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Comparing CV/CV.xs (file contents):
Revision 1.11 by root, Tue Feb 8 10:43:44 2005 UTC vs.
Revision 1.70 by root, Thu Jun 8 15:42:03 2023 UTC

1#include "EXTERN.h" 1#include "EXTERN.h"
2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include <string.h>
6#include <setjmp.h>
7#include <math.h>
8
9#include <magic.h>
10
11#include <jpeglib.h>
12#include <jerror.h>
13
14#include <glib.h>
15#include <gtk/gtk.h>
16#include <gdk/gdkx.h>
5#include <gdk-pixbuf/gdk-pixbuf.h> 17#include <gdk-pixbuf/gdk-pixbuf.h>
6 18
7#include <gperl.h> 19#include <gperl.h>
8#include <gtk2perl.h> 20#include <gtk2perl.h>
9 21
10#define IW 80 22#include <assert.h>
11 23
12#define RAND (seed = (seed + 7141) * 54773 % 134456) 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
36#define IW 80 /* MUST match Schnauzer.pm! */
37#define IH 60 /* MUST match Schnauzer.pm! */
13 38
14#define LINELENGTH 240 39#define LINELENGTH 240
15 40
16#define ELLIPSIS "\xe2\x80\xa6" 41#define ELLIPSIS "\xe2\x80\xa6"
17 42
18static guint32 a85_val; 43typedef char *octet_string;
19static guint a85_cnt; 44
20static guchar a85_buf[LINELENGTH], *a85_ptr; 45static magic_t magic_cookie[2]; /* !mime, mime */
46
47struct jpg_err_mgr
48{
49 struct jpeg_error_mgr err;
50 jmp_buf setjmp_buffer;
51};
21 52
22static void 53static void
23a85_init (void) 54cv_error_exit (j_common_ptr cinfo)
24{ 55{
25 a85_cnt = 4; 56 cinfo->err->output_message (cinfo);
26 a85_ptr = a85_buf; 57 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
27} 58}
28 59
29static void 60static void
30a85_push (PerlIO *fp, guchar c) 61cv_error_output (j_common_ptr cinfo)
31{ 62{
32 a85_val = a85_val << 8 | c; 63 char msg[JMSG_LENGTH_MAX];
33 64
34 if (!--a85_cnt) 65 cinfo->err->format_message (cinfo, msg);
35 {
36 a85_cnt = 4;
37 if (a85_val)
38 {
39 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
40 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
41 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
42 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
43 a85_ptr[0] = (a85_val ) + 33;
44 66
45 a85_ptr += 5; 67 fprintf (stderr, "JPEG decoding error: %s\n", msg);
46 } 68 return;
47 else
48 *a85_ptr++ = 'z';
49
50 if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7)
51 {
52 *a85_ptr++ = '\n';
53 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
54 a85_ptr = a85_buf;
55 }
56 }
57
58}
59
60static void
61a85_finish (PerlIO *fp)
62{
63 while (a85_cnt != 4)
64 a85_push (fp, 0);
65
66 *a85_ptr++ = '~'; // probably buggy end-marker
67 *a85_ptr++ = '>'; // probably buggy end-marker
68 *a85_ptr++ = '\n';
69
70 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
71} 69}
72 70
73static void 71static void
74rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, 72rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
75 unsigned int *h, unsigned int *s, unsigned int *v) 73 unsigned int *h, unsigned int *s, unsigned int *v)
… …
95 93
96 *h &= 255; 94 *h &= 255;
97 } 95 }
98} 96}
99 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
153static guint32 a85_val;
154static guint a85_cnt;
155static guchar a85_buf[LINELENGTH], *a85_ptr;
156
157static void
158a85_init (void)
159{
160 a85_cnt = 4;
161 a85_ptr = a85_buf;
162}
163
164static void
165a85_push (PerlIO *fp, guchar c)
166{
167 a85_val = a85_val << 8 | c;
168
169 if (!--a85_cnt)
170 {
171 a85_cnt = 4;
172 if (a85_val)
173 {
174 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
175 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
176 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
177 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
178 a85_ptr[0] = (a85_val ) + 33;
179
180 a85_ptr += 5;
181 }
182 else
183 *a85_ptr++ = 'z';
184
185 if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7)
186 {
187 *a85_ptr++ = '\n';
188 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
189 a85_ptr = a85_buf;
