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Comparing CV/CV.xs (file contents):
Revision 1.38 by root, Thu Jun 22 22:06:00 2006 UTC vs.
Revision 1.53 by root, Sat Dec 23 05:27:04 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/decode.h>
26#endif
27
28#include "perlmulticore.h"
29
19#define IW 80 /* MUST match Schnauzer.pm! */ 30#define IW 80 /* MUST match Schnauzer.pm! */
20#define IH 60 /* MUST match Schnauzer.pm! */ 31#define IH 60 /* MUST match Schnauzer.pm! */
21 32
22#define RAND (seed = (seed + 7141) * 54773 % 134456) 33#define RAND (seed = (seed + 7141) * 54773 % 134456)
23 34
24#define LINELENGTH 240 35#define LINELENGTH 240
25 36
26#define ELLIPSIS "\xe2\x80\xa6" 37#define ELLIPSIS "\xe2\x80\xa6"
38
39typedef char *octet_string;
40
41static magic_t magic_cookie[2]; /* !mime, mime */
27 42
28struct jpg_err_mgr 43struct jpg_err_mgr
29{ 44{
30 struct jpeg_error_mgr err; 45 struct jpeg_error_mgr err;
31 jmp_buf setjmp_buffer; 46 jmp_buf setjmp_buffer;
32}; 47};
33 48
34static void 49static void
35cv_error_exit (j_common_ptr cinfo) 50cv_error_exit (j_common_ptr cinfo)
36{ 51{
52 cinfo->err->output_message (cinfo);
37 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); 53 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
38} 54}
39 55
40static void 56static void
41cv_error_output (j_common_ptr cinfo) 57cv_error_output (j_common_ptr cinfo)
42{ 58{
59 char msg[JMSG_LENGTH_MAX];
60
61 cinfo->err->format_message (cinfo, msg);
62
63 fprintf (stderr, "JPEG decoding error: %s\n", msg);
43 return; 64 return;
44} 65}
45 66
46static void 67static void
47rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, 68rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
… …
144 if (!--a85_cnt) 165 if (!--a85_cnt)
145 { 166 {
146 a85_cnt = 4; 167 a85_cnt = 4;
147 if (a85_val) 168 if (a85_val)
148 { 169 {
149 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; 170 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
150 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; 171 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
151 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; 172 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
152 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; 173 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
153 a85_ptr[0] = (a85_val ) + 33; 174 a85_ptr[0] = (a85_val ) + 33;
154 175
155 a85_ptr += 5; 176 a85_ptr += 5;
156 } 177 }
… …
180 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 201 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
181} 202}
182 203
183///////////////////////////////////////////////////////////////////////////// 204/////////////////////////////////////////////////////////////////////////////
184 205
206static void cv_ms_init (j_decompress_ptr cinfo)
207{
208}
209
210static void cv_ms_term (j_decompress_ptr cinfo)
211{
212}
213
214static boolean cv_ms_fill (j_decompress_ptr cinfo)
215{
216 ERREXIT (cinfo, JERR_INPUT_EMPTY);
217
218 return TRUE;
219}
220
221static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
222{
223 if (num_bytes > 0)
224 {
225 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
226
227 src->next_input_byte += num_bytes;
228 src->bytes_in_buffer -= num_bytes;
229 }
230}
231
232static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
233{
234 struct jpeg_source_mgr *src;
235
236 if (!cinfo->src)
237 cinfo->src = (struct jpeg_source_mgr *)
238 (*cinfo->mem->alloc_small) (
239 (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
240 );
241
242 src = (struct jpeg_source_mgr *)cinfo->src;
243 src->init_source = cv_ms_init;
244 src->fill_input_buffer = cv_ms_fill;
245 src->skip_input_data = cv_ms_skip;
246 src->resync_to_restart = jpeg_resync_to_restart;
247 src->term_source = cv_ms_term;
248 src->next_input_byte = (JOCTET *)buf;
249 src->bytes_in_buffer = buflen;
