[Freeswitch-dev] VAD, TALK and NOTALK events

Wed Feb 13 19:47:29 EST 2008

They are enabled by the vad params in the sofia profile xml
<param name="vad">

Anthony Minessale II

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----- Original Message ----
From: Cesar Cepeda <cesar at auronix.com>
To: freeswitch-dev at lists.freeswitch.org
Sent: Wednesday, February 13, 2008 10:17:23 AM
Subject: Re: [Freeswitch-dev] VAD, TALK and NOTALK events

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Please correct me if I’m wrong.  

The events are indeed fired, but only if the
SWITCH_VAD_FLAG_EVENTS_TALK or NOTALK flags are set for an rtp_session.   I
found no place in the code where those flags are set.  That is what I meant by
not  being “enabled”.

I subscribed to the events and received nothing.  Then I set the
flags on switch_rtp_enable_vad function, and then I started receiving the
events.  Perhaps there is another way of doing it that I’m missing.

Cesar Cepeda.

De:
freeswitch-dev-bounces at lists.freeswitch.org
[mailto:freeswitch-dev-bounces at lists.freeswitch.org] En nombre de Anthony
Minessale

Enviado el: Miércoles, 13 de Febrero de 2008 08:17

Para: freeswitch-dev at lists.freeswitch.org

Asunto: Re: [Freeswitch-dev] VAD, TALK and NOTALK events

The
events are fired.

I don't know what you mean by "enabled"

You can either bind an event to a callback

in the load function of your custom module.

or connect to mod_event_socket on tcp

and request "events talk notalk"

void my_event_handler(switch_event_t *event)

{

}

if (switch_event_bind(modname, SWITCH_EVENT_TALK, SWITCH_EVENT_SUBCLASS_ANY,
my_event_handler, NULL)

        != SWITCH_STATUS_SUCCESS) {

switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't
bind!\n");

        return SWITCH_STATUS_GENERR;

    }

if (switch_event_bind(modname, SWITCH_EVENT_NOTALK, SWITCH_EVENT_SUBCLASS_ANY,
my_event_handler, NULL)

        != SWITCH_STATUS_SUCCESS) {

switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't
bind!\n");

        return SWITCH_STATUS_GENERR;

    }

Anthony Minessale II

FreeSWITCH http://www.freeswitch.org/

ClueCon http://www.cluecon.com/

AIM: anthm

MSN:anthony_minessale at hotmail.com

GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com

IRC: irc.freenode.net #freeswitch

FreeSWITCH Developer Conference

sip:888 at conference.freeswitch.org

iax:guest at conference.freeswitch.org/888

googletalk:conf+888 at conference.freeswitch.org

pstn:213-799-1400

----- Original Message ----

From: Cesar Cepeda <cesar at auronix.com>

To: freeswitch-dev at lists.freeswitch.org

Sent: Tuesday, February 12, 2008 6:53:03 PM

Subject: [Freeswitch-dev] VAD, TALK and NOTALK events

Hi,

>From looking at the code of switch_rtp.c  I can see that VAD is done
if

enabled in the sip profile in order to not send packets when there is no

noise. There are also two events {TALK, NOTALK} which can be fired when VAD

kicks in, nevertheless these two events are enabled nowhere (or at least I

didn't find a place in the code where they were enabled), so no matter if

you ask for them you don't receive them.  My questions are the following:

Is there some particular reason for not enabling these two events?  

Is the event queue easily overflowed if these two events are enabled?

Thanks.

Cesar Cepeda.

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