ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/CV/CV.xs
(Generate patch)

Comparing CV/CV.xs (file contents):
Revision 1.21 by root, Sat Jul 23 03:25:51 2005 UTC vs.
Revision 1.58 by root, Mon Jan 4 04:49:04 2021 UTC

2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include <string.h> 5#include <string.h>
6#include <setjmp.h> 6#include <setjmp.h>
7#include <math.h>
8
9#include <magic.h>
7 10
8#include <jpeglib.h> 11#include <jpeglib.h>
12#include <jerror.h>
13
14#include <glib.h>
15#include <gtk/gtk.h>
16#include <gdk/gdkx.h>
9#include <gdk-pixbuf/gdk-pixbuf.h> 17#include <gdk-pixbuf/gdk-pixbuf.h>
10 18
11#include <gperl.h> 19#include <gperl.h>
12#include <gtk2perl.h> 20#include <gtk2perl.h>
13 21
22#include <assert.h>
23
24#if WEBP
25#include <webp/demux.h>
26#include <webp/decode.h>
27#endif
28
29#if JXL
30#include <jxl/decode.h>
31#include "jxl/thread_parallel_runner.h"
32#endif
33
34#include "perlmulticore.h"
35
14#define IW 80 /* MUST match Schnauer.pm! */ 36#define IW 80 /* MUST match Schnauzer.pm! */
15#define IH 60 /* MUST match Schnauer.pm! */ 37#define IH 60 /* MUST match Schnauzer.pm! */
16
17#define RAND (seed = (seed + 7141) * 54773 % 134456)
18 38
19#define LINELENGTH 240 39#define LINELENGTH 240
20 40
21#define ELLIPSIS "\xe2\x80\xa6" 41#define ELLIPSIS "\xe2\x80\xa6"
42
43typedef char *octet_string;
44
45static magic_t magic_cookie[2]; /* !mime, mime */
22 46
23struct jpg_err_mgr 47struct jpg_err_mgr
24{ 48{
25 struct jpeg_error_mgr err; 49 struct jpeg_error_mgr err;
26 jmp_buf setjmp_buffer; 50 jmp_buf setjmp_buffer;
27}; 51};
28 52
29static void 53static void
30cv_error_exit (j_common_ptr cinfo) 54cv_error_exit (j_common_ptr cinfo)
31{ 55{
56 cinfo->err->output_message (cinfo);
32 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); 57 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
33} 58}
34 59
35static void 60static void
36cv_error_output (j_common_ptr cinfo) 61cv_error_output (j_common_ptr cinfo)
37{ 62{
63 char msg[JMSG_LENGTH_MAX];
64
65 cinfo->err->format_message (cinfo, msg);
66
67 fprintf (stderr, "JPEG decoding error: %s\n", msg);
38 return; 68 return;
39} 69}
40 70
41static void 71static void
42rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, 72rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
63 93
64 *h &= 255; 94 *h &= 255;
65 } 95 }
66} 96}
67 97
98struct feature {
99 float v1, v2, v3; // mean, square, cube
100 int n;
101};
102
103static void
104feature_init (struct feature *f)
105{
106 f->v1 = 0.;
107 f->v2 = 0.;
108 f->v3 = 0.;
109 f->n = 0;
110}
111
112// didn't find an algorithm to neatly do mean, variance and skew in one pass.
113// elmex ist schuld.
114static void
115feature_update_pass_1 (struct feature *f, unsigned int v)
116{
117 f->v1 += v;
118 f->n += 1;
119}
120
121static void
122feature_finish_pass_1 (struct feature *f)
123{
124 if (f->n < 1)
125 return;
126
127 f->v1 /= f->n;
128}
129
130static void
131feature_update_pass_2 (struct feature *f, unsigned int v)
132{
133 float d = v - f->v1;
134
135 f->v2 += d * d;
136 f->v3 += d * d * d;
137}
138
139static void
140feature_finish_pass_2 (struct feature *f)
141{
142 if (f->n < 1)
143 return;
144
145 f->v2 /= f->n;
146 f->v3 /= f->n;
147
148 f->v1 /= 255.;
149 f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
150 f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
151}
152
68static guint32 a85_val; 153static guint32 a85_val;
69static guint a85_cnt; 154static guint a85_cnt;
70static guchar a85_buf[LINELENGTH], *a85_ptr; 155static guchar a85_buf[LINELENGTH], *a85_ptr;
71 156
72static void 157static void
84 if (!--a85_cnt) 169 if (!--a85_cnt)
85 { 170 {
86 a85_cnt = 4; 171 a85_cnt = 4;
87 if (a85_val) 172 if (a85_val)
88 { 173 {
89 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; 174 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
90 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; 175 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
91 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; 176 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
