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

Comparing CV/CV.xs (file contents):
Revision 1.24 by root, Wed Aug 17 05:25:28 2005 UTC vs.
Revision 1.46 by root, Sat Jul 4 05:31:17 2015 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
		19	#include <assert.h>
		20
		21	#include "perlmulticore.h"
		22
16	#define IW 80 /* MUST match Schnauer.pm! */	23	#define IW 80 /* MUST match Schnauzer.pm! */
17	#define IH 60 /* MUST match Schnauer.pm! */	24	#define IH 60 /* MUST match Schnauzer.pm! */
18		25
19	#define RAND (seed = (seed + 7141) * 54773 % 134456)	26	#define RAND (seed = (seed + 7141) * 54773 % 134456)
20		27
21	#define LINELENGTH 240	28	#define LINELENGTH 240
22		29
23	#define ELLIPSIS "\xe2\x80\xa6"	30	#define ELLIPSIS "\xe2\x80\xa6"
		31
		32	typedef char *octet_string;
24		33
25	struct jpg_err_mgr	34	struct jpg_err_mgr
26	{	35	{
27	struct jpeg_error_mgr err;	36	struct jpeg_error_mgr err;
28	jmp_buf setjmp_buffer;	37	jmp_buf setjmp_buffer;
…		…
65		74
66	*h &= 255;	75	*h &= 255;
67	}	76	}
68	}	77	}
69		78
		79	struct feature {
		80	float v1, v2, v3; // mean, square, cube
		81	int n;
		82	};
		83
		84	static void
		85	feature_init (struct feature *f)
		86	{
		87	f->v1 = 0.;
		88	f->v2 = 0.;
		89	f->v3 = 0.;
		90	f->n = 0;
		91	}
		92
		93	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		94	// elmex ist schuld.
		95	static void
		96	feature_update_pass_1 (struct feature *f, unsigned int v)
		97	{
		98	f->v1 += v;
		99	f->n += 1;
		100	}
		101
		102	static void
		103	feature_finish_pass_1 (struct feature *f)
		104	{
		105	if (f->n < 1)
		106	return;
		107
		108	f->v1 /= f->n;
		109	}
		110
		111	static void
		112	feature_update_pass_2 (struct feature *f, unsigned int v)
		113	{
		114	float d = v - f->v1;
		115
		116	f->v2 += d * d;
		117	f->v3 += d * d * d;
		118	}
		119
		120	static void
		121	feature_finish_pass_2 (struct feature *f)
		122	{
		123	if (f->n < 1)
		124	return;
		125
		126	f->v2 /= f->n;
		127	f->v3 /= f->n;
		128
		129	f->v1 /= 255.;
		130	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		131	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		132	}
		133
70	static guint32 a85_val;	134	static guint32 a85_val;
71	static guint a85_cnt;	135	static guint a85_cnt;
72	static guchar a85_buf[LINELENGTH], *a85_ptr;	136	static guchar a85_buf[LINELENGTH], *a85_ptr;
73		137
74	static void	138	static void
…		…
126		190
127	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	191	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128		192
129	PROTOTYPES: ENABLE	193	PROTOTYPES: ENABLE
130		194
		195	# missing function in perl. really :)
		196	int
		197	common_prefix_length (a, b)
		198	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		199	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		200	CODE:
		201	RETVAL = 0;
		202
		203	while (a == b && *a)
		204	{
		205	RETVAL += (*a & 0xc0) != 0x80;
		206	a++, b++;
		207	}
		208
		209	OUTPUT:
		210	RETVAL
		211
		212	const char *
		213	magic (octet_string path)
		214	CODE:
		215	{
		216	static magic_t cookie;
		217
		218	if (!cookie)
		219	{
		220	cookie = magic_open (MAGIC_SYMLINK);
		221
		222	if (cookie)
		223	magic_load (cookie, 0);
		224	else
		225	XSRETURN_UNDEF;
		226	}
		227
		228	RETVAL = magic_file (cookie, path);
		229	}
		230	OUTPUT:
		231	RETVAL
		232
		233	const char *
		234	magic_mime (octet_string path)
		235	CODE:
		236	{
		237	static magic_t cookie;
		238
		239	if (!cookie)
		240	{
		241	cookie = magic_open (MAGIC_MIME \| MAGIC_SYMLINK);
		242
		243	if (cookie)
