ConfBridge announcer channel driver. More...

#include "asterisk.h"
#include "asterisk/channel.h"
#include "asterisk/bridge.h"
#include "asterisk/core_unreal.h"
#include "include/confbridge.h"

Include dependency graph for conf_chan_announce.c:

Go to the source code of this file.

Data Structures
struct	announce_pvt

Functions
static int	announce_call (struct ast_channel chan, const char addr, int timeout)

static int	announce_hangup (struct ast_channel *ast)

static void	announce_pvt_destructor (void *vdoomed)

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)

int	conf_announce_channel_push (struct ast_channel *ast)
	Push the announcer channel into the conference. More...

struct ast_channel_tech *	conf_announce_get_tech (void)
	Get ConfBridge announce channel technology struct. More...

Variables
static struct ast_channel_tech	announce_tech

Detailed Description

ConfBridge announcer channel driver.

Author: Richard Mudgett rmudg.nosp@m.ett@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Function Documentation

◆ announce_call()

static int announce_call	(	struct ast_channel *	chan,
		const char *	addr,
		int	timeout
	)

static

Definition at line 47 of file conf_chan_announce.c.

{
    /* Make sure anyone calling ast_call() for this channel driver is going to fail. */
    return -1;
}

◆ announce_hangup()

static int announce_hangup ( struct ast_channel * ast )

static

Definition at line 53 of file conf_chan_announce.c.

{
    struct announce_pvt *p = ast_channel_tech_pvt(ast);
    int res;
 
    if (!p) {
        return -1;
    }
 
    /* give the pvt a ref to fulfill calling requirements. */
    ao2_ref(p, +1);
    res = ast_unreal_hangup(&p->base, ast);
    ao2_ref(p, -1);
 
    return res;
}

References ao2_ref, ast_channel_tech_pvt(), ast_unreal_hangup(), and announce_pvt::base.

◆ announce_pvt_destructor()

static void announce_pvt_destructor ( void * vdoomed )

static

Definition at line 70 of file conf_chan_announce.c.

{
    struct announce_pvt *doomed = vdoomed;
 
    ao2_cleanup(doomed->bridge);
    doomed->bridge = NULL;
    ast_unreal_destructor(&doomed->base);
}

References ao2_cleanup, ast_unreal_destructor(), announce_pvt::base, announce_pvt::bridge, and NULL.

Referenced by announce_request().

◆ announce_request()

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
	)

static

Definition at line 79 of file conf_chan_announce.c.

{
    struct ast_channel *chan;
    const char *conf_name = data;
    RAII_VAR(struct confbridge_conference *, conference, NULL, ao2_cleanup);
    RAII_VAR(struct announce_pvt *, pvt, NULL, ao2_cleanup);
 
    conference = ao2_find(conference_bridges, conf_name, OBJ_KEY);
    if (!conference) {
        return NULL;
    }
    ast_assert(conference->bridge != NULL);
 
    /* Allocate a new private structure and then Asterisk channels */
    pvt = (struct announce_pvt *) ast_unreal_alloc(sizeof(*pvt), announce_pvt_destructor,
        cap);
    if (!pvt) {
        return NULL;
    }
    ast_set_flag(&pvt->base, AST_UNREAL_NO_OPTIMIZATION);
    ast_copy_string(pvt->base.name, conf_name, sizeof(pvt->base.name));
    pvt->bridge = conference->bridge;
    ao2_ref(pvt->bridge, +1);
 
    chan = ast_unreal_new_channels(&pvt->base, conf_announce_get_tech(),
        AST_STATE_UP, AST_STATE_UP, NULL, NULL, assignedids, requestor, 0);
    if (chan) {
        ast_answer(pvt->base.owner);
        ast_answer(pvt->base.chan);
        if (ast_channel_add_bridge_role(pvt->base.chan, "announcer")) {
            ast_hangup(chan);
            chan = NULL;
        }
    }
 
    return chan;
}

References announce_pvt_destructor(), ao2_cleanup, ao2_find, ao2_ref, ast_answer(), ast_assert, ast_channel_add_bridge_role(), ast_copy_string(), ast_hangup(), ast_set_flag, AST_STATE_UP, ast_unreal_alloc(), ast_unreal_new_channels(), AST_UNREAL_NO_OPTIMIZATION, conf_announce_get_tech(), conference_bridges, ast_channel::data, NULL, OBJ_KEY, and RAII_VAR.

◆ conf_announce_channel_push()

int conf_announce_channel_push ( struct ast_channel * ast )

Push the announcer channel into the conference.

Since: 12.0.0

Parameters

ast	Either channel in the announcer channel pair.

Return values

0	on success.
-1	on error.

Definition at line 144 of file conf_chan_announce.c.

{
    struct ast_bridge_features *features;
    struct ast_channel *chan;
    RAII_VAR(struct announce_pvt *, p, NULL, ao2_cleanup);
 
    {
        SCOPED_CHANNELLOCK(lock, ast);
 
        p = ast_channel_tech_pvt(ast);
        if (!p) {
            return -1;
        }
        ao2_ref(p, +1);
        chan = p->base.chan;
        if (!chan) {
            return -1;
        }
    }
 
    features = ast_bridge_features_new();
    if (!features) {
        return -1;
    }
    ast_set_flag(&features->feature_flags, AST_BRIDGE_CHANNEL_FLAG_IMMOVABLE);
 
    /* Impart the output channel into the bridge */
    if (ast_bridge_impart(p->bridge, chan, NULL, features,
        AST_BRIDGE_IMPART_CHAN_INDEPENDENT)) {
        return -1;
    }
    ao2_lock(p);
    ast_set_flag(&p->base, AST_UNREAL_CARETAKER_THREAD);
    ao2_unlock(p);
    return 0;
}