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

Comparing CV/CV.xs (file contents):
Revision 1.20 by root, Fri Jul 22 06:14:25 2005 UTC vs.
Revision 1.52 by root, Sat Dec 23 04:25:50 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	if (!magic_cookie[0])
		238	{
		239	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		240	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		241	magic_load (magic_cookie[0], 0);
		242	magic_load (magic_cookie[1], 0);
		243	}
		244
		245	perlinterp_release ();
		246
		247	RETVAL = ix & 2
		248	? magic_buffer (magic_cookie[ix & 1], data, len)
		249	: magic_file (magic_cookie[ix & 1], data);
		250
		251	perlinterp_acquire ();
		252	}
		253	OUTPUT:
		254	RETVAL
		255
		256	# missing/broken in Gtk2 perl module
		257
		258	void
		259	gdk_window_clear_hints (GdkWindow *window)
		260	CODE:
		261	gdk_window_set_geometry_hints (window, 0, 0);
		262
		263	gboolean
		264	gdk_net_wm_supports (GdkAtom property)
		265	CODE:
		266	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		267	RETVAL = gdk_net_wm_supports (property);
		268	#else
		269	RETVAL = 0;
		270	#endif
		271	OUTPUT:
		272	RETVAL
		273
129	GdkPixbuf_noinc *	274	GdkPixbuf_noinc *
130	transpose (GdkPixbuf *pb)	275	dealpha_expose (GdkPixbuf *pb)
131	CODE:	276	CODE:
		277	perlinterp_release ();
132	{	278	{
133	int w = gdk_pixbuf_get_width (pb);	279	int w = gdk_pixbuf_get_width (pb);
134	int h = gdk_pixbuf_get_height (pb);	280	int h = gdk_pixbuf_get_height (pb);
135	int bpp = gdk_pixbuf_get_n_channels (pb);	281	int bpp = gdk_pixbuf_get_n_channels (pb);
136	int x, y, i;	282	int x, y, i;
137	guchar src = gdk_pixbuf_get_pixels (pb), dst;	283	guchar src = gdk_pixbuf_get_pixels (pb), dst;
138	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	284	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
139		285
140	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	286	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
141		287
142	dst = gdk_pixbuf_get_pixels (RETVAL);	288	dst = gdk_pixbuf_get_pixels (RETVAL);
143	dstr = gdk_pixbuf_get_rowstride (RETVAL);	289	dstr = gdk_pixbuf_get_rowstride (RETVAL);
144		290
145	for (y = 0; y < h; y++)
146	for (x = 0; x < w; x++)	291	for (x = 0; x < w; x++)
		292	for (y = 0; y < h; y++)
147	for (i = 0; i < bpp; i++)	293	for (i = 0; i < 3; i++)
148	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	294	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
149	}	295	}
		296	perlinterp_acquire ();
150	OUTPUT:	297	OUTPUT:
151	RETVAL	298	RETVAL
152		299
153	GdkPixbuf_noinc *	300	GdkPixbuf_noinc *
154	flop (GdkPixbuf *pb)	301	rotate (GdkPixbuf *pb, int angle)
155	CODE:	302	CODE:
156	{	303	perlinterp_release ();
157	int w = gdk_pixbuf_get_width (pb);	304	if (angle < 0)
158	int h = gdk_pixbuf_get_height (pb);	305	angle += 360;
159	int bpp = gdk_pixbuf_get_n_channels (pb);	306	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
160	int x, y, i;	307	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
161	guchar src = gdk_pixbuf_get_pixels (pb), dst;	308	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
162	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	309	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
163		310	: angle);
164	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	311	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:	312	OUTPUT:
175	RETVAL	313	RETVAL
176		314
177	GdkPixbuf_noinc *	315	GdkPixbuf_noinc *
178	load_jpeg (char *path, int thumbnail=0)	316	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		317	CODE:
		318	{
		319	#if WEBP
		320	guchar *data;
		321	STRLEN data_size;
		322	int alpha;
		323	WebPDecoderConfig config;
		324	int inw, inh;
		325