		244	magic_load (cookie, 0);
		245	else
		246	XSRETURN_UNDEF;
		247	}
		248
		249	perlinterp_release ();
		250	RETVAL = magic_file (cookie, path);
		251	perlinterp_acquire ();
		252	}
		253	OUTPUT:
		254	RETVAL
		255
131	# 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);
132		262
133	gboolean	263	gboolean
134	gdk_net_wm_supports (GdkAtom property)	264	gdk_net_wm_supports (GdkAtom property)
135	CODE:	265	CODE:
136	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	266	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
140	#endif	270	#endif
141	OUTPUT:	271	OUTPUT:
142	RETVAL	272	RETVAL
143		273
144	GdkPixbuf_noinc *	274	GdkPixbuf_noinc *
145	transpose (GdkPixbuf *pb)	275	dealpha_expose (GdkPixbuf *pb)
146	CODE:	276	CODE:
		277	perlinterp_release ();
147	{	278	{
148	int w = gdk_pixbuf_get_width (pb);	279	int w = gdk_pixbuf_get_width (pb);
149	int h = gdk_pixbuf_get_height (pb);	280	int h = gdk_pixbuf_get_height (pb);
150	int bpp = gdk_pixbuf_get_n_channels (pb);	281	int bpp = gdk_pixbuf_get_n_channels (pb);
151	int x, y, i;	282	int x, y, i;
152	guchar src = gdk_pixbuf_get_pixels (pb), dst;	283	guchar src = gdk_pixbuf_get_pixels (pb), dst;
153	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	284	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
154		285
155	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	286	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
156		287
157	dst = gdk_pixbuf_get_pixels (RETVAL);	288	dst = gdk_pixbuf_get_pixels (RETVAL);
158	dstr = gdk_pixbuf_get_rowstride (RETVAL);	289	dstr = gdk_pixbuf_get_rowstride (RETVAL);
159		290
160	for (y = 0; y < h; y++)
161	for (x = 0; x < w; x++)	291	for (x = 0; x < w; x++)
		292	for (y = 0; y < h; y++)
162	for (i = 0; i < bpp; i++)	293	for (i = 0; i < 3; i++)
163	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	294	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
164	}	295	}
		296	perlinterp_acquire ();
165	OUTPUT:	297	OUTPUT:
166	RETVAL	298	RETVAL
167		299
168	GdkPixbuf_noinc *	300	GdkPixbuf_noinc *
169	flop (GdkPixbuf *pb)	301	rotate (GdkPixbuf *pb, int angle)
170	CODE:	302	CODE:
171	{	303	perlinterp_release ();
172	int w = gdk_pixbuf_get_width (pb);	304	if (angle < 0)
173	int h = gdk_pixbuf_get_height (pb);	305	angle += 360;
174	int bpp = gdk_pixbuf_get_n_channels (pb);	306	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
175	int x, y, i;	307	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
176	guchar src = gdk_pixbuf_get_pixels (pb), dst;	308	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
177	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	309	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
178		310	: angle);
179	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	311	perlinterp_acquire ();
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:	312	OUTPUT:
190	RETVAL	313	RETVAL
191		314
192	GdkPixbuf_noinc *	315	GdkPixbuf_noinc *
193	load_jpeg (SV *path, int thumbnail=0)	316	load_jpeg (SV *path, int thumbnail=0)
…		…
197	struct jpg_err_mgr jerr;	320	struct jpg_err_mgr jerr;
198	guchar *data;	321	guchar *data;
199	int rs;	322	int rs;
200	FILE *fp;	323	FILE *fp;
201	volatile GdkPixbuf *pb = 0;	324	volatile GdkPixbuf *pb = 0;
202	gchar *filename;
203		325
204	RETVAL = 0;	326	RETVAL = 0;
205		327
206	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
207	fp = fopen (filename, "rb");	328	fp = fopen (SvPVbyte_nolen (path), "rb");
208	g_free (filename);
209		329
210	if (!fp)	330	if (!fp)
211	XSRETURN_UNDEF;	331	XSRETURN_UNDEF;
212		332
