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Comparing CV/CV.xs (file contents):
Revision 1.28 by root, Mon Aug 22 00:30:58 2005 UTC vs.
Revision 1.36 by root, Thu Jun 22 20:50:05 2006 UTC

… …
2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include <string.h> 5#include <string.h>
6#include <setjmp.h> 6#include <setjmp.h>
7#include <math.h>
8
9#include <magic.h>
7 10
8#include <jpeglib.h> 11#include <jpeglib.h>
9#include <glib.h> 12#include <glib.h>
10#include <gtk/gtk.h> 13#include <gtk/gtk.h>
11#include <gdk-pixbuf/gdk-pixbuf.h> 14#include <gdk-pixbuf/gdk-pixbuf.h>
12 15
13#include <gperl.h> 16#include <gperl.h>
14#include <gtk2perl.h> 17#include <gtk2perl.h>
15 18
16#define IW 80 /* MUST match Schnauer.pm! */ 19#define IW 80 /* MUST match Schnauzer.pm! */
17#define IH 60 /* MUST match Schnauer.pm! */ 20#define IH 60 /* MUST match Schnauzer.pm! */
18 21
19#define RAND (seed = (seed + 7141) * 54773 % 134456) 22#define RAND (seed = (seed + 7141) * 54773 % 134456)
20 23
21#define LINELENGTH 240 24#define LINELENGTH 240
22 25
… …
65 68
66 *h &= 255; 69 *h &= 255;
67 } 70 }
68} 71}
69 72
73struct feature {
74 float v1, v2, v3; // mean, square, cube
75 int n;
76};
77
78static void
79feature_init (struct feature *f)
80{
81 f->v1 = 0.;
82 f->v2 = 0.;
83 f->v3 = 0.;
84 f->n = 0;
85}
86
87// didn't find an algorithm to neatly do mean, variance and skew in one pass.
88// elmex ist schuld.
89static void
90feature_update_pass_1 (struct feature *f, unsigned int v)
91{
92 f->v1 += v;
93 f->n += 1;
94}
95
96static void
97feature_finish_pass_1 (struct feature *f)
98{
99 if (f->n < 1)
100 return;
101
102 f->v1 /= f->n;
103}
104
105static void
106feature_update_pass_2 (struct feature *f, unsigned int v)
107{
108 float d = v - f->v1;
109
110 f->v2 += d * d;
111 f->v3 += d * d * d;
112}
113
114static void
115feature_finish_pass_2 (struct feature *f)
116{
117 if (f->n < 1)
118 return;
119
120 f->v2 /= f->n;
121 f->v3 /= f->n;
122
123 // this is a peculiar weightung, but it works fine
124 f->v1 /= 255.;
125 f->v2 /= 128. * 128.;
126 f->v3 /= 128. * 128. * 64.;
127}
128
70static guint32 a85_val; 129static guint32 a85_val;
71static guint a85_cnt; 130static guint a85_cnt;
72static guchar a85_buf[LINELENGTH], *a85_ptr; 131static guchar a85_buf[LINELENGTH], *a85_ptr;
73 132
74static void 133static void
… …
126 185
127MODULE = Gtk2::CV PACKAGE = Gtk2::CV 186MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128 187
129PROTOTYPES: ENABLE 188PROTOTYPES: ENABLE
130 189
190# missing function in perl. really :)
191int
192common_prefix_length (a, b)
193 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
194 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
195 CODE:
196 RETVAL = 0;
197
198 while (*a == *b && *a)
199 {
200 RETVAL += (*a & 0xc0) != 0x80;
201 a++, b++;
202 }
203
204 OUTPUT:
205 RETVAL
206
207const char *
208magic (const char *path)
209 CODE:
210{
211 static magic_t cookie;
212
213 if (!cookie)
214 {
215 cookie = magic_open (MAGIC_NONE);
216
217 if (cookie)
218 magic_load (cookie, 0);
219 else
220 XSRETURN_UNDEF;
221 }
222
223 RETVAL = magic_file (cookie, path);
224}
225 OUTPUT:
226 RETVAL
227
228const char *
229magic_mime (const char *path)
230 CODE:
231{
232 static magic_t cookie;
233
234 if (!cookie)
235 {
236 cookie = magic_open (MAGIC_MIME);
237
238 if (cookie)
239 magic_load (cookie, 0);
240 else
241 XSRETURN_UNDEF;
242 }
243
244 RETVAL = magic_file (cookie, path);
245}
246 OUTPUT:
247 RETVAL
248
131# missing in Gtk2 perl module 249# missing in Gtk2 perl module
132 250
133gboolean 251gboolean
134gdk_net_wm_supports (GdkAtom property) 252gdk_net_wm_supports (GdkAtom property)
135 CODE: 253 CODE:
… …
184 struct jpg_err_mgr jerr; 302 struct jpg_err_mgr jerr;
185 guchar *data; 303 guchar *data;
186 int rs; 304 int rs;
187 FILE *fp; 305 FILE *fp;
188 volatile GdkPixbuf *pb = 0; 306 volatile GdkPixbuf *pb = 0;
189 gchar *filename;
190 307
191 RETVAL = 0; 308 RETVAL = 0;
192 309
193 filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
194 fp = fopen (filename, "rb"); 310 fp = fopen (SvPVbyte_nolen (path), "rb");
195 g_free (filename);
