1 |
greg |
1.1 |
/* Copyright (c) 1986 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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/* |
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* ra_t16.c - program to convert between RADIANCE and |
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* Targa 16, 24 and 32-bit images. |
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* |
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* 11/2/88 Adapted from ra_t8.c |
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*/ |
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#include <stdio.h> |
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16 |
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#include "color.h" |
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18 |
greg |
1.5 |
#include "random.h" |
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20 |
greg |
1.1 |
#include "targa.h" |
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22 |
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#define goodpic(h) (((h)->dataType==IM_RGB || (h)->dataType==IM_CRGB) \ |
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&& ((h)->dataBits==16 || (h)->dataBits==24)) |
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25 |
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#define taralloc(h) (unsigned char *)emalloc((h)->x*(h)->y*(h)->dataBits/8) |
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27 |
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#define readtarga(h,d,f) ((h)->dataBits==16 ? readt16(h,d,f) : \ |
28 |
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readt24(h,d,f)) |
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30 |
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#define writetarga(h,d,f) ((h)->dataBits==16 ? writet16(h,d,f) : \ |
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writet24(h,d,f)) |
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33 |
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extern char *ecalloc(), *emalloc(); |
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extern double atof(), pow(); |
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double gamma = 2.0; /* gamma correction */ |
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39 |
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char *progname; |
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char msg[128]; |
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44 |
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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struct hdStruct head; |
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int reverse = 0; |
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int i; |
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progname = argv[0]; |
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head.dataBits = 16; |
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'g': |
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gamma = atof(argv[++i]); |
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break; |
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case 'r': |
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reverse = !reverse; |
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break; |
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case '2': |
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head.dataBits = 16; |
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break; |
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case '3': |
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head.dataBits = 24; |
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break; |
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default: |
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goto userr; |
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} |
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else |
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break; |
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76 |
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if (i < argc-2) |
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goto userr; |
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/* open input file */ |
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if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
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sprintf(msg, "can't open input \"%s\"", argv[i]); |
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quiterr(msg); |
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} |
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/* open output file */ |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
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sprintf(msg, "can't open output \"%s\"", argv[i+1]); |
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quiterr(msg); |
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} |
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greg |
1.9 |
/* set gamma */ |
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setcolrgam(gamma); |
90 |
greg |
1.1 |
/* convert */ |
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if (reverse) { |
92 |
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/* get header */ |
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if (getthead(&head, NULL, stdin) < 0) |
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quiterr("bad targa file"); |
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if (!goodpic(&head)) |
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quiterr("incompatible format"); |
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/* put header */ |
98 |
greg |
1.7 |
printargs(i, argv, stdout); |
99 |
greg |
1.1 |
putchar('\n'); |
100 |
greg |
1.4 |
fputresolu(YMAJOR|YDECR, head.x, head.y, stdout); |
101 |
greg |
1.1 |
/* convert file */ |
102 |
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tg2ra(&head); |
103 |
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} else { |
104 |
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getheader(stdin, NULL); |
105 |
greg |
1.4 |
if (fgetresolu(&head.x, &head.y, stdin) != (YMAJOR|YDECR)) |
106 |
greg |
1.1 |
quiterr("bad picture file"); |
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/* assign header */ |
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head.textSize = 0; |
109 |
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head.mapType = CM_NOMAP; |
110 |
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head.dataType = IM_RGB; |
111 |
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head.XOffset = 0; |
