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

Comparing CV/CV.xs (file contents):
Revision 1.21 by root, Sat Jul 23 03:25:51 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>
		12	#include <glib.h>
		13	#include <gtk/gtk.h>
		14	#include <gdk/gdkx.h>
9	#include <gdk-pixbuf/gdk-pixbuf.h>	15	#include <gdk-pixbuf/gdk-pixbuf.h>
10		16
11	#include <gperl.h>	17	#include <gperl.h>
12	#include <gtk2perl.h>	18	#include <gtk2perl.h>
13		19
		20	#include <assert.h>
		21
		22	#if WEBP
		23	#include <webp/decode.h>
		24	#endif
		25
		26	#include "perlmulticore.h"
		27
14	#define IW 80 /* MUST match Schnauer.pm! */	28	#define IW 80 /* MUST match Schnauzer.pm! */
15	#define IH 60 /* MUST match Schnauer.pm! */	29	#define IH 60 /* MUST match Schnauzer.pm! */
16		30
17	#define RAND (seed = (seed + 7141) * 54773 % 134456)	31	#define RAND (seed = (seed + 7141) * 54773 % 134456)
18		32
19	#define LINELENGTH 240	33	#define LINELENGTH 240
20		34
21	#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 */
22		40
23	struct jpg_err_mgr	41	struct jpg_err_mgr
24	{	42	{
25	struct jpeg_error_mgr err;	43	struct jpeg_error_mgr err;
26	jmp_buf setjmp_buffer;	44	jmp_buf setjmp_buffer;
27	};	45	};
28		46
29	static void	47	static void
30	cv_error_exit (j_common_ptr cinfo)	48	cv_error_exit (j_common_ptr cinfo)
31	{	49	{
		50	cinfo->err->output_message (cinfo);
32	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	51	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
33	}	52	}
34		53
35	static void	54	static void
36	cv_error_output (j_common_ptr cinfo)	55	cv_error_output (j_common_ptr cinfo)
37	{	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);
38	return;	62	return;
39	}	63	}
40		64
41	static void	65	static void
42	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,
…		…
63		87
64	*h &= 255;	88	*h &= 255;
65	}	89	}
66	}	90	}
67		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
68	static guint32 a85_val;	147	static guint32 a85_val;
69	static guint a85_cnt;	148	static guint a85_cnt;
70	static guchar a85_buf[LINELENGTH], *a85_ptr;	149	static guchar a85_buf[LINELENGTH], *a85_ptr;
71		150
72	static void	151	static void
…		…
84	if (!--a85_cnt)	163	if (!--a85_cnt)
85	{	164	{
86	a85_cnt = 4;	165	a85_cnt = 4;
87	if (a85_val)	166	if (a85_val)
88	{	167	{
89	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	168	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
90	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	169	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
91	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	170	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
92	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
93	a85_ptr[0] = (a85_val ) + 33;	172	a85_ptr[0] = (a85_val ) + 33;
94		173
95	a85_ptr += 5;	174	a85_ptr += 5;
96	}	175	}
…		…
124		203
125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	204	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
126		205
127	PROTOTYPES: ENABLE	206	PROTOTYPES: ENABLE
128		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
		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);
		260
		261	gboolean
		262	gdk_net_wm_supports (GdkAtom property)
		263	CODE:
		264	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		265	RETVAL = gdk_net_wm_supports (property);
		266	#else
		267	RETVAL = 0;
		268	#endif
		269	OUTPUT:
		270	RETVAL
		271
129	GdkPixbuf_noinc *	272	GdkPixbuf_noinc *
130	transpose (GdkPixbuf *pb)	273	dealpha_expose (GdkPixbuf *pb)
131	CODE:	274	CODE:
		275	perlinterp_release ();
132	{	276	{
133	int w = gdk_pixbuf_get_width (pb);	277	int w = gdk_pixbuf_get_width (pb);
