| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rmtxop.c,v 2.40 2025/04/04 22:47:56 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* General component matrix operations. |
| 6 |
*/ |
| 7 |
|
| 8 |
#include <errno.h> |
| 9 |
#include "rtio.h" |
| 10 |
#include "rmatrix.h" |
| 11 |
#include "platform.h" |
| 12 |
|
| 13 |
/* Preferred BSDF component: |
| 14 |
none, transmission, reflection front (normal side), reflection back */ |
| 15 |
typedef enum {RMPnone=-1, RMPtrans=0, RMPreflF, RMPreflB} RMPref; |
| 16 |
|
| 17 |
/* Unary matrix operation(s) */ |
| 18 |
typedef struct { |
| 19 |
double cmat[MAXCOMP*MAXCOMP]; /* component transformation */ |
| 20 |
double sca[MAXCOMP]; /* scalar coefficients */ |
| 21 |
const char *csym; /* symbolic coefs or file */ |
| 22 |
short clen; /* number of coefficients */ |
| 23 |
short nsf; /* number of scalars */ |
| 24 |
short transpose; /* do transpose? */ |
| 25 |
} RUNARYOP; |
| 26 |
|
| 27 |
/* Matrix input source and requested operation(s) */ |
| 28 |
typedef struct { |
| 29 |
const char *inspec; /* input specification */ |
| 30 |
RMPref rmp; /* matrix preference */ |
| 31 |
RUNARYOP preop; /* unary operation(s) */ |
| 32 |
RMATRIX *mtx; /* original matrix if loaded */ |
| 33 |
int binop; /* binary op with next (or 0) */ |
| 34 |
} ROPMAT; |
| 35 |
|
| 36 |
int verbose = 0; /* verbose reporting? */ |
| 37 |
|
| 38 |
/* Load matrix */ |
| 39 |
int |
| 40 |
loadmatrix(ROPMAT *rop) |
| 41 |
{ |
| 42 |
if (rop->mtx) /* already loaded? */ |
| 43 |
return(0); |
| 44 |
/* check for BSDF input */ |
| 45 |
if ((rop->inspec[0] != '!') & (rop->rmp != RMPnone)) { |
| 46 |
const char *sp = strrchr(rop->inspec, '.'); |
| 47 |
if (sp > rop->inspec && !strcasecmp(sp+1, "XML")) { |
| 48 |
CMATRIX *cm = rop->rmp==RMPtrans ? cm_loadBTDF(rop->inspec) : |
| 49 |
cm_loadBRDF(rop->inspec, rop->rmp==RMPreflB) ; |
| 50 |
if (!cm) |
| 51 |
return(-1); |
| 52 |
rop->mtx = rmx_from_cmatrix(cm); |
| 53 |
cm_free(cm); |
| 54 |
rop->mtx->dtype = DTascii; |
| 55 |
return(1); /* loaded BSDF XML file */ |
| 56 |
} |
| 57 |
} /* else load regular matrix */ |
| 58 |
rop->mtx = rmx_load(rop->inspec); |
| 59 |
|
| 60 |
return(rop->mtx ? 1 : -1); |
| 61 |
} |
| 62 |
|
| 63 |
extern int checksymbolic(ROPMAT *rop); |
| 64 |
|
| 65 |
/* Check/set transform based on a reference input file */ |
| 66 |
int |
| 67 |
checkreffile(ROPMAT *rop) |
| 68 |
{ |
| 69 |
static const char *curRF = NULL; |
| 70 |
static RMATRIX refm; |
| 71 |
const int nc = rop->mtx->ncomp; |
| 72 |
int i; |
| 73 |
|
| 74 |
if (!curRF || strcmp(rop->preop.csym, curRF)) { |
| 75 |
FILE *fp = fopen(rop->preop.csym, "rb"); |
| 76 |
if (!rmx_load_header(&refm, fp)) { |
| 77 |
fprintf(stderr, "%s: cannot read info header\n", |
| 78 |
rop->preop.csym); |
| 79 |
curRF = NULL; |
| 80 |
if (fp) fclose(fp); |
| 81 |
return(-1); |
| 82 |
} |
| 83 |
fclose(fp); |
| 84 |
curRF = rop->preop.csym; |
| 85 |
} |
| 86 |
