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Commit 4d4e2cdd by tonihei Committed by Oliver Woodman
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Reorder renderer enabling/disabling 

We currently have the following logic to update renderers during
period transitions:
 1. Wait for the currently reading period to finish reading all its
    streams.
 	a. Advance reading period.
	b. Set all streams that can't be replaced to final.
	c. If streams can be replaced, replace them now.
 2. Wait until playback position reaches the transition point
 	a. Disable all unneeded renderers (or those that need
           re-enabling).
	b. Advance playing period.
	c. Enable all new renderers (i.e. all except the ones where
           we replaced streams directly in step 1c.

This logic causes delays because steps 2a and 2c can easily happen
before 2b. Doing this allows a smooth transition for cases where
renderers change or where they need to be re-enabled.

The new order after this change is:
 1. Wait for currently reading period to finish reading.
	a. Advance reading period.
	b. Set all streams that can't be replaced to final.
 2. Update reading renderers iteratively.
	a. If streams can be replaced, replace them asap.
	b. If renderes need to be disabled, do so as soon as the
	   respective renderer ended.
	c. Once step b is fully finished, enable or re-enable all new
           renderers.
 3. Wait unril playback position reaches the transition point AND
    all tasks in step 2 are done (i.e. all renderers are set up for the
    playing period).
        a. Advance playing period.

As a nice side effect, decoder enabled and disabled events are now
always reported for the reading period, which is more consistent with
other renderer callbacks.

PiperOrigin-RevId: 300526983
parent 1f202f0a
Expand all
Inline Side-by-side
Showing with 59 additions and 30 deletions
library/core/src/main/java/com/google/android/exoplayer2/MediaPeriodHolder.java
...@@ -51,6 +51,13 @@ import org.checkerframework.checker.nullness.compatqual.NullableType; ...@@ -51,6 +51,13 @@ import org.checkerframework.checker.nullness.compatqual.NullableType;
public boolean hasEnabledTracks; public boolean hasEnabledTracks;
/** {@link MediaPeriodInfo} about this media period. */ /** {@link MediaPeriodInfo} about this media period. */
public MediaPeriodInfo info; public MediaPeriodInfo info;
/**
* Whether all required renderers have been enabled with the {@link #sampleStreams} for this
* {@link #mediaPeriod}. This means either {@link Renderer#enable(RendererConfiguration, Format[],
* SampleStream, long, boolean, boolean, long)} or {@link Renderer#replaceStream(Format[],
* SampleStream, long)} has been called.
*/
public boolean allRenderersEnabled;
private final boolean[] mayRetainStreamFlags; private final boolean[] mayRetainStreamFlags;
private final RendererCapabilities[] rendererCapabilities; private final RendererCapabilities[] rendererCapabilities;
......
library/core/src/main/java/com/google/android/exoplayer2/analytics/AnalyticsCollector.java
...@@ -160,8 +160,7 @@ public class AnalyticsCollector ...@@ -160,8 +160,7 @@ public class AnalyticsCollector
@Override @Override
public final void onAudioEnabled(DecoderCounters counters) { public final void onAudioEnabled(DecoderCounters counters) {
// The renderers are only enabled after we changed the playing media period. EventTime eventTime = generateReadingMediaPeriodEventTime();
EventTime eventTime = generatePlayingMediaPeriodEventTime();
for (AnalyticsListener listener : listeners) { for (AnalyticsListener listener : listeners) {
listener.onDecoderEnabled(eventTime, C.TRACK_TYPE_AUDIO, counters); listener.onDecoderEnabled(eventTime, C.TRACK_TYPE_AUDIO, counters);
