1 |
greg |
1.1 |
#ifndef lint |
2 |
schorsch |
2.8 |
static const char RCSid[] = "$Id: ra_t16.c,v 2.7 2003/06/05 19:29:34 schorsch Exp $"; |
3 |
greg |
1.1 |
#endif |
4 |
|
|
/* |
5 |
|
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* ra_t16.c - program to convert between RADIANCE and |
6 |
|
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* Targa 16, 24 and 32-bit images. |
7 |
|
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* |
8 |
|
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* 11/2/88 Adapted from ra_t8.c |
9 |
|
|
*/ |
10 |
|
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|
11 |
|
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#include <stdio.h> |
12 |
schorsch |
2.8 |
#include <string.h> |
13 |
greg |
2.6 |
#include <time.h> |
14 |
greg |
2.3 |
#include <math.h> |
15 |
|
|
|
16 |
schorsch |
2.7 |
#include "platform.h" |
17 |
schorsch |
2.8 |
#include "rtmisc.h" |
18 |
greg |
1.1 |
#include "color.h" |
19 |
greg |
1.15 |
#include "resolu.h" |
20 |
greg |
1.5 |
#include "random.h" |
21 |
greg |
1.1 |
#include "targa.h" |
22 |
|
|
|
23 |
|
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#define goodpic(h) (((h)->dataType==IM_RGB || (h)->dataType==IM_CRGB) \ |
24 |
|
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&& ((h)->dataBits==16 || (h)->dataBits==24)) |
25 |
|
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|
26 |
|
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#define taralloc(h) (unsigned char *)emalloc((h)->x*(h)->y*(h)->dataBits/8) |
27 |
|
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|
28 |
schorsch |
2.8 |
#define readtarga(h,d,f) ((h)->dataBits==16 ? \ |
29 |
|
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readt16(h,(unsigned short*)d,f) : readt24(h,d,f)) |
30 |
greg |
1.1 |
|
31 |
schorsch |
2.8 |
#define writetarga(h,d,f) ((h)->dataBits==16 ? \ |
32 |
|
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writet16(h,(unsigned short*)d,f) : writet24(h,d,f)) |
33 |
greg |
1.1 |
|
34 |
greg |
2.4 |
double gamcor = 2.2; /* gamma correction */ |
35 |
greg |
1.13 |
int bradj = 0; /* brightness adjustment */ |
36 |
greg |
1.1 |
char *progname; |
37 |
schorsch |
2.8 |
char msg[128]; |
38 |
greg |
1.1 |
|
39 |
schorsch |
2.8 |
static int getint2(FILE *fp); |
40 |
|
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static void putint2(int i, FILE *fp); |
41 |
|
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static void quiterr(char *err); |
42 |
|
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static int getthead(struct hdStruct *hp, char *ip, FILE *fp); |
43 |
|
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static int putthead(struct hdStruct *hp, char *ip, FILE *fp); |
44 |
|
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static void tg2ra(struct hdStruct *hp); |
45 |
|
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static void ra2tg(struct hdStruct *hp); |
46 |
|
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static void writet24(struct hdStruct *h, unsigned char *d, FILE *fp); |
47 |
|
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static void writet16(struct hdStruct *h, unsigned short *d, FILE *fp); |
48 |
|
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static void readt24(struct hdStruct *h, unsigned char *data, FILE *fp); |
49 |
|
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static void readt16(struct hdStruct *h, unsigned short *data, FILE *fp); |
50 |
greg |
1.1 |
|
51 |
|
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|
52 |
schorsch |
2.8 |
int |
53 |
|
