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/***************************************************************************
* Copyright (C) 2008-2009 by Andrzej Rybczak *
* electricityispower@gmail.com *
* *
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef _VISUALIZER_H
#define _VISUALIZER_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef ENABLE_VISUALIZER
#include "window.h"
#include "screen.h"
#include <fftw3.h>
class Visualizer : public Screen<Window>
{
public:
virtual void SwitchTo();
virtual void Resize();
virtual std::basic_string<my_char_t> Title();
virtual void Update();
virtual void Scroll(Where, const int *) { }
virtual void EnterPressed() { }
virtual void SpacePressed();
virtual void MouseButtonPressed(MEVENT) { }
virtual NCurses::List *GetList() { return 0; }
virtual bool allowsSelection() { return false; }
void SetFD();
void ResetFD();
protected:
virtual void Init();
private:
void DrawSoundWave(int16_t *, ssize_t);
void DrawFrequencySpectrum(int16_t *, ssize_t);
int itsFifo;
unsigned *itsFreqsMagnitude;
double *itsInput;
fftw_complex *itsOutput;
fftw_plan itsPlan;
static const unsigned Samples;
static const unsigned FFTResults;
};
extern Visualizer *myVisualizer;
#endif // ENABLE_VISUALIZER
#endif
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