453 lines
13 KiB
Dart
453 lines
13 KiB
Dart
import 'dart:async';
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import 'dart:math';
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import 'dart:typed_data';
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import 'dart:ui';
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import 'package:aves/model/entry.dart';
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import 'package:aves/ref/mime_types.dart';
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import 'package:aves/services/common/image_op_events.dart';
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import 'package:aves/services/common/output_buffer.dart';
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import 'package:aves/services/common/service_policy.dart';
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import 'package:aves/services/common/services.dart';
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import 'package:aves/services/media/enums.dart';
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import 'package:equatable/equatable.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/services.dart';
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import 'package:streams_channel/streams_channel.dart';
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abstract class MediaFileService {
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String get newOpId;
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Future<AvesEntry?> getEntry(String uri, String? mimeType);
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Future<Uint8List> getSvg(
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String uri,
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String mimeType, {
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int? expectedContentLength,
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BytesReceivedCallback? onBytesReceived,
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});
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Future<Uint8List> getImage(
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String uri,
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String mimeType,
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int? rotationDegrees,
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bool isFlipped, {
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int? pageId,
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int? expectedContentLength,
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BytesReceivedCallback? onBytesReceived,
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});
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// `rect`: region to decode, with coordinates in reference to `imageSize`
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Future<Uint8List> getRegion(
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String uri,
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String mimeType,
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int rotationDegrees,
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bool isFlipped,
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int sampleSize,
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Rectangle<int> regionRect,
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Size imageSize, {
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int? pageId,
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Object? taskKey,
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int? priority,
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});
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Future<Uint8List> getThumbnail({
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required String uri,
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required String mimeType,
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required int rotationDegrees,
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required int? pageId,
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required bool isFlipped,
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required int? dateModifiedSecs,
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required double extent,
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Object? taskKey,
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int? priority,
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});
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Future<void> clearSizedThumbnailDiskCache();
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bool cancelRegion(Object taskKey);
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bool cancelThumbnail(Object taskKey);
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Future<T>? resumeLoading<T>(Object taskKey);
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Future<void> cancelFileOp(String opId);
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Stream<ImageOpEvent> delete({
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String? opId,
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required Iterable<AvesEntry> entries,
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});
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Stream<MoveOpEvent> move({
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String? opId,
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required Map<String, Iterable<AvesEntry>> entriesByDestination,
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required bool copy,
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required NameConflictStrategy nameConflictStrategy,
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});
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Stream<ExportOpEvent> export(
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Iterable<AvesEntry> entries, {
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required EntryExportOptions options,
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required String destinationAlbum,
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required NameConflictStrategy nameConflictStrategy,
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});
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Stream<MoveOpEvent> rename(
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Iterable<AvesEntry> entries, {
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required String newName,
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});
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Future<Map<String, dynamic>> captureFrame(
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AvesEntry entry, {
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required String desiredName,
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required Map<String, dynamic> exif,
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required Uint8List bytes,
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required String destinationAlbum,
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required NameConflictStrategy nameConflictStrategy,
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});
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}
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class PlatformMediaFileService implements MediaFileService {
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static const platform = MethodChannel('deckers.thibault/aves/media_file');
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static final StreamsChannel _byteStreamChannel = StreamsChannel('deckers.thibault/aves/media_byte_stream');
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static final StreamsChannel _opStreamChannel = StreamsChannel('deckers.thibault/aves/media_op_stream');
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static const double thumbnailDefaultSize = 64.0;
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static Map<String, dynamic> _toPlatformEntryMap(AvesEntry entry) {
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return {
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'uri': entry.uri,
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'path': entry.path,
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'pageId': entry.pageId,
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'mimeType': entry.mimeType,
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'width': entry.width,
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'height': entry.height,
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'rotationDegrees': entry.rotationDegrees,
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'isFlipped': entry.isFlipped,
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'dateModifiedSecs': entry.dateModifiedSecs,
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'sizeBytes': entry.sizeBytes,
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'trashed': entry.trashed,
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'trashPath': entry.trashDetails?.path,
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};
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}
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@override
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String get newOpId => DateTime.now().millisecondsSinceEpoch.toString();
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@override
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Future<AvesEntry?> getEntry(String uri, String? mimeType) async {
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try {
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final result = await platform.invokeMethod('getEntry', <String, dynamic>{
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'uri': uri,
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'mimeType': mimeType,
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}) as Map;
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return AvesEntry.fromMap(result);
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} on PlatformException catch (e, stack) {
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await reportService.recordError(e, stack);
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}
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return null;
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}
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@override
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Future<Uint8List> getSvg(
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String uri,
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String mimeType, {
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int? expectedContentLength,
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BytesReceivedCallback? onBytesReceived,
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}) =>
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getImage(
