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root/radiance/ray/src/util/rtcontrib.c
Revision: 1.48
Committed: Sat Nov 17 16:27:14 2007 UTC (16 years, 5 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.47: +14 -12 lines
Log Message: 
Minor fixes in reloading procedure

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.48 static const char RCSid[] = "$Id: rtcontrib.c,v 1.47 2007/11/17 15:57:28 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 1.46 int recover = 0; /* recover previous output? */
137 greg 1.1 int xres = 0; /* horiz. output resolution */
138     int yres = 0; /* vert. output resolution */
139    
140 greg 1.14 unsigned long raysleft; /* number of rays left to trace */
141 greg 1.1 long waitflush; /* how long until next flush */
142    
143     unsigned long lastray = 0; /* last ray number sent */
144     unsigned long lastdone = 0; /* last ray processed */
145    
146 greg 1.2 int using_stdout = 0; /* are we using stdout? */
147    
148 greg 1.1 const char *modname[MAXMODLIST]; /* ordered modifier name list */
149     int nmods = 0; /* number of modifiers */
150    
151 greg 1.29 #define queue_length() (lastray - lastdone)
152    
153 greg 1.31 MODCONT *growmodifier(MODCONT *mp, int nb);
154     MODCONT *addmodifier(char *modn, char *outf, char *binv, int bincnt);
155     void addmodfile(char *fname, char *outf, char *binv, int bincnt);
156 greg 1.1
157 greg 1.5 void init(int np);
158 greg 1.1 int done_rprocs(struct rtproc *rtp);
159 greg 1.45 void reload_output(void);
160 greg 1.14 void recover_output(FILE *fin);
161     void trace_contribs(FILE *fin);
162 greg 1.1 struct rtproc *wait_rproc(void);
163     struct rtproc *get_rproc(void);
164 greg 1.3 void queue_raytree(struct rtproc *rtp);
165     void process_queue(void);
166 greg 1.1
167 greg 1.14 void put_contrib(const DCOLOR cnt, FILE *fout);
168 greg 1.2 void add_contrib(const char *modn);
169 greg 1.1 void done_contrib(void);
170    
171 greg 1.29 /* return number of open rtrace processes */
172     static int
173     nrtprocs(void)
174     {
175     int nrtp = 0;
176     struct rtproc *rtp;
177    
178     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
179     nrtp += rtp->pd.running;
180     return(nrtp);
181     }
182    
183 greg 1.1 /* set input/output format */
184     static void
185     setformat(const char *fmt)
186     {
187     switch (fmt[0]) {
188     case 'f':
189     case 'd':
190 greg 1.10 SET_FILE_BINARY(stdin);
191     /* fall through */
192     case 'a':
193 greg 1.1 inpfmt = fmt[0];
194     break;
195     default:
196     goto fmterr;
197     }
198     switch (fmt[1]) {
199     case '\0':
200     outfmt = inpfmt;
201     return;
202     case 'a':
203     case 'f':
204     case 'd':
205     case 'c':
206     outfmt = fmt[1];
207     break;
208     default:
209     goto fmterr;
210     }
211     if (!fmt[2])
212     return;
213     fmterr:
214     sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
215     error(USER, errmsg);
216     }
217    
218     /* gather rays from rtrace and output contributions */
219     int
220     main(int argc, char *argv[])
221     {
222 greg 1.40 int contrib = 0;
223 greg 1.1 int nprocs = 1;
224     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 greg 1.46 recover = 1;
297 greg 1.40 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 greg 1.46 force_open = 1;
332 greg 1.35 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 1.46 /* start rtrace & recover if requested */
441 greg 1.1 init(nprocs);
442 greg 1.46 /* compute contributions */
443     trace_contribs(stdin);
444     /* clean up */
445 greg 1.1 quit(0);
446     }
447    
448 schorsch 1.26 #ifndef SIGALRM
449     #define SIGALRM SIGTERM
450     #endif
451 greg 1.1 /* kill persistent rtrace process */
452     static void
453     killpersist(void)
454     {
455     FILE *fp = fopen(persistfn, "r");
456 schorsch 1.26 RT_PID pid;
457 greg 1.1
458     if (fp == NULL)
459     return;
460     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
461     unlink(persistfn);
462     fclose(fp);
463     }
464    
465     /* close rtrace processes and clean up */
466     int
467     done_rprocs(struct rtproc *rtp)
468     {
469     int st0, st1 = 0;
470    
471     if (rtp->next != NULL) { /* close last opened first! */
472     st1 = done_rprocs(rtp->next);
473     free((void *)rtp->next);
474     rtp->next = NULL;
475     }
476     st0 = close_process(&rtp->pd);
477     if (st0 < 0)
478     error(WARNING, "unknown return status from rtrace process");
479     else if (st0 > 0)
480     return(st0);
481     return(st1);
482     }
483    
484     /* exit with status */
485     void
486     quit(int status)
487     {
488     int rtstat;
489    
490 greg 1.45 if (persist_state == PERSIST_OURS) /* terminate waiting rtrace */
491 greg 1.1 killpersist();
492     /* clean up rtrace process(es) */
493     rtstat = done_rprocs(&rt0);
