Playists, looping, shuffling for Android and web
This commit is contained in:
Ryan Heise
parent
6f776eee87
commit
c0c5d0c2bf
8 changed files with 1795 additions and 379 deletions
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@ -1,5 +1,6 @@
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import 'dart:async';
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import 'dart:html';
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import 'dart:math';
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import 'package:async/async.dart';
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import 'package:flutter/services.dart';
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@ -7,6 +8,8 @@ import 'package:flutter/widgets.dart';
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import 'package:flutter_web_plugins/flutter_web_plugins.dart';
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import 'package:just_audio/just_audio.dart';
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final Random _random = Random();
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class JustAudioPlugin {
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static void registerWith(Registrar registrar) {
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final MethodChannel channel = MethodChannel(
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@ -43,6 +46,7 @@ abstract class JustAudioPlayer {
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final StreamController eventController = StreamController();
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AudioPlaybackState _state = AudioPlaybackState.none;
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bool _buffering = false;
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int _index;
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JustAudioPlayer({@required this.id, @required this.registrar})
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: methodChannel = MethodChannel('com.ryanheise.just_audio.methods.$id',
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@ -54,34 +58,55 @@ abstract class JustAudioPlayer {
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}
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Future<dynamic> _methodHandler(MethodCall call) async {
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final args = call.arguments;
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switch (call.method) {
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case 'setUrl':
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return await setUrl(args[0]);
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case 'setClip':
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return await setClip(args[0], args[1]);
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case 'play':
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return await play();
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case 'pause':
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return await pause();
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case 'stop':
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return await stop();
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case 'setVolume':
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return await setVolume(args[0]);
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case 'setSpeed':
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return await setSpeed(args[0]);
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case 'seek':
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return await seek(args[0]);
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case 'dispose':
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return dispose();
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default:
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throw PlatformException(code: 'Unimplemented');
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try {
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final args = call.arguments;
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switch (call.method) {
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case 'load':
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return await load(args[0]);
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case 'play':
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return await play();
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case 'pause':
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return await pause();
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case 'stop':
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return await stop();
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case 'setVolume':
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return await setVolume(args[0]);
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case 'setSpeed':
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return await setSpeed(args[0]);
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case 'setLoopMode':
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return await setLoopMode(args[0]);
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case 'setShuffleModeEnabled':
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return await setShuffleModeEnabled(args[0]);
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case 'seek':
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return await seek(args[0], args[1]);
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case 'dispose':
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return dispose();
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case 'concatenating.add':
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return await concatenatingAdd(args[0], args[1]);
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case "concatenating.insert":
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return await concatenatingInsert(args[0], args[1], args[2]);
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case "concatenating.addAll":
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return await concatenatingAddAll(args[0], args[1]);
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case "concatenating.insertAll":
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return await concatenatingInsertAll(args[0], args[1], args[2]);
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case "concatenating.removeAt":
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return await concatenatingRemoveAt(args[0], args[1]);
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case "concatenating.removeRange":
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return await concatenatingRemoveRange(args[0], args[1], args[2]);
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case "concatenating.move":
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return await concatenatingMove(args[0], args[1], args[2]);
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case "concatenating.clear":
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return await concatenatingClear(args[0]);
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default:
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throw PlatformException(code: 'Unimplemented');
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}
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} catch (e, stacktrace) {
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print("$stacktrace");
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rethrow;
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}
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}
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Future<int> setUrl(final String url);
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Future<void> setClip(int start, int end);
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Future<int> load(Map source);
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Future<void> play();
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@ -93,37 +118,51 @@ abstract class JustAudioPlayer {
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Future<void> setSpeed(double speed);
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Future<void> seek(int position);
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Future<void> setLoopMode(int mode);
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Future<void> setShuffleModeEnabled(bool enabled);
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Future<void> seek(int position, int index);
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@mustCallSuper
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void dispose() {
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eventController.close();
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}
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double getCurrentPosition();
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Duration getCurrentPosition();
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int getCurrentPositionMs() => (getCurrentPosition() * 1000).toInt();
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Duration getDuration();
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double getDuration();
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concatenatingAdd(String playerId, Map source);
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int getDurationMs() {
