Buffer.h

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#ifndef Buffer_h
#define Buffer_h

#include "iException.h"
#include "PixelType.h"

namespace Isis {
  class Buffer {
    public:
      Buffer();
      Buffer(const int nsamps, const int nlines, const int nbands,
             const Isis::PixelType type);

      ~Buffer();

      Buffer(const Buffer &);

      Buffer &operator=(const double &d);

      inline int SampleDimension() const {
        return (p_nsamps);
      }

      inline int LineDimension() const {
        return (p_nlines);
      }

      inline int BandDimension() const {
        return (p_nbands);
      }

      inline int size() const {
        return (p_npixels);
      }

      // Methods which return absolute coordinates relative to the buffer
      int Sample(const int index = 0) const;
      int Line(const int index = 0) const;
      int Band(const int index = 0) const;
      void Position(const int index, int &i_samp, int &i_line, int &i_band) const;
      int Index(const int i_samp, const int i_line, const int i_band) const
      throw(Isis::iException &);

      // Methods which give info about the buffer or its contents
      double at(const int index) const;

      inline double &operator[](const int index) {
        return (p_buf[index]);
      }

      const double &operator[](const int index) const {
        return (p_buf[index]);
      }

      inline double *DoubleBuffer() const {
        return (p_buf);
      };
      void Copy(const Buffer &in);

      void *RawBuffer() const {
        return p_rawbuf;
      };

      Isis::PixelType PixelType() const {
        return p_pixelType;
      };

    protected:
      void SetBasePosition(const int start_sample, const int start_line,
                           const int start_band);

      inline void SetBaseSample(const int start_samp) {
        p_sample = start_samp;
        return;
      }

      inline void SetBaseLine(const int start_line) {
        p_line = start_line;
        return;
      }

      inline void SetBaseBand(const int start_band) {
        p_band = start_band;
        return;
      }

      int p_sample;   
      int p_nsamps;   

      int p_line;     
      int p_nlines;   

      int p_band;     
      int p_nbands;   

      int p_npixels;  
      double *p_buf;  
      const Isis::PixelType p_pixelType;  
      void *p_rawbuf;                     

      void Allocate();

      Buffer &operator=(const Buffer &rvalue) {
        return const_cast<Buffer &>(rvalue);
      };

  };
};

#endif