loliball/media3
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Remove use of mod operator from SampleMetadataQueue

Browse Source 
It's no more complicated to avoid it, and according to the
Art team it should be faster without.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=159816746
This commit is contained in:
olly 2017-06-22 05:49:09 -07:00 committed by Oliver Woodman
parent 950c2159b0
commit 499f9370a2
1 changed files with 37 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
library/core/src/main/java/com/google/android/exoplayer2/source/SampleMetadataQueue.java
View File

@ -114,7 +114,7 @@ import com.google.android.exoplayer2.util.Util;
if (length == 0) {
return 0;
} else {
int relativeLastWriteIndex = (relativeStartIndex + length - 1) % capacity;
int relativeLastWriteIndex = getRelativeIndex(length - 1);
return offsets[relativeLastWriteIndex] + sizes[relativeLastWriteIndex];
}
}
@ -139,7 +139,7 @@ import com.google.android.exoplayer2.util.Util;
* @return The source id.
*/
public int peekSourceId() {
int relativeReadIndex = (relativeStartIndex + readPosition) % capacity;
int relativeReadIndex = getRelativeIndex(readPosition);
return hasNextSample() ? sourceIds[relativeReadIndex] : upstreamSourceId;
}
@ -217,7 +217,7 @@ import com.google.android.exoplayer2.util.Util;
}
}
int relativeReadIndex = (relativeStartIndex + readPosition) % capacity;
int relativeReadIndex = getRelativeIndex(readPosition);
if (formatRequired || formats[relativeReadIndex] != downstreamFormat) {
formatHolder.format = formats[relativeReadIndex];
return C.RESULT_FORMAT_READ;
@ -251,7 +251,7 @@ import com.google.android.exoplayer2.util.Util;
*/
public synchronized boolean advanceTo(long timeUs, boolean toKeyframe,
boolean allowTimeBeyondBuffer) {
int relativeReadIndex = (relativeStartIndex + readPosition) % capacity;
int relativeReadIndex = getRelativeIndex(readPosition);
if (!hasNextSample() || timeUs < timesUs[relativeReadIndex]
|| (timeUs > largestQueuedTimestampUs && !allowTimeBeyondBuffer)) {
return false;
@ -352,7 +352,7 @@ import com.google.android.exoplayer2.util.Util;
Assertions.checkState(!upstreamFormatRequired);
commitSampleTimestamp(timeUs);
int relativeEndIndex = (relativeStartIndex + length) % capacity;
int relativeEndIndex = getRelativeIndex(length);
timesUs[relativeEndIndex] = timeUs;
offsets[relativeEndIndex] = offset;
sizes[relativeEndIndex] = size;
@ -422,9 +422,13 @@ import com.google.android.exoplayer2.util.Util;
return false;
}
int retainCount = length;
while (retainCount > readPosition
&& timesUs[(relativeStartIndex + retainCount - 1) % capacity] >= timeUs) {
int relativeSampleIndex = getRelativeIndex(length - 1);
while (retainCount > readPosition && timesUs[relativeSampleIndex] >= timeUs) {
retainCount--;
relativeSampleIndex--;
if (relativeSampleIndex == -1) {
relativeSampleIndex = capacity - 1;
}
}
discardUpstreamSamples(absoluteStartIndex + retainCount);
return true;
@ -454,7 +458,10 @@ import com.google.android.exoplayer2.util.Util;
// We've found a suitable sample.
sampleCountToTarget = i;
}
searchIndex = (searchIndex + 1) % capacity;
searchIndex++;
if (searchIndex == capacity) {
searchIndex = 0;
}
}
return sampleCountToTarget;
}
@ -493,18 +500,35 @@ import com.google.android.exoplayer2.util.Util;
* the keyframe itself, and of subsequent frames.
*
* @param length The length of the range being searched.
* @return The largest timestamp, or {@link Long#MIN_VALUE} if {@code length <= 0}.
* @return The largest timestamp, or {@link Long#MIN_VALUE} if {@code length == 0}.
*/
private long getLargestTimestamp(int length) {
if (length == 0) {
return Long.MIN_VALUE;
}
long largestTimestampUs = Long.MIN_VALUE;
for (int i = length - 1; i >= 0; i--) {
int sampleIndex = (relativeStartIndex + i) % capacity;
largestTimestampUs = Math.max(largestTimestampUs, timesUs[sampleIndex]);
if ((flags[sampleIndex] & C.BUFFER_FLAG_KEY_FRAME) != 0) {
int relativeSampleIndex = getRelativeIndex(length - 1);
for (int i = 0; i < length; i++) {
largestTimestampUs = Math.max(largestTimestampUs, timesUs[relativeSampleIndex]);
if ((flags[relativeSampleIndex] & C.BUFFER_FLAG_KEY_FRAME) != 0) {
break;
}
relativeSampleIndex--;
if (relativeSampleIndex == -1) {
relativeSampleIndex = capacity - 1;
}
}
return largestTimestampUs;
}
/**
* Returns the relative index for a given offset from the start of the queue.
*
* @param offset The offset, which must be in the range [0, length].
*/
private int getRelativeIndex(int offset) {
int relativeIndex = relativeStartIndex + offset;
return relativeIndex < capacity ? relativeIndex : relativeIndex - capacity;
}
}