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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 1.56 by root, Wed Dec 27 17:48:16 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 }
… …
180 201
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/////////////////////////////////////////////////////////////////////////////
206// memory source for libjpeg
207
208static void cv_ms_init (j_decompress_ptr cinfo)
209{
210}
211
212static void cv_ms_term (j_decompress_ptr cinfo)
213{
214}
215
216static boolean cv_ms_fill (j_decompress_ptr cinfo)
217{
218 ERREXIT (cinfo, JERR_INPUT_EMPTY);
219
220 return TRUE;
221}
222
223static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
224{
225 if (num_bytes > 0)
226 {
227 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
228
229 src->next_input_byte += num_bytes;
230 src->bytes_in_buffer -= num_bytes;
231 }
232}
233
234static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
235{
236 struct jpeg_source_mgr *src;
237
238 if (!cinfo->src)
239 cinfo->src = (struct jpeg_source_mgr *)
240 (*cinfo->mem->alloc_small) (
241 (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
242 );
243
244 src = (struct jpeg_source_mgr *)cinfo->src;
245 src->init_source = cv_ms_init;
246 src->fill_input_buffer = cv_ms_fill;
247 src->skip_input_data = cv_ms_skip;
248 src->resync_to_restart = jpeg_resync_to_restart;
249 src->term_source = cv_ms_term;
250 src->next_input_byte = (JOCTET *)buf;
251 src->bytes_in_buffer = buflen;
252}
253
254/////////////////////////////////////////////////////////////////////////////
185 255
186MODULE = Gtk2::CV PACKAGE = Gtk2::CV 256MODULE = Gtk2::CV PACKAGE = Gtk2::CV
187 257
188PROTOTYPES: ENABLE 258PROTOTYPES: ENABLE
189 259
260# calculate the common prefix length of two strings
190# missing function in perl. really :) 261# missing function in perl. really :)
191int 262int
192common_prefix_length (a, b) 263common_prefix_length (a, b)
193 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 264 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
194 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 265 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
… …
203 274
204 OUTPUT: 275 OUTPUT:
205 RETVAL 276 RETVAL
206 277
207const char * 278const char *
208magic (const char *path) 279magic (SV *path_or_data)
280 ALIAS:
281 magic = 0
282 magic_mime = 1
283 magic_buffer = 2
284 magic_buffer_mime = 3
209 CODE: 285 CODE:
210{ 286{
211 static magic_t cookie; 287 STRLEN len;
288 char *data = SvPVbyte (path_or_data, len);
212 289
213 if (!cookie) 290 if (!magic_cookie[0])
291 {
292 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
293 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
294 magic_load (magic_cookie[0], 0);
295 magic_load (magic_cookie[1], 0);
214 { 296 }
215 cookie = magic_open (MAGIC_NONE);
216 297
217 if (cookie) 298 perlinterp_release ();
218 magic_load (cookie, 0);
219 else
220 XSRETURN_UNDEF;
221 }
222 299
223 RETVAL = magic_file (cookie, path); 300 RETVAL = ix & 2
301 ? magic_buffer (magic_cookie[ix & 1], data, len)
302 : magic_file (magic_cookie[ix & 1], data);
303
304 perlinterp_acquire ();
224} 305}
225 OUTPUT: 306 OUTPUT:
226 RETVAL 307 RETVAL
227 308
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 309# missing/broken in Gtk2 perl module
310
311void
312gdk_window_clear_hints (GdkWindow *window)