		326	data = SvPVbyte (image_data, data_size);
		327
		328	perlinterp_release ();
		329
		330	RETVAL = 0;
		331
		332	if (!WebPInitDecoderConfig (&config))
		333	goto err;
		334
		335	config.options.use_threads = 1;
		336
		337	if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK)
		338	goto err;
		339
		340	inw = config.input.width;
		341	inh = config.input.height;
		342
		343	if (thumbnail)
		344	{
		345	if (inw * ih > inh * iw)
		346	ih = (iw * inh + inw - 1) / inw;
		347	else
		348	iw = (ih * inw + inh - 1) / inh;
		349
		350	config.options.bypass_filtering = 1;
		351	config.options.no_fancy_upsampling = 1;
		352
		353	config.options.use_scaling = 1;
		354	config.options.scaled_width = iw;
		355	config.options.scaled_height = ih;
		356	}
		357	else
		358	{
		359	iw = inw;
		360	ih = inh;
		361	}
		362
		363	alpha = config.input.has_alpha;
		364
		365	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih);
		366	if (!RETVAL)
		367	goto err;
		368
		369	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		370	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		371	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		372	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		373	config.output.is_external_memory = 1;
		374
		375	if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK)
		376	{
		377	g_object_unref (RETVAL);
		378	RETVAL = 0;
		379	goto err;
		380	}
		381
		382	err:
		383	perlinterp_acquire ();
		384	#else
		385	croak ("load_webp: webp not enabled at compile time");
		386	#endif
		387	}
		388	OUTPUT:
		389	RETVAL
		390
		391	GdkPixbuf_noinc *
		392	load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0)
179	CODE:	393	CODE:
180	{	394	{
181	struct jpeg_decompress_struct cinfo;	395	struct jpeg_decompress_struct cinfo;
182	struct jpg_err_mgr jerr;	396	struct jpg_err_mgr jerr;
183	guchar *data;	397	guchar *data;
184	int rs;	398	int rs;
185	FILE *fp;	399	FILE *fp;
186	volatile GdkPixbuf *pb = 0;	400	volatile GdkPixbuf *pb = 0;
		401
187	RETVAL = 0;	402	RETVAL = 0;
188		403
189	if (!(fp = fopen (path, "rb")))	404	fp = fopen (SvPVbyte_nolen (path), "rb");
		405
		406	if (!fp)
190	XSRETURN_UNDEF;	407	XSRETURN_UNDEF;
		408
		409	perlinterp_release ();
191		410
192	cinfo.err = jpeg_std_error (&jerr.err);	411	cinfo.err = jpeg_std_error (&jerr.err);
193		412
194	jerr.err.error_exit = cv_error_exit;	413	jerr.err.error_exit = cv_error_exit;
195	jerr.err.output_message = cv_error_output;	414	jerr.err.output_message = cv_error_output;
…		…
200	jpeg_destroy_decompress (&cinfo);	419	jpeg_destroy_decompress (&cinfo);
201		420
202	if (pb)	421	if (pb)
203	g_object_unref ((gpointer)pb);	422	g_object_unref ((gpointer)pb);
204		423
		424	perlinterp_acquire ();
205	XSRETURN_UNDEF;	425	XSRETURN_UNDEF;
206	}	426	}
207		427
208	jpeg_create_decompress (&cinfo);	428	jpeg_create_decompress (&cinfo);
209		429
…		…
225	{	445	{
226	cinfo.dct_method = JDCT_FASTEST;	446	cinfo.dct_method = JDCT_FASTEST;
227	cinfo.do_fancy_upsampling = FALSE;	447	cinfo.do_fancy_upsampling = FALSE;
228		448
229	while (cinfo.scale_denom < 8	449	while (cinfo.scale_denom < 8
230	&& (cinfo.output_width >> 1) >= IW	450	&& cinfo.output_width >= iw*4
231	&& (cinfo.output_height >> 1) >= IH)	451	&& cinfo.output_height >= ih*4)
232	{	452	{
233	cinfo.scale_denom <<= 1;	453	cinfo.scale_denom <<= 1;
234	jpeg_calc_output_dimensions (&cinfo);	454	jpeg_calc_output_dimensions (&cinfo);
235	}	455	}
236	}	456	}
237		457
		458	if (cinfo.output_components != 3)
		459	longjmp (jerr.setjmp_buffer, 3);
		460
		461	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		462	{
		463	cinfo.out_color_space = JCS_CMYK;
		464	cinfo.output_components = 4;
		465	}
		466
