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/**
bespoke synth, a software modular synthesizer
Copyright (C) 2021 Ryan Challinor (contact: awwbees@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 3 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, see <http://www.gnu.org/licenses/>.
**/
/*
==============================================================================
EQModule.h
Created: 2 Nov 2020 10:47:16pm
Author: Ryan Challinor
==============================================================================
*/
#pragma once
#include "IAudioProcessor.h"
#include "IDrawableModule.h"
#include "Slider.h"
#include "FFT.h"
#include "RollingBuffer.h"
#include "BiquadFilter.h"
#include "DropdownList.h"
class EQModule : public IAudioProcessor, public IDrawableModule, public IFloatSliderListener, public IDropdownListener
{
public:
EQModule();
virtual ~EQModule();
static IDrawableModule* Create() { return new EQModule(); }
static bool AcceptsAudio() { return true; }
static bool AcceptsNotes() { return false; }
static bool AcceptsPulses() { return false; }
void CreateUIControls() override;
//IAudioSource
void Process(double time) override;
void SetEnabled(bool enabled) override { mEnabled = enabled; }
bool IsResizable() const override { return true; }
void Resize(float w, float h) override;
virtual void LoadLayout(const ofxJSONElement& moduleInfo) override;
virtual void SaveLayout(ofxJSONElement& moduleInfo) override;
virtual void SetUpFromSaveData() override;
void FloatSliderUpdated(FloatSlider* slider, float oldVal, double time) override;
void DropdownUpdated(DropdownList* list, int oldVal, double time) override;
void CheckboxUpdated(Checkbox* checkbox, double time) override;
bool IsEnabled() const override { return mEnabled; }
private:
//IDrawableModule
void DrawModule() override;
void GetModuleDimensions(float& w, float& h) override;
void OnClicked(float x, float y, bool right) override;
bool MouseMoved(float x, float y) override;
bool MouseScrolled(float x, float y, float scrollX, float scrollY, bool isSmoothScroll, bool isInvertedScroll) override;
void KeyPressed(int key, bool isRepeat) override;
void MouseReleased() override;
static const int kNumFFTBins = 1024 * 8;
static const int kBinIgnore = 2;
static const int kDrawYOffset = 100;
float FreqForBin(int bin) { return (float(bin) / kNumFFTBins) * gSampleRate; };
float PosForFreq(float freq) { return log2(freq / 20) / 10; };
float FreqForPos(float pos) { return 20.0 * std::pow(2.0, pos * 10); };
float PosForGain(float gain) { return .5f - gain / 30.0f; };
float GainForPos(float pos) { return (.5f - pos) * 30; }
float mWidth{ 825 };
float mHeight{ 255 };
float* mWindower{ nullptr };
float* mSmoother{ nullptr };
::FFT mFFT;
FFTData mFFTData;
RollingBuffer mRollingInputBuffer;
struct Filter
{
bool mEnabled{ false };
std::array<BiquadFilter, 2> mFilter;
Checkbox* mEnabledCheckbox{ nullptr };
DropdownList* mTypeSelector{ nullptr };
FloatSlider* mFSlider{ nullptr };
FloatSlider* mGSlider{ nullptr };
FloatSlider* mQSlider{ nullptr };
bool mNeedToCalculateCoefficients{ true };
bool UpdateCoefficientsIfNecessary();
};
std::array<Filter, 8> mFilters;
int mHoveredFilterHandleIndex{ -1 };
int mDragging{ false };
std::array<float, 1024> mFrequencyResponse{};
bool mNeedToUpdateFrequencyResponseGraph{ true };
float mDrawGain{ 1 };
bool mLiteCpuModulation{ true };
};
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