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491f0cd08a
* Copyright headers 1 * Licence headers 2 * Copyright Headers 3 * Copyright Headers 4 * Copyright Headers 5 * Copyright Headers 6 * Copyright headers 7 * Add copyright headers for html and config file * Replace license files and update package.json * Update with CLA * lint
36 lines
898 B
TypeScript
36 lines
898 B
TypeScript
/*
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Copyright 2024 New Vector Ltd.
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Copyright 2021 The Matrix.org Foundation C.I.C.
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SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
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Please see LICENSE files in the repository root for full details.
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*/
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import { encode } from "blurhash";
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import { WorkerPayload } from "./worker";
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const ctx: Worker = self as any;
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export interface Request {
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imageData: ImageData;
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}
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export interface Response {
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blurhash: string;
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}
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ctx.addEventListener("message", (event: MessageEvent<Request & WorkerPayload>): void => {
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const { seq, imageData } = event.data;
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const blurhash = encode(
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imageData.data,
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imageData.width,
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imageData.height,
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// use 4 components on the longer dimension, if square then both
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imageData.width >= imageData.height ? 4 : 3,
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imageData.height >= imageData.width ? 4 : 3,
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);
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ctx.postMessage({ seq, blurhash });
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});
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