[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 1.42 by root, Sun Sep 14 12:47:59 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
23	#define ELLIPSIS "\xe2\x80\xa6"	26	#define ELLIPSIS "\xe2\x80\xa6"
		27
		28	typedef char *octet_string;
24		29
25	struct jpg_err_mgr	30	struct jpg_err_mgr
26	{	31	{
27	struct jpeg_error_mgr err;	32	struct jpeg_error_mgr err;
28	jmp_buf setjmp_buffer;	33	jmp_buf setjmp_buffer;
…		…
65		70
66	*h &= 255;	71	*h &= 255;
67	}	72	}
68	}	73	}
69		74
		75	struct feature {
		76	float v1, v2, v3; // mean, square, cube
		77	int n;
		78	};
		79
		80	static void
		81	feature_init (struct feature *f)
		82	{
		83	f->v1 = 0.;
		84	f->v2 = 0.;
		85	f->v3 = 0.;
		86	f->n = 0;
		87	}
		88
		89	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		90	// elmex ist schuld.
		91	static void
		92	feature_update_pass_1 (struct feature *f, unsigned int v)
		93	{
		94	f->v1 += v;
		95	f->n += 1;
		96	}
		97
		98	static void
		99	feature_finish_pass_1 (struct feature *f)
		100	{
		101	if (f->n < 1)
		102	return;
		103
		104	f->v1 /= f->n;
		105	}
		106
		107	static void
		108	feature_update_pass_2 (struct feature *f, unsigned int v)
		109	{
		110	float d = v - f->v1;
		111
		112	f->v2 += d * d;
		113	f->v3 += d * d * d;
		114	}
		115
		116	static void
		117	feature_finish_pass_2 (struct feature *f)
		118	{
		119	if (f->n < 1)
		120	return;
		121
		122	f->v2 /= f->n;
		123	f->v3 /= f->n;
		124
		125	f->v1 /= 255.;
		126	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		127	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		128	}
		129
70	static guint32 a85_val;	130	static guint32 a85_val;
71	static guint a85_cnt;	131	static guint a85_cnt;
72	static guchar a85_buf[LINELENGTH], *a85_ptr;	132	static guchar a85_buf[LINELENGTH], *a85_ptr;
73		133
74	static void	134	static void
…		…
126		186
127	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	187	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128		188
129	PROTOTYPES: ENABLE	189	PROTOTYPES: ENABLE
130		190
		191	# missing function in perl. really :)
		192	int
		193	common_prefix_length (a, b)
		194	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		195	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		196	CODE:
		197	RETVAL = 0;
		198
		199	while (a == b && *a)
		200	{
		201	RETVAL += (*a & 0xc0) != 0x80;
		202	a++, b++;
		203	}
		204
		205	OUTPUT:
		206	RETVAL
		207
		208	const char *
		209	magic (octet_string path)
		210	CODE:
		211	{
		212	static magic_t cookie;
		213
		214	if (!cookie)
		215	{
		216	cookie = magic_open (MAGIC_NONE);
		217
		218	if (cookie)
		219	magic_load (cookie, 0);
		220	else
		221	XSRETURN_UNDEF;
		222	}
		223
		224	RETVAL = magic_file (cookie, path);
		225	}
		226	OUTPUT:
		227	RETVAL
		228
		229	const char *
		230	magic_mime (octet_string path)
		231	CODE:
		232	{
		233	static magic_t cookie;
		234
		235	if (!cookie)
		236	{
		237	cookie = magic_open (MAGIC_MIME);
		238
		239	if (cookie)
		240	magic_load (cookie, 0);
		241	else
		242	XSRETURN_UNDEF;
		243	}
		244
		245	RETVAL = magic_file (cookie, path);
		246	}
		247	OUTPUT:
		248	RETVAL
		249
131	# missing in Gtk2 perl module	250	# missing/broken in Gtk2 perl module
		251
		252	void
		253	gdk_window_clear_hints (GdkWindow *window)
		254	CODE:
		255	gdk_window_set_geometry_hints (window, 0, 0);
132		256
133	gboolean	257	gboolean
134	gdk_net_wm_supports (GdkAtom property)	258	gdk_net_wm_supports (GdkAtom property)
135	CODE:	259	CODE:
136	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	260	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
145	dealpha_expose (GdkPixbuf *pb)	269	dealpha_expose (GdkPixbuf *pb)
