src/px/pfilt.c

/* Copyright (c) 1986 Regents of the University of California */

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

/*
 *  pfilt.c - program to post-process picture file.
 *
 *     9/26/85
 */

#include  <stdio.h>

#include  <signal.h>

#include  "color.h"

extern char  *malloc();
extern float  *matchlamp();

#define  FEQ(a,b)       ((a) >= .98*(b) && (a) <= 1.02*(b))

#define  CHECKRAD       1.5     /* radius to check for filtering */

COLOR  exposure = WHTCOLOR;     /* exposure for the frame */

double  rad = 0.0;              /* output pixel radius for filtering */

int  nrows = 0;                 /* number of rows for output */
int  ncols = 0;                 /* number of columns for output */

double  x_c = 1.0;              /* ratio of output x size to input */
double  y_r = 1.0;              /* ratio of output y size to input */

int  singlepass = 0;            /* true means skip first pass */

int  avghot = 0;                /* true means average in bright spots */

double  hotlvl = 1000.0;        /* level considered "hot" */

int  npts = 0;                  /* (half) number of points for stars */

double  spread = 1e-4;          /* spread for star points */

#define  TEMPLATE       "/usr/tmp/pfXXXXXX"

char  *tfname = NULL;

char  *lampdat = "lamp.tab";    /* lamp data file */

int  xres, yres;                /* resolution of input */
double  inpaspect = 1.0;        /* pixel aspect ratio of input */
int  correctaspect = 0;         /* aspect ratio correction? */

int  wrongformat = 0;

int  xrad;                      /* x window size */
int  yrad;                      /* y window size */

int  barsize;                   /* size of input scan bar */
COLOR  **scanin;                /* input scan bar */
COLOR  *scanout;                /* output scan line */

char  *progname;


main(argc, argv)
int  argc;
char  **argv;
{
        extern char  *mktemp();
        extern double  atof(), pow();
        extern long  ftell();
        extern int  quit(), headline();
        FILE  *fin;
        float  *lampcolor;
        char  *lamptype = NULL;
        long  fpos;
        double  outaspect = 0.0;
        double  d;
        int  i;

        if (signal(SIGINT, quit) == SIG_IGN)
                signal(SIGINT, SIG_IGN);
        if (signal(SIGHUP, quit) == SIG_IGN)
                signal(SIGINT, SIG_IGN);
        signal(SIGTERM, quit);
        signal(SIGPIPE, quit);
#ifdef  SIGXCPU
        signal(SIGXCPU, quit);
        signal(SIGXFSZ, quit);
#endif

        progname = argv[0];

