[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 1.66 by root, Tue Mar 21 00:06:49 2023 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	#if JXL
		30	#include <jxl/decode.h>
		31	#include "jxl/thread_parallel_runner.h"
		32	#endif
		33
		34	#include "perlmulticore.h"
		35
14	#define IW 80 /* MUST match Schnauer.pm! */	36	#define IW 80 /* MUST match Schnauzer.pm! */
15	#define IH 60 /* MUST match Schnauer.pm! */	37	#define IH 60 /* MUST match Schnauzer.pm! */
16
17	#define RAND (seed = (seed + 7141) * 54773 % 134456)
18		38
19	#define LINELENGTH 240	39	#define LINELENGTH 240
20		40
21	#define ELLIPSIS "\xe2\x80\xa6"	41	#define ELLIPSIS "\xe2\x80\xa6"
		42
		43	typedef char *octet_string;
		44
		45	static magic_t magic_cookie[2]; /* !mime, mime */
22		46
23	struct jpg_err_mgr	47	struct jpg_err_mgr
24	{	48	{
25	struct jpeg_error_mgr err;	49	struct jpeg_error_mgr err;
26	jmp_buf setjmp_buffer;	50	jmp_buf setjmp_buffer;
27	};	51	};
28		52
29	static void	53	static void
30	cv_error_exit (j_common_ptr cinfo)	54	cv_error_exit (j_common_ptr cinfo)
31	{	55	{
		56	cinfo->err->output_message (cinfo);
32	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	57	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
33	}	58	}
34		59
35	static void	60	static void
36	cv_error_output (j_common_ptr cinfo)	61	cv_error_output (j_common_ptr cinfo)
37	{	62	{
		63	char msg[JMSG_LENGTH_MAX];
		64
		65	cinfo->err->format_message (cinfo, msg);
		66
		67	fprintf (stderr, "JPEG decoding error: %s\n", msg);
38	return;	68	return;
39	}	69	}
40		70
41	static void	71	static void
42	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,	72	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
…		…
63		93
64	*h &= 255;	94	*h &= 255;
65	}	95	}
66	}	96	}
67		97
		98	struct feature {
		99	float v1, v2, v3; // mean, square, cube
		100	int n;
		101	};
		102
		103	static void
		104	feature_init (struct feature *f)
		105	{
		106	f->v1 = 0.;
		107	f->v2 = 0.;
		108	f->v3 = 0.;
		109	f->n = 0;
		110	}
		111
		112	// didn't find an algorithm to neatly do mean, variance and skew in one pass.
		113	// elmex ist schuld.
		114	static void
		115	feature_update_pass_1 (struct feature *f, unsigned int v)
		116	{
		117	f->v1 += v;
		118	f->n += 1;
		119	}
		120
		121	static void
		122	feature_finish_pass_1 (struct feature *f)
		123	{
		124	if (f->n < 1)
		125	return;
		126
		127	f->v1 /= f->n;
		128	}
		129
		130	static void
		131	feature_update_pass_2 (struct feature *f, unsigned int v)
		132	{
		133	float d = v - f->v1;
		134
		135	f->v2 += d * d;
		136	f->v3 += d * d * d;
		137	}
		138
		139	static void
		140	feature_finish_pass_2 (struct feature *f)
		141	{
		142	if (f->n < 1)
		143	return;
		144
		145	f->v2 /= f->n;
		146	f->v3 /= f->n;
		147
		148	f->v1 /= 255.;
		149	f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2);
		150	f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.);
		151	}
		152
68	static guint32 a85_val;	153	static guint32 a85_val;
69	static guint a85_cnt;	154	static guint a85_cnt;
70	static guchar a85_buf[LINELENGTH], *a85_ptr;	155	static guchar a85_buf[LINELENGTH], *a85_ptr;
71		156
72	static void	157	static void
…		…
84	if (!--a85_cnt)	169	if (!--a85_cnt)
85	{	170	{
86	a85_cnt = 4;	171	a85_cnt = 4;
87	if (a85_val)	172	if (a85_val)
88	{	173	{
89	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
90	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	175	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
91	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	176	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
92	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	177	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
93	a85_ptr[0] = (a85_val ) + 33;	178	a85_ptr[0] = (a85_val ) + 33;
94		179
95	a85_ptr += 5;	180	a85_ptr += 5;
96	}	181	}
…		…
119		204
120	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	205	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
121	}	206	}
122		207
123	/////////////////////////////////////////////////////////////////////////////	208	/////////////////////////////////////////////////////////////////////////////
		209	// memory source for libjpeg
		210
		211	static void cv_ms_init (j_decompress_ptr cinfo)
		212	{
		213	}
		214
		215	static void cv_ms_term (j_decompress_ptr cinfo)
		216	{
		217	}
		218
		219	static boolean cv_ms_fill (j_decompress_ptr cinfo)
		220	{
		221	// unexpected EOF, warn and generate fake EOI marker
