2 * Asterisk -- An open source telephony toolkit.
4 * Copyright (C) 2011, Digium, Inc.
6 * David Vossel <dvossel@digium.com>
7 * Joshua Colp <jcolp@digium.com>
9 * See http://www.asterisk.org for more information about
10 * the Asterisk project. Please do not directly contact
11 * any of the maintainers of this project for assistance;
12 * the project provides a web site, mailing lists and IRC
13 * channels for your use.
15 * This program is free software, distributed under the terms of
16 * the GNU General Public License Version 2. See the LICENSE file
17 * at the top of the source tree.
25 #include "asterisk/app.h"
26 #include "asterisk/logger.h"
27 #include "asterisk/linkedlists.h"
28 #include "asterisk/channel.h"
29 #include "asterisk/bridging.h"
30 #include "asterisk/bridging_features.h"
32 /* Maximum length of a conference bridge name */
33 #define MAX_CONF_NAME 32
34 /* Maximum length of a conference pin */
37 #define DEFAULT_USER_PROFILE "default_user"
38 #define DEFAULT_BRIDGE_PROFILE "default_bridge"
40 #define DEFAULT_TALKING_THRESHOLD 160
41 #define DEFAULT_SILENCE_THRESHOLD 2500
43 enum user_profile_flags {
44 USER_OPT_ADMIN = (1 << 0), /*!< Set if the caller is an administrator */
45 USER_OPT_NOONLYPERSON = (1 << 1), /*!< Set if the "you are currently the only person in this conference" sound file should not be played */
46 USER_OPT_MARKEDUSER = (1 << 2), /*!< Set if the caller is a marked user */
47 USER_OPT_STARTMUTED = (1 << 3), /*!< Set if the caller should be initially set muted */
48 USER_OPT_MUSICONHOLD = (1 << 4), /*!< Set if music on hold should be played if nobody else is in the conference bridge */
49 USER_OPT_QUIET = (1 << 5), /*!< Set if no audio prompts should be played */
50 USER_OPT_ANNOUNCEUSERCOUNT = (1 << 6), /*!< Set if the number of users should be announced to the caller */
51 USER_OPT_WAITMARKED = (1 << 7), /*!< Set if the user must wait for a marked user before starting */
52 USER_OPT_ENDMARKED = (1 << 8), /*!< Set if the user should be kicked after the last Marked user exits */
53 USER_OPT_DENOISE = (1 << 9), /*!< Sets if denoise filter should be used on audio before mixing. */
54 USER_OPT_ANNOUNCE_JOIN_LEAVE = (1 << 10), /*!< Sets if the user's name should be recorded and announced on join and leave. */
55 USER_OPT_TALKER_DETECT = (1 << 11), /*!< Sets if start and stop talking events should generated for this user over AMI. */
56 USER_OPT_DROP_SILENCE = (1 << 12), /*!< Sets if silence should be dropped from the mix or not. */
57 USER_OPT_DTMF_PASS = (1 << 13), /*!< Sets if dtmf should be passed into the conference or not */
58 USER_OPT_ANNOUNCEUSERCOUNTALL = (1 << 14), /*!< Sets if the number of users should be announced to everyone. */
59 USER_OPT_JITTERBUFFER = (1 << 15), /*!< Places a jitterbuffer on the user. */
62 enum bridge_profile_flags {
63 BRIDGE_OPT_RECORD_CONFERENCE = (1 << 0), /*!< Set if the conference should be recorded */
64 BRIDGE_OPT_VIDEO_SRC_LAST_MARKED = (1 << 1), /*!< Set if conference should feed video of last marked user to all participants. */
65 BRIDGE_OPT_VIDEO_SRC_FIRST_MARKED = (1 << 2), /*!< Set if conference should feed video of first marked user to all participants. */
66 BRIDGE_OPT_VIDEO_SRC_FOLLOW_TALKER = (1 << 3), /*!< Set if conference set the video feed to follow the loudest talker. */
69 enum conf_menu_action_id {
70 MENU_ACTION_TOGGLE_MUTE = 1,
72 MENU_ACTION_PLAYBACK_AND_CONTINUE,
73 MENU_ACTION_INCREASE_LISTENING,
74 MENU_ACTION_DECREASE_LISTENING,
75 MENU_ACTION_RESET_LISTENING,
76 MENU_ACTION_RESET_TALKING,
77 MENU_ACTION_INCREASE_TALKING,
78 MENU_ACTION_DECREASE_TALKING,
79 MENU_ACTION_DIALPLAN_EXEC,
80 MENU_ACTION_ADMIN_TOGGLE_LOCK,
81 MENU_ACTION_ADMIN_KICK_LAST,
84 MENU_ACTION_SET_SINGLE_VIDEO_SRC,
85 MENU_ACTION_RELEASE_SINGLE_VIDEO_SRC,
86 MENU_ACTION_PARTICIPANT_COUNT,
87 MENU_ACTION_ADMIN_TOGGLE_MUTE_PARTICIPANTS,
90 /*! The conference menu action contains both
91 * the action id that represents the action that
92 * must take place, along with any data associated
93 * with that action. */
94 struct conf_menu_action {
95 enum conf_menu_action_id id;
97 char playback_file[PATH_MAX];
99 char context[AST_MAX_CONTEXT];
100 char exten[AST_MAX_EXTENSION];
104 AST_LIST_ENTRY(conf_menu_action) action;
107 /*! Conference menu entries contain the DTMF sequence
108 * and the list of actions that are associated with that
110 struct conf_menu_entry {
111 /*! the DTMF sequence that triggers the actions */
112 char dtmf[MAXIMUM_DTMF_FEATURE_STRING];
113 /*! The actions associated with this menu entry. */
114 AST_LIST_HEAD_NOLOCK(, conf_menu_action) actions;
