93 lines
3.4 KiB
C
93 lines
3.4 KiB
C
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2012, Terry Wilson
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*
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* Terry Wilson <twilson@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Confbridge state handling
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*
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* \author\verbatim Terry Wilson <twilson@digium.com> \endverbatim
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*
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* See https://wiki.asterisk.org/wiki/display/AST/Confbridge+state+changes for
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* a more complete description of how conference states work.
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#ifndef _CONF_STATE_H_
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#define _CONF_STATE_H_
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struct confbridge_state;
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struct confbridge_conference;
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struct confbridge_user;
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typedef void (*conference_event_fn)(struct confbridge_user *user);
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typedef void (*conference_entry_fn)(struct confbridge_user *user);
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typedef void (*conference_exit_fn)(struct confbridge_user *user);
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/*! \brief A conference state object to hold the various state callback functions */
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struct confbridge_state {
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const char *name;
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conference_event_fn join_unmarked; /*!< Handle an unmarked join event */
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conference_event_fn join_waitmarked; /*!< Handle a waitmarked join event */
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conference_event_fn join_marked; /*!< Handle a marked join event */
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conference_event_fn leave_unmarked; /*!< Handle an unmarked leave event */
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conference_event_fn leave_waitmarked; /*!< Handle a waitmarked leave event */
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conference_event_fn leave_marked; /*!< Handle a marked leave event */
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conference_entry_fn entry; /*!< Function to handle entry to a state */
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conference_exit_fn exit; /*!< Function to handle exiting from a state */
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};
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/*! \brief Conference state with no active or waiting users */
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extern struct confbridge_state *CONF_STATE_EMPTY;
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/*! \brief Conference state with only waiting users */
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extern struct confbridge_state *CONF_STATE_INACTIVE;
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/*! \brief Conference state with only a single unmarked active user */
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extern struct confbridge_state *CONF_STATE_SINGLE;
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/*! \brief Conference state with only a single marked active user */
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extern struct confbridge_state *CONF_STATE_SINGLE_MARKED;
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/*! \brief Conference state with multiple active users, but no marked users */
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extern struct confbridge_state *CONF_STATE_MULTI;
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/*! \brief Conference state with multiple active users and at least one marked user */
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extern struct confbridge_state *CONF_STATE_MULTI_MARKED;
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/*! \brief Execute conference state transition because of a user action
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* \param user The user that joined/left
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* \param newstate The state to transition to
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*/
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void conf_change_state(struct confbridge_user *user, struct confbridge_state *newstate);
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/* Common event handlers shared between different states */
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/*! \brief Logic to execute every time a waitmarked user joins an unmarked conference */
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void conf_default_join_waitmarked(struct confbridge_user *user);
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/*! \brief Logic to execute every time a waitmarked user leaves an unmarked conference */
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void conf_default_leave_waitmarked(struct confbridge_user *user);
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/*! \brief A handler for join/leave events that are invalid in a particular state */
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void conf_invalid_event_fn(struct confbridge_user *user);
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#endif
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