src/hd/rhpict.c

#ifndef lint
static const char       RCSid[] = "$Id: rhpict.c,v 3.16 2003/10/22 02:06:34 greg Exp $";
#endif
/*
 * Radiance holodeck picture generator
 */

#include <string.h>

#include "platform.h"
#include "rterror.h"
#include "rholo.h"
#include "view.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? */

static void dopicture(int fn);
static void render_frame(PACKHEAD *bl, int nb);
static void startpicture(int fn);
static int endpicture(void);
static void initialize(void);
 /* from rhpict2.c */
extern void pixFinish(double ransamp);
extern void pixBeam(BEAM *bp, HDBEAMI *hb);


int
main(
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);
        return 1;  /* pro forma return */
}


static void
dopicture(                      /* 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((void *)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
}


static void
render_frame(           /* render frame from beam values */
        register PACKHEAD       *bl,
        int     nb
)
{
        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((void *)bil);
}


static void
startpicture(           /* 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 */
        memset((char *)mypixel, '\0', hres*vres*sizeof(COLOR));
        memset((char *)myweight, '\0', hres*vres*sizeof(float));
        memset((char *)mydepth, '\0', hres*vres*sizeof(float));
}


static int
endpicture(void)                        /* finish and write out pixels */
{
        int     lastr = -1, nunrend = 0;
        int32   lastp, lastrp;
        register int32  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);
}


static void
initialize(void)                        /* initialize holodeck and buffers */
{
        int     fd;
        FILE    *fp;
        int     n;
        int32   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, (off_t)nextloc, SEEK_SET);
                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");
}


