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root/radiance/ray/src/util/rtcontrib.c
Revision: 1.62
Committed: Wed Apr 6 00:39:07 2011 UTC (13 years ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.61: +8 -9 lines
Log Message: 
Minor adjustments to last change

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.62 static const char RCSid[] = "$Id: rtcontrib.c,v 1.61 2011/04/04 22:17:35 greg Exp $";
3 greg 1.1 #endif
4     /*
5     * Gather rtrace output to compute contributions from particular sources
6     */
7    
8 greg 1.4 #include "standard.h"
9 greg 1.1 #include <ctype.h>
10 greg 1.7 #include <signal.h>
11 greg 1.1 #include "platform.h"
12     #include "rtprocess.h"
13     #include "selcall.h"
14     #include "color.h"
15     #include "resolu.h"
16     #include "lookup.h"
17     #include "calcomp.h"
18    
19 greg 1.19 #ifndef MAXMODLIST
20 greg 1.1 #define MAXMODLIST 1024 /* maximum modifiers we'll track */
21 greg 1.19 #endif
22 greg 1.1
23 greg 1.58 size_t treebufsiz = BUFSIZ; /* current tree buffer size */
24 greg 1.1
25 greg 1.2 typedef double DCOLOR[3]; /* double-precision color */
26    
27 greg 1.1 /*
28 greg 1.31 * The MODCONT structure is used to accumulate ray contributions
29 greg 1.1 * for a particular modifier, which may be subdivided into bins
30 greg 1.45 * if binv evaluates > 0. If outspec contains a %s in it, this will
31 greg 1.1 * be replaced with the modifier name. If outspec contains a %d in it,
32     * this will be used to create one output file per bin, otherwise all bins
33     * will be written to the same file, in order. If the global outfmt
34     * is 'c', then a 4-byte RGBE pixel will be output for each bin value
35     * and the file will conform to a RADIANCE image if xres & yres are set.
36     */
37     typedef struct {
38     const char *outspec; /* output file specification */
39     const char *modname; /* modifier name */
40     EPNODE *binv; /* bin value expression */
41     int nbins; /* number of accumulation bins */
42 greg 1.2 DCOLOR cbin[1]; /* contribution bins (extends struct) */
43 greg 1.1 } MODCONT; /* modifier contribution */
44    
45     static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); }
46    
47     LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */
48    
49 greg 1.31 /*
50     * The STREAMOUT structure holds an open FILE pointer and a count of
51 greg 1.45 * the number of RGB triplets per record, or 0 if unknown.
52 greg 1.31 */
53     typedef struct {
54     FILE *ofp; /* output file pointer */
55 greg 1.45 int outpipe; /* output is to a pipe */
56 greg 1.31 int reclen; /* triplets/record */
57 greg 1.45 int xr, yr; /* output resolution for picture */
58 greg 1.31 } STREAMOUT;
59    
60     /* close output stream and free record */
61     static void
62     closestream(void *p)
63     {
64     STREAMOUT *sop = (STREAMOUT *)p;
65 greg 1.33 int status;
66 greg 1.45 if (sop->outpipe)
67 greg 1.33 status = pclose(sop->ofp);
68 greg 1.31 else
69 greg 1.33 status = fclose(sop->ofp);
70     if (status)
71     error(SYSTEM, "error closing output stream");
72 greg 1.31 free(p);
73     }
74 greg 1.1
75 greg 1.31 LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */
76 greg 1.1
77 greg 1.14 #define OF_MODIFIER 01
78     #define OF_BIN 02
79    
80 greg 1.32 STREAMOUT *getostream(const char *ospec, const char *mname, int bn, int noopen);
81 greg 1.14 int ofname(char *oname, const char *ospec, const char *mname, int bn);
82     void printheader(FILE *fout, const char *info);
83 greg 1.45 void printresolu(FILE *fout, int xr, int yr);
84 greg 1.1
85     /*
86     * The rcont structure is used to manage i/o with a particular
87     * rtrace child process. Input is passed unchanged from stdin,
88     * and output is processed in input order and accumulated according
89     * to the corresponding modifier and bin number.
90     */
91     struct rtproc {
92     struct rtproc *next; /* next in list of processes */
93     SUBPROC pd; /* rtrace pipe descriptors */
94 greg 1.2 unsigned long raynum; /* ray number for this tree */
95 greg 1.58 size_t bsiz; /* ray tree buffer length */
96 greg 1.2 char *buf; /* ray tree buffer */
97 greg 1.58 size_t nbr; /* number of bytes from rtrace */
98 greg 1.5 }; /* rtrace process buffer */
99 greg 1.1
100     /* rtrace command and defaults */
101 greg 1.18 char *rtargv[256+2*MAXMODLIST] = { "rtrace",
102 greg 1.51 "-dj", ".9", "-dr", "3",
103 greg 1.42 "-ab", "1", "-ad", "350", };
104 greg 1.40
105 greg 1.13 int rtargc = 9;
106 greg 1.1 /* overriding rtrace options */
107 greg 1.40 char *myrtopts[] = { "-h-", "-x", "1", "-y", "0",
108 greg 1.6 "-dt", "0", "-as", "0", "-aa", "0", NULL };
109 greg 1.1
110 greg 1.62 #define RTCOEFF "-o~~~TmWdp" /* compute coefficients only */
111     #define RTCONTRIB "-o~~~TmVdp" /* compute ray contributions */
112 greg 1.40
113 greg 1.1 struct rtproc rt0; /* head of rtrace process list */
114    
115     struct rtproc *rt_unproc = NULL; /* unprocessed ray trees */
116    
117 greg 1.44 #define PERSIST_NONE 0 /* no persist file */
118     #define PERSIST_SINGLE 1 /* user set -P persist */
119     #define PERSIST_PARALL 2 /* user set -PP persist */
120     #define PERSIST_OURS 3 /* -PP persist belongs to us */
121     int persist_state = PERSIST_NONE; /* persist file state */
122     char persistfn[] = "pfXXXXXX"; /* our persist file name, if set */
123 greg 1.1
124     int gargc; /* global argc */
125     char **gargv; /* global argv */
126     #define progname gargv[0]
127    
128     char *octree; /* global octree argument */
129    
130     int inpfmt = 'a'; /* input format */
131     int outfmt = 'a'; /* output format */
132    
133     int header = 1; /* output header? */
134 greg 1.35 int force_open = 0; /* truncate existing output? */
135 greg 1.46 int recover = 0; /* recover previous output? */
136 greg 1.49 int accumulate = 1; /* input rays per output record */
137 greg 1.1 int xres = 0; /* horiz. output resolution */
138     int yres = 0; /* vert. output resolution */
139    
140 greg 1.49 int account; /* current accumulation count */
141 greg 1.14 unsigned long raysleft; /* number of rays left to trace */
142 greg 1.1 long waitflush; /* how long until next flush */
143    
144     unsigned long lastray = 0; /* last ray number sent */
145     unsigned long lastdone = 0; /* last ray processed */
146    
147 greg 1.2 int using_stdout = 0; /* are we using stdout? */
148    
149 greg 1.1 const char *modname[MAXMODLIST]; /* ordered modifier name list */
150     int nmods = 0; /* number of modifiers */
151    
