| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rhcopy.c,v 3.32 2019/10/21 18:19:32 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Copy data into a holodeck file |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "platform.h" |
| 9 |
#include "rterror.h" |
| 10 |
#include "holo.h" |
| 11 |
#include "view.h" |
| 12 |
|
| 13 |
#ifndef BKBSIZE |
| 14 |
#define BKBSIZE 256 /* beam clump size (kilobytes) */ |
| 15 |
#endif |
| 16 |
|
| 17 |
int checkdepth = 1; /* check depth (!-d option)? */ |
| 18 |
int checkrepeats = 0; /* check for repeats (-u option)? */ |
| 19 |
int frompicz; /* input from pictures & depth-buffers? */ |
| 20 |
int noutsects; /* number of output sections */ |
| 21 |
char obstr, unobstr; /* flag pointer values */ |
| 22 |
|
| 23 |
char *progname; /* global argv[0] */ |
| 24 |
|
| 25 |
struct phead { |
| 26 |
VIEW vw; |
| 27 |
double expos; |
| 28 |
short gotview; |
| 29 |
short badfmt; |
| 30 |
short altprims; |
| 31 |
}; |
| 32 |
static int openholo(char *fname, int append); |
| 33 |
static void addray(FVECT ro, FVECT rd, double d, COLR cv); |
| 34 |
static gethfunc holheadline; |
| 35 |
static int bpcmp(const void *b1p, const void *b2p); |
| 36 |
static int addclump(HOLO *hp, int *bq, int nb); |
| 37 |
static void addholo(char *hdf); |
| 38 |
static gethfunc picheadline; |
| 39 |
static void addpicz(char *pcf, char *zbf); |
| 40 |
|
| 41 |
|
| 42 |
|
| 43 |
int |
| 44 |
main( |
| 45 |
int argc, |
| 46 |
char *argv[] |
| 47 |
) |
| 48 |
{ |
| 49 |
int i; |
| 50 |
|
| 51 |
progname = argv[0]; |
| 52 |
frompicz = -1; |
| 53 |
for (i = 2; i < argc && argv[i][0] == '-'; i++) |
| 54 |
switch (argv[i][1]) { |
| 55 |
case 'u': |
| 56 |
checkrepeats = 1; |
| 57 |
break; |
| 58 |
case 'd': |
| 59 |
checkdepth = 0; |
| 60 |
break; |
| 61 |
case 'h': |
| 62 |
frompicz = 0; |
| 63 |
break; |
| 64 |
case 'p': |
| 65 |
frompicz = 1; |
| 66 |
break; |
| 67 |
default: |
| 68 |
goto userr; |
| 69 |
} |
| 70 |
if (i >= argc || frompicz < 0) |
| 71 |
goto userr; |
| 72 |
if (frompicz && (argc-i)%2) |
| 73 |
goto userr; |
| 74 |
noutsects = openholo(argv[1], 1); |
| 75 |
if (frompicz) { |
| 76 |
for ( ; i < argc; i += 2) |
| 77 |
addpicz(argv[i], argv[i+1]); |
| 78 |
} else { |
| 79 |
if (BKBSIZE*1024*1.5 > hdcachesize) |
| 80 |
hdcachesize = BKBSIZE*1024*1.5; |
| 81 |
for ( ; i < argc; i++) |
| 82 |
addholo(argv[i]); |
| 83 |
} |
| 84 |
quit(0); |
| 85 |
userr: |
| 86 |
fprintf(stderr, "Usage: %s output.hdk [-u][-d] -h inp1.hdk ..\n", |
| 87 |
progname); |
| 88 |
fprintf(stderr, " Or: %s output.hdk [-u][-d] -p inp1.hdr inp1.zbf ..\n", |
| 89 |
progname); |
| 90 |
exit(1); |
| 91 |
} |
| 92 |
|
| 93 |
|
| 94 |
#define H_BADF 01 |
| 95 |
#define H_OBST 02 |
| 96 |
#define H_OBSF 04 |
| 97 |
#define H_SWAP 010 |
| 98 |
|
| 99 |
static int |
| 100 |
holheadline( /* check holodeck header line */ |
| 101 |
char *s, |
