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

Comparing CV/CV.xs (file contents):
Revision 1.34 by root, Tue Mar 7 16:26:25 2006 UTC vs.
Revision 1.51 by root, Sat Dec 23 04:11:49 2017 UTC

…		…
9	#include <magic.h>	9	#include <magic.h>
10		10
11	#include <jpeglib.h>	11	#include <jpeglib.h>
12	#include <glib.h>	12	#include <glib.h>
13	#include <gtk/gtk.h>	13	#include <gtk/gtk.h>
		14	#include <gdk/gdkx.h>
14	#include <gdk-pixbuf/gdk-pixbuf.h>	15	#include <gdk-pixbuf/gdk-pixbuf.h>
15		16
16	#include <gperl.h>	17	#include <gperl.h>
17	#include <gtk2perl.h>	18	#include <gtk2perl.h>
18		19
		20	#include <assert.h>
		21
		22	#if WEBP
		23	#include <webp/decode.h>
		24	#endif
		25
		26	#include "perlmulticore.h"
		27
19	#define IW 80 /* MUST match Schnauzer.pm! */	28	#define IW 80 /* MUST match Schnauzer.pm! */
20	#define IH 60 /* MUST match Schnauzer.pm! */	29	#define IH 60 /* MUST match Schnauzer.pm! */
21		30
22	#define RAND (seed = (seed + 7141) * 54773 % 134456)	31	#define RAND (seed = (seed + 7141) * 54773 % 134456)
23		32
24	#define LINELENGTH 240	33	#define LINELENGTH 240
25		34
26	#define ELLIPSIS "\xe2\x80\xa6"	35	#define ELLIPSIS "\xe2\x80\xa6"
		36
		37	typedef char *octet_string;
		38
		39	static magic_t magic_cookie[2]; /* !mime, mime */
27		40
28	struct jpg_err_mgr	41	struct jpg_err_mgr
29	{	42	{
30	struct jpeg_error_mgr err;	43	struct jpeg_error_mgr err;
31	jmp_buf setjmp_buffer;	44	jmp_buf setjmp_buffer;
32	};	45	};
33		46
34	static void	47	static void
35	cv_error_exit (j_common_ptr cinfo)	48	cv_error_exit (j_common_ptr cinfo)
36	{	49	{
		50	cinfo->err->output_message (cinfo);
37	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	51	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
38	}	52	}
39		53
40	static void	54	static void
41	cv_error_output (j_common_ptr cinfo)	55	cv_error_output (j_common_ptr cinfo)
42	{	56	{
		57	char msg[JMSG_LENGTH_MAX];
		58
		59	cinfo->err->format_message (cinfo, msg);
		60
		61	fprintf (stderr, "JPEG decoding error: %s\n", msg);
43	return;	62	return;
44	}	63	}
45		64
46	static void	65	static void
47	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,	66	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
…		…
68		87
69	*h &= 255;	88	*h &= 255;
70	}	89	}
71	}	90	}
72		91
		92	struct feature {
		93	float v1, v2, v3; // mean, square, cube
		94	int n;
		95	};
		96
		97	static void
		98	feature_init (struct feature *f)
		99	{
		100	f->v1 = 0.;
		101	f->v2 = 0.;
		102	f->v3 = 0.;
		103	f->n = 0;
		104	}
		105
		106	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		107	// elmex ist schuld.