190 }
191 }
192
193}
194
195static void
196a85_finish (PerlIO *fp)
197{
198 while (a85_cnt != 4)
199 a85_push (fp, 0);
200
201 *a85_ptr++ = '~'; // probably buggy end-marker
202 *a85_ptr++ = '>'; // probably buggy end-marker
203 *a85_ptr++ = '\n';
204
205 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
206}
207
100///////////////////////////////////////////////////////////////////////////// 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/////////////////////////////////////////////////////////////////////////////
101 303
102MODULE = Gtk2::CV PACKAGE = Gtk2::CV 304MODULE = Gtk2::CV PACKAGE = Gtk2::CV
103 305
104PROTOTYPES: ENABLE 306PROTOTYPES: ENABLE
105 307
308void
309_exit (int code)
310
311# calculate the common prefix length of two strings
312# missing function in perl. really :)
313int
314common_prefix_length (a, b)
315 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
316 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
317 CODE:
318 RETVAL = 0;
319
320 while (*a == *b && *a)
321 {
322 RETVAL += (*a & 0xc0) != 0x80;
323 a++, b++;
324 }
325
326 OUTPUT:
327 RETVAL
328
329int
330common_prefix_length_byte (a, b)
331 unsigned char *a = (unsigned char *)SvPVbyte_nolen ($arg);
332 unsigned char *b = (unsigned char *)SvPVbyte_nolen ($arg);
333 CODE:
334 RETVAL = 0;
335 while (*a == *b && *a)
336 a++, b++, RETVAL++;
337 OUTPUT:
338 RETVAL
339
340const char *
341magic (SV *path_or_data)
342 ALIAS:
343 magic = 0
344 magic_mime = 1
345 magic_buffer = 2
346 magic_buffer_mime = 3
347 CODE:
348{
349 STRLEN len;
350 char *data = SvPVbyte (path_or_data, len);
351
352 if (!magic_cookie[0])
353 {
354 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
355 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
356 magic_load (magic_cookie[0], 0);
357 magic_load (magic_cookie[1], 0);
358 }
359
360 perlinterp_release ();
361
362 RETVAL = ix & 2
363 ? magic_buffer (magic_cookie[ix & 1], data, len)
364 : magic_file (magic_cookie[ix & 1], data);
365
366 perlinterp_acquire ();
367}
368 OUTPUT:
369 RETVAL
370
371# missing/broken in Gtk2 perl module
372
373void
374gdk_window_clear_hints (GdkWindow *window)
375 CODE:
376 gdk_window_set_geometry_hints (window, 0, 0);
377
378gboolean
379gdk_net_wm_supports (GdkAtom property)
380 CODE:
381#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
382 RETVAL = gdk_net_wm_supports (property);
383#else
384 RETVAL = 0;
385#endif
386 OUTPUT:
387 RETVAL
388
106GdkPixbuf_noinc * 389GdkPixbuf_noinc *
107transpose (GdkPixbuf *pb) 390dealpha_expose (GdkPixbuf *pb)
108 CODE: 391 CODE:
392 perlinterp_release ();
109{ 393{
110 int w = gdk_pixbuf_get_width (pb); 394 int w = gdk_pixbuf_get_width (pb);
111 int h = gdk_pixbuf_get_height (pb); 395 int h = gdk_pixbuf_get_height (pb);
112 int bpp = gdk_pixbuf_get_n_channels (pb); 396 int bpp = gdk_pixbuf_get_n_channels (pb);
113 int x, y, i; 397 int x, y, i;
114 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 398 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
115 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 399 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
116 400
117 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); 401 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
118 402
119 dst = gdk_pixbuf_get_pixels (RETVAL); 403 dst = gdk_pixbuf_get_pixels (RETVAL);
120 dstr = gdk_pixbuf_get_rowstride (RETVAL); 404 dstr = gdk_pixbuf_get_rowstride (RETVAL);
121 405
122 for (y = 0; y < h; y++)
123 for (x = 0; x < w; x++) 406 for (x = 0; x < w; x++)
407 for (y = 0; y < h; y++)
124 for (i = 0; i < bpp; i++) 408 for (i = 0; i < 3; i++)
125 dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; 409 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
126} 410}
411 perlinterp_acquire ();
127 OUTPUT: 412 OUTPUT:
128 RETVAL 413 RETVAL
129 414
130GdkPixbuf_noinc * 415GdkPixbuf_noinc *
131flop (GdkPixbuf *pb) 416rotate (GdkPixbuf *pb, int angle)
