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

Comparing CV/CV.xs (file contents):
Revision 1.3 by root, Wed Nov 5 00:22:22 2003 UTC vs.
Revision 1.31 by root, Wed Feb 15 08:08:37 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
		18	#define IW 80 /* MUST match Schnauer.pm! */
		19	#define IH 60 /* MUST match Schnauer.pm! */
		20
		21	#define RAND (seed = (seed + 7141) * 54773 % 134456)
		22
		23	#define LINELENGTH 240
		24
		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	}
		71
		72	static guint32 a85_val;
		73	static guint a85_cnt;
		74	static guchar a85_buf[LINELENGTH], *a85_ptr;
		75
		76	static void
		77	a85_init (void)
		78	{
		79	a85_cnt = 4;
		80	a85_ptr = a85_buf;
		81	}
		82
		83	static void
		84	a85_push (PerlIO *fp, guchar c)
		85	{
		86	a85_val = a85_val << 8 \| c;
		87
		88	if (!--a85_cnt)
		89	{
		90	a85_cnt = 4;
		91	if (a85_val)
		92	{
		93	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
		94	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
		95	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
		96	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
		97	a85_ptr[0] = (a85_val ) + 33;
		98
		99	a85_ptr += 5;
		100	}
		101	else
		102	*a85_ptr++ = 'z';
		103
		104	if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7)
		105	{
		106	*a85_ptr++ = '\n';
		107	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
		108	a85_ptr = a85_buf;
		109	}
		110	}
		111
		112	}
		113
		114	static void
		115	a85_finish (PerlIO *fp)
		116	{
		117	while (a85_cnt != 4)
		118	a85_push (fp, 0);
		119
		120	*a85_ptr++ = '~'; // probably buggy end-marker
		121	*a85_ptr++ = '>'; // probably buggy end-marker
		122	*a85_ptr++ = '\n';
		123
		124	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
		125	}
		126
		127	/////////////////////////////////////////////////////////////////////////////
		128
10	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow	129	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
11		130
12	PROTOTYPES: ENABLE	131	PROTOTYPES: ENABLE
13		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_MIME);
		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	# missing in Gtk2 perl module
		172
		173	gboolean
		174	gdk_net_wm_supports (GdkAtom property)
		175	CODE:
		176	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		177	RETVAL = gdk_net_wm_supports (property);
		178	#else
		179	RETVAL = 0;
		180	#endif
		181	OUTPUT:
		182	RETVAL
		183
14	GdkPixbuf_noinc *	184	GdkPixbuf_noinc *
15	transpose (GdkPixbuf *pb)	185	dealpha_expose (GdkPixbuf *pb)
16	CODE:	186	CODE:
17	{	187	{
18	int w = gdk_pixbuf_get_width (pb);	188	int w = gdk_pixbuf_get_width (pb);
19	int h = gdk_pixbuf_get_height (pb);	189	int h = gdk_pixbuf_get_height (pb);
20	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	190	int bpp = gdk_pixbuf_get_n_channels (pb);
21	int x, y, i;	191	int x, y, i;
22	guchar src = gdk_pixbuf_get_pixels (pb), dst;	192	guchar src = gdk_pixbuf_get_pixels (pb), dst;
23	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	193	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
24		194
25	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	195	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
26		196
27	dst = gdk_pixbuf_get_pixels (RETVAL);	197	dst = gdk_pixbuf_get_pixels (RETVAL);
28	dstr = gdk_pixbuf_get_rowstride (RETVAL);	198	dstr = gdk_pixbuf_get_rowstride (RETVAL);
29		199
30	for (y = 0; y < h; y++)
31	for (x = 0; x < w; x++)	200	for (x = 0; x < w; x++)
		201	for (y = 0; y < h; y++)
32	for (i = 0; i < bpp; i++)	202	for (i = 0; i < 3; i++)
33	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	203	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
