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

Comparing CV/CV.xs (file contents):
Revision 1.12 by root, Tue Feb 8 11:00:11 2005 UTC vs.
Revision 1.55 by root, Sat Dec 23 08:05:32 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 <jerror.h>
		13
		14	#include <glib.h>
		15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
5	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
6		18
7	#include <gperl.h>	19	#include <gperl.h>
8	#include <gtk2perl.h>	20	#include <gtk2perl.h>
9		21
10	#define IW 80	22	#include <assert.h>
		23
		24	#if WEBP
		25	#include <webp/demux.h>
		26	#include <webp/decode.h>
		27	#endif
		28
		29	#include "perlmulticore.h"
		30
		31	#define IW 80 /* MUST match Schnauzer.pm! */
		32	#define IH 60 /* MUST match Schnauzer.pm! */
11		33
12	#define RAND (seed = (seed + 7141) * 54773 % 134456)	34	#define RAND (seed = (seed + 7141) * 54773 % 134456)
13		35
14	#define LINELENGTH 240	36	#define LINELENGTH 240
15		37
16	#define ELLIPSIS "\xe2\x80\xa6"	38	#define ELLIPSIS "\xe2\x80\xa6"
17		39
18	static guint32 a85_val;	40	typedef char *octet_string;
19	static guint a85_cnt;
20	static guchar a85_buf[LINELENGTH], *a85_ptr;
21		41
22	static void	42	static magic_t magic_cookie[2]; /* !mime, mime */
23	a85_init (void)
24	{
25	a85_cnt = 4;
26	a85_ptr = a85_buf;
27	}
28		43
29	static void	44	struct jpg_err_mgr
30	a85_push (PerlIO *fp, guchar c)
31	{	45	{
32	a85_val = a85_val << 8 \| c;	46	struct jpeg_error_mgr err;
		47	jmp_buf setjmp_buffer;
		48	};
33		49
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	}
59
60	static void	50	static void
61	a85_finish (PerlIO *fp)	51	cv_error_exit (j_common_ptr cinfo)
62	{	52	{
63	while (a85_cnt != 4)	53	cinfo->err->output_message (cinfo);
64	a85_push (fp, 0);	54	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
		55	}
65		56
66	*a85_ptr++ = '~'; // probably buggy end-marker	57	static void
67	*a85_ptr++ = '>'; // probably buggy end-marker	58	cv_error_output (j_common_ptr cinfo)
68	*a85_ptr++ = '\n';	59	{
		60	char msg[JMSG_LENGTH_MAX];
69		61
70	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	62	cinfo->err->format_message (cinfo, msg);
		63
		64	fprintf (stderr, "JPEG decoding error: %s\n", msg);
		65	return;
71	}	66	}
72		67
73	static void	68	static void
74	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,	69	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
75	unsigned int h, unsigned int s, unsigned int *v)	70	unsigned int h, unsigned int s, unsigned int *v)
95		90
96	*h &= 255;	91	*h &= 255;
97	}	92	}
98	}	93	}
99		94
		95	struct feature {
		96	float v1, v2, v3; // mean, square, cube
		97	int n;
		98	};
		99
		100	static void
		101	feature_init (struct feature *f)
		102	{
		103	f->v1 = 0.;
		104	f->v2 = 0.;
		105	f->v3 = 0.;
		106	f->n = 0;
		107	}
		108
		109	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		110	// elmex ist schuld.