134	int h = gdk_pixbuf_get_height (pb);	278	int h = gdk_pixbuf_get_height (pb);
135	int bpp = gdk_pixbuf_get_n_channels (pb);	279	int bpp = gdk_pixbuf_get_n_channels (pb);
136	int x, y, i;	280	int x, y, i;
137	guchar src = gdk_pixbuf_get_pixels (pb), dst;	281	guchar src = gdk_pixbuf_get_pixels (pb), dst;
138	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	282	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
139		283
140	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	284	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
141		285
142	dst = gdk_pixbuf_get_pixels (RETVAL);	286	dst = gdk_pixbuf_get_pixels (RETVAL);
143	dstr = gdk_pixbuf_get_rowstride (RETVAL);	287	dstr = gdk_pixbuf_get_rowstride (RETVAL);
144		288
145	for (y = 0; y < h; y++)
146	for (x = 0; x < w; x++)	289	for (x = 0; x < w; x++)
		290	for (y = 0; y < h; y++)
147	for (i = 0; i < bpp; i++)	291	for (i = 0; i < 3; i++)
148	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];
149	}	293	}
		294	perlinterp_acquire ();
150	OUTPUT:	295	OUTPUT:
151	RETVAL	296	RETVAL
152		297
153	GdkPixbuf_noinc *	298	GdkPixbuf_noinc *
154	flop (GdkPixbuf *pb)	299	rotate (GdkPixbuf *pb, int angle)
155	CODE:	300	CODE:
156	{	301	perlinterp_release ();
157	int w = gdk_pixbuf_get_width (pb);	302	if (angle < 0)
158	int h = gdk_pixbuf_get_height (pb);	303	angle += 360;
159	int bpp = gdk_pixbuf_get_n_channels (pb);	304	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
160	int x, y, i;	305	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
161	guchar src = gdk_pixbuf_get_pixels (pb), dst;	306	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
162	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	307	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
163		308	: angle);
164	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	309	perlinterp_acquire ();
165
166	dst = gdk_pixbuf_get_pixels (RETVAL);
167	dstr = gdk_pixbuf_get_rowstride (RETVAL);
168
169	for (y = 0; y < h; y++)
170	for (x = 0; x < w; x++)
171	for (i = 0; i < bpp; i++)
172	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
173	}
174	OUTPUT:	310	OUTPUT:
175	RETVAL	311	RETVAL
176		312
177	GdkPixbuf_noinc *	313	GdkPixbuf_noinc *
178	load_jpeg (char *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)
179	CODE:	391	CODE:
180	{	392	{
181	struct jpeg_decompress_struct cinfo;	393	struct jpeg_decompress_struct cinfo;
182	struct jpg_err_mgr jerr;	394	struct jpg_err_mgr jerr;
183	guchar *data;	395	guchar *data;
184	int rs;	396	int rs;
185	FILE *fp;	397	FILE *fp;
186	volatile GdkPixbuf *pb = 0;	398	volatile GdkPixbuf *pb = 0;
		399
187	RETVAL = 0;	400	RETVAL = 0;
188		401
189	if (!(fp = fopen (path, "rb")))	402	fp = fopen (SvPVbyte_nolen (path), "rb");
		403
		404	if (!fp)
190	XSRETURN_UNDEF;	405	XSRETURN_UNDEF;
		406
		407	perlinterp_release ();
191		408
192	cinfo.err = jpeg_std_error (&jerr.err);	409	cinfo.err = jpeg_std_error (&jerr.err);
193		410
194	jerr.err.error_exit = cv_error_exit;	411	jerr.err.error_exit = cv_error_exit;
195	jerr.err.output_message = cv_error_output;	412	jerr.err.output_message = cv_error_output;
…		…
200	jpeg_destroy_decompress (&cinfo);	417	jpeg_destroy_decompress (&cinfo);
201		418
202	if (pb)	419	if (pb)
203	g_object_unref ((gpointer)pb);	420	g_object_unref ((gpointer)pb);
204		421
		422	perlinterp_acquire ();
205	XSRETURN_UNDEF;	423	XSRETURN_UNDEF;
206	}	424	}
207		425
208	jpeg_create_decompress (&cinfo);	426	jpeg_create_decompress (&cinfo);
209		427
…		…
225	{	443	{
226	cinfo.dct_method = JDCT_FASTEST;	444	cinfo.dct_method = JDCT_FASTEST;
227	cinfo.do_fancy_upsampling = FALSE;	445	cinfo.do_fancy_upsampling = FALSE;
