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 |
#endif |
31 |
greg |
1.1 |
|
32 |
greg |
2.3 |
#define goodpic(h) (my_imType(h) && my_mapType(h)) |
33 |
|
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#define my_imType(h) (((h)->dataType==IM_CMAP || (h)->dataType==IM_CCMAP) \ |
34 |
greg |
1.1 |
&& (h)->dataBits==8 && (h)->imType==0) |
35 |
greg |
2.3 |
#define my_mapType(h) ((h)->mapType==CM_HASMAP && \ |
36 |
greg |
1.1 |
((h)->CMapBits==24 || (h)->CMapBits==32)) |
37 |
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|
38 |
greg |
2.4 |
#define taralloc(h) (BYTE *)emalloc((h)->x*(h)->y) |
39 |
greg |
1.1 |
|
40 |
greg |
2.7 |
BYTE clrtab[256][3]; |
41 |
greg |
1.1 |
|
42 |
greg |
2.7 |
extern int samplefac; |
43 |
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|
44 |
greg |
1.1 |
extern char *ecalloc(), *emalloc(); |
45 |
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|
46 |
|
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extern long ftell(); |
47 |
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|
48 |
greg |
2.4 |
double gamv = 2.2; /* gamv correction */ |
49 |
greg |
1.1 |
|
50 |
greg |
1.10 |
int bradj = 0; /* brightness adjustment */ |
51 |
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52 |
greg |
1.1 |
char *progname; |
53 |
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|
54 |
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char errmsg[128]; |
55 |
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56 |
greg |
1.7 |
COLR *inl; |
57 |
greg |
1.1 |
|
58 |
greg |
2.4 |
BYTE *tarData; |
59 |
greg |
1.1 |
|
60 |
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int xmax, ymax; |
61 |
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62 |
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63 |
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main(argc, argv) |
64 |
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int argc; |
65 |
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char *argv[]; |
66 |
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{ |
67 |
greg |
2.3 |
struct hdStruct head; |
68 |
greg |
1.1 |
int dither = 1; |
69 |
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int reverse = 0; |
70 |
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int ncolors = 256; |
71 |
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int greyscale = 0; |
72 |
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int i; |
73 |
greg |
2.3 |
#ifdef MSDOS |
74 |
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extern int _fmode; |
75 |
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_fmode = O_BINARY; |
76 |
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setmode(fileno(stdin), O_BINARY); |
77 |
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setmode(fileno(stdout), O_BINARY); |
78 |
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#endif |
79 |
greg |
1.1 |
progname = argv[0]; |
80 |
greg |
2.7 |
samplefac = 0; |
81 |
greg |
1.1 |
|
82 |
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for (i = 1; i < argc; i++) |
83 |
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if (argv[i][0] == '-') |
84 |
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switch (argv[i][1]) { |
85 |
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case 'd': |
86 |
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dither = !dither; |
87 |
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break; |
88 |
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case 'g': |
89 |
greg |
2.4 |
gamv = atof(argv[++i]); |
90 |
greg |
1.1 |
break; |
91 |
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case 'r': |
92 |
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reverse = !reverse; |
93 |
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break; |
94 |
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case 'b': |
95 |
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greyscale = 1; |
96 |
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break; |
97 |
greg |
1.10 |
case 'e': |
98 |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
99 |
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goto userr; |
100 |
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bradj = atoi(argv[++i]); |
101 |
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break; |
102 |
greg |
1.1 |
case 'c': |
103 |
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ncolors = atoi(argv[++i]); |
104 |
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break; |
105 |
greg |
2.7 |
case 'n': |
106 |
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samplefac = atoi(argv[++i]); |
107 |
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break; |
108 |
greg |
1.1 |
default: |
109 |
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goto userr; |
110 |
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} |
111 |
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else |
112 |
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break; |
113 |
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114 |
greg |
2.4 |
if (i < argc-2) |
115 |
