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root/radiance/ray/src/util/rtcontrib.c
Revision: 1.54
Committed: Sun Jun 14 18:21:58 2009 UTC (14 years, 10 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.53: +16 -11 lines
Log Message: 
Added ability to specify constant name in rtcontrib -bn option

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.54 static const char RCSid[] = "$Id: rtcontrib.c,v 1.53 2009/06/11 18:32:24 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 1.45 * 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     int bsiz; /* ray tree buffer length */
96     char *buf; /* ray tree buffer */
97     int 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 1.40 #define RTCOEFF "-o~~TmWdp" /* compute coefficients only */
111     #define RTCONTRIB "-o~~TmVdp" /* compute ray contributions */
112    
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 1.1 char sxres[16], syres[16];
382     char *rtpath;
383 greg 1.49 printf("-n %-2d\t\t\t\t# number of processes\n", nprocs);
384     printf("-c %-5d\t\t\t# accumulated rays per record\n",
385     accumulate);
386 greg 1.40 printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
387     contrib ? "contributions" : "coefficients");
388 greg 1.1 fflush(stdout); /* report OUR options */
389     rtargv[rtargc++] = header ? "-h+" : "-h-";
390     sprintf(fmt, "-f%c%c", inpfmt, outfmt);
391     rtargv[rtargc++] = fmt;
392     rtargv[rtargc++] = "-x";
393     sprintf(sxres, "%d", xres);
394     rtargv[rtargc++] = sxres;
395     rtargv[rtargc++] = "-y";
396     sprintf(syres, "%d", yres);
397     rtargv[rtargc++] = syres;
398     rtargv[rtargc++] = "-defaults";
399     rtargv[rtargc] = NULL;
400     rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
401     if (rtpath == NULL) {
402     eputs(rtargv[0]);
403     eputs(": command not found\n");
404     exit(1);
405     }
406     execv(rtpath, rtargv);
407     perror(rtpath); /* execv() should not return */
408     exit(1);
409 greg 1.5 }
410     if (nprocs > 1) { /* add persist file if parallel */
411 greg 1.44 if (persist_state == PERSIST_SINGLE)
412     error(USER, "use -PP option for multiple processes");
413     if (persist_state == PERSIST_NONE) {
414     rtargv[rtargc++] = "-PP";
415     rtargv[rtargc++] = mktemp(persistfn);
416     persist_state = PERSIST_OURS;
417     }
418 greg 1.2 }
419 greg 1.1 /* add format string */
420     sprintf(fmt, "-f%cf", inpfmt);
421     rtargv[rtargc++] = fmt;
422     /* octree argument is last */
423 greg 1.2 if (i <= 0 || i != argc-1 || argv[i][0] == '-')
424     error(USER, "missing octree argument");
425     rtargv[rtargc++] = octree = argv[i];
426 greg 1.1 rtargv[rtargc] = NULL;
427 greg 1.46 /* start rtrace & recover if requested */
428 greg 1.1 init(nprocs);
429 greg 1.46 /* compute contributions */
430     trace_contribs(stdin);
431     /* clean up */
432 greg 1.1 quit(0);
433     }
434    
435 schorsch 1.26 #ifndef SIGALRM
436     #define SIGALRM SIGTERM
437     #endif
438 greg 1.1 /* kill persistent rtrace process */
439     static void
440     killpersist(void)
441     {
442     FILE *fp = fopen(persistfn, "r");
443 schorsch 1.26 RT_PID pid;
444 greg 1.1
445     if (fp == NULL)
446     return;
447     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
448     unlink(persistfn);
449     fclose(fp);
450     }
451    
452     /* close rtrace processes and clean up */
453     int
454     done_rprocs(struct rtproc *rtp)
455     {
456     int st0, st1 = 0;
457    
458     if (rtp->next != NULL) { /* close last opened first! */
459     st1 = done_rprocs(rtp->next);
460     free((void *)rtp->next);
461     rtp->next = NULL;
462     }
463     st0 = close_process(&rtp->pd);
464     if (st0 < 0)
465     error(WARNING, "unknown return status from rtrace process");
466     else if (st0 > 0)
467     return(st0);
468     return(st1);
469     }
470    
471     /* exit with status */
472     void
473     quit(int status)
474     {
475     int rtstat;
476    
477 greg 1.45 if (persist_state == PERSIST_OURS) /* terminate waiting rtrace */
478 greg 1.1 killpersist();
479     /* clean up rtrace process(es) */
480     rtstat = done_rprocs(&rt0);
481     if (status == 0)
482     status = rtstat;
483     exit(status); /* flushes all output streams */
484     }
485    
486 greg 1.5 /* start rtrace processes and initialize */
487 greg 1.1 void
488     init(int np)
489     {
490     struct rtproc *rtp;
491     int i;
492     int maxbytes;
493 greg 1.2 /* make sure we have something to do */
494     if (!nmods)
495     error(USER, "No modifiers specified");
496 greg 1.1 /* assign ray variables */
497     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
498     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
499     /* set up signal handling */
500 greg 1.3 signal(SIGINT, quit);
501     #ifdef SIGHUP
502     signal(SIGHUP, quit);
503     #endif
504     #ifdef SIGTERM
505     signal(SIGTERM, quit);
506     #endif
