87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
/*
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* Copyright (C) 2006, 2016 Paul Davis
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* Written by Sampo Savolainen & Robin Gareus
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __ardour_fft_result_h
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#define __ardour_fft_result_h
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#include <math.h>
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#include <fftw3.h>
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#include <gdkmm/color.h>
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#include <string>
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class FFTGraph;
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class FFTResult
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{
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public:
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~FFTResult ();
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void analyzeWindow (float *window);
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void finalize ();
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unsigned int length () const { return _dataSize; }
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float avgAt (unsigned int x, bool p) const
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{ return p ? _data_prop_avg[x] : _data_flat_avg[x]; }
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float maxAt (unsigned int x, bool p) const
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{ return p ? _data_prop_max[x] : _data_flat_max[x]; }
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float minAt (unsigned int x, bool p) const
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{ return p ? _data_prop_min[x] : _data_flat_min[x]; }
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float minimum (bool p) const
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{ return p ? _min_prop : _min_flat; }
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float maximum (bool p) const
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{ return p ? _max_prop : _max_flat; }
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const Gdk::Color& get_color () const { return _color; }
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private:
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FFTResult (FFTGraph *graph, Gdk::Color color, std::string trackname);
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friend class FFTGraph;
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int _averages;
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float* _data_flat_avg;
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float* _data_flat_max;
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float* _data_flat_min;
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float* _data_prop_avg;
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float* _data_prop_max;
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float* _data_prop_min;
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unsigned int _windowSize;
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unsigned int _dataSize;
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float _min_flat;
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float _max_flat;
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float _min_prop;
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float _max_prop;
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FFTGraph *_graph;
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Gdk::Color _color;
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std::string _trackname;
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static float power_to_db (float v) { return v > 1e-20 ? 10.0f * log10f (v) : -200.0f; }
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};
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#endif /* __ardour_fft_result_h */
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