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root/radiance/ray/src/util/rcomb.c
Revision: 2.34
Committed: Tue Aug 5 16:40:10 2025 UTC (3 days, 20 hours ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: HEAD
Changes since 2.33: +13 -1 lines
Log Message:
docs(rcomb): Added better commenting to functions

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rcomb.c,v 2.33 2025/08/02 20:37:52 greg Exp $";
3 #endif
4 /*
5 * General component matrix combiner, operating on a row at a time.
6 *
7 * Multi-processing mode under Unix creates children that each work
8 * on one input row at a time, fed by the original process. Final conversion
9 * and output to stdout is sorted by last child while its siblings send it
10 * their record calculations.
11 */
12
13 #include <math.h>
14 #include "platform.h"
15 #include "rtprocess.h"
16 #include "rtio.h"
17 #include "rmatrix.h"
18 #include "calcomp.h"
19
20 #ifndef M_PI
21 #define M_PI 3.14159265358979323846
22 #endif
23
24 /* Unary matrix operation(s) */
25 typedef struct {
26 double cmat[MAXCOMP*MAXCOMP]; /* component transformation */
27 double sca[MAXCOMP]; /* scalar coefficients */
28 const char *csym; /* symbolic coefficients */
29 short clen; /* number of coefficients */
30 short nsf; /* number of scalars */
31 } RUNARYOP;
32
33 /* Input matrix */
34 typedef struct {
35 const char *inspec; /* input specification */
36 RUNARYOP preop; /* transform operation */
37 RMATRIX imx; /* input matrix header info */
38 RMATRIX *rmp; /* active single-row matrix */
39 FILE *infp; /* open input stream */
40 } ROPMAT;
41
42 ROPMAT *mop = NULL; /* allocated input array */
43 int nall = 0; /* number allocated */
44 int nmats = 0; /* number of actual inputs */
45
46 RMATRIX *mcat = NULL; /* final concatenation */
47 int mcat_last = 0; /* goes after trailing ops? */
48
49 int in_nrows; /* number of input rows (or 0) */
50 #define in_ncols (mop[0].rmp->ncols) /* number of input columns */
51 #define in_ncomp (mop[0].rmp->ncomp) /* input #components */
52
53 extern int nowarn; /* turn off warnings? */
54
55 int cur_row; /* current input/output row */
56 int cur_col; /* current input/output column */
57 int cur_chan; /* if we're looping channels */
58
59 SUBPROC *cproc = NULL; /* child process array */
60 int nchildren = 0; /* # of child processes */
61 int inchild = -1; /* our child ID (-1: parent) */
62
63 extern int checksymbolic(ROPMAT *rop);
64
65 /* Split input matrices to allow for certain operations */
66 int
67 split_input(ROPMAT *rop)
68 {
69 if (rop->rmp == &rop->imx && !(rop->rmp = rmx_copy(&rop->imx))) {
70 fputs("Out of memory in split_input()\n", stderr);
71 return(0);
72 }
73 rmx_reset(rop->rmp);
74 return(1);
75 }
76
77 /* Check/set transform based on a reference input file */
78 int
79 checkreffile(ROPMAT *rop)
80 {
81 static const char *curRF = NULL;
82 static RMATRIX refm;
83 const int nc = rop->imx.ncomp;
84 int i;
85
86 if (!curRF || strcmp(rop->preop.csym, curRF)) {
87 FILE *fp = fopen(rop->preop.csym, "rb");
88 if (!rmx_load_header(&refm, fp)) {
89 fprintf(stderr, "%s: cannot read info header\n",
90 rop->preop.csym);
91 curRF = NULL;
92 if (fp) fclose(fp);
93 return(0);
94 }
95 fclose(fp);
96 curRF = rop->preop.csym;
97 }
98 if (refm.ncomp == 3) {
99 rop->preop.csym = (refm.dtype == DTxyze) ? "XYZ" : "RGB";
100 return(checksymbolic(rop));
101 }
102 if (refm.ncomp == 2) {
103 fprintf(stderr, "%s: cannot convert to 2 components\n",
104 curRF);
105 return(0);
106 }
107 if (refm.ncomp == 1) {
108 rop->preop.csym = "Y"; /* XXX big assumption */
109 return(checksymbolic(rop));
110 }
111 if (refm.ncomp == nc &&
112 !memcmp(refm.wlpart, rop->imx.wlpart, sizeof(refm.wlpart)))
113 return(1); /* nothing to do */
114
115 if ((nc <= 3) | (nc > MAXCSAMP) | (refm.ncomp > MAXCSAMP)) {
116 fprintf(stderr, "%s: cannot resample from %d to %d components\n",
117 curRF, nc, refm.ncomp);
118 return(0);
119 }
120 if (!split_input(rop)) /* get our own struct */
121 return(0);
122 rop->preop.clen = refm.ncomp * nc; /* compute spec to ref */
123
124 for (i = 0; i < nc; i++) {
125 SCOLOR scstim, scresp;
126 int j;
