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

Comparing CV/CV.xs (file contents):
Revision 1.17 by root, Wed Jul 20 06:20:36 2005 UTC vs.
Revision 1.53 by root, Sat Dec 23 05:27:04 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>
5	#include <setjmp.h>	6	#include <setjmp.h>
		7	#include <math.h>
		8
		9	#include <magic.h>
6		10
7	#include <jpeglib.h>	11	#include <jpeglib.h>
		12	#include <jerror.h>
		13
		14	#include <glib.h>
		15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
8	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
9		18
10	#include <gperl.h>	19	#include <gperl.h>
11	#include <gtk2perl.h>	20	#include <gtk2perl.h>
12		21
		22	#include <assert.h>
		23
		24	#if WEBP
		25	#include <webp/decode.h>
		26	#endif
		27
		28	#include "perlmulticore.h"
		29
13	#define IW 80 /* MUST match Schnauer.pm! */	30	#define IW 80 /* MUST match Schnauzer.pm! */
14	#define IH 60 /* MUST match Schnauer.pm! */	31	#define IH 60 /* MUST match Schnauzer.pm! */
15		32
16	#define RAND (seed = (seed + 7141) * 54773 % 134456)	33	#define RAND (seed = (seed + 7141) * 54773 % 134456)
17		34
18	#define LINELENGTH 240	35	#define LINELENGTH 240
19		36
20	#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 */
21		42
22	struct jpg_err_mgr	43	struct jpg_err_mgr
23	{	44	{
24	struct jpeg_error_mgr err;	45	struct jpeg_error_mgr err;
25	jmp_buf setjmp_buffer;	46	jmp_buf setjmp_buffer;
26	};	47	};
27		48
28	static void	49	static void
29	cv_error_exit (j_common_ptr cinfo)	50	cv_error_exit (j_common_ptr cinfo)
30	{	51	{
		52	cinfo->err->output_message (cinfo);
31	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	53	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
32	}	54	}
33		55
34	static void	56	static void
35	cv_error_output (j_common_ptr cinfo)	57	cv_error_output (j_common_ptr cinfo)
36	{	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);
37	return;	64	return;
38	}	65	}
39		66
40	static void	67	static void
41	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,
62		89
63	*h &= 255;	90	*h &= 255;
64	}	91	}
65	}	92	}
66		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
67	static guint32 a85_val;	149	static guint32 a85_val;
68	static guint a85_cnt;	150	static guint a85_cnt;
69	static guchar a85_buf[LINELENGTH], *a85_ptr;	151	static guchar a85_buf[LINELENGTH], *a85_ptr;
70		152
71	static void	153	static void
…		…
83	if (!--a85_cnt)	165	if (!--a85_cnt)
84	{	166	{
85	a85_cnt = 4;	167	a85_cnt = 4;
86	if (a85_val)	168	if (a85_val)
87	{	169	{
88	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	170	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
89	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
90	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	172	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
91	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	173	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
92	a85_ptr[0] = (a85_val ) + 33;	174	a85_ptr[0] = (a85_val ) + 33;
93		175
94	a85_ptr += 5;	176	a85_ptr += 5;
95	}	177	}
…		…
119	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	201	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
120	}	202	}
121		203
122	/////////////////////////////////////////////////////////////////////////////	204	/////////////////////////////////////////////////////////////////////////////
123		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
124	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	254	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
125		255
126	PROTOTYPES: ENABLE	256	PROTOTYPES: ENABLE
127		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
		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);
		312
		313	gboolean
		314	gdk_net_wm_supports (GdkAtom property)
		315	CODE:
		316	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		317	RETVAL = gdk_net_wm_supports (property);
		318	#else
		319	RETVAL = 0;
		320	#endif
		321	OUTPUT:
		322	RETVAL
		323
128	GdkPixbuf_noinc *	324	GdkPixbuf_noinc *
129	transpose (GdkPixbuf *pb)	325	dealpha_expose (GdkPixbuf *pb)
130	CODE:	326	CODE:
		327	perlinterp_release ();
131	{	328	{
132	int w = gdk_pixbuf_get_width (pb);	329	int w = gdk_pixbuf_get_width (pb);
133	int h = gdk_pixbuf_get_height (pb);	330	int h = gdk_pixbuf_get_height (pb);
134	int bpp = gdk_pixbuf_get_n_channels (pb);	331	int bpp = gdk_pixbuf_get_n_channels (pb);
135	int x, y, i;	332	int x, y, i;
136	guchar src = gdk_pixbuf_get_pixels (pb), dst;	333	guchar src = gdk_pixbuf_get_pixels (pb), dst;
137	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	334	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
138		335
139	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	336	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
140		337
141	dst = gdk_pixbuf_get_pixels (RETVAL);	338	dst = gdk_pixbuf_get_pixels (RETVAL);
142	dstr = gdk_pixbuf_get_rowstride (RETVAL);	339	dstr = gdk_pixbuf_get_rowstride (RETVAL);
143		340
144	for (y = 0; y < h; y++)
145	for (x = 0; x < w; x++)	341	for (x = 0; x < w; x++)
		342	for (y = 0; y < h; y++)
146	for (i = 0; i < bpp; i++)	343	for (i = 0; i < 3; i++)
147	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	344	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
148	}	345	}
		346	perlinterp_acquire ();
149	OUTPUT:	347	OUTPUT:
150	RETVAL	348	RETVAL
151		349
152	GdkPixbuf_noinc *	350	GdkPixbuf_noinc *
153	flop (GdkPixbuf *pb)	351	rotate (GdkPixbuf *pb, int angle)
154	CODE:	352	CODE:
155	{	353	perlinterp_release ();
156	int w = gdk_pixbuf_get_width (pb);	354	if (angle < 0)
157	int h = gdk_pixbuf_get_height (pb);	355	angle += 360;
158	int bpp = gdk_pixbuf_get_n_channels (pb);	356	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
159	int x, y, i;	357	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
160	guchar src = gdk_pixbuf_get_pixels (pb), dst;	358	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
161	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	359	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
162		360	: angle);
163	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	361	perlinterp_acquire ();
164
165	dst = gdk_pixbuf_get_pixels (RETVAL);
166	dstr = gdk_pixbuf_get_rowstride (RETVAL);
167
168	for (y = 0; y < h; y++)
169	for (x = 0; x < w; x++)
170	for (i = 0; i < bpp; i++)
171	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
172	}
173	OUTPUT:	362	OUTPUT:
174	RETVAL	363	RETVAL
175		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
176	GdkPixbuf_noinc *	403	GdkPixbuf_noinc *
177	load_jpeg (char *path, int thumbnail=0)	404	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		405	CODE:
		406	{
		407	#if WEBP
		408	guchar *data;
		409	STRLEN data_size;
		410	int alpha;
		411	WebPDecoderConfig config;
		412	int inw, inh;
		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
		453	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!alpha, 8, iw, ih);
		454	if (!RETVAL)
		455	goto err;
		456
		457	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		458	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (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;
		462
		463	if (WebPDecode (data, data_size, &config) != VP8_STATUS_OK)
		464	{
		465	g_object_unref (RETVAL);
		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
		475	}
		476	OUTPUT:
		477	RETVAL
		478
		479	GdkPixbuf_noinc *
		480	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
178	CODE:	481	CODE:
179	{	482	{
180	struct jpeg_decompress_struct cinfo;	483	struct jpeg_decompress_struct cinfo;
181	struct jpg_err_mgr jerr;	484	struct jpg_err_mgr jerr;
182	guchar *data;
183	int rs;	485	int rs;
184	FILE *fp;
185	volatile GdkPixbuf *pb = 0;	486	volatile GdkPixbuf *pb = 0;
		487	STRLEN data_len;
		488	guchar *data = SvPVbyte (image_data, data_len);
		489
186	RETVAL = 0;	490	RETVAL = 0;
187		491
188	if (!(fp = fopen (path, "rb")))	492	perlinterp_release ();
189	XSRETURN_UNDEF;
190		493
191	cinfo.err = jpeg_std_error (&jerr.err);	494	cinfo.err = jpeg_std_error (&jerr.err);
192		495
193	jerr.err.error_exit = cv_error_exit;	496	jerr.err.error_exit = cv_error_exit;
194	jerr.err.output_message = cv_error_output;	497	jerr.err.output_message = cv_error_output;
195		498
196	if ((rs = setjmp (jerr.setjmp_buffer)))	499	if ((rs = setjmp (jerr.setjmp_buffer)))
197	{	500	{
198	fclose (fp);
199	jpeg_destroy_decompress (&cinfo);	501	jpeg_destroy_decompress (&cinfo);
200		502
201	if (pb)	503	if (pb)
202	g_object_unref ((gpointer)pb);	504	g_object_unref ((gpointer)pb);
203		505
		506	perlinterp_acquire ();
204	XSRETURN_UNDEF;	507	XSRETURN_UNDEF;
205	}	508	}
206		509
207	jpeg_create_decompress (&cinfo);	510	jpeg_create_decompress (&cinfo);
		511	cv_jpeg_mem_src (&cinfo, data, data_len);
208		512
209	jpeg_stdio_src (&cinfo, fp);
210	jpeg_read_header (&cinfo, TRUE);	513	jpeg_read_header (&cinfo, TRUE);
211		514
212	cinfo.dct_method = JDCT_DEFAULT;	515	cinfo.dct_method = JDCT_DEFAULT;
213	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 */
214	cinfo.do_block_smoothing = FALSE;	517	cinfo.do_block_smoothing = FALSE;
…		…
224	{	527	{
225	cinfo.dct_method = JDCT_FASTEST;	528	cinfo.dct_method = JDCT_FASTEST;
226	cinfo.do_fancy_upsampling = FALSE;	529	cinfo.do_fancy_upsampling = FALSE;
227		530
228	while (cinfo.scale_denom < 8	531	while (cinfo.scale_denom < 8
229	&& (cinfo.output_width >> 1) >= IW	532	&& cinfo.output_width >= iw*4
230	&& (cinfo.output_height >> 1) >= IH)	533	&& cinfo.output_height >= ih*4)
231	{	534	{
232	cinfo.scale_denom <<= 1;	535	cinfo.scale_denom <<= 1;
233	jpeg_calc_output_dimensions (&cinfo);	536	jpeg_calc_output_dimensions (&cinfo);
234	}	537	}
235	}	538	}
236		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
237	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);
238	if (!RETVAL)	550	if (!RETVAL)
239	longjmp (jerr.setjmp_buffer, 2);	551	longjmp (jerr.setjmp_buffer, 2);
240		552
241	data = gdk_pixbuf_get_pixels (RETVAL);	553	data = gdk_pixbuf_get_pixels (RETVAL);
242	rs = gdk_pixbuf_get_rowstride (RETVAL);	554	rs = gdk_pixbuf_get_rowstride (RETVAL);
243
244	if (cinfo.output_components != 3)
245	longjmp (jerr.setjmp_buffer, 3);
246		555
247	jpeg_start_decompress (&cinfo);	556	jpeg_start_decompress (&cinfo);
248		557
249	while (cinfo.output_scanline < cinfo.output_height)	558	while (cinfo.output_scanline < cinfo.output_height)
250	{	559	{
…		…
257	rp [3] = (guchar *)rp [2] + rs;	566	rp [3] = (guchar *)rp [2] + rs;
258		567
259	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	568	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
260	}	569	}
261		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
262	jpeg_finish_decompress (&cinfo);	600	jpeg_finish_decompress (&cinfo);
263	fclose (fp);
264	jpeg_destroy_decompress (&cinfo);	601	jpeg_destroy_decompress (&cinfo);
		602	perlinterp_acquire ();
265	}	603	}
266	OUTPUT:	604	OUTPUT:
267	RETVAL	605	RETVAL
268		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
269	#############################################################################	655	#############################################################################
270		656
271	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	657	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
272		658
		659	# currently only works for filenames (octet strings)
		660
		661	SV *
		662	foldcase (SV *pathsv)
		663	PROTOTYPE: $
		664	CODE:
		665	{
		666	STRLEN plen;
		667	U8 path = (U8 )SvPV (pathsv, plen);
		668	U8 *pend = path + plen;
		669	U8 dst [plen * 6 * 3], *dstp = dst;
		670
		671	while (path < pend)
		672	{
		673	U8 ch = *path;
		674
		675	if (ch >= 'a' && ch <= 'z')
		676	dstp++ = path++;
		677	else if (ch >= 'A' && ch <= 'Z')
		678	dstp++ = path++ + ('a' - 'A');
		679	else if (ch >= '0' && ch <= '9')
		680	{
		681	STRLEN el, nl = 0;
		682	while (path >= '0' && path <= '9' && path < pend)
		683	path++, nl++;
		684
		685	for (el = nl; el < 6; el++)
		686	*dstp++ = '0';
		687
		688	memcpy (dstp, path - nl, nl);
		689	dstp += nl;
		690	}
		691	else
		692	dstp++ = path++;
		693	#if 0
		694	else
		695	{
		696	STRLEN cl;
		697	to_utf8_fold (path, dstp, &cl);
		698	dstp += cl;
		699	path += is_utf8_char (path);
		700	}
		701	#endif
		702	}
		703
		704	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		705	}
		706	OUTPUT:
		707	RETVAL
		708
273	GdkPixbuf_noinc *	709	GdkPixbuf_noinc *
274	p7_to_pb (int w, int h, guchar *src)	710	p7_to_pb (int w, int h, SV *src_sv)
		711	PROTOTYPE: @
275	CODE:	712	CODE:
276	{	713	{
277	int x, y;	714	int x, y;
278	guchar dst, d;	715	guchar dst, d;
279	int dstr;	716	int dstr;
		717	guchar src = (guchar )SvPVbyte_nolen (src_sv);
280		718
281	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	719	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
282	dst = gdk_pixbuf_get_pixels (RETVAL);	720	dst = gdk_pixbuf_get_pixels (RETVAL);
283	dstr = gdk_pixbuf_get_rowstride (RETVAL);	721	dstr = gdk_pixbuf_get_rowstride (RETVAL);
284		722
…		…
293	}	731	}
294	}	732	}
295	OUTPUT:	733	OUTPUT:
296	RETVAL	734	RETVAL
297		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
298	SV *	784	SV *
299	pb_to_p7 (GdkPixbuf *pb)	785	pb_to_hv84 (GdkPixbuf *pb)
300	CODE:	786	CODE:
301	{	787	{
302	int w = gdk_pixbuf_get_width (pb);	788	int w = gdk_pixbuf_get_width (pb);
303	int h = gdk_pixbuf_get_height (pb);	789	int h = gdk_pixbuf_get_height (pb);
304	int x, y;	790	int x, y;
305	guchar *dst;	791	guchar *dst;
306	int bpp = gdk_pixbuf_get_n_channels (pb);	792	int bpp = gdk_pixbuf_get_n_channels (pb);
307	guchar *src = gdk_pixbuf_get_pixels (pb);	793	guchar *src = gdk_pixbuf_get_pixels (pb);
308	int sstr = gdk_pixbuf_get_rowstride (pb);	794	int sstr = gdk_pixbuf_get_rowstride (pb);
309	int Er[IW], Eg[IW], Eb[IW];
310	int seed = 77;
311
312	RETVAL = newSV (w * h);
313	SvPOK_only (RETVAL);
314	SvCUR_set (RETVAL, w * h);
315
316	dst = SvPVX (RETVAL);
317
318	memset (Er, 0, sizeof (int) * IW);
319	memset (Eg, 0, sizeof (int) * IW);
320	memset (Eb, 0, sizeof (int) * IW);
321
322	/* some primitive error distribution + random dithering */
323
324	for (y = 0; y < h; y++)
325	{
326	int er = 0, eg = 0, eb = 0;
327
328	for (x = 0; x < w; x++)
329	{
330	int r, g, b;
331	guchar p = src + x bpp + y * sstr;
332
333	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
334	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
335	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
336
337	r = r > 7 ? 7 : r < 0 ? 0 : r;
338	g = g > 7 ? 7 : g < 0 ? 0 : g;
339	b = b > 3 ? 3 : b < 0 ? 0 : b;
340
341	er += p[0] - (r * 255 + 4) / 7;
342	eg += p[1] - (g * 255 + 4) / 7;
343	eb += p[2] - (b * 255 + 2) / 3;
344
345	Er[x] = er >> 1; er -= (er + 1) >> 1;
346	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
347	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
348
349	*dst++ = r << 5 \| g << 2 \| b;
350	}
351	}
352	}
353	OUTPUT:
354	RETVAL
355
356	SV *
357	make_histogram (SV *ar)
358	CODE:
359	{
360	int i;
361	AV av, result;
362
363	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
364	croak ("Not an array ref as first argument to make_histogram");
365
366	av = (AV *) SvRV (ar);
367	result = newAV ();
368
369	for (i = 0; i <= av_len (av); ++i)
370	{
371	const int HISTSIZE = 64;
372
373	int j;
374	SV sv = av_fetch (av, i, 1);
375	STRLEN len;
376	char *buf = SvPVbyte (sv, len);
377
378	int tmphist[HISTSIZE];
379	float *hist;
380
381	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
382	SvPOK_on (histsv);
383	SvCUR_set (histsv, HISTSIZE * sizeof (float));
384	hist = (float *)SvPVX (histsv);
385
386	Zero (tmphist, sizeof (tmphist), char);
387
388	for (j = len; j--; )
389	{
390	unsigned int idx
391	= ((*buf & 0xc0) >> 2)
392	\| ((*buf & 0x18) >> 1)
393	\| (*buf & 0x03);
394
395	++tmphist[idx];
396	++buf;
397	}
398
399	for (j = 0; j < HISTSIZE; ++j)
400	hist[j] = (float)tmphist[j] / (len + 1e-30);
401
402	av_push (result, histsv);
403	}
404
405	RETVAL = newRV_noinc ((SV *)result);
406	}
407	OUTPUT:
408	RETVAL
409
410	#############################################################################
411
412	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
413
414	void
415	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
416	CODE:
417	{
418	int w = gdk_pixbuf_get_width (pb);
419	int h = gdk_pixbuf_get_height (pb);
420	int x, y, i;
421	guchar *dst;
422	int bpp = gdk_pixbuf_get_n_channels (pb);
423	guchar *src = gdk_pixbuf_get_pixels (pb);
424	int sstr = gdk_pixbuf_get_rowstride (pb);
425
426	a85_init ();
427
428	for (y = 0; y < h; y++)
429	for (x = 0; x < w; x++)
430	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
431	a85_push (fp, src [x * bpp + y * sstr + i]);
432
433	a85_finish (fp);
434	}
435
436	void
437	dump_binary (PerlIO fp, GdkPixbuf pb)
438	CODE:
439	{
440	int w = gdk_pixbuf_get_width (pb);
441	int h = gdk_pixbuf_get_height (pb);
442	int x, y, i;
443	guchar *dst;
444	int bpp = gdk_pixbuf_get_n_channels (pb);
445	guchar *src = gdk_pixbuf_get_pixels (pb);
446	int sstr = gdk_pixbuf_get_rowstride (pb);
447
448	for (y = 0; y < h; y++)
449	for (x = 0; x < w; x++)
450	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
451	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
452	}
453
454	#############################################################################
455
456	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
457
458	SV *
459	pb_to_hv84 (GdkPixbuf *pb)
460	CODE:
461	{
462	int w = gdk_pixbuf_get_width (pb);
463	int h = gdk_pixbuf_get_height (pb);
464	int x, y;
465	guchar *dst;
466	int bpp = gdk_pixbuf_get_n_channels (pb);
467	guchar *src = gdk_pixbuf_get_pixels (pb);
468	int sstr = gdk_pixbuf_get_rowstride (pb);
469		795
470	RETVAL = newSV (6 * 8 * 12 / 8);	796	RETVAL = newSV (6 * 8 * 12 / 8);
471	SvPOK_only (RETVAL);	797	SvPOK_only (RETVAL);
472	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	798	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
473		799
474	dst = SvPVX (RETVAL);	800	dst = (guchar *)SvPVX (RETVAL);
475		801
476	/* some primitive error distribution + random dithering */	802	/* some primitive error distribution + random dithering */
477		803
478	for (y = 0; y < h; y++)	804	for (y = 0; y < h; y++)
479	{	805	{
…		…
537	}	863	}
538	}	864	}
539	OUTPUT:	865	OUTPUT:
540	RETVAL	866	RETVAL
541		867
		868	#############################################################################
542		869
		870	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
543		871
		872	SV *
		873	extract_features (SV *ar)
		874	CODE:
		875	{
		876	int i;
		877	AV av, result;
		878
		879	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		880	croak ("Not an array ref as first argument to extract_features");
		881
		882	av = (AV *) SvRV (ar);
		883	result = newAV ();
		884
		885	for (i = 0; i <= av_len (av); ++i)
		886	{
		887	SV sv = av_fetch (av, i, 1);
		888	SV histsv = newSV (9 sizeof (float) + 1);
		889
		890	SvPOK_on (histsv);
		891	SvCUR_set (histsv, 9 * sizeof (float));
		892	float hist = (float )SvPVX (histsv);
		893
		894	struct feature f_h, f_s, f_v;
		895	feature_init (&f_h);
		896	feature_init (&f_s);
		897	feature_init (&f_v);
		898
		899	{
		900	STRLEN len;
		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;
		944
		945	av_push (result, histsv);
		946	}
		947
		948	RETVAL = newRV_noinc ((SV *)result);
		949	}
		950	OUTPUT:
		951	RETVAL
		952

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Comparing CV/CV.xs (file contents): Revision 1.17 by root, Wed Jul 20 06:20:36 2005 UTC vs. Revision 1.53 by root, Sat Dec 23 05:27:04 2017 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.17 by root, Wed Jul 20 06:20:36 2005 UTC vs.
Revision 1.53 by root, Sat Dec 23 05:27:04 2017 UTC