		108	static void
		109	feature_update_pass_1 (struct feature *f, unsigned int v)
		110	{
		111	f->v1 += v;
		112	f->n += 1;
		113	}
		114
		115	static void
		116	feature_finish_pass_1 (struct feature *f)
		117	{
		118	if (f->n < 1)
		119	return;
		120
		121	f->v1 /= f->n;
		122	}
		123
		124	static void
		125	feature_update_pass_2 (struct feature *f, unsigned int v)
		126	{
		127	float d = v - f->v1;
		128
		129	f->v2 += d * d;
		130	f->v3 += d * d * d;
		131	}
		132
		133	static void
		134	feature_finish_pass_2 (struct feature *f)
		135	{
		136	if (f->n < 1)
		137	return;
		138
		139	f->v2 /= f->n;
		140	f->v3 /= f->n;
		141
		142	f->v1 /= 255.;
		143	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		144	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		145	}
		146
73	static guint32 a85_val;	147	static guint32 a85_val;
74	static guint a85_cnt;	148	static guint a85_cnt;
75	static guchar a85_buf[LINELENGTH], *a85_ptr;	149	static guchar a85_buf[LINELENGTH], *a85_ptr;
76		150
77	static void	151	static void
…		…
89	if (!--a85_cnt)	163	if (!--a85_cnt)
90	{	164	{
91	a85_cnt = 4;	165	a85_cnt = 4;
92	if (a85_val)	166	if (a85_val)
93	{	167	{
94	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	168	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
95	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	169	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
96	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	170	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
97	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
98	a85_ptr[0] = (a85_val ) + 33;	172	a85_ptr[0] = (a85_val ) + 33;
99		173
100	a85_ptr += 5;	174	a85_ptr += 5;
101	}	175	}
…		…
147		221
148	OUTPUT:	222	OUTPUT:
149	RETVAL	223	RETVAL
150		224
151	const char *	225	const char *
152	magic (const char *path)	226	magic (SV *path_or_data)
		227	ALIAS:
		228	magic = 0
		229	magic_mime = 1
		230	magic_buffer = 2
		231	magic_buffer_mime = 3
153	CODE:	232	CODE:
154	{	233	{
155	static magic_t cookie;	234	STRLEN len;
		235	char *data = SvPVbyte (path_or_data, len);
156		236
		237	perlinterp_release ();
		238
157	if (!cookie)	239	if (!magic_cookie[0])
		240	{
		241	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		242	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME);
158	{	243	}
159	cookie = magic_open (MAGIC_NONE);
160		244
161	if (cookie)	245	RETVAL = ix & 2
162	magic_load (cookie, 0);	246	? magic_buffer (magic_cookie[ix], data, len)
163	else	247	: magic_file (magic_cookie[ix], data);
164	XSRETURN_UNDEF;
165	}
166		248
167	RETVAL = magic_file (cookie, path);	249	perlinterp_acquire ();
168	}	250	}
169	OUTPUT:	251	OUTPUT:
170	RETVAL	252	RETVAL
171		253
172	const char *
173	magic_mime (const char *path)
174	CODE:
175	{
176	static magic_t cookie;
177
178	if (!cookie)
179	{
180	cookie = magic_open (MAGIC_MIME);
181
182	if (cookie)
183	magic_load (cookie, 0);
184	else
185	XSRETURN_UNDEF;
186	}
187
188	RETVAL = magic_file (cookie, path);
189	}
190	OUTPUT:
191	RETVAL
192
193	# missing in Gtk2 perl module	254	# missing/broken in Gtk2 perl module
		255
		256	void
		257	gdk_window_clear_hints (GdkWindow *window)
		258	CODE:
		259	gdk_window_set_geometry_hints (window, 0, 0);
194		260
195	gboolean	261	gboolean
196	gdk_net_wm_supports (GdkAtom property)	262	gdk_net_wm_supports (GdkAtom property)
197	CODE:	263	CODE:
198	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	264	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
204	RETVAL	270	RETVAL
205		271
206	GdkPixbuf_noinc *	272	GdkPixbuf_noinc *
207	dealpha_expose (GdkPixbuf *pb)	273	dealpha_expose (GdkPixbuf *pb)
208	CODE:	274	CODE:
