[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 1.49 by root, Wed May 24 19:22:32 2017 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	#include <assert.h>
		20
		21	#include "perlmulticore.h"
		22
		23	#define IW 80 /* MUST match Schnauzer.pm! */
		24	#define IH 60 /* MUST match Schnauzer.pm! */
11		25
12	#define RAND (seed = (seed + 7141) * 54773 % 134456)	26	#define RAND (seed = (seed + 7141) * 54773 % 134456)
13		27
14	#define LINELENGTH 240	28	#define LINELENGTH 240
15		29
16	#define ELLIPSIS "\xe2\x80\xa6"	30	#define ELLIPSIS "\xe2\x80\xa6"
17		31
18	static guint32 a85_val;	32	typedef char *octet_string;
19	static guint a85_cnt;
20	static guchar a85_buf[LINELENGTH], *a85_ptr;
21		33
22	static void	34	struct jpg_err_mgr
23	a85_init (void)
24	{	35	{
25	a85_cnt = 4;	36	struct jpeg_error_mgr err;
26	a85_ptr = a85_buf;	37	jmp_buf setjmp_buffer;
27	}	38	};
28		39
29	static void	40	static void
30	a85_push (PerlIO *fp, guchar c)	41	cv_error_exit (j_common_ptr cinfo)
31	{	42	{
32	a85_val = a85_val << 8 \| c;	43	cinfo->err->output_message (cinfo);
33		44	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
34	if (!--a85_cnt)
35	{
36	a85_cnt = 4;
37	if (a85_val)
38	{
39	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
40	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
41	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
42	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
43	a85_ptr[0] = (a85_val ) + 33;
44
45	a85_ptr += 5;
46	}
47	else
48	*a85_ptr++ = 'z';
49
50	if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7)
51	{
52	*a85_ptr++ = '\n';
53	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
54	a85_ptr = a85_buf;
55	}
56	}
57
58	}	45	}
59		46
60	static void	47	static void
61	a85_finish (PerlIO *fp)	48	cv_error_output (j_common_ptr cinfo)
62	{	49	{
63	while (a85_cnt != 4)	50	char msg[JMSG_LENGTH_MAX];
64	a85_push (fp, 0);
65		51
66	*a85_ptr++ = '~'; // probably buggy end-marker	52	cinfo->err->format_message (cinfo, msg);
67	*a85_ptr++ = '>'; // probably buggy end-marker
68	*a85_ptr++ = '\n';
69		53
70	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	54	fprintf (stderr, "JPEG decoding error: %s\n", msg);
		55	return;
71	}	56	}
72		57
73	static void	58	static void
74	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,	59	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
75	unsigned int h, unsigned int s, unsigned int *v)	60	unsigned int h, unsigned int s, unsigned int *v)
95		80
96	*h &= 255;	81	*h &= 255;
97	}	82	}
98	}	83	}
99		84
		85	struct feature {
		86	float v1, v2, v3; // mean, square, cube
		87	int n;
		88	};
		89
		90	static void
		91	feature_init (struct feature *f)
		92	{
		93	f->v1 = 0.;
		94	f->v2 = 0.;
		95	f->v3 = 0.;
		96	f->n = 0;
		97	}
		98
		99	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		100	// elmex ist schuld.
