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

Comparing CV/CV.xs (file contents):
Revision 1.31 by root, Wed Feb 15 08:08:37 2006 UTC vs.
Revision 1.55 by root, Sat Dec 23 08:05:32 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>
7		8
8	#include <magic.h>	9	#include <magic.h>
9		10
10	#include <jpeglib.h>	11	#include <jpeglib.h>
		12	#include <jerror.h>
		13
11	#include <glib.h>	14	#include <glib.h>
12	#include <gtk/gtk.h>	15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
13	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
14		18
15	#include <gperl.h>	19	#include <gperl.h>
16	#include <gtk2perl.h>	20	#include <gtk2perl.h>
17		21
		22	#include <assert.h>
		23
		24	#if WEBP
		25	#include <webp/demux.h>
		26	#include <webp/decode.h>
		27	#endif
		28
		29	#include "perlmulticore.h"
		30
18	#define IW 80 /* MUST match Schnauer.pm! */	31	#define IW 80 /* MUST match Schnauzer.pm! */
19	#define IH 60 /* MUST match Schnauer.pm! */	32	#define IH 60 /* MUST match Schnauzer.pm! */
20		33
21	#define RAND (seed = (seed + 7141) * 54773 % 134456)	34	#define RAND (seed = (seed + 7141) * 54773 % 134456)
22		35
23	#define LINELENGTH 240	36	#define LINELENGTH 240
24		37
25	#define ELLIPSIS "\xe2\x80\xa6"	38	#define ELLIPSIS "\xe2\x80\xa6"
		39
		40	typedef char *octet_string;
		41
		42	static magic_t magic_cookie[2]; /* !mime, mime */
26		43
27	struct jpg_err_mgr	44	struct jpg_err_mgr
28	{	45	{
29	struct jpeg_error_mgr err;	46	struct jpeg_error_mgr err;
30	jmp_buf setjmp_buffer;	47	jmp_buf setjmp_buffer;
31	};	48	};
32		49
33	static void	50	static void
34	cv_error_exit (j_common_ptr cinfo)	51	cv_error_exit (j_common_ptr cinfo)
35	{	52	{
		53	cinfo->err->output_message (cinfo);
36	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	54	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
37	}	55	}
38		56
39	static void	57	static void
40	cv_error_output (j_common_ptr cinfo)	58	cv_error_output (j_common_ptr cinfo)
41	{	59	{
		60	char msg[JMSG_LENGTH_MAX];
		61
		62	cinfo->err->format_message (cinfo, msg);
		63
		64	fprintf (stderr, "JPEG decoding error: %s\n", msg);
42	return;	65	return;
43	}	66	}
44		67
45	static void	68	static void
46	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,	69	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
…		…
67		90
68	*h &= 255;	91	*h &= 255;
69	}	92	}
70	}	93	}
71		94
		95	struct feature {
		96	float v1, v2, v3; // mean, square, cube
		97	int n;
		98	};
		99
		100	static void
		101	feature_init (struct feature *f)
		102	{
		103	f->v1 = 0.;
		104	f->v2 = 0.;
		105	f->v3 = 0.;
		106	f->n = 0;
		107	}
		108
		109	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		110	// elmex ist schuld.
