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fix: resize images in a separate isolate

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This commit is contained in:
Sorunome 2020-10-06 18:22:50 +02:00
commit a113f99135
6 changed files with 131 additions and 113 deletions
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45
lib/components/dialogs/send_file_dialog.dart
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@ -1,14 +1,11 @@
import 'dart:typed_data';
import 'dart:ui';
import 'package:famedlysdk/famedlysdk.dart';
import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
import 'package:native_imaging/native_imaging.dart' as native;
import '../../components/dialogs/simple_dialogs.dart';
import '../../utils/matrix_file_extension.dart';
import '../../utils/room_send_file_extension.dart';
import '../../utils/resize_image.dart';
class SendFileDialog extends StatefulWidget {
final Room room;
@ -26,46 +23,8 @@ class _SendFileDialogState extends State<SendFileDialog> {
Future<void> _send() async {
var file = widget.file;
if (file is MatrixImageFile && !origImage) {
final imgFile = file as MatrixImageFile;
// resize to max 1600 x 1600
try {
await native.init();
var nativeImg = native.Image();
try {
await nativeImg.loadEncoded(imgFile.bytes);
imgFile.width = nativeImg.width();
imgFile.height = nativeImg.height();
} on UnsupportedError {
final dartCodec = await instantiateImageCodec(imgFile.bytes);
final dartFrame = await dartCodec.getNextFrame();
imgFile.width = dartFrame.image.width;
imgFile.height = dartFrame.image.height;
final rgbaData = await dartFrame.image.toByteData();
final rgba = Uint8List.view(
rgbaData.buffer, rgbaData.offsetInBytes, rgbaData.lengthInBytes);
dartFrame.image.dispose();
dartCodec.dispose();
nativeImg.loadRGBA(imgFile.width, imgFile.height, rgba);
}
const max = 1600;
if (imgFile.width > max || imgFile.height > max) {
var w = max, h = max;
if (imgFile.width > imgFile.height) {
h = max * imgFile.height ~/ imgFile.width;
} else {
w = max * imgFile.width ~/ imgFile.height;
}
final scaledImg = nativeImg.resample(w, h, native.Transform.lanczos);
nativeImg.free();
nativeImg = scaledImg;
}
final jpegBytes = await nativeImg.toJpeg(75);
file = MatrixImageFile(
bytes: jpegBytes,
name: 'scaled_' + imgFile.name.split('.').first + '.jpg');
nativeImg.free();
file = await resizeImage(file, max: 1600);
} catch (e) {
// couldn't resize
}