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Comparing CV/CV.xs (file contents):
Revision 1.30 by root, Wed Dec 28 20:56:20 2005 UTC vs.
Revision 1.41 by root, Sat Mar 1 04:11:26 2008 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 f->v1 /= 255.;
124 f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
125 f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
126}
127
70static guint32 a85_val; 128static guint32 a85_val;
71static guint a85_cnt; 129static guint a85_cnt;
72static guchar a85_buf[LINELENGTH], *a85_ptr; 130static guchar a85_buf[LINELENGTH], *a85_ptr;
73 131
74static void 132static void
… …
143 } 201 }
144 202
145 OUTPUT: 203 OUTPUT:
146 RETVAL 204 RETVAL
147 205
206const char *
207magic (const char *path)
208 CODE:
209{
210 static magic_t cookie;
211
212 if (!cookie)
213 {
214 cookie = magic_open (MAGIC_NONE);
215
216 if (cookie)
217 magic_load (cookie, 0);
218 else
219 XSRETURN_UNDEF;
220 }
221
222 RETVAL = magic_file (cookie, path);
223}
224 OUTPUT:
225 RETVAL
226
227const char *
228magic_mime (const char *path)
229 CODE:
230{
231 static magic_t cookie;
232
233 if (!cookie)
234 {
235 cookie = magic_open (MAGIC_MIME);
236
237 if (cookie)
238 magic_load (cookie, 0);
239 else
240 XSRETURN_UNDEF;
241 }
242
243 RETVAL = magic_file (cookie, path);
244}
245 OUTPUT:
246 RETVAL
247
148# missing in Gtk2 perl module 248# missing/broken in Gtk2 perl module
249
250void
251gdk_window_clear_hints (GdkWindow *window)
252 CODE:
253 gdk_window_set_geometry_hints (window, 0, 0);
149 254
150gboolean 255gboolean
151gdk_net_wm_supports (GdkAtom property) 256gdk_net_wm_supports (GdkAtom property)
152 CODE: 257 CODE:
153#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 258#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
287 jpeg_destroy_decompress (&cinfo); 392 jpeg_destroy_decompress (&cinfo);
288} 393}
289 OUTPUT: 394 OUTPUT:
290 RETVAL 395 RETVAL
291 396
397void
398compare (GdkPixbuf *a, GdkPixbuf *b)
399 PPCODE:
400{
401 int w = gdk_pixbuf_get_width (a);
402 int h = gdk_pixbuf_get_height (a);
403 int sa = gdk_pixbuf_get_rowstride (a);
404 int sb = gdk_pixbuf_get_rowstride (b);
405
406 guchar *pa = gdk_pixbuf_get_pixels (a);
407 guchar *pb = gdk_pixbuf_get_pixels (b);
408
409 int x, y;
410
411 assert (w == gdk_pixbuf_get_width (b));
412 assert (h == gdk_pixbuf_get_height (b));
413
414 assert (gdk_pixbuf_get_n_channels (a) == 3);
415 assert (gdk_pixbuf_get_n_channels (b) == 3);
416
417 double diff = 0.;
418 int peak = 0;
419
420 if (w && h)
421 for (y = 0; y < h; y++)
422 {
423 guchar *pa_ = pa + y * sa;
424 guchar *pb_ = pb + y * sb;
425
426 for (x = 0; x < w; x++)
427 {
428 int d;
429
430 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
431 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
432 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
433 }
434 }
435
436 EXTEND (SP, 2);
437 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
438 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
439}
440
292############################################################################# 441#############################################################################
293 442
294MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 443MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
444
445# currently only works for filenames (octet strings)
295 446
296SV * 447SV *
297foldcase (SV *pathsv) 448foldcase (SV *pathsv)
298 PROTOTYPE: $ 449 PROTOTYPE: $
299 CODE: 450 CODE:
300{ 451{
301 STRLEN plen; 452 STRLEN plen;
302 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 453 U8 *path = (U8 *)SvPV (pathsv, plen);
303 U8 *pend = path + plen; 454 U8 *pend = path + plen;
304 U8 dst [plen * 6 * 3], *dstp = dst; 455 U8 dst [plen * 6 * 3], *dstp = dst;
305 456
306 while (path < pend) 457 while (path < pend)
307 { 458 {
308 U8 ch = *path; 459 U8 ch = *path;
309 460
310 if (ch >= 'a' && ch <= 'z') 461 if (ch >= 'a' && ch <= 'z')
311 *dstp++ = *path++; 462 *dstp++ = *path++;
463 else if (ch >= 'A' && ch <= 'Z')
464 *dstp++ = *path++ + ('a' - 'A');
312 else if (ch >= '0' && ch <= '9') 465 else if (ch >= '0' && ch <= '9')
313 { 466 {
