audioflinger: implement getTimestamp() for offloaded tracks

Bug: 9587132.
Change-Id: Ie9d5f4cca96306d08bc9a2dbd6edd8953096702d

3 files changed, 34 insertions, 12 deletions

diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 7d0ecac..242e020 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -2340,6 +2340,22 @@ void AudioFlinger::PlaybackThread::removeTracks_l(const Vector< sp<Track> >& tra
 
 }
 
+status_t AudioFlinger::PlaybackThread::getTimestamp_l(AudioTimestamp& timestamp)
+{
+    if (mNormalSink != 0) {
+        return mNormalSink->getTimestamp(timestamp);
+    }
+    if (mType == OFFLOAD && mOutput->stream->get_presentation_position) {
+        uint64_t position64;
+        int ret = mOutput->stream->get_presentation_position(
+                                                mOutput->stream, &position64, &timestamp.mTime);
+        if (ret == 0) {
+            timestamp.mPosition = (uint32_t)position64;
+            return NO_ERROR;
+        }
+    }
+    return INVALID_OPERATION;
+}
 // ----------------------------------------------------------------------------
 
 AudioFlinger::MixerThread::MixerThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 3fe470c..f13cb54 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -466,6 +466,8 @@ public:
                 // Return's the HAL's frame count i.e. fast mixer buffer size.
                 size_t      frameCountHAL() const { return mFrameCount; }
 
+                status_t         getTimestamp_l(AudioTimestamp& timestamp);
+
 protected:
     // updated by readOutputParameters()
     size_t                          mNormalFrameCount;  // normal mixer and effects
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index 57aad1e..ccba014 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -757,19 +757,23 @@ status_t AudioFlinger::PlaybackThread::Track::getTimestamp(AudioTimestamp& times
     }
     Mutex::Autolock _l(thread->mLock);
     PlaybackThread *playbackThread = (PlaybackThread *)thread.get();
-    if (!playbackThread->mLatchQValid) {
-        return INVALID_OPERATION;
-    }
-    uint32_t unpresentedFrames =
-            ((int64_t) playbackThread->mLatchQ.mUnpresentedFrames * mSampleRate) /
-            playbackThread->mSampleRate;
-    uint32_t framesWritten = mAudioTrackServerProxy->framesReleased();
-    if (framesWritten < unpresentedFrames) {
-        return INVALID_OPERATION;
+    if (!isOffloaded()) {
+        if (!playbackThread->mLatchQValid) {
+            return INVALID_OPERATION;
+        }
+        uint32_t unpresentedFrames =
+                ((int64_t) playbackThread->mLatchQ.mUnpresentedFrames * mSampleRate) /
+                playbackThread->mSampleRate;
+        uint32_t framesWritten = mAudioTrackServerProxy->framesReleased();
+        if (framesWritten < unpresentedFrames) {
+            return INVALID_OPERATION;
+        }
+        timestamp.mPosition = framesWritten - unpresentedFrames;
+        timestamp.mTime = playbackThread->mLatchQ.mTimestamp.mTime;
+        return NO_ERROR;
     }
-    timestamp.mPosition = framesWritten - unpresentedFrames;
-    timestamp.mTime = playbackThread->mLatchQ.mTimestamp.mTime;
-    return NO_ERROR;
+
+    return playbackThread->getTimestamp_l(timestamp);
 }
 
 status_t AudioFlinger::PlaybackThread::Track::attachAuxEffect(int EffectId)