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root/radiance/ray/src/hd/rhcopy.c
Revision: 3.20
Committed: Mon Oct 20 16:01:55 2003 UTC (20 years, 5 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 3.19: +3 -2 lines
Log Message:
Included "platform.h" wherever lseek() was called

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rhcopy.c,v 3.19 2003/07/27 22:12:02 schorsch Exp $";
3 #endif
4 /*
5 * Copy data into a holodeck file
6 */
7
8 #include "holo.h"
9 #include "platform.h"
10 #include "view.h"
11
12 #ifndef BKBSIZE
13 #define BKBSIZE 256 /* beam clump size (kilobytes) */
14 #endif
15
16 int checkdepth = 1; /* check depth (!-d option)? */
17 int checkrepeats = 0; /* check for repeats (-u option)? */
18 int frompicz; /* input from pictures & depth-buffers? */
19 int noutsects; /* number of output sections */
20 char obstr, unobstr; /* flag pointer values */
21
22 char *progname; /* global argv[0] */
23
24
25 main(argc, argv)
26 int argc;
27 char *argv[];
28 {
29 int i;
30
31 progname = argv[0];
32 frompicz = -1;
33 for (i = 2; i < argc && argv[i][0] == '-'; i++)
34 switch (argv[i][1]) {
35 case 'u':
36 checkrepeats = 1;
37 break;
38 case 'd':
39 checkdepth = 0;
40 break;
41 case 'h':
42 frompicz = 0;
43 break;
44 case 'p':
45 frompicz = 1;
46 break;
47 default:
48 goto userr;
49 }
50 if (i >= argc || frompicz < 0)
51 goto userr;
52 if (frompicz && (argc-i)%2)
53 goto userr;
54 noutsects = openholo(argv[1], 1);
55 if (frompicz) {
56 for ( ; i < argc; i += 2)
57 addpicz(argv[i], argv[i+1]);
58 } else {
59 if (BKBSIZE*1024*1.5 > hdcachesize)
60 hdcachesize = BKBSIZE*1024*1.5;
61 for ( ; i < argc; i++)
62 addholo(argv[i]);
63 }
64 quit(0);
65 userr:
66 fprintf(stderr, "Usage: %s output.hdk [-u][-d] -h inp1.hdk ..\n",
67 progname);
68 fprintf(stderr, " Or: %s output.hdk [-u][-d] -p inp1.pic inp1.zbf ..\n",
69 progname);
70 exit(1);
71 }
72
73
74 #define H_BADF 01
75 #define H_OBST 02
76 #define H_OBSF 04
77
78 int
79 holheadline(s, hf) /* check holodeck header line */
80 register char *s;
81 int *hf;
82 {
83 char fmt[32];
84
85 if (formatval(fmt, s)) {
86 if (strcmp(fmt, HOLOFMT))
87 *hf |= H_BADF;
88 else
89 *hf &= ~H_BADF;
90 return(0);
91 }
92 if (!strncmp(s, "OBSTRUCTIONS=", 13)) {
93 s += 13;
94 while (*s == ' ') s++;
95 if ((*s == 't') | (*s == 'T'))
96 *hf |= H_OBST;
97 else if ((*s == 'f') | (*s == 'F'))
98 *hf |= H_OBSF;
99 else
100 error(WARNING, "bad OBSTRUCTIONS value in holodeck");
101 return(0);
102 }
103 return(0);
104 }
105
106 int
107 openholo(fname, append) /* open existing holodeck file for i/o */
108 char *fname;
109 int append;
110 {
111 FILE *fp;
112 int fd;
113 int hflags = 0;
114 long nextloc;
115 int n;
116 /* open holodeck file */
117 if ((fp = fopen(fname, append ? "r+" : "r")) == NULL) {
118 sprintf(errmsg, "cannot open \"%s\" for %s", fname,
119 append ? "appending" : "reading");
120 error(SYSTEM, errmsg);
121 }
122 /* check header and magic number */
123 if (getheader(fp, holheadline, (char *)&hflags) < 0 ||
124 hflags&H_BADF || getw(fp) != HOLOMAGIC) {
125 sprintf(errmsg, "file \"%s\" not in holodeck format", fname);
126 error(USER, errmsg);
127 }
128 fd = dup(fileno(fp)); /* dup file handle */
129 nextloc = ftell(fp); /* get stdio position */
130 fclose(fp); /* done with stdio */
131 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
132 lseek(fd, (off_t)nextloc, SEEK_SET);
133 read(fd, (char *)&nextloc, sizeof(nextloc));
134 hdinit(fd, NULL)->priv = hflags&H_OBST ? &obstr :
135 hflags&H_OBSF ? &unobstr : (char *)NULL;
136 }
137 return(n);
