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

Comparing CV/CV.xs (file contents):
Revision 1.6 by root, Wed Nov 12 00:59:01 2003 UTC vs.
Revision 1.22 by root, Sun Aug 14 02:25:44 2005 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 <jpeglib.h>
5	#include <gdk-pixbuf/gdk-pixbuf.h>	9	#include <gdk-pixbuf/gdk-pixbuf.h>
6		10
7	#include <gperl.h>	11	#include <gperl.h>
8	#include <gtk2perl.h>	12	#include <gtk2perl.h>
9		13
10	#define IW 80	14	#define IW 80 /* MUST match Schnauer.pm! */
		15	#define IH 60 /* MUST match Schnauer.pm! */
11		16
12	#define RAND (seed = (seed + 7141) * 54773 % 134456)	17	#define RAND (seed = (seed + 7141) * 54773 % 134456)
13		18
		19	#define LINELENGTH 240
		20
14	#define ELLIPSIS "\xe2\x80\xa6"	21	#define ELLIPSIS "\xe2\x80\xa6"
		22
		23	struct jpg_err_mgr
		24	{
		25	struct jpeg_error_mgr err;
		26	jmp_buf setjmp_buffer;
		27	};
		28
		29	static void
		30	cv_error_exit (j_common_ptr cinfo)
		31	{
		32	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
		33	}
		34
		35	static void
		36	cv_error_output (j_common_ptr cinfo)
		37	{
		38	return;
		39	}
		40
		41	static void
		42	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
		43	unsigned int h, unsigned int s, unsigned int *v)
		44	{
		45	unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
		46	unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
		47	unsigned int delta = mx - mn;
		48
		49	*v = mx;
		50
		51	s = mx ? delta 255 / mx : 0;
		52
		53	if (delta == 0)
		54	*h = 0;
		55	else
		56	{
		57	if (r == mx)
		58	h = ((int)g - (int)b) 255 / (int)(delta * 3);
		59	else if (g == mx)
		60	h = ((int)b - (int)r) 255 / (int)(delta * 3) + 52;
		61	else if (b == mx)
		62	h = ((int)r - (int)g) 255 / (int)(delta * 3) + 103;
		63
		64	*h &= 255;
		65	}
		66	}
15		67
16	static guint32 a85_val;	68	static guint32 a85_val;
17	static guint a85_cnt;	69	static guint a85_cnt;
18	static guchar a85_buf[80], *a85_ptr;	70	static guchar a85_buf[LINELENGTH], *a85_ptr;
19		71
20	static void	72	static void
21	a85_init (void)	73	a85_init (void)
22	{	74	{
23	a85_cnt = 4;	75	a85_cnt = 4;
53	}	105	}
54	}	106	}
55		107
56	}	108	}
57		109
		110	static void
58	a85_finish (PerlIO *fp)	111	a85_finish (PerlIO *fp)
59	{	112	{
60	while (a85_cnt != 4)	113	while (a85_cnt != 4)
61	a85_push (fp, 0);	114	a85_push (fp, 0);
62		115
…		…
67	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	120	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
68	}	121	}
69		122
70	/////////////////////////////////////////////////////////////////////////////	123	/////////////////////////////////////////////////////////////////////////////
71		124
72	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow	125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
73		126
74	PROTOTYPES: ENABLE	127	PROTOTYPES: ENABLE
		128
		129	# missing in Gtk2 perl module
		130
		131	gboolean
		132	gdk_net_wm_supports (GdkAtom property)
		133	CODE:
		134	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		135	RETVAL = gdk_net_wm_supports (property);
		136	#else
		137	RETVAL = 0;
		138	#endif
		139	OUTPUT:
		140	RETVAL
75		141
76	GdkPixbuf_noinc *	142	GdkPixbuf_noinc *
77	transpose (GdkPixbuf *pb)	143	transpose (GdkPixbuf *pb)
78	CODE:	144	CODE:
79	{	145	{