		111	static void
		112	feature_update_pass_1 (struct feature *f, unsigned int v)
		113	{
		114	f->v1 += v;
		115	f->n += 1;
		116	}
		117
		118	static void
		119	feature_finish_pass_1 (struct feature *f)
		120	{
		121	if (f->n < 1)
		122	return;
		123
		124	f->v1 /= f->n;
		125	}
		126
		127	static void
		128	feature_update_pass_2 (struct feature *f, unsigned int v)
		129	{
		130	float d = v - f->v1;
		131
		132	f->v2 += d * d;
		133	f->v3 += d * d * d;
		134	}
		135
		136	static void
		137	feature_finish_pass_2 (struct feature *f)
		138	{
		139	if (f->n < 1)
		140	return;
		141
		142	f->v2 /= f->n;
		143	f->v3 /= f->n;
		144
		145	f->v1 /= 255.;
		146	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		147	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		148	}
		149
72	static guint32 a85_val;	150	static guint32 a85_val;
73	static guint a85_cnt;	151	static guint a85_cnt;
74	static guchar a85_buf[LINELENGTH], *a85_ptr;	152	static guchar a85_buf[LINELENGTH], *a85_ptr;
75		153
76	static void	154	static void
…		…
88	if (!--a85_cnt)	166	if (!--a85_cnt)
89	{	167	{
90	a85_cnt = 4;	168	a85_cnt = 4;
91	if (a85_val)	169	if (a85_val)
92	{	170	{
93	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
94	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	172	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
95	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	173	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
96	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
97	a85_ptr[0] = (a85_val ) + 33;	175	a85_ptr[0] = (a85_val ) + 33;
98		176
99	a85_ptr += 5;	177	a85_ptr += 5;
100	}	178	}
…		…
124	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	202	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
125	}	203	}
126		204
127	/////////////////////////////////////////////////////////////////////////////	205	/////////////////////////////////////////////////////////////////////////////
128		206
		207	static void cv_ms_init (j_decompress_ptr cinfo)
		208	{
		209	}
		210
		211	static void cv_ms_term (j_decompress_ptr cinfo)
		212	{
		213	}
		214
		215	static boolean cv_ms_fill (j_decompress_ptr cinfo)
		216	{
		217	ERREXIT (cinfo, JERR_INPUT_EMPTY);
		218
		219	return TRUE;
		220	}
		221
		222	static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
		223	{
		224	if (num_bytes > 0)
		225	{
		226	struct jpeg_source_mgr src = (struct jpeg_source_mgr )cinfo->src;
		227
		228	src->next_input_byte += num_bytes;
		229	src->bytes_in_buffer -= num_bytes;
		230	}
		231	}
		232
		233	static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
		234	{
		235	struct jpeg_source_mgr *src;
		236
		237	if (!cinfo->src)
		238	cinfo->src = (struct jpeg_source_mgr *)
		239	(*cinfo->mem->alloc_small) (
		240	(j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
		241	);
		242
		243	src = (struct jpeg_source_mgr *)cinfo->src;
		244	src->init_source = cv_ms_init;
		245	src->fill_input_buffer = cv_ms_fill;
		246	src->skip_input_data = cv_ms_skip;
		247	src->resync_to_restart = jpeg_resync_to_restart;
		248	src->term_source = cv_ms_term;
		249	src->next_input_byte = (JOCTET *)buf;
		250	src->bytes_in_buffer = buflen;
		251	}
		252
		253	/////////////////////////////////////////////////////////////////////////////
		254
129	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	255	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
130		256
131	PROTOTYPES: ENABLE	257	PROTOTYPES: ENABLE
132		258
133	# missing function in perl. really :)	259	# missing function in perl. really :)
