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Comparing CV/CV.xs (file contents):
Revision 1.26 by root, Sun Aug 21 02:18:30 2005 UTC vs.
Revision 1.40 by root, Sat Nov 25 15:00:51 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 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
126 184
127MODULE = Gtk2::CV PACKAGE = Gtk2::CV 185MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128 186
129PROTOTYPES: ENABLE 187PROTOTYPES: ENABLE
130 188
189# missing function in perl. really :)
190int
191common_prefix_length (a, b)
192 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
193 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
194 CODE:
195 RETVAL = 0;
196
197 while (*a == *b && *a)
198 {
199 RETVAL += (*a & 0xc0) != 0x80;
200 a++, b++;
201 }
202
203 OUTPUT:
204 RETVAL
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
131# 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);
132 254
133gboolean 255gboolean
134gdk_net_wm_supports (GdkAtom property) 256gdk_net_wm_supports (GdkAtom property)
135 CODE: 257 CODE:
136#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 258#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
145dealpha_expose (GdkPixbuf *pb) 267dealpha_expose (GdkPixbuf *pb)
146 CODE: 268 CODE:
147{ 269{
148 int w = gdk_pixbuf_get_width (pb); 270 int w = gdk_pixbuf_get_width (pb);
149 int h = gdk_pixbuf_get_height (pb); 271 int h = gdk_pixbuf_get_height (pb);
150 fprintf (stderr, "new %d %d\n", w, h);
151 int bpp = gdk_pixbuf_get_n_channels (pb); 272 int bpp = gdk_pixbuf_get_n_channels (pb);
152 int x, y, i; 273 int x, y, i;
153 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 274 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
154 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 275 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
155 276
165} 286}
166 OUTPUT: 287 OUTPUT:
167 RETVAL 288 RETVAL
168 289
169GdkPixbuf_noinc * 290GdkPixbuf_noinc *
170transpose (GdkPixbuf *pb) 291rotate (GdkPixbuf *pb, int angle)
171 CODE: 292 CODE:
172{ 293 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
173 int w = gdk_pixbuf_get_width (pb); 294 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
174 int h = gdk_pixbuf_get_height (pb); 295 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
175 int bpp = gdk_pixbuf_get_n_channels (pb); 296 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
176 int x, y, i; 297 : angle);
177 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
178 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
179
180 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);
181
182 dst = gdk_pixbuf_get_pixels (RETVAL);
183 dstr = gdk_pixbuf_get_rowstride (RETVAL);
184
185 for (y = 0; y < h; y++)
186 for (x = 0; x < w; x++)
187 for (i = 0; i < bpp; i++)
188 dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];
189}
190 OUTPUT:
191 RETVAL
192
193GdkPixbuf_noinc *
194flop (GdkPixbuf *pb)
195 CODE:
196{
197 int w = gdk_pixbuf_get_width (pb);
198 int h = gdk_pixbuf_get_height (pb);
199 int bpp = gdk_pixbuf_get_n_channels (pb);
200 int x, y, i;
201 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
202 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
203
204 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);
205
206 dst = gdk_pixbuf_get_pixels (RETVAL);
207 dstr = gdk_pixbuf_get_rowstride (RETVAL);
208
209 for (y = 0; y < h; y++)
210 for (x = 0; x < w; x++)
211 for (i = 0; i < bpp; i++)
212 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
213}
214 OUTPUT: 298 OUTPUT:
215 RETVAL 299 RETVAL
216 300
217GdkPixbuf_noinc * 301GdkPixbuf_noinc *
218load_jpeg (SV *path, int thumbnail=0) 302load_jpeg (SV *path, int thumbnail=0)
222 struct jpg_err_mgr jerr; 306 struct jpg_err_mgr jerr;
223 guchar *data; 307 guchar *data;
224 int rs; 308 int rs;
225 FILE *fp; 309 FILE *fp;
226 volatile GdkPixbuf *pb = 0; 310 volatile GdkPixbuf *pb = 0;
227 gchar *filename;
228 311
229 RETVAL = 0; 312 RETVAL = 0;
230 313
231 filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
232 fp = fopen (filename, "rb"); 314 fp = fopen (SvPVbyte_nolen (path), "rb");
233 g_free (filename);
234 315
235 if (!fp) 316 if (!fp)
236 XSRETURN_UNDEF; 317 XSRETURN_UNDEF;
237 318
238 cinfo.err = jpeg_std_error (&jerr.err); 319 cinfo.err = jpeg_std_error (&jerr.err);
310 fclose (fp); 391 fclose (fp);
311 jpeg_destroy_decompress (&cinfo); 392 jpeg_destroy_decompress (&cinfo);
