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Comparing CV/CV.xs (file contents):
Revision 1.36 by root, Thu Jun 22 20:50:05 2006 UTC vs.
Revision 1.54 by root, Sat Dec 23 08:04:48 2017 UTC

… …
7#include <math.h> 7#include <math.h>
8 8
9#include <magic.h> 9#include <magic.h>
10 10
11#include <jpeglib.h> 11#include <jpeglib.h>
12#include <jerror.h>
13
12#include <glib.h> 14#include <glib.h>
13#include <gtk/gtk.h> 15#include <gtk/gtk.h>
16#include <gdk/gdkx.h>
14#include <gdk-pixbuf/gdk-pixbuf.h> 17#include <gdk-pixbuf/gdk-pixbuf.h>
15 18
16#include <gperl.h> 19#include <gperl.h>
17#include <gtk2perl.h> 20#include <gtk2perl.h>
18 21
22#include <assert.h>
23
24#if WEBP
25#include <webp/demux.h>
26#include <webp/decode.h>
27#endif
28
29#include "perlmulticore.h"
30
19#define IW 80 /* MUST match Schnauzer.pm! */ 31#define IW 80 /* MUST match Schnauzer.pm! */
20#define IH 60 /* MUST match Schnauzer.pm! */ 32#define IH 60 /* MUST match Schnauzer.pm! */
21 33
22#define RAND (seed = (seed + 7141) * 54773 % 134456) 34#define RAND (seed = (seed + 7141) * 54773 % 134456)
23 35
24#define LINELENGTH 240 36#define LINELENGTH 240
25 37
26#define ELLIPSIS "\xe2\x80\xa6" 38#define ELLIPSIS "\xe2\x80\xa6"
39
40typedef char *octet_string;
41
42static magic_t magic_cookie[2]; /* !mime, mime */
27 43
28struct jpg_err_mgr 44struct jpg_err_mgr
29{ 45{
30 struct jpeg_error_mgr err; 46 struct jpeg_error_mgr err;
31 jmp_buf setjmp_buffer; 47 jmp_buf setjmp_buffer;
32}; 48};
33 49
34static void 50static void
35cv_error_exit (j_common_ptr cinfo) 51cv_error_exit (j_common_ptr cinfo)
36{ 52{
53 cinfo->err->output_message (cinfo);
37 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); 54 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
38} 55}
39 56
40static void 57static void
41cv_error_output (j_common_ptr cinfo) 58cv_error_output (j_common_ptr cinfo)
42{ 59{
60 char msg[JMSG_LENGTH_MAX];
61
62 cinfo->err->format_message (cinfo, msg);
63
64 fprintf (stderr, "JPEG decoding error: %s\n", msg);
43 return; 65 return;
44} 66}
45 67
46static void 68static void
47rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, 69rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
… …
118 return; 140 return;
119 141
120 f->v2 /= f->n; 142 f->v2 /= f->n;
121 f->v3 /= f->n; 143 f->v3 /= f->n;
122 144
123 // this is a peculiar weightung, but it works fine
124 f->v1 /= 255.; 145 f->v1 /= 255.;
125 f->v2 /= 128. * 128.; 146 f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
126 f->v3 /= 128. * 128. * 64.; 147 f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
127} 148}
128 149
129static guint32 a85_val; 150static guint32 a85_val;
130static guint a85_cnt; 151static guint a85_cnt;
131static guchar a85_buf[LINELENGTH], *a85_ptr; 152static guchar a85_buf[LINELENGTH], *a85_ptr;
… …
145 if (!--a85_cnt) 166 if (!--a85_cnt)
146 { 167 {
147 a85_cnt = 4; 168 a85_cnt = 4;
148 if (a85_val) 169 if (a85_val)
149 { 170 {
150 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; 171 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
151 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; 172 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
152 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; 173 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
153 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; 174 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
154 a85_ptr[0] = (a85_val ) + 33; 175 a85_ptr[0] = (a85_val ) + 33;
155 176
156 a85_ptr += 5; 177 a85_ptr += 5;
157 } 178 }
… …