		275	perlinterp_release ();
209	{	276	{
210	int w = gdk_pixbuf_get_width (pb);	277	int w = gdk_pixbuf_get_width (pb);
211	int h = gdk_pixbuf_get_height (pb);	278	int h = gdk_pixbuf_get_height (pb);
212	int bpp = gdk_pixbuf_get_n_channels (pb);	279	int bpp = gdk_pixbuf_get_n_channels (pb);
213	int x, y, i;	280	int x, y, i;
…		…
222	for (x = 0; x < w; x++)	289	for (x = 0; x < w; x++)
223	for (y = 0; y < h; y++)	290	for (y = 0; y < h; y++)
224	for (i = 0; i < 3; i++)	291	for (i = 0; i < 3; i++)
225	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];	292	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
226	}	293	}
		294	perlinterp_acquire ();
227	OUTPUT:	295	OUTPUT:
228	RETVAL	296	RETVAL
229		297
230	GdkPixbuf_noinc *	298	GdkPixbuf_noinc *
231	rotate (GdkPixbuf *pb, int angle)	299	rotate (GdkPixbuf *pb, int angle)
232	CODE:	300	CODE:
		301	perlinterp_release ();
		302	if (angle < 0)
		303	angle += 360;
233	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE	304	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
234	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE	305	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
235	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN	306	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
236	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE	307	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
237	: angle);	308	: angle);
		309	perlinterp_acquire ();
238	OUTPUT:	310	OUTPUT:
239	RETVAL	311	RETVAL
240		312
241	GdkPixbuf_noinc *	313	GdkPixbuf_noinc *
242	load_jpeg (SV *path, int thumbnail=0)	314	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		315	CODE:
		316	{
		317	#if WEBP
		318	guchar *data;
		319	STRLEN data_size;
		320	int alpha;
		321	WebPDecoderConfig config;
		322	int inw, inh;
		323
		324	data = SvPVbyte (image_data, data_size);
		325
		326	perlinterp_release ();
		327
		328	RETVAL = 0;
		329
		330	if (!WebPInitDecoderConfig (&config))
		331	goto err;
		332
		333	config.options.use_threads = 1;
		334
		335	if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK)
		336	goto err;
		337
		338	inw = config.input.width;
		339	inh = config.input.height;
		340
		341	if (thumbnail)
		342	{
		343	if (inw * ih > inh * iw)
		344	ih = (iw * inh + inw - 1) / inw;
		345	else
		346	iw = (ih * inw + inh - 1) / inh;
		347
		348	config.options.bypass_filtering = 1;
		349	config.options.no_fancy_upsampling = 1;
		350
		351	config.options.use_scaling = 1;
		352	config.options.scaled_width = iw;
		353	config.options.scaled_height = ih;
		354	}
		355	else
		356	{
		357	iw = inw;
		358	ih = inh;
		359	}
		360
		361	alpha = config.input.has_alpha;
		362
		363	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih);
		364	if (!RETVAL)
		365	goto err;
		366
		367	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		368	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		369	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		370	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		371	config.output.is_external_memory = 1;
		372
		373	if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK)
		374	{
		375	g_object_unref (RETVAL);
		376	RETVAL = 0;
		377	goto err;
		378	}
		379
		380	err:
		381	perlinterp_acquire ();
		382	#else
		383	croak ("load_webp: webp not enabled at compile time");
		384	#endif
		385	}
		386	OUTPUT:
		387	RETVAL
		388
		389	GdkPixbuf_noinc *
		390	load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0)
243	CODE:	391	CODE:
244	{	392	{
245	struct jpeg_decompress_struct cinfo;	393	struct jpeg_decompress_struct cinfo;
246	struct jpg_err_mgr jerr;	394	struct jpg_err_mgr jerr;
