1 |
greg |
2.3 |
/* Copyright (c) 1992 Regents of the University of California */ |
2 |
greg |
1.1 |
|
3 |
|
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#ifndef lint |
4 |
|
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static char SCCSid[] = "$SunId$ LBL"; |
5 |
|
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#endif |
6 |
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|
7 |
|
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/* |
8 |
|
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* ra_t8.c - program to convert between RADIANCE and |
9 |
|
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* Targa 8-bit color-mapped images. |
10 |
|
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* |
11 |
|
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* 8/22/88 Adapted from ra_pr.c |
12 |
|
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*/ |
13 |
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14 |
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#include <stdio.h> |
15 |
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16 |
|
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#include "color.h" |
17 |
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|
18 |
greg |
1.12 |
#include "resolu.h" |
19 |
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|
20 |
greg |
1.1 |
#include "targa.h" |
21 |
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22 |
greg |
2.3 |
#ifdef MSDOS |
23 |
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#include <fcntl.h> |
24 |
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#endif |
25 |
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26 |
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#include <math.h> |
27 |
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28 |
|
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#ifndef BSD |
29 |
|
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#define bcopy(s,d,n) (void)memcpy(d,s,n) |
30 |
greg |
1.4 |
extern char *memcpy(); |
31 |
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#endif |
32 |
greg |
1.1 |
|
33 |
greg |
2.3 |
#define goodpic(h) (my_imType(h) && my_mapType(h)) |
34 |
|
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#define my_imType(h) (((h)->dataType==IM_CMAP || (h)->dataType==IM_CCMAP) \ |
35 |
greg |
1.1 |
&& (h)->dataBits==8 && (h)->imType==0) |
36 |
greg |
2.3 |
#define my_mapType(h) ((h)->mapType==CM_HASMAP && \ |
37 |
greg |
1.1 |
((h)->CMapBits==24 || (h)->CMapBits==32)) |
38 |
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|
39 |
greg |
2.4 |
#define taralloc(h) (BYTE *)emalloc((h)->x*(h)->y) |
40 |
greg |
1.1 |
|
41 |
greg |
2.4 |
extern BYTE clrtab[][3]; |
42 |
greg |
1.1 |
|
43 |
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extern char *ecalloc(), *emalloc(); |
44 |
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|
45 |
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extern long ftell(); |
46 |
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|
47 |
greg |
2.4 |
double gamv = 2.2; /* gamv correction */ |
48 |
greg |
1.1 |
|
49 |
greg |
1.10 |
int bradj = 0; /* brightness adjustment */ |
50 |
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51 |
greg |
1.1 |
char *progname; |
52 |
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53 |
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char errmsg[128]; |
54 |
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|
55 |
greg |
1.7 |
COLR *inl; |
56 |
greg |
1.1 |
|
57 |
greg |
2.4 |
BYTE *tarData; |
58 |
greg |
1.1 |
|
59 |
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int xmax, ymax; |
60 |
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61 |
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62 |
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main(argc, argv) |
63 |
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int argc; |
64 |
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char *argv[]; |
65 |
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{ |
66 |
greg |
2.3 |
struct hdStruct head; |
67 |
greg |
1.1 |
int dither = 1; |
68 |
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int reverse = 0; |
69 |
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int ncolors = 256; |
70 |
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int greyscale = 0; |
71 |
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int i; |
72 |
greg |
2.3 |
#ifdef MSDOS |
73 |
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extern int _fmode; |
74 |
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_fmode = O_BINARY; |
75 |
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setmode(fileno(stdin), O_BINARY); |
76 |
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setmode(fileno(stdout), O_BINARY); |
77 |
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#endif |
78 |
greg |
1.1 |
progname = argv[0]; |
79 |
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80 |
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for (i = 1; i < argc; i++) |
81 |
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if (argv[i][0] == '-') |
82 |
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switch (argv[i][1]) { |
83 |
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case 'd': |
84 |
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dither = !dither; |
85 |
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break; |
86 |
