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

Comparing CV/CV.xs (file contents):
Revision 1.17 by root, Wed Jul 20 06:20:36 2005 UTC vs.
Revision 1.36 by root, Thu Jun 22 20:50:05 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>
5	#include <setjmp.h>	6	#include <setjmp.h>
		7	#include <math.h>
		8
		9	#include <magic.h>
6		10
7	#include <jpeglib.h>	11	#include <jpeglib.h>
		12	#include <glib.h>
		13	#include <gtk/gtk.h>
8	#include <gdk-pixbuf/gdk-pixbuf.h>	14	#include <gdk-pixbuf/gdk-pixbuf.h>
9		15
10	#include <gperl.h>	16	#include <gperl.h>
11	#include <gtk2perl.h>	17	#include <gtk2perl.h>
12		18
13	#define IW 80 /* MUST match Schnauer.pm! */	19	#define IW 80 /* MUST match Schnauzer.pm! */
14	#define IH 60 /* MUST match Schnauer.pm! */	20	#define IH 60 /* MUST match Schnauzer.pm! */
15		21
16	#define RAND (seed = (seed + 7141) * 54773 % 134456)	22	#define RAND (seed = (seed + 7141) * 54773 % 134456)
17		23
18	#define LINELENGTH 240	24	#define LINELENGTH 240
19		25
62		68
63	*h &= 255;	69	*h &= 255;
64	}	70	}
65	}	71	}
66		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	// this is a peculiar weightung, but it works fine
		124	f->v1 /= 255.;
		125	f->v2 /= 128. * 128.;
		126	f->v3 /= 128. * 128. * 64.;
		127	}
		128
67	static guint32 a85_val;	129	static guint32 a85_val;
68	static guint a85_cnt;	130	static guint a85_cnt;
69	static guchar a85_buf[LINELENGTH], *a85_ptr;	131	static guchar a85_buf[LINELENGTH], *a85_ptr;
70		132
71	static void	133	static void
…		…
123		185
124	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	186	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
125		187
126	PROTOTYPES: ENABLE	188	PROTOTYPES: ENABLE
127		189
		190	# missing function in perl. really :)
		191	int
		192	common_prefix_length (a, b)
		193	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		194	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		195	CODE:
		196	RETVAL = 0;
		197
		198	while (a == b && *a)
		199	{
		200	RETVAL += (*a & 0xc0) != 0x80;
		201	a++, b++;
		202	}
		203
		204	OUTPUT:
		205	RETVAL
		206
		207	const char *
		208	magic (const char *path)
		209	CODE:
		210	{
		211	static magic_t cookie;
		212
		213	if (!cookie)
		214	{
		215	cookie = magic_open (MAGIC_NONE);
		216
		217	if (cookie)
		218	magic_load (cookie, 0);
		219	else
		220	XSRETURN_UNDEF;
		221	}
		222
		223	RETVAL = magic_file (cookie, path);
		224	}
		225	OUTPUT:
		226	RETVAL
		227
		228	const char *
		229	magic_mime (const char *path)
		230	CODE:
		231	{
		232	static magic_t cookie;
		233
		234	if (!cookie)
		235	{
		236	cookie = magic_open (MAGIC_MIME);
		237
		238	if (cookie)
		239	magic_load (cookie, 0);
		240	else
		241	XSRETURN_UNDEF;
		242	}
		243
		244	RETVAL = magic_file (cookie, path);
		245	}
		246	OUTPUT:
		247	RETVAL
		248
		249	# missing in Gtk2 perl module
		250
		251	gboolean
		252	gdk_net_wm_supports (GdkAtom property)
		253	CODE:
		254	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		255	RETVAL = gdk_net_wm_supports (property);
		256	#else
		257	RETVAL = 0;
		258	#endif
		259	OUTPUT:
		260	RETVAL
		261
128	GdkPixbuf_noinc *	262	GdkPixbuf_noinc *
129	transpose (GdkPixbuf *pb)	263	dealpha_expose (GdkPixbuf *pb)
130	CODE:	264	CODE:
131	{	265	{
132	int w = gdk_pixbuf_get_width (pb);	266	int w = gdk_pixbuf_get_width (pb);
133	int h = gdk_pixbuf_get_height (pb);	267	int h = gdk_pixbuf_get_height (pb);
