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

Comparing CV/CV.xs (file contents):
Revision 1.6 by root, Wed Nov 12 00:59:01 2003 UTC vs.
Revision 1.68 by root, Fri May 12 02:11:10 2023 UTC

…		…
1	#include "EXTERN.h"	1	#include "EXTERN.h"
2	#include "perl.h"	2	#include "perl.h"
3	#include "XSUB.h"	3	#include "XSUB.h"
4		4
		5	#include <string.h>
		6	#include <setjmp.h>
		7	#include <math.h>
		8
		9	#include <magic.h>
		10
		11	#include <jpeglib.h>
		12	#include <jerror.h>
		13
		14	#include <glib.h>
		15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
5	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
6		18
7	#include <gperl.h>	19	#include <gperl.h>
8	#include <gtk2perl.h>	20	#include <gtk2perl.h>
9		21
10	#define IW 80	22	#include <assert.h>
11		23
12	#define RAND (seed = (seed + 7141) * 54773 % 134456)	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
		36	#define IW 80 /* MUST match Schnauzer.pm! */
		37	#define IH 60 /* MUST match Schnauzer.pm! */
		38
		39	#define LINELENGTH 240
13		40
14	#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 */
		46
		47	struct jpg_err_mgr
		48	{
		49	struct jpeg_error_mgr err;
		50	jmp_buf setjmp_buffer;
		51	};
		52
		53	static void
		54	cv_error_exit (j_common_ptr cinfo)
		55	{
		56	cinfo->err->output_message (cinfo);
		57	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
		58	}
		59
		60	static void
		61	cv_error_output (j_common_ptr cinfo)
		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);
		68	return;
		69	}
		70
		71	static void
		72	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
		73	unsigned int h, unsigned int s, unsigned int *v)
		74	{
		75	unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
		76	unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
		77	unsigned int delta = mx - mn;
		78
		79	*v = mx;
		80
		81	s = mx ? delta 255 / mx : 0;
		82
		83	if (delta == 0)
		84	*h = 0;
		85	else
		86	{
		87	if (r == mx)
		88	h = ((int)g - (int)b) 255 / (int)(delta * 3);
		89	else if (g == mx)
		90	h = ((int)b - (int)r) 255 / (int)(delta * 3) + 52;
		91	else if (b == mx)
		92	h = ((int)r - (int)g) 255 / (int)(delta * 3) + 103;
		93
		94	*h &= 255;
		95	}
		96	}
		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	}
15		152
16	static guint32 a85_val;	153	static guint32 a85_val;
17	static guint a85_cnt;	154	static guint a85_cnt;
18	static guchar a85_buf[80], *a85_ptr;	155	static guchar a85_buf[LINELENGTH], *a85_ptr;
19		156
20	static void	157	static void
21	a85_init (void)	158	a85_init (void)
22	{	159	{
23	a85_cnt = 4;	160	a85_cnt = 4;
32	if (!--a85_cnt)	169	if (!--a85_cnt)
33	{	170	{
34	a85_cnt = 4;	171	a85_cnt = 4;
35	if (a85_val)	172	if (a85_val)
36	{	173	{
37	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
38	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	175	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
39	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	176	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
40	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	177	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
41	a85_ptr[0] = (a85_val ) + 33;	178	a85_ptr[0] = (a85_val ) + 33;
42		179
43	a85_ptr += 5;	180	a85_ptr += 5;
44	}	181	}
…		…
53	}	190	}
54	}	191	}
55		192
56	}	193	}
57		194
		195	static void
58	a85_finish (PerlIO *fp)	196	a85_finish (PerlIO *fp)
59	{	197	{
60	while (a85_cnt != 4)	198	while (a85_cnt != 4)
61	a85_push (fp, 0);	199	a85_push (fp, 0);
62		200
…		…
66		204
67	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	205	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
68	}	206	}
69		207
70	/////////////////////////////////////////////////////////////////////////////	208	/////////////////////////////////////////////////////////////////////////////
		209	// memory source for libjpeg
71		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	/////////////////////////////////////////////////////////////////////////////
		303
72	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow	304	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
73		305
74	PROTOTYPES: ENABLE	306	PROTOTYPES: ENABLE
75		307
		308	void
		309	_exit (int code)
		310
		311	# calculate the common prefix length of two strings
		312	# missing function in perl. really :)
		313	int
		314	common_prefix_length (a, b)
		315	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
