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

Comparing CV/CV.xs (file contents):
Revision 1.4 by root, Sat Nov 8 18:22:21 2003 UTC vs.
Revision 1.35 by root, Tue Mar 7 16:45:53 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
		19	#define IW 80 /* MUST match Schnauzer.pm! */
		20	#define IH 60 /* MUST match Schnauzer.pm! */
		21
		22	#define RAND (seed = (seed + 7141) * 54773 % 134456)
		23
		24	#define LINELENGTH 240
		25
		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
10	static guint32 a85_val;	73	static guint32 a85_val;
11	static guint a85_cnt;	74	static guint a85_cnt;
12	static guchar a85_buf[80], *a85_ptr;	75	static guchar a85_buf[LINELENGTH], *a85_ptr;
13		76
14	static void	77	static void
15	a85_init (void)	78	a85_init (void)
16	{	79	{
17	a85_cnt = 4;	80	a85_cnt = 4;
47	}	110	}
48	}	111	}
49		112
50	}	113	}
51		114
		115	static void
52	a85_finish (PerlIO *fp)	116	a85_finish (PerlIO *fp)
53	{	117	{
54	while (a85_cnt != 4)	118	while (a85_cnt != 4)
55	a85_push (fp, 0);	119	a85_push (fp, 0);
56		120
…		…
59	*a85_ptr++ = '\n';	123	*a85_ptr++ = '\n';
60		124
61	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	125	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
62	}	126	}
63		127
		128	/////////////////////////////////////////////////////////////////////////////
		129
64	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow	130	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
65		131
66	PROTOTYPES: ENABLE	132	PROTOTYPES: ENABLE
67		133
		134	# missing function in perl. really :)
		135	int
		136	common_prefix_length (a, b)
		137	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		138	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		139	CODE:
		140	RETVAL = 0;
		141
		142	while (a == b && *a)
		143	{
		144	RETVAL += (*a & 0xc0) != 0x80;
		145	a++, b++;
		146	}
		147
		148	OUTPUT:
		149	RETVAL
		150
		151	const char *
		152	magic (const char *path)
		153	CODE:
		154	{
		155	static magic_t cookie;
		156
		157	if (!cookie)
		158	{
		159	cookie = magic_open (MAGIC_NONE);
		160
		161	if (cookie)
		162	magic_load (cookie, 0);
		163	else
		164	XSRETURN_UNDEF;
		165	}
		166
		167	RETVAL = magic_file (cookie, path);
		168	}
		169	OUTPUT:
		170	RETVAL
		171
		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
		194
		195	gboolean
		196	gdk_net_wm_supports (GdkAtom property)
		197	CODE:
		198	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		199	RETVAL = gdk_net_wm_supports (property);
		200	#else
		201	RETVAL = 0;
		202	#endif
		203	OUTPUT:
		204	RETVAL
		205
68	GdkPixbuf_noinc *	206	GdkPixbuf_noinc *
69	transpose (GdkPixbuf *pb)	207	dealpha_expose (GdkPixbuf *pb)
70	CODE:	208	CODE:
71	{	209	{
72	int w = gdk_pixbuf_get_width (pb);	210	int w = gdk_pixbuf_get_width (pb);
73	int h = gdk_pixbuf_get_height (pb);	211	int h = gdk_pixbuf_get_height (pb);
74	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	212	int bpp = gdk_pixbuf_get_n_channels (pb);
75	int x, y, i;	213	int x, y, i;
76	guchar src = gdk_pixbuf_get_pixels (pb), dst;	214	guchar src = gdk_pixbuf_get_pixels (pb), dst;
77	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	215	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
78		216
79	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	217	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
