123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
/*
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* Copyright (C) 2006-2012 David Robillard <d@drobilla.net>
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* Copyright (C) 2007-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2013-2020 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __ardour_meter_h__
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#define __ardour_meter_h__
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#include <vector>
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#include "pbd/fastlog.h"
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#include "pbd/g_atomic_compat.h"
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#include "ardour/libardour_visibility.h"
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#include "ardour/processor.h"
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#include "ardour/types.h"
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#include "ardour/iec1ppmdsp.h"
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#include "ardour/iec2ppmdsp.h"
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#include "ardour/kmeterdsp.h"
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#include "ardour/vumeterdsp.h"
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namespace ARDOUR {
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class BufferSet;
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class ChanCount;
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class Session;
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/** Meters peaks on the input and stores them for access.
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*/
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class LIBARDOUR_API PeakMeter : public Processor
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{
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public:
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PeakMeter (Session& s, const std::string& name);
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~PeakMeter ();
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void reset ();
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void reset_max ();
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std::string display_name () const;
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bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
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bool configure_io (ChanCount in, ChanCount out);
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/* special method for meter, to ensure that it can always handle the maximum
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number of streams in the route, no matter where we put it.
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*/
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void set_max_channels (const ChanCount&);
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/* tell the meter than no matter how many channels it can handle,
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`in' is the number it is actually going be handling from
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now on.
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*/
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void reflect_inputs (const ChanCount& in);
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void emit_configuration_changed ();
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/** Compute peaks */
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void run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sample, double speed, pframes_t nframes, bool);
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void activate () {}
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void deactivate () {}
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ChanCount input_streams () const { return current_meters; }
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ChanCount output_streams () const { return current_meters; }
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float meter_level (uint32_t n, MeterType type);
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void set_meter_type (MeterType t);
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MeterType meter_type () const { return _meter_type; }
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PBD::Signal1<void, MeterType> MeterTypeChanged;
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protected:
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XMLNode& state () const;
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private:
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friend class IO;
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/** The number of meters that we are currently handling;
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* may be different to _configured_input and _configured_output
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* as it can be altered outside a \ref configure_io by \ref reflect_inputs .
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*/
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ChanCount current_meters;
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ChanCount _max_n_meters;
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GATOMIC_QUAL gint _reset_dpm;
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GATOMIC_QUAL gint _reset_max;
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uint32_t _bufcnt;
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std::vector<float> _peak_buffer; // internal, integrate
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std::vector<float> _peak_power; // includes accurate falloff, hence dB
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std::vector<float> _max_peak_signal; // dB calculation is done on demand
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std::vector<Kmeterdsp*> _kmeter;
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std::vector<Iec1ppmdsp*> _iec1meter;
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std::vector<Iec2ppmdsp*> _iec2meter;
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std::vector<Vumeterdsp*> _vumeter;
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MeterType _meter_type;
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};
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} // namespace ARDOUR
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#endif // __ardour_meter_h__
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