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

Comparing CV/CV.xs (file contents):
Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs.
Revision 1.48 by root, Wed May 24 05:00:57 2017 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;
27	};	38	};
28		39
29	static void	40	static void
30	cv_error_exit (j_common_ptr cinfo)	41	cv_error_exit (j_common_ptr cinfo)
31	{	42	{
		43	cinfo->err->output_message (cinfo);
32	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	44	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
33	}	45	}
34		46
35	static void	47	static void
36	cv_error_output (j_common_ptr cinfo)	48	cv_error_output (j_common_ptr cinfo)
37	{	49	{
		50	char msg[JMSG_LENGTH_MAX];
		51
		52	cinfo->err->format_message (cinfo, msg);
		53
		54	fprintf (stderr, "JPEG decoding error: %s\n", msg);
38	return;	55	return;
39	}	56	}
40		57
41	static void	58	static void
42	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,	59	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
…		…
63		80
64	*h &= 255;	81	*h &= 255;
65	}	82	}
66	}	83	}
67		84
		85	struct feature {
		86	float v1, v2, v3; // mean, square, cube
		87	int n;
		88	};
		89
		90	static void
		91	feature_init (struct feature *f)
		92	{
		93	f->v1 = 0.;
		94	f->v2 = 0.;
		95	f->v3 = 0.;
		96	f->n = 0;
		97	}
		98
		99	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		100	// elmex ist schuld.
		101	static void
		102	feature_update_pass_1 (struct feature *f, unsigned int v)
		103	{
		104	f->v1 += v;
		105	f->n += 1;
		106	}
		107
		108	static void
		109	feature_finish_pass_1 (struct feature *f)
		110	{
		111	if (f->n < 1)
		112	return;
		113
		114	f->v1 /= f->n;
		115	}
		116
		117	static void
		118	feature_update_pass_2 (struct feature *f, unsigned int v)
		119	{
		120	float d = v - f->v1;
		121
		122	f->v2 += d * d;
		123	f->v3 += d * d * d;
		124	}
		125
		126	static void
		127	feature_finish_pass_2 (struct feature *f)
		128	{
		129	if (f->n < 1)
		130	return;
		131
		132	f->v2 /= f->n;
		133	f->v3 /= f->n;
		134
		135	f->v1 /= 255.;
		136	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		137	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		138	}
		139
68	static guint32 a85_val;	140	static guint32 a85_val;
69	static guint a85_cnt;	141	static guint a85_cnt;
70	static guchar a85_buf[LINELENGTH], *a85_ptr;	142	static guchar a85_buf[LINELENGTH], *a85_ptr;
71		143
72	static void	144	static void
…		…
124		196
125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	197	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
126		198
127	PROTOTYPES: ENABLE	199	PROTOTYPES: ENABLE
128		200
		201	# missing function in perl. really :)
		202	int
		203	common_prefix_length (a, b)
		204	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		205	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		206	CODE:
		207	RETVAL = 0;
		208
		209	while (a == b && *a)
		210	{
		211	RETVAL += (*a & 0xc0) != 0x80;
		212	a++, b++;
		213	}
		214
		215	OUTPUT:
		216	RETVAL
		217
		218	const char *
		219	magic (octet_string path)
		220	CODE:
		221	{
		222	static magic_t cookie;
		223
		224	if (!cookie)
		225	{
		226	cookie = magic_open (MAGIC_SYMLINK);
		227
		228	if (cookie)
		229	magic_load (cookie, 0);
		230	else
		231	XSRETURN_UNDEF;
		232	}
		233
		234	RETVAL = magic_file (cookie, path);
		235	}
		236	OUTPUT:
		237	RETVAL
		238
		239	const char *
