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Comparing CV/CV.xs (file contents):
Revision 1.43 by root, Sun May 3 08:16:47 2009 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
29#include "perlmulticore.h"
30
21#define IW 80 /* MUST match Schnauzer.pm! */ 31#define IW 80 /* MUST match Schnauzer.pm! */
22#define IH 60 /* MUST match Schnauzer.pm! */ 32#define IH 60 /* MUST match Schnauzer.pm! */
23 33
24#define RAND (seed = (seed + 7141) * 54773 % 134456) 34#define RAND (seed = (seed + 7141) * 54773 % 134456)
25 35
26#define LINELENGTH 240 36#define LINELENGTH 240
27 37
28#define ELLIPSIS "\xe2\x80\xa6" 38#define ELLIPSIS "\xe2\x80\xa6"
29 39
30typedef char *octet_string; 40typedef char *octet_string;
41
42static magic_t magic_cookie[2]; /* !mime, mime */
31 43
32struct jpg_err_mgr 44struct jpg_err_mgr
33{ 45{
34 struct jpeg_error_mgr err; 46 struct jpeg_error_mgr err;
35 jmp_buf setjmp_buffer; 47 jmp_buf setjmp_buffer;
36}; 48};
37 49
38static void 50static void
39cv_error_exit (j_common_ptr cinfo) 51cv_error_exit (j_common_ptr cinfo)
40{ 52{
53 cinfo->err->output_message (cinfo);
41 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); 54 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
42} 55}
43 56
44static void 57static void
45cv_error_output (j_common_ptr cinfo) 58cv_error_output (j_common_ptr cinfo)
46{ 59{
60 char msg[JMSG_LENGTH_MAX];
61
62 cinfo->err->format_message (cinfo, msg);
63
64 fprintf (stderr, "JPEG decoding error: %s\n", msg);
47 return; 65 return;
48} 66}
49 67
50static void 68static void
51rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, 69rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
148 if (!--a85_cnt) 166 if (!--a85_cnt)
149 { 167 {
150 a85_cnt = 4; 168 a85_cnt = 4;
151 if (a85_val) 169 if (a85_val)
152 { 170 {
153 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; 171 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
154 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; 172 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
155 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; 173 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
156 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; 174 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
157 a85_ptr[0] = (a85_val ) + 33; 175 a85_ptr[0] = (a85_val ) + 33;
158 176
159 a85_ptr += 5; 177 a85_ptr += 5;
160 } 178 }
183 201
184 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 202 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
185} 203}
186 204
187///////////////////////////////////////////////////////////////////////////// 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/////////////////////////////////////////////////////////////////////////////
188 255
189MODULE = Gtk2::CV PACKAGE = Gtk2::CV 256MODULE = Gtk2::CV PACKAGE = Gtk2::CV
190 257
191PROTOTYPES: ENABLE 258PROTOTYPES: ENABLE
192 259
260# calculate the common prefix length of two strings
193# missing function in perl. really :) 261# missing function in perl. really :)
194int 262int
195common_prefix_length (a, b) 263common_prefix_length (a, b)
196 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); 264 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
197 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); 265 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
206 274
207 OUTPUT: 275 OUTPUT:
208 RETVAL 276 RETVAL
209 277
210const char * 278const char *
211magic (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
212 CODE: 285 CODE:
213{ 286{
214 static magic_t cookie; 287 STRLEN len;
288 char *data = SvPVbyte (path_or_data, len);
215 289
216 if (!cookie) 290 if (!magic_cookie[0])
291 {
292 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
293 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
294 magic_load (magic_cookie[0], 0);
295 magic_load (magic_cookie[1], 0);
217 { 296 }
218 cookie = magic_open (MAGIC_NONE);
219 297
220 if (cookie) 298 perlinterp_release ();
