Properly split encoder and decoder

codecs/README.md

@@ -1,6 +1,6 @@
 # Codecs
 
-This folder contains a self-contained sub-project for each codec that squoosh supports.
+This folder contains a self-contained sub-project for each encoder and decoder that squoosh supplies.
 
 ## Build
 
@@ -11,22 +11,6 @@ $ npm install
 $ npm run build
 ```
 
-This will build two files: `<codec name>_codec.js` and `<codec name>_codec.wasm`. Due to some current limitations in Emscripten, both of these files have to be served from the root folder. When the `.js` file is loaded, a global `<codec name>` 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 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).
 
-Each codec offers at least 2 functions:
-
-- `void encode(uint8_t* img_in, int width, int height, float quality)`
-- `void decode(???)`
-
-Example:
-
-```html
-<!-- *_codec.{wasm,js} need to be in / -->
-<script src="/mozjpeg_codec.js"></script>
-<script>
-  mozjpeg.onRuntimeInitialized = _ => {
-    const encode = mozjpeg.cwrap('encode', '', ['number', 'number', 'number', 'number']);
-    /* ... */
-  };
-</script>
-```
+Each codec will document its API in its README.

codecs/mozjpeg_enc/.gitignore

@@ -0,0 +1,2 @@
+/*.wasm
+/*.js

codecs/mozjpeg_enc/mozjpeg_enc.c

@@ -7,7 +7,7 @@
 
 EMSCRIPTEN_KEEPALIVE
 int version() {
-  return 0x030301; // Lol harcoded
+  return JPEG_LIB_VERSION;
 }
 
 EMSCRIPTEN_KEEPALIVE

codecs/mozjpeg_enc/package.json

@@ -1,10 +1,10 @@
 {
-  "name": "webp",
+  "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\"' -I node_modules/mozjpeg -o ./mozjpeg_codec.js mozjpeg.c node_modules/mozjpeg/.libs/libjpeg.a"
+    "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"
   },
   "napa": {
     "mozjpeg": "mozilla/mozjpeg#v3.3.1"

codecs/webp_enc/.gitignore

@@ -0,0 +1,2 @@
+/*.wasm
+/*.js

codecs/webp_enc/package.json

@@ -1,8 +1,8 @@
 {
-  "name": "webp",
+  "name": "webp_enc",
   "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\"' -I node_modules/libwebp -o ./webp_codec.js webp.c node_modules/libwebp/src/{dec,dsp,demux,enc,mux,utils}/*.c"
+    "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_enc\"' -I node_modules/libwebp -o ./webp_enc.js webp_enc.c node_modules/libwebp/src/{dec,dsp,demux,enc,mux,utils}/*.c"
   },
   "napa": {
     "libwebp": "webmproject/libwebp#v0.6.1"