/*
- Copyright (C) 2006 Paul Davis
- Written by Sampo Savolainen
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-*/
+ * Copyright (C) 2006, 2016 Paul Davis
+ * Written by Sampo Savolainen & Robin Gareus
+ *
+ * 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_fft_result_h
#define __ardour_fft_result_h
-#include <ardour/types.h>
+#include <math.h>
#include <fftw3.h>
#include <gdkmm/color.h>
class FFTResult
{
- public:
-
- ~FFTResult();
-
- void analyzeWindow(float *window);
- void finalize();
-
- const int length() { return _dataSize; }
-
- float sampleAt(int x);
-
- const float minimum() { return _minimum; }
- const float maximum() { return _maximum; }
-
- const Gdk::Color get_color() { return _color; }
-
- private:
- FFTResult(FFTGraph *graph, Gdk::Color color, std::string trackname);
-
- int _averages;
-
- float* _data;
- float* _work;
-
- int _windowSize;
- int _dataSize;
-
- float _minimum;
- float _maximum;
-
- FFTGraph *_graph;
-
- Gdk::Color _color;
- std::string _trackname;
-
+public:
+
+ ~FFTResult ();
+
+ void analyzeWindow (float *window);
+ void finalize ();
+
+ unsigned int length () const { return _dataSize; }
+
+ float avgAt (unsigned int x, bool p) const
+ { return p ? _data_prop_avg[x] : _data_flat_avg[x]; }
+ float maxAt (unsigned int x, bool p) const
+ { return p ? _data_prop_max[x] : _data_flat_max[x]; }
+ float minAt (unsigned int x, bool p) const
+ { return p ? _data_prop_min[x] : _data_flat_min[x]; }
+
+ float minimum (bool p) const
+ { return p ? _min_prop : _min_flat; }
+ float maximum (bool p) const
+ { return p ? _max_prop : _max_flat; }
+
+ const Gdk::Color& get_color () const { return _color; }
+
+private:
+ FFTResult (FFTGraph *graph, Gdk::Color color, std::string trackname);
friend class FFTGraph;
+
+ int _averages;
+
+ float* _data_flat_avg;
+ float* _data_flat_max;
+ float* _data_flat_min;
+ float* _data_prop_avg;
+ float* _data_prop_max;
+ float* _data_prop_min;
+
+ unsigned int _windowSize;
+ unsigned int _dataSize;
+
+ float _min_flat;
+ float _max_flat;
+ float _min_prop;
+ float _max_prop;
+
+ FFTGraph *_graph;
+
+ Gdk::Color _color;
+ std::string _trackname;
+
+ static float power_to_db (float v) { return v > 1e-20 ? 10.0f * log10f (v) : -200.0f; }
};
#endif /* __ardour_fft_result_h */