138 }
139
140 #undef H_BADF
141 #undef H_OBST
142 #undef H_OBSF
143
144
145 addray(ro, rd, d, cv) /* add a ray to our output holodeck */
146 FVECT ro, rd;
147 double d;
148 COLR cv;
149 {
150 int sn, bi, n;
151 register HOLO *hp;
152 GCOORD gc[2];
153 BYTE rr[2][2];
154 BEAM *bp;
155 double d0, d1;
156 unsigned dc;
157 register RAYVAL *rv;
158 /* check each output section */
159 for (sn = noutsects; sn--; ) {
160 hp = hdlist[sn];
161 d0 = hdinter(gc, rr, &d1, hp, ro, rd);
162 if (d <= d0 || d1 < -0.001)
163 continue; /* missed section */
164 if (checkdepth) { /* check depth */
165 if (hp->priv == &obstr && d0 < -0.001)
166 continue; /* ray starts too late */
167 if (hp->priv == &unobstr && d < 0.999*d1)
168 continue; /* ray ends too soon */
169 }
170 dc = hdcode(hp, d-d0);
171 bi = hdbindex(hp, gc); /* check for duplicates */
172 if (checkrepeats && (bp = hdgetbeam(hp, bi)) != NULL) {
173 for (n = bp->nrm, rv = hdbray(bp); n--; rv++)
174 if ((hp->priv != NULL || rv->d == dc) &&
175 rv->r[0][0] == rr[0][0] &&
176 rv->r[0][1] == rr[0][1] &&
177 rv->r[1][0] == rr[1][0] &&
178 rv->r[1][1] == rr[1][1])
179 break;
180 if (n >= 0)
181 continue; /* found a matching ray */
182 }
183 rv = hdnewrays(hp, bi, 1);
184 rv->d = dc;
185 rv->r[0][0] = rr[0][0]; rv->r[0][1] = rr[0][1];
186 rv->r[1][0] = rr[1][0]; rv->r[1][1] = rr[1][1];
187 copycolr(rv->v, cv);
188 }
189 }
190
191
192 static BEAMI *beamdir;
193
194 static int
195 bpcmp(b1p, b2p) /* compare beam positions on disk */
196 int *b1p, *b2p;
197 {
198 register off_t pdif = beamdir[*b1p].fo - beamdir[*b2p].fo;
199
200 if (pdif > 0L) return(1);
201 if (pdif < 0L) return(-1);
202 return(0);
203 }
204
205 static int
206 addclump(hp, bq, nb) /* transfer the given clump and free */
207 HOLO *hp;
208 int *bq, nb;
209 {
210 GCOORD gc[2];
211 FVECT ro, rd;
212 double d;
213 int i;
214 register int k;
215 register BEAM *bp;
216 /* sort based on file position */
217 beamdir = hp->bi;
218 qsort((char *)bq, nb, sizeof(*bq), bpcmp);
219 /* transfer each beam */
220 for (i = 0; i < nb; i++) {
221 bp = hdgetbeam(hp, bq[i]);
222 hdbcoord(gc, hp, bq[i]);
223 /* add each ray to output */
224 for (k = bp->nrm; k--; ) {
225 d = hdray(ro, rd, hp, gc, hdbray(bp)[k].r);
226 if (hp->priv == &unobstr)
227 VSUM(ro, ro, rd, d);
228 else
229 d = 0.;
230 d = hddepth(hp, hdbray(bp)[k].d) - d;
231 addray(ro, rd, d, hdbray(bp)[k].v);
232 }
233 hdfreebeam(hp, bq[i]); /* free the beam */
234 }
235 return(0);
236 }
237
238 addholo(hdf) /* add a holodeck file */
239 char *hdf;
240 {
241 int fd;
242 /* open the holodeck for reading */
243 openholo(hdf, 0);
244 fd = hdlist[noutsects]->fd; /* remember the file handle */
245 while (hdlist[noutsects] != NULL) { /* load each section */
246 /* clump the beams */
247 clumpbeams(hdlist[noutsects], 0, BKBSIZE*1024, addclump);
248 hddone(hdlist[noutsects]); /* free the section */
249 }
250 close(fd); /* close input file */
251 hdflush(NULL); /* flush output */
252 }
253
254
255 struct phead {
256 VIEW vw;
257 double expos;
258 short gotview;
259 short badfmt;
260 short altprims;
261 };
262
263
264 int
265 picheadline(s, ph) /* process picture header line */
266 char *s;
267 struct phead *ph;
268 {
269 char fmt[32];
270
271 if (formatval(fmt, s)) {
272 ph->badfmt = strcmp(fmt, COLRFMT);
273 return(0);
274 }
275 if (isprims(s)) {
276 ph->altprims++; /* don't want to deal with this */
277 return(0);
278 }
279 if (isexpos(s)) {
280 ph->expos *= exposval(s);
281 return(0);
282 }
283 if (isview(s)) {
284 ph->gotview += sscanview(&ph->vw, s);
285 return(0);
