/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact vocal@vovida.org.
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
 * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 * 
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */

static const char* const maxPlaying_cxx_Version =
    "$Id: maxPlaying.cxx,v 1.6 2001/05/13 08:33:20 icahoon Exp $";
// for only sending out packets

#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <fstream>
#include <stdio.h>
#include "rtpTypes.h"
#include "RtpSession.hxx"
#include "TimeTracker.hxx"

int main (int argc, char *argv[])
{
    // allocate and initialize default configuration values
    // note, you may need to create two executable, each with the
    // others address info
    char rmtHost[256] = "vvs-tabletennis";
    int max_sessions = 100;
    int rmtPort = 7000;
    int lclPort = 5000;
    int apSize = 160;
    int npSize = 160;
    int numPkts = 10000;

    TimeTracker T(cerr);

    if (argc == 1)
    {
        cout << "Usage: ./maxRtpSessions host sessions rmt_start_port lcl_start_port num_packets" << endl;
        return 0;
    } 
    else if (argc == 6)
    {
        strcpy( rmtHost, argv[1] );
        max_sessions = atoi( argv[2] );
        rmtPort = atoi( argv[3] );
        lclPort = atoi( argv[4] );
        numPkts = atoi( argv[5] );
    }
    else
    {
        printf("Enter remote hostname: ");
        scanf ("%s", rmtHost);
        printf("Enter number of the max rtp sessions: ");
        scanf ("%d", &max_sessions);
        printf("Enter remote port number: ");
        scanf ("%d", &rmtPort);
        printf("Enter local port number: ");
        scanf ("%d", &lclPort);
        printf("Enter number of packets sending or receiving: ");
        scanf ("%d", &numPkts);
    }

    pid_t pid;

    for (int j=0; j < max_sessions; j++)
    {
//        sleep(1);
        if ((pid = fork()) < 0)
        {
            cerr << "Fork failed." << endl;
            return -1;
        }
        else if (pid == 0)
        {
            cout << "Get pid is: " << getpid() <<endl;
            cout << "Creating rtp session " << j << endl;


            RtpSession* stack = new RtpSession ( rmtHost, 
                                     rmtPort + 2*j, lclPort + 2*j,
                                     rmtPort + 2*j + 1, lclPort + 2*j + 1, 
                                     rtpPayloadPCMU, rtpPayloadPCMU, 5);
        
            char outBufferPkt[480];
            struct timeval t1, t2;
        
            memset(outBufferPkt, 0, 480);
            strncpy (outBufferPkt, "data", 5);
        
            stack->setApiFormat (rtpPayloadPCMU, apSize);
            stack->setNetworkFormat (rtpPayloadPCMU, npSize);
        
            int i=0;
            long long delta;
//            int x = 1;
            int sleeptime = 16;

            gettimeofday(&t1, 0);
            T.startTime();
            while (i < numPkts)
            {

                stack->transmitRaw (outBufferPkt, 160);
                i++;
        
                // send and receive RTCP packet
                if (stack->checkIntervalRTCP())
                {
                    stack->transmitRTCP();
                }
                if (stack->receiveRTCP() == 0 )
                {
                }

                if (sleeptime > 0)
                {
                    usleep (sleeptime * 1000);  // 20 msec
//                    cerr << "sleeptime = " << sleeptime << endl;
                }
                else
                {
//                    cerr << "no sleep" << endl;
                }

                gettimeofday(&t2, 0);
                delta = ((t2.tv_sec - t1.tv_sec) * 1000000 +
                       (t2.tv_usec - t1.tv_usec))/1000;
                sleeptime = (i+1)*20 - delta;
                if (i == (numPkts-2)) sleeptime=0;
                
        
/*
                gettimeofday(&t2, 0);
                delta = ((t2.tv_sec - t1.tv_sec) * 1000 +
                       (t2.tv_usec/1000 - t1.tv_usec/1000));

                x = deta/20 - i;
                for (int k = 0; k < x; k++)
                {
                    // to Catch up the packets sending due to usleep drifting
                    stack->transmitRaw (outBufferPkt, 160);
                    i++;
                    cerr << "c" ;
                }
                cerr << endl;
*/
        
            }
        

            T.endTime();

            sleep (9);
            stack->transmitRTCPBYE();
            delete stack;
            stack = NULL;

            cout << "End rtp session " << j << endl;
            return 3;
        }
    }

    return 0;
}