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

Comparing CV/CV.xs (file contents):
Revision 1.5 by root, Sat Nov 8 22:18:50 2003 UTC vs.
Revision 1.18 by root, Wed Jul 20 09:06:37 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)
		18
		19	#define LINELENGTH 240
		20
		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	}
13		67
14	static guint32 a85_val;	68	static guint32 a85_val;
15	static guint a85_cnt;	69	static guint a85_cnt;
16	static guchar a85_buf[80], *a85_ptr;	70	static guchar a85_buf[LINELENGTH], *a85_ptr;
17		71
18	static void	72	static void
19	a85_init (void)	73	a85_init (void)
20	{	74	{
21	a85_cnt = 4;	75	a85_cnt = 4;
51	}	105	}
52	}	106	}
53		107
54	}	108	}
55		109
		110	static void
56	a85_finish (PerlIO *fp)	111	a85_finish (PerlIO *fp)
57	{	112	{
58	while (a85_cnt != 4)	113	while (a85_cnt != 4)
59	a85_push (fp, 0);	114	a85_push (fp, 0);
60		115
…		…
63	*a85_ptr++ = '\n';	118	*a85_ptr++ = '\n';
64		119
65	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	120	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
66	}	121	}
67		122
		123	/////////////////////////////////////////////////////////////////////////////
		124
68	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow	125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
69		126
70	PROTOTYPES: ENABLE	127	PROTOTYPES: ENABLE
71		128
72	GdkPixbuf_noinc *	129	GdkPixbuf_noinc *
73	transpose (GdkPixbuf *pb)	130	transpose (GdkPixbuf *pb)
74	CODE:	131	CODE:
75	{	132	{
76	int w = gdk_pixbuf_get_width (pb);	133	int w = gdk_pixbuf_get_width (pb);
77	int h = gdk_pixbuf_get_height (pb);	134	int h = gdk_pixbuf_get_height (pb);
78	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	135	int bpp = gdk_pixbuf_get_n_channels (pb);
79	int x, y, i;	136	int x, y, i;
80	guchar src = gdk_pixbuf_get_pixels (pb), dst;	137	guchar src = gdk_pixbuf_get_pixels (pb), dst;
81	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	138	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
82		139
83	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	140	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);
…		…
97	flop (GdkPixbuf *pb)	154	flop (GdkPixbuf *pb)
98	CODE:	155	CODE:
99	{	156	{
100	int w = gdk_pixbuf_get_width (pb);	157	int w = gdk_pixbuf_get_width (pb);
101	int h = gdk_pixbuf_get_height (pb);	158	int h = gdk_pixbuf_get_height (pb);
102	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	159	int bpp = gdk_pixbuf_get_n_channels (pb);
103	int x, y, i;	160	int x, y, i;
104	guchar src = gdk_pixbuf_get_pixels (pb), dst;	161	guchar src = gdk_pixbuf_get_pixels (pb), dst;
105	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	162	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
106		163
107	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	164	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);
…		…
115	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];	172	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
116	}	173	}
117	OUTPUT:	174	OUTPUT:
118	RETVAL	175	RETVAL
119		176
		177	GdkPixbuf_noinc *
		178	load_jpeg (char *path, int thumbnail=0)
		179	CODE:
		180	{
		181	struct jpeg_decompress_struct cinfo;
		182	struct jpg_err_mgr jerr;
		183	guchar *data;
		184	int rs;
		185	FILE *fp;
		186	volatile GdkPixbuf *pb = 0;
		187	RETVAL = 0;
		188
		189	if (!(fp = fopen (path, "rb")))
		190	XSRETURN_UNDEF;
		191
		192	cinfo.err = jpeg_std_error (&jerr.err);
		193
		194	jerr.err.error_exit = cv_error_exit;
		195	jerr.err.output_message = cv_error_output;
		196
