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

Example 1 with EmptySampleStream

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

the class DashMediaPeriod method selectNewStreams.

private void selectNewStreams(ExoTrackSelection[] selections, SampleStream[] streams, boolean[] streamResetFlags, long positionUs, int[] streamIndexToTrackGroupIndex) {
    // Create newly selected primary and event streams.
    for (int i = 0; i < selections.length; i++) {
        ExoTrackSelection selection = selections[i];
        if (selection == null) {
            continue;
        }
        if (streams[i] == null) {
            // Create new stream for selection.
            streamResetFlags[i] = true;
            int trackGroupIndex = streamIndexToTrackGroupIndex[i];
            TrackGroupInfo trackGroupInfo = trackGroupInfos[trackGroupIndex];
            if (trackGroupInfo.trackGroupCategory == TrackGroupInfo.CATEGORY_PRIMARY) {
                streams[i] = buildSampleStream(trackGroupInfo, selection, positionUs);
            } else if (trackGroupInfo.trackGroupCategory == TrackGroupInfo.CATEGORY_MANIFEST_EVENTS) {
                EventStream eventStream = eventStreams.get(trackGroupInfo.eventStreamGroupIndex);
                Format format = selection.getTrackGroup().getFormat(0);
                streams[i] = new EventSampleStream(eventStream, format, manifest.dynamic);
            }
        } else if (streams[i] instanceof ChunkSampleStream) {
            // Update selection in existing stream.
            @SuppressWarnings("unchecked") ChunkSampleStream<DashChunkSource> stream = (ChunkSampleStream<DashChunkSource>) streams[i];
            stream.getChunkSource().updateTrackSelection(selection);
        }
    }
    // pass if the index of the primary stream is greater than the index of the embedded stream.
    for (int i = 0; i < selections.length; i++) {
        if (streams[i] == null && selections[i] != null) {
            int trackGroupIndex = streamIndexToTrackGroupIndex[i];
            TrackGroupInfo trackGroupInfo = trackGroupInfos[trackGroupIndex];
            if (trackGroupInfo.trackGroupCategory == TrackGroupInfo.CATEGORY_EMBEDDED) {
                int primaryStreamIndex = getPrimaryStreamIndex(i, streamIndexToTrackGroupIndex);
                if (primaryStreamIndex == C.INDEX_UNSET) {
                    // If an embedded track is selected without the corresponding primary track, create an
                    // empty sample stream instead.
                    streams[i] = new EmptySampleStream();
                } else {
                    streams[i] = ((ChunkSampleStream) streams[primaryStreamIndex]).selectEmbeddedTrack(positionUs, trackGroupInfo.trackType);
                }
            }
        }
    }
}