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Comparing CV/CV.xs (file contents):
Revision 1.37 by root, Thu Jun 22 22:01:26 2006 UTC vs.
Revision 1.70 by root, Thu Jun 8 15:42:03 2023 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#if JXL
30#include <jxl/decode.h>
31#include "jxl/thread_parallel_runner.h"
32#endif
33
34#include "perlmulticore.h"
35
19#define IW 80 /* MUST match Schnauzer.pm! */ 36#define IW 80 /* MUST match Schnauzer.pm! */
20#define IH 60 /* MUST match Schnauzer.pm! */ 37#define IH 60 /* MUST match Schnauzer.pm! */
21 38
22#define RAND (seed = (seed + 7141) * 54773 % 134456)
23
24#define LINELENGTH 240 39#define LINELENGTH 240
25 40
26#define ELLIPSIS "\xe2\x80\xa6" 41#define ELLIPSIS "\xe2\x80\xa6"
42
43typedef char *octet_string;
44
45static magic_t magic_cookie[2]; /* !mime, mime */
27 46
28struct jpg_err_mgr 47struct jpg_err_mgr
29{ 48{
30 struct jpeg_error_mgr err; 49 struct jpeg_error_mgr err;
31 jmp_buf setjmp_buffer; 50 jmp_buf setjmp_buffer;
32}; 51};
33 52
34static void 53static void
35cv_error_exit (j_common_ptr cinfo) 54cv_error_exit (j_common_ptr cinfo)
36{ 55{
56 cinfo->err->output_message (cinfo);
37 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); 57 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
38} 58}
39 59
40static void 60static void
41cv_error_output (j_common_ptr cinfo) 61cv_error_output (j_common_ptr cinfo)
42{ 62{
63 char msg[JMSG_LENGTH_MAX];
64
65 cinfo->err->format_message (cinfo, msg);
66
67 fprintf (stderr, "JPEG decoding error: %s\n", msg);
43 return; 68 return;
44} 69}
45 70
46static void 71static void
47rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, 72rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
… …
144 if (!--a85_cnt) 169 if (!--a85_cnt)
145 { 170 {
146 a85_cnt = 4; 171 a85_cnt = 4;
147 if (a85_val) 172 if (a85_val)
148 { 173 {
149 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; 174 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
150 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; 175 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
151 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; 176 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
152 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; 177 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
153 a85_ptr[0] = (a85_val ) + 33; 178 a85_ptr[0] = (a85_val ) + 33;
154 179
155 a85_ptr += 5; 180 a85_ptr += 5;
156 } 181 }
… …
179 204
180 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 205 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
181} 206}
182 207
183///////////////////////////////////////////////////////////////////////////// 208/////////////////////////////////////////////////////////////////////////////
209// memory source for libjpeg
210
211static void cv_ms_init (j_decompress_ptr cinfo)
212{
213}
214
215static void cv_ms_term (j_decompress_ptr cinfo)
216{
217}
218
219static boolean cv_ms_fill (j_decompress_ptr cinfo)
220{
221 // unexpected EOF, warn and generate fake EOI marker
222
223 WARNMS (cinfo, JWRN_JPEG_EOF);
224
225 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
226
227 static const JOCTET eoi[] = { 0xFF, JPEG_EOI };
228
229 src->next_input_byte = eoi;
230 src->bytes_in_buffer = sizeof (eoi);
231
232 return TRUE;
233}
234
235static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
236{
237 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
238
239 src->next_input_byte += num_bytes;
240 src->bytes_in_buffer -= num_bytes;
241}
242
243static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
244{
245 struct jpeg_source_mgr *src;
246
247 if (!cinfo->src)
248 cinfo->src = (struct jpeg_source_mgr *)
249 (*cinfo->mem->alloc_small) (
250 (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
251 );
252
253 src = (struct jpeg_source_mgr *)cinfo->src;
254 src->init_source = cv_ms_init;
255 src->fill_input_buffer = cv_ms_fill;
256 src->skip_input_data = cv_ms_skip;
257 src->resync_to_restart = jpeg_resync_to_restart;