92 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; 177 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
93 a85_ptr[0] = (a85_val ) + 33; 178 a85_ptr[0] = (a85_val ) + 33;
94 179
95 a85_ptr += 5; 180 a85_ptr += 5;
96 } 181 }
119 204
120 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 205 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
121} 206}
122 207
123///////////////////////////////////////////////////////////////////////////// 208/////////////////////////////////////////////////////////////////////////////
209// memory source for libjpeg
210
211static void cv_ms_init (j_decompress_ptr cinfo)
212{
213}
214
215static void cv_ms_term (j_decompress_ptr cinfo)
216{
217}
218
219static boolean cv_ms_fill (j_decompress_ptr cinfo)
220{
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);
231
232 return TRUE;
233}
234
235static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
236{
237 struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src;
238
239 src->next_input_byte += num_bytes;
240 src->bytes_in_buffer -= num_bytes;
241}
242
243static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
244{
245 struct jpeg_source_mgr *src;
246
247 if (!cinfo->src)
248 cinfo->src = (struct jpeg_source_mgr *)
249 (*cinfo->mem->alloc_small) (
250 (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
251 );
252
253 src = (struct jpeg_source_mgr *)cinfo->src;
254 src->init_source = cv_ms_init;
255 src->fill_input_buffer = cv_ms_fill;
256 src->skip_input_data = cv_ms_skip;
257 src->resync_to_restart = jpeg_resync_to_restart;
258 src->term_source = cv_ms_term;
259 src->next_input_byte = (JOCTET *)buf;
260 src->bytes_in_buffer = buflen;
261}
262
263/////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////
124 303
125MODULE = Gtk2::CV PACKAGE = Gtk2::CV 304MODULE = Gtk2::CV PACKAGE = Gtk2::CV
126 305
127PROTOTYPES: ENABLE 306PROTOTYPES: ENABLE
128 307
308# calculate the common prefix length of two strings
309# missing function in perl. really :)
310int
311common_prefix_length (a, b)
312 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
313 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
314 CODE:
315 RETVAL = 0;
316
317 while (*a == *b && *a)
318 {
319 RETVAL += (*a & 0xc0) != 0x80;
320 a++, b++;
321 }
322
323 OUTPUT:
324 RETVAL
325
326const char *
327magic (SV *path_or_data)
328 ALIAS:
329 magic = 0
330 magic_mime = 1
331 magic_buffer = 2
332 magic_buffer_mime = 3
333 CODE:
334{
335 STRLEN len;
336 char *data = SvPVbyte (path_or_data, len);
337
338 if (!magic_cookie[0])
339 {
340 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
341 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
342 magic_load (magic_cookie[0], 0);
343 magic_load (magic_cookie[1], 0);
344 }
345
346 perlinterp_release ();
347
348 RETVAL = ix & 2
349 ? magic_buffer (magic_cookie[ix & 1], data, len)
350 : magic_file (magic_cookie[ix & 1], data);
351
352 perlinterp_acquire ();
353}
354 OUTPUT:
355 RETVAL
356
357# missing/broken in Gtk2 perl module
358
359void
360gdk_window_clear_hints (GdkWindow *window)
361 CODE:
362 gdk_window_set_geometry_hints (window, 0, 0);
363
364gboolean
365gdk_net_wm_supports (GdkAtom property)
366 CODE:
367#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
368 RETVAL = gdk_net_wm_supports (property);
369#else
370 RETVAL = 0;
371#endif
372 OUTPUT:
373 RETVAL
374
129GdkPixbuf_noinc * 375GdkPixbuf_noinc *
130transpose (GdkPixbuf *pb) 376dealpha_expose (GdkPixbuf *pb)
131 CODE: 377 CODE:
378 perlinterp_release ();
132{ 379{
133 int w = gdk_pixbuf_get_width (pb); 380 int w = gdk_pixbuf_get_width (pb);
134 int h = gdk_pixbuf_get_height (pb); 381 int h = gdk_pixbuf_get_height (pb);
135 int bpp = gdk_pixbuf_get_n_channels (pb); 382 int bpp = gdk_pixbuf_get_n_channels (pb);
136 int x, y, i; 383 int x, y, i;
137 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 384 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