if (refm.ncomp == 3) { |
| 87 |
rop->preop.csym = (refm.dtype == DTxyze) ? "XYZ" : "RGB"; |
| 88 |
return(checksymbolic(rop)); |
| 89 |
} |
| 90 |
if (refm.ncomp == 2) { |
| 91 |
fprintf(stderr, "%s: cannot convert to 2 components\n", |
| 92 |
curRF); |
| 93 |
return(-1); |
| 94 |
} |
| 95 |
if (refm.ncomp == 1) { |
| 96 |
rop->preop.csym = "Y"; /* XXX big assumption */ |
| 97 |
return(checksymbolic(rop)); |
| 98 |
} |
| 99 |
if (refm.ncomp == nc && |
| 100 |
!memcmp(refm.wlpart, rop->mtx->wlpart, sizeof(refm.wlpart))) |
| 101 |
return(0); /* nothing to do */ |
| 102 |
|
| 103 |
if ((nc <= 3) | (nc > MAXCSAMP) | (refm.ncomp > MAXCSAMP)) { |
| 104 |
fprintf(stderr, "%s: cannot resample from %d to %d components\n", |
| 105 |
curRF, nc, refm.ncomp); |
| 106 |
return(-1); |
| 107 |
} |
| 108 |
rop->preop.clen = refm.ncomp * nc; /* compute spec to ref */ |
| 109 |
|
| 110 |
for (i = 0; i < nc; i++) { |
| 111 |
SCOLOR scstim, scresp; |
| 112 |
int j; |
| 113 |
memset(scstim, 0, sizeof(COLORV)*nc); |
| 114 |
scstim[i] = 1.f; |
| 115 |
convertscolor(scresp, refm.ncomp, refm.wlpart[0], refm.wlpart[3], |
| 116 |
scstim, nc, rop->mtx->wlpart[0], rop->mtx->wlpart[3]); |
| 117 |
for (j = refm.ncomp; j-- > 0; ) |
| 118 |
rop->preop.cmat[j*nc + i] = scresp[j]; |
| 119 |
} |
| 120 |
memcpy(rop->mtx->wlpart, refm.wlpart, sizeof(rop->mtx->wlpart)); |
| 121 |
return(0); |
| 122 |
} |
| 123 |
|
| 124 |
/* Compute conversion row from spectrum to one channel of RGB */ |
| 125 |
void |
| 126 |
rgbrow(ROPMAT *rop, int r, int p) |
| 127 |
{ |
| 128 |
const int nc = rop->mtx->ncomp; |
| 129 |
const float * wlp = rop->mtx->wlpart; |
| 130 |
int i; |
| 131 |
|
| 132 |
for (i = nc; i--; ) { |
| 133 |
int nmEnd = wlp[0] + (wlp[3] - wlp[0])*i/nc; |
| 134 |
int nmStart = wlp[0] + (wlp[3] - wlp[0])*(i+1)/nc; |
| 135 |
COLOR crgb; |
| 136 |
spec_rgb(crgb, nmStart, nmEnd); |
| 137 |
rop->preop.cmat[r*nc+i] = crgb[p]; |
| 138 |
} |
| 139 |
} |
| 140 |
|
| 141 |
/* Compute conversion row from spectrum to one channel of XYZ */ |
| 142 |
void |
| 143 |
xyzrow(ROPMAT *rop, int r, int p) |
| 144 |
{ |
| 145 |
const int nc = rop->mtx->ncomp; |
| 146 |
const float * wlp = rop->mtx->wlpart; |
| 147 |
int i; |
| 148 |
|
| 149 |
for (i = nc; i--; ) { |
| 150 |
int nmEnd = wlp[0] + (wlp[3] - wlp[0])*i/nc; |
| 151 |
int nmStart = wlp[0] + (wlp[3] - wlp[0])*(i+1)/nc; |
| 152 |
COLOR cxyz; |
| 153 |
spec_cie(cxyz, nmStart, nmEnd); |
| 154 |
rop->preop.cmat[r*nc+i] = cxyz[p]; |
| 155 |
} |
| 156 |
} |
| 157 |
|
| 158 |
/* Use the spectral sensitivity function to compute matrix coefficients */ |
| 159 |
void |
| 160 |
sensrow(ROPMAT *rop, int r, double (*sf)(const SCOLOR sc, int ncs, const float wlpt[4])) |
| 161 |
{ |
| 162 |
const int nc = rop->mtx->ncomp; |
| 163 |
int i; |
| 164 |
|
| 165 |
for (i = nc; i--; ) { |
| 166 |
SCOLOR sclr; |
| 167 |
memset(sclr, 0, sizeof(COLORV)*nc); |
| 168 |
sclr[i] = 1.f; |
| 169 |
