1 | /**************************************************************************
|
---|
2 | *
|
---|
3 | * pbmtools.h -- Routines for dealing with portable bitmap files (PBM)
|
---|
4 | * Copyright (C) 1994 Stuart Inglis
|
---|
5 | *
|
---|
6 | * This program is free software; you can redistribute it and/or modify
|
---|
7 | * it under the terms of the GNU General Public License as published by
|
---|
8 | * the Free Software Foundation; either version 2 of the License, or
|
---|
9 | * (at your option) any later version.
|
---|
10 | *
|
---|
11 | * This program is distributed in the hope that it will be useful,
|
---|
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
14 | * GNU General Public License for more details.
|
---|
15 | *
|
---|
16 | * You should have received a copy of the GNU General Public License
|
---|
17 | * along with this program; if not, write to the Free Software
|
---|
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
19 | *
|
---|
20 | * $Id: pbmtools.h 3745 2003-02-20 21:20:24Z mdewsnip $
|
---|
21 | *
|
---|
22 | **************************************************************************/
|
---|
23 |
|
---|
24 | #ifndef __PBMTOOLS_H
|
---|
25 | #define __PBMTOOLS_H
|
---|
26 |
|
---|
27 | #include "sysfuncs.h"
|
---|
28 | #include "basictypes.h"
|
---|
29 |
|
---|
30 | #include "utils.h"
|
---|
31 | #include "marklist.h"
|
---|
32 |
|
---|
33 | #define PBITS 32
|
---|
34 | #define PSH 5
|
---|
35 |
|
---|
36 |
|
---|
37 | /* The next two are ordered pixels col0=left, cols31=right */
|
---|
38 |
|
---|
39 | /*
|
---|
40 | #define pbm_getpixel(bitmap,c,r) \
|
---|
41 | ((bitmap[r][(c)>>PSH] >> ((PBITS-1)-((c)&(PBITS-1))))&1)
|
---|
42 | #define pbm_putpixel(bitmap,c,r,val) \
|
---|
43 | if((val)) \
|
---|
44 | bitmap[r][(c)>>PSH] |= (((unsigned)1<<(PBITS-1)) >> ((c)&(PBITS-1))); \
|
---|
45 | else \
|
---|
46 | bitmap[r][(c)>>PSH] &= ~(((unsigned)1<<(PBITS-1)) >> ((c)&(PBITS-1)))
|
---|
47 | */
|
---|
48 |
|
---|
49 |
|
---|
50 |
|
---|
51 |
|
---|
52 | /* The next two defines are ordered pixel cols0=right, cols31=left */
|
---|
53 |
|
---|
54 | #define pbm_getpixel(bitmap,c,r) \
|
---|
55 | ((bitmap[r][(c)>>PSH] >> ((c)&(PBITS-1)))&1)
|
---|
56 | #define pbm_putpixel(bitmap,c,r,val) \
|
---|
57 | if((val)) \
|
---|
58 | bitmap[r][(c)>>PSH] |= (1<<((c)&(PBITS-1))); \
|
---|
59 | else \
|
---|
60 | bitmap[r][(c)>>PSH] &= ~(1<<((c)&(PBITS-1)))
|
---|
61 |
|
---|
62 |
|
---|
63 | #define pbm_putpixel_trunc(bitmap,c,r,val,cols,rows) \
|
---|
64 | if(((c)>=0)&&((c)<cols)&&((r)>=0)&&((r)<rows)) \
|
---|
65 | pbm_putpixel(bitmap,c,r,val)
|
---|
66 |
|
---|
67 | #define pbm_getpixel_trunc(bitmap,c,r,cols,rows) \
|
---|
68 | ((((c)>=0)&&((c)<cols)&&((r)>=0)&&((r)<rows)) ? \
|
---|
69 | pbm_getpixel(bitmap,c,r) : 0)
|
---|
70 |
|
---|
71 |
|
---|
72 |
|
---|
73 |
|
---|
74 | int pbm_isapbmfile (FILE * fp);
|
---|
75 | void pbm_freearray (Pixel *** bitmap, int rows);
|
---|
76 | Pixel **pbm_copy (Pixel ** bitmap, int cols, int rows);
|
---|
77 | Pixel **pbm_allocarray (int cols, int rows);
|
---|
78 | Pixel **pbm_readfile (FILE * fp, int *cols, int *rows);
|
---|
79 | Pixel **pbm_readnamedfile (char fn[], int *cols, int *rows);
|
---|
80 | void pbm_writefile (FILE * fp, Pixel ** bitmap, int cols, int rows);
|
---|
81 | void pbm_writenamedfile (char fn[], Pixel ** bitmap, int cols, int rows);
|
---|
82 |
|
---|
83 | void pbm_putpixel_range (Pixel ** bitmap, int c, int r, int val, int cols, int rows);
|
---|
84 | int pbm_getpixel_range (Pixel ** bitmap, int c, int r, int cols, int rows);
|
---|
85 |
|
---|
86 | #endif
|
---|