DirectDraw YUV overlays

[Matthew Mastracci]

I've been investigating the YUV overlays used by Picasa and it seems 
like it would be a huge problem to tackle this sort of support without 
some sort of external YUV conversion library and/or hardware support.

SDL has great support for transparent hardware/software YUV support; it 
might be possible to adopt some of the YUV hw/sw implementation code 
from SDL into Wine.  Both projects are LGPL.

Whatever the implementation, getting support into the DirectDraw layer 
for scaling YUV surfaces is a fairly large job.

Matt.