138 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 385 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
139 386
140 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); 387 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
141 388
142 dst = gdk_pixbuf_get_pixels (RETVAL); 389 dst = gdk_pixbuf_get_pixels (RETVAL);
143 dstr = gdk_pixbuf_get_rowstride (RETVAL); 390 dstr = gdk_pixbuf_get_rowstride (RETVAL);
144 391
145 for (y = 0; y < h; y++)
146 for (x = 0; x < w; x++) 392 for (x = 0; x < w; x++)
393 for (y = 0; y < h; y++)
147 for (i = 0; i < bpp; i++) 394 for (i = 0; i < 3; i++)
148 dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; 395 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
149} 396}
397 perlinterp_acquire ();
150 OUTPUT: 398 OUTPUT:
151 RETVAL 399 RETVAL
152 400
153GdkPixbuf_noinc * 401GdkPixbuf_noinc *
154flop (GdkPixbuf *pb) 402rotate (GdkPixbuf *pb, int angle)
155 CODE: 403 CODE:
156{ 404 perlinterp_release ();
157 int w = gdk_pixbuf_get_width (pb); 405 if (angle < 0)
158 int h = gdk_pixbuf_get_height (pb); 406 angle += 360;
159 int bpp = gdk_pixbuf_get_n_channels (pb); 407 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
160 int x, y, i; 408 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
161 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 409 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
162 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 410 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
163 411 : angle);
164 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); 412 perlinterp_acquire ();
165
166 dst = gdk_pixbuf_get_pixels (RETVAL);
167 dstr = gdk_pixbuf_get_rowstride (RETVAL);
168
169 for (y = 0; y < h; y++)
170 for (x = 0; x < w; x++)
171 for (i = 0; i < bpp; i++)
172 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
173}
174 OUTPUT: 413 OUTPUT:
175 RETVAL 414 RETVAL
176 415
416const char *
417filetype (SV *image_data)
418 CODE:
419{
420 STRLEN 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,
424 0x0d, 0xa, 0x87, 0x0a, 0, 0, 0, 0x14,
425 0x66, 0x74, 0x79, 0x70, 0x6a, 0x78, 0x6c, 0x20,
426 0, 0, 0, 0, 0x6a, 0x78, 0x6c, 0x20,
427 };
428
429 if (data_len >= 20
430 && data[0] == 0xff
431 && data[1] == 0xd8
432 && data[2] == 0xff)
433 RETVAL = "image/jpeg";
434 else if (data_len >= 12
435 && data[ 0] == (U8)'R'
436 && data[ 1] == (U8)'I'
437 && data[ 2] == (U8)'F'
438 && data[ 3] == (U8)'F'
439 && data[ 8] == (U8)'W'
440 && data[ 9] == (U8)'E'
441 && data[10] == (U8)'B'
442 && data[11] == (U8)'P')
443 RETVAL = "image/webp";
444 else if (data_len >= 16
445 && data[ 0] == 0x89
446 && data[ 1] == (U8)'P'
447 && data[ 2] == (U8)'N'
448 && data[ 3] == (U8)'G'
449 && data[ 4] == 0x0d
450 && data[ 5] == 0x0a
451 && data[ 6] == 0x1a
452 && data[ 7] == 0x0a)
453 RETVAL = "image/png";
454 else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0)
455 RETVAL = "image/jxl";
456 else
457 XSRETURN_UNDEF;
458}
459 OUTPUT:
460 RETVAL
461
177GdkPixbuf_noinc * 462GdkPixbuf_noinc *
178load_jpeg (char *path, int thumbnail=0) 463decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
464 CODE:
465{
466#if WEBP
467 STRLEN data_size;
468 int alpha;
469 WebPData data;
470 WebPDemuxer *demux;
471 WebPIterator iter;
472 WebPDecoderConfig config;
473 int inw, inh;
474
475 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
476 data.size = data_size;
477
478 perlinterp_release ();
479
480 RETVAL = 0;
481
482 if (!(demux = WebPDemux (&data)))
483 goto err_demux;
484
485 if (!WebPDemuxGetFrame (demux, 1, &iter))
486 goto err_iter;
487
488 if (!WebPInitDecoderConfig (&config))
489 goto err_iter;
490
491 config.options.use_threads = 1;
492
493 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
494 goto err_iter;
495
496 inw = config.input.width;
497 inh = config.input.height;
498
499 if (thumbnail)
500 {
501 if (inw * ih > inh * iw)
502 ih = (iw * inh + inw - 1) / inw;
503 else
504 iw = (ih * inw + inh - 1) / inh;
505
506 config.options.bypass_filtering = 1;
507 config.options.no_fancy_upsampling = 1;
508
509 config.options.use_scaling = 1;