112 |
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head.YOffset = 0; |
113 |
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head.imType = 0; |
114 |
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/* write header */ |
115 |
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putthead(&head, NULL, stdout); |
116 |
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/* convert file */ |
117 |
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ra2tg(&head); |
118 |
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} |
119 |
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exit(0); |
120 |
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userr: |
121 |
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fprintf(stderr, "Usage: %s [-2|-3|-r][-g gamma] [input [output]]\n", |
122 |
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progname); |
123 |
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exit(1); |
124 |
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} |
125 |
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126 |
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127 |
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int |
128 |
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getint2(fp) /* get a 2-byte positive integer */ |
129 |
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register FILE *fp; |
130 |
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{ |
131 |
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register int b1, b2; |
132 |
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133 |
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if ((b1 = getc(fp)) == EOF || (b2 = getc(fp)) == EOF) |
134 |
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quiterr("read error"); |
135 |
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136 |
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return(b1 | b2<<8); |
137 |
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} |
138 |
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139 |
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140 |
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putint2(i, fp) /* put a 2-byte positive integer */ |
141 |
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register int i; |
142 |
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register FILE *fp; |
143 |
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{ |
144 |
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putc(i&0xff, fp); |
145 |
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putc(i>>8&0xff, fp); |
146 |
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} |
147 |
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148 |
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149 |
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quiterr(err) /* print message and exit */ |
150 |
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char *err; |
151 |
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{ |
152 |
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fprintf(stderr, "%s: %s\n", progname, err); |
153 |
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exit(1); |
154 |
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} |
155 |
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156 |
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157 |
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eputs(s) |
158 |
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char *s; |
159 |
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{ |
160 |
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fputs(s, stderr); |
161 |
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} |
162 |
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163 |
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164 |
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quit(code) |
165 |
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int code; |
166 |
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{ |
167 |
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exit(code); |
168 |
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} |
169 |
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170 |
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171 |
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getthead(hp, ip, fp) /* read header from input */ |
172 |
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struct hdStruct *hp; |
173 |
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char *ip; |
174 |
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register FILE *fp; |
175 |
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{ |
176 |
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int nidbytes; |
177 |
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178 |
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if ((nidbytes = getc(fp)) == EOF) |
179 |
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return(-1); |
180 |
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hp->mapType = getc(fp); |
181 |
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hp->dataType = getc(fp); |
182 |
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hp->mapOrig = getint2(fp); |
183 |
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hp->mapLength = getint2(fp); |
184 |
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hp->CMapBits = getc(fp); |
185 |
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hp->XOffset = getint2(fp); |
186 |
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hp->YOffset = getint2(fp); |
187 |
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hp->x = getint2(fp); |
188 |
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hp->y = getint2(fp); |
189 |
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hp->dataBits = getc(fp); |
190 |
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hp->imType = getc(fp); |
191 |
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192 |
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if (ip != NULL) |
193 |
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if (nidbytes) |
194 |
greg |
1.6 |
fread((char *)ip, nidbytes, 1, fp); |
195 |
greg |
1.1 |
else |
196 |
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*ip = '\0'; |
197 |
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else if (nidbytes) |
198 |
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fseek(fp, (long)nidbytes, 1); |
199 |
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200 |
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return(feof(fp) || ferror(fp) ? -1 : 0); |
201 |