152 greg 1.29 #define queue_length() (lastray - lastdone)
153    
154 greg 1.31 MODCONT *growmodifier(MODCONT *mp, int nb);
155     MODCONT *addmodifier(char *modn, char *outf, char *binv, int bincnt);
156     void addmodfile(char *fname, char *outf, char *binv, int bincnt);
157 greg 1.1
158 greg 1.5 void init(int np);
159 greg 1.1 int done_rprocs(struct rtproc *rtp);
160 greg 1.45 void reload_output(void);
161 greg 1.14 void recover_output(FILE *fin);
162     void trace_contribs(FILE *fin);
163 greg 1.1 struct rtproc *wait_rproc(void);
164     struct rtproc *get_rproc(void);
165 greg 1.3 void queue_raytree(struct rtproc *rtp);
166     void process_queue(void);
167 greg 1.1
168 greg 1.14 void put_contrib(const DCOLOR cnt, FILE *fout);
169 greg 1.2 void add_contrib(const char *modn);
170 greg 1.49 void done_contrib(int navg);
171 greg 1.1
172 greg 1.29 /* return number of open rtrace processes */
173     static int
174     nrtprocs(void)
175     {
176     int nrtp = 0;
177     struct rtproc *rtp;
178    
179     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
180     nrtp += rtp->pd.running;
181     return(nrtp);
182     }
183    
184 greg 1.1 /* set input/output format */
185     static void
186     setformat(const char *fmt)
187     {
188     switch (fmt[0]) {
189     case 'f':
190     case 'd':
191 greg 1.10 SET_FILE_BINARY(stdin);
192     /* fall through */
193     case 'a':
194 greg 1.1 inpfmt = fmt[0];
195     break;
196     default:
197     goto fmterr;
198     }
199     switch (fmt[1]) {
200     case '\0':
201     outfmt = inpfmt;
202     return;
203     case 'a':
204     case 'f':
205     case 'd':
206     case 'c':
207     outfmt = fmt[1];
208     break;
209     default:
210     goto fmterr;
211     }
212     if (!fmt[2])
213     return;
214     fmterr:
215     sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
216     error(USER, errmsg);
217     }
218    
219     /* gather rays from rtrace and output contributions */
220     int
221     main(int argc, char *argv[])
222     {
223 greg 1.40 int contrib = 0;
224 greg 1.1 int nprocs = 1;
225     char *curout = NULL;
226     char *binval = NULL;
227 greg 1.31 int bincnt = 0;
228 greg 1.5 char fmt[8];
229 greg 1.2 int i, j;
230 greg 1.25 /* need at least one argument */
231     if (argc < 2) {
232     fprintf(stderr,
233 greg 1.40 "Usage: %s [-n nprocs][-V][-r][-e expr][-f source][-o ospec][-b binv] {-m mod | -M file} [rtrace options] octree\n",
234 greg 1.25 argv[0]);
235     exit(1);
236     }
237 greg 1.2 /* global program name */
238 greg 1.1 gargv = argv;
239 greg 1.11 /* initialize calcomp routines */
240 greg 1.1 esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
241     esupport &= ~(E_OUTCHAN);
242 greg 1.11 varset("PI", ':', PI);
243 greg 1.1 /* get our options */
244 greg 1.2 for (i = 1; i < argc-1; i++) {
245     /* expand arguments */
246     while ((j = expandarg(&argc, &argv, i)) > 0)
247     ;
248     if (j < 0) {
249 greg 1.52 fprintf(stderr, "%s: cannot expand '%s'\n",
250 greg 1.2 argv[0], argv[i]);
251     exit(1);
252     }
253     if (argv[i][0] == '-')
254     switch (argv[i][1]) {
255     case 'n': /* number of processes */
256 greg 1.21 if (argv[i][2] || i >= argc-2) break;
257 greg 1.2 nprocs = atoi(argv[++i]);
258     if (nprocs <= 0)
259     error(USER, "illegal number of processes");
260     continue;
261 greg 1.40 case 'V': /* output contributions */
262     switch (argv[i][2]) {
263     case '\0':
264     contrib = !contrib;
265     continue;
266     case '+': case '1':
267     case 'T': case 't':
268     case 'Y': case 'y':
269     contrib = 1;
270     continue;
271     case '-': case '0':
272     case 'F': case 'f':
273     case 'N': case 'n':
274     contrib = 0;
275     continue;
276     }
277     break;
278 greg 1.49 case 'c': /* input rays per output */
279     if (argv[i][2] || i >= argc-2) break;
280     accumulate = atoi(argv[++i]);
281     continue;
282 greg 1.40 case 'r': /* recover output */
283     if (argv[i][2]) break;
284 greg 1.46 recover = 1;
285 greg 1.40 continue;
286 greg 1.2 case 'h': /* output header? */
287     switch (argv[i][2]) {
288     case '\0':
289     header = !header;
290     continue;
291 greg 1.3 case '+': case '1':
292     case 'T': case 't':
293     case 'Y': case 'y':
294 greg 1.2 header = 1;
295     continue;
296 greg 1.3 case '-': case '0':
297     case 'F': case 'f':
298     case 'N': case 'n':
299 greg 1.2 header = 0;
300     continue;
301     }
302     break;
303 greg 1.35 case 'f': /* file or force or format */
304 greg 1.2 if (!argv[i][2]) {
305 greg 1.9 char *fpath;
306 greg 1.21 if (i >= argc-2) break;
307 greg 1.9 fpath = getpath(argv[++i],
308     getrlibpath(), R_OK);
309     if (fpath == NULL) {
310     sprintf(errmsg,
311     "cannot find file '%s'",
312     argv[i]);
313     error(USER, errmsg);
314     }
315     fcompile(fpath);
316 greg 1.2 continue;
317     }
318 greg 1.35 if (argv[i][2] == 'o') {
319 greg 1.46 force_open = 1;
320 greg 1.35 continue;
321     }
322 greg 1.2 setformat(argv[i]+2);
323     continue;
324     case 'e': /* expression */
325 greg 1.21 if (argv[i][2] || i >= argc-2) break;
326 greg 1.2 scompile(argv[++i], NULL, 0);
327 greg 1.1 continue;
328 greg 1.2 case 'o': /* output file spec. */
329 greg 1.21 if (argv[i][2] || i >= argc-2) break;
330 greg 1.2 curout = argv[++i];
331 greg 1.1 continue;
332 greg 1.2 case 'x': /* horiz. output resolution */
333 greg 1.21 if (argv[i][2] || i >= argc-2) break;
334 greg 1.2 xres = atoi(argv[++i]);
335 greg 1.1 continue;
336 greg 1.2 case 'y': /* vert. output resolution */
337 greg 1.21 if (argv[i][2] || i >= argc-2) break;
338 greg 1.2 yres = atoi(argv[++i]);
339     continue;
340 greg 1.31 case 'b': /* bin expression/count */
341     if (i >= argc-2) break;
342     if (argv[i][2] == 'n') {
343 greg 1.54 bincnt = (int)(eval(argv[++i]) + .5);
344 greg 1.31 continue;
345     }
346     if (argv[i][2]) break;
347 greg 1.2 binval = argv[++i];
348     continue;
349     case 'm': /* modifier name */
350 greg 1.21 if (argv[i][2] || i >= argc-2) break;
351 greg 1.2 rtargv[rtargc++] = "-ti";
352     rtargv[rtargc++] = argv[++i];
353 greg 1.31 addmodifier(argv[i], curout, binval, bincnt);
354 greg 1.1 continue;
355 greg 1.17 case 'M': /* modifier file */
356 greg 1.21 if (argv[i][2] || i >= argc-2) break;
357 greg 1.19 rtargv[rtargc++] = "-tI";
358     rtargv[rtargc++] = argv[++i];
359 greg 1.31 addmodfile(argv[i], curout, binval, bincnt);
360 greg 1.17 continue;
361 greg 1.39 case 'P': /* persist file */
362 greg 1.44 if (i >= argc-2) break;
363     persist_state = (argv[i][2] == 'P') ?
