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Commit c2c41558 by andrewlewis Committed by Oliver Woodman
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Merge the internal timeline into ExoPlayerImplInternal. 

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=129325922
parent ee565300
Inline Side-by-side
Showing with 474 additions and 514 deletions
library/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java
......@@ -86,8 +86,7 @@ import java.util.ArrayList;
private static final int MSG_PERIOD_PREPARED = 6;
private static final int MSG_SOURCE_CONTINUE_LOADING_REQUESTED = 7;
private static final int MSG_TRACK_SELECTION_INVALIDATED = 8;
private static final int MSG_SOURCE_INVALIDATED = 9;
private static final int MSG_CUSTOM = 10;
private static final int MSG_CUSTOM = 9;
private static final int PREPARING_SOURCE_INTERVAL_MS = 10;
private static final int RENDERING_INTERVAL_MS = 10;
......@@ -100,13 +99,14 @@ import java.util.ArrayList;
*/
private static final int MAXIMUM_BUFFER_AHEAD_PERIODS = 100;
private final Renderer[] renderers;
private final RendererCapabilities[] rendererCapabilities;
private final TrackSelector trackSelector;
private final LoadControl loadControl;
private final StandaloneMediaClock standaloneMediaClock;
private final Handler handler;
private final HandlerThread internalPlaybackThread;
private final Handler eventHandler;
private final InternalTimeline internalTimeline;
private PlaybackInfo playbackInfo;
private Renderer rendererMediaClockSource;
......@@ -124,9 +124,20 @@ import java.util.ArrayList;
private long internalPositionUs;
private boolean isTimelineReady;
private boolean isTimelineEnded;
private int bufferAheadPeriodCount;
private Period playingPeriod;
private Period readingPeriod;
private Period loadingPeriod;
private long playingPeriodEndPositionUs;
private Timeline timeline;
public ExoPlayerImplInternal(Renderer[] renderers, TrackSelector trackSelector,
LoadControl loadControl, boolean playWhenReady, Handler eventHandler,
PlaybackInfo playbackInfo) {
this.renderers = renderers;
this.trackSelector = trackSelector;
this.loadControl = loadControl;
this.playWhenReady = playWhenReady;
......@@ -134,13 +145,15 @@ import java.util.ArrayList;
this.state = ExoPlayer.STATE_IDLE;
this.playbackInfo = playbackInfo;
rendererCapabilities = new RendererCapabilities[renderers.length];
for (int i = 0; i < renderers.length; i++) {
renderers[i].setIndex(i);
rendererCapabilities[i] = renderers[i].getCapabilities();
}
playingPeriodEndPositionUs = C.UNSET_TIME_US;
standaloneMediaClock = new StandaloneMediaClock();
enabledRenderers = new Renderer[0];
internalTimeline = new InternalTimeline(renderers);
trackSelector.init(this);
......@@ -259,21 +272,17 @@ import java.util.ArrayList;
return true;
}
case MSG_PERIOD_PREPARED: {
internalTimeline.handlePeriodPrepared((MediaPeriod) msg.obj);
handlePeriodPrepared((MediaPeriod) msg.obj);
return true;
}
case MSG_SOURCE_CONTINUE_LOADING_REQUESTED: {
internalTimeline.handleContinueLoadingRequested((MediaPeriod) msg.obj);
handleContinueLoadingRequested((MediaPeriod) msg.obj);
return true;
}
case MSG_TRACK_SELECTION_INVALIDATED: {
reselectTracksInternal();
return true;
}
case MSG_SOURCE_INVALIDATED: {
internalTimeline.invalidate((Timeline) msg.obj);
return true;
}
case MSG_CUSTOM: {
sendMessagesInternal((ExoPlayerMessage[]) msg.obj);
return true;
......@@ -305,7 +314,7 @@ import java.util.ArrayList;
@Override
public void onTimelineChanged(Timeline timeline) {
try {
internalTimeline.invalidate(timeline);
handleSourceInvalidated(timeline);
} catch (ExoPlaybackException | IOException e) {
Log.e(TAG, "Error handling timeline change.", e);
eventHandler.obtainMessage(MSG_ERROR, e).sendToTarget();
......@@ -379,10 +388,10 @@ import java.util.ArrayList;
}
private void updatePlaybackPositions() throws ExoPlaybackException {
MediaPeriod mediaPeriod = internalTimeline.getPeriod();
if (mediaPeriod == null) {
if (playingPeriod == null) {
return;
}
MediaPeriod mediaPeriod = playingPeriod.mediaPeriod;
// Update the duration.
if (playbackInfo.durationUs == C.UNSET_TIME_US) {
......@@ -400,7 +409,7 @@ import java.util.ArrayList;
} else {
internalPositionUs = standaloneMediaClock.getPositionUs();
}
positionUs = internalPositionUs - internalTimeline.playingPeriod.offsetUs;
positionUs = internalPositionUs - playingPeriod.offsetUs;
}
playbackInfo.positionUs = positionUs;
elapsedRealtimeUs = SystemClock.elapsedRealtime() * 1000;
......@@ -418,10 +427,10 @@ import java.util.ArrayList;
private void doSomeWork() throws ExoPlaybackException, IOException {
long operationStartTimeMs = SystemClock.elapsedRealtime();
internalTimeline.updatePeriods();
if (internalTimeline.getPeriod() == null) {
// We're still waiting for the first source to be prepared.
internalTimeline.maybeThrowPeriodPrepareError();
updatePeriods();
if (playingPeriod == null) {
// We're still waiting for the first period to be prepared.
