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

Comparing CV/CV.xs (file contents):
Revision 1.13 by root, Tue Feb 8 11:03:30 2005 UTC vs.
Revision 1.28 by root, Mon Aug 22 00:30:58 2005 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
		8	#include <jpeglib.h>
		9	#include <glib.h>
		10	#include <gtk/gtk.h>
5	#include <gdk-pixbuf/gdk-pixbuf.h>	11	#include <gdk-pixbuf/gdk-pixbuf.h>
6		12
7	#include <gperl.h>	13	#include <gperl.h>
8	#include <gtk2perl.h>	14	#include <gtk2perl.h>
9		15
10	#define IW 80	16	#define IW 80 /* MUST match Schnauer.pm! */
		17	#define IH 60 /* MUST match Schnauer.pm! */
11		18
12	#define RAND (seed = (seed + 7141) * 54773 % 134456)	19	#define RAND (seed = (seed + 7141) * 54773 % 134456)
13		20
14	#define LINELENGTH 240	21	#define LINELENGTH 240
15		22
16	#define ELLIPSIS "\xe2\x80\xa6"	23	#define ELLIPSIS "\xe2\x80\xa6"
		24
		25	struct jpg_err_mgr
		26	{
		27	struct jpeg_error_mgr err;
		28	jmp_buf setjmp_buffer;
		29	};
		30
		31	static void
		32	cv_error_exit (j_common_ptr cinfo)
		33	{
		34	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
		35	}
		36
		37	static void
		38	cv_error_output (j_common_ptr cinfo)
		39	{
		40	return;
		41	}
		42
		43	static void
		44	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
		45	unsigned int h, unsigned int s, unsigned int *v)
		46	{
		47	unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
		48	unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
		49	unsigned int delta = mx - mn;
		50
		51	*v = mx;
		52
		53	s = mx ? delta 255 / mx : 0;
		54
		55	if (delta == 0)
		56	*h = 0;
		57	else
		58	{
		59	if (r == mx)
		60	h = ((int)g - (int)b) 255 / (int)(delta * 3);
		61	else if (g == mx)
		62	h = ((int)b - (int)r) 255 / (int)(delta * 3) + 52;
		63	else if (b == mx)
		64	h = ((int)r - (int)g) 255 / (int)(delta * 3) + 103;
		65
		66	*h &= 255;
		67	}
		68	}
17		69
18	static guint32 a85_val;	70	static guint32 a85_val;
19	static guint a85_cnt;	71	static guint a85_cnt;
20	static guchar a85_buf[LINELENGTH], *a85_ptr;	72	static guchar a85_buf[LINELENGTH], *a85_ptr;
21		73
68	*a85_ptr++ = '\n';	120	*a85_ptr++ = '\n';
69		121
70	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	122	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
71	}	123	}
72		124
73	static void
74	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
75	unsigned int h, unsigned int s, unsigned int *v)
76	{
77	unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
78	unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
79	unsigned int delta = mx - mn;
80
81	*v = mx;
82
83	s = mx ? delta 255 / mx : 0;
84
85	if (delta == 0)
86	*h = 0;
87	else
88	{
89	if (r == mx)
90	h = ((int)g - (int)b) 255 / (int)(delta * 3);
91	else if (g == mx)
92	h = ((int)b - (int)r) 255 / (int)(delta * 3) + 52;
93	else if (b == mx)
94	h = ((int)r - (int)g) 255 / (int)(delta * 3) + 103;
95
96	*h &= 255;
97	}
98	}
99
100	/////////////////////////////////////////////////////////////////////////////	125	/////////////////////////////////////////////////////////////////////////////
101		126
102	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	127	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
103		128
104	PROTOTYPES: ENABLE	129	PROTOTYPES: ENABLE
105		130
		131	# missing in Gtk2 perl module
		132
		133	gboolean
		134	gdk_net_wm_supports (GdkAtom property)
		135	CODE:
		136	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		137	RETVAL = gdk_net_wm_supports (property);
		138	#else
		139	RETVAL = 0;
		140	#endif
		141	OUTPUT:
		142	RETVAL
		143
106	GdkPixbuf_noinc *	144	GdkPixbuf_noinc *
107	transpose (GdkPixbuf *pb)	145	dealpha_expose (GdkPixbuf *pb)
108	CODE:	146	CODE:
109	{	147	{
