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

Comparing CV/CV.xs (file contents):
Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs.
Revision 1.46 by root, Sat Jul 4 05:31:17 2015 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 <glib.h>
		13	#include <gtk/gtk.h>
9	#include <gdk-pixbuf/gdk-pixbuf.h>	14	#include <gdk-pixbuf/gdk-pixbuf.h>
10		15
11	#include <gperl.h>	16	#include <gperl.h>
12	#include <gtk2perl.h>	17	#include <gtk2perl.h>
13		18
		19	#include <assert.h>
		20
		21	#include "perlmulticore.h"
		22
14	#define IW 80 /* MUST match Schnauer.pm! */	23	#define IW 80 /* MUST match Schnauzer.pm! */
15	#define IH 60 /* MUST match Schnauer.pm! */	24	#define IH 60 /* MUST match Schnauzer.pm! */
16		25
17	#define RAND (seed = (seed + 7141) * 54773 % 134456)	26	#define RAND (seed = (seed + 7141) * 54773 % 134456)
18		27
19	#define LINELENGTH 240	28	#define LINELENGTH 240
20		29
21	#define ELLIPSIS "\xe2\x80\xa6"	30	#define ELLIPSIS "\xe2\x80\xa6"
		31
		32	typedef char *octet_string;
22		33
23	struct jpg_err_mgr	34	struct jpg_err_mgr
24	{	35	{
25	struct jpeg_error_mgr err;	36	struct jpeg_error_mgr err;
26	jmp_buf setjmp_buffer;	37	jmp_buf setjmp_buffer;
…		…
63		74
64	*h &= 255;	75	*h &= 255;
65	}	76	}
66	}	77	}
67		78
		79	struct feature {
		80	float v1, v2, v3; // mean, square, cube
		81	int n;
		82	};
		83
		84	static void
		85	feature_init (struct feature *f)
		86	{
		87	f->v1 = 0.;
		88	f->v2 = 0.;
		89	f->v3 = 0.;
		90	f->n = 0;
		91	}
		92
		93	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		94	// elmex ist schuld.
		95	static void
		96	feature_update_pass_1 (struct feature *f, unsigned int v)
		97	{
		98	f->v1 += v;
		99	f->n += 1;
		100	}
		101
		102	static void
		103	feature_finish_pass_1 (struct feature *f)
		104	{
		105	if (f->n < 1)
		106	return;
		107
		108	f->v1 /= f->n;
		109	}
		110
		111	static void
		112	feature_update_pass_2 (struct feature *f, unsigned int v)
		113	{
		114	float d = v - f->v1;
		115
		116	f->v2 += d * d;
		117	f->v3 += d * d * d;
		118	}
		119
		120	static void
		121	feature_finish_pass_2 (struct feature *f)
		122	{
		123	if (f->n < 1)
		124	return;
		125
		126	f->v2 /= f->n;
		127	f->v3 /= f->n;
		128
		129	f->v1 /= 255.;
		130	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		131	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		132	}
		133
68	static guint32 a85_val;	134	static guint32 a85_val;
69	static guint a85_cnt;	135	static guint a85_cnt;
70	static guchar a85_buf[LINELENGTH], *a85_ptr;	136	static guchar a85_buf[LINELENGTH], *a85_ptr;
71		137
72	static void	138	static void
…		…
124		190
125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	191	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
126		192
127	PROTOTYPES: ENABLE	193	PROTOTYPES: ENABLE
128		194
		195	# missing function in perl. really :)
		196	int
		197	common_prefix_length (a, b)
		198	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		199	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		200	CODE:
		201	RETVAL = 0;
		202
		203	while (a == b && *a)
		204	{
		205	RETVAL += (*a & 0xc0) != 0x80;
		206	a++, b++;
		207	}
		208
		209	OUTPUT:
		210	RETVAL
		211
		212	const char *
		213	magic (octet_string path)
		214	CODE:
		215	{
		216	static magic_t cookie;
		217
		218	if (!cookie)
		219	{
		220	cookie = magic_open (MAGIC_SYMLINK);
		221
		222	if (cookie)
		223	magic_load (cookie, 0);
		224	else
		225	XSRETURN_UNDEF;
		226	}
		227
		228	RETVAL = magic_file (cookie, path);
		229	}
		230	OUTPUT:
		231	RETVAL
		232
		233	const char *
		234	magic_mime (octet_string path)
		235	CODE:
		236	{
