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/* Copyright (c) 1986 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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* pfilt.c - program to post-process picture file. |
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* |
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* 9/26/85 |
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*/ |
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|
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#include <stdio.h> |
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|
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#include <signal.h> |
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|
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#include "color.h" |
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|
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extern char *malloc(); |
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|
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#define CHECKRAD 1.5 /* radius to check for filtering */ |
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|
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COLOR exposure = WHTCOLOR; /* exposure for the frame */ |
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|
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double rad = 0.0; /* output pixel radius for filtering */ |
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|
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int nrows = 0; /* number of rows for output */ |
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int ncols = 0; /* number of columns for output */ |
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|
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double x_c = 1.0; /* ratio of output x size to input */ |
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double y_r = 1.0; /* ratio of output y size to input */ |
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|
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int singlepass = 0; /* true means skip first pass */ |
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|
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int avghot = 0; /* true means average in bright spots */ |
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|
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double hotlvl = 1000.0; /* level considered "hot" */ |
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|
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int npts = 0; /* (half) number of points for stars */ |
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|
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double spread = 1e-4; /* spread for star points */ |
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|
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#define TEMPLATE "/usr/tmp/pfXXXXXX" |
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|
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char *tfname = NULL; |
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|
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int xres, yres; /* resolution of input */ |
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double inpaspect = 1.0; /* pixel aspect ratio of input */ |
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|
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int xrad; /* x window size */ |
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int yrad; /* y window size */ |
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|
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int barsize; /* size of input scan bar */ |
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COLOR **scanin; /* input scan bar */ |
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COLOR *scanout; /* output scan line */ |
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|
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char *progname; |
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|
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|
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main(argc, argv) |
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int argc; |
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char **argv; |
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{ |
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extern char *mktemp(); |
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extern double atof(), pow(); |
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extern long ftell(); |
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extern int quit(), headline(); |
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FILE *fin; |
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long fpos; |
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double outaspect = 0.0; |
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double d; |
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int i; |
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|
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if (signal(SIGINT, quit) == SIG_IGN) |
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signal(SIGINT, SIG_IGN); |
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if (signal(SIGHUP, quit) == SIG_IGN) |
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signal(SIGINT, SIG_IGN); |
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signal(SIGTERM, quit); |
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signal(SIGPIPE, quit); |
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#ifdef SIGXCPU |
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signal(SIGXCPU, quit); |
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signal(SIGXFSZ, quit); |
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#endif |
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|
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progname = argv[0]; |
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|
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'x': |
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i++; |
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if (argv[i][0] == '/') { |
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x_c = 1.0/atof(argv[i]+1); |
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ncols = 0; |
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} else |
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ncols = atoi(argv[i]); |
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break; |
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case 'y': |
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i++; |
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if (argv[i][0] == '/') { |
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y_r = 1.0/atof(argv[i]+1); |
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nrows = 0; |
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} else |
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nrows = atoi(argv[i]); |
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break; |
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case 'p': |
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i++; |
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outaspect = atof(argv[i]); |
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break; |
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case 'e': |
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if (argv[i+1][0] == '+' || argv[i+1][0] == '-') |
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d = pow(2.0, atof(argv[i+1])); |
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else |
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d = atof(argv[i+1]); |
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switch (argv[i][2]) { |
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case '\0': |
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scalecolor(exposure, d); |
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break; |
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case 'r': |
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colval(exposure,RED) *= d; |
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break; |
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case 'g': |
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colval(exposure,GRN) *= d; |
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break; |
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case 'b': |
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colval(exposure,BLU) *= d; |
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break; |
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default: |
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goto badopt; |
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} |
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i++; |
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break; |
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case '1': |
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singlepass = 1; |
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break; |
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case '2': |
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singlepass = 0; |
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break; |
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case 'n': |
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npts = atoi(argv[++i]) / 2; |
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break; |
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case 's': |
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spread = atof(argv[++i]); |
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break; |
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case 'a': |
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avghot = !avghot; |
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break; |
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case 'h': |
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hotlvl = atof(argv[++i]); |
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break; |
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case 'r': |
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rad = atof(argv[++i]); |
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break; |
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case 'b': |
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rad = 0.0; |
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break; |
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default:; |
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badopt: |
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fprintf(stderr, "%s: unknown option: %s\n", |
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progname, argv[i]); |
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quit(1); |
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break; |
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} |
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else |
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break; |
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|
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if (i == argc) { |
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if (singlepass) |
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fin = stdin; |
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else { |
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tfname = mktemp(TEMPLATE); |
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if ((fin = fopen(tfname, "w+")) == NULL) { |
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fprintf(stderr, "%s: can't create ", progname); |
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fprintf(stderr, "temp file \"%s\"\n", tfname); |
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quit(1); |
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} |
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copyfile(stdin, fin); |
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if (fseek(fin, 0L, 0) == -1) { |
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fprintf(stderr, "%s: seek fail\n", progname); |
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quit(1); |
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} |
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} |
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} else if (i == argc-1) { |
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if ((fin = fopen(argv[i], "r")) == NULL) { |
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fprintf(stderr, "%s: can't open file \"%s\"\n", |
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progname, argv[i]); |
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quit(1); |
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} |
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} else { |
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fprintf(stderr, "%s: bad # file arguments\n", progname); |
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quit(1); |
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} |
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/* get header */ |
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getheader(fin, headline); |
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/* add new header info. */ |
