143 lines
3.7 KiB
C++
143 lines
3.7 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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Wahwah
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Effect programming:
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Nasca Octavian Paul (Paul Nasca)
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UI programming:
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Dominic Mazzoni (with the help of wxDesigner)
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Vaughan Johnson (Preview)
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**********************************************************************/
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#ifndef __AUDACITY_EFFECT_WAHWAH__
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#define __AUDACITY_EFFECT_WAHWAH__
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#include "Effect.h"
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class wxSlider;
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class wxTextCtrl;
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class ShuttleGui;
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class EffectWahwahState
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{
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public:
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float samplerate;
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double depth;
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double freqofs;
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double phase;
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double outgain;
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double lfoskip;
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unsigned long skipcount;
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double xn1, xn2, yn1, yn2;
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double b0, b1, b2, a0, a1, a2;
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};
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class EffectWahwah final : public Effect
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{
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public:
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static const ComponentInterfaceSymbol Symbol;
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EffectWahwah();
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virtual ~EffectWahwah();
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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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private:
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// EffectWahwah implementation
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void InstanceInit(EffectWahwahState & data, float sampleRate);
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size_t InstanceProcess(EffectWahwahState & data, float **inBlock, float **outBlock, size_t blockLen);
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void OnFreqSlider(wxCommandEvent & evt);
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void OnPhaseSlider(wxCommandEvent & evt);
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void OnDepthSlider(wxCommandEvent & evt);
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void OnResonanceSlider(wxCommandEvent & evt);
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void OnFreqOffSlider(wxCommandEvent & evt);
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void OnGainSlider(wxCommandEvent & evt);
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void OnFreqText(wxCommandEvent & evt);
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void OnPhaseText(wxCommandEvent & evt);
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void OnDepthText(wxCommandEvent & evt);
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void OnResonanceText(wxCommandEvent & evt);
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void OnFreqOffText(wxCommandEvent & evt);
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void OnGainText(wxCommandEvent & evt);
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private:
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EffectWahwahState mMaster;
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std::vector<EffectWahwahState> mSlaves;
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/* Parameters:
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mFreq - LFO frequency
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mPhase - LFO startphase in RADIANS - useful for stereo WahWah
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mDepth - Wah depth
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mRes - Resonance
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mFreqOfs - Wah frequency offset
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mOutGain - output gain
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!!!!!!!!!!!!! IMPORTANT!!!!!!!!! :
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mDepth and mFreqOfs should be from 0(min) to 1(max) !
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mRes should be greater than 0 ! */
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double mFreq;
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double mPhase;
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int mDepth;
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double mRes;
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int mFreqOfs;
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double mOutGain;
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wxTextCtrl *mFreqT;
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wxTextCtrl *mPhaseT;
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wxTextCtrl *mDepthT;
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wxTextCtrl *mResT;
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wxTextCtrl *mFreqOfsT;
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wxTextCtrl *mOutGainT;
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wxSlider *mFreqS;
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wxSlider *mPhaseS;
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wxSlider *mDepthS;
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wxSlider *mResS;
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wxSlider *mFreqOfsS;
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wxSlider *mOutGainS;
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DECLARE_EVENT_TABLE()
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};
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#endif
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