chan_console.c File Reference

Cross-platform console channel driver. More...

#include "asterisk.h"
#include <signal.h>
#include <portaudio.h>
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/causes.h"
#include "asterisk/cli.h"
#include "asterisk/musiconhold.h"
#include "asterisk/callerid.h"
#include "asterisk/astobj2.h"
#include "asterisk/stasis_channels.h"
#include "asterisk/format_cache.h"

Include dependency graph for chan_console.c:

Go to the source code of this file.

Data Structures
struct	console_pvt
	Console pvt structure. More...

Macros
#define	console_pvt_lock(pvt)   ao2_lock(pvt)
	lock a console_pvt struct More...
#define	console_pvt_unlock(pvt)   ao2_unlock(pvt)
	unlock a console_pvt struct More...
#define	INPUT_CHANNELS   1
	Mono Input. More...
#define	NUM_PVT_BUCKETS   7
#define	NUM_SAMPLES   320
	The number of samples to configure the portaudio stream for. More...
#define	OUTPUT_CHANNELS   1
	Mono Output. More...
#define	SAMPLE_RATE   16000
	The sample rate to request from PortAudio. More...
#define	TEXT_SIZE   256
	Maximum text message length. More...
#define	V_BEGIN   " --- <(\"<) --- "
	Dance, Kirby, Dance! More...
#define	V_END   " --- (>\")> ---\n"

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
static char *	ast_ext_ctx (struct console_pvt *pvt, const char *src, char **ext, char **ctx)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static void	build_device (struct ast_config *cfg, const char *name)
static char *	cli_console_active (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_answer (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
	answer command from the console More...
static char *	cli_console_autoanswer (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_dial (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_flash (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_hangup (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_mute (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_sendtext (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
	Console send text CLI command. More...
static char *	cli_list_available (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_list_devices (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static struct ast_channel *	console_new (struct console_pvt *pvt, const char *ext, const char *ctx, int state, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor)
static void	destroy_pvts (void)
static struct console_pvt *	find_pvt (const char *name)
static struct console_pvt *	get_active_pvt (void)
static int	init_pvt (struct console_pvt *pvt, const char *name)
static int	load_config (int reload)
	Load the configuration. More...
static int	load_module (void)
	Load the module. More...
static int	open_stream (struct console_pvt *pvt)
static int	pvt_cmp_cb (void *obj, void *arg, int flags)
static void	pvt_destructor (void *obj)
static int	pvt_hash_cb (const void *obj, const int flags)
static int	pvt_mark_destroy_cb (void *obj, void *arg, int flags)
static struct console_pvt *	ref_pvt (struct console_pvt *pvt)
static int	reload (void)
static void	set_active (struct console_pvt *pvt, const char *value)
static void	set_pvt_defaults (struct console_pvt *pvt)
	Set default values for a pvt struct. More...
static int	start_stream (struct console_pvt *pvt)
static int	stop_stream (struct console_pvt *pvt)
static void	stop_streams (void)
static void	store_callerid (struct console_pvt *pvt, const char *value)
static void	store_config_core (struct console_pvt *pvt, const char *var, const char *value)
	Store a configuration parameter in a pvt struct. More...
static void *	stream_monitor (void *data)
	Stream monitor thread. More...
static int	unload_module (void)
static struct console_pvt *	unref_pvt (struct console_pvt *pvt)
static int	console_answer (struct ast_channel *c)
static int	console_call (struct ast_channel *c, const char *dest, int timeout)
static int	console_digit_begin (struct ast_channel *c, char digit)
static int	console_digit_end (struct ast_channel *c, char digit, unsigned int duration)
static int	console_fixup (struct ast_channel *oldchan, struct ast_channel *newchan)
static int	console_hangup (struct ast_channel *c)
static int	console_indicate (struct ast_channel *chan, int cond, const void *data, size_t datalen)
static struct ast_frame *	console_read (struct ast_channel *chan)
	Implementation of the ast_channel_tech read() callback. More...
static struct ast_channel *	console_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 int	console_text (struct ast_channel *c, const char *text)
static int	console_write (struct ast_channel *chan, struct ast_frame *f)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Console Channel Driver" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_EXTENDED, .load = load_module, .unload = unload_module, .reload = reload, .load_pri = AST_MODPRI_CHANNEL_DRIVER, }
static ast_rwlock_t	active_lock = { PTHREAD_RWLOCK_INITIALIZER , NULL, {1, 0} }
static struct console_pvt *	active_pvt
static const struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_cli_entry	cli_console []
static const char	config_file [] = "console.conf"
static struct ast_channel_tech	console_tech
static struct ast_jb_conf	default_jbconf
	Global jitterbuffer configuration. More...
static struct ast_jb_conf	global_jbconf
static struct console_pvt	globals
static ast_mutex_t	globals_lock = { PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP , NULL, {1, 0} }
static struct ao2_container *	pvts

Detailed Description

Cross-platform console channel driver.

Author

Russell Bryant russe.nosp@m.ll@d.nosp@m.igium.nosp@m..com

Note

Some of the code in this file came from chan_oss and chan_alsa. chan_oss, Mark Spencer marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m chan_oss, Luigi Rizzo chan_alsa, Matthew Fredrickson cresl.nosp@m.in@d.nosp@m.igium.nosp@m..com

Portaudio http://www.portaudio.com/

To install portaudio v19 from svn, check it out using the following command:

• svn co https://www.portaudio.com/repos/portaudio/branches/v19-devel

Note

Since this works with any audio system that libportaudio supports, including ALSA and OSS, it has come to replace the deprecated chan_alsa and chan_oss. However, the following features at least need to be implemented here for this to be a full replacement:

• Set Auto-answer from the dialplan
• transfer CLI command
• boost CLI command and .conf option
• console_video support

Definition in file chan_console.c.

Macro Definition Documentation

console_pvt_lock

#define console_pvt_lock

(

pvt

)

ao2_lock(pvt)

lock a console_pvt struct

Definition at line 228 of file chan_console.c.

console_pvt_unlock

#define console_pvt_unlock

(

pvt

)

ao2_unlock(pvt)

unlock a console_pvt struct

Definition at line 231 of file chan_console.c.

INPUT_CHANNELS

#define INPUT_CHANNELS   1

Mono Input.

Definition at line 99 of file chan_console.c.

NUM_PVT_BUCKETS

#define NUM_PVT_BUCKETS   7

Definition at line 175 of file chan_console.c.

NUM_SAMPLES

#define NUM_SAMPLES   320

The number of samples to configure the portaudio stream for.

320 samples (20 ms) is the most common frame size in Asterisk. So, the code in this module reads 320 sample frames from the portaudio stream and queues them up on the Asterisk channel. Frames of any size can be written to a portaudio stream, but the portaudio documentation does say that for high performance applications, the data should be written to Pa_WriteStream in the same size as what is used to initialize the stream.

Definition at line 96 of file chan_console.c.

OUTPUT_CHANNELS

#define OUTPUT_CHANNELS   1

Mono Output.

Definition at line 102 of file chan_console.c.

SAMPLE_RATE

#define SAMPLE_RATE   16000

The sample rate to request from PortAudio.

Todo:

Make this optional. If this is only going to talk to 8 kHz endpoints, then it makes sense to use 8 kHz natively.

Definition at line 84 of file chan_console.c.

TEXT_SIZE

#define TEXT_SIZE   256

Maximum text message length.

Note

This should be changed if there is a common definition somewhere that defines the maximum length of a text message.

Definition at line 109 of file chan_console.c.

V_BEGIN

#define V_BEGIN   " --- <(\"<) --- "

Dance, Kirby, Dance!

Definition at line 112 of file chan_console.c.

V_END

#define V_END   " --- (>\")> ---\n"

Definition at line 113 of file chan_console.c.

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 1592 of file chan_console.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 1592 of file chan_console.c.

ast_ext_ctx()

static char * ast_ext_ctx ( struct console_pvt *  pvt, const char *  src, char **  ext, char **  ctx  )

static

split a string in extension-context, returns pointers to malloc'ed strings. If we do not have 'overridecontext' then the last @ is considered as a context separator, and the context is overridden. This is usually not very necessary as you can play with the dialplan, and it is nice not to need it because you have '@' in SIP addresses. Return value is the buffer address.

Note

came from chan_oss

Definition at line 682 of file chan_console.c.

{
    if (ext == NULL || ctx == NULL)
        return NULL;            /* error */
 
    *ext = *ctx = NULL;
 
    if (src && *src != '\0')
        *ext = ast_strdup(src);
 
    if (*ext == NULL)
        return NULL;
 
    if (!pvt->overridecontext) {
        /* parse from the right */
        *ctx = strrchr(*ext, '@');
        if (*ctx)
            *(*ctx)++ = '\0';
    }
 
    return *ext;
}

References ast_strdup, ext, NULL, and console_pvt::overridecontext.

