Merge "Fix for 5369981 Native crash : testPreviewWithEndAudioTrack functional test."

    Mutex::Autolock autoLock(mLock);

    mFlags &= ~CACHE_UNDERRUN;

    mFlags &= ~INFORMED_AV_EOS;

    return play_l();

}

        //This lock is used to syncronize onStreamDone() in PreviewPlayer and

        //stopPreview() in PreviewController

        Mutex::Autolock autoLock(mLockControl);

        /* Make sure PreviewPlayer only notifies MEDIA_PLAYBACK_COMPLETE once for each clip!

         * It happens twice in following scenario.

         * To make the clips in preview storyboard are played and switched smoothly,

         * PreviewController uses two PreviewPlayer instances and one AudioPlayer.

         * The two PreviewPlayer use the same AudioPlayer to play the audio,

         * and change the audio source of the AudioPlayer.

         * If the audio source of current playing clip and next clip are dummy

         * audio source(image or video without audio), it will not change the audio source

         * to avoid the "audio glitch", and keep using the current audio source.

         * When the video of current clip reached the EOS, PreviewPlayer will set EOS flag

         * for video and audio, and it will notify MEDIA_PLAYBACK_COMPLETE.

         * But the audio(dummy audio source) is still playing(for next clip),

         * and when it reached the EOS, and video reached EOS,

         * PreviewPlayer will notify MEDIA_PLAYBACK_COMPLETE again. */

        if (!(mFlags & INFORMED_AV_EOS)) {

            notifyListener_l(MEDIA_PLAYBACK_COMPLETE);

            mFlags |= INFORMED_AV_EOS;

        }

        mFlags |= AT_EOS;

        LOGV("onStreamDone end");

        return;

        AUDIO_AT_EOS        = 256,

        VIDEO_AT_EOS        = 512,

        AUTO_LOOPING        = 1024,

        INFORMED_AV_EOS     = 2048,

    };

    void cancelPlayerEvents(bool keepBufferingGoing = false);