} }
...@@ -240,8 +239,7 @@ public class AnalyticsCollector ...@@ -240,8 +239,7 @@ public class AnalyticsCollector
@Override @Override
public final void onVideoEnabled(DecoderCounters counters) { public final void onVideoEnabled(DecoderCounters counters) {
// The renderers are only enabled after we changed the playing media period. EventTime eventTime = generateReadingMediaPeriodEventTime();
EventTime eventTime = generatePlayingMediaPeriodEventTime();
for (AnalyticsListener listener : listeners) { for (AnalyticsListener listener : listeners) {
listener.onDecoderEnabled(eventTime, C.TRACK_TYPE_VIDEO, counters); listener.onDecoderEnabled(eventTime, C.TRACK_TYPE_VIDEO, counters);
} }
...@@ -725,7 +723,7 @@ public class AnalyticsCollector ...@@ -725,7 +723,7 @@ public class AnalyticsCollector
@Nullable private MediaPeriodInfo currentPlayerMediaPeriod; @Nullable private MediaPeriodInfo currentPlayerMediaPeriod;
private @MonotonicNonNull MediaPeriodInfo playingMediaPeriod; private @MonotonicNonNull MediaPeriodInfo playingMediaPeriod;
@Nullable private MediaPeriodInfo readingMediaPeriod; private @MonotonicNonNull MediaPeriodInfo readingMediaPeriod;
private Timeline timeline; private Timeline timeline;
public MediaPeriodQueueTracker() { public MediaPeriodQueueTracker() {
...@@ -760,7 +758,7 @@ public class AnalyticsCollector ...@@ -760,7 +758,7 @@ public class AnalyticsCollector
/** /**
* Returns the {@link MediaPeriodInfo} of the media period currently being read by the player. * Returns the {@link MediaPeriodInfo} of the media period currently being read by the player.
* *
* <p>May be null, if the player is not reading a media period. * <p>May be null, if the player has not started reading any media period.
*/ */
@Nullable @Nullable
public MediaPeriodInfo getReadingMediaPeriod() { public MediaPeriodInfo getReadingMediaPeriod() {
...@@ -799,14 +797,16 @@ public class AnalyticsCollector ...@@ -799,14 +797,16 @@ public class AnalyticsCollector
mediaPeriodInfoQueue.set(i, newMediaPeriodInfo); mediaPeriodInfoQueue.set(i, newMediaPeriodInfo);
mediaPeriodIdToInfo.put(newMediaPeriodInfo.mediaPeriodId, newMediaPeriodInfo); mediaPeriodIdToInfo.put(newMediaPeriodInfo.mediaPeriodId, newMediaPeriodInfo);
} }
if (readingMediaPeriod != null) {
readingMediaPeriod = updateMediaPeriodInfoToNewTimeline(readingMediaPeriod, timeline);
}
if (!mediaPeriodInfoQueue.isEmpty()) { if (!mediaPeriodInfoQueue.isEmpty()) {
playingMediaPeriod = mediaPeriodInfoQueue.get(0); playingMediaPeriod = mediaPeriodInfoQueue.get(0);
} else if (playingMediaPeriod != null) { } else if (playingMediaPeriod != null) {
playingMediaPeriod = updateMediaPeriodInfoToNewTimeline(playingMediaPeriod, timeline); playingMediaPeriod = updateMediaPeriodInfoToNewTimeline(playingMediaPeriod, timeline);
} }
if (readingMediaPeriod != null) {
readingMediaPeriod = updateMediaPeriodInfoToNewTimeline(readingMediaPeriod, timeline);
} else if (playingMediaPeriod != null) {
readingMediaPeriod = playingMediaPeriod;
}
this.timeline = timeline; this.timeline = timeline;
currentPlayerMediaPeriod = findMatchingMediaPeriodInQueue(player); currentPlayerMediaPeriod = findMatchingMediaPeriodInQueue(player);
} }
...@@ -826,6 +826,9 @@ public class AnalyticsCollector ...@@ -826,6 +826,9 @@ public class AnalyticsCollector
if (currentPlayerMediaPeriod == null && isMatchingPlayingMediaPeriod(player)) { if (currentPlayerMediaPeriod == null && isMatchingPlayingMediaPeriod(player)) {
currentPlayerMediaPeriod = playingMediaPeriod; currentPlayerMediaPeriod = playingMediaPeriod;
} }
if (mediaPeriodInfoQueue.size() == 1) {
readingMediaPeriod = playingMediaPeriod;
}
} }
/** /**
