1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: protate.c,v 2.10 2004/04/30 20:29:24 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* prot.c - program to rotate picture file 90 degrees clockwise. |
6 |
* |
7 |
* 2/26/88 |
8 |
*/ |
9 |
|
10 |
#include "platform.h" |
11 |
#include "standard.h" |
12 |
|
13 |
#include "color.h" |
14 |
|
15 |
#include <time.h> |
16 |
|
17 |
#include "resolu.h" |
18 |
|
19 |
int order; /* input scanline order */ |
20 |
int xres, yres; /* input resolution */ |
21 |
|
22 |
int correctorder = 0; /* order correction? */ |
23 |
int ccw = 0; /* rotate CCW? */ |
24 |
|
25 |
#ifdef SMLMEM |
26 |
char buf[1<<20]; /* output buffer */ |
27 |
#else |
28 |
char buf[1<<22]; /* output buffer */ |
29 |
#endif |
30 |
|
31 |
int nrows; /* number of rows output at once */ |
32 |
|
33 |
#define scanbar ((COLR *)buf) |
34 |
|
35 |
char *progname; |
36 |
|
37 |
short ordertab[4][2] = { |
38 |
{0,0}, {XDECR,XDECR|YDECR}, {XDECR|YDECR,YDECR}, {YDECR,XDECR} |
39 |
}; |
40 |
|
41 |
|
42 |
static int neworder(void); |
43 |
static void rotatecw(FILE *fp); |
44 |
static void rotateccw(FILE *fp); |
45 |
|
46 |
|
47 |
|
48 |
static int |
49 |
neworder(void) /* return corrected order */ |
50 |
{ |
51 |
static short ordercw[8]; |
52 |
register int i; |
53 |
|
54 |
if (correctorder) |
55 |
return(order); |
56 |
if (!ordercw[0]) { |
57 |
ordercw[YMAJOR|YDECR] = 0; |
58 |
ordercw[0] = YMAJOR|XDECR; |
59 |
ordercw[YMAJOR|XDECR] = XDECR|YDECR; |
60 |
ordercw[XDECR|YDECR] = YMAJOR|YDECR; |
61 |
ordercw[YMAJOR|XDECR|YDECR] = XDECR; |
62 |
ordercw[XDECR] = YMAJOR; |
63 |
ordercw[YMAJOR] = YDECR; |
64 |
ordercw[YDECR] = YMAJOR|XDECR|YDECR; |
65 |
} |
66 |
if (!ccw) |
67 |
return(ordercw[order]); |
68 |
for (i = 8; i--; ) |
69 |
if (ordercw[i] == order) |
70 |
return(i); |
71 |
fputs("Order botch!\n", stderr); |
72 |
exit(2); |
73 |
} |
74 |
|
75 |
int |
76 |
main( |
77 |
int argc, |
78 |
char *argv[] |
79 |
) |
80 |
{ |
81 |
static char picfmt[LPICFMT+1] = PICFMT; |
82 |
int rval; |
83 |
FILE *fin; |
84 |
|
85 |
SET_DEFAULT_BINARY(); |
86 |
SET_FILE_BINARY(stdout); |
87 |
|
88 |
progname = argv[0]; |
89 |
|
90 |
while (argc > 2 && argv[1][0] == '-') { |
91 |
switch (argv[1][1]) { |
92 |
case 'c': |
93 |
correctorder = 1; |
94 |
break; |
95 |
case 'r': |
96 |
ccw = 1; |
97 |
break; |
98 |
default: |
99 |
goto userr; |
100 |
} |
101 |
argc--; argv++; |
102 |
} |
103 |
if (argc != 2 && argc != 3) |
104 |
goto userr; |
105 |
if ((fin = fopen(argv[1], "r")) == NULL) { |
106 |
fprintf(stderr, "%s: cannot open\n", argv[1]); |
107 |
exit(1); |
108 |
} |
109 |
if (argc == 3 && freopen(argv[2], "w", stdout) == NULL) { |
110 |
fprintf(stderr, "%s: cannot open\n", argv[2]); |
111 |
exit(1); |
112 |
} |
113 |
/* transfer header */ |
114 |
if ((rval = checkheader(fin, picfmt, stdout)) < 0) { |
115 |
fprintf(stderr, "%s: not a Radiance picture\n", progname); |
116 |
exit(1); |
117 |
} |
118 |
if (rval) |
119 |
fputformat(picfmt, stdout); |
120 |
/* add new header info. */ |
121 |
