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

Comparing CV/CV.xs (file contents):
Revision 1.7 by root, Wed Nov 12 23:54:54 2003 UTC vs.
Revision 1.39 by root, Fri Jun 23 09:09:14 2006 UTC

…		…
1	#include "EXTERN.h"	1	#include "EXTERN.h"
2	#include "perl.h"	2	#include "perl.h"
3	#include "XSUB.h"	3	#include "XSUB.h"
4		4
		5	#include <string.h>
		6	#include <setjmp.h>
		7	#include <math.h>
		8
		9	#include <magic.h>
		10
		11	#include <jpeglib.h>
		12	#include <glib.h>
		13	#include <gtk/gtk.h>
5	#include <gdk-pixbuf/gdk-pixbuf.h>	14	#include <gdk-pixbuf/gdk-pixbuf.h>
6		15
7	#include <gperl.h>	16	#include <gperl.h>
8	#include <gtk2perl.h>	17	#include <gtk2perl.h>
9		18
10	#define IW 80	19	#define IW 80 /* MUST match Schnauzer.pm! */
		20	#define IH 60 /* MUST match Schnauzer.pm! */
11		21
12	#define RAND (seed = (seed + 7141) * 54773 % 134456)	22	#define RAND (seed = (seed + 7141) * 54773 % 134456)
13		23
14	#define LINELENGTH 240	24	#define LINELENGTH 240
15		25
16	#define ELLIPSIS "\xe2\x80\xa6"	26	#define ELLIPSIS "\xe2\x80\xa6"
		27
		28	struct jpg_err_mgr
		29	{
		30	struct jpeg_error_mgr err;
		31	jmp_buf setjmp_buffer;
		32	};
		33
		34	static void
		35	cv_error_exit (j_common_ptr cinfo)
		36	{
		37	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
		38	}
		39
		40	static void
		41	cv_error_output (j_common_ptr cinfo)
		42	{
		43	return;
		44	}
		45
		46	static void
		47	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
		48	unsigned int h, unsigned int s, unsigned int *v)
		49	{
		50	unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
		51	unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
		52	unsigned int delta = mx - mn;
		53
		54	*v = mx;
		55
		56	s = mx ? delta 255 / mx : 0;
		57
		58	if (delta == 0)
		59	*h = 0;
		60	else
		61	{
		62	if (r == mx)
		63	h = ((int)g - (int)b) 255 / (int)(delta * 3);
		64	else if (g == mx)
		65	h = ((int)b - (int)r) 255 / (int)(delta * 3) + 52;
		66	else if (b == mx)
		67	h = ((int)r - (int)g) 255 / (int)(delta * 3) + 103;
		68
		69	*h &= 255;
		70	}
		71	}
		72
		73	struct feature {
		74	float v1, v2, v3; // mean, square, cube
		75	int n;
		76	};
		77
		78	static void
		79	feature_init (struct feature *f)
		80	{
		81	f->v1 = 0.;
		82	f->v2 = 0.;
		83	f->v3 = 0.;
		84	f->n = 0;
		85	}
		86
		87	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		88	// elmex ist schuld.