		111	static void
		112	feature_update_pass_1 (struct feature *f, unsigned int v)
		113	{
		114	f->v1 += v;
		115	f->n += 1;
		116	}
		117
		118	static void
		119	feature_finish_pass_1 (struct feature *f)
		120	{
		121	if (f->n < 1)
		122	return;
		123
		124	f->v1 /= f->n;
		125	}
		126
		127	static void
		128	feature_update_pass_2 (struct feature *f, unsigned int v)
		129	{
		130	float d = v - f->v1;
		131
		132	f->v2 += d * d;
		133	f->v3 += d * d * d;
		134	}
		135
		136	static void
		137	feature_finish_pass_2 (struct feature *f)
		138	{
		139	if (f->n < 1)
		140	return;
		141
		142	f->v2 /= f->n;
		143	f->v3 /= f->n;
		144
		145	f->v1 /= 255.;
		146	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		147	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		148	}
		149
		150	static guint32 a85_val;
		151	static guint a85_cnt;
		152	static guchar a85_buf[LINELENGTH], *a85_ptr;
		153
		154	static void
		155	a85_init (void)
		156	{
		157	a85_cnt = 4;
		158	a85_ptr = a85_buf;
		159	}
		160
		161	static void
		162	a85_push (PerlIO *fp, guchar c)
		163	{
		164	a85_val = a85_val << 8 \| c;
		165
		166	if (!--a85_cnt)
		167	{
		168	a85_cnt = 4;
		169	if (a85_val)
		170	{
		171	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
		172	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
		173	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
		174	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
		175	a85_ptr[0] = (a85_val ) + 33;
		176
		177	a85_ptr += 5;
		178	}
		179	else
		180	*a85_ptr++ = 'z';
		181
		182	if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7)
		183	{
		184	*a85_ptr++ = '\n';
		185	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
		186	a85_ptr = a85_buf;
		187	}
		188	}
		189
		190	}
		191
		192	static void
		193	a85_finish (PerlIO *fp)
		194	{
		195	while (a85_cnt != 4)
		196	a85_push (fp, 0);
		197
		198	*a85_ptr++ = '~'; // probably buggy end-marker
		199	*a85_ptr++ = '>'; // probably buggy end-marker
		200	*a85_ptr++ = '\n';
		201
		202	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
		203	}
		204
100	/////////////////////////////////////////////////////////////////////////////	205	/////////////////////////////////////////////////////////////////////////////
101		206
		207	static void cv_ms_init (j_decompress_ptr cinfo)
		208	{
		209	}
		210
		211	static void cv_ms_term (j_decompress_ptr cinfo)
		212	{
		213	}
		214
		215	static boolean cv_ms_fill (j_decompress_ptr cinfo)
		216	{
		217	ERREXIT (cinfo, JERR_INPUT_EMPTY);
		218
		219	return TRUE;
		220	}
		221
		222	static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
		223	{
		224	if (num_bytes > 0)
		225	{
		226	struct jpeg_source_mgr src = (struct jpeg_source_mgr )cinfo->src;
		227
		228	src->next_input_byte += num_bytes;
		229	src->bytes_in_buffer -= num_bytes;
		230	}
		231	}
		232
		233	static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
		234	{
		235	struct jpeg_source_mgr *src;
		236
		237	if (!cinfo->src)
		238	cinfo->src = (struct jpeg_source_mgr *)
		239	(*cinfo->mem->alloc_small) (
		240	(j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
		241	);
		242
		243	src = (struct jpeg_source_mgr *)cinfo->src;
		244	src->init_source = cv_ms_init;
		245	src->fill_input_buffer = cv_ms_fill;
		246	src->skip_input_data = cv_ms_skip;
		247	src->resync_to_restart = jpeg_resync_to_restart;
		248	src->term_source = cv_ms_term;
		249	src->next_input_byte = (JOCTET *)buf;
		250	src->bytes_in_buffer = buflen;
		251	}