| 102 |
void *vhf |
| 103 |
) |
| 104 |
{ |
| 105 |
int be; |
| 106 |
char fmt[MAXFMTLEN]; |
| 107 |
int *hf = vhf; |
| 108 |
|
| 109 |
if (formatval(fmt, s)) { |
| 110 |
if (strcmp(fmt, HOLOFMT)) |
| 111 |
*hf |= H_BADF; |
| 112 |
else |
| 113 |
*hf &= ~H_BADF; |
| 114 |
return(0); |
| 115 |
} |
| 116 |
if (!strncmp(s, "OBSTRUCTIONS=", 13)) { |
| 117 |
s += 13; |
| 118 |
while (*s == ' ') s++; |
| 119 |
if ((*s == 't') | (*s == 'T')) |
| 120 |
*hf |= H_OBST; |
| 121 |
else if ((*s == 'f') | (*s == 'F')) |
| 122 |
*hf |= H_OBSF; |
| 123 |
else |
| 124 |
error(WARNING, "bad OBSTRUCTIONS value in holodeck"); |
| 125 |
return(0); |
| 126 |
} |
| 127 |
if ((be = isbigendian(s)) >= 0) { |
| 128 |
if (be != nativebigendian()) |
| 129 |
*hf |= H_SWAP; |
| 130 |
} |
| 131 |
return(0); |
| 132 |
} |
| 133 |
|
| 134 |
int |
| 135 |
openholo( /* open existing holodeck file for i/o */ |
| 136 |
char *fname, |
| 137 |
int append |
| 138 |
) |
| 139 |
{ |
| 140 |
FILE *fp; |
| 141 |
int fd; |
| 142 |
int hflags = 0; |
| 143 |
off_t nextloc; |
| 144 |
int n; |
| 145 |
/* open holodeck file */ |
| 146 |
if ((fp = fopen(fname, append ? "rb+" : "rb")) == NULL) { |
| 147 |
sprintf(errmsg, "cannot open \"%s\" for %s", fname, |
| 148 |
append ? "appending" : "reading"); |
| 149 |
error(SYSTEM, errmsg); |
| 150 |
} |
| 151 |
/* check header and magic number */ |
| 152 |
if (getheader(fp, holheadline, &hflags) < 0 || |
| 153 |
hflags&(H_BADF|H_SWAP) || getw(fp) != HOLOMAGIC) { |
| 154 |
sprintf(errmsg, "holodeck \"%s\" not in expected format", fname); |
| 155 |
error(USER, errmsg); |
| 156 |
} |
| 157 |
fd = dup(fileno(fp)); /* dup file handle */ |
| 158 |
nextloc = ftell(fp); /* get stdio position */ |
| 159 |
fclose(fp); /* done with stdio */ |
| 160 |
for (n = 0; nextloc > 0L; n++) { /* initialize each section */ |
| 161 |
lseek(fd, nextloc, SEEK_SET); |
| 162 |
read(fd, (char *)&nextloc, sizeof(nextloc)); |
| 163 |
hdinit(fd, NULL)->priv = hflags&H_OBST ? &obstr : |
| 164 |
hflags&H_OBSF ? &unobstr : (char *)NULL; |
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} |
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return(n); |
| 167 |
} |
| 168 |
|
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#undef H_BADF |
| 170 |
#undef H_OBST |
| 171 |
#undef H_OBSF |
| 172 |
|
| 173 |
|
| 174 |
void |
| 175 |
addray( /* add a ray to our output holodeck */ |
| 176 |
FVECT ro, |
| 177 |
FVECT rd, |
| 178 |
double d, |
| 179 |
COLR cv |
| 180 |
) |
| 181 |
{ |
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int sn, bi, n; |
| 183 |
HOLO *hp; |
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GCOORD gc[2]; |
| 185 |
uby8 rr[2][2]; |
| 186 |
BEAM *bp; |
| 187 |
double d0, d1; |
| 188 |
unsigned dc; |
| 189 |
RAYVAL *rv; |
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/* check each output section */ |
