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Comparing CV/CV.xs (file contents):
Revision 1.51 by root, Sat Dec 23 04:11:49 2017 UTC vs.
Revision 1.64 by root, Wed Dec 1 03:32:40 2021 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>
14#include <gdk/gdkx.h> 16#include <gdk/gdkx.h>
15#include <gdk-pixbuf/gdk-pixbuf.h> 17#include <gdk-pixbuf/gdk-pixbuf.h>
16 18
18#include <gtk2perl.h> 20#include <gtk2perl.h>
19 21
20#include <assert.h> 22#include <assert.h>
21 23
22#if WEBP 24#if WEBP
25#include <webp/demux.h>
23#include <webp/decode.h> 26#include <webp/decode.h>
24#endif 27#endif
25 28
29#if JXL
30#include <jxl/decode.h>
31#include "jxl/thread_parallel_runner.h"
32#endif
33
26#include "perlmulticore.h" 34#include "perlmulticore.h"
27 35
28#define IW 80 /* MUST match Schnauzer.pm! */ 36#define IW 80 /* MUST match Schnauzer.pm! */
29#define IH 60 /* MUST match Schnauzer.pm! */ 37#define IH 60 /* MUST match Schnauzer.pm! */
30
31#define RAND (seed = (seed + 7141) * 54773 % 134456)
32 38
33#define LINELENGTH 240 39#define LINELENGTH 240
34 40
35#define ELLIPSIS "\xe2\x80\xa6" 41#define ELLIPSIS "\xe2\x80\xa6"
36 42
198 204
199 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 205 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
200} 206}
201 207
202///////////////////////////////////////////////////////////////////////////// 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/////////////////////////////////////////////////////////////////////////////
203 303
204MODULE = Gtk2::CV PACKAGE = Gtk2::CV 304MODULE = Gtk2::CV PACKAGE = Gtk2::CV
205 305
206PROTOTYPES: ENABLE 306PROTOTYPES: ENABLE
207 307
308# calculate the common prefix length of two strings
208# missing function in perl. really :) 309# missing function in perl. really :)
209int 310int
210common_prefix_length (a, b) 311common_prefix_length (a, b)
211 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 312 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
212 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 313 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
232 CODE: 333 CODE:
233{ 334{
234 STRLEN len; 335 STRLEN len;
235 char *data = SvPVbyte (path_or_data, len); 336 char *data = SvPVbyte (path_or_data, len);
236 337
237 perlinterp_release ();
238
239 if (!magic_cookie[0]) 338 if (!magic_cookie[0])
240 { 339 {
241 magic_cookie[0] = magic_open (MAGIC_SYMLINK); 340 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
242 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME); 341 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
342 magic_load (magic_cookie[0], 0);
343 magic_load (magic_cookie[1], 0);
243 } 344 }
345
346 perlinterp_release ();
244 347
245 RETVAL = ix & 2 348 RETVAL = ix & 2
246 ? magic_buffer (magic_cookie[ix], data, len) 349 ? magic_buffer (magic_cookie[ix & 1], data, len)
247 : magic_file (magic_cookie[ix], data); 350 : magic_file (magic_cookie[ix & 1], data);
248 351
249 perlinterp_acquire (); 352 perlinterp_acquire ();
250} 353}
251 OUTPUT: 354 OUTPUT:
252 RETVAL 355 RETVAL
308 : angle); 411 : angle);
309 perlinterp_acquire (); 412 perlinterp_acquire ();
310 OUTPUT: 413 OUTPUT:
311 RETVAL 414 RETVAL
312 415
416const char *
417filetype (SV *image_data)
418 CODE:
419{
420 STRLEN data_len;
421 U8 *data = SvPVbyte (image_data, data_len);
422 static const unsigned char jxl_header[] = {
423 0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a
424 };
425
426 if (data_len >= 20
427 && data[0] == 0xff
428 && data[1] == 0xd8
429 && data[2] == 0xff)
430 RETVAL = "image/jpeg";
431 else if (data_len >= 12
432 && data[ 0] == (U8)'R'
433 && data[ 1] == (U8)'I'
434 && data[ 2] == (U8)'F'
435 && data[ 3] == (U8)'F'
