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

Comparing CV/CV.xs (file contents):
Revision 1.14 by root, Tue Feb 8 12:51:12 2005 UTC vs.
Revision 1.32 by root, Wed Feb 15 08:36:55 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
		8	#include <magic.h>
		9
		10	#include <jpeglib.h>
		11	#include <glib.h>
		12	#include <gtk/gtk.h>
5	#include <gdk-pixbuf/gdk-pixbuf.h>	13	#include <gdk-pixbuf/gdk-pixbuf.h>
6		14
7	#include <gperl.h>	15	#include <gperl.h>
8	#include <gtk2perl.h>	16	#include <gtk2perl.h>
9		17
10	#define IW 80	18	#define IW 80 /* MUST match Schnauer.pm! */
		19	#define IH 60 /* MUST match Schnauer.pm! */
11		20
12	#define RAND (seed = (seed + 7141) * 54773 % 134456)	21	#define RAND (seed = (seed + 7141) * 54773 % 134456)
13		22
14	#define LINELENGTH 240	23	#define LINELENGTH 240
15		24
16	#define ELLIPSIS "\xe2\x80\xa6"	25	#define ELLIPSIS "\xe2\x80\xa6"
		26
		27	struct jpg_err_mgr
		28	{
		29	struct jpeg_error_mgr err;
		30	jmp_buf setjmp_buffer;
		31	};
		32
		33	static void
		34	cv_error_exit (j_common_ptr cinfo)
		35	{
		36	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
		37	}
		38
		39	static void
		40	cv_error_output (j_common_ptr cinfo)
		41	{
		42	return;
		43	}
		44
		45	static void
		46	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
		47	unsigned int h, unsigned int s, unsigned int *v)
		48	{
		49	unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
		50	unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
		51	unsigned int delta = mx - mn;
		52
		53	*v = mx;
		54
		55	s = mx ? delta 255 / mx : 0;
		56
		57	if (delta == 0)
		58	*h = 0;
		59	else
		60	{
		61	if (r == mx)
		62	h = ((int)g - (int)b) 255 / (int)(delta * 3);
		63	else if (g == mx)
		64	h = ((int)b - (int)r) 255 / (int)(delta * 3) + 52;
		65	else if (b == mx)
		66	h = ((int)r - (int)g) 255 / (int)(delta * 3) + 103;
		67
		68	*h &= 255;
		69	}
		70	}
17		71
18	static guint32 a85_val;	72	static guint32 a85_val;
19	static guint a85_cnt;	73	static guint a85_cnt;
20	static guchar a85_buf[LINELENGTH], *a85_ptr;	74	static guchar a85_buf[LINELENGTH], *a85_ptr;
21		75
68	*a85_ptr++ = '\n';	122	*a85_ptr++ = '\n';
69		123
70	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	124	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
71	}	125	}
72		126
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	/////////////////////////////////////////////////////////////////////////////	127	/////////////////////////////////////////////////////////////////////////////
101		128
102	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	129	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
103		130
104	PROTOTYPES: ENABLE	131	PROTOTYPES: ENABLE
105		132
		133	# missing function in perl. really :)
		134	int
		135	common_prefix_length (a, b)
		136	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		137	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		138	CODE:
		139	RETVAL = 0;
		140
		141	while (a == b && *a)
		142	{
		143	RETVAL += (*a & 0xc0) != 0x80;
		144	a++, b++;
		145	}
		146
		147	OUTPUT:
		148	RETVAL
		149
		150	const char *
		151	magic (const char *path)
		152	CODE:
		153	{
		154	static magic_t cookie;
		155
		156	if (!cookie)
		157	{
		158	cookie = magic_open (MAGIC_NONE);
		159
		160	if (cookie)
		161	magic_load (cookie, 0);
		162	else
		163	XSRETURN_UNDEF;
		164	}
		165
		166	RETVAL = magic_file (cookie, path);
		167	}
		168	OUTPUT:
		169	RETVAL
