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

Comparing CV/CV.xs (file contents):
Revision 1.34 by root, Tue Mar 7 16:26:25 2006 UTC vs.
Revision 1.54 by root, Sat Dec 23 08:04:48 2017 UTC

…		…
7	#include <math.h>	7	#include <math.h>
8		8
9	#include <magic.h>	9	#include <magic.h>
10		10
11	#include <jpeglib.h>	11	#include <jpeglib.h>
		12	#include <jerror.h>
		13
12	#include <glib.h>	14	#include <glib.h>
13	#include <gtk/gtk.h>	15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
14	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
15		18
16	#include <gperl.h>	19	#include <gperl.h>
17	#include <gtk2perl.h>	20	#include <gtk2perl.h>
18		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
19	#define IW 80 /* MUST match Schnauzer.pm! */	31	#define IW 80 /* MUST match Schnauzer.pm! */
20	#define IH 60 /* MUST match Schnauzer.pm! */	32	#define IH 60 /* MUST match Schnauzer.pm! */
21		33
22	#define RAND (seed = (seed + 7141) * 54773 % 134456)	34	#define RAND (seed = (seed + 7141) * 54773 % 134456)
23		35
24	#define LINELENGTH 240	36	#define LINELENGTH 240
25		37
26	#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 */
27		43
28	struct jpg_err_mgr	44	struct jpg_err_mgr
29	{	45	{
30	struct jpeg_error_mgr err;	46	struct jpeg_error_mgr err;
31	jmp_buf setjmp_buffer;	47	jmp_buf setjmp_buffer;
32	};	48	};
33		49
34	static void	50	static void
35	cv_error_exit (j_common_ptr cinfo)	51	cv_error_exit (j_common_ptr cinfo)
36	{	52	{
		53	cinfo->err->output_message (cinfo);
37	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	54	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
38	}	55	}
39		56
40	static void	57	static void
41	cv_error_output (j_common_ptr cinfo)	58	cv_error_output (j_common_ptr cinfo)
42	{	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);
43	return;	65	return;
44	}	66	}
45		67
46	static void	68	static void
47	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,
…		…
68		90
69	*h &= 255;	91	*h &= 255;
70	}	92	}
71	}	93	}
72		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
73	static guint32 a85_val;	150	static guint32 a85_val;
74	static guint a85_cnt;	151	static guint a85_cnt;
75	static guchar a85_buf[LINELENGTH], *a85_ptr;	152	static guchar a85_buf[LINELENGTH], *a85_ptr;
76		153
77	static void	154	static void
…		…
89	if (!--a85_cnt)	166	if (!--a85_cnt)
90	{	167	{
91	a85_cnt = 4;	168	a85_cnt = 4;
92	if (a85_val)	169	if (a85_val)
93	{	170	{
94	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
95	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	172	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
96	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	173	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
97	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
98	a85_ptr[0] = (a85_val ) + 33;	175	a85_ptr[0] = (a85_val ) + 33;
99		176
100	a85_ptr += 5;	177	a85_ptr += 5;
101	}	178	}
…		…
125	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	202	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
126	}	203	}
127		204
128	/////////////////////////////////////////////////////////////////////////////	205	/////////////////////////////////////////////////////////////////////////////
129		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
130	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	255	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
131		256
132	PROTOTYPES: ENABLE	257	PROTOTYPES: ENABLE
133		258
134	# missing function in perl. really :)	259	# missing function in perl. really :)
…		…
147		272
148	OUTPUT:	273	OUTPUT:
149	RETVAL	274	RETVAL
150		275
151	const char *	276	const char *
152	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
