| 1 |
/* Copyright (c) 1993 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* Generate sections of a picture. |
| 9 |
*/ |
| 10 |
|
| 11 |
#include "standard.h" |
| 12 |
#include <fcntl.h> |
| 13 |
|
| 14 |
#ifndef F_SETLKW |
| 15 |
|
| 16 |
main(argc, argv) |
| 17 |
int argc; |
| 18 |
char *argv[]; |
| 19 |
{ |
| 20 |
fprintf(stderr, "%s: no NFS lock manager on this machine\n", argv[0]); |
| 21 |
exit(1); |
| 22 |
} |
| 23 |
|
| 24 |
#else |
| 25 |
|
| 26 |
#include <signal.h> |
| 27 |
#include "color.h" |
| 28 |
#include "view.h" |
| 29 |
#include "resolu.h" |
| 30 |
|
| 31 |
#ifndef NFS |
| 32 |
#define NFS 1 |
| 33 |
#endif |
| 34 |
/* set the following to 0 to forgo forking */ |
| 35 |
#ifndef MAXFORK |
| 36 |
#if NFS |
| 37 |
#define MAXFORK 3 /* allotment of duped processes */ |
| 38 |
#else |
| 39 |
#define MAXFORK 0 |
| 40 |
#endif |
| 41 |
#endif |
| 42 |
/* protection from SYSV signals(!) */ |
| 43 |
#if defined(sgi) || defined(hpux) |
| 44 |
#define guard_io() sighold(SIGALRM) |
| 45 |
#define unguard() sigrelse(SIGALRM) |
| 46 |
#endif |
| 47 |
#ifndef guard_io |
| 48 |
#define guard_io() 0 |
| 49 |
#define unguard() 0 |
| 50 |
#endif |
| 51 |
/* rpict command */ |
| 52 |
char *rpargv[128] = {"rpict", "-S", "1"}; |
| 53 |
int rpargc = 3; |
| 54 |
int rpd[3]; |
| 55 |
FILE *torp, *fromrp; |
| 56 |
COLR *pbuf; |
| 57 |
/* our view parameters */ |
| 58 |
VIEW ourview = STDVIEW; |
| 59 |
double pixaspect = 1.0; |
| 60 |
int hres = 1024, vres = 1024, hmult = 4, vmult = 4; |
| 61 |
/* output file */ |
| 62 |
char *outfile = NULL; |
| 63 |
int outfd; |
| 64 |
long scanorig; |
| 65 |
int syncfd = -1; /* lock file descriptor */ |
| 66 |
int nforked = 0; |
| 67 |
|
| 68 |
char *progname; |
| 69 |
int verbose = 0; |
| 70 |
|
| 71 |
extern long lseek(), ftell(); |
| 72 |
|
| 73 |
int gotalrm = 0; |
| 74 |
int onalrm() { gotalrm++; } |
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|
| 76 |
|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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register int i, rval; |
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|
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progname = argv[0]; |
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for (i = 1; i < argc; i++) { |
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/* expand arguments */ |
| 86 |
while (rval = expandarg(&argc, &argv, i)) |
| 87 |
if (rval < 0) { |
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fprintf(stderr, "%s: cannot expand '%s'", |
| 89 |
argv[0], argv[i]); |
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exit(1); |
| 91 |
} |
| 92 |
if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'v': |
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switch (argv[i][2]) { |
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case '\0': /* verbose option */ |
| 97 |
verbose = !verbose; |
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continue; |
| 99 |
case 'f': /* view file */ |
| 100 |
if (viewfile(argv[++i], &ourview, NULL) <= 0) { |
| 101 |
fprintf(stderr, |
| 102 |
"%s: not a view file\n", argv[i]); |
| 103 |
exit(1); |
| 104 |
} |
| 105 |
continue; |
| 106 |
default: /* view option? */ |
| 107 |
rval = getviewopt(&ourview, argc-i, argv+i); |
| 108 |
if (rval >= 0) { |
| 109 |
i += rval; |
| 110 |
continue; |
| 111 |
} |
| 112 |
break; |
| 113 |
} |
| 114 |
break; |
| 115 |
case 'p': /* pixel aspect ratio? */ |
| 116 |
if (argv[i][2] != 'a' || argv[i][3]) |
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break; |
| 118 |
pixaspect = atof(argv[i+1]); |
| 119 |
continue; |
| 120 |
case 'x': /* overall x resolution */ |
| 121 |
if (argv[i][2]) |
| 122 |
break; |
| 123 |
hres = atoi(argv[++i]); |
| 124 |
