src/px/pfilt.c

/* Copyright (c) 1991 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"

#include  "resolu.h"

#include  "paths.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 */

char  *tfname = NULL;

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

int  order;                     /* scanline ordering of input */
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 double  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, j;

        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);
                }
                for (i = 0; i < 3; i++)
                        if (lampcolor[i] > 1e-4)
                                colval(exposure,i) /= lampcolor[i];
                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 ((order = fgetresolu(&xres, &yres, fin)) < 0) {
                fprintf(stderr, "%s: bad picture size\n", progname);
                quit(1);
        }
        if (!(order & YMAJOR))
                inpaspect = 1.0/inpaspect;
                                        /* 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 + 1;
        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 = order & YMAJOR ? x_c/y_r : y_r/x_c ;
                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(order, ncols, nrows, stdout);
}


quit(code)              /* remove temporary file and exit */
int  code;
{
        if (tfname != NULL)
                unlink(tfname);
        exit(code);
}
Revision:	2.3
Committed:	Tue Sep 8 15:33:08 1992 UTC (31 years, 7 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.2:	+2 -3 lines
Log Message:	used TEMPLATE defined in paths.h for pfilt.c
#	User	Rev	Content
1	greg	1.18	/* Copyright (c) 1991 Regents of the University of California */
2	greg	1.1
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	greg	1.19	#include "resolu.h"
20
21	greg	2.3	#include "paths.h"
22
23	greg	1.1	extern char *malloc();
24	greg	1.13	extern float *matchlamp();
25	greg	1.1
26	greg	1.15	#define FEQ(a,b) ((a) >= .98(b) && (a) <= 1.02(b))
27
28	greg	1.1	#define CHECKRAD 1.5 /* radius to check for filtering */
29
30			COLOR exposure = WHTCOLOR; /* exposure for the frame */
31
32			double rad = 0.0; /* output pixel radius for filtering */
33
34			int nrows = 0; /* number of rows for output */
35			int ncols = 0; /* number of columns for output */
36
37	greg	1.4	double x_c = 1.0; /* ratio of output x size to input */
38			double y_r = 1.0; /* ratio of output y size to input */
39	greg	1.2
40	greg	1.1	int singlepass = 0; /* true means skip first pass */
41
42			int avghot = 0; /* true means average in bright spots */
43
44			double hotlvl = 1000.0; /* level considered "hot" */
45
46			int npts = 0; /* (half) number of points for stars */
47
48			double spread = 1e-4; /* spread for star points */
49
50			char *tfname = NULL;
51
52	greg	1.13	char lampdat = "lamp.tab"; / lamp data file */
53
54	greg	1.19	int order; /* scanline ordering of input */
55	greg	1.1	int xres, yres; /* resolution of input */
56	greg	1.9	double inpaspect = 1.0; /* pixel aspect ratio of input */
57	greg	1.12	int correctaspect = 0; /* aspect ratio correction? */
58	greg	1.1
59	greg	1.16	int wrongformat = 0;
60
61	greg	1.1	int xrad; /* x window size */
62			int yrad; /* y window size */
63
64			int barsize; /* size of input scan bar */
65			COLOR *scanin; / input scan bar */
66			COLOR scanout; / output scan line */
67
68			char *progname;
69
70
71			main(argc, argv)
72			int argc;
73			char **argv;
74			{
75	greg	2.2	extern double pow();
76	greg	1.1	extern long ftell();
77	greg	1.9	extern int quit(), headline();
78	greg	1.1	FILE *fin;
79	greg	1.13	float *lampcolor;
80			char *lamptype = NULL;
81	greg	1.1	long fpos;
82	greg	1.9	double outaspect = 0.0;
83	greg	1.1	double d;
84	greg	1.18	int i, j;
85	greg	1.1
86			if (signal(SIGINT, quit) == SIG_IGN)
87			signal(SIGINT, SIG_IGN);
88			if (signal(SIGHUP, quit) == SIG_IGN)
89			signal(SIGINT, SIG_IGN);
90			signal(SIGTERM, quit);
91			signal(SIGPIPE, quit);
92			#ifdef SIGXCPU
93			signal(SIGXCPU, quit);
94			signal(SIGXFSZ, quit);
95			#endif
96
97			progname = argv[0];
98
99			for (i = 1; i < argc; i++)
100			if (argv[i][0] == '-')
101			switch (argv[i][1]) {
102			case 'x':
103	greg	1.3	i++;
104	greg	1.5	if (argv[i][0] == '/') {
105	greg	1.4	x_c = 1.0/atof(argv[i]+1);
106	greg	1.5	ncols = 0;
107			} else
