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

Comparing CV/CV.xs (file contents):
Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs.
Revision 1.56 by root, Wed Dec 27 17:48:16 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
		14	#include <glib.h>
		15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
9	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
10		18
11	#include <gperl.h>	19	#include <gperl.h>
12	#include <gtk2perl.h>	20	#include <gtk2perl.h>
13		21
		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
14	#define IW 80 /* MUST match Schnauer.pm! */	31	#define IW 80 /* MUST match Schnauzer.pm! */
15	#define IH 60 /* MUST match Schnauer.pm! */	32	#define IH 60 /* MUST match Schnauzer.pm! */
16		33
17	#define RAND (seed = (seed + 7141) * 54773 % 134456)	34	#define RAND (seed = (seed + 7141) * 54773 % 134456)
18		35
19	#define LINELENGTH 240	36	#define LINELENGTH 240
20		37
21	#define ELLIPSIS "\xe2\x80\xa6"	38	#define ELLIPSIS "\xe2\x80\xa6"
		39
		40	typedef char *octet_string;
		41
		42	static magic_t magic_cookie[2]; /* !mime, mime */
22		43
23	struct jpg_err_mgr	44	struct jpg_err_mgr
24	{	45	{
25	struct jpeg_error_mgr err;	46	struct jpeg_error_mgr err;
26	jmp_buf setjmp_buffer;	47	jmp_buf setjmp_buffer;
27	};	48	};
28		49
29	static void	50	static void
30	cv_error_exit (j_common_ptr cinfo)	51	cv_error_exit (j_common_ptr cinfo)
31	{	52	{
		53	cinfo->err->output_message (cinfo);
32	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	54	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
33	}	55	}
34		56
35	static void	57	static void
36	cv_error_output (j_common_ptr cinfo)	58	cv_error_output (j_common_ptr cinfo)
37	{	59	{
		60	char msg[JMSG_LENGTH_MAX];
		61
		62	cinfo->err->format_message (cinfo, msg);
		63
		64	fprintf (stderr, "JPEG decoding error: %s\n", msg);
38	return;	65	return;
39	}	66	}
40		67
41	static void	68	static void
42	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,
…		…
63		90
64	*h &= 255;	91	*h &= 255;
65	}	92	}
66	}	93	}
67		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
68	static guint32 a85_val;	150	static guint32 a85_val;
69	static guint a85_cnt;	151	static guint a85_cnt;
70	static guchar a85_buf[LINELENGTH], *a85_ptr;	152	static guchar a85_buf[LINELENGTH], *a85_ptr;
71		153
72	static void	154	static void
…		…
84	if (!--a85_cnt)	166	if (!--a85_cnt)
85	{	167	{
86	a85_cnt = 4;	168	a85_cnt = 4;
87	if (a85_val)	169	if (a85_val)
88	{	170	{
89	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
90	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	172	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
91	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	173	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
92	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
93	a85_ptr[0] = (a85_val ) + 33;	175	a85_ptr[0] = (a85_val ) + 33;
94		176
95	a85_ptr += 5;	177	a85_ptr += 5;
96	}	178	}
…		…
119		201
120	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	202	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
121	}	203	}
122		204
123	/////////////////////////////////////////////////////////////////////////////	205	/////////////////////////////////////////////////////////////////////////////
		206	// memory source for libjpeg
		207
		208	static void cv_ms_init (j_decompress_ptr cinfo)
		209	{
		210	}
		211
		212	static void cv_ms_term (j_decompress_ptr cinfo)
		213	{
		214	}
		215
		216	static boolean cv_ms_fill (j_decompress_ptr cinfo)
		217	{
		218	ERREXIT (cinfo, JERR_INPUT_EMPTY);
		219
		220	return TRUE;
		221	}
		222
		223	static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
		224	{
		225	if (num_bytes > 0)
		226	{
