private static PCXHeader ReadHeader(Stream input)
{
BinaryReader reader = new BinaryReader(input);
PCXHeader header = new PCXHeader();
reader.BaseStream.Seek(0, SeekOrigin.Begin);
header.Manufacturer = reader.ReadByte();
header.Version = reader.ReadByte();
header.Encoding = reader.ReadByte();
header.BitsPerPixel = reader.ReadByte();
header.LeftMargin = reader.ReadInt16();
header.UpperMargin = reader.ReadInt16();
header.RightMargin = reader.ReadInt16();
header.LowerMargin = reader.ReadInt16();
header.Horiz = reader.ReadInt16();
header.Vertic = reader.ReadInt16();
header.Palette = reader.ReadBytes(48);
header.Unused1 = reader.ReadByte();
header.ColourPlanes = reader.ReadByte();
header.BytesPerScanline = reader.ReadInt16();
header.PaletteInfo = reader.ReadInt16();
header.HorizontalScreenSize = reader.ReadInt16();
header.VerticalScreenSize = reader.ReadInt16();
return(header);
}
public static Image Load(string path)
{
if (!File.Exists(path))
{
return(null);
}
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
try
{
PCXHeader header = ReadHeader(fs);
Int32 row = 0;
byte[] palette = header.Palette; // Regular palette
if (IsPaletteThere(fs))
{
palette = GetPalette(fs);
}
int width = header.RightMargin - header.LeftMargin + 1;
int height = header.LowerMargin - header.UpperMargin + 1;
BinaryReader br = new BinaryReader(fs);
br.BaseStream.Seek(128, SeekOrigin.Begin);
byte[] scanLine = new byte[header.ColourPlanes * header.BytesPerScanline];
Bitmap bm = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
System.Drawing.Imaging.BitmapData data = bm.LockBits(new Rectangle(0, 0, bm.Width, bm.Height), System.Drawing.Imaging.ImageLockMode.ReadOnly, bm.PixelFormat);
byte[] parsed = new byte[height * data.Stride];
int i;
while (row < height)
{
if (header.ColourPlanes == 1 && header.BitsPerPixel == 8)
{
GetScanline(br, ref scanLine);
for (i = 0; i < width; ++i)
{
int index = scanLine[i] * 3;
int q = row * data.Stride + i * 3;
parsed[q + 2] = palette[index + 0];
parsed[q + 1] = palette[index + 1];
parsed[q + 0] = palette[index + 2];
}
}
else if (header.ColourPlanes == 3 && header.BitsPerPixel == 8)
{
GetScanline(br, ref scanLine);
for (i = 0; i < width; ++i)
{
int q = row * data.Stride + i * 3;
parsed[q + 2] = scanLine[header.BytesPerScanline * 0 + i];
parsed[q + 1] = scanLine[header.BytesPerScanline * 1 + i];
parsed[q + 0] = scanLine[header.BytesPerScanline * 2 + i];
}
}
row += 1;
}
System.Runtime.InteropServices.Marshal.Copy(parsed, 0, data.Scan0, data.Stride * height);
bm.UnlockBits(data);
return(bm);
}
catch (Exception)
{
}
finally
{
if (fs != null)
{
fs.Close();
}
}
return(null);
}
private static PCXHeader ReadHeader(Stream input)
{
BinaryReader reader = new BinaryReader(input);
PCXHeader header = new PCXHeader();
reader.BaseStream.Seek(0, SeekOrigin.Begin);
header.Manufacturer = reader.ReadByte();
header.Version = reader.ReadByte();
header.Encoding = reader.ReadByte();
header.BitsPerPixel = reader.ReadByte();
header.LeftMargin = reader.ReadInt16();
header.UpperMargin = reader.ReadInt16();
header.RightMargin = reader.ReadInt16();
header.LowerMargin = reader.ReadInt16();
header.Horiz = reader.ReadInt16();
header.Vertic = reader.ReadInt16();
header.Palette = reader.ReadBytes(48);
header.Unused1 = reader.ReadByte();
header.ColourPlanes = reader.ReadByte();
header.BytesPerScanline = reader.ReadInt16();
header.PaletteInfo = reader.ReadInt16();
header.HorizontalScreenSize = reader.ReadInt16();
header.VerticalScreenSize = reader.ReadInt16();
return header;
}
