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/*
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_slavable_h__
#define __ardour_slavable_h__
#include <set>
#include <string>
#include <stdint.h>
#include <boost/shared_ptr.hpp>
#include "pbd/signals.h"
#include "evoral/Parameter.hpp"
#include "ardour/types.h"
#include "ardour/libardour_visibility.h"
class XMLNode;
namespace ARDOUR {
class VCA;
class VCAManager;
class AutomationControl;
class SlavableAutomationControl;
class LIBARDOUR_API Slavable
{
public:
Slavable ();
virtual ~Slavable() {}
XMLNode& get_state () const;
int set_state (XMLNode const&, int);
void assign (boost::shared_ptr<VCA>);
void unassign (boost::shared_ptr<VCA>);
PBD::Signal2<void,boost::shared_ptr<VCA>,bool> AssignmentChange;
virtual boost::shared_ptr<AutomationControl> automation_control (const Evoral::Parameter&) = 0;
static std::string xml_node_name;
/* signal sent VCAManager once assignment is possible */
static PBD::Signal1<void,VCAManager*> Assign;
protected:
virtual SlavableControlList slavables () const = 0;
private:
bool assign_controls (boost::shared_ptr<VCA>);
void unassign_controls (boost::shared_ptr<VCA>);
bool assign_control (boost::shared_ptr<VCA>, boost::shared_ptr<SlavableAutomationControl>);
void unassign_control (boost::shared_ptr<VCA>, boost::shared_ptr<SlavableAutomationControl>);
mutable Glib::Threads::RWLock master_lock;
std::set<uint32_t> _masters;
PBD::ScopedConnection assign_connection;
PBD::ScopedConnectionList unassign_connections;
int do_assign (VCAManager* s);
void weak_unassign (boost::weak_ptr<VCA>);
};
} // namespace ARDOUR
#endif /* __ardour_slavable_h__ */
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