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root/radiance/ray/src/util/rtcontrib.c
Revision: 1.32
Committed: Thu Oct 6 16:28:59 2005 UTC (18 years, 6 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.31: +19 -19 lines
Log Message: 
Fixes in new rtcontrib -bn option

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.32 static const char RCSid[] = "$Id: rtcontrib.c,v 1.31 2005/10/06 05:49:44 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     int treebufsiz = BUFSIZ; /* current tree buffer size */
24    
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 1.31 * if binv is non-zero. 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 #define CNT_UNKNOWN 0 /* unknown record length */
50     #define CNT_PIPE (-1) /* output to a pipe */
51     /*
52     * The STREAMOUT structure holds an open FILE pointer and a count of
53     * the number of RGB triplets per record, or CNT_UNKNOWN (0) if
54     * unknown or CNT_PIPE (-1) if writing to a command.
55     */
56     typedef struct {
57     FILE *ofp; /* output file pointer */
58     int reclen; /* triplets/record */
59     } STREAMOUT;
60    
61     /* close output stream and free record */
62     static void
63     closestream(void *p)
64     {
65     STREAMOUT *sop = (STREAMOUT *)p;
66     if (sop->reclen == CNT_PIPE)
67     pclose(sop->ofp);
68     else
69     fclose(sop->ofp);
70     free(p);
71     }
72 greg 1.1
73 greg 1.31 LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */
74 greg 1.1
75 greg 1.14 #define OF_MODIFIER 01
76     #define OF_BIN 02
77    
78 greg 1.32 STREAMOUT *getostream(const char *ospec, const char *mname, int bn, int noopen);
79 greg 1.14 int ofname(char *oname, const char *ospec, const char *mname, int bn);
80     void printheader(FILE *fout, const char *info);
81 greg 1.30 void printresolu(FILE *fout);
82 greg 1.1
83     /*
84     * The rcont structure is used to manage i/o with a particular
85     * rtrace child process. Input is passed unchanged from stdin,
86     * and output is processed in input order and accumulated according
87     * to the corresponding modifier and bin number.
88     */
89     struct rtproc {
90     struct rtproc *next; /* next in list of processes */
91     SUBPROC pd; /* rtrace pipe descriptors */
92 greg 1.2 unsigned long raynum; /* ray number for this tree */
93     int bsiz; /* ray tree buffer length */
94     char *buf; /* ray tree buffer */
95     int nbr; /* number of bytes from rtrace */
96 greg 1.5 }; /* rtrace process buffer */
97 greg 1.1
98     /* rtrace command and defaults */
99 greg 1.18 char *rtargv[256+2*MAXMODLIST] = { "rtrace",
100     "-dj", ".5", "-dr", "3",
101 greg 1.13 "-ab", "1", "-ad", "128", };
102     int rtargc = 9;
103 greg 1.1 /* overriding rtrace options */
104 greg 1.6 char *myrtopts[] = { "-o~~TmWdp", "-h-", "-x", "1", "-y", "0",
105     "-dt", "0", "-as", "0", "-aa", "0", NULL };
106 greg 1.1
107     struct rtproc rt0; /* head of rtrace process list */
108    
109     struct rtproc *rt_unproc = NULL; /* unprocessed ray trees */
110    
111     char persistfn[] = "pfXXXXXX"; /* persist file name */
112    
113     int gargc; /* global argc */
114     char **gargv; /* global argv */
115     #define progname gargv[0]
116    
117     char *octree; /* global octree argument */
118    
119     int inpfmt = 'a'; /* input format */
120     int outfmt = 'a'; /* output format */
121    
122     int header = 1; /* output header? */
123     int xres = 0; /* horiz. output resolution */
124     int yres = 0; /* vert. output resolution */
125    
126 greg 1.14 unsigned long raysleft; /* number of rays left to trace */
127 greg 1.1 long waitflush; /* how long until next flush */
128    
129     unsigned long lastray = 0; /* last ray number sent */
130     unsigned long lastdone = 0; /* last ray processed */
131    
132 greg 1.2 int using_stdout = 0; /* are we using stdout? */
133    
134 greg 1.1 const char *modname[MAXMODLIST]; /* ordered modifier name list */
135     int nmods = 0; /* number of modifiers */
136    
137 greg 1.29 #define queue_length() (lastray - lastdone)
138    
139 greg 1.31 MODCONT *growmodifier(MODCONT *mp, int nb);
140     MODCONT *addmodifier(char *modn, char *outf, char *binv, int bincnt);
141     void addmodfile(char *fname, char *outf, char *binv, int bincnt);
142 greg 1.1
143 greg 1.5 void init(int np);
144 greg 1.1 int done_rprocs(struct rtproc *rtp);
145 greg 1.14 void recover_output(FILE *fin);
146     void trace_contribs(FILE *fin);
147 greg 1.1 struct rtproc *wait_rproc(void);
148     struct rtproc *get_rproc(void);
149 greg 1.3 void queue_raytree(struct rtproc *rtp);
150     void process_queue(void);
151 greg 1.1
152 greg 1.14 void put_contrib(const DCOLOR cnt, FILE *fout);
153 greg 1.2 void add_contrib(const char *modn);
154 greg 1.1 void done_contrib(void);
155    
156 greg 1.29 /* return number of open rtrace processes */
157     static int
158     nrtprocs(void)
159     {
160     int nrtp = 0;
161     struct rtproc *rtp;
162    
