forked from external-repos/squoosh
9e5b66d5f4
* Port resize to wasm * Expose resize algorithms * Lanczos3 working! * lol copy paste * Adding support for other resizers * Don’t track generated README * Cache wasm instance
22 lines
840 B
TypeScript
22 lines
840 B
TypeScript
import imagequant, { QuantizerModule } from '../../../codecs/imagequant/imagequant';
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import wasmUrl from '../../../codecs/imagequant/imagequant.wasm';
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import { QuantizeOptions } from './processor-meta';
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import { initEmscriptenModule } from '../util';
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let emscriptenModule: Promise<QuantizerModule>;
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export async function process(data: ImageData, opts: QuantizeOptions): Promise<ImageData> {
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if (!emscriptenModule) emscriptenModule = initEmscriptenModule(imagequant, wasmUrl);
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const module = await emscriptenModule;
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const result = opts.zx ?
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module.zx_quantize(data.data, data.width, data.height, opts.dither)
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:
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module.quantize(data.data, data.width, data.height, opts.maxNumColors, opts.dither);
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module.free_result();
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return new ImageData(new Uint8ClampedArray(result.buffer), result.width, result.height);
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}
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