| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rmtxop.c,v 2.16 2019/08/12 20:38:19 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* General component matrix operations. |
| 6 |
*/ |
| 7 |
|
| 8 |
#include <stdlib.h> |
| 9 |
#include <errno.h> |
| 10 |
#include "rtio.h" |
| 11 |
#include "resolu.h" |
| 12 |
#include "rmatrix.h" |
| 13 |
#include "platform.h" |
| 14 |
|
| 15 |
#define MAXCOMP 16 /* #components we support */ |
| 16 |
|
| 17 |
static const char stdin_name[] = "<stdin>"; |
| 18 |
|
| 19 |
/* unary matrix operation(s) */ |
| 20 |
typedef struct { |
| 21 |
double sca[MAXCOMP]; /* scalar coefficients */ |
| 22 |
double cmat[MAXCOMP*MAXCOMP]; /* component transformation */ |
| 23 |
short nsf; /* number of scalars */ |
| 24 |
short clen; /* number of coefficients */ |
| 25 |
short transpose; /* do transpose? */ |
| 26 |
} RUNARYOP; |
| 27 |
|
| 28 |
/* matrix input source and requested operation(s) */ |
| 29 |
typedef struct { |
| 30 |
const char *inspec; /* input specification */ |
| 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 |
static int |
| 40 |
loadmatrix(ROPMAT *rop) |
| 41 |
{ |
| 42 |
if (rop->mtx != NULL) |
| 43 |
return(0); |
| 44 |
|
| 45 |
rop->mtx = rmx_load(rop->inspec == stdin_name ? |
| 46 |
(const char *)NULL : rop->inspec); |
| 47 |
if (rop->mtx == NULL) { |
| 48 |
fputs(rop->inspec, stderr); |
| 49 |
fputs(": cannot load matrix\n", stderr); |
| 50 |
return(-1); |
| 51 |
} |
| 52 |
return(1); |
| 53 |
} |
| 54 |
|
| 55 |
/* Get matrix and perform unary operations */ |
| 56 |
static RMATRIX * |
| 57 |
loadop(ROPMAT *rop) |
| 58 |
{ |
| 59 |
RMATRIX *mres; |
| 60 |
int i; |
| 61 |
|
| 62 |
if (loadmatrix(rop) < 0) /* make sure we're loaded */ |
| 63 |
return(NULL); |
| 64 |
|
| 65 |
if (rop->preop.nsf > 0) { /* apply scalar(s) */ |
| 66 |
if (rop->preop.clen > 0) { |
| 67 |
fputs("Options -s and -c are exclusive\n", stderr); |
| 68 |
goto failure; |
| 69 |
} |
| 70 |
if (rop->preop.nsf == 1) { |
| 71 |
for (i = rop->mtx->ncomp; --i; ) |
| 72 |
rop->preop.sca[i] = rop->preop.sca[0]; |
| 73 |
} else if (rop->preop.nsf != rop->mtx->ncomp) { |
| 74 |
fprintf(stderr, "%s: -s must have one or %d factors\n", |
| 75 |
rop->inspec, rop->mtx->ncomp); |
| 76 |
goto failure; |
| 77 |
} |
| 78 |
if (!rmx_scale(rop->mtx, rop->preop.sca)) { |
| 79 |
fputs(rop->inspec, stderr); |
| 80 |
fputs(": scalar operation failed\n", stderr); |
| 81 |
goto failure; |
| 82 |
} |
| 83 |
if (verbose) { |
| 84 |
fputs(rop->inspec, stderr); |
| 85 |
fputs(": applied scalar (", stderr); |
| 86 |
for (i = 0; i < rop->preop.nsf; i++) |
| 87 |
fprintf(stderr, " %f", rop->preop.sca[i]); |
| 88 |
fputs(" )\n", stderr); |
| 89 |
} |
| 90 |
} |
| 91 |