		252
		253	/////////////////////////////////////////////////////////////////////////////
		254
102	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	255	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
103		256
104	PROTOTYPES: ENABLE	257	PROTOTYPES: ENABLE
105		258
		259	# missing function in perl. really :)
		260	int
		261	common_prefix_length (a, b)
		262	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		263	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		264	CODE:
		265	RETVAL = 0;
		266
		267	while (a == b && *a)
		268	{
		269	RETVAL += (*a & 0xc0) != 0x80;
		270	a++, b++;
		271	}
		272
		273	OUTPUT:
		274	RETVAL
		275
		276	const char *
		277	magic (SV *path_or_data)
		278	ALIAS:
		279	magic = 0
		280	magic_mime = 1
		281	magic_buffer = 2
		282	magic_buffer_mime = 3
		283	CODE:
		284	{
		285	STRLEN len;
		286	char *data = SvPVbyte (path_or_data, len);
		287
		288	if (!magic_cookie[0])
		289	{
		290	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		291	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		292	magic_load (magic_cookie[0], 0);
		293	magic_load (magic_cookie[1], 0);
		294	}
		295
		296	perlinterp_release ();
		297
		298	RETVAL = ix & 2
		299	? magic_buffer (magic_cookie[ix & 1], data, len)
		300	: magic_file (magic_cookie[ix & 1], data);
		301
		302	perlinterp_acquire ();
		303	}
		304	OUTPUT:
		305	RETVAL
		306
		307	# missing/broken in Gtk2 perl module
		308
		309	void
		310	gdk_window_clear_hints (GdkWindow *window)
		311	CODE:
		312	gdk_window_set_geometry_hints (window, 0, 0);
		313
		314	gboolean
		315	gdk_net_wm_supports (GdkAtom property)
		316	CODE:
		317	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		318	RETVAL = gdk_net_wm_supports (property);
		319	#else
		320	RETVAL = 0;
		321	#endif
		322	OUTPUT:
		323	RETVAL
		324
106	GdkPixbuf_noinc *	325	GdkPixbuf_noinc *
107	transpose (GdkPixbuf *pb)	326	dealpha_expose (GdkPixbuf *pb)
108	CODE:	327	CODE:
		328	perlinterp_release ();
109	{	329	{
110	int w = gdk_pixbuf_get_width (pb);	330	int w = gdk_pixbuf_get_width (pb);
111	int h = gdk_pixbuf_get_height (pb);	331	int h = gdk_pixbuf_get_height (pb);
112	int bpp = gdk_pixbuf_get_n_channels (pb);	332	int bpp = gdk_pixbuf_get_n_channels (pb);
113	int x, y, i;	333	int x, y, i;
114	guchar src = gdk_pixbuf_get_pixels (pb), dst;	334	guchar src = gdk_pixbuf_get_pixels (pb), dst;
115	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	335	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
116		336
117	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	337	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
118		338
119	dst = gdk_pixbuf_get_pixels (RETVAL);	339	dst = gdk_pixbuf_get_pixels (RETVAL);
120	dstr = gdk_pixbuf_get_rowstride (RETVAL);	340	dstr = gdk_pixbuf_get_rowstride (RETVAL);
121		341
122	for (y = 0; y < h; y++)
123	for (x = 0; x < w; x++)	342	for (x = 0; x < w; x++)
		343	for (y = 0; y < h; y++)
124	for (i = 0; i < bpp; i++)	344	for (i = 0; i < 3; i++)
125	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	345	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
126	}	346	}
		347	perlinterp_acquire ();
127	OUTPUT:	348	OUTPUT:
128	RETVAL	349	RETVAL
129		350
130	GdkPixbuf_noinc *	351	GdkPixbuf_noinc *
131	flop (GdkPixbuf *pb)	352	rotate (GdkPixbuf *pb, int angle)
132	CODE:	353	CODE:
133	{	354	perlinterp_release ();
134	int w = gdk_pixbuf_get_width (pb);	355	if (angle < 0)
135	int h = gdk_pixbuf_get_height (pb);	356	angle += 360;