		333	perlinterp_release ();
		334
213	cinfo.err = jpeg_std_error (&jerr.err);	335	cinfo.err = jpeg_std_error (&jerr.err);
214		336
215	jerr.err.error_exit = cv_error_exit;	337	jerr.err.error_exit = cv_error_exit;
216	jerr.err.output_message = cv_error_output;	338	jerr.err.output_message = cv_error_output;
217		339
…		…
221	jpeg_destroy_decompress (&cinfo);	343	jpeg_destroy_decompress (&cinfo);
222		344
223	if (pb)	345	if (pb)
224	g_object_unref ((gpointer)pb);	346	g_object_unref ((gpointer)pb);
225		347
		348	perlinterp_acquire ();
226	XSRETURN_UNDEF;	349	XSRETURN_UNDEF;
227	}	350	}
228		351
229	jpeg_create_decompress (&cinfo);	352	jpeg_create_decompress (&cinfo);
230		353
…		…
282	}	405	}
283		406
284	jpeg_finish_decompress (&cinfo);	407	jpeg_finish_decompress (&cinfo);
285	fclose (fp);	408	fclose (fp);
286	jpeg_destroy_decompress (&cinfo);	409	jpeg_destroy_decompress (&cinfo);
		410	perlinterp_acquire ();
287	}	411	}
288	OUTPUT:	412	OUTPUT:
289	RETVAL	413	RETVAL
		414
		415	void
		416	compare (GdkPixbuf a, GdkPixbuf b)
		417	PPCODE:
		418	perlinterp_release ();
		419	{
		420	int w = gdk_pixbuf_get_width (a);
		421	int h = gdk_pixbuf_get_height (a);
		422
		423	int sa = gdk_pixbuf_get_rowstride (a);
		424	int sb = gdk_pixbuf_get_rowstride (b);
		425
		426	guchar *pa = gdk_pixbuf_get_pixels (a);
		427	guchar *pb = gdk_pixbuf_get_pixels (b);
		428
		429	int x, y;
		430
		431	assert (w == gdk_pixbuf_get_width (b));
		432	assert (h == gdk_pixbuf_get_height (b));
		433
		434	assert (gdk_pixbuf_get_n_channels (a) == 3);
		435	assert (gdk_pixbuf_get_n_channels (b) == 3);
		436
		437	double diff = 0.;
		438	int peak = 0;
		439
		440	if (w && h)
		441	for (y = 0; y < h; y++)
		442	{
		443	guchar pa_ = pa + y sa;
		444	guchar pb_ = pb + y sb;
		445
		446	for (x = 0; x < w; x++)
		447	{
		448	int d;
		449
		450	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		451	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		452	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		453	}
		454	}
		455
		456	perlinterp_acquire ();
		457
		458	EXTEND (SP, 2);
		459	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		460	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		461	}
290		462
291	#############################################################################	463	#############################################################################
292		464
293	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	465	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		466
		467	# currently only works for filenames (octet strings)
294		468
295	SV *	469	SV *
296	foldcase (SV *pathsv)	470	foldcase (SV *pathsv)
297	PROTOTYPE: $	471	PROTOTYPE: $
298	CODE:	472	CODE:
299	{	473	{
300	STRLEN plen;	474	STRLEN plen;
301	U8 *path = SvPVutf8 (pathsv, plen);	475	U8 path = (U8 )SvPV (pathsv, plen);
302	U8 *pend = path + plen;	476	U8 *pend = path + plen;
303	U8 dst [plen * 6 * 3], *dstp = dst;	477	U8 dst [plen * 6 * 3], *dstp = dst;
304		478
305	while (path < pend)	479	while (path < pend)
306	{	480	{
307	U8 ch = *path;	481	U8 ch = *path;
308		482
309	if (ch >= 'a' && ch <= 'z')	483	if (ch >= 'a' && ch <= 'z')
310	dstp++ = path++;	484	dstp++ = path++;
		485	else if (ch >= 'A' && ch <= 'Z')
		486	dstp++ = path++ + ('a' - 'A');
311	else if (ch >= '0' && ch <= '9')	487	else if (ch >= '0' && ch <= '9')
312	{	488	{
313	STRLEN el, nl = 0;	489	STRLEN el, nl = 0;
314	while (path >= '0' && path <= '9' && path < pend)	490	while (path >= '0' && path <= '9' && path < pend)
315	path++, nl++;	491	path++, nl++;
