Re: [Ekiga-devel-list] preliminary patch for X-Video support

[Matthias Schneider <ma30002000 yahoo de>]

--- Stefan Brüns <lurch gmx li> schrieb:

> Am Dienstag, 12. September 2006 18:31 schrieb Matthias Schneider:
> > Hi, sure, SDL can provide hardware overlay with the following constraints:
> >
> > 	- only available when run as root
> > 	- only DGA driver (framebuffer in console mode)
> > 	- acceleration only available at fullscreen
> > 	- tries to switch to a resolution close to the overlay resolution
> 
> SDL can use XV for hardware accel. But it is complicated (you have to make 
> sure you use a supported colorformat, otherwise it falls back to software.) 
> 
> But I would be glad if Ekiga/pwlib had one dependency less (it is a little bit 
> strange, pwlib is a portability library, and SDL as well, and only the video 
> part of SDL is used, and even using SDL you have to do a lot of platform 
> specific stuff.)

Hello Stefan,
I also heard about SDL using XV, but I never found any official documentation about this one, Do
you have some links to share? I am just curious... Also I did some tests and I never got any
acceleration out of SDL, it always reported no capabilities although I was trying to use a YUV420P
surface that is supported by my XV driver... Another question just being curious, does ekiga run
accelerated on your system?

Anyway, I agree with you on the dependency issue...

> > Just the first issue (see
> > http://www.libsdl.org/faq.php?action=listentries&category=3#31
> > ) rules out SDL under linux. Furthermore the GDK/SDL implementation does
> > the colorspace transform in software..
> > Concerning the PIP issue, as Gregory already pointed out correctly every
> > recent X graphics adaptor driver should support multiple overlays. In case
> > the second overlay shouldnt be possible, my implementation simply doesnt
> > display it.
> 
> Nope
> 
> xdpyinfo:
> X.Org version: 6.8.2
> xvinfo:
> X-Video Extension version 2.2
> screen #0
>   Adaptor #0: "ATI Radeon Video Overlay"
>     number of ports: 1
> 
> This is an Mobility 9000 aka rv250, using the "radeon" (opensource) driver.
> 
> Might be different with a newer xorg version.

see my other mail about this one...

> 
> Stefan


Matthias


	

	
		
___________________________________________________________ 
Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail: http://mail.yahoo.de