		237	static magic_t cookie;
		238
		239	if (!cookie)
		240	{
		241	cookie = magic_open (MAGIC_MIME \| MAGIC_SYMLINK);
		242
		243	if (cookie)
		244	magic_load (cookie, 0);
		245	else
		246	XSRETURN_UNDEF;
		247	}
		248
		249	perlinterp_release ();
		250	RETVAL = magic_file (cookie, path);
		251	perlinterp_acquire ();
		252	}
		253	OUTPUT:
		254	RETVAL
		255
129	# missing in Gtk2 perl module	256	# missing/broken in Gtk2 perl module
		257
		258	void
		259	gdk_window_clear_hints (GdkWindow *window)
		260	CODE:
		261	gdk_window_set_geometry_hints (window, 0, 0);
130		262
131	gboolean	263	gboolean
132	gdk_net_wm_supports (GdkAtom property)	264	gdk_net_wm_supports (GdkAtom property)
133	CODE:	265	CODE:
134	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	266	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
138	#endif	270	#endif
139	OUTPUT:	271	OUTPUT:
140	RETVAL	272	RETVAL
141		273
142	GdkPixbuf_noinc *	274	GdkPixbuf_noinc *
143	transpose (GdkPixbuf *pb)	275	dealpha_expose (GdkPixbuf *pb)
144	CODE:	276	CODE:
		277	perlinterp_release ();
145	{	278	{
146	int w = gdk_pixbuf_get_width (pb);	279	int w = gdk_pixbuf_get_width (pb);
147	int h = gdk_pixbuf_get_height (pb);	280	int h = gdk_pixbuf_get_height (pb);
148	int bpp = gdk_pixbuf_get_n_channels (pb);	281	int bpp = gdk_pixbuf_get_n_channels (pb);
149	int x, y, i;	282	int x, y, i;
150	guchar src = gdk_pixbuf_get_pixels (pb), dst;	283	guchar src = gdk_pixbuf_get_pixels (pb), dst;
151	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	284	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
152		285
153	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	286	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
154		287
155	dst = gdk_pixbuf_get_pixels (RETVAL);	288	dst = gdk_pixbuf_get_pixels (RETVAL);
156	dstr = gdk_pixbuf_get_rowstride (RETVAL);	289	dstr = gdk_pixbuf_get_rowstride (RETVAL);
157		290
158	for (y = 0; y < h; y++)
159	for (x = 0; x < w; x++)	291	for (x = 0; x < w; x++)
		292	for (y = 0; y < h; y++)
160	for (i = 0; i < bpp; i++)	293	for (i = 0; i < 3; i++)
161	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	294	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
162	}	295	}
		296	perlinterp_acquire ();
163	OUTPUT:	297	OUTPUT:
164	RETVAL	298	RETVAL
165		299
166	GdkPixbuf_noinc *	300	GdkPixbuf_noinc *
167	flop (GdkPixbuf *pb)	301	rotate (GdkPixbuf *pb, int angle)
168	CODE:	302	CODE:
169	{	303	perlinterp_release ();
170	int w = gdk_pixbuf_get_width (pb);	304	if (angle < 0)
171	int h = gdk_pixbuf_get_height (pb);	305	angle += 360;
172	int bpp = gdk_pixbuf_get_n_channels (pb);	306	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
173	int x, y, i;	307	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
174	guchar src = gdk_pixbuf_get_pixels (pb), dst;	308	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
175	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	309	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
176		310	: angle);
177	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	311	perlinterp_acquire ();
178
179	dst = gdk_pixbuf_get_pixels (RETVAL);
180	dstr = gdk_pixbuf_get_rowstride (RETVAL);
181
182	for (y = 0; y < h; y++)
183	for (x = 0; x < w; x++)
184	for (i = 0; i < bpp; i++)
185	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
186	}
187	OUTPUT:	312	OUTPUT:
188	RETVAL	313	RETVAL
189		314
190	GdkPixbuf_noinc *	315	GdkPixbuf_noinc *
191	load_jpeg (char *path, int thumbnail=0)	316	load_jpeg (SV *path, int thumbnail=0)
192	CODE:	317	CODE:
193	{	318	{
194	struct jpeg_decompress_struct cinfo;	319	struct jpeg_decompress_struct cinfo;
