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

Comparing CV/CV.xs (file contents):
Revision 1.18 by root, Wed Jul 20 09:06:37 2005 UTC vs.
Revision 1.62 by root, Sun Jul 25 11:32:46 2021 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	# calculate the common prefix length of two strings
		309	# missing function in perl. really :)
		310	int
		311	common_prefix_length (a, b)
		312	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		313	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		314	CODE:
		315	RETVAL = 0;
		316
		317	while (a == b && *a)
		318	{
		319	RETVAL += (*a & 0xc0) != 0x80;
		320	a++, b++;
		321	}
		322
		323	OUTPUT:
		324	RETVAL
		325
		326	const char *
		327	magic (SV *path_or_data)
		328	ALIAS:
		329	magic = 0
		330	magic_mime = 1
		331	magic_buffer = 2
		332	magic_buffer_mime = 3
		333	CODE:
		334	{
		335	STRLEN len;
		336	char *data = SvPVbyte (path_or_data, len);
		337
		338	if (!magic_cookie[0])
		339	{
		340	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		341	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		342	magic_load (magic_cookie[0], 0);
		343	magic_load (magic_cookie[1], 0);
		344	}
		345
		346	perlinterp_release ();
		347
		348	RETVAL = ix & 2
		349	? magic_buffer (magic_cookie[ix & 1], data, len)
		350	: magic_file (magic_cookie[ix & 1], data);
		351
		352	perlinterp_acquire ();
		353	}
		354	OUTPUT:
		355	RETVAL
		356
		357	# missing/broken in Gtk2 perl module
		358
		359	void
		360	gdk_window_clear_hints (GdkWindow *window)
		361	CODE:
		362	gdk_window_set_geometry_hints (window, 0, 0);
		363
		364	gboolean
		365	gdk_net_wm_supports (GdkAtom property)
		366	CODE:
		367	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		368	RETVAL = gdk_net_wm_supports (property);
		369	#else
		370	RETVAL = 0;
		371	#endif
		372	OUTPUT:
		373	RETVAL
		374
129	GdkPixbuf_noinc *	375	GdkPixbuf_noinc *
130	transpose (GdkPixbuf *pb)	376	dealpha_expose (GdkPixbuf *pb)
131	CODE:	377	CODE:
		378	perlinterp_release ();
132	{	379	{
133	int w = gdk_pixbuf_get_width (pb);	380	int w = gdk_pixbuf_get_width (pb);
134	int h = gdk_pixbuf_get_height (pb);	381	int h = gdk_pixbuf_get_height (pb);
135	int bpp = gdk_pixbuf_get_n_channels (pb);	382	int bpp = gdk_pixbuf_get_n_channels (pb);
136	int x, y, i;	383	int x, y, i;
137	guchar src = gdk_pixbuf_get_pixels (pb), dst;	384	guchar src = gdk_pixbuf_get_pixels (pb), dst;
138	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	385	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
139		386
140	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	387	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
141		388
142	dst = gdk_pixbuf_get_pixels (RETVAL);	389	dst = gdk_pixbuf_get_pixels (RETVAL);
143	dstr = gdk_pixbuf_get_rowstride (RETVAL);	390	dstr = gdk_pixbuf_get_rowstride (RETVAL);
144		391
145	for (y = 0; y < h; y++)
146	for (x = 0; x < w; x++)	392	for (x = 0; x < w; x++)
		393	for (y = 0; y < h; y++)
147	for (i = 0; i < bpp; i++)	394	for (i = 0; i < 3; i++)
148	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	395	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
149	}	396	}
		397	perlinterp_acquire ();
150	OUTPUT:	398	OUTPUT:
151	RETVAL	399	RETVAL
152		400
153	GdkPixbuf_noinc *	401	GdkPixbuf_noinc *
154	flop (GdkPixbuf *pb)	402	rotate (GdkPixbuf *pb, int angle)
155	CODE:	403	CODE:
156	{	404	perlinterp_release ();
157	int w = gdk_pixbuf_get_width (pb);	405	if (angle < 0)
158	int h = gdk_pixbuf_get_height (pb);	406	angle += 360;
159	int bpp = gdk_pixbuf_get_n_channels (pb);	407	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
