1 |
/* Copyright (c) 1992 Regents of the University of California */ |
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|
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#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ LBL"; |
5 |
#endif |
6 |
|
7 |
/* |
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* pfilt.c - program to post-process picture file. |
9 |
* |
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* 9/26/85 |
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* 6/23/93 Added additional buffers for value spreading |
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*/ |
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|
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#include "standard.h" |
15 |
|
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#include <signal.h> |
17 |
|
18 |
#include "color.h" |
19 |
|
20 |
#include "resolu.h" |
21 |
|
22 |
#include "paths.h" |
23 |
|
24 |
extern float *matchlamp(); |
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|
26 |
#define FEQ(a,b) ((a) >= .98*(b) && (a) <= 1.02*(b)) |
27 |
|
28 |
double CHECKRAD = 1.5; /* radius to check for filtering */ |
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|
30 |
#define THRESHRAD 5.0 /* maximum sample spread in output */ |
31 |
|
32 |
COLOR exposure = WHTCOLOR; /* exposure for the frame */ |
33 |
|
34 |
double rad = 0.0; /* output pixel radius for filtering */ |
35 |
|
36 |
double thresh = 0.0; /* maximum contribution for subpixel */ |
37 |
|
38 |
int nrows = 0; /* number of rows for output */ |
39 |
int ncols = 0; /* number of columns for output */ |
40 |
|
41 |
double x_c = 1.0; /* ratio of output x size to input */ |
42 |
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 = 100.0; /* level considered "hot" */ |
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|
50 |
int npts = 0; /* (half) number of points for stars */ |
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|
52 |
double spread = 1e-4; /* spread for star points */ |
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|
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char *tfname = NULL; |
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|
56 |
char *lampdat = "lamp.tab"; /* lamp data file */ |
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|
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int order; /* scanline ordering of input */ |
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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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int correctaspect = 0; /* aspect ratio correction? */ |
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|
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int wrongformat = 0; |
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|
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int xrad; /* x search radius */ |
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int yrad; /* y search radius */ |
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int xbrad; /* x box size */ |
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int ybrad; /* y box 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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COLOR **scoutbar; /* output scan bar (if thresh > 0) */ |
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float **greybar; /* grey-averaged input values */ |
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int obarsize = 0; /* size of output scan bar */ |
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int orad = 0; /* output window radius */ |
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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 long ftell(); |
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extern int quit(), headline(); |
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FILE *fin; |
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float *lampcolor; |
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char *lamptype = NULL; |
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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, j; |
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#ifdef MSDOS |
