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 */

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();
        FILE  *fin;
        long  fpos;
        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 '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 'p':
                                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);
        }
                                        /* copy header */
        copyheader(fin, stdout);
                                        /* add new header info. */
        printargs(i, argv, stdout);
                                        /* get picture size */
        if (fscanf(fin, "-Y %d +X %d\n", &yres, &xres) != 2) {
                fprintf(stderr, "%s: bad picture size\n", progname);
                quit(1);
        }
        if (ncols > 0)
                x_c = (double)ncols/xres;
        else
                ncols = x_c*xres + .5;
        if (nrows > 0)
                y_r = (double)nrows/yres;
        else
                nrows = y_r*yres + .5;

        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);
}


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;
                        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);
                }
        }
}


scan2init()                     /* prepare scanline arrays */
{
        double  e;
        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);
        }
        e = bright(exposure);
        if (e < 1-1e-7 || e > 1+1e-7)           /* record exposure */
                printf("EXPOSURE=%e\n", e);
        printf("\n");
        printf("-Y %d +X %d\n", nrows, ncols);  /* write picture size */
}


quit(code)              /* remove temporary file and exit */
int  code;
{
        if (tfname != NULL)
                unlink(tfname);
        exit(code);
}
Revision:	1.5
Committed:	Thu Apr 13 07:52:50 1989 UTC (35 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+6 -4 lines
Log Message:	resolution ratio supercedes previous specification
#	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
20			extern char *malloc();
21
22			#define CHECKRAD 1.5 /* radius to check for filtering */
23
24			COLOR exposure = WHTCOLOR; /* exposure for the frame */
25
26			double rad = 0.0; /* output pixel radius for filtering */
27
28			int nrows = 0; /* number of rows for output */
29			int ncols = 0; /* number of columns for output */
30
31	greg	1.4	double x_c = 1.0; /* ratio of output x size to input */
32			double y_r = 1.0; /* ratio of output y size to input */
33	greg	1.2
34	greg	1.1	int singlepass = 0; /* true means skip first pass */
35
36			int avghot = 0; /* true means average in bright spots */
37
38			double hotlvl = 1000.0; /* level considered "hot" */
39
40			int npts = 0; /* (half) number of points for stars */
41
42			double spread = 1e-4; /* spread for star points */
43
44			#define TEMPLATE "/usr/tmp/pfXXXXXX"
45
46			char *tfname = NULL;
47
48			int xres, yres; /* resolution of input */
49
50			int xrad; /* x window size */
51			int yrad; /* y window size */
52
53			int barsize; /* size of input scan bar */
54			COLOR *scanin; / input scan bar */
55			COLOR scanout; / output scan line */
56
57			char *progname;
58
59
60			main(argc, argv)
61			int argc;
62			char **argv;
63			{
64			extern char *mktemp();
65			extern double atof(), pow();
66			extern long ftell();
67			extern int quit();
