1 |
greg |
2.1 |
/* Copyright (c) 1992 Regents of the University of California */ |
2 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
5 |
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#endif |
6 |
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7 |
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/* |
8 |
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* Generate sections of a picture. |
9 |
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*/ |
10 |
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11 |
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#include "standard.h" |
12 |
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#include <fcntl.h> |
13 |
greg |
2.6 |
#include <signal.h> |
14 |
greg |
2.1 |
#include "color.h" |
15 |
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#include "view.h" |
16 |
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#include "resolu.h" |
17 |
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|
18 |
greg |
2.12 |
#ifndef NFS |
19 |
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#define NFS 1 |
20 |
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#endif |
21 |
greg |
2.9 |
/* set the following to 0 to forgo forking */ |
22 |
|
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#ifndef MAXFORK |
23 |
greg |
2.12 |
#if NFS |
24 |
greg |
2.10 |
#define MAXFORK 3 /* allotment of duped processes */ |
25 |
greg |
2.12 |
#else |
26 |
|
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#define MAXFORK 0 |
27 |
greg |
2.9 |
#endif |
28 |
greg |
2.12 |
#endif |
29 |
greg |
2.9 |
|
30 |
greg |
2.1 |
/* rpict command */ |
31 |
greg |
2.4 |
char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", "-pa", "1"}; |
32 |
|
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int rpargc = 9; |
33 |
greg |
2.1 |
int rpd[3]; |
34 |
|
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FILE *torp, *fromrp; |
35 |
greg |
2.8 |
COLR *pbuf; |
36 |
greg |
2.1 |
/* our view parameters */ |
37 |
|
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VIEW ourview = STDVIEW; |
38 |
greg |
2.4 |
double pixaspect = 1.0; |
39 |
greg |
2.1 |
int hres = 512, vres = 512, hmult = 2, vmult = 2; |
40 |
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/* output file */ |
41 |
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char *outfile = NULL; |
42 |
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int outfd; |
43 |
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long scanorig; |
44 |
greg |
2.5 |
int syncfd = -1; /* lock file descriptor */ |
45 |
greg |
2.9 |
int nforked = 0; |
46 |
greg |
2.1 |
|
47 |
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char *progname; |
48 |
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int verbose = 0; |
49 |
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|
50 |
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extern long lseek(), ftell(); |
51 |
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|
52 |
greg |
2.6 |
int gotalrm = 0; |
53 |
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int onalrm() { gotalrm++; } |
54 |
greg |
2.1 |
|
55 |
greg |
2.6 |
|
56 |
greg |
2.1 |
main(argc, argv) |
57 |
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int argc; |
58 |
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char *argv[]; |
59 |
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{ |
60 |
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register int i, rval; |
61 |
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62 |
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progname = argv[0]; |
63 |
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for (i = 1; i < argc; i++) { |
64 |
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if (argv[i][0] == '-') |
65 |
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switch (argv[i][1]) { |
66 |
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case 'v': |
67 |
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switch (argv[i][2]) { |
68 |
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case '\0': /* verbose option */ |
69 |
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verbose = !verbose; |
70 |
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continue; |
71 |
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case 'f': /* view file */ |
72 |
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if (viewfile(argv[++i], &ourview, NULL) <= 0) { |
73 |
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fprintf(stderr, |
74 |
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"%s: not a view file\n", argv[i]); |
75 |
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exit(1); |
76 |
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} |
77 |
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continue; |
78 |
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default: /* view option? */ |
79 |
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rval = getviewopt(&ourview, argc-i, argv+i); |
80 |
