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root/radiance/ray/src/util/dctimestep.c
Revision: 2.41
Committed: Wed Aug 14 18:20:02 2019 UTC (3 years, 3 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.40: +2 -2 lines
Log Message:
Added explicit byte-swap checks in headers using BigEndian= line

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: dctimestep.c,v 2.40 2019/03/01 01:00:03 greg Exp $";
3 #endif
4 /*
5 * Compute time-step result using Daylight Coefficient method.
6 *
7 * G. Ward
8 */
9
10 #include <ctype.h>
11 #include "platform.h"
12 #include "standard.h"
13 #include "cmatrix.h"
14 #include "platform.h"
15 #include "resolu.h"
16
17 char *progname; /* global argv[0] */
18
19 /* Sum together a set of images and write result to fout */
20 static int
21 sum_images(const char *fspec, const CMATRIX *cv, FILE *fout)
22 {
23 int myDT = DTfromHeader;
24 COLR *scanline = NULL;
25 CMATRIX *pmat = NULL;
26 int myXR=0, myYR=0;
27 int i, y;
28
29 if (cv->ncols != 1)
30 error(INTERNAL, "expected vector in sum_images()");
31 for (i = 0; i < cv->nrows; i++) {
32 const COLORV *scv = cv_lval(cv,i);
33 int flat_file = 0;
34 char fname[1024];
35 FILE *fp;
36 long data_start;
37 int dt, xr, yr;
38 COLORV *psp;
39 char *err;
40 /* check for zero */
41 if ((scv[RED] == 0) & (scv[GRN] == 0) & (scv[BLU] == 0) &&
42 (myDT != DTfromHeader) | (i < cv->nrows-1))
43 continue;
44 /* open next picture */
45 sprintf(fname, fspec, i);
46 if ((fp = fopen(fname, "rb")) == NULL) {
47 sprintf(errmsg, "cannot open picture '%s'", fname);
48 error(SYSTEM, errmsg);
49 }
50 dt = DTfromHeader;
51 if ((err = cm_getheader(&dt, NULL, NULL, NULL, fp)) != NULL)
52 error(USER, err);
53 if ((dt != DTrgbe) & (dt != DTxyze) ||
54 !fscnresolu(&xr, &yr, fp)) {
55 sprintf(errmsg, "file '%s' not a picture", fname);
56 error(USER, errmsg);
57 }
58 if (myDT == DTfromHeader) { /* on first one */
59 myDT = dt;
60 myXR = xr; myYR = yr;
61 scanline = (COLR *)malloc(sizeof(COLR)*myXR);
62 if (scanline == NULL)
63 error(SYSTEM, "out of memory in sum_images()");
64 pmat = cm_alloc(myYR, myXR);
65 memset(pmat->cmem, 0, sizeof(COLOR)*myXR*myYR);
66 /* finish header */
67 fputformat((char *)cm_fmt_id[myDT], fout);
68 fputc('\n', fout);
69 fflush(fout);
70 } else if ((dt != myDT) | (xr != myXR) | (yr != myYR)) {
71 sprintf(errmsg, "picture '%s' format/size mismatch",
72 fname);
73 error(USER, errmsg);
74 }
75 /* flat file check */
76 if ((data_start = ftell(fp)) > 0 && fseek(fp, 0L, SEEK_END) == 0) {
77 flat_file = (ftell(fp) == data_start + sizeof(COLR)*xr*yr);
78 if (fseek(fp, data_start, SEEK_SET) < 0) {
79 sprintf(errmsg, "cannot seek on picture '%s'", fname);
80 error(SYSTEM, errmsg);
81 }
82 }
83 psp = pmat->cmem;
84 for (y = 0; y < yr; y++) { /* read it in */
85 COLOR col;
86 int x;
87 if (flat_file ? getbinary(scanline, sizeof(COLR), xr, fp) != xr :
88 freadcolrs(scanline, xr, fp) < 0) {
89 sprintf(errmsg, "error reading picture '%s'",
90 fname);
91 error(SYSTEM, errmsg);
92 }
93 /* sum in scanline */
94 for (x = 0; x < xr; x++, psp += 3) {
95 if (!scanline[x][EXP])
96 continue; /* skip zeroes */
97 colr_color(col, scanline[x]);
