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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 1.57 by root, Mon Jul 30 22:55:46 2018 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
26#include "perlmulticore.h" 29#include "perlmulticore.h"
27 30
… …
198 201
199 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 202 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
200} 203}
201 204
202///////////////////////////////////////////////////////////////////////////// 205/////////////////////////////////////////////////////////////////////////////
206// memory source for libjpeg
207
208static void cv_ms_init (j_decompress_ptr cinfo)
209{
210}
211
212static void cv_ms_term (j_decompress_ptr cinfo)
213{
214}
215
216static boolean cv_ms_fill (j_decompress_ptr cinfo)
217{
218 // unexpected EOF, warn and generate fake EOI marker
219
220 WARNMS (cinfo, JWRN_JPEG_EOF);
221
222 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
223
224 static const JOCTET eoi[] = { 0xFF, JPEG_EOI };
225
226 src->next_input_byte = eoi;
227 src->bytes_in_buffer = sizeof (eoi);
228
229 return TRUE;
230}
231
232static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
233{
234 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
235
236 src->next_input_byte += num_bytes;
237 src->bytes_in_buffer -= num_bytes;
238}
239
240static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
241{
242 struct jpeg_source_mgr *src;
243
244 if (!cinfo->src)
245 cinfo->src = (struct jpeg_source_mgr *)
246 (*cinfo->mem->alloc_small) (
247 (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
248 );
249
250 src = (struct jpeg_source_mgr *)cinfo->src;
251 src->init_source = cv_ms_init;
252 src->fill_input_buffer = cv_ms_fill;
253 src->skip_input_data = cv_ms_skip;
254 src->resync_to_restart = jpeg_resync_to_restart;
255 src->term_source = cv_ms_term;
256 src->next_input_byte = (JOCTET *)buf;
257 src->bytes_in_buffer = buflen;
258}
259
260/////////////////////////////////////////////////////////////////////////////
203 261
204MODULE = Gtk2::CV PACKAGE = Gtk2::CV 262MODULE = Gtk2::CV PACKAGE = Gtk2::CV
205 263
206PROTOTYPES: ENABLE 264PROTOTYPES: ENABLE
207 265
266# calculate the common prefix length of two strings
208# missing function in perl. really :) 267# missing function in perl. really :)
209int 268int
210common_prefix_length (a, b) 269common_prefix_length (a, b)
211 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 270 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
212 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 271 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
… …
232 CODE: 291 CODE:
233{ 292{
234 STRLEN len; 293 STRLEN len;
235 char *data = SvPVbyte (path_or_data, len); 294 char *data = SvPVbyte (path_or_data, len);
236 295
237 perlinterp_release ();
238
239 if (!magic_cookie[0]) 296 if (!magic_cookie[0])
240 { 297 {
241 magic_cookie[0] = magic_open (MAGIC_SYMLINK); 298 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
242 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME); 299 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
300 magic_load (magic_cookie[0], 0);
301 magic_load (magic_cookie[1], 0);
243 } 302 }
303
304 perlinterp_release ();
244 305
245 RETVAL = ix & 2 306 RETVAL = ix & 2
246 ? magic_buffer (magic_cookie[ix], data, len) 307 ? magic_buffer (magic_cookie[ix & 1], data, len)
247 : magic_file (magic_cookie[ix], data); 308 : magic_file (magic_cookie[ix & 1], data);
248 309
249 perlinterp_acquire (); 310 perlinterp_acquire ();
250} 311}
251 OUTPUT: 312 OUTPUT:
252 RETVAL 313 RETVAL
… …
308 : angle); 369 : angle);
309 perlinterp_acquire (); 370 perlinterp_acquire ();
310 OUTPUT: 371 OUTPUT:
311 RETVAL 372 RETVAL
312 373
374const char *
375filetype (SV *image_data)
376 CODE:
377{
378 STRLEN data_len;
379 U8 *data = SvPVbyte (image_data, data_len);
380
381 if (data_len >= 20
382 && data[0] == 0xff
383 && data[1] == 0xd8
384 && data[2] == 0xff)
385 RETVAL = "jpg";
386 else if (data_len >= 12
387 && data[ 0] == (U8)'R'
388 && data[ 1] == (U8)'I'
389 && data[ 2] == (U8)'F'
390 && data[ 3] == (U8)'F'
391 && data[ 8] == (U8)'W'
392 && data[ 9] == (U8)'E'
393 && data[10] == (U8)'B'
394 && data[11] == (U8)'P')
395 RETVAL = "webp";
396 else if (data_len >= 16
397 && data[ 0] == 0x89
398 && data[ 1] == (U8)'P'
399 && data[ 2] == (U8)'N'
400 && data[ 3] == (U8)'G'
401 && data[ 4] == 0x0d
402 && data[ 5] == 0x0a
403 && data[ 6] == 0x1a
404 && data[ 7] == 0x0a)
405 RETVAL = "png";
406 else
407 RETVAL = "other";
408}
409 OUTPUT:
410 RETVAL
411
313GdkPixbuf_noinc * 412GdkPixbuf_noinc *
314decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) 413decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
315 CODE: 414 CODE:
316{ 415{
317#if WEBP 416#if WEBP
318 guchar *data;
319 STRLEN data_size; 417 STRLEN data_size;
320 int alpha; 418 int alpha;
419 WebPData data;
420 WebPDemuxer *demux;
421 WebPIterator iter;
321 WebPDecoderConfig config; 422 WebPDecoderConfig config;