146	CODE:	270	CODE:
147	{	271	{
148	int w = gdk_pixbuf_get_width (pb);	272	int w = gdk_pixbuf_get_width (pb);
149	int h = gdk_pixbuf_get_height (pb);	273	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);	274	int bpp = gdk_pixbuf_get_n_channels (pb);
152	int x, y, i;	275	int x, y, i;
153	guchar src = gdk_pixbuf_get_pixels (pb), dst;	276	guchar src = gdk_pixbuf_get_pixels (pb), dst;
154	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	277	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
155		278
…		…
165	}	288	}
166	OUTPUT:	289	OUTPUT:
167	RETVAL	290	RETVAL
168		291
169	GdkPixbuf_noinc *	292	GdkPixbuf_noinc *
170	transpose (GdkPixbuf *pb)	293	rotate (GdkPixbuf *pb, int angle)
171	CODE:	294	CODE:
172	{	295	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
173	int w = gdk_pixbuf_get_width (pb);	296	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
174	int h = gdk_pixbuf_get_height (pb);	297	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
175	int bpp = gdk_pixbuf_get_n_channels (pb);	298	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
176	int x, y, i;	299	: 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:	300	OUTPUT:
215	RETVAL	301	RETVAL
216		302
217	GdkPixbuf_noinc *	303	GdkPixbuf_noinc *
218	load_jpeg (SV *path, int thumbnail=0)	304	load_jpeg (SV *path, int thumbnail=0)
…		…
222	struct jpg_err_mgr jerr;	308	struct jpg_err_mgr jerr;
223	guchar *data;	309	guchar *data;
224	int rs;	310	int rs;
225	FILE *fp;	311	FILE *fp;
226	volatile GdkPixbuf *pb = 0;	312	volatile GdkPixbuf *pb = 0;
227	gchar *filename;
228		313
229	RETVAL = 0;	314	RETVAL = 0;
230		315
231	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
232	fp = fopen (filename, "rb");	316	fp = fopen (SvPVbyte_nolen (path), "rb");
233	g_free (filename);
234		317
235	if (!fp)	318	if (!fp)
236	XSRETURN_UNDEF;	319	XSRETURN_UNDEF;
237		320
238	cinfo.err = jpeg_std_error (&jerr.err);	321	cinfo.err = jpeg_std_error (&jerr.err);
…		…
311	jpeg_destroy_decompress (&cinfo);	394	jpeg_destroy_decompress (&cinfo);
312	}	395	}
313	OUTPUT:	396	OUTPUT:
314	RETVAL	397	RETVAL
315		398
		399	void
		400	compare (GdkPixbuf a, GdkPixbuf b)
		401	PPCODE:
		402	{
		403	int w = gdk_pixbuf_get_width (a);
		404	int h = gdk_pixbuf_get_height (a);
		405	int sa = gdk_pixbuf_get_rowstride (a);
		406	int sb = gdk_pixbuf_get_rowstride (b);
		407
		408	guchar *pa = gdk_pixbuf_get_pixels (a);
		409	guchar *pb = gdk_pixbuf_get_pixels (b);
		410
		411	int x, y;
		412
		413	assert (w == gdk_pixbuf_get_width (b));
		414	assert (h == gdk_pixbuf_get_height (b));
		415
		416	assert (gdk_pixbuf_get_n_channels (a) == 3);
		417	assert (gdk_pixbuf_get_n_channels (b) == 3);
		418
		419	double diff = 0.;
		420	int peak = 0;
		421
		422	if (w && h)
		423	for (y = 0; y < h; y++)
		424	{
		425	guchar pa_ = pa + y sa;
		426	guchar pb_ = pb + y sb;
		427
		428	for (x = 0; x < w; x++)
		429	{
		430	int d;
		431
		432	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		433	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		434	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		435	}
		436	}
		437
		438	EXTEND (SP, 2);
		439	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		440	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		441	}
		442
316	#############################################################################	443	#############################################################################
317		444
318	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	445	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		446
		447	# currently only works for filenames (octet strings)
