lcdpm565_index2color.c

成功移植到s3c44b0开发板上的ucos-ii和lwip

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              礐/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        : LCDPM565_Index2Color.c
Purpose     : Color conversion routines
---------------------------END-OF-HEADER------------------------------
*/

#include "LCD_Protected.h"    /* inter modul definitions */

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/

#define B_BITS 5
#define G_BITS 6
#define R_BITS 5

#define R_MASK ((1 << R_BITS) -1)
#define G_MASK ((1 << G_BITS) -1)
#define B_MASK ((1 << B_BITS) -1)

/*********************************************************************
*
*       Public code,
*
*       LCD_FIXEDPALETTE == 565, 65536 colors, RRRRRGGGGGGBBBBB
*
**********************************************************************
*/
/*********************************************************************
*
*       LCD_Index2Color_M565
*/
LCD_COLOR LCD_Index2Color_M565(int Index) {
  unsigned int r,g,b;
  /* Seperate the color masks */
  b = Index                                  & B_MASK;
  g = (Index >> B_BITS)                      & G_MASK;
  r = ((unsigned)Index >> (B_BITS + G_BITS)) & R_MASK;
  /* Convert the color masks */
  r = r * 255 / R_MASK;
  g = g * 255 / G_MASK;
  b = b * 255 / B_MASK;
  return r + (g<<8) + (((U32)b)<<16);
}

/*************************** End of file ****************************/