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/***************************************************************************
* Copyright (C) 2008-2012 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
#include "config.h"
#ifdef ENABLE_VISUALIZER
#include "window.h"
#include "screen.h"
#ifdef HAVE_FFTW3_H
# include <fftw3.h>
#endif
struct Visualizer : public Screen<NC::Window *>
{
Visualizer();
virtual void switchTo() OVERRIDE;
virtual void resize() OVERRIDE;
virtual std::wstring title() OVERRIDE;
virtual void update() OVERRIDE;
virtual void scroll(NC::Where) OVERRIDE { }
virtual void enterPressed() OVERRIDE { }
virtual void spacePressed() OVERRIDE;
virtual void mouseButtonPressed(MEVENT) OVERRIDE { }
virtual bool isTabbable() OVERRIDE { return true; }
virtual bool isMergable() OVERRIDE { return true; }
// private members
void SetFD();
void ResetFD();
void FindOutputID();
static const int WindowTimeout;
protected:
virtual bool isLockable() OVERRIDE { return true; }
private:
void DrawSoundWave(int16_t *, ssize_t, size_t, size_t);
# ifdef HAVE_FFTW3_H
void DrawFrequencySpectrum(int16_t *, ssize_t, size_t, size_t);
# endif // HAVE_FFTW3_H
int itsOutputID;
timeval itsTimer;
int itsFifo;
unsigned itsSamples;
# ifdef HAVE_FFTW3_H
unsigned itsFFTResults;
unsigned *itsFreqsMagnitude;
double *itsInput;
fftw_complex *itsOutput;
fftw_plan itsPlan;
# endif // HAVE_FFTW3_H
};
extern Visualizer *myVisualizer;
#endif // ENABLE_VISUALIZER
#endif
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