[vlc-devel] Re: YUV Surfaces

Dan Macpherson dan at ecks.org
Thu Oct 24 00:21:01 CEST 2002


Document of YUV420 surfaces (see figure 4):
http://www.unixinu.co.uk/articles/adc2jpg.html

would it be worth writing a conversion function for YUV420->YUV422?
does a conversion library like that exist already? maybe..
the conversion could be highly optimized.

>
> Yes but please bear in mind that we don't use any surface, we need a 
> YUV 420 overlay surface, which is quite different from RGB surfaces. 
> Apparently there are things about YUV surfaces, but (as usual) nothing 
> is documented.
>
> Besides, I'm not sure we can improve speed a lot, since we're already 
> using a YUV acceleration from QuickTime which is quite efficient.
>
> -- 
> Christophe Massiot.
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