ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/hd/rhcopy.c
Revision: 3.23
Committed: Fri Jan 2 11:42:01 2004 UTC (20 years, 3 months ago) by schorsch
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R7P2, rad3R7P1, rad3R6, rad3R6P1, rad3R8, rad3R9
Changes since 3.22: +11 -9 lines
Log Message:
Fixed typing/prototype of getheader() and its callback.

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: rhcopy.c,v 3.22 2004/01/01 11:21:55 schorsch Exp $";
3 #endif
4 /*
5 * Copy data into a holodeck file
6 */
7
8 #include "platform.h"
9 #include "rterror.h"
10 #include "holo.h"
11 #include "view.h"
12
13 #ifndef BKBSIZE
14 #define BKBSIZE 256 /* beam clump size (kilobytes) */
15 #endif
16
17 int checkdepth = 1; /* check depth (!-d option)? */
18 int checkrepeats = 0; /* check for repeats (-u option)? */
19 int frompicz; /* input from pictures & depth-buffers? */
20 int noutsects; /* number of output sections */
21 char obstr, unobstr; /* flag pointer values */
22
23 char *progname; /* global argv[0] */
24
25 struct phead {
26 VIEW vw;
27 double expos;
28 short gotview;
29 short badfmt;
30 short altprims;
31 };
32 static int openholo(char *fname, int append);
33 static void addray(FVECT ro, FVECT rd, double d, COLR cv);
34 static gethfunc holheadline;
35 static int bpcmp(const void *b1p, const void *b2p);
36 static int addclump(HOLO *hp, int *bq, int nb);
37 static void addholo(char *hdf);
38 static gethfunc picheadline;
39 static void addpicz(char *pcf, char *zbf);
40
41
42
43 int
44 main(
45 int argc,
46 char *argv[]
47 )
48 {
49 int i;
50
51 progname = argv[0];
52 frompicz = -1;
53 for (i = 2; i < argc && argv[i][0] == '-'; i++)
54 switch (argv[i][1]) {
55 case 'u':
56 checkrepeats = 1;
57 break;
58 case 'd':
59 checkdepth = 0;
60 break;
61 case 'h':
62 frompicz = 0;
63 break;
64 case 'p':
65 frompicz = 1;
66 break;
67 default:
68 goto userr;
69 }
70 if (i >= argc || frompicz < 0)
71 goto userr;
72 if (frompicz && (argc-i)%2)
73 goto userr;
74 noutsects = openholo(argv[1], 1);
75 if (frompicz) {
76 for ( ; i < argc; i += 2)
77 addpicz(argv[i], argv[i+1]);
78 } else {
79 if (BKBSIZE*1024*1.5 > hdcachesize)
80 hdcachesize = BKBSIZE*1024*1.5;
81 for ( ; i < argc; i++)
82 addholo(argv[i]);
83 }
84 quit(0);
85 userr:
86 fprintf(stderr, "Usage: %s output.hdk [-u][-d] -h inp1.hdk ..\n",
87 progname);
88 fprintf(stderr, " Or: %s output.hdk [-u][-d] -p inp1.pic inp1.zbf ..\n",
89 progname);
90 exit(1);
91 }
92
93
94 #define H_BADF 01
95 #define H_OBST 02
96 #define H_OBSF 04
97
98 static int
99 holheadline( /* check holodeck header line */
100 register char *s,
101 void *vhf
102 )
103 {
104 char fmt[32];
105 int *hf = vhf;
106
107 if (formatval(fmt, s)) {
108 if (strcmp(fmt, HOLOFMT))
109 *hf |= H_BADF;
110 else
111 *hf &= ~H_BADF;
112 return(0);
113 }
114 if (!strncmp(s, "OBSTRUCTIONS=", 13)) {
115 s += 13;
116 while (*s == ' ') s++;
117 if ((*s == 't') | (*s == 'T'))
118 *hf |= H_OBST;
119 else if ((*s == 'f') | (*s == 'F'))
120 *hf |= H_OBSF;
121 else
122 error(WARNING, "bad OBSTRUCTIONS value in holodeck");
123 return(0);
124 }
125 return(0);
126 }
127
128 int
129 openholo( /* open existing holodeck file for i/o */
130 char *fname,
131 int append
132 )
133 {
134 FILE *fp;
135 int fd;
136 int hflags = 0;
137 long nextloc;
138 int n;
139 /* open holodeck file */
140 if ((fp = fopen(fname, append ? "r+" : "r")) == NULL) {
141 sprintf(errmsg, "cannot open \"%s\" for %s", fname,
142 append ? "appending" : "reading");
143 error(SYSTEM, errmsg);
144 }
145 /* check header and magic number */
146 if (getheader(fp, holheadline, &hflags) < 0 ||
147 hflags&H_BADF || getw(fp) != HOLOMAGIC) {
148 sprintf(errmsg, "file \"%s\" not in holodeck format", fname);
149 error(USER, errmsg);
150 }