228		446
229	while (cinfo.scale_denom < 8	447	while (cinfo.scale_denom < 8
230	&& cinfo.output_width >= IW*4	448	&& cinfo.output_width >= iw*4
231	&& cinfo.output_height >= IH*4)	449	&& cinfo.output_height >= ih*4)
232	{	450	{
233	cinfo.scale_denom <<= 1;	451	cinfo.scale_denom <<= 1;
234	jpeg_calc_output_dimensions (&cinfo);	452	jpeg_calc_output_dimensions (&cinfo);
235	}	453	}
236	}	454	}
237		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
238	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);
239	if (!RETVAL)	466	if (!RETVAL)
240	longjmp (jerr.setjmp_buffer, 2);	467	longjmp (jerr.setjmp_buffer, 2);
241		468
242	data = gdk_pixbuf_get_pixels (RETVAL);	469	data = gdk_pixbuf_get_pixels (RETVAL);
243	rs = gdk_pixbuf_get_rowstride (RETVAL);	470	rs = gdk_pixbuf_get_rowstride (RETVAL);
244
245	if (cinfo.output_components != 3)
246	longjmp (jerr.setjmp_buffer, 3);
247		471
248	jpeg_start_decompress (&cinfo);	472	jpeg_start_decompress (&cinfo);
249		473
250	while (cinfo.output_scanline < cinfo.output_height)	474	while (cinfo.output_scanline < cinfo.output_height)
251	{	475	{
…		…
258	rp [3] = (guchar *)rp [2] + rs;	482	rp [3] = (guchar *)rp [2] + rs;
259		483
260	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	484	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
261	}	485	}
262		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
263	jpeg_finish_decompress (&cinfo);	516	jpeg_finish_decompress (&cinfo);
264	fclose (fp);	517	fclose (fp);
265	jpeg_destroy_decompress (&cinfo);	518	jpeg_destroy_decompress (&cinfo);
		519	perlinterp_acquire ();
266	}	520	}
267	OUTPUT:	521	OUTPUT:
268	RETVAL	522	RETVAL
269		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
270	#############################################################################	572	#############################################################################
271		573
272	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	574	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		575
		576	# currently only works for filenames (octet strings)
273		577
274	SV *	578	SV *
275	foldcase (SV *pathsv)	579	foldcase (SV *pathsv)
276	PROTOTYPE: $	580	PROTOTYPE: $
277	CODE:	581	CODE:
278	{	582	{
279	STRLEN plen;	583	STRLEN plen;
280	U8 *path = SvPVutf8 (pathsv, plen);	584	U8 path = (U8 )SvPV (pathsv, plen);
281	U8 *pend = path + plen;	585	U8 *pend = path + plen;
282	U8 dst [plen * 6 * 3], *dstp = dst;	586	U8 dst [plen * 6 * 3], *dstp = dst;
283		587
284	while (path < pend)	588	while (path < pend)
285	{	589	{
286	U8 ch = *path;	590	U8 ch = *path;
287		591
288	if (ch >= 'a' && ch <= 'z')	592	if (ch >= 'a' && ch <= 'z')
289	dstp++ = path++;	593	dstp++ = path++;
		594	else if (ch >= 'A' && ch <= 'Z')
		595	dstp++ = path++ + ('a' - 'A');
290	else if (ch >= '0' && ch <= '9')	596	else if (ch >= '0' && ch <= '9')
291	{	597	{
292	STRLEN el, nl = 0;	598	STRLEN el, nl = 0;
293	while (path >= '0' && path <= '9' && path < pend)	599	while (path >= '0' && path <= '9' && path < pend)
294	path++, nl++;	600	path++, nl++;
…		…
297	*dstp++ = '0';	603	*dstp++ = '0';
298		604
299	memcpy (dstp, path - nl, nl);	605	memcpy (dstp, path - nl, nl);
300	dstp += nl;	606	dstp += nl;
301	}	607	}
		608	else
		609	dstp++ = path++;
		610	#if 0
302	else	611	else
303	{	612	{
304	STRLEN cl;	613	STRLEN cl;
305	to_utf8_fold (path, dstp, &cl);	614	to_utf8_fold (path, dstp, &cl);
306	dstp += cl;	615	dstp += cl;
307	path += is_utf8_char (path);	616	path += is_utf8_char (path);
308	}	617	}
		618	#endif
309	}	619	}
310		620
311	RETVAL = newSVpvn (dst, dstp - dst);	621	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
