forked from external-repos/squoosh
Typescriptify libsquoosh's codecs and emscripten-utils
This commit is contained in:
ergunsh
425
libsquoosh/src/codecs.ts
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425
libsquoosh/src/codecs.ts
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import { promises as fsp } from 'fs';
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import { instantiateEmscriptenWasm, pathify } from './emscripten-utils';
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interface RotateModuleInstance {
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exports: {
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memory: WebAssembly.Memory;
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rotate(width: number, height: number, rotate: number): void;
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};
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}
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interface ResizeWithAspectParams {
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input_width: number;
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input_height: number;
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target_width: number;
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target_height: number;
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}
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declare global {
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// Needed for being able to use ImageData as type in codec types
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type ImageData = typeof import('./image_data');
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// Needed for being able to assign to `globalThis.ImageData`
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var ImageData: ImageData['constructor'];
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}
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import type { QuantizerModule } from '../../codecs/imagequant/imagequant';
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// MozJPEG
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import mozEnc from '../../codecs/mozjpeg/enc/mozjpeg_node_enc.js';
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import mozEncWasm from 'asset-url:../../codecs/mozjpeg/enc/mozjpeg_node_enc.wasm';
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import mozDec from '../../codecs/mozjpeg/dec/mozjpeg_node_dec.js';
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import mozDecWasm from 'asset-url:../../codecs/mozjpeg/dec/mozjpeg_node_dec.wasm';
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// WebP
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import webpEnc from '../../codecs/webp/enc/webp_node_enc.js';
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import webpEncWasm from 'asset-url:../../codecs/webp/enc/webp_node_enc.wasm';
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import webpDec from '../../codecs/webp/dec/webp_node_dec.js';
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import webpDecWasm from 'asset-url:../../codecs/webp/dec/webp_node_dec.wasm';
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// AVIF
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import avifEnc from '../../codecs/avif/enc/avif_node_enc.js';
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import avifEncWasm from 'asset-url:../../codecs/avif/enc/avif_node_enc.wasm';
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import avifDec from '../../codecs/avif/dec/avif_node_dec.js';
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import avifDecWasm from 'asset-url:../../codecs/avif/dec/avif_node_dec.wasm';
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// JXL
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import jxlEnc from '../../codecs/jxl/enc/jxl_node_enc.js';
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import jxlEncWasm from 'asset-url:../../codecs/jxl/enc/jxl_node_enc.wasm';
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import jxlDec from '../../codecs/jxl/dec/jxl_node_dec.js';
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import jxlDecWasm from 'asset-url:../../codecs/jxl/dec/jxl_node_dec.wasm';
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// WP2
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import wp2Enc from '../../codecs/wp2/enc/wp2_node_enc.js';
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import wp2EncWasm from 'asset-url:../../codecs/wp2/enc/wp2_node_enc.wasm';
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import wp2Dec from '../../codecs/wp2/dec/wp2_node_dec.js';
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import wp2DecWasm from 'asset-url:../../codecs/wp2/dec/wp2_node_dec.wasm';
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// PNG
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import * as pngEncDec from '../../codecs/png/pkg/squoosh_png.js';
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import pngEncDecWasm from 'asset-url:../../codecs/png/pkg/squoosh_png_bg.wasm';
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const pngEncDecPromise = pngEncDec.default(
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fsp.readFile(pathify(pngEncDecWasm)),
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);
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// OxiPNG
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import * as oxipng from '../../codecs/oxipng/pkg/squoosh_oxipng.js';
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import oxipngWasm from 'asset-url:../../codecs/oxipng/pkg/squoosh_oxipng_bg.wasm';
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const oxipngPromise = oxipng.default(fsp.readFile(pathify(oxipngWasm)));
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// Resize
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import * as resize from '../../codecs/resize/pkg/squoosh_resize.js';
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import resizeWasm from 'asset-url:../../codecs/resize/pkg/squoosh_resize_bg.wasm';
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const resizePromise = resize.default(fsp.readFile(pathify(resizeWasm)));
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// rotate
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import rotateWasm from 'asset-url:../../codecs/rotate/rotate.wasm';
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// TODO(ergunsh): Type definitions of some modules do not exist
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// Figure out creating type definitions for them and remove `allowJs` rule
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// We shouldn't need to use Promise<QuantizerModule> below after getting type definitions for imageQuant
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// ImageQuant
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import imageQuant from '../../codecs/imagequant/imagequant_node.js';
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import imageQuantWasm from 'asset-url:../../codecs/imagequant/imagequant_node.wasm';
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const imageQuantPromise: Promise<QuantizerModule> = instantiateEmscriptenWasm(
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imageQuant,
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imageQuantWasm,
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);
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// Our decoders currently rely on a `ImageData` global.
