65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
#pragma once
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#include "IAudioEffect.h"
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#include <vector>
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namespace XCEngine {
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namespace Audio {
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class Equalizer : public IAudioEffect {
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public:
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Equalizer();
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~Equalizer() override;
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void ProcessAudio(float* buffer, uint32 frameCount, uint32 channels) override;
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void SetBandCount(uint32 count);
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uint32 GetBandCount() const { return m_bandCount; }
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void SetBandFrequency(uint32 band, float frequency);
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float GetBandFrequency(uint32 band) const;
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void SetBandGain(uint32 band, float gainDb);
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float GetBandGain(uint32 band) const;
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void SetBandQ(uint32 band, float q);
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float GetBandQ(uint32 band) const;
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void SetEnabled(bool enabled) override;
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bool IsEnabled() const override { return m_enabled; }
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void SetWetMix(float wetMix) override;
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float GetWetMix() const override { return m_wetMix; }
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void SetSampleRate(uint32 sampleRate) override;
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void ResetState() override;
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private:
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void EnsureStateCapacity(uint32 channels);
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void ComputeCoefficients(uint32 band, float frequency, float q, float gainDb);
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private:
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uint32 m_bandCount = 0;
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std::vector<float> m_frequencies;
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std::vector<float> m_gains;
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std::vector<float> m_qs;
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std::vector<float> m_a0;
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std::vector<float> m_a1;
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std::vector<float> m_a2;
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std::vector<float> m_b1;
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std::vector<float> m_b2;
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struct BandState {
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float x1 = 0.0f;
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float x2 = 0.0f;
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float y1 = 0.0f;
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float y2 = 0.0f;
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};
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std::vector<BandState> m_bandStates;
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uint32 m_stateChannels = 0;
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};
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} // namespace Audio
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} // namespace XCEngine
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