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

Comparing CV/CV.xs (file contents):
Revision 1.25 by root, Fri Aug 19 00:34:54 2005 UTC vs.
Revision 1.41 by root, Sat Mar 1 04:11:26 2008 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	f->v1 /= 255.;
		124	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		125	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		126	}
		127
70	static guint32 a85_val;	128	static guint32 a85_val;
71	static guint a85_cnt;	129	static guint a85_cnt;
72	static guchar a85_buf[LINELENGTH], *a85_ptr;	130	static guchar a85_buf[LINELENGTH], *a85_ptr;
73		131
74	static void	132	static void
…		…
126		184
127	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	185	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128		186
129	PROTOTYPES: ENABLE	187	PROTOTYPES: ENABLE
130		188
		189	# missing function in perl. really :)
		190	int
		191	common_prefix_length (a, b)
		192	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		193	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		194	CODE:
		195	RETVAL = 0;
		196
		197	while (a == b && *a)
		198	{
		199	RETVAL += (*a & 0xc0) != 0x80;
		200	a++, b++;
		201	}
		202
		203	OUTPUT:
		204	RETVAL
		205
		206	const char *
		207	magic (const char *path)
		208	CODE:
		209	{
		210	static magic_t cookie;
		211
		212	if (!cookie)
		213	{
		214	cookie = magic_open (MAGIC_NONE);
		215
		216	if (cookie)
		217	magic_load (cookie, 0);
		218	else
		219	XSRETURN_UNDEF;
		220	}
		221
		222	RETVAL = magic_file (cookie, path);
		223	}
		224	OUTPUT:
		225	RETVAL
		226
		227	const char *
		228	magic_mime (const char *path)
		229	CODE:
		230	{
		231	static magic_t cookie;
		232
		233	if (!cookie)
		234	{
		235	cookie = magic_open (MAGIC_MIME);
		236
		237	if (cookie)
		238	magic_load (cookie, 0);
		239	else
		240	XSRETURN_UNDEF;
		241	}
		242
		243	RETVAL = magic_file (cookie, path);
		244	}
		245	OUTPUT:
		246	RETVAL
		247
131	# missing in Gtk2 perl module	248	# missing/broken in Gtk2 perl module
		249
		250	void
		251	gdk_window_clear_hints (GdkWindow *window)
		252	CODE:
		253	gdk_window_set_geometry_hints (window, 0, 0);
132		254
133	gboolean	255	gboolean
134	gdk_net_wm_supports (GdkAtom property)	256	gdk_net_wm_supports (GdkAtom property)
135	CODE:	257	CODE:
136	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	258	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
140	#endif	262	#endif
141	OUTPUT:	263	OUTPUT:
142	RETVAL	264	RETVAL
143		265
144	GdkPixbuf_noinc *	266	GdkPixbuf_noinc *
145	transpose (GdkPixbuf *pb)	267	dealpha_expose (GdkPixbuf *pb)
146	CODE:	268	CODE:
147	{	269	{
148	int w = gdk_pixbuf_get_width (pb);	270	int w = gdk_pixbuf_get_width (pb);
149	int h = gdk_pixbuf_get_height (pb);	271	int h = gdk_pixbuf_get_height (pb);
150	int bpp = gdk_pixbuf_get_n_channels (pb);	272	int bpp = gdk_pixbuf_get_n_channels (pb);
151	int x, y, i;	273	int x, y, i;
152	guchar src = gdk_pixbuf_get_pixels (pb), dst;	274	guchar src = gdk_pixbuf_get_pixels (pb), dst;
153	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	275	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
154		276
155	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	277	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
156		278
157	dst = gdk_pixbuf_get_pixels (RETVAL);	279	dst = gdk_pixbuf_get_pixels (RETVAL);
158	dstr = gdk_pixbuf_get_rowstride (RETVAL);	280	dstr = gdk_pixbuf_get_rowstride (RETVAL);
159		281
160	for (y = 0; y < h; y++)
161	for (x = 0; x < w; x++)	282	for (x = 0; x < w; x++)
		283	for (y = 0; y < h; y++)
162	for (i = 0; i < bpp; i++)	284	for (i = 0; i < 3; i++)
163	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	285	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
164	}	286	}
165	OUTPUT:	287	OUTPUT:
166	RETVAL	288	RETVAL
167		289
168	GdkPixbuf_noinc *	290	GdkPixbuf_noinc *
169	flop (GdkPixbuf *pb)	291	rotate (GdkPixbuf *pb, int angle)
170	CODE:	292	CODE:
171	{	293	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
172	int w = gdk_pixbuf_get_width (pb);	294	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
173	int h = gdk_pixbuf_get_height (pb);	295	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
