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 #define FEATURE_RETURN_HANGUP -1
40 #define FEATURE_RETURN_SUCCESSBREAK 0
41 #define FEATURE_RETURN_PASSDIGITS 21
42 #define FEATURE_RETURN_STOREDIGITS 22
43 #define FEATURE_RETURN_SUCCESS 23
44 #define FEATURE_RETURN_KEEPTRYING 24
46 typedef int (*feature_operation)(struct ast_channel *chan, struct ast_channel *peer, struct ast_bridge_config *config, char *code, int sense, void *data);
48 /*! \brief main call feature structure */
51 AST_FEATURE_FLAG_NEEDSDTMF = (1 << 0),
52 AST_FEATURE_FLAG_ONPEER = (1 << 1),
53 AST_FEATURE_FLAG_ONSELF = (1 << 2),
54 AST_FEATURE_FLAG_BYCALLEE = (1 << 3),
55 AST_FEATURE_FLAG_BYCALLER = (1 << 4),
56 AST_FEATURE_FLAG_BYBOTH = (3 << 3),
59 struct ast_call_feature {
62 char sname[FEATURE_SNAME_LEN];
63 char exten[FEATURE_MAX_LEN];
64 char default_exten[FEATURE_MAX_LEN];
65 feature_operation operation;
67 char app[FEATURE_APP_LEN];
68 char app_args[FEATURE_APP_ARGS_LEN];
69 char moh_class[FEATURE_MOH_LEN];
70 AST_LIST_ENTRY(ast_call_feature) feature_entry;
73 #define AST_FEATURE_RETURN_HANGUP FEATURE_RETURN_HANGUP
74 #define AST_FEATURE_RETURN_SUCCESSBREAK FEATURE_RETURN_SUCCESSBREAK
75 #define AST_FEATURE_RETURN_PASSDIGITS FEATURE_RETURN_PASSDIGITS
76 #define AST_FEATURE_RETURN_STOREDIGITS FEATURE_RETURN_STOREDIGITS
77 #define AST_FEATURE_RETURN_SUCCESS FEATURE_RETURN_SUCCESS
78 #define AST_FEATURE_RETURN_KEEPTRYING FEATURE_RETURN_KEEPTRYING
80 struct feature_interpret_result {
81 struct ast_call_feature *builtin_feature;
82 struct ast_call_feature *dynamic_features[20];
83 struct ast_call_feature *group_features[20];
89 * \brief Park a call and read back parked location
90 * \param chan the channel to actually be parked
91 * \param host the channel which will have the parked location read to.
92 * \param timeout is a timeout in milliseconds
93 * \param extout is a parameter to an int that will hold the parked location, or NULL if you want.
95 * Park the channel chan, and read back the parked location to the host.
96 * If the call is not picked up within a specified period of time,
97 * then the call will return to the last step that it was in
98 * (in terms of exten, priority and context)
99 * \retval 0 on success.
100 * \retval -1 on failure.
102 int ast_park_call(struct ast_channel *chan, struct ast_channel *host, int timeout, int *extout);
105 * \brief Park a call via a masqueraded channel
106 * \param rchan the real channel to be parked
107 * \param host the channel to have the parking read to.
108 * \param timeout is a timeout in milliseconds
109 * \param extout is a parameter to an int that will hold the parked location, or NULL if you want.
111 * Masquerade the channel rchan into a new, empty channel which is then parked with ast_park_call
112 * \retval 0 on success.
113 * \retval -1 on failure.
115 int ast_masq_park_call(struct ast_channel *rchan, struct ast_channel *host, int timeout, int *extout);
118 * \brief Determine system parking extension
119 * \returns the call parking extension for drivers that provide special call parking help
121 const char *ast_parking_ext(void);
123 /*! \brief Determine system call pickup extension */
124 const char *ast_pickup_ext(void);
126 /*! \brief Bridge a call, optionally allowing redirection */
127 int ast_bridge_call(struct ast_channel *chan, struct ast_channel *peer,struct ast_bridge_config *config);
129 /*! \brief Pickup a call */
130 int ast_pickup_call(struct ast_channel *chan);
132 /*! \brief register new feature into feature_set
133 \param feature an ast_call_feature object which contains a keysequence
134 and a callback function which is called when this keysequence is pressed
136 void ast_register_feature(struct ast_call_feature *feature);
138 /*! \brief unregister feature from feature_set
139 \param feature the ast_call_feature object which was registered before*/
140 void ast_unregister_feature(struct ast_call_feature *feature);
142 int ast_feature_detect(struct ast_channel *chan, const struct ast_flags *features, char *code, struct feature_interpret_result *result, const char *dynamic_features);
144 void ast_features_lock(void);
145 void ast_features_unlock(void);
148 /*! \brief look for a call feature entry by its sname
149 \param name a string ptr, should match "automon", "blindxfer", "atxfer", etc. */
150 struct ast_call_feature *ast_find_call_feature(const char *name);
152 void ast_rdlock_call_features(void);
153 void ast_unlock_call_features(void);
155 /*! \brief Reload call features from features.conf */
156 int ast_features_reload(void);
158 #endif /* _AST_FEATURES_H */