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/***************************************************************************
* Copyright (C) 2009 by Pere RÃ fols Soler *
* sapista2@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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef PLOT_BODE_CURVE_H
#define PLOT_BODE_CURVE_H
#include <iostream>
#include <gtkmm/drawingarea.h>
#include "filter.h"
#include "../eq_defines.h"
#define MIN_FREQ 18.0
#define MAX_FREQ 22000.0
#define MIN_SPAN_DEC 0.5
#define CURVE_NUM_OF_POINTS 1000
#define GRID_VERTICAL_LINES 28
#define CURVE_MARGIN 8
#define CURVE_BORDER 1.5
#define CURVE_TEXT_OFFSET_X 18
#define CURVE_TEXT_OFFSET_Y 38
#define ZOOM_WIDGET_BORDER_Y 22
#define PLOT_HIGHT 300
#define PLOT_WIDTH 500
#define SCROLL_EVENT_INCREMENT 0.3
#define AUTO_REFRESH_TIMEOUT_MS 20
#define SPECTROGRAM_LINE_THICKNESS 3.0
typedef struct
{
float Gain;
float Freq;
float Q;
bool bIsOn;
FilterType fType;
}FilterBandParams;
class PlotEQCurve : public Gtk::DrawingArea
{
public:
PlotEQCurve(int iNumOfBands, int channels);
virtual ~PlotEQCurve();
void resetCurve();
virtual void setBandGain(int bd_ix, float newGain);
virtual void setBandFreq(int bd_ix, float newFreq);
virtual void setBandQ(int bd_ix, float newQ);
virtual void setBandType(int bd_ix, int newType);
virtual void setBandEnable(int bd_ix, bool bIsEnabled);
virtual void setBypass(bool bypass);
virtual void setSampleRate(double samplerate);
virtual void setFftData(double *fft_data);
virtual void setFftActive(bool active, bool isSpectrogram);
virtual void setFftGain(double g);
virtual void setFftRange(double r);
virtual void setFftHold(bool hold);
virtual void setPlotdBRange(double range);
virtual void glowBand(int band);
virtual void unglowBands();
enum MSState { ML, DUAL, SR, MONO};
void setStereoState(int band, MSState state);
//signal accessor:
//Slot prototype: void on_band_changed(int band_ix, float Gain, float Freq, float Q);
typedef sigc::signal<void, int, float, float, float> signal_BandChanged;
signal_BandChanged signal_changed();
//Slot prototype: void on_band_enabled(int band_ix, bool enabled);
typedef sigc::signal<void, int, bool> signal_BandEnabled;
signal_BandEnabled signal_enabled();
//Slot prototype: void on_band_selected(int band_ix, bool enabled);
typedef sigc::signal<void, int> signal_BandSelected;
signal_BandSelected signal_selected();
//Slot prototype: void on_band_selected(int band_ix, bool enabled);
typedef sigc::signal<void> signal_BandUnselected;
signal_BandUnselected signal_unselected();
protected:
//Mouse grab signal handlers
virtual bool on_button_press_event(GdkEventButton* event);
virtual bool on_button_release_event(GdkEventButton* event);
virtual bool on_scrollwheel_event(GdkEventScroll* event);
virtual bool on_mouse_motion_event(GdkEventMotion* event);
virtual bool on_timeout_redraw();
virtual bool on_mouse_leave_widget(GdkEventCrossing* event);
virtual void cueBandRedraws(int band);
virtual void redraw_background_widget();
virtual void redraw_zoom_widget();
virtual void redraw_curve_widgets(int band);
virtual void redraw_main_curve();
virtual void redraw_grid_widget();
virtual void redraw_xAxis_widget();
virtual void redraw_yAxis_widget();
virtual void redraw_fft_widget();
virtual void redraw_cursor(double x, double y);
//Override default signal handler:
virtual bool on_expose_event(GdkEventExpose* event);
private:
int width, height;
int m_TotalBandsCount;
int m_NumChannels;
bool m_Bypass;
int m_iBandSel;
bool bMotionIsConnected;
bool bBandFocus;
bool *m_Bands2Redraw;
bool m_BandRedraw, m_fullRedraw, m_justRedraw;
double SampleRate;
bool m_FftActive;
double m_minFreq, m_maxFreq;
double m_dB_plot_range;
//To hadle mouse mouve events
sigc::connection m_motion_connection;
//Store filters data
FilterBandParams **m_filters; //This pointer is initialized by construcor to an array of total num of bands
//X axes LUT tables
int xPixels_Grid[GRID_VERTICAL_LINES]; //Pixels used to draw the grind in logspace
double *f; //This pointer is initialized by construcor to an array of total num of points acording min/max freq define
int *xPixels; //This pointer is initialized by construcor to an array of total num of points, each item is the pixel space transaltion of corresponding freq
//Curve vector for Y axes in dB units
double **main_y; //This pointer is initialized by construcor to an array of total num of points acording the format main_y[channel][num_points]
double **band_y; //This pointer is initialized by construcor to an array acording the format band_y[bd_ix][num_points]
MSState *band_state; //A vector containing the Stereo states for each band
//FFT vectors
double *xPixels_fft, *xPixels_fft_bins;
double *fft_pink_noise;
double *fft_plot;
double *fft_ant_data;
double fft_gain;
double fft_range;
float *fft_log_lut;
bool m_bIsSpectrogram, m_bFftHold;
double *fft_raw_data;
//Zoom widget data
struct zoom_widget
{
bool center_focus;
bool f1_focus;
bool f2_focus;
double x1;
double x2;
double x_ant;
bool center_press;
bool f1_press;
bool f2_press;
} m_zoom_widget;
//Cairo surfaces
Cairo::RefPtr<Cairo::ImageSurface> m_background_surface_ptr, m_fft_surface_ptr, m_zoom_surface_ptr, *m_curve_surface_ptr, m_maincurve_surface_ptr, m_grid_surface_ptr, m_xAxis_surface_ptr, m_yAxis_surface_ptr, m_cursor_surface_ptr;
//Bode change signal
signal_BandChanged m_BandChangedSignal;
signal_BandEnabled m_BandEnabledSignal;
signal_BandSelected m_BandSelectedSignal;
signal_BandUnselected m_BandUnselectedSignal;
//Function for dB to pixels convertion
double dB2Pixels(double db);
//Function for Hz to pixels convertion
double freq2Pixels(double f);
//Function for pixels to dB convertion
double Pixels2dB(double pixels);
//Function for pixels to Hz convertion
double Pixels2freq(double pixels);
//Compute a filter points
void ComputeFilter(int bd_ix);
//Curve math functions
void CalcBand_DigitalFilter(int bd_ix);
//Compute zoom bar
virtual void setCenterSpan(double center, double span);
virtual void resetCenterSpan();
virtual void setCenter(double center);
virtual void setSpan(double span);
void recomputeMinFreq_fromX1Pixel(double x1);
void recomputeMaxFreq_fromX2Pixel(double x2);
void recomputeCenterFreq(double xDiff);
};
#endif
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