Referenced by cli_console_dial().

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 1592 of file chan_console.c.

build_device()

static void build_device ( struct ast_config *  cfg, const char *  name  )

static

Definition at line 1370 of file chan_console.c.

{
    struct ast_variable *v;
    struct console_pvt *pvt;
    int new = 0;
 
    if ((pvt = find_pvt(name))) {
        console_pvt_lock(pvt);
        set_pvt_defaults(pvt);
        pvt->destroy = 0;
    } else {
        if (!(pvt = ao2_alloc(sizeof(*pvt), pvt_destructor)))
            return;
        init_pvt(pvt, name);
        set_pvt_defaults(pvt);
        new = 1;
    }
 
    for (v = ast_variable_browse(cfg, name); v; v = v->next)
        store_config_core(pvt, v->name, v->value);
 
    if (new)
        ao2_link(pvts, pvt);
    else
        console_pvt_unlock(pvt);
 
    unref_pvt(pvt);
}

References ao2_alloc, ao2_link, ast_variable_browse(), console_pvt_lock, console_pvt_unlock, console_pvt::destroy, find_pvt(), init_pvt(), name, ast_variable::name, ast_variable::next, pvt_destructor(), pvts, set_pvt_defaults(), store_config_core(), unref_pvt(), and ast_variable::value.

Referenced by load_config().

cli_console_active()

static char * cli_console_active ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 1193 of file chan_console.c.

{
    struct console_pvt *pvt;
 
    switch (cmd) {
    case CLI_INIT:
        e->command = "console {set|show} active";
        e->usage =
            "Usage: console {set|show} active [<device>]\n"
            "       Set or show the active console device for the Asterisk CLI.\n";
        return NULL;
    case CLI_GENERATE:
        if (a->pos == e->args) {
            struct ao2_iterator i;
            int x = 0;
            char *res = NULL;
            i = ao2_iterator_init(pvts, 0);
            while ((pvt = ao2_iterator_next(&i))) {
                if (++x > a->n && !strncasecmp(pvt->name, a->word, strlen(a->word)))
                    res = ast_strdup(pvt->name);
                unref_pvt(pvt);
                if (res) {
                    ao2_iterator_destroy(&i);
                    return res;
                }
            }
            ao2_iterator_destroy(&i);
        }
        return NULL;
    }
 
    if (a->argc < e->args)
        return CLI_SHOWUSAGE;
 
    if (a->argc == 3) {
        pvt = get_active_pvt();
 
        if (!pvt)
            ast_cli(a->fd, "No device is currently set as the active console device.\n");
        else {
            console_pvt_lock(pvt);
            ast_cli(a->fd, "The active console device is '%s'.\n", pvt->name);
            console_pvt_unlock(pvt);
            pvt = unref_pvt(pvt);
        }
 
        return CLI_SUCCESS;
    }
 
    if (!(pvt = find_pvt(a->argv[e->args]))) {
        ast_cli(a->fd, "Could not find a device called '%s'.\n", a->argv[e->args]);
        return CLI_FAILURE;
    }
 
    set_active(pvt, "yes");
 
    console_pvt_lock(pvt);
    ast_cli(a->fd, "The active console device has been set to '%s'\n", pvt->name);
    console_pvt_unlock(pvt);
 
    unref_pvt(pvt);
 
    return CLI_SUCCESS;
}

References a, ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next, ast_cli_entry::args, ast_cli(), ast_strdup, CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, console_pvt_lock, console_pvt_unlock, find_pvt(), get_active_pvt(), console_pvt::name, NULL, pvts, set_active(), unref_pvt(), and ast_cli_entry::usage.

cli_console_answer()

static char * cli_console_answer ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

answer command from the console

Definition at line 1071 of file chan_console.c.

{
    struct console_pvt *pvt;
 
    switch (cmd) {
    case CLI_INIT:
        e->command = "console answer";
        e->usage =
            "Usage: console answer\n"
            "       Answers an incoming call on the console channel.\n";
        return NULL;
 
    case CLI_GENERATE:
        return NULL;    /* no completion */
    }
 
    pvt = get_active_pvt();
    if (!pvt) {
        ast_cli(a->fd, "No console device is set as active\n");
        return CLI_FAILURE;
    }
 
    if (a->argc != e->args) {
        unref_pvt(pvt);
        return CLI_SHOWUSAGE;
    }
 
    if (!pvt->owner) {
        ast_cli(a->fd, "No one is calling us\n");
        unref_pvt(pvt);
        return CLI_FAILURE;
    }
 
    pvt->hookstate = 1;
 
    ast_indicate(pvt->owner, -1);
 
    ast_queue_control(pvt->owner, AST_CONTROL_ANSWER);
 
    unref_pvt(pvt);
 
    return CLI_SUCCESS;
}

References a, ast_cli_entry::args, ast_cli(), AST_CONTROL_ANSWER, ast_indicate(), ast_queue_control(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, get_active_pvt(), console_pvt::hookstate, NULL, console_pvt::owner, unref_pvt(), and ast_cli_entry::usage.

cli_console_autoanswer()

static char * cli_console_autoanswer ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 716 of file chan_console.c.

{
    struct console_pvt *pvt;
    char *res = CLI_SUCCESS;
 
    switch (cmd) {
    case CLI_INIT:
        e->command = "console {set|show} autoanswer [on|off]";
        e->usage =
            "Usage: console {set|show} autoanswer [on|off]\n"
            "       Enables or disables autoanswer feature.  If used without\n"
            "       argument, displays the current on/off status of autoanswer.\n"
            "       The default value of autoanswer is in 'oss.conf'.\n";
        return NULL;
 
    case CLI_GENERATE:
        return NULL;
    }
 
    pvt = get_active_pvt();
    if (!pvt) {
        ast_cli(a->fd, "No console device is set as active.\n");
        return CLI_FAILURE;
    }
 
    if (a->argc == e->args - 1) {
        ast_cli(a->fd, "Auto answer is %s.\n", pvt->autoanswer ? "on" : "off");
        unref_pvt(pvt);
        return CLI_SUCCESS;
    }
 
    if (a->argc != e->args) {
        unref_pvt(pvt);
        return CLI_SHOWUSAGE;
    }
 
    if (!strcasecmp(a->argv[e->args-1], "on"))
        pvt->autoanswer = 1;
    else if (!strcasecmp(a->argv[e->args - 1], "off"))
        pvt->autoanswer = 0;
    else
        res = CLI_SHOWUSAGE;
 
    unref_pvt(pvt);
 
    return res;
}

References a, ast_cli_entry::args, ast_cli(), console_pvt::autoanswer, CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, get_active_pvt(), NULL, unref_pvt(), and ast_cli_entry::usage.

cli_console_dial()

static char * cli_console_dial ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 804 of file chan_console.c.

{
    char *s = NULL;
    const char *mye = NULL, *myc = NULL;
    struct console_pvt *pvt;
 
    if (cmd == CLI_INIT) {
        e->command = "console dial";
        e->usage =
            "Usage: console dial [extension[@context]]\n"
            "       Dials a given extension (and context if specified)\n";
        return NULL;
    } else if (cmd == CLI_GENERATE) {
        return NULL;
    }
 
    if (a->argc > e->args + 1) {
        return CLI_SHOWUSAGE;
    }
 
    pvt = get_active_pvt();
    if (!pvt) {
        ast_cli(a->fd, "No console device is currently set as active\n");
        return CLI_FAILURE;
    }
 
    if (pvt->owner) {   /* already in a call */
        int i;
        struct ast_frame f = { AST_FRAME_DTMF };
        const char *s;
 
        if (a->argc == e->args) {   /* argument is mandatory here */
            ast_cli(a->fd, "Already in a call. You can only dial digits until you hangup.\n");
            unref_pvt(pvt);
            return CLI_FAILURE;
        }
        s = a->argv[e->args];
        /* send the string one char at a time */
        for (i = 0; i < strlen(s); i++) {
            f.subclass.integer = s[i];
            ast_queue_frame(pvt->owner, &f);
        }
        unref_pvt(pvt);
        return CLI_SUCCESS;
    }
 
    /* if we have an argument split it into extension and context */
    if (a->argc == e->args + 1) {
        char *ext = NULL, *con = NULL;
        s = ast_ext_ctx(pvt, a->argv[e->args], &ext, &con);
        mye = ext;
        myc = con;
        ast_debug(1, "provided '%s', exten '%s' context '%s'\n",
            a->argv[e->args], mye, myc);
    }
 
