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

Comparing CV/CV.xs (file contents):
Revision 1.33 by root, Fri Feb 17 08:48:06 2006 UTC vs.
Revision 1.52 by root, Sat Dec 23 04:25:50 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
157	if (!cookie)	237	if (!magic_cookie[0])
		238	{
		239	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		240	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		241	magic_load (magic_cookie[0], 0);
		242	magic_load (magic_cookie[1], 0);
158	{	243	}
159	cookie = magic_open (MAGIC_NONE);
160		244
161	if (cookie)	245	perlinterp_release ();
162	magic_load (cookie, 0);
163	else
164	XSRETURN_UNDEF;
165	}
166		246
167	RETVAL = magic_file (cookie, path);	247	RETVAL = ix & 2
		248	? magic_buffer (magic_cookie[ix & 1], data, len)
		249	: magic_file (magic_cookie[ix & 1], data);
		250
		251	perlinterp_acquire ();
168	}	252	}
169	OUTPUT:	253	OUTPUT:
170	RETVAL	254	RETVAL
171		255
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	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);
194		262
195	gboolean	263	gboolean
196	gdk_net_wm_supports (GdkAtom property)	264	gdk_net_wm_supports (GdkAtom property)
197	CODE:	265	CODE:
198	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	266	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
204	RETVAL	272	RETVAL
205		273
206	GdkPixbuf_noinc *	274	GdkPixbuf_noinc *
207	dealpha_expose (GdkPixbuf *pb)	275	dealpha_expose (GdkPixbuf *pb)
208	CODE:	276	CODE:
		277	perlinterp_release ();
209	{	278	{
210	int w = gdk_pixbuf_get_width (pb);	279	int w = gdk_pixbuf_get_width (pb);
211	int h = gdk_pixbuf_get_height (pb);	280	int h = gdk_pixbuf_get_height (pb);
212	int bpp = gdk_pixbuf_get_n_channels (pb);	281	int bpp = gdk_pixbuf_get_n_channels (pb);
213	int x, y, i;	282	int x, y, i;
…		…
222	for (x = 0; x < w; x++)	291	for (x = 0; x < w; x++)
223	for (y = 0; y < h; y++)	292	for (y = 0; y < h; y++)
224	for (i = 0; i < 3; i++)	293	for (i = 0; i < 3; i++)
225	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];	294	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
226	}	295	}
		296	perlinterp_acquire ();
227	OUTPUT:	297	OUTPUT:
228	RETVAL	298	RETVAL
229		299
230	GdkPixbuf_noinc *	300	GdkPixbuf_noinc *
231	rotate (GdkPixbuf *pb, int angle)	301	rotate (GdkPixbuf *pb, int angle)
232	CODE:	302	CODE:
		303	perlinterp_release ();
		304	if (angle < 0)
		305	angle += 360;
233	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE	306	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
234	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE	307	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
235	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN	308	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
236	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE	309	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
237	: angle);	310	: angle);
		311	perlinterp_acquire ();
238	OUTPUT:	312	OUTPUT:
239	RETVAL	313	RETVAL
240		314
241	GdkPixbuf_noinc *	315	GdkPixbuf_noinc *
242	load_jpeg (SV *path, int thumbnail=0)	316	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		317	CODE:
		318	{
		319	#if WEBP
		320	guchar *data;
		321	STRLEN data_size;
		322	int alpha;
		323	WebPDecoderConfig config;
		324	int inw, inh;
		325
		326	data = SvPVbyte (image_data, data_size);
		327
		328	perlinterp_release ();
		329
		330	RETVAL = 0;
		331
		332	if (!WebPInitDecoderConfig (&config))
		333	goto err;
		334
		335	config.options.use_threads = 1;
		336
		337	if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK)
		338	goto err;
		339
		340	inw = config.input.width;
		341	inh = config.input.height;
		342
		343	if (thumbnail)
		344	{
		345	if (inw * ih > inh * iw)
		346	ih = (iw * inh + inw - 1) / inw;
		347	else
		348	iw = (ih * inw + inh - 1) / inh;
		349
		350	config.options.bypass_filtering = 1;
		351	config.options.no_fancy_upsampling = 1;
		352
		353	config.options.use_scaling = 1;
		354	config.options.scaled_width = iw;
		355	config.options.scaled_height = ih;
		356	}