		240	magic_mime (octet_string path)
		241	CODE:
		242	{
		243	static magic_t cookie;
		244
		245	if (!cookie)
		246	{
		247	cookie = magic_open (MAGIC_MIME \| MAGIC_SYMLINK);
		248
		249	if (cookie)
		250	magic_load (cookie, 0);
		251	else
		252	XSRETURN_UNDEF;
		253	}
		254
		255	perlinterp_release ();
		256	RETVAL = magic_file (cookie, path);
		257	perlinterp_acquire ();
		258	}
		259	OUTPUT:
		260	RETVAL
		261
129	# missing in Gtk2 perl module	262	# missing/broken in Gtk2 perl module
		263
		264	void
		265	gdk_window_clear_hints (GdkWindow *window)
		266	CODE:
		267	gdk_window_set_geometry_hints (window, 0, 0);
130		268
131	gboolean	269	gboolean
132	gdk_net_wm_supports (GdkAtom property)	270	gdk_net_wm_supports (GdkAtom property)
133	CODE:	271	CODE:
134	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	272	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
138	#endif	276	#endif
139	OUTPUT:	277	OUTPUT:
140	RETVAL	278	RETVAL
141		279
142	GdkPixbuf_noinc *	280	GdkPixbuf_noinc *
143	transpose (GdkPixbuf *pb)	281	dealpha_expose (GdkPixbuf *pb)
144	CODE:	282	CODE:
		283	perlinterp_release ();
145	{	284	{
146	int w = gdk_pixbuf_get_width (pb);	285	int w = gdk_pixbuf_get_width (pb);
147	int h = gdk_pixbuf_get_height (pb);	286	int h = gdk_pixbuf_get_height (pb);
148	int bpp = gdk_pixbuf_get_n_channels (pb);	287	int bpp = gdk_pixbuf_get_n_channels (pb);
149	int x, y, i;	288	int x, y, i;
150	guchar src = gdk_pixbuf_get_pixels (pb), dst;	289	guchar src = gdk_pixbuf_get_pixels (pb), dst;
151	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	290	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
152		291
153	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	292	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
154		293
155	dst = gdk_pixbuf_get_pixels (RETVAL);	294	dst = gdk_pixbuf_get_pixels (RETVAL);
156	dstr = gdk_pixbuf_get_rowstride (RETVAL);	295	dstr = gdk_pixbuf_get_rowstride (RETVAL);
157		296
158	for (y = 0; y < h; y++)
159	for (x = 0; x < w; x++)	297	for (x = 0; x < w; x++)
		298	for (y = 0; y < h; y++)
160	for (i = 0; i < bpp; i++)	299	for (i = 0; i < 3; i++)
161	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	300	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
162	}	301	}
		302	perlinterp_acquire ();
163	OUTPUT:	303	OUTPUT:
164	RETVAL	304	RETVAL
165		305
166	GdkPixbuf_noinc *	306	GdkPixbuf_noinc *
167	flop (GdkPixbuf *pb)	307	rotate (GdkPixbuf *pb, int angle)
168	CODE:	308	CODE:
169	{	309	perlinterp_release ();
170	int w = gdk_pixbuf_get_width (pb);	310	if (angle < 0)
171	int h = gdk_pixbuf_get_height (pb);	311	angle += 360;
172	int bpp = gdk_pixbuf_get_n_channels (pb);	312	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
173	int x, y, i;	313	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
174	guchar src = gdk_pixbuf_get_pixels (pb), dst;	314	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
175	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	315	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
176		316	: angle);
177	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	317	perlinterp_acquire ();
178
179	dst = gdk_pixbuf_get_pixels (RETVAL);
180	dstr = gdk_pixbuf_get_rowstride (RETVAL);
181
182	for (y = 0; y < h; y++)
183	for (x = 0; x < w; x++)
184	for (i = 0; i < bpp; i++)
185	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
186	}