258 src->term_source = cv_ms_term;
259 src->next_input_byte = (JOCTET *)buf;
260 src->bytes_in_buffer = buflen;
261}
262
263/////////////////////////////////////////////////////////////////////////////
264
265/* great, the jpeg-xl reference implementaton requires us to parse bmff files */
266
267struct bmff_box
268{
269 char type[4];
270 const uint8_t *ptr;
271 size_t size;
272};
273
274static int
275bmff_parse_box (struct bmff_box *box, const uint8_t **next_in, size_t *avail_in)
276{
277 if (*avail_in < 8)
278 return 0;
279
280 box->size = ((*next_in)[0] << 24)
281 | ((*next_in)[1] << 16)
282 | ((*next_in)[2] << 8)
283 | ((*next_in)[3] );
284
285 if (box->size < 8)
286 return 0;
287
288 if (*avail_in < box->size)
289 return 0;
290
291 memcpy (box->type, *next_in + 4, 4);
292 box->ptr = *next_in + 8;
293
294 *next_in += box->size;
295 *avail_in -= box->size;
296
297 box->size -= 8;
298
299 return 1;
300}
301
302/////////////////////////////////////////////////////////////////////////////
184 303
185MODULE = Gtk2::CV PACKAGE = Gtk2::CV 304MODULE = Gtk2::CV PACKAGE = Gtk2::CV
186 305
187PROTOTYPES: ENABLE 306PROTOTYPES: ENABLE
188 307
308void
309_exit (int code)
310
311# calculate the common prefix length of two strings
189# missing function in perl. really :) 312# missing function in perl. really :)
190int 313int
191common_prefix_length (a, b) 314common_prefix_length (a, b)
192 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 315 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
193 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 316 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
… …
201 } 324 }
202 325
203 OUTPUT: 326 OUTPUT:
204 RETVAL 327 RETVAL
205 328
329int
330common_prefix_length_byte (a, b)
331 unsigned char *a = (unsigned char *)SvPVbyte_nolen ($arg);
332 unsigned char *b = (unsigned char *)SvPVbyte_nolen ($arg);
333 CODE:
334 RETVAL = 0;
335 while (*a == *b && *a)
336 a++, b++, RETVAL++;
337 OUTPUT:
338 RETVAL
339
206const char * 340const char *
207magic (const char *path) 341magic (SV *path_or_data)
342 ALIAS:
343 magic = 0
344 magic_mime = 1
345 magic_buffer = 2
346 magic_buffer_mime = 3
208 CODE: 347 CODE:
209{ 348{
210 static magic_t cookie; 349 STRLEN len;
350 char *data = SvPVbyte (path_or_data, len);
211 351
212 if (!cookie) 352 if (!magic_cookie[0])
353 {
354 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
355 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
356 magic_load (magic_cookie[0], 0);
357 magic_load (magic_cookie[1], 0);
213 { 358 }
214 cookie = magic_open (MAGIC_NONE);
215 359
216 if (cookie) 360 perlinterp_release ();
217 magic_load (cookie, 0);
218 else
219 XSRETURN_UNDEF;
220 }
221 361
222 RETVAL = magic_file (cookie, path); 362 RETVAL = ix & 2
363 ? magic_buffer (magic_cookie[ix & 1], data, len)
364 : magic_file (magic_cookie[ix & 1], data);
365
366 perlinterp_acquire ();
223} 367}
224 OUTPUT: 368 OUTPUT:
225 RETVAL 369 RETVAL
226 370
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 371# missing/broken in Gtk2 perl module
372
373void
374gdk_window_clear_hints (GdkWindow *window)
375 CODE:
376 gdk_window_set_geometry_hints (window, 0, 0);
249 377
250gboolean 378gboolean
251gdk_net_wm_supports (GdkAtom property) 379gdk_net_wm_supports (GdkAtom property)
252 CODE: 380 CODE:
253#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 381#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
259 RETVAL 387 RETVAL
260 388
261GdkPixbuf_noinc * 389GdkPixbuf_noinc *
262dealpha_expose (GdkPixbuf *pb) 390dealpha_expose (GdkPixbuf *pb)
263 CODE: 391 CODE:
392 perlinterp_release ();
264{ 393{
265 int w = gdk_pixbuf_get_width (pb); 394 int w = gdk_pixbuf_get_width (pb);
266 int h = gdk_pixbuf_get_height (pb); 395 int h = gdk_pixbuf_get_height (pb);
267 int bpp = gdk_pixbuf_get_n_channels (pb); 396 int bpp = gdk_pixbuf_get_n_channels (pb);
268 int x, y, i; 397 int x, y, i;
… …
277 for (x = 0; x < w; x++) 406 for (x = 0; x < w; x++)