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uri,
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mimeType,
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0,
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false,
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expectedContentLength: expectedContentLength,
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onBytesReceived: onBytesReceived,
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);
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@override
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Future<Uint8List> getImage(
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String uri,
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String mimeType,
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int? rotationDegrees,
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bool isFlipped, {
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int? pageId,
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int? expectedContentLength,
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BytesReceivedCallback? onBytesReceived,
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}) async {
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try {
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final completer = Completer<Uint8List>.sync();
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final sink = OutputBuffer();
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var bytesReceived = 0;
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_byteStreamChannel.receiveBroadcastStream(<String, dynamic>{
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'uri': uri,
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'mimeType': mimeType,
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'rotationDegrees': rotationDegrees ?? 0,
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'isFlipped': isFlipped,
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'pageId': pageId,
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}).listen(
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(data) {
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final chunk = data as Uint8List;
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sink.add(chunk);
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if (onBytesReceived != null) {
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bytesReceived += chunk.length;
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try {
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onBytesReceived(bytesReceived, expectedContentLength);
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} catch (error, stack) {
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completer.completeError(error, stack);
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return;
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}
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}
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},
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onError: completer.completeError,
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onDone: () {
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sink.close();
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completer.complete(sink.bytes);
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},
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cancelOnError: true,
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);
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// `await` here, so that `completeError` will be caught below
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return await completer.future;
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} on PlatformException catch (e, stack) {
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if (!MimeTypes.knownMediaTypes.contains(mimeType)) {
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await reportService.recordError(e, stack);
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}
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}
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return Uint8List(0);
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}
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@override
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Future<Uint8List> getRegion(
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String uri,
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String mimeType,
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int rotationDegrees,
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bool isFlipped,
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int sampleSize,
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Rectangle<int> regionRect,
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Size imageSize, {
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int? pageId,
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Object? taskKey,
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int? priority,
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}) {
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return servicePolicy.call(
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() async {
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try {
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final result = await platform.invokeMethod('getRegion', <String, dynamic>{
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'uri': uri,
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'mimeType': mimeType,
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'pageId': pageId,
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'sampleSize': sampleSize,
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'regionX': regionRect.left,
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'regionY': regionRect.top,
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'regionWidth': regionRect.width,
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'regionHeight': regionRect.height,
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'imageWidth': imageSize.width.toInt(),
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'imageHeight': imageSize.height.toInt(),
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});
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if (result != null) return result as Uint8List;
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} on PlatformException catch (e, stack) {
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await reportService.recordError(e, stack);
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}
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return Uint8List(0);
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},
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priority: priority ?? ServiceCallPriority.getRegion,
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key: taskKey,
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);
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}
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@override
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Future<Uint8List> getThumbnail({
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required String uri,
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required String mimeType,
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required int rotationDegrees,
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required int? pageId,
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required bool isFlipped,
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required int? dateModifiedSecs,
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required double extent,
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Object? taskKey,
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int? priority,
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}) {
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return servicePolicy.call(
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() async {
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try {
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final result = await platform.invokeMethod('getThumbnail', <String, dynamic>{
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'uri': uri,
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'mimeType': mimeType,
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'dateModifiedSecs': dateModifiedSecs,
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'rotationDegrees': rotationDegrees,
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'isFlipped': isFlipped,
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'widthDip': extent,
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'heightDip': extent,
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'pageId': pageId,
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'defaultSizeDip': thumbnailDefaultSize,
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});
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if (result != null) return result as Uint8List;
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} on PlatformException catch (e, stack) {
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if (!MimeTypes.knownMediaTypes.contains(mimeType)) {
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await reportService.recordError(e, stack);
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}
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}
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return Uint8List(0);
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},
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priority: priority ?? (extent == 0 ? ServiceCallPriority.getFastThumbnail : ServiceCallPriority.getSizedThumbnail),
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key: taskKey,
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);
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}
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@override
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Future<void> clearSizedThumbnailDiskCache() async {
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try {
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return platform.invokeMethod('clearSizedThumbnailDiskCache');
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} on PlatformException catch (e, stack) {
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await reportService.recordError(e, stack);
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}
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}
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@override
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bool cancelRegion(Object taskKey) => servicePolicy.pause(taskKey, [ServiceCallPriority.getRegion]);
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@override