322 int inw, inh; 423 int inw, inh;
323 424
324 data = SvPVbyte (image_data, data_size); 425 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
426 data.size = data_size;
325 427
326 perlinterp_release (); 428 perlinterp_release ();
327 429
328 RETVAL = 0; 430 RETVAL = 0;
329 431
432 if (!(demux = WebPDemux (&data)))
433 goto err_demux;
434
435 if (!WebPDemuxGetFrame (demux, 1, &iter))
436 goto err_iter;
437
330 if (!WebPInitDecoderConfig (&config)) 438 if (!WebPInitDecoderConfig (&config))
331 goto err; 439 goto err_iter;
332 440
333 config.options.use_threads = 1; 441 config.options.use_threads = 1;
334 442
335 if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK) 443 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
336 goto err; 444 goto err_iter;
337 445
338 inw = config.input.width; 446 inw = config.input.width;
339 inh = config.input.height; 447 inh = config.input.height;
340 448
341 if (thumbnail) 449 if (thumbnail)
… …
356 { 464 {
357 iw = inw; 465 iw = inw;
358 ih = inh; 466 ih = inh;
359 } 467 }
360 468
361 alpha = config.input.has_alpha; 469 alpha = !!config.input.has_alpha;
362 470
363 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih); 471 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
364 if (!RETVAL) 472 if (!RETVAL)
365 goto err; 473 goto err_iter;
366 474
367 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; 475 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
368 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); 476 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
369 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); 477 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
370 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); 478 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
371 config.output.is_external_memory = 1; 479 config.output.is_external_memory = 1;
372 480
373 if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK) 481 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
374 { 482 {
375 g_object_unref (RETVAL); 483 g_object_unref (RETVAL);
376 RETVAL = 0; 484 RETVAL = 0;
377 goto err; 485 goto err_iter;
378 } 486 }
379 487
380 err: 488 err_iter:
489 WebPDemuxReleaseIterator (&iter);
490 err_demux:
491 WebPDemuxDelete (demux);
492
381 perlinterp_acquire (); 493 perlinterp_acquire ();
382#else 494#else
383 croak ("load_webp: webp not enabled at compile time"); 495 croak ("load_webp: webp not enabled at compile time");
384#endif 496#endif
385} 497}
386 OUTPUT: 498 OUTPUT:
387 RETVAL 499 RETVAL
388 500
389GdkPixbuf_noinc * 501GdkPixbuf_noinc *
390load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0) 502decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
391 CODE: 503 CODE:
392{ 504{
393 struct jpeg_decompress_struct cinfo; 505 struct jpeg_decompress_struct cinfo;
394 struct jpg_err_mgr jerr; 506 struct jpg_err_mgr jerr;
395 guchar *data;
396 int rs; 507 int rs;
397 FILE *fp;
398 volatile GdkPixbuf *pb = 0; 508 volatile GdkPixbuf *pb = 0;
509 STRLEN data_len;
510 guchar *data = SvPVbyte (image_data, data_len);
399 511
400 RETVAL = 0; 512 RETVAL = 0;
401
402 fp = fopen (SvPVbyte_nolen (path), "rb");
403
404 if (!fp)
405 XSRETURN_UNDEF;
406 513
407 perlinterp_release (); 514 perlinterp_release ();
408 515
409 cinfo.err = jpeg_std_error (&jerr.err); 516 cinfo.err = jpeg_std_error (&jerr.err);
410 517
411 jerr.err.error_exit = cv_error_exit; 518 jerr.err.error_exit = cv_error_exit;
412 jerr.err.output_message = cv_error_output; 519 jerr.err.output_message = cv_error_output;
413 520
414 if ((rs = setjmp (jerr.setjmp_buffer))) 521 if ((rs = setjmp (jerr.setjmp_buffer)))
415 { 522 {
416 fclose (fp);
417 jpeg_destroy_decompress (&cinfo); 523 jpeg_destroy_decompress (&cinfo);
418 524
419 if (pb) 525 if (pb)
420 g_object_unref ((gpointer)pb); 526 g_object_unref ((gpointer)pb);
421 527
422 perlinterp_acquire (); 528 perlinterp_acquire ();
423 XSRETURN_UNDEF; 529 XSRETURN_UNDEF;
424 } 530 }
425 531
532 if (!data_len)
533 longjmp (jerr.setjmp_buffer, 4);
534
426 jpeg_create_decompress (&cinfo); 535 jpeg_create_decompress (&cinfo);
536 cv_jpeg_mem_src (&cinfo, data, data_len);
427 537
428 jpeg_stdio_src (&cinfo, fp);
429 jpeg_read_header (&cinfo, TRUE); 538 jpeg_read_header (&cinfo, TRUE);
430 539
431 cinfo.dct_method = JDCT_DEFAULT; 540 cinfo.dct_method = JDCT_DEFAULT;
432 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 541 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
433 cinfo.do_block_smoothing = FALSE; 542 cinfo.do_block_smoothing = FALSE;
… …
512 data += 4; 621 data += 4;
513 } 622 }
514 } 623 }
515 624
516 jpeg_finish_decompress (&cinfo); 625 jpeg_finish_decompress (&cinfo);
517 fclose (fp);
518 jpeg_destroy_decompress (&cinfo); 626 jpeg_destroy_decompress (&cinfo);
519 perlinterp_acquire (); 627 perlinterp_acquire ();
520} 628}
521 OUTPUT: 629 OUTPUT:
522 RETVAL 630 RETVAL

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