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

Comparing CV/CV.xs (file contents):
Revision 1.26 by root, Sun Aug 21 02:18:30 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)
…		…
145	dealpha_expose (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	fprintf (stderr, "new %d %d\n", w, h);
151	int bpp = gdk_pixbuf_get_n_channels (pb);	272	int bpp = gdk_pixbuf_get_n_channels (pb);
152	int x, y, i;	273	int x, y, i;
153	guchar src = gdk_pixbuf_get_pixels (pb), dst;	274	guchar src = gdk_pixbuf_get_pixels (pb), dst;
154	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	275	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
155		276
…		…
165	}	286	}
166	OUTPUT:	287	OUTPUT:
167	RETVAL	288	RETVAL
168		289
169	GdkPixbuf_noinc *	290	GdkPixbuf_noinc *
170	transpose (GdkPixbuf *pb)	291	rotate (GdkPixbuf *pb, int angle)
171	CODE:	292	CODE:
172	{	293	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
173	int w = gdk_pixbuf_get_width (pb);	294	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
174	int h = gdk_pixbuf_get_height (pb);	295	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
175	int bpp = gdk_pixbuf_get_n_channels (pb);	296	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
176	int x, y, i;	297	: angle);
177	guchar src = gdk_pixbuf_get_pixels (pb), dst;
178	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
179
180	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);
181
182	dst = gdk_pixbuf_get_pixels (RETVAL);
183	dstr = gdk_pixbuf_get_rowstride (RETVAL);
184
185	for (y = 0; y < h; y++)
186	for (x = 0; x < w; x++)
187	for (i = 0; i < bpp; i++)
188	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];
189	}
190	OUTPUT:
191	RETVAL
192
193	GdkPixbuf_noinc *
194	flop (GdkPixbuf *pb)
195	CODE:
196	{
197	int w = gdk_pixbuf_get_width (pb);
198	int h = gdk_pixbuf_get_height (pb);
199	int bpp = gdk_pixbuf_get_n_channels (pb);
200	int x, y, i;
201	guchar src = gdk_pixbuf_get_pixels (pb), dst;
202	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
203
204	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);
205
206	dst = gdk_pixbuf_get_pixels (RETVAL);
207	dstr = gdk_pixbuf_get_rowstride (RETVAL);
208
209	for (y = 0; y < h; y++)
210	for (x = 0; x < w; x++)
211	for (i = 0; i < bpp; i++)
212	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
213	}
214	OUTPUT:	298	OUTPUT:
215	RETVAL	299	RETVAL
216		300
217	GdkPixbuf_noinc *	301	GdkPixbuf_noinc *
218	load_jpeg (SV *path, int thumbnail=0)	302	load_jpeg (SV *path, int thumbnail=0)
…		…
222	struct jpg_err_mgr jerr;	306	struct jpg_err_mgr jerr;
223	guchar *data;	307	guchar *data;
224	int rs;	308	int rs;
225	FILE *fp;	309	FILE *fp;
226	volatile GdkPixbuf *pb = 0;	310	volatile GdkPixbuf *pb = 0;
227	gchar *filename;
228		311
229	RETVAL = 0;	312	RETVAL = 0;
230		313
231	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
232	fp = fopen (filename, "rb");	314	fp = fopen (SvPVbyte_nolen (path), "rb");
233	g_free (filename);
234		315
235	if (!fp)	316	if (!fp)
236	XSRETURN_UNDEF;	317	XSRETURN_UNDEF;
237		318
238	cinfo.err = jpeg_std_error (&jerr.err);	319	cinfo.err = jpeg_std_error (&jerr.err);
…		…
311	jpeg_destroy_decompress (&cinfo);	392	jpeg_destroy_decompress (&cinfo);
312	}	393	}
313	OUTPUT:	394	OUTPUT:
314	RETVAL	395	RETVAL
315		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
316	#############################################################################	441	#############################################################################
317		442
318	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	443	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		444
		445	# currently only works for filenames (octet strings)
319		446
320	SV *	447	SV *
321	foldcase (SV *pathsv)	448	foldcase (SV *pathsv)
322	PROTOTYPE: $	449	PROTOTYPE: $
323	CODE:	450	CODE:
324	{	451	{