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if (rval >= 0) { |
81 |
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i += rval; |
82 |
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continue; |
83 |
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} |
84 |
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break; |
85 |
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} |
86 |
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break; |
87 |
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case 'p': /* pixel aspect ratio? */ |
88 |
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if (argv[i][2] == 'a' && !argv[i][3]) |
89 |
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pixaspect = atof(argv[i+1]); |
90 |
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break; |
91 |
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case 'x': /* piece x resolution */ |
92 |
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if (!argv[i][2]) |
93 |
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hres = atoi(argv[i+1]); |
94 |
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break; |
95 |
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case 'y': /* piece y resolution */ |
96 |
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if (!argv[i][2]) |
97 |
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vres = atoi(argv[i+1]); |
98 |
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break; |
99 |
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case 'X': /* horizontal multiplier */ |
100 |
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if (argv[i][2]) |
101 |
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break; |
102 |
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hmult = atoi(argv[++i]); |
103 |
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continue; |
104 |
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case 'Y': /* vertical multiplier */ |
105 |
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if (argv[i][2]) |
106 |
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break; |
107 |
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vmult = atoi(argv[++i]); |
108 |
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continue; |
109 |
greg |
2.5 |
case 'F': /* syncronization file */ |
110 |
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if (argv[i][2]) |
111 |
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break; |
112 |
greg |
2.14 |
if ((syncfd = open(argv[++i], |
113 |
|
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O_RDWR|O_CREAT, 0666)) < 0) { |
114 |
greg |
2.5 |
fprintf(stderr, "%s: cannot open\n", |
115 |
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argv[i]); |
116 |
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exit(1); |
117 |
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} |
118 |
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continue; |
119 |
greg |
2.1 |
case 'o': /* output file */ |
120 |
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if (argv[i][2]) |
121 |
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break; |
122 |
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outfile = argv[++i]; |
123 |
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continue; |
124 |
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} |
125 |
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rpargv[rpargc++] = argv[i]; |
126 |
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} |
127 |
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rpargv[rpargc] = NULL; |
128 |
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if (outfile == NULL) { |
129 |
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fprintf(stderr, "%s: missing output file\n", argv[0]); |
130 |
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exit(1); |
131 |
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} |
132 |
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init(argc, argv); |
133 |
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rpiece(); |
134 |
greg |
2.10 |
rval = cleanup(0); |
135 |
greg |
2.1 |
exit(rval); |
136 |
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} |
137 |
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138 |
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139 |
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init(ac, av) /* set up output file and start rpict */ |
140 |
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int ac; |
141 |
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char **av; |
142 |
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{ |
143 |
greg |
2.2 |
extern char VersionID[]; |
144 |
greg |
2.1 |
char *err; |
145 |
|
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FILE *fp; |
146 |
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int hr, vr; |
147 |
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/* set up view */ |
148 |
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if ((err = setview(&ourview)) != NULL) { |
