| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rmatrix.c,v 2.89 2025/04/04 18:06:48 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* General matrix operations. |
| 6 |
*/ |
| 7 |
|
| 8 |
#include <stdlib.h> |
| 9 |
#include <errno.h> |
| 10 |
#include "rtio.h" |
| 11 |
#include "platform.h" |
| 12 |
#include "resolu.h" |
| 13 |
#include "paths.h" |
| 14 |
#include "rmatrix.h" |
| 15 |
#if !defined(_WIN32) && !defined(_WIN64) |
| 16 |
#include <sys/mman.h> |
| 17 |
#endif |
| 18 |
|
| 19 |
static const char rmx_mismatch_warn[] = "WARNING: data type mismatch\n"; |
| 20 |
|
| 21 |
/* Initialize a RMATRIX struct but don't allocate array space */ |
| 22 |
RMATRIX * |
| 23 |
rmx_new(int nr, int nc, int n) |
| 24 |
{ |
| 25 |
RMATRIX *dnew; |
| 26 |
|
| 27 |
if (n <= 0) |
| 28 |
return(NULL); |
| 29 |
|
| 30 |
dnew = (RMATRIX *)calloc(1, sizeof(RMATRIX)); |
| 31 |
if (!dnew) |
| 32 |
return(NULL); |
| 33 |
|
| 34 |
dnew->dtype = DTrmx_native; |
| 35 |
dnew->nrows = nr; |
| 36 |
dnew->ncols = nc; |
| 37 |
dnew->ncomp = n; |
| 38 |
setcolor(dnew->cexp, 1.f, 1.f, 1.f); |
| 39 |
memcpy(dnew->wlpart, WLPART, sizeof(dnew->wlpart)); |
| 40 |
|
| 41 |
return(dnew); |
| 42 |
} |
| 43 |
|
| 44 |
/* Prepare a RMATRIX for writing (allocate array if needed) */ |
| 45 |
int |
| 46 |
rmx_prepare(RMATRIX *rm) |
| 47 |
{ |
| 48 |
if (!rm) return(0); |
| 49 |
if (rm->mtx) /* assume it's right size */ |
| 50 |
return(1); |
| 51 |
if ((rm->nrows <= 0) | (rm->ncols <= 0) | (rm->ncomp <= 0)) |
| 52 |
return(0); |
| 53 |
rm->mtx = (rmx_dtype *)malloc(rmx_array_size(rm)); |
| 54 |
rm->pflags |= RMF_FREEMEM; |
| 55 |
return(rm->mtx != NULL); |
| 56 |
} |
| 57 |
|
| 58 |
/* Call rmx_new() and rmx_prepare() */ |
| 59 |
RMATRIX * |
| 60 |
rmx_alloc(int nr, int nc, int n) |
| 61 |
{ |
| 62 |
RMATRIX *dnew = rmx_new(nr, nc, n); |
| 63 |
|
| 64 |
if (!rmx_prepare(dnew)) { |
| 65 |
rmx_free(dnew); |
| 66 |
return(NULL); |
| 67 |
} |
| 68 |
return(dnew); |
| 69 |
} |
| 70 |
|
| 71 |
/* Clear state by freeing info and matrix data */ |
| 72 |
void |
| 73 |
rmx_reset(RMATRIX *rm) |
| 74 |
{ |
| 75 |
if (!rm) return; |
| 76 |
if (rm->info) { |
| 77 |
free(rm->info); |
| 78 |
rm->info = NULL; |
| 79 |
} |
| 80 |
#ifdef MAP_FILE |
| 81 |
if (rm->mapped) { |
| 82 |
munmap(rm->mapped, rmx_mapped_size(rm)); |
| 83 |
rm->mapped = NULL; |
| 84 |
} else |
| 85 |
#endif |
| 86 |
if (rm->pflags & RMF_FREEMEM) { |
| 87 |
free(rm->mtx); |
| 88 |
rm->pflags &= ~RMF_FREEMEM; |
| 89 |
} |
| 90 |
rm->mtx = NULL; |
| 91 |
} |
| 92 |
|
| 93 |
/* Free an RMATRIX struct and data */ |
| 94 |
void |
| 95 |
rmx_free(RMATRIX *rm) |
| 96 |
{ |
| 97 |
if (!rm) return; |
| 98 |
rmx_reset(rm); |
| 99 |
free(rm); |
| 100 |
} |
| 101 |
|
| 102 |
/* Resolve data type based on two input types (returns 0 for mismatch) */ |
| 103 |
int |
| 104 |
rmx_newtype(int dtyp1, int dtyp2) |
| 105 |
{ |
| 106 |
if ((dtyp1==DTxyze) | (dtyp1==DTrgbe) | (dtyp1==DTspec) | |
| 107 |
(dtyp2==DTxyze) | (dtyp2==DTrgbe) | (dtyp2==DTspec) |
| 108 |
&& dtyp1 != dtyp2) |
| 109 |
return(0); |
| 110 |
if (dtyp1 < dtyp2) |
| 111 |
return(dtyp1); |
| 112 |
return(dtyp2); |
| 113 |
} |
| 114 |
|
| 115 |
/* Append header information associated with matrix data */ |
| 116 |
int |
| 117 |
rmx_addinfo(RMATRIX *rm, const char *info) |
| 118 |
{ |
| 119 |
size_t oldlen = 0; |
| 120 |
|
| 121 |
if (!rm || !info || !*info) |
| 122 |
return(0); |
| 123 |
if (!rm->info) { |
| 124 |
rm->info = (char *)malloc(strlen(info)+1); |
| 125 |
} else { |
| 126 |
oldlen = strlen(rm->info); |
| 127 |
rm->info = (char *)realloc(rm->info, |
| 128 |
oldlen+strlen(info)+1); |
| 129 |
} |
| 130 |
if (!rm->info) |
| 131 |
return(0); |
| 132 |
strcpy(rm->info+oldlen, info); |
| 133 |
return(1); |
| 134 |
} |
| 135 |
|
| 136 |
static int |
| 137 |
get_dminfo(char *s, void *p) |
| 138 |
{ |
| 139 |
RMATRIX *ip = (RMATRIX *)p; |
| 140 |
char fmt[MAXFMTLEN]; |
| 141 |
int i; |
| 142 |
|
| 143 |
if (isheadid(s)) |
| 144 |
return(0); |
| 145 |
if (isncomp(s)) { |
| 146 |
ip->ncomp = ncompval(s); |
| 147 |
return(ip->ncomp - 1); |
| 148 |
} |
| 149 |
if (!strncmp(s, "NROWS=", 6)) { |