maybeThrowPeriodPrepareError();
scheduleNextOperation(MSG_DO_SOME_WORK, operationStartTimeMs, PREPARING_SOURCE_INTERVAL_MS);
return;
}
......@@ -447,23 +456,25 @@ import java.util.ArrayList;
}
if (!allRenderersReadyOrEnded) {
internalTimeline.maybeThrowPeriodPrepareError();
maybeThrowPeriodPrepareError();
}
if (allRenderersEnded && (playbackInfo.durationUs == C.UNSET_TIME_US
|| playbackInfo.durationUs <= playbackInfo.positionUs) && internalTimeline.isEnded) {
if (allRenderersEnded
&& (playbackInfo.durationUs == C.UNSET_TIME_US
|| playbackInfo.durationUs <= playbackInfo.positionUs)
&& isTimelineEnded) {
setState(ExoPlayer.STATE_ENDED);
stopRenderers();
} else if (state == ExoPlayer.STATE_BUFFERING) {
if ((enabledRenderers.length > 0 ? allRenderersReadyOrEnded : internalTimeline.isReady)
&& internalTimeline.haveSufficientBuffer(rebuffering)) {
if ((enabledRenderers.length > 0 ? allRenderersReadyOrEnded : isTimelineReady)
&& haveSufficientBuffer(rebuffering)) {
setState(ExoPlayer.STATE_READY);
if (playWhenReady) {
startRenderers();
}
}
} else if (state == ExoPlayer.STATE_READY) {
if (enabledRenderers.length > 0 ? !allRenderersReadyOrEnded : !internalTimeline.isReady) {
if (enabledRenderers.length > 0 ? !allRenderersReadyOrEnded : !isTimelineReady) {
rebuffering = playWhenReady;
setState(ExoPlayer.STATE_BUFFERING);
stopRenderers();
......@@ -525,7 +536,52 @@ import java.util.ArrayList;
stopRenderers();
rebuffering = false;
positionUs = internalTimeline.seekTo(periodIndex, positionUs);
if (positionUs == C.UNSET_TIME_US) {
// We don't know where to seek to yet, so clear the whole timeline.
periodIndex = Timeline.NO_PERIOD_INDEX;
}
// Clear the timeline, but keep the requested period if it is already prepared.
Period period = playingPeriod;
Period newPlayingPeriod = null;
while (period != null) {
if (period.index == periodIndex && period.prepared) {
newPlayingPeriod = period;
} else {
period.release();
}
period = period.nextPeriod;
}
// Update loaded periods.
bufferAheadPeriodCount = 0;
if (newPlayingPeriod != null) {
newPlayingPeriod.nextPeriod = null;
setPlayingPeriod(newPlayingPeriod);
updateTimelineState();
readingPeriod = playingPeriod;
loadingPeriod = playingPeriod;
if (playingPeriod.hasEnabledTracks) {
positionUs = playingPeriod.mediaPeriod.seekToUs(positionUs);
}
resetInternalPosition(positionUs);
maybeContinueLoading();
} else {
for (Renderer renderer : enabledRenderers) {
renderer.disable();
}
enabledRenderers = new Renderer[0];
rendererMediaClock = null;
rendererMediaClockSource = null;
playingPeriod = null;
readingPeriod = null;
loadingPeriod = null;
if (positionUs != C.UNSET_TIME_US) {
resetInternalPosition(positionUs);
}
}
// Update the expose playback information.
if (periodIndex != playbackInfo.periodIndex) {
playbackInfo = new PlaybackInfo(periodIndex);
playbackInfo.startPositionUs = positionUs;
......@@ -544,9 +600,8 @@ import java.util.ArrayList;
}
private void resetInternalPosition(long periodPositionUs) throws ExoPlaybackException {
long sourceOffsetUs =
internalTimeline.playingPeriod == null ? 0 : internalTimeline.playingPeriod.offsetUs;
internalPositionUs = sourceOffsetUs + periodPositionUs;
long periodOffsetUs = playingPeriod == null ? 0 : playingPeriod.offsetUs;
internalPositionUs = periodOffsetUs + periodPositionUs;
standaloneMediaClock.setPositionUs(internalPositionUs);
for (Renderer renderer : enabledRenderers) {
renderer.resetPosition(internalPositionUs);
......@@ -587,7 +642,15 @@ import java.util.ArrayList;
mediaSource.releaseSource();
mediaSource = null;
}
internalTimeline.reset();
releasePeriodsFrom(playingPeriod != null ? playingPeriod : loadingPeriod);
playingPeriodEndPositionUs = C.UNSET_TIME_US;
isTimelineReady = false;
isTimelineEnded = false;
playingPeriod = null;
readingPeriod = null;
loadingPeriod = null;
timeline = null;
bufferAheadPeriodCount = 0;
loadControl.reset();
setIsLoading(false);
}
......@@ -616,563 +679,460 @@ import java.util.ArrayList;
}
private void reselectTracksInternal() throws ExoPlaybackException {
if (internalTimeline.getPeriod() == null) {
if (playingPeriod == null) {
// We don't have tracks yet, so we don't care.
return;
}
internalTimeline.reselectTracks();
updatePlaybackPositions();
handler.sendEmptyMessage(MSG_DO_SOME_WORK);
}
// TODO[playlists]: Merge this into the outer class.
/**
* Keeps track of the {@link Period}s of media being played in the timeline.
*/
private final class InternalTimeline {
private final Renderer[] renderers;
private final RendererCapabilities[] rendererCapabilities;
public boolean isReady;
public boolean isEnded;
private int bufferAheadPeriodCount;
private Period playingPeriod;
private Period readingPeriod;
private Period loadingPeriod;
// Reselect tracks on each period in turn, until the selection changes.
Period period = playingPeriod;
boolean selectionsChangedForReadPeriod = true;
while (true) {
if (period == null || !period.prepared) {
// The reselection did not change any prepared periods.
return;
}
if (period.selectTracks()) {
// Selected tracks have changed for this period.
break;
}
if (period == readingPeriod) {
// The track reselection didn't affect any period that has been read.
selectionsChangedForReadPeriod = false;
}
period = period.nextPeriod;
}
private long playingPeriodEndPositionUs;
if (selectionsChangedForReadPeriod) {
// Release everything after the playing period because a renderer may have read data from a
// track whose selection has now changed.
releasePeriodsFrom(playingPeriod.nextPeriod);
playingPeriod.nextPeriod = null;
readingPeriod = playingPeriod;
loadingPeriod = playingPeriod;
playingPeriodEndPositionUs = C.UNSET_TIME_US;
bufferAheadPeriodCount = 0;
private Timeline timeline;
// Update streams for the new selection, recreating all streams if reading ahead.