115 AST_LIST_ENTRY(conf_menu_entry) entry;
118 /*! Conference menu structure. Contains a list
119 * of DTMF sequences coupled with the actions those
120 * sequences invoke.*/
123 AST_LIST_HEAD_NOLOCK(, conf_menu_entry) entries;
126 struct user_profile {
130 char announcement[PATH_MAX];
132 unsigned int announce_user_count_all_after;
133 /*! The time in ms of talking before a user is considered to be talking by the dsp. */
134 unsigned int talking_threshold;
135 /*! The time in ms of silence before a user is considered to be silent by the dsp. */
136 unsigned int silence_threshold;
140 CONF_SOUND_HAS_JOINED,
146 CONF_SOUND_THERE_ARE,
147 CONF_SOUND_OTHER_IN_PARTY,
148 CONF_SOUND_PLACE_IN_CONF,
149 CONF_SOUND_WAIT_FOR_LEADER,
150 CONF_SOUND_LEADER_HAS_LEFT,
152 CONF_SOUND_INVALID_PIN,
153 CONF_SOUND_ONLY_PERSON,
155 CONF_SOUND_LOCKED_NOW,
156 CONF_SOUND_UNLOCKED_NOW,
157 CONF_SOUND_ERROR_MENU,
160 CONF_SOUND_PARTICIPANTS_MUTED,
161 CONF_SOUND_PARTICIPANTS_UNMUTED,
164 struct bridge_profile_sounds {
165 AST_DECLARE_STRING_FIELDS(
166 AST_STRING_FIELD(hasjoin);
167 AST_STRING_FIELD(hasleft);
168 AST_STRING_FIELD(kicked);
169 AST_STRING_FIELD(muted);
170 AST_STRING_FIELD(unmuted);
171 AST_STRING_FIELD(onlyone);
172 AST_STRING_FIELD(thereare);
173 AST_STRING_FIELD(otherinparty);
174 AST_STRING_FIELD(placeintoconf);
175 AST_STRING_FIELD(waitforleader);
176 AST_STRING_FIELD(leaderhasleft);
177 AST_STRING_FIELD(getpin);
178 AST_STRING_FIELD(invalidpin);
179 AST_STRING_FIELD(onlyperson);
180 AST_STRING_FIELD(locked);
181 AST_STRING_FIELD(lockednow);
182 AST_STRING_FIELD(unlockednow);
183 AST_STRING_FIELD(errormenu);
184 AST_STRING_FIELD(leave);
185 AST_STRING_FIELD(join);
186 AST_STRING_FIELD(participantsmuted);
187 AST_STRING_FIELD(participantsunmuted);
191 struct bridge_profile {
193 char rec_file[PATH_MAX];
195 unsigned int max_members; /*!< The maximum number of participants allowed in the conference */
196 unsigned int internal_sample_rate; /*!< The internal sample rate of the bridge. 0 when set to auto adjust mode. */
197 unsigned int mix_interval; /*!< The internal mixing interval used by the bridge. When set to 0 the bridgewill use a default interval. */
198 struct bridge_profile_sounds *sounds;
201 /*! \brief The structure that represents a conference bridge */
202 struct conference_bridge {
203 char name[MAX_CONF_NAME]; /*!< Name of the conference bridge */
204 struct ast_bridge *bridge; /*!< Bridge structure doing the mixing */
205 struct bridge_profile b_profile; /*!< The Bridge Configuration Profile */
206 unsigned int users; /*!< Number of users present */
207 unsigned int markedusers; /*!< Number of marked users present */
208 unsigned int locked:1; /*!< Is this conference bridge locked? */
209 unsigned int muted:1; /*!< Is this conference bridge muted? */
210 struct ast_channel *playback_chan; /*!< Channel used for playback into the conference bridge */
211 struct ast_channel *record_chan; /*!< Channel used for recording the conference */
212 pthread_t record_thread; /*!< The thread the recording chan lives in */
213 ast_mutex_t playback_lock; /*!< Lock used for playback channel */
214 AST_LIST_HEAD_NOLOCK(, conference_bridge_user) users_list; /*!< List of users participating in the conference bridge */
217 /*! \brief The structure that represents a conference bridge user */
218 struct conference_bridge_user {
219 struct conference_bridge *conference_bridge; /*!< Conference bridge they are participating in */
220 struct bridge_profile b_profile; /*!< The Bridge Configuration Profile */
221 struct user_profile u_profile; /*!< The User Configuration Profile */
222 char menu_name[64]; /*!< The name of the DTMF menu assigned to this user */
223 char name_rec_location[PATH_MAX]; /*!< Location of the User's name recorded file if it exists */
224 struct ast_channel *chan; /*!< Asterisk channel participating */
225 struct ast_bridge_features features; /*!< Bridge features structure */
226 struct ast_bridge_tech_optimizations tech_args; /*!< Bridge technology optimizations for talk detection */
227 unsigned int kicked:1; /*!< User has been kicked from the conference */
228 unsigned int playing_moh:1; /*!< MOH is currently being played to the user */
229 AST_LIST_ENTRY(conference_bridge_user) list; /*!< Linked list information */
232 /*! \brief load confbridge.conf file */
233 int conf_load_config(int reload);
235 /*! \brief destroy the information loaded from the confbridge.conf file*/
236 void conf_destroy_config(void);
239 * \brief find a user profile given a user profile's name and store
240 * that profile in result structure.