153	CODE:	283	CODE:
154	{	284	{
155	static magic_t cookie;	285	STRLEN len;
		286	char *data = SvPVbyte (path_or_data, len);
156		287
157	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);
158	{	294	}
159	cookie = magic_open (MAGIC_NONE);
160		295
161	if (cookie)	296	perlinterp_release ();
162	magic_load (cookie, 0);
163	else
164	XSRETURN_UNDEF;
165	}
166		297
167	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 ();
168	}	303	}
169	OUTPUT:	304	OUTPUT:
170	RETVAL	305	RETVAL
171		306
172	const char *
173	magic_mime (const char *path)
174	CODE:
175	{
176	static magic_t cookie;
177
178	if (!cookie)
179	{
180	cookie = magic_open (MAGIC_MIME);
181
182	if (cookie)
183	magic_load (cookie, 0);
184	else
185	XSRETURN_UNDEF;
186	}
187
188	RETVAL = magic_file (cookie, path);
189	}
190	OUTPUT:
191	RETVAL
192
193	# 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);
194		313
195	gboolean	314	gboolean
196	gdk_net_wm_supports (GdkAtom property)	315	gdk_net_wm_supports (GdkAtom property)
197	CODE:	316	CODE:
198	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	317	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
204	RETVAL	323	RETVAL
205		324
206	GdkPixbuf_noinc *	325	GdkPixbuf_noinc *
207	dealpha_expose (GdkPixbuf *pb)	326	dealpha_expose (GdkPixbuf *pb)
208	CODE:	327	CODE:
		328	perlinterp_release ();
209	{	329	{
210	int w = gdk_pixbuf_get_width (pb);	330	int w = gdk_pixbuf_get_width (pb);
211	int h = gdk_pixbuf_get_height (pb);	331	int h = gdk_pixbuf_get_height (pb);
212	int bpp = gdk_pixbuf_get_n_channels (pb);	332	int bpp = gdk_pixbuf_get_n_channels (pb);
213	int x, y, i;	333	int x, y, i;
…		…
222	for (x = 0; x < w; x++)	342	for (x = 0; x < w; x++)
223	for (y = 0; y < h; y++)	343	for (y = 0; y < h; y++)
224	for (i = 0; i < 3; i++)	344	for (i = 0; i < 3; i++)
225	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];
226	}	346	}
		347	perlinterp_acquire ();
227	OUTPUT:	348	OUTPUT:
228	RETVAL	349	RETVAL
229		350
230	GdkPixbuf_noinc *	351	GdkPixbuf_noinc *
231	rotate (GdkPixbuf *pb, int angle)	352	rotate (GdkPixbuf *pb, int angle)
232	CODE:	353	CODE:
		354	perlinterp_release ();
		355	if (angle < 0)
		356	angle += 360;
233	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
234	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE	358	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
235	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN	359	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
236	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE	360	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
237	: angle);	361	: angle);
		362	perlinterp_acquire ();
238	OUTPUT:	363	OUTPUT:
239	RETVAL	364	RETVAL
240		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
241	GdkPixbuf_noinc *	404	GdkPixbuf_noinc *
242	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
		484	perlinterp_acquire ();
		485	#else
		486	croak ("load_webp: webp not enabled at compile time");
		487	#endif
		488	}
		489	OUTPUT:
		490	RETVAL
		491
		492	GdkPixbuf_noinc *
		493	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
243	CODE:	494	CODE:
244	{	495	{
245	struct jpeg_decompress_struct cinfo;	496	struct jpeg_decompress_struct cinfo;
246	struct jpg_err_mgr jerr;	497	struct jpg_err_mgr jerr;
247	guchar *data;
248	int rs;	498	int rs;
249	FILE *fp;
250	volatile GdkPixbuf *pb = 0;	499	volatile GdkPixbuf *pb = 0;
		500	STRLEN data_len;
		501	guchar *data = SvPVbyte (image_data, data_len);
251		502
252	RETVAL = 0;	503	RETVAL = 0;
253		504
254	fp = fopen (SvPVbyte_nolen (path), "rb");	505	perlinterp_release ();
255
256	if (!fp)
257	XSRETURN_UNDEF;
258		506
259	cinfo.err = jpeg_std_error (&jerr.err);	507	cinfo.err = jpeg_std_error (&jerr.err);