    /* supply default values if needed */
    if (ast_strlen_zero(mye))
        mye = pvt->exten;
    if (ast_strlen_zero(myc))
        myc = pvt->context;
 
    if (ast_exists_extension(NULL, myc, mye, 1, NULL)) {
        console_pvt_lock(pvt);
        pvt->hookstate = 1;
        console_new(pvt, mye, myc, AST_STATE_RINGING, NULL, NULL);
        console_pvt_unlock(pvt);
    } else
        ast_cli(a->fd, "No such extension '%s' in context '%s'\n", mye, myc);
 
    ast_free(s);
 
    unref_pvt(pvt);
 
    return CLI_SUCCESS;
}

References a, ast_cli_entry::args, ast_cli(), ast_debug, ast_exists_extension(), ast_ext_ctx(), AST_FRAME_DTMF, ast_free, ast_queue_frame(), AST_STATE_RINGING, ast_strlen_zero(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, console_new(), console_pvt_lock, console_pvt_unlock, console_pvt::context, ext, console_pvt::exten, get_active_pvt(), console_pvt::hookstate, ast_frame_subclass::integer, NULL, console_pvt::owner, ast_frame::subclass, unref_pvt(), and ast_cli_entry::usage.

cli_console_flash()

static char * cli_console_flash ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 765 of file chan_console.c.

{
    struct console_pvt *pvt;
 
    if (cmd == CLI_INIT) {
        e->command = "console flash";
        e->usage =
            "Usage: console flash\n"
            "       Flashes the call currently placed on the console.\n";
        return NULL;
    } else if (cmd == CLI_GENERATE) {
        return NULL;
    }
 
    if (a->argc != e->args) {
        return CLI_SHOWUSAGE;
    }
 
    pvt = get_active_pvt();
    if (!pvt) {
        ast_cli(a->fd, "No console device is set as active\n");
        return CLI_FAILURE;
    }
 
    if (!pvt->owner) {
        ast_cli(a->fd, "No call to flash\n");
        unref_pvt(pvt);
        return CLI_FAILURE;
    }
 
    pvt->hookstate = 0;
 
    ast_queue_control(pvt->owner, AST_CONTROL_FLASH);
 
    unref_pvt(pvt);
 
    return CLI_SUCCESS;
}

References a, ast_cli_entry::args, ast_cli(), AST_CONTROL_FLASH, ast_queue_control(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, get_active_pvt(), console_pvt::hookstate, NULL, console_pvt::owner, unref_pvt(), and ast_cli_entry::usage.

cli_console_hangup()

static char * cli_console_hangup ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 881 of file chan_console.c.

{
    struct console_pvt *pvt;
 
    if (cmd == CLI_INIT) {
        e->command = "console hangup";
        e->usage =
            "Usage: console hangup\n"
            "       Hangs up any call currently placed on the console.\n";
        return NULL;
    } else if (cmd == CLI_GENERATE) {
        return NULL;
    }
 
    if (a->argc != e->args) {
        return CLI_SHOWUSAGE;
    }
 
    pvt = get_active_pvt();
    if (!pvt) {
        ast_cli(a->fd, "No console device is set as active\n");
        return CLI_FAILURE;
    }
 
    if (!pvt->owner && !pvt->hookstate) {
        ast_cli(a->fd, "No call to hang up\n");
        unref_pvt(pvt);
        return CLI_FAILURE;
    }
 
    pvt->hookstate = 0;
    if (pvt->owner)
        ast_queue_hangup(pvt->owner);
 
    unref_pvt(pvt);
 
    return CLI_SUCCESS;
}

References a, ast_cli_entry::args, ast_cli(), ast_queue_hangup(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, get_active_pvt(), console_pvt::hookstate, NULL, console_pvt::owner, unref_pvt(), and ast_cli_entry::usage.

cli_console_mute()

static char * cli_console_mute ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 920 of file chan_console.c.

{
    const char *s;
    struct console_pvt *pvt;
    char *res = CLI_SUCCESS;
 
    if (cmd == CLI_INIT) {
        e->command = "console {mute|unmute}";
        e->usage =
            "Usage: console {mute|unmute}\n"
            "       Mute/unmute the microphone.\n";
        return NULL;
    } else if (cmd == CLI_GENERATE) {
        return NULL;
    }
 
    if (a->argc != e->args) {
        return CLI_SHOWUSAGE;
    }
 
    pvt = get_active_pvt();
    if (!pvt) {
        ast_cli(a->fd, "No console device is set as active\n");
        return CLI_FAILURE;
    }
 
    s = a->argv[e->args-1];
    if (!strcasecmp(s, "mute"))
        pvt->muted = 1;
    else if (!strcasecmp(s, "unmute"))
        pvt->muted = 0;
    else
        res = CLI_SHOWUSAGE;
 
    ast_verb(1, V_BEGIN "The Console is now %s" V_END,
        pvt->muted ? "Muted" : "Unmuted");
 
    unref_pvt(pvt);
 
    return res;
}

References a, ast_cli_entry::args, ast_cli(), ast_verb, CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, get_active_pvt(), console_pvt::muted, NULL, unref_pvt(), ast_cli_entry::usage, V_BEGIN, and V_END.

cli_console_sendtext()

static char * cli_console_sendtext ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Console send text CLI command.

Note

concatenate all arguments into a single string. argv is NULL-terminated so we can use it right away

Definition at line 1121 of file chan_console.c.

{
    char buf[TEXT_SIZE];
    struct console_pvt *pvt;
    struct ast_frame f = {
        .frametype = AST_FRAME_TEXT,
        .data.ptr = buf,
        .src = "console_send_text",
    };
    int len;
 
    if (cmd == CLI_INIT) {
        e->command = "console send text";
        e->usage =
            "Usage: console send text <message>\n"
            "       Sends a text message for display on the remote terminal.\n";
        return NULL;
    } else if (cmd == CLI_GENERATE) {
        return NULL;
    }
 
    pvt = get_active_pvt();
    if (!pvt) {
        ast_cli(a->fd, "No console device is set as active\n");
        return CLI_FAILURE;
    }
 
    if (a->argc < e->args + 1) {
        unref_pvt(pvt);
        return CLI_SHOWUSAGE;
    }
 
    if (!pvt->owner) {
        ast_cli(a->fd, "Not in a call\n");
        unref_pvt(pvt);
        return CLI_FAILURE;
    }
 
    ast_join(buf, sizeof(buf) - 1, a->argv + e->args);
    if (ast_strlen_zero(buf)) {
        unref_pvt(pvt);
        return CLI_SHOWUSAGE;
    }
 
    len = strlen(buf);
    buf[len] = '\n';
    f.datalen = len + 1;
 
    ast_queue_frame(pvt->owner, &f);
 
    unref_pvt(pvt);
 
    return CLI_SUCCESS;
}

References a, ast_cli_entry::args, ast_cli(), AST_FRAME_TEXT, ast_join, ast_queue_frame(), ast_strlen_zero(), buf, CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_frame::datalen, ast_frame::frametype, get_active_pvt(), len(), NULL, console_pvt::owner, TEXT_SIZE, unref_pvt(), and ast_cli_entry::usage.

cli_list_available()

static char * cli_list_available ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 962 of file chan_console.c.

{
    PaDeviceIndex idx, num, def_input, def_output;
 
    if (cmd == CLI_INIT) {
        e->command = "console list available";
        e->usage =
            "Usage: console list available\n"
            "       List all available devices.\n";
        return NULL;
    } else if (cmd == CLI_GENERATE)
        return NULL;
 
    if (a->argc != e->args)
        return CLI_SHOWUSAGE;
 
    ast_cli(a->fd, "\n"
                "=============================================================\n"
                "=== Available Devices =======================================\n"
                "=============================================================\n"
                "===\n");
 
    num = Pa_GetDeviceCount();
    if (!num) {
        ast_cli(a->fd, "(None)\n");
        return CLI_SUCCESS;
    }
 
    def_input = Pa_GetDefaultInputDevice();
    def_output = Pa_GetDefaultOutputDevice();
    for (idx = 0; idx < num; idx++) {
        const PaDeviceInfo *dev = Pa_GetDeviceInfo(idx);
        if (!dev)
            continue;
        ast_cli(a->fd, "=== ---------------------------------------------------------\n"
                       "=== Device Name: %s\n", dev->name);
        if (dev->maxInputChannels)
            ast_cli(a->fd, "=== ---> %sInput Device\n", (idx == def_input) ? "Default " : "");
        if (dev->maxOutputChannels)
            ast_cli(a->fd, "=== ---> %sOutput Device\n", (idx == def_output) ? "Default " : "");
        ast_cli(a->fd, "=== ---------------------------------------------------------\n===\n");
    }
 
    ast_cli(a->fd, "=============================================================\n\n");
 
    return CLI_SUCCESS;
}

References a, ast_cli_entry::args, ast_cli(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, test_val::name, NULL, and ast_cli_entry::usage.

cli_list_devices()

static char * cli_list_devices ( struct ast_cli_entry *  e, int  cmd, struct ast_cli_args *  a  )

static

Definition at line 1010 of file chan_console.c.

