Examples with ChunkIndex androidx.media3.extractor.ChunkIndex used on opensource projects

Example 1 with ChunkIndex

use of androidx.media3.extractor.ChunkIndex in project ExoPlayer by google.

the class DashDownloader method getSegmentIndex.

@Nullable
private DashSegmentIndex getSegmentIndex(DataSource dataSource, int trackType, Representation representation, boolean removing) throws IOException, InterruptedException {
    DashSegmentIndex index = representation.getIndex();
    if (index != null) {
        return index;
    }
    RunnableFutureTask<@NullableType ChunkIndex, IOException> runnable = new RunnableFutureTask<@NullableType ChunkIndex, IOException>() {

        @Override
        @NullableType
        protected ChunkIndex doWork() throws IOException {
            return DashUtil.loadChunkIndex(dataSource, trackType, representation);
        }
    };
    @Nullable ChunkIndex seekMap = execute(runnable, removing);
    return seekMap == null ? null : new DashWrappingSegmentIndex(seekMap, representation.presentationTimeOffsetUs);
}

Example 2 with ChunkIndex

use of androidx.media3.extractor.ChunkIndex in project media by androidx.

the class DefaultDashChunkSource method onChunkLoadCompleted.

@Override
public void onChunkLoadCompleted(Chunk chunk) {
    if (chunk instanceof InitializationChunk) {
        InitializationChunk initializationChunk = (InitializationChunk) chunk;
        int trackIndex = trackSelection.indexOf(initializationChunk.trackFormat);
        RepresentationHolder representationHolder = representationHolders[trackIndex];
        // where it does we should ignore it.
        if (representationHolder.segmentIndex == null) {
            @Nullable ChunkIndex chunkIndex = representationHolder.chunkExtractor.getChunkIndex();
            if (chunkIndex != null) {
                representationHolders[trackIndex] = representationHolder.copyWithNewSegmentIndex(new DashWrappingSegmentIndex(chunkIndex, representationHolder.representation.presentationTimeOffsetUs));
            }
        }
    }
    if (playerTrackEmsgHandler != null) {
        playerTrackEmsgHandler.onChunkLoadCompleted(chunk);
    }
}

Example 3 with ChunkIndex

use of androidx.media3.extractor.ChunkIndex in project media by androidx.

the class HlsSampleStreamWrapper method selectTracks.