260		508
261	jerr.err.error_exit = cv_error_exit;	509	jerr.err.error_exit = cv_error_exit;
262	jerr.err.output_message = cv_error_output;	510	jerr.err.output_message = cv_error_output;
263		511
264	if ((rs = setjmp (jerr.setjmp_buffer)))	512	if ((rs = setjmp (jerr.setjmp_buffer)))
265	{	513	{
266	fclose (fp);
267	jpeg_destroy_decompress (&cinfo);	514	jpeg_destroy_decompress (&cinfo);
268		515
269	if (pb)	516	if (pb)
270	g_object_unref ((gpointer)pb);	517	g_object_unref ((gpointer)pb);
271		518
		519	perlinterp_acquire ();
272	XSRETURN_UNDEF;	520	XSRETURN_UNDEF;
273	}	521	}
274		522
275	jpeg_create_decompress (&cinfo);	523	jpeg_create_decompress (&cinfo);
		524	cv_jpeg_mem_src (&cinfo, data, data_len);
276		525
277	jpeg_stdio_src (&cinfo, fp);
278	jpeg_read_header (&cinfo, TRUE);	526	jpeg_read_header (&cinfo, TRUE);
279		527
280	cinfo.dct_method = JDCT_DEFAULT;	528	cinfo.dct_method = JDCT_DEFAULT;
281	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	529	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
282	cinfo.do_block_smoothing = FALSE;	530	cinfo.do_block_smoothing = FALSE;
…		…
292	{	540	{
293	cinfo.dct_method = JDCT_FASTEST;	541	cinfo.dct_method = JDCT_FASTEST;
294	cinfo.do_fancy_upsampling = FALSE;	542	cinfo.do_fancy_upsampling = FALSE;
295		543
296	while (cinfo.scale_denom < 8	544	while (cinfo.scale_denom < 8
297	&& cinfo.output_width >= IW*4	545	&& cinfo.output_width >= iw*4
298	&& cinfo.output_height >= IH*4)	546	&& cinfo.output_height >= ih*4)
299	{	547	{
300	cinfo.scale_denom <<= 1;	548	cinfo.scale_denom <<= 1;
301	jpeg_calc_output_dimensions (&cinfo);	549	jpeg_calc_output_dimensions (&cinfo);
302	}	550	}
303	}	551	}
304		552
		553	if (cinfo.output_components != 3)
		554	longjmp (jerr.setjmp_buffer, 3);
		555
		556	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		557	{
		558	cinfo.out_color_space = JCS_CMYK;
		559	cinfo.output_components = 4;
		560	}
		561
305	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	562	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
306	if (!RETVAL)	563	if (!RETVAL)
307	longjmp (jerr.setjmp_buffer, 2);	564	longjmp (jerr.setjmp_buffer, 2);
308		565
309	data = gdk_pixbuf_get_pixels (RETVAL);	566	data = gdk_pixbuf_get_pixels (RETVAL);
310	rs = gdk_pixbuf_get_rowstride (RETVAL);	567	rs = gdk_pixbuf_get_rowstride (RETVAL);
311
312	if (cinfo.output_components != 3)
313	longjmp (jerr.setjmp_buffer, 3);
314		568
315	jpeg_start_decompress (&cinfo);	569	jpeg_start_decompress (&cinfo);
316		570
317	while (cinfo.output_scanline < cinfo.output_height)	571	while (cinfo.output_scanline < cinfo.output_height)
318	{	572	{
…		…
325	rp [3] = (guchar *)rp [2] + rs;	579	rp [3] = (guchar *)rp [2] + rs;
326		580
327	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	581	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
328	}	582	}
329		583
		584	if (cinfo.out_color_space == JCS_CMYK)
		585	{
		586	guchar end = data + cinfo.output_height rs;
		587
		588	while (data < end)
		589	{
		590	U32 c = data [0];
		591	U32 m = data [1];
		592	U32 y = data [2];
		593	U32 k = data [3];
		594
		595	if (0)
		596	if (cinfo.Adobe_transform == 2)
		597	{
		598	c ^= 0xff;
		599	m ^= 0xff;
		600	y ^= 0xff;
		601	k ^= 0xff;
		602	}
		603
		604	data [0] = (c * k + 0x80) / 0xff;
		605	data [1] = (m * k + 0x80) / 0xff;
		606	data [2] = (y * k + 0x80) / 0xff;
		607	data [3] = 0xff;
		608
		609	data += 4;
		610	}
		611	}
		612
330	jpeg_finish_decompress (&cinfo);	613	jpeg_finish_decompress (&cinfo);
331	fclose (fp);
332	jpeg_destroy_decompress (&cinfo);	614	jpeg_destroy_decompress (&cinfo);
		615	perlinterp_acquire ();
333	}	616	}
334	OUTPUT:	617	OUTPUT:
