| 1 |
– |
/* Copyright (c) 1986 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* ra_t16.c - program to convert between RADIANCE and |
| 6 |
|
* Targa 16, 24 and 32-bit images. |
| 9 |
|
*/ |
| 10 |
|
|
| 11 |
|
#include <stdio.h> |
| 12 |
+ |
#include <time.h> |
| 13 |
+ |
#include <math.h> |
| 14 |
|
|
| 15 |
+ |
#include "platform.h" |
| 16 |
|
#include "color.h" |
| 17 |
< |
|
| 17 |
> |
#include "resolu.h" |
| 18 |
|
#include "random.h" |
| 19 |
– |
|
| 19 |
|
#include "targa.h" |
| 20 |
|
|
| 21 |
|
#define goodpic(h) (((h)->dataType==IM_RGB || (h)->dataType==IM_CRGB) \ |
| 31 |
|
|
| 32 |
|
extern char *ecalloc(), *emalloc(); |
| 33 |
|
|
| 34 |
< |
extern double atof(), pow(); |
| 34 |
> |
double gamcor = 2.2; /* gamma correction */ |
| 35 |
|
|
| 36 |
< |
double gamma = 2.0; /* gamma correction */ |
| 36 |
> |
int bradj = 0; /* brightness adjustment */ |
| 37 |
|
|
| 38 |
|
char *progname; |
| 39 |
|
|
| 47 |
|
struct hdStruct head; |
| 48 |
|
int reverse = 0; |
| 49 |
|
int i; |
| 50 |
< |
|
| 50 |
> |
SET_DEFAULT_BINARY(); |
| 51 |
> |
SET_FILE_BINARY(stdin); |
| 52 |
> |
SET_FILE_BINARY(stdout); |
| 53 |
|
progname = argv[0]; |
| 54 |
|
|
| 55 |
|
head.dataBits = 16; |
| 57 |
|
if (argv[i][0] == '-') |
| 58 |
|
switch (argv[i][1]) { |
| 59 |
|
case 'g': |
| 60 |
< |
gamma = atof(argv[++i]); |
| 60 |
> |
gamcor = atof(argv[++i]); |
| 61 |
|
break; |
| 62 |
|
case 'r': |
| 63 |
|
reverse = !reverse; |
| 68 |
|
case '3': |
| 69 |
|
head.dataBits = 24; |
| 70 |
|
break; |
| 71 |
+ |
case 'e': |
| 72 |
+ |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
| 73 |
+ |
goto userr; |
| 74 |
+ |
bradj = atoi(argv[++i]); |
| 75 |
+ |
break; |
| 76 |
|
default: |
| 77 |
|
goto userr; |
| 78 |
|
} |
| 91 |
|
sprintf(msg, "can't open output \"%s\"", argv[i+1]); |
| 92 |
|
quiterr(msg); |
| 93 |
|
} |
| 94 |
+ |
/* set gamma */ |
| 95 |
+ |
setcolrgam(gamcor); |
| 96 |
|
/* convert */ |
| 97 |
|
if (reverse) { |
| 98 |
|
/* get header */ |
| 101 |
|
if (!goodpic(&head)) |
| 102 |
|
quiterr("incompatible format"); |
| 103 |
|
/* put header */ |
| 104 |
< |
printargs(argc, argv, stdout); |
| 104 |
> |
newheader("RADIANCE", stdout); |
| 105 |
> |
printargs(i, argv, stdout); |
| 106 |
> |
fputformat(COLRFMT, stdout); |
| 107 |
|
putchar('\n'); |
| 108 |
< |
fputresolu(YMAJOR|YDECR, head.x, head.y, stdout); |
| 108 |
> |
fprtresolu(head.x, head.y, stdout); |
| 109 |
|
/* convert file */ |
| 110 |
|
tg2ra(&head); |
| 111 |
|
} else { |
| 112 |
< |
getheader(stdin, NULL); |
| 113 |
< |
if (fgetresolu(&head.x, &head.y, stdin) != (YMAJOR|YDECR)) |
| 112 |
> |
if (checkheader(stdin, COLRFMT, NULL) < 0 || |
| 113 |
> |
fgetresolu(&head.x, &head.y, stdin) < 0) |
| 114 |
|
quiterr("bad picture file"); |
| 115 |
|
/* assign header */ |
| 116 |
|
head.textSize = 0; |
| 126 |
|
} |
| 127 |
|
exit(0); |
| 128 |
|
userr: |
| 129 |
< |
fprintf(stderr, "Usage: %s [-2|-3|-r][-g gamma] [input [output]]\n", |
| 129 |
> |
fprintf(stderr, "Usage: %s [-2|-3|-r][-g gamma][-e +/-stops] [input [output]]\n", |
