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"; |
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#endif |
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7 |
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/* |
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* Generate sections of a picture. |
9 |
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*/ |
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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 |
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/* rpict command */ |
19 |
greg |
2.4 |
char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", "-pa", "1"}; |
20 |
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int rpargc = 9; |
21 |
greg |
2.1 |
int rpd[3]; |
22 |
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FILE *torp, *fromrp; |
23 |
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COLR *scanline; |
24 |
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/* our view parameters */ |
25 |
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VIEW ourview = STDVIEW; |
26 |
greg |
2.4 |
double pixaspect = 1.0; |
27 |
greg |
2.1 |
int hres = 512, vres = 512, hmult = 2, vmult = 2; |
28 |
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/* output file */ |
29 |
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char *outfile = NULL; |
30 |
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int outfd; |
31 |
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long scanorig; |
32 |
greg |
2.5 |
int syncfd = -1; /* lock file descriptor */ |
33 |
greg |
2.1 |
|
34 |
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char *progname; |
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int verbose = 0; |
36 |
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37 |
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extern long lseek(), ftell(); |
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39 |
greg |
2.6 |
int gotalrm = 0; |
40 |
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int onalrm() { gotalrm++; } |
41 |
greg |
2.1 |
|
42 |
greg |
2.6 |
|
43 |
greg |
2.1 |
main(argc, argv) |
44 |
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int argc; |
45 |
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char *argv[]; |
46 |
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{ |
47 |
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register int i, rval; |
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49 |
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progname = argv[0]; |
50 |
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for (i = 1; i < argc; i++) { |
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if (argv[i][0] == '-') |
52 |
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switch (argv[i][1]) { |
53 |
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case 'v': |
54 |
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switch (argv[i][2]) { |
55 |
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case '\0': /* verbose option */ |
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verbose = !verbose; |
57 |
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continue; |
58 |
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case 'f': /* view file */ |
59 |
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if (viewfile(argv[++i], &ourview, NULL) <= 0) { |
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fprintf(stderr, |
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"%s: not a view file\n", argv[i]); |
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exit(1); |
63 |
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} |
64 |
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continue; |
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default: /* view option? */ |
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rval = getviewopt(&ourview, argc-i, argv+i); |
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if (rval >= 0) { |
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i += rval; |
69 |
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continue; |
70 |
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} |
71 |
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break; |
72 |
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} |
73 |
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break; |
74 |
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case 'p': /* pixel aspect ratio? */ |
75 |
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if (argv[i][2] == 'a' && !argv[i][3]) |
76 |
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pixaspect = atof(argv[i+1]); |
77 |
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break; |
78 |
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case 'x': /* piece x resolution */ |
79 |
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if (!argv[i][2]) |
80 |
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hres = atoi(argv[i+1]); |
81 |
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break; |
82 |
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case 'y': /* piece y resolution */ |
83 |
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if (!argv[i][2]) |
84 |
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vres = atoi(argv[i+1]); |
85 |
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break; |
86 |
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case 'X': /* horizontal multiplier */ |
87 |
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if (argv[i][2]) |
88 |
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break; |
89 |
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hmult = atoi(argv[++i]); |
90 |
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continue; |
91 |
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case 'Y': /* vertical multiplier */ |
92 |
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if (argv[i][2]) |
93 |
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break; |
94 |
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vmult = atoi(argv[++i]); |
95 |
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continue; |
96 |
greg |
2.5 |
case 'F': /* syncronization file */ |
97 |
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if (argv[i][2]) |
98 |
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break; |
99 |
