ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/util/rtcontrib.c
Revision: 1.50
Committed: Thu May 1 16:42:06 2008 UTC (16 years ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.49: +3 -2 lines
Log Message: 
Math library and warning fixes for Solaris

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.50 static const char RCSid[] = "$Id: rtcontrib.c,v 1.49 2008/04/18 18:06:29 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 1.35 int force_open = 0; /* truncate existing output? */
135 greg 1.46 int recover = 0; /* recover previous output? */
136 greg 1.49 int accumulate = 1; /* input rays per output record */
137 greg 1.1 int xres = 0; /* horiz. output resolution */
138     int yres = 0; /* vert. output resolution */
139    
140 greg 1.49 int account; /* current accumulation count */
141 greg 1.14 unsigned long raysleft; /* number of rays left to trace */
142 greg 1.1 long waitflush; /* how long until next flush */
143    
144     unsigned long lastray = 0; /* last ray number sent */
145     unsigned long lastdone = 0; /* last ray processed */
146    
147 greg 1.2 int using_stdout = 0; /* are we using stdout? */
148    
149 greg 1.1 const char *modname[MAXMODLIST]; /* ordered modifier name list */
150     int nmods = 0; /* number of modifiers */
151    
152 greg 1.29 #define queue_length() (lastray - lastdone)
153    
154 greg 1.31 MODCONT *growmodifier(MODCONT *mp, int nb);
155     MODCONT *addmodifier(char *modn, char *outf, char *binv, int bincnt);
156     void addmodfile(char *fname, char *outf, char *binv, int bincnt);
157 greg 1.1
158 greg 1.5 void init(int np);
159 greg 1.1 int done_rprocs(struct rtproc *rtp);
160 greg 1.45 void reload_output(void);
161 greg 1.14 void recover_output(FILE *fin);
162     void trace_contribs(FILE *fin);
163 greg 1.1 struct rtproc *wait_rproc(void);
164     struct rtproc *get_rproc(void);
165 greg 1.3 void queue_raytree(struct rtproc *rtp);
166     void process_queue(void);
167 greg 1.1
168 greg 1.14 void put_contrib(const DCOLOR cnt, FILE *fout);
169 greg 1.2 void add_contrib(const char *modn);
170 greg 1.49 void done_contrib(int navg);
171 greg 1.1
172 greg 1.29 /* return number of open rtrace processes */
173     static int
174     nrtprocs(void)
175     {
176     int nrtp = 0;
177     struct rtproc *rtp;
178    
179     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
180     nrtp += rtp->pd.running;
181     return(nrtp);
182     }
183    
184 greg 1.1 /* set input/output format */
185     static void
186     setformat(const char *fmt)
187     {
188     switch (fmt[0]) {
189     case 'f':
190     case 'd':
191 greg 1.10 SET_FILE_BINARY(stdin);
192     /* fall through */
193     case 'a':
194 greg 1.1 inpfmt = fmt[0];
195     break;
196     default:
197     goto fmterr;
198     }
199     switch (fmt[1]) {
200     case '\0':
201     outfmt = inpfmt;
202     return;
203     case 'a':
204     case 'f':
205     case 'd':
206     case 'c':
207     outfmt = fmt[1];
208     break;
209     default:
210     goto fmterr;
211     }
212     if (!fmt[2])
213     return;
214     fmterr:
215     sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
216     error(USER, errmsg);
217     }
218    
219     /* gather rays from rtrace and output contributions */
220     int
221     main(int argc, char *argv[])
222     {
223 greg 1.40 int contrib = 0;
224 greg 1.1 int nprocs = 1;
225     char *curout = NULL;
226     char *binval = NULL;
227 greg 1.31 int bincnt = 0;
228 greg 1.5 char fmt[8];
229 greg 1.2 int i, j;
230 greg 1.25 /* need at least one argument */
231     if (argc < 2) {
232     fprintf(stderr,
233 greg 1.40 "Usage: %s [-n nprocs][-V][-r][-e expr][-f source][-o ospec][-b binv] {-m mod | -M file} [rtrace options] octree\n",
234 greg 1.25 argv[0]);
235     exit(1);
236     }
237 greg 1.2 /* global program name */
238 greg 1.1 gargv = argv;
239 greg 1.11 /* initialize calcomp routines */
240 greg 1.1 esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
241     esupport &= ~(E_OUTCHAN);
242 greg 1.11 varset("PI", ':', PI);
243 greg 1.1 /* get our options */
244 greg 1.2 for (i = 1; i < argc-1; i++) {
245     /* expand arguments */
246     while ((j = expandarg(&argc, &argv, i)) > 0)
247     ;
248     if (j < 0) {
249     fprintf(stderr, "%s: cannot expand '%s'",
250     argv[0], argv[i]);
251     exit(1);
252     }
253     if (argv[i][0] == '-')
254     switch (argv[i][1]) {
255     case 'n': /* number of processes */
256 greg 1.21 if (argv[i][2] || i >= argc-2) break;
257 greg 1.2 nprocs = atoi(argv[++i]);
258     if (nprocs <= 0)
259     error(USER, "illegal number of processes");
260     continue;
261 greg 1.40 case 'V': /* output contributions */
262     switch (argv[i][2]) {
263     case '\0':
264     contrib = !contrib;
265     continue;
266     case '+': case '1':
267     case 'T': case 't':
268     case 'Y': case 'y':
269     contrib = 1;
270     continue;
271     case '-': case '0':
272     case 'F': case 'f':
273     case 'N': case 'n':
274     contrib = 0;
275     continue;
276     }
277     break;
278 greg 1.49 case 'c': /* input rays per output */
279     if (argv[i][2] || i >= argc-2) break;
280     accumulate = atoi(argv[++i]);
281     continue;
282 greg 1.40 case 'r': /* recover output */
283     if (argv[i][2]) break;
284 greg 1.46 recover = 1;
285 greg 1.40 continue;
286 greg 1.2 case 'h': /* output header? */
287     switch (argv[i][2]) {
288     case '\0':
289     header = !header;
290     continue;
291 greg 1.3 case '+': case '1':
292     case 'T': case 't':
293     case 'Y': case 'y':
294 greg 1.2 header = 1;
295     continue;
296 greg 1.3 case '-': case '0':
297     case 'F': case 'f':
298     case 'N': case 'n':
299 greg 1.2 header = 0;
300     continue;
301     }
302     break;
303 greg 1.35 case 'f': /* file or force or format */
304 greg 1.2 if (!argv[i][2]) {
305 greg 1.9 char *fpath;