195	struct jpg_err_mgr jerr;	320	struct jpg_err_mgr jerr;
196	guchar *data;	321	guchar *data;
197	int rs;	322	int rs;
198	FILE *fp;	323	FILE *fp;
199	volatile GdkPixbuf *pb = 0;	324	volatile GdkPixbuf *pb = 0;
		325
200	RETVAL = 0;	326	RETVAL = 0;
201		327
202	if (!(fp = fopen (path, "rb")))	328	fp = fopen (SvPVbyte_nolen (path), "rb");
		329
		330	if (!fp)
203	XSRETURN_UNDEF;	331	XSRETURN_UNDEF;
		332
		333	perlinterp_release ();
204		334
205	cinfo.err = jpeg_std_error (&jerr.err);	335	cinfo.err = jpeg_std_error (&jerr.err);
206		336
207	jerr.err.error_exit = cv_error_exit;	337	jerr.err.error_exit = cv_error_exit;
208	jerr.err.output_message = cv_error_output;	338	jerr.err.output_message = cv_error_output;
…		…
213	jpeg_destroy_decompress (&cinfo);	343	jpeg_destroy_decompress (&cinfo);
214		344
215	if (pb)	345	if (pb)
216	g_object_unref ((gpointer)pb);	346	g_object_unref ((gpointer)pb);
217		347
		348	perlinterp_acquire ();
218	XSRETURN_UNDEF;	349	XSRETURN_UNDEF;
219	}	350	}
220		351
221	jpeg_create_decompress (&cinfo);	352	jpeg_create_decompress (&cinfo);
222		353
…		…
274	}	405	}
275		406
276	jpeg_finish_decompress (&cinfo);	407	jpeg_finish_decompress (&cinfo);
277	fclose (fp);	408	fclose (fp);
278	jpeg_destroy_decompress (&cinfo);	409	jpeg_destroy_decompress (&cinfo);
		410	perlinterp_acquire ();
279	}	411	}
280	OUTPUT:	412	OUTPUT:
281	RETVAL	413	RETVAL
		414
		415	void
		416	compare (GdkPixbuf a, GdkPixbuf b)
		417	PPCODE:
		418	perlinterp_release ();
		419	{
		420	int w = gdk_pixbuf_get_width (a);
		421	int h = gdk_pixbuf_get_height (a);
		422
		423	int sa = gdk_pixbuf_get_rowstride (a);
		424	int sb = gdk_pixbuf_get_rowstride (b);
		425
		426	guchar *pa = gdk_pixbuf_get_pixels (a);
		427	guchar *pb = gdk_pixbuf_get_pixels (b);
		428
		429	int x, y;
		430
		431	assert (w == gdk_pixbuf_get_width (b));
		432	assert (h == gdk_pixbuf_get_height (b));
		433
		434	assert (gdk_pixbuf_get_n_channels (a) == 3);
		435	assert (gdk_pixbuf_get_n_channels (b) == 3);
		436
		437	double diff = 0.;
		438	int peak = 0;
		439
		440	if (w && h)
		441	for (y = 0; y < h; y++)
		442	{
		443	guchar pa_ = pa + y sa;
		444	guchar pb_ = pb + y sb;
		445
		446	for (x = 0; x < w; x++)
		447	{
		448	int d;
		449
		450	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		451	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		452	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		453	}
		454	}
		455
		456	perlinterp_acquire ();
		457
		458	EXTEND (SP, 2);
		459	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		460	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		461	}
282		462
283	#############################################################################	463	#############################################################################
284		464
285	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	465	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		466
		467	# currently only works for filenames (octet strings)
286		468
287	SV *	469	SV *
288	foldcase (SV *pathsv)	470	foldcase (SV *pathsv)
289	PROTOTYPE: $	471	PROTOTYPE: $
290	CODE:	472	CODE:
291	{	473	{
292	STRLEN plen;	474	STRLEN plen;
293	U8 *path = SvPVutf8 (pathsv, plen);	475	U8 path = (U8 )SvPV (pathsv, plen);
294	U8 *pend = path + plen;	476	U8 *pend = path + plen;
295	U8 dst [plen * 6 * 3], *dstp = dst;	477	U8 dst [plen * 6 * 3], *dstp = dst;
296		478
297	while (path < pend)	479	while (path < pend)
298	{	480	{
299	U8 ch = *path;	481	U8 ch = *path;
300		482
301	if (ch >= 'a' && ch <= 'z')	483	if (ch >= 'a' && ch <= 'z')
302	dstp++ = path++;	484	dstp++ = path++;