278 for (y = 0; y < h; y++) 407 for (y = 0; y < h; y++)
279 for (i = 0; i < 3; i++) 408 for (i = 0; i < 3; i++)
280 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 409 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
281} 410}
411 perlinterp_acquire ();
282 OUTPUT: 412 OUTPUT:
283 RETVAL 413 RETVAL
284 414
285GdkPixbuf_noinc * 415GdkPixbuf_noinc *
286rotate (GdkPixbuf *pb, int angle) 416rotate (GdkPixbuf *pb, int angle)
287 CODE: 417 CODE:
418 perlinterp_release ();
419 if (angle < 0)
420 angle += 360;
288 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 421 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
289 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 422 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
290 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 423 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
291 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 424 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
292 : angle); 425 : angle);
426 perlinterp_acquire ();
293 OUTPUT: 427 OUTPUT:
294 RETVAL 428 RETVAL
295 429
430const char *
431filetype (SV *image_data)
432 CODE:
433{
434 STRLEN data_len;
435 U8 *data = SvPVbyte (image_data, data_len);
436 static const unsigned char jxl_header[] = {
437 0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a
438 };
439
440 if (data_len >= 20
441 && data[0] == 0xff
442 && data[1] == 0xd8
443 && data[2] == 0xff)
444 RETVAL = "image/jpeg";
445 else if (data_len >= 12
446 && data[ 0] == (U8)'R'
447 && data[ 1] == (U8)'I'
448 && data[ 2] == (U8)'F'
449 && data[ 3] == (U8)'F'
450 && data[ 8] == (U8)'W'
451 && data[ 9] == (U8)'E'
452 && data[10] == (U8)'B'
453 && data[11] == (U8)'P')
454 RETVAL = "image/webp";
455 else if (data_len >= 16
456 && data[ 0] == 0x89
457 && data[ 1] == (U8)'P'
458 && data[ 2] == (U8)'N'
459 && data[ 3] == (U8)'G'
460 && data[ 4] == 0x0d
461 && data[ 5] == 0x0a
462 && data[ 6] == 0x1a
463 && data[ 7] == 0x0a)
464 RETVAL = "image/png";
465 else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0)
466 RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck
467 else if (data_len >= 2
468 && data[0] == 0xff
469 && data[1] == 0x0a)
470 RETVAL = "image/jxl";
471 else if (data_len >= 13
472 && data[0] == 'G'
473 && data[1] == 'I'
474 && data[2] == 'F'
475 && data[3] == '8'
476 //&& (data[4] == '7' || data[4] == '9')
477 && data[5] == 'a')
478 {
479 RETVAL = "image/gif";
480
481 // now see if its animated - we require the netscape application header for this
482 int ofs = 13;
483
484 if (data[10] & 0x80)
485 ofs += (1 << ((data[10] & 7) + 1)) * 3;
486
487 if (data_len >= ofs + 2 + 1 + 11)
488 {
489
490 // skip a graphic control extension block. we assume
491 // there is at most one such block - while the NAB
492 // has to come firstz, some files do not obey this
493 if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
494 ofs += 3 + data[ofs + 2] + 1;
495
496 if (data_len >= ofs + 2 + 1 + 11)
497 if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
498 RETVAL = "video/gif";
499 }
500 }
501 else if (data_len >= 0x8000 + 6
502 && data[0x8000+1] == (U8)'B'
503 && data[0x8000+2] == (U8)'E'
504 && data[0x8000+3] == (U8)'A'
505 && data[0x8000+4] == (U8)'0'
506 && data[0x8000+5] == (U8)'1')
507 RETVAL = "video/iso-bluray";
508 else if (data_len >= 0x8000 + 6
509 && data[0x8000+1] == (U8)'C'
510 && data[0x8000+2] == (U8)'D'
511 && data[0x8000+3] == (U8)'0'
512 && data[0x8000+4] == (U8)'0'
513 && data[0x8000+5] == (U8)'1')
514 RETVAL = "video/iso9660";
515
516 else
517 XSRETURN_UNDEF;
518}
519 OUTPUT:
520 RETVAL
521
296GdkPixbuf_noinc * 522GdkPixbuf_noinc *
297load_jpeg (SV *path, int thumbnail=0) 523decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
524 CODE:
525{
526#if WEBP
527 STRLEN data_size;
528 int alpha;
529 WebPData data;
530 WebPDemuxer *demux;
531 WebPIterator iter;
532 WebPDecoderConfig config;
533 int inw, inh;
534
535 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
536 data.size = data_size;
537
