| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: ra_bmp.c,v 2.11 2011/05/20 02:06:39 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* program to convert between RADIANCE and Windows BMP file |
| 6 |
*/ |
| 7 |
|
| 8 |
#include <stdio.h> |
| 9 |
#include <math.h> |
| 10 |
#include <string.h> |
| 11 |
|
| 12 |
#include "platform.h" |
| 13 |
#include "color.h" |
| 14 |
#include "tonemap.h" |
| 15 |
#include "resolu.h" |
| 16 |
#include "bmpfile.h" |
| 17 |
|
| 18 |
int bradj = 0; /* brightness adjustment */ |
| 19 |
|
| 20 |
double gamcor = 2.2; /* gamma correction value */ |
| 21 |
|
| 22 |
char *progname; |
| 23 |
|
| 24 |
static void quiterr(const char *err); |
| 25 |
static void tmap2bmp(char *fnin, char *fnout, char *expec, |
| 26 |
RGBPRIMP monpri, double gamval); |
| 27 |
static void rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, RGBPRIMP monpri); |
| 28 |
static void bmp2rad(BMPReader *brd, FILE *rfp, int inv); |
| 29 |
|
| 30 |
static RGBPRIMP rgbinp = stdprims; /* RGB input primitives */ |
| 31 |
static RGBPRIMS myinprims; /* custom primitives holder */ |
| 32 |
|
| 33 |
static gethfunc headline; |
| 34 |
|
| 35 |
|
| 36 |
int |
| 37 |
main(int argc, char *argv[]) |
| 38 |
{ |
| 39 |
char *inpfile=NULL, *outfile=NULL; |
| 40 |
char *expec = NULL; |
| 41 |
int reverse = 0; |
| 42 |
RGBPRIMP rgbp = stdprims; |
| 43 |
RGBPRIMS myprims; |
| 44 |
RESOLU rs; |
| 45 |
int i; |
| 46 |
|
| 47 |
progname = argv[0]; |
| 48 |
|
| 49 |
for (i = 1; i < argc; i++) |
| 50 |
if (argv[i][0] == '-' && argv[i][1]) |
| 51 |
switch (argv[i][1]) { |
| 52 |
case 'b': |
| 53 |
rgbp = NULL; |
| 54 |
break; |
| 55 |
case 'g': |
| 56 |
gamcor = atof(argv[++i]); |
| 57 |
break; |
| 58 |
case 'e': |
| 59 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
| 60 |
expec = argv[++i]; |
| 61 |
else |
| 62 |
bradj = atoi(argv[++i]); |
| 63 |
break; |
| 64 |
case 'p': |
| 65 |
if (argc-i < 9) |
| 66 |
goto userr; |
| 67 |
myprims[RED][CIEX] = atof(argv[++i]); |
| 68 |
myprims[RED][CIEY] = atof(argv[++i]); |
| 69 |
myprims[GRN][CIEX] = atof(argv[++i]); |
| 70 |
myprims[GRN][CIEY] = atof(argv[++i]); |
| 71 |
myprims[BLU][CIEX] = atof(argv[++i]); |
| 72 |
myprims[BLU][CIEY] = atof(argv[++i]); |
| 73 |
myprims[WHT][CIEX] = atof(argv[++i]); |
| 74 |
myprims[WHT][CIEY] = atof(argv[++i]); |
| 75 |
if (rgbp == stdprims) |
| 76 |
rgbp = myprims; |
| 77 |
break; |
| 78 |
case 'r': |
| 79 |
reverse = !reverse; |
| 80 |
break; |
| 81 |
default: |
| 82 |
goto userr; |
| 83 |
} |
| 84 |
else |
| 85 |
break; |
| 86 |
|
| 87 |
if (i < argc-2) |
| 88 |
goto userr; |
| 89 |
|
| 90 |
SET_FILE_BINARY(stdin); |
| 91 |
SET_FILE_BINARY(stdout); |
| 92 |
SET_DEFAULT_BINARY(); |
| 93 |
|
| 94 |