		485	else if (ch >= 'A' && ch <= 'Z')
		486	dstp++ = path++ + ('a' - 'A');
303	else if (ch >= '0' && ch <= '9')	487	else if (ch >= '0' && ch <= '9')
304	{	488	{
305	STRLEN el, nl = 0;	489	STRLEN el, nl = 0;
306	while (path >= '0' && path <= '9' && path < pend)	490	while (path >= '0' && path <= '9' && path < pend)
307	path++, nl++;	491	path++, nl++;
…		…
310	*dstp++ = '0';	494	*dstp++ = '0';
311		495
312	memcpy (dstp, path - nl, nl);	496	memcpy (dstp, path - nl, nl);
313	dstp += nl;	497	dstp += nl;
314	}	498	}
		499	else
		500	dstp++ = path++;
		501	#if 0
315	else	502	else
316	{	503	{
317	STRLEN cl;	504	STRLEN cl;
318	to_utf8_fold (path, dstp, &cl);	505	to_utf8_fold (path, dstp, &cl);
319	dstp += cl;	506	dstp += cl;
320	path += is_utf8_char (path);	507	path += is_utf8_char (path);
321	}	508	}
		509	#endif
322	}	510	}
323		511
324	RETVAL = newSVpvn (dst, dstp - dst);	512	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
325	}	513	}
326	OUTPUT:	514	OUTPUT:
327	RETVAL	515	RETVAL
328		516
329	GdkPixbuf_noinc *	517	GdkPixbuf_noinc *
330	p7_to_pb (int w, int h, guchar *src)	518	p7_to_pb (int w, int h, SV *src_sv)
331	PROTOTYPE: @	519	PROTOTYPE: @
332	CODE:	520	CODE:
333	{	521	{
334	int x, y;	522	int x, y;
335	guchar dst, d;	523	guchar dst, d;
336	int dstr;	524	int dstr;
		525	guchar src = (guchar )SvPVbyte_nolen (src_sv);
337		526
338	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	527	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
339	dst = gdk_pixbuf_get_pixels (RETVAL);	528	dst = gdk_pixbuf_get_pixels (RETVAL);
340	dstr = gdk_pixbuf_get_rowstride (RETVAL);	529	dstr = gdk_pixbuf_get_rowstride (RETVAL);
341		530
…		…
350	}	539	}
351	}	540	}
352	OUTPUT:	541	OUTPUT:
353	RETVAL	542	RETVAL
354		543
		544	#############################################################################
		545
		546	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		547
		548	void
		549	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		550	CODE:
		551	{
		552	int w = gdk_pixbuf_get_width (pb);
		553	int h = gdk_pixbuf_get_height (pb);
		554	int x, y, i;
		555	guchar *dst;
		556	int bpp = gdk_pixbuf_get_n_channels (pb);
		557	guchar *src = gdk_pixbuf_get_pixels (pb);
		558	int sstr = gdk_pixbuf_get_rowstride (pb);
		559
		560	a85_init ();
		561
		562	for (y = 0; y < h; y++)
		563	for (x = 0; x < w; x++)
		564	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		565	a85_push (fp, src [x * bpp + y * sstr + i]);
		566
		567	a85_finish (fp);
		568	}
		569
		570	void
		571	dump_binary (PerlIO fp, GdkPixbuf pb)
		572	CODE:
		573	{
		574	int w = gdk_pixbuf_get_width (pb);
		575	int h = gdk_pixbuf_get_height (pb);
		576	int x, y, i;
		577	guchar *dst;
		578	int bpp = gdk_pixbuf_get_n_channels (pb);
		579	guchar *src = gdk_pixbuf_get_pixels (pb);
		580	int sstr = gdk_pixbuf_get_rowstride (pb);
		581
		582	for (y = 0; y < h; y++)
		583	for (x = 0; x < w; x++)
		584	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		585	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		586	}
		587
		588	#############################################################################
		589
		590	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		591
355	SV *	592	SV *
356	pb_to_p7 (GdkPixbuf *pb)	593	pb_to_hv84 (GdkPixbuf *pb)
357	CODE:	594	CODE:
358	{	595	{
359	int w = gdk_pixbuf_get_width (pb);	596	int w = gdk_pixbuf_get_width (pb);
360	int h = gdk_pixbuf_get_height (pb);	597	int h = gdk_pixbuf_get_height (pb);
361	int x, y;	598	int x, y;
362	guchar *dst;	599	guchar *dst;
363	int bpp = gdk_pixbuf_get_n_channels (pb);	600	int bpp = gdk_pixbuf_get_n_channels (pb);
