commit 0f7b5f2b231caf87da9b20b74d086e5a9d6f4a9d
author Eric Laurent <elaurent@google.com> Fri Dec 19 10:43:21 2014 -0800
committer Eric Laurent <elaurent@google.com> Fri Dec 19 16:41:52 2014 -0800
tree f6f15345f054cdc13116a1443b80454e256b7c71
parent e48cf5b8f823c30af93577c1e380d752ac69b871

audioflinger: pause HW A/V sync output when AudioTrack underruns

Do not standby, starve or feed 0s to the audio HAL on direct
output using HW A/V sync mode.

Bug: 17883772.

Change-Id: I11e6c97ec24360d75f9b602814d40a54b60cb7a7

services/audioflinger/Threads.h

diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index f5d0e27..1088843 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -710,6 +710,9 @@
                                    audio_patch_handle_t *handle);
     virtual     status_t    releaseAudioPatch_l(const audio_patch_handle_t handle);
 
+                bool        usesHwAvSync() const { return (mType == DIRECT) && (mOutput != NULL) &&
+                                                (mOutput->flags & AUDIO_OUTPUT_FLAG_HW_AV_SYNC); }
+
 private:
 
     friend class AudioFlinger;      // for numerous