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root/radiance/ray/src/util/rtcontrib.c
Revision: 1.45
Committed: Sat Nov 17 01:13:51 2007 UTC (16 years, 5 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.44: +164 -46 lines
Log Message: 
Added -c option to rtcontrib (barely tested, and -r does not work)

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.45 static const char RCSid[] = "$Id: rtcontrib.c,v 1.44 2007/11/15 18:32:34 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     "-dj", ".5", "-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 1.45 int accumulate = 0; /* accumulate ray values? */
135 greg 1.35 int force_open = 0; /* truncate existing output? */
136 greg 1.1 int xres = 0; /* horiz. output resolution */
137     int yres = 0; /* vert. output resolution */
138    
139 greg 1.14 unsigned long raysleft; /* number of rays left to trace */
140 greg 1.1 long waitflush; /* how long until next flush */
141    
142     unsigned long lastray = 0; /* last ray number sent */
143     unsigned long lastdone = 0; /* last ray processed */
144    
145 greg 1.2 int using_stdout = 0; /* are we using stdout? */
146    
147 greg 1.1 const char *modname[MAXMODLIST]; /* ordered modifier name list */
148     int nmods = 0; /* number of modifiers */
149    
150 greg 1.29 #define queue_length() (lastray - lastdone)
151    
152 greg 1.31 MODCONT *growmodifier(MODCONT *mp, int nb);
153     MODCONT *addmodifier(char *modn, char *outf, char *binv, int bincnt);
154     void addmodfile(char *fname, char *outf, char *binv, int bincnt);
155 greg 1.1
156 greg 1.5 void init(int np);
157 greg 1.1 int done_rprocs(struct rtproc *rtp);
158 greg 1.45 void reload_output(void);
159 greg 1.14 void recover_output(FILE *fin);
160     void trace_contribs(FILE *fin);
161 greg 1.1 struct rtproc *wait_rproc(void);
162     struct rtproc *get_rproc(void);
163 greg 1.3 void queue_raytree(struct rtproc *rtp);
164     void process_queue(void);
165 greg 1.1
166 greg 1.14 void put_contrib(const DCOLOR cnt, FILE *fout);
167 greg 1.2 void add_contrib(const char *modn);
168 greg 1.1 void done_contrib(void);
169    
170 greg 1.29 /* return number of open rtrace processes */
171     static int
172     nrtprocs(void)
173     {
174     int nrtp = 0;
175     struct rtproc *rtp;
176    
177     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
178     nrtp += rtp->pd.running;
179     return(nrtp);
180     }
181    
182 greg 1.1 /* set input/output format */
183     static void
184     setformat(const char *fmt)
185     {
186     switch (fmt[0]) {
187     case 'f':
188     case 'd':
189 greg 1.10 SET_FILE_BINARY(stdin);
190     /* fall through */
191     case 'a':
192 greg 1.1 inpfmt = fmt[0];
193     break;
194     default:
195     goto fmterr;
196     }
197     switch (fmt[1]) {
198     case '\0':
199     outfmt = inpfmt;
200     return;
201     case 'a':
202     case 'f':
203     case 'd':
204     case 'c':
205     outfmt = fmt[1];
206     break;
207     default:
208     goto fmterr;
209     }
210     if (!fmt[2])
211     return;
212     fmterr:
213     sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
214     error(USER, errmsg);
215     }
216    
217     /* gather rays from rtrace and output contributions */
218     int
219     main(int argc, char *argv[])
220     {
221 greg 1.40 int contrib = 0;
222 greg 1.1 int nprocs = 1;
223 greg 1.14 int recover = 0;
224 greg 1.1 char *curout = NULL;
225     char *binval = NULL;
226 greg 1.31 int bincnt = 0;
227 greg 1.5 char fmt[8];
228 greg 1.2 int i, j;
229 greg 1.25 /* need at least one argument */
230     if (argc < 2) {
231     fprintf(stderr,
232 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",
233 greg 1.25 argv[0]);
234     exit(1);
235     }
236 greg 1.2 /* global program name */
237 greg 1.1 gargv = argv;
238 greg 1.11 /* initialize calcomp routines */
239 greg 1.1 esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
240     esupport &= ~(E_OUTCHAN);
241 greg 1.11 varset("PI", ':', PI);
242 greg 1.1 /* get our options */
243 greg 1.2 for (i = 1; i < argc-1; i++) {
244     /* expand arguments */
245     while ((j = expandarg(&argc, &argv, i)) > 0)
246     ;
247     if (j < 0) {
248     fprintf(stderr, "%s: cannot expand '%s'",
249     argv[0], argv[i]);
250     exit(1);
251     }
252     if (argv[i][0] == '-')
253     switch (argv[i][1]) {
254     case 'n': /* number of processes */
255 greg 1.21 if (argv[i][2] || i >= argc-2) break;
256 greg 1.2 nprocs = atoi(argv[++i]);
257     if (nprocs <= 0)
258     error(USER, "illegal number of processes");
259     continue;
260 greg 1.40 case 'V': /* output contributions */
261     switch (argv[i][2]) {
262     case '\0':
263     contrib = !contrib;
264     continue;
265     case '+': case '1':
266     case 'T': case 't':
267     case 'Y': case 'y':
268     contrib = 1;
269     continue;
270     case '-': case '0':
271     case 'F': case 'f':
272     case 'N': case 'n':
273     contrib = 0;
274     continue;
275     }
276     break;
277 greg 1.45 case 'c': /* accumulate ray values */
278     switch (argv[i][2]) {
279     case '\0':
280     accumulate = !accumulate;
281     continue;
282     case '+': case '1':
