public long getInputSamplePTS() {
        return mInputSamplePTS;
    }
Returns the PTS of the current frame enqueued for decoding. This is always ahead of
{@link #getCurrentDecodingPTS()}.
@return the PTS of the most recent frame enqueued for decoding
MediaPlayer/src/main/java/net/protyposis/android/mediaplayer/MediaCodecDecoder.java