{
    struct ao2_iterator i;
    struct console_pvt *pvt;
 
    if (cmd == CLI_INIT) {
        e->command = "console list devices";
        e->usage =
            "Usage: console list devices\n"
            "       List all configured devices.\n";
        return NULL;
    } else if (cmd == CLI_GENERATE)
        return NULL;
 
    if (a->argc != e->args)
        return CLI_SHOWUSAGE;
 
    ast_cli(a->fd, "\n"
                "=============================================================\n"
                "=== Configured Devices ======================================\n"
                "=============================================================\n"
                "===\n");
 
    i = ao2_iterator_init(pvts, 0);
    while ((pvt = ao2_iterator_next(&i))) {
        console_pvt_lock(pvt);
 
        ast_cli(a->fd, "=== ---------------------------------------------------------\n"
                       "=== Device Name: %s\n"
                       "=== ---> Active:           %s\n"
                       "=== ---> Input Device:     %s\n"
                       "=== ---> Output Device:    %s\n"
                       "=== ---> Context:          %s\n"
                       "=== ---> Extension:        %s\n"
                       "=== ---> CallerID Num:     %s\n"
                       "=== ---> CallerID Name:    %s\n"
                       "=== ---> MOH Interpret:    %s\n"
                       "=== ---> Language:         %s\n"
                       "=== ---> Parkinglot:       %s\n"
                       "=== ---> Muted:            %s\n"
                       "=== ---> Auto-Answer:      %s\n"
                       "=== ---> Override Context: %s\n"
                       "=== ---------------------------------------------------------\n===\n",
            pvt->name, (pvt == active_pvt) ? "Yes" : "No",
            pvt->input_device, pvt->output_device, pvt->context,
            pvt->exten, pvt->cid_num, pvt->cid_name, pvt->mohinterpret,
            pvt->language, pvt->parkinglot, pvt->muted ? "Yes" : "No", pvt->autoanswer ? "Yes" : "No",
            pvt->overridecontext ? "Yes" : "No");
 
        console_pvt_unlock(pvt);
        unref_pvt(pvt);
    }
    ao2_iterator_destroy(&i);
 
    ast_cli(a->fd, "=============================================================\n\n");
 
    return CLI_SUCCESS;
}

References a, active_pvt, ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next, ast_cli_entry::args, ast_cli(), console_pvt::autoanswer, console_pvt::cid_name, console_pvt::cid_num, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, console_pvt_lock, console_pvt_unlock, console_pvt::context, console_pvt::exten, console_pvt::input_device, console_pvt::language, console_pvt::mohinterpret, console_pvt::muted, console_pvt::name, NULL, console_pvt::output_device, console_pvt::overridecontext, console_pvt::parkinglot, pvts, unref_pvt(), and ast_cli_entry::usage.

console_answer()

static int console_answer ( struct ast_channel *  c )

static

Definition at line 546 of file chan_console.c.

{
    struct console_pvt *pvt = ast_channel_tech_pvt(c);
 
    ast_verb(1, V_BEGIN "Call from Console has been Answered" V_END);
 
    ast_setstate(c, AST_STATE_UP);
 
    return start_stream(pvt);
}

References ast_channel_tech_pvt(), ast_setstate(), AST_STATE_UP, ast_verb, c, start_stream(), V_BEGIN, and V_END.

console_call()

static int console_call ( struct ast_channel *  c, const char *  dest, int  timeout  )

static

Definition at line 584 of file chan_console.c.

{
    struct console_pvt *pvt = ast_channel_tech_pvt(c);
    enum ast_control_frame_type ctrl;
 
    ast_verb(1, V_BEGIN "Call to device '%s' on console from '%s' <%s>" V_END,
        dest,
        S_COR(ast_channel_caller(c)->id.name.valid, ast_channel_caller(c)->id.name.str, ""),
        S_COR(ast_channel_caller(c)->id.number.valid, ast_channel_caller(c)->id.number.str, ""));
 
    console_pvt_lock(pvt);
 
    if (pvt->autoanswer) {
        pvt->hookstate = 1;
        console_pvt_unlock(pvt);
        ast_verb(1, V_BEGIN "Auto-answered" V_END);
        ctrl = AST_CONTROL_ANSWER;
    } else {
        console_pvt_unlock(pvt);
        ast_verb(1, V_BEGIN "Type 'console answer' to answer, or use the 'autoanswer' option "
                "for future calls" V_END);
        ctrl = AST_CONTROL_RINGING;
        ast_indicate(c, AST_CONTROL_RINGING);
    }
 
    ast_queue_control(c, ctrl);
 
    return start_stream(pvt);
}

References ast_channel_caller(), ast_channel_tech_pvt(), AST_CONTROL_ANSWER, AST_CONTROL_RINGING, ast_indicate(), ast_queue_control(), ast_verb, console_pvt::autoanswer, c, console_pvt_lock, console_pvt_unlock, console_pvt::hookstate, name, S_COR, start_stream(), V_BEGIN, and V_END.

console_digit_begin()

static int console_digit_begin ( struct ast_channel *  c, char  digit  )

static

Definition at line 509 of file chan_console.c.

{
    ast_verb(1, V_BEGIN "Console Received Beginning of Digit %c" V_END, digit);
 
    return -1; /* non-zero to request inband audio */
}

References ast_verb, digit, V_BEGIN, and V_END.

console_digit_end()

static int console_digit_end ( struct ast_channel *  c, char  digit, unsigned int  duration  )

static

Definition at line 516 of file chan_console.c.

{
    ast_verb(1, V_BEGIN "Console Received End of Digit %c (duration %u)" V_END,
        digit, duration);
 
    return -1; /* non-zero to request inband audio */
}

References ast_verb, digit, V_BEGIN, and V_END.

console_fixup()

static int console_fixup ( struct ast_channel *  oldchan, struct ast_channel *  newchan  )

static

Definition at line 662 of file chan_console.c.

{
    struct console_pvt *pvt = ast_channel_tech_pvt(newchan);
 
    pvt->owner = newchan;
 
    return 0;
}

References ast_channel_tech_pvt(), and console_pvt::owner.

console_hangup()

static int console_hangup ( struct ast_channel *  c )

static

Definition at line 531 of file chan_console.c.

{
    struct console_pvt *pvt = ast_channel_tech_pvt(c);
 
    ast_verb(1, V_BEGIN "Hangup on Console" V_END);
 
    pvt->hookstate = 0;
    pvt->owner = NULL;
    stop_stream(pvt);
 
    ast_channel_tech_pvt_set(c, unref_pvt(pvt));
 
    return 0;
}

References ast_channel_tech_pvt(), ast_channel_tech_pvt_set(), ast_verb, c, console_pvt::hookstate, NULL, console_pvt::owner, stop_stream(), unref_pvt(), V_BEGIN, and V_END.

console_indicate()

static int console_indicate ( struct ast_channel *  chan, int  cond, const void *  data, size_t  datalen  )

static

Definition at line 625 of file chan_console.c.

{
    struct console_pvt *pvt = ast_channel_tech_pvt(chan);
    int res = 0;
 
    switch (cond) {
    case AST_CONTROL_BUSY:
    case AST_CONTROL_CONGESTION:
    case AST_CONTROL_RINGING:
    case AST_CONTROL_INCOMPLETE:
    case AST_CONTROL_PVT_CAUSE_CODE:
    case -1:
        res = -1;  /* Ask for inband indications */
        break;
    case AST_CONTROL_PROGRESS:
    case AST_CONTROL_PROCEEDING:
    case AST_CONTROL_VIDUPDATE:
    case AST_CONTROL_SRCUPDATE:
        break;
    case AST_CONTROL_HOLD:
        ast_verb(1, V_BEGIN "Console Has Been Placed on Hold" V_END);
        ast_moh_start(chan, data, pvt->mohinterpret);
        break;
    case AST_CONTROL_UNHOLD:
        ast_verb(1, V_BEGIN "Console Has Been Retrieved from Hold" V_END);
        ast_moh_stop(chan);
        break;
    default:
        ast_log(LOG_WARNING, "Don't know how to display condition %d on %s\n",
            cond, ast_channel_name(chan));
        /* The core will play inband indications for us if appropriate */
        res = -1;
    }
 
    return res;
}

References ast_channel_name(), ast_channel_tech_pvt(), AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HOLD, AST_CONTROL_INCOMPLETE, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_PVT_CAUSE_CODE, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, ast_log, ast_moh_start(), ast_moh_stop(), ast_verb, cond, LOG_WARNING, console_pvt::mohinterpret, V_BEGIN, and V_END.

console_new()

static struct ast_channel * console_new ( struct console_pvt *  pvt, const char *  ext, const char *  ctx, int  state, const struct ast_assigned_ids *  assignedids, const struct ast_channel *  requestor  )

static

Note

Called with the pvt struct locked

Definition at line 425 of file chan_console.c.