538 perlinterp_release ();
539
540 RETVAL = 0;
541
542 if (!(demux = WebPDemux (&data)))
543 goto err_demux;
544
545 if (!WebPDemuxGetFrame (demux, 1, &iter))
546 goto err_iter;
547
548 if (!WebPInitDecoderConfig (&config))
549 goto err_iter;
550
551 config.options.use_threads = 1;
552
553 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
554 goto err_iter;
555
556 inw = config.input.width;
557 inh = config.input.height;
558
559 if (thumbnail)
560 {
561 if (inw * ih > inh * iw)
562 ih = (iw * inh + inw - 1) / inw;
563 else
564 iw = (ih * inw + inh - 1) / inh;
565
566 config.options.bypass_filtering = 1;
567 config.options.no_fancy_upsampling = 1;
568
569 config.options.use_scaling = 1;
570 config.options.scaled_width = iw;
571 config.options.scaled_height = ih;
572 }
573 else
574 {
575 iw = inw;
576 ih = inh;
577 }
578
579 alpha = !!config.input.has_alpha;
580
581 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
582 if (!RETVAL)
583 goto err_iter;
584
585 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
586 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
587 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
588 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
589 config.output.is_external_memory = 1;
590
591 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
592 {
593 g_object_unref (RETVAL);
594 RETVAL = 0;
595 goto err_iter;
596 }
597
598 err_iter:
599 WebPDemuxReleaseIterator (&iter);
600 err_demux:
601 WebPDemuxDelete (demux);
602
603 perlinterp_acquire ();
604#else
605 croak ("load_webp: webp not enabled at compile time");
606#endif
607}
608 OUTPUT:
609 RETVAL
610
611GdkPixbuf_noinc *
612decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
613 CODE:
614{
615#if JXL
616 JxlDecoder *dec;
617 JxlBasicInfo info;
618 const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data);
619 size_t avail_in = SvCUR (image_data);
620 const char *error = 0;
621 JxlDecoderStatus status;
622 static void *runner_cache;
623 void *runner = 0;
624
625 RETVAL = 0;
626
627 if (runner_cache)
628 runner = runner_cache;
629 else
630 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
631
632 runner_cache = 0;
633
634 perlinterp_release ();
635
636 dec = JxlDecoderCreate (0);
637
638 error = "JxlDecoderCreate failed";
639 if (!dec)
640 goto done;
641
642 status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
643 error = "JxlDecoderSetParallelRunner failed";
644 if (status != JXL_DEC_SUCCESS)
645 goto done;
646
647 error = "JxlDecoderSubscribeEvents failed";
648 status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE);
649 if (status != JXL_DEC_SUCCESS)
650 goto done;
651
652 status = JxlDecoderSetInput (dec, next_in, avail_in);
653 error = "JxlDecoderSetInput failed";
654 if (status != JXL_DEC_SUCCESS)
655 goto done;
656
657 for (;;)
658 {
659 status = JxlDecoderProcessInput (dec);
660
661 switch (status)
662 {
663 case JXL_DEC_FULL_IMAGE:
664 error = 0;
665 goto done;
666
667 case JXL_DEC_ERROR:
668 error = "JxlDecoderProcessInput failed";
669 goto done;
670
671 case JXL_DEC_NEED_MORE_INPUT:
672 error = "incomplete file";
673 goto done;
674
675 case JXL_DEC_SUCCESS:
676 error = "incomplete decode";
677 goto done;
678
679 case JXL_DEC_BASIC_INFO:
680 {
681 status = JxlDecoderGetBasicInfo (dec, &info);
682 error = "JxlDecoderGetBasicInfo failed";
683 if (status != JXL_DEC_SUCCESS)
684 goto done;
685
686 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
687 error = "unable to allocate pixbuf";
688 if (!RETVAL)
689 goto done;
690
691 JxlPixelFormat format = {
692 info.alpha_bits ? 4 : 3,
693 JXL_TYPE_UINT8,
694 JXL_NATIVE_ENDIAN,
695 gdk_pixbuf_get_rowstride (RETVAL)
696 };
697
698 // cannot use gdk_pixbuf_get_byte_length because that does
699 // not return the size of the buffer, but the size of the buffer without
700 // the last padding bytes. the internal buffer is rowstride * ysize,
701 // and this is what the jxl decoder needs. none of this is documented
702 // in either library, of course.