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for (sn = noutsects; sn--; ) { |
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hp = hdlist[sn]; |
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d0 = hdinter(gc, rr, &d1, hp, ro, rd); |
| 194 |
if (d <= d0 || d1 < -0.001) |
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continue; /* missed section */ |
| 196 |
if (checkdepth) { /* check depth */ |
| 197 |
if (hp->priv == &obstr && d0 < -0.001) |
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continue; /* ray starts too late */ |
| 199 |
if (hp->priv == &unobstr && d < 0.999*d1) |
| 200 |
continue; /* ray ends too soon */ |
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} |
| 202 |
dc = hdcode(hp, d-d0); |
| 203 |
bi = hdbindex(hp, gc); /* check for duplicates */ |
| 204 |
if (checkrepeats && (bp = hdgetbeam(hp, bi)) != NULL) { |
| 205 |
for (n = bp->nrm, rv = hdbray(bp); n--; rv++) |
| 206 |
if ((hp->priv != NULL || rv->d == dc) && |
| 207 |
rv->r[0][0] == rr[0][0] && |
| 208 |
rv->r[0][1] == rr[0][1] && |
| 209 |
rv->r[1][0] == rr[1][0] && |
| 210 |
rv->r[1][1] == rr[1][1]) |
| 211 |
break; |
| 212 |
if (n >= 0) |
| 213 |
continue; /* found a matching ray */ |
| 214 |
} |
| 215 |
rv = hdnewrays(hp, bi, 1); |
| 216 |
rv->d = dc; |
| 217 |
rv->r[0][0] = rr[0][0]; rv->r[0][1] = rr[0][1]; |
| 218 |
rv->r[1][0] = rr[1][0]; rv->r[1][1] = rr[1][1]; |
| 219 |
copycolr(rv->v, cv); |
| 220 |
} |
| 221 |
} |
| 222 |
|
| 223 |
|
| 224 |
static BEAMI *beamdir; |
| 225 |
|
| 226 |
static int |
| 227 |
bpcmp( /* compare beam positions on disk */ |
| 228 |
const void *b1p, |
| 229 |
const void *b2p |
| 230 |
) |
| 231 |
{ |
| 232 |
off_t pdif = beamdir[*(int*)b1p].fo - beamdir[*(int*)b2p].fo; |
| 233 |
|
| 234 |
if (pdif > 0L) return(1); |
| 235 |
if (pdif < 0L) return(-1); |
| 236 |
return(0); |
| 237 |
} |
| 238 |
|
| 239 |
static int |
| 240 |
addclump( /* transfer the given clump and free */ |
| 241 |
HOLO *hp, |
| 242 |
int *bq, |
| 243 |
int nb |
| 244 |
) |
| 245 |
{ |
| 246 |
GCOORD gc[2]; |
| 247 |
FVECT ro, rd; |
| 248 |
double d; |
| 249 |
int i; |
| 250 |
int k; |
| 251 |
BEAM *bp; |
| 252 |
/* sort based on file position */ |
| 253 |
beamdir = hp->bi; |
| 254 |
qsort((char *)bq, nb, sizeof(*bq), bpcmp); |
| 255 |
/* transfer each beam */ |
| 256 |
for (i = 0; i < nb; i++) { |
| 257 |
bp = hdgetbeam(hp, bq[i]); |
| 258 |
hdbcoord(gc, hp, bq[i]); |
| 259 |
/* add each ray to output */ |
| 260 |
for (k = bp->nrm; k--; ) { |
| 261 |
d = hdray(ro, rd, hp, gc, hdbray(bp)[k].r); |
| 262 |
if (hp->priv == &unobstr) |
| 263 |
VSUM(ro, ro, rd, d); |
| 264 |
else |
| 265 |
d = 0.; |
| 266 |
d = hddepth(hp, hdbray(bp)[k].d) - d; |
| 267 |
addray(ro, rd, d, hdbray(bp)[k].v); |
| 268 |
} |
| 269 |
hdfreebeam(hp, bq[i]); /* free the beam */ |
| 270 |
} |
| 271 |
return(0); |
| 272 |
} |
| 273 |
|
| 274 |
|
| 275 |
void |
| 276 |