160	int x, y, i;	408	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
161	guchar src = gdk_pixbuf_get_pixels (pb), dst;	409	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
162	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	410	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
163		411	: angle);
164	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	412	perlinterp_acquire ();
165
166	dst = gdk_pixbuf_get_pixels (RETVAL);
167	dstr = gdk_pixbuf_get_rowstride (RETVAL);
168
169	for (y = 0; y < h; y++)
170	for (x = 0; x < w; x++)
171	for (i = 0; i < bpp; i++)
172	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
173	}
174	OUTPUT:	413	OUTPUT:
175	RETVAL	414	RETVAL
176		415
		416	const char *
		417	filetype (SV *image_data)
		418	CODE:
		419	{
		420	STRLEN data_len;
		421	U8 *data = SvPVbyte (image_data, data_len);
		422	static const unsigned char jxl_header[] = {
		423	0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20,
		424	0x0d, 0xa, 0x87, 0x0a, 0, 0, 0, 0x14,
		425	0x66, 0x74, 0x79, 0x70, 0x6a, 0x78, 0x6c, 0x20,
		426	0, 0, 0, 0, 0x6a, 0x78, 0x6c, 0x20,
		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";
		456	else if (data_len >= 13
		457	&& data[0] == 'G'
		458	&& data[1] == 'I'
		459	&& data[2] == 'F'
		460	&& data[3] == '8'
		461	//&& (data[4] == '7' \|\| data[4] == '9')
		462	&& data[5] == 'a')
		463	{
		464	RETVAL = "image/gif";
		465
		466	// now see if its animated - we require the netscape application header for this
		467	int ofs = 13;
		468
		469	if (data[10] & 0x80)
		470	ofs += (1 << ((data[10] & 7) + 1)) * 3;
		471
		472	if (data_len >= ofs + 2 + 1 + 11)
		473	{
		474
		475	// skip a graphic control extension block. we assume
		476	// there is at most one such block - while the NAB
		477	// has to come firstz, some files do not obey this
		478	if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
		479	ofs += 3 + data[ofs + 2] + 1;
		480
		481	if (data_len >= ofs + 2 + 1 + 11)
		482	if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
		483	RETVAL = "video/gif";
		484	}
		485	}
		486
		487	else
		488	XSRETURN_UNDEF;
		489	}
		490	OUTPUT:
		491	RETVAL
		492
177	GdkPixbuf_noinc *	493	GdkPixbuf_noinc *
178	load_jpeg (char *path, int thumbnail=0)	494	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		495	CODE:
		496	{
		497	#if WEBP
		498	STRLEN data_size;
		499	int alpha;
		500	WebPData data;
		501	WebPDemuxer *demux;
		502	WebPIterator iter;
		503	WebPDecoderConfig config;
		504	int inw, inh;
		505
		506	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		507	data.size = data_size;
		508
		509	perlinterp_release ();
		510
		511	RETVAL = 0;
		512
		513	if (!(demux = WebPDemux (&data)))
		514	goto err_demux;
		515
		516	if (!WebPDemuxGetFrame (demux, 1, &iter))
		517	goto err_iter;
		518
		519	if (!WebPInitDecoderConfig (&config))
		520	goto err_iter;
		521
		522	config.options.use_threads = 1;
		523
		524	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		525	goto err_iter;
		526
		527	inw = config.input.width;
		528	inh = config.input.height;
		529
		530	if (thumbnail)
		531	{
		532	if (inw * ih > inh * iw)
		533	ih = (iw * inh + inw - 1) / inw;
		534	else
		535	iw = (ih * inw + inh - 1) / inh;
		536
		537	config.options.bypass_filtering = 1;
		538	config.options.no_fancy_upsampling = 1;
		539
		540	config.options.use_scaling = 1;
		541	config.options.scaled_width = iw;
		542	config.options.scaled_height = ih;
		543	}
		544	else
		545	{
		546	iw = inw;
		547	ih = inh;
