#ifndef __BLITTER_H__
#define __BLITTER_H__

#define BLTSIZE(w, h) (w + (h << 6))
#define BLTCON0( \
  minterm, aChan, bChan, cChan, dChan, shift \
) (minterm + (aChan << 11) + (bChan << 10) + (cChan << 9) + (dChan << 8) + (shift << 12))
#define BLTCON1(descending, shift) ((descending << 1) + (shift << 12))

#define BLITTER_ASCENDING (0)
#define BLITTER_DESCENDING (1)


/*
struct BlitAreaDetails {
  unsigned char *target;
  uint16_t drawAreaWidth;
  uint16_t nextBitplaneAdvance;
  uint8_t contiguousBitplanes;
};

struct BlitDrawLineSetup {
  uint16_t linePattern;
  unsigned char *target;

  int dx, dy, sx;
  int sud, sul, aul, accumulator, sign;
};

void blit_fillAreaDetailsFromScreenSetup(
  struct ScreenSetup *screenSetup,
  struct BlitAreaDetails *blitAreaDetails
);

void blit_calculateLineBlit(
  struct BlitDrawLineSetup *setup,
  uint16_t sx,
  uint16_t sy,
  uint16_t ex,
  uint16_t ey
);

void blit_drawLine(
  struct BlitAreaDetails *blitAreaDetails,
  struct BlitDrawLineSetup *setup,
  uint16_t sx,
  uint16_t sy,
  uint16_t ex,
  uint16_t ey,
  uint8_t color
);

void blit_copyOneToOne(
  struct BlitAreaDetails *source,
  struct BlitAreaDetails *target,
  uint16_t sx,
  uint16_t sy,
  uint16_t ex,
  uint16_t ey,
  uint16_t tx,
  uint16_t ty
);

void blit_howDoesFWMandLWMWork(
  struct BlitAreaDetails *source,
  struct BlitAreaDetails *target
);

struct BlitGenericData {
  int8_t shift, leftShift;
  uint16_t width, height;
  uint16_t heightStart, targetHeightStart;
  uint16_t wordSource, wordTarget;
  uint16_t firstWordMask, lastWordMask;
};

void blit_marquee(
  struct BlitAreaDetails *source,
  struct BlitGenericData *data,
  uint16_t splitPoint,
  uint16_t ex,
  uint16_t ey,
  uint16_t ty
);
*/

#endif