250}
251
252/////////////////////////////////////////////////////////////////////////////
253
185MODULE = Gtk2::CV PACKAGE = Gtk2::CV 254MODULE = Gtk2::CV PACKAGE = Gtk2::CV
186 255
187PROTOTYPES: ENABLE 256PROTOTYPES: ENABLE
188 257
189# missing function in perl. really :) 258# missing function in perl. really :)
… …
202 271
203 OUTPUT: 272 OUTPUT:
204 RETVAL 273 RETVAL
205 274
206const char * 275const char *
207magic (const char *path) 276magic (SV *path_or_data)
277 ALIAS:
278 magic = 0
279 magic_mime = 1
280 magic_buffer = 2
281 magic_buffer_mime = 3
208 CODE: 282 CODE:
209{ 283{
210 static magic_t cookie; 284 STRLEN len;
285 char *data = SvPVbyte (path_or_data, len);
211 286
212 if (!cookie) 287 if (!magic_cookie[0])
288 {
289 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
290 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
291 magic_load (magic_cookie[0], 0);
292 magic_load (magic_cookie[1], 0);
213 { 293 }
214 cookie = magic_open (MAGIC_NONE);
215 294
216 if (cookie) 295 perlinterp_release ();
217 magic_load (cookie, 0);
218 else
219 XSRETURN_UNDEF;
220 }
221 296
222 RETVAL = magic_file (cookie, path); 297 RETVAL = ix & 2
298 ? magic_buffer (magic_cookie[ix & 1], data, len)
299 : magic_file (magic_cookie[ix & 1], data);
300
301 perlinterp_acquire ();
223} 302}
224 OUTPUT: 303 OUTPUT:
225 RETVAL 304 RETVAL
226 305
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
248# missing in Gtk2 perl module 306# missing/broken in Gtk2 perl module
307
308void
309gdk_window_clear_hints (GdkWindow *window)
310 CODE:
311 gdk_window_set_geometry_hints (window, 0, 0);
249 312
250gboolean 313gboolean
251gdk_net_wm_supports (GdkAtom property) 314gdk_net_wm_supports (GdkAtom property)
252 CODE: 315 CODE:
253#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 316#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
259 RETVAL 322 RETVAL
260 323
261GdkPixbuf_noinc * 324GdkPixbuf_noinc *
262dealpha_expose (GdkPixbuf *pb) 325dealpha_expose (GdkPixbuf *pb)
263 CODE: 326 CODE:
327 perlinterp_release ();
264{ 328{
265 int w = gdk_pixbuf_get_width (pb); 329 int w = gdk_pixbuf_get_width (pb);
266 int h = gdk_pixbuf_get_height (pb); 330 int h = gdk_pixbuf_get_height (pb);
267 int bpp = gdk_pixbuf_get_n_channels (pb); 331 int bpp = gdk_pixbuf_get_n_channels (pb);
268 int x, y, i; 332 int x, y, i;
… …
277 for (x = 0; x < w; x++) 341 for (x = 0; x < w; x++)
278 for (y = 0; y < h; y++) 342 for (y = 0; y < h; y++)
279 for (i = 0; i < 3; i++) 343 for (i = 0; i < 3; i++)
280 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 344 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
281} 345}
346 perlinterp_acquire ();
282 OUTPUT: 347 OUTPUT:
283 RETVAL 348 RETVAL
284 349
285GdkPixbuf_noinc * 350GdkPixbuf_noinc *
286rotate (GdkPixbuf *pb, int angle) 351rotate (GdkPixbuf *pb, int angle)
287 CODE: 352 CODE:
353 perlinterp_release ();
354 if (angle < 0)
355 angle += 360;
288 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 356 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
289 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 357 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
290 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 358 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
291 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 359 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
292 : angle); 360 : angle);
361 perlinterp_acquire ();
293 OUTPUT: 362 OUTPUT:
294 RETVAL 363 RETVAL
295 364
365const char *
366filetype (SV *image_data)
367 CODE:
368{
369 STRLEN data_len;
370 U8 *data = SvPVbyte (image_data, data_len);
371
372 if (data_len >= 20
373 && data[0] == 0xff
374 && data[1] == 0xd8
375 && data[2] == 0xff)
376 RETVAL = "jpg";
377 else if (data_len >= 12
378 && data[ 0] == (U8)'R'
379 && data[ 1] == (U8)'I'
380 && data[ 2] == (U8)'F'