108	greg	1.3	ncols = atoi(argv[i]);
109	greg	1.1	break;
110			case 'y':
111	greg	1.3	i++;
112	greg	1.5	if (argv[i][0] == '/') {
113	greg	1.4	y_r = 1.0/atof(argv[i]+1);
114	greg	1.5	nrows = 0;
115			} else
116	greg	1.3	nrows = atoi(argv[i]);
117	greg	1.1	break;
118	greg	1.12	case 'c':
119			correctaspect = !correctaspect;
120			break;
121	greg	1.9	case 'p':
122			i++;
123			outaspect = atof(argv[i]);
124			break;
125	greg	1.1	case 'e':
126			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
127			d = pow(2.0, atof(argv[i+1]));
128			else
129			d = atof(argv[i+1]);
130	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
131			fprintf(stderr,
132			"%s: exposure out of range\n",
133			argv[0]);
134			exit(1);
135			}
136	greg	1.1	switch (argv[i][2]) {
137			case '\0':
138			scalecolor(exposure, d);
139			break;
140			case 'r':
141			colval(exposure,RED) *= d;
142			break;
143			case 'g':
144			colval(exposure,GRN) *= d;
145			break;
146			case 'b':
147			colval(exposure,BLU) *= d;
148			break;
149			default:
150			goto badopt;
151			}
152			i++;
153			break;
154	greg	1.13	case 'f':
155			lampdat = argv[++i];
156			break;
157			case 't':
158			lamptype = argv[++i];
159			break;
160	greg	1.1	case '1':
161			singlepass = 1;
162			break;
163	greg	1.6	case '2':
164			singlepass = 0;
165			break;
166	greg	1.9	case 'n':
167	greg	1.1	npts = atoi(argv[++i]) / 2;
168			break;
169			case 's':
170			spread = atof(argv[++i]);
171			break;
172			case 'a':
173			avghot = !avghot;
174			break;
175			case 'h':
176			hotlvl = atof(argv[++i]);
177			break;
178			case 'r':
179			rad = atof(argv[++i]);
180			break;
181			case 'b':
182			rad = 0.0;
183			break;
184			default:;
185			badopt:
186			fprintf(stderr, "%s: unknown option: %s\n",
187			progname, argv[i]);
188			quit(1);
189			break;
190			}
191			else
192			break;
193	greg	1.14	/* get lamp data (if necessary) */
194			if (lamptype != NULL) {
195			if (loadlamps(lampdat) < 0)
196			quit(1);
197			if ((lampcolor = matchlamp(lamptype)) == NULL) {
198			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
199			quit(1);
200			}
201	greg	1.18	for (i = 0; i < 3; i++)
202			if (lampcolor[i] > 1e-4)
203			colval(exposure,i) /= lampcolor[i];
204	greg	1.14	freelamps();
205			}
206			/* open input file */
207	greg	1.1	if (i == argc) {
208			if (singlepass)
209			fin = stdin;
210			else {
211			tfname = mktemp(TEMPLATE);
212			if ((fin = fopen(tfname, "w+")) == NULL) {
213			fprintf(stderr, "%s: can't create ", progname);
214			fprintf(stderr, "temp file \"%s\"\n", tfname);
215			quit(1);
216			}
217			copyfile(stdin, fin);
218			if (fseek(fin, 0L, 0) == -1) {
219			fprintf(stderr, "%s: seek fail\n", progname);
220			quit(1);
221			}
222			}
223			} else if (i == argc-1) {
224			if ((fin = fopen(argv[i], "r")) == NULL) {
225			fprintf(stderr, "%s: can't open file \"%s\"\n",
226			progname, argv[i]);
227			quit(1);
228			}
229			} else {
230			fprintf(stderr, "%s: bad # file arguments\n", progname);
231			quit(1);
232			}
233	greg	1.9	/* get header */
234	greg	1.16	getheader(fin, headline, NULL);
235			if (wrongformat) {
236			fprintf(stderr, "%s: input must be a Radiance picture\n",
237			progname);
238			quit(1);
239			}
240	greg	1.1	/* add new header info. */
241			printargs(i, argv, stdout);
242			/* get picture size */
243	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
244	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
245			quit(1);
246			}
247	greg	1.19	if (!(order & YMAJOR))
248			inpaspect = 1.0/inpaspect;
249	greg	1.9	/* compute output resolution */
250			if (ncols <= 0)
251	greg	1.4	ncols = x_c*xres + .5;
252	greg	1.9	if (nrows <= 0)
253	greg	1.4	nrows = y_r*yres + .5;
254	greg	1.9	if (outaspect > .01) {
255			d = inpaspect * yres/xres / outaspect;
256			if (d * ncols > nrows)
257			ncols = nrows / d;
258			else
259			nrows = ncols * d;
260			}
261			x_c = (double)ncols/xres;
262			y_r = (double)nrows/yres;
263	greg	1.1
264	greg	1.9	if (singlepass) { /* skip exposure, etc. */
265	greg	1.1	pass1default();
266			pass2(fin);
267			quit(0);
268			}
269
270			fpos = ftell(fin); /* save input file position */
271
272			pass1(fin);
273
274			if (fseek(fin, fpos, 0) == -1) {
275			fprintf(stderr, "%s: seek fail\n", progname);
276			quit(1);
277			}
278			pass2(fin);
279
280			quit(0);
281			}
282
283
