[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 1.61 by root, Sun Jul 25 11:24:48 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	// skip a rare first graphic control extension block
		475	// we assume there is exactly one block
		476	if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
		477	ofs += 3 + data[ofs + 2] + 1;
		478
		479	if (data_len >= ofs + 2 + 1 + 11)
		480	if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
		481	RETVAL = "video/gif";
		482	}
		483	}
		484
		485	else
		486	XSRETURN_UNDEF;
		487	}
		488	OUTPUT:
		489	RETVAL
		490
177	GdkPixbuf_noinc *	491	GdkPixbuf_noinc *
178	load_jpeg (char *path, int thumbnail=0)	492	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		493	CODE:
		494	{
		495	#if WEBP
		496	STRLEN data_size;
		497	int alpha;
		498	WebPData data;
		499	WebPDemuxer *demux;
		500	WebPIterator iter;
		501	WebPDecoderConfig config;
		502	int inw, inh;
		503
		504	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		505	data.size = data_size;
		506
		507	perlinterp_release ();
		508
		509	RETVAL = 0;
		510
		511	if (!(demux = WebPDemux (&data)))
		512	goto err_demux;
		513
		514	if (!WebPDemuxGetFrame (demux, 1, &iter))
		515	goto err_iter;
		516
		517	if (!WebPInitDecoderConfig (&config))
		518	goto err_iter;
		519
		520	config.options.use_threads = 1;
		521
		522	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		523	goto err_iter;
		524
		525	inw = config.input.width;
		526	inh = config.input.height;
		527
		528	if (thumbnail)
		529	{
		530	if (inw * ih > inh * iw)
		531	ih = (iw * inh + inw - 1) / inw;
		532	else
		533	iw = (ih * inw + inh - 1) / inh;
		534
		535	config.options.bypass_filtering = 1;
		536	config.options.no_fancy_upsampling = 1;
		537
		538	config.options.use_scaling = 1;
		539	config.options.scaled_width = iw;
		540	config.options.scaled_height = ih;
		541	}
		542	else
		543	{
		544	iw = inw;
		545	ih = inh;
		546	}
		547
		548	alpha = !!config.input.has_alpha;
		549
		550	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		551	if (!RETVAL)
		552	goto err_iter;
		553
		554	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		555	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		556	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		557	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		558	config.output.is_external_memory = 1;
		559
		560	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		561	{
		562	g_object_unref (RETVAL);
		563	RETVAL = 0;
		564	goto err_iter;
		565	}
		566
		567	err_iter:
		568	WebPDemuxReleaseIterator (&iter);
		569	err_demux:
		570	WebPDemuxDelete (demux);
		571
		572	perlinterp_acquire ();
		573	#else
		574	croak ("load_webp: webp not enabled at compile time");
		575	#endif
		576	}
		577	OUTPUT:
		578	RETVAL
		579
		580	GdkPixbuf_noinc *
		581	decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		582	CODE:
		583	{
		584	#if JXL
		585	JxlDecoder *dec = JxlDecoderCreate (0);
		586	JxlBasicInfo info;
		587	const uint8_t next_in = (uint8_t )SvPVbyte_nolen (image_data);
		588	size_t avail_in = SvCUR (image_data);
		589	const char *error = 0;
		590	void *runner = 0;
		591	struct bmff_box box;
		592
