[Libva] the position in x-direction of the first mb

[Xiang, Haihao]

On Wed, 2009-09-16 at 00:26 +0800, Bian, Jonathan wrote:
> The "first_mb_in_slice" field can be used to derive the slice vertical/horizontal positions.
Oh, yeah. Thank you.

Haihao

> -----Original Message-----
> From: libva-bounces at lists.freedesktop.org [mailto:libva-bounces at lists.freedesktop.org] On Behalf Of Xiang, Haihao
> Sent: Tuesday, September 15, 2009 1:20 AM
> To: Gwenole Beauchesne
> Cc: 'Libva at lists.freedesktop.org'
> Subject: Re: [Libva] the position in x-direction of the first mb
> 
> On Tue, 2009-09-15 at 15:54 +0800, Gwenole Beauchesne wrote:
> > Hi,
> > 
> > On Tue, 15 Sep 2009, Xiang, Haihao wrote:
> > 
> > >> FYI, I have applied the following patch to my tree and updated the
> > >> compat glue. MPlayer/VAAPI was also updated to cope with this
> > >> addition. Please tell me if this also works for you there so that I
> > >> can propagate the patch to upstream.
> > >>
> > > Sorry for delayed reply. Thanks for your help, it works for us. Could 
> > > you add similar fields to other slice parameter structure, such as H264?
> > 
> > Thanks for testing, I have just propagated the patches to upstream.
> > 
> > I don't see this field needed for H.264 but VC-1 might. It would be better 
> > if you could test it for those codecs first because it would be difficult 
> > for me to predict your needs or even test myself. e.g. the H.264 codec is 
> > not available yet in the G45 VAAPI tree. ;-)
> We are adding support for H.264 in i965_drv_video. The documentation
> says that slice vertical/horizontal position is also needed for H.264 on
> G45.
> 
> Thanks
> Haihao
> 
> > 
> > BTW, for H.264 wrt. FFmpeg, I still need to fix some things so it's better 
> > to not consider it as a reference implementation. First, I would have to 
> > check exactly the needs of GMA500 and IEGD drivers because they seem to be 
> > stricter than those for AMD or NVIDIA drivers.
> > 
> > Regards,
> > Gwenole.
> 
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