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root/radiance/ray/src/util/rtcontrib.c
Revision: 1.58
Committed: Tue Oct 5 18:05:22 2010 UTC (13 years, 6 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.57: +5 -5 lines
Log Message: 
Fixed issues with integer overflow

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2 greg 1.58 static const char RCSid[] = "$Id: rtcontrib.c,v 1.57 2010/09/26 15:44:00 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 greg 1.57 #include "random.h"
18 greg 1.1 #include "calcomp.h"
19    
20 greg 1.19 #ifndef MAXMODLIST
21 greg 1.1 #define MAXMODLIST 1024 /* maximum modifiers we'll track */
22 greg 1.19 #endif
23 greg 1.1
24 greg 1.58 size_t treebufsiz = BUFSIZ; /* current tree buffer size */
25 greg 1.1
26 greg 1.2 typedef double DCOLOR[3]; /* double-precision color */
27    
28 greg 1.1 /*
29 greg 1.31 * The MODCONT structure is used to accumulate ray contributions
30 greg 1.1 * for a particular modifier, which may be subdivided into bins
31 greg 1.45 * if binv evaluates > 0. If outspec contains a %s in it, this will
32 greg 1.1 * be replaced with the modifier name. If outspec contains a %d in it,
33     * this will be used to create one output file per bin, otherwise all bins
34     * will be written to the same file, in order. If the global outfmt
35     * is 'c', then a 4-byte RGBE pixel will be output for each bin value
36     * and the file will conform to a RADIANCE image if xres & yres are set.
37     */
38     typedef struct {
39     const char *outspec; /* output file specification */
40     const char *modname; /* modifier name */
41     EPNODE *binv; /* bin value expression */
42     int nbins; /* number of accumulation bins */
43 greg 1.2 DCOLOR cbin[1]; /* contribution bins (extends struct) */
44 greg 1.1 } MODCONT; /* modifier contribution */
45    
46     static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); }
47    
48     LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */
49    
50 greg 1.31 /*
51     * The STREAMOUT structure holds an open FILE pointer and a count of
52 greg 1.45 * the number of RGB triplets per record, or 0 if unknown.
53 greg 1.31 */
54     typedef struct {
55     FILE *ofp; /* output file pointer */
56 greg 1.45 int outpipe; /* output is to a pipe */
57 greg 1.31 int reclen; /* triplets/record */
58 greg 1.45 int xr, yr; /* output resolution for picture */
59 greg 1.31 } STREAMOUT;
60    
61     /* close output stream and free record */
62     static void
63     closestream(void *p)
64     {
65     STREAMOUT *sop = (STREAMOUT *)p;
66 greg 1.33 int status;
67 greg 1.45 if (sop->outpipe)
68 greg 1.33 status = pclose(sop->ofp);
69 greg 1.31 else
70 greg 1.33 status = fclose(sop->ofp);
71     if (status)
72     error(SYSTEM, "error closing output stream");
73 greg 1.31 free(p);
74     }
75 greg 1.1
76 greg 1.31 LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */
77 greg 1.1
78 greg 1.14 #define OF_MODIFIER 01
79     #define OF_BIN 02
80    
81 greg 1.32 STREAMOUT *getostream(const char *ospec, const char *mname, int bn, int noopen);
82 greg 1.14 int ofname(char *oname, const char *ospec, const char *mname, int bn);
83     void printheader(FILE *fout, const char *info);
84 greg 1.45 void printresolu(FILE *fout, int xr, int yr);
85 greg 1.1
86     /*
87     * The rcont structure is used to manage i/o with a particular
88     * rtrace child process. Input is passed unchanged from stdin,
89     * and output is processed in input order and accumulated according
90     * to the corresponding modifier and bin number.
91     */
92     struct rtproc {
93     struct rtproc *next; /* next in list of processes */
94     SUBPROC pd; /* rtrace pipe descriptors */
95 greg 1.2 unsigned long raynum; /* ray number for this tree */
96 greg 1.58 size_t bsiz; /* ray tree buffer length */
97 greg 1.2 char *buf; /* ray tree buffer */
98 greg 1.58 size_t nbr; /* number of bytes from rtrace */
99 greg 1.5 }; /* rtrace process buffer */
100 greg 1.1
101     /* rtrace command and defaults */
102 greg 1.18 char *rtargv[256+2*MAXMODLIST] = { "rtrace",
103 greg 1.51 "-dj", ".9", "-dr", "3",
104 greg 1.42 "-ab", "1", "-ad", "350", };
105 greg 1.40
106 greg 1.13 int rtargc = 9;
107 greg 1.1 /* overriding rtrace options */
108 greg 1.40 char *myrtopts[] = { "-h-", "-x", "1", "-y", "0",
109 greg 1.6 "-dt", "0", "-as", "0", "-aa", "0", NULL };
110 greg 1.1
111 greg 1.40 #define RTCOEFF "-o~~TmWdp" /* compute coefficients only */
112     #define RTCONTRIB "-o~~TmVdp" /* compute ray contributions */
113    
114 greg 1.1 struct rtproc rt0; /* head of rtrace process list */
115    
116     struct rtproc *rt_unproc = NULL; /* unprocessed ray trees */
117    
118 greg 1.44 #define PERSIST_NONE 0 /* no persist file */
119     #define PERSIST_SINGLE 1 /* user set -P persist */
120     #define PERSIST_PARALL 2 /* user set -PP persist */
121     #define PERSIST_OURS 3 /* -PP persist belongs to us */
122     int persist_state = PERSIST_NONE; /* persist file state */
123     char persistfn[] = "pfXXXXXX"; /* our persist file name, if set */
124 greg 1.1
125     int gargc; /* global argc */
126     char **gargv; /* global argv */
127     #define progname gargv[0]
128    
129     char *octree; /* global octree argument */
130    
131     int inpfmt = 'a'; /* input format */
132     int outfmt = 'a'; /* output format */
133    
134     int header = 1; /* output header? */
135 greg 1.35 int force_open = 0; /* truncate existing output? */
136 greg 1.46 int recover = 0; /* recover previous output? */
137 greg 1.49 int accumulate = 1; /* input rays per output record */
138 greg 1.1 int xres = 0; /* horiz. output resolution */
139     int yres = 0; /* vert. output resolution */
140    
141 greg 1.49 int account; /* current accumulation count */
142 greg 1.14 unsigned long raysleft; /* number of rays left to trace */
143 greg 1.1 long waitflush; /* how long until next flush */
144    
145     unsigned long lastray = 0; /* last ray number sent */
146     unsigned long lastdone = 0; /* last ray processed */
147    
148 greg 1.2 int using_stdout = 0; /* are we using stdout? */
149    
150 greg 1.1 const char *modname[MAXMODLIST]; /* ordered modifier name list */
151     int nmods = 0; /* number of modifiers */
152    
153 greg 1.29 #define queue_length() (lastray - lastdone)
154    
155 greg 1.31 MODCONT *growmodifier(MODCONT *mp, int nb);