if (rop->preop.clen > 0) { /* apply transform */ |
| 92 |
if (rop->preop.clen % rop->mtx->ncomp) { |
| 93 |
fprintf(stderr, "%s: -c must have N x %d coefficients\n", |
| 94 |
rop->inspec, rop->mtx->ncomp); |
| 95 |
goto failure; |
| 96 |
} |
| 97 |
mres = rmx_transform(rop->mtx, rop->preop.clen/rop->mtx->ncomp, |
| 98 |
rop->preop.cmat); |
| 99 |
if (mres == NULL) { |
| 100 |
fprintf(stderr, "%s: matrix transform failed\n", |
| 101 |
rop->inspec); |
| 102 |
goto failure; |
| 103 |
} |
| 104 |
if (verbose) |
| 105 |
fprintf(stderr, "%s: applied %d x %d transform\n", |
| 106 |
rop->inspec, mres->ncomp, |
| 107 |
rop->mtx->ncomp); |
| 108 |
rmx_free(rop->mtx); |
| 109 |
rop->mtx = mres; |
| 110 |
} |
| 111 |
if (rop->preop.transpose) { /* transpose matrix? */ |
| 112 |
mres = rmx_transpose(rop->mtx); |
| 113 |
if (mres == NULL) { |
| 114 |
fputs(rop->inspec, stderr); |
| 115 |
fputs(": transpose failed\n", stderr); |
| 116 |
goto failure; |
| 117 |
} |
| 118 |
if (verbose) { |
| 119 |
fputs(rop->inspec, stderr); |
| 120 |
fputs(": transposed rows and columns\n", stderr); |
| 121 |
} |
| 122 |
rmx_free(rop->mtx); |
| 123 |
rop->mtx = mres; |
| 124 |
} |
| 125 |
mres = rop->mtx; |
| 126 |
rop->mtx = NULL; |
| 127 |
return(mres); |
| 128 |
failure: |
| 129 |
rmx_free(rop->mtx); |
| 130 |
return(rop->mtx = NULL); |
| 131 |
} |
| 132 |
|
| 133 |
/* Execute binary operation, free matrix arguments and return new result */ |
| 134 |
static RMATRIX * |
| 135 |
binaryop(const char *inspec, RMATRIX *mleft, int op, RMATRIX *mright) |
| 136 |
{ |
| 137 |
RMATRIX *mres = NULL; |
| 138 |
int i; |
| 139 |
|
| 140 |
if ((mleft == NULL) | (mright == NULL)) |
| 141 |
return(NULL); |
| 142 |
switch (op) { |
| 143 |
case '.': /* concatenate */ |
| 144 |
if (mleft->ncomp != mright->ncomp) { |
| 145 |
fputs(inspec, stderr); |
| 146 |
fputs(": # components do not match\n", stderr); |
| 147 |
} else if (mleft->ncols != mright->nrows) { |
| 148 |
fputs(inspec, stderr); |
| 149 |
fputs(": mismatched dimensions\n", |
| 150 |
stderr); |
| 151 |
} else |
| 152 |
mres = rmx_multiply(mleft, mright); |
| 153 |
rmx_free(mleft); |
| 154 |
rmx_free(mright); |
| 155 |
if (mres == NULL) { |
| 156 |
fputs(inspec, stderr); |
| 157 |
fputs(": concatenation failed\n", stderr); |
| 158 |
return(NULL); |
| 159 |
} |
| 160 |
if (verbose) { |
| 161 |
fputs(inspec, stderr); |
| 162 |
fputs(": concatenated matrix\n", stderr); |
| 163 |
} |
| 164 |
break; |
| 165 |
case '+': |
| 166 |
if (!rmx_sum(mleft, mright, NULL)) { |
| 167 |
fputs(inspec, stderr); |
| 168 |
fputs(": matrix sum failed\n", stderr); |
| 169 |
rmx_free(mleft); |
| 170 |
rmx_free(mright); |
| 171 |
return(NULL); |
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} |
