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"

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  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 char  *mktemp();
        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:	2.2
Committed:	Thu Dec 19 14:51:52 1991 UTC (32 years, 4 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.1:	+1 -1 lines
Log Message:	eliminated atof declarations for NeXT
#	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	1.1	extern char *malloc();
22	greg	1.13	extern float *matchlamp();
23	greg	1.1
24	greg	1.15	#define FEQ(a,b) ((a) >= .98(b) && (a) <= 1.02(b))
25
26	greg	1.1	#define CHECKRAD 1.5 /* radius to check for filtering */
27
28			COLOR exposure = WHTCOLOR; /* exposure for the frame */
29
30			double rad = 0.0; /* output pixel radius for filtering */
31
32			int nrows = 0; /* number of rows for output */
33			int ncols = 0; /* number of columns for output */
34
35	greg	1.4	double x_c = 1.0; /* ratio of output x size to input */
36			double y_r = 1.0; /* ratio of output y size to input */
37	greg	1.2
38	greg	1.1	int singlepass = 0; /* true means skip first pass */
39
40			int avghot = 0; /* true means average in bright spots */
41
42			double hotlvl = 1000.0; /* level considered "hot" */
43
44			int npts = 0; /* (half) number of points for stars */
45
46			double spread = 1e-4; /* spread for star points */
47
48			#define TEMPLATE "/usr/tmp/pfXXXXXX"
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			extern char *mktemp();
76	greg	2.2	extern double pow();
77	greg	1.1	extern long ftell();
78	greg	1.9	extern int quit(), headline();
79	greg	1.1	FILE *fin;
80	greg	1.13	float *lampcolor;
81			char *lamptype = NULL;
82	greg	1.1	long fpos;
83	greg	1.9	double outaspect = 0.0;
84	greg	1.1	double d;
85	greg	1.18	int i, j;
86	greg	1.1
87			if (signal(SIGINT, quit) == SIG_IGN)
88			signal(SIGINT, SIG_IGN);
89			if (signal(SIGHUP, quit) == SIG_IGN)
90			signal(SIGINT, SIG_IGN);
91			signal(SIGTERM, quit);
92			signal(SIGPIPE, quit);
93			#ifdef SIGXCPU
94			signal(SIGXCPU, quit);
95			signal(SIGXFSZ, quit);
96			#endif
97
98			progname = argv[0];
99
100			for (i = 1; i < argc; i++)
101			if (argv[i][0] == '-')
102			switch (argv[i][1]) {
103			case 'x':
104	greg	1.3	i++;
105	greg	1.5	if (argv[i][0] == '/') {
106	greg	1.4	x_c = 1.0/atof(argv[i]+1);
107	greg	1.5	ncols = 0;
108			} else
109	greg	1.3	ncols = atoi(argv[i]);
110	greg	1.1	break;
111			case 'y':
112	greg	1.3	i++;
113	greg	1.5	if (argv[i][0] == '/') {
114	greg	1.4	y_r = 1.0/atof(argv[i]+1);
115	greg	1.5	nrows = 0;
116			} else
117	greg	1.3	nrows = atoi(argv[i]);
118	greg	1.1	break;
119	greg	1.12	case 'c':
120			correctaspect = !correctaspect;
121			break;
122	greg	1.9	case 'p':
123			i++;
124			outaspect = atof(argv[i]);
125			break;
126	greg	1.1	case 'e':
127			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
128			d = pow(2.0, atof(argv[i+1]));
129			else
130			d = atof(argv[i+1]);
131	greg	1.15	if (d < 1e-20 \|\| d > 1e20) {
132			fprintf(stderr,
133			"%s: exposure out of range\n",
134			argv[0]);
135			exit(1);
136			}
137	greg	1.1	switch (argv[i][2]) {
138			case '\0':
139			scalecolor(exposure, d);
140			break;
141			case 'r':
142			colval(exposure,RED) *= d;
143			break;
144			case 'g':
145			colval(exposure,GRN) *= d;
146			break;
147			case 'b':
148			colval(exposure,BLU) *= d;
149			break;
150			default:
151			goto badopt;
152			}
153			i++;
154			break;
155	greg	1.13	case 'f':
156			lampdat = argv[++i];
157			break;
158			case 't':
159			lamptype = argv[++i];
160			break;
161	greg	1.1	case '1':
162			singlepass = 1;
163			break;
164	greg	1.6	case '2':
165			singlepass = 0;
166			break;
