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Prevent index out of bounds exceptions in some live HLS scenarios

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Can happen if the load position falls behind in every playlist and
when we try to load the next segment, the adaptive selection logic
decides to change variant.

Issue:#5816
PiperOrigin-RevId: 245923006
This commit is contained in:
aquilescanta 2019-04-30 12:26:39 +01:00 committed by Oliver Woodman
parent 4a5b8e17de
commit 6c1065c6d2
2 changed files with 8 additions and 6 deletions
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2
RELEASENOTES.md
View File

@ -103,6 +103,8 @@
([#5441](https://github.com/google/ExoPlayer/issues/5441)).
* Parse `EXT-X-MEDIA` `CHARACTERISTICS` attribute into `Format.roleFlags`.
* Add metadata entry for HLS tracks to expose master playlist information.
* Prevent `IndexOutOfBoundsException` in some live HLS scenarios
([#5816](https://github.com/google/ExoPlayer/issues/5816)).
* Support for playing spherical videos on Daydream.
* Cast extension: Work around Cast framework returning a limited-size queue
items list ([#4964](https://github.com/google/ExoPlayer/issues/4964)).

12
library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsChunkSource.java
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@ -278,8 +278,7 @@ import java.util.Map;
long chunkMediaSequence =
getChunkMediaSequence(
previous, switchingTrack, mediaPlaylist, startOfPlaylistInPeriodUs, loadPositionUs);
if (chunkMediaSequence < mediaPlaylist.mediaSequence) {
if (previous != null && switchingTrack) {
if (chunkMediaSequence < mediaPlaylist.mediaSequence && previous != null && switchingTrack) {
// We try getting the next chunk without adapting in case that's the reason for falling
// behind the live window.
selectedTrackIndex = oldTrackIndex;
@ -289,10 +288,11 @@ import java.util.Map;
startOfPlaylistInPeriodUs =
mediaPlaylist.startTimeUs - playlistTracker.getInitialStartTimeUs();
chunkMediaSequence = previous.getNextChunkIndex();
} else {
fatalError = new BehindLiveWindowException();
return;
}
}
if (chunkMediaSequence < mediaPlaylist.mediaSequence) {
fatalError = new BehindLiveWindowException();
return;
}
int segmentIndexInPlaylist = (int) (chunkMediaSequence - mediaPlaylist.mediaSequence);