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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 1.69 by root, Wed Jun 7 17:18:46 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);
… …
202 325
203 OUTPUT: 326 OUTPUT:
204 RETVAL 327 RETVAL
205 328
206const char * 329const char *
207magic (const char *path) 330magic (SV *path_or_data)
331 ALIAS:
332 magic = 0
333 magic_mime = 1
334 magic_buffer = 2
335 magic_buffer_mime = 3
208 CODE: 336 CODE:
209{ 337{
210 static magic_t cookie; 338 STRLEN len;
339 char *data = SvPVbyte (path_or_data, len);
211 340
212 if (!cookie) 341 if (!magic_cookie[0])
342 {
343 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
344 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
345 magic_load (magic_cookie[0], 0);
346 magic_load (magic_cookie[1], 0);
213 { 347 }
214 cookie = magic_open (MAGIC_NONE);
215 348
216 if (cookie) 349 perlinterp_release ();
217 magic_load (cookie, 0);
218 else
219 XSRETURN_UNDEF;
220 }
221 350
222 RETVAL = magic_file (cookie, path); 351 RETVAL = ix & 2
352 ? magic_buffer (magic_cookie[ix & 1], data, len)
353 : magic_file (magic_cookie[ix & 1], data);
354
355 perlinterp_acquire ();
223} 356}
224 OUTPUT: 357 OUTPUT:
225 RETVAL 358 RETVAL
226 359
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 360# missing/broken in Gtk2 perl module
361
362void
363gdk_window_clear_hints (GdkWindow *window)
364 CODE:
365 gdk_window_set_geometry_hints (window, 0, 0);
249 366
250gboolean 367gboolean
251gdk_net_wm_supports (GdkAtom property) 368gdk_net_wm_supports (GdkAtom property)
252 CODE: 369 CODE:
253#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 370#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
259 RETVAL 376 RETVAL
260 377
261GdkPixbuf_noinc * 378GdkPixbuf_noinc *
262dealpha_expose (GdkPixbuf *pb) 379dealpha_expose (GdkPixbuf *pb)
263 CODE: 380 CODE:
381 perlinterp_release ();
264{ 382{
265 int w = gdk_pixbuf_get_width (pb); 383 int w = gdk_pixbuf_get_width (pb);
266 int h = gdk_pixbuf_get_height (pb); 384 int h = gdk_pixbuf_get_height (pb);
267 int bpp = gdk_pixbuf_get_n_channels (pb); 385 int bpp = gdk_pixbuf_get_n_channels (pb);
268 int x, y, i; 386 int x, y, i;
… …
277 for (x = 0; x < w; x++) 395 for (x = 0; x < w; x++)
278 for (y = 0; y < h; y++) 396 for (y = 0; y < h; y++)
279 for (i = 0; i < 3; i++) 397 for (i = 0; i < 3; i++)
280 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 398 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
281} 399}
400 perlinterp_acquire ();
282 OUTPUT: 401 OUTPUT:
283 RETVAL 402 RETVAL
284 403
285GdkPixbuf_noinc * 404GdkPixbuf_noinc *
286rotate (GdkPixbuf *pb, int angle) 405rotate (GdkPixbuf *pb, int angle)
287 CODE: 406 CODE:
407 perlinterp_release ();
408 if (angle < 0)
409 angle += 360;
288 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 410 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
289 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 411 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
290 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 412 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
291 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 413 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
292 : angle); 414 : angle);
415 perlinterp_acquire ();
293 OUTPUT: 416 OUTPUT:
294 RETVAL 417 RETVAL
295 418
419const char *
420filetype (SV *image_data)
421 CODE:
422{
423 STRLEN data_len;
424 U8 *data = SvPVbyte (image_data, data_len);
425 static const unsigned char jxl_header[] = {
426 0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a
427 };
428
429 if (data_len >= 20
430 && data[0] == 0xff
431 && data[1] == 0xd8
432 && data[2] == 0xff)
433 RETVAL = "image/jpeg";
434 else if (data_len >= 12
435 && data[ 0] == (U8)'R'
436 && data[ 1] == (U8)'I'
437 && data[ 2] == (U8)'F'
438 && data[ 3] == (U8)'F'
439 && data[ 8] == (U8)'W'
440 && data[ 9] == (U8)'E'
