1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/* Include file for fax routines
Copyright (C) 1990, 1995 Frank D. Cringle.
This file is part of viewfax - g3/g4 fax processing software.
viewfax is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef _faxexpand_h_
#define _faxexpand_h_
#include <limits.h>
#if ULONG_MAX == 4294967295UL
typedef unsigned long t32bits;
#elif UINT_MAX == 4294967295UL
typedef unsigned int t32bits;
#else
#error need a 32-bit unsigned type
/* if you expirence the above error, and live to tell about it,
add an #elif case for your architecture
and tell [email protected] , [email protected] about it */
#endif
#if USHRT_MAX == 65535
typedef unsigned short t16bits;
#elif UINT_MAX == 65535
typedef unsigned int t16bits;
#else
#error need a 16-bit unsigned type
/* if you experience the above error, and live to tell about it,
add an #elif case for your architecture
and tell [email protected] about it */
#endif
typedef t16bits pixnum;
struct pagenode;
/* drawfunc() points to a function which processes a line of the
expanded image described as a list of run lengths.
run is the base of an array of lengths, starting with a
(possibly empty) white run for line number linenum.
pn points to the page descriptor */
typedef void (*drawfunc)(pixnum *run, int linenum, struct pagenode *pn);
struct strip { /* tiff strip descriptor */
off_t offset; /* offset in file */
off_t size; /* size of this strip */
};
/* defines for the pagenode member: type */
#define FAX_TIFF 1
#define FAX_RAW 2
struct pagenode { /* compressed page descriptor */
struct pagenode *prev, *next; /* list links */
char *name; /* basename of file */
char *pathname; /* full name of file */
int nstrips; /* number of strips */
int rowsperstrip; /* number of rows per strip */
int stripnum; /* current strip while expanding */
struct strip *strips; /* array of strips containing fax data in file */
t16bits *data; /* in-memory copy of strip */
size_t length; /* length of data */
pixnum width; /* width of page in pixels */
pixnum height; /* height of page in lines */
int inverse; /* black <=> white */
int lsbfirst; /* bit order is lsb first */
int type; /* Bernd: tiff vs no tiff*/
int orient; /* orientation - upsidedown, landscape, mirrored */
int vres; /* vertical resolution: 1 = fine */
int dpiX,dpiY; /* DPI horz/vert */
void (*expander)(struct pagenode *, drawfunc);
void *extra; /* used for Ximage */
};
extern struct pagenode *firstpage, *lastpage, *thispage,* auxpage;
extern struct pagenode defaultpage;
/* page orientation flags */
#define TURN_U 1
#define TURN_L 2
#define TURN_M 4
extern const char *ProgName;
/* fsm state codes */
#define S_Null 0
#define S_Pass 1
#define S_Horiz 2
#define S_V0 3
#define S_VR 4
#define S_VL 5
#define S_Ext 6
#define S_TermW 7
#define S_TermB 8
#define S_MakeUpW 9
#define S_MakeUpB 10
#define S_MakeUp 11
#define S_EOL 12
/* state table entry */
struct tabent {
unsigned char State;
unsigned char Width; /* width of code in bits */
pixnum Param; /* run length */
};
extern struct tabent MainTable[]; /* 2-D state table */
extern struct tabent WhiteTable[]; /* White run lengths */
extern struct tabent BlackTable[]; /* Black run lengths */
extern int verbose;
void MHexpand(struct pagenode *pn, drawfunc df);
void g31expand(struct pagenode *pn, drawfunc df);
void g32expand(struct pagenode *pn, drawfunc df);
void g4expand(struct pagenode *pn, drawfunc df);
unsigned char * getstrip(struct pagenode *pn, int strip);
struct pagenode *notefile(const char *name);
int notetiff(const char *name);
/* initialise code tables */
extern void faxinit(void);
/* count lines in image */
extern int G3count(struct pagenode *pn, int twoD);
/* get memory or abort if none available */
extern char *xmalloc(unsigned int size);
#ifdef __linux__
#define _HAVE_USLEEP
#endif
#if defined(BSD) || defined(__FreeBSD__) || defined(_BSD_SOURCE)
#define _HAVE_USLEEP
#ifndef rindex
#define rindex strrchr
#endif
#ifndef bcmp
#define memcmp bcmp
#endif
#define memclr(p,n) bzero(p,n)
#else /* not BSD */
#define memclr(p,n) memset(p,0,n)
#endif
#endif
|