127 memset(scstim, 0, sizeof(COLORV)*nc);
128 scstim[i] = 1.f;
129 convertscolor(scresp, refm.ncomp, refm.wlpart[0], refm.wlpart[3],
130 scstim, nc, rop->imx.wlpart[0], rop->imx.wlpart[3]);
131 for (j = refm.ncomp; j-- > 0; )
132 rop->preop.cmat[j*nc + i] = scresp[j];
133 }
134 /* remember new spectral params */
135 memcpy(rop->rmp->wlpart, refm.wlpart, sizeof(rop->rmp->wlpart));
136 rop->rmp->ncomp = refm.ncomp;
137 return(1);
138 }
139
140 /* Compute conversion row from spectrum to one channel of RGB */
141 void
142 rgbrow(ROPMAT *rop, int r, int p)
143 {
144 const int nc = rop->imx.ncomp;
145 const float * wlp = rop->imx.wlpart;
146 int i;
147
148 for (i = nc; i--; ) {
149 int nmEnd = wlp[0] + (wlp[3] - wlp[0])*i/nc;
150 int nmStart = wlp[0] + (wlp[3] - wlp[0])*(i+1)/nc;
151 COLOR crgb;
152 spec_rgb(crgb, nmStart, nmEnd);
153 rop->preop.cmat[r*nc+i] = crgb[p];
154 }
155 }
156
157 /* Compute conversion row from spectrum to one channel of XYZ */
158 void
159 xyzrow(ROPMAT *rop, int r, int p)
160 {
161 const int nc = rop->imx.ncomp;
162 const float * wlp = rop->imx.wlpart;
163 int i;
164
165 for (i = nc; i--; ) {
166 int nmEnd = wlp[0] + (wlp[3] - wlp[0])*i/nc;
167 int nmStart = wlp[0] + (wlp[3] - wlp[0])*(i+1)/nc;
168 COLOR cxyz;
169 spec_cie(cxyz, nmStart, nmEnd);
170 rop->preop.cmat[r*nc+i] = cxyz[p];
171 }
172 }
173
174 /* Use the spectral sensitivity function to compute matrix coefficients */
175 void
176 sensrow(ROPMAT *rop, int r, double (*sf)(const SCOLOR sc, int ncs, const float wlpt[4]))
177 {
178 const int nc = rop->imx.ncomp;
179 int i;
180
181 for (i = nc; i--; ) {
182 SCOLOR sclr;
183 memset(sclr, 0, sizeof(COLORV)*nc);
184 sclr[i] = 1.f;
185 rop->preop.cmat[r*nc+i] = (*sf)(sclr, nc, rop->imx.wlpart);
186 }
187 }
188
189 /* Check/set symbolic transform */
190 int
191 checksymbolic(ROPMAT *rop)
192 {
193 const int nc = rop->imx.ncomp;
194 const int dt = rop->imx.dtype;
195 double cf = 1;
196 int i, j;
197 /* check suffix => reference file */
198 if (strchr(rop->preop.csym, '.') != NULL)
199 return(checkreffile(rop));
200
201 if (nc < 3) {
202 fprintf(stderr, "%s: -c '%s' requires at least 3 components\n",
203 rop->inspec, rop->preop.csym);
204 return(0);
205 }
206 rop->preop.clen = strlen(rop->preop.csym) * nc;
207 if (rop->preop.clen > MAXCOMP*MAXCOMP) {
208 fprintf(stderr, "%s: -c '%s' results in too many components\n",
209 rop->inspec, rop->preop.csym);
210 return(0);
211 }
212 for (j = 0; rop->preop.csym[j]; j++) {
213 int comp = 0;
214 switch (rop->preop.csym[j]) {
215 case 'B':
216 case 'b':
217 ++comp;
218 /* fall through */
219 case 'G':
220 case 'g':
221 ++comp;
222 /* fall through */
223 case 'R':
224 case 'r':
225 if (rop->preop.csym[j] <= 'Z')
226 cf = 1./WHTEFFICACY;
227 if (dt == DTxyze) {
228 for (i = 3; i--; )
229 rop->preop.cmat[j*nc+i] = cf*xyz2rgbmat[comp][i];
230 } else if (nc == 3)
231 rop->preop.cmat[j*nc+comp] = 1.;
232 else
233 rgbrow(rop, j, comp);
234 break;
235 case 'Z':
236 case 'z':
237 ++comp;
238 /* fall through */
239 case 'Y':
240 case 'y':
241 ++comp;
242 /* fall through */
243 case 'X':
244 case 'x':
245 if ((rop->preop.csym[j] <= 'Z') & (dt != DTxyze))
246 cf = WHTEFFICACY;
247 if (dt == DTxyze) {
248 rop->preop.cmat[j*nc+comp] = 1.;
249 } else if (nc == 3) {
250 for (i = 3; i--; )
251 rop->preop.cmat[j*nc+i] =
252 rgb2xyzmat[comp][i];
253 } else if (comp == CIEY)
254 sensrow(rop, j, scolor2photopic);
255 else
256 xyzrow(rop, j, comp);
257
258 for (i = nc*(cf != 1); i--; )
259 rop->preop.cmat[j*nc+i] *= cf;
260 break;
261 case 'S': /* scotopic (il)luminance */
262 cf = WHTSCOTOPIC;
263 /* fall through */
264 case 's':
265 sensrow(rop, j, scolor2scotopic);
266 for (i = nc*(cf != 1); i--; )
267 rop->preop.cmat[j*nc+i] *= cf;
268 break;
269 case 'M': /* melanopic (il)luminance */
270 cf = WHTMELANOPIC;
271 /* fall through */
272 case 'm':
273 sensrow(rop, j, scolor2melanopic);
274 for (i = nc*(cf != 1); i--; )
275 rop->preop.cmat[j*nc+i] *= cf;
276 break;
277 case 'A': /* average component */
278 case 'a':
279 for (i = nc; i--; )
280 rop->preop.cmat[j*nc+i] = 1./(double)nc;
281 break;
282 default:
283 fprintf(stderr, "%s: -c '%c' unsupported\n",