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extern int _fmode; |
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_fmode = O_BINARY; |
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setmode(fileno(stdin), O_BINARY); |
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setmode(fileno(stdout), O_BINARY); |
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#endif |
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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); |
109 |
#endif |
110 |
|
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progname = argv[0] = fixargv0(argv[0]); |
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|
113 |
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++; |
118 |
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; |
132 |
case 'c': |
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correctaspect = !correctaspect; |
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break; |
135 |
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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if (d < 1e-20 || d > 1e20) { |
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fprintf(stderr, |
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"%s: exposure out of range\n", |
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argv[0]); |
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exit(1); |
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} |
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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; |
160 |
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; |
168 |
case 'f': |
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lampdat = argv[++i]; |
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break; |
171 |
case 't': |
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lamptype = argv[++i]; |
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break; |
174 |
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; |
186 |
case 'a': |
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avghot = !avghot; |
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break; |
189 |
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; |
195 |
case 'm': |
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thresh = atof(argv[++i]); |
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if (rad <= FTINY) |
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rad = 1.0; |
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break; |
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case 'b': |
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rad = thresh = 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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/* get lamp data (if necessary) */ |
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if (lamptype != NULL) { |
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if (loadlamps(lampdat) < 0) |
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quit(1); |
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if ((lampcolor = matchlamp(lamptype)) == NULL) { |
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fprintf(stderr, "%s: unknown lamp type\n", lamptype); |
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quit(1); |
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} |
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for (i = 0; i < 3; i++) |
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if (lampcolor[i] > 1e-4) |
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colval(exposure,i) /= lampcolor[i]; |
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freelamps(); |
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} |
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/* open input file */ |
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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, NULL); |
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if (wrongformat) { |
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fprintf(stderr, "%s: input must be a Radiance picture\n", |
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progname); |
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quit(1); |
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} |