		357	else
		358	{
		359	iw = inw;
		360	ih = inh;
		361	}
		362
		363	alpha = config.input.has_alpha;
		364
		365	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih);
		366	if (!RETVAL)
		367	goto err;
		368
		369	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		370	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		371	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		372	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		373	config.output.is_external_memory = 1;
		374
		375	if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK)
		376	{
		377	g_object_unref (RETVAL);
		378	RETVAL = 0;
		379	goto err;
		380	}
		381
		382	err:
		383	perlinterp_acquire ();
		384	#else
		385	croak ("load_webp: webp not enabled at compile time");
		386	#endif
		387	}
		388	OUTPUT:
		389	RETVAL
		390
		391	GdkPixbuf_noinc *
		392	load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0)
243	CODE:	393	CODE:
244	{	394	{
245	struct jpeg_decompress_struct cinfo;	395	struct jpeg_decompress_struct cinfo;
246	struct jpg_err_mgr jerr;	396	struct jpg_err_mgr jerr;
247	guchar *data;	397	guchar *data;
…		…
254	fp = fopen (SvPVbyte_nolen (path), "rb");	404	fp = fopen (SvPVbyte_nolen (path), "rb");
255		405
256	if (!fp)	406	if (!fp)
257	XSRETURN_UNDEF;	407	XSRETURN_UNDEF;
258		408
		409	perlinterp_release ();
		410
259	cinfo.err = jpeg_std_error (&jerr.err);	411	cinfo.err = jpeg_std_error (&jerr.err);
260		412
261	jerr.err.error_exit = cv_error_exit;	413	jerr.err.error_exit = cv_error_exit;
262	jerr.err.output_message = cv_error_output;	414	jerr.err.output_message = cv_error_output;
263		415
…		…
267	jpeg_destroy_decompress (&cinfo);	419	jpeg_destroy_decompress (&cinfo);
268		420
269	if (pb)	421	if (pb)
270	g_object_unref ((gpointer)pb);	422	g_object_unref ((gpointer)pb);
271		423
		424	perlinterp_acquire ();
272	XSRETURN_UNDEF;	425	XSRETURN_UNDEF;
273	}	426	}
274		427
275	jpeg_create_decompress (&cinfo);	428	jpeg_create_decompress (&cinfo);
276		429
…		…
292	{	445	{
293	cinfo.dct_method = JDCT_FASTEST;	446	cinfo.dct_method = JDCT_FASTEST;
294	cinfo.do_fancy_upsampling = FALSE;	447	cinfo.do_fancy_upsampling = FALSE;
295		448
296	while (cinfo.scale_denom < 8	449	while (cinfo.scale_denom < 8
297	&& cinfo.output_width >= IW*4	450	&& cinfo.output_width >= iw*4
298	&& cinfo.output_height >= IH*4)	451	&& cinfo.output_height >= ih*4)
299	{	452	{
300	cinfo.scale_denom <<= 1;	453	cinfo.scale_denom <<= 1;
301	jpeg_calc_output_dimensions (&cinfo);	454	jpeg_calc_output_dimensions (&cinfo);
302	}	455	}
303	}	456	}
304		457
		458	if (cinfo.output_components != 3)
		459	longjmp (jerr.setjmp_buffer, 3);
		460
		461	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		462	{
		463	cinfo.out_color_space = JCS_CMYK;
		464	cinfo.output_components = 4;
		465	}
		466
305	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	467	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
306	if (!RETVAL)	468	if (!RETVAL)
307	longjmp (jerr.setjmp_buffer, 2);	469	longjmp (jerr.setjmp_buffer, 2);
308		470
309	data = gdk_pixbuf_get_pixels (RETVAL);	471	data = gdk_pixbuf_get_pixels (RETVAL);
310	rs = gdk_pixbuf_get_rowstride (RETVAL);	472	rs = gdk_pixbuf_get_rowstride (RETVAL);
311
312	if (cinfo.output_components != 3)
313	longjmp (jerr.setjmp_buffer, 3);
314		473
315	jpeg_start_decompress (&cinfo);	474	jpeg_start_decompress (&cinfo);
316		475
317	while (cinfo.output_scanline < cinfo.output_height)	476	while (cinfo.output_scanline < cinfo.output_height)
318	{	477	{
…		…
325	rp [3] = (guchar *)rp [2] + rs;	484	rp [3] = (guchar *)rp [2] + rs;
326		485
327	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	486	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
328	}	487	}
329		488
		489	if (cinfo.out_color_space == JCS_CMYK)
		490	{
		491	guchar end = data + cinfo.output_height rs;
		492
		493	while (data < end)
		494	{
		495	U32 c = data [0];
		496	U32 m = data [1];
		497	U32 y = data [2];
		498	U32 k = data [3];
		499
		500	if (0)
		501	if (cinfo.Adobe_transform == 2)
		502	{
		503	c ^= 0xff;