		170
		171	const char *
		172	magic_mime (const char *path)
		173	CODE:
		174	{
		175	static magic_t cookie;
		176
		177	if (!cookie)
		178	{
		179	cookie = magic_open (MAGIC_MIME);
		180
		181	if (cookie)
		182	magic_load (cookie, 0);
		183	else
		184	XSRETURN_UNDEF;
		185	}
		186
		187	RETVAL = magic_file (cookie, path);
		188	}
		189	OUTPUT:
		190	RETVAL
		191
		192	# missing in Gtk2 perl module
		193
		194	gboolean
		195	gdk_net_wm_supports (GdkAtom property)
		196	CODE:
		197	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		198	RETVAL = gdk_net_wm_supports (property);
		199	#else
		200	RETVAL = 0;
		201	#endif
		202	OUTPUT:
		203	RETVAL
		204
106	GdkPixbuf_noinc *	205	GdkPixbuf_noinc *
107	transpose (GdkPixbuf *pb)	206	dealpha_expose (GdkPixbuf *pb)
108	CODE:	207	CODE:
109	{	208	{
110	int w = gdk_pixbuf_get_width (pb);	209	int w = gdk_pixbuf_get_width (pb);
111	int h = gdk_pixbuf_get_height (pb);	210	int h = gdk_pixbuf_get_height (pb);
112	int bpp = gdk_pixbuf_get_n_channels (pb);	211	int bpp = gdk_pixbuf_get_n_channels (pb);
113	int x, y, i;	212	int x, y, i;
114	guchar src = gdk_pixbuf_get_pixels (pb), dst;	213	guchar src = gdk_pixbuf_get_pixels (pb), dst;
115	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	214	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
116		215
117	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	216	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
118		217
119	dst = gdk_pixbuf_get_pixels (RETVAL);	218	dst = gdk_pixbuf_get_pixels (RETVAL);
120	dstr = gdk_pixbuf_get_rowstride (RETVAL);	219	dstr = gdk_pixbuf_get_rowstride (RETVAL);
121		220
122	for (y = 0; y < h; y++)
123	for (x = 0; x < w; x++)	221	for (x = 0; x < w; x++)
		222	for (y = 0; y < h; y++)
124	for (i = 0; i < bpp; i++)	223	for (i = 0; i < 3; i++)
125	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	224	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
126	}	225	}
127	OUTPUT:	226	OUTPUT:
128	RETVAL	227	RETVAL
129		228
130	GdkPixbuf_noinc *	229	GdkPixbuf_noinc *
131	flop (GdkPixbuf *pb)	230	rotate (GdkPixbuf *pb, int angle)
132	CODE:	231	CODE:
133	{	232	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
134	int w = gdk_pixbuf_get_width (pb);	233	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
135	int h = gdk_pixbuf_get_height (pb);	234	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
136	int bpp = gdk_pixbuf_get_n_channels (pb);	235	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
137	int x, y, i;	236	: angle);
138	guchar src = gdk_pixbuf_get_pixels (pb), dst;	237	OUTPUT:
139	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	238	RETVAL
140		239
141	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	240	GdkPixbuf_noinc *
		241	load_jpeg (SV *path, int thumbnail=0)
		242	CODE:
		243	{
		244	struct jpeg_decompress_struct cinfo;
		245	struct jpg_err_mgr jerr;
		246	guchar *data;
		247	int rs;
		248	FILE *fp;
		249	volatile GdkPixbuf *pb = 0;
142		250
		251	RETVAL = 0;
		252
		253	fp = fopen (SvPVbyte_nolen (path), "rb");
		254
		255	if (!fp)
		256	XSRETURN_UNDEF;
		257
		258	cinfo.err = jpeg_std_error (&jerr.err);
		259
		260	jerr.err.error_exit = cv_error_exit;
		261	jerr.err.output_message = cv_error_output;
		262
		263	if ((rs = setjmp (jerr.setjmp_buffer)))
		264	{
		265	fclose (fp);
		266	jpeg_destroy_decompress (&cinfo);
		267
		268	if (pb)
		269	g_object_unref ((gpointer)pb);
		270
		271	XSRETURN_UNDEF;
		272	}
