[MPlayer-dev-eng] A question about MPEG-2 XvMC

[Cooper Yuan]

Thanks Reimar,

get it, so driver doesn't need to convert raster-scan order to zig-zag, it
could set bConfigHostInverseScan as 1 and use DXVA_TCoef4Group to send
coefficient data to hardware.
is it right?
Thanks!

Cooper

On Sat, Jun 20, 2009 at 6:15 PM, Reimar Döffinger
<Reimar.Doeffinger at gmx.de>wrote:

> On Sat, Jun 20, 2009 at 09:00:05AM +0800, Cooper Yuan wrote:
> > I want to say, the coefficient data go through raster-scan --> zig-zag
> -->
> > raster-scan. rarely redundant.
>
> No, that's only the case if you set bConfigHostInverseScan to 0 in DXVA.
> Which is not the case for the example you gave (2.jpg).
> If you use DXVA_TCoef4Group you only need to set up the indexes once and
> then memcpy the coefficients.
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