Re: [GnomeMeeting-list] Color format

[=?big5?q?yumi=20maiko?= <maikoyumi yahoo com hk>]

Hi Damien,

     If the two cameras are in different color format,or even I don't know the color format, how can I mix them together? Do I need to change them to RGB24 separately first before mixing? How to change to RGB24?

     The video_buffer which store the raw data is 3 times the framesize,but the buffer used in openmcu code is 1.5 times. So really can I use the openmcu code to mix the buffer?

    Thanks~~

 

Regards,

wah

 

Damien Sandras <damien sandras it-optics com> wrote:

> Le dim, 21/03/2004 ? 11:47 +0800, yumi maiko a écrit :
>
> > Hi,
> > I am using "BT878(Lifeview FlyVideo 98EZ )" and
> > "Logitech USB Camera". When the data are captured from
> > camera to the video buffer. does anyone know what
> > color format are these two camera used? RGB24 or
> > RGB32? I see that the video_buffer size is 3 times the
>
> It could be any color format supported by GnomeMeeting, you have to look
> at the specs to determine that.
>
> > framesize,it is clearly that it stores RGB data for
> > each pixel. 
>
> We are always using RGB24 to display in GTK, there is thus a conversion
> from the native color format of the camera to RGB24.
>
> > The second question is that, in gnomemeeting, the
> > displayed image data uses YUV420P color format. What
> > color format is changed to YUV420P?
>
>
> The displayed
>  image is RGB24 and is converted from the native color
> format of the camera to RGB24. The native color format depends on the
> camera. 
>
> > 
> > Regards,
> > wah
> > 
> > 
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