void
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:	3.17
Committed:	Thu Jan 1 11:21:55 2004 UTC (20 years, 4 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 3.16:	+34 -15 lines
Log Message:	Ansification and prototypes.
#	User	Rev	Content
1	gwlarson	3.1	#ifndef lint
2	schorsch	3.17	static const char RCSid[] = "$Id: rhpict.c,v 3.16 2003/10/22 02:06:34 greg Exp $";
3	gwlarson	3.1	#endif
4			/*
5			* Radiance holodeck picture generator
6			*/
7
8	schorsch	3.11	#include <string.h>
9
10	greg	3.16	#include "platform.h"
11	schorsch	3.17	#include "rterror.h"
12	gwlarson	3.1	#include "rholo.h"
13			#include "view.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	schorsch	3.17	static void dopicture(int fn);
36			static void render_frame(PACKHEAD *bl, int nb);
37			static void startpicture(int fn);
38			static int endpicture(void);
39			static void initialize(void);
40			/* from rhpict2.c */
41			extern void pixFinish(double ransamp);
42			extern void pixBeam(BEAM bp, HDBEAMI hb);
43	gwlarson	3.1
44	schorsch	3.17
45			int
46			main(
47			int argc,
48			char *argv[]
49			)
50	gwlarson	3.1	{
51			int i, rval;
52
53	gwlarson	3.7	gargc = argc; gargv = argv;
54	gwlarson	3.1	progname = argv[0]; /* get arguments */
55			for (i = 1; i < argc && argv[i][0] == '-'; i++) {
56			rval = getviewopt(&myview, argc-i, argv+i);
57			if (rval >= 0) { /* view option */
58			i += rval;
59			continue;
60			}
61			switch (argv[i][1]) {
62			case 'w': /* turn off warnings */
63			nowarn++;
64			break;
65			case 'p': /* pixel aspect/exposure */
66			if (badarg(argc-i-1,argv+i+1,"f"))
67			goto userr;
68	gwlarson	3.3	if (argv[i][2] == 'a')
69	gwlarson	3.1	pixaspect = atof(argv[++i]);
70	gwlarson	3.3	else if (argv[i][2] == 'e') {
71	gwlarson	3.1	expval = atof(argv[++i]);
72	schorsch	3.14	if ((argv[i][0] == '-') \| (argv[i][0] == '+'))
73	gwlarson	3.1	expval = pow(2., expval);
74			} else
75			goto userr;
76			break;
77			case 'x': /* horizontal resolution */
78			if (badarg(argc-i-1,argv+i+1,"i"))
79			goto userr;
80			xres = atoi(argv[++i]);
81			break;
82			case 'y': /* vertical resolution */
83			if (badarg(argc-i-1,argv+i+1,"i"))
84			goto userr;
85			yres = atoi(argv[++i]);
86			break;
87			case 'o': /* output file specificaiton */
88			if (badarg(argc-i-1,argv+i+1,"s"))
89			goto userr;
90			outspec = argv[++i];
91			break;
92	gwlarson	3.5	case 'r': /* random sampling */
93	gwlarson	3.6	if (badarg(argc-i-1,argv+i+1,"f"))
94			goto userr;
95			randfrac = atof(argv[++i]);
96	gwlarson	3.5	break;
97			case 's': /* smooth sampling */
98	gwlarson	3.6	randfrac = -1.;
99	gwlarson	3.5	break;
100	gwlarson	3.1	case 'S': /* sequence start */
101			if (badarg(argc-i-1,argv+i+1,"i"))
102			goto userr;
103			seqstart = atoi(argv[++i]);
104			break;
105			case 'v': /* view file */
106	gwlarson	3.4	if (argv[i][2]!='f' \|\| badarg(argc-i-1,argv+i+1,"s"))
107	gwlarson	3.1	goto userr;
108			rval = viewfile(argv[++i], &myview, NULL);
109			if (rval < 0) {
110			sprintf(errmsg, "cannot open view file \"%s\"",
111			argv[i]);
112			error(SYSTEM, errmsg);
113			} else if (rval == 0) {
114			sprintf(errmsg, "bad view file \"%s\"",
115			argv[i]);
116			error(USER, errmsg);
117			}
118			break;
119			default:
120			goto userr;
121			}
122			}
123			/* open holodeck file */
124	gwlarson	3.3	if (i != argc-1)
125	gwlarson	3.1	goto userr;
126	gwlarson	3.3	hdkfile = argv[i];
127	gwlarson	3.1	initialize();
128			/* render picture(s) */
129			if (seqstart <= 0)
130			dopicture(0);
131			else
132			while (nextview(&myview, stdin) != EOF)
133			dopicture(seqstart++);
134			quit(0); /* all done! */
135			userr:
136			fprintf(stderr,
137	gwlarson	3.6	"Usage: %s [-w][-r rf][-pa pa][-pe ex][-x hr][-y vr][-S stfn][-o outp][view] input.hdk\n",
138	gwlarson	3.1	progname);
139			quit(1);
140	schorsch	3.17	return 1; /* pro forma return */
141	gwlarson	3.1	}
142
143
144	schorsch	3.17	static void
145			dopicture( /* render view from holodeck */
146			int fn
147			)
148	gwlarson	3.1	{
149			char *err;
150			int rval;
151			BEAMLIST blist;
152
153			if ((err = setview(&myview)) != NULL) {
154			sprintf(errmsg, "%s -- skipping frame %d", err, fn);
155			error(WARNING, errmsg);
156			return;
157			}
158			startpicture(fn); /* open output picture */
159			/* determine relevant beams */
160			viewbeams(&myview, hres, vres, &blist);
161			/* render image */
162			if (blist.nb > 0) {
163			render_frame(blist.bl, blist.nb);
164	greg	3.8	free((void *)blist.bl);
165	gwlarson	3.1	} else {
166			sprintf(errmsg, "no section visible in frame %d", fn);
167			error(WARNING, errmsg);
168			}
169			rval = endpicture(); /* write pixel values */
170			if (rval < 0) {
171			sprintf(errmsg, "error writing frame %d", fn);
172			error(SYSTEM, errmsg);
173			}
174	gwlarson	3.3	#ifdef DEBUG
175	gwlarson	3.1	if (blist.nb > 0 & rval > 0) {
176	gwlarson	3.3	sprintf(errmsg, "%d unrendered pixels in frame %d (%.1f%%)",
177			rval, fn, 100.rval/(hresvres));