163     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
164     nrtp += rtp->pd.running;
165     return(nrtp);
166     }
167    
168 greg 1.1 /* set input/output format */
169     static void
170     setformat(const char *fmt)
171     {
172     switch (fmt[0]) {
173     case 'f':
174     case 'd':
175 greg 1.10 SET_FILE_BINARY(stdin);
176     /* fall through */
177     case 'a':
178 greg 1.1 inpfmt = fmt[0];
179     break;
180     default:
181     goto fmterr;
182     }
183     switch (fmt[1]) {
184     case '\0':
185     outfmt = inpfmt;
186     return;
187     case 'a':
188     case 'f':
189     case 'd':
190     case 'c':
191     outfmt = fmt[1];
192     break;
193     default:
194     goto fmterr;
195     }
196     if (!fmt[2])
197     return;
198     fmterr:
199     sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
200     error(USER, errmsg);
201     }
202    
203     /* gather rays from rtrace and output contributions */
204     int
205     main(int argc, char *argv[])
206     {
207     int nprocs = 1;
208 greg 1.14 int recover = 0;
209 greg 1.1 char *curout = NULL;
210     char *binval = NULL;
211 greg 1.31 int bincnt = 0;
212 greg 1.5 char fmt[8];
213 greg 1.2 int i, j;
214 greg 1.25 /* need at least one argument */
215     if (argc < 2) {
216     fprintf(stderr,
217     "Usage: %s [-n nprocs][-r][-e expr][-f source][-o ospec][-b binv] {-m mod | -M file} [rtrace options] octree\n",
218     argv[0]);
219     exit(1);
220     }
221 greg 1.2 /* global program name */
222 greg 1.1 gargv = argv;
223 greg 1.11 /* initialize calcomp routines */
224 greg 1.1 esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
225     esupport &= ~(E_OUTCHAN);
226 greg 1.11 varset("PI", ':', PI);
227 greg 1.1 /* get our options */
228 greg 1.2 for (i = 1; i < argc-1; i++) {
229     /* expand arguments */
230     while ((j = expandarg(&argc, &argv, i)) > 0)
231     ;
232     if (j < 0) {
233     fprintf(stderr, "%s: cannot expand '%s'",
234     argv[0], argv[i]);
235     exit(1);
236     }
237     if (argv[i][0] == '-')
238     switch (argv[i][1]) {
239 greg 1.14 case 'r': /* recover output */
240     if (argv[i][2]) break;
241     recover++;
242     continue;
243 greg 1.2 case 'n': /* number of processes */
244 greg 1.21 if (argv[i][2] || i >= argc-2) break;
245 greg 1.2 nprocs = atoi(argv[++i]);
246     if (nprocs <= 0)
247     error(USER, "illegal number of processes");
248     continue;
249     case 'h': /* output header? */
250     switch (argv[i][2]) {
251     case '\0':
252     header = !header;
253     continue;
254 greg 1.3 case '+': case '1':
255     case 'T': case 't':
256     case 'Y': case 'y':
257 greg 1.2 header = 1;
258     continue;
259 greg 1.3 case '-': case '0':
260     case 'F': case 'f':
261     case 'N': case 'n':
262 greg 1.2 header = 0;
263     continue;
264     }
265     break;
266     case 'f': /* file or i/o format */
267     if (!argv[i][2]) {
268 greg 1.9 char *fpath;
269 greg 1.21 if (i >= argc-2) break;
270 greg 1.9 fpath = getpath(argv[++i],
271     getrlibpath(), R_OK);
272     if (fpath == NULL) {
273     sprintf(errmsg,
274     "cannot find file '%s'",
275     argv[i]);
276     error(USER, errmsg);
277     }
278     fcompile(fpath);
279 greg 1.2 continue;
280     }
281     setformat(argv[i]+2);
282     continue;
283     case 'e': /* expression */
284 greg 1.21 if (argv[i][2] || i >= argc-2) break;
285 greg 1.2 scompile(argv[++i], NULL, 0);
286 greg 1.1 continue;
287 greg 1.2 case 'o': /* output file spec. */
288 greg 1.21 if (argv[i][2] || i >= argc-2) break;
289 greg 1.2 curout = argv[++i];
290 greg 1.1 continue;
291 greg 1.2 case 'x': /* horiz. output resolution */
292 greg 1.21 if (argv[i][2] || i >= argc-2) break;
293 greg 1.2 xres = atoi(argv[++i]);
294 greg 1.1 continue;
295 greg 1.2 case 'y': /* vert. output resolution */
296 greg 1.21 if (argv[i][2] || i >= argc-2) break;
297 greg 1.2 yres = atoi(argv[++i]);
298     continue;
299 greg 1.31 case 'b': /* bin expression/count */
300     if (i >= argc-2) break;
301     if (argv[i][2] == 'n') {
302     bincnt = atoi(argv[++i]);
303     continue;
304     }
305     if (argv[i][2]) break;
306 greg 1.2 binval = argv[++i];
307     continue;
308     case 'm': /* modifier name */
309 greg 1.21 if (argv[i][2] || i >= argc-2) break;
310 greg 1.2 rtargv[rtargc++] = "-ti";
311     rtargv[rtargc++] = argv[++i];
312 greg 1.31 addmodifier(argv[i], curout, binval, bincnt);
313 greg 1.1 continue;
314 greg 1.17 case 'M': /* modifier file */
315 greg 1.21 if (argv[i][2] || i >= argc-2) break;
316 greg 1.19 rtargv[rtargc++] = "-tI";
317     rtargv[rtargc++] = argv[++i];
318 greg 1.31 addmodfile(argv[i], curout, binval, bincnt);
319 greg 1.17 continue;
320 greg 1.1 }
321 greg 1.2 rtargv[rtargc++] = argv[i]; /* assume rtrace option */
322 greg 1.1 }
323 greg 1.2 /* set global argument list */
324     gargc = argc; gargv = argv;
325 greg 1.1 /* add "mandatory" rtrace settings */
326 greg 1.2 for (j = 0; myrtopts[j] != NULL; j++)
327     rtargv[rtargc++] = myrtopts[j];
