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();

#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;

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

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;
        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]);
                                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 '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;
                        
        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);
                                        /* 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;
{
        fputs(s, stdout);               /* copy to output */
        if (isaspect(s))                /* get aspect ratio */
                inpaspect *= aspectval(s);
}


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 */
{
        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 and exposure */
        if (!correctaspect) {
                d = x_c / y_r;
                if (d < .99 || d > 1.01)
                        fputaspect(d, stdout);
        }
        d = bright(exposure);
        if (d < .995 || d > 1.005)
                fputexpos(d, stdout);
        printf("\n");
        fputresolu(YMAJOR|YDECR, ncols, nrows, stdout); /* resolution */
}


quit(code)              /* remove temporary file and exit */
int  code;
{
        if (tfname != NULL)
                unlink(tfname);
        exit(code);
}
Revision:	1.12
Committed:	Wed Nov 28 11:13:23 1990 UTC (33 years, 4 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.11:	+9 -3 lines
Log Message:	added option to override output of aspect ratio change
#	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
21			#define CHECKRAD 1.5 /* radius to check for filtering */
22
23			COLOR exposure = WHTCOLOR; /* exposure for the frame */
24
25			double rad = 0.0; /* output pixel radius for filtering */
26
27			int nrows = 0; /* number of rows for output */
28			int ncols = 0; /* number of columns for output */
29
30	greg	1.4	double x_c = 1.0; /* ratio of output x size to input */
31			double y_r = 1.0; /* ratio of output y size to input */
32	greg	1.2
33	greg	1.1	int singlepass = 0; /* true means skip first pass */
34
35			int avghot = 0; /* true means average in bright spots */
36
37			double hotlvl = 1000.0; /* level considered "hot" */
38
39			int npts = 0; /* (half) number of points for stars */
40
41			double spread = 1e-4; /* spread for star points */
42
43			#define TEMPLATE "/usr/tmp/pfXXXXXX"
44
45			char *tfname = NULL;
46
47			int xres, yres; /* resolution of input */
48	greg	1.9	double inpaspect = 1.0; /* pixel aspect ratio of input */
49	greg	1.12	int correctaspect = 0; /* aspect ratio correction? */
50	greg	1.1
51			int xrad; /* x window size */
52			int yrad; /* y window size */
53
54			int barsize; /* size of input scan bar */
55			COLOR *scanin; / input scan bar */
56			COLOR scanout; / output scan line */
57
58			char *progname;
59
60
61			main(argc, argv)
62			int argc;
63			char **argv;
64			{
65			extern char *mktemp();
66			extern double atof(), pow();
67			extern long ftell();
68	greg	1.9	extern int quit(), headline();
69	greg	1.1	FILE *fin;
70			long fpos;
71	greg	1.9	double outaspect = 0.0;
72	greg	1.1	double d;
73			int i;
74
75			if (signal(SIGINT, quit) == SIG_IGN)
76			signal(SIGINT, SIG_IGN);
77			if (signal(SIGHUP, quit) == SIG_IGN)
78			signal(SIGINT, SIG_IGN);
79			signal(SIGTERM, quit);
80			signal(SIGPIPE, quit);
81			#ifdef SIGXCPU
82			signal(SIGXCPU, quit);
83			signal(SIGXFSZ, quit);
84			#endif
85
86			progname = argv[0];
87
88			for (i = 1; i < argc; i++)
89			if (argv[i][0] == '-')
90			switch (argv[i][1]) {