381 && data[ 3] == (U8)'F'
382 && data[ 8] == (U8)'W'
383 && data[ 9] == (U8)'E'
384 && data[10] == (U8)'B'
385 && data[11] == (U8)'P')
386 RETVAL = "webp";
387 else if (data_len >= 16
388 && data[ 0] == 0x89
389 && data[ 1] == (U8)'P'
390 && data[ 2] == (U8)'N'
391 && data[ 3] == (U8)'G'
392 && data[ 4] == 0x0d
393 && data[ 5] == 0x0a
394 && data[ 6] == 0x1a
395 && data[ 7] == 0x0a)
396 RETVAL = "png";
397 else
398 RETVAL = "other";
399}
400 OUTPUT:
401 RETVAL
402
296GdkPixbuf_noinc * 403GdkPixbuf_noinc *
297load_jpeg (SV *path, int thumbnail=0) 404decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
405 CODE:
406{
407#if WEBP
408 guchar *data;
409 STRLEN data_size;
410 int alpha;
411 WebPDecoderConfig config;
412 int inw, inh;
413
414 data = SvPVbyte (image_data, data_size);
415
416 perlinterp_release ();
417
418 RETVAL = 0;
419
420 if (!WebPInitDecoderConfig (&config))
421 goto err;
422
423 config.options.use_threads = 1;
424
425 if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK)
426 goto err;
427
428 inw = config.input.width;
429 inh = config.input.height;
430
431 if (thumbnail)
432 {
433 if (inw * ih > inh * iw)
434 ih = (iw * inh + inw - 1) / inw;
435 else
436 iw = (ih * inw + inh - 1) / inh;
437
438 config.options.bypass_filtering = 1;
439 config.options.no_fancy_upsampling = 1;
440
441 config.options.use_scaling = 1;
442 config.options.scaled_width = iw;
443 config.options.scaled_height = ih;
444 }
445 else
446 {
447 iw = inw;
448 ih = inh;
449 }
450
451 alpha = config.input.has_alpha;
452
453 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih);
454 if (!RETVAL)
455 goto err;
456
457 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
458 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
459 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
460 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
461 config.output.is_external_memory = 1;
462
463 if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK)
464 {
465 g_object_unref (RETVAL);
466 RETVAL = 0;
467 goto err;
468 }
469
470 err:
471 perlinterp_acquire ();
472#else
473 croak ("load_webp: webp not enabled at compile time");
474#endif
475}
476 OUTPUT:
477 RETVAL
478
479GdkPixbuf_noinc *
480decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
298 CODE: 481 CODE:
299{ 482{
300 struct jpeg_decompress_struct cinfo; 483 struct jpeg_decompress_struct cinfo;
301 struct jpg_err_mgr jerr; 484 struct jpg_err_mgr jerr;
302 guchar *data;
303 int rs; 485 int rs;
304 FILE *fp;
305 volatile GdkPixbuf *pb = 0; 486 volatile GdkPixbuf *pb = 0;
487 STRLEN data_len;
488 guchar *data = SvPVbyte (image_data, data_len);
306 489
307 RETVAL = 0; 490 RETVAL = 0;
308 491
309 fp = fopen (SvPVbyte_nolen (path), "rb"); 492 perlinterp_release ();
310
311 if (!fp)
312 XSRETURN_UNDEF;
313 493
314 cinfo.err = jpeg_std_error (&jerr.err); 494 cinfo.err = jpeg_std_error (&jerr.err);
315 495
316 jerr.err.error_exit = cv_error_exit; 496 jerr.err.error_exit = cv_error_exit;
317 jerr.err.output_message = cv_error_output; 497 jerr.err.output_message = cv_error_output;
318 498
319 if ((rs = setjmp (jerr.setjmp_buffer))) 499 if ((rs = setjmp (jerr.setjmp_buffer)))
320 { 500 {
321 fclose (fp);
322 jpeg_destroy_decompress (&cinfo); 501 jpeg_destroy_decompress (&cinfo);
323 502
324 if (pb) 503 if (pb)
325 g_object_unref ((gpointer)pb); 504 g_object_unref ((gpointer)pb);
326 505
506 perlinterp_acquire ();
327 XSRETURN_UNDEF; 507 XSRETURN_UNDEF;
328 } 508 }
329 509
330 jpeg_create_decompress (&cinfo); 510 jpeg_create_decompress (&cinfo);
511 cv_jpeg_mem_src (&cinfo, data, data_len);
331 512
332 jpeg_stdio_src (&cinfo, fp);
333 jpeg_read_header (&cinfo, TRUE); 513 jpeg_read_header (&cinfo, TRUE);
334 514
335 cinfo.dct_method = JDCT_DEFAULT; 515 cinfo.dct_method = JDCT_DEFAULT;
