Merge "AudioFlinger: Fix direct output resource from being occupied for too long" am: e36dfbf38b am: d52ea144c2
Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1554983
Change-Id: I6a259e5dc1a445e231db8eda55c10d04f7cc81f6
diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index 472c359..9770054 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -217,6 +217,10 @@
void flushAck();
bool isResumePending();
void resumeAck();
+ // For direct or offloaded tracks ensure that the pause state is acknowledged
+ // by the playback thread in case of an immediate flush.
+ bool isPausePending() const { return mPauseHwPending; }
+ void pauseAck();
void updateTrackFrameInfo(int64_t trackFramesReleased, int64_t sinkFramesWritten,
uint32_t halSampleRate, const ExtendedTimestamp &timeStamp);
@@ -312,6 +316,7 @@
sp<AudioTrackServerProxy> mAudioTrackServerProxy;
bool mResumeToStopping; // track was paused in stopping state.
bool mFlushHwPending; // track requests for thread flush
+ bool mPauseHwPending = false; // direct/offload track request for thread pause
audio_output_flags_t mFlags;
// If the last track change was notified to the client with readAndClearHasChanged
std::atomic_flag mChangeNotified = ATOMIC_FLAG_INIT;
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 0c66301..deb13af 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -5825,8 +5825,15 @@
sp<Track> l = mActiveTracks.getLatest();
bool last = l.get() == track;
- if (track->isPausing()) {
- track->setPaused();
+ if (track->isPausePending()) {
+ track->pauseAck();
+ // It is possible a track might have been flushed or stopped.
+ // Other operations such as flush pending might occur on the next prepare.
+ if (track->isPausing()) {
+ track->setPaused();
+ }
+ // Always perform pause, as an immediate flush will change
+ // the pause state to be no longer isPausing().
if (mHwSupportsPause && last && !mHwPaused) {
doHwPause = true;
mHwPaused = true;
@@ -6368,8 +6375,15 @@
continue;
}
- if (track->isPausing()) {
- track->setPaused();
+ if (track->isPausePending()) {
+ track->pauseAck();
+ // It is possible a track might have been flushed or stopped.
+ // Other operations such as flush pending might occur on the next prepare.
+ if (track->isPausing()) {
+ track->setPaused();
+ }
+ // Always perform pause if last, as an immediate flush will change
+ // the pause state to be no longer isPausing().
if (last) {
if (mHwSupportsPause && !mHwPaused) {
doHwPause = true;
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index fb43a6e..4353b3d 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -1177,6 +1177,9 @@
mState = PAUSING;
ALOGV("%s(%d): ACTIVE/RESUMING => PAUSING on thread %d",
__func__, mId, (int)mThreadIoHandle);
+ if (isOffloadedOrDirect()) {
+ mPauseHwPending = true;
+ }
playbackThread->broadcast_l();
break;
@@ -1264,6 +1267,11 @@
mFlushHwPending = false;
}
+void AudioFlinger::PlaybackThread::Track::pauseAck()
+{
+ mPauseHwPending = false;
+}
+
void AudioFlinger::PlaybackThread::Track::reset()
{
// Do not reset twice to avoid discarding data written just after a flush and before