src/hd/rhpict.c

/* Copyright (c) 1999 Silicon Graphics, Inc. */

#ifndef lint
static char SCCSid[] = "$SunId$ SGI";
#endif

/*
 * Radiance holodeck picture generator
 */

#include "rholo.h"
#include "view.h"
#include "resolu.h"

char    *progname;              /* our program name */
char    *hdkfile;               /* holodeck file name */
char    gargc;                  /* global argc */
char    **gargv;                /* global argv */

VIEW    myview = STDVIEW;       /* current output view */
int     xres = 512, yres = 512; /* max. horizontal and vertical resolution */
char    *outspec = NULL;        /* output file specification */
double  randfrac = -1.;         /* random resampling fraction */
double  pixaspect = 1.;         /* pixel aspect ratio */
int     seqstart = 0;           /* sequence start frame */
double  expval = 1.;            /* exposure value */

COLOR   *mypixel;               /* pixels being rendered */
float   *myweight;              /* weights (used to compute final pixels) */
float   *mydepth;               /* depth values (visibility culling) */
int     hres, vres;             /* current horizontal and vertical res. */

extern int      nowarn;         /* turn warnings off? */


main(argc, argv)
int     argc;
char    *argv[];
{
        int     i, rval;

        gargc = argc; gargv = argv;
        progname = argv[0];                     /* get arguments */
        for (i = 1; i < argc && argv[i][0] == '-'; i++) {
                rval = getviewopt(&myview, argc-i, argv+i);
                if (rval >= 0) {                /* view option */
                        i += rval;
                        continue;
                }
                switch (argv[i][1]) {
                case 'w':                       /* turn off warnings */
                        nowarn++;
                        break;
                case 'p':                       /* pixel aspect/exposure */
                        if (badarg(argc-i-1,argv+i+1,"f"))
                                goto userr;
                        if (argv[i][2] == 'a')
                                pixaspect = atof(argv[++i]);
                        else if (argv[i][2] == 'e') {
                                expval = atof(argv[++i]);
                                if (argv[i][0] == '-' | argv[i][0] == '+')
                                        expval = pow(2., expval);
                        } else
                                goto userr;
                        break;
                case 'x':                       /* horizontal resolution */
                        if (badarg(argc-i-1,argv+i+1,"i"))
                                goto userr;
                        xres = atoi(argv[++i]);
                        break;
                case 'y':                       /* vertical resolution */
                        if (badarg(argc-i-1,argv+i+1,"i"))
                                goto userr;
                        yres = atoi(argv[++i]);
                        break;
                case 'o':                       /* output file specificaiton */
                        if (badarg(argc-i-1,argv+i+1,"s"))
                                goto userr;
                        outspec = argv[++i];
                        break;
                case 'r':                       /* random sampling */
                        if (badarg(argc-i-1,argv+i+1,"f"))
                                goto userr;
                        randfrac = atof(argv[++i]);
                        break;
                case 's':                       /* smooth sampling */
                        randfrac = -1.;
                        break;
                case 'S':                       /* sequence start */
                        if (badarg(argc-i-1,argv+i+1,"i"))
                                goto userr;
                        seqstart = atoi(argv[++i]);
                        break;
                case 'v':                       /* view file */
                        if (argv[i][2]!='f' || badarg(argc-i-1,argv+i+1,"s"))
                                goto userr;
                        rval = viewfile(argv[++i], &myview, NULL);
                        if (rval < 0) {
                                sprintf(errmsg, "cannot open view file \"%s\"",
                                                argv[i]);
                                error(SYSTEM, errmsg);
                        } else if (rval == 0) {
                                sprintf(errmsg, "bad view file \"%s\"",
                                                argv[i]);
                                error(USER, errmsg);
                        }
                        break;
                default:
                        goto userr;
                }
        }
                                                /* open holodeck file */
        if (i != argc-1)
                goto userr;
        hdkfile = argv[i];
        initialize();
                                                /* render picture(s) */
        if (seqstart <= 0)
                dopicture(0);
        else
                while (nextview(&myview, stdin) != EOF)
                        dopicture(seqstart++);
        quit(0);                                /* all done! */
userr:
        fprintf(stderr,
"Usage: %s [-w][-r rf][-pa pa][-pe ex][-x hr][-y vr][-S stfn][-o outp][view] input.hdk\n",
                        progname);
        quit(1);
}


dopicture(fn)                   /* render view from holodeck */
int     fn;
{
        char    *err;
        int     rval;
        BEAMLIST        blist;