		227	struct jpeg_source_mgr src = (struct jpeg_source_mgr )cinfo->src;
		228
		229	src->next_input_byte += num_bytes;
		230	src->bytes_in_buffer -= num_bytes;
		231	}
		232	}
		233
		234	static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
		235	{
		236	struct jpeg_source_mgr *src;
		237
		238	if (!cinfo->src)
		239	cinfo->src = (struct jpeg_source_mgr *)
		240	(*cinfo->mem->alloc_small) (
		241	(j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
		242	);
		243
		244	src = (struct jpeg_source_mgr *)cinfo->src;
		245	src->init_source = cv_ms_init;
		246	src->fill_input_buffer = cv_ms_fill;
		247	src->skip_input_data = cv_ms_skip;
		248	src->resync_to_restart = jpeg_resync_to_restart;
		249	src->term_source = cv_ms_term;
		250	src->next_input_byte = (JOCTET *)buf;
		251	src->bytes_in_buffer = buflen;
		252	}
		253
		254	/////////////////////////////////////////////////////////////////////////////
124		255
125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	256	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
126		257
127	PROTOTYPES: ENABLE	258	PROTOTYPES: ENABLE
128		259
		260	# calculate the common prefix length of two strings
		261	# missing function in perl. really :)
		262	int
		263	common_prefix_length (a, b)
		264	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		265	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		266	CODE:
		267	RETVAL = 0;
		268
		269	while (a == b && *a)
		270	{
		271	RETVAL += (*a & 0xc0) != 0x80;
		272	a++, b++;
		273	}
		274
		275	OUTPUT:
		276	RETVAL
		277
		278	const char *
		279	magic (SV *path_or_data)
		280	ALIAS:
		281	magic = 0
		282	magic_mime = 1
		283	magic_buffer = 2
		284	magic_buffer_mime = 3
		285	CODE:
		286	{
		287	STRLEN len;
		288	char *data = SvPVbyte (path_or_data, len);
		289
		290	if (!magic_cookie[0])
		291	{
		292	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		293	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		294	magic_load (magic_cookie[0], 0);
		295	magic_load (magic_cookie[1], 0);
		296	}
		297
		298	perlinterp_release ();
		299
		300	RETVAL = ix & 2
		301	? magic_buffer (magic_cookie[ix & 1], data, len)
		302	: magic_file (magic_cookie[ix & 1], data);
		303
		304	perlinterp_acquire ();
		305	}
		306	OUTPUT:
		307	RETVAL
		308
129	# missing in Gtk2 perl module	309	# missing/broken in Gtk2 perl module
		310
		311	void
		312	gdk_window_clear_hints (GdkWindow *window)
		313	CODE:
		314	gdk_window_set_geometry_hints (window, 0, 0);
130		315
131	gboolean	316	gboolean
132	gdk_net_wm_supports (GdkAtom property)	317	gdk_net_wm_supports (GdkAtom property)
133	CODE:	318	CODE:
134	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	319	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
138	#endif	323	#endif
139	OUTPUT:	324	OUTPUT:
140	RETVAL	325	RETVAL
141		326
142	GdkPixbuf_noinc *	327	GdkPixbuf_noinc *
143	transpose (GdkPixbuf *pb)	328	dealpha_expose (GdkPixbuf *pb)
144	CODE:	329	CODE:
		330	perlinterp_release ();
145	{	331	{
146	int w = gdk_pixbuf_get_width (pb);	332	int w = gdk_pixbuf_get_width (pb);
147	int h = gdk_pixbuf_get_height (pb);	333	int h = gdk_pixbuf_get_height (pb);
148	int bpp = gdk_pixbuf_get_n_channels (pb);	334	int bpp = gdk_pixbuf_get_n_channels (pb);
149	int x, y, i;	335	int x, y, i;
150	guchar src = gdk_pixbuf_get_pixels (pb), dst;	336	guchar src = gdk_pixbuf_get_pixels (pb), dst;
151	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	337	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
152		338
153	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	339	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
154		340
155	dst = gdk_pixbuf_get_pixels (RETVAL);	341	dst = gdk_pixbuf_get_pixels (RETVAL);
