/*
    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/phase_control.h"
#include "ardour/session.h"

#include "pbd/i18n.h"

using namespace std;
using namespace PBD;
using namespace ARDOUR;

PhaseControl::PhaseControl (Session& session, std::string const & name)
	: AutomationControl (session, PhaseAutomation, ParameterDescriptor (PhaseAutomation),
	                     boost::shared_ptr<AutomationList>(new AutomationList(Evoral::Parameter(PhaseAutomation))),
	                     name)
{
}

void
PhaseControl::actually_set_value (double val, Controllable::GroupControlDisposition gcd)
{
	_phase_invert = boost::dynamic_bitset<> (std::numeric_limits<double>::digits, (unsigned long) val);

	AutomationControl::actually_set_value (val, gcd);
}

/** @param c Audio channel index.
 *  @param yn true to invert phase, otherwise false.
 */
void
PhaseControl::set_phase_invert (uint32_t c, bool yn)
{
	if (_phase_invert[c] != yn) {
		_phase_invert[c] = yn;
		AutomationControl::actually_set_value (_phase_invert.to_ulong(), Controllable::NoGroup);
		_session.set_dirty ();
	}
}

void
PhaseControl::set_phase_invert (boost::dynamic_bitset<> p)
{
	if (_phase_invert != p) {
		_phase_invert = p;
		AutomationControl::actually_set_value (_phase_invert.to_ulong(), Controllable::NoGroup);
		Changed (true, Controllable::NoGroup); /* EMIT SIGNAL */
		_session.set_dirty ();
	}
}

void
PhaseControl::resize (uint32_t n)
{
	_phase_invert.resize (n);
}

XMLNode&
PhaseControl::get_state ()
{
	XMLNode& node (AutomationControl::get_state ());

	string p;
	boost::to_string (_phase_invert, p);
	node.add_property("phase-invert", p);

	return node;
}

int
PhaseControl::set_state (XMLNode const & node, int version)
{
	AutomationControl::set_state (node, version);

	const XMLProperty* prop;

	if ((prop = node.property (X_("phase-invert"))) != 0) {
		set_phase_invert (boost::dynamic_bitset<> (prop->value ()));
	}

	return 0;
}