335	RETVAL	618	RETVAL
336		619
337	void	620	void
338	compare (GdkPixbuf a, GdkPixbuf b)	621	compare (GdkPixbuf a, GdkPixbuf b)
339	PPCODE:	622	PPCODE:
		623	perlinterp_release ();
340	{	624	{
341	int w = gdk_pixbuf_get_width (a);	625	int w = gdk_pixbuf_get_width (a);
342	int h = gdk_pixbuf_get_height (a);	626	int h = gdk_pixbuf_get_height (a);
		627
343	int sa = gdk_pixbuf_get_rowstride (a);	628	int sa = gdk_pixbuf_get_rowstride (a);
344	int sb = gdk_pixbuf_get_rowstride (b);	629	int sb = gdk_pixbuf_get_rowstride (b);
345		630
346	guchar *pa = gdk_pixbuf_get_pixels (a);	631	guchar *pa = gdk_pixbuf_get_pixels (a);
347	guchar *pb = gdk_pixbuf_get_pixels (b);	632	guchar *pb = gdk_pixbuf_get_pixels (b);
…		…
355	assert (gdk_pixbuf_get_n_channels (b) == 3);	640	assert (gdk_pixbuf_get_n_channels (b) == 3);
356		641
357	double diff = 0.;	642	double diff = 0.;
358	int peak = 0;	643	int peak = 0;
359		644
360	if (x && y)	645	if (w && h)
361	for (y = 0; y < h; y++)	646	for (y = 0; y < h; y++)
362	{	647	{
363	guchar pa_ = pa + y sa;	648	guchar pa_ = pa + y sa;
364	guchar pb_ = pb + y sb;	649	guchar pb_ = pb + y sb;
365		650
…		…
371	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	656	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
372	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));
373	}	658	}
374	}	659	}
375		660
		661	perlinterp_acquire ();
		662
376	EXTEND (SP, 2);	663	EXTEND (SP, 2);
377	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));	664	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
378	PUSHs (sv_2mortal (newSVnv (peak / 255.)));	665	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
379	}	666	}
380		667
381	#############################################################################	668	#############################################################################
382		669
383	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	670	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
384		671
		672	# currently only works for filenames (octet strings)
		673
385	SV *	674	SV *
386	foldcase (SV *pathsv)	675	foldcase (SV *pathsv)
387	PROTOTYPE: $	676	PROTOTYPE: $
388	CODE:	677	CODE:
389	{	678	{
390	STRLEN plen;	679	STRLEN plen;
391	U8 path = (U8 )SvPVutf8 (pathsv, plen);	680	U8 path = (U8 )SvPV (pathsv, plen);
392	U8 *pend = path + plen;	681	U8 *pend = path + plen;
393	U8 dst [plen * 6 * 3], *dstp = dst;	682	U8 dst [plen * 6 * 3], *dstp = dst;
394		683
395	while (path < pend)	684	while (path < pend)
396	{	685	{
397	U8 ch = *path;	686	U8 ch = *path;
398		687
399	if (ch >= 'a' && ch <= 'z')	688	if (ch >= 'a' && ch <= 'z')
400	dstp++ = path++;	689	dstp++ = path++;
		690	else if (ch >= 'A' && ch <= 'Z')
		691	dstp++ = path++ + ('a' - 'A');
401	else if (ch >= '0' && ch <= '9')	692	else if (ch >= '0' && ch <= '9')
402	{	693	{
403	STRLEN el, nl = 0;	694	STRLEN el, nl = 0;
404	while (path >= '0' && path <= '9' && path < pend)	695	while (path >= '0' && path <= '9' && path < pend)
405	path++, nl++;	696	path++, nl++;
…		…
408	*dstp++ = '0';	699	*dstp++ = '0';
409		700
410	memcpy (dstp, path - nl, nl);	701	memcpy (dstp, path - nl, nl);
411	dstp += nl;	702	dstp += nl;
412	}	703	}
		704	else
		705	dstp++ = path++;
		706	#if 0
413	else	707	else
414	{	708	{
415	STRLEN cl;	709	STRLEN cl;
416	to_utf8_fold (path, dstp, &cl);	710	to_utf8_fold (path, dstp, &cl);
417	dstp += cl;	711	dstp += cl;
418	path += is_utf8_char (path);	712	path += is_utf8_char (path);
419	}	713	}
		714	#endif
420	}	715	}
421		716
422	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	717	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
423	}	718	}
424	OUTPUT:	719	OUTPUT:
…		…
