Mercurial > hg > wm
annotate Meerwald-dir/gen_xie_sig.c @ 24:9f20bce6184e v0.7
move directories, support netpbm 11
| author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> |
|---|---|
| date | Fri, 20 Dec 2024 13:08:59 +0100 |
| parents | Meerwald/gen_xie_sig.c@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 [-a n] [-e n] [-f n] [-F file] [-l n] [-n n] [-o file] [-s file] [-S n] [-v n] file\n\n", progname); | |
| 8 fprintf(stderr, "\t-a n\t\tembedding strength (default 0.5)\n"); | |
| 9 fprintf(stderr, "\t-e n\t\twavelet filtering method (default 2)\n"); | |
| 10 fprintf(stderr, "\t-f n\t\tfilter number (default 1)\n"); | |
| 11 fprintf(stderr, "\t-F file\t\tfilter definition file (default 'filter.dat')\n"); | |
| 12 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 13 fprintf(stderr, "\t-l n\t\tembedding level (default 5)\n"); | |
| 14 fprintf(stderr, "\t-n n\t\twatermark bit length\n"); | |
| 15 fprintf(stderr, "\t-o file\t\toutput file\n"); | |
| 16 fprintf(stderr, "\t-s file\t\tuse signature file's embedding information\n"); | |
| 17 fprintf(stderr, "\t-S n\t\tseed\n"); | |
| 18 fprintf(stderr, "\t-v n\t\tverbosity level\n"); | |
| 19 exit(0); | |
| 20 } | |
| 21 | |
| 22 int main(int argc, char *argv[]) { | |
| 23 FILE *in = stdin; | |
| 24 FILE *out = stdout; | |
| 25 FILE *sig = NULL; | |
| 26 | |
| 27 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 28 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 29 char signature_name[MAXPATHLEN]; | |
| 30 | |
| 31 int verbose = 0; | |
| 32 int c; | |
| 33 int i; | |
| 34 double a = 0.5; | |
| 35 int l = 5; | |
| 36 int n = 0, nb; | |
| 37 int s = 0; | |
| 38 int e = 2; | |
| 39 int f = 1; | |
| 40 char F[MAXPATHLEN] = "filter.dat"; | |
| 41 | |
| 42 progname = argv[0]; | |
| 43 wm_init(); | |
| 44 | |
| 45 while ((c = getopt(argc, argv, "a:e:f:F:h?l:n:o:s:S:v:")) != EOF) { | |
| 46 switch (c) { | |
| 47 case 'a': | |
| 48 a = atof(optarg); | |
| 49 if (a <= 0.0) { | |
| 50 fprintf(stderr, "%s: embedding strength %f out of range\n", progname, a); | |
| 51 exit(1); | |
| 52 } | |
| 53 break; | |
| 54 case 'e': | |
| 55 e = atoi(optarg); | |
| 56 if (e < 0) { | |
| 57 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, e); | |
| 58 } | |
| 59 break; | |
| 60 case 'f': | |
| 61 f = atoi(optarg); | |
| 62 if (f <= 0) { | |
| 63 fprintf(stderr, "%s: filter number %d out of range\n", progname, f); | |
| 64 exit(1); | |
| 65 } | |
| 66 break; | |
| 67 case 'F': | |
| 68 strcpy(F, optarg); | |
| 69 break; | |
| 70 case 'h': | |
| 71 case '?': | |
| 72 usage(); | |
| 73 break; | |
| 74 case 'l': | |
| 75 l = atoi(optarg); | |
| 76 if (l < 1) { | |
| 77 fprintf(stderr, "%s: embedding level out of range\n", progname); | |
| 78 exit(1); | |
| 79 } | |
| 80 break; | |
| 81 case 'n': | |
| 82 n = atoi(optarg); | |
| 83 if (n < 1 || n > 1000) { | |
| 84 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n); | |
| 85 exit(1); | |
| 86 } | |
| 87 break; | |
| 88 case 'o': | |
| 89 if ((out = fopen(optarg, "wb")) == NULL) { | |
| 90 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 91 exit(1); | |
| 92 } | |
| 93 strcpy(output_name, optarg); | |
