JackTrip
UdpDataProtocol.h
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1 //*****************************************************************
2 /*
3  JackTrip: A System for High-Quality Audio Network Performance
4  over the Internet
5 
6  Copyright (c) 2008 Juan-Pablo Caceres, Chris Chafe.
7  SoundWIRE group at CCRMA, Stanford University.
8 
9  Permission is hereby granted, free of charge, to any person
10  obtaining a copy of this software and associated documentation
11  files (the "Software"), to deal in the Software without
12  restriction, including without limitation the rights to use,
13  copy, modify, merge, publish, distribute, sublicense, and/or sell
14  copies of the Software, and to permit persons to whom the
15  Software is furnished to do so, subject to the following
16  conditions:
17 
18  The above copyright notice and this permission notice shall be
19  included in all copies or substantial portions of the Software.
20 
21  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28  OTHER DEALINGS IN THE SOFTWARE.
29 */
30 //*****************************************************************
31 
38 #ifndef __UDPDATAPROTOCOL_H__
39 #define __UDPDATAPROTOCOL_H__
40 
41 #include <QThread>
42 #include <QUdpSocket>
43 #include <QHostAddress>
44 
45 #include "DataProtocol.h"
46 #include "jacktrip_types.h"
47 #include "jacktrip_globals.h"
48 
64 {
65  Q_OBJECT;
66 
67 public:
68 
76  UdpDataProtocol(JackTrip* jacktrip, const runModeT runmode,
77  int bind_port, int peer_port,
78  unsigned int udp_redundancy_factor = 1);
79 
82  virtual ~UdpDataProtocol();
83 
87  void setPeerAddress(const char* peerHostOrIP);
88 
97  //virtual int receivePacket(char* buf, const size_t n);
98  virtual int receivePacket(QUdpSocket& UdpSocket, char* buf, const size_t n);
99 
108  virtual int sendPacket(QUdpSocket& UdpSocket, const QHostAddress& PeerAddress,
109  const char* buf, const size_t n);
110 
116  virtual void getPeerAddressFromFirstPacket(QUdpSocket& UdpSocket,
117  QHostAddress& peerHostAddress,
118  uint16_t& port);
119 
122  void setBindPort(int port)
123  { mBindPort = port; }
124 
127  void setPeerPort(int port)
128  { mPeerPort = port; }
129 
135  virtual void run();
136 
137 
138 private slots:
139  void printUdpWaitedTooLong(int wait_msec);
140 
141 
142 signals:
143 
146  void signalWatingTooLong(int wait_msec);
147 
148 
149 private:
150 
153  void bindSocket(QUdpSocket& UdpSocket);
154 
164  bool waitForReady(QUdpSocket& UdpSocket, int timeout_msec);
165 
168  void receivePacketRedundancy(QUdpSocket& UdpSocket,
169  int8_t* full_redundant_packet,
170  int full_redundant_packet_size,
171  int full_packet_size,
172  uint16_t& current_seq_num,
173  uint16_t& last_seq_num,
174  uint16_t& newer_seq_num);
175 
178  void sendPacketRedundancy(QUdpSocket& UdpSocket,
179  QHostAddress& PeerAddress,
180  int8_t* full_redundant_packet,
181  int full_redundant_packet_size,
182  int full_packet_size);
183 
184  int mBindPort;
185  int mPeerPort;
187 
188  QHostAddress mPeerAddress;
189 
192 
193  unsigned int mUdpRedundancyFactor;
194  static QMutex sUdpMutex;
195 };
196 
197 #endif // __UDPDATAPROTOCOL_H__