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Comparing CV/CV.xs (file contents):
Revision 1.27 by root, Sun Aug 21 02:23:52 2005 UTC vs.
Revision 1.67 by root, Fri May 12 01:23:57 2023 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
9#include <glib.h> 14#include <glib.h>
10#include <gtk/gtk.h> 15#include <gtk/gtk.h>
16#include <gdk/gdkx.h>
11#include <gdk-pixbuf/gdk-pixbuf.h> 17#include <gdk-pixbuf/gdk-pixbuf.h>
12 18
13#include <gperl.h> 19#include <gperl.h>
14#include <gtk2perl.h> 20#include <gtk2perl.h>
15 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
16#define IW 80 /* MUST match Schnauer.pm! */ 36#define IW 80 /* MUST match Schnauzer.pm! */
17#define IH 60 /* MUST match Schnauer.pm! */ 37#define IH 60 /* MUST match Schnauzer.pm! */
18
19#define RAND (seed = (seed + 7141) * 54773 % 134456)
20 38
21#define LINELENGTH 240 39#define LINELENGTH 240
22 40
23#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 */
24 46
25struct jpg_err_mgr 47struct jpg_err_mgr
26{ 48{
27 struct jpeg_error_mgr err; 49 struct jpeg_error_mgr err;
28 jmp_buf setjmp_buffer; 50 jmp_buf setjmp_buffer;
29}; 51};
30 52
31static void 53static void
32cv_error_exit (j_common_ptr cinfo) 54cv_error_exit (j_common_ptr cinfo)
33{ 55{
56 cinfo->err->output_message (cinfo);
34 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); 57 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
35} 58}
36 59
37static void 60static void
38cv_error_output (j_common_ptr cinfo) 61cv_error_output (j_common_ptr cinfo)
39{ 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);
40 return; 68 return;
41} 69}
42 70
43static void 71static void
44rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, 72rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
… …
65 93
66 *h &= 255; 94 *h &= 255;
67 } 95 }
68} 96}
69 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
70static guint32 a85_val; 153static guint32 a85_val;
71static guint a85_cnt; 154static guint a85_cnt;
72static guchar a85_buf[LINELENGTH], *a85_ptr; 155static guchar a85_buf[LINELENGTH], *a85_ptr;
73 156
74static void 157static void
… …
86 if (!--a85_cnt) 169 if (!--a85_cnt)
87 { 170 {
88 a85_cnt = 4; 171 a85_cnt = 4;
89 if (a85_val) 172 if (a85_val)
90 { 173 {
91 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; 174 a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
92 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; 175 a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
93 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; 176 a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
94 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; 177 a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
95 a85_ptr[0] = (a85_val ) + 33; 178 a85_ptr[0] = (a85_val ) + 33;
96 179
97 a85_ptr += 5; 180 a85_ptr += 5;
98 } 181 }
… …
121 204
122 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 205 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
123} 206}
124 207
125///////////////////////////////////////////////////////////////////////////// 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/////////////////////////////////////////////////////////////////////////////
126 303
127MODULE = Gtk2::CV PACKAGE = Gtk2::CV 304MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128 305
129PROTOTYPES: ENABLE 306PROTOTYPES: ENABLE
130 307
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
329const char *
330magic (SV *path_or_data)
331 ALIAS:
332 magic = 0
333 magic_mime = 1
334 magic_buffer = 2
335 magic_buffer_mime = 3
336 CODE:
337{
338 STRLEN len;
339 char *data = SvPVbyte (path_or_data, len);
340
341 if (!magic_cookie[0])
342 {
343 magic_cookie[0] = magic_open (MAGIC_SYMLINK);
344 magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE);
345 magic_load (magic_cookie[0], 0);
346 magic_load (magic_cookie[1], 0);
347 }
348
349 perlinterp_release ();
350
351 RETVAL = ix & 2
352 ? magic_buffer (magic_cookie[ix & 1], data, len)
353 : magic_file (magic_cookie[ix & 1], data);
354
355 perlinterp_acquire ();
356}
357 OUTPUT:
358 RETVAL
359
131# missing in Gtk2 perl module 360# missing/broken in Gtk2 perl module
361
362void
363gdk_window_clear_hints (GdkWindow *window)
364 CODE:
365 gdk_window_set_geometry_hints (window, 0, 0);
132 366
133gboolean 367gboolean
134gdk_net_wm_supports (GdkAtom property) 368gdk_net_wm_supports (GdkAtom property)
135 CODE: 369 CODE:
136#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) 370#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
… …
142 RETVAL 376 RETVAL
143 377
144GdkPixbuf_noinc * 378GdkPixbuf_noinc *
145dealpha_expose (GdkPixbuf *pb) 379dealpha_expose (GdkPixbuf *pb)
146 CODE: 380 CODE:
381 perlinterp_release ();
147{ 382{
148 int w = gdk_pixbuf_get_width (pb); 383 int w = gdk_pixbuf_get_width (pb);
149 int h = gdk_pixbuf_get_height (pb); 384 int h = gdk_pixbuf_get_height (pb);
150 int bpp = gdk_pixbuf_get_n_channels (pb); 385 int bpp = gdk_pixbuf_get_n_channels (pb);
151 int x, y, i; 386 int x, y, i;
… …
160 for (x = 0; x < w; x++) 395 for (x = 0; x < w; x++)
161 for (y = 0; y < h; y++) 396 for (y = 0; y < h; y++)
162 for (i = 0; i < 3; i++) 397 for (i = 0; i < 3; i++)
163 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; 398 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
164} 399}
400 perlinterp_acquire ();
165 OUTPUT: 401 OUTPUT:
166 RETVAL 402 RETVAL
167 403
168GdkPixbuf_noinc * 404GdkPixbuf_noinc *
169transpose (GdkPixbuf *pb) 405rotate (GdkPixbuf *pb, int angle)
170 CODE: 406 CODE:
171{ 407 perlinterp_release ();
172 int w = gdk_pixbuf_get_width (pb); 408 if (angle < 0)
173 int h = gdk_pixbuf_get_height (pb); 409 angle += 360;
174 int bpp = gdk_pixbuf_get_n_channels (pb); 410 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
175 int x, y, i; 411 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
176 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 412 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
177 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 413 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
178 414 : angle);
179 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); 415 perlinterp_acquire ();
180
181 dst = gdk_pixbuf_get_pixels (RETVAL);
182 dstr = gdk_pixbuf_get_rowstride (RETVAL);
183
184 for (y = 0; y < h; y++)
185 for (x = 0; x < w; x++)
186 for (i = 0; i < bpp; i++)
187 dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];
188}
189 OUTPUT: 416 OUTPUT:
190 RETVAL 417 RETVAL
191 418
419const char *
420filetype (SV *image_data)
421 CODE:
422{
423 STRLEN data_len;
424 U8 *data = SvPVbyte (image_data, data_len);
425 static const unsigned char jxl_header[] = {
426 0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a
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"; // todo: might want to use JxlSignatureCheck
456 else if (data_len >= 2
457 && data[0] == 0xff
458 && data[1] == 0x0a)
459 RETVAL = "image/jxl";
460 else if (data_len >= 13
461 && data[0] == 'G'
462 && data[1] == 'I'
463 && data[2] == 'F'
464 && data[3] == '8'
465 //&& (data[4] == '7' || data[4] == '9')
466 && data[5] == 'a')
467 {
468 RETVAL = "image/gif";
469
470 // now see if its animated - we require the netscape application header for this
471 int ofs = 13;
472
473 if (data[10] & 0x80)
474 ofs += (1 << ((data[10] & 7) + 1)) * 3;
475
476 if (data_len >= ofs + 2 + 1 + 11)
477 {
478
479 // skip a graphic control extension block. we assume
480 // there is at most one such block - while the NAB
481 // has to come firstz, some files do not obey this
482 if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
483 ofs += 3 + data[ofs + 2] + 1;
484
485 if (data_len >= ofs + 2 + 1 + 11)
486 if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
487 RETVAL = "video/gif";
488 }
489 }
490 else if (data_len >= 0x8000 + 6
491 && data[0x8000+0] == 0
492 && data[0x8000+1] == (U8)'B'
493 && data[0x8000+2] == (U8)'E'
494 && data[0x8000+3] == (U8)'A'
495 && data[0x8000+4] == (U8)'0'
496 && data[0x8000+5] == (U8)'1')
497 RETVAL = "video/iso-bluray";
498
499 else
500 XSRETURN_UNDEF;
501}
502 OUTPUT:
503 RETVAL
504
192GdkPixbuf_noinc * 505GdkPixbuf_noinc *
193flop (GdkPixbuf *pb) 506decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
194 CODE: 507 CODE:
195{ 508{
196 int w = gdk_pixbuf_get_width (pb); 509#if WEBP
197 int h = gdk_pixbuf_get_height (pb); 510 STRLEN data_size;
198 int bpp = gdk_pixbuf_get_n_channels (pb); 511 int alpha;
512 WebPData data;
513 WebPDemuxer *demux;
514 WebPIterator iter;
515 WebPDecoderConfig config;
199 int x, y, i; 516 int inw, inh;
200 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
201 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
202 517
518 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
519 data.size = data_size;
520