		548	}
		549
		550	alpha = !!config.input.has_alpha;
		551
		552	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		553	if (!RETVAL)
		554	goto err_iter;
		555
		556	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		557	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		558	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		559	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		560	config.output.is_external_memory = 1;
		561
		562	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		563	{
		564	g_object_unref (RETVAL);
		565	RETVAL = 0;
		566	goto err_iter;
		567	}
		568
		569	err_iter:
		570	WebPDemuxReleaseIterator (&iter);
		571	err_demux:
		572	WebPDemuxDelete (demux);
		573
		574	perlinterp_acquire ();
		575	#else
		576	croak ("load_webp: webp not enabled at compile time");
		577	#endif
		578	}
		579	OUTPUT:
		580	RETVAL
		581
		582	GdkPixbuf_noinc *
		583	decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		584	CODE:
		585	{
		586	#if JXL
		587	JxlDecoder *dec = JxlDecoderCreate (0);
		588	JxlBasicInfo info;
		589	const uint8_t next_in = (uint8_t )SvPVbyte_nolen (image_data);
		590	size_t avail_in = SvCUR (image_data);
		591	const char *error = 0;
		592	void *runner = 0;
		593	struct bmff_box box;
		594
		595	perlinterp_release ();
		596
		597	RETVAL = 0;
		598
		599	error = "JxlDecoderCreate failed";
		600	if (!dec)
		601	goto done;
		602
		603	runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
		604
		605	error = "JxlDecoderSetParallelRunner failed";
		606	if (JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner) != JXL_DEC_SUCCESS)
		607	goto done;
		608
		609	error = "JxlDecoderSubscribeEvents failed";
		610	if (JxlDecoderSubscribeEvents (dec, JXL_DEC_FULL_IMAGE \| JXL_DEC_BASIC_INFO) != JXL_DEC_SUCCESS)
		611	goto done;
		612
		613	error = "JxlDecoderSetInput failed";
		614	if (JxlDecoderSetInput (dec, next_in, avail_in) != JXL_DEC_SUCCESS)
		615	goto done;
		616
		617	for (;;)
		618	{
		619	JxlDecoderStatus status = JxlDecoderProcessInput (dec);
		620
		621	printf ("status %d\n",status);
		622
		623	switch (status)
		624	{
		625	case JXL_DEC_ERROR:
		626	error = "JxlDecoderProcessInput failed";
		627	goto done;
		628
		629	case JXL_DEC_NEED_MORE_INPUT:
		630	error = "incomplete file";
		631	goto done;
		632
		633	case JXL_DEC_SUCCESS:
		634	goto done;
		635
		636	case JXL_DEC_NEED_IMAGE_OUT_BUFFER:
		637	{
		638	error = "JxlDecoderGetBasicInfo failed";
		639	if (JxlDecoderGetBasicInfo (dec, &info) != JXL_DEC_SUCCESS)
		640	goto done;
		641
		642	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
		643	error = "unable to allocate pixbuf";
		644	if (!RETVAL)
		645	goto done;
		646
		647	JxlPixelFormat format = {
		648	info.alpha_bits ? 4 : 3,
		649	JXL_TYPE_UINT8,
		650	JXL_NATIVE_ENDIAN,
		651	gdk_pixbuf_get_rowstride (RETVAL)
		652	};
		653
		654	error = "JxlDecoderSetImageOutBuffer failed";
		655	if (JxlDecoderSetImageOutBuffer (
		656	dec,
		657	&format,
		658	gdk_pixbuf_get_pixels (RETVAL),
		659	gdk_pixbuf_get_byte_length (RETVAL)
		660	) != JXL_DEC_SUCCESS)
		661	goto done;
		662	}
		663	break;
		664
		665	default:
		666	error = "unexpected event";
		667	goto done;
		668	}
		669	}
		670
		671	done:
		672	if (dec)
		673	JxlDecoderDestroy (dec);
		674
		675	if (runner)
		676	JxlThreadParallelRunnerDestroy (runner);
		677
		678	perlinterp_acquire ();
		679
		680	if (error)
		681	{
		682	if (RETVAL)
		683	g_object_unref (RETVAL);
		684
		685	croak ("load_jxl: %s", error);
		686	}
		687	#else
