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common: Move playback helper methods to base class

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This commit is contained in:
Elias Projahn 2020-07-18 12:59:27 +02:00
parent 4bdd1873c4
commit 23d233becc
2 changed files with 41 additions and 41 deletions
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38
common/lib/src/playback.dart
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@ -45,7 +45,7 @@ abstract class MusicusPlayback {
final normalizedPosition = BehaviorSubject.seeded(0.0);
/// Initialize the player.
///
///
/// This will be called after the database was initialized.
Future<void> setup();
@ -93,4 +93,38 @@ abstract class MusicusPlayback {
duration.close();
normalizedPosition.close();
}
}
/// Update [position] and [normalizedPosition].
///
/// Requires [duration] to be up to date
void updatePosition(int positionMs) {
position.add(Duration(milliseconds: positionMs));
_setNormalizedPosition(positionMs / duration.value.inMilliseconds);
}
/// Update [position], [duration] and [normalizedPosition].
void updateDuration(int positionMs, int durationMs) {
position.add(Duration(milliseconds: positionMs));
duration.add(Duration(milliseconds: durationMs));
_setNormalizedPosition(positionMs / durationMs);
}
/// Update [normalizedPosition] ensuring its value is between 0.0 and 1.0.
void _setNormalizedPosition(double value) {
if (value <= 0.0) {
normalizedPosition.add(0.0);
} else if (value >= 1.0) {
normalizedPosition.add(1.0);
} else {
normalizedPosition.add(value);
}
}
/// Update [currentIndex] and [currentTrack].
///
/// Requires [playlist] to be up to date.
void updateCurrentTrack(int index) {
currentIndex.add(index);
currentTrack.add(playlist.value[index]);
}
}

44
mobile/lib/playback.dart
View file

@ -34,40 +34,6 @@ class Playback extends MusicusPlayback {
}
}
/// Update [position] and [normalizedPosition].
///
/// Requires [duration] to be up to date
void _updatePosition(int positionMs) {
position.add(Duration(milliseconds: positionMs));
_setNormalizedPosition(positionMs / duration.value.inMilliseconds);
}
/// Update [position], [duration] and [normalizedPosition].
void _updateDuration(int positionMs, int durationMs) {
position.add(Duration(milliseconds: positionMs));
duration.add(Duration(milliseconds: durationMs));
_setNormalizedPosition(positionMs / durationMs);
}
/// Update [normalizedPosition] ensuring its value is between 0.0 and 1.0.
void _setNormalizedPosition(double value) {
if (value <= 0.0) {
normalizedPosition.add(0.0);
} else if (value >= 1.0) {
normalizedPosition.add(1.0);
} else {
normalizedPosition.add(value);
}
}
/// Update [currentIndex] and [currentTrack].
///
/// Requires [playlist] to be up to date.
void _updateCurrentTrack(int index) {
currentIndex.add(index);
currentTrack.add(playlist.value[index]);
}
@override
Future<void> setup() async {
if (_playbackServiceStateSubscription != null) {
@ -93,14 +59,14 @@ class Playback extends MusicusPlayback {
if (msg is _StatusMessage) {
playing.add(msg.playing);
} else if (msg is _PositionMessage) {
_updatePosition(msg.positionMs);
updatePosition(msg.positionMs);
} else if (msg is _TrackMessage) {
_updateCurrentTrack(msg.currentTrack);
_updateDuration(msg.positionMs, msg.durationMs);
updateCurrentTrack(msg.currentTrack);
updateDuration(msg.positionMs, msg.durationMs);
} else if (msg is _PlaylistMessage) {
playlist.add(msg.playlist);
_updateCurrentTrack(msg.currentTrack);
_updateDuration(msg.positionMs, msg.durationMs);
updateCurrentTrack(msg.currentTrack);
updateDuration(msg.positionMs, msg.durationMs);
}
}
});