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

Comparing CV/CV.xs (file contents):
Revision 1.18 by root, Wed Jul 20 09:06:37 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>
		12	#include <glib.h>
		13	#include <gtk/gtk.h>
9	#include <gdk-pixbuf/gdk-pixbuf.h>	14	#include <gdk-pixbuf/gdk-pixbuf.h>
10		15
11	#include <gperl.h>	16	#include <gperl.h>
12	#include <gtk2perl.h>	17	#include <gtk2perl.h>
13		18
		19	#include <assert.h>
		20
		21	#include "perlmulticore.h"
		22
14	#define IW 80 /* MUST match Schnauer.pm! */	23	#define IW 80 /* MUST match Schnauzer.pm! */
15	#define IH 60 /* MUST match Schnauer.pm! */	24	#define IH 60 /* MUST match Schnauzer.pm! */
16		25
17	#define RAND (seed = (seed + 7141) * 54773 % 134456)	26	#define RAND (seed = (seed + 7141) * 54773 % 134456)
18		27
19	#define LINELENGTH 240	28	#define LINELENGTH 240
20		29
21	#define ELLIPSIS "\xe2\x80\xa6"	30	#define ELLIPSIS "\xe2\x80\xa6"
		31
		32	typedef char *octet_string;
22		33
23	struct jpg_err_mgr	34	struct jpg_err_mgr
24	{	35	{
25	struct jpeg_error_mgr err;	36	struct jpeg_error_mgr err;
26	jmp_buf setjmp_buffer;	37	jmp_buf setjmp_buffer;
…		…
63		74
64	*h &= 255;	75	*h &= 255;
65	}	76	}
66	}	77	}
67		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
68	static guint32 a85_val;	134	static guint32 a85_val;
69	static guint a85_cnt;	135	static guint a85_cnt;
70	static guchar a85_buf[LINELENGTH], *a85_ptr;	136	static guchar a85_buf[LINELENGTH], *a85_ptr;
71		137
72	static void	138	static void
…		…
124		190
125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	191	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
126		192
127	PROTOTYPES: ENABLE	193	PROTOTYPES: ENABLE
128		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
		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);
		262
		263	gboolean
		264	gdk_net_wm_supports (GdkAtom property)
		265	CODE:
		266	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		267	RETVAL = gdk_net_wm_supports (property);
		268	#else
		269	RETVAL = 0;
		270	#endif
		271	OUTPUT:
		272	RETVAL
		273
129	GdkPixbuf_noinc *	274	GdkPixbuf_noinc *
130	transpose (GdkPixbuf *pb)	275	dealpha_expose (GdkPixbuf *pb)
131	CODE:	276	CODE:
		277	perlinterp_release ();
132	{	278	{
133	int w = gdk_pixbuf_get_width (pb);	279	int w = gdk_pixbuf_get_width (pb);
134	int h = gdk_pixbuf_get_height (pb);	280	int h = gdk_pixbuf_get_height (pb);
135	int bpp = gdk_pixbuf_get_n_channels (pb);	281	int bpp = gdk_pixbuf_get_n_channels (pb);
136	int x, y, i;	282	int x, y, i;
137	guchar src = gdk_pixbuf_get_pixels (pb), dst;	283	guchar src = gdk_pixbuf_get_pixels (pb), dst;
138	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	284	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
139		285
140	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	286	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
141		287
142	dst = gdk_pixbuf_get_pixels (RETVAL);	288	dst = gdk_pixbuf_get_pixels (RETVAL);
143	dstr = gdk_pixbuf_get_rowstride (RETVAL);	289	dstr = gdk_pixbuf_get_rowstride (RETVAL);
144		290
145	for (y = 0; y < h; y++)
146	for (x = 0; x < w; x++)	291	for (x = 0; x < w; x++)
		292	for (y = 0; y < h; y++)