        if ((err = setview(&myview)) != NULL) {
                sprintf(errmsg, "%s -- skipping frame %d", err, fn);
                error(WARNING, errmsg);
                return;
        }
        startpicture(fn);               /* open output picture */
                                        /* determine relevant beams */
        viewbeams(&myview, hres, vres, &blist);
                                        /* render image */
        if (blist.nb > 0) {
                render_frame(blist.bl, blist.nb);
                free((char *)blist.bl);
        } else {
                sprintf(errmsg, "no section visible in frame %d", fn);
                error(WARNING, errmsg);
        }
        rval = endpicture();            /* write pixel values */
        if (rval < 0) {
                sprintf(errmsg, "error writing frame %d", fn);
                error(SYSTEM, errmsg);
        }
#ifdef DEBUG
        if (blist.nb > 0 & rval > 0) {
                sprintf(errmsg, "%d unrendered pixels in frame %d (%.1f%%)",
                                rval, fn, 100.*rval/(hres*vres));
                error(WARNING, errmsg);
        }
#endif
}


render_frame(bl, nb)            /* render frame from beam values */
register PACKHEAD       *bl;
int     nb;
{
        extern int      pixBeam();
        register HDBEAMI        *bil;
        register int    i;

        if (nb <= 0) return;
        if ((bil = (HDBEAMI *)malloc(nb*sizeof(HDBEAMI))) == NULL)
                error(SYSTEM, "out of memory in render_frame");
        for (i = nb; i--; ) {
                bil[i].h = hdlist[bl[i].hd];
                bil[i].b = bl[i].bi;
        }
        hdloadbeams(bil, nb, pixBeam);
        pixFinish(randfrac);
        free((char *)bil);
}


startpicture(fn)                /* initialize picture for rendering & output */
int     fn;
{
        extern char     VersionID[];
        double  pa = pixaspect;
        char    fname[256];
                                /* compute picture resolution */
        hres = xres; vres = yres;
        normaspect(viewaspect(&myview), &pa, &hres, &vres);
                                /* prepare output */
        if (outspec != NULL) {
                sprintf(fname, outspec, fn);
                if (freopen(fname, "w", stdout) == NULL) {
                        sprintf(errmsg, "cannot open output \"%s\"", fname);
                        error(SYSTEM, errmsg);
                }
        }
                                /* write header */
        newheader("RADIANCE", stdout);
        printf("SOFTWARE= %s\n", VersionID);
        printargs(gargc, gargv, stdout);
        if (fn)
                printf("FRAME=%d\n", fn);
        fputs(VIEWSTR, stdout);
        fprintview(&myview, stdout);
        fputc('\n', stdout);
        if (pa < 0.99 | pa > 1.01)
                fputaspect(pa, stdout);
        if (expval < 0.99 | expval > 1.01)
                fputexpos(expval, stdout);
        fputformat(COLRFMT, stdout);
        fputc('\n', stdout);
                                /* write resolution (standard order) */
        fprtresolu(hres, vres, stdout);
                                /* prepare image buffers */
        bzero((char *)mypixel, hres*vres*sizeof(COLOR));
        bzero((char *)myweight, hres*vres*sizeof(float));
        bzero((char *)mydepth, hres*vres*sizeof(float));
}


int
endpicture()                    /* finish and write out pixels */
{
        int     lastr = -1, nunrend = 0;
        int4    lastp, lastrp;
        register int4   p;
        register double d;
                                /* compute final pixel values */
        for (p = hres*vres; p--; ) {
                if (myweight[p] <= FTINY) {
                        if (lastr >= 0)
                                if (p/hres == lastp/hres)
                                        copycolor(mypixel[p], mypixel[lastp]);
                                else
                                        copycolor(mypixel[p], mypixel[lastrp]);
                        nunrend++;
                        continue;
                }
                d = expval/myweight[p];
                scalecolor(mypixel[p], d);
                if ((lastp=p)/hres != lastr)
                        lastr = (lastrp=p)/hres;
        }
                                /* write each scanline */
        for (p = vres; p--; )
                if (fwritescan(mypixel+p*hres, hres, stdout) < 0)
                        return(-1);
        if (fflush(stdout) == EOF)
                return(-1);
        return(nunrend);
}


