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Comparing CV/CV.xs (file contents):
Revision 1.44 by root, Sun Dec 30 16:23:23 2012 UTC vs.
Revision 1.55 by root, Sat Dec 23 08:05:32 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 }
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/////////////////////////////////////////////////////////////////////////////
188 206
207static void cv_ms_init (j_decompress_ptr cinfo)
208{
209}
210
211static void cv_ms_term (j_decompress_ptr cinfo)
212{
213}
214
215static boolean cv_ms_fill (j_decompress_ptr cinfo)
216{
217 ERREXIT (cinfo, JERR_INPUT_EMPTY);
218
219 return TRUE;
220}
221
222static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
223{
224 if (num_bytes > 0)
225 {
226 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
227
228 src->next_input_byte += num_bytes;
229 src->bytes_in_buffer -= num_bytes;
230 }
231}
232
233static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
234{
235 struct jpeg_source_mgr *src;
236
237 if (!cinfo->src)
238 cinfo->src = (struct jpeg_source_mgr *)
239 (*cinfo->mem->alloc_small) (
240 (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
241 );
242
243 src = (struct jpeg_source_mgr *)cinfo->src;
244 src->init_source = cv_ms_init;
245 src->fill_input_buffer = cv_ms_fill;
246 src->skip_input_data = cv_ms_skip;
247 src->resync_to_restart = jpeg_resync_to_restart;
248 src->term_source = cv_ms_term;
249 src->next_input_byte = (JOCTET *)buf;
250 src->bytes_in_buffer = buflen;
251}
252
253/////////////////////////////////////////////////////////////////////////////
254
189MODULE = Gtk2::CV PACKAGE = Gtk2::CV 255MODULE = Gtk2::CV PACKAGE = Gtk2::CV
190 256
191PROTOTYPES: ENABLE 257PROTOTYPES: ENABLE
192 258
193# missing function in perl. really :) 259# missing function in perl. really :)
206 272
207 OUTPUT: 273 OUTPUT:
208 RETVAL 274 RETVAL
209 275
210const char * 276const char *
211magic (octet_string path) 277magic (SV *path_or_data)
278 ALIAS:
279 magic = 0
280 magic_mime = 1
281 magic_buffer = 2
282 magic_buffer_mime = 3
212 CODE: 283 CODE:
213{ 284{
214 static magic_t cookie; 285 STRLEN len;
286 char *data = SvPVbyte (path_or_data, len);
215 287
216 if (!cookie) 288 if (!magic_cookie[0])
289 {
290 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
291 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
292 magic_load (magic_cookie[0], 0);
293 magic_load (magic_cookie[1], 0);
217 { 294 }
218 cookie = magic_open (MAGIC_NONE);
219 295
220 if (cookie) 296 perlinterp_release ();
221 magic_load (cookie, 0);
222 else
223 XSRETURN_UNDEF;
224 }
225 297
226 RETVAL = magic_file (cookie, path);
227}
228 OUTPUT:
229 RETVAL 298 RETVAL = ix & 2
299 ? magic_buffer (magic_cookie[ix & 1], data, len)
300 : magic_file (magic_cookie[ix & 1], data);
230 301
231const char * 302 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} 303}
249 OUTPUT: 304 OUTPUT:
250 RETVAL 305 RETVAL
251 306
252# missing/broken in Gtk2 perl module 307# missing/broken in Gtk2 perl module
268 RETVAL 323 RETVAL
269 324
270GdkPixbuf_noinc * 325GdkPixbuf_noinc *
271dealpha_expose (GdkPixbuf *pb) 326dealpha_expose (GdkPixbuf *pb)
272 CODE: 327 CODE:
328 perlinterp_release ();
273{ 329{
274 int w = gdk_pixbuf_get_width (pb); 330 int w = gdk_pixbuf_get_width (pb);
275 int h = gdk_pixbuf_get_height (pb); 331 int h = gdk_pixbuf_get_height (pb);
276 int bpp = gdk_pixbuf_get_n_channels (pb); 332 int bpp = gdk_pixbuf_get_n_channels (pb);
277 int x, y, i; 333 int x, y, i;
286 for (x = 0; x < w; x++) 342 for (x = 0; x < w; x++)
287 for (y = 0; y < h; y++) 343 for (y = 0; y < h; y++)
288 for (i = 0; i < 3; i++) 344 for (i = 0; i < 3; i++)
289 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 345 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
290} 346}
347 perlinterp_acquire ();
291 OUTPUT: 348 OUTPUT:
292 RETVAL 349 RETVAL
293 350
294GdkPixbuf_noinc * 351GdkPixbuf_noinc *
295rotate (GdkPixbuf *pb, int angle) 352rotate (GdkPixbuf *pb, int angle)
296 CODE: 353 CODE:
354 perlinterp_release ();
297 if (angle < 0) 355 if (angle < 0)
298 angle += 360; 356 angle += 360;
299 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE 357 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
300 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE 358 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
