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Comparing CV/CV.xs (file contents):
Revision 1.21 by root, Sat Jul 23 03:25:51 2005 UTC vs.
Revision 1.65 by root, Thu Dec 2 03:11:45 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, 0x0d, 0xa, 0x87, 0x0a
424 };
425
426 if (data_len >= 20
427 && data[0] == 0xff
428 && data[1] == 0xd8
429 && data[2] == 0xff)
430 RETVAL = "image/jpeg";
431 else if (data_len >= 12
432 && data[ 0] == (U8)'R'
433 && data[ 1] == (U8)'I'
434 && data[ 2] == (U8)'F'
435 && data[ 3] == (U8)'F'
436 && data[ 8] == (U8)'W'
437 && data[ 9] == (U8)'E'
438 && data[10] == (U8)'B'
439 && data[11] == (U8)'P')
440 RETVAL = "image/webp";
441 else if (data_len >= 16
442 && data[ 0] == 0x89
443 && data[ 1] == (U8)'P'
444 && data[ 2] == (U8)'N'
445 && data[ 3] == (U8)'G'
446 && data[ 4] == 0x0d
447 && data[ 5] == 0x0a
448 && data[ 6] == 0x1a
449 && data[ 7] == 0x0a)
450 RETVAL = "image/png";
451 else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0)
452 RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck
453 else if (data_len >= 2
454 && data[0] == 0xff
455 && data[1] == 0x0a)
456 RETVAL = "image/jxl";
457 else if (data_len >= 13
458 && data[0] == 'G'
459 && data[1] == 'I'
460 && data[2] == 'F'
461 && data[3] == '8'
462 //&& (data[4] == '7' || data[4] == '9')
463 && data[5] == 'a')
464 {
465 RETVAL = "image/gif";
466
467 // now see if its animated - we require the netscape application header for this
468 int ofs = 13;
469
470 if (data[10] & 0x80)
471 ofs += (1 << ((data[10] & 7) + 1)) * 3;
472
473 if (data_len >= ofs + 2 + 1 + 11)
474 {
475
476 // skip a graphic control extension block. we assume
477 // there is at most one such block - while the NAB
478 // has to come firstz, some files do not obey this
479 if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
480 ofs += 3 + data[ofs + 2] + 1;
481
482 if (data_len >= ofs + 2 + 1 + 11)
483 if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
484 RETVAL = "video/gif";
485 }
486 }
487
488 else
489 XSRETURN_UNDEF;
490}
491 OUTPUT:
492 RETVAL
493
177GdkPixbuf_noinc * 494GdkPixbuf_noinc *
178load_jpeg (char *path, int thumbnail=0) 495decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
496 CODE:
497{
498#if WEBP
499 STRLEN data_size;
500 int alpha;
501 WebPData data;
502 WebPDemuxer *demux;
503 WebPIterator iter;
504 WebPDecoderConfig config;
505 int inw, inh;
506
507 data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
508 data.size = data_size;
509
510 perlinterp_release ();
511
512 RETVAL = 0;
513
514 if (!(demux = WebPDemux (&data)))
515 goto err_demux;
516
517 if (!WebPDemuxGetFrame (demux, 1, &iter))
518 goto err_iter;
519
520 if (!WebPInitDecoderConfig (&config))
521 goto err_iter;
522
523 config.options.use_threads = 1;
524
525 if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
526 goto err_iter;
527
528 inw = config.input.width;
529 inh = config.input.height;
530
531 if (thumbnail)
532 {
533 if (inw * ih > inh * iw)
534 ih = (iw * inh + inw - 1) / inw;
535 else
536 iw = (ih * inw + inh - 1) / inh;
537
538 config.options.bypass_filtering = 1;
539 config.options.no_fancy_upsampling = 1;
540
541 config.options.use_scaling = 1;
542 config.options.scaled_width = iw;
543 config.options.scaled_height = ih;