328     /* just asking for defaults? */
329     if (!strcmp(argv[i], "-defaults")) {
330 greg 1.1 char sxres[16], syres[16];
331     char *rtpath;
332 greg 1.2 printf("-n %-2d\t\t\t\t# number of processes\n", nprocs);
333 greg 1.1 fflush(stdout); /* report OUR options */
334     rtargv[rtargc++] = header ? "-h+" : "-h-";
335     sprintf(fmt, "-f%c%c", inpfmt, outfmt);
336     rtargv[rtargc++] = fmt;
337     rtargv[rtargc++] = "-x";
338     sprintf(sxres, "%d", xres);
339     rtargv[rtargc++] = sxres;
340     rtargv[rtargc++] = "-y";
341     sprintf(syres, "%d", yres);
342     rtargv[rtargc++] = syres;
343 greg 1.2 rtargv[rtargc++] = "-oTW";
344 greg 1.1 rtargv[rtargc++] = "-defaults";
345     rtargv[rtargc] = NULL;
346     rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
347     if (rtpath == NULL) {
348     eputs(rtargv[0]);
349     eputs(": command not found\n");
350     exit(1);
351     }
352     execv(rtpath, rtargv);
353     perror(rtpath); /* execv() should not return */
354     exit(1);
355 greg 1.5 }
356     if (nprocs > 1) { /* add persist file if parallel */
357 greg 1.2 rtargv[rtargc++] = "-PP";
358     rtargv[rtargc++] = mktemp(persistfn);
359     }
360 greg 1.1 /* add format string */
361     sprintf(fmt, "-f%cf", inpfmt);
362     rtargv[rtargc++] = fmt;
363     /* octree argument is last */
364 greg 1.2 if (i <= 0 || i != argc-1 || argv[i][0] == '-')
365     error(USER, "missing octree argument");
366     rtargv[rtargc++] = octree = argv[i];
367 greg 1.1 rtargv[rtargc] = NULL;
368 greg 1.24 /* start rtrace */
369 greg 1.1 init(nprocs);
370 greg 1.14 if (recover) /* perform recovery if requested */
371     recover_output(stdin);
372 greg 1.24 trace_contribs(stdin); /* compute contributions */
373 greg 1.1 quit(0);
374     }
375    
376 schorsch 1.26 #ifndef SIGALRM
377     #define SIGALRM SIGTERM
378     #endif
379 greg 1.1 /* kill persistent rtrace process */
380     static void
381     killpersist(void)
382     {
383     FILE *fp = fopen(persistfn, "r");
384 schorsch 1.26 RT_PID pid;
385 greg 1.1
386     if (fp == NULL)
387     return;
388     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
389     unlink(persistfn);
390     fclose(fp);
391     }
392    
393     /* close rtrace processes and clean up */
394     int
395     done_rprocs(struct rtproc *rtp)
396     {
397     int st0, st1 = 0;
398    
399     if (rtp->next != NULL) { /* close last opened first! */
400     st1 = done_rprocs(rtp->next);
401     free((void *)rtp->next);
402     rtp->next = NULL;
403     }
404     st0 = close_process(&rtp->pd);
405     if (st0 < 0)
406     error(WARNING, "unknown return status from rtrace process");
407     else if (st0 > 0)
408     return(st0);
409     return(st1);
410     }
411    
412     /* exit with status */
413     void
414     quit(int status)
415     {
416     int rtstat;
417    
418     if (rt0.next != NULL) /* terminate persistent rtrace */
419     killpersist();
420     /* clean up rtrace process(es) */
421     rtstat = done_rprocs(&rt0);
422     if (status == 0)
423     status = rtstat;
424     exit(status); /* flushes all output streams */
425     }
426    
427 greg 1.5 /* start rtrace processes and initialize */
428 greg 1.1 void
429     init(int np)
430     {
431     struct rtproc *rtp;
432     int i;
433     int maxbytes;
434 greg 1.2 /* make sure we have something to do */
435     if (!nmods)
436     error(USER, "No modifiers specified");
437 greg 1.1 /* assign ray variables */
438     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
439     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
440     /* set up signal handling */
441 greg 1.3 signal(SIGINT, quit);
442     #ifdef SIGHUP
443     signal(SIGHUP, quit);
444     #endif
445     #ifdef SIGTERM
446     signal(SIGTERM, quit);
447     #endif
448     #ifdef SIGPIPE
449 greg 1.1 signal(SIGPIPE, quit);
450     #endif
451     rtp = &rt0; /* start rtrace process(es) */
452     for (i = 0; i++ < np; ) {
453     errno = 0;
454     maxbytes = open_process(&rtp->pd, rtargv);
455     if (maxbytes == 0) {
456     eputs(rtargv[0]);
457     eputs(": command not found\n");
458     exit(1);
459     }
460     if (maxbytes < 0)
461     error(SYSTEM, "cannot start rtrace process");
462     if (maxbytes > treebufsiz)
463     treebufsiz = maxbytes;
464 greg 1.2 rtp->raynum = 0;
465 greg 1.1 rtp->bsiz = 0;
466     rtp->buf = NULL;
467 greg 1.2 rtp->nbr = 0;
468 greg 1.1 if (i == np) /* last process? */
469     break;
470     if (i == 1)
471     sleep(2); /* wait for persist file */
472     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
473     if (rtp->next == NULL)
474     error(SYSTEM, "out of memory in init");
475     rtp = rtp->next;
476     }
477     rtp->next = NULL; /* terminate list */
478     if (yres > 0) {
479     if (xres > 0)
480 greg 1.14 raysleft = (unsigned long)xres*yres;
481 greg 1.1 else
482     raysleft = yres;
483     } else
484     raysleft = 0;
485     waitflush = xres;
486     }
487    