436 && data[ 8] == (U8)'W'
437 && data[ 9] == (U8)'E'
438 && data[10] == (U8)'B'
439 && data[11] == (U8)'P')
440 RETVAL = "image/webp";
441 else if (data_len >= 16
442 && data[ 0] == 0x89
443 && data[ 1] == (U8)'P'
444 && data[ 2] == (U8)'N'
445 && data[ 3] == (U8)'G'
446 && data[ 4] == 0x0d
447 && data[ 5] == 0x0a
448 && data[ 6] == 0x1a
449 && data[ 7] == 0x0a)
450 RETVAL = "image/png";
451 else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0)
452 RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck
453 else if (data_len >= 2
454 && data[0] == 0xff
455 && data[1] == 0x0a)
456 RETVAL = "image/jxl";
457 else if (data_len >= 13
458 && data[0] == 'G'
459 && data[1] == 'I'
460 && data[2] == 'F'
461 && data[3] == '8'
462 //&& (data[4] == '7' || data[4] == '9')
463 && data[5] == 'a')
464 {
465 RETVAL = "image/gif";
466
467 // now see if its animated - we require the netscape application header for this
468 int ofs = 13;
469
470 if (data[10] & 0x80)
471 ofs += (1 << ((data[10] & 7) + 1)) * 3;
472
473 if (data_len >= ofs + 2 + 1 + 11)
474 {
475
476 // skip a graphic control extension block. we assume
477 // there is at most one such block - while the NAB
478 // has to come firstz, some files do not obey this
479 if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
480 ofs += 3 + data[ofs + 2] + 1;
481
482 if (data_len >= ofs + 2 + 1 + 11)
483 if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
484 RETVAL = "video/gif";
485 }
486 }
487
488 else
489 XSRETURN_UNDEF;
490}
491 OUTPUT:
492 RETVAL
493
313GdkPixbuf_noinc * 494GdkPixbuf_noinc *
314decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) 495decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
315 CODE: 496 CODE:
316{ 497{
317#if WEBP 498#if WEBP
318 guchar *data;
319 STRLEN data_size; 499 STRLEN data_size;
320 int alpha; 500 int alpha;
501 WebPData data;
502 WebPDemuxer *demux;
503 WebPIterator iter;
321 WebPDecoderConfig config; 504 WebPDecoderConfig config;
322 int inw, inh; 505 int inw, inh;
323 506
324 data = SvPVbyte (image_data, data_size); 507 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
508 data.size = data_size;
325 509
326 perlinterp_release (); 510 perlinterp_release ();
327 511
328 RETVAL = 0; 512 RETVAL = 0;
329 513
514 if (!(demux = WebPDemux (&data)))
515 goto err_demux;
516
517 if (!WebPDemuxGetFrame (demux, 1, &iter))
518 goto err_iter;
519
330 if (!WebPInitDecoderConfig (&config)) 520 if (!WebPInitDecoderConfig (&config))
331 goto err; 521 goto err_iter;
332 522
333 config.options.use_threads = 1; 523 config.options.use_threads = 1;
334 524
335 if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK) 525 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
336 goto err; 526 goto err_iter;
337 527
338 inw = config.input.width; 528 inw = config.input.width;
339 inh = config.input.height; 529 inh = config.input.height;
340 530
341 if (thumbnail) 531 if (thumbnail)
356 { 546 {
357 iw = inw; 547 iw = inw;
358 ih = inh; 548 ih = inh;
359 } 549 }
360 550
361 alpha = config.input.has_alpha; 551 alpha = !!config.input.has_alpha;
362 552
363 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih); 553 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
364 if (!RETVAL) 554 if (!RETVAL)
365 goto err; 555 goto err_iter;
366 556
367 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; 557 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
368 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); 558 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
369 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); 559 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