		504	m ^= 0xff;
		505	y ^= 0xff;
		506	k ^= 0xff;
		507	}
		508
		509	data [0] = (c * k + 0x80) / 0xff;
		510	data [1] = (m * k + 0x80) / 0xff;
		511	data [2] = (y * k + 0x80) / 0xff;
		512	data [3] = 0xff;
		513
		514	data += 4;
		515	}
		516	}
		517
330	jpeg_finish_decompress (&cinfo);	518	jpeg_finish_decompress (&cinfo);
331	fclose (fp);	519	fclose (fp);
332	jpeg_destroy_decompress (&cinfo);	520	jpeg_destroy_decompress (&cinfo);
		521	perlinterp_acquire ();
333	}	522	}
334	OUTPUT:	523	OUTPUT:
335	RETVAL	524	RETVAL
336		525
337	void	526	void
338	compare (GdkPixbuf a, GdkPixbuf b)	527	compare (GdkPixbuf a, GdkPixbuf b)
339	PPCODE:	528	PPCODE:
		529	perlinterp_release ();
340	{	530	{
341	int w = gdk_pixbuf_get_width (a);	531	int w = gdk_pixbuf_get_width (a);
342	int h = gdk_pixbuf_get_height (a);	532	int h = gdk_pixbuf_get_height (a);
		533
343	int sa = gdk_pixbuf_get_rowstride (a);	534	int sa = gdk_pixbuf_get_rowstride (a);
344	int sb = gdk_pixbuf_get_rowstride (b);	535	int sb = gdk_pixbuf_get_rowstride (b);
345		536
346	guchar *pa = gdk_pixbuf_get_pixels (a);	537	guchar *pa = gdk_pixbuf_get_pixels (a);
347	guchar *pb = gdk_pixbuf_get_pixels (b);	538	guchar *pb = gdk_pixbuf_get_pixels (b);
…		…
355	assert (gdk_pixbuf_get_n_channels (b) == 3);	546	assert (gdk_pixbuf_get_n_channels (b) == 3);
356		547
357	double diff = 0.;	548	double diff = 0.;
358	int peak = 0;	549	int peak = 0;
359		550
		551	if (w && h)
360	for (y = 0; y < h; y++)	552	for (y = 0; y < h; y++)
361	{	553	{
362	guchar pa_ = pa + y sa;	554	guchar pa_ = pa + y sa;
363	guchar pb_ = pb + y sb;	555	guchar pb_ = pb + y sb;
364		556
365	for (x = 0; x < w; x ++)	557	for (x = 0; x < w; x++)
366	{	558	{
367	int d;	559	int d;
368		560
369	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));
370	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	562	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
371	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	563	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
372	}	564	}
373	}	565	}
		566
		567	perlinterp_acquire ();
374		568
375	EXTEND (SP, 2);	569	EXTEND (SP, 2);
376	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));	570	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
377	PUSHs (sv_2mortal (newSVnv (peak / 255.)));	571	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
378	}	572	}
379		573
380	#############################################################################	574	#############################################################################
381		575
382	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	576	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
383		577
		578	# currently only works for filenames (octet strings)
		579
384	SV *	580	SV *
385	foldcase (SV *pathsv)	581	foldcase (SV *pathsv)
386	PROTOTYPE: $	582	PROTOTYPE: $
387	CODE:	583	CODE:
388	{	584	{
389	STRLEN plen;	585	STRLEN plen;
390	U8 path = (U8 )SvPVutf8 (pathsv, plen);	586	U8 path = (U8 )SvPV (pathsv, plen);
391	U8 *pend = path + plen;	587	U8 *pend = path + plen;
392	U8 dst [plen * 6 * 3], *dstp = dst;	588	U8 dst [plen * 6 * 3], *dstp = dst;
393		589
394	while (path < pend)	590	while (path < pend)
395	{	591	{
396	U8 ch = *path;	592	U8 ch = *path;
397		593
398	if (ch >= 'a' && ch <= 'z')	594	if (ch >= 'a' && ch <= 'z')
399	dstp++ = path++;	595	dstp++ = path++;
		596	else if (ch >= 'A' && ch <= 'Z')
		597	dstp++ = path++ + ('a' - 'A');
400	else if (ch >= '0' && ch <= '9')	598	else if (ch >= '0' && ch <= '9')
401	{	599	{
402	STRLEN el, nl = 0;	600	STRLEN el, nl = 0;
403	while (path >= '0' && path <= '9' && path < pend)	601	while (path >= '0' && path <= '9' && path < pend)
404	path++, nl++;	602	path++, nl++;
…		…
407	*dstp++ = '0';	605	*dstp++ = '0';
408		606
409	memcpy (dstp, path - nl, nl);	607	memcpy (dstp, path - nl, nl);
410	dstp += nl;	608	dstp += nl;
411	}	609	}
		610	else
		611	dstp++ = path++;
		612	#if 0
412	else	613	else
413	{	614	{
414	STRLEN cl;	615	STRLEN cl;
415	to_utf8_fold (path, dstp, &cl);	616	to_utf8_fold (path, dstp, &cl);