boolean recreateStreams = readingPeriod != playingPeriod;
TrackSelectionArray playingPeriodOldTrackSelections = playingPeriod.periodTrackSelections;
playingPeriod.updatePeriodTrackSelection(playbackInfo.positionUs, loadControl,
recreateStreams);
public InternalTimeline(Renderer[] renderers) {
this.renderers = renderers;
rendererCapabilities = new RendererCapabilities[renderers.length];
int enabledRendererCount = 0;
boolean[] rendererWasEnabledFlags = new boolean[renderers.length];
for (int i = 0; i < renderers.length; i++) {
rendererCapabilities[i] = renderers[i].getCapabilities();
Renderer renderer = renderers[i];
rendererWasEnabledFlags[i] = renderer.getState() != Renderer.STATE_DISABLED;
TrackSelection oldSelection = playingPeriodOldTrackSelections.get(i);
TrackSelection newSelection = playingPeriod.trackSelections.get(i);
if (newSelection != null) {
enabledRendererCount++;
}
if (rendererWasEnabledFlags[i]
&& (recreateStreams || !Util.areEqual(oldSelection, newSelection))) {
// We need to disable the renderer so that we can enable it with its new stream.
if (renderer == rendererMediaClockSource) {
// The renderer is providing the media clock.
if (newSelection == null) {
// The renderer won't be re-enabled. Sync standaloneMediaClock so that it can take
// over timing responsibilities.
standaloneMediaClock.setPositionUs(rendererMediaClock.getPositionUs());
}
rendererMediaClock = null;
rendererMediaClockSource = null;
}
ensureStopped(renderer);
renderer.disable();
}
}
playingPeriodEndPositionUs = C.UNSET_TIME_US;
trackSelector.onSelectionActivated(playingPeriod.trackSelectionData);
enableRenderers(rendererWasEnabledFlags, enabledRendererCount);
} else {
// Release and re-prepare/buffer periods after the one whose selection changed.
loadingPeriod = period;
period = loadingPeriod.nextPeriod;
while (period != null) {
period.release();
period = period.nextPeriod;
bufferAheadPeriodCount--;
}
loadingPeriod.nextPeriod = null;
long positionUs = Math.max(0, internalPositionUs - loadingPeriod.offsetUs);
loadingPeriod.updatePeriodTrackSelection(positionUs, loadControl, false);
}
maybeContinueLoading();
updatePlaybackPositions();
handler.sendEmptyMessage(MSG_DO_SOME_WORK);
}
public MediaPeriod getPeriod() throws ExoPlaybackException {
return playingPeriod == null ? null : playingPeriod.mediaPeriod;
public boolean haveSufficientBuffer(boolean rebuffering) {
if (loadingPeriod == null) {
return false;
}
public boolean haveSufficientBuffer(boolean rebuffering) {
if (loadingPeriod == null) {
return false;
long positionUs = internalPositionUs - loadingPeriod.offsetUs;
long bufferedPositionUs =
!loadingPeriod.prepared ? 0 : loadingPeriod.mediaPeriod.getBufferedPositionUs();
if (bufferedPositionUs == C.END_OF_SOURCE_US) {
if (loadingPeriod.isLast) {
return true;
}
long positionUs = internalPositionUs - loadingPeriod.offsetUs;
long bufferedPositionUs = !loadingPeriod.prepared ? 0
: loadingPeriod.mediaPeriod.getBufferedPositionUs();
if (bufferedPositionUs == C.END_OF_SOURCE_US) {
if (loadingPeriod.isLast) {
return true;
}
bufferedPositionUs = loadingPeriod.mediaPeriod.getDurationUs();
}
return loadControl.shouldStartPlayback(bufferedPositionUs - positionUs, rebuffering);
bufferedPositionUs = loadingPeriod.mediaPeriod.getDurationUs();
}
return loadControl.shouldStartPlayback(bufferedPositionUs - positionUs, rebuffering);
}
public void maybeThrowPeriodPrepareError() throws IOException {
if (loadingPeriod != null && !loadingPeriod.prepared
&& (readingPeriod == null || readingPeriod.nextPeriod == loadingPeriod)) {
for (Renderer renderer : enabledRenderers) {
if (!renderer.hasReadStreamToEnd()) {
return;
}
public void maybeThrowPeriodPrepareError() throws IOException {
if (loadingPeriod != null && !loadingPeriod.prepared
&& (readingPeriod == null || readingPeriod.nextPeriod == loadingPeriod)) {
for (Renderer renderer : enabledRenderers) {
if (!renderer.hasReadStreamToEnd()) {
return;
}
loadingPeriod.mediaPeriod.maybeThrowPrepareError();
}
loadingPeriod.mediaPeriod.maybeThrowPrepareError();
}
}
public void invalidate(Timeline timeline) throws ExoPlaybackException, IOException {
Timeline oldTimeline = this.timeline;
this.timeline = timeline;
eventHandler.obtainMessage(MSG_TIMELINE_CHANGED, timeline).sendToTarget();
// Update the loaded periods to take into account the new timeline.
if (playingPeriod != null) {
int index = timeline.getIndexOfPeriod(playingPeriod.id);
if (index == Timeline.NO_PERIOD_INDEX) {
int newPlayingPeriodIndex =
mediaSource.getNewPlayingPeriodIndex(playingPeriod.index, oldTimeline);
if (newPlayingPeriodIndex == Timeline.NO_PERIOD_INDEX) {
// There is no period to play, so stop the player.
stopInternal();
return;
}
// Release all loaded periods and seek to the new playing period index.
releasePeriodsFrom(playingPeriod);
playingPeriod = null;
MediaSource.Position defaultStartPosition =
mediaSource.getDefaultStartPosition(newPlayingPeriodIndex);
if (defaultStartPosition != null) {
seekToPeriodPosition(defaultStartPosition.periodIndex, defaultStartPosition.positionUs);
} else {
seekToPeriodPosition(newPlayingPeriodIndex, C.UNSET_TIME_US);
}
public void handleSourceInvalidated(Timeline timeline) throws ExoPlaybackException, IOException {
Timeline oldTimeline = this.timeline;
this.timeline = timeline;
eventHandler.obtainMessage(MSG_TIMELINE_CHANGED, timeline).sendToTarget();
// Update the loaded periods to take into account the new timeline.