507     #ifdef SIGPIPE
508 greg 1.1 signal(SIGPIPE, quit);
509     #endif
510     rtp = &rt0; /* start rtrace process(es) */
511     for (i = 0; i++ < np; ) {
512     errno = 0;
513     maxbytes = open_process(&rtp->pd, rtargv);
514     if (maxbytes == 0) {
515     eputs(rtargv[0]);
516     eputs(": command not found\n");
517     exit(1);
518     }
519     if (maxbytes < 0)
520     error(SYSTEM, "cannot start rtrace process");
521     if (maxbytes > treebufsiz)
522     treebufsiz = maxbytes;
523 greg 1.2 rtp->raynum = 0;
524 greg 1.1 rtp->bsiz = 0;
525     rtp->buf = NULL;
526 greg 1.2 rtp->nbr = 0;
527 greg 1.1 if (i == np) /* last process? */
528     break;
529     if (i == 1)
530     sleep(2); /* wait for persist file */
531     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
532     if (rtp->next == NULL)
533     error(SYSTEM, "out of memory in init");
534     rtp = rtp->next;
535     }
536     rtp->next = NULL; /* terminate list */
537     if (yres > 0) {
538     if (xres > 0)
539 greg 1.14 raysleft = (unsigned long)xres*yres;
540 greg 1.1 else
541     raysleft = yres;
542     } else
543     raysleft = 0;
544 greg 1.49 if ((account = accumulate) > 0)
545     raysleft *= accumulate;
546 greg 1.1 waitflush = xres;
547 greg 1.46 if (!recover)
548     return;
549     /* recover previous values */
550 greg 1.49 if (accumulate <= 0)
551 greg 1.46 reload_output();
552     else
553     recover_output(stdin);
554 greg 1.1 }
555    
556 greg 1.31 /* grow modifier to accommodate more bins */
557     MODCONT *
558     growmodifier(MODCONT *mp, int nb)
559     {
560     if (nb <= mp->nbins)
561     return mp;
562     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
563     if (mp == NULL)
564     error(SYSTEM, "out of memory in growmodifier");
565     memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
566     mp->nbins = nb;
567     return mp;
568     }
569    
570 greg 1.1 /* add modifier to our list to track */
571     MODCONT *
572 greg 1.31 addmodifier(char *modn, char *outf, char *binv, int bincnt)
573 greg 1.1 {
574     LUENT *lep = lu_find(&modconttab, modn);
575     MODCONT *mp;
576 greg 1.32 int i;
577 greg 1.1
578     if (lep->data != NULL) {
579     sprintf(errmsg, "duplicate modifier '%s'", modn);
580     error(USER, errmsg);
581     }
582     if (nmods >= MAXMODLIST)
583 greg 1.54 error(INTERNAL, "too many modifiers");
584 greg 1.1 modname[nmods++] = modn; /* XXX assumes static string */
585     lep->key = modn; /* XXX assumes static string */
586     mp = (MODCONT *)malloc(sizeof(MODCONT));
587     if (mp == NULL)
588     error(SYSTEM, "out of memory in addmodifier");
589     mp->outspec = outf; /* XXX assumes static string */
590     mp->modname = modn; /* XXX assumes static string */
591 greg 1.54 if (binv == NULL)
592     binv = "0"; /* use single bin if unspecified */
593     mp->binv = eparse(binv);
594     if (mp->binv->type == NUM) { /* check value if constant */
595     bincnt = (int)(evalue(mp->binv) + 1.5);
596     if (bincnt != 1) {
597     sprintf(errmsg, "illegal non-zero constant for bin (%s)",
598     binv);
599     error(USER, errmsg);
600     }
601     }
602     mp->nbins = 1; /* initialize results holder */
603 greg 1.1 setcolor(mp->cbin[0], 0., 0., 0.);
604 greg 1.54 if (bincnt > 1)
605 greg 1.31 mp = growmodifier(mp, bincnt);
606 greg 1.32 lep->data = (char *)mp;
607     /* allocate output streams */
608 greg 1.45 for (i = bincnt; i-- > 0; )
609 greg 1.32 getostream(mp->outspec, mp->modname, i, 1);
610 greg 1.1 return mp;
611     }
612    
613 greg 1.17 /* add modifiers from a file list */
614     void
615 greg 1.31 addmodfile(char *fname, char *outf, char *binv, int bincnt)
616 greg 1.17 {
617     char *mname[MAXMODLIST];
618     int i;
619 greg 1.20 /* find the file & store strings */
620     if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) {
621     sprintf(errmsg, "cannot find modifier file '%s'", fname);
622     error(SYSTEM, errmsg);
623     }
624 greg 1.17 for (i = 0; mname[i]; i++) /* add each one */
625 greg 1.31 addmodifier(mname[i], outf, binv, bincnt);
626 greg 1.17 }
627    
628 greg 1.1 /* put string to stderr */
629     void
630     eputs(char *s)
631     {
632     static int midline = 0;
633    
634     if (!*s) return;
635     if (!midline) {
636     fputs(progname, stderr);
637     fputs(": ", stderr);
638     }
639     fputs(s, stderr);
640     midline = s[strlen(s)-1] != '\n';
641     }
642    
643 greg 1.14 /* construct output file name and return flags whether modifier/bin present */
644     int
645     ofname(char *oname, const char *ospec, const char *mname, int bn)
646     {
647     const char *mnp = NULL;
648     const char *bnp = NULL;
649     const char *cp;
650    
651     if (ospec == NULL)
652     return -1;
653     for (cp = ospec; *cp; cp++) /* check format position(s) */
654     if (*cp == '%') {
655     do
656     ++cp;
657     while (isdigit(*cp));
658     switch (*cp) {
659     case '%':
660     break;
