150 lines
4.1 KiB
C++
150 lines
4.1 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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Phaser
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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_PHASER__
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#define __AUDACITY_EFFECT_PHASER__
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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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#define NUM_STAGES 24
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class EffectPhaserState
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{
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public:
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// state variables
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float samplerate;
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sampleCount skipcount;
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double old[NUM_STAGES]; // must be as large as MAX_STAGES
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double gain;
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double fbout;
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double outgain;
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double lfoskip;
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double phase;
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int laststages;
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};
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class EffectPhaser final : public Effect
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{
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public:
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static const ComponentInterfaceSymbol Symbol;
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EffectPhaser();
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virtual ~EffectPhaser();
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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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// EffectPhaser implementation
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void InstanceInit(EffectPhaserState & data, float sampleRate);
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size_t InstanceProcess(EffectPhaserState & data, float **inBlock, float **outBlock, size_t blockLen);
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void OnStagesSlider(wxCommandEvent & evt);
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void OnDryWetSlider(wxCommandEvent & evt);
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void OnFeedbackSlider(wxCommandEvent & evt);
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void OnDepthSlider(wxCommandEvent & evt);
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void OnPhaseSlider(wxCommandEvent & evt);
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void OnFreqSlider(wxCommandEvent & evt);
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void OnGainSlider(wxCommandEvent & evt);
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void OnStagesText(wxCommandEvent & evt);
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void OnDryWetText(wxCommandEvent & evt);
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void OnFeedbackText(wxCommandEvent & evt);
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void OnDepthText(wxCommandEvent & evt);
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void OnPhaseText(wxCommandEvent & evt);
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void OnFreqText(wxCommandEvent & evt);
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void OnGainText(wxCommandEvent & evt);
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/*
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Phaser Parameters
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mFreq - Phaser's LFO frequency
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mPhase - Phaser's LFO startphase (radians), needed for stereo Phasers
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mDepth - Phaser depth (0 - no depth, 255 - max depth)
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mStages - Phaser stages (recomanded from 2 to 16-24, and EVEN NUMBER)
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mDryWet - Dry/wet mix, (0 - dry, 128 - dry=wet, 255 - wet)
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mFeedback - Phaser FeedBack (0 - no feedback, 100 = 100% Feedback,
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-100 = -100% FeedBack)
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*/
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private:
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EffectPhaserState mMaster;
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std::vector<EffectPhaserState> mSlaves;
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// parameters
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int mStages;
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int mDryWet;
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double mFreq;
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double mPhase;
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int mDepth;
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int mFeedback;
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double mOutGain;
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wxTextCtrl *mStagesT;
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wxTextCtrl *mDryWetT;
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wxTextCtrl *mFreqT;
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wxTextCtrl *mPhaseT;
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wxTextCtrl *mDepthT;
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wxTextCtrl *mFeedbackT;
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wxTextCtrl *mOutGainT;
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wxSlider *mStagesS;
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wxSlider *mDryWetS;
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wxSlider *mFreqS;
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wxSlider *mPhaseS;
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wxSlider *mDepthS;
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wxSlider *mFeedbackS;
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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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