		222
		223	WARNMS (cinfo, JWRN_JPEG_EOF);
		224
		225	struct jpeg_source_mgr src = (struct jpeg_source_mgr )cinfo->src;
		226
		227	static const JOCTET eoi[] = { 0xFF, JPEG_EOI };
		228
		229	src->next_input_byte = eoi;
		230	src->bytes_in_buffer = sizeof (eoi);
		231
		232	return TRUE;
		233	}
		234
		235	static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
		236	{
		237	struct jpeg_source_mgr src = (struct jpeg_source_mgr )cinfo->src;
		238
		239	src->next_input_byte += num_bytes;
		240	src->bytes_in_buffer -= num_bytes;
		241	}
		242
		243	static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
		244	{
		245	struct jpeg_source_mgr *src;
		246
		247	if (!cinfo->src)
		248	cinfo->src = (struct jpeg_source_mgr *)
		249	(*cinfo->mem->alloc_small) (
		250	(j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
		251	);
		252
		253	src = (struct jpeg_source_mgr *)cinfo->src;
		254	src->init_source = cv_ms_init;
		255	src->fill_input_buffer = cv_ms_fill;
		256	src->skip_input_data = cv_ms_skip;
		257	src->resync_to_restart = jpeg_resync_to_restart;
		258	src->term_source = cv_ms_term;
		259	src->next_input_byte = (JOCTET *)buf;
		260	src->bytes_in_buffer = buflen;
		261	}
		262
		263	/////////////////////////////////////////////////////////////////////////////
		264
		265	/* great, the jpeg-xl reference implementaton requires us to parse bmff files */
		266
		267	struct bmff_box
		268	{
		269	char type[4];
		270	const uint8_t *ptr;
		271	size_t size;
		272	};
		273
		274	static int
		275	bmff_parse_box (struct bmff_box box, const uint8_t next_in, size_t avail_in)
		276	{
		277	if (*avail_in < 8)
		278	return 0;
		279
		280	box->size = ((*next_in)[0] << 24)
		281	\| ((*next_in)[1] << 16)
		282	\| ((*next_in)[2] << 8)
		283	\| ((*next_in)[3] );
		284
		285	if (box->size < 8)
		286	return 0;
		287
		288	if (*avail_in < box->size)
		289	return 0;
		290
		291	memcpy (box->type, *next_in + 4, 4);
		292	box->ptr = *next_in + 8;
		293
		294	*next_in += box->size;
		295	*avail_in -= box->size;
		296
		297	box->size -= 8;
		298
		299	return 1;
		300	}
		301
		302	/////////////////////////////////////////////////////////////////////////////
124		303
125	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	304	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
126		305
127	PROTOTYPES: ENABLE	306	PROTOTYPES: ENABLE
128		307
		308	void
		309	_exit (int code)
		310
		311	# calculate the common prefix length of two strings
		312	# missing function in perl. really :)
		313	int
		314	common_prefix_length (a, b)
		315	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		316	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		317	CODE:
		318	RETVAL = 0;
		319
		320	while (a == b && *a)
		321	{
		322	RETVAL += (*a & 0xc0) != 0x80;
		323	a++, b++;
		324	}
		325
		326	OUTPUT:
		327	RETVAL
		328
		329	const char *
		330	magic (SV *path_or_data)
		331	ALIAS:
		332	magic = 0
		333	magic_mime = 1
		334	magic_buffer = 2
		335	magic_buffer_mime = 3
		336	CODE:
		337	{
		338	STRLEN len;
		339	char *data = SvPVbyte (path_or_data, len);
		340
		341	if (!magic_cookie[0])
		342	{
		343	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		344	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		345	magic_load (magic_cookie[0], 0);
		346	magic_load (magic_cookie[1], 0);
		347	}
		348
		349	perlinterp_release ();
		350
		351	RETVAL = ix & 2
		352	? magic_buffer (magic_cookie[ix & 1], data, len)
		353	: magic_file (magic_cookie[ix & 1], data);
		354
		355	perlinterp_acquire ();
		356	}
		357	OUTPUT:
		358	RETVAL
		359
129	# missing in Gtk2 perl module	360	# missing/broken in Gtk2 perl module
		361
		362	void
		363	gdk_window_clear_hints (GdkWindow *window)
		364	CODE:
		365	gdk_window_set_geometry_hints (window, 0, 0);
130		366
131	gboolean	367	gboolean
132	gdk_net_wm_supports (GdkAtom property)	368	gdk_net_wm_supports (GdkAtom property)
133	CODE:	369	CODE:
134	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	370	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
138	#endif	374	#endif
139	OUTPUT:	375	OUTPUT:
140	RETVAL	376	RETVAL
141		377
142	GdkPixbuf_noinc *	378	GdkPixbuf_noinc *
143	transpose (GdkPixbuf *pb)	379	dealpha_expose (GdkPixbuf *pb)
144	CODE:	380	CODE:
		381	perlinterp_release ();
145	{	382	{
146	int w = gdk_pixbuf_get_width (pb);	383	int w = gdk_pixbuf_get_width (pb);
147	int h = gdk_pixbuf_get_height (pb);	384	int h = gdk_pixbuf_get_height (pb);