416	dstp += cl;	617	dstp += cl;
417	path += is_utf8_char (path);	618	path += is_utf8_char (path);
418	}	619	}
		620	#endif
419	}	621	}
420		622
421	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	623	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
422	}	624	}
423	OUTPUT:	625	OUTPUT:
…		…
585	#############################################################################	787	#############################################################################
586		788
587	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	789	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
588		790
589	SV *	791	SV *
590	make_histograms (SV *ar)	792	extract_features (SV *ar)
591	CODE:	793	CODE:
592	{	794	{
593	int i;	795	int i;
594	AV av, result;	796	AV av, result;
595		797
596	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	798	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
597	croak ("Not an array ref as first argument to make_histogram");	799	croak ("Not an array ref as first argument to extract_features");
598		800
599	av = (AV *) SvRV (ar);	801	av = (AV *) SvRV (ar);
600	result = newAV ();	802	result = newAV ();
601		803
602	for (i = 0; i <= av_len (av); ++i)	804	for (i = 0; i <= av_len (av); ++i)
603	{	805	{
604	const int HISTSIZE = 64;
605
606	int j;
607	SV sv = av_fetch (av, i, 1);	806	SV sv = av_fetch (av, i, 1);
608	STRLEN len;
609	char *buf = SvPVbyte (sv, len);
610
611	int tmphist[HISTSIZE];
612	float *hist;
613
614	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	807	SV histsv = newSV (9 sizeof (float) + 1);
		808
615	SvPOK_on (histsv);	809	SvPOK_on (histsv);
616	SvCUR_set (histsv, HISTSIZE * sizeof (float));	810	SvCUR_set (histsv, 9 * sizeof (float));
617	hist = (float *)SvPVX (histsv);	811	float hist = (float )SvPVX (histsv);
618		812
619	Zero (tmphist, sizeof (tmphist), char);	813	struct feature f_h, f_s, f_v;
		814	feature_init (&f_h);
		815	feature_init (&f_s);
		816	feature_init (&f_v);
620		817
621	for (j = len; j--; )
622	{
623	unsigned int idx
624	= ((*buf & 0xc0) >> 2)
625	\| ((*buf & 0x18) >> 1)
626	\| (*buf & 0x03);
627
628	++tmphist[idx];
629	++buf;
630	}
631		818	{
632	for (j = 0; j < HISTSIZE; ++j)	819	STRLEN len;
633	hist[j] = (float)tmphist[j] / (len + 1e-30);	820	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		821	while (len >= 3)
		822	{
		823	unsigned int r, g, b, h, s, v;
		824	r = buf++; g = buf++; b = *buf++;
		825	rgb_to_hsv (r, g, b, &h, &s, &v);
		826
		827	feature_update_pass_1 (&f_h, h);
		828	feature_update_pass_1 (&f_s, s);
		829	feature_update_pass_1 (&f_v, v);
		830
		831	len -= 3;
		832	}
		833
		834	feature_finish_pass_1 (&f_h);
		835	feature_finish_pass_1 (&f_s);
		836	feature_finish_pass_1 (&f_v);
		837	}
		838
		839	{
		840	STRLEN len;
		841	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		842	while (len >= 3)
		843	{
		844	unsigned int r, g, b, h, s, v;
		845	r = buf++; g = buf++; b = *buf++;
		846	rgb_to_hsv (r, g, b, &h, &s, &v);
		847
		848	feature_update_pass_2 (&f_h, h);
		849	feature_update_pass_2 (&f_s, s);
		850	feature_update_pass_2 (&f_v, v);
		851
		852	len -= 3;
		853	}
		854
		855	feature_finish_pass_2 (&f_h);
		856	feature_finish_pass_2 (&f_s);
		857	feature_finish_pass_2 (&f_v);
		858	}
		859
		860	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		861	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		862	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
634		863
635	av_push (result, histsv);	864	av_push (result, histsv);
636	}	865	}
637		866
638	RETVAL = newRV_noinc ((SV *)result);	867	RETVAL = newRV_noinc ((SV *)result);
639	}	868	}
640	OUTPUT:	869	OUTPUT:
641	RETVAL	870	RETVAL
642		871
643

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Comparing CV/CV.xs (file contents): Revision 1.33 by root, Fri Feb 17 08:48:06 2006 UTC vs. Revision 1.52 by root, Sat Dec 23 04:25:50 2017 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.33 by root, Fri Feb 17 08:48:06 2006 UTC vs.
Revision 1.52 by root, Sat Dec 23 04:25:50 2017 UTC