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root/Development/ray/src/util/rpiece.c

Comparing ray/src/util/rpiece.c (file contents):
Revision 2.25 by greg, Fri Aug 6 17:19:52 1993 UTC vs.
Revision 2.53 by greg, Sat Jan 21 22:04:02 2012 UTC

#	Line 1 | Line 1
1	–	/* Copyright (c) 1993 Regents of the University of California */
2	–
1		#ifndef lint
2	<	static char SCCSid[] = "$SunId$ LBL";
2	>	static const char       RCSid[] = "$Id$";
3		#endif
6	–
4		/*
5		* Generate sections of a picture.
6		*/
7
8	+
9	+	#include <stdio.h>
10	+	#include <signal.h>
11	+	#include <sys/types.h>
12	+
13	+	#include "platform.h"
14	+	#ifndef NON_POSIX /* XXX need abstraction for process management */
15	+	#include <sys/wait.h>
16	+	#endif
17	+
18		#include "standard.h"
19	+	#include "color.h"
20	+	#include "view.h"
21	+	#include "rtprocess.h"
22
23		#ifndef F_SETLKW
24
25	<	main(argc, argv)
26	<	int argc;
27	<	char *argv[];
25	>	int
26	>	main(
27	>	int argc,
28	>	char *argv[]
29	>	)
30		{
31		fprintf(stderr, "%s: no NFS lock manager on this machine\n", argv[0]);
32		exit(1);
#	Line 22 | Line 34 | char *argv[];
34
35		#else
36
25	–	#include <signal.h>
26	–	#include "color.h"
27	–	#include "view.h"
28	–	#include "resolu.h"
29	–
37		#ifndef NFS
38		#define  NFS                    1
39		#endif
#	Line 39 | Line 46 | char *argv[];
46		#endif
47		#endif
48		/* protection from SYSV signals(!) */
49	<	#if defined(sgi) || defined(hpux)
49	>	#if defined(sgi)
50		#define guard_io()      sighold(SIGALRM)
51		#define unguard()       sigrelse(SIGALRM)
52		#endif
53		#ifndef guard_io
54	<	#define guard_io()      0
55	<	#define unguard()       0
54	>	#define guard_io()
55	>	#define unguard()
56		#endif
57	+
58	+	extern char  *strerror();
59	+
60		/* rpict command */
61		char  *rpargv[128] = {"rpict", "-S", "1"};
62		int  rpargc = 3;
53	–	int  rpd[3];
63		FILE  *torp, *fromrp;
64		COLR  *pbuf;
65		/* our view parameters */
#	Line 69 | Line 78 | int  nforked = 0;
78
79		char  *progname;
80		int  verbose = 0;
81	+	int  nowarn = 0;
82	+	unsigned  timelim = 0;
83		int  rvrlim = -1;
84
74	–	extern long  lseek(), ftell();
75	–
85		int  gotalrm = 0;
86	<	int  onalrm() { gotalrm++; }
86	>	void  onalrm(int i) { gotalrm++; }
87
88	+	static void dolock(int  fd, int  ltyp);
89	+	static void init(int  ac, char  **av);
90	+	static int nextpiece(int        *xp, int        *yp);
91	+	static int rvrpiece(int *xp, int        *yp);
92	+	static int cleanup(int  rstat);
93	+	static void rpiece(void);
94	+	static int putpiece(int xpos, int       ypos);
95	+	static void filerr(char  *t);
96
97	<	main(argc, argv)
98	<	int  argc;
99	<	char  *argv[];
97	>
98	>	int
99	>	main(
100	>	int  argc,
101	>	char  *argv[]
102	>	)
103		{
104		register int  i, rval;
105
106		progname = argv[0];
107		for (i = 1; i < argc; i++) {
108		/* expand arguments */
109	<	while (rval = expandarg(&argc, &argv, i))
110	<	if (rval < 0) {
111	<	fprintf(stderr, "%s: cannot expand '%s'",
112	<	argv[0], argv[i]);
113	<	exit(1);
114	<	}
109	>	while ((rval = expandarg(&argc, &argv, i)) > 0)
110	>	;
111	>	if (rval < 0) {
112	>	fprintf(stderr, "%s: cannot expand '%s'\n",
113	>	argv[0], argv[i]);