174	int bpp = gdk_pixbuf_get_n_channels (pb);	296	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
175	int x, y, i;	297	: 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, w, h);
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[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
188	}
189	OUTPUT:	298	OUTPUT:
190	RETVAL	299	RETVAL
191		300
192	GdkPixbuf_noinc *	301	GdkPixbuf_noinc *
193	load_jpeg (SV *path, int thumbnail=0)	302	load_jpeg (SV *path, int thumbnail=0)
…		…
197	struct jpg_err_mgr jerr;	306	struct jpg_err_mgr jerr;
198	guchar *data;	307	guchar *data;
199	int rs;	308	int rs;
200	FILE *fp;	309	FILE *fp;
201	volatile GdkPixbuf *pb = 0;	310	volatile GdkPixbuf *pb = 0;
202	gchar *filename;
203		311
204	RETVAL = 0;	312	RETVAL = 0;
205		313
206	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
207	fp = fopen (filename, "rb");	314	fp = fopen (SvPVbyte_nolen (path), "rb");
208	g_free (filename);
209		315
210	if (!fp)	316	if (!fp)
211	XSRETURN_UNDEF;	317	XSRETURN_UNDEF;
212		318
213	cinfo.err = jpeg_std_error (&jerr.err);	319	cinfo.err = jpeg_std_error (&jerr.err);
…		…
286	jpeg_destroy_decompress (&cinfo);	392	jpeg_destroy_decompress (&cinfo);
287	}	393	}
288	OUTPUT:	394	OUTPUT:
289	RETVAL	395	RETVAL
290		396
		397	void
		398	compare (GdkPixbuf a, GdkPixbuf b)
		399	PPCODE:
		400	{
		401	int w = gdk_pixbuf_get_width (a);
		402	int h = gdk_pixbuf_get_height (a);
		403	int sa = gdk_pixbuf_get_rowstride (a);
		404	int sb = gdk_pixbuf_get_rowstride (b);
		405
		406	guchar *pa = gdk_pixbuf_get_pixels (a);
		407	guchar *pb = gdk_pixbuf_get_pixels (b);
		408
		409	int x, y;
		410
		411	assert (w == gdk_pixbuf_get_width (b));
		412	assert (h == gdk_pixbuf_get_height (b));
		413
		414	assert (gdk_pixbuf_get_n_channels (a) == 3);
		415	assert (gdk_pixbuf_get_n_channels (b) == 3);
		416
		417	double diff = 0.;
		418	int peak = 0;
		419
		420	if (w && h)
		421	for (y = 0; y < h; y++)
		422	{
		423	guchar pa_ = pa + y sa;
		424	guchar pb_ = pb + y sb;
		425
		426	for (x = 0; x < w; x++)
		427	{
		428	int d;
		429
		430	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		431	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		432	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		433	}
		434	}
		435
		436	EXTEND (SP, 2);
		437	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		438	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		439	}
		440
291	#############################################################################	441	#############################################################################
292		442
293	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	443	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		444
		445	# currently only works for filenames (octet strings)
294		446
295	SV *	447	SV *
296	foldcase (SV *pathsv)	448	foldcase (SV *pathsv)
297	PROTOTYPE: $	449	PROTOTYPE: $
298	CODE:	450	CODE:
299	{	451	{
300	STRLEN plen;	452	STRLEN plen;
301	U8 path = (U8 )SvPVutf8 (pathsv, plen);	453	U8 path = (U8 )SvPV (pathsv, plen);
302	U8 *pend = path + plen;	454	U8 *pend = path + plen;
303	U8 dst [plen * 6 * 3], *dstp = dst;	455	U8 dst [plen * 6 * 3], *dstp = dst;
304		456
305	while (path < pend)	457	while (path < pend)
306	{	458	{
307	U8 ch = *path;	459	U8 ch = *path;
308		460
309	if (ch >= 'a' && ch <= 'z')	461	if (ch >= 'a' && ch <= 'z')
310	dstp++ = path++;	462	dstp++ = path++;
		463	else if (ch >= 'A' && ch <= 'Z')
		464	dstp++ = path++ + ('a' - 'A');
311	else if (ch >= '0' && ch <= '9')	465	else if (ch >= '0' && ch <= '9')
312	{	466	{
313	STRLEN el, nl = 0;	467	STRLEN el, nl = 0;
314	while (path >= '0' && path <= '9' && path < pend)	468	while (path >= '0' && path <= '9' && path < pend)
315	path++, nl++;	469	path++, nl++;
…		…
318	*dstp++ = '0';	472	*dstp++ = '0';
319		473
320	memcpy (dstp, path - nl, nl);	474	memcpy (dstp, path - nl, nl);
321	dstp += nl;	475	dstp += nl;
322	}	476	}
		477	else
		478	dstp++ = path++;
		479	#if 0
323	else	480	else
324	{	481	{
325	STRLEN cl;	482	STRLEN cl;
326	to_utf8_fold (path, dstp, &cl);	483	to_utf8_fold (path, dstp, &cl);
327	dstp += cl;	484	dstp += cl;
328	path += is_utf8_char (path);	485	path += is_utf8_char (path);
329	}	486	}
		487	#endif
330	}	488	}
331		489
