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Comparing CV/CV.xs (file contents):
Revision 1.29 by root, Sat Sep 24 01:25:17 2005 UTC vs.
Revision 1.52 by root, Sat Dec 23 04:25:50 2017 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>
14#include <gdk/gdkx.h>
11#include <gdk-pixbuf/gdk-pixbuf.h> 15#include <gdk-pixbuf/gdk-pixbuf.h>
12 16
13#include <gperl.h> 17#include <gperl.h>
14#include <gtk2perl.h> 18#include <gtk2perl.h>
15 19
20#include <assert.h>
21
22#if WEBP
23#include <webp/decode.h>
24#endif
25
26#include "perlmulticore.h"
27
16#define IW 80 /* MUST match Schnauer.pm! */ 28#define IW 80 /* MUST match Schnauzer.pm! */
17#define IH 60 /* MUST match Schnauer.pm! */ 29#define IH 60 /* MUST match Schnauzer.pm! */
18 30
19#define RAND (seed = (seed + 7141) * 54773 % 134456) 31#define RAND (seed = (seed + 7141) * 54773 % 134456)
20 32
21#define LINELENGTH 240 33#define LINELENGTH 240
22 34
23#define ELLIPSIS "\xe2\x80\xa6" 35#define ELLIPSIS "\xe2\x80\xa6"
36
37typedef char *octet_string;
38
39static magic_t magic_cookie[2]; /* !mime, mime */
24 40
25struct jpg_err_mgr 41struct jpg_err_mgr
26{ 42{
27 struct jpeg_error_mgr err; 43 struct jpeg_error_mgr err;
28 jmp_buf setjmp_buffer; 44 jmp_buf setjmp_buffer;
29}; 45};
30 46
31static void 47static void
32cv_error_exit (j_common_ptr cinfo) 48cv_error_exit (j_common_ptr cinfo)
33{ 49{
50 cinfo->err->output_message (cinfo);
34 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); 51 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
35} 52}
36 53
37static void 54static void
38cv_error_output (j_common_ptr cinfo) 55cv_error_output (j_common_ptr cinfo)
39{ 56{
57 char msg[JMSG_LENGTH_MAX];
58
59 cinfo->err->format_message (cinfo, msg);
60
61 fprintf (stderr, "JPEG decoding error: %s\n", msg);
40 return; 62 return;
41} 63}
42 64
43static void 65static void
44rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, 66rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
… …
65 87
66 *h &= 255; 88 *h &= 255;
67 } 89 }
68} 90}
69 91
92struct feature {
93 float v1, v2, v3; // mean, square, cube
94 int n;
95};
96
97static void
98feature_init (struct feature *f)
99{
100 f->v1 = 0.;
101 f->v2 = 0.;
102 f->v3 = 0.;
103 f->n = 0;
104}
105
106// didn't find an algorithm to neatly do mean, variance and skew in one pass.
107// elmex ist schuld.
108static void
109feature_update_pass_1 (struct feature *f, unsigned int v)
110{
111 f->v1 += v;
112 f->n += 1;
113}
114
115static void
116feature_finish_pass_1 (struct feature *f)
117{
118 if (f->n < 1)
119 return;
120
121 f->v1 /= f->n;
122}
123
124static void
125feature_update_pass_2 (struct feature *f, unsigned int v)
126{
127 float d = v - f->v1;
128
129 f->v2 += d * d;
130 f->v3 += d * d * d;
131}
132
133static void
134feature_finish_pass_2 (struct feature *f)
135{
136 if (f->n < 1)
137 return;
138
139 f->v2 /= f->n;
140 f->v3 /= f->n;
141
142 f->v1 /= 255.;
143 f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
144 f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
145}
146
70static guint32 a85_val; 147static guint32 a85_val;
71static guint a85_cnt; 148static guint a85_cnt;
72static guchar a85_buf[LINELENGTH], *a85_ptr; 149static guchar a85_buf[LINELENGTH], *a85_ptr;
73 150
74static void 151static void
… …
86 if (!--a85_cnt) 163 if (!--a85_cnt)
87 { 164 {
88 a85_cnt = 4; 165 a85_cnt = 4;
89 if (a85_val) 166 if (a85_val)
90 { 167 {
91 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; 168 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
92 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; 169 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
93 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; 170 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
