Merge "audioflinger: refresh fast track underrun state upon start"

        //       this means we are potentially denying other more important fast tracks from

        //       being created.  It would be better to allocate the index dynamically.

        mFastIndex = i;

        // Read the initial underruns because this field is never cleared by the fast mixer

        mObservedUnderruns = thread->getFastTrackUnderruns(i);

        thread->mFastTrackAvailMask &= ~(1 << i);

    }

}

        }

        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

            // after stop.

            mObservedUnderruns = playbackThread->getFastTrackUnderruns(mFastIndex);

        }

        status = playbackThread->addTrack_l(this);

        if (status == INVALID_OPERATION || status == PERMISSION_DENIED) {

            triggerEvents(AudioSystem::SYNC_EVENT_PRESENTATION_COMPLETE);