110	int w = gdk_pixbuf_get_width (pb);	148	int w = gdk_pixbuf_get_width (pb);
111	int h = gdk_pixbuf_get_height (pb);	149	int h = gdk_pixbuf_get_height (pb);
112	int bpp = gdk_pixbuf_get_n_channels (pb);	150	int bpp = gdk_pixbuf_get_n_channels (pb);
113	int x, y, i;	151	int x, y, i;
114	guchar src = gdk_pixbuf_get_pixels (pb), dst;	152	guchar src = gdk_pixbuf_get_pixels (pb), dst;
115	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	153	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
116		154
117	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	155	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
118		156
119	dst = gdk_pixbuf_get_pixels (RETVAL);	157	dst = gdk_pixbuf_get_pixels (RETVAL);
120	dstr = gdk_pixbuf_get_rowstride (RETVAL);	158	dstr = gdk_pixbuf_get_rowstride (RETVAL);
121		159
122	for (y = 0; y < h; y++)
123	for (x = 0; x < w; x++)	160	for (x = 0; x < w; x++)
		161	for (y = 0; y < h; y++)
124	for (i = 0; i < bpp; i++)	162	for (i = 0; i < 3; i++)
125	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	163	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
126	}	164	}
127	OUTPUT:	165	OUTPUT:
128	RETVAL	166	RETVAL
129		167
130	GdkPixbuf_noinc *	168	GdkPixbuf_noinc *
131	flop (GdkPixbuf *pb)	169	rotate (GdkPixbuf *pb, int angle)
132	CODE:	170	CODE:
133	{	171	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
134	int w = gdk_pixbuf_get_width (pb);	172	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
135	int h = gdk_pixbuf_get_height (pb);	173	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
136	int bpp = gdk_pixbuf_get_n_channels (pb);	174	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
137	int x, y, i;	175	: angle);
138	guchar src = gdk_pixbuf_get_pixels (pb), dst;	176	OUTPUT:
139	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	177	RETVAL
140		178
141	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	179	GdkPixbuf_noinc *
		180	load_jpeg (SV *path, int thumbnail=0)
		181	CODE:
		182	{
		183	struct jpeg_decompress_struct cinfo;
		184	struct jpg_err_mgr jerr;
		185	guchar *data;
		186	int rs;
		187	FILE *fp;
		188	volatile GdkPixbuf *pb = 0;
		189	gchar *filename;
142		190
		191	RETVAL = 0;
		192
		193	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
		194	fp = fopen (filename, "rb");
		195	g_free (filename);
		196
		197	if (!fp)
		198	XSRETURN_UNDEF;
		199
		200	cinfo.err = jpeg_std_error (&jerr.err);
		201
		202	jerr.err.error_exit = cv_error_exit;
		203	jerr.err.output_message = cv_error_output;
		204
		205	if ((rs = setjmp (jerr.setjmp_buffer)))
		206	{
		207	fclose (fp);
		208	jpeg_destroy_decompress (&cinfo);
		209
		210	if (pb)
		211	g_object_unref ((gpointer)pb);
		212
		213	XSRETURN_UNDEF;
		214	}
		215
		216	jpeg_create_decompress (&cinfo);
		217
		218	jpeg_stdio_src (&cinfo, fp);
		219	jpeg_read_header (&cinfo, TRUE);
		220
		221	cinfo.dct_method = JDCT_DEFAULT;
		222	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		223	cinfo.do_block_smoothing = FALSE;
		224	cinfo.out_color_space = JCS_RGB;
		225	cinfo.quantize_colors = FALSE;
		226
		227	cinfo.scale_num = 1;
		228	cinfo.scale_denom = 1;
		229
		230	jpeg_calc_output_dimensions (&cinfo);
		231
		232	if (thumbnail)
		233	{
		234	cinfo.dct_method = JDCT_FASTEST;
		235	cinfo.do_fancy_upsampling = FALSE;
		236
		237	while (cinfo.scale_denom < 8
		238	&& cinfo.output_width >= IW*4
		239	&& cinfo.output_height >= IH*4)
		240	{
		241	cinfo.scale_denom <<= 1;
		242	jpeg_calc_output_dimensions (&cinfo);
		243	}
		244	}
		245
		246	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
		247	if (!RETVAL)
		248	longjmp (jerr.setjmp_buffer, 2);
		249
143	dst = gdk_pixbuf_get_pixels (RETVAL);	250	data = gdk_pixbuf_get_pixels (RETVAL);