283     case 'T': case 't':
284     case 'Y': case 'y':
285     accumulate = 1;
286     continue;
287     case '-': case '0':
288     case 'F': case 'f':
289     case 'N': case 'n':
290     accumulate = 0;
291     continue;
292     }
293     break;
294 greg 1.40 case 'r': /* recover output */
295     if (argv[i][2]) break;
296     recover++;
297     continue;
298 greg 1.2 case 'h': /* output header? */
299     switch (argv[i][2]) {
300     case '\0':
301     header = !header;
302     continue;
303 greg 1.3 case '+': case '1':
304     case 'T': case 't':
305     case 'Y': case 'y':
306 greg 1.2 header = 1;
307     continue;
308 greg 1.3 case '-': case '0':
309     case 'F': case 'f':
310     case 'N': case 'n':
311 greg 1.2 header = 0;
312     continue;
313     }
314     break;
315 greg 1.35 case 'f': /* file or force or format */
316 greg 1.2 if (!argv[i][2]) {
317 greg 1.9 char *fpath;
318 greg 1.21 if (i >= argc-2) break;
319 greg 1.9 fpath = getpath(argv[++i],
320     getrlibpath(), R_OK);
321     if (fpath == NULL) {
322     sprintf(errmsg,
323     "cannot find file '%s'",
324     argv[i]);
325     error(USER, errmsg);
326     }
327     fcompile(fpath);
328 greg 1.2 continue;
329     }
330 greg 1.35 if (argv[i][2] == 'o') {
331     force_open++;
332     continue;
333     }
334 greg 1.2 setformat(argv[i]+2);
335     continue;
336     case 'e': /* expression */
337 greg 1.21 if (argv[i][2] || i >= argc-2) break;
338 greg 1.2 scompile(argv[++i], NULL, 0);
339 greg 1.1 continue;
340 greg 1.2 case 'o': /* output file spec. */
341 greg 1.21 if (argv[i][2] || i >= argc-2) break;
342 greg 1.2 curout = argv[++i];
343 greg 1.1 continue;
344 greg 1.2 case 'x': /* horiz. output resolution */
345 greg 1.21 if (argv[i][2] || i >= argc-2) break;
346 greg 1.2 xres = atoi(argv[++i]);
347 greg 1.1 continue;
348 greg 1.2 case 'y': /* vert. output resolution */
349 greg 1.21 if (argv[i][2] || i >= argc-2) break;
350 greg 1.2 yres = atoi(argv[++i]);
351     continue;
352 greg 1.31 case 'b': /* bin expression/count */
353     if (i >= argc-2) break;
354     if (argv[i][2] == 'n') {
355     bincnt = atoi(argv[++i]);
356     continue;
357     }
358     if (argv[i][2]) break;
359 greg 1.2 binval = argv[++i];
360     continue;
361     case 'm': /* modifier name */
362 greg 1.21 if (argv[i][2] || i >= argc-2) break;
363 greg 1.2 rtargv[rtargc++] = "-ti";
364     rtargv[rtargc++] = argv[++i];
365 greg 1.31 addmodifier(argv[i], curout, binval, bincnt);
366 greg 1.1 continue;
367 greg 1.17 case 'M': /* modifier file */
368 greg 1.21 if (argv[i][2] || i >= argc-2) break;
369 greg 1.19 rtargv[rtargc++] = "-tI";
370     rtargv[rtargc++] = argv[++i];
371 greg 1.31 addmodfile(argv[i], curout, binval, bincnt);
372 greg 1.17 continue;
373 greg 1.39 case 'P': /* persist file */
374 greg 1.44 if (i >= argc-2) break;
375     persist_state = (argv[i][2] == 'P') ?
376     PERSIST_PARALL : PERSIST_SINGLE;
377     rtargv[rtargc++] = argv[i];
378     rtargv[rtargc++] = argv[++i];
379     continue;
380 greg 1.1 }
381 greg 1.2 rtargv[rtargc++] = argv[i]; /* assume rtrace option */
382 greg 1.1 }
383 greg 1.45 if (accumulate) /* no output flushing for single record */
384     xres = yres = 0;
385 greg 1.2 /* set global argument list */
386     gargc = argc; gargv = argv;
387 greg 1.1 /* add "mandatory" rtrace settings */
388 greg 1.2 for (j = 0; myrtopts[j] != NULL; j++)
389     rtargv[rtargc++] = myrtopts[j];
390 greg 1.40 rtargv[rtargc++] = contrib ? RTCONTRIB : RTCOEFF;
391 greg 1.2 /* just asking for defaults? */
392     if (!strcmp(argv[i], "-defaults")) {
393 greg 1.1 char sxres[16], syres[16];
394     char *rtpath;
395 greg 1.2 printf("-n %-2d\t\t\t\t# number of processes\n", nprocs);
396 greg 1.40 printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
397     contrib ? "contributions" : "coefficients");
398 greg 1.45 printf("-c%c\t\t\t\t# %s\n", accumulate ? '+' : '-',
399     accumulate ? "accumulate ray values" :
400     "one output record per ray");
401 greg 1.1 fflush(stdout); /* report OUR options */
402     rtargv[rtargc++] = header ? "-h+" : "-h-";
403     sprintf(fmt, "-f%c%c", inpfmt, outfmt);
404     rtargv[rtargc++] = fmt;
405     rtargv[rtargc++] = "-x";
406     sprintf(sxres, "%d", xres);
407     rtargv[rtargc++] = sxres;
408     rtargv[rtargc++] = "-y";
409     sprintf(syres, "%d", yres);
410     rtargv[rtargc++] = syres;
411     rtargv[rtargc++] = "-defaults";
412     rtargv[rtargc] = NULL;
413     rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
414     if (rtpath == NULL) {
415     eputs(rtargv[0]);
416     eputs(": command not found\n");
417     exit(1);
418     }
419     execv(rtpath, rtargv);
420     perror(rtpath); /* execv() should not return */
421     exit(1);
422 greg 1.5 }
423     if (nprocs > 1) { /* add persist file if parallel */
424 greg 1.44 if (persist_state == PERSIST_SINGLE)
425     error(USER, "use -PP option for multiple processes");
426     if (persist_state == PERSIST_NONE) {
427     rtargv[rtargc++] = "-PP";
428     rtargv[rtargc++] = mktemp(persistfn);
429     persist_state = PERSIST_OURS;
430     }
431 greg 1.2 }
432 greg 1.1 /* add format string */
