    -o dec/webp_dec.js \
+    dec/webp_dec.cpp \
+    node_modules/libwebp/src/.libs/libwebp.a
+)
+(
+  emcc \
+    ${OPTIMIZE} \
+    --closure 1 \
+    --bind \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="webp_enc"' \
+    -I node_modules/libwebp \
+    -o enc/webp_enc.js \
+    enc/webp_enc.cpp \
+    node_modules/libwebp/src/.libs/libwebp.a
+)
+echo "============================================="
+echo "Compiling wasm bindings done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"

codecs/webp/dec/README.md

@@ -0,0 +1,22 @@
+# WebP decoder
+
+- Source: <https://github.com/webmproject/libwebp>
+- Version: v1.0.2
+
+## Example
+
+See `example.html`
+
+## API
+
+### `int version()`
+
+Returns the version of libwebp as a number. va.b.c is encoded as 0x0a0b0c
+
+### `RawImage decode(std::string buffer)`
+
+Decodes the given webp buffer into raw RGBA. `RawImage` is a class with 3 fields: `buffer`, `width`, and `height`.
+
+### `void free_result()`
+
+Frees the result created by `decode()`.

codecs/webp/dec/example.html

@@ -0,0 +1,24 @@
+<!doctype html>
+<script src='webp_dec.js'></script>
+<script>
+  const Module = webp_dec();
+
+  async function loadFile(src) {
+    const resp = await fetch(src);
+    return await resp.arrayBuffer();
+  }
+
+  Module.onRuntimeInitialized = async _ => {
+    console.log('Version:', Module.version().toString(16));
+    const image = await loadFile('../../example.webp');
+    const result = Module.decode(image);
+    const imageData = new ImageData(new Uint8ClampedArray(result.buffer), result.width, result.height);
+    Module.free_result();
+    const canvas = document.createElement('canvas');
+    canvas.width = result.width;
+    canvas.height = result.height;
+    document.body.appendChild(canvas);
+    const ctx = canvas.getContext('2d');
+    ctx.putImageData(imageData, 0, 0);
+  };
+</script>

codecs/webp/dec/webp_dec.cpp

@@ -0,0 +1,42 @@
+#include <string>
+#include "emscripten/bind.h"
+#include "emscripten/val.h"
+#include "src/webp/decode.h"
+#include "src/webp/demux.h"
+
+using namespace emscripten;
+
+int version() {
+  return WebPGetDecoderVersion();
+}
+
+class RawImage {
+ public:
+  val buffer;
+  int width;
+  int height;
+
+  RawImage(val b, int w, int h) : buffer(b), width(w), height(h) {}
+};
+
+uint8_t* last_result;
+RawImage decode(std::string buffer) {
+  int width, height;
+  last_result = WebPDecodeRGBA((const uint8_t*)buffer.c_str(), buffer.size(), &width, &height);
+  return RawImage(val(typed_memory_view(width * height * 4, last_result)), width, height);
+}
+
+void free_result() {
+  free(last_result);
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  class_<RawImage>("RawImage")
+      .property("buffer", &RawImage::buffer)
+      .property("width", &RawImage::width)
+      .property("height", &RawImage::height);
+
+  function("decode", &decode);
+  function("version", &version);
+  function("free_result", &free_result);
+}

codecs/webp/dec/webp_dec.d.ts

@@ -0,0 +1,13 @@
+interface RawImage {
+  buffer: Uint8Array;
+  width: number;
+  height: number;
+}
+
+interface WebPModule extends EmscriptenWasm.Module {
+  decode(data: BufferSource): RawImage;
+  free_result(): void;
+}
+
+export default function(opts: EmscriptenWasm.ModuleOpts): WebPModule;
+