continue; |
| 125 |
case 'y': /* overall y resolution */ |
| 126 |
if (argv[i][2]) |
| 127 |
break; |
| 128 |
vres = atoi(argv[++i]); |
| 129 |
continue; |
| 130 |
case 'X': /* horizontal multiplier */ |
| 131 |
if (argv[i][2]) |
| 132 |
break; |
| 133 |
hmult = atoi(argv[++i]); |
| 134 |
continue; |
| 135 |
case 'Y': /* vertical multiplier */ |
| 136 |
if (argv[i][2]) |
| 137 |
break; |
| 138 |
vmult = atoi(argv[++i]); |
| 139 |
continue; |
| 140 |
case 'F': /* syncronization file */ |
| 141 |
if (argv[i][2]) |
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break; |
| 143 |
if ((syncfd = open(argv[++i], |
| 144 |
O_RDWR|O_CREAT, 0666)) < 0) { |
| 145 |
fprintf(stderr, "%s: cannot open\n", |
| 146 |
argv[i]); |
| 147 |
exit(1); |
| 148 |
} |
| 149 |
continue; |
| 150 |
case 'z': /* z-file ist verbotten */ |
| 151 |
fprintf(stderr, "%s: -z option not allowed\n", |
| 152 |
argv[0]); |
| 153 |
exit(1); |
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case 'o': /* output file */ |
| 155 |
if (argv[i][2]) |
| 156 |
break; |
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outfile = argv[++i]; |
| 158 |
continue; |
| 159 |
} else if (i >= argc-1) |
| 160 |
break; |
| 161 |
rpargv[rpargc++] = argv[i]; |
| 162 |
} |
| 163 |
if (i >= argc) { |
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fprintf(stderr, "%s: missing octree argument\n", argv[0]); |
| 165 |
exit(1); |
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} |
| 167 |
if (outfile == NULL) { |
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fprintf(stderr, "%s: missing output file\n", argv[0]); |
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exit(1); |
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} |
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init(argc, argv); |
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rpiece(); |
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exit(cleanup(0)); |
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} |
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|
| 176 |
|
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init(ac, av) /* set up output file and start rpict */ |
| 178 |
int ac; |
| 179 |
char **av; |
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{ |
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static char hrbuf[16], vrbuf[16]; |
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extern char VersionID[]; |
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char *err; |
| 184 |
FILE *fp; |
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int hr, vr; |
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/* set up view */ |
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if ((err = setview(&ourview)) != NULL) { |
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fprintf(stderr, "%s: %s\n", progname, err); |
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exit(1); |
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} |
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if (syncfd != -1) { |
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char buf[32]; |
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buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
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sscanf(buf, "%d %d", &hmult, &vmult); |
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} |
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/* compute piece size */ |
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hres /= hmult; |
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vres /= vmult; |
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normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres); |
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sprintf(hrbuf, "%d", hres); |
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rpargv[rpargc++] = "-x"; rpargv[rpargc++] = hrbuf; |
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sprintf(vrbuf, "%d", vres); |
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rpargv[rpargc++] = "-y"; rpargv[rpargc++] = vrbuf; |
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rpargv[rpargc++] = "-pa"; rpargv[rpargc++] = "0"; |
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rpargv[rpargc++] = av[ac-1]; |
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rpargv[rpargc] = NULL; |
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/* open output file */ |
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if ((outfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0666)) >= 0) { |
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if ((fp = fdopen(dup(outfd), "w")) == NULL) |
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goto filerr; |
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printargs(ac, av, fp); /* write header */ |
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fprintf(fp, "SOFTWARE= %s\n", VersionID); |
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fputs(VIEWSTR, fp); |
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fprintview(&ourview, fp); |
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putc('\n', fp); |
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if (pixaspect < .99 || pixaspect > 1.01) |
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fputaspect(pixaspect, fp); |
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fputformat(COLRFMT, fp); |
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putc('\n', fp); |
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fprtresolu(hres*hmult, vres*vmult, fp); |
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} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
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if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
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goto filerr; |
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getheader(fp, NULL, NULL); /* skip header */ |
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if (!fscnresolu(&hr, &vr, fp) || /* check resolution */ |
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hr != hres*hmult || vr != vres*vmult) { |
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fprintf(stderr, "%s: resolution mismatch on file \"%s\"\n", |
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progname, outfile); |
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exit(1); |
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} |
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} else { |
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fprintf(stderr, "%s: cannot open file \"%s\"\n", |
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progname, outfile); |
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exit(1); |
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} |
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scanorig = ftell(fp); /* record position of first scanline */ |
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if (fclose(fp) == -1) /* done with stream i/o */ |
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goto filerr; |
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#if NFS |
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sync(); /* flush NFS buffers */ |
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#endif |
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/* start rpict process */ |
| 243 |
if (open_process(rpd, rpargv) <= 0) { |
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fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
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exit(1); |
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} |
| 247 |
if ((fromrp = fdopen(rpd[0], "r")) == NULL || |
| 248 |
(torp = fdopen(rpd[1], "w")) == NULL) { |
| 249 |
fprintf(stderr, "%s: cannot open stream to %s\n", |
| 250 |
progname, rpargv[0]); |
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exit(1); |
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} |
| 253 |
if ((pbuf = (COLR *)bmalloc(hres*vres*sizeof(COLR))) == NULL) { |
| 254 |
fprintf(stderr, "%s: out of memory\n", progname); |
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exit(1); |
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} |
| 257 |
signal(SIGALRM, onalrm); |
| 258 |
return; |
| 259 |
filerr: |
| 260 |
fprintf(stderr, "%s: i/o error on file \"%s\"\n", progname, outfile); |
| 261 |
exit(1); |
| 262 |
} |
| 263 |
|
| 264 |
|
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int |
| 266 |
nextpiece(xp, yp) /* get next piece assignment */ |
| 267 |
int *xp, *yp; |
| 268 |
{ |
| 269 |
struct flock fls; |
| 270 |
char buf[64]; |
| 271 |
|
| 272 |
if (gotalrm) /* someone wants us to quit */ |
| 273 |
return(0); |
| 274 |
if (syncfd != -1) { /* use sync file */ |
| 275 |
fls.l_type = F_WRLCK; /* gain exclusive access */ |
| 276 |
fls.l_whence = 0; |
| 277 |
fls.l_start = 0L; |
| 278 |
fls.l_len = 0L; |
| 279 |
fcntl(syncfd, F_SETLKW, &fls); |
| 280 |
lseek(syncfd, 0L, 0); |
| 281 |
buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
| 282 |
if (sscanf(buf, "%*d %*d %d %d", xp, yp) < 2) { |
| 283 |
*xp = hmult-1; |
| 284 |
*yp = vmult; |
| 285 |
} |
| 286 |
if (--(*yp) < 0) { /* decrement position */ |
| 287 |
*yp = vmult-1; |
| 288 |
if (--(*xp) < 0) { /* all done! */ |
| 289 |
close(syncfd); |
| 290 |
return(0); |
| 291 |
} |
| 292 |
} |
| 293 |
sprintf(buf, "%4d %4d\n%4d %4d\n", hmult, vmult, *xp, *yp); |
| 294 |
lseek(syncfd, 0L, 0); /* write new position */ |
| 295 |
write(syncfd, buf, strlen(buf)); |
| 296 |
fls.l_type = F_UNLCK; /* release sync file */ |
| 297 |
fcntl(syncfd, F_SETLKW, &fls); |
| 298 |
return(1); |
| 299 |
} |
| 300 |
if (fgets(buf, sizeof(buf), stdin) == NULL) /* use stdin */ |
| 301 |
return(0); |
| 302 |
if (sscanf(buf, "%d %d", xp, yp) == 2) |
| 303 |
return(1); |
| 304 |
fprintf(stderr, "%s: input format error\n", progname); |
| 305 |
exit(cleanup(1)); |
| 306 |
} |
| 307 |
|
| 308 |
|
| 309 |
int |
| 310 |
cleanup(rstat) /* close rpict process and clean up */ |
| 311 |
int rstat; |
| 312 |
{ |
| 313 |
int status; |
| 314 |
|
| 315 |
bfree((char *)pbuf, hres*vres*sizeof(COLR)); |
| 316 |
fclose(torp); |
| 317 |
fclose(fromrp); |
| 318 |
while (wait(&status) != -1) |
| 319 |
if (rstat == 0) |
| 320 |
rstat = status>>8 & 0xff; |
| 321 |
return(rstat); |
| 322 |
} |
| 323 |
|
| 324 |
|
| 325 |
rpiece() /* render picture piece by piece */ |
| 326 |
{ |
| 327 |
VIEW pview; |
| 328 |
int xorg, yorg; |
| 329 |
/* compute view parameters */ |
| 330 |
copystruct(&pview, &ourview); |
| 331 |
switch (ourview.type) { |
| 332 |
case VT_PER: |
| 333 |
pview.horiz = 2.*180./PI*atan( |
| 334 |
tan(PI/180./2.*ourview.horiz)/hmult ); |
| 335 |
pview.vert = 2.*180./PI*atan( |
| 336 |
tan(PI/180./2.*ourview.vert)/vmult ); |
| 337 |
break; |
| 338 |
case VT_PAR: |
| 339 |
case VT_ANG: |
| 340 |
pview.horiz = ourview.horiz / hmult; |
| 341 |
pview.vert = ourview.vert / vmult; |
| 342 |
break; |
| 343 |
case VT_HEM: |
| 344 |
pview.horiz = 2.*180./PI*asin( |
| 345 |
sin(PI/180./2.*ourview.horiz)/hmult ); |
| 346 |
pview.vert = 2.*180./PI*asin( |
| 347 |
sin(PI/180./2.*ourview.vert)/vmult ); |
| 348 |
break; |
| 349 |
default: |
| 350 |
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
| 351 |
progname, ourview.type); |
| 352 |
exit(cleanup(1)); |
| 353 |
} |
| 354 |
/* render each piece */ |
| 355 |
while (nextpiece(&xorg, &yorg)) { |
| 356 |
pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
| 357 |
pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
| 358 |
fputs(VIEWSTR, torp); |
| 359 |
fprintview(&pview, torp); |
| 360 |
putc('\n', torp); |
| 361 |
fflush(torp); /* assigns piece to rpict */ |
| 362 |
putpiece(xorg, yorg); /* place piece in output */ |
| 363 |
} |
| 364 |
} |
| 365 |
|
| 366 |
|
| 367 |
int |
| 368 |
putpiece(xpos, ypos) /* get next piece from rpict */ |
| 369 |
int xpos, ypos; |
| 370 |
{ |
| 371 |
struct flock fls; |
| 372 |
int pid, status; |
| 373 |
int hr, vr; |
| 374 |
register int y; |
| 375 |
/* check bounds */ |
| 376 |
if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) { |
| 377 |
fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
| 378 |
progname, xpos, ypos); |
| 379 |
exit(cleanup(1)); |
| 380 |
} |
| 381 |
/* check header from rpict */ |
| 382 |
guard_io(); |
| 383 |
getheader(fromrp, NULL, NULL); |
| 384 |
if (!fscnresolu(&hr, &vr, fromrp) || hr != hres | vr != vres) { |
| 385 |
fprintf(stderr, "%s: resolution mismatch from %s\n", |
| 386 |
progname, rpargv[0]); |
| 387 |
exit(cleanup(1)); |
| 388 |
} |
| 389 |
unguard(); |
| 390 |
/* load new piece into buffer */ |
| 391 |
for (y = 0; y < vr; y++) { |
| 392 |
guard_io(); |
| 393 |
if (freadcolrs(pbuf+y*hr, hr, fromrp) < 0) { |
| 394 |
fprintf(stderr, "%s: read error from %s\n", |
| 395 |
progname, rpargv[0]); |
| 396 |
exit(cleanup(1)); |
| 397 |
} |
| 398 |
unguard(); |
| 399 |
} |
| 400 |
#if MAXFORK |
| 401 |
/* fork so we don't slow rpict down */ |
| 402 |
if ((pid = fork()) > 0) { |
| 403 |
if (++nforked >= MAXFORK) { |
| 404 |
wait(&status); /* reap a child */ |
| 405 |
if (status) |
| 406 |
exit(cleanup(status>>8 & 0xff)); |
| 407 |
nforked--; |
| 408 |
} |
| 409 |
return(pid); |
| 410 |
} |
| 411 |
#else |
| 412 |
pid = -1; /* no forking */ |
| 413 |
#endif |
| 414 |
fls.l_start = scanorig + |
| 415 |
((long)(vmult-1-ypos)*vres*hmult+xpos)*hres*sizeof(COLR); |
| 416 |
#if NFS |
| 417 |
fls.l_len = ((long)(vres-1)*hmult+1)*hres*sizeof(COLR); |
| 418 |
/* lock file section so NFS doesn't mess up */ |
| 419 |
fls.l_whence = 0; |
| 420 |
fls.l_type = F_WRLCK; |
| 421 |
fcntl(outfd, F_SETLKW, &fls); |
| 422 |
#endif |
| 423 |
/* write new piece to file */ |
| 424 |
if (lseek(outfd, fls.l_start, 0) == -1) |
| 425 |
goto seekerr; |
| 426 |
if (hmult == 1) { |
| 427 |
if (writebuf(outfd, (char *)pbuf, |
| 428 |
vr*hr*sizeof(COLR)) != vr*hr*sizeof(COLR)) |
| 429 |
goto writerr; |
| 430 |
} else |
| 431 |
for (y = 0; y < vr; y++) { |
| 432 |
if (writebuf(outfd, (char *)(pbuf+y*hr), |
| 433 |
hr*sizeof(COLR)) != hr*sizeof(COLR)) |
| 434 |
goto writerr; |
| 435 |
if (y < vr-1 && lseek(outfd, |
| 436 |
(long)(hmult-1)*hr*sizeof(COLR), |
| 437 |
1) == -1) |
| 438 |
goto seekerr; |
| 439 |
} |
| 440 |
if (verbose) { /* notify caller */ |
| 441 |
printf("%d %d done\n", xpos, ypos); |
| 442 |
fflush(stdout); |
| 443 |
} |
| 444 |
if (pid == -1) { /* didn't fork or fork failed */ |
| 445 |
#if NFS |
| 446 |
fls.l_type = F_UNLCK; /* release lock */ |
| 447 |
fcntl(outfd, F_SETLKW, &fls); |
| 448 |
#endif |
| 449 |
return(0); |
| 450 |
} |
| 451 |
_exit(0); /* else exit child process (releasing lock) */ |
| 452 |
seekerr: |
| 453 |
fprintf(stderr, "%s: seek error on file \"%s\"\n", progname, outfile); |
| 454 |
_exit(1); |
| 455 |
writerr: |
| 456 |
fprintf(stderr, "%s: write error on file \"%s\"\n", progname, outfile); |
| 457 |
_exit(1); |
| 458 |
} |
| 459 |
|
| 460 |
#endif |
