Examples with BehindLiveWindowException androidx.media3.exoplayer.source.BehindLiveWindowException used on opensource projects

Example 1 with BehindLiveWindowException

use of androidx.media3.exoplayer.source.BehindLiveWindowException in project media by androidx.

the class DefaultDashChunkSource method getNextChunk.

@Override
public void getNextChunk(long playbackPositionUs, long loadPositionUs, List<? extends MediaChunk> queue, ChunkHolder out) {
    if (fatalError != null) {
        return;
    }
    long bufferedDurationUs = loadPositionUs - playbackPositionUs;
    long presentationPositionUs = Util.msToUs(manifest.availabilityStartTimeMs) + Util.msToUs(manifest.getPeriod(periodIndex).startMs) + loadPositionUs;
    if (playerTrackEmsgHandler != null && playerTrackEmsgHandler.maybeRefreshManifestBeforeLoadingNextChunk(presentationPositionUs)) {
        return;
    }
    long nowUnixTimeUs = Util.msToUs(Util.getNowUnixTimeMs(elapsedRealtimeOffsetMs));
    long nowPeriodTimeUs = getNowPeriodTimeUs(nowUnixTimeUs);
    MediaChunk previous = queue.isEmpty() ? null : queue.get(queue.size() - 1);
    MediaChunkIterator[] chunkIterators = new MediaChunkIterator[trackSelection.length()];
    for (int i = 0; i < chunkIterators.length; i++) {
        RepresentationHolder representationHolder = representationHolders[i];
        if (representationHolder.segmentIndex == null) {
            chunkIterators[i] = MediaChunkIterator.EMPTY;
        } else {
            long firstAvailableSegmentNum = representationHolder.getFirstAvailableSegmentNum(nowUnixTimeUs);
            long lastAvailableSegmentNum = representationHolder.getLastAvailableSegmentNum(nowUnixTimeUs);
            long segmentNum = getSegmentNum(representationHolder, previous, loadPositionUs, firstAvailableSegmentNum, lastAvailableSegmentNum);
            if (segmentNum < firstAvailableSegmentNum) {
                chunkIterators[i] = MediaChunkIterator.EMPTY;
            } else {
                representationHolder = updateSelectedBaseUrl(/* trackIndex= */
                i);
                chunkIterators[i] = new RepresentationSegmentIterator(representationHolder, segmentNum, lastAvailableSegmentNum, nowPeriodTimeUs);
            }
        }
    }
    long availableLiveDurationUs = getAvailableLiveDurationUs(nowUnixTimeUs, playbackPositionUs);
    trackSelection.updateSelectedTrack(playbackPositionUs, bufferedDurationUs, availableLiveDurationUs, queue, chunkIterators);
    RepresentationHolder representationHolder = updateSelectedBaseUrl(trackSelection.getSelectedIndex());
    if (representationHolder.chunkExtractor != null) {
        Representation selectedRepresentation = representationHolder.representation;
        @Nullable RangedUri pendingInitializationUri = null;
        @Nullable RangedUri pendingIndexUri = null;
        if (representationHolder.chunkExtractor.getSampleFormats() == null) {
            pendingInitializationUri = selectedRepresentation.getInitializationUri();
        }
        if (representationHolder.segmentIndex == null) {
            pendingIndexUri = selectedRepresentation.getIndexUri();
        }
        if (pendingInitializationUri != null || pendingIndexUri != null) {
            // We have initialization and/or index requests to make.
            out.chunk = newInitializationChunk(representationHolder, dataSource, trackSelection.getSelectedFormat(), trackSelection.getSelectionReason(), trackSelection.getSelectionData(), pendingInitializationUri, pendingIndexUri);
            return;
        }
    }
    long periodDurationUs = representationHolder.periodDurationUs;
    boolean periodEnded = periodDurationUs != C.TIME_UNSET;
    if (representationHolder.getSegmentCount() == 0) {
        // The index doesn't define any segments.
        out.endOfStream = periodEnded;
        return;
    }
    long firstAvailableSegmentNum = representationHolder.getFirstAvailableSegmentNum(nowUnixTimeUs);
    long lastAvailableSegmentNum = representationHolder.getLastAvailableSegmentNum(nowUnixTimeUs);
    long segmentNum = getSegmentNum(representationHolder, previous, loadPositionUs, firstAvailableSegmentNum, lastAvailableSegmentNum);
    if (segmentNum < firstAvailableSegmentNum) {
        // This is before the first chunk in the current manifest.
        fatalError = new BehindLiveWindowException();
        return;
    }
    if (segmentNum > lastAvailableSegmentNum || (missingLastSegment && segmentNum >= lastAvailableSegmentNum)) {
        // The segment is beyond the end of the period.
        out.endOfStream = periodEnded;
        return;
    }
    if (periodEnded && representationHolder.getSegmentStartTimeUs(segmentNum) >= periodDurationUs) {
        // The period duration clips the period to a position before the segment.
        out.endOfStream = true;
        return;
    }
    int maxSegmentCount = (int) min(maxSegmentsPerLoad, lastAvailableSegmentNum - segmentNum + 1);
    if (periodDurationUs != C.TIME_UNSET) {
        while (maxSegmentCount > 1 && representationHolder.getSegmentStartTimeUs(segmentNum + maxSegmentCount - 1) >= periodDurationUs) {
            // The period duration clips the period to a position before the last segment in the range
            // [segmentNum, segmentNum + maxSegmentCount - 1]. Reduce maxSegmentCount.
            maxSegmentCount--;
        }
    }
    long seekTimeUs = queue.isEmpty() ? loadPositionUs : C.TIME_UNSET;
    out.chunk = newMediaChunk(representationHolder, dataSource, trackType, trackSelection.getSelectedFormat(), trackSelection.getSelectionReason(), trackSelection.getSelectionData(), segmentNum, maxSegmentCount, seekTimeUs, nowPeriodTimeUs);
}

