Implement Track::getTimestamp()
using a new timestamp latch in PlaybackThread, and
AudioTrackServerProxy::framesReleased() which returns mServer.
Change-Id: I1ebfba968c773faaab95648c272fd3ebd74718d6
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 31d5323..1333de2 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -606,6 +606,17 @@
// accessed by both binder threads and within threadLoop(), lock on mutex needed
unsigned mFastTrackAvailMask; // bit i set if fast track [i] is available
virtual void flushOutput_l();
+
+private:
+ // timestamp latch:
+ // D input is written by threadLoop_write while mutex is unlocked, and read while locked
+ // Q output is written while locked, and read while locked
+ struct {
+ AudioTimestamp mTimestamp;
+ uint32_t mUnpresentedFrames;
+ } mLatchD, mLatchQ;
+ bool mLatchDValid; // true means mLatchD is valid, and clock it into latch at next opportunity
+ bool mLatchQValid; // true means mLatchQ is valid
};
class MixerThread : public PlaybackThread {