312} 393}
313 OUTPUT: 394 OUTPUT:
314 RETVAL 395 RETVAL
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}
315 440
316############################################################################# 441#############################################################################
317 442
318MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 443MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
319 444
384 } 509 }
385} 510}
386 OUTPUT: 511 OUTPUT:
387 RETVAL 512 RETVAL
388 513
514#############################################################################
515
516MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
517
518void
519dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
520 CODE:
521{
522 int w = gdk_pixbuf_get_width (pb);
523 int h = gdk_pixbuf_get_height (pb);
524 int x, y, i;
525 guchar *dst;
526 int bpp = gdk_pixbuf_get_n_channels (pb);
527 guchar *src = gdk_pixbuf_get_pixels (pb);
528 int sstr = gdk_pixbuf_get_rowstride (pb);
529
530 a85_init ();
531
532 for (y = 0; y < h; y++)
533 for (x = 0; x < w; x++)
534 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
535 a85_push (fp, src [x * bpp + y * sstr + i]);
536
537 a85_finish (fp);
538}
539
540void
541dump_binary (PerlIO *fp, GdkPixbuf *pb)
542 CODE:
543{
544 int w = gdk_pixbuf_get_width (pb);
545 int h = gdk_pixbuf_get_height (pb);
546 int x, y, i;
547 guchar *dst;
548 int bpp = gdk_pixbuf_get_n_channels (pb);
549 guchar *src = gdk_pixbuf_get_pixels (pb);
550 int sstr = gdk_pixbuf_get_rowstride (pb);
551
552 for (y = 0; y < h; y++)
553 for (x = 0; x < w; x++)
554 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
555 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
556}
557
558#############################################################################
559
560MODULE = Gtk2::CV PACKAGE = Gtk2::CV
561
389SV * 562SV *
390pb_to_p7 (GdkPixbuf *pb) 563pb_to_hv84 (GdkPixbuf *pb)
391 CODE: 564 CODE:
392{ 565{
393 int w = gdk_pixbuf_get_width (pb); 566 int w = gdk_pixbuf_get_width (pb);
394 int h = gdk_pixbuf_get_height (pb); 567 int h = gdk_pixbuf_get_height (pb);
395 int x, y; 568 int x, y;
396 guchar *dst; 569 guchar *dst;
397 int bpp = gdk_pixbuf_get_n_channels (pb); 570 int bpp = gdk_pixbuf_get_n_channels (pb);
398 guchar *src = gdk_pixbuf_get_pixels (pb); 571 guchar *src = gdk_pixbuf_get_pixels (pb);
399 int sstr = gdk_pixbuf_get_rowstride (pb); 572 int sstr = gdk_pixbuf_get_rowstride (pb);
400 int Er[IW], Eg[IW], Eb[IW];
401 int seed = 77;
402
403 RETVAL = newSV (w * h);
404 SvPOK_only (RETVAL);
405 SvCUR_set (RETVAL, w * h);
406
407 dst = (guchar *)SvPVX (RETVAL);
408
409 memset (Er, 0, sizeof (int) * IW);
410 memset (Eg, 0, sizeof (int) * IW);
411 memset (Eb, 0, sizeof (int) * IW);
412
413 /* some primitive error distribution + random dithering */
414
415 for (y = 0; y < h; y++)
416 {
417 int er = 0, eg = 0, eb = 0;
418
419 for (x = 0; x < w; x++)
420 {
421 int r, g, b;
422 guchar *p = src + x * bpp + y * sstr;
423
424 r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
425 g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
426 b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
427
428 r = r > 7 ? 7 : r < 0 ? 0 : r;
429 g = g > 7 ? 7 : g < 0 ? 0 : g;
430 b = b > 3 ? 3 : b < 0 ? 0 : b;
431
432 er += p[0] - (r * 255 + 4) / 7;
433 eg += p[1] - (g * 255 + 4) / 7;
434 eb += p[2] - (b * 255 + 2) / 3;
435
436 Er[x] = er >> 1; er -= (er + 1) >> 1;
437 Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
438 Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
439
440 *dst++ = r << 5 | g << 2 | b;
441 }
442 }
443}
444 OUTPUT:
445 RETVAL
446
447#############################################################################
448
449MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
450
451void
452dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
453 CODE:
454{
455 int w = gdk_pixbuf_get_width (pb);
456 int h = gdk_pixbuf_get_height (pb);
457 int x, y, i;
458 guchar *dst;
459 int bpp = gdk_pixbuf_get_n_channels (pb);
460 guchar *src = gdk_pixbuf_get_pixels (pb);
461 int sstr = gdk_pixbuf_get_rowstride (pb);
462
463 a85_init ();
464
465 for (y = 0; y < h; y++)
466 for (x = 0; x < w; x++)
467 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
468 a85_push (fp, src [x * bpp + y * sstr + i]);
469
470 a85_finish (fp);
471}
472
473void
474dump_binary (PerlIO *fp, GdkPixbuf *pb)
475 CODE:
476{
477 int w = gdk_pixbuf_get_width (pb);