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case 'g': |
87 |
greg |
2.4 |
gamv = atof(argv[++i]); |
88 |
greg |
1.1 |
break; |
89 |
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case 'r': |
90 |
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reverse = !reverse; |
91 |
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break; |
92 |
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case 'b': |
93 |
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greyscale = 1; |
94 |
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break; |
95 |
greg |
1.10 |
case 'e': |
96 |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
97 |
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goto userr; |
98 |
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bradj = atoi(argv[++i]); |
99 |
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break; |
100 |
greg |
1.1 |
case 'c': |
101 |
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ncolors = atoi(argv[++i]); |
102 |
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break; |
103 |
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default: |
104 |
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goto userr; |
105 |
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} |
106 |
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else |
107 |
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break; |
108 |
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109 |
greg |
2.4 |
if (i < argc-2) |
110 |
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goto userr; |
111 |
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if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
112 |
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sprintf(errmsg, "cannot open input \"%s\"", argv[i]); |
113 |
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quiterr(errmsg); |
114 |
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} |
115 |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
116 |
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sprintf(errmsg, "cannot open output \"%s\"", argv[i+1]); |
117 |
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quiterr(errmsg); |
118 |
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} |
119 |
greg |
1.1 |
if (reverse) { |
120 |
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/* get header */ |
121 |
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if (getthead(&head, NULL, stdin) < 0) |
122 |
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quiterr("bad targa file"); |
123 |
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if (!goodpic(&head)) |
124 |
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quiterr("incompatible format"); |
125 |
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xmax = head.x; |
126 |
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ymax = head.y; |
127 |
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/* put header */ |
128 |
greg |
1.6 |
printargs(i, argv, stdout); |
129 |
greg |
1.9 |
fputformat(COLRFMT, stdout); |
130 |
greg |
1.1 |
putchar('\n'); |
131 |
greg |
1.12 |
fprtresolu(xmax, ymax, stdout); |
132 |
greg |
1.1 |
/* convert file */ |
133 |
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tg2ra(&head); |
134 |
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} else { |
135 |
greg |
2.4 |
if (getrhead(&head, stdin) < 0) |
136 |
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quiterr("bad Radiance input"); |
137 |
greg |
1.1 |
/* write header */ |
138 |
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putthead(&head, NULL, stdout); |
139 |
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/* convert file */ |
140 |
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if (greyscale) |
141 |
greg |
2.4 |
getgrey(ncolors); |
142 |
greg |
1.1 |
else |
143 |
greg |
2.4 |
getmapped(ncolors, dither); |
144 |
greg |
1.1 |
/* write data */ |
145 |
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writetarga(&head, tarData, stdout); |
146 |
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} |
147 |
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quiterr(NULL); |
148 |
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userr: |
149 |
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fprintf(stderr, |
150 |
greg |
2.4 |
"Usage: %s [-d][-c ncolors][-b][-g gamv][-e +/-stops] input [output]\n", |
151 |
greg |
1.1 |
progname); |
152 |
greg |
2.4 |
fprintf(stderr, " Or: %s -r [-g gamv][-e +/-stops] [input [output]]\n", |
153 |
greg |
1.1 |
progname); |
154 |
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exit(1); |
155 |
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} |
156 |
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157 |
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158 |
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int |
159 |
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getint2(fp) /* get a 2-byte positive integer */ |
160 |
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register FILE *fp; |
161 |
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{ |
162 |
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register int b1, b2; |
163 |
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164 |
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if ((b1 = getc(fp)) == EOF || (b2 = getc(fp)) == EOF) |
165 |
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quiterr("read error"); |