313 CODE:
314 gdk_window_set_geometry_hints (window, 0, 0);
250 315
251gboolean 316gboolean
252gdk_net_wm_supports (GdkAtom property) 317gdk_net_wm_supports (GdkAtom property)
253 CODE: 318 CODE:
254#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 319#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
260 RETVAL 325 RETVAL
261 326
262GdkPixbuf_noinc * 327GdkPixbuf_noinc *
263dealpha_expose (GdkPixbuf *pb) 328dealpha_expose (GdkPixbuf *pb)
264 CODE: 329 CODE:
330 perlinterp_release ();
265{ 331{
266 int w = gdk_pixbuf_get_width (pb); 332 int w = gdk_pixbuf_get_width (pb);
267 int h = gdk_pixbuf_get_height (pb); 333 int h = gdk_pixbuf_get_height (pb);
268 int bpp = gdk_pixbuf_get_n_channels (pb); 334 int bpp = gdk_pixbuf_get_n_channels (pb);
269 int x, y, i; 335 int x, y, i;
… …
278 for (x = 0; x < w; x++) 344 for (x = 0; x < w; x++)
279 for (y = 0; y < h; y++) 345 for (y = 0; y < h; y++)
280 for (i = 0; i < 3; i++) 346 for (i = 0; i < 3; i++)
281 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 347 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
282} 348}
349 perlinterp_acquire ();
283 OUTPUT: 350 OUTPUT:
284 RETVAL 351 RETVAL
285 352
286GdkPixbuf_noinc * 353GdkPixbuf_noinc *
287rotate (GdkPixbuf *pb, int angle) 354rotate (GdkPixbuf *pb, int angle)
288 CODE: 355 CODE:
356 perlinterp_release ();
357 if (angle < 0)
358 angle += 360;
289 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 359 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
290 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 360 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
291 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 361 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
292 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 362 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
293 : angle); 363 : angle);
364 perlinterp_acquire ();
294 OUTPUT: 365 OUTPUT:
295 RETVAL 366 RETVAL
296 367
368const char *
369filetype (SV *image_data)
370 CODE:
371{
372 STRLEN data_len;
373 U8 *data = SvPVbyte (image_data, data_len);
374
375 if (data_len >= 20
376 && data[0] == 0xff
377 && data[1] == 0xd8
378 && data[2] == 0xff)
379 RETVAL = "jpg";
380 else if (data_len >= 12
381 && data[ 0] == (U8)'R'
382 && data[ 1] == (U8)'I'
383 && data[ 2] == (U8)'F'
384 && data[ 3] == (U8)'F'
385 && data[ 8] == (U8)'W'
386 && data[ 9] == (U8)'E'
387 && data[10] == (U8)'B'
388 && data[11] == (U8)'P')
389 RETVAL = "webp";
390 else if (data_len >= 16
391 && data[ 0] == 0x89
392 && data[ 1] == (U8)'P'
393 && data[ 2] == (U8)'N'
394 && data[ 3] == (U8)'G'
395 && data[ 4] == 0x0d
396 && data[ 5] == 0x0a
397 && data[ 6] == 0x1a
398 && data[ 7] == 0x0a)
399 RETVAL = "png";
400 else
401 RETVAL = "other";
402}
403 OUTPUT:
404 RETVAL
405
297GdkPixbuf_noinc * 406GdkPixbuf_noinc *
298load_jpeg (SV *path, int thumbnail=0) 407decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
408 CODE:
409{
410#if WEBP
411 STRLEN data_size;
412 int alpha;
413 WebPData data;
414 WebPDemuxer *demux;
415 WebPIterator iter;
416 WebPDecoderConfig config;
417 int inw, inh;
418
419 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
420 data.size = data_size;
421
422 perlinterp_release ();
423
424 RETVAL = 0;
425
426 if (!(demux = WebPDemux (&data)))
427 goto err_demux;
428
429 if (!WebPDemuxGetFrame (demux, 1, &iter))
430 goto err_iter;