148	int bpp = gdk_pixbuf_get_n_channels (pb);	385	int bpp = gdk_pixbuf_get_n_channels (pb);
149	int x, y, i;	386	int x, y, i;
150	guchar src = gdk_pixbuf_get_pixels (pb), dst;	387	guchar src = gdk_pixbuf_get_pixels (pb), dst;
151	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	388	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
152		389
153	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	390	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
154		391
155	dst = gdk_pixbuf_get_pixels (RETVAL);	392	dst = gdk_pixbuf_get_pixels (RETVAL);
156	dstr = gdk_pixbuf_get_rowstride (RETVAL);	393	dstr = gdk_pixbuf_get_rowstride (RETVAL);
157		394
158	for (y = 0; y < h; y++)
159	for (x = 0; x < w; x++)	395	for (x = 0; x < w; x++)
		396	for (y = 0; y < h; y++)
160	for (i = 0; i < bpp; i++)	397	for (i = 0; i < 3; i++)
161	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	398	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
162	}	399	}
		400	perlinterp_acquire ();
163	OUTPUT:	401	OUTPUT:
164	RETVAL	402	RETVAL
165		403
166	GdkPixbuf_noinc *	404	GdkPixbuf_noinc *
167	flop (GdkPixbuf *pb)	405	rotate (GdkPixbuf *pb, int angle)
168	CODE:	406	CODE:
169	{	407	perlinterp_release ();
170	int w = gdk_pixbuf_get_width (pb);	408	if (angle < 0)
171	int h = gdk_pixbuf_get_height (pb);	409	angle += 360;
172	int bpp = gdk_pixbuf_get_n_channels (pb);	410	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
173	int x, y, i;	411	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
174	guchar src = gdk_pixbuf_get_pixels (pb), dst;	412	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
175	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	413	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
176		414	: angle);
177	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	415	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:	416	OUTPUT:
188	RETVAL	417	RETVAL
189		418
		419	const char *
		420	filetype (SV *image_data)
		421	CODE:
		422	{
		423	STRLEN data_len;
		424	U8 *data = SvPVbyte (image_data, data_len);
		425	static const unsigned char jxl_header[] = {
		426	0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a
		427	};
		428
		429	if (data_len >= 20
		430	&& data[0] == 0xff
		431	&& data[1] == 0xd8
		432	&& data[2] == 0xff)
		433	RETVAL = "image/jpeg";
		434	else if (data_len >= 12
		435	&& data[ 0] == (U8)'R'
		436	&& data[ 1] == (U8)'I'
		437	&& data[ 2] == (U8)'F'
		438	&& data[ 3] == (U8)'F'
		439	&& data[ 8] == (U8)'W'
		440	&& data[ 9] == (U8)'E'
		441	&& data[10] == (U8)'B'
		442	&& data[11] == (U8)'P')
		443	RETVAL = "image/webp";
		444	else if (data_len >= 16
		445	&& data[ 0] == 0x89
		446	&& data[ 1] == (U8)'P'
		447	&& data[ 2] == (U8)'N'
		448	&& data[ 3] == (U8)'G'
		449	&& data[ 4] == 0x0d
		450	&& data[ 5] == 0x0a
		451	&& data[ 6] == 0x1a
		452	&& data[ 7] == 0x0a)
		453	RETVAL = "image/png";
		454	else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0)
		455	RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck
		456	else if (data_len >= 2
		457	&& data[0] == 0xff
		458	&& data[1] == 0x0a)
		459	RETVAL = "image/jxl";
		460	else if (data_len >= 13
		461	&& data[0] == 'G'
		462	&& data[1] == 'I'
		463	&& data[2] == 'F'
		464	&& data[3] == '8'
		465	//&& (data[4] == '7' \|\| data[4] == '9')
		466	&& data[5] == 'a')
		467	{
		468	RETVAL = "image/gif";
		469
		470	// now see if its animated - we require the netscape application header for this
		471	int ofs = 13;
		472
		473	if (data[10] & 0x80)
		474	ofs += (1 << ((data[10] & 7) + 1)) * 3;
		475
		476	if (data_len >= ofs + 2 + 1 + 11)
		477	{
		478
		479	// skip a graphic control extension block. we assume
		480	// there is at most one such block - while the NAB
		481	// has to come firstz, some files do not obey this
		482	if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
		483	ofs += 3 + data[ofs + 2] + 1;
		484
		485	if (data_len >= ofs + 2 + 1 + 11)
		486	if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
		487	RETVAL = "video/gif";
		488	}
		489	}
		490
		491	else
		492	XSRETURN_UNDEF;
		493	}
		494	OUTPUT:
		495	RETVAL
		496
190	GdkPixbuf_noinc *	497	GdkPixbuf_noinc *
191	load_jpeg (char *path, int thumbnail=0)	498	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		499	CODE:
		500	{
		501	#if WEBP
		502	STRLEN data_size;
		503	int alpha;
		504	WebPData data;
		505	WebPDemuxer *demux;
		506	WebPIterator iter;
		507	WebPDecoderConfig config;
		508	int inw, inh;
		509
