Fix issue 2285561: New AudioFlinger and audio driver API needed for A/V sync

Added getRenderPosition() API to IAudioFlinger to retreive number of audio frames
written by AudioFlinger to audio HAL and by DSP to DAC.

Added getRenderPosition() API to AudioHardwareInterface to retreive number of audio frames
written by DSP to DAC.

Exposed AudioTrack::getPosition() to AudioSink() to make it available to media player.

Removed excessive log in AudioHardwareGeneric.

1 files changed, 13 insertions, 0 deletions

diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index af8d1b56b160..5b061b128ab1 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -1432,6 +1432,12 @@ float MediaPlayerService::AudioOutput::msecsPerFrame() const
     return mMsecsPerFrame;
 }
 
+status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
+{
+    if (mTrack == 0) return NO_INIT;
+    return mTrack->getPosition(position);
+}
+
 status_t MediaPlayerService::AudioOutput::open(
         uint32_t sampleRate, int channelCount, int format, int bufferCount,
         AudioCallback cb, void *cookie)
@@ -1613,6 +1619,13 @@ float MediaPlayerService::AudioCache::msecsPerFrame() const
     return mMsecsPerFrame;
 }
 
+status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
+{
+    if (position == 0) return BAD_VALUE;
+    *position = mSize;
+    return NO_ERROR;
+}
+
 status_t MediaPlayerService::AudioCache::open(
         uint32_t sampleRate, int channelCount, int format, int bufferCount,
         AudioCallback cb, void *cookie)