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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 1.56 by root, Wed Dec 27 17:48:16 2017 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
21#include "perlmulticore.h" 29#include "perlmulticore.h"
22 30
23#define IW 80 /* MUST match Schnauzer.pm! */ 31#define IW 80 /* MUST match Schnauzer.pm! */
24#define IH 60 /* MUST match Schnauzer.pm! */ 32#define IH 60 /* MUST match Schnauzer.pm! */
25 33
… …
28#define LINELENGTH 240 36#define LINELENGTH 240
29 37
30#define ELLIPSIS "\xe2\x80\xa6" 38#define ELLIPSIS "\xe2\x80\xa6"
31 39
32typedef char *octet_string; 40typedef char *octet_string;
41
42static magic_t magic_cookie[2]; /* !mime, mime */
33 43
34struct jpg_err_mgr 44struct jpg_err_mgr
35{ 45{
36 struct jpeg_error_mgr err; 46 struct jpeg_error_mgr err;
37 jmp_buf setjmp_buffer; 47 jmp_buf setjmp_buffer;
… …
191 201
192 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 202 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
193} 203}
194 204
195///////////////////////////////////////////////////////////////////////////// 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 ERREXIT (cinfo, JERR_INPUT_EMPTY);
219
220 return TRUE;
221}
222
223static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
224{
225 if (num_bytes > 0)
226 {
227 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
228
229 src->next_input_byte += num_bytes;
230 src->bytes_in_buffer -= num_bytes;
231 }
232}
233
234static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
235{
236 struct jpeg_source_mgr *src;
237
238 if (!cinfo->src)
239 cinfo->src = (struct jpeg_source_mgr *)
240 (*cinfo->mem->alloc_small) (
241 (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
242 );
243
244 src = (struct jpeg_source_mgr *)cinfo->src;
245 src->init_source = cv_ms_init;
246 src->fill_input_buffer = cv_ms_fill;
247 src->skip_input_data = cv_ms_skip;
248 src->resync_to_restart = jpeg_resync_to_restart;
249 src->term_source = cv_ms_term;
250 src->next_input_byte = (JOCTET *)buf;
251 src->bytes_in_buffer = buflen;
252}
253
254/////////////////////////////////////////////////////////////////////////////
196 255
197MODULE = Gtk2::CV PACKAGE = Gtk2::CV 256MODULE = Gtk2::CV PACKAGE = Gtk2::CV
198 257
199PROTOTYPES: ENABLE 258PROTOTYPES: ENABLE
200 259
260# calculate the common prefix length of two strings
201# missing function in perl. really :) 261# missing function in perl. really :)
202int 262int
203common_prefix_length (a, b) 263common_prefix_length (a, b)
204 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 264 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
205 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 265 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
… …
214 274
215 OUTPUT: 275 OUTPUT:
216 RETVAL 276 RETVAL
217 277
218const char * 278const char *
219magic (octet_string path) 279magic (SV *path_or_data)
280 ALIAS:
281 magic = 0
282 magic_mime = 1
283 magic_buffer = 2
284 magic_buffer_mime = 3
220 CODE: 285 CODE:
221{ 286{
222 static magic_t cookie; 287 STRLEN len;
288 char *data = SvPVbyte (path_or_data, len);
223 289
224 if (!cookie) 290 if (!magic_cookie[0])
225 { 291 {
226 cookie = magic_open (MAGIC_SYMLINK); 292 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
227 293 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
228 if (cookie)
229 magic_load (cookie, 0); 294 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); 295 magic_load (magic_cookie[1], 0);
251 else
252 XSRETURN_UNDEF;
253 } 296 }
254 297
255 perlinterp_release (); 298 perlinterp_release ();
256 RETVAL = magic_file (cookie, path); 299
300 RETVAL = ix & 2
301 ? magic_buffer (magic_cookie[ix & 1], data, len)
302 : magic_file (magic_cookie[ix & 1], data);
303
257 perlinterp_acquire (); 304 perlinterp_acquire ();
258} 305}
259 OUTPUT: 306 OUTPUT:
260 RETVAL 307 RETVAL
261 308
… …
316 : angle); 363 : angle);
317 perlinterp_acquire (); 364 perlinterp_acquire ();
318 OUTPUT: 365 OUTPUT:
319 RETVAL 366 RETVAL
320 367
368const char *
369filetype (SV *image_data)
370 CODE:
371{
372 STRLEN data_len;
373 U8 *data = SvPVbyte (image_data, data_len);
374
375 if (data_len >= 20
376 && data[0] == 0xff
377 && data[1] == 0xd8
378 && data[2] == 0xff)
379 RETVAL = "jpg";
380 else if (data_len >= 12
381 && data[ 0] == (U8)'R'
382 && data[ 1] == (U8)'I'
383 && data[ 2] == (U8)'F'
384 && data[ 3] == (U8)'F'
385 && data[ 8] == (U8)'W'
386 && data[ 9] == (U8)'E'
387 && data[10] == (U8)'B'
388 && data[11] == (U8)'P')
389 RETVAL = "webp";
390 else if (data_len >= 16
391 && data[ 0] == 0x89