156	dstr = gdk_pixbuf_get_rowstride (RETVAL);	342	dstr = gdk_pixbuf_get_rowstride (RETVAL);
157		343
158	for (y = 0; y < h; y++)
159	for (x = 0; x < w; x++)	344	for (x = 0; x < w; x++)
		345	for (y = 0; y < h; y++)
160	for (i = 0; i < bpp; i++)	346	for (i = 0; i < 3; i++)
161	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	347	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
162	}	348	}
		349	perlinterp_acquire ();
163	OUTPUT:	350	OUTPUT:
164	RETVAL	351	RETVAL
165		352
166	GdkPixbuf_noinc *	353	GdkPixbuf_noinc *
167	flop (GdkPixbuf *pb)	354	rotate (GdkPixbuf *pb, int angle)
168	CODE:	355	CODE:
169	{	356	perlinterp_release ();
170	int w = gdk_pixbuf_get_width (pb);	357	if (angle < 0)
171	int h = gdk_pixbuf_get_height (pb);	358	angle += 360;
172	int bpp = gdk_pixbuf_get_n_channels (pb);	359	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
173	int x, y, i;	360	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
174	guchar src = gdk_pixbuf_get_pixels (pb), dst;	361	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
175	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	362	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
176		363	: angle);
177	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	364	perlinterp_acquire ();
178
179	dst = gdk_pixbuf_get_pixels (RETVAL);
180	dstr = gdk_pixbuf_get_rowstride (RETVAL);
181
182	for (y = 0; y < h; y++)
183	for (x = 0; x < w; x++)
184	for (i = 0; i < bpp; i++)
185	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
186	}
187	OUTPUT:	365	OUTPUT:
188	RETVAL	366	RETVAL
189		367
		368	const char *
		369	filetype (SV *image_data)
		370	CODE:
		371	{
		372	STRLEN data_len;
		373	U8 *data = SvPVbyte (image_data, data_len);
		374
		375	if (data_len >= 20
		376	&& data[0] == 0xff
		377	&& data[1] == 0xd8
		378	&& data[2] == 0xff)
		379	RETVAL = "jpg";
		380	else if (data_len >= 12
		381	&& data[ 0] == (U8)'R'
		382	&& data[ 1] == (U8)'I'
		383	&& data[ 2] == (U8)'F'
		384	&& data[ 3] == (U8)'F'
		385	&& data[ 8] == (U8)'W'
		386	&& data[ 9] == (U8)'E'
		387	&& data[10] == (U8)'B'
		388	&& data[11] == (U8)'P')
		389	RETVAL = "webp";
		390	else if (data_len >= 16
		391	&& data[ 0] == 0x89
		392	&& data[ 1] == (U8)'P'
		393	&& data[ 2] == (U8)'N'
		394	&& data[ 3] == (U8)'G'
		395	&& data[ 4] == 0x0d
		396	&& data[ 5] == 0x0a
		397	&& data[ 6] == 0x1a
		398	&& data[ 7] == 0x0a)
		399	RETVAL = "png";
		400	else
		401	RETVAL = "other";
		402	}
		403	OUTPUT:
		404	RETVAL
		405
190	GdkPixbuf_noinc *	406	GdkPixbuf_noinc *
191	load_jpeg (char *path, int thumbnail=0)	407	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		408	CODE:
		409	{
		410	#if WEBP
		411	STRLEN data_size;
		412	int alpha;
		413	WebPData data;
		414	WebPDemuxer *demux;
		415	WebPIterator iter;
		416	WebPDecoderConfig config;
		417	int inw, inh;
		418
		419	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		420	data.size = data_size;
		421
		422	perlinterp_release ();
		423
		424	RETVAL = 0;
		425
		426	if (!(demux = WebPDemux (&data)))
		427	goto err_demux;
		428
		429	if (!WebPDemuxGetFrame (demux, 1, &iter))
		430	goto err_iter;
		431
		432	if (!WebPInitDecoderConfig (&config))
		433	goto err_iter;
		434
		435	config.options.use_threads = 1;
		436
		437	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		438	goto err_iter;
		439
		440	inw = config.input.width;
		441	inh = config.input.height;
		442
		443	if (thumbnail)
		444	{
		445	if (inw * ih > inh * iw)
		446	ih = (iw * inh + inw - 1) / inw;
		447	else
		448	iw = (ih * inw + inh - 1) / inh;
		449
		450	config.options.bypass_filtering = 1;
		451	config.options.no_fancy_upsampling = 1;
		452
		453	config.options.use_scaling = 1;