703
704 status = JxlDecoderSetImageOutBuffer (
705 dec,
706 &format,
707 gdk_pixbuf_get_pixels (RETVAL),
708 gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
709 );
710 error = "JxlDecoderSetImageOutBuffer failed";
711 if (status != JXL_DEC_SUCCESS)
712 goto done;
713 }
714 break;
715
716 default:
717 error = "unexpected event";
718 goto done;
719 }
720 }
721
722 done:
723 if (dec)
724 JxlDecoderDestroy (dec);
725
726 perlinterp_acquire ();
727
728 if (runner_cache)
729 JxlThreadParallelRunnerDestroy (runner);
730
731 runner_cache = runner;
732
733 if (error)
734 {
735 if (RETVAL)
736 g_object_unref (RETVAL);
737
738 croak ("load_jxl: %s (status %d)", error, status);
739 }
740#else
741 croak ("load_jxl: jpeg-xl not enabled at compile time");
742#endif
743}
744 OUTPUT:
745 RETVAL
746
747GdkPixbuf_noinc *
748decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
298 CODE: 749 CODE:
299{ 750{
300 struct jpeg_decompress_struct cinfo; 751 struct jpeg_decompress_struct cinfo;
301 struct jpg_err_mgr jerr; 752 struct jpg_err_mgr jerr;
302 guchar *data;
303 int rs; 753 int rs;
304 FILE *fp;
305 volatile GdkPixbuf *pb = 0; 754 volatile GdkPixbuf *pb = 0;
755 STRLEN data_len;
756 guchar *data = SvPVbyte (image_data, data_len);
306 757
307 RETVAL = 0; 758 RETVAL = 0;
308 759
309 fp = fopen (SvPVbyte_nolen (path), "rb"); 760 perlinterp_release ();
310
311 if (!fp)
312 XSRETURN_UNDEF;
313 761
314 cinfo.err = jpeg_std_error (&jerr.err); 762 cinfo.err = jpeg_std_error (&jerr.err);
315 763
316 jerr.err.error_exit = cv_error_exit; 764 jerr.err.error_exit = cv_error_exit;
317 jerr.err.output_message = cv_error_output; 765 jerr.err.output_message = cv_error_output;
318 766
319 if ((rs = setjmp (jerr.setjmp_buffer))) 767 if ((rs = setjmp (jerr.setjmp_buffer)))
320 { 768 {
321 fclose (fp);
322 jpeg_destroy_decompress (&cinfo); 769 jpeg_destroy_decompress (&cinfo);
323 770
324 if (pb) 771 if (pb)
325 g_object_unref ((gpointer)pb); 772 g_object_unref ((gpointer)pb);
326 773
774 perlinterp_acquire ();
327 XSRETURN_UNDEF; 775 XSRETURN_UNDEF;
328 } 776 }
329 777
778 if (!data_len)
779 longjmp (jerr.setjmp_buffer, 4);
780
330 jpeg_create_decompress (&cinfo); 781 jpeg_create_decompress (&cinfo);
782 cv_jpeg_mem_src (&cinfo, data, data_len);
331 783
332 jpeg_stdio_src (&cinfo, fp);
333 jpeg_read_header (&cinfo, TRUE); 784 jpeg_read_header (&cinfo, TRUE);
334 785
335 cinfo.dct_method = JDCT_DEFAULT; 786 cinfo.dct_method = JDCT_DEFAULT;
336 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 787 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
337 cinfo.do_block_smoothing = FALSE; 788 cinfo.do_block_smoothing = FALSE;
… …
347 { 798 {
348 cinfo.dct_method = JDCT_FASTEST; 799 cinfo.dct_method = JDCT_FASTEST;
349 cinfo.do_fancy_upsampling = FALSE; 800 cinfo.do_fancy_upsampling = FALSE;
350 801
351 while (cinfo.scale_denom < 8 802 while (cinfo.scale_denom < 8
352 && cinfo.output_width >= IW*4 803 && cinfo.output_width >= iw*4
353 && cinfo.output_height >= IH*4) 804 && cinfo.output_height >= ih*4)
354 { 805 {
355 cinfo.scale_denom <<= 1; 806 cinfo.scale_denom <<= 1;
356 jpeg_calc_output_dimensions (&cinfo); 807 jpeg_calc_output_dimensions (&cinfo);
357 } 808 }
358 } 809 }
359 810
811 if (cinfo.output_components != 3)