		510	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		511	data.size = data_size;
		512
		513	perlinterp_release ();
		514
		515	RETVAL = 0;
		516
		517	if (!(demux = WebPDemux (&data)))
		518	goto err_demux;
		519
		520	if (!WebPDemuxGetFrame (demux, 1, &iter))
		521	goto err_iter;
		522
		523	if (!WebPInitDecoderConfig (&config))
		524	goto err_iter;
		525
		526	config.options.use_threads = 1;
		527
		528	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		529	goto err_iter;
		530
		531	inw = config.input.width;
		532	inh = config.input.height;
		533
		534	if (thumbnail)
		535	{
		536	if (inw * ih > inh * iw)
		537	ih = (iw * inh + inw - 1) / inw;
		538	else
		539	iw = (ih * inw + inh - 1) / inh;
		540
		541	config.options.bypass_filtering = 1;
		542	config.options.no_fancy_upsampling = 1;
		543
		544	config.options.use_scaling = 1;
		545	config.options.scaled_width = iw;
		546	config.options.scaled_height = ih;
		547	}
		548	else
		549	{
		550	iw = inw;
		551	ih = inh;
		552	}
		553
		554	alpha = !!config.input.has_alpha;
		555
		556	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		557	if (!RETVAL)
		558	goto err_iter;
		559
		560	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		561	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		562	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		563	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		564	config.output.is_external_memory = 1;
		565
		566	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		567	{
		568	g_object_unref (RETVAL);
		569	RETVAL = 0;
		570	goto err_iter;
		571	}
		572
		573	err_iter:
		574	WebPDemuxReleaseIterator (&iter);
		575	err_demux:
		576	WebPDemuxDelete (demux);
		577
		578	perlinterp_acquire ();
		579	#else
		580	croak ("load_webp: webp not enabled at compile time");
		581	#endif
		582	}
		583	OUTPUT:
		584	RETVAL
		585
		586	GdkPixbuf_noinc *
		587	decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		588	CODE:
		589	{
		590	#if JXL
		591	JxlDecoder *dec;
		592	JxlBasicInfo info;
		593	const uint8_t next_in = (uint8_t )SvPVbyte_nolen (image_data);
		594	size_t avail_in = SvCUR (image_data);
		595	const char *error = 0;
		596	JxlDecoderStatus status;
		597	static void *runner_cache;
		598	void *runner = 0;
		599
		600	RETVAL = 0;
		601
		602	if (runner_cache)
		603	runner = runner_cache;
		604	else
		605	runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
		606
		607	runner_cache = 0;
		608
		609	perlinterp_release ();
		610
		611	dec = JxlDecoderCreate (0);
		612
		613	error = "JxlDecoderCreate failed";
		614	if (!dec)
		615	goto done;
		616
		617	status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
		618	error = "JxlDecoderSetParallelRunner failed";
		619	if (status != JXL_DEC_SUCCESS)
		620	goto done;
		621
		622	error = "JxlDecoderSubscribeEvents failed";
		623	status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO \| JXL_DEC_FULL_IMAGE);
		624	if (status != JXL_DEC_SUCCESS)
		625	goto done;
		626
		627	status = JxlDecoderSetInput (dec, next_in, avail_in);
		628	error = "JxlDecoderSetInput failed";
		629	if (status != JXL_DEC_SUCCESS)
		630	goto done;
		631
		632	for (;;)
		633	{
		634	status = JxlDecoderProcessInput (dec);
		635
		636	switch (status)
		637	{
		638	case JXL_DEC_FULL_IMAGE:
		639	error = 0;
		640	goto done;
		641
		642	case JXL_DEC_ERROR:
		643	error = "JxlDecoderProcessInput failed";
		644	goto done;
		645
		646	case JXL_DEC_NEED_MORE_INPUT:
		647	error = "incomplete file";
		648	goto done;
		649
		650	case JXL_DEC_SUCCESS:
		651	error = "incomplete decode";
		652	goto done;
		653
		654	case JXL_DEC_BASIC_INFO:
		655	{
		656	status = JxlDecoderGetBasicInfo (dec, &info);
		657	error = "JxlDecoderGetBasicInfo failed";
		658	if (status != JXL_DEC_SUCCESS)
		659	goto done;
		660
		661	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
		662	error = "unable to allocate pixbuf";
		663	if (!RETVAL)
		664	goto done;
		665
		666	JxlPixelFormat format = {
		667	info.alpha_bits ? 4 : 3,
		668	JXL_TYPE_UINT8,
		669	JXL_NATIVE_ENDIAN,
		670	gdk_pixbuf_get_rowstride (RETVAL)
		671	};
		672
		673	// cannot use gdk_pixbuf_get_byte_length because that does
		674	// not return the size of the buffer, but the size of the buffer without
		675	// the last padding bytes. the internal buffer is rowstride * ysize,
		676	// and this is what the jxl decoder needs. none of this is documented
		677	// in either library, of course.