		197	if ((rs = setjmp (jerr.setjmp_buffer)))
		198	{
		199	fclose (fp);
		200	jpeg_destroy_decompress (&cinfo);
		201
		202	if (pb)
		203	g_object_unref ((gpointer)pb);
		204
		205	XSRETURN_UNDEF;
		206	}
		207
		208	jpeg_create_decompress (&cinfo);
		209
		210	jpeg_stdio_src (&cinfo, fp);
		211	jpeg_read_header (&cinfo, TRUE);
		212
		213	cinfo.dct_method = JDCT_DEFAULT;
		214	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		215	cinfo.do_block_smoothing = FALSE;
		216	cinfo.out_color_space = JCS_RGB;
		217	cinfo.quantize_colors = FALSE;
		218
		219	cinfo.scale_num = 1;
		220	cinfo.scale_denom = 1;
		221
		222	jpeg_calc_output_dimensions (&cinfo);
		223
		224	if (thumbnail)
		225	{
		226	cinfo.dct_method = JDCT_FASTEST;
		227	cinfo.do_fancy_upsampling = FALSE;
		228
		229	while (cinfo.scale_denom < 8
		230	&& (cinfo.output_width >> 1) >= IW
		231	&& (cinfo.output_height >> 1) >= IH)
		232	{
		233	cinfo.scale_denom <<= 1;
		234	jpeg_calc_output_dimensions (&cinfo);
		235	}
		236	}
		237
		238	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
		239	if (!RETVAL)
		240	longjmp (jerr.setjmp_buffer, 2);
		241
		242	data = gdk_pixbuf_get_pixels (RETVAL);
		243	rs = gdk_pixbuf_get_rowstride (RETVAL);
		244
		245	if (cinfo.output_components != 3)
		246	longjmp (jerr.setjmp_buffer, 3);
		247
		248	jpeg_start_decompress (&cinfo);
		249
		250	while (cinfo.output_scanline < cinfo.output_height)
		251	{
		252	int remaining = cinfo.output_height - cinfo.output_scanline;
		253	JSAMPROW rp[4];
		254
		255	rp [0] = data + cinfo.output_scanline * rs;
		256	rp [1] = (guchar *)rp [0] + rs;
		257	rp [2] = (guchar *)rp [1] + rs;
		258	rp [3] = (guchar *)rp [2] + rs;
		259
		260	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		261	}
		262
		263	jpeg_finish_decompress (&cinfo);
		264	fclose (fp);
		265	jpeg_destroy_decompress (&cinfo);
		266	}
		267	OUTPUT:
		268	RETVAL
		269
		270	#############################################################################
		271
120	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	272	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		273
		274	SV *
		275	foldcase (SV *pathsv)
		276	PROTOTYPE: $
		277	CODE:
		278	{
		279	STRLEN plen;
		280	U8 *path = SvPVutf8 (pathsv, plen);
		281	U8 *pend = path + plen;
		282	U8 dst [plen * 6 * 3], *dstp = dst;
		283
		284	while (path < pend)
		285	{
		286	if (path >= '0' && path <= '9')
		287	{
		288	STRLEN el, nl = 0;
		289	while (path >= '0' && path <= '9')
		290	path++, nl++;
		291
		292	for (el = nl; el < 6; el++)
		293	*dstp++ = '0';
		294
		295	memcpy (dstp, path - nl, nl);
		296	dstp += nl;
		297	}
		298	else
		299	{
		300	STRLEN cl;
		301	to_utf8_fold (path, dstp, &cl);
		302	dstp += cl;
		303	path += is_utf8_char (path);
		304	}
		305	}
		306
		307	RETVAL = newSVpvn (dst, dstp - dst);
		308	}
		309	OUTPUT:
		310	RETVAL
121		311
122	GdkPixbuf_noinc *	312	GdkPixbuf_noinc *
123	p7_to_pb (int w, int h, guchar *src)	313	p7_to_pb (int w, int h, guchar *src)
124	CODE:	314	CODE:
125	{	315	{
…		…
150	{	340	{
151	int w = gdk_pixbuf_get_width (pb);	341	int w = gdk_pixbuf_get_width (pb);
152	int h = gdk_pixbuf_get_height (pb);	342	int h = gdk_pixbuf_get_height (pb);
153	int x, y;	343	int x, y;
154	guchar *dst;	344	guchar *dst;
155	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	345	int bpp = gdk_pixbuf_get_n_channels (pb);
156	guchar *src = gdk_pixbuf_get_pixels (pb);	346	guchar *src = gdk_pixbuf_get_pixels (pb);
157	int sstr = gdk_pixbuf_get_rowstride (pb);	347	int sstr = gdk_pixbuf_get_rowstride (pb);