187	OUTPUT:	318	OUTPUT:
188	RETVAL	319	RETVAL
189		320
190	GdkPixbuf_noinc *	321	GdkPixbuf_noinc *
191	load_jpeg (char *path, int thumbnail=0)	322	load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0)
192	CODE:	323	CODE:
193	{	324	{
194	struct jpeg_decompress_struct cinfo;	325	struct jpeg_decompress_struct cinfo;
195	struct jpg_err_mgr jerr;	326	struct jpg_err_mgr jerr;
196	guchar *data;	327	guchar *data;
197	int rs;	328	int rs;
198	FILE *fp;	329	FILE *fp;
199	volatile GdkPixbuf *pb = 0;	330	volatile GdkPixbuf *pb = 0;
		331
200	RETVAL = 0;	332	RETVAL = 0;
201		333
202	if (!(fp = fopen (path, "rb")))	334	fp = fopen (SvPVbyte_nolen (path), "rb");
		335
		336	if (!fp)
203	XSRETURN_UNDEF;	337	XSRETURN_UNDEF;
		338
		339	perlinterp_release ();
204		340
205	cinfo.err = jpeg_std_error (&jerr.err);	341	cinfo.err = jpeg_std_error (&jerr.err);
206		342
207	jerr.err.error_exit = cv_error_exit;	343	jerr.err.error_exit = cv_error_exit;
208	jerr.err.output_message = cv_error_output;	344	jerr.err.output_message = cv_error_output;
…		…
213	jpeg_destroy_decompress (&cinfo);	349	jpeg_destroy_decompress (&cinfo);
214		350
215	if (pb)	351	if (pb)
216	g_object_unref ((gpointer)pb);	352	g_object_unref ((gpointer)pb);
217		353
		354	perlinterp_acquire ();
218	XSRETURN_UNDEF;	355	XSRETURN_UNDEF;
219	}	356	}
220		357
221	jpeg_create_decompress (&cinfo);	358	jpeg_create_decompress (&cinfo);
222		359
…		…
238	{	375	{
239	cinfo.dct_method = JDCT_FASTEST;	376	cinfo.dct_method = JDCT_FASTEST;
240	cinfo.do_fancy_upsampling = FALSE;	377	cinfo.do_fancy_upsampling = FALSE;
241		378
242	while (cinfo.scale_denom < 8	379	while (cinfo.scale_denom < 8
243	&& cinfo.output_width >= IW*4	380	&& cinfo.output_width >= iw*4
244	&& cinfo.output_height >= IH*4)	381	&& cinfo.output_height >= ih*4)
245	{	382	{
246	cinfo.scale_denom <<= 1;	383	cinfo.scale_denom <<= 1;
247	jpeg_calc_output_dimensions (&cinfo);	384	jpeg_calc_output_dimensions (&cinfo);
248	}	385	}
249	}	386	}
250		387
		388	if (cinfo.output_components != 3)
		389	longjmp (jerr.setjmp_buffer, 3);
		390
		391	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		392	{
		393	cinfo.out_color_space = JCS_CMYK;
		394	cinfo.output_components = 4;
		395	}
		396
251	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	397	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
252	if (!RETVAL)	398	if (!RETVAL)
253	longjmp (jerr.setjmp_buffer, 2);	399	longjmp (jerr.setjmp_buffer, 2);
254		400
255	data = gdk_pixbuf_get_pixels (RETVAL);	401	data = gdk_pixbuf_get_pixels (RETVAL);
256	rs = gdk_pixbuf_get_rowstride (RETVAL);	402	rs = gdk_pixbuf_get_rowstride (RETVAL);
257
258	if (cinfo.output_components != 3)
259	longjmp (jerr.setjmp_buffer, 3);
260		403
261	jpeg_start_decompress (&cinfo);	404	jpeg_start_decompress (&cinfo);
262		405
263	while (cinfo.output_scanline < cinfo.output_height)	406	while (cinfo.output_scanline < cinfo.output_height)
264	{	407	{
…		…
271	rp [3] = (guchar *)rp [2] + rs;	414	rp [3] = (guchar *)rp [2] + rs;
272		415
273	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	416	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
274	}	417	}
275		418
		419	if (cinfo.out_color_space == JCS_CMYK)
		420	{
		421	guchar end = data + cinfo.output_height rs;
		422
		423	while (data < end)
		424	{
		425	U32 c = data [0];
		426	U32 m = data [1];
		427	U32 y = data [2];
		428	U32 k = data [3];