544 }
545 else
546 {
547 iw = inw;
548 ih = inh;
549 }
550
551 alpha = !!config.input.has_alpha;
552
553 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
554 if (!RETVAL)
555 goto err_iter;
556
557 config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
558 config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
559 config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
560 config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
561 config.output.is_external_memory = 1;
562
563 if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
564 {
565 g_object_unref (RETVAL);
566 RETVAL = 0;
567 goto err_iter;
568 }
569
570 err_iter:
571 WebPDemuxReleaseIterator (&iter);
572 err_demux:
573 WebPDemuxDelete (demux);
574
575 perlinterp_acquire ();
576#else
577 croak ("load_webp: webp not enabled at compile time");
578#endif
579}
580 OUTPUT:
581 RETVAL
582
583GdkPixbuf_noinc *
584decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
585 CODE:
586{
587#if JXL
588 JxlDecoder *dec;
589 JxlBasicInfo info;
590 const uint8_t *next_in = (uint8_t *)SvPVbyte_nolen (image_data);
591 size_t avail_in = SvCUR (image_data);
592 const char *error = 0;
593 JxlDecoderStatus status;
594 static void *runner_cache;
595 void *runner = 0;
596
597 RETVAL = 0;
598
599 if (runner_cache)
600 runner = runner_cache;
601 else
602 runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
603
604 runner_cache = 0;
605
606 perlinterp_release ();
607
608 dec = JxlDecoderCreate (0);
609
610 error = "JxlDecoderCreate failed";
611 if (!dec)
612 goto done;
613
614 status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
615 error = "JxlDecoderSetParallelRunner failed";
616 if (status != JXL_DEC_SUCCESS)
617 goto done;
618
619 error = "JxlDecoderSubscribeEvents failed";
620 status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE);
621 if (status != JXL_DEC_SUCCESS)
622 goto done;
623
624 status = JxlDecoderSetInput (dec, next_in, avail_in);
625 error = "JxlDecoderSetInput failed";
626 if (status != JXL_DEC_SUCCESS)
627 goto done;
628
629 for (;;)
630 {
631 status = JxlDecoderProcessInput (dec);
632
633 switch (status)
634 {
635 case JXL_DEC_FULL_IMAGE:
636 error = 0;
637 goto done;
638
639 case JXL_DEC_ERROR:
640 error = "JxlDecoderProcessInput failed";
641 goto done;
642
643 case JXL_DEC_NEED_MORE_INPUT:
644 error = "incomplete file";
645 goto done;
646
647 case JXL_DEC_SUCCESS:
648 error = "incomplete decode";
649 goto done;
650
651 case JXL_DEC_BASIC_INFO:
652 {
653 status = JxlDecoderGetBasicInfo (dec, &info);
654 error = "JxlDecoderGetBasicInfo failed";
655 if (status != JXL_DEC_SUCCESS)
656 goto done;
657
658 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
659 error = "unable to allocate pixbuf";
660 if (!RETVAL)
661 goto done;
662
663 JxlPixelFormat format = {
664 info.alpha_bits ? 4 : 3,
665 JXL_TYPE_UINT8,
666 JXL_NATIVE_ENDIAN,
667 gdk_pixbuf_get_rowstride (RETVAL)
668 };
669
670 // cannot use gdk_pixbuf_get_byte_length because that does
671 // not return the size of the buffer, but the size of the buffer without
672 // the last padding bytes. the internal buffer is rowstride * ysize,
673 // and this is what the jxl decoder needs. none of this is documented
674 // in either library, of course.