		454	config.options.scaled_width = iw;
		455	config.options.scaled_height = ih;
		456	}
		457	else
		458	{
		459	iw = inw;
		460	ih = inh;
		461	}
		462
		463	alpha = !!config.input.has_alpha;
		464
		465	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		466	if (!RETVAL)
		467	goto err_iter;
		468
		469	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		470	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		471	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		472	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		473	config.output.is_external_memory = 1;
		474
		475	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		476	{
		477	g_object_unref (RETVAL);
		478	RETVAL = 0;
		479	goto err_iter;
		480	}
		481
		482	err_iter:
		483	WebPDemuxReleaseIterator (&iter);
		484	err_demux:
		485	WebPDemuxDelete (demux);
		486
		487	perlinterp_acquire ();
		488	#else
		489	croak ("load_webp: webp not enabled at compile time");
		490	#endif
		491	}
		492	OUTPUT:
		493	RETVAL
		494
		495	GdkPixbuf_noinc *
		496	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
192	CODE:	497	CODE:
193	{	498	{
194	struct jpeg_decompress_struct cinfo;	499	struct jpeg_decompress_struct cinfo;
195	struct jpg_err_mgr jerr;	500	struct jpg_err_mgr jerr;
196	guchar *data;
197	int rs;	501	int rs;
198	FILE *fp;
199	volatile GdkPixbuf *pb = 0;	502	volatile GdkPixbuf *pb = 0;
		503	STRLEN data_len;
		504	guchar *data = SvPVbyte (image_data, data_len);
		505
200	RETVAL = 0;	506	RETVAL = 0;
201		507
202	if (!(fp = fopen (path, "rb")))	508	perlinterp_release ();
203	XSRETURN_UNDEF;
204		509
205	cinfo.err = jpeg_std_error (&jerr.err);	510	cinfo.err = jpeg_std_error (&jerr.err);
206		511
207	jerr.err.error_exit = cv_error_exit;	512	jerr.err.error_exit = cv_error_exit;
208	jerr.err.output_message = cv_error_output;	513	jerr.err.output_message = cv_error_output;
209		514
210	if ((rs = setjmp (jerr.setjmp_buffer)))	515	if ((rs = setjmp (jerr.setjmp_buffer)))
211	{	516	{
212	fclose (fp);
213	jpeg_destroy_decompress (&cinfo);	517	jpeg_destroy_decompress (&cinfo);
214		518
215	if (pb)	519	if (pb)
216	g_object_unref ((gpointer)pb);	520	g_object_unref ((gpointer)pb);
217		521
		522	perlinterp_acquire ();
218	XSRETURN_UNDEF;	523	XSRETURN_UNDEF;
219	}	524	}
220		525
221	jpeg_create_decompress (&cinfo);	526	jpeg_create_decompress (&cinfo);
		527	cv_jpeg_mem_src (&cinfo, data, data_len);
222		528
223	jpeg_stdio_src (&cinfo, fp);
224	jpeg_read_header (&cinfo, TRUE);	529	jpeg_read_header (&cinfo, TRUE);
225		530
226	cinfo.dct_method = JDCT_DEFAULT;	531	cinfo.dct_method = JDCT_DEFAULT;
227	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	532	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
228	cinfo.do_block_smoothing = FALSE;	533	cinfo.do_block_smoothing = FALSE;
…		…
238	{	543	{
239	cinfo.dct_method = JDCT_FASTEST;	544	cinfo.dct_method = JDCT_FASTEST;
240	cinfo.do_fancy_upsampling = FALSE;	545	cinfo.do_fancy_upsampling = FALSE;
241		546
242	while (cinfo.scale_denom < 8	547	while (cinfo.scale_denom < 8
243	&& cinfo.output_width >= IW*4	548	&& cinfo.output_width >= iw*4
244	&& cinfo.output_height >= IH*4)	549	&& cinfo.output_height >= ih*4)
245	{	550	{
246	cinfo.scale_denom <<= 1;	551	cinfo.scale_denom <<= 1;
247	jpeg_calc_output_dimensions (&cinfo);	552	jpeg_calc_output_dimensions (&cinfo);
248	}	553	}
249	}	554	}
250		555
		556	if (cinfo.output_components != 3)
		557	longjmp (jerr.setjmp_buffer, 3);
		558
		559	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		560	{
		561	cinfo.out_color_space = JCS_CMYK;
		562	cinfo.output_components = 4;
		563	}
		564
251	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	565	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
