/**
* Remove a call from the conference.
* @param lc the linphone core
* @param call a call that has been previously merged into the conference.
*
* After removing the remote participant belonging to the supplied call, the call becomes a normal call in paused state.
* If one single remote participant is left alone together with the local user in the conference after the removal, then the conference is
* automatically transformed into a simple call in StreamsRunning state.
* The conference's resources are then automatically destroyed.
*
* In other words, unless linphone_core_leave_conference() is explicitely called, the last remote participant of a conference is automatically
* put in a simple call in running state.
*
* @returns 0 if successful, -1 otherwise.
**/
int linphone_core_remove_from_conference(LinphoneCore *lc, LinphoneCall *call){
char * str=linphone_call_get_remote_address_as_string(call);
ms_message("Removing call %s from the conference", str);
ms_free(str);
int err=remove_from_conference(lc,call, FALSE);
if (err){
ms_error("Error removing participant from conference.");
return err;
}
if (remote_participants_count(&lc->conf_ctx)==1){
ms_message("conference size is 1: need to be converted to plain call");
err=convert_conference_to_call(lc);
} else {
ms_message("the conference need not to be converted as size is %i", remote_participants_count(&lc->conf_ctx));
}
return err;
}
static int convert_conference_to_call(LinphoneCore *lc){
int err=0;
MSList *calls=lc->calls;
if (remote_participants_count(&lc->conf_ctx)!=1){
ms_error("No unique call remaining in conference.");
return -1;
}
while (calls) {
LinphoneCall *rc=(LinphoneCall*)calls->data;
calls=calls->next;
if (rc->params.in_conference) { // not using current_param
bool_t active_after_removed=linphone_core_is_in_conference(lc);
err=remove_from_conference(lc, rc, active_after_removed);
break;
}
}
return err;
}