521 perlinterp_release ();
522
523 RETVAL = 0;
524
525 if (!(demux = WebPDemux (&data)))
526 goto err_demux;
527
528 if (!WebPDemuxGetFrame (demux, 1, &iter))
529 goto err_iter;
530
531 if (!WebPInitDecoderConfig (&config))
532 goto err_iter;
533
534 config.options.use_threads = 1;
535
536 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
537 goto err_iter;
538
539 inw = config.input.width;
540 inh = config.input.height;
541
542 if (thumbnail)
543 {
544 if (inw * ih > inh * iw)
545 ih = (iw * inh + inw - 1) / inw;
546 else
547 iw = (ih * inw + inh - 1) / inh;
548
549 config.options.bypass_filtering = 1;
550 config.options.no_fancy_upsampling = 1;
551
552 config.options.use_scaling = 1;
553 config.options.scaled_width = iw;
554 config.options.scaled_height = ih;
555 }
556 else
557 {
558 iw = inw;
559 ih = inh;
560 }
561
562 alpha = !!config.input.has_alpha;
563
203 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); 564 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
565 if (!RETVAL)
566 goto err_iter;
204 567
205 dst = gdk_pixbuf_get_pixels (RETVAL); 568 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
569 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
206 dstr = gdk_pixbuf_get_rowstride (RETVAL); 570 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
571 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
572 config.output.is_external_memory = 1;
207 573
208 for (y = 0; y < h; y++) 574 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
209 for (x = 0; x < w; x++) 575 {
210 for (i = 0; i < bpp; i++) 576 g_object_unref (RETVAL);
211 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; 577 RETVAL = 0;
578 goto err_iter;
579 }
580
581 err_iter:
582 WebPDemuxReleaseIterator (&iter);
583 err_demux:
584 WebPDemuxDelete (demux);
585
586 perlinterp_acquire ();
587#else
588 croak ("load_webp: webp not enabled at compile time");
589#endif
212} 590}
213 OUTPUT: 591 OUTPUT:
214 RETVAL 592 RETVAL
215 593
216GdkPixbuf_noinc * 594GdkPixbuf_noinc *
217load_jpeg (SV *path, int thumbnail=0) 595decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
596 CODE:
597{
598#if JXL
599 JxlDecoder *dec;
600 JxlBasicInfo info;
601 const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data);
602 size_t avail_in = SvCUR (image_data);
603 const char *error = 0;
604 JxlDecoderStatus status;
605 static void *runner_cache;
606 void *runner = 0;
607
608 RETVAL = 0;
609
610 if (runner_cache)
611 runner = runner_cache;
612 else
613 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
614
615 runner_cache = 0;
616
617 perlinterp_release ();
618
619 dec = JxlDecoderCreate (0);
620
621 error = "JxlDecoderCreate failed";
622 if (!dec)
623 goto done;
624
625 status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
626 error = "JxlDecoderSetParallelRunner failed";
627 if (status != JXL_DEC_SUCCESS)
628 goto done;
629
630 error = "JxlDecoderSubscribeEvents failed";
631 status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE);
632 if (status != JXL_DEC_SUCCESS)
633 goto done;
634
635 status = JxlDecoderSetInput (dec, next_in, avail_in);
636 error = "JxlDecoderSetInput failed";
637 if (status != JXL_DEC_SUCCESS)
638 goto done;
639
640 for (;;)
641 {
642 status = JxlDecoderProcessInput (dec);
643
644 switch (status)
645 {
646 case JXL_DEC_FULL_IMAGE:
647 error = 0;
648 goto done;
649
650 case JXL_DEC_ERROR:
651 error = "JxlDecoderProcessInput failed";
652 goto done;
653
654 case JXL_DEC_NEED_MORE_INPUT:
655 error = "incomplete file";
656 goto done;
657
658 case JXL_DEC_SUCCESS:
659 error = "incomplete decode";
660 goto done;
661
662 case JXL_DEC_BASIC_INFO:
663 {
664 status = JxlDecoderGetBasicInfo (dec, &info);
665 error = "JxlDecoderGetBasicInfo failed";
666 if (status != JXL_DEC_SUCCESS)
667 goto done;
668
669 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
670 error = "unable to allocate pixbuf";
671 if (!RETVAL)
672 goto done;
673
674 JxlPixelFormat format = {
675 info.alpha_bits ? 4 : 3,
676 JXL_TYPE_UINT8,
677 JXL_NATIVE_ENDIAN,
678 gdk_pixbuf_get_rowstride (RETVAL)
679 };
680
681 // cannot use gdk_pixbuf_get_byte_length because that does
682 // not return the size of the buffer, but the size of the buffer without
683 // the last padding bytes. the internal buffer is rowstride * ysize,
684 // and this is what the jxl decoder needs. none of this is documented
685 // in either library, of course.
