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Tweak offload disable Javadoc

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PiperOrigin-RevId: 326998407
This commit is contained in:
olly 2020-08-17 12:44:16 +01:00 committed by kim-vde
parent 10fa745fab
commit 02ed809a18
1 changed files with 17 additions and 18 deletions
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35
library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java
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@ -327,15 +327,7 @@ public final class DefaultAudioSink implements AudioSink {
private AuxEffectInfo auxEffectInfo;
private boolean tunneling;
private long lastFeedElapsedRealtimeMs;
/**
* Do not retrying offload if it just failed.
*
* <p>{@link AudioManager#isOffloadedPlaybackSupported(AudioFormat,
* android.media.AudioAttributes)} does not guaranty that offload is available (eg: using {@link
* android.media.AudioPlaybackCaptureConfiguration}) will disable offload. As a result only try
* once per track/seek to play in offload mode.
*/
private boolean disableOffloadAfterFailureUntilNextConfiguration;
private boolean offloadDisabledUntilNextConfiguration;
/**
* Creates a new default audio sink.
@ -466,7 +458,7 @@ public final class DefaultAudioSink implements AudioSink {
return SINK_FORMAT_SUPPORTED_WITH_TRANSCODING;
}
if (enableOffload
&& !disableOffloadAfterFailureUntilNextConfiguration
&& !offloadDisabledUntilNextConfiguration
&& isOffloadedPlaybackSupported(format, audioAttributes)) {
return SINK_FORMAT_SUPPORTED_DIRECTLY;
}
@ -575,8 +567,7 @@ public final class DefaultAudioSink implements AudioSink {
"Invalid output channel config (mode=" + outputMode + ") for: " + inputFormat);
}
disableOffloadAfterFailureUntilNextConfiguration = false;
offloadDisabledUntilNextConfiguration = false;
Configuration pendingConfiguration =
new Configuration(
inputFormat,
@ -836,9 +827,7 @@ public final class DefaultAudioSink implements AudioSink {
return Assertions.checkNotNull(configuration)
.buildAudioTrack(tunneling, audioAttributes, audioSessionId);
} catch (InitializationException e) {
if (configuration.outputModeIsOffload()) {
disableOffloadAfterFailureUntilNextConfiguration = true;
}
maybeDisableOffload();
throw e;
}
}
@ -929,8 +918,8 @@ public final class DefaultAudioSink implements AudioSink {
if (bytesWritten < 0) {
boolean isRecoverable = isAudioTrackDeadObject(bytesWritten);
if (isRecoverable && configuration.outputModeIsOffload()) {
disableOffloadAfterFailureUntilNextConfiguration = true;
if (isRecoverable) {
maybeDisableOffload();
}
throw new WriteException(bytesWritten);
}
@ -966,6 +955,16 @@ public final class DefaultAudioSink implements AudioSink {
}
}
private void maybeDisableOffload() {
if (!configuration.outputModeIsOffload()) {
return;
}
// Offload was requested, but may not be available. There are cases when this can occur even if
// AudioManager.isOffloadedPlaybackSupported returned true. For example, due to use of an
// AudioPlaybackCaptureConfiguration. Disable offload until the sink is next configured.
offloadDisabledUntilNextConfiguration = true;
}
private static boolean isAudioTrackDeadObject(int status) {
return Util.SDK_INT >= 24 && status == AudioTrack.ERROR_DEAD_OBJECT;
}
@ -1200,7 +1199,7 @@ public final class DefaultAudioSink implements AudioSink {
}
audioSessionId = C.AUDIO_SESSION_ID_UNSET;
playing = false;
disableOffloadAfterFailureUntilNextConfiguration = false;
offloadDisabledUntilNextConfiguration = false;
}
// Internal methods.