136	int bpp = gdk_pixbuf_get_n_channels (pb);	357	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
137	int x, y, i;	358	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
138	guchar src = gdk_pixbuf_get_pixels (pb), dst;	359	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
139	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	360	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
140		361	: angle);
141	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	362	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:	363	OUTPUT:
152	RETVAL	364	RETVAL
153		365
		366	const char *
		367	filetype (SV *image_data)
		368	CODE:
		369	{
		370	STRLEN data_len;
		371	U8 *data = SvPVbyte (image_data, data_len);
		372
		373	if (data_len >= 20
		374	&& data[0] == 0xff
		375	&& data[1] == 0xd8
		376	&& data[2] == 0xff)
		377	RETVAL = "jpg";
		378	else if (data_len >= 12
		379	&& data[ 0] == (U8)'R'
		380	&& data[ 1] == (U8)'I'
		381	&& data[ 2] == (U8)'F'
		382	&& data[ 3] == (U8)'F'
		383	&& data[ 8] == (U8)'W'
		384	&& data[ 9] == (U8)'E'
		385	&& data[10] == (U8)'B'
		386	&& data[11] == (U8)'P')
		387	RETVAL = "webp";
		388	else if (data_len >= 16
		389	&& data[ 0] == 0x89
		390	&& data[ 1] == (U8)'P'
		391	&& data[ 2] == (U8)'N'
		392	&& data[ 3] == (U8)'G'
		393	&& data[ 4] == 0x0d
		394	&& data[ 5] == 0x0a
		395	&& data[ 6] == 0x1a
		396	&& data[ 7] == 0x0a)
		397	RETVAL = "png";
		398	else
		399	RETVAL = "other";
		400	}
		401	OUTPUT:
		402	RETVAL
		403
		404	GdkPixbuf_noinc *
		405	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		406	CODE:
		407	{
		408	#if WEBP
		409	STRLEN data_size;
		410	int alpha;
		411	WebPData data;
		412	WebPDemuxer *demux;
		413	WebPIterator iter;
		414	WebPDecoderConfig config;
		415	int inw, inh;
		416
		417	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		418	data.size = data_size;
		419
		420	perlinterp_release ();
		421
		422	RETVAL = 0;
		423
		424	if (!(demux = WebPDemux (&data)))
		425	goto err_demux;
		426
		427	if (!WebPDemuxGetFrame (demux, 1, &iter))
		428	goto err_iter;
		429
		430	if (!WebPInitDecoderConfig (&config))
		431	goto err_iter;
		432
		433	config.options.use_threads = 1;
		434
		435	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		436	goto err_iter;
		437
		438	inw = config.input.width;
		439	inh = config.input.height;
		440
		441	if (thumbnail)
		442	{
		443	if (inw * ih > inh * iw)
		444	ih = (iw * inh + inw - 1) / inw;
		445	else
		446	iw = (ih * inw + inh - 1) / inh;
		447
		448	config.options.bypass_filtering = 1;
		449	config.options.no_fancy_upsampling = 1;
		450
		451	config.options.use_scaling = 1;
		452	config.options.scaled_width = iw;
		453	config.options.scaled_height = ih;
		454	}
		455	else
		456	{
		457	iw = inw;
		458	ih = inh;
		459	}
		460
		461	alpha = !!config.input.has_alpha;
		462
		463	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		464	if (!RETVAL)
		465	goto err_iter;
		466
		467	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		468	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		469	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		470	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		471	config.output.is_external_memory = 1;
		472
		473	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		474	{
		475	g_object_unref (RETVAL);
		476	RETVAL = 0;
		477	goto err_iter;
		478	}
		479
		480	err_iter:
		481	WebPDemuxReleaseIterator (&iter);
		482	err_demux:
		483	WebPDemuxDelete (demux);
		484
		485	perlinterp_acquire ();