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main(int argc, char *argv[]) |
54 |
greg |
1.1 |
{ |
55 |
|
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struct hdStruct head; |
56 |
|
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int reverse = 0; |
57 |
|
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int i; |
58 |
schorsch |
2.7 |
SET_DEFAULT_BINARY(); |
59 |
|
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SET_FILE_BINARY(stdin); |
60 |
|
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SET_FILE_BINARY(stdout); |
61 |
greg |
1.1 |
progname = argv[0]; |
62 |
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|
63 |
|
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head.dataBits = 16; |
64 |
|
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for (i = 1; i < argc; i++) |
65 |
|
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if (argv[i][0] == '-') |
66 |
|
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switch (argv[i][1]) { |
67 |
|
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case 'g': |
68 |
greg |
2.4 |
gamcor = atof(argv[++i]); |
69 |
greg |
1.1 |
break; |
70 |
|
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case 'r': |
71 |
|
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reverse = !reverse; |
72 |
|
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break; |
73 |
|
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case '2': |
74 |
|
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head.dataBits = 16; |
75 |
|
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break; |
76 |
|
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case '3': |
77 |
|
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head.dataBits = 24; |
78 |
|
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break; |
79 |
greg |
1.13 |
case 'e': |
80 |
|
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
81 |
|
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goto userr; |
82 |
|
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bradj = atoi(argv[++i]); |
83 |
|
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break; |
84 |
greg |
1.1 |
default: |
85 |
|
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goto userr; |
86 |
|
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} |
87 |
|
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else |
88 |
|
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break; |
89 |
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|
90 |
|
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if (i < argc-2) |
91 |
|
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goto userr; |
92 |
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/* open input file */ |
93 |
|
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if (i <= argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
94 |
|
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sprintf(msg, "can't open input \"%s\"", argv[i]); |
95 |
|
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quiterr(msg); |
96 |
|
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} |
97 |
|
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/* open output file */ |
98 |
|
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
99 |
|
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sprintf(msg, "can't open output \"%s\"", argv[i+1]); |
100 |
|
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quiterr(msg); |
101 |
|
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} |
102 |
greg |
1.9 |
/* set gamma */ |
103 |
greg |
2.4 |
setcolrgam(gamcor); |