433     sprintf(fmt, "-f%cf", inpfmt);
434     rtargv[rtargc++] = fmt;
435     /* octree argument is last */
436 greg 1.2 if (i <= 0 || i != argc-1 || argv[i][0] == '-')
437     error(USER, "missing octree argument");
438     rtargv[rtargc++] = octree = argv[i];
439 greg 1.1 rtargv[rtargc] = NULL;
440 greg 1.24 /* start rtrace */
441 greg 1.1 init(nprocs);
442 greg 1.14 if (recover) /* perform recovery if requested */
443 greg 1.45 if ((force_open = accumulate))
444     reload_output();
445     else
446     recover_output(stdin);
447 greg 1.24 trace_contribs(stdin); /* compute contributions */
448 greg 1.1 quit(0);
449     }
450    
451 schorsch 1.26 #ifndef SIGALRM
452     #define SIGALRM SIGTERM
453     #endif
454 greg 1.1 /* kill persistent rtrace process */
455     static void
456     killpersist(void)
457     {
458     FILE *fp = fopen(persistfn, "r");
459 schorsch 1.26 RT_PID pid;
460 greg 1.1
461     if (fp == NULL)
462     return;
463     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
464     unlink(persistfn);
465     fclose(fp);
466     }
467    
468     /* close rtrace processes and clean up */
469     int
470     done_rprocs(struct rtproc *rtp)
471     {
472     int st0, st1 = 0;
473    
474     if (rtp->next != NULL) { /* close last opened first! */
475     st1 = done_rprocs(rtp->next);
476     free((void *)rtp->next);
477     rtp->next = NULL;
478     }
479     st0 = close_process(&rtp->pd);
480     if (st0 < 0)
481     error(WARNING, "unknown return status from rtrace process");
482     else if (st0 > 0)
483     return(st0);
484     return(st1);
485     }
486    
487     /* exit with status */
488     void
489     quit(int status)
490     {
491     int rtstat;
492    
493 greg 1.45 if (persist_state == PERSIST_OURS) /* terminate waiting rtrace */
494 greg 1.1 killpersist();
495     /* clean up rtrace process(es) */
496     rtstat = done_rprocs(&rt0);
497     if (status == 0)
498     status = rtstat;
499     exit(status); /* flushes all output streams */
500     }
501    
502 greg 1.5 /* start rtrace processes and initialize */
503 greg 1.1 void
504     init(int np)
505     {
506     struct rtproc *rtp;
507     int i;
508     int maxbytes;
509 greg 1.2 /* make sure we have something to do */
510     if (!nmods)
511     error(USER, "No modifiers specified");
512 greg 1.1 /* assign ray variables */
513     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
514     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
515     /* set up signal handling */
516 greg 1.3 signal(SIGINT, quit);
517     #ifdef SIGHUP
518     signal(SIGHUP, quit);
519     #endif
520     #ifdef SIGTERM
521     signal(SIGTERM, quit);
522     #endif
523     #ifdef SIGPIPE
524 greg 1.1 signal(SIGPIPE, quit);
525     #endif
526     rtp = &rt0; /* start rtrace process(es) */
527     for (i = 0; i++ < np; ) {
528     errno = 0;
529     maxbytes = open_process(&rtp->pd, rtargv);
530     if (maxbytes == 0) {
531     eputs(rtargv[0]);
532     eputs(": command not found\n");
533     exit(1);
534     }
535     if (maxbytes < 0)
536     error(SYSTEM, "cannot start rtrace process");
537     if (maxbytes > treebufsiz)
538     treebufsiz = maxbytes;
539 greg 1.2 rtp->raynum = 0;
540 greg 1.1 rtp->bsiz = 0;
541     rtp->buf = NULL;
542 greg 1.2 rtp->nbr = 0;
543 greg 1.1 if (i == np) /* last process? */
544     break;
545     if (i == 1)
546     sleep(2); /* wait for persist file */
547     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
548     if (rtp->next == NULL)
549     error(SYSTEM, "out of memory in init");
550     rtp = rtp->next;
551     }
552     rtp->next = NULL; /* terminate list */
553     if (yres > 0) {
554     if (xres > 0)
555 greg 1.14 raysleft = (unsigned long)xres*yres;
556 greg 1.1 else
557     raysleft = yres;
558     } else
559     raysleft = 0;
560     waitflush = xres;
561     }
562    
563 greg 1.31 /* grow modifier to accommodate more bins */
564     MODCONT *
565     growmodifier(MODCONT *mp, int nb)
566     {
567     if (nb <= mp->nbins)
568     return mp;
569     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
570     if (mp == NULL)
571     error(SYSTEM, "out of memory in growmodifier");
572     memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
573     mp->nbins = nb;
574     return mp;
575     }
576    
577 greg 1.1 /* add modifier to our list to track */
578     MODCONT *
579 greg 1.31 addmodifier(char *modn, char *outf, char *binv, int bincnt)
580 greg 1.1 {
581     LUENT *lep = lu_find(&modconttab, modn);
582     MODCONT *mp;
583 greg 1.32 int i;
584 greg 1.1
585     if (lep->data != NULL) {
586     sprintf(errmsg, "duplicate modifier '%s'", modn);
587     error(USER, errmsg);
588     }
589     if (nmods >= MAXMODLIST)
590     error(USER, "too many modifiers");
591     modname[nmods++] = modn; /* XXX assumes static string */
592     lep->key = modn; /* XXX assumes static string */
593     mp = (MODCONT *)malloc(sizeof(MODCONT));
594     if (mp == NULL)
595     error(SYSTEM, "out of memory in addmodifier");
596     mp->outspec = outf; /* XXX assumes static string */
597     mp->modname = modn; /* XXX assumes static string */
598     if (binv != NULL)
