1 |
greg |
2.1 |
#ifndef lint |
2 |
greg |
2.9 |
static const char RCSid[] = "$Id$"; |
3 |
greg |
2.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* Convert Radiance file to/from AVS file. |
6 |
|
|
*/ |
7 |
|
|
|
8 |
|
|
#include <stdio.h> |
9 |
greg |
2.3 |
#include <math.h> |
10 |
greg |
2.1 |
#ifdef MSDOS |
11 |
|
|
#include <fcntl.h> |
12 |
|
|
#endif |
13 |
greg |
2.9 |
#include <time.h> |
14 |
greg |
2.1 |
#include "color.h" |
15 |
|
|
#include "resolu.h" |
16 |
|
|
|
17 |
greg |
2.4 |
double gamcor = 2.2; /* gamma correction */ |
18 |
greg |
2.1 |
|
19 |
|
|
int bradj = 0; /* brightness adjustment */ |
20 |
|
|
|
21 |
|
|
char *progname; |
22 |
|
|
|
23 |
|
|
int xmax, ymax; |
24 |
|
|
|
25 |
|
|
|
26 |
|
|
main(argc, argv) |
27 |
|
|
int argc; |
28 |
|
|
char *argv[]; |
29 |
|
|
{ |
30 |
greg |
2.2 |
extern long getint(); |
31 |
greg |
2.1 |
int reverse = 0; |
32 |
|
|
int i; |
33 |
|
|
|
34 |
|
|
progname = argv[0]; |
35 |
|
|
|
36 |
|
|
for (i = 1; i < argc; i++) |
37 |
|
|
if (argv[i][0] == '-') |
38 |
|
|
switch (argv[i][1]) { |
39 |
|
|
case 'g': /* gamma correction */ |
40 |
greg |
2.4 |
gamcor = atof(argv[++i]); |
41 |
greg |
2.1 |
break; |
42 |
|
|
case 'e': /* exposure adjustment */ |
43 |
|
|
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
44 |
|
|
goto userr; |
45 |
|
|
bradj = atoi(argv[++i]); |
46 |
|
|
break; |
47 |
|
|
case 'r': /* reverse conversion */ |
48 |
|
|
reverse = 1; |
49 |
|
|
break; |
50 |
|
|
default: |
51 |
|
|
goto userr; |
52 |
|
|
} |
53 |
|
|
else |
54 |
|
|
break; |
55 |
|
|
|
56 |
|
|
if (i < argc-2) |
57 |
|
|
goto userr; |
58 |
|
|
if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
59 |
|
|
fprintf(stderr, "%s: can't open input \"%s\"\n", |
60 |
|
|
progname, argv[i]); |
61 |
|
|
exit(1); |
62 |
|
|
} |
63 |
|
|
if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
64 |
greg |
2.6 |
fprintf(stderr, "%s: can't open output \"%s\"\n", |
65 |
greg |
2.1 |
progname, argv[i+1]); |
66 |
|
|
exit(1); |
67 |
|
|
} |
68 |
|
|
#ifdef MSDOS |
69 |
|
|
setmode(fileno(stdin), O_BINARY); |
70 |
|
|
setmode(fileno(stdout), O_BINARY); |
71 |
|
|
#endif |
72 |
greg |
2.4 |
setcolrgam(gamcor); /* set up gamma correction */ |
73 |
greg |
2.1 |
if (reverse) { |
74 |
|
|
/* get their image resolution */ |
75 |
greg |
2.2 |
xmax = getint(4, stdin); |
76 |
|
|
ymax = getint(4, stdin); |
77 |
greg |
2.7 |
if (feof(stdin)) |
78 |
|
|
quiterr("empty input file"); |
79 |
greg |
2.1 |
/* put our header */ |
80 |
greg |
2.8 |
newheader("RADIANCE", stdout); |
81 |
greg |
2.1 |
printargs(i, argv, stdout); |
82 |
|
|
fputformat(COLRFMT, stdout); |
83 |
|
|
putchar('\n'); |
84 |
|
|
fprtresolu(xmax, ymax, stdout); |
85 |
|
|
/* convert file */ |
86 |
|
|
avs2ra(); |
87 |
|
|
} else { |
88 |
|
|
/* get our header */ |
89 |
|
|
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
90 |
|
|
fgetresolu(&xmax, &ymax, stdin) < 0) |
91 |
|
|
quiterr("bad picture format"); |