		593	perlinterp_release ();
		594
		595	RETVAL = 0;
		596
		597	error = "JxlDecoderCreate failed";
		598	if (!dec)
		599	goto done;
		600
		601	runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
		602
		603	error = "JxlDecoderSetParallelRunner failed";
		604	if (JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner) != JXL_DEC_SUCCESS)
		605	goto done;
		606
		607	error = "JxlDecoderSubscribeEvents failed";
		608	if (JxlDecoderSubscribeEvents (dec, JXL_DEC_FULL_IMAGE \| JXL_DEC_BASIC_INFO) != JXL_DEC_SUCCESS)
		609	goto done;
		610
		611	error = "JxlDecoderSetInput failed";
		612	if (JxlDecoderSetInput (dec, next_in, avail_in) != JXL_DEC_SUCCESS)
		613	goto done;
		614
		615	for (;;)
		616	{
		617	JxlDecoderStatus status = JxlDecoderProcessInput (dec);
		618
		619	printf ("status %d\n",status);
		620
		621	switch (status)
		622	{
		623	case JXL_DEC_ERROR:
		624	error = "JxlDecoderProcessInput failed";
		625	goto done;
		626
		627	case JXL_DEC_NEED_MORE_INPUT:
		628	error = "incomplete file";
		629	goto done;
		630
		631	case JXL_DEC_SUCCESS:
		632	goto done;
		633
		634	case JXL_DEC_NEED_IMAGE_OUT_BUFFER:
		635	{
		636	error = "JxlDecoderGetBasicInfo failed";
		637	if (JxlDecoderGetBasicInfo (dec, &info) != JXL_DEC_SUCCESS)
		638	goto done;
		639
		640	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
		641	error = "unable to allocate pixbuf";
		642	if (!RETVAL)
		643	goto done;
		644
		645	JxlPixelFormat format = {
		646	info.alpha_bits ? 4 : 3,
		647	JXL_TYPE_UINT8,
		648	JXL_NATIVE_ENDIAN,
		649	gdk_pixbuf_get_rowstride (RETVAL)
		650	};
		651
		652	error = "JxlDecoderSetImageOutBuffer failed";
		653	if (JxlDecoderSetImageOutBuffer (
		654	dec,
		655	&format,
		656	gdk_pixbuf_get_pixels (RETVAL),
		657	gdk_pixbuf_get_byte_length (RETVAL)
		658	) != JXL_DEC_SUCCESS)
		659	goto done;
		660	}
		661	break;
		662
		663	default:
		664	error = "unexpected event";
		665	goto done;
		666	}
		667	}
		668
		669	done:
		670	if (dec)
		671	JxlDecoderDestroy (dec);
		672
		673	if (runner)
		674	JxlThreadParallelRunnerDestroy (runner);
		675
		676	perlinterp_acquire ();
		677
		678	if (error)
		679	{
		680	if (RETVAL)
		681	g_object_unref (RETVAL);
		682
		683	croak ("load_jxl: %s", error);
		684	}
		685	#else
		686	croak ("load_jxl: jpeg-xl not enabled at compile time");
		687	#endif
		688	}
		689	OUTPUT:
		690	RETVAL
		691
		692	GdkPixbuf_noinc *
		693	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
179	CODE:	694	CODE:
180	{	695	{
181	struct jpeg_decompress_struct cinfo;	696	struct jpeg_decompress_struct cinfo;
182	struct jpg_err_mgr jerr;	697	struct jpg_err_mgr jerr;
183	guchar *data;
184	int rs;	698	int rs;
185	FILE *fp;
186	volatile GdkPixbuf *pb = 0;	699	volatile GdkPixbuf *pb = 0;
		700	STRLEN data_len;
		701	guchar *data = SvPVbyte (image_data, data_len);
		702
187	RETVAL = 0;	703	RETVAL = 0;
188		704
189	if (!(fp = fopen (path, "rb")))	705	perlinterp_release ();
190	XSRETURN_UNDEF;
191		706
192	cinfo.err = jpeg_std_error (&jerr.err);	707	cinfo.err = jpeg_std_error (&jerr.err);
193		708
194	jerr.err.error_exit = cv_error_exit;	709	jerr.err.error_exit = cv_error_exit;
195	jerr.err.output_message = cv_error_output;	710	jerr.err.output_message = cv_error_output;
