ext.h

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00001 // Copyright (C) 1999-2003 Open Source Telecom Corporation.
00002 //  
00003 // This program is free software; you can redistribute it and/or modify
00004 // it under the terms of the GNU General Public License as published by
00005 // the Free Software Foundation; either version 2 of the License, or
00006 // (at your option) any later version.
00007 // 
00008 // This program is distributed in the hope that it will be useful,
00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00011 // GNU General Public License for more details.
00012 // 
00013 // You should have received a copy of the GNU General Public License
00014 // along with this program; if not, write to the Free Software 
00015 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00016 // 
00017 // As a special exception, you may use this file as part of a free software
00018 // library without restriction.  Specifically, if other files instantiate
00019 // templates or use macros or inline functions from this file, or you compile
00020 // this file and link it with other files to produce an executable, this
00021 // file does not by itself cause the resulting executable to be covered by
00022 // the GNU General Public License.  This exception does not however    
00023 // invalidate any other reasons why the executable file might be covered by
00024 // the GNU General Public License.    
00025 //
00026 // This exception applies only to the code released under the name GNU
00027 // ccRTP.  If you copy code from other releases into a copy of GNU
00028 // ccRTP, as the General Public License permits, the exception does
00029 // not apply to the code that you add in this way.  To avoid misleading
00030 // anyone as to the status of such modified files, you must delete
00031 // this exception notice from them.
00032 //
00033 // If you write modifications of your own for GNU ccRTP, it is your choice
00034 // whether to permit this exception to apply to your modifications.
00035 // If you do not wish that, delete this exception notice.
00036 //
00037 
00043 #ifndef CCXX_RTP_EXT_H
00044 #define CCXX_RTP_EXT_H
00045 
00046 #ifndef CCXX_SOCKET_H_
00047 #include <cc++/socket.h>
00048 #endif
00049 
00050 #include <ccrtp/ioqueue.h>
00051 #include <ccrtp/channel.h>
00052 
00053 #ifdef  CCXX_NAMESPACES
00054 namespace ost {
00055 #endif
00056 
00072 class __EXPORT RTPDuplex : public RTPDataQueue, 
00073                                     protected UDPReceive, public UDPTransmit
00074 {
00075 public:
00081         RTPDuplex(const InetAddress &bind, tpport_t local, tpport_t remote);
00082 
00086         virtual
00087         ~RTPDuplex();
00088 
00095         UDPTransmit::Error 
00096         connect(const InetHostAddress &host, tpport_t port = 0);
00097 
00098 protected:
00099 
00104         bool 
00105         isPendingData(microtimeout_t timeout)
00106         { return isPendingReceive(timeout); }
00107 
00113         size_t 
00114         sendData(const unsigned char *const buffer, size_t len)
00115         { return UDPTransmit::transmit((const char *)buffer, len); }
00116 
00124         size_t
00125         recvData(unsigned char *buffer, size_t len, 
00126                  InetHostAddress& na, tpport_t& tp)
00127         { /* na = UDPReceive::getPeer(&tp);  FIX name ambiguity */
00128         return UDPReceive::receive(buffer, len); }
00129         
00134         inline void
00135         setDataPeer(const InetAddress&, tpport_t)
00136         { }
00137 
00142         inline void
00143         setControlPeer(const InetAddress&, tpport_t)
00144         { }
00145 
00146         inline size_t
00147         getNextDataPacketSize() const
00148         {
00149                 // the const cast is a trick only needed for cc++2 <= 1.0.10
00150                 size_t len; ccioctl(const_cast<RTPDuplex*>(this)->UDPReceive::getReceiver(),FIONREAD,len); return len; 
00151         }
00152 
00156         SyncSource &getPeer();
00157 
00158 private:
00159         tpport_t dataBasePort;
00160 };
00161  // rtpext
00163 
00164 #ifdef  CCXX_NAMESPACES
00165 }
00166 #endif
00167 
00168 #endif //CCXX_RTP_EXT_H
00169 

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