if (playingPeriod != null) {
int index = timeline.getIndexOfPeriod(playingPeriod.id);
if (index == Timeline.NO_PERIOD_INDEX) {
int newPlayingPeriodIndex =
mediaSource.getNewPlayingPeriodIndex(playingPeriod.index, oldTimeline);
if (newPlayingPeriodIndex == Timeline.NO_PERIOD_INDEX) {
// There is no period to play, so stop the player.
stopInternal();
return;
}
// The playing period is also in the new timeline. Update index and isLast on each loaded
// period until a period is found that has changed.
int periodCount = timeline.getPeriodCount();
playingPeriod.index = index;
playingPeriod.isLast = timeline.isFinal() && index == periodCount - 1;
Period previousPeriod = playingPeriod;
boolean seenReadingPeriod = false;
bufferAheadPeriodCount = 0;
while (previousPeriod.nextPeriod != null) {
Period period = previousPeriod.nextPeriod;
index++;
if (!period.id.equals(timeline.getPeriodId(index))) {
if (!seenReadingPeriod) {
// Renderers may have read a period that has been removed, so release all loaded
// periods and seek to the playing period index.
index = playingPeriod.index;
releasePeriodsFrom(playingPeriod);
playingPeriod = null;
seekToPeriodPosition(index, 0);
return;
}
// Update the loading period to be the latest period that is still valid.
loadingPeriod = previousPeriod;
loadingPeriod.nextPeriod = null;
// Release the rest of the timeline.
releasePeriodsFrom(period);
break;
}
// Release all loaded periods and seek to the new playing period index.
releasePeriodsFrom(playingPeriod);
playingPeriod = null;
bufferAheadPeriodCount++;
period.index = index;
period.isLast = timeline.isFinal() && index == periodCount - 1;
if (period == readingPeriod) {
seenReadingPeriod = true;
}
previousPeriod = period;
}
} else if (loadingPeriod != null) {
Object id = loadingPeriod.id;
int index = timeline.getIndexOfPeriod(id);
if (index == Timeline.NO_PERIOD_INDEX) {
loadingPeriod.release();
loadingPeriod = null;
bufferAheadPeriodCount = 0;
MediaSource.Position defaultStartPosition =
mediaSource.getDefaultStartPosition(newPlayingPeriodIndex);
if (defaultStartPosition != null) {
seekToPeriodPosition(defaultStartPosition.periodIndex, defaultStartPosition.positionUs);
} else {
int periodCount = timeline.getPeriodCount();
loadingPeriod.index = index;
loadingPeriod.isLast = timeline.isFinal() && index == periodCount - 1;
}
}
// TODO[playlists]: Signal the identifier discontinuity, even if the index hasn't changed.
if (oldTimeline != null) {
int newPlayingIndex = playingPeriod != null ? playingPeriod.index
: loadingPeriod != null ? loadingPeriod.index
: mediaSource.getNewPlayingPeriodIndex(playbackInfo.periodIndex, oldTimeline);
if (newPlayingIndex != Timeline.NO_PERIOD_INDEX
&& newPlayingIndex != playbackInfo.periodIndex) {
long oldPositionUs = playbackInfo.positionUs;
playbackInfo = new PlaybackInfo(newPlayingIndex);
playbackInfo.startPositionUs = oldPositionUs;
updatePlaybackPositions();
eventHandler.obtainMessage(MSG_POSITION_DISCONTINUITY, playbackInfo).sendToTarget();
seekToPeriodPosition(newPlayingPeriodIndex, C.UNSET_TIME_US);
}
}
}
public void updatePeriods() throws ExoPlaybackException, IOException {
if (timeline == null) {
// We're waiting to get information about periods.
return;
}
// Update the loading period.
if (loadingPeriod == null || (loadingPeriod.isFullyBuffered() && !loadingPeriod.isLast
&& bufferAheadPeriodCount < MAXIMUM_BUFFER_AHEAD_PERIODS)) {
int periodIndex =
loadingPeriod == null ? playbackInfo.periodIndex : loadingPeriod.index + 1;
long startPositionUs = playbackInfo.positionUs;
if (loadingPeriod != null || startPositionUs == C.UNSET_TIME_US) {
// We are starting to load the next period or seeking to the default position, so request
// a period and position from the source.
MediaSource.Position defaultStartPosition =
mediaSource.getDefaultStartPosition(periodIndex);
if (defaultStartPosition != null) {
periodIndex = defaultStartPosition.periodIndex;
startPositionUs = defaultStartPosition.positionUs;
} else {
startPositionUs = C.UNSET_TIME_US;
}
}
// The playing period is also in the new timeline. Update index and isLast on each loaded
// period until a period is found that has changed.
int periodCount = timeline.getPeriodCount();
playingPeriod.index = index;
playingPeriod.isLast = timeline.isFinal() && index == periodCount - 1;
MediaPeriod mediaPeriod;
if (startPositionUs != C.UNSET_TIME_US
&& (mediaPeriod = mediaSource.createPeriod(periodIndex)) != null) {
Period newPeriod = new Period(renderers, rendererCapabilities, trackSelector, mediaPeriod,
timeline.getPeriodId(periodIndex), periodIndex, startPositionUs);
newPeriod.isLast = timeline.isFinal() && periodIndex == timeline.getPeriodCount() - 1;
if (loadingPeriod != null) {
loadingPeriod.setNextPeriod(newPeriod);
Period previousPeriod = playingPeriod;
boolean seenReadingPeriod = false;
bufferAheadPeriodCount = 0;
while (previousPeriod.nextPeriod != null) {
Period period = previousPeriod.nextPeriod;
index++;
if (!period.id.equals(timeline.getPeriodId(index))) {
if (!seenReadingPeriod) {
// Renderers may have read a period that has been removed, so release all loaded periods
// and seek to the playing period index.
index = playingPeriod.index;
releasePeriodsFrom(playingPeriod);
playingPeriod = null;
seekToPeriodPosition(index, 0);
return;
}
bufferAheadPeriodCount++;
loadingPeriod = newPeriod;
setIsLoading(true);
loadingPeriod.mediaPeriod.preparePeriod(ExoPlayerImplInternal.this,
loadControl.getAllocator(), startPositionUs);
}
}
if (loadingPeriod == null || loadingPeriod.isFullyBuffered()) {
setIsLoading(false);
} else if (loadingPeriod != null && loadingPeriod.needsContinueLoading) {
maybeContinueLoading();
}
// Update the loading period to be the latest period that is still valid.