| 150 |
ip->nrows = atoi(s+6); |
| 151 |
return(ip->nrows - 1); |
| 152 |
} |
| 153 |
if (!strncmp(s, "NCOLS=", 6)) { |
| 154 |
ip->ncols = atoi(s+6); |
| 155 |
return(ip->ncols - 1); |
| 156 |
} |
| 157 |
if ((i = isbigendian(s)) >= 0) { |
| 158 |
if (nativebigendian() != i) |
| 159 |
ip->pflags |= RMF_SWAPIN; |
| 160 |
else |
| 161 |
ip->pflags &= ~RMF_SWAPIN; |
| 162 |
return(0); |
| 163 |
} |
| 164 |
if (isexpos(s)) { |
| 165 |
float f = exposval(s); |
| 166 |
scalecolor(ip->cexp, f); |
| 167 |
return(f > .0 ? 0 : -1); |
| 168 |
} |
| 169 |
if (iscolcor(s)) { |
| 170 |
COLOR ctmp; |
| 171 |
if (!colcorval(ctmp, s)) return(-1); |
| 172 |
multcolor(ip->cexp, ctmp); |
| 173 |
return(0); |
| 174 |
} |
| 175 |
if (iswlsplit(s)) |
| 176 |
return(wlsplitval(ip->wlpart, s) - 1); |
| 177 |
|
| 178 |
if (!formatval(fmt, s)) { |
| 179 |
rmx_addinfo(ip, s); |
| 180 |
return(0); |
| 181 |
} /* else check format */ |
| 182 |
for (i = 1; i < DTend; i++) |
| 183 |
if (!strcmp(fmt, cm_fmt_id[i])) { |
| 184 |
ip->dtype = i; |
| 185 |
return(0); |
| 186 |
} |
| 187 |
return(-1); /* bad format */ |
| 188 |
} |
| 189 |
|
| 190 |
static int |
| 191 |
rmx_load_ascii(rmx_dtype *drp, const RMATRIX *rm, FILE *fp) |
| 192 |
{ |
| 193 |
int j, k; |
| 194 |
|
| 195 |
for (j = 0; j < rm->ncols; j++) |
| 196 |
for (k = rm->ncomp; k-- > 0; ) |
| 197 |
if (fscanf(fp, rmx_scanfmt, drp++) != 1) |
| 198 |
return(0); |
| 199 |
return(1); |
| 200 |
} |
| 201 |
|
| 202 |
static int |
| 203 |
rmx_load_float(rmx_dtype *drp, const RMATRIX *rm, FILE *fp) |
| 204 |
{ |
| 205 |
#if DTrmx_native==DTfloat |
| 206 |
if (getbinary(drp, sizeof(*drp)*rm->ncomp, rm->ncols, fp) != rm->ncols) |
| 207 |
return(0); |
| 208 |
if (rm->pflags & RMF_SWAPIN) |
| 209 |
swap32((char *)drp, rm->ncols*rm->ncomp); |
| 210 |
#else |
| 211 |
int j, k; |
| 212 |
float val[MAXCOMP]; |
| 213 |
|
| 214 |
if (rm->ncomp > MAXCOMP) { |
| 215 |
fputs("Unsupported # components in rmx_load_float()\n", stderr); |
| 216 |
exit(1); |
| 217 |
} |
| 218 |
for (j = 0; j < rm->ncols; j++) { |
| 219 |
if (getbinary(val, sizeof(val[0]), rm->ncomp, fp) != rm->ncomp) |
| 220 |
return(0); |
| 221 |
if (rm->pflags & RMF_SWAPIN) |
| 222 |
swap32((char *)val, rm->ncomp); |
| 223 |
for (k = 0; k < rm->ncomp; k++) |
| 224 |
*drp++ = val[k]; |
| 225 |
} |
| 226 |
#endif |
| 227 |
return(1); |
| 228 |
} |
| 229 |
|
| 230 |
static int |
| 231 |
rmx_load_double(rmx_dtype *drp, const RMATRIX *rm, FILE *fp) |
| 232 |
{ |
| 233 |
#if DTrmx_native==DTdouble |
| 234 |
if (getbinary(drp, sizeof(*drp)*rm->ncomp, rm->ncols, fp) != rm->ncols) |
| 235 |
return(0); |
| 236 |
if (rm->pflags & RMF_SWAPIN) |
| 237 |
swap64((char *)drp, rm->ncols*rm->ncomp); |
| 238 |
#else |
| 239 |
int j, k; |
| 240 |
double val[MAXCOMP]; |
| 241 |
|
| 242 |
if (rm->ncomp > MAXCOMP) { |
| 243 |
fputs("Unsupported # components in rmx_load_double()\n", stderr); |
| 244 |
exit(1); |
| 245 |
} |
| 246 |
for (j = 0; j < rm->ncols; j++) { |
| 247 |
if (getbinary(val, sizeof(val[0]), rm->ncomp, fp) != rm->ncomp) |
| 248 |
return(0); |
| 249 |
if (rm->pflags & RMF_SWAPIN) |
| 250 |
swap64((char *)val, rm->ncomp); |
| 251 |
for (k = 0; k < rm->ncomp; k++) |
| 252 |
*drp++ = (float)val[k]; |
| 253 |
} |
| 254 |
#endif |
| 255 |
return(1); |
| 256 |
} |
| 257 |
|
| 258 |
static int |
| 259 |
rmx_load_rgbe(rmx_dtype *drp, const RMATRIX *rm, FILE *fp) |
| 260 |
{ |
| 261 |
COLR *scan; |
| 262 |
COLOR col; |
| 263 |
int j; |
| 264 |
|
| 265 |
if (rm->ncomp != 3) |
| 266 |
return(0); |
| 267 |
scan = (COLR *)tempbuffer(sizeof(COLR)*rm->ncols); |
| 268 |
if (!scan) |
| 269 |
return(0); |
| 270 |
if (freadcolrs(scan, rm->ncols, fp) < 0) |
| 271 |
return(0); |
| 272 |
for (j = 0; j < rm->ncols; j++) { |
| 273 |
colr_color(col, scan[j]); |
| 274 |
*drp++ = colval(col,RED); |
| 275 |
*drp++ = colval(col,GRN); |
| 276 |
*drp++ = colval(col,BLU); |
| 277 |
} |
| 278 |
return(1); |
| 279 |
} |
| 280 |
|
| 281 |
static int |
| 282 |
rmx_load_spec(rmx_dtype *drp, const RMATRIX *rm, FILE *fp) |
| 283 |
{ |
| 284 |
COLRV *scan; |
| 285 |
COLORV scol[MAXCOMP]; |
| 286 |
int j, k; |
| 287 |
|
| 288 |