104 |
greg |
1.1 |
/* convert */ |
105 |
|
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if (reverse) { |
106 |
|
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/* get header */ |
107 |
|
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if (getthead(&head, NULL, stdin) < 0) |
108 |
|
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quiterr("bad targa file"); |
109 |
|
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if (!goodpic(&head)) |
110 |
|
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quiterr("incompatible format"); |
111 |
|
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/* put header */ |
112 |
greg |
2.5 |
newheader("RADIANCE", stdout); |
113 |
greg |
1.7 |
printargs(i, argv, stdout); |
114 |
greg |
1.11 |
fputformat(COLRFMT, stdout); |
115 |
greg |
1.1 |
putchar('\n'); |
116 |
greg |
1.15 |
fprtresolu(head.x, head.y, stdout); |
117 |
greg |
1.1 |
/* convert file */ |
118 |
|
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tg2ra(&head); |
119 |
|
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} else { |
120 |
greg |
1.11 |
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
121 |
greg |
1.15 |
fgetresolu(&head.x, &head.y, stdin) < 0) |
122 |
greg |
1.1 |
quiterr("bad picture file"); |
123 |
|
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/* assign header */ |
124 |
|
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head.textSize = 0; |
125 |
|
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head.mapType = CM_NOMAP; |
126 |
|
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head.dataType = IM_RGB; |
127 |
|
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head.XOffset = 0; |
128 |
|
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head.YOffset = 0; |
129 |
|
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head.imType = 0; |
130 |
|
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/* write header */ |
131 |
|
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putthead(&head, NULL, stdout); |
132 |
|
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/* convert file */ |
133 |
|
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ra2tg(&head); |
134 |
|
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} |
135 |
|
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exit(0); |
136 |
|
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userr: |
137 |
greg |
1.13 |
fprintf(stderr, "Usage: %s [-2|-3|-r][-g gamma][-e +/-stops] [input [output]]\n", |
138 |
greg |
1.1 |
progname); |
139 |
|
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exit(1); |
140 |
|
|
} |
141 |
|
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|
142 |
|
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|
143 |
schorsch |
2.8 |
static int |
144 |
|
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getint2( /* get a 2-byte positive integer */ |
145 |
|
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register FILE *fp |
146 |
|
|
) |
147 |
greg |
1.1 |
{ |
148 |
|
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register int b1, b2; |
149 |
|
|
|
150 |
|
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if ((b1 = getc(fp)) == EOF || (b2 = getc(fp)) == EOF) |
151 |
|
|
quiterr("read error"); |
152 |
|
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|
153 |
|
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return(b1 | b2<<8); |
154 |
|
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} |
155 |
|
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|
156 |
|
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|
