readimg.c

来自「JPEG Image compression using IJG standar」· C语言 代码 · 共 66 行

/*
 ********************************************************************
 *
 *	Include Files
 *
 ********************************************************************
 */
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <time.h>

int main(int argc, char *argv[])
{
  FILE 				*infile;
  int i, j;
  unsigned char str[256], k[64];
  char e[64];

unsigned char img[64] = {
	52, 55, 61, 66,  70,  61,  64, 73,
	63, 59, 66, 90,  109, 85,  69, 72,
	62, 59, 68, 113, 144, 104, 66, 73,
	63, 58, 71, 122, 154, 106, 70, 69,
	67, 61, 68, 104, 126, 88,  68, 70,
	79, 65, 60, 70,  77,  68,  58, 75,
	85, 71, 64, 59,  55,  61,  65, 83,
	87, 79, 69, 68,  65,  76,  78, 94,
  };

  /* Open input files */
  infile = fopen(argv[1], "r"); 
  if (infile == NULL)  {
	fprintf(stderr, "Input file not found.\n");
	return(-1);
  }

  fgets (str, 256, infile);
  fgets (str, 256, infile);
  fgets (str, 256, infile);
  
  for (i = 0; i<8; i++) {
	for (j = 0; j < 8; j++) {
	  fread(&k[i*8+j], sizeof(char), 1, infile);
	  fprintf(stderr, "%10u", k[i*8+j]);
	  e[i*8+j] = k[i*8+j] - img[i*8+j];
	}
	fprintf(stderr,"\n");
  }

  fclose(infile);

	fprintf(stderr,"Error: RecImg - OrgImg \n");
 for (i = 0; i<8; i++) {
	for (j = 0; j < 8; j++) {
	  fprintf(stderr, "%10d", e[i*8+j]);
	}
	fprintf(stderr,"\n");
  }



}