178	gwlarson	3.1	error(WARNING, errmsg);
179			}
180	gwlarson	3.3	#endif
181	gwlarson	3.1	}
182
183
184	schorsch	3.17	static void
185			render_frame( /* render frame from beam values */
186			register PACKHEAD *bl,
187			int nb
188			)
189	gwlarson	3.1	{
190			register HDBEAMI *bil;
191			register int i;
192
193			if (nb <= 0) return;
194			if ((bil = (HDBEAMI )malloc(nbsizeof(HDBEAMI))) == NULL)
195			error(SYSTEM, "out of memory in render_frame");
196			for (i = nb; i--; ) {
197			bil[i].h = hdlist[bl[i].hd];
198			bil[i].b = bl[i].bi;
199			}
200	gwlarson	3.2	hdloadbeams(bil, nb, pixBeam);
201	gwlarson	3.6	pixFinish(randfrac);
202	greg	3.8	free((void *)bil);
203	gwlarson	3.1	}
204
205
206	schorsch	3.17	static void
207			startpicture( /* initialize picture for rendering & output */
208			int fn
209			)
210	gwlarson	3.1	{
211			extern char VersionID[];
212			double pa = pixaspect;
213			char fname[256];
214			/* compute picture resolution */
215			hres = xres; vres = yres;
216			normaspect(viewaspect(&myview), &pa, &hres, &vres);
217			/* prepare output */
218			if (outspec != NULL) {
219			sprintf(fname, outspec, fn);
220			if (freopen(fname, "w", stdout) == NULL) {
221			sprintf(errmsg, "cannot open output \"%s\"", fname);
222			error(SYSTEM, errmsg);
223			}
224			}
225			/* write header */
226			newheader("RADIANCE", stdout);
227			printf("SOFTWARE= %s\n", VersionID);
228	gwlarson	3.7	printargs(gargc, gargv, stdout);
229	gwlarson	3.1	if (fn)
230			printf("FRAME=%d\n", fn);
231			fputs(VIEWSTR, stdout);
232			fprintview(&myview, stdout);
233			fputc('\n', stdout);
234	schorsch	3.14	if ((pa < 0.99) \| (pa > 1.01))
235	gwlarson	3.1	fputaspect(pa, stdout);
236	schorsch	3.14	if ((expval < 0.99) \| (expval > 1.01))
237	gwlarson	3.1	fputexpos(expval, stdout);
238			fputformat(COLRFMT, stdout);
239			fputc('\n', stdout);
240			/* write resolution (standard order) */
241			fprtresolu(hres, vres, stdout);
242			/* prepare image buffers */
243	schorsch	3.11	memset((char )mypixel, '\0', hresvres*sizeof(COLOR));
244			memset((char )myweight, '\0', hresvres*sizeof(float));
245			memset((char )mydepth, '\0', hresvres*sizeof(float));
246	gwlarson	3.1	}
247
248
249	schorsch	3.17	static int
250			endpicture(void) /* finish and write out pixels */
251	gwlarson	3.1	{
252	gwlarson	3.4	int lastr = -1, nunrend = 0;
253	greg	3.10	int32 lastp, lastrp;
254			register int32 p;
255	gwlarson	3.1	register double d;
256			/* compute final pixel values */
257			for (p = hres*vres; p--; ) {
258			if (myweight[p] <= FTINY) {
259	schorsch	3.13	if (lastr >= 0) {
260	gwlarson	3.4	if (p/hres == lastp/hres)
261			copycolor(mypixel[p], mypixel[lastp]);
262			else
263			copycolor(mypixel[p], mypixel[lastrp]);
264	schorsch	3.13	}
265	gwlarson	3.1	nunrend++;
266			continue;
267			}
268			d = expval/myweight[p];
269			scalecolor(mypixel[p], d);
270	gwlarson	3.4	if ((lastp=p)/hres != lastr)
271			lastr = (lastrp=p)/hres;
272	gwlarson	3.1	}
273			/* write each scanline */
274	gwlarson	3.4	for (p = vres; p--; )
275			if (fwritescan(mypixel+p*hres, hres, stdout) < 0)
276	gwlarson	3.1	return(-1);
277			if (fflush(stdout) == EOF)
278			return(-1);
279			return(nunrend);
280			}
281
282
283	schorsch	3.17	static void
284			initialize(void) /* initialize holodeck and buffers */
285	gwlarson	3.1	{
286			int fd;
287			FILE *fp;
288			int n;
289	greg	3.10	int32 nextloc;
290	gwlarson	3.1	/* open holodeck file */
291			if ((fp = fopen(hdkfile, "r")) == NULL) {
292			sprintf(errmsg, "cannot open \"%s\" for reading", hdkfile);
293			error(SYSTEM, errmsg);
294			}
295			/* check header format */
296			checkheader(fp, HOLOFMT, NULL);
297			/* check magic number */
298			if (getw(fp) != HOLOMAGIC) {
299			sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
300			hdkfile);
301			error(USER, errmsg);
302			}
303			nextloc = ftell(fp); /* get stdio position */
304			fd = dup(fileno(fp)); /* dup file descriptor */
305			fclose(fp); /* done with stdio */
306			for (n = 0; nextloc > 0L; n++) { /* initialize each section */
307	greg	3.15	lseek(fd, (off_t)nextloc, SEEK_SET);
308	gwlarson	3.1	read(fd, (char *)&nextloc, sizeof(nextloc));
309			hdinit(fd, NULL);
310			}
311			/* allocate picture buffer */
312			mypixel = (COLOR )bmalloc(xresyres*sizeof(COLOR));
313			myweight = (float )bmalloc(xresyres*sizeof(float));
314	gwlarson	3.2	mydepth = (float )bmalloc(xresyres*sizeof(float));
315	schorsch	3.14	if ((mypixel == NULL) \| (myweight == NULL) \| (mydepth == NULL))
316	gwlarson	3.1	error(SYSTEM, "out of memory in initialize");
317			}
318
319
320	greg	3.8	void
321	gwlarson	3.1	eputs(s) /* put error message to stderr */
322			register char *s;
323			{
324			static int midline = 0;
325
326			if (!*s)
327			return;
328			if (!midline++) { /* prepend line with program name */
329			fputs(progname, stderr);
330			fputs(": ", stderr);
331			}
332			fputs(s, stderr);
333			if (s[strlen(s)-1] == '\n') {
334			fflush(stderr);
335			midline = 0;
336			}
337			}