252	if (!RETVAL)	566	if (!RETVAL)
253	longjmp (jerr.setjmp_buffer, 2);	567	longjmp (jerr.setjmp_buffer, 2);
254		568
255	data = gdk_pixbuf_get_pixels (RETVAL);	569	data = gdk_pixbuf_get_pixels (RETVAL);
256	rs = gdk_pixbuf_get_rowstride (RETVAL);	570	rs = gdk_pixbuf_get_rowstride (RETVAL);
257
258	if (cinfo.output_components != 3)
259	longjmp (jerr.setjmp_buffer, 3);
260		571
261	jpeg_start_decompress (&cinfo);	572	jpeg_start_decompress (&cinfo);
262		573
263	while (cinfo.output_scanline < cinfo.output_height)	574	while (cinfo.output_scanline < cinfo.output_height)
264	{	575	{
…		…
271	rp [3] = (guchar *)rp [2] + rs;	582	rp [3] = (guchar *)rp [2] + rs;
272		583
273	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	584	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
274	}	585	}
275		586
		587	if (cinfo.out_color_space == JCS_CMYK)
		588	{
		589	guchar end = data + cinfo.output_height rs;
		590
		591	while (data < end)
		592	{
		593	U32 c = data [0];
		594	U32 m = data [1];
		595	U32 y = data [2];
		596	U32 k = data [3];
		597
		598	if (0)
		599	if (cinfo.Adobe_transform == 2)
		600	{
		601	c ^= 0xff;
		602	m ^= 0xff;
		603	y ^= 0xff;
		604	k ^= 0xff;
		605	}
		606
		607	data [0] = (c * k + 0x80) / 0xff;
		608	data [1] = (m * k + 0x80) / 0xff;
		609	data [2] = (y * k + 0x80) / 0xff;
		610	data [3] = 0xff;
		611
		612	data += 4;
		613	}
		614	}
		615
276	jpeg_finish_decompress (&cinfo);	616	jpeg_finish_decompress (&cinfo);
277	fclose (fp);
278	jpeg_destroy_decompress (&cinfo);	617	jpeg_destroy_decompress (&cinfo);
		618	perlinterp_acquire ();
279	}	619	}
280	OUTPUT:	620	OUTPUT:
281	RETVAL	621	RETVAL
282		622
		623	void
		624	compare (GdkPixbuf a, GdkPixbuf b)
		625	PPCODE:
		626	perlinterp_release ();
		627	{
		628	int w = gdk_pixbuf_get_width (a);
		629	int h = gdk_pixbuf_get_height (a);
		630
		631	int sa = gdk_pixbuf_get_rowstride (a);
		632	int sb = gdk_pixbuf_get_rowstride (b);
		633
		634	guchar *pa = gdk_pixbuf_get_pixels (a);
		635	guchar *pb = gdk_pixbuf_get_pixels (b);
		636
		637	int x, y;
		638
		639	assert (w == gdk_pixbuf_get_width (b));
		640	assert (h == gdk_pixbuf_get_height (b));
		641
		642	assert (gdk_pixbuf_get_n_channels (a) == 3);
		643	assert (gdk_pixbuf_get_n_channels (b) == 3);
		644
		645	double diff = 0.;
		646	int peak = 0;
		647
		648	if (w && h)
		649	for (y = 0; y < h; y++)
		650	{
		651	guchar pa_ = pa + y sa;
		652	guchar pb_ = pb + y sb;
		653
		654	for (x = 0; x < w; x++)
		655	{
		656	int d;
		657
		658	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		659	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		660	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		661	}
		662	}
		663
		664	perlinterp_acquire ();
		665
		666	EXTEND (SP, 2);
		667	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		668	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		669	}
		670
283	#############################################################################	671	#############################################################################
284		672
285	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	673	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		674
		675	# currently only works for filenames (octet strings)
286		676
287	SV *	677	SV *
288	foldcase (SV *pathsv)	678	foldcase (SV *pathsv)
289	PROTOTYPE: $	679	PROTOTYPE: $
290	CODE:	680	CODE:
291	{	681	{
292	STRLEN plen;	682	STRLEN plen;
293	U8 *path = SvPVutf8 (pathsv, plen);	683	U8 path = (U8 )SvPV (pathsv, plen);
294	U8 *pend = path + plen;	684	U8 *pend = path + plen;
295	U8 dst [plen * 6 * 3], *dstp = dst;	685	U8 dst [plen * 6 * 3], *dstp = dst;
296		686