364     PERSIST_PARALL : PERSIST_SINGLE;
365     rtargv[rtargc++] = argv[i];
366     rtargv[rtargc++] = argv[++i];
367     continue;
368 greg 1.1 }
369 greg 1.2 rtargv[rtargc++] = argv[i]; /* assume rtrace option */
370 greg 1.1 }
371 greg 1.49 if (accumulate <= 0) /* no output flushing for single record */
372 greg 1.45 xres = yres = 0;
373 greg 1.2 /* set global argument list */
374     gargc = argc; gargv = argv;
375 greg 1.1 /* add "mandatory" rtrace settings */
376 greg 1.2 for (j = 0; myrtopts[j] != NULL; j++)
377     rtargv[rtargc++] = myrtopts[j];
378 greg 1.40 rtargv[rtargc++] = contrib ? RTCONTRIB : RTCOEFF;
379 greg 1.2 /* just asking for defaults? */
380     if (!strcmp(argv[i], "-defaults")) {
381 greg 1.56 char nps[8], sxres[16], syres[16];
382 greg 1.1 char *rtpath;
383 greg 1.49 printf("-c %-5d\t\t\t# accumulated rays per record\n",
384     accumulate);
385 greg 1.40 printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
386     contrib ? "contributions" : "coefficients");
387 greg 1.1 fflush(stdout); /* report OUR options */
388 greg 1.56 rtargv[rtargc++] = "-n";
389     sprintf(nps, "%d", nprocs);
390     rtargv[rtargc++] = nps;
391 greg 1.1 rtargv[rtargc++] = header ? "-h+" : "-h-";
392     sprintf(fmt, "-f%c%c", inpfmt, outfmt);
393     rtargv[rtargc++] = fmt;
394     rtargv[rtargc++] = "-x";
395     sprintf(sxres, "%d", xres);
396     rtargv[rtargc++] = sxres;
397     rtargv[rtargc++] = "-y";
398     sprintf(syres, "%d", yres);
399     rtargv[rtargc++] = syres;
400     rtargv[rtargc++] = "-defaults";
401     rtargv[rtargc] = NULL;
402     rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
403     if (rtpath == NULL) {
404     eputs(rtargv[0]);
405     eputs(": command not found\n");
406     exit(1);
407     }
408     execv(rtpath, rtargv);
409     perror(rtpath); /* execv() should not return */
410     exit(1);
411 greg 1.5 }
412     if (nprocs > 1) { /* add persist file if parallel */
413 greg 1.44 if (persist_state == PERSIST_SINGLE)
414     error(USER, "use -PP option for multiple processes");
415     if (persist_state == PERSIST_NONE) {
416     rtargv[rtargc++] = "-PP";
417     rtargv[rtargc++] = mktemp(persistfn);
418     persist_state = PERSIST_OURS;
419     }
420 greg 1.2 }
421 greg 1.1 /* add format string */
422     sprintf(fmt, "-f%cf", inpfmt);
423     rtargv[rtargc++] = fmt;
424     /* octree argument is last */
425 greg 1.2 if (i <= 0 || i != argc-1 || argv[i][0] == '-')
426     error(USER, "missing octree argument");
427     rtargv[rtargc++] = octree = argv[i];
428 greg 1.1 rtargv[rtargc] = NULL;
429 greg 1.46 /* start rtrace & recover if requested */
430 greg 1.1 init(nprocs);
431 greg 1.46 /* compute contributions */
432     trace_contribs(stdin);
433     /* clean up */
434 greg 1.1 quit(0);
435     }
436    
437 schorsch 1.26 #ifndef SIGALRM
438     #define SIGALRM SIGTERM
439     #endif
440 greg 1.1 /* kill persistent rtrace process */
441     static void
442     killpersist(void)
443     {
444     FILE *fp = fopen(persistfn, "r");
445 schorsch 1.26 RT_PID pid;
446 greg 1.1
447     if (fp == NULL)
448     return;
449     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
450     unlink(persistfn);
451     fclose(fp);
452     }
453    
454     /* close rtrace processes and clean up */
455     int
456     done_rprocs(struct rtproc *rtp)
457     {
458     int st0, st1 = 0;
459    
460     if (rtp->next != NULL) { /* close last opened first! */
461     st1 = done_rprocs(rtp->next);
462     free((void *)rtp->next);
463     rtp->next = NULL;
464     }
465     st0 = close_process(&rtp->pd);
466     if (st0 < 0)
467     error(WARNING, "unknown return status from rtrace process");
468     else if (st0 > 0)
469     return(st0);
470     return(st1);
471     }
472    
473     /* exit with status */
474     void
475     quit(int status)
476     {
477     int rtstat;
478    
479 greg 1.45 if (persist_state == PERSIST_OURS) /* terminate waiting rtrace */
480 greg 1.1 killpersist();
481     /* clean up rtrace process(es) */
482     rtstat = done_rprocs(&rt0);
483     if (status == 0)
484     status = rtstat;
485     exit(status); /* flushes all output streams */
486     }
487    
488 greg 1.5 /* start rtrace processes and initialize */
489 greg 1.1 void
490     init(int np)
491     {
492     struct rtproc *rtp;
493     int i;
494     int maxbytes;
495 greg 1.2 /* make sure we have something to do */
496     if (!nmods)
497     error(USER, "No modifiers specified");
498 greg 1.1 /* assign ray variables */
499     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
500     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
501     /* set up signal handling */
502 greg 1.3 signal(SIGINT, quit);
503     #ifdef SIGHUP
504     signal(SIGHUP, quit);
505     #endif
506     #ifdef SIGTERM
507     signal(SIGTERM, quit);
508     #endif
509     #ifdef SIGPIPE
510 greg 1.1 signal(SIGPIPE, quit);
511     #endif
512     rtp = &rt0; /* start rtrace process(es) */
513     for (i = 0; i++ < np; ) {
514     errno = 0;
515     maxbytes = open_process(&rtp->pd, rtargv);
516     if (maxbytes == 0) {
517     eputs(rtargv[0]);
518     eputs(": command not found\n");
519     exit(1);
520     }
521     if (maxbytes < 0)
522     error(SYSTEM, "cannot start rtrace process");
523     if (maxbytes > treebufsiz)
524     treebufsiz = maxbytes;
525 greg 1.2 rtp->raynum = 0;
526 greg 1.1 rtp->bsiz = 0;
527     rtp->buf = NULL;
528 greg 1.2 rtp->nbr = 0;
529 greg 1.1 if (i == np) /* last process? */
530     break;
531     if (i == 1)
532     sleep(2); /* wait for persist file */
533     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
534     if (rtp->next == NULL)
535     error(SYSTEM, "out of memory in init");
536     rtp = rtp->next;
537     }
538     rtp->next = NULL; /* terminate list */
539     if (yres > 0) {
540     if (xres > 0)
541 greg 1.14 raysleft = (unsigned long)xres*yres;
542 greg 1.1 else
543     raysleft = yres;
544     } else
