[ViewVC] Diff of: cvs/CV/CV.xs

Comparing CV/CV.xs (file contents):
Revision 1.27 by root, Sun Aug 21 02:23:52 2005 UTC vs.
Revision 1.36 by root, Thu Jun 22 20:50:05 2006 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>
9	#include <glib.h>	12	#include <glib.h>
10	#include <gtk/gtk.h>	13	#include <gtk/gtk.h>
11	#include <gdk-pixbuf/gdk-pixbuf.h>	14	#include <gdk-pixbuf/gdk-pixbuf.h>
12		15
13	#include <gperl.h>	16	#include <gperl.h>
14	#include <gtk2perl.h>	17	#include <gtk2perl.h>
15		18
16	#define IW 80 /* MUST match Schnauer.pm! */	19	#define IW 80 /* MUST match Schnauzer.pm! */
17	#define IH 60 /* MUST match Schnauer.pm! */	20	#define IH 60 /* MUST match Schnauzer.pm! */
18		21
19	#define RAND (seed = (seed + 7141) * 54773 % 134456)	22	#define RAND (seed = (seed + 7141) * 54773 % 134456)
20		23
21	#define LINELENGTH 240	24	#define LINELENGTH 240
22		25
…		…
65		68
66	*h &= 255;	69	*h &= 255;
67	}	70	}
68	}	71	}
69		72
		73	struct feature {
		74	float v1, v2, v3; // mean, square, cube
		75	int n;
		76	};
		77
		78	static void
		79	feature_init (struct feature *f)
		80	{
		81	f->v1 = 0.;
		82	f->v2 = 0.;
		83	f->v3 = 0.;
		84	f->n = 0;
		85	}
		86
		87	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		88	// elmex ist schuld.
		89	static void
		90	feature_update_pass_1 (struct feature *f, unsigned int v)
		91	{
		92	f->v1 += v;
		93	f->n += 1;
		94	}
		95
		96	static void
		97	feature_finish_pass_1 (struct feature *f)
		98	{
		99	if (f->n < 1)
		100	return;
		101
		102	f->v1 /= f->n;
		103	}
		104
		105	static void
		106	feature_update_pass_2 (struct feature *f, unsigned int v)
		107	{
		108	float d = v - f->v1;
		109
		110	f->v2 += d * d;
		111	f->v3 += d * d * d;
		112	}
		113
		114	static void
		115	feature_finish_pass_2 (struct feature *f)
		116	{
		117	if (f->n < 1)
		118	return;
		119
		120	f->v2 /= f->n;
		121	f->v3 /= f->n;
		122
		123	// this is a peculiar weightung, but it works fine
		124	f->v1 /= 255.;
		125	f->v2 /= 128. * 128.;
		126	f->v3 /= 128. * 128. * 64.;
		127	}
		128
70	static guint32 a85_val;	129	static guint32 a85_val;
71	static guint a85_cnt;	130	static guint a85_cnt;
72	static guchar a85_buf[LINELENGTH], *a85_ptr;	131	static guchar a85_buf[LINELENGTH], *a85_ptr;
73		132
74	static void	133	static void
…		…
126		185
127	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	186	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128		187
129	PROTOTYPES: ENABLE	188	PROTOTYPES: ENABLE
130		189
		190	# missing function in perl. really :)
		191	int
		192	common_prefix_length (a, b)
		193	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		194	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		195	CODE:
		196	RETVAL = 0;
		197
		198	while (a == b && *a)
		199	{
		200	RETVAL += (*a & 0xc0) != 0x80;
		201	a++, b++;
		202	}
		203
		204	OUTPUT:
		205	RETVAL
		206
		207	const char *
		208	magic (const char *path)
		209	CODE:
		210	{
		211	static magic_t cookie;
		212
		213	if (!cookie)
		214	{
		215	cookie = magic_open (MAGIC_NONE);
		216
		217	if (cookie)
		218	magic_load (cookie, 0);
		219	else
		220	XSRETURN_UNDEF;
		221	}
		222
		223	RETVAL = magic_file (cookie, path);
		224	}
		225	OUTPUT:
		226	RETVAL
		227
		228	const char *
		229	magic_mime (const char *path)
		230	CODE:
		231	{
		232	static magic_t cookie;
		233
		234	if (!cookie)
		235	{
		236	cookie = magic_open (MAGIC_MIME);
		237
		238	if (cookie)
		239	magic_load (cookie, 0);
		240	else
		241	XSRETURN_UNDEF;
		242	}
		243
		244	RETVAL = magic_file (cookie, path);
		245	}
		246	OUTPUT:
		247	RETVAL
		248
131	# missing in Gtk2 perl module	249	# missing in Gtk2 perl module
132		250
133	gboolean	251	gboolean
134	gdk_net_wm_supports (GdkAtom property)	252	gdk_net_wm_supports (GdkAtom property)
135	CODE:	253	CODE:
…		…
164	}	282	}
165	OUTPUT:	283	OUTPUT:
166	RETVAL	284	RETVAL
167		285
168	GdkPixbuf_noinc *	286	GdkPixbuf_noinc *
169	transpose (GdkPixbuf *pb)	287	rotate (GdkPixbuf *pb, int angle)
170	CODE:	288	CODE:
171	{	289	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
172	int w = gdk_pixbuf_get_width (pb);	290	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
173	int h = gdk_pixbuf_get_height (pb);	291	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
174	int bpp = gdk_pixbuf_get_n_channels (pb);	292	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
175	int x, y, i;	293	: angle);
176	guchar src = gdk_pixbuf_get_pixels (pb), dst;
