showbmp_14_inv.c

C语言下显示bmp的实例例程。希望能给大家参考一下

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include "lcd.h"	// LCD related Address
#include "lcd_graphic_inv.h"		//lcd image function

#define Color 8

//char buf[320*240];

int main(int argc, char **argv)
{
	FILE *fp;
	int index=0;
	char *bmp_image,*bmp_header;
	BMP_HEADER *header;
	int START_ADDR;


	//--------------------------------------------------------------------------
	//  LCD Control & Frame Register Variables
	//------------------------------------------------------
	int ENBLCD, DisMode, ModeSel, INVCLK, INVLINE, INVFRAME, INVVD, CLKVAL;	// Control Register 1
	int HorzVal, LineBlank, LineVal;			// Control Register 2
	int SelfRef, WLH, WDLY, MMODE, MVAL, PageWidth, OffSize;// Control Register 3
	int HActive, HHorzVal, TestMode, HorzVert, HoldVal;	// Control Register 4
	int LCDBank, StartAddr, EndAddr;			// Frame Register 1, 2
	
	int CntrlReg1, CntrlReg2, CntrlReg3, CntrlReg4;
	int FrameReg1, FrameReg2;

	//--------------------------------------------------------------------------
	//  LCD Test Variables
	//------------------------------------------------------
	int PORT;
	int PosX, PosY;
	
	int HSIZE, VSIZE, BITS, DISMODE;
	int Disp_Mode;
	#define FRAME_BASE_ADDR		0x00	// Bank 0, Bank Address
	#define TESTMODE		0	// if 0 : non test mode 
						// else if 1 : test mode
	unsigned char *buf;
	
	if(strcmp(argv[1],"0")==0) Disp_Mode=0;			//color bar
	else if(strcmp(argv[1],"1")==0) Disp_Mode=1;		//line
	else if(strcmp(argv[1],"2")==0) Disp_Mode=2;		//fill
	else if(strcmp(argv[1],"3")==0) Disp_Mode=3;		//korean famous female dance group
	else if(strcmp(argv[1],"4")==0) Disp_Mode=4;		//Ferrari car
	else if(strcmp(argv[1],"5")==0) Disp_Mode=5;		//Ferrari car
	else if(strcmp(argv[1],"6")==0) Disp_Mode=6;		//Ferrari car
	else if(strcmp(argv[1],"7")==0) Disp_Mode=7;		//Ferrari car
	else if(strcmp(argv[1],"8")==0) Disp_Mode=8;		//Ferrari car
	else if(strcmp(argv[1],"9")==0) Disp_Mode=9;		//Ferrari car
	else Disp_Mode=10;							//color bar

	buf = (unsigned char *)malloc(320*240 + 4);
    if (buf == NULL) {
        printf("frame buffer allocation fail\n");
    }
	START_ADDR=((int)buf>>2);



	switch(Disp_Mode){
	case 0 :
		color_bar(buf);
		break;
	case 1 : 
		lcd_eraser(buf);
		line(buf,10,120,310,120,Green_C);
		break;
	case 2 : 
		lcd_eraser(buf);
		rectangle(buf,30,30,290,210,Green_C);
		break;
	case 3 :
		lcd_eraser(buf);
		box(buf,40,40,280,200,Yellow_C);
		break;
	case 4 : 
		lcd_eraser(buf);
		bar(buf,40,0,280,50,0xfc);
		bar(buf,40,50,280,100,0xca);
		bar(buf,40,100,280,150,0xa7);
		bar(buf,40,150,280,200,0xe3);
		bar(buf,40,200,280,240,0x2f);
		break;
	case 5 :
		lcd_eraser(buf);
		line(buf,10,10,20,230,Red_C);
		break;
	case 6 :
		lcd_eraser(buf);
		ellipse(buf,80,120,50,2,Red_C);
		ellipse(buf,160,120,50,2,Green_C);
		ellipse(buf,240,120,50,2,Blue_C);
		break;
	case 7 :
		lcd_eraser(buf);
		circle(buf,80,120,50,Red_C);
		circle(buf,160,120,50,Green_C);
		circle(buf,240,120,50,Blue_C);
		break;
	case 8 :
		lcd_eraser(buf);
		rgb_bar(buf);
		break;
	case 9 :
		if((fp=fopen("/home/image/ferrari.bmp","rb"))==NULL){
			printf("open file error\n");
			return 1;
		}
//		printf("file open ok.\n");
		bmp_image=(unsigned char *)malloc(77878);
		fread(bmp_image,1,77878,fp);
		draw_bmp(buf, 0, 0, bmp_image);
		fclose(fp);
		break;
	case 10 :
#if 0
		show_bmp(buf,0,0,argv[1]);
#else
		if((fp=fopen(argv[1],"rb"))==NULL){				
			printf("open file error\n");
			return 1;
		}
		bmp_header=(unsigned char *)malloc(54);
		fread(bmp_header,1,54,fp);
		fclose(fp);
		
		header=(BMP_HEADER *)malloc(sizeof(BMP_HEADER));