221 magic_load (cookie, 0);
222 else
223 XSRETURN_UNDEF;
224 }
225 299
226 RETVAL = magic_file (cookie, path);
227}
228 OUTPUT:
229 RETVAL 300 RETVAL = ix & 2
301 ? magic_buffer (magic_cookie[ix & 1], data, len)
302 : magic_file (magic_cookie[ix & 1], data);
230 303
231const char * 304 perlinterp_acquire ();
232magic_mime (octet_string path)
233 CODE:
234{
235 static magic_t cookie;
236
237 if (!cookie)
238 {
239 cookie = magic_open (MAGIC_MIME);
240
241 if (cookie)
242 magic_load (cookie, 0);
243 else
244 XSRETURN_UNDEF;
245 }
246
247 RETVAL = magic_file (cookie, path);
248} 305}
249 OUTPUT: 306 OUTPUT:
250 RETVAL 307 RETVAL
251 308
252# missing/broken in Gtk2 perl module 309# missing/broken in Gtk2 perl module
268 RETVAL 325 RETVAL
269 326
270GdkPixbuf_noinc * 327GdkPixbuf_noinc *
271dealpha_expose (GdkPixbuf *pb) 328dealpha_expose (GdkPixbuf *pb)
272 CODE: 329 CODE:
330 perlinterp_release ();
273{ 331{
274 int w = gdk_pixbuf_get_width (pb); 332 int w = gdk_pixbuf_get_width (pb);
275 int h = gdk_pixbuf_get_height (pb); 333 int h = gdk_pixbuf_get_height (pb);
276 int bpp = gdk_pixbuf_get_n_channels (pb); 334 int bpp = gdk_pixbuf_get_n_channels (pb);
277 int x, y, i; 335 int x, y, i;
286 for (x = 0; x < w; x++) 344 for (x = 0; x < w; x++)
287 for (y = 0; y < h; y++) 345 for (y = 0; y < h; y++)
288 for (i = 0; i < 3; i++) 346 for (i = 0; i < 3; i++)
289 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 347 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
290} 348}
349 perlinterp_acquire ();
291 OUTPUT: 350 OUTPUT:
292 RETVAL 351 RETVAL
293 352
294GdkPixbuf_noinc * 353GdkPixbuf_noinc *
295rotate (GdkPixbuf *pb, int angle) 354rotate (GdkPixbuf *pb, int angle)
296 CODE: 355 CODE:
356 perlinterp_release ();
357 if (angle < 0)
358 angle += 360;
297 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 359 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
298 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 360 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
299 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 361 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
300 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 362 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
301 : angle); 363 : angle);
364 perlinterp_acquire ();
302 OUTPUT: 365 OUTPUT:
303 RETVAL 366 RETVAL
304 367
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
305GdkPixbuf_noinc * 406GdkPixbuf_noinc *
306load_jpeg (SV *path, int thumbnail=0) 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 *
496decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
307 CODE: 497 CODE:
308{ 498{
309 struct jpeg_decompress_struct cinfo; 499 struct jpeg_decompress_struct cinfo;
310 struct jpg_err_mgr jerr; 500 struct jpg_err_mgr jerr;
311 guchar *data;
312 int rs; 501 int rs;
313 FILE *fp;
314 volatile GdkPixbuf *pb = 0; 502 volatile GdkPixbuf *pb = 0;
503 STRLEN data_len;
504 guchar *data = SvPVbyte (image_data, data_len);
315 505
316 RETVAL = 0; 506 RETVAL = 0;
317 507
318 fp = fopen (SvPVbyte_nolen (path), "rb"); 508 perlinterp_release ();
319
320 if (!fp)
321 XSRETURN_UNDEF;
322 509
323 cinfo.err = jpeg_std_error (&jerr.err); 510 cinfo.err = jpeg_std_error (&jerr.err);
324 511
325 jerr.err.error_exit = cv_error_exit; 512 jerr.err.error_exit = cv_error_exit;
326 jerr.err.output_message = cv_error_output; 513 jerr.err.output_message = cv_error_output;
327 514
328 if ((rs = setjmp (jerr.setjmp_buffer))) 515 if ((rs = setjmp (jerr.setjmp_buffer)))
329 { 516 {
330 fclose (fp);
331 jpeg_destroy_decompress (&cinfo); 517 jpeg_destroy_decompress (&cinfo);
332 518
333 if (pb) 519 if (pb)
334 g_object_unref ((gpointer)pb); 520 g_object_unref ((gpointer)pb);
335 521
522 perlinterp_acquire ();
336 XSRETURN_UNDEF; 523 XSRETURN_UNDEF;
337 } 524 }
338 525
339 jpeg_create_decompress (&cinfo); 526 jpeg_create_decompress (&cinfo);
527 cv_jpeg_mem_src (&cinfo, data, data_len);
340 528