370 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); 560 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
371 config.output.is_external_memory = 1; 561 config.output.is_external_memory = 1;
372 562
373 if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK) 563 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
374 { 564 {
375 g_object_unref (RETVAL); 565 g_object_unref (RETVAL);
376 RETVAL = 0; 566 RETVAL = 0;
377 goto err; 567 goto err_iter;
378 } 568 }
379 569
380 err: 570 err_iter:
571 WebPDemuxReleaseIterator (&iter);
572 err_demux:
573 WebPDemuxDelete (demux);
574
381 perlinterp_acquire (); 575 perlinterp_acquire ();
382#else 576#else
383 croak ("load_webp: webp not enabled at compile time"); 577 croak ("load_webp: webp not enabled at compile time");
384#endif 578#endif
385} 579}
386 OUTPUT: 580 OUTPUT:
387 RETVAL 581 RETVAL
388 582
389GdkPixbuf_noinc * 583GdkPixbuf_noinc *
584decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
585 CODE:
586{
587#if JXL
588 JxlDecoder *dec;
589 JxlBasicInfo info;
590 const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data);
591 size_t avail_in = SvCUR (image_data);
592 const char *error = 0;
593 JxlDecoderStatus status;
594 void *runner = 0;
595
596 RETVAL = 0;
597
598 perlinterp_release ();
599
600 dec = JxlDecoderCreate (0);
601
602 error = "JxlDecoderCreate failed";
603 if (!dec)
604 goto done;
605
606 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
607
608 status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
609 error = "JxlDecoderSetParallelRunner failed";
610 if (status != JXL_DEC_SUCCESS)
611 goto done;
612
613 error = "JxlDecoderSubscribeEvents failed";
614 status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE);
615 if (status != JXL_DEC_SUCCESS)
616 goto done;
617
618 status = JxlDecoderSetInput (dec, next_in, avail_in);
619 error = "JxlDecoderSetInput failed";
620 if (status != JXL_DEC_SUCCESS)
621 goto done;
622
623 for (;;)
624 {
625 status = JxlDecoderProcessInput (dec);
626
627 switch (status)
628 {
629 case JXL_DEC_FULL_IMAGE:
630 error = 0;
631 goto done;
632
633 case JXL_DEC_ERROR:
634 error = "JxlDecoderProcessInput failed";
635 goto done;
636
637 case JXL_DEC_NEED_MORE_INPUT:
638 error = "incomplete file";
639 goto done;
640
641 case JXL_DEC_SUCCESS:
642 error = "incomplete decode";
643 goto done;
644
645 case JXL_DEC_BASIC_INFO:
646 {
647 status = JxlDecoderGetBasicInfo (dec, &info);
648 error = "JxlDecoderGetBasicInfo failed";
649 if (status != JXL_DEC_SUCCESS)
650 goto done;
651
652 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
653 error = "unable to allocate pixbuf";
654 if (!RETVAL)
655 goto done;
656
657 JxlPixelFormat format = {
658 info.alpha_bits ? 4 : 3,
659 JXL_TYPE_UINT8,
660 JXL_NATIVE_ENDIAN,
661 gdk_pixbuf_get_rowstride (RETVAL)
662 };
663
664 // cannot use gdk_pixbuf_get_byte_length because that does
665 // not return the size of the buffer, but the size of the buffer without
666 // the last padding bytes. the internal buffer is rowstride * ysize,
667 // and this is what the jxl decoder needs. none of this is documented
668 // in either library, of course.
669
670 status = JxlDecoderSetImageOutBuffer (
671 dec,
672 &format,
673 gdk_pixbuf_get_pixels (RETVAL),
674 gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
675 );
676 error = "JxlDecoderSetImageOutBuffer failed";
677 if (status != JXL_DEC_SUCCESS)
678 goto done;
679 }
680 break;
681
682 default:
683 error = "unexpected event";
684 goto done;
685 }
686 }
687
688 done:
689 if (dec)
690 JxlDecoderDestroy (dec);
691
692 if (runner)
693 JxlThreadParallelRunnerDestroy (runner);
694
695 perlinterp_acquire ();
696
697 if (error)
698 {
699 if (RETVAL)
700 g_object_unref (RETVAL);