| 173 |
if (verbose) { |
| 174 |
fputs(inspec, stderr); |
| 175 |
fputs(": added in matrix\n", stderr); |
| 176 |
} |
| 177 |
rmx_free(mright); |
| 178 |
mres = mleft; |
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break; |
| 180 |
case '*': |
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case '/': { |
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const char * tnam = (op == '/') ? |
| 183 |
"division" : "multiplication"; |
| 184 |
errno = 0; |
| 185 |
if (!rmx_elemult(mleft, mright, (op == '/'))) { |
| 186 |
fprintf(stderr, "%s: element-wise %s failed\n", |
| 187 |
inspec, tnam); |
| 188 |
rmx_free(mleft); |
| 189 |
rmx_free(mright); |
| 190 |
return(NULL); |
| 191 |
} |
| 192 |
if (errno) |
| 193 |
fprintf(stderr, |
| 194 |
"%s: warning - error during element-wise %s\n", |
| 195 |
inspec, tnam); |
| 196 |
else if (verbose) |
| 197 |
fprintf(stderr, "%s: element-wise %s\n", inspec, tnam); |
| 198 |
rmx_free(mright); |
| 199 |
mres = mleft; |
| 200 |
} break; |
| 201 |
default: |
| 202 |
fprintf(stderr, "%s: unknown operation '%c'\n", inspec, op); |
| 203 |
rmx_free(mleft); |
| 204 |
rmx_free(mright); |
| 205 |
return(NULL); |
| 206 |
} |
| 207 |
return(mres); |
| 208 |
} |
| 209 |
|
| 210 |
/* Perform matrix operations from left to right */ |
| 211 |
static RMATRIX * |
| 212 |
op_left2right(ROPMAT *mop) |
| 213 |
{ |
| 214 |
RMATRIX *mleft = loadop(mop); |
| 215 |
|
| 216 |
while (mop->binop) { |
| 217 |
if (mleft == NULL) |
| 218 |
break; |
| 219 |
mleft = binaryop(mop[1].inspec, |
| 220 |
mleft, mop->binop, loadop(mop+1)); |
| 221 |
mop++; |
| 222 |
} |
| 223 |
return(mleft); |
| 224 |
} |
| 225 |
|
| 226 |
/* Perform matrix operations from right to left */ |
| 227 |
static RMATRIX * |
| 228 |
op_right2left(ROPMAT *mop) |
| 229 |
{ |
| 230 |
RMATRIX *mright; |
| 231 |
int rpos = 0; |
| 232 |
/* find end of list */ |
| 233 |
while (mop[rpos].binop) |
| 234 |
if (mop[rpos++].binop != '.') { |
| 235 |
fputs( |
| 236 |
"Right-to-left evaluation only for matrix multiplication!\n", |
| 237 |
stderr); |
| 238 |
return(NULL); |
| 239 |
} |
| 240 |
mright = loadop(mop+rpos); |
| 241 |
while (rpos-- > 0) { |
| 242 |
if (mright == NULL) |
| 243 |
break; |
| 244 |
mright = binaryop(mop[rpos].inspec, |
| 245 |
loadop(mop+rpos), mop[rpos].binop, mright); |
| 246 |
} |
| 247 |
return(mright); |
| 248 |
} |
| 249 |
|
| 250 |
#define t_nrows(mop) ((mop)->preop.transpose ? (mop)->mtx->ncols \ |
| 251 |
: (mop)->mtx->nrows) |
| 252 |
#define t_ncols(mop) ((mop)->preop.transpose ? (mop)->mtx->nrows \ |
| 253 |
: (mop)->mtx->ncols) |
| 254 |
|
| 255 |
/* Should we prefer concatenating from rightmost matrix towards left? */ |
| 256 |
static int |
