cfb_console.c

S3C2440+SM501在wince环境下的应用！

#include <string.h>
#include "video_fb.h"
#include "sm501.h"


static GraphicDevice *pGD;	/* Pointer to Graphic array */
static void *video_fb_address;          /* frame buffer address */
static void *video_console_address;     /* console buffer start address */
static int console_col = 0;		/* cursor col */
static int console_row = 0;		/* cursor row */
static unsigned long eorx, fgx, bgx;  /* color pats */

#define VIDEO_VISIBLE_COLS      (pGD->winSizeX)
#define VIDEO_VISIBLE_ROWS      (pGD->winSizeY)
#define VIDEO_PIXEL_SIZE        (pGD->gdfBytesPP)
#define VIDEO_DATA_FORMAT       (pGD->gdfIndex)
#define VIDEO_FB_ADRS           (pGD->frameAdrs)

static void video_clear (void)
{
	int	size = pGD->winSizeX * pGD->winSizeY * pGD->gdfBytesPP;
		
	memset ((void *)pGD->frameAdrs, 0x0, size);
}

int video_init(void)
{
	unsigned long color8;
	
	
    if ((pGD=video_hw_init()) == NULL)
		return -1;

    video_fb_address = (void*)VIDEO_FB_ADRS;

    /* Init drawing pats */		// 初始化画图时序
    switch (VIDEO_DATA_FORMAT)
    {
	    case GDF__8BIT_INDEX:
			video_set_lut (0x01, CONSOLE_FG_COL, CONSOLE_FG_COL, CONSOLE_FG_COL);
			video_set_lut (0x00, CONSOLE_BG_COL, CONSOLE_BG_COL, CONSOLE_BG_COL);
			fgx = 0x01010101;
			bgx = 0x00000000;
			break;

		case GDF__8BIT_332RGB:
			color8 = ((CONSOLE_FG_COL & 0xe0) | ((CONSOLE_FG_COL>>3) & 0x1c) | CONSOLE_FG_COL>>6);
			fgx = (color8<<24) | (color8<<16) | (color8<<8) | color8;
			color8 = ((CONSOLE_BG_COL & 0xe0) | ((CONSOLE_BG_COL>>3) & 0x1c) | CONSOLE_BG_COL>>6);
			bgx = (color8<<24) | (color8<<16) | (color8<<8) | color8;
			break;

		case GDF_15BIT_555RGB:
			fgx = (((CONSOLE_FG_COL>>3)<<26) | ((CONSOLE_FG_COL>>3)<<21) | ((CONSOLE_FG_COL>>3)<<16) |
				   ((CONSOLE_FG_COL>>3)<<10) | ((CONSOLE_FG_COL>>3)<<5)  |  (CONSOLE_FG_COL>>3));
			bgx = (((CONSOLE_BG_COL>>3)<<26) | ((CONSOLE_BG_COL>>3)<<21) | ((CONSOLE_BG_COL>>3)<<16) |
				   ((CONSOLE_BG_COL>>3)<<10) | ((CONSOLE_BG_COL>>3)<<5)  |  (CONSOLE_BG_COL>>3));
			break;

    	case GDF_16BIT_565RGB:
			fgx = (((CONSOLE_FG_COL>>3)<<27) | ((CONSOLE_FG_COL>>2)<<21) | ((CONSOLE_FG_COL>>3)<<16) |
				   ((CONSOLE_FG_COL>>3)<<11) | ((CONSOLE_FG_COL>>2)<<5)  |  (CONSOLE_FG_COL>>3));
			bgx = (((CONSOLE_BG_COL>>3)<<27) | ((CONSOLE_BG_COL>>2)<<21) | ((CONSOLE_BG_COL>>3)<<16) |
				   ((CONSOLE_BG_COL>>3)<<11) | ((CONSOLE_BG_COL>>2)<<5)  |  (CONSOLE_BG_COL>>3));
			break;

		case GDF_32BIT_X888RGB:
			fgx = (CONSOLE_FG_COL<<16) | (CONSOLE_FG_COL<<8) | CONSOLE_FG_COL;
			bgx = (CONSOLE_BG_COL<<16) | (CONSOLE_BG_COL<<8) | CONSOLE_BG_COL;
			break;

		case GDF_24BIT_888RGB:
			fgx = (CONSOLE_FG_COL<<24) | (CONSOLE_FG_COL<<16) | (CONSOLE_FG_COL<<8) | CONSOLE_FG_COL;
			bgx = (CONSOLE_BG_COL<<24) | (CONSOLE_BG_COL<<16) | (CONSOLE_BG_COL<<8) | CONSOLE_BG_COL;
			break;
	}//switch
	fgx = 0xffffffff;
    eorx = fgx ^ bgx;

	video_clear ();		// 清屏

    video_console_address = video_fb_address;

    /* Initialize the console */	// 初始化控制台
    console_col  = 0;
    console_row  = 0;

    return 0 ;
}//video_init()