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Fix gif speed #69

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Fix gif speed #69

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ec7f91c
Fix gif speed
lwj1994 Nov 26, 2024
f51b6f9
Delete unused code
lwj1994 Dec 13, 2024
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32 changes: 31 additions & 1 deletion lib/src/extended_image_provider.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@ import 'dart:async';
// ignore: unnecessary_import
import 'dart:typed_data';
import 'dart:ui' as ui show Codec, ImmutableBuffer;

import 'package:collection/collection.dart';
import 'package:extended_image_library/src/extended_resize_image_provider.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/painting.dart' hide imageCache;
Expand Down Expand Up @@ -62,10 +64,38 @@ mixin ExtendedImageProvider<T extends Object> on ImageProvider<T> {
rawImageDataMap[this] = data;
}
final ui.ImmutableBuffer buffer =
await ui.ImmutableBuffer.fromUint8List(data);
await ui.ImmutableBuffer.fromUint8List(await _tryFixAimSpeed(data));
return await decode(buffer);
}

Future<Uint8List> _tryFixAimSpeed(Uint8List image) async {
return await compute((Uint8List image) {
bool handled = false;
// gif
if (!handled) {
try {
for (int i = 0; i < image.length - 2; i++) {
final Uint8List slice = image.sublist(i, i + 3);
if (const ListEquality<int>()
.equals(slice, <int>[0x21, 0xF9, 0x04])) {
final int delay1 = image[i + 4];
final int delay2 = image[i + 5];
final int delay = delay1 | (delay2 << 8);
// min 100ms
if (delay < 10) {
image[i + 4] = 0x0A;
}
}
}
handled = true;
} catch (e) {
//
}
}
return image;
}, image);
}

/// Called by [resolve] with the key returned by [obtainKey].
///
/// Subclasses should override this method rather than calling [obtainKey] if
Expand Down