Re: [GnomeMeeting-list] Urgent:Multi-camera

[Damien Sandras <damien sandras it-optics com>]

Le ven, 12/03/2004 à 12:19 +0800, yumi maiko a écrit :

> Hi Damien,
>    Yes,you 're right.I am having my assignment.It's so
> hard for me :(
>    I believe that your idea is the easiest and fastest
> way for me to follow. However,I still get some
> problems.As you said, I should begin at modifying the
> plugin in pwlib instead of gnomemeeting source
> code,right?You taught me to combine images from

Right. I would take the V4L plugin as basis.

> several video input devices together and returned to
> gnomemeeting. Um...I found that pwlib only returns the
> PStringList and PVideoInputDevice. As there are some
> functions in gnomemeeting source code to convert the
> input data into image format. Do I need to modify
> gnomemeeting to combine images? 

No, do that in the pwlib code. You can also use vconvert.cxx to convert
between several image formats. Also, look at the code of openmcu
available on openh323.org to have examples of image manipulation.

> Or could you suggest a starting point for me?
> Thanks for helping me alot!!
> 
> Regards,
> wah
> 
> 
> 
> 
> 
>  --- Damien Sandras <dsandras seconix com>
> 的郵件內容：> Hi,
> > 
> > I guess you are students and you have an assignment,
> > right?
> > 
> > My idea would be to create a new video plugin called
> > "MultiCamera" that
> > returns a predefined device "CameraArrays". It would
> > simply be an
> > enhancement of the V4L plugin, but reading from
> > multiple devices at the
> > same time. The trick is to mix together all the
> > images from the various
> > devices and to return only one unique mixed image to
> > GnomeMeeting.
> > 
> > The only problem you will have is to find a common
> > color format for all
> > cameras if they are different.
> > 
> 
> 
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-- 
 _      Damien Sandras
(o-     
//\     It-Optics s.a.
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