134	int bpp = gdk_pixbuf_get_n_channels (pb);	268	int bpp = gdk_pixbuf_get_n_channels (pb);
135	int x, y, i;	269	int x, y, i;
136	guchar src = gdk_pixbuf_get_pixels (pb), dst;	270	guchar src = gdk_pixbuf_get_pixels (pb), dst;
137	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	271	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
138		272
139	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	273	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
140		274
141	dst = gdk_pixbuf_get_pixels (RETVAL);	275	dst = gdk_pixbuf_get_pixels (RETVAL);
142	dstr = gdk_pixbuf_get_rowstride (RETVAL);	276	dstr = gdk_pixbuf_get_rowstride (RETVAL);
143		277
144	for (y = 0; y < h; y++)
145	for (x = 0; x < w; x++)	278	for (x = 0; x < w; x++)
		279	for (y = 0; y < h; y++)
146	for (i = 0; i < bpp; i++)	280	for (i = 0; i < 3; i++)
147	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	281	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
148	}	282	}
149	OUTPUT:	283	OUTPUT:
150	RETVAL	284	RETVAL
151		285
152	GdkPixbuf_noinc *	286	GdkPixbuf_noinc *
153	flop (GdkPixbuf *pb)	287	rotate (GdkPixbuf *pb, int angle)
154	CODE:	288	CODE:
155	{	289	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
156	int w = gdk_pixbuf_get_width (pb);	290	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
157	int h = gdk_pixbuf_get_height (pb);	291	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
158	int bpp = gdk_pixbuf_get_n_channels (pb);	292	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
159	int x, y, i;	293	: angle);
160	guchar src = gdk_pixbuf_get_pixels (pb), dst;
161	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
162
163	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);
164
165	dst = gdk_pixbuf_get_pixels (RETVAL);
166	dstr = gdk_pixbuf_get_rowstride (RETVAL);
167
168	for (y = 0; y < h; y++)
169	for (x = 0; x < w; x++)
170	for (i = 0; i < bpp; i++)
171	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
172	}
173	OUTPUT:	294	OUTPUT:
174	RETVAL	295	RETVAL
175		296
176	GdkPixbuf_noinc *	297	GdkPixbuf_noinc *
177	load_jpeg (char *path, int thumbnail=0)	298	load_jpeg (SV *path, int thumbnail=0)
178	CODE:	299	CODE:
179	{	300	{
180	struct jpeg_decompress_struct cinfo;	301	struct jpeg_decompress_struct cinfo;
181	struct jpg_err_mgr jerr;	302	struct jpg_err_mgr jerr;
182	guchar *data;	303	guchar *data;
183	int rs;	304	int rs;
184	FILE *fp;	305	FILE *fp;
185	volatile GdkPixbuf *pb = 0;	306	volatile GdkPixbuf *pb = 0;
		307
186	RETVAL = 0;	308	RETVAL = 0;
187		309
188	if (!(fp = fopen (path, "rb")))	310	fp = fopen (SvPVbyte_nolen (path), "rb");
		311
		312	if (!fp)
189	XSRETURN_UNDEF;	313	XSRETURN_UNDEF;
190		314
191	cinfo.err = jpeg_std_error (&jerr.err);	315	cinfo.err = jpeg_std_error (&jerr.err);
192		316
193	jerr.err.error_exit = cv_error_exit;	317	jerr.err.error_exit = cv_error_exit;
…		…
224	{	348	{
225	cinfo.dct_method = JDCT_FASTEST;	349	cinfo.dct_method = JDCT_FASTEST;
226	cinfo.do_fancy_upsampling = FALSE;	350	cinfo.do_fancy_upsampling = FALSE;
227		351
228	while (cinfo.scale_denom < 8	352	while (cinfo.scale_denom < 8
229	&& (cinfo.output_width >> 1) >= IW	353	&& cinfo.output_width >= IW*4
230	&& (cinfo.output_height >> 1) >= IH)	354	&& cinfo.output_height >= IH*4)
231	{	355	{
232	cinfo.scale_denom <<= 1;	356	cinfo.scale_denom <<= 1;
233	jpeg_calc_output_dimensions (&cinfo);	357	jpeg_calc_output_dimensions (&cinfo);
