[asterisk-commits] file: branch file/bridging r79047 - /team/file/bridging/apps/app_confbridge.c
SVN commits to the Asterisk project
asterisk-commits at lists.digium.com
Fri Aug 10 13:13:56 CDT 2007
Author: file
Date: Fri Aug 10 13:13:56 2007
New Revision: 79047
URL: http://svn.digium.com/view/asterisk?view=rev&rev=79047
Log:
Add ConfBridge application. This totals around 150 lines and implements a very basic conferencing application utilizing the bridging core.
Added:
team/file/bridging/apps/app_confbridge.c (with props)
Added: team/file/bridging/apps/app_confbridge.c
URL: http://svn.digium.com/view/asterisk/team/file/bridging/apps/app_confbridge.c?view=auto&rev=79047
==============================================================================
--- team/file/bridging/apps/app_confbridge.c (added)
+++ team/file/bridging/apps/app_confbridge.c Fri Aug 10 13:13:56 2007
@@ -1,0 +1,165 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2007, Digium, Inc.
+ *
+ * Joshua Colp <jcolp at digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief Conference Bridge application
+ *
+ * \author\verbatim Joshua Colp <jcolp at digium.com> \endverbatim
+ *
+ * This is a conference bridge application utilizing the bridging core.
+ * \ingroup applications
+ */
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "asterisk/file.h"
+#include "asterisk/logger.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/module.h"
+#include "asterisk/lock.h"
+#include "asterisk/app.h"
+#include "asterisk/bridging.h"
+
+static char *app = "ConfBridge";
+static char *synopsis =
+"Conference Bridge application.";
+static char *descrip = "This application is a template to build other applications from.\n"
+ " It shows you the basic structure to create your own Asterisk applications.\n";
+
+enum {
+ OPTION_DYNAMIC = (1 << 0),
+} option_flags;
+
+AST_APP_OPTIONS(app_opts,{
+ AST_APP_OPTION('d', OPTION_DYNAMIC),
+});
+
+struct conference_bridge {
+ const char *name; /*!< Name of the conference bridge */
+ struct ast_bridge *bridge; /*!< Bridge structure doing the mixing */
+ int users; /*!< Number of users present */
+ int dynamic:1; /*!< Is this conference bridge dynamically generated? */
+ AST_LIST_ENTRY(conference_bridge) list; /*!< Linked list information */
+};
+
+static AST_LIST_HEAD_STATIC(conference_bridges, conference_bridge);
+
+static struct conference_bridge *find_conference_bridge(const char *name, int dynamic)
+{
+ struct conference_bridge *conference_bridge = NULL;
+
+ AST_LIST_LOCK(&conference_bridges);
+
+ /* Look for an already existing conference bridge */
+ AST_LIST_TRAVERSE(&conference_bridges, conference_bridge, list) {
+ if (!strcasecmp(conference_bridge->name, name))
+ break;
+ }
+
+ /* If one was not found and we can dynamically create it, do so */
+ if (!conference_bridge && dynamic && (conference_bridge = ast_calloc(1, sizeof(*conference_bridge)))) {
+ conference_bridge->dynamic = 1;
+ conference_bridge->name = name;
+ if (!(conference_bridge->bridge = ast_bridge_new(AST_BRIDGE_CAPABILITY_MULTIMIX, 0))) {
+ free(conference_bridge);
+ conference_bridge = NULL;
+ } else
+ AST_LIST_INSERT_TAIL(&conference_bridges, conference_bridge, list);
+ }
+
+ /* Increment user count if we found a conference bridge */
+ if (conference_bridge)
+ ast_atomic_fetchadd_int(&conference_bridge->users, +1);
+
+ AST_LIST_UNLOCK(&conference_bridges);
+
+ return conference_bridge;
+}
+
+static int app_exec(struct ast_channel *chan, void *data)
+{
+ int res = 0;
+ struct ast_flags flags;
+ char *parse;
+ struct conference_bridge *conference_bridge = NULL;
+ AST_DECLARE_APP_ARGS(args,
+ AST_APP_ARG(conf_name);
+ AST_APP_ARG(options);
+ );
+
+ if (ast_strlen_zero(data)) {
+ ast_log(LOG_WARNING, "%s requires an argument (conference name[,options])\n", app);
+ return -1;
+ }
+
+ /* We need to make a copy of the input string if we are going to modify it! */
+ parse = ast_strdupa(data);
+
+ AST_STANDARD_APP_ARGS(args, parse);
+
+ if (args.argc == 2)
+ ast_app_parse_options(app_opts, &flags, NULL, args.options);
+
+ /* Look for a conference bridge matching the provided name */
+ if (!(conference_bridge = find_conference_bridge(args.conf_name, ast_test_flag(&flags, OPTION_DYNAMIC)))) {
+ ast_log(LOG_WARNING, "Conference bridge with name %s does not exist.\n", args.conf_name);
+ return -1;
+ }
+
+ /* Actually join the bridge */
+ ast_bridge_join(conference_bridge->bridge, chan);
+
+ /* Drop ourselves from the conference bridge and remove it if needed */
+ AST_LIST_LOCK(&conference_bridges);
+ /* Decrement users count, and if this is dynamic remove it if we are the last one */
+ if (ast_atomic_fetchadd_int(&conference_bridge->users, -1) == 1 && conference_bridge->dynamic) {
+ /* Remove from list */
+ AST_LIST_REMOVE(&conference_bridges, conference_bridge, list);
+ /* Drop bridge */
+ ast_bridge_destroy(conference_bridge->bridge);
+ /* Finally deallocate ourselves */
+ ast_free(conference_bridge);
+ }
+ AST_LIST_UNLOCK(&conference_bridges);
+
+ return res;
+}
+
+static int unload_module(void)
+{
+ return ast_unregister_application(app);
+}
+
+static int load_module(void)
+{
+ if (ast_register_application(app, app_exec, synopsis, descrip))
+ return AST_MODULE_LOAD_DECLINE;
+
+ return AST_MODULE_LOAD_SUCCESS;
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Conference Bridge Application");
Propchange: team/file/bridging/apps/app_confbridge.c
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