codecs/webp/dec/webp_dec.js

@@ -0,0 +1,79 @@
+
+var webp_dec = (function() {
+  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
+  if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
+  return (
+function(webp_dec) {
+  webp_dec = webp_dec || {};
+
+var e;e||(e=typeof webp_dec !== 'undefined' ? webp_dec : {});var r={},w;for(w in e)e.hasOwnProperty(w)&&(r[w]=e[w]);var aa=!1,z=!1,ba=!1,ca=!1;aa="object"===typeof window;z="function"===typeof importScripts;ba="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;ca=!aa&&!ba&&!z;var A="",da,B,ea,ha;
+if(ba)A=z?require("path").dirname(A)+"/":__dirname+"/",da=function(a,b){ea||(ea=require("fs"));ha||(ha=require("path"));a=ha.normalize(a);return ea.readFileSync(a,b?null:"utf8")},B=function(a){a=da(a,!0);a.buffer||(a=new Uint8Array(a));a.buffer||D("Assertion failed: undefined");return a},1<process.argv.length&&process.argv[1].replace(/\\/g,"/"),process.argv.slice(2),process.on("uncaughtException",function(a){throw a;}),process.on("unhandledRejection",D),e.inspect=function(){return"[Emscripten Module object]"};
+else if(ca)"undefined"!=typeof read&&(da=function(a){return read(a)}),B=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");"object"===typeof a||D("Assertion failed: undefined");return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(aa||z)z?A=self.location.href:document.currentScript&&(A=document.currentScript.src),_scriptDir&&
+(A=_scriptDir),0!==A.indexOf("blob:")?A=A.substr(0,A.lastIndexOf("/")+1):A="",da=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.send(null);return b.responseText},z&&(B=function(a){var b=new XMLHttpRequest;b.open("GET",a,!1);b.responseType="arraybuffer";b.send(null);return new Uint8Array(b.response)});var ia=e.print||console.log.bind(console),E=e.printErr||console.warn.bind(console);for(w in r)r.hasOwnProperty(w)&&(e[w]=r[w]);r=null;var F;e.wasmBinary&&(F=e.wasmBinary);var noExitRuntime;
+e.noExitRuntime&&(noExitRuntime=e.noExitRuntime);"object"!==typeof WebAssembly&&E("no native wasm support detected");var G,ja=new WebAssembly.Table({initial:138,maximum:138,element:"anyfunc"}),ka=!1,la="undefined"!==typeof TextDecoder?new TextDecoder("utf8"):void 0;
+function ma(a,b,c){var d=H;if(0<c){c=b+c-1;for(var f=0;f<a.length;++f){var g=a.charCodeAt(f);if(55296<=g&&57343>=g){var q=a.charCodeAt(++f);g=65536+((g&1023)<<10)|q&1023}if(127>=g){if(b>=c)break;d[b++]=g}else{if(2047>=g){if(b+1>=c)break;d[b++]=192|g>>6}else{if(65535>=g){if(b+2>=c)break;d[b++]=224|g>>12}else{if(b+3>=c)break;d[b++]=240|g>>18;d[b++]=128|g>>12&63}d[b++]=128|g>>6&63}d[b++]=128|g&63}}d[b]=0}}var na="undefined"!==typeof TextDecoder?new TextDecoder("utf-16le"):void 0;
+function oa(a){var b;for(b=a>>1;I[b];)++b;b<<=1;if(32<b-a&&na)return na.decode(H.subarray(a,b));b=0;for(var c="";;){var d=I[a+2*b>>1];if(0==d)return c;++b;c+=String.fromCharCode(d)}}function pa(a,b,c){void 0===c&&(c=2147483647);if(2>c)return 0;c-=2;var d=b;c=c<2*a.length?c/2:a.length;for(var f=0;f<c;++f)I[b>>1]=a.charCodeAt(f),b+=2;I[b>>1]=0;return b-d}function qa(a){return 2*a.length}
+function ra(a){for(var b=0,c="";;){var d=J[a+4*b>>2];if(0==d)return c;++b;65536<=d?(d-=65536,c+=String.fromCharCode(55296|d>>10,56320|d&1023)):c+=String.fromCharCode(d)}}function sa(a,b,c){void 0===c&&(c=2147483647);if(4>c)return 0;var d=b;c=d+c-4;for(var f=0;f<a.length;++f){var g=a.charCodeAt(f);if(55296<=g&&57343>=g){var q=a.charCodeAt(++f);g=65536+((g&1023)<<10)|q&1023}J[b>>2]=g;b+=4;if(b+4>c)break}J[b>>2]=0;return b-d}
+function ta(a){for(var b=0,c=0;c<a.length;++c){var d=a.charCodeAt(c);55296<=d&&57343>=d&&++c;b+=4}return b}var K,ua,H,I,va,J,L,wa,xa;function ya(a){K=a;e.HEAP8=ua=new Int8Array(a);e.HEAP16=I=new Int16Array(a);e.HEAP32=J=new Int32Array(a);e.HEAPU8=H=new Uint8Array(a);e.HEAPU16=va=new Uint16Array(a);e.HEAPU32=L=new Uint32Array(a);e.HEAPF32=wa=new Float32Array(a);e.HEAPF64=xa=new Float64Array(a)}var za=e.INITIAL_MEMORY||16777216;e.wasmMemory?G=e.wasmMemory:G=new WebAssembly.Memory({initial:za/65536});
+G&&(K=G.buffer);za=K.byteLength;ya(K);J[3336]=5256384;function Aa(a){for(;0<a.length;){var b=a.shift();if("function"==typeof b)b();else{var c=b.ka;"number"===typeof c?void 0===b.ba?e.dynCall_v(c):e.dynCall_vi(c,b.ba):c(void 0===b.ba?null:b.ba)}}}var Ba=[],Ca=[],Da=[],Ea=[];function Fa(){var a=e.preRun.shift();Ba.unshift(a)}var M=0,Ga=null,N=null;e.preloadedImages={};e.preloadedAudios={};
+function D(a){if(e.onAbort)e.onAbort(a);ia(a);E(a);ka=!0;throw new WebAssembly.RuntimeError("abort("+a+"). Build with -s ASSERTIONS=1 for more info.");}function Ha(){var a=O;return String.prototype.startsWith?a.startsWith("data:application/octet-stream;base64,"):0===a.indexOf("data:application/octet-stream;base64,")}var O="webp_dec.wasm";if(!Ha()){var Ia=O;O=e.locateFile?e.locateFile(Ia,A):A+Ia}
+function Ja(){try{if(F)return new Uint8Array(F);if(B)return B(O);throw"both async and sync fetching of the wasm failed";}catch(a){D(a)}}function Ka(){return F||!aa&&!z||"function"!==typeof fetch?new Promise(function(a){a(Ja())}):fetch(O,{credentials:"same-origin"}).then(function(a){if(!a.ok)throw"failed to load wasm binary file at '"+O+"'";return a.arrayBuffer()}).catch(function(){return Ja()})}Ca.push({ka:function(){La()}});function Ma(){return 0<Ma.X}
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+e.dynCall_ii=function(){return(e.dynCall_ii=e.asm.x).apply(null,arguments)};e.dynCall_vi=function(){return(e.dynCall_vi=e.asm.y).apply(null,arguments)};e.dynCall_iii=function(){return(e.dynCall_iii=e.asm.z).apply(null,arguments)};e.dynCall_viii=function(){return(e.dynCall_viii=e.asm.A).apply(null,arguments)};e.dynCall_vii=function(){return(e.dynCall_vii=e.asm.B).apply(null,arguments)};e.dynCall_i=function(){return(e.dynCall_i=e.asm.C).apply(null,arguments)};
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+function Ob(){function a(){if(!Mb&&(Mb=!0,e.calledRun=!0,!ka)){Aa(Ca);Aa(Da);if(e.onRuntimeInitialized)e.onRuntimeInitialized();if(e.postRun)for("function"==typeof e.postRun&&(e.postRun=[e.postRun]);e.postRun.length;){var b=e.postRun.shift();Ea.unshift(b)}Aa(Ea)}}if(!(0<M)){if(e.preRun)for("function"==typeof e.preRun&&(e.preRun=[e.preRun]);e.preRun.length;)Fa();Aa(Ba);0<M||(e.setStatus?(e.setStatus("Running..."),setTimeout(function(){setTimeout(function(){e.setStatus("")},1);a()},1)):a())}}
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+
+
+  return webp_dec
+}
+);
+})();
+if (typeof exports === 'object' && typeof module === 'object')
+      module.exports = webp_dec;
+    else if (typeof define === 'function' && define['amd'])
+      define([], function() { return webp_dec; });
+    else if (typeof exports === 'object')
+      exports["webp_dec"] = webp_dec;
+    