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bool cancelThumbnail(Object taskKey) => servicePolicy.pause(taskKey, [ServiceCallPriority.getFastThumbnail, ServiceCallPriority.getSizedThumbnail]);
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@override
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Future<T>? resumeLoading<T>(Object taskKey) => servicePolicy.resume<T>(taskKey);
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@override
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Future<void> cancelFileOp(String opId) async {
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try {
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await platform.invokeMethod('cancelFileOp', <String, dynamic>{
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'opId': opId,
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});
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} on PlatformException catch (e, stack) {
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await reportService.recordError(e, stack);
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}
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}
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@override
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Stream<ImageOpEvent> delete({
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String? opId,
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required Iterable<AvesEntry> entries,
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}) {
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try {
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return _opStreamChannel
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.receiveBroadcastStream(<String, dynamic>{
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'op': 'delete',
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'id': opId,
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'entries': entries.map(_toPlatformEntryMap).toList(),
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})
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.where((event) => event is Map)
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.map((event) => ImageOpEvent.fromMap(event as Map));
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} on PlatformException catch (e, stack) {
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reportService.recordError(e, stack);
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return Stream.error(e);
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}
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}
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@override
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Stream<MoveOpEvent> move({
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String? opId,
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required Map<String, Iterable<AvesEntry>> entriesByDestination,
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required bool copy,
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required NameConflictStrategy nameConflictStrategy,
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}) {
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try {
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return _opStreamChannel
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.receiveBroadcastStream(<String, dynamic>{
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'op': 'move',
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'id': opId,
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'entriesByDestination': entriesByDestination.map((destination, entries) => MapEntry(destination, entries.map(_toPlatformEntryMap).toList())),
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'copy': copy,
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'nameConflictStrategy': nameConflictStrategy.toPlatform(),
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})
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.where((event) => event is Map)
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.map((event) => MoveOpEvent.fromMap(event as Map));
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} on PlatformException catch (e, stack) {
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reportService.recordError(e, stack);
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return Stream.error(e);
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}
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}
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@override
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Stream<ExportOpEvent> export(
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Iterable<AvesEntry> entries, {
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required EntryExportOptions options,
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required String destinationAlbum,
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required NameConflictStrategy nameConflictStrategy,
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}) {
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try {
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return _opStreamChannel
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.receiveBroadcastStream(<String, dynamic>{
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'op': 'export',
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'entries': entries.map(_toPlatformEntryMap).toList(),
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'mimeType': options.mimeType,
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'width': options.width,
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'height': options.height,
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'destinationPath': destinationAlbum,
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'nameConflictStrategy': nameConflictStrategy.toPlatform(),
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})
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.where((event) => event is Map)
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.map((event) => ExportOpEvent.fromMap(event as Map));
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} on PlatformException catch (e, stack) {
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reportService.recordError(e, stack);
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return Stream.error(e);
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}
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}
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@override
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Stream<MoveOpEvent> rename(
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Iterable<AvesEntry> entries, {
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required String newName,
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}) {
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try {
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return _opStreamChannel
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.receiveBroadcastStream(<String, dynamic>{
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'op': 'rename',
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'entries': entries.map(_toPlatformEntryMap).toList(),
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'newName': newName,
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})
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.where((event) => event is Map)
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.map((event) => MoveOpEvent.fromMap(event as Map));
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} on PlatformException catch (e, stack) {
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reportService.recordError(e, stack);
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return Stream.error(e);
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}
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}
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@override
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Future<Map<String, dynamic>> captureFrame(
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AvesEntry entry, {
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required String desiredName,
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required Map<String, dynamic> exif,
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required Uint8List bytes,
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required String destinationAlbum,
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required NameConflictStrategy nameConflictStrategy,
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}) async {
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try {
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final result = await platform.invokeMethod('captureFrame', <String, dynamic>{
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'uri': entry.uri,
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'desiredName': desiredName,
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'exif': exif,
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'bytes': bytes,
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'destinationPath': destinationAlbum,
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'nameConflictStrategy': nameConflictStrategy.toPlatform(),
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});
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if (result != null) return (result as Map).cast<String, dynamic>();
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} on PlatformException catch (e, stack) {
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await reportService.recordError(e, stack);
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}
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return {};
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}
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}
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@immutable
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class EntryExportOptions extends Equatable {
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final String mimeType;
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final int width, height;
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@override
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List<Object?> get props => [mimeType, width, height];
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const EntryExportOptions({
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required this.mimeType,
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required this.width,
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required this.height,
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});
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}
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