        for (i = 1; i < argc; i++)
                if (argv[i][0] == '-')
                        switch (argv[i][1]) {
                        case 'x':
                                i++;
                                if (argv[i][0] == '/') {
                                        x_c = 1.0/atof(argv[i]+1);
                                        ncols = 0;
                                } else
                                        ncols = atoi(argv[i]);
                                break;
                        case 'y':
                                i++;
                                if (argv[i][0] == '/') {
                                        y_r = 1.0/atof(argv[i]+1);
                                        nrows = 0;
                                } else
                                        nrows = atoi(argv[i]);
                                break;
                        case 'c':
                                correctaspect = !correctaspect;
                                break;
                        case 'p':
                                i++;
                                outaspect = atof(argv[i]);
                                break;
                        case 'e':
                                if (argv[i+1][0] == '+' || argv[i+1][0] == '-')
                                        d = pow(2.0, atof(argv[i+1]));
                                else
                                        d = atof(argv[i+1]);
                                if (d < 1e-20 || d > 1e20) {
                                        fprintf(stderr,
                                                "%s: exposure out of range\n",
                                                        argv[0]);
                                        exit(1);
                                }
                                switch (argv[i][2]) {
                                case '\0':
                                        scalecolor(exposure, d);
                                        break;
                                case 'r':
                                        colval(exposure,RED) *= d;
                                        break;
                                case 'g':
                                        colval(exposure,GRN) *= d;
                                        break;
                                case 'b':
                                        colval(exposure,BLU) *= d;
                                        break;
                                default:
                                        goto badopt;
                                }
                                i++;
                                break;
                        case 'f':
                                lampdat = argv[++i];
                                break;
                        case 't':
                                lamptype = argv[++i];
                                break;
                        case '1':
                                singlepass = 1;
                                break;
                        case '2':
                                singlepass = 0;
                                break;
                        case 'n':
                                npts = atoi(argv[++i]) / 2;
                                break;
                        case 's':
                                spread = atof(argv[++i]);
                                break;
                        case 'a':
                                avghot = !avghot;
                                break;
                        case 'h':
                                hotlvl = atof(argv[++i]);
                                break;
                        case 'r':
                                rad = atof(argv[++i]);
                                break;
                        case 'b':
                                rad = 0.0;
                                break;
                        default:;
                        badopt:
                                fprintf(stderr, "%s: unknown option: %s\n",
                                                progname, argv[i]);
                                quit(1);
                                break;
                        }
                else
                        break;
                                        /* get lamp data (if necessary) */
        if (lamptype != NULL) {
                if (loadlamps(lampdat) < 0)
                        quit(1);
                if ((lampcolor = matchlamp(lamptype)) == NULL) {
                        fprintf(stderr, "%s: unknown lamp type\n", lamptype);
                        quit(1);
                }
                colval(exposure,RED) /= lampcolor[0];
                colval(exposure,GRN) /= lampcolor[1];
                colval(exposure,BLU) /= lampcolor[2];
                freelamps();
        }
                                        /* open input file */
        if (i == argc) {
                if (singlepass)
                        fin = stdin;
                else {
                        tfname = mktemp(TEMPLATE);
                        if ((fin = fopen(tfname, "w+")) == NULL) {
                                fprintf(stderr, "%s: can't create ", progname);
                                fprintf(stderr, "temp file \"%s\"\n", tfname);
                                quit(1);
                        }
                        copyfile(stdin, fin);
                        if (fseek(fin, 0L, 0) == -1) {
                                fprintf(stderr, "%s: seek fail\n", progname);
                                quit(1);
                        }
                }
        } else if (i == argc-1) {
                if ((fin = fopen(argv[i], "r")) == NULL) {
                        fprintf(stderr, "%s: can't open file \"%s\"\n",
                                                progname, argv[i]);
                        quit(1);
                }
        } else {
                fprintf(stderr, "%s: bad # file arguments\n", progname);
                quit(1);
        }
                                        /* get header */
        getheader(fin, headline, NULL);
        if (wrongformat) {
                fprintf(stderr, "%s: input must be a Radiance picture\n",
                                progname);
                quit(1);
        }
                                        /* add new header info. */
        printargs(i, argv, stdout);
                                        /* get picture size */
        if (fgetresolu(&xres, &yres, fin) != (YMAJOR|YDECR)) {
                fprintf(stderr, "%s: bad picture size\n", progname);
                quit(1);
        }
                                        /* compute output resolution */
        if (ncols <= 0)
                ncols = x_c*xres + .5;
        if (nrows <= 0)
                nrows = y_r*yres + .5;
        if (outaspect > .01) {
                d = inpaspect * yres/xres / outaspect;
                if (d * ncols > nrows)
                        ncols = nrows / d;
                else
                        nrows = ncols * d;
        }
        x_c = (double)ncols/xres;
        y_r = (double)nrows/yres;

        if (singlepass) {               /* skip exposure, etc. */
                pass1default();
                pass2(fin);
                quit(0);
        }

        fpos = ftell(fin);              /* save input file position */
        
        pass1(fin);

        if (fseek(fin, fpos, 0) == -1) {
                fprintf(stderr, "%s: seek fail\n", progname);
                quit(1);
        }
        pass2(fin);

        quit(0);
}


headline(s)                             /* process line from header */
char  *s;
{
        char  fmt[32];

        fputs(s, stdout);               /* copy to output */
        if (isaspect(s))                /* get aspect ratio */
                inpaspect *= aspectval(s);
        else if (isformat(s)) {
                formatval(fmt, s);
                wrongformat = strcmp(fmt, COLRFMT);
        }
}


copyfile(in, out)                       /* copy a file */
register FILE  *in, *out;
{
        register int  c;

        while ((c = getc(in)) != EOF)
                putc(c, out);

        if (ferror(out)) {
                fprintf(stderr, "%s: write error in copyfile\n", progname);
                quit(1);
        }
}


pass1(in)                               /* first pass of picture file */
FILE  *in;
{
        int  i;
        COLOR  *scan;

        pass1init();