80	int w = gdk_pixbuf_get_width (pb);	146	int w = gdk_pixbuf_get_width (pb);
81	int h = gdk_pixbuf_get_height (pb);	147	int h = gdk_pixbuf_get_height (pb);
82	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	148	int bpp = gdk_pixbuf_get_n_channels (pb);
83	int x, y, i;	149	int x, y, i;
84	guchar src = gdk_pixbuf_get_pixels (pb), dst;	150	guchar src = gdk_pixbuf_get_pixels (pb), dst;
85	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	151	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
86		152
87	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	153	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);
…		…
101	flop (GdkPixbuf *pb)	167	flop (GdkPixbuf *pb)
102	CODE:	168	CODE:
103	{	169	{
104	int w = gdk_pixbuf_get_width (pb);	170	int w = gdk_pixbuf_get_width (pb);
105	int h = gdk_pixbuf_get_height (pb);	171	int h = gdk_pixbuf_get_height (pb);
106	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	172	int bpp = gdk_pixbuf_get_n_channels (pb);
107	int x, y, i;	173	int x, y, i;
108	guchar src = gdk_pixbuf_get_pixels (pb), dst;	174	guchar src = gdk_pixbuf_get_pixels (pb), dst;
109	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	175	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
110		176
111	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	177	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);
…		…
119	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];	185	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
120	}	186	}
121	OUTPUT:	187	OUTPUT:
122	RETVAL	188	RETVAL
123		189
		190	GdkPixbuf_noinc *
		191	load_jpeg (char *path, int thumbnail=0)
		192	CODE:
		193	{
		194	struct jpeg_decompress_struct cinfo;
		195	struct jpg_err_mgr jerr;
		196	guchar *data;
		197	int rs;
		198	FILE *fp;
		199	volatile GdkPixbuf *pb = 0;
		200	RETVAL = 0;
		201
		202	if (!(fp = fopen (path, "rb")))
		203	XSRETURN_UNDEF;
		204
		205	cinfo.err = jpeg_std_error (&jerr.err);
		206
		207	jerr.err.error_exit = cv_error_exit;
		208	jerr.err.output_message = cv_error_output;
		209
		210	if ((rs = setjmp (jerr.setjmp_buffer)))
		211	{
		212	fclose (fp);
		213	jpeg_destroy_decompress (&cinfo);
		214
		215	if (pb)
		216	g_object_unref ((gpointer)pb);
		217
		218	XSRETURN_UNDEF;
		219	}
		220
		221	jpeg_create_decompress (&cinfo);
		222
		223	jpeg_stdio_src (&cinfo, fp);
		224	jpeg_read_header (&cinfo, TRUE);
		225
		226	cinfo.dct_method = JDCT_DEFAULT;
		227	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		228	cinfo.do_block_smoothing = FALSE;
		229	cinfo.out_color_space = JCS_RGB;
		230	cinfo.quantize_colors = FALSE;
		231
		232	cinfo.scale_num = 1;
		233	cinfo.scale_denom = 1;
		234
		235	jpeg_calc_output_dimensions (&cinfo);
		236
		237	if (thumbnail)
		238	{
		239	cinfo.dct_method = JDCT_FASTEST;
		240	cinfo.do_fancy_upsampling = FALSE;
		241
		242	while (cinfo.scale_denom < 8
		243	&& cinfo.output_width >= IW*4
		244	&& cinfo.output_height >= IH*4)
		245	{
		246	cinfo.scale_denom <<= 1;
		247	jpeg_calc_output_dimensions (&cinfo);
		248	}
		249	}
		250
		251	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
		252	if (!RETVAL)
		253	longjmp (jerr.setjmp_buffer, 2);
		254
		255	data = gdk_pixbuf_get_pixels (RETVAL);
		256	rs = gdk_pixbuf_get_rowstride (RETVAL);
