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

Comparing CV/CV.xs (file contents):
Revision 1.26 by root, Sun Aug 21 02:18:30 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
9	#include <glib.h>	14	#include <glib.h>
10	#include <gtk/gtk.h>	15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
11	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
12		18
13	#include <gperl.h>	19	#include <gperl.h>
14	#include <gtk2perl.h>	20	#include <gtk2perl.h>
15		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
16	#define IW 80 /* MUST match Schnauer.pm! */	36	#define IW 80 /* MUST match Schnauzer.pm! */
17	#define IH 60 /* MUST match Schnauer.pm! */	37	#define IH 60 /* MUST match Schnauzer.pm! */
18
19	#define RAND (seed = (seed + 7141) * 54773 % 134456)
20		38
21	#define LINELENGTH 240	39	#define LINELENGTH 240
22		40
23	#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 */
24		46
25	struct jpg_err_mgr	47	struct jpg_err_mgr
26	{	48	{
27	struct jpeg_error_mgr err;	49	struct jpeg_error_mgr err;
28	jmp_buf setjmp_buffer;	50	jmp_buf setjmp_buffer;
29	};	51	};
30		52
31	static void	53	static void
32	cv_error_exit (j_common_ptr cinfo)	54	cv_error_exit (j_common_ptr cinfo)
33	{	55	{
		56	cinfo->err->output_message (cinfo);
34	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	57	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
35	}	58	}
36		59
37	static void	60	static void
38	cv_error_output (j_common_ptr cinfo)	61	cv_error_output (j_common_ptr cinfo)
39	{	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);
40	return;	68	return;
41	}	69	}
42		70
43	static void	71	static void
44	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,
…		…
65		93
66	*h &= 255;	94	*h &= 255;
67	}	95	}
68	}	96	}
69		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
70	static guint32 a85_val;	153	static guint32 a85_val;
71	static guint a85_cnt;	154	static guint a85_cnt;
72	static guchar a85_buf[LINELENGTH], *a85_ptr;	155	static guchar a85_buf[LINELENGTH], *a85_ptr;
73		156
74	static void	157	static void
…		…
86	if (!--a85_cnt)	169	if (!--a85_cnt)
87	{	170	{
88	a85_cnt = 4;	171	a85_cnt = 4;
89	if (a85_val)	172	if (a85_val)
90	{	173	{
91	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
92	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	175	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
93	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	176	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
94	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	177	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
95	a85_ptr[0] = (a85_val ) + 33;	178	a85_ptr[0] = (a85_val ) + 33;
96		179
97	a85_ptr += 5;	180	a85_ptr += 5;
98	}	181	}
…		…
121		204
122	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	205	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
123	}	206	}
124		207
125	/////////////////////////////////////////////////////////////////////////////	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	/////////////////////////////////////////////////////////////////////////////
126		303
127	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	304	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
128		305
129	PROTOTYPES: ENABLE	306	PROTOTYPES: ENABLE
130		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
131	# missing in Gtk2 perl module	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);
132		363
133	gboolean	364	gboolean
134	gdk_net_wm_supports (GdkAtom property)	365	gdk_net_wm_supports (GdkAtom property)
135	CODE:	366	CODE:
136	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	367	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
142	RETVAL	373	RETVAL
143		374
144	GdkPixbuf_noinc *	375	GdkPixbuf_noinc *
145	dealpha_expose (GdkPixbuf *pb)	376	dealpha_expose (GdkPixbuf *pb)
146	CODE:	377	CODE:
147	{	378	perlinterp_release ();
148	int w = gdk_pixbuf_get_width (pb);
149	int h = gdk_pixbuf_get_height (pb);
150	fprintf (stderr, "new %d %d\n", w, h);
151	int bpp = gdk_pixbuf_get_n_channels (pb);
152	int x, y, i;
153	guchar src = gdk_pixbuf_get_pixels (pb), dst;
154	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
155
156	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
157
158	dst = gdk_pixbuf_get_pixels (RETVAL);
159	dstr = gdk_pixbuf_get_rowstride (RETVAL);
160
161	for (x = 0; x < w; x++)
162	for (y = 0; y < h; y++)
163	for (i = 0; i < 3; i++)
164	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
165	}
166	OUTPUT:
167	RETVAL
168
169	GdkPixbuf_noinc *
170	transpose (GdkPixbuf *pb)
171	CODE:
172	{	379	{
173	int w = gdk_pixbuf_get_width (pb);	380	int w = gdk_pixbuf_get_width (pb);
174	int h = gdk_pixbuf_get_height (pb);	381	int h = gdk_pixbuf_get_height (pb);
175	int bpp = gdk_pixbuf_get_n_channels (pb);	382	int bpp = gdk_pixbuf_get_n_channels (pb);
176	int x, y, i;	383	int x, y, i;
177	guchar src = gdk_pixbuf_get_pixels (pb), dst;	384	guchar src = gdk_pixbuf_get_pixels (pb), dst;
178	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	385	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
179		386
180	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	387	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
181		388
182	dst = gdk_pixbuf_get_pixels (RETVAL);	389	dst = gdk_pixbuf_get_pixels (RETVAL);
183	dstr = gdk_pixbuf_get_rowstride (RETVAL);	390	dstr = gdk_pixbuf_get_rowstride (RETVAL);
184		391
185	for (y = 0; y < h; y++)
186	for (x = 0; x < w; x++)	392	for (x = 0; x < w; x++)
		393	for (y = 0; y < h; y++)
187	for (i = 0; i < bpp; i++)	394	for (i = 0; i < 3; i++)
188	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];
189	}	396	}
		397	perlinterp_acquire ();
190	OUTPUT:	398	OUTPUT:
191	RETVAL	399	RETVAL
192		400
193	GdkPixbuf_noinc *	401	GdkPixbuf_noinc *
194	flop (GdkPixbuf *pb)	402	rotate (GdkPixbuf *pb, int angle)
195	CODE:	403	CODE:
196	{	404	perlinterp_release ();
197	int w = gdk_pixbuf_get_width (pb);	405	if (angle < 0)
198	int h = gdk_pixbuf_get_height (pb);	406	angle += 360;
199	int bpp = gdk_pixbuf_get_n_channels (pb);	407	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
200	int x, y, i;	408	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
201	guchar src = gdk_pixbuf_get_pixels (pb), dst;	409	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
202	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	410	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
203		411	: angle);
204	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	412	perlinterp_acquire ();
205
206	dst = gdk_pixbuf_get_pixels (RETVAL);
207	dstr = gdk_pixbuf_get_rowstride (RETVAL);
208
209	for (y = 0; y < h; y++)
210	for (x = 0; x < w; x++)
211	for (i = 0; i < bpp; i++)
212	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
213	}
214	OUTPUT:	413	OUTPUT:
215	RETVAL	414	RETVAL
216		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
217	GdkPixbuf_noinc *	491	GdkPixbuf_noinc *
218	load_jpeg (SV *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)
219	CODE:	694	CODE:
220	{	695	{
221	struct jpeg_decompress_struct cinfo;	696	struct jpeg_decompress_struct cinfo;
222	struct jpg_err_mgr jerr;	697	struct jpg_err_mgr jerr;
223	guchar *data;
224	int rs;	698	int rs;
225	FILE *fp;
226	volatile GdkPixbuf *pb = 0;	699	volatile GdkPixbuf *pb = 0;
227	gchar *filename;	700	STRLEN data_len;
		701	guchar *data = SvPVbyte (image_data, data_len);
228		702
229	RETVAL = 0;	703	RETVAL = 0;
230		704
231	filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);	705	perlinterp_release ();
232	fp = fopen (filename, "rb");
233	g_free (filename);
234
235	if (!fp)
236	XSRETURN_UNDEF;
237		706
238	cinfo.err = jpeg_std_error (&jerr.err);	707	cinfo.err = jpeg_std_error (&jerr.err);
