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Fix audio/video desync caused by floating point cumulative errors #3837

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Merged
TobiGr merged 1 commit into from
Jul 2, 2020
Merged

Fix audio/video desync caused by floating point cumulative errors #3837

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28 changes: 19 additions & 9 deletions app/src/main/java/org/schabi/newpipe/player/BasePlayer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -331,13 +331,12 @@ private PlaybackParameters retrievePlaybackParametersFromPreferences() {
final SharedPreferences preferences =
PreferenceManager.getDefaultSharedPreferences(context);

final float speed = preferences
.getFloat(context.getString(R.string.playback_speed_key), getPlaybackSpeed());
final float pitch = preferences.getFloat(context.getString(R.string.playback_pitch_key),
getPlaybackPitch());
final boolean skipSilence = preferences
.getBoolean(context.getString(R.string.playback_skip_silence_key),
getPlaybackSkipSilence());
final float speed = preferences.getFloat(
context.getString(R.string.playback_speed_key), getPlaybackSpeed());
final float pitch = preferences.getFloat(
context.getString(R.string.playback_pitch_key), getPlaybackPitch());
final boolean skipSilence = preferences.getBoolean(
context.getString(R.string.playback_skip_silence_key), getPlaybackSkipSilence());
return new PlaybackParameters(speed, pitch, skipSilence);
}

Expand Down Expand Up @@ -1471,10 +1470,21 @@ public PlaybackParameters getPlaybackParameters() {
return parameters == null ? PlaybackParameters.DEFAULT : parameters;
}

/**
* Sets the playback parameters of the player, and also saves them to shared preferences.
* Speed and pitch are rounded up to 2 decimal places before being used or saved.
* @param speed the playback speed, will be rounded to up to 2 decimal places
* @param pitch the playback pitch, will be rounded to up to 2 decimal places
* @param skipSilence skip silence during playback
*/
public void setPlaybackParameters(final float speed, final float pitch,
final boolean skipSilence) {
savePlaybackParametersToPreferences(speed, pitch, skipSilence);
simpleExoPlayer.setPlaybackParameters(new PlaybackParameters(speed, pitch, skipSilence));
final float roundedSpeed = Math.round(speed * 100.0f) / 100.0f;
final float roundedPitch = Math.round(pitch * 100.0f) / 100.0f;

savePlaybackParametersToPreferences(roundedSpeed, roundedPitch, skipSilence);
simpleExoPlayer.setPlaybackParameters(
new PlaybackParameters(roundedSpeed, roundedPitch, skipSilence));
}

private void savePlaybackParametersToPreferences(final float speed, final float pitch,
Expand Down