1 |
greg |
2.1 |
#ifndef lint |
2 |
greg |
2.12 |
static const char RCSid[] = "$Id: ra_xyze.c,v 2.11 2016/08/18 00:52:48 greg Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
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/* |
5 |
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* Program to convert between RADIANCE RGBE and XYZE formats |
6 |
greg |
2.6 |
* Added white-balance adjustment 10/01 (GW). |
7 |
greg |
2.1 |
*/ |
8 |
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9 |
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#include <stdio.h> |
10 |
greg |
2.6 |
#include <string.h> |
11 |
greg |
2.1 |
#include <math.h> |
12 |
greg |
2.6 |
#include <time.h> |
13 |
schorsch |
2.7 |
|
14 |
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#include "platform.h" |
15 |
greg |
2.1 |
#include "color.h" |
16 |
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#include "resolu.h" |
17 |
greg |
2.11 |
#include "rtio.h" |
18 |
greg |
2.1 |
|
19 |
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int rgbinp = -1; /* input is RGBE? */ |
20 |
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int rgbout = 0; /* output should be RGBE? */ |
21 |
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RGBPRIMS inprims = STDPRIMS; /* input primaries */ |
22 |
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RGBPRIMS outprims = STDPRIMS; /* output primaries */ |
23 |
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double expcomp = 1.0; /* exposure compensation */ |
24 |
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int doflat = -1; /* produce flat file? */ |
25 |
greg |
2.10 |
double origexp = -1.0; /* original exposure */ |
26 |
greg |
2.1 |
char *progname; |
27 |
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28 |
schorsch |
2.8 |
static gethfunc headline; |
29 |
schorsch |
2.9 |
static void quiterr(char *err); |
30 |
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static void convert(void); |
31 |
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32 |
greg |
2.1 |
|
33 |
schorsch |
2.8 |
|
34 |
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static int |
35 |
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headline( /* process header line */ |
36 |
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char *s, |
37 |
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void *p |
38 |
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) |
39 |
greg |
2.1 |
{ |
40 |
greg |
2.12 |
char fmt[MAXFMTLEN]; |
41 |
greg |
2.1 |
|
42 |
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if (formatval(fmt, s)) { /* check if format string */ |
43 |
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if (!strcmp(fmt,COLRFMT)) |
44 |
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rgbinp = 1; |
45 |
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else if (!strcmp(fmt,CIEFMT)) |
46 |
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rgbinp = 0; |
47 |
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else |
48 |
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rgbinp = -2; |
49 |
gwlarson |
2.5 |
return(0); /* don't echo */ |
50 |
greg |
2.1 |
} |
51 |
greg |
2.10 |
if (origexp > 0.0 && isexpos(s)) { |
52 |
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origexp *= exposval(s); |
53 |
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return(0); /* don't echo */ |
54 |
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} |
55 |
greg |
2.1 |
if (isprims(s)) { /* get input primaries */ |
56 |
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primsval(inprims, s); |
57 |
gwlarson |
2.5 |
return(0); /* don't echo */ |
58 |
greg |
2.1 |
} |
59 |
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/* should I grok colcorr also? */ |
60 |
gwlarson |
2.5 |
return(fputs(s, stdout)); |
61 |
greg |
2.1 |
} |
62 |
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63 |
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64 |
schorsch |
2.9 |
int |
65 |
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main(int argc, char *argv[]) |
66 |
greg |
2.1 |
{ |
67 |
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int i; |
68 |
schorsch |
2.7 |
SET_DEFAULT_BINARY(); |
69 |
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SET_FILE_BINARY(stdin); |
70 |
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SET_FILE_BINARY(stdout); |
71 |
greg |
2.1 |
progname = argv[0]; |
72 |
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73 |
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for (i = 1; i < argc; i++) |
74 |
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if (argv[i][0] == '-') |
75 |
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switch (argv[i][1]) { |
76 |
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case 'c': /* rle-compressed output */ |
77 |
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doflat = 0; |
78 |
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break; |
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case 'u': /* flat output */ |
80 |
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doflat = 1; |
81 |
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break; |
82 |
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case 'r': /* RGBE output */ |
83 |
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rgbout = 1; |
84 |
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break; |
85 |
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case 'p': /* RGB primaries */ |
86 |
greg |
2.2 |
if (i+8 >= argc) |
87 |
greg |
2.1 |
goto userr; |
88 |