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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 ((order = fgetresolu(&xres, &yres, fin)) < 0) { |
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fprintf(stderr, "%s: bad picture size\n", progname); |
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quit(1); |
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} |
266 |
if (!(order & YMAJOR)) |
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inpaspect = 1.0/inpaspect; |
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/* compute output resolution */ |
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if (ncols <= 0) |
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ncols = x_c*xres + .5; |
271 |
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; |
275 |
if (d * ncols > nrows) |
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ncols = nrows / d; |
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else |
278 |
nrows = ncols * d; |
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} |
280 |
x_c = (double)ncols/xres; |
281 |
y_r = (double)nrows/yres; |
282 |
|
283 |
if (singlepass) { /* skip exposure, etc. */ |
284 |
pass1default(); |
285 |
pass2(fin); |
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quit(0); |
287 |
} |
288 |
|
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fpos = ftell(fin); /* save input file position */ |
290 |
|
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pass1(fin); |
292 |
|
293 |
if (fseek(fin, fpos, 0) == -1) { |
294 |
fprintf(stderr, "%s: seek fail\n", progname); |
295 |
quit(1); |
296 |
} |
297 |
pass2(fin); |
298 |
|
299 |
quit(0); |
300 |
} |
301 |
|
302 |
|
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headline(s) /* process line from header */ |
304 |
char *s; |
305 |
{ |
306 |
char fmt[32]; |
307 |
|
308 |
fputs(s, stdout); /* copy to output */ |
309 |
if (isaspect(s)) /* get aspect ratio */ |
310 |
inpaspect *= aspectval(s); |
311 |
else if (isexpos(s)) |
312 |
hotlvl *= exposval(s); |
313 |
else if (isformat(s)) { |
314 |
formatval(fmt, s); |
315 |
wrongformat = strcmp(fmt, COLRFMT); |
316 |
} |
317 |
} |
318 |
|
319 |
|
320 |
copyfile(in, out) /* copy a file */ |
321 |
register FILE *in, *out; |
322 |
{ |
323 |
register int c; |
324 |
|
325 |
while ((c = getc(in)) != EOF) |
326 |
putc(c, out); |
327 |
|
328 |
if (ferror(out)) { |
329 |
fprintf(stderr, "%s: write error in copyfile\n", progname); |
330 |
quit(1); |
331 |
} |
332 |
} |
333 |
|
334 |
|
335 |
pass1(in) /* first pass of picture file */ |
336 |
FILE *in; |
337 |
{ |
338 |
int i; |
339 |
COLOR *scan; |
340 |
|
341 |
pass1init(); |
342 |
|
343 |
scan = (COLOR *)malloc(xres*sizeof(COLOR)); |
344 |
if (scan == NULL) { |
345 |
fprintf(stderr, "%s: out of memory\n", progname); |
346 |
quit(1); |
347 |
} |
348 |
for (i = 0; i < yres; i++) { |
349 |
if (freadscan(scan, xres, in) < 0) { |
350 |
nrows = (long)nrows * i / yres; /* adjust frame */ |
351 |
if (nrows <= 0) { |
352 |
fprintf(stderr, "%s: empty frame\n", progname); |
353 |
quit(1); |
354 |
} |
355 |
fprintf(stderr, "%s: warning - partial frame (%d%%)\n", |
356 |
progname, (int)(100L*i/yres)); |
357 |
yres = i; |
358 |
y_r = (double)nrows/yres; |
359 |
break; |
360 |
} |
361 |
pass1scan(scan, i); |
362 |
} |
363 |
free((char *)scan); |
364 |
} |
365 |
|
366 |
|
367 |
pass2(in) /* last pass on file, write to stdout */ |
368 |
FILE *in; |
369 |
{ |
370 |
int yread; |
371 |
int ycent, xcent; |
372 |
int r, c; |
373 |
|
374 |
pass2init(); |
375 |
scan2init(); |
376 |
yread = 0; |
377 |
for (r = 0; r < nrows; r++) { |
378 |
ycent = (long)r*yres/nrows; |
379 |
while (yread <= ycent+yrad) { |
380 |
if (yread < yres) { |
381 |
if (freadscan(scanin[yread%barsize], |
382 |
xres, in) < 0) { |
383 |
fprintf(stderr, |
384 |
"%s: bad read (y=%d)\n", |
385 |
progname, yres-1-yread); |
386 |
quit(1); |
387 |
} |
388 |
pass2scan(scanin[yread%barsize], yread); |
389 |
} |
390 |
yread++; |
391 |
} |
392 |
if (obarsize > 0) |
393 |
scan2sync(r); |
394 |
for (c = 0; c < ncols; c++) { |
395 |
xcent = (long)c*xres/ncols; |
396 |
if (thresh > FTINY) |
397 |
dothresh(xcent, ycent, c, r); |
398 |
else if (rad > FTINY) |
399 |
dogauss(scanout[c], xcent, ycent, c, r); |
