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List:       freedesktop-xorg
Subject:    Re: XV: Making use of Radeon's YV12 scaler
From:       Tilman Sauerbeck <tilman () code-monkey ! de>
Date:       2006-01-29 9:34:12
Message-ID: 20060129093411.GA15426 () code-monkey ! de
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Alex Deucher [2006-01-25 20:12]:
> On 1/8/06, Tilman Sauerbeck <tilman@code-monkey.de> wrote:
> > Hi,
> > I noticed that the Radeon's driver support for YUV420 just sucks
> > (it's going through software conversion from YUV420 to YUV422) ;)
> >
> > Radeon has a YV12 BES though, which I think can be used for this.
> > I tried to use that YV12 scaler, but I cannot get it to work properly.
> > All I get is b/w video output (which tells me it cannot be *that* much
> > off).
> 
> perhaps the UV need to be swapped?  try this out (based on your code, untested):
> 
> #       define  RADEON_OV0_SWAP_UV                 (1<<5)
> [snip]

Thanks for your replay. Unfortunately, setting the SWAP_UV bit doesn't
seem to affect the output at all.

Regards,
Tilman

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