예제 #1
0
파일: rdppm.c 프로젝트: John-He-928/krkrz
read_pbm_integer (j_compress_ptr cinfo, FILE * infile, int maxval)
/* Read an unsigned decimal integer from the PPM file */
/* Swallows one trailing character after the integer */
/* Note that on a 16-bit-int machine, only values up to 64k can be read. */
/* This should not be a problem in practice. */
{
  register int ch;
  register unsigned int val;

  /* Skip any leading whitespace */
  do {
    ch = pbm_getc(infile);
    if (ch == EOF)
      ERREXIT(cinfo, JERR_INPUT_EOF);
  } while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r');

  if (ch < '0' || ch > '9')
    ERREXIT(cinfo, JERR_PPM_NONNUMERIC);

  val = ch - '0';
  while ((ch = pbm_getc(infile)) >= '0' && ch <= '9') {
    val *= 10;
    val += ch - '0';
  }

  if (val > maxval)
    ERREXIT(cinfo, JERR_PPM_TOOLARGE);

  return val;
}
예제 #2
0
LOCAL void
read_ppm_map (j_decompress_ptr cinfo, FILE * infile)
{
  int c;
  unsigned int w, h, maxval, row, col;
  int R, G, B;

  /* Initial 'P' has already been read by read_color_map */
  c = getc(infile);		/* save format discriminator for a sec */

  /* while we fetch the remaining header info */
  w = read_pbm_integer(cinfo, infile);
  h = read_pbm_integer(cinfo, infile);
  maxval = read_pbm_integer(cinfo, infile);

  if (w <= 0 || h <= 0 || maxval <= 0) /* error check */
    ERREXIT(cinfo, JERR_BAD_CMAP_FILE);

  /* For now, we don't support rescaling from an unusual maxval. */
  if (maxval != (unsigned int) MAXJSAMPLE)
    ERREXIT(cinfo, JERR_BAD_CMAP_FILE);

  switch (c) {
  case '3':			/* it's a text-format PPM file */
    for (row = 0; row < h; row++) {
      for (col = 0; col < w; col++) {
	R = read_pbm_integer(cinfo, infile);
	G = read_pbm_integer(cinfo, infile);
	B = read_pbm_integer(cinfo, infile);
	add_map_entry(cinfo, R, G, B);
      }
    }
    break;

  case '6':			/* it's a raw-format PPM file */
    for (row = 0; row < h; row++) {
      for (col = 0; col < w; col++) {
	R = pbm_getc(infile);
	G = pbm_getc(infile);
	B = pbm_getc(infile);
	if (R == EOF || G == EOF || B == EOF)
	  ERREXIT(cinfo, JERR_BAD_CMAP_FILE);
	add_map_entry(cinfo, R, G, B);
      }
    }
    break;

  default:
    ERREXIT(cinfo, JERR_BAD_CMAP_FILE);
    break;
  }
}
예제 #3
0
파일: rdppm.c 프로젝트: mohamed/resp-sim
unsigned int read_pbm_integer (FILE * infile)
/* Read an unsigned decimal integer from the PPM file */
/* Swallows one trailing character after the integer */
{
	char ch;
  	int val;

  	/* Skip any leading whitespace */
  	do
  		{
    		ch=pbm_getc(infile);
  		} while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r');

  	val=(ch - '0');

  	while(((ch=pbm_getc(infile))!=' ')&&(ch != '\t') && (ch != '\n') && (ch !=
'\r')/*&&(feof(infile)==0)*/)
		{
		  val*=10;
		  val+=ch - '0';
		}
  return val;
}
예제 #4
0
read_ppm_map (j_decompress_ptr cinfo, FILE * infile)
{
  int c;
__boundcheck_metadata_store((void *)(&c),(void *)((size_t)(&c)+sizeof(c)*8-1));

  unsigned int w;
__boundcheck_metadata_store((void *)(&w),(void *)((size_t)(&w)+sizeof(w)*8-1));
unsigned int  h;
__boundcheck_metadata_store((void *)(&h),(void *)((size_t)(&h)+sizeof(h)*8-1));
unsigned int  maxval;
__boundcheck_metadata_store((void *)(&maxval),(void *)((size_t)(&maxval)+sizeof(maxval)*8-1));
unsigned int  row;
__boundcheck_metadata_store((void *)(&row),(void *)((size_t)(&row)+sizeof(row)*8-1));
unsigned int  col;
__boundcheck_metadata_store((void *)(&col),(void *)((size_t)(&col)+sizeof(col)*8-1));

  int R;
__boundcheck_metadata_store((void *)(&R),(void *)((size_t)(&R)+sizeof(R)*8-1));
int  G;
__boundcheck_metadata_store((void *)(&G),(void *)((size_t)(&G)+sizeof(G)*8-1));
int  B;
__boundcheck_metadata_store((void *)(&B),(void *)((size_t)(&B)+sizeof(B)*8-1));


  /* Initial 'P' has already been read by read_color_map */
  c = getc(infile);		/* save format discriminator for a sec */

  /* while we fetch the remaining header info */
  w = read_pbm_integer(cinfo, infile);
  h = read_pbm_integer(cinfo, infile);
  maxval = read_pbm_integer(cinfo, infile);

  if (w <= 0 || h <= 0 || maxval <= 0) /* error check */
    ERREXIT(cinfo, JERR_BAD_CMAP_FILE);

  /* For now, we don't support rescaling from an unusual maxval. */
  if (maxval != (unsigned int) MAXJSAMPLE)
    ERREXIT(cinfo, JERR_BAD_CMAP_FILE);

  switch (c) {
  case '3':			/* it's a text-format PPM file */
    for (row = 0; row < h; row++) {
      for (col = 0; col < w; col++) {
	R = read_pbm_integer(cinfo, infile);
	G = read_pbm_integer(cinfo, infile);
	B = read_pbm_integer(cinfo, infile);
	add_map_entry(cinfo, R, G, B);
      }
    }
    break;

  case '6':			/* it's a raw-format PPM file */
    for (row = 0; row < h; row++) {
      for (col = 0; col < w; col++) {
	R = pbm_getc(infile);
	G = pbm_getc(infile);
	B = pbm_getc(infile);
	if (R == EOF || G == EOF || B == EOF)
	  ERREXIT(cinfo, JERR_BAD_CMAP_FILE);
	add_map_entry(cinfo, R, G, B);
      }
    }
    break;

  default:
    ERREXIT(cinfo, JERR_BAD_CMAP_FILE);
    break;
  }
}