addholo( /* add a holodeck file */ |
| 277 |
char *hdf |
| 278 |
) |
| 279 |
{ |
| 280 |
int fd; |
| 281 |
/* open the holodeck for reading */ |
| 282 |
openholo(hdf, 0); |
| 283 |
fd = hdlist[noutsects]->fd; /* remember the file handle */ |
| 284 |
while (hdlist[noutsects] != NULL) { /* load each section */ |
| 285 |
/* clump the beams */ |
| 286 |
clumpbeams(hdlist[noutsects], 0, BKBSIZE*1024, addclump); |
| 287 |
hddone(hdlist[noutsects]); /* free the section */ |
| 288 |
} |
| 289 |
close(fd); /* close input file */ |
| 290 |
hdflush(NULL); /* flush output */ |
| 291 |
} |
| 292 |
|
| 293 |
|
| 294 |
|
| 295 |
static int |
| 296 |
picheadline( /* process picture header line */ |
| 297 |
char *s, |
| 298 |
void *vph |
| 299 |
) |
| 300 |
{ |
| 301 |
char fmt[32]; |
| 302 |
struct phead *ph = vph; |
| 303 |
|
| 304 |
if (formatval(fmt, s)) { |
| 305 |
ph->badfmt = strcmp(fmt, COLRFMT); |
| 306 |
return(0); |
| 307 |
} |
| 308 |
if (isprims(s)) { |
| 309 |
ph->altprims++; /* don't want to deal with this */ |
| 310 |
return(0); |
| 311 |
} |
| 312 |
if (isexpos(s)) { |
| 313 |
ph->expos *= exposval(s); |
| 314 |
return(0); |
| 315 |
} |
| 316 |
if (isview(s)) { |
| 317 |
ph->gotview += sscanview(&ph->vw, s); |
| 318 |
return(0); |
| 319 |
} |
| 320 |
return(0); |
| 321 |
} |
| 322 |
|
| 323 |
|
| 324 |
void |
| 325 |
addpicz( /* add a picture + depth-buffer */ |
| 326 |
char *pcf, |
| 327 |
char *zbf |
| 328 |
) |
| 329 |
{ |
| 330 |
FILE *pfp; |
| 331 |
int zfd; |
| 332 |
COLR *cscn; |
| 333 |
float *zscn; |
| 334 |
struct phead phd; |
| 335 |
int eshft; |
| 336 |
double emult; |
| 337 |
RESOLU prs; |
| 338 |
RREAL vl[2]; |
| 339 |
FVECT ro, rd; |
| 340 |
double aftd; |
| 341 |
COLOR ctmp; |
| 342 |
int j; |
| 343 |
int i; |
| 344 |
/* open files */ |
| 345 |
if ((pfp = fopen(pcf, "rb")) == NULL) { |
| 346 |
sprintf(errmsg, "cannot open picture file \"%s\"", pcf); |
| 347 |
error(SYSTEM, pcf); |
| 348 |
} |
| 349 |
if ((zfd = open(zbf, O_RDONLY)) < 0) { |
| 350 |
sprintf(errmsg, "cannot open depth file \"%s\"", zbf); |
| 351 |
error(SYSTEM, pcf); |
| 352 |
} |
| 353 |
SET_FD_BINARY(zfd); |
| 354 |
/* load picture header */ |
| 355 |
phd.vw = stdview; |
| 356 |
phd.expos = 1.0; |
| 357 |
phd.badfmt = phd.gotview = phd.altprims = 0; |
| 358 |
if (getheader(pfp, picheadline, &phd) < 0 || |
| 359 |
phd.badfmt || !fgetsresolu(&prs, pfp)) { |
| 360 |
sprintf(errmsg, "bad format for picture file \"%s\"", pcf); |
| 361 |
error(USER, errmsg); |
| 362 |
} |
| 363 |
if (!phd.gotview || setview(&phd.vw) != NULL) { |
| 364 |
sprintf(errmsg, "missing/illegal view in picture \"%s\"", |
| 365 |
pcf); |
| 366 |
error(USER, errmsg); |
| 367 |
} |
| 368 |
if (phd.altprims) { |
| 369 |
sprintf(errmsg, "ignoring color primaries in picture \"%s\"", |
| 370 |
pcf); |
| 371 |
error(WARNING, errmsg); |
| 372 |
} |
| 373 |
/* figure out what to do about exposure */ |