488 greg 1.31 /* grow modifier to accommodate more bins */
489     MODCONT *
490     growmodifier(MODCONT *mp, int nb)
491     {
492     if (nb <= mp->nbins)
493     return mp;
494     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
495     if (mp == NULL)
496     error(SYSTEM, "out of memory in growmodifier");
497     memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
498     mp->nbins = nb;
499     return mp;
500     }
501    
502 greg 1.1 /* add modifier to our list to track */
503     MODCONT *
504 greg 1.31 addmodifier(char *modn, char *outf, char *binv, int bincnt)
505 greg 1.1 {
506     LUENT *lep = lu_find(&modconttab, modn);
507     MODCONT *mp;
508 greg 1.32 int i;
509 greg 1.1
510     if (lep->data != NULL) {
511     sprintf(errmsg, "duplicate modifier '%s'", modn);
512     error(USER, errmsg);
513     }
514     if (nmods >= MAXMODLIST)
515     error(USER, "too many modifiers");
516     modname[nmods++] = modn; /* XXX assumes static string */
517     lep->key = modn; /* XXX assumes static string */
518     mp = (MODCONT *)malloc(sizeof(MODCONT));
519     if (mp == NULL)
520     error(SYSTEM, "out of memory in addmodifier");
521     mp->outspec = outf; /* XXX assumes static string */
522     mp->modname = modn; /* XXX assumes static string */
523     if (binv != NULL)
524     mp->binv = eparse(binv);
525     else
526     mp->binv = eparse("0");
527     mp->nbins = 1;
528     setcolor(mp->cbin[0], 0., 0., 0.);
529 greg 1.31 if (mp->binv->type == NUM) /* assume one bin if constant */
530     bincnt = 1;
531     else if (bincnt > 1)
532     mp = growmodifier(mp, bincnt);
533 greg 1.32 lep->data = (char *)mp;
534     /* allocate output streams */
535     for (i = outf==NULL || outf[0]=='!' ? 0 : bincnt; i--; )
536     getostream(mp->outspec, mp->modname, i, 1);
537 greg 1.1 return mp;
538     }
539    
540 greg 1.17 /* add modifiers from a file list */
541     void
542 greg 1.31 addmodfile(char *fname, char *outf, char *binv, int bincnt)
543 greg 1.17 {
544     char *mname[MAXMODLIST];
545     int i;
546 greg 1.20 /* find the file & store strings */
547     if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) {
548     sprintf(errmsg, "cannot find modifier file '%s'", fname);
549     error(SYSTEM, errmsg);
550     }
551 greg 1.17 for (i = 0; mname[i]; i++) /* add each one */
552 greg 1.31 addmodifier(mname[i], outf, binv, bincnt);
553 greg 1.17 }
554    
555 greg 1.1 /* put string to stderr */
556     void
557     eputs(char *s)
558     {
559     static int midline = 0;
560    
561     if (!*s) return;
562     if (!midline) {
563     fputs(progname, stderr);
564     fputs(": ", stderr);
565     }
566     fputs(s, stderr);
567     midline = s[strlen(s)-1] != '\n';
568     }
569    
570 greg 1.14 /* construct output file name and return flags whether modifier/bin present */
571     int
572     ofname(char *oname, const char *ospec, const char *mname, int bn)
573     {
574     const char *mnp = NULL;
575     const char *bnp = NULL;
576     const char *cp;
577    
578     if (ospec == NULL)
579     return -1;
580     for (cp = ospec; *cp; cp++) /* check format position(s) */
581     if (*cp == '%') {
582     do
583     ++cp;
584     while (isdigit(*cp));
585     switch (*cp) {
586     case '%':
587     break;
588     case 's':
589     if (mnp != NULL)
590     return -1;
591     mnp = cp;
592     break;
593     case 'd':
594     if (bnp != NULL)
595     return -1;
596     bnp = cp;
597     break;
598     default:
599     return -1;
600     }
601     }
602     if (mnp != NULL) { /* create file name */
603     if (bnp != NULL) {
604     if (bnp > mnp)
605     sprintf(oname, ospec, mname, bn);
606     else
607     sprintf(oname, ospec, bn, mname);
608     return OF_MODIFIER|OF_BIN;
609     }
610     sprintf(oname, ospec, mname);
611     return OF_MODIFIER;
612     }
613     if (bnp != NULL) {
614     sprintf(oname, ospec, bn);
615     return OF_BIN;
616     }
617     strcpy(oname, ospec);
618     return 0;
619     }
620    
621 greg 1.1 /* write header to the given output stream */
622     void
623 greg 1.14 printheader(FILE *fout, const char *info)
624 greg 1.1 {
625     extern char VersionID[];
626     FILE *fin = fopen(octree, "r");
627    
628     if (fin == NULL)
629     quit(1);
630 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
631 greg 1.1 fclose(fin);
632     printargs(gargc-1, gargv, fout); /* add our command */
633     fprintf(fout, "SOFTWARE= %s\n", VersionID);
634     fputnow(fout);
635 greg 1.14 if (info != NULL) /* add extra info if given */
636     fputs(info, fout);
637 greg 1.1 switch (outfmt) { /* add output format */
638     case 'a':
639     fputformat("ascii", fout);
640     break;
641     case 'f':
642     fputformat("float", fout);
643     break;
644     case 'd':
645     fputformat("double", fout);
646     break;
647     case 'c':
648     fputformat(COLRFMT, fout);
649     break;
650     }
651     fputc('\n', fout);
652 greg 1.30 }
653    
654     /* write resolution string to given output stream */