306 greg 1.21 if (i >= argc-2) break;
307 greg 1.9 fpath = getpath(argv[++i],
308     getrlibpath(), R_OK);
309     if (fpath == NULL) {
310     sprintf(errmsg,
311     "cannot find file '%s'",
312     argv[i]);
313     error(USER, errmsg);
314     }
315     fcompile(fpath);
316 greg 1.2 continue;
317     }
318 greg 1.35 if (argv[i][2] == 'o') {
319 greg 1.46 force_open = 1;
320 greg 1.35 continue;
321     }
322 greg 1.2 setformat(argv[i]+2);
323     continue;
324     case 'e': /* expression */
325 greg 1.21 if (argv[i][2] || i >= argc-2) break;
326 greg 1.2 scompile(argv[++i], NULL, 0);
327 greg 1.1 continue;
328 greg 1.2 case 'o': /* output file spec. */
329 greg 1.21 if (argv[i][2] || i >= argc-2) break;
330 greg 1.2 curout = argv[++i];
331 greg 1.1 continue;
332 greg 1.2 case 'x': /* horiz. output resolution */
333 greg 1.21 if (argv[i][2] || i >= argc-2) break;
334 greg 1.2 xres = atoi(argv[++i]);
335 greg 1.1 continue;
336 greg 1.2 case 'y': /* vert. output resolution */
337 greg 1.21 if (argv[i][2] || i >= argc-2) break;
338 greg 1.2 yres = atoi(argv[++i]);
339     continue;
340 greg 1.31 case 'b': /* bin expression/count */
341     if (i >= argc-2) break;
342     if (argv[i][2] == 'n') {
343     bincnt = atoi(argv[++i]);
344     continue;
345     }
346     if (argv[i][2]) break;
347 greg 1.2 binval = argv[++i];
348     continue;
349     case 'm': /* modifier name */
350 greg 1.21 if (argv[i][2] || i >= argc-2) break;
351 greg 1.2 rtargv[rtargc++] = "-ti";
352     rtargv[rtargc++] = argv[++i];
353 greg 1.31 addmodifier(argv[i], curout, binval, bincnt);
354 greg 1.1 continue;
355 greg 1.17 case 'M': /* modifier file */
356 greg 1.21 if (argv[i][2] || i >= argc-2) break;
357 greg 1.19 rtargv[rtargc++] = "-tI";
358     rtargv[rtargc++] = argv[++i];
359 greg 1.31 addmodfile(argv[i], curout, binval, bincnt);
360 greg 1.17 continue;
361 greg 1.39 case 'P': /* persist file */
362 greg 1.44 if (i >= argc-2) break;
363     persist_state = (argv[i][2] == 'P') ?
364     PERSIST_PARALL : PERSIST_SINGLE;
365     rtargv[rtargc++] = argv[i];
366     rtargv[rtargc++] = argv[++i];
367     continue;
368 greg 1.1 }
369 greg 1.2 rtargv[rtargc++] = argv[i]; /* assume rtrace option */
370 greg 1.1 }
371 greg 1.49 if (accumulate <= 0) /* no output flushing for single record */
372 greg 1.45 xres = yres = 0;
373 greg 1.2 /* set global argument list */
374     gargc = argc; gargv = argv;
375 greg 1.1 /* add "mandatory" rtrace settings */
376 greg 1.2 for (j = 0; myrtopts[j] != NULL; j++)
377     rtargv[rtargc++] = myrtopts[j];
378 greg 1.40 rtargv[rtargc++] = contrib ? RTCONTRIB : RTCOEFF;
379 greg 1.2 /* just asking for defaults? */
380     if (!strcmp(argv[i], "-defaults")) {
381 greg 1.1 char sxres[16], syres[16];
382     char *rtpath;
383 greg 1.49 printf("-n %-2d\t\t\t\t# number of processes\n", nprocs);
384     printf("-c %-5d\t\t\t# accumulated rays per record\n",
385     accumulate);
386 greg 1.40 printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
387     contrib ? "contributions" : "coefficients");
388 greg 1.1 fflush(stdout); /* report OUR options */
389     rtargv[rtargc++] = header ? "-h+" : "-h-";
390     sprintf(fmt, "-f%c%c", inpfmt, outfmt);
391     rtargv[rtargc++] = fmt;
392     rtargv[rtargc++] = "-x";
393     sprintf(sxres, "%d", xres);
394     rtargv[rtargc++] = sxres;
395     rtargv[rtargc++] = "-y";
396     sprintf(syres, "%d", yres);
397     rtargv[rtargc++] = syres;
398     rtargv[rtargc++] = "-defaults";
399     rtargv[rtargc] = NULL;
400     rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
401     if (rtpath == NULL) {
402     eputs(rtargv[0]);
403     eputs(": command not found\n");
404     exit(1);
405     }
406     execv(rtpath, rtargv);
407     perror(rtpath); /* execv() should not return */
408     exit(1);
409 greg 1.5 }
410     if (nprocs > 1) { /* add persist file if parallel */
411 greg 1.44 if (persist_state == PERSIST_SINGLE)
412     error(USER, "use -PP option for multiple processes");
413     if (persist_state == PERSIST_NONE) {
414     rtargv[rtargc++] = "-PP";
415     rtargv[rtargc++] = mktemp(persistfn);
416     persist_state = PERSIST_OURS;
417     }
418 greg 1.2 }
419 greg 1.1 /* add format string */
420     sprintf(fmt, "-f%cf", inpfmt);
421     rtargv[rtargc++] = fmt;
422     /* octree argument is last */
423 greg 1.2 if (i <= 0 || i != argc-1 || argv[i][0] == '-')
424     error(USER, "missing octree argument");
425     rtargv[rtargc++] = octree = argv[i];
426 greg 1.1 rtargv[rtargc] = NULL;
427 greg 1.46 /* start rtrace & recover if requested */
428 greg 1.1 init(nprocs);
429 greg 1.46 /* compute contributions */
430     trace_contribs(stdin);
431     /* clean up */
432 greg 1.1 quit(0);
433     }
434    
435 schorsch 1.26 #ifndef SIGALRM
436     #define SIGALRM SIGTERM
437     #endif
438 greg 1.1 /* kill persistent rtrace process */
439     static void
440     killpersist(void)
441     {
442     FILE *fp = fopen(persistfn, "r");
443 schorsch 1.26 RT_PID pid;
444 greg 1.1
445     if (fp == NULL)
446     return;
447     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
448     unlink(persistfn);
449     fclose(fp);
450     }
451    
452     /* close rtrace processes and clean up */
453     int
454     done_rprocs(struct rtproc *rtp)
455     {
456     int st0, st1 = 0;
457    
458     if (rtp->next != NULL) { /* close last opened first! */
459     st1 = done_rprocs(rtp->next);
460     free((void *)rtp->next);
461     rtp->next = NULL;
462     }
463     st0 = close_process(&rtp->pd);
464     if (st0 < 0)
465     error(WARNING, "unknown return status from rtrace process");
466     else if (st0 > 0)
467     return(st0);
468     return(st1);
469     }
470    
471     /* exit with status */
472     void
473     quit(int status)
474     {
475     int rtstat;
476    
477 greg 1.45 if (persist_state == PERSIST_OURS) /* terminate waiting rtrace */