codecs/webp/enc/README.md

@@ -0,0 +1,26 @@
+# WebP encoder
+
+- Source: <https://github.com/webmproject/libwebp>
+- Version: v1.0.2
+
+## Dependencies
+
+- Docker
+
+## Example
+
+See `example.html`
+
+## API
+
+### `int version()`
+
+Returns the version of libwebp as a number. va.b.c is encoded as 0x0a0b0c
+
+### `UInt8Array encode(uint8_t* image_buffer, int image_width, int image_height, WebPConfig config)`
+
+Encodes the given image with given dimension to WebP.
+
+### `void free_result()`
+
+Frees the last result created by `encode()`.

codecs/webp/enc/example.html

@@ -0,0 +1,62 @@
+<!doctype html>
+<script src='webp_enc.js'></script>
+<script>
+  const module = webp_enc();
+
+  async function loadImage(src) {
+    // Load image
+    const img = document.createElement('img');
+    img.src = src;
+    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];
+    // Draw image onto canvas
+    const ctx = canvas.getContext('2d');
+    ctx.drawImage(img, 0, 0);
+    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 result = module.encode(image.data, image.width, image.height, {
+      quality: 75,
+      target_size: 0,
+      target_PSNR: 0,
+      method: 4,
+      sns_strength: 50,
+      filter_strength: 60,
+      filter_sharpness: 0,
+      filter_type: 1,
+      partitions: 0,
+      segments: 4,
+      pass: 1,
+      show_compressed: 0,
+      preprocessing: 0,
+      autofilter: 0,
+      partition_limit: 0,
+      alpha_compression: 1,
+      alpha_filtering: 1,
+      alpha_quality: 100,
+      lossless: 0,
+      exact: 0,
+      image_hint: 0,
+      emulate_jpeg_size: 0,
+      thread_level: 0,
+      low_memory: 0,
+      near_lossless: 100,
+      use_delta_palette: 0,
+      use_sharp_yuv: 0,
+    });
+    console.log('size', result.length);
+    const blob = new Blob([result], {type: 'image/webp'});
+
+    module.free_result();
+
+    const blobURL = URL.createObjectURL(blob);
+    const img = document.createElement('img');
+    img.src = blobURL;
+    document.body.appendChild(img);
+  };
+</script>