655     void
656     printresolu(FILE *fout)
657     {
658 greg 1.1 if (xres > 0) {
659     if (yres > 0) /* resolution string */
660     fprtresolu(xres, yres, fout);
661     fflush(fout);
662     }
663     }
664    
665 greg 1.32 /* Get output stream pointer (open and write header if new and noopen==0) */
666 greg 1.31 STREAMOUT *
667 greg 1.32 getostream(const char *ospec, const char *mname, int bn, int noopen)
668 greg 1.31 {
669     static STREAMOUT stdos;
670     int ofl;
671     char oname[1024];
672     LUENT *lep;
673     STREAMOUT *sop;
674 greg 1.1
675     if (ospec == NULL) { /* use stdout? */
676 greg 1.32 if (!noopen && !using_stdout) {
677 greg 1.31 stdos.reclen = 0;
678 greg 1.10 if (outfmt != 'a')
679     SET_FILE_BINARY(stdout);
680     if (header)
681 greg 1.14 printheader(stdout, NULL);
682 greg 1.30 printresolu(stdout);
683 greg 1.31 using_stdout = 1;
684 greg 1.10 }
685 greg 1.31 stdos.ofp = stdout;
686 greg 1.32 stdos.reclen += noopen;
687 greg 1.31 return &stdos;
688 greg 1.1 }
689 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
690     if (ofl < 0) {
691     sprintf(errmsg, "bad output format '%s'", ospec);
692     error(USER, errmsg);
693     }
694     lep = lu_find(&ofiletab, oname); /* look it up */
695 greg 1.1 if (lep->key == NULL) /* new entry */
696 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
697 greg 1.31 sop = (STREAMOUT *)lep->data;
698     if (sop == NULL) { /* allocate stream */
699     sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
700     if (sop == NULL)
701     error(SYSTEM, "out of memory in getostream");
702     sop->reclen = oname[0] == '!' ? CNT_PIPE : 0;
703 greg 1.32 sop->ofp = NULL; /* open iff noopen==0 */
704 greg 1.31 lep->data = (char *)sop;
705     }
706 greg 1.32 if (!noopen && sop->ofp == NULL) { /* open output stream */
707 greg 1.2 int i;
708 greg 1.14 if (oname[0] == '!') /* output to command */
709 greg 1.31 sop->ofp = popen(oname+1, "w");
710 greg 1.10 else
711 greg 1.31 sop->ofp = fopen(oname, "w");
712     if (sop->ofp == NULL) {
713 greg 1.14 sprintf(errmsg, "cannot open '%s' for writing", oname);
714 greg 1.1 error(SYSTEM, errmsg);
715     }
716 greg 1.10 if (outfmt != 'a')
717 greg 1.31 SET_FILE_BINARY(sop->ofp);
718 greg 1.14 if (header) {
719     char info[512];
720     char *cp = info;
721 greg 1.32 if (ofl & OF_MODIFIER || sop->reclen == 1) {
722 greg 1.30 sprintf(cp, "MODIFIER=%s\n", mname);
723     while (*cp) ++cp;
724     }
725 greg 1.14 if (ofl & OF_BIN) {
726     sprintf(cp, "BIN=%d\n", bn);
727     while (*cp) ++cp;
728     }
729     *cp = '\0';
730 greg 1.31 printheader(sop->ofp, info);
731 greg 1.14 }
732 greg 1.31 printresolu(sop->ofp);
733 greg 1.2 /* play catch-up */
734     for (i = 0; i < lastdone; i++) {
735     static const DCOLOR nocontrib = BLKCOLOR;
736 greg 1.31 put_contrib(nocontrib, sop->ofp);
737 greg 1.2 if (outfmt == 'a')
738 greg 1.31 putc('\n', sop->ofp);
739 greg 1.2 }
740     if (xres > 0)
741 greg 1.31 fflush(sop->ofp);
742 greg 1.1 }
743 greg 1.32 if (sop->reclen != CNT_PIPE) /* add to length if noopen */
744     sop->reclen += noopen;
745 greg 1.31 return sop; /* return open stream */
746 greg 1.1 }
747    
748     /* read input ray into buffer */
749     int
750     getinp(char *buf, FILE *fp)
751     {
752 greg 1.4 char *cp;
753     int i;
754    
755 greg 1.1 switch (inpfmt) {
756     case 'a':
757 greg 1.4 cp = buf; /* make sure we get 6 floats */
758     for (i = 0; i < 6; i++) {
759     if (fgetword(cp, buf+127-cp, fp) == NULL)
760     return 0;
761     if ((cp = fskip(cp)) == NULL || *cp)
762     return 0;
763     *cp++ = ' ';
764     }
765     getc(fp); /* get/put eol */
766     *cp-- = '\0'; *cp = '\n';
767 greg 1.1 return strlen(buf);
768     case 'f':
769     if (fread(buf, sizeof(float), 6, fp) < 6)
770     return 0;
771     return sizeof(float)*6;
772     case 'd':
773     if (fread(buf, sizeof(double), 6, fp) < 6)
774     return 0;
775     return sizeof(double)*6;
776     }
777     error(INTERNAL, "botched input format");
778     return 0; /* pro forma return */
779     }
780    
781 greg 1.2 static float rparams[9]; /* traced ray parameters */
782 greg 1.1
783     /* return channel (ray) value */
784     double
785     chanvalue(int n)
786     {
787     if (--n < 0 || n >= 6)
788     error(USER, "illegal channel number ($N)");
789 greg 1.2 return rparams[n+3];
790 greg 1.1 }
791    
792 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
793 greg 1.1 void
794 greg 1.2 add_contrib(const char *modn)
795 greg 1.1 {
796     LUENT *le = lu_find(&modconttab, modn);
797     MODCONT *mp = (MODCONT *)le->data;
798     int bn;
799    
800     if (mp == NULL) {
801     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
802     error(USER, errmsg);
803     }
804 greg 1.2 eclock++; /* get bin number */
805 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
806     if (bn <= 0)
807     bn = 0;
808 greg 1.31 else if (bn >= mp->nbins) /* new bin */
