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/* Copyright (c) 1992 Regents of the University of California */ |
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/* Copyright (c) 1993 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#include "standard.h" |
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#include <fcntl.h> |
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|
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#ifndef F_SETLKW |
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|
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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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fprintf(stderr, "%s: no NFS lock manager on this machine\n", argv[0]); |
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exit(1); |
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} |
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|
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#else |
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|
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#include <signal.h> |
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#include "color.h" |
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#include "view.h" |
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#include "resolu.h" |
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|
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#ifndef NFS |
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#define NFS 1 |
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#endif |
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/* set the following to 0 to forgo forking */ |
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#ifndef MAXFORK |
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#define MAXFORK 2 /* max. unreaped child processes */ |
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#if NFS |
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#define MAXFORK 3 /* allotment of duped processes */ |
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#else |
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#define MAXFORK 0 |
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#endif |
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|
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#endif |
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/* protection from SYSV signals(!) */ |
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#if defined(sgi) || defined(hpux) |
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#define guard_io() sighold(SIGALRM) |
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#define unguard() sigrelse(SIGALRM) |
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#endif |
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#ifndef guard_io |
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#define guard_io() 0 |
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#define unguard() 0 |
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#endif |
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/* rpict command */ |
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char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", "-pa", "1"}; |
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int rpargc = 9; |
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case 'F': /* syncronization file */ |
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if (argv[i][2]) |
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break; |
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if ((syncfd = open(argv[++i], O_RDWR)) < 0) { |
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if ((syncfd = open(argv[++i], |
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O_RDWR|O_CREAT, 0666)) < 0) { |
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fprintf(stderr, "%s: cannot open\n", |
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argv[i]); |
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exit(1); |
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} |
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continue; |
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case 'z': /* z-file ist verbotten */ |
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fprintf(stderr, "%s: -z option not allowed\n", |
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argv[0]); |
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exit(1); |
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case 'o': /* output file */ |
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if (argv[i][2]) |
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break; |
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} |
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init(argc, argv); |
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rpiece(); |
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rval = cleanup(); |
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exit(rval); |
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exit(cleanup(0)); |
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} |
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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); /* skip header */ |
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if (fscnresolu(&hr, &vr, fp) < 0 || /* check resolution */ |
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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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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 */ |
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if (open_process(rpd, rpargv) <= 0) { |
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fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
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nextpiece(xp, yp) /* get next piece assignment */ |
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int *xp, *yp; |
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{ |
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extern char *fgets(); |
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struct flock fls; |
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char buf[64]; |
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return(0); |
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} |
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} |
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sprintf(buf, "%d %d\n%d %d\n", hmult, vmult, *xp, *yp); |
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sprintf(buf, "%4d %4d\n%4d %4d\n", hmult, vmult, *xp, *yp); |
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lseek(syncfd, 0L, 0); /* write new position */ |
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write(syncfd, buf, strlen(buf)); |
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fls.l_type = F_UNLCK; /* release sync file */ |
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if (sscanf(buf, "%d %d", xp, yp) == 2) |
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return(1); |
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fprintf(stderr, "%s: input format error\n", progname); |
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exit(1); |
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exit(cleanup(1)); |
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} |
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int |
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cleanup() /* close rpict process and clean up */ |
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cleanup(rstat) /* close rpict process and clean up */ |
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int rstat; |
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{ |
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register int pid; |
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int status, rstat = 0; |
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int status; |
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|
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free((char *)pbuf); |
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fclose(torp); |
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fclose(fromrp); |
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while ((pid = wait(&status)) != -1) |
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while (wait(&status) != -1) |
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if (rstat == 0) |
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rstat = status>>8 & 0xff; |
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return(rstat); |
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{ |
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VIEW pview; |
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int xorg, yorg; |
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|
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/* compute view parameters */ |
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copystruct(&pview, &ourview); |
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switch (ourview.type) { |
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case VT_PER: |
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pview.horiz = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.horiz)/hmult ); |
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pview.vert = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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case VT_PAR: |
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case VT_ANG: |
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pview.horiz = ourview.horiz / hmult; |
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pview.vert = ourview.vert / vmult; |
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break; |
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case VT_HEM: |
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pview.horiz = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.horiz)/hmult ); |
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pview.vert = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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default: |
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fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
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progname, ourview.type); |
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exit(cleanup(1)); |
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} |
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/* render each piece */ |
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while (nextpiece(&xorg, &yorg)) { |
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copystruct(&pview, &ourview); /* compute view for piece */ |
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switch (ourview.type) { |
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case VT_PER: |
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pview.horiz = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.horiz)/hmult ); |
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pview.vert = 2.*180./PI*atan( |
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tan(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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case VT_PAR: |
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case VT_ANG: |
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pview.horiz = ourview.horiz / hmult; |
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pview.vert = ourview.vert / vmult; |
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break; |
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case VT_HEM: |
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pview.horiz = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.horiz)/hmult ); |
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pview.vert = 2.*180./PI*asin( |
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sin(PI/180./2.*ourview.vert)/vmult ); |
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break; |
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default: |
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fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
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progname, ourview.type); |
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exit(1); |
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} |
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pview.hoff += xorg - 0.5*(hmult-1); |
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pview.voff += yorg - 0.5*(vmult-1); |
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pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
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pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
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fputs(VIEWSTR, torp); |
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fprintview(&pview, torp); |
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putc('\n', torp); |
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fflush(torp); /* assign piece to rpict */ |
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fflush(torp); /* assigns piece to rpict */ |
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putpiece(xorg, yorg); /* place piece in output */ |
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if (verbose) { /* notify caller */ |
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printf("%d %d done\n", xorg, yorg); |
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fflush(stdout); |
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} |
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} |
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} |
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if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) { |
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fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
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progname, xpos, ypos); |
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exit(1); |
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exit(cleanup(1)); |
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} |
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/* check header from rpict */ |
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getheader(fromrp, NULL); |
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if (fscnresolu(&hr, &vr, fromrp) < 0 || hr != hres || vr != vres) { |
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guard_io(); |
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getheader(fromrp, NULL, NULL); |
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if (!fscnresolu(&hr, &vr, fromrp) || hr != hres | vr != vres) { |
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fprintf(stderr, "%s: resolution mismatch from %s\n", |
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progname, rpargv[0]); |
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exit(1); |
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exit(cleanup(1)); |
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} |
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unguard(); |
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/* load new piece into buffer */ |
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for (y = 0; y < vr; y++) |
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for (y = 0; y < vr; y++) { |
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guard_io(); |
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if (freadcolrs(pbuf+y*hr, hr, fromrp) < 0) { |
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fprintf(stderr, "%s: read error from %s\n", |
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progname, rpargv[0]); |
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exit(1); |
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exit(cleanup(1)); |
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} |
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unguard(); |
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} |
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#if MAXFORK |
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/* fork so we don't slow rpict down */ |
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if ((pid = fork()) > 0) { |
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if (++nforked > MAXFORK) { |
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if (++nforked >= MAXFORK) { |
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wait(&status); /* reap a child */ |
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if (status) |
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exit(status>>8 & 0xff); |
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exit(cleanup(status>>8 & 0xff)); |
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nforked--; |
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} |
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return(pid); |
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#else |
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pid = -1; /* no forking */ |
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#endif |
389 |
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fls.l_start = scanorig + |
390 |
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((long)(vmult-1-ypos)*vres*hmult+xpos)*hres*sizeof(COLR); |
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#if NFS |
392 |
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fls.l_len = ((long)(vres-1)*hmult+1)*hres*sizeof(COLR); |
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/* lock file section so NFS doesn't mess up */ |
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fls.l_whence = 0; |
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fls.l_len = (long)vres*hmult*hres*sizeof(COLR); |
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fls.l_start = scanorig + (vmult-1-ypos)*fls.l_len; |
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fls.l_type = F_WRLCK; |
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fcntl(outfd, F_SETLKW, &fls); |
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#endif |
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/* write new piece to file */ |
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if (lseek(outfd, fls.l_start+(long)xpos*hres*sizeof(COLR), 0) == -1) |
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if (lseek(outfd, fls.l_start, 0) == -1) |
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goto seekerr; |
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if (hmult == 1) { |
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if (writebuf(outfd, (char *)pbuf, |
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1) == -1) |
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goto seekerr; |
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} |
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if (pid == -1) { /* fork failed */ |
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if (verbose) { /* notify caller */ |
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printf("%d %d done\n", xpos, ypos); |
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fflush(stdout); |
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} |
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if (pid == -1) { /* didn't fork or fork failed */ |
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#if NFS |
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fls.l_type = F_UNLCK; /* release lock */ |
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fcntl(outfd, F_SETLKW, &fls); |
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#endif |
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return(0); |
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} |
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_exit(0); /* else exit child process (releasing lock) */ |
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fprintf(stderr, "%s: write error on file \"%s\"\n", progname, outfile); |
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_exit(1); |
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} |
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|
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#endif |