478 greg 1.1 killpersist();
479     /* clean up rtrace process(es) */
480     rtstat = done_rprocs(&rt0);
481     if (status == 0)
482     status = rtstat;
483     exit(status); /* flushes all output streams */
484     }
485    
486 greg 1.5 /* start rtrace processes and initialize */
487 greg 1.1 void
488     init(int np)
489     {
490     struct rtproc *rtp;
491     int i;
492     int maxbytes;
493 greg 1.2 /* make sure we have something to do */
494     if (!nmods)
495     error(USER, "No modifiers specified");
496 greg 1.1 /* assign ray variables */
497     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
498     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
499     /* set up signal handling */
500 greg 1.3 signal(SIGINT, quit);
501     #ifdef SIGHUP
502     signal(SIGHUP, quit);
503     #endif
504     #ifdef SIGTERM
505     signal(SIGTERM, quit);
506     #endif
507     #ifdef SIGPIPE
508 greg 1.1 signal(SIGPIPE, quit);
509     #endif
510     rtp = &rt0; /* start rtrace process(es) */
511     for (i = 0; i++ < np; ) {
512     errno = 0;
513     maxbytes = open_process(&rtp->pd, rtargv);
514     if (maxbytes == 0) {
515     eputs(rtargv[0]);
516     eputs(": command not found\n");
517     exit(1);
518     }
519     if (maxbytes < 0)
520     error(SYSTEM, "cannot start rtrace process");
521     if (maxbytes > treebufsiz)
522     treebufsiz = maxbytes;
523 greg 1.2 rtp->raynum = 0;
524 greg 1.1 rtp->bsiz = 0;
525     rtp->buf = NULL;
526 greg 1.2 rtp->nbr = 0;
527 greg 1.1 if (i == np) /* last process? */
528     break;
529     if (i == 1)
530     sleep(2); /* wait for persist file */
531     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
532     if (rtp->next == NULL)
533     error(SYSTEM, "out of memory in init");
534     rtp = rtp->next;
535     }
536     rtp->next = NULL; /* terminate list */
537     if (yres > 0) {
538     if (xres > 0)
539 greg 1.14 raysleft = (unsigned long)xres*yres;
540 greg 1.1 else
541     raysleft = yres;
542     } else
543     raysleft = 0;
544 greg 1.49 if ((account = accumulate) > 0)
545     raysleft *= accumulate;
546 greg 1.1 waitflush = xres;
547 greg 1.46 if (!recover)
548     return;
549     /* recover previous values */
550 greg 1.49 if (accumulate <= 0)
551 greg 1.46 reload_output();
552     else
553     recover_output(stdin);
554 greg 1.1 }
555    
556 greg 1.31 /* grow modifier to accommodate more bins */
557     MODCONT *
558     growmodifier(MODCONT *mp, int nb)
559     {
560     if (nb <= mp->nbins)
561     return mp;
562     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
563     if (mp == NULL)
564     error(SYSTEM, "out of memory in growmodifier");
565     memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
566     mp->nbins = nb;
567     return mp;
568     }
569    
570 greg 1.1 /* add modifier to our list to track */
571     MODCONT *
572 greg 1.31 addmodifier(char *modn, char *outf, char *binv, int bincnt)
573 greg 1.1 {
574     LUENT *lep = lu_find(&modconttab, modn);
575     MODCONT *mp;
576 greg 1.32 int i;
577 greg 1.1
578     if (lep->data != NULL) {
579     sprintf(errmsg, "duplicate modifier '%s'", modn);
580     error(USER, errmsg);
581     }
582     if (nmods >= MAXMODLIST)
583     error(USER, "too many modifiers");
584     modname[nmods++] = modn; /* XXX assumes static string */
585     lep->key = modn; /* XXX assumes static string */
586     mp = (MODCONT *)malloc(sizeof(MODCONT));
587     if (mp == NULL)
588     error(SYSTEM, "out of memory in addmodifier");
589     mp->outspec = outf; /* XXX assumes static string */
590     mp->modname = modn; /* XXX assumes static string */
591     if (binv != NULL)
592     mp->binv = eparse(binv);
593     else
594     mp->binv = eparse("0");
595     mp->nbins = 1;
596     setcolor(mp->cbin[0], 0., 0., 0.);
597 greg 1.31 if (mp->binv->type == NUM) /* assume one bin if constant */
598     bincnt = 1;
599     else if (bincnt > 1)
600     mp = growmodifier(mp, bincnt);
601 greg 1.32 lep->data = (char *)mp;
602     /* allocate output streams */
603 greg 1.45 for (i = bincnt; i-- > 0; )
604 greg 1.32 getostream(mp->outspec, mp->modname, i, 1);
605 greg 1.1 return mp;
606     }
607    
608 greg 1.17 /* add modifiers from a file list */
609     void
610 greg 1.31 addmodfile(char *fname, char *outf, char *binv, int bincnt)
611 greg 1.17 {
612     char *mname[MAXMODLIST];
613     int i;
614 greg 1.20 /* find the file & store strings */
615     if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) {
616     sprintf(errmsg, "cannot find modifier file '%s'", fname);
617     error(SYSTEM, errmsg);
618     }
619 greg 1.17 for (i = 0; mname[i]; i++) /* add each one */
620 greg 1.31 addmodifier(mname[i], outf, binv, bincnt);
621 greg 1.17 }
622    
623 greg 1.1 /* put string to stderr */
624     void
625     eputs(char *s)
626     {
627     static int midline = 0;
628    
629     if (!*s) return;
630     if (!midline) {
631     fputs(progname, stderr);
632     fputs(": ", stderr);
633     }
634     fputs(s, stderr);
635     midline = s[strlen(s)-1] != '\n';
636     }
637    
638 greg 1.14 /* construct output file name and return flags whether modifier/bin present */
639     int
640     ofname(char *oname, const char *ospec, const char *mname, int bn)
641     {
642     const char *mnp = NULL;
643     const char *bnp = NULL;
644     const char *cp;
645    
646     if (ospec == NULL)
647     return -1;
648     for (cp = ospec; *cp; cp++) /* check format position(s) */
649     if (*cp == '%') {
650     do
651     ++cp;
652     while (isdigit(*cp));
653     switch (*cp) {
654     case '%':
655     break;
656     case 's':
657     if (mnp != NULL)
658     return -1;
659     mnp = cp;
660     break;
661     case 'd':
662     if (bnp != NULL)
663     return -1;
664     bnp = cp;
665     break;
666     default:
667     return -1;
668     }
669     }