		429
		430	data [0] = c * k / 255;
		431	data [1] = m * k / 255;
		432	data [2] = y * k / 255;
		433	data [3] = 255;
		434
		435	data += 4;
		436	}
		437	}
		438
276	jpeg_finish_decompress (&cinfo);	439	jpeg_finish_decompress (&cinfo);
277	fclose (fp);	440	fclose (fp);
278	jpeg_destroy_decompress (&cinfo);	441	jpeg_destroy_decompress (&cinfo);
		442	perlinterp_acquire ();
279	}	443	}
280	OUTPUT:	444	OUTPUT:
281	RETVAL	445	RETVAL
		446
		447	void
		448	compare (GdkPixbuf a, GdkPixbuf b)
		449	PPCODE:
		450	perlinterp_release ();
		451	{
		452	int w = gdk_pixbuf_get_width (a);
		453	int h = gdk_pixbuf_get_height (a);
		454
		455	int sa = gdk_pixbuf_get_rowstride (a);
		456	int sb = gdk_pixbuf_get_rowstride (b);
		457
		458	guchar *pa = gdk_pixbuf_get_pixels (a);
		459	guchar *pb = gdk_pixbuf_get_pixels (b);
		460
		461	int x, y;
		462
		463	assert (w == gdk_pixbuf_get_width (b));
		464	assert (h == gdk_pixbuf_get_height (b));
		465
		466	assert (gdk_pixbuf_get_n_channels (a) == 3);
		467	assert (gdk_pixbuf_get_n_channels (b) == 3);
		468
		469	double diff = 0.;
		470	int peak = 0;
		471
		472	if (w && h)
		473	for (y = 0; y < h; y++)
		474	{
		475	guchar pa_ = pa + y sa;
		476	guchar pb_ = pb + y sb;
		477
		478	for (x = 0; x < w; x++)
		479	{
		480	int d;
		481
		482	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		483	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		484	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		485	}
		486	}
		487
		488	perlinterp_acquire ();
		489
		490	EXTEND (SP, 2);
		491	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		492	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		493	}
282		494
283	#############################################################################	495	#############################################################################
284		496
285	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	497	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		498
		499	# currently only works for filenames (octet strings)
286		500
287	SV *	501	SV *
288	foldcase (SV *pathsv)	502	foldcase (SV *pathsv)
289	PROTOTYPE: $	503	PROTOTYPE: $
290	CODE:	504	CODE:
291	{	505	{
292	STRLEN plen;	506	STRLEN plen;
293	U8 *path = SvPVutf8 (pathsv, plen);	507	U8 path = (U8 )SvPV (pathsv, plen);
294	U8 *pend = path + plen;	508	U8 *pend = path + plen;
295	U8 dst [plen * 6 * 3], *dstp = dst;	509	U8 dst [plen * 6 * 3], *dstp = dst;
296		510
297	while (path < pend)	511	while (path < pend)
298	{	512	{
299	U8 ch = *path;	513	U8 ch = *path;
300		514
301	if (ch >= 'a' && ch <= 'z')	515	if (ch >= 'a' && ch <= 'z')
302	dstp++ = path++;	516	dstp++ = path++;
		517	else if (ch >= 'A' && ch <= 'Z')
		518	dstp++ = path++ + ('a' - 'A');
303	else if (ch >= '0' && ch <= '9')	519	else if (ch >= '0' && ch <= '9')
304	{	520	{
305	STRLEN el, nl = 0;	521	STRLEN el, nl = 0;
306	while (path >= '0' && path <= '9' && path < pend)	522	while (path >= '0' && path <= '9' && path < pend)
307	path++, nl++;	523	path++, nl++;
…		…
310	*dstp++ = '0';	526	*dstp++ = '0';
311		527
312	memcpy (dstp, path - nl, nl);	528	memcpy (dstp, path - nl, nl);
313	dstp += nl;	529	dstp += nl;
314	}	530	}
		531	else
		532	dstp++ = path++;
		533	#if 0
315	else	534	else
316	{	535	{
317	STRLEN cl;	536	STRLEN cl;
318	to_utf8_fold (path, dstp, &cl);	537	to_utf8_fold (path, dstp, &cl);
319	dstp += cl;	538	dstp += cl;