codecs/webp/enc/webp_enc.cpp

@@ -0,0 +1,93 @@
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdexcept>
+#include "src/webp/encode.h"
+
+using namespace emscripten;
+
+int version() {
+  return WebPGetEncoderVersion();
+}
+
+uint8_t* last_result;
+
+val encode(std::string img, int width, int height, WebPConfig config) {
+  uint8_t* img_in = (uint8_t*)img.c_str();
+
+  // A lot of this is duplicated from Encode in picture_enc.c
+  WebPPicture pic;
+  WebPMemoryWriter wrt;
+  int ok;
+
+  if (!WebPPictureInit(&pic)) {
+    // shouldn't happen, except if system installation is broken
+    throw std::runtime_error("Unexpected error");
+  }
+
+  // Only use use_argb if we really need it, as it's slower.
+  pic.use_argb = config.lossless || config.use_sharp_yuv || config.preprocessing > 0;
+  pic.width = width;
+  pic.height = height;
+  pic.writer = WebPMemoryWrite;
+  pic.custom_ptr = &wrt;
+
+  WebPMemoryWriterInit(&wrt);
+
+  ok = WebPPictureImportRGBA(&pic, (uint8_t*)img_in, width * 4) && WebPEncode(&config, &pic);
+  WebPPictureFree(&pic);
+  if (!ok) {
+    WebPMemoryWriterClear(&wrt);
+    throw std::runtime_error("Encode failed");
+  }
+
+  last_result = wrt.mem;
+
+  return val(typed_memory_view(wrt.size, wrt.mem));
+}
+
+void free_result() {
+  WebPFree(last_result);
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  enum_<WebPImageHint>("WebPImageHint")
+      .value("WEBP_HINT_DEFAULT", WebPImageHint::WEBP_HINT_DEFAULT)
+      .value("WEBP_HINT_PICTURE", WebPImageHint::WEBP_HINT_PICTURE)
+      .value("WEBP_HINT_PHOTO", WebPImageHint::WEBP_HINT_PHOTO)
+      .value("WEBP_HINT_GRAPH", WebPImageHint::WEBP_HINT_GRAPH);
+
+  value_object<WebPConfig>("WebPConfig")
+      .field("lossless", &WebPConfig::lossless)
+      .field("quality", &WebPConfig::quality)
+      .field("method", &WebPConfig::method)
+      .field("image_hint", &WebPConfig::image_hint)
+      .field("target_size", &WebPConfig::target_size)
+      .field("target_PSNR", &WebPConfig::target_PSNR)
+      .field("segments", &WebPConfig::segments)
+      .field("sns_strength", &WebPConfig::sns_strength)
+      .field("filter_strength", &WebPConfig::filter_strength)
+      .field("filter_sharpness", &WebPConfig::filter_sharpness)
+      .field("filter_type", &WebPConfig::filter_type)
+      .field("autofilter", &WebPConfig::autofilter)
+      .field("alpha_compression", &WebPConfig::alpha_compression)
+      .field("alpha_filtering", &WebPConfig::alpha_filtering)
+      .field("alpha_quality", &WebPConfig::alpha_quality)
+      .field("pass", &WebPConfig::pass)
+      .field("show_compressed", &WebPConfig::show_compressed)
+      .field("preprocessing", &WebPConfig::preprocessing)
+      .field("partitions", &WebPConfig::partitions)
+      .field("partition_limit", &WebPConfig::partition_limit)
+      .field("emulate_jpeg_size", &WebPConfig::emulate_jpeg_size)
+      .field("thread_level", &WebPConfig::thread_level)
+      .field("low_memory", &WebPConfig::low_memory)
+      .field("near_lossless", &WebPConfig::near_lossless)
+      .field("exact", &WebPConfig::exact)
+      .field("use_delta_palette", &WebPConfig::use_delta_palette)
+      .field("use_sharp_yuv", &WebPConfig::use_sharp_yuv);
+
+  function("version", &version);
+  function("encode", &encode);
+  function("free_result", &free_result);
+}

codecs/webp/enc/webp_enc.d.ts

@@ -0,0 +1,9 @@
+import { EncodeOptions } from '../../src/codecs/webp/encoder-meta';
+
+interface WebPModule extends EmscriptenWasm.Module {
+  encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array;
+  free_result(): void;
+}
+
+
+export default function(opts: EmscriptenWasm.ModuleOpts): WebPModule;

