commit c8e09c610fabc7390297ecb48e939acbdfe27325
author Andy Hung <hunga@google.com> Wed Jun 03 23:43:36 2015 -0700
committer Andy Hung <hunga@google.com> Thu Jun 04 12:23:56 2015 -0700
tree 38ceed23e3bbef10f3d54388926c5ea242a1d069
parent 005e9d0300fc326a076ec17b7fa6dd4f51568f55

Improve AudioTrack offload timestamp startup glitch detector

New or existing glitch behavior for Nexus 5 offload audio:
we receive several 0 timestamps,
then we get a stale timestamp (very large),
then a few ms later we get a correct nonzero timestamp.

We attempt to hide the glitch because the retrograde timestamp
correction makes the glitch "sticky".

Bug: 21633313
Change-Id: I39153af718c151f9435e7d315651a811f72743da

include/media/AudioTrack.h

diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index ec16933..c0bc516 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -894,6 +894,7 @@
                                                     // only used for offloaded and direct tracks.
 
     bool                    mPreviousTimestampValid;// true if mPreviousTimestamp is valid
+    bool                    mTimestampStartupGlitchReported; // reduce log spam
     bool                    mRetrogradeMotionReported; // reduce log spam
     AudioTimestamp          mPreviousTimestamp;     // used to detect retrograde motion