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if ((syncfd = open(argv[++i], O_RDWR)) < 0) { |
100 |
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fprintf(stderr, "%s: cannot open\n", |
101 |
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argv[i]); |
102 |
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exit(1); |
103 |
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} |
104 |
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continue; |
105 |
greg |
2.1 |
case 'o': /* output file */ |
106 |
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if (argv[i][2]) |
107 |
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break; |
108 |
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outfile = argv[++i]; |
109 |
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continue; |
110 |
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} |
111 |
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rpargv[rpargc++] = argv[i]; |
112 |
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} |
113 |
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rpargv[rpargc] = NULL; |
114 |
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if (outfile == NULL) { |
115 |
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fprintf(stderr, "%s: missing output file\n", argv[0]); |
116 |
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exit(1); |
117 |
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} |
118 |
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init(argc, argv); |
119 |
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rpiece(); |
120 |
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rval = cleanup(); |
121 |
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exit(rval); |
122 |
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} |
123 |
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124 |
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125 |
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init(ac, av) /* set up output file and start rpict */ |
126 |
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int ac; |
127 |
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char **av; |
128 |
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{ |
129 |
greg |
2.2 |
extern char VersionID[]; |
130 |
greg |
2.1 |
char *err; |
131 |
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FILE *fp; |
132 |
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int hr, vr; |
133 |
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/* set up view */ |
134 |
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if ((err = setview(&ourview)) != NULL) { |
135 |
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fprintf(stderr, "%s: %s\n", progname, err); |
136 |
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exit(1); |
137 |
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} |
138 |
greg |
2.5 |
if (syncfd != -1) { |
139 |
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char buf[32]; |
140 |
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buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
141 |
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sscanf(buf, "%d %d", &hmult, &vmult); |
142 |
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} |
143 |
greg |
2.1 |
normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres); |
144 |
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/* open output file */ |
145 |
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if ((outfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0666)) >= 0) { |
146 |
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if ((fp = fdopen(dup(outfd), "w")) == NULL) |
147 |
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goto filerr; |
148 |
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printargs(ac, av, fp); /* write header */ |
149 |
greg |
2.2 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
150 |
greg |
2.1 |
fputs(VIEWSTR, fp); |
151 |
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fprintview(&ourview, fp); |
152 |
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putc('\n', fp); |
153 |
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if (pixaspect < .99 || pixaspect > 1.01) |
154 |
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fputaspect(pixaspect, fp); |
155 |
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fputformat(COLRFMT, fp); |
156 |
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putc('\n', fp); |
157 |
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fprtresolu(hres*hmult, vres*vmult, fp); |
158 |
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} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
159 |
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if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
160 |
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goto filerr; |
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getheader(fp, NULL); /* skip header */ |
162 |
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if (fscnresolu(&hr, &vr, fp) < 0 || /* check resolution */ |
163 |
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hr != hres*hmult || vr != vres*vmult) { |
164 |
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fprintf(stderr, "%s: picture resolution mismatch\n", |
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outfile); |
166 |
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exit(1); |
167 |
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} |
168 |
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} else { |
169 |
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fprintf(stderr, "%s: cannot open\n", outfile); |
170 |
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exit(1); |
171 |
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} |
172 |
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scanorig = ftell(fp); /* record position of first scanline */ |
173 |
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if (fclose(fp) == -1) /* done with stream i/o */ |
174 |
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goto filerr; |
175 |
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/* start rpict process */ |
176 |
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if (open_process(rpd, rpargv) <= 0) { |
177 |
greg |
2.3 |
fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
178 |
greg |
2.1 |
exit(1); |
179 |