80		218
81	dst = gdk_pixbuf_get_pixels (RETVAL);	219	dst = gdk_pixbuf_get_pixels (RETVAL);
82	dstr = gdk_pixbuf_get_rowstride (RETVAL);	220	dstr = gdk_pixbuf_get_rowstride (RETVAL);
83		221
84	for (y = 0; y < h; y++)
85	for (x = 0; x < w; x++)	222	for (x = 0; x < w; x++)
		223	for (y = 0; y < h; y++)
86	for (i = 0; i < bpp; i++)	224	for (i = 0; i < 3; i++)
87	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	225	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
88	}	226	}
89	OUTPUT:	227	OUTPUT:
90	RETVAL	228	RETVAL
91		229
92	GdkPixbuf_noinc *	230	GdkPixbuf_noinc *
93	flop (GdkPixbuf *pb)	231	rotate (GdkPixbuf *pb, int angle)
94	CODE:	232	CODE:
95	{	233	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
96	int w = gdk_pixbuf_get_width (pb);	234	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
97	int h = gdk_pixbuf_get_height (pb);	235	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
98	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	236	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
99	int x, y, i;	237	: angle);
100	guchar src = gdk_pixbuf_get_pixels (pb), dst;	238	OUTPUT:
101	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	239	RETVAL
102		240
103	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	241	GdkPixbuf_noinc *
		242	load_jpeg (SV *path, int thumbnail=0)
		243	CODE:
		244	{
		245	struct jpeg_decompress_struct cinfo;
		246	struct jpg_err_mgr jerr;
		247	guchar *data;
		248	int rs;
		249	FILE *fp;
		250	volatile GdkPixbuf *pb = 0;
104		251
		252	RETVAL = 0;
		253
		254	fp = fopen (SvPVbyte_nolen (path), "rb");
		255
		256	if (!fp)
		257	XSRETURN_UNDEF;
		258
		259	cinfo.err = jpeg_std_error (&jerr.err);
		260
		261	jerr.err.error_exit = cv_error_exit;
		262	jerr.err.output_message = cv_error_output;
		263
		264	if ((rs = setjmp (jerr.setjmp_buffer)))
		265	{
		266	fclose (fp);
		267	jpeg_destroy_decompress (&cinfo);
		268
		269	if (pb)
		270	g_object_unref ((gpointer)pb);
		271
		272	XSRETURN_UNDEF;
		273	}
		274
		275	jpeg_create_decompress (&cinfo);
		276
		277	jpeg_stdio_src (&cinfo, fp);
		278	jpeg_read_header (&cinfo, TRUE);
		279
		280	cinfo.dct_method = JDCT_DEFAULT;
		281	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		282	cinfo.do_block_smoothing = FALSE;
		283	cinfo.out_color_space = JCS_RGB;
		284	cinfo.quantize_colors = FALSE;
		285
		286	cinfo.scale_num = 1;
		287	cinfo.scale_denom = 1;
		288
		289	jpeg_calc_output_dimensions (&cinfo);
		290
		291	if (thumbnail)
		292	{
		293	cinfo.dct_method = JDCT_FASTEST;
		294	cinfo.do_fancy_upsampling = FALSE;
		295
		296	while (cinfo.scale_denom < 8
		297	&& cinfo.output_width >= IW*4
		298	&& cinfo.output_height >= IH*4)
		299	{
		300	cinfo.scale_denom <<= 1;
		301	jpeg_calc_output_dimensions (&cinfo);
		302	}
		303	}
		304
		305	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
		306	if (!RETVAL)
		307	longjmp (jerr.setjmp_buffer, 2);
		308
105	dst = gdk_pixbuf_get_pixels (RETVAL);	309	data = gdk_pixbuf_get_pixels (RETVAL);
106	dstr = gdk_pixbuf_get_rowstride (RETVAL);	310	rs = gdk_pixbuf_get_rowstride (RETVAL);
107		311
		312	if (cinfo.output_components != 3)
		313	longjmp (jerr.setjmp_buffer, 3);
		314
		315	jpeg_start_decompress (&cinfo);
		316