545     raysleft = 0;
546 greg 1.49 if ((account = accumulate) > 0)
547     raysleft *= accumulate;
548 greg 1.57 waitflush = (yres > 0) & (xres > 1) ? 0 : xres;
549 greg 1.46 if (!recover)
550     return;
551     /* recover previous values */
552 greg 1.49 if (accumulate <= 0)
553 greg 1.46 reload_output();
554     else
555     recover_output(stdin);
556 greg 1.1 }
557    
558 greg 1.31 /* grow modifier to accommodate more bins */
559     MODCONT *
560     growmodifier(MODCONT *mp, int nb)
561     {
562     if (nb <= mp->nbins)
563     return mp;
564     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
565     if (mp == NULL)
566     error(SYSTEM, "out of memory in growmodifier");
567     memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
568     mp->nbins = nb;
569     return mp;
570     }
571    
572 greg 1.1 /* add modifier to our list to track */
573     MODCONT *
574 greg 1.31 addmodifier(char *modn, char *outf, char *binv, int bincnt)
575 greg 1.1 {
576     LUENT *lep = lu_find(&modconttab, modn);
577     MODCONT *mp;
578 greg 1.32 int i;
579 greg 1.1
580     if (lep->data != NULL) {
581     sprintf(errmsg, "duplicate modifier '%s'", modn);
582     error(USER, errmsg);
583     }
584     if (nmods >= MAXMODLIST)
585 greg 1.54 error(INTERNAL, "too many modifiers");
586 greg 1.1 modname[nmods++] = modn; /* XXX assumes static string */
587     lep->key = modn; /* XXX assumes static string */
588     mp = (MODCONT *)malloc(sizeof(MODCONT));
589     if (mp == NULL)
590     error(SYSTEM, "out of memory in addmodifier");
591     mp->outspec = outf; /* XXX assumes static string */
592     mp->modname = modn; /* XXX assumes static string */
593 greg 1.54 if (binv == NULL)
594     binv = "0"; /* use single bin if unspecified */
595     mp->binv = eparse(binv);
596     if (mp->binv->type == NUM) { /* check value if constant */
597     bincnt = (int)(evalue(mp->binv) + 1.5);
598     if (bincnt != 1) {
599     sprintf(errmsg, "illegal non-zero constant for bin (%s)",
600     binv);
601     error(USER, errmsg);
602     }
603     }
604     mp->nbins = 1; /* initialize results holder */
605 greg 1.1 setcolor(mp->cbin[0], 0., 0., 0.);
606 greg 1.54 if (bincnt > 1)
607 greg 1.31 mp = growmodifier(mp, bincnt);
608 greg 1.32 lep->data = (char *)mp;
609     /* allocate output streams */
610 greg 1.45 for (i = bincnt; i-- > 0; )
611 greg 1.32 getostream(mp->outspec, mp->modname, i, 1);
612 greg 1.1 return mp;
613     }
614    
615 greg 1.17 /* add modifiers from a file list */
616     void
617 greg 1.31 addmodfile(char *fname, char *outf, char *binv, int bincnt)
618 greg 1.17 {
619     char *mname[MAXMODLIST];
620     int i;
621 greg 1.20 /* find the file & store strings */
622     if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) {
623     sprintf(errmsg, "cannot find modifier file '%s'", fname);
624     error(SYSTEM, errmsg);
625     }
626 greg 1.17 for (i = 0; mname[i]; i++) /* add each one */
627 greg 1.31 addmodifier(mname[i], outf, binv, bincnt);
628 greg 1.17 }
629    
630 greg 1.1 /* put string to stderr */
631     void
632     eputs(char *s)
633     {
634     static int midline = 0;
635    
636     if (!*s) return;
637     if (!midline) {
638     fputs(progname, stderr);
639     fputs(": ", stderr);
640     }
641     fputs(s, stderr);
642     midline = s[strlen(s)-1] != '\n';
643     }
644    
645 greg 1.14 /* construct output file name and return flags whether modifier/bin present */
646     int
647     ofname(char *oname, const char *ospec, const char *mname, int bn)
648     {
649     const char *mnp = NULL;
650     const char *bnp = NULL;
651     const char *cp;
652    
653     if (ospec == NULL)
654     return -1;
655     for (cp = ospec; *cp; cp++) /* check format position(s) */
656     if (*cp == '%') {
657     do
658     ++cp;
659     while (isdigit(*cp));
660     switch (*cp) {
661     case '%':
662     break;
663     case 's':
664     if (mnp != NULL)
665     return -1;
666     mnp = cp;
667     break;
668     case 'd':
669 greg 1.55 case 'i':
670     case 'o':
671     case 'x':
672     case 'X':
673 greg 1.14 if (bnp != NULL)
674     return -1;
675     bnp = cp;
676     break;
677     default:
678     return -1;
679     }
680     }
681     if (mnp != NULL) { /* create file name */
682     if (bnp != NULL) {
683     if (bnp > mnp)
684     sprintf(oname, ospec, mname, bn);
685     else
686     sprintf(oname, ospec, bn, mname);
687     return OF_MODIFIER|OF_BIN;
688     }
689     sprintf(oname, ospec, mname);
690     return OF_MODIFIER;
691     }
692     if (bnp != NULL) {
693     sprintf(oname, ospec, bn);
694     return OF_BIN;
695     }
696     strcpy(oname, ospec);
697     return 0;
698     }
699    
700 greg 1.1 /* write header to the given output stream */
701     void
702 greg 1.14 printheader(FILE *fout, const char *info)
703 greg 1.1 {
704     extern char VersionID[];
705     FILE *fin = fopen(octree, "r");
706    
707     if (fin == NULL)
708     quit(1);
709 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
710 greg 1.1 fclose(fin);
711     printargs(gargc-1, gargv, fout); /* add our command */
712     fprintf(fout, "SOFTWARE= %s\n", VersionID);
713     fputnow(fout);
714 greg 1.14 if (info != NULL) /* add extra info if given */
715     fputs(info, fout);
716 greg 1.1 switch (outfmt) { /* add output format */
717     case 'a':
718     fputformat("ascii", fout);
719     break;
720     case 'f':
721     fputformat("float", fout);
722     break;
723     case 'd':
724     fputformat("double", fout);
725     break;
726     case 'c':
727     fputformat(COLRFMT, fout);
728     break;
729     }
730     fputc('\n', fout);
731 greg 1.30 }
732    
733     /* write resolution string to given output stream */
734     void
735 greg 1.45 printresolu(FILE *fout, int xr, int yr)
736 greg 1.30 {
737 greg 1.45 if ((xr > 0) & (yr > 0)) /* resolution string */
738     fprtresolu(xr, yr, fout);
739 greg 1.1 }
740    
741 greg 1.32 /* Get output stream pointer (open and write header if new and noopen==0) */