332	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	490	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
333	}	491	}
334	OUTPUT:	492	OUTPUT:
…		…
359	}	517	}
360	}	518	}
361	OUTPUT:	519	OUTPUT:
362	RETVAL	520	RETVAL
363		521
		522	#############################################################################
		523
		524	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		525
		526	void
		527	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		528	CODE:
		529	{
		530	int w = gdk_pixbuf_get_width (pb);
		531	int h = gdk_pixbuf_get_height (pb);
		532	int x, y, i;
		533	guchar *dst;
		534	int bpp = gdk_pixbuf_get_n_channels (pb);
		535	guchar *src = gdk_pixbuf_get_pixels (pb);
		536	int sstr = gdk_pixbuf_get_rowstride (pb);
		537
		538	a85_init ();
		539
		540	for (y = 0; y < h; y++)
		541	for (x = 0; x < w; x++)
		542	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		543	a85_push (fp, src [x * bpp + y * sstr + i]);
		544
		545	a85_finish (fp);
		546	}
		547
		548	void
		549	dump_binary (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	for (y = 0; y < h; y++)
		561	for (x = 0; x < w; x++)
		562	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		563	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		564	}
		565
		566	#############################################################################
		567
		568	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		569
364	SV *	570	SV *
365	pb_to_p7 (GdkPixbuf *pb)	571	pb_to_hv84 (GdkPixbuf *pb)
366	CODE:	572	CODE:
367	{	573	{
368	int w = gdk_pixbuf_get_width (pb);	574	int w = gdk_pixbuf_get_width (pb);
369	int h = gdk_pixbuf_get_height (pb);	575	int h = gdk_pixbuf_get_height (pb);
370	int x, y;	576	int x, y;
371	guchar *dst;	577	guchar *dst;
372	int bpp = gdk_pixbuf_get_n_channels (pb);	578	int bpp = gdk_pixbuf_get_n_channels (pb);
373	guchar *src = gdk_pixbuf_get_pixels (pb);	579	guchar *src = gdk_pixbuf_get_pixels (pb);
374	int sstr = gdk_pixbuf_get_rowstride (pb);	580	int sstr = gdk_pixbuf_get_rowstride (pb);
375	int Er[IW], Eg[IW], Eb[IW];
376	int seed = 77;
377
378	RETVAL = newSV (w * h);
379	SvPOK_only (RETVAL);
380	SvCUR_set (RETVAL, w * h);
381
382	dst = (guchar *)SvPVX (RETVAL);
383
384	memset (Er, 0, sizeof (int) * IW);
385	memset (Eg, 0, sizeof (int) * IW);
386	memset (Eb, 0, sizeof (int) * IW);
387
388	/* some primitive error distribution + random dithering */
389
390	for (y = 0; y < h; y++)
391	{
392	int er = 0, eg = 0, eb = 0;
393
394	for (x = 0; x < w; x++)
395	{
396	int r, g, b;
397	guchar p = src + x bpp + y * sstr;
398
399	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
400	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
401	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
402
403	r = r > 7 ? 7 : r < 0 ? 0 : r;
404	g = g > 7 ? 7 : g < 0 ? 0 : g;
405	b = b > 3 ? 3 : b < 0 ? 0 : b;
406
407	er += p[0] - (r * 255 + 4) / 7;
408	eg += p[1] - (g * 255 + 4) / 7;
409	eb += p[2] - (b * 255 + 2) / 3;
410
411	Er[x] = er >> 1; er -= (er + 1) >> 1;
412	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
413	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
414
415	*dst++ = r << 5 \| g << 2 \| b;
416	}
417	}
418	}
419	OUTPUT:
420	RETVAL
421
422	#############################################################################
423
424	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
425
426	void
427	dump_ascii85 (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	a85_init ();
439
440	for (y = 0; y < h; y++)
441	for (x = 0; x < w; x++)
442	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
443	a85_push (fp, src [x * bpp + y * sstr + i]);
444
445	a85_finish (fp);
446	}
447
448	void
449	dump_binary (PerlIO fp, 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, i;
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
460	for (y = 0; y < h; y++)
461	for (x = 0; x < w; x++)
462	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
463	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
464	}
465
466	#############################################################################
467
468	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
469
470	SV *
471	pb_to_hv84 (GdkPixbuf *pb)
472	CODE:
473	{
