Re : Re : Intel - XVideo
eallaud at yahoo.fr
Wed Jun 13 17:45:28 PDT 2007
On 06/13/2007 03:25:22 PM, Lukas Hejtmanek wrote:
> On Wed, Jun 13, 2007 at 03:20:41PM -0400, manu wrote:
> > >Is it technically possible to change brightness and contrast on
> > >textured
> > >videos (preferably independently of the rest of the screen)?
> > The is a matrix in the code to do the YUV-> RGB conversion, so I
> > that you could just have the coefficients dependant upon parameters
> > get the brightness/contrast changeable.
> > Just a wild guess as I am stuck with a i855 for now ;-)
> Yeah, I thought so. But the matrix is used only if YUV is in planar
> mode and
> currently, planar mode is converted to packed mode before calling
> video thus the matrix is not used at all.
Hmm, OK. But how is the conversion done then? Does the packed video get
sent as is and the hw deals with it directly?
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