156     MODCONT *addmodifier(char *modn, char *outf, char *binv, int bincnt);
157     void addmodfile(char *fname, char *outf, char *binv, int bincnt);
158 greg 1.1
159 greg 1.5 void init(int np);
160 greg 1.1 int done_rprocs(struct rtproc *rtp);
161 greg 1.45 void reload_output(void);
162 greg 1.14 void recover_output(FILE *fin);
163     void trace_contribs(FILE *fin);
164 greg 1.1 struct rtproc *wait_rproc(void);
165     struct rtproc *get_rproc(void);
166 greg 1.3 void queue_raytree(struct rtproc *rtp);
167     void process_queue(void);
168 greg 1.1
169 greg 1.14 void put_contrib(const DCOLOR cnt, FILE *fout);
170 greg 1.2 void add_contrib(const char *modn);
171 greg 1.49 void done_contrib(int navg);
172 greg 1.1
173 greg 1.29 /* return number of open rtrace processes */
174     static int
175     nrtprocs(void)
176     {
177     int nrtp = 0;
178     struct rtproc *rtp;
179    
180     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
181     nrtp += rtp->pd.running;
182     return(nrtp);
183     }
184    
185 greg 1.1 /* set input/output format */
186     static void
187     setformat(const char *fmt)
188     {
189     switch (fmt[0]) {
190     case 'f':
191     case 'd':
192 greg 1.10 SET_FILE_BINARY(stdin);
193     /* fall through */
194     case 'a':
195 greg 1.1 inpfmt = fmt[0];
196     break;
197     default:
198     goto fmterr;
199     }
200     switch (fmt[1]) {
201     case '\0':
202     outfmt = inpfmt;
203     return;
204     case 'a':
205     case 'f':
206     case 'd':
207     case 'c':
208     outfmt = fmt[1];
209     break;
210     default:
211     goto fmterr;
212     }
213     if (!fmt[2])
214     return;
215     fmterr:
216     sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
217     error(USER, errmsg);
218     }
219    
220     /* gather rays from rtrace and output contributions */
221     int
222     main(int argc, char *argv[])
223     {
224 greg 1.40 int contrib = 0;
225 greg 1.1 int nprocs = 1;
226     char *curout = NULL;
227     char *binval = NULL;
228 greg 1.31 int bincnt = 0;
229 greg 1.5 char fmt[8];
230 greg 1.2 int i, j;
231 greg 1.25 /* need at least one argument */
232     if (argc < 2) {
233     fprintf(stderr,
234 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",
235 greg 1.25 argv[0]);
236     exit(1);
237     }
238 greg 1.2 /* global program name */
239 greg 1.1 gargv = argv;
240 greg 1.11 /* initialize calcomp routines */
241 greg 1.1 esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
242     esupport &= ~(E_OUTCHAN);
243 greg 1.11 varset("PI", ':', PI);
244 greg 1.1 /* get our options */
245 greg 1.2 for (i = 1; i < argc-1; i++) {
246     /* expand arguments */
247     while ((j = expandarg(&argc, &argv, i)) > 0)
248     ;
249     if (j < 0) {
250 greg 1.52 fprintf(stderr, "%s: cannot expand '%s'\n",
251 greg 1.2 argv[0], argv[i]);
252     exit(1);
253     }
254     if (argv[i][0] == '-')
255     switch (argv[i][1]) {
256     case 'n': /* number of processes */
257 greg 1.21 if (argv[i][2] || i >= argc-2) break;
258 greg 1.2 nprocs = atoi(argv[++i]);
259     if (nprocs <= 0)
260     error(USER, "illegal number of processes");
261     continue;
262 greg 1.40 case 'V': /* output contributions */
263     switch (argv[i][2]) {
264     case '\0':
265     contrib = !contrib;
266     continue;
267     case '+': case '1':
268     case 'T': case 't':
269     case 'Y': case 'y':
270     contrib = 1;
271     continue;
272     case '-': case '0':
273     case 'F': case 'f':
274     case 'N': case 'n':
275     contrib = 0;
276     continue;
277     }
278     break;
279 greg 1.49 case 'c': /* input rays per output */
280     if (argv[i][2] || i >= argc-2) break;
281     accumulate = atoi(argv[++i]);
282     continue;
283 greg 1.40 case 'r': /* recover output */
284     if (argv[i][2]) break;
285 greg 1.46 recover = 1;
286 greg 1.40 continue;
287 greg 1.2 case 'h': /* output header? */
288     switch (argv[i][2]) {
289     case '\0':
290     header = !header;
291     continue;
292 greg 1.3 case '+': case '1':
293     case 'T': case 't':
294     case 'Y': case 'y':
295 greg 1.2 header = 1;
296     continue;
297 greg 1.3 case '-': case '0':
298     case 'F': case 'f':
299     case 'N': case 'n':
300 greg 1.2 header = 0;
301     continue;
302     }
303     break;
304 greg 1.35 case 'f': /* file or force or format */
305 greg 1.2 if (!argv[i][2]) {
306 greg 1.9 char *fpath;
307 greg 1.21 if (i >= argc-2) break;
308 greg 1.9 fpath = getpath(argv[++i],
309     getrlibpath(), R_OK);
310     if (fpath == NULL) {
311     sprintf(errmsg,
312     "cannot find file '%s'",
313     argv[i]);
314     error(USER, errmsg);
315     }
316     fcompile(fpath);
317 greg 1.2 continue;
318     }
319 greg 1.35 if (argv[i][2] == 'o') {
320 greg 1.46 force_open = 1;
321 greg 1.35 continue;
322     }
323 greg 1.2 setformat(argv[i]+2);
324     continue;
325     case 'e': /* expression */
326 greg 1.21 if (argv[i][2] || i >= argc-2) break;
327 greg 1.2 scompile(argv[++i], NULL, 0);
328 greg 1.1 continue;
329 greg 1.2 case 'o': /* output file spec. */
330 greg 1.21 if (argv[i][2] || i >= argc-2) break;
331 greg 1.2 curout = argv[++i];
332 greg 1.1 continue;
333 greg 1.2 case 'x': /* horiz. output resolution */
334 greg 1.21 if (argv[i][2] || i >= argc-2) break;
335 greg 1.2 xres = atoi(argv[++i]);
336 greg 1.1 continue;
337 greg 1.2 case 'y': /* vert. output resolution */
338 greg 1.21 if (argv[i][2] || i >= argc-2) break;
339 greg 1.2 yres = atoi(argv[++i]);
340     continue;
341 greg 1.31 case 'b': /* bin expression/count */
342     if (i >= argc-2) break;
343     if (argv[i][2] == 'n') {
344 greg 1.54 bincnt = (int)(eval(argv[++i]) + .5);
345 greg 1.31 continue;
346     }
347     if (argv[i][2]) break;
348 greg 1.2 binval = argv[++i];
349     continue;
350     case 'm': /* modifier name */
351 greg 1.21 if (argv[i][2] || i >= argc-2) break;
352 greg 1.2 rtargv[rtargc++] = "-ti";
353     rtargv[rtargc++] = argv[++i];
354 greg 1.31 addmodifier(argv[i], curout, binval, bincnt);
355 greg 1.1 continue;
356 greg 1.17 case 'M': /* modifier file */
357 greg 1.21 if (argv[i][2] || i >= argc-2) break;
358 greg 1.19 rtargv[rtargc++] = "-tI";
359     rtargv[rtargc++] = argv[++i];
360 greg 1.31 addmodfile(argv[i], curout, binval, bincnt);
361 greg 1.17 continue;
362 greg 1.39 case 'P': /* persist file */
363 greg 1.44 if (i >= argc-2) break;
364     persist_state = (argv[i][2] == 'P') ?