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} |
180 |
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if ((fromrp = fdopen(rpd[0], "r")) == NULL || |
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(torp = fdopen(rpd[1], "w")) == NULL) { |
182 |
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fprintf(stderr, "%s: cannot open stream to %s\n", |
183 |
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progname, rpargv[0]); |
184 |
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exit(1); |
185 |
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} |
186 |
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if ((scanline = (COLR *)malloc(hres*sizeof(COLR))) == NULL) { |
187 |
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fprintf(stderr, "%s: out of memory\n", progname); |
188 |
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exit(1); |
189 |
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} |
190 |
greg |
2.6 |
signal(SIGALRM, onalrm); |
191 |
greg |
2.1 |
return; |
192 |
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filerr: |
193 |
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fprintf(stderr, "%s: file i/o error\n", outfile); |
194 |
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exit(1); |
195 |
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} |
196 |
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197 |
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198 |
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int |
199 |
greg |
2.5 |
nextpiece(xp, yp) /* get next piece assignment */ |
200 |
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int *xp, *yp; |
201 |
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{ |
202 |
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extern char *fgets(); |
203 |
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struct flock fls; |
204 |
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char buf[64]; |
205 |
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206 |
greg |
2.6 |
if (gotalrm) /* someone wants us to quit */ |
207 |
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return(0); |
208 |
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if (syncfd != -1) { /* use sync file */ |
209 |
greg |
2.5 |
fls.l_type = F_WRLCK; /* gain exclusive access */ |
210 |
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fls.l_whence = 0; |
211 |
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fls.l_start = 0L; |
212 |
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fls.l_len = 0L; |
213 |
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fcntl(syncfd, F_SETLKW, &fls); |
214 |
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lseek(syncfd, 0L, 0); |
215 |
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buf[read(syncfd, buf, sizeof(buf)-1)] = '\0'; |
216 |
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if (sscanf(buf, "%*d %*d %d %d", xp, yp) < 2) { |
217 |
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*xp = hmult; |
218 |
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*yp = vmult-1; |
219 |
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} |
220 |
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if (--(*xp) < 0) { /* decrement position */ |
221 |
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*xp = hmult-1; |
222 |
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if (--(*yp) < 0) { /* all done! */ |
223 |
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close(syncfd); |
224 |
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return(0); |
225 |
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} |
226 |
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} |
227 |
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sprintf(buf, "%d %d\n%d %d\n", hmult, vmult, *xp, *yp); |
228 |
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lseek(syncfd, 0L, 0); /* write new position */ |
229 |
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write(syncfd, buf, strlen(buf)); |
230 |
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fls.l_type = F_UNLCK; /* release sync file */ |
231 |
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fcntl(syncfd, F_SETLKW, &fls); |
232 |
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return(1); |
233 |
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} |
234 |
greg |
2.6 |
if (fgets(buf, sizeof(buf), stdin) == NULL) /* use stdin */ |
235 |
greg |
2.5 |
return(0); |
236 |
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if (sscanf(buf, "%d %d", xp, yp) == 2) |
237 |
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return(1); |
238 |
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fprintf(stderr, "%s: input format error\n", progname); |
239 |
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exit(1); |
240 |
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} |
241 |
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242 |
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243 |
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int |
244 |
greg |
2.1 |
cleanup() /* close rpict process and clean up */ |
245 |
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{ |
246 |
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register int rpstat; |
247 |
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248 |
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free((char *)scanline); |
249 |
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fclose(torp); |
250 |
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fclose(fromrp); |
251 |
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rpstat = close_process(rpd); |
252 |
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if (rpstat == -1) |
253 |
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rpstat = 0; |
254 |
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return(rpstat); |
255 |
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} |
256 |
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257 |
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258 |
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rpiece() /* render picture piece by piece */ |
259 |
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{ |
260 |
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VIEW pview; |
261 |
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int xorg, yorg; |
262 |
