# ccrtptest.cpp

    // test ccRTP functionality
    // Copyright (C) 2004 Federico Montesino Pouzols <fedemp@altern.org>
    //
    // This program is free software; you can redistribute it and/or modify
    // it under the terms of the GNU General Public License as published by
    // the Free Software Foundation; either version 2 of the License, or
    // (at your option) any later version.
    //
    // This program is distributed in the hope that it will be useful,
    // but WITHOUT ANY WARRANTY; without even the implied warranty of
    // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    // GNU General Public License for more details.
    //
    // You should have received a copy of the GNU General Public License
    // along with this program; if not, write to the Free Software
    // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    #include <cstdlib>
    #include <ccrtp/rtp.h>

    #ifdef  CCXX_NAMESPACES
    using namespace ost;
    using namespace std;
    #endif

    class PacketsPattern
    {
    public:
        inline const InetHostAddress& getDestinationAddress() const
            { return destinationAddress; }

        inline const tpport_t getDestinationPort() const
            { return destinationPort; }

        uint32 getPacketsNumber() const
            { return packetsNumber; }

        const unsigned char* getPacketData(uint32 i)
            { return data; }

        const size_t getPacketSize(uint32 i)
            { return packetsSize; }

    private:
        static const InetHostAddress destinationAddress;
        static const uint16 destinationPort = 34566;
        static const uint32 packetsNumber = 100;
        static const uint32 packetsSize = 100;
        static unsigned char data[65535];
    };

    const InetHostAddress PacketsPattern::destinationAddress =
        InetHostAddress("localhost");

    unsigned char PacketsPattern::data[65535];

    PacketsPattern pattern;

    class Test
    {
    public:
        virtual int doTest() = 0;
    };

    class SendPacketTransmissionTest : public Test, public Thread, public TimerPort
    {
    public:
        void run()
        {
            doTest();
        }

        int doTest()
        {
            // should be valid?
            //RTPSession tx();
            RTPSession tx(InetHostAddress("localhost"));
            tx.setSchedulingTimeout(10000);
            tx.setExpireTimeout(1000000);

            tx.startRunning();

            tx.setPayloadFormat(StaticPayloadFormat(sptPCMU));
            if ( !tx.addDestination(pattern.getDestinationAddress(),
                        pattern.getDestinationPort()) ) {
                return 1;
            }

            // 50 packets per second (packet duration of 20ms)
            uint32 period = 20;
            uint16 inc = tx.getCurrentRTPClockRate()/50;
            TimerPort::setTimer(period);
            for ( uint32 i = 0; i < pattern.getPacketsNumber(); i++ ) {
                tx.putData(i*inc, pattern.getPacketData(i), pattern.getPacketSize(i));
                Thread::sleep(TimerPort::getTimer());
                TimerPort::incTimer(period);
            }
            return 0;
        }
    };

    class RecvPacketTransmissionTest : public Test, public Thread
    {
    public:
        void run()
        {
            doTest();
        }

        int doTest()
        {
            RTPSession rx(pattern.getDestinationAddress(), pattern.getDestinationPort());

            rx.setSchedulingTimeout(10000);
            rx.setExpireTimeout(1000000);

            rx.startRunning();
            rx.setPayloadFormat(StaticPayloadFormat(sptPCMU));
            // arbitrary number of loops
            for ( int i = 0; i < 500 ; i++ ) {
                const AppDataUnit* adu;
                while ( (adu = rx.getData(rx.getFirstTimestamp())) ) {

                    delete adu;
                }
                Thread::sleep(7);
            }
            return 0;
        }
    };

    class MiscTest : public Test, public Thread, public TimerPort
    {
        void run()
        {
            doTest();
        }

        int doTest()
        {
            const uint32 NSESSIONS = 10;
            RTPSession rx(pattern.getDestinationAddress(),pattern.getDestinationPort());
            RTPSession **tx = new RTPSession* [NSESSIONS];
            for ( uint32 i = 0; i < NSESSIONS; i++ ) {
                tx[i] = new RTPSession(InetHostAddress("localhost"));
            }
            for ( uint32 i = 0; i  < NSESSIONS; i++) {
                tx[i]->setSchedulingTimeout(10000);
                tx[i]->setExpireTimeout(1000000);
                tx[i]->setPayloadFormat(StaticPayloadFormat(sptPCMU));
                if ( !tx[i]->addDestination(pattern.getDestinationAddress(), pattern.getDestinationPort()) ) {
                    return 1;
                }
            }

            rx.setPayloadFormat(StaticPayloadFormat(sptPCMU));
            rx.setSchedulingTimeout(5000);
            rx.setExpireTimeout(10000000); // 10 seconds!
            rx.startRunning();

            for ( uint32 i = 0; i  < NSESSIONS; i++) {
                tx[i]->startRunning();
            }
            uint32 period = 20;
            TimerPort::setTimer(period);
            for ( uint32 i = 0; i < pattern.getPacketsNumber(); i++ ) {
                if ( i == 70 ) {
                    RTPApplication &app = defaultApplication();
                    app.setSDESItem(SDESItemTypeCNAME,"foo@bar");
                }
                for ( uint32 s = 0; s  < NSESSIONS; s++) {
                // 50 packets per second (packet duration of 20ms)
                    uint16 inc =
                        tx[s]->getCurrentRTPClockRate()/50;
                    tx[s]->putData(i*inc, pattern.getPacketData(i), pattern.getPacketSize(i));
                }
                Thread::sleep(TimerPort::getTimer());
                TimerPort::incTimer(period);
            }

            Thread::sleep(5000);
            for ( uint32 i = 0; i < NSESSIONS; i++ ) {
                delete tx[i];
            }
            RTPSession::SyncSourcesIterator it;
            cout << "Sources of synchronization:" << endl;
            for (it = rx.begin() ; it != rx.end(); it++) {
                const SyncSource &s = *it;
                cout << s.getID();
                if ( s.isSender() )
                    cout << " (sender) ";
                cout << s.getNetworkAddress() << ":" <<
                    s.getControlTransportPort() << "/" <<
                    s.getDataTransportPort();
                Participant *p = s.getParticipant();
                cout << " (" <<
                    p->getSDESItem(SDESItemTypeCNAME)
                     << ") " << endl;
            }
            RTPApplication &app = defaultApplication();
            RTPApplication::ParticipantsIterator ai;
            cout << "Participants:" << endl;
            for ( ai = app.begin(); ai != app.end(); ai++ ) {
                const Participant &p = *ai;
                cout << p.getSDESItem(SDESItemTypeCNAME) << endl;
                //cout << p.getPRIVPrefix();
            }
            delete tx;
            return 0;
        }
    };

    // class TestPacketHeaders { }
    // header extension

    // class TestRTCPTransmission { }

    // class TestMiscellaneous { }

    // Things that should be tested:
    // extreme values (0 - big) for putData
    // segmentation (setMaxSendSegmentSize())
    // performance: packets/second (depending on packet size and # of participants)
    int main(int argc, char *argv[])
    {
        int result = 0;
        bool send = false;
        bool recv = false;

        RecvPacketTransmissionTest *rx;
        SendPacketTransmissionTest *tx;

        // accept as parameter if must run as --send or --recv

        // run several tests in parallel threads
        if ( send ) {
            tx = new SendPacketTransmissionTest();
            tx->start();
            tx->join();
        } else  if ( recv ) {
            rx = new RecvPacketTransmissionTest();
            rx->start();
            rx->join();
        } else {
            MiscTest m;
            m.start();
            m.join();
        }
        exit(result);
    }