284 rop->inspec, rop->preop.csym[j]);
285 return(0);
286 }
287 }
288 if (!split_input(rop)) /* get our own struct */
289 return(0);
290 memcpy(rop->rmp->wlpart, WLPART, sizeof(rop->rmp->wlpart));
291 rop->rmp->ncomp = rop->preop.clen / nc;
292 /* decide on output type */
293 if (!strcasecmp(rop->preop.csym, "XYZ")) {
294 if (dt <= DTspec)
295 rop->rmp->dtype = DTxyze;
296 } else if (!strcasecmp(rop->preop.csym, "RGB")) {
297 if (dt <= DTspec)
298 rop->rmp->dtype = DTrgbe;
299 } else if (rop->rmp->dtype == DTspec)
300 rop->rmp->dtype = DTfloat;
301 return(1);
302 }
303
304 /* Set up color transform for matrix */
305 int
306 get_component_xfm(ROPMAT *rop)
307 {
308 int i, j;
309
310 if (rop->rmp != &rop->imx) { /* reset destination matrix */
311 rmx_free(rop->rmp);
312 rop->rmp = &rop->imx;
313 }
314 if (rop->preop.csym && /* symbolic transform? */
315 !checksymbolic(rop))
316 return(0);
317 /* undo exposure? */
318 if (fabs(1. - bright(rop->rmp->cexp)) > .025) {
319 if (rop->rmp->ncomp == 1)
320 rop->rmp->cexp[RED] = rop->rmp->cexp[GRN] =
321 rop->rmp->cexp[BLU] = bright(rop->rmp->cexp);
322 if (rop->preop.nsf <= 0) {
323 rop->preop.nsf = i = rop->rmp->ncomp;
324 while (i--)
325 rop->preop.sca[i] = 1.;
326 }
327 if (rop->preop.nsf == 1) {
328 if (rop->rmp->ncomp == 3) {
329 rop->preop.sca[2] = rop->preop.sca[1] =
330 rop->preop.sca[0];
331 rop->preop.nsf = 3;
332 } else
333 rop->preop.sca[0] /= bright(rop->rmp->cexp);
334 }
335 if (rop->preop.nsf == 3) {
336 opcolor(rop->preop.sca, /=, rop->rmp->cexp);
337 } else if (rop->preop.nsf > 3) { /* punt */
338 double mult = 1./bright(rop->rmp->cexp);
339 for (i = rop->preop.nsf; i--; )
340 rop->preop.sca[i] *= mult;
341 }
342 setcolor(rop->rmp->cexp, 1., 1., 1.);
343 }
344 if (rop->preop.clen > 0) { /* use component transform? */
345 if (rop->preop.clen % rop->imx.ncomp) {
346 fprintf(stderr, "%s: -c must have N x %d coefficients\n",
347 rop->inspec, rop->imx.ncomp);
348 return(0);
349 }
350 if (rop->preop.nsf > 0) { /* scale transform, instead */
351 if (rop->preop.nsf == 1) {
352 for (i = rop->preop.clen; i--; )
353 rop->preop.cmat[i] *= rop->preop.sca[0];
354 } else if (rop->preop.nsf*rop->imx.ncomp != rop->preop.clen) {
355 fprintf(stderr, "%s: -s must have one or %d factors\n",
356 rop->inspec,
357 rop->preop.clen/rop->imx.ncomp);
358 return(0);
359 } else {
360 for (i = rop->preop.nsf; i--; )
361 for (j = rop->imx.ncomp; j--; )
362 rop->preop.cmat[i*rop->imx.ncomp+j]
363 *= rop->preop.sca[i];
364 }
365 }
366 rop->preop.nsf = 0; /* now folded in */
367 if (!split_input(rop)) /* get our own struct */
368 return(0);
369 rop->rmp->ncomp = rop->preop.clen / rop->imx.ncomp;
370 if ((rop->rmp->ncomp > 3) & (rop->rmp->dtype <= DTspec)) {
371 rop->rmp->dtype = DTfloat; /* probably not actual spectrum */
372 memcpy(rop->rmp->wlpart, WLPART, sizeof(rop->rmp->wlpart));
373 }
374 } else if (rop->preop.nsf > 0) { /* else use scalar(s)? */
375 if (rop->preop.nsf == 1) {
376 for (i = rop->rmp->ncomp; --i; )
377 rop->preop.sca[i] = rop->preop.sca[0];
378 rop->preop.nsf = rop->rmp->ncomp;
379 } else if (rop->preop.nsf != rop->rmp->ncomp) {
380 fprintf(stderr, "%s: -s must have one or %d factors\n",
381 rop->inspec, rop->rmp->ncomp);
382 return(0);
383 }
384 }
385 return(1);
386 }
387
388 /* Apply the given color transform and/or scaling operation */
389 int
390 apply_op(RMATRIX *dst, const RMATRIX *src, const RUNARYOP *ro)
391 {
392 if (ro->clen > 0) {
393 RMATRIX *res = rmx_transform(src, dst->ncomp, ro->cmat);
394 if (!res) {
395 fputs("Error in call to rmx_transform()\n", stderr);
396 return(0);
397 }
398 if (!rmx_transfer_data(dst, res, 0))
399 return(0);
400 rmx_free(res);
401 } else if (dst != src)
402 memcpy(dst->mtx, src->mtx, rmx_array_size(dst));
403 if (ro->nsf == dst->ncomp)
404 rmx_scale(dst, ro->sca);
405 return(1);
406 }
407
408 /* Open the associated input file and load/check header */
409 int
410 open_input(ROPMAT *rop)
411 {
412 int outtype;
413
414 if (!rop || !rop->inspec || !rop->inspec[0])
415 return(0);
416 if (rop->inspec == stdin_name)
417 rop->infp = stdin;
418 else if (rop->inspec[0] == '!')