		273
		274	jpeg_create_decompress (&cinfo);
		275
		276	jpeg_stdio_src (&cinfo, fp);
		277	jpeg_read_header (&cinfo, TRUE);
		278
		279	cinfo.dct_method = JDCT_DEFAULT;
		280	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		281	cinfo.do_block_smoothing = FALSE;
		282	cinfo.out_color_space = JCS_RGB;
		283	cinfo.quantize_colors = FALSE;
		284
		285	cinfo.scale_num = 1;
		286	cinfo.scale_denom = 1;
		287
		288	jpeg_calc_output_dimensions (&cinfo);
		289
		290	if (thumbnail)
		291	{
		292	cinfo.dct_method = JDCT_FASTEST;
		293	cinfo.do_fancy_upsampling = FALSE;
		294
		295	while (cinfo.scale_denom < 8
		296	&& cinfo.output_width >= IW*4
		297	&& cinfo.output_height >= IH*4)
		298	{
		299	cinfo.scale_denom <<= 1;
		300	jpeg_calc_output_dimensions (&cinfo);
		301	}
		302	}
		303
		304	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
		305	if (!RETVAL)
		306	longjmp (jerr.setjmp_buffer, 2);
		307
143	dst = gdk_pixbuf_get_pixels (RETVAL);	308	data = gdk_pixbuf_get_pixels (RETVAL);
144	dstr = gdk_pixbuf_get_rowstride (RETVAL);	309	rs = gdk_pixbuf_get_rowstride (RETVAL);
145		310
146	for (y = 0; y < h; y++)	311	if (cinfo.output_components != 3)
147	for (x = 0; x < w; x++)	312	longjmp (jerr.setjmp_buffer, 3);
148	for (i = 0; i < bpp; i++)	313
149	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];	314	jpeg_start_decompress (&cinfo);
		315
		316	while (cinfo.output_scanline < cinfo.output_height)
		317	{
		318	int remaining = cinfo.output_height - cinfo.output_scanline;
		319	JSAMPROW rp[4];
		320
		321	rp [0] = data + cinfo.output_scanline * rs;
		322	rp [1] = (guchar *)rp [0] + rs;
		323	rp [2] = (guchar *)rp [1] + rs;
		324	rp [3] = (guchar *)rp [2] + rs;
		325
		326	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		327	}
		328
		329	jpeg_finish_decompress (&cinfo);
		330	fclose (fp);
		331	jpeg_destroy_decompress (&cinfo);
150	}	332	}
151	OUTPUT:	333	OUTPUT:
152	RETVAL	334	RETVAL
153		335
154	#############################################################################	336	#############################################################################
155		337
156	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	338	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
157		339
		340	SV *
		341	foldcase (SV *pathsv)
		342	PROTOTYPE: $
		343	CODE:
		344	{
		345	STRLEN plen;
		346	U8 path = (U8 )SvPVutf8 (pathsv, plen);
		347	U8 *pend = path + plen;
		348	U8 dst [plen * 6 * 3], *dstp = dst;
		349
		350	while (path < pend)
		351	{
		352	U8 ch = *path;
		353
		354	if (ch >= 'a' && ch <= 'z')
		355	dstp++ = path++;
		356	else if (ch >= '0' && ch <= '9')
		357	{
		358	STRLEN el, nl = 0;
		359	while (path >= '0' && path <= '9' && path < pend)
		360	path++, nl++;
		361
		362	for (el = nl; el < 6; el++)
		363	*dstp++ = '0';
		364
		365	memcpy (dstp, path - nl, nl);
		366	dstp += nl;
		367	}
		368	else
		369	{
		370	STRLEN cl;
		371	to_utf8_fold (path, dstp, &cl);
		372	dstp += cl;
		373	path += is_utf8_char (path);
		374	}
		375	}
		376
		377	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		378	}
		379	OUTPUT:
		380	RETVAL
		381
158	GdkPixbuf_noinc *	382	GdkPixbuf_noinc *
159	p7_to_pb (int w, int h, guchar *src)	383	p7_to_pb (int w, int h, SV *src_sv)
		384	PROTOTYPE: @
160	CODE:	385	CODE:
161	{	386	{
162	int x, y;	387	int x, y;
163	guchar dst, d;	388	guchar dst, d;
164	int dstr;	389	int dstr;
		390	guchar src = (guchar )SvPVbyte_nolen (src_sv);
165		391
