?? lcd159a.c

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    goto WriteBit0;
  case 1:
    goto WriteBit1;
  case 2:
    goto WriteBit2;
  default:
    goto WriteBit3;
  }
/*
        Write without transparency
*/
WriteBit0:
  WRITEDATA_DIRECT(*(pTrans+(pixels>>6)));
  if (!--xsize)
    return;
WriteBit1:
  WRITEDATA_DIRECT(*(pTrans+(3&(pixels>>4))));
  if (!--xsize)
    return;
WriteBit2:
  WRITEDATA_DIRECT(*(pTrans+(3&(pixels>>2))));
  if (!--xsize)
    return;
WriteBit3:
  WRITEDATA_DIRECT(*(pTrans+(3&(pixels))));
  if (!--xsize)
    return;
  pixels = *(++p);
  x+=4;
  goto WriteBit0;
/*
        Write with transparency
*/
WriteTBit0:
  if (pixels&(3<<6))
    SETPIXEL(x+0, y, *(pTrans+(pixels>>6)));
  if (!--xsize)
    return;
WriteTBit1:
  if (pixels&(3<<4))
    SETPIXEL(x+1, y, *(pTrans+(3&(pixels>>4))));
  if (!--xsize)
    return;
WriteTBit2:
  if (pixels&(3<<2))
    SETPIXEL(x+2, y, *(pTrans+(3&(pixels>>2))));
  if (!--xsize)
    return;
WriteTBit3:
  if (pixels&(3<<0))
    SETPIXEL(x+3, y, *(pTrans+(3&(pixels))));
  if (!--xsize)
    return;
  pixels = *(++p);
  x+=4;
  goto WriteTBit0;
}

#else

/*
        *****************************************
        *
        *           Draw Bitmap 2 BPP
        *           no optimizations
        *
        *****************************************
*/

static void  DrawBitLine2BPP(int x, int y, U8 const*p, int Diff, int xsize, const LCD_PIXELINDEX*pTrans) {
  LCD_PIXELINDEX pixels;
/*
// Jump to right entry point
*/
  pixels = *p;
  if (GUI_Context.DrawMode & LCD_DRAWMODE_TRANS) switch (Diff&3) {
  case 0:
    goto WriteTBit0;
  case 1:
    goto WriteTBit1;
  case 2:
    goto WriteTBit2;
  default:
    goto WriteTBit3;
  } else switch (Diff&3) {
  case 0:
    goto WriteBit0;
  case 1:
    goto WriteBit1;
  case 2:
    goto WriteBit2;
  default:
    goto WriteBit3;
  }
/*
        Write without transparency
*/
WriteBit0:
  SETPIXEL(x+0, y, *(pTrans+(pixels>>6)));
  if (!--xsize)
    return;
WriteBit1:
  SETPIXEL(x+1, y, *(pTrans+(3&(pixels>>4))));
  if (!--xsize)
    return;
WriteBit2:
  SETPIXEL(x+2, y, *(pTrans+(3&(pixels>>2))));
  if (!--xsize)
    return;
WriteBit3:
  SETPIXEL(x+3, y, *(pTrans+(3&(pixels))));
  if (!--xsize)
    return;
  pixels = *(++p);
  x+=4;
  goto WriteBit0;
/*
        Write with transparency
*/
WriteTBit0:
  if (pixels&(3<<6))
    SETPIXEL(x+0, y, *(pTrans+(pixels>>6)));
  if (!--xsize)
    return;
WriteTBit1:
  if (pixels&(3<<4))
    SETPIXEL(x+1, y, *(pTrans+(3&(pixels>>4))));
  if (!--xsize)
    return;
WriteTBit2:
  if (pixels&(3<<2))
    SETPIXEL(x+2, y, *(pTrans+(3&(pixels>>2))));
  if (!--xsize)
    return;
WriteTBit3:
  if (pixels&(3<<0))
    SETPIXEL(x+3, y, *(pTrans+(3&(pixels))));
  if (!--xsize)
    return;
  pixels = *(++p);
  x+=4;
  goto WriteTBit0;
}

#endif

#endif

/*
        *****************************************
        *
        *           Draw Bitmap 4 BPP
        *           optimized
        *
        *****************************************
*/

#if (LCD_MAX_LOG_COLORS > 4)