238	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	467	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
239	if (!RETVAL)	468	if (!RETVAL)
240	longjmp (jerr.setjmp_buffer, 2);	469	longjmp (jerr.setjmp_buffer, 2);
241		470
242	data = gdk_pixbuf_get_pixels (RETVAL);	471	data = gdk_pixbuf_get_pixels (RETVAL);
243	rs = gdk_pixbuf_get_rowstride (RETVAL);	472	rs = gdk_pixbuf_get_rowstride (RETVAL);
244
245	if (cinfo.output_components != 3)
246	longjmp (jerr.setjmp_buffer, 3);
247		473
248	jpeg_start_decompress (&cinfo);	474	jpeg_start_decompress (&cinfo);
249		475
250	while (cinfo.output_scanline < cinfo.output_height)	476	while (cinfo.output_scanline < cinfo.output_height)
251	{	477	{
…		…
258	rp [3] = (guchar *)rp [2] + rs;	484	rp [3] = (guchar *)rp [2] + rs;
259		485
260	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	486	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
261	}	487	}
262		488
		489	if (cinfo.out_color_space == JCS_CMYK)
		490	{
		491	guchar end = data + cinfo.output_height rs;
		492
		493	while (data < end)
		494	{
		495	U32 c = data [0];
		496	U32 m = data [1];
		497	U32 y = data [2];
		498	U32 k = data [3];
		499
		500	if (0)
		501	if (cinfo.Adobe_transform == 2)
		502	{
		503	c ^= 0xff;
		504	m ^= 0xff;
		505	y ^= 0xff;
		506	k ^= 0xff;
		507	}
		508
		509	data [0] = (c * k + 0x80) / 0xff;
		510	data [1] = (m * k + 0x80) / 0xff;
		511	data [2] = (y * k + 0x80) / 0xff;
		512	data [3] = 0xff;
		513
		514	data += 4;
		515	}
		516	}
		517
263	jpeg_finish_decompress (&cinfo);	518	jpeg_finish_decompress (&cinfo);
264	fclose (fp);	519	fclose (fp);
265	jpeg_destroy_decompress (&cinfo);	520	jpeg_destroy_decompress (&cinfo);
		521	perlinterp_acquire ();
266	}	522	}
267	OUTPUT:	523	OUTPUT:
268	RETVAL	524	RETVAL
269		525
		526	void
		527	compare (GdkPixbuf a, GdkPixbuf b)
		528	PPCODE:
		529	perlinterp_release ();
		530	{
		531	int w = gdk_pixbuf_get_width (a);
		532	int h = gdk_pixbuf_get_height (a);
		533
		534	int sa = gdk_pixbuf_get_rowstride (a);
		535	int sb = gdk_pixbuf_get_rowstride (b);
		536
		537	guchar *pa = gdk_pixbuf_get_pixels (a);
		538	guchar *pb = gdk_pixbuf_get_pixels (b);
		539
		540	int x, y;
		541
		542	assert (w == gdk_pixbuf_get_width (b));
		543	assert (h == gdk_pixbuf_get_height (b));
		544
		545	assert (gdk_pixbuf_get_n_channels (a) == 3);
		546	assert (gdk_pixbuf_get_n_channels (b) == 3);
		547
		548	double diff = 0.;
		549	int peak = 0;
		550
		551	if (w && h)
		552	for (y = 0; y < h; y++)
		553	{
		554	guchar pa_ = pa + y sa;
		555	guchar pb_ = pb + y sb;
		556
		557	for (x = 0; x < w; x++)
		558	{
		559	int d;
		560
		561	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		562	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		563	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		564	}
		565	}
		566
		567	perlinterp_acquire ();
		568
		569	EXTEND (SP, 2);
		570	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		571	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		572	}
		573
270	#############################################################################	574	#############################################################################
271		575
272	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	576	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		577
		578	# currently only works for filenames (octet strings)
273		579
274	SV *	580	SV *
275	foldcase (SV *pathsv)	581	foldcase (SV *pathsv)
276	PROTOTYPE: $	582	PROTOTYPE: $
277	CODE:	583	CODE:
278	{	584	{
279	STRLEN plen;	585	STRLEN plen;
280	U8 *path = SvPVutf8 (pathsv, plen);	586	U8 path = (U8 )SvPV (pathsv, plen);
281	U8 *pend = path + plen;	587	U8 *pend = path + plen;
282	U8 dst [plen * 6 * 3], *dstp = dst;	588	U8 dst [plen * 6 * 3], *dstp = dst;
