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

Comparing CV/CV.xs (file contents):
Revision 1.26 by root, Sun Aug 21 02:18:30 2005 UTC vs.
Revision 1.51 by root, Sat Dec 23 04:11:49 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>
9	#include <glib.h>	12	#include <glib.h>
10	#include <gtk/gtk.h>	13	#include <gtk/gtk.h>
		14	#include <gdk/gdkx.h>
11	#include <gdk-pixbuf/gdk-pixbuf.h>	15	#include <gdk-pixbuf/gdk-pixbuf.h>
12		16
13	#include <gperl.h>	17	#include <gperl.h>
14	#include <gtk2perl.h>	18	#include <gtk2perl.h>
15		19
		20	#include <assert.h>
		21
		22	#if WEBP
		23	#include <webp/decode.h>
		24	#endif
		25
		26	#include "perlmulticore.h"
		27
16	#define IW 80 /* MUST match Schnauer.pm! */	28	#define IW 80 /* MUST match Schnauzer.pm! */
17	#define IH 60 /* MUST match Schnauer.pm! */	29	#define IH 60 /* MUST match Schnauzer.pm! */
18		30
19	#define RAND (seed = (seed + 7141) * 54773 % 134456)	31	#define RAND (seed = (seed + 7141) * 54773 % 134456)
20		32
21	#define LINELENGTH 240	33	#define LINELENGTH 240
22		34
23	#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 */
24		40
25	struct jpg_err_mgr	41	struct jpg_err_mgr
26	{	42	{
27	struct jpeg_error_mgr err;	43	struct jpeg_error_mgr err;
28	jmp_buf setjmp_buffer;	44	jmp_buf setjmp_buffer;
29	};	45	};
30		46
31	static void	47	static void
32	cv_error_exit (j_common_ptr cinfo)	48	cv_error_exit (j_common_ptr cinfo)
33	{	49	{
		50	cinfo->err->output_message (cinfo);
34	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	51	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
35	}	52	}
36		53
37	static void	54	static void
38	cv_error_output (j_common_ptr cinfo)	55	cv_error_output (j_common_ptr cinfo)
39	{	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);
40	return;	62	return;
41	}	63	}
42		64
43	static void	65	static void
44	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,
…		…
65		87
66	*h &= 255;	88	*h &= 255;
67	}	89	}
68	}	90	}
69		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
70	static guint32 a85_val;	147	static guint32 a85_val;
71	static guint a85_cnt;	148	static guint a85_cnt;
72	static guchar a85_buf[LINELENGTH], *a85_ptr;	149	static guchar a85_buf[LINELENGTH], *a85_ptr;
73		150
74	static void	151	static void
…		…
86	if (!--a85_cnt)	163	if (!--a85_cnt)
87	{	164	{
88	a85_cnt = 4;	165	a85_cnt = 4;
89	if (a85_val)	166	if (a85_val)
90	{	167	{
91	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	168	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
92	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	169	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
93	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	170	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
94	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
95	a85_ptr[0] = (a85_val ) + 33;	172	a85_ptr[0] = (a85_val ) + 33;
96		173
97	a85_ptr += 5;	174	a85_ptr += 5;
98	}	175	}
…		…
126		203
127	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	204	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128		205
129	PROTOTYPES: ENABLE	206	PROTOTYPES: ENABLE
130		207
		208	# missing function in perl. really :)
		209	int
		210	common_prefix_length (a, b)
		211	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		212	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		213	CODE:
		214	RETVAL = 0;
		215
		216	while (a == b && *a)
		217	{
		218	RETVAL += (*a & 0xc0) != 0x80;
		219	a++, b++;
		220	}
		221
		222	OUTPUT:
		223	RETVAL
		224
		225	const char *
		226	magic (SV *path_or_data)
		227	ALIAS:
		228	magic = 0
		229	magic_mime = 1
		230	magic_buffer = 2