149 |
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fprintf(stderr, "%s: %s\n", progname, err); |
150 |
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exit(1); |
151 |
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} |
152 |
greg |
2.5 |
if (syncfd != -1) { |
153 |
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char buf[32]; |
154 |
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buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
155 |
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sscanf(buf, "%d %d", &hmult, &vmult); |
156 |
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} |
157 |
greg |
2.1 |
normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres); |
158 |
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/* open output file */ |
159 |
|
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if ((outfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0666)) >= 0) { |
160 |
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if ((fp = fdopen(dup(outfd), "w")) == NULL) |
161 |
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goto filerr; |
162 |
|
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printargs(ac, av, fp); /* write header */ |
163 |
greg |
2.2 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
164 |
greg |
2.1 |
fputs(VIEWSTR, fp); |
165 |
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fprintview(&ourview, fp); |
166 |
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putc('\n', fp); |
167 |
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if (pixaspect < .99 || pixaspect > 1.01) |
168 |
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fputaspect(pixaspect, fp); |
169 |
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fputformat(COLRFMT, fp); |
170 |
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putc('\n', fp); |
171 |
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fprtresolu(hres*hmult, vres*vmult, fp); |
172 |
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} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
173 |
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if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
174 |
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goto filerr; |
175 |
greg |
2.13 |
getheader(fp, NULL, NULL); /* skip header */ |
176 |
greg |
2.1 |
if (fscnresolu(&hr, &vr, fp) < 0 || /* check resolution */ |
177 |
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hr != hres*hmult || vr != vres*vmult) { |
178 |
greg |
2.8 |
fprintf(stderr, "%s: resolution mismatch on file \"%s\"\n", |
179 |
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progname, outfile); |
180 |
greg |
2.1 |
exit(1); |
181 |
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} |
182 |
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} else { |
183 |
greg |
2.8 |
fprintf(stderr, "%s: cannot open file \"%s\"\n", |
184 |
|
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progname, outfile); |
185 |
greg |
2.1 |
exit(1); |
186 |
|
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} |
187 |
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scanorig = ftell(fp); /* record position of first scanline */ |
188 |
|
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if (fclose(fp) == -1) /* done with stream i/o */ |
189 |
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goto filerr; |
190 |
greg |
2.12 |
#if NFS |
191 |
greg |
2.8 |
sync(); /* flush NFS buffers */ |
192 |
greg |
2.12 |
#endif |
193 |
greg |
2.1 |
/* start rpict process */ |
194 |
|
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if (open_process(rpd, rpargv) <= 0) { |
195 |
greg |
2.3 |
fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
196 |
greg |
2.1 |
exit(1); |
197 |
|
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} |
198 |
|
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if ((fromrp = fdopen(rpd[0], "r")) == NULL || |
199 |
|
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(torp = fdopen(rpd[1], "w")) == NULL) { |
200 |
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fprintf(stderr, "%s: cannot open stream to %s\n", |
201 |
|
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progname, rpargv[0]); |
202 |
|
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exit(1); |
203 |
|
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} |
204 |
greg |
2.8 |
if ((pbuf = (COLR *)malloc(hres*vres*sizeof(COLR))) == NULL) { |
205 |
greg |
2.1 |
fprintf(stderr, "%s: out of memory\n", progname); |
206 |
|
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exit(1); |
207 |
|
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} |
208 |
greg |
2.6 |
signal(SIGALRM, onalrm); |
209 |
greg |
2.1 |
return; |
210 |
|
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filerr: |
211 |
greg |
2.8 |
fprintf(stderr, "%s: i/o error on file \"%s\"\n", progname, outfile); |
212 |
greg |
2.1 |
exit(1); |
213 |
|
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} |
214 |
|
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|