181 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 202 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
182} 203}
183 204
184///////////////////////////////////////////////////////////////////////////// 205/////////////////////////////////////////////////////////////////////////////
185 206
207static void cv_ms_init (j_decompress_ptr cinfo)
208{
209}
210
211static void cv_ms_term (j_decompress_ptr cinfo)
212{
213}
214
215static boolean cv_ms_fill (j_decompress_ptr cinfo)
216{
217 ERREXIT (cinfo, JERR_INPUT_EMPTY);
218
219 return TRUE;
220}
221
222static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
223{
224 if (num_bytes > 0)
225 {
226 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
227
228 src->next_input_byte += num_bytes;
229 src->bytes_in_buffer -= num_bytes;
230 }
231}
232
233static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
234{
235 struct jpeg_source_mgr *src;
236
237 if (!cinfo->src)
238 cinfo->src = (struct jpeg_source_mgr *)
239 (*cinfo->mem->alloc_small) (
240 (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
241 );
242
243 src = (struct jpeg_source_mgr *)cinfo->src;
244 src->init_source = cv_ms_init;
245 src->fill_input_buffer = cv_ms_fill;
246 src->skip_input_data = cv_ms_skip;
247 src->resync_to_restart = jpeg_resync_to_restart;
248 src->term_source = cv_ms_term;
249 src->next_input_byte = (JOCTET *)buf;
250 src->bytes_in_buffer = buflen;
251}
252
253/////////////////////////////////////////////////////////////////////////////
254
186MODULE = Gtk2::CV PACKAGE = Gtk2::CV 255MODULE = Gtk2::CV PACKAGE = Gtk2::CV
187 256
188PROTOTYPES: ENABLE 257PROTOTYPES: ENABLE
189 258
190# missing function in perl. really :) 259# missing function in perl. really :)
… …
203 272
204 OUTPUT: 273 OUTPUT:
205 RETVAL 274 RETVAL
206 275
207const char * 276const char *
208magic (const char *path) 277magic (SV *path_or_data)
278 ALIAS:
279 magic = 0
280 magic_mime = 1
281 magic_buffer = 2
282 magic_buffer_mime = 3
209 CODE: 283 CODE:
210{ 284{
211 static magic_t cookie; 285 STRLEN len;
286 char *data = SvPVbyte (path_or_data, len);
212 287
213 if (!cookie) 288 if (!magic_cookie[0])
289 {
290 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
291 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
292 magic_load (magic_cookie[0], 0);
293 magic_load (magic_cookie[1], 0);
214 { 294 }
215 cookie = magic_open (MAGIC_NONE);
216 295
217 if (cookie) 296 perlinterp_release ();
218 magic_load (cookie, 0);
219 else
220 XSRETURN_UNDEF;
221 }
222 297
223 RETVAL = magic_file (cookie, path); 298 RETVAL = ix & 2
299 ? magic_buffer (magic_cookie[ix & 1], data, len)
300 : magic_file (magic_cookie[ix & 1], data);
301
302 perlinterp_acquire ();
224} 303}
225 OUTPUT: 304 OUTPUT:
226 RETVAL 305 RETVAL
227 306
228const char *
229magic_mime (const char *path)
230 CODE:
231{
232 static magic_t cookie;
233
234 if (!cookie)
235 {
236 cookie = magic_open (MAGIC_MIME);
237
238 if (cookie)
239 magic_load (cookie, 0);
240 else
241 XSRETURN_UNDEF;
242 }
243
244 RETVAL = magic_file (cookie, path);
245}
246 OUTPUT:
247 RETVAL
248
249# missing in Gtk2 perl module 307# missing/broken in Gtk2 perl module
308
309void
310gdk_window_clear_hints (GdkWindow *window)
311 CODE:
312 gdk_window_set_geometry_hints (window, 0, 0);
250 313
251gboolean 314gboolean
252gdk_net_wm_supports (GdkAtom property) 315gdk_net_wm_supports (GdkAtom property)
253 CODE: 316 CODE:
254#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 317#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
260 RETVAL 323 RETVAL
261 324
262GdkPixbuf_noinc * 325GdkPixbuf_noinc *