rop->preop.cmat[r*nc+i] = (*sf)(sclr, nc, rop->mtx->wlpart); |
| 170 |
} |
| 171 |
} |
| 172 |
|
| 173 |
/* Check/set symbolic transform */ |
| 174 |
int |
| 175 |
checksymbolic(ROPMAT *rop) |
| 176 |
{ |
| 177 |
const int nc = rop->mtx->ncomp; |
| 178 |
const int dt = rop->mtx->dtype; |
| 179 |
double cf = 1; |
| 180 |
int i, j; |
| 181 |
/* check suffix => reference file */ |
| 182 |
if (strchr(rop->preop.csym, '.') > rop->preop.csym) |
| 183 |
return(checkreffile(rop)); |
| 184 |
|
| 185 |
if (nc < 3) { |
| 186 |
fprintf(stderr, "%s: -c '%s' requires at least 3 components\n", |
| 187 |
rop->inspec, rop->preop.csym); |
| 188 |
return(-1); |
| 189 |
} |
| 190 |
rop->preop.clen = strlen(rop->preop.csym) * nc; |
| 191 |
if (rop->preop.clen > MAXCOMP*MAXCOMP) { |
| 192 |
fprintf(stderr, "%s: -c '%s' results in too many components\n", |
| 193 |
rop->inspec, rop->preop.csym); |
| 194 |
return(-1); |
| 195 |
} |
| 196 |
for (j = 0; rop->preop.csym[j]; j++) { |
| 197 |
int comp = 0; |
| 198 |
switch (rop->preop.csym[j]) { |
| 199 |
case 'B': |
| 200 |
case 'b': |
| 201 |
++comp; |
| 202 |
/* fall through */ |
| 203 |
case 'G': |
| 204 |
case 'g': |
| 205 |
++comp; |
| 206 |
/* fall through */ |
| 207 |
case 'R': |
| 208 |
case 'r': |
| 209 |
if (rop->preop.csym[j] <= 'Z') |
| 210 |
cf = 1./WHTEFFICACY; |
| 211 |
if (dt == DTxyze) { |
| 212 |
for (i = 3; i--; ) |
| 213 |
rop->preop.cmat[j*nc+i] = cf*xyz2rgbmat[comp][i]; |
| 214 |
} else if (nc == 3) |
| 215 |
rop->preop.cmat[j*nc+comp] = 1.; |
| 216 |
else |
| 217 |
rgbrow(rop, j, comp); |
| 218 |
break; |
| 219 |
case 'Z': |
| 220 |
case 'z': |
| 221 |
++comp; |
| 222 |
/* fall through */ |
| 223 |
case 'Y': |
| 224 |
case 'y': |
| 225 |
++comp; |
| 226 |
/* fall through */ |
| 227 |
case 'X': |
| 228 |
case 'x': |
| 229 |
if ((rop->preop.csym[j] <= 'Z') & (dt != DTxyze)) |
| 230 |
cf = WHTEFFICACY; |
| 231 |
if (dt == DTxyze) { |
| 232 |
rop->preop.cmat[j*nc+comp] = 1.; |
| 233 |
} else if (nc == 3) { |
| 234 |
for (i = 3; i--; ) |
| 235 |
rop->preop.cmat[j*nc+i] = |
| 236 |
rgb2xyzmat[comp][i]; |
| 237 |
} else if (comp == CIEY) |
| 238 |
sensrow(rop, j, scolor2photopic); |
| 239 |
else |
| 240 |
xyzrow(rop, j, comp); |
| 241 |
|
| 242 |
for (i = nc*(cf != 1); i--; ) |
| 243 |
rop->preop.cmat[j*nc+i] *= cf; |
| 244 |
break; |
| 245 |
case 'S': /* scotopic (il)luminance */ |
| 246 |
cf = WHTSCOTOPIC; |
| 247 |
/* fall through */ |
| 248 |
case 's': |
| 249 |
sensrow(rop, j, scolor2scotopic); |
| 250 |
for (i = nc*(cf != 1); i--; ) |
| 251 |
rop->preop.cmat[j*nc+i] *= cf; |
| 252 |
break; |
| 253 |
case 'M': /* melanopic (il)luminance */ |
| 254 |
cf = WHTMELANOPIC; |
| 255 |
/* fall through */ |
| 256 |
case 'm': |
| 257 |
sensrow(rop, j, scolor2melanopic); |
| 258 |
for (i = nc*(cf != 1); i--; ) |
| 259 |
rop->preop.cmat[j*nc+i] *= cf; |
| 260 |
break; |
| 261 |
case 'A': /* average component */ |
| 262 |
case 'a': |
| 263 |
for (i = nc; i--; ) |
| 264 |
