Examples with DashSegmentIndex com.google.android.exoplayer2.source.dash.DashSegmentIndex used on opensource projects

Example 1 with DashSegmentIndex

use of com.google.android.exoplayer2.source.dash.DashSegmentIndex in project ExoPlayer by google.

the class DefaultDashChunkSource method getNextChunk.

@Override
public final void getNextChunk(MediaChunk previous, long playbackPositionUs, ChunkHolder out) {
    if (fatalError != null) {
        return;
    }
    long bufferedDurationUs = previous != null ? (previous.endTimeUs - playbackPositionUs) : 0;
    trackSelection.updateSelectedTrack(bufferedDurationUs);
    RepresentationHolder representationHolder = representationHolders[trackSelection.getSelectedIndex()];
    Representation selectedRepresentation = representationHolder.representation;
    DashSegmentIndex segmentIndex = representationHolder.segmentIndex;
    RangedUri pendingInitializationUri = null;
    RangedUri pendingIndexUri = null;
    if (representationHolder.extractorWrapper.getSampleFormats() == null) {
        pendingInitializationUri = selectedRepresentation.getInitializationUri();
    }
    if (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 nowUs = getNowUnixTimeUs();
    int availableSegmentCount = representationHolder.getSegmentCount();
    if (availableSegmentCount == 0) {
        // The index doesn't define any segments.
        out.endOfStream = !manifest.dynamic || (periodIndex < manifest.getPeriodCount() - 1);
        return;
    }
    int firstAvailableSegmentNum = representationHolder.getFirstSegmentNum();
    int lastAvailableSegmentNum;
    if (availableSegmentCount == DashSegmentIndex.INDEX_UNBOUNDED) {
        // The index is itself unbounded. We need to use the current time to calculate the range of
        // available segments.
        long liveEdgeTimeUs = nowUs - manifest.availabilityStartTime * 1000;
        long periodStartUs = manifest.getPeriod(periodIndex).startMs * 1000;
        long liveEdgeTimeInPeriodUs = liveEdgeTimeUs - periodStartUs;
        if (manifest.timeShiftBufferDepth != C.TIME_UNSET) {
            long bufferDepthUs = manifest.timeShiftBufferDepth * 1000;
            firstAvailableSegmentNum = Math.max(firstAvailableSegmentNum, representationHolder.getSegmentNum(liveEdgeTimeInPeriodUs - bufferDepthUs));
        }
        // getSegmentNum(liveEdgeTimestampUs) will not be completed yet, so subtract one to get the
        // index of the last completed segment.
        lastAvailableSegmentNum = representationHolder.getSegmentNum(liveEdgeTimeInPeriodUs) - 1;
    } else {
        lastAvailableSegmentNum = firstAvailableSegmentNum + availableSegmentCount - 1;
    }
    int segmentNum;
    if (previous == null) {
        segmentNum = Util.constrainValue(representationHolder.getSegmentNum(playbackPositionUs), firstAvailableSegmentNum, lastAvailableSegmentNum);
    } else {
        segmentNum = previous.getNextChunkIndex();
        if (segmentNum < firstAvailableSegmentNum) {
            // This is before the first chunk in the current manifest.
            fatalError = new BehindLiveWindowException();
            return;
        }
    }
    if (segmentNum > lastAvailableSegmentNum || (missingLastSegment && segmentNum >= lastAvailableSegmentNum)) {
        // This is beyond the last chunk in the current manifest.
        out.endOfStream = !manifest.dynamic || (periodIndex < manifest.getPeriodCount() - 1);
        return;
    }
    int maxSegmentCount = Math.min(maxSegmentsPerLoad, lastAvailableSegmentNum - segmentNum + 1);
    out.chunk = newMediaChunk(representationHolder, dataSource, trackSelection.getSelectedFormat(), trackSelection.getSelectionReason(), trackSelection.getSelectionData(), segmentNum, maxSegmentCount);
}

Example 2 with DashSegmentIndex

use of com.google.android.exoplayer2.source.dash.DashSegmentIndex in project ExoPlayer by google.

the class DashMediaSource method getAvailableStartTimeInManifestUs.

private static long getAvailableStartTimeInManifestUs(Period period, long periodDurationUs, long nowUnixTimeUs) {
    long periodStartTimeInManifestUs = Util.msToUs(period.startMs);
    long availableStartTimeInManifestUs = periodStartTimeInManifestUs;
    boolean haveAudioVideoAdaptationSets = hasVideoOrAudioAdaptationSets(period);
    for (int i = 0; i < period.adaptationSets.size(); i++) {
        AdaptationSet adaptationSet = period.adaptationSets.get(i);
        List<Representation> representations = adaptationSet.representations;
        // or video adaptation set. See: https://github.com/google/ExoPlayer/issues/4029
        if ((haveAudioVideoAdaptationSets && adaptationSet.type == C.TRACK_TYPE_TEXT) || representations.isEmpty()) {
            continue;
        }
        @Nullable DashSegmentIndex index = representations.get(0).getIndex();
        if (index == null) {
            return periodStartTimeInManifestUs;
        }
        long availableSegmentCount = index.getAvailableSegmentCount(periodDurationUs, nowUnixTimeUs);
        if (availableSegmentCount == 0) {
            return periodStartTimeInManifestUs;
        }
        long firstAvailableSegmentNum = index.getFirstAvailableSegmentNum(periodDurationUs, nowUnixTimeUs);
        long adaptationSetAvailableStartTimeInManifestUs = periodStartTimeInManifestUs + index.getTimeUs(firstAvailableSegmentNum);
        availableStartTimeInManifestUs = max(availableStartTimeInManifestUs, adaptationSetAvailableStartTimeInManifestUs);
    }
    return availableStartTimeInManifestUs;
}