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import ImageData from './image_data';
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globalThis.ImageData = ImageData;
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function resizeNameToIndex(name: string) {
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switch (name) {
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case 'triangle':
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return 0;
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case 'catrom':
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return 1;
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case 'mitchell':
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return 2;
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case 'lanczos3':
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return 3;
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default:
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throw Error(`Unknown resize algorithm "${name}"`);
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}
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}
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function resizeWithAspect({
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input_width,
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input_height,
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target_width,
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target_height,
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}: ResizeWithAspectParams): { width: number; height: number } {
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if (!target_width && !target_height) {
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throw Error('Need to specify at least width or height when resizing');
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}
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if (target_width && target_height) {
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return { width: target_width, height: target_height };
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}
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if (!target_width) {
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return {
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width: Math.round((input_width / input_height) * target_height),
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height: target_height,
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};
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}
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return {
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width: target_width,
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height: Math.round((input_height / input_width) * target_width),
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};
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}
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export const preprocessors = {
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resize: {
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name: 'Resize',
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description: 'Resize the image before compressing',
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instantiate: async () => {
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await resizePromise;
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return (
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buffer: Uint8Array,
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input_width: number,
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input_height: number,
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{
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width,
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height,
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method,
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premultiply,
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linearRGB,
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}: {
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width: number;
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height: number;
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method: string;
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premultiply: boolean;
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linearRGB: boolean;
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},
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) => {
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({ width, height } = resizeWithAspect({
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input_width,
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input_height,
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target_width: width,
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target_height: height,
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}));
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return new ImageData(
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resize.resize(
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buffer,
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input_width,
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input_height,
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width,
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height,
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resizeNameToIndex(method),
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premultiply,
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linearRGB,
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),
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width,
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height,
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);
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};
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},
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defaultOptions: {
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method: 'lanczos3',
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fitMethod: 'stretch',
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premultiply: true,
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linearRGB: true,
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},
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},
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// // TODO: Need to handle SVGs and HQX
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quant: {
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name: 'ImageQuant',
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description: 'Reduce the number of colors used (aka. paletting)',
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instantiate: async () => {
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const imageQuant = await imageQuantPromise;
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return (
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buffer: Uint8Array,
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width: number,
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height: number,
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{ numColors, dither }: { numColors: number; dither: number },
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) =>
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new ImageData(
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imageQuant.quantize(buffer, width, height, numColors, dither),
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width,
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height,
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);
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},
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defaultOptions: {
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numColors: 255,
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dither: 1.0,
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},
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},
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rotate: {
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name: 'Rotate',
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description: 'Rotate image',
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instantiate: async () => {
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return async (
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buffer: Uint8Array,
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width: number,
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height: number,
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{ numRotations }: { numRotations: number },
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) => {
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const degrees = (numRotations * 90) % 360;
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const sameDimensions = degrees == 0 || degrees == 180;
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const size = width * height * 4;
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const instance = (
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await WebAssembly.instantiate(await fsp.readFile(pathify(rotateWasm)))
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).instance as RotateModuleInstance;
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const { memory } = instance.exports;
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const additionalPagesNeeded = Math.ceil(
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(size * 2 - memory.buffer.byteLength + 8) / (64 * 1024),
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);
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if (additionalPagesNeeded > 0) {
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memory.grow(additionalPagesNeeded);
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}
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const view = new Uint8ClampedArray(memory.buffer);
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view.set(buffer, 8);
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instance.exports.rotate(width, height, degrees);
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return new ImageData(
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view.slice(size + 8, size * 2 + 8),
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sameDimensions ? width : height,
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sameDimensions ? height : width,
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);
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};
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},
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defaultOptions: {
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numRotations: 0,
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},
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},
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};
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export const codecs = {
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mozjpeg: {
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name: 'MozJPEG',
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extension: 'jpg',
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detectors: [/^\xFF\xD8\xFF/],
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dec: () => instantiateEmscriptenWasm(mozDec, mozDecWasm),
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enc: () => instantiateEmscriptenWasm(mozEnc, mozEncWasm),
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defaultEncoderOptions: {
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quality: 75,