234	}	358	}
235	}	359	}
…		…
264	jpeg_destroy_decompress (&cinfo);	388	jpeg_destroy_decompress (&cinfo);
265	}	389	}
266	OUTPUT:	390	OUTPUT:
267	RETVAL	391	RETVAL
268		392
		393	void
		394	compare (GdkPixbuf a, GdkPixbuf b)
		395	PPCODE:
		396	{
		397	int w = gdk_pixbuf_get_width (a);
		398	int h = gdk_pixbuf_get_height (a);
		399	int sa = gdk_pixbuf_get_rowstride (a);
		400	int sb = gdk_pixbuf_get_rowstride (b);
		401
		402	guchar *pa = gdk_pixbuf_get_pixels (a);
		403	guchar *pb = gdk_pixbuf_get_pixels (b);
		404
		405	int x, y;
		406
		407	assert (w == gdk_pixbuf_get_width (b));
		408	assert (h == gdk_pixbuf_get_height (b));
		409
		410	assert (gdk_pixbuf_get_n_channels (a) == 3);
		411	assert (gdk_pixbuf_get_n_channels (b) == 3);
		412
		413	double diff = 0.;
		414	int peak = 0;
		415
		416	if (w && h)
		417	for (y = 0; y < h; y++)
		418	{
		419	guchar pa_ = pa + y sa;
		420	guchar pb_ = pb + y sb;
		421
		422	for (x = 0; x < w; x++)
		423	{
		424	int d;
		425
		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	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		429	}
		430	}
		431
		432	EXTEND (SP, 2);
		433	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		434	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		435	}
		436
269	#############################################################################	437	#############################################################################
270		438
271	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	439	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
272		440
		441	SV *
		442	foldcase (SV *pathsv)
		443	PROTOTYPE: $
		444	CODE:
		445	{
		446	STRLEN plen;
		447	U8 path = (U8 )SvPVutf8 (pathsv, plen);
		448	U8 *pend = path + plen;
		449	U8 dst [plen * 6 * 3], *dstp = dst;
		450
		451	while (path < pend)
		452	{
		453	U8 ch = *path;
		454
		455	if (ch >= 'a' && ch <= 'z')
		456	dstp++ = path++;
		457	else if (ch >= '0' && ch <= '9')
		458	{
		459	STRLEN el, nl = 0;
		460	while (path >= '0' && path <= '9' && path < pend)
		461	path++, nl++;
		462
		463	for (el = nl; el < 6; el++)
		464	*dstp++ = '0';
		465
		466	memcpy (dstp, path - nl, nl);
		467	dstp += nl;
		468	}
		469	else
		470	{
		471	STRLEN cl;
		472	to_utf8_fold (path, dstp, &cl);
		473	dstp += cl;
		474	path += is_utf8_char (path);
		475	}
		476	}
		477
		478	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		479	}
		480	OUTPUT:
		481	RETVAL
		482
273	GdkPixbuf_noinc *	483	GdkPixbuf_noinc *
274	p7_to_pb (int w, int h, guchar *src)	484	p7_to_pb (int w, int h, SV *src_sv)
		485	PROTOTYPE: @
275	CODE:	486	CODE:
276	{	487	{
277	int x, y;	488	int x, y;
278	guchar dst, d;	489	guchar dst, d;
279	int dstr;	490	int dstr;
		491	guchar src = (guchar )SvPVbyte_nolen (src_sv);
280		492
281	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	493	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
282	dst = gdk_pixbuf_get_pixels (RETVAL);	494	dst = gdk_pixbuf_get_pixels (RETVAL);
283	dstr = gdk_pixbuf_get_rowstride (RETVAL);	495	dstr = gdk_pixbuf_get_rowstride (RETVAL);
284		496
…		…
293	}	505	}
294	}	506	}
295	OUTPUT:	507	OUTPUT:
296	RETVAL	508	RETVAL
297		509
		510	#############################################################################
		511
		512	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		513
		514	void
		515	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		516	CODE:
		517	{
		518	int w = gdk_pixbuf_get_width (pb);
		519	int h = gdk_pixbuf_get_height (pb);
		520	int x, y, i;
		521	guchar *dst;
		522	int bpp = gdk_pixbuf_get_n_channels (pb);
		523	guchar *src = gdk_pixbuf_get_pixels (pb);
		524	int sstr = gdk_pixbuf_get_rowstride (pb);
		525
		526	a85_init ();
		527
		528	for (y = 0; y < h; y++)
		529	for (x = 0; x < w; x++)
		530	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		531	a85_push (fp, src [x * bpp + y * sstr + i]);
		532
		533	a85_finish (fp);
		534	}
		535
		536	void
		537	dump_binary (PerlIO fp, GdkPixbuf pb)
		538	CODE:
		539	{
		540	int w = gdk_pixbuf_get_width (pb);
		541	int h = gdk_pixbuf_get_height (pb);
		542	int x, y, i;
		543	guchar *dst;
		544	int bpp = gdk_pixbuf_get_n_channels (pb);
		545	guchar *src = gdk_pixbuf_get_pixels (pb);
		546	int sstr = gdk_pixbuf_get_rowstride (pb);
		547
		548	for (y = 0; y < h; y++)
		549	for (x = 0; x < w; x++)
		550	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		551	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		552	}
		553
		554	#############################################################################
		555
		556	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		557
298	SV *	558	SV *
299	pb_to_p7 (GdkPixbuf *pb)	559	pb_to_hv84 (GdkPixbuf *pb)
300	CODE:	560	CODE:
301	{	561	{
302	int w = gdk_pixbuf_get_width (pb);	562	int w = gdk_pixbuf_get_width (pb);
303	int h = gdk_pixbuf_get_height (pb);	563	int h = gdk_pixbuf_get_height (pb);
304	int x, y;	564	int x, y;
305	guchar *dst;	565	guchar *dst;
306	int bpp = gdk_pixbuf_get_n_channels (pb);	566	int bpp = gdk_pixbuf_get_n_channels (pb);
307	guchar *src = gdk_pixbuf_get_pixels (pb);	567	guchar *src = gdk_pixbuf_get_pixels (pb);
308	int sstr = gdk_pixbuf_get_rowstride (pb);	568	int sstr = gdk_pixbuf_get_rowstride (pb);
309	int Er[IW], Eg[IW], Eb[IW];
310	int seed = 77;
311		569
312	RETVAL = newSV (w * h);	570	RETVAL = newSV (6 * 8 * 12 / 8);
313	SvPOK_only (RETVAL);	571	SvPOK_only (RETVAL);
314	SvCUR_set (RETVAL, w * h);	572	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
315		573
316	dst = SvPVX (RETVAL);	574	dst = (guchar *)SvPVX (RETVAL);
317
318	memset (Er, 0, sizeof (int) * IW);
319	memset (Eg, 0, sizeof (int) * IW);
320	memset (Eb, 0, sizeof (int) * IW);
321		575
322	/* some primitive error distribution + random dithering */	576	/* some primitive error distribution + random dithering */
323		577
324	for (y = 0; y < h; y++)	578	for (y = 0; y < h; y++)
325	{	579	{
326	int er = 0, eg = 0, eb = 0;	580	guchar p = src + y sstr;
327		581
328	for (x = 0; x < w; x++)	582	for (x = 0; x < w; x += 2)
329	{	583	{
330	int r, g, b;	584	unsigned int r, g, b, h, s, v, H, V1, V2;
331	guchar p = src + x bpp + y * sstr;
332		585
333	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;	586	if (bpp == 3)
334	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;	587	r = p++, g = p++, b = *p++;
335	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;	588	else if (bpp == 1)
		589	r = g = b = *p++;
		590	else
		591	abort ();
336		592
337	r = r > 7 ? 7 : r < 0 ? 0 : r;	593	rgb_to_hsv (r, g, b, &h, &s, &v);
338	g = g > 7 ? 7 : g < 0 ? 0 : g;
339	b = b > 3 ? 3 : b < 0 ? 0 : b;
340		594
341	er += p[0] - (r * 255 + 4) / 7;	595	H = (h * 15 / 255) << 4;
342	eg += p[1] - (g * 255 + 4) / 7;	596	V1 = v;
343	eb += p[2] - (b * 255 + 2) / 3;