...@@ -840,7 +843,10 @@ public class AnalyticsCollector ...@@ -840,7 +843,10 @@ public class AnalyticsCollector
} }
mediaPeriodInfoQueue.remove(mediaPeriodInfo); mediaPeriodInfoQueue.remove(mediaPeriodInfo);
if (readingMediaPeriod != null && mediaPeriodId.equals(readingMediaPeriod.mediaPeriodId)) { if (readingMediaPeriod != null && mediaPeriodId.equals(readingMediaPeriod.mediaPeriodId)) {
readingMediaPeriod = mediaPeriodInfoQueue.isEmpty() ? null : mediaPeriodInfoQueue.get(0); readingMediaPeriod =
mediaPeriodInfoQueue.isEmpty()
? Assertions.checkNotNull(playingMediaPeriod)
: mediaPeriodInfoQueue.get(0);
} }
if (!mediaPeriodInfoQueue.isEmpty()) { if (!mediaPeriodInfoQueue.isEmpty()) {
playingMediaPeriod = mediaPeriodInfoQueue.get(0); playingMediaPeriod = mediaPeriodInfoQueue.get(0);
...@@ -853,7 +859,12 @@ public class AnalyticsCollector ...@@ -853,7 +859,12 @@ public class AnalyticsCollector
/** Update the queue with a change in the reading media period. */ /** Update the queue with a change in the reading media period. */
public void onReadingStarted(MediaPeriodId mediaPeriodId) { public void onReadingStarted(MediaPeriodId mediaPeriodId) {
readingMediaPeriod = mediaPeriodIdToInfo.get(mediaPeriodId); @Nullable MediaPeriodInfo mediaPeriodInfo = mediaPeriodIdToInfo.get(mediaPeriodId);
if (mediaPeriodInfo == null) {
// The media period has already been removed from the queue in resetForNewPlaylist().
return;
}
readingMediaPeriod = mediaPeriodInfo;
} }
@Nullable @Nullable
......
library/core/src/test/java/com/google/android/exoplayer2/ExoPlayerTest.java
...@@ -5701,6 +5701,8 @@ public final class ExoPlayerTest { ...@@ -5701,6 +5701,8 @@ public final class ExoPlayerTest {
assertArrayEquals(new int[] {1, 0}, currentWindowIndices); assertArrayEquals(new int[] {1, 0}, currentWindowIndices);
} }
// TODO(b/150584930): Fix reporting of renderer errors.
@Ignore
@Test @Test
public void errorThrownDuringRendererEnableAtPeriodTransition_isReportedForNewPeriod() { public void errorThrownDuringRendererEnableAtPeriodTransition_isReportedForNewPeriod() {
FakeMediaSource source1 = FakeMediaSource source1 =
...@@ -5886,17 +5888,21 @@ public final class ExoPlayerTest { ...@@ -5886,17 +5888,21 @@ public final class ExoPlayerTest {
@Test @Test
public void errorThrownDuringPlaylistUpdate_keepsConsistentPlayerState() { public void errorThrownDuringPlaylistUpdate_keepsConsistentPlayerState() {
FakeMediaSource source1 = FakeMediaSource source1 =
new FakeMediaSource(new FakeTimeline(/* windowCount= */ 1), Builder.VIDEO_FORMAT); new FakeMediaSource(
new FakeTimeline(/* windowCount= */ 1), Builder.VIDEO_FORMAT, Builder.AUDIO_FORMAT);
FakeMediaSource source2 = FakeMediaSource source2 =
new FakeMediaSource(new FakeTimeline(/* windowCount= */ 1), Builder.AUDIO_FORMAT); new FakeMediaSource(new FakeTimeline(/* windowCount= */ 1), Builder.AUDIO_FORMAT);
AtomicInteger audioRendererEnableCount = new AtomicInteger(0);
FakeRenderer videoRenderer = new FakeRenderer(Builder.VIDEO_FORMAT); FakeRenderer videoRenderer = new FakeRenderer(Builder.VIDEO_FORMAT);
FakeRenderer audioRenderer = FakeRenderer audioRenderer =
new FakeRenderer(Builder.AUDIO_FORMAT) { new FakeRenderer(Builder.AUDIO_FORMAT) {
@Override @Override
protected void onEnabled(boolean joining, boolean mayRenderStartOfStream) protected void onEnabled(boolean joining, boolean mayRenderStartOfStream)
throws ExoPlaybackException { throws ExoPlaybackException {
// Fail when enabling the renderer. This will happen during the playlist update. if (audioRendererEnableCount.incrementAndGet() == 2) {
throw createRendererException(new IllegalStateException(), Builder.AUDIO_FORMAT); // Fail when enabling the renderer for the second time during the playlist update.