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goto userr; |
116 |
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if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
117 |
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sprintf(errmsg, "cannot open input \"%s\"", argv[i]); |
118 |
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quiterr(errmsg); |
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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sprintf(errmsg, "cannot open output \"%s\"", argv[i+1]); |
122 |
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quiterr(errmsg); |
123 |
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} |
124 |
greg |
1.1 |
if (reverse) { |
125 |
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/* get header */ |
126 |
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if (getthead(&head, NULL, stdin) < 0) |
127 |
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quiterr("bad targa file"); |
128 |
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if (!goodpic(&head)) |
129 |
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quiterr("incompatible format"); |
130 |
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xmax = head.x; |
131 |
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ymax = head.y; |
132 |
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/* put header */ |
133 |
greg |
2.6 |
newheader("RADIANCE", stdout); |
134 |
greg |
1.6 |
printargs(i, argv, stdout); |
135 |
greg |
1.9 |
fputformat(COLRFMT, stdout); |
136 |
greg |
1.1 |
putchar('\n'); |
137 |
greg |
1.12 |
fprtresolu(xmax, ymax, stdout); |
138 |
greg |
1.1 |
/* convert file */ |
139 |
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tg2ra(&head); |
140 |
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} else { |
141 |
greg |
2.4 |
if (getrhead(&head, stdin) < 0) |
142 |
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quiterr("bad Radiance input"); |
143 |
greg |
1.1 |
/* write header */ |
144 |
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putthead(&head, NULL, stdout); |
145 |
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/* convert file */ |
146 |
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if (greyscale) |
147 |
greg |
2.4 |
getgrey(ncolors); |
148 |
greg |
1.1 |
else |
149 |
greg |
2.4 |
getmapped(ncolors, dither); |
150 |
greg |
1.1 |
/* write data */ |
151 |
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writetarga(&head, tarData, stdout); |
152 |
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} |
153 |
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quiterr(NULL); |
154 |
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userr: |
155 |
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fprintf(stderr, |
156 |
greg |
2.8 |
"Usage: %s [-d][-n samp][-c ncolors][-b][-g gamv][-e +/-stops] input [output]\n", |
157 |
greg |
1.1 |
progname); |
158 |
greg |
2.4 |
fprintf(stderr, " Or: %s -r [-g gamv][-e +/-stops] [input [output]]\n", |
159 |
greg |
1.1 |
progname); |
160 |
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exit(1); |
161 |
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} |
162 |
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163 |
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164 |
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int |
165 |
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getint2(fp) /* get a 2-byte positive integer */ |
166 |
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register FILE *fp; |
167 |
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{ |
168 |
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register int b1, b2; |
169 |
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170 |
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if ((b1 = getc(fp)) == EOF || (b2 = getc(fp)) == EOF) |
171 |
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quiterr("read error"); |
172 |
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173 |
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return(b1 | b2<<8); |
174 |
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} |
175 |
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176 |
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177 |
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putint2(i, fp) /* put a 2-byte positive integer */ |
178 |
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register int i; |
179 |
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register FILE *fp; |
180 |
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{ |
181 |
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putc(i&0xff, fp); |
182 |
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putc(i>>8&0xff, fp); |
183 |
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} |
184 |
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185 |
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186 |
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quiterr(err) /* print message and exit */ |
187 |
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char *err; |
188 |
