Centre Blaise Pascal » Bench4GPU

#include <stdio.h>

#include <stdlib.h>

#define MYSIZE 24

#define UCHAR_MAX 255

void sauvegarde_pgm(char nom[MYSIZE],unsigned int *image,int dim)

{

  FILE            *sortie;

  unsigned long   i,j;

  sortie=fopen(nom,"w");

  fprintf(sortie,"P5\n");

  fprintf(sortie,"%i %i\n",dim,dim);

  fprintf(sortie,"255\n");

  for (j=0;j<dim;j++) for (i=0;i<dim;i++)

    {

      fputc(image[i+dim*j],sortie);

    }

  fclose(sortie);

}

void lecture_pgm(char nom[24])

{

  FILE            *entree;

  unsigned long   i,j;

  char MyType[MYSIZE],g,c;

  unsigned int MyX,MyY,MyDyn,p;

  char map[10] = " .,:;ox%#@";

  entree=fopen(nom,"r");

  fscanf(entree," %s\n%d %d\n%d\n",MyType,&MyX,&MyY,&MyDyn);

  printf("Image de type %s, de taille %d*%d avec dynamique %d\n",

	 MyType,MyX,MyY,MyDyn);

  for (j=0;j<MyY;j++)

    {

      for (i=0;i<MyX;i++)

	{

	  g=fgetc(entree);

	  p=2*(char) ((g < 0) ? (UCHAR_MAX - g) : g);

	  c=map[p*10/256];

	  printf("%c%c",c,c);

	}

      printf("\n");

    }

  fclose(entree);

}

int main(int argc,char **argv)

{

  lecture_pgm(argv[1]);

}