[Openchrome-users] problems with via xvmc

[Ivor Hewitt]

On Tuesday 06 December 2005 22:43, Thomas Hellstr?m wrote:
> Thomas Hellstr?m wrote:
> > userforum at openchrome.org wrote:
> >> Re: problems with via xvmc
> >>
> >>
> >> Myth uses it's own player as far as I know. I think it is based on
> >> Nuppel Video, I haven't gone into it though. I would hate to be
> >> spending your time trouble shooting a Myth problem, although I can
> >> play these files on the 'backend' system which has an Nvidia card.
> >>
> >> Here's my latest X log,
> >
> > Hmm, that log is from a Nvidia card. Not from a Unichrome.
> >
> > Anyway, this is the situation:
> > It seems like your player is creating an awful lot of surfaces and the
> > only XvMC capable player I know of that is able to do that is Xine. It
> > is possible, however, that Myth can do that as well. Nvidia restricts
> > the number of surfaces to 8, so most players only tries to allocate 8
> > surfaces. Xine optionally allocates 15.
>
> Ah, After some googling it turns out that MythTVs player tries to
> allocate 16 surfaces, and the memory manager can't simply cope with it,
> since HDTV frames are quite big.
>
> So you have two options:
>
> 1) Try EXA acceleration and see if it can squeeze in all 16 surfaces.
> 2) Bring the problem up on the myth mailing list.
>
Hi,

Comment out:- (about line 730)

//      if (vld)
//         xvmc_buf_attr->SetNumSurf(16);

in videoout_xv.cpp

and see if it works then.

-- 
Ivor Hewitt.