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/*
* Copyright (C) 2016-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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.h"
#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);
virtual 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;
std::vector<boost::shared_ptr<VCA> > masters (VCAManager*) const;
/** recursively test for master assignment to given VCA */
bool assigned_to (VCAManager*, boost::shared_ptr<VCA>) const;
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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