		486	#else
		487	croak ("load_webp: webp not enabled at compile time");
		488	#endif
		489	}
		490	OUTPUT:
		491	RETVAL
		492
		493	GdkPixbuf_noinc *
		494	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		495	CODE:
		496	{
		497	struct jpeg_decompress_struct cinfo;
		498	struct jpg_err_mgr jerr;
		499	int rs;
		500	volatile GdkPixbuf *pb = 0;
		501	STRLEN data_len;
		502	guchar *data = SvPVbyte (image_data, data_len);
		503
		504	RETVAL = 0;
		505
		506	perlinterp_release ();
		507
		508	cinfo.err = jpeg_std_error (&jerr.err);
		509
		510	jerr.err.error_exit = cv_error_exit;
		511	jerr.err.output_message = cv_error_output;
		512
		513	if ((rs = setjmp (jerr.setjmp_buffer)))
		514	{
		515	jpeg_destroy_decompress (&cinfo);
		516
		517	if (pb)
		518	g_object_unref ((gpointer)pb);
		519
		520	perlinterp_acquire ();
		521	XSRETURN_UNDEF;
		522	}
		523
		524	jpeg_create_decompress (&cinfo);
		525	cv_jpeg_mem_src (&cinfo, data, data_len);
		526
		527	jpeg_read_header (&cinfo, TRUE);
		528
		529	cinfo.dct_method = JDCT_DEFAULT;
		530	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		531	cinfo.do_block_smoothing = FALSE;
		532	cinfo.out_color_space = JCS_RGB;
		533	cinfo.quantize_colors = FALSE;
		534
		535	cinfo.scale_num = 1;
		536	cinfo.scale_denom = 1;
		537
		538	jpeg_calc_output_dimensions (&cinfo);
		539
		540	if (thumbnail)
		541	{
		542	cinfo.dct_method = JDCT_FASTEST;
		543	cinfo.do_fancy_upsampling = FALSE;
		544
		545	while (cinfo.scale_denom < 8
		546	&& cinfo.output_width >= iw*4
		547	&& cinfo.output_height >= ih*4)
		548	{
		549	cinfo.scale_denom <<= 1;
		550	jpeg_calc_output_dimensions (&cinfo);
		551	}
		552	}
		553
		554	if (cinfo.output_components != 3)
		555	longjmp (jerr.setjmp_buffer, 3);
		556
		557	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		558	{
		559	cinfo.out_color_space = JCS_CMYK;
		560	cinfo.output_components = 4;
		561	}
		562
		563	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
		564	if (!RETVAL)
		565	longjmp (jerr.setjmp_buffer, 2);
		566
		567	data = gdk_pixbuf_get_pixels (RETVAL);
		568	rs = gdk_pixbuf_get_rowstride (RETVAL);
		569
		570	jpeg_start_decompress (&cinfo);
		571
		572	while (cinfo.output_scanline < cinfo.output_height)
		573	{
		574	int remaining = cinfo.output_height - cinfo.output_scanline;
		575	JSAMPROW rp[4];
		576
		577	rp [0] = data + cinfo.output_scanline * rs;
		578	rp [1] = (guchar *)rp [0] + rs;
		579	rp [2] = (guchar *)rp [1] + rs;
		580	rp [3] = (guchar *)rp [2] + rs;
		581
		582	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		583	}
		584
		585	if (cinfo.out_color_space == JCS_CMYK)
		586	{
		587	guchar end = data + cinfo.output_height rs;
		588
		589	while (data < end)
		590	{
		591	U32 c = data [0];
		592	U32 m = data [1];
		593	U32 y = data [2];
		594	U32 k = data [3];
		595
		596	if (0)
		597	if (cinfo.Adobe_transform == 2)
		598	{
		599	c ^= 0xff;
		600	m ^= 0xff;
		601	y ^= 0xff;
		602	k ^= 0xff;
		603	}
		604
		605	data [0] = (c * k + 0x80) / 0xff;
		606	data [1] = (m * k + 0x80) / 0xff;
		607	data [2] = (y * k + 0x80) / 0xff;
		608	data [3] = 0xff;
		609
		610	data += 4;
		611	}
		612	}
		613
		614	jpeg_finish_decompress (&cinfo);
		615	jpeg_destroy_decompress (&cinfo);
		616	perlinterp_acquire ();
		617	}
		618	OUTPUT:
		619	RETVAL
		620
		621	void
		622	compare (GdkPixbuf a, GdkPixbuf b)
		623	PPCODE:
		624	perlinterp_release ();
		625	{
		626	int w = gdk_pixbuf_get_width (a);
		627	int h = gdk_pixbuf_get_height (a);
		628
