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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* rtp.h
*
* rtp interface for srtp reference implementation
*
* David A. McGrew
* Cisco Systems, Inc.
*
* data types:
*
* rtp_msg_t an rtp message (the data that goes on the wire)
* rtp_sender_t sender side socket and rtp info
* rtp_receiver_t receiver side socket and rtp info
*
*/
/*
*
* Copyright (c) 2001-2006, Cisco Systems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* Neither the name of the Cisco Systems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef RTP_H
#define RTP_H
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#elif defined HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#include "srtp.h"
typedef struct rtp_sender_ctx_t *rtp_sender_t;
typedef struct rtp_receiver_ctx_t *rtp_receiver_t;
unsigned int
rtp_sendto(rtp_sender_t sender, const void* msg, int len);
unsigned int
rtp_recvfrom(rtp_receiver_t receiver, void *msg, int *len);
int
rtp_receiver_init(rtp_receiver_t rcvr, int socket,
struct sockaddr_in addr, unsigned int ssrc);
int
rtp_sender_init(rtp_sender_t sender, int socket,
struct sockaddr_in addr, unsigned int ssrc);
/*
* srtp_sender_init(...) initializes an rtp_sender_t
*/
int
srtp_sender_init(rtp_sender_t rtp_ctx, /* structure to be init'ed */
struct sockaddr_in name, /* socket name */
sec_serv_t security_services, /* sec. servs. to be used */
unsigned char *input_key /* master key/salt in hex */
);
int
srtp_receiver_init(rtp_receiver_t rtp_ctx, /* structure to be init'ed */
struct sockaddr_in name, /* socket name */
sec_serv_t security_services, /* sec. servs. to be used */
unsigned char *input_key /* master key/salt in hex */
);
int
rtp_sender_init_srtp(rtp_sender_t sender, const srtp_policy_t *policy);
int
rtp_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy);
rtp_sender_t
rtp_sender_alloc();
rtp_receiver_t
rtp_receiver_alloc();
/*
* RTP_HEADER_LEN indicates the size of an RTP header
*/
#define RTP_HEADER_LEN 12
/*
* RTP_MAX_BUF_LEN defines the largest RTP packet in the rtp.c implementation
*/
#define RTP_MAX_BUF_LEN 16384
#endif /* RTP_H */
|