		231	magic_buffer_mime = 3
		232	CODE:
		233	{
		234	STRLEN len;
		235	char *data = SvPVbyte (path_or_data, len);
		236
		237	perlinterp_release ();
		238
		239	if (!magic_cookie[0])
		240	{
		241	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		242	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME);
		243	}
		244
		245	RETVAL = ix & 2
		246	? magic_buffer (magic_cookie[ix], data, len)
		247	: magic_file (magic_cookie[ix], data);
		248
		249	perlinterp_acquire ();
		250	}
		251	OUTPUT:
		252	RETVAL
		253
131	# 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);
132		260
133	gboolean	261	gboolean
134	gdk_net_wm_supports (GdkAtom property)	262	gdk_net_wm_supports (GdkAtom property)
135	CODE:	263	CODE:
136	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	264	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
142	RETVAL	270	RETVAL
143		271
144	GdkPixbuf_noinc *	272	GdkPixbuf_noinc *
145	dealpha_expose (GdkPixbuf *pb)	273	dealpha_expose (GdkPixbuf *pb)
146	CODE:	274	CODE:
147	{	275	perlinterp_release ();
148	int w = gdk_pixbuf_get_width (pb);
149	int h = gdk_pixbuf_get_height (pb);
150	fprintf (stderr, "new %d %d\n", w, h);
151	int bpp = gdk_pixbuf_get_n_channels (pb);
152	int x, y, i;
153	guchar src = gdk_pixbuf_get_pixels (pb), dst;
154	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
155
156	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
157
158	dst = gdk_pixbuf_get_pixels (RETVAL);
159	dstr = gdk_pixbuf_get_rowstride (RETVAL);
160
161	for (x = 0; x < w; x++)
162	for (y = 0; y < h; y++)
163	for (i = 0; i < 3; i++)
164	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
165	}
166	OUTPUT:
167	RETVAL
168
169	GdkPixbuf_noinc *
170	transpose (GdkPixbuf *pb)
171	CODE:
172	{	276	{
173	int w = gdk_pixbuf_get_width (pb);	277	int w = gdk_pixbuf_get_width (pb);
174	int h = gdk_pixbuf_get_height (pb);	278	int h = gdk_pixbuf_get_height (pb);
175	int bpp = gdk_pixbuf_get_n_channels (pb);	279	int bpp = gdk_pixbuf_get_n_channels (pb);
176	int x, y, i;	280	int x, y, i;
177	guchar src = gdk_pixbuf_get_pixels (pb), dst;	281	guchar src = gdk_pixbuf_get_pixels (pb), dst;
178	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	282	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
179		283
180	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	284	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
181		285
182	dst = gdk_pixbuf_get_pixels (RETVAL);	286	dst = gdk_pixbuf_get_pixels (RETVAL);
183	dstr = gdk_pixbuf_get_rowstride (RETVAL);	287	dstr = gdk_pixbuf_get_rowstride (RETVAL);
184		288
185	for (y = 0; y < h; y++)
186	for (x = 0; x < w; x++)	289	for (x = 0; x < w; x++)
		290	for (y = 0; y < h; y++)
187	for (i = 0; i < bpp; i++)	291	for (i = 0; i < 3; i++)
188	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	292	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
189	}	293	}
		294	perlinterp_acquire ();
190	OUTPUT:	295	OUTPUT:
191	RETVAL	296	RETVAL
192		297
193	GdkPixbuf_noinc *	298	GdkPixbuf_noinc *
194	flop (GdkPixbuf *pb)	299	rotate (GdkPixbuf *pb, int angle)
195	CODE:	300	CODE:
196	{	301	perlinterp_release ();
197	int w = gdk_pixbuf_get_width (pb);	302	if (angle < 0)
198	int h = gdk_pixbuf_get_height (pb);	303	angle += 360;
199	int bpp = gdk_pixbuf_get_n_channels (pb);	304	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
200	int x, y, i;	305	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
201	guchar src = gdk_pixbuf_get_pixels (pb), dst;	306	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
202	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	307	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