494     if (status == 0)
495     status = rtstat;
496     exit(status); /* flushes all output streams */
497     }
498    
499 greg 1.5 /* start rtrace processes and initialize */
500 greg 1.1 void
501     init(int np)
502     {
503     struct rtproc *rtp;
504     int i;
505     int maxbytes;
506 greg 1.2 /* make sure we have something to do */
507     if (!nmods)
508     error(USER, "No modifiers specified");
509 greg 1.1 /* assign ray variables */
510     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
511     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
512     /* set up signal handling */
513 greg 1.3 signal(SIGINT, quit);
514     #ifdef SIGHUP
515     signal(SIGHUP, quit);
516     #endif
517     #ifdef SIGTERM
518     signal(SIGTERM, quit);
519     #endif
520     #ifdef SIGPIPE
521 greg 1.1 signal(SIGPIPE, quit);
522     #endif
523     rtp = &rt0; /* start rtrace process(es) */
524     for (i = 0; i++ < np; ) {
525     errno = 0;
526     maxbytes = open_process(&rtp->pd, rtargv);
527     if (maxbytes == 0) {
528     eputs(rtargv[0]);
529     eputs(": command not found\n");
530     exit(1);
531     }
532     if (maxbytes < 0)
533     error(SYSTEM, "cannot start rtrace process");
534     if (maxbytes > treebufsiz)
535     treebufsiz = maxbytes;
536 greg 1.2 rtp->raynum = 0;
537 greg 1.1 rtp->bsiz = 0;
538     rtp->buf = NULL;
539 greg 1.2 rtp->nbr = 0;
540 greg 1.1 if (i == np) /* last process? */
541     break;
542     if (i == 1)
543     sleep(2); /* wait for persist file */
544     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
545     if (rtp->next == NULL)
546     error(SYSTEM, "out of memory in init");
547     rtp = rtp->next;
548     }
549     rtp->next = NULL; /* terminate list */
550     if (yres > 0) {
551     if (xres > 0)
552 greg 1.14 raysleft = (unsigned long)xres*yres;
553 greg 1.1 else
554     raysleft = yres;
555     } else
556     raysleft = 0;
557     waitflush = xres;
558 greg 1.46 if (!recover)
559     return;
560     /* recover previous values */
561     if (accumulate)
562     reload_output();
563     else
564     recover_output(stdin);
565 greg 1.1 }
566    
567 greg 1.31 /* grow modifier to accommodate more bins */
568     MODCONT *
569     growmodifier(MODCONT *mp, int nb)
570     {
571     if (nb <= mp->nbins)
572     return mp;
573     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
574     if (mp == NULL)
575     error(SYSTEM, "out of memory in growmodifier");
576     memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
577     mp->nbins = nb;
578     return mp;
579     }
580    
581 greg 1.1 /* add modifier to our list to track */
582     MODCONT *
583 greg 1.31 addmodifier(char *modn, char *outf, char *binv, int bincnt)
584 greg 1.1 {
585     LUENT *lep = lu_find(&modconttab, modn);
586     MODCONT *mp;
587 greg 1.32 int i;
588 greg 1.1
589     if (lep->data != NULL) {
590     sprintf(errmsg, "duplicate modifier '%s'", modn);
591     error(USER, errmsg);
592     }
593     if (nmods >= MAXMODLIST)
594     error(USER, "too many modifiers");
595     modname[nmods++] = modn; /* XXX assumes static string */
596     lep->key = modn; /* XXX assumes static string */
597     mp = (MODCONT *)malloc(sizeof(MODCONT));
598     if (mp == NULL)
599     error(SYSTEM, "out of memory in addmodifier");
600     mp->outspec = outf; /* XXX assumes static string */
601     mp->modname = modn; /* XXX assumes static string */
602     if (binv != NULL)
603     mp->binv = eparse(binv);
604     else
605     mp->binv = eparse("0");
606     mp->nbins = 1;
607     setcolor(mp->cbin[0], 0., 0., 0.);
608 greg 1.31 if (mp->binv->type == NUM) /* assume one bin if constant */
609     bincnt = 1;
610     else if (bincnt > 1)
611     mp = growmodifier(mp, bincnt);
612 greg 1.32 lep->data = (char *)mp;
613     /* allocate output streams */
614 greg 1.45 for (i = bincnt; i-- > 0; )
615 greg 1.32 getostream(mp->outspec, mp->modname, i, 1);
616 greg 1.1 return mp;
617     }
618    
619 greg 1.17 /* add modifiers from a file list */
620     void
621 greg 1.31 addmodfile(char *fname, char *outf, char *binv, int bincnt)
622 greg 1.17 {
623     char *mname[MAXMODLIST];
624     int i;
625 greg 1.20 /* find the file & store strings */
626     if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) {
627     sprintf(errmsg, "cannot find modifier file '%s'", fname);
628     error(SYSTEM, errmsg);
629     }
630 greg 1.17 for (i = 0; mname[i]; i++) /* add each one */
631 greg 1.31 addmodifier(mname[i], outf, binv, bincnt);
632 greg 1.17 }
633    
634 greg 1.1 /* put string to stderr */
635     void
636     eputs(char *s)
637     {
638     static int midline = 0;
639    
640     if (!*s) return;
641     if (!midline) {
642     fputs(progname, stderr);
643     fputs(": ", stderr);
644     }
645     fputs(s, stderr);
646     midline = s[strlen(s)-1] != '\n';
647     }
648    
