annotate Meerwald/gen_kund_sig.c @ 4:9cf6ec970448 v0.5

mention filter param.
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Tue, 14 Aug 2007 21:13:11 +0200
parents acb6967ee76d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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1 #include "wm.h"
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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2 #include "signature.h"
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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3
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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4 char *progname;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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5
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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6 void usage(void) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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7 fprintf(stderr, "usage: %s [-e n] [-f n] [-F file] [-l n] [-n n] [-o file] [-q n] [-s n] file\n\n", progname);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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8 fprintf(stderr, "\t-h\t\tprint usage\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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9 fprintf(stderr, "\t-e n\t\twavelet filtering method (default 2)\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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10 fprintf(stderr, "\t-f n\t\tfilter number (default 1)\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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11 fprintf(stderr, "\t-F file\t\tfilter definition file (default 'filter.dat')\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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12 fprintf(stderr, "\t-l n\t\tembedding level (default 1)\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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13 fprintf(stderr, "\t-n n\t\twatermark bit length\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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14 fprintf(stderr, "\t-o file\t\toutput file\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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15 fprintf(stderr, "\t-q n\t\tsignature strength (default 1.0)\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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16 fprintf(stderr, "\t-s n\t\tseed\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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17 exit(0);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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18 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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19
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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20 int main(int argc, char *argv[]) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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21 FILE *in = stdin;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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22 FILE *out = stdout;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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23
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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24 char output_name[MAXPATHLEN] = "(stdout)";
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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25 char input_name[MAXPATHLEN] = "(stdin)";
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26
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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27 int c;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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28 int i;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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29 int l = 1;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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30 int n = 0, nb;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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31 int s = 0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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32 double q = 1.0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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33 int e = 2;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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34 int f = 1;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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35 char F[MAXPATHLEN] = "filter.dat";
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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36
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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37 progname = argv[0];
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38
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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39 #ifdef __EMX__
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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40 _fsetmode(in, "b");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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41 _fsetmode(out, "b");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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42 #endif
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43
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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44 while ((c = getopt(argc, argv, "e:f:F:h?l:n:o:q:s:")) != EOF) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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45 switch (c) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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46 case 'e':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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47 e = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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48 if (e < 0) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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49 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, e);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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50 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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51 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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52 case 'f':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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53 f = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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54 if (f <= 0) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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55 fprintf(stderr, "%s: filter number %d out of range\n", progname, f);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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56 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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57 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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58 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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59 case 'F':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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60 strcpy(F, optarg);
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61 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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62 case 'h':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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63 case '?':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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64 usage();
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65 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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66 case 'l':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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67 l = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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68 if (l < 1) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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69 fprintf(stderr, "%s: embedding level out of range\n", progname);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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70 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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71 }
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72 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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73 case 'n':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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74 n = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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75 if (n < 1 || n > 1000) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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76 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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77 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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78 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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79 if (n % 4 != 0 || (int) sqrt(n / 4) * (int) sqrt(n / 4) != n) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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80 fprintf(stderr, "%s: watermark length not divisible by 4 or not a square number\n", progname);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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81 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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82 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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83 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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84 case 'o':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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85 if ((out = fopen(optarg, "wb")) == NULL) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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86 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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87 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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88 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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89 strcpy(output_name, optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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90 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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91 case 'q':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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92 q = atof(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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93 if (q <= 0.0) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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94 fprintf(stderr, "%s: signature strength factor %f out of range\n", progname, q);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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95 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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96 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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97 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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98 case 's':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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99 s = atoi(optarg);
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100 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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101 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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102 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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103
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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104 argc -= optind;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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105 argv += optind;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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106
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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107 if (argc > 0) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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108 usage();
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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109 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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110 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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111
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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112 if (argc == 1 && *argv[0] != '-')
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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113 if ((in = fopen(argv[0], "rb")) == NULL) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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114 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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115 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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116 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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117 else
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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118 strcpy(input_name, argv[0]);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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119
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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120 if (s)
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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121 srandom(s);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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122 else
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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123 srandom(time(NULL) * getpid());
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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124
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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125 if (n > 0) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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126 nb = fread(signature, sizeof(char), i = NBITSTOBYTES(n), in);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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127 if (nb < i) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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128 fprintf(stderr, "%s: failed to read all %d signature bits from %s\n", progname, n, input_name);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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129 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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130 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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131 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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132 else {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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133 int n_square;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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134 if (fscanf(in, "%128[^\n\r]", signature) == EOF) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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135 fprintf(stderr, "%s: failed to read signature bits from %s\n", progname, input_name);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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136 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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137 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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138 nb = strlen(signature);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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139 n = NBYTESTOBITS(nb);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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140 n_square = (int) sqrt(n) * (int) sqrt(n);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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141 fprintf(stderr, "%s: got %d signature bits, truncated to %d\n", progname, n, n_square);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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142 n = n_square;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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143 nb = NBITSTOBYTES(n);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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144 if (n < 1) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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145 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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146 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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147 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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148 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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149
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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150 fprintf(out, "KDSG\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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151 fprintf(out, "%d\n", n);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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152 fprintf(out, "%d\n", e);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
153 fprintf(out, "%d\n", f);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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154 fprintf(out, "%s\n", F);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
155 fprintf(out, "%d\n", l);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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156 fprintf(out, "%f\n", q);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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157 fprintf(out, "%d\n", random());
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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158 fwrite(signature, sizeof(char), nb, out);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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159 fprintf(out, "\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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160
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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161 fclose(out);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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162
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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163 exit(0);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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164 }

Repositories maintained by Peter Meerwald, pmeerw@pmeerw.net.