599     mp->binv = eparse(binv);
600     else
601     mp->binv = eparse("0");
602     mp->nbins = 1;
603     setcolor(mp->cbin[0], 0., 0., 0.);
604 greg 1.31 if (mp->binv->type == NUM) /* assume one bin if constant */
605     bincnt = 1;
606     else if (bincnt > 1)
607     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     if (bnp != NULL)
670     return -1;
671     bnp = cp;
672     break;
673     default:
674     return -1;
675     }
676     }
677     if (mnp != NULL) { /* create file name */
678     if (bnp != NULL) {
679     if (bnp > mnp)
680     sprintf(oname, ospec, mname, bn);
681     else
682     sprintf(oname, ospec, bn, mname);
683     return OF_MODIFIER|OF_BIN;
684     }
685     sprintf(oname, ospec, mname);
686     return OF_MODIFIER;
687     }
688     if (bnp != NULL) {
689     sprintf(oname, ospec, bn);
690     return OF_BIN;
691     }
692     strcpy(oname, ospec);
693     return 0;
694     }
695    
696 greg 1.1 /* write header to the given output stream */
697     void
698 greg 1.14 printheader(FILE *fout, const char *info)
699 greg 1.1 {
700     extern char VersionID[];
701     FILE *fin = fopen(octree, "r");
702    
703     if (fin == NULL)
704     quit(1);
705 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
706 greg 1.1 fclose(fin);
707     printargs(gargc-1, gargv, fout); /* add our command */
708     fprintf(fout, "SOFTWARE= %s\n", VersionID);
709     fputnow(fout);
710 greg 1.14 if (info != NULL) /* add extra info if given */
711     fputs(info, fout);
712 greg 1.1 switch (outfmt) { /* add output format */
713     case 'a':
714     fputformat("ascii", fout);
715     break;
716     case 'f':
717     fputformat("float", fout);
718     break;
719     case 'd':
720     fputformat("double", fout);
721     break;
722     case 'c':
723     fputformat(COLRFMT, fout);
724     break;
725     }
726     fputc('\n', fout);
727 greg 1.30 }
728    
729     /* write resolution string to given output stream */
730     void
731 greg 1.45 printresolu(FILE *fout, int xr, int yr)
732 greg 1.30 {
733 greg 1.45 if ((xr > 0) & (yr > 0)) /* resolution string */
734     fprtresolu(xr, yr, fout);
735     if (xres > 0) /* global flush flag */
736 greg 1.1 fflush(fout);
737     }
738    
739 greg 1.32 /* Get output stream pointer (open and write header if new and noopen==0) */
740 greg 1.31 STREAMOUT *
741 greg 1.32 getostream(const char *ospec, const char *mname, int bn, int noopen)
742 greg 1.31 {
743 greg 1.45 static const DCOLOR nocontrib = BLKCOLOR;
744 greg 1.31 static STREAMOUT stdos;
745     int ofl;
746     char oname[1024];
747     LUENT *lep;
748     STREAMOUT *sop;
749 greg 1.1
750     if (ospec == NULL) { /* use stdout? */
751 greg 1.32 if (!noopen && !using_stdout) {
752 greg 1.10 if (outfmt != 'a')
753     SET_FILE_BINARY(stdout);
754     if (header)
755 greg 1.14 printheader(stdout, NULL);
756 greg 1.45 printresolu(stdout, xres, yres);
757     stdos.xr = xres; stdos.yr = yres;
758 greg 1.31 using_stdout = 1;
759 greg 1.10 }
760 greg 1.31 stdos.ofp = stdout;
761 greg 1.32 stdos.reclen += noopen;
762 greg 1.31 return &stdos;
763 greg 1.1 }
764 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
765     if (ofl < 0) {
766     sprintf(errmsg, "bad output format '%s'", ospec);
767     error(USER, errmsg);
768     }
769     lep = lu_find(&ofiletab, oname); /* look it up */
770 greg 1.1 if (lep->key == NULL) /* new entry */
771 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
772 greg 1.31 sop = (STREAMOUT *)lep->data;
773     if (sop == NULL) { /* allocate stream */
774     sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
775     if (sop == NULL)
776     error(SYSTEM, "out of memory in getostream");
777 greg 1.45 sop->outpipe = oname[0] == '!';
778     sop->reclen = 0;
779 greg 1.32 sop->ofp = NULL; /* open iff noopen==0 */
780 greg 1.45 sop->xr = xres; sop->yr = yres;
781 greg 1.31 lep->data = (char *)sop;
782 greg 1.45 if (!force_open && access(oname, F_OK) == 0) {
783     errno = EEXIST; /* file exists */
784     goto openerr;
785     }
786 greg 1.31 }
787 greg 1.32 if (!noopen && sop->ofp == NULL) { /* open output stream */
788 greg 1.34 long i;
789 greg 1.14 if (oname[0] == '!') /* output to command */
790 greg 1.31 sop->ofp = popen(oname+1, "w");
791 greg 1.45 else /* else open file */
792 greg 1.31 sop->ofp = fopen(oname, "w");
793 greg 1.45 if (sop->ofp == NULL)
794     goto openerr;
795 greg 1.10 if (outfmt != 'a')
796 greg 1.31 SET_FILE_BINARY(sop->ofp);
797 greg 1.14 if (header) {
798     char info[512];
799     char *cp = info;
800 greg 1.32 if (ofl & OF_MODIFIER || sop->reclen == 1) {
801 greg 1.30 sprintf(cp, "MODIFIER=%s\n", mname);
802     while (*cp) ++cp;
803     }
804 greg 1.14 if (ofl & OF_BIN) {
805     sprintf(cp, "BIN=%d\n", bn);
806     while (*cp) ++cp;
807     }
808     *cp = '\0';
809 greg 1.31 printheader(sop->ofp, info);
810 greg 1.14 }
811 greg 1.45 printresolu(sop->ofp, sop->xr, sop->yr);
812 greg 1.2 /* play catch-up */
813 greg 1.45 for (i = accumulate ? 0 : lastdone; i--; ) {
814     int j = sop->reclen;
815     if (j <= 0) j = 1;
816     while (j--)
817     put_contrib(nocontrib, sop->ofp);
818 greg 1.2 if (outfmt == 'a')