364	guchar *src = gdk_pixbuf_get_pixels (pb);	601	guchar *src = gdk_pixbuf_get_pixels (pb);
365	int sstr = gdk_pixbuf_get_rowstride (pb);	602	int sstr = gdk_pixbuf_get_rowstride (pb);
366	int Er[IW], Eg[IW], Eb[IW];
367	int seed = 77;
368
369	RETVAL = newSV (w * h);
370	SvPOK_only (RETVAL);
371	SvCUR_set (RETVAL, w * h);
372
373	dst = SvPVX (RETVAL);
374
375	memset (Er, 0, sizeof (int) * IW);
376	memset (Eg, 0, sizeof (int) * IW);
377	memset (Eb, 0, sizeof (int) * IW);
378
379	/* some primitive error distribution + random dithering */
380
381	for (y = 0; y < h; y++)
382	{
383	int er = 0, eg = 0, eb = 0;
384
385	for (x = 0; x < w; x++)
386	{
387	int r, g, b;
388	guchar p = src + x bpp + y * sstr;
389
390	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
391	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
392	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
393
394	r = r > 7 ? 7 : r < 0 ? 0 : r;
395	g = g > 7 ? 7 : g < 0 ? 0 : g;
396	b = b > 3 ? 3 : b < 0 ? 0 : b;
397
398	er += p[0] - (r * 255 + 4) / 7;
399	eg += p[1] - (g * 255 + 4) / 7;
400	eb += p[2] - (b * 255 + 2) / 3;
401
402	Er[x] = er >> 1; er -= (er + 1) >> 1;
403	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
404	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
405
406	*dst++ = r << 5 \| g << 2 \| b;
407	}
408	}
409	}
410	OUTPUT:
411	RETVAL
412
413	#############################################################################
414
415	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
416
417	void
418	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
419	CODE:
420	{
421	int w = gdk_pixbuf_get_width (pb);
422	int h = gdk_pixbuf_get_height (pb);
423	int x, y, i;
424	guchar *dst;
425	int bpp = gdk_pixbuf_get_n_channels (pb);
426	guchar *src = gdk_pixbuf_get_pixels (pb);
427	int sstr = gdk_pixbuf_get_rowstride (pb);
428
429	a85_init ();
430
431	for (y = 0; y < h; y++)
432	for (x = 0; x < w; x++)
433	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
434	a85_push (fp, src [x * bpp + y * sstr + i]);
435
436	a85_finish (fp);
437	}
438
439	void
440	dump_binary (PerlIO fp, GdkPixbuf pb)
441	CODE:
442	{
443	int w = gdk_pixbuf_get_width (pb);
444	int h = gdk_pixbuf_get_height (pb);
445	int x, y, i;
446	guchar *dst;
447	int bpp = gdk_pixbuf_get_n_channels (pb);
448	guchar *src = gdk_pixbuf_get_pixels (pb);
449	int sstr = gdk_pixbuf_get_rowstride (pb);
450
451	for (y = 0; y < h; y++)
452	for (x = 0; x < w; x++)
453	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
454	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
455	}
456
457	#############################################################################
458
459	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
460
461	SV *
462	pb_to_hv84 (GdkPixbuf *pb)
463	CODE:
464	{
465	int w = gdk_pixbuf_get_width (pb);
466	int h = gdk_pixbuf_get_height (pb);
467	int x, y;
468	guchar *dst;
469	int bpp = gdk_pixbuf_get_n_channels (pb);
470	guchar *src = gdk_pixbuf_get_pixels (pb);
471	int sstr = gdk_pixbuf_get_rowstride (pb);
472		603
473	RETVAL = newSV (6 * 8 * 12 / 8);	604	RETVAL = newSV (6 * 8 * 12 / 8);
474	SvPOK_only (RETVAL);	605	SvPOK_only (RETVAL);
475	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	606	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
476		607
477	dst = SvPVX (RETVAL);	608	dst = (guchar *)SvPVX (RETVAL);
478		609
479	/* some primitive error distribution + random dithering */	610	/* some primitive error distribution + random dithering */
480		611
481	for (y = 0; y < h; y++)	612	for (y = 0; y < h; y++)
482	{	613	{
…		…
