public static async Task <TiffHeader> ReadHeaderAsync(Stream stream)
{
var bytes = await stream.ReadBytesAsync(SIZEOF_HEADER);
ByteOrder byteOrder = ReadHeader_ByteOrder(bytes);
int magicNumber = DataConverter.ToInt16(bytes, 2, byteOrder);
TiffIfdReference firstIfdReference = new TiffIfdReference(DataConverter.ToUInt32(bytes, 4, byteOrder));
if (magicNumber != 42)
{
throw new ImageFormatException("The TIFF header does not contain the expected magic number.");
}
return(new TiffHeader {
ByteOrder = byteOrder, FirstIfdReference = firstIfdReference
});
}
public static Task <TiffIfd> ReadIfdAsync(TiffIfdReference ifdReference, Stream stream, ByteOrder byteOrder)
{
stream.Seek(ifdReference.Offset, SeekOrigin.Begin);
return(ReadIfdAsync(stream, byteOrder));
}
