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Add ConcatenatingMediaSource version that fully combines windows.

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The published Timeline contains one window only with all periods of
the child sources.

Issue: #4868
PiperOrigin-RevId: 358150276
This commit is contained in:
tonihei 2021-02-18 12:33:19 +00:00 committed by kim-vde
parent 7b119beffb
commit 1a12018dae
3 changed files with 32 additions and 7 deletions
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21
library/common/src/main/java/com/google/android/exoplayer2/Timeline.java
View File

@ -435,7 +435,13 @@ public abstract class Timeline {
*/
public long durationUs;
private long positionInWindowUs;
/**
* The position of the start of this period relative to the start of the window to which it
* belongs, in microseconds. May be negative if the start of the period is not within the
* window.
*/
public long positionInWindowUs;
private AdPlaybackState adPlaybackState;
/** Creates a new instance with no ad playback state. */
@ -922,13 +928,14 @@ public abstract class Timeline {
}
}
int periodIndex = window.firstPeriodIndex;
long periodPositionUs = window.getPositionInFirstPeriodUs() + windowPositionUs;
long periodDurationUs = getPeriod(periodIndex, period, /* setIds= */ true).getDurationUs();
while (periodDurationUs != C.TIME_UNSET && periodPositionUs >= periodDurationUs
&& periodIndex < window.lastPeriodIndex) {
periodPositionUs -= periodDurationUs;
periodDurationUs = getPeriod(++periodIndex, period, /* setIds= */ true).getDurationUs();
getPeriod(periodIndex, period);
while (periodIndex < window.lastPeriodIndex
&& period.positionInWindowUs != windowPositionUs
&& getPeriod(periodIndex + 1, period).positionInWindowUs <= windowPositionUs) {
periodIndex++;
}
getPeriod(periodIndex, period, /* setIds= */ true);
long periodPositionUs = windowPositionUs - period.positionInWindowUs;
return Pair.create(Assertions.checkNotNull(period.uid), periodPositionUs);
}

8
library/common/src/main/java/com/google/android/exoplayer2/source/MediaPeriodId.java
View File

@ -152,6 +152,14 @@ public class MediaPeriodId {
newPeriodUid, adGroupIndex, adIndexInAdGroup, windowSequenceNumber, nextAdGroupIndex);
}
/** Returns a copy of this period identifier with a new {@code windowSequenceNumber}. */
public MediaPeriodId copyWithWindowSequenceNumber(long windowSequenceNumber) {
return this.windowSequenceNumber == windowSequenceNumber
? this
: new MediaPeriodId(
periodUid, adGroupIndex, adIndexInAdGroup, windowSequenceNumber, nextAdGroupIndex);
}
/** Returns whether this period identifier identifies an ad in an ad group in a period. */
public boolean isAd() {
return adGroupIndex != C.INDEX_UNSET;

10
library/core/src/main/java/com/google/android/exoplayer2/source/MediaSource.java
View File

@ -104,9 +104,19 @@ public interface MediaSource {
}
/** See {@link com.google.android.exoplayer2.source.MediaPeriodId#copyWithPeriodUid(Object)}. */
@Override
public MediaPeriodId copyWithPeriodUid(Object newPeriodUid) {
return new MediaPeriodId(super.copyWithPeriodUid(newPeriodUid));
}
/**
* See {@link
* com.google.android.exoplayer2.source.MediaPeriodId#copyWithWindowSequenceNumber(long)}.
*/
@Override
public MediaPeriodId copyWithWindowSequenceNumber(long windowSequenceNumber) {
return new MediaPeriodId(super.copyWithWindowSequenceNumber(windowSequenceNumber));
}
}
/**