loadingPeriod = previousPeriod;
loadingPeriod.nextPeriod = null;
if (playingPeriod == null) {
// We're waiting for the first period to be prepared.
return;
}
// Update the playing and reading periods.
if (playingPeriodEndPositionUs == C.UNSET_TIME_US && playingPeriod.isFullyBuffered()) {
playingPeriodEndPositionUs = playingPeriod.offsetUs
+ playingPeriod.mediaPeriod.getDurationUs();
}
while (playingPeriod != readingPeriod && playingPeriod.nextPeriod != null
&& internalPositionUs >= playingPeriod.nextPeriod.offsetUs) {
// All enabled renderers' streams have been read to the end, and the playback position
// reached the end of the playing period, so advance playback to the next period.
playingPeriod.release();
setPlayingPeriod(playingPeriod.nextPeriod);
bufferAheadPeriodCount--;
playbackInfo = new PlaybackInfo(playingPeriod.index);
playbackInfo.startPositionUs = playingPeriod.startPositionUs;
updatePlaybackPositions();
eventHandler.obtainMessage(MSG_POSITION_DISCONTINUITY, playbackInfo).sendToTarget();
}
updateTimelineState();
if (readingPeriod == null) {
// The renderers have their final SampleStreams.
return;
}
for (Renderer renderer : enabledRenderers) {
if (!renderer.hasReadStreamToEnd()) {
return;
}
}
if (readingPeriod.nextPeriod != null && readingPeriod.nextPeriod.prepared) {
TrackSelectionArray oldTrackSelections = readingPeriod.trackSelections;
readingPeriod = readingPeriod.nextPeriod;
TrackSelectionArray newTrackSelections = readingPeriod.trackSelections;
for (int i = 0; i < renderers.length; i++) {
Renderer renderer = renderers[i];
TrackSelection oldSelection = oldTrackSelections.get(i);
TrackSelection newSelection = newTrackSelections.get(i);
if (oldSelection != null) {
if (newSelection != null) {
// Replace the renderer's SampleStream so the transition to playing the next period
// can be seamless.
Format[] formats = new Format[newSelection.length()];
for (int j = 0; j < formats.length; j++) {
formats[j] = newSelection.getFormat(j);
}
renderer.replaceStream(formats, readingPeriod.sampleStreams[i],
readingPeriod.offsetUs);
} else {
// The renderer will be disabled when transitioning to playing the next period. Mark
// the SampleStream as final to play out any remaining data.
renderer.setCurrentStreamIsFinal();
}
}
}
} else if (readingPeriod.isLast) {
readingPeriod = null;
for (Renderer renderer : enabledRenderers) {
renderer.setCurrentStreamIsFinal();
// Release the rest of the timeline.
releasePeriodsFrom(period);
break;
}
}
}
public void handlePeriodPrepared(MediaPeriod period) throws ExoPlaybackException {
if (loadingPeriod == null || loadingPeriod.mediaPeriod != period) {
// Stale event.
return;
}
loadingPeriod.handlePrepared(loadingPeriod.startPositionUs, loadControl);
if (playingPeriod == null) {
// This is the first prepared period, so start playing it.
readingPeriod = loadingPeriod;
setPlayingPeriod(readingPeriod);
if (playbackInfo.startPositionUs == C.UNSET_TIME_US) {
// Update the playback info when seeking to a default position.
playbackInfo = new PlaybackInfo(playingPeriod.index);
playbackInfo.startPositionUs = playingPeriod.startPositionUs;
resetInternalPosition(playbackInfo.startPositionUs);
updatePlaybackPositions();
eventHandler.obtainMessage(MSG_POSITION_DISCONTINUITY, playbackInfo).sendToTarget();
bufferAheadPeriodCount++;
period.index = index;
period.isLast = timeline.isFinal() && index == periodCount - 1;
if (period == readingPeriod) {
seenReadingPeriod = true;
}
updateTimelineState();
previousPeriod = period;
}
maybeContinueLoading();
}
public void handleContinueLoadingRequested(MediaPeriod period) {
if (loadingPeriod == null || loadingPeriod.mediaPeriod != period) {
return;
} else if (loadingPeriod != null) {
Object id = loadingPeriod.id;
int index = timeline.getIndexOfPeriod(id);
if (index == Timeline.NO_PERIOD_INDEX) {
loadingPeriod.release();
loadingPeriod = null;
bufferAheadPeriodCount = 0;
} else {
int periodCount = timeline.getPeriodCount();
loadingPeriod.index = index;
loadingPeriod.isLast = timeline.isFinal() && index == periodCount - 1;
}
maybeContinueLoading();
}
private void maybeContinueLoading() {
long nextLoadPositionUs = loadingPeriod.mediaPeriod.getNextLoadPositionUs();
if (nextLoadPositionUs != C.END_OF_SOURCE_US) {
long positionUs = internalPositionUs - loadingPeriod.offsetUs;
long bufferedDurationUs = nextLoadPositionUs - positionUs;
boolean continueLoading = loadControl.shouldContinueLoading(bufferedDurationUs);
setIsLoading(continueLoading);
if (continueLoading) {
loadingPeriod.needsContinueLoading = false;
loadingPeriod.mediaPeriod.continueLoading(positionUs);
} else {
loadingPeriod.needsContinueLoading = true;
}
} else {
setIsLoading(false);
// TODO[playlists]: Signal the identifier discontinuity, even if the index hasn't changed.
if (oldTimeline != null) {
int newPlayingIndex = playingPeriod != null ? playingPeriod.index
: loadingPeriod != null ? loadingPeriod.index
: mediaSource.getNewPlayingPeriodIndex(playbackInfo.periodIndex, oldTimeline);
if (newPlayingIndex != Timeline.NO_PERIOD_INDEX
&& newPlayingIndex != playbackInfo.periodIndex) {
long oldPositionUs = playbackInfo.positionUs;
playbackInfo = new PlaybackInfo(newPlayingIndex);
playbackInfo.startPositionUs = oldPositionUs;
updatePlaybackPositions();
eventHandler.obtainMessage(MSG_POSITION_DISCONTINUITY, playbackInfo).sendToTarget();
}
}
}
public long seekTo(int periodIndex, long seekPositionUs) throws ExoPlaybackException {
if (seekPositionUs == C.UNSET_TIME_US) {
// We don't know where to seek to yet, so clear the whole timeline.
periodIndex = Timeline.NO_PERIOD_INDEX;
}
public void updatePeriods() throws ExoPlaybackException, IOException {
if (timeline == null) {
// We're waiting to get information about periods.
return;
}
// Clear the timeline, but keep the requested period if it is already prepared.
