9c5b5a3957
- Real-time FFT spectrum analyzer drawn behind EQ curves - Makeup gain knob (+/- 24 dB) after limiter - Draggable signal chain panel: reorder Master Gain / Limiter / Makeup Gain - Chain order saved/restored with DAW session - Scaled fonts in signal chain panel Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
96 sor
3.4 KiB
C++
96 sor
3.4 KiB
C++
#pragma once
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#include <JuceHeader.h>
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#include "EQBand.h"
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#include "FIREngine.h"
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class InstaLPEQProcessor : public juce::AudioProcessor
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{
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public:
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static constexpr int maxBands = 8;
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InstaLPEQProcessor();
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~InstaLPEQProcessor() override;
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void prepareToPlay (double sampleRate, int samplesPerBlock) override;
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void releaseResources() override;
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void processBlock (juce::AudioBuffer<float>&, juce::MidiBuffer&) override;
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juce::AudioProcessorEditor* createEditor() override;
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bool hasEditor() const override { return true; }
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const juce::String getName() const override { return JucePlugin_Name; }
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bool acceptsMidi() const override { return false; }
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bool producesMidi() const override { return false; }
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bool isBusesLayoutSupported (const BusesLayout& layouts) const override;
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double getTailLengthSeconds() const override { return 0.0; }
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int getNumPrograms() override { return 1; }
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int getCurrentProgram() override { return 0; }
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void setCurrentProgram (int) override {}
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const juce::String getProgramName (int) override { return {}; }
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void changeProgramName (int, const juce::String&) override {}
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void getStateInformation (juce::MemoryBlock& destData) override;
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void setStateInformation (const void* data, int sizeInBytes) override;
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// Band management (called from GUI thread)
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std::vector<EQBand> getBands() const;
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void setBand (int index, const EQBand& band);
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void addBand (float freq, float gainDb);
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void removeBand (int index);
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int getNumBands() const;
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// Signal chain stages
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enum ChainStage { MasterGain = 0, Limiter, MakeupGain, NumStages };
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static constexpr int numChainStages = (int) NumStages;
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// Settings
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std::atomic<bool> bypassed { false };
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std::atomic<float> masterGainDb { 0.0f };
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std::atomic<bool> limiterEnabled { true };
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std::atomic<float> makeupGainDb { 0.0f }; // -24 to +24 dB
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// Chain order (read/write from GUI, read from audio thread)
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std::array<ChainStage, numChainStages> getChainOrder() const;
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void setChainOrder (const std::array<ChainStage, numChainStages>& order);
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void setQuality (int fftOrder);
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FIREngine& getFIREngine() { return firEngine; }
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double getCurrentSampleRate() const { return currentSampleRate; }
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private:
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std::vector<EQBand> bands;
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juce::SpinLock bandLock;
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FIREngine firEngine;
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juce::dsp::Convolution convolution;
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juce::dsp::Limiter<float> limiter;
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// Spectrum analyzer
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static constexpr int spectrumFFTOrder = 11; // 2048-point FFT
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static constexpr int spectrumFFTSize = 1 << spectrumFFTOrder;
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juce::dsp::FFT spectrumFFT { spectrumFFTOrder };
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juce::dsp::WindowingFunction<float> spectrumWindow { spectrumFFTSize, juce::dsp::WindowingFunction<float>::hann };
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std::array<float, spectrumFFTSize> fifoBuffer {};
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int fifoIndex = 0;
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std::array<float, spectrumFFTSize * 2> fftData {};
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std::array<float, spectrumFFTSize / 2> spectrumMagnitude {};
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juce::SpinLock spectrumLock;
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std::atomic<bool> spectrumReady { false };
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public:
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bool getSpectrum (float* dest, int maxBins) const;
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double currentSampleRate = 44100.0;
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int currentBlockSize = 512;
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bool firLoaded = false;
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std::array<ChainStage, numChainStages> chainOrder { MasterGain, Limiter, MakeupGain };
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juce::SpinLock chainLock;
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void updateFIR();
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (InstaLPEQProcessor)
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};
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