www.pudn.com > ucosv2(GUI).rar > LCDPM332.c

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              µC/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
---------------------------------------------------------------------- 
File        : LCDPM332.C 
Purpose     : Color conversion routines for -332 mode 
---------------------------END-OF-HEADER------------------------------ 
*/ 
 
#include            /* 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); 
}