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#ifndef BIQUADFULLKILLEQEFFECT_H
#define BIQUADFULLKILLEQEFFECT_H

#include "control/controlproxy.h"
#include "effects/effect.h"
#include "effects/effectprocessor.h"
#include "engine/effects/engineeffect.h"
#include "engine/effects/engineeffectparameter.h"
#include "engine/filters/enginefilterbiquad1.h"
#include "engine/filters/enginefilterbessel4.h"
#include "effects/builtin/lvmixeqbase.h"
#include "engine/filters/enginefilterdelay.h"
#include "util/class.h"
#include "util/defs.h"
#include "util/sample.h"
#include "util/types.h"
#include "util/memory.h"
#include "util/samplebuffer.h"

class BiquadFullKillEQEffectGroupState : public EffectState {
  public:
    BiquadFullKillEQEffectGroupState(const mixxx::EngineParameters& bufferParameters);

    void setFilters(
            mixxx::audio::SampleRate sampleRate,
            double lowFreqCorner,
            double highFreqCorner);

    std::unique_ptr<EngineFilterBiquad1Peaking> m_lowBoost;
    std::unique_ptr<EngineFilterBiquad1Peaking> m_midBoost;
    std::unique_ptr<EngineFilterBiquad1Peaking> m_highBoost;
    std::unique_ptr<EngineFilterBiquad1LowShelving> m_lowKill;
    std::unique_ptr<EngineFilterBiquad1Peaking> m_midKill;
    std::unique_ptr<EngineFilterBiquad1HighShelving> m_highKill;
    std::unique_ptr<LVMixEQEffectGroupState<EngineFilterBessel4Low>> m_lvMixIso;

    mixxx::SampleBuffer m_pLowBuf;
    mixxx::SampleBuffer m_pBandBuf;
    mixxx::SampleBuffer m_pHighBuf;
    mixxx::SampleBuffer m_tempBuf;

    double m_oldLowBoost;
    double m_oldMidBoost;
    double m_oldHighBoost;
    double m_oldLowKill;
    double m_oldMidKill;
    double m_oldHighKill;
    double m_oldLow;
    double m_oldMid;
    double m_oldHigh;

    double m_loFreqCorner;
    double m_highFreqCorner;

    SINT m_rampHoldOff;
    SINT m_groupDelay;

    mixxx::audio::SampleRate m_oldSampleRate;
};

class BiquadFullKillEQEffect : public EffectProcessorImpl<BiquadFullKillEQEffectGroupState> {
  public:
    BiquadFullKillEQEffect(EngineEffect* pEffect);

    static QString getId();
    static EffectManifestPointer getManifest();

    void setFilters(
            mixxx::audio::SampleRate sampleRate,
            double lowFreqCorner,
            double highFreqCorner);

    void processChannel(const ChannelHandle& handle,
                        BiquadFullKillEQEffectGroupState* pState,
                        const CSAMPLE* pInput, CSAMPLE *pOutput,
                        const mixxx::EngineParameters& bufferParameters,
                        const EffectEnableState enableState,
                        const GroupFeatureState& groupFeatureState) override;

  private:
    BiquadFullKillEQEffect(const BiquadFullKillEQEffect&) = delete;
    void operator=(const BiquadFullKillEQEffect&) = delete;

    QString debugString() const {
        return getId();
    }

    EngineEffectParameter* m_pPotLow;
    EngineEffectParameter* m_pPotMid;
    EngineEffectParameter* m_pPotHigh;

    EngineEffectParameter* m_pKillLow;
    EngineEffectParameter* m_pKillMid;
    EngineEffectParameter* m_pKillHigh;

    std::unique_ptr<ControlProxy> m_pLoFreqCorner;
    std::unique_ptr<ControlProxy> m_pHiFreqCorner;
};

#endif // BIQUADFULLKILLEQEFFECT_H