686
687 status = JxlDecoderSetImageOutBuffer (
688 dec,
689 &format,
690 gdk_pixbuf_get_pixels (RETVAL),
691 gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
692 );
693 error = "JxlDecoderSetImageOutBuffer failed";
694 if (status != JXL_DEC_SUCCESS)
695 goto done;
696 }
697 break;
698
699 default:
700 error = "unexpected event";
701 goto done;
702 }
703 }
704
705 done:
706 if (dec)
707 JxlDecoderDestroy (dec);
708
709 perlinterp_acquire ();
710
711 if (runner_cache)
712 JxlThreadParallelRunnerDestroy (runner);
713
714 runner_cache = runner;
715
716 if (error)
717 {
718 if (RETVAL)
719 g_object_unref (RETVAL);
720
721 croak ("load_jxl: %s (status %d)", error, status);
722 }
723#else
724 croak ("load_jxl: jpeg-xl not enabled at compile time");
725#endif
726}
727 OUTPUT:
728 RETVAL
729
730GdkPixbuf_noinc *
731decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
218 CODE: 732 CODE:
219{ 733{
220 struct jpeg_decompress_struct cinfo; 734 struct jpeg_decompress_struct cinfo;
221 struct jpg_err_mgr jerr; 735 struct jpg_err_mgr jerr;
222 guchar *data;
223 int rs; 736 int rs;
224 FILE *fp;
225 volatile GdkPixbuf *pb = 0; 737 volatile GdkPixbuf *pb = 0;
226 gchar *filename; 738 STRLEN data_len;
739 guchar *data = SvPVbyte (image_data, data_len);
227 740
228 RETVAL = 0; 741 RETVAL = 0;
229 742
230 filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0); 743 perlinterp_release ();
231 fp = fopen (filename, "rb");
232 g_free (filename);
233
234 if (!fp)
235 XSRETURN_UNDEF;
236 744
237 cinfo.err = jpeg_std_error (&jerr.err); 745 cinfo.err = jpeg_std_error (&jerr.err);
238 746
239 jerr.err.error_exit = cv_error_exit; 747 jerr.err.error_exit = cv_error_exit;
240 jerr.err.output_message = cv_error_output; 748 jerr.err.output_message = cv_error_output;
241 749
242 if ((rs = setjmp (jerr.setjmp_buffer))) 750 if ((rs = setjmp (jerr.setjmp_buffer)))
243 { 751 {
244 fclose (fp);
245 jpeg_destroy_decompress (&cinfo); 752 jpeg_destroy_decompress (&cinfo);
246 753
247 if (pb) 754 if (pb)
248 g_object_unref ((gpointer)pb); 755 g_object_unref ((gpointer)pb);
249 756
757 perlinterp_acquire ();
250 XSRETURN_UNDEF; 758 XSRETURN_UNDEF;
251 } 759 }
252 760
761 if (!data_len)
762 longjmp (jerr.setjmp_buffer, 4);
763
253 jpeg_create_decompress (&cinfo); 764 jpeg_create_decompress (&cinfo);
765 cv_jpeg_mem_src (&cinfo, data, data_len);
254 766
255 jpeg_stdio_src (&cinfo, fp);
256 jpeg_read_header (&cinfo, TRUE); 767 jpeg_read_header (&cinfo, TRUE);
257 768
258 cinfo.dct_method = JDCT_DEFAULT; 769 cinfo.dct_method = JDCT_DEFAULT;
259 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 770 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
260 cinfo.do_block_smoothing = FALSE; 771 cinfo.do_block_smoothing = FALSE;
… …
270 { 781 {
271 cinfo.dct_method = JDCT_FASTEST; 782 cinfo.dct_method = JDCT_FASTEST;
272 cinfo.do_fancy_upsampling = FALSE; 783 cinfo.do_fancy_upsampling = FALSE;
273 784
274 while (cinfo.scale_denom < 8 785 while (cinfo.scale_denom < 8
275 && cinfo.output_width >= IW*4 786 && cinfo.output_width >= iw*4
276 && cinfo.output_height >= IH*4) 787 && cinfo.output_height >= ih*4)
277 { 788 {
278 cinfo.scale_denom <<= 1; 789 cinfo.scale_denom <<= 1;
279 jpeg_calc_output_dimensions (&cinfo); 790 jpeg_calc_output_dimensions (&cinfo);
280 } 791 }
281 } 792 }
282 793
794 if (cinfo.output_components != 3)
795 longjmp (jerr.setjmp_buffer, 3);
796