157 |
schorsch |
2.8 |
static void |
158 |
|
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putint2( /* put a 2-byte positive integer */ |
159 |
|
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register int i, |
160 |
|
|
register FILE *fp |
161 |
|
|
) |
162 |
greg |
1.1 |
{ |
163 |
|
|
putc(i&0xff, fp); |
164 |
|
|
putc(i>>8&0xff, fp); |
165 |
|
|
} |
166 |
|
|
|
167 |
|
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|
168 |
schorsch |
2.8 |
static void |
169 |
|
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quiterr( /* print message and exit */ |
170 |
|
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char *err |
171 |
|
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) |
172 |
greg |
1.1 |
{ |
173 |
|
|
fprintf(stderr, "%s: %s\n", progname, err); |
174 |
|
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exit(1); |
175 |
|
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} |
176 |
|
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|
177 |
|
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|
178 |
greg |
2.6 |
void |
179 |
schorsch |
2.8 |
eputs( |
180 |
|
|
char *s |
181 |
|
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) |
182 |
greg |
1.1 |
{ |
183 |
|
|
fputs(s, stderr); |
184 |
|
|
} |
185 |
|
|
|
186 |
|
|
|
187 |
greg |
2.6 |
void |
188 |
schorsch |
2.8 |
quit( |
189 |
|
|
int code |
190 |
|
|
) |
191 |
greg |
1.1 |
{ |
192 |
|
|
exit(code); |
193 |
|
|
} |
194 |
|
|
|
195 |
|
|
|
196 |
schorsch |
2.8 |
static int |
197 |
|
|
getthead( /* read header from input */ |
198 |
|
|
struct hdStruct *hp, |
199 |
|
|
char *ip, |
200 |
|
|
register FILE *fp |
201 |
|
|
) |
202 |
greg |
1.1 |
{ |
203 |
|
|
int nidbytes; |
204 |
|
|
|
205 |
|
|
if ((nidbytes = getc(fp)) == EOF) |
206 |
|
|
return(-1); |
207 |
|
|
hp->mapType = getc(fp); |
208 |
|
|
hp->dataType = getc(fp); |
209 |
|
|
hp->mapOrig = getint2(fp); |
210 |
|
|
hp->mapLength = getint2(fp); |
211 |
|
|
hp->CMapBits = getc(fp); |
212 |
|
|
hp->XOffset = getint2(fp); |
213 |
|
|
hp->YOffset = getint2(fp); |
214 |
|
|
hp->x = getint2(fp); |
215 |
|
|
hp->y = getint2(fp); |
216 |
|
|
hp->dataBits = getc(fp); |
217 |
|
|
hp->imType = getc(fp); |
218 |
|
|
|
219 |
|
|
if (ip != NULL) |
220 |
|
|
if (nidbytes) |
221 |
greg |
1.6 |
fread((char *)ip, nidbytes, 1, fp); |
222 |
greg |
1.1 |
else |
223 |
|
|
*ip = '\0'; |
224 |
|
|
else if (nidbytes) |
225 |
|
|
fseek(fp, (long)nidbytes, 1); |
226 |
|
|
|
227 |
|
|
return(feof(fp) || ferror(fp) ? -1 : 0); |
228 |
|
|
} |
229 |
|
|
|
230 |
|
|
|
231 |
schorsch |
2.8 |
static int |
232 |
|
|
putthead( /* write header to output */ |
233 |
|
|
struct hdStruct *hp, |
234 |
|
|
char *ip, |
235 |
|
|
register FILE *fp |
236 |
|
|
) |
237 |
greg |
1.1 |
{ |
238 |
|
|
if (ip != NULL) |
239 |
|
|
putc(strlen(ip), fp); |
240 |
|
|
else |
241 |
|
|
putc(0, fp); |
242 |
|
|
putc(hp->mapType, fp); |
243 |
|
|
putc(hp->dataType, fp); |
244 |
|
|
putint2(hp->mapOrig, fp); |
245 |
|
|
putint2(hp->mapLength, fp); |
246 |
|
|
putc(hp->CMapBits, fp); |
247 |
|
|
putint2(hp->XOffset, fp); |
248 |
|
|
putint2(hp->YOffset, fp); |
249 |
|
|
putint2(hp->x, fp); |
250 |
|
|
putint2(hp->y, fp); |
251 |
|
|
putc(hp->dataBits, fp); |
252 |
|
|
putc(hp->imType, fp); |
253 |
|
|
|
254 |
|
|
if (ip != NULL) |
255 |
|
|
fputs(ip, fp); |
256 |
|
|
|
257 |
|
|
return(ferror(fp) ? -1 : 0); |
258 |
|
|
} |
259 |
|
|
|
260 |
|
|
|
261 |
schorsch |
2.8 |
static void |
262 |
|
|
tg2ra( /* targa file to RADIANCE file */ |
263 |
|
|
struct hdStruct *hp |
264 |
|
|
) |
265 |
greg |
1.1 |
{ |
266 |
greg |