283		589
284	while (path < pend)	590	while (path < pend)
285	{	591	{
286	U8 ch = *path;	592	U8 ch = *path;
287		593
288	if (ch >= 'a' && ch <= 'z')	594	if (ch >= 'a' && ch <= 'z')
289	dstp++ = path++;	595	dstp++ = path++;
		596	else if (ch >= 'A' && ch <= 'Z')
		597	dstp++ = path++ + ('a' - 'A');
290	else if (ch >= '0' && ch <= '9')	598	else if (ch >= '0' && ch <= '9')
291	{	599	{
292	STRLEN el, nl = 0;	600	STRLEN el, nl = 0;
293	while (path >= '0' && path <= '9' && path < pend)	601	while (path >= '0' && path <= '9' && path < pend)
294	path++, nl++;	602	path++, nl++;
…		…
297	*dstp++ = '0';	605	*dstp++ = '0';
298		606
299	memcpy (dstp, path - nl, nl);	607	memcpy (dstp, path - nl, nl);
300	dstp += nl;	608	dstp += nl;
301	}	609	}
		610	else
		611	dstp++ = path++;
		612	#if 0
302	else	613	else
303	{	614	{
304	STRLEN cl;	615	STRLEN cl;
305	to_utf8_fold (path, dstp, &cl);	616	to_utf8_fold (path, dstp, &cl);
306	dstp += cl;	617	dstp += cl;
307	path += is_utf8_char (path);	618	path += is_utf8_char (path);
308	}	619	}
		620	#endif
309	}	621	}
310		622
311	RETVAL = newSVpvn (dst, dstp - dst);	623	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
312	}	624	}
313	OUTPUT:	625	OUTPUT:
314	RETVAL	626	RETVAL
315		627
316	GdkPixbuf_noinc *	628	GdkPixbuf_noinc *
317	p7_to_pb (int w, int h, guchar *src)	629	p7_to_pb (int w, int h, SV *src_sv)
		630	PROTOTYPE: @
318	CODE:	631	CODE:
319	{	632	{
320	int x, y;	633	int x, y;
321	guchar dst, d;	634	guchar dst, d;
322	int dstr;	635	int dstr;
		636	guchar src = (guchar )SvPVbyte_nolen (src_sv);
323		637
324	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	638	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
325	dst = gdk_pixbuf_get_pixels (RETVAL);	639	dst = gdk_pixbuf_get_pixels (RETVAL);
326	dstr = gdk_pixbuf_get_rowstride (RETVAL);	640	dstr = gdk_pixbuf_get_rowstride (RETVAL);
327		641
…		…
336	}	650	}
337	}	651	}
338	OUTPUT:	652	OUTPUT:
339	RETVAL	653	RETVAL
340		654
		655	#############################################################################
		656
		657	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		658
		659	void
		660	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		661	CODE:
		662	{
		663	int w = gdk_pixbuf_get_width (pb);
		664	int h = gdk_pixbuf_get_height (pb);
		665	int x, y, i;
		666	guchar *dst;
		667	int bpp = gdk_pixbuf_get_n_channels (pb);
		668	guchar *src = gdk_pixbuf_get_pixels (pb);
		669	int sstr = gdk_pixbuf_get_rowstride (pb);
		670
		671	a85_init ();
		672
		673	for (y = 0; y < h; y++)
		674	for (x = 0; x < w; x++)
		675	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		676	a85_push (fp, src [x * bpp + y * sstr + i]);
		677
		678	a85_finish (fp);
		679	}
		680
		681	void
		682	dump_binary (PerlIO fp, GdkPixbuf pb)
		683	CODE:
		684	{
		685	int w = gdk_pixbuf_get_width (pb);
		686	int h = gdk_pixbuf_get_height (pb);
		687	int x, y, i;
		688	guchar *dst;
		689	int bpp = gdk_pixbuf_get_n_channels (pb);
		690	guchar *src = gdk_pixbuf_get_pixels (pb);
		691	int sstr = gdk_pixbuf_get_rowstride (pb);
		692
		693	for (y = 0; y < h; y++)
		694	for (x = 0; x < w; x++)
		695	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		696	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		697	}
		698
		699	#############################################################################
		700
		701	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		702
341	SV *	703	SV *
342	pb_to_p7 (GdkPixbuf *pb)	704	pb_to_hv84 (GdkPixbuf *pb)
343	CODE:	705	CODE:
344	{	706	{
345	int w = gdk_pixbuf_get_width (pb);	707	int w = gdk_pixbuf_get_width (pb);
346	int h = gdk_pixbuf_get_height (pb);	708	int h = gdk_pixbuf_get_height (pb);