codecs/webp/enc/webp_enc.js

@@ -0,0 +1,70 @@
+
+var webp_enc = (function() {
+  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
+  if (typeof __filename !== 'undefined') _scriptDir = _scriptDir || __filename;
+  return (
+function(webp_enc) {
+  webp_enc = webp_enc || {};
+
+var d;d||(d=typeof webp_enc !== 'undefined' ? webp_enc : {});var u={},w;for(w in d)d.hasOwnProperty(w)&&(u[w]=d[w]);var x=!1,y=!1,aa=!1,ba=!1;x="object"===typeof window;y="function"===typeof importScripts;aa="object"===typeof process&&"object"===typeof process.versions&&"string"===typeof process.versions.node;ba=!x&&!aa&&!y;var z="",B,C,ca,da;
+if(aa)z=y?require("path").dirname(z)+"/":__dirname+"/",B=function(a,b){ca||(ca=require("fs"));da||(da=require("path"));a=da.normalize(a);return ca.readFileSync(a,b?null:"utf8")},C=function(a){a=B(a,!0);a.buffer||(a=new Uint8Array(a));a.buffer||D("Assertion failed: undefined");return a},1<process.argv.length&&process.argv[1].replace(/\\/g,"/"),process.argv.slice(2),process.on("uncaughtException",function(a){throw a;}),process.on("unhandledRejection",D),d.inspect=function(){return"[Emscripten Module object]"};
+else if(ba)"undefined"!=typeof read&&(B=function(a){return read(a)}),C=function(a){if("function"===typeof readbuffer)return new Uint8Array(readbuffer(a));a=read(a,"binary");"object"===typeof a||D("Assertion failed: undefined");return a},"undefined"!==typeof print&&("undefined"===typeof console&&(console={}),console.log=print,console.warn=console.error="undefined"!==typeof printErr?printErr:print);else if(x||y)y?z=self.location.href:document.currentScript&&(z=document.currentScript.src),_scriptDir&&
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+function ja(a,b,c){var e=I;if(0<c){c=b+c-1;for(var f=0;f<a.length;++f){var g=a.charCodeAt(f);if(55296<=g&&57343>=g){var n=a.charCodeAt(++f);g=65536+((g&1023)<<10)|n&1023}if(127>=g){if(b>=c)break;e[b++]=g}else{if(2047>=g){if(b+1>=c)break;e[b++]=192|g>>6}else{if(65535>=g){if(b+2>=c)break;e[b++]=224|g>>12}else{if(b+3>=c)break;e[b++]=240|g>>18;e[b++]=128|g>>12&63}e[b++]=128|g>>6&63}e[b++]=128|g&63}}e[b]=0}}var ka="undefined"!==typeof TextDecoder?new TextDecoder("utf-16le"):void 0;
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+(p-2)+") {\nthrowBindingError('function "+l+" called with ' + arguments.length + ' arguments, expected "+(p-2)+" args!');\n}\n";v&&(l+="var destructors = [];\n");var W=v?"destructors":"null";A="throwBindingError invoker fn runDestructors retType classParam".split(" ");m=[U,m,g,La,k[0],k[1]];r&&(l+="var thisWired = classParam.toWireType("+W+", this);\n");for(q=0;q<p-2;++q)l+="var arg"+q+"Wired = argType"+q+".toWireType("+W+", arg"+q+"); // "+k[q+2].name+"\n",A.push("argType"+q),m.push(k[q+2]);r&&(H=
+"thisWired"+(0<H.length?", ":"")+H);l+=(t?"var rv = ":"")+"invoker(fn"+(0<H.length?", ":"")+H+");\n";if(v)l+="runDestructors(destructors);\n";else for(q=r?1:2;q<k.length;++q)p=1===q?"thisWired":"arg"+(q-2)+"Wired",null!==k[q].O&&(l+=p+"_dtor("+p+"); // "+k[q].name+"\n",A.push(p+"_dtor"),m.push(k[q].O));t&&(l+="var ret = retType.fromWireType(rv);\nreturn ret;\n");A.push(l+"}\n");k=gb(A).apply(null,m);q=b-1;if(!d.hasOwnProperty(h))throw new Ra("Replacing nonexistant public symbol");void 0!==d[h].P&&
+void 0!==q?d[h].P[q]=k:(d[h]=k,d[h].V=q);return[]})},b:function(a,b,c,e,f){function g(l){return l}b=T(b);-1===f&&(f=4294967295);var n=Ta(c);if(0===e){var h=32-8*c;g=function(l){return l<<h>>>h}}var k=-1!=b.indexOf("unsigned");S(a,{name:b,fromWireType:g,toWireType:function(l,m){if("number"!==typeof m&&"boolean"!==typeof m)throw new TypeError('Cannot convert "'+eb(m)+'" to '+this.name);if(m<e||m>f)throw new TypeError('Passing a number "'+eb(m)+'" from JS side to C/C++ side to an argument of type "'+
+b+'", which is outside the valid range ['+e+", "+f+"]!");return k?m>>>0:m|0},argPackAdvance:8,readValueFromPointer:kb(b,n,0!==e),O:null})},a:function(a,b,c){function e(g){g>>=2;var n=M;return new f(L,n[g+1],n[g])}var f=[Int8Array,Uint8Array,Int16Array,Uint16Array,Int32Array,Uint32Array,Float32Array,Float64Array][b];c=T(c);S(a,{name:c,fromWireType:e,argPackAdvance:8,readValueFromPointer:e},{aa:!0})},h:function(a,b){b=T(b);var c="std::string"===b;S(a,{name:b,fromWireType:function(e){var f=M[e>>2];if(c){var g=
+I[e+4+f],n=0;0!=g&&(n=g,I[e+4+f]=0);var h=e+4;for(g=0;g<=f;++g){var k=e+4+g;if(0==I[k]){if(h){for(var l=I,m=h+NaN,p=h;l[p]&&!(p>=m);)++p;if(16<p-h&&l.subarray&&ia)h=ia.decode(l.subarray(h,p));else{for(m="";h<p;){var r=l[h++];if(r&128){var v=l[h++]&63;if(192==(r&224))m+=String.fromCharCode((r&31)<<6|v);else{var q=l[h++]&63;r=224==(r&240)?(r&15)<<12|v<<6|q:(r&7)<<18|v<<12|q<<6|l[h++]&63;65536>r?m+=String.fromCharCode(r):(r-=65536,m+=String.fromCharCode(55296|r>>10,56320|r&1023))}}else m+=String.fromCharCode(r)}h=
+m}}else h="";if(void 0===t)var t=h;else t+=String.fromCharCode(0),t+=h;h=k+1}}0!=n&&(I[e+4+f]=n)}else{t=Array(f);for(g=0;g<f;++g)t[g]=String.fromCharCode(I[e+4+g]);t=t.join("")}X(e);return t},toWireType:function(e,f){f instanceof ArrayBuffer&&(f=new Uint8Array(f));var g="string"===typeof f;g||f instanceof Uint8Array||f instanceof Uint8ClampedArray||f instanceof Int8Array||U("Cannot pass non-string to std::string");var n=(c&&g?function(){for(var l=0,m=0;m<f.length;++m){var p=f.charCodeAt(m);55296<=