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} |
202 |
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203 |
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204 |
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putthead(hp, ip, fp) /* write header to output */ |
205 |
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struct hdStruct *hp; |
206 |
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char *ip; |
207 |
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register FILE *fp; |
208 |
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{ |
209 |
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if (ip != NULL) |
210 |
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putc(strlen(ip), fp); |
211 |
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else |
212 |
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putc(0, fp); |
213 |
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putc(hp->mapType, fp); |
214 |
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putc(hp->dataType, fp); |
215 |
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putint2(hp->mapOrig, fp); |
216 |
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putint2(hp->mapLength, fp); |
217 |
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putc(hp->CMapBits, fp); |
218 |
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putint2(hp->XOffset, fp); |
219 |
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putint2(hp->YOffset, fp); |
220 |
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putint2(hp->x, fp); |
221 |
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putint2(hp->y, fp); |
222 |
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putc(hp->dataBits, fp); |
223 |
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putc(hp->imType, fp); |
224 |
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225 |
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if (ip != NULL) |
226 |
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fputs(ip, fp); |
227 |
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228 |
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return(ferror(fp) ? -1 : 0); |
229 |
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} |
230 |
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231 |
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232 |
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tg2ra(hp) /* targa file to RADIANCE file */ |
233 |
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struct hdStruct *hp; |
234 |
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{ |
235 |
greg |
1.9 |
COLR *scanline; |
236 |
greg |
1.1 |
unsigned char *tarData; |
237 |
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register int i, j; |
238 |
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/* skip color table */ |
239 |
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if (hp->mapType == CM_HASMAP) |
240 |
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fseek(stdin, (long)hp->mapLength*hp->CMapBits/8, 1); |
241 |
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/* allocate targa data */ |
242 |
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tarData = taralloc(hp); |
243 |
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/* get data */ |
244 |
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readtarga(hp, tarData, stdin); |
245 |
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/* allocate input scanline */ |
246 |
greg |
1.9 |
scanline = (COLR *)emalloc(hp->x*sizeof(COLR)); |
247 |
greg |
1.1 |
/* convert file */ |
248 |
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for (i = hp->y-1; i >= 0; i--) { |
249 |
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if (hp->dataBits == 16) { |
250 |
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register unsigned short *dp; |
251 |
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dp = (unsigned short *)tarData + i*hp->x; |
252 |
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for (j = 0; j < hp->x; j++) { |
253 |
greg |
1.9 |
scanline[j][RED] = *dp>>7 & 0xf8; |
254 |
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scanline[j][GRN] = *dp>>2 & 0xf8; |
255 |
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scanline[j][BLU] = *dp<<3 & 0xf8; |
256 |
greg |
1.1 |
dp++; |
257 |
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} |
258 |
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} else { /* hp->dataBits == 24 */ |
259 |
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register unsigned char *dp; |
260 |
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dp = (unsigned char *)tarData + i*3*hp->x; |
261 |
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for (j = 0; j < hp->x; j++) { |
262 |
greg |
1.9 |
scanline[j][RED] = dp[2]; |
263 |
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scanline[j][GRN] = dp[1]; |
264 |
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scanline[j][BLU] = dp[0]; |
265 |
greg |
1.1 |
dp += 3; |
266 |
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} |
267 |
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} |
268 |
greg |
1.9 |
gambs_colrs(scanline, hp->x); |
269 |
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if (fwritecolrs(scanline, hp->x, stdout) < 0) |
270 |
greg |
1.1 |
quiterr("error writing RADIANCE file"); |
271 |
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} |
272 |
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free((char *)scanline); |
273 |
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free((char *)tarData); |
274 |
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} |
275 |
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276 |
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277 |
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ra2tg(hp) /* convert radiance to targa file */ |
278 |
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struct hdStruct *hp; |
279 |
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{ |
280 |
greg |
1.3 |
register int i, j; |
281 |
greg |
1.1 |
unsigned char *tarData; |
282 |
greg |
1.9 |
COLR *inl; |
283 |
greg |
1.1 |
/* allocate space for data */ |
284 |
greg |
1.9 |
inl = (COLR *)emalloc(hp->x*sizeof(COLR)); |
285 |
greg |
1.1 |
tarData = taralloc(hp); |
286 |
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/* convert file */ |
287 |
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for (j = hp->y-1; j >= 0; j--) { |
288 |
greg |
1.9 |
if (freadcolrs(inl, hp->x, stdin) < 0) |
289 |
greg |
1.1 |
quiterr("error reading RADIANCE file"); |
290 |
greg |
1.9 |
colrs_gambs(inl, hp->x); |
291 |
greg |
1.1 |
if (hp->dataBits == 16) { |
292 |
