public AdobeJpegDirectory Extract(SequentialReader reader)
{
reader.IsMotorolaByteOrder = false;
var directory = new AdobeJpegDirectory();
try
{
if (reader.GetString(Preamble.Length) != Preamble)
{
directory.AddError("Invalid Adobe JPEG data header.");
return directory;
}
directory.Set(AdobeJpegDirectory.TagDctEncodeVersion, reader.GetUInt16());
directory.Set(AdobeJpegDirectory.TagApp14Flags0, reader.GetUInt16());
directory.Set(AdobeJpegDirectory.TagApp14Flags1, reader.GetUInt16());
directory.Set(AdobeJpegDirectory.TagColorTransform, reader.GetSByte());
}
catch (IOException ex)
{
directory.AddError("IO exception processing data: " + ex.Message);
}
return directory;
}