		688	croak ("load_jxl: jpeg-xl not enabled at compile time");
		689	#endif
		690	}
		691	OUTPUT:
		692	RETVAL
		693
		694	GdkPixbuf_noinc *
		695	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
179	CODE:	696	CODE:
180	{	697	{
181	struct jpeg_decompress_struct cinfo;	698	struct jpeg_decompress_struct cinfo;
182	struct jpg_err_mgr jerr;	699	struct jpg_err_mgr jerr;
183	guchar *data;
184	int rs;	700	int rs;
185	FILE *fp;
186	volatile GdkPixbuf *pb = 0;	701	volatile GdkPixbuf *pb = 0;
		702	STRLEN data_len;
		703	guchar *data = SvPVbyte (image_data, data_len);
		704
187	RETVAL = 0;	705	RETVAL = 0;
188		706
189	if (!(fp = fopen (path, "rb")))	707	perlinterp_release ();
190	XSRETURN_UNDEF;
191		708
192	cinfo.err = jpeg_std_error (&jerr.err);	709	cinfo.err = jpeg_std_error (&jerr.err);
193		710
194	jerr.err.error_exit = cv_error_exit;	711	jerr.err.error_exit = cv_error_exit;
195	jerr.err.output_message = cv_error_output;	712	jerr.err.output_message = cv_error_output;
196		713
197	if ((rs = setjmp (jerr.setjmp_buffer)))	714	if ((rs = setjmp (jerr.setjmp_buffer)))
198	{	715	{
199	fclose (fp);
200	jpeg_destroy_decompress (&cinfo);	716	jpeg_destroy_decompress (&cinfo);
201		717
202	if (pb)	718	if (pb)
203	g_object_unref ((gpointer)pb);	719	g_object_unref ((gpointer)pb);
204		720
		721	perlinterp_acquire ();
205	XSRETURN_UNDEF;	722	XSRETURN_UNDEF;
206	}	723	}
207		724
		725	if (!data_len)
		726	longjmp (jerr.setjmp_buffer, 4);
		727
208	jpeg_create_decompress (&cinfo);	728	jpeg_create_decompress (&cinfo);
		729	cv_jpeg_mem_src (&cinfo, data, data_len);
209		730
210	jpeg_stdio_src (&cinfo, fp);
211	jpeg_read_header (&cinfo, TRUE);	731	jpeg_read_header (&cinfo, TRUE);
212		732
213	cinfo.dct_method = JDCT_DEFAULT;	733	cinfo.dct_method = JDCT_DEFAULT;
214	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	734	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
215	cinfo.do_block_smoothing = FALSE;	735	cinfo.do_block_smoothing = FALSE;
…		…
225	{	745	{
226	cinfo.dct_method = JDCT_FASTEST;	746	cinfo.dct_method = JDCT_FASTEST;
227	cinfo.do_fancy_upsampling = FALSE;	747	cinfo.do_fancy_upsampling = FALSE;
228		748
229	while (cinfo.scale_denom < 8	749	while (cinfo.scale_denom < 8
230	&& (cinfo.output_width >> 1) >= IW	750	&& cinfo.output_width >= iw*4
231	&& (cinfo.output_height >> 1) >= IH)	751	&& cinfo.output_height >= ih*4)
232	{	752	{
233	cinfo.scale_denom <<= 1;	753	cinfo.scale_denom <<= 1;
234	jpeg_calc_output_dimensions (&cinfo);	754	jpeg_calc_output_dimensions (&cinfo);
235	}	755	}
236	}	756	}
237		757
		758	if (cinfo.output_components != 3)
		759	longjmp (jerr.setjmp_buffer, 3);
		760
		761	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		762	{
		763	cinfo.out_color_space = JCS_CMYK;
		764	cinfo.output_components = 4;
		765	}
		766
238	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	767	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
239	if (!RETVAL)	768	if (!RETVAL)
240	longjmp (jerr.setjmp_buffer, 2);	769	longjmp (jerr.setjmp_buffer, 2);
241		770
242	data = gdk_pixbuf_get_pixels (RETVAL);	771	data = gdk_pixbuf_get_pixels (RETVAL);
243	rs = gdk_pixbuf_get_rowstride (RETVAL);	772	rs = gdk_pixbuf_get_rowstride (RETVAL);
244
245	if (cinfo.output_components != 3)
246	longjmp (jerr.setjmp_buffer, 3);
247		773
248	jpeg_start_decompress (&cinfo);	774	jpeg_start_decompress (&cinfo);
249		775
250	while (cinfo.output_scanline < cinfo.output_height)	776	while (cinfo.output_scanline < cinfo.output_height)
251	{	777	{
…		…
258	rp [3] = (guchar *)rp [2] + rs;	784	rp [3] = (guchar *)rp [2] + rs;
