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);
}
static VbpInformationHeader ReadInfoHeader(Stream input)
{
input.Position = 14L;
byte[] buffer = new byte[40];
input.Read(buffer, 0, 40);
VbpInformationHeader header = new VbpInformationHeader();
header.Size = BitConverter.ToUInt32(buffer, 0);
header.Width = BitConverter.ToInt32(buffer, 4);
header.Height = BitConverter.ToInt32(buffer, 8);
header.Planes = BitConverter.ToUInt16(buffer, 12);
header.BitCount = BitConverter.ToUInt16(buffer, 14);
uint num = BitConverter.ToUInt32(buffer, 0x10);
header.Compression = (IH_Compression)num;
header.SizeImage = BitConverter.ToUInt32(buffer, 20);
header.XPelsPerMeter = BitConverter.ToInt32(buffer, 0x18);
header.YPelsPerMeter = BitConverter.ToInt32(buffer, 0x1c);
header.ClrUsed = BitConverter.ToUInt32(buffer, 0x20);
header.ClrImportant = BitConverter.ToUInt32(buffer, 0x24);
if (header.Compression != IH_Compression.BI_BITFIELDS)
{
throw new Exception("Wrong Filetype!");
}
input.Position = 0x36L;
buffer = new byte[0x10];
input.Read(buffer, 0, 0x10);
header.ColorMask.R = BitConverter.ToUInt32(buffer, 0);
header.ColorMask.G = BitConverter.ToUInt32(buffer, 4);
header.ColorMask.B = BitConverter.ToUInt32(buffer, 8);
header.ColorMask.Mask = BitConverter.ToUInt32(buffer, 12);
return(header);
}
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 VbpInformationHeader ReadInfoHeader(Stream input)
{
input.Position = 14L;
byte[] buffer = new byte[40];
input.Read(buffer, 0, 40);
VbpInformationHeader header = new VbpInformationHeader
{
Size = BitConverter.ToUInt32(buffer, 0),
Width = BitConverter.ToInt32(buffer, 4),
Height = BitConverter.ToInt32(buffer, 8),
Planes = BitConverter.ToUInt16(buffer, 12),
BitCount = BitConverter.ToUInt16(buffer, 14)
};
uint num = BitConverter.ToUInt32(buffer, 0x10);
header.Compression = (IH_Compression)num;
header.SizeImage = BitConverter.ToUInt32(buffer, 20);
header.XPelsPerMeter = BitConverter.ToInt32(buffer, 0x18);
header.YPelsPerMeter = BitConverter.ToInt32(buffer, 0x1c);
header.ClrUsed = BitConverter.ToUInt32(buffer, 0x20);
header.ClrImportant = BitConverter.ToUInt32(buffer, 0x24);
if (header.Compression != IH_Compression.BI_BITFIELDS)
{
throw new Exception("Wrong Filetype!");
}
input.Position = 0x36L;
buffer = new byte[0x10];
input.Read(buffer, 0, 0x10);
header.ColorMask.R = BitConverter.ToUInt32(buffer, 0);
header.ColorMask.G = BitConverter.ToUInt32(buffer, 4);
header.ColorMask.B = BitConverter.ToUInt32(buffer, 8);
header.ColorMask.Mask = BitConverter.ToUInt32(buffer, 12);
return header;
}