297	while (path < pend)	687	while (path < pend)
298	{	688	{
299	U8 ch = *path;	689	U8 ch = *path;
300		690
301	if (ch >= 'a' && ch <= 'z')	691	if (ch >= 'a' && ch <= 'z')
302	dstp++ = path++;	692	dstp++ = path++;
		693	else if (ch >= 'A' && ch <= 'Z')
		694	dstp++ = path++ + ('a' - 'A');
303	else if (ch >= '0' && ch <= '9')	695	else if (ch >= '0' && ch <= '9')
304	{	696	{
305	STRLEN el, nl = 0;	697	STRLEN el, nl = 0;
306	while (path >= '0' && path <= '9' && path < pend)	698	while (path >= '0' && path <= '9' && path < pend)
307	path++, nl++;	699	path++, nl++;
…		…
310	*dstp++ = '0';	702	*dstp++ = '0';
311		703
312	memcpy (dstp, path - nl, nl);	704	memcpy (dstp, path - nl, nl);
313	dstp += nl;	705	dstp += nl;
314	}	706	}
		707	else
		708	dstp++ = path++;
		709	#if 0
315	else	710	else
316	{	711	{
317	STRLEN cl;	712	STRLEN cl;
318	to_utf8_fold (path, dstp, &cl);	713	to_utf8_fold (path, dstp, &cl);
319	dstp += cl;	714	dstp += cl;
320	path += is_utf8_char (path);	715	path += is_utf8_char (path);
321	}	716	}
		717	#endif
322	}	718	}
323		719
324	RETVAL = newSVpvn (dst, dstp - dst);	720	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
325	}	721	}
326	OUTPUT:	722	OUTPUT:
327	RETVAL	723	RETVAL
328		724
329	GdkPixbuf_noinc *	725	GdkPixbuf_noinc *
330	p7_to_pb (int w, int h, guchar *src)	726	p7_to_pb (int w, int h, SV *src_sv)
331	PROTOTYPE: @	727	PROTOTYPE: @
332	CODE:	728	CODE:
333	{	729	{
334	int x, y;	730	int x, y;
335	guchar dst, d;	731	guchar dst, d;
336	int dstr;	732	int dstr;
		733	guchar src = (guchar )SvPVbyte_nolen (src_sv);
337		734
338	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	735	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
339	dst = gdk_pixbuf_get_pixels (RETVAL);	736	dst = gdk_pixbuf_get_pixels (RETVAL);
340	dstr = gdk_pixbuf_get_rowstride (RETVAL);	737	dstr = gdk_pixbuf_get_rowstride (RETVAL);
341		738
…		…
350	}	747	}
351	}	748	}
352	OUTPUT:	749	OUTPUT:
353	RETVAL	750	RETVAL
354		751
		752	#############################################################################
		753
		754	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		755
		756	void
		757	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		758	CODE:
		759	{
		760	int w = gdk_pixbuf_get_width (pb);
		761	int h = gdk_pixbuf_get_height (pb);
		762	int x, y, i;
		763	guchar *dst;
		764	int bpp = gdk_pixbuf_get_n_channels (pb);
		765	guchar *src = gdk_pixbuf_get_pixels (pb);
		766	int sstr = gdk_pixbuf_get_rowstride (pb);
		767
		768	a85_init ();
		769
		770	for (y = 0; y < h; y++)
		771	for (x = 0; x < w; x++)
		772	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		773	a85_push (fp, src [x * bpp + y * sstr + i]);
		774
		775	a85_finish (fp);
		776	}
		777
		778	void
		779	dump_binary (PerlIO fp, GdkPixbuf pb)
		780	CODE:
		781	{
		782	int w = gdk_pixbuf_get_width (pb);
		783	int h = gdk_pixbuf_get_height (pb);
		784	int x, y, i;
		785	guchar *dst;
		786	int bpp = gdk_pixbuf_get_n_channels (pb);
		787	guchar *src = gdk_pixbuf_get_pixels (pb);
		788	int sstr = gdk_pixbuf_get_rowstride (pb);
		789
		790	for (y = 0; y < h; y++)
		791	for (x = 0; x < w; x++)
		792	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		793	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		794	}
		795
		796	#############################################################################
		797
		798	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		799
355	SV *	800	SV *
356	pb_to_p7 (GdkPixbuf *pb)	801	pb_to_hv84 (GdkPixbuf *pb)
357	CODE:	802	CODE:
358	{	803	{
359	int w = gdk_pixbuf_get_width (pb);	804	int w = gdk_pixbuf_get_width (pb);
360	int h = gdk_pixbuf_get_height (pb);	805	int h = gdk_pixbuf_get_height (pb);
361	int x, y;	806	int x, y;
