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Comparing CV/CV.xs (file contents):
Revision 1.49 by root, Wed May 24 19:22:32 2017 UTC vs.
Revision 1.68 by root, Fri May 12 02:11:10 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
19#include <assert.h> 22#include <assert.h>
20 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
21#include "perlmulticore.h" 34#include "perlmulticore.h"
22 35
23#define IW 80 /* MUST match Schnauzer.pm! */ 36#define IW 80 /* MUST match Schnauzer.pm! */
24#define IH 60 /* MUST match Schnauzer.pm! */ 37#define IH 60 /* MUST match Schnauzer.pm! */
25 38
26#define RAND (seed = (seed + 7141) * 54773 % 134456)
27
28#define LINELENGTH 240 39#define LINELENGTH 240
29 40
30#define ELLIPSIS "\xe2\x80\xa6" 41#define ELLIPSIS "\xe2\x80\xa6"
31 42
32typedef char *octet_string; 43typedef char *octet_string;
44
45static magic_t magic_cookie[2]; /* !mime, mime */
33 46
34struct jpg_err_mgr 47struct jpg_err_mgr
35{ 48{
36 struct jpeg_error_mgr err; 49 struct jpeg_error_mgr err;
37 jmp_buf setjmp_buffer; 50 jmp_buf setjmp_buffer;
… …
191 204
192 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 205 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
193} 206}
194 207
195///////////////////////////////////////////////////////////////////////////// 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/////////////////////////////////////////////////////////////////////////////
196 303
197MODULE = Gtk2::CV PACKAGE = Gtk2::CV 304MODULE = Gtk2::CV PACKAGE = Gtk2::CV
198 305
199PROTOTYPES: ENABLE 306PROTOTYPES: ENABLE
200 307
308void
309_exit (int code)
310
311# calculate the common prefix length of two strings
201# missing function in perl. really :) 312# missing function in perl. really :)
202int 313int
203common_prefix_length (a, b) 314common_prefix_length (a, b)
204 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 315 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
205 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 316 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
… …
214 325
215 OUTPUT: 326 OUTPUT:
216 RETVAL 327 RETVAL
217 328
218const char * 329const char *
219magic (octet_string path) 330magic (SV *path_or_data)
331 ALIAS:
332 magic = 0
333 magic_mime = 1
334 magic_buffer = 2
335 magic_buffer_mime = 3
220 CODE: 336 CODE:
221{ 337{
222 static magic_t cookie; 338 STRLEN len;
339 char *data = SvPVbyte (path_or_data, len);
223 340
224 if (!cookie) 341 if (!magic_cookie[0])
225 { 342 {
226 cookie = magic_open (MAGIC_SYMLINK); 343 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
227 344 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
228 if (cookie)
229 magic_load (cookie, 0); 345 magic_load (magic_cookie[0], 0);
230 else
231 XSRETURN_UNDEF;
232 }
233
234 RETVAL = magic_file (cookie, path);
235}
236 OUTPUT:
237 RETVAL
238
239const char *
240magic_mime (octet_string path)
241 CODE:
242{
243 static magic_t cookie;
244
245 if (!cookie)
246 {
247 cookie = magic_open (MAGIC_MIME | MAGIC_SYMLINK);
248
249 if (cookie)
250 magic_load (cookie, 0); 346 magic_load (magic_cookie[1], 0);
251 else
252 XSRETURN_UNDEF;
253 } 347 }
254 348
255 perlinterp_release (); 349 perlinterp_release ();
256 RETVAL = magic_file (cookie, path); 350