98 multcolor(col, scv);
99 addcolor(psp, col);
100 }
101 }
102 fclose(fp); /* done this picture */
103 }
104 free(scanline);
105 i = cm_write(pmat, myDT, fout); /* write picture */
106 cm_free(pmat); /* free data */
107 return(i);
108 }
109
110 /* check to see if a string contains a %d or %o specification */
111 static int
112 hasNumberFormat(const char *s)
113 {
114 if (s == NULL)
115 return(0);
116
117 while (*s) {
118 while (*s != '%')
119 if (!*s++)
120 return(0);
121 if (*++s == '%') { /* ignore "%%" */
122 ++s;
123 continue;
124 }
125 while (isdigit(*s)) /* field length */
126 ++s;
127 /* field we'll use? */
128 if ((*s == 'd') | (*s == 'i') | (*s == 'o') |
129 (*s == 'x') | (*s == 'X'))
130 return(1);
131 }
132 return(0); /* didn't find one */
133 }
134
135 int
136 main(int argc, char *argv[])
137 {
138 int skyfmt = DTfromHeader;
139 int outfmt = DTascii;
140 int headout = 1;
141 int nsteps = 0;
142 char *ofspec = NULL;
143 FILE *ofp = stdout;
144 CMATRIX *cmtx; /* component vector/matrix result */
145 char fnbuf[256];
146 int a, i;
147
148 progname = argv[0];
149 /* get options */
150 for (a = 1; a < argc && argv[a][0] == '-'; a++)
151 switch (argv[a][1]) {
152 case 'n':
153 nsteps = atoi(argv[++a]);
154 if (nsteps < 0)
155 goto userr;
156 skyfmt = nsteps ? DTascii : DTfromHeader;
157 break;
158 case 'h':
159 headout = !headout;
160 break;
161 case 'i':
162 switch (argv[a][2]) {
163 case 'f':
164 skyfmt = DTfloat;
165 break;
166 case 'd':
167 skyfmt = DTdouble;
168 break;
169 case 'a':
170 skyfmt = DTascii;
171 break;
172 default:
173 goto userr;
174 }
175 break;
176 case 'o':
177 switch (argv[a][2]) {
178 case '\0': /* output specification (not format) */
179 ofspec = argv[++a];
180 break;
181 case 'f':
182 outfmt = DTfloat;
183 break;
184 case 'd':
185 outfmt = DTdouble;
186 break;
187 case 'a':
188 outfmt = DTascii;
189 break;
190 default:
191 goto userr;
192 }
193 break;
194 default:
195 goto userr;
196 }
197 if ((argc-a < 1) | (argc-a > 4))
198 goto userr;
199
200 if (argc-a > 2) { /* VTDs expression */
201 CMATRIX *smtx, *Dmat, *Tmat, *imtx;
202 const char *ccp;
203 /* get sky vector/matrix */
204 smtx = cm_load(argv[a+3], 0, nsteps, skyfmt);
205 nsteps = smtx->ncols;
206 /* load BSDF */
207 if (argv[a+1][0] != '!' &&
208 (ccp = strrchr(argv[a+1], '.')) != NULL &&
209 !strcasecmp(ccp+1, "XML"))
210 Tmat = cm_loadBTDF(argv[a+1]);
211 else
212 Tmat = cm_load(argv[a+1], 0, 0, DTfromHeader);
213 /* load Daylight matrix */
214 Dmat = cm_load(argv[a+2], Tmat->ncols,
215 smtx->nrows, DTfromHeader);
216 /* multiply vector through */
217 imtx = cm_multiply(Dmat, smtx);
218 cm_free(Dmat); cm_free(smtx);
219 cmtx = cm_multiply(Tmat, imtx);
220 cm_free(Tmat);
221 cm_free(imtx);
222 } else { /* sky vector/matrix only */
223 cmtx = cm_load(argv[a+1], 0, nsteps, skyfmt);
224 nsteps = cmtx->ncols;
225 }
226 /* prepare output stream */
227 if ((ofspec != NULL) & (nsteps == 1) && hasNumberFormat(ofspec)) {
228 sprintf(fnbuf, ofspec, 1);
229 ofspec = fnbuf;
230 }
231 if (ofspec != NULL && !hasNumberFormat(ofspec)) {
232 if ((ofp = fopen(ofspec, "w")) == NULL) {
233 fprintf(stderr, "%s: cannot open '%s' for output\n",