419 rop->infp = popen(rop->inspec+1, "r");
420 else
421 rop->infp = fopen(rop->inspec, "rb");
422
423 if (!rmx_load_header(&rop->imx, rop->infp)) {
424 fprintf(stderr, "Bad header from: %s\n", rop->inspec);
425 return(0);
426 }
427 return(get_component_xfm(rop));
428 }
429
430 /* Return nominal wavelength associated with input component (return nm) */
431 double
432 l_wavelength(char *nam)
433 {
434 double comp = argument(1);
435
436 if ((comp < -.5) | (comp >= in_ncomp+.5)) {
437 errno = EDOM;
438 return(.0);
439 }
440 if (comp < .5) /* asking for #components? */
441 return(in_ncomp);
442
443 if (in_ncomp == 3) { /* special case for RGB */
444 const int w0 = (int)(comp - .5);
445 return(mop[0].rmp->wlpart[w0] +
446 (comp-.5)*(mop[0].rmp->wlpart[w0+1] -
447 mop[0].rmp->wlpart[w0]));
448 }
449 return(mop[0].rmp->wlpart[0] + /* general case, even div. */
450 (comp-.5)/(double)in_ncomp *
451 (mop[0].rmp->wlpart[3] - mop[0].rmp->wlpart[0]));
452 }
453
454 /* Return ith input with optional channel selector */
455 double
456 l_chanin(char *nam)
457 {
458 double inp = argument(1);
459 int mi, chan;
460
461 if ((mi = (int)(inp-.5)) < 0 || mi >= nmats) {
462 errno = EDOM;
463 return(.0);
464 }
465 if (inp < .5) /* asking for #inputs? */
466 return(nmats);
467
468 if (nargum() >= 2) {
469 double cval = argument(2);
470 if (cval < .5 || (chan = (int)(cval-.5)) >= in_ncomp) {
471 errno = EDOM;
472 return(.0);
473 }
474 } else
475 chan = cur_chan;
476
477 return(mop[mi].rmp->mtx[cur_col*in_ncomp + chan]);
478 }
479
480 /* Set up our operations and check consistency */
481 int
482 initialize(RMATRIX *imp)
483 {
484 int i;
485 /* XXX struct is zeroed coming in */
486 setcolor(imp->cexp, 1.f, 1.f, 1.f);
487 for (i = 0; i < nmats; i++) { /* open each input */
488 int restype;
489 if (!open_input(&mop[i]))
490 return(0);
491 restype = mop[i].rmp->dtype;
492 if (!imp->dtype || (restype = rmx_newtype(restype, imp->dtype)) > 0)
493 imp->dtype = restype;
494 else if (!nowarn)
495 fprintf(stderr, "%s: warning - data type mismatch\n",
496 mop[i].inspec);
497 if (!i) {
498 imp->ncols = mop[0].rmp->ncols;
499 imp->ncomp = mop[0].rmp->ncomp;
500 memcpy(imp->wlpart, mop[0].rmp->wlpart, sizeof(imp->wlpart));
501 } else if ((mop[i].rmp->ncols != imp->ncols) |
502 (mop[i].rmp->ncomp != imp->ncomp) |
503 ((in_nrows > 0) & (mop[i].rmp->nrows > 0) &
504 (mop[i].rmp->nrows != in_nrows))) {
505 fprintf(stderr, "%s: mismatch in size or #components\n",
506 mop[i].inspec);
507 return(0);
508 } /* XXX should check wlpart? */
509 if (in_nrows <= 0)
510 in_nrows = imp->nrows = mop[i].rmp->nrows;
511 } /* set up .cal environment */
512 esupport |= E_VARIABLE|E_FUNCTION|E_RCONST;
513 esupport &= ~(E_OUTCHAN|E_INCHAN);
514 varset("PI", ':', M_PI);
515 varset("nfiles", ':', nmats);
516 varset("nrows", ':', in_nrows);
517 varset("ncols", ':', in_ncols);
518 varset("ncomp", ':', in_ncomp);
519 varset("R", ':', 1.);
520 varset("G", ':', 2.);
521 varset("B", ':', 3.);
522 funset("wl", 1, ':', l_wavelength);
523 funset("ci", 1, '=', l_chanin);
524 scompile("ri(i)=ci(i,R);gi(i)=ci(i,G);bi(i)=ci(i,B)", NULL, 0);
525 return(1);
526 }
527
528 /* Copy input header information to output header, indented */
529 void
530 output_headinfo(FILE *fp)
531 {
532 int i;
533
534 for (i = 0; i < nmats; i++) {
535 const char *cp = mop[i].imx.info;
536 fputs(mop[i].inspec, fp);
537 fputs(":\n", fp);
538 if (!cp) continue;
539 while (*cp) {
540 if (*cp == '\n') {
541 cp++; /* avoid inadvertant terminus */
542 continue;
543 }
544 fputc('\t', fp); /* indent this input's info */
545 do
546 putc(*cp, fp);
547 while (*cp++ != '\n');
548 }
549 }
550 }
551
552 /* Spawn the indicated number of children and return 1 in parent */
553 int
554 spawned_children(int np)
555 {
556 int i, rv;
557
558 #if defined(_WIN32) || defined(_WIN64)
