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Comparing CV/CV.xs (file contents):
Revision 1.55 by root, Sat Dec 23 08:05:32 2017 UTC vs.
Revision 1.63 by root, Sun Nov 28 23:26:51 2021 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
308# calculate the common prefix length of two strings
259# missing function in perl. really :) 309# missing function in perl. really :)
260int 310int
261common_prefix_length (a, b) 311common_prefix_length (a, b)
262 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 312 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
263 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 313 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
… …
367filetype (SV *image_data) 417filetype (SV *image_data)
368 CODE: 418 CODE:
369{ 419{
370 STRLEN data_len; 420 STRLEN data_len;
371 U8 *data = SvPVbyte (image_data, 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 };
372 425
373 if (data_len >= 20 426 if (data_len >= 20
374 && data[0] == 0xff 427 && data[0] == 0xff
375 && data[1] == 0xd8 428 && data[1] == 0xd8
376 && data[2] == 0xff) 429 && data[2] == 0xff)
377 RETVAL = "jpg"; 430 RETVAL = "image/jpeg";
378 else if (data_len >= 12 431 else if (data_len >= 12
379 && data[ 0] == (U8)'R' 432 && data[ 0] == (U8)'R'
380 && data[ 1] == (U8)'I' 433 && data[ 1] == (U8)'I'
381 && data[ 2] == (U8)'F' 434 && data[ 2] == (U8)'F'
382 && data[ 3] == (U8)'F' 435 && data[ 3] == (U8)'F'
383 && data[ 8] == (U8)'W' 436 && data[ 8] == (U8)'W'
384 && data[ 9] == (U8)'E' 437 && data[ 9] == (U8)'E'
385 && data[10] == (U8)'B' 438 && data[10] == (U8)'B'
386 && data[11] == (U8)'P') 439 && data[11] == (U8)'P')
387 RETVAL = "webp"; 440 RETVAL = "image/webp";
388 else if (data_len >= 16 441 else if (data_len >= 16
389 && data[ 0] == 0x89 442 && data[ 0] == 0x89
390 && data[ 1] == (U8)'P' 443 && data[ 1] == (U8)'P'
391 && data[ 2] == (U8)'N' 444 && data[ 2] == (U8)'N'
392 && data[ 3] == (U8)'G' 445 && data[ 3] == (U8)'G'
393 && data[ 4] == 0x0d 446 && data[ 4] == 0x0d
394 && data[ 5] == 0x0a 447 && data[ 5] == 0x0a
395 && data[ 6] == 0x1a 448 && data[ 6] == 0x1a
396 && data[ 7] == 0x0a) 449 && data[ 7] == 0x0a)
397 RETVAL = "png"; 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
398 else 488 else
399 RETVAL = "other"; 489 XSRETURN_UNDEF;
400} 490}
401 OUTPUT: 491 OUTPUT:
402 RETVAL 492 RETVAL
403 493
404GdkPixbuf_noinc * 494GdkPixbuf_noinc *
… …
489} 579}
490 OUTPUT: 580 OUTPUT:
491 RETVAL 581 RETVAL
492 582
493GdkPixbuf_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 struct bmff_box box;
596
597 RETVAL = 0;
598
599 perlinterp_release ();
600
601 dec = JxlDecoderCreate (0);
602
603 error = "JxlDecoderCreate failed";
604 if (!dec)
605 goto done;
606
607 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
608
609 status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
610 error = "JxlDecoderSetParallelRunner failed";
611 if (status != JXL_DEC_SUCCESS)
612 goto done;
613
614 error = "JxlDecoderSubscribeEvents failed";
615 status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE);
616 if (status != JXL_DEC_SUCCESS)
617 goto done;
618
619 status = JxlDecoderSetInput (dec, next_in, avail_in);
620 error = "JxlDecoderSetInput failed";
621 if (status != JXL_DEC_SUCCESS)
622 goto done;
623
624 for (;;)
625 {
626 status = JxlDecoderProcessInput (dec);
627
628 switch (status)
629 {
630 case JXL_DEC_FULL_IMAGE:
631 error = 0;
632 goto done;
633
634 case JXL_DEC_ERROR:
635 error = "JxlDecoderProcessInput failed";
636 goto done;
637
638 case JXL_DEC_NEED_MORE_INPUT:
639 error = "incomplete file";
640 goto done;
641
642 case JXL_DEC_SUCCESS:
643 error = "incomplete decode";
644 goto done;
645
646 case JXL_DEC_BASIC_INFO:
647 {
648 status = JxlDecoderGetBasicInfo (dec, &info);
649 error = "JxlDecoderGetBasicInfo failed";
650 if (status != JXL_DEC_SUCCESS)
651 goto done;
652
653 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
654 error = "unable to allocate pixbuf";
655 if (!RETVAL)
656 goto done;
657
658 JxlPixelFormat format = {
659 info.alpha_bits ? 4 : 3,
660 JXL_TYPE_UINT8,
661 JXL_NATIVE_ENDIAN,
662 gdk_pixbuf_get_rowstride (RETVAL)
663 };
664
665 // cannot use gdk_pixbuf_get_byte_length because that does
666 // not return the size of the buffer, but the size of the buffer without
667 // the last padding bytes. the internal buffer is rowstride * ysize,
668 // and this is what the jxl decoder needs. none of this is documented
669 // in either library, of course.