661     case 's':
662     if (mnp != NULL)
663     return -1;
664     mnp = cp;
665     break;
666     case 'd':
667     if (bnp != NULL)
668     return -1;
669     bnp = cp;
670     break;
671     default:
672     return -1;
673     }
674     }
675     if (mnp != NULL) { /* create file name */
676     if (bnp != NULL) {
677     if (bnp > mnp)
678     sprintf(oname, ospec, mname, bn);
679     else
680     sprintf(oname, ospec, bn, mname);
681     return OF_MODIFIER|OF_BIN;
682     }
683     sprintf(oname, ospec, mname);
684     return OF_MODIFIER;
685     }
686     if (bnp != NULL) {
687     sprintf(oname, ospec, bn);
688     return OF_BIN;
689     }
690     strcpy(oname, ospec);
691     return 0;
692     }
693    
694 greg 1.1 /* write header to the given output stream */
695     void
696 greg 1.14 printheader(FILE *fout, const char *info)
697 greg 1.1 {
698     extern char VersionID[];
699     FILE *fin = fopen(octree, "r");
700    
701     if (fin == NULL)
702     quit(1);
703 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
704 greg 1.1 fclose(fin);
705     printargs(gargc-1, gargv, fout); /* add our command */
706     fprintf(fout, "SOFTWARE= %s\n", VersionID);
707     fputnow(fout);
708 greg 1.14 if (info != NULL) /* add extra info if given */
709     fputs(info, fout);
710 greg 1.1 switch (outfmt) { /* add output format */
711     case 'a':
712     fputformat("ascii", fout);
713     break;
714     case 'f':
715     fputformat("float", fout);
716     break;
717     case 'd':
718     fputformat("double", fout);
719     break;
720     case 'c':
721     fputformat(COLRFMT, fout);
722     break;
723     }
724     fputc('\n', fout);
725 greg 1.30 }
726    
727     /* write resolution string to given output stream */
728     void
729 greg 1.45 printresolu(FILE *fout, int xr, int yr)
730 greg 1.30 {
731 greg 1.45 if ((xr > 0) & (yr > 0)) /* resolution string */
732     fprtresolu(xr, yr, fout);
733     if (xres > 0) /* global flush flag */
734 greg 1.1 fflush(fout);
735     }
736    
737 greg 1.32 /* Get output stream pointer (open and write header if new and noopen==0) */
738 greg 1.31 STREAMOUT *
739 greg 1.32 getostream(const char *ospec, const char *mname, int bn, int noopen)
740 greg 1.31 {
741 greg 1.45 static const DCOLOR nocontrib = BLKCOLOR;
742 greg 1.31 static STREAMOUT stdos;
743     int ofl;
744     char oname[1024];
745     LUENT *lep;
746     STREAMOUT *sop;
747 greg 1.1
748     if (ospec == NULL) { /* use stdout? */
749 greg 1.32 if (!noopen && !using_stdout) {
750 greg 1.10 if (outfmt != 'a')
751     SET_FILE_BINARY(stdout);
752     if (header)
753 greg 1.14 printheader(stdout, NULL);
754 greg 1.45 printresolu(stdout, xres, yres);
755     stdos.xr = xres; stdos.yr = yres;
756 greg 1.31 using_stdout = 1;
757 greg 1.10 }
758 greg 1.31 stdos.ofp = stdout;
759 greg 1.32 stdos.reclen += noopen;
760 greg 1.31 return &stdos;
761 greg 1.1 }
762 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
763     if (ofl < 0) {
764     sprintf(errmsg, "bad output format '%s'", ospec);
765     error(USER, errmsg);
766     }
767     lep = lu_find(&ofiletab, oname); /* look it up */
768 greg 1.1 if (lep->key == NULL) /* new entry */
769 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
770 greg 1.31 sop = (STREAMOUT *)lep->data;
771     if (sop == NULL) { /* allocate stream */
772     sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
773     if (sop == NULL)
774     error(SYSTEM, "out of memory in getostream");
775 greg 1.45 sop->outpipe = oname[0] == '!';
776     sop->reclen = 0;
777 greg 1.32 sop->ofp = NULL; /* open iff noopen==0 */
778 greg 1.45 sop->xr = xres; sop->yr = yres;
779 greg 1.31 lep->data = (char *)sop;
780 greg 1.46 if (!sop->outpipe & !force_open & !recover &&
781     access(oname, F_OK) == 0) {
782 greg 1.45 errno = EEXIST; /* file exists */
783     goto openerr;
784     }
785 greg 1.31 }
786 greg 1.32 if (!noopen && sop->ofp == NULL) { /* open output stream */
787 greg 1.34 long i;
788 greg 1.14 if (oname[0] == '!') /* output to command */
789 greg 1.31 sop->ofp = popen(oname+1, "w");
790 greg 1.45 else /* else open file */
791 greg 1.31 sop->ofp = fopen(oname, "w");
792 greg 1.45 if (sop->ofp == NULL)
793     goto openerr;
794 greg 1.10 if (outfmt != 'a')
795 greg 1.31 SET_FILE_BINARY(sop->ofp);
796 greg 1.14 if (header) {
797     char info[512];
798     char *cp = info;
799 greg 1.32 if (ofl & OF_MODIFIER || sop->reclen == 1) {
800 greg 1.30 sprintf(cp, "MODIFIER=%s\n", mname);
801     while (*cp) ++cp;
802     }
803 greg 1.14 if (ofl & OF_BIN) {
804     sprintf(cp, "BIN=%d\n", bn);
805     while (*cp) ++cp;
806     }
807     *cp = '\0';
808 greg 1.31 printheader(sop->ofp, info);
809 greg 1.14 }
810 greg 1.49 if (accumulate > 0) { /* global resolution */
811 greg 1.47 sop->xr = xres; sop->yr = yres;
812     }
813 greg 1.45 printresolu(sop->ofp, sop->xr, sop->yr);
814 greg 1.2 /* play catch-up */
815 greg 1.49 for (i = accumulate > 0 ? lastdone/accumulate : 0; i--; ) {
