如何将bmp文件转换为pcx文件

Question

是否找到将图像格式bpm转换为pcx的方法或dll？

我一直在尝试遵循以下代码。

 public static void ConvertBMP2PCX(string bmpFilePath)
    {
        List<byte> listBytePCX = new List<byte>();

        Bitmap bmp = new Bitmap(bmpFilePath);
        int bmpWidth = bmp.Width;
        int bmpHeight = bmp.Height;

        byte[] byteBmp;
        using (MemoryStream ms = new MemoryStream())
        {
            bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
            byteBmp = ms.ToArray();
            ms.Close();
        }

        int bytesPerLine = (bmpWidth + 7) / 8;
        int xEnd = bmpWidth - 1;
        int yEnd = bmpHeight - 1;

        byte[] header ={
        0x0A,           // "PCX File"
        0x05,           // "Version 5"
        0x01,           // RLE Encoding
        0x01,           // 1 bit per pixel
        0x00, 0x00,     // XStart at 0
        0x00, 0x00,     // YStart at 0
        (byte)(xEnd&0xFF), (byte)((xEnd>>8) & 0xFF),      // Xend
        (byte)(yEnd&0xFF), (byte)((yEnd>>8) & 0xFF),      // Yend
        (byte)(xEnd&0xFF), (byte)((xEnd>>8) & 0xFF),      // Xend
        (byte)(yEnd&0xFF), (byte)((yEnd>>8) & 0xFF),      // Yend
        0x0F, 0x0F, 0x0F, 0x0E, 0x0E, 0x0E, 0x0D, 0x0D, 0x0D, 0x0C, 0x0C, 0x0C,   //48-byte EGA palette info
        0x0B, 0x0B, 0x0B, 0x0A, 0x0A, 0x0A, 0x09, 0x09, 0x09, 0x08, 0x08, 0x08,  
        0x07, 0x07, 0x07, 0x06, 0x06, 0x06, 0x05, 0x05, 0x05, 0x04, 0x04, 0x04,  
        0x03, 0x03, 0x03, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00,  
        0x00,          // Reserved byte, always x00
        0x01,          // 1 bit plane
        (byte)(bytesPerLine&0xFF), (byte)((bytesPerLine>>8) & 0xFF),      // Bytes per scan line: (XEnd - XStart,  1) / 8
        0x01, 0x00,    // Palette type: 1 means color or monochrome
        0x00, 0x00,    // Horizontal screen size (not used)
        0x00, 0x00     // Vertical screen size (not used)
     };
        listBytePCX.AddRange(header); // Write most of header data
        listBytePCX.AddRange(new byte[54]);// pad the 128-byte header


        byte[] rowIn = new byte[bmpWidth * 3];
        int[] bits = { 128, 64, 32, 16, 8, 4, 2, 1 };

        byte[] bytes = new byte[2];
        int last = 0;
        int count = 0;
        for (int y = 0; y < bmpHeight; y++)
        {
            //getPixelRow(rowIn, y);
            int currentByteCount = (y + 1) * bytesPerLine;
            if (currentByteCount > byteBmp.Length)
            {
                currentByteCount = byteBmp.Length;
                rowIn = new byte[bmpWidth * 3];
            }

            for (int i = y * bytesPerLine; i < currentByteCount; i++)
            {
                rowIn[count] = byteBmp[i];
            }
            count = 0;

            for (int x = 0; x < bmpWidth; x += 8)
            {
                int n = x + 8;
                if (n > bmpWidth) n = bmpWidth;
                int b = 0;
                for (int j = x; j < n; j++)
                    if (rowIn[j + j + j] != 0)
                        b |= bits[j - x];
                if (last == b && count < 63)
                    count++;
                else
                {
                    if (count > 0)
                    {
                        bytes[0] = (byte)(count | 0xC0);
                        bytes[1] = (byte)last;
                        listBytePCX.Add(bytes[0]);
                        listBytePCX.Add(bytes[1]);
                    }
                    last = b;
                    count = 1;
                }
            }
            if (count > 0)
            {
                bytes[0] = (byte)(count | 0xC0);
                bytes[1] = (byte)last;
                listBytePCX.Add(bytes[0]);
                listBytePCX.Add(bytes[1]);
                count = 0;
                last = 0;
            }
        }

        //Save pcx file
        string pcxFilePath = bmpFilePath.Substring(0, bmpFilePath.LastIndexOf('.') + 1) + "1";
        using (FileStream fs = new FileStream(pcxFilePath, FileMode.Create, FileAccess.Write))
        {
            fs.Write(listBytePCX.ToArray(), 0, listBytePCX.Count);
            fs.Flush();
            fs.Close();
        }
    }

但这行不通，只能用pcx格式创建一条细线。

Answer 1

在http://magick.codeplex.com/上有一个适用于.NET的ImageMagick库的端口。 该库支持BMP和PCX格式，还可以将图像从一种格式转换为另一种格式。