263dealpha_expose (GdkPixbuf *pb) 326dealpha_expose (GdkPixbuf *pb)
264 CODE: 327 CODE:
328 perlinterp_release ();
265{ 329{
266 int w = gdk_pixbuf_get_width (pb); 330 int w = gdk_pixbuf_get_width (pb);
267 int h = gdk_pixbuf_get_height (pb); 331 int h = gdk_pixbuf_get_height (pb);
268 int bpp = gdk_pixbuf_get_n_channels (pb); 332 int bpp = gdk_pixbuf_get_n_channels (pb);
269 int x, y, i; 333 int x, y, i;
… …
278 for (x = 0; x < w; x++) 342 for (x = 0; x < w; x++)
279 for (y = 0; y < h; y++) 343 for (y = 0; y < h; y++)
280 for (i = 0; i < 3; i++) 344 for (i = 0; i < 3; i++)
281 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 345 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
282} 346}
347 perlinterp_acquire ();
283 OUTPUT: 348 OUTPUT:
284 RETVAL 349 RETVAL
285 350
286GdkPixbuf_noinc * 351GdkPixbuf_noinc *
287rotate (GdkPixbuf *pb, int angle) 352rotate (GdkPixbuf *pb, int angle)
288 CODE: 353 CODE:
354 perlinterp_release ();
355 if (angle < 0)
356 angle += 360;
289 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 357 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
290 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 358 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
291 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 359 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
292 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 360 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
293 : angle); 361 : angle);
362 perlinterp_acquire ();
294 OUTPUT: 363 OUTPUT:
295 RETVAL 364 RETVAL
296 365
366const char *
367filetype (SV *image_data)
368 CODE:
369{
370 STRLEN data_len;
371 U8 *data = SvPVbyte (image_data, data_len);
372
373 if (data_len >= 20
374 && data[0] == 0xff
375 && data[1] == 0xd8
376 && data[2] == 0xff)
377 RETVAL = "jpg";
378 else if (data_len >= 12
379 && data[ 0] == (U8)'R'
380 && data[ 1] == (U8)'I'
381 && data[ 2] == (U8)'F'
382 && data[ 3] == (U8)'F'
383 && data[ 8] == (U8)'W'
384 && data[ 9] == (U8)'E'
385 && data[10] == (U8)'B'
386 && data[11] == (U8)'P')
387 RETVAL = "webp";
388 else if (data_len >= 16
389 && data[ 0] == 0x89
390 && data[ 1] == (U8)'P'
391 && data[ 2] == (U8)'N'
392 && data[ 3] == (U8)'G'
393 && data[ 4] == 0x0d
394 && data[ 5] == 0x0a
395 && data[ 6] == 0x1a
396 && data[ 7] == 0x0a)
397 RETVAL = "png";
398 else
399 RETVAL = "other";
400}
401 OUTPUT:
402 RETVAL
403
297GdkPixbuf_noinc * 404GdkPixbuf_noinc *
298load_jpeg (SV *path, int thumbnail=0) 405decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
406 CODE:
407{
408#if WEBP
409 STRLEN data_size;
410 int alpha;
411 WebPData data;
412 WebPDemuxer *demux;
413 WebPIterator iter;
414 WebPDecoderConfig config;
415 int inw, inh;
416
417 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
418 data.size = data_size;
419
420 perlinterp_release ();
421
422 RETVAL = 0;
423
424 if (!(demux = WebPDemux (&data)))
425 goto err_demux;
426
427 if (!WebPDemuxGetFrame (demux, 1, &iter))
428 goto err_iter;
429
430 if (!WebPInitDecoderConfig (&config))
431 goto err_iter;
432
433 config.options.use_threads = 1;
434
435 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
436 goto err_iter;
437
438 inw = config.input.width;
439 inh = config.input.height;
440
441 if (thumbnail)
442 {
443 if (inw * ih > inh * iw)
444 ih = (iw * inh + inw - 1) / inw;
445 else
446 iw = (ih * inw + inh - 1) / inh;
447
448 config.options.bypass_filtering = 1;
449 config.options.no_fancy_upsampling = 1;
450
451 config.options.use_scaling = 1;
452 config.options.scaled_width = iw;
453 config.options.scaled_height = ih;