314 STRLEN el, nl = 0; 467 STRLEN el, nl = 0;
315 while (*path >= '0' && *path <= '9' && path < pend) 468 while (*path >= '0' && *path <= '9' && path < pend)
316 path++, nl++; 469 path++, nl++;
… …
319 *dstp++ = '0'; 472 *dstp++ = '0';
320 473
321 memcpy (dstp, path - nl, nl); 474 memcpy (dstp, path - nl, nl);
322 dstp += nl; 475 dstp += nl;
323 } 476 }
477 else
478 *dstp++ = *path++;
479#if 0
324 else 480 else
325 { 481 {
326 STRLEN cl; 482 STRLEN cl;
327 to_utf8_fold (path, dstp, &cl); 483 to_utf8_fold (path, dstp, &cl);
328 dstp += cl; 484 dstp += cl;
329 path += is_utf8_char (path); 485 path += is_utf8_char (path);
330 } 486 }
487#endif
331 } 488 }
332 489
333 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 490 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
334} 491}
335 OUTPUT: 492 OUTPUT:
… …
497############################################################################# 654#############################################################################
498 655
499MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 656MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
500 657
501SV * 658SV *
502make_histograms (SV *ar) 659extract_features (SV *ar)
503 CODE: 660 CODE:
504{ 661{
505 int i; 662 int i;
506 AV *av, *result; 663 AV *av, *result;
507 664
508 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 665 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
509 croak ("Not an array ref as first argument to make_histogram"); 666 croak ("Not an array ref as first argument to extract_features");
510 667
511 av = (AV *) SvRV (ar); 668 av = (AV *) SvRV (ar);
512 result = newAV (); 669 result = newAV ();
513 670
514 for (i = 0; i <= av_len (av); ++i) 671 for (i = 0; i <= av_len (av); ++i)
515 { 672 {
516 const int HISTSIZE = 64;
517
518 int j;
519 SV *sv = *av_fetch (av, i, 1); 673 SV *sv = *av_fetch (av, i, 1);
520 STRLEN len;
521 char *buf = SvPVbyte (sv, len);
522
523 int tmphist[HISTSIZE];
524 float *hist;
525
526 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); 674 SV *histsv = newSV (9 * sizeof (float) + 1);
675
527 SvPOK_on (histsv); 676 SvPOK_on (histsv);
528 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 677 SvCUR_set (histsv, 9 * sizeof (float));
529 hist = (float *)SvPVX (histsv); 678 float *hist = (float *)SvPVX (histsv);
530 679
531 Zero (tmphist, sizeof (tmphist), char); 680 struct feature f_h, f_s, f_v;
681 feature_init (&f_h);
682 feature_init (&f_s);
683 feature_init (&f_v);
532 684
533 for (j = len; j--; )
534 {
535 unsigned int idx
536 = ((*buf & 0xc0) >> 2)
537 | ((*buf & 0x18) >> 1)
538 | (*buf & 0x03);
539
540 ++tmphist[idx];
541 ++buf;
542 }
543 685 {
544 for (j = 0; j < HISTSIZE; ++j) 686 STRLEN len;
545 hist[j] = (float)tmphist[j] / (len + 1e-30); 687 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
688 while (len >= 3)
689 {
690 unsigned int r, g, b, h, s, v;
691 r = *buf++; g = *buf++; b = *buf++;
692 rgb_to_hsv (r, g, b, &h, &s, &v);
693
694 feature_update_pass_1 (&f_h, h);
695 feature_update_pass_1 (&f_s, s);
696 feature_update_pass_1 (&f_v, v);
697
698 len -= 3;
699 }
700
701 feature_finish_pass_1 (&f_h);
702 feature_finish_pass_1 (&f_s);
703 feature_finish_pass_1 (&f_v);
704 }
705
706 {
707 STRLEN len;
708 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
709 while (len >= 3)
710 {
711 unsigned int r, g, b, h, s, v;
712 r = *buf++; g = *buf++; b = *buf++;
713 rgb_to_hsv (r, g, b, &h, &s, &v);
714
715 feature_update_pass_2 (&f_h, h);
716 feature_update_pass_2 (&f_s, s);
717 feature_update_pass_2 (&f_v, v);
718
719 len -= 3;
720 }
721
722 feature_finish_pass_2 (&f_h);
723 feature_finish_pass_2 (&f_s);
724 feature_finish_pass_2 (&f_v);
725 }
726
727 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
728 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
729 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
546 730
547 av_push (result, histsv); 731 av_push (result, histsv);
548 } 732 }
549 733
550 RETVAL = newRV_noinc ((SV *)result); 734 RETVAL = newRV_noinc ((SV *)result);
551} 735}
552 OUTPUT: 736 OUTPUT:
553 RETVAL 737 RETVAL
554 738
555

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