Mercurial > hg > wm
view Meerwald/wm_wang_d.c @ 23:71dd4b96221b
fix some compiler warning
author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> |
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date | Fri, 20 Dec 2024 12:53:41 +0100 |
parents | 4987db85cfae |
children |
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#include "wm.h" #include "dwt.h" #include "wang_common.h" #include "dwt_util.h" #include "pgm.h" char *progname; void usage(void) { fprintf(stderr, "usage: %s [-a n] [-b n] [-e n] [-f n] [-F file] [-h] [-n n] [-o file] [-v n] -s file -i file file\n\n", progname); fprintf(stderr, "\t-a n\t\talpha factor\n"); fprintf(stderr, "\t-b n\t\tbeta factor\n"); fprintf(stderr, "\t-e n\t\twavelet filtering method\n"); fprintf(stderr, "\t-f n\t\tfilter number\n"); fprintf(stderr, "\t-F file\t\tfilter definition file\n"); fprintf(stderr, "\t-h\t\tprint usage\n"); fprintf(stderr, "\t-i file\t\toriginal image file\n"); fprintf(stderr, "\t-n n\t\twatermark length\n"); fprintf(stderr, "\t-o file\t\tfile for extracted watermark\n"); fprintf(stderr, "\t-s file\t\toriginal signature file\n"); fprintf(stderr, "\t-v n\t\tverbosity level\n"); exit(0); } int main(int argc, char *argv[]) { FILE *in = stdin; FILE *out = stdout; FILE *orig = NULL; FILE *sig = NULL; gray **input_image; gray **orig_image; char signature_name[MAXPATHLEN]; char output_name[MAXPATHLEN] = "(stdout)"; char input_name[MAXPATHLEN] = "(stdin)"; char orig_name[MAXPATHLEN]; int c, w; int n = 0; int method = -1; int filter = 0; char filter_name[MAXPATHLEN] = ""; int level = 0; double alpha = 0.0; double beta = 0.0; int in_rows, in_cols, in_format; gray in_maxval; int orig_rows, orig_cols, orig_format; gray orig_maxval; int rows, cols; int row; double *watermark; Image_tree input_dwts; Image_tree orig_dwts; int verbose = 0; progname = argv[0]; pgm_init(&argc, argv); wm_init2(); while ((c = getopt(argc, argv, "a:b:e:f:F:h?i:n:o:s:v:")) != EOF) { switch (c) { case 'a': alpha = atof(optarg); if (alpha <= 0.0) { fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha); exit(1); } break; case 'b': beta = atof(optarg); if (beta <= 0.0) { fprintf(stderr, "%s: beta factor %f out of range\n", progname, alpha); exit(1); } break; case 'e': method = atoi(optarg); if (method < 0) { fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method); exit(1); } break; case 'f': filter = atoi(optarg); if (filter <= 0) { fprintf(stderr, "%s: filter number %d out of range\n", progname, filter); exit(1); } break; case 'F': strcpy(filter_name, optarg); break; case 'h': case '?': usage(); break; case 'i': if ((orig = fopen(optarg, "rb")) == NULL) { fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg); exit(1); } strcpy(orig_name, optarg); break; case 'n': n = atoi(optarg); if (n < 1 || n > 32000) { fprintf(stderr, "%s: watermark length %d out of range\n", progname, n); exit(1); } break; case 'o': if ((out = fopen(optarg, "w")) == NULL) { fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg); exit(1); } strcpy(output_name, optarg); break; case 's': if ((sig = fopen(optarg, "r")) == NULL) { fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg); exit(1); } strcpy(signature_name, optarg); break; case 'v': verbose = atoi(optarg); if (verbose < 0) { fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose); exit(1); } break; } } argc -= optind; argv += optind; if (argc > 1) { usage(); exit(1); } if (argc == 1 && *argv[0] != '-') { if ((in = fopen(argv[0], "rb")) == NULL) { fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]); exit(1); } else strcpy(input_name, argv[0]); } if (!orig) { fprintf(stderr, "%s: original image file not specified, use -i file option\n", progname); exit(1); } if (sig) { char line[32]; fgets(line, sizeof(line), sig); if (strspn(line, "WGSG") >= 4) { fscanf(sig, "%d\n", &n); if (alpha == 0.0) fscanf(sig, "%lf\n", &alpha); else fscanf(sig, "%*f\n"); if (beta == 0.0) fscanf(sig, "%lf\n", &beta); else fscanf(sig, "%*f\n"); if (method < 0) fscanf(sig, "%d\n", &method); else fscanf(sig, "%*d\n"); if (filter == 0) fscanf(sig, "%d\n", &filter); else fscanf(sig, "%*d\n"); if (!strcmp(filter_name, "")) fscanf(sig, "%[^\n\r]\n", filter_name); else fscanf(sig, "%*[^\n\r]\n"); } else { fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name); exit(1); } fclose(sig); } else { fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname); exit(1); } watermark = malloc(n * sizeof(double)); pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format); pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format); if (in_cols != orig_cols || in_rows != orig_rows) { fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name); exit(1); } cols = in_cols; rows = in_rows; input_image = pgm_allocarray(in_cols, in_rows); orig_image = pgm_allocarray(orig_cols, orig_rows); for (row = 0; row < in_rows; row++) { pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format); pgm_readpgmrow(orig, orig_image[row], orig_cols, orig_maxval, orig_format); } fclose(in); fclose(orig); // complete decomposition level = find_deepest_level(cols, rows) - 1; init_dwt(cols, rows, filter_name, filter, level, method); #ifdef POLLEN_STUFF #include "pollen_stuff.c" #endif #ifdef PARAM_STUFF #include "param_stuff.c" #endif input_dwts = fdwt(input_image); orig_dwts = fdwt(orig_image); // build tree for subband selection, calculate subband thresholds init_subbands(orig_dwts); set_subbands_type_beta(HORIZONTAL, beta); set_subbands_type_beta(VERTICAL, beta); calc_subbands_threshold(); fprintf(out, "WGWM\n"); fprintf(out, "%d\n", n); w = 0; while (w < n) { Subband_data s; // select subband with max. threshold s = select_subband(); if (verbose > 1) fprintf(stderr, "%s: selected subband %s%d, T=%lf, beta=%lf\n", progname, subband_name(s->type), s->level, s->T, s->beta); // watermark significant coefficients and set them selected // check is entire signature has been embedded c = select_subband_coeff(s); do { Pixel p; Pixel q; if (c < 0) // no more significant coefficients in subband break; p = get_subband_coeff(s, c); if (p < s->Cmax) { q = get_dwt_coeff(input_dwts, s->level, s->type, c); watermark[w] = (q - p) / (alpha * s->beta * s->T); fprintf(out, "%lf\n", watermark[w]); if (verbose > 2) fprintf(stderr, "%s: detected sig. coeff. #%d (= %lf)\n from %s%d coeff. #%d\n", progname, w, watermark[w], subband_name(s->type), s->level, c); w++; } mark_subband_coeff(s, c); // select next significant coefficient c = select_subband_coeff_from(s, c); } while (w < n); // update subband threshold s->T /= 2.0; } fclose(out); free_subbands(); free(watermark); pgm_freearray(input_image, rows); pgm_freearray(orig_image, rows); exit(0); }