203		308	: angle);
204	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	309	perlinterp_acquire ();
205
206	dst = gdk_pixbuf_get_pixels (RETVAL);
207	dstr = gdk_pixbuf_get_rowstride (RETVAL);
208
209	for (y = 0; y < h; y++)
210	for (x = 0; x < w; x++)
211	for (i = 0; i < bpp; i++)
212	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
213	}
214	OUTPUT:	310	OUTPUT:
215	RETVAL	311	RETVAL
216		312
217	GdkPixbuf_noinc *	313	GdkPixbuf_noinc *
218	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)
219	CODE:	391	CODE:
220	{	392	{
221	struct jpeg_decompress_struct cinfo;	393	struct jpeg_decompress_struct cinfo;
222	struct jpg_err_mgr jerr;	394	struct jpg_err_mgr jerr;
223	guchar *data;	395	guchar *data;
224	int rs;	396	int rs;
225	FILE *fp;	397	FILE *fp;
226	volatile GdkPixbuf *pb = 0;	398	volatile GdkPixbuf *pb = 0;
227	gchar *filename;
228		399
229	RETVAL = 0;	400	RETVAL = 0;
230		401
231	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
232	fp = fopen (filename, "rb");	402	fp = fopen (SvPVbyte_nolen (path), "rb");
233	g_free (filename);
234		403
235	if (!fp)	404	if (!fp)
236	XSRETURN_UNDEF;	405	XSRETURN_UNDEF;
237		406
		407	perlinterp_release ();
		408
238	cinfo.err = jpeg_std_error (&jerr.err);	409	cinfo.err = jpeg_std_error (&jerr.err);
239		410
240	jerr.err.error_exit = cv_error_exit;	411	jerr.err.error_exit = cv_error_exit;
241	jerr.err.output_message = cv_error_output;	412	jerr.err.output_message = cv_error_output;
242		413
…		…
246	jpeg_destroy_decompress (&cinfo);	417	jpeg_destroy_decompress (&cinfo);
247		418
248	if (pb)	419	if (pb)
249	g_object_unref ((gpointer)pb);	420	g_object_unref ((gpointer)pb);
250		421
		422	perlinterp_acquire ();
251	XSRETURN_UNDEF;	423	XSRETURN_UNDEF;
252	}	424	}
253		425
254	jpeg_create_decompress (&cinfo);	426	jpeg_create_decompress (&cinfo);
255		427
…		…
271	{	443	{
272	cinfo.dct_method = JDCT_FASTEST;	444	cinfo.dct_method = JDCT_FASTEST;
273	cinfo.do_fancy_upsampling = FALSE;	445	cinfo.do_fancy_upsampling = FALSE;
274		446
275	while (cinfo.scale_denom < 8	447	while (cinfo.scale_denom < 8
276	&& cinfo.output_width >= IW*4	448	&& cinfo.output_width >= iw*4
277	&& cinfo.output_height >= IH*4)	449	&& cinfo.output_height >= ih*4)
278	{	450	{
279	cinfo.scale_denom <<= 1;	451	cinfo.scale_denom <<= 1;
280	jpeg_calc_output_dimensions (&cinfo);	452	jpeg_calc_output_dimensions (&cinfo);
281	}	453	}
282	}	454	}
283		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
284	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);
285	if (!RETVAL)	466	if (!RETVAL)
286	longjmp (jerr.setjmp_buffer, 2);	467	longjmp (jerr.setjmp_buffer, 2);
287		468
288	data = gdk_pixbuf_get_pixels (RETVAL);	469	data = gdk_pixbuf_get_pixels (RETVAL);
289	rs = gdk_pixbuf_get_rowstride (RETVAL);	470	rs = gdk_pixbuf_get_rowstride (RETVAL);
290
291	if (cinfo.output_components != 3)
292	longjmp (jerr.setjmp_buffer, 3);
293		471
294	jpeg_start_decompress (&cinfo);	472	jpeg_start_decompress (&cinfo);
295		473
296	while (cinfo.output_scanline < cinfo.output_height)	474	while (cinfo.output_scanline < cinfo.output_height)
297	{	475	{
…		…
304	rp [3] = (guchar *)rp [2] + rs;	482	rp [3] = (guchar *)rp [2] + rs;
305		483
306	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	484	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
307	}	485	}
308		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
309	jpeg_finish_decompress (&cinfo);	516	jpeg_finish_decompress (&cinfo);
310	fclose (fp);	517	fclose (fp);
311	jpeg_destroy_decompress (&cinfo);	518	jpeg_destroy_decompress (&cinfo);
		519	perlinterp_acquire ();
312	}	520	}