649 greg 1.14 /* construct output file name and return flags whether modifier/bin present */
650     int
651     ofname(char *oname, const char *ospec, const char *mname, int bn)
652     {
653     const char *mnp = NULL;
654     const char *bnp = NULL;
655     const char *cp;
656    
657     if (ospec == NULL)
658     return -1;
659     for (cp = ospec; *cp; cp++) /* check format position(s) */
660     if (*cp == '%') {
661     do
662     ++cp;
663     while (isdigit(*cp));
664     switch (*cp) {
665     case '%':
666     break;
667     case 's':
668     if (mnp != NULL)
669     return -1;
670     mnp = cp;
671     break;
672     case 'd':
673     if (bnp != NULL)
674     return -1;
675     bnp = cp;
676     break;
677     default:
678     return -1;
679     }
680     }
681     if (mnp != NULL) { /* create file name */
682     if (bnp != NULL) {
683     if (bnp > mnp)
684     sprintf(oname, ospec, mname, bn);
685     else
686     sprintf(oname, ospec, bn, mname);
687     return OF_MODIFIER|OF_BIN;
688     }
689     sprintf(oname, ospec, mname);
690     return OF_MODIFIER;
691     }
692     if (bnp != NULL) {
693     sprintf(oname, ospec, bn);
694     return OF_BIN;
695     }
696     strcpy(oname, ospec);
697     return 0;
698     }
699    
700 greg 1.1 /* write header to the given output stream */
701     void
702 greg 1.14 printheader(FILE *fout, const char *info)
703 greg 1.1 {
704     extern char VersionID[];
705     FILE *fin = fopen(octree, "r");
706    
707     if (fin == NULL)
708     quit(1);
709 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
710 greg 1.1 fclose(fin);
711     printargs(gargc-1, gargv, fout); /* add our command */
712     fprintf(fout, "SOFTWARE= %s\n", VersionID);
713     fputnow(fout);
714 greg 1.14 if (info != NULL) /* add extra info if given */
715     fputs(info, fout);
716 greg 1.1 switch (outfmt) { /* add output format */
717     case 'a':
718     fputformat("ascii", fout);
719     break;
720     case 'f':
721     fputformat("float", fout);
722     break;
723     case 'd':
724     fputformat("double", fout);
725     break;
726     case 'c':
727     fputformat(COLRFMT, fout);
728     break;
729     }
730     fputc('\n', fout);
731 greg 1.30 }
732    
733     /* write resolution string to given output stream */
734     void
735 greg 1.45 printresolu(FILE *fout, int xr, int yr)
736 greg 1.30 {
737 greg 1.45 if ((xr > 0) & (yr > 0)) /* resolution string */
738     fprtresolu(xr, yr, fout);
739     if (xres > 0) /* global flush flag */
740 greg 1.1 fflush(fout);
741     }
742    
743 greg 1.32 /* Get output stream pointer (open and write header if new and noopen==0) */
744 greg 1.31 STREAMOUT *
745 greg 1.32 getostream(const char *ospec, const char *mname, int bn, int noopen)
746 greg 1.31 {
747 greg 1.45 static const DCOLOR nocontrib = BLKCOLOR;
748 greg 1.31 static STREAMOUT stdos;
749     int ofl;
750     char oname[1024];
751     LUENT *lep;
752     STREAMOUT *sop;
753 greg 1.1
754     if (ospec == NULL) { /* use stdout? */
755 greg 1.32 if (!noopen && !using_stdout) {
756 greg 1.10 if (outfmt != 'a')
757     SET_FILE_BINARY(stdout);
758     if (header)
759 greg 1.14 printheader(stdout, NULL);
760 greg 1.45 printresolu(stdout, xres, yres);
761     stdos.xr = xres; stdos.yr = yres;
762 greg 1.31 using_stdout = 1;
763 greg 1.10 }
764 greg 1.31 stdos.ofp = stdout;
765 greg 1.32 stdos.reclen += noopen;
766 greg 1.31 return &stdos;
767 greg 1.1 }
768 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
769     if (ofl < 0) {
770     sprintf(errmsg, "bad output format '%s'", ospec);
771     error(USER, errmsg);
772     }
773     lep = lu_find(&ofiletab, oname); /* look it up */
774 greg 1.1 if (lep->key == NULL) /* new entry */
775 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
776 greg 1.31 sop = (STREAMOUT *)lep->data;
777     if (sop == NULL) { /* allocate stream */
778     sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
779     if (sop == NULL)
780     error(SYSTEM, "out of memory in getostream");
781 greg 1.45 sop->outpipe = oname[0] == '!';
782     sop->reclen = 0;
783 greg 1.32 sop->ofp = NULL; /* open iff noopen==0 */
784 greg 1.45 sop->xr = xres; sop->yr = yres;
785 greg 1.31 lep->data = (char *)sop;
786 greg 1.46 if (!sop->outpipe & !force_open & !recover &&
787     access(oname, F_OK) == 0) {
788 greg 1.45 errno = EEXIST; /* file exists */
789     goto openerr;
790     }
791 greg 1.31 }
792 greg 1.32 if (!noopen && sop->ofp == NULL) { /* open output stream */
793 greg 1.34 long i;
794 greg 1.14 if (oname[0] == '!') /* output to command */
795 greg 1.31 sop->ofp = popen(oname+1, "w");
796 greg 1.45 else /* else open file */
797 greg 1.31 sop->ofp = fopen(oname, "w");
798 greg 1.45 if (sop->ofp == NULL)
799     goto openerr;
800 greg 1.10 if (outfmt != 'a')
801 greg 1.31 SET_FILE_BINARY(sop->ofp);
802 greg 1.14 if (header) {
803     char info[512];
804     char *cp = info;