114	>	exit(1);
115	>	}
116		if (argv[i][0] == '-')
117		switch (argv[i][1]) {
118	+	case 'w':
119	+	if (!argv[i][2])
120	+	nowarn = !nowarn;
121	+	else if (argv[i][2] == '+')
122	+	nowarn = 0;
123	+	else if (argv[i][2] == '-')
124	+	nowarn = 1;
125	+	break;
126		case 'v':
127		switch (argv[i][2]) {
128		case '\0':      /* verbose option */
#	Line 116 | Line 145 | char  *argv[];
145		}
146		break;
147		case 'p':               /* pixel aspect ratio? */
148	+	if (argv[i][2] == 'm') {
149	+	fprintf(stderr, "%s: -pm unsupported\n",
150	+	argv[0]);
151	+	++i;
152	+	continue;
153	+	}
154		if (argv[i][2] != 'a' || argv[i][3])
155		break;
156	<	pixaspect = atof(argv[i+1]);
156	>	pixaspect = atof(argv[++i]);
157		continue;
158	+	case 'T':               /* time limit (hours) */
159	+	if (argv[i][2])
160	+	break;
161	+	timelim = atof(argv[++i])*3600. + .5;
162	+	continue;
163		case 'x':               /* overall x resolution */
164		if (argv[i][2])
165		break;
#	Line 148 | Line 188 | char  *argv[];
188		case 'F':               /* syncronization file */
189		if (argv[i][2])
190		break;
191	<	if ((syncfp = fopen(argv[++i],"r+")) == NULL) {
191	>	if ((syncfp =
192	>	fdopen(open(argv[++i],O_RDWR|O_CREAT,0666),"r+")) == NULL) {
193		fprintf(stderr, "%s: cannot open\n",
194		argv[i]);
195		exit(1);
#	Line 163 | Line 204 | char  *argv[];
204		break;
205		outfile = argv[++i];
206		continue;
207	<	} else if (i >= argc-1)
208	<	break;
207	>	}
208	>	else if (i >= argc-1)
209	>	break;
210		rpargv[rpargc++] = argv[i];
211		}
212		if (i >= argc) {
#	Line 181 | Line 223 | char  *argv[];
223		}
224
225
226	<	dolock(fd, ltyp)                /* lock or unlock a file */
227	<	int  fd;
228	<	int  ltyp;
226	>	static void
227	>	dolock(         /* lock or unlock a file */
228	>	int  fd,
229	>	int  ltyp
230	>	)
231		{
232		static struct flock  fls;       /* static so initialized to zeroes */
233
234		fls.l_type = ltyp;
235		if (fcntl(fd, F_SETLKW, &fls) < 0) {
236	<	fprintf(stderr, "%s: cannot lock/unlock file\n", progname);
236	>	fprintf(stderr, "%s: cannot lock/unlock file: %s\n",
237	>	progname, strerror(errno));
238		exit(1);
239		}
240		}
241
242
243	<	init(ac, av)                    /* set up output file and start rpict */
244	<	int  ac;
245	<	char  **av;
243	>	static void
244	>	init(                   /* set up output file and start rpict */
245	>	int  ac,
246	>	char  **av
247	>	)
248		{
249		static char  hrbuf[16], vrbuf[16];
250		extern char  VersionID[];
251		char  *err;
252		FILE  *fp;
253		int  hr, vr;
254	+	SUBPROC  rpd; /* since we don't close_process(), this can be local */
255		/* set up view */
256		if ((err = setview(&ourview)) != NULL) {
257		fprintf(stderr, "%s: %s\n", progname, err);
#	Line 215 | Line 263 | char  **av;
263		sflock(F_UNLCK);
264		}
265		/* compute piece size */
266	+	hr = hres; vr = vres;
267	+	if (pixaspect > FTINY)
268	+	normaspect(viewaspect(&ourview), &pixaspect, &hr, &vr);
269		hres /= hmult;
270		vres /= vmult;
271	+	if (hres <= 0 || vres <= 0) {
272	+	fprintf(stderr, "%s: illegal resolution/subdivision\n", progname);
273	+	exit(1);
274	+	}
275		normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres);
