matrix-react-sdk/lib/workers/blurhash.worker.js

SDK for matrix.org using React

"use strict";

var _blurhash = require("blurhash");
/*
Copyright 2024 New Vector Ltd.
Copyright 2021 The Matrix.org Foundation C.I.C.

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/

const ctx = self;
ctx.addEventListener("message", event => {
  const {
    seq,
    imageData
  } = event.data;
  const blurhash = (0, _blurhash.encode)(imageData.data, imageData.width, imageData.height,
  // use 4 components on the longer dimension, if square then both
  imageData.width >= imageData.height ? 4 : 3, imageData.height >= imageData.width ? 4 : 3);
  ctx.postMessage({
    seq,
    blurhash
  });
});
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