lcdpm555.c

MCB2300_ucgui_LCD320240.rar LPC2368的uc/gui的移植

/*
*********************************************************************************************************
*   											 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		: LCDM555.C
Purpose 	: Color conversion routines
---------------------------END-OF-HEADER------------------------------
*/

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

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

#define B_BITS 5
#define G_BITS 5
#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 == 555, 32768 colors, 0RRRRRGGGGGBBBBB
*
**********************************************************************
*/
/*********************************************************************
*
*   	LCD_Color2Index_M555
*/
unsigned LCD_Color2Index_M555(LCD_COLOR Color)
{
	int r,g,b;
	r = (Color >> (8 - R_BITS)) & R_MASK;
	g = (Color >> (16 - G_BITS)) & G_MASK;
	b = (Color >> (24 - B_BITS)) & B_MASK;
	return b + (g << B_BITS) + (r << (G_BITS + B_BITS));
}

/*********************************************************************
*
*   	LCD_Index2Color_M555
*/
LCD_COLOR LCD_Index2Color_M555(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);
}

/*********************************************************************
*
*   	LCD_GetIndexMask_M555
*/
unsigned LCD_GetIndexMask_M555(void)
{
	return 0x7fff;
}

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