		317	while (cinfo.output_scanline < cinfo.output_height)
		318	{
		319	int remaining = cinfo.output_height - cinfo.output_scanline;
		320	JSAMPROW rp[4];
		321
		322	rp [0] = data + cinfo.output_scanline * rs;
		323	rp [1] = (guchar *)rp [0] + rs;
		324	rp [2] = (guchar *)rp [1] + rs;
		325	rp [3] = (guchar *)rp [2] + rs;
		326
		327	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		328	}
		329
		330	jpeg_finish_decompress (&cinfo);
		331	fclose (fp);
		332	jpeg_destroy_decompress (&cinfo);
		333	}
		334	OUTPUT:
		335	RETVAL
		336
		337	void
		338	compare (GdkPixbuf a, GdkPixbuf b)
		339	PPCODE:
		340	{
		341	int w = gdk_pixbuf_get_width (a);
		342	int h = gdk_pixbuf_get_height (a);
		343	int sa = gdk_pixbuf_get_rowstride (a);
		344	int sb = gdk_pixbuf_get_rowstride (b);
		345
		346	guchar *pa = gdk_pixbuf_get_pixels (a);
		347	guchar *pb = gdk_pixbuf_get_pixels (b);
		348
		349	int x, y;
		350
		351	assert (w == gdk_pixbuf_get_width (b));
		352	assert (h == gdk_pixbuf_get_height (b));
		353
		354	assert (gdk_pixbuf_get_n_channels (a) == 3);
		355	assert (gdk_pixbuf_get_n_channels (b) == 3);
		356
		357	double diff = 0.;
		358	int peak = 0;
		359
		360	if (w && h)
108	for (y = 0; y < h; y++)	361	for (y = 0; y < h; y++)
		362	{
		363	guchar pa_ = pa + y sa;
		364	guchar pb_ = pb + y sb;
		365
109	for (x = 0; x < w; x++)	366	for (x = 0; x < w; x++)
110	for (i = 0; i < bpp; i++)	367	{
111	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];	368	int d;
		369
		370	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		371	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));
		373	}
		374	}
		375
		376	EXTEND (SP, 2);
		377	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		378	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
112	}	379	}
113	OUTPUT:	380
114	RETVAL	381	#############################################################################
115		382
116	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	383	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
117		384
		385	SV *
		386	foldcase (SV *pathsv)
		387	PROTOTYPE: $
		388	CODE:
		389	{
		390	STRLEN plen;
		391	U8 path = (U8 )SvPVutf8 (pathsv, plen);
		392	U8 *pend = path + plen;
		393	U8 dst [plen * 6 * 3], *dstp = dst;
		394
		395	while (path < pend)
		396	{
		397	U8 ch = *path;
		398
		399	if (ch >= 'a' && ch <= 'z')
		400	dstp++ = path++;
		401	else if (ch >= '0' && ch <= '9')
		402	{
		403	STRLEN el, nl = 0;
		404	while (path >= '0' && path <= '9' && path < pend)
		405	path++, nl++;
		406
		407	for (el = nl; el < 6; el++)
		408	*dstp++ = '0';
		409
		410	memcpy (dstp, path - nl, nl);
		411	dstp += nl;
		412	}
		413	else
		414	{
		415	STRLEN cl;
		416	to_utf8_fold (path, dstp, &cl);
		417	dstp += cl;
		418	path += is_utf8_char (path);
		419	}
		420	}
		421
		422	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		423	}
		424	OUTPUT:
		425	RETVAL
		426
118	GdkPixbuf_noinc *	427	GdkPixbuf_noinc *
119	p7_to_pb (int w, int h, guchar *src)	428	p7_to_pb (int w, int h, SV *src_sv)
		429	PROTOTYPE: @
120	CODE:	430	CODE:
121	{	431	{
122	int x, y;	432	int x, y;
123	guchar dst, d;	433	guchar dst, d;
124	int dstr;	434	int dstr;
		435	guchar src = (guchar )SvPVbyte_nolen (src_sv);
125		436
126	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	437	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
