linfei.bak

以一种4级灰度的液晶为例

/*******************************************************************/
/* NAME:       LINFEI.C                                            */
/* DEDCRIPTION:This program can transfer monochrome BMP to HEX file*/
/* AUTHOR:     linfei                                              */
/* DATE:       2005.3.31                                           */
/*******************************************************************/

#include "stdio.h"

main()
{
	FILE *fp,*fout;
	int i,j,k;
	unsigned short width,height,widthbyte,heightbyte;
	unsigned char ch1,ch2;
	unsigned char bmpbit[1280];               /*the Bytes of BMP file*/ 
	unsigned char bitdata[10240];             /*the Bits  of BMP file*/
	unsigned char lcd_data[1280];             /*the Bytes of LCD data*/
 	 
  if((fp=fopen("bmptest.bmp","rb"))==NULL)        /*是否存在该文件*/
  {
    printf("\n Can't open BMP file!");
    exit(1);
  }
    
  ch1=fgetc(fp);
	ch2=fgetc(fp);
	if((ch1!='B')||(ch2!='M'))                /*是否是BMP文件?*/
	{
		printf("It's Not BMP file!\n");
		exit(1);
	}
	
	fseek(fp,0x1c,0);
	ch1=fgetc(fp);
	if(ch1!=0x01)                             /*是否是单色BMP?*/
	{
		printf("It's Not monochrome BMP file!\n");
		exit(1);
	} 		
  
  if((fout=fopen("bmptest.h","wt"))==NULL)  /*创建数据头文件*/
	{
		printf("Can't create bmptest.h file\n");
		exit(1);
	}
	
	fseek(fp,0x12,0);                         /*获取位图宽度*/
	width=fgetc(fp);
	fseek(fp,0x16,0);                         /*获取位图高度*/
	height=fgetc(fp);
	
	if((width>0x80)||(height>0x50))         /*位图大小是否合适（128*80）*/
	{
		printf("The size of BMP is too big!\n");
    exit(1);	
	}
	
	if(width%32==0)                           /*每扫描行位数是32的倍数(4B)*/
		widthbyte=width/8;
	else
		widthbyte=(width/32)*4+4;
	 

	if(height%8==0)                           /*每列位数是8的倍数(1B)*/
	  heightbyte=height/8;
	else
	  heightbyte=height/8+1;
	
	fseek(fp,0x0a,0);                         /*提取位图数据偏移量*/
	ch1=fgetc(fp);
	fseek(fp,ch1,0);
	fread(bmpbit,1,1280,fp);                  /*读位图数据到数组*/
	 
	for(i=0;i<height;i++)                     /*提取位图数据位*/
		for(j=0;j<widthbyte;j++)
			for(k=0;k<8;k++)
				bitdata[8*j+k+i*widthbyte*8]=((bmpbit[j+i*widthbyte]>>(7-k))&0x1);
	 
	for(i=0;i<10240;i++)                      /*位图数据位取反*/
	  bitdata[i]=(~bitdata[i])&0x01;
	  
	for(i=0;i<heightbyte;i++)                 /*将位图数据位整合为LCD的显示字节数据*/
		for(j=0;j<width;j++)
		{
			lcd_data[i*width+j]=0;
			for(k=0;k<8;k++)
				lcd_data[i*width+j]+=bitdata[j+k*widthbyte*8+i*8*widthbyte*8]<<k;
		}	
	
  fprintf(fout,"/*The info of BMPDATA:width=%d  heightbyte=%d*/\n",width,heightbyte);
	fprintf(fout,"const unsigned char screen[%d]={%d,%d,\n",width*heightbyte+2,width,heightbyte);
	
	for(i=0;i<heightbyte;i++)                /*输出16进制数据*/
	{
		for(j=0;j<width;j++)
		{
				fprintf(fout,"0x%x,",lcd_data[j+i*width]);
		    if((j+1)%8==0) 
		      fprintf(fout,"\n");
	  }
	  fprintf(fout,"\n");
	}
	fprintf(fout,"};\n");

	fclose(fp);
	fclose(fout); 
}