91			case 'x':
92	greg	1.3	i++;
93	greg	1.5	if (argv[i][0] == '/') {
94	greg	1.4	x_c = 1.0/atof(argv[i]+1);
95	greg	1.5	ncols = 0;
96			} else
97	greg	1.3	ncols = atoi(argv[i]);
98	greg	1.1	break;
99			case 'y':
100	greg	1.3	i++;
101	greg	1.5	if (argv[i][0] == '/') {
102	greg	1.4	y_r = 1.0/atof(argv[i]+1);
103	greg	1.5	nrows = 0;
104			} else
105	greg	1.3	nrows = atoi(argv[i]);
106	greg	1.1	break;
107	greg	1.12	case 'c':
108			correctaspect = !correctaspect;
109			break;
110	greg	1.9	case 'p':
111			i++;
112			outaspect = atof(argv[i]);
113			break;
114	greg	1.1	case 'e':
115			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
116			d = pow(2.0, atof(argv[i+1]));
117			else
118			d = atof(argv[i+1]);
119			switch (argv[i][2]) {
120			case '\0':
121			scalecolor(exposure, d);
122			break;
123			case 'r':
124			colval(exposure,RED) *= d;
125			break;
126			case 'g':
127			colval(exposure,GRN) *= d;
128			break;
129			case 'b':
130			colval(exposure,BLU) *= d;
131			break;
132			default:
133			goto badopt;
134			}
135			i++;
136			break;
137			case '1':
138			singlepass = 1;
139			break;
140	greg	1.6	case '2':
141			singlepass = 0;
142			break;
143	greg	1.9	case 'n':
144	greg	1.1	npts = atoi(argv[++i]) / 2;
145			break;
146			case 's':
147			spread = atof(argv[++i]);
148			break;
149			case 'a':
150			avghot = !avghot;
151			break;
152			case 'h':
153			hotlvl = atof(argv[++i]);
154			break;
155			case 'r':
156			rad = atof(argv[++i]);
157			break;
158			case 'b':
159			rad = 0.0;
160			break;
161			default:;
162			badopt:
163			fprintf(stderr, "%s: unknown option: %s\n",
164			progname, argv[i]);
165			quit(1);
166			break;
167			}
168			else
169			break;
170
171			if (i == argc) {
172			if (singlepass)
173			fin = stdin;
174			else {
175			tfname = mktemp(TEMPLATE);
176			if ((fin = fopen(tfname, "w+")) == NULL) {
177			fprintf(stderr, "%s: can't create ", progname);
178			fprintf(stderr, "temp file \"%s\"\n", tfname);
179			quit(1);
180			}
181			copyfile(stdin, fin);
182			if (fseek(fin, 0L, 0) == -1) {
183			fprintf(stderr, "%s: seek fail\n", progname);
184			quit(1);
185			}
186			}
187			} else if (i == argc-1) {
188			if ((fin = fopen(argv[i], "r")) == NULL) {
189			fprintf(stderr, "%s: can't open file \"%s\"\n",
190			progname, argv[i]);
191			quit(1);
192			}
193			} else {
194			fprintf(stderr, "%s: bad # file arguments\n", progname);
195			quit(1);
196			}
197	greg	1.9	/* get header */
198			getheader(fin, headline);
199	greg	1.1	/* add new header info. */
200			printargs(i, argv, stdout);
201			/* get picture size */
202	greg	1.7	if (fgetresolu(&xres, &yres, fin) != (YMAJOR\|YDECR)) {
203	greg	1.1	fprintf(stderr, "%s: bad picture size\n", progname);
204			quit(1);
205			}
206	greg	1.9	/* compute output resolution */
207			if (ncols <= 0)
208	greg	1.4	ncols = x_c*xres + .5;
209	greg	1.9	if (nrows <= 0)
210	greg	1.4	nrows = y_r*yres + .5;
211	greg	1.9	if (outaspect > .01) {
212			d = inpaspect * yres/xres / outaspect;
213			if (d * ncols > nrows)
214			ncols = nrows / d;
215			else
216			nrows = ncols * d;
217			}
218			x_c = (double)ncols/xres;
219			y_r = (double)nrows/yres;
220	greg	1.1
221	greg	1.9	if (singlepass) { /* skip exposure, etc. */
222	greg	1.1	pass1default();
223			pass2(fin);
224			quit(0);
225			}
226
227			fpos = ftell(fin); /* save input file position */
228
229			pass1(fin);
230
231			if (fseek(fin, fpos, 0) == -1) {
232			fprintf(stderr, "%s: seek fail\n", progname);
233			quit(1);
234			}
235			pass2(fin);
236
237			quit(0);
238			}
239
240
241	greg	1.9	headline(s) /* process line from header */
242			char *s;
243			{
244			fputs(s, stdout); /* copy to output */
