Mercurial > hg > wm
annotate Meerwald/cmp_frid2_sig.c @ 22:d8551fb39a5e default tip
Added tag v0.6 for changeset 1c4ccd635a68
| author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> |
|---|---|
| date | Sat, 28 Jan 2023 23:57:51 +0100 |
| parents | 4987db85cfae |
| children |
| rev | line source |
|---|---|
| 0 | 1 #include "wm.h" |
| 2 #include "signature.h" | |
| 3 | |
| 4 char *progname; | |
| 5 | |
| 6 void usage(void) { | |
| 7 fprintf(stderr, "usage: %s [-h] [-C] [-o file] [-v n] -s file file\n\n", progname); | |
| 8 fprintf(stderr, "\t-C\t\toutput correlation only\n"); | |
| 9 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 10 fprintf(stderr, "\t-o file\t\toutput file\n"); | |
| 11 fprintf(stderr, "\t-s file\t\toriginal signature file\n"); | |
| 12 fprintf(stderr, "\t-v n\t\tverbosity level\n"); | |
| 13 exit(0); | |
| 14 } | |
| 15 | |
| 16 int main(int argc, char *argv[]) { | |
| 17 | |
| 18 FILE *in = stdin; | |
| 19 FILE *out = stdout; | |
| 20 FILE *sig = NULL; | |
| 21 | |
| 22 char signature_name[MAXPATHLEN]; | |
| 23 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 24 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 25 | |
| 26 int correlation_only = 0; | |
| 27 | |
| 28 int c, i; | |
| 29 int corr1 = 0, match1 = 0; | |
| 30 int corr2 = 0, match2 = 0; | |
| 31 int verbose = 0; | |
| 32 | |
| 8 | 33 char line[1024]; |
| 0 | 34 |
| 35 progname = argv[0]; | |
| 36 | |
| 37 while ((c = getopt(argc, argv, "h?Co:s:v:")) != EOF) { | |
| 38 switch (c) { | |
| 39 case 'h': | |
| 40 case '?': | |
| 41 usage(); | |
| 42 break; | |
| 43 case 'C': | |
| 44 correlation_only = 1; | |
| 45 break; | |
| 46 case 'o': | |
| 47 if ((out = fopen(optarg, "w")) == NULL) { | |
| 48 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 49 exit(1); | |
| 50 } | |
| 51 strcpy(output_name, optarg); | |
| 52 break; | |
| 53 case 's': | |
| 54 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 55 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 56 exit(1); | |
| 57 } | |
| 58 strcpy(signature_name, optarg); | |
| 59 break; | |
| 60 case 'v': | |
| 61 verbose = atoi(optarg); | |
| 62 if (verbose < 0) { | |
| 63 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); | |
| 64 exit(1); | |
| 65 } | |
| 66 break; | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 argc -= optind; | |
| 71 argv += optind; | |
| 72 | |
| 73 if (argc > 1) { | |
| 74 usage(); | |
| 75 exit(1); | |
| 76 } | |
| 77 | |
| 8 | 78 if (argc == 1 && *argv[0] != '-') { |
| 0 | 79 if ((in = fopen(argv[0], "r")) == NULL) { |
| 80 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 81 exit(1); | |
| 82 } | |
| 83 else | |
| 84 strcpy(input_name, argv[0]); | |
| 8 | 85 } |
| 86 | |
| 0 | 87 if (sig) { |
| 88 fgets(line, sizeof(line), sig); | |
| 89 if (strspn(line, "FR2SG") >= 5) { | |
| 90 fscanf(sig, "%d\n", &nbit_signature); | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
8
diff
changeset
|
91 fscanf(sig, "%*f\n"); |
|
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
8
diff
changeset
|
92 fscanf(sig, "%*f\n"); |
| 0 | 93 fscanf(sig, "%*d\n"); |
| 94 n_signature = NBITSTOBYTES(nbit_signature); | |
| 95 fread(signature, sizeof(char), n_signature, sig); | |
| 96 fscanf(sig, "\n"); | |
| 97 } | |
| 98 else { | |
| 99 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 100 exit(1); | |
| 101 } | |
| 8 | 102 fclose(sig); |
| 0 | 103 } |
| 104 else { | |
| 105 fprintf(stderr, "%s: original signature file not specified, use -s file option\n", progname); | |
| 106 exit(1); | |
| 107 } | |
| 108 | |
| 109 fgets(line, sizeof(line), in); | |
| 110 if (strspn(line, "FR2WM") >= 5) { | |
| 111 fscanf(in, "%d\n", &nbit_signature1); | |
| 112 n_signature1 = NBITSTOBYTES(nbit_signature1); | |
| 113 fread(signature1, sizeof(char), n_signature1, in); | |
| 114 // fscanf(in, "\n"); | |
| 115 fscanf(in, "%d\n", &nbit_signature2); | |
| 116 n_signature2 = NBITSTOBYTES(nbit_signature2); | |
| 117 fread(signature2, sizeof(char), n_signature2, in); | |
| 118 fscanf(in, "\n"); | |
| 119 } | |
| 120 else { | |
| 121 fprintf(stderr, "%s: invalid watermark file %s\n", progname, input_name); | |
| 122 exit(1); | |
| 123 } | |
| 124 | |
| 125 if (verbose > 0) { | |
| 126 fprintf(stderr, "signature length: %d\n", nbit_signature); | |
| 127 fprintf(stderr, "watermark length (low. freq.): %d\n", nbit_signature1); | |
| 128 fprintf(stderr, "watermark length (med. freq.): %d\n", nbit_signature2); | |
| 129 } | |
| 130 | |
| 131 for (i = 0; i < nbit_signature; i++) { | |
| 132 if (get_signature_bit(i) == get_signature1_bit(i)) | |
| 133 corr1++, match1++; | |
| 134 else | |
| 135 corr1--; | |
| 136 if (get_signature_bit(i) == get_signature2_bit(i)) | |
| 137 corr2++, match2++; | |
| 138 else | |
| 139 corr2--; | |
| 140 } | |
| 141 | |
| 142 if (correlation_only) | |
| 143 fprintf(out, "%lf\n", (double) (corr1 + corr2) / (nbit_signature1 + nbit_signature2)); | |
| 144 else { | |
| 145 fprintf(out, "bit matches (low freq.): %d/%d\n", match1, nbit_signature1); | |
| 146 fprintf(out, "correlation (low. freq.): %lf\n", (double) corr1 / nbit_signature1); | |
| 147 fprintf(out, "bit matches (med. freq.): %d/%d\n", match2, nbit_signature2); | |
| 148 fprintf(out, "correlation (med. freq.): %lf\n", (double) corr2 / nbit_signature2); | |
| 149 fprintf(out, "total correlation: %lf\n", (double) (corr1 + corr2) / (nbit_signature1 + nbit_signature2)); | |
| 150 } | |
| 151 | |
| 152 exit(0); | |
| 153 } |