1 |
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/* Copyright (c) 1986 Regents of the University of California */ |
2 |
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|
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
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|
4 |
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/* |
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. |
8 |
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* 11/2/88 Adapted from ra_t8.c |
9 |
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*/ |
10 |
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|
11 |
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#include <stdio.h> |
12 |
< |
|
11 |
> |
#include <math.h> |
12 |
> |
#include "platform.h" |
13 |
> |
#include "rtio.h" |
14 |
> |
#include "rtmisc.h" |
15 |
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#include "color.h" |
16 |
< |
|
16 |
> |
#include "resolu.h" |
17 |
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#include "random.h" |
19 |
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|
18 |
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#include "targa.h" |
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|
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#define goodpic(h) (((h)->dataType==IM_RGB || (h)->dataType==IM_CRGB) \ |
22 |
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|
23 |
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#define taralloc(h) (unsigned char *)emalloc((h)->x*(h)->y*(h)->dataBits/8) |
24 |
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|
25 |
< |
#define readtarga(h,d,f) ((h)->dataBits==16 ? readt16(h,d,f) : \ |
26 |
< |
readt24(h,d,f)) |
25 |
> |
#define readtarga(h,d,f) ((h)->dataBits==16 ? \ |
26 |
> |
readt16(h,(unsigned short*)d,f) : readt24(h,d,f)) |
27 |
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|
28 |
< |
#define writetarga(h,d,f) ((h)->dataBits==16 ? writet16(h,d,f) : \ |
29 |
< |
writet24(h,d,f)) |
28 |
> |
#define writetarga(h,d,f) ((h)->dataBits==16 ? \ |
29 |
> |
writet16(h,(unsigned short*)d,f) : writet24(h,d,f)) |
30 |
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|
31 |
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extern char *ecalloc(), *emalloc(); |
32 |
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|
35 |
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extern double atof(), pow(); |
36 |
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|
37 |
< |
double gamma = 2.0; /* gamma correction */ |
38 |
< |
|
39 |
< |
char *progname; |
40 |
< |
|
31 |
> |
double gamcor = 2.2; /* gamma correction */ |
32 |
> |
int bradj = 0; /* brightness adjustment */ |
33 |
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char msg[128]; |
34 |
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|
35 |
+ |
static int getint2(FILE *fp); |
36 |
+ |
static void putint2(int i, FILE *fp); |
37 |
+ |
static void quiterr(char *err); |
38 |
+ |
static int getthead(struct hdStruct *hp, char *ip, FILE *fp); |
39 |
+ |
static int putthead(struct hdStruct *hp, char *ip, FILE *fp); |
40 |
+ |
static void tg2ra(struct hdStruct *hp); |
41 |
+ |
static void ra2tg(struct hdStruct *hp); |
42 |
+ |
static void writet24(struct hdStruct *h, unsigned char *d, FILE *fp); |
43 |
+ |
static void writet16(struct hdStruct *h, unsigned short *d, FILE *fp); |
44 |
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static void readt24(struct hdStruct *h, unsigned char *data, FILE *fp); |
45 |
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static void readt16(struct hdStruct *h, unsigned short *data, FILE *fp); |
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|
47 |
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main(argc, argv) |
48 |
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int argc; |
49 |
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char *argv[]; |
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|
48 |
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int |
49 |
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main(int argc, 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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|
55 |
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progname = argv[0]; |
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SET_DEFAULT_BINARY(); |
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SET_FILE_BINARY(stdin); |
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SET_FILE_BINARY(stdout); |
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fixargv0(argv[0]); |
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|
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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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gamcor = atof(argv[++i]); |
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break; |
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case 'r': |