34	}	204	}
35	OUTPUT:	205	OUTPUT:
36	RETVAL	206	RETVAL
37		207
38	GdkPixbuf_noinc *	208	GdkPixbuf_noinc *
39	flop (GdkPixbuf *pb)	209	rotate (GdkPixbuf *pb, int angle)
40	CODE:	210	CODE:
41	{	211	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
42	int w = gdk_pixbuf_get_width (pb);	212	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
43	int h = gdk_pixbuf_get_height (pb);	213	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
44	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	214	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
45	int x, y, i;	215	: angle);
46	guchar src = gdk_pixbuf_get_pixels (pb), dst;	216	OUTPUT:
47	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	217	RETVAL
48		218
49	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	219	GdkPixbuf_noinc *
		220	load_jpeg (SV *path, int thumbnail=0)
		221	CODE:
		222	{
		223	struct jpeg_decompress_struct cinfo;
		224	struct jpg_err_mgr jerr;
		225	guchar *data;
		226	int rs;
		227	FILE *fp;
		228	volatile GdkPixbuf *pb = 0;
50		229
		230	RETVAL = 0;
		231
		232	fp = fopen (SvPVbyte_nolen (path), "rb");
		233
		234	if (!fp)
		235	XSRETURN_UNDEF;
		236
		237	cinfo.err = jpeg_std_error (&jerr.err);
		238
		239	jerr.err.error_exit = cv_error_exit;
		240	jerr.err.output_message = cv_error_output;
		241
		242	if ((rs = setjmp (jerr.setjmp_buffer)))
		243	{
		244	fclose (fp);
		245	jpeg_destroy_decompress (&cinfo);
		246
		247	if (pb)
		248	g_object_unref ((gpointer)pb);
		249
		250	XSRETURN_UNDEF;
		251	}
		252
		253	jpeg_create_decompress (&cinfo);
		254
		255	jpeg_stdio_src (&cinfo, fp);
		256	jpeg_read_header (&cinfo, TRUE);
		257
		258	cinfo.dct_method = JDCT_DEFAULT;
		259	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		260	cinfo.do_block_smoothing = FALSE;
		261	cinfo.out_color_space = JCS_RGB;
		262	cinfo.quantize_colors = FALSE;
		263
		264	cinfo.scale_num = 1;
		265	cinfo.scale_denom = 1;
		266
		267	jpeg_calc_output_dimensions (&cinfo);
		268
		269	if (thumbnail)
		270	{
		271	cinfo.dct_method = JDCT_FASTEST;
		272	cinfo.do_fancy_upsampling = FALSE;
		273
		274	while (cinfo.scale_denom < 8
		275	&& cinfo.output_width >= IW*4
		276	&& cinfo.output_height >= IH*4)
		277	{
		278	cinfo.scale_denom <<= 1;
		279	jpeg_calc_output_dimensions (&cinfo);
		280	}
		281	}
		282
		283	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
		284	if (!RETVAL)
		285	longjmp (jerr.setjmp_buffer, 2);
		286
51	dst = gdk_pixbuf_get_pixels (RETVAL);	287	data = gdk_pixbuf_get_pixels (RETVAL);
52	dstr = gdk_pixbuf_get_rowstride (RETVAL);	288	rs = gdk_pixbuf_get_rowstride (RETVAL);
53		289
54	for (y = 0; y < h; y++)	290	if (cinfo.output_components != 3)
55	for (x = 0; x < w; x++)	291	longjmp (jerr.setjmp_buffer, 3);
56	for (i = 0; i < bpp; i++)	292
57	dst[(w - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];	293	jpeg_start_decompress (&cinfo);
		294
		295	while (cinfo.output_scanline < cinfo.output_height)
		296	{
		297	int remaining = cinfo.output_height - cinfo.output_scanline;
		298	JSAMPROW rp[4];
		299
		300	rp [0] = data + cinfo.output_scanline * rs;
		301	rp [1] = (guchar *)rp [0] + rs;
		302	rp [2] = (guchar *)rp [1] + rs;
		303	rp [3] = (guchar *)rp [2] + rs;
		304
		305	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		306	}
		307
		308	jpeg_finish_decompress (&cinfo);
		309	fclose (fp);
		310	jpeg_destroy_decompress (&cinfo);
58	}	311	}
59	OUTPUT:	312	OUTPUT:
60	RETVAL	313	RETVAL
		314
		315	#############################################################################
61		316
62	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	317	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
