2 * Asterisk -- An open source telephony toolkit.
4 * Copyright (C) 1999 - 2005, Digium, Inc.
6 * Mark Spencer <markster@digium.com>
8 * See http://www.asterisk.org for more information about
9 * the Asterisk project. Please do not directly contact
10 * any of the maintainers of this project for assistance;
11 * the project provides a web site, mailing lists and IRC
12 * channels for your use.
14 * This program is free software, distributed under the terms of
15 * the GNU General Public License Version 2. See the LICENSE file
16 * at the top of the source tree.
20 * \brief Call Parking and Pickup API
21 * Includes code and algorithms from the Zapata library.
24 #ifndef _AST_FEATURES_H
25 #define _AST_FEATURES_H
27 #define FEATURE_MAX_LEN 11
28 #define FEATURE_APP_LEN 64
29 #define FEATURE_APP_ARGS_LEN 256
30 #define FEATURE_SNAME_LEN 32
31 #define FEATURE_EXTEN_LEN 32
33 /*! \brief main call feature structure */
34 struct ast_call_feature {
37 char sname[FEATURE_SNAME_LEN];
38 char exten[FEATURE_MAX_LEN];
39 char default_exten[FEATURE_MAX_LEN];
40 int (*operation)(struct ast_channel *chan, struct ast_channel *peer, struct ast_bridge_config *config, char *code, int sense);
42 char app[FEATURE_APP_LEN];
43 char app_args[FEATURE_APP_ARGS_LEN];
44 AST_LIST_ENTRY(ast_call_feature) feature_entry;
49 /*! \brief Park a call and read back parked location
50 * \param chan the channel to actually be parked
51 \param host the channel which will have the parked location read to
52 Park the channel chan, and read back the parked location to the
53 host. If the call is not picked up within a specified period of
54 time, then the call will return to the last step that it was in
55 (in terms of exten, priority and context)
56 \param timeout is a timeout in milliseconds
57 \param extout is a parameter to an int that will hold the parked location, or NULL if you want
59 int ast_park_call(struct ast_channel *chan, struct ast_channel *host, int timeout, int *extout);
61 /*! \brief Park a call via a masqueraded channel
62 * \param rchan the real channel to be parked
63 \param host the channel to have the parking read to
64 Masquerade the channel rchan into a new, empty channel which is then
65 parked with ast_park_call
66 \param timeout is a timeout in milliseconds
67 \param extout is a parameter to an int that will hold the parked location, or NULL if you want
69 int ast_masq_park_call(struct ast_channel *rchan, struct ast_channel *host, int timeout, int *extout);
71 /*! \brief Determine system parking extension
72 * Returns the call parking extension for drivers that provide special
74 char *ast_parking_ext(void);
76 /*! \brief Determine system call pickup extension */
77 char *ast_pickup_ext(void);
79 /*! \brief Bridge a call, optionally allowing redirection */
80 int ast_bridge_call(struct ast_channel *chan, struct ast_channel *peer,struct ast_bridge_config *config);
82 /*! \brief Pickup a call */
83 int ast_pickup_call(struct ast_channel *chan);
85 /*! \brief register new feature into feature_set
86 \param feature an ast_call_feature object which contains a keysequence
87 and a callback function which is called when this keysequence is pressed
89 void ast_register_feature(struct ast_call_feature *feature);
91 /*! \brief unregister feature from feature_set
92 \param feature the ast_call_feature object which was registered before*/
93 void ast_unregister_feature(struct ast_call_feature *feature);
95 #endif /* _AST_FEATURES_H */