BitMiracle.LibTiff.Classic.TiffRgbaImage.YCbCrtoRGB C# (CSharp) Method

        private void YCbCrtoRGB(out int dst, int Y, int Cb, int Cr)
        {
            int r, g, b;
            ycbcr.YCbCrtoRGB(Y, Cb, Cr, out r, out g, out b);
            dst = PACK(r, g, b);
        }

        /// <summary>
        /// 8-bit packed YCbCr samples w/ 1,2 subsampling => RGB
        /// </summary>
        private static void putcontig8bitYCbCr12tile(
            TiffRgbaImage img, int[] raster, int rasterOffset, int rasterShift,
            int x, int y, int width, int height, byte[] buffer, int offset, int bufferShift)
        {
            bufferShift = (bufferShift / 2) * 4;
            int rasterOffset2 = rasterOffset + width + rasterShift;

            while (height >= 2)
            {
                x = width;
                do
                {
                    int Cb = buffer[offset + 2];
                    int Cr = buffer[offset + 3];
                    img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
                    img.YCbCrtoRGB(out raster[rasterOffset2 + 0], buffer[offset + 1], Cb, Cr);
                    rasterOffset++;
                    rasterOffset2++;
                    offset += 4;
                } while (--x != 0);

                rasterOffset += rasterShift * 2 + width;
                rasterOffset2 += rasterShift * 2 + width;
                offset += bufferShift;
                height -= 2;
            }

            if (height == 1)
            {
                x = width;
                do
                {
                    int Cb = buffer[offset + 2];
                    int Cr = buffer[offset + 3];
                    img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
                    rasterOffset++;
                    offset += 4;
                } while (--x != 0);
            }
        }