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263 |
greg |
2.5 |
while (nextpiece(&xorg, &yorg)) { |
264 |
greg |
2.1 |
copystruct(&pview, &ourview); /* compute view for piece */ |
265 |
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switch (ourview.type) { |
266 |
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case VT_PER: |
267 |
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pview.horiz = 2.*180./PI*atan( |
268 |
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tan(PI/180./2.*ourview.horiz)/hmult ); |
269 |
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pview.vert = 2.*180./PI*atan( |
270 |
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tan(PI/180./2.*ourview.vert)/vmult ); |
271 |
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break; |
272 |
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case VT_PAR: |
273 |
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case VT_ANG: |
274 |
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pview.horiz = ourview.horiz / hmult; |
275 |
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pview.vert = ourview.vert / vmult; |
276 |
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break; |
277 |
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case VT_HEM: |
278 |
greg |
2.3 |
pview.horiz = 2.*180./PI*asin( |
279 |
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sin(PI/180./2.*ourview.horiz)/hmult ); |
280 |
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pview.vert = 2.*180./PI*asin( |
281 |
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sin(PI/180./2.*ourview.vert)/vmult ); |
282 |
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break; |
283 |
greg |
2.1 |
default: |
284 |
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fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
285 |
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progname, ourview.type); |
286 |
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exit(1); |
287 |
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} |
288 |
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pview.hoff += xorg - 0.5*(hmult-1); |
289 |
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pview.voff += yorg - 0.5*(vmult-1); |
290 |
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fputs(VIEWSTR, torp); |
291 |
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fprintview(&pview, torp); |
292 |
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putc('\n', torp); |
293 |
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fflush(torp); /* assign piece to rpict */ |
294 |
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putpiece(xorg, yorg); /* place piece in output */ |
295 |
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if (verbose) { /* notify caller */ |
296 |
greg |
2.5 |
printf("%d %d done\n", xorg, yorg); |
297 |
|
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fflush(stdout); |
298 |
greg |
2.1 |
} |
299 |
|
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} |
300 |
|
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} |
301 |
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302 |
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303 |
|
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putpiece(xpos, ypos) /* get next piece from rpict */ |
304 |
|
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int xpos, ypos; |
305 |
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{ |
306 |
greg |
2.7 |
struct flock fls; |
307 |
greg |
2.1 |
int hr, vr; |
308 |
|
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int y; |
309 |
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|
310 |
greg |
2.5 |
if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) { |
311 |
|
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fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
312 |
|
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progname, xpos, ypos); |
313 |
|
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exit(1); |
314 |
|
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} |
315 |
greg |
2.1 |
getheader(fromrp, NULL); /* discard header info. */ |
316 |
|
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if (fscnresolu(&hr, &vr, fromrp) < 0 || /* check resolution */ |
317 |
|
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hr != hres || vr != vres) { |
318 |
greg |
2.3 |
fprintf(stderr, "%s: resolution mismatch from %s\n", |
319 |
|
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progname, rpargv[0]); |
320 |
greg |
2.1 |
exit(1); |
321 |
|
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} |
322 |
greg |
2.7 |
fls.l_whence = 1; |
323 |
|
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fls.l_start = 0L; |
324 |
|
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fls.l_len = hr*sizeof(COLR); |
325 |
greg |
2.1 |
for (y = 0; y < vr; y++) { /* transfer scanlines */ |
326 |
|
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if (freadcolrs(scanline, hr, fromrp) < 0) { |
327 |
greg |
2.3 |
fprintf(stderr, "%s: read error from %s\n", |
328 |
|
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progname, rpargv[0]); |
329 |
greg |
2.1 |
exit(1); |
330 |
|
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} |
331 |
|
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if ((y == 0 || hmult != 1) && lseek(outfd, |
332 |
|
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scanorig+((long)((vmult-1-ypos)*vres+y)*hmult*hres+xpos*hres)*sizeof(COLR), |
333 |
|
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0) == -1) { |
334 |
|
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fprintf(stderr, "%s: seek error\n", outfile); |
335 |
|
|
exit(1); |
336 |
|
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} |
337 |
greg |
2.7 |
fls.l_type = F_WRLCK; |
338 |
|
|
fcntl(outfd, F_SETLKW, &fls); |
339 |
greg |
2.1 |
if (writebuf(outfd, (char *)scanline, hr*sizeof(COLR)) != |
340 |
|
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hr*sizeof(COLR)) { |
341 |
|
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fprintf(stderr, "%s: write error\n", outfile); |
342 |
|
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exit(1); |
343 |
|
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} |
344 |
greg |
2.7 |
fls.l_type = F_UNLCK; |
345 |
|
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fcntl(outfd, F_SETLKW, &fls); |
346 |
greg |
2.1 |
} |
347 |
|
|
} |