PlaylistFetcher: add lower bound check when starting live streams

Avoid false 'missed the boat' alarms that cause us to queue a bogus
discontinuity before even starting.

Bug: 17303166
Change-Id: I5003934fc695f30db2df9a0803b8fe960d77a458

diff --git a/media/libstagefright/httplive/PlaylistFetcher.cpp b/media/libstagefright/httplive/PlaylistFetcher.cpp
index 80cb2d0..4d5d79e 100644 (file)
--- a/media/libstagefright/httplive/PlaylistFetcher.cpp
+++ b/media/libstagefright/httplive/PlaylistFetcher.cpp
@@ -754,6 +754,9 @@ void PlaylistFetcher::onDownloadNext() {
             if (!mPlaylist->isComplete() && !mPlaylist->isEvent()) {
                 // If this is a live session, start 3 segments from the end on connect
                 mSeqNumber = lastSeqNumberInPlaylist - 3;
+                if (mSeqNumber < firstSeqNumberInPlaylist) {
+                    mSeqNumber = firstSeqNumberInPlaylist;
+                }
             } else {
                 mSeqNumber = getSeqNumberForTime(mStartTimeUs);
                 mStartTimeUs -= getSegmentStartTimeUs(mSeqNumber);