| 257 |
prefer_right2left(ROPMAT *mop) |
| 258 |
{ |
| 259 |
int mri = 0; |
| 260 |
|
| 261 |
while (mop[mri].binop) /* find rightmost matrix */ |
| 262 |
if (mop[mri++].binop != '.') |
| 263 |
return(0); /* pre-empt reversal for other ops */ |
| 264 |
|
| 265 |
if (mri <= 1) |
| 266 |
return(0); /* won't matter */ |
| 267 |
|
| 268 |
if (loadmatrix(mop+mri) < 0) /* load rightmost cat */ |
| 269 |
return(1); /* fail will bail in a moment */ |
| 270 |
|
| 271 |
if (t_ncols(mop+mri) == 1) |
| 272 |
return(1); /* definitely better R->L */ |
| 273 |
|
| 274 |
if (t_ncols(mop+mri) >= t_nrows(mop+mri)) |
| 275 |
return(0); /* ...probably worse */ |
| 276 |
|
| 277 |
if (loadmatrix(mop) < 0) /* load leftmost */ |
| 278 |
return(0); /* fail will bail in a moment */ |
| 279 |
|
| 280 |
return(t_ncols(mop+mri) < t_nrows(mop)); |
| 281 |
} |
| 282 |
|
| 283 |
static int |
| 284 |
get_factors(double da[], int n, char *av[]) |
| 285 |
{ |
| 286 |
int ac; |
| 287 |
|
| 288 |
for (ac = 0; ac < n && isflt(av[ac]); ac++) |
| 289 |
da[ac] = atof(av[ac]); |
| 290 |
return(ac); |
| 291 |
} |
| 292 |
|
| 293 |
static ROPMAT * |
| 294 |
grow_moparray(ROPMAT *mop, int n2alloc) |
| 295 |
{ |
| 296 |
int nmats = 0; |
| 297 |
|
| 298 |
while (mop[nmats++].binop) |
| 299 |
; |
| 300 |
mop = (ROPMAT *)realloc(mop, n2alloc*sizeof(ROPMAT)); |
| 301 |
if (mop == NULL) { |
| 302 |
fputs("Out of memory in grow_moparray()\n", stderr); |
| 303 |
exit(1); |
| 304 |
} |
| 305 |
if (n2alloc > nmats) |
| 306 |
memset(mop+nmats, 0, (n2alloc-nmats)*sizeof(ROPMAT)); |
| 307 |
return(mop); |
| 308 |
} |
| 309 |
|
| 310 |
/* Load one or more matrices and operate on them, sending results to stdout */ |
| 311 |
int |
| 312 |
main(int argc, char *argv[]) |
| 313 |
{ |
| 314 |
int outfmt = DTfromHeader; |
| 315 |
int nall = 2; |
| 316 |
ROPMAT *mop = (ROPMAT *)calloc(nall, sizeof(ROPMAT)); |
| 317 |
int nmats = 0; |
| 318 |
RMATRIX *mres = NULL; |
| 319 |
int stdin_used = 0; |
| 320 |
int i; |
| 321 |
/* get options and arguments */ |
| 322 |
for (i = 1; i < argc; i++) { |
| 323 |
if (argv[i][0] && !argv[i][1] && |
| 324 |
strchr(".+*/", argv[i][0]) != NULL) { |
| 325 |
if (!nmats || mop[nmats-1].binop) { |
| 326 |
fprintf(stderr, |
| 327 |
"%s: missing matrix argument before '%c' operation\n", |
| 328 |
argv[0], argv[i][0]); |
| 329 |
return(1); |
| 330 |
} |
| 331 |
mop[nmats-1].binop = argv[i][0]; |
| 332 |
} else if (argv[i][0] != '-' || !argv[i][1]) { |
| 333 |
if (argv[i][0] == '-') { |
| 334 |
if (stdin_used++) { |
| 335 |
fprintf(stderr, |
| 336 |
"%s: standard input used for more than one matrix\n", |
| 337 |
argv[0]); |
| 338 |
return(1); |
| 339 |
} |
| 340 |
mop[nmats].inspec = stdin_name; |
| 341 |