347	int x, y;	709	int x, y;
348	guchar *dst;	710	guchar *dst;
349	int bpp = gdk_pixbuf_get_n_channels (pb);	711	int bpp = gdk_pixbuf_get_n_channels (pb);
350	guchar *src = gdk_pixbuf_get_pixels (pb);	712	guchar *src = gdk_pixbuf_get_pixels (pb);
351	int sstr = gdk_pixbuf_get_rowstride (pb);	713	int sstr = gdk_pixbuf_get_rowstride (pb);
352	int Er[IW], Eg[IW], Eb[IW];
353	int seed = 77;
354
355	RETVAL = newSV (w * h);
356	SvPOK_only (RETVAL);
357	SvCUR_set (RETVAL, w * h);
358
359	dst = SvPVX (RETVAL);
360
361	memset (Er, 0, sizeof (int) * IW);
362	memset (Eg, 0, sizeof (int) * IW);
363	memset (Eb, 0, sizeof (int) * IW);
364
365	/* some primitive error distribution + random dithering */
366
367	for (y = 0; y < h; y++)
368	{
369	int er = 0, eg = 0, eb = 0;
370
371	for (x = 0; x < w; x++)
372	{
373	int r, g, b;
374	guchar p = src + x bpp + y * sstr;
375
376	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
377	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
378	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
379
380	r = r > 7 ? 7 : r < 0 ? 0 : r;
381	g = g > 7 ? 7 : g < 0 ? 0 : g;
382	b = b > 3 ? 3 : b < 0 ? 0 : b;
383
384	er += p[0] - (r * 255 + 4) / 7;
385	eg += p[1] - (g * 255 + 4) / 7;
386	eb += p[2] - (b * 255 + 2) / 3;
387
388	Er[x] = er >> 1; er -= (er + 1) >> 1;
389	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
390	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
391
392	*dst++ = r << 5 \| g << 2 \| b;
393	}
394	}
395	}
396	OUTPUT:
397	RETVAL
398
399	#############################################################################
400
401	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
402
403	void
404	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
405	CODE:
406	{
407	int w = gdk_pixbuf_get_width (pb);
408	int h = gdk_pixbuf_get_height (pb);
409	int x, y, i;
410	guchar *dst;
411	int bpp = gdk_pixbuf_get_n_channels (pb);
412	guchar *src = gdk_pixbuf_get_pixels (pb);
413	int sstr = gdk_pixbuf_get_rowstride (pb);
414
415	a85_init ();
416
417	for (y = 0; y < h; y++)
418	for (x = 0; x < w; x++)
419	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
420	a85_push (fp, src [x * bpp + y * sstr + i]);
421
422	a85_finish (fp);
423	}
424
425	void
426	dump_binary (PerlIO fp, GdkPixbuf pb)
427	CODE:
428	{
429	int w = gdk_pixbuf_get_width (pb);
430	int h = gdk_pixbuf_get_height (pb);
431	int x, y, i;
432	guchar *dst;
433	int bpp = gdk_pixbuf_get_n_channels (pb);
434	guchar *src = gdk_pixbuf_get_pixels (pb);
435	int sstr = gdk_pixbuf_get_rowstride (pb);
436
437	for (y = 0; y < h; y++)
438	for (x = 0; x < w; x++)
439	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
440	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
441	}
442
443	#############################################################################
444
445	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
446
447	SV *
448	pb_to_hv84 (GdkPixbuf *pb)
449	CODE:
450	{
451	int w = gdk_pixbuf_get_width (pb);
452	int h = gdk_pixbuf_get_height (pb);
453	int x, y;
454	guchar *dst;
455	int bpp = gdk_pixbuf_get_n_channels (pb);
456	guchar *src = gdk_pixbuf_get_pixels (pb);
457	int sstr = gdk_pixbuf_get_rowstride (pb);
458		714
459	RETVAL = newSV (6 * 8 * 12 / 8);	715	RETVAL = newSV (6 * 8 * 12 / 8);
460	SvPOK_only (RETVAL);	716	SvPOK_only (RETVAL);
461	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	717	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
462		718
463	dst = SvPVX (RETVAL);	719	dst = (guchar *)SvPVX (RETVAL);
464		720
465	/* some primitive error distribution + random dithering */	721	/* some primitive error distribution + random dithering */
466		722
467	for (y = 0; y < h; y++)	723	for (y = 0; y < h; y++)
468	{	724	{
…		…