Example 3 with DashSegmentIndex

use of com.google.android.exoplayer2.source.dash.DashSegmentIndex 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 4 with DashSegmentIndex

use of com.google.android.exoplayer2.source.dash.DashSegmentIndex in project ExoPlayer by google.

the class DashMediaSource method getAvailableEndTimeInManifestUs.

private static long getAvailableEndTimeInManifestUs(Period period, long periodDurationUs, long nowUnixTimeUs) {
    long periodStartTimeInManifestUs = Util.msToUs(period.startMs);
    long availableEndTimeInManifestUs = Long.MAX_VALUE;
    boolean haveAudioVideoAdaptationSets = hasVideoOrAudioAdaptationSets(period);
    for (int i = 0; i < period.adaptationSets.size(); i++) {
        AdaptationSet adaptationSet = period.adaptationSets.get(i);
        List<Representation> representations = adaptationSet.representations;
        // or video adaptation set. See: https://github.com/google/ExoPlayer/issues/4029
        if ((haveAudioVideoAdaptationSets && adaptationSet.type == C.TRACK_TYPE_TEXT) || representations.isEmpty()) {
            continue;
        }
        @Nullable DashSegmentIndex index = representations.get(0).getIndex();
        if (index == null) {
            return periodStartTimeInManifestUs + periodDurationUs;
        }
        long availableSegmentCount = index.getAvailableSegmentCount(periodDurationUs, nowUnixTimeUs);
        if (availableSegmentCount == 0) {
            return periodStartTimeInManifestUs;
        }
        long firstAvailableSegmentNum = index.getFirstAvailableSegmentNum(periodDurationUs, nowUnixTimeUs);
        long lastAvailableSegmentNum = firstAvailableSegmentNum + availableSegmentCount - 1;
        long adaptationSetAvailableEndTimeInManifestUs = periodStartTimeInManifestUs + index.getTimeUs(lastAvailableSegmentNum) + index.getDurationUs(lastAvailableSegmentNum, periodDurationUs);
        availableEndTimeInManifestUs = min(availableEndTimeInManifestUs, adaptationSetAvailableEndTimeInManifestUs);
    }
    return availableEndTimeInManifestUs;
}

Example 5 with DashSegmentIndex

use of com.google.android.exoplayer2.source.dash.DashSegmentIndex in project ExoPlayer by google.

the class DashDownloader method addSegmentsForAdaptationSet.

private void addSegmentsForAdaptationSet(DataSource dataSource, AdaptationSet adaptationSet, long periodStartUs, long periodDurationUs, boolean removing, ArrayList<Segment> out) throws IOException, InterruptedException {
    for (int i = 0; i < adaptationSet.representations.size(); i++) {
        Representation representation = adaptationSet.representations.get(i);
        DashSegmentIndex index;
        try {
            index = getSegmentIndex(dataSource, adaptationSet.type, representation, removing);
            if (index == null) {
                // Loading succeeded but there was no index.
                throw new DownloadException("Missing segment index");
            }
        } catch (IOException e) {
            if (!removing) {
                throw e;
            }
            // Generating an incomplete segment list is allowed. Advance to the next representation.
            continue;
        }
        long segmentCount = index.getSegmentCount(periodDurationUs);
        if (segmentCount == DashSegmentIndex.INDEX_UNBOUNDED) {
            throw new DownloadException("Unbounded segment index");
        }
        String baseUrl = castNonNull(baseUrlExclusionList.selectBaseUrl(representation.baseUrls)).url;
        @Nullable RangedUri initializationUri = representation.getInitializationUri();
        if (initializationUri != null) {
            out.add(createSegment(representation, baseUrl, periodStartUs, initializationUri));
        }
        @Nullable RangedUri indexUri = representation.getIndexUri();
        if (indexUri != null) {
            out.add(createSegment(representation, baseUrl, periodStartUs, indexUri));
        }
        long firstSegmentNum = index.getFirstSegmentNum();
        long lastSegmentNum = firstSegmentNum + segmentCount - 1;
        for (long j = firstSegmentNum; j <= lastSegmentNum; j++) {
            out.add(createSegment(representation, baseUrl, periodStartUs + index.getTimeUs(j), index.getSegmentUrl(j)));
        }
    }
}