365     PERSIST_PARALL : PERSIST_SINGLE;
366     rtargv[rtargc++] = argv[i];
367     rtargv[rtargc++] = argv[++i];
368     continue;
369 greg 1.1 }
370 greg 1.2 rtargv[rtargc++] = argv[i]; /* assume rtrace option */
371 greg 1.1 }
372 greg 1.49 if (accumulate <= 0) /* no output flushing for single record */
373 greg 1.45 xres = yres = 0;
374 greg 1.2 /* set global argument list */
375     gargc = argc; gargv = argv;
376 greg 1.1 /* add "mandatory" rtrace settings */
377 greg 1.2 for (j = 0; myrtopts[j] != NULL; j++)
378     rtargv[rtargc++] = myrtopts[j];
379 greg 1.40 rtargv[rtargc++] = contrib ? RTCONTRIB : RTCOEFF;
380 greg 1.2 /* just asking for defaults? */
381     if (!strcmp(argv[i], "-defaults")) {
382 greg 1.56 char nps[8], sxres[16], syres[16];
383 greg 1.1 char *rtpath;
384 greg 1.49 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 greg 1.56 rtargv[rtargc++] = "-n";
390     sprintf(nps, "%d", nprocs);
391     rtargv[rtargc++] = nps;
392 greg 1.1 rtargv[rtargc++] = header ? "-h+" : "-h-";
393     sprintf(fmt, "-f%c%c", inpfmt, outfmt);
394     rtargv[rtargc++] = fmt;
395     rtargv[rtargc++] = "-x";
396     sprintf(sxres, "%d", xres);
397     rtargv[rtargc++] = sxres;
398     rtargv[rtargc++] = "-y";
399     sprintf(syres, "%d", yres);
400     rtargv[rtargc++] = syres;
401     rtargv[rtargc++] = "-defaults";
402     rtargv[rtargc] = NULL;
403     rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
404     if (rtpath == NULL) {
405     eputs(rtargv[0]);
406     eputs(": command not found\n");
407     exit(1);
408     }
409     execv(rtpath, rtargv);
410     perror(rtpath); /* execv() should not return */
411     exit(1);
412 greg 1.5 }
413     if (nprocs > 1) { /* add persist file if parallel */
414 greg 1.44 if (persist_state == PERSIST_SINGLE)
415     error(USER, "use -PP option for multiple processes");
416     if (persist_state == PERSIST_NONE) {
417     rtargv[rtargc++] = "-PP";
418     rtargv[rtargc++] = mktemp(persistfn);
419     persist_state = PERSIST_OURS;
420     }
421 greg 1.2 }
422 greg 1.1 /* add format string */
423     sprintf(fmt, "-f%cf", inpfmt);
424     rtargv[rtargc++] = fmt;
425     /* octree argument is last */
426 greg 1.2 if (i <= 0 || i != argc-1 || argv[i][0] == '-')
427     error(USER, "missing octree argument");
428     rtargv[rtargc++] = octree = argv[i];
429 greg 1.1 rtargv[rtargc] = NULL;
430 greg 1.46 /* start rtrace & recover if requested */
431 greg 1.1 init(nprocs);
432 greg 1.46 /* compute contributions */
433     trace_contribs(stdin);
434     /* clean up */
435 greg 1.1 quit(0);
436     }
437    
438 schorsch 1.26 #ifndef SIGALRM
439     #define SIGALRM SIGTERM
440     #endif
441 greg 1.1 /* kill persistent rtrace process */
442     static void
443     killpersist(void)
444     {
445     FILE *fp = fopen(persistfn, "r");
446 schorsch 1.26 RT_PID pid;
447 greg 1.1
448     if (fp == NULL)
449     return;
450     if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0)
451     unlink(persistfn);
452     fclose(fp);
453     }
454    
455     /* close rtrace processes and clean up */
456     int
457     done_rprocs(struct rtproc *rtp)
458     {
459     int st0, st1 = 0;
460    
461     if (rtp->next != NULL) { /* close last opened first! */
462     st1 = done_rprocs(rtp->next);
463     free((void *)rtp->next);
464     rtp->next = NULL;
465     }
466     st0 = close_process(&rtp->pd);
467     if (st0 < 0)
468     error(WARNING, "unknown return status from rtrace process");
469     else if (st0 > 0)
470     return(st0);
471     return(st1);
472     }
473    
474     /* exit with status */
475     void
476     quit(int status)
477     {
478     int rtstat;
479    
480 greg 1.45 if (persist_state == PERSIST_OURS) /* terminate waiting rtrace */
481 greg 1.1 killpersist();
482     /* clean up rtrace process(es) */
483     rtstat = done_rprocs(&rt0);
484     if (status == 0)
485     status = rtstat;
486     exit(status); /* flushes all output streams */
487     }
488    
489 greg 1.5 /* start rtrace processes and initialize */
490 greg 1.1 void
491     init(int np)
492     {
493     struct rtproc *rtp;
494     int i;
495     int maxbytes;
496 greg 1.2 /* make sure we have something to do */
497     if (!nmods)
498     error(USER, "No modifiers specified");
499 greg 1.1 /* assign ray variables */
500     scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
501     scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
502     /* set up signal handling */
503 greg 1.3 signal(SIGINT, quit);
504     #ifdef SIGHUP
505     signal(SIGHUP, quit);
506     #endif
507     #ifdef SIGTERM
508     signal(SIGTERM, quit);
509     #endif
510     #ifdef SIGPIPE
511 greg 1.1 signal(SIGPIPE, quit);
512     #endif
513     rtp = &rt0; /* start rtrace process(es) */
514     for (i = 0; i++ < np; ) {
515     errno = 0;
516     maxbytes = open_process(&rtp->pd, rtargv);
517     if (maxbytes == 0) {
518     eputs(rtargv[0]);
519     eputs(": command not found\n");
520     exit(1);
521     }
522     if (maxbytes < 0)
523     error(SYSTEM, "cannot start rtrace process");
524     if (maxbytes > treebufsiz)
525     treebufsiz = maxbytes;
526 greg 1.2 rtp->raynum = 0;
527 greg 1.1 rtp->bsiz = 0;
528     rtp->buf = NULL;
529 greg 1.2 rtp->nbr = 0;
530 greg 1.1 if (i == np) /* last process? */
531     break;
532     if (i == 1)
533     sleep(2); /* wait for persist file */
534     rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc));
535     if (rtp->next == NULL)
536     error(SYSTEM, "out of memory in init");
537     rtp = rtp->next;
538     }
539     rtp->next = NULL; /* terminate list */
540     if (yres > 0) {
541     if (xres > 0)
542 greg 1.14 raysleft = (unsigned long)xres*yres;
543 greg 1.1 else
544     raysleft = yres;
545     } else
546     raysleft = 0;
547 greg 1.49 if ((account = accumulate) > 0)
548     raysleft *= accumulate;
549 greg 1.57 waitflush = (yres > 0) & (xres > 1) ? 0 : xres;
550 greg 1.46 if (!recover)
551     return;
