Start point for track sink frame map
When start the track, add current track sink frame info to mFrameMap. If
the HAL returns a position that is smaller than the first written frame,
the timestamp will be interpolated instead of using a larger value
(first written frame's position).
Bug: 238936281
Test: On device
Change-Id: Ib816b62a5724a0f48a449c2fdfdaa0b6936d710e
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index fc37bd2..b55504b 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -1177,7 +1177,7 @@
volatile int32_t mSuspended;
int64_t mBytesWritten;
- int64_t mFramesWritten; // not reset on standby
+ std::atomic<int64_t> mFramesWritten; // not reset on standby
int64_t mLastFramesWritten = -1; // track changes in timestamp
// server frames written.
int64_t mSuspendedFrames; // not reset on standby
@@ -1391,6 +1391,7 @@
virtual bool hasFastMixer() const = 0;
virtual FastTrackUnderruns getFastTrackUnderruns(size_t fastIndex __unused) const
{ FastTrackUnderruns dummy; return dummy; }
+ const std::atomic<int64_t>& framesWritten() const { return mFramesWritten; }
protected:
// accessed by both binder threads and within threadLoop(), lock on mutex needed
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index 2dfa1b2..47590ce 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -1094,12 +1094,22 @@
__func__, mId, (int)mThreadIoHandle);
}
- // states to reset position info for non-offloaded/direct tracks
- if (!isOffloaded() && !isDirect()
+ PlaybackThread *playbackThread = (PlaybackThread *)thread.get();
+
+ // states to reset position info for pcm tracks
+ if (audio_is_linear_pcm(mFormat)
&& (state == IDLE || state == STOPPED || state == FLUSHED)) {
mFrameMap.reset();
+
+ if (!isFastTrack() && (isDirect() || isOffloaded())) {
+ // Start point of track -> sink frame map. If the HAL returns a
+ // frame position smaller than the first written frame in
+ // updateTrackFrameInfo, the timestamp can be interpolated
+ // instead of using a larger value.
+ mFrameMap.push(mAudioTrackServerProxy->framesReleased(),
+ playbackThread->framesWritten());
+ }
}
- PlaybackThread *playbackThread = (PlaybackThread *)thread.get();
if (isFastTrack()) {
// refresh fast track underruns on start because that field is never cleared
// by the fast mixer; furthermore, the same track can be recycled, i.e. start