805 greg 1.32 if (ofl & OF_MODIFIER || sop->reclen == 1) {
806 greg 1.30 sprintf(cp, "MODIFIER=%s\n", mname);
807     while (*cp) ++cp;
808     }
809 greg 1.14 if (ofl & OF_BIN) {
810     sprintf(cp, "BIN=%d\n", bn);
811     while (*cp) ++cp;
812     }
813     *cp = '\0';
814 greg 1.31 printheader(sop->ofp, info);
815 greg 1.14 }
816 greg 1.47 if (!accumulate) { /* global res. for -c- */
817     sop->xr = xres; sop->yr = yres;
818     }
819 greg 1.45 printresolu(sop->ofp, sop->xr, sop->yr);
820 greg 1.2 /* play catch-up */
821 greg 1.45 for (i = accumulate ? 0 : lastdone; i--; ) {
822     int j = sop->reclen;
823     if (j <= 0) j = 1;
824     while (j--)
825     put_contrib(nocontrib, sop->ofp);
826 greg 1.2 if (outfmt == 'a')
827 greg 1.31 putc('\n', sop->ofp);
828 greg 1.2 }
829     if (xres > 0)
830 greg 1.31 fflush(sop->ofp);
831 greg 1.1 }
832 greg 1.45 sop->reclen += noopen; /* add to length if noopen */
833     return sop; /* return output stream */
834     openerr:
835     sprintf(errmsg, "cannot open '%s' for writing", oname);
836     error(SYSTEM, errmsg);
837     return NULL; /* pro forma return */
838 greg 1.1 }
839    
840     /* read input ray into buffer */
841     int
842     getinp(char *buf, FILE *fp)
843     {
844 greg 1.45 double dv[3], *dvp;
845     float *fvp;
846 greg 1.4 char *cp;
847     int i;
848    
849 greg 1.1 switch (inpfmt) {
850     case 'a':
851 greg 1.4 cp = buf; /* make sure we get 6 floats */
852     for (i = 0; i < 6; i++) {
853     if (fgetword(cp, buf+127-cp, fp) == NULL)
854 greg 1.36 return -1;
855     if (i >= 3)
856     dv[i-3] = atof(cp);
857 greg 1.4 if ((cp = fskip(cp)) == NULL || *cp)
858 greg 1.36 return -1;
859 greg 1.4 *cp++ = ' ';
860     }
861     getc(fp); /* get/put eol */
862     *cp-- = '\0'; *cp = '\n';
863 greg 1.36 if (DOT(dv,dv) <= FTINY*FTINY)
864     return 0; /* dummy ray */
865 greg 1.1 return strlen(buf);
866     case 'f':
867     if (fread(buf, sizeof(float), 6, fp) < 6)
868 greg 1.36 return -1;
869 greg 1.45 fvp = (float *)buf + 3;
870     if (DOT(fvp,fvp) <= FTINY*FTINY)
871 greg 1.36 return 0; /* dummy ray */
872 greg 1.1 return sizeof(float)*6;
873     case 'd':
874     if (fread(buf, sizeof(double), 6, fp) < 6)
875 greg 1.36 return -1;
876 greg 1.45 dvp = (double *)buf + 3;
877     if (DOT(dvp,dvp) <= FTINY*FTINY)
878 greg 1.36 return 0; /* dummy ray */
879 greg 1.1 return sizeof(double)*6;
880     }
881     error(INTERNAL, "botched input format");
882 greg 1.36 return -1; /* pro forma return */
883 greg 1.1 }
884    
885 greg 1.2 static float rparams[9]; /* traced ray parameters */
886 greg 1.1
887     /* return channel (ray) value */
888     double
889     chanvalue(int n)
890     {
891     if (--n < 0 || n >= 6)
892     error(USER, "illegal channel number ($N)");
893 greg 1.2 return rparams[n+3];
894 greg 1.1 }
895    
896 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
897 greg 1.1 void
898 greg 1.2 add_contrib(const char *modn)
899 greg 1.1 {
900     LUENT *le = lu_find(&modconttab, modn);
901     MODCONT *mp = (MODCONT *)le->data;
902     int bn;
903    
904     if (mp == NULL) {
905     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
906     error(USER, errmsg);
907     }
908 greg 1.2 eclock++; /* get bin number */
909 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
910     if (bn <= 0)
911     bn = 0;
912 greg 1.31 else if (bn >= mp->nbins) /* new bin */
913     le->data = (char *)(mp = growmodifier(mp, bn+1));
914 greg 1.2 addcolor(mp->cbin[bn], rparams);
915 greg 1.1 }
916    
917     /* output newline to ASCII file and/or flush as requested */
918     static int
919     puteol(const LUENT *e, void *p)
920     {
921 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
922 greg 1.1
923     if (outfmt == 'a')
924 greg 1.31 putc('\n', sop->ofp);
925 greg 1.1 if (!waitflush)
926 greg 1.31 fflush(sop->ofp);
927     if (ferror(sop->ofp)) {
928 greg 1.1 sprintf(errmsg, "write error on file '%s'", e->key);
929     error(SYSTEM, errmsg);
930     }
931     return 0;
932     }
933    
934 greg 1.2 /* put out ray contribution to file */
935     void
936 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
937 greg 1.2 {
938     float fv[3];
939     COLR cv;
940    
941     switch (outfmt) {
942     case 'a':
943     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
944     break;
945     case 'f':
946 greg 1.46 copycolor(fv, cnt);
947 greg 1.2 fwrite(fv, sizeof(float), 3, fout);
948     break;
949     case 'd':
950     fwrite(cnt, sizeof(double), 3, fout);
951     break;
952     case 'c':
953     setcolr(cv, cnt[0], cnt[1], cnt[2]);
954     fwrite(cv, sizeof(cv), 1, fout);
955     break;
956     default:
957     error(INTERNAL, "botched output format");
958     }
959     }
960    
961 greg 1.45 /* output ray tallies and clear for next accumulation */
962 greg 1.1 void
963     done_contrib(void)
964     {
