Files
squoosh/src/codecs/optipng/encoder.ts
Jake Archibald 43def798e1 Two workers & worker termination (#198)
* Refactoring codecs

* Plugging in new processor

* Fixing decorator

* MozJPEG free issue

* Better worker aborting, and terminate workers that aren't used for 10 seconds

* Better comment

* Ooops, half-typed comment

* Uncommenting problematic line

* Surma fixed it!

* Abstracting WASM initialisation

* Better comment

* Don't need this.

* Adding ticket

* noInitalRun

* Reverting MozJPEG issue demo

* Making a const for worker timeout

* Inline docs

* Bail early rather than nesting

* Addressing nits
2018-10-28 09:17:43 +00:00

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import optipng, { OptiPngModule } from '../../../codecs/optipng/optipng';
import wasmUrl from '../../../codecs/optipng/optipng.wasm';
import { EncodeOptions } from './encoder-meta';
import { initWasmModule } from '../util';
let emscriptenModule: Promise<OptiPngModule>;
export async function compress(data: BufferSource, options: EncodeOptions): Promise<ArrayBuffer> {
if (!emscriptenModule) emscriptenModule = initWasmModule(optipng, wasmUrl);
const module = await emscriptenModule;
const resultView = module.compress(data, options);
const result = new Uint8Array(resultView);
module.free_result();
// wasm cant run on SharedArrayBuffers, so we hard-cast to ArrayBuffer.
return result.buffer as ArrayBuffer;
}