        scan = (COLOR *)malloc(xres*sizeof(COLOR));
        if (scan == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                quit(1);
        }
        for (i = 0; i < yres; i++) {
                if (freadscan(scan, xres, in) < 0) {
                        nrows = nrows * i / yres;       /* adjust frame */
                        if (nrows <= 0) {
                                fprintf(stderr, "%s: empty frame\n", progname);
                                quit(1);
                        }
                        fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
                                        progname, 100*i/yres);
                        yres = i;
                        y_r = (double)nrows/yres;
                        break;
                }
                pass1scan(scan, i);
        }
        free((char *)scan);
}


pass2(in)                       /* last pass on file, write to stdout */
FILE  *in;
{
        int  yread;
        int  ycent, xcent;
        int  r, c;
        
        pass2init();
        scan2init();
        yread = 0;
        for (r = 0; r < nrows; r++) {
                ycent = (long)r*yres/nrows;
                while (yread <= ycent+yrad) {
                        if (yread < yres) {
                                if (freadscan(scanin[yread%barsize],
                                                xres, in) < 0) {
                                        fprintf(stderr,
                                                "%s: bad read (y=%d)\n",
                                                progname, yres-1-yread);
                                        quit(1);
                                }
                                pass2scan(scanin[yread%barsize], yread);
                        }
                        yread++;
                }
                for (c = 0; c < ncols; c++) {
                        xcent = (long)c*xres/ncols;
                        if (rad <= 0.0)
                                dobox(scanout[c], xcent, ycent, c, r);
                        else
                                dogauss(scanout[c], xcent, ycent, c, r);
                }
                if (fwritescan(scanout, ncols, stdout) < 0) {
                        fprintf(stderr, "%s: write error in pass2\n", progname);
                        quit(1);
                }
        }
                                        /* skip leftovers */
        while (yread < yres) {
                if (freadscan(scanin[0], xres, in) < 0)
                        break;
                yread++;
        }
}


scan2init()                     /* prepare scanline arrays */
{
        COLOR   ctmp;
        double  d;
        register int  i;

        if (rad <= 0.0) {
                xrad = xres/ncols/2 + 1;
                yrad = yres/nrows/2 + 1;
        } else {
                if (nrows >= yres && ncols >= xres)
                        rad *= (y_r + x_c)/2.0;

                xrad = CHECKRAD*rad/x_c + 1;
                yrad = CHECKRAD*rad/y_r + 1;

                initmask();             /* initialize filter table */
        }
        barsize = 2 * yrad;
        scanin = (COLOR **)malloc(barsize*sizeof(COLOR *));
        for (i = 0; i < barsize; i++) {
                scanin[i] = (COLOR *)malloc(xres*sizeof(COLOR));
                if (scanin[i] == NULL) {
                        fprintf(stderr, "%s: out of memory\n", progname);
                        quit(1);
                }
        }
        scanout = (COLOR *)malloc(ncols*sizeof(COLOR));
        if (scanout == NULL) {
                fprintf(stderr, "%s: out of memory\n", progname);
                quit(1);
        }
                                        /* record pixel aspect ratio */
        if (!correctaspect) {
                d = x_c / y_r;
                if (!FEQ(d,1.0))
                        fputaspect(d, stdout);
        }
                                        /* record exposure */
        d = bright(exposure);
        if (!FEQ(d,1.0))
                fputexpos(d, stdout);
                                        /* record color correction */
        copycolor(ctmp, exposure);
        scalecolor(ctmp, 1.0/d);
        if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) ||
                        !FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
                fputcolcor(ctmp, stdout);
        printf("\n");
                                        /* write out resolution */
        fputresolu(YMAJOR|YDECR, ncols, nrows, stdout);
}