151 fd = dup(fileno(fp)); /* dup file handle */
152 nextloc = ftell(fp); /* get stdio position */
153 fclose(fp); /* done with stdio */
154 for (n = 0; nextloc > 0L; n++) { /* initialize each section */
155 lseek(fd, (off_t)nextloc, SEEK_SET);
156 read(fd, (char *)&nextloc, sizeof(nextloc));
157 hdinit(fd, NULL)->priv = hflags&H_OBST ? &obstr :
158 hflags&H_OBSF ? &unobstr : (char *)NULL;
159 }
160 return(n);
161 }
162
163 #undef H_BADF
164 #undef H_OBST
165 #undef H_OBSF
166
167
168 void
169 addray( /* add a ray to our output holodeck */
170 FVECT ro,
171 FVECT rd,
172 double d,
173 COLR cv
174 )
175 {
176 int sn, bi, n;
177 register HOLO *hp;
178 GCOORD gc[2];
179 BYTE rr[2][2];
180 BEAM *bp;
181 double d0, d1;
182 unsigned dc;
183 register RAYVAL *rv;
184 /* check each output section */
185 for (sn = noutsects; sn--; ) {
186 hp = hdlist[sn];
187 d0 = hdinter(gc, rr, &d1, hp, ro, rd);
188 if (d <= d0 || d1 < -0.001)
189 continue; /* missed section */
190 if (checkdepth) { /* check depth */
191 if (hp->priv == &obstr && d0 < -0.001)
192 continue; /* ray starts too late */
193 if (hp->priv == &unobstr && d < 0.999*d1)
194 continue; /* ray ends too soon */
195 }
196 dc = hdcode(hp, d-d0);
197 bi = hdbindex(hp, gc); /* check for duplicates */
198 if (checkrepeats && (bp = hdgetbeam(hp, bi)) != NULL) {
199 for (n = bp->nrm, rv = hdbray(bp); n--; rv++)
200 if ((hp->priv != NULL || rv->d == dc) &&
201 rv->r[0][0] == rr[0][0] &&
202 rv->r[0][1] == rr[0][1] &&
203 rv->r[1][0] == rr[1][0] &&
204 rv->r[1][1] == rr[1][1])
205 break;
206 if (n >= 0)
207 continue; /* found a matching ray */
208 }
209 rv = hdnewrays(hp, bi, 1);
210 rv->d = dc;
211 rv->r[0][0] = rr[0][0]; rv->r[0][1] = rr[0][1];
212 rv->r[1][0] = rr[1][0]; rv->r[1][1] = rr[1][1];
213 copycolr(rv->v, cv);
214 }
215 }
216
217
218 static BEAMI *beamdir;
219
220 static int
221 bpcmp( /* compare beam positions on disk */
222 const void *b1p,
223 const void *b2p
224 )
225 {
226 register off_t pdif = beamdir[*(int*)b1p].fo - beamdir[*(int*)b2p].fo;
227
228 if (pdif > 0L) return(1);
229 if (pdif < 0L) return(-1);
230 return(0);
231 }
232
233 static int
234 addclump( /* transfer the given clump and free */
235 HOLO *hp,
236 int *bq,
237 int nb
238 )
239 {
240 GCOORD gc[2];
241 FVECT ro, rd;
242 double d;
243 int i;
244 register int k;
245 register BEAM *bp;
246 /* sort based on file position */
247 beamdir = hp->bi;
248 qsort((char *)bq, nb, sizeof(*bq), bpcmp);
249 /* transfer each beam */
250 for (i = 0; i < nb; i++) {
251 bp = hdgetbeam(hp, bq[i]);
252 hdbcoord(gc, hp, bq[i]);
253 /* add each ray to output */
254 for (k = bp->nrm; k--; ) {
255 d = hdray(ro, rd, hp, gc, hdbray(bp)[k].r);
256 if (hp->priv == &unobstr)
257 VSUM(ro, ro, rd, d);
258 else
259 d = 0.;
260 d = hddepth(hp, hdbray(bp)[k].d) - d;
261 addray(ro, rd, d, hdbray(bp)[k].v);
262 }
263 hdfreebeam(hp, bq[i]); /* free the beam */
264 }
265 return(0);
266 }
267
268
269 void
270 addholo( /* add a holodeck file */
271 char *hdf
272 )
273 {
274 int fd;
275 /* open the holodeck for reading */
276 openholo(hdf, 0);
277 fd = hdlist[noutsects]->fd; /* remember the file handle */
278 while (hdlist[noutsects] != NULL) { /* load each section */
279 /* clump the beams */
280 clumpbeams(hdlist[noutsects], 0, BKBSIZE*1024, addclump);
281 hddone(hdlist[noutsects]); /* free the section */
282 }
283 close(fd); /* close input file */
284 hdflush(NULL); /* flush output */
285 }
286
287
288
289 static int
290 picheadline( /* process picture header line */
291 char *s,
292 void *vph
293 )
294 {
295 char fmt[32];
296 struct phead *ph = vph;
297
298 if (formatval(fmt, s)) {
299 ph->badfmt = strcmp(fmt, COLRFMT);
300 return(0);
301 }
302 if (isprims(s)) {
303 ph->altprims++; /* don't want to deal with this */
