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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 1.44 by root, Sun Dec 30 16:23:23 2012 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
19#include <assert.h>
20
16#define IW 80 /* MUST match Schnauer.pm! */ 21#define IW 80 /* MUST match Schnauzer.pm! */
17#define IH 60 /* MUST match Schnauer.pm! */ 22#define IH 60 /* MUST match Schnauzer.pm! */
18 23
19#define RAND (seed = (seed + 7141) * 54773 % 134456) 24#define RAND (seed = (seed + 7141) * 54773 % 134456)
20 25
21#define LINELENGTH 240 26#define LINELENGTH 240
22 27
23#define ELLIPSIS "\xe2\x80\xa6" 28#define ELLIPSIS "\xe2\x80\xa6"
29
30typedef char *octet_string;
24 31
25struct jpg_err_mgr 32struct jpg_err_mgr
26{ 33{
27 struct jpeg_error_mgr err; 34 struct jpeg_error_mgr err;
28 jmp_buf setjmp_buffer; 35 jmp_buf setjmp_buffer;
… …
65 72
66 *h &= 255; 73 *h &= 255;
67 } 74 }
68} 75}
69 76
77struct feature {
78 float v1, v2, v3; // mean, square, cube
79 int n;
80};
81
82static void
83feature_init (struct feature *f)
84{
85 f->v1 = 0.;
86 f->v2 = 0.;
87 f->v3 = 0.;
88 f->n = 0;
89}
90
91// didn't find an algorithm to neatly do mean, variance and skew in one pass.
92// elmex ist schuld.
93static void
94feature_update_pass_1 (struct feature *f, unsigned int v)
95{
96 f->v1 += v;
97 f->n += 1;
98}
99
100static void
101feature_finish_pass_1 (struct feature *f)
102{
103 if (f->n < 1)
104 return;
105
106 f->v1 /= f->n;
107}
108
109static void
110feature_update_pass_2 (struct feature *f, unsigned int v)
111{
112 float d = v - f->v1;
113
114 f->v2 += d * d;
115 f->v3 += d * d * d;
116}
117
118static void
119feature_finish_pass_2 (struct feature *f)
120{
121 if (f->n < 1)
122 return;
123
124 f->v2 /= f->n;
125 f->v3 /= f->n;
126
127 f->v1 /= 255.;
128 f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
129 f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
130}
131
70static guint32 a85_val; 132static guint32 a85_val;
71static guint a85_cnt; 133static guint a85_cnt;
72static guchar a85_buf[LINELENGTH], *a85_ptr; 134static guchar a85_buf[LINELENGTH], *a85_ptr;
73 135
74static void 136static void
… …
143 } 205 }
144 206
145 OUTPUT: 207 OUTPUT:
146 RETVAL 208 RETVAL
147 209
210const char *
211magic (octet_string path)
212 CODE:
213{
214 static magic_t cookie;
215
216 if (!cookie)
217 {
218 cookie = magic_open (MAGIC_NONE);
219
220 if (cookie)
221 magic_load (cookie, 0);
222 else
223 XSRETURN_UNDEF;
224 }
225
226 RETVAL = magic_file (cookie, path);
227}
228 OUTPUT:
229 RETVAL
230
231const char *
232magic_mime (octet_string path)
233 CODE:
234{
235 static magic_t cookie;
236
237 if (!cookie)
238 {
239 cookie = magic_open (MAGIC_MIME);
240
241 if (cookie)
242 magic_load (cookie, 0);
243 else
244 XSRETURN_UNDEF;
245 }
246
247 RETVAL = magic_file (cookie, path);
248}
249 OUTPUT:
250 RETVAL
251
148# missing in Gtk2 perl module 252# missing/broken in Gtk2 perl module
253
254void
255gdk_window_clear_hints (GdkWindow *window)
256 CODE:
257 gdk_window_set_geometry_hints (window, 0, 0);
149 258
150gboolean 259gboolean
151gdk_net_wm_supports (GdkAtom property) 260gdk_net_wm_supports (GdkAtom property)
152 CODE: 261 CODE:
153#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 262#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
183 RETVAL 292 RETVAL
184 293
185GdkPixbuf_noinc * 294GdkPixbuf_noinc *
186rotate (GdkPixbuf *pb, int angle) 295rotate (GdkPixbuf *pb, int angle)
187 CODE: 296 CODE:
297 if (angle < 0)
298 angle += 360;
188 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 299 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
189 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 300 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
190 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 301 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
191 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 302 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
192 : angle); 303 : angle);
… …
287 jpeg_destroy_decompress (&cinfo); 398 jpeg_destroy_decompress (&cinfo);
288} 399}
289 OUTPUT: 400 OUTPUT:
290 RETVAL 401 RETVAL
291 402
403void
404compare (GdkPixbuf *a, GdkPixbuf *b)
405 PPCODE:
406{
407 int w = gdk_pixbuf_get_width (a);
408 int h = gdk_pixbuf_get_height (a);
409
410 int sa = gdk_pixbuf_get_rowstride (a);
411 int sb = gdk_pixbuf_get_rowstride (b);
412
413 guchar *pa = gdk_pixbuf_get_pixels (a);
414 guchar *pb = gdk_pixbuf_get_pixels (b);
415
416 int x, y;
417
418 assert (w == gdk_pixbuf_get_width (b));
419 assert (h == gdk_pixbuf_get_height (b));
420
421 assert (gdk_pixbuf_get_n_channels (a) == 3);
422 assert (gdk_pixbuf_get_n_channels (b) == 3);
423
424 double diff = 0.;
425 int peak = 0;
426
427 if (w && h)
428 for (y = 0; y < h; y++)
429 {
430 guchar *pa_ = pa + y * sa;
431 guchar *pb_ = pb + y * sb;
432
433 for (x = 0; x < w; x++)
434 {
435 int d;
436
437 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
438 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
439 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
440 }
441 }
442
443 EXTEND (SP, 2);
444 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