809     le->data = (char *)(mp = growmodifier(mp, bn+1));
810 greg 1.2 addcolor(mp->cbin[bn], rparams);
811 greg 1.1 }
812    
813     /* output newline to ASCII file and/or flush as requested */
814     static int
815     puteol(const LUENT *e, void *p)
816     {
817 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
818 greg 1.1
819     if (outfmt == 'a')
820 greg 1.31 putc('\n', sop->ofp);
821 greg 1.1 if (!waitflush)
822 greg 1.31 fflush(sop->ofp);
823     if (ferror(sop->ofp)) {
824 greg 1.1 sprintf(errmsg, "write error on file '%s'", e->key);
825     error(SYSTEM, errmsg);
826     }
827     return 0;
828     }
829    
830 greg 1.2 /* put out ray contribution to file */
831     void
832 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
833 greg 1.2 {
834     float fv[3];
835     COLR cv;
836    
837     switch (outfmt) {
838     case 'a':
839     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
840     break;
841     case 'f':
842     fv[0] = cnt[0];
843     fv[1] = cnt[1];
844     fv[2] = cnt[2];
845     fwrite(fv, sizeof(float), 3, fout);
846     break;
847     case 'd':
848     fwrite(cnt, sizeof(double), 3, fout);
849     break;
850     case 'c':
851     setcolr(cv, cnt[0], cnt[1], cnt[2]);
852     fwrite(cv, sizeof(cv), 1, fout);
853     break;
854     default:
855     error(INTERNAL, "botched output format");
856     }
857     }
858    
859 greg 1.1 /* output ray tallies and clear for next primary */
860     void
861     done_contrib(void)
862     {
863 greg 1.31 int i, j;
864     MODCONT *mp;
865     STREAMOUT *sop;
866 greg 1.1 /* output modifiers in order */
867     for (i = 0; i < nmods; i++) {
868     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
869 greg 1.31 sop = getostream(mp->outspec, mp->modname, 0,0);
870     put_contrib(mp->cbin[0], sop->ofp);
871 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
872 greg 1.31 sop == getostream(mp->outspec, mp->modname, 1,0))
873 greg 1.12 for (j = 1; j < mp->nbins; j++)
874 greg 1.31 put_contrib(mp->cbin[j], sop->ofp);
875 greg 1.12 else
876     for (j = 1; j < mp->nbins; j++)
877 greg 1.14 put_contrib(mp->cbin[j],
878 greg 1.31 getostream(mp->outspec,mp->modname,j,0)->ofp);
879 greg 1.1 /* clear for next ray tree */
880 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
881 greg 1.1 }
882     --waitflush; /* terminate records */
883     lu_doall(&ofiletab, puteol, NULL);
884 greg 1.2 if (using_stdout & (outfmt == 'a'))
885     putc('\n', stdout);
886     if (!waitflush) {
887 greg 1.1 waitflush = xres;
888 greg 1.2 if (using_stdout)
889     fflush(stdout);
890     }
891 greg 1.1 }
892    
893 greg 1.3 /* queue completed ray tree produced by rtrace process */
894     void
895     queue_raytree(struct rtproc *rtp)
896     {
897     struct rtproc *rtu, *rtl = NULL;
898     /* insert following ray order */
899     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
900     if (rtp->raynum < rtu->raynum)
901     break;
902     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
903     if (rtu == NULL)
904     error(SYSTEM, "out of memory in queue_raytree");
905     *rtu = *rtp;
906     if (rtl == NULL) {
907     rtu->next = rt_unproc;
908     rt_unproc = rtu;
909     } else {
910     rtu->next = rtl->next;
911     rtl->next = rtu;
912     }
913     rtp->raynum = 0; /* clear path for next ray tree */
914     rtp->bsiz = 0;
915     rtp->buf = NULL;
916     rtp->nbr = 0;
917     }
918    
919     /* process completed ray trees from our queue */
920 greg 1.1 void
921 greg 1.3 process_queue(void)
922 greg 1.1 {
923 greg 1.3 char modname[128];
924     /* ray-ordered queue */
925     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
926     struct rtproc *rtp = rt_unproc;
927 greg 1.2 int n = rtp->nbr;
928 greg 1.1 const char *cp = rtp->buf;
929     while (n > 0) { /* process rays */
930 greg 1.2 register char *mnp = modname;
931 greg 1.1 /* skip leading tabs */
932     while (n > 0 && *cp == '\t') {
933     cp++; n--;
934     }
935 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
936     error(USER, "bad modifier name from rtrace");
937     /* get modifier name */
938 greg 1.1 while (n > 0 && *cp != '\t') {
939     *mnp++ = *cp++; n--;
940     }
941     *mnp = '\0';
942 greg 1.2 cp++; n--; /* eat following tab */
943 greg 1.1 if (n < (int)(sizeof(float)*9))
944     error(USER, "incomplete ray value from rtrace");
945     /* add ray contribution */
946 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
947 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
948 greg 1.2 add_contrib(modname);
949 greg 1.1 }
950     done_contrib(); /* sum up contributions & output */
951     lastdone = rtp->raynum;
952 greg 1.3 free(rtp->buf); /* free up buffer space */
953     rt_unproc = rtp->next;
954     free(rtp); /* done with this ray tree */
955 greg 1.1 }
956     }
957    
958     /* wait for rtrace process to finish with ray tree */
959     struct rtproc *
960     wait_rproc(void)
961     {
962     struct rtproc *rtfree = NULL;
963     fd_set readset, errset;