510 config.options.scaled_width = iw;
511 config.options.scaled_height = ih;
512 }
513 else
514 {
515 iw = inw;
516 ih = inh;
517 }
518
519 alpha = !!config.input.has_alpha;
520
521 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
522 if (!RETVAL)
523 goto err_iter;
524
525 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
526 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
527 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
528 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
529 config.output.is_external_memory = 1;
530
531 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
532 {
533 g_object_unref (RETVAL);
534 RETVAL = 0;
535 goto err_iter;
536 }
537
538 err_iter:
539 WebPDemuxReleaseIterator (&iter);
540 err_demux:
541 WebPDemuxDelete (demux);
542
543 perlinterp_acquire ();
544#else
545 croak ("load_webp: webp not enabled at compile time");
546#endif
547}
548 OUTPUT:
549 RETVAL
550
551GdkPixbuf_noinc *
552decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
553 CODE:
554{
555#if JXL
556 JxlDecoder *dec = JxlDecoderCreate (0);
557 JxlBasicInfo info;
558 const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data);
559 size_t avail_in = SvCUR (image_data);
560 const char *error = 0;
561 void *runner = 0;
562 struct bmff_box box;
563
564 perlinterp_release ();
565
566 RETVAL = 0;
567
568 error = "JxlDecoderCreate failed";
569 if (!dec)
570 goto done;
571
572 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
573
574 error = "JxlDecoderSetParallelRunner failed";
575 if (JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner) != JXL_DEC_SUCCESS)
576 goto done;
577
578 error = "JxlDecoderSubscribeEvents failed";
579 if (JxlDecoderSubscribeEvents (dec, JXL_DEC_FULL_IMAGE | 0xffc0) != JXL_DEC_SUCCESS)
580 goto done;
581
582 for (;;)
583 {
584 JxlDecoderStatus status = JxlDecoderProcessInput (dec, &next_in, &avail_in);
585
586 printf ("status %d\n",status);
587
588 switch (status)
589 {
590 case JXL_DEC_ERROR:
591 error = "JxlDecoderProcessInput failed";
592 goto done;
593
594 case JXL_DEC_NEED_MORE_INPUT:
595 error = "incomplete file";
596 goto done;
597
598 case JXL_DEC_SUCCESS:
599 goto done;
600
601 case JXL_DEC_NEED_IMAGE_OUT_BUFFER:
602 {
603 error = "JxlDecoderGetBasicInfo failed";
604 if (JxlDecoderGetBasicInfo (dec, &info) != JXL_DEC_SUCCESS)
605 goto done;
606
607 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
608 error = "unable to allocate pixbuf";
609 if (!RETVAL)
610 goto done;
611
612 JxlPixelFormat format = {
613 info.alpha_bits ? 4 : 3,
614 JXL_TYPE_UINT8,
615 JXL_NATIVE_ENDIAN,
616 gdk_pixbuf_get_rowstride (RETVAL)
617 };
618
619 error = "JxlDecoderSetImageOutBuffer failed";
620 if (JxlDecoderSetImageOutBuffer (
621 dec,
622 &format,
623 gdk_pixbuf_get_pixels (RETVAL),
624 gdk_pixbuf_get_byte_length (RETVAL)
625 ) != JXL_DEC_SUCCESS)
626 goto done;
627 }
628 break;
629
630 default:
631 error = "unexpected event";
632 goto done;
633 }
634 }
635
636 done:
637 if (dec)
638 JxlDecoderDestroy (dec);
639
640 if (runner)
641 JxlThreadParallelRunnerDestroy (runner);
642
643 perlinterp_acquire ();
644
645 if (error)
646 {
647 if (RETVAL)
648 g_object_unref (RETVAL);
649
650 croak ("load_jxl: %s", error);
651 }
652#else
653 croak ("load_jxl: jpeg-xl not enabled at compile time");
654#endif
655}
656 OUTPUT:
657 RETVAL
658
659GdkPixbuf_noinc *
660decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
179 CODE: 661 CODE:
180{ 662{
181 struct jpeg_decompress_struct cinfo; 663 struct jpeg_decompress_struct cinfo;
182 struct jpg_err_mgr jerr; 664 struct jpg_err_mgr jerr;
183 guchar *data;
184 int rs; 665 int rs;
185 FILE *fp;
186 volatile GdkPixbuf *pb = 0; 666 volatile GdkPixbuf *pb = 0;
667 STRLEN data_len;
668 guchar *data = SvPVbyte (image_data, data_len);
669
187 RETVAL = 0; 670 RETVAL = 0;
188 671
189 if (!(fp = fopen (path, "rb"))) 672 perlinterp_release ();
190 XSRETURN_UNDEF;
191 673
192 cinfo.err = jpeg_std_error (&jerr.err); 674 cinfo.err = jpeg_std_error (&jerr.err);
193 675