196		711
197	if ((rs = setjmp (jerr.setjmp_buffer)))	712	if ((rs = setjmp (jerr.setjmp_buffer)))
198	{	713	{
199	fclose (fp);
200	jpeg_destroy_decompress (&cinfo);	714	jpeg_destroy_decompress (&cinfo);
201		715
202	if (pb)	716	if (pb)
203	g_object_unref ((gpointer)pb);	717	g_object_unref ((gpointer)pb);
204		718
		719	perlinterp_acquire ();
205	XSRETURN_UNDEF;	720	XSRETURN_UNDEF;
206	}	721	}
207		722
		723	if (!data_len)
		724	longjmp (jerr.setjmp_buffer, 4);
		725
208	jpeg_create_decompress (&cinfo);	726	jpeg_create_decompress (&cinfo);
		727	cv_jpeg_mem_src (&cinfo, data, data_len);
209		728
210	jpeg_stdio_src (&cinfo, fp);
211	jpeg_read_header (&cinfo, TRUE);	729	jpeg_read_header (&cinfo, TRUE);
212		730
213	cinfo.dct_method = JDCT_DEFAULT;	731	cinfo.dct_method = JDCT_DEFAULT;
214	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	732	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
215	cinfo.do_block_smoothing = FALSE;	733	cinfo.do_block_smoothing = FALSE;
…		…
225	{	743	{
226	cinfo.dct_method = JDCT_FASTEST;	744	cinfo.dct_method = JDCT_FASTEST;
227	cinfo.do_fancy_upsampling = FALSE;	745	cinfo.do_fancy_upsampling = FALSE;
228		746
229	while (cinfo.scale_denom < 8	747	while (cinfo.scale_denom < 8
230	&& (cinfo.output_width >> 1) >= IW	748	&& cinfo.output_width >= iw*4
231	&& (cinfo.output_height >> 1) >= IH)	749	&& cinfo.output_height >= ih*4)
232	{	750	{
233	cinfo.scale_denom <<= 1;	751	cinfo.scale_denom <<= 1;
234	jpeg_calc_output_dimensions (&cinfo);	752	jpeg_calc_output_dimensions (&cinfo);
235	}	753	}
236	}	754	}
237		755
		756	if (cinfo.output_components != 3)
		757	longjmp (jerr.setjmp_buffer, 3);
		758
		759	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		760	{
		761	cinfo.out_color_space = JCS_CMYK;
		762	cinfo.output_components = 4;
		763	}
		764
238	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	765	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
239	if (!RETVAL)	766	if (!RETVAL)
240	longjmp (jerr.setjmp_buffer, 2);	767	longjmp (jerr.setjmp_buffer, 2);
241		768
242	data = gdk_pixbuf_get_pixels (RETVAL);	769	data = gdk_pixbuf_get_pixels (RETVAL);
243	rs = gdk_pixbuf_get_rowstride (RETVAL);	770	rs = gdk_pixbuf_get_rowstride (RETVAL);
244
245	if (cinfo.output_components != 3)
246	longjmp (jerr.setjmp_buffer, 3);
247		771
248	jpeg_start_decompress (&cinfo);	772	jpeg_start_decompress (&cinfo);
249		773
250	while (cinfo.output_scanline < cinfo.output_height)	774	while (cinfo.output_scanline < cinfo.output_height)
251	{	775	{
…		…
258	rp [3] = (guchar *)rp [2] + rs;	782	rp [3] = (guchar *)rp [2] + rs;
259		783
260	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	784	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
261	}	785	}
262		786
		787	if (cinfo.out_color_space == JCS_CMYK)
		788	{
		789	guchar end = data + cinfo.output_height rs;
		790
		791	while (data < end)
		792	{
		793	U32 c = data [0];
		794	U32 m = data [1];
		795	U32 y = data [2];
		796	U32 k = data [3];
		797
		798	if (0)
		799	if (cinfo.Adobe_transform == 2)
		800	{
		801	c ^= 0xff;
		802	m ^= 0xff;
		803	y ^= 0xff;
		804	k ^= 0xff;
		805	}
		806
		807	data [0] = (c * k + 0x80) / 0xff;
