static Image ReadBitmapData(Stream input, VbpFileHeader fileHeader, VbpInformationHeader infoHeader)
{
input.Position = fileHeader.OffBits;
int count = (infoHeader.Width * infoHeader.Height) * 2;
byte[] buffer = new byte[count];
input.Read(buffer, 0, count);
Image bitmap = new Image(infoHeader.Width, infoHeader.Height);
int shift = GetShift(infoHeader.ColorMask.R);
int num3 = GetShift(infoHeader.ColorMask.G);
int num4 = GetShift(infoHeader.ColorMask.B);
int num5 = 0;
for (int i = 0; i < infoHeader.Height; i++)
{
for (int j = 0; j < infoHeader.Width; j++)
{
ushort num8 = BitConverter.ToUInt16(buffer, num5++ * 2);
ushort red = (ushort)_colorTable5Bit[(num8 & infoHeader.ColorMask.R) >> shift];
ushort green = (ushort)_colorTable5Bit[(num8 & infoHeader.ColorMask.G) >> num3];
ushort blue = (ushort)_colorTable5Bit[(num8 & infoHeader.ColorMask.B) >> num4];
Pixel color = new Pixel((byte)red, (byte)green, (byte)blue, 255);
bitmap.SetPixel((uint)j, (uint)i, color);
}
}
return bitmap;
}
static Image ReadBitmapData(Stream input, VbpFileHeader fileHeader, VbpInformationHeader infoHeader)
{
input.Position = fileHeader.OffBits;
int count = (infoHeader.Width * infoHeader.Height) * 2;
byte[] buffer = new byte[count];
input.Read(buffer, 0, count);
Image bitmap = new Image(infoHeader.Width, infoHeader.Height);
int shift = GetShift(infoHeader.ColorMask.R);
int num3 = GetShift(infoHeader.ColorMask.G);
int num4 = GetShift(infoHeader.ColorMask.B);
int num5 = 0;
for (int i = 0; i < infoHeader.Height; i++)
{
for (int j = 0; j < infoHeader.Width; j++)
{
ushort num8 = BitConverter.ToUInt16(buffer, num5++ *2);
ushort red = (ushort)_colorTable5Bit[(num8 & infoHeader.ColorMask.R) >> shift];
ushort green = (ushort)_colorTable5Bit[(num8 & infoHeader.ColorMask.G) >> num3];
ushort blue = (ushort)_colorTable5Bit[(num8 & infoHeader.ColorMask.B) >> num4];
Pixel color = new Pixel((byte)red, (byte)green, (byte)blue, 255);
bitmap.SetPixel((uint)j, (uint)i, color);
}
}
return(bitmap);
}
public static Image ReadBitmap(Stream input)
{
Image i = new Image(160, 120);
VbpFileHeader fileHeader = ReadFileHeader(input);
VbpInformationHeader infoHeader = ReadInfoHeader(input);
if (infoHeader.Compression == IH_Compression.BI_BITFIELDS)
{
i = ReadBitmapData(input, fileHeader, infoHeader);
}
return(i);
}
static VbpFileHeader ReadFileHeader(Stream input)
{
input.Position = 0L;
byte[] buffer = new byte[14];
input.Read(buffer, 0, 14);
VbpFileHeader header = new VbpFileHeader();
header.Type = new char[] { (char)buffer[0], (char)buffer[1] };
if ((header.Type[0] != 'B') || (header.Type[1] != 'M'))
{
throw new Exception("Wrong Filetype!");
}
header.Size = BitConverter.ToUInt32(buffer, 2);
header.Reserved = BitConverter.ToUInt32(buffer, 6);
header.OffBits = BitConverter.ToUInt32(buffer, 10);
return(header);
}
static VbpFileHeader ReadFileHeader(Stream input)
{
input.Position = 0L;
byte[] buffer = new byte[14];
input.Read(buffer, 0, 14);
VbpFileHeader header = new VbpFileHeader
{
Type = new char[] { (char)buffer[0], (char)buffer[1] }
};
if ((header.Type[0] != 'B') || (header.Type[1] != 'M'))
{
throw new Exception("Wrong Filetype!");
}
header.Size = BitConverter.ToUInt32(buffer, 2);
header.Reserved = BitConverter.ToUInt32(buffer, 6);
header.OffBits = BitConverter.ToUInt32(buffer, 10);
return header;
}