816 greg 1.45 int j = sop->reclen;
817     if (j <= 0) j = 1;
818     while (j--)
819     put_contrib(nocontrib, sop->ofp);
820 greg 1.2 if (outfmt == 'a')
821 greg 1.31 putc('\n', sop->ofp);
822 greg 1.2 }
823     if (xres > 0)
824 greg 1.31 fflush(sop->ofp);
825 greg 1.1 }
826 greg 1.45 sop->reclen += noopen; /* add to length if noopen */
827     return sop; /* return output stream */
828     openerr:
829     sprintf(errmsg, "cannot open '%s' for writing", oname);
830     error(SYSTEM, errmsg);
831     return NULL; /* pro forma return */
832 greg 1.1 }
833    
834     /* read input ray into buffer */
835     int
836     getinp(char *buf, FILE *fp)
837     {
838 greg 1.45 double dv[3], *dvp;
839     float *fvp;
840 greg 1.4 char *cp;
841     int i;
842    
843 greg 1.1 switch (inpfmt) {
844     case 'a':
845 greg 1.4 cp = buf; /* make sure we get 6 floats */
846     for (i = 0; i < 6; i++) {
847     if (fgetword(cp, buf+127-cp, fp) == NULL)
848 greg 1.36 return -1;
849     if (i >= 3)
850     dv[i-3] = atof(cp);
851 greg 1.4 if ((cp = fskip(cp)) == NULL || *cp)
852 greg 1.36 return -1;
853 greg 1.4 *cp++ = ' ';
854     }
855     getc(fp); /* get/put eol */
856     *cp-- = '\0'; *cp = '\n';
857 greg 1.36 if (DOT(dv,dv) <= FTINY*FTINY)
858     return 0; /* dummy ray */
859 greg 1.1 return strlen(buf);
860     case 'f':
861     if (fread(buf, sizeof(float), 6, fp) < 6)
862 greg 1.36 return -1;
863 greg 1.45 fvp = (float *)buf + 3;
864     if (DOT(fvp,fvp) <= FTINY*FTINY)
865 greg 1.36 return 0; /* dummy ray */
866 greg 1.1 return sizeof(float)*6;
867     case 'd':
868     if (fread(buf, sizeof(double), 6, fp) < 6)
869 greg 1.36 return -1;
870 greg 1.45 dvp = (double *)buf + 3;
871     if (DOT(dvp,dvp) <= FTINY*FTINY)
872 greg 1.36 return 0; /* dummy ray */
873 greg 1.1 return sizeof(double)*6;
874     }
875     error(INTERNAL, "botched input format");
876 greg 1.36 return -1; /* pro forma return */
877 greg 1.1 }
878    
879 greg 1.2 static float rparams[9]; /* traced ray parameters */
880 greg 1.1
881     /* return channel (ray) value */
882     double
883     chanvalue(int n)
884     {
885     if (--n < 0 || n >= 6)
886     error(USER, "illegal channel number ($N)");
887 greg 1.2 return rparams[n+3];
888 greg 1.1 }
889    
890 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
891 greg 1.1 void
892 greg 1.2 add_contrib(const char *modn)
893 greg 1.1 {
894     LUENT *le = lu_find(&modconttab, modn);
895     MODCONT *mp = (MODCONT *)le->data;
896     int bn;
897    
898     if (mp == NULL) {
899     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
900     error(USER, errmsg);
901     }
902 greg 1.2 eclock++; /* get bin number */
903 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
904     if (bn <= 0)
905     bn = 0;
906 greg 1.31 else if (bn >= mp->nbins) /* new bin */
907     le->data = (char *)(mp = growmodifier(mp, bn+1));
908 greg 1.2 addcolor(mp->cbin[bn], rparams);
909 greg 1.1 }
910    
911     /* output newline to ASCII file and/or flush as requested */
912     static int
913     puteol(const LUENT *e, void *p)
914     {
915 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
916 greg 1.1
917     if (outfmt == 'a')
918 greg 1.31 putc('\n', sop->ofp);
919 greg 1.1 if (!waitflush)
920 greg 1.31 fflush(sop->ofp);
921     if (ferror(sop->ofp)) {
922 greg 1.1 sprintf(errmsg, "write error on file '%s'", e->key);
923     error(SYSTEM, errmsg);
924     }
925     return 0;
926     }
927    
928 greg 1.2 /* put out ray contribution to file */
929     void
930 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
931 greg 1.2 {
932     float fv[3];
933     COLR cv;
934    
935     switch (outfmt) {
936     case 'a':
937     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
938     break;
939     case 'f':
940 greg 1.46 copycolor(fv, cnt);
941 greg 1.2 fwrite(fv, sizeof(float), 3, fout);
942     break;
943     case 'd':
944     fwrite(cnt, sizeof(double), 3, fout);
945     break;
946     case 'c':
947     setcolr(cv, cnt[0], cnt[1], cnt[2]);
948     fwrite(cv, sizeof(cv), 1, fout);
949     break;
950     default:
951     error(INTERNAL, "botched output format");
952     }
953     }
954    
955 greg 1.45 /* output ray tallies and clear for next accumulation */
956 greg 1.1 void
957 greg 1.49 done_contrib(int navg)
958 greg 1.1 {
959 greg 1.49 double sf = 1.;
960 greg 1.31 int i, j;
961     MODCONT *mp;
962     STREAMOUT *sop;
963 greg 1.49 /* set average scaling */
964     if (navg > 1)
965     sf = 1. / (double)navg;
966 greg 1.1 /* output modifiers in order */
967     for (i = 0; i < nmods; i++) {
968     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
969 greg 1.49 if (navg > 1) /* average scaling */
970     for (j = mp->nbins; j--; )
971     scalecolor(mp->cbin[j], sf);
972 greg 1.31 sop = getostream(mp->outspec, mp->modname, 0,0);
973     put_contrib(mp->cbin[0], sop->ofp);
974 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
