tiger.c

来自「以一种4级灰度的液晶为例」· C语言 代码 · 共 56 行

#include "stdio.h"

int main(void)
{
	FILE *fp,*fout;
	 
	unsigned char ch1;
	unsigned char *image;
	unsigned short temp1,temp2,temp3;
	unsigned short buffer[220][176];
	int i,j;
	
	if((fp=fopen("tiger.bmp","rb"))==NULL)
	{
		printf("Can't open screen.bmp\n");
		return 0;
	}
	
	if((fout=fopen("screen.h","wt"))==NULL)
	{
		printf("Can't open screen.h\n");
		return 0;
	}
	
	fseek(fp,0x0a,0);
	ch1=fgetc(fp);
	fseek(fp,ch1,0);
	fread(image,116160,1,fp);
	
	for(i=0;i<220;i++)
	{
		for(j=0;j<176;j+=3)
		{
			temp1=*(image+j+i*176)>>3;
			temp2=*(image+j+1+i*176)>>2;
			temp3=*(image+j+2+i*176)>>3;
			
			buffer[i][j]=temp3;
			buffer[i][j]+=temp2<<5;
			buffer[i][j]+=temp1<<11;
		}	
	}
	
	fprintf(fout,"const unsigned short screen[220][176]={ok!\n");
	for(i=0;i<220;i++)
	{
		for(j=0;j<176;j++)
			fprintf(fout,"0x%x,",buffer[i][j]);
		fprintf(fout,"\n");
	}
	fprintf(fout,"};\n");

	printf("ok\n");
	fclose(fp);
	return 1;
}