mirror of https://github.com/sipwise/sems.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
124 lines
3.7 KiB
124 lines
3.7 KiB
/*
|
|
* Copyright (C) 2010 Stefan Sayer
|
|
* Copyright (C) 2011 Raphael Coeffic
|
|
*
|
|
* This file is part of SEMS, a free SIP media server.
|
|
*
|
|
* SEMS is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version. This program is released under
|
|
* the GPL with the additional exemption that compiling, linking,
|
|
* and/or using OpenSSL is allowed.
|
|
*
|
|
* For a license to use the SEMS software under conditions
|
|
* other than those described here, or to purchase support for this
|
|
* software, please contact iptel.org by e-mail at the following addresses:
|
|
* info@iptel.org
|
|
*
|
|
* SEMS is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "AmDtmfSender.h"
|
|
#include "AmRtpStream.h"
|
|
|
|
#include "rtp/telephone_event.h"
|
|
|
|
AmDtmfSender::AmDtmfSender()
|
|
: sending_state(DTMF_SEND_NONE)
|
|
{
|
|
}
|
|
|
|
/** Add a DTMF event to the send queue */
|
|
void AmDtmfSender::queueEvent(int event, unsigned int duration_ms, unsigned int sample_rate)
|
|
{
|
|
send_queue_mut.lock();
|
|
send_queue.push(std::make_pair(event, duration_ms * sample_rate / 1000));
|
|
send_queue_mut.unlock();
|
|
DBG("enqueued DTMF event %i duration %u\n", event, duration_ms);
|
|
}
|
|
|
|
/** Processes the send queue according to the timestamp */
|
|
void AmDtmfSender::sendPacket(unsigned int ts, unsigned int remote_pt, AmRtpStream* stream)
|
|
{
|
|
while (true) {
|
|
switch(sending_state) {
|
|
case DTMF_SEND_NONE: {
|
|
send_queue_mut.lock();
|
|
if (send_queue.empty()) {
|
|
send_queue_mut.unlock();
|
|
return;
|
|
}
|
|
current_send_dtmf = send_queue.front();
|
|
current_send_dtmf_ts = ts;
|
|
send_queue.pop();
|
|
send_queue_mut.unlock();
|
|
sending_state = DTMF_SEND_SENDING;
|
|
current_send_dtmf_ts = ts;
|
|
DBG("starting to send DTMF\n");
|
|
} break;
|
|
|
|
case DTMF_SEND_SENDING: {
|
|
if (ts_less()(ts, current_send_dtmf_ts + current_send_dtmf.second)) {
|
|
// send packet
|
|
//if (!remote_telephone_event_pt.get())
|
|
//return;
|
|
|
|
dtmf_payload_t dtmf;
|
|
dtmf.event = current_send_dtmf.first;
|
|
dtmf.e = dtmf.r = 0;
|
|
dtmf.duration = htons(ts - current_send_dtmf_ts);
|
|
dtmf.volume = 20;
|
|
|
|
DBG("sending DTMF: event=%i; e=%i; r=%i; volume=%i; duration=%i; ts=%u\n",
|
|
dtmf.event,dtmf.e,dtmf.r,dtmf.volume,ntohs(dtmf.duration),current_send_dtmf_ts);
|
|
|
|
stream->compile_and_send(remote_pt, dtmf.duration == 0,
|
|
current_send_dtmf_ts,
|
|
(unsigned char*)&dtmf, sizeof(dtmf_payload_t));
|
|
return;
|
|
|
|
} else {
|
|
DBG("ending DTMF\n");
|
|
sending_state = DTMF_SEND_ENDING;
|
|
send_dtmf_end_repeat = 0;
|
|
}
|
|
} break;
|
|
|
|
case DTMF_SEND_ENDING: {
|
|
if (send_dtmf_end_repeat >= 3) {
|
|
DBG("DTMF send complete\n");
|
|
sending_state = DTMF_SEND_NONE;
|
|
} else {
|
|
send_dtmf_end_repeat++;
|
|
// send packet with end bit set, duration = event duration
|
|
//if (!remote_telephone_event_pt.get())
|
|
//return;
|
|
|
|
dtmf_payload_t dtmf;
|
|
dtmf.event = current_send_dtmf.first;
|
|
dtmf.e = 1;
|
|
dtmf.r = 0;
|
|
dtmf.duration = htons(current_send_dtmf.second);
|
|
dtmf.volume = 20;
|
|
|
|
DBG("sending DTMF: event=%i; e=%i; r=%i; volume=%i; duration=%i; ts=%u\n",
|
|
dtmf.event,dtmf.e,dtmf.r,dtmf.volume,ntohs(dtmf.duration),current_send_dtmf_ts);
|
|
|
|
stream->compile_and_send(remote_pt, false, current_send_dtmf_ts,
|
|
(unsigned char*)&dtmf, sizeof(dtmf_payload_t));
|
|
return;
|
|
}
|
|
} break;
|
|
};
|
|
}
|
|
}
|
|
|