99 lines
3 KiB
Dart
99 lines
3 KiB
Dart
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/*
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* Famedly App
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* Copyright (C) 2020 Famedly GmbH
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import 'dart:typed_data';
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import 'dart:ui';
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import 'package:famedlysdk/famedlysdk.dart';
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import 'package:native_imaging/native_imaging.dart' as native;
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extension RoomSendFileExtension on Room {
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Future<String> sendFileEventWithThumbnail(
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MatrixFile file, {
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String txid,
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Event inReplyTo,
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String editEventId,
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bool waitUntilSent,
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}) async {
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MatrixFile thumbnail;
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try {
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if (file is MatrixImageFile) {
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await native.init();
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var nativeImg = native.Image();
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try {
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await nativeImg.loadEncoded(file.bytes);
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file.width = nativeImg.width();
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file.height = nativeImg.height();
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} on UnsupportedError {
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final dartCodec = await instantiateImageCodec(file.bytes);
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final dartFrame = await dartCodec.getNextFrame();
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file.width = dartFrame.image.width;
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file.height = dartFrame.image.height;
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final rgbaData = await dartFrame.image.toByteData();
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final rgba = Uint8List.view(
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rgbaData.buffer, rgbaData.offsetInBytes, rgbaData.lengthInBytes);
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dartFrame.image.dispose();
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dartCodec.dispose();
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nativeImg.loadRGBA(file.width, file.height, rgba);
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}
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const max = 800;
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if (file.width > max || file.height > max) {
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var w = max, h = max;
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if (file.width > file.height) {
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h = max * file.height ~/ file.width;
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} else {
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w = max * file.width ~/ file.height;
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}
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final scaledImg = nativeImg.resample(w, h, native.Transform.lanczos);
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nativeImg.free();
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nativeImg = scaledImg;
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}
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final jpegBytes = await nativeImg.toJpeg(75);
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file.blurhash = nativeImg.toBlurhash(3, 3);
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thumbnail = MatrixImageFile(
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bytes: jpegBytes,
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name: 'thumbnail.jpg',
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mimeType: 'image/jpeg',
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width: nativeImg.width(),
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height: nativeImg.height(),
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);
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nativeImg.free();
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if (thumbnail.size > file.size ~/ 2) {
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thumbnail = null;
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}
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}
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} catch (e) {
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// send no thumbnail
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}
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return sendFileEvent(
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file,
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txid: txid,
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inReplyTo: inReplyTo,
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editEventId: editEventId,
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waitUntilSent: waitUntilSent ?? false,
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thumbnail: thumbnail,
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);
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}
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}
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