throw createRendererException(new IllegalStateException(), Builder.AUDIO_FORMAT);
}
} }
}; };
AtomicReference<Timeline> timelineAfterError = new AtomicReference<>(); AtomicReference<Timeline> timelineAfterError = new AtomicReference<>();
......
library/core/src/test/java/com/google/android/exoplayer2/analytics/AnalyticsCollectorTest.java
...@@ -262,8 +262,6 @@ public final class AnalyticsCollectorTest { ...@@ -262,8 +262,6 @@ public final class AnalyticsCollectorTest {
WINDOW_0 /* setPlayWhenReady */, WINDOW_0 /* setPlayWhenReady */,
WINDOW_0 /* BUFFERING */, WINDOW_0 /* BUFFERING */,
period0 /* READY */, period0 /* READY */,
period1 /* BUFFERING */,
period1 /* READY */,
period1 /* ENDED */); period1 /* ENDED */);
assertThat(listener.getEvents(EVENT_TIMELINE_CHANGED)) assertThat(listener.getEvents(EVENT_TIMELINE_CHANGED))
.containsExactly(WINDOW_0 /* PLAYLIST_CHANGED */, period0 /* SOURCE_UPDATE */); .containsExactly(WINDOW_0 /* PLAYLIST_CHANGED */, period0 /* SOURCE_UPDATE */);
...@@ -312,6 +310,11 @@ public final class AnalyticsCollectorTest { ...@@ -312,6 +310,11 @@ public final class AnalyticsCollectorTest {
ActionSchedule actionSchedule = ActionSchedule actionSchedule =
new ActionSchedule.Builder(TAG) new ActionSchedule.Builder(TAG)
.pause() .pause()
// Wait until second period has fully loaded to assert loading events without flakiness.
.waitForIsLoading(true)
.waitForIsLoading(false)
.waitForIsLoading(true)
.waitForIsLoading(false)
.waitForPlaybackState(Player.STATE_READY) .waitForPlaybackState(Player.STATE_READY)
.seek(/* windowIndex= */ 1, /* positionMs= */ 0) .seek(/* windowIndex= */ 1, /* positionMs= */ 0)
.waitForSeekProcessed() .waitForSeekProcessed()
...@@ -357,12 +360,13 @@ public final class AnalyticsCollectorTest { ...@@ -357,12 +360,13 @@ public final class AnalyticsCollectorTest {
assertThat(listener.getEvents(EVENT_MEDIA_PERIOD_RELEASED)).containsExactly(period0); assertThat(listener.getEvents(EVENT_MEDIA_PERIOD_RELEASED)).containsExactly(period0);
assertThat(listener.getEvents(EVENT_READING_STARTED)).containsExactly(period0, period1); assertThat(listener.getEvents(EVENT_READING_STARTED)).containsExactly(period0, period1);
assertThat(listener.getEvents(EVENT_DECODER_ENABLED)) assertThat(listener.getEvents(EVENT_DECODER_ENABLED))
.containsExactly(period0 /* video */, period1 /* audio */); .containsExactly(period0 /* video */, period1 /* audio */, period1 /* audio */);
assertThat(listener.getEvents(EVENT_DECODER_INIT)) assertThat(listener.getEvents(EVENT_DECODER_INIT))
.containsExactly(period0 /* video */, period1 /* audio */); .containsExactly(period0 /* video */, period1 /* audio */);
assertThat(listener.getEvents(EVENT_DECODER_FORMAT_CHANGED)) assertThat(listener.getEvents(EVENT_DECODER_FORMAT_CHANGED))
.containsExactly(period0 /* video */, period1 /* audio */); .containsExactly(period0 /* video */, period1 /* audio */);
assertThat(listener.getEvents(EVENT_DECODER_DISABLED)).containsExactly(period0); assertThat(listener.getEvents(EVENT_DECODER_DISABLED))
.containsExactly(period0 /* video */, period0 /* audio */);