325	STRLEN plen;	452	STRLEN plen;
326	U8 path = (U8 )SvPVutf8 (pathsv, plen);	453	U8 path = (U8 )SvPV (pathsv, plen);
327	U8 *pend = path + plen;	454	U8 *pend = path + plen;
328	U8 dst [plen * 6 * 3], *dstp = dst;	455	U8 dst [plen * 6 * 3], *dstp = dst;
329		456
330	while (path < pend)	457	while (path < pend)
331	{	458	{
332	U8 ch = *path;	459	U8 ch = *path;
333		460
334	if (ch >= 'a' && ch <= 'z')	461	if (ch >= 'a' && ch <= 'z')
335	dstp++ = path++;	462	dstp++ = path++;
		463	else if (ch >= 'A' && ch <= 'Z')
		464	dstp++ = path++ + ('a' - 'A');
336	else if (ch >= '0' && ch <= '9')	465	else if (ch >= '0' && ch <= '9')
337	{	466	{
338	STRLEN el, nl = 0;	467	STRLEN el, nl = 0;
339	while (path >= '0' && path <= '9' && path < pend)	468	while (path >= '0' && path <= '9' && path < pend)
340	path++, nl++;	469	path++, nl++;
…		…
343	*dstp++ = '0';	472	*dstp++ = '0';
344		473
345	memcpy (dstp, path - nl, nl);	474	memcpy (dstp, path - nl, nl);
346	dstp += nl;	475	dstp += nl;
347	}	476	}
		477	else
		478	dstp++ = path++;
		479	#if 0
348	else	480	else
349	{	481	{
350	STRLEN cl;	482	STRLEN cl;
351	to_utf8_fold (path, dstp, &cl);	483	to_utf8_fold (path, dstp, &cl);
352	dstp += cl;	484	dstp += cl;
353	path += is_utf8_char (path);	485	path += is_utf8_char (path);
354	}	486	}
		487	#endif
355	}	488	}
356		489
357	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	490	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
358	}	491	}
359	OUTPUT:	492	OUTPUT:
…		…
384	}	517	}
385	}	518	}
386	OUTPUT:	519	OUTPUT:
387	RETVAL	520	RETVAL
388		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
389	SV *	570	SV *
390	pb_to_p7 (GdkPixbuf *pb)	571	pb_to_hv84 (GdkPixbuf *pb)
391	CODE:	572	CODE:
392	{	573	{
393	int w = gdk_pixbuf_get_width (pb);	574	int w = gdk_pixbuf_get_width (pb);
394	int h = gdk_pixbuf_get_height (pb);	575	int h = gdk_pixbuf_get_height (pb);
395	int x, y;	576	int x, y;
396	guchar *dst;	577	guchar *dst;
397	int bpp = gdk_pixbuf_get_n_channels (pb);	578	int bpp = gdk_pixbuf_get_n_channels (pb);
398	guchar *src = gdk_pixbuf_get_pixels (pb);	579	guchar *src = gdk_pixbuf_get_pixels (pb);
399	int sstr = gdk_pixbuf_get_rowstride (pb);	580	int sstr = gdk_pixbuf_get_rowstride (pb);
400	int Er[IW], Eg[IW], Eb[IW];
401	int seed = 77;
402
403	RETVAL = newSV (w * h);
404	SvPOK_only (RETVAL);
405	SvCUR_set (RETVAL, w * h);
406
407	dst = (guchar *)SvPVX (RETVAL);
408
409	memset (Er, 0, sizeof (int) * IW);
410	memset (Eg, 0, sizeof (int) * IW);
411	memset (Eb, 0, sizeof (int) * IW);
412
413	/* some primitive error distribution + random dithering */
414
415	for (y = 0; y < h; y++)
416	{
417	int er = 0, eg = 0, eb = 0;
418
419	for (x = 0; x < w; x++)
420	{
421	int r, g, b;
422	guchar p = src + x bpp + y * sstr;
423
424	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
425	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
426	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
427
428	r = r > 7 ? 7 : r < 0 ? 0 : r;
429	g = g > 7 ? 7 : g < 0 ? 0 : g;
430	b = b > 3 ? 3 : b < 0 ? 0 : b;
431
432	er += p[0] - (r * 255 + 4) / 7;
433	eg += p[1] - (g * 255 + 4) / 7;
434	eb += p[2] - (b * 255 + 2) / 3;
435
436	Er[x] = er >> 1; er -= (er + 1) >> 1;
437	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
438	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
439
440	*dst++ = r << 5 \| g << 2 \| b;
441	}
442	}
443	}
444	OUTPUT:
445	RETVAL
446
447	#############################################################################
448
449	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
450
451	void
452	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
453	CODE:
454	{
455	int w = gdk_pixbuf_get_width (pb);
456	int h = gdk_pixbuf_get_height (pb);
457	int x, y, i;
458	guchar *dst;
459	int bpp = gdk_pixbuf_get_n_channels (pb);
460	guchar *src = gdk_pixbuf_get_pixels (pb);
461	int sstr = gdk_pixbuf_get_rowstride (pb);