797 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
798 {
799 cinfo.out_color_space = JCS_CMYK;
800 cinfo.output_components = 4;
801 }
802
283 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 803 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
284 if (!RETVAL) 804 if (!RETVAL)
285 longjmp (jerr.setjmp_buffer, 2); 805 longjmp (jerr.setjmp_buffer, 2);
286 806
287 data = gdk_pixbuf_get_pixels (RETVAL); 807 data = gdk_pixbuf_get_pixels (RETVAL);
288 rs = gdk_pixbuf_get_rowstride (RETVAL); 808 rs = gdk_pixbuf_get_rowstride (RETVAL);
289
290 if (cinfo.output_components != 3)
291 longjmp (jerr.setjmp_buffer, 3);
292 809
293 jpeg_start_decompress (&cinfo); 810 jpeg_start_decompress (&cinfo);
294 811
295 while (cinfo.output_scanline < cinfo.output_height) 812 while (cinfo.output_scanline < cinfo.output_height)
296 { 813 {
… …
303 rp [3] = (guchar *)rp [2] + rs; 820 rp [3] = (guchar *)rp [2] + rs;
304 821
305 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 822 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
306 } 823 }
307 824
825 if (cinfo.out_color_space == JCS_CMYK)
826 {
827 guchar *end = data + cinfo.output_height * rs;
828
829 while (data < end)
830 {
831 U32 c = data [0];
832 U32 m = data [1];
833 U32 y = data [2];
834 U32 k = data [3];
835
836 if (0)
837 if (cinfo.Adobe_transform == 2)
838 {
839 c ^= 0xff;
840 m ^= 0xff;
841 y ^= 0xff;
842 k ^= 0xff;
843 }
844
845 data [0] = (c * k + 0x80) / 0xff;
846 data [1] = (m * k + 0x80) / 0xff;
847 data [2] = (y * k + 0x80) / 0xff;
848 data [3] = 0xff;
849
850 data += 4;
851 }
852 }
853
308 jpeg_finish_decompress (&cinfo); 854 jpeg_finish_decompress (&cinfo);
309 fclose (fp);
310 jpeg_destroy_decompress (&cinfo); 855 jpeg_destroy_decompress (&cinfo);
856 perlinterp_acquire ();
311} 857}
312 OUTPUT: 858 OUTPUT:
313 RETVAL 859 RETVAL
314 860
861void
862compare (GdkPixbuf *a, GdkPixbuf *b)
863 PPCODE:
864 perlinterp_release ();
865{
866 int w = gdk_pixbuf_get_width (a);
867 int h = gdk_pixbuf_get_height (a);
868
869 int sa = gdk_pixbuf_get_rowstride (a);
870 int sb = gdk_pixbuf_get_rowstride (b);
871
872 guchar *pa = gdk_pixbuf_get_pixels (a);
873 guchar *pb = gdk_pixbuf_get_pixels (b);
874
875 int x, y;
876
877 assert (w == gdk_pixbuf_get_width (b));
878 assert (h == gdk_pixbuf_get_height (b));
879
880 assert (gdk_pixbuf_get_n_channels (a) == 3);
881 assert (gdk_pixbuf_get_n_channels (b) == 3);
882
883 double diff = 0.;
884 int peak = 0;
885
886 if (w && h)
887 for (y = 0; y < h; y++)
888 {
889 guchar *pa_ = pa + y * sa;
890 guchar *pb_ = pb + y * sb;
891
892 for (x = 0; x < w; x++)
893 {
894 int d;
895
896 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
897 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
898 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
899 }
900 }
901
902 perlinterp_acquire ();
903
904 EXTEND (SP, 2);
905 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
906 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
907}
908
315############################################################################# 909#############################################################################
316 910
317MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 911MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
912
913# currently only works for filenames (octet strings)
318 914
319SV * 915SV *
320foldcase (SV *pathsv) 916foldcase (SV *pathsv)