284	greg	1.9	headline(s) /* process line from header */
285			char *s;
286			{
287	greg	1.16	char fmt[32];
288
289	greg	1.9	fputs(s, stdout); /* copy to output */
290			if (isaspect(s)) /* get aspect ratio */
291			inpaspect *= aspectval(s);
292	greg	1.16	else if (isformat(s)) {
293			formatval(fmt, s);
294			wrongformat = strcmp(fmt, COLRFMT);
295			}
296	greg	1.9	}
297
298
299	greg	1.1	copyfile(in, out) /* copy a file */
300			register FILE in, out;
301			{
302			register int c;
303
304			while ((c = getc(in)) != EOF)
305			putc(c, out);
306
307			if (ferror(out)) {
308			fprintf(stderr, "%s: write error in copyfile\n", progname);
309			quit(1);
310			}
311			}
312
313
314			pass1(in) /* first pass of picture file */
315			FILE *in;
316			{
317			int i;
318			COLOR *scan;
319
320			pass1init();
321
322			scan = (COLOR )malloc(xressizeof(COLOR));
323			if (scan == NULL) {
324			fprintf(stderr, "%s: out of memory\n", progname);
325			quit(1);
326			}
327			for (i = 0; i < yres; i++) {
328			if (freadscan(scan, xres, in) < 0) {
329			nrows = nrows * i / yres; /* adjust frame */
330			if (nrows <= 0) {
331			fprintf(stderr, "%s: empty frame\n", progname);
332			quit(1);
333			}
334			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
335			progname, 100*i/yres);
336			yres = i;
337	greg	1.11	y_r = (double)nrows/yres;
338	greg	1.1	break;
339			}
340			pass1scan(scan, i);
341			}
342			free((char *)scan);
343			}
344
345
346			pass2(in) /* last pass on file, write to stdout */
347			FILE *in;
348			{
349			int yread;
350			int ycent, xcent;
351			int r, c;
352
353			pass2init();
354			scan2init();
355			yread = 0;
356			for (r = 0; r < nrows; r++) {
357			ycent = (long)r*yres/nrows;
358			while (yread <= ycent+yrad) {
359			if (yread < yres) {
360			if (freadscan(scanin[yread%barsize],
361			xres, in) < 0) {
362			fprintf(stderr,
363			"%s: bad read (y=%d)\n",
364			progname, yres-1-yread);
365			quit(1);
366			}
367			pass2scan(scanin[yread%barsize], yread);
368			}
369			yread++;
370			}
371			for (c = 0; c < ncols; c++) {
372			xcent = (long)c*xres/ncols;
373			if (rad <= 0.0)
374			dobox(scanout[c], xcent, ycent, c, r);
375			else
376			dogauss(scanout[c], xcent, ycent, c, r);
377			}
378			if (fwritescan(scanout, ncols, stdout) < 0) {
379			fprintf(stderr, "%s: write error in pass2\n", progname);
380			quit(1);
381			}
382			}
383	greg	1.10	/* skip leftovers */
384			while (yread < yres) {
385			if (freadscan(scanin[0], xres, in) < 0)
386			break;
387			yread++;
388			}
389	greg	1.1	}
390
391
392			scan2init() /* prepare scanline arrays */
393			{
394	greg	1.15	COLOR ctmp;
395	greg	1.9	double d;
396	greg	1.1	register int i;
397
398			if (rad <= 0.0) {
399			xrad = xres/ncols/2 + 1;
400			yrad = yres/nrows/2 + 1;
401			} else {
402			if (nrows >= yres && ncols >= xres)
403			rad *= (y_r + x_c)/2.0;
404
405			xrad = CHECKRAD*rad/x_c + 1;
406			yrad = CHECKRAD*rad/y_r + 1;
407
408			initmask(); /* initialize filter table */
409			}
410	greg	1.17	barsize = 2*yrad + 1;
411	greg	1.1	scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
412			for (i = 0; i < barsize; i++) {
413			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
414			if (scanin[i] == NULL) {
415			fprintf(stderr, "%s: out of memory\n", progname);
416			quit(1);
417			}
418			}
419			scanout = (COLOR )malloc(ncolssizeof(COLOR));
420			if (scanout == NULL) {
421			fprintf(stderr, "%s: out of memory\n", progname);
422			quit(1);
423			}
424	greg	1.15	/* record pixel aspect ratio */
425	greg	1.12	if (!correctaspect) {
426	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
427	greg	1.15	if (!FEQ(d,1.0))
428	greg	1.12	fputaspect(d, stdout);
429			}
430	greg	1.15	/* record exposure */
431	greg	1.9	d = bright(exposure);
432	greg	1.15	if (!FEQ(d,1.0))
433	greg	1.9	fputexpos(d, stdout);
434	greg	1.15	/* record color correction */
435			copycolor(ctmp, exposure);
436			scalecolor(ctmp, 1.0/d);
437			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
438			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
439			fputcolcor(ctmp, stdout);
440	greg	1.1	printf("\n");
441	greg	1.15	/* write out resolution */
442	greg	1.19	fputresolu(order, ncols, nrows, stdout);
443	greg	1.1	}
444
445
446			quit(code) /* remove temporary file and exit */
447			int code;
448			{
449			if (tfname != NULL)
450			unlink(tfname);
451			exit(code);
452			}