94 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; 171 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
95 a85_ptr[0] = (a85_val ) + 33; 172 a85_ptr[0] = (a85_val ) + 33;
96 173
97 a85_ptr += 5; 174 a85_ptr += 5;
98 } 175 }
… …
143 } 220 }
144 221
145 OUTPUT: 222 OUTPUT:
146 RETVAL 223 RETVAL
147 224
225const char *
226magic (SV *path_or_data)
227 ALIAS:
228 magic = 0
229 magic_mime = 1
230 magic_buffer = 2
231 magic_buffer_mime = 3
232 CODE:
233{
234 STRLEN len;
235 char *data = SvPVbyte (path_or_data, len);
236
237 if (!magic_cookie[0])
238 {
239 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
240 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
241 magic_load (magic_cookie[0], 0);
242 magic_load (magic_cookie[1], 0);
243 }
244
245 perlinterp_release ();
246
247 RETVAL = ix & 2
248 ? magic_buffer (magic_cookie[ix & 1], data, len)
249 : magic_file (magic_cookie[ix & 1], data);
250
251 perlinterp_acquire ();
252}
253 OUTPUT:
254 RETVAL
255
148# missing in Gtk2 perl module 256# missing/broken in Gtk2 perl module
257
258void
259gdk_window_clear_hints (GdkWindow *window)
260 CODE:
261 gdk_window_set_geometry_hints (window, 0, 0);
149 262
150gboolean 263gboolean
151gdk_net_wm_supports (GdkAtom property) 264gdk_net_wm_supports (GdkAtom property)
152 CODE: 265 CODE:
153#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 266#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
159 RETVAL 272 RETVAL
160 273
161GdkPixbuf_noinc * 274GdkPixbuf_noinc *
162dealpha_expose (GdkPixbuf *pb) 275dealpha_expose (GdkPixbuf *pb)
163 CODE: 276 CODE:
277 perlinterp_release ();
164{ 278{
165 int w = gdk_pixbuf_get_width (pb); 279 int w = gdk_pixbuf_get_width (pb);
166 int h = gdk_pixbuf_get_height (pb); 280 int h = gdk_pixbuf_get_height (pb);
167 int bpp = gdk_pixbuf_get_n_channels (pb); 281 int bpp = gdk_pixbuf_get_n_channels (pb);
168 int x, y, i; 282 int x, y, i;
… …
177 for (x = 0; x < w; x++) 291 for (x = 0; x < w; x++)
178 for (y = 0; y < h; y++) 292 for (y = 0; y < h; y++)
179 for (i = 0; i < 3; i++) 293 for (i = 0; i < 3; i++)
180 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 294 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
181} 295}
296 perlinterp_acquire ();
182 OUTPUT: 297 OUTPUT:
183 RETVAL 298 RETVAL
184 299
185GdkPixbuf_noinc * 300GdkPixbuf_noinc *
186rotate (GdkPixbuf *pb, int angle) 301rotate (GdkPixbuf *pb, int angle)
187 CODE: 302 CODE:
303 perlinterp_release ();
304 if (angle < 0)
305 angle += 360;
188 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 306 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
189 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 307 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
190 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 308 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
191 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 309 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
192 : angle); 310 : angle);
311 perlinterp_acquire ();
193 OUTPUT: 312 OUTPUT:
194 RETVAL 313 RETVAL
195 314
196GdkPixbuf_noinc * 315GdkPixbuf_noinc *
197load_jpeg (SV *path, int thumbnail=0) 316decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
317 CODE:
318{
319#if WEBP
320 guchar *data;
321 STRLEN data_size;
322 int alpha;
323 WebPDecoderConfig config;
324 int inw, inh;
325
326 data = SvPVbyte (image_data, data_size);
327
328 perlinterp_release ();
329
330 RETVAL = 0;
331
332 if (!WebPInitDecoderConfig (&config))
333 goto err;
334
335 config.options.use_threads = 1;
336
337 if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK)
338 goto err;
339
340 inw = config.input.width;
341 inh = config.input.height;
342
343 if (thumbnail)
344 {
345 if (inw * ih > inh * iw)
346 ih = (iw * inh + inw - 1) / inw;
347 else
