cbkrtp.c

h323源代码的另一部分

///////////////////////////////////////////////////////////////////
//
// cbkrtp.c
//
// processing module for callbacks from RTP
//
// Copyright Netergy Microelectronics  2000, 2001
//
////////////////////////////////////////////////////////////////////
#include <NNstyle.h>

#include "stdio.h"
#include "rtpapi.h"
#include "common.h"
#include "endpoint.h"

///////////////////////////////////////////////////////////////////
// _RTPInstanceCB
//   ASYNCHRONOUS notification callback from RTP Instance
//     hRtpInstance - RTP instance handle
//     dwUserData - pointer to user data
//     eMsg - callback type
//     pData - callback specific data     
////////////////////////////////////////////////////////////////////
LONG _RTPInstanceCB(H_PROTOCOL_INSTANCE hRtpInstance,
                    DWORD dwUserData,
                    E_RTP_CBKMSG eMsg,
                    RTP_CBKDATA *pData)
{
  CALL *pCall = (CALL*)dwUserData;

  switch(eMsg) {
  case RTP_CBKMSG_PACKETTX:
    if (pCall->dwLength > 0) {
      pData->PacketTx.oPayload = pCall->oPayload;
      pData->PacketTx.dwRTPTimeStampTx = pCall->dwTimeStamp;
      pData->PacketTx.bMarker = pCall->bMarker;
      pData->PacketTx.dwLength = pCall->dwLength;
      memcpy(pData->PacketTx.poData, pCall->achData, pCall->dwLength);
      pCall->dwLength = 0;
    } else {
      pData->PacketTx.dwLength = 0;
    }
    break;
    
  case RTP_CBKMSG_PACKETRX:
    // Save packet
    pCall->dwTimeStamp = pData->PacketRx.dwRTPTimeStampRx;
    pCall->oPayload = pData->PacketRx.oPayload;
    pCall->bMarker = pData->PacketRx.bMarker;
    pCall->dwLength = pData->PacketRx.dwLength;
    memcpy(pCall->achData, pData->PacketRx.poData, pData->PacketRx.dwLength);
    break;
    
  default: 
    break;
  }
  
  return PROTOCOL_SUCCESS;
}


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