63		318
		319	SV *
		320	foldcase (SV *pathsv)
		321	PROTOTYPE: $
		322	CODE:
		323	{
		324	STRLEN plen;
		325	U8 path = (U8 )SvPVutf8 (pathsv, plen);
		326	U8 *pend = path + plen;
		327	U8 dst [plen * 6 * 3], *dstp = dst;
		328
		329	while (path < pend)
		330	{
		331	U8 ch = *path;
		332
		333	if (ch >= 'a' && ch <= 'z')
		334	dstp++ = path++;
		335	else if (ch >= '0' && ch <= '9')
		336	{
		337	STRLEN el, nl = 0;
		338	while (path >= '0' && path <= '9' && path < pend)
		339	path++, nl++;
		340
		341	for (el = nl; el < 6; el++)
		342	*dstp++ = '0';
		343
		344	memcpy (dstp, path - nl, nl);
		345	dstp += nl;
		346	}
		347	else
		348	{
		349	STRLEN cl;
		350	to_utf8_fold (path, dstp, &cl);
		351	dstp += cl;
		352	path += is_utf8_char (path);
		353	}
		354	}
		355
		356	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		357	}
		358	OUTPUT:
		359	RETVAL
		360
64	GdkPixbuf_noinc *	361	GdkPixbuf_noinc *
65	p7_to_pb (int w, int h, guchar *src)	362	p7_to_pb (int w, int h, SV *src_sv)
		363	PROTOTYPE: @
66	CODE:	364	CODE:
67	{	365	{
68	int x, y;	366	int x, y;
69	guchar dst, d;	367	guchar dst, d;
70	int dstr;	368	int dstr;
		369	guchar src = (guchar )SvPVbyte_nolen (src_sv);
71		370
72	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	371	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
73	dst = gdk_pixbuf_get_pixels (RETVAL);	372	dst = gdk_pixbuf_get_pixels (RETVAL);
74	dstr = gdk_pixbuf_get_rowstride (RETVAL);	373	dstr = gdk_pixbuf_get_rowstride (RETVAL);
75		374
84	}	383	}
85	}	384	}
86	OUTPUT:	385	OUTPUT:
87	RETVAL	386	RETVAL
88		387
		388	#############################################################################
		389
		390	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		391
		392	void
		393	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		394	CODE:
		395	{
		396	int w = gdk_pixbuf_get_width (pb);
		397	int h = gdk_pixbuf_get_height (pb);
		398	int x, y, i;
		399	guchar *dst;
		400	int bpp = gdk_pixbuf_get_n_channels (pb);
		401	guchar *src = gdk_pixbuf_get_pixels (pb);
		402	int sstr = gdk_pixbuf_get_rowstride (pb);
		403
		404	a85_init ();
		405
		406	for (y = 0; y < h; y++)
		407	for (x = 0; x < w; x++)
		408	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		409	a85_push (fp, src [x * bpp + y * sstr + i]);
		410
		411	a85_finish (fp);
		412	}
		413
		414	void
		415	dump_binary (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	for (y = 0; y < h; y++)
		427	for (x = 0; x < w; x++)
		428	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		429	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		430	}
		431
		432	#############################################################################
		433
		434	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		435
89	SV *	436	SV *
90	pb_to_p7 (GdkPixbuf *pb)	437	pb_to_hv84 (GdkPixbuf *pb)
91	CODE:	438	CODE:
92	{	439	{
93	int w = gdk_pixbuf_get_width (pb);	440	int w = gdk_pixbuf_get_width (pb);
94	int h = gdk_pixbuf_get_height (pb);	441	int h = gdk_pixbuf_get_height (pb);
95	int x, y;	442	int x, y;
96	guchar *dst;	443	guchar *dst;
97	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	444	int bpp = gdk_pixbuf_get_n_channels (pb);
98	guchar *src = gdk_pixbuf_get_pixels (pb);	445	guchar *src = gdk_pixbuf_get_pixels (pb);
99	int sstr = gdk_pixbuf_get_rowstride (pb);	446	int sstr = gdk_pixbuf_get_rowstride (pb);
100		447
101	RETVAL = newSV (w * h);	448	RETVAL = newSV (6 * 8 * 12 / 8);
102	SvPOK_only (RETVAL);	449	SvPOK_only (RETVAL);
103	SvCUR_set (RETVAL, w * h);	450	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
104		451
105	dst = SvPVX (RETVAL);	452	dst = (guchar *)SvPVX (RETVAL);