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baseline: false,
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arithmetic: false,
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progressive: true,
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optimize_coding: true,
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smoothing: 0,
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color_space: 3 /*YCbCr*/,
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quant_table: 3,
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trellis_multipass: false,
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trellis_opt_zero: false,
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trellis_opt_table: false,
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trellis_loops: 1,
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auto_subsample: true,
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chroma_subsample: 2,
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separate_chroma_quality: false,
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chroma_quality: 75,
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},
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autoOptimize: {
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option: 'quality',
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min: 0,
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max: 100,
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},
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},
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webp: {
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name: 'WebP',
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extension: 'webp',
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detectors: [/^RIFF....WEBPVP8[LX ]/],
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dec: () => instantiateEmscriptenWasm(webpDec, webpDecWasm),
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enc: () => instantiateEmscriptenWasm(webpEnc, webpEncWasm),
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defaultEncoderOptions: {
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quality: 75,
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target_size: 0,
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target_PSNR: 0,
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method: 4,
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sns_strength: 50,
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filter_strength: 60,
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filter_sharpness: 0,
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filter_type: 1,
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partitions: 0,
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segments: 4,
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pass: 1,
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show_compressed: 0,
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preprocessing: 0,
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autofilter: 0,
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partition_limit: 0,
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alpha_compression: 1,
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alpha_filtering: 1,
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alpha_quality: 100,
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lossless: 0,
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exact: 0,
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image_hint: 0,
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emulate_jpeg_size: 0,
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thread_level: 0,
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low_memory: 0,
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near_lossless: 100,
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use_delta_palette: 0,
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use_sharp_yuv: 0,
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},
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autoOptimize: {
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option: 'quality',
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min: 0,
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max: 100,
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},
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},
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avif: {
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name: 'AVIF',
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extension: 'avif',
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detectors: [/^\x00\x00\x00 ftypavif\x00\x00\x00\x00/],
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dec: () => instantiateEmscriptenWasm(avifDec, avifDecWasm),
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enc: () => instantiateEmscriptenWasm(avifEnc, avifEncWasm),
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defaultEncoderOptions: {
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cqLevel: 33,
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cqAlphaLevel: -1,
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denoiseLevel: 0,
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tileColsLog2: 0,
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tileRowsLog2: 0,
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speed: 6,
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subsample: 1,
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chromaDeltaQ: false,
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sharpness: 0,
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tune: 0 /* AVIFTune.auto */,
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},
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autoOptimize: {
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option: 'cqLevel',
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min: 0,
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max: 62,
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},
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},
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jxl: {
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name: 'JPEG-XL',
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extension: 'jxl',
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detectors: [/^\xff\x0a/],
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dec: () => instantiateEmscriptenWasm(jxlDec, jxlDecWasm),
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enc: () => instantiateEmscriptenWasm(jxlEnc, jxlEncWasm),
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defaultEncoderOptions: {
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speed: 4,
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quality: 75,
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progressive: false,
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epf: -1,
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nearLossless: 0,
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lossyPalette: false,
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decodingSpeedTier: 0,
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},
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autoOptimize: {
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option: 'quality',
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min: 0,
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max: 100,
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},
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},
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wp2: {
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name: 'WebP2',
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extension: 'wp2',
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detectors: [/^\xF4\xFF\x6F/],
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dec: () => instantiateEmscriptenWasm(wp2Dec, wp2DecWasm),
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enc: () => instantiateEmscriptenWasm(wp2Enc, wp2EncWasm),
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defaultEncoderOptions: {
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quality: 75,
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alpha_quality: 75,
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effort: 5,
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pass: 1,
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sns: 50,
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uv_mode: 0 /*UVMode.UVModeAuto*/,
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csp_type: 0 /*Csp.kYCoCg*/,
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error_diffusion: 0,
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use_random_matrix: false,
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},
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autoOptimize: {
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option: 'quality',
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min: 0,
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max: 100,
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},
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},
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oxipng: {
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name: 'OxiPNG',
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extension: 'png',
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detectors: [/^\x89PNG\x0D\x0A\x1A\x0A/],
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dec: async () => {
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await pngEncDecPromise;
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return { decode: pngEncDec.decode };
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},
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enc: async () => {
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await pngEncDecPromise;
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await oxipngPromise;
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return {
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encode: (
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buffer: Uint8Array,
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width: number,
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height: number,
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opts: { level: number },
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) => {
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const simplePng = pngEncDec.encode(
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new Uint8Array(buffer),
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width,
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height,
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);
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return oxipng.optimise(simplePng, opts.level, false);
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},
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};
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},
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defaultEncoderOptions: {
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level: 2,
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},
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autoOptimize: {
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option: 'level',
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min: 6,
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max: 1,
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},
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},
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};
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