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final duration = getDuration();
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return duration.isFinite ? (duration * 1000).toInt() : -1;
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}
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concatenatingInsert(String playerId, int index, Map source);
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concatenatingAddAll(String playerId, List sources);
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concatenatingInsertAll(String playerId, int index, List sources);
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concatenatingRemoveAt(String playerId, int index);
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concatenatingRemoveRange(String playerId, int start, int end);
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concatenatingMove(String playerId, int currentIndex, int newIndex);
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concatenatingClear(String playerId);
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broadcastPlaybackEvent() {
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var updateTime = DateTime.now().millisecondsSinceEpoch;
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eventController.add([
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_state.index,
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_buffering,
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getCurrentPositionMs(),
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updateTime,
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eventController.add({
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'state': _state.index,
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'buffering': _buffering,
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'updatePosition': getCurrentPosition()?.inMilliseconds,
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'updateTime': updateTime,
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// TODO: buffered position
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getCurrentPositionMs(),
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'bufferedPosition': getCurrentPosition()?.inMilliseconds,
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// TODO: Icy Metadata
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null,
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getDurationMs(),
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]);
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'icyMetadata': null,
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'duration': getDuration()?.inMilliseconds,
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'currentIndex': _index,
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});
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}
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transition(AudioPlaybackState state) {
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@ -134,22 +173,23 @@ abstract class JustAudioPlayer {
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class Html5AudioPlayer extends JustAudioPlayer {
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AudioElement _audioElement = AudioElement();
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Completer<num> _durationCompleter;
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double _startPos = 0.0;
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double _start = 0.0;
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double _end;
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CancelableOperation _playOperation;
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Completer _durationCompleter;
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AudioSourcePlayer _audioSourcePlayer;
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LoopMode _loopMode = LoopMode.off;
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bool _shuffleModeEnabled = false;
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bool _playing = false;
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final Map<String, AudioSourcePlayer> _audioSourcePlayers = {};
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Html5AudioPlayer({@required String id, @required Registrar registrar})
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: super(id: id, registrar: registrar) {
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_audioElement.addEventListener('durationchange', (event) {
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_durationCompleter?.complete(getDuration());
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_durationCompleter?.complete();
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});
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_audioElement.addEventListener('error', (event) {
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_durationCompleter?.completeError(_audioElement.error);
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});
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_audioElement.addEventListener('ended', (event) {
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transition(AudioPlaybackState.completed);
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_audioElement.addEventListener('ended', (event) async {
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onEnded();
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});
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_audioElement.addEventListener('seek', (event) {
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_buffering = true;
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@ -161,72 +201,124 @@ class Html5AudioPlayer extends JustAudioPlayer {
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});
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}
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@override
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Future<int> setUrl(final String url) async {
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_interruptPlay();
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transition(AudioPlaybackState.connecting);
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_durationCompleter = Completer<num>();
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_audioElement.src = url;
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_audioElement.preload = 'auto';
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_audioElement.load();
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try {
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await _durationCompleter.future;
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} on MediaError catch (e) {
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throw PlatformException(code: "${e.code}", message: "Failed to load URL");
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} finally {
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_durationCompleter = null;
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List<int> get order {
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final sequence = _audioSourcePlayer.sequence;
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List<int> order = List<int>(sequence.length);
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if (_shuffleModeEnabled) {
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order = _audioSourcePlayer.shuffleOrder;
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} else {
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for (var i = 0; i < order.length; i++) {
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order[i] = i;
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}
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}
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transition(AudioPlaybackState.stopped);
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return getDurationMs();
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return order;
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}
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List<int> getInv(List<int> order) {
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List<int> orderInv = List<int>(order.length);
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for (var i = 0; i < order.length; i++) {
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orderInv[order[i]] = i;
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}
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return orderInv;
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}
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onEnded() async {
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if (_loopMode == LoopMode.one) {
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await seek(0, null);
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play();
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} else {
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final order = this.order;
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final orderInv = getInv(order);
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if (orderInv[_index] + 1 < order.length) {
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// move to next item
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_index = order[orderInv[_index] + 1];
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await _currentAudioSourcePlayer.load();
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// Should always be true...
