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src/UdpDataProtocol.h

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00001 //*****************************************************************
00002 /*
00003   JackTrip: A System for High-Quality Audio Network Performance
00004   over the Internet
00005 
00006   Copyright (c) 2008 Juan-Pablo Caceres, Chris Chafe.
00007   SoundWIRE group at CCRMA, Stanford University.
00008   
00009   Permission is hereby granted, free of charge, to any person
00010   obtaining a copy of this software and associated documentation
00011   files (the "Software"), to deal in the Software without
00012   restriction, including without limitation the rights to use,
00013   copy, modify, merge, publish, distribute, sublicense, and/or sell
00014   copies of the Software, and to permit persons to whom the
00015   Software is furnished to do so, subject to the following
00016   conditions:
00017   
00018   The above copyright notice and this permission notice shall be
00019   included in all copies or substantial portions of the Software.
00020   
00021   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00022   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
00023   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00024   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
00025   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
00026   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
00027   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
00028   OTHER DEALINGS IN THE SOFTWARE.
00029 */
00030 //*****************************************************************
00031 
00038 #ifndef __UDPDATAPROTOCOL_H__
00039 #define __UDPDATAPROTOCOL_H__
00040 
00041 #include <QThread>
00042 #include <QUdpSocket>
00043 #include <QHostAddress>
00044 
00045 #include "DataProtocol.h"
00046 #include "jacktrip_types.h"
00047 #include "jacktrip_globals.h"
00048 
00063 class UdpDataProtocol : public DataProtocol
00064 {
00065   Q_OBJECT;
00066   
00067 public:
00068   
00076   UdpDataProtocol(JackTrip* jacktrip, const runModeT runmode,
00077       int bind_port, int peer_port,
00078                   unsigned int udp_redundancy_factor = 1);
00079   
00082   virtual ~UdpDataProtocol();  
00083 
00087   void setPeerAddress(const char* peerHostOrIP);
00088 
00097   //virtual int receivePacket(char* buf, const size_t n);
00098   virtual int receivePacket(QUdpSocket& UdpSocket, char* buf, const size_t n);
00099   
00108   virtual int sendPacket(QUdpSocket& UdpSocket, const QHostAddress& PeerAddress,
00109                          const char* buf, const size_t n);
00110   
00116   virtual void getPeerAddressFromFirstPacket(QUdpSocket& UdpSocket,
00117                                              QHostAddress& peerHostAddress,
00118                uint16_t& port);
00119 
00122   void setBindPort(int port)
00123   { mBindPort = port; }
00124 
00127   void setPeerPort(int port)
00128   { mPeerPort = port; }
00129 
00135   virtual void run();
00136 
00137 
00138 private slots:
00139   void printUdpWaitedTooLong(int wait_msec);
00140 
00141 
00142 signals:
00143 
00146   void signalWatingTooLong(int wait_msec);
00147 
00148 
00149 private:
00150 
00153   void bindSocket(QUdpSocket& UdpSocket);
00154  
00164   bool waitForReady(QUdpSocket& UdpSocket, int timeout_msec);
00165 
00168   void receivePacketRedundancy(QUdpSocket& UdpSocket,
00169                                int8_t* full_redundant_packet,
00170                                int full_redundant_packet_size,
00171                                int full_packet_size,
00172                                uint16_t& current_seq_num,
00173                                uint16_t& last_seq_num,
00174                                uint16_t& newer_seq_num);
00175 
00178   void sendPacketRedundancy(QUdpSocket& UdpSocket,
00179                             QHostAddress& PeerAddress,
00180                             int8_t* full_redundant_packet,
00181                             int full_redundant_packet_size,
00182                             int full_packet_size);
00183 
00184   int mBindPort; 
00185   int mPeerPort; 
00186   const runModeT mRunMode; 
00187 
00188   QHostAddress mPeerAddress; 
00189 
00190   int8_t* mAudioPacket; 
00191   int8_t* mFullPacket; 
00192 
00193   unsigned int mUdpRedundancyFactor; 
00194   static QMutex sUdpMutex; 
00195 };
00196 
00197 #endif // __UDPDATAPROTOCOL_H__

 

Documentation generated by Doxygen 1.7.1 on Thu Feb 10 2011 18:57:32

© 2008 by Juan-Pablo Caceres (jcaceres at ccrma dot stanford dot edu) and Chris Chafe
SoundWIRE Group at CCRMA - Stanford University

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