initialize()                    /* initialize holodeck and buffers */
{
        extern long     ftell();
        int     fd;
        FILE    *fp;
        int     n;
        int4    nextloc;
                                        /* open holodeck file */
        if ((fp = fopen(hdkfile, "r")) == NULL) {
                sprintf(errmsg, "cannot open \"%s\" for reading", hdkfile);
                error(SYSTEM, errmsg);
        }
                                        /* check header format */
        checkheader(fp, HOLOFMT, NULL);
                                        /* check magic number */
        if (getw(fp) != HOLOMAGIC) {
                sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
                                hdkfile);
                error(USER, errmsg);
        }
        nextloc = ftell(fp);                    /* get stdio position */
        fd = dup(fileno(fp));                   /* dup file descriptor */
        fclose(fp);                             /* done with stdio */
        for (n = 0; nextloc > 0L; n++) {        /* initialize each section */
                lseek(fd, (long)nextloc, 0);
                read(fd, (char *)&nextloc, sizeof(nextloc));
                hdinit(fd, NULL);
        }
                                        /* allocate picture buffer */
        mypixel = (COLOR *)bmalloc(xres*yres*sizeof(COLOR));
        myweight = (float *)bmalloc(xres*yres*sizeof(float));
        mydepth = (float *)bmalloc(xres*yres*sizeof(float));
        if (mypixel == NULL | myweight == NULL | mydepth == NULL)
                error(SYSTEM, "out of memory in initialize");
}


eputs(s)                        /* put error message to stderr */
register char  *s;
{
        static int  midline = 0;

