audio: Fix race condition in AudioTrack underrun.
When audio flinger mixer removes an AudioTrack from the
active list in case of underrun, it is possible that the
client has written a full buffer just after the underrun detection and
is blocked waiting for more space to write. In this case, the client
will never detect the DISABLED flag and the track never be restarted.
Also implement missing DISABLE flag detection in server side audio tracks
(OutputTrack and PatchTrack).
bug: 27567768
Change-Id: I8d0753429d4113498258b1f61bd8ac5939a612f0
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index 69dc062..4de55a2 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -836,6 +836,8 @@
// check sample rate and speed is compatible with AudioTrack
bool isSampleRateSpeedAllowed_l(uint32_t sampleRate, float speed) const;
+ void restartIfDisabled();
+
// Next 4 fields may be changed if IAudioTrack is re-created, but always != 0
sp<IAudioTrack> mAudioTrack;
sp<IMemory> mCblkMemory;