68			FILE *fin;
69			long fpos;
70			double d;
71			int i;
72
73			if (signal(SIGINT, quit) == SIG_IGN)
74			signal(SIGINT, SIG_IGN);
75			if (signal(SIGHUP, quit) == SIG_IGN)
76			signal(SIGINT, SIG_IGN);
77			signal(SIGTERM, quit);
78			signal(SIGPIPE, quit);
79			#ifdef SIGXCPU
80			signal(SIGXCPU, quit);
81			signal(SIGXFSZ, quit);
82			#endif
83
84			progname = argv[0];
85
86			for (i = 1; i < argc; i++)
87			if (argv[i][0] == '-')
88			switch (argv[i][1]) {
89			case 'x':
90	greg	1.3	i++;
91	greg	1.5	if (argv[i][0] == '/') {
92	greg	1.4	x_c = 1.0/atof(argv[i]+1);
93	greg	1.5	ncols = 0;
94			} else
95	greg	1.3	ncols = atoi(argv[i]);
96	greg	1.1	break;
97			case 'y':
98	greg	1.3	i++;
99	greg	1.5	if (argv[i][0] == '/') {
100	greg	1.4	y_r = 1.0/atof(argv[i]+1);
101	greg	1.5	nrows = 0;
102			} else
103	greg	1.3	nrows = atoi(argv[i]);
104	greg	1.1	break;
105			case 'e':
106			if (argv[i+1][0] == '+' \|\| argv[i+1][0] == '-')
107			d = pow(2.0, atof(argv[i+1]));
108			else
109			d = atof(argv[i+1]);
110			switch (argv[i][2]) {
111			case '\0':
112			scalecolor(exposure, d);
113			break;
114			case 'r':
115			colval(exposure,RED) *= d;
116			break;
117			case 'g':
118			colval(exposure,GRN) *= d;
119			break;
120			case 'b':
121			colval(exposure,BLU) *= d;
122			break;
123			default:
124			goto badopt;
125			}
126			i++;
127			break;
128			case '1':
129			singlepass = 1;
130			break;
131			case 'p':
132			npts = atoi(argv[++i]) / 2;
133			break;
134			case 's':
135			spread = atof(argv[++i]);
136			break;
137			case 'a':
138			avghot = !avghot;
139			break;
140			case 'h':
141			hotlvl = atof(argv[++i]);
142			break;
143			case 'r':
144			rad = atof(argv[++i]);
145			break;
146			case 'b':
147			rad = 0.0;
148			break;
149			default:;
150			badopt:
151			fprintf(stderr, "%s: unknown option: %s\n",
152			progname, argv[i]);
153			quit(1);
154			break;
155			}
156			else
157			break;
158
159			if (i == argc) {
160			if (singlepass)
161			fin = stdin;
162			else {
163			tfname = mktemp(TEMPLATE);
164			if ((fin = fopen(tfname, "w+")) == NULL) {
165			fprintf(stderr, "%s: can't create ", progname);
166			fprintf(stderr, "temp file \"%s\"\n", tfname);
167			quit(1);
168			}
169			copyfile(stdin, fin);
170			if (fseek(fin, 0L, 0) == -1) {
171			fprintf(stderr, "%s: seek fail\n", progname);
172			quit(1);
173			}
174			}
175			} else if (i == argc-1) {
176			if ((fin = fopen(argv[i], "r")) == NULL) {
177			fprintf(stderr, "%s: can't open file \"%s\"\n",
178			progname, argv[i]);
179			quit(1);
180			}
181			} else {
182			fprintf(stderr, "%s: bad # file arguments\n", progname);
183			quit(1);
184			}
185			/* copy header */
186			copyheader(fin, stdout);
187			/* add new header info. */
188			printargs(i, argv, stdout);
189			/* get picture size */
190			if (fscanf(fin, "-Y %d +X %d\n", &yres, &xres) != 2) {
191			fprintf(stderr, "%s: bad picture size\n", progname);
192			quit(1);
193			}
194	greg	1.2	if (ncols > 0)
195	greg	1.4	x_c = (double)ncols/xres;
196	greg	1.2	else
197	greg	1.4	ncols = x_c*xres + .5;
198	greg	1.2	if (nrows > 0)
199	greg	1.4	y_r = (double)nrows/yres;
200	greg	1.2	else
201	greg	1.4	nrows = y_r*yres + .5;
202	greg	1.1
203			if (singlepass) {
204			/* skip exposure, etc. */
205			pass1default();
206			pass2(fin);
207			quit(0);
208			}
209
210			fpos = ftell(fin); /* save input file position */
211