+p&&57343>=p&&(p=65536+((p&1023)<<10)|f.charCodeAt(++m)&1023);127>=p?++l:l=2047>=p?l+2:65535>=p?l+3:l+4}return l}:function(){return f.length})(),h=nb(4+n+1);M[h>>2]=n;if(c&&g)ja(f,h+4,n+1);else if(g)for(g=0;g<n;++g){var k=f.charCodeAt(g);255<k&&(X(h),U("String has UTF-16 code units that do not fit in 8 bits"));I[h+4+g]=k}else for(g=0;g<n;++g)I[h+4+g]=f[g];null!==e&&e.push(X,h);return h},argPackAdvance:8,readValueFromPointer:Ma,O:function(e){X(e)}})},f:function(a,b,c){c=T(c);if(2===b){var e=la;var f=
+ma;var g=na;var n=function(){return sa};var h=1}else 4===b&&(e=oa,f=pa,g=qa,n=function(){return M},h=2);S(a,{name:c,fromWireType:function(k){var l=M[k>>2],m=n(),p=m[k+4+l*b>>h],r=0;0!=p&&(r=p,m[k+4+l*b>>h]=0);var v=k+4;for(p=0;p<=l;++p){var q=k+4+p*b;if(0==m[q>>h]){v=e(v);if(void 0===t)var t=v;else t+=String.fromCharCode(0),t+=v;v=q+b}}0!=r&&(m[k+4+l*b>>h]=r);X(k);return t},toWireType:function(k,l){"string"!==typeof l&&U("Cannot pass non-string to C++ string type "+c);var m=g(l),p=nb(4+m+b);M[p>>
+2]=m>>h;f(l,p+4,m+b);null!==k&&k.push(X,p);return p},argPackAdvance:8,readValueFromPointer:Ma,O:function(k){X(k)}})},m:function(a,b,c,e,f,g){Ka[a]={name:T(b),ba:Y(c,e),da:Y(f,g),U:[]}},e:function(a,b,c,e,f,g,n,h,k,l){Ka[a].U.push({W:T(b),$:c,Y:Y(e,f),Z:g,fa:n,ea:Y(h,k),ga:l})},t:function(a,b){b=T(b);S(a,{ha:!0,name:b,argPackAdvance:0,fromWireType:function(){},toWireType:function(){}})},u:Xa,k:function(a){4<a&&(V[a].S+=1)},q:function(a,b){a=db(a,"_emval_take_value");a=a.readValueFromPointer(b);return Ya(a)},
+p:function(a,b,c){I.copyWithin(a,b,b+c)},c:function(a){var b=I.length;if(2147418112<a)return!1;for(var c=1;4>=c;c*=2){var e=b*(1+.2/c);e=Math.min(e,a+100663296);e=Math.max(16777216,a,e);0<e%65536&&(e+=65536-e%65536);a:{try{G.grow(Math.min(2147418112,e)-L.byteLength+65535>>16);va(G.buffer);var f=1;break a}catch(g){}f=void 0}if(f)return!0}return!1},memory:G,table:fa},pb=function(){function a(f){d.asm=f.exports;N--;d.monitorRunDependencies&&d.monitorRunDependencies(N);0==N&&(null!==Da&&(clearInterval(Da),
+Da=null),O&&(f=O,O=null,f()))}function b(f){a(f.instance)}function c(f){return Ha().then(function(g){return WebAssembly.instantiate(g,e)}).then(f,function(g){E("failed to asynchronously prepare wasm: "+g);D(g)})}var e={a:ob};N++;d.monitorRunDependencies&&d.monitorRunDependencies(N);if(d.instantiateWasm)try{return d.instantiateWasm(e,a)}catch(f){return E("Module.instantiateWasm callback failed with error: "+f),!1}(function(){if(F||"function"!==typeof WebAssembly.instantiateStreaming||Ea()||"function"!==
+typeof fetch)return c(b);fetch(P,{credentials:"same-origin"}).then(function(f){return WebAssembly.instantiateStreaming(f,e).then(b,function(g){E("wasm streaming compile failed: "+g);E("falling back to ArrayBuffer instantiation");c(b)})})})();return{}}();d.asm=pb;
+var Ia=d.___wasm_call_ctors=function(){return(Ia=d.___wasm_call_ctors=d.asm.v).apply(null,arguments)},nb=d._malloc=function(){return(nb=d._malloc=d.asm.w).apply(null,arguments)},X=d._free=function(){return(X=d._free=d.asm.x).apply(null,arguments)},cb=d.___getTypeName=function(){return(cb=d.___getTypeName=d.asm.y).apply(null,arguments)};d.___embind_register_native_and_builtin_types=function(){return(d.___embind_register_native_and_builtin_types=d.asm.z).apply(null,arguments)};
+d.dynCall_i=function(){return(d.dynCall_i=d.asm.A).apply(null,arguments)};d.dynCall_vi=function(){return(d.dynCall_vi=d.asm.B).apply(null,arguments)};d.dynCall_iii=function(){return(d.dynCall_iii=d.asm.C).apply(null,arguments)};d.dynCall_viii=function(){return(d.dynCall_viii=d.asm.D).apply(null,arguments)};d.dynCall_fii=function(){return(d.dynCall_fii=d.asm.E).apply(null,arguments)};d.dynCall_viif=function(){return(d.dynCall_viif=d.asm.F).apply(null,arguments)};
+d.dynCall_ii=function(){return(d.dynCall_ii=d.asm.G).apply(null,arguments)};d.dynCall_iiiiii=function(){return(d.dynCall_iiiiii=d.asm.H).apply(null,arguments)};d.dynCall_viiiii=function(){return(d.dynCall_viiiii=d.asm.I).apply(null,arguments)};d.dynCall_v=function(){return(d.dynCall_v=d.asm.J).apply(null,arguments)};d.dynCall_iiii=function(){return(d.dynCall_iiii=d.asm.K).apply(null,arguments)};d.dynCall_viiiiiiiii=function(){return(d.dynCall_viiiiiiiii=d.asm.L).apply(null,arguments)};
+d.dynCall_viiii=function(){return(d.dynCall_viiii=d.asm.M).apply(null,arguments)};d.dynCall_viiiiii=function(){return(d.dynCall_viiiiii=d.asm.N).apply(null,arguments)};d.asm=pb;var Z;d.then=function(a){if(Z)a(d);else{var b=d.onRuntimeInitialized;d.onRuntimeInitialized=function(){b&&b();a(d)}}return d};O=function qb(){Z||rb();Z||(O=qb)};
+function rb(){function a(){if(!Z&&(Z=!0,d.calledRun=!0,!ha)){xa(za);xa(Aa);if(d.onRuntimeInitialized)d.onRuntimeInitialized();if(d.postRun)for("function"==typeof d.postRun&&(d.postRun=[d.postRun]);d.postRun.length;){var b=d.postRun.shift();Ba.unshift(b)}xa(Ba)}}if(!(0<N)){if(d.preRun)for("function"==typeof d.preRun&&(d.preRun=[d.preRun]);d.preRun.length;)Ca();xa(ya);0<N||(d.setStatus?(d.setStatus("Running..."),setTimeout(function(){setTimeout(function(){d.setStatus("")},1);a()},1)):a())}}d.run=rb;
+if(d.preInit)for("function"==typeof d.preInit&&(d.preInit=[d.preInit]);0<d.preInit.length;)d.preInit.pop()();noExitRuntime=!0;rb();
+
+
+  return webp_enc
+}
+);
+})();
+if (typeof exports === 'object' && typeof module === 'object')
+      module.exports = webp_enc;
+    else if (typeof define === 'function' && define['amd'])
+      define([], function() { return webp_enc; });
+    else if (typeof exports === 'object')
+      exports["webp_enc"] = webp_enc;
+    

