Esempio n. 1
0
        // APNG
        public static PNGWriter CreateIndexed8(int width, int height, int depth, byte[] colors, Color[] palette, Vector4[] materials)
        {
            var result = new PNGWriter {
                stream       = new MemoryStream(),
                width        = width,
                height       = height,
                bitsPerPixel = 8,
                ColorType    = ColorType.Indexed,
            };

            result.writer = new BinaryWriter(result.stream);
            var frameSize = width * height;

            result.WriteSignature();
            result.WriteIHDR();
            if (palette != null)
            {
                result.WritePLTE(palette);
                result.WritetRNS(palette);
                //result.WritesPLT_RGBA(palette);
            }
            if (materials != null)
            {
                result.WritesPLT_MATL(materials);
            }
            result.WriteacTL((uint)depth);
            uint sequence     = 0;
            var  frameControl = new FrameControl {
                width    = (uint)width,
                height   = (uint)height,
                delayNum = 1,
                delayDen = 60,
            };

            frameControl.sequence = sequence++;
            result.WritefcTL(frameControl);
            if (depth > 0)
            {
                result.WriteIDAT(colors, 0, frameSize);
            }
            for (int f = 1; f < depth; f++)
            {
                frameControl.sequence = sequence++;
                result.WritefcTL(frameControl);
                result.WritefdAT(sequence++, colors, f * frameSize, frameSize);
            }
            result.WriteIEND();
            return(result);
        }
Esempio n. 2
0
        public static PNGWriter CreateA8FirstSlice(int width, int height, int depth, byte[] colors)
        {
            var result = new PNGWriter {
                stream       = new MemoryStream(),
                width        = width,
                height       = height,
                bitsPerPixel = 8,
                ColorType    = ColorType.Alpha,
            };

            result.writer = new BinaryWriter(result.stream);
            result.WriteSignature();
            result.WriteIHDR();
            result.WriteIDAT(colors, 0, colors.LongLength / depth);
            result.WriteIEND();
            return(result);
        }