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/*
* ZamEQ2 2 band parametric equaliser
* Copyright (C) 2014 Damien Zammit <damien@zamaudio.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.
*
* For a full copy of the GNU General Public License see the doc/GPL.txt file.
*/
#ifndef ZAMEQ2UI_HPP_INCLUDED
#define ZAMEQ2UI_HPP_INCLUDED
#include "DistrhoUI.hpp"
#include "ImageWidgets.hpp"
#include "../../widgets/ZamWidgets.hpp"
#include "ZamEQ2Artwork.hpp"
#include "ZamEQ2Plugin.hpp"
#define EQPOINTS 1000
#include <complex>
using DGL::Image;
using DGL::ZamKnob;
using DGL::ImageSlider;
START_NAMESPACE_DISTRHO
// -----------------------------------------------------------------------
class ZamEQ2UI : public UI,
public ZamKnob::Callback,
public ImageSlider::Callback
{
public:
ZamEQ2UI();
protected:
// -------------------------------------------------------------------
inline double
to_dB(double g) {
return (20.*log10(g));
}
inline double
from_dB(double gdb) {
return (exp(gdb/20.*log(10.)));
}
inline double
sanitize_denormal(double value) {
if (!std::isnormal(value)) {
return (0.);
}
return value;
}
float toIEC(float db) {
float def = 0.0f; /* Meter deflection %age */
if (db < -70.0f) {
def = 0.0f;
} else if (db < -60.0f) {
def = (db + 70.0f) * 0.25f;
} else if (db < -50.0f) {
def = (db + 60.0f) * 0.5f + 5.0f;
} else if (db < -40.0f) {
def = (db + 50.0f) * 0.75f + 7.5;
} else if (db < -30.0f) {
def = (db + 40.0f) * 1.5f + 15.0f;
} else if (db < -20.0f) {
def = (db + 30.0f) * 2.0f + 30.0f;
} else if (db < 0.0f) {
def = (db + 20.0f) * 2.5f + 50.0f;
} else {
def = 100.0f;
}
return (def * 2.0f);
}
void calceqcurve(float x[], float y[]);
void peq(double G0, double G, double GB, double w0, double Dw,
double *a0, double *a1, double *a2,
double *b0, double *b1, double *b2, double *gn);
void lowshelfeq(double G0, double G, double GB,
double w0, double Dw, double q, double B[], double A[]);
void highshelfeq(double G0, double G, double GB,
double w0, double Dw, double q, double B[], double A[]);
// -------------------------------------------------------------------
// DSP Callbacks
void parameterChanged(uint32_t index, float value) override;
void programLoaded(uint32_t index) override;
// -------------------------------------------------------------------
// Widget Callbacks
void imageKnobDragStarted(ZamKnob* knob) override;
void imageKnobDragFinished(ZamKnob* knob) override;
void imageKnobValueChanged(ZamKnob* knob, float value) override;
void imageSliderDragStarted(ImageSlider* slider) override;
void imageSliderDragFinished(ImageSlider* slider) override;
void imageSliderValueChanged(ImageSlider* slider, float value) override;
void onDisplay() override;
private:
Image fImgBackground;
ScopedPointer<ZamKnob> fKnobGain1;
ScopedPointer<ZamKnob> fKnobQ1, fKnobFreq1, fKnobGain2;
ScopedPointer<ZamKnob> fKnobQ2, fKnobFreq2;
ScopedPointer<ZamKnob> fKnobGainL, fKnobFreqL;
ScopedPointer<ZamKnob> fKnobGainH, fKnobFreqH;
ScopedPointer<ImageSlider> fSliderMaster;
float eqx[EQPOINTS];
float eqy[EQPOINTS];
DGL::Rectangle<int> fCanvasArea;
double a0x,a1x,a2x,b0x,b1x,b2x,gainx;
double a0y,a1y,a2y,b0y,b1y,b2y,gainy;
double Bl[3];
double Al[3];
double Bh[3];
double Ah[3];
};
// -----------------------------------------------------------------------
END_NAMESPACE_DISTRHO
#endif // ZAMEQ2UI_HPP_INCLUDED
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