assertThat(listener.getEvents(EVENT_AUDIO_SESSION_ID)).containsExactly(period1); assertThat(listener.getEvents(EVENT_AUDIO_SESSION_ID)).containsExactly(period1);
assertThat(listener.getEvents(EVENT_VIDEO_SIZE_CHANGED)).containsExactly(period0); assertThat(listener.getEvents(EVENT_VIDEO_SIZE_CHANGED)).containsExactly(period0);
assertThat(listener.getEvents(EVENT_RENDERED_FIRST_FRAME)).containsExactly(period0); assertThat(listener.getEvents(EVENT_RENDERED_FIRST_FRAME)).containsExactly(period0);
...@@ -402,8 +406,6 @@ public final class AnalyticsCollectorTest { ...@@ -402,8 +406,6 @@ public final class AnalyticsCollectorTest {
period0 /* BUFFERING */, period0 /* BUFFERING */,
period0 /* READY */, period0 /* READY */,
period0 /* setPlayWhenReady=true */, period0 /* setPlayWhenReady=true */,
period1Seq2 /* BUFFERING */,
period1Seq2 /* READY */,
period1Seq2 /* ENDED */); period1Seq2 /* ENDED */);
assertThat(listener.getEvents(EVENT_TIMELINE_CHANGED)) assertThat(listener.getEvents(EVENT_TIMELINE_CHANGED))
.containsExactly(WINDOW_0 /* PLAYLIST_CHANGED */, period0 /* SOURCE_UPDATE */); .containsExactly(WINDOW_0 /* PLAYLIST_CHANGED */, period0 /* SOURCE_UPDATE */);
...@@ -429,7 +431,7 @@ public final class AnalyticsCollectorTest { ...@@ -429,7 +431,7 @@ public final class AnalyticsCollectorTest {
period1Seq1 /* media */, period1Seq1 /* media */,
period1Seq2 /* media */); period1Seq2 /* media */);
assertThat(listener.getEvents(EVENT_DOWNSTREAM_FORMAT_CHANGED)) assertThat(listener.getEvents(EVENT_DOWNSTREAM_FORMAT_CHANGED))
.containsExactly(period0, period1Seq1, period1Seq2, period1Seq2); .containsExactly(period0, period1Seq1, period1Seq1, period1Seq2, period1Seq2);
assertThat(listener.getEvents(EVENT_MEDIA_PERIOD_CREATED)) assertThat(listener.getEvents(EVENT_MEDIA_PERIOD_CREATED))
.containsExactly(period0, period1Seq1, period1Seq2); .containsExactly(period0, period1Seq1, period1Seq2);
assertThat(listener.getEvents(EVENT_MEDIA_PERIOD_RELEASED)) assertThat(listener.getEvents(EVENT_MEDIA_PERIOD_RELEASED))
...@@ -437,21 +439,22 @@ public final class AnalyticsCollectorTest { ...@@ -437,21 +439,22 @@ public final class AnalyticsCollectorTest {
assertThat(listener.getEvents(EVENT_READING_STARTED)) assertThat(listener.getEvents(EVENT_READING_STARTED))
.containsExactly(period0, period1Seq1, period1Seq2); .containsExactly(period0, period1Seq1, period1Seq2);
assertThat(listener.getEvents(EVENT_DECODER_ENABLED)) assertThat(listener.getEvents(EVENT_DECODER_ENABLED))
.containsExactly(period0, period0, period1Seq2); .containsExactly(period0, period1, period0, period1Seq2);
assertThat(listener.getEvents(EVENT_DECODER_INIT)) assertThat(listener.getEvents(EVENT_DECODER_INIT))
.containsExactly(period0, period1Seq1, period1Seq2, period1Seq2); .containsExactly(period0, period1Seq1, period1Seq1, period1Seq2, period1Seq2);
assertThat(listener.getEvents(EVENT_DECODER_FORMAT_CHANGED)) assertThat(listener.getEvents(EVENT_DECODER_FORMAT_CHANGED))
.containsExactly(period0, period1Seq1, period1Seq2, period1Seq2); .containsExactly(period0, period1Seq1, period1Seq1, period1Seq2, period1Seq2);