rop->preop.cmat[j*nc+i] = 1./(double)nc; |
| 265 |
break; |
| 266 |
default: |
| 267 |
fprintf(stderr, "%s: -c '%c' unsupported\n", |
| 268 |
rop->inspec, rop->preop.csym[j]); |
| 269 |
return(-1); |
| 270 |
} |
| 271 |
} |
| 272 |
/* return recommended output type */ |
| 273 |
if (!strcasecmp(rop->preop.csym, "XYZ")) { |
| 274 |
if (dt <= DTspec) |
| 275 |
return(DTxyze); |
| 276 |
} else if (!strcasecmp(rop->preop.csym, "RGB")) { |
| 277 |
if (dt <= DTspec) |
| 278 |
return(DTrgbe); |
| 279 |
} else if (dt == DTspec) |
| 280 |
return(DTfloat); /* probably not actual spectrum */ |
| 281 |
return(0); |
| 282 |
} |
| 283 |
|
| 284 |
/* Get matrix and perform unary operations */ |
| 285 |
RMATRIX * |
| 286 |
loadop(ROPMAT *rop) |
| 287 |
{ |
| 288 |
int outtype = 0; |
| 289 |
RMATRIX *mres; |
| 290 |
int i, j; |
| 291 |
|
| 292 |
if (loadmatrix(rop) < 0) /* make sure we're loaded */ |
| 293 |
return(NULL); |
| 294 |
|
| 295 |
if (rop->preop.csym && /* symbolic transform? */ |
| 296 |
(outtype = checksymbolic(rop)) < 0) |
| 297 |
goto failure; |
| 298 |
if (rop->preop.clen > 0) { /* apply component transform? */ |
| 299 |
if (rop->preop.clen % rop->mtx->ncomp) { |
| 300 |
fprintf(stderr, "%s: -c must have N x %d coefficients\n", |
| 301 |
rop->inspec, rop->mtx->ncomp); |
| 302 |
goto failure; |
| 303 |
} |
| 304 |
if (rop->preop.nsf > 0) { /* scale transform, first */ |
| 305 |
if (rop->preop.nsf == 1) { |
| 306 |
for (i = rop->preop.clen; i--; ) |
| 307 |
rop->preop.cmat[i] *= rop->preop.sca[0]; |
| 308 |
} else if (rop->preop.nsf*rop->mtx->ncomp != rop->preop.clen) { |
| 309 |
fprintf(stderr, "%s: -s must have one or %d factors\n", |
| 310 |
rop->inspec, |
| 311 |
rop->preop.clen/rop->mtx->ncomp); |
| 312 |
goto failure; |
| 313 |
} else { |
| 314 |
for (i = rop->preop.nsf; i--; ) |
| 315 |
for (j = rop->mtx->ncomp; j--; ) |
| 316 |
rop->preop.cmat[i*rop->mtx->ncomp+j] |
| 317 |
*= rop->preop.sca[i]; |
| 318 |
} |
| 319 |
} |
| 320 |
mres = rmx_transform(rop->mtx, rop->preop.clen/rop->mtx->ncomp, |
| 321 |
rop->preop.cmat); |
| 322 |
if (mres == NULL) { |
| 323 |
fprintf(stderr, "%s: matrix transform failed\n", |
| 324 |
rop->inspec); |
| 325 |
goto failure; |
| 326 |
} |
| 327 |
if (verbose) |
| 328 |
fprintf(stderr, "%s: applied %d x %d transform%s\n", |
| 329 |
rop->inspec, mres->ncomp, |
| 330 |
rop->mtx->ncomp, |
| 331 |
rop->preop.nsf ? " (* scalar)" : ""); |
| 332 |
rop->preop.nsf = 0; /* now folded in */ |
| 333 |
if ((mres->ncomp > 3) & (mres->dtype <= DTspec)) |
| 334 |
outtype = DTfloat; /* probably not actual spectrum */ |
| 335 |
rmx_free(rop->mtx); |
| 336 |
rop->mtx = mres; |
| 337 |
} |
| 338 |
if (rop->preop.nsf > 0) { /* apply scalar(s)? */ |
| 339 |
if (rop->preop.nsf == 1) { |
| 340 |
for (i = rop->mtx->ncomp; --i; ) |
| 341 |
rop->preop.sca[i] = rop->preop.sca[0]; |
| 342 |
} else if (rop->preop.nsf != rop->mtx->ncomp) { |
| 343 |
fprintf(stderr, "%s: -s must have one or %d factors\n", |