559 if (np > 1) {
560 if (!nowarn)
561 fputs("Warning: only one process under Windows\n", stderr);
562 np = 1;
563 } else
564 #endif
565 if ((in_nrows > 0) & (np*4 > in_nrows))
566 np = in_nrows/4;
567 /* we'll be doing a row at a time */
568 for (i = 0; i < nmats; i++) {
569 mop[i].imx.nrows = 1;
570 if (!rmx_prepare(&mop[i].imx))
571 goto memerror;
572 if (mop[i].rmp != &mop[i].imx) {
573 mop[i].rmp->nrows = 1;
574 if (!rmx_prepare(mop[i].rmp))
575 goto memerror;
576 }
577 }
578 /* prep output row buffer(s) */
579 if (mop[nmats].preop.clen > 0) {
580 if (!split_input(&mop[nmats])) /* need separate buffer */
581 goto memerror;
582 mop[nmats].rmp->ncomp = mop[nmats].preop.clen /
583 mop[nmats].imx.ncomp;
584 }
585 mop[nmats].imx.nrows = 1;
586 if (!rmx_prepare(&mop[nmats].imx))
587 goto memerror;
588 if (mop[nmats].rmp != &mop[nmats].imx) {
589 mop[nmats].rmp->nrows = 1;
590 if (!rmx_prepare(mop[nmats].rmp))
591 goto memerror;
592 }
593 if (np <= 1) { /* single process return */
594 #ifdef getc_unlocked
595 for (i = 0; i < nmats; i++)
596 flockfile(mop[i].infp);
597 flockfile(stdout);
598 #endif
599 return(0);
600 }
601 fflush(stdout); /* flush header & spawn children */
602 nchildren = np + 1; /* extra child to sequence output */
603 cproc = (SUBPROC *)malloc(sizeof(SUBPROC)*nchildren);
604 if (!cproc)
605 goto memerror;
606 for (i = nchildren; i--; ) cproc[i] = sp_inactive;
607 cproc[nchildren-1].flags |= PF_FILT_OUT;
608 /* start each child from parent */
609 for (i = 0; i < nchildren; i++)
610 if ((rv = open_process(&cproc[i], NULL)) <= 0)
611 break; /* child breaks here */
612 if (rv < 0) {
613 perror("fork"); /* WTH? */
614 close_processes(cproc, i);
615 exit(1);
616 }
617 if (i != nchildren-1) { /* last child is sole reader */
618 int j = i;
619 while (j-- > 0) {
620 close(cproc[j].r);
621 cproc[j].r = -1;
622 }
623 }
624 if (rv > 0)
625 return(1); /* parent return value */
626
627 inchild = i; /* else set our child index */
628 while (i-- > 0) /* only parent writes siblings */
629 close(cproc[i].w);
630
631 i = nmats; /* close matrix streams (carefully) */
632 while (i-- > 0) {
633 if (mop[i].infp != stdin) {
634 close(fileno(mop[i].infp)); /* avoid lseek() */
635 fclose(mop[i].infp); /* ! pclose() */
636 }
637 mop[i].infp = NULL;
638 }
639 fpurge(stdin); /* discard previously buffered input */
640
641 if (inchild == nchildren-1)
642 return(-1); /* output process return value */
643
644 i = nmats; /* get matrix rows from parent */
645 while (i-- > 0) {
646 mop[i].infp = stdin;
647 mop[i].imx.dtype = DTrmx_native;
648 mop[i].imx.pflags &= ~RMF_SWAPIN;
649 }
650 #ifdef getc_unlocked
651 flockfile(stdin);
652 #endif
653 mop[nmats].rmp->dtype = DTrmx_native;
654 return(0); /* worker child return value */
655 memerror:
656 fputs("Out of memory in spawned_children()\n", stderr);
657 exit(1);
658 }
659
660 /* Run parental feeder loop */
661 int
662 parent_loop(void)
663 {
664 int i;
665
666 rmx_reset(&mop[nmats].imx); /* not touching output side */
667 if (mop[nmats].rmp != &mop[nmats].imx) {
668 rmx_free(mop[nmats].rmp);
669 mop[nmats].rmp = &mop[nmats].imx;
670 }
671 #ifdef getc_unlocked
672 for (i = 0; i < nmats; i++) /* we handle matrix inputs */
673 flockfile(mop[i].infp);
674 #endif
675 /* load & send rows to kids */
676 for (cur_row = 0; (in_nrows <= 0) | (cur_row < in_nrows); cur_row++) {
677 int wfd = cproc[cur_row % (nchildren-1)].w;
678 for (i = 0; i < nmats; i++)
679 if (!rmx_load_row(mop[i].imx.mtx, &mop[i].imx, mop[i].infp)) {
680 if (cur_row > in_nrows) /* unknown #input rows? */
681 break;
682 fprintf(stderr, "%s: load error at row %d\n",
683 mop[i].inspec, cur_row);
684 return(0);
685 }
686 if (i < nmats)
687 break;
688 for (i = 0; i < nmats; i++)
689 if (writebuf(wfd, mop[i].imx.mtx, rmx_array_size(&mop[i].imx))