351 RETVAL = ix & 2
352 ? magic_buffer (magic_cookie[ix & 1], data, len)
353 : magic_file (magic_cookie[ix & 1], data);
354
257 perlinterp_acquire (); 355 perlinterp_acquire ();
258} 356}
259 OUTPUT: 357 OUTPUT:
260 RETVAL 358 RETVAL
261 359
… …
316 : angle); 414 : angle);
317 perlinterp_acquire (); 415 perlinterp_acquire ();
318 OUTPUT: 416 OUTPUT:
319 RETVAL 417 RETVAL
320 418
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+0] == 0
492 && data[0x8000+1] == (U8)'B'
493 && data[0x8000+2] == (U8)'E'
494 && data[0x8000+3] == (U8)'A'
495 && data[0x8000+4] == (U8)'0'
496 && data[0x8000+5] == (U8)'1')
497 RETVAL = "video/iso-bluray";
498 else if (data_len >= 0x8000 + 6
499 && data[0x8000+0] == 0
500 && data[0x8000+1] == (U8)'C'
501 && data[0x8000+2] == (U8)'D'
502 && data[0x8000+3] == (U8)'0'
503 && data[0x8000+4] == (U8)'0'
504 && data[0x8000+5] == (U8)'1')
505 RETVAL = "video/iso9660";
506
507 else
508 XSRETURN_UNDEF;
509}
510 OUTPUT:
511 RETVAL
512
321GdkPixbuf_noinc * 513GdkPixbuf_noinc *
514decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
515 CODE:
516{
517#if WEBP
518 STRLEN data_size;
519 int alpha;
520 WebPData data;
521 WebPDemuxer *demux;
522 WebPIterator iter;
523 WebPDecoderConfig config;
524 int inw, inh;
525
526 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
527 data.size = data_size;
528
529 perlinterp_release ();
530
531 RETVAL = 0;
532
533 if (!(demux = WebPDemux (&data)))
534 goto err_demux;
535
536 if (!WebPDemuxGetFrame (demux, 1, &iter))
537 goto err_iter;
538
539 if (!WebPInitDecoderConfig (&config))
540 goto err_iter;
541
542 config.options.use_threads = 1;
543
544 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
545 goto err_iter;
546
547 inw = config.input.width;
548 inh = config.input.height;
549
550 if (thumbnail)
551 {
552 if (inw * ih > inh * iw)
553 ih = (iw * inh + inw - 1) / inw;
554 else
555 iw = (ih * inw + inh - 1) / inh;
556
557 config.options.bypass_filtering = 1;
558 config.options.no_fancy_upsampling = 1;
559
560 config.options.use_scaling = 1;
561 config.options.scaled_width = iw;
562 config.options.scaled_height = ih;
563 }
564 else
565 {
566 iw = inw;
567 ih = inh;
568 }
569
570 alpha = !!config.input.has_alpha;
571
572 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
573 if (!RETVAL)
574 goto err_iter;
575
576 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
577 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
578 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
579 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
580 config.output.is_external_memory = 1;
581
582 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
583 {
584 g_object_unref (RETVAL);
585 RETVAL = 0;
586 goto err_iter;
587 }
588
589 err_iter:
590 WebPDemuxReleaseIterator (&iter);
591 err_demux:
592 WebPDemuxDelete (demux);
593
594 perlinterp_acquire ();
595#else
596 croak ("load_webp: webp not enabled at compile time");
597#endif
598}
599 OUTPUT:
600 RETVAL
601
602GdkPixbuf_noinc *
603decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
604 CODE:
605{
606#if JXL
607 JxlDecoder *dec;
608 JxlBasicInfo info;
609 const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data);
