public boolean getSampleCryptoInfo(MediaCodec.CryptoInfo info) {
        return mApiExtractor.getSampleCryptoInfo(info);
    }
If the sample flags indicate that the current sample is at least
partially encrypted, this call returns relevant information about
the structure of the sample data required for decryption.
@param info The android.media.MediaCodec.CryptoInfo structure
            to be filled in.
@return true iff the sample flags contain {@link #SAMPLE_FLAG_ENCRYPTED}
MediaPlayer/src/main/java/net/protyposis/android/mediaplayer/MediaExtractor.java