if ((rm->ncomp < 3) | (rm->ncomp > MAXCOMP)) |
| 289 |
return(0); |
| 290 |
scan = (COLRV *)tempbuffer((rm->ncomp+1)*rm->ncols); |
| 291 |
if (!scan) |
| 292 |
return(0); |
| 293 |
if (freadscolrs(scan, rm->ncomp, rm->ncols, fp) < 0) |
| 294 |
return(0); |
| 295 |
for (j = 0; j < rm->ncols; j++) { |
| 296 |
scolr2scolor(scol, scan+j*(rm->ncomp+1), rm->ncomp); |
| 297 |
for (k = 0; k < rm->ncomp; k++) |
| 298 |
*drp++ = scol[k]; |
| 299 |
} |
| 300 |
return(1); |
| 301 |
} |
| 302 |
|
| 303 |
/* Read matrix header from input stream (cannot be XML) */ |
| 304 |
int |
| 305 |
rmx_load_header(RMATRIX *rm, FILE *fp) |
| 306 |
{ |
| 307 |
if (!rm | !fp) |
| 308 |
return(0); |
| 309 |
rmx_reset(rm); /* clear state */ |
| 310 |
if (rm->nrows | rm->ncols | !rm->dtype) { |
| 311 |
rm->nrows = rm->ncols = 0; |
| 312 |
rm->ncomp = 3; |
| 313 |
setcolor(rm->cexp, 1.f, 1.f, 1.f); |
| 314 |
memcpy(rm->wlpart, WLPART, sizeof(rm->wlpart)); |
| 315 |
rm->pflags = 0; |
| 316 |
} |
| 317 |
rm->dtype = DTascii; /* assumed w/o FORMAT */ |
| 318 |
if (getheader(fp, get_dminfo, rm) < 0) { |
| 319 |
fputs("Bad matrix header\n", stderr); |
| 320 |
return(0); |
| 321 |
} |
| 322 |
if ((rm->dtype == DTrgbe) | (rm->dtype == DTxyze) && |
| 323 |
rm->ncomp != 3) |
| 324 |
return(0); |
| 325 |
if (rm->ncols <= 0 && /* resolution string? */ |
| 326 |
!fscnresolu(&rm->ncols, &rm->nrows, fp)) |
| 327 |
return(0); |
| 328 |
if (rm->dtype == DTascii) /* set file type (WINDOWS) */ |
| 329 |
SET_FILE_TEXT(fp); |
| 330 |
else |
| 331 |
SET_FILE_BINARY(fp); |
| 332 |
return(1); |
| 333 |
} |
| 334 |
|
| 335 |
/* Load next row as rmx_dtype (cannot be XML) */ |
| 336 |
int |
| 337 |
rmx_load_row(rmx_dtype *drp, const RMATRIX *rm, FILE *fp) |
| 338 |
{ |
| 339 |
switch (rm->dtype) { |
| 340 |
case DTascii: |
| 341 |
return(rmx_load_ascii(drp, rm, fp)); |
| 342 |
case DTfloat: |
| 343 |
return(rmx_load_float(drp, rm, fp)); |
| 344 |
case DTdouble: |
| 345 |
return(rmx_load_double(drp, rm, fp)); |
| 346 |
case DTrgbe: |
| 347 |
case DTxyze: |
| 348 |
return(rmx_load_rgbe(drp, rm, fp)); |
| 349 |
case DTspec: |
| 350 |
return(rmx_load_spec(drp, rm, fp)); |
| 351 |
default: |
| 352 |
fputs("Unsupported data type in rmx_load_row()\n", stderr); |
| 353 |
} |
| 354 |
return(0); |
| 355 |
} |
| 356 |
|
| 357 |
/* Allocate & load post-header data from stream given type set in rm->dtype */ |
| 358 |
int |
| 359 |
rmx_load_data(RMATRIX *rm, FILE *fp) |
| 360 |
{ |
| 361 |
int i; |
| 362 |
#ifdef MAP_FILE |
| 363 |
long pos; /* map memory for file > 1MB if possible */ |
| 364 |
if ((rm->dtype == DTrmx_native) & !(rm->pflags & RMF_SWAPIN) & |
| 365 |
(rmx_array_size(rm) >= 1L<<20) && |
| 366 |
(pos = ftell(fp)) >= 0 && !(pos % sizeof(rmx_dtype))) { |
| 367 |
rm->mapped = mmap(NULL, rmx_array_size(rm)+pos, PROT_READ|PROT_WRITE, |
| 368 |
MAP_PRIVATE, fileno(fp), 0); |
| 369 |
if (rm->mapped != MAP_FAILED) { |
| 370 |
if (rm->pflags & RMF_FREEMEM) |
| 371 |
free(rm->mtx); |
| 372 |
rm->mtx = (rmx_dtype *)rm->mapped + pos/sizeof(rmx_dtype); |
| 373 |
rm->pflags &= ~RMF_FREEMEM; |
| 374 |
return(1); |
| 375 |
} /* else fall back on reading into memory */ |
| 376 |
rm->mapped = NULL; |
| 377 |
} |
| 378 |
#endif |
| 379 |
if (!rmx_prepare(rm)) { /* need in-core matrix array */ |
| 380 |
fprintf(stderr, "Cannot allocate %g MByte matrix array\n", |
| 381 |
(1./(1L<<20))*(double)rmx_array_size(rm)); |
| 382 |
return(0); |
| 383 |
} |
| 384 |
for (i = 0; i < rm->nrows; i++) |
| 385 |
if (!rmx_load_row(rmx_lval(rm,i,0), rm, fp)) |
| 386 |
return(0); |
| 387 |
return(1); |
| 388 |
} |
| 389 |
|
| 390 |
/* Load matrix from supported file type */ |
| 391 |
RMATRIX * |
| 392 |
rmx_load(const char *inspec, RMPref rmp) |
| 393 |
{ |
| 394 |
FILE *fp; |
| 395 |
RMATRIX *dnew; |
| 396 |
int ok; |
| 397 |
|
| 398 |
if (!inspec) |
| 399 |
inspec = stdin_name; |
| 400 |
else if (!*inspec) |
| 401 |
return(NULL); |
| 402 |
if (inspec == stdin_name) /* reading from stdin? */ |
| 403 |
fp = stdin; |
| 404 |
else if (inspec[0] == '!') |
| 405 |
fp = popen(inspec+1, "r"); |
| 406 |
else { /* check suffix */ |
| 407 |
const char *sp = strrchr(inspec, '.'); |