		101	static void
		102	feature_update_pass_1 (struct feature *f, unsigned int v)
		103	{
		104	f->v1 += v;
		105	f->n += 1;
		106	}
		107
		108	static void
		109	feature_finish_pass_1 (struct feature *f)
		110	{
		111	if (f->n < 1)
		112	return;
		113
		114	f->v1 /= f->n;
		115	}
		116
		117	static void
		118	feature_update_pass_2 (struct feature *f, unsigned int v)
		119	{
		120	float d = v - f->v1;
		121
		122	f->v2 += d * d;
		123	f->v3 += d * d * d;
		124	}
		125
		126	static void
		127	feature_finish_pass_2 (struct feature *f)
		128	{
		129	if (f->n < 1)
		130	return;
		131
		132	f->v2 /= f->n;
		133	f->v3 /= f->n;
		134
		135	f->v1 /= 255.;
		136	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		137	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		138	}
		139
		140	static guint32 a85_val;
		141	static guint a85_cnt;
		142	static guchar a85_buf[LINELENGTH], *a85_ptr;
		143
		144	static void
		145	a85_init (void)
		146	{
		147	a85_cnt = 4;
		148	a85_ptr = a85_buf;
		149	}
		150
		151	static void
		152	a85_push (PerlIO *fp, guchar c)
		153	{
		154	a85_val = a85_val << 8 \| c;
		155
		156	if (!--a85_cnt)
		157	{
		158	a85_cnt = 4;
		159	if (a85_val)
		160	{
		161	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
		162	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
		163	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
		164	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
		165	a85_ptr[0] = (a85_val ) + 33;
		166
		167	a85_ptr += 5;
		168	}
		169	else
		170	*a85_ptr++ = 'z';
		171
		172	if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7)
		173	{
		174	*a85_ptr++ = '\n';
		175	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
		176	a85_ptr = a85_buf;
		177	}
		178	}
		179
		180	}
		181
		182	static void
		183	a85_finish (PerlIO *fp)
		184	{
		185	while (a85_cnt != 4)
		186	a85_push (fp, 0);
		187
		188	*a85_ptr++ = '~'; // probably buggy end-marker
		189	*a85_ptr++ = '>'; // probably buggy end-marker
		190	*a85_ptr++ = '\n';
		191
		192	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
		193	}
		194
100	/////////////////////////////////////////////////////////////////////////////	195	/////////////////////////////////////////////////////////////////////////////
101		196
102	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	197	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
103		198
104	PROTOTYPES: ENABLE	199	PROTOTYPES: ENABLE
105		200
		201	# missing function in perl. really :)
		202	int
		203	common_prefix_length (a, b)
		204	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		205	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		206	CODE:
		207	RETVAL = 0;
		208
		209	while (a == b && *a)
		210	{
		211	RETVAL += (*a & 0xc0) != 0x80;
		212	a++, b++;
		213	}
		214
		215	OUTPUT:
		216	RETVAL
		217
		218	const char *
		219	magic (octet_string path)
		220	CODE:
		221	{
		222	static magic_t cookie;
		223
		224	if (!cookie)
		225	{
		226	cookie = magic_open (MAGIC_SYMLINK);
		227
		228	if (cookie)
		229	magic_load (cookie, 0);
		230	else
		231	XSRETURN_UNDEF;
		232	}
		233
		234	RETVAL = magic_file (cookie, path);
		235	}
		236	OUTPUT:
		237	RETVAL
		238
		239	const char *
		240	magic_mime (octet_string path)
		241	CODE:
		242	{
		243	static magic_t cookie;
		244
		245	if (!cookie)
		246	{
		247	cookie = magic_open (MAGIC_MIME \| MAGIC_SYMLINK);
		248
		249	if (cookie)
		250	magic_load (cookie, 0);
		251	else
		252	XSRETURN_UNDEF;
		253	}
		254
		255	perlinterp_release ();
		256	RETVAL = magic_file (cookie, path);
		257	perlinterp_acquire ();
		258	}
		259	OUTPUT:
		260	RETVAL
		261
		262	# missing/broken in Gtk2 perl module
