ext.h

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// Copyright (C) 1999-2003 Open Source Telecom Corporation.
//  
// 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.
// 
// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however    
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.    
//
// This exception applies only to the code released under the name GNU
// ccRTP.  If you copy code from other releases into a copy of GNU
// ccRTP, as the General Public License permits, the exception does
// not apply to the code that you add in this way.  To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for GNU ccRTP, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.
//

#ifndef CCXX_RTP_EXT_H
#define CCXX_RTP_EXT_H

#ifndef CCXX_SOCKET_H_
#include <cc++/socket.h>
#endif

#include <ccrtp/ioqueue.h>
#include <ccrtp/channel.h>

#ifdef  CCXX_NAMESPACES
namespace ost {
#endif

class __EXPORT RTPDuplex : public RTPDataQueue, 
                                    protected UDPReceive, public UDPTransmit
{
public:
        RTPDuplex(const InetAddress &bind, tpport_t local, tpport_t remote);

        virtual
        ~RTPDuplex();

        UDPTransmit::Error 
        connect(const InetHostAddress &host, tpport_t port = 0);

protected:

        bool 
        isPendingData(microtimeout_t timeout)
        { return isPendingReceive(timeout); }

        size_t 
        sendData(const unsigned char *const buffer, size_t len)
        { return UDPTransmit::transmit((const char *)buffer, len); }

        size_t
        recvData(unsigned char *buffer, size_t len, 
                 InetHostAddress& na, tpport_t& tp)
        { /* na = UDPReceive::getPeer(&tp);  FIX name ambiguity */
        return UDPReceive::receive(buffer, len); }
        
        inline void
        setDataPeer(const InetAddress&, tpport_t)
        { }

        inline void
        setControlPeer(const InetAddress&, tpport_t)
        { }

        inline size_t
        getNextDataPacketSize() const
        {
                // the const cast is a trick only needed for cc++2 <= 1.0.10
                size_t len; ccioctl(const_cast<RTPDuplex*>(this)->UDPReceive::getReceiver(),FIONREAD,len); return len; 
        }

        SyncSource &getPeer();

private:
        tpport_t dataBasePort;
};
 // rtpext

#ifdef  CCXX_NAMESPACES
}
#endif

#endif //CCXX_RTP_EXT_H