819 greg 1.31 putc('\n', sop->ofp);
820 greg 1.2 }
821     if (xres > 0)
822 greg 1.31 fflush(sop->ofp);
823 greg 1.1 }
824 greg 1.45 sop->reclen += noopen; /* add to length if noopen */
825     return sop; /* return output stream */
826     openerr:
827     sprintf(errmsg, "cannot open '%s' for writing", oname);
828     error(SYSTEM, errmsg);
829     return NULL; /* pro forma return */
830 greg 1.1 }
831    
832     /* read input ray into buffer */
833     int
834     getinp(char *buf, FILE *fp)
835     {
836 greg 1.45 double dv[3], *dvp;
837     float *fvp;
838 greg 1.4 char *cp;
839     int i;
840    
841 greg 1.1 switch (inpfmt) {
842     case 'a':
843 greg 1.4 cp = buf; /* make sure we get 6 floats */
844     for (i = 0; i < 6; i++) {
845     if (fgetword(cp, buf+127-cp, fp) == NULL)
846 greg 1.36 return -1;
847     if (i >= 3)
848     dv[i-3] = atof(cp);
849 greg 1.4 if ((cp = fskip(cp)) == NULL || *cp)
850 greg 1.36 return -1;
851 greg 1.4 *cp++ = ' ';
852     }
853     getc(fp); /* get/put eol */
854     *cp-- = '\0'; *cp = '\n';
855 greg 1.36 if (DOT(dv,dv) <= FTINY*FTINY)
856     return 0; /* dummy ray */
857 greg 1.1 return strlen(buf);
858     case 'f':
859     if (fread(buf, sizeof(float), 6, fp) < 6)
860 greg 1.36 return -1;
861 greg 1.45 fvp = (float *)buf + 3;
862     if (DOT(fvp,fvp) <= FTINY*FTINY)
863 greg 1.36 return 0; /* dummy ray */
864 greg 1.1 return sizeof(float)*6;
865     case 'd':
866     if (fread(buf, sizeof(double), 6, fp) < 6)
867 greg 1.36 return -1;
868 greg 1.45 dvp = (double *)buf + 3;
869     if (DOT(dvp,dvp) <= FTINY*FTINY)
870 greg 1.36 return 0; /* dummy ray */
871 greg 1.1 return sizeof(double)*6;
872     }
873     error(INTERNAL, "botched input format");
874 greg 1.36 return -1; /* pro forma return */
875 greg 1.1 }
876    
877 greg 1.2 static float rparams[9]; /* traced ray parameters */
878 greg 1.1
879     /* return channel (ray) value */
880     double
881     chanvalue(int n)
882     {
883     if (--n < 0 || n >= 6)
884     error(USER, "illegal channel number ($N)");
885 greg 1.2 return rparams[n+3];
886 greg 1.1 }
887    
888 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
889 greg 1.1 void
890 greg 1.2 add_contrib(const char *modn)
891 greg 1.1 {
892     LUENT *le = lu_find(&modconttab, modn);
893     MODCONT *mp = (MODCONT *)le->data;
894     int bn;
895    
896     if (mp == NULL) {
897     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
898     error(USER, errmsg);
899     }
900 greg 1.2 eclock++; /* get bin number */
901 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
902     if (bn <= 0)
903     bn = 0;
904 greg 1.31 else if (bn >= mp->nbins) /* new bin */
905     le->data = (char *)(mp = growmodifier(mp, bn+1));
906 greg 1.2 addcolor(mp->cbin[bn], rparams);
907 greg 1.1 }
908    
909     /* output newline to ASCII file and/or flush as requested */
910     static int
911     puteol(const LUENT *e, void *p)
912     {
913 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
914 greg 1.1
915     if (outfmt == 'a')
916 greg 1.31 putc('\n', sop->ofp);
917 greg 1.1 if (!waitflush)
918 greg 1.31 fflush(sop->ofp);
919     if (ferror(sop->ofp)) {
920 greg 1.1 sprintf(errmsg, "write error on file '%s'", e->key);
921     error(SYSTEM, errmsg);
922     }
923     return 0;
924     }
925    
926 greg 1.2 /* put out ray contribution to file */
927     void
928 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
929 greg 1.2 {
930     float fv[3];
931     COLR cv;
932    
933     switch (outfmt) {
934     case 'a':
935     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
936     break;
937     case 'f':
938     fv[0] = cnt[0];
939     fv[1] = cnt[1];
940     fv[2] = cnt[2];
941     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     done_contrib(void)
958     {
959 greg 1.31 int i, j;
960     MODCONT *mp;
961     STREAMOUT *sop;
962 greg 1.1 /* output modifiers in order */
963     for (i = 0; i < nmods; i++) {
964     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
965 greg 1.31 sop = getostream(mp->outspec, mp->modname, 0,0);
966     put_contrib(mp->cbin[0], sop->ofp);
967 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
968 greg 1.31 sop == getostream(mp->outspec, mp->modname, 1,0))
969 greg 1.12 for (j = 1; j < mp->nbins; j++)
970 greg 1.31 put_contrib(mp->cbin[j], sop->ofp);
971 greg 1.12 else
972     for (j = 1; j < mp->nbins; j++)
973 greg 1.14 put_contrib(mp->cbin[j],
974 greg 1.31 getostream(mp->outspec,mp->modname,j,0)->ofp);
975 greg 1.45 /* clear for next time */
976 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
977 greg 1.1 }
978     --waitflush; /* terminate records */
979     lu_doall(&ofiletab, puteol, NULL);
980 greg 1.2 if (using_stdout & (outfmt == 'a'))
981     putc('\n', stdout);
982     if (!waitflush) {
983 greg 1.1 waitflush = xres;
984 greg 1.2 if (using_stdout)
985     fflush(stdout);
986     }
987 greg 1.1 }
988    
989 greg 1.3 /* queue completed ray tree produced by rtrace process */
990     void
991     queue_raytree(struct rtproc *rtp)
992     {
993     struct rtproc *rtu, *rtl = NULL;
994     /* insert following ray order */
995     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