		263
		264	void
		265	gdk_window_clear_hints (GdkWindow *window)
		266	CODE:
		267	gdk_window_set_geometry_hints (window, 0, 0);
		268
		269	gboolean
		270	gdk_net_wm_supports (GdkAtom property)
		271	CODE:
		272	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		273	RETVAL = gdk_net_wm_supports (property);
		274	#else
		275	RETVAL = 0;
		276	#endif
		277	OUTPUT:
		278	RETVAL
		279
106	GdkPixbuf_noinc *	280	GdkPixbuf_noinc *
107	transpose (GdkPixbuf *pb)	281	dealpha_expose (GdkPixbuf *pb)
108	CODE:	282	CODE:
		283	perlinterp_release ();
109	{	284	{
110	int w = gdk_pixbuf_get_width (pb);	285	int w = gdk_pixbuf_get_width (pb);
111	int h = gdk_pixbuf_get_height (pb);	286	int h = gdk_pixbuf_get_height (pb);
112	int bpp = gdk_pixbuf_get_n_channels (pb);	287	int bpp = gdk_pixbuf_get_n_channels (pb);
113	int x, y, i;	288	int x, y, i;
114	guchar src = gdk_pixbuf_get_pixels (pb), dst;	289	guchar src = gdk_pixbuf_get_pixels (pb), dst;
115	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	290	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
116		291
117	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	292	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
118		293
119	dst = gdk_pixbuf_get_pixels (RETVAL);	294	dst = gdk_pixbuf_get_pixels (RETVAL);
120	dstr = gdk_pixbuf_get_rowstride (RETVAL);	295	dstr = gdk_pixbuf_get_rowstride (RETVAL);
121		296
122	for (y = 0; y < h; y++)
123	for (x = 0; x < w; x++)	297	for (x = 0; x < w; x++)
		298	for (y = 0; y < h; y++)
124	for (i = 0; i < bpp; i++)	299	for (i = 0; i < 3; i++)
125	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	300	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
126	}	301	}
		302	perlinterp_acquire ();
127	OUTPUT:	303	OUTPUT:
128	RETVAL	304	RETVAL
129		305
130	GdkPixbuf_noinc *	306	GdkPixbuf_noinc *
131	flop (GdkPixbuf *pb)	307	rotate (GdkPixbuf *pb, int angle)
132	CODE:	308	CODE:
133	{	309	perlinterp_release ();
134	int w = gdk_pixbuf_get_width (pb);	310	if (angle < 0)
135	int h = gdk_pixbuf_get_height (pb);	311	angle += 360;
136	int bpp = gdk_pixbuf_get_n_channels (pb);	312	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
137	int x, y, i;	313	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
138	guchar src = gdk_pixbuf_get_pixels (pb), dst;	314	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
139	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	315	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
140		316	: angle);
141	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	317	perlinterp_acquire ();
142
143	dst = gdk_pixbuf_get_pixels (RETVAL);
144	dstr = gdk_pixbuf_get_rowstride (RETVAL);
145
146	for (y = 0; y < h; y++)
147	for (x = 0; x < w; x++)
148	for (i = 0; i < bpp; i++)
149	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
150	}
151	OUTPUT:	318	OUTPUT:
152	RETVAL	319	RETVAL
153		320
		321	GdkPixbuf_noinc *
		322	load_jpeg (SV *path, int thumbnail = 0, int iw = 0, int ih = 0)
		323	CODE:
		324	{
		325	struct jpeg_decompress_struct cinfo;
		326	struct jpg_err_mgr jerr;
		327	guchar *data;
		328	int rs;
		329	FILE *fp;
		330	volatile GdkPixbuf *pb = 0;
		331
		332	RETVAL = 0;
		333
		334	fp = fopen (SvPVbyte_nolen (path), "rb");
		335
		336	if (!fp)
		337	XSRETURN_UNDEF;
		338
		339	perlinterp_release ();
		340
		341	cinfo.err = jpeg_std_error (&jerr.err);
		342
		343	jerr.err.error_exit = cv_error_exit;
		344	jerr.err.output_message = cv_error_output;
		345
		346	if ((rs = setjmp (jerr.setjmp_buffer)))
		347	{
		348	fclose (fp);
		349	jpeg_destroy_decompress (&cinfo);
		350
		351	if (pb)
		352	g_object_unref ((gpointer)pb);
		353