301 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN 359 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
302 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE 360 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
303 : angle); 361 : angle);
362 perlinterp_acquire ();
304 OUTPUT: 363 OUTPUT:
305 RETVAL 364 RETVAL
306 365
366const char *
367filetype (SV *image_data)
368 CODE:
369{
370 STRLEN data_len;
371 U8 *data = SvPVbyte (image_data, data_len);
372
373 if (data_len >= 20
374 && data[0] == 0xff
375 && data[1] == 0xd8
376 && data[2] == 0xff)
377 RETVAL = "jpg";
378 else if (data_len >= 12
379 && data[ 0] == (U8)'R'
380 && data[ 1] == (U8)'I'
381 && data[ 2] == (U8)'F'
382 && data[ 3] == (U8)'F'
383 && data[ 8] == (U8)'W'
384 && data[ 9] == (U8)'E'
385 && data[10] == (U8)'B'
386 && data[11] == (U8)'P')
387 RETVAL = "webp";
388 else if (data_len >= 16
389 && data[ 0] == 0x89
390 && data[ 1] == (U8)'P'
391 && data[ 2] == (U8)'N'
392 && data[ 3] == (U8)'G'
393 && data[ 4] == 0x0d
394 && data[ 5] == 0x0a
395 && data[ 6] == 0x1a
396 && data[ 7] == 0x0a)
397 RETVAL = "png";
398 else
399 RETVAL = "other";
400}
401 OUTPUT:
402 RETVAL
403
307GdkPixbuf_noinc * 404GdkPixbuf_noinc *
308load_jpeg (SV *path, int thumbnail=0) 405decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
406 CODE:
407{
408#if WEBP
409 STRLEN data_size;
410 int alpha;
411 WebPData data;
412 WebPDemuxer *demux;
413 WebPIterator iter;
414 WebPDecoderConfig config;
415 int inw, inh;
416
417 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
418 data.size = data_size;
419
420 perlinterp_release ();
421
422 RETVAL = 0;
423
424 if (!(demux = WebPDemux (&data)))
425 goto err_demux;
426
427 if (!WebPDemuxGetFrame (demux, 1, &iter))
428 goto err_iter;
429
430 if (!WebPInitDecoderConfig (&config))
431 goto err_iter;
432
433 config.options.use_threads = 1;
434
435 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
436 goto err_iter;
437
438 inw = config.input.width;
439 inh = config.input.height;
440
441 if (thumbnail)
442 {
443 if (inw * ih > inh * iw)
444 ih = (iw * inh + inw - 1) / inw;
445 else
446 iw = (ih * inw + inh - 1) / inh;
447
448 config.options.bypass_filtering = 1;
449 config.options.no_fancy_upsampling = 1;
450
451 config.options.use_scaling = 1;
452 config.options.scaled_width = iw;
453 config.options.scaled_height = ih;
454 }
455 else
456 {
457 iw = inw;
458 ih = inh;
459 }
460
461 alpha = !!config.input.has_alpha;
462
463 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
464 if (!RETVAL)
465 goto err_iter;
466
467 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
468 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
469 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
470 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
471 config.output.is_external_memory = 1;
472
473 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
474 {
475 g_object_unref (RETVAL);
476 RETVAL = 0;
477 goto err_iter;
478 }
479
480 err_iter:
481 WebPDemuxReleaseIterator (&iter);
482 err_demux:
483 WebPDemuxDelete (demux);
484
485 perlinterp_acquire ();
486#else
487 croak ("load_webp: webp not enabled at compile time");
488#endif
489}
490 OUTPUT:
491 RETVAL
492
493GdkPixbuf_noinc *
494decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
309 CODE: 495 CODE:
310{ 496{
311 struct jpeg_decompress_struct cinfo; 497 struct jpeg_decompress_struct cinfo;
312 struct jpg_err_mgr jerr; 498 struct jpg_err_mgr jerr;
313 guchar *data;
314 int rs; 499 int rs;
315 FILE *fp;
316 volatile GdkPixbuf *pb = 0; 500 volatile GdkPixbuf *pb = 0;
501 STRLEN data_len;
502 guchar *data = SvPVbyte (image_data, data_len);
317 503
318 RETVAL = 0; 504 RETVAL = 0;
319 505
320 fp = fopen (SvPVbyte_nolen (path), "rb"); 506 perlinterp_release ();
321
322 if (!fp)
323 XSRETURN_UNDEF;
324 507
325 cinfo.err = jpeg_std_error (&jerr.err); 508 cinfo.err = jpeg_std_error (&jerr.err);
326 509
327 jerr.err.error_exit = cv_error_exit; 510 jerr.err.error_exit = cv_error_exit;
328 jerr.err.output_message = cv_error_output; 511 jerr.err.output_message = cv_error_output;
329 512
330 if ((rs = setjmp (jerr.setjmp_buffer))) 513 if ((rs = setjmp (jerr.setjmp_buffer)))
331 { 514 {
332 fclose (fp);
333 jpeg_destroy_decompress (&cinfo); 515 jpeg_destroy_decompress (&cinfo);