1.9 |
COLR *scanline; |
267 |
greg |
1.1 |
unsigned char *tarData; |
268 |
|
|
register int i, j; |
269 |
|
|
/* skip color table */ |
270 |
|
|
if (hp->mapType == CM_HASMAP) |
271 |
|
|
fseek(stdin, (long)hp->mapLength*hp->CMapBits/8, 1); |
272 |
|
|
/* allocate targa data */ |
273 |
|
|
tarData = taralloc(hp); |
274 |
|
|
/* get data */ |
275 |
|
|
readtarga(hp, tarData, stdin); |
276 |
|
|
/* allocate input scanline */ |
277 |
greg |
1.9 |
scanline = (COLR *)emalloc(hp->x*sizeof(COLR)); |
278 |
greg |
1.1 |
/* convert file */ |
279 |
|
|
for (i = hp->y-1; i >= 0; i--) { |
280 |
|
|
if (hp->dataBits == 16) { |
281 |
|
|
register unsigned short *dp; |
282 |
|
|
dp = (unsigned short *)tarData + i*hp->x; |
283 |
|
|
for (j = 0; j < hp->x; j++) { |
284 |
greg |
1.9 |
scanline[j][RED] = *dp>>7 & 0xf8; |
285 |
|
|
scanline[j][GRN] = *dp>>2 & 0xf8; |
286 |
|
|
scanline[j][BLU] = *dp<<3 & 0xf8; |
287 |
greg |
1.1 |
dp++; |
288 |
|
|
} |
289 |
|
|
} else { /* hp->dataBits == 24 */ |
290 |
|
|
register unsigned char *dp; |
291 |
|
|
dp = (unsigned char *)tarData + i*3*hp->x; |
292 |
|
|
for (j = 0; j < hp->x; j++) { |
293 |
greg |
1.9 |
scanline[j][RED] = dp[2]; |
294 |
|
|
scanline[j][GRN] = dp[1]; |
295 |
|
|
scanline[j][BLU] = dp[0]; |
296 |
greg |
1.1 |
dp += 3; |
297 |
|
|
} |
298 |
|
|
} |
299 |
greg |
1.9 |
gambs_colrs(scanline, hp->x); |
300 |
greg |
1.13 |
if (bradj) |
301 |
|
|
shiftcolrs(scanline, hp->x, bradj); |
302 |
greg |
1.9 |
if (fwritecolrs(scanline, hp->x, stdout) < 0) |
303 |
greg |
1.1 |
quiterr("error writing RADIANCE file"); |
304 |
|
|
} |
305 |
greg |
2.6 |
free((void *)scanline); |
306 |
|
|
free((void *)tarData); |
307 |
greg |
1.1 |
} |
308 |
|
|
|
309 |
|
|
|
310 |
schorsch |
2.8 |
static void |
311 |
|
|
ra2tg( /* convert radiance to targa file */ |
312 |
|
|
struct hdStruct *hp |
313 |
|
|
) |
314 |
greg |
1.1 |
{ |
315 |
greg |
1.3 |
register int i, j; |
316 |
greg |
1.1 |
unsigned char *tarData; |
317 |
greg |
1.9 |
COLR *inl; |
318 |
greg |
1.1 |
/* allocate space for data */ |
319 |
greg |
1.9 |
inl = (COLR *)emalloc(hp->x*sizeof(COLR)); |
320 |
greg |
1.1 |
tarData = taralloc(hp); |
321 |
|
|
/* convert file */ |
322 |
|
|
for (j = hp->y-1; j >= 0; j--) { |
323 |
greg |
1.9 |
if (freadcolrs(inl, hp->x, stdin) < 0) |
324 |
greg |
1.1 |
quiterr("error reading RADIANCE file"); |
325 |
greg |
1.13 |
if (bradj) |
326 |
|
|
shiftcolrs(inl, hp->x, bradj); |
327 |
greg |
1.9 |
colrs_gambs(inl, hp->x); |
328 |
greg |
1.1 |
if (hp->dataBits == 16) { |
329 |
|
|
register unsigned short *dp; |
330 |
greg |
1.12 |
register int v; |
331 |
greg |
1.1 |
dp = (unsigned short *)tarData + j*hp->x; |
332 |
|
|
for (i = 0; i < hp->x; i++) { |
333 |
greg |
1.12 |
v = inl[i][RED] + (random()&7); |
334 |
|
|
if (v > 255) v = 255; |
335 |
|
|
*dp = (v&0xf8)<<7; |
336 |
|
|
v = inl[i][GRN] + (random()&7); |
337 |
|
|
if (v > 255) v = 255; |
338 |
|
|
*dp |= (v&0xf8)<<2; |
339 |
|
|
v = inl[i][BLU] + (random()&7); |
340 |
|
|
if (v > 255) v = 255; |
341 |
|
|
*dp++ |= v>>3; |
342 |
greg |
1.1 |
} |
343 |
|
|
} else { /* hp->dataBits == 24 */ |
344 |
|
|
register unsigned char *dp; |
345 |
|
|
dp = (unsigned char *)tarData + j*3*hp->x; |
346 |
|
|
for (i = 0; i < hp->x; i++) { |
347 |
greg |
1.10 |
*dp++ = inl[i][BLU]; |
348 |
|
|
*dp++ = inl[i][GRN]; |
349 |
greg |
1.9 |
*dp++ = inl[i][RED]; |
350 |
greg |
1.1 |
} |
351 |
|
|
} |
352 |
|
|
} |
353 |
|
|
/* write out targa data */ |
354 |
|
|
writetarga(hp, tarData, stdout); |
355 |
|
|
|
356 |
greg |
2.6 |
free((void *)inl); |
357 |
|
|
free((void *)tarData); |
358 |