610 size_t avail_in = SvCUR (image_data);
611 const char *error = 0;
612 JxlDecoderStatus status;
613 static void *runner_cache;
614 void *runner = 0;
615
616 RETVAL = 0;
617
618 if (runner_cache)
619 runner = runner_cache;
620 else
621 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
622
623 runner_cache = 0;
624
625 perlinterp_release ();
626
627 dec = JxlDecoderCreate (0);
628
629 error = "JxlDecoderCreate failed";
630 if (!dec)
631 goto done;
632
633 status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
634 error = "JxlDecoderSetParallelRunner failed";
635 if (status != JXL_DEC_SUCCESS)
636 goto done;
637
638 error = "JxlDecoderSubscribeEvents failed";
639 status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE);
640 if (status != JXL_DEC_SUCCESS)
641 goto done;
642
643 status = JxlDecoderSetInput (dec, next_in, avail_in);
644 error = "JxlDecoderSetInput failed";
645 if (status != JXL_DEC_SUCCESS)
646 goto done;
647
648 for (;;)
649 {
650 status = JxlDecoderProcessInput (dec);
651
652 switch (status)
653 {
654 case JXL_DEC_FULL_IMAGE:
655 error = 0;
656 goto done;
657
658 case JXL_DEC_ERROR:
659 error = "JxlDecoderProcessInput failed";
660 goto done;
661
662 case JXL_DEC_NEED_MORE_INPUT:
663 error = "incomplete file";
664 goto done;
665
666 case JXL_DEC_SUCCESS:
667 error = "incomplete decode";
668 goto done;
669
670 case JXL_DEC_BASIC_INFO:
671 {
672 status = JxlDecoderGetBasicInfo (dec, &info);
673 error = "JxlDecoderGetBasicInfo failed";
674 if (status != JXL_DEC_SUCCESS)
675 goto done;
676
677 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
678 error = "unable to allocate pixbuf";
679 if (!RETVAL)
680 goto done;
681
682 JxlPixelFormat format = {
683 info.alpha_bits ? 4 : 3,
684 JXL_TYPE_UINT8,
685 JXL_NATIVE_ENDIAN,
686 gdk_pixbuf_get_rowstride (RETVAL)
687 };
688
689 // cannot use gdk_pixbuf_get_byte_length because that does
690 // not return the size of the buffer, but the size of the buffer without
691 // the last padding bytes. the internal buffer is rowstride * ysize,
692 // and this is what the jxl decoder needs. none of this is documented
693 // in either library, of course.
694
695 status = JxlDecoderSetImageOutBuffer (
696 dec,
697 &format,
698 gdk_pixbuf_get_pixels (RETVAL),
699 gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
700 );
701 error = "JxlDecoderSetImageOutBuffer failed";
702 if (status != JXL_DEC_SUCCESS)
703 goto done;
704 }
705 break;
706
707 default:
708 error = "unexpected event";
709 goto done;
710 }
711 }
712
713 done:
714 if (dec)
715 JxlDecoderDestroy (dec);
716
717 perlinterp_acquire ();
718
719 if (runner_cache)
720 JxlThreadParallelRunnerDestroy (runner);
721
722 runner_cache = runner;
723
724 if (error)
725 {
726 if (RETVAL)
727 g_object_unref (RETVAL);
728
729 croak ("load_jxl: %s (status %d)", error, status);
730 }
731#else
732 croak ("load_jxl: jpeg-xl not enabled at compile time");
733#endif
734}
735 OUTPUT:
736 RETVAL
737
738GdkPixbuf_noinc *
322load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0) 739decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
323 CODE: 740 CODE:
324{ 741{
325 struct jpeg_decompress_struct cinfo; 742 struct jpeg_decompress_struct cinfo;
326 struct jpg_err_mgr jerr; 743 struct jpg_err_mgr jerr;
