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#90 video: switch between AudioTrack & SoundTouch depending on selected speed

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This commit is contained in:
Thibault Deckers 2021-10-21 10:01:11 +09:00
parent 148b8b1822
commit 4f87ac6a88
1 changed files with 18 additions and 2 deletions
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20
lib/widgets/viewer/video/fijkplayer.dart
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@ -32,6 +32,7 @@ class IjkPlayerAvesVideoController extends AvesVideoController {
final double minSpeed = .5;
// ijkplayer configures `AudioTrack` buffer for a maximum speed of 2
// but `SoundTouch` can go higher
@override
final double maxSpeed = 2;
@ -89,6 +90,13 @@ class IjkPlayerAvesVideoController extends AvesVideoController {
}
Future<void> _init({int startMillis = 0}) async {
if (isReady) {
_stopListening();
await _instance.release();
_instance = FijkPlayer();
_startListening();
}
sarNotifier.value = 1;
_applyOptions(startMillis);
@ -177,7 +185,7 @@ class IjkPlayerAvesVideoController extends AvesVideoController {
// When `SoundTouch` is enabled:
// - slowed down videos have a weird wobbly audio
// - we can set speeds higher than the `AudioTrack` limit of 2
options.setPlayerOption('soundtouch', 0);
options.setPlayerOption('soundtouch', _needSoundTouch(speed) ? 1 : 0);
// `subtitle`: decode subtitle stream
// default: 0, in [0, 1]
@ -323,10 +331,18 @@ class IjkPlayerAvesVideoController extends AvesVideoController {
@override
set speed(double speed) {
if (speed <= 0 || _speed == speed) return;
final optionChange = _needSoundTouch(speed) != _needSoundTouch(_speed);
_speed = speed;
_applySpeed();
if (optionChange) {
_init(startMillis: currentPosition);
} else {
_applySpeed();
}
}
bool _needSoundTouch(double speed) => speed > 1;
// TODO TLAD [video] bug: setting speed fails when there is no audio stream or audio is disabled
void _applySpeed() => _instance.setSpeed(speed);