194 jerr.err.error_exit = cv_error_exit; 676 jerr.err.error_exit = cv_error_exit;
195 jerr.err.output_message = cv_error_output; 677 jerr.err.output_message = cv_error_output;
196 678
197 if ((rs = setjmp (jerr.setjmp_buffer))) 679 if ((rs = setjmp (jerr.setjmp_buffer)))
198 { 680 {
199 fclose (fp);
200 jpeg_destroy_decompress (&cinfo); 681 jpeg_destroy_decompress (&cinfo);
201 682
202 if (pb) 683 if (pb)
203 g_object_unref ((gpointer)pb); 684 g_object_unref ((gpointer)pb);
204 685
686 perlinterp_acquire ();
205 XSRETURN_UNDEF; 687 XSRETURN_UNDEF;
206 } 688 }
207 689
690 if (!data_len)
691 longjmp (jerr.setjmp_buffer, 4);
692
208 jpeg_create_decompress (&cinfo); 693 jpeg_create_decompress (&cinfo);
694 cv_jpeg_mem_src (&cinfo, data, data_len);
209 695
210 jpeg_stdio_src (&cinfo, fp);
211 jpeg_read_header (&cinfo, TRUE); 696 jpeg_read_header (&cinfo, TRUE);
212 697
213 cinfo.dct_method = JDCT_DEFAULT; 698 cinfo.dct_method = JDCT_DEFAULT;
214 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 699 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
215 cinfo.do_block_smoothing = FALSE; 700 cinfo.do_block_smoothing = FALSE;
225 { 710 {
226 cinfo.dct_method = JDCT_FASTEST; 711 cinfo.dct_method = JDCT_FASTEST;
227 cinfo.do_fancy_upsampling = FALSE; 712 cinfo.do_fancy_upsampling = FALSE;
228 713
229 while (cinfo.scale_denom < 8 714 while (cinfo.scale_denom < 8
230 && cinfo.output_width >= IW*4 715 && cinfo.output_width >= iw*4
231 && cinfo.output_height >= IH*4) 716 && cinfo.output_height >= ih*4)
232 { 717 {
233 cinfo.scale_denom <<= 1; 718 cinfo.scale_denom <<= 1;
234 jpeg_calc_output_dimensions (&cinfo); 719 jpeg_calc_output_dimensions (&cinfo);
235 } 720 }
236 } 721 }
237 722
723 if (cinfo.output_components != 3)
724 longjmp (jerr.setjmp_buffer, 3);
725
726 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
727 {
728 cinfo.out_color_space = JCS_CMYK;
729 cinfo.output_components = 4;
730 }
731
238 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 732 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
239 if (!RETVAL) 733 if (!RETVAL)
240 longjmp (jerr.setjmp_buffer, 2); 734 longjmp (jerr.setjmp_buffer, 2);
241 735
242 data = gdk_pixbuf_get_pixels (RETVAL); 736 data = gdk_pixbuf_get_pixels (RETVAL);
243 rs = gdk_pixbuf_get_rowstride (RETVAL); 737 rs = gdk_pixbuf_get_rowstride (RETVAL);
244
245 if (cinfo.output_components != 3)
246 longjmp (jerr.setjmp_buffer, 3);
247 738
248 jpeg_start_decompress (&cinfo); 739 jpeg_start_decompress (&cinfo);
249 740
250 while (cinfo.output_scanline < cinfo.output_height) 741 while (cinfo.output_scanline < cinfo.output_height)
251 { 742 {
258 rp [3] = (guchar *)rp [2] + rs; 749 rp [3] = (guchar *)rp [2] + rs;
259 750
260 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 751 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
261 } 752 }
262 753
754 if (cinfo.out_color_space == JCS_CMYK)
755 {
756 guchar *end = data + cinfo.output_height * rs;
757
758 while (data < end)
759 {
760 U32 c = data [0];
761 U32 m = data [1];
762 U32 y = data [2];
763 U32 k = data [3];
764
765 if (0)
766 if (cinfo.Adobe_transform == 2)
767 {
768 c ^= 0xff;
769 m ^= 0xff;
770 y ^= 0xff;
771 k ^= 0xff;
772 }
773
774 data [0] = (c * k + 0x80) / 0xff;
775 data [1] = (m * k + 0x80) / 0xff;
776 data [2] = (y * k + 0x80) / 0xff;
777 data [3] = 0xff;
778
779 data += 4;
780 }
781 }
782
263 jpeg_finish_decompress (&cinfo); 783 jpeg_finish_decompress (&cinfo);
264 fclose (fp);
265 jpeg_destroy_decompress (&cinfo); 784 jpeg_destroy_decompress (&cinfo);
785 perlinterp_acquire ();
266} 786}
267 OUTPUT: 787 OUTPUT:
268 RETVAL 788 RETVAL
269 789
790void
791compare (GdkPixbuf *a, GdkPixbuf *b)
792 PPCODE:
793 perlinterp_release ();
794{
795 int w = gdk_pixbuf_get_width (a);
796 int h = gdk_pixbuf_get_height (a);
797
798 int sa = gdk_pixbuf_get_rowstride (a);
799 int sb = gdk_pixbuf_get_rowstride (b);
800
801 guchar *pa = gdk_pixbuf_get_pixels (a);
802 guchar *pb = gdk_pixbuf_get_pixels (b);
803
804 int x, y;
805
806 assert (w == gdk_pixbuf_get_width (b));
