2 Copyright (C) 2016 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_slavable_h__
21 #define __ardour_slavable_h__
27 #include <boost/shared_ptr.hpp>
29 #include "pbd/signals.h"
31 #include "evoral/Parameter.hpp"
33 #include "ardour/types.h"
34 #include "ardour/libardour_visibility.h"
42 class AutomationControl;
43 class SlavableAutomationControl;
45 class LIBARDOUR_API Slavable
49 virtual ~Slavable() {}
51 XMLNode& get_state () const;
52 int set_state (XMLNode const&, int);
54 void assign (boost::shared_ptr<VCA>);
55 void unassign (boost::shared_ptr<VCA>);
57 PBD::Signal2<void,boost::shared_ptr<VCA>,bool> AssignmentChange;
59 virtual boost::shared_ptr<AutomationControl> automation_control (const Evoral::Parameter&) = 0;
61 static std::string xml_node_name;
63 /* signal sent VCAManager once assignment is possible */
64 static PBD::Signal1<void,VCAManager*> Assign;
67 virtual SlavableControlList slavables () const = 0;
70 bool assign_controls (boost::shared_ptr<VCA>);
71 void unassign_controls (boost::shared_ptr<VCA>);
73 bool assign_control (boost::shared_ptr<VCA>, boost::shared_ptr<SlavableAutomationControl>);
74 void unassign_control (boost::shared_ptr<VCA>, boost::shared_ptr<SlavableAutomationControl>);
76 mutable Glib::Threads::RWLock master_lock;
77 std::set<uint32_t> _masters;
78 PBD::ScopedConnection assign_connection;
79 PBD::ScopedConnectionList unassign_connections;
81 int do_assign (VCAManager* s);
82 void weak_unassign (boost::weak_ptr<VCA>);
87 #endif /* __ardour_slavable_h__ */