321 PROTOTYPE: $ 917 PROTOTYPE: $
322 CODE: 918 CODE:
323{ 919{
324 STRLEN plen; 920 STRLEN plen;
325 U8 *path = (U8 *)SvPVutf8 (pathsv, plen); 921 U8 *path = (U8 *)SvPV (pathsv, plen);
326 U8 *pend = path + plen; 922 U8 *pend = path + plen;
327 U8 dst [plen * 6 * 3], *dstp = dst; 923 U8 dst [plen * 8 * 3], *dstp = dst;
328 924
329 while (path < pend) 925 while (path < pend)
330 { 926 {
331 U8 ch = *path; 927 U8 ch = *path;
332 928
333 if (ch >= 'a' && ch <= 'z') 929 if (ch >= 'a' && ch <= 'z')
334 *dstp++ = *path++; 930 *dstp++ = *path++;
931 else if (ch >= 'A' && ch <= 'Z')
932 *dstp++ = *path++ + ('a' - 'A');
335 else if (ch >= '0' && ch <= '9') 933 else if (ch >= '0' && ch <= '9')
336 { 934 {
935 /* version sort, up to 8 digits */
337 STRLEN el, nl = 0; 936 STRLEN el, nl = 0;
338 while (*path >= '0' && *path <= '9' && path < pend) 937 while (*path >= '0' && *path <= '9' && path < pend)
339 path++, nl++; 938 path++, nl++;
340 939
341 for (el = nl; el < 6; el++) 940 for (el = nl; el < 8; el++)
342 *dstp++ = '0'; 941 *dstp++ = '0';
343 942
344 memcpy (dstp, path - nl, nl); 943 memcpy (dstp, path - nl, nl);
345 dstp += nl; 944 dstp += nl;
346 } 945 }
946 else
947 *dstp++ = *path++;
948#if 0
347 else 949 else
348 { 950 {
349 STRLEN cl; 951 STRLEN cl;
350 to_utf8_fold (path, dstp, &cl); 952 to_utf8_fold (path, dstp, &cl);
351 dstp += cl; 953 dstp += cl;
352 path += is_utf8_char (path); 954 path += is_utf8_char (path);
353 } 955 }
956#endif
354 } 957 }
355 958
356 RETVAL = newSVpvn ((const char *)dst, dstp - dst); 959 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
357} 960}
358 OUTPUT: 961 OUTPUT:
… …
383 } 986 }
384} 987}
385 OUTPUT: 988 OUTPUT:
386 RETVAL 989 RETVAL
387 990
991#############################################################################
992
993MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
994
995void
996dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
997 CODE:
998{
999 int w = gdk_pixbuf_get_width (pb);
1000 int h = gdk_pixbuf_get_height (pb);
1001 int x, y, i;
1002 guchar *dst;
1003 int bpp = gdk_pixbuf_get_n_channels (pb);
1004 guchar *src = gdk_pixbuf_get_pixels (pb);
1005 int sstr = gdk_pixbuf_get_rowstride (pb);
1006
1007 a85_init ();
1008
1009 for (y = 0; y < h; y++)
1010 for (x = 0; x < w; x++)
1011 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
1012 a85_push (fp, src [x * bpp + y * sstr + i]);
1013
1014 a85_finish (fp);
1015}
1016
1017void
1018dump_binary (PerlIO *fp, GdkPixbuf *pb)
1019 CODE:
1020{
1021 int w = gdk_pixbuf_get_width (pb);
1022 int h = gdk_pixbuf_get_height (pb);
1023 int x, y, i;
1024 guchar *dst;
1025 int bpp = gdk_pixbuf_get_n_channels (pb);
1026 guchar *src = gdk_pixbuf_get_pixels (pb);
1027 int sstr = gdk_pixbuf_get_rowstride (pb);
1028
1029 for (y = 0; y < h; y++)
1030 for (x = 0; x < w; x++)
1031 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
1032 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
1033}
1034
1035#############################################################################
1036
1037MODULE = Gtk2::CV PACKAGE = Gtk2::CV
1038
388SV * 1039SV *
389pb_to_p7 (GdkPixbuf *pb) 1040pb_to_hv84 (GdkPixbuf *pb)
390 CODE: 1041 CODE:
391{ 1042{
392 int w = gdk_pixbuf_get_width (pb); 1043 int w = gdk_pixbuf_get_width (pb);
393 int h = gdk_pixbuf_get_height (pb); 1044 int h = gdk_pixbuf_get_height (pb);
394 int x, y; 1045 int x, y;
395 guchar *dst; 1046 guchar *dst;
396 int bpp = gdk_pixbuf_get_n_channels (pb); 1047 int bpp = gdk_pixbuf_get_n_channels (pb);
397 guchar *src = gdk_pixbuf_get_pixels (pb); 1048 guchar *src = gdk_pixbuf_get_pixels (pb);
398 int sstr = gdk_pixbuf_get_rowstride (pb); 1049 int sstr = gdk_pixbuf_get_rowstride (pb);
399 int Er[IW], Eg[IW], Eb[IW];
400 int seed = 77;
401
402 RETVAL = newSV (w * h);
403 SvPOK_only (RETVAL);
404 SvCUR_set (RETVAL, w * h);
405
406 dst = (guchar *)SvPVX (RETVAL);
407
408 memset (Er, 0, sizeof (int) * IW);
409 memset (Eg, 0, sizeof (int) * IW);
410 memset (Eb, 0, sizeof (int) * IW);
411
412 /* some primitive error distribution + random dithering */
413
414 for (y = 0; y < h; y++)
415 {
416 int er = 0, eg = 0, eb = 0;
417
418 for (x = 0; x < w; x++)
419 {
420 int r, g, b;
421 guchar *p = src + x * bpp + y * sstr;
422
423 r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
424 g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
425 b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
426
427 r = r > 7 ? 7 : r < 0 ? 0 : r;
428 g = g > 7 ? 7 : g < 0 ? 0 : g;
429 b = b > 3 ? 3 : b < 0 ? 0 : b;
430
431 er += p[0] - (r * 255 + 4) / 7;
432 eg += p[1] - (g * 255 + 4) / 7;
433 eb += p[2] - (b * 255 + 2) / 3;
434
435 Er[x] = er >> 1; er -= (er + 1) >> 1;
436 Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
437 Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
438
439 *dst++ = r << 5 | g << 2 | b;
440 }
441 }
442}
443 OUTPUT:
444 RETVAL
445
446#############################################################################
447
448MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
449
450void
451dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
452 CODE:
453{
454 int w = gdk_pixbuf_get_width (pb);
455 int h = gdk_pixbuf_get_height (pb);
456 int x, y, i;
457 guchar *dst;
458 int bpp = gdk_pixbuf_get_n_channels (pb);
459 guchar *src = gdk_pixbuf_get_pixels (pb);
460 int sstr = gdk_pixbuf_get_rowstride (pb);
461
462 a85_init ();
463
464 for (y = 0; y < h; y++)
465 for (x = 0; x < w; x++)
466 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
467 a85_push (fp, src [x * bpp + y * sstr + i]);
468
469 a85_finish (fp);
470}
471
472void
473dump_binary (PerlIO *fp, GdkPixbuf *pb)
474 CODE:
475{
476 int w = gdk_pixbuf_get_width (pb);
477 int h = gdk_pixbuf_get_height (pb);
478 int x, y, i;
479 guchar *dst;
480 int bpp = gdk_pixbuf_get_n_channels (pb);
481 guchar *src = gdk_pixbuf_get_pixels (pb);
482 int sstr = gdk_pixbuf_get_rowstride (pb);
483
484 for (y = 0; y < h; y++)
485 for (x = 0; x < w; x++)
486 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
487 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
488}
489
490#############################################################################
491
492MODULE = Gtk2::CV PACKAGE = Gtk2::CV
493
494SV *
495pb_to_hv84 (GdkPixbuf *pb)
496 CODE:
497{
498 int w = gdk_pixbuf_get_width (pb);
499 int h = gdk_pixbuf_get_height (pb);
500 int x, y;
501 guchar *dst;
502 int bpp = gdk_pixbuf_get_n_channels (pb);
503 guchar *src = gdk_pixbuf_get_pixels (pb);
504 int sstr = gdk_pixbuf_get_rowstride (pb);
505 1050
506 RETVAL = newSV (6 * 8 * 12 / 8); 1051 RETVAL = newSV (6 * 8 * 12 / 8);
507 SvPOK_only (RETVAL); 1052 SvPOK_only (RETVAL);
508 SvCUR_set (RETVAL, 6 * 8 * 12 / 8); 1053 SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
509 1054
… …
578############################################################################# 1123#############################################################################
579 1124
580MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 1125MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
581 1126
582SV * 1127SV *
583make_histograms (SV *ar) 1128extract_features (SV *ar)
584 CODE: 1129 CODE:
585{ 1130{
586 int i; 1131 int i;
587 AV *av, *result; 1132 AV *av, *result;
588 1133
589 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 1134 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
590 croak ("Not an array ref as first argument to make_histogram"); 1135 croak ("Not an array ref as first argument to extract_features");
591 1136
592 av = (AV *) SvRV (ar); 1137 av = (AV *) SvRV (ar);
593 result = newAV (); 1138 result = newAV ();
594 1139
595 for (i = 0; i <= av_len (av); ++i) 1140 for (i = 0; i <= av_len (av); ++i)
596 { 1141 {
597 const int HISTSIZE = 64;
598
599 int j;
600 SV *sv = *av_fetch (av, i, 1); 1142 SV *sv = *av_fetch (av, i, 1);
601 STRLEN len;
602 char *buf = SvPVbyte (sv, len);
603
604 int tmphist[HISTSIZE];
605 float *hist;
606
607 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); 1143 SV *histsv = newSV (9 * sizeof (float) + 1);
1144
608 SvPOK_on (histsv); 1145 SvPOK_on (histsv);
609 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 1146 SvCUR_set (histsv, 9 * sizeof (float));
610 hist = (float *)SvPVX (histsv); 1147 float *hist = (float *)SvPVX (histsv);
611 1148
612 Zero (tmphist, sizeof (tmphist), char); 1149 struct feature f_h, f_s, f_v;
1150 feature_init (&f_h);
1151 feature_init (&f_s);
1152 feature_init (&f_v);
613 1153
614 for (j = len; j--; )
615 {
616 unsigned int idx
617 = ((*buf & 0xc0) >> 2)
618 | ((*buf & 0x18) >> 1)
619 | (*buf & 0x03);
620
621 ++tmphist[idx];
622 ++buf;
623 }
624 1154 {
625 for (j = 0; j < HISTSIZE; ++j) 1155 STRLEN len;
626 hist[j] = (float)tmphist[j] / (len + 1e-30); 1156 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
1157 while (len >= 3)
1158 {
1159 unsigned int r, g, b, h, s, v;
1160 r = *buf++; g = *buf++; b = *buf++;
1161 rgb_to_hsv (r, g, b, &h, &s, &v);
1162
1163 feature_update_pass_1 (&f_h, h);
1164 feature_update_pass_1 (&f_s, s);
1165 feature_update_pass_1 (&f_v, v);
1166
1167 len -= 3;
1168 }
1169
1170 feature_finish_pass_1 (&f_h);
1171 feature_finish_pass_1 (&f_s);
1172 feature_finish_pass_1 (&f_v);
1173 }
1174
1175 {
1176 STRLEN len;
1177 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
1178 while (len >= 3)
1179 {
1180 unsigned int r, g, b, h, s, v;
1181 r = *buf++; g = *buf++; b = *buf++;
1182 rgb_to_hsv (r, g, b, &h, &s, &v);
1183
1184 feature_update_pass_2 (&f_h, h);
1185 feature_update_pass_2 (&f_s, s);
1186 feature_update_pass_2 (&f_v, v);
1187
1188 len -= 3;
1189 }
1190
1191 feature_finish_pass_2 (&f_h);
1192 feature_finish_pass_2 (&f_s);
1193 feature_finish_pass_2 (&f_v);
1194 }
1195
1196 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
1197 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
1198 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
627 1199
628 av_push (result, histsv); 1200 av_push (result, histsv);
629 } 1201 }
630 1202
631 RETVAL = newRV_noinc ((SV *)result); 1203 RETVAL = newRV_noinc ((SV *)result);
632} 1204}
633 OUTPUT: 1205 OUTPUT:
634 RETVAL 1206 RETVAL
635 1207
636

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