		629	int sa = gdk_pixbuf_get_rowstride (a);
		630	int sb = gdk_pixbuf_get_rowstride (b);
		631
		632	guchar *pa = gdk_pixbuf_get_pixels (a);
		633	guchar *pb = gdk_pixbuf_get_pixels (b);
		634
		635	int x, y;
		636
		637	assert (w == gdk_pixbuf_get_width (b));
		638	assert (h == gdk_pixbuf_get_height (b));
		639
		640	assert (gdk_pixbuf_get_n_channels (a) == 3);
		641	assert (gdk_pixbuf_get_n_channels (b) == 3);
		642
		643	double diff = 0.;
		644	int peak = 0;
		645
		646	if (w && h)
		647	for (y = 0; y < h; y++)
		648	{
		649	guchar pa_ = pa + y sa;
		650	guchar pb_ = pb + y sb;
		651
		652	for (x = 0; x < w; x++)
		653	{
		654	int d;
		655
		656	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		657	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		658	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		659	}
		660	}
		661
		662	perlinterp_acquire ();
		663
		664	EXTEND (SP, 2);
		665	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		666	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		667	}
		668
154	#############################################################################	669	#############################################################################
155		670
156	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	671	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
157		672
		673	# currently only works for filenames (octet strings)
		674
		675	SV *
		676	foldcase (SV *pathsv)
		677	PROTOTYPE: $
		678	CODE:
		679	{
		680	STRLEN plen;
		681	U8 path = (U8 )SvPV (pathsv, plen);
		682	U8 *pend = path + plen;
		683	U8 dst [plen * 6 * 3], *dstp = dst;
		684
		685	while (path < pend)
		686	{
		687	U8 ch = *path;
		688
		689	if (ch >= 'a' && ch <= 'z')
		690	dstp++ = path++;
		691	else if (ch >= 'A' && ch <= 'Z')
		692	dstp++ = path++ + ('a' - 'A');
		693	else if (ch >= '0' && ch <= '9')
		694	{
		695	STRLEN el, nl = 0;
		696	while (path >= '0' && path <= '9' && path < pend)
		697	path++, nl++;
		698
		699	for (el = nl; el < 6; el++)
		700	*dstp++ = '0';
		701
		702	memcpy (dstp, path - nl, nl);
		703	dstp += nl;
		704	}
		705	else
		706	dstp++ = path++;
		707	#if 0
		708	else
		709	{
		710	STRLEN cl;
		711	to_utf8_fold (path, dstp, &cl);
		712	dstp += cl;
		713	path += is_utf8_char (path);
		714	}
		715	#endif
		716	}
		717
		718	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		719	}
		720	OUTPUT:
		721	RETVAL
		722
158	GdkPixbuf_noinc *	723	GdkPixbuf_noinc *
159	p7_to_pb (int w, int h, guchar *src)	724	p7_to_pb (int w, int h, SV *src_sv)
		725	PROTOTYPE: @
160	CODE:	726	CODE:
161	{	727	{
162	int x, y;	728	int x, y;
163	guchar dst, d;	729	guchar dst, d;
164	int dstr;	730	int dstr;
		731	guchar src = (guchar )SvPVbyte_nolen (src_sv);
165		732
166	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	733	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
167	dst = gdk_pixbuf_get_pixels (RETVAL);	734	dst = gdk_pixbuf_get_pixels (RETVAL);
168	dstr = gdk_pixbuf_get_rowstride (RETVAL);	735	dstr = gdk_pixbuf_get_rowstride (RETVAL);
169		736
…		…
178	}	745	}
179	}	746	}
180	OUTPUT:	747	OUTPUT:
181	RETVAL	748	RETVAL
182		749
		750	#############################################################################
		751
		752	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		753
		754	void
		755	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		756	CODE:
		757	{
		758	int w = gdk_pixbuf_get_width (pb);
		759	int h = gdk_pixbuf_get_height (pb);
		760	int x, y, i;
		761	guchar *dst;
