Adding XV capabilities to a driver

[Alex Deucher]

On 5/26/07, Helmut Auer <vdr at helmutauer.de> wrote:
> Hello Alex
> >> ...
> >> but xvinfo tells me:
> >>
> >> X-Video Extension version 2.2
> >> screen #0
> >>  no adaptors present
> >>
> >> I cannot see any errors, but xv is not present :(
> >>
> >
> > Make sure that your initvideo() function is called in your driver's
> > screeninit() function and that your initvideo() function actually
> > allocates an adapter and calls xf86XVScreenInit().  Take a look at
> > another driver for an example.  radeon calls RADEONInitVideo() from
> > RADEONScreenInit() and RADEONInitVideo() allocates the Xv adapter and
> > calls xf86XVScreenInit().
> >
> >
> the xf86XVScreenInit will be called ( See code below ).
> The log shows:
> (EE) Tvia(0): Init XvInit (0)
> (EE) Tvia(0): Init XvInit new
> (EE) Tvia(0): num_adaptors:1
>

The function seems to be doing the right thing.  Are you sure your Xv
libs are built properly?  and your driver is linking with the correct
things?

Alex