1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.10 |
static const char RCSid[] = "$Id: pflip.c,v 2.9 2006/08/08 18:04:41 greg Exp $"; |
3 |
greg |
1.1 |
#endif |
4 |
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/* |
5 |
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* flip picture file horizontally and/or vertically |
6 |
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*/ |
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8 |
greg |
1.3 |
#include <stdio.h> |
9 |
greg |
2.5 |
#include <time.h> |
10 |
schorsch |
2.7 |
#include <string.h> |
11 |
greg |
2.5 |
|
12 |
schorsch |
2.6 |
#include "platform.h" |
13 |
greg |
1.1 |
#include "color.h" |
14 |
greg |
1.5 |
#include "resolu.h" |
15 |
greg |
1.1 |
|
16 |
greg |
1.5 |
int order; /* input orientation */ |
17 |
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int xres, yres; /* resolution (scanlen, nscans) */ |
18 |
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19 |
greg |
1.1 |
long *scanpos; /* scanline positions */ |
20 |
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21 |
greg |
1.5 |
int fhoriz=0, fvert=0; /* flip flags */ |
22 |
greg |
1.1 |
|
23 |
greg |
1.5 |
int correctorder = 0; /* correcting orientation? */ |
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25 |
greg |
1.1 |
FILE *fin; /* input file */ |
26 |
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27 |
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char *progname; |
28 |
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29 |
greg |
2.2 |
|
30 |
schorsch |
2.8 |
static void memerr(void); |
31 |
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static void scanfile(void); |
32 |
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static void flip(void); |
33 |
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34 |
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35 |
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static int |
36 |
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neworder(void) /* figure out new order from old */ |
37 |
greg |
1.5 |
{ |
38 |
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register int no; |
39 |
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40 |
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if (correctorder) |
41 |
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return(order); /* just leave it */ |
42 |
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if ((no = order) & YMAJOR) { |
43 |
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if (fhoriz) no ^= XDECR; |
44 |
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if (fvert) no ^= YDECR; |
45 |
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} else { |
46 |
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if (fhoriz) no ^= YDECR; |
47 |
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if (fvert) no ^= XDECR; |
48 |
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} |
49 |
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return(no); |
50 |
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} |
51 |
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52 |
schorsch |
2.8 |
int |
53 |
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main( |
54 |
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int argc, |
55 |
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char *argv[] |
56 |
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) |
57 |
greg |
1.1 |
{ |
58 |
greg |
2.4 |
static char picfmt[LPICFMT+1] = PICFMT; |
59 |
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int i, rval; |
60 |
schorsch |
2.6 |
SET_DEFAULT_BINARY(); |
61 |
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SET_FILE_BINARY(stdout); |
62 |
greg |
1.1 |
progname = argv[0]; |
63 |
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64 |
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for (i = 1; i < argc; i++) |
65 |
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if (!strcmp(argv[i], "-h")) |
66 |
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fhoriz++; |
67 |
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else if (!strcmp(argv[i], "-v")) |
68 |
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fvert++; |
69 |
greg |
1.5 |
else if (!strcmp(argv[i], "-c")) |
70 |
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correctorder++; |
71 |
greg |
1.1 |
else |
72 |
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break; |
73 |
greg |
2.10 |
if (i < argc-2) |
74 |
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goto userr; |
75 |
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if (!fhoriz && !fvert) |
76 |
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fprintf(stderr, "%s: warning - no operation\n", argv[0]); |
77 |
greg |
1.1 |
if (i >= argc || argv[i][0] == '-') { |
78 |
greg |
2.10 |
if (fvert) |
79 |
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goto userr; |
80 |
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SET_FILE_BINARY(stdin); |
81 |
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fin = stdin; |
82 |
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} else if ((fin = fopen(argv[i], "r")) == NULL) { |
83 |
greg |
2.9 |
fprintf(stderr, "%s: cannot open\n", argv[i]); |
84 |
greg |
1.1 |
exit(1); |
85 |
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} |
86 |
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if (i < argc-1 && freopen(argv[i+1], "w", stdout) == NULL) { |
87 |
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fprintf(stderr, "%s: cannot open\n", argv[i+1]); |
88 |
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exit(1); |
89 |
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} |
90 |
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/* transfer header */ |
91 |
greg |
2.4 |
if ((rval = checkheader(fin, picfmt, stdout)) < 0) { |
92 |
greg |
1.4 |
fprintf(stderr, "%s: input not a Radiance picture\n", |
93 |
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progname); |
94 |
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exit(1); |
95 |
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} |
96 |
greg |
2.4 |
if (rval) |
97 |