313	OUTPUT:	521	OUTPUT:
314	RETVAL	522	RETVAL
315		523
		524	void
		525	compare (GdkPixbuf a, GdkPixbuf b)
		526	PPCODE:
		527	perlinterp_release ();
		528	{
		529	int w = gdk_pixbuf_get_width (a);
		530	int h = gdk_pixbuf_get_height (a);
		531
		532	int sa = gdk_pixbuf_get_rowstride (a);
		533	int sb = gdk_pixbuf_get_rowstride (b);
		534
		535	guchar *pa = gdk_pixbuf_get_pixels (a);
		536	guchar *pb = gdk_pixbuf_get_pixels (b);
		537
		538	int x, y;
		539
		540	assert (w == gdk_pixbuf_get_width (b));
		541	assert (h == gdk_pixbuf_get_height (b));
		542
		543	assert (gdk_pixbuf_get_n_channels (a) == 3);
		544	assert (gdk_pixbuf_get_n_channels (b) == 3);
		545
		546	double diff = 0.;
		547	int peak = 0;
		548
		549	if (w && h)
		550	for (y = 0; y < h; y++)
		551	{
		552	guchar pa_ = pa + y sa;
		553	guchar pb_ = pb + y sb;
		554
		555	for (x = 0; x < w; x++)
		556	{
		557	int d;
		558
		559	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));
		561	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		562	}
		563	}
		564
		565	perlinterp_acquire ();
		566
		567	EXTEND (SP, 2);
		568	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		569	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		570	}
		571
316	#############################################################################	572	#############################################################################
317		573
318	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	574	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		575
		576	# currently only works for filenames (octet strings)
319		577
320	SV *	578	SV *
321	foldcase (SV *pathsv)	579	foldcase (SV *pathsv)
322	PROTOTYPE: $	580	PROTOTYPE: $
323	CODE:	581	CODE:
324	{	582	{
325	STRLEN plen;	583	STRLEN plen;
326	U8 path = (U8 )SvPVutf8 (pathsv, plen);	584	U8 path = (U8 )SvPV (pathsv, plen);
327	U8 *pend = path + plen;	585	U8 *pend = path + plen;
328	U8 dst [plen * 6 * 3], *dstp = dst;	586	U8 dst [plen * 6 * 3], *dstp = dst;
329		587
330	while (path < pend)	588	while (path < pend)
331	{	589	{
332	U8 ch = *path;	590	U8 ch = *path;
333		591
334	if (ch >= 'a' && ch <= 'z')	592	if (ch >= 'a' && ch <= 'z')
335	dstp++ = path++;	593	dstp++ = path++;
		594	else if (ch >= 'A' && ch <= 'Z')
		595	dstp++ = path++ + ('a' - 'A');
336	else if (ch >= '0' && ch <= '9')	596	else if (ch >= '0' && ch <= '9')
337	{	597	{
338	STRLEN el, nl = 0;	598	STRLEN el, nl = 0;
339	while (path >= '0' && path <= '9' && path < pend)	599	while (path >= '0' && path <= '9' && path < pend)
340	path++, nl++;	600	path++, nl++;
…		…
343	*dstp++ = '0';	603	*dstp++ = '0';
344		604
345	memcpy (dstp, path - nl, nl);	605	memcpy (dstp, path - nl, nl);
346	dstp += nl;	606	dstp += nl;
347	}	607	}
		608	else
		609	dstp++ = path++;
		610	#if 0
348	else	611	else
349	{	612	{
350	STRLEN cl;	613	STRLEN cl;
351	to_utf8_fold (path, dstp, &cl);	614	to_utf8_fold (path, dstp, &cl);
352	dstp += cl;	615	dstp += cl;
353	path += is_utf8_char (path);	616	path += is_utf8_char (path);
354	}	617	}
		618	#endif
355	}	619	}
356		620
357	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	621	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
358	}	622	}
359	OUTPUT:	623	OUTPUT:
…		…
384	}	648	}
385	}	649	}
386	OUTPUT:	650	OUTPUT:
387	RETVAL	651	RETVAL
388		652
		653	#############################################################################
		654
		655	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		656
		657	void
		658	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		659	CODE:
		660	{
		661	int w = gdk_pixbuf_get_width (pb);
		662	int h = gdk_pixbuf_get_height (pb);
