87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
/* This file is part of Evoral.
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* Copyright (C) 2008 David Robillard <http://drobilla.net>
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* Copyright (C) 2000-2008 Paul Davis
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*
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* Evoral is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef EVORAL_CONTROL_HPP
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#define EVORAL_CONTROL_HPP
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#include <set>
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#include <map>
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#include <boost/shared_ptr.hpp>
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#include "pbd/signals.h"
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#include "evoral/visibility.h"
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#include "evoral/Parameter.hpp"
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#include "evoral/ParameterDescriptor.hpp"
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namespace Evoral {
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class ControlList;
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class ParameterDescriptor;
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class Transport;
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class TypeMap;
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/** Base class representing some kind of (automatable) control; a fader's gain,
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* for example, or a compressor plugin's threshold.
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*
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* The class knows the Evoral::Parameter that it is controlling, and has
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* a list of values for automation.
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*/
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class LIBEVORAL_API Control
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{
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public:
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Control(const Parameter& parameter,
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const ParameterDescriptor& desc,
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boost::shared_ptr<ControlList> list);
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virtual ~Control() {}
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virtual void set_double (double val, double frame=0, bool to_list=false);
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virtual double get_double (bool from_list=false, double frame=0) const;
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/** Get the latest user-set value
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* (which may not equal get_value() when automation is playing back).
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*
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* Automation write/touch works by periodically sampling this value
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* and adding it to the ControlList.
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*/
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double user_double() const { return _user_value; }
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void set_list(boost::shared_ptr<ControlList>);
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boost::shared_ptr<ControlList> list() { return _list; }
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boost::shared_ptr<const ControlList> list() const { return _list; }
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inline const Parameter& parameter() const { return _parameter; }
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/** Emitted when the our ControlList is marked dirty */
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PBD::Signal0<void> ListMarkedDirty;
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protected:
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Parameter _parameter;
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boost::shared_ptr<ControlList> _list;
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double _user_value;
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PBD::ScopedConnection _list_marked_dirty_connection;
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private:
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void list_marked_dirty ();
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};
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} // namespace Evoral
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#endif // EVORAL_CONTROL_HPP
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