276	+	if (!nowarn && (hr != hres*hmult) | (vr != vres*vmult))
277	+	fprintf(stderr,
278	+	"%s: warning - resolution changed from %dx%d to %dx%d\n",
279	+	progname, hr, vr, hres*hmult, vres*vmult);
280		sprintf(hrbuf, "%d", hres);
281		rpargv[rpargc++] = "-x"; rpargv[rpargc++] = hrbuf;
282		sprintf(vrbuf, "%d", vres);
#	Line 230 | Line 289 | char  **av;
289		dolock(outfd, F_WRLCK);
290		if ((fp = fdopen(dup(outfd), "w")) == NULL)
291		goto filerr;
292	<	printargs(ac, av, fp);          /* write header */
292	>	newheader("RADIANCE", fp);      /* create header */
293	>	printargs(ac, av, fp);
294		fprintf(fp, "SOFTWARE= %s\n", VersionID);
295		fputs(VIEWSTR, fp);
296		fprintview(&ourview, fp);
297		putc('\n', fp);
298	+	fputnow(fp);
299		if (pixaspect < .99 || pixaspect > 1.01)
300		fputaspect(pixaspect, fp);
301		fputformat(COLRFMT, fp);
#	Line 261 | Line 322 | char  **av;
322		goto filerr;
323		dolock(outfd, F_UNLCK);
324		/* start rpict process */
325	<	if (open_process(rpd, rpargv) <= 0) {
325	>	if (open_process(&rpd, rpargv) <= 0) {
326		fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]);
327		exit(1);
328		}
329	<	if ((fromrp = fdopen(rpd[0], "r")) == NULL ||
330	<	(torp = fdopen(rpd[1], "w")) == NULL) {
329	>	if ((fromrp = fdopen(rpd.r, "r")) == NULL ||
330	>	(torp = fdopen(rpd.w, "w")) == NULL) {
331		fprintf(stderr, "%s: cannot open stream to %s\n",
332		progname, rpargv[0]);
333		exit(1);
#	Line 276 | Line 337 | char  **av;
337		exit(1);
338		}
339		signal(SIGALRM, onalrm);
340	+	if (timelim)
341	+	alarm(timelim);
342		return;
343		filerr:
344		fprintf(stderr, "%s: i/o error on file \"%s\"\n", progname, outfile);
#	Line 283 | Line 346 | filerr:
346		}
347
348
349	<	int
350	<	nextpiece(xp, yp)               /* get next piece assignment */
351	<	int  *xp, *yp;
349	>	static int
350	>	nextpiece(              /* get next piece assignment */
351	>	int     *xp,
352	>	int     *yp
353	>	)
354		{
355		if (gotalrm)                    /* someone wants us to quit */
356		return(0);
#	Line 321 | Line 386 | int  *xp, *yp;
386		sflock(F_UNLCK);                /* release sync file */
387		return(1);
388		}
389	<	if (scanf("%d %d", xp, yp) == 2)        /* use stdin */
325	<	return(1);
326	<	fprintf(stderr, "%s: input format error\n", progname);
327	<	exit(cleanup(1));
389	>	return(scanf("%d %d", xp, yp) == 2);    /* use stdin */
390		}
391
392
393	<	int
394	<	rvrpiece(xp, yp)                /* check for recoverable pieces */
395	<	register int  *xp, *yp;
393	>	static int
394	>	rvrpiece(               /* check for recoverable pieces */
395	>	register int    *xp,
396	>	register int    *yp
397	>	)
398		{
399		static char  *pdone = NULL;     /* which pieces are done */
400		static long  readpos = -1;      /* how far we've read */
#	Line 344 | Line 408 | register int  *xp, *yp;
408		return(0);              /* only check if asked */
409		if (pdone == NULL)              /* first call */
410		pdone = calloc(hmult*vmult, sizeof(char));
411	+	if (pdone == NULL) {
412	+	fprintf(stderr, "%s: out of memory\n", progname);
413	+	exit(1);
414	+	}
415		if (readpos != -1)              /* mark what's been done */
416		fseek(syncfp, readpos, 0);
