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

[Matthias Schneider <ma30002000 yahoo de>]

--- Gregory Stark <gsstark mit edu> schrieb:

> 
> Matthias Schneider <ma30002000 yahoo de> writes:
> 
> > 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.
> 
> Well sadly that's a bit overoptimistic. I only said that there existed some
> graphics cards whose drivers provided multiple overlays. There are certainly
> still cards, even brand new cards, whose drivers don't. Including, for
> example, my brand new ATI :( It may just be because the driver is relatively
> new or it may be a hardware limitation, I don't know.
> 
> Because the overlay is so much better it may be worth indicating to the user
> when a window doesn't use an overlay. (preferably not in a popup window
> though!). Otherwise the user may have no idea that disabling PIP would make
> his display much smoother. (Or he may just say "ekiga PIP sucks" rather than
> "my graphics card sucks but at least ekiga is making the most of it")
> 
> -- 
> greg
> 
Hi Gregory,
it seems I was mistaken on the port-issue, I found out that all the systems I saw with multiple
ports (mine has 33) where systems with the closed-source nvidia driver (I spotted some matrox as
well if I remember correctly). 

In the meantime I have made some advances on the virtual PVideoOutputDevice_ekiga, which now
allows to fall back to the GDK/SDL output in case XV failes to initialize. About an XV PiP window
I can think of the following fallback options:
 1) we simply dont display the local picture
 2) we scale the local picture into the remote one by software and scale the resulting picture in
hardware
 3) we fall back to GDK/SDL completely

Right now my implemention works like 1), which is what I personally prefer, since all the exercise
was to prevent software scaling. However I would be open to other opinions and suggestions.. I
dont know how it is possible to signal the state of acceleration by a non popup means, one idea
would be to put something into the window title in case the video is displayed in an external
window (e.g. "Video - XV") so it is possible to differ by other means except the resulting
quality... Any idea how that could be possible in the incrusted modes?

Well, right now I am working on the integration with the menus of ekiga (fullscreen, 200%, etc)
and as a last big bite I still have the GDK-incrusted XV window to investigate, which seems to be
more complicated than it sounds...

Thats all for now,
Matthias



		
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