167	greg	1.9	case 'n':
168	greg	1.1	npts = atoi(argv[++i]) / 2;
169			break;
170			case 's':
171			spread = atof(argv[++i]);
172			break;
173			case 'a':
174			avghot = !avghot;
175			break;
176			case 'h':
177			hotlvl = atof(argv[++i]);
178			break;
179			case 'r':
180			rad = atof(argv[++i]);
181			break;
182			case 'b':
183			rad = 0.0;
184			break;
185			default:;
186			badopt:
187			fprintf(stderr, "%s: unknown option: %s\n",
188			progname, argv[i]);
189			quit(1);
190			break;
191			}
192			else
193			break;
194	greg	1.14	/* get lamp data (if necessary) */
195			if (lamptype != NULL) {
196			if (loadlamps(lampdat) < 0)
197			quit(1);
198			if ((lampcolor = matchlamp(lamptype)) == NULL) {
199			fprintf(stderr, "%s: unknown lamp type\n", lamptype);
200			quit(1);
201			}
202	greg	1.18	for (i = 0; i < 3; i++)
203			if (lampcolor[i] > 1e-4)
204			colval(exposure,i) /= lampcolor[i];
205	greg	1.14	freelamps();
206			}
207			/* open input file */
208	greg	1.1	if (i == argc) {
209			if (singlepass)
210			fin = stdin;
211			else {
212			tfname = mktemp(TEMPLATE);
213			if ((fin = fopen(tfname, "w+")) == NULL) {
214			fprintf(stderr, "%s: can't create ", progname);
215			fprintf(stderr, "temp file \"%s\"\n", tfname);
216			quit(1);
217			}
218			copyfile(stdin, fin);
219			if (fseek(fin, 0L, 0) == -1) {
220			fprintf(stderr, "%s: seek fail\n", progname);
221			quit(1);
222			}
223			}
224			} else if (i == argc-1) {
225			if ((fin = fopen(argv[i], "r")) == NULL) {
226			fprintf(stderr, "%s: can't open file \"%s\"\n",
227			progname, argv[i]);
228			quit(1);
229			}
230			} else {
231			fprintf(stderr, "%s: bad # file arguments\n", progname);
232			quit(1);
233			}
234	greg	1.9	/* get header */
235	greg	1.16	getheader(fin, headline, NULL);
236			if (wrongformat) {
237			fprintf(stderr, "%s: input must be a Radiance picture\n",
238			progname);
239			quit(1);
240			}
241	greg	1.1	/* add new header info. */
242			printargs(i, argv, stdout);
243			/* get picture size */
244	greg	1.19	if ((order = fgetresolu(&xres, &yres, fin)) < 0) {
245	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
246			quit(1);
247			}
248	greg	1.19	if (!(order & YMAJOR))
249			inpaspect = 1.0/inpaspect;
250	greg	1.9	/* compute output resolution */
251			if (ncols <= 0)
252	greg	1.4	ncols = x_c*xres + .5;
253	greg	1.9	if (nrows <= 0)
254	greg	1.4	nrows = y_r*yres + .5;
255	greg	1.9	if (outaspect > .01) {
256			d = inpaspect * yres/xres / outaspect;
257			if (d * ncols > nrows)
258			ncols = nrows / d;
259			else
260			nrows = ncols * d;
261			}
262			x_c = (double)ncols/xres;
263			y_r = (double)nrows/yres;
264	greg	1.1
265	greg	1.9	if (singlepass) { /* skip exposure, etc. */
266	greg	1.1	pass1default();
267			pass2(fin);
268			quit(0);
269			}
270
271			fpos = ftell(fin); /* save input file position */
272
273			pass1(fin);
274
275			if (fseek(fin, fpos, 0) == -1) {
276			fprintf(stderr, "%s: seek fail\n", progname);
277			quit(1);
278			}
279			pass2(fin);
280
281			quit(0);
282			}
283
284
285	greg	1.9	headline(s) /* process line from header */
286			char *s;
287			{
288	greg	1.16	char fmt[32];
289
290	greg	1.9	fputs(s, stdout); /* copy to output */
291			if (isaspect(s)) /* get aspect ratio */
292			inpaspect *= aspectval(s);
293	greg	1.16	else if (isformat(s)) {
294			formatval(fmt, s);
295			wrongformat = strcmp(fmt, COLRFMT);
296			}
297	greg	1.9	}
298
299
300	greg	1.1	copyfile(in, out) /* copy a file */
301			register FILE in, out;
302			{
303			register int c;
304
305			while ((c = getc(in)) != EOF)
306			putc(c, out);
307
308			if (ferror(out)) {
309			fprintf(stderr, "%s: write error in copyfile\n", progname);
310			quit(1);
311			}
312			}
313
314