132 CODE: 417 CODE:
133{ 418 perlinterp_release ();
134 int w = gdk_pixbuf_get_width (pb); 419 if (angle < 0)
135 int h = gdk_pixbuf_get_height (pb); 420 angle += 360;
136 int bpp = gdk_pixbuf_get_n_channels (pb); 421 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
137 int x, y, i; 422 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
138 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 423 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
139 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 424 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
140 425 : angle);
141 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); 426 perlinterp_acquire ();
142
143 dst = gdk_pixbuf_get_pixels (RETVAL);
144 dstr = gdk_pixbuf_get_rowstride (RETVAL);
145
146 for (y = 0; y < h; y++)
147 for (x = 0; x < w; x++)
148 for (i = 0; i < bpp; i++)
149 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
150}
151 OUTPUT: 427 OUTPUT:
152 RETVAL 428 RETVAL
153 429
430const char *
431filetype (SV *image_data)
432 CODE:
433{
434 STRLEN data_len;
435 U8 *data = SvPVbyte (image_data, data_len);
436 static const unsigned char jxl_header[] = {
437 0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a
438 };
439
440 if (data_len >= 20
441 && data[0] == 0xff
442 && data[1] == 0xd8
443 && data[2] == 0xff)
444 RETVAL = "image/jpeg";
445 else if (data_len >= 12
446 && data[ 0] == (U8)'R'
447 && data[ 1] == (U8)'I'
448 && data[ 2] == (U8)'F'
449 && data[ 3] == (U8)'F'
450 && data[ 8] == (U8)'W'
451 && data[ 9] == (U8)'E'
452 && data[10] == (U8)'B'
453 && data[11] == (U8)'P')
454 RETVAL = "image/webp";
455 else if (data_len >= 16
456 && data[ 0] == 0x89
457 && data[ 1] == (U8)'P'
458 && data[ 2] == (U8)'N'
459 && data[ 3] == (U8)'G'
460 && data[ 4] == 0x0d
461 && data[ 5] == 0x0a
462 && data[ 6] == 0x1a
463 && data[ 7] == 0x0a)
464 RETVAL = "image/png";
465 else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0)
466 RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck
467 else if (data_len >= 2
468 && data[0] == 0xff
469 && data[1] == 0x0a)
470 RETVAL = "image/jxl";
471 else if (data_len >= 13
472 && data[0] == 'G'
473 && data[1] == 'I'
474 && data[2] == 'F'
475 && data[3] == '8'
476 //&& (data[4] == '7' || data[4] == '9')
477 && data[5] == 'a')
478 {
479 RETVAL = "image/gif";
480
481 // now see if its animated - we require the netscape application header for this
482 int ofs = 13;
483
484 if (data[10] & 0x80)
485 ofs += (1 << ((data[10] & 7) + 1)) * 3;
486
487 if (data_len >= ofs + 2 + 1 + 11)
488 {
489
490 // skip a graphic control extension block. we assume
491 // there is at most one such block - while the NAB
492 // has to come firstz, some files do not obey this
493 if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
494 ofs += 3 + data[ofs + 2] + 1;
495
496 if (data_len >= ofs + 2 + 1 + 11)
497 if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
498 RETVAL = "video/gif";
499 }
500 }
501 else if (data_len >= 0x8000 + 6
502 && data[0x8000+1] == (U8)'B'
503 && data[0x8000+2] == (U8)'E'
504 && data[0x8000+3] == (U8)'A'
505 && data[0x8000+4] == (U8)'0'
506 && data[0x8000+5] == (U8)'1')
507 RETVAL = "video/iso-bluray";
508 else if (data_len >= 0x8000 + 6
509 && data[0x8000+1] == (U8)'C'
510 && data[0x8000+2] == (U8)'D'
511 && data[0x8000+3] == (U8)'0'
512 && data[0x8000+4] == (U8)'0'
513 && data[0x8000+5] == (U8)'1')
514 RETVAL = "video/iso9660";
515
516 else
517 XSRETURN_UNDEF;
518}
519 OUTPUT:
520 RETVAL
521
522GdkPixbuf_noinc *
523decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
524 CODE:
525{
526#if WEBP
527 STRLEN data_size;
528 int alpha;
529 WebPData data;
530 WebPDemuxer *demux;
531 WebPIterator iter;
532 WebPDecoderConfig config;
533 int inw, inh;
534
535 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
536 data.size = data_size;
537
538 perlinterp_release ();
539
540 RETVAL = 0;
541
542 if (!(demux = WebPDemux (&data)))
