Re: [Linux-fbdev-devel] Re: FB, video, FOURCC code

[Sven <lu...@dp...>]

On Fri, Sep 28, 2001 at 09:48:52AM +0400, Nick Kurshev wrote:
> Hello, Romain!
> On Thu, 27 Sep 2001 11:31:25 +0200, you wrote:
> 
> > Romain Dolbeau wrote:
> > 
> > > Still, I guess I should use them ; I think I could add
> > > a 'number of FOURCC supported' field in the
> > > "struct fb_vidoverlay_avail", and add (yet) another
> > > ioctl to get only the variable-length FOURCC list.
> > 
> > F-up myself, here's an updated file. The sample implementation
> > in pm3fb compile (not near thebox, can't test it yet :-)
> > 
> > Any comment/criticism/improvement/advice very much welcome.
> > 
> > -- 
> > DOLBEAU Romain               | l'histoire est entierement vraie, puisque
> > ENS Cachan / Ker Lann        |     je l'ai imaginee d'un bout a l'autre
> > do...@ir...             |           -- Boris Vian
> Well, it seems - o'k.
> I'm not sure - but what about having a support of hardware accelerated
> decoding? (I mean such things as mpeg1, mpeg2 decoding, de-zigzag and so on)
> Unfortunatelly I never saw any opensource project which has implementation
> of such things but if you know how it should be implemented then such extensions
> are gladly accepted too.

mmm, The Xv extension to X does this.

That said, i guess the problem here would be the same as for generic accels in
the kernel, that is it will not go in. Most probably, a userland library would
need to be created which could cooperate with the fbdev driver.

Friendly,

Sven Luther