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 #include "asterisk/pbx.h"
28 #include "asterisk/linkedlists.h"
30 #define FEATURE_MAX_LEN 11
31 #define FEATURE_APP_LEN 64
32 #define FEATURE_APP_ARGS_LEN 256
33 #define FEATURE_SNAME_LEN 32
34 #define FEATURE_EXTEN_LEN 32
35 #define FEATURE_MOH_LEN 80 /* same as MAX_MUSICCLASS from channel.h */
37 #define PARK_APP_NAME "Park"
39 /*! \brief main call feature structure */
42 AST_FEATURE_FLAG_NEEDSDTMF = (1 << 0),
43 AST_FEATURE_FLAG_ONPEER = (1 << 1),
44 AST_FEATURE_FLAG_ONSELF = (1 << 2),
45 AST_FEATURE_FLAG_BYCALLEE = (1 << 3),
46 AST_FEATURE_FLAG_BYCALLER = (1 << 4),
47 AST_FEATURE_FLAG_BYBOTH = (3 << 3),
50 struct ast_call_feature {
53 char sname[FEATURE_SNAME_LEN];
54 char exten[FEATURE_MAX_LEN];
55 char default_exten[FEATURE_MAX_LEN];
56 int (*operation)(struct ast_channel *chan, struct ast_channel *peer, struct ast_bridge_config *config, char *code, int sense, void *data);
58 char app[FEATURE_APP_LEN];
59 char app_args[FEATURE_APP_ARGS_LEN];
60 char moh_class[FEATURE_MOH_LEN];
61 AST_LIST_ENTRY(ast_call_feature) feature_entry;
64 #define AST_FEATURE_RETURN_HANGUP -1
65 #define AST_FEATURE_RETURN_SUCCESSBREAK 0
66 #define AST_FEATURE_RETURN_PASSDIGITS 21
67 #define AST_FEATURE_RETURN_STOREDIGITS 22
68 #define AST_FEATURE_RETURN_SUCCESS 23
69 #define AST_FEATURE_RETURN_KEEPTRYING 24
72 * \brief Park a call and read back parked location
73 * \param chan the channel to actually be parked
74 * \param host the channel which will have the parked location read to.
75 * \param timeout is a timeout in milliseconds
76 * \param extout is a parameter to an int that will hold the parked location, or NULL if you want.
78 * Park the channel chan, and read back the parked location to the host.
79 * If the call is not picked up within a specified period of time,
80 * then the call will return to the last step that it was in
81 * (in terms of exten, priority and context)
82 * \retval 0 on success.
83 * \retval -1 on failure.
85 int ast_park_call(struct ast_channel *chan, struct ast_channel *host, int timeout, int *extout);
88 * \brief Park a call via a masqueraded channel
89 * \param rchan the real channel to be parked
90 * \param host the channel to have the parking read to.
91 * \param timeout is a timeout in milliseconds
92 * \param extout is a parameter to an int that will hold the parked location, or NULL if you want.
94 * Masquerade the channel rchan into a new, empty channel which is then parked with ast_park_call
95 * \retval 0 on success.
96 * \retval -1 on failure.
98 int ast_masq_park_call(struct ast_channel *rchan, struct ast_channel *host, int timeout, int *extout);
101 * \brief Determine system parking extension
102 * \returns the call parking extension for drivers that provide special call parking help
104 const char *ast_parking_ext(void);
106 /*! \brief Determine system call pickup extension */
107 const char *ast_pickup_ext(void);
109 /*! \brief Bridge a call, optionally allowing redirection */
110 int ast_bridge_call(struct ast_channel *chan, struct ast_channel *peer,struct ast_bridge_config *config);
112 /*! \brief Pickup a call */
113 int ast_pickup_call(struct ast_channel *chan);
115 /*! \brief register new feature into feature_set
116 \param feature an ast_call_feature object which contains a keysequence
117 and a callback function which is called when this keysequence is pressed
119 void ast_register_feature(struct ast_call_feature *feature);
121 /*! \brief unregister feature from feature_set
122 \param feature the ast_call_feature object which was registered before*/
123 void ast_unregister_feature(struct ast_call_feature *feature);
125 /*! \brief look for a call feature entry by its sname
126 \param name a string ptr, should match "automon", "blindxfer", "atxfer", etc. */
127 struct ast_call_feature *ast_find_call_feature(const char *name);
129 void ast_rdlock_call_features(void);
130 void ast_unlock_call_features(void);
132 /*! \brief Reload call features from features.conf */
133 int ast_features_reload(void);
135 #endif /* _AST_FEATURES_H */