336 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 516 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
337 cinfo.do_block_smoothing = FALSE; 517 cinfo.do_block_smoothing = FALSE;
… …
347 { 527 {
348 cinfo.dct_method = JDCT_FASTEST; 528 cinfo.dct_method = JDCT_FASTEST;
349 cinfo.do_fancy_upsampling = FALSE; 529 cinfo.do_fancy_upsampling = FALSE;
350 530
351 while (cinfo.scale_denom < 8 531 while (cinfo.scale_denom < 8
352 && cinfo.output_width >= IW*4 532 && cinfo.output_width >= iw*4
353 && cinfo.output_height >= IH*4) 533 && cinfo.output_height >= ih*4)
354 { 534 {
355 cinfo.scale_denom <<= 1; 535 cinfo.scale_denom <<= 1;
356 jpeg_calc_output_dimensions (&cinfo); 536 jpeg_calc_output_dimensions (&cinfo);
357 } 537 }
358 } 538 }
359 539
540 if (cinfo.output_components != 3)
541 longjmp (jerr.setjmp_buffer, 3);
542
543 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
544 {
545 cinfo.out_color_space = JCS_CMYK;
546 cinfo.output_components = 4;
547 }
548
360 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 549 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
361 if (!RETVAL) 550 if (!RETVAL)
362 longjmp (jerr.setjmp_buffer, 2); 551 longjmp (jerr.setjmp_buffer, 2);
363 552
364 data = gdk_pixbuf_get_pixels (RETVAL); 553 data = gdk_pixbuf_get_pixels (RETVAL);
365 rs = gdk_pixbuf_get_rowstride (RETVAL); 554 rs = gdk_pixbuf_get_rowstride (RETVAL);
366
367 if (cinfo.output_components != 3)
368 longjmp (jerr.setjmp_buffer, 3);
369 555
370 jpeg_start_decompress (&cinfo); 556 jpeg_start_decompress (&cinfo);
371 557
372 while (cinfo.output_scanline < cinfo.output_height) 558 while (cinfo.output_scanline < cinfo.output_height)
373 { 559 {
… …
380 rp [3] = (guchar *)rp [2] + rs; 566 rp [3] = (guchar *)rp [2] + rs;
381 567
382 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 568 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
383 } 569 }
384 570
571 if (cinfo.out_color_space == JCS_CMYK)
572 {
573 guchar *end = data + cinfo.output_height * rs;
574
575 while (data < end)
576 {
577 U32 c = data [0];
578 U32 m = data [1];
579 U32 y = data [2];
580 U32 k = data [3];
581
582 if (0)
583 if (cinfo.Adobe_transform == 2)
584 {
585 c ^= 0xff;
586 m ^= 0xff;
587 y ^= 0xff;
588 k ^= 0xff;
589 }
590
591 data [0] = (c * k + 0x80) / 0xff;
592 data [1] = (m * k + 0x80) / 0xff;
593 data [2] = (y * k + 0x80) / 0xff;
594 data [3] = 0xff;
595
596 data += 4;
597 }
598 }
599
385 jpeg_finish_decompress (&cinfo); 600 jpeg_finish_decompress (&cinfo);
386 fclose (fp);
387 jpeg_destroy_decompress (&cinfo); 601 jpeg_destroy_decompress (&cinfo);
602 perlinterp_acquire ();
388} 603}
389 OUTPUT: 604 OUTPUT:
390 RETVAL 605 RETVAL
391 606
392void 607void
393compare (GdkPixbuf *a, GdkPixbuf *b) 608compare (GdkPixbuf *a, GdkPixbuf *b)
394 PPCODE: 609 PPCODE:
610 perlinterp_release ();
395{ 611{
396 int w = gdk_pixbuf_get_width (a); 612 int w = gdk_pixbuf_get_width (a);
397 int h = gdk_pixbuf_get_height (a); 613 int h = gdk_pixbuf_get_height (a);
614
398 int sa = gdk_pixbuf_get_rowstride (a); 615 int sa = gdk_pixbuf_get_rowstride (a);
399 int sb = gdk_pixbuf_get_rowstride (b); 616 int sb = gdk_pixbuf_get_rowstride (b);
400 617
401 guchar *pa = gdk_pixbuf_get_pixels (a); 618 guchar *pa = gdk_pixbuf_get_pixels (a);
402 guchar *pb = gdk_pixbuf_get_pixels (b); 619 guchar *pb = gdk_pixbuf_get_pixels (b);
… …
426 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 643 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
427 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 644 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
428 } 645 }
429 } 646 }
430 647
648 perlinterp_acquire ();
649
431 EXTEND (SP, 2); 650 EXTEND (SP, 2);
432 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); 651 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
433 PUSHs (sv_2mortal (newSVnv (peak / 255.))); 652 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