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reverse = !reverse; |
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case '3': |
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head.dataBits = 24; |
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break; |
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case 'e': |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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goto userr; |
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bradj = atoi(argv[++i]); |
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break; |
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default: |
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goto userr; |
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} |
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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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/* set gamma */ |
100 |
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setcolrgam(gamcor); |
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/* convert */ |
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if (reverse) { |
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/* get header */ |
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if (!goodpic(&head)) |
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quiterr("incompatible format"); |
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/* put header */ |
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newheader("RADIANCE", stdout); |
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printargs(i, argv, stdout); |
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fputformat(COLRFMT, stdout); |
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putchar('\n'); |
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fputresolu(YMAJOR|YDECR, head.x, head.y, stdout); |
113 |
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fprtresolu(head.x, head.y, stdout); |
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/* convert file */ |
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tg2ra(&head); |
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} else { |
117 |
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getheader(stdin, NULL); |
118 |
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if (fgetresolu(&head.x, &head.y, stdin) != (YMAJOR|YDECR)) |
117 |
> |
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
118 |
> |
fgetresolu(&head.x, &head.y, stdin) < 0) |
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quiterr("bad picture file"); |
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/* assign header */ |
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head.textSize = 0; |
131 |
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} |
132 |
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exit(0); |
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userr: |
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< |
fprintf(stderr, "Usage: %s [-2|-3|-r][-g gamma] [input [output]]\n", |
134 |
> |
fprintf(stderr, "Usage: %s [-2|-3|-r][-g gamma][-e +/-stops] [input [output]]\n", |
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progname); |
136 |
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exit(1); |
137 |
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} |
138 |
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|
139 |
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|
140 |
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int |
141 |
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getint2(fp) /* get a 2-byte positive integer */ |
142 |
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register FILE *fp; |
140 |
> |
static int |
141 |
> |
getint2( /* get a 2-byte positive integer */ |
142 |
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register FILE *fp |
143 |
> |
) |
144 |
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{ |
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register int b1, b2; |
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|
151 |
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} |
152 |
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|
153 |
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|
154 |
< |
putint2(i, fp) /* put a 2-byte positive integer */ |
155 |
< |
register int i; |
156 |
< |
register FILE *fp; |
154 |
> |
static void |
155 |
> |
putint2( /* put a 2-byte positive integer */ |
156 |
> |
register int i, |
157 |
> |
register FILE *fp |
158 |
> |
) |
159 |
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{ |
160 |
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putc(i&0xff, fp); |
161 |
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putc(i>>8&0xff, fp); |
162 |
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} |
163 |
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164 |
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|
165 |
< |
quiterr(err) /* print message and exit */ |