320	path += is_utf8_char (path);	539	path += is_utf8_char (path);
321	}	540	}
		541	#endif
322	}	542	}
323		543
324	RETVAL = newSVpvn (dst, dstp - dst);	544	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
325	}	545	}
326	OUTPUT:	546	OUTPUT:
327	RETVAL	547	RETVAL
328		548
329	GdkPixbuf_noinc *	549	GdkPixbuf_noinc *
330	p7_to_pb (int w, int h, guchar *src)	550	p7_to_pb (int w, int h, SV *src_sv)
331	PROTOTYPE: @	551	PROTOTYPE: @
332	CODE:	552	CODE:
333	{	553	{
334	int x, y;	554	int x, y;
335	guchar dst, d;	555	guchar dst, d;
336	int dstr;	556	int dstr;
		557	guchar src = (guchar )SvPVbyte_nolen (src_sv);
337		558
338	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	559	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
339	dst = gdk_pixbuf_get_pixels (RETVAL);	560	dst = gdk_pixbuf_get_pixels (RETVAL);
340	dstr = gdk_pixbuf_get_rowstride (RETVAL);	561	dstr = gdk_pixbuf_get_rowstride (RETVAL);
341		562
…		…
350	}	571	}
351	}	572	}
352	OUTPUT:	573	OUTPUT:
353	RETVAL	574	RETVAL
354		575
		576	#############################################################################
		577
		578	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		579
		580	void
		581	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		582	CODE:
		583	{
		584	int w = gdk_pixbuf_get_width (pb);
		585	int h = gdk_pixbuf_get_height (pb);
		586	int x, y, i;
		587	guchar *dst;
		588	int bpp = gdk_pixbuf_get_n_channels (pb);
		589	guchar *src = gdk_pixbuf_get_pixels (pb);
		590	int sstr = gdk_pixbuf_get_rowstride (pb);
		591
		592	a85_init ();
		593
		594	for (y = 0; y < h; y++)
		595	for (x = 0; x < w; x++)
		596	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		597	a85_push (fp, src [x * bpp + y * sstr + i]);
		598
		599	a85_finish (fp);
		600	}
		601
		602	void
		603	dump_binary (PerlIO fp, GdkPixbuf pb)
		604	CODE:
		605	{
		606	int w = gdk_pixbuf_get_width (pb);
		607	int h = gdk_pixbuf_get_height (pb);
		608	int x, y, i;
		609	guchar *dst;
		610	int bpp = gdk_pixbuf_get_n_channels (pb);
		611	guchar *src = gdk_pixbuf_get_pixels (pb);
		612	int sstr = gdk_pixbuf_get_rowstride (pb);
		613
		614	for (y = 0; y < h; y++)
		615	for (x = 0; x < w; x++)
		616	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		617	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		618	}
		619
		620	#############################################################################
		621
		622	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		623
355	SV *	624	SV *
356	pb_to_p7 (GdkPixbuf *pb)	625	pb_to_hv84 (GdkPixbuf *pb)
357	CODE:	626	CODE:
358	{	627	{
359	int w = gdk_pixbuf_get_width (pb);	628	int w = gdk_pixbuf_get_width (pb);
360	int h = gdk_pixbuf_get_height (pb);	629	int h = gdk_pixbuf_get_height (pb);
361	int x, y;	630	int x, y;
362	guchar *dst;	631	guchar *dst;
363	int bpp = gdk_pixbuf_get_n_channels (pb);	632	int bpp = gdk_pixbuf_get_n_channels (pb);
364	guchar *src = gdk_pixbuf_get_pixels (pb);	633	guchar *src = gdk_pixbuf_get_pixels (pb);
365	int sstr = gdk_pixbuf_get_rowstride (pb);	634	int sstr = gdk_pixbuf_get_rowstride (pb);
366	int Er[IW], Eg[IW], Eb[IW];
367	int seed = 77;
368
369	RETVAL = newSV (w * h);
370	SvPOK_only (RETVAL);
371	SvCUR_set (RETVAL, w * h);
372
373	dst = SvPVX (RETVAL);
374
375	memset (Er, 0, sizeof (int) * IW);
376	memset (Eg, 0, sizeof (int) * IW);
377	memset (Eb, 0, sizeof (int) * IW);
378
