mirror of
https://gitlab.com/famedly/fluffychat.git
synced 2024-11-28 07:19:32 +01:00
291 lines
9.2 KiB
Dart
291 lines
9.2 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_gen/gen_l10n/l10n.dart';
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import 'package:just_audio/just_audio.dart';
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import 'package:matrix/matrix.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:fluffychat/config/app_config.dart';
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import 'package:fluffychat/utils/localized_exception_extension.dart';
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import '../../../utils/matrix_sdk_extensions/event_extension.dart';
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class AudioPlayerWidget extends StatefulWidget {
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final Color color;
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final Event event;
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static String? currentId;
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static const int wavesCount = 40;
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const AudioPlayerWidget(this.event, {this.color = Colors.black, Key? key})
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: super(key: key);
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@override
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AudioPlayerState createState() => AudioPlayerState();
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}
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enum AudioPlayerStatus { notDownloaded, downloading, downloaded }
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class AudioPlayerState extends State<AudioPlayerWidget> {
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AudioPlayerStatus status = AudioPlayerStatus.notDownloaded;
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AudioPlayer? audioPlayer;
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StreamSubscription? onAudioPositionChanged;
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StreamSubscription? onDurationChanged;
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StreamSubscription? onPlayerStateChanged;
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StreamSubscription? onPlayerError;
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String? statusText;
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int currentPosition = 0;
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double maxPosition = 0;
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MatrixFile? matrixFile;
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File? audioFile;
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@override
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void dispose() {
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if (audioPlayer?.playerState.playing == true) {
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audioPlayer?.stop();
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}
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onAudioPositionChanged?.cancel();
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onDurationChanged?.cancel();
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onPlayerStateChanged?.cancel();
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onPlayerError?.cancel();
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super.dispose();
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}
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Future<void> _downloadAction() async {
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if (status != AudioPlayerStatus.notDownloaded) return;
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setState(() => status = AudioPlayerStatus.downloading);
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try {
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final matrixFile = await widget.event.downloadAndDecryptAttachment();
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File? file;
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if (!kIsWeb) {
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final tempDir = await getTemporaryDirectory();
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final fileName = Uri.encodeComponent(
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widget.event.attachmentOrThumbnailMxcUrl()!.pathSegments.last,
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);
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file = File('${tempDir.path}/${fileName}_${matrixFile.name}');
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await file.writeAsBytes(matrixFile.bytes);
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}
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setState(() {
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audioFile = file;
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this.matrixFile = matrixFile;
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status = AudioPlayerStatus.downloaded;
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});
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_playAction();
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} catch (e, s) {
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Logs().v('Could not download audio file', e, s);
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(e.toLocalizedString(context)),
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),
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);
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}
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}
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void _playAction() async {
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final audioPlayer = this.audioPlayer ??= AudioPlayer();
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if (AudioPlayerWidget.currentId != widget.event.eventId) {
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if (AudioPlayerWidget.currentId != null) {
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if (audioPlayer.playerState.playing) {
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await audioPlayer.stop();
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setState(() {});
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}
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}
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AudioPlayerWidget.currentId = widget.event.eventId;
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}
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if (audioPlayer.playerState.playing) {
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await audioPlayer.pause();
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return;
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} else if (audioPlayer.position != Duration.zero) {
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await audioPlayer.play();
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return;
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}
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onAudioPositionChanged ??= audioPlayer.positionStream.listen((state) {
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if (maxPosition <= 0) return;
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setState(() {
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statusText =
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'${state.inMinutes.toString().padLeft(2, '0')}:${(state.inSeconds % 60).toString().padLeft(2, '0')}';
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currentPosition = ((state.inMilliseconds.toDouble() / maxPosition) *
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AudioPlayerWidget.wavesCount)
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.round();
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});
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});
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onDurationChanged ??= audioPlayer.durationStream.listen((max) {
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if (max == null || max == Duration.zero) return;
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setState(() => maxPosition = max.inMilliseconds.toDouble());
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});
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onPlayerStateChanged ??=
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audioPlayer.playingStream.listen((_) => setState(() {}));
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final audioFile = this.audioFile;
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if (audioFile != null) {
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audioPlayer.setFilePath(audioFile.path);
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} else {
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await audioPlayer.setAudioSource(MatrixFileAudioSource(matrixFile!));
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}
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audioPlayer.play().catchError((e, s) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(L10n.of(context)!.oopsSomethingWentWrong),
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),
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);
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Logs().w('Error while playing audio', e, s);
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});
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}
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static const double buttonSize = 36;
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String? get _durationString {
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final durationInt = widget.event.content
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.tryGetMap<String, dynamic>('info')
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?.tryGet<int>('duration');
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if (durationInt == null) return null;