144	dstr = gdk_pixbuf_get_rowstride (RETVAL);	251	rs = gdk_pixbuf_get_rowstride (RETVAL);
145		252
146	for (y = 0; y < h; y++)	253	if (cinfo.output_components != 3)
147	for (x = 0; x < w; x++)	254	longjmp (jerr.setjmp_buffer, 3);
148	for (i = 0; i < bpp; i++)	255
149	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];	256	jpeg_start_decompress (&cinfo);
		257
		258	while (cinfo.output_scanline < cinfo.output_height)
		259	{
		260	int remaining = cinfo.output_height - cinfo.output_scanline;
		261	JSAMPROW rp[4];
		262
		263	rp [0] = data + cinfo.output_scanline * rs;
		264	rp [1] = (guchar *)rp [0] + rs;
		265	rp [2] = (guchar *)rp [1] + rs;
		266	rp [3] = (guchar *)rp [2] + rs;
		267
		268	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		269	}
		270
		271	jpeg_finish_decompress (&cinfo);
		272	fclose (fp);
		273	jpeg_destroy_decompress (&cinfo);
150	}	274	}
151	OUTPUT:	275	OUTPUT:
152	RETVAL	276	RETVAL
153		277
154	#############################################################################	278	#############################################################################
155		279
156	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	280	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
157		281
		282	SV *
		283	foldcase (SV *pathsv)
		284	PROTOTYPE: $
		285	CODE:
		286	{
		287	STRLEN plen;
		288	U8 path = (U8 )SvPVutf8 (pathsv, plen);
		289	U8 *pend = path + plen;
		290	U8 dst [plen * 6 * 3], *dstp = dst;
		291
		292	while (path < pend)
		293	{
		294	U8 ch = *path;
		295
		296	if (ch >= 'a' && ch <= 'z')
		297	dstp++ = path++;
		298	else if (ch >= '0' && ch <= '9')
		299	{
		300	STRLEN el, nl = 0;
		301	while (path >= '0' && path <= '9' && path < pend)
		302	path++, nl++;
		303
		304	for (el = nl; el < 6; el++)
		305	*dstp++ = '0';
		306
		307	memcpy (dstp, path - nl, nl);
		308	dstp += nl;
		309	}
		310	else
		311	{
		312	STRLEN cl;
		313	to_utf8_fold (path, dstp, &cl);
		314	dstp += cl;
		315	path += is_utf8_char (path);
		316	}
		317	}
		318
		319	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		320	}
		321	OUTPUT:
		322	RETVAL
		323
158	GdkPixbuf_noinc *	324	GdkPixbuf_noinc *
159	p7_to_pb (int w, int h, guchar *src)	325	p7_to_pb (int w, int h, SV *src_sv)
		326	PROTOTYPE: @
160	CODE:	327	CODE:
161	{	328	{
162	int x, y;	329	int x, y;
163	guchar dst, d;	330	guchar dst, d;
164	int dstr;	331	int dstr;
		332	guchar src = (guchar )SvPVbyte_nolen (src_sv);
165		333
166	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	334	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
167	dst = gdk_pixbuf_get_pixels (RETVAL);	335	dst = gdk_pixbuf_get_pixels (RETVAL);
168	dstr = gdk_pixbuf_get_rowstride (RETVAL);	336	dstr = gdk_pixbuf_get_rowstride (RETVAL);
169		337
…		…
178	}	346	}
179	}	347	}
180	OUTPUT:	348	OUTPUT:
181	RETVAL	349	RETVAL
182		350
		351	#############################################################################
		352
		353	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		354
		355	void
		356	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		357	CODE:
		358	{
		359	int w = gdk_pixbuf_get_width (pb);
		360	int h = gdk_pixbuf_get_height (pb);
		361	int x, y, i;
		362	guchar *dst;
		363	int bpp = gdk_pixbuf_get_n_channels (pb);
		364	guchar *src = gdk_pixbuf_get_pixels (pb);
		365	int sstr = gdk_pixbuf_get_rowstride (pb);
		366
		367	a85_init ();
		368
		369	for (y = 0; y < h; y++)
		370	for (x = 0; x < w; x++)
		371	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		372	a85_push (fp, src [x * bpp + y * sstr + i]);
		373
		374	a85_finish (fp);
		375	}
		376
		377	void
		378	dump_binary (PerlIO fp, GdkPixbuf pb)
		379	CODE:
		380	{