259		785
260	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	786	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
261	}	787	}
262		788
		789	if (cinfo.out_color_space == JCS_CMYK)
		790	{
		791	guchar end = data + cinfo.output_height rs;
		792
		793	while (data < end)
		794	{
		795	U32 c = data [0];
		796	U32 m = data [1];
		797	U32 y = data [2];
		798	U32 k = data [3];
		799
		800	if (0)
		801	if (cinfo.Adobe_transform == 2)
		802	{
		803	c ^= 0xff;
		804	m ^= 0xff;
		805	y ^= 0xff;
		806	k ^= 0xff;
		807	}
		808
		809	data [0] = (c * k + 0x80) / 0xff;
		810	data [1] = (m * k + 0x80) / 0xff;
		811	data [2] = (y * k + 0x80) / 0xff;
		812	data [3] = 0xff;
		813
		814	data += 4;
		815	}
		816	}
		817
263	jpeg_finish_decompress (&cinfo);	818	jpeg_finish_decompress (&cinfo);
264	fclose (fp);
265	jpeg_destroy_decompress (&cinfo);	819	jpeg_destroy_decompress (&cinfo);
		820	perlinterp_acquire ();
266	}	821	}
267	OUTPUT:	822	OUTPUT:
268	RETVAL	823	RETVAL
269		824
		825	void
		826	compare (GdkPixbuf a, GdkPixbuf b)
		827	PPCODE:
		828	perlinterp_release ();
		829	{
		830	int w = gdk_pixbuf_get_width (a);
		831	int h = gdk_pixbuf_get_height (a);
		832
		833	int sa = gdk_pixbuf_get_rowstride (a);
		834	int sb = gdk_pixbuf_get_rowstride (b);
		835
		836	guchar *pa = gdk_pixbuf_get_pixels (a);
		837	guchar *pb = gdk_pixbuf_get_pixels (b);
		838
		839	int x, y;
		840
		841	assert (w == gdk_pixbuf_get_width (b));
		842	assert (h == gdk_pixbuf_get_height (b));
		843
		844	assert (gdk_pixbuf_get_n_channels (a) == 3);
		845	assert (gdk_pixbuf_get_n_channels (b) == 3);
		846
		847	double diff = 0.;
		848	int peak = 0;
		849
		850	if (w && h)
		851	for (y = 0; y < h; y++)
		852	{
		853	guchar pa_ = pa + y sa;
		854	guchar pb_ = pb + y sb;
		855
		856	for (x = 0; x < w; x++)
		857	{
		858	int d;
		859
		860	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		861	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		862	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		863	}
		864	}
		865
		866	perlinterp_acquire ();
		867
		868	EXTEND (SP, 2);
		869	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		870	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		871	}
		872
270	#############################################################################	873	#############################################################################
271		874
272	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	875	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		876
		877	# currently only works for filenames (octet strings)
273		878
274	SV *	879	SV *
275	foldcase (SV *pathsv)	880	foldcase (SV *pathsv)
276	PROTOTYPE: $	881	PROTOTYPE: $
277	CODE:	882	CODE:
278	{	883	{
279	STRLEN plen;	884	STRLEN plen;
280	U8 *path = SvPVutf8 (pathsv, plen);	885	U8 path = (U8 )SvPV (pathsv, plen);
281	U8 *pend = path + plen;	886	U8 *pend = path + plen;
282	U8 dst [plen * 6 * 3], *dstp = dst;	887	U8 dst [plen * 8 * 3], *dstp = dst;
283		888
284	while (path < pend)	889	while (path < pend)
285	{	890	{
		891	U8 ch = *path;
		892
286	if (path >= '0' && path <= '9')	893	if (ch >= 'a' && ch <= 'z')
		894	dstp++ = path++;
		895	else if (ch >= 'A' && ch <= 'Z')
		896	dstp++ = path++ + ('a' - 'A');
		897	else if (ch >= '0' && ch <= '9')
287	{	898	{
		899	/* version sort, up to 8 digits */
288	STRLEN el, nl = 0;	900	STRLEN el, nl = 0;
289	while (path >= '0' && path <= '9')	901	while (path >= '0' && path <= '9' && path < pend)
290	path++, nl++;	902	path++, nl++;
291		903
292	for (el = nl; el < 6; el++)	904	for (el = nl; el < 8; el++)
