phonejack.cxx

SIP（Session Initiation Protocol）是由IETF定义

/* ====================================================================
 * 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 [e-mail].
 *
 * 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 phoneJack_cxx_Version =
    "$Id: phoneJack.cxx,v 1.12 2001/03/23 19:19:08 wjin Exp $";
#include <iostream.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>


#include "ixjuser.h"
#include "RtpSession.hxx"
#include "cpLog.h"

#define ULAW_PAYLOAD 240
#define RESID_RTP_RATE 240
#define NETWORK_RTP_RATE 160

static int deviceFD;
RtpSession* audioStack;
RtpPacket* outRtpPkt;
RtpPacket* inRtpPkt;

int audioStart (char* rmtHost, int rmtPort, int lclPort)
{
    cerr << "%%%   Starting audio   %%%\n";

    deviceFD = open("/dev/phone0", O_RDWR);

    audioStack = new RtpSession(rmtHost, rmtPort, lclPort, rmtPort + 1,
                                lclPort + 1, rtpPayloadPCMU, rtpPayloadPCMU, 5);
    assert(audioStack);

    outRtpPkt = audioStack->createPacket();
    assert (outRtpPkt);
    inRtpPkt = NULL;

    audioStack->setApiPktSize (RESID_RTP_RATE);
    audioStack->setNetworkPktSize (NETWORK_RTP_RATE);

    ioctl(deviceFD, IXJCTL_PLAY_CODEC, ULAW);
    ioctl(deviceFD, IXJCTL_REC_CODEC, ULAW);

    ioctl(deviceFD, IXJCTL_PLAY_START);
    ioctl(deviceFD, IXJCTL_REC_START);

    ioctl(deviceFD, IXJCTL_AEC_START, 1);
    cpLog (LOG_DEBUG, "echoCancellation is on");

    ioctl(deviceFD, IXJCTL_MIXER, 0x0C03);   // 06 is too soft
    ioctl(deviceFD, IXJCTL_MIXER, 0x0F01);   // 02 is too soft

    return 0;
}


int audioStop ()
{
    cerr << "%%%   Stopping audio   %%%\n";

    // make hardware calls to stop audio
    ioctl(deviceFD, IXJCTL_REC_STOP);
    ioctl(deviceFD, IXJCTL_PLAY_STOP);
    ioctl(deviceFD, IXJCTL_AEC_STOP);

    close(deviceFD);
    deviceFD = open("/dev/phone0", O_RDWR);
    if (deviceFD < 0)
    {
        cerr << "Cannot reopen /dev/phone0" << endl;
        exit(1);
    }

    // close RTP session
    audioStack->transmitRTCPBYE();

    delete audioStack; audioStack = NULL;

    delete outRtpPkt; outRtpPkt = NULL;
    if (inRtpPkt)
    {
        delete inRtpPkt;
        inRtpPkt = NULL;
    }

    return 0;

}

int main (int argc, char* argv[])
{
    audioStart(argv[1], atoi(argv[2]), atoi(argv[3]));
    usleep(1000);

    cpLogSetLabel ("sampleUsage");
    cpLogSetPriority (LOG_DEBUG);


    int rtpFD = (audioStack->getRtpRecv())->getSocketFD();
    int rtcpFD = (audioStack->getRtcpRecv())->getSocketFD();
    int maxFD = 0;

    if ( (rtpFD < 0) || (rtcpFD < 0) )
        printf("failure on RTP socket\n");

    fd_set rfds;
    struct timeval tv;

    tv.tv_sec = 0;
    tv.tv_usec = 300;

    if ( maxFD < deviceFD ) maxFD = deviceFD;
    if ( maxFD < rtpFD) maxFD = rtpFD;
    if ( maxFD < rtcpFD) maxFD = rtcpFD;
    maxFD++;

    int hook, retval, cc;

    printf("Waiting for hookswitch\n");
    hook = ioctl(deviceFD, IXJCTL_HOOKSTATE);
    while (hook != 1)
    {
        hook = ioctl(deviceFD, IXJCTL_HOOKSTATE);
    }

    //    while ( (hook = (ioctl(deviceFD, IXJCTL_HOOKSTATE))) )
    while (1)
    {
        FD_ZERO(&rfds);
        FD_SET(rtpFD, &rfds);
        FD_SET(rtcpFD, &rfds);
        FD_SET(deviceFD, &rfds);
        tv.tv_sec = 0;
        tv.tv_usec = 300;

        retval = select(maxFD, &rfds, NULL, NULL, &tv);

        if (retval >= 0)
        {
            usleep(0);
            if ( hook != (ioctl(deviceFD, IXJCTL_HOOKSTATE)) )
            {
                break;
            }

            //        if (FD_ISSET(rtpFD, &rfds))                // read data from network
            //        {
            inRtpPkt = audioStack->receive();
            if (inRtpPkt)
            {
                //                cerr << "r";
                //                assert (inRtpPkt->getPayloadUsage() == RESID_RTP_RATE);
                write (deviceFD, inRtpPkt->getPayloadLoc(),
                       inRtpPkt->getPayloadUsage());

                delete inRtpPkt;
                inRtpPkt = NULL;
            }
            else
            {
                //                cerr << "n";
            }
            //        }

            //        if (FD_ISSET(deviceFD, &rfds))        // read data from phone
            //        {

            cc = read (deviceFD, outRtpPkt->getPayloadLoc(), RESID_RTP_RATE);
            if (cc > 0)
            {
                //                assert (cc == RESID_RTP_RATE);
                outRtpPkt->setPayloadUsage(cc);
                //                outRtpPkt->setRtpTime(dataStack.getPrevRtpTime() + 240);
                audioStack->transmit(outRtpPkt);
                //                cerr << "t";
            }

            else
            {
                //                cerr << "m";
            }
            //        }


            audioStack->processRTCP();
        } /* if (retval >=0) */

    } /* end while() */

    audioStop();

}