454 }
455 else
456 {
457 iw = inw;
458 ih = inh;
459 }
460
461 alpha = !!config.input.has_alpha;
462
463 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
464 if (!RETVAL)
465 goto err_iter;
466
467 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
468 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
469 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
470 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
471 config.output.is_external_memory = 1;
472
473 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
474 {
475 g_object_unref (RETVAL);
476 RETVAL = 0;
477 goto err_iter;
478 }
479
480 err_iter:
481 WebPDemuxReleaseIterator (&iter);
482 err_demux:
483
484 perlinterp_acquire ();
485#else
486 croak ("load_webp: webp not enabled at compile time");
487#endif
488}
489 OUTPUT:
490 RETVAL
491
492GdkPixbuf_noinc *
493decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
299 CODE: 494 CODE:
300{ 495{
301 struct jpeg_decompress_struct cinfo; 496 struct jpeg_decompress_struct cinfo;
302 struct jpg_err_mgr jerr; 497 struct jpg_err_mgr jerr;
303 guchar *data;
304 int rs; 498 int rs;
305 FILE *fp;
306 volatile GdkPixbuf *pb = 0; 499 volatile GdkPixbuf *pb = 0;
500 STRLEN data_len;
501 guchar *data = SvPVbyte (image_data, data_len);
307 502
308 RETVAL = 0; 503 RETVAL = 0;
309 504
310 fp = fopen (SvPVbyte_nolen (path), "rb"); 505 perlinterp_release ();
311
312 if (!fp)
313 XSRETURN_UNDEF;
314 506
315 cinfo.err = jpeg_std_error (&jerr.err); 507 cinfo.err = jpeg_std_error (&jerr.err);
316 508
317 jerr.err.error_exit = cv_error_exit; 509 jerr.err.error_exit = cv_error_exit;
318 jerr.err.output_message = cv_error_output; 510 jerr.err.output_message = cv_error_output;
319 511
320 if ((rs = setjmp (jerr.setjmp_buffer))) 512 if ((rs = setjmp (jerr.setjmp_buffer)))
321 { 513 {
322 fclose (fp);
323 jpeg_destroy_decompress (&cinfo); 514 jpeg_destroy_decompress (&cinfo);
324 515
325 if (pb) 516 if (pb)
326 g_object_unref ((gpointer)pb); 517 g_object_unref ((gpointer)pb);
327 518
519 perlinterp_acquire ();
328 XSRETURN_UNDEF; 520 XSRETURN_UNDEF;
329 } 521 }
330 522
331 jpeg_create_decompress (&cinfo); 523 jpeg_create_decompress (&cinfo);
524 cv_jpeg_mem_src (&cinfo, data, data_len);
332 525
333 jpeg_stdio_src (&cinfo, fp);
334 jpeg_read_header (&cinfo, TRUE); 526 jpeg_read_header (&cinfo, TRUE);
335 527
336 cinfo.dct_method = JDCT_DEFAULT; 528 cinfo.dct_method = JDCT_DEFAULT;
337 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 529 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
338 cinfo.do_block_smoothing = FALSE; 530 cinfo.do_block_smoothing = FALSE;
… …
348 { 540 {
349 cinfo.dct_method = JDCT_FASTEST; 541 cinfo.dct_method = JDCT_FASTEST;
350 cinfo.do_fancy_upsampling = FALSE; 542 cinfo.do_fancy_upsampling = FALSE;
351 543
352 while (cinfo.scale_denom < 8 544 while (cinfo.scale_denom < 8
353 && cinfo.output_width >= IW*4 545 && cinfo.output_width >= iw*4
354 && cinfo.output_height >= IH*4) 546 && cinfo.output_height >= ih*4)
355 { 547 {
356 cinfo.scale_denom <<= 1; 548 cinfo.scale_denom <<= 1;
357 jpeg_calc_output_dimensions (&cinfo); 549 jpeg_calc_output_dimensions (&cinfo);
358 } 550 }
359 } 551 }
360 552
553 if (cinfo.output_components != 3)
554 longjmp (jerr.setjmp_buffer, 3);
555
556 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
557 {
558 cinfo.out_color_space = JCS_CMYK;
559 cinfo.output_components = 4;
560 }
561
361 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 562 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
362 if (!RETVAL) 563 if (!RETVAL)