975 greg 1.31 sop == getostream(mp->outspec, mp->modname, 1,0))
976 greg 1.12 for (j = 1; j < mp->nbins; j++)
977 greg 1.31 put_contrib(mp->cbin[j], sop->ofp);
978 greg 1.12 else
979     for (j = 1; j < mp->nbins; j++)
980 greg 1.14 put_contrib(mp->cbin[j],
981 greg 1.31 getostream(mp->outspec,mp->modname,j,0)->ofp);
982 greg 1.45 /* clear for next time */
983 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
984 greg 1.1 }
985     --waitflush; /* terminate records */
986     lu_doall(&ofiletab, puteol, NULL);
987 greg 1.2 if (using_stdout & (outfmt == 'a'))
988     putc('\n', stdout);
989     if (!waitflush) {
990 greg 1.1 waitflush = xres;
991 greg 1.2 if (using_stdout)
992     fflush(stdout);
993     }
994 greg 1.1 }
995    
996 greg 1.3 /* queue completed ray tree produced by rtrace process */
997     void
998     queue_raytree(struct rtproc *rtp)
999     {
1000     struct rtproc *rtu, *rtl = NULL;
1001     /* insert following ray order */
1002     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
1003     if (rtp->raynum < rtu->raynum)
1004     break;
1005     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
1006     if (rtu == NULL)
1007     error(SYSTEM, "out of memory in queue_raytree");
1008     *rtu = *rtp;
1009     if (rtl == NULL) {
1010     rtu->next = rt_unproc;
1011     rt_unproc = rtu;
1012     } else {
1013     rtu->next = rtl->next;
1014     rtl->next = rtu;
1015     }
1016     rtp->raynum = 0; /* clear path for next ray tree */
1017     rtp->bsiz = 0;
1018     rtp->buf = NULL;
1019     rtp->nbr = 0;
1020     }
1021    
1022     /* process completed ray trees from our queue */
1023 greg 1.1 void
1024 greg 1.3 process_queue(void)
1025 greg 1.1 {
1026 greg 1.3 char modname[128];
1027     /* ray-ordered queue */
1028     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
1029     struct rtproc *rtp = rt_unproc;
1030 greg 1.2 int n = rtp->nbr;
1031 greg 1.1 const char *cp = rtp->buf;
1032     while (n > 0) { /* process rays */
1033 greg 1.2 register char *mnp = modname;
1034 greg 1.1 /* skip leading tabs */
1035     while (n > 0 && *cp == '\t') {
1036     cp++; n--;
1037     }
1038 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
1039     error(USER, "bad modifier name from rtrace");
1040     /* get modifier name */
1041 greg 1.40 while (n > 1 && *cp != '\t') {
1042     if (mnp - modname >= sizeof(modname)-2)
1043     error(INTERNAL, "modifier name too long");
1044 greg 1.1 *mnp++ = *cp++; n--;
1045     }
1046     *mnp = '\0';
1047 greg 1.2 cp++; n--; /* eat following tab */
1048 greg 1.1 if (n < (int)(sizeof(float)*9))
1049     error(USER, "incomplete ray value from rtrace");
1050     /* add ray contribution */
1051 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
1052 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
1053 greg 1.2 add_contrib(modname);
1054 greg 1.1 }
1055 greg 1.49 /* time to produce record? */
1056     if (account > 0 && !--account)
1057     done_contrib(account = accumulate);
1058 greg 1.1 lastdone = rtp->raynum;
1059 greg 1.36 if (rtp->buf != NULL) /* free up buffer space */
1060     free(rtp->buf);
1061 greg 1.3 rt_unproc = rtp->next;
1062     free(rtp); /* done with this ray tree */
1063 greg 1.1 }
1064     }
1065    
1066     /* wait for rtrace process to finish with ray tree */
1067     struct rtproc *
1068     wait_rproc(void)
1069     {
1070     struct rtproc *rtfree = NULL;
1071     fd_set readset, errset;
1072     int nr;
1073     struct rtproc *rt;
1074     int n;
1075    
1076     do {
1077     nr = 0; /* prepare select call */
1078     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
1079     for (rt = &rt0; rt != NULL; rt = rt->next) {
1080     if (rt->raynum) {
1081     FD_SET(rt->pd.r, &readset);
1082     ++nr;
1083     }
1084     FD_SET(rt->pd.r, &errset);
1085     if (rt->pd.r >= n)
1086     n = rt->pd.r + 1;
1087     }
1088     if (!nr) /* no rays pending */
1089     break;
1090     if (nr > 1) { /* call select for multiple proc's */
1091     errno = 0;
1092     if (select(n, &readset, NULL, &errset, NULL) < 0)
1093     error(SYSTEM, "select call error in wait_rproc()");
1094     } else
1095     FD_ZERO(&errset);
1096     nr = 0;
1097     for (rt = &rt0; rt != NULL; rt = rt->next) {
1098     if (!FD_ISSET(rt->pd.r, &readset) &&
1099     !FD_ISSET(rt->pd.r, &errset))
1100     continue;
1101     if (rt->buf == NULL) {
1102     rt->bsiz = treebufsiz;
1103     rt->buf = (char *)malloc(treebufsiz);
1104 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
1105 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
1106     rt->bsiz = treebufsiz;
1107     else
1108 greg 1.28 treebufsiz = rt->bsiz += BUFSIZ;
1109 greg 1.1 rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1110     }
1111     if (rt->buf == NULL)
1112     error(SYSTEM, "out of memory in wait_rproc");
1113 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1114     if (nr <= 0)
1115 greg 1.1 error(USER, "rtrace process died");
1116 greg 1.2 rt->nbr += nr; /* advance & check */
1117     if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
1118     "~\t~\t", 4)) {
1119     rt->nbr -= 4; /* elide terminator */
1120 greg 1.3 queue_raytree(rt);
1121 greg 1.1 rtfree = rt; /* ready for next ray */
1122     }
1123     }
1124     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
1125     return rtfree;
1126     }
1127    
1128     /* return next available rtrace process */
1129     struct rtproc *
1130     get_rproc(void)
1131     {
1132     struct rtproc *rtp;
1133     /* check for idle rtrace */
1134     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
1135     if (!rtp->raynum)
1136     return rtp;
1137     return wait_rproc(); /* need to wait for one */
1138     }
1139    
1140     /* trace ray contributions (main loop) */
1141     void
1142 greg 1.5 trace_contribs(FILE *fin)
1143 greg 1.1 {
1144 greg 1.49 static int ignore_warning_given = 0;
1145 greg 1.1 char inpbuf[128];
1146     int iblen;
1147     struct rtproc *rtp;
1148     /* loop over input */
1149 greg 1.36 while ((iblen = getinp(inpbuf, fin)) >= 0) {
1150 greg 1.49 if (!iblen && accumulate != 1) {
1151     if (!ignore_warning_given++)
1152     error(WARNING,
1153     "dummy ray(s) ignored during accumulation\n");
1154     continue;
1155     }
1156 greg 1.53 if (!iblen || /* need flush/reset? */
1157 greg 1.36 queue_length() > 10*nrtprocs() ||
1158     lastray+1 < lastray) {
1159 greg 1.1 while (wait_rproc() != NULL)
1160 greg 1.3 process_queue();
1161 greg 1.34 if (lastray+1 < lastray)
1162     lastdone = lastray = 0;
1163 greg 1.1 }
1164     rtp = get_rproc(); /* get avail. rtrace process */
1165 greg 1.36 rtp->raynum = ++lastray; /* assign ray */
1166     if (iblen) { /* trace ray if valid */
1167     writebuf(rtp->pd.w, inpbuf, iblen);
1168     } else { /* else bypass dummy ray */
1169 greg 1.53 queue_raytree(rtp); /* queue empty ray/record */
1170     if ((yres <= 0) | (xres <= 0))
1171     waitflush = 1; /* flush right after */
1172 greg 1.36 }
1173 greg 1.38 process_queue(); /* catch up with results */
1174 greg 1.14 if (raysleft && !--raysleft)
1175 greg 1.38 break; /* preemptive EOI */
1176 greg 1.1 }
1177     while (wait_rproc() != NULL) /* process outstanding rays */
1178 greg 1.3 process_queue();
1179 greg 1.49 if (accumulate <= 0)
1180     done_contrib(0); /* output tallies */
1181     else if (account < accumulate) {
1182     error(WARNING, "partial accumulation in final record");
1183     done_contrib(accumulate - account);
1184     }
1185 greg 1.14 if (raysleft)
1186 greg 1.2 error(USER, "unexpected EOF on input");
1187 greg 1.14 lu_done(&ofiletab); /* close output files */
1188     }
1189    
1190 greg 1.46 /* get ray contribution from previous file */
1191     static int
1192     get_contrib(DCOLOR cnt, FILE *finp)
1193     {
1194     COLOR fv;
1195     COLR cv;
1196    
1197     switch (outfmt) {
1198     case 'a':
1199     return(fscanf(finp,"%lf %lf %lf",&cnt[0],&cnt[1],&cnt[2]) == 3);
1200     case 'f':
1201     if (fread(fv, sizeof(fv[0]), 3, finp) != 3)
1202     return(0);
1203     copycolor(cnt, fv);
1204     return(1);
1205     case 'd':
1206     return(fread(cnt, sizeof(cnt[0]), 3, finp) == 3);
1207     case 'c':
1208     if (fread(cv, sizeof(cv), 1, finp) != 1)
1209     return(0);
1210     colr_color(fv, cv);
1211     copycolor(cnt, fv);
1212     return(1);
1213     default:
1214     error(INTERNAL, "botched output format");
1215     }
1216     return(0); /* pro forma return */
1217     }
1218    
1219     /* close output file opened for input */
1220 greg 1.14 static int
1221 greg 1.46 myclose(const LUENT *e, void *p)
1222 greg 1.14 {
1223 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
1224    
1225 greg 1.46 if (sop->ofp == NULL)
1226 greg 1.50 return(0);
1227 greg 1.46 fclose(sop->ofp);
1228     sop->ofp = NULL;
1229 greg 1.50 return(0);
1230 greg 1.14 }
1231    
1232 greg 1.45 /* load previously accumulated values */
1233     void
1234     reload_output(void)
1235     {
1236     int i, j;
1237     MODCONT *mp;
1238     int ofl;
1239     char oname[1024];
1240     char *fmode = "rb";
1241     char *outvfmt;
1242     LUENT *ment, *oent;
1243 greg 1.46 int xr, yr;
1244 greg 1.45 STREAMOUT sout;
1245 greg 1.46 DCOLOR rgbv;
1246 greg 1.45
1247     switch (outfmt) {
1248     case 'a':
1249     outvfmt = "ascii";
1250     fmode = "r";
1251     break;
1252     case 'f':
1253     outvfmt = "float";
1254     break;
1255     case 'd':
1256     outvfmt = "double";
1257     break;
1258     case 'c':
1259     outvfmt = COLRFMT;
1260     break;
1261     default:
1262     error(INTERNAL, "botched output format");
1263     return;
1264     }
1265 greg 1.46 /* reload modifier values */
1266 greg 1.45 for (i = 0; i < nmods; i++) {
1267     ment = lu_find(&modconttab,modname[i]);
1268     mp = (MODCONT *)ment->data;
1269     if (mp->outspec == NULL)
1270     error(USER, "cannot reload from stdout");
1271     if (mp->outspec[0] == '!')