		663	int x, y, i;
		664	guchar *dst;
		665	int bpp = gdk_pixbuf_get_n_channels (pb);
		666	guchar *src = gdk_pixbuf_get_pixels (pb);
		667	int sstr = gdk_pixbuf_get_rowstride (pb);
		668
		669	a85_init ();
		670
		671	for (y = 0; y < h; y++)
		672	for (x = 0; x < w; x++)
		673	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		674	a85_push (fp, src [x * bpp + y * sstr + i]);
		675
		676	a85_finish (fp);
		677	}
		678
		679	void
		680	dump_binary (PerlIO fp, GdkPixbuf pb)
		681	CODE:
		682	{
		683	int w = gdk_pixbuf_get_width (pb);
		684	int h = gdk_pixbuf_get_height (pb);
		685	int x, y, i;
		686	guchar *dst;
		687	int bpp = gdk_pixbuf_get_n_channels (pb);
		688	guchar *src = gdk_pixbuf_get_pixels (pb);
		689	int sstr = gdk_pixbuf_get_rowstride (pb);
		690
		691	for (y = 0; y < h; y++)
		692	for (x = 0; x < w; x++)
		693	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		694	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		695	}
		696
		697	#############################################################################
		698
		699	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		700
389	SV *	701	SV *
390	pb_to_p7 (GdkPixbuf *pb)	702	pb_to_hv84 (GdkPixbuf *pb)
391	CODE:	703	CODE:
392	{	704	{
393	int w = gdk_pixbuf_get_width (pb);	705	int w = gdk_pixbuf_get_width (pb);
394	int h = gdk_pixbuf_get_height (pb);	706	int h = gdk_pixbuf_get_height (pb);
395	int x, y;	707	int x, y;
396	guchar *dst;	708	guchar *dst;
397	int bpp = gdk_pixbuf_get_n_channels (pb);	709	int bpp = gdk_pixbuf_get_n_channels (pb);
398	guchar *src = gdk_pixbuf_get_pixels (pb);	710	guchar *src = gdk_pixbuf_get_pixels (pb);
399	int sstr = gdk_pixbuf_get_rowstride (pb);	711	int sstr = gdk_pixbuf_get_rowstride (pb);
400	int Er[IW], Eg[IW], Eb[IW];
401	int seed = 77;
402
403	RETVAL = newSV (w * h);
404	SvPOK_only (RETVAL);
405	SvCUR_set (RETVAL, w * h);
406
407	dst = (guchar *)SvPVX (RETVAL);
408
409	memset (Er, 0, sizeof (int) * IW);
410	memset (Eg, 0, sizeof (int) * IW);
411	memset (Eb, 0, sizeof (int) * IW);
412
413	/* some primitive error distribution + random dithering */
414
415	for (y = 0; y < h; y++)
416	{
417	int er = 0, eg = 0, eb = 0;
418
419	for (x = 0; x < w; x++)
420	{
421	int r, g, b;
422	guchar p = src + x bpp + y * sstr;
423
424	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
425	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
426	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
427
428	r = r > 7 ? 7 : r < 0 ? 0 : r;
429	g = g > 7 ? 7 : g < 0 ? 0 : g;
430	b = b > 3 ? 3 : b < 0 ? 0 : b;
431
432	er += p[0] - (r * 255 + 4) / 7;
433	eg += p[1] - (g * 255 + 4) / 7;
434	eb += p[2] - (b * 255 + 2) / 3;
435
436	Er[x] = er >> 1; er -= (er + 1) >> 1;
437	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
438	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
439
440	*dst++ = r << 5 \| g << 2 \| b;
441	}
442	}
443	}
444	OUTPUT:
445	RETVAL
446
447	#############################################################################
448
449	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
450
451	void
452	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
453	CODE:
454	{
455	int w = gdk_pixbuf_get_width (pb);
456	int h = gdk_pixbuf_get_height (pb);
457	int x, y, i;
458	guchar *dst;
459	int bpp = gdk_pixbuf_get_n_channels (pb);
460	guchar *src = gdk_pixbuf_get_pixels (pb);
461	int sstr = gdk_pixbuf_get_rowstride (pb);
462
463	a85_init ();
464
465	for (y = 0; y < h; y++)
466	for (x = 0; x < w; x++)
467	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
468	a85_push (fp, src [x * bpp + y * sstr + i]);
469
470	a85_finish (fp);
471	}
