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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 1.42 by root, Sun Sep 14 12:47:59 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
23#define ELLIPSIS "\xe2\x80\xa6" 26#define ELLIPSIS "\xe2\x80\xa6"
27
28typedef char *octet_string;
24 29
25struct jpg_err_mgr 30struct jpg_err_mgr
26{ 31{
27 struct jpeg_error_mgr err; 32 struct jpeg_error_mgr err;
28 jmp_buf setjmp_buffer; 33 jmp_buf setjmp_buffer;
… …
65 70
66 *h &= 255; 71 *h &= 255;
67 } 72 }
68} 73}
69 74
75struct feature {
76 float v1, v2, v3; // mean, square, cube
77 int n;
78};
79
80static void
81feature_init (struct feature *f)
82{
83 f->v1 = 0.;
84 f->v2 = 0.;
85 f->v3 = 0.;
86 f->n = 0;
87}
88
89// didn't find an algorithm to neatly do mean, variance and skew in one pass.
90// elmex ist schuld.
91static void
92feature_update_pass_1 (struct feature *f, unsigned int v)
93{
94 f->v1 += v;
95 f->n += 1;
96}
97
98static void
99feature_finish_pass_1 (struct feature *f)
100{
101 if (f->n < 1)
102 return;
103
104 f->v1 /= f->n;
105}
106
107static void
108feature_update_pass_2 (struct feature *f, unsigned int v)
109{
110 float d = v - f->v1;
111
112 f->v2 += d * d;
113 f->v3 += d * d * d;
114}
115
116static void
117feature_finish_pass_2 (struct feature *f)
118{
119 if (f->n < 1)
120 return;
121
122 f->v2 /= f->n;
123 f->v3 /= f->n;
124
125 f->v1 /= 255.;
126 f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
127 f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
128}
129
70static guint32 a85_val; 130static guint32 a85_val;
71static guint a85_cnt; 131static guint a85_cnt;
72static guchar a85_buf[LINELENGTH], *a85_ptr; 132static guchar a85_buf[LINELENGTH], *a85_ptr;
73 133
74static void 134static void
… …
143 } 203 }
144 204
145 OUTPUT: 205 OUTPUT:
146 RETVAL 206 RETVAL
147 207
208const char *
209magic (octet_string path)
210 CODE:
211{
212 static magic_t cookie;
213
214 if (!cookie)
215 {
216 cookie = magic_open (MAGIC_NONE);
217
218 if (cookie)
219 magic_load (cookie, 0);
220 else
221 XSRETURN_UNDEF;
222 }
223
224 RETVAL = magic_file (cookie, path);
225}
226 OUTPUT:
227 RETVAL
228
229const char *
230magic_mime (octet_string path)
231 CODE:
232{
233 static magic_t cookie;
234
235 if (!cookie)
236 {
237 cookie = magic_open (MAGIC_MIME);
238
239 if (cookie)
240 magic_load (cookie, 0);
241 else
242 XSRETURN_UNDEF;
243 }
244
245 RETVAL = magic_file (cookie, path);
246}
247 OUTPUT:
248 RETVAL
249
148# missing in Gtk2 perl module 250# missing/broken in Gtk2 perl module
251
252void
253gdk_window_clear_hints (GdkWindow *window)
254 CODE:
255 gdk_window_set_geometry_hints (window, 0, 0);
149 256
150gboolean 257gboolean
151gdk_net_wm_supports (GdkAtom property) 258gdk_net_wm_supports (GdkAtom property)
152 CODE: 259 CODE:
153#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 260#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
287 jpeg_destroy_decompress (&cinfo); 394 jpeg_destroy_decompress (&cinfo);
288} 395}
289 OUTPUT: 396 OUTPUT:
290 RETVAL 397 RETVAL
291 398
399void
400compare (GdkPixbuf *a, GdkPixbuf *b)
401 PPCODE:
402{
403 int w = gdk_pixbuf_get_width (a);
404 int h = gdk_pixbuf_get_height (a);
405 int sa = gdk_pixbuf_get_rowstride (a);
406 int sb = gdk_pixbuf_get_rowstride (b);
407
408 guchar *pa = gdk_pixbuf_get_pixels (a);
409 guchar *pb = gdk_pixbuf_get_pixels (b);
410
411 int x, y;
412
413 assert (w == gdk_pixbuf_get_width (b));
414 assert (h == gdk_pixbuf_get_height (b));
415
416 assert (gdk_pixbuf_get_n_channels (a) == 3);
417 assert (gdk_pixbuf_get_n_channels (b) == 3);
418
419 double diff = 0.;
420 int peak = 0;
421
422 if (w && h)
423 for (y = 0; y < h; y++)
424 {
425 guchar *pa_ = pa + y * sa;
426 guchar *pb_ = pb + y * sb;
427
428 for (x = 0; x < w; x++)
429 {
430 int d;
431
432 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
433 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
434 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
435 }
436 }
437
438 EXTEND (SP, 2);
439 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
440 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
441}
442
292############################################################################# 443#############################################################################
293 444
294MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 445MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
446
447# currently only works for filenames (octet strings)
295 448
296SV * 449SV *
297foldcase (SV *pathsv) 450foldcase (SV *pathsv)
298 PROTOTYPE: $ 451 PROTOTYPE: $
