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Suppress noop format changes

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For self-initializing segments, DefaultTrackOutput receives
a null format and then the actual format. This broke the
deduplication logic in InfoQueue.format, since there were
two transitions: FormatX->Null and Null->FormatX. This CL
allows deduplication to succeed in this case.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129081583
This commit is contained in:
olly 2016-08-02 03:27:16 -07:00 committed by Oliver Woodman
parent 5345702ec5
commit 1bea48f249
1 changed files with 17 additions and 6 deletions
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23
library/src/main/java/com/google/android/exoplayer2/extractor/DefaultTrackOutput.java
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@ -449,8 +449,8 @@ public final class DefaultTrackOutput implements TrackOutput {
@Override
public void format(Format format) {
Format adjustedFormat = getAdjustedSampleFormat(format, sampleOffsetUs);
infoQueue.format(adjustedFormat);
if (upstreamFormatChangeListener != null) {
boolean formatChanged = infoQueue.format(adjustedFormat);
if (upstreamFormatChangeListener != null && formatChanged) {
upstreamFormatChangeListener.onUpstreamFormatChanged(adjustedFormat);
}
}
@ -608,6 +608,7 @@ public final class DefaultTrackOutput implements TrackOutput {
private long largestDequeuedTimestampUs;
private long largestQueuedTimestampUs;
private boolean upstreamFormatRequired;
private Format upstreamFormat;
private int upstreamSourceId;
@ -622,6 +623,7 @@ public final class DefaultTrackOutput implements TrackOutput {
formats = new Format[capacity];
largestDequeuedTimestampUs = Long.MIN_VALUE;
largestQueuedTimestampUs = Long.MIN_VALUE;
upstreamFormatRequired = true;
}
public void clearSampleData() {
@ -711,7 +713,7 @@ public final class DefaultTrackOutput implements TrackOutput {
* Returns the upstream {@link Format} in which samples are being queued.
*/
public synchronized Format getUpstreamFormat() {
return upstreamFormat;
return upstreamFormatRequired ? null : upstreamFormat;
}
/**
@ -826,15 +828,24 @@ public final class DefaultTrackOutput implements TrackOutput {
// Called by the loading thread.
public synchronized void format(Format format) {
// We suppress changes between equal formats so we can use referential equality in readData.
if (!Util.areEqual(format, upstreamFormat)) {
public synchronized boolean format(Format format) {
if (format == null) {
upstreamFormatRequired = true;
return false;
}
upstreamFormatRequired = false;
if (Util.areEqual(format, upstreamFormat)) {
// Suppress changes between equal formats so we can use referential equality in readData.
return false;
} else {
upstreamFormat = format;
return true;
}
}
public synchronized void commitSample(long timeUs, int sampleFlags, long offset, int size,
byte[] encryptionKey) {
Assertions.checkState(!upstreamFormatRequired);
commitSampleTimestamp(timeUs);
timesUs[relativeWriteIndex] = timeUs;
offsets[relativeWriteIndex] = offset;