Period period = playingPeriod;
Period newPlayingPeriod = null;
while (period != null) {
if (period.index == periodIndex && period.prepared) {
newPlayingPeriod = period;
// Update the loading period.
if (loadingPeriod == null || (loadingPeriod.isFullyBuffered() && !loadingPeriod.isLast
&& bufferAheadPeriodCount < MAXIMUM_BUFFER_AHEAD_PERIODS)) {
int periodIndex = loadingPeriod == null ? playbackInfo.periodIndex : loadingPeriod.index + 1;
long startPositionUs = playbackInfo.positionUs;
if (loadingPeriod != null || startPositionUs == C.UNSET_TIME_US) {
// We are starting to load the next period or seeking to the default position, so request a
// period and position from the source.
MediaSource.Position defaultStartPosition =
mediaSource.getDefaultStartPosition(periodIndex);
if (defaultStartPosition != null) {
periodIndex = defaultStartPosition.periodIndex;
startPositionUs = defaultStartPosition.positionUs;
} else {
period.release();
startPositionUs = C.UNSET_TIME_US;
}
period = period.nextPeriod;
}
bufferAheadPeriodCount = 0;
if (newPlayingPeriod != null) {
newPlayingPeriod.nextPeriod = null;
setPlayingPeriod(newPlayingPeriod);
updateTimelineState();
readingPeriod = playingPeriod;
loadingPeriod = playingPeriod;
if (playingPeriod.hasEnabledTracks) {
seekPositionUs = playingPeriod.mediaPeriod.seekToUs(seekPositionUs);
}
resetInternalPosition(seekPositionUs);
maybeContinueLoading();
} else {
for (Renderer renderer : enabledRenderers) {
renderer.disable();
}
enabledRenderers = new Renderer[0];
rendererMediaClock = null;
rendererMediaClockSource = null;
playingPeriod = null;
readingPeriod = null;
loadingPeriod = null;
if (seekPositionUs != C.UNSET_TIME_US) {
resetInternalPosition(seekPositionUs);
MediaPeriod mediaPeriod;
if (startPositionUs != C.UNSET_TIME_US
&& (mediaPeriod = mediaSource.createPeriod(periodIndex)) != null) {
Period newPeriod = new Period(renderers, rendererCapabilities, trackSelector, mediaPeriod,
timeline.getPeriodId(periodIndex), periodIndex, startPositionUs);
newPeriod.isLast = timeline.isFinal() && periodIndex == timeline.getPeriodCount() - 1;
if (loadingPeriod != null) {
loadingPeriod.setNextPeriod(newPeriod);
}
bufferAheadPeriodCount++;
loadingPeriod = newPeriod;
setIsLoading(true);
loadingPeriod.mediaPeriod.preparePeriod(this, loadControl.getAllocator(), startPositionUs);
}
return seekPositionUs;
}
public void reselectTracks() throws ExoPlaybackException {
// Reselect tracks on each period in turn, until the selection changes.
Period period = playingPeriod;
boolean selectionsChangedForReadPeriod = true;
while (true) {
if (period == null || !period.prepared) {
// The reselection did not change any prepared periods.
return;
}
if (period.selectTracks()) {
// Selected tracks have changed for this period.
break;
}
if (period == readingPeriod) {
// The track reselection didn't affect any period that has been read.
selectionsChangedForReadPeriod = false;
}
period = period.nextPeriod;
}
if (loadingPeriod == null || loadingPeriod.isFullyBuffered()) {
setIsLoading(false);
} else if (loadingPeriod != null && loadingPeriod.needsContinueLoading) {
maybeContinueLoading();
}
if (selectionsChangedForReadPeriod) {
// Release everything after the playing period because a renderer may have read data from a
// track whose selection has now changed.
releasePeriodsFrom(playingPeriod.nextPeriod);
playingPeriod.nextPeriod = null;
readingPeriod = playingPeriod;
loadingPeriod = playingPeriod;
playingPeriodEndPositionUs = C.UNSET_TIME_US;
bufferAheadPeriodCount = 0;
if (playingPeriod == null) {
// We're waiting for the first period to be prepared.
return;
}
// Update streams for the new selection, recreating all streams if reading ahead.
boolean recreateStreams = readingPeriod != playingPeriod;
TrackSelectionArray playingPeriodOldTrackSelections = playingPeriod.periodTrackSelections;
playingPeriod.updatePeriodTrackSelection(playbackInfo.positionUs, loadControl,
recreateStreams);
int enabledRendererCount = 0;
boolean[] rendererWasEnabledFlags = new boolean[renderers.length];
for (int i = 0; i < renderers.length; i++) {
Renderer renderer = renderers[i];
rendererWasEnabledFlags[i] = renderer.getState() != Renderer.STATE_DISABLED;
TrackSelection oldSelection = playingPeriodOldTrackSelections.get(i);
TrackSelection newSelection = playingPeriod.trackSelections.get(i);
// Update the playing and reading periods.
if (playingPeriodEndPositionUs == C.UNSET_TIME_US && playingPeriod.isFullyBuffered()) {
playingPeriodEndPositionUs = playingPeriod.offsetUs
+ playingPeriod.mediaPeriod.getDurationUs();
}
while (playingPeriod != readingPeriod && playingPeriod.nextPeriod != null
&& internalPositionUs >= playingPeriod.nextPeriod.offsetUs) {
// All enabled renderers' streams have been read to the end, and the playback position reached
// the end of the playing period, so advance playback to the next period.