552     /* recover previous values */
553 greg 1.49 if (accumulate <= 0)
554 greg 1.46 reload_output();
555     else
556     recover_output(stdin);
557 greg 1.1 }
558    
559 greg 1.31 /* grow modifier to accommodate more bins */
560     MODCONT *
561     growmodifier(MODCONT *mp, int nb)
562     {
563     if (nb <= mp->nbins)
564     return mp;
565     mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
566     if (mp == NULL)
567     error(SYSTEM, "out of memory in growmodifier");
568     memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
569     mp->nbins = nb;
570     return mp;
571     }
572    
573 greg 1.1 /* add modifier to our list to track */
574     MODCONT *
575 greg 1.31 addmodifier(char *modn, char *outf, char *binv, int bincnt)
576 greg 1.1 {
577     LUENT *lep = lu_find(&modconttab, modn);
578     MODCONT *mp;
579 greg 1.32 int i;
580 greg 1.1
581     if (lep->data != NULL) {
582     sprintf(errmsg, "duplicate modifier '%s'", modn);
583     error(USER, errmsg);
584     }
585     if (nmods >= MAXMODLIST)
586 greg 1.54 error(INTERNAL, "too many modifiers");
587 greg 1.1 modname[nmods++] = modn; /* XXX assumes static string */
588     lep->key = modn; /* XXX assumes static string */
589     mp = (MODCONT *)malloc(sizeof(MODCONT));
590     if (mp == NULL)
591     error(SYSTEM, "out of memory in addmodifier");
592     mp->outspec = outf; /* XXX assumes static string */
593     mp->modname = modn; /* XXX assumes static string */
594 greg 1.54 if (binv == NULL)
595     binv = "0"; /* use single bin if unspecified */
596     mp->binv = eparse(binv);
597     if (mp->binv->type == NUM) { /* check value if constant */
598     bincnt = (int)(evalue(mp->binv) + 1.5);
599     if (bincnt != 1) {
600     sprintf(errmsg, "illegal non-zero constant for bin (%s)",
601     binv);
602     error(USER, errmsg);
603     }
604     }
605     mp->nbins = 1; /* initialize results holder */
606 greg 1.1 setcolor(mp->cbin[0], 0., 0., 0.);
607 greg 1.54 if (bincnt > 1)
608 greg 1.31 mp = growmodifier(mp, bincnt);
609 greg 1.32 lep->data = (char *)mp;
610     /* allocate output streams */
611 greg 1.45 for (i = bincnt; i-- > 0; )
612 greg 1.32 getostream(mp->outspec, mp->modname, i, 1);
613 greg 1.1 return mp;
614     }
615    
616 greg 1.17 /* add modifiers from a file list */
617     void
618 greg 1.31 addmodfile(char *fname, char *outf, char *binv, int bincnt)
619 greg 1.17 {
620     char *mname[MAXMODLIST];
621     int i;
622 greg 1.20 /* find the file & store strings */
623     if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) {
624     sprintf(errmsg, "cannot find modifier file '%s'", fname);
625     error(SYSTEM, errmsg);
626     }
627 greg 1.17 for (i = 0; mname[i]; i++) /* add each one */
628 greg 1.31 addmodifier(mname[i], outf, binv, bincnt);
629 greg 1.17 }
630    
631 greg 1.1 /* put string to stderr */
632     void
633     eputs(char *s)
634     {
635     static int midline = 0;
636    
637     if (!*s) return;
638     if (!midline) {
639     fputs(progname, stderr);
640     fputs(": ", stderr);
641     }
642     fputs(s, stderr);
643     midline = s[strlen(s)-1] != '\n';
644     }
645    
646 greg 1.14 /* construct output file name and return flags whether modifier/bin present */
647     int
648     ofname(char *oname, const char *ospec, const char *mname, int bn)
649     {
650     const char *mnp = NULL;
651     const char *bnp = NULL;
652     const char *cp;
653    
654     if (ospec == NULL)
655     return -1;
656     for (cp = ospec; *cp; cp++) /* check format position(s) */
657     if (*cp == '%') {
658     do
659     ++cp;
660     while (isdigit(*cp));
661     switch (*cp) {
662     case '%':
663     break;
664     case 's':
665     if (mnp != NULL)
666     return -1;
667     mnp = cp;
668     break;
669     case 'd':
670 greg 1.55 case 'i':
671     case 'o':
672     case 'x':
673     case 'X':
674 greg 1.14 if (bnp != NULL)
675     return -1;
676     bnp = cp;
677     break;
678     default:
679     return -1;
680     }
681     }
682     if (mnp != NULL) { /* create file name */
683     if (bnp != NULL) {
684     if (bnp > mnp)
685     sprintf(oname, ospec, mname, bn);
686     else
687     sprintf(oname, ospec, bn, mname);
688     return OF_MODIFIER|OF_BIN;
689     }
690     sprintf(oname, ospec, mname);
691     return OF_MODIFIER;
692     }
693     if (bnp != NULL) {
694     sprintf(oname, ospec, bn);
695     return OF_BIN;
696     }
697     strcpy(oname, ospec);
698     return 0;
699     }
700    
701 greg 1.1 /* write header to the given output stream */
702     void
703 greg 1.14 printheader(FILE *fout, const char *info)
704 greg 1.1 {
705     extern char VersionID[];
706     FILE *fin = fopen(octree, "r");
707    
708     if (fin == NULL)
709     quit(1);
710 greg 1.2 checkheader(fin, "ignore", fout); /* copy octree header */
711 greg 1.1 fclose(fin);
712     printargs(gargc-1, gargv, fout); /* add our command */
713     fprintf(fout, "SOFTWARE= %s\n", VersionID);
714     fputnow(fout);
715 greg 1.14 if (info != NULL) /* add extra info if given */
716     fputs(info, fout);
717 greg 1.1 switch (outfmt) { /* add output format */
718     case 'a':
719     fputformat("ascii", fout);
720     break;
721     case 'f':
722     fputformat("float", fout);
723     break;
724     case 'd':
725     fputformat("double", fout);
726     break;
727     case 'c':
728     fputformat(COLRFMT, fout);
729     break;
730     }
731     fputc('\n', fout);
732 greg 1.30 }
733    
734     /* write resolution string to given output stream */
735     void
736 greg 1.45 printresolu(FILE *fout, int xr, int yr)
737 greg 1.30 {
738 greg 1.45 if ((xr > 0) & (yr > 0)) /* resolution string */
739     fprtresolu(xr, yr, fout);
740 greg 1.1 }
741    
742 greg 1.32 /* Get output stream pointer (open and write header if new and noopen==0) */
743 greg 1.31 STREAMOUT *
744 greg 1.32 getostream(const char *ospec, const char *mname, int bn, int noopen)
745 greg 1.31 {