Example 2 with BehindLiveWindowException

use of androidx.media3.exoplayer.source.BehindLiveWindowException in project media by androidx.

the class DefaultSsChunkSource method getNextChunk.

@Override
public final void getNextChunk(long playbackPositionUs, long loadPositionUs, List<? extends MediaChunk> queue, ChunkHolder out) {
    if (fatalError != null) {
        return;
    }
    StreamElement streamElement = manifest.streamElements[streamElementIndex];
    if (streamElement.chunkCount == 0) {
        // There aren't any chunks for us to load.
        out.endOfStream = !manifest.isLive;
        return;
    }
    int chunkIndex;
    if (queue.isEmpty()) {
        chunkIndex = streamElement.getChunkIndex(loadPositionUs);
    } else {
        chunkIndex = (int) (queue.get(queue.size() - 1).getNextChunkIndex() - currentManifestChunkOffset);
        if (chunkIndex < 0) {
            // This is before the first chunk in the current manifest.
            fatalError = new BehindLiveWindowException();
            return;
        }
    }
    if (chunkIndex >= streamElement.chunkCount) {
        // This is beyond the last chunk in the current manifest.
        out.endOfStream = !manifest.isLive;
        return;
    }
    long bufferedDurationUs = loadPositionUs - playbackPositionUs;
    long timeToLiveEdgeUs = resolveTimeToLiveEdgeUs(playbackPositionUs);
    MediaChunkIterator[] chunkIterators = new MediaChunkIterator[trackSelection.length()];
    for (int i = 0; i < chunkIterators.length; i++) {
        int trackIndex = trackSelection.getIndexInTrackGroup(i);
        chunkIterators[i] = new StreamElementIterator(streamElement, trackIndex, chunkIndex);
    }
    trackSelection.updateSelectedTrack(playbackPositionUs, bufferedDurationUs, timeToLiveEdgeUs, queue, chunkIterators);
    long chunkStartTimeUs = streamElement.getStartTimeUs(chunkIndex);
    long chunkEndTimeUs = chunkStartTimeUs + streamElement.getChunkDurationUs(chunkIndex);
    long chunkSeekTimeUs = queue.isEmpty() ? loadPositionUs : C.TIME_UNSET;
    int currentAbsoluteChunkIndex = chunkIndex + currentManifestChunkOffset;
    int trackSelectionIndex = trackSelection.getSelectedIndex();
    ChunkExtractor chunkExtractor = chunkExtractors[trackSelectionIndex];
    int manifestTrackIndex = trackSelection.getIndexInTrackGroup(trackSelectionIndex);
    Uri uri = streamElement.buildRequestUri(manifestTrackIndex, chunkIndex);
    out.chunk = newMediaChunk(trackSelection.getSelectedFormat(), dataSource, uri, currentAbsoluteChunkIndex, chunkStartTimeUs, chunkEndTimeUs, chunkSeekTimeUs, trackSelection.getSelectionReason(), trackSelection.getSelectionData(), chunkExtractor);
}

Example 3 with BehindLiveWindowException

use of androidx.media3.exoplayer.source.BehindLiveWindowException in project media by androidx.

the class HlsChunkSource method getNextChunk.