431
432 if (!WebPInitDecoderConfig (&config))
433 goto err_iter;
434
435 config.options.use_threads = 1;
436
437 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
438 goto err_iter;
439
440 inw = config.input.width;
441 inh = config.input.height;
442
443 if (thumbnail)
444 {
445 if (inw * ih > inh * iw)
446 ih = (iw * inh + inw - 1) / inw;
447 else
448 iw = (ih * inw + inh - 1) / inh;
449
450 config.options.bypass_filtering = 1;
451 config.options.no_fancy_upsampling = 1;
452
453 config.options.use_scaling = 1;
454 config.options.scaled_width = iw;
455 config.options.scaled_height = ih;
456 }
457 else
458 {
459 iw = inw;
460 ih = inh;
461 }
462
463 alpha = !!config.input.has_alpha;
464
465 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
466 if (!RETVAL)
467 goto err_iter;
468
469 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
470 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
471 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
472 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
473 config.output.is_external_memory = 1;
474
475 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
476 {
477 g_object_unref (RETVAL);
478 RETVAL = 0;
479 goto err_iter;
480 }
481
482 err_iter:
483 WebPDemuxReleaseIterator (&iter);
484 err_demux:
485 WebPDemuxDelete (demux);
486
487 perlinterp_acquire ();
488#else
489 croak ("load_webp: webp not enabled at compile time");
490#endif
491}
492 OUTPUT:
493 RETVAL
494
495GdkPixbuf_noinc *
496decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
299 CODE: 497 CODE:
300{ 498{
301 struct jpeg_decompress_struct cinfo; 499 struct jpeg_decompress_struct cinfo;
302 struct jpg_err_mgr jerr; 500 struct jpg_err_mgr jerr;
303 guchar *data;
304 int rs; 501 int rs;
305 FILE *fp;
306 volatile GdkPixbuf *pb = 0; 502 volatile GdkPixbuf *pb = 0;
503 STRLEN data_len;
504 guchar *data = SvPVbyte (image_data, data_len);
307 505
308 RETVAL = 0; 506 RETVAL = 0;
309 507
310 fp = fopen (SvPVbyte_nolen (path), "rb"); 508 perlinterp_release ();
311
312 if (!fp)
313 XSRETURN_UNDEF;
314 509
315 cinfo.err = jpeg_std_error (&jerr.err); 510 cinfo.err = jpeg_std_error (&jerr.err);
316 511
317 jerr.err.error_exit = cv_error_exit; 512 jerr.err.error_exit = cv_error_exit;
318 jerr.err.output_message = cv_error_output; 513 jerr.err.output_message = cv_error_output;
319 514
320 if ((rs = setjmp (jerr.setjmp_buffer))) 515 if ((rs = setjmp (jerr.setjmp_buffer)))
321 { 516 {
322 fclose (fp);
323 jpeg_destroy_decompress (&cinfo); 517 jpeg_destroy_decompress (&cinfo);
324 518
325 if (pb) 519 if (pb)
326 g_object_unref ((gpointer)pb); 520 g_object_unref ((gpointer)pb);
327 521
522 perlinterp_acquire ();
328 XSRETURN_UNDEF; 523 XSRETURN_UNDEF;
329 } 524 }
330 525
331 jpeg_create_decompress (&cinfo); 526 jpeg_create_decompress (&cinfo);
527 cv_jpeg_mem_src (&cinfo, data, data_len);
332 528
333 jpeg_stdio_src (&cinfo, fp);
334 jpeg_read_header (&cinfo, TRUE); 529 jpeg_read_header (&cinfo, TRUE);
335 530
336 cinfo.dct_method = JDCT_DEFAULT; 531 cinfo.dct_method = JDCT_DEFAULT;
337 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 532 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
338 cinfo.do_block_smoothing = FALSE; 533 cinfo.do_block_smoothing = FALSE;
… …
348 { 543 {
349 cinfo.dct_method = JDCT_FASTEST; 544 cinfo.dct_method = JDCT_FASTEST;