		453
		454	/* some primitive error distribution + random dithering */
106		455
107	for (y = 0; y < h; y++)	456	for (y = 0; y < h; y++)
108	{	457	{
109	/* use a very primitive form of error distribution. */	458	guchar p = src + y sstr;
110	int er = 0, eg = 0, eb = 0;
111		459
112	for (x = 0; x < w; x++)	460	for (x = 0; x < w; x += 2)
113	{	461	{
114	int r, g, b;	462	unsigned int r, g, b, h, s, v, H, V1, V2;
115	guchar p = src + x bpp + y * sstr;
116		463
117	r = ((p[0] + er) * 7 + 128) / 255;	464	if (bpp == 3)
118	g = ((p[1] + eg) * 7 + 128) / 255;	465	r = p++, g = p++, b = *p++;
119	b = ((p[2] + eb) * 3 + 128) / 255;	466	else if (bpp == 1)
		467	r = g = b = *p++;
		468	else
		469	abort ();
120		470
121	r = r > 7 ? 7 : r < 0 ? 0 : r;	471	rgb_to_hsv (r, g, b, &h, &s, &v);
122	g = g > 7 ? 7 : g < 0 ? 0 : g;
123	b = b > 3 ? 3 : b < 0 ? 0 : b;
124		472
125	er += p[0] - (r * 255 + 4) / 7;	473	H = (h * 15 / 255) << 4;
126	eg += p[1] - (g * 255 + 4) / 7;	474	V1 = v;
127	eb += p[2] - (b * 255 + 2) / 3;
128		475
129	*dst++ = r << 5 \| g << 2 \| b;	476	if (bpp == 3)
		477	r = p++, g = p++, b = *p++;
		478	else if (bpp == 1)
		479	r = g = b = *p++;
		480	else
		481	abort ();
		482
		483	rgb_to_hsv (r, g, b, &h, &s, &v);
		484
		485	H \|= h * 15 / 255;
		486	V2 = v;
		487
		488	*dst++ = H;
		489	*dst++ = V1;
		490	*dst++ = V2;
130	}	491	}
131	}	492	}
132	}	493	}
133	OUTPUT:	494	OUTPUT:
134	RETVAL	495	RETVAL
135		496
		497	SV *
		498	hv84_to_av (unsigned char *hv84)
		499	CODE:
		500	{
		501	int i = 72 / 3;
		502	AV *av = newAV ();
136		503
		504	RETVAL = (SV )newRV_noinc ((SV )av);
		505	while (i--)
		506	{
		507	int h = *hv84++;
		508	int v1 = *hv84++;
		509	int v2 = *hv84++;
137		510
		511	av_push (av, newSViv (v1));
		512	av_push (av, newSViv ((h >> 4) * 255 / 15));
		513	av_push (av, newSViv (v2));
		514	av_push (av, newSViv ((h & 15) * 255 / 15));
		515	}
		516	}
		517	OUTPUT:
		518	RETVAL
		519
		520	#############################################################################
		521
		522	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
		523
		524	SV *
		525	make_histograms (SV *ar)
		526	CODE:
		527	{
		528	int i;
		529	AV av, result;
		530
		531	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		532	croak ("Not an array ref as first argument to make_histogram");
		533
		534	av = (AV *) SvRV (ar);
		535	result = newAV ();
		536
		537	for (i = 0; i <= av_len (av); ++i)
		538	{
		539	const int HISTSIZE = 64;
		540
		541	int j;
		542	SV sv = av_fetch (av, i, 1);
		543	STRLEN len;
		544	char *buf = SvPVbyte (sv, len);
		545
		546	int tmphist[HISTSIZE];
		547	float *hist;
		548
		549	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
		550	SvPOK_on (histsv);
		551	SvCUR_set (histsv, HISTSIZE * sizeof (float));
		552	hist = (float *)SvPVX (histsv);
		553
		554	Zero (tmphist, sizeof (tmphist), char);
		555
		556	for (j = len; j--; )
		557	{
		558	unsigned int idx
		559	= ((*buf & 0xc0) >> 2)
		560	\| ((*buf & 0x18) >> 1)
		561	\| (*buf & 0x03);
		562
		563	++tmphist[idx];
		564	++buf;
		565	}
		566
		567	for (j = 0; j < HISTSIZE; ++j)
		568	hist[j] = (float)tmphist[j] / (len + 1e-30);
		569
		570	av_push (result, histsv);
		571	}
		572
		573	RETVAL = newRV_noinc ((SV *)result);
		574	}
		575	OUTPUT:
		576	RETVAL
		577
		578

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Comparing CV/CV.xs (file contents): Revision 1.3 by root, Wed Nov 5 00:22:22 2003 UTC vs. Revision 1.31 by root, Wed Feb 15 08:08:37 2006 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.3 by root, Wed Nov 5 00:22:22 2003 UTC vs.
Revision 1.31 by root, Wed Feb 15 08:08:37 2006 UTC