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

Comparing CV/CV.xs (file contents):
Revision 1.2 by root, Mon Nov 3 00:04:22 2003 UTC vs.
Revision 1.19 by root, Wed Jul 20 22:33:01 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
		14	#define IW 80 /* MUST match Schnauer.pm! */
		15	#define IH 60 /* MUST match Schnauer.pm! */
		16
		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	}
		67
		68	static guint32 a85_val;
		69	static guint a85_cnt;
		70	static guchar a85_buf[LINELENGTH], *a85_ptr;
		71
		72	static void
		73	a85_init (void)
		74	{
		75	a85_cnt = 4;
		76	a85_ptr = a85_buf;
		77	}
		78
		79	static void
		80	a85_push (PerlIO *fp, guchar c)
		81	{
		82	a85_val = a85_val << 8 \| c;
		83
		84	if (!--a85_cnt)
		85	{
		86	a85_cnt = 4;
		87	if (a85_val)
		88	{
		89	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
		90	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
		91	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
		92	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
		93	a85_ptr[0] = (a85_val ) + 33;
		94
		95	a85_ptr += 5;
		96	}
		97	else
		98	*a85_ptr++ = 'z';
		99
		100	if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7)
		101	{
		102	*a85_ptr++ = '\n';
		103	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
		104	a85_ptr = a85_buf;
		105	}
		106	}
		107
		108	}
		109
		110	static void
		111	a85_finish (PerlIO *fp)
		112	{
		113	while (a85_cnt != 4)
		114	a85_push (fp, 0);
		115
		116	*a85_ptr++ = '~'; // probably buggy end-marker
		117	*a85_ptr++ = '>'; // probably buggy end-marker
		118	*a85_ptr++ = '\n';
		119
		120	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
		121	}
		122
		123	/////////////////////////////////////////////////////////////////////////////
		124
10	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow	125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
11		126
12	PROTOTYPES: ENABLE	127	PROTOTYPES: ENABLE
13		128
14	GdkPixbuf *	129	GdkPixbuf_noinc *
15	transpose (GdkPixbuf *pb)	130	transpose (GdkPixbuf *pb)
16	CODE:	131	CODE:
17	{	132	{
18	int w = gdk_pixbuf_get_width (pb);	133	int w = gdk_pixbuf_get_width (pb);
19	int h = gdk_pixbuf_get_height (pb);	134	int h = gdk_pixbuf_get_height (pb);
20	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	135	int bpp = gdk_pixbuf_get_n_channels (pb);
21	int x, y, i;	136	int x, y, i;
22	guchar src = gdk_pixbuf_get_pixels (pb), dst;	137	guchar src = gdk_pixbuf_get_pixels (pb), dst;
23	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	138	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
24		139
25	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);
26		141
27	dst = gdk_pixbuf_get_pixels (RETVAL);	142	dst = gdk_pixbuf_get_pixels (RETVAL);
28	dstr = gdk_pixbuf_get_rowstride (RETVAL);	143	dstr = gdk_pixbuf_get_rowstride (RETVAL);
29		144
30	for (x = 0; x < w; x++)
31	for (y = 0; y < h; y++)	145	for (y = 0; y < h; y++)
		146	for (x = 0; x < w; x++)
32	for (i = 0; i < bpp; i++)	147	for (i = 0; i < bpp; i++)
33	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	148	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];
34	}	149	}
35	OUTPUT:	150	OUTPUT:
36	RETVAL	151	RETVAL
37		152
38	GdkPixbuf *	153	GdkPixbuf_noinc *
39	flop (GdkPixbuf *pb)	154	flop (GdkPixbuf *pb)
40	CODE:	155	CODE:
41	{	156	{
42	int w = gdk_pixbuf_get_width (pb);	157	int w = gdk_pixbuf_get_width (pb);
43	int h = gdk_pixbuf_get_height (pb);	158	int h = gdk_pixbuf_get_height (pb);
44	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	159	int bpp = gdk_pixbuf_get_n_channels (pb);
45	int x, y, i;	160	int x, y, i;
46	guchar src = gdk_pixbuf_get_pixels (pb), dst;	161	guchar src = gdk_pixbuf_get_pixels (pb), dst;
47	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	162	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
48		163
49	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);
50		165
51	dst = gdk_pixbuf_get_pixels (RETVAL);	166	dst = gdk_pixbuf_get_pixels (RETVAL);
52	dstr = gdk_pixbuf_get_rowstride (RETVAL);	167	dstr = gdk_pixbuf_get_rowstride (RETVAL);
53		168
54	for (x = 0; x < w; x++)
55	for (y = 0; y < h; y++)	169	for (y = 0; y < h; y++)
		170	for (x = 0; x < w; x++)