350 cinfo.do_fancy_upsampling = FALSE; 545 cinfo.do_fancy_upsampling = FALSE;
351 546
352 while (cinfo.scale_denom < 8 547 while (cinfo.scale_denom < 8
353 && cinfo.output_width >= IW*4 548 && cinfo.output_width >= iw*4
354 && cinfo.output_height >= IH*4) 549 && cinfo.output_height >= ih*4)
355 { 550 {
356 cinfo.scale_denom <<= 1; 551 cinfo.scale_denom <<= 1;
357 jpeg_calc_output_dimensions (&cinfo); 552 jpeg_calc_output_dimensions (&cinfo);
358 } 553 }
359 } 554 }
360 555
556 if (cinfo.output_components != 3)
557 longjmp (jerr.setjmp_buffer, 3);
558
559 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
560 {
561 cinfo.out_color_space = JCS_CMYK;
562 cinfo.output_components = 4;
563 }
564
361 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 565 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
362 if (!RETVAL) 566 if (!RETVAL)
363 longjmp (jerr.setjmp_buffer, 2); 567 longjmp (jerr.setjmp_buffer, 2);
364 568
365 data = gdk_pixbuf_get_pixels (RETVAL); 569 data = gdk_pixbuf_get_pixels (RETVAL);
366 rs = gdk_pixbuf_get_rowstride (RETVAL); 570 rs = gdk_pixbuf_get_rowstride (RETVAL);
367
368 if (cinfo.output_components != 3)
369 longjmp (jerr.setjmp_buffer, 3);
370 571
371 jpeg_start_decompress (&cinfo); 572 jpeg_start_decompress (&cinfo);
372 573
373 while (cinfo.output_scanline < cinfo.output_height) 574 while (cinfo.output_scanline < cinfo.output_height)
374 { 575 {
… …
381 rp [3] = (guchar *)rp [2] + rs; 582 rp [3] = (guchar *)rp [2] + rs;
382 583
383 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 584 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
384 } 585 }
385 586
587 if (cinfo.out_color_space == JCS_CMYK)
588 {
589 guchar *end = data + cinfo.output_height * rs;
590
591 while (data < end)
592 {
593 U32 c = data [0];
594 U32 m = data [1];
595 U32 y = data [2];
596 U32 k = data [3];
597
598 if (0)
599 if (cinfo.Adobe_transform == 2)
600 {
601 c ^= 0xff;
602 m ^= 0xff;
603 y ^= 0xff;
604 k ^= 0xff;
605 }
606
607 data [0] = (c * k + 0x80) / 0xff;
608 data [1] = (m * k + 0x80) / 0xff;
609 data [2] = (y * k + 0x80) / 0xff;
610 data [3] = 0xff;
611
612 data += 4;
613 }
614 }
615
386 jpeg_finish_decompress (&cinfo); 616 jpeg_finish_decompress (&cinfo);
387 fclose (fp);
388 jpeg_destroy_decompress (&cinfo); 617 jpeg_destroy_decompress (&cinfo);
618 perlinterp_acquire ();
389} 619}
390 OUTPUT: 620 OUTPUT:
391 RETVAL 621 RETVAL
392 622
393void 623void
394compare (GdkPixbuf *a, GdkPixbuf *b) 624compare (GdkPixbuf *a, GdkPixbuf *b)
395 PPCODE: 625 PPCODE:
626 perlinterp_release ();
396{ 627{
397 int w = gdk_pixbuf_get_width (a); 628 int w = gdk_pixbuf_get_width (a);
398 int h = gdk_pixbuf_get_height (a); 629 int h = gdk_pixbuf_get_height (a);
630
399 int sa = gdk_pixbuf_get_rowstride (a); 631 int sa = gdk_pixbuf_get_rowstride (a);
400 int sb = gdk_pixbuf_get_rowstride (b); 632 int sb = gdk_pixbuf_get_rowstride (b);
401 633
402 guchar *pa = gdk_pixbuf_get_pixels (a); 634 guchar *pa = gdk_pixbuf_get_pixels (a);
403 guchar *pb = gdk_pixbuf_get_pixels (b); 635 guchar *pb = gdk_pixbuf_get_pixels (b);
… …
427 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 659 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)); 660 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
429 } 661 }
430 } 662 }
431 663
664 perlinterp_acquire ();
665
432 EXTEND (SP, 2); 666 EXTEND (SP, 2);