965 greg 1.31 int i, j;
966     MODCONT *mp;
967     STREAMOUT *sop;
968 greg 1.1 /* output modifiers in order */
969     for (i = 0; i < nmods; i++) {
970     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
971 greg 1.31 sop = getostream(mp->outspec, mp->modname, 0,0);
972     put_contrib(mp->cbin[0], sop->ofp);
973 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
974 greg 1.31 sop == getostream(mp->outspec, mp->modname, 1,0))
975 greg 1.12 for (j = 1; j < mp->nbins; j++)
976 greg 1.31 put_contrib(mp->cbin[j], sop->ofp);
977 greg 1.12 else
978     for (j = 1; j < mp->nbins; j++)
979 greg 1.14 put_contrib(mp->cbin[j],
980 greg 1.31 getostream(mp->outspec,mp->modname,j,0)->ofp);
981 greg 1.45 /* clear for next time */
982 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
983 greg 1.1 }
984     --waitflush; /* terminate records */
985     lu_doall(&ofiletab, puteol, NULL);
986 greg 1.2 if (using_stdout & (outfmt == 'a'))
987     putc('\n', stdout);
988     if (!waitflush) {
989 greg 1.1 waitflush = xres;
990 greg 1.2 if (using_stdout)
991     fflush(stdout);
992     }
993 greg 1.1 }
994    
995 greg 1.3 /* queue completed ray tree produced by rtrace process */
996     void
997     queue_raytree(struct rtproc *rtp)
998     {
999     struct rtproc *rtu, *rtl = NULL;
1000     /* insert following ray order */
1001     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
1002     if (rtp->raynum < rtu->raynum)
1003     break;
1004     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
1005     if (rtu == NULL)
1006     error(SYSTEM, "out of memory in queue_raytree");
1007     *rtu = *rtp;
1008     if (rtl == NULL) {
1009     rtu->next = rt_unproc;
1010     rt_unproc = rtu;
1011     } else {
1012     rtu->next = rtl->next;
1013     rtl->next = rtu;
1014     }
1015     rtp->raynum = 0; /* clear path for next ray tree */
1016     rtp->bsiz = 0;
1017     rtp->buf = NULL;
1018     rtp->nbr = 0;
1019     }
1020    
1021     /* process completed ray trees from our queue */
1022 greg 1.1 void
1023 greg 1.3 process_queue(void)
1024 greg 1.1 {
1025 greg 1.3 char modname[128];
1026     /* ray-ordered queue */
1027     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
1028     struct rtproc *rtp = rt_unproc;
1029 greg 1.2 int n = rtp->nbr;
1030 greg 1.1 const char *cp = rtp->buf;
1031     while (n > 0) { /* process rays */
1032 greg 1.2 register char *mnp = modname;
1033 greg 1.1 /* skip leading tabs */
1034     while (n > 0 && *cp == '\t') {
1035     cp++; n--;
1036     }
1037 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
1038     error(USER, "bad modifier name from rtrace");
1039     /* get modifier name */
1040 greg 1.40 while (n > 1 && *cp != '\t') {
1041     if (mnp - modname >= sizeof(modname)-2)
1042     error(INTERNAL, "modifier name too long");
1043 greg 1.1 *mnp++ = *cp++; n--;
1044     }
1045     *mnp = '\0';
1046 greg 1.2 cp++; n--; /* eat following tab */
1047 greg 1.1 if (n < (int)(sizeof(float)*9))
1048     error(USER, "incomplete ray value from rtrace");
1049     /* add ray contribution */
1050 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
1051 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
1052 greg 1.2 add_contrib(modname);
1053 greg 1.1 }
1054 greg 1.45 if (!accumulate)
1055     done_contrib(); /* sum up contributions & output */
1056 greg 1.1 lastdone = rtp->raynum;
1057 greg 1.36 if (rtp->buf != NULL) /* free up buffer space */
1058     free(rtp->buf);
1059 greg 1.3 rt_unproc = rtp->next;
1060     free(rtp); /* done with this ray tree */
1061 greg 1.1 }
1062     }
1063    
1064     /* wait for rtrace process to finish with ray tree */
1065     struct rtproc *
1066     wait_rproc(void)
1067     {
1068     struct rtproc *rtfree = NULL;
1069     fd_set readset, errset;
1070     int nr;
1071     struct rtproc *rt;
1072     int n;
1073    
1074     do {
1075     nr = 0; /* prepare select call */
1076     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
1077     for (rt = &rt0; rt != NULL; rt = rt->next) {
1078     if (rt->raynum) {
1079     FD_SET(rt->pd.r, &readset);
1080     ++nr;
1081     }
1082     FD_SET(rt->pd.r, &errset);
1083     if (rt->pd.r >= n)
1084     n = rt->pd.r + 1;
1085     }
1086     if (!nr) /* no rays pending */
1087     break;
1088     if (nr > 1) { /* call select for multiple proc's */
1089     errno = 0;
1090     if (select(n, &readset, NULL, &errset, NULL) < 0)
1091     error(SYSTEM, "select call error in wait_rproc()");
1092     } else
1093     FD_ZERO(&errset);
1094     nr = 0;
1095     for (rt = &rt0; rt != NULL; rt = rt->next) {
1096     if (!FD_ISSET(rt->pd.r, &readset) &&
1097     !FD_ISSET(rt->pd.r, &errset))
1098     continue;
1099     if (rt->buf == NULL) {
1100     rt->bsiz = treebufsiz;
1101     rt->buf = (char *)malloc(treebufsiz);
1102 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
1103 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
