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/*
Copyright (C) 2006-2016 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_gain_control_h__
#define __ardour_gain_control_h__
#include <string>
#include <map>
#include <boost/shared_ptr.hpp>
#include <glibmm/threads.h>
#include "pbd/controllable.h"
#include "evoral/Parameter.hpp"
#include "ardour/automation_control.h"
#include "ardour/libardour_visibility.h"
namespace ARDOUR {
class Session;
class LIBARDOUR_API GainControl : public AutomationControl {
public:
GainControl (Session& session, const Evoral::Parameter ¶m,
boost::shared_ptr<AutomationList> al = boost::shared_ptr<AutomationList>());
double get_value () const;
void set_value (double val, PBD::Controllable::GroupControlDisposition group_override);
void set_value_unchecked (double);
double internal_to_interface (double) const;
double interface_to_internal (double) const;
double internal_to_user (double) const;
double user_to_internal (double) const;
std::string get_user_string () const;
double lower_db;
double range_db;
gain_t get_master_gain () const;
void add_master (boost::shared_ptr<VCA>);
void remove_master (boost::shared_ptr<VCA>);
void clear_masters ();
bool slaved_to (boost::shared_ptr<VCA>) const;
bool slaved () const;
std::vector<uint32_t> masters () const;
PBD::Signal0<void> VCAStatusChange;
int set_state (XMLNode const&, int);
XMLNode& get_state();
private:
class MasterRecord {
public:
MasterRecord (boost::shared_ptr<AutomationControl> gc, double r)
: _master (gc)
, _ratio (r)
{}
boost::shared_ptr<AutomationControl> master() const { return _master; }
double ratio () const { return _ratio; }
void reset_ratio (double r) { _ratio = r; }
PBD::ScopedConnection connection;
private:
boost::shared_ptr<AutomationControl> _master;
double _ratio;
};
mutable Glib::Threads::RWLock master_lock;
typedef std::map<uint32_t,MasterRecord> Masters;
Masters _masters;
PBD::ScopedConnectionList masters_connections;
std::string masters_string;
PBD::ScopedConnection vca_loaded_connection;
gain_t get_value_locked () const;
gain_t get_master_gain_locked () const;
void master_going_away (boost::weak_ptr<VCA>);
void recompute_masters_ratios (double val);
void vcas_loaded();
void _set_value (double val, PBD::Controllable::GroupControlDisposition group_override);
};
} /* namespace */
#endif /* __ardour_gain_control_h__ */
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