245			if (isaspect(s)) /* get aspect ratio */
246			inpaspect *= aspectval(s);
247			}
248
249
250	greg	1.1	copyfile(in, out) /* copy a file */
251			register FILE in, out;
252			{
253			register int c;
254
255			while ((c = getc(in)) != EOF)
256			putc(c, out);
257
258			if (ferror(out)) {
259			fprintf(stderr, "%s: write error in copyfile\n", progname);
260			quit(1);
261			}
262			}
263
264
265			pass1(in) /* first pass of picture file */
266			FILE *in;
267			{
268			int i;
269			COLOR *scan;
270
271			pass1init();
272
273			scan = (COLOR )malloc(xressizeof(COLOR));
274			if (scan == NULL) {
275			fprintf(stderr, "%s: out of memory\n", progname);
276			quit(1);
277			}
278			for (i = 0; i < yres; i++) {
279			if (freadscan(scan, xres, in) < 0) {
280			nrows = nrows * i / yres; /* adjust frame */
281			if (nrows <= 0) {
282			fprintf(stderr, "%s: empty frame\n", progname);
283			quit(1);
284			}
285			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
286			progname, 100*i/yres);
287			yres = i;
288	greg	1.11	y_r = (double)nrows/yres;
289	greg	1.1	break;
290			}
291			pass1scan(scan, i);
292			}
293			free((char *)scan);
294			}
295
296
297			pass2(in) /* last pass on file, write to stdout */
298			FILE *in;
299			{
300			int yread;
301			int ycent, xcent;
302			int r, c;
303
304			pass2init();
305			scan2init();
306			yread = 0;
307			for (r = 0; r < nrows; r++) {
308			ycent = (long)r*yres/nrows;
309			while (yread <= ycent+yrad) {
310			if (yread < yres) {
311			if (freadscan(scanin[yread%barsize],
312			xres, in) < 0) {
313			fprintf(stderr,
314			"%s: bad read (y=%d)\n",
315			progname, yres-1-yread);
316			quit(1);
317			}
318			pass2scan(scanin[yread%barsize], yread);
319			}
320			yread++;
321			}
322			for (c = 0; c < ncols; c++) {
323			xcent = (long)c*xres/ncols;
324			if (rad <= 0.0)
325			dobox(scanout[c], xcent, ycent, c, r);
326			else
327			dogauss(scanout[c], xcent, ycent, c, r);
328			}
329			if (fwritescan(scanout, ncols, stdout) < 0) {
330			fprintf(stderr, "%s: write error in pass2\n", progname);
331			quit(1);
332			}
333			}
334	greg	1.10	/* skip leftovers */
335			while (yread < yres) {
336			if (freadscan(scanin[0], xres, in) < 0)
337			break;
338			yread++;
339			}
340	greg	1.1	}
341
342
343			scan2init() /* prepare scanline arrays */
344			{
345	greg	1.9	double d;
346	greg	1.1	register int i;
347
348			if (rad <= 0.0) {
349			xrad = xres/ncols/2 + 1;
350			yrad = yres/nrows/2 + 1;
351			} else {
352			if (nrows >= yres && ncols >= xres)
353			rad *= (y_r + x_c)/2.0;
354
355			xrad = CHECKRAD*rad/x_c + 1;
356			yrad = CHECKRAD*rad/y_r + 1;
357
358			initmask(); /* initialize filter table */
359			}
360			barsize = 2 * yrad;
361			scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
362			for (i = 0; i < barsize; i++) {
363			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
364			if (scanin[i] == NULL) {
365			fprintf(stderr, "%s: out of memory\n", progname);
366			quit(1);
367			}
368			}
369			scanout = (COLOR )malloc(ncolssizeof(COLOR));
370			if (scanout == NULL) {
371			fprintf(stderr, "%s: out of memory\n", progname);
372			quit(1);
373			}
374	greg	1.9	/* record pixel aspect and exposure */
375	greg	1.12	if (!correctaspect) {
376			d = x_c / y_r;
377			if (d < .99 \|\| d > 1.01)
378			fputaspect(d, stdout);
379			}
380	greg	1.9	d = bright(exposure);
381			if (d < .995 \|\| d > 1.005)
382			fputexpos(d, stdout);
383	greg	1.1	printf("\n");
384	greg	1.7	fputresolu(YMAJOR\|YDECR, ncols, nrows, stdout); /* resolution */
385	greg	1.1	}
386
387
388			quit(code) /* remove temporary file and exit */
389			int code;
390			{
391			if (tfname != NULL)
392			unlink(tfname);
393			exit(code);
394			}