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/*
Copyright (C) 2004 Paul Davis
This program 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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <iostream>
#include <errno.h>
#include <jack/jack.h>
#include <jack/transport.h>
#include "ardour/slave.h"
#include "ardour/session.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace sigc;
JACK_Slave::JACK_Slave (jack_client_t* j)
: jack (j)
{
double x;
nframes_t p;
/* call this to initialize things */
speed_and_position (x, p);
}
JACK_Slave::~JACK_Slave ()
{
}
void
JACK_Slave::reset_client (jack_client_t* j)
{
jack = j;
}
bool
JACK_Slave::locked() const
{
return true;
}
bool
JACK_Slave::ok() const
{
return true;
}
bool
JACK_Slave::speed_and_position (double& sp, nframes_t& position)
{
jack_position_t pos;
jack_transport_state_t state;
state = jack_transport_query (jack, &pos);
switch (state) {
case JackTransportStopped:
speed = 0;
_starting = false;
break;
case JackTransportRolling:
speed = 1.0;
_starting = false;
break;
case JackTransportLooping:
speed = 1.0;
_starting = false;
break;
case JackTransportStarting:
_starting = true;
// don't adjust speed here, just leave it as it was
break;
default:
cerr << "WARNING: Unknown JACK transport state: " << state << endl;
}
sp = speed;
position = pos.frame;
return true;
}
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