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Use HLS rendition report when changing primary playlist

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Issue: #5011
PiperOrigin-RevId: 345440697
This commit is contained in:
bachinger 2020-12-03 14:50:47 +00:00 committed by Oliver Woodman
parent 0278949262
commit 3b7aa1d5f1
1 changed files with 28 additions and 5 deletions
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33
library/hls/src/main/java/com/google/android/exoplayer2/source/hls/playlist/DefaultHlsPlaylistTracker.java
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@ -31,6 +31,7 @@ import com.google.android.exoplayer2.source.MediaSourceEventListener.EventDispat
import com.google.android.exoplayer2.source.hls.HlsDataSourceFactory;
import com.google.android.exoplayer2.source.hls.playlist.HlsMasterPlaylist.Variant;
import com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist.Part;
import com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist.RenditionReport;
import com.google.android.exoplayer2.source.hls.playlist.HlsMediaPlaylist.Segment;
import com.google.android.exoplayer2.upstream.DataSource;
import com.google.android.exoplayer2.upstream.HttpDataSource;
@ -186,7 +187,7 @@ public final class DefaultHlsPlaylistTracker
@Override
@Nullable
public HlsMediaPlaylist getPlaylistSnapshot(Uri url, boolean isForPlayback) {
HlsMediaPlaylist snapshot = playlistBundles.get(url).getPlaylistSnapshot();
@Nullable HlsMediaPlaylist snapshot = playlistBundles.get(url).getPlaylistSnapshot();
if (snapshot != null && isForPlayback) {
maybeSetPrimaryUrl(url);
}
@ -321,10 +322,10 @@ public final class DefaultHlsPlaylistTracker
int variantsSize = variants.size();
long currentTimeMs = SystemClock.elapsedRealtime();
for (int i = 0; i < variantsSize; i++) {
MediaPlaylistBundle bundle = playlistBundles.get(variants.get(i).url);
MediaPlaylistBundle bundle = checkNotNull(playlistBundles.get(variants.get(i).url));
if (currentTimeMs > bundle.excludeUntilMs) {
primaryMediaPlaylistUrl = bundle.playlistUrl;
bundle.loadPlaylist();
bundle.loadPlaylistInternal(getRequestUriForPrimaryChange(primaryMediaPlaylistUrl));
return true;
}
}
@ -340,7 +341,29 @@ public final class DefaultHlsPlaylistTracker
return;
}
primaryMediaPlaylistUrl = url;
playlistBundles.get(primaryMediaPlaylistUrl).loadPlaylist();
playlistBundles
.get(primaryMediaPlaylistUrl)
.loadPlaylistInternal(getRequestUriForPrimaryChange(url));
}
private Uri getRequestUriForPrimaryChange(Uri newPrimaryPlaylistUri) {
if (primaryMediaPlaylistSnapshot != null
&& primaryMediaPlaylistSnapshot.serverControl.canBlockReload) {
@Nullable
RenditionReport renditionReport =
primaryMediaPlaylistSnapshot.renditionReports.get(newPrimaryPlaylistUri);
if (renditionReport != null) {
Uri.Builder uriBuilder = newPrimaryPlaylistUri.buildUpon();
uriBuilder.appendQueryParameter(
MediaPlaylistBundle.BLOCK_MSN_PARAM, String.valueOf(renditionReport.lastMediaSequence));
if (renditionReport.lastPartIndex != C.INDEX_UNSET) {
uriBuilder.appendQueryParameter(
MediaPlaylistBundle.BLOCK_PART_PARAM, String.valueOf(renditionReport.lastPartIndex));
}
return uriBuilder.build();
}
}
return newPrimaryPlaylistUri;
}
/** Returns whether any of the variants in the master playlist have the specified playlist URL. */
@ -627,7 +650,7 @@ public final class DefaultHlsPlaylistTracker
// Internal methods.
public void loadPlaylistInternal(Uri playlistRequestUri) {
private void loadPlaylistInternal(Uri playlistRequestUri) {
excludeUntilMs = 0;
if (loadPending || mediaPlaylistLoader.isLoading() || mediaPlaylistLoader.hasFatalError()) {
// Load already pending, in progress, or a fatal error has been encountered. Do nothing.