742 greg 1.31 STREAMOUT *
743 greg 1.32 getostream(const char *ospec, const char *mname, int bn, int noopen)
744 greg 1.31 {
745 greg 1.45 static const DCOLOR nocontrib = BLKCOLOR;
746 greg 1.31 static STREAMOUT stdos;
747     int ofl;
748     char oname[1024];
749     LUENT *lep;
750     STREAMOUT *sop;
751 greg 1.1
752     if (ospec == NULL) { /* use stdout? */
753 greg 1.32 if (!noopen && !using_stdout) {
754 greg 1.10 if (outfmt != 'a')
755     SET_FILE_BINARY(stdout);
756     if (header)
757 greg 1.14 printheader(stdout, NULL);
758 greg 1.45 printresolu(stdout, xres, yres);
759 greg 1.57 if (waitflush > 0)
760     fflush(stdout);
761 greg 1.45 stdos.xr = xres; stdos.yr = yres;
762 greg 1.31 using_stdout = 1;
763 greg 1.10 }
764 greg 1.31 stdos.ofp = stdout;
765 greg 1.32 stdos.reclen += noopen;
766 greg 1.31 return &stdos;
767 greg 1.1 }
768 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
769     if (ofl < 0) {
770     sprintf(errmsg, "bad output format '%s'", ospec);
771     error(USER, errmsg);
772     }
773     lep = lu_find(&ofiletab, oname); /* look it up */
774 greg 1.1 if (lep->key == NULL) /* new entry */
775 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
776 greg 1.31 sop = (STREAMOUT *)lep->data;
777     if (sop == NULL) { /* allocate stream */
778     sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
779     if (sop == NULL)
780     error(SYSTEM, "out of memory in getostream");
781 greg 1.45 sop->outpipe = oname[0] == '!';
782     sop->reclen = 0;
783 greg 1.32 sop->ofp = NULL; /* open iff noopen==0 */
784 greg 1.45 sop->xr = xres; sop->yr = yres;
785 greg 1.31 lep->data = (char *)sop;
786 greg 1.46 if (!sop->outpipe & !force_open & !recover &&
787     access(oname, F_OK) == 0) {
788 greg 1.45 errno = EEXIST; /* file exists */
789     goto openerr;
790     }
791 greg 1.31 }
792 greg 1.32 if (!noopen && sop->ofp == NULL) { /* open output stream */
793 greg 1.34 long i;
794 greg 1.14 if (oname[0] == '!') /* output to command */
795 greg 1.31 sop->ofp = popen(oname+1, "w");
796 greg 1.45 else /* else open file */
797 greg 1.31 sop->ofp = fopen(oname, "w");
798 greg 1.45 if (sop->ofp == NULL)
799     goto openerr;
800 greg 1.10 if (outfmt != 'a')
801 greg 1.31 SET_FILE_BINARY(sop->ofp);
802 greg 1.14 if (header) {
803     char info[512];
804     char *cp = info;
805 greg 1.32 if (ofl & OF_MODIFIER || sop->reclen == 1) {
806 greg 1.30 sprintf(cp, "MODIFIER=%s\n", mname);
807     while (*cp) ++cp;
808     }
809 greg 1.14 if (ofl & OF_BIN) {
810     sprintf(cp, "BIN=%d\n", bn);
811     while (*cp) ++cp;
812     }
813     *cp = '\0';
814 greg 1.31 printheader(sop->ofp, info);
815 greg 1.14 }
816 greg 1.49 if (accumulate > 0) { /* global resolution */
817 greg 1.47 sop->xr = xres; sop->yr = yres;
818     }
819 greg 1.45 printresolu(sop->ofp, sop->xr, sop->yr);
820 greg 1.2 /* play catch-up */
821 greg 1.49 for (i = accumulate > 0 ? lastdone/accumulate : 0; i--; ) {
822 greg 1.45 int j = sop->reclen;
823     if (j <= 0) j = 1;
824     while (j--)
825     put_contrib(nocontrib, sop->ofp);
826 greg 1.2 if (outfmt == 'a')
827 greg 1.31 putc('\n', sop->ofp);
828 greg 1.2 }
829 greg 1.57 if (waitflush > 0)
830 greg 1.31 fflush(sop->ofp);
831 greg 1.1 }
832 greg 1.45 sop->reclen += noopen; /* add to length if noopen */
833     return sop; /* return output stream */
834     openerr:
835     sprintf(errmsg, "cannot open '%s' for writing", oname);
836     error(SYSTEM, errmsg);
837     return NULL; /* pro forma return */
838 greg 1.1 }
839    
840     /* read input ray into buffer */
841     int
842     getinp(char *buf, FILE *fp)
843     {
844 greg 1.45 double dv[3], *dvp;
845     float *fvp;
846 greg 1.4 char *cp;
847     int i;
848    
849 greg 1.1 switch (inpfmt) {
850     case 'a':
851 greg 1.4 cp = buf; /* make sure we get 6 floats */
852     for (i = 0; i < 6; i++) {
853     if (fgetword(cp, buf+127-cp, fp) == NULL)
854 greg 1.36 return -1;
855     if (i >= 3)
856     dv[i-3] = atof(cp);
857 greg 1.4 if ((cp = fskip(cp)) == NULL || *cp)
858 greg 1.36 return -1;
859 greg 1.4 *cp++ = ' ';
860     }
861     getc(fp); /* get/put eol */
862     *cp-- = '\0'; *cp = '\n';
863 greg 1.36 if (DOT(dv,dv) <= FTINY*FTINY)
864     return 0; /* dummy ray */
865 greg 1.1 return strlen(buf);
866     case 'f':
867     if (fread(buf, sizeof(float), 6, fp) < 6)
868 greg 1.36 return -1;
869 greg 1.45 fvp = (float *)buf + 3;
870     if (DOT(fvp,fvp) <= FTINY*FTINY)
871 greg 1.36 return 0; /* dummy ray */
872 greg 1.1 return sizeof(float)*6;
873     case 'd':
874     if (fread(buf, sizeof(double), 6, fp) < 6)
875 greg 1.36 return -1;
876 greg 1.45 dvp = (double *)buf + 3;
877     if (DOT(dvp,dvp) <= FTINY*FTINY)
878 greg 1.36 return 0; /* dummy ray */
879 greg 1.1 return sizeof(double)*6;
880     }
881     error(INTERNAL, "botched input format");
882 greg 1.36 return -1; /* pro forma return */
883 greg 1.1 }
884    
885 greg 1.2 static float rparams[9]; /* traced ray parameters */
886 greg 1.1
887     /* return channel (ray) value */
888     double
889     chanvalue(int n)
890     {
891     if (--n < 0 || n >= 6)
892     error(USER, "illegal channel number ($N)");
893 greg 1.2 return rparams[n+3];
894 greg 1.1 }
895    
896 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
897 greg 1.1 void
898 greg 1.2 add_contrib(const char *modn)
899 greg 1.1 {
900     LUENT *le = lu_find(&modconttab, modn);
901     MODCONT *mp = (MODCONT *)le->data;
902     int bn;
903    
904     if (mp == NULL) {
905     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
906     error(USER, errmsg);
907     }
908 greg 1.2 eclock++; /* get bin number */
909 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
910     if (bn <= 0)
911     bn = 0;
912 greg 1.31 else if (bn >= mp->nbins) /* new bin */
913     le->data = (char *)(mp = growmodifier(mp, bn+1));
914 greg 1.2 addcolor(mp->cbin[bn], rparams);
915 greg 1.1 }
916    