…		…
146		272
147	OUTPUT:	273	OUTPUT:
148	RETVAL	274	RETVAL
149		275
150	const char *	276	const char *
151	magic (const char *path)	277	magic (SV *path_or_data)
		278	ALIAS:
		279	magic = 0
		280	magic_mime = 1
		281	magic_buffer = 2
		282	magic_buffer_mime = 3
152	CODE:	283	CODE:
153	{	284	{
154	static magic_t cookie;	285	STRLEN len;
		286	char *data = SvPVbyte (path_or_data, len);
155		287
156	if (!cookie)	288	if (!magic_cookie[0])
		289	{
		290	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		291	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		292	magic_load (magic_cookie[0], 0);
		293	magic_load (magic_cookie[1], 0);
157	{	294	}
158	cookie = magic_open (MAGIC_MIME);
159		295
160	if (cookie)	296	perlinterp_release ();
161	magic_load (cookie, 0);
162	else
163	XSRETURN_UNDEF;
164	}
165		297
166	RETVAL = magic_file (cookie, path);	298	RETVAL = ix & 2
		299	? magic_buffer (magic_cookie[ix & 1], data, len)
		300	: magic_file (magic_cookie[ix & 1], data);
		301
		302	perlinterp_acquire ();
167	}	303	}
168	OUTPUT:	304	OUTPUT:
169	RETVAL	305	RETVAL
170		306
171	# missing in Gtk2 perl module	307	# missing/broken in Gtk2 perl module
		308
		309	void
		310	gdk_window_clear_hints (GdkWindow *window)
		311	CODE:
		312	gdk_window_set_geometry_hints (window, 0, 0);
172		313
173	gboolean	314	gboolean
174	gdk_net_wm_supports (GdkAtom property)	315	gdk_net_wm_supports (GdkAtom property)
175	CODE:	316	CODE:
176	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	317	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
182	RETVAL	323	RETVAL
183		324
184	GdkPixbuf_noinc *	325	GdkPixbuf_noinc *
185	dealpha_expose (GdkPixbuf *pb)	326	dealpha_expose (GdkPixbuf *pb)
186	CODE:	327	CODE:
		328	perlinterp_release ();
187	{	329	{
188	int w = gdk_pixbuf_get_width (pb);	330	int w = gdk_pixbuf_get_width (pb);
189	int h = gdk_pixbuf_get_height (pb);	331	int h = gdk_pixbuf_get_height (pb);
190	int bpp = gdk_pixbuf_get_n_channels (pb);	332	int bpp = gdk_pixbuf_get_n_channels (pb);
191	int x, y, i;	333	int x, y, i;
…		…
200	for (x = 0; x < w; x++)	342	for (x = 0; x < w; x++)
201	for (y = 0; y < h; y++)	343	for (y = 0; y < h; y++)
202	for (i = 0; i < 3; i++)	344	for (i = 0; i < 3; i++)
203	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];	345	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
204	}	346	}
		347	perlinterp_acquire ();
205	OUTPUT:	348	OUTPUT:
206	RETVAL	349	RETVAL
207		350
208	GdkPixbuf_noinc *	351	GdkPixbuf_noinc *
209	rotate (GdkPixbuf *pb, int angle)	352	rotate (GdkPixbuf *pb, int angle)
210	CODE:	353	CODE:
		354	perlinterp_release ();
		355	if (angle < 0)
		356	angle += 360;
211	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE	357	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
212	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE	358	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
213	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN	359	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
214	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE	360	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
215	: angle);	361	: angle);
		362	perlinterp_acquire ();
216	OUTPUT:	363	OUTPUT:
217	RETVAL	364	RETVAL
218		365
		366	const char *
		367	filetype (SV *image_data)
		368	CODE:
		369	{
		370	STRLEN data_len;
		371	U8 *data = SvPVbyte (image_data, data_len);
		372
		373	if (data_len >= 20
		374	&& data[0] == 0xff
		375	&& data[1] == 0xd8
		376	&& data[2] == 0xff)
		377	RETVAL = "jpg";
		378	else if (data_len >= 12