codecs/webp/package-lock.json

@@ -1,5 +1,5 @@
 {
-  "name": "webp_dec",
+  "name": "webp",
   "requires": true,
   "lockfileVersion": 1,
   "dependencies": {

codecs/webp/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "webp",
+  "scripts": {
+    "install": "napa",
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
+  },
+  "napa": {
+    "libwebp": "webmproject/libwebp#v1.0.2"
+  },
+  "devDependencies": {
+    "napa": "3.0.0"
+  }
+}

codecs/webp_dec/README.md

@@ -1,42 +0,0 @@
-# WebP decoder
-
-- Source: <https://github.com/webmproject/libwebp>
-- Version: v0.6.1
-
-## Example
-
-See `example.html`
-
-## API
-
-### `int version()`
-
-Returns the version of libwebp as a number. va.b.c is encoded as 0x0a0b0c
-
-### `uint8_t* create_buffer(int size)`
-
-Allocates an buffer for the file data.
-
-### `void destroy_buffer(uint8_t* p)`
-
-Frees a buffer created with `create_buffer`.
-
-### `void decode(uint8_t* img_in, int size)`
-
-Decodes the given webp file into raw RGBA. The result is implicitly stored and can be accessed using the `get_result_*()` functions.
-
-### `void free_result()`
-
-Frees the result created by `decode()`.
-
-### `int get_result_pointer()`
-
-Returns the pointer to the start of the buffer holding the encoded data. Length is width x height x 4 bytes.
-
-### `int get_result_width()`
-
-Returns the width of the image.
-
-### `int get_result_height()`
-
-Returns the height of the image.

