TwoPassSimpleMono.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  TwoPassSimpleMono.h
 
  Dominic Mazzoni
 
  This bit by Martyn Shaw.
 
**********************************************************************/
#ifndef __AUDACITY_EFFECT_TWOPASSSIMPLEMONO__
#define __AUDACITY_EFFECT_TWOPASSSIMPLEMONO__
 
#include "StatefulEffect.h"
 
class WaveChannel;
 
class BUILTIN_EFFECTS_API EffectTwoPassSimpleMono /* not final */
   : public StatefulEffect
{
public:
   ~EffectTwoPassSimpleMono() override;
 
   // Effect implementation
 
   bool Process(EffectInstance &instance, EffectSettings &settings) override;
 
protected:
   // EffectTwoPassSimpleMono implementation
 
   virtual bool InitPass1();
   virtual bool InitPass2();
 
   // new virtuals
 
   virtual bool NewTrackPass1();
   virtual bool NewTrackPass2();
 
   virtual bool ProcessPass1
      (float * WXUNUSED(buffer), size_t WXUNUSED(len))
   { return false; }
 
   virtual bool ProcessPass2
      (float * WXUNUSED(buffer), size_t WXUNUSED(len))
   { return false; }
 
 
   virtual bool TwoBufferProcessPass1(float *buffer1, size_t len1,
       [[maybe_unused]] float *buffer2,
       [[maybe_unused]] size_t len2)
   {
      if (buffer1)
         return ProcessPass1(buffer1, len1);
      else return true;
   }
   virtual bool TwoBufferProcessPass2(float *buffer1, size_t len1,
      [[maybe_unused]] float * buffer2,
      [[maybe_unused]] size_t len2)
   {
      if(buffer1)
         return ProcessPass2(buffer1, len1);
      else return true;
   }
 
   // End of new virtuals
 
 
   void DisableSecondPass() { mSecondPassDisabled = true; }
 
   // Other useful information
   int    mCurTrackNum;
   double mCurRate;
   double mCurT0;
   double mCurT1;
   int    mPass;
   bool   mSecondPassDisabled;
 
   std::shared_ptr<TrackList> mWorkTracks;
   TrackList *mTrackLists[2];
 
private:
   bool ProcessOne(WaveChannel &t, WaveChannel &outTrack,
      sampleCount start, sampleCount end);
   bool ProcessPass(EffectSettings &settings);
};
 
#endif