........ Merged revisions 410671 from http://svn.asterisk.org/svn/asterisk/branches/12 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@410672 65c4cc65-6c06-0410-ace0-fbb531ad65f3
211 lines
5.1 KiB
C
211 lines
5.1 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2013 Digium, Inc.
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*
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* Richard Mudgett <rmudgett@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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/*!
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* \file
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* \brief ConfBridge announcer channel driver
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*
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* \author Richard Mudgett <rmudgett@digium.com>
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*
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* See Also:
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* \arg \ref AstCREDITS
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/channel.h"
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#include "asterisk/bridge.h"
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#include "asterisk/core_unreal.h"
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#include "include/confbridge.h"
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/* ------------------------------------------------------------------- */
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/*! ConfBridge announcer channel private. */
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struct announce_pvt {
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/*! Unreal channel driver base class values. */
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struct ast_unreal_pvt base;
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/*! Conference bridge associated with this announcer. */
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struct ast_bridge *bridge;
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};
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static int announce_call(struct ast_channel *chan, const char *addr, int timeout)
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{
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/* Make sure anyone calling ast_call() for this channel driver is going to fail. */
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return -1;
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}
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static int announce_hangup(struct ast_channel *ast)
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{
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struct announce_pvt *p = ast_channel_tech_pvt(ast);
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int res;
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if (!p) {
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return -1;
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}
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/* give the pvt a ref to fulfill calling requirements. */
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ao2_ref(p, +1);
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res = ast_unreal_hangup(&p->base, ast);
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ao2_ref(p, -1);
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return res;
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}
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static void announce_pvt_destructor(void *vdoomed)
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{
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struct announce_pvt *doomed = vdoomed;
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ao2_cleanup(doomed->bridge);
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doomed->bridge = NULL;
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ast_unreal_destructor(&doomed->base);
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}
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static struct ast_channel *announce_request(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *data, int *cause)
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{
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struct ast_channel *chan;
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const char *conf_name = data;
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RAII_VAR(struct confbridge_conference *, conference, NULL, ao2_cleanup);
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RAII_VAR(struct announce_pvt *, pvt, NULL, ao2_cleanup);
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conference = ao2_find(conference_bridges, conf_name, OBJ_KEY);
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if (!conference) {
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return NULL;
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}
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ast_assert(conference->bridge != NULL);
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/* Allocate a new private structure and then Asterisk channels */
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pvt = (struct announce_pvt *) ast_unreal_alloc(sizeof(*pvt), announce_pvt_destructor,
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cap);
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if (!pvt) {
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return NULL;
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}
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ast_set_flag(&pvt->base, AST_UNREAL_NO_OPTIMIZATION);
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ast_copy_string(pvt->base.name, conf_name, sizeof(pvt->base.name));
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pvt->bridge = conference->bridge;
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ao2_ref(pvt->bridge, +1);
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chan = ast_unreal_new_channels(&pvt->base, conf_announce_get_tech(),
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AST_STATE_UP, AST_STATE_UP, NULL, NULL, assignedids, requestor, NULL);
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if (chan) {
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ast_answer(pvt->base.owner);
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ast_answer(pvt->base.chan);
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if (ast_channel_add_bridge_role(pvt->base.chan, "announcer")) {
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ast_hangup(chan);
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chan = NULL;
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}
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}
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return chan;
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}
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static struct ast_channel_tech announce_tech = {
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.type = "CBAnn",
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.description = "Conference Bridge Announcing Channel",
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.requester = announce_request,
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.call = announce_call,
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.hangup = announce_hangup,
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.send_digit_begin = ast_unreal_digit_begin,
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.send_digit_end = ast_unreal_digit_end,
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.read = ast_unreal_read,
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.write = ast_unreal_write,
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.write_video = ast_unreal_write,
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.exception = ast_unreal_read,
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.indicate = ast_unreal_indicate,
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.fixup = ast_unreal_fixup,
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.send_html = ast_unreal_sendhtml,
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.send_text = ast_unreal_sendtext,
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.queryoption = ast_unreal_queryoption,
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.setoption = ast_unreal_setoption,
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.properties = AST_CHAN_TP_INTERNAL,
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};
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struct ast_channel_tech *conf_announce_get_tech(void)
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{
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return &announce_tech;
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}
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void conf_announce_channel_depart(struct ast_channel *chan)
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{
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struct announce_pvt *p = ast_channel_tech_pvt(chan);
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if (!p) {
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return;
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}
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ao2_ref(p, +1);
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ao2_lock(p);
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if (!ast_test_flag(&p->base, AST_UNREAL_CARETAKER_THREAD)) {
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ao2_unlock(p);
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ao2_ref(p, -1);
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return;
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}
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ast_clear_flag(&p->base, AST_UNREAL_CARETAKER_THREAD);
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chan = p->base.chan;
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ao2_unlock(p);
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ao2_ref(p, -1);
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if (chan) {
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ast_bridge_depart(chan);
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ast_channel_unref(chan);
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}
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}
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int conf_announce_channel_push(struct ast_channel *ast)
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{
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struct ast_bridge_features *features;
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struct ast_channel *chan;
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RAII_VAR(struct announce_pvt *, p, NULL, ao2_cleanup);
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{
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SCOPED_CHANNELLOCK(lock, ast);
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p = ast_channel_tech_pvt(ast);
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if (!p) {
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return -1;
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}
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ao2_ref(p, +1);
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chan = p->base.chan;
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if (!chan) {
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return -1;
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}
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ast_channel_ref(chan);
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}
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features = ast_bridge_features_new();
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if (!features) {
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ast_channel_unref(chan);
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return -1;
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}
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ast_set_flag(&features->feature_flags, AST_BRIDGE_CHANNEL_FLAG_IMMOVABLE);
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/* Impart the output channel into the bridge */
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if (ast_bridge_impart(p->bridge, chan, NULL, features,
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AST_BRIDGE_IMPART_CHAN_DEPARTABLE)) {
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ast_bridge_features_destroy(features);
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ast_channel_unref(chan);
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return -1;
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}
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ao2_lock(p);
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ast_set_flag(&p->base, AST_UNREAL_CARETAKER_THREAD);
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ao2_unlock(p);
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return 0;
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}
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