441 && data[10] == (U8)'B'
442 && data[11] == (U8)'P')
443 RETVAL = "image/webp";
444 else if (data_len >= 16
445 && data[ 0] == 0x89
446 && data[ 1] == (U8)'P'
447 && data[ 2] == (U8)'N'
448 && data[ 3] == (U8)'G'
449 && data[ 4] == 0x0d
450 && data[ 5] == 0x0a
451 && data[ 6] == 0x1a
452 && data[ 7] == 0x0a)
453 RETVAL = "image/png";
454 else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0)
455 RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck
456 else if (data_len >= 2
457 && data[0] == 0xff
458 && data[1] == 0x0a)
459 RETVAL = "image/jxl";
460 else if (data_len >= 13
461 && data[0] == 'G'
462 && data[1] == 'I'
463 && data[2] == 'F'
464 && data[3] == '8'
465 //&& (data[4] == '7' || data[4] == '9')
466 && data[5] == 'a')
467 {
468 RETVAL = "image/gif";
469
470 // now see if its animated - we require the netscape application header for this
471 int ofs = 13;
472
473 if (data[10] & 0x80)
474 ofs += (1 << ((data[10] & 7) + 1)) * 3;
475
476 if (data_len >= ofs + 2 + 1 + 11)
477 {
478
479 // skip a graphic control extension block. we assume
480 // there is at most one such block - while the NAB
481 // has to come firstz, some files do not obey this
482 if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
483 ofs += 3 + data[ofs + 2] + 1;
484
485 if (data_len >= ofs + 2 + 1 + 11)
486 if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
487 RETVAL = "video/gif";
488 }
489 }
490 else if (data_len >= 0x8000 + 6
491 && data[0x8000+1] == (U8)'B'
492 && data[0x8000+2] == (U8)'E'
493 && data[0x8000+3] == (U8)'A'
494 && data[0x8000+4] == (U8)'0'
495 && data[0x8000+5] == (U8)'1')
496 RETVAL = "video/iso-bluray";
497 else if (data_len >= 0x8000 + 6
498 && data[0x8000+1] == (U8)'C'
499 && data[0x8000+2] == (U8)'D'
500 && data[0x8000+3] == (U8)'0'
501 && data[0x8000+4] == (U8)'0'
502 && data[0x8000+5] == (U8)'1')
503 RETVAL = "video/iso9660";
504
505 else
506 XSRETURN_UNDEF;
507}
508 OUTPUT:
509 RETVAL
510
296GdkPixbuf_noinc * 511GdkPixbuf_noinc *
297load_jpeg (SV *path, int thumbnail=0) 512decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
513 CODE:
514{
515#if WEBP
516 STRLEN data_size;
517 int alpha;
518 WebPData data;
519 WebPDemuxer *demux;
520 WebPIterator iter;
521 WebPDecoderConfig config;
522 int inw, inh;
523
524 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
525 data.size = data_size;
526
527 perlinterp_release ();
528
529 RETVAL = 0;
530
531 if (!(demux = WebPDemux (&data)))
532 goto err_demux;
533
534 if (!WebPDemuxGetFrame (demux, 1, &iter))
535 goto err_iter;
536
537 if (!WebPInitDecoderConfig (&config))
538 goto err_iter;
539
540 config.options.use_threads = 1;
541
542 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
543 goto err_iter;
544
545 inw = config.input.width;
546 inh = config.input.height;
547
548 if (thumbnail)
549 {
550 if (inw * ih > inh * iw)
551 ih = (iw * inh + inw - 1) / inw;
552 else
553 iw = (ih * inw + inh - 1) / inh;
554
555 config.options.bypass_filtering = 1;
556 config.options.no_fancy_upsampling = 1;
557
558 config.options.use_scaling = 1;
559 config.options.scaled_width = iw;
560 config.options.scaled_height = ih;
561 }
562 else
563 {
564 iw = inw;
565 ih = inh;
566 }
567
568 alpha = !!config.input.has_alpha;
569
570 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
571 if (!RETVAL)
572 goto err_iter;
573
574 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
575 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
576 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
577 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
578 config.output.is_external_memory = 1;
579
580 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
581 {
582 g_object_unref (RETVAL);
583 RETVAL = 0;
584 goto err_iter;
585 }
586
587 err_iter:
588 WebPDemuxReleaseIterator (&iter);
589 err_demux:
590 WebPDemuxDelete (demux);
591
592 perlinterp_acquire ();
593#else