312	}	622	}
313	OUTPUT:	623	OUTPUT:
314	RETVAL	624	RETVAL
315		625
316	GdkPixbuf_noinc *	626	GdkPixbuf_noinc *
317	p7_to_pb (int w, int h, guchar *src)	627	p7_to_pb (int w, int h, SV *src_sv)
318	PROTOTYPE: @	628	PROTOTYPE: @
319	CODE:	629	CODE:
320	{	630	{
321	int x, y;	631	int x, y;
322	guchar dst, d;	632	guchar dst, d;
323	int dstr;	633	int dstr;
		634	guchar src = (guchar )SvPVbyte_nolen (src_sv);
324		635
325	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	636	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
326	dst = gdk_pixbuf_get_pixels (RETVAL);	637	dst = gdk_pixbuf_get_pixels (RETVAL);
327	dstr = gdk_pixbuf_get_rowstride (RETVAL);	638	dstr = gdk_pixbuf_get_rowstride (RETVAL);
328		639
…		…
337	}	648	}
338	}	649	}
339	OUTPUT:	650	OUTPUT:
340	RETVAL	651	RETVAL
341		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
342	SV *	701	SV *
343	pb_to_p7 (GdkPixbuf *pb)	702	pb_to_hv84 (GdkPixbuf *pb)
344	CODE:	703	CODE:
345	{	704	{
346	int w = gdk_pixbuf_get_width (pb);	705	int w = gdk_pixbuf_get_width (pb);
347	int h = gdk_pixbuf_get_height (pb);	706	int h = gdk_pixbuf_get_height (pb);
348	int x, y;	707	int x, y;
349	guchar *dst;	708	guchar *dst;
350	int bpp = gdk_pixbuf_get_n_channels (pb);	709	int bpp = gdk_pixbuf_get_n_channels (pb);
351	guchar *src = gdk_pixbuf_get_pixels (pb);	710	guchar *src = gdk_pixbuf_get_pixels (pb);
352	int sstr = gdk_pixbuf_get_rowstride (pb);	711	int sstr = gdk_pixbuf_get_rowstride (pb);
353	int Er[IW], Eg[IW], Eb[IW];
354	int seed = 77;
355
356	RETVAL = newSV (w * h);
357	SvPOK_only (RETVAL);
358	SvCUR_set (RETVAL, w * h);
359
360	dst = SvPVX (RETVAL);
361
362	memset (Er, 0, sizeof (int) * IW);
363	memset (Eg, 0, sizeof (int) * IW);
364	memset (Eb, 0, sizeof (int) * IW);
365
366	/* some primitive error distribution + random dithering */
367
368	for (y = 0; y < h; y++)
369	{
370	int er = 0, eg = 0, eb = 0;
371
372	for (x = 0; x < w; x++)
373	{
374	int r, g, b;
375	guchar p = src + x bpp + y * sstr;
376
377	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
378	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
379	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
380
381	r = r > 7 ? 7 : r < 0 ? 0 : r;
382	g = g > 7 ? 7 : g < 0 ? 0 : g;
383	b = b > 3 ? 3 : b < 0 ? 0 : b;
384
385	er += p[0] - (r * 255 + 4) / 7;
386	eg += p[1] - (g * 255 + 4) / 7;
387	eb += p[2] - (b * 255 + 2) / 3;
388
389	Er[x] = er >> 1; er -= (er + 1) >> 1;
390	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
391	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
392
393	*dst++ = r << 5 \| g << 2 \| b;
394	}
395	}
396	}
397	OUTPUT:
398	RETVAL
399
400	#############################################################################
401
402	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
403
404	void
405	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
406	CODE:
407	{
408	int w = gdk_pixbuf_get_width (pb);
409	int h = gdk_pixbuf_get_height (pb);
410	int x, y, i;
411	guchar *dst;
412	int bpp = gdk_pixbuf_get_n_channels (pb);
413	guchar *src = gdk_pixbuf_get_pixels (pb);
414	int sstr = gdk_pixbuf_get_rowstride (pb);
415
416	a85_init ();
417
418	for (y = 0; y < h; y++)
419	for (x = 0; x < w; x++)
420	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
421	a85_push (fp, src [x * bpp + y * sstr + i]);
422
423	a85_finish (fp);
424	}
425
426	void
427	dump_binary (PerlIO fp, GdkPixbuf pb)
428	CODE:
429	{
430	int w = gdk_pixbuf_get_width (pb);
431	int h = gdk_pixbuf_get_height (pb);
432	int x, y, i;
433	guchar *dst;
434	int bpp = gdk_pixbuf_get_n_channels (pb);
435	guchar *src = gdk_pixbuf_get_pixels (pb);