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if (_playing) {
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play();
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}
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} else {
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// reached end of playlist
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if (_loopMode == LoopMode.all) {
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// Loop back to the beginning
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if (order.length == 1) {
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await seek(0, null);
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await play();
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} else {
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_index = order[0];
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await _currentAudioSourcePlayer.load();
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// Should always be true...
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if (_playing) {
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await play();
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}
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}
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} else {
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_playing = false;
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transition(AudioPlaybackState.completed);
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}
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}
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}
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}
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// TODO: Improve efficiency.
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IndexedAudioSourcePlayer get _currentAudioSourcePlayer =>
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_audioSourcePlayer != null && _index < _audioSourcePlayer.sequence.length
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? _audioSourcePlayer.sequence[_index]
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: null;
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@override
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Future<void> setClip(int start, int end) async {
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_interruptPlay();
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_start = start / 1000.0;
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_end = end / 1000.0;
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_startPos = _start;
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Future<int> load(Map source) async {
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_currentAudioSourcePlayer?.pause();
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_audioSourcePlayer = getAudioSource(source);
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_index = 0;
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if (_shuffleModeEnabled) {
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_audioSourcePlayer?.shuffle(0, _index);
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}
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return (await _currentAudioSourcePlayer.load()).inMilliseconds;
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}
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Future<Duration> loadUri(final Uri uri) async {
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transition(AudioPlaybackState.connecting);
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final src = uri.toString();
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if (src != _audioElement.src) {
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_durationCompleter = Completer<num>();
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_audioElement.src = src;
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_audioElement.preload = 'auto';
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_audioElement.load();
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try {
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await _durationCompleter.future;
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} on MediaError catch (e) {
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throw PlatformException(
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code: "${e.code}", message: "Failed to load URL");
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} finally {
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_durationCompleter = null;
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}
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}
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transition(AudioPlaybackState.stopped);
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final seconds = _audioElement.duration;
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return seconds.isFinite
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? Duration(milliseconds: (seconds * 1000).toInt())
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: null;
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}
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@override
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Future<void> play() async {