299 CODE: 452 CODE:
300{ 453{
301 STRLEN plen; 454 STRLEN plen;
302 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 455 U8 *path = (U8 *)SvPV (pathsv, plen);
303 U8 *pend = path + plen; 456 U8 *pend = path + plen;
304 U8 dst [plen * 6 * 3], *dstp = dst; 457 U8 dst [plen * 6 * 3], *dstp = dst;
305 458
306 while (path < pend) 459 while (path < pend)
307 { 460 {
308 U8 ch = *path; 461 U8 ch = *path;
309 462
310 if (ch >= 'a' && ch <= 'z') 463 if (ch >= 'a' && ch <= 'z')
311 *dstp++ = *path++; 464 *dstp++ = *path++;
465 else if (ch >= 'A' && ch <= 'Z')
466 *dstp++ = *path++ + ('a' - 'A');
312 else if (ch >= '0' && ch <= '9') 467 else if (ch >= '0' && ch <= '9')
313 { 468 {
314 STRLEN el, nl = 0; 469 STRLEN el, nl = 0;
315 while (*path >= '0' && *path <= '9' && path < pend) 470 while (*path >= '0' && *path <= '9' && path < pend)
316 path++, nl++; 471 path++, nl++;
… …
319 *dstp++ = '0'; 474 *dstp++ = '0';
320 475
321 memcpy (dstp, path - nl, nl); 476 memcpy (dstp, path - nl, nl);
322 dstp += nl; 477 dstp += nl;
323 } 478 }
479 else
480 *dstp++ = *path++;
481#if 0
324 else 482 else
325 { 483 {
326 STRLEN cl; 484 STRLEN cl;
327 to_utf8_fold (path, dstp, &cl); 485 to_utf8_fold (path, dstp, &cl);
328 dstp += cl; 486 dstp += cl;
329 path += is_utf8_char (path); 487 path += is_utf8_char (path);
330 } 488 }
489#endif
331 } 490 }
332 491
333 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 492 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
334} 493}
335 OUTPUT: 494 OUTPUT:
… …
497############################################################################# 656#############################################################################
498 657
499MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 658MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
500 659
501SV * 660SV *
502make_histograms (SV *ar) 661extract_features (SV *ar)
503 CODE: 662 CODE:
504{ 663{
505 int i; 664 int i;
506 AV *av, *result; 665 AV *av, *result;
507 666
508 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 667 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
509 croak ("Not an array ref as first argument to make_histogram"); 668 croak ("Not an array ref as first argument to extract_features");
510 669
511 av = (AV *) SvRV (ar); 670 av = (AV *) SvRV (ar);
512 result = newAV (); 671 result = newAV ();
513 672
514 for (i = 0; i <= av_len (av); ++i) 673 for (i = 0; i <= av_len (av); ++i)
515 { 674 {
516 const int HISTSIZE = 64;
517
518 int j;
519 SV *sv = *av_fetch (av, i, 1); 675 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); 676 SV *histsv = newSV (9 * sizeof (float) + 1);
677
527 SvPOK_on (histsv); 678 SvPOK_on (histsv);
528 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 679 SvCUR_set (histsv, 9 * sizeof (float));
529 hist = (float *)SvPVX (histsv); 680 float *hist = (float *)SvPVX (histsv);
530 681
531 Zero (tmphist, sizeof (tmphist), char); 682 struct feature f_h, f_s, f_v;
683 feature_init (&f_h);
684 feature_init (&f_s);
685 feature_init (&f_v);
532 686
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 }
543 687 {
544 for (j = 0; j < HISTSIZE; ++j) 688 STRLEN len;
545 hist[j] = (float)tmphist[j] / (len + 1e-30); 689 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
690 while (len >= 3)
691 {
692 unsigned int r, g, b, h, s, v;
693 r = *buf++; g = *buf++; b = *buf++;
694 rgb_to_hsv (r, g, b, &h, &s, &v);
695
696 feature_update_pass_1 (&f_h, h);
697 feature_update_pass_1 (&f_s, s);
698 feature_update_pass_1 (&f_v, v);
699
700 len -= 3;
701 }
702
703 feature_finish_pass_1 (&f_h);
704 feature_finish_pass_1 (&f_s);
705 feature_finish_pass_1 (&f_v);
706 }
707
708 {
709 STRLEN len;
710 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
711 while (len >= 3)
712 {
713 unsigned int r, g, b, h, s, v;
714 r = *buf++; g = *buf++; b = *buf++;
715 rgb_to_hsv (r, g, b, &h, &s, &v);
716
717 feature_update_pass_2 (&f_h, h);
718 feature_update_pass_2 (&f_s, s);
719 feature_update_pass_2 (&f_v, v);
720
721 len -= 3;
722 }
723
724 feature_finish_pass_2 (&f_h);
725 feature_finish_pass_2 (&f_s);
726 feature_finish_pass_2 (&f_v);
727 }
728
729 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
730 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
731 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
546 732
547 av_push (result, histsv); 733 av_push (result, histsv);
548 } 734 }
549 735
550 RETVAL = newRV_noinc ((SV *)result); 736 RETVAL = newRV_noinc ((SV *)result);
551} 737}
552 OUTPUT: 738 OUTPUT:
553 RETVAL 739 RETVAL
554 740
555

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