BitMiracle.LibJpeg.Classic.Internal.my_merged_upsampler.build_ycc_rgb_table C# (CSharp) Method

        private void build_ycc_rgb_table()
        {
            /* Normal case, 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 1.402 * x */
                m_Cr_r_tab[i] = JpegUtils.RIGHT_SHIFT(FIX(1.402) * x + ONE_HALF, SCALEBITS);

                /* Cb=>B value is nearest int to 1.772 * x */
                m_Cb_b_tab[i] = JpegUtils.RIGHT_SHIFT(FIX(1.772) * x + ONE_HALF, SCALEBITS);

                /* Cr=>G value is scaled-up -0.714136286 * x */
                m_Cr_g_tab[i] = (-FIX(0.714136286)) * x;

                /* Cb=>G value is scaled-up -0.344136286 * x */
                /* We also add in ONE_HALF so that need not do it in inner loop */
                m_Cb_g_tab[i] = (-FIX(0.344136286)) * x + ONE_HALF;
            }
        }