SCameraController.java

class SCameraController {
    ....

    private final ImageReader.OnImageAvailableListener mOnImageAvailableListener
            = new ImageReader.OnImageAvailableListener() {

        @Override
        public void onImageAvailable(ImageReader reader) {
            Image image = reader.acquireNextImage();

            if (image == null) {
                return;
            }

            ByteBuffer buffer = imageHelper.YUV_TO_RGB_Buffer(image);
            calculator.updateRgbFrame(byteBuffer);

            image.close();
        }
    };
}