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_interruptPlay();
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final duration = _end == null ? null : _end - _startPos;
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_audioElement.currentTime = _startPos;
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_audioElement.play();
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if (duration != null) {
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_playOperation = CancelableOperation.fromFuture(Future.delayed(Duration(
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milliseconds: duration * 1000 ~/ _audioElement.playbackRate)))
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.then((_) {
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pause();
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_playOperation = null;
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});
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}
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_playing = true;
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_currentAudioSourcePlayer.play();
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transition(AudioPlaybackState.playing);
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}
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_interruptPlay() {
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if (_playOperation != null) {
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_playOperation.cancel();
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_playOperation = null;
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}
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}
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@override
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Future<void> pause() async {
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_interruptPlay();
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_startPos = _audioElement.currentTime;
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_audioElement.pause();
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_playing = false;
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_currentAudioSourcePlayer.pause();
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transition(AudioPlaybackState.paused);
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}
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@override
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Future<void> stop() async {
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_interruptPlay();
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_startPos = _start;
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_audioElement.pause();
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_audioElement.currentTime = _start;
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_playing = false;
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_currentAudioSourcePlayer.stop();
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transition(AudioPlaybackState.stopped);
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}
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@ -241,25 +333,568 @@ class Html5AudioPlayer extends JustAudioPlayer {
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}
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@override
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Future<void> seek(int position) async {
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_interruptPlay();
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_startPos = _start + position / 1000.0;
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_audioElement.currentTime = _startPos;
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Future<void> setLoopMode(int mode) async {
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_loopMode = LoopMode.values[mode];
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}
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@override
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double getCurrentPosition() => _audioElement.currentTime;
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Future<void> setShuffleModeEnabled(bool enabled) async {
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_shuffleModeEnabled = enabled;
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if (enabled) {
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_audioSourcePlayer?.shuffle(0, _index);
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}
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}
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@override
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double getDuration() => _audioElement.duration;
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Future<void> seek(int position, int newIndex) async {
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int index = newIndex ?? _index;
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if (index != _index) {
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_currentAudioSourcePlayer.pause();
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_index = index;
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await _currentAudioSourcePlayer.load();
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await _currentAudioSourcePlayer.seek(position);