166 |
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167 |
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return(b1 | b2<<8); |
168 |
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} |
169 |
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170 |
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171 |
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putint2(i, fp) /* put a 2-byte positive integer */ |
172 |
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register int i; |
173 |
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register FILE *fp; |
174 |
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{ |
175 |
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putc(i&0xff, fp); |
176 |
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putc(i>>8&0xff, fp); |
177 |
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} |
178 |
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179 |
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180 |
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quiterr(err) /* print message and exit */ |
181 |
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char *err; |
182 |
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{ |
183 |
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if (err != NULL) { |
184 |
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fprintf(stderr, "%s: %s\n", progname, err); |
185 |
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exit(1); |
186 |
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} |
187 |
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exit(0); |
188 |
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} |
189 |
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190 |
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191 |
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eputs(s) |
192 |
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char *s; |
193 |
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{ |
194 |
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fputs(s, stderr); |
195 |
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} |
196 |
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197 |
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198 |
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quit(code) |
199 |
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int code; |
200 |
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{ |
201 |
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exit(code); |
202 |
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} |
203 |
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204 |
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205 |
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getthead(hp, ip, fp) /* read header from input */ |
206 |
greg |
2.3 |
struct hdStruct *hp; |
207 |
greg |
1.1 |
char *ip; |
208 |
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register FILE *fp; |
209 |
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{ |
210 |
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int nidbytes; |
211 |
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212 |
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if ((nidbytes = getc(fp)) == EOF) |
213 |
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return(-1); |
214 |
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hp->mapType = getc(fp); |
215 |
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hp->dataType = getc(fp); |
216 |
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hp->mapOrig = getint2(fp); |
217 |
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hp->mapLength = getint2(fp); |
218 |
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hp->CMapBits = getc(fp); |
219 |
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hp->XOffset = getint2(fp); |
220 |
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hp->YOffset = getint2(fp); |
221 |
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hp->x = getint2(fp); |
222 |
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hp->y = getint2(fp); |
223 |
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hp->dataBits = getc(fp); |
224 |
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hp->imType = getc(fp); |
225 |
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226 |
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if (ip != NULL) |
227 |
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if (nidbytes) |
228 |
greg |
1.4 |
fread((char *)ip, nidbytes, 1, fp); |
229 |
greg |
1.1 |
else |
230 |
|
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*ip = '\0'; |
231 |
|
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else if (nidbytes) |
232 |
|
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fseek(fp, (long)nidbytes, 1); |
233 |
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|
234 |
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return(feof(fp) || ferror(fp) ? -1 : 0); |
235 |
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} |
236 |
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237 |
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238 |
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putthead(hp, ip, fp) /* write header to output */ |
239 |
greg |
2.3 |
struct hdStruct *hp; |
240 |
greg |
1.1 |
char *ip; |
241 |
|
