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Photo CD Demo 1
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fbm
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fbrev.c
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C/C++ Source or Header
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1990-06-24
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120 lines
/*****************************************************************
* fbrev.c: FBM Release 1.0 25-Feb-90 Michael Mauldin
*
* Copyright (C) 1989,1990 by Michael Mauldin. Permission is granted
* to use this file in whole or in part for any purpose, educational,
* recreational or commercial, provided that this copyright notice
* is retained unchanged. This software is available to all free of
* charge by anonymous FTP and in the UUNET archives.
*
* fbrev.c: Reverse intensity of image.
*
* USAGE
* % fbrev < image > image2
*
* EDITLOG
* LastEditDate = Mon Jun 25 00:04:27 1990 - Michael Mauldin
* LastFileName = /usr2/mlm/src/misc/fbm/fbrev.c
*
* HISTORY
* 25-Jun-90 Michael Mauldin (mlm@cs.cmu.edu) Carnegie Mellon
* Package for Release 1.0
*
* 07-Mar-89 Michael Mauldin (mlm) at Carnegie Mellon University
* Beta release (version 0.9) mlm@cs.cmu.edu
*
* 21-Aug-88 Michael Mauldin (mlm) at Carnegie-Mellon University
* Created.
*****************************************************************/
# include <stdio.h>
# include <math.h>
# include <ctype.h>
# include "fbm.h"
# define USAGE \
"Usage: fbrev [ -<type> ] < image > image"
#ifndef lint
static char *fbmid =
"$FBM fbrev.c <1.0> 25-Jun-90 (C) 1989,1990 by Michael Mauldin, source \
code available free from MLM@CS.CMU.EDU and from UUNET archives$";
#endif
main (argc, argv)
char *argv[];
{ FBM image;
register unsigned char *bmptr, *tail;
register int i;
int outtype = FMT_FBM;
/* Get the options */
while (--argc > 0 && (*++argv)[0] == '-')
{ while (*++(*argv))
{ switch (**argv)
{ case 'A': outtype = FMT_ATK; break;
case 'B': outtype = FMT_FACE; break;
case 'F': outtype = FMT_FBM; break;
case 'G': outtype = FMT_GIF; break;
case 'I': outtype = FMT_IFF; break;
case 'L': outtype = FMT_LEAF; break;
case 'M': outtype = FMT_MCP; break;
case 'P': outtype = FMT_PBM; break;
case 'R': outtype = FMT_RLE; break;
case 'S': outtype = FMT_SUN; break;
case 'T': outtype = FMT_TIFF; break;
case 'X': outtype = FMT_X11; break;
case 'Z': outtype = FMT_PCX; break;
default: fprintf (stderr, "%s\n", USAGE);
exit (1);
}
}
}
/* Clear the memory pointer so alloc_fbm won't be confused */
image.cm = image.bm = (unsigned char *) NULL;
/* Now read in the image */
if (read_bitmap (&image, (char *) NULL))
{ if (image.hdr.clrlen > 0)
{ fprintf (stderr, "Reversing map: \"%s\" [%dx%d], %d colors\n",
image.hdr.title[0] ? image.hdr.title : "(untitled)",
image.hdr.cols, image.hdr.rows, image.hdr.clrlen / 3);
for (i=0; i<image.hdr.clrlen; i++)
{ image.cm[i] = BYTE - image.cm[i]; }
}
else if (image.hdr.physbits != 8)
{ fprintf (stderr,
"fbrev: can't handle files with %d physical bytes per pixel.\n",
image.hdr.physbits);
exit (1);
}
else
{ fprintf (stderr, "Reversing: \"%s\" [%dx%d]",
image.hdr.title[0] ? image.hdr.title : "(untitled)",
image.hdr.cols, image.hdr.rows);
if (image.hdr.planes > 1)
{ fprintf (stderr, ", %d planes", image.hdr.planes); }
fprintf (stderr, "\n");
bmptr = image.bm;
tail = bmptr + image.hdr.plnlen * image.hdr.planes;
while (bmptr < tail)
{ *bmptr = BYTE - *bmptr;
bmptr++;
}
}
/* Write it out */
write_bitmap (&image, stdout, outtype);
}
else
{ exit (1); }
exit (0);
}