/**
 * Returns the next chunk to load.
 *
 * <p>If a chunk is available then {@link HlsChunkHolder#chunk} is set. If the end of the stream
 * has been reached then {@link HlsChunkHolder#endOfStream} is set. If a chunk is not available
 * but the end of the stream has not been reached, {@link HlsChunkHolder#playlistUrl} is set to
 * contain the {@link Uri} that refers to the playlist that needs refreshing.
 *
 * @param playbackPositionUs The current playback position relative to the period start in
 *     microseconds. If playback of the period to which this chunk source belongs has not yet
 *     started, the value will be the starting position in the period minus the duration of any
 *     media in previous periods still to be played.
 * @param loadPositionUs The current load position relative to the period start in microseconds.
 * @param queue The queue of buffered {@link HlsMediaChunk}s.
 * @param allowEndOfStream Whether {@link HlsChunkHolder#endOfStream} is allowed to be set for
 *     non-empty media playlists. If {@code false}, the last available chunk is returned instead.
 *     If the media playlist is empty, {@link HlsChunkHolder#endOfStream} is always set.
 * @param out A holder to populate.
 */
public void getNextChunk(long playbackPositionUs, long loadPositionUs, List<HlsMediaChunk> queue, boolean allowEndOfStream, HlsChunkHolder out) {
    @Nullable HlsMediaChunk previous = queue.isEmpty() ? null : Iterables.getLast(queue);
    int oldTrackIndex = previous == null ? C.INDEX_UNSET : trackGroup.indexOf(previous.trackFormat);
    long bufferedDurationUs = loadPositionUs - playbackPositionUs;
    long timeToLiveEdgeUs = resolveTimeToLiveEdgeUs(playbackPositionUs);
    if (previous != null && !independentSegments) {
        // Unless segments are known to be independent, switching tracks requires downloading
        // overlapping segments. Hence we subtract the previous segment's duration from the buffered
        // duration.
        // This may affect the live-streaming adaptive track selection logic, when we compare the
        // buffered duration to time-to-live-edge to decide whether to switch. Therefore, we subtract
        // the duration of the last loaded segment from timeToLiveEdgeUs as well.
        long subtractedDurationUs = previous.getDurationUs();
        bufferedDurationUs = max(0, bufferedDurationUs - subtractedDurationUs);
        if (timeToLiveEdgeUs != C.TIME_UNSET) {
            timeToLiveEdgeUs = max(0, timeToLiveEdgeUs - subtractedDurationUs);
        }
    }
    // Select the track.
    MediaChunkIterator[] mediaChunkIterators = createMediaChunkIterators(previous, loadPositionUs);
    trackSelection.updateSelectedTrack(playbackPositionUs, bufferedDurationUs, timeToLiveEdgeUs, queue, mediaChunkIterators);
    int selectedTrackIndex = trackSelection.getSelectedIndexInTrackGroup();
    boolean switchingTrack = oldTrackIndex != selectedTrackIndex;
    Uri selectedPlaylistUrl = playlistUrls[selectedTrackIndex];
    if (!playlistTracker.isSnapshotValid(selectedPlaylistUrl)) {
        out.playlistUrl = selectedPlaylistUrl;
        seenExpectedPlaylistError &= selectedPlaylistUrl.equals(expectedPlaylistUrl);
        expectedPlaylistUrl = selectedPlaylistUrl;
        // Retry when playlist is refreshed.
        return;
    }
    @Nullable HlsMediaPlaylist playlist = playlistTracker.getPlaylistSnapshot(selectedPlaylistUrl, /* isForPlayback= */
    true);
    // playlistTracker snapshot is valid (checked by if() above), so playlist must be non-null.
    checkNotNull(playlist);
    independentSegments = playlist.hasIndependentSegments;
    updateLiveEdgeTimeUs(playlist);
    // Select the chunk.
    long startOfPlaylistInPeriodUs = playlist.startTimeUs - playlistTracker.getInitialStartTimeUs();
    Pair<Long, Integer> nextMediaSequenceAndPartIndex = getNextMediaSequenceAndPartIndex(previous, switchingTrack, playlist, startOfPlaylistInPeriodUs, loadPositionUs);
    long chunkMediaSequence = nextMediaSequenceAndPartIndex.first;
    int partIndex = nextMediaSequenceAndPartIndex.second;
    if (chunkMediaSequence < playlist.mediaSequence && previous != null && switchingTrack) {
        // We try getting the next chunk without adapting in case that's the reason for falling
        // behind the live window.