543 goto err_demux;
544
545 if (!WebPDemuxGetFrame (demux, 1, &iter))
546 goto err_iter;
547
548 if (!WebPInitDecoderConfig (&config))
549 goto err_iter;
550
551 config.options.use_threads = 1;
552
553 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
554 goto err_iter;
555
556 inw = config.input.width;
557 inh = config.input.height;
558
559 if (thumbnail)
560 {
561 if (inw * ih > inh * iw)
562 ih = (iw * inh + inw - 1) / inw;
563 else
564 iw = (ih * inw + inh - 1) / inh;
565
566 config.options.bypass_filtering = 1;
567 config.options.no_fancy_upsampling = 1;
568
569 config.options.use_scaling = 1;
570 config.options.scaled_width = iw;
571 config.options.scaled_height = ih;
572 }
573 else
574 {
575 iw = inw;
576 ih = inh;
577 }
578
579 alpha = !!config.input.has_alpha;
580
581 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
582 if (!RETVAL)
583 goto err_iter;
584
585 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
586 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
587 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
588 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
589 config.output.is_external_memory = 1;
590
591 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
592 {
593 g_object_unref (RETVAL);
594 RETVAL = 0;
595 goto err_iter;
596 }
597
598 err_iter:
599 WebPDemuxReleaseIterator (&iter);
600 err_demux:
601 WebPDemuxDelete (demux);
602
603 perlinterp_acquire ();
604#else
605 croak ("load_webp: webp not enabled at compile time");
606#endif
607}
608 OUTPUT:
609 RETVAL
610
611GdkPixbuf_noinc *
612decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
613 CODE:
614{
615#if JXL
616 JxlDecoder *dec;
617 JxlBasicInfo info;
618 const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data);
619 size_t avail_in = SvCUR (image_data);
620 const char *error = 0;
621 JxlDecoderStatus status;
622 static void *runner_cache;
623 void *runner = 0;
624
625 RETVAL = 0;
626
627 if (runner_cache)
628 runner = runner_cache;
629 else
630 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
631
632 runner_cache = 0;
633
634 perlinterp_release ();
635
636 dec = JxlDecoderCreate (0);
637
638 error = "JxlDecoderCreate failed";
639 if (!dec)
640 goto done;
641
642 status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
643 error = "JxlDecoderSetParallelRunner failed";
644 if (status != JXL_DEC_SUCCESS)
645 goto done;
646
647 error = "JxlDecoderSubscribeEvents failed";
648 status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE);
649 if (status != JXL_DEC_SUCCESS)
650 goto done;
651
652 status = JxlDecoderSetInput (dec, next_in, avail_in);
653 error = "JxlDecoderSetInput failed";
654 if (status != JXL_DEC_SUCCESS)
655 goto done;
656
657 for (;;)
658 {
659 status = JxlDecoderProcessInput (dec);
660
661 switch (status)
662 {
663 case JXL_DEC_FULL_IMAGE:
664 error = 0;
665 goto done;
666
667 case JXL_DEC_ERROR:
668 error = "JxlDecoderProcessInput failed";
669 goto done;
670
671 case JXL_DEC_NEED_MORE_INPUT:
672 error = "incomplete file";
673 goto done;
674
675 case JXL_DEC_SUCCESS:
676 error = "incomplete decode";
677 goto done;
678
679 case JXL_DEC_BASIC_INFO:
680 {
681 status = JxlDecoderGetBasicInfo (dec, &info);
682 error = "JxlDecoderGetBasicInfo failed";
683 if (status != JXL_DEC_SUCCESS)
684 goto done;
685
686 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
687 error = "unable to allocate pixbuf";
688 if (!RETVAL)
689 goto done;
690
691 JxlPixelFormat format = {
692 info.alpha_bits ? 4 : 3,
693 JXL_TYPE_UINT8,
694 JXL_NATIVE_ENDIAN,
695 gdk_pixbuf_get_rowstride (RETVAL)
696 };
697
698 // cannot use gdk_pixbuf_get_byte_length because that does
699 // not return the size of the buffer, but the size of the buffer without
700 // the last padding bytes. the internal buffer is rowstride * ysize,
701 // and this is what the jxl decoder needs. none of this is documented
702 // in either library, of course.
