private static void WriteHeader(EndianBinaryWriter writer, BmpFileHeader fileHeader)
{
writer.Write(fileHeader.Type);
writer.Write(fileHeader.FileSize);
writer.Write(fileHeader.Reserved);
writer.Write(fileHeader.Offset);
}
private static void WriteHeader(EndianBinaryWriter writer, BmpFileHeader fileHeader)
{
writer.Write(fileHeader.Type);
writer.Write(fileHeader.FileSize);
writer.Write(fileHeader.Reserved);
writer.Write(fileHeader.Offset);
}
private void ReadFileHeader()
{
byte[] data = new byte[BmpFileHeader.size];
currentStream.Read(data, 0, BmpFileHeader.size);
fileHeader = new BmpFileHeader {
Type = BitConverter.ToInt16(data, 0),
FileSize = BitConverter.ToInt32(data, 2),
Reserved = BitConverter.ToInt32(data, 6),
Offset = BitConverter.ToInt32(data, 10)
};
}
public void Encode(ImageBase image, Stream stream, BmpBitsPerPixel bitsPerPixel)
{
if (image == null || stream == null)
{
throw new ArgumentNullException();
}
bmpBitsPerPixel = bitsPerPixel;
int rowWidth = image.Width;
// TODO: Check this for varying file formats.
int amount = (image.Width * (int)bmpBitsPerPixel) % 4;
if (amount != 0)
{
rowWidth += 4 - amount;
}
// Do not use IDisposable pattern here as we want to preserve the stream.
EndianBinaryWriter writer = new EndianBinaryWriter(EndianBitConverter.Little, stream);
int bpp = (int)bmpBitsPerPixel;
BmpFileHeader fileHeader = new BmpFileHeader {
Type = 19778, // BM
Offset = 54,
FileSize = 54 + image.Height * rowWidth * bpp
};
BmpInfoHeader infoHeader = new BmpInfoHeader {
HeaderSize = 40,
Height = image.Height,
Width = image.Width,
BitsPerPixel = (short)(8 * bpp),
Planes = 1,
ImageSize = image.Height * rowWidth * bpp,
ClrUsed = 0,
ClrImportant = 0
};
WriteHeader(writer, fileHeader);
WriteInfo(writer, infoHeader);
WriteImage(writer, image);
writer.Flush();
}
public void Encode(ImageBase image, Stream stream, BmpBitsPerPixel bitsPerPixel)
{
if (image == null || stream == null){
throw new ArgumentNullException();
}
bmpBitsPerPixel = bitsPerPixel;
int rowWidth = image.Width;
// TODO: Check this for varying file formats.
int amount = (image.Width*(int) bmpBitsPerPixel)%4;
if (amount != 0){
rowWidth += 4 - amount;
}
// Do not use IDisposable pattern here as we want to preserve the stream.
EndianBinaryWriter writer = new EndianBinaryWriter(EndianBitConverter.Little, stream);
int bpp = (int) bmpBitsPerPixel;
BmpFileHeader fileHeader = new BmpFileHeader{
Type = 19778, // BM
Offset = 54,
FileSize = 54 + image.Height*rowWidth*bpp
};
BmpInfoHeader infoHeader = new BmpInfoHeader{
HeaderSize = 40,
Height = image.Height,
Width = image.Width,
BitsPerPixel = (short) (8*bpp),
Planes = 1,
ImageSize = image.Height*rowWidth*bpp,
ClrUsed = 0,
ClrImportant = 0
};
WriteHeader(writer, fileHeader);
WriteInfo(writer, infoHeader);
WriteImage(writer, image);
writer.Flush();
}