		762	int bpp = gdk_pixbuf_get_n_channels (pb);
		763	guchar *src = gdk_pixbuf_get_pixels (pb);
		764	int sstr = gdk_pixbuf_get_rowstride (pb);
		765
		766	a85_init ();
		767
		768	for (y = 0; y < h; y++)
		769	for (x = 0; x < w; x++)
		770	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		771	a85_push (fp, src [x * bpp + y * sstr + i]);
		772
		773	a85_finish (fp);
		774	}
		775
		776	void
		777	dump_binary (PerlIO fp, GdkPixbuf pb)
		778	CODE:
		779	{
		780	int w = gdk_pixbuf_get_width (pb);
		781	int h = gdk_pixbuf_get_height (pb);
		782	int x, y, i;
		783	guchar *dst;
		784	int bpp = gdk_pixbuf_get_n_channels (pb);
		785	guchar *src = gdk_pixbuf_get_pixels (pb);
		786	int sstr = gdk_pixbuf_get_rowstride (pb);
		787
		788	for (y = 0; y < h; y++)
		789	for (x = 0; x < w; x++)
		790	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		791	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		792	}
		793
		794	#############################################################################
		795
		796	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		797
183	SV *	798	SV *
184	pb_to_p7 (GdkPixbuf *pb)	799	pb_to_hv84 (GdkPixbuf *pb)
185	CODE:	800	CODE:
186	{	801	{
187	int w = gdk_pixbuf_get_width (pb);	802	int w = gdk_pixbuf_get_width (pb);
188	int h = gdk_pixbuf_get_height (pb);	803	int h = gdk_pixbuf_get_height (pb);
189	int x, y;	804	int x, y;
190	guchar *dst;	805	guchar *dst;
191	int bpp = gdk_pixbuf_get_n_channels (pb);	806	int bpp = gdk_pixbuf_get_n_channels (pb);
192	guchar *src = gdk_pixbuf_get_pixels (pb);	807	guchar *src = gdk_pixbuf_get_pixels (pb);
193	int sstr = gdk_pixbuf_get_rowstride (pb);	808	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	sv_upgrade (histsv, SVt_PV);
266	SvCUR_set (histsv, 256);
267	hist = SvPVX (histsv);
268
269	Zero (tmphist, 256, int);
270
271	while (len--)
272	++tmphist[(unsigned char)*buf++];
273
274	bigst = 1;
275	for (j = 0; j < 256; ++j)
276	if (tmphist[j] > bigst)
277	bigst = tmphist[j];
278
279	for (j = 0; j < 256; ++j)
280	hist[j] = tmphist[j] * 255 / bigst;
281
282	av_push (result, histsv);
283	}
284
285	RETVAL = newRV_noinc ((SV *)result);
286	}
287	OUTPUT:
288	RETVAL
289
290
291
292	#############################################################################
293
294	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
295
296	void
297	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
298	CODE:
299	{
300	int w = gdk_pixbuf_get_width (pb);
301	int h = gdk_pixbuf_get_height (pb);
302	int x, y, i;
303	guchar *dst;
304	int bpp = gdk_pixbuf_get_n_channels (pb);
305	guchar *src = gdk_pixbuf_get_pixels (pb);
306	int sstr = gdk_pixbuf_get_rowstride (pb);
307
308	a85_init ();
309
310	for (y = 0; y < h; y++)
311	for (x = 0; x < w; x++)
312	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
313	a85_push (fp, src [x * bpp + y * sstr + i]);
314
315	a85_finish (fp);
316	}
317
318	void
319	dump_binary (PerlIO fp, GdkPixbuf pb)
320	CODE:
321	{
322	int w = gdk_pixbuf_get_width (pb);
323	int h = gdk_pixbuf_get_height (pb);
324	int x, y, i;
325	guchar *dst;
326	int bpp = gdk_pixbuf_get_n_channels (pb);
327	guchar *src = gdk_pixbuf_get_pixels (pb);
328	int sstr = gdk_pixbuf_get_rowstride (pb);
329
330	for (y = 0; y < h; y++)
331	for (x = 0; x < w; x++)
332	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
333	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
334	}
335
336	#############################################################################
337