1272     error(USER, "cannot reload from command");
1273 greg 1.46 for (j = 0; ; j++) { /* load each modifier bin */
1274 greg 1.45 ofl = ofname(oname, mp->outspec, mp->modname, j);
1275     if (ofl < 0)
1276     error(USER, "bad output file specification");
1277     oent = lu_find(&ofiletab, oname);
1278     if (oent->data != NULL) {
1279     sout = *(STREAMOUT *)oent->data;
1280     } else {
1281     sout.reclen = 0;
1282 greg 1.46 sout.outpipe = 0;
1283     sout.xr = xres; sout.yr = yres;
1284 greg 1.45 sout.ofp = NULL;
1285     }
1286 greg 1.46 if (sout.ofp == NULL) { /* open output as input */
1287     sout.ofp = fopen(oname, fmode);
1288     if (sout.ofp == NULL) {
1289     if (j)
1290     break; /* assume end of modifier */
1291     sprintf(errmsg, "missing reload file '%s'",
1292     oname);
1293     error(WARNING, errmsg);
1294     break;
1295     }
1296     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1297     sprintf(errmsg, "format mismatch for '%s'",
1298     oname);
1299     error(USER, errmsg);
1300     }
1301     if ((sout.xr > 0) & (sout.yr > 0) &&
1302     (!fscnresolu(&xr, &yr, sout.ofp) ||
1303 greg 1.47 (xr != sout.xr) |
1304     (yr != sout.yr))) {
1305 greg 1.46 sprintf(errmsg, "resolution mismatch for '%s'",
1306     oname);
1307     error(USER, errmsg);
1308     }
1309 greg 1.45 }
1310 greg 1.46 /* read in RGB value */
1311     if (!get_contrib(rgbv, sout.ofp)) {
1312 greg 1.48 if (!j) {
1313     fclose(sout.ofp);
1314 greg 1.46 break; /* ignore empty file */
1315 greg 1.48 }
1316 greg 1.47 if (j < mp->nbins) {
1317 greg 1.46 sprintf(errmsg, "missing data in '%s'",
1318     oname);
1319     error(USER, errmsg);
1320     }
1321     break;
1322     }
1323     if (j >= mp->nbins) /* grow modifier size */
1324     ment->data = (char *)(mp = growmodifier(mp, j+1));
1325     copycolor(mp->cbin[j], rgbv);
1326 greg 1.48 if (oent->key == NULL) /* new file entry */
1327     oent->key = strcpy((char *)
1328     malloc(strlen(oname)+1), oname);
1329     if (oent->data == NULL)
1330     oent->data = (char *)malloc(sizeof(STREAMOUT));
1331     *(STREAMOUT *)oent->data = sout;
1332 greg 1.45 }
1333     }
1334 greg 1.46 lu_doall(&ofiletab, myclose, NULL); /* close all files */
1335     }
1336    
1337     /* seek on the given output file */
1338     static int
1339     myseeko(const LUENT *e, void *p)
1340     {
1341     STREAMOUT *sop = (STREAMOUT *)e->data;
1342     off_t nbytes = *(off_t *)p;
1343    
1344     if (sop->reclen > 1)
1345     nbytes = nbytes * sop->reclen;
1346     if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1347     sprintf(errmsg, "seek error on file '%s'", e->key);
1348     error(SYSTEM, errmsg);
1349     }
1350     return 0;
1351 greg 1.45 }
1352    
1353 greg 1.14 /* recover output if possible */
1354     void
1355     recover_output(FILE *fin)
1356     {
1357 greg 1.31 off_t lastout = -1;
1358     int outvsiz, recsiz;
1359     char *outvfmt;
1360     int i, j;
1361     MODCONT *mp;
1362     int ofl;
1363     char oname[1024];
1364     LUENT *ment, *oent;
1365     STREAMOUT sout;
1366     off_t nvals;
1367     int xr, yr;
1368 greg 1.14
1369     switch (outfmt) {
1370     case 'a':
1371     error(USER, "cannot recover ASCII output");
1372     return;
1373     case 'f':
1374     outvsiz = sizeof(float)*3;
1375     outvfmt = "float";
1376     break;
1377     case 'd':
1378     outvsiz = sizeof(double)*3;
1379     outvfmt = "double";
1380     break;
1381     case 'c':
1382     outvsiz = sizeof(COLR);
1383     outvfmt = COLRFMT;
1384     break;
1385     default:
1386     error(INTERNAL, "botched output format");
1387     return;
1388     }
1389     /* check modifier outputs */
1390     for (i = 0; i < nmods; i++) {
1391     ment = lu_find(&modconttab,modname[i]);
1392     mp = (MODCONT *)ment->data;
1393     if (mp->outspec == NULL)
1394     error(USER, "cannot recover from stdout");
1395 greg 1.31 if (mp->outspec[0] == '!')