127	dst = gdk_pixbuf_get_pixels (RETVAL);	438	dst = gdk_pixbuf_get_pixels (RETVAL);
128	dstr = gdk_pixbuf_get_rowstride (RETVAL);	439	dstr = gdk_pixbuf_get_rowstride (RETVAL);
129		440
…		…
138	}	449	}
139	}	450	}
140	OUTPUT:	451	OUTPUT:
141	RETVAL	452	RETVAL
142		453
		454	#############################################################################
		455
		456	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		457
		458	void
		459	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		460	CODE:
		461	{
		462	int w = gdk_pixbuf_get_width (pb);
		463	int h = gdk_pixbuf_get_height (pb);
		464	int x, y, i;
		465	guchar *dst;
		466	int bpp = gdk_pixbuf_get_n_channels (pb);
		467	guchar *src = gdk_pixbuf_get_pixels (pb);
		468	int sstr = gdk_pixbuf_get_rowstride (pb);
		469
		470	a85_init ();
		471
		472	for (y = 0; y < h; y++)
		473	for (x = 0; x < w; x++)
		474	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		475	a85_push (fp, src [x * bpp + y * sstr + i]);
		476
		477	a85_finish (fp);
		478	}
		479
		480	void
		481	dump_binary (PerlIO fp, GdkPixbuf pb)
		482	CODE:
		483	{
		484	int w = gdk_pixbuf_get_width (pb);
		485	int h = gdk_pixbuf_get_height (pb);
		486	int x, y, i;
		487	guchar *dst;
		488	int bpp = gdk_pixbuf_get_n_channels (pb);
		489	guchar *src = gdk_pixbuf_get_pixels (pb);
		490	int sstr = gdk_pixbuf_get_rowstride (pb);
		491
		492	for (y = 0; y < h; y++)
		493	for (x = 0; x < w; x++)
		494	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		495	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		496	}
		497
		498	#############################################################################
		499
		500	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		501
143	SV *	502	SV *
144	pb_to_p7 (GdkPixbuf *pb)	503	pb_to_hv84 (GdkPixbuf *pb)
145	CODE:	504	CODE:
146	{	505	{
147	int w = gdk_pixbuf_get_width (pb);	506	int w = gdk_pixbuf_get_width (pb);
148	int h = gdk_pixbuf_get_height (pb);	507	int h = gdk_pixbuf_get_height (pb);
149	int x, y;	508	int x, y;
150	guchar *dst;	509	guchar *dst;
151	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	510	int bpp = gdk_pixbuf_get_n_channels (pb);
152	guchar *src = gdk_pixbuf_get_pixels (pb);	511	guchar *src = gdk_pixbuf_get_pixels (pb);
153	int sstr = gdk_pixbuf_get_rowstride (pb);	512	int sstr = gdk_pixbuf_get_rowstride (pb);
154		513
155	RETVAL = newSV (w * h);	514	RETVAL = newSV (6 * 8 * 12 / 8);
156	SvPOK_only (RETVAL);	515	SvPOK_only (RETVAL);
157	SvCUR_set (RETVAL, w * h);	516	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
158		517
159	dst = SvPVX (RETVAL);	518	dst = (guchar *)SvPVX (RETVAL);
		519
		520	/* some primitive error distribution + random dithering */
160		521
161	for (y = 0; y < h; y++)	522	for (y = 0; y < h; y++)
162	{	523	{
163	/* use a very primitive form of error distribution. */	524	guchar p = src + y sstr;
164	int er = 0, eg = 0, eb = 0;
165		525
166	for (x = 0; x < w; x++)	526	for (x = 0; x < w; x += 2)
167	{	527	{
168	int r, g, b;	528	unsigned int r, g, b, h, s, v, H, V1, V2;
169	guchar p = src + x bpp + y * sstr;
170		529
171	r = ((p[0] + er) * 7 + 128) / 255;	530	if (bpp == 3)
172	g = ((p[1] + eg) * 7 + 128) / 255;	531	r = p++, g = p++, b = *p++;