379	/* some primitive error distribution + random dithering */
380
381	for (y = 0; y < h; y++)
382	{
383	int er = 0, eg = 0, eb = 0;
384
385	for (x = 0; x < w; x++)
386	{
387	int r, g, b;
388	guchar p = src + x bpp + y * sstr;
389
390	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
391	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
392	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
393
394	r = r > 7 ? 7 : r < 0 ? 0 : r;
395	g = g > 7 ? 7 : g < 0 ? 0 : g;
396	b = b > 3 ? 3 : b < 0 ? 0 : b;
397
398	er += p[0] - (r * 255 + 4) / 7;
399	eg += p[1] - (g * 255 + 4) / 7;
400	eb += p[2] - (b * 255 + 2) / 3;
401
402	Er[x] = er >> 1; er -= (er + 1) >> 1;
403	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
404	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
405
406	*dst++ = r << 5 \| g << 2 \| b;
407	}
408	}
409	}
410	OUTPUT:
411	RETVAL
412
413	#############################################################################
414
415	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
416
417	void
418	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
419	CODE:
420	{
421	int w = gdk_pixbuf_get_width (pb);
422	int h = gdk_pixbuf_get_height (pb);
423	int x, y, i;
424	guchar *dst;
425	int bpp = gdk_pixbuf_get_n_channels (pb);
426	guchar *src = gdk_pixbuf_get_pixels (pb);
427	int sstr = gdk_pixbuf_get_rowstride (pb);
428
429	a85_init ();
430
431	for (y = 0; y < h; y++)
432	for (x = 0; x < w; x++)
433	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
434	a85_push (fp, src [x * bpp + y * sstr + i]);
435
436	a85_finish (fp);
437	}
438
439	void
440	dump_binary (PerlIO fp, GdkPixbuf pb)
441	CODE:
442	{
443	int w = gdk_pixbuf_get_width (pb);
444	int h = gdk_pixbuf_get_height (pb);
445	int x, y, i;
446	guchar *dst;
447	int bpp = gdk_pixbuf_get_n_channels (pb);
448	guchar *src = gdk_pixbuf_get_pixels (pb);
449	int sstr = gdk_pixbuf_get_rowstride (pb);
450
451	for (y = 0; y < h; y++)
452	for (x = 0; x < w; x++)
453	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
454	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
455	}
456
457	#############################################################################
458
459	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
460
461	SV *
462	pb_to_hv84 (GdkPixbuf *pb)
463	CODE:
464	{
465	int w = gdk_pixbuf_get_width (pb);
466	int h = gdk_pixbuf_get_height (pb);
467	int x, y;
468	guchar *dst;
469	int bpp = gdk_pixbuf_get_n_channels (pb);
470	guchar *src = gdk_pixbuf_get_pixels (pb);
471	int sstr = gdk_pixbuf_get_rowstride (pb);
472		635
473	RETVAL = newSV (6 * 8 * 12 / 8);	636	RETVAL = newSV (6 * 8 * 12 / 8);
474	SvPOK_only (RETVAL);	637	SvPOK_only (RETVAL);
475	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	638	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
476		639
477	dst = SvPVX (RETVAL);	640	dst = (guchar *)SvPVX (RETVAL);
478		641
479	/* some primitive error distribution + random dithering */	642	/* some primitive error distribution + random dithering */
480		643
481	for (y = 0; y < h; y++)	644	for (y = 0; y < h; y++)
482	{	645	{
…		…
545	#############################################################################	708	#############################################################################
546		709
547	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	710	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
