Hi, I ma interested in the VAD algorithm used where where is the code exactly? maybe a link any document support about the vad alogorithm used therein? thanks, Zelda At 01:47 14/02/2008, Anthony Minessale wrote:
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@auronix.com> To: freeswitch-dev@lists.freeswitch.org Sent: Wednesday, February 13, 2008 10:17:23 AM Subject: Re: [Freeswitch-dev] VAD, TALK and NOTALK events
Please correct me if Im 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 Im missing.
Cesar Cepeda.
De: freeswitch-dev-bounces@lists.freeswitch.org [mailto:freeswitch-dev-bounces@lists.freeswitch.org] En nombre de Anthony Minessale Enviado el: Miércoles, 13 de Febrero de 2008 08:17 Para: freeswitch-dev@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
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----- Original Message ---- From: Cesar Cepeda <cesar@auronix.com> To: freeswitch-dev@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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