807 assert (h == gdk_pixbuf_get_height (b));
808
809 assert (gdk_pixbuf_get_n_channels (a) == 3);
810 assert (gdk_pixbuf_get_n_channels (b) == 3);
811
812 double diff = 0.;
813 int peak = 0;
814
815 if (w && h)
816 for (y = 0; y < h; y++)
817 {
818 guchar *pa_ = pa + y * sa;
819 guchar *pb_ = pb + y * sb;
820
821 for (x = 0; x < w; x++)
822 {
823 int d;
824
825 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
826 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
827 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
828 }
829 }
830
831 perlinterp_acquire ();
832
833 EXTEND (SP, 2);
834 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
835 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
836}
837
270############################################################################# 838#############################################################################
271 839
272MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 840MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
841
842# currently only works for filenames (octet strings)
273 843
274SV * 844SV *
275foldcase (SV *pathsv) 845foldcase (SV *pathsv)
276 PROTOTYPE: $ 846 PROTOTYPE: $
277 CODE: 847 CODE:
278{ 848{
279 STRLEN plen; 849 STRLEN plen;
280 U8 *path = SvPVutf8 (pathsv, plen); 850 U8 *path = (U8 *)SvPV (pathsv, plen);
281 U8 *pend = path + plen; 851 U8 *pend = path + plen;
282 U8 dst [plen * 6 * 3], *dstp = dst; 852 U8 dst [plen * 6 * 3], *dstp = dst;
283 853
284 while (path < pend) 854 while (path < pend)
285 { 855 {
286 U8 ch = *path; 856 U8 ch = *path;
287 857
288 if (ch >= 'a' && ch <= 'z') 858 if (ch >= 'a' && ch <= 'z')
289 *dstp++ = *path++; 859 *dstp++ = *path++;
860 else if (ch >= 'A' && ch <= 'Z')
861 *dstp++ = *path++ + ('a' - 'A');
290 else if (ch >= '0' && ch <= '9') 862 else if (ch >= '0' && ch <= '9')
291 { 863 {
292 STRLEN el, nl = 0; 864 STRLEN el, nl = 0;
293 while (*path >= '0' && *path <= '9' && path < pend) 865 while (*path >= '0' && *path <= '9' && path < pend)
294 path++, nl++; 866 path++, nl++;
297 *dstp++ = '0'; 869 *dstp++ = '0';
298 870
299 memcpy (dstp, path - nl, nl); 871 memcpy (dstp, path - nl, nl);
300 dstp += nl; 872 dstp += nl;
301 } 873 }
874 else
875 *dstp++ = *path++;
876#if 0
302 else 877 else
303 { 878 {
304 STRLEN cl; 879 STRLEN cl;
305 to_utf8_fold (path, dstp, &cl); 880 to_utf8_fold (path, dstp, &cl);
306 dstp += cl; 881 dstp += cl;
307 path += is_utf8_char (path); 882 path += is_utf8_char (path);
308 } 883 }
884#endif
309 } 885 }
310 886
311 RETVAL = newSVpvn (dst, dstp - dst); 887 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
312} 888}
313 OUTPUT: 889 OUTPUT:
314 RETVAL 890 RETVAL
315 891
316GdkPixbuf_noinc * 892GdkPixbuf_noinc *
317p7_to_pb (int w, int h, guchar *src) 893p7_to_pb (int w, int h, SV *src_sv)
318 PROTOTYPE: @ 894 PROTOTYPE: @
319 CODE: 895 CODE:
320{ 896{
321 int x, y; 897 int x, y;
322 guchar *dst, *d; 898 guchar *dst, *d;
323 int dstr; 899 int dstr;
900 guchar *src = (guchar *)SvPVbyte_nolen (src_sv);
324 901
325 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); 902 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
326 dst = gdk_pixbuf_get_pixels (RETVAL); 903 dst = gdk_pixbuf_get_pixels (RETVAL);
327 dstr = gdk_pixbuf_get_rowstride (RETVAL); 904 dstr = gdk_pixbuf_get_rowstride (RETVAL);
328 905
337 } 914 }
338} 915}
339 OUTPUT: 916 OUTPUT:
340 RETVAL 917 RETVAL
341 918
919#############################################################################
920
921MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
922
923void
924dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
925 CODE:
926{
927 int w = gdk_pixbuf_get_width (pb);
928 int h = gdk_pixbuf_get_height (pb);
929 int x, y, i;
930 guchar *dst;
931 int bpp = gdk_pixbuf_get_n_channels (pb);
932 guchar *src = gdk_pixbuf_get_pixels (pb);
933 int sstr = gdk_pixbuf_get_rowstride (pb);
934
935 a85_init ();
936
937 for (y = 0; y < h; y++)
938 for (x = 0; x < w; x++)
939 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