		//------------------------------------------
		// deal with the bmp file header
		//------------------------------------------
		header->bmp_id=(WORD)bmp_header[index++];
		header->bmp_id+=(WORD)bmp_header[index++]<<8;

		header->bmp_size=(DWORD)bmp_header[index++];
		header->bmp_size+=(DWORD)bmp_header[index++]<<8;
		header->bmp_size+=(DWORD)bmp_header[index++]<<16;
		header->bmp_size+=(DWORD)bmp_header[index++]<<24;

		header->reserv_1=(WORD)bmp_header[index++];
		header->reserv_1=(WORD)bmp_header[index++]<<8;
	
		header->reserv_2=(WORD)bmp_header[index++];
		header->reserv_2=(WORD)bmp_header[index++]<<8;

		header->offset=(DWORD)bmp_header[index++];
		header->offset+=(DWORD)bmp_header[index++]<<8;
		header->offset+=(DWORD)bmp_header[index++]<<16;
		header->offset+=(DWORD)bmp_header[index++]<<24;

		if(header->bmp_id!=0x4d42){
			printf("this is not bmp file\n");
			return 1;
		}
		if(header->bmp_size>77878){
			printf("the image file is too big\n");
			return 1;
		}

		if((fp=fopen(argv[1],"rb"))==NULL){				
			printf("open file error\n");
			return 1;
		}
		bmp_image=(unsigned char *)malloc(header->bmp_size);
		fread(bmp_image,1,(header->bmp_size),fp);
		draw_bmp(buf, 0, 0, bmp_image);
		free(bmp_header);
		free(bmp_image);
		fclose(fp);
			
#endif

	}
	
	HSIZE = 320;
	VSIZE = 240;
	BITS = 8; 
	DISMODE = 0x2;


	//------------------------------------------------------
	//	LCD Test Variables Setting
	//----------------------------------
	PORT  = (DISMODE == SINGLE_8BIT)? 8 : 4;
	
	//--------------------------------------------------------------------------
	//	LCD Control Register "1" Variables Setting
	//----------------------------------
	ENBLCD  = 1;						// 0 : DISABLE, 1 : ENABLE
	DisMode = DISMODE;
	
	switch(BITS) {
	case 1 : ModeSel = DISPLAY_MONO; break;
	case 2 : ModeSel = DISPLAY_2BIT; break;
	case 4 : ModeSel = DISPLAY_4BIT; break;
	case 8 : ModeSel = DISPLAY_8BIT; break;
	}
	
	INVCLK = INVLINE = INVFRAME = INVVD = 0;
	CLKVAL = 14;
	
	//--------------------------------------------------------------------------
	//	LCD Control Register "2" Variables Setting
	//--------------------------------------------------------------------------
	HorzVal   	= (ModeSel == DISPLAY_8BIT)? ((HSIZE*3)/PORT-1) : (HSIZE/PORT-1);
	LineBlank 	= 1; //zy
	LineVal 	= VSIZE - 1;
	
	//-------------------------------------------------
	//	LCD Control Register "3" Variables Setting
	//-------------------------------------------------
	SelfRef = 0 ;
	
	WLH 	= 0;
	WDLY 	= 0;
	MMODE 	= 0; 
	MVAL 	= 0;
	
	//------------------------------------------------------
	//	Virtual Window Display
	//PageWidth = HSIZE*BITS/32;
	//OffSize   = HSIZE*BITS/32;
	//------------------------------------------------------
	//	Non-Virtual Window Display
	PageWidth = 0;
	OffSize   = 0;
	
	//--------------------------------------------------------------------------
	//	LCD Control Register "4" Variables Setting
	//----------------------------------
	HActive =  0;
	HHorzVal = 0;
	TestMode = 0;
	HorzVert = 0;
	HoldVal  = 0;
	
	//--------------------------------------------------------------------------
	//	LCD Frame Register Variables Setting
	//----------------------------------
	PosX = PosY = 0;
   
	LCDBank = 0;
    StartAddr = START_ADDR;
    EndAddr = StartAddr + VSIZE*HSIZE*Color/32 - 1;
	
	
	//--------------------------------------------------------------------------
	//  LCD Register Setting.
	//----------------------------------
	CntrlReg1 =  (1 <<28) |   (DisMode<<26) |  (ModeSel<<24) | (INVCLK<<23) |
	            (INVLINE<<22) |  (INVFRAME<<21) |    (INVVD<<20) | (CLKVAL<<10);
			
	CntrlReg2 = HorzVal<<21 | LineBlank<<10 |  LineVal;
		
	CntrlReg3 = SelfRef<<31 |       WLH<<29 |     WDLY<<27 |    MMODE<<26 |
	               MVAL<<18 | PageWidth<<10 |  OffSize;
		
	CntrlReg4 = HActive<<19 |  HHorzVal<<8  | TestMode<<7  | HorzVert<<6  | HoldVal;
	
	FrameReg1 = LCDBank<<23 | StartAddr;
	FrameReg2 =                 EndAddr;


//	printf("\n");
	
	*LCDCON2=(long) CntrlReg2;
	*LCDCON3=(long) CntrlReg3;
	*LCDCON4=(long) CntrlReg4;
	*LCDSADDR1=(long) FrameReg1;
	*LCDSADDR2=(long) FrameReg2;
	*LCDCON1=(long) CntrlReg1;

//    *LCDCON1 = (*LCDCON1) | (1 <<28);

	return 0;
}