177	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
178
179	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);
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:
190	RETVAL
191
192	GdkPixbuf_noinc *
193	flop (GdkPixbuf *pb)
194	CODE:
195	{
196	int w = gdk_pixbuf_get_width (pb);
197	int h = gdk_pixbuf_get_height (pb);
198	int bpp = gdk_pixbuf_get_n_channels (pb);
199	int x, y, i;
200	guchar src = gdk_pixbuf_get_pixels (pb), dst;
201	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
202
203	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);
204
205	dst = gdk_pixbuf_get_pixels (RETVAL);
206	dstr = gdk_pixbuf_get_rowstride (RETVAL);
207
208	for (y = 0; y < h; y++)
209	for (x = 0; x < w; x++)
210	for (i = 0; i < bpp; i++)
211	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
212	}
213	OUTPUT:	294	OUTPUT:
214	RETVAL	295	RETVAL
215		296
216	GdkPixbuf_noinc *	297	GdkPixbuf_noinc *
217	load_jpeg (SV *path, int thumbnail=0)	298	load_jpeg (SV *path, int thumbnail=0)
…		…
221	struct jpg_err_mgr jerr;	302	struct jpg_err_mgr jerr;
222	guchar *data;	303	guchar *data;
223	int rs;	304	int rs;
224	FILE *fp;	305	FILE *fp;
225	volatile GdkPixbuf *pb = 0;	306	volatile GdkPixbuf *pb = 0;
226	gchar *filename;
227		307
228	RETVAL = 0;	308	RETVAL = 0;
229		309
230	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
231	fp = fopen (filename, "rb");	310	fp = fopen (SvPVbyte_nolen (path), "rb");
232	g_free (filename);
233		311
234	if (!fp)	312	if (!fp)
235	XSRETURN_UNDEF;	313	XSRETURN_UNDEF;
236		314
237	cinfo.err = jpeg_std_error (&jerr.err);	315	cinfo.err = jpeg_std_error (&jerr.err);
…		…
309	fclose (fp);	387	fclose (fp);
310	jpeg_destroy_decompress (&cinfo);	388	jpeg_destroy_decompress (&cinfo);
311	}	389	}
312	OUTPUT:	390	OUTPUT:
313	RETVAL	391	RETVAL
		392
		393	void
		394	compare (GdkPixbuf a, GdkPixbuf b)
		395	PPCODE:
		396	{
		397	int w = gdk_pixbuf_get_width (a);
		398	int h = gdk_pixbuf_get_height (a);
		399	int sa = gdk_pixbuf_get_rowstride (a);
		400	int sb = gdk_pixbuf_get_rowstride (b);
		401
		402	guchar *pa = gdk_pixbuf_get_pixels (a);
		403	guchar *pb = gdk_pixbuf_get_pixels (b);
		404
		405	int x, y;
		406
		407	assert (w == gdk_pixbuf_get_width (b));
		408	assert (h == gdk_pixbuf_get_height (b));
		409
		410	assert (gdk_pixbuf_get_n_channels (a) == 3);
		411	assert (gdk_pixbuf_get_n_channels (b) == 3);
		412
		413	double diff = 0.;
		414	int peak = 0;
		415
		416	if (w && h)
		417	for (y = 0; y < h; y++)
		418	{
		419	guchar pa_ = pa + y sa;
		420	guchar pb_ = pb + y sb;
		421
		422	for (x = 0; x < w; x++)
		423	{
		424	int d;
		425
		426	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		427	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		428	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		429	}
		430	}
		431
		432	EXTEND (SP, 2);
		433	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		434	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		435	}
314		436
315	#############################################################################	437	#############################################################################
316		438
317	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	439	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
318		440
…		…
383	}	505	}
384	}	506	}
385	OUTPUT:	507	OUTPUT:
386	RETVAL	508	RETVAL
387		509
		510	#############################################################################
		511
		512	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		513
		514	void
		515	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		516	CODE:
		517	{
		518	int w = gdk_pixbuf_get_width (pb);
		519	int h = gdk_pixbuf_get_height (pb);
		520	int x, y, i;
		521	guchar *dst;
		522	int bpp = gdk_pixbuf_get_n_channels (pb);
		523	guchar *src = gdk_pixbuf_get_pixels (pb);
		524	int sstr = gdk_pixbuf_get_rowstride (pb);
		525
		526	a85_init ();
		527
		528	for (y = 0; y < h; y++)
		529	for (x = 0; x < w; x++)
		530	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		531	a85_push (fp, src [x * bpp + y * sstr + i]);
		532
		533	a85_finish (fp);
		534	}
		535
		536	void
		537	dump_binary (PerlIO fp, GdkPixbuf pb)
		538	CODE:
		539	{
		540	int w = gdk_pixbuf_get_width (pb);
		541	int h = gdk_pixbuf_get_height (pb);
		542	int x, y, i;
		543	guchar *dst;
		544	int bpp = gdk_pixbuf_get_n_channels (pb);
		545	guchar *src = gdk_pixbuf_get_pixels (pb);