{
    struct ast_format_cap *caps;
    struct ast_channel *chan;
 
    caps = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
    if (!caps) {
        return NULL;
    }
 
    if (!(chan = ast_channel_alloc(1, state, pvt->cid_num, pvt->cid_name, NULL,
        ext, ctx, assignedids, requestor, 0, "Console/%s", pvt->name))) {
        ao2_ref(caps, -1);
        return NULL;
    }
 
    ast_channel_stage_snapshot(chan);
 
    ast_channel_tech_set(chan, &console_tech);
    ast_channel_set_readformat(chan, ast_format_slin16);
    ast_channel_set_writeformat(chan, ast_format_slin16);
    ast_format_cap_append(caps, ast_format_slin16, 0);
    ast_channel_nativeformats_set(chan, caps);
    ao2_ref(caps, -1);
    ast_channel_tech_pvt_set(chan, ref_pvt(pvt));
 
    pvt->owner = chan;
 
    if (!ast_strlen_zero(pvt->language))
        ast_channel_language_set(chan, pvt->language);
 
    ast_jb_configure(chan, &global_jbconf);
 
    ast_channel_stage_snapshot_done(chan);
    ast_channel_unlock(chan);
 
    if (state != AST_STATE_DOWN) {
        if (ast_pbx_start(chan)) {
            ast_channel_hangupcause_set(chan, AST_CAUSE_SWITCH_CONGESTION);
            ast_hangup(chan);
            chan = NULL;
        } else
            start_stream(pvt);
    }
 
    return chan;
}

References ao2_ref, AST_CAUSE_SWITCH_CONGESTION, ast_channel_alloc, ast_channel_hangupcause_set(), ast_channel_nativeformats_set(), ast_channel_set_readformat(), ast_channel_set_writeformat(), ast_channel_stage_snapshot(), ast_channel_stage_snapshot_done(), ast_channel_tech_pvt_set(), ast_channel_tech_set(), ast_channel_unlock, ast_format_cap_alloc, ast_format_cap_append, AST_FORMAT_CAP_FLAG_DEFAULT, ast_format_slin16, ast_hangup(), ast_jb_configure(), ast_pbx_start(), AST_STATE_DOWN, ast_strlen_zero(), console_pvt::cid_name, console_pvt::cid_num, console_tech, ext, global_jbconf, console_pvt::language, console_pvt::name, NULL, console_pvt::owner, ref_pvt(), and start_stream().

Referenced by cli_console_dial(), and console_request().

console_read()

static struct ast_frame * console_read ( struct ast_channel *  chan )

static

Implementation of the ast_channel_tech read() callback.

Calling this function is harmless. However, if it does get called, it is an indication that something weird happened that really shouldn't have and is worth looking into.

Why should this function not get called? Well, let me explain. There are a couple of ways to pass on audio that has come from this channel. The way that this channel driver uses is that once the audio is available, it is wrapped in an ast_frame and queued onto the channel using ast_queue_frame().

The other method would be signalling to the core that there is audio waiting, and that it needs to call the channel's read() callback to get it. The way the channel gets signalled is that one or more file descriptors are placed in the fds array on the ast_channel which the core will poll() on. When the fd indicates that input is available, the read() callback is called. This is especially useful when there is a dedicated file descriptor where the audio is read from. An example would be the socket for an RTP stream.

Definition at line 577 of file chan_console.c.

{
    ast_debug(1, "I should not be called ...\n");
 
    return &ast_null_frame;
}

References ast_debug, and ast_null_frame.

console_request()

static struct ast_channel * console_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

Channel Technology Callbacks

Definition at line 473 of file chan_console.c.

{
    struct ast_channel *chan = NULL;
    struct console_pvt *pvt;
 
    if (!(pvt = find_pvt(data))) {
        ast_log(LOG_ERROR, "Console device '%s' not found\n", data);
        return NULL;
    }
 
    if (!(ast_format_cap_iscompatible(cap, console_tech.capabilities))) {
        struct ast_str *cap_buf = ast_str_alloca(AST_FORMAT_CAP_NAMES_LEN);
        ast_log(LOG_NOTICE, "Channel requested with unsupported format(s): '%s'\n",
            ast_format_cap_get_names(cap, &cap_buf));
        goto return_unref;
    }
 
    if (pvt->owner) {
        ast_log(LOG_NOTICE, "Console channel already active!\n");
        *cause = AST_CAUSE_BUSY;
        goto return_unref;
    }
 
    console_pvt_lock(pvt);
    chan = console_new(pvt, NULL, NULL, AST_STATE_DOWN, assignedids, requestor);
    console_pvt_unlock(pvt);
 
    if (!chan)
        ast_log(LOG_WARNING, "Unable to create new Console channel!\n");
 
return_unref:
    unref_pvt(pvt);
 
    return chan;
}

References AST_CAUSE_BUSY, ast_format_cap_get_names(), ast_format_cap_iscompatible(), AST_FORMAT_CAP_NAMES_LEN, ast_log, AST_STATE_DOWN, ast_str_alloca, ast_channel_tech::capabilities, console_new(), console_pvt_lock, console_pvt_unlock, console_tech, find_pvt(), LOG_ERROR, LOG_NOTICE, LOG_WARNING, NULL, console_pvt::owner, and unref_pvt().

console_text()

static int console_text ( struct ast_channel *  c, const char *  text  )

static

Definition at line 524 of file chan_console.c.

{
    ast_verb(1, V_BEGIN "Console Received Text '%s'" V_END, text);
 
    return 0;
}

References ast_verb, text, V_BEGIN, and V_END.

console_write()

static int console_write ( struct ast_channel *  chan, struct ast_frame *  f  )

static

Definition at line 614 of file chan_console.c.

{
    struct console_pvt *pvt = ast_channel_tech_pvt(chan);
 
    console_pvt_lock(pvt);
    Pa_WriteStream(pvt->stream, f->data.ptr, f->samples);
    console_pvt_unlock(pvt);
 
    return 0;
}

References ast_channel_tech_pvt(), console_pvt_lock, console_pvt_unlock, ast_frame::data, ast_frame::ptr, ast_frame::samples, and console_pvt::stream.

destroy_pvts()

static void destroy_pvts ( void  )

static

Definition at line 1406 of file chan_console.c.

{
    struct ao2_iterator i;
    struct console_pvt *pvt;
 
    i = ao2_iterator_init(pvts, 0);
    while ((pvt = ao2_iterator_next(&i))) {
        if (pvt->destroy) {
            ao2_unlink(pvts, pvt);
            ast_rwlock_wrlock(&active_lock);
            if (active_pvt == pvt)
                active_pvt = unref_pvt(pvt);
            ast_rwlock_unlock(&active_lock);
        }
        unref_pvt(pvt);
    }
    ao2_iterator_destroy(&i);
}

References active_lock, active_pvt, ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next, ao2_unlink, ast_rwlock_unlock, ast_rwlock_wrlock, console_pvt::destroy, pvts, and unref_pvt().

Referenced by load_config().

find_pvt()

static struct console_pvt * find_pvt ( const char *  name )

static

Definition at line 246 of file chan_console.c.

{
    struct console_pvt tmp_pvt = {
        .name = name,
    };
 
    return ao2_find(pvts, &tmp_pvt, OBJ_POINTER);
}

References ao2_find, name, console_pvt::name, OBJ_POINTER, and pvts.

Referenced by build_device(), cli_console_active(), and console_request().

get_active_pvt()

static struct console_pvt * get_active_pvt ( void  )

static

Definition at line 705 of file chan_console.c.

{
    struct console_pvt *pvt;
 
    ast_rwlock_rdlock(&active_lock);
    pvt = ref_pvt(active_pvt);
    ast_rwlock_unlock(&active_lock);
 
    return pvt;
}

References active_lock, active_pvt, ast_rwlock_rdlock, ast_rwlock_unlock, and ref_pvt().