247	guchar *data;	395	guchar *data;
…		…
254	fp = fopen (SvPVbyte_nolen (path), "rb");	402	fp = fopen (SvPVbyte_nolen (path), "rb");
255		403
256	if (!fp)	404	if (!fp)
257	XSRETURN_UNDEF;	405	XSRETURN_UNDEF;
258		406
		407	perlinterp_release ();
		408
259	cinfo.err = jpeg_std_error (&jerr.err);	409	cinfo.err = jpeg_std_error (&jerr.err);
260		410
261	jerr.err.error_exit = cv_error_exit;	411	jerr.err.error_exit = cv_error_exit;
262	jerr.err.output_message = cv_error_output;	412	jerr.err.output_message = cv_error_output;
263		413
…		…
267	jpeg_destroy_decompress (&cinfo);	417	jpeg_destroy_decompress (&cinfo);
268		418
269	if (pb)	419	if (pb)
270	g_object_unref ((gpointer)pb);	420	g_object_unref ((gpointer)pb);
271		421
		422	perlinterp_acquire ();
272	XSRETURN_UNDEF;	423	XSRETURN_UNDEF;
273	}	424	}
274		425
275	jpeg_create_decompress (&cinfo);	426	jpeg_create_decompress (&cinfo);
276		427
…		…
292	{	443	{
293	cinfo.dct_method = JDCT_FASTEST;	444	cinfo.dct_method = JDCT_FASTEST;
294	cinfo.do_fancy_upsampling = FALSE;	445	cinfo.do_fancy_upsampling = FALSE;
295		446
296	while (cinfo.scale_denom < 8	447	while (cinfo.scale_denom < 8
297	&& cinfo.output_width >= IW*4	448	&& cinfo.output_width >= iw*4
298	&& cinfo.output_height >= IH*4)	449	&& cinfo.output_height >= ih*4)
299	{	450	{
300	cinfo.scale_denom <<= 1;	451	cinfo.scale_denom <<= 1;
301	jpeg_calc_output_dimensions (&cinfo);	452	jpeg_calc_output_dimensions (&cinfo);
302	}	453	}
303	}	454	}
304		455
		456	if (cinfo.output_components != 3)
		457	longjmp (jerr.setjmp_buffer, 3);
		458
		459	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		460	{
		461	cinfo.out_color_space = JCS_CMYK;
		462	cinfo.output_components = 4;
		463	}
		464
305	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	465	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
306	if (!RETVAL)	466	if (!RETVAL)
307	longjmp (jerr.setjmp_buffer, 2);	467	longjmp (jerr.setjmp_buffer, 2);
308		468
309	data = gdk_pixbuf_get_pixels (RETVAL);	469	data = gdk_pixbuf_get_pixels (RETVAL);
310	rs = gdk_pixbuf_get_rowstride (RETVAL);	470	rs = gdk_pixbuf_get_rowstride (RETVAL);
311
312	if (cinfo.output_components != 3)
313	longjmp (jerr.setjmp_buffer, 3);
314		471
315	jpeg_start_decompress (&cinfo);	472	jpeg_start_decompress (&cinfo);
316		473
317	while (cinfo.output_scanline < cinfo.output_height)	474	while (cinfo.output_scanline < cinfo.output_height)
318	{	475	{
…		…
325	rp [3] = (guchar *)rp [2] + rs;	482	rp [3] = (guchar *)rp [2] + rs;
326		483
327	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	484	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
328	}	485	}
329		486
		487	if (cinfo.out_color_space == JCS_CMYK)
		488	{
		489	guchar end = data + cinfo.output_height rs;
		490
		491	while (data < end)
		492	{
		493	U32 c = data [0];
		494	U32 m = data [1];
		495	U32 y = data [2];
		496	U32 k = data [3];
		497
		498	if (0)
		499	if (cinfo.Adobe_transform == 2)
		500	{
		501	c ^= 0xff;
		502	m ^= 0xff;
		503	y ^= 0xff;
		504	k ^= 0xff;
		505	}
		506
		507	data [0] = (c * k + 0x80) / 0xff;
		508	data [1] = (m * k + 0x80) / 0xff;
		509	data [2] = (y * k + 0x80) / 0xff;
		510	data [3] = 0xff;
		511
		512	data += 4;
		513	}
		514	}
		515
330	jpeg_finish_decompress (&cinfo);	516	jpeg_finish_decompress (&cinfo);
331	fclose (fp);	517	fclose (fp);
332	jpeg_destroy_decompress (&cinfo);	518	jpeg_destroy_decompress (&cinfo);
		519	perlinterp_acquire ();
333	}	520	}
334	OUTPUT:	521	OUTPUT:
335	RETVAL	522	RETVAL
336		523
337	void	524	void
338	compare (GdkPixbuf a, GdkPixbuf b)	525	compare (GdkPixbuf a, GdkPixbuf b)
339	PPCODE:	526	PPCODE:
		527	perlinterp_release ();
340	{	528	{
341	int w = gdk_pixbuf_get_width (a);	529	int w = gdk_pixbuf_get_width (a);
342	int h = gdk_pixbuf_get_height (a);	530	int h = gdk_pixbuf_get_height (a);
		531
343	int sa = gdk_pixbuf_get_rowstride (a);	532	int sa = gdk_pixbuf_get_rowstride (a);
344	int sb = gdk_pixbuf_get_rowstride (b);	533	int sb = gdk_pixbuf_get_rowstride (b);
345		534
346	guchar *pa = gdk_pixbuf_get_pixels (a);	535	guchar *pa = gdk_pixbuf_get_pixels (a);
347	guchar *pb = gdk_pixbuf_get_pixels (b);	536	guchar *pb = gdk_pixbuf_get_pixels (b);
…		…
355	assert (gdk_pixbuf_get_n_channels (b) == 3);	544	assert (gdk_pixbuf_get_n_channels (b) == 3);
356		545
357	double diff = 0.;	546	double diff = 0.;
358	int peak = 0;	547	int peak = 0;
359		548
360	if (x && y)	549	if (w && h)
361	for (y = 0; y < h; y++)	550	for (y = 0; y < h; y++)
362	{	551	{
363	guchar pa_ = pa + y sa;	552	guchar pa_ = pa + y sa;
364	guchar pb_ = pb + y sb;	553	guchar pb_ = pb + y sb;
365		554
…		…
371	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	560	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
372	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	561	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
373	}	562	}
374	}	563	}
375		564
		565	perlinterp_acquire ();
		566
376	EXTEND (SP, 2);	567	EXTEND (SP, 2);
377	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));	568	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
378	PUSHs (sv_2mortal (newSVnv (peak / 255.)));	569	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
379	}	570	}
380		571
381	#############################################################################	572	#############################################################################
382		573
383	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	574	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
384		575
		576	# currently only works for filenames (octet strings)
		577
385	SV *	578	SV *
386	foldcase (SV *pathsv)	579	foldcase (SV *pathsv)
387	PROTOTYPE: $	580	PROTOTYPE: $
388	CODE:	581	CODE:
389	{	582	{
390	STRLEN plen;	583	STRLEN plen;
391	U8 path = (U8 )SvPVutf8 (pathsv, plen);	584	U8 path = (U8 )SvPV (pathsv, plen);
392	U8 *pend = path + plen;	585	U8 *pend = path + plen;
393	U8 dst [plen * 6 * 3], *dstp = dst;	586	U8 dst [plen * 6 * 3], *dstp = dst;
394		587
395	while (path < pend)	588	while (path < pend)
396	{	589	{
397	U8 ch = *path;	590	U8 ch = *path;
398		591
399	if (ch >= 'a' && ch <= 'z')	592	if (ch >= 'a' && ch <= 'z')
400	dstp++ = path++;	593	dstp++ = path++;
		594	else if (ch >= 'A' && ch <= 'Z')
		595	dstp++ = path++ + ('a' - 'A');
401	else if (ch >= '0' && ch <= '9')	596	else if (ch >= '0' && ch <= '9')
402	{	597	{
403	STRLEN el, nl = 0;	598	STRLEN el, nl = 0;
404	while (path >= '0' && path <= '9' && path < pend)	599	while (path >= '0' && path <= '9' && path < pend)
405	path++, nl++;	600	path++, nl++;
…		…
408	*dstp++ = '0';	603	*dstp++ = '0';
409		604
410	memcpy (dstp, path - nl, nl);	605	memcpy (dstp, path - nl, nl);
411	dstp += nl;	606	dstp += nl;
412	}	607	}
		608	else
		609	dstp++ = path++;
		610	#if 0
413	else	611	else
414	{	612	{
415	STRLEN cl;	613	STRLEN cl;
416	to_utf8_fold (path, dstp, &cl);	614	to_utf8_fold (path, dstp, &cl);
417	dstp += cl;	615	dstp += cl;
418	path += is_utf8_char (path);	616	path += is_utf8_char (path);
419	}	617	}
		618	#endif
420	}	619	}
421		620
422	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	621	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
423	}	622	}
424	OUTPUT:	623	OUTPUT:
…		…