playingPeriod.release();
setPlayingPeriod(playingPeriod.nextPeriod);
bufferAheadPeriodCount--;
playbackInfo = new PlaybackInfo(playingPeriod.index);
playbackInfo.startPositionUs = playingPeriod.startPositionUs;
updatePlaybackPositions();
eventHandler.obtainMessage(MSG_POSITION_DISCONTINUITY, playbackInfo).sendToTarget();
}
updateTimelineState();
if (readingPeriod == null) {
// The renderers have their final SampleStreams.
return;
}
for (Renderer renderer : enabledRenderers) {
if (!renderer.hasReadStreamToEnd()) {
return;
}
}
if (readingPeriod.nextPeriod != null && readingPeriod.nextPeriod.prepared) {
TrackSelectionArray oldTrackSelections = readingPeriod.trackSelections;
readingPeriod = readingPeriod.nextPeriod;
TrackSelectionArray newTrackSelections = readingPeriod.trackSelections;
for (int i = 0; i < renderers.length; i++) {
Renderer renderer = renderers[i];
TrackSelection oldSelection = oldTrackSelections.get(i);
TrackSelection newSelection = newTrackSelections.get(i);
if (oldSelection != null) {
if (newSelection != null) {
enabledRendererCount++;
}
if (rendererWasEnabledFlags[i]
&& (recreateStreams || !Util.areEqual(oldSelection, newSelection))) {
// We need to disable the renderer so that we can enable it with its new stream.
if (renderer == rendererMediaClockSource) {
// The renderer is providing the media clock.
if (newSelection == null) {
// The renderer won't be re-enabled. Sync standaloneMediaClock so that it can take
// over timing responsibilities.
standaloneMediaClock.setPositionUs(rendererMediaClock.getPositionUs());
}
rendererMediaClock = null;
rendererMediaClockSource = null;
// Replace the renderer's SampleStream so the transition to playing the next period can
// be seamless.
Format[] formats = new Format[newSelection.length()];
for (int j = 0; j < formats.length; j++) {
formats[j] = newSelection.getFormat(j);
}
ensureStopped(renderer);
renderer.disable();
renderer.replaceStream(formats, readingPeriod.sampleStreams[i], readingPeriod.offsetUs);
} else {
// The renderer will be disabled when transitioning to playing the next period. Mark the
// SampleStream as final to play out any remaining data.
renderer.setCurrentStreamIsFinal();
}
}
trackSelector.onSelectionActivated(playingPeriod.trackSelectionData);
enableRenderers(rendererWasEnabledFlags, enabledRendererCount);
} else {
// Release and re-prepare/buffer periods after the one whose selection changed.
loadingPeriod = period;
period = loadingPeriod.nextPeriod;
while (period != null) {
period.release();
period = period.nextPeriod;
bufferAheadPeriodCount--;
}
loadingPeriod.nextPeriod = null;
long positionUs = Math.max(0, internalPositionUs - loadingPeriod.offsetUs);
loadingPeriod.updatePeriodTrackSelection(positionUs, loadControl, false);
}
maybeContinueLoading();
}
public void reset() {
releasePeriodsFrom(playingPeriod != null ? playingPeriod : loadingPeriod);
playingPeriodEndPositionUs = C.UNSET_TIME_US;
isReady = false;
isEnded = false;
playingPeriod = null;
} else if (readingPeriod.isLast) {
readingPeriod = null;
loadingPeriod = null;
timeline = null;
bufferAheadPeriodCount = 0;
for (Renderer renderer : enabledRenderers) {
renderer.setCurrentStreamIsFinal();
}
}
}
private void releasePeriodsFrom(Period period) {
while (period != null) {
period.release();
period = period.nextPeriod;
public void handlePeriodPrepared(MediaPeriod period) throws ExoPlaybackException {
if (loadingPeriod == null || loadingPeriod.mediaPeriod != period) {
// Stale event.
return;
}
loadingPeriod.handlePrepared(loadingPeriod.startPositionUs, loadControl);
if (playingPeriod == null) {
// This is the first prepared period, so start playing it.
readingPeriod = loadingPeriod;
setPlayingPeriod(readingPeriod);
if (playbackInfo.startPositionUs == C.UNSET_TIME_US) {
// Update the playback info when seeking to a default position.
playbackInfo = new PlaybackInfo(playingPeriod.index);
playbackInfo.startPositionUs = playingPeriod.startPositionUs;
resetInternalPosition(playbackInfo.startPositionUs);
updatePlaybackPositions();
eventHandler.obtainMessage(MSG_POSITION_DISCONTINUITY, playbackInfo).sendToTarget();
}
updateTimelineState();
}
maybeContinueLoading();
}
private void setPlayingPeriod(Period period) throws ExoPlaybackException {
int enabledRendererCount = 0;
boolean[] rendererWasEnabledFlags = new boolean[renderers.length];
for (int i = 0; i < renderers.length; i++) {
Renderer renderer = renderers[i];
rendererWasEnabledFlags[i] = renderer.getState() != Renderer.STATE_DISABLED;
TrackSelection newSelection = period.trackSelections.get(i);
if (newSelection != null) {
// The renderer should be enabled when playing the new period.
enabledRendererCount++;
} else if (rendererWasEnabledFlags[i]) {
// The renderer should be disabled when playing the new period.
if (renderer == rendererMediaClockSource) {
// Sync standaloneMediaClock so that it can take over timing responsibilities.