703
704 status = JxlDecoderSetImageOutBuffer (
705 dec,
706 &format,
707 gdk_pixbuf_get_pixels (RETVAL),
708 gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
709 );
710 error = "JxlDecoderSetImageOutBuffer failed";
711 if (status != JXL_DEC_SUCCESS)
712 goto done;
713 }
714 break;
715
716 default:
717 error = "unexpected event";
718 goto done;
719 }
720 }
721
722 done:
723 if (dec)
724 JxlDecoderDestroy (dec);
725
726 perlinterp_acquire ();
727
728 if (runner_cache)
729 JxlThreadParallelRunnerDestroy (runner);
730
731 runner_cache = runner;
732
733 if (error)
734 {
735 if (RETVAL)
736 g_object_unref (RETVAL);
737
738 croak ("load_jxl: %s (status %d)", error, status);
739 }
740#else
741 croak ("load_jxl: jpeg-xl not enabled at compile time");
742#endif
743}
744 OUTPUT:
745 RETVAL
746
747GdkPixbuf_noinc *
748decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
749 CODE:
750{
751 struct jpeg_decompress_struct cinfo;
752 struct jpg_err_mgr jerr;
753 int rs;
754 volatile GdkPixbuf *pb = 0;
755 STRLEN data_len;
756 guchar *data = SvPVbyte (image_data, data_len);
757
758 RETVAL = 0;
759
760 perlinterp_release ();
761
762 cinfo.err = jpeg_std_error (&jerr.err);
763
764 jerr.err.error_exit = cv_error_exit;
765 jerr.err.output_message = cv_error_output;
766
767 if ((rs = setjmp (jerr.setjmp_buffer)))
768 {
769 jpeg_destroy_decompress (&cinfo);
770
771 if (pb)
772 g_object_unref ((gpointer)pb);
773
774 perlinterp_acquire ();
775 XSRETURN_UNDEF;
776 }
777
778 if (!data_len)
779 longjmp (jerr.setjmp_buffer, 4);
780
781 jpeg_create_decompress (&cinfo);
782 cv_jpeg_mem_src (&cinfo, data, data_len);
783
784 jpeg_read_header (&cinfo, TRUE);
785
786 cinfo.dct_method = JDCT_DEFAULT;
787 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
788 cinfo.do_block_smoothing = FALSE;
789 cinfo.out_color_space = JCS_RGB;
790 cinfo.quantize_colors = FALSE;
791
792 cinfo.scale_num = 1;
793 cinfo.scale_denom = 1;
794
795 jpeg_calc_output_dimensions (&cinfo);
796
797 if (thumbnail)
798 {
799 cinfo.dct_method = JDCT_FASTEST;
800 cinfo.do_fancy_upsampling = FALSE;
801
802 while (cinfo.scale_denom < 8
803 && cinfo.output_width >= iw*4
804 && cinfo.output_height >= ih*4)
805 {
806 cinfo.scale_denom <<= 1;
807 jpeg_calc_output_dimensions (&cinfo);
808 }
809 }
810
811 if (cinfo.output_components != 3)
812 longjmp (jerr.setjmp_buffer, 3);
813
814 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
815 {
816 cinfo.out_color_space = JCS_CMYK;
817 cinfo.output_components = 4;
818 }
819
820 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
821 if (!RETVAL)
822 longjmp (jerr.setjmp_buffer, 2);
823
824 data = gdk_pixbuf_get_pixels (RETVAL);
825 rs = gdk_pixbuf_get_rowstride (RETVAL);
826
827 jpeg_start_decompress (&cinfo);
828
829 while (cinfo.output_scanline < cinfo.output_height)
830 {
831 int remaining = cinfo.output_height - cinfo.output_scanline;
832 JSAMPROW rp[4];
833
834 rp [0] = data + cinfo.output_scanline * rs;
835 rp [1] = (guchar *)rp [0] + rs;
836 rp [2] = (guchar *)rp [1] + rs;
837 rp [3] = (guchar *)rp [2] + rs;
838
839 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
840 }
841
842 if (cinfo.out_color_space == JCS_CMYK)
843 {
844 guchar *end = data + cinfo.output_height * rs;
845
846 while (data < end)
847 {
848 U32 c = data [0];
849 U32 m = data [1];
850 U32 y = data [2];
851 U32 k = data [3];
852
853 if (0)
854 if (cinfo.Adobe_transform == 2)
855 {
856 c ^= 0xff;
857 m ^= 0xff;
858 y ^= 0xff;
859 k ^= 0xff;
860 }
861
862 data [0] = (c * k + 0x80) / 0xff;
863 data [1] = (m * k + 0x80) / 0xff;
864 data [2] = (y * k + 0x80) / 0xff;
865 data [3] = 0xff;
866
867 data += 4;
868 }
869 }
870
871 jpeg_finish_decompress (&cinfo);
872 jpeg_destroy_decompress (&cinfo);
873 perlinterp_acquire ();
874}
875 OUTPUT:
876 RETVAL
877
878void
879compare (GdkPixbuf *a, GdkPixbuf *b)
880 PPCODE:
881 perlinterp_release ();
882{
