QuickFilter.h

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#ifndef QuickFilter_h
#define QuickFilter_h
 
/* SPDX-License-Identifier: CC0-1.0 */
#include "SpecialPixel.h"
 
namespace Isis {
  class QuickFilter {
    private:
      double *p_sums;    
      double *p_sumsqrs; 
      int *p_counts;     
      int p_ns;          
      double p_minimum;    
      double p_maximum;    
      int p_minimumPixels; 
      int p_width;         
      int p_halfWidth;     
      int p_height;        
      int p_halfHeight;    
      double p_lastSum;     
      double p_lastSumsqr;  
      int p_lastCount;      
      int p_lastIndex;      
      int p_linesAdded;     
      void Compute(const int index);
 
    public:
      QuickFilter(const int ns, const int width, const int height);
      ~QuickFilter();
 
      double Average(const int index);
      double Variance(const int index);
      int Count(const int index);
 
      int Width() const;
      int HalfWidth() const;
      int Height() const;
      int HalfHeight() const;
      int Samples() const;
 
      double Low() const;
      double High() const;
      int MinimumPixels() const;
 
      void AddLine(const double *buf);
      void RemoveLine(const double *buf);
      void Reset();
 
      void SetMinMax(const double minimum, const double maximum);
      void SetMinimumPixels(const int minimumValid);
 
  };
};
 
#endif