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{ |
189 |
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if (err != NULL) { |
190 |
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fprintf(stderr, "%s: %s\n", progname, err); |
191 |
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exit(1); |
192 |
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} |
193 |
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exit(0); |
194 |
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} |
195 |
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196 |
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197 |
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eputs(s) |
198 |
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char *s; |
199 |
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{ |
200 |
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fputs(s, stderr); |
201 |
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} |
202 |
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203 |
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204 |
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quit(code) |
205 |
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int code; |
206 |
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{ |
207 |
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exit(code); |
208 |
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} |
209 |
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210 |
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211 |
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getthead(hp, ip, fp) /* read header from input */ |
212 |
greg |
2.3 |
struct hdStruct *hp; |
213 |
greg |
1.1 |
char *ip; |
214 |
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register FILE *fp; |
215 |
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{ |
216 |
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int nidbytes; |
217 |
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218 |
|
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if ((nidbytes = getc(fp)) == EOF) |
219 |
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return(-1); |
220 |
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hp->mapType = getc(fp); |
221 |
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hp->dataType = getc(fp); |
222 |
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hp->mapOrig = getint2(fp); |
223 |
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hp->mapLength = getint2(fp); |
224 |
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hp->CMapBits = getc(fp); |
225 |
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hp->XOffset = getint2(fp); |
226 |
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hp->YOffset = getint2(fp); |
227 |
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hp->x = getint2(fp); |
228 |
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hp->y = getint2(fp); |
229 |
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hp->dataBits = getc(fp); |
230 |
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hp->imType = getc(fp); |
231 |
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|
232 |
|
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if (ip != NULL) |
233 |
|
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if (nidbytes) |
234 |
greg |
1.4 |
fread((char *)ip, nidbytes, 1, fp); |
235 |
greg |
1.1 |
else |
236 |
|
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*ip = '\0'; |
237 |
|
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else if (nidbytes) |
238 |
|
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fseek(fp, (long)nidbytes, 1); |
239 |
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|
240 |
|
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return(feof(fp) || ferror(fp) ? -1 : 0); |
241 |
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} |
242 |
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243 |
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244 |
|
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putthead(hp, ip, fp) /* write header to output */ |
245 |
greg |
2.3 |
struct hdStruct *hp; |
246 |
greg |
1.1 |
char *ip; |
247 |
|
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register FILE *fp; |
248 |
|
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{ |
249 |
|
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if (ip != NULL) |
250 |
|
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putc(strlen(ip), fp); |
251 |
|
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else |
252 |
|
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putc(0, fp); |
253 |
|
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putc(hp->mapType, fp); |
254 |
|
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putc(hp->dataType, fp); |
255 |
|
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putint2(hp->mapOrig, fp); |
256 |
|
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putint2(hp->mapLength, fp); |
257 |
|
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putc(hp->CMapBits, fp); |
258 |
|