319		448
320	SV *	449	SV *
321	foldcase (SV *pathsv)	450	foldcase (SV *pathsv)
322	PROTOTYPE: $	451	PROTOTYPE: $
323	CODE:	452	CODE:
324	{	453	{
325	STRLEN plen;	454	STRLEN plen;
326	U8 path = (U8 )SvPVutf8 (pathsv, plen);	455	U8 path = (U8 )SvPV (pathsv, plen);
327	U8 *pend = path + plen;	456	U8 *pend = path + plen;
328	U8 dst [plen * 6 * 3], *dstp = dst;	457	U8 dst [plen * 6 * 3], *dstp = dst;
329		458
330	while (path < pend)	459	while (path < pend)
331	{	460	{
332	U8 ch = *path;	461	U8 ch = *path;
333		462
334	if (ch >= 'a' && ch <= 'z')	463	if (ch >= 'a' && ch <= 'z')
335	dstp++ = path++;	464	dstp++ = path++;
		465	else if (ch >= 'A' && ch <= 'Z')
		466	dstp++ = path++ + ('a' - 'A');
336	else if (ch >= '0' && ch <= '9')	467	else if (ch >= '0' && ch <= '9')
337	{	468	{
338	STRLEN el, nl = 0;	469	STRLEN el, nl = 0;
339	while (path >= '0' && path <= '9' && path < pend)	470	while (path >= '0' && path <= '9' && path < pend)
340	path++, nl++;	471	path++, nl++;
…		…
343	*dstp++ = '0';	474	*dstp++ = '0';
344		475
345	memcpy (dstp, path - nl, nl);	476	memcpy (dstp, path - nl, nl);
346	dstp += nl;	477	dstp += nl;
347	}	478	}
		479	else
		480	dstp++ = path++;
		481	#if 0
348	else	482	else
349	{	483	{
350	STRLEN cl;	484	STRLEN cl;
351	to_utf8_fold (path, dstp, &cl);	485	to_utf8_fold (path, dstp, &cl);
352	dstp += cl;	486	dstp += cl;
353	path += is_utf8_char (path);	487	path += is_utf8_char (path);
354	}	488	}
		489	#endif
355	}	490	}
356		491
357	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	492	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
358	}	493	}
359	OUTPUT:	494	OUTPUT:
…		…
384	}	519	}
385	}	520	}
386	OUTPUT:	521	OUTPUT:
387	RETVAL	522	RETVAL
388		523
		524	#############################################################################
		525
		526	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		527
		528	void
		529	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		530	CODE:
		531	{
		532	int w = gdk_pixbuf_get_width (pb);
		533	int h = gdk_pixbuf_get_height (pb);
		534	int x, y, i;
		535	guchar *dst;
		536	int bpp = gdk_pixbuf_get_n_channels (pb);
		537	guchar *src = gdk_pixbuf_get_pixels (pb);
		538	int sstr = gdk_pixbuf_get_rowstride (pb);
		539
		540	a85_init ();
		541
		542	for (y = 0; y < h; y++)
		543	for (x = 0; x < w; x++)
		544	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		545	a85_push (fp, src [x * bpp + y * sstr + i]);
		546
		547	a85_finish (fp);
		548	}
		549
		550	void
		551	dump_binary (PerlIO fp, GdkPixbuf pb)
		552	CODE:
		553	{
		554	int w = gdk_pixbuf_get_width (pb);
		555	int h = gdk_pixbuf_get_height (pb);
		556	int x, y, i;
		557	guchar *dst;
		558	int bpp = gdk_pixbuf_get_n_channels (pb);
		559	guchar *src = gdk_pixbuf_get_pixels (pb);
		560	int sstr = gdk_pixbuf_get_rowstride (pb);
		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	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		566	}
		567
		568	#############################################################################
		569
		570	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		571
389	SV *	572	SV *
390	pb_to_p7 (GdkPixbuf *pb)	573	pb_to_hv84 (GdkPixbuf *pb)
391	CODE:	574	CODE:
392	{	575	{
393	int w = gdk_pixbuf_get_width (pb);	576	int w = gdk_pixbuf_get_width (pb);
394	int h = gdk_pixbuf_get_height (pb);	577	int h = gdk_pixbuf_get_height (pb);
395	int x, y;	578	int x, y;
396	guchar *dst;	579	guchar *dst;
397	int bpp = gdk_pixbuf_get_n_channels (pb);	580	int bpp = gdk_pixbuf_get_n_channels (pb);
398	guchar *src = gdk_pixbuf_get_pixels (pb);	581	guchar *src = gdk_pixbuf_get_pixels (pb);