812 longjmp (jerr.setjmp_buffer, 3);
813
814 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
815 {
816 cinfo.out_color_space = JCS_CMYK;
817 cinfo.output_components = 4;
818 }
819
360 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 820 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
361 if (!RETVAL) 821 if (!RETVAL)
362 longjmp (jerr.setjmp_buffer, 2); 822 longjmp (jerr.setjmp_buffer, 2);
363 823
364 data = gdk_pixbuf_get_pixels (RETVAL); 824 data = gdk_pixbuf_get_pixels (RETVAL);
365 rs = gdk_pixbuf_get_rowstride (RETVAL); 825 rs = gdk_pixbuf_get_rowstride (RETVAL);
366
367 if (cinfo.output_components != 3)
368 longjmp (jerr.setjmp_buffer, 3);
369 826
370 jpeg_start_decompress (&cinfo); 827 jpeg_start_decompress (&cinfo);
371 828
372 while (cinfo.output_scanline < cinfo.output_height) 829 while (cinfo.output_scanline < cinfo.output_height)
373 { 830 {
… …
380 rp [3] = (guchar *)rp [2] + rs; 837 rp [3] = (guchar *)rp [2] + rs;
381 838
382 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 839 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
383 } 840 }
384 841
842 if (cinfo.out_color_space == JCS_CMYK)
843 {
844 guchar *end = data + cinfo.output_height * rs;
845
846 while (data < end)
847 {
848 U32 c = data [0];
849 U32 m = data [1];
850 U32 y = data [2];
851 U32 k = data [3];
852
853 if (0)
854 if (cinfo.Adobe_transform == 2)
855 {
856 c ^= 0xff;
857 m ^= 0xff;
858 y ^= 0xff;
859 k ^= 0xff;
860 }
861
862 data [0] = (c * k + 0x80) / 0xff;
863 data [1] = (m * k + 0x80) / 0xff;
864 data [2] = (y * k + 0x80) / 0xff;
865 data [3] = 0xff;
866
867 data += 4;
868 }
869 }
870
385 jpeg_finish_decompress (&cinfo); 871 jpeg_finish_decompress (&cinfo);
386 fclose (fp);
387 jpeg_destroy_decompress (&cinfo); 872 jpeg_destroy_decompress (&cinfo);
873 perlinterp_acquire ();
388} 874}
389 OUTPUT: 875 OUTPUT:
390 RETVAL 876 RETVAL
391 877
392void 878void
393compare (GdkPixbuf *a, GdkPixbuf *b) 879compare (GdkPixbuf *a, GdkPixbuf *b)
394 PPCODE: 880 PPCODE:
881 perlinterp_release ();
395{ 882{
396 int w = gdk_pixbuf_get_width (a); 883 int w = gdk_pixbuf_get_width (a);
397 int h = gdk_pixbuf_get_height (a); 884 int h = gdk_pixbuf_get_height (a);
885
398 int sa = gdk_pixbuf_get_rowstride (a); 886 int sa = gdk_pixbuf_get_rowstride (a);
399 int sb = gdk_pixbuf_get_rowstride (b); 887 int sb = gdk_pixbuf_get_rowstride (b);
400 888
401 guchar *pa = gdk_pixbuf_get_pixels (a); 889 guchar *pa = gdk_pixbuf_get_pixels (a);
402 guchar *pb = gdk_pixbuf_get_pixels (b); 890 guchar *pb = gdk_pixbuf_get_pixels (b);
… …
426 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 914 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)); 915 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
428 } 916 }
429 } 917 }
430 918
919 perlinterp_acquire ();
920
431 EXTEND (SP, 2); 921 EXTEND (SP, 2);
432 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); 922 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
433 PUSHs (sv_2mortal (newSVnv (peak / 255.))); 923 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
434} 924}
435 925
436############################################################################# 926#############################################################################