472
473	void
474	dump_binary (PerlIO fp, GdkPixbuf pb)
475	CODE:
476	{
477	int w = gdk_pixbuf_get_width (pb);
478	int h = gdk_pixbuf_get_height (pb);
479	int x, y, i;
480	guchar *dst;
481	int bpp = gdk_pixbuf_get_n_channels (pb);
482	guchar *src = gdk_pixbuf_get_pixels (pb);
483	int sstr = gdk_pixbuf_get_rowstride (pb);
484
485	for (y = 0; y < h; y++)
486	for (x = 0; x < w; x++)
487	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
488	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
489	}
490
491	#############################################################################
492
493	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
494
495	SV *
496	pb_to_hv84 (GdkPixbuf *pb)
497	CODE:
498	{
499	int w = gdk_pixbuf_get_width (pb);
500	int h = gdk_pixbuf_get_height (pb);
501	int x, y;
502	guchar *dst;
503	int bpp = gdk_pixbuf_get_n_channels (pb);
504	guchar *src = gdk_pixbuf_get_pixels (pb);
505	int sstr = gdk_pixbuf_get_rowstride (pb);
506		712
507	RETVAL = newSV (6 * 8 * 12 / 8);	713	RETVAL = newSV (6 * 8 * 12 / 8);
508	SvPOK_only (RETVAL);	714	SvPOK_only (RETVAL);
509	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	715	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
510		716
…		…
579	#############################################################################	785	#############################################################################
580		786
581	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	787	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
582		788
583	SV *	789	SV *
584	make_histograms (SV *ar)	790	extract_features (SV *ar)
585	CODE:	791	CODE:
586	{	792	{
587	int i;	793	int i;
588	AV av, result;	794	AV av, result;
589		795
590	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	796	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
591	croak ("Not an array ref as first argument to make_histogram");	797	croak ("Not an array ref as first argument to extract_features");
592		798
593	av = (AV *) SvRV (ar);	799	av = (AV *) SvRV (ar);
594	result = newAV ();	800	result = newAV ();
595		801
596	for (i = 0; i <= av_len (av); ++i)	802	for (i = 0; i <= av_len (av); ++i)
597	{	803	{
598	const int HISTSIZE = 64;
599
600	int j;
601	SV sv = av_fetch (av, i, 1);	804	SV sv = av_fetch (av, i, 1);
602	STRLEN len;
603	char *buf = SvPVbyte (sv, len);
604
605	int tmphist[HISTSIZE];
606	float *hist;
607
608	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	805	SV histsv = newSV (9 sizeof (float) + 1);
		806
609	SvPOK_on (histsv);	807	SvPOK_on (histsv);
610	SvCUR_set (histsv, HISTSIZE * sizeof (float));	808	SvCUR_set (histsv, 9 * sizeof (float));
611	hist = (float *)SvPVX (histsv);	809	float hist = (float )SvPVX (histsv);
612		810
613	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);
614		815
615	for (j = len; j--; )
616	{
617	unsigned int idx
618	= ((*buf & 0xc0) >> 2)
619	\| ((*buf & 0x18) >> 1)
620	\| (*buf & 0x03);
621
622	++tmphist[idx];
623	++buf;
624	}
625		816	{
626	for (j = 0; j < HISTSIZE; ++j)	817	STRLEN len;
627	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;
628		861
629	av_push (result, histsv);	862	av_push (result, histsv);
630	}	863	}
631		864
632	RETVAL = newRV_noinc ((SV *)result);	865	RETVAL = newRV_noinc ((SV *)result);
633	}	866	}
634	OUTPUT:	867	OUTPUT:
635	RETVAL	868	RETVAL
636		869
637

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Comparing CV/CV.xs (file contents): Revision 1.26 by root, Sun Aug 21 02:18:30 2005 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 1.26 by root, Sun Aug 21 02:18:30 2005 UTC vs.
Revision 1.51 by root, Sat Dec 23 04:11:49 2017 UTC