586	#############################################################################	785	#############################################################################
587		786
588	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	787	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
589		788
590	SV *	789	SV *
591	make_histograms (SV *ar)	790	extract_features (SV *ar)
592	CODE:	791	CODE:
593	{	792	{
594	int i;	793	int i;
595	AV av, result;	794	AV av, result;
596		795
597	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	796	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
598	croak ("Not an array ref as first argument to make_histogram");	797	croak ("Not an array ref as first argument to extract_features");
599		798
600	av = (AV *) SvRV (ar);	799	av = (AV *) SvRV (ar);
601	result = newAV ();	800	result = newAV ();
602		801
603	for (i = 0; i <= av_len (av); ++i)	802	for (i = 0; i <= av_len (av); ++i)
604	{	803	{
605	const int HISTSIZE = 64;
606
607	int j;
608	SV sv = av_fetch (av, i, 1);	804	SV sv = av_fetch (av, i, 1);
609	STRLEN len;
610	char *buf = SvPVbyte (sv, len);
611
612	int tmphist[HISTSIZE];
613	float *hist;
614
615	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	805	SV histsv = newSV (9 sizeof (float) + 1);
		806
616	SvPOK_on (histsv);	807	SvPOK_on (histsv);
617	SvCUR_set (histsv, HISTSIZE * sizeof (float));	808	SvCUR_set (histsv, 9 * sizeof (float));
618	hist = (float *)SvPVX (histsv);	809	float hist = (float )SvPVX (histsv);
619		810
620	Zero (tmphist, sizeof (tmphist), char);	811	struct feature f_h, f_s, f_v;
		812	feature_init (&f_h);
		813	feature_init (&f_s);
		814	feature_init (&f_v);
621		815
622	for (j = len; j--; )
623	{
624	unsigned int idx
625	= ((*buf & 0xc0) >> 2)
626	\| ((*buf & 0x18) >> 1)
627	\| (*buf & 0x03);
628
629	++tmphist[idx];
630	++buf;
631	}
632		816	{
633	for (j = 0; j < HISTSIZE; ++j)	817	STRLEN len;
634	hist[j] = (float)tmphist[j] / (len + 1e-30);	818	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		819	while (len >= 3)
		820	{
		821	unsigned int r, g, b, h, s, v;
		822	r = buf++; g = buf++; b = *buf++;
		823	rgb_to_hsv (r, g, b, &h, &s, &v);
		824
		825	feature_update_pass_1 (&f_h, h);
		826	feature_update_pass_1 (&f_s, s);
		827	feature_update_pass_1 (&f_v, v);
		828
		829	len -= 3;
		830	}
		831
		832	feature_finish_pass_1 (&f_h);
		833	feature_finish_pass_1 (&f_s);
		834	feature_finish_pass_1 (&f_v);
		835	}
		836
		837	{
		838	STRLEN len;
		839	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		840	while (len >= 3)
		841	{
		842	unsigned int r, g, b, h, s, v;
		843	r = buf++; g = buf++; b = *buf++;
		844	rgb_to_hsv (r, g, b, &h, &s, &v);
		845
		846	feature_update_pass_2 (&f_h, h);
		847	feature_update_pass_2 (&f_s, s);
		848	feature_update_pass_2 (&f_v, v);
		849
		850	len -= 3;
		851	}
		852
		853	feature_finish_pass_2 (&f_h);
		854	feature_finish_pass_2 (&f_s);
		855	feature_finish_pass_2 (&f_v);
		856	}
		857
		858	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		859	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		860	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
635		861
636	av_push (result, histsv);	862	av_push (result, histsv);
637	}	863	}
638		864
639	RETVAL = newRV_noinc ((SV *)result);	865	RETVAL = newRV_noinc ((SV *)result);
640	}	866	}
641	OUTPUT:	867	OUTPUT:
642	RETVAL	868	RETVAL
643		869
644

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Comparing CV/CV.xs (file contents): Revision 1.34 by root, Tue Mar 7 16:26:25 2006 UTC vs. Revision 1.51 by root, Sat Dec 23 04:11:49 2017 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.34 by root, Tue Mar 7 16:26:25 2006 UTC vs.
Revision 1.51 by root, Sat Dec 23 04:11:49 2017 UTC