315			pass1(in) /* first pass of picture file */
316			FILE *in;
317			{
318			int i;
319			COLOR *scan;
320
321			pass1init();
322
323			scan = (COLOR )malloc(xressizeof(COLOR));
324			if (scan == NULL) {
325			fprintf(stderr, "%s: out of memory\n", progname);
326			quit(1);
327			}
328			for (i = 0; i < yres; i++) {
329			if (freadscan(scan, xres, in) < 0) {
330			nrows = nrows * i / yres; /* adjust frame */
331			if (nrows <= 0) {
332			fprintf(stderr, "%s: empty frame\n", progname);
333			quit(1);
334			}
335			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
336			progname, 100*i/yres);
337			yres = i;
338	greg	1.11	y_r = (double)nrows/yres;
339	greg	1.1	break;
340			}
341			pass1scan(scan, i);
342			}
343			free((char *)scan);
344			}
345
346
347			pass2(in) /* last pass on file, write to stdout */
348			FILE *in;
349			{
350			int yread;
351			int ycent, xcent;
352			int r, c;
353
354			pass2init();
355			scan2init();
356			yread = 0;
357			for (r = 0; r < nrows; r++) {
358			ycent = (long)r*yres/nrows;
359			while (yread <= ycent+yrad) {
360			if (yread < yres) {
361			if (freadscan(scanin[yread%barsize],
362			xres, in) < 0) {
363			fprintf(stderr,
364			"%s: bad read (y=%d)\n",
365			progname, yres-1-yread);
366			quit(1);
367			}
368			pass2scan(scanin[yread%barsize], yread);
369			}
370			yread++;
371			}
372			for (c = 0; c < ncols; c++) {
373			xcent = (long)c*xres/ncols;
374			if (rad <= 0.0)
375			dobox(scanout[c], xcent, ycent, c, r);
376			else
377			dogauss(scanout[c], xcent, ycent, c, r);
378			}
379			if (fwritescan(scanout, ncols, stdout) < 0) {
380			fprintf(stderr, "%s: write error in pass2\n", progname);
381			quit(1);
382			}
383			}
384	greg	1.10	/* skip leftovers */
385			while (yread < yres) {
386			if (freadscan(scanin[0], xres, in) < 0)
387			break;
388			yread++;
389			}
390	greg	1.1	}
391
392
393			scan2init() /* prepare scanline arrays */
394			{
395	greg	1.15	COLOR ctmp;
396	greg	1.9	double d;
397	greg	1.1	register int i;
398
399			if (rad <= 0.0) {
400			xrad = xres/ncols/2 + 1;
401			yrad = yres/nrows/2 + 1;
402			} else {
403			if (nrows >= yres && ncols >= xres)
404			rad *= (y_r + x_c)/2.0;
405
406			xrad = CHECKRAD*rad/x_c + 1;
407			yrad = CHECKRAD*rad/y_r + 1;
408
409			initmask(); /* initialize filter table */
410			}
411	greg	1.17	barsize = 2*yrad + 1;
412	greg	1.1	scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
413			for (i = 0; i < barsize; i++) {
414			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
415			if (scanin[i] == NULL) {
416			fprintf(stderr, "%s: out of memory\n", progname);
417			quit(1);
418			}
419			}
420			scanout = (COLOR )malloc(ncolssizeof(COLOR));
421			if (scanout == NULL) {
422			fprintf(stderr, "%s: out of memory\n", progname);
423			quit(1);
424			}
425	greg	1.15	/* record pixel aspect ratio */
426	greg	1.12	if (!correctaspect) {
427	greg	1.19	d = order & YMAJOR ? x_c/y_r : y_r/x_c ;
428	greg	1.15	if (!FEQ(d,1.0))
429	greg	1.12	fputaspect(d, stdout);
430			}
431	greg	1.15	/* record exposure */
432	greg	1.9	d = bright(exposure);
433	greg	1.15	if (!FEQ(d,1.0))
434	greg	1.9	fputexpos(d, stdout);
435	greg	1.15	/* record color correction */
436			copycolor(ctmp, exposure);
437			scalecolor(ctmp, 1.0/d);
438			if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) \|\|
439			!FEQ(colval(ctmp,GRN),colval(ctmp,BLU)))
440			fputcolcor(ctmp, stdout);
441	greg	1.1	printf("\n");
442	greg	1.15	/* write out resolution */
443	greg	1.19	fputresolu(order, ncols, nrows, stdout);
444	greg	1.1	}
445
446
447			quit(code) /* remove temporary file and exit */
448			int code;
449			{
450			if (tfname != NULL)
451			unlink(tfname);
452			exit(code);
453			}