OFbkImage.h

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//-*-c++-*-
#ifdef PLATFORM_APERIOS
#  include <OPENR/OFbkImage.h>
#else
#  ifndef INCLUDED_OFbkImage_h_
#  define INCLUDED_OFbkImage_h_

#include "Shared/ODataFormats.h"

typedef longword OFbkImageBand;
const OFbkImageBand ofbkimageBAND_Y    = 0; // Y_LL
const OFbkImageBand ofbkimageBAND_Cr   = 1;
const OFbkImageBand ofbkimageBAND_Cb   = 2;
const OFbkImageBand ofbkimageBAND_CDT  = 3;
const OFbkImageBand ofbkimageBAND_Y_LH = 4;
const OFbkImageBand ofbkimageBAND_Y_HL = 5;
const OFbkImageBand ofbkimageBAND_Y_HH = 6;

class OFbkImage {
public:
  OFbkImage(OFbkImageInfo* /*info*/, byte* /*data*/, OFbkImageBand /*band*/) : image_(NULL), width_(0), height_(0), skip_(0) {}
  ~OFbkImage() {}

  bool   IsValid() const { return image_ != 0 ? true : false; }
  byte*  Pointer() const { return image_;    }
  int    Width()   const { return width_;    }
  int    Height()  const { return height_;   }
  int    Skip()  const { return skip_;     }

  inline byte Pixel(int x, int y) const;

  // Tag Information
  inline word FieldCounter() const;
  inline byte ColorFrequency(OCdtChannel chan) const;


protected:
  byte* image_;
  int   width_;
  int   height_;
  int   skip_;
  
private:
  OFbkImage(const OFbkImage&); //!< don't call
  OFbkImage& operator =(const OFbkImage& fbk_image); //!< don't call
};

byte
OFbkImage::Pixel(int x, int y) const
{
  return *(image_ + (width_ + skip_) * y + x);
}

word
OFbkImage::FieldCounter() const
{
  byte* tag = image_ + (width_ + skip_) * (height_ - 1) + 0;
  return ((word)tag[1] << 8) | (word)tag[0];
}

byte
OFbkImage::ColorFrequency(OCdtChannel chan) const
{
  byte freq;
  byte* tag = image_ + (width_ + skip_) * (height_ - 1) + 0;

  if (chan == ocdtCHANNEL0) {
    freq = tag[8];
  } else if (chan == ocdtCHANNEL1) {
    freq = tag[9];
  } else if (chan == ocdtCHANNEL2) {
    freq = tag[10];
  } else if (chan == ocdtCHANNEL3) {
    freq = tag[11];
  } else if (chan == ocdtCHANNEL4) {
    freq = tag[4];
  } else if (chan == ocdtCHANNEL5) {
    freq = tag[5];
  } else if (chan == ocdtCHANNEL6) {
    freq = tag[6];
  } else if (chan == ocdtCHANNEL7) {
    freq = tag[7];
  } else {
    freq = 0;
  }

  return freq;
}

#  endif
#endif