| 408 |
if (sp > inspec && !strcasecmp(sp+1, "XML")) { /* BSDF? */ |
| 409 |
CMATRIX *cm = rmp==RMPnone ? (CMATRIX *)NULL : |
| 410 |
rmp==RMPtrans ? cm_loadBTDF(inspec) : |
| 411 |
cm_loadBRDF(inspec, rmp==RMPreflB) ; |
| 412 |
if (!cm) |
| 413 |
return(NULL); |
| 414 |
dnew = rmx_from_cmatrix(cm); |
| 415 |
cm_free(cm); |
| 416 |
dnew->dtype = DTascii; |
| 417 |
return(dnew); /* return here */ |
| 418 |
} /* else open it ourselves */ |
| 419 |
fp = fopen(inspec, "r"); |
| 420 |
} |
| 421 |
if (!fp) { |
| 422 |
fprintf(stderr, "Cannot open for reading: %s\n", inspec); |
| 423 |
return(NULL); |
| 424 |
} |
| 425 |
#ifdef getc_unlocked |
| 426 |
flockfile(fp); |
| 427 |
#endif |
| 428 |
SET_FILE_BINARY(fp); /* load header info */ |
| 429 |
if (!rmx_load_header(dnew = rmx_new(0,0,3), fp)) { |
| 430 |
fprintf(stderr, "Bad header in: %s\n", inspec); |
| 431 |
if (inspec[0] == '!') pclose(fp); |
| 432 |
else fclose(fp); |
| 433 |
rmx_free(dnew); |
| 434 |
return(NULL); |
| 435 |
} |
| 436 |
ok = rmx_load_data(dnew, fp); /* allocate & load data */ |
| 437 |
|
| 438 |
if (fp != stdin) { /* close input stream */ |
| 439 |
if (inspec[0] == '!') |
| 440 |
pclose(fp); |
| 441 |
else |
| 442 |
fclose(fp); |
| 443 |
} |
| 444 |
#ifdef getc_unlocked |
| 445 |
else |
| 446 |
funlockfile(fp); |
| 447 |
#endif |
| 448 |
if (!ok) { /* load failure? */ |
| 449 |
fprintf(stderr, "Error loading data from: %s\n", inspec); |
| 450 |
rmx_free(dnew); |
| 451 |
return(NULL); |
| 452 |
} |
| 453 |
/* undo exposure? */ |
| 454 |
if ((dnew->cexp[0] != 1.f) | |
| 455 |
(dnew->cexp[1] != 1.f) | (dnew->cexp[2] != 1.f)) { |
| 456 |
double cmlt[MAXCOMP]; |
| 457 |
int i; |
| 458 |
if (dnew->ncomp > MAXCOMP) { |
| 459 |
fprintf(stderr, "Excess spectral components in: %s\n", |
| 460 |
inspec); |
| 461 |
rmx_free(dnew); |
| 462 |
return(NULL); |
| 463 |
} |
| 464 |
cmlt[0] = 1./dnew->cexp[0]; |
| 465 |
cmlt[1] = 1./dnew->cexp[1]; |
| 466 |
cmlt[2] = 1./dnew->cexp[2]; |
| 467 |
for (i = dnew->ncomp; i-- > 3; ) |
| 468 |
cmlt[i] = cmlt[1]; /* XXX hack! */ |
| 469 |
rmx_scale(dnew, cmlt); |
| 470 |
setcolor(dnew->cexp, 1.f, 1.f, 1.f); |
| 471 |
} |
| 472 |
return(dnew); |
| 473 |
} |
| 474 |
|
| 475 |
#if DTrmx_native==DTdouble |
| 476 |
static int |
| 477 |
rmx_write_float(const rmx_dtype *dp, int len, FILE *fp) |
| 478 |
{ |
| 479 |
float val; |
| 480 |
|
| 481 |
while (len--) { |
| 482 |
val = (float)*dp++; |
| 483 |
if (putbinary(&val, sizeof(val), 1, fp) != 1) |
| 484 |
return(0); |
| 485 |
} |
| 486 |
return(1); |
| 487 |
} |
| 488 |
#else |
| 489 |
static int |
| 490 |
rmx_write_double(const rmx_dtype *dp, int len, FILE *fp) |
| 491 |
{ |
| 492 |
double val; |
| 493 |
|
| 494 |
while (len--) { |
| 495 |
val = *dp++; |
| 496 |
if (putbinary(&val, sizeof(val), 1, fp) != 1) |
| 497 |
return(0); |
| 498 |
} |
| 499 |
return(1); |
| 500 |
} |
| 501 |
#endif |
| 502 |
|
| 503 |
static int |
| 504 |
rmx_write_ascii(const rmx_dtype *dp, int nc, int len, FILE *fp) |
| 505 |
{ |
| 506 |
while (len-- > 0) { |
| 507 |
int k = nc; |
| 508 |
while (k-- > 0) |
| 509 |
fprintf(fp, " %.7e", *dp++); |
| 510 |
fputc('\t', fp); |
| 511 |
} |
| 512 |
return(fputc('\n', fp) != EOF); |
| 513 |
} |
| 514 |
|
| 515 |
static int |
| 516 |
rmx_write_rgbe(const rmx_dtype *dp, int nc, int len, FILE *fp) |
| 517 |
{ |
| 518 |
COLR *scan; |
| 519 |
int j; |
| 520 |
|
| 521 |
if ((nc != 1) & (nc != 3)) return(0); |
| 522 |
scan = (COLR *)tempbuffer(sizeof(COLR)*len); |
| 523 |
if (!scan) return(0); |
| 524 |
|
| 525 |
for (j = 0; j < len; j++, dp += nc) |
| 526 |
if (nc == 1) |
| 527 |
setcolr(scan[j], dp[0], dp[0], dp[0]); |
| 528 |
else |
| 529 |
setcolr(scan[j], dp[0], dp[1], dp[2]); |
| 530 |
|
| 531 |
return(fwritecolrs(scan, len, fp) >= 0); |
| 532 |
} |
| 533 |
|
| 534 |
static int |
| 535 |
rmx_write_spec(const rmx_dtype *dp, int nc, int len, FILE *fp) |
| 536 |
{ |
| 537 |
COLRV *scan; |
| 538 |
COLORV scol[MAXCOMP]; |
| 539 |
int j, k; |
| 540 |
|
| 541 |
if ((nc < 3) | (nc > MAXCOMP)) return(0); |
| 542 |
scan = (COLRV *)tempbuffer((nc+1)*len); |
| 543 |
if (!scan) return(0); |
| 544 |
for (j = 0; j < len; j++, dp += nc) { |