212			pass1(fin);
213
214			if (fseek(fin, fpos, 0) == -1) {
215			fprintf(stderr, "%s: seek fail\n", progname);
216			quit(1);
217			}
218			pass2(fin);
219
220			quit(0);
221			}
222
223
224			copyfile(in, out) /* copy a file */
225			register FILE in, out;
226			{
227			register int c;
228
229			while ((c = getc(in)) != EOF)
230			putc(c, out);
231
232			if (ferror(out)) {
233			fprintf(stderr, "%s: write error in copyfile\n", progname);
234			quit(1);
235			}
236			}
237
238
239			pass1(in) /* first pass of picture file */
240			FILE *in;
241			{
242			int i;
243			COLOR *scan;
244
245			pass1init();
246
247			scan = (COLOR )malloc(xressizeof(COLOR));
248			if (scan == NULL) {
249			fprintf(stderr, "%s: out of memory\n", progname);
250			quit(1);
251			}
252			for (i = 0; i < yres; i++) {
253			if (freadscan(scan, xres, in) < 0) {
254			nrows = nrows * i / yres; /* adjust frame */
255			if (nrows <= 0) {
256			fprintf(stderr, "%s: empty frame\n", progname);
257			quit(1);
258			}
259			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
260			progname, 100*i/yres);
261			yres = i;
262			break;
263			}
264			pass1scan(scan, i);
265			}
266			free((char *)scan);
267			}
268
269
270			pass2(in) /* last pass on file, write to stdout */
271			FILE *in;
272			{
273			int yread;
274			int ycent, xcent;
275			int r, c;
276
277			pass2init();
278			scan2init();
279			yread = 0;
280			for (r = 0; r < nrows; r++) {
281			ycent = (long)r*yres/nrows;
282			while (yread <= ycent+yrad) {
283			if (yread < yres) {
284			if (freadscan(scanin[yread%barsize],
285			xres, in) < 0) {
286			fprintf(stderr,
287			"%s: bad read (y=%d)\n",
288			progname, yres-1-yread);
289			quit(1);
290			}
291			pass2scan(scanin[yread%barsize], yread);
292			}
293			yread++;
294			}
295			for (c = 0; c < ncols; c++) {
296			xcent = (long)c*xres/ncols;
297			if (rad <= 0.0)
298			dobox(scanout[c], xcent, ycent, c, r);
299			else
300			dogauss(scanout[c], xcent, ycent, c, r);
301			}
302			if (fwritescan(scanout, ncols, stdout) < 0) {
303			fprintf(stderr, "%s: write error in pass2\n", progname);
304			quit(1);
305			}
306			}
307			}
308
309
310			scan2init() /* prepare scanline arrays */
311			{
312			double e;
313			register int i;
314
315			if (rad <= 0.0) {
316			xrad = xres/ncols/2 + 1;
317			yrad = yres/nrows/2 + 1;
318			} else {
319			if (nrows >= yres && ncols >= xres)
320			rad *= (y_r + x_c)/2.0;
321
322			xrad = CHECKRAD*rad/x_c + 1;
323			yrad = CHECKRAD*rad/y_r + 1;
324
325			initmask(); /* initialize filter table */
326			}
327			barsize = 2 * yrad;
328			scanin = (COLOR *)malloc(barsizesizeof(COLOR *));
329			for (i = 0; i < barsize; i++) {
330			scanin[i] = (COLOR )malloc(xressizeof(COLOR));
331			if (scanin[i] == NULL) {
332			fprintf(stderr, "%s: out of memory\n", progname);
333			quit(1);
334			}
335			}
336			scanout = (COLOR )malloc(ncolssizeof(COLOR));
337			if (scanout == NULL) {
338			fprintf(stderr, "%s: out of memory\n", progname);
339			quit(1);
340			}
341			e = bright(exposure);
342			if (e < 1-1e-7 \|\| e > 1+1e-7) /* record exposure */
343			printf("EXPOSURE=%e\n", e);
344			printf("\n");
345			printf("-Y %d +X %d\n", nrows, ncols); /* write picture size */
346			}
347
348
349			quit(code) /* remove temporary file and exit */
350			int code;
351			{
352			if (tfname != NULL)
353			unlink(tfname);
354			exit(code);
355			}