BitMiracle.LibJpeg.Classic.Internal.jpeg_color_deconverter.build_bg_ycc_rgb_table C# (CSharp) Method

        private void build_bg_ycc_rgb_table()
        {
            /* Wide gamut case, bg-sYCC */
            m_Cr_r_tab = new int[JpegConstants.MAXJSAMPLE + 1];
            m_Cb_b_tab = new int[JpegConstants.MAXJSAMPLE + 1];
            m_Cr_g_tab = new int[JpegConstants.MAXJSAMPLE + 1];
            m_Cb_g_tab = new int[JpegConstants.MAXJSAMPLE + 1];

            for (int i = 0, x = -JpegConstants.CENTERJSAMPLE; i <= JpegConstants.MAXJSAMPLE; i++, x++)
            {
                /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
                /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
                /* Cr=>R value is nearest int to 2.804 * x */
                m_Cr_r_tab[i] = JpegUtils.RIGHT_SHIFT(FIX(2.804) * x + ONE_HALF, SCALEBITS);

                /* Cb=>B value is nearest int to 3.544 * x */
                m_Cb_b_tab[i] = JpegUtils.RIGHT_SHIFT(FIX(3.544) * x + ONE_HALF, SCALEBITS);

                /* Cr=>G value is scaled-up -1.428272572 * x */
                m_Cr_g_tab[i] = (-FIX(1.428272572)) * x;

                /* Cb=>G value is scaled-up -0.688272572 * x */
                /* We also add in ONE_HALF so that need not do it in inner loop */
                m_Cb_g_tab[i] = (-FIX(0.688272572)) * x + ONE_HALF;
            }
        }