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printargs(i, argv, stdout); |
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/* get picture size */ |
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if (fgetresolu(&xres, &yres, fin) != (YMAJOR|YDECR)) { |
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fprintf(stderr, "%s: bad picture size\n", progname); |
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quit(1); |
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} |
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/* compute output resolution */ |
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if (ncols <= 0) |
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ncols = x_c*xres + .5; |
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if (nrows <= 0) |
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nrows = y_r*yres + .5; |
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if (outaspect > .01) { |
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d = inpaspect * yres/xres / outaspect; |
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if (d * ncols > nrows) |
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ncols = nrows / d; |
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else |
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nrows = ncols * d; |
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} |
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x_c = (double)ncols/xres; |
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y_r = (double)nrows/yres; |
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|
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if (singlepass) { /* skip exposure, etc. */ |
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pass1default(); |
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pass2(fin); |
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quit(0); |
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} |
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|
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fpos = ftell(fin); /* save input file position */ |
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|
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pass1(fin); |
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|
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if (fseek(fin, fpos, 0) == -1) { |
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fprintf(stderr, "%s: seek fail\n", progname); |
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quit(1); |
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} |
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pass2(fin); |
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|
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quit(0); |
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} |
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|
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|
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headline(s) /* process line from header */ |
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char *s; |
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{ |
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fputs(s, stdout); /* copy to output */ |
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if (isaspect(s)) /* get aspect ratio */ |
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inpaspect *= aspectval(s); |
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} |
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|
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|
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copyfile(in, out) /* copy a file */ |
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register FILE *in, *out; |
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{ |
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register int c; |
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|
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while ((c = getc(in)) != EOF) |
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putc(c, out); |
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|
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if (ferror(out)) { |
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fprintf(stderr, "%s: write error in copyfile\n", progname); |
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quit(1); |
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} |
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} |
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|
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|
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pass1(in) /* first pass of picture file */ |
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FILE *in; |
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{ |
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int i; |
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COLOR *scan; |
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|
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pass1init(); |
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|
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scan = (COLOR *)malloc(xres*sizeof(COLOR)); |
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if (scan == NULL) { |
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fprintf(stderr, "%s: out of memory\n", progname); |
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quit(1); |
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} |
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for (i = 0; i < yres; i++) { |
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if (freadscan(scan, xres, in) < 0) { |
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nrows = nrows * i / yres; /* adjust frame */ |
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if (nrows <= 0) { |
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fprintf(stderr, "%s: empty frame\n", progname); |
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quit(1); |
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} |
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fprintf(stderr, "%s: warning - partial frame (%d%%)\n", |
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progname, 100*i/yres); |
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yres = i; |
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break; |
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} |
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pass1scan(scan, i); |
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} |
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free((char *)scan); |
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} |
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|
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|
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pass2(in) /* last pass on file, write to stdout */ |
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FILE *in; |
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{ |
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int yread; |
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int ycent, xcent; |
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int r, c; |
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|
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pass2init(); |
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scan2init(); |
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yread = 0; |
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for (r = 0; r < nrows; r++) { |
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ycent = (long)r*yres/nrows; |
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while (yread <= ycent+yrad) { |
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if (yread < yres) { |
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if (freadscan(scanin[yread%barsize], |
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xres, in) < 0) { |
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fprintf(stderr, |
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"%s: bad read (y=%d)\n", |
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progname, yres-1-yread); |
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quit(1); |
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} |
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pass2scan(scanin[yread%barsize], yread); |
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} |
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yread++; |
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} |
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for (c = 0; c < ncols; c++) { |
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xcent = (long)c*xres/ncols; |
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if (rad <= 0.0) |
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dobox(scanout[c], xcent, ycent, c, r); |
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else |
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dogauss(scanout[c], xcent, ycent, c, r); |
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} |
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if (fwritescan(scanout, ncols, stdout) < 0) { |
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fprintf(stderr, "%s: write error in pass2\n", progname); |
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quit(1); |
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} |
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} |
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} |
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|
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|
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scan2init() /* prepare scanline arrays */ |
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{ |
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double d; |
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register int i; |
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|
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if (rad <= 0.0) { |
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xrad = xres/ncols/2 + 1; |
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yrad = yres/nrows/2 + 1; |
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} else { |
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if (nrows >= yres && ncols >= xres) |
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rad *= (y_r + x_c)/2.0; |
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|
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xrad = CHECKRAD*rad/x_c + 1; |
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yrad = CHECKRAD*rad/y_r + 1; |
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|
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initmask(); /* initialize filter table */ |
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} |
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barsize = 2 * yrad; |
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scanin = (COLOR **)malloc(barsize*sizeof(COLOR *)); |
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for (i = 0; i < barsize; i++) { |
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scanin[i] = (COLOR *)malloc(xres*sizeof(COLOR)); |
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if (scanin[i] == NULL) { |
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fprintf(stderr, "%s: out of memory\n", progname); |
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quit(1); |
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} |
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} |
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scanout = (COLOR *)malloc(ncols*sizeof(COLOR)); |
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if (scanout == NULL) { |
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fprintf(stderr, "%s: out of memory\n", progname); |
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quit(1); |
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} |
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/* record pixel aspect and exposure */ |
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d = x_c / y_r; |
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if (d < .99 || d > 1.01) |
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fputaspect(d, stdout); |
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d = bright(exposure); |
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if (d < .995 || d > 1.005) |
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fputexpos(d, stdout); |
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printf("\n"); |
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fputresolu(YMAJOR|YDECR, ncols, nrows, stdout); /* resolution */ |
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} |
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|
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|
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quit(code) /* remove temporary file and exit */ |
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int code; |
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{ |
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if (tfname != NULL) |
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unlink(tfname); |
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exit(code); |
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} |