474	int w = gdk_pixbuf_get_width (pb);
475	int h = gdk_pixbuf_get_height (pb);
476	int x, y;
477	guchar *dst;
478	int bpp = gdk_pixbuf_get_n_channels (pb);
479	guchar *src = gdk_pixbuf_get_pixels (pb);
480	int sstr = gdk_pixbuf_get_rowstride (pb);
481		581
482	RETVAL = newSV (6 * 8 * 12 / 8);	582	RETVAL = newSV (6 * 8 * 12 / 8);
483	SvPOK_only (RETVAL);	583	SvPOK_only (RETVAL);
484	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	584	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
485		585
…		…
554	#############################################################################	654	#############################################################################
555		655
556	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	656	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
557		657
558	SV *	658	SV *
559	make_histograms (SV *ar)	659	extract_features (SV *ar)
560	CODE:	660	CODE:
561	{	661	{
562	int i;	662	int i;
563	AV av, result;	663	AV av, result;
564		664
565	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	665	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
566	croak ("Not an array ref as first argument to make_histogram");	666	croak ("Not an array ref as first argument to extract_features");
567		667
568	av = (AV *) SvRV (ar);	668	av = (AV *) SvRV (ar);
569	result = newAV ();	669	result = newAV ();
570		670
571	for (i = 0; i <= av_len (av); ++i)	671	for (i = 0; i <= av_len (av); ++i)
572	{	672	{
573	const int HISTSIZE = 64;
574
575	int j;
576	SV sv = av_fetch (av, i, 1);	673	SV sv = av_fetch (av, i, 1);
577	STRLEN len;
578	char *buf = SvPVbyte (sv, len);
579
580	int tmphist[HISTSIZE];
581	float *hist;
582
583	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	674	SV histsv = newSV (9 sizeof (float) + 1);
		675
584	SvPOK_on (histsv);	676	SvPOK_on (histsv);
585	SvCUR_set (histsv, HISTSIZE * sizeof (float));	677	SvCUR_set (histsv, 9 * sizeof (float));
586	hist = (float *)SvPVX (histsv);	678	float hist = (float )SvPVX (histsv);
587		679
588	Zero (tmphist, sizeof (tmphist), char);	680	struct feature f_h, f_s, f_v;
		681	feature_init (&f_h);
		682	feature_init (&f_s);
		683	feature_init (&f_v);
589		684
590	for (j = len; j--; )
591	{
592	unsigned int idx
593	= ((*buf & 0xc0) >> 2)
594	\| ((*buf & 0x18) >> 1)
595	\| (*buf & 0x03);
596
597	++tmphist[idx];
598	++buf;
599	}
600		685	{
601	for (j = 0; j < HISTSIZE; ++j)	686	STRLEN len;
602	hist[j] = (float)tmphist[j] / (len + 1e-30);	687	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		688	while (len >= 3)
		689	{
		690	unsigned int r, g, b, h, s, v;
		691	r = buf++; g = buf++; b = *buf++;
		692	rgb_to_hsv (r, g, b, &h, &s, &v);
		693
		694	feature_update_pass_1 (&f_h, h);
		695	feature_update_pass_1 (&f_s, s);
		696	feature_update_pass_1 (&f_v, v);
		697
		698	len -= 3;
		699	}
		700
		701	feature_finish_pass_1 (&f_h);
		702	feature_finish_pass_1 (&f_s);
		703	feature_finish_pass_1 (&f_v);
		704	}
		705
		706	{
		707	STRLEN len;
		708	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		709	while (len >= 3)
		710	{
		711	unsigned int r, g, b, h, s, v;
		712	r = buf++; g = buf++; b = *buf++;
		713	rgb_to_hsv (r, g, b, &h, &s, &v);
		714
		715	feature_update_pass_2 (&f_h, h);
		716	feature_update_pass_2 (&f_s, s);
		717	feature_update_pass_2 (&f_v, v);
		718
		719	len -= 3;
		720	}
		721
		722	feature_finish_pass_2 (&f_h);
		723	feature_finish_pass_2 (&f_s);
		724	feature_finish_pass_2 (&f_v);
		725	}
		726
		727	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		728	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		729	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
603		730
604	av_push (result, histsv);	731	av_push (result, histsv);
605	}	732	}
606		733
607	RETVAL = newRV_noinc ((SV *)result);	734	RETVAL = newRV_noinc ((SV *)result);
608	}	735	}
609	OUTPUT:	736	OUTPUT:
610	RETVAL	737	RETVAL
611		738
612

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Comparing CV/CV.xs (file contents): Revision 1.25 by root, Fri Aug 19 00:34:54 2005 UTC vs. Revision 1.41 by root, Sat Mar 1 04:11:26 2008 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.25 by root, Fri Aug 19 00:34:54 2005 UTC vs.
Revision 1.41 by root, Sat Mar 1 04:11:26 2008 UTC