| 344 |
rop->inspec, rop->mtx->ncomp); |
| 345 |
goto failure; |
| 346 |
} |
| 347 |
if (!rmx_scale(rop->mtx, rop->preop.sca)) { |
| 348 |
fputs(rop->inspec, stderr); |
| 349 |
fputs(": scalar operation failed\n", stderr); |
| 350 |
goto failure; |
| 351 |
} |
| 352 |
if (verbose) { |
| 353 |
fputs(rop->inspec, stderr); |
| 354 |
fputs(": applied scalar (", stderr); |
| 355 |
for (i = 0; i < rop->preop.nsf; i++) |
| 356 |
fprintf(stderr, " %f", rop->preop.sca[i]); |
| 357 |
fputs(" )\n", stderr); |
| 358 |
} |
| 359 |
} |
| 360 |
if (rop->preop.transpose) { /* transpose matrix? */ |
| 361 |
if (!rmx_transpose(rop->mtx)) { |
| 362 |
fputs(rop->inspec, stderr); |
| 363 |
fputs(": transpose failed\n", stderr); |
| 364 |
goto failure; |
| 365 |
} |
| 366 |
if (verbose) { |
| 367 |
fputs(rop->inspec, stderr); |
| 368 |
fputs(": transposed rows and columns\n", stderr); |
| 369 |
} |
| 370 |
} |
| 371 |
mres = rop->mtx; |
| 372 |
rop->mtx = NULL; |
| 373 |
if (outtype) |
| 374 |
mres->dtype = outtype; |
| 375 |
return(mres); |
| 376 |
failure: |
| 377 |
rmx_free(rop->mtx); |
| 378 |
return(rop->mtx = NULL); |
| 379 |
} |
| 380 |
|
| 381 |
/* Execute binary operation, free matrix arguments and return new result */ |
| 382 |
RMATRIX * |
| 383 |
binaryop(const char *inspec, RMATRIX *mleft, int op, RMATRIX *mright) |
| 384 |
{ |
| 385 |
RMATRIX *mres = NULL; |
| 386 |
int i; |
| 387 |
|
| 388 |
if ((mleft == NULL) | (mright == NULL)) |
| 389 |
return(NULL); |
| 390 |
switch (op) { |
| 391 |
case '.': /* concatenate */ |
| 392 |
if (mleft->ncomp != mright->ncomp) { |
| 393 |
fputs(inspec, stderr); |
| 394 |
fputs(": # components do not match\n", stderr); |
| 395 |
} else if (mleft->ncols != mright->nrows) { |
| 396 |
fputs(inspec, stderr); |
| 397 |
fputs(": mismatched dimensions\n", |
| 398 |
stderr); |
| 399 |
} else |
| 400 |
mres = rmx_multiply(mleft, mright); |
| 401 |
rmx_free(mleft); |
| 402 |
rmx_free(mright); |
| 403 |
if (mres == NULL) { |
| 404 |
fputs(inspec, stderr); |
| 405 |
fputs(": concatenation failed\n", stderr); |
| 406 |
return(NULL); |
| 407 |
} |
| 408 |
if (verbose) { |
| 409 |
fputs(inspec, stderr); |
| 410 |
fputs(": concatenated matrix\n", stderr); |
| 411 |
} |
| 412 |
break; |
| 413 |
case '+': |
| 414 |
if (!rmx_sum(mleft, mright, NULL)) { |
| 415 |
fputs(inspec, stderr); |
| 416 |
fputs(": matrix sum failed\n", stderr); |
| 417 |
rmx_free(mleft); |
| 418 |
rmx_free(mright); |
| 419 |
return(NULL); |
| 420 |
} |
| 421 |
if (verbose) { |
| 422 |
fputs(inspec, stderr); |
| 423 |
fputs(": added in matrix\n", stderr); |
| 424 |
} |
| 425 |
rmx_free(mright); |
| 426 |
mres = mleft; |
| 427 |
break; |
| 428 |
case '*': |
| 429 |
case '/': { |
| 430 |
const char * tnam = (op == '/') ? |
| 431 |
"division" : "multiplication"; |
| 432 |
errno = 0; |
| 433 |
if (!rmx_elemult(mleft, mright, (op == '/'))) { |
| 434 |
fprintf(stderr, "%s: element-wise %s failed\n", |