#if  (LCD_OPTIMIZE)  \
  && (!LCD_MIRROR_X) \
  && (!LCD_MIRROR_Y) \
  && (!LCD_SWAP_XY)

static void  DrawBitLine4BPP(int x, int y, U8 const*p, int Diff, int xsize, const LCD_PIXELINDEX*pTrans) {
  LCD_PIXELINDEX pixels;
/*
// Jump to right entry point
*/
  pixels = *p;
  if (GUI_Context.DrawMode & LCD_DRAWMODE_TRANS) {
    if ((Diff&1) ==0)
      goto WriteTBit0;
    goto WriteTBit1;
  } else {
    if ((Diff&1) ==0)
      goto WriteBit0;
    goto WriteBit1;
  }
/*
        Write without transparency
*/
WriteBit0:
  WRITEDATA_DIRECT(*(pTrans+(pixels>>4)));
  if (!--xsize)
    return;
WriteBit1:
  WRITEDATA_DIRECT(*(pTrans+(pixels&0xf)));
  if (!--xsize)
    return;
  x+=2;
  pixels = *(++p);
  goto WriteBit0;
/*
        Write with transparency
*/
WriteTBit0:
  if (pixels>>4)
    SETPIXEL(x+0, y, *(pTrans+(pixels>>4)));
  if (!--xsize)
    return;
WriteTBit1:
  if (pixels&0xf)
    SETPIXEL(x+1, y, *(pTrans+(pixels&0xf)));
  if (!--xsize)
    return;
  x+=2;
  pixels = *(++p);
  goto WriteTBit0;
}

#else

/*
        *****************************************
        *
        *           Draw Bitmap 4 BPP
        *           no optimizations
        *
        *****************************************
*/

static void  DrawBitLine4BPP(int x, int y, U8 const*p, int Diff, int xsize, const LCD_PIXELINDEX*pTrans) {
  LCD_PIXELINDEX pixels;
/*
// Jump to right entry point
*/
  pixels = *p;
  if (GUI_Context.DrawMode & LCD_DRAWMODE_TRANS) {
    if ((Diff&1) ==0)
      goto WriteTBit0;
    goto WriteTBit1;
  } else {
    if ((Diff&1) ==0)
      goto WriteBit0;
    goto WriteBit1;
  }
/*
        Write without transparency
*/
WriteBit0:
  SETPIXEL(x+0, y, *(pTrans+(pixels>>4)));
  if (!--xsize)
    return;
WriteBit1:
  SETPIXEL(x+1, y, *(pTrans+(pixels&0xf)));
  if (!--xsize)
    return;
  x+=2;
  pixels = *(++p);
  goto WriteBit0;
/*
        Write with transparency
*/
WriteTBit0:
  if (pixels>>4)
    SETPIXEL(x+0, y, *(pTrans+(pixels>>4)));
  if (!--xsize)
    return;
WriteTBit1:
  if (pixels&0xf)
    SETPIXEL(x+1, y, *(pTrans+(pixels&0xf)));
  if (!--xsize)
    return;
  x+=2;
  pixels = *(++p);
  goto WriteTBit0;
}

#endif

#endif

/*
        *****************************************
        *
        *           Draw Bitmap 8 BPP
        *           optimized
        *
        *****************************************
*/

#if (LCD_MAX_LOG_COLORS > 16)

#if  (LCD_OPTIMIZE)  \
  && (!LCD_MIRROR_X) \
  && (!LCD_MIRROR_Y) \
  && (!LCD_SWAP_XY)

static void  DrawBitLine8BPP(int x, int y, U8 const*p, int xsize, const LCD_PIXELINDEX*pTrans) {
  LCD_PIXELINDEX pixel;
  if ((GUI_Context.DrawMode & LCD_DRAWMODE_TRANS)==0) {
    if (pTrans) {
      for (;xsize > 0; xsize--,x++,p++) {
        pixel = *p;
        WRITEDATA_DIRECT(*(pTrans+pixel));
      }
    } else {
      for (;xsize > 0; xsize--,x++,p++) {
        WRITEDATA_DIRECT(*p);
      }
    }
  } else {   /* Handle transparent bitmap */
    if (pTrans) {
      for (; xsize > 0; xsize--, x++, p++) {
        pixel = *p;
        if (pixel) {
          SETPIXEL(x+0, y, *(pTrans+pixel));
        }
      }
    } else {
      for (; xsize > 0; xsize--, x++, p++) {
        pixel = *p;
        if (pixel) {
          SETPIXEL(x+0, y, pixel);
        }
      }
    }
  }
}