} else |
| 342 |
mop[nmats].inspec = argv[i]; |
| 343 |
if (nmats > 0 && !mop[nmats-1].binop) |
| 344 |
mop[nmats-1].binop = '.'; |
| 345 |
nmats++; |
| 346 |
} else { |
| 347 |
int n = argc-1 - i; |
| 348 |
switch (argv[i][1]) { /* get option */ |
| 349 |
case 'v': |
| 350 |
verbose++; |
| 351 |
break; |
| 352 |
case 'f': |
| 353 |
switch (argv[i][2]) { |
| 354 |
case 'd': |
| 355 |
outfmt = DTdouble; |
| 356 |
break; |
| 357 |
case 'f': |
| 358 |
outfmt = DTfloat; |
| 359 |
break; |
| 360 |
case 'a': |
| 361 |
outfmt = DTascii; |
| 362 |
break; |
| 363 |
case 'c': |
| 364 |
outfmt = DTrgbe; |
| 365 |
break; |
| 366 |
default: |
| 367 |
goto userr; |
| 368 |
} |
| 369 |
break; |
| 370 |
case 't': |
| 371 |
mop[nmats].preop.transpose = 1; |
| 372 |
break; |
| 373 |
case 's': |
| 374 |
if (n > MAXCOMP) n = MAXCOMP; |
| 375 |
i += mop[nmats].preop.nsf = |
| 376 |
get_factors(mop[nmats].preop.sca, |
| 377 |
n, argv+i+1); |
| 378 |
break; |
| 379 |
case 'c': |
| 380 |
if (n > MAXCOMP*MAXCOMP) n = MAXCOMP*MAXCOMP; |
| 381 |
i += mop[nmats].preop.clen = |
| 382 |
get_factors(mop[nmats].preop.cmat, |
| 383 |
n, argv+i+1); |
| 384 |
break; |
| 385 |
default: |
| 386 |
fprintf(stderr, "%s: unknown operation '%s'\n", |
| 387 |
argv[0], argv[i]); |
| 388 |
goto userr; |
| 389 |
} |
| 390 |
} |
| 391 |
if (nmats >= nall) |
| 392 |
mop = grow_moparray(mop, nall += 2); |
| 393 |
} |
| 394 |
if (mop[0].inspec == NULL) /* nothing to do? */ |
| 395 |
goto userr; |
| 396 |
if (mop[nmats-1].binop) { |
| 397 |
fprintf(stderr, |
| 398 |
"%s: missing matrix argument after '%c' operation\n", |
| 399 |
argv[0], mop[nmats-1].binop); |
| 400 |
return(1); |
| 401 |
} |
| 402 |
/* favor quicker concatenation */ |
| 403 |
mop[nmats].mtx = prefer_right2left(mop) ? op_right2left(mop) |
| 404 |
: op_left2right(mop); |
| 405 |
if (mop[nmats].mtx == NULL) |
| 406 |
return(1); |
| 407 |
/* apply trailing unary operations */ |
| 408 |
mop[nmats].inspec = "trailing_ops"; |
| 409 |
mres = loadop(mop+nmats); |
| 410 |
if (mres == NULL) |
| 411 |
return(1); |
| 412 |
/* write result to stdout */ |
| 413 |
if (outfmt == DTfromHeader) |
| 414 |
outfmt = mres->dtype; |
| 415 |
if (outfmt != DTascii) |
| 416 |
SET_FILE_BINARY(stdout); |
| 417 |
newheader("RADIANCE", stdout); |
| 418 |
printargs(argc, argv, stdout); |
| 419 |
if (!rmx_write(mres, outfmt, stdout)) { |
| 420 |
fprintf(stderr, "%s: error writing result matrix\n", argv[0]); |
| 421 |
return(1); |
| 422 |
} |
| 423 |
/* rmx_free(mres); free(mop); */ |
| 424 |
return(0); |
| 425 |
userr: |
| 426 |
fprintf(stderr, |
| 427 |
"Usage: %s [-v][-f[adfc][-t][-s sf .. | -c ce ..] m1 [.+*/] .. > mres\n", |
| 428 |
argv[0]); |
| 429 |
return(1); |
| 430 |
} |