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outprims[RED][CIEX] = atof(argv[++i]); |
89 |
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outprims[RED][CIEY] = atof(argv[++i]); |
90 |
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outprims[GRN][CIEX] = atof(argv[++i]); |
91 |
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outprims[GRN][CIEY] = atof(argv[++i]); |
92 |
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outprims[BLU][CIEX] = atof(argv[++i]); |
93 |
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outprims[BLU][CIEY] = atof(argv[++i]); |
94 |
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outprims[WHT][CIEX] = atof(argv[++i]); |
95 |
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outprims[WHT][CIEY] = atof(argv[++i]); |
96 |
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break; |
97 |
greg |
2.10 |
case 'o': /* original exposure */ |
98 |
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origexp = 1.0; |
99 |
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break; |
100 |
greg |
2.1 |
case 'e': /* exposure compensation */ |
101 |
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expcomp = atof(argv[++i]); |
102 |
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if (argv[i][0] == '+' || argv[i][0] == '-') |
103 |
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expcomp = pow(2., expcomp); |
104 |
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break; |
105 |
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default: |
106 |
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goto userr; |
107 |
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} |
108 |
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else |
109 |
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break; |
110 |
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111 |
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if (doflat < 0) |
112 |
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doflat = !rgbout; |
113 |
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if (i < argc-2) |
114 |
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goto userr; |
115 |
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if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
116 |
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fprintf(stderr, "%s: can't open input \"%s\"\n", |
117 |
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progname, argv[i]); |
118 |
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exit(1); |
119 |
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} |
120 |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
121 |
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fprintf(stderr, "%s: can't open output \"%s\"\n", |
122 |
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progname, argv[i+1]); |
123 |
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exit(1); |
124 |
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} |
125 |
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getheader(stdin, headline, NULL); |
126 |
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if (rgbinp == -2) |
127 |
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quiterr("unrecognized input file format"); |
128 |
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if (rgbinp == -1) |
129 |
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rgbinp = !rgbout; |
130 |
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printargs(argc, argv, stdout); /* add to header */ |
131 |
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convert(); /* convert picture */ |
132 |
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exit(0); |
133 |
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userr: |
134 |
greg |
2.10 |
fprintf(stderr, "Usage: %s [-r][-o][-e exp][-c|-u]", progname); |
135 |
greg |
2.1 |
fprintf(stderr, "[-p rx ry gx gy bx by wx wy] [input [output]]\n"); |
136 |
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exit(1); |
137 |
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} |
138 |
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139 |
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140 |
schorsch |
2.9 |
static void |
141 |
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quiterr( /* print message and exit */ |
142 |
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char *err |
143 |
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) |
144 |
greg |
2.1 |
{ |
145 |
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if (err != NULL) { |
146 |
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fprintf(stderr, "%s: %s\n", progname, err); |
147 |
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exit(1); |
148 |
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} |
149 |
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exit(0); |
150 |
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} |
151 |
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152 |
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153 |
schorsch |
2.9 |
static void |
154 |
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convert(void) /* convert to XYZE or RGBE picture */ |
155 |
greg |
2.1 |
{ |
156 |
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int order; |
157 |
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int xmax, ymax; |
158 |
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COLORMAT xfm; |
159 |
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register COLOR *scanin; |
160 |
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register COLR *scanout; |