		381	int w = gdk_pixbuf_get_width (pb);
		382	int h = gdk_pixbuf_get_height (pb);
		383	int x, y, i;
		384	guchar *dst;
		385	int bpp = gdk_pixbuf_get_n_channels (pb);
		386	guchar *src = gdk_pixbuf_get_pixels (pb);
		387	int sstr = gdk_pixbuf_get_rowstride (pb);
		388
		389	for (y = 0; y < h; y++)
		390	for (x = 0; x < w; x++)
		391	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		392	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		393	}
		394
		395	#############################################################################
		396
		397	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		398
183	SV *	399	SV *
184	pb_to_p7 (GdkPixbuf *pb)	400	pb_to_hv84 (GdkPixbuf *pb)
185	CODE:	401	CODE:
186	{	402	{
187	int w = gdk_pixbuf_get_width (pb);	403	int w = gdk_pixbuf_get_width (pb);
188	int h = gdk_pixbuf_get_height (pb);	404	int h = gdk_pixbuf_get_height (pb);
189	int x, y;	405	int x, y;
190	guchar *dst;	406	guchar *dst;
191	int bpp = gdk_pixbuf_get_n_channels (pb);	407	int bpp = gdk_pixbuf_get_n_channels (pb);
192	guchar *src = gdk_pixbuf_get_pixels (pb);	408	guchar *src = gdk_pixbuf_get_pixels (pb);
193	int sstr = gdk_pixbuf_get_rowstride (pb);	409	int sstr = gdk_pixbuf_get_rowstride (pb);
194	int Er[IW], Eg[IW], Eb[IW];
195	int seed = 77;
196
197	RETVAL = newSV (w * h);
198	SvPOK_only (RETVAL);
199	SvCUR_set (RETVAL, w * h);
200
201	dst = SvPVX (RETVAL);
202
203	memset (Er, 0, sizeof (int) * IW);
204	memset (Eg, 0, sizeof (int) * IW);
205	memset (Eb, 0, sizeof (int) * IW);
206
207	/* some primitive error distribution + random dithering */
208
209	for (y = 0; y < h; y++)
210	{
211	int er = 0, eg = 0, eb = 0;
212
213	for (x = 0; x < w; x++)
214	{
215	int r, g, b;
216	guchar p = src + x bpp + y * sstr;
217
218	r = ((p[0] + er + Er[x]) * 7 + 128) / 255;
219	g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255;
220	b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255;
221
222	r = r > 7 ? 7 : r < 0 ? 0 : r;
223	g = g > 7 ? 7 : g < 0 ? 0 : g;
224	b = b > 3 ? 3 : b < 0 ? 0 : b;
225
226	er += p[0] - (r * 255 + 4) / 7;
227	eg += p[1] - (g * 255 + 4) / 7;
228	eb += p[2] - (b * 255 + 2) / 3;
229
230	Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3;
231	Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3;
232	Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3;
233
234	*dst++ = r << 5 \| g << 2 \| b;
235	}
236	}
237	}
238	OUTPUT:
239	RETVAL
240
241	SV *
242	make_histogram (SV *ar)
243	CODE:
244	{
245	int i;
246	AV av, result;
247
248	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
249	croak ("Not an array ref as first argument to make_histogram");
250
251	av = (AV *) SvRV (ar);
252	result = newAV ();
253
254	for (i = 0; i <= av_len (av); ++i)
255	{
256	int bigst, j;
257	SV sv = av_fetch (av, i, 1);
258	STRLEN len;
259	char *buf = SvPVbyte (sv, len);
260
261	int tmphist[256];
262	char *hist;
263
264	SV *histsv = newSV (257);
265	SvPOK_on (histsv);
266	SvCUR_set (histsv, 256);
267	hist = SvPVX (histsv);
268
269	Zero (tmphist, 256, int);
270
271	while (len--)
272	++tmphist[(unsigned char)*buf++];
273
274	bigst = 1;
275	for (j = 0; j < 256; ++j)
276	if (tmphist[j] > bigst)
277	bigst = tmphist[j];
278
279	for (j = 0; j < 256; ++j)
280	hist[j] = tmphist[j] * 255 / bigst;
281
282	av_push (result, histsv);
283	}
284
285	RETVAL = newRV_noinc ((SV *)result);
286	}
287	OUTPUT:
288	RETVAL
289
290
291
292	#############################################################################
293
294	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
295
296	void
297	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
298	CODE:
299	{
300	int w = gdk_pixbuf_get_width (pb);
301	int h = gdk_pixbuf_get_height (pb);