158	int Er[IW], Eg[IW], Eb[IW];	348	int Er[IW], Eg[IW], Eb[IW];
159	int seed = 77;	349	int seed = 77;
160		350
…		…
177	for (x = 0; x < w; x++)	367	for (x = 0; x < w; x++)
178	{	368	{
179	int r, g, b;	369	int r, g, b;
180	guchar p = src + x bpp + y * sstr;	370	guchar p = src + x bpp + y * sstr;
181		371
182	r = ((p[0] + er + Er[x]) * 7 + 128) / 255;	372	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
183	g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255;	373	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
184	b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255;	374	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
185		375
186	r = r > 7 ? 7 : r < 0 ? 0 : r;	376	r = r > 7 ? 7 : r < 0 ? 0 : r;
187	g = g > 7 ? 7 : g < 0 ? 0 : g;	377	g = g > 7 ? 7 : g < 0 ? 0 : g;
188	b = b > 3 ? 3 : b < 0 ? 0 : b;	378	b = b > 3 ? 3 : b < 0 ? 0 : b;
189		379
190	er += p[0] - (r * 255 + 4) / 7;	380	er += p[0] - (r * 255 + 4) / 7;
191	eg += p[1] - (g * 255 + 4) / 7;	381	eg += p[1] - (g * 255 + 4) / 7;
192	eb += p[2] - (b * 255 + 2) / 3;	382	eb += p[2] - (b * 255 + 2) / 3;
193		383
194	Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3;	384	Er[x] = er >> 1; er -= (er + 1) >> 1;
195	Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3;	385	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
196	Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3;	386	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
197		387
198	*dst++ = r << 5 \| g << 2 \| b;	388	*dst++ = r << 5 \| g << 2 \| b;
199	}	389	}
200	}	390	}
201	}	391	}
202	OUTPUT:	392	OUTPUT:
203	RETVAL	393	RETVAL
204		394
		395	SV *
		396	make_histogram (SV *ar)
		397	CODE:
		398	{
		399	int i;
		400	AV av, result;
		401
		402	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		403	croak ("Not an array ref as first argument to make_histogram");
		404
		405	av = (AV *) SvRV (ar);
		406	result = newAV ();
		407
		408	for (i = 0; i <= av_len (av); ++i)
		409	{
		410	const int HISTSIZE = 64;
		411
		412	int j;
		413	SV sv = av_fetch (av, i, 1);
		414	STRLEN len;
		415	char *buf = SvPVbyte (sv, len);
		416
		417	int tmphist[HISTSIZE];
		418	float *hist;
		419
		420	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
		421	SvPOK_on (histsv);
		422	SvCUR_set (histsv, HISTSIZE * sizeof (float));
		423	hist = (float *)SvPVX (histsv);
		424
		425	Zero (tmphist, sizeof (tmphist), char);
		426
		427	for (j = len; j--; )
		428	{
		429	unsigned int idx
		430	= ((*buf & 0xc0) >> 2)
		431	\| ((*buf & 0x18) >> 1)
		432	\| (*buf & 0x03);
		433
		434	++tmphist[idx];
		435	++buf;
		436	}
		437
		438	for (j = 0; j < HISTSIZE; ++j)
		439	hist[j] = (float)tmphist[j] / (len + 1e-30);
		440
		441	av_push (result, histsv);
		442	}
		443
		444	RETVAL = newRV_noinc ((SV *)result);
		445	}
		446	OUTPUT:
		447	RETVAL
		448
		449	#############################################################################
		450
205	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript	451	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
206		452
207	void	453	void
208	dump_pb (PerlIO fp, GdkPixbuf pb)	454	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
209	CODE:	455	CODE:
210	{	456	{
211	int w = gdk_pixbuf_get_width (pb);	457	int w = gdk_pixbuf_get_width (pb);
212	int h = gdk_pixbuf_get_height (pb);	458	int h = gdk_pixbuf_get_height (pb);
213	int x, y, i;	459	int x, y, i;
214	guchar *dst;	460	guchar *dst;
215	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	461	int bpp = gdk_pixbuf_get_n_channels (pb);