883 int w = gdk_pixbuf_get_width (a);
884 int h = gdk_pixbuf_get_height (a);
885
886 int sa = gdk_pixbuf_get_rowstride (a);
887 int sb = gdk_pixbuf_get_rowstride (b);
888
889 guchar *pa = gdk_pixbuf_get_pixels (a);
890 guchar *pb = gdk_pixbuf_get_pixels (b);
891
892 int x, y;
893
894 assert (w == gdk_pixbuf_get_width (b));
895 assert (h == gdk_pixbuf_get_height (b));
896
897 assert (gdk_pixbuf_get_n_channels (a) == 3);
898 assert (gdk_pixbuf_get_n_channels (b) == 3);
899
900 double diff = 0.;
901 int peak = 0;
902
903 if (w && h)
904 for (y = 0; y < h; y++)
905 {
906 guchar *pa_ = pa + y * sa;
907 guchar *pb_ = pb + y * sb;
908
909 for (x = 0; x < w; x++)
910 {
911 int d;
912
913 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
914 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
915 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
916 }
917 }
918
919 perlinterp_acquire ();
920
921 EXTEND (SP, 2);
922 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
923 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
924}
925
154############################################################################# 926#############################################################################
155 927
156MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 928MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
157 929
930# currently only works for filenames (octet strings)
931
932SV *
933foldcase (SV *pathsv)
934 PROTOTYPE: $
935 CODE:
936{
937 STRLEN plen;
938 U8 *path = (U8 *)SvPV (pathsv, plen);
939 U8 *pend = path + plen;
940 U8 dst [plen * 8 * 3], *dstp = dst;
941
942 while (path < pend)
943 {
944 U8 ch = *path;
945
946 if (ch >= 'a' && ch <= 'z')
947 *dstp++ = *path++;
948 else if (ch >= 'A' && ch <= 'Z')
949 *dstp++ = *path++ + ('a' - 'A');
950 else if (ch >= '0' && ch <= '9')
951 {
952 /* version sort, up to 8 digits */
953 STRLEN el, nl = 0;
954 while (*path >= '0' && *path <= '9' && path < pend)
955 path++, nl++;
956
957 for (el = nl; el < 8; el++)
958 *dstp++ = '0';
959
960 memcpy (dstp, path - nl, nl);
961 dstp += nl;
962 }
963 else
964 *dstp++ = *path++;
965#if 0
966 else
967 {
968 STRLEN cl;
969 to_utf8_fold (path, dstp, &cl);
970 dstp += cl;
971 path += is_utf8_char (path);
972 }
973#endif
974 }
975
976 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
977}
978 OUTPUT:
979 RETVAL
980
158GdkPixbuf_noinc * 981GdkPixbuf_noinc *
159p7_to_pb (int w, int h, guchar *src) 982p7_to_pb (int w, int h, SV *src_sv)
983 PROTOTYPE: @
160 CODE: 984 CODE:
161{ 985{
162 int x, y; 986 int x, y;
163 guchar *dst, *d; 987 guchar *dst, *d;
164 int dstr; 988 int dstr;
989 guchar *src = (guchar *)SvPVbyte_nolen (src_sv);
165 990
166 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); 991 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
167 dst = gdk_pixbuf_get_pixels (RETVAL); 992 dst = gdk_pixbuf_get_pixels (RETVAL);
168 dstr = gdk_pixbuf_get_rowstride (RETVAL); 993 dstr = gdk_pixbuf_get_rowstride (RETVAL);
169 994
… …
178 } 1003 }
179} 1004}
180 OUTPUT: 1005 OUTPUT:
181 RETVAL 1006 RETVAL
182 1007
1008#############################################################################
1009
1010MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
1011
1012void
1013dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
1014 CODE:
1015{
1016 int w = gdk_pixbuf_get_width (pb);
1017 int h = gdk_pixbuf_get_height (pb);
1018 int x, y, i;
1019 guchar *dst;
1020 int bpp = gdk_pixbuf_get_n_channels (pb);
1021 guchar *src = gdk_pixbuf_get_pixels (pb);
1022 int sstr = gdk_pixbuf_get_rowstride (pb);
1023
1024 a85_init ();
1025
1026 for (y = 0; y < h; y++)
1027 for (x = 0; x < w; x++)
1028 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
1029 a85_push (fp, src [x * bpp + y * sstr + i]);
1030
1031 a85_finish (fp);
1032}
1033
1034void
1035dump_binary (PerlIO *fp, GdkPixbuf *pb)
1036 CODE:
1037{
1038 int w = gdk_pixbuf_get_width (pb);