| 545 |
for (k = nc; k--; ) |
| 546 |
scol[k] = dp[k]; |
| 547 |
scolor2scolr(scan+j*(nc+1), scol, nc); |
| 548 |
} |
| 549 |
return(fwritescolrs(scan, nc, len, fp) >= 0); |
| 550 |
} |
| 551 |
|
| 552 |
/* Check if CIE XYZ primaries were specified */ |
| 553 |
static int |
| 554 |
findCIEprims(const char *info) |
| 555 |
{ |
| 556 |
RGBPRIMS prims; |
| 557 |
|
| 558 |
if (!info) |
| 559 |
return(0); |
| 560 |
info = strstr(info, PRIMARYSTR); |
| 561 |
if (!info || !primsval(prims, info)) |
| 562 |
return(0); |
| 563 |
|
| 564 |
return((prims[RED][CIEX] > .99) & (prims[RED][CIEY] < .01) && |
| 565 |
(prims[GRN][CIEX] < .01) & (prims[GRN][CIEY] > .99) && |
| 566 |
(prims[BLU][CIEX] < .01) & (prims[BLU][CIEY] < .01)); |
| 567 |
} |
| 568 |
|
| 569 |
/* Finish writing header data with resolution and format, returning type used */ |
| 570 |
int |
| 571 |
rmx_write_header(const RMATRIX *rm, int dtype, FILE *fp) |
| 572 |
{ |
| 573 |
if (!rm | !fp || rm->ncols <= 0) |
| 574 |
return(0); |
| 575 |
if (rm->info) |
| 576 |
fputs(rm->info, fp); |
| 577 |
if (dtype == DTfromHeader) { |
| 578 |
dtype = rm->dtype; |
| 579 |
#if DTrmx_native==DTfloat |
| 580 |
if (dtype == DTdouble) /* but stored as float? */ |
| 581 |
dtype = DTfloat; |
| 582 |
#endif |
| 583 |
} else if (dtype == DTrgbe && (rm->dtype == DTxyze || |
| 584 |
findCIEprims(rm->info))) |
| 585 |
dtype = DTxyze; |
| 586 |
else if ((dtype == DTxyze) & (rm->dtype == DTrgbe)) |
| 587 |
dtype = DTrgbe; |
| 588 |
if ((dtype < DTspec) & (rm->ncomp > 3)) |
| 589 |
dtype = DTspec; |
| 590 |
else if ((dtype == DTspec) & (rm->ncomp <= 3)) |
| 591 |
return(0); |
| 592 |
|
| 593 |
if (dtype == DTascii) /* set file type (WINDOWS) */ |
| 594 |
SET_FILE_TEXT(fp); |
| 595 |
else |
| 596 |
SET_FILE_BINARY(fp); |
| 597 |
/* write exposure? */ |
| 598 |
if (rm->ncomp == 3 && (rm->cexp[RED] != rm->cexp[GRN]) | |
| 599 |
(rm->cexp[GRN] != rm->cexp[BLU])) |
| 600 |
fputcolcor(rm->cexp, fp); |
| 601 |
else if (rm->cexp[GRN] != 1.f) |
| 602 |
fputexpos(rm->cexp[GRN], fp); |
| 603 |
/* matrix size? */ |
| 604 |
if ((dtype > DTspec) | (rm->nrows <= 0)) { |
| 605 |
if (rm->nrows > 0) |
| 606 |
fprintf(fp, "NROWS=%d\n", rm->nrows); |
| 607 |
fprintf(fp, "NCOLS=%d\n", rm->ncols); |
| 608 |
} |
| 609 |
if (dtype >= DTspec) { /* # components & split? */ |
| 610 |
fputncomp(rm->ncomp, fp); |
| 611 |
if (rm->ncomp > 3 && |
| 612 |
memcmp(rm->wlpart, WLPART, sizeof(WLPART))) |
| 613 |
fputwlsplit(rm->wlpart, fp); |
| 614 |
} else if ((rm->ncomp != 3) & (rm->ncomp != 1)) |
| 615 |
return(0); /* wrong # components */ |
| 616 |
if ((dtype == DTfloat) | (dtype == DTdouble)) |
| 617 |
fputendian(fp); /* important to record */ |
| 618 |
fputformat(cm_fmt_id[dtype], fp); |
| 619 |
fputc('\n', fp); /* end of header */ |
| 620 |
if ((dtype <= DTspec) & (rm->nrows > 0)) |
| 621 |
fprtresolu(rm->ncols, rm->nrows, fp); |
| 622 |
return(dtype); |
| 623 |
} |
| 624 |
|
| 625 |
/* Write out matrix data (usually by row) */ |
| 626 |
int |
| 627 |
rmx_write_data(const rmx_dtype *dp, int nc, int len, int dtype, FILE *fp) |
| 628 |
{ |
| 629 |
switch (dtype) { |
| 630 |
#if DTrmx_native==DTdouble |
| 631 |
case DTfloat: |
| 632 |
return(rmx_write_float(dp, nc*len, fp)); |
| 633 |
#else |
| 634 |
case DTdouble: |
| 635 |
return(rmx_write_double(dp, nc*len, fp)); |
| 636 |
#endif |
| 637 |
case DTrmx_native: |
| 638 |
return(putbinary(dp, sizeof(*dp)*nc, len, fp) == len); |
| 639 |
case DTascii: |
| 640 |
return(rmx_write_ascii(dp, nc, len, fp)); |
| 641 |
case DTrgbe: |
| 642 |
case DTxyze: |
| 643 |
return(rmx_write_rgbe(dp, nc, len, fp)); |
| 644 |
case DTspec: |
| 645 |
return(rmx_write_spec(dp, nc, len, fp)); |
| 646 |
} |
| 647 |
return(0); |
| 648 |
} |
| 649 |
|
| 650 |
/* Write matrix using file format indicated by dtype */ |
| 651 |
int |
| 652 |
rmx_write(const RMATRIX *rm, int dtype, FILE *fp) |
| 653 |
{ |
| 654 |
int ok = 0; |
| 655 |
int i; |
| 656 |
/* complete header */ |
| 657 |
dtype = rmx_write_header(rm, dtype, fp); |
| 658 |
if (dtype <= 0) |
| 659 |
return(0); |
| 660 |
#ifdef getc_unlocked |
| 661 |
flockfile(fp); |
| 662 |
#endif |