		354	perlinterp_acquire ();
		355	XSRETURN_UNDEF;
		356	}
		357
		358	jpeg_create_decompress (&cinfo);
		359
		360	jpeg_stdio_src (&cinfo, fp);
		361	jpeg_read_header (&cinfo, TRUE);
		362
		363	cinfo.dct_method = JDCT_DEFAULT;
		364	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		365	cinfo.do_block_smoothing = FALSE;
		366	cinfo.out_color_space = JCS_RGB;
		367	cinfo.quantize_colors = FALSE;
		368
		369	cinfo.scale_num = 1;
		370	cinfo.scale_denom = 1;
		371
		372	jpeg_calc_output_dimensions (&cinfo);
		373
		374	if (thumbnail)
		375	{
		376	cinfo.dct_method = JDCT_FASTEST;
		377	cinfo.do_fancy_upsampling = FALSE;
		378
		379	while (cinfo.scale_denom < 8
		380	&& cinfo.output_width >= iw*4
		381	&& cinfo.output_height >= ih*4)
		382	{
		383	cinfo.scale_denom <<= 1;
		384	jpeg_calc_output_dimensions (&cinfo);
		385	}
		386	}
		387
		388	if (cinfo.output_components != 3)
		389	longjmp (jerr.setjmp_buffer, 3);
		390
		391	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		392	{
		393	cinfo.out_color_space = JCS_CMYK;
		394	cinfo.output_components = 4;
		395	}
		396
		397	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
		398	if (!RETVAL)
		399	longjmp (jerr.setjmp_buffer, 2);
		400
		401	data = gdk_pixbuf_get_pixels (RETVAL);
		402	rs = gdk_pixbuf_get_rowstride (RETVAL);
		403
		404	jpeg_start_decompress (&cinfo);
		405
		406	while (cinfo.output_scanline < cinfo.output_height)
		407	{
		408	int remaining = cinfo.output_height - cinfo.output_scanline;
		409	JSAMPROW rp[4];
		410
		411	rp [0] = data + cinfo.output_scanline * rs;
		412	rp [1] = (guchar *)rp [0] + rs;
		413	rp [2] = (guchar *)rp [1] + rs;
		414	rp [3] = (guchar *)rp [2] + rs;
		415
		416	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		417	}
		418
		419	if (cinfo.out_color_space == JCS_CMYK)
		420	{
		421	guchar end = data + cinfo.output_height rs;
		422
		423	while (data < end)
		424	{
		425	U32 c = data [0];
		426	U32 m = data [1];
		427	U32 y = data [2];
		428	U32 k = data [3];
		429
		430	if (0)
		431	if (cinfo.Adobe_transform == 2)
		432	{
		433	c ^= 0xff;
		434	m ^= 0xff;
		435	y ^= 0xff;
		436	k ^= 0xff;
		437	}
		438
		439	data [0] = (c * k + 0x80) / 0xff;
		440	data [1] = (m * k + 0x80) / 0xff;
		441	data [2] = (y * k + 0x80) / 0xff;
		442	data [3] = 0xff;
		443
		444	data += 4;
		445	}
		446	}
		447
		448	jpeg_finish_decompress (&cinfo);
		449	fclose (fp);
		450	jpeg_destroy_decompress (&cinfo);
		451	perlinterp_acquire ();
		452	}
		453	OUTPUT:
		454	RETVAL
		455
		456	void
		457	compare (GdkPixbuf a, GdkPixbuf b)
		458	PPCODE:
		459	perlinterp_release ();
		460	{
		461	int w = gdk_pixbuf_get_width (a);
		462	int h = gdk_pixbuf_get_height (a);
		463
		464	int sa = gdk_pixbuf_get_rowstride (a);
		465	int sb = gdk_pixbuf_get_rowstride (b);
		466
		467	guchar *pa = gdk_pixbuf_get_pixels (a);
		468	guchar *pb = gdk_pixbuf_get_pixels (b);
		469
		470	int x, y;
		471
		472	assert (w == gdk_pixbuf_get_width (b));
		473	assert (h == gdk_pixbuf_get_height (b));
		474
		475	assert (gdk_pixbuf_get_n_channels (a) == 3);
		476	assert (gdk_pixbuf_get_n_channels (b) == 3);
		477
		478	double diff = 0.;
		479	int peak = 0;
		480
		481	if (w && h)
		482	for (y = 0; y < h; y++)
		483	{
		484	guchar pa_ = pa + y sa;
		485	guchar pb_ = pb + y sb;
		486
		487	for (x = 0; x < w; x++)
		488	{
		489	int d;
		490
		491	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		492	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		493	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		494	}
		495	}
		496
		497	perlinterp_acquire ();
		498
		499	EXTEND (SP, 2);