996     if (rtp->raynum < rtu->raynum)
997     break;
998     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
999     if (rtu == NULL)
1000     error(SYSTEM, "out of memory in queue_raytree");
1001     *rtu = *rtp;
1002     if (rtl == NULL) {
1003     rtu->next = rt_unproc;
1004     rt_unproc = rtu;
1005     } else {
1006     rtu->next = rtl->next;
1007     rtl->next = rtu;
1008     }
1009     rtp->raynum = 0; /* clear path for next ray tree */
1010     rtp->bsiz = 0;
1011     rtp->buf = NULL;
1012     rtp->nbr = 0;
1013     }
1014    
1015     /* process completed ray trees from our queue */
1016 greg 1.1 void
1017 greg 1.3 process_queue(void)
1018 greg 1.1 {
1019 greg 1.3 char modname[128];
1020     /* ray-ordered queue */
1021     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
1022     struct rtproc *rtp = rt_unproc;
1023 greg 1.2 int n = rtp->nbr;
1024 greg 1.1 const char *cp = rtp->buf;
1025     while (n > 0) { /* process rays */
1026 greg 1.2 register char *mnp = modname;
1027 greg 1.1 /* skip leading tabs */
1028     while (n > 0 && *cp == '\t') {
1029     cp++; n--;
1030     }
1031 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
1032     error(USER, "bad modifier name from rtrace");
1033     /* get modifier name */
1034 greg 1.40 while (n > 1 && *cp != '\t') {
1035     if (mnp - modname >= sizeof(modname)-2)
1036     error(INTERNAL, "modifier name too long");
1037 greg 1.1 *mnp++ = *cp++; n--;
1038     }
1039     *mnp = '\0';
1040 greg 1.2 cp++; n--; /* eat following tab */
1041 greg 1.1 if (n < (int)(sizeof(float)*9))
1042     error(USER, "incomplete ray value from rtrace");
1043     /* add ray contribution */
1044 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
1045 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
1046 greg 1.2 add_contrib(modname);
1047 greg 1.1 }
1048 greg 1.45 if (!accumulate)
1049     done_contrib(); /* sum up contributions & output */
1050 greg 1.1 lastdone = rtp->raynum;
1051 greg 1.36 if (rtp->buf != NULL) /* free up buffer space */
1052     free(rtp->buf);
1053 greg 1.3 rt_unproc = rtp->next;
1054     free(rtp); /* done with this ray tree */
1055 greg 1.1 }
1056     }
1057    
1058     /* wait for rtrace process to finish with ray tree */
1059     struct rtproc *
1060     wait_rproc(void)
1061     {
1062     struct rtproc *rtfree = NULL;
1063     fd_set readset, errset;
1064     int nr;
1065     struct rtproc *rt;
1066     int n;
1067    
1068     do {
1069     nr = 0; /* prepare select call */
1070     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
1071     for (rt = &rt0; rt != NULL; rt = rt->next) {
1072     if (rt->raynum) {
1073     FD_SET(rt->pd.r, &readset);
1074     ++nr;
1075     }
1076     FD_SET(rt->pd.r, &errset);
1077     if (rt->pd.r >= n)
1078     n = rt->pd.r + 1;
1079     }
1080     if (!nr) /* no rays pending */
1081     break;
1082     if (nr > 1) { /* call select for multiple proc's */
1083     errno = 0;
1084     if (select(n, &readset, NULL, &errset, NULL) < 0)
1085     error(SYSTEM, "select call error in wait_rproc()");
1086     } else
1087     FD_ZERO(&errset);
1088     nr = 0;
1089     for (rt = &rt0; rt != NULL; rt = rt->next) {
1090     if (!FD_ISSET(rt->pd.r, &readset) &&
1091     !FD_ISSET(rt->pd.r, &errset))
1092     continue;
1093     if (rt->buf == NULL) {
1094     rt->bsiz = treebufsiz;
1095     rt->buf = (char *)malloc(treebufsiz);
1096 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
1097 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
1098     rt->bsiz = treebufsiz;
1099     else
1100 greg 1.28 treebufsiz = rt->bsiz += BUFSIZ;
1101 greg 1.1 rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1102     }
1103     if (rt->buf == NULL)
1104     error(SYSTEM, "out of memory in wait_rproc");
1105 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1106     if (nr <= 0)
1107 greg 1.1 error(USER, "rtrace process died");
1108 greg 1.2 rt->nbr += nr; /* advance & check */
1109     if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
1110     "~\t~\t", 4)) {
1111     rt->nbr -= 4; /* elide terminator */
1112 greg 1.3 queue_raytree(rt);
1113 greg 1.1 rtfree = rt; /* ready for next ray */
1114     }
1115     }
1116     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
1117     return rtfree;
1118     }
1119    
1120     /* return next available rtrace process */
1121     struct rtproc *
1122     get_rproc(void)
1123     {
1124     struct rtproc *rtp;
1125     /* check for idle rtrace */
1126     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
1127     if (!rtp->raynum)
1128     return rtp;
1129     return wait_rproc(); /* need to wait for one */
1130     }
1131    
1132     /* trace ray contributions (main loop) */
1133     void
1134 greg 1.5 trace_contribs(FILE *fin)
1135 greg 1.1 {
1136     char inpbuf[128];
1137     int iblen;
1138     struct rtproc *rtp;
1139     /* loop over input */
1140 greg 1.36 while ((iblen = getinp(inpbuf, fin)) >= 0) {
1141     if (!iblen || /* need reset? */
1142     queue_length() > 10*nrtprocs() ||
1143     lastray+1 < lastray) {
1144 greg 1.1 while (wait_rproc() != NULL)
1145 greg 1.3 process_queue();
1146 greg 1.34 if (lastray+1 < lastray)
1147     lastdone = lastray = 0;
1148 greg 1.1 }
1149     rtp = get_rproc(); /* get avail. rtrace process */
1150 greg 1.36 rtp->raynum = ++lastray; /* assign ray */
1151     if (iblen) { /* trace ray if valid */
1152     writebuf(rtp->pd.w, inpbuf, iblen);
1153     } else { /* else bypass dummy ray */
1154     queue_raytree(rtp); /* empty tree */
1155 greg 1.38 if ((yres <= 0) | (waitflush > 1))
1156 greg 1.36 waitflush = 1; /* flush after this */
1157     }
1158 greg 1.38 process_queue(); /* catch up with results */
1159 greg 1.14 if (raysleft && !--raysleft)
1160 greg 1.38 break; /* preemptive EOI */
1161 greg 1.1 }
1162     while (wait_rproc() != NULL) /* process outstanding rays */
1163 greg 1.3 process_queue();
1164 greg 1.45 if (accumulate)
1165     done_contrib(); /* output tallies */
1166 greg 1.14 if (raysleft)
1167 greg 1.2 error(USER, "unexpected EOF on input");
1168 greg 1.14 lu_done(&ofiletab); /* close output files */
1169     }
1170    
1171     /* seek on the given output file */
1172     static int
1173     myseeko(const LUENT *e, void *p)
1174     {
1175 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
1176     off_t nbytes = *(off_t *)p;
1177    
1178     if (sop->reclen > 1)
1179     nbytes = nbytes * sop->reclen;
1180     if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1181 greg 1.14 sprintf(errmsg, "seek error on file '%s'", e->key);
1182     error(SYSTEM, errmsg);
1183     }
1184 schorsch 1.43 return 0;
1185 greg 1.14 }
1186    
1187 greg 1.45 /* load previously accumulated values */
1188     void
1189     reload_output(void)
1190     {
1191     int i, j;
1192     MODCONT *mp;
1193     int ofl;
1194     char oname[1024];
1195     char *fmode = "rb";
1196     char *outvfmt;
1197     LUENT *ment, *oent;
1198     STREAMOUT sout;
1199    
1200     error(INTERNAL, "-r option not yet implemented with -c");
1201    
1202     switch (outfmt) {
1203     case 'a':
1204     outvfmt = "ascii";
1205     fmode = "r";
1206     break;
1207     case 'f':
1208     outvfmt = "float";
1209     break;
1210     case 'd':
1211     outvfmt = "double";
1212     break;
1213     case 'c':
1214     outvfmt = COLRFMT;
1215     break;
1216     default:
1217     error(INTERNAL, "botched output format");
1218     return;
1219     }
1220     /* check modifier outputs */
1221     for (i = 0; i < nmods; i++) {
1222     ment = lu_find(&modconttab,modname[i]);
1223     mp = (MODCONT *)ment->data;
1224     if (mp->outspec == NULL)
1225     error(USER, "cannot reload from stdout");
1226     if (mp->outspec[0] == '!')
1227     error(USER, "cannot reload from command");
1228     for (j = 0; ; j++) { /* check each bin's file */
1229     ofl = ofname(oname, mp->outspec, mp->modname, j);
1230     if (ofl < 0)
1231     error(USER, "bad output file specification");
1232     oent = lu_find(&ofiletab, oname);
1233     if (oent->data != NULL) {
1234     sout = *(STREAMOUT *)oent->data;
1235     } else {
1236     sout.reclen = 0;
1237     sout.ofp = NULL;
1238     }
1239     if (sout.ofp != NULL) { /* already open? */
1240     if (ofl & OF_BIN)
1241     continue;
1242     break;
1243     }
1244     /* open output */
1245     sout.ofp = fopen(oname, fmode);
1246     if (sout.ofp == NULL) {
1247     if (j)
1248     break; /* assume end of modifier */
1249     sprintf(errmsg, "missing reload file '%s'",
1250     oname);
1251     error(WARNING, errmsg);
1252     break;
1253     }
1254     if (oent->key == NULL) /* new entry */
1255     oent->key = strcpy((char *)
1256     malloc(strlen(oname)+1), oname);
1257     if (oent->data == NULL)
1258     oent->data = (char *)malloc(sizeof(STREAMOUT));
1259     *(STREAMOUT *)oent->data = sout;
1260     if (!(ofl & OF_BIN))
1261     break; /* no bin separation */
1262     }
1263     if (j > mp->nbins) /* reallocate modifier bins */
1264     ment->data = (char *)(mp = growmodifier(mp, j));
1265     }
1266     lu_done(&ofiletab); /* close all files */
1267     }
1268    
1269 greg 1.14 /* recover output if possible */
1270     void
1271     recover_output(FILE *fin)
1272     {
1273 greg 1.31 off_t lastout = -1;
1274     int outvsiz, recsiz;
1275     char *outvfmt;
1276     int i, j;
1277     MODCONT *mp;
1278     int ofl;
1279     char oname[1024];
1280     LUENT *ment, *oent;
1281     STREAMOUT sout;
1282     off_t nvals;
1283     int xr, yr;
1284 greg 1.14
1285     switch (outfmt) {
1286     case 'a':
1287     error(USER, "cannot recover ASCII output");
1288     return;
1289     case 'f':
1290     outvsiz = sizeof(float)*3;
1291     outvfmt = "float";
1292     break;
1293     case 'd':
1294     outvsiz = sizeof(double)*3;
1295     outvfmt = "double";
1296     break;
1297     case 'c':
1298     outvsiz = sizeof(COLR);
1299     outvfmt = COLRFMT;
1300     break;
1301     default:
1302     error(INTERNAL, "botched output format");
1303     return;
1304     }
1305     /* check modifier outputs */
1306     for (i = 0; i < nmods; i++) {
1307     ment = lu_find(&modconttab,modname[i]);
1308     mp = (MODCONT *)ment->data;
1309     if (mp->outspec == NULL)
1310     error(USER, "cannot recover from stdout");
1311 greg 1.31 if (mp->outspec[0] == '!')