		379	&& data[ 0] == (U8)'R'
		380	&& data[ 1] == (U8)'I'
		381	&& data[ 2] == (U8)'F'
		382	&& data[ 3] == (U8)'F'
		383	&& data[ 8] == (U8)'W'
		384	&& data[ 9] == (U8)'E'
		385	&& data[10] == (U8)'B'
		386	&& data[11] == (U8)'P')
		387	RETVAL = "webp";
		388	else if (data_len >= 16
		389	&& data[ 0] == 0x89
		390	&& data[ 1] == (U8)'P'
		391	&& data[ 2] == (U8)'N'
		392	&& data[ 3] == (U8)'G'
		393	&& data[ 4] == 0x0d
		394	&& data[ 5] == 0x0a
		395	&& data[ 6] == 0x1a
		396	&& data[ 7] == 0x0a)
		397	RETVAL = "png";
		398	else
		399	RETVAL = "other";
		400	}
		401	OUTPUT:
		402	RETVAL
		403
219	GdkPixbuf_noinc *	404	GdkPixbuf_noinc *
220	load_jpeg (SV *path, int thumbnail=0)	405	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		406	CODE:
		407	{
		408	#if WEBP
		409	STRLEN data_size;
		410	int alpha;
		411	WebPData data;
		412	WebPDemuxer *demux;
		413	WebPIterator iter;
		414	WebPDecoderConfig config;
		415	int inw, inh;
		416
		417	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		418	data.size = data_size;
		419
		420	perlinterp_release ();
		421
		422	RETVAL = 0;
		423
		424	if (!(demux = WebPDemux (&data)))
		425	goto err_demux;
		426
		427	if (!WebPDemuxGetFrame (demux, 1, &iter))
		428	goto err_iter;
		429
		430	if (!WebPInitDecoderConfig (&config))
		431	goto err_iter;
		432
		433	config.options.use_threads = 1;
		434
		435	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		436	goto err_iter;
		437
		438	inw = config.input.width;
		439	inh = config.input.height;
		440
		441	if (thumbnail)
		442	{
		443	if (inw * ih > inh * iw)
		444	ih = (iw * inh + inw - 1) / inw;
		445	else
		446	iw = (ih * inw + inh - 1) / inh;
		447
		448	config.options.bypass_filtering = 1;
		449	config.options.no_fancy_upsampling = 1;
		450
		451	config.options.use_scaling = 1;
		452	config.options.scaled_width = iw;
		453	config.options.scaled_height = ih;
		454	}
		455	else
		456	{
		457	iw = inw;
		458	ih = inh;
		459	}
		460
		461	alpha = !!config.input.has_alpha;
		462
		463	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		464	if (!RETVAL)
		465	goto err_iter;
		466
		467	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		468	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		469	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		470	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		471	config.output.is_external_memory = 1;
		472
		473	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		474	{
		475	g_object_unref (RETVAL);
		476	RETVAL = 0;
		477	goto err_iter;
		478	}
		479
		480	err_iter:
		481	WebPDemuxReleaseIterator (&iter);
		482	err_demux:
		483	WebPDemuxDelete (demux);
		484
		485	perlinterp_acquire ();
		486	#else
		487	croak ("load_webp: webp not enabled at compile time");
		488	#endif
		489	}
		490	OUTPUT:
		491	RETVAL
		492
		493	GdkPixbuf_noinc *
		494	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
221	CODE:	495	CODE:
222	{	496	{
223	struct jpeg_decompress_struct cinfo;	497	struct jpeg_decompress_struct cinfo;
224	struct jpg_err_mgr jerr;	498	struct jpg_err_mgr jerr;
225	guchar *data;
226	int rs;	499	int rs;
227	FILE *fp;
228	volatile GdkPixbuf *pb = 0;	500	volatile GdkPixbuf *pb = 0;
		501	STRLEN data_len;
		502	guchar *data = SvPVbyte (image_data, data_len);
229		503
230	RETVAL = 0;	504	RETVAL = 0;
231		505
232	fp = fopen (SvPVbyte_nolen (path), "rb");	506	perlinterp_release ();
233
234	if (!fp)
235	XSRETURN_UNDEF;
236		507
237	cinfo.err = jpeg_std_error (&jerr.err);	508	cinfo.err = jpeg_std_error (&jerr.err);
238		509
