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-rw-r--r--media/libmedia/AudioTrack.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index f55ec9a..f7921ba 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -1121,8 +1121,14 @@ TimedAudioTrack::TimedAudioTrack() {
status_t TimedAudioTrack::allocateTimedBuffer(size_t size, sp<IMemory>* buffer)
{
+ AutoMutex lock(mLock);
status_t result = UNKNOWN_ERROR;
+ // acquire a strong reference on the IMemory and IAudioTrack so that they cannot be destroyed
+ // while we are accessing the cblk
+ sp<IAudioTrack> audioTrack = mAudioTrack;
+ sp<IMemory> iMem = mCblkMemory;
+
// If the track is not invalid already, try to allocate a buffer. alloc
// fails indicating that the server is dead, flag the track as invalid so
// we can attempt to restore in just a bit.