		808	data [1] = (m * k + 0x80) / 0xff;
		809	data [2] = (y * k + 0x80) / 0xff;
		810	data [3] = 0xff;
		811
		812	data += 4;
		813	}
		814	}
		815
263	jpeg_finish_decompress (&cinfo);	816	jpeg_finish_decompress (&cinfo);
264	fclose (fp);
265	jpeg_destroy_decompress (&cinfo);	817	jpeg_destroy_decompress (&cinfo);
		818	perlinterp_acquire ();
266	}	819	}
267	OUTPUT:	820	OUTPUT:
268	RETVAL	821	RETVAL
269		822
		823	void
		824	compare (GdkPixbuf a, GdkPixbuf b)
		825	PPCODE:
		826	perlinterp_release ();
		827	{
		828	int w = gdk_pixbuf_get_width (a);
		829	int h = gdk_pixbuf_get_height (a);
		830
		831	int sa = gdk_pixbuf_get_rowstride (a);
		832	int sb = gdk_pixbuf_get_rowstride (b);
		833
		834	guchar *pa = gdk_pixbuf_get_pixels (a);
		835	guchar *pb = gdk_pixbuf_get_pixels (b);
		836
		837	int x, y;
		838
		839	assert (w == gdk_pixbuf_get_width (b));
		840	assert (h == gdk_pixbuf_get_height (b));
		841
		842	assert (gdk_pixbuf_get_n_channels (a) == 3);
		843	assert (gdk_pixbuf_get_n_channels (b) == 3);
		844
		845	double diff = 0.;
		846	int peak = 0;
		847
		848	if (w && h)
		849	for (y = 0; y < h; y++)
		850	{
		851	guchar pa_ = pa + y sa;
		852	guchar pb_ = pb + y sb;
		853
		854	for (x = 0; x < w; x++)
		855	{
		856	int d;
		857
		858	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		859	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		860	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		861	}
		862	}
		863
		864	perlinterp_acquire ();
		865
		866	EXTEND (SP, 2);
		867	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		868	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		869	}
		870
270	#############################################################################	871	#############################################################################
271		872
272	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	873	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		874
		875	# currently only works for filenames (octet strings)
273		876
274	SV *	877	SV *
275	foldcase (SV *pathsv)	878	foldcase (SV *pathsv)
276	PROTOTYPE: $	879	PROTOTYPE: $
277	CODE:	880	CODE:
278	{	881	{
279	STRLEN plen;	882	STRLEN plen;
280	U8 *path = SvPVutf8 (pathsv, plen);	883	U8 path = (U8 )SvPV (pathsv, plen);
281	U8 *pend = path + plen;	884	U8 *pend = path + plen;
282	U8 dst [plen * 6 * 3], *dstp = dst;	885	U8 dst [plen * 8 * 3], *dstp = dst;
283		886
284	while (path < pend)	887	while (path < pend)
285	{	888	{
		889	U8 ch = *path;
		890
286	if (path >= '0' && path <= '9')	891	if (ch >= 'a' && ch <= 'z')
		892	dstp++ = path++;
		893	else if (ch >= 'A' && ch <= 'Z')
		894	dstp++ = path++ + ('a' - 'A');
		895	else if (ch >= '0' && ch <= '9')
287	{	896	{
		897	/* version sort, up to 8 digits */
288	STRLEN el, nl = 0;	898	STRLEN el, nl = 0;
289	while (path >= '0' && path <= '9')	899	while (path >= '0' && path <= '9' && path < pend)
290	path++, nl++;	900	path++, nl++;
291		901
292	for (el = nl; el < 6; el++)	902	for (el = nl; el < 8; el++)
293	*dstp++ = '0';	903	*dstp++ = '0';
294		904
295	memcpy (dstp, path - nl, nl);	905	memcpy (dstp, path - nl, nl);
296	dstp += nl;	906	dstp += nl;
297	}	907	}
		908	else
		909	dstp++ = path++;