239	jerr.err.error_exit = cv_error_exit;	510	jerr.err.error_exit = cv_error_exit;
240	jerr.err.output_message = cv_error_output;	511	jerr.err.output_message = cv_error_output;
241		512
242	if ((rs = setjmp (jerr.setjmp_buffer)))	513	if ((rs = setjmp (jerr.setjmp_buffer)))
243	{	514	{
244	fclose (fp);
245	jpeg_destroy_decompress (&cinfo);	515	jpeg_destroy_decompress (&cinfo);
246		516
247	if (pb)	517	if (pb)
248	g_object_unref ((gpointer)pb);	518	g_object_unref ((gpointer)pb);
249		519
		520	perlinterp_acquire ();
250	XSRETURN_UNDEF;	521	XSRETURN_UNDEF;
251	}	522	}
252		523
253	jpeg_create_decompress (&cinfo);	524	jpeg_create_decompress (&cinfo);
		525	cv_jpeg_mem_src (&cinfo, data, data_len);
254		526
255	jpeg_stdio_src (&cinfo, fp);
256	jpeg_read_header (&cinfo, TRUE);	527	jpeg_read_header (&cinfo, TRUE);
257		528
258	cinfo.dct_method = JDCT_DEFAULT;	529	cinfo.dct_method = JDCT_DEFAULT;
259	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	530	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
260	cinfo.do_block_smoothing = FALSE;	531	cinfo.do_block_smoothing = FALSE;
…		…
270	{	541	{
271	cinfo.dct_method = JDCT_FASTEST;	542	cinfo.dct_method = JDCT_FASTEST;
272	cinfo.do_fancy_upsampling = FALSE;	543	cinfo.do_fancy_upsampling = FALSE;
273		544
274	while (cinfo.scale_denom < 8	545	while (cinfo.scale_denom < 8
275	&& cinfo.output_width >= IW*4	546	&& cinfo.output_width >= iw*4
276	&& cinfo.output_height >= IH*4)	547	&& cinfo.output_height >= ih*4)
277	{	548	{
278	cinfo.scale_denom <<= 1;	549	cinfo.scale_denom <<= 1;
279	jpeg_calc_output_dimensions (&cinfo);	550	jpeg_calc_output_dimensions (&cinfo);
280	}	551	}
281	}	552	}
282		553
		554	if (cinfo.output_components != 3)
		555	longjmp (jerr.setjmp_buffer, 3);
		556
		557	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		558	{
		559	cinfo.out_color_space = JCS_CMYK;
		560	cinfo.output_components = 4;
		561	}
		562
283	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	563	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
284	if (!RETVAL)	564	if (!RETVAL)
285	longjmp (jerr.setjmp_buffer, 2);	565	longjmp (jerr.setjmp_buffer, 2);
286		566
287	data = gdk_pixbuf_get_pixels (RETVAL);	567	data = gdk_pixbuf_get_pixels (RETVAL);
288	rs = gdk_pixbuf_get_rowstride (RETVAL);	568	rs = gdk_pixbuf_get_rowstride (RETVAL);
289
290	if (cinfo.output_components != 3)
291	longjmp (jerr.setjmp_buffer, 3);
292		569
293	jpeg_start_decompress (&cinfo);	570	jpeg_start_decompress (&cinfo);
294		571
295	while (cinfo.output_scanline < cinfo.output_height)	572	while (cinfo.output_scanline < cinfo.output_height)
296	{	573	{
…		…
303	rp [3] = (guchar *)rp [2] + rs;	580	rp [3] = (guchar *)rp [2] + rs;
304		581
305	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	582	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
306	}	583	}
307		584
		585	if (cinfo.out_color_space == JCS_CMYK)
		586	{
		587	guchar end = data + cinfo.output_height rs;
		588
		589	while (data < end)
		590	{
		591	U32 c = data [0];
		592	U32 m = data [1];
		593	U32 y = data [2];
		594	U32 k = data [3];
		595
		596	if (0)
		597	if (cinfo.Adobe_transform == 2)
		598	{
		599	c ^= 0xff;
		600	m ^= 0xff;
		601	y ^= 0xff;
		602	k ^= 0xff;
		603	}
		604
		605	data [0] = (c * k + 0x80) / 0xff;
		606	data [1] = (m * k + 0x80) / 0xff;
		607	data [2] = (y * k + 0x80) / 0xff;
		608	data [3] = 0xff;
		609
		610	data += 4;
		611	}
		612	}
		613
308	jpeg_finish_decompress (&cinfo);	614	jpeg_finish_decompress (&cinfo);
309	fclose (fp);
310	jpeg_destroy_decompress (&cinfo);	615	jpeg_destroy_decompress (&cinfo);