690 != rmx_array_size(&mop[i].imx)) {
691 fprintf(stderr, "%s: write error at row %d\n",
692 mop[i].inspec, cur_row);
693 return(0);
694 }
695 }
696 i = close_processes(cproc, nchildren); /* collect family */
697 free(cproc); cproc = NULL; nchildren = 0;
698 if (i < 0) {
699 if (!nowarn)
700 fputs("Warning: lost child process\n", stderr);
701 return(1);
702 }
703 if (i > 0) {
704 fprintf(stderr, "Child exited with status %d\n", i);
705 return(0);
706 }
707 return(1); /* return success! */
708 }
709
710 /* Main operation loop, may be run in each child */
711 int
712 combine_input(void)
713 {
714 const int row0 = (inchild >= 0)*inchild;
715 const int rstep = nchildren ? nchildren-1 : 1;
716 ROPMAT *res = &mop[nmats];
717 int set_r, set_c;
718 RMATRIX *tmp = NULL;
719 int co_set;
720 int i;
721
722 if (mcat_last && !(tmp = rmx_alloc(1, res->imx.ncols, res->rmp->ncomp))) {
723 fputs("Out of buffer space in combine_input()\n", stderr);
724 return(0);
725 }
726 /* figure out what the user set */
727 co_set = fundefined("co");
728 if (!co_set)
729 co_set = -vardefined("co");
730 if (!co_set & (in_ncomp == 3) && vardefined("ro") &&
731 vardefined("go") && vardefined("bo")) {
732 scompile("co(p)=select(p,ro,go,bo)", NULL, 0);
733 co_set = 1;
734 }
735 if (co_set) { /* set if user wants, didn't set */
736 set_r = varlookup("r") != NULL && !vardefined("r");
737 set_c = varlookup("c") != NULL && !vardefined("c");
738 } else /* save a little time */
739 set_r = set_c = 0;
740 /* read/process row-by-row */
741 for (cur_row = row0; (in_nrows <= 0) | (cur_row < in_nrows); cur_row += rstep) {
742 RMATRIX *mres = NULL;
743 for (i = 0; i < nmats; i++)
744 if (!rmx_load_row(mop[i].imx.mtx, &mop[i].imx, mop[i].infp)) {
745 if (cur_row > in_nrows) /* unknown #input rows? */
746 break;
747 fprintf(stderr, "%s: load error at row %d\n",
748 mop[i].inspec, cur_row);
749 return(0);
750 }
751 if (i < nmats)
752 break;
753 for (i = 0; i < nmats; i++)
754 if (!apply_op(mop[i].rmp, &mop[i].imx, &mop[i].preop))
755 return(0);
756 if (set_r) varset("r", '=', cur_row);
757 for (cur_col = 0; cur_col < in_ncols; cur_col++) {
758 if (set_c) varset("c", '=', cur_col);
759 for (cur_chan = 0; cur_chan < in_ncomp; cur_chan++) {
760 const int ndx = cur_col*in_ncomp + cur_chan;
761 eclock++;
762 if (!co_set) { /* just summing elements? */
763 res->imx.mtx[ndx] = 0;
764 for (i = nmats; i--; )
765 res->imx.mtx[ndx] += mop[i].rmp->mtx[ndx];
766 } else if (co_set > 0) {
767 double dchan = cur_chan+1;
768 res->imx.mtx[ndx] = funvalue("co", 1, &dchan);
769 } else
770 res->imx.mtx[ndx] = varvalue("co");
771 }
772 } /* final conversions */
773 if (!mcat) {
774 if (!apply_op(res->rmp, &res->imx, &res->preop))
775 return(0);
776 } else if (mcat_last) {
777 if (!apply_op(tmp, &res->imx, &res->preop))
778 return(0);
779 mres = rmx_multiply(tmp, mcat);
780 if (!mres)
781 goto multerror;
782 if (!rmx_transfer_data(res->rmp, mres, 0))
783 return(0);
784 } else /* mcat && !mcat_last */ {
785 mres = rmx_multiply(&res->imx, mcat);
786 if (!mres)
787 goto multerror;
788 if (!apply_op(res->rmp, mres, &res->preop))
789 return(0);
790 }
791 rmx_free(mres); mres = NULL;
792 if (!rmx_write_data(res->rmp->mtx, res->rmp->ncomp,
793 res->rmp->ncols, res->rmp->dtype, stdout) ||
794 (inchild >= 0 && fflush(stdout) == EOF)) {
795 fprintf(stderr, "Conversion/write error at row %d\n",
796 cur_row);
797 return(0);
798 }
799 }
800 return(inchild >= 0 || fflush(stdout) != EOF);
801 multerror:
802 fputs("Unexpected matrix multiply error\n", stderr);
803 return(0);
804 }
805
806 /* Run output process loop when #processes > 1 */
807 int
808 output_loop(void)
809 {
810 const size_t row_size = rmx_array_size(mop[nmats].rmp);
811 int cur_child = 0;
812 int i = nmats;
813
814 while (i-- > 0) { /* free input buffers */