1396     error(USER, "cannot recover from command");
1397 greg 1.14 for (j = 0; ; j++) { /* check each bin's file */
1398     ofl = ofname(oname, mp->outspec, mp->modname, j);
1399     if (ofl < 0)
1400     error(USER, "bad output file specification");
1401     oent = lu_find(&ofiletab, oname);
1402 greg 1.31 if (oent->data != NULL) {
1403     sout = *(STREAMOUT *)oent->data;
1404     } else {
1405 greg 1.45 sout.reclen = 0;
1406 greg 1.46 sout.outpipe = 0;
1407 greg 1.31 sout.ofp = NULL;
1408     }
1409     if (sout.ofp != NULL) { /* already open? */
1410 greg 1.14 if (ofl & OF_BIN)
1411     continue;
1412     break;
1413     }
1414     /* open output */
1415 greg 1.31 sout.ofp = fopen(oname, "rb+");
1416     if (sout.ofp == NULL) {
1417 greg 1.23 if (j)
1418     break; /* assume end of modifier */
1419     sprintf(errmsg, "missing recover file '%s'",
1420     oname);
1421 greg 1.45 error(WARNING, errmsg);
1422     break;
1423 greg 1.23 }
1424 greg 1.31 nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1425 greg 1.14 if (nvals <= 0) {
1426     lastout = 0; /* empty output, quit here */
1427 greg 1.31 fclose(sout.ofp);
1428 greg 1.14 break;
1429     }
1430 greg 1.45 if (!sout.reclen) {
1431 greg 1.31 if (!(ofl & OF_BIN)) {
1432 greg 1.14 sprintf(errmsg,
1433 greg 1.32 "need -bn to recover file '%s'",
1434 greg 1.14 oname);
1435 greg 1.32 error(USER, errmsg);
1436 greg 1.14 }
1437 greg 1.31 recsiz = outvsiz;
1438     } else
1439     recsiz = outvsiz * sout.reclen;
1440    
1441     lseek(fileno(sout.ofp), 0, SEEK_SET);
1442     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1443     sprintf(errmsg, "format mismatch for '%s'",
1444     oname);
1445     error(USER, errmsg);
1446     }
1447 greg 1.48 sout.xr = xres; sout.yr = yres;
1448     if ((sout.xr > 0) & (sout.yr > 0) &&
1449 greg 1.31 (!fscnresolu(&xr, &yr, sout.ofp) ||
1450 greg 1.48 (xr != sout.xr) |
1451     (yr != sout.yr))) {
1452 greg 1.31 sprintf(errmsg, "resolution mismatch for '%s'",
1453     oname);
1454     error(USER, errmsg);
1455 greg 1.14 }
1456 greg 1.31 nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1457     if ((lastout < 0) | (nvals < lastout))
1458 greg 1.14 lastout = nvals;
1459 greg 1.31 if (oent->key == NULL) /* new entry */
1460 greg 1.14 oent->key = strcpy((char *)
1461     malloc(strlen(oname)+1), oname);
1462 greg 1.31 if (oent->data == NULL)
1463     oent->data = (char *)malloc(sizeof(STREAMOUT));
1464     *(STREAMOUT *)oent->data = sout;
1465 greg 1.14 if (!(ofl & OF_BIN))
1466     break; /* no bin separation */
1467     }
1468     if (!lastout) { /* empty output */
1469 greg 1.16 error(WARNING, "no previous data to recover");
1470 greg 1.14 lu_done(&ofiletab); /* reclose all outputs */
1471     return;
1472     }
1473 greg 1.31 if (j > mp->nbins) /* reallocate modifier bins */
1474     ment->data = (char *)(mp = growmodifier(mp, j));
1475 greg 1.14 }
1476 greg 1.15 if (lastout < 0) {
1477 greg 1.16 error(WARNING, "no output files to recover");
1478 greg 1.15 return;
1479     }
1480 greg 1.49 if (raysleft && lastout >= raysleft/accumulate) {
1481 greg 1.24 error(WARNING, "output appears to be complete");
1482     /* XXX should read & discard input? */
1483     quit(0);
1484     }
1485 greg 1.14 /* seek on all files */
1486     nvals = lastout * outvsiz;
1487     lu_doall(&ofiletab, myseeko, &nvals);
1488 greg 1.28 /* skip repeated input */
1489 greg 1.14 for (nvals = 0; nvals < lastout; nvals++)
1490 greg 1.36 if (getinp(oname, fin) < 0)
1491 greg 1.14 error(USER, "unexpected EOF on input");
1492 greg 1.49 lastray = lastdone = (unsigned long)lastout * accumulate;
1493 greg 1.14 if (raysleft)
1494     raysleft -= lastray;
1495 greg 1.1 }