…		…
318	*dstp++ = '0';	494	*dstp++ = '0';
319		495
320	memcpy (dstp, path - nl, nl);	496	memcpy (dstp, path - nl, nl);
321	dstp += nl;	497	dstp += nl;
322	}	498	}
		499	else
		500	dstp++ = path++;
		501	#if 0
323	else	502	else
324	{	503	{
325	STRLEN cl;	504	STRLEN cl;
326	to_utf8_fold (path, dstp, &cl);	505	to_utf8_fold (path, dstp, &cl);
327	dstp += cl;	506	dstp += cl;
328	path += is_utf8_char (path);	507	path += is_utf8_char (path);
329	}	508	}
		509	#endif
330	}	510	}
331		511
332	RETVAL = newSVpvn (dst, dstp - dst);	512	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
333	}	513	}
334	OUTPUT:	514	OUTPUT:
335	RETVAL	515	RETVAL
336		516
337	GdkPixbuf_noinc *	517	GdkPixbuf_noinc *
…		…
340	CODE:	520	CODE:
341	{	521	{
342	int x, y;	522	int x, y;
343	guchar dst, d;	523	guchar dst, d;
344	int dstr;	524	int dstr;
345	guchar *src = SvPVbyte_nolen (src_sv);	525	guchar src = (guchar )SvPVbyte_nolen (src_sv);
346		526
347	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	527	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
348	dst = gdk_pixbuf_get_pixels (RETVAL);	528	dst = gdk_pixbuf_get_pixels (RETVAL);
349	dstr = gdk_pixbuf_get_rowstride (RETVAL);	529	dstr = gdk_pixbuf_get_rowstride (RETVAL);
350		530
…		…
359	}	539	}
360	}	540	}
361	OUTPUT:	541	OUTPUT:
362	RETVAL	542	RETVAL
363		543
		544	#############################################################################
		545
		546	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		547
		548	void
		549	dump_ascii85 (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	a85_init ();
		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	a85_push (fp, src [x * bpp + y * sstr + i]);
		566
		567	a85_finish (fp);
		568	}
		569
		570	void
		571	dump_binary (PerlIO fp, GdkPixbuf pb)
		572	CODE:
		573	{
		574	int w = gdk_pixbuf_get_width (pb);
		575	int h = gdk_pixbuf_get_height (pb);
		576	int x, y, i;
		577	guchar *dst;
		578	int bpp = gdk_pixbuf_get_n_channels (pb);
		579	guchar *src = gdk_pixbuf_get_pixels (pb);
		580	int sstr = gdk_pixbuf_get_rowstride (pb);
		581
		582	for (y = 0; y < h; y++)
		583	for (x = 0; x < w; x++)
		584	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		585	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		586	}
		587
		588	#############################################################################
		589
		590	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		591
364	SV *	592	SV *
365	pb_to_p7 (GdkPixbuf *pb)	593	pb_to_hv84 (GdkPixbuf *pb)
366	CODE:	594	CODE:
367	{	595	{
368	int w = gdk_pixbuf_get_width (pb);	596	int w = gdk_pixbuf_get_width (pb);
369	int h = gdk_pixbuf_get_height (pb);	597	int h = gdk_pixbuf_get_height (pb);
370	int x, y;	598	int x, y;
371	guchar *dst;	599	guchar *dst;
372	int bpp = gdk_pixbuf_get_n_channels (pb);	600	int bpp = gdk_pixbuf_get_n_channels (pb);
373	guchar *src = gdk_pixbuf_get_pixels (pb);	601	guchar *src = gdk_pixbuf_get_pixels (pb);
374	int sstr = gdk_pixbuf_get_rowstride (pb);	602	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 = 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		603
482	RETVAL = newSV (6 * 8 * 12 / 8);	604	RETVAL = newSV (6 * 8 * 12 / 8);
483	SvPOK_only (RETVAL);	605	SvPOK_only (RETVAL);
484	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	606	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
485		607
486	dst = SvPVX (RETVAL);	608	dst = (guchar *)SvPVX (RETVAL);
487		609
488	/* some primitive error distribution + random dithering */	610	/* some primitive error distribution + random dithering */