| 435 |
inspec, tnam); |
| 436 |
rmx_free(mleft); |
| 437 |
rmx_free(mright); |
| 438 |
return(NULL); |
| 439 |
} |
| 440 |
if (errno) |
| 441 |
fprintf(stderr, |
| 442 |
"%s: warning - error during element-wise %s\n", |
| 443 |
inspec, tnam); |
| 444 |
else if (verbose) |
| 445 |
fprintf(stderr, "%s: element-wise %s\n", inspec, tnam); |
| 446 |
rmx_free(mright); |
| 447 |
mres = mleft; |
| 448 |
} break; |
| 449 |
default: |
| 450 |
fprintf(stderr, "%s: unknown operation '%c'\n", inspec, op); |
| 451 |
rmx_free(mleft); |
| 452 |
rmx_free(mright); |
| 453 |
return(NULL); |
| 454 |
} |
| 455 |
return(mres); |
| 456 |
} |
| 457 |
|
| 458 |
/* Perform matrix operations from left to right */ |
| 459 |
RMATRIX * |
| 460 |
op_left2right(ROPMAT *mop) |
| 461 |
{ |
| 462 |
RMATRIX *mleft = loadop(mop); |
| 463 |
|
| 464 |
while (mop->binop) { |
| 465 |
if (mleft == NULL) |
| 466 |
break; |
| 467 |
mleft = binaryop(mop[1].inspec, |
| 468 |
mleft, mop->binop, loadop(mop+1)); |
| 469 |
mop++; |
| 470 |
} |
| 471 |
return(mleft); |
| 472 |
} |
| 473 |
|
| 474 |
/* Perform matrix operations from right to left */ |
| 475 |
RMATRIX * |
| 476 |
op_right2left(ROPMAT *mop) |
| 477 |
{ |
| 478 |
RMATRIX *mright; |
| 479 |
int rpos = 0; |
| 480 |
/* find end of list */ |
| 481 |
while (mop[rpos].binop) |
| 482 |
if (mop[rpos++].binop != '.') { |
| 483 |
fputs( |
| 484 |
"Right-to-left evaluation only for matrix multiplication!\n", |
| 485 |
stderr); |
| 486 |
return(NULL); |
| 487 |
} |
| 488 |
mright = loadop(mop+rpos); |
| 489 |
while (rpos-- > 0) { |
| 490 |
if (mright == NULL) |
| 491 |
break; |
| 492 |
mright = binaryop(mop[rpos+1].inspec, |
| 493 |
loadop(mop+rpos), mop[rpos].binop, mright); |
| 494 |
} |
| 495 |
return(mright); |
| 496 |
} |
| 497 |
|
| 498 |
#define t_nrows(mop) ((mop)->preop.transpose ? (mop)->mtx->ncols \ |
| 499 |
: (mop)->mtx->nrows) |
| 500 |
#define t_ncols(mop) ((mop)->preop.transpose ? (mop)->mtx->nrows \ |
| 501 |
: (mop)->mtx->ncols) |
| 502 |
|
| 503 |
/* Should we prefer concatenating from rightmost matrix towards left? */ |
| 504 |
int |
| 505 |
prefer_right2left(ROPMAT *mop) |
| 506 |
{ |
| 507 |
int mri = 0; |
| 508 |
|
| 509 |
while (mop[mri].binop) /* find rightmost matrix */ |
| 510 |
if (mop[mri++].binop != '.') |
| 511 |
return(0); /* pre-empt reversal for other ops */ |
| 512 |
|
| 513 |
if (mri <= 1) |
| 514 |
return(0); /* won't matter */ |
| 515 |
|
| 516 |
if (loadmatrix(mop+mri) < 0) /* load rightmost cat */ |
| 517 |
return(1); /* fail will bail in a moment */ |
| 518 |
|
| 519 |
if (t_ncols(mop+mri) == 1) |
| 520 |
return(1); /* definitely better R->L */ |
| 521 |
|
| 522 |
if (t_ncols(mop+mri) >= t_nrows(mop+mri)) |
| 523 |
return(0); /* ...probably worse */ |
| 524 |
|
| 525 |
if (loadmatrix(mop) < 0) /* load leftmost */ |
| 526 |
return(0); /* fail will bail in a moment */ |
| 527 |
|
| 528 |
return(t_ncols(mop+mri) < t_nrows(mop)); |
| 529 |
} |
