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
|
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2005, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* 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 Device state management
*/
#ifndef _ASTERISK_DEVICESTATE_H
#define _ASTERISK_DEVICESTATE_H
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
/*! Device is valid but channel didn't know state */
#define AST_DEVICE_UNKNOWN 0
/*! Device is not used */
#define AST_DEVICE_NOT_INUSE 1
/*! Device is in use */
#define AST_DEVICE_INUSE 2
/*! Device is busy */
#define AST_DEVICE_BUSY 3
/*! Device is invalid */
#define AST_DEVICE_INVALID 4
/*! Device is unavailable */
#define AST_DEVICE_UNAVAILABLE 5
/*! Device is ringing */
#define AST_DEVICE_RINGING 6
typedef int (*ast_devstate_cb_type)(const char *dev, int state, void *data);
/*! \brief Convert device state to text string for output
* \param devstate Current device state
*/
const char *devstate2str(int devstate);
/*! \brief Search the Channels by Name
* \param device like a dialstring
* Search the Device in active channels by compare the channelname against
* the devicename. Compared are only the first chars to the first '-' char.
* Returns an AST_DEVICE_UNKNOWN if no channel found or
* AST_DEVICE_INUSE if a channel is found
*/
int ast_parse_device_state(const char *device);
/*! \brief Asks a channel for device state
* \param device like a dialstring
* Asks a channel for device state, data is normaly a number from dialstring
* used by the low level module
* Trys the channel devicestate callback if not supported search in the
* active channels list for the device.
* Returns an AST_DEVICE_??? state -1 on failure
*/
int ast_device_state(const char *device);
/*! \brief Tells Asterisk the State for Device is changed
* \param fmt devicename like a dialstring with format parameters
* Asterisk polls the new extensionstates and calls the registered
* callbacks for the changed extensions
* Returns 0 on success, -1 on failure
*/
int ast_device_state_changed(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
/*! \brief Tells Asterisk the State for Device is changed
* \param device devicename like a dialstrin
* Asterisk polls the new extensionstates and calls the registered
* callbacks for the changed extensions
* Returns 0 on success, -1 on failure
*/
int ast_device_state_changed_literal(const char *device);
/*! \brief Registers a device state change callback
* \param callback Callback
* \param data to pass to callback
* The callback is called if the state for extension is changed
* Return -1 on failure, ID on success
*/
int ast_devstate_add(ast_devstate_cb_type callback, void *data);
void ast_devstate_del(ast_devstate_cb_type callback, void *data);
int ast_device_state_engine_init(void);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif /* _ASTERISK_DEVICESTATE_H */
|
