asterisk users - Jan 2010 - MeetMe Conferencing - Announce your own join/leave to yourself and other conference members

Hi all,

I'm trying to get the MeetMe system to take a caller and announce to them
they've joined the conference in addition to the other members of the
conference assuming previous members of the conference >= 1.

I can see where the meetme.c app actually processes it using the
ast_pthread_create_background(&conf->announcethread, NULL,
announce_thread, conf); function. The problem is that it's passing the conf
data and not the chan data so it filters out the new caller to the conference
and announces the caller's name to the rest of the conference with the
announce_thread function. Without the chan data available, it makes quick and
dirty hacks even impossible without more insight into the structure of the app (
i was thinking of just adding a seperate ast_streamfile / ast_waitstream with
the chan variable using an if current->announcetype == CONF_HASJOIN or
something like that).

Unless I'm missing a way to pass the Asterisk API function
ast_pthread_create_background more than one argument and then modify the
announce_thread to accommodate it, I'm at a bit of a loss on a good way of
doing this without making Asterisk seg fault.

The second idea I had was to use a simple conf-background.agi (below) and do it
that way while altering how meetme is called from the actual separate
conferencing agi app. This method does work for announcing the user but the
separate channels refuse to mix audio afterwards (and I have tried every trick
in the book I can think of with this one down to EAGI stuff). If I take the
'b' option off of the MeetMe call in the AGI script, the audio passes
perfectly. Additionally, attempts at using the manager interface to unlock,
unmute, etc. the conference have no effect. Aside from the audio (obviously a
big deal), the script runs as designed (DTMF detection, etc.).

Any ideas or help would be appreciated.

Many thanks,

- Darren


POI:

Asterisk 1.6.1.6
app_meetme.c - line 1601 (the announce_thread function)
app_meetme.c - line 1817 (the conf_run function)


-- snip --

#!/usr/bin/perl -w

use strict;
use warnings;

use lib '/var/lib/asterisk/agi-bin';

use DBI;
use Asterisk::AGI;

our ($AGI,%v,%ast);

$AGI = new Asterisk::AGI;
%ast = $AGI->ReadParse();

$v{chan} = $ast{channel};
$v{lang} = $AGI->get_variable('CHANNEL(language)');
$v{conf} = $AGI->get_variable('conference_call');

$v{dbh} = <sanitized>

($v{q},$v{r}) = undef;
$v{q} = "SELECT members FROM <sanitized> WHERE confno =
'".$v{conf}."'";
$AGI->verbose($v{q});
$v{q} = $v{dbh}->prepare($v{q});
if (!$v{q}->execute) {
 exit;
}
$v{r} = $v{q}->fetchrow_hashref();
$v{q}->finish();
$v{dbh}->disconnect;

if ($v{r}{members} > 1) {
 $AGI->stream_file("/var/spool/asterisk/meetme/meetme-username-".$v{conf}."-".$v{r}{members});
}

while (!$v{loop}) {
 exit if (!$AGI->channel_status($v{chan})); 
 $v{rc} = $AGI->wait_for_digit('60000');
}

exit;

Well, never mind on this (didn't get any responses anyways). I basically
removed the meetme announcement options and wrote the functionality from scratch
into my AGI framework along with an announcement queuing daemon that runs
continuously every second in the background that generates a call file and plays
back the user name recording. Hasn't added any CPU overhead with the call
processing and along with working as intended I think there maybe some other
unique capabilities for it down the road.

In any case, thought I'd update the thread.

Cheers,

- Darren



On Jan 11, 2010, at 10:05 AM, Darren Sessions wrote:
> Hi all,
> 
> I'm trying to get the MeetMe system to take a caller and announce to
them they've joined the conference in addition to the other members of the
conference assuming previous members of the conference >= 1.
> 
> I can see where the meetme.c app actually processes it using the
ast_pthread_create_background(&conf->announcethread, NULL,
announce_thread, conf); function. The problem is that it's passing the conf
data and not the chan data so it filters out the new caller to the conference
and announces the caller's name to the rest of the conference with the
announce_thread function. Without the chan data available, it makes quick and
dirty hacks even impossible without more insight into the structure of the app (
i was thinking of just adding a seperate ast_streamfile / ast_waitstream with
the chan variable using an if current->announcetype == CONF_HASJOIN or
something like that).
> 
> Unless I'm missing a way to pass the Asterisk API function
ast_pthread_create_background more than one argument and then modify the
announce_thread to accommodate it, I'm at a bit of a loss on a good way of
doing this without making Asterisk seg fault.
> 
> The second idea I had was to use a simple conf-background.agi (below) and
do it that way while altering how meetme is called from the actual separate
conferencing agi app. This method does work for announcing the user but the
separate channels refuse to mix audio afterwards (and I have tried every trick
in the book I can think of with this one down to EAGI stuff). If I take the
'b' option off of the MeetMe call in the AGI script, the audio passes
perfectly. Additionally, attempts at using the manager interface to unlock,
unmute, etc. the conference have no effect. Aside from the audio (obviously a
big deal), the script runs as designed (DTMF detection, etc.).
> 
> Any ideas or help would be appreciated.
> 
> Many thanks,
> 
> - Darren
> 
> 
> POI:
> 
> Asterisk 1.6.1.6
> app_meetme.c - line 1601 (the announce_thread function)
> app_meetme.c - line 1817 (the conf_run function)
> 
> 
> -- snip --
> 
> #!/usr/bin/perl -w
> 
> use strict;
> use warnings;
> 
> use lib '/var/lib/asterisk/agi-bin';
> 
> use DBI;
> use Asterisk::AGI;
> 
> our ($AGI,%v,%ast);
> 
> $AGI = new Asterisk::AGI;
> %ast = $AGI->ReadParse();
> 
> $v{chan} = $ast{channel};
> $v{lang} = $AGI->get_variable('CHANNEL(language)');
> $v{conf} = $AGI->get_variable('conference_call');
> 
> $v{dbh} = <sanitized>
> 
> ($v{q},$v{r}) = undef;
> $v{q} = "SELECT members FROM <sanitized> WHERE confno =
'".$v{conf}."'";
> $AGI->verbose($v{q});
> $v{q} = $v{dbh}->prepare($v{q});
> if (!$v{q}->execute) {
> exit;
> }
> $v{r} = $v{q}->fetchrow_hashref();
> $v{q}->finish();
> $v{dbh}->disconnect;
> 
> if ($v{r}{members} > 1) {
>
$AGI->stream_file("/var/spool/asterisk/meetme/meetme-username-".$v{conf}."-".$v{r}{members});
> }
> 
> while (!$v{loop}) {
> exit if (!$AGI->channel_status($v{chan})); 
> $v{rc} = $AGI->wait_for_digit('60000');
> }
> 
> exit;
> 
> -- 
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