ChangeTempoBase.h

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#pragma once
 
#include "SettingsVisitor.h"
#include "SoundTouchBase.h"
 
class BUILTIN_EFFECTS_API ChangeTempoBase : public SoundTouchBase
{
public:
   static inline ChangeTempoBase*
   FetchParameters(ChangeTempoBase& e, EffectSettings&)
   {
      return &e;
   }
   static const ComponentInterfaceSymbol Symbol;
 
   ChangeTempoBase();
   virtual ~ChangeTempoBase();
 
   // ComponentInterface implementation
 
   ComponentInterfaceSymbol GetSymbol() const override;
   TranslatableString GetDescription() const override;
   ManualPageID ManualPage() const override;
 
   // EffectDefinitionInterface implementation
 
   EffectType GetType() const override;
   bool SupportsAutomation() const override;
 
   // Effect implementation
 
   bool Init() override;
   bool CheckWhetherSkipEffect(const EffectSettings& settings) const override;
   bool Process(EffectInstance& instance, EffectSettings& settings) override;
   double CalcPreviewInputLength(
      const EffectSettings& settings, double previewLength) const override;
 
protected:
   const EffectParameterMethods& Parameters() const override;
 
   bool mUseSBSMS;
   double m_PercentChange; // percent change to apply to tempo
                           // -100% is meaningless, but sky's the upper limit
   double m_FromBPM;       // user-set beats-per-minute. Zero means not yet set.
   double m_ToBPM;         // Zero value means not yet set.
   double m_FromLength;    // starting length of selection
   double m_ToLength;      // target length of selection
 
   bool m_bLoopDetect;
 
   static constexpr EffectParameter Percentage {
      &ChangeTempoBase::m_PercentChange, L"Percentage", 0.0, -95.0, 3000.0, 1
   };
   static constexpr EffectParameter UseSBSMS {
      &ChangeTempoBase::mUseSBSMS, L"SBSMS", false, false, true, 1
   };
};