/*
    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.
*/

#ifndef __ardour_phase_control_h__
#define __ardour_phase_control_h__

#include <string>

#include <boost/shared_ptr.hpp>
#include <boost/dynamic_bitset.hpp>

#include "ardour/slavable_automation_control.h"
#include "ardour/libardour_visibility.h"

namespace ARDOUR {

class Session;

/* Note that PhaseControl is not Slavable. There's no particular reason for
 * this, it could be changed at any time. But it seems useless.
 */

class LIBARDOUR_API PhaseControl : public AutomationControl
{
  public:
	PhaseControl (Session& session, std::string const & name);

	/* There are two approaches to designing/using a PhaseControl. One is
	 * to have one such control for every channel of the control's
	 * owner. The other is to have a single control which manages all
	 * channels. For now (Spring 2016) we're using the second design.
	 */

	void set_phase_invert (uint32_t, bool yn);
	void set_phase_invert (boost::dynamic_bitset<>);
	bool inverted (uint32_t chn) const { return _phase_invert[chn]; }

	bool none () const { return !_phase_invert.any(); }
	bool any() const { return _phase_invert.any(); }
	uint64_t count() const { return _phase_invert.count(); }
	uint64_t size() const { return _phase_invert.size(); }
	void resize (uint32_t);

	int set_state (XMLNode const&, int);
	XMLNode& get_state ();

  protected:
	void actually_set_value (double, PBD::Controllable::GroupControlDisposition group_override);

  private:
	boost::dynamic_bitset<> _phase_invert;
};

} /* namespace */

#endif /* __libardour_phase_control_h__ */