242 * \details This function first attempts to find any custom user
243 * profile that might exist on a channel datastore, if that doesn't
244 * exist it looks up the provided user profile name, if that doesn't
245 * exist either the default_user profile is used.
247 * \retval user profile on success
248 * \retval NULL on failure
250 const struct user_profile *conf_find_user_profile(struct ast_channel *chan, const char *user_profile_name, struct user_profile *result);
253 * \brief Find a bridge profile
255 * \details Any bridge profile found using this function must be
256 * destroyed using conf_bridge_profile_destroy. This function first
257 * attempts to find any custom bridge profile that might exist on
258 * a channel datastore, if that doesn't exist it looks up the
259 * provided bridge profile name, if that doesn't exist either
260 * the default_bridge profile is used.
262 * \retval Bridge profile on success
263 * \retval NULL on failure
265 const struct bridge_profile *conf_find_bridge_profile(struct ast_channel *chan, const char *bridge_profile_name, struct bridge_profile *result);
268 * \brief Destroy a bridge profile found by 'conf_find_bridge_profile'
270 void conf_bridge_profile_destroy(struct bridge_profile *b_profile);
273 * \brief copies a bridge profile
274 * \note conf_bridge_profile_destroy must be called on the dst structure
276 void conf_bridge_profile_copy(struct bridge_profile *dst, struct bridge_profile *src);
279 * \brief Set a DTMF menu to a conference user by menu name.
281 * \retval 0 on success, menu was found and set
282 * \retval -1 on error, menu was not found
284 int conf_set_menu_to_user(const char *menu_name, struct conference_bridge_user *conference_bridge_user);
287 * \brief Finds a menu_entry in a menu structure matched by DTMF sequence.
289 * \note the menu entry found must be destroyed using conf_menu_entry_destroy()
291 * \retval 1 success, entry is found and stored in result
292 * \retval 0 failure, no entry found for given DTMF sequence
294 int conf_find_menu_entry_by_sequence(const char *dtmf_sequence, struct conf_menu *menu, struct conf_menu_entry *result);
297 * \brief Destroys and frees all the actions stored in a menu_entry structure
299 void conf_menu_entry_destroy(struct conf_menu_entry *menu_entry);
302 * \brief Once a DTMF sequence matches a sequence in the user's DTMF menu, this function will get
303 * called to perform the menu action.
305 * \param bridge_channel, Bridged channel this is involving
306 * \param conference_bridge_user, the conference user to perform the action on.
307 * \param menu_entry, the menu entry that invoked this callback to occur.
308 * \param menu, an AO2 referenced pointer to the entire menu structure the menu_entry
311 * \note The menu_entry is a deep copy of the entry found in the menu structure. This allows
312 * for the menu_entry to be accessed without requiring the menu lock. If the menu must
313 * be accessed, the menu lock must be held. Reference counting of the menu structure is
314 * handled outside of the scope of this function.
319 int conf_handle_dtmf(
320 struct ast_bridge_channel *bridge_channel,
321 struct conference_bridge_user *conference_bridge_user,
322 struct conf_menu_entry *menu_entry,
323 struct conf_menu *menu);
326 /*! \brief Looks to see if sound file is stored in bridge profile sounds, if not
327 * default sound is provided.*/
328 const char *conf_get_sound(enum conf_sounds sound, struct bridge_profile_sounds *custom_sounds);
330 int func_confbridge_helper(struct ast_channel *chan, const char *cmd, char *data, const char *value);