531	#############################################################################	787	#############################################################################
532		788
533	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	789	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
534		790
535	SV *	791	SV *
536	make_histograms (SV *ar)	792	extract_features (SV *ar)
537	CODE:	793	CODE:
538	{	794	{
539	int i;	795	int i;
540	AV av, result;	796	AV av, result;
541		797
542	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	798	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
543	croak ("Not an array ref as first argument to make_histogram");	799	croak ("Not an array ref as first argument to extract_features");
544		800
545	av = (AV *) SvRV (ar);	801	av = (AV *) SvRV (ar);
546	result = newAV ();	802	result = newAV ();
547		803
548	for (i = 0; i <= av_len (av); ++i)	804	for (i = 0; i <= av_len (av); ++i)
549	{	805	{
550	const int HISTSIZE = 64;
551
552	int j;
553	SV sv = av_fetch (av, i, 1);	806	SV sv = av_fetch (av, i, 1);
554	STRLEN len;
555	char *buf = SvPVbyte (sv, len);
556
557	int tmphist[HISTSIZE];
558	float *hist;
559
560	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	807	SV histsv = newSV (9 sizeof (float) + 1);
		808
561	SvPOK_on (histsv);	809	SvPOK_on (histsv);
562	SvCUR_set (histsv, HISTSIZE * sizeof (float));	810	SvCUR_set (histsv, 9 * sizeof (float));
563	hist = (float *)SvPVX (histsv);	811	float hist = (float )SvPVX (histsv);
564		812
565	Zero (tmphist, sizeof (tmphist), char);	813	struct feature f_h, f_s, f_v;
		814	feature_init (&f_h);
		815	feature_init (&f_s);
		816	feature_init (&f_v);
566		817
567	for (j = len; j--; )
568	{
569	unsigned int idx
570	= ((*buf & 0xc0) >> 2)
571	\| ((*buf & 0x18) >> 1)
572	\| (*buf & 0x03);
573
574	++tmphist[idx];
575	++buf;
576	}
577		818	{
578	for (j = 0; j < HISTSIZE; ++j)	819	STRLEN len;
579	hist[j] = (float)tmphist[j] / (len + 1e-30);	820	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		821	while (len >= 3)
		822	{
		823	unsigned int r, g, b, h, s, v;
		824	r = buf++; g = buf++; b = *buf++;
		825	rgb_to_hsv (r, g, b, &h, &s, &v);
		826
		827	feature_update_pass_1 (&f_h, h);
		828	feature_update_pass_1 (&f_s, s);
		829	feature_update_pass_1 (&f_v, v);
		830
		831	len -= 3;
		832	}
		833
		834	feature_finish_pass_1 (&f_h);
		835	feature_finish_pass_1 (&f_s);
		836	feature_finish_pass_1 (&f_v);
		837	}
		838
		839	{
		840	STRLEN len;
		841	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		842	while (len >= 3)
		843	{
		844	unsigned int r, g, b, h, s, v;
		845	r = buf++; g = buf++; b = *buf++;
		846	rgb_to_hsv (r, g, b, &h, &s, &v);
		847
		848	feature_update_pass_2 (&f_h, h);
		849	feature_update_pass_2 (&f_s, s);
		850	feature_update_pass_2 (&f_v, v);
		851
		852	len -= 3;
		853	}
		854
		855	feature_finish_pass_2 (&f_h);
		856	feature_finish_pass_2 (&f_s);
		857	feature_finish_pass_2 (&f_v);
		858	}
		859
		860	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		861	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		862	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
580		863
581	av_push (result, histsv);	864	av_push (result, histsv);
582	}	865	}
583		866
584	RETVAL = newRV_noinc ((SV *)result);	867	RETVAL = newRV_noinc ((SV *)result);
585	}	868	}
586	OUTPUT:	869	OUTPUT:
587	RETVAL	870	RETVAL
588		871
589

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Comparing CV/CV.xs (file contents): Revision 1.20 by root, Fri Jul 22 06:14:25 2005 UTC vs. Revision 1.52 by root, Sat Dec 23 04:25:50 2017 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.20 by root, Fri Jul 22 06:14:25 2005 UTC vs.
Revision 1.52 by root, Sat Dec 23 04:25:50 2017 UTC