166 |
< |
char *err; |
165 |
> |
static void |
166 |
> |
quiterr( /* print message and exit */ |
167 |
> |
char *err |
168 |
> |
) |
169 |
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{ |
170 |
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fprintf(stderr, "%s: %s\n", progname, err); |
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exit(1); |
172 |
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} |
173 |
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|
174 |
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|
175 |
< |
eputs(s) |
176 |
< |
char *s; |
175 |
> |
void |
176 |
> |
eputs( |
177 |
> |
char *s |
178 |
> |
) |
179 |
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{ |
180 |
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fputs(s, stderr); |
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} |
182 |
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|
183 |
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|
184 |
< |
quit(code) |
185 |
< |
int code; |
184 |
> |
void |
185 |
> |
quit( |
186 |
> |
int code |
187 |
> |
) |
188 |
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{ |
189 |
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exit(code); |
190 |
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} |
191 |
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|
192 |
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|
193 |
< |
getthead(hp, ip, fp) /* read header from input */ |
194 |
< |
struct hdStruct *hp; |
195 |
< |
char *ip; |
196 |
< |
register FILE *fp; |
193 |
> |
static int |
194 |
> |
getthead( /* read header from input */ |
195 |
> |
struct hdStruct *hp, |
196 |
> |
char *ip, |
197 |
> |
register FILE *fp |
198 |
> |
) |
199 |
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{ |
200 |
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int nidbytes; |
201 |
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|
225 |
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} |
226 |
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|
227 |
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|
228 |
< |
putthead(hp, ip, fp) /* write header to output */ |
229 |
< |
struct hdStruct *hp; |
230 |
< |
char *ip; |
231 |
< |
register FILE *fp; |
228 |
> |
static int |
229 |
> |
putthead( /* write header to output */ |
230 |
> |
struct hdStruct *hp, |
231 |
> |
char *ip, |
232 |
> |
register FILE *fp |
233 |
> |
) |
234 |
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{ |
235 |
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if (ip != NULL) |
236 |
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putc(strlen(ip), fp); |
255 |
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} |
256 |
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|
257 |
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|
258 |
< |
tg2ra(hp) /* targa file to RADIANCE file */ |
259 |
< |
struct hdStruct *hp; |
258 |
> |
static void |
259 |
> |
tg2ra( /* targa file to RADIANCE file */ |
260 |
> |
struct hdStruct *hp |
261 |
> |
) |
262 |
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{ |
263 |
< |
float gmap[256]; |
234 |
< |
COLOR *scanline; |
263 |
> |
COLR *scanline; |
264 |
|
unsigned char *tarData; |
265 |
|
register int i, j; |
237 |
– |
/* set up gamma correction */ |
238 |
– |
for (i = 0; i < 256; i++) |
239 |
– |
gmap[i] = pow((i+.5)/256., gamma); |
266 |
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/* skip color table */ |
267 |
|
if (hp->mapType == CM_HASMAP) |
268 |
|
fseek(stdin, (long)hp->mapLength*hp->CMapBits/8, 1); |
271 |
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/* get data */ |
272 |
|
readtarga(hp, tarData, stdin); |
273 |
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/* allocate input scanline */ |
274 |
< |
scanline = (COLOR *)emalloc(hp->x*sizeof(COLOR)); |
274 |
> |
scanline = (COLR *)emalloc(hp->x*sizeof(COLR)); |
275 |
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/* convert file */ |
276 |
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for (i = hp->y-1; i >= 0; i--) { |
277 |
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if (hp->dataBits == 16) { |
278 |
|
register unsigned short *dp; |
279 |
|
dp = (unsigned short *)tarData + i*hp->x; |
280 |
|
for (j = 0; j < hp->x; j++) { |
281 |
< |
setcolor(scanline[j], gmap[*dp>>7 & 0xf8], |
282 |
< |
gmap[*dp>>2 & 0xf8], |
283 |
< |
gmap[*dp<<3 & 0xf8]); |
281 |
> |
scanline[j][RED] = *dp>>7 & 0xf8; |
282 |
> |
scanline[j][GRN] = *dp>>2 & 0xf8; |
283 |
> |
scanline[j][BLU] = *dp<<3 & 0xf8; |
284 |
|
dp++; |
285 |
|
} |
286 |
|
} else { /* hp->dataBits == 24 */ |
287 |
|
register unsigned char *dp; |
288 |
|
dp = (unsigned char *)tarData + i*3*hp->x; |
289 |
|
for (j = 0; j < hp->x; j++) { |
290 |
< |
setcolor(scanline[j], gmap[dp[2]], |
291 |
< |
gmap[dp[1]], |
292 |
< |
gmap[dp[0]]); |
290 |
> |
scanline[j][RED] = dp[2]; |
291 |
> |
scanline[j][GRN] = dp[1]; |
292 |
> |
scanline[j][BLU] = dp[0]; |