Referenced by cli_console_active(), cli_console_answer(), cli_console_autoanswer(), cli_console_dial(), cli_console_flash(), cli_console_hangup(), cli_console_mute(), and cli_console_sendtext().

init_pvt()

static int init_pvt ( struct console_pvt *  pvt, const char *  name  )

static

Definition at line 1358 of file chan_console.c.

{
    pvt->thread = AST_PTHREADT_NULL;
 
    if (ast_string_field_init(pvt, 32))
        return -1;
 
    ast_string_field_set(pvt, name, S_OR(name, ""));
 
    return 0;
}

References AST_PTHREADT_NULL, ast_string_field_init, ast_string_field_set, name, S_OR, and console_pvt::thread.

Referenced by build_device(), and load_module().

load_config()

static int load_config ( int  reload )

static

Load the configuration.

Parameters

reload

if this was called due to a reload

Return values

0	success
-1	failure

Definition at line 1431 of file chan_console.c.

{
    struct ast_config *cfg;
    struct ast_variable *v;
    struct ast_flags config_flags = { 0 };
    char *context = NULL;
 
    /* default values */
    memcpy(&global_jbconf, &default_jbconf, sizeof(global_jbconf));
    ast_mutex_lock(&globals_lock);
    set_pvt_defaults(&globals);
    ast_mutex_unlock(&globals_lock);
 
    if (!(cfg = ast_config_load(config_file, config_flags))) {
        ast_log(LOG_NOTICE, "Unable to open configuration file %s!\n", config_file);
        return -1;
    } else if (cfg == CONFIG_STATUS_FILEINVALID) {
        ast_log(LOG_NOTICE, "Config file %s has an invalid format\n", config_file);
        return -1;
    }
 
    ao2_callback(pvts, OBJ_NODATA, pvt_mark_destroy_cb, NULL);
 
    ast_mutex_lock(&globals_lock);
    for (v = ast_variable_browse(cfg, "general"); v; v = v->next)
        store_config_core(&globals, v->name, v->value);
    ast_mutex_unlock(&globals_lock);
 
    while ((context = ast_category_browse(cfg, context))) {
        if (strcasecmp(context, "general"))
            build_device(cfg, context);
    }
 
    ast_config_destroy(cfg);
 
    destroy_pvts();
 
    return 0;
}

References ao2_callback, ast_category_browse(), ast_config_destroy(), ast_config_load, ast_log, ast_mutex_lock, ast_mutex_unlock, ast_variable_browse(), build_device(), config_file, CONFIG_STATUS_FILEINVALID, voicemailpwcheck::context, default_jbconf, destroy_pvts(), global_jbconf, globals, globals_lock, LOG_NOTICE, ast_variable::name, ast_variable::next, NULL, OBJ_NODATA, pvt_mark_destroy_cb(), pvts, set_pvt_defaults(), store_config_core(), and ast_variable::value.

Referenced by load_module(), and reload().

load_module()

static int load_module ( void  )

static

Load the module.

Module loading including tests for configuration or dependencies. This function can return AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_DECLINE, or AST_MODULE_LOAD_SUCCESS. If a dependency or environment variable fails tests return AST_MODULE_LOAD_FAILURE. If the module can not load the configuration file or other non-critical problem return AST_MODULE_LOAD_DECLINE. On success return AST_MODULE_LOAD_SUCCESS.

Definition at line 1528 of file chan_console.c.

{
    PaError res;
 
    if (!(console_tech.capabilities = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT))) {
        return AST_MODULE_LOAD_DECLINE;
    }
    ast_format_cap_append(console_tech.capabilities, ast_format_slin16, 0);
 
    init_pvt(&globals, NULL);
 
    pvts = ao2_container_alloc_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0, NUM_PVT_BUCKETS,
        pvt_hash_cb, NULL, pvt_cmp_cb);
    if (!pvts)
        goto return_error;
 
    if (load_config(0))
        goto return_error;
 
    res = Pa_Initialize();
    if (res != paNoError) {
        ast_log(LOG_WARNING, "Failed to initialize audio system - (%d) %s\n",
            res, Pa_GetErrorText(res));
        goto return_error_pa_init;
    }
 
    if (ast_channel_register(&console_tech)) {
        ast_log(LOG_ERROR, "Unable to register channel type 'Console'\n");
        goto return_error_chan_reg;
    }
 
    if (ast_cli_register_multiple(cli_console, ARRAY_LEN(cli_console)))
        goto return_error_cli_reg;
 
    return AST_MODULE_LOAD_SUCCESS;
 
return_error_cli_reg:
    ast_cli_unregister_multiple(cli_console, ARRAY_LEN(cli_console));
return_error_chan_reg:
    ast_channel_unregister(&console_tech);
return_error_pa_init:
    Pa_Terminate();
return_error:
    if (pvts)
        ao2_ref(pvts, -1);
    pvts = NULL;
    ao2_ref(console_tech.capabilities, -1);
    console_tech.capabilities = NULL;
    pvt_destructor(&globals);
 
    return AST_MODULE_LOAD_DECLINE;
}

References AO2_ALLOC_OPT_LOCK_MUTEX, ao2_container_alloc_hash, ao2_ref, ARRAY_LEN, ast_channel_register(), ast_channel_unregister(), ast_cli_register_multiple, ast_cli_unregister_multiple(), ast_format_cap_alloc, ast_format_cap_append, AST_FORMAT_CAP_FLAG_DEFAULT, ast_format_slin16, ast_log, AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, ast_channel_tech::capabilities, cli_console, console_tech, globals, init_pvt(), load_config(), LOG_ERROR, LOG_WARNING, NULL, NUM_PVT_BUCKETS, pvt_cmp_cb(), pvt_destructor(), pvt_hash_cb(), and pvts.

open_stream()

static int open_stream ( struct console_pvt *  pvt )

static

Definition at line 298 of file chan_console.c.

{
    int res = paInternalError;
 
    if (!strcasecmp(pvt->input_device, "default") &&
        !strcasecmp(pvt->output_device, "default")) {
        res = Pa_OpenDefaultStream(&pvt->stream, INPUT_CHANNELS, OUTPUT_CHANNELS,
            paInt16, SAMPLE_RATE, NUM_SAMPLES, NULL, NULL);
    } else {
        PaStreamParameters input_params = {
            .channelCount = 1,
            .sampleFormat = paInt16,
            .suggestedLatency = (1.0 / 50.0), /* 20 ms */
            .device = paNoDevice,
        };
        PaStreamParameters output_params = {
            .channelCount = 1,
            .sampleFormat = paInt16,
            .suggestedLatency = (1.0 / 50.0), /* 20 ms */
            .device = paNoDevice,
        };
        PaDeviceIndex idx, num_devices, def_input, def_output;
 
        if (!(num_devices = Pa_GetDeviceCount()))
            return res;
 
        def_input = Pa_GetDefaultInputDevice();
        def_output = Pa_GetDefaultOutputDevice();
 
        for (idx = 0;
            idx < num_devices && (input_params.device == paNoDevice
                || output_params.device == paNoDevice);
            idx++)
        {
            const PaDeviceInfo *dev = Pa_GetDeviceInfo(idx);
 
            if (dev->maxInputChannels) {
                if ( (idx == def_input && !strcasecmp(pvt->input_device, "default")) ||
                    !strcasecmp(pvt->input_device, dev->name) )
                    input_params.device = idx;
            }
 
            if (dev->maxOutputChannels) {
                if ( (idx == def_output && !strcasecmp(pvt->output_device, "default")) ||
                    !strcasecmp(pvt->output_device, dev->name) )
                    output_params.device = idx;
            }
        }
 
        if (input_params.device == paNoDevice)
            ast_log(LOG_ERROR, "No input device found for console device '%s'\n", pvt->name);
        if (output_params.device == paNoDevice)
            ast_log(LOG_ERROR, "No output device found for console device '%s'\n", pvt->name);
 
        res = Pa_OpenStream(&pvt->stream, &input_params, &output_params,
            SAMPLE_RATE, NUM_SAMPLES, paNoFlag, NULL, NULL);
    }
 
    return res;
}

References ast_log, INPUT_CHANNELS, console_pvt::input_device, LOG_ERROR, console_pvt::name, NULL, NUM_SAMPLES, OUTPUT_CHANNELS, console_pvt::output_device, SAMPLE_RATE, and console_pvt::stream.

Referenced by start_stream().

pvt_cmp_cb()

static int pvt_cmp_cb ( void *  obj, void *  arg, int  flags  )

static

Definition at line 1478 of file chan_console.c.

{
    struct console_pvt *pvt = obj, *pvt2 = arg;
 
    return !strcasecmp(pvt->name, pvt2->name) ? CMP_MATCH | CMP_STOP : 0;
}

References CMP_MATCH, CMP_STOP, and console_pvt::name.

