audioflinger: implement pause/resume for direct outputs

Extend pause/resume support to direct output threads
(was only for offload threads).

If the HAL implements pause/resume, track pause/resume is forwarded to
the HAL.

Pause, flush, resume sequence is respected by executing the HAL
calls in the playback thread (same as offload).

Make sure the track flags on client side are consistent with the
flags on server side.

Bug: 17883772.
Change-Id: I89b360d69818f7a9204bd36e3ec63a79e106ecf1

1 files changed, 4 insertions, 5 deletions

diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index fcbf8f8..e970036 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -823,12 +823,11 @@ void AudioFlinger::PlaybackThread::Track::flush()
             // this will be done by prepareTracks_l() when the track is stopped.
             // prepareTracks_l() will see mState == FLUSHED, then
             // remove from active track list, reset(), and trigger presentation complete
+            if (isDirect()) {
+                mFlushHwPending = true;
+            }
             if (playbackThread->mActiveTracks.indexOf(this) < 0) {
                 reset();
-                if (thread->type() == ThreadBase::DIRECT) {
-                    DirectOutputThread *t = (DirectOutputThread *)playbackThread;
-                    t->flushHw_l();
-                }
             }
         }
         // Prevent flush being lost if the track is flushed and then resumed
@@ -841,7 +840,7 @@ void AudioFlinger::PlaybackThread::Track::flush()
 // must be called with thread lock held
 void AudioFlinger::PlaybackThread::Track::flushAck()
 {
-    if (!isOffloaded())
+    if (!isOffloaded() && !isDirect())
         return;
 
     mFlushHwPending = false;