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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 1.44 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
… …
126 188
127MODULE = Gtk2::CV PACKAGE = Gtk2::CV 189MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128 190
129PROTOTYPES: ENABLE 191PROTOTYPES: ENABLE
130 192
193# missing function in perl. really :)
194int
195common_prefix_length (a, b)
196 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
197 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
198 CODE:
199 RETVAL = 0;
200
201 while (*a == *b && *a)
202 {
203 RETVAL += (*a & 0xc0) != 0x80;
204 a++, b++;
205 }
206
207 OUTPUT:
208 RETVAL
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
131# 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);
132 258
133gboolean 259gboolean
134gdk_net_wm_supports (GdkAtom property) 260gdk_net_wm_supports (GdkAtom property)
135 CODE: 261 CODE:
136#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 262#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
166 RETVAL 292 RETVAL
167 293
168GdkPixbuf_noinc * 294GdkPixbuf_noinc *
169rotate (GdkPixbuf *pb, int angle) 295rotate (GdkPixbuf *pb, int angle)
170 CODE: 296 CODE:
297 if (angle < 0)
298 angle += 360;
171 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
172 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 300 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
173 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 301 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
174 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 302 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
175 : angle); 303 : angle);
… …
184 struct jpg_err_mgr jerr; 312 struct jpg_err_mgr jerr;
185 guchar *data; 313 guchar *data;
186 int rs; 314 int rs;
187 FILE *fp; 315 FILE *fp;
188 volatile GdkPixbuf *pb = 0; 316 volatile GdkPixbuf *pb = 0;
189 gchar *filename;
190 317
191 RETVAL = 0; 318 RETVAL = 0;
192 319
193 filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
194 fp = fopen (filename, "rb"); 320 fp = fopen (SvPVbyte_nolen (path), "rb");
195 g_free (filename);
196 321
197 if (!fp) 322 if (!fp)
198 XSRETURN_UNDEF; 323 XSRETURN_UNDEF;
199 324
200 cinfo.err = jpeg_std_error (&jerr.err); 325 cinfo.err = jpeg_std_error (&jerr.err);
… …
273 jpeg_destroy_decompress (&cinfo); 398 jpeg_destroy_decompress (&cinfo);
274} 399}
275 OUTPUT: 400 OUTPUT:
276 RETVAL 401 RETVAL
277 402
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
278############################################################################# 448#############################################################################
279 449
280MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 450MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
451
452# currently only works for filenames (octet strings)
281 453
282SV * 454SV *
283foldcase (SV *pathsv) 455foldcase (SV *pathsv)
284 PROTOTYPE: $ 456 PROTOTYPE: $
285 CODE: 457 CODE:
286{ 458{
287 STRLEN plen; 459 STRLEN plen;
288 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 460 U8 *path = (U8 *)SvPV (pathsv, plen);
289 U8 *pend = path + plen; 461 U8 *pend = path + plen;
290 U8 dst [plen * 6 * 3], *dstp = dst; 462 U8 dst [plen * 6 * 3], *dstp = dst;
291 463
292 while (path < pend) 464 while (path < pend)
293 { 465 {
294 U8 ch = *path; 466 U8 ch = *path;
295 467
296 if (ch >= 'a' && ch <= 'z') 468 if (ch >= 'a' && ch <= 'z')
297 *dstp++ = *path++; 469 *dstp++ = *path++;
470 else if (ch >= 'A' && ch <= 'Z')
471 *dstp++ = *path++ + ('a' - 'A');
298 else if (ch >= '0' && ch <= '9') 472 else if (ch >= '0' && ch <= '9')
299 { 473 {
300 STRLEN el, nl = 0; 474 STRLEN el, nl = 0;
301 while (*path >= '0' && *path <= '9' && path < pend) 475 while (*path >= '0' && *path <= '9' && path < pend)
302 path++, nl++; 476 path++, nl++;
… …
305 *dstp++ = '0'; 479 *dstp++ = '0';
306 480
307 memcpy (dstp, path - nl, nl); 481 memcpy (dstp, path - nl, nl);
308 dstp += nl; 482 dstp += nl;
309 } 483 }
484 else
485 *dstp++ = *path++;
486#if 0
310 else 487 else
311 { 488 {
312 STRLEN cl; 489 STRLEN cl;
313 to_utf8_fold (path, dstp, &cl); 490 to_utf8_fold (path, dstp, &cl);
314 dstp += cl; 491 dstp += cl;
315 path += is_utf8_char (path); 492 path += is_utf8_char (path);
316 } 493 }
494#endif
317 } 495 }
318 496
319 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 497 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
320} 498}
321 OUTPUT: 499 OUTPUT:
… …
483############################################################################# 661#############################################################################
484 662
485MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 663MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
486 664
487SV * 665SV *
488make_histograms (SV *ar) 666extract_features (SV *ar)
489 CODE: 667 CODE:
490{ 668{
491 int i; 669 int i;
492 AV *av, *result; 670 AV *av, *result;
493 671
494 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 672 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
495 croak ("Not an array ref as first argument to make_histogram"); 673 croak ("Not an array ref as first argument to extract_features");
496 674
497 av = (AV *) SvRV (ar); 675 av = (AV *) SvRV (ar);
498 result = newAV (); 676 result = newAV ();
499 677
500 for (i = 0; i <= av_len (av); ++i) 678 for (i = 0; i <= av_len (av); ++i)
501 { 679 {
502 const int HISTSIZE = 64;
503
504 int j;
505 SV *sv = *av_fetch (av, i, 1); 680 SV *sv = *av_fetch (av, i, 1);
506 STRLEN len;
507 char *buf = SvPVbyte (sv, len);
508
509 int tmphist[HISTSIZE];
510 float *hist;
511
512 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); 681 SV *histsv = newSV (9 * sizeof (float) + 1);
682
513 SvPOK_on (histsv); 683 SvPOK_on (histsv);
514 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 684 SvCUR_set (histsv, 9 * sizeof (float));
515 hist = (float *)SvPVX (histsv); 685 float *hist = (float *)SvPVX (histsv);
516 686
517 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);
518 691
519 for (j = len; j--; )
520 {
521 unsigned int idx
522 = ((*buf & 0xc0) >> 2)
523 | ((*buf & 0x18) >> 1)
524 | (*buf & 0x03);
525
526 ++tmphist[idx];
527 ++buf;
528 }
529 692 {
530 for (j = 0; j < HISTSIZE; ++j) 693 STRLEN len;
531 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;
532 737
533 av_push (result, histsv); 738 av_push (result, histsv);
534 } 739 }
535 740
536 RETVAL = newRV_noinc ((SV *)result); 741 RETVAL = newRV_noinc ((SV *)result);
537} 742}
538 OUTPUT: 743 OUTPUT:
539 RETVAL 744 RETVAL
540 745
541

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