545	#############################################################################	676	#############################################################################
546		677
547	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	678	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
548		679
549	SV *	680	SV *
550	make_histograms (SV *ar)	681	extract_features (SV *ar)
551	CODE:	682	CODE:
552	{	683	{
553	int i;	684	int i;
554	AV av, result;	685	AV av, result;
555		686
556	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	687	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
557	croak ("Not an array ref as first argument to make_histogram");	688	croak ("Not an array ref as first argument to extract_features");
558		689
559	av = (AV *) SvRV (ar);	690	av = (AV *) SvRV (ar);
560	result = newAV ();	691	result = newAV ();
561		692
562	for (i = 0; i <= av_len (av); ++i)	693	for (i = 0; i <= av_len (av); ++i)
563	{	694	{
564	const int HISTSIZE = 64;
565
566	int j;
567	SV sv = av_fetch (av, i, 1);	695	SV sv = av_fetch (av, i, 1);
568	STRLEN len;
569	char *buf = SvPVbyte (sv, len);
570
571	int tmphist[HISTSIZE];
572	float *hist;
573
574	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	696	SV histsv = newSV (9 sizeof (float) + 1);
		697
575	SvPOK_on (histsv);	698	SvPOK_on (histsv);
576	SvCUR_set (histsv, HISTSIZE * sizeof (float));	699	SvCUR_set (histsv, 9 * sizeof (float));
577	hist = (float *)SvPVX (histsv);	700	float hist = (float )SvPVX (histsv);
578		701
579	Zero (tmphist, sizeof (tmphist), char);	702	struct feature f_h, f_s, f_v;
		703	feature_init (&f_h);
		704	feature_init (&f_s);
		705	feature_init (&f_v);
580		706
581	for (j = len; j--; )
582	{
583	unsigned int idx
584	= ((*buf & 0xc0) >> 2)
585	\| ((*buf & 0x18) >> 1)
586	\| (*buf & 0x03);
587
588	++tmphist[idx];
589	++buf;
590	}
591		707	{
592	for (j = 0; j < HISTSIZE; ++j)	708	STRLEN len;
593	hist[j] = (float)tmphist[j] / (len + 1e-30);	709	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		710	while (len >= 3)
		711	{
		712	unsigned int r, g, b, h, s, v;
		713	r = buf++; g = buf++; b = *buf++;
		714	rgb_to_hsv (r, g, b, &h, &s, &v);
		715
		716	feature_update_pass_1 (&f_h, h);
		717	feature_update_pass_1 (&f_s, s);
		718	feature_update_pass_1 (&f_v, v);
		719
		720	len -= 3;
		721	}
		722
		723	feature_finish_pass_1 (&f_h);
		724	feature_finish_pass_1 (&f_s);
		725	feature_finish_pass_1 (&f_v);
		726	}
		727
		728	{
		729	STRLEN len;
		730	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		731	while (len >= 3)
		732	{
		733	unsigned int r, g, b, h, s, v;
		734	r = buf++; g = buf++; b = *buf++;
		735	rgb_to_hsv (r, g, b, &h, &s, &v);
		736
		737	feature_update_pass_2 (&f_h, h);
		738	feature_update_pass_2 (&f_s, s);
		739	feature_update_pass_2 (&f_v, v);
		740
		741	len -= 3;
		742	}
		743
		744	feature_finish_pass_2 (&f_h);
		745	feature_finish_pass_2 (&f_s);
		746	feature_finish_pass_2 (&f_v);
		747	}
		748
		749	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		750	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		751	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
594		752
595	av_push (result, histsv);	753	av_push (result, histsv);
596	}	754	}
597		755
598	RETVAL = newRV_noinc ((SV *)result);	756	RETVAL = newRV_noinc ((SV *)result);
599	}	757	}
600	OUTPUT:	758	OUTPUT:
601	RETVAL	759	RETVAL
602		760
603

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Comparing CV/CV.xs (file contents): Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs. Revision 1.46 by root, Sat Jul 4 05:31:17 2015 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs.
Revision 1.46 by root, Sat Jul 4 05:31:17 2015 UTC