670     if (mnp != NULL) { /* create file name */
671     if (bnp != NULL) {
672     if (bnp > mnp)
673     sprintf(oname, ospec, mname, bn);
674     else
675     sprintf(oname, ospec, bn, mname);
676     return OF_MODIFIER|OF_BIN;
677     }
678     sprintf(oname, ospec, mname);
679     return OF_MODIFIER;
680     }
681     if (bnp != NULL) {
682     sprintf(oname, ospec, bn);
683     return OF_BIN;
684     }
685     strcpy(oname, ospec);
686     return 0;
687     }
688    
689 greg 1.1 /* write header to the given output stream */
690     void
691 greg 1.14 printheader(FILE *fout, const char *info)
692 greg 1.1 {
693     extern char VersionID[];
694     FILE *fin = fopen(octree, "r");
695    
696     if (fin == NULL)
697     quit(1);
698 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
699 greg 1.1 fclose(fin);
700     printargs(gargc-1, gargv, fout); /* add our command */
701     fprintf(fout, "SOFTWARE= %s\n", VersionID);
702     fputnow(fout);
703 greg 1.14 if (info != NULL) /* add extra info if given */
704     fputs(info, fout);
705 greg 1.1 switch (outfmt) { /* add output format */
706     case 'a':
707     fputformat("ascii", fout);
708     break;
709     case 'f':
710     fputformat("float", fout);
711     break;
712     case 'd':
713     fputformat("double", fout);
714     break;
715     case 'c':
716     fputformat(COLRFMT, fout);
717     break;
718     }
719     fputc('\n', fout);
720 greg 1.30 }
721    
722     /* write resolution string to given output stream */
723     void
724 greg 1.45 printresolu(FILE *fout, int xr, int yr)
725 greg 1.30 {
726 greg 1.45 if ((xr > 0) & (yr > 0)) /* resolution string */
727     fprtresolu(xr, yr, fout);
728     if (xres > 0) /* global flush flag */
729 greg 1.1 fflush(fout);
730     }
731    
732 greg 1.32 /* Get output stream pointer (open and write header if new and noopen==0) */
733 greg 1.31 STREAMOUT *
734 greg 1.32 getostream(const char *ospec, const char *mname, int bn, int noopen)
735 greg 1.31 {
736 greg 1.45 static const DCOLOR nocontrib = BLKCOLOR;
737 greg 1.31 static STREAMOUT stdos;
738     int ofl;
739     char oname[1024];
740     LUENT *lep;
741     STREAMOUT *sop;
742 greg 1.1
743     if (ospec == NULL) { /* use stdout? */
744 greg 1.32 if (!noopen && !using_stdout) {
745 greg 1.10 if (outfmt != 'a')
746     SET_FILE_BINARY(stdout);
747     if (header)
748 greg 1.14 printheader(stdout, NULL);
749 greg 1.45 printresolu(stdout, xres, yres);
750     stdos.xr = xres; stdos.yr = yres;
751 greg 1.31 using_stdout = 1;
752 greg 1.10 }
753 greg 1.31 stdos.ofp = stdout;
754 greg 1.32 stdos.reclen += noopen;
755 greg 1.31 return &stdos;
756 greg 1.1 }
757 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
758     if (ofl < 0) {
759     sprintf(errmsg, "bad output format '%s'", ospec);
760     error(USER, errmsg);
761     }
762     lep = lu_find(&ofiletab, oname); /* look it up */
763 greg 1.1 if (lep->key == NULL) /* new entry */
764 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
765 greg 1.31 sop = (STREAMOUT *)lep->data;
766     if (sop == NULL) { /* allocate stream */
767     sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
768     if (sop == NULL)
769     error(SYSTEM, "out of memory in getostream");
770 greg 1.45 sop->outpipe = oname[0] == '!';
771     sop->reclen = 0;
772 greg 1.32 sop->ofp = NULL; /* open iff noopen==0 */
773 greg 1.45 sop->xr = xres; sop->yr = yres;
774 greg 1.31 lep->data = (char *)sop;
775 greg 1.46 if (!sop->outpipe & !force_open & !recover &&
776     access(oname, F_OK) == 0) {
777 greg 1.45 errno = EEXIST; /* file exists */
778     goto openerr;
779     }
780 greg 1.31 }
781 greg 1.32 if (!noopen && sop->ofp == NULL) { /* open output stream */
782 greg 1.34 long i;
783 greg 1.14 if (oname[0] == '!') /* output to command */
784 greg 1.31 sop->ofp = popen(oname+1, "w");
785 greg 1.45 else /* else open file */
786 greg 1.31 sop->ofp = fopen(oname, "w");
787 greg 1.45 if (sop->ofp == NULL)
788     goto openerr;
789 greg 1.10 if (outfmt != 'a')
790 greg 1.31 SET_FILE_BINARY(sop->ofp);
791 greg 1.14 if (header) {
792     char info[512];
793     char *cp = info;
794 greg 1.32 if (ofl & OF_MODIFIER || sop->reclen == 1) {
795 greg 1.30 sprintf(cp, "MODIFIER=%s\n", mname);
796     while (*cp) ++cp;
797     }
798 greg 1.14 if (ofl & OF_BIN) {
799     sprintf(cp, "BIN=%d\n", bn);
800     while (*cp) ++cp;
801     }
802     *cp = '\0';
803 greg 1.31 printheader(sop->ofp, info);
804 greg 1.14 }
805 greg 1.49 if (accumulate > 0) { /* global resolution */
806 greg 1.47 sop->xr = xres; sop->yr = yres;
807     }
808 greg 1.45 printresolu(sop->ofp, sop->xr, sop->yr);
809 greg 1.2 /* play catch-up */
810 greg 1.49 for (i = accumulate > 0 ? lastdone/accumulate : 0; i--; ) {
811 greg 1.45 int j = sop->reclen;
812     if (j <= 0) j = 1;
813     while (j--)
814     put_contrib(nocontrib, sop->ofp);
815 greg 1.2 if (outfmt == 'a')
816 greg 1.31 putc('\n', sop->ofp);
817 greg 1.2 }
818     if (xres > 0)
819 greg 1.31 fflush(sop->ofp);
820 greg 1.1 }
821 greg 1.45 sop->reclen += noopen; /* add to length if noopen */
822     return sop; /* return output stream */
823     openerr:
824     sprintf(errmsg, "cannot open '%s' for writing", oname);
825     error(SYSTEM, errmsg);
826     return NULL; /* pro forma return */
827 greg 1.1 }
828    
829     /* read input ray into buffer */
830     int
831     getinp(char *buf, FILE *fp)
832     {
833 greg 1.45 double dv[3], *dvp;
834     float *fvp;
835 greg 1.4 char *cp;
836     int i;
837    
838 greg 1.1 switch (inpfmt) {
839     case 'a':
840 greg 1.4 cp = buf; /* make sure we get 6 floats */
841     for (i = 0; i < 6; i++) {
842     if (fgetword(cp, buf+127-cp, fp) == NULL)
843 greg 1.36 return -1;
844     if (i >= 3)
845     dv[i-3] = atof(cp);
846 greg 1.4 if ((cp = fskip(cp)) == NULL || *cp)
847 greg 1.36 return -1;
848 greg 1.4 *cp++ = ' ';
849     }
850     getc(fp); /* get/put eol */