445 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
446}
447
292############################################################################# 448#############################################################################
293 449
294MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 450MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
451
452# currently only works for filenames (octet strings)
295 453
296SV * 454SV *
297foldcase (SV *pathsv) 455foldcase (SV *pathsv)
298 PROTOTYPE: $ 456 PROTOTYPE: $
299 CODE: 457 CODE:
300{ 458{
301 STRLEN plen; 459 STRLEN plen;
302 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 460 U8 *path = (U8 *)SvPV (pathsv, plen);
303 U8 *pend = path + plen; 461 U8 *pend = path + plen;
304 U8 dst [plen * 6 * 3], *dstp = dst; 462 U8 dst [plen * 6 * 3], *dstp = dst;
305 463
306 while (path < pend) 464 while (path < pend)
307 { 465 {
308 U8 ch = *path; 466 U8 ch = *path;
309 467
310 if (ch >= 'a' && ch <= 'z') 468 if (ch >= 'a' && ch <= 'z')
311 *dstp++ = *path++; 469 *dstp++ = *path++;
470 else if (ch >= 'A' && ch <= 'Z')
471 *dstp++ = *path++ + ('a' - 'A');
312 else if (ch >= '0' && ch <= '9') 472 else if (ch >= '0' && ch <= '9')
313 { 473 {
314 STRLEN el, nl = 0; 474 STRLEN el, nl = 0;
315 while (*path >= '0' && *path <= '9' && path < pend) 475 while (*path >= '0' && *path <= '9' && path < pend)
316 path++, nl++; 476 path++, nl++;
… …
319 *dstp++ = '0'; 479 *dstp++ = '0';
320 480
321 memcpy (dstp, path - nl, nl); 481 memcpy (dstp, path - nl, nl);
322 dstp += nl; 482 dstp += nl;
323 } 483 }
484 else
485 *dstp++ = *path++;
486#if 0
324 else 487 else
325 { 488 {
326 STRLEN cl; 489 STRLEN cl;
327 to_utf8_fold (path, dstp, &cl); 490 to_utf8_fold (path, dstp, &cl);
328 dstp += cl; 491 dstp += cl;
329 path += is_utf8_char (path); 492 path += is_utf8_char (path);
330 } 493 }
494#endif
331 } 495 }
332 496
333 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 497 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
334} 498}
335 OUTPUT: 499 OUTPUT:
… …
497############################################################################# 661#############################################################################
498 662
499MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 663MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
500 664
501SV * 665SV *
502make_histograms (SV *ar) 666extract_features (SV *ar)
503 CODE: 667 CODE:
504{ 668{
505 int i; 669 int i;
506 AV *av, *result; 670 AV *av, *result;
507 671
508 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 672 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
509 croak ("Not an array ref as first argument to make_histogram"); 673 croak ("Not an array ref as first argument to extract_features");
510 674
511 av = (AV *) SvRV (ar); 675 av = (AV *) SvRV (ar);
512 result = newAV (); 676 result = newAV ();
513 677
514 for (i = 0; i <= av_len (av); ++i) 678 for (i = 0; i <= av_len (av); ++i)
515 { 679 {
516 const int HISTSIZE = 64;
517
518 int j;
519 SV *sv = *av_fetch (av, i, 1); 680 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); 681 SV *histsv = newSV (9 * sizeof (float) + 1);
682
527 SvPOK_on (histsv); 683 SvPOK_on (histsv);
528 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 684 SvCUR_set (histsv, 9 * sizeof (float));
529 hist = (float *)SvPVX (histsv); 685 float *hist = (float *)SvPVX (histsv);
530 686
531 Zero (tmphist, sizeof (tmphist), char); 687 struct feature f_h, f_s, f_v;
688 feature_init (&f_h);
689 feature_init (&f_s);
690 feature_init (&f_v);
532 691
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 }
543 692 {
544 for (j = 0; j < HISTSIZE; ++j) 693 STRLEN len;
545 hist[j] = (float)tmphist[j] / (len + 1e-30); 694 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
695 while (len >= 3)
696 {
697 unsigned int r, g, b, h, s, v;
698 r = *buf++; g = *buf++; b = *buf++;
699 rgb_to_hsv (r, g, b, &h, &s, &v);
700
701 feature_update_pass_1 (&f_h, h);
702 feature_update_pass_1 (&f_s, s);
703 feature_update_pass_1 (&f_v, v);
704
705 len -= 3;
706 }
707
708 feature_finish_pass_1 (&f_h);
709 feature_finish_pass_1 (&f_s);
710 feature_finish_pass_1 (&f_v);
711 }
712
713 {
714 STRLEN len;
715 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
716 while (len >= 3)
717 {
718 unsigned int r, g, b, h, s, v;
719 r = *buf++; g = *buf++; b = *buf++;
720 rgb_to_hsv (r, g, b, &h, &s, &v);
721
722 feature_update_pass_2 (&f_h, h);
723 feature_update_pass_2 (&f_s, s);
724 feature_update_pass_2 (&f_v, v);
725
726 len -= 3;
727 }
728
729 feature_finish_pass_2 (&f_h);
730 feature_finish_pass_2 (&f_s);
731 feature_finish_pass_2 (&f_v);
732 }
733
734 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
735 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
736 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
546 737
547 av_push (result, histsv); 738 av_push (result, histsv);
548 } 739 }
549 740
550 RETVAL = newRV_noinc ((SV *)result); 741 RETVAL = newRV_noinc ((SV *)result);
551} 742}
552 OUTPUT: 743 OUTPUT:
553 RETVAL 744 RETVAL
554 745
555

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