344		597
345	Er[x] = er >> 1; er -= (er + 1) >> 1;	598	if (bpp == 3)
346	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;	599	r = p++, g = p++, b = *p++;
347	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;	600	else if (bpp == 1)
		601	r = g = b = *p++;
		602	else
		603	abort ();
348		604
349	*dst++ = r << 5 \| g << 2 \| b;	605	rgb_to_hsv (r, g, b, &h, &s, &v);
		606
		607	H \|= h * 15 / 255;
		608	V2 = v;
		609
		610	*dst++ = H;
		611	*dst++ = V1;
		612	*dst++ = V2;
350	}	613	}
351	}	614	}
352	}	615	}
353	OUTPUT:	616	OUTPUT:
354	RETVAL	617	RETVAL
355		618
356	SV *	619	SV *
		620	hv84_to_av (unsigned char *hv84)
		621	CODE:
		622	{
		623	int i = 72 / 3;
		624	AV *av = newAV ();
		625
		626	RETVAL = (SV )newRV_noinc ((SV )av);
		627	while (i--)
		628	{
		629	int h = *hv84++;
		630	int v1 = *hv84++;
		631	int v2 = *hv84++;
		632
		633	av_push (av, newSViv (v1));
		634	av_push (av, newSViv ((h >> 4) * 255 / 15));
		635	av_push (av, newSViv (v2));
		636	av_push (av, newSViv ((h & 15) * 255 / 15));
		637	}
		638	}
		639	OUTPUT:
		640	RETVAL
		641
		642	#############################################################################
		643
		644	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
		645
		646	SV *
		647	extract_features (SV *ar)
		648	CODE:
		649	{
		650	int i;
		651	AV av, result;
		652
		653	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		654	croak ("Not an array ref as first argument to make_histogram");
		655
		656	av = (AV *) SvRV (ar);
		657	result = newAV ();
		658
		659	for (i = 0; i <= av_len (av); ++i)
		660	{
		661	SV sv = av_fetch (av, i, 1);
		662	SV histsv = newSV (9 sizeof (float) + 1);
		663
		664	SvPOK_on (histsv);
		665	SvCUR_set (histsv, 9 * sizeof (float));
		666	float hist = (float )SvPVX (histsv);
		667
		668	struct feature f_h, f_s, f_v;
		669	feature_init (&f_h);
		670	feature_init (&f_s);
		671	feature_init (&f_v);
		672
		673	{
		674	STRLEN len;
		675	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		676	while (len >= 3)
		677	{
		678	unsigned int r, g, b, h, s, v;
		679	r = buf++; g = buf++; b = *buf++;
		680	rgb_to_hsv (r, g, b, &h, &s, &v);
		681
		682	feature_update_pass_1 (&f_h, h);
		683	feature_update_pass_1 (&f_s, s);
		684	feature_update_pass_1 (&f_v, v);
		685
		686	len -= 3;
		687	}
		688
		689	feature_finish_pass_1 (&f_h);
		690	feature_finish_pass_1 (&f_s);
		691	feature_finish_pass_1 (&f_v);
		692	}
		693
		694	{
		695	STRLEN len;
		696	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		697	while (len >= 3)
		698	{
		699	unsigned int r, g, b, h, s, v;
		700	r = buf++; g = buf++; b = *buf++;
		701	rgb_to_hsv (r, g, b, &h, &s, &v);
		702
		703	feature_update_pass_2 (&f_h, h);
		704	feature_update_pass_2 (&f_s, s);
		705	feature_update_pass_2 (&f_v, v);
		706
		707	len -= 3;
		708	}
		709
		710	feature_finish_pass_2 (&f_h);
		711	feature_finish_pass_2 (&f_s);
		712	feature_finish_pass_2 (&f_v);
		713	}
		714
		715	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		716	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		717	hist [6] = f_v.v1 ; hist [7] = f_v.v2 ; hist [8] = f_v.v3 ;
		718
		719	av_push (result, histsv);
		720	}
		721
		722	RETVAL = newRV_noinc ((SV *)result);
		723	}
		724	OUTPUT:
		725	RETVAL
		726
		727	SV *
357	make_histogram (SV *ar)	728	make_histograms (SV *ar)
358	CODE:	729	CODE:
359	{	730	{
360	int i;	731	int i;