		500	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		501	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		502	}
		503
154	#############################################################################	504	#############################################################################
155		505
156	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	506	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
157		507
		508	# currently only works for filenames (octet strings)
		509
		510	SV *
		511	foldcase (SV *pathsv)
		512	PROTOTYPE: $
		513	CODE:
		514	{
		515	STRLEN plen;
		516	U8 path = (U8 )SvPV (pathsv, plen);
		517	U8 *pend = path + plen;
		518	U8 dst [plen * 6 * 3], *dstp = dst;
		519
		520	while (path < pend)
		521	{
		522	U8 ch = *path;
		523
		524	if (ch >= 'a' && ch <= 'z')
		525	dstp++ = path++;
		526	else if (ch >= 'A' && ch <= 'Z')
		527	dstp++ = path++ + ('a' - 'A');
		528	else if (ch >= '0' && ch <= '9')
		529	{
		530	STRLEN el, nl = 0;
		531	while (path >= '0' && path <= '9' && path < pend)
		532	path++, nl++;
		533
		534	for (el = nl; el < 6; el++)
		535	*dstp++ = '0';
		536
		537	memcpy (dstp, path - nl, nl);
		538	dstp += nl;
		539	}
		540	else
		541	dstp++ = path++;
		542	#if 0
		543	else
		544	{
		545	STRLEN cl;
		546	to_utf8_fold (path, dstp, &cl);
		547	dstp += cl;
		548	path += is_utf8_char (path);
		549	}
		550	#endif
		551	}
		552
		553	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		554	}
		555	OUTPUT:
		556	RETVAL
		557
158	GdkPixbuf_noinc *	558	GdkPixbuf_noinc *
159	p7_to_pb (int w, int h, guchar *src)	559	p7_to_pb (int w, int h, SV *src_sv)
		560	PROTOTYPE: @
160	CODE:	561	CODE:
161	{	562	{
162	int x, y;	563	int x, y;
163	guchar dst, d;	564	guchar dst, d;
164	int dstr;	565	int dstr;
		566	guchar src = (guchar )SvPVbyte_nolen (src_sv);
165		567
166	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	568	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
167	dst = gdk_pixbuf_get_pixels (RETVAL);	569	dst = gdk_pixbuf_get_pixels (RETVAL);
168	dstr = gdk_pixbuf_get_rowstride (RETVAL);	570	dstr = gdk_pixbuf_get_rowstride (RETVAL);
169		571
…		…
178	}	580	}
179	}	581	}
180	OUTPUT:	582	OUTPUT:
181	RETVAL	583	RETVAL
182		584
		585	#############################################################################
		586
		587	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		588
		589	void
		590	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		591	CODE:
		592	{
		593	int w = gdk_pixbuf_get_width (pb);
		594	int h = gdk_pixbuf_get_height (pb);
		595	int x, y, i;
		596	guchar *dst;
		597	int bpp = gdk_pixbuf_get_n_channels (pb);
		598	guchar *src = gdk_pixbuf_get_pixels (pb);
		599	int sstr = gdk_pixbuf_get_rowstride (pb);
		600
		601	a85_init ();
		602
		603	for (y = 0; y < h; y++)
		604	for (x = 0; x < w; x++)
		605	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		606	a85_push (fp, src [x * bpp + y * sstr + i]);
		607
		608	a85_finish (fp);
		609	}
		610
		611	void
		612	dump_binary (PerlIO fp, GdkPixbuf pb)
		613	CODE:
		614	{
		615	int w = gdk_pixbuf_get_width (pb);
		616	int h = gdk_pixbuf_get_height (pb);
		617	int x, y, i;
		618	guchar *dst;
		619	int bpp = gdk_pixbuf_get_n_channels (pb);
		620	guchar *src = gdk_pixbuf_get_pixels (pb);
		621	int sstr = gdk_pixbuf_get_rowstride (pb);
		622
		623	for (y = 0; y < h; y++)
		624	for (x = 0; x < w; x++)
		625	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		626	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		627	}
		628
		629	#############################################################################
		630
		631	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		632
183	SV *	633	SV *