| 663 |
if (dtype == DTrmx_native) /* write all at once? */ |
| 664 |
ok = rmx_write_data(rm->mtx, rm->ncomp, |
| 665 |
rm->nrows*rm->ncols, dtype, fp); |
| 666 |
else /* else row by row */ |
| 667 |
for (i = 0; i < rm->nrows; i++) { |
| 668 |
ok = rmx_write_data(rmx_val(rm,i,0), rm->ncomp, |
| 669 |
rm->ncols, dtype, fp); |
| 670 |
if (!ok) break; |
| 671 |
} |
| 672 |
|
| 673 |
if (ok) ok = (fflush(fp) == 0); |
| 674 |
#ifdef getc_unlocked |
| 675 |
funlockfile(fp); |
| 676 |
#endif |
| 677 |
if (!ok) fputs("Error writing matrix\n", stderr); |
| 678 |
return(ok); |
| 679 |
} |
| 680 |
|
| 681 |
/* Allocate and assign square identity matrix with n components */ |
| 682 |
RMATRIX * |
| 683 |
rmx_identity(const int dim, const int n) |
| 684 |
{ |
| 685 |
RMATRIX *rid = rmx_alloc(dim, dim, n); |
| 686 |
int i, k; |
| 687 |
|
| 688 |
if (!rid) |
| 689 |
return(NULL); |
| 690 |
memset(rid->mtx, 0, rmx_array_size(rid)); |
| 691 |
for (i = dim; i--; ) { |
| 692 |
rmx_dtype *dp = rmx_lval(rid,i,i); |
| 693 |
for (k = n; k--; ) |
| 694 |
dp[k] = 1.; |
| 695 |
} |
| 696 |
return(rid); |
| 697 |
} |
| 698 |
|
| 699 |
/* Duplicate the given matrix (may be unallocated) */ |
| 700 |
RMATRIX * |
| 701 |
rmx_copy(const RMATRIX *rm) |
| 702 |
{ |
| 703 |
RMATRIX *dnew; |
| 704 |
|
| 705 |
if (!rm) |
| 706 |
return(NULL); |
| 707 |
dnew = rmx_new(rm->nrows, rm->ncols, rm->ncomp); |
| 708 |
if (!dnew) |
| 709 |
return(NULL); |
| 710 |
if (rm->mtx) { |
| 711 |
if (!rmx_prepare(dnew)) { |
| 712 |
rmx_free(dnew); |
| 713 |
return(NULL); |
| 714 |
} |
| 715 |
memcpy(dnew->mtx, rm->mtx, rmx_array_size(dnew)); |
| 716 |
} |
| 717 |
rmx_addinfo(dnew, rm->info); |
| 718 |
dnew->dtype = rm->dtype; |
| 719 |
copycolor(dnew->cexp, rm->cexp); |
| 720 |
memcpy(dnew->wlpart, rm->wlpart, sizeof(dnew->wlpart)); |
| 721 |
return(dnew); |
| 722 |
} |
| 723 |
|
| 724 |
/* Replace data in first matrix with data from second */ |
| 725 |
int |
| 726 |
rmx_transfer_data(RMATRIX *rdst, RMATRIX *rsrc, int dometa) |
| 727 |
{ |
| 728 |
if (!rdst | !rsrc) |
| 729 |
return(0); |
| 730 |
if (dometa) { /* transfer everything? */ |
| 731 |
rmx_reset(rdst); |
| 732 |
*rdst = *rsrc; |
| 733 |
rsrc->info = NULL; rsrc->mapped = NULL; rsrc->mtx = NULL; |
| 734 |
return(1); |
| 735 |
} |
| 736 |
/* just matrix data -- leave metadata */ |
| 737 |
if ((rdst->nrows != rsrc->nrows) | |
| 738 |
(rdst->ncols != rsrc->ncols) | |
| 739 |
(rdst->ncomp != rsrc->ncomp)) |
| 740 |
return(0); |
| 741 |
#ifdef MAP_FILE |
| 742 |
if (rdst->mapped) |
| 743 |
munmap(rdst->mapped, rmx_mapped_size(rdst)); |
| 744 |
else |
| 745 |
#endif |
| 746 |
if (rdst->pflags & RMF_FREEMEM) { |
| 747 |
free(rdst->mtx); |
| 748 |
rdst->pflags &= ~RMF_FREEMEM; |
| 749 |
} |
| 750 |
rdst->mapped = rsrc->mapped; |
| 751 |
rdst->mtx = rsrc->mtx; |
| 752 |
rdst->pflags |= rsrc->pflags & RMF_FREEMEM; |
| 753 |
rsrc->mapped = NULL; rsrc->mtx = NULL; |
| 754 |
return(1); |
| 755 |
} |
| 756 |
|
| 757 |
/* Transpose the given matrix */ |
| 758 |
int |
| 759 |
rmx_transpose(RMATRIX *rm) |
| 760 |
{ |
| 761 |
RMATRIX dnew; |
| 762 |
int i, j; |
| 763 |
|
| 764 |
if (!rm || !rm->mtx | (rm->ncomp > MAXCOMP)) |
| 765 |
return(0); |
| 766 |
if (rm->info) |
| 767 |
rmx_addinfo(rm, "Transposed rows and columns\n"); |
| 768 |
if ((rm->nrows == 1) | (rm->ncols == 1)) { /* vector? */ |
| 769 |
j = rm->ncols; |
| 770 |
rm->ncols = rm->nrows; |
| 771 |
rm->nrows = j; |
| 772 |
return(1); |
| 773 |
} |
| 774 |
if (rm->nrows == rm->ncols) { /* square matrix case */ |
| 775 |
rmx_dtype val[MAXCOMP]; |
| 776 |
for (j = rm->ncols; j--; ) |
| 777 |
for (i = rm->nrows; i--; ) { |
| 778 |
if (i == j) continue; |
| 779 |
memcpy(val, rmx_val(rm,i,j), |
| 780 |
sizeof(rmx_dtype)*rm->ncomp); |
| 781 |
memcpy(rmx_lval(rm,i,j), rmx_val(rm,j,i), |
| 782 |
sizeof(rmx_dtype)*rm->ncomp); |
| 783 |
memcpy(rmx_val(rm,j,i), val, |
| 784 |
sizeof(rmx_dtype)*rm->ncomp); |
| 785 |
} |
| 786 |
return(1); |
| 787 |
} |
| 788 |
memset(&dnew, 0, sizeof(dnew)); |
| 789 |
dnew.ncols = rm->nrows; dnew.nrows = rm->ncols; |
| 790 |
dnew.ncomp = rm->ncomp; |
| 791 |
if (!rmx_prepare(&dnew)) |
| 792 |