964     int nr;
965     struct rtproc *rt;
966     int n;
967    
968     do {
969     nr = 0; /* prepare select call */
970     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
971     for (rt = &rt0; rt != NULL; rt = rt->next) {
972     if (rt->raynum) {
973     FD_SET(rt->pd.r, &readset);
974     ++nr;
975     }
976     FD_SET(rt->pd.r, &errset);
977     if (rt->pd.r >= n)
978     n = rt->pd.r + 1;
979     }
980     if (!nr) /* no rays pending */
981     break;
982     if (nr > 1) { /* call select for multiple proc's */
983     errno = 0;
984     if (select(n, &readset, NULL, &errset, NULL) < 0)
985     error(SYSTEM, "select call error in wait_rproc()");
986     } else
987     FD_ZERO(&errset);
988     nr = 0;
989     for (rt = &rt0; rt != NULL; rt = rt->next) {
990     if (!FD_ISSET(rt->pd.r, &readset) &&
991     !FD_ISSET(rt->pd.r, &errset))
992     continue;
993     if (rt->buf == NULL) {
994     rt->bsiz = treebufsiz;
995     rt->buf = (char *)malloc(treebufsiz);
996 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
997 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
998     rt->bsiz = treebufsiz;
999     else
1000 greg 1.28 treebufsiz = rt->bsiz += BUFSIZ;
1001 greg 1.1 rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1002     }
1003     if (rt->buf == NULL)
1004     error(SYSTEM, "out of memory in wait_rproc");
1005 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1006     if (nr <= 0)
1007 greg 1.1 error(USER, "rtrace process died");
1008 greg 1.2 rt->nbr += nr; /* advance & check */
1009     if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
1010     "~\t~\t", 4)) {
1011     rt->nbr -= 4; /* elide terminator */
1012 greg 1.3 queue_raytree(rt);
1013 greg 1.1 rtfree = rt; /* ready for next ray */
1014     }
1015     }
1016     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
1017     return rtfree;
1018     }
1019    
1020     /* return next available rtrace process */
1021     struct rtproc *
1022     get_rproc(void)
1023     {
1024     struct rtproc *rtp;
1025     /* check for idle rtrace */
1026     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
1027     if (!rtp->raynum)
1028     return rtp;
1029     return wait_rproc(); /* need to wait for one */
1030     }
1031    
1032     /* trace ray contributions (main loop) */
1033     void
1034 greg 1.5 trace_contribs(FILE *fin)
1035 greg 1.1 {
1036     char inpbuf[128];
1037     int iblen;
1038     struct rtproc *rtp;
1039     /* loop over input */
1040     while ((iblen = getinp(inpbuf, fin)) > 0) {
1041 greg 1.29 if (lastray+1 < lastray || /* need reset? */
1042     queue_length() > 5*nrtprocs()) {
1043 greg 1.1 while (wait_rproc() != NULL)
1044 greg 1.3 process_queue();
1045 greg 1.1 lastdone = lastray = 0;
1046     }
1047     rtp = get_rproc(); /* get avail. rtrace process */
1048 greg 1.3 rtp->raynum = ++lastray; /* assign ray to it */
1049 greg 1.1 writebuf(rtp->pd.w, inpbuf, iblen);
1050 greg 1.14 if (raysleft && !--raysleft)
1051 greg 1.3 break;
1052     process_queue(); /* catch up with results */
1053 greg 1.1 }
1054     while (wait_rproc() != NULL) /* process outstanding rays */
1055 greg 1.3 process_queue();
1056 greg 1.14 if (raysleft)
1057 greg 1.2 error(USER, "unexpected EOF on input");
1058 greg 1.14 lu_done(&ofiletab); /* close output files */
1059     }
1060    
1061     /* seek on the given output file */
1062     static int
1063     myseeko(const LUENT *e, void *p)
1064     {
1065 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
1066     off_t nbytes = *(off_t *)p;
1067    
1068     if (sop->reclen > 1)
1069     nbytes = nbytes * sop->reclen;
1070     if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1071 greg 1.14 sprintf(errmsg, "seek error on file '%s'", e->key);
1072     error(SYSTEM, errmsg);
1073     }
1074     }
1075    
1076     /* recover output if possible */
1077     void
1078     recover_output(FILE *fin)
1079     {
1080 greg 1.31 off_t lastout = -1;
1081     int outvsiz, recsiz;
1082     char *outvfmt;
1083     int i, j;
1084     MODCONT *mp;
1085     int ofl;
1086     char oname[1024];
1087     LUENT *ment, *oent;
1088     STREAMOUT sout;
1089     off_t nvals;
1090     int xr, yr;
1091 greg 1.14
1092     switch (outfmt) {
1093     case 'a':
1094     error(USER, "cannot recover ASCII output");
1095     return;
1096     case 'f':
1097     outvsiz = sizeof(float)*3;
1098     outvfmt = "float";
1099     break;
1100     case 'd':
1101     outvsiz = sizeof(double)*3;
1102     outvfmt = "double";
1103     break;
1104     case 'c':
1105     outvsiz = sizeof(COLR);
1106     outvfmt = COLRFMT;
1107     break;
1108     default:
1109     error(INTERNAL, "botched output format");
1110     return;
1111     }
1112     /* check modifier outputs */
1113     for (i = 0; i < nmods; i++) {
1114     ment = lu_find(&modconttab,modname[i]);
1115     mp = (MODCONT *)ment->data;
1116     if (mp->outspec == NULL)
1117     error(USER, "cannot recover from stdout");
1118 greg 1.31 if (mp->outspec[0] == '!')