		257
		258	if (cinfo.output_components != 3)
		259	longjmp (jerr.setjmp_buffer, 3);
		260
		261	jpeg_start_decompress (&cinfo);
		262
		263	while (cinfo.output_scanline < cinfo.output_height)
		264	{
		265	int remaining = cinfo.output_height - cinfo.output_scanline;
		266	JSAMPROW rp[4];
		267
		268	rp [0] = data + cinfo.output_scanline * rs;
		269	rp [1] = (guchar *)rp [0] + rs;
		270	rp [2] = (guchar *)rp [1] + rs;
		271	rp [3] = (guchar *)rp [2] + rs;
		272
		273	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		274	}
		275
		276	jpeg_finish_decompress (&cinfo);
		277	fclose (fp);
		278	jpeg_destroy_decompress (&cinfo);
		279	}
		280	OUTPUT:
		281	RETVAL
		282
124	#############################################################################	283	#############################################################################
125		284
126	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	285	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		286
		287	SV *
		288	foldcase (SV *pathsv)
		289	PROTOTYPE: $
		290	CODE:
		291	{
		292	STRLEN plen;
		293	U8 *path = SvPVutf8 (pathsv, plen);
		294	U8 *pend = path + plen;
		295	U8 dst [plen * 6 * 3], *dstp = dst;
		296
		297	while (path < pend)
		298	{
		299	U8 ch = *path;
		300
		301	if (ch >= 'a' && ch <= 'z')
		302	dstp++ = path++;
		303	else if (ch >= '0' && ch <= '9')
		304	{
		305	STRLEN el, nl = 0;
		306	while (path >= '0' && path <= '9' && path < pend)
		307	path++, nl++;
		308
		309	for (el = nl; el < 6; el++)
		310	*dstp++ = '0';
		311
		312	memcpy (dstp, path - nl, nl);
		313	dstp += nl;
		314	}
		315	else
		316	{
		317	STRLEN cl;
		318	to_utf8_fold (path, dstp, &cl);
		319	dstp += cl;
		320	path += is_utf8_char (path);
		321	}
		322	}
		323
		324	RETVAL = newSVpvn (dst, dstp - dst);
		325	}
		326	OUTPUT:
		327	RETVAL
127		328
128	GdkPixbuf_noinc *	329	GdkPixbuf_noinc *
129	p7_to_pb (int w, int h, guchar *src)	330	p7_to_pb (int w, int h, guchar *src)
		331	PROTOTYPE: @
130	CODE:	332	CODE:
131	{	333	{
132	int x, y;	334	int x, y;
133	guchar dst, d;	335	guchar dst, d;
134	int dstr;	336	int dstr;
…		…
156	{	358	{
157	int w = gdk_pixbuf_get_width (pb);	359	int w = gdk_pixbuf_get_width (pb);
158	int h = gdk_pixbuf_get_height (pb);	360	int h = gdk_pixbuf_get_height (pb);
159	int x, y;	361	int x, y;
160	guchar *dst;	362	guchar *dst;
161	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	363	int bpp = gdk_pixbuf_get_n_channels (pb);
162	guchar *src = gdk_pixbuf_get_pixels (pb);	364	guchar *src = gdk_pixbuf_get_pixels (pb);
163	int sstr = gdk_pixbuf_get_rowstride (pb);	365	int sstr = gdk_pixbuf_get_rowstride (pb);
164	int Er[IW], Eg[IW], Eb[IW];	366	int Er[IW], Eg[IW], Eb[IW];
165	int seed = 77;	367	int seed = 77;
166		368
…		…
183	for (x = 0; x < w; x++)	385	for (x = 0; x < w; x++)
184	{	386	{
185	int r, g, b;	387	int r, g, b;
186	guchar p = src + x bpp + y * sstr;	388	guchar p = src + x bpp + y * sstr;
187		389
188	r = ((p[0] + er + Er[x]) * 7 + 128) / 255;	390	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
189	g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255;	391	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
190	b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255;	392	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
