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Double the buffer duration for AC3

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-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=219765107
This commit is contained in:
andrewlewis 2018-11-02 01:36:41 -07:00 committed by Oliver Woodman
parent 76688589d2
commit 3b1d0e270b
1 changed files with 6 additions and 0 deletions
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6
library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java
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@ -172,6 +172,9 @@ public final class DefaultAudioSink implements AudioSink {
*/ */
private static final int BUFFER_MULTIPLICATION_FACTOR = 4; private static final int BUFFER_MULTIPLICATION_FACTOR = 4;
/** To avoid underruns on some devices (e.g., Broadcom 7271), scale up the AC3 buffer duration. */
private static final int AC3_BUFFER_MULTIPLICATION_FACTOR = 2;
/** /**
* @see AudioTrack#ERROR_BAD_VALUE * @see AudioTrack#ERROR_BAD_VALUE
*/ */
@ -483,6 +486,9 @@ public final class DefaultAudioSink implements AudioSink {
return Util.constrainValue(multipliedBufferSize, minAppBufferSize, maxAppBufferSize); return Util.constrainValue(multipliedBufferSize, minAppBufferSize, maxAppBufferSize);
} else { } else {
int rate = getMaximumEncodedRateBytesPerSecond(outputEncoding); int rate = getMaximumEncodedRateBytesPerSecond(outputEncoding);
if (outputEncoding == C.ENCODING_AC3) {
rate *= AC3_BUFFER_MULTIPLICATION_FACTOR;
}
return (int) (PASSTHROUGH_BUFFER_DURATION_US * rate / C.MICROS_PER_SECOND); return (int) (PASSTHROUGH_BUFFER_DURATION_US * rate / C.MICROS_PER_SECOND);
} }
} }