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

["mcquaid mcquaid" <mcquaidster gmail com>]

I'm just a user but with a couple of questions.  I thought that sdl can have access to hardware overlay?  Also, I thought that only 1 window can have access to hardware overlay, so how is pip dealt with in this regard?

On 9/11/06, Matthias Schneider <ma30002000 yahoo de> wrote:

Hi all,
a few months I had posted an email about integrating XVideo hardware acceleration into ekiga,
unfortunately I didnt find some time until a few weeks ago...

The image quality of XVideo is a lot better than SDL, also CPU drops significantly since the
dedicated hardware does the scaling and colorspace transform.

Enclosed I am sending a patch for ekiga 2.0.2. After applying, please run

patch -p1 < ekiga-2.0.2-xv-1.5.patch
aclocal
automake
autoconf
configure
./configure [-disable-xv]
make

The XV support may be disabled at compile time with configure --disable-xv (or if the respective
libraries are not found).

Right now the XV implementation creates separate video windows that may be put into fullscreen
with the key "f", be made to stay on top with "o" and feature removable decorations "d".

I would like to raise a discussion about some of the issues that I have not yet resolved:

- window coordinates:
  Where should the Video windows be located? Right now they appear in the upper left corner of the
screen...

- get the -display command line parameter
  Right now the XVWindows will be created on the DefaultDisplay. I would prefer making them appear
on the display specified on the command line (if it was specified)

- ptrace levels
  right now all PTRACEs are sent on level 1, however some messages are warnings, other pure debug
information. Could someone educate me about the respective levels?

- layout of video windows
  Right now all XV displaying makes use of a separate X-only window. I would like to ask if we
could review the display modes in ekiga, right now we have:
  local only
  remote only
  Picture inPicture
  SideBySide
  Two windows
  Fullscreen
  I find myself am only using fullscreen or a picture-in-picture in a separate window (which is
missing from this list). I think it should be possible to paint XVideo into GTK windows knowing
the X-Windows handle for th respectire window, so possibly XV may be displayed inside ekigas main
window as well. However up to now, my efforts where unsuccessfull...
  Shall we add the PIP in external window? Shall we stick to all the others as well? What about
the zoom stuff? My windows are freely resizable, no need for the 2x or 0.5x menu entries.. Also
what about the Fullscreen menu entry? XV supports it, but what if we compiled with XV and have to
fallback to gdk and have no SDL compiled in?

- fallback to gdk if XV is not available
  The XVWindow classes init procedure returns NULL if XV cannot be properly initialized. In that
case a GDK renderer should be registered instead of the XV renderer.
  Right now however I do not have the slightest clue how to do that, because the setframedata
function is called from opal, and I think it would be quite ugly to touch opal for such a feature.
  The PVideoOutputDevice constructor is called to early (startup) for opening the window already.
  How can we get the GDK output device registered in case XV is not available at run time (another
program using it and the graphics adaptor supporting only one XV port for example)
It would be really cool if I could get some support from someone who knows ekigas code better than
me..

  I also have an nearly similar DirectX class waiting for ekiga, hopefully I will find some time
soon. Please let me know what you think about this XV class,

bye
Matthias



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