1119     error(USER, "cannot recover from command");
1120 greg 1.14 for (j = 0; ; j++) { /* check each bin's file */
1121     ofl = ofname(oname, mp->outspec, mp->modname, j);
1122     if (ofl < 0)
1123     error(USER, "bad output file specification");
1124     oent = lu_find(&ofiletab, oname);
1125 greg 1.31 if (oent->data != NULL) {
1126     sout = *(STREAMOUT *)oent->data;
1127     } else {
1128     sout.reclen = 0;
1129     sout.ofp = NULL;
1130     }
1131     if (sout.ofp != NULL) { /* already open? */
1132 greg 1.14 if (ofl & OF_BIN)
1133     continue;
1134     break;
1135     }
1136     /* open output */
1137 greg 1.31 sout.ofp = fopen(oname, "rb+");
1138     if (sout.ofp == NULL) {
1139 greg 1.23 if (j)
1140     break; /* assume end of modifier */
1141     sprintf(errmsg, "missing recover file '%s'",
1142     oname);
1143     error(USER, errmsg);
1144     }
1145 greg 1.31 nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1146 greg 1.14 if (nvals <= 0) {
1147     lastout = 0; /* empty output, quit here */
1148 greg 1.31 fclose(sout.ofp);
1149 greg 1.14 break;
1150     }
1151 greg 1.32 if (sout.reclen == CNT_UNKNOWN) {
1152 greg 1.31 if (!(ofl & OF_BIN)) {
1153 greg 1.14 sprintf(errmsg,
1154 greg 1.32 "need -bn to recover file '%s'",
1155 greg 1.14 oname);
1156 greg 1.32 error(USER, errmsg);
1157 greg 1.14 }
1158 greg 1.31 recsiz = outvsiz;
1159     } else
1160     recsiz = outvsiz * sout.reclen;
1161    
1162     lseek(fileno(sout.ofp), 0, SEEK_SET);
1163     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1164     sprintf(errmsg, "format mismatch for '%s'",
1165     oname);
1166     error(USER, errmsg);
1167     }
1168     if ((xres > 0) & (yres > 0) &&
1169     (!fscnresolu(&xr, &yr, sout.ofp) ||
1170     xr != xres ||
1171     yr != yres)) {
1172     sprintf(errmsg, "resolution mismatch for '%s'",
1173     oname);
1174     error(USER, errmsg);
1175 greg 1.14 }
1176 greg 1.31 nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1177     if ((lastout < 0) | (nvals < lastout))
1178 greg 1.14 lastout = nvals;
1179 greg 1.31 if (oent->key == NULL) /* new entry */
1180 greg 1.14 oent->key = strcpy((char *)
1181     malloc(strlen(oname)+1), oname);
1182 greg 1.31 if (oent->data == NULL)
1183     oent->data = (char *)malloc(sizeof(STREAMOUT));
1184     *(STREAMOUT *)oent->data = sout;
1185 greg 1.14 if (!(ofl & OF_BIN))
1186     break; /* no bin separation */
1187     }
1188     if (!lastout) { /* empty output */
1189 greg 1.16 error(WARNING, "no previous data to recover");
1190 greg 1.14 lu_done(&ofiletab); /* reclose all outputs */
1191     return;
1192     }
1193 greg 1.31 if (j > mp->nbins) /* reallocate modifier bins */
1194     ment->data = (char *)(mp = growmodifier(mp, j));
1195 greg 1.14 }
1196 greg 1.15 if (lastout < 0) {
1197 greg 1.16 error(WARNING, "no output files to recover");
1198 greg 1.15 return;
1199     }
1200 greg 1.24 if (raysleft && lastout >= raysleft) {
1201     error(WARNING, "output appears to be complete");
1202     /* XXX should read & discard input? */
1203     quit(0);
1204     }
1205 greg 1.14 /* seek on all files */
1206     nvals = lastout * outvsiz;
1207     lu_doall(&ofiletab, myseeko, &nvals);
1208 greg 1.28 /* skip repeated input */
1209 greg 1.14 for (nvals = 0; nvals < lastout; nvals++)
1210     if (getinp(oname, fin) <= 0)
1211     error(USER, "unexpected EOF on input");
1212     lastray = lastdone = (unsigned long)lastout;
1213     if (raysleft)
1214     raysleft -= lastray;
1215 greg 1.1 }