594 croak ("load_webp: webp not enabled at compile time");
595#endif
596}
597 OUTPUT:
598 RETVAL
599
600GdkPixbuf_noinc *
601decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
602 CODE:
603{
604#if JXL
605 JxlDecoder *dec;
606 JxlBasicInfo info;
607 const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data);
608 size_t avail_in = SvCUR (image_data);
609 const char *error = 0;
610 JxlDecoderStatus status;
611 static void *runner_cache;
612 void *runner = 0;
613
614 RETVAL = 0;
615
616 if (runner_cache)
617 runner = runner_cache;
618 else
619 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
620
621 runner_cache = 0;
622
623 perlinterp_release ();
624
625 dec = JxlDecoderCreate (0);
626
627 error = "JxlDecoderCreate failed";
628 if (!dec)
629 goto done;
630
631 status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
632 error = "JxlDecoderSetParallelRunner failed";
633 if (status != JXL_DEC_SUCCESS)
634 goto done;
635
636 error = "JxlDecoderSubscribeEvents failed";
637 status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE);
638 if (status != JXL_DEC_SUCCESS)
639 goto done;
640
641 status = JxlDecoderSetInput (dec, next_in, avail_in);
642 error = "JxlDecoderSetInput failed";
643 if (status != JXL_DEC_SUCCESS)
644 goto done;
645
646 for (;;)
647 {
648 status = JxlDecoderProcessInput (dec);
649
650 switch (status)
651 {
652 case JXL_DEC_FULL_IMAGE:
653 error = 0;
654 goto done;
655
656 case JXL_DEC_ERROR:
657 error = "JxlDecoderProcessInput failed";
658 goto done;
659
660 case JXL_DEC_NEED_MORE_INPUT:
661 error = "incomplete file";
662 goto done;
663
664 case JXL_DEC_SUCCESS:
665 error = "incomplete decode";
666 goto done;
667
668 case JXL_DEC_BASIC_INFO:
669 {
670 status = JxlDecoderGetBasicInfo (dec, &info);
671 error = "JxlDecoderGetBasicInfo failed";
672 if (status != JXL_DEC_SUCCESS)
673 goto done;
674
675 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
676 error = "unable to allocate pixbuf";
677 if (!RETVAL)
678 goto done;
679
680 JxlPixelFormat format = {
681 info.alpha_bits ? 4 : 3,
682 JXL_TYPE_UINT8,
683 JXL_NATIVE_ENDIAN,
684 gdk_pixbuf_get_rowstride (RETVAL)
685 };
686
687 // cannot use gdk_pixbuf_get_byte_length because that does
688 // not return the size of the buffer, but the size of the buffer without
689 // the last padding bytes. the internal buffer is rowstride * ysize,
690 // and this is what the jxl decoder needs. none of this is documented
691 // in either library, of course.
692
693 status = JxlDecoderSetImageOutBuffer (
694 dec,
695 &format,
696 gdk_pixbuf_get_pixels (RETVAL),
697 gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
698 );
699 error = "JxlDecoderSetImageOutBuffer failed";
700 if (status != JXL_DEC_SUCCESS)
701 goto done;
702 }
703 break;
704
705 default:
706 error = "unexpected event";
707 goto done;
708 }
709 }
710
711 done:
712 if (dec)
713 JxlDecoderDestroy (dec);
714
715 perlinterp_acquire ();
716
717 if (runner_cache)
718 JxlThreadParallelRunnerDestroy (runner);
719
720 runner_cache = runner;
721
722 if (error)
723 {
724 if (RETVAL)
725 g_object_unref (RETVAL);
726
727 croak ("load_jxl: %s (status %d)", error, status);
728 }
729#else
730 croak ("load_jxl: jpeg-xl not enabled at compile time");
731#endif
732}
733 OUTPUT:
734 RETVAL
735
736GdkPixbuf_noinc *
737decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
298 CODE: 738 CODE:
299{ 739{
300 struct jpeg_decompress_struct cinfo; 740 struct jpeg_decompress_struct cinfo;
301 struct jpg_err_mgr jerr; 741 struct jpg_err_mgr jerr;
302 guchar *data;
303 int rs; 742 int rs;
304 FILE *fp;
305 volatile GdkPixbuf *pb = 0; 743 volatile GdkPixbuf *pb = 0;
744 STRLEN data_len;
745 guchar *data = SvPVbyte (image_data, data_len);
306 746
307 RETVAL = 0; 747 RETVAL = 0;
308 748
309 fp = fopen (SvPVbyte_nolen (path), "rb"); 749 perlinterp_release ();
310
311 if (!fp)
312 XSRETURN_UNDEF;
313 750