| 530 |
|
| 531 |
int |
| 532 |
get_factors(double da[], int n, char *av[]) |
| 533 |
{ |
| 534 |
int ac; |
| 535 |
|
| 536 |
for (ac = 0; ac < n && isflt(av[ac]); ac++) |
| 537 |
da[ac] = atof(av[ac]); |
| 538 |
return(ac); |
| 539 |
} |
| 540 |
|
| 541 |
ROPMAT * |
| 542 |
resize_moparr(ROPMAT *mop, int n2alloc) |
| 543 |
{ |
| 544 |
int nmats = 0; |
| 545 |
int i; |
| 546 |
|
| 547 |
while (mop[nmats++].binop) |
| 548 |
; |
| 549 |
for (i = nmats; i >= n2alloc; i--) |
| 550 |
rmx_free(mop[i].mtx); |
| 551 |
mop = (ROPMAT *)realloc(mop, n2alloc*sizeof(ROPMAT)); |
| 552 |
if (mop == NULL) { |
| 553 |
fputs("Out of memory in resize_moparr()\n", stderr); |
| 554 |
exit(1); |
| 555 |
} |
| 556 |
if (n2alloc > nmats) |
| 557 |
memset(mop+nmats, 0, (n2alloc-nmats)*sizeof(ROPMAT)); |
| 558 |
return(mop); |
| 559 |
} |
| 560 |
|
| 561 |
/* Load one or more matrices and operate on them, sending results to stdout */ |
| 562 |
int |
| 563 |
main(int argc, char *argv[]) |
| 564 |
{ |
| 565 |
int outfmt = DTfromHeader; |
| 566 |
const char *defCsym = NULL; |
| 567 |
int nall = 2; |
| 568 |
ROPMAT *mop = (ROPMAT *)calloc(nall, sizeof(ROPMAT)); |
| 569 |
int nmats = 0; |
| 570 |
RMATRIX *mres = NULL; |
| 571 |
int stdin_used = 0; |
| 572 |
int i; |
| 573 |
/* get options and arguments */ |
| 574 |
for (i = 1; i < argc; i++) { |
| 575 |
if (argv[i][0] && !argv[i][1] && |
| 576 |
strchr(".+*/", argv[i][0]) != NULL) { |
| 577 |
if (!nmats || mop[nmats-1].binop) { |
| 578 |
fprintf(stderr, |
| 579 |
"%s: missing matrix argument before '%c' operation\n", |
| 580 |
argv[0], argv[i][0]); |
| 581 |
return(1); |
| 582 |
} |
| 583 |
mop[nmats-1].binop = argv[i][0]; |
| 584 |
} else if (argv[i][0] != '-' || !argv[i][1]) { |
| 585 |
if (argv[i][0] == '-') { |
| 586 |
if (stdin_used++) { |
| 587 |
fprintf(stderr, |
| 588 |
"%s: standard input used for more than one matrix\n", |
| 589 |
argv[0]); |
| 590 |
return(1); |
| 591 |
} |
| 592 |
mop[nmats].inspec = stdin_name; |
| 593 |
} else |
| 594 |
mop[nmats].inspec = argv[i]; |
| 595 |
if (!mop[nmats].preop.csym) |
| 596 |
mop[nmats].preop.csym = defCsym; |
| 597 |
if (nmats > 0 && !mop[nmats-1].binop) |
| 598 |
mop[nmats-1].binop = '.'; |
| 599 |
nmats++; |
| 600 |
} else { |
| 601 |
int n = argc-1 - i; |
| 602 |
switch (argv[i][1]) { /* get option */ |
| 603 |
case 'v': |
| 604 |
verbose++; |
| 605 |
break; |
| 606 |
case 'f': |
| 607 |
switch (argv[i][2]) { |
| 608 |
case 'd': |
| 609 |
outfmt = DTdouble; |
| 610 |
break; |
| 611 |
case 'f': |
| 612 |
outfmt = DTfloat; |
| 613 |
break; |
| 614 |
case 'a': |
| 615 |
outfmt = DTascii; |
| 616 |
break; |
| 617 |
case 'c': |
| 618 |
outfmt = DTrgbe; |
| 619 |
break; |
| 620 |
default: |
| 621 |
goto userr; |
| 622 |
} |
| 623 |
break; |
| 624 |
case 't': |
| 625 |
mop[nmats].preop.transpose = 1; |
| 626 |
break; |
| 627 |
case 's': |
| 628 |
if (n > MAXCOMP) n = MAXCOMP; |
| 629 |
i += mop[nmats].preop.nsf = |