        selectedTrackIndex = oldTrackIndex;
        selectedPlaylistUrl = playlistUrls[selectedTrackIndex];
        playlist = playlistTracker.getPlaylistSnapshot(selectedPlaylistUrl, /* isForPlayback= */
        true);
        // playlistTracker snapshot is valid (checked by if() above), so playlist must be non-null.
        checkNotNull(playlist);
        startOfPlaylistInPeriodUs = playlist.startTimeUs - playlistTracker.getInitialStartTimeUs();
        // Get the next segment/part without switching tracks.
        Pair<Long, Integer> nextMediaSequenceAndPartIndexWithoutAdapting = getNextMediaSequenceAndPartIndex(previous, /* switchingTrack= */
        false, playlist, startOfPlaylistInPeriodUs, loadPositionUs);
        chunkMediaSequence = nextMediaSequenceAndPartIndexWithoutAdapting.first;
        partIndex = nextMediaSequenceAndPartIndexWithoutAdapting.second;
    }
    if (chunkMediaSequence < playlist.mediaSequence) {
        fatalError = new BehindLiveWindowException();
        return;
    }
    @Nullable SegmentBaseHolder segmentBaseHolder = getNextSegmentHolder(playlist, chunkMediaSequence, partIndex);
    if (segmentBaseHolder == null) {
        if (!playlist.hasEndTag) {
            // Reload the playlist in case of a live stream.
            out.playlistUrl = selectedPlaylistUrl;
            seenExpectedPlaylistError &= selectedPlaylistUrl.equals(expectedPlaylistUrl);
            expectedPlaylistUrl = selectedPlaylistUrl;
            return;
        } else if (allowEndOfStream || playlist.segments.isEmpty()) {
            out.endOfStream = true;
            return;
        }
        // Use the last segment available in case of a VOD stream.
        segmentBaseHolder = new SegmentBaseHolder(Iterables.getLast(playlist.segments), playlist.mediaSequence + playlist.segments.size() - 1, /* partIndex= */
        C.INDEX_UNSET);
    }
    // We have a valid media segment, we can discard any playlist errors at this point.
    seenExpectedPlaylistError = false;
    expectedPlaylistUrl = null;
    // Check if the media segment or its initialization segment are fully encrypted.
    @Nullable Uri initSegmentKeyUri = getFullEncryptionKeyUri(playlist, segmentBaseHolder.segmentBase.initializationSegment);
    out.chunk = maybeCreateEncryptionChunkFor(initSegmentKeyUri, selectedTrackIndex);
    if (out.chunk != null) {
        return;
    }
    @Nullable Uri mediaSegmentKeyUri = getFullEncryptionKeyUri(playlist, segmentBaseHolder.segmentBase);
    out.chunk = maybeCreateEncryptionChunkFor(mediaSegmentKeyUri, selectedTrackIndex);
    if (out.chunk != null) {
        return;
    }
    boolean shouldSpliceIn = HlsMediaChunk.shouldSpliceIn(previous, selectedPlaylistUrl, playlist, segmentBaseHolder, startOfPlaylistInPeriodUs);
    if (shouldSpliceIn && segmentBaseHolder.isPreload) {
        // becomes fully available (or the track selection selects another track).
        return;
    }
    out.chunk = HlsMediaChunk.createInstance(extractorFactory, mediaDataSource, playlistFormats[selectedTrackIndex], startOfPlaylistInPeriodUs, playlist, segmentBaseHolder, selectedPlaylistUrl, muxedCaptionFormats, trackSelection.getSelectionReason(), trackSelection.getSelectionData(), isTimestampMaster, timestampAdjusterProvider, previous, /* mediaSegmentKey= */
    keyCache.get(mediaSegmentKeyUri), /* initSegmentKey= */
    keyCache.get(initSegmentKeyUri), shouldSpliceIn, playerId);
}

Example 4 with BehindLiveWindowException

use of androidx.media3.exoplayer.source.BehindLiveWindowException in project media by androidx.

the class DefaultDashChunkSource method updateManifest.

@Override
public void updateManifest(DashManifest newManifest, int newPeriodIndex) {
    try {
        manifest = newManifest;
        periodIndex = newPeriodIndex;
        long periodDurationUs = manifest.getPeriodDurationUs(periodIndex);
        List<Representation> representations = getRepresentations();
        for (int i = 0; i < representationHolders.length; i++) {
            Representation representation = representations.get(trackSelection.getIndexInTrackGroup(i));
            representationHolders[i] = representationHolders[i].copyWithNewRepresentation(periodDurationUs, representation);
        }
    } catch (BehindLiveWindowException e) {
        fatalError = e;
    }
}