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Generalize selectedVariantIndices in preparation for non-main adaptation

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After this change, multiple HlsSampleStreamWrappers may contain an apdaptive
track group.

PiperOrigin-RevId: 232507292
This commit is contained in:
aquilescanta 2019-02-05 18:04:30 +00:00 committed by Oliver Woodman
parent 6b81d9e7a4
commit fc2a99a688
1 changed files with 23 additions and 17 deletions
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40
library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsMediaPeriod.java
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@ -69,7 +69,8 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
private TrackGroupArray trackGroups;
private HlsSampleStreamWrapper[] sampleStreamWrappers;
private HlsSampleStreamWrapper[] enabledSampleStreamWrappers;
private int[] selectedVariantIndices;
// Maps sample stream wrappers to variant/rendition index by matching array positions.
private int[][] manifestUrlsIndicesPerWrapper;
private SequenceableLoader compositeSequenceableLoader;
private boolean notifiedReadingStarted;
@ -114,7 +115,7 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
timestampAdjusterProvider = new TimestampAdjusterProvider();
sampleStreamWrappers = new HlsSampleStreamWrapper[0];
enabledSampleStreamWrappers = new HlsSampleStreamWrapper[0];
selectedVariantIndices = new int[0];
manifestUrlsIndicesPerWrapper = new int[0][];
eventDispatcher.mediaPeriodCreated();
}
@ -156,11 +157,14 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
TrackGroupArray mainWrapperTrackGroups;
int mainWrapperPrimaryGroupIndex;
int[] mainWrapperVariantIndices;
if (hasVariants) {
HlsSampleStreamWrapper mainWrapper = sampleStreamWrappers[0];
mainWrapperVariantIndices = manifestUrlsIndicesPerWrapper[0];
mainWrapperTrackGroups = mainWrapper.getTrackGroups();
mainWrapperPrimaryGroupIndex = mainWrapper.getPrimaryTrackGroupIndex();
} else {
mainWrapperVariantIndices = new int[0];
mainWrapperTrackGroups = TrackGroupArray.EMPTY;
mainWrapperPrimaryGroupIndex = 0;
}
@ -176,7 +180,7 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
// Primary group in main wrapper.
hasPrimaryTrackGroupSelection = true;
for (int i = 0; i < trackSelection.length(); i++) {
int variantIndex = selectedVariantIndices[trackSelection.getIndexInTrackGroup(i)];
int variantIndex = mainWrapperVariantIndices[trackSelection.getIndexInTrackGroup(i)];
streamKeys.add(new StreamKey(HlsMasterPlaylist.GROUP_INDEX_VARIANT, variantIndex));
}
} else {
@ -188,13 +192,11 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
for (int i = audioWrapperOffset; i < sampleStreamWrappers.length; i++) {
TrackGroupArray wrapperTrackGroups = sampleStreamWrappers[i].getTrackGroups();
if (wrapperTrackGroups.indexOf(trackSelectionGroup) != C.INDEX_UNSET) {
if (i < subtitleWrapperOffset) {
streamKeys.add(
new StreamKey(HlsMasterPlaylist.GROUP_INDEX_AUDIO, i - audioWrapperOffset));
} else {
streamKeys.add(
new StreamKey(HlsMasterPlaylist.GROUP_INDEX_SUBTITLE, i - subtitleWrapperOffset));
}
int groupIndexType =
i < subtitleWrapperOffset
? HlsMasterPlaylist.GROUP_INDEX_AUDIO
: HlsMasterPlaylist.GROUP_INDEX_SUBTITLE;
streamKeys.add(new StreamKey(groupIndexType, manifestUrlsIndicesPerWrapper[i][0]));
break;
}
}
@ -203,13 +205,14 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
if (needsPrimaryTrackGroupSelection && !hasPrimaryTrackGroupSelection) {
// A track selection includes a variant-embedded track, but no variant is added yet. We use
// the valid variant with the lowest bitrate to reduce overhead.
int lowestBitrateIndex = selectedVariantIndices[0];
int lowestBitrate = masterPlaylist.variants.get(selectedVariantIndices[0]).format.bitrate;
for (int i = 1; i < selectedVariantIndices.length; i++) {
int variantBitrate = masterPlaylist.variants.get(selectedVariantIndices[i]).format.bitrate;
int lowestBitrateIndex = mainWrapperVariantIndices[0];
int lowestBitrate = masterPlaylist.variants.get(mainWrapperVariantIndices[0]).format.bitrate;
for (int i = 1; i < mainWrapperVariantIndices.length; i++) {
int variantBitrate =
masterPlaylist.variants.get(mainWrapperVariantIndices[i]).format.bitrate;
if (variantBitrate < lowestBitrate) {
lowestBitrate = variantBitrate;
lowestBitrateIndex = selectedVariantIndices[i];
lowestBitrateIndex = mainWrapperVariantIndices[i];
}
}
streamKeys.add(new StreamKey(HlsMasterPlaylist.GROUP_INDEX_VARIANT, lowestBitrateIndex));
@ -423,6 +426,7 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
int wrapperCount = (hasVariants ? 1 : 0) + audioRenditions.size() + subtitleRenditions.size();
sampleStreamWrappers = new HlsSampleStreamWrapper[wrapperCount];
manifestUrlsIndicesPerWrapper = new int[wrapperCount][];
pendingPrepareCount = wrapperCount;
int currentWrapperIndex = 0;
@ -443,6 +447,7 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
null,
Collections.emptyList(),
positionUs);
manifestUrlsIndicesPerWrapper[currentWrapperIndex] = new int[] {i};
sampleStreamWrappers[currentWrapperIndex++] = sampleStreamWrapper;
Format renditionFormat = audioRendition.format;
if (allowChunklessPreparation && renditionFormat.codecs != null) {
@ -457,6 +462,7 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
HlsSampleStreamWrapper sampleStreamWrapper =
buildSampleStreamWrapper(
C.TRACK_TYPE_TEXT, new HlsUrl[] {url}, null, Collections.emptyList(), positionUs);
manifestUrlsIndicesPerWrapper[currentWrapperIndex] = new int[] {i};
sampleStreamWrappers[currentWrapperIndex++] = sampleStreamWrapper;
sampleStreamWrapper.prepareWithMasterPlaylistInfo(
new TrackGroupArray(new TrackGroup(url.format)), 0, TrackGroupArray.EMPTY);
@ -530,13 +536,13 @@ public final class HlsMediaPeriod implements MediaPeriod, HlsSampleStreamWrapper
selectedVariantsCount = variantTypes.length - audioVariantCount;
}
HlsUrl[] selectedVariants = new HlsUrl[selectedVariantsCount];
selectedVariantIndices = new int[selectedVariantsCount];
manifestUrlsIndicesPerWrapper[0] = new int[selectedVariantsCount];
int outIndex = 0;
for (int i = 0; i < masterPlaylist.variants.size(); i++) {
if ((!useVideoVariantsOnly || variantTypes[i] == C.TRACK_TYPE_VIDEO)
&& (!useNonAudioVariantsOnly || variantTypes[i] != C.TRACK_TYPE_AUDIO)) {
selectedVariants[outIndex] = masterPlaylist.variants.get(i);
selectedVariantIndices[outIndex++] = i;
manifestUrlsIndicesPerWrapper[0][outIndex++] = i;
}
}
String codecs = selectedVariants[0].format.codecs;