161 |
greg |
2.10 |
double exp2do = expcomp; |
162 |
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double exp2report = expcomp; |
163 |
greg |
2.1 |
int y; |
164 |
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register int x; |
165 |
greg |
2.10 |
/* recover original? */ |
166 |
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if (origexp > 0.0) |
167 |
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exp2do /= origexp; |
168 |
greg |
2.1 |
/* compute transform */ |
169 |
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if (rgbout) { |
170 |
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if (rgbinp) { /* RGBE -> RGBE */ |
171 |
greg |
2.6 |
comprgb2rgbWBmat(xfm, inprims, outprims); |
172 |
greg |
2.1 |
} else { /* XYZE -> RGBE */ |
173 |
greg |
2.6 |
compxyz2rgbWBmat(xfm, outprims); |
174 |
greg |
2.10 |
if (origexp > 0.0) |
175 |
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exp2do /= WHTEFFICACY; |
176 |
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else |
177 |
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exp2report *= WHTEFFICACY; |
178 |
greg |
2.1 |
} |
179 |
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} else { |
180 |
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if (rgbinp) { /* RGBE -> XYZE */ |
181 |
greg |
2.6 |
comprgb2xyzWBmat(xfm, inprims); |
182 |
greg |
2.10 |
if (origexp > 0.0) |
183 |
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exp2do *= WHTEFFICACY; |
184 |
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else |
185 |
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exp2report /= WHTEFFICACY; |
186 |
greg |
2.1 |
} else { /* XYZE -> XYZE */ |
187 |
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for (y = 0; y < 3; y++) |
188 |
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for (x = 0; x < 3; x++) |
189 |
gregl |
2.4 |
xfm[y][x] = x==y ? 1. : 0.; |
190 |
greg |
2.1 |
} |
191 |
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} |
192 |
gregl |
2.4 |
for (y = 0; y < 3; y++) |
193 |
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for (x = 0; x < 3; x++) |
194 |
greg |
2.10 |
xfm[y][x] *= exp2do; |
195 |
greg |
2.1 |
/* get input resolution */ |
196 |
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if ((order = fgetresolu(&xmax, &ymax, stdin)) < 0) |
197 |
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quiterr("bad picture format"); |
198 |
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/* complete output header */ |
199 |
greg |
2.10 |
if ((exp2report < 0.99) | (exp2report > 1.01)) |
200 |
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fputexpos(exp2report, stdout); |
201 |
greg |
2.1 |
if (rgbout) { |
202 |
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fputprims(outprims, stdout); |
203 |
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fputformat(COLRFMT, stdout); |
204 |
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} else |
205 |
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fputformat(CIEFMT, stdout); |
206 |
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putc('\n', stdout); |
207 |
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fputresolu(order, xmax, ymax, stdout); |
208 |
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/* allocate scanline */ |
209 |
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scanin = (COLOR *)malloc(xmax*sizeof(COLOR)); |
210 |
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if (scanin == NULL) |
211 |
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quiterr("out of memory in convert"); |
212 |
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scanout = doflat ? (COLR *)malloc(xmax*sizeof(COLR)) : NULL; |
213 |
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/* convert image */ |
214 |
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for (y = 0; y < ymax; y++) { |
215 |
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if (freadscan(scanin, xmax, stdin) < 0) |
216 |
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quiterr("error reading input picture"); |
217 |
greg |
2.3 |
for (x = 0; x < xmax; x++) { |
218 |
greg |
2.1 |
colortrans(scanin[x], xfm, scanin[x]); |
219 |
greg |
2.3 |
if (rgbout) |
220 |
|
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clipgamut(scanin[x], bright(scanin[x]), |
221 |
|
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CGAMUT_LOWER, cblack, cwhite); |
222 |
|
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} |
223 |
greg |
2.1 |
if (scanout != NULL) { |
224 |
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for (x = 0; x < xmax; x++) |
225 |
|
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setcolr(scanout[x], colval(scanin[x],RED), |
226 |
|
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colval(scanin[x],GRN), |
227 |
|
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colval(scanin[x],BLU)); |
228 |
greg |
2.11 |
putbinary((char *)scanout, sizeof(COLR), xmax, stdout); |
229 |
greg |
2.1 |
} else |
230 |
|
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fwritescan(scanin, xmax, stdout); |
231 |
|
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if (ferror(stdout)) |
232 |
|
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quiterr("error writing output picture"); |
233 |
|
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} |
234 |
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/* free scanline */ |
235 |
greg |
2.6 |
free((void *)scanin); |
236 |
greg |
2.1 |
if (scanout != NULL) |
237 |
greg |
2.6 |
free((void *)scanout); |
238 |
greg |
2.1 |
} |