codecs/webp_dec/example.html

@@ -1,45 +0,0 @@
-<!doctype html>
-<script src='webp_dec.js'></script>
-<script>
-  const Module = webp_dec();
-
-  async function loadFile(src) {
-    const resp = await fetch(src);
-    return await resp.arrayBuffer();
-  }
-
-  Module.onRuntimeInitialized = async _ => {
-    const api = {
-      version: Module.cwrap('version', 'number', []),
-      create_buffer: Module.cwrap('create_buffer', 'number', ['number', 'number']),
-      destroy_buffer: Module.cwrap('destroy_buffer', '', ['number']),
-      decode: Module.cwrap('decode', '', ['number', 'number']),
-      free_result: Module.cwrap('free_result', '', ['number']),
-      get_result_pointer: Module.cwrap('get_result_pointer', 'number', []),
-      get_result_width: Module.cwrap('get_result_width', 'number', []),
-      get_result_height: Module.cwrap('get_result_height', 'number', []),
-    };
-    console.log('Version:', api.version().toString(16));
-    const image = await loadFile('../example.webp');
-    const p = api.create_buffer(image.byteLength);
-    Module.HEAP8.set(new Uint8Array(image), p);
-    api.decode(p, image.byteLength);
-    const resultPointer = api.get_result_pointer();
-    if(resultPointer === 0) {
-      throw new Error("Could not decode image");
-    }
-    const resultWidth = api.get_result_width();
-    const resultHeight = api.get_result_height();
-    const resultView = new Uint8Array(Module.HEAP8.buffer, resultPointer, resultWidth * resultHeight * 4);
-    const result = new Uint8ClampedArray(resultView);
-    const imageData = new ImageData(result, resultWidth, resultHeight);
-    api.free_result(resultPointer);
-    api.destroy_buffer(p);
-    const canvas = document.createElement('canvas');
-    canvas.width = resultWidth;
-    canvas.height = resultHeight;
-    document.body.appendChild(canvas);
-    const ctx = canvas.getContext('2d');
-    ctx.putImageData(imageData, 0, 0);
-  };
-</script>

codecs/webp_dec/package.json

@@ -1,13 +0,0 @@
-{
-  "name": "webp_dec",
-  "scripts": {
-    "install": "napa",
-    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten emcc -O3 -s WASM=1 -s EXTRA_EXPORTED_RUNTIME_METHODS='[\"cwrap\"]' -s ALLOW_MEMORY_GROWTH=1 -s MODULARIZE=1 -s 'EXPORT_NAME=\"webp_dec\"' -I node_modules/libwebp -o ./webp_dec.js webp_dec.c node_modules/libwebp/src/{dec,dsp,demux,enc,mux,utils}/*.c"
-  },
-  "napa": {
-    "libwebp": "webmproject/libwebp#v1.0.0"
-  },
-  "devDependencies": {
-    "napa": "^3.0.0"
-  }
-}

codecs/webp_dec/webp_dec.c

@@ -1,51 +0,0 @@
-#include "emscripten.h"
-#include "src/webp/decode.h"
-#include "src/webp/demux.h"
-#include <stdlib.h>
-
-EMSCRIPTEN_KEEPALIVE
-int version() {
-  return WebPGetDecoderVersion();
-}
-
-EMSCRIPTEN_KEEPALIVE
-uint8_t* create_buffer(int size) {
-  return malloc(size);
-}
-
-EMSCRIPTEN_KEEPALIVE
-void destroy_buffer(uint8_t* p) {
-  free(p);
-}
-
-int result[3];
-EMSCRIPTEN_KEEPALIVE
-void decode(uint8_t* img_in, int size) {
-  int width, height;
-  uint8_t* img_out = WebPDecodeRGBA(img_in, size, &width, &height);
-  result[0] = (int)img_out;
-  result[1] = width;
-  result[2] = height;
-
-}
-
-EMSCRIPTEN_KEEPALIVE
-void free_result() {
-  WebPFree(result[0]);
-}
-
-EMSCRIPTEN_KEEPALIVE
-int get_result_pointer() {
-  return result[0];
-}
-
-EMSCRIPTEN_KEEPALIVE
-int get_result_width() {
-  return result[1];
-}
-
-EMSCRIPTEN_KEEPALIVE
-int get_result_height() {
-  return result[2];
-}
-