815 rmx_reset(&mop[i].imx);
816 if (mop[i].rmp != &mop[i].imx) {
817 rmx_free(mop[i].rmp);
818 mop[i].rmp = &mop[i].imx;
819 }
820 }
821 if (mop[nmats].rmp != &mop[nmats].imx) /* output is split? */
822 rmx_reset(&mop[nmats].imx);
823 #ifdef getc_unlocked
824 flockfile(stdout); /* we own this, now */
825 #endif
826 for ( ; ; ) { /* loop until no more */
827 ssize_t rv;
828 rv = readbuf(cproc[cur_child].r, mop[nmats].rmp->mtx, row_size);
829 if (!rv) /* out of rows? */
830 break;
831 if (rv != row_size) {
832 fputs("Read error\n", stderr);
833 return(0);
834 } /* do final conversion */
835 if (!rmx_write_data(mop[nmats].rmp->mtx, mop[nmats].rmp->ncomp,
836 mop[nmats].rmp->ncols, mop[nmats].rmp->dtype, stdout)) {
837 fputs("Conversion/write error\n", stderr);
838 return(0);
839 }
840 cur_child++;
841 cur_child *= (cur_child < inchild); /* loop over workers */
842 }
843 return(fflush(stdout) != EOF);
844 }
845
846 /* Check/convert floating-point arguments following this */
847 int
848 get_factors(double da[], int n, char *av[])
849 {
850 int ac;
851
852 for (ac = 0; ac < n && isflt(av[ac]); ac++)
853 da[ac] = atof(av[ac]);
854 return(ac);
855 }
856
857 /* Resize/reallocate the input array as requested */
858 void
859 resize_inparr(int n2alloc)
860 {
861 int i;
862
863 if (n2alloc == nall)
864 return;
865 for (i = nall; i-- > n2alloc; ) {
866 rmx_reset(&mop[i].imx);
867 if (mop[i].rmp != &mop[i].imx)
868 rmx_free(mop[i].rmp);
869 }
870 mop = (ROPMAT *)realloc(mop, n2alloc*sizeof(ROPMAT));
871 if (mop == NULL) {
872 fputs("Out of memory in resize_inparr()\n", stderr);
873 exit(1);
874 }
875 if (n2alloc > nall)
876 memset(mop+nall, 0, (n2alloc-nall)*sizeof(ROPMAT));
877 nall = n2alloc;
878 }
879
880 /* Load one or more matrices and operate on them, sending results to stdout */
881 int
882 main(int argc, char *argv[])
883 {
884
885 int outfmt = DTfromHeader;
886 const char *defCsym = NULL;
887 int echoheader = 1;
888 int stdin_used = 0;
889 int nproc = 1;
890 const char *mcat_spec = NULL;
891 int transpose_mcat = 0;
892 int n2comp = 0;
893 uby8 comp_ndx[128];
894 int i;
895 /* get starting input array */
896 mop = (ROPMAT *)calloc(nall=2, sizeof(ROPMAT));
897 /* get options and arguments */
898 for (i = 1; i < argc; i++)
899 if (argv[i][0] != '-' || !argv[i][1]) {
900 if (argv[i][0] == '-') {
901 if (stdin_used++) goto stdin_error;
902 mop[nmats].inspec = stdin_name;
903 } else
904 mop[nmats].inspec = argv[i];
905 if (!mop[nmats].preop.csym)
906 mop[nmats].preop.csym = defCsym;
907 if (++nmats >= nall)
908 resize_inparr(nmats + (nmats>>2) + 2);
909 } else {
910 int n = argc-1 - i;
911 switch (argv[i][1]) { /* get option */
912 case 'w':
913 nowarn = !nowarn;
914 break;
915 case 'h':
916 echoheader = !echoheader;
917 break;
918 case 'n':
919 nproc = atoi(argv[++i]);
920 if (nproc <= 0)
921 goto userr;
922 break;
923 case 'e':
924 if (!n) goto userr;
925 comp_ndx[n2comp++] = i++;
926 break;
927 case 'f':
928 switch (argv[i][2]) {
929 case '\0':
930 if (!n) goto userr;
931 comp_ndx[n2comp++] = i++;
932 break;
933 case 'd':
934 outfmt = DTdouble;
935 break;
936 case 'f':
937 outfmt = DTfloat;
938 break;
939 case 'a':
940 outfmt = DTascii;
941 break;
942 case 'c':
943 outfmt = DTrgbe;
944 break;
945 default:
946 goto userr;
947 }
948 break;
949 case 's':
950 if (n > MAXCOMP) n = MAXCOMP;
951 i += mop[nmats].preop.nsf =
952 get_factors(mop[nmats].preop.sca,
953 n, argv+i+1);
954 if (mop[nmats].preop.nsf <= 0) {
955 fprintf(stderr, "%s: -s missing arguments\n",
956 argv[0]);
957 goto userr;
958 }
959 break;
960 case 'C':
961 mcat_last = 0;
962 if (!n || isflt(argv[i+1]))
963 goto userr;
964 defCsym = mop[nmats].preop.csym = argv[++i];
965 mop[nmats].preop.clen = 0;
966 break;
967 case 'c':
968 mcat_last = 0;
969 if (n && !isflt(argv[i+1])) {
