使用Jrtplib庫實現服務端和客戶端通訊

程式碼都是直接從jrtplib自帶例子中摳出來的，就是為了方便研究，話不多說直接上菜

/*
   Here's a small IPv4 example for receiver
*/

/*
#include "rtpsession.h"
#include "rtpudpv4transmitter.h"
#include "rtpipv4address.h"
#include "rtpsessionparams.h"
#include "rtperrors.h"
#include "rtplibraryversion.h"
 
*/

#include <jrtplib3/rtpsession.h>
#include <jrtplib3/rtpudpv4transmitter.h>
#include <jrtplib3/rtpipv4address.h>
#include <jrtplib3/rtpsessionparams.h>
#include <jrtplib3/rtperrors.h>
#include <jrtplib3/rtplibraryversion.h>
#include <jrtplib3/rtppacket.h>
#include 
 
<stdlib.h>
#include <stdio.h>
#include <iostream>
#include <string>

using namespace jrtplib;
using namespace std;
//
// This function checks if there was a RTP error. If so, it displays an error
// message and exists.
//

void checkerror(int rtperr)
{
    if (rtperr < 0)
    {
        std
 
::cout << "ERROR: " << RTPGetErrorString(rtperr) << std::endl;
        exit(-1);
    }
}

//
// The main routine
//

int main(void)
{

#ifdef RTP_SOCKETTYPE_WINSOCK
    WSADATA dat;
    WSAStartup(MAKEWORD(2,2),&dat);
#endif // RTP_SOCKETTYPE_WINSOCK

    RTPSession sess;
    uint16_t portbase;
    int status,i,num;

    cout << "Using version " << RTPLibraryVersion::GetVersion().GetVersionString() << endl;
    cout << "Enter local portbase:" << endl;
    cin >> portbase;
    cout << endl;

    // Now, we'll create a RTP session, set the destination, send some
    // packets and poll for incoming data.

    RTPUDPv4TransmissionParams transparams;
    RTPSessionParams sessparams;

    // IMPORTANT: The local timestamp unit MUST be set, otherwise
    //            RTCP Sender Report info will be calculated wrong
    // In this case, we'll be sending 10 samples each second, so we'll
    // put the timestamp unit to (1.0/10.0)

    sessparams.SetOwnTimestampUnit(1.0/10.0);
    sessparams.SetAcceptOwnPackets(true);
    transparams.SetPortbase(portbase);
    status = sess.Create(sessparams,&transparams);

    checkerror(status);

    while (1)
    {
        sess.BeginDataAccess();
        // check incoming packets
        if (sess.GotoFirstSourceWithData())
        {
            do
            {
                RTPPacket *pack;
                while ((pack = sess.GetNextPacket()) != NULL)
                {
                    // You can examine the data here
                    cout << "Got packet !" << endl;
                    cout << pack->GetPayloadData() << endl;
                    // we don't longer need the packet, so
                    // we'll delete it
                    sess.DeletePacket(pack);
                }
            } while (sess.GotoNextSourceWithData());
        }
        sess.EndDataAccess();

#ifndef RTP_SUPPORT_THREAD
        status = sess.Poll();
        checkerror(status);
#endif // RTP_SUPPORT_THREAD

        RTPTime::Wait(RTPTime(1,0));
    }
    sess.BYEDestroy(RTPTime(10,0),0,0);

#ifdef RTP_SOCKETTYPE_WINSOCK
    WSACleanup();
#endif // RTP_SOCKETTYPE_WINSOCK

    return 0;
}

/*
   Here's a small IPv4 example for client
*/

/*
#include "rtpsession.h"
#include "rtpudpv4transmitter.h"
#include "rtpipv4address.h"
#include "rtpsessionparams.h"
#include "rtperrors.h"
#include "rtplibraryversion.h"
*/

#include <jrtplib3/rtpsession.h>
#include <jrtplib3/rtpudpv4transmitter.h>
#include <jrtplib3/rtpipv4address.h>
#include <jrtplib3/rtpsessionparams.h>
#include <jrtplib3/rtperrors.h>
#include <jrtplib3/rtplibraryversion.h>
#include <jrtplib3/rtppacket.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <string>

using namespace jrtplib;
using namespace std;

//
// This function checks if there was a RTP error. If so, it displays an error
// message and exists.
//

void checkerror(int rtperr)
{
    if (rtperr < 0)
    {
        std::cout << "ERROR: " << RTPGetErrorString(rtperr) << std::endl;
        exit(-1);
    }
}

//
// The main routine
//

int main(void)
{

#ifdef RTP_SOCKETTYPE_WINSOCK
    WSADATA dat;
    WSAStartup(MAKEWORD(2,2),&dat);
#endif // RTP_SOCKETTYPE_WINSOCK

    RTPSession sess;
    uint16_t portbase,destport;
    uint32_t destip;
    string ipstr;
    int status,i,num;

    cout << "Using version " << RTPLibraryVersion::GetVersion().GetVersionString() << endl;

    // First, we'll ask for the necessary information
    cout << "Enter local portbase:" << endl;
    cin >> portbase;
    cout << endl;
    cout << "Enter the destination IP address" << endl;
    cin >> ipstr;

    destip = inet_addr(ipstr.c_str());

    if (destip == INADDR_NONE)
    {
        cerr << "Bad IP address specified" << endl;
        return -1;
    }

    // The inet_addr function returns a value in network byte order, but
    // we need the IP address in host byte order, so we use a call to
    // ntohl

    destip = ntohl(destip);
    cout << "Enter the destination port" << endl;
    cin >> destport;
    cout << endl;
    cout << "Number of packets you wish to be sent:" << endl;
    cin >> num;

    // Now, we'll create a RTP session, set the destination, send some
    // packets and poll for incoming data.

    RTPUDPv4TransmissionParams transparams;
    RTPSessionParams sessparams;

    // IMPORTANT: The local timestamp unit MUST be set, otherwise
    //            RTCP Sender Report info will be calculated wrong
    // In this case, we'll be sending 10 samples each second, so we'll
    // put the timestamp unit to (1.0/10.0)

    sessparams.SetOwnTimestampUnit(1.0/10.0);
//    sessparams.SetAcceptOwnPackets(true);
    transparams.SetPortbase(portbase);
    status = sess.Create(sessparams,&transparams);
    checkerror(status);
    RTPIPv4Address addr(destip,destport);
    status = sess.AddDestination(addr);

    checkerror(status);

    for (i = 1 ; i <= num ; i++)
    {
        printf("\nSending packet %d/%d\n",i,num);
        // send the packet
        status = sess.SendPacket((void *)"1234567890",10,0,false,10);
        checkerror(status);

#ifndef RTP_SUPPORT_THREAD
        status = sess.Poll();
        checkerror(status);
#endif // RTP_SUPPORT_THREAD

        RTPTime::Wait(RTPTime(1,0));
    }
    sess.BYEDestroy(RTPTime(10,0),0,0);

#ifdef RTP_SOCKETTYPE_WINSOCK
    WSACleanup();
#endif // RTP_SOCKETTYPE_WINSOCK

    return 0;
}