670
671 status = JxlDecoderSetImageOutBuffer (
672 dec,
673 &format,
674 gdk_pixbuf_get_pixels (RETVAL),
675 gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
676 );
677 error = "JxlDecoderSetImageOutBuffer failed";
678 if (status != JXL_DEC_SUCCESS)
679 goto done;
680 }
681 break;
682
683 default:
684 error = "unexpected event";
685 goto done;
686 }
687 }
688
689 done:
690 if (dec)
691 JxlDecoderDestroy (dec);
692
693 if (runner)
694 JxlThreadParallelRunnerDestroy (runner);
695
696 perlinterp_acquire ();
697
698 if (error)
699 {
700 if (RETVAL)
701 g_object_unref (RETVAL);
702
703 croak ("load_jxl: %s (status %d)", error, status);
704 }
705#else
706 croak ("load_jxl: jpeg-xl not enabled at compile time");
707#endif
708}
709 OUTPUT:
710 RETVAL
711
712GdkPixbuf_noinc *
494decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) 713decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
495 CODE: 714 CODE:
496{ 715{
497 struct jpeg_decompress_struct cinfo; 716 struct jpeg_decompress_struct cinfo;
498 struct jpg_err_mgr jerr; 717 struct jpg_err_mgr jerr;
… …
518 g_object_unref ((gpointer)pb); 737 g_object_unref ((gpointer)pb);
519 738
520 perlinterp_acquire (); 739 perlinterp_acquire ();
521 XSRETURN_UNDEF; 740 XSRETURN_UNDEF;
522 } 741 }
742
743 if (!data_len)
744 longjmp (jerr.setjmp_buffer, 4);
523 745
524 jpeg_create_decompress (&cinfo); 746 jpeg_create_decompress (&cinfo);
525 cv_jpeg_mem_src (&cinfo, data, data_len); 747 cv_jpeg_mem_src (&cinfo, data, data_len);
526 748
527 jpeg_read_header (&cinfo, TRUE); 749 jpeg_read_header (&cinfo, TRUE);
… …
678 CODE: 900 CODE:
679{ 901{
680 STRLEN plen; 902 STRLEN plen;
681 U8 *path = (U8 *)SvPV (pathsv, plen); 903 U8 *path = (U8 *)SvPV (pathsv, plen);
682 U8 *pend = path + plen; 904 U8 *pend = path + plen;
683 U8 dst [plen * 6 * 3], *dstp = dst; 905 U8 dst [plen * 8 * 3], *dstp = dst;
684 906
685 while (path < pend) 907 while (path < pend)
686 { 908 {
687 U8 ch = *path; 909 U8 ch = *path;
688 910
… …
690 *dstp++ = *path++; 912 *dstp++ = *path++;
691 else if (ch >= 'A' && ch <= 'Z') 913 else if (ch >= 'A' && ch <= 'Z')
692 *dstp++ = *path++ + ('a' - 'A'); 914 *dstp++ = *path++ + ('a' - 'A');
693 else if (ch >= '0' && ch <= '9') 915 else if (ch >= '0' && ch <= '9')
694 { 916 {
917 /* version sort, up to 8 digits */
695 STRLEN el, nl = 0; 918 STRLEN el, nl = 0;
696 while (*path >= '0' && *path <= '9' && path < pend) 919 while (*path >= '0' && *path <= '9' && path < pend)
697 path++, nl++; 920 path++, nl++;
698 921
699 for (el = nl; el < 6; el++) 922 for (el = nl; el < 8; el++)
700 *dstp++ = '0'; 923 *dstp++ = '0';
701 924
702 memcpy (dstp, path - nl, nl); 925 memcpy (dstp, path - nl, nl);
703 dstp += nl; 926 dstp += nl;
704 } 927 }

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