970 mop[nmats].preop.csym = argv[++i];
971 mop[nmats].preop.clen = 0;
972 break;
973 }
974 if (n > MAXCOMP*MAXCOMP) n = MAXCOMP*MAXCOMP;
975 i += mop[nmats].preop.clen =
976 get_factors(mop[nmats].preop.cmat,
977 n, argv+i+1);
978 if (mop[nmats].preop.clen <= 0) {
979 fprintf(stderr, "%s: -c missing arguments\n",
980 argv[0]);
981 goto userr;
982 }
983 mop[nmats].preop.csym = NULL;
984 break;
985 case 'm':
986 if (!n) goto userr;
987 mcat_last = 1;
988 transpose_mcat = (argv[i][2] == 't');
989 if (argv[++i][0] == '-' && !argv[i][1]) {
990 if (stdin_used++) goto stdin_error;
991 mcat_spec = stdin_name;
992 } else
993 mcat_spec = argv[i];
994 break;
995 default:
996 fprintf(stderr, "%s: unknown option '%s'\n",
997 argv[0], argv[i]);
998 goto userr;
999 }
1000 }
1001 if (!nmats) {
1002 fprintf(stderr, "%s: need at least one input matrix\n", argv[0]);
1003 goto userr;
1004 }
1005 resize_inparr(nmats+1); /* extra matrix at end for result */
1006 mop[nmats].inspec = "trailing_ops";
1007
1008 if (mcat_spec) { /* load final concatenation matrix? */
1009 mcat = rmx_load(mcat_spec);
1010 if (!mcat) {
1011 fprintf(stderr, "%s: error loading concatenation matrix: %s\n",
1012 argv[0], mcat_spec);
1013 return(1);
1014 }
1015 if (transpose_mcat && !rmx_transpose(mcat)) {
1016 fprintf(stderr, "%s: error transposing concatenation matrix: %s\n",
1017 argv[0], mcat_spec);
1018 return(1);
1019 }
1020 }
1021 /* get/check inputs, set constants */
1022 if (!initialize(&mop[nmats].imx))
1023 return(1);
1024
1025 for (i = 0; i < n2comp; i++) /* user .cal files and expressions */
1026 if (argv[comp_ndx[i]][1] == 'f') {
1027 char *fpath = getpath(argv[comp_ndx[i]+1],
1028 getrlibpath(), 0);
1029 if (fpath == NULL) {
1030 fprintf(stderr, "%s: cannot find file '%s'\n",
1031 argv[0], argv[comp_ndx[i]+1]);
1032 return(1);
1033 }
1034 fcompile(fpath);
1035 } else /* (argv[comp_ndx[i]][1] == 'e') */
1036 scompile(argv[comp_ndx[i]+1], NULL, 0);
1037
1038 /* get trailing color transform */
1039 if (!get_component_xfm(&mop[nmats]))
1040 return(1);
1041 /* adjust output dimensions and #components */
1042 if (mcat) {
1043 if (mop[nmats].imx.ncols != mcat->nrows) {
1044 fprintf(stderr,
1045 "%s: number of input columns does not match number of rows in '%s'\n",
1046 argv[0], mcat_spec);
1047 return(1);
1048 }
1049 if (mcat->ncomp != (mcat_last ? mop[nmats].rmp->ncomp : mop[nmats].imx.ncomp)) {
1050 fprintf(stderr,
1051 "%s: number of components does not match those in '%s'\n",
1052 argv[0], mcat_spec);
1053 return(1);
1054 }
1055 if (!split_input(&mop[nmats]))
1056 return(1);
1057 mop[nmats].rmp->ncols = mcat->ncols;
1058 }
1059 #if DTrmx_native==DTfloat
1060 if (outfmt == DTdouble)
1061 fprintf(stderr, "%s: warning - writing float result as double\n", argv[0]);
1062 #endif
1063 newheader("RADIANCE", stdout); /* write output header */
1064 if (echoheader)
1065 output_headinfo(stdout);
1066 printargs(argc, argv, stdout);
1067 fputnow(stdout);
1068 mop[nmats].rmp->dtype = rmx_write_header(mop[nmats].rmp, outfmt, stdout);
1069 if (!mop[nmats].rmp->dtype) {
1070 fprintf(stderr, "%s: unsupported output format\n", argv[0]);
1071 return(1);
1072 }
1073 doptimize(1); /* optimize definitions */
1074 i = spawned_children(nproc); /* create multiple processes if requested */
1075 if (i > 0) /* running in parent process? */
1076 return(parent_loop() ? 0 : 1);
1077 if (i < 0) /* running in output process? */
1078 return(output_loop() ? 0 : 1);
1079 /* else we are a worker process */
1080 return(combine_input() ? 0 : 1);
1081 stdin_error:
1082 fprintf(stderr, "%s: %s used for more than one input\n",
1083 argv[0], stdin_name);
1084 return(1);
1085 userr:
1086 fprintf(stderr,
1087 "Usage: %s [-h][-f{adfc}][-n nproc][-e expr][-f file][-s sf .. | -c ce ..] m1 .. -m mcat > mres\n",
1088 argv[0]);
1089 return(1);
1090 }