		89	static void
		90	feature_update_pass_1 (struct feature *f, unsigned int v)
		91	{
		92	f->v1 += v;
		93	f->n += 1;
		94	}
		95
		96	static void
		97	feature_finish_pass_1 (struct feature *f)
		98	{
		99	if (f->n < 1)
		100	return;
		101
		102	f->v1 /= f->n;
		103	}
		104
		105	static void
		106	feature_update_pass_2 (struct feature *f, unsigned int v)
		107	{
		108	float d = v - f->v1;
		109
		110	f->v2 += d * d;
		111	f->v3 += d * d * d;
		112	}
		113
		114	static void
		115	feature_finish_pass_2 (struct feature *f)
		116	{
		117	if (f->n < 1)
		118	return;
		119
		120	f->v2 /= f->n;
		121	f->v3 /= f->n;
		122
		123	f->v1 /= 255.;
		124	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		125	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		126	}
17		127
18	static guint32 a85_val;	128	static guint32 a85_val;
19	static guint a85_cnt;	129	static guint a85_cnt;
20	static guchar a85_buf[LINELENGTH], *a85_ptr;	130	static guchar a85_buf[LINELENGTH], *a85_ptr;
21		131
55	}	165	}
56	}	166	}
57		167
58	}	168	}
59		169
		170	static void
60	a85_finish (PerlIO *fp)	171	a85_finish (PerlIO *fp)
61	{	172	{
62	while (a85_cnt != 4)	173	while (a85_cnt != 4)
63	a85_push (fp, 0);	174	a85_push (fp, 0);
64		175
…		…
69	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	180	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
70	}	181	}
71		182
72	/////////////////////////////////////////////////////////////////////////////	183	/////////////////////////////////////////////////////////////////////////////
73		184
74	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow	185	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
75		186
76	PROTOTYPES: ENABLE	187	PROTOTYPES: ENABLE
77		188
		189	# missing function in perl. really :)
		190	int
		191	common_prefix_length (a, b)
		192	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		193	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		194	CODE:
		195	RETVAL = 0;
		196
		197	while (a == b && *a)
		198	{
		199	RETVAL += (*a & 0xc0) != 0x80;
		200	a++, b++;
		201	}
		202
		203	OUTPUT:
		204	RETVAL
		205
		206	const char *
		207	magic (const char *path)
		208	CODE:
		209	{
		210	static magic_t cookie;
		211
		212	if (!cookie)
		213	{
		214	cookie = magic_open (MAGIC_NONE);
		215
		216	if (cookie)
		217	magic_load (cookie, 0);
		218	else
		219	XSRETURN_UNDEF;
		220	}
		221
		222	RETVAL = magic_file (cookie, path);
		223	}
		224	OUTPUT:
		225	RETVAL
		226
		227	const char *
		228	magic_mime (const char *path)
		229	CODE:
		230	{
		231	static magic_t cookie;
		232
		233	if (!cookie)
		234	{
		235	cookie = magic_open (MAGIC_MIME);
		236
		237	if (cookie)
		238	magic_load (cookie, 0);
		239	else
		240	XSRETURN_UNDEF;
		241	}
		242
		243	RETVAL = magic_file (cookie, path);
		244	}
		245	OUTPUT:
		246	RETVAL
		247
		248	# missing in Gtk2 perl module
		249
		250	gboolean
		251	gdk_net_wm_supports (GdkAtom property)
		252	CODE:
		253	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		254	RETVAL = gdk_net_wm_supports (property);
		255	#else
		256	RETVAL = 0;
		257	#endif
		258	OUTPUT:
		259	RETVAL
		260
78	GdkPixbuf_noinc *	261	GdkPixbuf_noinc *
79	transpose (GdkPixbuf *pb)	262	dealpha_expose (GdkPixbuf *pb)
80	CODE:	263	CODE:
81	{	264	{
82	int w = gdk_pixbuf_get_width (pb);	265	int w = gdk_pixbuf_get_width (pb);
83	int h = gdk_pixbuf_get_height (pb);	266	int h = gdk_pixbuf_get_height (pb);
84	int bpp = gdk_pixbuf_get_n_channels (pb);	267	int bpp = gdk_pixbuf_get_n_channels (pb);
85	int x, y, i;	268	int x, y, i;
86	guchar src = gdk_pixbuf_get_pixels (pb), dst;	269	guchar src = gdk_pixbuf_get_pixels (pb), dst;
87	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	270	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
88		271
89	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	272	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
90		273
91	dst = gdk_pixbuf_get_pixels (RETVAL);	274	dst = gdk_pixbuf_get_pixels (RETVAL);
92	dstr = gdk_pixbuf_get_rowstride (RETVAL);	275	dstr = gdk_pixbuf_get_rowstride (RETVAL);
93		276
94	for (y = 0; y < h; y++)
95	for (x = 0; x < w; x++)	277	for (x = 0; x < w; x++)
		278	for (y = 0; y < h; y++)
96	for (i = 0; i < bpp; i++)	279	for (i = 0; i < 3; i++)
97	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	280	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
98	}	281	}
99	OUTPUT:	282	OUTPUT:
100	RETVAL	283	RETVAL
101		284
102	GdkPixbuf_noinc *	285	GdkPixbuf_noinc *
103	flop (GdkPixbuf *pb)	286	rotate (GdkPixbuf *pb, int angle)
104	CODE:	287	CODE:
105	{	288	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
106	int w = gdk_pixbuf_get_width (pb);	289	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
107	int h = gdk_pixbuf_get_height (pb);	290	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
108	int bpp = gdk_pixbuf_get_n_channels (pb);	291	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
109	int x, y, i;	292	: angle);
110	guchar src = gdk_pixbuf_get_pixels (pb), dst;	293	OUTPUT:
111	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	294	RETVAL
112		295
113	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	296	GdkPixbuf_noinc *
		297	load_jpeg (SV *path, int thumbnail=0)
		298	CODE:
		299	{
		300	struct jpeg_decompress_struct cinfo;
		301	struct jpg_err_mgr jerr;
		302	guchar *data;
		303	int rs;
		304	FILE *fp;
		305	volatile GdkPixbuf *pb = 0;
114		306
		307	RETVAL = 0;
		308
		309	fp = fopen (SvPVbyte_nolen (path), "rb");
		310
		311	if (!fp)
		312	XSRETURN_UNDEF;
		313
		314	cinfo.err = jpeg_std_error (&jerr.err);
		315
		316	jerr.err.error_exit = cv_error_exit;
		317	jerr.err.output_message = cv_error_output;
		318
		319	if ((rs = setjmp (jerr.setjmp_buffer)))
		320	{
		321	fclose (fp);
		322	jpeg_destroy_decompress (&cinfo);
		323
		324	if (pb)
		325	g_object_unref ((gpointer)pb);
		326
		327	XSRETURN_UNDEF;
		328	}
		329
		330	jpeg_create_decompress (&cinfo);
		331
		332	jpeg_stdio_src (&cinfo, fp);
		333	jpeg_read_header (&cinfo, TRUE);
		334
		335	cinfo.dct_method = JDCT_DEFAULT;
		336	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		337	cinfo.do_block_smoothing = FALSE;
		338	cinfo.out_color_space = JCS_RGB;
		339	cinfo.quantize_colors = FALSE;
		340
		341	cinfo.scale_num = 1;
		342	cinfo.scale_denom = 1;
		343
		344	jpeg_calc_output_dimensions (&cinfo);
		345
		346	if (thumbnail)
		347	{
		348	cinfo.dct_method = JDCT_FASTEST;
		349	cinfo.do_fancy_upsampling = FALSE;
		350
		351	while (cinfo.scale_denom < 8
		352	&& cinfo.output_width >= IW*4
		353	&& cinfo.output_height >= IH*4)
		354	{
		355	cinfo.scale_denom <<= 1;
		356	jpeg_calc_output_dimensions (&cinfo);
		357	}
		358	}
		359
		360	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
		361	if (!RETVAL)
		362	longjmp (jerr.setjmp_buffer, 2);
		363
115	dst = gdk_pixbuf_get_pixels (RETVAL);	364	data = gdk_pixbuf_get_pixels (RETVAL);
116	dstr = gdk_pixbuf_get_rowstride (RETVAL);	365	rs = gdk_pixbuf_get_rowstride (RETVAL);
117		366
		367	if (cinfo.output_components != 3)
		368	longjmp (jerr.setjmp_buffer, 3);
		369
		370	jpeg_start_decompress (&cinfo);
		371
		372	while (cinfo.output_scanline < cinfo.output_height)
		373	{
		374	int remaining = cinfo.output_height - cinfo.output_scanline;
		375	JSAMPROW rp[4];
		376
		377	rp [0] = data + cinfo.output_scanline * rs;
		378	rp [1] = (guchar *)rp [0] + rs;
		379	rp [2] = (guchar *)rp [1] + rs;
		380	rp [3] = (guchar *)rp [2] + rs;
		381
		382	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		383	}
		384
		385	jpeg_finish_decompress (&cinfo);
		386	fclose (fp);
		387	jpeg_destroy_decompress (&cinfo);
		388	}
		389	OUTPUT:
		390	RETVAL
		391
		392	void
		393	compare (GdkPixbuf a, GdkPixbuf b)