		678
		679	status = JxlDecoderSetImageOutBuffer (
		680	dec,
		681	&format,
		682	gdk_pixbuf_get_pixels (RETVAL),
		683	gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
		684	);
		685	error = "JxlDecoderSetImageOutBuffer failed";
		686	if (status != JXL_DEC_SUCCESS)
		687	goto done;
		688	}
		689	break;
		690
		691	default:
		692	error = "unexpected event";
		693	goto done;
		694	}
		695	}
		696
		697	done:
		698	if (dec)
		699	JxlDecoderDestroy (dec);
		700
		701	perlinterp_acquire ();
		702
		703	if (runner_cache)
		704	JxlThreadParallelRunnerDestroy (runner);
		705
		706	runner_cache = runner;
		707
		708	if (error)
		709	{
		710	if (RETVAL)
		711	g_object_unref (RETVAL);
		712
		713	croak ("load_jxl: %s (status %d)", error, status);
		714	}
		715	#else
		716	croak ("load_jxl: jpeg-xl not enabled at compile time");
		717	#endif
		718	}
		719	OUTPUT:
		720	RETVAL
		721
		722	GdkPixbuf_noinc *
		723	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
192	CODE:	724	CODE:
193	{	725	{
194	struct jpeg_decompress_struct cinfo;	726	struct jpeg_decompress_struct cinfo;
195	struct jpg_err_mgr jerr;	727	struct jpg_err_mgr jerr;
196	guchar *data;
197	int rs;	728	int rs;
198	FILE *fp;
199	volatile GdkPixbuf *pb = 0;	729	volatile GdkPixbuf *pb = 0;
		730	STRLEN data_len;
		731	guchar *data = SvPVbyte (image_data, data_len);
		732
200	RETVAL = 0;	733	RETVAL = 0;
201		734
202	if (!(fp = fopen (path, "rb")))	735	perlinterp_release ();
203	XSRETURN_UNDEF;
204		736
205	cinfo.err = jpeg_std_error (&jerr.err);	737	cinfo.err = jpeg_std_error (&jerr.err);
206		738
207	jerr.err.error_exit = cv_error_exit;	739	jerr.err.error_exit = cv_error_exit;
208	jerr.err.output_message = cv_error_output;	740	jerr.err.output_message = cv_error_output;
209		741
210	if ((rs = setjmp (jerr.setjmp_buffer)))	742	if ((rs = setjmp (jerr.setjmp_buffer)))
211	{	743	{
212	fclose (fp);
213	jpeg_destroy_decompress (&cinfo);	744	jpeg_destroy_decompress (&cinfo);
214		745
215	if (pb)	746	if (pb)
216	g_object_unref ((gpointer)pb);	747	g_object_unref ((gpointer)pb);
217		748
		749	perlinterp_acquire ();
218	XSRETURN_UNDEF;	750	XSRETURN_UNDEF;
219	}	751	}
220		752
		753	if (!data_len)
		754	longjmp (jerr.setjmp_buffer, 4);
		755
221	jpeg_create_decompress (&cinfo);	756	jpeg_create_decompress (&cinfo);
		757	cv_jpeg_mem_src (&cinfo, data, data_len);
222		758
223	jpeg_stdio_src (&cinfo, fp);
224	jpeg_read_header (&cinfo, TRUE);	759	jpeg_read_header (&cinfo, TRUE);
225		760
226	cinfo.dct_method = JDCT_DEFAULT;	761	cinfo.dct_method = JDCT_DEFAULT;
227	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	762	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
228	cinfo.do_block_smoothing = FALSE;	763	cinfo.do_block_smoothing = FALSE;
…		…
238	{	773	{
239	cinfo.dct_method = JDCT_FASTEST;	774	cinfo.dct_method = JDCT_FASTEST;
240	cinfo.do_fancy_upsampling = FALSE;	775	cinfo.do_fancy_upsampling = FALSE;
241		776
242	while (cinfo.scale_denom < 8	777	while (cinfo.scale_denom < 8
243	&& cinfo.output_width >= IW*4	778	&& cinfo.output_width >= iw*4
244	&& cinfo.output_height >= IH*4)	779	&& cinfo.output_height >= ih*4)
245	{	780	{
246	cinfo.scale_denom <<= 1;	781	cinfo.scale_denom <<= 1;
247	jpeg_calc_output_dimensions (&cinfo);	782	jpeg_calc_output_dimensions (&cinfo);
248	}	783	}
249	}	784	}
250		785
		786	if (cinfo.output_components != 3)
		787	longjmp (jerr.setjmp_buffer, 3);
		788
		789	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		790	{
		791	cinfo.out_color_space = JCS_CMYK;
		792	cinfo.output_components = 4;
		793	}
		794
251	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	795	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
252	if (!RETVAL)	796	if (!RETVAL)
253	longjmp (jerr.setjmp_buffer, 2);	797	longjmp (jerr.setjmp_buffer, 2);
254		798
255	data = gdk_pixbuf_get_pixels (RETVAL);	799	data = gdk_pixbuf_get_pixels (RETVAL);