746 greg 1.45 static const DCOLOR nocontrib = BLKCOLOR;
747 greg 1.31 static STREAMOUT stdos;
748     int ofl;
749     char oname[1024];
750     LUENT *lep;
751     STREAMOUT *sop;
752 greg 1.1
753     if (ospec == NULL) { /* use stdout? */
754 greg 1.32 if (!noopen && !using_stdout) {
755 greg 1.10 if (outfmt != 'a')
756     SET_FILE_BINARY(stdout);
757     if (header)
758 greg 1.14 printheader(stdout, NULL);
759 greg 1.45 printresolu(stdout, xres, yres);
760 greg 1.57 if (waitflush > 0)
761     fflush(stdout);
762 greg 1.45 stdos.xr = xres; stdos.yr = yres;
763 greg 1.31 using_stdout = 1;
764 greg 1.10 }
765 greg 1.31 stdos.ofp = stdout;
766 greg 1.32 stdos.reclen += noopen;
767 greg 1.31 return &stdos;
768 greg 1.1 }
769 greg 1.14 ofl = ofname(oname, ospec, mname, bn); /* get output name */
770     if (ofl < 0) {
771     sprintf(errmsg, "bad output format '%s'", ospec);
772     error(USER, errmsg);
773     }
774     lep = lu_find(&ofiletab, oname); /* look it up */
775 greg 1.1 if (lep->key == NULL) /* new entry */
776 greg 1.14 lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
777 greg 1.31 sop = (STREAMOUT *)lep->data;
778     if (sop == NULL) { /* allocate stream */
779     sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
780     if (sop == NULL)
781     error(SYSTEM, "out of memory in getostream");
782 greg 1.45 sop->outpipe = oname[0] == '!';
783     sop->reclen = 0;
784 greg 1.32 sop->ofp = NULL; /* open iff noopen==0 */
785 greg 1.45 sop->xr = xres; sop->yr = yres;
786 greg 1.31 lep->data = (char *)sop;
787 greg 1.46 if (!sop->outpipe & !force_open & !recover &&
788     access(oname, F_OK) == 0) {
789 greg 1.45 errno = EEXIST; /* file exists */
790     goto openerr;
791     }
792 greg 1.31 }
793 greg 1.32 if (!noopen && sop->ofp == NULL) { /* open output stream */
794 greg 1.34 long i;
795 greg 1.14 if (oname[0] == '!') /* output to command */
796 greg 1.31 sop->ofp = popen(oname+1, "w");
797 greg 1.45 else /* else open file */
798 greg 1.31 sop->ofp = fopen(oname, "w");
799 greg 1.45 if (sop->ofp == NULL)
800     goto openerr;
801 greg 1.10 if (outfmt != 'a')
802 greg 1.31 SET_FILE_BINARY(sop->ofp);
803 greg 1.14 if (header) {
804     char info[512];
805     char *cp = info;
806 greg 1.32 if (ofl & OF_MODIFIER || sop->reclen == 1) {
807 greg 1.30 sprintf(cp, "MODIFIER=%s\n", mname);
808     while (*cp) ++cp;
809     }
810 greg 1.14 if (ofl & OF_BIN) {
811     sprintf(cp, "BIN=%d\n", bn);
812     while (*cp) ++cp;
813     }
814     *cp = '\0';
815 greg 1.31 printheader(sop->ofp, info);
816 greg 1.14 }
817 greg 1.49 if (accumulate > 0) { /* global resolution */
818 greg 1.47 sop->xr = xres; sop->yr = yres;
819     }
820 greg 1.45 printresolu(sop->ofp, sop->xr, sop->yr);
821 greg 1.2 /* play catch-up */
822 greg 1.49 for (i = accumulate > 0 ? lastdone/accumulate : 0; i--; ) {
823 greg 1.45 int j = sop->reclen;
824     if (j <= 0) j = 1;
825     while (j--)
826     put_contrib(nocontrib, sop->ofp);
827 greg 1.2 if (outfmt == 'a')
828 greg 1.31 putc('\n', sop->ofp);
829 greg 1.2 }
830 greg 1.57 if (waitflush > 0)
831 greg 1.31 fflush(sop->ofp);
832 greg 1.1 }
833 greg 1.45 sop->reclen += noopen; /* add to length if noopen */
834     return sop; /* return output stream */
835     openerr:
836     sprintf(errmsg, "cannot open '%s' for writing", oname);
837     error(SYSTEM, errmsg);
838     return NULL; /* pro forma return */
839 greg 1.1 }
840    
841     /* read input ray into buffer */
842     int
843     getinp(char *buf, FILE *fp)
844     {
845 greg 1.45 double dv[3], *dvp;
846     float *fvp;
847 greg 1.4 char *cp;
848     int i;
849    
850 greg 1.1 switch (inpfmt) {
851     case 'a':
852 greg 1.4 cp = buf; /* make sure we get 6 floats */
853     for (i = 0; i < 6; i++) {
854     if (fgetword(cp, buf+127-cp, fp) == NULL)
855 greg 1.36 return -1;
856     if (i >= 3)
857     dv[i-3] = atof(cp);
858 greg 1.4 if ((cp = fskip(cp)) == NULL || *cp)
859 greg 1.36 return -1;
860 greg 1.4 *cp++ = ' ';
861     }
862     getc(fp); /* get/put eol */
863     *cp-- = '\0'; *cp = '\n';
864 greg 1.36 if (DOT(dv,dv) <= FTINY*FTINY)
865     return 0; /* dummy ray */
866 greg 1.1 return strlen(buf);
867     case 'f':
868     if (fread(buf, sizeof(float), 6, fp) < 6)
869 greg 1.36 return -1;
870 greg 1.45 fvp = (float *)buf + 3;
871     if (DOT(fvp,fvp) <= FTINY*FTINY)
872 greg 1.36 return 0; /* dummy ray */
873 greg 1.1 return sizeof(float)*6;
874     case 'd':
875     if (fread(buf, sizeof(double), 6, fp) < 6)
876 greg 1.36 return -1;
877 greg 1.45 dvp = (double *)buf + 3;
878     if (DOT(dvp,dvp) <= FTINY*FTINY)
879 greg 1.36 return 0; /* dummy ray */
880 greg 1.1 return sizeof(double)*6;
881     }
882     error(INTERNAL, "botched input format");
883 greg 1.36 return -1; /* pro forma return */
884 greg 1.1 }
885    
886 greg 1.2 static float rparams[9]; /* traced ray parameters */
887 greg 1.1
888     /* return channel (ray) value */
889     double
890     chanvalue(int n)
891     {
892     if (--n < 0 || n >= 6)
893     error(USER, "illegal channel number ($N)");
894 greg 1.2 return rparams[n+3];
895 greg 1.1 }
896    
897 greg 1.2 /* add current ray contribution to the appropriate modifier bin */
898 greg 1.1 void
899 greg 1.2 add_contrib(const char *modn)
900 greg 1.1 {
901     LUENT *le = lu_find(&modconttab, modn);
902     MODCONT *mp = (MODCONT *)le->data;
903     int bn;
904    
905     if (mp == NULL) {
906     sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
907     error(USER, errmsg);
908     }
909 greg 1.2 eclock++; /* get bin number */
910 greg 1.1 bn = (int)(evalue(mp->binv) + .5);
911     if (bn <= 0)
912     bn = 0;
913 greg 1.31 else if (bn >= mp->nbins) /* new bin */
914     le->data = (char *)(mp = growmodifier(mp, bn+1));
915 greg 1.2 addcolor(mp->cbin[bn], rparams);
916 greg 1.1 }
917    
918     /* output newline to ASCII file and/or flush as requested */
919     static int
920     puteol(const LUENT *e, void *p)
921     {