166	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	392	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
167	dst = gdk_pixbuf_get_pixels (RETVAL);	393	dst = gdk_pixbuf_get_pixels (RETVAL);
168	dstr = gdk_pixbuf_get_rowstride (RETVAL);	394	dstr = gdk_pixbuf_get_rowstride (RETVAL);
169		395
…		…
178	}	404	}
179	}	405	}
180	OUTPUT:	406	OUTPUT:
181	RETVAL	407	RETVAL
182		408
		409	#############################################################################
		410
		411	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		412
		413	void
		414	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		415	CODE:
		416	{
		417	int w = gdk_pixbuf_get_width (pb);
		418	int h = gdk_pixbuf_get_height (pb);
		419	int x, y, i;
		420	guchar *dst;
		421	int bpp = gdk_pixbuf_get_n_channels (pb);
		422	guchar *src = gdk_pixbuf_get_pixels (pb);
		423	int sstr = gdk_pixbuf_get_rowstride (pb);
		424
		425	a85_init ();
		426
		427	for (y = 0; y < h; y++)
		428	for (x = 0; x < w; x++)
		429	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		430	a85_push (fp, src [x * bpp + y * sstr + i]);
		431
		432	a85_finish (fp);
		433	}
		434
		435	void
		436	dump_binary (PerlIO fp, GdkPixbuf pb)
		437	CODE:
		438	{
		439	int w = gdk_pixbuf_get_width (pb);
		440	int h = gdk_pixbuf_get_height (pb);
		441	int x, y, i;
		442	guchar *dst;
		443	int bpp = gdk_pixbuf_get_n_channels (pb);
		444	guchar *src = gdk_pixbuf_get_pixels (pb);
		445	int sstr = gdk_pixbuf_get_rowstride (pb);
		446
		447	for (y = 0; y < h; y++)
		448	for (x = 0; x < w; x++)
		449	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		450	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		451	}
		452
		453	#############################################################################
		454
		455	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		456
183	SV *	457	SV *
184	pb_to_p7 (GdkPixbuf *pb)	458	pb_to_hv84 (GdkPixbuf *pb)
185	CODE:	459	CODE:
186	{	460	{
187	int w = gdk_pixbuf_get_width (pb);	461	int w = gdk_pixbuf_get_width (pb);
188	int h = gdk_pixbuf_get_height (pb);	462	int h = gdk_pixbuf_get_height (pb);
189	int x, y;	463	int x, y;
190	guchar *dst;	464	guchar *dst;
191	int bpp = gdk_pixbuf_get_n_channels (pb);	465	int bpp = gdk_pixbuf_get_n_channels (pb);
192	guchar *src = gdk_pixbuf_get_pixels (pb);	466	guchar *src = gdk_pixbuf_get_pixels (pb);
193	int sstr = gdk_pixbuf_get_rowstride (pb);	467	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	j = len;
272
273	while (len--)
274	++tmphist[(unsigned char)*buf++ & 0xda];
275
276	len = j;
277
278	bigst = 1;
279	for (j = 0; j < 256; ++j)
280	if (tmphist[j] > bigst)
281	bigst = tmphist[j];
282
283	for (j = 0; j < 256; ++j)
284	hist[j] = tmphist[j] * 255 / (len == 0 ? 1 : len);//bigst;
285
286	av_push (result, histsv);
287	}
288
289	RETVAL = newRV_noinc ((SV *)result);
290	}
291	OUTPUT:
292	RETVAL
293
294
295
296	#############################################################################
297
298	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
299
300	void
301	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
302	CODE:
303	{
304	int w = gdk_pixbuf_get_width (pb);
305	int h = gdk_pixbuf_get_height (pb);
306	int x, y, i;
307	guchar *dst;
308	int bpp = gdk_pixbuf_get_n_channels (pb);
309	guchar *src = gdk_pixbuf_get_pixels (pb);
310	int sstr = gdk_pixbuf_get_rowstride (pb);
311
312	a85_init ();
313
314	for (y = 0; y < h; y++)
315	for (x = 0; x < w; x++)