92 |
|
|
/* write their header */ |
93 |
greg |
2.2 |
putint((long)xmax, 4, stdout); |
94 |
|
|
putint((long)ymax, 4, stdout); |
95 |
greg |
2.1 |
/* convert file */ |
96 |
|
|
ra2avs(); |
97 |
|
|
} |
98 |
|
|
exit(0); |
99 |
|
|
userr: |
100 |
|
|
fprintf(stderr, |
101 |
|
|
"Usage: %s [-r][-g gamma][-e +/-stops] [input [output]]\n", |
102 |
|
|
progname); |
103 |
|
|
exit(1); |
104 |
|
|
} |
105 |
|
|
|
106 |
|
|
|
107 |
|
|
quiterr(err) /* print message and exit */ |
108 |
|
|
char *err; |
109 |
|
|
{ |
110 |
|
|
if (err != NULL) { |
111 |
|
|
fprintf(stderr, "%s: %s\n", progname, err); |
112 |
|
|
exit(1); |
113 |
|
|
} |
114 |
|
|
exit(0); |
115 |
|
|
} |
116 |
|
|
|
117 |
|
|
|
118 |
|
|
avs2ra() /* convert 24-bit scanlines to Radiance picture */ |
119 |
|
|
{ |
120 |
|
|
COLR *scanout; |
121 |
|
|
register int x; |
122 |
|
|
int y; |
123 |
|
|
/* allocate scanline */ |
124 |
|
|
scanout = (COLR *)malloc(xmax*sizeof(COLR)); |
125 |
|
|
if (scanout == NULL) |
126 |
|
|
quiterr("out of memory in avs2ra"); |
127 |
|
|
/* convert image */ |
128 |
|
|
for (y = ymax-1; y >= 0; y--) { |
129 |
greg |
2.5 |
for (x = 0; x < xmax; x++) { |
130 |
|
|
(void)getc(stdin); /* toss alpha */ |
131 |
|
|
scanout[x][RED] = getc(stdin); |
132 |
|
|
scanout[x][GRN] = getc(stdin); |
133 |
|
|
scanout[x][BLU] = getc(stdin); |
134 |
|
|
} |
135 |
|
|
if (feof(stdin) | ferror(stdin)) |
136 |
greg |
2.1 |
quiterr("error reading AVS image"); |
137 |
|
|
/* undo gamma */ |
138 |
|
|
gambs_colrs(scanout, xmax); |
139 |
|
|
if (bradj) /* adjust exposure */ |
140 |
|
|
shiftcolrs(scanout, xmax, bradj); |
141 |
|
|
if (fwritecolrs(scanout, xmax, stdout) < 0) |
142 |
|
|
quiterr("error writing Radiance picture"); |
143 |
|
|
} |
144 |
|
|
/* free scanline */ |
145 |
greg |
2.9 |
free((void *)scanout); |
146 |
greg |
2.1 |
} |
147 |
|
|
|
148 |
|
|
|
149 |
|
|
ra2avs() /* convert Radiance scanlines to 24-bit */ |
150 |
|
|
{ |
151 |
|
|
COLR *scanin; |
152 |
|
|
register int x; |
153 |
|
|
int y; |
154 |
|
|
/* allocate scanline */ |
155 |
|
|
scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
156 |
|
|
if (scanin == NULL) |
157 |
|
|
quiterr("out of memory in ra2avs"); |
158 |
|
|
/* convert image */ |
159 |
|
|
for (y = ymax-1; y >= 0; y--) { |
160 |
|
|
if (freadcolrs(scanin, xmax, stdin) < 0) |
161 |
|
|
quiterr("error reading Radiance picture"); |
162 |
|
|
if (bradj) /* adjust exposure */ |
163 |
|
|
shiftcolrs(scanin, xmax, bradj); |
164 |
|
|
colrs_gambs(scanin, xmax); /* gamma correction */ |
165 |
|
|
for (x = 0; x < xmax; x++) { |
166 |
|
|
putc(0, stdout); /* no alpha */ |
167 |
|
|
putc(scanin[x][RED], stdout); |
168 |
|
|
putc(scanin[x][GRN], stdout); |
169 |
|
|
putc(scanin[x][BLU], stdout); |
170 |
|
|
} |
171 |
|
|
if (ferror(stdout)) |
172 |
|
|
quiterr("error writing AVS file"); |
173 |
|
|
} |
174 |
|
|
/* free scanline */ |
175 |
greg |
2.9 |
free((void *)scanin); |
176 |
greg |
2.1 |
} |