348 iw = (ih * inw + inh - 1) / inh;
349
350 config.options.bypass_filtering = 1;
351 config.options.no_fancy_upsampling = 1;
352
353 config.options.use_scaling = 1;
354 config.options.scaled_width = iw;
355 config.options.scaled_height = ih;
356 }
357 else
358 {
359 iw = inw;
360 ih = inh;
361 }
362
363 alpha = config.input.has_alpha;
364
365 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih);
366 if (!RETVAL)
367 goto err;
368
369 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
370 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
371 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
372 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
373 config.output.is_external_memory = 1;
374
375 if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK)
376 {
377 g_object_unref (RETVAL);
378 RETVAL = 0;
379 goto err;
380 }
381
382 err:
383 perlinterp_acquire ();
384#else
385 croak ("load_webp: webp not enabled at compile time");
386#endif
387}
388 OUTPUT:
389 RETVAL
390
391GdkPixbuf_noinc *
392load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0)
198 CODE: 393 CODE:
199{ 394{
200 struct jpeg_decompress_struct cinfo; 395 struct jpeg_decompress_struct cinfo;
201 struct jpg_err_mgr jerr; 396 struct jpg_err_mgr jerr;
202 guchar *data; 397 guchar *data;
203 int rs; 398 int rs;
204 FILE *fp; 399 FILE *fp;
205 volatile GdkPixbuf *pb = 0; 400 volatile GdkPixbuf *pb = 0;
206 gchar *filename;
207 401
208 RETVAL = 0; 402 RETVAL = 0;
209 403
210 filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
211 fp = fopen (filename, "rb"); 404 fp = fopen (SvPVbyte_nolen (path), "rb");
212 g_free (filename);
213 405
214 if (!fp) 406 if (!fp)
215 XSRETURN_UNDEF; 407 XSRETURN_UNDEF;
216 408
409 perlinterp_release ();
410
217 cinfo.err = jpeg_std_error (&jerr.err); 411 cinfo.err = jpeg_std_error (&jerr.err);
218 412
219 jerr.err.error_exit = cv_error_exit; 413 jerr.err.error_exit = cv_error_exit;
220 jerr.err.output_message = cv_error_output; 414 jerr.err.output_message = cv_error_output;
221 415
… …
225 jpeg_destroy_decompress (&cinfo); 419 jpeg_destroy_decompress (&cinfo);
226 420
227 if (pb) 421 if (pb)
228 g_object_unref ((gpointer)pb); 422 g_object_unref ((gpointer)pb);
229 423
424 perlinterp_acquire ();
230 XSRETURN_UNDEF; 425 XSRETURN_UNDEF;
231 } 426 }
232 427
233 jpeg_create_decompress (&cinfo); 428 jpeg_create_decompress (&cinfo);
234 429
… …
250 { 445 {
251 cinfo.dct_method = JDCT_FASTEST; 446 cinfo.dct_method = JDCT_FASTEST;
252 cinfo.do_fancy_upsampling = FALSE; 447 cinfo.do_fancy_upsampling = FALSE;
253 448
254 while (cinfo.scale_denom < 8 449 while (cinfo.scale_denom < 8
255 && cinfo.output_width >= IW*4 450 && cinfo.output_width >= iw*4
256 && cinfo.output_height >= IH*4) 451 && cinfo.output_height >= ih*4)
257 { 452 {
258 cinfo.scale_denom <<= 1; 453 cinfo.scale_denom <<= 1;
259 jpeg_calc_output_dimensions (&cinfo); 454 jpeg_calc_output_dimensions (&cinfo);
260 } 455 }
261 } 456 }
262 457
458 if (cinfo.output_components != 3)
459 longjmp (jerr.setjmp_buffer, 3);
460
461 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
462 {
463 cinfo.out_color_space = JCS_CMYK;
464 cinfo.output_components = 4;
465 }
466
263 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 467 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
264 if (!RETVAL) 468 if (!RETVAL)
265 longjmp (jerr.setjmp_buffer, 2); 469 longjmp (jerr.setjmp_buffer, 2);
266 470
267 data = gdk_pixbuf_get_pixels (RETVAL); 471 data = gdk_pixbuf_get_pixels (RETVAL);
268 rs = gdk_pixbuf_get_rowstride (RETVAL); 472 rs = gdk_pixbuf_get_rowstride (RETVAL);
269
270 if (cinfo.output_components != 3)
271 longjmp (jerr.setjmp_buffer, 3);
272 473
273 jpeg_start_decompress (&cinfo); 474 jpeg_start_decompress (&cinfo);
274 475