489		611
490	for (y = 0; y < h; y++)	612	for (y = 0; y < h; y++)
491	{	613	{
…		…
554	#############################################################################	676	#############################################################################
555		677
556	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	678	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
557		679
558	SV *	680	SV *
559	make_histograms (SV *ar)	681	extract_features (SV *ar)
560	CODE:	682	CODE:
561	{	683	{
562	int i;	684	int i;
563	AV av, result;	685	AV av, result;
564		686
565	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	687	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
566	croak ("Not an array ref as first argument to make_histogram");	688	croak ("Not an array ref as first argument to extract_features");
567		689
568	av = (AV *) SvRV (ar);	690	av = (AV *) SvRV (ar);
569	result = newAV ();	691	result = newAV ();
570		692
571	for (i = 0; i <= av_len (av); ++i)	693	for (i = 0; i <= av_len (av); ++i)
572	{	694	{
573	const int HISTSIZE = 64;
574
575	int j;
576	SV sv = av_fetch (av, i, 1);	695	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);	696	SV histsv = newSV (9 sizeof (float) + 1);
		697
584	SvPOK_on (histsv);	698	SvPOK_on (histsv);
585	SvCUR_set (histsv, HISTSIZE * sizeof (float));	699	SvCUR_set (histsv, 9 * sizeof (float));
586	hist = (float *)SvPVX (histsv);	700	float hist = (float )SvPVX (histsv);
587		701
588	Zero (tmphist, sizeof (tmphist), char);	702	struct feature f_h, f_s, f_v;
		703	feature_init (&f_h);
		704	feature_init (&f_s);
		705	feature_init (&f_v);
589		706
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		707	{
601	for (j = 0; j < HISTSIZE; ++j)	708	STRLEN len;
602	hist[j] = (float)tmphist[j] / (len + 1e-30);	709	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		710	while (len >= 3)
		711	{
		712	unsigned int r, g, b, h, s, v;
		713	r = buf++; g = buf++; b = *buf++;
		714	rgb_to_hsv (r, g, b, &h, &s, &v);
		715
		716	feature_update_pass_1 (&f_h, h);
		717	feature_update_pass_1 (&f_s, s);
		718	feature_update_pass_1 (&f_v, v);
		719
		720	len -= 3;
		721	}
		722
		723	feature_finish_pass_1 (&f_h);
		724	feature_finish_pass_1 (&f_s);
		725	feature_finish_pass_1 (&f_v);
		726	}
		727
		728	{
		729	STRLEN len;
		730	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		731	while (len >= 3)
		732	{
		733	unsigned int r, g, b, h, s, v;
		734	r = buf++; g = buf++; b = *buf++;
		735	rgb_to_hsv (r, g, b, &h, &s, &v);
		736
		737	feature_update_pass_2 (&f_h, h);
		738	feature_update_pass_2 (&f_s, s);
		739	feature_update_pass_2 (&f_v, v);
		740
		741	len -= 3;
		742	}
		743
		744	feature_finish_pass_2 (&f_h);
		745	feature_finish_pass_2 (&f_s);
		746	feature_finish_pass_2 (&f_v);
		747	}
		748
		749	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		750	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		751	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
603		752
604	av_push (result, histsv);	753	av_push (result, histsv);
605	}	754	}
606		755
607	RETVAL = newRV_noinc ((SV *)result);	756	RETVAL = newRV_noinc ((SV *)result);
608	}	757	}
609	OUTPUT:	758	OUTPUT:
610	RETVAL	759	RETVAL
611		760
612

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing CV/CV.xs (file contents): Revision 1.24 by root, Wed Aug 17 05:25:28 2005 UTC vs. Revision 1.46 by root, Sat Jul 4 05:31:17 2015 UTC

Diff Legend

Comparing CV/CV.xs (file contents):
Revision 1.24 by root, Wed Aug 17 05:25:28 2005 UTC vs.
Revision 1.46 by root, Sat Jul 4 05:31:17 2015 UTC