433 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); 667 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
434 PUSHs (sv_2mortal (newSVnv (peak / 255.))); 668 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
435} 669}
436 670
437############################################################################# 671#############################################################################
438 672
439MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 673MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
440 674
675# currently only works for filenames (octet strings)
676
441SV * 677SV *
442foldcase (SV *pathsv) 678foldcase (SV *pathsv)
443 PROTOTYPE: $ 679 PROTOTYPE: $
444 CODE: 680 CODE:
445{ 681{
446 STRLEN plen; 682 STRLEN plen;
447 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 683 U8 *path = (U8 *)SvPV (pathsv, plen);
448 U8 *pend = path + plen; 684 U8 *pend = path + plen;
449 U8 dst [plen * 6 * 3], *dstp = dst; 685 U8 dst [plen * 6 * 3], *dstp = dst;
450 686
451 while (path < pend) 687 while (path < pend)
452 { 688 {
453 U8 ch = *path; 689 U8 ch = *path;
454 690
455 if (ch >= 'a' && ch <= 'z') 691 if (ch >= 'a' && ch <= 'z')
456 *dstp++ = *path++; 692 *dstp++ = *path++;
693 else if (ch >= 'A' && ch <= 'Z')
694 *dstp++ = *path++ + ('a' - 'A');
457 else if (ch >= '0' && ch <= '9') 695 else if (ch >= '0' && ch <= '9')
458 { 696 {
459 STRLEN el, nl = 0; 697 STRLEN el, nl = 0;
460 while (*path >= '0' && *path <= '9' && path < pend) 698 while (*path >= '0' && *path <= '9' && path < pend)
461 path++, nl++; 699 path++, nl++;
… …
464 *dstp++ = '0'; 702 *dstp++ = '0';
465 703
466 memcpy (dstp, path - nl, nl); 704 memcpy (dstp, path - nl, nl);
467 dstp += nl; 705 dstp += nl;
468 } 706 }
707 else
708 *dstp++ = *path++;
709#if 0
469 else 710 else
470 { 711 {
471 STRLEN cl; 712 STRLEN cl;
472 to_utf8_fold (path, dstp, &cl); 713 to_utf8_fold (path, dstp, &cl);
473 dstp += cl; 714 dstp += cl;
474 path += is_utf8_char (path); 715 path += is_utf8_char (path);
475 } 716 }
717#endif
476 } 718 }
477 719
478 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 720 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
479} 721}
480 OUTPUT: 722 OUTPUT:
… …
649{ 891{
650 int i; 892 int i;
651 AV *av, *result; 893 AV *av, *result;
652 894
653 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 895 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
654 croak ("Not an array ref as first argument to make_histogram"); 896 croak ("Not an array ref as first argument to extract_features");
655 897
656 av = (AV *) SvRV (ar); 898 av = (AV *) SvRV (ar);
657 result = newAV (); 899 result = newAV ();
658 900
659 for (i = 0; i <= av_len (av); ++i) 901 for (i = 0; i <= av_len (av); ++i)
… …
712 feature_finish_pass_2 (&f_v); 954 feature_finish_pass_2 (&f_v);
713 } 955 }
714 956
715 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; 957 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 ; 958 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 ; 959 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
718 960
719 av_push (result, histsv); 961 av_push (result, histsv);
720 } 962 }
721 963
722 RETVAL = newRV_noinc ((SV *)result); 964 RETVAL = newRV_noinc ((SV *)result);
723} 965}
724 OUTPUT: 966 OUTPUT:
725 RETVAL 967 RETVAL
726 968
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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