greg |
1.1 |
} |
359 |
|
|
|
360 |
|
|
|
361 |
schorsch |
2.8 |
static void |
362 |
|
|
writet24( /* write out 24-bit targa data */ |
363 |
|
|
struct hdStruct *h, |
364 |
|
|
unsigned char *d, |
365 |
|
|
FILE *fp |
366 |
|
|
) |
367 |
greg |
1.1 |
{ |
368 |
|
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
369 |
greg |
1.6 |
if (fwrite((char *)d, 3*h->x, h->y, fp) != h->y) |
370 |
greg |
1.1 |
quiterr("error writing targa file"); |
371 |
|
|
return; |
372 |
|
|
} |
373 |
|
|
quiterr("unsupported output type"); |
374 |
|
|
} |
375 |
|
|
|
376 |
|
|
|
377 |
schorsch |
2.8 |
static void |
378 |
|
|
writet16( /* write out 16-bit targa data */ |
379 |
|
|
struct hdStruct *h, |
380 |
|
|
register unsigned short *d, |
381 |
|
|
FILE *fp |
382 |
|
|
) |
383 |
greg |
1.1 |
{ |
384 |
|
|
register int cnt; |
385 |
|
|
|
386 |
|
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
387 |
|
|
for (cnt = h->x*h->y; cnt-- > 0; ) |
388 |
|
|
putint2(*d++, fp); |
389 |
|
|
if (ferror(fp)) |
390 |
|
|
quiterr("error writing targa file"); |
391 |
|
|
return; |
392 |
|
|
} |
393 |
|
|
quiterr("unsupported output type"); |
394 |
|
|
} |
395 |
|
|
|
396 |
|
|
|
397 |
schorsch |
2.8 |
static void |
398 |
|
|
readt24( /* read in 24-bit targa data */ |
399 |
|
|
register struct hdStruct *h, |
400 |
|
|
unsigned char *data, |
401 |
|
|
FILE *fp |
402 |
|
|
) |
403 |
greg |
1.1 |
{ |
404 |
|
|
register int cnt, c; |
405 |
|
|
register unsigned char *dp; |
406 |
|
|
int r, g, b; |
407 |
|
|
|
408 |
|
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
409 |
greg |
1.6 |
if (fread((char *)data, 3*h->x, h->y, fp) != h->y) |
410 |
greg |
1.1 |
goto readerr; |
411 |
|
|
return; |
412 |
|
|
} |
413 |
|
|
for (dp = data; dp < data+3*h->x*h->y; ) { |
414 |
|
|
if ((c = getc(fp)) == EOF) |
415 |
|
|
goto readerr; |
416 |
|
|
cnt = (c & 0x7f) + 1; |
417 |
|
|
if (c & 0x80) { /* repeated pixel */ |
418 |
greg |
1.2 |
b = getc(fp); g = getc(fp); |
419 |
|
|
if ((r = getc(fp)) == EOF) |
420 |
greg |
1.1 |
goto readerr; |
421 |
|
|
while (cnt--) { |
422 |
greg |
1.2 |
*dp++ = b; |
423 |
|
|
*dp++ = g; |
424 |
greg |
1.1 |
*dp++ = r; |
425 |
|
|
} |
426 |
|
|
} else /* non-repeating pixels */ |
427 |
|
|
while (cnt--) { |
428 |
|
|
*dp++ = getc(fp); *dp++ = getc(fp); |
429 |
greg |
1.2 |
if ((r = getc(fp)) == EOF) |
430 |
greg |
1.1 |
goto readerr; |
431 |
greg |
1.2 |
*dp++ = r; |
432 |
greg |
1.1 |
} |
433 |
|
|
} |
434 |
|
|
return; |
435 |
|
|
readerr: |
436 |
|
|
quiterr("error reading targa file"); |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
|
440 |
schorsch |
2.8 |
static void |
441 |
|
|
readt16( /* read in 16-bit targa data */ |
442 |
|
|
register struct hdStruct *h, |
443 |
|
|
unsigned short *data, |
444 |
|
|
FILE *fp |
445 |
|
|
) |
446 |
greg |
1.1 |
{ |
447 |
|
|
register int cnt, c; |
448 |
|
|
register unsigned short *dp; |
449 |
|
|
|
450 |
|
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
451 |
|
|
dp = data; |
452 |
|
|
for (cnt = h->x*h->y; cnt-- > 0; ) |
453 |
|
|
*dp++ = getint2(fp); |
454 |
|
|
return; |
455 |
|
|
} |
456 |
|
|
for (dp = data; dp < data+h->x*h->y; ) { |
457 |
|
|
if ((c = getc(fp)) == EOF) |
458 |
|
|
goto readerr; |
459 |
|
|
cnt = (c & 0x7f) + 1; |
460 |
|
|
if (c & 0x80) { /* repeated pixel */ |
461 |
|
|
c = getint2(fp); |
462 |
|
|
while (cnt--) |
463 |
|
|
*dp++ = c; |
464 |
|
|
} else /* non-repeating pixels */ |
465 |
|
|
while (cnt--) |
466 |
|
|
*dp++ = getint2(fp); |
467 |
|
|
} |
468 |
|
|
return; |
469 |
|
|
readerr: |
470 |
|
|
quiterr("error reading targa file"); |
471 |
|
|
} |