147	for (i = 0; i < bpp; i++)	293	for (i = 0; i < 3; i++)
148	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];
149	}	295	}
		296	perlinterp_acquire ();
150	OUTPUT:	297	OUTPUT:
151	RETVAL	298	RETVAL
152		299
153	GdkPixbuf_noinc *	300	GdkPixbuf_noinc *
154	flop (GdkPixbuf *pb)	301	rotate (GdkPixbuf *pb, int angle)
155	CODE:	302	CODE:
156	{	303	perlinterp_release ();
157	int w = gdk_pixbuf_get_width (pb);	304	if (angle < 0)
158	int h = gdk_pixbuf_get_height (pb);	305	angle += 360;
159	int bpp = gdk_pixbuf_get_n_channels (pb);	306	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
160	int x, y, i;	307	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
161	guchar src = gdk_pixbuf_get_pixels (pb), dst;	308	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
162	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	309	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
163		310	: angle);
164	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	311	perlinterp_acquire ();
165
166	dst = gdk_pixbuf_get_pixels (RETVAL);
167	dstr = gdk_pixbuf_get_rowstride (RETVAL);
168
169	for (y = 0; y < h; y++)
170	for (x = 0; x < w; x++)
171	for (i = 0; i < bpp; i++)
172	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
173	}
174	OUTPUT:	312	OUTPUT:
175	RETVAL	313	RETVAL
176		314
177	GdkPixbuf_noinc *	315	GdkPixbuf_noinc *
178	load_jpeg (char *path, int thumbnail=0)	316	load_jpeg (SV *path, int thumbnail=0)
179	CODE:	317	CODE:
180	{	318	{
181	struct jpeg_decompress_struct cinfo;	319	struct jpeg_decompress_struct cinfo;
182	struct jpg_err_mgr jerr;	320	struct jpg_err_mgr jerr;
183	guchar *data;	321	guchar *data;
184	int rs;	322	int rs;
185	FILE *fp;	323	FILE *fp;
186	volatile GdkPixbuf *pb = 0;	324	volatile GdkPixbuf *pb = 0;
		325
187	RETVAL = 0;	326	RETVAL = 0;
188		327
189	if (!(fp = fopen (path, "rb")))	328	fp = fopen (SvPVbyte_nolen (path), "rb");
		329
		330	if (!fp)
190	XSRETURN_UNDEF;	331	XSRETURN_UNDEF;
		332
		333	perlinterp_release ();
191		334
192	cinfo.err = jpeg_std_error (&jerr.err);	335	cinfo.err = jpeg_std_error (&jerr.err);
193		336
194	jerr.err.error_exit = cv_error_exit;	337	jerr.err.error_exit = cv_error_exit;
195	jerr.err.output_message = cv_error_output;	338	jerr.err.output_message = cv_error_output;
…		…
200	jpeg_destroy_decompress (&cinfo);	343	jpeg_destroy_decompress (&cinfo);
201		344
202	if (pb)	345	if (pb)
203	g_object_unref ((gpointer)pb);	346	g_object_unref ((gpointer)pb);
204		347
		348	perlinterp_acquire ();
205	XSRETURN_UNDEF;	349	XSRETURN_UNDEF;
206	}	350	}
207		351
208	jpeg_create_decompress (&cinfo);	352	jpeg_create_decompress (&cinfo);
209		353
…		…
225	{	369	{
226	cinfo.dct_method = JDCT_FASTEST;	370	cinfo.dct_method = JDCT_FASTEST;
227	cinfo.do_fancy_upsampling = FALSE;	371	cinfo.do_fancy_upsampling = FALSE;
228		372
229	while (cinfo.scale_denom < 8	373	while (cinfo.scale_denom < 8
230	&& (cinfo.output_width >> 1) >= IW	374	&& cinfo.output_width >= IW*4
231	&& (cinfo.output_height >> 1) >= IH)	375	&& cinfo.output_height >= IH*4)
232	{	376	{
233	cinfo.scale_denom <<= 1;	377	cinfo.scale_denom <<= 1;
234	jpeg_calc_output_dimensions (&cinfo);	378	jpeg_calc_output_dimensions (&cinfo);
235	}	379	}
236	}	380	}
…		…
261	}	405	}
262		406
