125 lines
3.6 KiB
C++
125 lines
3.6 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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Audacity(R) is copyright (c) 1999-2016 Audacity Team.
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License: GPL v2. See License.txt.
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BassTreble.h (two shelf filters)
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Steve Daulton
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**********************************************************************/
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#ifndef __AUDACITY_EFFECT_BASS_TREBLE__
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#define __AUDACITY_EFFECT_BASS_TREBLE__
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#include "Effect.h"
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class wxSlider;
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class wxCheckBox;
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class wxTextCtrl;
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class ShuttleGui;
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class EffectBassTrebleState
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{
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public:
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float samplerate;
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double treble;
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double bass;
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double gain;
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double slope, hzBass, hzTreble;
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double a0Bass, a1Bass, a2Bass, b0Bass, b1Bass, b2Bass;
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double a0Treble, a1Treble, a2Treble, b0Treble, b1Treble, b2Treble;
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double xn1Bass, xn2Bass, yn1Bass, yn2Bass;
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double xn1Treble, xn2Treble, yn1Treble, yn2Treble;
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};
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class EffectBassTreble final : public Effect
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{
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public:
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static const ComponentInterfaceSymbol Symbol;
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EffectBassTreble();
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virtual ~EffectBassTreble();
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// ComponentInterface implementation
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ComponentInterfaceSymbol GetSymbol() override;
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TranslatableString GetDescription() override;
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ManualPageID ManualPage() override;
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// EffectDefinitionInterface implementation
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EffectType GetType() override;
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bool SupportsRealtime() override;
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// EffectClientInterface implementation
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unsigned GetAudioInCount() override;
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unsigned GetAudioOutCount() override;
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bool ProcessInitialize(sampleCount totalLen, ChannelNames chanMap = NULL) override;
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size_t ProcessBlock(float **inBlock, float **outBlock, size_t blockLen) override;
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bool RealtimeInitialize() override;
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bool RealtimeAddProcessor(unsigned numChannels, float sampleRate) override;
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bool RealtimeFinalize() override;
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size_t RealtimeProcess(int group,
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float **inbuf,
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float **outbuf,
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size_t numSamples) override;
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bool DefineParams( ShuttleParams & S ) override;
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bool GetAutomationParameters(CommandParameters & parms) override;
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bool SetAutomationParameters(CommandParameters & parms) override;
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// Effect Implementation
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void PopulateOrExchange(ShuttleGui & S) override;
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bool TransferDataToWindow() override;
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bool TransferDataFromWindow() override;
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bool CheckWhetherSkipEffect() override;
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private:
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// EffectBassTreble implementation
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void InstanceInit(EffectBassTrebleState & data, float sampleRate);
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size_t InstanceProcess(EffectBassTrebleState & data, float **inBlock, float **outBlock, size_t blockLen);
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void Coefficients(double hz, double slope, double gain, double samplerate, int type,
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double& a0, double& a1, double& a2, double& b0, double& b1, double& b2);
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float DoFilter(EffectBassTrebleState & data, float in);
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void OnBassText(wxCommandEvent & evt);
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void OnTrebleText(wxCommandEvent & evt);
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void OnGainText(wxCommandEvent & evt);
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void OnBassSlider(wxCommandEvent & evt);
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void OnTrebleSlider(wxCommandEvent & evt);
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void OnGainSlider(wxCommandEvent & evt);
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void OnLinkCheckbox(wxCommandEvent & evt);
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// Auto-adjust gain to reduce variation in peak level
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void UpdateGain(double oldVal, int control );
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private:
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EffectBassTrebleState mMaster;
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std::vector<EffectBassTrebleState> mSlaves;
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double mBass;
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double mTreble;
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double mGain;
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bool mLink;
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wxSlider *mBassS;
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wxSlider *mTrebleS;
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wxSlider *mGainS;
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wxTextCtrl *mBassT;
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wxTextCtrl *mTrebleT;
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wxTextCtrl *mGainT;
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wxCheckBox *mLinkCheckBox;
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DECLARE_EVENT_TABLE()
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};
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#endif
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