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if (_playing) {
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await play();
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}
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} else {
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await _currentAudioSourcePlayer.seek(position);
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}
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}
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ConcatenatingAudioSourcePlayer _concatenating(String playerId) =>
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_audioSourcePlayers[playerId] as ConcatenatingAudioSourcePlayer;
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concatenatingAdd(String playerId, Map source) {
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final playlist = _concatenating(playerId);
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playlist.add(getAudioSource(source));
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}
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concatenatingInsert(String playerId, int index, Map source) {
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_concatenating(playerId).insert(index, getAudioSource(source));
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if (index <= _index) {
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_index++;
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}
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}
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concatenatingAddAll(String playerId, List sources) {
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_concatenating(playerId).addAll(getAudioSources(sources));
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}
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concatenatingInsertAll(String playerId, int index, List sources) {
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_concatenating(playerId).insertAll(index, getAudioSources(sources));
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if (index <= _index) {
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_index += sources.length;
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}
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}
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concatenatingRemoveAt(String playerId, int index) async {
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// Pause if removing current item
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if (_index == index && _playing) {
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_currentAudioSourcePlayer.pause();
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}
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_concatenating(playerId).removeAt(index);
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if (_index == index) {
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// Skip backward if there's nothing after this
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if (index == _audioSourcePlayer.sequence.length) {
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_index--;
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}
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// Resume playback at the new item (if it exists)
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if (_playing && _currentAudioSourcePlayer != null) {
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await _currentAudioSourcePlayer.load();
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_currentAudioSourcePlayer.play();
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}
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} else if (index < _index) {
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// Reflect that the current item has shifted its position
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_index--;
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}
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}
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concatenatingRemoveRange(String playerId, int start, int end) async {
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if (_index >= start && _index < end && _playing) {
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// Pause if removing current item
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_currentAudioSourcePlayer.pause();
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}
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_concatenating(playerId).removeRange(start, end);
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if (_index >= start && _index < end) {
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// Skip backward if there's nothing after this
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if (start >= _audioSourcePlayer.sequence.length) {
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_index = start - 1;
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} else {
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_index = start;
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}
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// Resume playback at the new item (if it exists)
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if (_playing && _currentAudioSourcePlayer != null) {
