surfaces/mackie/meter.h

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/*
 * Copyright (C) 2006-2007 John Anderson
 * Copyright (C) 2012-2016 Paul Davis <paul@linuxaudiosystems.com>
 *
 * 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_mackie_control_protocol_meter_h__
#define __ardour_mackie_control_protocol_meter_h__
 
#include "controls.h"
#include "midi_byte_array.h"
 
namespace ArdourSurface  { namespace MACKIE_NAMESPACE {
 
class SurfacePort;
 
class Meter : public Control
{
public:
        Meter (int id, std::string name, Group & group)
                : Control  (id, name, group)
                , _enabled (false)
                , overload_on (false) {}
 
 
        void send_update (Surface&, float dB);
        bool enabled () const { return _enabled; }
 
        MidiByteArray zero();
        static std::pair<bool, float> calculate_meter_over_and_deflection (float dB);
 
        static Control* factory (Surface&, int id, const char*, Group&);
 
        void notify_metering_state_changed(Surface& surface, bool transport_is_rolling, bool metering_active);
 
  private:
        bool _enabled;
        bool overload_on;
};
 
} // Mackie namespace
} // ArdourSurface namespace
 
#endif /* __ardour_mackie_control_protocol_meter_h__ */