922 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
923 greg 1.1
924     if (outfmt == 'a')
925 greg 1.31 putc('\n', sop->ofp);
926 greg 1.1 if (!waitflush)
927 greg 1.31 fflush(sop->ofp);
928     if (ferror(sop->ofp)) {
929 greg 1.1 sprintf(errmsg, "write error on file '%s'", e->key);
930     error(SYSTEM, errmsg);
931     }
932     return 0;
933     }
934    
935 greg 1.2 /* put out ray contribution to file */
936     void
937 greg 1.14 put_contrib(const DCOLOR cnt, FILE *fout)
938 greg 1.2 {
939     float fv[3];
940     COLR cv;
941    
942     switch (outfmt) {
943     case 'a':
944     fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
945     break;
946     case 'f':
947 greg 1.46 copycolor(fv, cnt);
948 greg 1.2 fwrite(fv, sizeof(float), 3, fout);
949     break;
950     case 'd':
951     fwrite(cnt, sizeof(double), 3, fout);
952     break;
953     case 'c':
954     setcolr(cv, cnt[0], cnt[1], cnt[2]);
955     fwrite(cv, sizeof(cv), 1, fout);
956     break;
957     default:
958     error(INTERNAL, "botched output format");
959     }
960 greg 1.57 if (waitflush < 0 && frandom() < 0.001)
961     fflush(fout); /* staggers writes */
962 greg 1.2 }
963    
964 greg 1.45 /* output ray tallies and clear for next accumulation */
965 greg 1.1 void
966 greg 1.49 done_contrib(int navg)
967 greg 1.1 {
968 greg 1.49 double sf = 1.;
969 greg 1.31 int i, j;
970     MODCONT *mp;
971     STREAMOUT *sop;
972 greg 1.49 /* set average scaling */
973     if (navg > 1)
974     sf = 1. / (double)navg;
975 greg 1.1 /* output modifiers in order */
976     for (i = 0; i < nmods; i++) {
977     mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
978 greg 1.49 if (navg > 1) /* average scaling */
979     for (j = mp->nbins; j--; )
980     scalecolor(mp->cbin[j], sf);
981 greg 1.31 sop = getostream(mp->outspec, mp->modname, 0,0);
982     put_contrib(mp->cbin[0], sop->ofp);
983 greg 1.12 if (mp->nbins > 3 && /* minor optimization */
984 greg 1.31 sop == getostream(mp->outspec, mp->modname, 1,0))
985 greg 1.12 for (j = 1; j < mp->nbins; j++)
986 greg 1.31 put_contrib(mp->cbin[j], sop->ofp);
987 greg 1.12 else
988     for (j = 1; j < mp->nbins; j++)
989 greg 1.14 put_contrib(mp->cbin[j],
990 greg 1.31 getostream(mp->outspec,mp->modname,j,0)->ofp);
991 greg 1.45 /* clear for next time */
992 greg 1.2 memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
993 greg 1.1 }
994     --waitflush; /* terminate records */
995     lu_doall(&ofiletab, puteol, NULL);
996 greg 1.2 if (using_stdout & (outfmt == 'a'))
997     putc('\n', stdout);
998     if (!waitflush) {
999 greg 1.57 waitflush = (yres > 0) & (xres > 1) ? 0 : xres;
1000 greg 1.2 if (using_stdout)
1001     fflush(stdout);
1002     }
1003 greg 1.1 }
1004    
1005 greg 1.3 /* queue completed ray tree produced by rtrace process */
1006     void
1007     queue_raytree(struct rtproc *rtp)
1008     {
1009     struct rtproc *rtu, *rtl = NULL;
1010     /* insert following ray order */
1011     for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
1012     if (rtp->raynum < rtu->raynum)
1013     break;
1014     rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
1015     if (rtu == NULL)
1016     error(SYSTEM, "out of memory in queue_raytree");
1017     *rtu = *rtp;
1018     if (rtl == NULL) {
1019     rtu->next = rt_unproc;
1020     rt_unproc = rtu;
1021     } else {
1022     rtu->next = rtl->next;
1023     rtl->next = rtu;
1024     }
1025     rtp->raynum = 0; /* clear path for next ray tree */
1026     rtp->bsiz = 0;
1027     rtp->buf = NULL;
1028     rtp->nbr = 0;
1029     }
1030    
1031     /* process completed ray trees from our queue */
1032 greg 1.1 void
1033 greg 1.3 process_queue(void)
1034 greg 1.1 {
1035 greg 1.3 char modname[128];
1036     /* ray-ordered queue */
1037     while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
1038     struct rtproc *rtp = rt_unproc;
1039 greg 1.2 int n = rtp->nbr;
1040 greg 1.1 const char *cp = rtp->buf;
1041     while (n > 0) { /* process rays */
1042 greg 1.2 register char *mnp = modname;
1043 greg 1.1 /* skip leading tabs */
1044     while (n > 0 && *cp == '\t') {
1045     cp++; n--;
1046     }
1047 greg 1.2 if (!n || !(isalpha(*cp) | (*cp == '_')))
1048     error(USER, "bad modifier name from rtrace");
1049     /* get modifier name */
1050 greg 1.40 while (n > 1 && *cp != '\t') {
1051     if (mnp - modname >= sizeof(modname)-2)
1052     error(INTERNAL, "modifier name too long");
1053 greg 1.1 *mnp++ = *cp++; n--;
1054     }
1055     *mnp = '\0';
1056 greg 1.2 cp++; n--; /* eat following tab */
1057 greg 1.1 if (n < (int)(sizeof(float)*9))
1058     error(USER, "incomplete ray value from rtrace");
1059     /* add ray contribution */
1060 greg 1.2 memcpy(rparams, cp, sizeof(float)*9);
1061 greg 1.1 cp += sizeof(float)*9; n -= sizeof(float)*9;
1062 greg 1.2 add_contrib(modname);
1063 greg 1.1 }
1064 greg 1.49 /* time to produce record? */
1065     if (account > 0 && !--account)
1066     done_contrib(account = accumulate);
1067 greg 1.1 lastdone = rtp->raynum;
1068 greg 1.36 if (rtp->buf != NULL) /* free up buffer space */
1069     free(rtp->buf);
1070 greg 1.3 rt_unproc = rtp->next;
1071     free(rtp); /* done with this ray tree */
1072 greg 1.1 }
1073     }
1074    
1075     /* wait for rtrace process to finish with ray tree */
1076     struct rtproc *
1077     wait_rproc(void)
1078     {
1079     struct rtproc *rtfree = NULL;
1080     fd_set readset, errset;
1081 greg 1.58 ssize_t nr;
1082 greg 1.1 struct rtproc *rt;
1083     int n;
1084    
1085     do {
1086     nr = 0; /* prepare select call */
1087     FD_ZERO(&readset); FD_ZERO(&errset); n = 0;
1088     for (rt = &rt0; rt != NULL; rt = rt->next) {
1089     if (rt->raynum) {
1090     FD_SET(rt->pd.r, &readset);
1091     ++nr;
1092     }
1093     FD_SET(rt->pd.r, &errset);
1094     if (rt->pd.r >= n)
1095     n = rt->pd.r + 1;
1096     }
1097     if (!nr) /* no rays pending */
1098     break;
1099     if (nr > 1) { /* call select for multiple proc's */