234 progname, ofspec);
235 return(1);
236 }
237 ofspec = NULL; /* only need to open once */
238 }
239 if (hasNumberFormat(argv[a])) { /* generating image(s) */
240 if (ofspec == NULL) {
241 SET_FILE_BINARY(ofp);
242 newheader("RADIANCE", ofp);
243 printargs(argc, argv, ofp);
244 fputnow(ofp);
245 }
246 if (nsteps > 1) /* multiple output frames? */
247 for (i = 0; i < nsteps; i++) {
248 CMATRIX *cvec = cm_column(cmtx, i);
249 if (ofspec != NULL) {
250 sprintf(fnbuf, ofspec, i);
251 if ((ofp = fopen(fnbuf, "wb")) == NULL) {
252 fprintf(stderr,
253 "%s: cannot open '%s' for output\n",
254 progname, fnbuf);
255 return(1);
256 }
257 newheader("RADIANCE", ofp);
258 printargs(argc, argv, ofp);
259 fputnow(ofp);
260 }
261 fprintf(ofp, "FRAME=%d\n", i);
262 if (!sum_images(argv[a], cvec, ofp))
263 return(1);
264 if (ofspec != NULL) {
265 if (fclose(ofp) == EOF) {
266 fprintf(stderr,
267 "%s: error writing to '%s'\n",
268 progname, fnbuf);
269 return(1);
270 }
271 ofp = stdout;
272 }
273 cm_free(cvec);
274 }
275 else if (!sum_images(argv[a], cmtx, ofp))
276 return(1);
277 } else { /* generating vector/matrix */
278 CMATRIX *Vmat = cm_load(argv[a], 0, cmtx->nrows, DTfromHeader);
279 CMATRIX *rmtx = cm_multiply(Vmat, cmtx);
280 cm_free(Vmat);
281 if (ofspec != NULL) { /* multiple vector files? */
282 const char *wtype = (outfmt==DTascii) ? "w" : "wb";
283 for (i = 0; i < nsteps; i++) {
284 CMATRIX *rvec = cm_column(rmtx, i);
285 sprintf(fnbuf, ofspec, i);
286 if ((ofp = fopen(fnbuf, wtype)) == NULL) {
287 fprintf(stderr,
288 "%s: cannot open '%s' for output\n",
289 progname, fnbuf);
290 return(1);
291 }
292 #ifdef getc_unlocked
293 flockfile(ofp);
294 #endif
295 if (headout) { /* header output */
296 newheader("RADIANCE", ofp);
297 printargs(argc, argv, ofp);
298 fputnow(ofp);
299 fprintf(ofp, "FRAME=%d\n", i);
300 fprintf(ofp, "NROWS=%d\n", rvec->nrows);
301 fputs("NCOLS=1\nNCOMP=3\n", ofp);
302 fputformat((char *)cm_fmt_id[outfmt], ofp);
303 fputc('\n', ofp);
304 }
305 cm_write(rvec, outfmt, ofp);
306 if (fclose(ofp) == EOF) {
307 fprintf(stderr,
308 "%s: error writing to '%s'\n",
309 progname, fnbuf);
310 return(1);
311 }
312 ofp = stdout;
313 cm_free(rvec);
314 }
315 } else {
316 #ifdef getc_unlocked
317 flockfile(ofp);
318 #endif
319 if (outfmt != DTascii)
320 SET_FILE_BINARY(ofp);
321 if (headout) { /* header output */
322 newheader("RADIANCE", ofp);
323 printargs(argc, argv, ofp);
324 fputnow(ofp);
325 fprintf(ofp, "NROWS=%d\n", rmtx->nrows);
326 fprintf(ofp, "NCOLS=%d\n", rmtx->ncols);
327 fputs("NCOMP=3\n", ofp);
328 fputformat((char *)cm_fmt_id[outfmt], ofp);
329 fputc('\n', ofp);
330 }
331 cm_write(rmtx, outfmt, ofp);
332 }
333 cm_free(rmtx);
334 }
335 if (fflush(ofp) == EOF) { /* final clean-up */
336 fprintf(stderr, "%s: write error on output\n", progname);
337 return(1);
338 }
339 cm_free(cmtx);
340 return(0);
341 userr:
342 fprintf(stderr, "Usage: %s [-n nsteps][-o ospec][-i{f|d|h}][-o{f|d}] DCspec [skyf]\n",
343 progname);
344 fprintf(stderr, " or: %s [-n nsteps][-o ospec][-i{f|d|h}][-o{f|d}] Vspec Tbsdf Dmat.dat [skyf]\n",
345 progname);
346 return(1);
347 }