392 && data[ 1] == (U8)'P'
393 && data[ 2] == (U8)'N'
394 && data[ 3] == (U8)'G'
395 && data[ 4] == 0x0d
396 && data[ 5] == 0x0a
397 && data[ 6] == 0x1a
398 && data[ 7] == 0x0a)
399 RETVAL = "png";
400 else
401 RETVAL = "other";
402}
403 OUTPUT:
404 RETVAL
405
321GdkPixbuf_noinc * 406GdkPixbuf_noinc *
407decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
408 CODE:
409{
410#if WEBP
411 STRLEN data_size;
412 int alpha;
413 WebPData data;
414 WebPDemuxer *demux;
415 WebPIterator iter;
416 WebPDecoderConfig config;
417 int inw, inh;
418
419 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
420 data.size = data_size;
421
422 perlinterp_release ();
423
424 RETVAL = 0;
425
426 if (!(demux = WebPDemux (&data)))
427 goto err_demux;
428
429 if (!WebPDemuxGetFrame (demux, 1, &iter))
430 goto err_iter;
431
432 if (!WebPInitDecoderConfig (&config))
433 goto err_iter;
434
435 config.options.use_threads = 1;
436
437 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
438 goto err_iter;
439
440 inw = config.input.width;
441 inh = config.input.height;
442
443 if (thumbnail)
444 {
445 if (inw * ih > inh * iw)
446 ih = (iw * inh + inw - 1) / inw;
447 else
448 iw = (ih * inw + inh - 1) / inh;
449
450 config.options.bypass_filtering = 1;
451 config.options.no_fancy_upsampling = 1;
452
453 config.options.use_scaling = 1;
454 config.options.scaled_width = iw;
455 config.options.scaled_height = ih;
456 }
457 else
458 {
459 iw = inw;
460 ih = inh;
461 }
462
463 alpha = !!config.input.has_alpha;
464
465 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
466 if (!RETVAL)
467 goto err_iter;
468
469 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
470 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
471 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
472 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
473 config.output.is_external_memory = 1;
474
475 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
476 {
477 g_object_unref (RETVAL);
478 RETVAL = 0;
479 goto err_iter;
480 }
481
482 err_iter:
483 WebPDemuxReleaseIterator (&iter);
484 err_demux:
485 WebPDemuxDelete (demux);
486
487 perlinterp_acquire ();
488#else
489 croak ("load_webp: webp not enabled at compile time");
490#endif
491}
492 OUTPUT:
493 RETVAL
494
495GdkPixbuf_noinc *
322load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0) 496decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
323 CODE: 497 CODE:
324{ 498{
325 struct jpeg_decompress_struct cinfo; 499 struct jpeg_decompress_struct cinfo;
326 struct jpg_err_mgr jerr; 500 struct jpg_err_mgr jerr;
327 guchar *data;
328 int rs; 501 int rs;
329 FILE *fp;
330 volatile GdkPixbuf *pb = 0; 502 volatile GdkPixbuf *pb = 0;
503 STRLEN data_len;
504 guchar *data = SvPVbyte (image_data, data_len);
331 505
332 RETVAL = 0; 506 RETVAL = 0;
333
334 fp = fopen (SvPVbyte_nolen (path), "rb");
335
336 if (!fp)
337 XSRETURN_UNDEF;
338 507
339 perlinterp_release (); 508 perlinterp_release ();
340 509
341 cinfo.err = jpeg_std_error (&jerr.err); 510 cinfo.err = jpeg_std_error (&jerr.err);
342 511
343 jerr.err.error_exit = cv_error_exit; 512 jerr.err.error_exit = cv_error_exit;
344 jerr.err.output_message = cv_error_output; 513 jerr.err.output_message = cv_error_output;
345 514
346 if ((rs = setjmp (jerr.setjmp_buffer))) 515 if ((rs = setjmp (jerr.setjmp_buffer)))
347 { 516 {
348 fclose (fp);
349 jpeg_destroy_decompress (&cinfo); 517 jpeg_destroy_decompress (&cinfo);
350 518
351 if (pb) 519 if (pb)
352 g_object_unref ((gpointer)pb); 520 g_object_unref ((gpointer)pb);
353 521
354 perlinterp_acquire (); 522 perlinterp_acquire ();
355 XSRETURN_UNDEF; 523 XSRETURN_UNDEF;
356 } 524 }
357 525
358 jpeg_create_decompress (&cinfo); 526 jpeg_create_decompress (&cinfo);
527 cv_jpeg_mem_src (&cinfo, data, data_len);
359 528
360 jpeg_stdio_src (&cinfo, fp);
361 jpeg_read_header (&cinfo, TRUE); 529 jpeg_read_header (&cinfo, TRUE);
362 530
363 cinfo.dct_method = JDCT_DEFAULT; 531 cinfo.dct_method = JDCT_DEFAULT;
364 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 532 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
365 cinfo.do_block_smoothing = FALSE; 533 cinfo.do_block_smoothing = FALSE;
… …
444 data += 4; 612 data += 4;
445 } 613 }
446 } 614 }
447 615
448 jpeg_finish_decompress (&cinfo); 616 jpeg_finish_decompress (&cinfo);
449 fclose (fp);
450 jpeg_destroy_decompress (&cinfo); 617 jpeg_destroy_decompress (&cinfo);
451 perlinterp_acquire (); 618 perlinterp_acquire ();
452} 619}
453 OUTPUT: 620 OUTPUT:
454 RETVAL 621 RETVAL

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