286 }
287 return(0);
288 }
289
290
291 addpicz(pcf, zbf) /* add a picture + depth-buffer */
292 char *pcf, *zbf;
293 {
294 FILE *pfp;
295 int zfd;
296 COLR *cscn;
297 float *zscn;
298 struct phead phd;
299 int eshft;
300 double emult;
301 RESOLU prs;
302 RREAL vl[2];
303 FVECT ro, rd;
304 double aftd;
305 COLOR ctmp;
306 int j;
307 register int i;
308 /* open files */
309 if ((pfp = fopen(pcf, "r")) == NULL) {
310 sprintf(errmsg, "cannot open picture file \"%s\"", pcf);
311 error(SYSTEM, pcf);
312 }
313 if ((zfd = open(zbf, O_RDONLY)) < 0) {
314 sprintf(errmsg, "cannot open depth file \"%s\"", zbf);
315 error(SYSTEM, pcf);
316 }
317 /* load picture header */
318 phd.vw = stdview;
319 phd.expos = 1.0;
320 phd.badfmt = phd.gotview = phd.altprims = 0;
321 if (getheader(pfp, picheadline, (char *)&phd) < 0 ||
322 phd.badfmt || !fgetsresolu(&prs, pfp)) {
323 sprintf(errmsg, "bad format for picture file \"%s\"", pcf);
324 error(USER, errmsg);
325 }
326 if (!phd.gotview || setview(&phd.vw) != NULL) {
327 sprintf(errmsg, "missing/illegal view in picture \"%s\"",
328 pcf);
329 error(USER, errmsg);
330 }
331 if (phd.altprims) {
332 sprintf(errmsg, "ignoring primary values in picture \"%s\"",
333 pcf);
334 error(WARNING, errmsg);
335 }
336 /* figure out what to do about exposure */
337 if ((phd.expos < 0.99) | (phd.expos > 1.01)) {
338 emult = -log(phd.expos)/log(2.);
339 eshft = emult >= 0. ? emult+.5 : emult-.5;
340 emult -= (double)eshft;
341 if ((emult <= 0.01) & (emult >= -0.01))
342 emult = -1.;
343 else {
344 emult = 1./phd.expos;
345 eshft = 0;
346 }
347 } else {
348 emult = -1.;
349 eshft = 0;
350 }
351 /* allocate buffers */
352 cscn = (COLR *)malloc(scanlen(&prs)*sizeof(COLR));
353 zscn = (float *)malloc(scanlen(&prs)*sizeof(float));
354 if ((cscn == NULL) | (zscn == NULL))
355 error(SYSTEM, "out of memory in addpicz");
356 /* read and process each scanline */
357 for (j = 0; j < numscans(&prs); j++) {
358 i = scanlen(&prs); /* read colrs */
359 if (freadcolrs(cscn, i, pfp) < 0) {
360 sprintf(errmsg, "error reading picture \"%s\"", pcf);
361 error(USER, errmsg);
362 }
363 if (eshft) /* shift exposure */
364 shiftcolrs(cscn, i, eshft);
365 i *= sizeof(float); /* read depth */
366 if (read(zfd, (char *)zscn, i) != i) {
367 sprintf(errmsg, "error reading depth file \"%s\"", zbf);
368 error(USER, errmsg);
369 }
370 for (i = scanlen(&prs); i--; ) { /* do each pixel */
371 pix2loc(vl, &prs, i, j);
372 aftd = viewray(ro, rd, &phd.vw, vl[0], vl[1]);
373 if (aftd < -FTINY)
374 continue; /* off view */
375 if (aftd > FTINY && zscn[i] > aftd)
376 continue; /* aft clipped */
377 if (emult > 0.) { /* whatta pain */
378 colr_color(ctmp, cscn[i]);
379 scalecolor(ctmp, emult);
380 setcolr(cscn[i], colval(ctmp,RED),
381 colval(ctmp,GRN), colval(ctmp,BLU));
382 }
383 addray(ro, rd, (double)zscn[i], cscn[i]);
384 }
385 }
386 /* write output and free beams */
387 hdflush(NULL);
388 /* clean up */
389 free((void *)cscn);
390 free((void *)zscn);
391 fclose(pfp);
392 close(zfd);
393 }
394
395
396 void
397 eputs(s) /* put error message to stderr */
398 register char *s;
399 {
400 static int midline = 0;
401
402 if (!*s)
403 return;
404 if (!midline++) { /* prepend line with program name */
405 fputs(progname, stderr);
406 fputs(": ", stderr);
407 }
408 fputs(s, stderr);
409 if (s[strlen(s)-1] == '\n') {
410 fflush(stderr);
411 midline = 0;
412 }
413 }
414
415
416 void
417 quit(code) /* exit the program gracefully */
418 int code;
419 {
420 hdsync(NULL, 1); /* write out any buffered data */
421 exit(code);
422 }