216	guchar *src = gdk_pixbuf_get_pixels (pb);	462	guchar *src = gdk_pixbuf_get_pixels (pb);
217	int sstr = gdk_pixbuf_get_rowstride (pb);	463	int sstr = gdk_pixbuf_get_rowstride (pb);
218		464
219	a85_init ();	465	a85_init ();
220		466
221	for (y = 0; y < h; y++)	467	for (y = 0; y < h; y++)
222	for (x = 0; x < w; x++)	468	for (x = 0; x < w; x++)
223	for (i = 0; i < 3; i++)	469	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
224	a85_push (fp, src [x * bpp + y * sstr + i]);	470	a85_push (fp, src [x * bpp + y * sstr + i]);
225		471
226	a85_finish (fp);	472	a85_finish (fp);
227	}	473	}
228		474
		475	void
		476	dump_binary (PerlIO fp, GdkPixbuf pb)
		477	CODE:
		478	{
		479	int w = gdk_pixbuf_get_width (pb);
		480	int h = gdk_pixbuf_get_height (pb);
		481	int x, y, i;
		482	guchar *dst;
		483	int bpp = gdk_pixbuf_get_n_channels (pb);
		484	guchar *src = gdk_pixbuf_get_pixels (pb);
		485	int sstr = gdk_pixbuf_get_rowstride (pb);
229		486
		487	for (y = 0; y < h; y++)
		488	for (x = 0; x < w; x++)
		489	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		490	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		491	}
230		492
		493	#############################################################################
231		494
		495	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		496
		497	SV *
		498	pb_to_hv84 (GdkPixbuf *pb)
		499	CODE:
		500	{
		501	int w = gdk_pixbuf_get_width (pb);
		502	int h = gdk_pixbuf_get_height (pb);
		503	int x, y;
		504	guchar *dst;
		505	int bpp = gdk_pixbuf_get_n_channels (pb);
		506	guchar *src = gdk_pixbuf_get_pixels (pb);
		507	int sstr = gdk_pixbuf_get_rowstride (pb);
		508
		509	RETVAL = newSV (6 * 8 * 12 / 8);
		510	SvPOK_only (RETVAL);
		511	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
		512
		513	dst = SvPVX (RETVAL);
		514
		515	/* some primitive error distribution + random dithering */
		516
		517	for (y = 0; y < h; y++)
		518	{
		519	guchar p = src + y sstr;
		520
		521	for (x = 0; x < w; x += 2)
		522	{
		523	unsigned int r, g, b, h, s, v, H, V1, V2;
		524
		525	if (bpp == 3)
		526	r = p++, g = p++, b = *p++;
		527	else if (bpp == 1)
		528	r = g = b = *p++;
		529	else
		530	abort ();
		531
		532	rgb_to_hsv (r, g, b, &h, &s, &v);
		533
		534	H = (h * 15 / 255) << 4;
		535	V1 = v;
		536
		537	if (bpp == 3)
		538	r = p++, g = p++, b = *p++;
		539	else if (bpp == 1)
		540	r = g = b = *p++;
		541	else
		542	abort ();
		543
		544	rgb_to_hsv (r, g, b, &h, &s, &v);
		545
		546	H \|= h * 15 / 255;
		547	V2 = v;
		548
		549	*dst++ = H;
		550	*dst++ = V1;
		551	*dst++ = V2;
		552	}
		553	}
		554	}
		555	OUTPUT:
		556	RETVAL
		557
		558	SV *
		559	hv84_to_av (unsigned char *hv84)
		560	CODE:
		561	{
		562	int i = 72 / 3;
		563	AV *av = newAV ();
		564
		565	RETVAL = (SV )newRV_noinc ((SV )av);
		566	while (i--)
		567	{
		568	int h = *hv84++;
		569	int v1 = *hv84++;
		570	int v2 = *hv84++;
		571
		572	av_push (av, newSViv (v1));
		573	av_push (av, newSViv ((h >> 4) * 255 / 15));
		574	av_push (av, newSViv (v2));
		575	av_push (av, newSViv ((h & 15) * 255 / 15));
		576	}
		577	}
		578	OUTPUT:
		579	RETVAL
		580
		581
		582

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Comparing CV/CV.xs (file contents): Revision 1.5 by root, Sat Nov 8 22:18:50 2003 UTC vs. Revision 1.18 by root, Wed Jul 20 09:06:37 2005 UTC

Diff Legend

Comparing CV/CV.xs (file contents):
Revision 1.5 by root, Sat Nov 8 22:18:50 2003 UTC vs.
Revision 1.18 by root, Wed Jul 20 09:06:37 2005 UTC