917     /* output newline to ASCII file and/or flush as requested */
918     static int
919     puteol(const LUENT *e, void *p)
920     {
921 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
922 greg 1.1
923     if (outfmt == 'a')
924 greg 1.31 putc('\n', sop->ofp);
925 greg 1.1 if (!waitflush)
926 greg 1.31 fflush(sop->ofp);
927     if (ferror(sop->ofp)) {
928 greg 1.1 sprintf(errmsg, "write error on file '%s'", e->key);
929     error(SYSTEM, errmsg);
930     }
931     return 0;
932     }
933    
934 greg 1.2 /* put out ray contribution to file */
935     void
936 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
937 greg 1.2 {
938     float fv[3];
939     COLR cv;
940    
941     switch (outfmt) {
942     case 'a':
943     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
944     break;
945     case 'f':
946 greg 1.46 copycolor(fv, cnt);
947 greg 1.2 fwrite(fv, sizeof(float), 3, fout);
948     break;
949     case 'd':
950     fwrite(cnt, sizeof(double), 3, fout);
951     break;
952     case 'c':
953     setcolr(cv, cnt[0], cnt[1], cnt[2]);
954     fwrite(cv, sizeof(cv), 1, fout);
955     break;
956     default:
957     error(INTERNAL, "botched output format");
958     }
959     }
960    
961 greg 1.45 /* output ray tallies and clear for next accumulation */
962 greg 1.1 void
963 greg 1.49 done_contrib(int navg)
964 greg 1.1 {
965 greg 1.49 double sf = 1.;
966 greg 1.31 int i, j;
967     MODCONT *mp;
968     STREAMOUT *sop;
969 greg 1.49 /* set average scaling */
970     if (navg > 1)
971     sf = 1. / (double)navg;
972 greg 1.1 /* output modifiers in order */
973     for (i = 0; i < nmods; i++) {
974     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
975 greg 1.49 if (navg > 1) /* average scaling */
976     for (j = mp->nbins; j--; )
977     scalecolor(mp->cbin[j], sf);
978 greg 1.31 sop = getostream(mp->outspec, mp->modname, 0,0);
979     put_contrib(mp->cbin[0], sop->ofp);
980 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
981 greg 1.31 sop == getostream(mp->outspec, mp->modname, 1,0))
982 greg 1.12 for (j = 1; j < mp->nbins; j++)
983 greg 1.31 put_contrib(mp->cbin[j], sop->ofp);
984 greg 1.12 else
985     for (j = 1; j < mp->nbins; j++)
986 greg 1.14 put_contrib(mp->cbin[j],
987 greg 1.31 getostream(mp->outspec,mp->modname,j,0)->ofp);
988 greg 1.45 /* clear for next time */
989 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
990 greg 1.1 }
991     --waitflush; /* terminate records */
992     lu_doall(&ofiletab, puteol, NULL);
993 greg 1.2 if (using_stdout & (outfmt == 'a'))
994     putc('\n', stdout);
995     if (!waitflush) {
996 greg 1.57 waitflush = (yres > 0) & (xres > 1) ? 0 : xres;
997 greg 1.2 if (using_stdout)
998     fflush(stdout);
999     }
1000 greg 1.1 }
1001    
1002 greg 1.3 /* queue completed ray tree produced by rtrace process */
1003     void
1004     queue_raytree(struct rtproc *rtp)
1005     {
1006     struct rtproc *rtu, *rtl = NULL;
1007     /* insert following ray order */
1008     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
1009     if (rtp->raynum < rtu->raynum)
1010     break;
1011     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
1012     if (rtu == NULL)
1013     error(SYSTEM, "out of memory in queue_raytree");
1014     *rtu = *rtp;
1015     if (rtl == NULL) {
1016     rtu->next = rt_unproc;
1017     rt_unproc = rtu;
1018     } else {
1019     rtu->next = rtl->next;
1020     rtl->next = rtu;
1021     }
1022     rtp->raynum = 0; /* clear path for next ray tree */
1023     rtp->bsiz = 0;
1024     rtp->buf = NULL;
1025     rtp->nbr = 0;
1026     }
1027    
1028     /* process completed ray trees from our queue */
1029 greg 1.1 void
1030 greg 1.3 process_queue(void)
1031 greg 1.1 {
1032 greg 1.3 char modname[128];
1033     /* ray-ordered queue */
1034     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
1035     struct rtproc *rtp = rt_unproc;
1036 greg 1.2 int n = rtp->nbr;
1037 greg 1.1 const char *cp = rtp->buf;
1038     while (n > 0) { /* process rays */
1039 greg 1.2 register char *mnp = modname;
1040 greg 1.1 /* skip leading tabs */
1041     while (n > 0 && *cp == '\t') {
1042     cp++; n--;
1043     }
1044 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
1045     error(USER, "bad modifier name from rtrace");
1046     /* get modifier name */
1047 greg 1.40 while (n > 1 && *cp != '\t') {
1048     if (mnp - modname >= sizeof(modname)-2)
1049     error(INTERNAL, "modifier name too long");
1050 greg 1.1 *mnp++ = *cp++; n--;
1051     }
1052     *mnp = '\0';
1053 greg 1.2 cp++; n--; /* eat following tab */
1054 greg 1.1 if (n < (int)(sizeof(float)*9))
1055     error(USER, "incomplete ray value from rtrace");
1056     /* add ray contribution */
1057 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
1058 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
1059 greg 1.2 add_contrib(modname);
1060 greg 1.1 }
1061 greg 1.49 /* time to produce record? */
1062     if (account > 0 && !--account)
1063     done_contrib(account = accumulate);
1064 greg 1.1 lastdone = rtp->raynum;
1065 greg 1.36 if (rtp->buf != NULL) /* free up buffer space */
1066     free(rtp->buf);
1067 greg 1.3 rt_unproc = rtp->next;
1068     free(rtp); /* done with this ray tree */
1069 greg 1.1 }
1070     }
1071    
1072     /* wait for rtrace process to finish with ray tree */
1073     struct rtproc *
1074     wait_rproc(void)
1075     {
1076     struct rtproc *rtfree = NULL;
1077     fd_set readset, errset;
1078 greg 1.58 ssize_t nr;
1079 greg 1.1 struct rtproc *rt;
1080     int n;
1081    
1082     do {
1083     nr = 0; /* prepare select call */
1084     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
1085     for (rt = &rt0; rt != NULL; rt = rt->next) {
1086     if (rt->raynum) {
1087     FD_SET(rt->pd.r, &readset);
1088     ++nr;
1089     }
1090     FD_SET(rt->pd.r, &errset);
1091     if (rt->pd.r >= n)
1092     n = rt->pd.r + 1;
1093     }
1094     if (!nr) /* no rays pending */
1095     break;