851     *cp-- = '\0'; *cp = '\n';
852 greg 1.36 if (DOT(dv,dv) <= FTINY*FTINY)
853     return 0; /* dummy ray */
854 greg 1.1 return strlen(buf);
855     case 'f':
856     if (fread(buf, sizeof(float), 6, fp) < 6)
857 greg 1.36 return -1;
858 greg 1.45 fvp = (float *)buf + 3;
859     if (DOT(fvp,fvp) <= FTINY*FTINY)
860 greg 1.36 return 0; /* dummy ray */
861 greg 1.1 return sizeof(float)*6;
862     case 'd':
863     if (fread(buf, sizeof(double), 6, fp) < 6)
864 greg 1.36 return -1;
865 greg 1.45 dvp = (double *)buf + 3;
866     if (DOT(dvp,dvp) <= FTINY*FTINY)
867 greg 1.36 return 0; /* dummy ray */
868 greg 1.1 return sizeof(double)*6;
869     }
870     error(INTERNAL, "botched input format");
871 greg 1.36 return -1; /* pro forma return */
872 greg 1.1 }
873    
874 greg 1.2 static float rparams[9]; /* traced ray parameters */
875 greg 1.1
876     /* return channel (ray) value */
877     double
878     chanvalue(int n)
879     {
880     if (--n < 0 || n >= 6)
881     error(USER, "illegal channel number ($N)");
882 greg 1.2 return rparams[n+3];
883 greg 1.1 }
884    
885 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
886 greg 1.1 void
887 greg 1.2 add_contrib(const char *modn)
888 greg 1.1 {
889     LUENT *le = lu_find(&modconttab, modn);
890     MODCONT *mp = (MODCONT *)le->data;
891     int bn;
892    
893     if (mp == NULL) {
894     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
895     error(USER, errmsg);
896     }
897 greg 1.2 eclock++; /* get bin number */
898 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
899     if (bn <= 0)
900     bn = 0;
901 greg 1.31 else if (bn >= mp->nbins) /* new bin */
902     le->data = (char *)(mp = growmodifier(mp, bn+1));
903 greg 1.2 addcolor(mp->cbin[bn], rparams);
904 greg 1.1 }
905    
906     /* output newline to ASCII file and/or flush as requested */
907     static int
908     puteol(const LUENT *e, void *p)
909     {
910 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
911 greg 1.1
912     if (outfmt == 'a')
913 greg 1.31 putc('\n', sop->ofp);
914 greg 1.1 if (!waitflush)
915 greg 1.31 fflush(sop->ofp);
916     if (ferror(sop->ofp)) {
917 greg 1.1 sprintf(errmsg, "write error on file '%s'", e->key);
918     error(SYSTEM, errmsg);
919     }
920     return 0;
921     }
922    
923 greg 1.2 /* put out ray contribution to file */
924     void
925 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
926 greg 1.2 {
927     float fv[3];
928     COLR cv;
929    
930     switch (outfmt) {
931     case 'a':
932     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
933     break;
934     case 'f':
935 greg 1.46 copycolor(fv, cnt);
936 greg 1.2 fwrite(fv, sizeof(float), 3, fout);
937     break;
938     case 'd':
939     fwrite(cnt, sizeof(double), 3, fout);
940     break;
941     case 'c':
942     setcolr(cv, cnt[0], cnt[1], cnt[2]);
943     fwrite(cv, sizeof(cv), 1, fout);
944     break;
945     default:
946     error(INTERNAL, "botched output format");
947     }
948     }
949    
950 greg 1.45 /* output ray tallies and clear for next accumulation */
951 greg 1.1 void
952 greg 1.49 done_contrib(int navg)
953 greg 1.1 {
954 greg 1.49 double sf = 1.;
955 greg 1.31 int i, j;
956     MODCONT *mp;
957     STREAMOUT *sop;
958 greg 1.49 /* set average scaling */
959     if (navg > 1)
960     sf = 1. / (double)navg;
961 greg 1.1 /* output modifiers in order */
962     for (i = 0; i < nmods; i++) {
963     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
964 greg 1.49 if (navg > 1) /* average scaling */
965     for (j = mp->nbins; j--; )
966     scalecolor(mp->cbin[j], sf);
967 greg 1.31 sop = getostream(mp->outspec, mp->modname, 0,0);
968     put_contrib(mp->cbin[0], sop->ofp);
969 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
970 greg 1.31 sop == getostream(mp->outspec, mp->modname, 1,0))
971 greg 1.12 for (j = 1; j < mp->nbins; j++)
972 greg 1.31 put_contrib(mp->cbin[j], sop->ofp);
973 greg 1.12 else
974     for (j = 1; j < mp->nbins; j++)
975 greg 1.14 put_contrib(mp->cbin[j],
976 greg 1.31 getostream(mp->outspec,mp->modname,j,0)->ofp);
977 greg 1.45 /* clear for next time */
978 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
979 greg 1.1 }
980     --waitflush; /* terminate records */
981     lu_doall(&ofiletab, puteol, NULL);
982 greg 1.2 if (using_stdout & (outfmt == 'a'))
983     putc('\n', stdout);
984     if (!waitflush) {
985 greg 1.1 waitflush = xres;
986 greg 1.2 if (using_stdout)
987     fflush(stdout);
988     }
989 greg 1.1 }
990    
991 greg 1.3 /* queue completed ray tree produced by rtrace process */
992     void
993     queue_raytree(struct rtproc *rtp)
994     {
995     struct rtproc *rtu, *rtl = NULL;
996     /* insert following ray order */
997     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
998     if (rtp->raynum < rtu->raynum)
999     break;
1000     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
1001     if (rtu == NULL)
1002     error(SYSTEM, "out of memory in queue_raytree");
1003     *rtu = *rtp;
1004     if (rtl == NULL) {
1005     rtu->next = rt_unproc;
1006     rt_unproc = rtu;
1007     } else {
1008     rtu->next = rtl->next;
1009     rtl->next = rtu;
1010     }
1011     rtp->raynum = 0; /* clear path for next ray tree */
1012     rtp->bsiz = 0;
1013     rtp->buf = NULL;
1014     rtp->nbr = 0;
1015     }
1016    
1017     /* process completed ray trees from our queue */
1018 greg 1.1 void
1019 greg 1.3 process_queue(void)
1020 greg 1.1 {
1021 greg 1.3 char modname[128];
1022     /* ray-ordered queue */
1023     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
1024     struct rtproc *rtp = rt_unproc;
1025 greg 1.2 int n = rtp->nbr;
1026 greg 1.1 const char *cp = rtp->buf;
1027     while (n > 0) { /* process rays */
1028 greg 1.2 register char *mnp = modname;
1029 greg 1.1 /* skip leading tabs */
1030     while (n > 0 && *cp == '\t') {