		910	#if 0
298	else	911	else
299	{	912	{
300	STRLEN cl;	913	STRLEN cl;
301	to_utf8_fold (path, dstp, &cl);	914	to_utf8_fold (path, dstp, &cl);
302	dstp += cl;	915	dstp += cl;
303	path += is_utf8_char (path);	916	path += is_utf8_char (path);
304	}	917	}
		918	#endif
305	}	919	}
306		920
307	RETVAL = newSVpvn (dst, dstp - dst);	921	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
308	}	922	}
309	OUTPUT:	923	OUTPUT:
310	RETVAL	924	RETVAL
311		925
312	GdkPixbuf_noinc *	926	GdkPixbuf_noinc *
313	p7_to_pb (int w, int h, guchar *src)	927	p7_to_pb (int w, int h, SV *src_sv)
		928	PROTOTYPE: @
314	CODE:	929	CODE:
315	{	930	{
316	int x, y;	931	int x, y;
317	guchar dst, d;	932	guchar dst, d;
318	int dstr;	933	int dstr;
		934	guchar src = (guchar )SvPVbyte_nolen (src_sv);
319		935
320	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	936	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
321	dst = gdk_pixbuf_get_pixels (RETVAL);	937	dst = gdk_pixbuf_get_pixels (RETVAL);
322	dstr = gdk_pixbuf_get_rowstride (RETVAL);	938	dstr = gdk_pixbuf_get_rowstride (RETVAL);
323		939
…		…
332	}	948	}
333	}	949	}
334	OUTPUT:	950	OUTPUT:
335	RETVAL	951	RETVAL
336		952
		953	#############################################################################
		954
		955	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		956
		957	void
		958	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		959	CODE:
		960	{
		961	int w = gdk_pixbuf_get_width (pb);
		962	int h = gdk_pixbuf_get_height (pb);
		963	int x, y, i;
		964	guchar *dst;
		965	int bpp = gdk_pixbuf_get_n_channels (pb);
		966	guchar *src = gdk_pixbuf_get_pixels (pb);
		967	int sstr = gdk_pixbuf_get_rowstride (pb);
		968
		969	a85_init ();
		970
		971	for (y = 0; y < h; y++)
		972	for (x = 0; x < w; x++)
		973	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		974	a85_push (fp, src [x * bpp + y * sstr + i]);
		975
		976	a85_finish (fp);
		977	}
		978
		979	void
		980	dump_binary (PerlIO fp, GdkPixbuf pb)
		981	CODE:
		982	{
		983	int w = gdk_pixbuf_get_width (pb);
		984	int h = gdk_pixbuf_get_height (pb);
		985	int x, y, i;
		986	guchar *dst;
		987	int bpp = gdk_pixbuf_get_n_channels (pb);
		988	guchar *src = gdk_pixbuf_get_pixels (pb);
		989	int sstr = gdk_pixbuf_get_rowstride (pb);
		990
		991	for (y = 0; y < h; y++)
		992	for (x = 0; x < w; x++)
		993	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		994	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		995	}
		996
		997	#############################################################################
		998
		999	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		1000
337	SV *	1001	SV *
338	pb_to_p7 (GdkPixbuf *pb)	1002	pb_to_hv84 (GdkPixbuf *pb)
339	CODE:	1003	CODE:
340	{	1004	{
341	int w = gdk_pixbuf_get_width (pb);	1005	int w = gdk_pixbuf_get_width (pb);
342	int h = gdk_pixbuf_get_height (pb);	1006	int h = gdk_pixbuf_get_height (pb);
343	int x, y;	1007	int x, y;
344	guchar *dst;	1008	guchar *dst;
345	int bpp = gdk_pixbuf_get_n_channels (pb);	1009	int bpp = gdk_pixbuf_get_n_channels (pb);
346	guchar *src = gdk_pixbuf_get_pixels (pb);	1010	guchar *src = gdk_pixbuf_get_pixels (pb);
347	int sstr = gdk_pixbuf_get_rowstride (pb);	1011	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		1012
509	RETVAL = newSV (6 * 8 * 12 / 8);	1013	RETVAL = newSV (6 * 8 * 12 / 8);
510	SvPOK_only (RETVAL);	1014	SvPOK_only (RETVAL);
511	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	1015	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
512		1016
513	dst = SvPVX (RETVAL);	1017	dst = (guchar *)SvPVX (RETVAL);
514		1018
515	/* some primitive error distribution + random dithering */	1019	/* some primitive error distribution + random dithering */
516		1020
517	for (y = 0; y < h; y++)	1021	for (y = 0; y < h; y++)
518	{	1022	{
…		…
576	}	1080	}
577	}	1081	}
578	OUTPUT:	1082	OUTPUT:
579	RETVAL	1083	RETVAL
580		1084
		1085	#############################################################################
581		1086
		1087	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
582		1088
		1089	SV *
		1090	extract_features (SV *ar)
		1091	CODE:
		1092	{
		1093	int i;
		1094	AV av, result;
		1095
		1096	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		1097	croak ("Not an array ref as first argument to extract_features");
		1098
		1099	av = (AV *) SvRV (ar);
		1100	result = newAV ();
		1101
		1102	for (i = 0; i <= av_len (av); ++i)
		1103	{
		1104	SV sv = av_fetch (av, i, 1);
		1105	SV histsv = newSV (9 sizeof (float) + 1);
		1106
		1107	SvPOK_on (histsv);
		1108	SvCUR_set (histsv, 9 * sizeof (float));
		1109	float hist = (float )SvPVX (histsv);
		1110
		1111	struct feature f_h, f_s, f_v;
		1112	feature_init (&f_h);
		1113	feature_init (&f_s);
		1114	feature_init (&f_v);
		1115
		1116	{
		1117	STRLEN len;
		1118	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		1119	while (len >= 3)
		1120	{
		1121	unsigned int r, g, b, h, s, v;
		1122	r = buf++; g = buf++; b = *buf++;
		1123	rgb_to_hsv (r, g, b, &h, &s, &v);
		1124
		1125	feature_update_pass_1 (&f_h, h);
		1126	feature_update_pass_1 (&f_s, s);
		1127	feature_update_pass_1 (&f_v, v);
		1128
		1129	len -= 3;
		1130	}
		1131
		1132	feature_finish_pass_1 (&f_h);
		1133	feature_finish_pass_1 (&f_s);
		1134	feature_finish_pass_1 (&f_v);
		1135	}
		1136
		1137	{
		1138	STRLEN len;
		1139	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		1140	while (len >= 3)
		1141	{
		1142	unsigned int r, g, b, h, s, v;
		1143	r = buf++; g = buf++; b = *buf++;
		1144	rgb_to_hsv (r, g, b, &h, &s, &v);
		1145
		1146	feature_update_pass_2 (&f_h, h);
		1147	feature_update_pass_2 (&f_s, s);
		1148	feature_update_pass_2 (&f_v, v);
		1149
		1150	len -= 3;
		1151	}
		1152
		1153	feature_finish_pass_2 (&f_h);
		1154	feature_finish_pass_2 (&f_s);
		1155	feature_finish_pass_2 (&f_v);
		1156	}
		1157
		1158	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		1159	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		1160	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
		1161
		1162	av_push (result, histsv);
		1163	}
		1164
		1165	RETVAL = newRV_noinc ((SV *)result);
		1166	}
		1167	OUTPUT:
		1168	RETVAL
		1169

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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 1.61 by root, Sun Jul 25 11:24:48 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 1.61 by root, Sun Jul 25 11:24:48 2021 UTC