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/*
* Wire
* Copyright (C) 2020 Wire Swiss GmbH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*
*/
importScripts('jimp.min.js');
/**
* @typedef {{buffer: ArrayBuffer, useProfileImageSize?: boolean}} Data
*/
self.addEventListener('message', (/** @type {MessageEvent<Data>} */ event) => {
const COMPRESSION = 80;
let MAX_SIZE = 1448;
let MAX_FILE_SIZE = 310 * 1024;
if (event.data.useProfileImageSize) {
MAX_SIZE = 280;
MAX_FILE_SIZE = 1024 * 1024;
}
// Unfortunately, Jimp doesn't support MIME type "image/webp": https://github.com/oliver-moran/jimp/issues/144
Jimp.read(event.data.buffer).then(image => {
if (event.data.useProfileImageSize) {
image.cover(MAX_SIZE, MAX_SIZE);
} else if (image.bitmap.width > MAX_SIZE || image.bitmap.height > MAX_SIZE) {
image.scaleToFit(MAX_SIZE, MAX_SIZE);
}
if (image.bitmap.data.length > MAX_FILE_SIZE) {
image.quality(COMPRESSION);
}
return image.getBuffer(Jimp.AUTO, (_error, src) => {
self.postMessage(src);
return self.close();
});
});
});
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