1031     cp++; n--;
1032     }
1033 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
1034     error(USER, "bad modifier name from rtrace");
1035     /* get modifier name */
1036 greg 1.40 while (n > 1 && *cp != '\t') {
1037     if (mnp - modname >= sizeof(modname)-2)
1038     error(INTERNAL, "modifier name too long");
1039 greg 1.1 *mnp++ = *cp++; n--;
1040     }
1041     *mnp = '\0';
1042 greg 1.2 cp++; n--; /* eat following tab */
1043 greg 1.1 if (n < (int)(sizeof(float)*9))
1044     error(USER, "incomplete ray value from rtrace");
1045     /* add ray contribution */
1046 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
1047 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
1048 greg 1.2 add_contrib(modname);
1049 greg 1.1 }
1050 greg 1.49 /* time to produce record? */
1051     if (account > 0 && !--account)
1052     done_contrib(account = accumulate);
1053 greg 1.1 lastdone = rtp->raynum;
1054 greg 1.36 if (rtp->buf != NULL) /* free up buffer space */
1055     free(rtp->buf);
1056 greg 1.3 rt_unproc = rtp->next;
1057     free(rtp); /* done with this ray tree */
1058 greg 1.1 }
1059     }
1060    
1061     /* wait for rtrace process to finish with ray tree */
1062     struct rtproc *
1063     wait_rproc(void)
1064     {
1065     struct rtproc *rtfree = NULL;
1066     fd_set readset, errset;
1067     int nr;
1068     struct rtproc *rt;
1069     int n;
1070    
1071     do {
1072     nr = 0; /* prepare select call */
1073     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
1074     for (rt = &rt0; rt != NULL; rt = rt->next) {
1075     if (rt->raynum) {
1076     FD_SET(rt->pd.r, &readset);
1077     ++nr;
1078     }
1079     FD_SET(rt->pd.r, &errset);
1080     if (rt->pd.r >= n)
1081     n = rt->pd.r + 1;
1082     }
1083     if (!nr) /* no rays pending */
1084     break;
1085     if (nr > 1) { /* call select for multiple proc's */
1086     errno = 0;
1087     if (select(n, &readset, NULL, &errset, NULL) < 0)
1088     error(SYSTEM, "select call error in wait_rproc()");
1089     } else
1090     FD_ZERO(&errset);
1091     nr = 0;
1092     for (rt = &rt0; rt != NULL; rt = rt->next) {
1093     if (!FD_ISSET(rt->pd.r, &readset) &&
1094     !FD_ISSET(rt->pd.r, &errset))
1095     continue;
1096     if (rt->buf == NULL) {
1097     rt->bsiz = treebufsiz;
1098     rt->buf = (char *)malloc(treebufsiz);
1099 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
1100 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
1101     rt->bsiz = treebufsiz;
1102     else
1103 greg 1.28 treebufsiz = rt->bsiz += BUFSIZ;
1104 greg 1.1 rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1105     }
1106     if (rt->buf == NULL)
1107     error(SYSTEM, "out of memory in wait_rproc");
1108 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1109     if (nr <= 0)
1110 greg 1.1 error(USER, "rtrace process died");
1111 greg 1.2 rt->nbr += nr; /* advance & check */
1112     if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
1113     "~\t~\t", 4)) {
1114     rt->nbr -= 4; /* elide terminator */
1115 greg 1.3 queue_raytree(rt);
1116 greg 1.1 rtfree = rt; /* ready for next ray */
1117     }
1118     }
1119     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
1120     return rtfree;
1121     }
1122    
1123     /* return next available rtrace process */
1124     struct rtproc *
1125     get_rproc(void)
1126     {
1127     struct rtproc *rtp;
1128     /* check for idle rtrace */
1129     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
1130     if (!rtp->raynum)
1131     return rtp;
1132     return wait_rproc(); /* need to wait for one */
1133     }
1134    
1135     /* trace ray contributions (main loop) */
1136     void
1137 greg 1.5 trace_contribs(FILE *fin)
1138 greg 1.1 {
1139 greg 1.49 static int ignore_warning_given = 0;
1140 greg 1.1 char inpbuf[128];
1141     int iblen;
1142     struct rtproc *rtp;
1143     /* loop over input */
1144 greg 1.36 while ((iblen = getinp(inpbuf, fin)) >= 0) {
1145 greg 1.49 if (!iblen && accumulate != 1) {
1146     if (!ignore_warning_given++)
1147     error(WARNING,
1148     "dummy ray(s) ignored during accumulation\n");
1149     continue;
1150     }
1151 greg 1.36 if (!iblen || /* need reset? */
1152     queue_length() > 10*nrtprocs() ||
1153     lastray+1 < lastray) {
1154 greg 1.1 while (wait_rproc() != NULL)
1155 greg 1.3 process_queue();
1156 greg 1.34 if (lastray+1 < lastray)
1157     lastdone = lastray = 0;
1158 greg 1.1 }
1159     rtp = get_rproc(); /* get avail. rtrace process */
1160 greg 1.36 rtp->raynum = ++lastray; /* assign ray */
1161     if (iblen) { /* trace ray if valid */
1162     writebuf(rtp->pd.w, inpbuf, iblen);
1163     } else { /* else bypass dummy ray */
1164     queue_raytree(rtp); /* empty tree */
1165 greg 1.38 if ((yres <= 0) | (waitflush > 1))
1166 greg 1.36 waitflush = 1; /* flush after this */
1167     }
1168 greg 1.38 process_queue(); /* catch up with results */
1169 greg 1.14 if (raysleft && !--raysleft)
1170 greg 1.38 break; /* preemptive EOI */
1171 greg 1.1 }
1172     while (wait_rproc() != NULL) /* process outstanding rays */
1173 greg 1.3 process_queue();
1174 greg 1.49 if (accumulate <= 0)
1175     done_contrib(0); /* output tallies */
1176     else if (account < accumulate) {
1177     error(WARNING, "partial accumulation in final record");
1178     done_contrib(accumulate - account);
1179     }
1180 greg 1.14 if (raysleft)
1181 greg 1.2 error(USER, "unexpected EOF on input");
1182 greg 1.14 lu_done(&ofiletab); /* close output files */
1183     }
1184    
1185 greg 1.46 /* get ray contribution from previous file */
1186     static int
1187     get_contrib(DCOLOR cnt, FILE *finp)
1188     {
1189     COLOR fv;
1190     COLR cv;
1191    
1192     switch (outfmt) {
1193     case 'a':
1194     return(fscanf(finp,"%lf %lf %lf",&cnt[0],&cnt[1],&cnt[2]) == 3);
1195     case 'f':
