Mercurial > hg > wm
annotate Meerwald/wm_corvi_e.c @ 21:1c4ccd635a68 v0.6
ignore *.swp
| author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> |
|---|---|
| date | Sat, 28 Jan 2023 23:57:40 +0100 |
| parents | 4987db85cfae |
| children |
| rev | line source |
|---|---|
| 0 | 1 #include "wm.h" |
| 2 #include "dwt.h" | |
| 3 #include "pgm.h" | |
| 4 | |
| 5 char *progname; | |
| 6 | |
| 7 void usage(void) { | |
| 8 fprintf(stderr, "usage: %s [-a n] [-e n] [-f n] [-F n] [-h] [-o file] [-v n] -s file file\n\n", progname); | |
| 9 fprintf(stderr, "\t-a n\t\talpha factor/embedding strength\n"); | |
| 10 fprintf(stderr, "\t-e n\t\twavelet filtering method\n"); | |
| 11 fprintf(stderr, "\t-f n\t\tfilter number\n"); | |
| 12 fprintf(stderr, "\t-F file\t\tfilter definition file\n"); | |
| 13 fprintf(stderr, "\t-h\t\tprint usage\n"); | |
| 14 fprintf(stderr, "\t-o file\t\toutput (watermarked) file\n"); | |
| 15 fprintf(stderr, "\t-s file\t\tsignature to embed in input image\n"); | |
| 16 fprintf(stderr, "\t-v n\t\tverbosity level\n"); | |
| 17 exit(0); | |
| 18 } | |
| 19 | |
| 20 int main(int argc, char *argv[]) { | |
| 21 | |
| 22 FILE *in = stdin; | |
| 23 FILE *out = stdout; | |
| 24 FILE *sig = NULL; | |
| 25 | |
| 26 char output_name[MAXPATHLEN] = "(stdout)"; | |
| 27 char input_name[MAXPATHLEN] = "(stdin)"; | |
| 28 char signature_name[MAXPATHLEN]; | |
| 29 | |
| 30 int c; | |
| 31 int row, col; | |
| 32 | |
| 33 int n; | |
| 34 | |
| 35 double alpha = 0.0; | |
| 36 | |
| 37 int filter = 0; | |
| 38 int method = -1; | |
| 3 | 39 int level = 0; |
| 0 | 40 char filter_name[MAXPATHLEN] = ""; |
| 41 | |
| 42 int verbose = 0; | |
| 43 | |
| 44 gray **image; | |
| 45 Image_tree dwts; | |
| 46 | |
| 47 gray maxval; | |
| 8 | 48 int rows, cols, format; |
| 0 | 49 |
| 50 progname = argv[0]; | |
| 51 | |
| 52 pgm_init(&argc, argv); wm_init(); | |
| 53 | |
| 54 while ((c = getopt(argc, argv, "a:e:f:F:h?o:s:v:")) != EOF) { | |
| 55 switch (c) { | |
| 56 case 'a': | |
| 57 alpha = atof(optarg); | |
| 58 if (alpha <= 0.0) { | |
| 59 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha); | |
| 60 exit(1); | |
| 61 } | |
| 62 break; | |
| 63 case 'e': | |
| 64 method = atoi(optarg); | |
| 65 if (method < 0) { | |
| 66 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method); | |
| 67 exit(1); | |
| 68 } | |
| 69 break; | |
| 70 case 'f': | |
| 71 filter = atoi(optarg); | |
| 72 if (filter <= 0) { | |
| 73 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter); | |
| 74 exit(1); | |
| 75 } | |
| 76 break; | |
| 77 case 'F': | |
| 78 strcpy(filter_name, optarg); | |
| 79 break; | |
| 80 case 'h': | |
| 81 case '?': | |
| 82 usage(); | |
| 83 break; | |
| 84 case 'o': | |
| 85 if ((out = fopen(optarg, "wb")) == NULL) { | |
| 86 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); | |
| 87 exit(1); | |
| 88 } | |
| 89 strcpy(output_name, optarg); | |
| 90 break; | |
| 91 case 's': | |
| 92 if ((sig = fopen(optarg, "r")) == NULL) { | |
| 93 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); | |
| 94 exit(1); | |
| 95 } | |
| 96 strcpy(signature_name, optarg); | |
| 97 break; | |
| 98 case 'v': | |
| 99 verbose = atoi(optarg); | |
| 100 if (verbose < 0) { | |
| 101 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); | |
| 102 exit(1); | |
| 103 } | |
| 104 break; | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 argc -= optind; | |
| 109 argv += optind; | |
| 110 | |
| 111 if (argc > 1) { | |
| 112 usage(); | |
| 113 exit(1); | |
