1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library 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 Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2005 Live Networks, Inc. All rights reserved.
// An abstraction of a network interface used for RTP (or RTCP).
// (This allows the RTP-over-TCP hack (RFC 2326, section 10.12) to
// be implemented transparently.)
// C++ header
#ifndef _RTP_INTERFACE_HH
#define _RTP_INTERFACE_HH
#ifndef _MEDIA_HH
#include <Media.hh>
#endif
#ifndef _GROUPSOCK_HH
#include "Groupsock.hh"
#endif
// Typedef for an optional auxilliary handler function, to be called
// when each new packet is read:
typedef void AuxHandlerFunc(void* clientData, unsigned char* packet,
unsigned packetSize);
class tcpStreamRecord {
public:
tcpStreamRecord(int streamSocketNum, unsigned char streamChannelId,
tcpStreamRecord* next);
virtual ~tcpStreamRecord();
public:
tcpStreamRecord* fNext;
int fStreamSocketNum;
unsigned char fStreamChannelId;
};
class RTPInterface {
public:
RTPInterface(Medium* owner, Groupsock* gs);
virtual ~RTPInterface();
Groupsock* gs() const { return fGS; }
void setStreamSocket(int sockNum, unsigned char streamChannelId);
void addStreamSocket(int sockNum, unsigned char streamChannelId);
void removeStreamSocket(int sockNum, unsigned char streamChannelId);
void sendPacket(unsigned char* packet, unsigned packetSize);
void startNetworkReading(TaskScheduler::BackgroundHandlerProc*
handlerProc);
Boolean handleRead(unsigned char* buffer, unsigned bufferMaxSize,
unsigned& bytesRead,
struct sockaddr_in& fromAddress);
void stopNetworkReading();
UsageEnvironment& envir() const { return fOwner->envir(); }
void setAuxilliaryReadHandler(AuxHandlerFunc* handlerFunc,
void* handlerClientData) {
fAuxReadHandlerFunc = handlerFunc;
fAuxReadHandlerClientData = handlerClientData;
}
private:
friend class SocketDescriptor;
Medium* fOwner;
Groupsock* fGS;
tcpStreamRecord* fTCPStreams; // optional, for RTP-over-TCP streaming/receiving
unsigned short fNextTCPReadSize;
// how much data (if any) is available to be read from the TCP stream
int fNextTCPReadStreamSocketNum;
unsigned char fNextTCPReadStreamChannelId;
TaskScheduler::BackgroundHandlerProc* fReadHandlerProc; // if any
AuxHandlerFunc* fAuxReadHandlerFunc;
void* fAuxReadHandlerClientData;
};
#endif
|
