lcdpm332.c

来自「uCGUI」· C语言 代码 · 共 39 行

/*************************************************************************************************************
                                                   uC/GUI
                                               嵌入式通用图形软件
File        : LCDPM332.C
Purpose     : Color conversion routines for -332 mode
************************************************************************************************************/

#include <stddef.h>           /* needed for definition of NULL */
#include "LCD_Protected.h"    /* inter modul definitions */

/*********************************************************************
*
*       LCD_FIXEDPALETTE == -332
*
*       256 colors     RRRGGGBB
*
**********************************************************************
*/

int LCD_Color2Index_M332(LCD_COLOR Color) {
  int r, g, b;
  r = Color & 255;
  g = (Color >> 8 ) & 255;
  b = Color >> 16;
  r = (r * 7 + 127) / 255;
  g = (g * 7 + 127) / 255;
  b = (b + 42) / 85;
  return b + (g << 2) + (r << 5);
}

LCD_COLOR LCD_Index2Color_M332(int Index) {
  int r, g, b;
  b = (Index & 3) * 85;
  g = ((Index >> 2) & 7) * 255 / 7;
  r = ((Index >> 5) & 7) * 255 / 7;
  return r + (g << 8) + (((U32)b) << 16);
}