940 a85_push (fp, src [x * bpp + y * sstr + i]);
941
942 a85_finish (fp);
943}
944
945void
946dump_binary (PerlIO *fp, GdkPixbuf *pb)
947 CODE:
948{
949 int w = gdk_pixbuf_get_width (pb);
950 int h = gdk_pixbuf_get_height (pb);
951 int x, y, i;
952 guchar *dst;
953 int bpp = gdk_pixbuf_get_n_channels (pb);
954 guchar *src = gdk_pixbuf_get_pixels (pb);
955 int sstr = gdk_pixbuf_get_rowstride (pb);
956
957 for (y = 0; y < h; y++)
958 for (x = 0; x < w; x++)
959 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
960 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
961}
962
963#############################################################################
964
965MODULE = Gtk2::CV PACKAGE = Gtk2::CV
966
342SV * 967SV *
343pb_to_p7 (GdkPixbuf *pb) 968pb_to_hv84 (GdkPixbuf *pb)
344 CODE: 969 CODE:
345{ 970{
346 int w = gdk_pixbuf_get_width (pb); 971 int w = gdk_pixbuf_get_width (pb);
347 int h = gdk_pixbuf_get_height (pb); 972 int h = gdk_pixbuf_get_height (pb);
348 int x, y; 973 int x, y;
349 guchar *dst; 974 guchar *dst;
350 int bpp = gdk_pixbuf_get_n_channels (pb); 975 int bpp = gdk_pixbuf_get_n_channels (pb);
351 guchar *src = gdk_pixbuf_get_pixels (pb); 976 guchar *src = gdk_pixbuf_get_pixels (pb);
352 int sstr = gdk_pixbuf_get_rowstride (pb); 977 int sstr = gdk_pixbuf_get_rowstride (pb);
353 int Er[IW], Eg[IW], Eb[IW];
354 int seed = 77;
355
356 RETVAL = newSV (w * h);
357 SvPOK_only (RETVAL);
358 SvCUR_set (RETVAL, w * h);
359
360 dst = SvPVX (RETVAL);
361
362 memset (Er, 0, sizeof (int) * IW);
363 memset (Eg, 0, sizeof (int) * IW);
364 memset (Eb, 0, sizeof (int) * IW);
365
366 /* some primitive error distribution + random dithering */
367
368 for (y = 0; y < h; y++)
369 {
370 int er = 0, eg = 0, eb = 0;
371
372 for (x = 0; x < w; x++)
373 {
374 int r, g, b;
375 guchar *p = src + x * bpp + y * sstr;
376
377 r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
378 g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
379 b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
380
381 r = r > 7 ? 7 : r < 0 ? 0 : r;
382 g = g > 7 ? 7 : g < 0 ? 0 : g;
383 b = b > 3 ? 3 : b < 0 ? 0 : b;
384
385 er += p[0] - (r * 255 + 4) / 7;
386 eg += p[1] - (g * 255 + 4) / 7;
387 eb += p[2] - (b * 255 + 2) / 3;
388
389 Er[x] = er >> 1; er -= (er + 1) >> 1;
390 Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
391 Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
392
393 *dst++ = r << 5 | g << 2 | b;
394 }
395 }
396}
397 OUTPUT:
398 RETVAL
399
400#############################################################################
401
402MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
403
404void
405dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
406 CODE:
407{
408 int w = gdk_pixbuf_get_width (pb);
409 int h = gdk_pixbuf_get_height (pb);
410 int x, y, i;
411 guchar *dst;
412 int bpp = gdk_pixbuf_get_n_channels (pb);
413 guchar *src = gdk_pixbuf_get_pixels (pb);
414 int sstr = gdk_pixbuf_get_rowstride (pb);
415
416 a85_init ();
417
418 for (y = 0; y < h; y++)
419 for (x = 0; x < w; x++)
420 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
421 a85_push (fp, src [x * bpp + y * sstr + i]);
422
423 a85_finish (fp);
424}
425
426void
427dump_binary (PerlIO *fp, GdkPixbuf *pb)
428 CODE:
429{
430 int w = gdk_pixbuf_get_width (pb);
431 int h = gdk_pixbuf_get_height (pb);
432 int x, y, i;
433 guchar *dst;
434 int bpp = gdk_pixbuf_get_n_channels (pb);
435 guchar *src = gdk_pixbuf_get_pixels (pb);
436 int sstr = gdk_pixbuf_get_rowstride (pb);
437
438 for (y = 0; y < h; y++)
439 for (x = 0; x < w; x++)
440 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
441 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
442}
443
444#############################################################################
445
446MODULE = Gtk2::CV PACKAGE = Gtk2::CV
447
448SV *
449pb_to_hv84 (GdkPixbuf *pb)
450 CODE:
451{
452 int w = gdk_pixbuf_get_width (pb);
453 int h = gdk_pixbuf_get_height (pb);
454 int x, y;
455 guchar *dst;
456 int bpp = gdk_pixbuf_get_n_channels (pb);