293 |
|
dp += 3; |
294 |
|
} |
295 |
|
} |
296 |
< |
if (fwritescan(scanline, hp->x, stdout) < 0) |
296 |
> |
gambs_colrs(scanline, hp->x); |
297 |
> |
if (bradj) |
298 |
> |
shiftcolrs(scanline, hp->x, bradj); |
299 |
> |
if (fwritecolrs(scanline, hp->x, stdout) < 0) |
300 |
|
quiterr("error writing RADIANCE file"); |
301 |
|
} |
302 |
< |
free((char *)scanline); |
303 |
< |
free((char *)tarData); |
302 |
> |
free((void *)scanline); |
303 |
> |
free((void *)tarData); |
304 |
|
} |
305 |
|
|
306 |
|
|
307 |
< |
ra2tg(hp) /* convert radiance to targa file */ |
308 |
< |
struct hdStruct *hp; |
307 |
> |
static void |
308 |
> |
ra2tg( /* convert radiance to targa file */ |
309 |
> |
struct hdStruct *hp |
310 |
> |
) |
311 |
|
{ |
281 |
– |
#define map(v) (v >= 1.0 ? 1023 : (int)(v*1023.+.5)) |
282 |
– |
unsigned char gmap[1024]; |
312 |
|
register int i, j; |
313 |
|
unsigned char *tarData; |
314 |
< |
COLOR *inl; |
286 |
< |
/* set up gamma correction */ |
287 |
< |
for (i = 0; i < 1024; i++) { |
288 |
< |
j = 256.*pow((i+.5)/1024., 1./gamma); |
289 |
< |
gmap[i] = hp->dataBits == 16 && j > 248 ? 248 : j; |
290 |
< |
} |
314 |
> |
COLR *inl; |
315 |
|
/* allocate space for data */ |
316 |
< |
inl = (COLOR *)emalloc(hp->x*sizeof(COLOR)); |
316 |
> |
inl = (COLR *)emalloc(hp->x*sizeof(COLR)); |
317 |
|
tarData = taralloc(hp); |
318 |
|
/* convert file */ |
319 |
|
for (j = hp->y-1; j >= 0; j--) { |
320 |
< |
if (freadscan(inl, hp->x, stdin) < 0) |
320 |
> |
if (freadcolrs(inl, hp->x, stdin) < 0) |
321 |
|
quiterr("error reading RADIANCE file"); |
322 |
+ |
if (bradj) |
323 |
+ |
shiftcolrs(inl, hp->x, bradj); |
324 |
+ |
colrs_gambs(inl, hp->x); |
325 |
|
if (hp->dataBits == 16) { |
326 |
|
register unsigned short *dp; |
327 |
+ |
register int v; |
328 |
|
dp = (unsigned short *)tarData + j*hp->x; |
329 |
|
for (i = 0; i < hp->x; i++) { |
330 |
< |
*dp = ((gmap[map(colval(inl[i],RED))] |
331 |
< |
+(random()&7)) & 0xf8)<<7; |
332 |
< |
*dp |= ((gmap[map(colval(inl[i],GRN))] |
333 |
< |
+(random()&7)) & 0xf8)<<2; |
334 |
< |
*dp++ |= (gmap[map(colval(inl[i],BLU))] |
335 |
< |
+(random()&7))>>3; |
330 |
> |
v = inl[i][RED] + (random()&7); |
331 |
> |
if (v > 255) v = 255; |
332 |
> |
*dp = (v&0xf8)<<7; |
333 |
> |
v = inl[i][GRN] + (random()&7); |
334 |
> |
if (v > 255) v = 255; |
335 |
> |
*dp |= (v&0xf8)<<2; |
336 |
> |
v = inl[i][BLU] + (random()&7); |
337 |
> |
if (v > 255) v = 255; |
338 |
> |
*dp++ |= v>>3; |
339 |
|
} |
340 |
|
} else { /* hp->dataBits == 24 */ |
341 |
|
register unsigned char *dp; |
342 |
|
dp = (unsigned char *)tarData + j*3*hp->x; |
343 |
|
for (i = 0; i < hp->x; i++) { |
344 |
< |
*dp++ = gmap[map(colval(inl[i],BLU))]; |
345 |
< |
*dp++ = gmap[map(colval(inl[i],GRN))]; |
346 |
< |
*dp++ = gmap[map(colval(inl[i],RED))]; |
344 |
> |
*dp++ = inl[i][BLU]; |
345 |
> |
*dp++ = inl[i][GRN]; |
346 |
> |
*dp++ = inl[i][RED]; |
347 |
|
} |
348 |
|
} |
349 |
|
} |
350 |
|
/* write out targa data */ |
351 |
|
writetarga(hp, tarData, stdout); |
352 |
|
|
353 |
< |
free((char *)inl); |
354 |
< |
free((char *)tarData); |
324 |
< |
#undef map |
353 |
> |
free((void *)inl); |
354 |
> |
free((void *)tarData); |
355 |
|
} |
356 |
|
|
357 |
|
|
358 |
< |
writet24(h, d, fp) /* write out 24-bit targa data */ |
359 |
< |
struct hdStruct *h; |
360 |
< |
unsigned char *d; |
361 |
< |
FILE *fp; |
358 |
> |
static void |
359 |
> |
writet24( /* write out 24-bit targa data */ |
360 |
> |
struct hdStruct *h, |
361 |
> |
unsigned char *d, |
362 |
> |
FILE *fp |
363 |
> |
) |
364 |
|
{ |
365 |
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
366 |
|
if (fwrite((char *)d, 3*h->x, h->y, fp) != h->y) |
371 |
|
} |
372 |
|
|
373 |
|
|
374 |
< |
writet16(h, d, fp) /* write out 16-bit targa data */ |
375 |
< |
struct hdStruct *h; |
376 |
< |
register unsigned short *d; |
377 |
< |
FILE *fp; |
374 |
> |
static void |
375 |
> |
writet16( /* write out 16-bit targa data */ |
376 |
> |
struct hdStruct *h, |
377 |
> |
register unsigned short *d, |
378 |
> |
FILE *fp |
379 |
> |
) |
380 |
|
{ |
381 |
|
register int cnt; |
382 |
|
|
391 |
|
} |
392 |
|
|
393 |
|
|
394 |
< |
readt24(h, data, fp) /* read in 24-bit targa data */ |
395 |
< |
register struct hdStruct *h; |
396 |
< |
unsigned char *data; |
397 |
< |
FILE *fp; |
394 |
> |
static void |
395 |
> |
readt24( /* read in 24-bit targa data */ |
396 |
> |
register struct hdStruct *h, |
397 |
> |
unsigned char *data, |
398 |
> |
FILE *fp |
399 |
> |
) |
400 |
|
{ |
401 |
|
register int cnt, c; |
402 |
|
register unsigned char *dp; |
434 |
|
} |
435 |
|
|
436 |
|
|
437 |
< |
readt16(h, data, fp) /* read in 16-bit targa data */ |
438 |
< |
register struct hdStruct *h; |
439 |
< |
unsigned short *data; |
440 |
< |
FILE *fp; |
437 |
> |
static void |
438 |
> |
readt16( /* read in 16-bit targa data */ |
439 |
> |
register struct hdStruct *h, |
440 |
> |
unsigned short *data, |
441 |
> |
FILE *fp |
442 |
> |
) |
443 |
|
{ |
444 |
|
register int cnt, c; |
445 |
|
register unsigned short *dp; |