Echo.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  Echo.h
 
  Dominic Mazzoni
  Vaughan Johnson (dialog)
 
**********************************************************************/
 
#ifndef __AUDACITY_EFFECT_ECHO__
#define __AUDACITY_EFFECT_ECHO__
 
#include "Effect.h"
 
class ShuttleGui;
 
using Floats = ArrayOf<float>;
 
class EffectEcho final : public Effect
{
public:
   static const ComponentInterfaceSymbol Symbol;
 
   EffectEcho();
   virtual ~EffectEcho();
 
   // ComponentInterface implementation
 
   ComponentInterfaceSymbol GetSymbol() override;
   TranslatableString GetDescription() override;
   ManualPageID ManualPage() override;
 
   // EffectDefinitionInterface implementation
 
   EffectType GetType() override;
   bool GetAutomationParameters(CommandParameters & parms) override;
   bool SetAutomationParameters(CommandParameters & parms) override;
 
   // EffectProcessor implementation
 
   unsigned GetAudioInCount() override;
   unsigned GetAudioOutCount() override;
   bool ProcessInitialize(sampleCount totalLen, ChannelNames chanMap = NULL) override;
   bool ProcessFinalize() override;
   size_t ProcessBlock(float **inBlock, float **outBlock, size_t blockLen) override;
   bool DefineParams( ShuttleParams & S ) override;
 
   // Effect implementation
   void PopulateOrExchange(ShuttleGui & S) override;
   bool TransferDataToWindow() override;
   bool TransferDataFromWindow() override;
 
private:
   // EffectEcho implementation
 
private:
   double delay;
   double decay;
   Floats history;
   size_t histPos;
   size_t histLen;
};
 
#endif // __AUDACITY_EFFECT_ECHO__