Referenced by load_module().

pvt_destructor()

static void pvt_destructor ( void *  obj )

static

Definition at line 1351 of file chan_console.c.

{
    struct console_pvt *pvt = obj;
 
    ast_string_field_free_memory(pvt);
}

References ast_string_field_free_memory.

Referenced by build_device(), load_module(), and unload_module().

pvt_hash_cb()

static int pvt_hash_cb ( const void *  obj, const int  flags  )

static

Definition at line 1471 of file chan_console.c.

{
    const struct console_pvt *pvt = obj;
 
    return ast_str_case_hash(pvt->name);
}

References ast_str_case_hash(), and console_pvt::name.

Referenced by load_module().

pvt_mark_destroy_cb()

static int pvt_mark_destroy_cb ( void *  obj, void *  arg, int  flags  )

static

Definition at line 1399 of file chan_console.c.

{
    struct console_pvt *pvt = obj;
    pvt->destroy = 1;
    return 0;
}

References console_pvt::destroy.

Referenced by load_config().

ref_pvt()

static struct console_pvt * ref_pvt ( struct console_pvt *  pvt )

inlinestatic

Definition at line 233 of file chan_console.c.

{
    if (pvt)
        ao2_ref(pvt, +1);
    return pvt;
}

References ao2_ref.

Referenced by console_new(), get_active_pvt(), and set_active().

reload()

static int reload ( void  )

static

Definition at line 1581 of file chan_console.c.

{
    return load_config(1);
}

References load_config().

set_active()

static void set_active ( struct console_pvt *  pvt, const char *  value  )

static

Definition at line 1176 of file chan_console.c.

{
    if (pvt == &globals) {
        ast_log(LOG_ERROR, "active is only valid as a per-device setting\n");
        return;
    }
 
    if (!ast_true(value))
        return;
 
    ast_rwlock_wrlock(&active_lock);
    if (active_pvt)
        unref_pvt(active_pvt);
    active_pvt = ref_pvt(pvt);
    ast_rwlock_unlock(&active_lock);
}

References active_lock, active_pvt, ast_log, ast_rwlock_unlock, ast_rwlock_wrlock, ast_true(), globals, LOG_ERROR, ref_pvt(), unref_pvt(), and value.

Referenced by cli_console_active(), and store_config_core().

set_pvt_defaults()

static void set_pvt_defaults ( struct console_pvt *  pvt )

static

Set default values for a pvt struct.

Note

This function expects the pvt lock to be held.

Definition at line 1276 of file chan_console.c.

{
    if (pvt == &globals) {
        ast_string_field_set(pvt, mohinterpret, "default");
        ast_string_field_set(pvt, context, "default");
        ast_string_field_set(pvt, exten, "s");
        ast_string_field_set(pvt, language, "");
        ast_string_field_set(pvt, cid_num, "");
        ast_string_field_set(pvt, cid_name, "");
        ast_string_field_set(pvt, parkinglot, "");
 
        pvt->overridecontext = 0;
        pvt->autoanswer = 0;
    } else {
        ast_mutex_lock(&globals_lock);
 
        ast_string_field_set(pvt, mohinterpret, globals.mohinterpret);
        ast_string_field_set(pvt, context, globals.context);
        ast_string_field_set(pvt, exten, globals.exten);
        ast_string_field_set(pvt, language, globals.language);
        ast_string_field_set(pvt, cid_num, globals.cid_num);
        ast_string_field_set(pvt, cid_name, globals.cid_name);
        ast_string_field_set(pvt, parkinglot, globals.parkinglot);
 
        pvt->overridecontext = globals.overridecontext;
        pvt->autoanswer = globals.autoanswer;
 
        ast_mutex_unlock(&globals_lock);
    }
}

References ast_mutex_lock, ast_mutex_unlock, ast_string_field_set, console_pvt::autoanswer, console_pvt::cid_name, console_pvt::cid_num, console_pvt::context, voicemailpwcheck::context, console_pvt::exten, globals, globals_lock, console_pvt::language, language, console_pvt::mohinterpret, mohinterpret, console_pvt::overridecontext, and console_pvt::parkinglot.

Referenced by build_device(), and load_config().

start_stream()

static int start_stream ( struct console_pvt *  pvt )

static

Definition at line 359 of file chan_console.c.

{
    PaError res;
    int ret_val = 0;
 
    console_pvt_lock(pvt);
 
    /* It is possible for console_hangup to be called before the
     * stream is started, if this is the case pvt->owner will be NULL
     * and start_stream should be aborted. */
    if (pvt->streamstate || !pvt->owner)
        goto return_unlock;
 
    pvt->streamstate = 1;
    ast_debug(1, "Starting stream\n");
 
    res = open_stream(pvt);
    if (res != paNoError) {
        ast_log(LOG_WARNING, "Failed to open stream - (%d) %s\n",
            res, Pa_GetErrorText(res));
        ret_val = -1;
        goto return_unlock;
    }
 
    res = Pa_StartStream(pvt->stream);
    if (res != paNoError) {
        ast_log(LOG_WARNING, "Failed to start stream - (%d) %s\n",
            res, Pa_GetErrorText(res));
        ret_val = -1;
        goto return_unlock;
    }
 
    if (ast_pthread_create_background(&pvt->thread, NULL, stream_monitor, pvt)) {
        ast_log(LOG_ERROR, "Failed to start stream monitor thread\n");
        ret_val = -1;
    }
 
return_unlock:
    console_pvt_unlock(pvt);
 
    return ret_val;
}

References ast_debug, ast_log, ast_pthread_create_background, console_pvt_lock, console_pvt_unlock, LOG_ERROR, LOG_WARNING, NULL, open_stream(), console_pvt::owner, console_pvt::stream, stream_monitor(), console_pvt::streamstate, and console_pvt::thread.

Referenced by console_answer(), console_call(), and console_new().

stop_stream()

static int stop_stream ( struct console_pvt *  pvt )

static

Definition at line 402 of file chan_console.c.

{
    if (!pvt->streamstate || pvt->thread == AST_PTHREADT_NULL)
        return 0;
 
    pvt->abort = 1;
    /* Wait for pvt->thread to exit cleanly, to avoid killing it while it's holding a lock. */
    pthread_kill(pvt->thread, SIGURG); /* Wake it up if needed, but don't cancel it */
    pthread_join(pvt->thread, NULL);
 
    console_pvt_lock(pvt);
    Pa_AbortStream(pvt->stream);
    Pa_CloseStream(pvt->stream);
    pvt->stream = NULL;
    pvt->streamstate = 0;
    console_pvt_unlock(pvt);
 
    return 0;
}

References console_pvt::abort, AST_PTHREADT_NULL, console_pvt_lock, console_pvt_unlock, NULL, console_pvt::stream, console_pvt::streamstate, and console_pvt::thread.

Referenced by console_hangup(), and stop_streams().

stop_streams()

static void stop_streams ( void  )

static

Definition at line 1485 of file chan_console.c.

{
    struct console_pvt *pvt;
    struct ao2_iterator i;
 
    i = ao2_iterator_init(pvts, 0);
    while ((pvt = ao2_iterator_next(&i))) {
        if (pvt->hookstate)
            stop_stream(pvt);
        unref_pvt(pvt);
    }
    ao2_iterator_destroy(&i);
}

References ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next, console_pvt::hookstate, pvts, stop_stream(), and unref_pvt().

Referenced by unload_module().

store_callerid()

static void store_callerid ( struct console_pvt *  pvt, const char *  value  )

static

Definition at line 1307 of file chan_console.c.

{
    char cid_name[256];
    char cid_num[256];
 
    ast_callerid_split(value, cid_name, sizeof(cid_name),
        cid_num, sizeof(cid_num));
 
    ast_string_field_set(pvt, cid_name, cid_name);
    ast_string_field_set(pvt, cid_num, cid_num);
}

References ast_callerid_split(), ast_string_field_set, and value.

Referenced by store_config_core().

store_config_core()

static void store_config_core ( struct console_pvt *  pvt, const char *  var, const char *  value  )

static

Store a configuration parameter in a pvt struct.

Note

This function expects the pvt lock to be held.

Definition at line 1324 of file chan_console.c.

