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/*
* Copyright (C) 2006-2012 David Robillard <d@drobilla.net>
* Copyright (C) 2007-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2013-2019 Robin Gareus <robin@gareus.org>
*
* 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_meter_h__
#define __ardour_meter_h__
#include <vector>
#include "ardour/libardour_visibility.h"
#include "ardour/types.h"
#include "ardour/processor.h"
#include "pbd/fastlog.h"
#include "ardour/kmeterdsp.h"
#include "ardour/iec1ppmdsp.h"
#include "ardour/iec2ppmdsp.h"
#include "ardour/vumeterdsp.h"
namespace ARDOUR {
class BufferSet;
class ChanCount;
class Session;
/** Meters peaks on the input and stores them for access.
*/
class LIBARDOUR_API PeakMeter : public Processor {
public:
PeakMeter(Session& s, const std::string& name);
~PeakMeter();
void reset ();
void reset_max ();
bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
bool configure_io (ChanCount in, ChanCount out);
/* special method for meter, to ensure that it can always handle the maximum
number of streams in the route, no matter where we put it.
*/
void set_max_channels (const ChanCount&);
/* tell the meter than no matter how many channels it can handle,
`in' is the number it is actually going be handling from
now on.
*/
void reflect_inputs (const ChanCount& in);
void emit_configuration_changed ();
/** Compute peaks */
void run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sample, double speed, pframes_t nframes, bool);
void activate () { }
void deactivate () { }
ChanCount input_streams () const { return current_meters; }
ChanCount output_streams () const { return current_meters; }
float meter_level (uint32_t n, MeterType type);
void set_meter_type (MeterType t);
MeterType meter_type () const { return _meter_type; }
PBD::Signal1<void, MeterType> MeterTypeChanged;
protected:
XMLNode& state ();
private:
friend class IO;
/** The number of meters that we are currently handling;
* may be different to _configured_input and _configured_output
* as it can be altered outside a \ref configure_io by \ref reflect_inputs .
*/
ChanCount current_meters;
bool _reset_dpm;
bool _reset_max;
uint32_t _bufcnt;
std::vector<float> _peak_buffer; // internal, integrate
std::vector<float> _peak_power; // includes accurate falloff, hence dB
std::vector<float> _max_peak_signal; // dB calculation is done on demand
float _combined_peak; // Mackie surfaces expect the highest peak of all track channels
std::vector<Kmeterdsp *> _kmeter;
std::vector<Iec1ppmdsp *> _iec1meter;
std::vector<Iec2ppmdsp *> _iec2meter;
std::vector<Vumeterdsp *> _vumeter;
MeterType _meter_type;
};
} // namespace ARDOUR
#endif // __ardour_meter_h__
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