| 630 |
get_factors(mop[nmats].preop.sca, |
| 631 |
n, argv+i+1); |
| 632 |
if (mop[nmats].preop.nsf <= 0) { |
| 633 |
fprintf(stderr, "%s: -s missing arguments\n", |
| 634 |
argv[0]); |
| 635 |
goto userr; |
| 636 |
} |
| 637 |
break; |
| 638 |
case 'C': |
| 639 |
if (!n || isflt(argv[i+1])) |
| 640 |
goto userr; |
| 641 |
defCsym = mop[nmats].preop.csym = argv[++i]; |
| 642 |
mop[nmats].preop.clen = 0; |
| 643 |
break; |
| 644 |
case 'c': |
| 645 |
if (n && !isflt(argv[i+1])) { |
| 646 |
mop[nmats].preop.csym = argv[++i]; |
| 647 |
mop[nmats].preop.clen = 0; |
| 648 |
break; |
| 649 |
} |
| 650 |
if (n > MAXCOMP*MAXCOMP) n = MAXCOMP*MAXCOMP; |
| 651 |
i += mop[nmats].preop.clen = |
| 652 |
get_factors(mop[nmats].preop.cmat, |
| 653 |
n, argv+i+1); |
| 654 |
if (mop[nmats].preop.clen <= 0) { |
| 655 |
fprintf(stderr, "%s: -c missing arguments\n", |
| 656 |
argv[0]); |
| 657 |
goto userr; |
| 658 |
} |
| 659 |
mop[nmats].preop.csym = NULL; |
| 660 |
break; |
| 661 |
case 'r': |
| 662 |
if (argv[i][2] == 'f') |
| 663 |
mop[nmats].rmp = RMPreflF; |
| 664 |
else if (argv[i][2] == 'b') |
| 665 |
mop[nmats].rmp = RMPreflB; |
| 666 |
else |
| 667 |
goto userr; |
| 668 |
break; |
| 669 |
default: |
| 670 |
fprintf(stderr, "%s: unknown operation '%s'\n", |
| 671 |
argv[0], argv[i]); |
| 672 |
goto userr; |
| 673 |
} |
| 674 |
} |
| 675 |
if (nmats >= nall) |
| 676 |
mop = resize_moparr(mop, nall += 2); |
| 677 |
} |
| 678 |
if (mop[0].inspec == NULL) /* nothing to do? */ |
| 679 |
goto userr; |
| 680 |
if (mop[nmats-1].binop) { |
| 681 |
fprintf(stderr, |
| 682 |
"%s: missing matrix argument after '%c' operation\n", |
| 683 |
argv[0], mop[nmats-1].binop); |
| 684 |
return(1); |
| 685 |
} |
| 686 |
/* favor quicker concatenation */ |
| 687 |
mop[nmats].mtx = prefer_right2left(mop) ? op_right2left(mop) |
| 688 |
: op_left2right(mop); |
| 689 |
if (mop[nmats].mtx == NULL) |
| 690 |
return(1); |
| 691 |
/* apply trailing unary operations */ |
| 692 |
mop[nmats].inspec = "trailing_ops"; |
| 693 |
mres = loadop(mop+nmats); |
| 694 |
if (mres == NULL) |
| 695 |
return(1); |
| 696 |
if ((outfmt == DTfromHeader) & (mres->dtype < DTspec)) |
| 697 |
outfmt = mres->dtype; |
| 698 |
if (outfmt == DTrgbe) { /* check data type */ |
| 699 |
if (mres->ncomp > 3) |
| 700 |
outfmt = DTspec; |
| 701 |
else if (mres->dtype == DTxyze) |
| 702 |
outfmt = DTxyze; |
| 703 |
} |
| 704 |
#if DTrmx_native==DTfloat |
| 705 |
if (outfmt == DTdouble) |
| 706 |
fprintf(stderr, |
| 707 |
"%s: warning - writing float result as double\n", |
| 708 |
argv[0]); |
| 709 |
#endif |
| 710 |
newheader("RADIANCE", stdout); /* write result to stdout */ |
| 711 |
printargs(argc, argv, stdout); |
| 712 |
return(rmx_write(mres, outfmt, stdout) ? 0 : 1); |
| 713 |
userr: |
| 714 |
fprintf(stderr, |
| 715 |
"Usage: %s [-v][-f{adfc}][-t][-s sf .. | -c ce ..][-rf|-rb] m1 [.+*/] .. > mres\n", |
| 716 |
argv[0]); |
| 717 |
return(1); |
| 718 |
} |
