public bool Convert(FilterRequest req)
{
Uri source = req.Current;
using (ImageFile img = ImageFile.Create(source)) {
Pixbuf pixbuf = img.Load();
Profile profile = img.GetProfile();
Adjustment adjustment = CreateAdjustment(pixbuf, profile);
Gdk.Pixbuf final = adjustment.Adjust();
Uri dest_uri = req.TempUri(Path.GetExtension(source.LocalPath));
using (Stream output = File.OpenWrite(dest_uri.LocalPath)) {
img.Save(final, output);
}
final.Dispose();
req.Current = dest_uri;
return(true);
}
}