338	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
339
340	SV *
341	pb_to_hv84 (GdkPixbuf *pb)
342	CODE:
343	{
344	int w = gdk_pixbuf_get_width (pb);
345	int h = gdk_pixbuf_get_height (pb);
346	int x, y;
347	guchar *dst;
348	int bpp = gdk_pixbuf_get_n_channels (pb);
349	guchar *src = gdk_pixbuf_get_pixels (pb);
350	int sstr = gdk_pixbuf_get_rowstride (pb);
351		809
352	RETVAL = newSV (6 * 8 * 12 / 8);	810	RETVAL = newSV (6 * 8 * 12 / 8);
353	SvPOK_only (RETVAL);	811	SvPOK_only (RETVAL);
354	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	812	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
355		813
356	dst = SvPVX (RETVAL);	814	dst = (guchar *)SvPVX (RETVAL);
357		815
358	/* some primitive error distribution + random dithering */	816	/* some primitive error distribution + random dithering */
359		817
360	for (y = 0; y < h; y++)	818	for (y = 0; y < h; y++)
361	{	819	{
…		…
419	}	877	}
420	}	878	}
421	OUTPUT:	879	OUTPUT:
422	RETVAL	880	RETVAL
423		881
		882	#############################################################################
424		883
		884	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
425		885
		886	SV *
		887	extract_features (SV *ar)
		888	CODE:
		889	{
		890	int i;
		891	AV av, result;
		892
		893	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		894	croak ("Not an array ref as first argument to extract_features");
		895
		896	av = (AV *) SvRV (ar);
		897	result = newAV ();
		898
		899	for (i = 0; i <= av_len (av); ++i)
		900	{
		901	SV sv = av_fetch (av, i, 1);
		902	SV histsv = newSV (9 sizeof (float) + 1);
		903
		904	SvPOK_on (histsv);
		905	SvCUR_set (histsv, 9 * sizeof (float));
		906	float hist = (float )SvPVX (histsv);
		907
		908	struct feature f_h, f_s, f_v;
		909	feature_init (&f_h);
		910	feature_init (&f_s);
		911	feature_init (&f_v);
		912
		913	{
		914	STRLEN len;
		915	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		916	while (len >= 3)
		917	{
		918	unsigned int r, g, b, h, s, v;
		919	r = buf++; g = buf++; b = *buf++;
		920	rgb_to_hsv (r, g, b, &h, &s, &v);
		921
		922	feature_update_pass_1 (&f_h, h);
		923	feature_update_pass_1 (&f_s, s);
		924	feature_update_pass_1 (&f_v, v);
		925
		926	len -= 3;
		927	}
		928
		929	feature_finish_pass_1 (&f_h);
		930	feature_finish_pass_1 (&f_s);
		931	feature_finish_pass_1 (&f_v);
		932	}
		933
		934	{
		935	STRLEN len;
		936	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		937	while (len >= 3)
		938	{
		939	unsigned int r, g, b, h, s, v;
		940	r = buf++; g = buf++; b = *buf++;
		941	rgb_to_hsv (r, g, b, &h, &s, &v);
		942
		943	feature_update_pass_2 (&f_h, h);
		944	feature_update_pass_2 (&f_s, s);
		945	feature_update_pass_2 (&f_v, v);
		946
		947	len -= 3;
		948	}
		949
		950	feature_finish_pass_2 (&f_h);
		951	feature_finish_pass_2 (&f_s);
		952	feature_finish_pass_2 (&f_v);
		953	}
		954
		955	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		956	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		957	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
		958
		959	av_push (result, histsv);
		960	}
		961
		962	RETVAL = newRV_noinc ((SV *)result);
		963	}
		964	OUTPUT:
		965	RETVAL
		966

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Comparing CV/CV.xs (file contents): Revision 1.12 by root, Tue Feb 8 11:00:11 2005 UTC vs. Revision 1.55 by root, Sat Dec 23 08:05:32 2017 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.12 by root, Tue Feb 8 11:00:11 2005 UTC vs.
Revision 1.55 by root, Sat Dec 23 08:05:32 2017 UTC