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fputformat(picfmt, stdout); |
98 |
greg |
1.1 |
/* add new header info. */ |
99 |
greg |
1.2 |
printargs(i, argv, stdout); |
100 |
greg |
1.1 |
putchar('\n'); |
101 |
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/* get picture size */ |
102 |
greg |
1.5 |
if ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
103 |
greg |
1.1 |
fprintf(stderr, "%s: bad picture size\n", progname); |
104 |
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exit(1); |
105 |
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} |
106 |
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/* write new picture size */ |
107 |
greg |
1.5 |
fputresolu(neworder(), xres, yres, stdout); |
108 |
greg |
1.1 |
/* goto end if vertical flip */ |
109 |
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if (fvert) |
110 |
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scanfile(); |
111 |
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flip(); /* flip the image */ |
112 |
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exit(0); |
113 |
greg |
2.10 |
userr: |
114 |
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fprintf(stderr, "Usage: %s [-h][-v][-c] infile [outfile]\n", |
115 |
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progname); |
116 |
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exit(1); |
117 |
greg |
1.1 |
} |
118 |
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119 |
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120 |
schorsch |
2.8 |
static void |
121 |
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memerr(void) |
122 |
greg |
1.1 |
{ |
123 |
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fprintf(stderr, "%s: out of memory\n", progname); |
124 |
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exit(1); |
125 |
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} |
126 |
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127 |
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128 |
schorsch |
2.8 |
static void |
129 |
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scanfile(void) /* scan to the end of file */ |
130 |
greg |
1.1 |
{ |
131 |
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extern long ftell(); |
132 |
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COLR *scanin; |
133 |
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int y; |
134 |
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135 |
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if ((scanpos = (long *)malloc(yres*sizeof(long))) == NULL) |
136 |
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memerr(); |
137 |
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if ((scanin = (COLR *)malloc(xres*sizeof(COLR))) == NULL) |
138 |
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memerr(); |
139 |
greg |
2.3 |
for (y = yres-1; y > 0; y--) { |
140 |
greg |
1.1 |
scanpos[y] = ftell(fin); |
141 |
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if (freadcolrs(scanin, xres, fin) < 0) { |
142 |
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fprintf(stderr, "%s: read error\n", progname); |
143 |
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exit(1); |
144 |
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} |
145 |
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} |
146 |
greg |
2.3 |
scanpos[0] = ftell(fin); |
147 |
greg |
2.5 |
free((void *)scanin); |
148 |
greg |
1.1 |
} |
149 |
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150 |
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|
151 |
schorsch |
2.8 |
static void |
152 |
|
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flip(void) /* flip the picture */ |
153 |
greg |
1.1 |
{ |
154 |
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COLR *scanin, *scanout; |
155 |
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int y; |
156 |
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register int x; |
157 |
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158 |
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if ((scanin = (COLR *)malloc(xres*sizeof(COLR))) == NULL) |
159 |
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memerr(); |
160 |
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if (fhoriz) { |
161 |
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if ((scanout = (COLR *)malloc(xres*sizeof(COLR))) == NULL) |
162 |
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memerr(); |
163 |
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} else |
164 |
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scanout = scanin; |
165 |
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for (y = yres-1; y >= 0; y--) { |
166 |
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if (fvert && fseek(fin, scanpos[yres-1-y], 0) == EOF) { |
167 |
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fprintf(stderr, "%s: seek error\n", progname); |
168 |
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exit(1); |
169 |
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} |
170 |
|
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if (freadcolrs(scanin, xres, fin) < 0) { |
171 |
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fprintf(stderr, "%s: read error\n", progname); |
172 |
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exit(1); |
173 |
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} |
174 |
|
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if (fhoriz) |
175 |
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for (x = 0; x < xres; x++) |
176 |
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copycolr(scanout[x], scanin[xres-1-x]); |
177 |
|
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if (fwritecolrs(scanout, xres, stdout) < 0) { |
178 |
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fprintf(stderr, "%s: write error\n", progname); |
179 |
|
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exit(1); |
180 |
|
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} |
181 |
|
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} |
182 |
greg |
2.5 |
free((void *)scanin); |
183 |
greg |
2.3 |
if (fhoriz) |
184 |
greg |
2.5 |
free((void *)scanout); |
185 |
greg |
1.1 |
} |