src/visualizer.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2014 by Andrzej Rybczak                            *
   3  *   electricityispower@gmail.com                                          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  19  ***************************************************************************/
  20
  21 #ifndef NCMPCPP_VISUALIZER_H
  22 #define NCMPCPP_VISUALIZER_H
  23
  24 #include "config.h"
  25
  26 #ifdef ENABLE_VISUALIZER
  27
  28 #include <boost/date_time/posix_time/posix_time_types.hpp>
  29 #include "interfaces.h"
  30 #include "screen.h"
  31 #include "window.h"
  32
  33 #ifdef HAVE_FFTW3_H
  34 # include <fftw3.h>
  35 #endif
  36
  37 struct Visualizer: Screen<NC::Window>, Tabbable
  38 {
  39         Visualizer();
  40
  41         virtual void switchTo() OVERRIDE;
  42         virtual void resize() OVERRIDE;
  43
  44         virtual std::wstring title() OVERRIDE;
  45         virtual ScreenType type() OVERRIDE { return ScreenType::Visualizer; }
  46
  47         virtual void update() OVERRIDE;
  48         virtual void scroll(NC::Scroll) OVERRIDE { }
  49
  50         virtual int windowTimeout() OVERRIDE;
  51
  52         virtual void enterPressed() OVERRIDE { }
  53         virtual void spacePressed() OVERRIDE;
  54         virtual void mouseButtonPressed(MEVENT) OVERRIDE { }
  55
  56         virtual bool isMergable() OVERRIDE { return true; }
  57
  58         // private members
  59         void SetFD();
  60         void ResetFD();
  61         void FindOutputID();
  62
  63 protected:
  64         virtual bool isLockable() OVERRIDE { return true; }
  65
  66 private:
  67         void DrawSoundWave(int16_t *, ssize_t, size_t, size_t);
  68 #       ifdef HAVE_FFTW3_H
  69         void DrawFrequencySpectrum(int16_t *, ssize_t, size_t, size_t);
  70 #       endif // HAVE_FFTW3_H
  71
  72         int m_output_id;
  73         boost::posix_time::ptime m_timer;
  74
  75         int m_fifo;
  76         unsigned m_samples;
  77 #       ifdef HAVE_FFTW3_H
  78         unsigned m_fftw_results;
  79         unsigned *m_freq_magnitudes;
  80         double *m_fftw_input;
  81         fftw_complex *m_fftw_output;
  82         fftw_plan m_fftw_plan;
  83 #       endif // HAVE_FFTW3_H
  84 };
  85
  86 extern Visualizer *myVisualizer;
  87
  88 #endif // ENABLE_VISUALIZER
  89
  90 #endif // NCMPCPP_VISUALIZER_H
  91