1104     rt->bsiz = treebufsiz;
1105     else
1106 greg 1.28 treebufsiz = rt->bsiz += BUFSIZ;
1107 greg 1.1 rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1108     }
1109     if (rt->buf == NULL)
1110     error(SYSTEM, "out of memory in wait_rproc");
1111 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1112     if (nr <= 0)
1113 greg 1.1 error(USER, "rtrace process died");
1114 greg 1.2 rt->nbr += nr; /* advance & check */
1115     if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
1116     "~\t~\t", 4)) {
1117     rt->nbr -= 4; /* elide terminator */
1118 greg 1.3 queue_raytree(rt);
1119 greg 1.1 rtfree = rt; /* ready for next ray */
1120     }
1121     }
1122     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
1123     return rtfree;
1124     }
1125    
1126     /* return next available rtrace process */
1127     struct rtproc *
1128     get_rproc(void)
1129     {
1130     struct rtproc *rtp;
1131     /* check for idle rtrace */
1132     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
1133     if (!rtp->raynum)
1134     return rtp;
1135     return wait_rproc(); /* need to wait for one */
1136     }
1137    
1138     /* trace ray contributions (main loop) */
1139     void
1140 greg 1.5 trace_contribs(FILE *fin)
1141 greg 1.1 {
1142     char inpbuf[128];
1143     int iblen;
1144     struct rtproc *rtp;
1145     /* loop over input */
1146 greg 1.36 while ((iblen = getinp(inpbuf, fin)) >= 0) {
1147     if (!iblen || /* need reset? */
1148     queue_length() > 10*nrtprocs() ||
1149     lastray+1 < lastray) {
1150 greg 1.1 while (wait_rproc() != NULL)
1151 greg 1.3 process_queue();
1152 greg 1.34 if (lastray+1 < lastray)
1153     lastdone = lastray = 0;
1154 greg 1.1 }
1155     rtp = get_rproc(); /* get avail. rtrace process */
1156 greg 1.36 rtp->raynum = ++lastray; /* assign ray */
1157     if (iblen) { /* trace ray if valid */
1158     writebuf(rtp->pd.w, inpbuf, iblen);
1159     } else { /* else bypass dummy ray */
1160     queue_raytree(rtp); /* empty tree */
1161 greg 1.38 if ((yres <= 0) | (waitflush > 1))
1162 greg 1.36 waitflush = 1; /* flush after this */
1163     }
1164 greg 1.38 process_queue(); /* catch up with results */
1165 greg 1.14 if (raysleft && !--raysleft)
1166 greg 1.38 break; /* preemptive EOI */
1167 greg 1.1 }
1168     while (wait_rproc() != NULL) /* process outstanding rays */
1169 greg 1.3 process_queue();
1170 greg 1.45 if (accumulate)
1171     done_contrib(); /* output tallies */
1172 greg 1.14 if (raysleft)
1173 greg 1.2 error(USER, "unexpected EOF on input");
1174 greg 1.14 lu_done(&ofiletab); /* close output files */
1175     }
1176    
1177 greg 1.46 /* get ray contribution from previous file */
1178     static int
1179     get_contrib(DCOLOR cnt, FILE *finp)
1180     {
1181     COLOR fv;
1182     COLR cv;
1183    
1184     switch (outfmt) {
1185     case 'a':
1186     return(fscanf(finp,"%lf %lf %lf",&cnt[0],&cnt[1],&cnt[2]) == 3);
1187     case 'f':
1188     if (fread(fv, sizeof(fv[0]), 3, finp) != 3)
1189     return(0);
1190     copycolor(cnt, fv);
1191     return(1);
1192     case 'd':
1193     return(fread(cnt, sizeof(cnt[0]), 3, finp) == 3);
1194     case 'c':
1195     if (fread(cv, sizeof(cv), 1, finp) != 1)
1196     return(0);
1197     colr_color(fv, cv);
1198     copycolor(cnt, fv);
1199     return(1);
1200     default:
1201     error(INTERNAL, "botched output format");
1202     }
1203     return(0); /* pro forma return */
1204     }
1205    
1206     /* close output file opened for input */
1207 greg 1.14 static int
1208 greg 1.46 myclose(const LUENT *e, void *p)
1209 greg 1.14 {
1210 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
1211    
1212 greg 1.46 if (sop->ofp == NULL)
1213     return;
1214     fclose(sop->ofp);
1215     sop->ofp = NULL;
1216 greg 1.14 }
1217    
1218 greg 1.45 /* load previously accumulated values */
1219     void
1220     reload_output(void)
1221     {
1222     int i, j;
1223     MODCONT *mp;
1224     int ofl;
1225     char oname[1024];
1226     char *fmode = "rb";
1227     char *outvfmt;
1228     LUENT *ment, *oent;
1229 greg 1.46 int xr, yr;
1230 greg 1.45 STREAMOUT sout;
1231 greg 1.46 DCOLOR rgbv;
1232 greg 1.45
1233     switch (outfmt) {
1234     case 'a':
1235     outvfmt = "ascii";
1236     fmode = "r";
1237     break;
1238     case 'f':
1239     outvfmt = "float";
1240     break;
1241     case 'd':
1242     outvfmt = "double";
1243     break;
1244     case 'c':
1245     outvfmt = COLRFMT;
1246     break;
1247     default:
1248     error(INTERNAL, "botched output format");
1249     return;
1250     }
1251 greg 1.46 /* reload modifier values */
1252 greg 1.45 for (i = 0; i < nmods; i++) {
1253     ment = lu_find(&modconttab,modname[i]);
1254     mp = (MODCONT *)ment->data;
1255     if (mp->outspec == NULL)
1256     error(USER, "cannot reload from stdout");
1257     if (mp->outspec[0] == '!')
