scale.h

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#ifndef INCL_SCALE
#define INCL_SCALE 1

// Scale 2x using 2xSaI
template <class Source_pixel, class Dest_pixel, class Manip_pixels>
void Scale_2xSaI
(
  Source_pixel *source, // ->source pixels.
  int srcx, int srcy,   // Start of rectangle within src.
  int srcw, int srch,   // Dims. of rectangle.
  int sline_pixels,   // Pixels (words)/line for source.
  int sheight,      // Source height.
  Dest_pixel *dest,   // ->dest pixels.
  int dline_pixels,   // Pixels (words)/line for dest.
  const Manip_pixels& manip // Manipulator methods.
);

// Super Eagle Scaler
template <class Source_pixel, class Dest_pixel, class Manip_pixels>
void Scale_SuperEagle
(
  Source_pixel *source, // ->source pixels.
  int srcx, int srcy,   // Start of rectangle within src.
  int srcw, int srch,   // Dims. of rectangle.
  int sline_pixels,   // Pixels (words)/line for source.
  int sheight,      // Source height.
  Dest_pixel *dest,   // ->dest pixels.
  int dline_pixels,   // Pixels (words)/line for dest.
  const Manip_pixels& manip // Manipulator methods.
);

// Super 2xSaI Scaler
template <class Source_pixel, class Dest_pixel, class Manip_pixels>
void Scale_Super2xSaI
(
  Source_pixel *source, // ->source pixels.
  int srcx, int srcy,   // Start of rectangle within src.
  int srcw, int srch,   // Dims. of rectangle.
  int sline_pixels,   // Pixels (words)/line for source.
  int sheight,      // Source height.
  Dest_pixel *dest,   // ->dest pixels.
  int dline_pixels,   // Pixels (words)/line for dest.
  const Manip_pixels& manip // Manipulator methods.
);


//Scale X2 with bilinear interpolation.
template <class Source_pixel, class Dest_pixel, class Manip_pixels>
void Scale_2xBilinear
(
  Source_pixel *source,   // ->source pixels.
  int srcx, int srcy,   // Start of rectangle within src.
  int srcw, int srch,   // Dims. of rectangle.
  int sline_pixels,   // Pixels (words)/line for source.
  int sheight,      // Source height.
  Dest_pixel *dest,   // ->dest pixels.
  int dline_pixels,   // Pixels (words)/line for dest.
  const Manip_pixels& manip // Manipulator methods.
);

//Scale X2 with bilinear plus interpolation.
template <class Source_pixel, class Dest_pixel, class Manip_pixels>
void Scale_2xBilinearPlus
(
  Source_pixel *source,   // ->source pixels.
  int srcx, int srcy,   // Start of rectangle within src.
  int srcw, int srch,   // Dims. of rectangle.
  int sline_pixels,   // Pixels (words)/line for source.
  int sheight,      // Source height.
  Dest_pixel *dest,   // ->dest pixels.
  int dline_pixels,   // Pixels (words)/line for dest.
  const Manip_pixels& manip // Manipulator methods.
);

// Point Sampling Scaler
void Scale_point
(
  const unsigned char *source,  // ->source pixels.
  const int srcx, const int srcy, // Start of rectangle within src.
  const int srcw, const int srch, // Dims. of rectangle.
  const int sline_pixels,   // Pixels (words)/line for source.
  const int sheight,    // Source height.
  unsigned char *dest,    // ->dest pixels.
  const int dline_pixels,   // Pixels (words)/line for dest.
  const int factor    // Scale factor
);

// Interlaced Point Sampling Scaler
void Scale_interlace
(
  const unsigned char *source,  // ->source pixels.
  const int srcx, const int srcy, // Start of rectangle within src.
  const int srcw, const int srch, // Dims. of rectangle.
  const int sline_pixels,   // Pixels (words)/line for source.
  const int sheight,    // Source height.
  unsigned char *dest,    // ->dest pixels.
  const int dline_pixels,   // Pixels (words)/line for dest.
  const int factor    // Scale factor
);

void Scale2x_noblur
(
  const unsigned char *src1,  // ->source pixels.
  const int srcx, const int srcy, // Start of rectangle within src.
  const int srcw, const int srch, // Dims. of rectangle.
  const int sline_pixels,   // Pixels (words)/line for source.
  const int sheight,    // Source height.
  unsigned char *dest,    // ->dest pixels.
  const int dline_pixels    // Pixels (words)/line for dest.
);

#include "scale.cc"   /* Seems to be needed. */

#endif

---