assertThat(listener.getEvents(EVENT_DECODER_DISABLED)).containsExactly(period0); assertThat(listener.getEvents(EVENT_DECODER_DISABLED)).containsExactly(period0, period0);
assertThat(listener.getEvents(EVENT_AUDIO_SESSION_ID)).containsExactly(period1Seq2); assertThat(listener.getEvents(EVENT_AUDIO_SESSION_ID))
.containsExactly(period1Seq1, period1Seq2);
assertThat(listener.getEvents(EVENT_DROPPED_VIDEO_FRAMES)) assertThat(listener.getEvents(EVENT_DROPPED_VIDEO_FRAMES))
.containsExactly(period0, period1Seq2, period1Seq2); .containsExactly(period0, period1Seq2);
assertThat(listener.getEvents(EVENT_VIDEO_SIZE_CHANGED)) assertThat(listener.getEvents(EVENT_VIDEO_SIZE_CHANGED))
.containsExactly(period0, period1Seq1, period0, period1Seq2); .containsExactly(period0, period1Seq1, period0, period1Seq2);
assertThat(listener.getEvents(EVENT_RENDERED_FIRST_FRAME)) assertThat(listener.getEvents(EVENT_RENDERED_FIRST_FRAME))
.containsExactly(period0, period1Seq1, period0, period1Seq2); .containsExactly(period0, period1Seq1, period0, period1Seq2);
assertThat(listener.getEvents(EVENT_VIDEO_FRAME_PROCESSING_OFFSET)) assertThat(listener.getEvents(EVENT_VIDEO_FRAME_PROCESSING_OFFSET))
.containsExactly(period0, period1Seq2, period1Seq2); .containsExactly(period0, period1Seq2);
listener.assertNoMoreEvents(); listener.assertNoMoreEvents();
} }
...@@ -749,11 +752,13 @@ public final class AnalyticsCollectorTest { ...@@ -749,11 +752,13 @@ public final class AnalyticsCollectorTest {
.containsExactly(period0Seq0, period1Seq1); .containsExactly(period0Seq0, period1Seq1);
assertThat(listener.getEvents(EVENT_MEDIA_PERIOD_RELEASED)).containsExactly(period0Seq0); assertThat(listener.getEvents(EVENT_MEDIA_PERIOD_RELEASED)).containsExactly(period0Seq0);
assertThat(listener.getEvents(EVENT_READING_STARTED)).containsExactly(period0Seq0, period0Seq1); assertThat(listener.getEvents(EVENT_READING_STARTED)).containsExactly(period0Seq0, period0Seq1);
assertThat(listener.getEvents(EVENT_DECODER_ENABLED)).containsExactly(period0Seq0, period0Seq1); assertThat(listener.getEvents(EVENT_DECODER_ENABLED))
.containsExactly(period0Seq0, period0Seq1, period0Seq1);
assertThat(listener.getEvents(EVENT_DECODER_INIT)).containsExactly(period0Seq0, period0Seq1); assertThat(listener.getEvents(EVENT_DECODER_INIT)).containsExactly(period0Seq0, period0Seq1);
assertThat(listener.getEvents(EVENT_DECODER_FORMAT_CHANGED)) assertThat(listener.getEvents(EVENT_DECODER_FORMAT_CHANGED))
.containsExactly(period0Seq0, period0Seq1); .containsExactly(period0Seq0, period0Seq1);
assertThat(listener.getEvents(EVENT_DECODER_DISABLED)).containsExactly(period0Seq0); assertThat(listener.getEvents(EVENT_DECODER_DISABLED))
.containsExactly(period0Seq0, period0Seq0);
assertThat(listener.getEvents(EVENT_DROPPED_VIDEO_FRAMES)).containsExactly(period0Seq1); assertThat(listener.getEvents(EVENT_DROPPED_VIDEO_FRAMES)).containsExactly(period0Seq1);
assertThat(listener.getEvents(EVENT_VIDEO_SIZE_CHANGED)) assertThat(listener.getEvents(EVENT_VIDEO_SIZE_CHANGED))
.containsExactly(period0Seq0, period0Seq1); .containsExactly(period0Seq0, period0Seq1);
......
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