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Avoid draining audio processors while reset

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If the DefaultAudioSink was reconfigured in a way that was compatible with the
previous configuration just after having been reset, we would try to drain audio
processors despite not having an AudioTrack. This could result in a
NullPointerException if speed adjustment was active.

Fix this behavior by only trying to drain audio processors if we actually have
an AudioTrack.

PiperOrigin-RevId: 235355466
This commit is contained in:
andrewlewis 2019-02-23 20:20:10 +00:00 committed by Oliver Woodman
parent e8077fb3f4
commit caeaa9574e
1 changed files with 11 additions and 8 deletions
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11
library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java
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@ -465,15 +465,18 @@ public final class DefaultAudioSink implements AudioSink {
processingEnabled,
canApplyPlaybackParameters,
availableAudioProcessors);
if (configuration == null || !pendingConfiguration.canReuseAudioTrack(configuration)) {
// We need a new AudioTrack before we can handle more input. We should first stop() the track
// (if we have one) and wait for audio to play out. Tracked by [Internal: b/33161961].
if (isInitialized()) {
if (!pendingConfiguration.canReuseAudioTrack(configuration)) {
// We need a new AudioTrack before we can handle more input. We should first stop() the
// track and wait for audio to play out (tracked by [Internal: b/33161961]), but for now we
// discard the audio track immediately.
flush();
} else if (flushAudioProcessors) {
// We don't need a new AudioTrack but audio processors need to be flushed.
// We don't need a new AudioTrack but audio processors need to be drained and flushed.
this.pendingConfiguration = pendingConfiguration;
return;
}
}
configuration = pendingConfiguration;
}