		546	int sstr = gdk_pixbuf_get_rowstride (pb);
		547
		548	for (y = 0; y < h; y++)
		549	for (x = 0; x < w; x++)
		550	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		551	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		552	}
		553
		554	#############################################################################
		555
		556	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		557
388	SV *	558	SV *
389	pb_to_p7 (GdkPixbuf *pb)	559	pb_to_hv84 (GdkPixbuf *pb)
390	CODE:	560	CODE:
391	{	561	{
392	int w = gdk_pixbuf_get_width (pb);	562	int w = gdk_pixbuf_get_width (pb);
393	int h = gdk_pixbuf_get_height (pb);	563	int h = gdk_pixbuf_get_height (pb);
394	int x, y;	564	int x, y;
395	guchar *dst;	565	guchar *dst;
396	int bpp = gdk_pixbuf_get_n_channels (pb);	566	int bpp = gdk_pixbuf_get_n_channels (pb);
397	guchar *src = gdk_pixbuf_get_pixels (pb);	567	guchar *src = gdk_pixbuf_get_pixels (pb);
398	int sstr = gdk_pixbuf_get_rowstride (pb);	568	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
448	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
449
450	void
451	dump_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
472	void
473	dump_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
492	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
493
494	SV *
495	pb_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		569
506	RETVAL = newSV (6 * 8 * 12 / 8);	570	RETVAL = newSV (6 * 8 * 12 / 8);
507	SvPOK_only (RETVAL);	571	SvPOK_only (RETVAL);
508	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	572	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
509		573
…		…
578	#############################################################################	642	#############################################################################
579		643
580	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	644	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
581		645
582	SV *	646	SV *
		647	extract_features (SV *ar)
		648	CODE:
		649	{
		650	int i;
		651	AV av, result;
		652
		653	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		654	croak ("Not an array ref as first argument to make_histogram");
		655
		656	av = (AV *) SvRV (ar);
		657	result = newAV ();
		658
		659	for (i = 0; i <= av_len (av); ++i)
		660	{
		661	SV sv = av_fetch (av, i, 1);
		662	SV histsv = newSV (9 sizeof (float) + 1);
		663
		664	SvPOK_on (histsv);
		665	SvCUR_set (histsv, 9 * sizeof (float));
		666	float hist = (float )SvPVX (histsv);
		667
		668	struct feature f_h, f_s, f_v;
		669	feature_init (&f_h);
		670	feature_init (&f_s);
		671	feature_init (&f_v);
		672
		673	{
		674	STRLEN len;
		675	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		676	while (len >= 3)
		677	{
		678	unsigned int r, g, b, h, s, v;
		679	r = buf++; g = buf++; b = *buf++;
		680	rgb_to_hsv (r, g, b, &h, &s, &v);
		681
		682	feature_update_pass_1 (&f_h, h);
		683	feature_update_pass_1 (&f_s, s);
		684	feature_update_pass_1 (&f_v, v);
		685
		686	len -= 3;
		687	}
		688
		689	feature_finish_pass_1 (&f_h);
		690	feature_finish_pass_1 (&f_s);
		691	feature_finish_pass_1 (&f_v);
		692	}
		693
		694	{
		695	STRLEN len;
		696	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		697	while (len >= 3)
		698	{
		699	unsigned int r, g, b, h, s, v;
		700	r = buf++; g = buf++; b = *buf++;
		701	rgb_to_hsv (r, g, b, &h, &s, &v);
		702
		703	feature_update_pass_2 (&f_h, h);
		704	feature_update_pass_2 (&f_s, s);
		705	feature_update_pass_2 (&f_v, v);
		706
		707	len -= 3;
		708	}
		709
		710	feature_finish_pass_2 (&f_h);
		711	feature_finish_pass_2 (&f_s);
		712	feature_finish_pass_2 (&f_v);
		713	}
		714
		715	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		716	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		717	hist [6] = f_v.v1 ; hist [7] = f_v.v2 ; hist [8] = f_v.v3 ;
		718
		719	av_push (result, histsv);
		720	}
		721
		722	RETVAL = newRV_noinc ((SV *)result);
		723	}
		724	OUTPUT:
		725	RETVAL
		726
		727	SV *
583	make_histograms (SV *ar)	728	make_histograms (SV *ar)
584	CODE:	729	CODE:
585	{	730	{
586	int i;	731	int i;
587	AV av, result;	732	AV av, result;

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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 1.36 by root, Thu Jun 22 20:50:05 2006 UTC

Diff Legend

Comparing CV/CV.xs (file contents):
Revision 1.27 by root, Sun Aug 21 02:23:52 2005 UTC vs.
Revision 1.36 by root, Thu Jun 22 20:50:05 2006 UTC