if (i <= argc-1 && strcmp(argv[i], "-")) |
| 95 |
inpfile = argv[i]; |
| 96 |
|
| 97 |
if (i == argc-2 && strcmp(argv[i+1], "-")) |
| 98 |
outfile = argv[i+1]; |
| 99 |
/* check for tone-mapping */ |
| 100 |
if (expec != NULL) { |
| 101 |
if (reverse) |
| 102 |
goto userr; |
| 103 |
tmap2bmp(inpfile, outfile, expec, rgbp, gamcor); |
| 104 |
return(0); |
| 105 |
} |
| 106 |
|
| 107 |
setcolrgam(gamcor); /* set up conversion */ |
| 108 |
|
| 109 |
if (reverse) { |
| 110 |
BMPReader *rdr; |
| 111 |
/* open BMP file or stream */ |
| 112 |
if (inpfile != NULL) |
| 113 |
rdr = BMPopenInputFile(inpfile); |
| 114 |
else |
| 115 |
rdr = BMPopenInputStream(stdin); |
| 116 |
|
| 117 |
if (rdr == NULL) { |
| 118 |
fprintf(stderr, "%s: cannot open or recognize BMP\n", |
| 119 |
inpfile != NULL ? inpfile : "<stdin>"); |
| 120 |
exit(1); |
| 121 |
} |
| 122 |
/* open Radiance output */ |
| 123 |
if (outfile != NULL && freopen(outfile, "w", stdout) == NULL) { |
| 124 |
fprintf(stderr, "%s: cannot open for output\n", |
| 125 |
outfile); |
| 126 |
exit(1); |
| 127 |
} |
| 128 |
/* put Radiance header */ |
| 129 |
newheader("RADIANCE", stdout); |
| 130 |
printargs(i, argv, stdout); |
| 131 |
fputformat(COLRFMT, stdout); |
| 132 |
putchar('\n'); |
| 133 |
rs.xr = rdr->hdr->width; |
| 134 |
rs.yr = rdr->hdr->height; |
| 135 |
rs.rt = YMAJOR; |
| 136 |
/* write scans downward if we can */ |
| 137 |
if (rdr->hdr->yIsDown || inpfile != NULL) |
| 138 |
rs.rt |= YDECR; |
| 139 |
fputsresolu(&rs, stdout); |
| 140 |
/* convert file */ |
| 141 |
bmp2rad(rdr, stdout, !rdr->hdr->yIsDown && inpfile!=NULL); |
| 142 |
/* flush output */ |
| 143 |
BMPcloseInput(rdr); |
| 144 |
if (fflush(stdout) < 0) |
| 145 |
quiterr("error writing Radiance output"); |
| 146 |
} else { |
| 147 |
BMPHeader *hdr; |
| 148 |
BMPWriter *wtr; |
| 149 |
/* open Radiance input */ |
| 150 |
if (inpfile != NULL && freopen(inpfile, "r", stdin) == NULL) { |
| 151 |
fprintf(stderr, "%s: cannot open input file\n", |
| 152 |
inpfile); |
| 153 |
exit(1); |
| 154 |
} |
| 155 |
/* get header info. */ |
| 156 |
if (getheader(stdin, headline, NULL) < 0 || |
| 157 |
!fgetsresolu(&rs, stdin)) |
| 158 |
quiterr("bad Radiance picture format"); |
| 159 |
/* initialize BMP header */ |
| 160 |
if (rgbp == NULL) { |
| 161 |
hdr = BMPmappedHeader(scanlen(&rs), |
| 162 |
numscans(&rs), 0, 256); |
| 163 |
/* |
| 164 |
if (outfile != NULL) |
| 165 |
hdr->compr = BI_RLE8; |
| 166 |
*/ |
| 167 |
} else |
| 168 |
hdr = BMPtruecolorHeader(scanlen(&rs), |
| 169 |
numscans(&rs), 0); |
| 170 |
if (hdr == NULL) |
| 171 |
quiterr("cannot initialize BMP header"); |
| 172 |
/* set up output direction */ |
| 173 |
hdr->yIsDown = ((outfile == NULL) | (hdr->compr == BI_RLE8)); |
| 174 |
/* open BMP output */ |
| 175 |
if (outfile != NULL) |
| 176 |
wtr = BMPopenOutputFile(outfile, hdr); |
| 177 |
else |
| 178 |
wtr = BMPopenOutputStream(stdout, hdr); |
| 179 |
if (wtr == NULL) |
| 180 |
quiterr("cannot allocate writer structure"); |
| 181 |
/* convert file */ |
| 182 |
rad2bmp(stdin, wtr, !hdr->yIsDown, rgbp); |
| 183 |
/* flush output */ |
| 184 |
if (fflush((FILE *)wtr->c_data) < 0) |
| 185 |
quiterr("error writing BMP output"); |
| 186 |
BMPcloseOutput(wtr); |
| 187 |
} |
| 188 |
return(0); /* success */ |
| 189 |
userr: |
| 190 |
fprintf(stderr, |
| 191 |
"Usage: %s [-b][-g gamma][-e spec][-p xr yr xg yg xb yb xw yw] [input|- [output]]\n", |
| 192 |
progname); |
| 193 |
fprintf(stderr, |
| 194 |
" or: %s -r [-g gamma][-e +/-stops] [input|- [output]]\n", |
| 195 |
progname); |
| 196 |
return(1); |
| 197 |
} |
| 198 |
|
| 199 |
/* print message and exit */ |
| 200 |
static void |
| 201 |
quiterr(const char *err) |
| 202 |
{ |
| 203 |
if (err != NULL) { |
| 204 |
fprintf(stderr, "%s: %s\n", progname, err); |
| 205 |
exit(1); |
| 206 |
} |
| 207 |
exit(0); |
| 208 |
} |
| 209 |
|
| 210 |
/* process header line (don't echo) */ |
| 211 |
static int |
| 212 |
headline(char *s, void *p) |
| 213 |
{ |
| 214 |
char fmt[MAXFMTLEN]; |
| 215 |
|
| 216 |
if (formatval(fmt, s)) { /* check if format string */ |
| 217 |
if (!strcmp(fmt,COLRFMT)) |
| 218 |
return(0); |
| 219 |
if (!strcmp(fmt,CIEFMT)) { |
| 220 |
rgbinp = TM_XYZPRIM; |
| 221 |
return(0); |
| 222 |
} |
| 223 |
return(-1); |
| 224 |
} |
| 225 |
if (isprims(s)) { /* get input primaries */ |
| 226 |
primsval(myinprims, s); |
| 227 |
rgbinp = myinprims; |
| 228 |
return(0); |
| 229 |
} |
| 230 |
/* should I grok colcorr also? */ |
| 231 |
return(0); |
| 232 |
} |
| 233 |
|
| 234 |
|
| 235 |
/* convert Radiance picture to BMP */ |
| 236 |
static void |
| 237 |
rad2bmp(FILE *rfp, BMPWriter *bwr, int inv, RGBPRIMP monpri) |
| 238 |
{ |
| 239 |
int usexfm = 0; |
| 240 |
COLORMAT xfm; |
| 241 |
COLR *scanin; |
| 242 |
COLOR cval; |
| 243 |
int y, yend, ystp; |
| 244 |
int x; |
| 245 |
/* allocate scanline */ |
| 246 |
scanin = (COLR *)malloc(bwr->hdr->width*sizeof(COLR)); |
| 247 |
if (scanin == NULL) |
| 248 |
quiterr("out of memory in rad2bmp"); |
| 249 |
/* set up color conversion */ |
| 250 |
usexfm = (monpri != NULL ? rgbinp != monpri : |
| 251 |
rgbinp != TM_XYZPRIM && rgbinp != stdprims); |
| 252 |
if (usexfm) { |
| 253 |
double expcomp = pow(2.0, (double)bradj); |
| 254 |
if (rgbinp == TM_XYZPRIM) |
| 255 |
compxyz2rgbWBmat(xfm, monpri); |
| 256 |
else |
| 257 |
comprgb2rgbWBmat(xfm, rgbinp, monpri); |
| 258 |
for (y = 0; y < 3; y++) |
| 259 |
for (x = 0; x < 3; x++) |
| 260 |
xfm[y][x] *= expcomp; |
| 261 |
} |
| 262 |
/* convert image */ |
| 263 |
if (inv) { |
| 264 |
y = bwr->hdr->height - 1; |
| 265 |
ystp = -1; yend = -1; |
| 266 |
} else { |
| 267 |
y = 0; |
| 268 |
ystp = 1; yend = bwr->hdr->height; |
| 269 |
} |
| 270 |
/* convert each scanline */ |
| 271 |
for ( ; y != yend; y += ystp) { |
| 272 |
if (freadcolrs(scanin, bwr->hdr->width, rfp) < 0) |
| 273 |
quiterr("error reading Radiance picture"); |
| 274 |
if (usexfm) |
| 275 |
for (x = bwr->hdr->width; x--; ) { |
| 276 |
colr_color(cval, scanin[x]); |
| 277 |
colortrans(cval, xfm, cval); |
| 278 |
setcolr(scanin[x], colval(cval,RED), |
| 279 |
colval(cval,GRN), |
| 280 |
colval(cval,BLU)); |
| 281 |
} |
| 282 |
else if (bradj) |
| 283 |
shiftcolrs(scanin, bwr->hdr->width, bradj); |
| 284 |
if (monpri == NULL && rgbinp != TM_XYZPRIM) |
| 285 |
for (x = bwr->hdr->width; x--; ) |
| 286 |
scanin[x][GRN] = normbright(scanin[x]); |
| 287 |
colrs_gambs(scanin, bwr->hdr->width); |
| 288 |
if (monpri == NULL) |
| 289 |
for (x = bwr->hdr->width; x--; ) |
| 290 |
bwr->scanline[x] = scanin[x][GRN]; |
| 291 |
else |
| 292 |
for (x = bwr->hdr->width; x--; ) { |
| 293 |
bwr->scanline[3*x] = scanin[x][BLU]; |
| 294 |
bwr->scanline[3*x+1] = scanin[x][GRN]; |
| 295 |
bwr->scanline[3*x+2] = scanin[x][RED]; |
| 296 |
} |
| 297 |
bwr->yscan = y; |
| 298 |
x = BMPwriteScanline(bwr); |
| 299 |
if (x != BIR_OK) |
| 300 |
quiterr(BMPerrorMessage(x)); |
| 301 |
} |
| 302 |
/* free scanline */ |
| 303 |
free((void *)scanin); |
| 304 |
} |
| 305 |
|
| 306 |
/* convert BMP file to Radiance */ |
| 307 |
static void |
| 308 |
bmp2rad(BMPReader *brd, FILE *rfp, int inv) |
| 309 |
{ |
| 310 |
COLR *scanout; |
| 311 |
int y, yend, ystp; |
| 312 |
int x; |
| 313 |
/* allocate scanline */ |
| 314 |
scanout = (COLR *)malloc(brd->hdr->width*sizeof(COLR)); |
| 315 |
if (scanout == NULL) |
| 316 |
quiterr("out of memory in bmp2rad"); |
| 317 |
/* convert image */ |
| 318 |
if (inv) { |
| 319 |
y = brd->hdr->height - 1; |
| 320 |
ystp = -1; yend = -1; |
| 321 |
} else { |
| 322 |
y = 0; |
| 323 |
ystp = 1; yend = brd->hdr->height; |
| 324 |
} |
| 325 |
/* convert each scanline */ |
| 326 |
for ( ; y != yend; y += ystp) { |
| 327 |
x = BMPseekScanline(y, brd); |
| 328 |
if (x != BIR_OK) |
| 329 |
quiterr(BMPerrorMessage(x)); |
| 330 |
for (x = brd->hdr->width; x--; ) { |
| 331 |
RGBquad rgbq = BMPdecodePixel(x, brd); |
| 332 |
scanout[x][RED] = rgbq.r; |
| 333 |
scanout[x][GRN] = rgbq.g; |
| 334 |
scanout[x][BLU] = rgbq.b; |
| 335 |
} |
| 336 |
gambs_colrs(scanout, brd->hdr->width); |
| 337 |
if (bradj) |
| 338 |
shiftcolrs(scanout, brd->hdr->width, bradj); |
| 339 |
if (fwritecolrs(scanout, brd->hdr->width, rfp) < 0) |
| 340 |
quiterr("error writing Radiance picture"); |
| 341 |
} |
| 342 |
/* clean up */ |
| 343 |
free((void *)scanout); |
| 344 |
} |
| 345 |
|
| 346 |
/* Tone-map and convert Radiance picture */ |
| 347 |
static void |
| 348 |
tmap2bmp(char *fnin, char *fnout, char *expec, RGBPRIMP monpri, double gamval) |
| 349 |
{ |
| 350 |
int tmflags; |
| 351 |
BMPHeader *hdr; |
| 352 |
BMPWriter *wtr; |
| 353 |
FILE *fp; |
| 354 |
int xr, yr; |
| 355 |
uby8 *pa; |
| 356 |
int i; |
| 357 |
/* check tone-mapping spec */ |
| 358 |
i = strlen(expec); |
| 359 |
if (i && !strncmp(expec, "auto", i)) |
| 360 |
tmflags = TM_F_CAMERA; |
| 361 |
else if (i && !strncmp(expec, "human", i)) |
| 362 |
tmflags = TM_F_HUMAN & ~TM_F_UNIMPL; |
| 363 |
else if (i && !strncmp(expec, "linear", i)) |
| 364 |
tmflags = TM_F_LINEAR; |
| 365 |
else |
| 366 |
quiterr("illegal exposure specification (auto|human|linear)"); |
| 367 |
if (monpri == NULL) { |
| 368 |
tmflags |= TM_F_BW; |
| 369 |
monpri = stdprims; |
| 370 |
} |
| 371 |
/* open Radiance input */ |
| 372 |
if (fnin == NULL) |
| 373 |
fp = stdin; |
| 374 |
else if ((fp = fopen(fnin, "r")) == NULL) { |
| 375 |
fprintf(stderr, "%s: cannot open\n", fnin); |
| 376 |
exit(1); |
| 377 |
} |
| 378 |
/* tone-map picture */ |
| 379 |
if (tmMapPicture(&pa, &xr, &yr, tmflags, monpri, gamval, |
| 380 |
0., 0., fnin, fp) != TM_E_OK) |
| 381 |
exit(1); |
| 382 |
/* initialize BMP header */ |
| 383 |
if (tmflags & TM_F_BW) { |
| 384 |
hdr = BMPmappedHeader(xr, yr, 0, 256); |
| 385 |
if (fnout != NULL) |
| 386 |
hdr->compr = BI_RLE8; |
| 387 |
} else |
| 388 |
hdr = BMPtruecolorHeader(xr, yr, 0); |
| 389 |
if (hdr == NULL) |
| 390 |
quiterr("cannot initialize BMP header"); |
| 391 |
/* open BMP output */ |
| 392 |
if (fnout != NULL) |
| 393 |
wtr = BMPopenOutputFile(fnout, hdr); |
| 394 |
else |
| 395 |
wtr = BMPopenOutputStream(stdout, hdr); |
| 396 |
if (wtr == NULL) |
| 397 |
quiterr("cannot allocate writer structure"); |
| 398 |
/* write to BMP file */ |
| 399 |
while (wtr->yscan < yr) { |
| 400 |
uby8 *scn = pa + xr*((tmflags & TM_F_BW) ? 1 : 3)* |
| 401 |
(yr-1 - wtr->yscan); |
| 402 |
if (tmflags & TM_F_BW) |
| 403 |
memcpy((void *)wtr->scanline, (void *)scn, xr); |
| 404 |
else |
| 405 |
for (i = xr; i--; ) { |
| 406 |
wtr->scanline[3*i] = scn[3*i+BLU]; |
| 407 |
wtr->scanline[3*i+1] = scn[3*i+GRN]; |
| 408 |
wtr->scanline[3*i+2] = scn[3*i+RED]; |
| 409 |
} |
| 410 |
if ((i = BMPwriteScanline(wtr)) != BIR_OK) |
| 411 |
quiterr(BMPerrorMessage(i)); |
| 412 |
} |
| 413 |
/* flush output */ |
| 414 |
if (fflush((FILE *)wtr->c_data) < 0) |
| 415 |
quiterr("error writing BMP output"); |
| 416 |
/* clean up */ |
| 417 |
if (fnin != NULL) |
| 418 |
fclose(fp); |
| 419 |
free((void *)pa); |
| 420 |
BMPcloseOutput(wtr); |
| 421 |
} |
