img88.c~

来自「JPEG Image compression using IJG standar」· C~ 代码 · 共 64 行

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

#define c 255

int main(int argc, char *argv[])
{
  FILE 				*outfile;
  int i;
  /*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,
	};*/

  unsigned  char img[64] = {
	c, c, c, c, c, c, c, c, 
	c, c, c, c, c, c, c, c, 
	c, c, c, c, c, c, c, c, 
	c, c, c, c, c, c, c, c, 
	c, c, c, c, c, c, c, c, 
	c, c, c, c, c, c, c, c, 
	c, c, c, c, c, c, c, c, 
	c, c, c, c, c, c, c, c, 
  };
	

  /* Open output files */
  outfile = fopen("img88.pgm", "w"); 
  if (outfile == NULL)  {
	fprintf(stderr, "Output file not found.\n");
	return(-1);
  }

  fwrite("P5\n", sizeof(char), 3, outfile);
  fwrite("8 8\n", sizeof(char), 4, outfile);
  fwrite("255\n", 1, 4, outfile);

  for (i = 0; i < 64; i++) {
	fwrite(&img[i], sizeof(char), 1, outfile);
  }

  fclose(outfile);

  printf("Test file generated.\n");
}