return(0); |
| 793 |
rmx_addinfo(&dnew, rm->info); |
| 794 |
dnew.dtype = rm->dtype; |
| 795 |
copycolor(dnew.cexp, rm->cexp); |
| 796 |
memcpy(dnew.wlpart, rm->wlpart, sizeof(dnew.wlpart)); |
| 797 |
for (j = dnew.ncols; j--; ) |
| 798 |
for (i = dnew.nrows; i--; ) |
| 799 |
memcpy(rmx_lval(&dnew,i,j), rmx_val(rm,j,i), |
| 800 |
sizeof(rmx_dtype)*dnew.ncomp); |
| 801 |
/* and reassign result */ |
| 802 |
return(rmx_transfer_data(rm, &dnew, 1)); |
| 803 |
} |
| 804 |
|
| 805 |
/* Multiply (concatenate) two matrices and allocate the result */ |
| 806 |
RMATRIX * |
| 807 |
rmx_multiply(const RMATRIX *m1, const RMATRIX *m2) |
| 808 |
{ |
| 809 |
RMATRIX *mres; |
| 810 |
int i, j, k, h; |
| 811 |
|
| 812 |
if (!m1 | !m2 || !m1->mtx | !m2->mtx | |
| 813 |
(m1->ncomp != m2->ncomp) | (m1->ncols != m2->nrows)) |
| 814 |
return(NULL); |
| 815 |
mres = rmx_alloc(m1->nrows, m2->ncols, m1->ncomp); |
| 816 |
if (!mres) |
| 817 |
return(NULL); |
| 818 |
i = rmx_newtype(m1->dtype, m2->dtype); |
| 819 |
if (i) |
| 820 |
mres->dtype = i; |
| 821 |
else |
| 822 |
rmx_addinfo(mres, rmx_mismatch_warn); |
| 823 |
for (i = mres->nrows; i--; ) |
| 824 |
for (j = mres->ncols; j--; ) |
| 825 |
for (k = mres->ncomp; k--; ) { |
| 826 |
double d = 0; |
| 827 |
for (h = m1->ncols; h--; ) |
| 828 |
d += (double)rmx_val(m1,i,h)[k] * |
| 829 |
rmx_val(m2,h,j)[k]; |
| 830 |
rmx_lval(mres,i,j)[k] = (rmx_dtype)d; |
| 831 |
} |
| 832 |
return(mres); |
| 833 |
} |
| 834 |
|
| 835 |
/* Element-wise multiplication (or division) of m2 into m1 */ |
| 836 |
int |
| 837 |
rmx_elemult(RMATRIX *m1, const RMATRIX *m2, int divide) |
| 838 |
{ |
| 839 |
int zeroDivides = 0; |
| 840 |
int i, j, k; |
| 841 |
|
| 842 |
if (!m1 | !m2 || !m1->mtx | !m2->mtx | |
| 843 |
(m1->ncols != m2->ncols) | (m1->nrows != m2->nrows)) |
| 844 |
return(0); |
| 845 |
if ((m2->ncomp > 1) & (m2->ncomp != m1->ncomp)) |
| 846 |
return(0); |
| 847 |
i = rmx_newtype(m1->dtype, m2->dtype); |
| 848 |
if (i) |
| 849 |
m1->dtype = i; |
| 850 |
else |
| 851 |
rmx_addinfo(m1, rmx_mismatch_warn); |
| 852 |
for (i = m1->nrows; i--; ) |
| 853 |
for (j = m1->ncols; j--; ) |
| 854 |
if (divide) { |
| 855 |
rmx_dtype d; |
| 856 |
if (m2->ncomp == 1) { |
| 857 |
d = rmx_val(m2,i,j)[0]; |
| 858 |
if (d == 0) { |
| 859 |
++zeroDivides; |
| 860 |
for (k = m1->ncomp; k--; ) |
| 861 |
rmx_lval(m1,i,j)[k] = 0; |
| 862 |
} else { |
| 863 |
d = 1./d; |
| 864 |
for (k = m1->ncomp; k--; ) |
| 865 |
rmx_lval(m1,i,j)[k] *= d; |
| 866 |
} |
| 867 |
} else |
| 868 |
for (k = m1->ncomp; k--; ) { |
| 869 |
d = rmx_val(m2,i,j)[k]; |
| 870 |
if (d == 0) { |
| 871 |
++zeroDivides; |
| 872 |
rmx_lval(m1,i,j)[k] = 0; |
| 873 |
} else |
| 874 |
rmx_lval(m1,i,j)[k] /= d; |
| 875 |
} |
| 876 |
} else { |
| 877 |
if (m2->ncomp == 1) { |
| 878 |
const rmx_dtype d = rmx_val(m2,i,j)[0]; |
| 879 |
for (k = m1->ncomp; k--; ) |
| 880 |
rmx_lval(m1,i,j)[k] *= d; |
| 881 |
} else |
| 882 |
for (k = m1->ncomp; k--; ) |
| 883 |
rmx_lval(m1,i,j)[k] *= rmx_val(m2,i,j)[k]; |
| 884 |
} |
| 885 |
if (zeroDivides) { |
| 886 |
rmx_addinfo(m1, "WARNING: zero divide(s) corrupted results\n"); |
| 887 |
errno = ERANGE; |
| 888 |
} |
| 889 |
return(1); |
| 890 |
} |
| 891 |
|
| 892 |
/* Sum second matrix into first, applying scale factor beforehand */ |
| 893 |
int |
| 894 |
rmx_sum(RMATRIX *msum, const RMATRIX *madd, const double sf[]) |
| 895 |
{ |
| 896 |
double *mysf = NULL; |
| 897 |
int i, j, k; |
| 898 |
|
| 899 |
if (!msum | !madd || !msum->mtx | !madd->mtx | |
| 900 |
(msum->nrows != madd->nrows) | |
| 901 |
(msum->ncols != madd->ncols) | |
| 902 |
(msum->ncomp != madd->ncomp)) |
| 903 |
return(0); |
| 904 |
if (!sf) { |
| 905 |
mysf = (double *)malloc(sizeof(double)*msum->ncomp); |
| 906 |
if (!mysf) |
| 907 |
return(0); |
| 908 |
for (k = msum->ncomp; k--; ) |
| 909 |
mysf[k] = 1; |
| 910 |
sf = mysf; |
| 911 |
} |
| 912 |
i = rmx_newtype(msum->dtype, madd->dtype); |
| 913 |
if (i) |
| 914 |
msum->dtype = i; |
| 915 |
else |
| 916 |
rmx_addinfo(msum, rmx_mismatch_warn); |
| 917 |
for (i = msum->nrows; i--; ) |
| 918 |
for (j = msum->ncols; j--; ) { |
| 919 |
const rmx_dtype *da = rmx_val(madd,i,j); |