327 guchar *data;
328 int rs; 744 int rs;
329 FILE *fp;
330 volatile GdkPixbuf *pb = 0; 745 volatile GdkPixbuf *pb = 0;
746 STRLEN data_len;
747 guchar *data = SvPVbyte (image_data, data_len);
331 748
332 RETVAL = 0; 749 RETVAL = 0;
333
334 fp = fopen (SvPVbyte_nolen (path), "rb");
335
336 if (!fp)
337 XSRETURN_UNDEF;
338 750
339 perlinterp_release (); 751 perlinterp_release ();
340 752
341 cinfo.err = jpeg_std_error (&jerr.err); 753 cinfo.err = jpeg_std_error (&jerr.err);
342 754
343 jerr.err.error_exit = cv_error_exit; 755 jerr.err.error_exit = cv_error_exit;
344 jerr.err.output_message = cv_error_output; 756 jerr.err.output_message = cv_error_output;
345 757
346 if ((rs = setjmp (jerr.setjmp_buffer))) 758 if ((rs = setjmp (jerr.setjmp_buffer)))
347 { 759 {
348 fclose (fp);
349 jpeg_destroy_decompress (&cinfo); 760 jpeg_destroy_decompress (&cinfo);
350 761
351 if (pb) 762 if (pb)
352 g_object_unref ((gpointer)pb); 763 g_object_unref ((gpointer)pb);
353 764
354 perlinterp_acquire (); 765 perlinterp_acquire ();
355 XSRETURN_UNDEF; 766 XSRETURN_UNDEF;
356 } 767 }
357 768
769 if (!data_len)
770 longjmp (jerr.setjmp_buffer, 4);
771
358 jpeg_create_decompress (&cinfo); 772 jpeg_create_decompress (&cinfo);
773 cv_jpeg_mem_src (&cinfo, data, data_len);
359 774
360 jpeg_stdio_src (&cinfo, fp);
361 jpeg_read_header (&cinfo, TRUE); 775 jpeg_read_header (&cinfo, TRUE);
362 776
363 cinfo.dct_method = JDCT_DEFAULT; 777 cinfo.dct_method = JDCT_DEFAULT;
364 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 778 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
365 cinfo.do_block_smoothing = FALSE; 779 cinfo.do_block_smoothing = FALSE;
… …
444 data += 4; 858 data += 4;
445 } 859 }
446 } 860 }
447 861
448 jpeg_finish_decompress (&cinfo); 862 jpeg_finish_decompress (&cinfo);
449 fclose (fp);
450 jpeg_destroy_decompress (&cinfo); 863 jpeg_destroy_decompress (&cinfo);
451 perlinterp_acquire (); 864 perlinterp_acquire ();
452} 865}
453 OUTPUT: 866 OUTPUT:
454 RETVAL 867 RETVAL
… …
513 CODE: 926 CODE:
514{ 927{
515 STRLEN plen; 928 STRLEN plen;
516 U8 *path = (U8 *)SvPV (pathsv, plen); 929 U8 *path = (U8 *)SvPV (pathsv, plen);
517 U8 *pend = path + plen; 930 U8 *pend = path + plen;
518 U8 dst [plen * 6 * 3], *dstp = dst; 931 U8 dst [plen * 8 * 3], *dstp = dst;
519 932
520 while (path < pend) 933 while (path < pend)
521 { 934 {
522 U8 ch = *path; 935 U8 ch = *path;
523 936
… …
525 *dstp++ = *path++; 938 *dstp++ = *path++;
526 else if (ch >= 'A' && ch <= 'Z') 939 else if (ch >= 'A' && ch <= 'Z')
527 *dstp++ = *path++ + ('a' - 'A'); 940 *dstp++ = *path++ + ('a' - 'A');
528 else if (ch >= '0' && ch <= '9') 941 else if (ch >= '0' && ch <= '9')
529 { 942 {
943 /* version sort, up to 8 digits */
530 STRLEN el, nl = 0; 944 STRLEN el, nl = 0;
531 while (*path >= '0' && *path <= '9' && path < pend) 945 while (*path >= '0' && *path <= '9' && path < pend)
532 path++, nl++; 946 path++, nl++;
533 947
534 for (el = nl; el < 6; el++) 948 for (el = nl; el < 8; el++)
535 *dstp++ = '0'; 949 *dstp++ = '0';
536 950
537 memcpy (dstp, path - nl, nl); 951 memcpy (dstp, path - nl, nl);
538 dstp += nl; 952 dstp += nl;
539 } 953 }

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