462
463	a85_init ();
464
465	for (y = 0; y < h; y++)
466	for (x = 0; x < w; x++)
467	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
468	a85_push (fp, src [x * bpp + y * sstr + i]);
469
470	a85_finish (fp);
471	}
472
473	void
474	dump_binary (PerlIO fp, GdkPixbuf pb)
475	CODE:
476	{
477	int w = gdk_pixbuf_get_width (pb);
478	int h = gdk_pixbuf_get_height (pb);
479	int x, y, i;
480	guchar *dst;
481	int bpp = gdk_pixbuf_get_n_channels (pb);
482	guchar *src = gdk_pixbuf_get_pixels (pb);
483	int sstr = gdk_pixbuf_get_rowstride (pb);
484
485	for (y = 0; y < h; y++)
486	for (x = 0; x < w; x++)
487	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
488	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
489	}
490
491	#############################################################################
492
493	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
494
495	SV *
496	pb_to_hv84 (GdkPixbuf *pb)
497	CODE:
498	{
499	int w = gdk_pixbuf_get_width (pb);
500	int h = gdk_pixbuf_get_height (pb);
501	int x, y;
502	guchar *dst;
503	int bpp = gdk_pixbuf_get_n_channels (pb);
504	guchar *src = gdk_pixbuf_get_pixels (pb);
505	int sstr = gdk_pixbuf_get_rowstride (pb);
506		581
507	RETVAL = newSV (6 * 8 * 12 / 8);	582	RETVAL = newSV (6 * 8 * 12 / 8);
508	SvPOK_only (RETVAL);	583	SvPOK_only (RETVAL);
509	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	584	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
510		585
…		…
579	#############################################################################	654	#############################################################################
580		655
581	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	656	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
582		657
583	SV *	658	SV *
584	make_histograms (SV *ar)	659	extract_features (SV *ar)
585	CODE:	660	CODE:
586	{	661	{
587	int i;	662	int i;
588	AV av, result;	663	AV av, result;
589		664
590	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	665	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
591	croak ("Not an array ref as first argument to make_histogram");	666	croak ("Not an array ref as first argument to extract_features");
592		667
593	av = (AV *) SvRV (ar);	668	av = (AV *) SvRV (ar);
594	result = newAV ();	669	result = newAV ();
595		670
596	for (i = 0; i <= av_len (av); ++i)	671	for (i = 0; i <= av_len (av); ++i)
597	{	672	{
598	const int HISTSIZE = 64;
599
600	int j;
601	SV sv = av_fetch (av, i, 1);	673	SV sv = av_fetch (av, i, 1);
602	STRLEN len;
603	char *buf = SvPVbyte (sv, len);
604
605	int tmphist[HISTSIZE];
606	float *hist;
607
608	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	674	SV histsv = newSV (9 sizeof (float) + 1);
		675
609	SvPOK_on (histsv);	676	SvPOK_on (histsv);
610	SvCUR_set (histsv, HISTSIZE * sizeof (float));	677	SvCUR_set (histsv, 9 * sizeof (float));
611	hist = (float *)SvPVX (histsv);	678	float hist = (float )SvPVX (histsv);
612		679
613	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);
614		684
615	for (j = len; j--; )
616	{
617	unsigned int idx
618	= ((*buf & 0xc0) >> 2)
619	\| ((*buf & 0x18) >> 1)
620	\| (*buf & 0x03);
621
622	++tmphist[idx];
623	++buf;
624	}
625		685	{
626	for (j = 0; j < HISTSIZE; ++j)	686	STRLEN len;
627	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;
628		730
629	av_push (result, histsv);	731	av_push (result, histsv);
630	}	732	}
631		733
632	RETVAL = newRV_noinc ((SV *)result);	734	RETVAL = newRV_noinc ((SV *)result);
633	}	735	}
634	OUTPUT:	736	OUTPUT:
635	RETVAL	737	RETVAL
636		738
637

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Comparing CV/CV.xs (file contents): Revision 1.26 by root, Sun Aug 21 02:18:30 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 1.26 by root, Sun Aug 21 02:18:30 2005 UTC vs.
Revision 1.41 by root, Sat Mar 1 04:11:26 2008 UTC