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 AST_FEATURE_RETURN_HANGUP -1
40 #define AST_FEATURE_RETURN_SUCCESSBREAK 0
41 #define AST_FEATURE_RETURN_PBX_KEEPALIVE AST_PBX_KEEPALIVE
42 #define AST_FEATURE_RETURN_NO_HANGUP_PEER AST_PBX_NO_HANGUP_PEER
43 #define AST_FEATURE_RETURN_PASSDIGITS 21
44 #define AST_FEATURE_RETURN_STOREDIGITS 22
45 #define AST_FEATURE_RETURN_SUCCESS 23
46 #define AST_FEATURE_RETURN_KEEPTRYING 24
47 #define AST_FEATURE_RETURN_PARKFAILED 25
49 #define FEATURE_SENSE_CHAN (1 << 0)
50 #define FEATURE_SENSE_PEER (1 << 1)
52 typedef int (*ast_feature_operation)(struct ast_channel *chan, struct ast_channel *peer, struct ast_bridge_config *config, char *code, int sense, void *data);
54 /*! \brief main call feature structure */
57 AST_FEATURE_FLAG_NEEDSDTMF = (1 << 0),
58 AST_FEATURE_FLAG_ONPEER = (1 << 1),
59 AST_FEATURE_FLAG_ONSELF = (1 << 2),
60 AST_FEATURE_FLAG_BYCALLEE = (1 << 3),
61 AST_FEATURE_FLAG_BYCALLER = (1 << 4),
62 AST_FEATURE_FLAG_BYBOTH = (3 << 3),
65 struct ast_call_feature {
68 char sname[FEATURE_SNAME_LEN];
69 char exten[FEATURE_MAX_LEN];
70 char default_exten[FEATURE_MAX_LEN];
71 ast_feature_operation operation;
73 char app[FEATURE_APP_LEN];
74 char app_args[FEATURE_APP_ARGS_LEN];
75 char moh_class[FEATURE_MOH_LEN];
76 AST_LIST_ENTRY(ast_call_feature) feature_entry;
80 * \brief Park a call and read back parked location
81 * \param chan the channel to actually be parked
82 * \param host the channel which will have the parked location read to.
83 * \param timeout is a timeout in milliseconds
84 * \param extout is a parameter to an int that will hold the parked location, or NULL if you want.
86 * Park the channel chan, and read back the parked location to the host.
87 * If the call is not picked up within a specified period of time,
88 * then the call will return to the last step that it was in
89 * (in terms of exten, priority and context)
90 * \retval 0 on success.
91 * \retval -1 on failure.
93 int ast_park_call(struct ast_channel *chan, struct ast_channel *host, int timeout, int *extout);
96 * \brief Park a call via a masqueraded channel
97 * \param rchan the real channel to be parked
98 * \param host the channel to have the parking read to.
99 * \param timeout is a timeout in milliseconds
100 * \param extout is a parameter to an int that will hold the parked location, or NULL if you want.
102 * Masquerade the channel rchan into a new, empty channel which is then parked with ast_park_call
103 * \retval 0 on success.
104 * \retval -1 on failure.
106 int ast_masq_park_call(struct ast_channel *rchan, struct ast_channel *host, int timeout, int *extout);
109 * \brief Determine system parking extension
110 * \returns the call parking extension for drivers that provide special call parking help
112 const char *ast_parking_ext(void);
114 /*! \brief Determine system call pickup extension */
115 const char *ast_pickup_ext(void);
117 /*! \brief Bridge a call, optionally allowing redirection */
118 int ast_bridge_call(struct ast_channel *chan, struct ast_channel *peer,struct ast_bridge_config *config);
120 /*! \brief Pickup a call */
121 int ast_pickup_call(struct ast_channel *chan);
123 /*! \brief register new feature into feature_set
124 \param feature an ast_call_feature object which contains a keysequence
125 and a callback function which is called when this keysequence is pressed
127 void ast_register_feature(struct ast_call_feature *feature);
129 /*! \brief unregister feature from feature_set
130 \param feature the ast_call_feature object which was registered before*/
131 void ast_unregister_feature(struct ast_call_feature *feature);
133 /*! \brief detect a feature before bridging
134 \para chan, ast_flags ptr, code, ast_call_feature ptr to be set if found */
135 int ast_feature_detect(struct ast_channel *chan, struct ast_flags *features, char *code, struct ast_call_feature *feature);
137 /*! \brief look for a call feature entry by its sname
138 \param name a string ptr, should match "automon", "blindxfer", "atxfer", etc. */
139 struct ast_call_feature *ast_find_call_feature(const char *name);
141 void ast_rdlock_call_features(void);
142 void ast_unlock_call_features(void);
144 /*! \brief Reload call features from features.conf */
145 int ast_features_reload(void);
147 #endif /* _AST_FEATURES_H */