341 jpeg_stdio_src (&cinfo, fp);
342 jpeg_read_header (&cinfo, TRUE); 529 jpeg_read_header (&cinfo, TRUE);
343 530
344 cinfo.dct_method = JDCT_DEFAULT; 531 cinfo.dct_method = JDCT_DEFAULT;
345 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 */
346 cinfo.do_block_smoothing = FALSE; 533 cinfo.do_block_smoothing = FALSE;
356 { 543 {
357 cinfo.dct_method = JDCT_FASTEST; 544 cinfo.dct_method = JDCT_FASTEST;
358 cinfo.do_fancy_upsampling = FALSE; 545 cinfo.do_fancy_upsampling = FALSE;
359 546
360 while (cinfo.scale_denom < 8 547 while (cinfo.scale_denom < 8
361 && cinfo.output_width >= IW*4 548 && cinfo.output_width >= iw*4
362 && cinfo.output_height >= IH*4) 549 && cinfo.output_height >= ih*4)
363 { 550 {
364 cinfo.scale_denom <<= 1; 551 cinfo.scale_denom <<= 1;
365 jpeg_calc_output_dimensions (&cinfo); 552 jpeg_calc_output_dimensions (&cinfo);
366 } 553 }
367 } 554 }
368 555
556 if (cinfo.output_components != 3)
557 longjmp (jerr.setjmp_buffer, 3);
558
559 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
560 {
561 cinfo.out_color_space = JCS_CMYK;
562 cinfo.output_components = 4;
563 }
564
369 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 565 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
370 if (!RETVAL) 566 if (!RETVAL)
371 longjmp (jerr.setjmp_buffer, 2); 567 longjmp (jerr.setjmp_buffer, 2);
372 568
373 data = gdk_pixbuf_get_pixels (RETVAL); 569 data = gdk_pixbuf_get_pixels (RETVAL);
374 rs = gdk_pixbuf_get_rowstride (RETVAL); 570 rs = gdk_pixbuf_get_rowstride (RETVAL);
375
376 if (cinfo.output_components != 3)
377 longjmp (jerr.setjmp_buffer, 3);
378 571
379 jpeg_start_decompress (&cinfo); 572 jpeg_start_decompress (&cinfo);
380 573
381 while (cinfo.output_scanline < cinfo.output_height) 574 while (cinfo.output_scanline < cinfo.output_height)
382 { 575 {
389 rp [3] = (guchar *)rp [2] + rs; 582 rp [3] = (guchar *)rp [2] + rs;
390 583
391 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 584 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
392 } 585 }
393 586
587 if (cinfo.out_color_space == JCS_CMYK)
588 {
589 guchar *end = data + cinfo.output_height * rs;
590
591 while (data < end)
592 {
593 U32 c = data [0];
594 U32 m = data [1];
595 U32 y = data [2];
596 U32 k = data [3];
597
598 if (0)
599 if (cinfo.Adobe_transform == 2)
600 {
601 c ^= 0xff;
602 m ^= 0xff;
603 y ^= 0xff;
604 k ^= 0xff;
605 }
606
607 data [0] = (c * k + 0x80) / 0xff;
608 data [1] = (m * k + 0x80) / 0xff;
609 data [2] = (y * k + 0x80) / 0xff;
610 data [3] = 0xff;
611
612 data += 4;
613 }
614 }
615
394 jpeg_finish_decompress (&cinfo); 616 jpeg_finish_decompress (&cinfo);
395 fclose (fp);
396 jpeg_destroy_decompress (&cinfo); 617 jpeg_destroy_decompress (&cinfo);
618 perlinterp_acquire ();
397} 619}
398 OUTPUT: 620 OUTPUT:
399 RETVAL 621 RETVAL
400 622
401void 623void
402compare (GdkPixbuf *a, GdkPixbuf *b) 624compare (GdkPixbuf *a, GdkPixbuf *b)
403 PPCODE: 625 PPCODE:
626 perlinterp_release ();
404{ 627{
405 int w = gdk_pixbuf_get_width (a); 628 int w = gdk_pixbuf_get_width (a);
406 int h = gdk_pixbuf_get_height (a); 629 int h = gdk_pixbuf_get_height (a);
407 630
408 int sa = gdk_pixbuf_get_rowstride (a); 631 int sa = gdk_pixbuf_get_rowstride (a);
435 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 658 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
436 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 659 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
437 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 660 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
438 } 661 }
439 } 662 }
663
664 perlinterp_acquire ();
440 665
441 EXTEND (SP, 2); 666 EXTEND (SP, 2);
442 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); 667 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
443 PUSHs (sv_2mortal (newSVnv (peak / 255.))); 668 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
444} 669}

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