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putint2(hp->XOffset, fp); |
259 |
|
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putint2(hp->YOffset, fp); |
260 |
|
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putint2(hp->x, fp); |
261 |
|
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putint2(hp->y, fp); |
262 |
|
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putc(hp->dataBits, fp); |
263 |
|
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putc(hp->imType, fp); |
264 |
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|
265 |
|
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if (ip != NULL) |
266 |
|
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fputs(ip, fp); |
267 |
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|
268 |
|
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return(ferror(fp) ? -1 : 0); |
269 |
|
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} |
270 |
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|
271 |
|
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|
272 |
greg |
2.4 |
getrhead(h, fp) /* load RADIANCE input file header */ |
273 |
greg |
1.1 |
register struct hdStruct *h; |
274 |
greg |
2.4 |
FILE *fp; |
275 |
greg |
1.1 |
{ |
276 |
greg |
1.9 |
/* get header info. */ |
277 |
greg |
2.4 |
if (checkheader(fp, COLRFMT, NULL) < 0 || |
278 |
|
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fgetresolu(&xmax, &ymax, fp) < 0) |
279 |
|
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return(-1); |
280 |
greg |
1.1 |
/* assign header */ |
281 |
|
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h->textSize = 0; |
282 |
|
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h->mapType = CM_HASMAP; |
283 |
|
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h->dataType = IM_CMAP; |
284 |
|
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h->mapOrig = 0; |
285 |
|
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h->mapLength = 256; |
286 |
|
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h->CMapBits = 24; |
287 |
|
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h->XOffset = 0; |
288 |
|
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h->YOffset = 0; |
289 |
|
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h->x = xmax; |
290 |
|
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h->y = ymax; |
291 |
|
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h->dataBits = 8; |
292 |
|
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h->imType = 0; |
293 |
|
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/* allocate scanline */ |
294 |
greg |
1.7 |
inl = (COLR *)emalloc(xmax*sizeof(COLR)); |
295 |
greg |
1.1 |
/* allocate targa data */ |
296 |
|
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tarData = taralloc(h); |
297 |
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|
298 |
greg |
2.4 |
return(0); |
299 |
greg |
1.1 |
} |
300 |
|
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|
301 |
|
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|
302 |
|
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tg2ra(hp) /* targa file to RADIANCE file */ |
303 |
greg |
2.3 |
struct hdStruct *hp; |
304 |
greg |
1.1 |
{ |
305 |
|
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union { |
306 |
|
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BYTE c3[256][3]; |
307 |
|
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BYTE c4[256][4]; |
308 |
|
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} map; |
309 |
|
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COLR ctab[256]; |
310 |
|
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COLR *scanline; |
311 |
|
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register int i, j; |
312 |
|
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|
313 |
|
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/* get color table */ |
314 |
greg |
1.12 |
if ((hp->CMapBits==24 ? fread((char *)(map.c3+hp->mapOrig), |
315 |
|
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3*hp->mapLength,1,stdin) : |
316 |
|
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fread((char *)(map.c4+hp->mapOrig), |
317 |
|
|
4*hp->mapLength,1,stdin)) != 1) |
318 |
greg |
1.1 |
quiterr("error reading color table"); |
319 |
|
|
/* convert table */ |
320 |
|
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for (i = hp->mapOrig; i < hp->mapOrig+hp->mapLength; i++) |
321 |
|
|
if (hp->CMapBits == 24) |
322 |
|
|
setcolr(ctab[i], |
323 |
greg |
2.4 |
pow((map.c3[i][2]+.5)/256.,gamv), |
324 |
|
|
pow((map.c3[i][1]+.5)/256.,gamv), |
325 |
|
|
pow((map.c3[i][0]+.5)/256.,gamv)); |
326 |
greg |
1.1 |
else |
327 |
|
|
setcolr(ctab[i], |
328 |
greg |
2.4 |
pow((map.c4[i][3]+.5)/256.,gamv), |
329 |
|
|
pow((map.c4[i][2]+.5)/256.,gamv), |
330 |
|
|
pow((map.c4[i][1]+.5)/256.,gamv)); |
331 |
greg |
1.10 |
if (bradj) |
332 |
|
|
shiftcolrs(ctab, 256, bradj); |
333 |
greg |
1.1 |
/* allocate targa data */ |
334 |
|
|
tarData = taralloc(hp); |
335 |
|
|
/* get data */ |
336 |
|
|
readtarga(hp, tarData, stdin); |
337 |
|
|
/* allocate input scanline */ |
338 |
|
|
scanline = (COLR *)emalloc(xmax*sizeof(COLR)); |