        if (!*s)
                return;
        if (!midline++) {       /* prepend line with program name */
                fputs(progname, stderr);
                fputs(": ", stderr);
        }
        fputs(s, stderr);
        if (s[strlen(s)-1] == '\n') {
                fflush(stderr);
                midline = 0;
        }
}
Revision:	3.7
Committed:	Tue Mar 9 15:10:26 1999 UTC (25 years, 1 month ago) by gwlarson
Content type:	text/plain
Branch:	MAIN
Changes since 3.6:	+4 -1 lines
Log Message:	added printing of command arguments in header
#	User	Rev	Content
1	gwlarson	3.1	/* Copyright (c) 1999 Silicon Graphics, Inc. */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ SGI";
5			#endif
6
7			/*
8			* Radiance holodeck picture generator
9			*/
10
11			#include "rholo.h"
12			#include "view.h"
13			#include "resolu.h"
14
15			char progname; / our program name */
16			char hdkfile; / holodeck file name */
17	gwlarson	3.7	char gargc; /* global argc */
18			char *gargv; / global argv */
19	gwlarson	3.1
20			VIEW myview = STDVIEW; /* current output view */
21			int xres = 512, yres = 512; /* max. horizontal and vertical resolution */
22			char outspec = NULL; / output file specification */
23	gwlarson	3.6	double randfrac = -1.; /* random resampling fraction */
24	gwlarson	3.1	double pixaspect = 1.; /* pixel aspect ratio */
25			int seqstart = 0; /* sequence start frame */
26			double expval = 1.; /* exposure value */
27
28			COLOR mypixel; / pixels being rendered */
29			float myweight; / weights (used to compute final pixels) */
30	gwlarson	3.2	float mydepth; / depth values (visibility culling) */
31	gwlarson	3.1	int hres, vres; /* current horizontal and vertical res. */
32
33			extern int nowarn; /* turn warnings off? */
34
35
36			main(argc, argv)
37			int argc;
38			char *argv[];
39			{
40			int i, rval;
41
42	gwlarson	3.7	gargc = argc; gargv = argv;
43	gwlarson	3.1	progname = argv[0]; /* get arguments */
44			for (i = 1; i < argc && argv[i][0] == '-'; i++) {
45			rval = getviewopt(&myview, argc-i, argv+i);
46			if (rval >= 0) { /* view option */
47			i += rval;
48			continue;
49			}
50			switch (argv[i][1]) {
51			case 'w': /* turn off warnings */
52			nowarn++;
53			break;
54			case 'p': /* pixel aspect/exposure */
55			if (badarg(argc-i-1,argv+i+1,"f"))
56			goto userr;
57	gwlarson	3.3	if (argv[i][2] == 'a')
58	gwlarson	3.1	pixaspect = atof(argv[++i]);
59	gwlarson	3.3	else if (argv[i][2] == 'e') {
60	gwlarson	3.1	expval = atof(argv[++i]);
61			if (argv[i][0] == '-' \| argv[i][0] == '+')
62			expval = pow(2., expval);
63			} else
64			goto userr;
65			break;
66			case 'x': /* horizontal resolution */
67			if (badarg(argc-i-1,argv+i+1,"i"))
68			goto userr;
69			xres = atoi(argv[++i]);
70			break;
71			case 'y': /* vertical resolution */
72			if (badarg(argc-i-1,argv+i+1,"i"))
73			goto userr;
74			yres = atoi(argv[++i]);
75			break;
76			case 'o': /* output file specificaiton */
77			if (badarg(argc-i-1,argv+i+1,"s"))
78			goto userr;
79			outspec = argv[++i];
80			break;
81	gwlarson	3.5	case 'r': /* random sampling */
82	gwlarson	3.6	if (badarg(argc-i-1,argv+i+1,"f"))
83			goto userr;
84			randfrac = atof(argv[++i]);
85	gwlarson	3.5	break;
86			case 's': /* smooth sampling */
87	gwlarson	3.6	randfrac = -1.;
88	gwlarson	3.5	break;
89	gwlarson	3.1	case 'S': /* sequence start */
90			if (badarg(argc-i-1,argv+i+1,"i"))
91			goto userr;
92			seqstart = atoi(argv[++i]);
93			break;
94			case 'v': /* view file */
95	gwlarson	3.4	if (argv[i][2]!='f' \|\| badarg(argc-i-1,argv+i+1,"s"))
96	gwlarson	3.1	goto userr;
97			rval = viewfile(argv[++i], &myview, NULL);
98			if (rval < 0) {
99			sprintf(errmsg, "cannot open view file \"%s\"",
100			argv[i]);
101			error(SYSTEM, errmsg);
102			} else if (rval == 0) {
103			sprintf(errmsg, "bad view file \"%s\"",
104			argv[i]);
105			error(USER, errmsg);
106			}
107			break;
108			default:
109			goto userr;
110			}
111			}
112			/* open holodeck file */
113	gwlarson	3.3	if (i != argc-1)
114	gwlarson	3.1	goto userr;
115	gwlarson	3.3	hdkfile = argv[i];
116	gwlarson	3.1	initialize();
117			/* render picture(s) */
118			if (seqstart <= 0)
119			dopicture(0);
120			else
121			while (nextview(&myview, stdin) != EOF)
122			dopicture(seqstart++);
123			quit(0); /* all done! */
124			userr:
125			fprintf(stderr,
126	gwlarson	3.6	"Usage: %s [-w][-r rf][-pa pa][-pe ex][-x hr][-y vr][-S stfn][-o outp][view] input.hdk\n",
127	gwlarson	3.1	progname);
128			quit(1);
129			}
130
131
132			dopicture(fn) /* render view from holodeck */
133			int fn;
134			{
135			char *err;
136			int rval;
137			BEAMLIST blist;
138
139			if ((err = setview(&myview)) != NULL) {
140			sprintf(errmsg, "%s -- skipping frame %d", err, fn);
141			error(WARNING, errmsg);
142			return;
143			}
144			startpicture(fn); /* open output picture */
145			/* determine relevant beams */
146			viewbeams(&myview, hres, vres, &blist);
147			/* render image */
148			if (blist.nb > 0) {
149			render_frame(blist.bl, blist.nb);
150			free((char *)blist.bl);
151			} else {
152			sprintf(errmsg, "no section visible in frame %d", fn);