1039 int h = gdk_pixbuf_get_height (pb);
1040 int x, y, i;
1041 guchar *dst;
1042 int bpp = gdk_pixbuf_get_n_channels (pb);
1043 guchar *src = gdk_pixbuf_get_pixels (pb);
1044 int sstr = gdk_pixbuf_get_rowstride (pb);
1045
1046 for (y = 0; y < h; y++)
1047 for (x = 0; x < w; x++)
1048 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
1049 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
1050}
1051
1052#############################################################################
1053
1054MODULE = Gtk2::CV PACKAGE = Gtk2::CV
1055
183SV * 1056SV *
184pb_to_p7 (GdkPixbuf *pb) 1057pb_to_hv84 (GdkPixbuf *pb)
185 CODE: 1058 CODE:
186{ 1059{
187 int w = gdk_pixbuf_get_width (pb); 1060 int w = gdk_pixbuf_get_width (pb);
188 int h = gdk_pixbuf_get_height (pb); 1061 int h = gdk_pixbuf_get_height (pb);
189 int x, y; 1062 int x, y;
190 guchar *dst; 1063 guchar *dst;
191 int bpp = gdk_pixbuf_get_n_channels (pb); 1064 int bpp = gdk_pixbuf_get_n_channels (pb);
192 guchar *src = gdk_pixbuf_get_pixels (pb); 1065 guchar *src = gdk_pixbuf_get_pixels (pb);
193 int sstr = gdk_pixbuf_get_rowstride (pb); 1066 int sstr = gdk_pixbuf_get_rowstride (pb);
194 int Er[IW], Eg[IW], Eb[IW];
195 int seed = 77;
196
197 RETVAL = newSV (w * h);
198 SvPOK_only (RETVAL);
199 SvCUR_set (RETVAL, w * h);
200
201 dst = SvPVX (RETVAL);
202
203 memset (Er, 0, sizeof (int) * IW);
204 memset (Eg, 0, sizeof (int) * IW);
205 memset (Eb, 0, sizeof (int) * IW);
206
207 /* some primitive error distribution + random dithering */
208
209 for (y = 0; y < h; y++)
210 {
211 int er = 0, eg = 0, eb = 0;
212
213 for (x = 0; x < w; x++)
214 {
215 int r, g, b;
216 guchar *p = src + x * bpp + y * sstr;
217
218 r = ((p[0] + er + Er[x]) * 7 + 128) / 255;
219 g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255;
220 b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255;
221
222 r = r > 7 ? 7 : r < 0 ? 0 : r;
223 g = g > 7 ? 7 : g < 0 ? 0 : g;
224 b = b > 3 ? 3 : b < 0 ? 0 : b;
225
226 er += p[0] - (r * 255 + 4) / 7;
227 eg += p[1] - (g * 255 + 4) / 7;
228 eb += p[2] - (b * 255 + 2) / 3;
229
230 Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3;
231 Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3;
232 Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3;
233
234 *dst++ = r << 5 | g << 2 | b;
235 }
236 }
237}
238 OUTPUT:
239 RETVAL
240
241SV *
242make_histogram (SV *ar)
243 CODE:
244{
245 int i;
246 AV *av, *result;
247
248 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
249 croak ("Not an array ref as first argument to make_histogram");
250
251 av = (AV *) SvRV (ar);
252 result = newAV ();
253
254 for (i = 0; i <= av_len (av); ++i)
255 {
256 int bigst, j;
257 SV *sv = *av_fetch (av, i, 1);
258 STRLEN len;
259 char *buf = SvPVbyte (sv, len);
260
261 int tmphist[256];
262 char *hist;
263
264 SV *histsv = newSV (257);
265 sv_upgrade (histsv, SVt_PV);
266 SvCUR_set (histsv, 256);
267 hist = SvPV_nolen (histsv);
268
269 Zero (tmphist, 256, int);
270
271 while (len--)
272 ++tmphist[(unsigned char)*buf++];
273
274 bigst = 1;
275 for (j = 0; j < 256; ++j)
276 if (tmphist[j] > bigst)
277 bigst = tmphist[j];
278
279 for (j = 0; j < 256; ++j)
280 hist[j] = tmphist[j] * 255 / bigst;
281
282 av_push (result, histsv);
283 }
284
285 RETVAL = newRV_noinc ((SV *)result);
286}
287 OUTPUT:
288 RETVAL
289
290
291
292#############################################################################
293
294MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
295
296void
297dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
298 CODE:
299{
300 int w = gdk_pixbuf_get_width (pb);
301 int h = gdk_pixbuf_get_height (pb);
302 int x, y, i;
303 guchar *dst;
304 int bpp = gdk_pixbuf_get_n_channels (pb);
305 guchar *src = gdk_pixbuf_get_pixels (pb);
306 int sstr = gdk_pixbuf_get_rowstride (pb);
307
308 a85_init ();
309
310 for (y = 0; y < h; y++)