| 374 |
if ((phd.expos < 0.99) | (phd.expos > 1.01)) { |
| 375 |
emult = -log(phd.expos)/log(2.); |
| 376 |
eshft = emult >= 0. ? emult+.5 : emult-.5; |
| 377 |
emult -= (double)eshft; |
| 378 |
if ((emult <= 0.01) & (emult >= -0.01)) |
| 379 |
emult = -1.; |
| 380 |
else { |
| 381 |
emult = 1./phd.expos; |
| 382 |
eshft = 0; |
| 383 |
} |
| 384 |
} else { |
| 385 |
emult = -1.; |
| 386 |
eshft = 0; |
| 387 |
} |
| 388 |
/* allocate buffers */ |
| 389 |
cscn = (COLR *)malloc(scanlen(&prs)*sizeof(COLR)); |
| 390 |
zscn = (float *)malloc(scanlen(&prs)*sizeof(float)); |
| 391 |
if ((cscn == NULL) | (zscn == NULL)) |
| 392 |
error(SYSTEM, "out of memory in addpicz"); |
| 393 |
/* read and process each scanline */ |
| 394 |
for (j = 0; j < numscans(&prs); j++) { |
| 395 |
i = scanlen(&prs); /* read colrs */ |
| 396 |
if (freadcolrs(cscn, i, pfp) < 0) { |
| 397 |
sprintf(errmsg, "error reading picture \"%s\"", pcf); |
| 398 |
error(USER, errmsg); |
| 399 |
} |
| 400 |
if (eshft) /* shift exposure */ |
| 401 |
shiftcolrs(cscn, i, eshft); |
| 402 |
/* read depth */ |
| 403 |
if (read(zfd, zscn, i*sizeof(float)) != i*sizeof(float)) { |
| 404 |
sprintf(errmsg, "error reading depth file \"%s\"", zbf); |
| 405 |
error(USER, errmsg); |
| 406 |
} |
| 407 |
while (i--) { /* process each pixel */ |
| 408 |
if (zscn[i] <= 0.0) |
| 409 |
continue; /* illegal depth */ |
| 410 |
pix2loc(vl, &prs, i, j); |
| 411 |
aftd = viewray(ro, rd, &phd.vw, vl[0], vl[1]); |
| 412 |
if (aftd < -FTINY) |
| 413 |
continue; /* off view */ |
| 414 |
if (aftd > FTINY && zscn[i] > aftd) |
| 415 |
continue; /* aft clipped */ |
| 416 |
if (emult > 0.) { /* whatta pain */ |
| 417 |
colr_color(ctmp, cscn[i]); |
| 418 |
scalecolor(ctmp, emult); |
| 419 |
setcolr(cscn[i], colval(ctmp,RED), |
| 420 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
| 421 |
} |
| 422 |
addray(ro, rd, (double)zscn[i], cscn[i]); |
| 423 |
} |
| 424 |
} |
| 425 |
/* write output and free beams */ |
| 426 |
hdflush(NULL); |
| 427 |
/* clean up */ |
| 428 |
free((void *)cscn); |
| 429 |
free((void *)zscn); |
| 430 |
fclose(pfp); |
| 431 |
close(zfd); |
| 432 |
} |
| 433 |
|
| 434 |
|
| 435 |
void |
| 436 |
eputs( /* put error message to stderr */ |
| 437 |
char *s |
| 438 |
) |
| 439 |
{ |
| 440 |
static int midline = 0; |
| 441 |
|
| 442 |
if (!*s) |
| 443 |
return; |
| 444 |
if (!midline++) { /* prepend line with program name */ |
| 445 |
fputs(progname, stderr); |
| 446 |
fputs(": ", stderr); |
| 447 |
} |
| 448 |
fputs(s, stderr); |
| 449 |
if (s[strlen(s)-1] == '\n') { |
| 450 |
fflush(stderr); |
| 451 |
midline = 0; |
| 452 |
} |
| 453 |
} |
| 454 |
|
| 455 |
|
| 456 |
void |
| 457 |
quit( /* exit the program gracefully */ |
| 458 |
int code |
| 459 |
) |
| 460 |
{ |
| 461 |
hdsync(NULL, 1); /* write out any buffered data */ |
| 462 |
exit(code); |
| 463 |
} |