263	jpeg_finish_decompress (&cinfo);	407	jpeg_finish_decompress (&cinfo);
264	fclose (fp);	408	fclose (fp);
265	jpeg_destroy_decompress (&cinfo);	409	jpeg_destroy_decompress (&cinfo);
		410	perlinterp_acquire ();
266	}	411	}
267	OUTPUT:	412	OUTPUT:
268	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	}
269		462
270	#############################################################################	463	#############################################################################
271		464
272	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	465	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		466
		467	# currently only works for filenames (octet strings)
273		468
274	SV *	469	SV *
275	foldcase (SV *pathsv)	470	foldcase (SV *pathsv)
276	PROTOTYPE: $	471	PROTOTYPE: $
277	CODE:	472	CODE:
278	{	473	{
279	STRLEN plen;	474	STRLEN plen;
280	U8 *path = SvPVutf8 (pathsv, plen);	475	U8 path = (U8 )SvPV (pathsv, plen);
281	U8 *pend = path + plen;	476	U8 *pend = path + plen;
282	U8 dst [plen * 6 * 3], *dstp = dst;	477	U8 dst [plen * 6 * 3], *dstp = dst;
283		478
284	while (path < pend)	479	while (path < pend)
285	{	480	{
		481	U8 ch = *path;
		482
286	if (path >= '0' && path <= '9')	483	if (ch >= 'a' && ch <= 'z')
		484	dstp++ = path++;
		485	else if (ch >= 'A' && ch <= 'Z')
		486	dstp++ = path++ + ('a' - 'A');
		487	else if (ch >= '0' && ch <= '9')
287	{	488	{
288	STRLEN el, nl = 0;	489	STRLEN el, nl = 0;
289	while (path >= '0' && path <= '9')	490	while (path >= '0' && path <= '9' && path < pend)
290	path++, nl++;	491	path++, nl++;
291		492
292	for (el = nl; el < 6; el++)	493	for (el = nl; el < 6; el++)
293	*dstp++ = '0';	494	*dstp++ = '0';
294		495
295	memcpy (dstp, path - nl, nl);	496	memcpy (dstp, path - nl, nl);
296	dstp += nl;	497	dstp += nl;
297	}	498	}
		499	else
		500	dstp++ = path++;
		501	#if 0
298	else	502	else
299	{	503	{
300	STRLEN cl;	504	STRLEN cl;
301	to_utf8_fold (path, dstp, &cl);	505	to_utf8_fold (path, dstp, &cl);
302	dstp += cl;	506	dstp += cl;
303	path += is_utf8_char (path);	507	path += is_utf8_char (path);
304	}	508	}
		509	#endif
305	}	510	}
306		511
307	RETVAL = newSVpvn (dst, dstp - dst);	512	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
308	}	513	}
309	OUTPUT:	514	OUTPUT:
310	RETVAL	515	RETVAL
311		516
312	GdkPixbuf_noinc *	517	GdkPixbuf_noinc *
313	p7_to_pb (int w, int h, guchar *src)	518	p7_to_pb (int w, int h, SV *src_sv)
		519	PROTOTYPE: @
314	CODE:	520	CODE:
315	{	521	{
316	int x, y;	522	int x, y;
317	guchar dst, d;	523	guchar dst, d;
318	int dstr;	524	int dstr;
		525	guchar src = (guchar )SvPVbyte_nolen (src_sv);
319		526
320	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	527	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
321	dst = gdk_pixbuf_get_pixels (RETVAL);	528	dst = gdk_pixbuf_get_pixels (RETVAL);
322	dstr = gdk_pixbuf_get_rowstride (RETVAL);	529	dstr = gdk_pixbuf_get_rowstride (RETVAL);
323		530
…		…
332	}	539	}
333	}	540	}
334	OUTPUT:	541	OUTPUT:
335	RETVAL	542	RETVAL
336		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
337	SV *	592	SV *
338	pb_to_p7 (GdkPixbuf *pb)	593	pb_to_hv84 (GdkPixbuf *pb)
339	CODE:	594	CODE:
340	{	595	{
341	int w = gdk_pixbuf_get_width (pb);	596	int w = gdk_pixbuf_get_width (pb);