1096     if (nr > 1) { /* call select for multiple proc's */
1097     errno = 0;
1098     if (select(n, &readset, NULL, &errset, NULL) < 0)
1099     error(SYSTEM, "select call error in wait_rproc()");
1100     } else
1101     FD_ZERO(&errset);
1102     nr = 0;
1103     for (rt = &rt0; rt != NULL; rt = rt->next) {
1104     if (!FD_ISSET(rt->pd.r, &readset) &&
1105     !FD_ISSET(rt->pd.r, &errset))
1106     continue;
1107     if (rt->buf == NULL) {
1108     rt->bsiz = treebufsiz;
1109 greg 1.62 rt->buf = (char *)malloc(rt->bsiz);
1110 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
1111 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
1112     rt->bsiz = treebufsiz;
1113     else
1114 greg 1.28 treebufsiz = rt->bsiz += BUFSIZ;
1115 greg 1.1 rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1116     }
1117     if (rt->buf == NULL)
1118     error(SYSTEM, "out of memory in wait_rproc");
1119 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1120     if (nr <= 0)
1121 greg 1.1 error(USER, "rtrace process died");
1122 greg 1.2 rt->nbr += nr; /* advance & check */
1123 greg 1.62 if (rt->nbr >= 6 && !memcmp(rt->buf+rt->nbr-6,
1124     "~\t~\t~\t", 6)) {
1125     rt->nbr -= 6; /* elide terminator */
1126 greg 1.3 queue_raytree(rt);
1127 greg 1.1 rtfree = rt; /* ready for next ray */
1128     }
1129     }
1130     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
1131     return rtfree;
1132     }
1133    
1134     /* return next available rtrace process */
1135     struct rtproc *
1136     get_rproc(void)
1137     {
1138     struct rtproc *rtp;
1139     /* check for idle rtrace */
1140     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
1141     if (!rtp->raynum)
1142     return rtp;
1143     return wait_rproc(); /* need to wait for one */
1144     }
1145    
1146     /* trace ray contributions (main loop) */
1147     void
1148 greg 1.5 trace_contribs(FILE *fin)
1149 greg 1.1 {
1150 greg 1.49 static int ignore_warning_given = 0;
1151 greg 1.1 char inpbuf[128];
1152     int iblen;
1153     struct rtproc *rtp;
1154     /* loop over input */
1155 greg 1.36 while ((iblen = getinp(inpbuf, fin)) >= 0) {
1156 greg 1.49 if (!iblen && accumulate != 1) {
1157     if (!ignore_warning_given++)
1158     error(WARNING,
1159     "dummy ray(s) ignored during accumulation\n");
1160     continue;
1161     }
1162 greg 1.53 if (!iblen || /* need flush/reset? */
1163 greg 1.36 queue_length() > 10*nrtprocs() ||
1164     lastray+1 < lastray) {
1165 greg 1.1 while (wait_rproc() != NULL)
1166 greg 1.3 process_queue();
1167 greg 1.62 lastdone = lastray = 0;
1168 greg 1.1 }
1169     rtp = get_rproc(); /* get avail. rtrace process */
1170 greg 1.36 rtp->raynum = ++lastray; /* assign ray */
1171     if (iblen) { /* trace ray if valid */
1172     writebuf(rtp->pd.w, inpbuf, iblen);
1173     } else { /* else bypass dummy ray */
1174 greg 1.53 queue_raytree(rtp); /* queue empty ray/record */
1175     if ((yres <= 0) | (xres <= 0))
1176     waitflush = 1; /* flush right after */
1177 greg 1.36 }
1178 greg 1.38 process_queue(); /* catch up with results */
1179 greg 1.14 if (raysleft && !--raysleft)
1180 greg 1.38 break; /* preemptive EOI */
1181 greg 1.1 }
1182     while (wait_rproc() != NULL) /* process outstanding rays */
1183 greg 1.3 process_queue();
1184 greg 1.49 if (accumulate <= 0)
1185     done_contrib(0); /* output tallies */
1186     else if (account < accumulate) {
1187     error(WARNING, "partial accumulation in final record");
1188     done_contrib(accumulate - account);
1189     }
1190 greg 1.14 if (raysleft)
1191 greg 1.2 error(USER, "unexpected EOF on input");
1192 greg 1.14 lu_done(&ofiletab); /* close output files */
1193     }
1194    
1195 greg 1.46 /* get ray contribution from previous file */
1196     static int
1197     get_contrib(DCOLOR cnt, FILE *finp)
1198     {
1199     COLOR fv;
1200     COLR cv;
1201    
1202     switch (outfmt) {
1203     case 'a':
1204     return(fscanf(finp,"%lf %lf %lf",&cnt[0],&cnt[1],&cnt[2]) == 3);
1205     case 'f':
1206     if (fread(fv, sizeof(fv[0]), 3, finp) != 3)
1207     return(0);
1208     copycolor(cnt, fv);
1209     return(1);
1210     case 'd':
1211     return(fread(cnt, sizeof(cnt[0]), 3, finp) == 3);
1212     case 'c':
1213     if (fread(cv, sizeof(cv), 1, finp) != 1)
1214     return(0);
1215     colr_color(fv, cv);
1216     copycolor(cnt, fv);
1217     return(1);
1218     default:
1219     error(INTERNAL, "botched output format");
1220     }
1221     return(0); /* pro forma return */
1222     }
1223    
1224     /* close output file opened for input */
1225 greg 1.14 static int
1226 greg 1.46 myclose(const LUENT *e, void *p)
1227 greg 1.14 {
1228 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
1229    
1230 greg 1.46 if (sop->ofp == NULL)
1231 greg 1.50 return(0);
1232 greg 1.46 fclose(sop->ofp);
1233     sop->ofp = NULL;
1234 greg 1.50 return(0);
1235 greg 1.14 }
1236    
1237 greg 1.45 /* load previously accumulated values */
1238     void
1239     reload_output(void)
1240     {
1241     int i, j;
1242     MODCONT *mp;
1243     int ofl;
1244     char oname[1024];
1245     char *fmode = "rb";
1246     char *outvfmt;
1247     LUENT *ment, *oent;
1248 greg 1.46 int xr, yr;
1249 greg 1.45 STREAMOUT sout;
1250 greg 1.46 DCOLOR rgbv;
1251 greg 1.45
1252     switch (outfmt) {
1253     case 'a':
1254     outvfmt = "ascii";
1255     fmode = "r";
1256     break;
1257     case 'f':
1258     outvfmt = "float";
1259     break;
1260     case 'd':
1261     outvfmt = "double";
1262     break;
1263     case 'c':
1264     outvfmt = COLRFMT;
1265     break;
1266     default:
1267     error(INTERNAL, "botched output format");
1268     return;
1269     }
1270 greg 1.46 /* reload modifier values */
1271 greg 1.45 for (i = 0; i < nmods; i++) {
1272     ment = lu_find(&modconttab,modname[i]);
1273     mp = (MODCONT *)ment->data;
1274     if (mp->outspec == NULL)
1275     error(USER, "cannot reload from stdout");
1276     if (mp->outspec[0] == '!')
1277     error(USER, "cannot reload from command");
1278 greg 1.46 for (j = 0; ; j++) { /* load each modifier bin */
1279 greg 1.45 ofl = ofname(oname, mp->outspec, mp->modname, j);
1280     if (ofl < 0)
1281     error(USER, "bad output file specification");
1282     oent = lu_find(&ofiletab, oname);
1283     if (oent->data != NULL) {
1284     sout = *(STREAMOUT *)oent->data;
1285     } else {
1286     sout.reclen = 0;
1287 greg 1.46 sout.outpipe = 0;
1288     sout.xr = xres; sout.yr = yres;
1289 greg 1.45 sout.ofp = NULL;
1290     }
1291 greg 1.46 if (sout.ofp == NULL) { /* open output as input */
1292     sout.ofp = fopen(oname, fmode);
1293     if (sout.ofp == NULL) {
1294     if (j)
1295     break; /* assume end of modifier */
1296     sprintf(errmsg, "missing reload file '%s'",
1297     oname);
1298     error(WARNING, errmsg);
1299     break;
1300     }
1301     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1302     sprintf(errmsg, "format mismatch for '%s'",
1303     oname);
1304     error(USER, errmsg);
1305     }
1306     if ((sout.xr > 0) & (sout.yr > 0) &&
1307     (!fscnresolu(&xr, &yr, sout.ofp) ||
1308 greg 1.47 (xr != sout.xr) |
1309     (yr != sout.yr))) {
1310 greg 1.46 sprintf(errmsg, "resolution mismatch for '%s'",
1311     oname);
1312     error(USER, errmsg);
1313     }
1314 greg 1.45 }
1315 greg 1.46 /* read in RGB value */
1316     if (!get_contrib(rgbv, sout.ofp)) {
1317 greg 1.48 if (!j) {
1318     fclose(sout.ofp);
1319 greg 1.46 break; /* ignore empty file */
1320 greg 1.48 }
1321 greg 1.47 if (j < mp->nbins) {
1322 greg 1.46 sprintf(errmsg, "missing data in '%s'",
1323     oname);
1324     error(USER, errmsg);
1325     }
1326     break;
1327     }
1328     if (j >= mp->nbins) /* grow modifier size */
1329     ment->data = (char *)(mp = growmodifier(mp, j+1));
1330     copycolor(mp->cbin[j], rgbv);
1331 greg 1.48 if (oent->key == NULL) /* new file entry */
1332     oent->key = strcpy((char *)
1333     malloc(strlen(oname)+1), oname);
1334     if (oent->data == NULL)
1335     oent->data = (char *)malloc(sizeof(STREAMOUT));
1336     *(STREAMOUT *)oent->data = sout;
1337 greg 1.45 }
1338     }
1339 greg 1.46 lu_doall(&ofiletab, myclose, NULL); /* close all files */
1340     }
1341    
1342     /* seek on the given output file */
1343     static int
1344     myseeko(const LUENT *e, void *p)
1345     {
1346     STREAMOUT *sop = (STREAMOUT *)e->data;
1347     off_t nbytes = *(off_t *)p;
1348    
1349     if (sop->reclen > 1)
1350     nbytes = nbytes * sop->reclen;
1351     if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1352     sprintf(errmsg, "seek error on file '%s'", e->key);
1353     error(SYSTEM, errmsg);
1354     }
1355     return 0;
1356 greg 1.45 }
1357    
1358 greg 1.14 /* recover output if possible */
1359     void
1360     recover_output(FILE *fin)
1361     {
1362 greg 1.31 off_t lastout = -1;
1363     int outvsiz, recsiz;
1364     char *outvfmt;
1365     int i, j;
1366     MODCONT *mp;
1367     int ofl;
1368     char oname[1024];
1369     LUENT *ment, *oent;
1370     STREAMOUT sout;
1371     off_t nvals;
1372     int xr, yr;
1373 greg 1.14
1374     switch (outfmt) {
1375     case 'a':
1376     error(USER, "cannot recover ASCII output");
1377     return;
1378     case 'f':
1379     outvsiz = sizeof(float)*3;
1380     outvfmt = "float";
1381     break;
1382     case 'd':
1383     outvsiz = sizeof(double)*3;
1384     outvfmt = "double";
1385     break;
1386     case 'c':
1387     outvsiz = sizeof(COLR);
1388     outvfmt = COLRFMT;
1389     break;
1390     default:
1391     error(INTERNAL, "botched output format");
1392     return;
1393     }
1394     /* check modifier outputs */
1395     for (i = 0; i < nmods; i++) {
1396     ment = lu_find(&modconttab,modname[i]);
1397     mp = (MODCONT *)ment->data;
1398     if (mp->outspec == NULL)
1399     error(USER, "cannot recover from stdout");
1400 greg 1.31 if (mp->outspec[0] == '!')
1401     error(USER, "cannot recover from command");
1402 greg 1.14 for (j = 0; ; j++) { /* check each bin's file */
1403     ofl = ofname(oname, mp->outspec, mp->modname, j);
1404     if (ofl < 0)
1405     error(USER, "bad output file specification");
1406     oent = lu_find(&ofiletab, oname);
1407 greg 1.31 if (oent->data != NULL) {
1408     sout = *(STREAMOUT *)oent->data;
1409     } else {
1410 greg 1.45 sout.reclen = 0;
1411 greg 1.46 sout.outpipe = 0;
1412 greg 1.31 sout.ofp = NULL;
1413     }
1414     if (sout.ofp != NULL) { /* already open? */
1415 greg 1.14 if (ofl & OF_BIN)
1416     continue;
1417     break;
1418     }
1419     /* open output */
1420 greg 1.31 sout.ofp = fopen(oname, "rb+");
1421     if (sout.ofp == NULL) {
1422 greg 1.23 if (j)
1423     break; /* assume end of modifier */
1424     sprintf(errmsg, "missing recover file '%s'",
1425     oname);
1426 greg 1.45 error(WARNING, errmsg);
1427     break;
1428 greg 1.23 }
1429 greg 1.31 nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1430 greg 1.14 if (nvals <= 0) {
1431     lastout = 0; /* empty output, quit here */
1432 greg 1.31 fclose(sout.ofp);
1433 greg 1.14 break;
1434     }
1435 greg 1.45 if (!sout.reclen) {
1436 greg 1.31 if (!(ofl & OF_BIN)) {
1437 greg 1.14 sprintf(errmsg,
1438 greg 1.32 "need -bn to recover file '%s'",
1439 greg 1.14 oname);
1440 greg 1.32 error(USER, errmsg);
1441 greg 1.14 }
1442 greg 1.31 recsiz = outvsiz;
1443     } else
1444     recsiz = outvsiz * sout.reclen;
1445    
1446     lseek(fileno(sout.ofp), 0, SEEK_SET);
1447     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1448     sprintf(errmsg, "format mismatch for '%s'",
1449     oname);
1450     error(USER, errmsg);
1451     }
1452 greg 1.48 sout.xr = xres; sout.yr = yres;
1453     if ((sout.xr > 0) & (sout.yr > 0) &&
1454 greg 1.31 (!fscnresolu(&xr, &yr, sout.ofp) ||
1455 greg 1.48 (xr != sout.xr) |
1456     (yr != sout.yr))) {
1457 greg 1.31 sprintf(errmsg, "resolution mismatch for '%s'",
1458     oname);
1459     error(USER, errmsg);
1460 greg 1.14 }
1461 greg 1.31 nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1462     if ((lastout < 0) | (nvals < lastout))
1463 greg 1.14 lastout = nvals;
1464 greg 1.31 if (oent->key == NULL) /* new entry */
1465 greg 1.14 oent->key = strcpy((char *)
1466     malloc(strlen(oname)+1), oname);
1467 greg 1.31 if (oent->data == NULL)
1468     oent->data = (char *)malloc(sizeof(STREAMOUT));
1469     *(STREAMOUT *)oent->data = sout;
1470 greg 1.14 if (!(ofl & OF_BIN))
1471     break; /* no bin separation */
1472     }
1473     if (!lastout) { /* empty output */
1474 greg 1.16 error(WARNING, "no previous data to recover");
1475 greg 1.14 lu_done(&ofiletab); /* reclose all outputs */
1476     return;
1477     }
1478 greg 1.31 if (j > mp->nbins) /* reallocate modifier bins */
1479     ment->data = (char *)(mp = growmodifier(mp, j));
1480 greg 1.14 }
1481 greg 1.15 if (lastout < 0) {
1482 greg 1.16 error(WARNING, "no output files to recover");
1483 greg 1.15 return;
1484     }
1485 greg 1.49 if (raysleft && lastout >= raysleft/accumulate) {
1486 greg 1.24 error(WARNING, "output appears to be complete");
1487     /* XXX should read & discard input? */
1488     quit(0);
1489     }
1490 greg 1.14 /* seek on all files */
1491     nvals = lastout * outvsiz;
1492     lu_doall(&ofiletab, myseeko, &nvals);
1493 greg 1.28 /* skip repeated input */
1494 greg 1.14 for (nvals = 0; nvals < lastout; nvals++)
1495 greg 1.36 if (getinp(oname, fin) < 0)
1496 greg 1.14 error(USER, "unexpected EOF on input");
1497 greg 1.49 lastray = lastdone = (unsigned long)lastout * accumulate;
1498 greg 1.14 if (raysleft)
1499     raysleft -= lastray;
1500 greg 1.1 }