commit b01faa31462e19957ae3c0c3ada07c9576a9494f
author Andy Hung <hunga@google.com> Wed Apr 27 12:51:32 2016 -0700
committer Andy Hung <hunga@google.com> Fri Apr 29 18:16:03 2016 -0700
tree 8e01ae4c10bb12e81745787526c34ba3b6abf2af
parent ecd0a41d9a2cc9efbc4ad6d4c91d417461772933

AudioTrack: Fix timestamp jitter

When HAL out_get_presentation_position returns error,
use server position adjusted for latency.

Bug: 28250436
Change-Id: I3dbcb9b7c4e56d34e7e161d1a02d8f64afd602b9

include/media/AudioTrack.h

diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index fc7217a..3cadf6b 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -1024,6 +1024,8 @@
     bool                    mTimestampStartupGlitchReported; // reduce log spam
     bool                    mRetrogradeMotionReported; // reduce log spam
     AudioTimestamp          mPreviousTimestamp;     // used to detect retrograde motion
+    ExtendedTimestamp::Location mPreviousLocation;  // location used for previous timestamp
+    double                  mComputedLatencyMs;     // latency between server and kernel
 
     uint32_t                mUnderrunCountOffset;   // updated when restoring tracks