| 114 } | |
| 115 | |
| 8 | 116 if (argc == 1 && *argv[0] != '-') { |
| 0 | 117 if ((in = fopen(argv[0], "rb")) == NULL) { |
| 118 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); | |
| 119 exit(1); | |
| 120 } | |
| 121 else | |
| 122 strcpy(input_name, argv[0]); | |
| 8 | 123 } |
| 0 | 124 |
| 125 if (sig) { | |
| 126 char line[32]; | |
| 127 fgets(line, sizeof(line), sig); | |
| 128 if (strspn(line, "CVSG") >= 4) { | |
| 129 fscanf(sig, "%d\n", &n); | |
| 130 if (alpha == 0.0) | |
| 131 fscanf(sig, "%lf\n", &alpha); | |
| 132 else | |
|
16
4987db85cfae
fix another scanf() warning
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
15
diff
changeset
|
133 fscanf(sig, "%*f\n"); |
| 0 | 134 if (method < 0) |
| 135 fscanf(sig, "%d\n", &method); | |
| 136 else | |
| 137 fscanf(sig, "%*d\n"); | |
| 138 if (filter == 0) | |
| 139 fscanf(sig, "%d\n", &filter); | |
| 140 else | |
| 141 fscanf(sig, "%*d\n"); | |
| 142 if (!strcmp(filter_name, "")) | |
| 15 | 143 fscanf(sig, "%[^\n\r]\n", filter_name); |
| 0 | 144 else |
| 145 fscanf(sig, "%*[^\n\r]\n"); | |
| 146 } | |
| 147 else { | |
| 148 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); | |
| 149 exit(1); | |
| 150 } | |
| 151 } | |
| 152 else { | |
| 153 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname); | |
| 154 exit(1); | |
| 155 } | |
| 156 | |
| 157 pgm_readpgminit(in, &cols, &rows, &maxval, &format); | |
| 158 | |
| 159 image = pgm_allocarray(cols, rows); | |
| 160 | |
| 161 for (row = 0; row < rows; row++) | |
| 162 pgm_readpgmrow(in, image[row], cols, maxval, format); | |
| 163 | |
| 164 fclose(in); | |
| 165 | |
| 166 level = 0; | |
| 167 row = rows; | |
| 168 col = cols; | |
| 169 while (n < row * col / 4.0 && row >= 2 && col >= 2) { | |
| 170 row /= 2; | |
| 171 col /= 2; | |
| 172 level++; | |
| 173 } | |
| 174 | |
| 175 if (verbose >= 2) { | |
| 176 fprintf(stderr, "%s: embedding into coarse image (x %d/y %d) at level %d\n", progname, col, row, level); | |
| 177 } | |
| 178 | |
| 179 init_dwt(cols, rows, filter_name, filter, level, method); | |
| 180 #ifdef POLLEN_STUFF | |
| 3 | 181 #include "pollen_stuff.c" |
| 0 | 182 #endif |
| 183 #ifdef PARAM_STUFF | |
| 3 | 184 #include "param_stuff.c" |
| 0 | 185 #endif |
| 186 | |
| 187 dwts = fdwt(image); | |
| 188 | |
| 189 { | |
| 190 Image_tree p = dwts; | |
| 191 Image img; | |
| 192 double med; | |
| 193 | |
| 194 while (!p->image) | |
| 195 p = p->coarse; | |
| 196 | |
| 197 img = p->image; | |
| 198 | |
| 199 med = 0.0; | |
| 200 for (row = 0; row < img->height; row++) | |
| 201 for (col = 0; col < img->width; col++) | |
| 202 med += get_pixel(img, col, row); | |
| 203 | |
| 204 med /= (double) (img->height * img->width); | |
| 205 | |
| 206 row = 0; | |
| 207 col = 0; | |
| 208 while (n > 0) { | |
| 209 double pix; | |
| 210 double g; | |
| 211 | |
| 212 fscanf(sig, "%lf\n", &g); | |
| 213 | |
| 214 pix = get_pixel(img, col, row); | |
| 215 pix = med + (pix - med) * (1.0 + alpha * g); | |
| 216 set_pixel(img, col, row, pix); | |
| 217 | |
| 218 if (++col == img->width) { col = 0; row++; } | |
| 219 n--; | |
| 220 } | |
| 221 } | |
| 222 | |
| 223 fclose(sig); | |
| 224 | |
| 225 idwt(dwts, image); | |
| 226 | |
| 227 pgm_writepgminit(out, cols, rows, maxval, 0); | |
| 228 | |
| 229 for (row = 0; row < rows; row++) | |
| 230 pgm_writepgmrow(out, image[row], cols, maxval, 0); | |
| 231 | |
| 232 fclose(out); | |
| 233 | |
| 234 pgm_freearray(image, rows); | |
| 235 | |
| 236 exit(0); | |
| 237 } |