437 927
438MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 928MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
439 929
930# currently only works for filenames (octet strings)
931
440SV * 932SV *
441foldcase (SV *pathsv) 933foldcase (SV *pathsv)
442 PROTOTYPE: $ 934 PROTOTYPE: $
443 CODE: 935 CODE:
444{ 936{
445 STRLEN plen; 937 STRLEN plen;
446 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 938 U8 *path = (U8 *)SvPV (pathsv, plen);
447 U8 *pend = path + plen; 939 U8 *pend = path + plen;
448 U8 dst [plen * 6 * 3], *dstp = dst; 940 U8 dst [plen * 8 * 3], *dstp = dst;
449 941
450 while (path < pend) 942 while (path < pend)
451 { 943 {
452 U8 ch = *path; 944 U8 ch = *path;
453 945
454 if (ch >= 'a' && ch <= 'z') 946 if (ch >= 'a' && ch <= 'z')
455 *dstp++ = *path++; 947 *dstp++ = *path++;
948 else if (ch >= 'A' && ch <= 'Z')
949 *dstp++ = *path++ + ('a' - 'A');
456 else if (ch >= '0' && ch <= '9') 950 else if (ch >= '0' && ch <= '9')
457 { 951 {
952 /* version sort, up to 8 digits */
458 STRLEN el, nl = 0; 953 STRLEN el, nl = 0;
459 while (*path >= '0' && *path <= '9' && path < pend) 954 while (*path >= '0' && *path <= '9' && path < pend)
460 path++, nl++; 955 path++, nl++;
461 956
462 for (el = nl; el < 6; el++) 957 for (el = nl; el < 8; el++)
463 *dstp++ = '0'; 958 *dstp++ = '0';
464 959
465 memcpy (dstp, path - nl, nl); 960 memcpy (dstp, path - nl, nl);
466 dstp += nl; 961 dstp += nl;
467 } 962 }
963 else
964 *dstp++ = *path++;
965#if 0
468 else 966 else
469 { 967 {
470 STRLEN cl; 968 STRLEN cl;
471 to_utf8_fold (path, dstp, &cl); 969 to_utf8_fold (path, dstp, &cl);
472 dstp += cl; 970 dstp += cl;
473 path += is_utf8_char (path); 971 path += is_utf8_char (path);
474 } 972 }
973#endif
475 } 974 }
476 975
477 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 976 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
478} 977}
479 OUTPUT: 978 OUTPUT:
… …
648{ 1147{
649 int i; 1148 int i;
650 AV *av, *result; 1149 AV *av, *result;
651 1150
652 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 1151 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
653 croak ("Not an array ref as first argument to make_histogram"); 1152 croak ("Not an array ref as first argument to extract_features");
654 1153
655 av = (AV *) SvRV (ar); 1154 av = (AV *) SvRV (ar);
656 result = newAV (); 1155 result = newAV ();
657 1156
658 for (i = 0; i <= av_len (av); ++i) 1157 for (i = 0; i <= av_len (av); ++i)
… …
711 feature_finish_pass_2 (&f_v); 1210 feature_finish_pass_2 (&f_v);
712 } 1211 }
713 1212
714 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; 1213 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
715 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; 1214 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
716 hist [6] = f_v.v1 ; hist [7] = f_v.v2 ; hist [8] = f_v.v3 ; 1215 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
717 1216
718 av_push (result, histsv); 1217 av_push (result, histsv);
719 } 1218 }
720 1219
721 RETVAL = newRV_noinc ((SV *)result); 1220 RETVAL = newRV_noinc ((SV *)result);
722} 1221}
723 OUTPUT: 1222 OUTPUT:
724 RETVAL 1223 RETVAL
725 1224
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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