399	int sstr = gdk_pixbuf_get_rowstride (pb);	582	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		583
507	RETVAL = newSV (6 * 8 * 12 / 8);	584	RETVAL = newSV (6 * 8 * 12 / 8);
508	SvPOK_only (RETVAL);	585	SvPOK_only (RETVAL);
509	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	586	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
510		587
…		…
579	#############################################################################	656	#############################################################################
580		657
581	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	658	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
582		659
583	SV *	660	SV *
584	make_histograms (SV *ar)	661	extract_features (SV *ar)
585	CODE:	662	CODE:
586	{	663	{
587	int i;	664	int i;
588	AV av, result;	665	AV av, result;
589		666
590	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	667	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
591	croak ("Not an array ref as first argument to make_histogram");	668	croak ("Not an array ref as first argument to extract_features");
592		669
593	av = (AV *) SvRV (ar);	670	av = (AV *) SvRV (ar);
594	result = newAV ();	671	result = newAV ();
595		672
596	for (i = 0; i <= av_len (av); ++i)	673	for (i = 0; i <= av_len (av); ++i)
597	{	674	{
598	const int HISTSIZE = 64;
599
600	int j;
601	SV sv = av_fetch (av, i, 1);	675	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);	676	SV histsv = newSV (9 sizeof (float) + 1);
		677
609	SvPOK_on (histsv);	678	SvPOK_on (histsv);
610	SvCUR_set (histsv, HISTSIZE * sizeof (float));	679	SvCUR_set (histsv, 9 * sizeof (float));
611	hist = (float *)SvPVX (histsv);	680	float hist = (float )SvPVX (histsv);
612		681
613	Zero (tmphist, sizeof (tmphist), char);	682	struct feature f_h, f_s, f_v;
		683	feature_init (&f_h);
		684	feature_init (&f_s);
		685	feature_init (&f_v);
614		686
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		687	{
626	for (j = 0; j < HISTSIZE; ++j)	688	STRLEN len;
627	hist[j] = (float)tmphist[j] / (len + 1e-30);	689	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		690	while (len >= 3)
		691	{
		692	unsigned int r, g, b, h, s, v;
		693	r = buf++; g = buf++; b = *buf++;
		694	rgb_to_hsv (r, g, b, &h, &s, &v);
		695
		696	feature_update_pass_1 (&f_h, h);
		697	feature_update_pass_1 (&f_s, s);
		698	feature_update_pass_1 (&f_v, v);
		699
		700	len -= 3;
		701	}
		702
		703	feature_finish_pass_1 (&f_h);
		704	feature_finish_pass_1 (&f_s);
		705	feature_finish_pass_1 (&f_v);
		706	}
		707
		708	{
		709	STRLEN len;
		710	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		711	while (len >= 3)
		712	{
		713	unsigned int r, g, b, h, s, v;
		714	r = buf++; g = buf++; b = *buf++;
		715	rgb_to_hsv (r, g, b, &h, &s, &v);
		716
		717	feature_update_pass_2 (&f_h, h);
		718	feature_update_pass_2 (&f_s, s);
		719	feature_update_pass_2 (&f_v, v);
		720
		721	len -= 3;
		722	}
		723
		724	feature_finish_pass_2 (&f_h);
		725	feature_finish_pass_2 (&f_s);
		726	feature_finish_pass_2 (&f_v);
		727	}
		728
		729	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		730	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		731	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
628		732
629	av_push (result, histsv);	733	av_push (result, histsv);
630	}	734	}
631		735
632	RETVAL = newRV_noinc ((SV *)result);	736	RETVAL = newRV_noinc ((SV *)result);
633	}	737	}
634	OUTPUT:	738	OUTPUT:
635	RETVAL	739	RETVAL
636		740
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 1.42 by root, Sun Sep 14 12:47:59 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 1.42 by root, Sun Sep 14 12:47:59 2008 UTC