| 130 |
|
progname); |
| 131 |
|
exit(1); |
| 132 |
|
} |
| 162 |
|
} |
| 163 |
|
|
| 164 |
|
|
| 165 |
+ |
void |
| 166 |
|
eputs(s) |
| 167 |
|
char *s; |
| 168 |
|
{ |
| 170 |
|
} |
| 171 |
|
|
| 172 |
|
|
| 173 |
+ |
void |
| 174 |
|
quit(code) |
| 175 |
|
int code; |
| 176 |
|
{ |
| 201 |
|
|
| 202 |
|
if (ip != NULL) |
| 203 |
|
if (nidbytes) |
| 204 |
< |
fread(ip, nidbytes, 1, fp); |
| 204 |
> |
fread((char *)ip, nidbytes, 1, fp); |
| 205 |
|
else |
| 206 |
|
*ip = '\0'; |
| 207 |
|
else if (nidbytes) |
| 242 |
|
tg2ra(hp) /* targa file to RADIANCE file */ |
| 243 |
|
struct hdStruct *hp; |
| 244 |
|
{ |
| 245 |
< |
float gmap[256]; |
| 234 |
< |
COLOR *scanline; |
| 245 |
> |
COLR *scanline; |
| 246 |
|
unsigned char *tarData; |
| 247 |
|
register int i, j; |
| 237 |
– |
/* set up gamma correction */ |
| 238 |
– |
for (i = 0; i < 256; i++) |
| 239 |
– |
gmap[i] = pow((i+.5)/256., gamma); |
| 248 |
|
/* skip color table */ |
| 249 |
|
if (hp->mapType == CM_HASMAP) |
| 250 |
|
fseek(stdin, (long)hp->mapLength*hp->CMapBits/8, 1); |
| 253 |
|
/* get data */ |
| 254 |
|
readtarga(hp, tarData, stdin); |
| 255 |
|
/* allocate input scanline */ |
| 256 |
< |
scanline = (COLOR *)emalloc(hp->x*sizeof(COLOR)); |
| 256 |
> |
scanline = (COLR *)emalloc(hp->x*sizeof(COLR)); |
| 257 |
|
/* convert file */ |
| 258 |
|
for (i = hp->y-1; i >= 0; i--) { |
| 259 |
|
if (hp->dataBits == 16) { |
| 260 |
|
register unsigned short *dp; |
| 261 |
|
dp = (unsigned short *)tarData + i*hp->x; |
| 262 |
|
for (j = 0; j < hp->x; j++) { |
| 263 |
< |
setcolor(scanline[j], gmap[*dp>>7 & 0xf8], |
| 264 |
< |
gmap[*dp>>2 & 0xf8], |
| 265 |
< |
gmap[*dp<<3 & 0xf8]); |
| 263 |
> |
scanline[j][RED] = *dp>>7 & 0xf8; |
| 264 |
> |
scanline[j][GRN] = *dp>>2 & 0xf8; |
| 265 |
> |
scanline[j][BLU] = *dp<<3 & 0xf8; |
| 266 |
|
dp++; |
| 267 |
|
} |
| 268 |
|
} else { /* hp->dataBits == 24 */ |
| 269 |
|
register unsigned char *dp; |
| 270 |
|
dp = (unsigned char *)tarData + i*3*hp->x; |
| 271 |
|
for (j = 0; j < hp->x; j++) { |
| 272 |
< |
setcolor(scanline[j], gmap[dp[2]], |
| 273 |
< |
gmap[dp[1]], |
| 274 |
< |
gmap[dp[0]]); |
| 272 |
> |
scanline[j][RED] = dp[2]; |
| 273 |
> |
scanline[j][GRN] = dp[1]; |
| 274 |
> |
scanline[j][BLU] = dp[0]; |
| 275 |
|
dp += 3; |
| 276 |
|
} |
| 277 |
|
} |
| 278 |
< |
if (fwritescan(scanline, hp->x, stdout) < 0) |
| 278 |
> |
gambs_colrs(scanline, hp->x); |
| 279 |
> |
if (bradj) |
| 280 |
> |
shiftcolrs(scanline, hp->x, bradj); |
| 281 |
> |
if (fwritecolrs(scanline, hp->x, stdout) < 0) |
| 282 |
|
quiterr("error writing RADIANCE file"); |
| 283 |
|
} |
| 284 |
< |
free((char *)scanline); |
| 285 |
< |
free((char *)tarData); |
| 284 |
> |
free((void *)scanline); |
| 285 |
> |
free((void *)tarData); |
| 286 |
|
} |
| 287 |
|
|
| 288 |
|
|
| 289 |
|
ra2tg(hp) /* convert radiance to targa file */ |
| 290 |
|
struct hdStruct *hp; |
| 291 |
|
{ |
| 281 |
– |
#define map(v) (v >= 1.0 ? 1023 : (int)(v*1023.+.5)) |