362	guchar *dst;	807	guchar *dst;
363	int bpp = gdk_pixbuf_get_n_channels (pb);	808	int bpp = gdk_pixbuf_get_n_channels (pb);
364	guchar *src = gdk_pixbuf_get_pixels (pb);	809	guchar *src = gdk_pixbuf_get_pixels (pb);
365	int sstr = gdk_pixbuf_get_rowstride (pb);	810	int sstr = gdk_pixbuf_get_rowstride (pb);
366	int Er[IW], Eg[IW], Eb[IW];
367	int seed = 77;
368
369	RETVAL = newSV (w * h);
370	SvPOK_only (RETVAL);
371	SvCUR_set (RETVAL, w * h);
372
373	dst = SvPVX (RETVAL);
374
375	memset (Er, 0, sizeof (int) * IW);
376	memset (Eg, 0, sizeof (int) * IW);
377	memset (Eb, 0, sizeof (int) * IW);
378
379	/* some primitive error distribution + random dithering */
380
381	for (y = 0; y < h; y++)
382	{
383	int er = 0, eg = 0, eb = 0;
384
385	for (x = 0; x < w; x++)
386	{
387	int r, g, b;
388	guchar p = src + x bpp + y * sstr;
389
390	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
391	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
392	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
393
394	r = r > 7 ? 7 : r < 0 ? 0 : r;
395	g = g > 7 ? 7 : g < 0 ? 0 : g;
396	b = b > 3 ? 3 : b < 0 ? 0 : b;
397
398	er += p[0] - (r * 255 + 4) / 7;
399	eg += p[1] - (g * 255 + 4) / 7;
400	eb += p[2] - (b * 255 + 2) / 3;
401
402	Er[x] = er >> 1; er -= (er + 1) >> 1;
403	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
404	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
405
406	*dst++ = r << 5 \| g << 2 \| b;
407	}
408	}
409	}
410	OUTPUT:
411	RETVAL
412
413	#############################################################################
414
415	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
416
417	void
418	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
419	CODE:
420	{
421	int w = gdk_pixbuf_get_width (pb);
422	int h = gdk_pixbuf_get_height (pb);
423	int x, y, i;
424	guchar *dst;
425	int bpp = gdk_pixbuf_get_n_channels (pb);
426	guchar *src = gdk_pixbuf_get_pixels (pb);
427	int sstr = gdk_pixbuf_get_rowstride (pb);
428
429	a85_init ();
430
431	for (y = 0; y < h; y++)
432	for (x = 0; x < w; x++)
433	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
434	a85_push (fp, src [x * bpp + y * sstr + i]);
435
436	a85_finish (fp);
437	}
438
439	void
440	dump_binary (PerlIO fp, GdkPixbuf pb)
441	CODE:
442	{
443	int w = gdk_pixbuf_get_width (pb);
444	int h = gdk_pixbuf_get_height (pb);
445	int x, y, i;
446	guchar *dst;
447	int bpp = gdk_pixbuf_get_n_channels (pb);
448	guchar *src = gdk_pixbuf_get_pixels (pb);
449	int sstr = gdk_pixbuf_get_rowstride (pb);
450
451	for (y = 0; y < h; y++)
452	for (x = 0; x < w; x++)
453	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
454	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
455	}
456
457	#############################################################################
458
459	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
460
461	SV *
462	pb_to_hv84 (GdkPixbuf *pb)
463	CODE:
464	{
465	int w = gdk_pixbuf_get_width (pb);
466	int h = gdk_pixbuf_get_height (pb);
467	int x, y;
468	guchar *dst;
469	int bpp = gdk_pixbuf_get_n_channels (pb);
470	guchar *src = gdk_pixbuf_get_pixels (pb);
471	int sstr = gdk_pixbuf_get_rowstride (pb);
472		811
473	RETVAL = newSV (6 * 8 * 12 / 8);	812	RETVAL = newSV (6 * 8 * 12 / 8);
474	SvPOK_only (RETVAL);	813	SvPOK_only (RETVAL);
475	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	814	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
476		815
477	dst = SvPVX (RETVAL);	816	dst = (guchar *)SvPVX (RETVAL);
478		817
479	/* some primitive error distribution + random dithering */	818	/* some primitive error distribution + random dithering */
480		819
481	for (y = 0; y < h; y++)	820	for (y = 0; y < h; y++)
482	{	821	{
…		…
