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
|
/*
* scx_jitterbuf: jitterbuffering algorithm
*
* Copyright (C) 2005, Attractel OOD
*
* Contributors:
* Slav Klenov <slav@securax.org>
*
* Copyright on this file is disclaimed to Digium for inclusion in Asterisk
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Jitterbuffering algorithm.
*
*/
#ifndef _SCX_JITTERBUF_H_
#define _SCX_JITTERBUF_H_
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
/* return codes */
#define SCX_JB_OK 0
#define SCX_JB_DROP 1
#define SCX_JB_INTERP 2
#define SCX_JB_NOFRAME 3
/* defaults */
#define SCX_JB_SIZE_DEFAULT 200
#define SCX_JB_RESYNCH_THRESHOLD_DEFAULT 1000
/* jb configuration properties */
struct scx_jb_conf
{
long jbsize;
long resync_threshold;
};
struct scx_jb_frame
{
void *data;
long ts;
long ms;
long delivery;
struct scx_jb_frame *next;
struct scx_jb_frame *prev;
};
struct scx_jb;
/* jb interface */
struct scx_jb * scx_jb_new(struct scx_jb_conf *conf);
void scx_jb_destroy(struct scx_jb *jb);
int scx_jb_put_first(struct scx_jb *jb, void *data, long ms, long ts, long now);
int scx_jb_put(struct scx_jb *jb, void *data, long ms, long ts, long now);
int scx_jb_get(struct scx_jb *jb, struct scx_jb_frame *frame, long now, long interpl);
long scx_jb_next(struct scx_jb *jb);
int scx_jb_remove(struct scx_jb *jb, struct scx_jb_frame *frameout);
void scx_jb_set_force_resynch(struct scx_jb *jb);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif /* _SCX_JITTERBUF_H_ */
|
