Merge "MediaPlayerService: fix AudioSink latency" into ics-mr1

Author: Eric Laurent

media/libmediaplayerservice/MediaPlayerService.cpp

@@ -320,7 +320,7 @@ status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& a
             mStreamType, mLeftVolume, mRightVolume);
     result.append(buffer);
     snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
-            mMsecsPerFrame, mLatency);
+            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
     result.append(buffer);
     snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
             mAuxEffectId, mSendLevel);
@@ -1265,7 +1265,6 @@ MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
     mStreamType = AUDIO_STREAM_MUSIC;
     mLeftVolume = 1.0;
     mRightVolume = 1.0;
-    mLatency = 0;
     mMsecsPerFrame = 0;
     mAuxEffectId = 0;
     mSendLevel = 0.0;
@@ -1324,7 +1323,8 @@ ssize_t MediaPlayerService::AudioOutput::frameSize() const
 
 uint32_t MediaPlayerService::AudioOutput::latency () const
 {
-    return mLatency;
+    if (mTrack == 0) return 0;
+    return mTrack->latency();
 }
 
 float MediaPlayerService::AudioOutput::msecsPerFrame() const
@@ -1403,7 +1403,6 @@ status_t MediaPlayerService::AudioOutput::open(
     t->setVolume(mLeftVolume, mRightVolume);
 
     mMsecsPerFrame = 1.e3 / (float) sampleRate;
-    mLatency = t->latency();
     mTrack = t;
 
     t->setAuxEffectSendLevel(mSendLevel);

media/libmediaplayerservice/MediaPlayerService.h

@@ -112,7 +112,6 @@ class MediaPlayerService : public BnMediaPlayerService
         float                   mLeftVolume;
         float                   mRightVolume;
         float                   mMsecsPerFrame;
-        uint32_t                mLatency;
         int                     mSessionId;
         float                   mSendLevel;
         int                     mAuxEffectId;

media/libstagefright/AudioPlayer.cpp

@@ -408,6 +408,12 @@ size_t AudioPlayer::fillBuffer(void *data, size_t size) {
                 break;
             }
 
+            if (mAudioSink != NULL) {
+                mLatencyUs = (int64_t)mAudioSink->latency() * 1000;
+            } else {
+                mLatencyUs = (int64_t)mAudioTrack->latency() * 1000;
+            }
+
             CHECK(mInputBuffer->meta_data()->findInt64(
                         kKeyTime, &mPositionTimeMediaUs));