316	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
317	a85_push (fp, src [x * bpp + y * sstr + i]);
318
319	a85_finish (fp);
320	}
321
322	void
323	dump_binary (PerlIO fp, GdkPixbuf pb)
324	CODE:
325	{
326	int w = gdk_pixbuf_get_width (pb);
327	int h = gdk_pixbuf_get_height (pb);
328	int x, y, i;
329	guchar *dst;
330	int bpp = gdk_pixbuf_get_n_channels (pb);
331	guchar *src = gdk_pixbuf_get_pixels (pb);
332	int sstr = gdk_pixbuf_get_rowstride (pb);
333
334	for (y = 0; y < h; y++)
335	for (x = 0; x < w; x++)
336	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
337	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
338	}
339
340	#############################################################################
341
342	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
343
344	SV *
345	pb_to_hv84 (GdkPixbuf *pb)
346	CODE:
347	{
348	int w = gdk_pixbuf_get_width (pb);
349	int h = gdk_pixbuf_get_height (pb);
350	int x, y;
351	guchar *dst;
352	int bpp = gdk_pixbuf_get_n_channels (pb);
353	guchar *src = gdk_pixbuf_get_pixels (pb);
354	int sstr = gdk_pixbuf_get_rowstride (pb);
355		468
356	RETVAL = newSV (6 * 8 * 12 / 8);	469	RETVAL = newSV (6 * 8 * 12 / 8);
357	SvPOK_only (RETVAL);	470	SvPOK_only (RETVAL);
358	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	471	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
359		472
360	dst = SvPVX (RETVAL);	473	dst = (guchar *)SvPVX (RETVAL);
361		474
362	/* some primitive error distribution + random dithering */	475	/* some primitive error distribution + random dithering */
363		476
364	for (y = 0; y < h; y++)	477	for (y = 0; y < h; y++)
365	{	478	{
…		…
423	}	536	}
424	}	537	}
425	OUTPUT:	538	OUTPUT:
426	RETVAL	539	RETVAL
427		540
		541	#############################################################################
428		542
		543	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
429		544
		545	SV *
		546	make_histograms (SV *ar)
		547	CODE:
		548	{
		549	int i;
		550	AV av, result;
		551
		552	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		553	croak ("Not an array ref as first argument to make_histogram");
		554
		555	av = (AV *) SvRV (ar);
		556	result = newAV ();
		557
		558	for (i = 0; i <= av_len (av); ++i)
		559	{
		560	const int HISTSIZE = 64;
		561
		562	int j;
		563	SV sv = av_fetch (av, i, 1);
		564	STRLEN len;
		565	char *buf = SvPVbyte (sv, len);
		566
		567	int tmphist[HISTSIZE];
		568	float *hist;
		569
		570	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
		571	SvPOK_on (histsv);
		572	SvCUR_set (histsv, HISTSIZE * sizeof (float));
		573	hist = (float *)SvPVX (histsv);
		574
		575	Zero (tmphist, sizeof (tmphist), char);
		576
		577	for (j = len; j--; )
		578	{
		579	unsigned int idx
		580	= ((*buf & 0xc0) >> 2)
		581	\| ((*buf & 0x18) >> 1)
		582	\| (*buf & 0x03);
		583
		584	++tmphist[idx];
		585	++buf;
		586	}
		587
		588	for (j = 0; j < HISTSIZE; ++j)
		589	hist[j] = (float)tmphist[j] / (len + 1e-30);
		590
		591	av_push (result, histsv);
		592	}
		593
		594	RETVAL = newRV_noinc ((SV *)result);
		595	}
		596	OUTPUT:
		597	RETVAL
		598
		599

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Comparing CV/CV.xs (file contents): Revision 1.14 by root, Tue Feb 8 12:51:12 2005 UTC vs. Revision 1.32 by root, Wed Feb 15 08:36:55 2006 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.14 by root, Tue Feb 8 12:51:12 2005 UTC vs.
Revision 1.32 by root, Wed Feb 15 08:36:55 2006 UTC