confbridge: Fix MOH on simultaneous user entry to a new conference.
[asterisk/asterisk.git] / apps / confbridge / conf_state_multi_marked.c
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 2012, Terry Wilson
5  *
6  * Terry Wilson <twilson@digium.com>
7  *
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.
13  *
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.
17  *
18  * Please follow coding guidelines
19  * http://svn.digium.com/view/asterisk/trunk/doc/CODING-GUIDELINES
20  */
21
22 /*! \file
23  *
24  * \brief Confbridge state handling for the MULTI_MARKED state
25  *
26  * \author\verbatim Terry Wilson <twilson@digium.com> \endverbatim
27  *
28  * \ingroup applications
29  */
30
31 /*** MODULEINFO
32         <support_level>core</support_level>
33  ***/
34
35 #include "asterisk.h"
36 #include "asterisk/utils.h"
37 #include "asterisk/linkedlists.h"
38 #include "include/confbridge.h"
39 #include "asterisk/musiconhold.h"
40 #include "include/conf_state.h"
41
42 static void join_active(struct conference_bridge_user *cbu);
43 static void join_marked(struct conference_bridge_user *cbu);
44 static void leave_active(struct conference_bridge_user *cbu);
45 static void leave_marked(struct conference_bridge_user *cbu);
46 static void transition_to_marked(struct conference_bridge_user *cbu);
47
48 static struct conference_state STATE_MULTI_MARKED = {
49         .name = "MULTI_MARKED",
50         .join_unmarked = join_active,
51         .join_waitmarked = join_active,
52         .join_marked = join_marked,
53         .leave_unmarked = leave_active,
54         .leave_waitmarked = leave_active,
55         .leave_marked = leave_marked,
56         .entry = transition_to_marked,
57 };
58 struct conference_state *CONF_STATE_MULTI_MARKED = &STATE_MULTI_MARKED;
59
60 static void join_active(struct conference_bridge_user *cbu)
61 {
62         conf_add_user_active(cbu->conference_bridge, cbu);
63 }
64
65 static void join_marked(struct conference_bridge_user *cbu)
66 {
67         conf_add_user_marked(cbu->conference_bridge, cbu);
68 }
69
70 static void leave_active(struct conference_bridge_user *cbu)
71 {
72         conf_remove_user_active(cbu->conference_bridge, cbu);
73         if (cbu->conference_bridge->activeusers == 1) {
74                 conf_change_state(cbu, CONF_STATE_SINGLE_MARKED);
75         }
76 }
77
78 static void leave_marked(struct conference_bridge_user *cbu)
79 {
80         struct conference_bridge_user *cbu_iter;
81
82         conf_remove_user_marked(cbu->conference_bridge, cbu);
83
84         if (cbu->conference_bridge->markedusers == 0) {
85                 /* Play back the audio prompt saying the leader has left the conference */
86                 if (!ast_test_flag(&cbu->u_profile, USER_OPT_QUIET)) {
87                         ao2_unlock(cbu->conference_bridge);
88                         ast_autoservice_start(cbu->chan);
89                         play_sound_file(cbu->conference_bridge,
90                                 conf_get_sound(CONF_SOUND_LEADER_HAS_LEFT, cbu->b_profile.sounds));
91                         ast_autoservice_stop(cbu->chan);
92                         ao2_lock(cbu->conference_bridge);
93                 }
94
95                 AST_LIST_TRAVERSE_SAFE_BEGIN(&cbu->conference_bridge->active_list, cbu_iter, list) {
96                         /* Kick ENDMARKED cbu_iters */
97                         if (ast_test_flag(&cbu_iter->u_profile, USER_OPT_ENDMARKED)) {
98                                 AST_LIST_REMOVE_CURRENT(list);
99                                 cbu_iter->conference_bridge->activeusers--;
100                                 cbu_iter->kicked = 1;
101                                 ast_bridge_remove(cbu_iter->conference_bridge->bridge, cbu_iter->chan);
102                         } else if (ast_test_flag(&cbu_iter->u_profile, USER_OPT_WAITMARKED) &&
103                                         !ast_test_flag(&cbu_iter->u_profile, USER_OPT_MARKEDUSER)) {
104                                 AST_LIST_REMOVE_CURRENT(list);
105                                 cbu_iter->conference_bridge->activeusers--;
106                                 AST_LIST_INSERT_TAIL(&cbu_iter->conference_bridge->waiting_list, cbu_iter, list);
107                                 cbu_iter->conference_bridge->waitingusers++;
108                                 /* Handle muting/moh of cbu_iter if necessary */
109                                 if (ast_test_flag(&cbu_iter->u_profile, USER_OPT_MUSICONHOLD)) {
110                                         cbu_iter->features.mute = 1;
111                                         conf_moh_start(cbu_iter);
112                                 }
113                         }
114                 }
115                 AST_LIST_TRAVERSE_SAFE_END;
116         }
117
118         switch (cbu->conference_bridge->activeusers) {
119         case 0:
120                 /* Implies markedusers == 0 */
121                 switch (cbu->conference_bridge->waitingusers) {
122                 case 0:
123                         conf_change_state(cbu, CONF_STATE_EMPTY);
124                         break;
125                 default:
126                         conf_change_state(cbu, CONF_STATE_INACTIVE);
127                         break;
128                 }
129                 break;
130         case 1:
131                 switch (cbu->conference_bridge->markedusers) {
132                 case 0:
133                         conf_change_state(cbu, CONF_STATE_SINGLE);
134                         break;
135                 case 1:
136                         /* XXX I seem to remember doing this for a reason, but right now it escapes me
137                          * how we could possibly ever have a waiting user while we have a marked user */
138                         switch (cbu->conference_bridge->waitingusers) {
139                         case 0:
140                                 conf_change_state(cbu, CONF_STATE_SINGLE_MARKED);
141                                 break;
142                         case 1: break; /* Stay in marked */
143                         }
144                         break;
145                 }
146                 break;
147         default:
148                 switch (cbu->conference_bridge->markedusers) {
149                 case 0:
150                         conf_change_state(cbu, CONF_STATE_MULTI);
151                         break;
152                 default: break; /* Stay in marked */
153                 }
154         }
155 }
156
157 static void transition_to_marked(struct conference_bridge_user *cbu)
158 {
159         struct conference_bridge_user *cbu_iter;
160
161         /* Play the audio file stating they are going to be placed into the conference */
162         if (cbu->conference_bridge->markedusers == 1 && ast_test_flag(&cbu->u_profile, USER_OPT_MARKEDUSER)) {
163                 conf_handle_first_marked_common(cbu);
164         }
165
166         /* Move all waiting users to active, stopping MOH and umuting if necessary */
167         AST_LIST_TRAVERSE_SAFE_BEGIN(&cbu->conference_bridge->waiting_list, cbu_iter, list) {
168                 AST_LIST_REMOVE_CURRENT(list);
169                 cbu->conference_bridge->waitingusers--;
170                 AST_LIST_INSERT_TAIL(&cbu->conference_bridge->active_list, cbu_iter, list);
171                 cbu->conference_bridge->activeusers++;
172                 if (cbu_iter->playing_moh) {
173                         conf_moh_stop(cbu_iter);
174                 }
175                 /* only unmute them if they are not supposed to start muted */
176                 if (!ast_test_flag(&cbu_iter->u_profile, USER_OPT_STARTMUTED)) {
177                         cbu_iter->features.mute = 0;
178                 }
179         }
180         AST_LIST_TRAVERSE_SAFE_END;
181 }