1196     if (fread(fv, sizeof(fv[0]), 3, finp) != 3)
1197     return(0);
1198     copycolor(cnt, fv);
1199     return(1);
1200     case 'd':
1201     return(fread(cnt, sizeof(cnt[0]), 3, finp) == 3);
1202     case 'c':
1203     if (fread(cv, sizeof(cv), 1, finp) != 1)
1204     return(0);
1205     colr_color(fv, cv);
1206     copycolor(cnt, fv);
1207     return(1);
1208     default:
1209     error(INTERNAL, "botched output format");
1210     }
1211     return(0); /* pro forma return */
1212     }
1213    
1214     /* close output file opened for input */
1215 greg 1.14 static int
1216 greg 1.46 myclose(const LUENT *e, void *p)
1217 greg 1.14 {
1218 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
1219    
1220 greg 1.46 if (sop->ofp == NULL)
1221 greg 1.50 return(0);
1222 greg 1.46 fclose(sop->ofp);
1223     sop->ofp = NULL;
1224 greg 1.50 return(0);
1225 greg 1.14 }
1226    
1227 greg 1.45 /* load previously accumulated values */
1228     void
1229     reload_output(void)
1230     {
1231     int i, j;
1232     MODCONT *mp;
1233     int ofl;
1234     char oname[1024];
1235     char *fmode = "rb";
1236     char *outvfmt;
1237     LUENT *ment, *oent;
1238 greg 1.46 int xr, yr;
1239 greg 1.45 STREAMOUT sout;
1240 greg 1.46 DCOLOR rgbv;
1241 greg 1.45
1242     switch (outfmt) {
1243     case 'a':
1244     outvfmt = "ascii";
1245     fmode = "r";
1246     break;
1247     case 'f':
1248     outvfmt = "float";
1249     break;
1250     case 'd':
1251     outvfmt = "double";
1252     break;
1253     case 'c':
1254     outvfmt = COLRFMT;
1255     break;
1256     default:
1257     error(INTERNAL, "botched output format");
1258     return;
1259     }
1260 greg 1.46 /* reload modifier values */
1261 greg 1.45 for (i = 0; i < nmods; i++) {
1262     ment = lu_find(&modconttab,modname[i]);
1263     mp = (MODCONT *)ment->data;
1264     if (mp->outspec == NULL)
1265     error(USER, "cannot reload from stdout");
1266     if (mp->outspec[0] == '!')
1267     error(USER, "cannot reload from command");
1268 greg 1.46 for (j = 0; ; j++) { /* load each modifier bin */
1269 greg 1.45 ofl = ofname(oname, mp->outspec, mp->modname, j);
1270     if (ofl < 0)
1271     error(USER, "bad output file specification");
1272     oent = lu_find(&ofiletab, oname);
1273     if (oent->data != NULL) {
1274     sout = *(STREAMOUT *)oent->data;
1275     } else {
1276     sout.reclen = 0;
1277 greg 1.46 sout.outpipe = 0;
1278     sout.xr = xres; sout.yr = yres;
1279 greg 1.45 sout.ofp = NULL;
1280     }
1281 greg 1.46 if (sout.ofp == NULL) { /* open output as input */
1282     sout.ofp = fopen(oname, fmode);
1283     if (sout.ofp == NULL) {
1284     if (j)
1285     break; /* assume end of modifier */
1286     sprintf(errmsg, "missing reload file '%s'",
1287     oname);
1288     error(WARNING, errmsg);
1289     break;
1290     }
1291     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1292     sprintf(errmsg, "format mismatch for '%s'",
1293     oname);
1294     error(USER, errmsg);
1295     }
1296     if ((sout.xr > 0) & (sout.yr > 0) &&
1297     (!fscnresolu(&xr, &yr, sout.ofp) ||
1298 greg 1.47 (xr != sout.xr) |
1299     (yr != sout.yr))) {
1300 greg 1.46 sprintf(errmsg, "resolution mismatch for '%s'",
1301     oname);
1302     error(USER, errmsg);
1303     }
1304 greg 1.45 }
1305 greg 1.46 /* read in RGB value */
1306     if (!get_contrib(rgbv, sout.ofp)) {
1307 greg 1.48 if (!j) {
1308     fclose(sout.ofp);
1309 greg 1.46 break; /* ignore empty file */
1310 greg 1.48 }
1311 greg 1.47 if (j < mp->nbins) {
1312 greg 1.46 sprintf(errmsg, "missing data in '%s'",
1313     oname);
1314     error(USER, errmsg);
1315     }
1316     break;
1317     }
1318     if (j >= mp->nbins) /* grow modifier size */
1319     ment->data = (char *)(mp = growmodifier(mp, j+1));
1320     copycolor(mp->cbin[j], rgbv);
1321 greg 1.48 if (oent->key == NULL) /* new file entry */
1322     oent->key = strcpy((char *)
1323     malloc(strlen(oname)+1), oname);
1324     if (oent->data == NULL)
1325     oent->data = (char *)malloc(sizeof(STREAMOUT));
1326     *(STREAMOUT *)oent->data = sout;
1327 greg 1.45 }
1328     }
1329 greg 1.46 lu_doall(&ofiletab, myclose, NULL); /* close all files */
1330     }
1331    
1332     /* seek on the given output file */
1333     static int
1334     myseeko(const LUENT *e, void *p)
1335     {
1336     STREAMOUT *sop = (STREAMOUT *)e->data;
1337     off_t nbytes = *(off_t *)p;
1338    
1339     if (sop->reclen > 1)
1340     nbytes = nbytes * sop->reclen;
1341     if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1342     sprintf(errmsg, "seek error on file '%s'", e->key);
1343     error(SYSTEM, errmsg);
1344     }
1345     return 0;
1346 greg 1.45 }
1347    
1348 greg 1.14 /* recover output if possible */
1349     void
1350     recover_output(FILE *fin)
1351     {
1352 greg 1.31 off_t lastout = -1;
1353     int outvsiz, recsiz;
1354     char *outvfmt;
1355     int i, j;
1356     MODCONT *mp;
1357     int ofl;
1358     char oname[1024];
1359     LUENT *ment, *oent;
1360     STREAMOUT sout;
1361     off_t nvals;
1362     int xr, yr;
1363 greg 1.14
1364     switch (outfmt) {
1365     case 'a':
1366     error(USER, "cannot recover ASCII output");
1367     return;
1368     case 'f':
1369     outvsiz = sizeof(float)*3;
1370     outvfmt = "float";
1371     break;
1372     case 'd':
1373     outvsiz = sizeof(double)*3;
1374     outvfmt = "double";
1375     break;
1376     case 'c':
1377     outvsiz = sizeof(COLR);
1378     outvfmt = COLRFMT;
1379     break;
1380     default:
1381     error(INTERNAL, "botched output format");
1382     return;
1383     }
1384     /* check modifier outputs */
1385     for (i = 0; i < nmods; i++) {
1386     ment = lu_find(&modconttab,modname[i]);
1387     mp = (MODCONT *)ment->data;
1388     if (mp->outspec == NULL)
1389     error(USER, "cannot recover from stdout");
1390 greg 1.31 if (mp->outspec[0] == '!')
