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
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/* libpnm2.c - pnm utility library part 2
**
** Copyright (C) 1989 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 "netpbm/pm_c_util.h"
#include "pnm.h"
#include "ppm.h"
#include "pgm.h"
#include "pbm.h"
void
pnm_writepnminit(FILE * const fileP,
int const cols,
int const rows,
xelval const maxval,
int const format,
int const forceplain) {
bool const plainFormat = forceplain || pm_plain_output;
switch (PNM_FORMAT_TYPE(format)) {
case PPM_TYPE:
ppm_writeppminit(fileP, cols, rows, (pixval) maxval, plainFormat);
break;
case PGM_TYPE:
pgm_writepgminit(fileP, cols, rows, (gray) maxval, plainFormat);
break;
case PBM_TYPE:
pbm_writepbminit(fileP, cols, rows, plainFormat);
break;
default:
pm_error("invalid format argument received by pnm_writepnminit(): %d"
"PNM_FORMAT_TYPE(format) must be %d, %d, or %d",
format, PBM_TYPE, PGM_TYPE, PPM_TYPE);
}
}
static void
writepgmrow(FILE * const fileP,
const xel * const xelrow,
unsigned int const cols,
xelval const maxval,
int const format,
bool const plainFormat) {
jmp_buf jmpbuf;
jmp_buf * origJmpbufP;
gray * grayrow;
grayrow = pgm_allocrow(cols);
if (setjmp(jmpbuf) != 0) {
pgm_freerow(grayrow);
pm_setjmpbuf(origJmpbufP);
pm_longjmp();
} else {
unsigned int col;
pm_setjmpbufsave(&jmpbuf, &origJmpbufP);
for (col = 0; col < cols; ++col)
grayrow[col] = PNM_GET1(xelrow[col]);
pgm_writepgmrow(fileP, grayrow, cols, (gray) maxval, plainFormat);
pm_setjmpbuf(origJmpbufP);
}
pgm_freerow(grayrow);
}
static void
writepbmrow(FILE * const fileP,
const xel * const xelrow,
unsigned int const cols,
bool const plainFormat) {
jmp_buf jmpbuf;
jmp_buf * origJmpbufP;
bit * bitrow;
bitrow = pbm_allocrow(cols);
if (setjmp(jmpbuf) != 0) {
pbm_freerow(bitrow);
pm_setjmpbuf(origJmpbufP);
pm_longjmp();
} else {
unsigned int col;
pm_setjmpbufsave(&jmpbuf, &origJmpbufP);
for (col = 0; col < cols; ++col)
bitrow[col] = PNM_GET1(xelrow[col]) == 0 ? PBM_BLACK : PBM_WHITE;
pbm_writepbmrow(fileP, bitrow, cols, plainFormat);
pm_setjmpbuf(origJmpbufP);
}
pbm_freerow(bitrow);
}
void
pnm_writepnmrow(FILE * const fileP,
const xel * const xelrow,
int const cols,
xelval const maxval,
int const format,
int const forceplain) {
bool const plainFormat = forceplain || pm_plain_output;
switch (PNM_FORMAT_TYPE(format)) {
case PPM_TYPE:
ppm_writeppmrow(fileP, (pixel*) xelrow, cols, (pixval) maxval,
plainFormat);
break;
case PGM_TYPE:
writepgmrow(fileP, xelrow, cols, maxval, format, plainFormat);
break;
case PBM_TYPE:
writepbmrow(fileP, xelrow, cols, plainFormat);
break;
default:
pm_error("invalid format argument received by pnm_writepnmrow(): %d"
"PNM_FORMAT_TYPE(format) must be %d, %d, or %d",
format, PBM_TYPE, PGM_TYPE, PPM_TYPE);
}
}
void
pnm_writepnm(FILE * const fileP,
xel ** const xels,
int const cols,
int const rows,
xelval const maxval,
int const format,
int const forceplain) {
unsigned int row;
pnm_writepnminit(fileP, cols, rows, maxval, format, forceplain);
for (row = 0; row < rows; ++row)
pnm_writepnmrow(fileP, xels[row], cols, maxval, format, forceplain);
}
|
