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comparison Meerwald-dir/wm_kund_e.c @ 24:9f20bce6184e v0.7

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move directories, support netpbm 11
author Peter Meerwald-Stadler <pmeerw@pmeerw.net>
date Fri, 20 Dec 2024 13:08:59 +0100
parents Meerwald/wm_kund_e.c@4987db85cfae
children
comparison
equal deleted inserted replaced
23:71dd4b96221b 24:9f20bce6184e
1 #include "wm.h"
2 #include "signature.h"
3 #include "wm_dwt.h"
4 #include "pgm.h"
5
6 char *progname;
7
8 void usage(void) {
9 fprintf(stderr, "usage: %s [-e n] [-f n] [-F n] [-h] [-o file] [-q n] [-v n] -s file file\n\n", progname);
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-q n\t\tquantization/quality factor\n");
16 fprintf(stderr, "\t-s file\t\tsignature to embed in input image\n");
17 fprintf(stderr, "\t-v n\t\tverbosity level\n");
18 exit(0);
19 }
20
21 int main(int argc, char *argv[]) {
22
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 c;
32 int row, col;
33
34 int n;
35
36 double quality = 0.0;
37
38 int filter = 0;
39 int method = -1;
40 int level = 0;
41 char filter_name[MAXPATHLEN] = "";
42
43 int seed;
44 int verbose = 0;
45
46 gray **image;
47 Image_tree dwts;
48
49 gray maxval;
50 int rows, cols, colors, format;
51
52 progname = argv[0];
53
54 pgm_init(&argc, argv);
55
56 #ifdef __EMX__
57 _fsetmode(in, "b");
58 _fsetmode(out, "b");
59 #endif
60
61 while ((c = getopt(argc, argv, "e:f:F:h?l:o:q:s:v:")) != EOF) {
62 switch (c) {
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 'l':
85 level = atoi(optarg);
86 if (level < 1) {
87 fprintf(stderr, "%s: embedding level out of range\n", progname);
88 exit(1);
89 }
90 break;
91 case 'o':
92 if ((out = fopen(optarg, "wb")) == NULL) {
93 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
94 exit(1);
95 }
96 strcpy(output_name, optarg);
97 break;
98 case 'q':
99 quality = atoi(optarg);
100 if (quality <= 0) {
101 fprintf(stderr, "%s: quality factor %d out of range\n", progname, quality);
102 exit(1);
103 }
104 break;
105 case 's':
106 if ((sig = fopen(optarg, "r")) == NULL) {
107 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
108 exit(1);
109 }
110 strcpy(signature_name, optarg);
111 break;
112 case 'v':
113 verbose = atoi(optarg);
114 if (verbose < 0) {
115 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
116 exit(1);
117 }
118 break;
119 }
120 }
121
122 argc -= optind;
123 argv += optind;
124
125 if (argc > 1) {
126 usage();
127 exit(1);
128 }
129
130 if (argc == 1 && *argv[0] != '-')
131 if ((in = fopen(argv[0], "rb")) == NULL) {
132 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
133 exit(1);
134 }
135 else
136 strcpy(input_name, argv[0]);
137
138 if (sig) {
139 char line[32];
140 fgets(line, sizeof(line), sig);
141 if (strspn(line, "KDSG") >= 4) {
142 fscanf(sig, "%d\n", &n);
143 if (quality == 0.0)
144 fscanf(sig, "%lf\n", &quality);
145 else
146 fscanf(sig, "%*f\n");
147 if (method < 0)
148 fscanf(sig, "%d\n", &method);
149 else
150 fscanf(sig, "%*d\n");
151 if (filter == 0)
152 fscanf(sig, "%d\n", &filter);
153 else
154 fscanf(sig, "%*d\n");
155 if (!strcmp(filter_name, ""))
156 fscanf(sig, "%[^\n\r]\n", filter_name);
157 else
158 fscanf(sig, "%*[^\n\r]\n");
159 if (level == 0)
160 fscanf(sig, "%d\n", &level);
161 else
162 fscanf(sig, "%*d\n");
163 fscanf(sig, "%d\n", &seed);
164 srandom(seed);
165 n_signature = NBITSTOBYTES(nbit_signature);
166 fread(signature, sizeof(char), n_signature, sig);
167 fscanf(sig, "\n");
168 }
169 else {
170 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
171 exit(1);
172 }
173 fclose(sig);
174 }
175 else {
176 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
177 exit(1);
178 }
179
180 pgm_readpgminit(in, &cols, &rows, &maxval, &format);
181
182 image = pgm_allocarray(cols, rows);
183
184 for (row = 0; row < rows; row++)
185 pgm_readpgmrow(in, image[row], cols, maxval, format);
186
187 fclose(in);
188
189 // check watermark dimensions and decomposition level
190
191
192 // decomposition of image
193 init_dwt(cols, rows, filter_name, filter, level, method);
194 #ifdef POLLEN_STUFF
195 {
196 double alpha, beta;
197 char *alpha_str = getenv("POLLEN_ALPHA"), *beta_str = getenv("POLLEN_BETA");
198
199 if (alpha_str && beta_str) {
200 alpha = atof(alpha_str);
201 beta = atof(beta_str);
202
203 if (alpha < -M_PI || alpha >= M_PI) {
204 fprintf(stderr, "%s: pollen - alpha %f out of range\n", progname, alpha);
205 exit(1);
206 }
207
208 if (beta < -M_PI || beta >= M_PI) {
209 fprintf(stderr, "%s: pollen - beta %f out of range\n", progname, beta);
210 exit(1);
211 }
212
213 if (verbose > 7)
214 fprintf(stderr, "%s: pollen - alpha %f, beta %f\n", progname, alpha, beta);
215
216 dwt_pollen_filter(alpha, beta);
217 }
218 }
219 #endif
220
221 dwts = fdwt(image);
222
223 // create 'image' from binary watermark
224
225 // decomposition of watermark
226 init_dwt(cols, rows, filter_name, filter, 1, method);
227 // dwts = fdwt(watermark);
228
229 // calculate mean value of image and set alpha
230
231 // setup of contrast sensitivity matrix
232
233 // segment detail images at each level
234
235 // calculate DFT of each segment
236
237 // compute salience for each segment
238
239 // calculate gamma or each detail image
240
241 // embed watermark
242
243 // reconstruction of watermarked image
244
245 idwt(dwts, image);
246
247 pgm_writepgminit(out, cols, rows, maxval, 0);
248
249 for (row = 0; row < rows; row++)
250 pgm_writepgmrow(out, image[row], cols, maxval, 0);
251
252 fclose(out);
253
254 pgm_freearray(image, rows);
255
256 exit(0);
257 }

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