314 cinfo.err = jpeg_std_error (&jerr.err); 751 cinfo.err = jpeg_std_error (&jerr.err);
315 752
316 jerr.err.error_exit = cv_error_exit; 753 jerr.err.error_exit = cv_error_exit;
317 jerr.err.output_message = cv_error_output; 754 jerr.err.output_message = cv_error_output;
318 755
319 if ((rs = setjmp (jerr.setjmp_buffer))) 756 if ((rs = setjmp (jerr.setjmp_buffer)))
320 { 757 {
321 fclose (fp);
322 jpeg_destroy_decompress (&cinfo); 758 jpeg_destroy_decompress (&cinfo);
323 759
324 if (pb) 760 if (pb)
325 g_object_unref ((gpointer)pb); 761 g_object_unref ((gpointer)pb);
326 762
763 perlinterp_acquire ();
327 XSRETURN_UNDEF; 764 XSRETURN_UNDEF;
328 } 765 }
329 766
767 if (!data_len)
768 longjmp (jerr.setjmp_buffer, 4);
769
330 jpeg_create_decompress (&cinfo); 770 jpeg_create_decompress (&cinfo);
771 cv_jpeg_mem_src (&cinfo, data, data_len);
331 772
332 jpeg_stdio_src (&cinfo, fp);
333 jpeg_read_header (&cinfo, TRUE); 773 jpeg_read_header (&cinfo, TRUE);
334 774
335 cinfo.dct_method = JDCT_DEFAULT; 775 cinfo.dct_method = JDCT_DEFAULT;
336 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 776 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
337 cinfo.do_block_smoothing = FALSE; 777 cinfo.do_block_smoothing = FALSE;
… …
347 { 787 {
348 cinfo.dct_method = JDCT_FASTEST; 788 cinfo.dct_method = JDCT_FASTEST;
349 cinfo.do_fancy_upsampling = FALSE; 789 cinfo.do_fancy_upsampling = FALSE;
350 790
351 while (cinfo.scale_denom < 8 791 while (cinfo.scale_denom < 8
352 && cinfo.output_width >= IW*4 792 && cinfo.output_width >= iw*4
353 && cinfo.output_height >= IH*4) 793 && cinfo.output_height >= ih*4)
354 { 794 {
355 cinfo.scale_denom <<= 1; 795 cinfo.scale_denom <<= 1;
356 jpeg_calc_output_dimensions (&cinfo); 796 jpeg_calc_output_dimensions (&cinfo);
357 } 797 }
358 } 798 }
359 799
800 if (cinfo.output_components != 3)
801 longjmp (jerr.setjmp_buffer, 3);
802
803 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
804 {
805 cinfo.out_color_space = JCS_CMYK;
806 cinfo.output_components = 4;
807 }
808
360 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 809 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
361 if (!RETVAL) 810 if (!RETVAL)
362 longjmp (jerr.setjmp_buffer, 2); 811 longjmp (jerr.setjmp_buffer, 2);
363 812
364 data = gdk_pixbuf_get_pixels (RETVAL); 813 data = gdk_pixbuf_get_pixels (RETVAL);
365 rs = gdk_pixbuf_get_rowstride (RETVAL); 814 rs = gdk_pixbuf_get_rowstride (RETVAL);
366
367 if (cinfo.output_components != 3)
368 longjmp (jerr.setjmp_buffer, 3);
369 815
370 jpeg_start_decompress (&cinfo); 816 jpeg_start_decompress (&cinfo);
371 817
372 while (cinfo.output_scanline < cinfo.output_height) 818 while (cinfo.output_scanline < cinfo.output_height)
373 { 819 {
… …
380 rp [3] = (guchar *)rp [2] + rs; 826 rp [3] = (guchar *)rp [2] + rs;
381 827
382 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 828 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
383 } 829 }
384 830
831 if (cinfo.out_color_space == JCS_CMYK)
832 {
833 guchar *end = data + cinfo.output_height * rs;
834
835 while (data < end)
836 {
837 U32 c = data [0];
838 U32 m = data [1];
839 U32 y = data [2];
840 U32 k = data [3];
841
842 if (0)
843 if (cinfo.Adobe_transform == 2)
844 {
845 c ^= 0xff;
846 m ^= 0xff;
847 y ^= 0xff;
848 k ^= 0xff;
849 }
850
851 data [0] = (c * k + 0x80) / 0xff;
852 data [1] = (m * k + 0x80) / 0xff;
853 data [2] = (y * k + 0x80) / 0xff;
854 data [3] = 0xff;
855
856 data += 4;
857 }
858 }
859
385 jpeg_finish_decompress (&cinfo); 860 jpeg_finish_decompress (&cinfo);
386 fclose (fp);
387 jpeg_destroy_decompress (&cinfo); 861 jpeg_destroy_decompress (&cinfo);
862 perlinterp_acquire ();
388} 863}
389 OUTPUT: 864 OUTPUT:
390 RETVAL 865 RETVAL
391 866
392void 867void
393compare (GdkPixbuf *a, GdkPixbuf *b) 868compare (GdkPixbuf *a, GdkPixbuf *b)
394 PPCODE: 869 PPCODE:
870 perlinterp_release ();
395{ 871{