		616	perlinterp_acquire ();
311	}	617	}
312	OUTPUT:	618	OUTPUT:
313	RETVAL	619	RETVAL
314		620
		621	void
		622	compare (GdkPixbuf a, GdkPixbuf b)
		623	PPCODE:
		624	perlinterp_release ();
		625	{
		626	int w = gdk_pixbuf_get_width (a);
		627	int h = gdk_pixbuf_get_height (a);
		628
		629	int sa = gdk_pixbuf_get_rowstride (a);
		630	int sb = gdk_pixbuf_get_rowstride (b);
		631
		632	guchar *pa = gdk_pixbuf_get_pixels (a);
		633	guchar *pb = gdk_pixbuf_get_pixels (b);
		634
		635	int x, y;
		636
		637	assert (w == gdk_pixbuf_get_width (b));
		638	assert (h == gdk_pixbuf_get_height (b));
		639
		640	assert (gdk_pixbuf_get_n_channels (a) == 3);
		641	assert (gdk_pixbuf_get_n_channels (b) == 3);
		642
		643	double diff = 0.;
		644	int peak = 0;
		645
		646	if (w && h)
		647	for (y = 0; y < h; y++)
		648	{
		649	guchar pa_ = pa + y sa;
		650	guchar pb_ = pb + y sb;
		651
		652	for (x = 0; x < w; x++)
		653	{
		654	int d;
		655
		656	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		657	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		658	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		659	}
		660	}
		661
		662	perlinterp_acquire ();
		663
		664	EXTEND (SP, 2);
		665	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		666	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		667	}
		668
315	#############################################################################	669	#############################################################################
316		670
317	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	671	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		672
		673	# currently only works for filenames (octet strings)
318		674
319	SV *	675	SV *
320	foldcase (SV *pathsv)	676	foldcase (SV *pathsv)
321	PROTOTYPE: $	677	PROTOTYPE: $
322	CODE:	678	CODE:
323	{	679	{
324	STRLEN plen;	680	STRLEN plen;
325	U8 path = (U8 )SvPVutf8 (pathsv, plen);	681	U8 path = (U8 )SvPV (pathsv, plen);
326	U8 *pend = path + plen;	682	U8 *pend = path + plen;
327	U8 dst [plen * 6 * 3], *dstp = dst;	683	U8 dst [plen * 6 * 3], *dstp = dst;
328		684
329	while (path < pend)	685	while (path < pend)
330	{	686	{
331	U8 ch = *path;	687	U8 ch = *path;
332		688
333	if (ch >= 'a' && ch <= 'z')	689	if (ch >= 'a' && ch <= 'z')
334	dstp++ = path++;	690	dstp++ = path++;
		691	else if (ch >= 'A' && ch <= 'Z')
		692	dstp++ = path++ + ('a' - 'A');
335	else if (ch >= '0' && ch <= '9')	693	else if (ch >= '0' && ch <= '9')
336	{	694	{
337	STRLEN el, nl = 0;	695	STRLEN el, nl = 0;
338	while (path >= '0' && path <= '9' && path < pend)	696	while (path >= '0' && path <= '9' && path < pend)
339	path++, nl++;	697	path++, nl++;
…		…
342	*dstp++ = '0';	700	*dstp++ = '0';
343		701
344	memcpy (dstp, path - nl, nl);	702	memcpy (dstp, path - nl, nl);
345	dstp += nl;	703	dstp += nl;
346	}	704	}
		705	else
		706	dstp++ = path++;
		707	#if 0
347	else	708	else
348	{	709	{
349	STRLEN cl;	710	STRLEN cl;
350	to_utf8_fold (path, dstp, &cl);	711	to_utf8_fold (path, dstp, &cl);
351	dstp += cl;	712	dstp += cl;
352	path += is_utf8_char (path);	713	path += is_utf8_char (path);
353	}	714	}
		715	#endif
354	}	716	}
355		717
356	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	718	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
357	}	719	}
358	OUTPUT:	720	OUTPUT:
…		…
520	#############################################################################	882	#############################################################################
521		883
522	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	884	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
523		885
524	SV *	886	SV *
525	make_histograms (SV *ar)	887	extract_features (SV *ar)
526	CODE:	888	CODE:
527	{	889	{
528	int i;	890	int i;
529	AV av, result;	891	AV av, result;
530		892
531	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	893	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
532	croak ("Not an array ref as first argument to make_histogram");	894	croak ("Not an array ref as first argument to extract_features");
533		895
534	av = (AV *) SvRV (ar);	896	av = (AV *) SvRV (ar);
535	result = newAV ();	897	result = newAV ();
536		898
537	for (i = 0; i <= av_len (av); ++i)	899	for (i = 0; i <= av_len (av); ++i)
538	{	900	{
539	const int HISTSIZE = 64;
540
541	int j;
542	SV sv = av_fetch (av, i, 1);	901	SV sv = av_fetch (av, i, 1);
543	STRLEN len;
544	char *buf = SvPVbyte (sv, len);
545
546	int tmphist[HISTSIZE];
547	float *hist;
548
549	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	902	SV histsv = newSV (9 sizeof (float) + 1);
		903
550	SvPOK_on (histsv);	904	SvPOK_on (histsv);
551	SvCUR_set (histsv, HISTSIZE * sizeof (float));	905	SvCUR_set (histsv, 9 * sizeof (float));
552	hist = (float *)SvPVX (histsv);	906	float hist = (float )SvPVX (histsv);
553		907
554	Zero (tmphist, sizeof (tmphist), char);	908	struct feature f_h, f_s, f_v;
		909	feature_init (&f_h);
		910	feature_init (&f_s);
		911	feature_init (&f_v);
555		912
556	for (j = len; j--; )
557	{
558	unsigned int idx
559	= ((*buf & 0xc0) >> 2)
560	\| ((*buf & 0x18) >> 1)
561	\| (*buf & 0x03);
562
563	++tmphist[idx];
564	++buf;
565	}
566		913	{
567	for (j = 0; j < HISTSIZE; ++j)	914	STRLEN len;
568	hist[j] = (float)tmphist[j] / (len + 1e-30);	915	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		916	while (len >= 3)
		917	{
		918	unsigned int r, g, b, h, s, v;
		919	r = buf++; g = buf++; b = *buf++;
		920	rgb_to_hsv (r, g, b, &h, &s, &v);
		921
		922	feature_update_pass_1 (&f_h, h);
		923	feature_update_pass_1 (&f_s, s);
		924	feature_update_pass_1 (&f_v, v);
		925
		926	len -= 3;
		927	}
		928
		929	feature_finish_pass_1 (&f_h);
		930	feature_finish_pass_1 (&f_s);
		931	feature_finish_pass_1 (&f_v);
		932	}
		933
		934	{
		935	STRLEN len;
		936	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		937	while (len >= 3)
		938	{
		939	unsigned int r, g, b, h, s, v;
		940	r = buf++; g = buf++; b = *buf++;
		941	rgb_to_hsv (r, g, b, &h, &s, &v);
		942
		943	feature_update_pass_2 (&f_h, h);
		944	feature_update_pass_2 (&f_s, s);
		945	feature_update_pass_2 (&f_v, v);
		946
		947	len -= 3;
		948	}
		949
		950	feature_finish_pass_2 (&f_h);
		951	feature_finish_pass_2 (&f_s);
		952	feature_finish_pass_2 (&f_v);
		953	}
		954
		955	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		956	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		957	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
569		958
570	av_push (result, histsv);	959	av_push (result, histsv);
571	}	960	}
572		961
573	RETVAL = newRV_noinc ((SV *)result);	962	RETVAL = newRV_noinc ((SV *)result);
574	}	963	}
575	OUTPUT:	964	OUTPUT:
576	RETVAL	965	RETVAL
577		966
578

Diff Legend

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

Comparing CV/CV.xs (file contents): Revision 1.31 by root, Wed Feb 15 08:08:37 2006 UTC vs. Revision 1.55 by root, Sat Dec 23 08:05:32 2017 UTC

Diff Legend

Comparing CV/CV.xs (file contents):
Revision 1.31 by root, Wed Feb 15 08:08:37 2006 UTC vs.
Revision 1.55 by root, Sat Dec 23 08:05:32 2017 UTC