93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/***************************************************************************
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* Copyright (C) 2008-2009 by Andrzej Rybczak *
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* electricityispower@gmail.com *
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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 *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#ifndef _VISUALIZER_H
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#define _VISUALIZER_H
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef ENABLE_VISUALIZER
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#include "window.h"
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#include "screen.h"
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#ifdef HAVE_FFTW3_H
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# include <fftw3.h>
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#endif
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class Visualizer : public Screen<Window>
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{
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public:
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virtual void SwitchTo();
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virtual void Resize();
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virtual std::basic_string<my_char_t> Title();
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virtual void Update();
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virtual void Scroll(Where, const int *) { }
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virtual void EnterPressed() { }
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virtual void SpacePressed();
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virtual void MouseButtonPressed(MEVENT) { }
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virtual NCurses::List *GetList() { return 0; }
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virtual bool allowsSelection() { return false; }
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void SetFD();
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void ResetFD();
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void FindOutputID();
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protected:
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virtual void Init();
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private:
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void DrawSoundWave(int16_t *, ssize_t);
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# ifdef HAVE_FFTW3_H
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void DrawFrequencySpectrum(int16_t *, ssize_t);
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# endif // HAVE_FFTW3_H
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int itsOutputID;
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timeval itsTimer;
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int itsFifo;
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# ifdef HAVE_FFTW3_H
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unsigned *itsFreqsMagnitude;
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double *itsInput;
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fftw_complex *itsOutput;
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fftw_plan itsPlan;
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# endif // HAVE_FFTW3_H
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static const unsigned Samples;
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# ifdef HAVE_FFTW3_H
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static const unsigned FFTResults;
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# endif // HAVE_FFTW3_H
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};
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extern Visualizer *myVisualizer;
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#endif // ENABLE_VISUALIZER
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#endif
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