/*
    Copyright (C) 2016 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 "ardour/automation_control.h"
#include "ardour/gain_control.h"
#include "ardour/route.h"
#include "ardour/vca.h"

using namespace ARDOUR;
using namespace PBD;
using std::string;

VCA::VCA (Session& s, const string& n)
	: SessionHandleRef (s)
	, name (n)
	, _control (new GainControl (s, Evoral::Parameter (GainAutomation), boost::shared_ptr<AutomationList> ()))
{
}

void
VCA::set_value (double val, Controllable::GroupControlDisposition gcd)
{
	_control->set_value (val, gcd);
}

double
VCA::get_value() const
{
	return _control->get_value();
}

void
VCA::add (boost::shared_ptr<Route> r)
{
	boost::dynamic_pointer_cast<GainControl>(r->gain_control())->set_master (_control);
}

void
VCA::remove (boost::shared_ptr<Route> r)
{
	boost::shared_ptr<GainControl> route_gain = boost::dynamic_pointer_cast<GainControl>(r->gain_control());
	boost::shared_ptr<GainControl> current_master = route_gain->master();

	if (current_master == _control) {
		route_gain->set_master (boost::shared_ptr<GainControl>());
	}
}