int queue_incoming_silent_frame( struct ast_conf_member *member, int count) {
struct ast_frame f;
int t = 0;
memset(member->framedata,0,sizeof(member->framedata));
ast_fr_init_ex(&f, AST_FRAME_VOICE, AST_FORMAT_SLINEAR, "Nconf");
f.data = member->framedata;
f.datalen = member->samples * sizeof(short);
f.samples = member->samples;
f.offset = 0;
// Actually queue some frames
for (t = 0; t < count; t++ )
queue_incoming_frame(member,&f);
return 0;
}
static int process_incoming(struct cw_conf_member *member, struct cw_frame *f)
{
int res;
// Play our sound queue, if not empty.
if (member->soundq) {
// Free the frame.
if ( f != NULL ) {
cw_fr_free( f ) ;
}
res = conf_play_soundqueue( member );
if (res != 0) {
queue_incoming_silent_frame(member,2);
// send the DTMF event to the MGR interface..
manager_event(
EVENT_FLAG_CALL,
APP_CONFERENCE_MANID"DTMF",
"Channel: %s\r\n"
"Key: %c\r\n",
member->channel_name,
res
) ;
parse_dtmf_option( member, res);
}
return res;
}
//
// Moderator forces MOH management
//
if ( member->force_on_hold == 1 ) {
cw_moh_start(member->chan,"");
member->force_on_hold = 0 ;
}
else if ( member->force_on_hold == -1 ) {
cw_moh_stop(member->chan);
cw_generator_activate(member->chan,&membergen,member);
member->force_on_hold = 0 ;
}
//
// MOH When the user is alone in the conference
//
if ( member->conf->membercount == 1 &&
member->is_on_hold == 0 &&
member->skip_moh_when_alone == 0
) {
cw_moh_start(member->chan,"");
member->is_on_hold = 1 ;
return 0;
}
if ( member->conf->membercount > 1 &&
member->is_on_hold == 1 &&
member->skip_moh_when_alone == 0
) {
cw_moh_stop(member->chan);
cw_generator_activate(member->chan,&membergen,member);
member->is_on_hold = 0 ;
return 0;
}
if ( member->force_remove_flag == 1 ) {
return 0;
}
// If we don't have any frame to parse, then return
if ( f == NULL ) {
return 0;
}
// Actions based on the content of the frame
if ( f->frametype == CW_FRAME_DTMF && member->manage_dtmf )
{
queue_incoming_silent_frame(member,2);
// send the DTMF event to the MGR interface..
manager_event(
EVENT_FLAG_CALL,
APP_CONFERENCE_MANID"DTMF",
"Channel: %s\r\n"
"Key: %c\r\n",
member->channel_name,
f->subclass
) ;
parse_dtmf_option( member, f->subclass);
cw_fr_free(f);
}
else if ( (member->type == MEMBERTYPE_LISTENER) || (member->talk_mute) )
{
// this is a listen-only user, or it's muted.
// Ignore the frame
cw_fr_free( f ) ;
}
else if ( f->frametype == CW_FRAME_VOICE )
{
// ********************************************************************************** VOICE
int old_speaking_state = member->is_speaking;
#if ENABLE_VAD
if ( member->talk_mute == 1 ) member->is_speaking = 0;
if ( member->enable_vad
&& f->subclass == CW_FORMAT_SLINEAR && f->samples > 0
)
{
// and if it's time to check what the member is doing
if ( member->skip_voice_detection <= 0 || member->is_speaking )
{
int rees;
rees = vad_is_talk( f->data, f->datalen, &member->silence_nr, 20);
// send the frame to the preprocessor
if ( rees != 0 )
{
// voice detected, reset skip count
if ( member->framelen != 0 )
member->skip_voice_detection = (CW_CONF_SKIP_MS_AFTER_VOICE_DETECTION / member->framelen);
else
// Let's suppose that 20ms as a framelen is not too different from the real situation
member->skip_voice_detection = 20;
member->is_speaking=1;
}
else {
// member is silent
member->is_speaking=0;
if ( member->framelen != 0 )
member->skip_voice_detection = ( CW_CONF_SKIP_MS_WHEN_SILENT / member->framelen );
else
member->skip_voice_detection = 5;
}
}
--member->skip_voice_detection ;
}
if (old_speaking_state != member ->is_speaking)
send_state_change_notifications(member);
#endif
// volume of the frame is modified after the VAD has been done
if (member->talk_volume != 0)
set_talk_volume(member, f, 1);
if ( member->is_speaking && queue_incoming_frame( member, f ) != 0 )
cw_log( CW_CONF_DEBUG, "dropped incoming frame, channel => %s\n", member->channel_name ) ;
// free the original frame
cw_fr_free( f ) ;
}
else if ( f->frametype == CW_FRAME_CONTROL && f->subclass == CW_CONTROL_HANGUP )
{
// hangup received, queue silence && free the frame
queue_incoming_silent_frame(member,2);
cw_fr_free( f ) ;
}
else
{
// Unmanaged frame
#if ( APP_NCONFERENCE_DEBUG == 1 )
cw_log(LOG_WARNING,"Freeing unknown frame: type %d member %s \n", f->frametype, member->chan->name );
#endif
cw_fr_free( f ) ;
}
return 0;
}