191		393
192	r = r > 7 ? 7 : r < 0 ? 0 : r;	394	r = r > 7 ? 7 : r < 0 ? 0 : r;
193	g = g > 7 ? 7 : g < 0 ? 0 : g;	395	g = g > 7 ? 7 : g < 0 ? 0 : g;
194	b = b > 3 ? 3 : b < 0 ? 0 : b;	396	b = b > 3 ? 3 : b < 0 ? 0 : b;
195		397
196	er += p[0] - (r * 255 + 4) / 7;	398	er += p[0] - (r * 255 + 4) / 7;
197	eg += p[1] - (g * 255 + 4) / 7;	399	eg += p[1] - (g * 255 + 4) / 7;
198	eb += p[2] - (b * 255 + 2) / 3;	400	eb += p[2] - (b * 255 + 2) / 3;
199		401
200	Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3;	402	Er[x] = er >> 1; er -= (er + 1) >> 1;
201	Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3;	403	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
202	Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3;	404	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
203		405
204	*dst++ = r << 5 \| g << 2 \| b;	406	*dst++ = r << 5 \| g << 2 \| b;
205	}	407	}
206	}	408	}
207	}	409	}
…		…
211	#############################################################################	413	#############################################################################
212		414
213	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript	415	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
214		416
215	void	417	void
216	dump_pb (PerlIO fp, GdkPixbuf pb)	418	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
217	CODE:	419	CODE:
218	{	420	{
219	int w = gdk_pixbuf_get_width (pb);	421	int w = gdk_pixbuf_get_width (pb);
220	int h = gdk_pixbuf_get_height (pb);	422	int h = gdk_pixbuf_get_height (pb);
221	int x, y, i;	423	int x, y, i;
222	guchar *dst;	424	guchar *dst;
223	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	425	int bpp = gdk_pixbuf_get_n_channels (pb);
224	guchar *src = gdk_pixbuf_get_pixels (pb);	426	guchar *src = gdk_pixbuf_get_pixels (pb);
225	int sstr = gdk_pixbuf_get_rowstride (pb);	427	int sstr = gdk_pixbuf_get_rowstride (pb);
226		428
227	a85_init ();	429	a85_init ();
228		430
229	for (y = 0; y < h; y++)	431	for (y = 0; y < h; y++)
230	for (x = 0; x < w; x++)	432	for (x = 0; x < w; x++)
231	for (i = 0; i < 3; i++)	433	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
232	a85_push (fp, src [x * bpp + y * sstr + i]);	434	a85_push (fp, src [x * bpp + y * sstr + i]);
233		435
234	a85_finish (fp);	436	a85_finish (fp);
235	}	437	}
236		438
		439	void
		440	dump_binary (PerlIO fp, GdkPixbuf pb)
		441	CODE:
		442	{
		443	int w = gdk_pixbuf_get_width (pb);
		444	int h = gdk_pixbuf_get_height (pb);
		445	int x, y, i;
		446	guchar *dst;
		447	int bpp = gdk_pixbuf_get_n_channels (pb);
		448	guchar *src = gdk_pixbuf_get_pixels (pb);
		449	int sstr = gdk_pixbuf_get_rowstride (pb);
237		450
		451	for (y = 0; y < h; y++)
		452	for (x = 0; x < w; x++)
		453	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		454	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		455	}
238		456
		457	#############################################################################
239		458
		459	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		460
		461	SV *
		462	pb_to_hv84 (GdkPixbuf *pb)
		463	CODE:
		464	{
		465	int w = gdk_pixbuf_get_width (pb);
		466	int h = gdk_pixbuf_get_height (pb);
		467	int x, y;
		468	guchar *dst;
		469	int bpp = gdk_pixbuf_get_n_channels (pb);