1312     error(USER, "cannot recover from command");
1313 greg 1.14 for (j = 0; ; j++) { /* check each bin's file */
1314     ofl = ofname(oname, mp->outspec, mp->modname, j);
1315     if (ofl < 0)
1316     error(USER, "bad output file specification");
1317     oent = lu_find(&ofiletab, oname);
1318 greg 1.31 if (oent->data != NULL) {
1319     sout = *(STREAMOUT *)oent->data;
1320     } else {
1321 greg 1.45 sout.reclen = 0;
1322 greg 1.31 sout.ofp = NULL;
1323     }
1324     if (sout.ofp != NULL) { /* already open? */
1325 greg 1.14 if (ofl & OF_BIN)
1326     continue;
1327     break;
1328     }
1329     /* open output */
1330 greg 1.31 sout.ofp = fopen(oname, "rb+");
1331     if (sout.ofp == NULL) {
1332 greg 1.23 if (j)
1333     break; /* assume end of modifier */
1334     sprintf(errmsg, "missing recover file '%s'",
1335     oname);
1336 greg 1.45 error(WARNING, errmsg);
1337     break;
1338 greg 1.23 }
1339 greg 1.31 nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1340 greg 1.14 if (nvals <= 0) {
1341     lastout = 0; /* empty output, quit here */
1342 greg 1.31 fclose(sout.ofp);
1343 greg 1.14 break;
1344     }
1345 greg 1.45 if (!sout.reclen) {
1346 greg 1.31 if (!(ofl & OF_BIN)) {
1347 greg 1.14 sprintf(errmsg,
1348 greg 1.32 "need -bn to recover file '%s'",
1349 greg 1.14 oname);
1350 greg 1.32 error(USER, errmsg);
1351 greg 1.14 }
1352 greg 1.31 recsiz = outvsiz;
1353     } else
1354     recsiz = outvsiz * sout.reclen;
1355    
1356     lseek(fileno(sout.ofp), 0, SEEK_SET);
1357     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1358     sprintf(errmsg, "format mismatch for '%s'",
1359     oname);
1360     error(USER, errmsg);
1361     }
1362     if ((xres > 0) & (yres > 0) &&
1363     (!fscnresolu(&xr, &yr, sout.ofp) ||
1364     xr != xres ||
1365     yr != yres)) {
1366     sprintf(errmsg, "resolution mismatch for '%s'",
1367     oname);
1368     error(USER, errmsg);
1369 greg 1.14 }
1370 greg 1.31 nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1371     if ((lastout < 0) | (nvals < lastout))
1372 greg 1.14 lastout = nvals;
1373 greg 1.31 if (oent->key == NULL) /* new entry */
1374 greg 1.14 oent->key = strcpy((char *)
1375     malloc(strlen(oname)+1), oname);
1376 greg 1.31 if (oent->data == NULL)
1377     oent->data = (char *)malloc(sizeof(STREAMOUT));
1378     *(STREAMOUT *)oent->data = sout;
1379 greg 1.14 if (!(ofl & OF_BIN))
1380     break; /* no bin separation */
1381     }
1382     if (!lastout) { /* empty output */
1383 greg 1.16 error(WARNING, "no previous data to recover");
1384 greg 1.14 lu_done(&ofiletab); /* reclose all outputs */
1385     return;
1386     }
1387 greg 1.31 if (j > mp->nbins) /* reallocate modifier bins */
1388     ment->data = (char *)(mp = growmodifier(mp, j));
1389 greg 1.14 }
1390 greg 1.15 if (lastout < 0) {
1391 greg 1.16 error(WARNING, "no output files to recover");
1392 greg 1.15 return;
1393     }
1394 greg 1.24 if (raysleft && lastout >= raysleft) {
1395     error(WARNING, "output appears to be complete");
1396     /* XXX should read & discard input? */
1397     quit(0);
1398     }
1399 greg 1.14 /* seek on all files */
1400     nvals = lastout * outvsiz;
1401     lu_doall(&ofiletab, myseeko, &nvals);
1402 greg 1.28 /* skip repeated input */
1403 greg 1.14 for (nvals = 0; nvals < lastout; nvals++)
1404 greg 1.36 if (getinp(oname, fin) < 0)
1405 greg 1.14 error(USER, "unexpected EOF on input");
1406     lastray = lastdone = (unsigned long)lastout;
1407     if (raysleft)
1408     raysleft -= lastray;
1409 greg 1.1 }