293	*dstp++ = '0';	905	*dstp++ = '0';
294		906
295	memcpy (dstp, path - nl, nl);	907	memcpy (dstp, path - nl, nl);
296	dstp += nl;	908	dstp += nl;
297	}	909	}
		910	else
		911	dstp++ = path++;
		912	#if 0
298	else	913	else
299	{	914	{
300	STRLEN cl;	915	STRLEN cl;
301	to_utf8_fold (path, dstp, &cl);	916	to_utf8_fold (path, dstp, &cl);
302	dstp += cl;	917	dstp += cl;
303	path += is_utf8_char (path);	918	path += is_utf8_char (path);
304	}	919	}
		920	#endif
305	}	921	}
306		922
307	RETVAL = newSVpvn (dst, dstp - dst);	923	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
308	}	924	}
309	OUTPUT:	925	OUTPUT:
310	RETVAL	926	RETVAL
311		927
312	GdkPixbuf_noinc *	928	GdkPixbuf_noinc *
313	p7_to_pb (int w, int h, guchar *src)	929	p7_to_pb (int w, int h, SV *src_sv)
		930	PROTOTYPE: @
314	CODE:	931	CODE:
315	{	932	{
316	int x, y;	933	int x, y;
317	guchar dst, d;	934	guchar dst, d;
318	int dstr;	935	int dstr;
		936	guchar src = (guchar )SvPVbyte_nolen (src_sv);
319		937
320	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	938	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
321	dst = gdk_pixbuf_get_pixels (RETVAL);	939	dst = gdk_pixbuf_get_pixels (RETVAL);
322	dstr = gdk_pixbuf_get_rowstride (RETVAL);	940	dstr = gdk_pixbuf_get_rowstride (RETVAL);
323		941
…		…
332	}	950	}
333	}	951	}
334	OUTPUT:	952	OUTPUT:
335	RETVAL	953	RETVAL
336		954
		955	#############################################################################
		956
		957	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		958
		959	void
		960	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		961	CODE:
		962	{
		963	int w = gdk_pixbuf_get_width (pb);
		964	int h = gdk_pixbuf_get_height (pb);
		965	int x, y, i;
		966	guchar *dst;
		967	int bpp = gdk_pixbuf_get_n_channels (pb);
		968	guchar *src = gdk_pixbuf_get_pixels (pb);
		969	int sstr = gdk_pixbuf_get_rowstride (pb);
		970
		971	a85_init ();
		972
		973	for (y = 0; y < h; y++)
		974	for (x = 0; x < w; x++)
		975	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		976	a85_push (fp, src [x * bpp + y * sstr + i]);
		977
		978	a85_finish (fp);
		979	}
		980
		981	void
		982	dump_binary (PerlIO fp, GdkPixbuf pb)
		983	CODE:
		984	{
		985	int w = gdk_pixbuf_get_width (pb);
		986	int h = gdk_pixbuf_get_height (pb);
		987	int x, y, i;
		988	guchar *dst;
		989	int bpp = gdk_pixbuf_get_n_channels (pb);
		990	guchar *src = gdk_pixbuf_get_pixels (pb);
		991	int sstr = gdk_pixbuf_get_rowstride (pb);
		992
		993	for (y = 0; y < h; y++)
		994	for (x = 0; x < w; x++)
		995	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		996	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		997	}
		998
		999	#############################################################################
		1000
		1001	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		1002
337	SV *	1003	SV *
338	pb_to_p7 (GdkPixbuf *pb)	1004	pb_to_hv84 (GdkPixbuf *pb)
339	CODE:	1005	CODE:
340	{	1006	{
341	int w = gdk_pixbuf_get_width (pb);	1007	int w = gdk_pixbuf_get_width (pb);
342	int h = gdk_pixbuf_get_height (pb);	1008	int h = gdk_pixbuf_get_height (pb);
343	int x, y;	1009	int x, y;
344	guchar *dst;	1010	guchar *dst;
345	int bpp = gdk_pixbuf_get_n_channels (pb);	1011	int bpp = gdk_pixbuf_get_n_channels (pb);
346	guchar *src = gdk_pixbuf_get_pixels (pb);	1012	guchar *src = gdk_pixbuf_get_pixels (pb);
347	int sstr = gdk_pixbuf_get_rowstride (pb);	1013	int sstr = gdk_pixbuf_get_rowstride (pb);
348	int Er[IW], Eg[IW], Eb[IW];
349	int seed = 77;
350
351	RETVAL = newSV (w * h);
352	SvPOK_only (RETVAL);
353	SvCUR_set (RETVAL, w * h);
354
355	dst = SvPVX (RETVAL);
356
357	memset (Er, 0, sizeof (int) * IW);
358	memset (Eg, 0, sizeof (int) * IW);
359	memset (Eb, 0, sizeof (int) * IW);
360
361	/* some primitive error distribution + random dithering */
362
363	for (y = 0; y < h; y++)
364	{
365	int er = 0, eg = 0, eb = 0;
366
367	for (x = 0; x < w; x++)
368	{
369	int r, g, b;
370	guchar p = src + x bpp + y * sstr;
371
372	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
373	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
374	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
375
376	r = r > 7 ? 7 : r < 0 ? 0 : r;
377	g = g > 7 ? 7 : g < 0 ? 0 : g;
378	b = b > 3 ? 3 : b < 0 ? 0 : b;
379
380	er += p[0] - (r * 255 + 4) / 7;
381	eg += p[1] - (g * 255 + 4) / 7;
382	eb += p[2] - (b * 255 + 2) / 3;
383
384	Er[x] = er >> 1; er -= (er + 1) >> 1;
385	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
386	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
387
388	*dst++ = r << 5 \| g << 2 \| b;
389	}
390	}
391	}
392	OUTPUT:
393	RETVAL
394
395	SV *
396	make_histogram (SV *ar)
397	CODE:
398	{
399	int i;
400	AV av, result;
401
402	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
403	croak ("Not an array ref as first argument to make_histogram");
404
405	av = (AV *) SvRV (ar);
406	result = newAV ();
407
408	for (i = 0; i <= av_len (av); ++i)
409	{
410	const int HISTSIZE = 64;
411
412	int j;
413	SV sv = av_fetch (av, i, 1);
414	STRLEN len;
415	char *buf = SvPVbyte (sv, len);
416
417	int tmphist[HISTSIZE];
418	float *hist;
419
420	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
421	SvPOK_on (histsv);
422	SvCUR_set (histsv, HISTSIZE * sizeof (float));
423	hist = (float *)SvPVX (histsv);
424
425	Zero (tmphist, sizeof (tmphist), char);
426
427	for (j = len; j--; )
428	{
429	unsigned int idx
430	= ((*buf & 0xc0) >> 2)
431	\| ((*buf & 0x18) >> 1)
432	\| (*buf & 0x03);
433
434	++tmphist[idx];
435	++buf;
436	}
437
438	for (j = 0; j < HISTSIZE; ++j)
439	hist[j] = (float)tmphist[j] / (len + 1e-30);
440
441	av_push (result, histsv);
442	}
443
444	RETVAL = newRV_noinc ((SV *)result);
445	}
446	OUTPUT:
447	RETVAL
448
449	#############################################################################
450
451	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
452
453	void
454	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
455	CODE:
456	{
457	int w = gdk_pixbuf_get_width (pb);
458	int h = gdk_pixbuf_get_height (pb);
459	int x, y, i;
460	guchar *dst;
461	int bpp = gdk_pixbuf_get_n_channels (pb);
462	guchar *src = gdk_pixbuf_get_pixels (pb);
463	int sstr = gdk_pixbuf_get_rowstride (pb);
464
465	a85_init ();
466
467	for (y = 0; y < h; y++)
468	for (x = 0; x < w; x++)
469	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
470	a85_push (fp, src [x * bpp + y * sstr + i]);
471
472	a85_finish (fp);
473	}
474
475	void
476	dump_binary (PerlIO fp, GdkPixbuf pb)
477	CODE:
478	{
479	int w = gdk_pixbuf_get_width (pb);
480	int h = gdk_pixbuf_get_height (pb);
481	int x, y, i;
482	guchar *dst;
483	int bpp = gdk_pixbuf_get_n_channels (pb);
484	guchar *src = gdk_pixbuf_get_pixels (pb);
485	int sstr = gdk_pixbuf_get_rowstride (pb);
486
487	for (y = 0; y < h; y++)
488	for (x = 0; x < w; x++)
489	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
490	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
491	}
492
493	#############################################################################
494
495	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
496
497	SV *
