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