239		708
240	jerr.err.error_exit = cv_error_exit;	709	jerr.err.error_exit = cv_error_exit;
241	jerr.err.output_message = cv_error_output;	710	jerr.err.output_message = cv_error_output;
242		711
243	if ((rs = setjmp (jerr.setjmp_buffer)))	712	if ((rs = setjmp (jerr.setjmp_buffer)))
244	{	713	{
245	fclose (fp);
246	jpeg_destroy_decompress (&cinfo);	714	jpeg_destroy_decompress (&cinfo);
247		715
248	if (pb)	716	if (pb)
249	g_object_unref ((gpointer)pb);	717	g_object_unref ((gpointer)pb);
250		718
		719	perlinterp_acquire ();
251	XSRETURN_UNDEF;	720	XSRETURN_UNDEF;
252	}	721	}
253		722
		723	if (!data_len)
		724	longjmp (jerr.setjmp_buffer, 4);
		725
254	jpeg_create_decompress (&cinfo);	726	jpeg_create_decompress (&cinfo);
		727	cv_jpeg_mem_src (&cinfo, data, data_len);
255		728
256	jpeg_stdio_src (&cinfo, fp);
257	jpeg_read_header (&cinfo, TRUE);	729	jpeg_read_header (&cinfo, TRUE);
258		730
259	cinfo.dct_method = JDCT_DEFAULT;	731	cinfo.dct_method = JDCT_DEFAULT;
260	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 */
261	cinfo.do_block_smoothing = FALSE;	733	cinfo.do_block_smoothing = FALSE;
…		…
271	{	743	{
272	cinfo.dct_method = JDCT_FASTEST;	744	cinfo.dct_method = JDCT_FASTEST;
273	cinfo.do_fancy_upsampling = FALSE;	745	cinfo.do_fancy_upsampling = FALSE;
274		746
275	while (cinfo.scale_denom < 8	747	while (cinfo.scale_denom < 8
276	&& cinfo.output_width >= IW*4	748	&& cinfo.output_width >= iw*4
277	&& cinfo.output_height >= IH*4)	749	&& cinfo.output_height >= ih*4)
278	{	750	{
279	cinfo.scale_denom <<= 1;	751	cinfo.scale_denom <<= 1;
280	jpeg_calc_output_dimensions (&cinfo);	752	jpeg_calc_output_dimensions (&cinfo);
281	}	753	}
282	}	754	}
283		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
284	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);
285	if (!RETVAL)	766	if (!RETVAL)
286	longjmp (jerr.setjmp_buffer, 2);	767	longjmp (jerr.setjmp_buffer, 2);
287		768
288	data = gdk_pixbuf_get_pixels (RETVAL);	769	data = gdk_pixbuf_get_pixels (RETVAL);
289	rs = gdk_pixbuf_get_rowstride (RETVAL);	770	rs = gdk_pixbuf_get_rowstride (RETVAL);
290
291	if (cinfo.output_components != 3)
292	longjmp (jerr.setjmp_buffer, 3);
293		771
294	jpeg_start_decompress (&cinfo);	772	jpeg_start_decompress (&cinfo);
295		773
296	while (cinfo.output_scanline < cinfo.output_height)	774	while (cinfo.output_scanline < cinfo.output_height)
297	{	775	{
…		…
304	rp [3] = (guchar *)rp [2] + rs;	782	rp [3] = (guchar *)rp [2] + rs;
305		783
306	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	784	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
307	}	785	}
308		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
309	jpeg_finish_decompress (&cinfo);	816	jpeg_finish_decompress (&cinfo);
310	fclose (fp);
311	jpeg_destroy_decompress (&cinfo);	817	jpeg_destroy_decompress (&cinfo);
		818	perlinterp_acquire ();
312	}	819	}
313	OUTPUT:	820	OUTPUT:
314	RETVAL	821	RETVAL
315		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
316	#############################################################################	871	#############################################################################
317		872
318	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	873	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
		874
		875	# currently only works for filenames (octet strings)
319		876
320	SV *	877	SV *
321	foldcase (SV *pathsv)	878	foldcase (SV *pathsv)
322	PROTOTYPE: $	879	PROTOTYPE: $
323	CODE:	880	CODE:
324	{	881	{
325	STRLEN plen;	882	STRLEN plen;
326	U8 path = (U8 )SvPVutf8 (pathsv, plen);	883	U8 path = (U8 )SvPV (pathsv, plen);
327	U8 *pend = path + plen;	884	U8 *pend = path + plen;
328	U8 dst [plen * 6 * 3], *dstp = dst;	885	U8 dst [plen * 8 * 3], *dstp = dst;
329		886
330	while (path < pend)	887	while (path < pend)
331	{	888	{
332	U8 ch = *path;	889	U8 ch = *path;
333		890
334	if (ch >= 'a' && ch <= 'z')	891	if (ch >= 'a' && ch <= 'z')
335	dstp++ = path++;	892	dstp++ = path++;
		893	else if (ch >= 'A' && ch <= 'Z')
		894	dstp++ = path++ + ('a' - 'A');
336	else if (ch >= '0' && ch <= '9')	895	else if (ch >= '0' && ch <= '9')
337	{	896	{
		897	/* version sort, up to 8 digits */
338	STRLEN el, nl = 0;	898	STRLEN el, nl = 0;
339	while (path >= '0' && path <= '9' && path < pend)	899	while (path >= '0' && path <= '9' && path < pend)
340	path++, nl++;	900	path++, nl++;
341		901
342	for (el = nl; el < 6; el++)	902	for (el = nl; el < 8; el++)
343	*dstp++ = '0';	903	*dstp++ = '0';
344		904
345	memcpy (dstp, path - nl, nl);	905	memcpy (dstp, path - nl, nl);
346	dstp += nl;	906	dstp += nl;
347	}	907	}
		908	else
		909	dstp++ = path++;
		910	#if 0
348	else	911	else
349	{	912	{
350	STRLEN cl;	913	STRLEN cl;
351	to_utf8_fold (path, dstp, &cl);	914	to_utf8_fold (path, dstp, &cl);
352	dstp += cl;	915	dstp += cl;
353	path += is_utf8_char (path);	916	path += is_utf8_char (path);
354	}	917	}
		918	#endif
355	}	919	}
356		920
357	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	921	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
358	}	922	}
359	OUTPUT:	923	OUTPUT:
…		…
384	}	948	}
385	}	949	}
386	OUTPUT:	950	OUTPUT:
387	RETVAL	951	RETVAL
388		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
389	SV *	1001	SV *
390	pb_to_p7 (GdkPixbuf *pb)	1002	pb_to_hv84 (GdkPixbuf *pb)
391	CODE:	1003	CODE:
392	{	1004	{
393	int w = gdk_pixbuf_get_width (pb);	1005	int w = gdk_pixbuf_get_width (pb);
394	int h = gdk_pixbuf_get_height (pb);	1006	int h = gdk_pixbuf_get_height (pb);
395	int x, y;	1007	int x, y;
396	guchar *dst;	1008	guchar *dst;
397	int bpp = gdk_pixbuf_get_n_channels (pb);	1009	int bpp = gdk_pixbuf_get_n_channels (pb);
398	guchar *src = gdk_pixbuf_get_pixels (pb);	1010	guchar *src = gdk_pixbuf_get_pixels (pb);
399	int sstr = gdk_pixbuf_get_rowstride (pb);	1011	int sstr = gdk_pixbuf_get_rowstride (pb);
400	int Er[IW], Eg[IW], Eb[IW];
401	int seed = 77;
402
403	RETVAL = newSV (w * h);
404	SvPOK_only (RETVAL);
405	SvCUR_set (RETVAL, w * h);
406
407	dst = (guchar *)SvPVX (RETVAL);
408
409	memset (Er, 0, sizeof (int) * IW);
410	memset (Eg, 0, sizeof (int) * IW);
411	memset (Eb, 0, sizeof (int) * IW);
412
413	/* some primitive error distribution + random dithering */
414
415	for (y = 0; y < h; y++)
416	{
417	int er = 0, eg = 0, eb = 0;
418
419	for (x = 0; x < w; x++)
420	{
421	int r, g, b;
422	guchar p = src + x bpp + y * sstr;
423
424	r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
425	g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
426	b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
427
428	r = r > 7 ? 7 : r < 0 ? 0 : r;
429	g = g > 7 ? 7 : g < 0 ? 0 : g;
430	b = b > 3 ? 3 : b < 0 ? 0 : b;
431
432	er += p[0] - (r * 255 + 4) / 7;
433	eg += p[1] - (g * 255 + 4) / 7;
434	eb += p[2] - (b * 255 + 2) / 3;
435
436	Er[x] = er >> 1; er -= (er + 1) >> 1;
437	Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
438	Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
439
440	*dst++ = r << 5 \| g << 2 \| b;
441	}
442	}
443	}
444	OUTPUT:
445	RETVAL
446
447	#############################################################################
448
449	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
450
451	void
452	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
453	CODE:
454	{
455	int w = gdk_pixbuf_get_width (pb);
456	int h = gdk_pixbuf_get_height (pb);
457	int x, y, i;
458	guchar *dst;
459	int bpp = gdk_pixbuf_get_n_channels (pb);
460	guchar *src = gdk_pixbuf_get_pixels (pb);
461	int sstr = gdk_pixbuf_get_rowstride (pb);
462
463	a85_init ();
464
465	for (y = 0; y < h; y++)
466	for (x = 0; x < w; x++)
467	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
468	a85_push (fp, src [x * bpp + y * sstr + i]);
469
470	a85_finish (fp);
471	}
472
473	void
474	dump_binary (PerlIO fp, GdkPixbuf pb)
475	CODE:
476	{
477	int w = gdk_pixbuf_get_width (pb);
478	int h = gdk_pixbuf_get_height (pb);
479	int x, y, i;
480	guchar *dst;
481	int bpp = gdk_pixbuf_get_n_channels (pb);
482	guchar *src = gdk_pixbuf_get_pixels (pb);
483	int sstr = gdk_pixbuf_get_rowstride (pb);
484
485	for (y = 0; y < h; y++)
486	for (x = 0; x < w; x++)
487	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
488	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
489	}
490
491	#############################################################################
492
493	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
494
495	SV *
496	pb_to_hv84 (GdkPixbuf *pb)
497	CODE:
498	{
499	int w = gdk_pixbuf_get_width (pb);
500	int h = gdk_pixbuf_get_height (pb);
501	int x, y;
502	guchar *dst;
503	int bpp = gdk_pixbuf_get_n_channels (pb);
504	guchar *src = gdk_pixbuf_get_pixels (pb);
505	int sstr = gdk_pixbuf_get_rowstride (pb);
506		1012
507	RETVAL = newSV (6 * 8 * 12 / 8);	1013	RETVAL = newSV (6 * 8 * 12 / 8);
508	SvPOK_only (RETVAL);	1014	SvPOK_only (RETVAL);
509	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);	1015	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
510		1016
…		…
579	#############################################################################	1085	#############################################################################
580		1086
581	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster	1087	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
582		1088
583	SV *	1089	SV *
584	make_histograms (SV *ar)	1090	extract_features (SV *ar)
585	CODE:	1091	CODE:
586	{	1092	{
587	int i;	1093	int i;
588	AV av, result;	1094	AV av, result;
589		1095
590	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	1096	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
591	croak ("Not an array ref as first argument to make_histogram");	1097	croak ("Not an array ref as first argument to extract_features");
592		1098
593	av = (AV *) SvRV (ar);	1099	av = (AV *) SvRV (ar);
594	result = newAV ();	1100	result = newAV ();
595		1101
596	for (i = 0; i <= av_len (av); ++i)	1102	for (i = 0; i <= av_len (av); ++i)
597	{	1103	{
598	const int HISTSIZE = 64;
599
600	int j;
601	SV sv = av_fetch (av, i, 1);	1104	SV sv = av_fetch (av, i, 1);
602	STRLEN len;
603	char *buf = SvPVbyte (sv, len);
604
605	int tmphist[HISTSIZE];
606	float *hist;
607
608	SV histsv = newSV (HISTSIZE sizeof (float) + 1);	1105	SV histsv = newSV (9 sizeof (float) + 1);
		1106
609	SvPOK_on (histsv);	1107	SvPOK_on (histsv);
610	SvCUR_set (histsv, HISTSIZE * sizeof (float));	1108	SvCUR_set (histsv, 9 * sizeof (float));
611	hist = (float *)SvPVX (histsv);	1109	float hist = (float )SvPVX (histsv);
612		1110
613	Zero (tmphist, sizeof (tmphist), char);	1111	struct feature f_h, f_s, f_v;
		1112	feature_init (&f_h);
		1113	feature_init (&f_s);
		1114	feature_init (&f_v);
614		1115
615	for (j = len; j--; )
616	{
617	unsigned int idx
618	= ((*buf & 0xc0) >> 2)
619	\| ((*buf & 0x18) >> 1)
620	\| (*buf & 0x03);
621
622	++tmphist[idx];
623	++buf;
624	}
625		1116	{
626	for (j = 0; j < HISTSIZE; ++j)	1117	STRLEN len;
627	hist[j] = (float)tmphist[j] / (len + 1e-30);	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;
628		1161
629	av_push (result, histsv);	1162	av_push (result, histsv);
630	}	1163	}
631		1164
632	RETVAL = newRV_noinc ((SV *)result);	1165	RETVAL = newRV_noinc ((SV *)result);
633	}	1166	}
634	OUTPUT:	1167	OUTPUT:
635	RETVAL	1168	RETVAL
636		1169
637

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Comparing CV/CV.xs (file contents): Revision 1.26 by root, Sun Aug 21 02:18:30 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 1.26 by root, Sun Aug 21 02:18:30 2005 UTC vs.
Revision 1.61 by root, Sun Jul 25 11:24:48 2021 UTC