1100     errno = 0;
1101     if (select(n, &readset, NULL, &errset, NULL) < 0)
1102     error(SYSTEM, "select call error in wait_rproc()");
1103     } else
1104     FD_ZERO(&errset);
1105     nr = 0;
1106     for (rt = &rt0; rt != NULL; rt = rt->next) {
1107     if (!FD_ISSET(rt->pd.r, &readset) &&
1108     !FD_ISSET(rt->pd.r, &errset))
1109     continue;
1110     if (rt->buf == NULL) {
1111     rt->bsiz = treebufsiz;
1112     rt->buf = (char *)malloc(treebufsiz);
1113 greg 1.2 } else if (rt->nbr + BUFSIZ > rt->bsiz) {
1114 greg 1.1 if (rt->bsiz + BUFSIZ <= treebufsiz)
1115     rt->bsiz = treebufsiz;
1116     else
1117 greg 1.28 treebufsiz = rt->bsiz += BUFSIZ;
1118 greg 1.1 rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1119     }
1120     if (rt->buf == NULL)
1121     error(SYSTEM, "out of memory in wait_rproc");
1122 greg 1.2 nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1123     if (nr <= 0)
1124 greg 1.1 error(USER, "rtrace process died");
1125 greg 1.2 rt->nbr += nr; /* advance & check */
1126     if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
1127     "~\t~\t", 4)) {
1128     rt->nbr -= 4; /* elide terminator */
1129 greg 1.3 queue_raytree(rt);
1130 greg 1.1 rtfree = rt; /* ready for next ray */
1131     }
1132     }
1133     } while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */
1134     return rtfree;
1135     }
1136    
1137     /* return next available rtrace process */
1138     struct rtproc *
1139     get_rproc(void)
1140     {
1141     struct rtproc *rtp;
1142     /* check for idle rtrace */
1143     for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
1144     if (!rtp->raynum)
1145     return rtp;
1146     return wait_rproc(); /* need to wait for one */
1147     }
1148    
1149     /* trace ray contributions (main loop) */
1150     void
1151 greg 1.5 trace_contribs(FILE *fin)
1152 greg 1.1 {
1153 greg 1.49 static int ignore_warning_given = 0;
1154 greg 1.1 char inpbuf[128];
1155     int iblen;
1156     struct rtproc *rtp;
1157     /* loop over input */
1158 greg 1.36 while ((iblen = getinp(inpbuf, fin)) >= 0) {
1159 greg 1.49 if (!iblen && accumulate != 1) {
1160     if (!ignore_warning_given++)
1161     error(WARNING,
1162     "dummy ray(s) ignored during accumulation\n");
1163     continue;
1164     }
1165 greg 1.53 if (!iblen || /* need flush/reset? */
1166 greg 1.36 queue_length() > 10*nrtprocs() ||
1167     lastray+1 < lastray) {
1168 greg 1.1 while (wait_rproc() != NULL)
1169 greg 1.3 process_queue();
1170 greg 1.34 if (lastray+1 < lastray)
1171     lastdone = lastray = 0;
1172 greg 1.1 }
1173     rtp = get_rproc(); /* get avail. rtrace process */
1174 greg 1.36 rtp->raynum = ++lastray; /* assign ray */
1175     if (iblen) { /* trace ray if valid */
1176     writebuf(rtp->pd.w, inpbuf, iblen);
1177     } else { /* else bypass dummy ray */
1178 greg 1.53 queue_raytree(rtp); /* queue empty ray/record */
1179     if ((yres <= 0) | (xres <= 0))
1180     waitflush = 1; /* flush right after */
1181 greg 1.36 }
1182 greg 1.38 process_queue(); /* catch up with results */
1183 greg 1.14 if (raysleft && !--raysleft)
1184 greg 1.38 break; /* preemptive EOI */
1185 greg 1.1 }
1186     while (wait_rproc() != NULL) /* process outstanding rays */
1187 greg 1.3 process_queue();
1188 greg 1.49 if (accumulate <= 0)
1189     done_contrib(0); /* output tallies */
1190     else if (account < accumulate) {
1191     error(WARNING, "partial accumulation in final record");
1192     done_contrib(accumulate - account);
1193     }
1194 greg 1.14 if (raysleft)
1195 greg 1.2 error(USER, "unexpected EOF on input");
1196 greg 1.14 lu_done(&ofiletab); /* close output files */
1197     }
1198    
1199 greg 1.46 /* get ray contribution from previous file */
1200     static int
1201     get_contrib(DCOLOR cnt, FILE *finp)
1202     {
1203     COLOR fv;
1204     COLR cv;
1205    
1206     switch (outfmt) {
1207     case 'a':
1208     return(fscanf(finp,"%lf %lf %lf",&cnt[0],&cnt[1],&cnt[2]) == 3);
1209     case 'f':
1210     if (fread(fv, sizeof(fv[0]), 3, finp) != 3)
1211     return(0);
1212     copycolor(cnt, fv);
1213     return(1);
1214     case 'd':
1215     return(fread(cnt, sizeof(cnt[0]), 3, finp) == 3);
1216     case 'c':
1217     if (fread(cv, sizeof(cv), 1, finp) != 1)
1218     return(0);
1219     colr_color(fv, cv);
1220     copycolor(cnt, fv);
1221     return(1);
1222     default:
1223     error(INTERNAL, "botched output format");
1224     }
1225     return(0); /* pro forma return */
1226     }
1227    
1228     /* close output file opened for input */
1229 greg 1.14 static int
1230 greg 1.46 myclose(const LUENT *e, void *p)
1231 greg 1.14 {
1232 greg 1.31 STREAMOUT *sop = (STREAMOUT *)e->data;
1233    
1234 greg 1.46 if (sop->ofp == NULL)
1235 greg 1.50 return(0);
1236 greg 1.46 fclose(sop->ofp);
1237     sop->ofp = NULL;
1238 greg 1.50 return(0);
1239 greg 1.14 }
1240    
1241 greg 1.45 /* load previously accumulated values */
1242     void
1243     reload_output(void)
1244     {
1245     int i, j;
1246     MODCONT *mp;
1247     int ofl;
1248     char oname[1024];
1249     char *fmode = "rb";
1250     char *outvfmt;
1251     LUENT *ment, *oent;
1252 greg 1.46 int xr, yr;
1253 greg 1.45 STREAMOUT sout;
1254 greg 1.46 DCOLOR rgbv;
1255 greg 1.45
1256     switch (outfmt) {
1257     case 'a':
1258     outvfmt = "ascii";
1259     fmode = "r";
1260     break;
1261     case 'f':
1262     outvfmt = "float";
1263     break;
1264     case 'd':
1265     outvfmt = "double";
1266     break;
1267     case 'c':
1268     outvfmt = COLRFMT;
1269     break;
1270     default:
1271     error(INTERNAL, "botched output format");
1272     return;
1273     }
1274 greg 1.46 /* reload modifier values */
1275 greg 1.45 for (i = 0; i < nmods; i++) {
1276     ment = lu_find(&modconttab,modname[i]);
1277     mp = (MODCONT *)ment->data;
1278     if (mp->outspec == NULL)
1279     error(USER, "cannot reload from stdout");
1280     if (mp->outspec[0] == '!')
