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- /* pbmtoepsi.c
- **
- ** by Doug Crabill, based heavily on pbmtoascii
- **
- ** Converts a pbm file to an encapsulated PostScript style bitmap.
- ** Note that it does NOT covert the pbm file to PostScript, only to
- ** a bitmap to be added to a piece of PostScript generated elsewhere.
- **
- ** Copyright (C) 1988 by Jef Poskanzer.
- **
- ** Permission to use, copy, modify, and distribute this software and its
- ** documentation for any purpose and without fee is hereby granted, provided
- ** that the above copyright notice appear in all copies and that both that
- ** copyright notice and this permission notice appear in supporting
- ** documentation. This software is provided "as is" without express or
- ** implied warranty.
- */
-
- #include "pbm.h"
-
- #if !defined(MAXINT)
- #define MAXINT (0x7fffffff)
- #endif
-
- int
- main( argc, argv )
- int argc;
- char *argv[];
- {
- FILE *ifd;
- register bit **bits;
- int argn, rows, cols, row, col, tot, count;
- int top = MAXINT, bottom = -MAXINT, left = MAXINT, right = -MAXINT;
- int bbonly = 0;
- char *usage = "[-bbonly] [pbmfile]";
-
-
- pbm_init( &argc, argv );
-
- argn = 1;
-
- if ( argn < argc && argv[argn][0] == '-' && argv[argn][1] != '\0' ) {
- if ( pm_keymatch( argv[argn], "-bbonly", 2 ) ) {
- bbonly = 1;
- } else {
- pm_usage( usage );
- }
- ++argn;
- }
-
- if ( argn != argc ) {
- ifd = pm_openr( argv[argn] );
- ++argn;
- } else {
- ifd = stdin;
- }
-
- if ( argn != argc )
- pm_usage( usage );
-
- bits = pbm_readpbm( ifd, &cols, &rows );
-
- pm_close( ifd );
-
- for (row = 0; row < rows; row++) {
- for (col = 0; col < cols; col++) {
- if (bits[row][col] == PBM_BLACK) {
- if (row < top) {
- top = row;
- }
- if (row > bottom) {
- bottom = row;
- }
- if (col < left) {
- left = col;
- }
- if (col > right) {
- right = col;
- }
- }
- }
- }
-
- printf("%%!PS-Adobe-2.0 EPSF-1.2\n");
- printf("%%%%BoundingBox: %d %d %d %d\n", left, rows - bottom, right, rows - top);
-
- if (bbonly) {
- exit(0);
- }
-
- printf("%%%%BeginPreview: %d %d 1 %d\n", right - left + 1, bottom - top + 1, bottom - top + 1);
-
- for (row = top; row <= bottom; row++) {
- printf("%% ");
- count = 0;
- for (col = left; col <= right; col += 4) {
- tot = 0;
- if (bits[row][col] == PBM_BLACK) {
- tot += 8;
- }
- if (bits[row][col+1] == PBM_BLACK) {
- tot += 4;
- }
- if (bits[row][col+2] == PBM_BLACK) {
- tot += 2;
- }
- if (bits[row][col+3] == PBM_BLACK) {
- tot++;
- }
- printf("%x", tot);
- count++;
- }
- printf((count % 2) == 0 ? "\n" : "0\n");
- }
- printf("%%%%EndImage\n");
- printf("%%%%EndPreview\n");
-
- exit( 0 );
- }
-