342	int h = gdk_pixbuf_get_height (pb);	597	int h = gdk_pixbuf_get_height (pb);
343	int x, y;	598	int x, y;
344	guchar *dst;	599	guchar *dst;
345	int bpp = gdk_pixbuf_get_n_channels (pb);	600	int bpp = gdk_pixbuf_get_n_channels (pb);
346	guchar *src = gdk_pixbuf_get_pixels (pb);	601	guchar *src = gdk_pixbuf_get_pixels (pb);
347	int sstr = gdk_pixbuf_get_rowstride (pb);	602	int sstr = gdk_pixbuf_get_rowstride (pb);
348	int Er[IW], Eg[IW], Eb[IW];
349	int seed = 77;
350
351	RETVAL = newSV (w * h);
352	SvPOK_only (RETVAL);
353	SvCUR_set (RETVAL, w * h);
354
355	dst = SvPVX (RETVAL);
356
357	memset (Er, 0, sizeof (int) * IW);
358	memset (Eg, 0, sizeof (int) * IW);
359	memset (Eb, 0, sizeof (int) * IW);
360
361	/* some primitive error distribution + random dithering */
362
363	for (y = 0; y < h; y++)
364	{
365	int er = 0, eg = 0, eb = 0;
366
367	for (x = 0; x < w; x++)
368	{
369	int r, g, b;
370	guchar p = src + x bpp + y * sstr;
371
372	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
373	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
374	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
375
376	r = r > 7 ? 7 : r < 0 ? 0 : r;
377	g = g > 7 ? 7 : g < 0 ? 0 : g;
378	b = b > 3 ? 3 : b < 0 ? 0 : b;
379
380	er += p[0] - (r * 255 + 4) / 7;
381	eg += p[1] - (g * 255 + 4) / 7;
382	eb += p[2] - (b * 255 + 2) / 3;
383
384	Er[x] = er >> 1; er -= (er + 1) >> 1;
385	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
386	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
387
388	*dst++ = r << 5 \| g << 2 \| b;
389	}
390	}
391	}
392	OUTPUT:
393	RETVAL
394
395	SV *
396	make_histogram (SV *ar)
397	CODE:
398	{
399	int i;
400	AV av, result;
401
402	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
403	croak ("Not an array ref as first argument to make_histogram");
404
405	av = (AV *) SvRV (ar);
406	result = newAV ();
407
408	for (i = 0; i <= av_len (av); ++i)
409	{
410	const int HISTSIZE = 64;
411
412	int j;
413	SV sv = av_fetch (av, i, 1);
414	STRLEN len;
415	char *buf = SvPVbyte (sv, len);
416
417	int tmphist[HISTSIZE];
418	float *hist;
419
420	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
421	SvPOK_on (histsv);
422	SvCUR_set (histsv, HISTSIZE * sizeof (float));
423	hist = (float *)SvPVX (histsv);
424
425	Zero (tmphist, sizeof (tmphist), char);
426
427	for (j = len; j--; )
428	{
429	unsigned int idx
430	= ((*buf & 0xc0) >> 2)
431	\| ((*buf & 0x18) >> 1)
432	\| (*buf & 0x03);
433
434	++tmphist[idx];
435	++buf;
436	}
437
438	for (j = 0; j < HISTSIZE; ++j)
439	hist[j] = (float)tmphist[j] / (len + 1e-30);
440
441	av_push (result, histsv);
442	}
443
444	RETVAL = newRV_noinc ((SV *)result);
445	}
446	OUTPUT:
447	RETVAL
448
449	#############################################################################
450
451	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
452
453	void
454	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
455	CODE:
456	{
457	int w = gdk_pixbuf_get_width (pb);
458	int h = gdk_pixbuf_get_height (pb);
459	int x, y, i;
460	guchar *dst;
461	int bpp = gdk_pixbuf_get_n_channels (pb);
462	guchar *src = gdk_pixbuf_get_pixels (pb);
463	int sstr = gdk_pixbuf_get_rowstride (pb);
464