quit(code)              /* remove temporary file and exit */
int  code;
{
        if (tfname != NULL)
                unlink(tfname);
        exit(code);
}
Revision:	1.16
Committed:	Thu Apr 18 14:35:21 1991 UTC (33 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.15:	+14 -1 lines
Log Message:	added format information to headers
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1986 Regents of the University of California */
2
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* pfilt.c - program to post-process picture file.
9			*
10			* 9/26/85
11			*/
12
13			#include <stdio.h>
14
15			#include <signal.h>
16
17			#include "color.h"
18
19			extern char *malloc();
20	greg	1.13	extern float *matchlamp();
21	greg	1.1
22	greg	1.15	#define FEQ(a,b) ((a) >= .98(b) && (a) <= 1.02(b))
23
24	greg	1.1	#define CHECKRAD 1.5 /* radius to check for filtering */
25
26			COLOR exposure = WHTCOLOR; /* exposure for the frame */
27
28			double rad = 0.0; /* output pixel radius for filtering */
29
30			int nrows = 0; /* number of rows for output */
31			int ncols = 0; /* number of columns for output */
32
33	greg	1.4	double x_c = 1.0; /* ratio of output x size to input */
34			double y_r = 1.0; /* ratio of output y size to input */
35	greg	1.2
36	greg	1.1	int singlepass = 0; /* true means skip first pass */
37
38			int avghot = 0; /* true means average in bright spots */
39
40			double hotlvl = 1000.0; /* level considered "hot" */
41
42			int npts = 0; /* (half) number of points for stars */
43
44			double spread = 1e-4; /* spread for star points */
45
46			#define TEMPLATE "/usr/tmp/pfXXXXXX"
47
48			char *tfname = NULL;
49
50	greg	1.13	char lampdat = "lamp.tab"; / lamp data file */
51
52	greg	1.1	int xres, yres; /* resolution of input */
53	greg	1.9	double inpaspect = 1.0; /* pixel aspect ratio of input */
54	greg	1.12	int correctaspect = 0; /* aspect ratio correction? */
55	greg	1.1
56	greg	1.16	int wrongformat = 0;
57
58	greg	1.1	int xrad; /* x window size */
59			int yrad; /* y window size */
60
61			int barsize; /* size of input scan bar */
62			COLOR *scanin; / input scan bar */
63			COLOR scanout; / output scan line */
64
65			char *progname;
66
67
68			main(argc, argv)
69			int argc;
70			char **argv;
71			{
72			extern char *mktemp();
73			extern double atof(), pow();
74			extern long ftell();
75	greg	1.9	extern int quit(), headline();
76	greg	1.1	FILE *fin;
77	greg	1.13	float *lampcolor;
78			char *lamptype = NULL;
79	greg	1.1	long fpos;
80	greg	1.9	double outaspect = 0.0;
81	greg	1.1	double d;
82			int i;
83
84			if (signal(SIGINT, quit) == SIG_IGN)
85			signal(SIGINT, SIG_IGN);
86			if (signal(SIGHUP, quit) == SIG_IGN)
87			signal(SIGINT, SIG_IGN);
88			signal(SIGTERM, quit);
89			signal(SIGPIPE, quit);
90			#ifdef SIGXCPU
91			signal(SIGXCPU, quit);
92			signal(SIGXFSZ, quit);
93			#endif
94
95			progname = argv[0];
96
97			for (i = 1; i < argc; i++)
98			if (argv[i][0] == '-')
99			switch (argv[i][1]) {
100			case 'x':
101	greg	1.3	i++;
102	greg	1.5	if (argv[i][0] == '/') {
103	greg	1.4	x_c = 1.0/atof(argv[i]+1);
104	greg	1.5	ncols = 0;
105			} else
106	greg	1.3	ncols = atoi(argv[i]);
107	greg	1.1	break;
108			case 'y':
109	greg	1.3	i++;
110	greg	1.5	if (argv[i][0] == '/') {
111	greg	1.4	y_r = 1.0/atof(argv[i]+1);
112	greg	1.5	nrows = 0;
113			} else
114	greg	1.3	nrows = atoi(argv[i]);
115	greg	1.1	break;
116	greg	1.12	case 'c':
117			correctaspect = !correctaspect;
118			break;
119	greg	1.9	case 'p':
120			i++;
121			outaspect = atof(argv[i]);
122			break;
123	greg	1.1	case 'e':
124			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
125			d = pow(2.0, atof(argv[i+1]));
126			else
127			d = atof(argv[i+1]);
128	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
129			fprintf(stderr,
130			"%s: exposure out of range\n",
131			argv[0]);
132			exit(1);
133			}
134	greg	1.1	switch (argv[i][2]) {
135			case '\0':