		470	guchar *src = gdk_pixbuf_get_pixels (pb);
		471	int sstr = gdk_pixbuf_get_rowstride (pb);
		472
		473	RETVAL = newSV (6 * 8 * 12 / 8);
		474	SvPOK_only (RETVAL);
		475	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
		476
		477	dst = SvPVX (RETVAL);
		478
		479	/* some primitive error distribution + random dithering */
		480
		481	for (y = 0; y < h; y++)
		482	{
		483	guchar p = src + y sstr;
		484
		485	for (x = 0; x < w; x += 2)
		486	{
		487	unsigned int r, g, b, h, s, v, H, V1, V2;
		488
		489	if (bpp == 3)
		490	r = p++, g = p++, b = *p++;
		491	else if (bpp == 1)
		492	r = g = b = *p++;
		493	else
		494	abort ();
		495
		496	rgb_to_hsv (r, g, b, &h, &s, &v);
		497
		498	H = (h * 15 / 255) << 4;
		499	V1 = v;
		500
		501	if (bpp == 3)
		502	r = p++, g = p++, b = *p++;
		503	else if (bpp == 1)
		504	r = g = b = *p++;
		505	else
		506	abort ();
		507
		508	rgb_to_hsv (r, g, b, &h, &s, &v);
		509
		510	H \|= h * 15 / 255;
		511	V2 = v;
		512
		513	*dst++ = H;
		514	*dst++ = V1;
		515	*dst++ = V2;
		516	}
		517	}
		518	}
		519	OUTPUT:
		520	RETVAL
		521
		522	SV *
		523	hv84_to_av (unsigned char *hv84)
		524	CODE:
		525	{
		526	int i = 72 / 3;
		527	AV *av = newAV ();
		528
		529	RETVAL = (SV )newRV_noinc ((SV )av);
		530	while (i--)
		531	{
		532	int h = *hv84++;
		533	int v1 = *hv84++;
		534	int v2 = *hv84++;
		535
		536	av_push (av, newSViv (v1));
		537	av_push (av, newSViv ((h >> 4) * 255 / 15));
		538	av_push (av, newSViv (v2));
		539	av_push (av, newSViv ((h & 15) * 255 / 15));
		540	}
		541	}
		542	OUTPUT:
		543	RETVAL
		544
		545	#############################################################################
		546
		547	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
		548
		549	SV *
		550	make_histograms (SV *ar)
		551	CODE:
		552	{
		553	int i;
		554	AV av, result;
		555
		556	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		557	croak ("Not an array ref as first argument to make_histogram");
		558
		559	av = (AV *) SvRV (ar);
		560	result = newAV ();
		561
		562	for (i = 0; i <= av_len (av); ++i)
		563	{
		564	const int HISTSIZE = 64;
		565
		566	int j;
		567	SV sv = av_fetch (av, i, 1);
		568	STRLEN len;
		569	char *buf = SvPVbyte (sv, len);
		570
		571	int tmphist[HISTSIZE];
		572	float *hist;
		573
		574	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
		575	SvPOK_on (histsv);
		576	SvCUR_set (histsv, HISTSIZE * sizeof (float));
		577	hist = (float *)SvPVX (histsv);
		578
		579	Zero (tmphist, sizeof (tmphist), char);
		580
		581	for (j = len; j--; )
		582	{
		583	unsigned int idx
		584	= ((*buf & 0xc0) >> 2)
		585	\| ((*buf & 0x18) >> 1)
		586	\| (*buf & 0x03);
		587
		588	++tmphist[idx];
		589	++buf;
		590	}
		591
		592	for (j = 0; j < HISTSIZE; ++j)
		593	hist[j] = (float)tmphist[j] / (len + 1e-30);
		594
		595	av_push (result, histsv);
		596	}
		597
		598	RETVAL = newRV_noinc ((SV *)result);
		599	}
		600	OUTPUT:
		601	RETVAL
		602
		603

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Comparing CV/CV.xs (file contents): Revision 1.6 by root, Wed Nov 12 00:59:01 2003 UTC vs. Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.6 by root, Wed Nov 12 00:59:01 2003 UTC vs.
Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC