예제 #1
0
        public static AccessibleBitmap Decompress(byte[] source, int width, int height, int pixelBytes)
        {
            BitStreamFIFO bs = new BitStreamFIFO(source);                               // Convert the image into a bitstream
            bool verticallyCompressed = bs.ReadBool();                                  // Store if image was vertically compressed or not
            int maxBitCount = bs.ReadByte();                                            // Get the highest bitcount value
            AccessibleBitmap bmp = new AccessibleBitmap(width, height, pixelBytes);     // Create new bitmap to write all pixels to

            // Ints to keep track of coords
            int x = 0;
            int y = 0;

            // Loop while there are still bits to read
            while (bs.Length > maxBitCount)
            {
                int counterValue = bs.ReadInt(maxBitCount);     // Get the counter value of the next pixel value
                byte[] pixel = bs.ReadByteArray(pixelBytes);    // Get the pixel value

                for (int i = 0; i < counterValue; i++)
                {
                    bmp.SetPixel(x, y, pixel);
                    if (verticallyCompressed)
                    {
                        y++;
                        if (y >= height)
                        {
                            x++;
                            y = 0;
                        }
                    }else
                    {
                        x++;
                        if (x >= width)
                        {
                            y++;
                            x = 0;
                        }
                    }
                }
            }

            // Return the bitmap
            return bmp;
        }