275 while (cinfo.output_scanline < cinfo.output_height) 476 while (cinfo.output_scanline < cinfo.output_height)
276 { 477 {
… …
283 rp [3] = (guchar *)rp [2] + rs; 484 rp [3] = (guchar *)rp [2] + rs;
284 485
285 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 486 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
286 } 487 }
287 488
489 if (cinfo.out_color_space == JCS_CMYK)
490 {
491 guchar *end = data + cinfo.output_height * rs;
492
493 while (data < end)
494 {
495 U32 c = data [0];
496 U32 m = data [1];
497 U32 y = data [2];
498 U32 k = data [3];
499
500 if (0)
501 if (cinfo.Adobe_transform == 2)
502 {
503 c ^= 0xff;
504 m ^= 0xff;
505 y ^= 0xff;
506 k ^= 0xff;
507 }
508
509 data [0] = (c * k + 0x80) / 0xff;
510 data [1] = (m * k + 0x80) / 0xff;
511 data [2] = (y * k + 0x80) / 0xff;
512 data [3] = 0xff;
513
514 data += 4;
515 }
516 }
517
288 jpeg_finish_decompress (&cinfo); 518 jpeg_finish_decompress (&cinfo);
289 fclose (fp); 519 fclose (fp);
290 jpeg_destroy_decompress (&cinfo); 520 jpeg_destroy_decompress (&cinfo);
521 perlinterp_acquire ();
291} 522}
292 OUTPUT: 523 OUTPUT:
293 RETVAL 524 RETVAL
294 525
526void
527compare (GdkPixbuf *a, GdkPixbuf *b)
528 PPCODE:
529 perlinterp_release ();
530{
531 int w = gdk_pixbuf_get_width (a);
532 int h = gdk_pixbuf_get_height (a);
533
534 int sa = gdk_pixbuf_get_rowstride (a);
535 int sb = gdk_pixbuf_get_rowstride (b);
536
537 guchar *pa = gdk_pixbuf_get_pixels (a);
538 guchar *pb = gdk_pixbuf_get_pixels (b);
539
540 int x, y;
541
542 assert (w == gdk_pixbuf_get_width (b));
543 assert (h == gdk_pixbuf_get_height (b));
544
545 assert (gdk_pixbuf_get_n_channels (a) == 3);
546 assert (gdk_pixbuf_get_n_channels (b) == 3);
547
548 double diff = 0.;
549 int peak = 0;
550
551 if (w && h)
552 for (y = 0; y < h; y++)
553 {
554 guchar *pa_ = pa + y * sa;
555 guchar *pb_ = pb + y * sb;
556
557 for (x = 0; x < w; x++)
558 {
559 int d;
560
561 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
562 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
563 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
564 }
565 }
566
567 perlinterp_acquire ();
568
569 EXTEND (SP, 2);
570 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
571 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
572}
573
295############################################################################# 574#############################################################################
296 575
297MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 576MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
577
578# currently only works for filenames (octet strings)
298 579
299SV * 580SV *
300foldcase (SV *pathsv) 581foldcase (SV *pathsv)
301 PROTOTYPE: $ 582 PROTOTYPE: $
302 CODE: 583 CODE:
303{ 584{
304 STRLEN plen; 585 STRLEN plen;
305 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 586 U8 *path = (U8 *)SvPV (pathsv, plen);
306 U8 *pend = path + plen; 587 U8 *pend = path + plen;
307 U8 dst [plen * 6 * 3], *dstp = dst; 588 U8 dst [plen * 6 * 3], *dstp = dst;
308 589
309 while (path < pend) 590 while (path < pend)
310 { 591 {
311 U8 ch = *path; 592 U8 ch = *path;
312 593
313 if (ch >= 'a' && ch <= 'z') 594 if (ch >= 'a' && ch <= 'z')
314 *dstp++ = *path++; 595 *dstp++ = *path++;
596 else if (ch >= 'A' && ch <= 'Z')
597 *dstp++ = *path++ + ('a' - 'A');
315 else if (ch >= '0' && ch <= '9') 598 else if (ch >= '0' && ch <= '9')
316 { 599 {
317 STRLEN el, nl = 0; 600 STRLEN el, nl = 0;
318 while (*path >= '0' && *path <= '9' && path < pend) 601 while (*path >= '0' && *path <= '9' && path < pend)
319 path++, nl++; 602 path++, nl++;
… …
322 *dstp++ = '0'; 605 *dstp++ = '0';
323 606
324 memcpy (dstp, path - nl, nl); 607 memcpy (dstp, path - nl, nl);
325 dstp += nl; 608 dstp += nl;
326 } 609 }
610 else
611 *dstp++ = *path++;