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await _currentAudioSourcePlayer.load();
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_currentAudioSourcePlayer.play();
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}
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} else if (end <= _index) {
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// Reflect that the current item has shifted its position
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_index -= (end - start);
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}
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}
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concatenatingMove(String playerId, int currentIndex, int newIndex) {
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_concatenating(playerId).move(currentIndex, newIndex);
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if (currentIndex == _index) {
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_index = newIndex;
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} else if (currentIndex < _index && newIndex >= _index) {
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_index--;
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} else if (currentIndex > _index && newIndex <= _index) {
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_index++;
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}
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}
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concatenatingClear(String playerId) {
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_currentAudioSourcePlayer.stop();
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_concatenating(playerId).clear();
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}
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@override
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Duration getCurrentPosition() => _currentAudioSourcePlayer?.position;
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@override
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Duration getDuration() => _currentAudioSourcePlayer?.duration;
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||||
@override
|
||||
void dispose() {
|
||||
_interruptPlay();
|
||||
_audioElement.pause();
|
||||
_currentAudioSourcePlayer?.pause();
|
||||
_audioElement.removeAttribute('src');
|
||||
_audioElement.load();
|
||||
transition(AudioPlaybackState.none);
|
||||
super.dispose();
|
||||
}
|
||||
|
||||
List<AudioSourcePlayer> getAudioSources(List json) =>
|
||||
json.map((s) => getAudioSource(s)).toList();
|
||||
|
||||
AudioSourcePlayer getAudioSource(Map json) {
|
||||
final String id = json['id'];
|
||||
var audioSourcePlayer = _audioSourcePlayers[id];
|
||||
if (audioSourcePlayer == null) {
|
||||
audioSourcePlayer = decodeAudioSource(json);
|
||||
_audioSourcePlayers[id] = audioSourcePlayer;
|
||||
}
|
||||
return audioSourcePlayer;
|
||||
}
|
||||
|
||||
AudioSourcePlayer decodeAudioSource(Map json) {
|
||||
try {
|
||||
switch (json['type']) {
|
||||
case 'progressive':
|
||||
return ProgressiveAudioSourcePlayer(
|
||||
this, json['id'], Uri.parse(json['uri']), json['headers']);
|
||||
case "dash":
|
||||
return DashAudioSourcePlayer(
|
||||
this, json['id'], Uri.parse(json['uri']), json['headers']);
|
||||
case "hls":
|
||||
return HlsAudioSourcePlayer(
|
||||
this, json['id'], Uri.parse(json['uri']), json['headers']);
|
||||
case "concatenating":
|
||||
return ConcatenatingAudioSourcePlayer(
|
||||
this,
|
||||
json['id'],
|
||||
getAudioSources(json['audioSources']),
|
||||
json['useLazyPreparation']);
|
||||
case "clipping":
|
||||
return ClippingAudioSourcePlayer(
|
||||
this,
|
||||
json['id'],
|
||||
getAudioSource(json['audioSource']),
|
||||
Duration(milliseconds: json['start']),
|
||||
Duration(milliseconds: json['end']));
|
||||
case "looping":
|
||||
return LoopingAudioSourcePlayer(this, json['id'],
|
||||
getAudioSource(json['audioSource']), json['count']);
|
||||
default:
|
||||
throw Exception("Unknown AudioSource type: " + json['type']);
|
||||
}
|
||||
} catch (e, stacktrace) {
|
||||
print("$stacktrace");
|
||||
rethrow;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
abstract class AudioSourcePlayer {
|
||||
Html5AudioPlayer html5AudioPlayer;
|
||||
final String id;
|
||||
|
||||
AudioSourcePlayer(this.html5AudioPlayer, this.id);
|
||||
|
||||
List<IndexedAudioSourcePlayer> get sequence;
|
||||
|
||||
List<int> get shuffleOrder;
|
||||
|
||||
int shuffle(int treeIndex, int currentIndex);
|
||||
}
|
||||
|
||||
abstract class IndexedAudioSourcePlayer extends AudioSourcePlayer {
|
||||
IndexedAudioSourcePlayer(Html5AudioPlayer html5AudioPlayer, String id)
|
||||
: super(html5AudioPlayer, id);
|
||||
|
||||
Future<Duration> load();
|
||||
|
||||
Future<void> play();
|
||||
|
||||
Future<void> pause();
|
||||
|
||||
Future<void> stop();
|
||||
|
||||
Future<void> seek(int position);
|
||||
|
||||
Duration get duration;
|
||||
|
||||
Duration get position;
|
||||
|
||||
AudioElement get _audioElement => html5AudioPlayer._audioElement;
|
||||
|
||||
@override
|
||||
int shuffle(int treeIndex, int currentIndex) => treeIndex + 1;
|
||||
|
||||
@override
|
||||
String toString() => "${this.runtimeType}";
|
||||
}
|
||||
|
||||
abstract class UriAudioSourcePlayer extends IndexedAudioSourcePlayer {
|
||||
final Uri uri;
|
||||
final Map headers;
|
||||
double _resumePos;
|
||||
Duration _duration;
|
||||
|
||||
UriAudioSourcePlayer(
|
||||
Html5AudioPlayer html5AudioPlayer, String id, this.uri, this.headers)
|
||||
: super(html5AudioPlayer, id);
|
||||
|
||||
@override
|
||||
List<IndexedAudioSourcePlayer> get sequence => [this];
|
||||
|
||||
@override
|
||||
List<int> get shuffleOrder => [0];
|
||||
|
||||
@override
|
||||
Future<Duration> load() async {
|
||||
_resumePos = 0.0;
|
||||
return _duration = await html5AudioPlayer.loadUri(uri);
|
||||
}
|
||||
|
||||
@override
|
||||
Future<void> play() async {
|
||||
_audioElement.currentTime = _resumePos;
|
||||
_audioElement.play();
|
||||
}
|
||||
|
||||
@override
|
||||
Future<void> pause() async {
|
||||
_resumePos = _audioElement.currentTime;
|
||||
_audioElement.pause();
|
||||
}
|
||||
|
||||
@override
|
||||
Future<void> seek(int position) async {
|
||||
_audioElement.currentTime = _resumePos = position / 1000.0;
|
||||
}
|
||||
|
||||
@override
|
||||
Future<void> stop() async {
|
||||
_resumePos = 0.0;
|
||||
_audioElement.pause();
|
||||
_audioElement.currentTime = 0.0;
|
||||
}
|
||||
|
||||
@override
|
||||
Duration get duration {
|
||||
return _duration;
|
||||
//final seconds = _audioElement.duration;
|
||||
//return seconds.isFinite
|
||||
// ? Duration(milliseconds: (seconds * 1000).toInt())
|
||||
// : null;
|
||||
}
|
||||
|
||||
@override
|
||||
Duration get position {
|
||||
double seconds = _audioElement.currentTime;
|
||||
return Duration(milliseconds: (seconds * 1000).toInt());
|
||||
}
|
||||
}
|
||||
|
||||
class ProgressiveAudioSourcePlayer extends UriAudioSourcePlayer {
|
||||
ProgressiveAudioSourcePlayer(
|
||||
Html5AudioPlayer html5AudioPlayer, String id, Uri uri, Map headers)
|
||||
: super(html5AudioPlayer, id, uri, headers);
|
||||
}
|
||||
|
||||
class DashAudioSourcePlayer extends UriAudioSourcePlayer {
|
||||
DashAudioSourcePlayer(
|
||||
Html5AudioPlayer html5AudioPlayer, String id, Uri uri, Map headers)
|
||||
: super(html5AudioPlayer, id, uri, headers);
|
||||
}
|
||||
|
||||
class HlsAudioSourcePlayer extends UriAudioSourcePlayer {
|
||||
HlsAudioSourcePlayer(
|
||||
Html5AudioPlayer html5AudioPlayer, String id, Uri uri, Map headers)
|
||||
: super(html5AudioPlayer, id, uri, headers);
|
||||
}
|
||||
|
||||
class ConcatenatingAudioSourcePlayer extends AudioSourcePlayer {
|
||||
static List<int> generateShuffleOrder(int length, [int firstIndex]) {
|
||||
final shuffleOrder = List<int>(length);
|
||||
for (var i = 0; i < length; i++) {
|
||||
final j = _random.nextInt(i + 1);
|
||||
shuffleOrder[i] = shuffleOrder[j];
|
||||
shuffleOrder[j] = i;
|
||||
}
|
||||
if (firstIndex != null) {
|
||||
for (var i = 1; i < length; i++) {
|
||||
if (shuffleOrder[i] == firstIndex) {
|
||||
final v = shuffleOrder[0];
|
||||
shuffleOrder[0] = shuffleOrder[i];
|
||||
shuffleOrder[i] = v;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
return shuffleOrder;
|
||||
}
|
||||
|
||||
final List<AudioSourcePlayer> audioSourcePlayers;
|
||||
final bool useLazyPreparation;
|
||||
List<int> _shuffleOrder;
|
||||
|
||||
ConcatenatingAudioSourcePlayer(Html5AudioPlayer html5AudioPlayer, String id,
|
||||
this.audioSourcePlayers, this.useLazyPreparation)
|
||||
: _shuffleOrder = generateShuffleOrder(audioSourcePlayers.length),
|
||||
super(html5AudioPlayer, id);
|
||||
|
||||
@override
|
||||
List<IndexedAudioSourcePlayer> get sequence =>
|
||||
audioSourcePlayers.expand((p) => p.sequence).toList();
|
||||
|
||||
@override
|
||||
List<int> get shuffleOrder {
|
||||
final order = <int>[];
|
||||
var offset = order.length;
|
||||
final childOrders = <List<int>>[];
|
||||
for (var audioSourcePlayer in audioSourcePlayers) {
|
||||
final childShuffleOrder = audioSourcePlayer.shuffleOrder;
|
||||
childOrders.add(childShuffleOrder.map((i) => i + offset).toList());
|
||||
offset += childShuffleOrder.length;
|
||||
}
|
||||
for (var i = 0; i < childOrders.length; i++) {
|
||||
order.addAll(childOrders[_shuffleOrder[i]]);
|
||||
}
|
||||
return order;
|
||||
}
|
||||
|
||||
@override
|
||||
int shuffle(int treeIndex, int currentIndex) {
|
||||
int currentChildIndex;
|
||||
for (var i = 0; i < audioSourcePlayers.length; i++) {
|
||||
final indexBefore = treeIndex;
|
||||
final child = audioSourcePlayers[i];
|
||||
treeIndex = child.shuffle(treeIndex, currentIndex);
|
||||
if (currentIndex >= indexBefore && currentIndex < treeIndex) {
|
||||
currentChildIndex = i;
|
||||
} else {}
|
||||
}
|
||||
// Shuffle so that the current child is first in the shuffle order
|
||||
_shuffleOrder =
|
||||
generateShuffleOrder(audioSourcePlayers.length, currentChildIndex);
|
||||
return treeIndex;
|
||||
}
|
||||
|
||||
add(AudioSourcePlayer player) {
|
||||
audioSourcePlayers.add(player);
|
||||
_shuffleOrder.add(audioSourcePlayers.length - 1);
|
||||
}
|
||||
|
||||
insert(int index, AudioSourcePlayer player) {
|
||||
audioSourcePlayers.insert(index, player);
|
||||
for (var i = 0; i < audioSourcePlayers.length; i++) {
|
||||
if (_shuffleOrder[i] >= index) {
|
||||
_shuffleOrder[i]++;
|
||||
}
|
||||
}
|
||||
_shuffleOrder.add(index);
|
||||
}
|
||||
|
||||
addAll(List<AudioSourcePlayer> players) {
|
||||
audioSourcePlayers.addAll(players);
|
||||
_shuffleOrder.addAll(
|
||||
List.generate(players.length, (i) => audioSourcePlayers.length + i)
|
||||
.toList()
|
||||
..shuffle());
|
||||
}
|
||||
|
||||
insertAll(int index, List<AudioSourcePlayer> players) {
|
||||
audioSourcePlayers.insertAll(index, players);
|
||||
for (var i = 0; i < audioSourcePlayers.length; i++) {
|
||||
if (_shuffleOrder[i] >= index) {
|
||||
_shuffleOrder[i] += players.length;
|
||||
}
|
||||
}
|
||||
_shuffleOrder.addAll(
|
||||
List.generate(players.length, (i) => index + i).toList()..shuffle());
|
||||
}
|
||||
|
||||
removeAt(int index) {
|
||||
audioSourcePlayers.removeAt(index);
|
||||
// 0 1 2 3
|
||||
// 3 2 0 1
|
||||
for (var i = 0; i < audioSourcePlayers.length; i++) {
|
||||
if (_shuffleOrder[i] > index) {
|
||||
_shuffleOrder[i]--;
|
||||
}
|
||||
}
|
||||
_shuffleOrder.removeWhere((i) => i == index);
|
||||
}
|
||||
|
||||
removeRange(int start, int end) {
|
||||
audioSourcePlayers.removeRange(start, end);
|
||||
for (var i = 0; i < audioSourcePlayers.length; i++) {
|
||||
if (_shuffleOrder[i] >= end) {
|
||||
_shuffleOrder[i] -= (end - start);
|
||||
}
|
||||
}
|
||||
_shuffleOrder.removeWhere((i) => i >= start && i < end);
|
||||
}
|
||||
|
||||
move(int currentIndex, int newIndex) {
|
||||
audioSourcePlayers.insert(
|
||||
newIndex, audioSourcePlayers.removeAt(currentIndex));
|
||||
}
|
||||
|
||||
clear() {
|
||||
audioSourcePlayers.clear();
|
||||
_shuffleOrder.clear();
|
||||
}
|
||||
}
|
||||
|
||||
class ClippingAudioSourcePlayer extends IndexedAudioSourcePlayer {
|
||||
final UriAudioSourcePlayer audioSourcePlayer;
|
||||
final Duration start;
|
||||
final Duration end;
|
||||
CancelableOperation _playOperation;
|
||||
double _resumePos;
|
||||
Duration _duration;
|
||||
|
||||
ClippingAudioSourcePlayer(Html5AudioPlayer html5AudioPlayer, String id,
|
||||
this.audioSourcePlayer, this.start, this.end)
|
||||
: super(html5AudioPlayer, id);
|
||||
|
||||
@override
|
||||
List<IndexedAudioSourcePlayer> get sequence => [this];
|
||||
|
||||
@override
|
||||
List<int> get shuffleOrder => [0];
|
||||
|
||||
@override
|
||||
Future<Duration> load() async {
|
||||
_resumePos = start.inMilliseconds / 1000.0;
|
||||
Duration fullDuration =
|
||||
await html5AudioPlayer.loadUri(audioSourcePlayer.uri);
|
||||
_audioElement.currentTime = _resumePos;
|
||||
_duration = Duration(
|
||||
milliseconds: min(end.inMilliseconds, fullDuration.inMilliseconds) -
|
||||
start.inMilliseconds);
|
||||
return _duration;
|
||||
}
|
||||
|
||||
@override
|
||||
Future<void> play() async {
|
||||
_interruptPlay();
|
||||
//_playing = true;
|
||||
final duration =
|
||||
end == null ? null : end.inMilliseconds / 1000 - _resumePos;
|
||||
|
||||
_audioElement.currentTime = _resumePos;
|
||||
_audioElement.play();
|
||||
if (duration != null) {
|
||||
_playOperation = CancelableOperation.fromFuture(Future.delayed(Duration(
|
||||
milliseconds: duration * 1000 ~/ _audioElement.playbackRate)))
|
||||
.then((_) {
|
||||
_playOperation = null;
|
||||
pause();
|
||||
html5AudioPlayer.onEnded();
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
@override
|
||||
Future<void> pause() async {
|
||||
_interruptPlay();
|
||||
_resumePos = _audioElement.currentTime;
|
||||
_audioElement.pause();
|
||||
}
|
||||
|
||||
@override
|
||||
Future<void> seek(int position) async {
|
||||
_interruptPlay();
|
||||
_audioElement.currentTime =
|
||||
_resumePos = start.inMilliseconds / 1000.0 + position / 1000.0;
|
||||
}
|
||||
|
||||
@override
|
||||
Future<void> stop() async {
|
||||
_resumePos = 0.0;
|
||||
_audioElement.pause();
|
||||
_audioElement.currentTime = start.inMilliseconds / 1000.0;
|
||||
}
|
||||
|
||||
@override
|
||||
Duration get duration {
|
||||
return _duration;
|
||||
}
|
||||
|
||||
@override
|
||||
Duration get position {
|
||||
double seconds = _audioElement.currentTime;
|
||||
var position = Duration(milliseconds: (seconds * 1000).toInt());
|
||||
if (start != null) {
|
||||
position -= start;
|
||||
}
|
||||
if (position < Duration.zero) {
|
||||
position = Duration.zero;
|
||||
}
|
||||
return position;
|
||||
}
|
||||
|
||||
_interruptPlay() {
|
||||
_playOperation?.cancel();
|
||||
_playOperation = null;
|
||||
}
|
||||
}
|
||||
|
||||
class LoopingAudioSourcePlayer extends AudioSourcePlayer {
|
||||
final AudioSourcePlayer audioSourcePlayer;
|
||||
final int count;
|
||||
|
||||
LoopingAudioSourcePlayer(Html5AudioPlayer html5AudioPlayer, String id,
|
||||
this.audioSourcePlayer, this.count)
|
||||
: super(html5AudioPlayer, id);
|
||||
|
||||
@override
|
||||
List<IndexedAudioSourcePlayer> get sequence =>
|
||||
List.generate(count, (i) => audioSourcePlayer)
|
||||
.expand((p) => p.sequence)
|
||||
.toList();
|
||||
|
||||
@override
|
||||
List<int> get shuffleOrder {
|
||||
final order = <int>[];
|
||||
var offset = order.length;
|
||||
for (var i = 0; i < count; i++) {
|
||||
final childShuffleOrder = audioSourcePlayer.shuffleOrder;
|
||||
order.addAll(childShuffleOrder.map((i) => i + offset).toList());
|
||||
offset += childShuffleOrder.length;
|
||||
}
|
||||
return order;
|
||||
}
|
||||
|
||||
@override
|
||||
int shuffle(int treeIndex, int currentIndex) {
|
||||
for (var i = 0; i < count; i++) {
|
||||
treeIndex = audioSourcePlayer.shuffle(treeIndex, currentIndex);
|
||||
}
|
||||
return treeIndex;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue