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

Comparing CV/CV.xs (file contents):
Revision 1.27 by root, Sun Aug 21 02:23:52 2005 UTC vs.
Revision 1.53 by root, Sat Dec 23 05:27:04 2017 UTC

…		…
2	#include "perl.h"	2	#include "perl.h"
3	#include "XSUB.h"	3	#include "XSUB.h"
4		4
5	#include <string.h>	5	#include <string.h>
6	#include <setjmp.h>	6	#include <setjmp.h>
		7	#include <math.h>
		8
		9	#include <magic.h>
7		10
8	#include <jpeglib.h>	11	#include <jpeglib.h>
		12	#include <jerror.h>
		13
9	#include <glib.h>	14	#include <glib.h>
10	#include <gtk/gtk.h>	15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
11	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
12		18
13	#include <gperl.h>	19	#include <gperl.h>
14	#include <gtk2perl.h>	20	#include <gtk2perl.h>
15		21
		22	#include <assert.h>
		23
		24	#if WEBP
		25	#include <webp/decode.h>
		26	#endif
		27
		28	#include "perlmulticore.h"
		29
16	#define IW 80 /* MUST match Schnauer.pm! */	30	#define IW 80 /* MUST match Schnauzer.pm! */
17	#define IH 60 /* MUST match Schnauer.pm! */	31	#define IH 60 /* MUST match Schnauzer.pm! */
18		32
19	#define RAND (seed = (seed + 7141) * 54773 % 134456)	33	#define RAND (seed = (seed + 7141) * 54773 % 134456)
20		34
21	#define LINELENGTH 240	35	#define LINELENGTH 240
22		36
23	#define ELLIPSIS "\xe2\x80\xa6"	37	#define ELLIPSIS "\xe2\x80\xa6"
		38
		39	typedef char *octet_string;
		40
		41	static magic_t magic_cookie[2]; /* !mime, mime */
24		42
25	struct jpg_err_mgr	43	struct jpg_err_mgr
26	{	44	{
27	struct jpeg_error_mgr err;	45	struct jpeg_error_mgr err;
28	jmp_buf setjmp_buffer;	46	jmp_buf setjmp_buffer;
29	};	47	};
30		48
31	static void	49	static void
32	cv_error_exit (j_common_ptr cinfo)	50	cv_error_exit (j_common_ptr cinfo)
33	{	51	{
		52	cinfo->err->output_message (cinfo);
34	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	53	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
35	}	54	}
36		55
37	static void	56	static void
38	cv_error_output (j_common_ptr cinfo)	57	cv_error_output (j_common_ptr cinfo)
39	{	58	{
		59	char msg[JMSG_LENGTH_MAX];
		60
		61	cinfo->err->format_message (cinfo, msg);
		62
		63	fprintf (stderr, "JPEG decoding error: %s\n", msg);
40	return;	64	return;
41	}	65	}
42		66
43	static void	67	static void
44	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,	68	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
…		…
65		89
66	*h &= 255;	90	*h &= 255;
67	}	91	}
68	}	92	}
69		93
		94	struct feature {
		95	float v1, v2, v3; // mean, square, cube
		96	int n;
		97	};
		98
		99	static void
		100	feature_init (struct feature *f)
		101	{
		102	f->v1 = 0.;
		103	f->v2 = 0.;
		104	f->v3 = 0.;
		105	f->n = 0;
		106	}
		107
		108	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		109	// elmex ist schuld.