436	int sstr = gdk_pixbuf_get_rowstride (pb);
437
438	for (y = 0; y < h; y++)
439	for (x = 0; x < w; x++)
440	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
441	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
442	}
443
444	#############################################################################
445
446	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
447
448	SV *
449	pb_to_hv84 (GdkPixbuf *pb)
450	CODE:
451	{
452	int w = gdk_pixbuf_get_width (pb);
453	int h = gdk_pixbuf_get_height (pb);
454	int x, y;
455	guchar *dst;
456	int bpp = gdk_pixbuf_get_n_channels (pb);
457	guchar *src = gdk_pixbuf_get_pixels (pb);
458	int sstr = gdk_pixbuf_get_rowstride (pb);
459		712
460	RETVAL = newSV (6 * 8 * 12 / 8);	713	RETVAL = newSV (6 * 8 * 12 / 8);
461	SvPOK_only (RETVAL);	714	SvPOK_only (RETVAL);
462	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	715	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
463		716
464	dst = SvPVX (RETVAL);	717	dst = (guchar *)SvPVX (RETVAL);
465		718
466	/* some primitive error distribution + random dithering */	719	/* some primitive error distribution + random dithering */
467		720
468	for (y = 0; y < h; y++)	721	for (y = 0; y < h; y++)
469	{	722	{
…		…
532	#############################################################################	785	#############################################################################
533		786
534	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	787	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
535		788
536	SV *	789	SV *
537	make_histograms (SV *ar)	790	extract_features (SV *ar)
538	CODE:	791	CODE:
539	{	792	{
540	int i;	793	int i;
541	AV av, result;	794	AV av, result;
542		795
543	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	796	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
544	croak ("Not an array ref as first argument to make_histogram");	797	croak ("Not an array ref as first argument to extract_features");
545		798
546	av = (AV *) SvRV (ar);	799	av = (AV *) SvRV (ar);
547	result = newAV ();	800	result = newAV ();
548		801
549	for (i = 0; i <= av_len (av); ++i)	802	for (i = 0; i <= av_len (av); ++i)
550	{	803	{
551	const int HISTSIZE = 64;
552
553	int j;
554	SV sv = av_fetch (av, i, 1);	804	SV sv = av_fetch (av, i, 1);
555	STRLEN len;
556	char *buf = SvPVbyte (sv, len);
557
558	int tmphist[HISTSIZE];
559	float *hist;
560
561	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	805	SV histsv = newSV (9 sizeof (float) + 1);
		806
562	SvPOK_on (histsv);	807	SvPOK_on (histsv);
563	SvCUR_set (histsv, HISTSIZE * sizeof (float));	808	SvCUR_set (histsv, 9 * sizeof (float));
564	hist = (float *)SvPVX (histsv);	809	float hist = (float )SvPVX (histsv);
565		810
566	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);
567		815
568	for (j = len; j--; )
569	{
570	unsigned int idx
571	= ((*buf & 0xc0) >> 2)
572	\| ((*buf & 0x18) >> 1)
573	\| (*buf & 0x03);
574
575	++tmphist[idx];
576	++buf;
577	}
578		816	{
579	for (j = 0; j < HISTSIZE; ++j)	817	STRLEN len;
580	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;
581		861
582	av_push (result, histsv);	862	av_push (result, histsv);
583	}	863	}
584		864
585	RETVAL = newRV_noinc ((SV *)result);	865	RETVAL = newRV_noinc ((SV *)result);
586	}	866	}
587	OUTPUT:	867	OUTPUT:
588	RETVAL	868	RETVAL
589		869
590

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Comparing CV/CV.xs (file contents): Revision 1.21 by root, Sat Jul 23 03:25:51 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 1.21 by root, Sat Jul 23 03:25:51 2005 UTC vs.
Revision 1.51 by root, Sat Dec 23 04:11:49 2017 UTC