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Comparing CV/CV.xs (file contents):
Revision 1.54 by root, Sat Dec 23 08:04:48 2017 UTC vs.
Revision 1.70 by root, Thu Jun 8 15:42:03 2023 UTC

… …
24#if WEBP 24#if WEBP
25#include <webp/demux.h> 25#include <webp/demux.h>
26#include <webp/decode.h> 26#include <webp/decode.h>
27#endif 27#endif
28 28
29#if JXL
30#include <jxl/decode.h>
31#include "jxl/thread_parallel_runner.h"
32#endif
33
29#include "perlmulticore.h" 34#include "perlmulticore.h"
30 35
31#define IW 80 /* MUST match Schnauzer.pm! */ 36#define IW 80 /* MUST match Schnauzer.pm! */
32#define IH 60 /* MUST match Schnauzer.pm! */ 37#define IH 60 /* MUST match Schnauzer.pm! */
33
34#define RAND (seed = (seed + 7141) * 54773 % 134456)
35 38
36#define LINELENGTH 240 39#define LINELENGTH 240
37 40
38#define ELLIPSIS "\xe2\x80\xa6" 41#define ELLIPSIS "\xe2\x80\xa6"
39 42
… …
201 204
202 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 205 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
203} 206}
204 207
205///////////////////////////////////////////////////////////////////////////// 208/////////////////////////////////////////////////////////////////////////////
209// memory source for libjpeg
206 210
207static void cv_ms_init (j_decompress_ptr cinfo) 211static void cv_ms_init (j_decompress_ptr cinfo)
208{ 212{
209} 213}
210 214
… …
212{ 216{
213} 217}
214 218
215static boolean cv_ms_fill (j_decompress_ptr cinfo) 219static boolean cv_ms_fill (j_decompress_ptr cinfo)
216{ 220{
217 ERREXIT (cinfo, JERR_INPUT_EMPTY); 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);
218 231
219 return TRUE; 232 return TRUE;
220} 233}
221 234
222static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes) 235static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
223{ 236{
224 if (num_bytes > 0)
225 {
226 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; 237 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
227 238
228 src->next_input_byte += num_bytes; 239 src->next_input_byte += num_bytes;
229 src->bytes_in_buffer -= num_bytes; 240 src->bytes_in_buffer -= num_bytes;
230 }
231} 241}
232 242
233static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen) 243static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
234{ 244{
235 struct jpeg_source_mgr *src; 245 struct jpeg_source_mgr *src;
… …
250 src->bytes_in_buffer = buflen; 260 src->bytes_in_buffer = buflen;
251} 261}
252 262
253///////////////////////////////////////////////////////////////////////////// 263/////////////////////////////////////////////////////////////////////////////
254 264
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/////////////////////////////////////////////////////////////////////////////
303
255MODULE = Gtk2::CV PACKAGE = Gtk2::CV 304MODULE = Gtk2::CV PACKAGE = Gtk2::CV
256 305
257PROTOTYPES: ENABLE 306PROTOTYPES: ENABLE
258 307
308void
309_exit (int code)
310
311# calculate the common prefix length of two strings
259# missing function in perl. really :) 312# missing function in perl. really :)
260int 313int
261common_prefix_length (a, b) 314common_prefix_length (a, b)
262 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 315 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
263 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 316 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
… …
268 { 321 {
269 RETVAL += (*a & 0xc0) != 0x80; 322 RETVAL += (*a & 0xc0) != 0x80;
270 a++, b++; 323 a++, b++;
271 } 324 }
272 325
326 OUTPUT:
327 RETVAL
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++;
273 OUTPUT: 337 OUTPUT:
274 RETVAL 338 RETVAL
275 339
276const char * 340const char *
277magic (SV *path_or_data) 341magic (SV *path_or_data)
… …
367filetype (SV *image_data) 431filetype (SV *image_data)
368 CODE: 432 CODE:
369{ 433{
370 STRLEN data_len; 434 STRLEN data_len;
371 U8 *data = SvPVbyte (image_data, 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 };
372 439
373 if (data_len >= 20 440 if (data_len >= 20
374 && data[0] == 0xff 441 && data[0] == 0xff
375 && data[1] == 0xd8 442 && data[1] == 0xd8
376 && data[2] == 0xff) 443 && data[2] == 0xff)
377 RETVAL = "jpg"; 444 RETVAL = "image/jpeg";
378 else if (data_len >= 12 445 else if (data_len >= 12
379 && data[ 0] == (U8)'R' 446 && data[ 0] == (U8)'R'
380 && data[ 1] == (U8)'I' 447 && data[ 1] == (U8)'I'
381 && data[ 2] == (U8)'F' 448 && data[ 2] == (U8)'F'
382 && data[ 3] == (U8)'F' 449 && data[ 3] == (U8)'F'
383 && data[ 8] == (U8)'W' 450 && data[ 8] == (U8)'W'
384 && data[ 9] == (U8)'E' 451 && data[ 9] == (U8)'E'
385 && data[10] == (U8)'B' 452 && data[10] == (U8)'B'
386 && data[11] == (U8)'P') 453 && data[11] == (U8)'P')
387 RETVAL = "webp"; 454 RETVAL = "image/webp";
388 else if (data_len >= 16 455 else if (data_len >= 16
389 && data[ 0] == 0x89 456 && data[ 0] == 0x89
390 && data[ 1] == (U8)'P' 457 && data[ 1] == (U8)'P'
391 && data[ 2] == (U8)'N' 458 && data[ 2] == (U8)'N'
392 && data[ 3] == (U8)'G' 459 && data[ 3] == (U8)'G'
393 && data[ 4] == 0x0d 460 && data[ 4] == 0x0d
394 && data[ 5] == 0x0a 461 && data[ 5] == 0x0a
395 && data[ 6] == 0x1a 462 && data[ 6] == 0x1a
396 && data[ 7] == 0x0a) 463 && data[ 7] == 0x0a)
397 RETVAL = "png"; 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
398 else 516 else
399 RETVAL = "other"; 517 XSRETURN_UNDEF;
400} 518}
401 OUTPUT: 519 OUTPUT:
402 RETVAL 520 RETVAL
403 521
404GdkPixbuf_noinc * 522GdkPixbuf_noinc *
… …
478 } 596 }
479 597
480 err_iter: 598 err_iter:
481 WebPDemuxReleaseIterator (&iter); 599 WebPDemuxReleaseIterator (&iter);
482 err_demux: 600 err_demux:
601 WebPDemuxDelete (demux);
483 602
484 perlinterp_acquire (); 603 perlinterp_acquire ();
485#else 604#else
486 croak ("load_webp: webp not enabled at compile time"); 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");
487#endif 742#endif
488} 743}
489 OUTPUT: 744 OUTPUT:
490 RETVAL 745 RETVAL
491 746
… …
517 g_object_unref ((gpointer)pb); 772 g_object_unref ((gpointer)pb);
518 773
519 perlinterp_acquire (); 774 perlinterp_acquire ();
520 XSRETURN_UNDEF; 775 XSRETURN_UNDEF;
521 } 776 }
777
778 if (!data_len)
779 longjmp (jerr.setjmp_buffer, 4);
522 780
523 jpeg_create_decompress (&cinfo); 781 jpeg_create_decompress (&cinfo);
524 cv_jpeg_mem_src (&cinfo, data, data_len); 782 cv_jpeg_mem_src (&cinfo, data, data_len);
525 783
526 jpeg_read_header (&cinfo, TRUE); 784 jpeg_read_header (&cinfo, TRUE);
… …
677 CODE: 935 CODE:
678{ 936{
679 STRLEN plen; 937 STRLEN plen;
680 U8 *path = (U8 *)SvPV (pathsv, plen); 938 U8 *path = (U8 *)SvPV (pathsv, plen);
681 U8 *pend = path + plen; 939 U8 *pend = path + plen;
682 U8 dst [plen * 6 * 3], *dstp = dst; 940 U8 dst [plen * 8 * 3], *dstp = dst;
683 941
684 while (path < pend) 942 while (path < pend)
685 { 943 {
686 U8 ch = *path; 944 U8 ch = *path;
687 945
… …
689 *dstp++ = *path++; 947 *dstp++ = *path++;
690 else if (ch >= 'A' && ch <= 'Z') 948 else if (ch >= 'A' && ch <= 'Z')
691 *dstp++ = *path++ + ('a' - 'A'); 949 *dstp++ = *path++ + ('a' - 'A');
692 else if (ch >= '0' && ch <= '9') 950 else if (ch >= '0' && ch <= '9')
693 { 951 {
952 /* version sort, up to 8 digits */
694 STRLEN el, nl = 0; 953 STRLEN el, nl = 0;
695 while (*path >= '0' && *path <= '9' && path < pend) 954 while (*path >= '0' && *path <= '9' && path < pend)
696 path++, nl++; 955 path++, nl++;
697 956
698 for (el = nl; el < 6; el++) 957 for (el = nl; el < 8; el++)
699 *dstp++ = '0'; 958 *dstp++ = '0';
700 959
701 memcpy (dstp, path - nl, nl); 960 memcpy (dstp, path - nl, nl);
702 dstp += nl; 961 dstp += nl;
703 } 962 }

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