184	pb_to_p7 (GdkPixbuf *pb)	634	pb_to_hv84 (GdkPixbuf *pb)
185	CODE:	635	CODE:
186	{	636	{
187	int w = gdk_pixbuf_get_width (pb);	637	int w = gdk_pixbuf_get_width (pb);
188	int h = gdk_pixbuf_get_height (pb);	638	int h = gdk_pixbuf_get_height (pb);
189	int x, y;	639	int x, y;
190	guchar *dst;	640	guchar *dst;
191	int bpp = gdk_pixbuf_get_n_channels (pb);	641	int bpp = gdk_pixbuf_get_n_channels (pb);
192	guchar *src = gdk_pixbuf_get_pixels (pb);	642	guchar *src = gdk_pixbuf_get_pixels (pb);
193	int sstr = gdk_pixbuf_get_rowstride (pb);	643	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		644
356	RETVAL = newSV (6 * 8 * 12 / 8);	645	RETVAL = newSV (6 * 8 * 12 / 8);
357	SvPOK_only (RETVAL);	646	SvPOK_only (RETVAL);
358	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	647	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
359		648
360	dst = SvPVX (RETVAL);	649	dst = (guchar *)SvPVX (RETVAL);
361		650
362	/* some primitive error distribution + random dithering */	651	/* some primitive error distribution + random dithering */
363		652
364	for (y = 0; y < h; y++)	653	for (y = 0; y < h; y++)
365	{	654	{
…		…
423	}	712	}
424	}	713	}
425	OUTPUT:	714	OUTPUT:
426	RETVAL	715	RETVAL
427		716
		717	#############################################################################
428		718
		719	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
429		720
		721	SV *
		722	extract_features (SV *ar)
		723	CODE:
		724	{
		725	int i;
		726	AV av, result;
		727
		728	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		729	croak ("Not an array ref as first argument to extract_features");
		730
		731	av = (AV *) SvRV (ar);
		732	result = newAV ();
		733
		734	for (i = 0; i <= av_len (av); ++i)
		735	{
		736	SV sv = av_fetch (av, i, 1);
		737	SV histsv = newSV (9 sizeof (float) + 1);
		738
		739	SvPOK_on (histsv);
		740	SvCUR_set (histsv, 9 * sizeof (float));
		741	float hist = (float )SvPVX (histsv);
		742
		743	struct feature f_h, f_s, f_v;
		744	feature_init (&f_h);
		745	feature_init (&f_s);
		746	feature_init (&f_v);
		747
		748	{
		749	STRLEN len;
		750	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		751	while (len >= 3)
		752	{
		753	unsigned int r, g, b, h, s, v;
		754	r = buf++; g = buf++; b = *buf++;
		755	rgb_to_hsv (r, g, b, &h, &s, &v);
		756
		757	feature_update_pass_1 (&f_h, h);
		758	feature_update_pass_1 (&f_s, s);
		759	feature_update_pass_1 (&f_v, v);
		760
		761	len -= 3;
		762	}
		763
		764	feature_finish_pass_1 (&f_h);
		765	feature_finish_pass_1 (&f_s);
		766	feature_finish_pass_1 (&f_v);
		767	}
		768
		769	{
		770	STRLEN len;
		771	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		772	while (len >= 3)
		773	{
		774	unsigned int r, g, b, h, s, v;
		775	r = buf++; g = buf++; b = *buf++;
		776	rgb_to_hsv (r, g, b, &h, &s, &v);
		777
		778	feature_update_pass_2 (&f_h, h);
		779	feature_update_pass_2 (&f_s, s);
		780	feature_update_pass_2 (&f_v, v);
		781
		782	len -= 3;
		783	}
		784
		785	feature_finish_pass_2 (&f_h);
		786	feature_finish_pass_2 (&f_s);
		787	feature_finish_pass_2 (&f_v);
		788	}
		789
		790	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		791	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		792	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
		793
		794	av_push (result, histsv);
		795	}
		796
		797	RETVAL = newRV_noinc ((SV *)result);
		798	}
		799	OUTPUT:
		800	RETVAL
		801

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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 1.49 by root, Wed May 24 19:22:32 2017 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 1.49 by root, Wed May 24 19:22:32 2017 UTC