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final duration = Duration(milliseconds: durationInt);
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return '${duration.inMinutes.toString().padLeft(2, '0')}:${(duration.inSeconds % 60).toString().padLeft(2, '0')}';
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}
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List<int> _getWaveform() {
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final eventWaveForm = widget.event.content
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.tryGetMap<String, dynamic>('org.matrix.msc1767.audio')
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?.tryGetList<int>('waveform');
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if (eventWaveForm == null) {
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return List<int>.filled(AudioPlayerWidget.wavesCount, 500);
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}
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while (eventWaveForm.length < AudioPlayerWidget.wavesCount) {
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for (var i = 0; i < eventWaveForm.length; i = i + 2) {
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eventWaveForm.insert(i, eventWaveForm[i]);
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}
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}
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var i = 0;
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final step = (eventWaveForm.length / AudioPlayerWidget.wavesCount).round();
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while (eventWaveForm.length > AudioPlayerWidget.wavesCount) {
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eventWaveForm.removeAt(i);
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i = (i + step) % AudioPlayerWidget.wavesCount;
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}
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return eventWaveForm.map((i) => i > 1024 ? 1024 : i).toList();
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}
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late final List<int> waveform;
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@override
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void initState() {
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super.initState();
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waveform = _getWaveform();
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}
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@override
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Widget build(BuildContext context) {
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final statusText = this.statusText ??= _durationString ?? '00:00';
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return Padding(
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padding: EdgeInsets.all(16 * AppConfig.bubbleSizeFactor),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: <Widget>[
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const SizedBox(width: 4),
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SizedBox(
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width: buttonSize,
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height: buttonSize,
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child: status == AudioPlayerStatus.downloading
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? CircularProgressIndicator(strokeWidth: 2, color: widget.color)
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: InkWell(
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borderRadius: BorderRadius.circular(64),
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child: Material(
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color: widget.color.withAlpha(64),
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borderRadius: BorderRadius.circular(64),
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child: Icon(
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audioPlayer?.playerState.playing == true
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? Icons.pause_outlined
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: Icons.play_arrow_outlined,
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color: widget.color,
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),
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),
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onLongPress: () => widget.event.saveFile(context),
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onTap: () {
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if (status == AudioPlayerStatus.downloaded) {
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_playAction();
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} else {
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_downloadAction();
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}
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},
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),
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),
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const SizedBox(width: 8),
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Expanded(
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child: Row(
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children: [
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for (var i = 0; i < AudioPlayerWidget.wavesCount; i++)
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Expanded(
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child: InkWell(
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onTap: () => audioPlayer?.seek(
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Duration(
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milliseconds:
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(maxPosition / AudioPlayerWidget.wavesCount)
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.round() *
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i,
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),
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),
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child: Container(
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height: 32,
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alignment: Alignment.center,
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child: Opacity(
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opacity: currentPosition > i ? 1 : 0.5,
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child: Container(
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margin: const EdgeInsets.symmetric(horizontal: 1),
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decoration: BoxDecoration(
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color: widget.color,
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borderRadius: BorderRadius.circular(64),
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),
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height: 32 * (waveform[i] / 1024),
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),
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),
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),
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),
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)
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],
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),
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),
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const SizedBox(width: 8),
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Container(
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alignment: Alignment.centerRight,
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width: 42,
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child: Text(
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statusText,
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style: TextStyle(
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color: widget.color,
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),
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),
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),
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],
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),
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);
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}
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}
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/// To use a MatrixFile as an AudioSource for the just_audio package
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class MatrixFileAudioSource extends StreamAudioSource {
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final MatrixFile file;
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MatrixFileAudioSource(this.file);
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@override
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Future<StreamAudioResponse> request([int? start, int? end]) async {
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start ??= 0;
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end ??= file.bytes.length;
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return StreamAudioResponse(
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sourceLength: file.bytes.length,
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contentLength: end - start,
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offset: start,
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stream: Stream.value(file.bytes.sublist(start, end)),
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contentType: file.mimeType,
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);
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}
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}
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