[Open2x-devel] SDL YV12 overlay support

[U. N. O. <ri...@ho...>]

> >This would be better than the current software-only solution.  I 
>personally
>
> >don't need YV12 support right now, but if someone else wants to tackle
> >this, I would be happy to provide the algorithm to convert YV12 to YUY2 
>and
>
> >also provide some advice on how best to accomplish this.
>
>As I am the one that would like it I am happy to have a go at implementing
>this as and when. If you're happy to provide a little help now and then 
>that
>would be wonderful as I am learning as I go.

Ok, I _now_ am interested in getting hardware YV12 surfaces working.

I've read the MMSP2 PDF manual and I think I understand everything in there 
(so far) about using the FDC to convert YV12 to YUY2 except the source 
address part.  All I see is a base offset, X offset, and Y offset for the 
Luminance, Cb, and Cr planes.  Offset from what?  hehe... I was hoping I 
could provide a 32-bit absolute memory address but that doesn't seem the 
case.  Any ideas on how to provide the source address?

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