[Gtk-sharp-list] Pixbuf image conversion performance < System.Drawing.Image

[Christopher Sawyer]

I noticed that when using Gdk.Pixbuf to do a mass conversion of files from
TIFF to PNG, Pixbuf was horribly slow, especially for large image sizes
(11"x17" @ 600dpi).  I'm using PNG to knock down the size of large TIFF
scans coming in from a high speed scanner.

// Conversion A (Pixbuf)
Pixbuf a = new Pixbuf(myTiffFile);
a.Save("mypng.png", "png");
File.Delete(myTiffFile);

// Conversion B (Image)
System.Drawing.Image b = System.Drawing.Image.FromFile(myTiffFile);
b.Save("mypng.png", System.Drawing.Imaging.ImageFormat.Png);
File.Delete(myTiffFile);


Is just an issue of a poorer/slower implementation of PNG in GTK?
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