136			scalecolor(exposure, d);
137			break;
138			case 'r':
139			colval(exposure,RED) *= d;
140			break;
141			case 'g':
142			colval(exposure,GRN) *= d;
143			break;
144			case 'b':
145			colval(exposure,BLU) *= d;
146			break;
147			default:
148			goto badopt;
149			}
150			i++;
151			break;
152	greg	1.13	case 'f':
153			lampdat = argv[++i];
154			break;
155			case 't':
156			lamptype = argv[++i];
157			break;
158	greg	1.1	case '1':
159			singlepass = 1;
160			break;
161	greg	1.6	case '2':
162			singlepass = 0;
163			break;
164	greg	1.9	case 'n':
165	greg	1.1	npts = atoi(argv[++i]) / 2;
166			break;
167			case 's':
168			spread = atof(argv[++i]);
169			break;
170			case 'a':
171			avghot = !avghot;
172			break;
173			case 'h':
174			hotlvl = atof(argv[++i]);
175			break;
176			case 'r':
177			rad = atof(argv[++i]);
178			break;
179			case 'b':
180			rad = 0.0;
181			break;
182			default:;
183			badopt:
184			fprintf(stderr, "%s: unknown option: %s\n",
185			progname, argv[i]);
186			quit(1);
187			break;
188			}
189			else
190			break;
191	greg	1.14	/* get lamp data (if necessary) */
192			if (lamptype != NULL) {
193			if (loadlamps(lampdat) < 0)
194			quit(1);
195			if ((lampcolor = matchlamp(lamptype)) == NULL) {
196			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
197			quit(1);
198			}
199			colval(exposure,RED) /= lampcolor[0];
200			colval(exposure,GRN) /= lampcolor[1];
201			colval(exposure,BLU) /= lampcolor[2];
202			freelamps();
203			}
204			/* open input file */
205	greg	1.1	if (i == argc) {
206			if (singlepass)
207			fin = stdin;
208			else {
209			tfname = mktemp(TEMPLATE);
210			if ((fin = fopen(tfname, "w+")) == NULL) {
211			fprintf(stderr, "%s: can't create ", progname);
212			fprintf(stderr, "temp file \"%s\"\n", tfname);
213			quit(1);
214			}
215			copyfile(stdin, fin);
216			if (fseek(fin, 0L, 0) == -1) {
217			fprintf(stderr, "%s: seek fail\n", progname);
218			quit(1);
219			}
220			}
221			} else if (i == argc-1) {
222			if ((fin = fopen(argv[i], "r")) == NULL) {
223			fprintf(stderr, "%s: can't open file \"%s\"\n",
224			progname, argv[i]);
225			quit(1);
226			}
227			} else {
228			fprintf(stderr, "%s: bad # file arguments\n", progname);
229			quit(1);
230			}
231	greg	1.9	/* get header */
232	greg	1.16	getheader(fin, headline, NULL);
233			if (wrongformat) {
234			fprintf(stderr, "%s: input must be a Radiance picture\n",
235			progname);
236			quit(1);
237			}
238	greg	1.1	/* add new header info. */
239			printargs(i, argv, stdout);
240			/* get picture size */
241	greg	1.7	if (fgetresolu(&xres, &yres, fin) != (YMAJOR\|YDECR)) {
242	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
243			quit(1);
244			}
245	greg	1.9	/* compute output resolution */
246			if (ncols <= 0)
247	greg	1.4	ncols = x_c*xres + .5;
248	greg	1.9	if (nrows <= 0)
249	greg	1.4	nrows = y_r*yres + .5;
250	greg	1.9	if (outaspect > .01) {
251			d = inpaspect * yres/xres / outaspect;
252			if (d * ncols > nrows)
253			ncols = nrows / d;
254			else
255			nrows = ncols * d;
256			}
257			x_c = (double)ncols/xres;
258			y_r = (double)nrows/yres;
259	greg	1.1
260	greg	1.9	if (singlepass) { /* skip exposure, etc. */
261	greg	1.1	pass1default();
262			pass2(fin);
263			quit(0);
264			}
265
266			fpos = ftell(fin); /* save input file position */
267
268			pass1(fin);
269
270			if (fseek(fin, fpos, 0) == -1) {
271			fprintf(stderr, "%s: seek fail\n", progname);
272			quit(1);
273			}
274			pass2(fin);
275
276			quit(0);
277			}
278
279
280	greg	1.9	headline(s) /* process line from header */
281			char *s;
282			{
283	greg	1.16	char fmt[32];
284
285	greg	1.9	fputs(s, stdout); /* copy to output */
286			if (isaspect(s)) /* get aspect ratio */
287			inpaspect *= aspectval(s);
288	greg	1.16	else if (isformat(s)) {
289			formatval(fmt, s);
290			wrongformat = strcmp(fmt, COLRFMT);
291			}
292	greg	1.9	}
293
294
295	greg	1.1	copyfile(in, out) /* copy a file */