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register unsigned short *dp; |
293 |
|
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dp = (unsigned short *)tarData + j*hp->x; |
294 |
|
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for (i = 0; i < hp->x; i++) { |
295 |
greg |
1.9 |
*dp = ((inl[i][RED]+(random()&7)) & 0xf8)<<7; |
296 |
|
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*dp |= ((inl[i][GRN]+(random()&7)) & 0xf8)<<2; |
297 |
|
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*dp++ |= (inl[i][BLU]+(random()&7))>>3; |
298 |
greg |
1.1 |
} |
299 |
|
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} else { /* hp->dataBits == 24 */ |
300 |
|
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register unsigned char *dp; |
301 |
|
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dp = (unsigned char *)tarData + j*3*hp->x; |
302 |
|
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for (i = 0; i < hp->x; i++) { |
303 |
greg |
1.10 |
*dp++ = inl[i][BLU]; |
304 |
|
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*dp++ = inl[i][GRN]; |
305 |
greg |
1.9 |
*dp++ = inl[i][RED]; |
306 |
greg |
1.1 |
} |
307 |
|
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} |
308 |
|
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} |
309 |
|
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/* write out targa data */ |
310 |
|
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writetarga(hp, tarData, stdout); |
311 |
|
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|
312 |
greg |
1.8 |
free((char *)inl); |
313 |
greg |
1.1 |
free((char *)tarData); |
314 |
|
|
} |
315 |
|
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|
316 |
|
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|
317 |
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writet24(h, d, fp) /* write out 24-bit targa data */ |
318 |
|
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struct hdStruct *h; |
319 |
|
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unsigned char *d; |
320 |
|
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FILE *fp; |
321 |
|
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{ |
322 |
|
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if (h->dataType == IM_RGB) { /* uncompressed */ |
323 |
greg |
1.6 |
if (fwrite((char *)d, 3*h->x, h->y, fp) != h->y) |
324 |
greg |
1.1 |
quiterr("error writing targa file"); |
325 |
|
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return; |
326 |
|
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} |
327 |
|
|
quiterr("unsupported output type"); |
328 |
|
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} |
329 |
|
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|
330 |
|
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|
331 |
|
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writet16(h, d, fp) /* write out 16-bit targa data */ |
332 |
|
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struct hdStruct *h; |
333 |
|
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register unsigned short *d; |
334 |
|
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FILE *fp; |
335 |
|
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{ |
336 |
|
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register int cnt; |
337 |
|
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|
338 |
|
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if (h->dataType == IM_RGB) { /* uncompressed */ |
339 |
|
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for (cnt = h->x*h->y; cnt-- > 0; ) |
340 |
|
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putint2(*d++, fp); |
341 |
|
|
if (ferror(fp)) |
342 |
|
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quiterr("error writing targa file"); |
343 |
|
|
return; |
344 |
|
|
} |
345 |
|
|
quiterr("unsupported output type"); |
346 |
|
|
} |
347 |
|
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|
348 |
|
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|
349 |
|
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readt24(h, data, fp) /* read in 24-bit targa data */ |
350 |
|
|
register struct hdStruct *h; |
351 |
|
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unsigned char *data; |
352 |
|
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FILE *fp; |
353 |
|
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{ |
354 |
|
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register int cnt, c; |
355 |
|
|
register unsigned char *dp; |
356 |
|
|
int r, g, b; |
357 |
|
|
|
358 |
|
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
359 |
greg |
1.6 |
if (fread((char *)data, 3*h->x, h->y, fp) != h->y) |
360 |
greg |
1.1 |
goto readerr; |
361 |
|
|
return; |
362 |
|
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} |
363 |
|
|
for (dp = data; dp < data+3*h->x*h->y; ) { |
364 |
|
|
if ((c = getc(fp)) == EOF) |
365 |
|
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goto readerr; |
366 |
|
|
cnt = (c & 0x7f) + 1; |
367 |
|
|
if (c & 0x80) { /* repeated pixel */ |
368 |
greg |
1.2 |
b = getc(fp); g = getc(fp); |
369 |
|
|
if ((r = getc(fp)) == EOF) |
370 |
greg |
1.1 |
goto readerr; |
371 |
|
|
while (cnt--) { |
372 |
greg |
1.2 |
*dp++ = b; |
373 |
|
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*dp++ = g; |
374 |
greg |
1.1 |
*dp++ = r; |
375 |
|
|
} |
376 |
|
|
} else /* non-repeating pixels */ |
377 |
|
|
while (cnt--) { |
378 |
|
|
*dp++ = getc(fp); *dp++ = getc(fp); |
379 |
greg |
1.2 |
if ((r = getc(fp)) == EOF) |
380 |
greg |
1.1 |
goto readerr; |
381 |
greg |
1.2 |
*dp++ = r; |
382 |
greg |
1.1 |
} |
383 |
|
|
} |
384 |
|
|
return; |
385 |
|
|
readerr: |
386 |
|
|
quiterr("error reading targa file"); |
387 |
|
|
} |
388 |
|
|
|
389 |
|
|
|
390 |
|
|
readt16(h, data, fp) /* read in 16-bit targa data */ |
391 |
|
|
register struct hdStruct *h; |
392 |
|
|
unsigned short *data; |
393 |
|
|
FILE *fp; |
394 |
|
|
{ |
395 |
|
|
register int cnt, c; |
396 |
|
|
register unsigned short *dp; |
397 |
|
|
|
398 |
|
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
399 |
|
|
dp = data; |
400 |
|
|
for (cnt = h->x*h->y; cnt-- > 0; ) |
401 |
|
|
*dp++ = getint2(fp); |
402 |
|
|
return; |
403 |
|
|
} |
404 |
|
|
for (dp = data; dp < data+h->x*h->y; ) { |
405 |
|
|
if ((c = getc(fp)) == EOF) |
406 |
|
|
goto readerr; |
407 |
|
|
cnt = (c & 0x7f) + 1; |
408 |
|
|
if (c & 0x80) { /* repeated pixel */ |
409 |
|
|
c = getint2(fp); |
410 |
|
|
while (cnt--) |
411 |
|
|
*dp++ = c; |
412 |
|
|
} else /* non-repeating pixels */ |
413 |
|
|
while (cnt--) |
414 |
|
|
*dp++ = getint2(fp); |
415 |
|
|
} |
416 |
|
|
return; |
417 |
|
|
readerr: |
418 |
|
|
quiterr("error reading targa file"); |
419 |
|
|
} |