153			error(WARNING, errmsg);
154			}
155			rval = endpicture(); /* write pixel values */
156			if (rval < 0) {
157			sprintf(errmsg, "error writing frame %d", fn);
158			error(SYSTEM, errmsg);
159			}
160	gwlarson	3.3	#ifdef DEBUG
161	gwlarson	3.1	if (blist.nb > 0 & rval > 0) {
162	gwlarson	3.3	sprintf(errmsg, "%d unrendered pixels in frame %d (%.1f%%)",
163			rval, fn, 100.rval/(hresvres));
164	gwlarson	3.1	error(WARNING, errmsg);
165			}
166	gwlarson	3.3	#endif
167	gwlarson	3.1	}
168
169
170			render_frame(bl, nb) /* render frame from beam values */
171			register PACKHEAD *bl;
172			int nb;
173			{
174	gwlarson	3.2	extern int pixBeam();
175	gwlarson	3.1	register HDBEAMI *bil;
176			register int i;
177
178			if (nb <= 0) return;
179			if ((bil = (HDBEAMI )malloc(nbsizeof(HDBEAMI))) == NULL)
180			error(SYSTEM, "out of memory in render_frame");
181			for (i = nb; i--; ) {
182			bil[i].h = hdlist[bl[i].hd];
183			bil[i].b = bl[i].bi;
184			}
185	gwlarson	3.2	hdloadbeams(bil, nb, pixBeam);
186	gwlarson	3.6	pixFinish(randfrac);
187	gwlarson	3.1	free((char *)bil);
188			}
189
190
191			startpicture(fn) /* initialize picture for rendering & output */
192			int fn;
193			{
194			extern char VersionID[];
195			double pa = pixaspect;
196			char fname[256];
197			/* compute picture resolution */
198			hres = xres; vres = yres;
199			normaspect(viewaspect(&myview), &pa, &hres, &vres);
200			/* prepare output */
201			if (outspec != NULL) {
202			sprintf(fname, outspec, fn);
203			if (freopen(fname, "w", stdout) == NULL) {
204			sprintf(errmsg, "cannot open output \"%s\"", fname);
205			error(SYSTEM, errmsg);
206			}
207			}
208			/* write header */
209			newheader("RADIANCE", stdout);
210			printf("SOFTWARE= %s\n", VersionID);
211	gwlarson	3.7	printargs(gargc, gargv, stdout);
212	gwlarson	3.1	if (fn)
213			printf("FRAME=%d\n", fn);
214			fputs(VIEWSTR, stdout);
215			fprintview(&myview, stdout);
216			fputc('\n', stdout);
217			if (pa < 0.99 \| pa > 1.01)
218			fputaspect(pa, stdout);
219			if (expval < 0.99 \| expval > 1.01)
220			fputexpos(expval, stdout);
221			fputformat(COLRFMT, stdout);
222			fputc('\n', stdout);
223			/* write resolution (standard order) */
224			fprtresolu(hres, vres, stdout);
225			/* prepare image buffers */
226			bzero((char )mypixel, hresvres*sizeof(COLOR));
227			bzero((char )myweight, hresvres*sizeof(float));
228	gwlarson	3.2	bzero((char )mydepth, hresvres*sizeof(float));
229	gwlarson	3.1	}
230
231
232			int
233			endpicture() /* finish and write out pixels */
234			{
235	gwlarson	3.4	int lastr = -1, nunrend = 0;
236			int4 lastp, lastrp;
237			register int4 p;
238	gwlarson	3.1	register double d;
239			/* compute final pixel values */
240			for (p = hres*vres; p--; ) {
241			if (myweight[p] <= FTINY) {
242	gwlarson	3.4	if (lastr >= 0)
243			if (p/hres == lastp/hres)
244			copycolor(mypixel[p], mypixel[lastp]);
245			else
246			copycolor(mypixel[p], mypixel[lastrp]);
247	gwlarson	3.1	nunrend++;
248			continue;
249			}
250			d = expval/myweight[p];
251			scalecolor(mypixel[p], d);
252	gwlarson	3.4	if ((lastp=p)/hres != lastr)
253			lastr = (lastrp=p)/hres;
254	gwlarson	3.1	}
255			/* write each scanline */
256	gwlarson	3.4	for (p = vres; p--; )
257			if (fwritescan(mypixel+p*hres, hres, stdout) < 0)
258	gwlarson	3.1	return(-1);
259			if (fflush(stdout) == EOF)
260			return(-1);
261			return(nunrend);
262			}
263
264
265			initialize() /* initialize holodeck and buffers */
266			{
267			extern long ftell();
268			int fd;
269			FILE *fp;
270			int n;
271			int4 nextloc;
272			/* open holodeck file */
273			if ((fp = fopen(hdkfile, "r")) == NULL) {
274			sprintf(errmsg, "cannot open \"%s\" for reading", hdkfile);
275			error(SYSTEM, errmsg);
276			}
277			/* check header format */
278			checkheader(fp, HOLOFMT, NULL);
279			/* check magic number */
280			if (getw(fp) != HOLOMAGIC) {
281			sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
282			hdkfile);
283			error(USER, errmsg);
284			}
285			nextloc = ftell(fp); /* get stdio position */
286			fd = dup(fileno(fp)); /* dup file descriptor */
287			fclose(fp); /* done with stdio */
288			for (n = 0; nextloc > 0L; n++) { /* initialize each section */
289			lseek(fd, (long)nextloc, 0);
290			read(fd, (char *)&nextloc, sizeof(nextloc));
291			hdinit(fd, NULL);
292			}
293			/* allocate picture buffer */
294			mypixel = (COLOR )bmalloc(xresyres*sizeof(COLOR));
295			myweight = (float )bmalloc(xresyres*sizeof(float));
296	gwlarson	3.2	mydepth = (float )bmalloc(xresyres*sizeof(float));
297			if (mypixel == NULL \| myweight == NULL \| mydepth == NULL)
298	gwlarson	3.1	error(SYSTEM, "out of memory in initialize");
299			}
300
301
302			eputs(s) /* put error message to stderr */
303			register char *s;
304			{
305			static int midline = 0;
306
307			if (!*s)
308			return;
309			if (!midline++) { /* prepend line with program name */
310			fputs(progname, stderr);
311			fputs(": ", stderr);
312			}
313			fputs(s, stderr);
314			if (s[strlen(s)-1] == '\n') {
315			fflush(stderr);
316			midline = 0;
317			}
318			}