311 for (x = 0; x < w; x++)
312 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
313 a85_push (fp, src [x * bpp + y * sstr + i]);
314
315 a85_finish (fp);
316}
317
318void
319dump_binary (PerlIO *fp, GdkPixbuf *pb)
320 CODE:
321{
322 int w = gdk_pixbuf_get_width (pb);
323 int h = gdk_pixbuf_get_height (pb);
324 int x, y, i;
325 guchar *dst;
326 int bpp = gdk_pixbuf_get_n_channels (pb);
327 guchar *src = gdk_pixbuf_get_pixels (pb);
328 int sstr = gdk_pixbuf_get_rowstride (pb);
329
330 for (y = 0; y < h; y++)
331 for (x = 0; x < w; x++)
332 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
333 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
334}
335
336#############################################################################
337
338MODULE = Gtk2::CV PACKAGE = Gtk2::CV
339
340SV *
341pb_to_hv84 (GdkPixbuf *pb)
342 CODE:
343{
344 int w = gdk_pixbuf_get_width (pb);
345 int h = gdk_pixbuf_get_height (pb);
346 int x, y;
347 guchar *dst;
348 int bpp = gdk_pixbuf_get_n_channels (pb);
349 guchar *src = gdk_pixbuf_get_pixels (pb);
350 int sstr = gdk_pixbuf_get_rowstride (pb);
351 1067
352 RETVAL = newSV (6 * 8 * 12 / 8); 1068 RETVAL = newSV (6 * 8 * 12 / 8);
353 SvPOK_only (RETVAL); 1069 SvPOK_only (RETVAL);
354 SvCUR_set (RETVAL, 6 * 8 * 12 / 8); 1070 SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
355 1071
356 dst = SvPVX (RETVAL); 1072 dst = (guchar *)SvPVX (RETVAL);
357 1073
358 /* some primitive error distribution + random dithering */ 1074 /* some primitive error distribution + random dithering */
359 1075
360 for (y = 0; y < h; y++) 1076 for (y = 0; y < h; y++)
361 { 1077 {
… …
419 } 1135 }
420} 1136}
421 OUTPUT: 1137 OUTPUT:
422 RETVAL 1138 RETVAL
423 1139
1140#############################################################################
424 1141
1142MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
425 1143
1144SV *
1145extract_features (SV *ar)
1146 CODE:
1147{
1148 int i;
1149 AV *av, *result;
1150
1151 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
1152 croak ("Not an array ref as first argument to extract_features");
1153
1154 av = (AV *) SvRV (ar);
1155 result = newAV ();
1156
1157 for (i = 0; i <= av_len (av); ++i)
1158 {
1159 SV *sv = *av_fetch (av, i, 1);
1160 SV *histsv = newSV (9 * sizeof (float) + 1);
1161
1162 SvPOK_on (histsv);
1163 SvCUR_set (histsv, 9 * sizeof (float));
1164 float *hist = (float *)SvPVX (histsv);
1165
1166 struct feature f_h, f_s, f_v;
1167 feature_init (&f_h);
1168 feature_init (&f_s);
1169 feature_init (&f_v);
1170
1171 {
1172 STRLEN len;
1173 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
1174 while (len >= 3)
1175 {
1176 unsigned int r, g, b, h, s, v;
1177 r = *buf++; g = *buf++; b = *buf++;
1178 rgb_to_hsv (r, g, b, &h, &s, &v);
1179
1180 feature_update_pass_1 (&f_h, h);
1181 feature_update_pass_1 (&f_s, s);
1182 feature_update_pass_1 (&f_v, v);
1183
1184 len -= 3;
1185 }
1186
1187 feature_finish_pass_1 (&f_h);
1188 feature_finish_pass_1 (&f_s);
1189 feature_finish_pass_1 (&f_v);
1190 }
1191
1192 {
1193 STRLEN len;
1194 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
1195 while (len >= 3)
1196 {
1197 unsigned int r, g, b, h, s, v;
1198 r = *buf++; g = *buf++; b = *buf++;
1199 rgb_to_hsv (r, g, b, &h, &s, &v);
1200
1201 feature_update_pass_2 (&f_h, h);
1202 feature_update_pass_2 (&f_s, s);
1203 feature_update_pass_2 (&f_v, v);
1204
1205 len -= 3;
1206 }
1207
1208 feature_finish_pass_2 (&f_h);
1209 feature_finish_pass_2 (&f_s);
1210 feature_finish_pass_2 (&f_v);
1211 }
1212
1213 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
1214 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
1215 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
1216
1217 av_push (result, histsv);
1218 }
1219
1220 RETVAL = newRV_noinc ((SV *)result);
1221}
1222 OUTPUT:
1223 RETVAL
1224

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