498	pb_to_hv84 (GdkPixbuf *pb)
499	CODE:
500	{
501	int w = gdk_pixbuf_get_width (pb);
502	int h = gdk_pixbuf_get_height (pb);
503	int x, y;
504	guchar *dst;
505	int bpp = gdk_pixbuf_get_n_channels (pb);
506	guchar *src = gdk_pixbuf_get_pixels (pb);
507	int sstr = gdk_pixbuf_get_rowstride (pb);
508		1014
509	RETVAL = newSV (6 * 8 * 12 / 8);	1015	RETVAL = newSV (6 * 8 * 12 / 8);
510	SvPOK_only (RETVAL);	1016	SvPOK_only (RETVAL);
511	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	1017	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
512		1018
513	dst = SvPVX (RETVAL);	1019	dst = (guchar *)SvPVX (RETVAL);
514		1020
515	/* some primitive error distribution + random dithering */	1021	/* some primitive error distribution + random dithering */
516		1022
517	for (y = 0; y < h; y++)	1023	for (y = 0; y < h; y++)
518	{	1024	{
…		…
576	}	1082	}
577	}	1083	}
578	OUTPUT:	1084	OUTPUT:
579	RETVAL	1085	RETVAL
580		1086
		1087	#############################################################################
581		1088
		1089	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
582		1090
		1091	SV *
		1092	extract_features (SV *ar)
		1093	CODE:
		1094	{
		1095	int i;
		1096	AV av, result;
		1097
		1098	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		1099	croak ("Not an array ref as first argument to extract_features");
		1100
		1101	av = (AV *) SvRV (ar);
		1102	result = newAV ();
		1103
		1104	for (i = 0; i <= av_len (av); ++i)
		1105	{
		1106	SV sv = av_fetch (av, i, 1);
		1107	SV histsv = newSV (9 sizeof (float) + 1);
		1108
		1109	SvPOK_on (histsv);
		1110	SvCUR_set (histsv, 9 * sizeof (float));
		1111	float hist = (float )SvPVX (histsv);
		1112
		1113	struct feature f_h, f_s, f_v;
		1114	feature_init (&f_h);
		1115	feature_init (&f_s);
		1116	feature_init (&f_v);
		1117
		1118	{
		1119	STRLEN len;
		1120	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		1121	while (len >= 3)
		1122	{
		1123	unsigned int r, g, b, h, s, v;
		1124	r = buf++; g = buf++; b = *buf++;
		1125	rgb_to_hsv (r, g, b, &h, &s, &v);
		1126
		1127	feature_update_pass_1 (&f_h, h);
		1128	feature_update_pass_1 (&f_s, s);
		1129	feature_update_pass_1 (&f_v, v);
		1130
		1131	len -= 3;
		1132	}
		1133
		1134	feature_finish_pass_1 (&f_h);
		1135	feature_finish_pass_1 (&f_s);
		1136	feature_finish_pass_1 (&f_v);
		1137	}
		1138
		1139	{
		1140	STRLEN len;
		1141	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		1142	while (len >= 3)
		1143	{
		1144	unsigned int r, g, b, h, s, v;
		1145	r = buf++; g = buf++; b = *buf++;
		1146	rgb_to_hsv (r, g, b, &h, &s, &v);
		1147
		1148	feature_update_pass_2 (&f_h, h);
		1149	feature_update_pass_2 (&f_s, s);
		1150	feature_update_pass_2 (&f_v, v);
		1151
		1152	len -= 3;
		1153	}
		1154
		1155	feature_finish_pass_2 (&f_h);
		1156	feature_finish_pass_2 (&f_s);
		1157	feature_finish_pass_2 (&f_v);
		1158	}
		1159
		1160	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		1161	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		1162	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
		1163
		1164	av_push (result, histsv);
		1165	}
		1166
		1167	RETVAL = newRV_noinc ((SV *)result);
		1168	}
		1169	OUTPUT:
		1170	RETVAL
		1171

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Comparing CV/CV.xs (file contents): Revision 1.18 by root, Wed Jul 20 09:06:37 2005 UTC vs. Revision 1.62 by root, Sun Jul 25 11:32:46 2021 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.18 by root, Wed Jul 20 09:06:37 2005 UTC vs.
Revision 1.62 by root, Sun Jul 25 11:32:46 2021 UTC