417		while (fscanf(syncfp, "%d %d", xp, yp) == 2)
#	Line 368 | Line 436 | register int  *xp, *yp;
436		}
437
438
439	<	int
440	<	cleanup(rstat)                  /* close rpict process and clean up */
441	<	int  rstat;
439	>	static int
440	>	cleanup(                        /* close rpict process and clean up */
441	>	int  rstat
442	>	)
443		{
444		int  status;
445
#	Line 384 | Line 453 | int  rstat;
453		}
454
455
456	<	rpiece()                        /* render picture piece by piece */
456	>	static void
457	>	rpiece(void)                    /* render picture piece by piece */
458		{
459		VIEW  pview;
460		int  xorg, yorg;
461		/* compute view parameters */
462	<	copystruct(&pview, &ourview);
462	>	pview = ourview;
463		switch (ourview.type) {
464		case VT_PER:
465	<	pview.horiz = 2.*180./PI*atan(
466	<	tan(PI/180./2.*ourview.horiz)/hmult );
467	<	pview.vert = 2.*180./PI*atan(
468	<	tan(PI/180./2.*ourview.vert)/vmult );
465	>	pview.horiz = (2.*180./PI)*atan(
466	>	tan((PI/180./2.)*ourview.horiz)/hmult );
467	>	pview.vert = (2.*180./PI)*atan(
468	>	tan((PI/180./2.)*ourview.vert)/vmult );
469		break;
470		case VT_PAR:
471		case VT_ANG:
472		pview.horiz = ourview.horiz / hmult;
473		pview.vert = ourview.vert / vmult;
474		break;
475	+	case VT_CYL:
476	+	pview.horiz = ourview.horiz / hmult;
477	+	pview.vert = (2.*180./PI)*atan(
478	+	tan((PI/180./2.)*ourview.vert)/vmult );
479	+	break;
480		case VT_HEM:
481	<	pview.horiz = 2.*180./PI*asin(
482	<	sin(PI/180./2.*ourview.horiz)/hmult );
483	<	pview.vert = 2.*180./PI*asin(
484	<	sin(PI/180./2.*ourview.vert)/vmult );
481	>	pview.horiz = (2.*180./PI)*asin(
482	>	sin((PI/180./2.)*ourview.horiz)/hmult );
483	>	pview.vert = (2.*180./PI)*asin(
484	>	sin((PI/180./2.)*ourview.vert)/vmult );
485		break;
486	+	case VT_PLS:
487	+	pview.horiz = sin((PI/180./2.)*ourview.horiz) /
488	+	(1.0 + cos((PI/180./2.)*ourview.horiz)) / hmult;
489	+	pview.horiz *= pview.horiz;
490	+	pview.horiz = (2.*180./PI)*acos((1. - pview.horiz) /
491	+	(1. + pview.horiz));
492	+	pview.vert = sin((PI/180./2.)*ourview.vert) /
493	+	(1.0 + cos((PI/180./2.)*ourview.vert)) / vmult;
494	+	pview.vert *= pview.vert;
495	+	pview.vert = (2.*180./PI)*acos((1. - pview.vert) /
496	+	(1. + pview.vert));
497	+	break;
498		default:
499		fprintf(stderr, "%s: unknown view type '-vt%c'\n",
500		progname, ourview.type);
#	Line 415 | Line 502 | rpiece()                       /* render picture piece by piece */
502		}
503		/* render each piece */
504		while (nextpiece(&xorg, &yorg)) {
505	<	pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1);
506	<	pview.voff = ourview.voff + yorg - 0.5*(vmult-1);
505	>	pview.hoff = ourview.hoff*hmult + xorg - 0.5*(hmult-1);
506	>	pview.voff = ourview.voff*vmult + yorg - 0.5*(vmult-1);
507		fputs(VIEWSTR, torp);
508		fprintview(&pview, torp);
509		putc('\n', torp);
#	Line 426 | Line 513 | rpiece()                       /* render picture piece by piece */
513		}
514
515
516	<	int
517	<	putpiece(xpos, ypos)            /* get next piece from rpict */
518	<	int  xpos, ypos;
516	>	static int
517	>	putpiece(               /* get next piece from rpict */
518	>	int     xpos,
519	>	int     ypos
