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- /*****************************************************************
- * 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);
- }
-