548		711
549	SV *	712	SV *
550	make_histograms (SV *ar)	713	extract_features (SV *ar)
551	CODE:	714	CODE:
552	{	715	{
553	int i;	716	int i;
554	AV av, result;	717	AV av, result;
555		718
556	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	719	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
557	croak ("Not an array ref as first argument to make_histogram");	720	croak ("Not an array ref as first argument to extract_features");
558		721
559	av = (AV *) SvRV (ar);	722	av = (AV *) SvRV (ar);
560	result = newAV ();	723	result = newAV ();
561		724
562	for (i = 0; i <= av_len (av); ++i)	725	for (i = 0; i <= av_len (av); ++i)
563	{	726	{
564	const int HISTSIZE = 64;
565
566	int j;
567	SV sv = av_fetch (av, i, 1);	727	SV sv = av_fetch (av, i, 1);
568	STRLEN len;
569	char *buf = SvPVbyte (sv, len);
570
571	int tmphist[HISTSIZE];
572	float *hist;
573
574	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	728	SV histsv = newSV (9 sizeof (float) + 1);
		729
575	SvPOK_on (histsv);	730	SvPOK_on (histsv);
576	SvCUR_set (histsv, HISTSIZE * sizeof (float));	731	SvCUR_set (histsv, 9 * sizeof (float));
577	hist = (float *)SvPVX (histsv);	732	float hist = (float )SvPVX (histsv);
578		733
579	Zero (tmphist, sizeof (tmphist), char);	734	struct feature f_h, f_s, f_v;
		735	feature_init (&f_h);
		736	feature_init (&f_s);
		737	feature_init (&f_v);
580		738
581	for (j = len; j--; )
582	{
583	unsigned int idx
584	= ((*buf & 0xc0) >> 2)
585	\| ((*buf & 0x18) >> 1)
586	\| (*buf & 0x03);
587
588	++tmphist[idx];
589	++buf;
590	}
591		739	{
592	for (j = 0; j < HISTSIZE; ++j)	740	STRLEN len;
593	hist[j] = (float)tmphist[j] / (len + 1e-30);	741	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		742	while (len >= 3)
		743	{
		744	unsigned int r, g, b, h, s, v;
		745	r = buf++; g = buf++; b = *buf++;
		746	rgb_to_hsv (r, g, b, &h, &s, &v);
		747
		748	feature_update_pass_1 (&f_h, h);
		749	feature_update_pass_1 (&f_s, s);
		750	feature_update_pass_1 (&f_v, v);
		751
		752	len -= 3;
		753	}
		754
		755	feature_finish_pass_1 (&f_h);
		756	feature_finish_pass_1 (&f_s);
		757	feature_finish_pass_1 (&f_v);
		758	}
		759
		760	{
		761	STRLEN len;
		762	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		763	while (len >= 3)
		764	{
		765	unsigned int r, g, b, h, s, v;
		766	r = buf++; g = buf++; b = *buf++;
		767	rgb_to_hsv (r, g, b, &h, &s, &v);
		768
		769	feature_update_pass_2 (&f_h, h);
		770	feature_update_pass_2 (&f_s, s);
		771	feature_update_pass_2 (&f_v, v);
		772
		773	len -= 3;
		774	}
		775
		776	feature_finish_pass_2 (&f_h);
		777	feature_finish_pass_2 (&f_s);
		778	feature_finish_pass_2 (&f_v);
		779	}
		780
		781	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		782	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		783	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
594		784
595	av_push (result, histsv);	785	av_push (result, histsv);
596	}	786	}
597		787
598	RETVAL = newRV_noinc ((SV *)result);	788	RETVAL = newRV_noinc ((SV *)result);
599	}	789	}
600	OUTPUT:	790	OUTPUT:
601	RETVAL	791	RETVAL
602		792
603

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Comparing CV/CV.xs (file contents): Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs. Revision 1.48 by root, Wed May 24 05:00:57 2017 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs.
Revision 1.48 by root, Wed May 24 05:00:57 2017 UTC