1258     error(USER, "cannot reload from command");
1259 greg 1.46 for (j = 0; ; j++) { /* load each modifier bin */
1260 greg 1.45 ofl = ofname(oname, mp->outspec, mp->modname, j);
1261     if (ofl < 0)
1262     error(USER, "bad output file specification");
1263     oent = lu_find(&ofiletab, oname);
1264     if (oent->data != NULL) {
1265     sout = *(STREAMOUT *)oent->data;
1266     } else {
1267     sout.reclen = 0;
1268 greg 1.46 sout.outpipe = 0;
1269     sout.xr = xres; sout.yr = yres;
1270 greg 1.45 sout.ofp = NULL;
1271     }
1272 greg 1.46 if (sout.ofp == NULL) { /* open output as input */
1273     sout.ofp = fopen(oname, fmode);
1274     if (sout.ofp == NULL) {
1275     if (j)
1276     break; /* assume end of modifier */
1277     sprintf(errmsg, "missing reload file '%s'",
1278     oname);
1279     error(WARNING, errmsg);
1280     break;
1281     }
1282     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1283     sprintf(errmsg, "format mismatch for '%s'",
1284     oname);
1285     error(USER, errmsg);
1286     }
1287     if ((sout.xr > 0) & (sout.yr > 0) &&
1288     (!fscnresolu(&xr, &yr, sout.ofp) ||
1289 greg 1.47 (xr != sout.xr) |
1290     (yr != sout.yr))) {
1291 greg 1.46 sprintf(errmsg, "resolution mismatch for '%s'",
1292     oname);
1293     error(USER, errmsg);
1294     }
1295 greg 1.45 }
1296 greg 1.46 /* read in RGB value */
1297     if (!get_contrib(rgbv, sout.ofp)) {
1298 greg 1.48 if (!j) {
1299     fclose(sout.ofp);
1300 greg 1.46 break; /* ignore empty file */
1301 greg 1.48 }
1302 greg 1.47 if (j < mp->nbins) {
1303 greg 1.46 sprintf(errmsg, "missing data in '%s'",
1304     oname);
1305     error(USER, errmsg);
1306     }
1307     break;
1308     }
1309     if (j >= mp->nbins) /* grow modifier size */
1310     ment->data = (char *)(mp = growmodifier(mp, j+1));
1311     copycolor(mp->cbin[j], rgbv);
1312 greg 1.48 if (oent->key == NULL) /* new file entry */
1313     oent->key = strcpy((char *)
1314     malloc(strlen(oname)+1), oname);
1315     if (oent->data == NULL)
1316     oent->data = (char *)malloc(sizeof(STREAMOUT));
1317     *(STREAMOUT *)oent->data = sout;
1318 greg 1.45 }
1319     }
1320 greg 1.46 lu_doall(&ofiletab, myclose, NULL); /* close all files */
1321     }
1322    
1323     /* seek on the given output file */
1324     static int
1325     myseeko(const LUENT *e, void *p)
1326     {
1327     STREAMOUT *sop = (STREAMOUT *)e->data;
1328     off_t nbytes = *(off_t *)p;
1329    
1330     if (sop->reclen > 1)
1331     nbytes = nbytes * sop->reclen;
1332     if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1333     sprintf(errmsg, "seek error on file '%s'", e->key);
1334     error(SYSTEM, errmsg);
1335     }
1336     return 0;
1337 greg 1.45 }
1338    
1339 greg 1.14 /* recover output if possible */
1340     void
1341     recover_output(FILE *fin)
1342     {
1343 greg 1.31 off_t lastout = -1;
1344     int outvsiz, recsiz;
1345     char *outvfmt;
1346     int i, j;
1347     MODCONT *mp;
1348     int ofl;
1349     char oname[1024];
1350     LUENT *ment, *oent;
1351     STREAMOUT sout;
1352     off_t nvals;
1353     int xr, yr;
1354 greg 1.14
1355     switch (outfmt) {
1356     case 'a':
1357     error(USER, "cannot recover ASCII output");
1358     return;
1359     case 'f':
1360     outvsiz = sizeof(float)*3;
1361     outvfmt = "float";
1362     break;
1363     case 'd':
1364     outvsiz = sizeof(double)*3;
1365     outvfmt = "double";
1366     break;
1367     case 'c':
1368     outvsiz = sizeof(COLR);
1369     outvfmt = COLRFMT;
1370     break;
1371     default:
1372     error(INTERNAL, "botched output format");
1373     return;
1374     }
1375     /* check modifier outputs */
1376     for (i = 0; i < nmods; i++) {
1377     ment = lu_find(&modconttab,modname[i]);
1378     mp = (MODCONT *)ment->data;
1379     if (mp->outspec == NULL)
1380     error(USER, "cannot recover from stdout");
1381 greg 1.31 if (mp->outspec[0] == '!')