361	AV av, result;	732	AV av, result;
362		733
…		…
405	RETVAL = newRV_noinc ((SV *)result);	776	RETVAL = newRV_noinc ((SV *)result);
406	}	777	}
407	OUTPUT:	778	OUTPUT:
408	RETVAL	779	RETVAL
409		780
410	#############################################################################
411		781
412	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
413
414	void
415	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
416	CODE:
417	{
418	int w = gdk_pixbuf_get_width (pb);
419	int h = gdk_pixbuf_get_height (pb);
420	int x, y, i;
421	guchar *dst;
422	int bpp = gdk_pixbuf_get_n_channels (pb);
423	guchar *src = gdk_pixbuf_get_pixels (pb);
424	int sstr = gdk_pixbuf_get_rowstride (pb);
425
426	a85_init ();
427
428	for (y = 0; y < h; y++)
429	for (x = 0; x < w; x++)
430	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
431	a85_push (fp, src [x * bpp + y * sstr + i]);
432
433	a85_finish (fp);
434	}
435
436	void
437	dump_binary (PerlIO fp, GdkPixbuf pb)
438	CODE:
439	{
440	int w = gdk_pixbuf_get_width (pb);
441	int h = gdk_pixbuf_get_height (pb);
442	int x, y, i;
443	guchar *dst;
444	int bpp = gdk_pixbuf_get_n_channels (pb);
445	guchar *src = gdk_pixbuf_get_pixels (pb);
446	int sstr = gdk_pixbuf_get_rowstride (pb);
447
448	for (y = 0; y < h; y++)
449	for (x = 0; x < w; x++)
450	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
451	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
452	}
453
454	#############################################################################
455
456	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
457
458	SV *
459	pb_to_hv84 (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;
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	RETVAL = newSV (6 * 8 * 12 / 8);
471	SvPOK_only (RETVAL);
472	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
473
474	dst = SvPVX (RETVAL);
475
476	/* some primitive error distribution + random dithering */
477
478	for (y = 0; y < h; y++)
479	{
480	guchar p = src + y sstr;
481
482	for (x = 0; x < w; x += 2)
483	{
484	unsigned int r, g, b, h, s, v, H, V1, V2;
485
486	if (bpp == 3)
487	r = p++, g = p++, b = *p++;
488	else if (bpp == 1)
489	r = g = b = *p++;
490	else
491	abort ();
492
493	rgb_to_hsv (r, g, b, &h, &s, &v);
494
495	H = (h * 15 / 255) << 4;
496	V1 = v;
497
498	if (bpp == 3)
499	r = p++, g = p++, b = *p++;
500	else if (bpp == 1)
501	r = g = b = *p++;
502	else
503	abort ();
504
505	rgb_to_hsv (r, g, b, &h, &s, &v);
506
507	H \|= h * 15 / 255;
508	V2 = v;
509
510	*dst++ = H;
511	*dst++ = V1;
512	*dst++ = V2;
513	}
514	}
515	}
516	OUTPUT:
517	RETVAL
518
519	SV *
520	hv84_to_av (unsigned char *hv84)
521	CODE:
522	{
523	int i = 72 / 3;
524	AV *av = newAV ();
525
526	RETVAL = (SV )newRV_noinc ((SV )av);
527	while (i--)
528	{
529	int h = *hv84++;
530	int v1 = *hv84++;
531	int v2 = *hv84++;
532
533	av_push (av, newSViv (v1));
534	av_push (av, newSViv ((h >> 4) * 255 / 15));
535	av_push (av, newSViv (v2));
536	av_push (av, newSViv ((h & 15) * 255 / 15));
537	}
538	}
539	OUTPUT:
540	RETVAL
541
542
543

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Comparing CV/CV.xs (file contents): Revision 1.17 by root, Wed Jul 20 06:20:36 2005 UTC vs. Revision 1.36 by root, Thu Jun 22 20:50:05 2006 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.17 by root, Wed Jul 20 06:20:36 2005 UTC vs.
Revision 1.36 by root, Thu Jun 22 20:50:05 2006 UTC