		394	PPCODE:
		395	{
		396	int w = gdk_pixbuf_get_width (a);
		397	int h = gdk_pixbuf_get_height (a);
		398	int sa = gdk_pixbuf_get_rowstride (a);
		399	int sb = gdk_pixbuf_get_rowstride (b);
		400
		401	guchar *pa = gdk_pixbuf_get_pixels (a);
		402	guchar *pb = gdk_pixbuf_get_pixels (b);
		403
		404	int x, y;
		405
		406	assert (w == gdk_pixbuf_get_width (b));
		407	assert (h == gdk_pixbuf_get_height (b));
		408
		409	assert (gdk_pixbuf_get_n_channels (a) == 3);
		410	assert (gdk_pixbuf_get_n_channels (b) == 3);
		411
		412	double diff = 0.;
		413	int peak = 0;
		414
		415	if (w && h)
118	for (y = 0; y < h; y++)	416	for (y = 0; y < h; y++)
		417	{
		418	guchar pa_ = pa + y sa;
		419	guchar pb_ = pb + y sb;
		420
119	for (x = 0; x < w; x++)	421	for (x = 0; x < w; x++)
120	for (i = 0; i < bpp; i++)	422	{
121	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];	423	int d;
		424
		425	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		426	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		427	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		428	}
		429	}
		430
		431	EXTEND (SP, 2);
		432	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		433	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
122	}	434	}
123	OUTPUT:
124	RETVAL
125		435
126	#############################################################################	436	#############################################################################
127		437
128	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	438	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
129		439
		440	SV *
		441	foldcase (SV *pathsv)
		442	PROTOTYPE: $
		443	CODE:
		444	{
		445	STRLEN plen;
		446	U8 path = (U8 )SvPVutf8 (pathsv, plen);
		447	U8 *pend = path + plen;
		448	U8 dst [plen * 6 * 3], *dstp = dst;
		449
		450	while (path < pend)
		451	{
		452	U8 ch = *path;
		453
		454	if (ch >= 'a' && ch <= 'z')
		455	dstp++ = path++;
		456	else if (ch >= '0' && ch <= '9')
		457	{
		458	STRLEN el, nl = 0;
		459	while (path >= '0' && path <= '9' && path < pend)
		460	path++, nl++;
		461
		462	for (el = nl; el < 6; el++)
		463	*dstp++ = '0';
		464
		465	memcpy (dstp, path - nl, nl);
		466	dstp += nl;
		467	}
		468	else
		469	{
		470	STRLEN cl;
		471	to_utf8_fold (path, dstp, &cl);
		472	dstp += cl;
		473	path += is_utf8_char (path);
		474	}
		475	}
		476
		477	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		478	}
		479	OUTPUT:
		480	RETVAL
		481
130	GdkPixbuf_noinc *	482	GdkPixbuf_noinc *
131	p7_to_pb (int w, int h, guchar *src)	483	p7_to_pb (int w, int h, SV *src_sv)
		484	PROTOTYPE: @
132	CODE:	485	CODE:
133	{	486	{
134	int x, y;	487	int x, y;
135	guchar dst, d;	488	guchar dst, d;
136	int dstr;	489	int dstr;
		490	guchar src = (guchar )SvPVbyte_nolen (src_sv);
137		491
138	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	492	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
139	dst = gdk_pixbuf_get_pixels (RETVAL);	493	dst = gdk_pixbuf_get_pixels (RETVAL);
140	dstr = gdk_pixbuf_get_rowstride (RETVAL);	494	dstr = gdk_pixbuf_get_rowstride (RETVAL);
141		495
…		…
150	}	504	}
151	}	505	}
152	OUTPUT:	506	OUTPUT:
153	RETVAL	507	RETVAL
154		508
		509	#############################################################################
		510
		511	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		512
		513	void
		514	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		515	CODE:
		516	{
		517	int w = gdk_pixbuf_get_width (pb);
		518	int h = gdk_pixbuf_get_height (pb);
		519	int x, y, i;
		520	guchar *dst;
		521	int bpp = gdk_pixbuf_get_n_channels (pb);
		522	guchar *src = gdk_pixbuf_get_pixels (pb);
		523	int sstr = gdk_pixbuf_get_rowstride (pb);
		524
		525	a85_init ();
		526
		527	for (y = 0; y < h; y++)
		528	for (x = 0; x < w; x++)
		529	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		530	a85_push (fp, src [x * bpp + y * sstr + i]);
		531
		532	a85_finish (fp);
		533	}
		534
		535	void
		536	dump_binary (PerlIO fp, GdkPixbuf pb)
		537	CODE:
		538	{
		539	int w = gdk_pixbuf_get_width (pb);
		540	int h = gdk_pixbuf_get_height (pb);
		541	int x, y, i;
		542	guchar *dst;
		543	int bpp = gdk_pixbuf_get_n_channels (pb);
		544	guchar *src = gdk_pixbuf_get_pixels (pb);
		545	int sstr = gdk_pixbuf_get_rowstride (pb);
		546
		547	for (y = 0; y < h; y++)
		548	for (x = 0; x < w; x++)
		549	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		550	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		551	}
		552
		553	#############################################################################
		554
		555	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		556
155	SV *	557	SV *
156	pb_to_p7 (GdkPixbuf *pb)	558	pb_to_hv84 (GdkPixbuf *pb)
157	CODE:	559	CODE:
158	{	560	{
159	int w = gdk_pixbuf_get_width (pb);	561	int w = gdk_pixbuf_get_width (pb);
160	int h = gdk_pixbuf_get_height (pb);	562	int h = gdk_pixbuf_get_height (pb);
161	int x, y;	563	int x, y;
162	guchar *dst;	564	guchar *dst;
163	int bpp = gdk_pixbuf_get_n_channels (pb);	565	int bpp = gdk_pixbuf_get_n_channels (pb);
164	guchar *src = gdk_pixbuf_get_pixels (pb);	566	guchar *src = gdk_pixbuf_get_pixels (pb);
165	int sstr = gdk_pixbuf_get_rowstride (pb);	567	int sstr = gdk_pixbuf_get_rowstride (pb);
166	int Er[IW], Eg[IW], Eb[IW];
167	int seed = 77;
168		568
169	RETVAL = newSV (w * h);	569	RETVAL = newSV (6 * 8 * 12 / 8);
170	SvPOK_only (RETVAL);	570	SvPOK_only (RETVAL);
171	SvCUR_set (RETVAL, w * h);	571	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
172		572
173	dst = SvPVX (RETVAL);	573	dst = (guchar *)SvPVX (RETVAL);
174
175	memset (Er, 0, sizeof (int) * IW);
176	memset (Eg, 0, sizeof (int) * IW);
177	memset (Eb, 0, sizeof (int) * IW);
178		574
179	/* some primitive error distribution + random dithering */	575	/* some primitive error distribution + random dithering */
180		576
181	for (y = 0; y < h; y++)	577	for (y = 0; y < h; y++)
182	{	578	{
183	int er = 0, eg = 0, eb = 0;	579	guchar p = src + y sstr;
184		580
185	for (x = 0; x < w; x++)	581	for (x = 0; x < w; x += 2)
186	{	582	{
187	int r, g, b;	583	unsigned int r, g, b, h, s, v, H, V1, V2;
188	guchar p = src + x bpp + y * sstr;
189		584
190	r = ((p[0] + er + Er[x]) * 7 + 128) / 255;	585	if (bpp == 3)
191	g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255;	586	r = p++, g = p++, b = *p++;
192	b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255;	587	else if (bpp == 1)
		588	r = g = b = *p++;
		589	else
		590	abort ();
193		591
194	r = r > 7 ? 7 : r < 0 ? 0 : r;	592	rgb_to_hsv (r, g, b, &h, &s, &v);
195	g = g > 7 ? 7 : g < 0 ? 0 : g;
196	b = b > 3 ? 3 : b < 0 ? 0 : b;
197		593
198	er += p[0] - (r * 255 + 4) / 7;	594	H = (h * 15 / 255) << 4;
199	eg += p[1] - (g * 255 + 4) / 7;	595	V1 = v;
200	eb += p[2] - (b * 255 + 2) / 3;
201		596
202	Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3;	597	if (bpp == 3)
203	Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3;	598	r = p++, g = p++, b = *p++;
204	Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3;	599	else if (bpp == 1)
		600	r = g = b = *p++;
		601	else
		602	abort ();
205		603
206	*dst++ = r << 5 \| g << 2 \| b;	604	rgb_to_hsv (r, g, b, &h, &s, &v);
		605
		606	H \|= h * 15 / 255;
		607	V2 = v;
		608
		609	*dst++ = H;
		610	*dst++ = V1;
		611	*dst++ = V2;
207	}	612	}
208	}	613	}
209	}	614	}
210	OUTPUT:	615	OUTPUT:
211	RETVAL	616	RETVAL
212		617
		618	SV *
		619	hv84_to_av (unsigned char *hv84)
		620	CODE:
		621	{
		622	int i = 72 / 3;
		623	AV *av = newAV ();
		624
		625	RETVAL = (SV )newRV_noinc ((SV )av);
		626	while (i--)
		627	{
		628	int h = *hv84++;
		629	int v1 = *hv84++;
		630	int v2 = *hv84++;
		631
		632	av_push (av, newSViv (v1));
		633	av_push (av, newSViv ((h >> 4) * 255 / 15));