478 int h = gdk_pixbuf_get_height (pb);
479 int x, y, i;
480 guchar *dst;
481 int bpp = gdk_pixbuf_get_n_channels (pb);
482 guchar *src = gdk_pixbuf_get_pixels (pb);
483 int sstr = gdk_pixbuf_get_rowstride (pb);
484
485 for (y = 0; y < h; y++)
486 for (x = 0; x < w; x++)
487 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
488 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
489}
490
491#############################################################################
492
493MODULE = Gtk2::CV PACKAGE = Gtk2::CV
494
495SV *
496pb_to_hv84 (GdkPixbuf *pb)
497 CODE:
498{
499 int w = gdk_pixbuf_get_width (pb);
500 int h = gdk_pixbuf_get_height (pb);
501 int x, y;
502 guchar *dst;
503 int bpp = gdk_pixbuf_get_n_channels (pb);
504 guchar *src = gdk_pixbuf_get_pixels (pb);
505 int sstr = gdk_pixbuf_get_rowstride (pb);
506 573
507 RETVAL = newSV (6 * 8 * 12 / 8); 574 RETVAL = newSV (6 * 8 * 12 / 8);
508 SvPOK_only (RETVAL); 575 SvPOK_only (RETVAL);
509 SvCUR_set (RETVAL, 6 * 8 * 12 / 8); 576 SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
510 577
579############################################################################# 646#############################################################################
580 647
581MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 648MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
582 649
583SV * 650SV *
584make_histograms (SV *ar) 651extract_features (SV *ar)
585 CODE: 652 CODE:
586{ 653{
587 int i; 654 int i;
588 AV *av, *result; 655 AV *av, *result;
589 656
590 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 657 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
591 croak ("Not an array ref as first argument to make_histogram"); 658 croak ("Not an array ref as first argument to extract_features");
592 659
593 av = (AV *) SvRV (ar); 660 av = (AV *) SvRV (ar);
594 result = newAV (); 661 result = newAV ();
595 662
596 for (i = 0; i <= av_len (av); ++i) 663 for (i = 0; i <= av_len (av); ++i)
597 { 664 {
598 const int HISTSIZE = 64;
599
600 int j;
601 SV *sv = *av_fetch (av, i, 1); 665 SV *sv = *av_fetch (av, i, 1);
602 STRLEN len;
603 char *buf = SvPVbyte (sv, len);
604
605 int tmphist[HISTSIZE];
606 float *hist;
607
608 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); 666 SV *histsv = newSV (9 * sizeof (float) + 1);
667
609 SvPOK_on (histsv); 668 SvPOK_on (histsv);
610 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 669 SvCUR_set (histsv, 9 * sizeof (float));
611 hist = (float *)SvPVX (histsv); 670 float *hist = (float *)SvPVX (histsv);
612 671
613 Zero (tmphist, sizeof (tmphist), char); 672 struct feature f_h, f_s, f_v;
673 feature_init (&f_h);
674 feature_init (&f_s);
675 feature_init (&f_v);
614 676
615 for (j = len; j--; )
616 {
617 unsigned int idx
618 = ((*buf & 0xc0) >> 2)
619 | ((*buf & 0x18) >> 1)
620 | (*buf & 0x03);
621
622 ++tmphist[idx];
623 ++buf;
624 }
625 677 {
626 for (j = 0; j < HISTSIZE; ++j) 678 STRLEN len;
627 hist[j] = (float)tmphist[j] / (len + 1e-30); 679 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
680 while (len >= 3)
681 {
682 unsigned int r, g, b, h, s, v;
683 r = *buf++; g = *buf++; b = *buf++;
684 rgb_to_hsv (r, g, b, &h, &s, &v);
685
686 feature_update_pass_1 (&f_h, h);
687 feature_update_pass_1 (&f_s, s);
688 feature_update_pass_1 (&f_v, v);
689
690 len -= 3;
691 }
692
693 feature_finish_pass_1 (&f_h);
694 feature_finish_pass_1 (&f_s);
695 feature_finish_pass_1 (&f_v);
696 }
697
698 {
699 STRLEN len;
700 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
701 while (len >= 3)
702 {
703 unsigned int r, g, b, h, s, v;
704 r = *buf++; g = *buf++; b = *buf++;
705 rgb_to_hsv (r, g, b, &h, &s, &v);
706
707 feature_update_pass_2 (&f_h, h);
708 feature_update_pass_2 (&f_s, s);
709 feature_update_pass_2 (&f_v, v);
710
711 len -= 3;
712 }
713
714 feature_finish_pass_2 (&f_h);
715 feature_finish_pass_2 (&f_s);
716 feature_finish_pass_2 (&f_v);
717 }
718
719 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
720 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
721 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
628 722
629 av_push (result, histsv); 723 av_push (result, histsv);
630 } 724 }
631 725
632 RETVAL = newRV_noinc ((SV *)result); 726 RETVAL = newRV_noinc ((SV *)result);
633} 727}
634 OUTPUT: 728 OUTPUT:
635 RETVAL 729 RETVAL
636 730
637

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