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register FILE *fp; |
242 |
|
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{ |
243 |
|
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if (ip != NULL) |
244 |
|
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putc(strlen(ip), fp); |
245 |
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else |
246 |
|
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putc(0, fp); |
247 |
|
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putc(hp->mapType, fp); |
248 |
|
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putc(hp->dataType, fp); |
249 |
|
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putint2(hp->mapOrig, fp); |
250 |
|
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putint2(hp->mapLength, fp); |
251 |
|
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putc(hp->CMapBits, fp); |
252 |
|
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putint2(hp->XOffset, fp); |
253 |
|
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putint2(hp->YOffset, fp); |
254 |
|
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putint2(hp->x, fp); |
255 |
|
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putint2(hp->y, fp); |
256 |
|
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putc(hp->dataBits, fp); |
257 |
|
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putc(hp->imType, fp); |
258 |
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|
259 |
|
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if (ip != NULL) |
260 |
|
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fputs(ip, fp); |
261 |
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|
262 |
|
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return(ferror(fp) ? -1 : 0); |
263 |
|
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} |
264 |
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|
265 |
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|
266 |
greg |
2.4 |
getrhead(h, fp) /* load RADIANCE input file header */ |
267 |
greg |
1.1 |
register struct hdStruct *h; |
268 |
greg |
2.4 |
FILE *fp; |
269 |
greg |
1.1 |
{ |
270 |
greg |
1.9 |
/* get header info. */ |
271 |
greg |
2.4 |
if (checkheader(fp, COLRFMT, NULL) < 0 || |
272 |
|
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fgetresolu(&xmax, &ymax, fp) < 0) |
273 |
|
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return(-1); |
274 |
greg |
1.1 |
/* assign header */ |
275 |
|
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h->textSize = 0; |
276 |
|
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h->mapType = CM_HASMAP; |
277 |
|
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h->dataType = IM_CMAP; |
278 |
|
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h->mapOrig = 0; |
279 |
|
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h->mapLength = 256; |
280 |
|
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h->CMapBits = 24; |
281 |
|
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h->XOffset = 0; |
282 |
|
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h->YOffset = 0; |
283 |
|
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h->x = xmax; |
284 |
|
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h->y = ymax; |
285 |
|
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h->dataBits = 8; |
286 |
|
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h->imType = 0; |
287 |
|
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/* allocate scanline */ |
288 |
greg |
1.7 |
inl = (COLR *)emalloc(xmax*sizeof(COLR)); |
289 |
greg |
1.1 |
/* allocate targa data */ |
290 |
|
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tarData = taralloc(h); |
291 |
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|
292 |
greg |
2.4 |
return(0); |
293 |
greg |
1.1 |
} |
294 |
|
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|
295 |
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|
296 |
|
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tg2ra(hp) /* targa file to RADIANCE file */ |
297 |
greg |
2.3 |
struct hdStruct *hp; |
298 |
greg |
1.1 |
{ |
299 |
|
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union { |
300 |
|
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BYTE c3[256][3]; |
301 |
|
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BYTE c4[256][4]; |
302 |
|
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} map; |
303 |
|
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COLR ctab[256]; |
304 |
|
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COLR *scanline; |
305 |
|
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register int i, j; |
306 |
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|
307 |
|
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/* get color table */ |
308 |
greg |
1.12 |
if ((hp->CMapBits==24 ? fread((char *)(map.c3+hp->mapOrig), |
309 |
|
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3*hp->mapLength,1,stdin) : |
310 |
|
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fread((char *)(map.c4+hp->mapOrig), |
311 |
|
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4*hp->mapLength,1,stdin)) != 1) |
312 |
greg |
1.1 |
quiterr("error reading color table"); |
313 |
|
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/* convert table */ |
314 |
|
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for (i = hp->mapOrig; i < hp->mapOrig+hp->mapLength; i++) |
315 |
|
|
if (hp->CMapBits == 24) |