545	#############################################################################	884	#############################################################################
546		885
547	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	886	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
548		887
549	SV *	888	SV *
550	make_histograms (SV *ar)	889	extract_features (SV *ar)
551	CODE:	890	CODE:
552	{	891	{
553	int i;	892	int i;
554	AV av, result;	893	AV av, result;
555		894
556	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	895	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
557	croak ("Not an array ref as first argument to make_histogram");	896	croak ("Not an array ref as first argument to extract_features");
558		897
559	av = (AV *) SvRV (ar);	898	av = (AV *) SvRV (ar);
560	result = newAV ();	899	result = newAV ();
561		900
562	for (i = 0; i <= av_len (av); ++i)	901	for (i = 0; i <= av_len (av); ++i)
563	{	902	{
564	const int HISTSIZE = 64;
565
566	int j;
567	SV sv = av_fetch (av, i, 1);	903	SV sv = av_fetch (av, i, 1);
568	STRLEN len;
569	char *buf = SvPVbyte (sv, len);
570
571	int tmphist[HISTSIZE];
572	float *hist;
573
574	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	904	SV histsv = newSV (9 sizeof (float) + 1);
		905
575	SvPOK_on (histsv);	906	SvPOK_on (histsv);
576	SvCUR_set (histsv, HISTSIZE * sizeof (float));	907	SvCUR_set (histsv, 9 * sizeof (float));
577	hist = (float *)SvPVX (histsv);	908	float hist = (float )SvPVX (histsv);
578		909
579	Zero (tmphist, sizeof (tmphist), char);	910	struct feature f_h, f_s, f_v;
		911	feature_init (&f_h);
		912	feature_init (&f_s);
		913	feature_init (&f_v);
580		914
581	for (j = len; j--; )
582	{
583	unsigned int idx
584	= ((*buf & 0xc0) >> 2)
585	\| ((*buf & 0x18) >> 1)
586	\| (*buf & 0x03);
587
588	++tmphist[idx];
589	++buf;
590	}
591		915	{
592	for (j = 0; j < HISTSIZE; ++j)	916	STRLEN len;
593	hist[j] = (float)tmphist[j] / (len + 1e-30);	917	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		918	while (len >= 3)
		919	{
		920	unsigned int r, g, b, h, s, v;
		921	r = buf++; g = buf++; b = *buf++;
		922	rgb_to_hsv (r, g, b, &h, &s, &v);
		923
		924	feature_update_pass_1 (&f_h, h);
		925	feature_update_pass_1 (&f_s, s);
		926	feature_update_pass_1 (&f_v, v);
		927
		928	len -= 3;
		929	}
		930
		931	feature_finish_pass_1 (&f_h);
		932	feature_finish_pass_1 (&f_s);
		933	feature_finish_pass_1 (&f_v);
		934	}
		935
		936	{
		937	STRLEN len;
		938	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		939	while (len >= 3)
		940	{
		941	unsigned int r, g, b, h, s, v;
		942	r = buf++; g = buf++; b = *buf++;
		943	rgb_to_hsv (r, g, b, &h, &s, &v);
		944
		945	feature_update_pass_2 (&f_h, h);
		946	feature_update_pass_2 (&f_s, s);
		947	feature_update_pass_2 (&f_v, v);
		948
		949	len -= 3;
		950	}
		951
		952	feature_finish_pass_2 (&f_h);
		953	feature_finish_pass_2 (&f_s);
		954	feature_finish_pass_2 (&f_v);
		955	}
		956
		957	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		958	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		959	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
594		960
595	av_push (result, histsv);	961	av_push (result, histsv);
596	}	962	}
597		963
598	RETVAL = newRV_noinc ((SV *)result);	964	RETVAL = newRV_noinc ((SV *)result);
599	}	965	}
600	OUTPUT:	966	OUTPUT:
601	RETVAL	967	RETVAL
602		968
603

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Comparing CV/CV.xs (file contents): Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs. Revision 1.56 by root, Wed Dec 27 17:48:16 2017 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.22 by root, Sun Aug 14 02:25:44 2005 UTC vs.
Revision 1.56 by root, Wed Dec 27 17:48:16 2017 UTC