339 |
|
|
/* convert file */ |
340 |
|
|
for (i = ymax-1; i >= 0; i--) { |
341 |
|
|
for (j = 0; j < xmax; j++) |
342 |
|
|
copycolr(scanline[j], ctab[tarData[i*xmax+j]]); |
343 |
|
|
if (fwritecolrs(scanline, xmax, stdout) < 0) |
344 |
|
|
quiterr("error writing RADIANCE file"); |
345 |
|
|
} |
346 |
|
|
free((char *)scanline); |
347 |
|
|
free((char *)tarData); |
348 |
|
|
} |
349 |
|
|
|
350 |
|
|
|
351 |
greg |
2.4 |
getmapped(nc, dith) /* read in and quantize image */ |
352 |
|
|
int nc; /* number of colors to use */ |
353 |
|
|
int dith; /* use dithering? */ |
354 |
greg |
1.1 |
{ |
355 |
greg |
2.4 |
long fpos; |
356 |
|
|
register int y; |
357 |
greg |
1.1 |
|
358 |
greg |
2.4 |
setcolrgam(gamv); |
359 |
|
|
fpos = ftell(stdin); |
360 |
greg |
2.7 |
if ((samplefac ? neu_init(xmax*ymax) : new_histo(xmax*ymax)) == -1) |
361 |
|
|
quiterr("cannot initialized histogram"); |
362 |
greg |
2.4 |
for (y = ymax-1; y >= 0; y--) { |
363 |
|
|
if (freadcolrs(inl, xmax, stdin) < 0) |
364 |
|
|
quiterr("error reading Radiance input"); |
365 |
|
|
if (bradj) |
366 |
|
|
shiftcolrs(inl, xmax, bradj); |
367 |
|
|
colrs_gambs(inl, xmax); |
368 |
greg |
2.7 |
if (samplefac) |
369 |
|
|
neu_colrs(inl, xmax); |
370 |
|
|
else |
371 |
|
|
cnt_colrs(inl, xmax); |
372 |
greg |
1.1 |
} |
373 |
greg |
2.4 |
if (fseek(stdin, fpos, 0) == EOF) |
374 |
|
|
quiterr("Radiance input must be from a file"); |
375 |
greg |
2.7 |
if (samplefac) /* map colors */ |
376 |
|
|
neu_clrtab(nc); |
377 |
|
|
else |
378 |
|
|
new_clrtab(nc); |
379 |
greg |
2.4 |
for (y = ymax-1; y >= 0; y--) { |
380 |
|
|
if (freadcolrs(inl, xmax, stdin) < 0) |
381 |
|
|
quiterr("error reading Radiance input"); |
382 |
|
|
if (bradj) |
383 |
|
|
shiftcolrs(inl, xmax, bradj); |
384 |
|
|
colrs_gambs(inl, xmax); |
385 |
greg |
2.7 |
if (samplefac) |
386 |
|
|
if (dith) |
387 |
|
|
neu_dith_colrs(tarData+y*xmax, inl, xmax); |
388 |
|
|
else |
389 |
|
|
neu_map_colrs(tarData+y*xmax, inl, xmax); |
390 |
greg |
2.4 |
else |
391 |
greg |
2.7 |
if (dith) |
392 |
|
|
dith_colrs(tarData+y*xmax, inl, xmax); |
393 |
|
|
else |
394 |
|
|
map_colrs(tarData+y*xmax, inl, xmax); |
395 |
greg |
2.4 |
} |
396 |
greg |
1.1 |
} |
397 |
|
|
|
398 |
|
|
|
399 |
greg |
2.4 |
getgrey(nc) /* read in and convert to greyscale image */ |
400 |
|
|
int nc; /* number of colors to use */ |
401 |
greg |
1.1 |
{ |
402 |
greg |
2.4 |
int y; |
403 |
|
|
register BYTE *dp; |
404 |
|
|
register int x; |
405 |
|
|
|
406 |
|
|
setcolrgam(gamv); |
407 |
|
|
dp = tarData+xmax*ymax;; |
408 |
|
|
for (y = ymax-1; y >= 0; y--) { |
409 |
|
|
if (freadcolrs(inl, xmax, stdin) < 0) |
410 |
|
|
quiterr("error reading Radiance input"); |
411 |
|
|
if (bradj) |
412 |
|
|
shiftcolrs(inl, xmax, bradj); |
413 |
greg |
2.5 |
x = xmax; |
414 |
|
|
while (x--) |
415 |
|
|
inl[x][GRN] = normbright(inl[x]); |
416 |
greg |
2.4 |
colrs_gambs(inl, xmax); |
417 |
|
|
x = xmax; |
418 |
|
|
if (nc < 256) |
419 |
|
|
while (x--) |
420 |
greg |
2.5 |
*--dp = ((long)inl[x][GRN]*nc+nc/2)>>8; |
421 |
greg |
2.4 |
else |
422 |
|
|
while (x--) |
423 |
greg |
2.5 |
*--dp = inl[x][GRN]; |
424 |
greg |
2.4 |
} |
425 |
|
|
for (x = 0; x < nc; x++) |
426 |
|
|
clrtab[x][RED] = clrtab[x][GRN] = |
427 |
greg |
2.5 |
clrtab[x][BLU] = ((long)x*256+128)/nc; |
428 |
greg |
1.1 |
} |
429 |
|
|
|
430 |
|
|
|
431 |
|
|
writetarga(h, d, fp) /* write out targa data */ |
432 |
greg |
2.3 |
struct hdStruct *h; |
433 |
greg |
2.4 |
BYTE *d; |
434 |
greg |
1.1 |
FILE *fp; |
435 |
|
|
{ |
436 |
greg |
2.4 |
register int i, j; |
437 |
|
|
|
438 |
|
|
for (i = 0; i < h->mapLength; i++) /* write color map */ |
439 |
|
|
for (j = 2; j >= 0; j--) |
440 |
|
|
putc(clrtab[i][j], fp); |
441 |
greg |
1.1 |
if (h->dataType == IM_CMAP) { /* uncompressed */ |
442 |
greg |
2.4 |
if (fwrite((char *)d,h->x*sizeof(BYTE),h->y,fp) != h->y) |
443 |
greg |
1.1 |
quiterr("error writing targa file"); |
444 |
|
|
return; |
445 |
|
|
} |
446 |
|
|
quiterr("unsupported output type"); |
447 |
|
|
} |
448 |
|
|
|
449 |
|
|
|
450 |
|
|
readtarga(h, data, fp) /* read in targa data */ |
451 |
greg |
2.3 |
struct hdStruct *h; |
452 |
greg |
2.4 |
BYTE *data; |
453 |
greg |
1.1 |
FILE *fp; |
454 |
|
|
{ |
455 |
|
|
register int cnt, c; |
456 |
greg |
2.4 |
register BYTE *dp; |
457 |
greg |
1.1 |
|
458 |
|
|
if (h->dataType == IM_CMAP) { /* uncompressed */ |
459 |
greg |
2.4 |
if (fread((char *)data,h->x*sizeof(BYTE),h->y,fp) != h->y) |
460 |
greg |
1.1 |
goto readerr; |
461 |
|
|
return; |
462 |
|
|
} |
463 |
|
|
for (dp = data; dp < data+h->x*h->y; ) { |
464 |
|
|
if ((c = getc(fp)) == EOF) |
465 |
|
|
goto readerr; |
466 |
|
|
cnt = (c & 0x7f) + 1; |
467 |
|
|
if (c & 0x80) { /* repeated pixel */ |
468 |
|
|
if ((c = getc(fp)) == EOF) |
469 |
|
|
goto readerr; |
470 |
|
|
while (cnt--) |
471 |
|
|
*dp++ = c; |
472 |
|
|
} else /* non-repeating pixels */ |
473 |
|
|
while (cnt--) { |
474 |
|
|
if ((c = getc(fp)) == EOF) |
475 |
|
|
goto readerr; |
476 |
|
|
*dp++ = c; |
477 |
|
|
} |
478 |
|
|
} |
479 |
|
|
return; |
480 |
|
|
readerr: |
481 |
|
|
quiterr("error reading targa file"); |
482 |
|
|
} |