316 |
|
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setcolr(ctab[i], |
317 |
greg |
2.4 |
pow((map.c3[i][2]+.5)/256.,gamv), |
318 |
|
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pow((map.c3[i][1]+.5)/256.,gamv), |
319 |
|
|
pow((map.c3[i][0]+.5)/256.,gamv)); |
320 |
greg |
1.1 |
else |
321 |
|
|
setcolr(ctab[i], |
322 |
greg |
2.4 |
pow((map.c4[i][3]+.5)/256.,gamv), |
323 |
|
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pow((map.c4[i][2]+.5)/256.,gamv), |
324 |
|
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pow((map.c4[i][1]+.5)/256.,gamv)); |
325 |
greg |
1.10 |
if (bradj) |
326 |
|
|
shiftcolrs(ctab, 256, bradj); |
327 |
greg |
1.1 |
/* allocate targa data */ |
328 |
|
|
tarData = taralloc(hp); |
329 |
|
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/* get data */ |
330 |
|
|
readtarga(hp, tarData, stdin); |
331 |
|
|
/* allocate input scanline */ |
332 |
|
|
scanline = (COLR *)emalloc(xmax*sizeof(COLR)); |
333 |
|
|
/* convert file */ |
334 |
|
|
for (i = ymax-1; i >= 0; i--) { |
335 |
|
|
for (j = 0; j < xmax; j++) |
336 |
|
|
copycolr(scanline[j], ctab[tarData[i*xmax+j]]); |
337 |
|
|
if (fwritecolrs(scanline, xmax, stdout) < 0) |
338 |
|
|
quiterr("error writing RADIANCE file"); |
339 |
|
|
} |
340 |
|
|
free((char *)scanline); |
341 |
|
|
free((char *)tarData); |
342 |
|
|
} |
343 |
|
|
|
344 |
|
|
|
345 |
greg |
2.4 |
getmapped(nc, dith) /* read in and quantize image */ |
346 |
|
|
int nc; /* number of colors to use */ |
347 |
|
|
int dith; /* use dithering? */ |
348 |
greg |
1.1 |
{ |
349 |
greg |
2.4 |
long fpos; |
350 |
|
|
register int y; |
351 |
greg |
1.1 |
|
352 |
greg |
2.4 |
setcolrgam(gamv); |
353 |
|
|
fpos = ftell(stdin); |
354 |
|
|
new_histo(); /* build histogram */ |
355 |
|
|
for (y = ymax-1; y >= 0; y--) { |
356 |
|
|
if (freadcolrs(inl, xmax, stdin) < 0) |
357 |
|
|
quiterr("error reading Radiance input"); |
358 |
|
|
if (bradj) |
359 |
|
|
shiftcolrs(inl, xmax, bradj); |
360 |
|
|
colrs_gambs(inl, xmax); |
361 |
|
|
cnt_colrs(inl, xmax); |
362 |
greg |
1.1 |
} |
363 |
greg |
2.4 |
if (fseek(stdin, fpos, 0) == EOF) |
364 |
|
|
quiterr("Radiance input must be from a file"); |
365 |
|
|
new_clrtab(nc); /* map colors */ |
366 |
|
|
for (y = ymax-1; y >= 0; y--) { |
367 |
|
|
if (freadcolrs(inl, xmax, stdin) < 0) |
368 |
|
|
quiterr("error reading Radiance input"); |
369 |
|
|
if (bradj) |
370 |
|
|
shiftcolrs(inl, xmax, bradj); |
371 |
|
|
colrs_gambs(inl, xmax); |
372 |
|
|
if (dith) |
373 |
|
|
dith_colrs(tarData+y*xmax, inl, xmax); |
374 |
|
|
else |
375 |
|
|
map_colrs(tarData+y*xmax, inl, xmax); |
376 |
|
|
} |
377 |
greg |
1.1 |
} |
378 |
|
|
|
379 |
|
|
|
380 |
greg |
2.4 |
getgrey(nc) /* read in and convert to greyscale image */ |
381 |
|
|
int nc; /* number of colors to use */ |
382 |
greg |
1.1 |
{ |
383 |
greg |
2.4 |
int y; |
384 |
|
|
register BYTE *dp; |
385 |
|
|
register int x; |
386 |
|
|
|
387 |
|
|
setcolrgam(gamv); |
388 |
|
|
dp = tarData+xmax*ymax;; |
389 |
|
|
for (y = ymax-1; y >= 0; y--) { |
390 |
|
|
if (freadcolrs(inl, xmax, stdin) < 0) |
391 |
|
|
quiterr("error reading Radiance input"); |
392 |
|
|
if (bradj) |
393 |
|
|
shiftcolrs(inl, xmax, bradj); |
394 |
|
|
colrs_gambs(inl, xmax); |
395 |
|
|
x = xmax; |
396 |
|
|
if (nc < 256) |
397 |
|
|
while (x--) |
398 |
|
|
*--dp = ((long)normbright(inl[x])*nc+128)>>8; |
399 |
|
|
else |
400 |
|
|
while (x--) |
401 |
|
|
*--dp = normbright(inl[x]); |
402 |
|
|
} |
403 |
|
|
for (x = 0; x < nc; x++) |
404 |
|
|
clrtab[x][RED] = clrtab[x][GRN] = |
405 |
|
|
clrtab[x][BLU] = ((long)x*256+nc/2)/nc; |
406 |
greg |
1.1 |
} |
407 |
|
|
|
408 |
|
|
|
409 |
|
|
writetarga(h, d, fp) /* write out targa data */ |
410 |
greg |
2.3 |
struct hdStruct *h; |
411 |
greg |
2.4 |
BYTE *d; |
412 |
greg |
1.1 |
FILE *fp; |
413 |
|
|
{ |
414 |
greg |
2.4 |
register int i, j; |
415 |
|
|
|
416 |
|
|
for (i = 0; i < h->mapLength; i++) /* write color map */ |
417 |
|
|
for (j = 2; j >= 0; j--) |
418 |
|
|
putc(clrtab[i][j], fp); |
419 |
greg |
1.1 |
if (h->dataType == IM_CMAP) { /* uncompressed */ |
420 |
greg |
2.4 |
if (fwrite((char *)d,h->x*sizeof(BYTE),h->y,fp) != h->y) |
421 |
greg |
1.1 |
quiterr("error writing targa file"); |
422 |
|
|
return; |
423 |
|
|
} |
424 |
|
|
quiterr("unsupported output type"); |
425 |
|
|
} |
426 |
|
|
|
427 |
|
|
|
428 |
|
|
readtarga(h, data, fp) /* read in targa data */ |
429 |
greg |
2.3 |
struct hdStruct *h; |
430 |
greg |
2.4 |
BYTE *data; |
431 |
greg |
1.1 |
FILE *fp; |
432 |
|
|
{ |
433 |
|
|
register int cnt, c; |
434 |
greg |
2.4 |
register BYTE *dp; |
435 |
greg |
1.1 |
|
436 |
|
|
if (h->dataType == IM_CMAP) { /* uncompressed */ |
437 |
greg |
2.4 |
if (fread((char *)data,h->x*sizeof(BYTE),h->y,fp) != h->y) |
438 |
greg |
1.1 |
goto readerr; |
439 |
|
|
return; |
440 |
|
|
} |
441 |
|
|
for (dp = data; dp < data+h->x*h->y; ) { |
442 |
|
|
if ((c = getc(fp)) == EOF) |
443 |
|
|
goto readerr; |
444 |
|
|
cnt = (c & 0x7f) + 1; |
445 |
|
|
if (c & 0x80) { /* repeated pixel */ |
446 |
|
|
if ((c = getc(fp)) == EOF) |
447 |
|
|
goto readerr; |
448 |
|
|
while (cnt--) |
449 |
|
|
*dp++ = c; |
450 |
|
|
} else /* non-repeating pixels */ |
451 |
|
|
while (cnt--) { |
452 |
|
|
if ((c = getc(fp)) == EOF) |
453 |
|
|
goto readerr; |
454 |
|
|
*dp++ = c; |
455 |
|
|
} |
456 |
|
|
} |
457 |
|
|
return; |
458 |
|
|
readerr: |
459 |
|
|
quiterr("error reading targa file"); |
460 |
|
|
} |