196 311
197 if (!fp) 312 if (!fp)
198 XSRETURN_UNDEF; 313 XSRETURN_UNDEF;
199 314
200 cinfo.err = jpeg_std_error (&jerr.err); 315 cinfo.err = jpeg_std_error (&jerr.err);
… …
272 fclose (fp); 387 fclose (fp);
273 jpeg_destroy_decompress (&cinfo); 388 jpeg_destroy_decompress (&cinfo);
274} 389}
275 OUTPUT: 390 OUTPUT:
276 RETVAL 391 RETVAL
392
393void
394compare (GdkPixbuf *a, GdkPixbuf *b)
395 PPCODE:
396{
397 int w = gdk_pixbuf_get_width (a);
398 int h = gdk_pixbuf_get_height (a);
399 int sa = gdk_pixbuf_get_rowstride (a);
400 int sb = gdk_pixbuf_get_rowstride (b);
401
402 guchar *pa = gdk_pixbuf_get_pixels (a);
403 guchar *pb = gdk_pixbuf_get_pixels (b);
404
405 int x, y;
406
407 assert (w == gdk_pixbuf_get_width (b));
408 assert (h == gdk_pixbuf_get_height (b));
409
410 assert (gdk_pixbuf_get_n_channels (a) == 3);
411 assert (gdk_pixbuf_get_n_channels (b) == 3);
412
413 double diff = 0.;
414 int peak = 0;
415
416 if (w && h)
417 for (y = 0; y < h; y++)
418 {
419 guchar *pa_ = pa + y * sa;
420 guchar *pb_ = pb + y * sb;
421
422 for (x = 0; x < w; x++)
423 {
424 int d;
425
426 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
427 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
428 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
429 }
430 }
431
432 EXTEND (SP, 2);
433 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
434 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
435}
277 436
278############################################################################# 437#############################################################################
279 438
280MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 439MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
281 440
… …
483############################################################################# 642#############################################################################
484 643
485MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 644MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
486 645
487SV * 646SV *
647extract_features (SV *ar)
648 CODE:
649{
650 int i;
651 AV *av, *result;
652
653 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
654 croak ("Not an array ref as first argument to make_histogram");
655
656 av = (AV *) SvRV (ar);
657 result = newAV ();
658
659 for (i = 0; i <= av_len (av); ++i)
660 {
661 SV *sv = *av_fetch (av, i, 1);
662 SV *histsv = newSV (9 * sizeof (float) + 1);
663
664 SvPOK_on (histsv);
665 SvCUR_set (histsv, 9 * sizeof (float));
666 float *hist = (float *)SvPVX (histsv);
667
668 struct feature f_h, f_s, f_v;
669 feature_init (&f_h);
670 feature_init (&f_s);
671 feature_init (&f_v);
672
673 {
674 STRLEN len;
675 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
676 while (len >= 3)
677 {
678 unsigned int r, g, b, h, s, v;
679 r = *buf++; g = *buf++; b = *buf++;
680 rgb_to_hsv (r, g, b, &h, &s, &v);
681
682 feature_update_pass_1 (&f_h, h);
683 feature_update_pass_1 (&f_s, s);
684 feature_update_pass_1 (&f_v, v);
685
686 len -= 3;
687 }
688
689 feature_finish_pass_1 (&f_h);
690 feature_finish_pass_1 (&f_s);
691 feature_finish_pass_1 (&f_v);
692 }
693
694 {
695 STRLEN len;
696 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
697 while (len >= 3)
698 {
699 unsigned int r, g, b, h, s, v;
700 r = *buf++; g = *buf++; b = *buf++;
701 rgb_to_hsv (r, g, b, &h, &s, &v);
702
703 feature_update_pass_2 (&f_h, h);
704 feature_update_pass_2 (&f_s, s);
705 feature_update_pass_2 (&f_v, v);
706
707 len -= 3;
708 }
709
710 feature_finish_pass_2 (&f_h);
711 feature_finish_pass_2 (&f_s);
712 feature_finish_pass_2 (&f_v);
713 }
714
715 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
716 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
717 hist [6] = f_v.v1 ; hist [7] = f_v.v2 ; hist [8] = f_v.v3 ;
718
719 av_push (result, histsv);
720 }
721
722 RETVAL = newRV_noinc ((SV *)result);
723}
724 OUTPUT:
725 RETVAL
726
727SV *
488make_histograms (SV *ar) 728make_histograms (SV *ar)
489 CODE: 729 CODE:
490{ 730{
491 int i; 731 int i;
492 AV *av, *result; 732 AV *av, *result;

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