1382     error(USER, "cannot recover from command");
1383 greg 1.14 for (j = 0; ; j++) { /* check each bin's file */
1384     ofl = ofname(oname, mp->outspec, mp->modname, j);
1385     if (ofl < 0)
1386     error(USER, "bad output file specification");
1387     oent = lu_find(&ofiletab, oname);
1388 greg 1.31 if (oent->data != NULL) {
1389     sout = *(STREAMOUT *)oent->data;
1390     } else {
1391 greg 1.45 sout.reclen = 0;
1392 greg 1.46 sout.outpipe = 0;
1393 greg 1.31 sout.ofp = NULL;
1394     }
1395     if (sout.ofp != NULL) { /* already open? */
1396 greg 1.14 if (ofl & OF_BIN)
1397     continue;
1398     break;
1399     }
1400     /* open output */
1401 greg 1.31 sout.ofp = fopen(oname, "rb+");
1402     if (sout.ofp == NULL) {
1403 greg 1.23 if (j)
1404     break; /* assume end of modifier */
1405     sprintf(errmsg, "missing recover file '%s'",
1406     oname);
1407 greg 1.45 error(WARNING, errmsg);
1408     break;
1409 greg 1.23 }
1410 greg 1.31 nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1411 greg 1.14 if (nvals <= 0) {
1412     lastout = 0; /* empty output, quit here */
1413 greg 1.31 fclose(sout.ofp);
1414 greg 1.14 break;
1415     }
1416 greg 1.45 if (!sout.reclen) {
1417 greg 1.31 if (!(ofl & OF_BIN)) {
1418 greg 1.14 sprintf(errmsg,
1419 greg 1.32 "need -bn to recover file '%s'",
1420 greg 1.14 oname);
1421 greg 1.32 error(USER, errmsg);
1422 greg 1.14 }
1423 greg 1.31 recsiz = outvsiz;
1424     } else
1425     recsiz = outvsiz * sout.reclen;
1426    
1427     lseek(fileno(sout.ofp), 0, SEEK_SET);
1428     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1429     sprintf(errmsg, "format mismatch for '%s'",
1430     oname);
1431     error(USER, errmsg);
1432     }
1433 greg 1.48 sout.xr = xres; sout.yr = yres;
1434     if ((sout.xr > 0) & (sout.yr > 0) &&
1435 greg 1.31 (!fscnresolu(&xr, &yr, sout.ofp) ||
1436 greg 1.48 (xr != sout.xr) |
1437     (yr != sout.yr))) {
1438 greg 1.31 sprintf(errmsg, "resolution mismatch for '%s'",
1439     oname);
1440     error(USER, errmsg);
1441 greg 1.14 }
1442 greg 1.31 nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1443     if ((lastout < 0) | (nvals < lastout))
1444 greg 1.14 lastout = nvals;
1445 greg 1.31 if (oent->key == NULL) /* new entry */
1446 greg 1.14 oent->key = strcpy((char *)
1447     malloc(strlen(oname)+1), oname);
1448 greg 1.31 if (oent->data == NULL)
1449     oent->data = (char *)malloc(sizeof(STREAMOUT));
1450     *(STREAMOUT *)oent->data = sout;
1451 greg 1.14 if (!(ofl & OF_BIN))
1452     break; /* no bin separation */
1453     }
1454     if (!lastout) { /* empty output */
1455 greg 1.16 error(WARNING, "no previous data to recover");
1456 greg 1.14 lu_done(&ofiletab); /* reclose all outputs */
1457     return;
1458     }
1459 greg 1.31 if (j > mp->nbins) /* reallocate modifier bins */
1460     ment->data = (char *)(mp = growmodifier(mp, j));
1461 greg 1.14 }
1462 greg 1.15 if (lastout < 0) {
1463 greg 1.16 error(WARNING, "no output files to recover");
1464 greg 1.15 return;
1465     }
1466 greg 1.24 if (raysleft && lastout >= raysleft) {
1467     error(WARNING, "output appears to be complete");
1468     /* XXX should read & discard input? */
1469     quit(0);
1470     }
1471 greg 1.14 /* seek on all files */
1472     nvals = lastout * outvsiz;
1473     lu_doall(&ofiletab, myseeko, &nvals);
1474 greg 1.28 /* skip repeated input */
1475 greg 1.14 for (nvals = 0; nvals < lastout; nvals++)
1476 greg 1.36 if (getinp(oname, fin) < 0)
1477 greg 1.14 error(USER, "unexpected EOF on input");
1478     lastray = lastdone = (unsigned long)lastout;
1479     if (raysleft)
1480     raysleft -= lastray;
1481 greg 1.1 }