[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 1.35 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
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	}
17		72
18	static guint32 a85_val;	73	static guint32 a85_val;
19	static guint a85_cnt;	74	static guint a85_cnt;
20	static guchar a85_buf[LINELENGTH], *a85_ptr;	75	static guchar a85_buf[LINELENGTH], *a85_ptr;
21		76
68	*a85_ptr++ = '\n';	123	*a85_ptr++ = '\n';
69		124
70	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	125	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
71	}	126	}
72		127
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	/////////////////////////////////////////////////////////////////////////////	128	/////////////////////////////////////////////////////////////////////////////
101		129
102	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	130	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
103		131
104	PROTOTYPES: ENABLE	132	PROTOTYPES: ENABLE
105		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
106	GdkPixbuf_noinc *	206	GdkPixbuf_noinc *
107	transpose (GdkPixbuf *pb)	207	dealpha_expose (GdkPixbuf *pb)
108	CODE:	208	CODE:
109	{	209	{
110	int w = gdk_pixbuf_get_width (pb);	210	int w = gdk_pixbuf_get_width (pb);
111	int h = gdk_pixbuf_get_height (pb);	211	int h = gdk_pixbuf_get_height (pb);
112	int bpp = gdk_pixbuf_get_n_channels (pb);	212	int bpp = gdk_pixbuf_get_n_channels (pb);
113	int x, y, i;	213	int x, y, i;
114	guchar src = gdk_pixbuf_get_pixels (pb), dst;	214	guchar src = gdk_pixbuf_get_pixels (pb), dst;
115	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	215	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
116		216
117	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	217	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
118		218
119	dst = gdk_pixbuf_get_pixels (RETVAL);	219	dst = gdk_pixbuf_get_pixels (RETVAL);
120	dstr = gdk_pixbuf_get_rowstride (RETVAL);	220	dstr = gdk_pixbuf_get_rowstride (RETVAL);
121		221
122	for (y = 0; y < h; y++)
123	for (x = 0; x < w; x++)	222	for (x = 0; x < w; x++)
		223	for (y = 0; y < h; y++)
124	for (i = 0; i < bpp; i++)	224	for (i = 0; i < 3; i++)
125	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];
126	}	226	}
127	OUTPUT:	227	OUTPUT:
128	RETVAL	228	RETVAL
129		229
130	GdkPixbuf_noinc *	230	GdkPixbuf_noinc *
131	flop (GdkPixbuf *pb)	231	rotate (GdkPixbuf *pb, int angle)
132	CODE:	232	CODE:
133	{	233	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
134	int w = gdk_pixbuf_get_width (pb);	234	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
135	int h = gdk_pixbuf_get_height (pb);	235	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
136	int bpp = gdk_pixbuf_get_n_channels (pb);	236	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
137	int x, y, i;	237	: angle);
138	guchar src = gdk_pixbuf_get_pixels (pb), dst;	238	OUTPUT:
139	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	239	RETVAL
140		240
141	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;
142		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
143	dst = gdk_pixbuf_get_pixels (RETVAL);	309	data = gdk_pixbuf_get_pixels (RETVAL);
144	dstr = gdk_pixbuf_get_rowstride (RETVAL);	310	rs = gdk_pixbuf_get_rowstride (RETVAL);
145		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)
146	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
147	for (x = 0; x < w; x++)	366	for (x = 0; x < w; x++)
148	for (i = 0; i < bpp; i++)	367	{
149	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.)));
150	}	379	}
151	OUTPUT:
152	RETVAL
153		380
154	#############################################################################	381	#############################################################################
155		382
156	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	383	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
157		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
158	GdkPixbuf_noinc *	427	GdkPixbuf_noinc *
159	p7_to_pb (int w, int h, guchar *src)	428	p7_to_pb (int w, int h, SV *src_sv)
		429	PROTOTYPE: @
160	CODE:	430	CODE:
161	{	431	{
162	int x, y;	432	int x, y;
163	guchar dst, d;	433	guchar dst, d;
164	int dstr;	434	int dstr;
		435	guchar src = (guchar )SvPVbyte_nolen (src_sv);
165		436
166	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	437	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
167	dst = gdk_pixbuf_get_pixels (RETVAL);	438	dst = gdk_pixbuf_get_pixels (RETVAL);
168	dstr = gdk_pixbuf_get_rowstride (RETVAL);	439	dstr = gdk_pixbuf_get_rowstride (RETVAL);
169		440
…		…
178	}	449	}
179	}	450	}
180	OUTPUT:	451	OUTPUT:
181	RETVAL	452	RETVAL
182		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
183	SV *	502	SV *
184	pb_to_p7 (GdkPixbuf *pb)	503	pb_to_hv84 (GdkPixbuf *pb)
185	CODE:	504	CODE:
186	{	505	{
187	int w = gdk_pixbuf_get_width (pb);	506	int w = gdk_pixbuf_get_width (pb);
188	int h = gdk_pixbuf_get_height (pb);	507	int h = gdk_pixbuf_get_height (pb);
189	int x, y;	508	int x, y;
190	guchar *dst;	509	guchar *dst;
191	int bpp = gdk_pixbuf_get_n_channels (pb);	510	int bpp = gdk_pixbuf_get_n_channels (pb);
192	guchar *src = gdk_pixbuf_get_pixels (pb);	511	guchar *src = gdk_pixbuf_get_pixels (pb);
193	int sstr = gdk_pixbuf_get_rowstride (pb);	512	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		513
356	RETVAL = newSV (6 * 8 * 12 / 8);	514	RETVAL = newSV (6 * 8 * 12 / 8);
357	SvPOK_only (RETVAL);	515	SvPOK_only (RETVAL);
358	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	516	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
359		517
360	dst = SvPVX (RETVAL);	518	dst = (guchar *)SvPVX (RETVAL);
361		519
362	/* some primitive error distribution + random dithering */	520	/* some primitive error distribution + random dithering */
363		521
364	for (y = 0; y < h; y++)	522	for (y = 0; y < h; y++)
365	{	523	{
…		…
423	}	581	}
424	}	582	}
425	OUTPUT:	583	OUTPUT:
426	RETVAL	584	RETVAL
427		585
		586	#############################################################################
428		587
		588	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
429		589
		590	SV *
		591	make_histograms (SV *ar)
		592	CODE:
		593	{
		594	int i;
		595	AV av, result;
		596
		597	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		598	croak ("Not an array ref as first argument to make_histogram");
		599
		600	av = (AV *) SvRV (ar);
		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
		633	for (j = 0; j < HISTSIZE; ++j)
		634	hist[j] = (float)tmphist[j] / (len + 1e-30);
		635
		636	av_push (result, histsv);
		637	}
		638
		639	RETVAL = newRV_noinc ((SV *)result);
		640	}
		641	OUTPUT:
		642	RETVAL
		643
		644

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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 1.35 by root, Tue Mar 7 16:45:53 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 1.35 by root, Tue Mar 7 16:45:53 2006 UTC