[GnomeMeeting-devel-list] about the distributes video

["chentob gcc" <chentob_gcc hotmail com>]

Hi All,
we have been always using OpenMCU in a centralized conference, which 
processes or mixes Audio,Video and Data from termianls, then distributes 
them to the corresponding terminals. Now I need a MCU with the capability 
of Centralized Audio and Distributed Video.  I failed to modify the code of 
OpenMCU to realize it. 
I read the code of openMCU following:
BOOL MyH323Connection::OpenVideoChannel(BOOL isEncoding,
                                       H323VideoCodec & codec)
{
   PStringStream codecName;
   codecName << codec;

   PWaitAndSignal mutex(videoMutex);

    if (isEncoding) {      
     if (outgoingVideo == NULL) {
       outgoingVideo = new OutgoingVideo(ep, *this, ep.videoFramesPS, 
ep.videoLarge);
       codec.AttachChannel(outgoingVideo,FALSE);
//       outgoingVideo->SetFrameSize(352>>1,288>>1);
     }

     /*At last. Modularity. The video codec is told the parameters of 
video compresion/decompression.
       The only thing the video codec knows about the ouside world is how 
to acquire/render data, which
	      is via the video channel, provided by the OutgoingVideo class.
	      
	      The codec does provide a second interface, through which ethernet 
packets enter (or leave) */
     codec.SetTxQualityLevel(ep.videoTxQuality);
     codec.SetBackgroundFill(ep.videoFill);
    
     videoTransmitCodecName = codecName;
   } else {
     if (incomingVideo == NULL) 
       incomingVideo = new IncomingVideo(ep, *this);
       codec.AttachChannel(incomingVideo,FALSE);
       videoReceiveCodecName = codecName;
   }
 
   return TRUE;
}
I known "codec.AttachChannel(outgoingVideo,FALSE);" is encode the video 
,and  "codec.AttachChannel(incomingVideo,FALSE);" is decode the video, how 
I can receive video and not decode video or encode video by itself ? 
Finally send the video to all the endpoints?

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