56	for (i = 0; i < bpp; i++)	171	for (i = 0; i < bpp; i++)
57	dst[(w - 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];
58	}	173	}
59	OUTPUT:	174	OUTPUT:
		175	RETVAL
		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;
60	RETVAL	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	#############################################################################
61		271
62	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	272	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
63		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	U8 ch = *path;
		287
		288	if (ch >= 'a' && ch <= 'z')
		289	dstp++ = path++;
		290	else if (ch >= '0' && ch <= '9')
		291	{
		292	STRLEN el, nl = 0;
		293	while (path >= '0' && path <= '9' && path < pend)
		294	path++, nl++;
		295
		296	for (el = nl; el < 6; el++)
		297	*dstp++ = '0';
		298
		299	memcpy (dstp, path - nl, nl);
		300	dstp += nl;
		301	}
		302	else
		303	{
		304	STRLEN cl;
		305	to_utf8_fold (path, dstp, &cl);
		306	dstp += cl;
		307	path += is_utf8_char (path);
		308	}
		309	}
		310
		311	RETVAL = newSVpvn (dst, dstp - dst);
		312	}
		313	OUTPUT:
		314	RETVAL
		315
64	GdkPixbuf *	316	GdkPixbuf_noinc *
65	p7_to_pb (int w, int h, guchar *src)	317	p7_to_pb (int w, int h, guchar *src)
66	CODE:	318	CODE:
67	{	319	{
68	int x, y;	320	int x, y;
69	guchar dst, d;	321	guchar dst, d;
74	dstr = gdk_pixbuf_get_rowstride (RETVAL);	326	dstr = gdk_pixbuf_get_rowstride (RETVAL);
75		327
76	for (y = 0; y < h; y++)	328	for (y = 0; y < h; y++)
77	for (d = dst + y * dstr, x = 0; x < w; x++)	329	for (d = dst + y * dstr, x = 0; x < w; x++)
78	{	330	{
79	d++ = ((src >> 5) & 7) * 255 / 7;	331	d++ = (((src >> 5) & 7) * 255 + 4) / 7;
80	d++ = ((src >> 2) & 7) * 255 / 7;	332	d++ = (((src >> 2) & 7) * 255 + 4) / 7;
81	d++ = ((src >> 0) & 3) * 255 / 3;	333	d++ = (((src >> 0) & 3) * 255 + 2) / 3;
82		334
83	src++;	335	src++;
84	}	336	}
85	}	337	}
86	OUTPUT:	338	OUTPUT:
87	RETVAL	339	RETVAL
88		340
		341	SV *
		342	pb_to_p7 (GdkPixbuf *pb)
		343	CODE:
		344	{
		345	int w = gdk_pixbuf_get_width (pb);
		346	int h = gdk_pixbuf_get_height (pb);
		347	int x, y;
		348	guchar *dst;
		349	int bpp = gdk_pixbuf_get_n_channels (pb);
		350	guchar *src = gdk_pixbuf_get_pixels (pb);
		351	int sstr = gdk_pixbuf_get_rowstride (pb);
		352	int Er[IW], Eg[IW], Eb[IW];
		353	int seed = 77;
89		354
		355	RETVAL = newSV (w * h);
		356	SvPOK_only (RETVAL);
		357	SvCUR_set (RETVAL, w * h);
90		358
		359	dst = SvPVX (RETVAL);
		360
		361	memset (Er, 0, sizeof (int) * IW);
		362	memset (Eg, 0, sizeof (int) * IW);
		363	memset (Eb, 0, sizeof (int) * IW);
		364
		365	/* some primitive error distribution + random dithering */
		366
		367	for (y = 0; y < h; y++)
		368	{
		369	int er = 0, eg = 0, eb = 0;
		370
		371	for (x = 0; x < w; x++)
		372	{
		373	int r, g, b;
		374	guchar p = src + x bpp + y * sstr;
		375
		376	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
		377	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
		378	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
		379
		380	r = r > 7 ? 7 : r < 0 ? 0 : r;
		381	g = g > 7 ? 7 : g < 0 ? 0 : g;
		382	b = b > 3 ? 3 : b < 0 ? 0 : b;
		383
		384	er += p[0] - (r * 255 + 4) / 7;
		385	eg += p[1] - (g * 255 + 4) / 7;
		386	eb += p[2] - (b * 255 + 2) / 3;
		387
		388	Er[x] = er >> 1; er -= (er + 1) >> 1;
		389	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
		390	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
		391
		392	*dst++ = r << 5 \| g << 2 \| b;
		393	}
		394	}
		395	}
		396	OUTPUT:
		397	RETVAL
		398
		399	SV *
		400	make_histogram (SV *ar)
		401	CODE:
		402	{
		403	int i;
		404	AV av, result;
		405
		406	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		407	croak ("Not an array ref as first argument to make_histogram");
		408
		409	av = (AV *) SvRV (ar);
		410	result = newAV ();
		411
		412	for (i = 0; i <= av_len (av); ++i)
		413	{
		414	const int HISTSIZE = 64;
		415
		416	int j;
		417	SV sv = av_fetch (av, i, 1);
		418	STRLEN len;
		419	char *buf = SvPVbyte (sv, len);
		420
		421	int tmphist[HISTSIZE];
		422	float *hist;
		423
		424	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
		425	SvPOK_on (histsv);