302	int x, y, i;
303	guchar *dst;
304	int bpp = gdk_pixbuf_get_n_channels (pb);
305	guchar *src = gdk_pixbuf_get_pixels (pb);
306	int sstr = gdk_pixbuf_get_rowstride (pb);
307
308	a85_init ();
309
310	for (y = 0; y < h; y++)
311	for (x = 0; x < w; x++)
312	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
313	a85_push (fp, src [x * bpp + y * sstr + i]);
314
315	a85_finish (fp);
316	}
317
318	void
319	dump_binary (PerlIO fp, GdkPixbuf pb)
320	CODE:
321	{
322	int w = gdk_pixbuf_get_width (pb);
323	int h = gdk_pixbuf_get_height (pb);
324	int x, y, i;
325	guchar *dst;
326	int bpp = gdk_pixbuf_get_n_channels (pb);
327	guchar *src = gdk_pixbuf_get_pixels (pb);
328	int sstr = gdk_pixbuf_get_rowstride (pb);
329
330	for (y = 0; y < h; y++)
331	for (x = 0; x < w; x++)
332	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
333	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
334	}
335
336	#############################################################################
337
338	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
339
340	SV *
341	pb_to_hv84 (GdkPixbuf *pb)
342	CODE:
343	{
344	int w = gdk_pixbuf_get_width (pb);
345	int h = gdk_pixbuf_get_height (pb);
346	int x, y;
347	guchar *dst;
348	int bpp = gdk_pixbuf_get_n_channels (pb);
349	guchar *src = gdk_pixbuf_get_pixels (pb);
350	int sstr = gdk_pixbuf_get_rowstride (pb);
351		410
352	RETVAL = newSV (6 * 8 * 12 / 8);	411	RETVAL = newSV (6 * 8 * 12 / 8);
353	SvPOK_only (RETVAL);	412	SvPOK_only (RETVAL);
354	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	413	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
355		414
356	dst = SvPVX (RETVAL);	415	dst = (guchar *)SvPVX (RETVAL);
357		416
358	/* some primitive error distribution + random dithering */	417	/* some primitive error distribution + random dithering */
359		418
360	for (y = 0; y < h; y++)	419	for (y = 0; y < h; y++)
361	{	420	{
…		…
419	}	478	}
420	}	479	}
421	OUTPUT:	480	OUTPUT:
422	RETVAL	481	RETVAL
423		482
		483	#############################################################################
424		484
		485	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
425		486
		487	SV *
		488	make_histograms (SV *ar)
		489	CODE:
		490	{
		491	int i;
		492	AV av, result;
		493
		494	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		495	croak ("Not an array ref as first argument to make_histogram");
		496
		497	av = (AV *) SvRV (ar);
		498	result = newAV ();
		499
		500	for (i = 0; i <= av_len (av); ++i)
		501	{
		502	const int HISTSIZE = 64;
		503
		504	int j;
		505	SV sv = av_fetch (av, i, 1);
		506	STRLEN len;
		507	char *buf = SvPVbyte (sv, len);
		508
		509	int tmphist[HISTSIZE];
		510	float *hist;
		511
		512	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
		513	SvPOK_on (histsv);
		514	SvCUR_set (histsv, HISTSIZE * sizeof (float));
		515	hist = (float *)SvPVX (histsv);
		516
		517	Zero (tmphist, sizeof (tmphist), char);
		518
		519	for (j = len; j--; )
		520	{
		521	unsigned int idx
		522	= ((*buf & 0xc0) >> 2)
		523	\| ((*buf & 0x18) >> 1)
		524	\| (*buf & 0x03);
		525
		526	++tmphist[idx];
		527	++buf;
		528	}
		529
		530	for (j = 0; j < HISTSIZE; ++j)
		531	hist[j] = (float)tmphist[j] / (len + 1e-30);
		532
		533	av_push (result, histsv);
		534	}
		535
		536	RETVAL = newRV_noinc ((SV *)result);
		537	}
		538	OUTPUT:
		539	RETVAL
		540
		541

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing CV/CV.xs (file contents): Revision 1.13 by root, Tue Feb 8 11:03:30 2005 UTC vs. Revision 1.28 by root, Mon Aug 22 00:30:58 2005 UTC

Diff Legend

Comparing CV/CV.xs (file contents):
Revision 1.13 by root, Tue Feb 8 11:03:30 2005 UTC vs.
Revision 1.28 by root, Mon Aug 22 00:30:58 2005 UTC