400 |
else |
401 |
dobox(scanout[c], xcent, ycent, c, r); |
402 |
} |
403 |
if (scanout != NULL && fwritescan(scanout, ncols, stdout) < 0) { |
404 |
fprintf(stderr, "%s: write error in pass2\n", progname); |
405 |
quit(1); |
406 |
} |
407 |
} |
408 |
/* skip leftover input */ |
409 |
while (yread < yres) { |
410 |
if (freadscan(scanin[0], xres, in) < 0) |
411 |
break; |
412 |
yread++; |
413 |
} |
414 |
scan2flush(); /* flush output */ |
415 |
} |
416 |
|
417 |
|
418 |
scan2init() /* prepare scanline arrays */ |
419 |
{ |
420 |
COLOR ctmp; |
421 |
double d; |
422 |
register int i; |
423 |
|
424 |
xbrad = xres/ncols/2 + 1; |
425 |
ybrad = yres/nrows/2 + 1; |
426 |
if (rad > FTINY) { |
427 |
if (nrows >= yres && ncols >= xres) |
428 |
rad *= (y_r + x_c)/2.0; |
429 |
|
430 |
if (thresh > FTINY) { |
431 |
xrad = CHECKRAD*THRESHRAD*rad/x_c + xbrad; |
432 |
yrad = CHECKRAD*THRESHRAD*rad/y_r + ybrad; |
433 |
orad = CHECKRAD*THRESHRAD*rad + 1; |
434 |
obarsize = 2*orad + 1; |
435 |
} else { |
436 |
xrad = CHECKRAD*rad/x_c + 1; |
437 |
yrad = CHECKRAD*rad/y_r + 1; |
438 |
} |
439 |
initmask(); /* initialize filter table */ |
440 |
} else { |
441 |
xrad = xbrad; |
442 |
yrad = ybrad; |
443 |
} |
444 |
barsize = 2*yrad + 1; |
445 |
scanin = (COLOR **)malloc(barsize*sizeof(COLOR *)); |
446 |
if (scanin == NULL) |
447 |
goto memerr; |
448 |
for (i = 0; i < barsize; i++) { |
449 |
scanin[i] = (COLOR *)malloc(xres*sizeof(COLOR)); |
450 |
if (scanin[i] == NULL) |
451 |
goto memerr; |
452 |
} |
453 |
if (obarsize > 0) { |
454 |
scoutbar = (COLOR **)malloc(obarsize*sizeof(COLOR *)); |
455 |
greybar = (float **)malloc(obarsize*sizeof(float *)); |
456 |
if (scoutbar == NULL | greybar == NULL) |
457 |
goto memerr; |
458 |
for (i = 0; i < obarsize; i++) { |
459 |
scoutbar[i] = (COLOR *)malloc(ncols*sizeof(COLOR)); |
460 |
greybar[i] = (float *)malloc(ncols*sizeof(float)); |
461 |
if (scoutbar[i] == NULL | greybar[i] == NULL) |
462 |
goto memerr; |
463 |
} |
464 |
} else { |
465 |
scanout = (COLOR *)malloc(ncols*sizeof(COLOR)); |
466 |
if (scanout == NULL) |
467 |
goto memerr; |
468 |
} |
469 |
/* record pixel aspect ratio */ |
470 |
if (!correctaspect) { |
471 |
d = order & YMAJOR ? x_c/y_r : y_r/x_c ; |
472 |
if (!FEQ(d,1.0)) |
473 |
fputaspect(d, stdout); |
474 |
} |
475 |
/* record exposure */ |
476 |
d = bright(exposure); |
477 |
if (!FEQ(d,1.0)) |
478 |
fputexpos(d, stdout); |
479 |
/* record color correction */ |
480 |
copycolor(ctmp, exposure); |
481 |
scalecolor(ctmp, 1.0/d); |
482 |
if (!FEQ(colval(ctmp,RED),colval(ctmp,GRN)) || |
483 |
!FEQ(colval(ctmp,GRN),colval(ctmp,BLU))) |
484 |
fputcolcor(ctmp, stdout); |
485 |
printf("\n"); |
486 |
/* write out resolution */ |
487 |
fputresolu(order, ncols, nrows, stdout); |
488 |
return; |
489 |
memerr: |
490 |
fprintf(stderr, "%s: out of memory\n", progname); |
491 |
quit(1); |
492 |
} |
493 |
|
494 |
|
495 |
scan2sync(r) /* synchronize grey averages and output scan */ |
496 |
int r; |
497 |
{ |
498 |
static int nextrow = 0; |
499 |
COLOR ctmp; |
500 |
int ybot; |
501 |
register int c; |
502 |
/* average input scanlines */ |
503 |
while (nextrow < r+orad && nextrow < nrows) { |
504 |
ybot = (long)nextrow*yres/nrows; |
505 |
for (c = 0; c < ncols; c++) { |
506 |
dobox(ctmp, (int)((long)c*xres/ncols),ybot, c,nextrow); |
507 |
greybar[nextrow%obarsize][c] = bright(ctmp); |
508 |
} |
509 |
/* and zero output scanline */ |
510 |
bzero((char *)scoutbar[nextrow%obarsize], ncols*sizeof(COLOR)); |
511 |
nextrow++; |
512 |
} |
513 |
/* point to top scanline for output */ |
514 |
if (r-orad >= 0) |
515 |
scanout = scoutbar[(r-orad)%obarsize]; |
516 |
else |
517 |
scanout = NULL; |
518 |
} |
519 |
|
520 |
|
521 |
scan2flush() /* flush output buffer */ |
522 |
{ |
523 |
register int r; |
524 |
|
525 |
for (r = nrows-orad; r < nrows; r++) |
526 |
if (fwritescan(scoutbar[r%obarsize], ncols, stdout) < 0) |
527 |
break; |
528 |
if (fflush(stdout) < 0) { |
529 |
fprintf(stderr, "%s: write error at end of pass2\n", progname); |
530 |
exit(1); |
531 |
} |
532 |
} |
533 |
|
534 |
|
535 |
quit(code) /* remove temporary file and exit */ |
536 |
int code; |
537 |
{ |
538 |
if (tfname != NULL) |
539 |
unlink(tfname); |
540 |
exit(code); |
541 |
} |