standaloneMediaClock.setPositionUs(rendererMediaClock.getPositionUs());
rendererMediaClock = null;
rendererMediaClockSource = null;
}
ensureStopped(renderer);
renderer.disable();
}
public void handleContinueLoadingRequested(MediaPeriod period) {
if (loadingPeriod == null || loadingPeriod.mediaPeriod != period) {
return;
}
maybeContinueLoading();
}
private void maybeContinueLoading() {
long nextLoadPositionUs = loadingPeriod.mediaPeriod.getNextLoadPositionUs();
if (nextLoadPositionUs != C.END_OF_SOURCE_US) {
long positionUs = internalPositionUs - loadingPeriod.offsetUs;
long bufferedDurationUs = nextLoadPositionUs - positionUs;
boolean continueLoading = loadControl.shouldContinueLoading(bufferedDurationUs);
setIsLoading(continueLoading);
if (continueLoading) {
loadingPeriod.needsContinueLoading = false;
loadingPeriod.mediaPeriod.continueLoading(positionUs);
} else {
loadingPeriod.needsContinueLoading = true;
}
} else {
setIsLoading(false);
}
}
trackSelector.onSelectionActivated(period.trackSelectionData);
playingPeriod = period;
playingPeriodEndPositionUs = C.UNSET_TIME_US;
enableRenderers(rendererWasEnabledFlags, enabledRendererCount);
private void releasePeriodsFrom(Period period) {
while (period != null) {
period.release();
period = period.nextPeriod;
}
}
private void updateTimelineState() {
isReady = playingPeriodEndPositionUs == C.UNSET_TIME_US
|| internalPositionUs < playingPeriodEndPositionUs
|| (playingPeriod.nextPeriod != null && playingPeriod.nextPeriod.prepared);
isEnded = playingPeriod.isLast;
private void setPlayingPeriod(Period period) throws ExoPlaybackException {
int enabledRendererCount = 0;
boolean[] rendererWasEnabledFlags = new boolean[renderers.length];
for (int i = 0; i < renderers.length; i++) {
Renderer renderer = renderers[i];
rendererWasEnabledFlags[i] = renderer.getState() != Renderer.STATE_DISABLED;
TrackSelection newSelection = period.trackSelections.get(i);
if (newSelection != null) {
// The renderer should be enabled when playing the new period.
enabledRendererCount++;
} else if (rendererWasEnabledFlags[i]) {
// The renderer should be disabled when playing the new period.
if (renderer == rendererMediaClockSource) {
// Sync standaloneMediaClock so that it can take over timing responsibilities.
standaloneMediaClock.setPositionUs(rendererMediaClock.getPositionUs());
rendererMediaClock = null;
rendererMediaClockSource = null;
}
ensureStopped(renderer);
renderer.disable();
}
}
private void enableRenderers(boolean[] rendererWasEnabledFlags, int enabledRendererCount)
throws ExoPlaybackException {
enabledRenderers = new Renderer[enabledRendererCount];
enabledRendererCount = 0;
for (int i = 0; i < renderers.length; i++) {
Renderer renderer = renderers[i];
TrackSelection newSelection = playingPeriod.trackSelections.get(i);
if (newSelection != null) {
enabledRenderers[enabledRendererCount++] = renderer;
if (renderer.getState() == Renderer.STATE_DISABLED) {
// The renderer needs enabling with its new track selection.
boolean playing = playWhenReady && state == ExoPlayer.STATE_READY;
// Consider as joining only if the renderer was previously disabled.
boolean joining = !rendererWasEnabledFlags[i] && playing;
// Build an array of formats contained by the selection.
Format[] formats = new Format[newSelection.length()];
for (int j = 0; j < formats.length; j++) {
formats[j] = newSelection.getFormat(j);
}
// Enable the renderer.
renderer.enable(formats, playingPeriod.sampleStreams[i], internalPositionUs, joining,
playingPeriod.offsetUs);
MediaClock mediaClock = renderer.getMediaClock();
if (mediaClock != null) {
if (rendererMediaClock != null) {
throw ExoPlaybackException.createForUnexpected(
new IllegalStateException("Multiple renderer media clocks enabled."));
}
rendererMediaClock = mediaClock;
rendererMediaClockSource = renderer;
}
// Start the renderer if playing.
if (playing) {
renderer.start();
trackSelector.onSelectionActivated(period.trackSelectionData);
playingPeriod = period;
playingPeriodEndPositionUs = C.UNSET_TIME_US;
enableRenderers(rendererWasEnabledFlags, enabledRendererCount);
}
private void updateTimelineState() {
isTimelineReady = playingPeriodEndPositionUs == C.UNSET_TIME_US
|| internalPositionUs < playingPeriodEndPositionUs
|| (playingPeriod.nextPeriod != null && playingPeriod.nextPeriod.prepared);
isTimelineEnded = playingPeriod.isLast;
}
private void enableRenderers(boolean[] rendererWasEnabledFlags, int enabledRendererCount)
throws ExoPlaybackException {
enabledRenderers = new Renderer[enabledRendererCount];
enabledRendererCount = 0;
for (int i = 0; i < renderers.length; i++) {
Renderer renderer = renderers[i];
TrackSelection newSelection = playingPeriod.trackSelections.get(i);
if (newSelection != null) {
enabledRenderers[enabledRendererCount++] = renderer;
if (renderer.getState() == Renderer.STATE_DISABLED) {
// The renderer needs enabling with its new track selection.
boolean playing = playWhenReady && state == ExoPlayer.STATE_READY;
// Consider as joining only if the renderer was previously disabled.
boolean joining = !rendererWasEnabledFlags[i] && playing;
// Build an array of formats contained by the selection.
Format[] formats = new Format[newSelection.length()];
for (int j = 0; j < formats.length; j++) {
formats[j] = newSelection.getFormat(j);
}
// Enable the renderer.
renderer.enable(formats, playingPeriod.sampleStreams[i], internalPositionUs, joining,
playingPeriod.offsetUs);
MediaClock mediaClock = renderer.getMediaClock();
if (mediaClock != null) {
if (rendererMediaClock != null) {
throw ExoPlaybackException.createForUnexpected(
new IllegalStateException("Multiple renderer media clocks enabled."));
}
rendererMediaClock = mediaClock;
rendererMediaClockSource = renderer;
}
// Start the renderer if playing.
if (playing) {
renderer.start();
}
}
}
}
}
/**
......@@ -1220,8 +1180,8 @@ import java.util.ArrayList;
}
public boolean isFullyBuffered() {
return prepared && (!hasEnabledTracks
|| mediaPeriod.getBufferedPositionUs() == C.END_OF_SOURCE_US);
return prepared
&& (!hasEnabledTracks || mediaPeriod.getBufferedPositionUs() == C.END_OF_SOURCE_US);
}
public void handlePrepared(long positionUs, LoadControl loadControl)
......
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