434} 653}
435 654
436############################################################################# 655#############################################################################
437 656
438MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 657MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
439 658
659# currently only works for filenames (octet strings)
660
440SV * 661SV *
441foldcase (SV *pathsv) 662foldcase (SV *pathsv)
442 PROTOTYPE: $ 663 PROTOTYPE: $
443 CODE: 664 CODE:
444{ 665{
445 STRLEN plen; 666 STRLEN plen;
446 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 667 U8 *path = (U8 *)SvPV (pathsv, plen);
447 U8 *pend = path + plen; 668 U8 *pend = path + plen;
448 U8 dst [plen * 6 * 3], *dstp = dst; 669 U8 dst [plen * 6 * 3], *dstp = dst;
449 670
450 while (path < pend) 671 while (path < pend)
451 { 672 {
452 U8 ch = *path; 673 U8 ch = *path;
453 674
454 if (ch >= 'a' && ch <= 'z') 675 if (ch >= 'a' && ch <= 'z')
455 *dstp++ = *path++; 676 *dstp++ = *path++;
677 else if (ch >= 'A' && ch <= 'Z')
678 *dstp++ = *path++ + ('a' - 'A');
456 else if (ch >= '0' && ch <= '9') 679 else if (ch >= '0' && ch <= '9')
457 { 680 {
458 STRLEN el, nl = 0; 681 STRLEN el, nl = 0;
459 while (*path >= '0' && *path <= '9' && path < pend) 682 while (*path >= '0' && *path <= '9' && path < pend)
460 path++, nl++; 683 path++, nl++;
… …
463 *dstp++ = '0'; 686 *dstp++ = '0';
464 687
465 memcpy (dstp, path - nl, nl); 688 memcpy (dstp, path - nl, nl);
466 dstp += nl; 689 dstp += nl;
467 } 690 }
691 else
692 *dstp++ = *path++;
693#if 0
468 else 694 else
469 { 695 {
470 STRLEN cl; 696 STRLEN cl;
471 to_utf8_fold (path, dstp, &cl); 697 to_utf8_fold (path, dstp, &cl);
472 dstp += cl; 698 dstp += cl;
473 path += is_utf8_char (path); 699 path += is_utf8_char (path);
474 } 700 }
701#endif
475 } 702 }
476 703
477 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 704 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
478} 705}
479 OUTPUT: 706 OUTPUT:
… …
648{ 875{
649 int i; 876 int i;
650 AV *av, *result; 877 AV *av, *result;
651 878
652 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 879 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
653 croak ("Not an array ref as first argument to make_histogram"); 880 croak ("Not an array ref as first argument to extract_features");
654 881
655 av = (AV *) SvRV (ar); 882 av = (AV *) SvRV (ar);
656 result = newAV (); 883 result = newAV ();
657 884
658 for (i = 0; i <= av_len (av); ++i) 885 for (i = 0; i <= av_len (av); ++i)
… …
721 RETVAL = newRV_noinc ((SV *)result); 948 RETVAL = newRV_noinc ((SV *)result);
722} 949}
723 OUTPUT: 950 OUTPUT:
724 RETVAL 951 RETVAL
725 952
726SV *
727make_histograms (SV *ar)
728 CODE:
729{
730 int i;
731 AV *av, *result;
732
733 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
734 croak ("Not an array ref as first argument to make_histogram");
735
736 av = (AV *) SvRV (ar);
737 result = newAV ();
738
739 for (i = 0; i <= av_len (av); ++i)
740 {
741 const int HISTSIZE = 64;
742
743 int j;
744 SV *sv = *av_fetch (av, i, 1);
745 STRLEN len;
746 char *buf = SvPVbyte (sv, len);
747
748 int tmphist[HISTSIZE];
749 float *hist;
750
751 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1);
752 SvPOK_on (histsv);
753 SvCUR_set (histsv, HISTSIZE * sizeof (float));
754 hist = (float *)SvPVX (histsv);
755
756 Zero (tmphist, sizeof (tmphist), char);
757
758 for (j = len; j--; )
759 {
760 unsigned int idx
761 = ((*buf & 0xc0) >> 2)
762 | ((*buf & 0x18) >> 1)
763 | (*buf & 0x03);
764
765 ++tmphist[idx];
766 ++buf;
767 }
768
769 for (j = 0; j < HISTSIZE; ++j)
770 hist[j] = (float)tmphist[j] / (len + 1e-30);
771
772 av_push (result, histsv);
773 }
774
775 RETVAL = newRV_noinc ((SV *)result);
776}
777 OUTPUT:
778 RETVAL
779
780

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