520	>	)
521		{
522		struct flock  fls;
523		int  pid, status;
524		int  hr, vr;
525		register int  y;
526		/* check bounds */
527	<	if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) {
527	>	if ((xpos < 0) | (ypos < 0) | (xpos >= hmult) | (ypos >= vmult)) {
528		fprintf(stderr, "%s: requested piece (%d,%d) out of range\n",
529		progname, xpos, ypos);
530		exit(cleanup(1));
#	Line 443 | Line 532 | int  xpos, ypos;
532		/* check header from rpict */
533		guard_io();
534		getheader(fromrp, NULL, NULL);
535	<	if (!fscnresolu(&hr, &vr, fromrp) || hr != hres | vr != vres) {
535	>	if (!fscnresolu(&hr, &vr, fromrp) || (hr != hres) | (vr != vres)) {
536		fprintf(stderr, "%s: resolution mismatch from %s\n",
537		progname, rpargv[0]);
538		exit(cleanup(1));
#	Line 484 | Line 573 | int  xpos, ypos;
573		/* lock file section so NFS doesn't mess up */
574		fls.l_whence = 0;
575		fls.l_type = F_WRLCK;
576	<	fcntl(outfd, F_SETLKW, &fls);
576	>	if (fcntl(outfd, F_SETLKW, &fls) < 0)
577	>	filerr("lock");
578		#endif
579		/* write new piece to file */
580	<	if (lseek(outfd, fls.l_start, 0) == -1)
581	<	goto seekerr;
580	>	if (lseek(outfd, (off_t)fls.l_start, SEEK_SET) < 0)
581	>	filerr("seek");
582		if (hmult == 1) {
583		if (writebuf(outfd, (char *)pbuf,
584		vr*hr*sizeof(COLR)) != vr*hr*sizeof(COLR))
585	<	goto writerr;
585	>	filerr("write");
586		} else
587		for (y = 0; y < vr; y++) {
588		if (writebuf(outfd, (char *)(pbuf+y*hr),
589		hr*sizeof(COLR)) != hr*sizeof(COLR))
590	<	goto writerr;
590	>	filerr("write");
591		if (y < vr-1 && lseek(outfd,
592	<	(long)(hmult-1)*hr*sizeof(COLR),
593	<	1) == -1)
594	<	goto seekerr;
592	>	(off_t)(hmult-1)*hr*sizeof(COLR),
593	>	SEEK_CUR) < 0)
594	>	filerr("seek");
595		}
596		#if NFS
597		fls.l_type = F_UNLCK;           /* release lock */
598	<	fcntl(outfd, F_SETLKW, &fls);
598	>	if (fcntl(outfd, F_SETLKW, &fls) < 0)
599	>	filerr("lock");
600		#endif
601	+	if (verbose) {                          /* notify caller */
602	+	printf("%d %d done\n", xpos, ypos);
603	+	fflush(stdout);
604	+	}
605		if (syncfp != NULL) {                   /* record what's been done */
606		sflock(F_WRLCK);
607		fseek(syncfp, 0L, 2);           /* append index */
#	Line 515 | Line 610 | int  xpos, ypos;
610		/*** Unlock not necessary, since
611		sflock(F_UNLCK);        _exit() or nextpiece() is next ***/
612		}
518	–	if (verbose) {                          /* notify caller */
519	–	printf("%d %d done\n", xpos, ypos);
520	–	fflush(stdout);
521	–	}
613		if (pid == -1)          /* didn't fork or fork failed */
614		return(0);
615		_exit(0);               /* else exit child process (releasing locks) */
616	<	seekerr:
617	<	fprintf(stderr, "%s: seek error on file \"%s\"\n", progname, outfile);
618	<	_exit(1);
619	<	writerr:
620	<	fprintf(stderr, "%s: write error on file \"%s\"\n", progname, outfile);
616	>	}
617	>
618	>
619	>	static void
620	>	filerr(                 /* report file error and exit */
621	>	char  *t
622	>	)
623	>	{
624	>	fprintf(stderr, "%s: %s error on file \"%s\": %s\n",
625	>	progname, t, outfile, strerror(errno));
626		_exit(1);
627		}
628

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