586	#############################################################################	881	#############################################################################
587		882
588	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	883	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
589		884
590	SV *	885	SV *
591	make_histograms (SV *ar)	886	extract_features (SV *ar)
592	CODE:	887	CODE:
593	{	888	{
594	int i;	889	int i;
595	AV av, result;	890	AV av, result;
596		891
597	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	892	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
598	croak ("Not an array ref as first argument to make_histogram");	893	croak ("Not an array ref as first argument to extract_features");
599		894
600	av = (AV *) SvRV (ar);	895	av = (AV *) SvRV (ar);
601	result = newAV ();	896	result = newAV ();
602		897
603	for (i = 0; i <= av_len (av); ++i)	898	for (i = 0; i <= av_len (av); ++i)
604	{	899	{
605	const int HISTSIZE = 64;
606
607	int j;
608	SV sv = av_fetch (av, i, 1);	900	SV sv = av_fetch (av, i, 1);
609	STRLEN len;
610	char *buf = SvPVbyte (sv, len);
611
612	int tmphist[HISTSIZE];
613	float *hist;
614
615	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	901	SV histsv = newSV (9 sizeof (float) + 1);
		902
616	SvPOK_on (histsv);	903	SvPOK_on (histsv);
617	SvCUR_set (histsv, HISTSIZE * sizeof (float));	904	SvCUR_set (histsv, 9 * sizeof (float));
618	hist = (float *)SvPVX (histsv);	905	float hist = (float )SvPVX (histsv);
619		906
620	Zero (tmphist, sizeof (tmphist), char);	907	struct feature f_h, f_s, f_v;
		908	feature_init (&f_h);
		909	feature_init (&f_s);
		910	feature_init (&f_v);
621		911
622	for (j = len; j--; )
623	{
624	unsigned int idx
625	= ((*buf & 0xc0) >> 2)
626	\| ((*buf & 0x18) >> 1)
627	\| (*buf & 0x03);
628
629	++tmphist[idx];
630	++buf;
631	}
632		912	{
633	for (j = 0; j < HISTSIZE; ++j)	913	STRLEN len;
634	hist[j] = (float)tmphist[j] / (len + 1e-30);	914	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		915	while (len >= 3)
		916	{
		917	unsigned int r, g, b, h, s, v;
		918	r = buf++; g = buf++; b = *buf++;
		919	rgb_to_hsv (r, g, b, &h, &s, &v);
		920
		921	feature_update_pass_1 (&f_h, h);
		922	feature_update_pass_1 (&f_s, s);
		923	feature_update_pass_1 (&f_v, v);
		924
		925	len -= 3;
		926	}
		927
		928	feature_finish_pass_1 (&f_h);
		929	feature_finish_pass_1 (&f_s);
		930	feature_finish_pass_1 (&f_v);
		931	}
		932
		933	{
		934	STRLEN len;
		935	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		936	while (len >= 3)
		937	{
		938	unsigned int r, g, b, h, s, v;
		939	r = buf++; g = buf++; b = *buf++;
		940	rgb_to_hsv (r, g, b, &h, &s, &v);
		941
		942	feature_update_pass_2 (&f_h, h);
		943	feature_update_pass_2 (&f_s, s);
		944	feature_update_pass_2 (&f_v, v);
		945
		946	len -= 3;
		947	}
		948
		949	feature_finish_pass_2 (&f_h);
		950	feature_finish_pass_2 (&f_s);
		951	feature_finish_pass_2 (&f_v);
		952	}
		953
		954	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		955	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		956	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
635		957
636	av_push (result, histsv);	958	av_push (result, histsv);
637	}	959	}
638		960
639	RETVAL = newRV_noinc ((SV *)result);	961	RETVAL = newRV_noinc ((SV *)result);
640	}	962	}
641	OUTPUT:	963	OUTPUT:
642	RETVAL	964	RETVAL
643		965
644

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Comparing CV/CV.xs (file contents): Revision 1.34 by root, Tue Mar 7 16:26:25 2006 UTC vs. Revision 1.54 by root, Sat Dec 23 08:04:48 2017 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.34 by root, Tue Mar 7 16:26:25 2006 UTC vs.
Revision 1.54 by root, Sat Dec 23 08:04:48 2017 UTC