612#if 0
327 else 613 else
328 { 614 {
329 STRLEN cl; 615 STRLEN cl;
330 to_utf8_fold (path, dstp, &cl); 616 to_utf8_fold (path, dstp, &cl);
331 dstp += cl; 617 dstp += cl;
332 path += is_utf8_char (path); 618 path += is_utf8_char (path);
333 } 619 }
620#endif
334 } 621 }
335 622
336 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 623 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
337} 624}
338 OUTPUT: 625 OUTPUT:
… …
500############################################################################# 787#############################################################################
501 788
502MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 789MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
503 790
504SV * 791SV *
505make_histograms (SV *ar) 792extract_features (SV *ar)
506 CODE: 793 CODE:
507{ 794{
508 int i; 795 int i;
509 AV *av, *result; 796 AV *av, *result;
510 797
511 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 798 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
512 croak ("Not an array ref as first argument to make_histogram"); 799 croak ("Not an array ref as first argument to extract_features");
513 800
514 av = (AV *) SvRV (ar); 801 av = (AV *) SvRV (ar);
515 result = newAV (); 802 result = newAV ();
516 803
517 for (i = 0; i <= av_len (av); ++i) 804 for (i = 0; i <= av_len (av); ++i)
518 { 805 {
519 const int HISTSIZE = 64;
520
521 int j;
522 SV *sv = *av_fetch (av, i, 1); 806 SV *sv = *av_fetch (av, i, 1);
523 STRLEN len;
524 char *buf = SvPVbyte (sv, len);
525
526 int tmphist[HISTSIZE];
527 float *hist;
528
529 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); 807 SV *histsv = newSV (9 * sizeof (float) + 1);
808
530 SvPOK_on (histsv); 809 SvPOK_on (histsv);
531 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 810 SvCUR_set (histsv, 9 * sizeof (float));
532 hist = (float *)SvPVX (histsv); 811 float *hist = (float *)SvPVX (histsv);
533 812
534 Zero (tmphist, sizeof (tmphist), char); 813 struct feature f_h, f_s, f_v;
814 feature_init (&f_h);
815 feature_init (&f_s);
816 feature_init (&f_v);
535 817
536 for (j = len; j--; )
537 {
538 unsigned int idx
539 = ((*buf & 0xc0) >> 2)
540 | ((*buf & 0x18) >> 1)
541 | (*buf & 0x03);
542
543 ++tmphist[idx];
544 ++buf;
545 }
546 818 {
547 for (j = 0; j < HISTSIZE; ++j) 819 STRLEN len;
548 hist[j] = (float)tmphist[j] / (len + 1e-30); 820 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
821 while (len >= 3)
822 {
823 unsigned int r, g, b, h, s, v;
824 r = *buf++; g = *buf++; b = *buf++;
825 rgb_to_hsv (r, g, b, &h, &s, &v);
826
827 feature_update_pass_1 (&f_h, h);
828 feature_update_pass_1 (&f_s, s);
829 feature_update_pass_1 (&f_v, v);
830
831 len -= 3;
832 }
833
834 feature_finish_pass_1 (&f_h);
835 feature_finish_pass_1 (&f_s);
836 feature_finish_pass_1 (&f_v);
837 }
838
839 {
840 STRLEN len;
841 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
842 while (len >= 3)
843 {
844 unsigned int r, g, b, h, s, v;
845 r = *buf++; g = *buf++; b = *buf++;
846 rgb_to_hsv (r, g, b, &h, &s, &v);
847
848 feature_update_pass_2 (&f_h, h);
849 feature_update_pass_2 (&f_s, s);
850 feature_update_pass_2 (&f_v, v);
851
852 len -= 3;
853 }
854
855 feature_finish_pass_2 (&f_h);
856 feature_finish_pass_2 (&f_s);
857 feature_finish_pass_2 (&f_v);
858 }
859
860 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
861 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
862 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
549 863
550 av_push (result, histsv); 864 av_push (result, histsv);
551 } 865 }
552 866
553 RETVAL = newRV_noinc ((SV *)result); 867 RETVAL = newRV_noinc ((SV *)result);
554} 868}
555 OUTPUT: 869 OUTPUT:
556 RETVAL 870 RETVAL
557 871
558

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