173	b = ((p[2] + eb) * 3 + 128) / 255;	532	else if (bpp == 1)
		533	r = g = b = *p++;
		534	else
		535	abort ();
174		536
175	r = r > 7 ? 7 : r < 0 ? 0 : r;	537	rgb_to_hsv (r, g, b, &h, &s, &v);
176	g = g > 7 ? 7 : g < 0 ? 0 : g;
177	b = b > 3 ? 3 : b < 0 ? 0 : b;
178		538
179	er += p[0] - (r * 255 + 4) / 7;	539	H = (h * 15 / 255) << 4;
180	eg += p[1] - (g * 255 + 4) / 7;	540	V1 = v;
181	eb += p[2] - (b * 255 + 2) / 3;
182		541
183	*dst++ = r << 5 \| g << 2 \| b;	542	if (bpp == 3)
		543	r = p++, g = p++, b = *p++;
		544	else if (bpp == 1)
		545	r = g = b = *p++;
		546	else
		547	abort ();
		548
		549	rgb_to_hsv (r, g, b, &h, &s, &v);
		550
		551	H \|= h * 15 / 255;
		552	V2 = v;
		553
		554	*dst++ = H;
		555	*dst++ = V1;
		556	*dst++ = V2;
184	}	557	}
185	}	558	}
186	}	559	}
187	OUTPUT:	560	OUTPUT:
188	RETVAL	561	RETVAL
189		562
		563	SV *
		564	hv84_to_av (unsigned char *hv84)
		565	CODE:
		566	{
		567	int i = 72 / 3;
		568	AV *av = newAV ();
		569
		570	RETVAL = (SV )newRV_noinc ((SV )av);
		571	while (i--)
		572	{
		573	int h = *hv84++;
		574	int v1 = *hv84++;
		575	int v2 = *hv84++;
		576
		577	av_push (av, newSViv (v1));
		578	av_push (av, newSViv ((h >> 4) * 255 / 15));
		579	av_push (av, newSViv (v2));
		580	av_push (av, newSViv ((h & 15) * 255 / 15));
		581	}
		582	}
		583	OUTPUT:
		584	RETVAL
		585
		586	#############################################################################
		587
190	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript	588	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
191		589
192	void	590	SV *
193	dump_pb (PerlIO fp, GdkPixbuf pb)	591	make_histograms (SV *ar)
194	CODE:	592	CODE:
195	{	593	{
196	int w = gdk_pixbuf_get_width (pb);	594	int i;
197	int h = gdk_pixbuf_get_height (pb);	595	AV av, result;
198	int x, y, i;
199	guchar *dst;
200	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;
201	guchar *src = gdk_pixbuf_get_pixels (pb);
202	int sstr = gdk_pixbuf_get_rowstride (pb);
203		596
204	a85_init ();	597	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		598	croak ("Not an array ref as first argument to make_histogram");
205		599
206	for (y = 0; y < h; y++)	600	av = (AV *) SvRV (ar);
207	for (x = 0; x < w; x++)	601	result = newAV ();
		602
		603	for (i = 0; i <= av_len (av); ++i)
		604	{
		605	const int HISTSIZE = 64;
		606
		607	int j;
		608	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);
		616	SvPOK_on (histsv);
		617	SvCUR_set (histsv, HISTSIZE * sizeof (float));
		618	hist = (float *)SvPVX (histsv);
		619
		620	Zero (tmphist, sizeof (tmphist), char);
		621
		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
208	for (i = 0; i < 3; i++)	633	for (j = 0; j < HISTSIZE; ++j)
209	a85_push (fp, src [x * bpp + y * sstr + i]);	634	hist[j] = (float)tmphist[j] / (len + 1e-30);
210		635
211	a85_finish (fp);	636	av_push (result, histsv);
212	}	637	}
213		638
		639	RETVAL = newRV_noinc ((SV *)result);
		640	}
		641	OUTPUT:
		642	RETVAL
214		643
215		644
216

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Comparing CV/CV.xs (file contents): Revision 1.4 by root, Sat Nov 8 18:22:21 2003 UTC vs. Revision 1.35 by root, Tue Mar 7 16:45:53 2006 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.4 by root, Sat Nov 8 18:22:21 2003 UTC vs.
Revision 1.35 by root, Tue Mar 7 16:45:53 2006 UTC