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livetrax/libs/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 {
class SurfacePort;
class Meter : public Control
{
public:
Meter (int id, std::string name, Group & group)
: Control (id, name, group)
, _enabled (false)
, overload_on (false) {}
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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__ */