| 94 break; | |
| 95 case 's': | |
| 96 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 97 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 98 exit(1); | |
| 99 } | |
| 100 strcpy(signature_name, optarg); | |
| 101 break; | |
| 102 case 'S': | |
| 103 s = atoi(optarg); | |
| 104 break; | |
| 105 case 'v': | |
| 106 verbose = atoi(optarg); | |
| 107 if (verbose < 0) { | |
| 108 fprintf(stderr, "%s: verbosity level %d out of range", progname, verbose); | |
| 109 exit(1); | |
| 110 } | |
| 111 break; | |
| 112 } | |
| 113 } | |
| 114 | |
| 115 argc -= optind; | |
| 116 argv += optind; | |
| 117 | |
| 118 if (argc > 1) { | |
| 119 usage(); | |
| 120 exit(1); | |
| 121 } | |
| 122 | |
| 8 | 123 if (argc == 1 && *argv[0] != '-') { |
| 0 | 124 if ((in = fopen(argv[0], "rb")) == NULL) { |
| 125 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 126 exit(1); | |
| 127 } | |
| 128 else | |
| 129 strcpy(input_name, argv[0]); | |
| 8 | 130 } |
| 0 | 131 |
| 132 if (sig) { | |
| 133 char line[32]; | |
| 134 fgets(line, sizeof(line), sig); | |
| 135 if (strspn(line, "XESG") >= 4) { | |
| 136 if (n == 0) | |
| 137 fscanf(sig, "%d\n", &n); | |
| 138 else | |
| 139 fscanf(sig, "%*d\n"); | |
| 140 if (a == 0.0) | |
| 141 fscanf(sig, "%lf\n", &a); | |
| 142 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
143 fscanf(sig, "%*f\n"); |
| 0 | 144 if (e < 0) |
| 145 fscanf(sig, "%d\n", &e); | |
| 146 else | |
| 147 fscanf(sig, "%*d\n"); | |
| 148 if (f == 0) | |
| 149 fscanf(sig, "%d\n", &f); | |
| 150 else | |
| 151 fscanf(sig, "%*d\n"); | |
| 152 if (!strcmp(F, "")) | |
| 15 | 153 fscanf(sig, "%[^\n\r]\n", F); |
| 0 | 154 else |
| 155 fscanf(sig, "%*[^\n\r]\n"); | |
| 156 if (l == 0) | |
| 157 fscanf(sig, "%d\n", &l); | |
| 158 else | |
| 159 fscanf(sig, "%*d\n"); | |
| 160 } | |
| 161 else { | |
| 162 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 163 exit(1); | |
| 164 } | |
| 8 | 165 fclose(sig); |
| 0 | 166 } |
| 167 | |
| 168 if (s) | |
| 169 srandom(s); | |
| 170 else | |
| 171 srandom(time(NULL) * getpid()); | |
| 172 | |
| 173 if (n > 0) { | |
| 174 nb = fread(signature, sizeof(char), i = NBITSTOBYTES(n), in); | |
| 175 if (nb < i) { | |
| 176 fprintf(stderr, "%s: failed to read all %d signature bits from %s\n", progname, n, input_name); | |
| 177 exit(1); | |
| 178 } | |
| 179 } | |
| 180 else { | |
| 181 if (fscanf(in, "%128[^\n\r]", signature) == EOF) { | |
| 182 fprintf(stderr, "%s: failed to read signature bits from %s\n", progname, input_name); | |
| 183 exit(1); | |
| 184 } | |
| 185 nb = strlen(signature); | |
| 186 n = NBYTESTOBITS(nb); | |
| 187 fprintf(stderr, "%s: got %d signature bits\n", progname, n); | |
| 188 } | |
| 189 | |
| 190 fprintf(out, "XESG\n"); | |
| 191 fprintf(out, "%d\n", n); | |
| 192 fprintf(out, "%f\n", a); | |
| 193 fprintf(out, "%d\n", e); | |
| 194 fprintf(out, "%d\n", f); | |
| 195 fprintf(out, "%s\n", F); | |
| 196 fprintf(out, "%d\n", l); | |
| 8 | 197 fprintf(out, "%ld\n", random()); |
| 0 | 198 fwrite(signature, sizeof(char), nb, out); |
| 199 fprintf(out, "\n"); | |
| 200 | |
| 201 fclose(out); | |
| 202 | |
| 203 exit(0); | |
| 204 } |