		634	av_push (av, newSViv (v2));
		635	av_push (av, newSViv ((h & 15) * 255 / 15));
		636	}
		637	}
		638	OUTPUT:
		639	RETVAL
		640
213	#############################################################################	641	#############################################################################
214		642
215	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript	643	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
216		644
217	void	645	SV *
218	dump_ascii85 (PerlIO fp, GdkPixbuf pb)	646	extract_features (SV *ar)
219	CODE:	647	CODE:
220	{	648	{
221	int w = gdk_pixbuf_get_width (pb);	649	int i;
222	int h = gdk_pixbuf_get_height (pb);	650	AV av, result;
223	int x, y, i;
224	guchar *dst;
225	int bpp = gdk_pixbuf_get_n_channels (pb);
226	guchar *src = gdk_pixbuf_get_pixels (pb);
227	int sstr = gdk_pixbuf_get_rowstride (pb);
228		651
229	a85_init ();	652	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		653	croak ("Not an array ref as first argument to extract_features");
230		654
231	for (y = 0; y < h; y++)	655	av = (AV *) SvRV (ar);
232	for (x = 0; x < w; x++)	656	result = newAV ();
233	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
234	a85_push (fp, src [x * bpp + y * sstr + i]);
235		657
236	a85_finish (fp);	658	for (i = 0; i <= av_len (av); ++i)
237	}	659	{
		660	SV sv = av_fetch (av, i, 1);
		661	SV histsv = newSV (9 sizeof (float) + 1);
238		662
239	void	663	SvPOK_on (histsv);
240	dump_binary (PerlIO fp, GdkPixbuf pb)	664	SvCUR_set (histsv, 9 * sizeof (float));
241	CODE:	665	float hist = (float )SvPVX (histsv);
242	{
243	int w = gdk_pixbuf_get_width (pb);
244	int h = gdk_pixbuf_get_height (pb);
245	int x, y, i;
246	guchar *dst;
247	int bpp = gdk_pixbuf_get_n_channels (pb);
248	guchar *src = gdk_pixbuf_get_pixels (pb);
249	int sstr = gdk_pixbuf_get_rowstride (pb);
250		666
251	for (y = 0; y < h; y++)	667	struct feature f_h, f_s, f_v;
252	for (x = 0; x < w; x++)	668	feature_init (&f_h);
253	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)	669	feature_init (&f_s);
254	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);	670	feature_init (&f_v);
255	}
256		671
		672	{
		673	STRLEN len;
		674	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		675	while (len >= 3)
		676	{
		677	unsigned int r, g, b, h, s, v;
		678	r = buf++; g = buf++; b = *buf++;
		679	rgb_to_hsv (r, g, b, &h, &s, &v);
257		680
		681	feature_update_pass_1 (&f_h, h);
		682	feature_update_pass_1 (&f_s, s);
		683	feature_update_pass_1 (&f_v, v);
258		684
		685	len -= 3;
		686	}
259		687
		688	feature_finish_pass_1 (&f_h);
		689	feature_finish_pass_1 (&f_s);
		690	feature_finish_pass_1 (&f_v);
		691	}
		692
		693	{
		694	STRLEN len;
		695	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		696	while (len >= 3)
		697	{
		698	unsigned int r, g, b, h, s, v;
		699	r = buf++; g = buf++; b = *buf++;
		700	rgb_to_hsv (r, g, b, &h, &s, &v);
		701
		702	feature_update_pass_2 (&f_h, h);
		703	feature_update_pass_2 (&f_s, s);
		704	feature_update_pass_2 (&f_v, v);
		705
		706	len -= 3;
		707	}
		708
		709	feature_finish_pass_2 (&f_h);
		710	feature_finish_pass_2 (&f_s);
		711	feature_finish_pass_2 (&f_v);
		712	}
		713
		714	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		715	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		716	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
		717
		718	av_push (result, histsv);
		719	}
		720
		721	RETVAL = newRV_noinc ((SV *)result);
		722	}
		723	OUTPUT:
		724	RETVAL
		725

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Comparing CV/CV.xs (file contents): Revision 1.7 by root, Wed Nov 12 23:54:54 2003 UTC vs. Revision 1.39 by root, Fri Jun 23 09:09:14 2006 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.7 by root, Wed Nov 12 23:54:54 2003 UTC vs.
Revision 1.39 by root, Fri Jun 23 09:09:14 2006 UTC