296			register FILE in, out;
297			{
298			register int c;
299
300			while ((c = getc(in)) != EOF)
301			putc(c, out);
302
303			if (ferror(out)) {
304			fprintf(stderr, "%s: write error in copyfile\n", progname);
305			quit(1);
306			}
307			}
308
309
310			pass1(in) /* first pass of picture file */
311			FILE *in;
312			{
313			int i;
314			COLOR *scan;
315
316			pass1init();
317
318			scan = (COLOR )malloc(xressizeof(COLOR));
319			if (scan == NULL) {
320			fprintf(stderr, "%s: out of memory\n", progname);
321			quit(1);
322			}
323			for (i = 0; i < yres; i++) {
324			if (freadscan(scan, xres, in) < 0) {
325			nrows = nrows * i / yres; /* adjust frame */
326			if (nrows <= 0) {
327			fprintf(stderr, "%s: empty frame\n", progname);
328			quit(1);
329			}
330			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
331			progname, 100*i/yres);
332			yres = i;
333	greg	1.11	y_r = (double)nrows/yres;
334	greg	1.1	break;
335			}
336			pass1scan(scan, i);
337			}
338			free((char *)scan);
339			}
340
341
342			pass2(in) /* last pass on file, write to stdout */
343			FILE *in;
344			{
345			int yread;
346			int ycent, xcent;
347			int r, c;
348
349			pass2init();
350			scan2init();
351			yread = 0;
352			for (r = 0; r < nrows; r++) {
353			ycent = (long)r*yres/nrows;
354			while (yread <= ycent+yrad) {
355			if (yread < yres) {
356			if (freadscan(scanin[yread%barsize],
357			xres, in) < 0) {
358			fprintf(stderr,
359			"%s: bad read (y=%d)\n",
360			progname, yres-1-yread);
361			quit(1);
362			}
363			pass2scan(scanin[yread%barsize], yread);
364			}
365			yread++;
366			}
367			for (c = 0; c < ncols; c++) {
368			xcent = (long)c*xres/ncols;
369			if (rad <= 0.0)
370			dobox(scanout[c], xcent, ycent, c, r);
371			else
372			dogauss(scanout[c], xcent, ycent, c, r);
373			}
374			if (fwritescan(scanout, ncols, stdout) < 0) {
375			fprintf(stderr, "%s: write error in pass2\n", progname);
376			quit(1);
377			}
378			}
379	greg	1.10	/* skip leftovers */
380			while (yread < yres) {
381			if (freadscan(scanin[0], xres, in) < 0)
382			break;
383			yread++;
384			}
385	greg	1.1	}
386
387
388			scan2init() /* prepare scanline arrays */
389			{
390	greg	1.15	COLOR ctmp;
391	greg	1.9	double d;
392	greg	1.1	register int i;
393
394			if (rad <= 0.0) {
395			xrad = xres/ncols/2 + 1;
396			yrad = yres/nrows/2 + 1;
397			} else {
398			if (nrows >= yres && ncols >= xres)
399			rad *= (y_r + x_c)/2.0;
400
401			xrad = CHECKRAD*rad/x_c + 1;
402			yrad = CHECKRAD*rad/y_r + 1;
403
404			initmask(); /* initialize filter table */
405			}
406			barsize = 2 * yrad;
407			scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
408			for (i = 0; i < barsize; i++) {
409			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
410			if (scanin[i] == NULL) {
411			fprintf(stderr, "%s: out of memory\n", progname);
412			quit(1);
413			}
414			}
415			scanout = (COLOR )malloc(ncolssizeof(COLOR));
416			if (scanout == NULL) {
417			fprintf(stderr, "%s: out of memory\n", progname);
418			quit(1);
419			}
420	greg	1.15	/* record pixel aspect ratio */
421	greg	1.12	if (!correctaspect) {
422			d = x_c / y_r;
423	greg	1.15	if (!FEQ(d,1.0))
424	greg	1.12	fputaspect(d, stdout);
425			}
426	greg	1.15	/* record exposure */
427	greg	1.9	d = bright(exposure);
428	greg	1.15	if (!FEQ(d,1.0))
429	greg	1.9	fputexpos(d, stdout);
430	greg	1.15	/* record color correction */
431			copycolor(ctmp, exposure);
432			scalecolor(ctmp, 1.0/d);
433			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
434			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
435			fputcolcor(ctmp, stdout);
436	greg	1.1	printf("\n");
437	greg	1.15	/* write out resolution */
438			fputresolu(YMAJOR\|YDECR, ncols, nrows, stdout);
439	greg	1.1	}
440
441
442			quit(code) /* remove temporary file and exit */
443			int code;
444			{
445			if (tfname != NULL)
446			unlink(tfname);
447			exit(code);
448			}