465	a85_init ();
466
467	for (y = 0; y < h; y++)
468	for (x = 0; x < w; x++)
469	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
470	a85_push (fp, src [x * bpp + y * sstr + i]);
471
472	a85_finish (fp);
473	}
474
475	void
476	dump_binary (PerlIO fp, GdkPixbuf pb)
477	CODE:
478	{
479	int w = gdk_pixbuf_get_width (pb);
480	int h = gdk_pixbuf_get_height (pb);
481	int x, y, i;
482	guchar *dst;
483	int bpp = gdk_pixbuf_get_n_channels (pb);
484	guchar *src = gdk_pixbuf_get_pixels (pb);
485	int sstr = gdk_pixbuf_get_rowstride (pb);
486
487	for (y = 0; y < h; y++)
488	for (x = 0; x < w; x++)
489	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
490	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
491	}
492
493	#############################################################################
494
495	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
496
497	SV *
498	pb_to_hv84 (GdkPixbuf *pb)
499	CODE:
500	{
501	int w = gdk_pixbuf_get_width (pb);
502	int h = gdk_pixbuf_get_height (pb);
503	int x, y;
504	guchar *dst;
505	int bpp = gdk_pixbuf_get_n_channels (pb);
506	guchar *src = gdk_pixbuf_get_pixels (pb);
507	int sstr = gdk_pixbuf_get_rowstride (pb);
508		603
509	RETVAL = newSV (6 * 8 * 12 / 8);	604	RETVAL = newSV (6 * 8 * 12 / 8);
510	SvPOK_only (RETVAL);	605	SvPOK_only (RETVAL);
511	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	606	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
512		607
513	dst = SvPVX (RETVAL);	608	dst = (guchar *)SvPVX (RETVAL);
514		609
515	/* some primitive error distribution + random dithering */	610	/* some primitive error distribution + random dithering */
516		611
517	for (y = 0; y < h; y++)	612	for (y = 0; y < h; y++)
518	{	613	{
…		…
576	}	671	}
577	}	672	}
578	OUTPUT:	673	OUTPUT:
579	RETVAL	674	RETVAL
580		675
		676	#############################################################################
581		677
		678	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
582		679
		680	SV *
		681	extract_features (SV *ar)
		682	CODE:
		683	{
		684	int i;
		685	AV av, result;
		686
		687	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		688	croak ("Not an array ref as first argument to extract_features");
		689
		690	av = (AV *) SvRV (ar);
		691	result = newAV ();
		692
		693	for (i = 0; i <= av_len (av); ++i)
		694	{
		695	SV sv = av_fetch (av, i, 1);
		696	SV histsv = newSV (9 sizeof (float) + 1);
		697
		698	SvPOK_on (histsv);
		699	SvCUR_set (histsv, 9 * sizeof (float));
		700	float hist = (float )SvPVX (histsv);
		701
		702	struct feature f_h, f_s, f_v;
		703	feature_init (&f_h);
		704	feature_init (&f_s);
		705	feature_init (&f_v);
		706
		707	{
		708	STRLEN len;
		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;
		752
		753	av_push (result, histsv);
		754	}
		755
		756	RETVAL = newRV_noinc ((SV *)result);
		757	}
		758	OUTPUT:
		759	RETVAL
		760

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Comparing CV/CV.xs (file contents): Revision 1.18 by root, Wed Jul 20 09:06:37 2005 UTC vs. Revision 1.46 by root, Sat Jul 4 05:31:17 2015 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.18 by root, Wed Jul 20 09:06:37 2005 UTC vs.
Revision 1.46 by root, Sat Jul 4 05:31:17 2015 UTC