| 920 |
rmx_dtype *ds = rmx_lval(msum,i,j); |
| 921 |
for (k = msum->ncomp; k--; ) |
| 922 |
ds[k] += (rmx_dtype)sf[k] * da[k]; |
| 923 |
} |
| 924 |
if (mysf) |
| 925 |
free(mysf); |
| 926 |
return(1); |
| 927 |
} |
| 928 |
|
| 929 |
/* Scale the given matrix by the indicated scalar component vector */ |
| 930 |
int |
| 931 |
rmx_scale(RMATRIX *rm, const double sf[]) |
| 932 |
{ |
| 933 |
int i, j, k; |
| 934 |
|
| 935 |
if (!rm | !sf || !rm->mtx) |
| 936 |
return(0); |
| 937 |
for (i = rm->nrows; i--; ) |
| 938 |
for (j = rm->ncols; j--; ) { |
| 939 |
rmx_dtype *dp = rmx_lval(rm,i,j); |
| 940 |
for (k = rm->ncomp; k--; ) |
| 941 |
dp[k] *= (rmx_dtype)sf[k]; |
| 942 |
} |
| 943 |
if (rm->info) |
| 944 |
rmx_addinfo(rm, "Applied scalar\n"); |
| 945 |
/* XXX: should record as exposure for COLR and SCOLR types? */ |
| 946 |
return(1); |
| 947 |
} |
| 948 |
|
| 949 |
/* Allocate new matrix and apply component transformation */ |
| 950 |
RMATRIX * |
| 951 |
rmx_transform(const RMATRIX *msrc, int n, const double cmat[]) |
| 952 |
{ |
| 953 |
int i, j, ks, kd; |
| 954 |
RMATRIX *dnew; |
| 955 |
|
| 956 |
if (!msrc | (n <= 0) | !cmat || !msrc->mtx) |
| 957 |
return(NULL); |
| 958 |
dnew = rmx_alloc(msrc->nrows, msrc->ncols, n); |
| 959 |
if (!dnew) |
| 960 |
return(NULL); |
| 961 |
if (msrc->info) { |
| 962 |
char buf[128]; |
| 963 |
sprintf(buf, "Applied %dx%d component transform\n", |
| 964 |
dnew->ncomp, msrc->ncomp); |
| 965 |
rmx_addinfo(dnew, msrc->info); |
| 966 |
rmx_addinfo(dnew, buf); |
| 967 |
} |
| 968 |
dnew->dtype = msrc->dtype; |
| 969 |
for (i = dnew->nrows; i--; ) |
| 970 |
for (j = dnew->ncols; j--; ) { |
| 971 |
const rmx_dtype *ds = rmx_val(msrc,i,j); |
| 972 |
for (kd = dnew->ncomp; kd--; ) { |
| 973 |
double d = 0; |
| 974 |
for (ks = msrc->ncomp; ks--; ) |
| 975 |
d += cmat[kd*msrc->ncomp + ks] * ds[ks]; |
| 976 |
rmx_lval(dnew,i,j)[kd] = (rmx_dtype)d; |
| 977 |
} |
| 978 |
} |
| 979 |
return(dnew); |
| 980 |
} |
| 981 |
|
| 982 |
/* Convert a color matrix to newly allocated RMATRIX buffer */ |
| 983 |
RMATRIX * |
| 984 |
rmx_from_cmatrix(const CMATRIX *cm) |
| 985 |
{ |
| 986 |
RMATRIX *dnew; |
| 987 |
|
| 988 |
if (!cm) |
| 989 |
return(NULL); |
| 990 |
dnew = rmx_alloc(cm->nrows, cm->ncols, 3); |
| 991 |
if (!dnew) |
| 992 |
return(NULL); |
| 993 |
|
| 994 |
dnew->dtype = sizeof(COLORV)==sizeof(float) ? |
| 995 |
DTfloat : DTdouble; |
| 996 |
|
| 997 |
if (sizeof(COLORV) == sizeof(rmx_dtype)) { |
| 998 |
memcpy(dnew->mtx, cm->cmem, rmx_array_size(dnew)); |
| 999 |
} else { |
| 1000 |
int i, j; |
| 1001 |
for (i = dnew->nrows; i--; ) |
| 1002 |
for (j = dnew->ncols; j--; ) { |
| 1003 |
const COLORV *cv = cm_lval(cm,i,j); |
| 1004 |
rmx_dtype *dp = rmx_lval(dnew,i,j); |
| 1005 |
dp[0] = cv[0]; |
| 1006 |
dp[1] = cv[1]; |
| 1007 |
dp[2] = cv[2]; |
| 1008 |
} |
| 1009 |
} |
| 1010 |
return(dnew); |
| 1011 |
} |
| 1012 |
|
| 1013 |
/* Convert general matrix to newly allocated CMATRIX buffer */ |
| 1014 |
CMATRIX * |
| 1015 |
cm_from_rmatrix(const RMATRIX *rm) |
| 1016 |
{ |
| 1017 |
CMATRIX *cnew; |
| 1018 |
|
| 1019 |
if (!rm || !rm->mtx | (rm->ncomp == 2) | (rm->ncomp > MAXCOMP)) |
| 1020 |
return(NULL); |
| 1021 |
cnew = cm_alloc(rm->nrows, rm->ncols); |
| 1022 |
if (!cnew) |
| 1023 |
return(NULL); |
| 1024 |
if ((sizeof(COLORV) == sizeof(rmx_dtype)) & (rm->ncomp == 3)) { |
| 1025 |
memcpy(cnew->cmem, rm->mtx, rmx_array_size(rm)); |
| 1026 |
} else { |
| 1027 |
int i, j; |
| 1028 |
for (i = cnew->nrows; i--; ) |
| 1029 |
for (j = cnew->ncols; j--; ) { |
| 1030 |
const rmx_dtype *dp = rmx_val(rm,i,j); |
| 1031 |
COLORV *cv = cm_lval(cnew,i,j); |
| 1032 |
switch (rm->ncomp) { |
| 1033 |
case 3: |
| 1034 |
setcolor(cv, dp[0], dp[1], dp[2]); |
| 1035 |
break; |
| 1036 |
case 1: |
| 1037 |
setcolor(cv, dp[0], dp[0], dp[0]); |
| 1038 |
break; |
| 1039 |
default: { |
| 1040 |
COLORV scol[MAXCOMP]; |
| 1041 |
int k; |
| 1042 |
for (k = rm->ncomp; k--; ) |
| 1043 |
scol[k] = dp[k]; |
| 1044 |
scolor2color(cv, scol, rm->ncomp, rm->wlpart); |
| 1045 |
} break; |
| 1046 |
} |
| 1047 |
} |
| 1048 |
} |
| 1049 |
return(cnew); |
| 1050 |
} |