256	rs = gdk_pixbuf_get_rowstride (RETVAL);	800	rs = gdk_pixbuf_get_rowstride (RETVAL);
257
258	if (cinfo.output_components != 3)
259	longjmp (jerr.setjmp_buffer, 3);
260		801
261	jpeg_start_decompress (&cinfo);	802	jpeg_start_decompress (&cinfo);
262		803
263	while (cinfo.output_scanline < cinfo.output_height)	804	while (cinfo.output_scanline < cinfo.output_height)
264	{	805	{
…		…
271	rp [3] = (guchar *)rp [2] + rs;	812	rp [3] = (guchar *)rp [2] + rs;
272		813
273	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	814	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
274	}	815	}
275		816
		817	if (cinfo.out_color_space == JCS_CMYK)
		818	{
		819	guchar end = data + cinfo.output_height rs;
		820
		821	while (data < end)
		822	{
		823	U32 c = data [0];
		824	U32 m = data [1];
		825	U32 y = data [2];
		826	U32 k = data [3];
		827
		828	if (0)
		829	if (cinfo.Adobe_transform == 2)
		830	{
		831	c ^= 0xff;
		832	m ^= 0xff;
		833	y ^= 0xff;
		834	k ^= 0xff;
		835	}
		836
		837	data [0] = (c * k + 0x80) / 0xff;
		838	data [1] = (m * k + 0x80) / 0xff;
		839	data [2] = (y * k + 0x80) / 0xff;
		840	data [3] = 0xff;
		841
		842	data += 4;
		843	}
		844	}
		845
276	jpeg_finish_decompress (&cinfo);	846	jpeg_finish_decompress (&cinfo);
277	fclose (fp);
278	jpeg_destroy_decompress (&cinfo);	847	jpeg_destroy_decompress (&cinfo);
		848	perlinterp_acquire ();
279	}	849	}
280	OUTPUT:	850	OUTPUT:
281	RETVAL	851	RETVAL
282		852
		853	void
		854	compare (GdkPixbuf a, GdkPixbuf b)
		855	PPCODE:
		856	perlinterp_release ();
		857	{
		858	int w = gdk_pixbuf_get_width (a);
		859	int h = gdk_pixbuf_get_height (a);
		860
		861	int sa = gdk_pixbuf_get_rowstride (a);
		862	int sb = gdk_pixbuf_get_rowstride (b);
		863
		864	guchar *pa = gdk_pixbuf_get_pixels (a);
		865	guchar *pb = gdk_pixbuf_get_pixels (b);
		866
		867	int x, y;
		868
		869	assert (w == gdk_pixbuf_get_width (b));
		870	assert (h == gdk_pixbuf_get_height (b));
		871
		872	assert (gdk_pixbuf_get_n_channels (a) == 3);
		873	assert (gdk_pixbuf_get_n_channels (b) == 3);
		874
		875	double diff = 0.;
		876	int peak = 0;
		877
		878	if (w && h)
		879	for (y = 0; y < h; y++)
		880	{
		881	guchar pa_ = pa + y sa;
		882	guchar pb_ = pb + y sb;
		883
		884	for (x = 0; x < w; x++)
		885	{
		886	int d;
		887
		888	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		889	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		890	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		891	}
		892	}
		893
		894	perlinterp_acquire ();
		895
		896	EXTEND (SP, 2);
		897	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		898	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		899	}
		900
283	#############################################################################	901	#############################################################################
284		902
285	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	903	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		904
		905	# currently only works for filenames (octet strings)
286		906
287	SV *	907	SV *
288	foldcase (SV *pathsv)	908	foldcase (SV *pathsv)
289	PROTOTYPE: $	909	PROTOTYPE: $
290	CODE:	910	CODE:
291	{	911	{
292	STRLEN plen;	912	STRLEN plen;
293	U8 *path = SvPVutf8 (pathsv, plen);	913	U8 path = (U8 )SvPV (pathsv, plen);
294	U8 *pend = path + plen;	914	U8 *pend = path + plen;
295	U8 dst [plen * 6 * 3], *dstp = dst;	915	U8 dst [plen * 8 * 3], *dstp = dst;
296		916
297	while (path < pend)	917	while (path < pend)
298	{	918	{
299	U8 ch = *path;	919	U8 ch = *path;
300		920
301	if (ch >= 'a' && ch <= 'z')	921	if (ch >= 'a' && ch <= 'z')
302	dstp++ = path++;	922	dstp++ = path++;
		923	else if (ch >= 'A' && ch <= 'Z')
		924	dstp++ = path++ + ('a' - 'A');
303	else if (ch >= '0' && ch <= '9')	925	else if (ch >= '0' && ch <= '9')
304	{	926	{
		927	/* version sort, up to 8 digits */
305	STRLEN el, nl = 0;	928	STRLEN el, nl = 0;
306	while (path >= '0' && path <= '9' && path < pend)	929	while (path >= '0' && path <= '9' && path < pend)
307	path++, nl++;	930	path++, nl++;
308		931
309	for (el = nl; el < 6; el++)	932	for (el = nl; el < 8; el++)
310	*dstp++ = '0';	933	*dstp++ = '0';
311		934
312	memcpy (dstp, path - nl, nl);	935	memcpy (dstp, path - nl, nl);
313	dstp += nl;	936	dstp += nl;
314	}	937	}
		938	else
		939	dstp++ = path++;
		940	#if 0
315	else	941	else
316	{	942	{
317	STRLEN cl;	943	STRLEN cl;
318	to_utf8_fold (path, dstp, &cl);	944	to_utf8_fold (path, dstp, &cl);
319	dstp += cl;	945	dstp += cl;
320	path += is_utf8_char (path);	946	path += is_utf8_char (path);
321	}	947	}
		948	#endif
322	}	949	}
323		950
324	RETVAL = newSVpvn (dst, dstp - dst);	951	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
325	}	952	}
326	OUTPUT:	953	OUTPUT:
327	RETVAL	954	RETVAL
328		955
329	GdkPixbuf_noinc *	956	GdkPixbuf_noinc *
330	p7_to_pb (int w, int h, guchar *src)	957	p7_to_pb (int w, int h, SV *src_sv)
331	PROTOTYPE: @	958	PROTOTYPE: @
332	CODE:	959	CODE:
333	{	960	{
334	int x, y;	961	int x, y;
335	guchar dst, d;	962	guchar dst, d;
336	int dstr;	963	int dstr;
		964	guchar src = (guchar )SvPVbyte_nolen (src_sv);
337		965
338	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	966	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
339	dst = gdk_pixbuf_get_pixels (RETVAL);	967	dst = gdk_pixbuf_get_pixels (RETVAL);
340	dstr = gdk_pixbuf_get_rowstride (RETVAL);	968	dstr = gdk_pixbuf_get_rowstride (RETVAL);
341		969
…		…
350	}	978	}
351	}	979	}
352	OUTPUT:	980	OUTPUT:
353	RETVAL	981	RETVAL
354		982
		983	#############################################################################
		984
		985	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		986
		987	void
		988	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		989	CODE:
		990	{
		991	int w = gdk_pixbuf_get_width (pb);
		992	int h = gdk_pixbuf_get_height (pb);
		993	int x, y, i;
		994	guchar *dst;
		995	int bpp = gdk_pixbuf_get_n_channels (pb);
		996	guchar *src = gdk_pixbuf_get_pixels (pb);
		997	int sstr = gdk_pixbuf_get_rowstride (pb);
		998
		999	a85_init ();
		1000
		1001	for (y = 0; y < h; y++)
		1002	for (x = 0; x < w; x++)
		1003	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		1004	a85_push (fp, src [x * bpp + y * sstr + i]);
		1005
		1006	a85_finish (fp);
		1007	}
		1008
		1009	void
		1010	dump_binary (PerlIO fp, GdkPixbuf pb)
		1011	CODE:
		1012	{
		1013	int w = gdk_pixbuf_get_width (pb);
		1014	int h = gdk_pixbuf_get_height (pb);
		1015	int x, y, i;
		1016	guchar *dst;
		1017	int bpp = gdk_pixbuf_get_n_channels (pb);
		1018	guchar *src = gdk_pixbuf_get_pixels (pb);
		1019	int sstr = gdk_pixbuf_get_rowstride (pb);
		1020
		1021	for (y = 0; y < h; y++)
		1022	for (x = 0; x < w; x++)
		1023	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		1024	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		1025	}
		1026
		1027	#############################################################################
		1028
		1029	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		1030
355	SV *	1031	SV *
356	pb_to_p7 (GdkPixbuf *pb)	1032	pb_to_hv84 (GdkPixbuf *pb)
357	CODE:	1033	CODE:
358	{	1034	{
359	int w = gdk_pixbuf_get_width (pb);	1035	int w = gdk_pixbuf_get_width (pb);
360	int h = gdk_pixbuf_get_height (pb);	1036	int h = gdk_pixbuf_get_height (pb);
361	int x, y;	1037	int x, y;
362	guchar *dst;	1038	guchar *dst;
363	int bpp = gdk_pixbuf_get_n_channels (pb);	1039	int bpp = gdk_pixbuf_get_n_channels (pb);
364	guchar *src = gdk_pixbuf_get_pixels (pb);	1040	guchar *src = gdk_pixbuf_get_pixels (pb);
365	int sstr = gdk_pixbuf_get_rowstride (pb);	1041	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		1042
473	RETVAL = newSV (6 * 8 * 12 / 8);	1043	RETVAL = newSV (6 * 8 * 12 / 8);