1281     error(USER, "cannot reload from command");
1282 greg 1.46 for (j = 0; ; j++) { /* load each modifier bin */
1283 greg 1.45 ofl = ofname(oname, mp->outspec, mp->modname, j);
1284     if (ofl < 0)
1285     error(USER, "bad output file specification");
1286     oent = lu_find(&ofiletab, oname);
1287     if (oent->data != NULL) {
1288     sout = *(STREAMOUT *)oent->data;
1289     } else {
1290     sout.reclen = 0;
1291 greg 1.46 sout.outpipe = 0;
1292     sout.xr = xres; sout.yr = yres;
1293 greg 1.45 sout.ofp = NULL;
1294     }
1295 greg 1.46 if (sout.ofp == NULL) { /* open output as input */
1296     sout.ofp = fopen(oname, fmode);
1297     if (sout.ofp == NULL) {
1298     if (j)
1299     break; /* assume end of modifier */
1300     sprintf(errmsg, "missing reload file '%s'",
1301     oname);
1302     error(WARNING, errmsg);
1303     break;
1304     }
1305     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1306     sprintf(errmsg, "format mismatch for '%s'",
1307     oname);
1308     error(USER, errmsg);
1309     }
1310     if ((sout.xr > 0) & (sout.yr > 0) &&
1311     (!fscnresolu(&xr, &yr, sout.ofp) ||
1312 greg 1.47 (xr != sout.xr) |
1313     (yr != sout.yr))) {
1314 greg 1.46 sprintf(errmsg, "resolution mismatch for '%s'",
1315     oname);
1316     error(USER, errmsg);
1317     }
1318 greg 1.45 }
1319 greg 1.46 /* read in RGB value */
1320     if (!get_contrib(rgbv, sout.ofp)) {
1321 greg 1.48 if (!j) {
1322     fclose(sout.ofp);
1323 greg 1.46 break; /* ignore empty file */
1324 greg 1.48 }
1325 greg 1.47 if (j < mp->nbins) {
1326 greg 1.46 sprintf(errmsg, "missing data in '%s'",
1327     oname);
1328     error(USER, errmsg);
1329     }
1330     break;
1331     }
1332     if (j >= mp->nbins) /* grow modifier size */
1333     ment->data = (char *)(mp = growmodifier(mp, j+1));
1334     copycolor(mp->cbin[j], rgbv);
1335 greg 1.48 if (oent->key == NULL) /* new file entry */
1336     oent->key = strcpy((char *)
1337     malloc(strlen(oname)+1), oname);
1338     if (oent->data == NULL)
1339     oent->data = (char *)malloc(sizeof(STREAMOUT));
1340     *(STREAMOUT *)oent->data = sout;
1341 greg 1.45 }
1342     }
1343 greg 1.46 lu_doall(&ofiletab, myclose, NULL); /* close all files */
1344     }
1345    
1346     /* seek on the given output file */
1347     static int
1348     myseeko(const LUENT *e, void *p)
1349     {
1350     STREAMOUT *sop = (STREAMOUT *)e->data;
1351     off_t nbytes = *(off_t *)p;
1352    
1353     if (sop->reclen > 1)
1354     nbytes = nbytes * sop->reclen;
1355     if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1356     sprintf(errmsg, "seek error on file '%s'", e->key);
1357     error(SYSTEM, errmsg);
1358     }
1359     return 0;
1360 greg 1.45 }
1361    
1362 greg 1.14 /* recover output if possible */
1363     void
1364     recover_output(FILE *fin)
1365     {
1366 greg 1.31 off_t lastout = -1;
1367     int outvsiz, recsiz;
1368     char *outvfmt;
1369     int i, j;
1370     MODCONT *mp;
1371     int ofl;
1372     char oname[1024];
1373     LUENT *ment, *oent;
1374     STREAMOUT sout;
1375     off_t nvals;
1376     int xr, yr;
1377 greg 1.14
1378     switch (outfmt) {
1379     case 'a':
1380     error(USER, "cannot recover ASCII output");
1381     return;
1382     case 'f':
1383     outvsiz = sizeof(float)*3;
1384     outvfmt = "float";
1385     break;
1386     case 'd':
1387     outvsiz = sizeof(double)*3;
1388     outvfmt = "double";
1389     break;
1390     case 'c':
1391     outvsiz = sizeof(COLR);
1392     outvfmt = COLRFMT;
1393     break;
1394     default:
1395     error(INTERNAL, "botched output format");
1396     return;
1397     }
1398     /* check modifier outputs */
1399     for (i = 0; i < nmods; i++) {
1400     ment = lu_find(&modconttab,modname[i]);
1401     mp = (MODCONT *)ment->data;
1402     if (mp->outspec == NULL)
1403     error(USER, "cannot recover from stdout");
1404 greg 1.31 if (mp->outspec[0] == '!')
1405     error(USER, "cannot recover from command");
1406 greg 1.14 for (j = 0; ; j++) { /* check each bin's file */
1407     ofl = ofname(oname, mp->outspec, mp->modname, j);
1408     if (ofl < 0)
1409     error(USER, "bad output file specification");
1410     oent = lu_find(&ofiletab, oname);
1411 greg 1.31 if (oent->data != NULL) {
1412     sout = *(STREAMOUT *)oent->data;
1413     } else {
1414 greg 1.45 sout.reclen = 0;
1415 greg 1.46 sout.outpipe = 0;
1416 greg 1.31 sout.ofp = NULL;
1417     }
1418     if (sout.ofp != NULL) { /* already open? */
1419 greg 1.14 if (ofl & OF_BIN)
1420     continue;
1421     break;
1422     }
1423     /* open output */
1424 greg 1.31 sout.ofp = fopen(oname, "rb+");
1425     if (sout.ofp == NULL) {
1426 greg 1.23 if (j)
1427     break; /* assume end of modifier */
1428     sprintf(errmsg, "missing recover file '%s'",
1429     oname);
1430 greg 1.45 error(WARNING, errmsg);
1431     break;
1432 greg 1.23 }
1433 greg 1.31 nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1434 greg 1.14 if (nvals <= 0) {
1435     lastout = 0; /* empty output, quit here */
1436 greg 1.31 fclose(sout.ofp);
1437 greg 1.14 break;
1438     }
1439 greg 1.45 if (!sout.reclen) {
1440 greg 1.31 if (!(ofl & OF_BIN)) {
1441 greg 1.14 sprintf(errmsg,
1442 greg 1.32 "need -bn to recover file '%s'",
1443 greg 1.14 oname);
1444 greg 1.32 error(USER, errmsg);
1445 greg 1.14 }
1446 greg 1.31 recsiz = outvsiz;
1447     } else
1448     recsiz = outvsiz * sout.reclen;
1449    
1450     lseek(fileno(sout.ofp), 0, SEEK_SET);
1451     if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1452     sprintf(errmsg, "format mismatch for '%s'",
1453     oname);
1454     error(USER, errmsg);
1455     }
1456 greg 1.48 sout.xr = xres; sout.yr = yres;
1457     if ((sout.xr > 0) & (sout.yr > 0) &&
1458 greg 1.31 (!fscnresolu(&xr, &yr, sout.ofp) ||
1459 greg 1.48 (xr != sout.xr) |
1460     (yr != sout.yr))) {
1461 greg 1.31 sprintf(errmsg, "resolution mismatch for '%s'",
1462     oname);
1463     error(USER, errmsg);
1464 greg 1.14 }
1465 greg 1.31 nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1466     if ((lastout < 0) | (nvals < lastout))
1467 greg 1.14 lastout = nvals;
1468 greg 1.31 if (oent->key == NULL) /* new entry */
1469 greg 1.14 oent->key = strcpy((char *)
1470     malloc(strlen(oname)+1), oname);
1471 greg 1.31 if (oent->data == NULL)
1472     oent->data = (char *)malloc(sizeof(STREAMOUT));
1473     *(STREAMOUT *)oent->data = sout;
1474 greg 1.14 if (!(ofl & OF_BIN))
1475     break; /* no bin separation */
1476     }
1477     if (!lastout) { /* empty output */
1478 greg 1.16 error(WARNING, "no previous data to recover");
1479 greg 1.14 lu_done(&ofiletab); /* reclose all outputs */
1480     return;
1481     }
1482 greg 1.31 if (j > mp->nbins) /* reallocate modifier bins */
1483     ment->data = (char *)(mp = growmodifier(mp, j));
1484 greg 1.14 }
1485 greg 1.15 if (lastout < 0) {
1486 greg 1.16 error(WARNING, "no output files to recover");
1487 greg 1.15 return;
1488     }
1489 greg 1.49 if (raysleft && lastout >= raysleft/accumulate) {
1490 greg 1.24 error(WARNING, "output appears to be complete");
1491     /* XXX should read & discard input? */
1492     quit(0);
1493     }
1494 greg 1.14 /* seek on all files */
1495     nvals = lastout * outvsiz;
1496     lu_doall(&ofiletab, myseeko, &nvals);
1497 greg 1.28 /* skip repeated input */
1498 greg 1.14 for (nvals = 0; nvals < lastout; nvals++)
1499 greg 1.36 if (getinp(oname, fin) < 0)
1500 greg 1.14 error(USER, "unexpected EOF on input");
1501 greg 1.49 lastray = lastdone = (unsigned long)lastout * accumulate;
1502 greg 1.14 if (raysleft)
1503     raysleft -= lastray;
1504 greg 1.1 }