1391     error(USER, "cannot recover from command");
1392 greg 1.14 for (j = 0; ; j++) { /* check each bin's file */
1393     ofl = ofname(oname, mp->outspec, mp->modname, j);
1394     if (ofl < 0)
1395     error(USER, "bad output file specification");
1396     oent = lu_find(&ofiletab, oname);
1397 greg 1.31 if (oent->data != NULL) {
1398     sout = *(STREAMOUT *)oent->data;
1399     } else {
1400 greg 1.45 sout.reclen = 0;
1401 greg 1.46 sout.outpipe = 0;
1402 greg 1.31 sout.ofp = NULL;
1403     }
1404     if (sout.ofp != NULL) { /* already open? */
1405 greg 1.14 if (ofl & OF_BIN)
1406     continue;
1407     break;
1408     }
1409     /* open output */
1410 greg 1.31 sout.ofp = fopen(oname, "rb+");
1411     if (sout.ofp == NULL) {
1412 greg 1.23 if (j)
1413     break; /* assume end of modifier */
1414     sprintf(errmsg, "missing recover file '%s'",
1415     oname);
1416 greg 1.45 error(WARNING, errmsg);
1417     break;
1418 greg 1.23 }
1419 greg 1.31 nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1420 greg 1.14 if (nvals <= 0) {
1421     lastout = 0; /* empty output, quit here */
1422 greg 1.31 fclose(sout.ofp);
1423 greg 1.14 break;
1424     }
1425 greg 1.45 if (!sout.reclen) {
1426 greg 1.31 if (!(ofl & OF_BIN)) {
1427 greg 1.14 sprintf(errmsg,
1428 greg 1.32 "need -bn to recover file '%s'",
1429 greg 1.14 oname);
1430 greg 1.32 error(USER, errmsg);
1431 greg 1.14 }
1432 greg 1.31 recsiz = outvsiz;
1433     } else
1434     recsiz = outvsiz * sout.reclen;
1435    
1436     lseek(fileno(sout.ofp), 0, SEEK_SET);
1437     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1438     sprintf(errmsg, "format mismatch for '%s'",
1439     oname);
1440     error(USER, errmsg);
1441     }
1442 greg 1.48 sout.xr = xres; sout.yr = yres;
1443     if ((sout.xr > 0) & (sout.yr > 0) &&
1444 greg 1.31 (!fscnresolu(&xr, &yr, sout.ofp) ||
1445 greg 1.48 (xr != sout.xr) |
1446     (yr != sout.yr))) {
1447 greg 1.31 sprintf(errmsg, "resolution mismatch for '%s'",
1448     oname);
1449     error(USER, errmsg);
1450 greg 1.14 }
1451 greg 1.31 nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1452     if ((lastout < 0) | (nvals < lastout))
1453 greg 1.14 lastout = nvals;
1454 greg 1.31 if (oent->key == NULL) /* new entry */
1455 greg 1.14 oent->key = strcpy((char *)
1456     malloc(strlen(oname)+1), oname);
1457 greg 1.31 if (oent->data == NULL)
1458     oent->data = (char *)malloc(sizeof(STREAMOUT));
1459     *(STREAMOUT *)oent->data = sout;
1460 greg 1.14 if (!(ofl & OF_BIN))
1461     break; /* no bin separation */
1462     }
1463     if (!lastout) { /* empty output */
1464 greg 1.16 error(WARNING, "no previous data to recover");
1465 greg 1.14 lu_done(&ofiletab); /* reclose all outputs */
1466     return;
1467     }
1468 greg 1.31 if (j > mp->nbins) /* reallocate modifier bins */
1469     ment->data = (char *)(mp = growmodifier(mp, j));
1470 greg 1.14 }
1471 greg 1.15 if (lastout < 0) {
1472 greg 1.16 error(WARNING, "no output files to recover");
1473 greg 1.15 return;
1474     }
1475 greg 1.49 if (raysleft && lastout >= raysleft/accumulate) {
1476 greg 1.24 error(WARNING, "output appears to be complete");
1477     /* XXX should read & discard input? */
1478     quit(0);
1479     }
1480 greg 1.14 /* seek on all files */
1481     nvals = lastout * outvsiz;
1482     lu_doall(&ofiletab, myseeko, &nvals);
1483 greg 1.28 /* skip repeated input */
1484 greg 1.14 for (nvals = 0; nvals < lastout; nvals++)
1485 greg 1.36 if (getinp(oname, fin) < 0)
1486 greg 1.14 error(USER, "unexpected EOF on input");
1487 greg 1.49 lastray = lastdone = (unsigned long)lastout * accumulate;
1488 greg 1.14 if (raysleft)
1489     raysleft -= lastray;
1490 greg 1.1 }