334 516
335 if (pb) 517 if (pb)
336 g_object_unref ((gpointer)pb); 518 g_object_unref ((gpointer)pb);
337 519
520 perlinterp_acquire ();
338 XSRETURN_UNDEF; 521 XSRETURN_UNDEF;
339 } 522 }
340 523
341 jpeg_create_decompress (&cinfo); 524 jpeg_create_decompress (&cinfo);
525 cv_jpeg_mem_src (&cinfo, data, data_len);
342 526
343 jpeg_stdio_src (&cinfo, fp);
344 jpeg_read_header (&cinfo, TRUE); 527 jpeg_read_header (&cinfo, TRUE);
345 528
346 cinfo.dct_method = JDCT_DEFAULT; 529 cinfo.dct_method = JDCT_DEFAULT;
347 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 530 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
348 cinfo.do_block_smoothing = FALSE; 531 cinfo.do_block_smoothing = FALSE;
358 { 541 {
359 cinfo.dct_method = JDCT_FASTEST; 542 cinfo.dct_method = JDCT_FASTEST;
360 cinfo.do_fancy_upsampling = FALSE; 543 cinfo.do_fancy_upsampling = FALSE;
361 544
362 while (cinfo.scale_denom < 8 545 while (cinfo.scale_denom < 8
363 && cinfo.output_width >= IW*4 546 && cinfo.output_width >= iw*4
364 && cinfo.output_height >= IH*4) 547 && cinfo.output_height >= ih*4)
365 { 548 {
366 cinfo.scale_denom <<= 1; 549 cinfo.scale_denom <<= 1;
367 jpeg_calc_output_dimensions (&cinfo); 550 jpeg_calc_output_dimensions (&cinfo);
368 } 551 }
369 } 552 }
370 553
554 if (cinfo.output_components != 3)
555 longjmp (jerr.setjmp_buffer, 3);
556
557 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
558 {
559 cinfo.out_color_space = JCS_CMYK;
560 cinfo.output_components = 4;
561 }
562
371 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 563 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
372 if (!RETVAL) 564 if (!RETVAL)
373 longjmp (jerr.setjmp_buffer, 2); 565 longjmp (jerr.setjmp_buffer, 2);
374 566
375 data = gdk_pixbuf_get_pixels (RETVAL); 567 data = gdk_pixbuf_get_pixels (RETVAL);
376 rs = gdk_pixbuf_get_rowstride (RETVAL); 568 rs = gdk_pixbuf_get_rowstride (RETVAL);
377
378 if (cinfo.output_components != 3)
379 longjmp (jerr.setjmp_buffer, 3);
380 569
381 jpeg_start_decompress (&cinfo); 570 jpeg_start_decompress (&cinfo);
382 571
383 while (cinfo.output_scanline < cinfo.output_height) 572 while (cinfo.output_scanline < cinfo.output_height)
384 { 573 {
391 rp [3] = (guchar *)rp [2] + rs; 580 rp [3] = (guchar *)rp [2] + rs;
392 581
393 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 582 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
394 } 583 }
395 584
585 if (cinfo.out_color_space == JCS_CMYK)
586 {
587 guchar *end = data + cinfo.output_height * rs;
588
589 while (data < end)
590 {
591 U32 c = data [0];
592 U32 m = data [1];
593 U32 y = data [2];
594 U32 k = data [3];
595
596 if (0)
597 if (cinfo.Adobe_transform == 2)
598 {
599 c ^= 0xff;
600 m ^= 0xff;
601 y ^= 0xff;
602 k ^= 0xff;
603 }
604
605 data [0] = (c * k + 0x80) / 0xff;
606 data [1] = (m * k + 0x80) / 0xff;
607 data [2] = (y * k + 0x80) / 0xff;
608 data [3] = 0xff;
609
610 data += 4;
611 }
612 }
613
396 jpeg_finish_decompress (&cinfo); 614 jpeg_finish_decompress (&cinfo);
397 fclose (fp);
398 jpeg_destroy_decompress (&cinfo); 615 jpeg_destroy_decompress (&cinfo);
616 perlinterp_acquire ();
399} 617}
400 OUTPUT: 618 OUTPUT:
401 RETVAL 619 RETVAL
402 620
403void 621void
404compare (GdkPixbuf *a, GdkPixbuf *b) 622compare (GdkPixbuf *a, GdkPixbuf *b)
405 PPCODE: 623 PPCODE:
624 perlinterp_release ();
406{ 625{
407 int w = gdk_pixbuf_get_width (a); 626 int w = gdk_pixbuf_get_width (a);
408 int h = gdk_pixbuf_get_height (a); 627 int h = gdk_pixbuf_get_height (a);
409 628
410 int sa = gdk_pixbuf_get_rowstride (a); 629 int sa = gdk_pixbuf_get_rowstride (a);
437 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 656 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
438 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); 657 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
439 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));
440 } 659 }
441 } 660 }
661
662 perlinterp_acquire ();
442 663
443 EXTEND (SP, 2); 664 EXTEND (SP, 2);
444 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); 665 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
445 PUSHs (sv_2mortal (newSVnv (peak / 255.))); 666 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
446} 667}

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