304 return(0);
305 }
306 if (isexpos(s)) {
307 ph->expos *= exposval(s);
308 return(0);
309 }
310 if (isview(s)) {
311 ph->gotview += sscanview(&ph->vw, s);
312 return(0);
313 }
314 return(0);
315 }
316
317
318 void
319 addpicz( /* add a picture + depth-buffer */
320 char *pcf,
321 char *zbf
322 )
323 {
324 FILE *pfp;
325 int zfd;
326 COLR *cscn;
327 float *zscn;
328 struct phead phd;
329 int eshft;
330 double emult;
331 RESOLU prs;
332 RREAL vl[2];
333 FVECT ro, rd;
334 double aftd;
335 COLOR ctmp;
336 int j;
337 register int i;
338 /* open files */
339 if ((pfp = fopen(pcf, "r")) == NULL) {
340 sprintf(errmsg, "cannot open picture file \"%s\"", pcf);
341 error(SYSTEM, pcf);
342 }
343 if ((zfd = open(zbf, O_RDONLY)) < 0) {
344 sprintf(errmsg, "cannot open depth file \"%s\"", zbf);
345 error(SYSTEM, pcf);
346 }
347 /* load picture header */
348 phd.vw = stdview;
349 phd.expos = 1.0;
350 phd.badfmt = phd.gotview = phd.altprims = 0;
351 if (getheader(pfp, picheadline, &phd) < 0 ||
352 phd.badfmt || !fgetsresolu(&prs, pfp)) {
353 sprintf(errmsg, "bad format for picture file \"%s\"", pcf);
354 error(USER, errmsg);
355 }
356 if (!phd.gotview || setview(&phd.vw) != NULL) {
357 sprintf(errmsg, "missing/illegal view in picture \"%s\"",
358 pcf);
359 error(USER, errmsg);
360 }
361 if (phd.altprims) {
362 sprintf(errmsg, "ignoring primary values in picture \"%s\"",
363 pcf);
364 error(WARNING, errmsg);
365 }
366 /* figure out what to do about exposure */
367 if ((phd.expos < 0.99) | (phd.expos > 1.01)) {
368 emult = -log(phd.expos)/log(2.);
369 eshft = emult >= 0. ? emult+.5 : emult-.5;
370 emult -= (double)eshft;
371 if ((emult <= 0.01) & (emult >= -0.01))
372 emult = -1.;
373 else {
374 emult = 1./phd.expos;
375 eshft = 0;
376 }
377 } else {
378 emult = -1.;
379 eshft = 0;
380 }
381 /* allocate buffers */
382 cscn = (COLR *)malloc(scanlen(&prs)*sizeof(COLR));
383 zscn = (float *)malloc(scanlen(&prs)*sizeof(float));
384 if ((cscn == NULL) | (zscn == NULL))
385 error(SYSTEM, "out of memory in addpicz");
386 /* read and process each scanline */
387 for (j = 0; j < numscans(&prs); j++) {
388 i = scanlen(&prs); /* read colrs */
389 if (freadcolrs(cscn, i, pfp) < 0) {
390 sprintf(errmsg, "error reading picture \"%s\"", pcf);
391 error(USER, errmsg);
392 }
393 if (eshft) /* shift exposure */
394 shiftcolrs(cscn, i, eshft);
395 i *= sizeof(float); /* read depth */
396 if (read(zfd, (char *)zscn, i) != i) {
397 sprintf(errmsg, "error reading depth file \"%s\"", zbf);
398 error(USER, errmsg);
399 }
400 for (i = scanlen(&prs); i--; ) { /* do each pixel */
401 pix2loc(vl, &prs, i, j);
402 aftd = viewray(ro, rd, &phd.vw, vl[0], vl[1]);
403 if (aftd < -FTINY)
404 continue; /* off view */
405 if (aftd > FTINY && zscn[i] > aftd)
406 continue; /* aft clipped */
407 if (emult > 0.) { /* whatta pain */
408 colr_color(ctmp, cscn[i]);
409 scalecolor(ctmp, emult);
410 setcolr(cscn[i], colval(ctmp,RED),
411 colval(ctmp,GRN), colval(ctmp,BLU));
412 }
413 addray(ro, rd, (double)zscn[i], cscn[i]);
414 }
415 }
416 /* write output and free beams */
417 hdflush(NULL);
418 /* clean up */
419 free((void *)cscn);
420 free((void *)zscn);
421 fclose(pfp);
422 close(zfd);
423 }
424
425
426 void
427 eputs( /* put error message to stderr */
428 register char *s
429 )
430 {
431 static int midline = 0;
432
433 if (!*s)
434 return;
435 if (!midline++) { /* prepend line with program name */
436 fputs(progname, stderr);
437 fputs(": ", stderr);
438 }
439 fputs(s, stderr);
440 if (s[strlen(s)-1] == '\n') {
441 fflush(stderr);
442 midline = 0;
443 }
444 }
445
446
447 void
448 quit( /* exit the program gracefully */
449 int code
450 )
451 {
452 hdsync(NULL, 1); /* write out any buffered data */
453 exit(code);
454 }