		110	static void
		111	feature_update_pass_1 (struct feature *f, unsigned int v)
		112	{
		113	f->v1 += v;
		114	f->n += 1;
		115	}
		116
		117	static void
		118	feature_finish_pass_1 (struct feature *f)
		119	{
		120	if (f->n < 1)
		121	return;
		122
		123	f->v1 /= f->n;
		124	}
		125
		126	static void
		127	feature_update_pass_2 (struct feature *f, unsigned int v)
		128	{
		129	float d = v - f->v1;
		130
		131	f->v2 += d * d;
		132	f->v3 += d * d * d;
		133	}
		134
		135	static void
		136	feature_finish_pass_2 (struct feature *f)
		137	{
		138	if (f->n < 1)
		139	return;
		140
		141	f->v2 /= f->n;
		142	f->v3 /= f->n;
		143
		144	f->v1 /= 255.;
		145	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		146	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		147	}
		148
70	static guint32 a85_val;	149	static guint32 a85_val;
71	static guint a85_cnt;	150	static guint a85_cnt;
72	static guchar a85_buf[LINELENGTH], *a85_ptr;	151	static guchar a85_buf[LINELENGTH], *a85_ptr;
73		152
74	static void	153	static void
…		…
86	if (!--a85_cnt)	165	if (!--a85_cnt)
87	{	166	{
88	a85_cnt = 4;	167	a85_cnt = 4;
89	if (a85_val)	168	if (a85_val)
90	{	169	{
91	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	170	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
92	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
93	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	172	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
94	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	173	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
95	a85_ptr[0] = (a85_val ) + 33;	174	a85_ptr[0] = (a85_val ) + 33;
96		175
97	a85_ptr += 5;	176	a85_ptr += 5;
98	}	177	}
…		…
122	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	201	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
123	}	202	}
124		203
125	/////////////////////////////////////////////////////////////////////////////	204	/////////////////////////////////////////////////////////////////////////////
126		205
		206	static void cv_ms_init (j_decompress_ptr cinfo)
		207	{
		208	}
		209
		210	static void cv_ms_term (j_decompress_ptr cinfo)
		211	{
		212	}
		213
		214	static boolean cv_ms_fill (j_decompress_ptr cinfo)
		215	{
		216	ERREXIT (cinfo, JERR_INPUT_EMPTY);
		217
		218	return TRUE;
		219	}
		220
		221	static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
		222	{
		223	if (num_bytes > 0)
		224	{
		225	struct jpeg_source_mgr src = (struct jpeg_source_mgr )cinfo->src;
		226
		227	src->next_input_byte += num_bytes;
		228	src->bytes_in_buffer -= num_bytes;
		229	}
		230	}
		231
		232	static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
		233	{
		234	struct jpeg_source_mgr *src;
		235
		236	if (!cinfo->src)
		237	cinfo->src = (struct jpeg_source_mgr *)
		238	(*cinfo->mem->alloc_small) (
		239	(j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
		240	);
		241
		242	src = (struct jpeg_source_mgr *)cinfo->src;
		243	src->init_source = cv_ms_init;
		244	src->fill_input_buffer = cv_ms_fill;
		245	src->skip_input_data = cv_ms_skip;
		246	src->resync_to_restart = jpeg_resync_to_restart;
		247	src->term_source = cv_ms_term;
		248	src->next_input_byte = (JOCTET *)buf;
		249	src->bytes_in_buffer = buflen;
		250	}
		251
		252	/////////////////////////////////////////////////////////////////////////////
		253
127	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	254	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128		255
129	PROTOTYPES: ENABLE	256	PROTOTYPES: ENABLE
130		257
		258	# missing function in perl. really :)
		259	int
		260	common_prefix_length (a, b)
		261	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		262	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		263	CODE:
		264	RETVAL = 0;
		265
		266	while (a == b && *a)
		267	{
		268	RETVAL += (*a & 0xc0) != 0x80;
		269	a++, b++;
		270	}
		271
		272	OUTPUT:
		273	RETVAL
		274
		275	const char *
		276	magic (SV *path_or_data)
		277	ALIAS:
		278	magic = 0
		279	magic_mime = 1
		280	magic_buffer = 2
		281	magic_buffer_mime = 3
		282	CODE:
		283	{
		284	STRLEN len;
		285	char *data = SvPVbyte (path_or_data, len);
		286
		287	if (!magic_cookie[0])
		288	{
		289	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		290	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		291	magic_load (magic_cookie[0], 0);
		292	magic_load (magic_cookie[1], 0);
		293	}
		294
		295	perlinterp_release ();
		296
		297	RETVAL = ix & 2
		298	? magic_buffer (magic_cookie[ix & 1], data, len)
		299	: magic_file (magic_cookie[ix & 1], data);
		300
		301	perlinterp_acquire ();
		302	}
		303	OUTPUT:
		304	RETVAL
		305
131	# missing in Gtk2 perl module	306	# missing/broken in Gtk2 perl module
		307
		308	void
		309	gdk_window_clear_hints (GdkWindow *window)
		310	CODE:
		311	gdk_window_set_geometry_hints (window, 0, 0);
132		312
133	gboolean	313	gboolean
134	gdk_net_wm_supports (GdkAtom property)	314	gdk_net_wm_supports (GdkAtom property)
135	CODE:	315	CODE:
136	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	316	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
142	RETVAL	322	RETVAL
143		323
144	GdkPixbuf_noinc *	324	GdkPixbuf_noinc *
145	dealpha_expose (GdkPixbuf *pb)	325	dealpha_expose (GdkPixbuf *pb)
146	CODE:	326	CODE:
		327	perlinterp_release ();
147	{	328	{
148	int w = gdk_pixbuf_get_width (pb);	329	int w = gdk_pixbuf_get_width (pb);
149	int h = gdk_pixbuf_get_height (pb);	330	int h = gdk_pixbuf_get_height (pb);
150	int bpp = gdk_pixbuf_get_n_channels (pb);	331	int bpp = gdk_pixbuf_get_n_channels (pb);
151	int x, y, i;	332	int x, y, i;
…		…
160	for (x = 0; x < w; x++)	341	for (x = 0; x < w; x++)
161	for (y = 0; y < h; y++)	342	for (y = 0; y < h; y++)
162	for (i = 0; i < 3; i++)	343	for (i = 0; i < 3; i++)
163	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];	344	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
164	}	345	}
		346	perlinterp_acquire ();
165	OUTPUT:	347	OUTPUT:
166	RETVAL	348	RETVAL
167		349
168	GdkPixbuf_noinc *	350	GdkPixbuf_noinc *
169	transpose (GdkPixbuf *pb)	351	rotate (GdkPixbuf *pb, int angle)
170	CODE:	352	CODE:
171	{	353	perlinterp_release ();
172	int w = gdk_pixbuf_get_width (pb);	354	if (angle < 0)
173	int h = gdk_pixbuf_get_height (pb);	355	angle += 360;
174	int bpp = gdk_pixbuf_get_n_channels (pb);	356	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
175	int x, y, i;	357	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
176	guchar src = gdk_pixbuf_get_pixels (pb), dst;	358	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
177	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	359	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
178		360	: angle);
179	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	361	perlinterp_acquire ();
180
181	dst = gdk_pixbuf_get_pixels (RETVAL);
182	dstr = gdk_pixbuf_get_rowstride (RETVAL);
183
184	for (y = 0; y < h; y++)
185	for (x = 0; x < w; x++)
186	for (i = 0; i < bpp; i++)
187	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];
188	}
189	OUTPUT:	362	OUTPUT:
190	RETVAL	363	RETVAL
191		364
		365	const char *
		366	filetype (SV *image_data)
		367	CODE:
		368	{
		369	STRLEN data_len;
		370	U8 *data = SvPVbyte (image_data, data_len);
		371
		372	if (data_len >= 20
		373	&& data[0] == 0xff
		374	&& data[1] == 0xd8
		375	&& data[2] == 0xff)
		376	RETVAL = "jpg";
		377	else if (data_len >= 12
		378	&& data[ 0] == (U8)'R'
		379	&& data[ 1] == (U8)'I'
		380	&& data[ 2] == (U8)'F'
		381	&& data[ 3] == (U8)'F'
		382	&& data[ 8] == (U8)'W'
		383	&& data[ 9] == (U8)'E'
		384	&& data[10] == (U8)'B'
		385	&& data[11] == (U8)'P')
		386	RETVAL = "webp";
		387	else if (data_len >= 16
		388	&& data[ 0] == 0x89
		389	&& data[ 1] == (U8)'P'
		390	&& data[ 2] == (U8)'N'
		391	&& data[ 3] == (U8)'G'
		392	&& data[ 4] == 0x0d
		393	&& data[ 5] == 0x0a
		394	&& data[ 6] == 0x1a
		395	&& data[ 7] == 0x0a)
		396	RETVAL = "png";
		397	else
		398	RETVAL = "other";
		399	}
		400	OUTPUT:
		401	RETVAL
		402
192	GdkPixbuf_noinc *	403	GdkPixbuf_noinc *
193	flop (GdkPixbuf *pb)	404	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
194	CODE:	405	CODE:
195	{	406	{
196	int w = gdk_pixbuf_get_width (pb);	407	#if WEBP
197	int h = gdk_pixbuf_get_height (pb);	408	guchar *data;
198	int bpp = gdk_pixbuf_get_n_channels (pb);	409	STRLEN data_size;
		410	int alpha;
		411	WebPDecoderConfig config;
199	int x, y, i;	412	int inw, inh;
200	guchar src = gdk_pixbuf_get_pixels (pb), dst;
201	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
202		413
		414	data = SvPVbyte (image_data, data_size);
		415
		416	perlinterp_release ();
		417
		418	RETVAL = 0;
		419
		420	if (!WebPInitDecoderConfig (&config))
		421	goto err;
		422
		423	config.options.use_threads = 1;
		424
		425	if (WebPGetFeatures (data, data_size, &config.input) != VP8_STATUS_OK)
		426	goto err;
		427
		428	inw = config.input.width;
		429	inh = config.input.height;
		430
		431	if (thumbnail)
		432	{
		433	if (inw * ih > inh * iw)
		434	ih = (iw * inh + inw - 1) / inw;
		435	else
		436	iw = (ih * inw + inh - 1) / inh;
		437
		438	config.options.bypass_filtering = 1;
		439	config.options.no_fancy_upsampling = 1;
		440
		441	config.options.use_scaling = 1;
		442	config.options.scaled_width = iw;
		443	config.options.scaled_height = ih;
		444	}
		445	else
		446	{
		447	iw = inw;
		448	ih = inh;
		449	}
		450
		451	alpha = config.input.has_alpha;
		452
203	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	453	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih);
		454	if (!RETVAL)
		455	goto err;
204		456
205	dst = gdk_pixbuf_get_pixels (RETVAL);	457	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		458	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
206	dstr = gdk_pixbuf_get_rowstride (RETVAL);	459	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		460	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		461	config.output.is_external_memory = 1;
207		462
208	for (y = 0; y < h; y++)	463	if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK)
209	for (x = 0; x < w; x++)	464	{
210	for (i = 0; i < bpp; i++)	465	g_object_unref (RETVAL);
211	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];	466	RETVAL = 0;
		467	goto err;
		468	}
		469
		470	err:
		471	perlinterp_acquire ();
		472	#else
		473	croak ("load_webp: webp not enabled at compile time");
		474	#endif
212	}	475	}
213	OUTPUT:	476	OUTPUT:
214	RETVAL	477	RETVAL
215		478
216	GdkPixbuf_noinc *	479	GdkPixbuf_noinc *
217	load_jpeg (SV *path, int thumbnail=0)	480	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
218	CODE:	481	CODE:
219	{	482	{
220	struct jpeg_decompress_struct cinfo;	483	struct jpeg_decompress_struct cinfo;
221	struct jpg_err_mgr jerr;	484	struct jpg_err_mgr jerr;
222	guchar *data;
223	int rs;	485	int rs;
224	FILE *fp;
225	volatile GdkPixbuf *pb = 0;	486	volatile GdkPixbuf *pb = 0;
226	gchar *filename;	487	STRLEN data_len;
		488	guchar *data = SvPVbyte (image_data, data_len);
227		489
228	RETVAL = 0;	490	RETVAL = 0;
229		491
230	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);	492	perlinterp_release ();
231	fp = fopen (filename, "rb");
232	g_free (filename);
233
234	if (!fp)
235	XSRETURN_UNDEF;
236		493
237	cinfo.err = jpeg_std_error (&jerr.err);	494	cinfo.err = jpeg_std_error (&jerr.err);
238		495
239	jerr.err.error_exit = cv_error_exit;	496	jerr.err.error_exit = cv_error_exit;
240	jerr.err.output_message = cv_error_output;	497	jerr.err.output_message = cv_error_output;
241		498
242	if ((rs = setjmp (jerr.setjmp_buffer)))	499	if ((rs = setjmp (jerr.setjmp_buffer)))
243	{	500	{
244	fclose (fp);
245	jpeg_destroy_decompress (&cinfo);	501	jpeg_destroy_decompress (&cinfo);
246		502
247	if (pb)	503	if (pb)
248	g_object_unref ((gpointer)pb);	504	g_object_unref ((gpointer)pb);
249		505
		506	perlinterp_acquire ();
250	XSRETURN_UNDEF;	507	XSRETURN_UNDEF;
251	}	508	}
252		509
253	jpeg_create_decompress (&cinfo);	510	jpeg_create_decompress (&cinfo);
		511	cv_jpeg_mem_src (&cinfo, data, data_len);
254		512
255	jpeg_stdio_src (&cinfo, fp);
256	jpeg_read_header (&cinfo, TRUE);	513	jpeg_read_header (&cinfo, TRUE);
257		514
258	cinfo.dct_method = JDCT_DEFAULT;	515	cinfo.dct_method = JDCT_DEFAULT;
259	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	516	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
260	cinfo.do_block_smoothing = FALSE;	517	cinfo.do_block_smoothing = FALSE;
…		…
270	{	527	{
271	cinfo.dct_method = JDCT_FASTEST;	528	cinfo.dct_method = JDCT_FASTEST;
272	cinfo.do_fancy_upsampling = FALSE;	529	cinfo.do_fancy_upsampling = FALSE;
273		530
274	while (cinfo.scale_denom < 8	531	while (cinfo.scale_denom < 8
275	&& cinfo.output_width >= IW*4	532	&& cinfo.output_width >= iw*4
276	&& cinfo.output_height >= IH*4)	533	&& cinfo.output_height >= ih*4)
277	{	534	{
278	cinfo.scale_denom <<= 1;	535	cinfo.scale_denom <<= 1;
279	jpeg_calc_output_dimensions (&cinfo);	536	jpeg_calc_output_dimensions (&cinfo);
280	}	537	}
281	}	538	}
282		539
		540	if (cinfo.output_components != 3)
		541	longjmp (jerr.setjmp_buffer, 3);
		542
		543	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		544	{
		545	cinfo.out_color_space = JCS_CMYK;
		546	cinfo.output_components = 4;
		547	}
		548
283	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	549	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
284	if (!RETVAL)	550	if (!RETVAL)
285	longjmp (jerr.setjmp_buffer, 2);	551	longjmp (jerr.setjmp_buffer, 2);
286		552
287	data = gdk_pixbuf_get_pixels (RETVAL);	553	data = gdk_pixbuf_get_pixels (RETVAL);
288	rs = gdk_pixbuf_get_rowstride (RETVAL);	554	rs = gdk_pixbuf_get_rowstride (RETVAL);
289
290	if (cinfo.output_components != 3)
291	longjmp (jerr.setjmp_buffer, 3);
292		555
293	jpeg_start_decompress (&cinfo);	556	jpeg_start_decompress (&cinfo);
294		557
295	while (cinfo.output_scanline < cinfo.output_height)	558	while (cinfo.output_scanline < cinfo.output_height)
296	{	559	{
…		…
303	rp [3] = (guchar *)rp [2] + rs;	566	rp [3] = (guchar *)rp [2] + rs;
304		567
305	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	568	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
306	}	569	}
307		570
		571	if (cinfo.out_color_space == JCS_CMYK)
		572	{
		573	guchar end = data + cinfo.output_height rs;
		574
		575	while (data < end)
		576	{
		577	U32 c = data [0];
		578	U32 m = data [1];
		579	U32 y = data [2];
		580	U32 k = data [3];
		581
		582	if (0)
		583	if (cinfo.Adobe_transform == 2)
		584	{
		585	c ^= 0xff;
		586	m ^= 0xff;
		587	y ^= 0xff;
		588	k ^= 0xff;
		589	}
		590
		591	data [0] = (c * k + 0x80) / 0xff;
		592	data [1] = (m * k + 0x80) / 0xff;
		593	data [2] = (y * k + 0x80) / 0xff;
		594	data [3] = 0xff;
		595
		596	data += 4;
		597	}
		598	}
		599
308	jpeg_finish_decompress (&cinfo);	600	jpeg_finish_decompress (&cinfo);
309	fclose (fp);
310	jpeg_destroy_decompress (&cinfo);	601	jpeg_destroy_decompress (&cinfo);
		602	perlinterp_acquire ();
311	}	603	}
312	OUTPUT:	604	OUTPUT:
313	RETVAL	605	RETVAL
314		606
		607	void
		608	compare (GdkPixbuf a, GdkPixbuf b)
		609	PPCODE:
		610	perlinterp_release ();
		611	{
		612	int w = gdk_pixbuf_get_width (a);
		613	int h = gdk_pixbuf_get_height (a);
		614
		615	int sa = gdk_pixbuf_get_rowstride (a);
		616	int sb = gdk_pixbuf_get_rowstride (b);
		617
		618	guchar *pa = gdk_pixbuf_get_pixels (a);
		619	guchar *pb = gdk_pixbuf_get_pixels (b);
		620
		621	int x, y;
		622
		623	assert (w == gdk_pixbuf_get_width (b));
		624	assert (h == gdk_pixbuf_get_height (b));
		625
		626	assert (gdk_pixbuf_get_n_channels (a) == 3);
		627	assert (gdk_pixbuf_get_n_channels (b) == 3);
		628
		629	double diff = 0.;
		630	int peak = 0;
		631
		632	if (w && h)
		633	for (y = 0; y < h; y++)
		634	{
		635	guchar pa_ = pa + y sa;
		636	guchar pb_ = pb + y sb;
		637
		638	for (x = 0; x < w; x++)
		639	{
		640	int d;
		641
		642	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		643	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		644	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		645	}
		646	}
		647
		648	perlinterp_acquire ();
		649
		650	EXTEND (SP, 2);
		651	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		652	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		653	}
		654
315	#############################################################################	655	#############################################################################
316		656
317	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	657	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		658
		659	# currently only works for filenames (octet strings)
318		660
319	SV *	661	SV *
320	foldcase (SV *pathsv)	662	foldcase (SV *pathsv)
321	PROTOTYPE: $	663	PROTOTYPE: $
322	CODE:	664	CODE:
323	{	665	{
324	STRLEN plen;	666	STRLEN plen;
325	U8 path = (U8 )SvPVutf8 (pathsv, plen);	667	U8 path = (U8 )SvPV (pathsv, plen);
326	U8 *pend = path + plen;	668	U8 *pend = path + plen;
327	U8 dst [plen * 6 * 3], *dstp = dst;	669	U8 dst [plen * 6 * 3], *dstp = dst;
328		670
329	while (path < pend)	671	while (path < pend)
330	{	672	{
331	U8 ch = *path;	673	U8 ch = *path;
332		674
333	if (ch >= 'a' && ch <= 'z')	675	if (ch >= 'a' && ch <= 'z')
334	dstp++ = path++;	676	dstp++ = path++;
		677	else if (ch >= 'A' && ch <= 'Z')
		678	dstp++ = path++ + ('a' - 'A');
335	else if (ch >= '0' && ch <= '9')	679	else if (ch >= '0' && ch <= '9')
336	{	680	{
337	STRLEN el, nl = 0;	681	STRLEN el, nl = 0;
338	while (path >= '0' && path <= '9' && path < pend)	682	while (path >= '0' && path <= '9' && path < pend)
339	path++, nl++;	683	path++, nl++;
…		…
342	*dstp++ = '0';	686	*dstp++ = '0';
343		687
344	memcpy (dstp, path - nl, nl);	688	memcpy (dstp, path - nl, nl);
345	dstp += nl;	689	dstp += nl;
346	}	690	}
		691	else
		692	dstp++ = path++;
		693	#if 0
347	else	694	else
348	{	695	{
349	STRLEN cl;	696	STRLEN cl;
350	to_utf8_fold (path, dstp, &cl);	697	to_utf8_fold (path, dstp, &cl);
351	dstp += cl;	698	dstp += cl;
352	path += is_utf8_char (path);	699	path += is_utf8_char (path);
353	}	700	}
		701	#endif
354	}	702	}
355		703
356	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	704	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
357	}	705	}
358	OUTPUT:	706	OUTPUT:
…		…
383	}	731	}
384	}	732	}
385	OUTPUT:	733	OUTPUT:
386	RETVAL	734	RETVAL
387		735
		736	#############################################################################
		737
		738	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		739
		740	void
		741	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		742	CODE:
		743	{
		744	int w = gdk_pixbuf_get_width (pb);
		745	int h = gdk_pixbuf_get_height (pb);
		746	int x, y, i;
		747	guchar *dst;
		748	int bpp = gdk_pixbuf_get_n_channels (pb);
		749	guchar *src = gdk_pixbuf_get_pixels (pb);
		750	int sstr = gdk_pixbuf_get_rowstride (pb);
		751
		752	a85_init ();
		753
		754	for (y = 0; y < h; y++)
		755	for (x = 0; x < w; x++)
		756	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		757	a85_push (fp, src [x * bpp + y * sstr + i]);
		758
		759	a85_finish (fp);
		760	}
		761
		762	void
		763	dump_binary (PerlIO fp, GdkPixbuf pb)
		764	CODE:
		765	{
		766	int w = gdk_pixbuf_get_width (pb);
		767	int h = gdk_pixbuf_get_height (pb);
		768	int x, y, i;
		769	guchar *dst;
		770	int bpp = gdk_pixbuf_get_n_channels (pb);
		771	guchar *src = gdk_pixbuf_get_pixels (pb);
		772	int sstr = gdk_pixbuf_get_rowstride (pb);
		773
		774	for (y = 0; y < h; y++)
		775	for (x = 0; x < w; x++)
		776	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		777	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		778	}
		779
		780	#############################################################################
		781
		782	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		783
388	SV *	784	SV *
389	pb_to_p7 (GdkPixbuf *pb)	785	pb_to_hv84 (GdkPixbuf *pb)
390	CODE:	786	CODE:
391	{	787	{
392	int w = gdk_pixbuf_get_width (pb);	788	int w = gdk_pixbuf_get_width (pb);
393	int h = gdk_pixbuf_get_height (pb);	789	int h = gdk_pixbuf_get_height (pb);
394	int x, y;	790	int x, y;
395	guchar *dst;	791	guchar *dst;
396	int bpp = gdk_pixbuf_get_n_channels (pb);	792	int bpp = gdk_pixbuf_get_n_channels (pb);
397	guchar *src = gdk_pixbuf_get_pixels (pb);	793	guchar *src = gdk_pixbuf_get_pixels (pb);
398	int sstr = gdk_pixbuf_get_rowstride (pb);	794	int sstr = gdk_pixbuf_get_rowstride (pb);
399	int Er[IW], Eg[IW], Eb[IW];
400	int seed = 77;
401
402	RETVAL = newSV (w * h);
403	SvPOK_only (RETVAL);
404	SvCUR_set (RETVAL, w * h);
405
406	dst = (guchar *)SvPVX (RETVAL);
407
408	memset (Er, 0, sizeof (int) * IW);
409	memset (Eg, 0, sizeof (int) * IW);
410	memset (Eb, 0, sizeof (int) * IW);
411
412	/* some primitive error distribution + random dithering */
413
414	for (y = 0; y < h; y++)
415	{
416	int er = 0, eg = 0, eb = 0;
417
418	for (x = 0; x < w; x++)
419	{
420	int r, g, b;
421	guchar p = src + x bpp + y * sstr;
422
423	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
424	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
425	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
426
427	r = r > 7 ? 7 : r < 0 ? 0 : r;
428	g = g > 7 ? 7 : g < 0 ? 0 : g;
429	b = b > 3 ? 3 : b < 0 ? 0 : b;
430
431	er += p[0] - (r * 255 + 4) / 7;
432	eg += p[1] - (g * 255 + 4) / 7;
433	eb += p[2] - (b * 255 + 2) / 3;
434
435	Er[x] = er >> 1; er -= (er + 1) >> 1;
436	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
437	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
438
439	*dst++ = r << 5 \| g << 2 \| b;
440	}
441	}
442	}
443	OUTPUT:
444	RETVAL
445
446	#############################################################################
447
448	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
449
450	void
451	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
452	CODE:
453	{
454	int w = gdk_pixbuf_get_width (pb);
455	int h = gdk_pixbuf_get_height (pb);
456	int x, y, i;
457	guchar *dst;
458	int bpp = gdk_pixbuf_get_n_channels (pb);
459	guchar *src = gdk_pixbuf_get_pixels (pb);
460	int sstr = gdk_pixbuf_get_rowstride (pb);
461
462	a85_init ();
463
464	for (y = 0; y < h; y++)
465	for (x = 0; x < w; x++)
466	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
467	a85_push (fp, src [x * bpp + y * sstr + i]);
468
469	a85_finish (fp);
470	}
471
472	void
473	dump_binary (PerlIO fp, GdkPixbuf pb)
474	CODE:
475	{
476	int w = gdk_pixbuf_get_width (pb);
477	int h = gdk_pixbuf_get_height (pb);
478	int x, y, i;
479	guchar *dst;
480	int bpp = gdk_pixbuf_get_n_channels (pb);
481	guchar *src = gdk_pixbuf_get_pixels (pb);
482	int sstr = gdk_pixbuf_get_rowstride (pb);
483
484	for (y = 0; y < h; y++)
485	for (x = 0; x < w; x++)
486	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
487	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
488	}
489
490	#############################################################################
491
492	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
493
494	SV *
495	pb_to_hv84 (GdkPixbuf *pb)
496	CODE:
497	{
498	int w = gdk_pixbuf_get_width (pb);
499	int h = gdk_pixbuf_get_height (pb);
500	int x, y;
501	guchar *dst;
502	int bpp = gdk_pixbuf_get_n_channels (pb);
503	guchar *src = gdk_pixbuf_get_pixels (pb);
504	int sstr = gdk_pixbuf_get_rowstride (pb);
505		795
506	RETVAL = newSV (6 * 8 * 12 / 8);	796	RETVAL = newSV (6 * 8 * 12 / 8);
507	SvPOK_only (RETVAL);	797	SvPOK_only (RETVAL);
508	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	798	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
509		799
…		…
578	#############################################################################	868	#############################################################################
579		869
580	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	870	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
581		871
582	SV *	872	SV *
583	make_histograms (SV *ar)	873	extract_features (SV *ar)
584	CODE:	874	CODE:
585	{	875	{
586	int i;	876	int i;
587	AV av, result;	877	AV av, result;
588		878
589	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	879	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
590	croak ("Not an array ref as first argument to make_histogram");	880	croak ("Not an array ref as first argument to extract_features");
591		881
592	av = (AV *) SvRV (ar);	882	av = (AV *) SvRV (ar);
593	result = newAV ();	883	result = newAV ();
594		884
595	for (i = 0; i <= av_len (av); ++i)	885	for (i = 0; i <= av_len (av); ++i)
596	{	886	{
597	const int HISTSIZE = 64;
598
599	int j;
600	SV sv = av_fetch (av, i, 1);	887	SV sv = av_fetch (av, i, 1);
601	STRLEN len;
602	char *buf = SvPVbyte (sv, len);
603
604	int tmphist[HISTSIZE];
605	float *hist;
606
607	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	888	SV histsv = newSV (9 sizeof (float) + 1);
		889
608	SvPOK_on (histsv);	890	SvPOK_on (histsv);
609	SvCUR_set (histsv, HISTSIZE * sizeof (float));	891	SvCUR_set (histsv, 9 * sizeof (float));
610	hist = (float *)SvPVX (histsv);	892	float hist = (float )SvPVX (histsv);
611		893
612	Zero (tmphist, sizeof (tmphist), char);	894	struct feature f_h, f_s, f_v;
		895	feature_init (&f_h);
		896	feature_init (&f_s);
		897	feature_init (&f_v);
613		898
614	for (j = len; j--; )
615	{
616	unsigned int idx
617	= ((*buf & 0xc0) >> 2)
618	\| ((*buf & 0x18) >> 1)
619	\| (*buf & 0x03);
620
621	++tmphist[idx];
622	++buf;
623	}
624		899	{
625	for (j = 0; j < HISTSIZE; ++j)	900	STRLEN len;
626	hist[j] = (float)tmphist[j] / (len + 1e-30);	901	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		902	while (len >= 3)
		903	{
		904	unsigned int r, g, b, h, s, v;
		905	r = buf++; g = buf++; b = *buf++;
		906	rgb_to_hsv (r, g, b, &h, &s, &v);
		907
		908	feature_update_pass_1 (&f_h, h);
		909	feature_update_pass_1 (&f_s, s);
		910	feature_update_pass_1 (&f_v, v);
		911
		912	len -= 3;
		913	}
		914
		915	feature_finish_pass_1 (&f_h);
		916	feature_finish_pass_1 (&f_s);
		917	feature_finish_pass_1 (&f_v);
		918	}
		919
		920	{
		921	STRLEN len;
		922	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		923	while (len >= 3)
		924	{
		925	unsigned int r, g, b, h, s, v;
		926	r = buf++; g = buf++; b = *buf++;
		927	rgb_to_hsv (r, g, b, &h, &s, &v);
		928
		929	feature_update_pass_2 (&f_h, h);
		930	feature_update_pass_2 (&f_s, s);
		931	feature_update_pass_2 (&f_v, v);
		932
		933	len -= 3;
		934	}
		935
		936	feature_finish_pass_2 (&f_h);
		937	feature_finish_pass_2 (&f_s);
		938	feature_finish_pass_2 (&f_v);
		939	}
		940
		941	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		942	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		943	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
627		944
628	av_push (result, histsv);	945	av_push (result, histsv);
629	}	946	}
630		947
631	RETVAL = newRV_noinc ((SV *)result);	948	RETVAL = newRV_noinc ((SV *)result);
632	}	949	}
633	OUTPUT:	950	OUTPUT:
634	RETVAL	951	RETVAL
635		952
636

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing CV/CV.xs (file contents): Revision 1.27 by root, Sun Aug 21 02:23:52 2005 UTC vs. Revision 1.53 by root, Sat Dec 23 05:27:04 2017 UTC

Diff Legend

Comparing CV/CV.xs (file contents):
Revision 1.27 by root, Sun Aug 21 02:23:52 2005 UTC vs.
Revision 1.53 by root, Sat Dec 23 05:27:04 2017 UTC