215 |
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|
216 |
|
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int |
217 |
greg |
2.5 |
nextpiece(xp, yp) /* get next piece assignment */ |
218 |
|
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int *xp, *yp; |
219 |
|
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{ |
220 |
|
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extern char *fgets(); |
221 |
|
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struct flock fls; |
222 |
|
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char buf[64]; |
223 |
|
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|
224 |
greg |
2.6 |
if (gotalrm) /* someone wants us to quit */ |
225 |
|
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return(0); |
226 |
|
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if (syncfd != -1) { /* use sync file */ |
227 |
greg |
2.5 |
fls.l_type = F_WRLCK; /* gain exclusive access */ |
228 |
|
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fls.l_whence = 0; |
229 |
|
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fls.l_start = 0L; |
230 |
|
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fls.l_len = 0L; |
231 |
|
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fcntl(syncfd, F_SETLKW, &fls); |
232 |
|
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lseek(syncfd, 0L, 0); |
233 |
|
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buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
234 |
|
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if (sscanf(buf, "%*d %*d %d %d", xp, yp) < 2) { |
235 |
greg |
2.8 |
*xp = hmult-1; |
236 |
|
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*yp = vmult; |
237 |
|
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} |
238 |
|
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if (--(*yp) < 0) { /* decrement position */ |
239 |
greg |
2.5 |
*yp = vmult-1; |
240 |
greg |
2.8 |
if (--(*xp) < 0) { /* all done! */ |
241 |
greg |
2.5 |
close(syncfd); |
242 |
|
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return(0); |
243 |
|
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} |
244 |
|
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} |
245 |
|
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sprintf(buf, "%d %d\n%d %d\n", hmult, vmult, *xp, *yp); |
246 |
|
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lseek(syncfd, 0L, 0); /* write new position */ |
247 |
|
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write(syncfd, buf, strlen(buf)); |
248 |
|
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fls.l_type = F_UNLCK; /* release sync file */ |
249 |
|
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fcntl(syncfd, F_SETLKW, &fls); |
250 |
|
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return(1); |
251 |
|
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} |
252 |
greg |
2.6 |
if (fgets(buf, sizeof(buf), stdin) == NULL) /* use stdin */ |
253 |
greg |
2.5 |
return(0); |
254 |
|
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if (sscanf(buf, "%d %d", xp, yp) == 2) |
255 |
|
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return(1); |
256 |
|
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fprintf(stderr, "%s: input format error\n", progname); |
257 |
greg |
2.10 |
exit(cleanup(1)); |
258 |
greg |
2.5 |
} |
259 |
|
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|
260 |
|
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|
261 |
|
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int |
262 |
greg |
2.10 |
cleanup(rstat) /* close rpict process and clean up */ |
263 |
|
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int rstat; |
264 |
greg |
2.1 |
{ |
265 |
greg |
2.10 |
int status; |
266 |
greg |
2.1 |
|
267 |
greg |
2.8 |
free((char *)pbuf); |
268 |
greg |
2.1 |
fclose(torp); |
269 |
|
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fclose(fromrp); |
270 |
greg |
2.10 |
while (wait(&status) != -1) |
271 |
greg |
2.9 |
if (rstat == 0) |
272 |
|
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rstat = status>>8 & 0xff; |
273 |
|
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return(rstat); |
274 |
greg |
2.1 |
} |
275 |
|
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|
276 |
|
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|
277 |
|
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rpiece() /* render picture piece by piece */ |
278 |
|
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{ |
279 |
|
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VIEW pview; |
280 |
|
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int xorg, yorg; |
281 |
greg |
2.11 |
/* compute view parameters */ |
282 |
|
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copystruct(&pview, &ourview); |
283 |
|
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switch (ourview.type) { |
284 |
|
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case VT_PER: |
285 |
|