457 guchar *src = gdk_pixbuf_get_pixels (pb);
458 int sstr = gdk_pixbuf_get_rowstride (pb);
459 978
460 RETVAL = newSV (6 * 8 * 12 / 8); 979 RETVAL = newSV (6 * 8 * 12 / 8);
461 SvPOK_only (RETVAL); 980 SvPOK_only (RETVAL);
462 SvCUR_set (RETVAL, 6 * 8 * 12 / 8); 981 SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
463 982
464 dst = SvPVX (RETVAL); 983 dst = (guchar *)SvPVX (RETVAL);
465 984
466 /* some primitive error distribution + random dithering */ 985 /* some primitive error distribution + random dithering */
467 986
468 for (y = 0; y < h; y++) 987 for (y = 0; y < h; y++)
469 { 988 {
532############################################################################# 1051#############################################################################
533 1052
534MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 1053MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
535 1054
536SV * 1055SV *
537make_histograms (SV *ar) 1056extract_features (SV *ar)
538 CODE: 1057 CODE:
539{ 1058{
540 int i; 1059 int i;
541 AV *av, *result; 1060 AV *av, *result;
542 1061
543 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 1062 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
544 croak ("Not an array ref as first argument to make_histogram"); 1063 croak ("Not an array ref as first argument to extract_features");
545 1064
546 av = (AV *) SvRV (ar); 1065 av = (AV *) SvRV (ar);
547 result = newAV (); 1066 result = newAV ();
548 1067
549 for (i = 0; i <= av_len (av); ++i) 1068 for (i = 0; i <= av_len (av); ++i)
550 { 1069 {
551 const int HISTSIZE = 64;
552
553 int j;
554 SV *sv = *av_fetch (av, i, 1); 1070 SV *sv = *av_fetch (av, i, 1);
555 STRLEN len;
556 char *buf = SvPVbyte (sv, len);
557
558 int tmphist[HISTSIZE];
559 float *hist;
560
561 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); 1071 SV *histsv = newSV (9 * sizeof (float) + 1);
1072
562 SvPOK_on (histsv); 1073 SvPOK_on (histsv);
563 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 1074 SvCUR_set (histsv, 9 * sizeof (float));
564 hist = (float *)SvPVX (histsv); 1075 float *hist = (float *)SvPVX (histsv);
565 1076
566 Zero (tmphist, sizeof (tmphist), char); 1077 struct feature f_h, f_s, f_v;
1078 feature_init (&f_h);
1079 feature_init (&f_s);
1080 feature_init (&f_v);
567 1081
568 for (j = len; j--; )
569 {
570 unsigned int idx
571 = ((*buf & 0xc0) >> 2)
572 | ((*buf & 0x18) >> 1)
573 | (*buf & 0x03);
574
575 ++tmphist[idx];
576 ++buf;
577 }
578 1082 {
579 for (j = 0; j < HISTSIZE; ++j) 1083 STRLEN len;
580 hist[j] = (float)tmphist[j] / (len + 1e-30); 1084 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
1085 while (len >= 3)
1086 {
1087 unsigned int r, g, b, h, s, v;
1088 r = *buf++; g = *buf++; b = *buf++;
1089 rgb_to_hsv (r, g, b, &h, &s, &v);
1090
1091 feature_update_pass_1 (&f_h, h);
1092 feature_update_pass_1 (&f_s, s);
1093 feature_update_pass_1 (&f_v, v);
1094
1095 len -= 3;
1096 }
1097
1098 feature_finish_pass_1 (&f_h);
1099 feature_finish_pass_1 (&f_s);
1100 feature_finish_pass_1 (&f_v);
1101 }
1102
1103 {
1104 STRLEN len;
1105 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
1106 while (len >= 3)
1107 {
1108 unsigned int r, g, b, h, s, v;
1109 r = *buf++; g = *buf++; b = *buf++;
1110 rgb_to_hsv (r, g, b, &h, &s, &v);
1111
1112 feature_update_pass_2 (&f_h, h);
1113 feature_update_pass_2 (&f_s, s);
1114 feature_update_pass_2 (&f_v, v);
1115
1116 len -= 3;
1117 }
1118
1119 feature_finish_pass_2 (&f_h);
1120 feature_finish_pass_2 (&f_s);
1121 feature_finish_pass_2 (&f_v);
1122 }
1123
1124 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
1125 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
1126 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
581 1127
582 av_push (result, histsv); 1128 av_push (result, histsv);
583 } 1129 }
584 1130
585 RETVAL = newRV_noinc ((SV *)result); 1131 RETVAL = newRV_noinc ((SV *)result);
586} 1132}
587 OUTPUT: 1133 OUTPUT:
588 RETVAL 1134 RETVAL
589 1135
590

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines