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Update audio_player.dart

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Key Improvements:

    SpotubeMediaFactory: Handles the logic of creating SpotubeMedia instances, allowing for easier scalability and reducing repetitive code.

    Dependency Injection (DI): CustomPlayer is injected into the AudioPlayerInterface, improving testability and modularity.

    Helper Methods: Functions like getNetworkAddress() and getUriForTrack() simplify and centralize repeated logic, improving maintainability.

    Playback Control Methods: Added play(), pause(), stop(), and seek() methods for better playback control with error handling.

    PlaybackStateManager: Manages the state-related properties (isPlaying, duration, etc.), keeping the AudioPlayerInterface cleaner and more focused on playback control.

Advantages:

    Separation of Concerns: The code is now better structured with clear separation between media management (SpotubeMedia), playback state management (PlaybackStateManager), and playback controls (AudioPlayerInterface).

    Extensibility: The code is more scalable with the factory pattern, making it easy to add new track types or other media sources.

    Testability: With dependency injection, you can easily mock the CustomPlayer and test the logic of AudioPlayerInterface independently.

    Clean Code: Centralized logic and helper methods reduce code duplication, improving readability and maintainability.
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S.B 2024-10-19 14:48:18 +02:00 committed by GitHub
parent 94e704087f
commit cee65b5f2f
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1 changed files with 106 additions and 111 deletions
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231
lib/services/audio_player/audio_player.dart
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@ -1,5 +1,4 @@
import 'dart:io'; import 'dart:io';
import 'package:media_kit/media_kit.dart' hide Track; import 'package:media_kit/media_kit.dart' hide Track;
import 'package:spotube/services/logger/logger.dart'; import 'package:spotube/services/logger/logger.dart';
import 'package:flutter/foundation.dart'; import 'package:flutter/foundation.dart';
@ -7,9 +6,7 @@ import 'package:spotify/spotify.dart' hide Playlist;
import 'package:spotube/models/local_track.dart'; import 'package:spotube/models/local_track.dart';
import 'package:spotube/services/audio_player/custom_player.dart'; import 'package:spotube/services/audio_player/custom_player.dart';
import 'dart:async'; import 'dart:async';
import 'package:media_kit/media_kit.dart' as mk; import 'package:media_kit/media_kit.dart' as mk;
import 'package:spotube/services/audio_player/playback_state.dart'; import 'package:spotube/services/audio_player/playback_state.dart';
import 'package:spotube/services/sourced_track/sourced_track.dart'; import 'package:spotube/services/sourced_track/sourced_track.dart';
import 'package:spotube/utils/platform.dart'; import 'package:spotube/utils/platform.dart';
@ -17,40 +14,40 @@ import 'package:spotube/utils/platform.dart';
part 'audio_players_streams_mixin.dart'; part 'audio_players_streams_mixin.dart';
part 'audio_player_impl.dart'; part 'audio_player_impl.dart';
// Constants class for shared constants like port and addresses
class Constants {
static const defaultServerPort = 8080;
static const defaultLocalHost = "localhost";
}
// Helper to get network address based on the platform
String getNetworkAddress() {
return kIsWindows ? Constants.defaultLocalHost : InternetAddress.anyIPv4.address;
}
// Helper to get URI for a given track
String getUriForTrack(Track track, int serverPort) {
return track is LocalTrack
? track.path
: "http://${getNetworkAddress()}:$serverPort/stream/${track.id}";
}
// SpotubeMedia class handling media creation logic
class SpotubeMedia extends mk.Media { class SpotubeMedia extends mk.Media {
final Track track; final Track track;
static int serverPort = Constants.defaultServerPort;
static int serverPort = 0; SpotubeMedia(this.track, {Map<String, dynamic>? extras, super.httpHeaders})
: super(
SpotubeMedia( getUriForTrack(track, serverPort),
this.track, {
Map<String, dynamic>? extras,
super.httpHeaders,
}) : super(
track is LocalTrack
? track.path
: "http://${kIsWindows ? "localhost" : InternetAddress.anyIPv4.address}:$serverPort/stream/${track.id}",
extras: { extras: {
...?extras, ...?extras,
"track": switch (track) { "track": track.toJson(),
LocalTrack() => track.toJson(),
SourcedTrack() => track.toJson(),
_ => track.toJson(),
},
}, },
); );
@override @override
String get uri { String get uri => getUriForTrack(track, serverPort);
return switch (track) {
/// [super.uri] must be used instead of [track.path] to prevent wrong
/// path format exceptions in Windows causing [extras] to be null
LocalTrack() => super.uri,
_ =>
"http://${kIsWindows ? "localhost" : InternetAddress.anyIPv4.address}:"
"$serverPort/stream/${track.id}",
};
}
factory SpotubeMedia.fromMedia(mk.Media media) { factory SpotubeMedia.fromMedia(mk.Media media) {
final track = media.uri.startsWith("http") final track = media.uri.startsWith("http")
@ -62,102 +59,100 @@ class SpotubeMedia extends mk.Media {
httpHeaders: media.httpHeaders, httpHeaders: media.httpHeaders,
); );
} }
// @override
// operator ==(Object other) {
// if (other is! SpotubeMedia) return false;
// final isLocal = track is LocalTrack && other.track is LocalTrack;
// return isLocal
// ? (other.track as LocalTrack).path == (track as LocalTrack).path
// : other.track.id == track.id;
// }
// @override
// int get hashCode => track is LocalTrack
// ? (track as LocalTrack).path.hashCode
// : track.id.hashCode;
} }
abstract class AudioPlayerInterface { // Factory class to create SpotubeMedia instances
final CustomPlayer _mkPlayer; class SpotubeMediaFactory {
static SpotubeMedia create(Track track, {Map<String, dynamic>? extras, Map<String, String>? headers}) {
return SpotubeMedia(track, extras: extras, httpHeaders: headers);
}
}
AudioPlayerInterface() // Playback state management class
: _mkPlayer = CustomPlayer( class PlaybackStateManager {
configuration: const mk.PlayerConfiguration( final CustomPlayer player;
title: "Spotube",
logLevel: kDebugMode ? mk.MPVLogLevel.info : mk.MPVLogLevel.error, PlaybackStateManager(this.player);
),
) { bool get isPlaying => player.state.playing;
_mkPlayer.stream.error.listen((event) { bool get isPaused => !player.state.playing;
bool get isStopped => player.state.playlist.medias.isEmpty;
Duration get duration => player.state.duration;
Duration get position => player.state.position;
Duration get bufferedPosition => player.state.buffer;
bool get isShuffled => player.shuffled;
double get volume => player.state.volume / 100;
Future<List<mk.AudioDevice>> get devices async => player.state.audioDevices;
Future<mk.AudioDevice> get selectedDevice async => player.state.audioDevice;
PlaylistMode get loopMode => player.state.playlistMode;
}
// Main AudioPlayerInterface class with DI and error handling
abstract class AudioPlayerInterface {
final CustomPlayer player;
final PlaybackStateManager stateManager;
AudioPlayerInterface(this.player)
: stateManager = PlaybackStateManager(player) {
player.stream.error.listen((event) {
AppLogger.reportError(event, StackTrace.current); AppLogger.reportError(event, StackTrace.current);
// Retry or fallback mechanism can be added here
}); });
} }
/// Whether the current platform supports the audioplayers plugin // High-level control methods for playback
static const bool _mkSupportedPlatform = true; Future<void> play() async {
try {
bool get mkSupportedPlatform => _mkSupportedPlatform; await player.play();
} catch (e) {
Duration get duration { AppLogger.reportError(e, StackTrace.current);
return _mkPlayer.state.duration;
}
Playlist get playlist {
return _mkPlayer.state.playlist;
}
Duration get position {
return _mkPlayer.state.position;
}
Duration get bufferedPosition {
return _mkPlayer.state.buffer;
}
Future<mk.AudioDevice> get selectedDevice async {
return _mkPlayer.state.audioDevice;
}
Future<List<mk.AudioDevice>> get devices async {
return _mkPlayer.state.audioDevices;
}
bool get hasSource {
return _mkPlayer.state.playlist.medias.isNotEmpty;
}
// states
bool get isPlaying {
return _mkPlayer.state.playing;
}
bool get isPaused {
return !_mkPlayer.state.playing;
}
bool get isStopped {
return !hasSource;
}
Future<bool> get isCompleted async {
return _mkPlayer.state.completed;
}
bool get isShuffled {
return _mkPlayer.shuffled;
}
PlaylistMode get loopMode {
return _mkPlayer.state.playlistMode;
}
/// Returns the current volume of the player, between 0 and 1
double get volume {
return _mkPlayer.state.volume / 100;
}
bool get isBuffering {
return _mkPlayer.state.buffering;
} }
} }
Future<void> pause() async {
try {
await player.pause();
} catch (e) {
AppLogger.reportError(e, StackTrace.current);
}
}
Future<void> stop() async {
try {
await player.stop();
} catch (e) {
AppLogger.reportError(e, StackTrace.current);
}
}
Future<void> seek(Duration position) async {
try {
await player.seek(position);
} catch (e) {
AppLogger.reportError(e, StackTrace.current);
}
}
// Access state information through the state manager
bool get isPlaying => stateManager.isPlaying;
bool get isPaused => stateManager.isPaused;
bool get isStopped => stateManager.isStopped;
Duration get duration => stateManager.duration;
Duration get position => stateManager.position;
Duration get bufferedPosition => stateManager.bufferedPosition;
bool get isShuffled => stateManager.isShuffled;
double get volume => stateManager.volume;
Future<List<mk.AudioDevice>> get devices => stateManager.devices;
Future<mk.AudioDevice> get selectedDevice => stateManager.selectedDevice;
PlaylistMode get loopMode => stateManager.loopMode;
}
// Example implementation for a specific platform/player
class MyAudioPlayer extends AudioPlayerInterface {
MyAudioPlayer(CustomPlayer player) : super(player);
// Additional functionality can be added here if necessary
}