#else

/*
        *****************************************
        *
        *           Draw Bitmap 8 BPP
        *           no optimizations
        *
        *****************************************
*/

static void  DrawBitLine8BPP(int x, int y, U8 const*p, int xsize, const LCD_PIXELINDEX*pTrans) {
  LCD_PIXELINDEX pixel;
  if ((GUI_Context.DrawMode & LCD_DRAWMODE_TRANS)==0) {
    if (pTrans) {
      for (;xsize > 0; xsize--,x++,p++) {
        pixel = *p;
        SETPIXEL(x, y, *(pTrans+pixel));
      }
    } else {
      for (;xsize > 0; xsize--,x++,p++) {
        SETPIXEL(x, y, *p);
      }
    }
  } else {   /* Handle transparent bitmap */
    if (pTrans) {
      for (; xsize > 0; xsize--, x++, p++) {
        pixel = *p;
        if (pixel) {
          SETPIXEL(x+0, y, *(pTrans+pixel));
        }
      }
    } else {
      for (; xsize > 0; xsize--, x++, p++) {
        pixel = *p;
        if (pixel) {
          SETPIXEL(x+0, y, pixel);
        }
      }
    }
  }
}

#endif

#endif

/*
        *********************************************************
        *
        *           Universal draw Bitmap routine
        *
        *********************************************************
*/

void LCD_L0_DrawBitmap   (int x0, int y0,
                       int xsize, int ysize,
                       int BitsPerPixel, 
                       int BytesPerLine,
                       const U8* pData, int Diff,
                       const LCD_PIXELINDEX* pTrans)
{
  int i;
  #if  (LCD_OPTIMIZE)  \
    && (!LCD_MIRROR_X) \
    && (!LCD_MIRROR_Y) \
    && (!LCD_SWAP_XY)
    SET_RECT(x0 + Diff, y0, x0 + Diff + xsize - 1, y0 + ysize - 1);
  #endif
  /*
     Use DrawBitLineXBPP
  */
  for (i=0; i<ysize; i++) {
    switch (BitsPerPixel) {
    case 1:
      DrawBitLine1BPP(x0, i + y0, pData, Diff, xsize, pTrans);
      break;
    #if (LCD_MAX_LOG_COLORS > 2)
      case 2:
        DrawBitLine2BPP(x0, i + y0, pData, Diff, xsize, pTrans);
        break;
    #endif
    #if (LCD_MAX_LOG_COLORS > 4)
      case 4:
        DrawBitLine4BPP(x0, i + y0, pData, Diff, xsize, pTrans);
        break;
    #endif
    #if (LCD_MAX_LOG_COLORS > 16)
      case 8:
        DrawBitLine8BPP(x0, i + y0, pData, xsize, pTrans);
        break;
    #endif
    }
    pData += BytesPerLine;
  }
}

/********************************************************
*
*       LCD_L0_SetOrg
*
*********************************************************

Purpose:        Sets the original position of the virtual display.
                Has no function at this point with the PC-driver.
*/

int OrgX, OrgY;
void LCD_L0_SetOrg(int x, int y) {
  OrgX = x;
  OrgY = y;
}

/*
        *****************************************
        *
        *           LCD_On, LCD_Off
        *
        *****************************************

Sets the original position of the virtual display.
Has no function at this point with the PC-driver.

*/

void LCD_Off          (void) {
#ifdef LCD_OFF
  LCD_OFF();
#endif
}

void LCD_On           (void) {
#ifdef LCD_ON
  LCD_ON();
#endif
}

/*
        *****************************************
        *
        *           LCD_L0_Init
        *
        *****************************************
*/

int  LCD_L0_Init(void) {
  int i;
  GUI_DEBUG_LOG("\nLCD_Init()");
  LCD_INIT_CONTROLLER();
  /* set cursor to illegal value */
  CurrentX = CurrentY = 0xfff;
  /* clear LCD */
  GOTOXY(0, 0, RAM_WRITE);
  for (i = 0; i < LCD_XSIZE_PHYS * LCD_YSIZE_PHYS; i++) {
    LCD_WRITEDATA0(0);
  }
  GOTOXY(0, 0, RAM_WRITE);
  /* clear VRam */
  #if LCD_CACHE
    memset(VRam, 0, sizeof(VRam));
  #endif
  LCD_Off();
  return 0;
}

/*
        *****************************************
        *
        *           LCD_L0_SetLUTEntry
        *
        *****************************************

This function is only a dummy

*/

void LCD_L0_SetLUTEntry(U8 Pos, LCD_COLOR Color) {
  Pos = Pos;
  Color = Color;
}

#else

void LCD159A(void) { } /* avoid empty object files */

#endif  /* (LCD_CONTROLLER == 0x159A) */
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?? lcd159a.c

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