363 longjmp (jerr.setjmp_buffer, 2); 564 longjmp (jerr.setjmp_buffer, 2);
364 565
365 data = gdk_pixbuf_get_pixels (RETVAL); 566 data = gdk_pixbuf_get_pixels (RETVAL);
366 rs = gdk_pixbuf_get_rowstride (RETVAL); 567 rs = gdk_pixbuf_get_rowstride (RETVAL);
367
368 if (cinfo.output_components != 3)
369 longjmp (jerr.setjmp_buffer, 3);
370 568
371 jpeg_start_decompress (&cinfo); 569 jpeg_start_decompress (&cinfo);
372 570
373 while (cinfo.output_scanline < cinfo.output_height) 571 while (cinfo.output_scanline < cinfo.output_height)
374 { 572 {
… …
381 rp [3] = (guchar *)rp [2] + rs; 579 rp [3] = (guchar *)rp [2] + rs;
382 580
383 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 581 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
384 } 582 }
385 583
584 if (cinfo.out_color_space == JCS_CMYK)
585 {
586 guchar *end = data + cinfo.output_height * rs;
587
588 while (data < end)
589 {
590 U32 c = data [0];
591 U32 m = data [1];
592 U32 y = data [2];
593 U32 k = data [3];
594
595 if (0)
596 if (cinfo.Adobe_transform == 2)
597 {
598 c ^= 0xff;
599 m ^= 0xff;
600 y ^= 0xff;
601 k ^= 0xff;
602 }
603
604 data [0] = (c * k + 0x80) / 0xff;
605 data [1] = (m * k + 0x80) / 0xff;
606 data [2] = (y * k + 0x80) / 0xff;
607 data [3] = 0xff;
608
609 data += 4;
610 }
611 }
612
386 jpeg_finish_decompress (&cinfo); 613 jpeg_finish_decompress (&cinfo);
387 fclose (fp);
388 jpeg_destroy_decompress (&cinfo); 614 jpeg_destroy_decompress (&cinfo);
615 perlinterp_acquire ();
389} 616}
390 OUTPUT: 617 OUTPUT:
391 RETVAL 618 RETVAL
392 619
393void 620void
394compare (GdkPixbuf *a, GdkPixbuf *b) 621compare (GdkPixbuf *a, GdkPixbuf *b)
395 PPCODE: 622 PPCODE:
623 perlinterp_release ();
396{ 624{
397 int w = gdk_pixbuf_get_width (a); 625 int w = gdk_pixbuf_get_width (a);
398 int h = gdk_pixbuf_get_height (a); 626 int h = gdk_pixbuf_get_height (a);
627
399 int sa = gdk_pixbuf_get_rowstride (a); 628 int sa = gdk_pixbuf_get_rowstride (a);
400 int sb = gdk_pixbuf_get_rowstride (b); 629 int sb = gdk_pixbuf_get_rowstride (b);
401 630
402 guchar *pa = gdk_pixbuf_get_pixels (a); 631 guchar *pa = gdk_pixbuf_get_pixels (a);
403 guchar *pb = gdk_pixbuf_get_pixels (b); 632 guchar *pb = gdk_pixbuf_get_pixels (b);
… …
427 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 656 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
428 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 657 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
429 } 658 }
430 } 659 }
431 660
661 perlinterp_acquire ();
662
432 EXTEND (SP, 2); 663 EXTEND (SP, 2);
433 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); 664 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
434 PUSHs (sv_2mortal (newSVnv (peak / 255.))); 665 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
435} 666}
436 667
437############################################################################# 668#############################################################################
438 669
439MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 670MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
440 671
672# currently only works for filenames (octet strings)
673
441SV * 674SV *
442foldcase (SV *pathsv) 675foldcase (SV *pathsv)
443 PROTOTYPE: $ 676 PROTOTYPE: $
444 CODE: 677 CODE:
445{ 678{
446 STRLEN plen; 679 STRLEN plen;
447 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 680 U8 *path = (U8 *)SvPV (pathsv, plen);
448 U8 *pend = path + plen; 681 U8 *pend = path + plen;
449 U8 dst [plen * 6 * 3], *dstp = dst; 682 U8 dst [plen * 6 * 3], *dstp = dst;
450 683