fputs(progname, stdout); |
122 |
if (ccw) fputs(" -r", stdout); |
123 |
if (correctorder) fputs(" -c", stdout); |
124 |
fputs("\n\n", stdout); |
125 |
/* get picture size */ |
126 |
if ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
127 |
fprintf(stderr, "%s: bad picture size\n", progname); |
128 |
exit(1); |
129 |
} |
130 |
/* write new picture size */ |
131 |
fputresolu(neworder(), yres, xres, stdout); |
132 |
/* compute buffer capacity */ |
133 |
nrows = sizeof(buf)/sizeof(COLR)/yres; |
134 |
if (ccw) /* rotate the image */ |
135 |
rotateccw(fin); |
136 |
else |
137 |
rotatecw(fin); |
138 |
exit(0); |
139 |
userr: |
140 |
fprintf(stderr, "Usage: %s [-r][-c] infile [outfile]\n", progname); |
141 |
exit(1); |
142 |
} |
143 |
|
144 |
|
145 |
static void |
146 |
rotatecw( /* rotate picture clockwise */ |
147 |
FILE *fp |
148 |
) |
149 |
{ |
150 |
register COLR *inln; |
151 |
register int xoff, inx, iny; |
152 |
long start, ftell(); |
153 |
|
154 |
if ((inln = (COLR *)malloc(xres*sizeof(COLR))) == NULL) { |
155 |
fprintf(stderr, "%s: out of memory\n", progname); |
156 |
exit(1); |
157 |
} |
158 |
start = ftell(fp); |
159 |
for (xoff = 0; xoff < xres; xoff += nrows) { |
160 |
if (fseek(fp, start, 0) < 0) { |
161 |
fprintf(stderr, "%s: seek error\n", progname); |
162 |
exit(1); |
163 |
} |
164 |
for (iny = yres-1; iny >= 0; iny--) { |
165 |
if (freadcolrs(inln, xres, fp) < 0) { |
166 |
fprintf(stderr, "%s: read error\n", progname); |
167 |
exit(1); |
168 |
} |
169 |
for (inx = 0; inx < nrows && xoff+inx < xres; inx++) |
170 |
copycolr(scanbar[inx*yres+iny], |
171 |
inln[xoff+inx]); |
172 |
} |
173 |
for (inx = 0; inx < nrows && xoff+inx < xres; inx++) |
174 |
if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) { |
175 |
fprintf(stderr, "%s: write error\n", progname); |
176 |
exit(1); |
177 |
} |
178 |
} |
179 |
free((void *)inln); |
180 |
} |
181 |
|
182 |
|
183 |
static void |
184 |
rotateccw( /* rotate picture counter-clockwise */ |
185 |
FILE *fp |
186 |
) |
187 |
{ |
188 |
register COLR *inln; |
189 |
register int xoff, inx, iny; |
190 |
long start, ftell(); |
191 |
|
192 |
if ((inln = (COLR *)malloc(xres*sizeof(COLR))) == NULL) { |
193 |
fprintf(stderr, "%s: out of memory\n", progname); |
194 |
exit(1); |
195 |
} |
196 |
start = ftell(fp); |
197 |
for (xoff = xres-1; xoff >= 0; xoff -= nrows) { |
198 |
if (fseek(fp, start, 0) < 0) { |
199 |
fprintf(stderr, "%s: seek error\n", progname); |
200 |
exit(1); |
201 |
} |
202 |
for (iny = 0; iny < yres; iny++) { |
203 |
if (freadcolrs(inln, xres, fp) < 0) { |
204 |
fprintf(stderr, "%s: read error\n", progname); |
205 |
exit(1); |
206 |
} |
207 |
for (inx = 0; inx < nrows && xoff-inx >= 0; inx++) |
208 |
copycolr(scanbar[inx*yres+iny], |
209 |
inln[xoff-inx]); |
210 |
} |
211 |
for (inx = 0; inx < nrows && xoff-inx >= 0; inx++) |
212 |
if (fwritecolrs(scanbar+inx*yres, yres, stdout) < 0) { |
213 |
fprintf(stderr, "%s: write error\n", progname); |
214 |
exit(1); |
215 |
} |
216 |
} |
217 |
free((void *)inln); |
218 |
} |