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pview.horiz = 2.*180./PI*atan( |
286 |
|
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tan(PI/180./2.*ourview.horiz)/hmult ); |
287 |
|
|
pview.vert = 2.*180./PI*atan( |
288 |
|
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tan(PI/180./2.*ourview.vert)/vmult ); |
289 |
|
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break; |
290 |
|
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case VT_PAR: |
291 |
|
|
case VT_ANG: |
292 |
|
|
pview.horiz = ourview.horiz / hmult; |
293 |
|
|
pview.vert = ourview.vert / vmult; |
294 |
|
|
break; |
295 |
|
|
case VT_HEM: |
296 |
|
|
pview.horiz = 2.*180./PI*asin( |
297 |
|
|
sin(PI/180./2.*ourview.horiz)/hmult ); |
298 |
|
|
pview.vert = 2.*180./PI*asin( |
299 |
|
|
sin(PI/180./2.*ourview.vert)/vmult ); |
300 |
|
|
break; |
301 |
|
|
default: |
302 |
|
|
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
303 |
|
|
progname, ourview.type); |
304 |
|
|
exit(cleanup(1)); |
305 |
|
|
} |
306 |
|
|
/* render each piece */ |
307 |
greg |
2.5 |
while (nextpiece(&xorg, &yorg)) { |
308 |
greg |
2.11 |
pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
309 |
|
|
pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
310 |
greg |
2.1 |
fputs(VIEWSTR, torp); |
311 |
|
|
fprintview(&pview, torp); |
312 |
|
|
putc('\n', torp); |
313 |
greg |
2.11 |
fflush(torp); /* assigns piece to rpict */ |
314 |
greg |
2.1 |
putpiece(xorg, yorg); /* place piece in output */ |
315 |
|
|
if (verbose) { /* notify caller */ |
316 |
greg |
2.5 |
printf("%d %d done\n", xorg, yorg); |
317 |
|
|
fflush(stdout); |
318 |
greg |
2.1 |
} |
319 |
|
|
} |
320 |
|
|
} |
321 |
|
|
|
322 |
|
|
|
323 |
greg |
2.9 |
int |
324 |
greg |
2.1 |
putpiece(xpos, ypos) /* get next piece from rpict */ |
325 |
|
|
int xpos, ypos; |
326 |
|
|
{ |
327 |
greg |
2.7 |
struct flock fls; |
328 |
greg |
2.9 |
int pid, status; |
329 |
greg |
2.1 |
int hr, vr; |
330 |
greg |
2.8 |
register int y; |
331 |
|
|
/* check bounds */ |
332 |
greg |
2.5 |
if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) { |
333 |
|
|
fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
334 |
|
|
progname, xpos, ypos); |
335 |
greg |
2.10 |
exit(cleanup(1)); |
336 |
greg |
2.5 |
} |
337 |
greg |
2.8 |
/* check header from rpict */ |
338 |
greg |
2.13 |
getheader(fromrp, NULL, NULL); |
339 |
greg |
2.11 |
if (fscnresolu(&hr, &vr, fromrp) < 0 || hr != hres | vr != vres) { |
340 |
greg |
2.3 |
fprintf(stderr, "%s: resolution mismatch from %s\n", |
341 |
|
|
progname, rpargv[0]); |
342 |
greg |
2.10 |
exit(cleanup(1)); |
343 |
greg |
2.1 |
} |
344 |
greg |
2.8 |
/* load new piece into buffer */ |
345 |
|
|
for (y = 0; y < vr; y++) |
346 |
|
|
if (freadcolrs(pbuf+y*hr, hr, fromrp) < 0) { |
347 |
greg |
2.3 |
fprintf(stderr, "%s: read error from %s\n", |
348 |
|
|
progname, rpargv[0]); |
349 |
greg |
2.10 |
exit(cleanup(1)); |
350 |
greg |
2.1 |
} |
351 |
greg |
2.9 |
#if MAXFORK |
352 |
|
|
/* fork so we don't slow rpict down */ |
353 |
|
|
if ((pid = fork()) > 0) { |
354 |
greg |
2.10 |
if (++nforked >= MAXFORK) { |
355 |
greg |
2.9 |
wait(&status); /* reap a child */ |
356 |
|
|
if (status) |
357 |
greg |
2.10 |
exit(cleanup(status>>8 & 0xff)); |
358 |
greg |
2.9 |
nforked--; |
359 |
|
|
} |
360 |
|
|
return(pid); |
361 |
|
|
} |
362 |
|
|
#else |
363 |
|
|
pid = -1; /* no forking */ |
364 |
|
|
#endif |
365 |
greg |
2.12 |
#if NFS |
366 |
greg |
2.8 |
/* lock file section so NFS doesn't mess up */ |
367 |
|
|
fls.l_whence = 0; |
368 |
|
|
fls.l_len = (long)vres*hmult*hres*sizeof(COLR); |
369 |
|
|
fls.l_start = scanorig + (vmult-1-ypos)*fls.l_len; |
370 |
|
|
fls.l_type = F_WRLCK; |
371 |
|
|
fcntl(outfd, F_SETLKW, &fls); |
372 |
greg |
2.12 |
#endif |
373 |
greg |
2.8 |
/* write new piece to file */ |
374 |
|
|
if (lseek(outfd, fls.l_start+(long)xpos*hres*sizeof(COLR), 0) == -1) |
375 |
|
|
goto seekerr; |
376 |
greg |
2.9 |
if (hmult == 1) { |
377 |
|
|
if (writebuf(outfd, (char *)pbuf, |
378 |
|
|
vr*hr*sizeof(COLR)) != vr*hr*sizeof(COLR)) |
379 |
|
|
goto writerr; |
380 |
|
|
} else |
381 |
|
|
for (y = 0; y < vr; y++) { |
382 |
|
|
if (writebuf(outfd, (char *)(pbuf+y*hr), |
383 |
|
|
hr*sizeof(COLR)) != hr*sizeof(COLR)) |
384 |
|
|
goto writerr; |
385 |
|
|
if (y < vr-1 && lseek(outfd, |
386 |
|
|
(long)(hmult-1)*hr*sizeof(COLR), |
387 |
|
|
1) == -1) |
388 |
|
|
goto seekerr; |
389 |
greg |
2.1 |
} |
390 |
greg |
2.9 |
if (pid == -1) { /* fork failed */ |
391 |
greg |
2.12 |
#if NFS |
392 |
greg |
2.9 |
fls.l_type = F_UNLCK; /* release lock */ |
393 |
|
|
fcntl(outfd, F_SETLKW, &fls); |
394 |
greg |
2.12 |
#endif |
395 |
greg |
2.9 |
return(0); |
396 |
greg |
2.1 |
} |
397 |
greg |
2.9 |
_exit(0); /* else exit child process (releasing lock) */ |
398 |
greg |
2.8 |
seekerr: |
399 |
|
|
fprintf(stderr, "%s: seek error on file \"%s\"\n", progname, outfile); |
400 |
greg |
2.9 |
_exit(1); |
401 |
|
|
writerr: |
402 |
|
|
fprintf(stderr, "%s: write error on file \"%s\"\n", progname, outfile); |
403 |
|
|
_exit(1); |
404 |
greg |
2.1 |
} |