		426	SvCUR_set (histsv, HISTSIZE * sizeof (float));
		427	hist = (float *)SvPVX (histsv);
		428
		429	Zero (tmphist, sizeof (tmphist), char);
		430
		431	for (j = len; j--; )
		432	{
		433	unsigned int idx
		434	= ((*buf & 0xc0) >> 2)
		435	\| ((*buf & 0x18) >> 1)
		436	\| (*buf & 0x03);
		437
		438	++tmphist[idx];
		439	++buf;
		440	}
		441
		442	for (j = 0; j < HISTSIZE; ++j)
		443	hist[j] = (float)tmphist[j] / (len + 1e-30);
		444
		445	av_push (result, histsv);
		446	}
		447
		448	RETVAL = newRV_noinc ((SV *)result);
		449	}
		450	OUTPUT:
		451	RETVAL
		452
		453	#############################################################################
		454
		455	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		456
		457	void
		458	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		459	CODE:
		460	{
		461	int w = gdk_pixbuf_get_width (pb);
		462	int h = gdk_pixbuf_get_height (pb);
		463	int x, y, i;
		464	guchar *dst;
		465	int bpp = gdk_pixbuf_get_n_channels (pb);
		466	guchar *src = gdk_pixbuf_get_pixels (pb);
		467	int sstr = gdk_pixbuf_get_rowstride (pb);
		468
		469	a85_init ();
		470
		471	for (y = 0; y < h; y++)
		472	for (x = 0; x < w; x++)
		473	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		474	a85_push (fp, src [x * bpp + y * sstr + i]);
		475
		476	a85_finish (fp);
		477	}
		478
		479	void
		480	dump_binary (PerlIO fp, GdkPixbuf pb)
		481	CODE:
		482	{
		483	int w = gdk_pixbuf_get_width (pb);
		484	int h = gdk_pixbuf_get_height (pb);
		485	int x, y, i;
		486	guchar *dst;
		487	int bpp = gdk_pixbuf_get_n_channels (pb);
		488	guchar *src = gdk_pixbuf_get_pixels (pb);
		489	int sstr = gdk_pixbuf_get_rowstride (pb);
		490
		491	for (y = 0; y < h; y++)
		492	for (x = 0; x < w; x++)
		493	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		494	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		495	}
		496
		497	#############################################################################
		498
		499	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		500
		501	SV *
		502	pb_to_hv84 (GdkPixbuf *pb)
		503	CODE:
		504	{
		505	int w = gdk_pixbuf_get_width (pb);
		506	int h = gdk_pixbuf_get_height (pb);
		507	int x, y;
		508	guchar *dst;
		509	int bpp = gdk_pixbuf_get_n_channels (pb);
		510	guchar *src = gdk_pixbuf_get_pixels (pb);
		511	int sstr = gdk_pixbuf_get_rowstride (pb);
		512
		513	RETVAL = newSV (6 * 8 * 12 / 8);
		514	SvPOK_only (RETVAL);
		515	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
		516
		517	dst = SvPVX (RETVAL);
		518
		519	/* some primitive error distribution + random dithering */
		520
		521	for (y = 0; y < h; y++)
		522	{
		523	guchar p = src + y sstr;
		524
		525	for (x = 0; x < w; x += 2)
		526	{
		527	unsigned int r, g, b, h, s, v, H, V1, V2;
		528
		529	if (bpp == 3)
		530	r = p++, g = p++, b = *p++;
		531	else if (bpp == 1)
		532	r = g = b = *p++;
		533	else
		534	abort ();
		535
		536	rgb_to_hsv (r, g, b, &h, &s, &v);
		537
		538	H = (h * 15 / 255) << 4;
		539	V1 = v;
		540
		541	if (bpp == 3)
		542	r = p++, g = p++, b = *p++;
		543	else if (bpp == 1)
		544	r = g = b = *p++;
		545	else
		546	abort ();
		547
		548	rgb_to_hsv (r, g, b, &h, &s, &v);
		549
		550	H \|= h * 15 / 255;
		551	V2 = v;
		552
		553	*dst++ = H;
		554	*dst++ = V1;
		555	*dst++ = V2;
		556	}
		557	}
		558	}
		559	OUTPUT:
		560	RETVAL
		561
		562	SV *
		563	hv84_to_av (unsigned char *hv84)
		564	CODE:
		565	{
		566	int i = 72 / 3;
		567	AV *av = newAV ();
		568
		569	RETVAL = (SV )newRV_noinc ((SV )av);
		570	while (i--)
		571	{
		572	int h = *hv84++;
		573	int v1 = *hv84++;
		574	int v2 = *hv84++;
		575
		576	av_push (av, newSViv (v1));
		577	av_push (av, newSViv ((h >> 4) * 255 / 15));
		578	av_push (av, newSViv (v2));
		579	av_push (av, newSViv ((h & 15) * 255 / 15));
		580	}
		581	}
		582	OUTPUT:
		583	RETVAL
		584
		585
		586

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Comparing CV/CV.xs (file contents): Revision 1.2 by root, Mon Nov 3 00:04:22 2003 UTC vs. Revision 1.19 by root, Wed Jul 20 22:33:01 2005 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.2 by root, Mon Nov 3 00:04:22 2003 UTC vs.
Revision 1.19 by root, Wed Jul 20 22:33:01 2005 UTC