675
676 status = JxlDecoderSetImageOutBuffer (
677 dec,
678 &format,
679 gdk_pixbuf_get_pixels (RETVAL),
680 gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
681 );
682 error = "JxlDecoderSetImageOutBuffer failed";
683 if (status != JXL_DEC_SUCCESS)
684 goto done;
685 }
686 break;
687
688 default:
689 error = "unexpected event";
690 goto done;
691 }
692 }
693
694 done:
695 if (dec)
696 JxlDecoderDestroy (dec);
697
698 perlinterp_acquire ();
699
700 if (runner_cache)
701 JxlThreadParallelRunnerDestroy (runner);
702
703 runner_cache = runner;
704
705 if (error)
706 {
707 if (RETVAL)
708 g_object_unref (RETVAL);
709
710 croak ("load_jxl: %s (status %d)", error, status);
711 }
712#else
713 croak ("load_jxl: jpeg-xl not enabled at compile time");
714#endif
715}
716 OUTPUT:
717 RETVAL
718
719GdkPixbuf_noinc *
720decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
179 CODE: 721 CODE:
180{ 722{
181 struct jpeg_decompress_struct cinfo; 723 struct jpeg_decompress_struct cinfo;
182 struct jpg_err_mgr jerr; 724 struct jpg_err_mgr jerr;
183 guchar *data;
184 int rs; 725 int rs;
185 FILE *fp;
186 volatile GdkPixbuf *pb = 0; 726 volatile GdkPixbuf *pb = 0;
727 STRLEN data_len;
728 guchar *data = SvPVbyte (image_data, data_len);
729
187 RETVAL = 0; 730 RETVAL = 0;
188 731
189 if (!(fp = fopen (path, "rb"))) 732 perlinterp_release ();
190 XSRETURN_UNDEF;
191 733
192 cinfo.err = jpeg_std_error (&jerr.err); 734 cinfo.err = jpeg_std_error (&jerr.err);
193 735
194 jerr.err.error_exit = cv_error_exit; 736 jerr.err.error_exit = cv_error_exit;
195 jerr.err.output_message = cv_error_output; 737 jerr.err.output_message = cv_error_output;
196 738
197 if ((rs = setjmp (jerr.setjmp_buffer))) 739 if ((rs = setjmp (jerr.setjmp_buffer)))
198 { 740 {
199 fclose (fp);
200 jpeg_destroy_decompress (&cinfo); 741 jpeg_destroy_decompress (&cinfo);
201 742
202 if (pb) 743 if (pb)
203 g_object_unref ((gpointer)pb); 744 g_object_unref ((gpointer)pb);
204 745
746 perlinterp_acquire ();
205 XSRETURN_UNDEF; 747 XSRETURN_UNDEF;
206 } 748 }
207 749
750 if (!data_len)
751 longjmp (jerr.setjmp_buffer, 4);
752
208 jpeg_create_decompress (&cinfo); 753 jpeg_create_decompress (&cinfo);
754 cv_jpeg_mem_src (&cinfo, data, data_len);
209 755
210 jpeg_stdio_src (&cinfo, fp);
211 jpeg_read_header (&cinfo, TRUE); 756 jpeg_read_header (&cinfo, TRUE);
212 757
213 cinfo.dct_method = JDCT_DEFAULT; 758 cinfo.dct_method = JDCT_DEFAULT;
214 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ 759 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
215 cinfo.do_block_smoothing = FALSE; 760 cinfo.do_block_smoothing = FALSE;
225 { 770 {
226 cinfo.dct_method = JDCT_FASTEST; 771 cinfo.dct_method = JDCT_FASTEST;
227 cinfo.do_fancy_upsampling = FALSE; 772 cinfo.do_fancy_upsampling = FALSE;
228 773
229 while (cinfo.scale_denom < 8 774 while (cinfo.scale_denom < 8
230 && cinfo.output_width >= IW*4 775 && cinfo.output_width >= iw*4
231 && cinfo.output_height >= IH*4) 776 && cinfo.output_height >= ih*4)
232 { 777 {
233 cinfo.scale_denom <<= 1; 778 cinfo.scale_denom <<= 1;
234 jpeg_calc_output_dimensions (&cinfo); 779 jpeg_calc_output_dimensions (&cinfo);
235 } 780 }
236 } 781 }
237 782
783 if (cinfo.output_components != 3)
784 longjmp (jerr.setjmp_buffer, 3);
785
786 if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK)
787 {
788 cinfo.out_color_space = JCS_CMYK;
789 cinfo.output_components = 4;
790 }
791
238 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); 792 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
239 if (!RETVAL) 793 if (!RETVAL)
240 longjmp (jerr.setjmp_buffer, 2); 794 longjmp (jerr.setjmp_buffer, 2);
241 795
242 data = gdk_pixbuf_get_pixels (RETVAL); 796 data = gdk_pixbuf_get_pixels (RETVAL);
243 rs = gdk_pixbuf_get_rowstride (RETVAL); 797 rs = gdk_pixbuf_get_rowstride (RETVAL);
244
245 if (cinfo.output_components != 3)
246 longjmp (jerr.setjmp_buffer, 3);
247 798
248 jpeg_start_decompress (&cinfo); 799 jpeg_start_decompress (&cinfo);
249 800
250 while (cinfo.output_scanline < cinfo.output_height) 801 while (cinfo.output_scanline < cinfo.output_height)
251 { 802 {
258 rp [3] = (guchar *)rp [2] + rs; 809 rp [3] = (guchar *)rp [2] + rs;
259 810
260 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); 811 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
261 } 812 }
262 813
814 if (cinfo.out_color_space == JCS_CMYK)
815 {
816 guchar *end = data + cinfo.output_height * rs;
817
818 while (data < end)
819 {
820 U32 c = data [0];
821 U32 m = data [1];
822 U32 y = data [2];
823 U32 k = data [3];
824
825 if (0)
826 if (cinfo.Adobe_transform == 2)
827 {
828 c ^= 0xff;
829 m ^= 0xff;
830 y ^= 0xff;
831 k ^= 0xff;
832 }
833
834 data [0] = (c * k + 0x80) / 0xff;
835 data [1] = (m * k + 0x80) / 0xff;
836 data [2] = (y * k + 0x80) / 0xff;
837 data [3] = 0xff;
838
839 data += 4;
840 }
841 }
842
263 jpeg_finish_decompress (&cinfo); 843 jpeg_finish_decompress (&cinfo);
264 fclose (fp);
265 jpeg_destroy_decompress (&cinfo); 844 jpeg_destroy_decompress (&cinfo);
845 perlinterp_acquire ();
266} 846}
267 OUTPUT: 847 OUTPUT:
268 RETVAL 848 RETVAL
269 849
850void
851compare (GdkPixbuf *a, GdkPixbuf *b)
852 PPCODE:
853 perlinterp_release ();
854{
855 int w = gdk_pixbuf_get_width (a);
856 int h = gdk_pixbuf_get_height (a);
857
858 int sa = gdk_pixbuf_get_rowstride (a);
859 int sb = gdk_pixbuf_get_rowstride (b);
860
861 guchar *pa = gdk_pixbuf_get_pixels (a);
862 guchar *pb = gdk_pixbuf_get_pixels (b);
863
864 int x, y;
865
866 assert (w == gdk_pixbuf_get_width (b));
867 assert (h == gdk_pixbuf_get_height (b));
868
869 assert (gdk_pixbuf_get_n_channels (a) == 3);
870 assert (gdk_pixbuf_get_n_channels (b) == 3);
871
872 double diff = 0.;
873 int peak = 0;
874
875 if (w && h)
876 for (y = 0; y < h; y++)
877 {
878 guchar *pa_ = pa + y * sa;
879 guchar *pb_ = pb + y * sb;
880
881 for (x = 0; x < w; x++)
882 {
883 int d;
884
885 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
886 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
887 d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d));
888 }
889 }
890
891 perlinterp_acquire ();
892
893 EXTEND (SP, 2);
894 PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
895 PUSHs (sv_2mortal (newSVnv (peak / 255.)));
896}
897
270############################################################################# 898#############################################################################
271 899
272MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 900MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
901
902# currently only works for filenames (octet strings)
273 903
274SV * 904SV *
275foldcase (SV *pathsv) 905foldcase (SV *pathsv)
276 PROTOTYPE: $ 906 PROTOTYPE: $
277 CODE: 907 CODE:
278{ 908{
279 STRLEN plen; 909 STRLEN plen;
280 U8 *path = SvPVutf8 (pathsv, plen); 910 U8 *path = (U8 *)SvPV (pathsv, plen);
281 U8 *pend = path + plen; 911 U8 *pend = path + plen;
282 U8 dst [plen * 6 * 3], *dstp = dst; 912 U8 dst [plen * 8 * 3], *dstp = dst;
283 913
284 while (path < pend) 914 while (path < pend)
285 { 915 {
286 U8 ch = *path; 916 U8 ch = *path;
287 917
288 if (ch >= 'a' && ch <= 'z') 918 if (ch >= 'a' && ch <= 'z')
289 *dstp++ = *path++; 919 *dstp++ = *path++;
920 else if (ch >= 'A' && ch <= 'Z')
921 *dstp++ = *path++ + ('a' - 'A');
290 else if (ch >= '0' && ch <= '9') 922 else if (ch >= '0' && ch <= '9')
291 { 923 {
924 /* version sort, up to 8 digits */
292 STRLEN el, nl = 0; 925 STRLEN el, nl = 0;
293 while (*path >= '0' && *path <= '9' && path < pend) 926 while (*path >= '0' && *path <= '9' && path < pend)
294 path++, nl++; 927 path++, nl++;
295 928
296 for (el = nl; el < 6; el++) 929 for (el = nl; el < 8; el++)
297 *dstp++ = '0'; 930 *dstp++ = '0';
298 931
299 memcpy (dstp, path - nl, nl); 932 memcpy (dstp, path - nl, nl);
300 dstp += nl; 933 dstp += nl;
301 } 934 }
935 else
936 *dstp++ = *path++;
937#if 0
302 else 938 else
303 { 939 {
304 STRLEN cl; 940 STRLEN cl;
305 to_utf8_fold (path, dstp, &cl); 941 to_utf8_fold (path, dstp, &cl);
306 dstp += cl; 942 dstp += cl;
307 path += is_utf8_char (path); 943 path += is_utf8_char (path);
308 } 944 }
945#endif
309 } 946 }
310 947
311 RETVAL = newSVpvn (dst, dstp - dst); 948 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
312} 949}
313 OUTPUT: 950 OUTPUT:
314 RETVAL 951 RETVAL
315 952
316GdkPixbuf_noinc * 953GdkPixbuf_noinc *
317p7_to_pb (int w, int h, guchar *src) 954p7_to_pb (int w, int h, SV *src_sv)
318 PROTOTYPE: @ 955 PROTOTYPE: @
319 CODE: 956 CODE:
320{ 957{
321 int x, y; 958 int x, y;
322 guchar *dst, *d; 959 guchar *dst, *d;
323 int dstr; 960 int dstr;
961 guchar *src = (guchar *)SvPVbyte_nolen (src_sv);
324 962
325 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); 963 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
326 dst = gdk_pixbuf_get_pixels (RETVAL); 964 dst = gdk_pixbuf_get_pixels (RETVAL);
327 dstr = gdk_pixbuf_get_rowstride (RETVAL); 965 dstr = gdk_pixbuf_get_rowstride (RETVAL);
328 966
337 } 975 }
338} 976}
339 OUTPUT: 977 OUTPUT:
340 RETVAL 978 RETVAL
341 979
980#############################################################################
981
982MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
983
984void
985dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
986 CODE:
987{
988 int w = gdk_pixbuf_get_width (pb);
989 int h = gdk_pixbuf_get_height (pb);
990 int x, y, i;
991 guchar *dst;
992 int bpp = gdk_pixbuf_get_n_channels (pb);
993 guchar *src = gdk_pixbuf_get_pixels (pb);
994 int sstr = gdk_pixbuf_get_rowstride (pb);
995
996 a85_init ();
997
998 for (y = 0; y < h; y++)
999 for (x = 0; x < w; x++)
1000 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
1001 a85_push (fp, src [x * bpp + y * sstr + i]);
1002
1003 a85_finish (fp);
1004}
1005
1006void
1007dump_binary (PerlIO *fp, GdkPixbuf *pb)
1008 CODE:
1009{
1010 int w = gdk_pixbuf_get_width (pb);
1011 int h = gdk_pixbuf_get_height (pb);
1012 int x, y, i;
1013 guchar *dst;
1014 int bpp = gdk_pixbuf_get_n_channels (pb);
1015 guchar *src = gdk_pixbuf_get_pixels (pb);
1016 int sstr = gdk_pixbuf_get_rowstride (pb);
1017
1018 for (y = 0; y < h; y++)
1019 for (x = 0; x < w; x++)
1020 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
1021 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
1022}
1023
1024#############################################################################
1025
1026MODULE = Gtk2::CV PACKAGE = Gtk2::CV
1027
342SV * 1028SV *
343pb_to_p7 (GdkPixbuf *pb) 1029pb_to_hv84 (GdkPixbuf *pb)
344 CODE: 1030 CODE:
345{ 1031{
346 int w = gdk_pixbuf_get_width (pb); 1032 int w = gdk_pixbuf_get_width (pb);
347 int h = gdk_pixbuf_get_height (pb); 1033 int h = gdk_pixbuf_get_height (pb);
348 int x, y; 1034 int x, y;
349 guchar *dst; 1035 guchar *dst;
350 int bpp = gdk_pixbuf_get_n_channels (pb); 1036 int bpp = gdk_pixbuf_get_n_channels (pb);
351 guchar *src = gdk_pixbuf_get_pixels (pb); 1037 guchar *src = gdk_pixbuf_get_pixels (pb);
352 int sstr = gdk_pixbuf_get_rowstride (pb); 1038 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 1039
460 RETVAL = newSV (6 * 8 * 12 / 8); 1040 RETVAL = newSV (6 * 8 * 12 / 8);
461 SvPOK_only (RETVAL); 1041 SvPOK_only (RETVAL);
462 SvCUR_set (RETVAL, 6 * 8 * 12 / 8); 1042 SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
463 1043
464 dst = SvPVX (RETVAL); 1044 dst = (guchar *)SvPVX (RETVAL);
465 1045
466 /* some primitive error distribution + random dithering */ 1046 /* some primitive error distribution + random dithering */
467 1047
468 for (y = 0; y < h; y++) 1048 for (y = 0; y < h; y++)
469 { 1049 {
532############################################################################# 1112#############################################################################
533 1113
534MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster 1114MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
535 1115
536SV * 1116SV *
537make_histograms (SV *ar) 1117extract_features (SV *ar)
538 CODE: 1118 CODE:
539{ 1119{
540 int i; 1120 int i;
541 AV *av, *result; 1121 AV *av, *result;
542 1122
543 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) 1123 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
544 croak ("Not an array ref as first argument to make_histogram"); 1124 croak ("Not an array ref as first argument to extract_features");
545 1125
546 av = (AV *) SvRV (ar); 1126 av = (AV *) SvRV (ar);
547 result = newAV (); 1127 result = newAV ();
548 1128
549 for (i = 0; i <= av_len (av); ++i) 1129 for (i = 0; i <= av_len (av); ++i)
550 { 1130 {
551 const int HISTSIZE = 64;
552
553 int j;
554 SV *sv = *av_fetch (av, i, 1); 1131 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); 1132 SV *histsv = newSV (9 * sizeof (float) + 1);
1133
562 SvPOK_on (histsv); 1134 SvPOK_on (histsv);
563 SvCUR_set (histsv, HISTSIZE * sizeof (float)); 1135 SvCUR_set (histsv, 9 * sizeof (float));
564 hist = (float *)SvPVX (histsv); 1136 float *hist = (float *)SvPVX (histsv);
565 1137
566 Zero (tmphist, sizeof (tmphist), char); 1138 struct feature f_h, f_s, f_v;
1139 feature_init (&f_h);
1140 feature_init (&f_s);
1141 feature_init (&f_v);
567 1142
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 1143 {
579 for (j = 0; j < HISTSIZE; ++j) 1144 STRLEN len;
580 hist[j] = (float)tmphist[j] / (len + 1e-30); 1145 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
1146 while (len >= 3)
1147 {
1148 unsigned int r, g, b, h, s, v;
1149 r = *buf++; g = *buf++; b = *buf++;
1150 rgb_to_hsv (r, g, b, &h, &s, &v);
1151
1152 feature_update_pass_1 (&f_h, h);
1153 feature_update_pass_1 (&f_s, s);
1154 feature_update_pass_1 (&f_v, v);
1155
1156 len -= 3;
1157 }
1158
1159 feature_finish_pass_1 (&f_h);
1160 feature_finish_pass_1 (&f_s);
1161 feature_finish_pass_1 (&f_v);
1162 }
1163
1164 {
1165 STRLEN len;
1166 unsigned char *buf = (unsigned char *)SvPVbyte (sv, len);
1167 while (len >= 3)
1168 {
1169 unsigned int r, g, b, h, s, v;
1170 r = *buf++; g = *buf++; b = *buf++;
1171 rgb_to_hsv (r, g, b, &h, &s, &v);
1172
1173 feature_update_pass_2 (&f_h, h);
1174 feature_update_pass_2 (&f_s, s);
1175 feature_update_pass_2 (&f_v, v);
1176
1177 len -= 3;
1178 }
1179
1180 feature_finish_pass_2 (&f_h);
1181 feature_finish_pass_2 (&f_s);
1182 feature_finish_pass_2 (&f_v);
1183 }
1184
1185 hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
1186 hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
1187 hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
581 1188
582 av_push (result, histsv); 1189 av_push (result, histsv);
583 } 1190 }
584 1191
585 RETVAL = newRV_noinc ((SV *)result); 1192 RETVAL = newRV_noinc ((SV *)result);
586} 1193}
587 OUTPUT: 1194 OUTPUT:
588 RETVAL 1195 RETVAL
589 1196
590

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