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

Example 6 with DashSegmentIndex

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

the class DashMediaSource method getIntervalUntilNextManifestRefreshMs.

private static long getIntervalUntilNextManifestRefreshMs(DashManifest manifest, long nowUnixTimeMs) {
    int periodIndex = manifest.getPeriodCount() - 1;
    Period period = manifest.getPeriod(periodIndex);
    long periodStartUs = Util.msToUs(period.startMs);
    long periodDurationUs = manifest.getPeriodDurationUs(periodIndex);
    long nowUnixTimeUs = Util.msToUs(nowUnixTimeMs);
    long availabilityStartTimeUs = Util.msToUs(manifest.availabilityStartTimeMs);
    long intervalUs = Util.msToUs(DEFAULT_NOTIFY_MANIFEST_INTERVAL_MS);
    for (int i = 0; i < period.adaptationSets.size(); i++) {
        List<Representation> representations = period.adaptationSets.get(i).representations;
        if (representations.isEmpty()) {
            continue;
        }
        @Nullable DashSegmentIndex index = representations.get(0).getIndex();
        if (index != null) {
            long nextSegmentShiftUnixTimeUs = availabilityStartTimeUs + periodStartUs + index.getNextSegmentAvailableTimeUs(periodDurationUs, nowUnixTimeUs);
            long requiredIntervalUs = nextSegmentShiftUnixTimeUs - nowUnixTimeUs;
            // Avoid multiple refreshes within a very small amount of time.
            if (requiredIntervalUs < intervalUs - 100_000 || (requiredIntervalUs > intervalUs && requiredIntervalUs < intervalUs + 100_000)) {
                intervalUs = requiredIntervalUs;
            }
        }
    }
    // Round up to compensate for a potential loss in the us to ms conversion.
    return LongMath.divide(intervalUs, 1000, RoundingMode.CEILING);
}