451 while (path < pend) 684 while (path < pend)
452 { 685 {
453 U8 ch = *path; 686 U8 ch = *path;
454 687
455 if (ch >= 'a' && ch <= 'z') 688 if (ch >= 'a' && ch <= 'z')
456 *dstp++ = *path++; 689 *dstp++ = *path++;
690 else if (ch >= 'A' && ch <= 'Z')
691 *dstp++ = *path++ + ('a' - 'A');
457 else if (ch >= '0' && ch <= '9') 692 else if (ch >= '0' && ch <= '9')
458 { 693 {
459 STRLEN el, nl = 0; 694 STRLEN el, nl = 0;
460 while (*path >= '0' && *path <= '9' && path < pend) 695 while (*path >= '0' && *path <= '9' && path < pend)
461 path++, nl++; 696 path++, nl++;
… …
464 *dstp++ = '0'; 699 *dstp++ = '0';
465 700
466 memcpy (dstp, path - nl, nl); 701 memcpy (dstp, path - nl, nl);
467 dstp += nl; 702 dstp += nl;
468 } 703 }
704 else
705 *dstp++ = *path++;
706#if 0
469 else 707 else
470 { 708 {
471 STRLEN cl; 709 STRLEN cl;
472 to_utf8_fold (path, dstp, &cl); 710 to_utf8_fold (path, dstp, &cl);
473 dstp += cl; 711 dstp += cl;
474 path += is_utf8_char (path); 712 path += is_utf8_char (path);
475 } 713 }
714#endif
476 } 715 }
477 716
478 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 717 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
479} 718}
480 OUTPUT: 719 OUTPUT:
… …
649{ 888{
650 int i; 889 int i;
651 AV *av, *result; 890 AV *av, *result;
652 891
653 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 892 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
654 croak ("Not an array ref as first argument to make_histogram"); 893 croak ("Not an array ref as first argument to extract_features");
655 894
656 av = (AV *) SvRV (ar); 895 av = (AV *) SvRV (ar);
657 result = newAV (); 896 result = newAV ();
658 897
659 for (i = 0; i <= av_len (av); ++i) 898 for (i = 0; i <= av_len (av); ++i)
… …
712 feature_finish_pass_2 (&f_v); 951 feature_finish_pass_2 (&f_v);
713 } 952 }
714 953
715 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; 954 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
716 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; 955 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
717 hist [6] = f_v.v1 ; hist [7] = f_v.v2 ; hist [8] = f_v.v3 ; 956 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
718 957
719 av_push (result, histsv); 958 av_push (result, histsv);
720 } 959 }
721 960
722 RETVAL = newRV_noinc ((SV *)result); 961 RETVAL = newRV_noinc ((SV *)result);
723} 962}
724 OUTPUT: 963 OUTPUT:
725 RETVAL 964 RETVAL
726 965
727SV *
728make_histograms (SV *ar)
729 CODE:
730{
731 int i;
732 AV *av, *result;
733
734 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
735 croak ("Not an array ref as first argument to make_histogram");
736
737 av = (AV *) SvRV (ar);
738 result = newAV ();
739
740 for (i = 0; i <= av_len (av); ++i)
741 {
742 const int HISTSIZE = 64;
743
744 int j;
745 SV *sv = *av_fetch (av, i, 1);
746 STRLEN len;
747 char *buf = SvPVbyte (sv, len);
748
749 int tmphist[HISTSIZE];
750 float *hist;
751
752 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1);
753 SvPOK_on (histsv);
754 SvCUR_set (histsv, HISTSIZE * sizeof (float));
755 hist = (float *)SvPVX (histsv);
756
757 Zero (tmphist, sizeof (tmphist), char);
758
759 for (j = len; j--; )
760 {
761 unsigned int idx
762 = ((*buf & 0xc0) >> 2)
763 | ((*buf & 0x18) >> 1)
764 | (*buf & 0x03);
765
766 ++tmphist[idx];
767 ++buf;
768 }
769
770 for (j = 0; j < HISTSIZE; ++j)
771 hist[j] = (float)tmphist[j] / (len + 1e-30);
772
773 av_push (result, histsv);
774 }
775
776 RETVAL = newRV_noinc ((SV *)result);
777}
778 OUTPUT:
779 RETVAL
780
781

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