396 int w = gdk_pixbuf_get_width (a); 872 int w = gdk_pixbuf_get_width (a);
397 int h = gdk_pixbuf_get_height (a); 873 int h = gdk_pixbuf_get_height (a);
874
398 int sa = gdk_pixbuf_get_rowstride (a); 875 int sa = gdk_pixbuf_get_rowstride (a);
399 int sb = gdk_pixbuf_get_rowstride (b); 876 int sb = gdk_pixbuf_get_rowstride (b);
400 877
401 guchar *pa = gdk_pixbuf_get_pixels (a); 878 guchar *pa = gdk_pixbuf_get_pixels (a);
402 guchar *pb = gdk_pixbuf_get_pixels (b); 879 guchar *pb = gdk_pixbuf_get_pixels (b);
… …
426 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 903 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)); 904 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
428 } 905 }
429 } 906 }
430 907
908 perlinterp_acquire ();
909
431 EXTEND (SP, 2); 910 EXTEND (SP, 2);
432 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); 911 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
433 PUSHs (sv_2mortal (newSVnv (peak / 255.))); 912 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
434} 913}
435 914
436############################################################################# 915#############################################################################
437 916
438MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 917MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
439 918
919# currently only works for filenames (octet strings)
920
440SV * 921SV *
441foldcase (SV *pathsv) 922foldcase (SV *pathsv)
442 PROTOTYPE: $ 923 PROTOTYPE: $
443 CODE: 924 CODE:
444{ 925{
445 STRLEN plen; 926 STRLEN plen;
446 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 927 U8 *path = (U8 *)SvPV (pathsv, plen);
447 U8 *pend = path + plen; 928 U8 *pend = path + plen;
448 U8 dst [plen * 6 * 3], *dstp = dst; 929 U8 dst [plen * 8 * 3], *dstp = dst;
449 930
450 while (path < pend) 931 while (path < pend)
451 { 932 {
452 U8 ch = *path; 933 U8 ch = *path;
453 934
454 if (ch >= 'a' && ch <= 'z') 935 if (ch >= 'a' && ch <= 'z')
455 *dstp++ = *path++; 936 *dstp++ = *path++;
937 else if (ch >= 'A' && ch <= 'Z')
938 *dstp++ = *path++ + ('a' - 'A');
456 else if (ch >= '0' && ch <= '9') 939 else if (ch >= '0' && ch <= '9')
457 { 940 {
941 /* version sort, up to 8 digits */
458 STRLEN el, nl = 0; 942 STRLEN el, nl = 0;
459 while (*path >= '0' && *path <= '9' && path < pend) 943 while (*path >= '0' && *path <= '9' && path < pend)
460 path++, nl++; 944 path++, nl++;
461 945
462 for (el = nl; el < 6; el++) 946 for (el = nl; el < 8; el++)
463 *dstp++ = '0'; 947 *dstp++ = '0';
464 948
465 memcpy (dstp, path - nl, nl); 949 memcpy (dstp, path - nl, nl);
466 dstp += nl; 950 dstp += nl;
467 } 951 }
952 else
953 *dstp++ = *path++;
954#if 0
468 else 955 else
469 { 956 {
470 STRLEN cl; 957 STRLEN cl;
471 to_utf8_fold (path, dstp, &cl); 958 to_utf8_fold (path, dstp, &cl);
472 dstp += cl; 959 dstp += cl;
473 path += is_utf8_char (path); 960 path += is_utf8_char (path);
474 } 961 }
962#endif
475 } 963 }
476 964
477 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 965 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
478} 966}
479 OUTPUT: 967 OUTPUT:
… …
648{ 1136{
649 int i; 1137 int i;
650 AV *av, *result; 1138 AV *av, *result;
651 1139
652 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 1140 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
653 croak ("Not an array ref as first argument to make_histogram"); 1141 croak ("Not an array ref as first argument to extract_features");
654 1142
655 av = (AV *) SvRV (ar); 1143 av = (AV *) SvRV (ar);
656 result = newAV (); 1144 result = newAV ();
657 1145
658 for (i = 0; i <= av_len (av); ++i) 1146 for (i = 0; i <= av_len (av); ++i)
… …
721 RETVAL = newRV_noinc ((SV *)result); 1209 RETVAL = newRV_noinc ((SV *)result);
722} 1210}
723 OUTPUT: 1211 OUTPUT:
724 RETVAL 1212 RETVAL
725 1213
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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