| 282 |
– |
unsigned char gmap[1024]; |
| 292 |
|
register int i, j; |
| 293 |
|
unsigned char *tarData; |
| 294 |
< |
COLOR *inline; |
| 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 |
< |
} |
| 294 |
> |
COLR *inl; |
| 295 |
|
/* allocate space for data */ |
| 296 |
< |
inline = (COLOR *)emalloc(hp->x*sizeof(COLOR)); |
| 296 |
> |
inl = (COLR *)emalloc(hp->x*sizeof(COLR)); |
| 297 |
|
tarData = taralloc(hp); |
| 298 |
|
/* convert file */ |
| 299 |
|
for (j = hp->y-1; j >= 0; j--) { |
| 300 |
< |
if (freadscan(inline, hp->x, stdin) < 0) |
| 300 |
> |
if (freadcolrs(inl, hp->x, stdin) < 0) |
| 301 |
|
quiterr("error reading RADIANCE file"); |
| 302 |
+ |
if (bradj) |
| 303 |
+ |
shiftcolrs(inl, hp->x, bradj); |
| 304 |
+ |
colrs_gambs(inl, hp->x); |
| 305 |
|
if (hp->dataBits == 16) { |
| 306 |
|
register unsigned short *dp; |
| 307 |
+ |
register int v; |
| 308 |
|
dp = (unsigned short *)tarData + j*hp->x; |
| 309 |
|
for (i = 0; i < hp->x; i++) { |
| 310 |
< |
*dp = ((gmap[map(colval(inline[i],RED))] |
| 311 |
< |
+(random()&7)) & 0xf8)<<7; |
| 312 |
< |
*dp |= ((gmap[map(colval(inline[i],GRN))] |
| 313 |
< |
+(random()&7)) & 0xf8)<<2; |
| 314 |
< |
*dp++ |= (gmap[map(colval(inline[i],BLU))] |
| 315 |
< |
+(random()&7))>>3; |
| 310 |
> |
v = inl[i][RED] + (random()&7); |
| 311 |
> |
if (v > 255) v = 255; |
| 312 |
> |
*dp = (v&0xf8)<<7; |
| 313 |
> |
v = inl[i][GRN] + (random()&7); |
| 314 |
> |
if (v > 255) v = 255; |
| 315 |
> |
*dp |= (v&0xf8)<<2; |
| 316 |
> |
v = inl[i][BLU] + (random()&7); |
| 317 |
> |
if (v > 255) v = 255; |
| 318 |
> |
*dp++ |= v>>3; |
| 319 |
|
} |
| 320 |
|
} else { /* hp->dataBits == 24 */ |
| 321 |
|
register unsigned char *dp; |
| 322 |
|
dp = (unsigned char *)tarData + j*3*hp->x; |
| 323 |
|
for (i = 0; i < hp->x; i++) { |
| 324 |
< |
*dp++ = gmap[map(colval(inline[i],BLU))]; |
| 325 |
< |
*dp++ = gmap[map(colval(inline[i],GRN))]; |
| 326 |
< |
*dp++ = gmap[map(colval(inline[i],RED))]; |
| 324 |
> |
*dp++ = inl[i][BLU]; |
| 325 |
> |
*dp++ = inl[i][GRN]; |
| 326 |
> |
*dp++ = inl[i][RED]; |
| 327 |
|
} |
| 328 |
|
} |
| 329 |
|
} |
| 330 |
|
/* write out targa data */ |
| 331 |
|
writetarga(hp, tarData, stdout); |
| 332 |
|
|
| 333 |
< |
free((char *)inline); |
| 334 |
< |
free((char *)tarData); |
| 324 |
< |
#undef map |
| 333 |
> |
free((void *)inl); |
| 334 |
> |
free((void *)tarData); |
| 335 |
|
} |
| 336 |
|
|
| 337 |
|
|
| 341 |
|
FILE *fp; |
| 342 |
|
{ |
| 343 |
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
| 344 |
< |
if (fwrite(d, 3*h->x, h->y, fp) != h->y) |
| 344 |
> |
if (fwrite((char *)d, 3*h->x, h->y, fp) != h->y) |
| 345 |
|
quiterr("error writing targa file"); |
| 346 |
|
return; |
| 347 |
|
} |
| 377 |
|
int r, g, b; |
| 378 |
|
|
| 379 |
|
if (h->dataType == IM_RGB) { /* uncompressed */ |
| 380 |
< |
if (fread(data, 3*h->x, h->y, fp) != h->y) |
| 380 |
> |
if (fread((char *)data, 3*h->x, h->y, fp) != h->y) |
| 381 |
|
goto readerr; |
| 382 |
|
return; |
| 383 |
|
} |