701
702 croak ("load_jxl: %s (status %d)", error, status);
703 }
704#else
705 croak ("load_jxl: jpeg-xl not enabled at compile time");
706#endif
707}
708 OUTPUT:
709 RETVAL
710
711GdkPixbuf_noinc *
390load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0) 712decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
391 CODE: 713 CODE:
392{ 714{
393 struct jpeg_decompress_struct cinfo; 715 struct jpeg_decompress_struct cinfo;
394 struct jpg_err_mgr jerr; 716 struct jpg_err_mgr jerr;
395 guchar *data;
396 int rs; 717 int rs;
397 FILE *fp;
398 volatile GdkPixbuf *pb = 0; 718 volatile GdkPixbuf *pb = 0;
719 STRLEN data_len;
720 guchar *data = SvPVbyte (image_data, data_len);
399 721
400 RETVAL = 0; 722 RETVAL = 0;
401
402 fp = fopen (SvPVbyte_nolen (path), "rb");
403
404 if (!fp)
405 XSRETURN_UNDEF;
406 723
407 perlinterp_release (); 724 perlinterp_release ();
408 725
409 cinfo.err = jpeg_std_error (&jerr.err); 726 cinfo.err = jpeg_std_error (&jerr.err);
410 727
411 jerr.err.error_exit = cv_error_exit; 728 jerr.err.error_exit = cv_error_exit;
412 jerr.err.output_message = cv_error_output; 729 jerr.err.output_message = cv_error_output;
413 730
414 if ((rs = setjmp (jerr.setjmp_buffer))) 731 if ((rs = setjmp (jerr.setjmp_buffer)))
415 { 732 {
416 fclose (fp);
417 jpeg_destroy_decompress (&cinfo); 733 jpeg_destroy_decompress (&cinfo);
418 734
419 if (pb) 735 if (pb)
420 g_object_unref ((gpointer)pb); 736 g_object_unref ((gpointer)pb);
421 737
422 perlinterp_acquire (); 738 perlinterp_acquire ();
423 XSRETURN_UNDEF; 739 XSRETURN_UNDEF;
424 } 740 }
425 741
742 if (!data_len)
743 longjmp (jerr.setjmp_buffer, 4);
744
426 jpeg_create_decompress (&cinfo); 745 jpeg_create_decompress (&cinfo);
746 cv_jpeg_mem_src (&cinfo, data, data_len);
427 747
428 jpeg_stdio_src (&cinfo, fp);
429 jpeg_read_header (&cinfo, TRUE); 748 jpeg_read_header (&cinfo, TRUE);
430 749
431 cinfo.dct_method = JDCT_DEFAULT; 750 cinfo.dct_method = JDCT_DEFAULT;
432 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 751 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
433 cinfo.do_block_smoothing = FALSE; 752 cinfo.do_block_smoothing = FALSE;
512 data += 4; 831 data += 4;
513 } 832 }
514 } 833 }
515 834
516 jpeg_finish_decompress (&cinfo); 835 jpeg_finish_decompress (&cinfo);
517 fclose (fp);
518 jpeg_destroy_decompress (&cinfo); 836 jpeg_destroy_decompress (&cinfo);
519 perlinterp_acquire (); 837 perlinterp_acquire ();
520} 838}
521 OUTPUT: 839 OUTPUT:
522 RETVAL 840 RETVAL
581 CODE: 899 CODE:
582{ 900{
583 STRLEN plen; 901 STRLEN plen;
584 U8 *path = (U8 *)SvPV (pathsv, plen); 902 U8 *path = (U8 *)SvPV (pathsv, plen);
585 U8 *pend = path + plen; 903 U8 *pend = path + plen;
586 U8 dst [plen * 6 * 3], *dstp = dst; 904 U8 dst [plen * 8 * 3], *dstp = dst;
587 905
588 while (path < pend) 906 while (path < pend)
589 { 907 {
590 U8 ch = *path; 908 U8 ch = *path;
591 909
593 *dstp++ = *path++; 911 *dstp++ = *path++;
594 else if (ch >= 'A' && ch <= 'Z') 912 else if (ch >= 'A' && ch <= 'Z')
595 *dstp++ = *path++ + ('a' - 'A'); 913 *dstp++ = *path++ + ('a' - 'A');
596 else if (ch >= '0' && ch <= '9') 914 else if (ch >= '0' && ch <= '9')
597 { 915 {
916 /* version sort, up to 8 digits */
598 STRLEN el, nl = 0; 917 STRLEN el, nl = 0;
599 while (*path >= '0' && *path <= '9' && path < pend) 918 while (*path >= '0' && *path <= '9' && path < pend)
600 path++, nl++; 919 path++, nl++;
601 920
602 for (el = nl; el < 6; el++) 921 for (el = nl; el < 8; el++)
603 *dstp++ = '0'; 922 *dstp++ = '0';
604 923
605 memcpy (dstp, path - nl, nl); 924 memcpy (dstp, path - nl, nl);
606 dstp += nl; 925 dstp += nl;
607 } 926 }

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