BitMiracle.Tiff2Pdf.T2P.sample_rgba_to_rgb C# (CSharp) 메소드

        private static int sample_rgba_to_rgb(byte[] data, int samplecount)
        {
            int[] data32 = Tiff.ByteArrayToInts(data, 0, samplecount * sizeof(int));

            int i = 0;
            for ( ; i < samplecount; i++)
            {
                int sample = data32[i];
                byte alpha = (byte)(255 - ((sample >> 24) & 0xff));
                data[i * 3] = (byte)(((sample >> 16) & 0xff) + alpha);
                data[i * 3 + 1] = (byte)(((sample >> 8) & 0xff) + alpha);
                data[i * 3 + 2] = (byte)((sample & 0xff) + alpha);
            }

            return (i * 3);
        }