474	SvPOK_only (RETVAL);	1044	SvPOK_only (RETVAL);
475	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	1045	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
476		1046
477	dst = SvPVX (RETVAL);	1047	dst = (guchar *)SvPVX (RETVAL);
478		1048
479	/* some primitive error distribution + random dithering */	1049	/* some primitive error distribution + random dithering */
480		1050
481	for (y = 0; y < h; y++)	1051	for (y = 0; y < h; y++)
482	{	1052	{
…		…
545	#############################################################################	1115	#############################################################################
546		1116
547	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	1117	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
548		1118
549	SV *	1119	SV *
550	make_histograms (SV *ar)	1120	extract_features (SV *ar)
551	CODE:	1121	CODE:
552	{	1122	{
553	int i;	1123	int i;
554	AV av, result;	1124	AV av, result;
555		1125
556	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	1126	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
557	croak ("Not an array ref as first argument to make_histogram");	1127	croak ("Not an array ref as first argument to extract_features");
558		1128
559	av = (AV *) SvRV (ar);	1129	av = (AV *) SvRV (ar);
560	result = newAV ();	1130	result = newAV ();
561		1131
562	for (i = 0; i <= av_len (av); ++i)	1132	for (i = 0; i <= av_len (av); ++i)
563	{	1133	{
564	const int HISTSIZE = 64;
565
566	int j;
567	SV sv = av_fetch (av, i, 1);	1134	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);	1135	SV histsv = newSV (9 sizeof (float) + 1);
		1136
575	SvPOK_on (histsv);	1137	SvPOK_on (histsv);
576	SvCUR_set (histsv, HISTSIZE * sizeof (float));	1138	SvCUR_set (histsv, 9 * sizeof (float));
577	hist = (float *)SvPVX (histsv);	1139	float hist = (float )SvPVX (histsv);
578		1140
579	Zero (tmphist, sizeof (tmphist), char);	1141	struct feature f_h, f_s, f_v;
		1142	feature_init (&f_h);
		1143	feature_init (&f_s);
		1144	feature_init (&f_v);
580		1145
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		1146	{
592	for (j = 0; j < HISTSIZE; ++j)	1147	STRLEN len;
593	hist[j] = (float)tmphist[j] / (len + 1e-30);	1148	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		1149	while (len >= 3)
		1150	{
		1151	unsigned int r, g, b, h, s, v;
		1152	r = buf++; g = buf++; b = *buf++;
		1153	rgb_to_hsv (r, g, b, &h, &s, &v);
		1154
		1155	feature_update_pass_1 (&f_h, h);
		1156	feature_update_pass_1 (&f_s, s);
		1157	feature_update_pass_1 (&f_v, v);
		1158
		1159	len -= 3;
		1160	}
		1161
		1162	feature_finish_pass_1 (&f_h);
		1163	feature_finish_pass_1 (&f_s);
		1164	feature_finish_pass_1 (&f_v);
		1165	}
		1166
		1167	{
		1168	STRLEN len;
		1169	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		1170	while (len >= 3)
		1171	{
		1172	unsigned int r, g, b, h, s, v;
		1173	r = buf++; g = buf++; b = *buf++;
		1174	rgb_to_hsv (r, g, b, &h, &s, &v);
		1175
		1176	feature_update_pass_2 (&f_h, h);
		1177	feature_update_pass_2 (&f_s, s);
		1178	feature_update_pass_2 (&f_v, v);
		1179
		1180	len -= 3;
		1181	}
		1182
		1183	feature_finish_pass_2 (&f_h);
		1184	feature_finish_pass_2 (&f_s);
		1185	feature_finish_pass_2 (&f_v);
		1186	}
		1187
		1188	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		1189	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		1190	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
594		1191
595	av_push (result, histsv);	1192	av_push (result, histsv);
596	}	1193	}
597		1194
598	RETVAL = newRV_noinc ((SV *)result);	1195	RETVAL = newRV_noinc ((SV *)result);
599	}	1196	}
600	OUTPUT:	1197	OUTPUT:
601	RETVAL	1198	RETVAL
602		1199
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 1.66 by root, Tue Mar 21 00:06:49 2023 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 1.66 by root, Tue Mar 21 00:06:49 2023 UTC