{
    if (pvt == &globals && !ast_jb_read_conf(&global_jbconf, var, value))
        return;
 
    CV_START(var, value);
 
    CV_STRFIELD("context", pvt, context);
    CV_STRFIELD("extension", pvt, exten);
    CV_STRFIELD("mohinterpret", pvt, mohinterpret);
    CV_STRFIELD("language", pvt, language);
    CV_F("callerid", store_callerid(pvt, value));
    CV_BOOL("overridecontext", pvt->overridecontext);
    CV_BOOL("autoanswer", pvt->autoanswer);
    CV_STRFIELD("parkinglot", pvt, parkinglot);
 
    if (pvt != &globals) {
        CV_F("active", set_active(pvt, value))
        CV_STRFIELD("input_device", pvt, input_device);
        CV_STRFIELD("output_device", pvt, output_device);
    }
 
    ast_log(LOG_WARNING, "Unknown option '%s'\n", var);
 
    CV_END;
}

References ast_jb_read_conf(), ast_log, console_pvt::autoanswer, voicemailpwcheck::context, CV_BOOL, CV_END, CV_F, CV_START, CV_STRFIELD, global_jbconf, globals, language, LOG_WARNING, mohinterpret, console_pvt::overridecontext, set_active(), store_callerid(), value, and var.

Referenced by build_device(), and load_config().

stream_monitor()

static void * stream_monitor ( void *  data )

static

Stream monitor thread.

• data A pointer to the console_pvt structure that contains the portaudio stream that needs to be monitored.

This function runs in its own thread to monitor data coming in from a portaudio stream. When enough data is available, it is queued up to be read from the Asterisk channel.

Definition at line 265 of file chan_console.c.

{
    struct console_pvt *pvt = data;
    char buf[NUM_SAMPLES * sizeof(int16_t)];
    PaError res;
    struct ast_frame f = {
        .frametype = AST_FRAME_VOICE,
        .subclass.format = ast_format_slin16,
        .src = "console_stream_monitor",
        .data.ptr = buf,
        .datalen = sizeof(buf),
        .samples = sizeof(buf) / sizeof(int16_t),
    };
 
    for (;;) {
        console_pvt_lock(pvt);
        res = Pa_ReadStream(pvt->stream, buf, sizeof(buf) / sizeof(int16_t));
        console_pvt_unlock(pvt);
 
        if (!pvt->owner || pvt->abort) {
            return NULL;
        }
 
        if (res == paNoError) {
            ast_queue_frame(pvt->owner, &f);
        } else {
            ast_log(LOG_WARNING, "Console ReadStream failed: %s\n", Pa_GetErrorText(res));
        }
    }
 
    return NULL;
}

References console_pvt::abort, ast_format_slin16, AST_FRAME_VOICE, ast_log, ast_queue_frame(), buf, console_pvt_lock, console_pvt_unlock, ast_frame::frametype, LOG_WARNING, NULL, NUM_SAMPLES, console_pvt::owner, ast_frame::samples, and console_pvt::stream.

Referenced by start_stream().

unload_module()

static int unload_module ( void  )

static

Definition at line 1499 of file chan_console.c.

{
    ao2_ref(console_tech.capabilities, -1);
    console_tech.capabilities = NULL;
    ast_channel_unregister(&console_tech);
    ast_cli_unregister_multiple(cli_console, ARRAY_LEN(cli_console));
 
    stop_streams();
 
    Pa_Terminate();
 
    /* Will unref all the pvts so they will get destroyed, too */
    ao2_ref(pvts, -1);
 
    pvt_destructor(&globals);
 
    return 0;
}

References ao2_ref, ARRAY_LEN, ast_channel_unregister(), ast_cli_unregister_multiple(), ast_channel_tech::capabilities, cli_console, console_tech, globals, NULL, pvt_destructor(), pvts, and stop_streams().

unref_pvt()

static struct console_pvt * unref_pvt ( struct console_pvt *  pvt )

inlinestatic

Definition at line 240 of file chan_console.c.

{
    ao2_ref(pvt, -1);
    return NULL;
}

References ao2_ref, and NULL.

Referenced by build_device(), cli_console_active(), cli_console_answer(), cli_console_autoanswer(), cli_console_dial(), cli_console_flash(), cli_console_hangup(), cli_console_mute(), cli_console_sendtext(), cli_list_devices(), console_hangup(), console_request(), destroy_pvts(), set_active(), and stop_streams().

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Console Channel Driver" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_EXTENDED, .load = load_module, .unload = unload_module, .reload = reload, .load_pri = AST_MODPRI_CHANNEL_DRIVER, }

static

Definition at line 1592 of file chan_console.c.

active_lock

ast_rwlock_t active_lock = { PTHREAD_RWLOCK_INITIALIZER , NULL, {1, 0} }

static

Definition at line 178 of file chan_console.c.

Referenced by destroy_pvts(), get_active_pvt(), and set_active().

active_pvt

struct console_pvt* active_pvt

static

Definition at line 177 of file chan_console.c.

Referenced by cli_list_devices(), destroy_pvts(), get_active_pvt(), and set_active().

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 1592 of file chan_console.c.

cli_console

struct ast_cli_entry cli_console[]

static

Definition at line 1258 of file chan_console.c.

Referenced by load_module(), and unload_module().

config_file

const char config_file[] = "console.conf"

static

Definition at line 116 of file chan_console.c.

Referenced by load_config().

console_tech

struct ast_channel_tech console_tech

static

Definition at line 211 of file chan_console.c.

Referenced by console_new(), console_request(), load_module(), and unload_module().

default_jbconf

struct ast_jb_conf default_jbconf

static

Global jitterbuffer configuration.

Note

Disabled by default.

Values shown here match the defaults shown in console.conf.sample

Definition at line 186 of file chan_console.c.

Referenced by load_config().

global_jbconf

struct ast_jb_conf global_jbconf

static

Definition at line 193 of file chan_console.c.

Referenced by console_new(), load_config(), and store_config_core().

globals

struct console_pvt globals

static

Examples

app_skel.c.

Referenced by __ast_udptl_reload(), acf_jabberreceive_read(), acf_jabberstatus_read(), app_exec(), ast_get_builtin_feature(), ast_get_chan_applicationmap(), ast_get_chan_featuremap_config(), ast_get_chan_features_general_config(), ast_get_chan_features_pickup_config(), ast_get_chan_features_xfer_config(), ast_named_acl_find(), ast_udptl_new_with_bindaddr(), ast_xmpp_client_find(), cli_complete_notify(), cli_display_named_acl(), cli_display_named_acl_list(), cli_notify(), delete_old_messages(), generate_or_link_lots_to_configs(), get_feature_ds(), global_loaded_observer(), handle_cli_show_config(), handle_feature_show(), handle_show_named_acl_cmd(), handle_skel_show_config(), handle_skel_show_levels(), jingle_endpoint_state_find_or_create(), jingle_request(), load_config(), load_module(), manager_jabber_send(), manager_notify_endpoint(), manager_notify_uri(), parking_dynamic_lots_enabled(), remove_all_configured_parking_lot_extensions(), set_active(), set_pvt_defaults(), skel_find_or_create_state(), stasis_cleanup(), stasis_init(), stasis_message_type_declined(), store_config_core(), unbound_config_apply_default(), unbound_resolver_resolve(), unload_features_config(), unload_module(), xmpp_action_hook(), xmpp_cli_create_collection(), xmpp_cli_create_leafnode(), xmpp_cli_delete_pubsub_node(), xmpp_cli_list_pubsub_nodes(), xmpp_cli_purge_pubsub_nodes(), xmpp_client_config_post_apply(), xmpp_client_find_or_create(), xmpp_client_reconnect(), xmpp_client_send_message(), xmpp_client_set_group_presence(), xmpp_client_set_presence(), xmpp_client_thread(), xmpp_component_register_get_hook(), xmpp_component_service_discovery_get_hook(), xmpp_component_service_discovery_items_hook(), xmpp_config_post_apply(), xmpp_config_prelink(), xmpp_connect_hook(), xmpp_init_event_distribution(), xmpp_join_exec(), xmpp_leave_exec(), xmpp_log_hook(), xmpp_pubsub_build_publish_skeleton(), xmpp_pubsub_handle_error(), xmpp_pubsub_iq_create(), xmpp_pubsub_publish_device_state(), xmpp_pubsub_subscribe(), xmpp_roster_hook(), xmpp_send_cb(), xmpp_send_exec(), xmpp_sendgroup_exec(), xmpp_show_buddies(), and xmpp_show_clients().

globals_lock

ast_mutex_t globals_lock = { PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP , NULL, {1, 0} }

static

Definition at line 172 of file chan_console.c.

Referenced by load_config(), and set_pvt_defaults().

pvts

struct ao2_container* pvts

static

Definition at line 174 of file chan_console.c.

Referenced by build_device(), cli_console_active(), cli_list_devices(), destroy_pvts(), find_pvt(), load_config(), load_module(), stop_streams(), and unload_module().