/**
 * Called by the parent {@link HlsMediaPeriod} when a track selection occurs.
 *
 * @param selections The renderer track selections.
 * @param mayRetainStreamFlags Flags indicating whether the existing sample stream can be retained
 *     for each selection. A {@code true} value indicates that the selection is unchanged, and
 *     that the caller does not require that the sample stream be recreated.
 * @param streams The existing sample streams, which will be updated to reflect the provided
 *     selections.
 * @param streamResetFlags Will be updated to indicate new sample streams, and sample streams that
 *     have been retained but with the requirement that the consuming renderer be reset.
 * @param positionUs The current playback position in microseconds.
 * @param forceReset If true then a reset is forced (i.e. a seek will be performed with in-buffer
 *     seeking disabled).
 * @return Whether this wrapper requires the parent {@link HlsMediaPeriod} to perform a seek as
 *     part of the track selection.
 */
public boolean selectTracks(@NullableType ExoTrackSelection[] selections, boolean[] mayRetainStreamFlags, @NullableType SampleStream[] streams, boolean[] streamResetFlags, long positionUs, boolean forceReset) {
    assertIsPrepared();
    int oldEnabledTrackGroupCount = enabledTrackGroupCount;
    // Deselect old tracks.
    for (int i = 0; i < selections.length; i++) {
        HlsSampleStream stream = (HlsSampleStream) streams[i];
        if (stream != null && (selections[i] == null || !mayRetainStreamFlags[i])) {
            enabledTrackGroupCount--;
            stream.unbindSampleQueue();
            streams[i] = null;
        }
    }
    // We'll always need to seek if we're being forced to reset, or if this is a first selection to
    // a position other than the one we started preparing with, or if we're making a selection
    // having previously disabled all tracks.
    boolean seekRequired = forceReset || (seenFirstTrackSelection ? oldEnabledTrackGroupCount == 0 : positionUs != lastSeekPositionUs);
    // Get the old (i.e. current before the loop below executes) primary track selection. The new
    // primary selection will equal the old one unless it's changed in the loop.
    ExoTrackSelection oldPrimaryTrackSelection = chunkSource.getTrackSelection();
    ExoTrackSelection primaryTrackSelection = oldPrimaryTrackSelection;
    // Select new tracks.
    for (int i = 0; i < selections.length; i++) {
        ExoTrackSelection selection = selections[i];
        if (selection == null) {
            continue;
        }
        int trackGroupIndex = trackGroups.indexOf(selection.getTrackGroup());
        if (trackGroupIndex == primaryTrackGroupIndex) {
            primaryTrackSelection = selection;
            chunkSource.setTrackSelection(selection);
        }
        if (streams[i] == null) {
            enabledTrackGroupCount++;
            streams[i] = new HlsSampleStream(this, trackGroupIndex);
            streamResetFlags[i] = true;
            if (trackGroupToSampleQueueIndex != null) {
                ((HlsSampleStream) streams[i]).bindSampleQueue();
                // If there's still a chance of avoiding a seek, try and seek within the sample queue.
                if (!seekRequired) {
                    SampleQueue sampleQueue = sampleQueues[trackGroupToSampleQueueIndex[trackGroupIndex]];
                    // A seek can be avoided if we're able to seek to the current playback position in
                    // the sample queue, or if we haven't read anything from the queue since the previous
                    // seek (this case is common for sparse tracks such as metadata tracks). In all other
                    // cases a seek is required.
                    seekRequired = !sampleQueue.seekTo(positionUs, /* allowTimeBeyondBuffer= */
                    true) && sampleQueue.getReadIndex() != 0;
                }
            }
        }
    }
    if (enabledTrackGroupCount == 0) {
        chunkSource.reset();
        downstreamTrackFormat = null;
        pendingResetUpstreamFormats = true;
        mediaChunks.clear();
        if (loader.isLoading()) {
            if (sampleQueuesBuilt) {
                // Discard as much as we can synchronously.
                for (SampleQueue sampleQueue : sampleQueues) {
                    sampleQueue.discardToEnd();
                }
            }
            loader.cancelLoading();
        } else {
            resetSampleQueues();
        }
    } else {
        if (!mediaChunks.isEmpty() && !Util.areEqual(primaryTrackSelection, oldPrimaryTrackSelection)) {
            // The primary track selection has changed and we have buffered media. The buffered media
            // may need to be discarded.
            boolean primarySampleQueueDirty = false;
            if (!seenFirstTrackSelection) {
                long bufferedDurationUs = positionUs < 0 ? -positionUs : 0;
                HlsMediaChunk lastMediaChunk = getLastMediaChunk();
                MediaChunkIterator[] mediaChunkIterators = chunkSource.createMediaChunkIterators(lastMediaChunk, positionUs);
                primaryTrackSelection.updateSelectedTrack(positionUs, bufferedDurationUs, C.TIME_UNSET, readOnlyMediaChunks, mediaChunkIterators);
                int chunkIndex = chunkSource.getTrackGroup().indexOf(lastMediaChunk.trackFormat);
                if (primaryTrackSelection.getSelectedIndexInTrackGroup() != chunkIndex) {
                    // This is the first selection and the chunk loaded during preparation does not match
                    // the initially selected format.
                    primarySampleQueueDirty = true;
                }
            } else {
                // The primary sample queue contains media buffered for the old primary track selection.
                primarySampleQueueDirty = true;
            }
            if (primarySampleQueueDirty) {
                forceReset = true;
                seekRequired = true;
                pendingResetUpstreamFormats = true;
            }
        }
        if (seekRequired) {
            seekToUs(positionUs, forceReset);
            // We'll need to reset renderers consuming from all streams due to the seek.
            for (int i = 0; i < streams.length; i++) {
                if (streams[i] != null) {
                    streamResetFlags[i] = true;
                }
            }
        }
    }
    updateSampleStreams(streams);
    seenFirstTrackSelection = true;
    return seekRequired;
}

Example 4 with ChunkIndex

use of androidx.media3.extractor.ChunkIndex in project media by androidx.

the class DefaultSsChunkSource method newMediaChunk.

// Private methods.
private static MediaChunk newMediaChunk(Format format, DataSource dataSource, Uri uri, int chunkIndex, long chunkStartTimeUs, long chunkEndTimeUs, long chunkSeekTimeUs, @C.SelectionReason int trackSelectionReason, @Nullable Object trackSelectionData, ChunkExtractor chunkExtractor) {
    DataSpec dataSpec = new DataSpec(uri);
    // In SmoothStreaming each chunk contains sample timestamps relative to the start of the chunk.
    // To convert them the absolute timestamps, we need to set sampleOffsetUs to chunkStartTimeUs.
    long sampleOffsetUs = chunkStartTimeUs;
    return new ContainerMediaChunk(dataSource, dataSpec, format, trackSelectionReason, trackSelectionData, chunkStartTimeUs, chunkEndTimeUs, chunkSeekTimeUs, /* clippedEndTimeUs= */
    C.TIME_UNSET, chunkIndex, /* chunkCount= */
    1, sampleOffsetUs, chunkExtractor);
}

Example 5 with ChunkIndex

use of androidx.media3.extractor.ChunkIndex 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);
}