		316	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
		317	CODE:
		318	RETVAL = 0;
		319
		320	while (a == b && *a)
		321	{
		322	RETVAL += (*a & 0xc0) != 0x80;
		323	a++, b++;
		324	}
		325
		326	OUTPUT:
		327	RETVAL
		328
		329	const char *
		330	magic (SV *path_or_data)
		331	ALIAS:
		332	magic = 0
		333	magic_mime = 1
		334	magic_buffer = 2
		335	magic_buffer_mime = 3
		336	CODE:
		337	{
		338	STRLEN len;
		339	char *data = SvPVbyte (path_or_data, len);
		340
		341	if (!magic_cookie[0])
		342	{
		343	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		344	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		345	magic_load (magic_cookie[0], 0);
		346	magic_load (magic_cookie[1], 0);
		347	}
		348
		349	perlinterp_release ();
		350
		351	RETVAL = ix & 2
		352	? magic_buffer (magic_cookie[ix & 1], data, len)
		353	: magic_file (magic_cookie[ix & 1], data);
		354
		355	perlinterp_acquire ();
		356	}
		357	OUTPUT:
		358	RETVAL
		359
		360	# missing/broken in Gtk2 perl module
		361
		362	void
		363	gdk_window_clear_hints (GdkWindow *window)
		364	CODE:
		365	gdk_window_set_geometry_hints (window, 0, 0);
		366
		367	gboolean
		368	gdk_net_wm_supports (GdkAtom property)
		369	CODE:
		370	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
		371	RETVAL = gdk_net_wm_supports (property);
		372	#else
		373	RETVAL = 0;
		374	#endif
		375	OUTPUT:
		376	RETVAL
		377
76	GdkPixbuf_noinc *	378	GdkPixbuf_noinc *
77	transpose (GdkPixbuf *pb)	379	dealpha_expose (GdkPixbuf *pb)
78	CODE:	380	CODE:
		381	perlinterp_release ();
79	{	382	{
80	int w = gdk_pixbuf_get_width (pb);	383	int w = gdk_pixbuf_get_width (pb);
81	int h = gdk_pixbuf_get_height (pb);	384	int h = gdk_pixbuf_get_height (pb);
82	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	385	int bpp = gdk_pixbuf_get_n_channels (pb);
83	int x, y, i;	386	int x, y, i;
84	guchar src = gdk_pixbuf_get_pixels (pb), dst;	387	guchar src = gdk_pixbuf_get_pixels (pb), dst;
85	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	388	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
86		389
87	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w);	390	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
88		391
89	dst = gdk_pixbuf_get_pixels (RETVAL);	392	dst = gdk_pixbuf_get_pixels (RETVAL);
90	dstr = gdk_pixbuf_get_rowstride (RETVAL);	393	dstr = gdk_pixbuf_get_rowstride (RETVAL);
91		394
92	for (y = 0; y < h; y++)
93	for (x = 0; x < w; x++)	395	for (x = 0; x < w; x++)
		396	for (y = 0; y < h; y++)
94	for (i = 0; i < bpp; i++)	397	for (i = 0; i < 3; i++)
95	dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i];	398	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
96	}	399	}
		400	perlinterp_acquire ();
97	OUTPUT:	401	OUTPUT:
98	RETVAL	402	RETVAL
99		403
100	GdkPixbuf_noinc *	404	GdkPixbuf_noinc *
101	flop (GdkPixbuf *pb)	405	rotate (GdkPixbuf *pb, int angle)
102	CODE:	406	CODE:
103	{	407	perlinterp_release ();
104	int w = gdk_pixbuf_get_width (pb);	408	if (angle < 0)
105	int h = gdk_pixbuf_get_height (pb);	409	angle += 360;
106	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	410	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
107	int x, y, i;	411	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
108	guchar src = gdk_pixbuf_get_pixels (pb), dst;	412	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
109	int sstr = gdk_pixbuf_get_rowstride (pb), dstr;	413	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
110		414	: angle);
111	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h);	415	perlinterp_acquire ();
112
113	dst = gdk_pixbuf_get_pixels (RETVAL);
114	dstr = gdk_pixbuf_get_rowstride (RETVAL);
115
116	for (y = 0; y < h; y++)
117	for (x = 0; x < w; x++)
118	for (i = 0; i < bpp; i++)
119	dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
120	}
121	OUTPUT:	416	OUTPUT:
122	RETVAL	417	RETVAL
123		418
		419	const char *
		420	filetype (SV *image_data)
		421	CODE:
		422	{
		423	STRLEN data_len;
		424	U8 *data = SvPVbyte (image_data, data_len);
		425	static const unsigned char jxl_header[] = {
		426	0, 0, 0, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0xa, 0x87, 0x0a
		427	};
		428
		429	if (data_len >= 20
		430	&& data[0] == 0xff
		431	&& data[1] == 0xd8
		432	&& data[2] == 0xff)
		433	RETVAL = "image/jpeg";
		434	else if (data_len >= 12
		435	&& data[ 0] == (U8)'R'
		436	&& data[ 1] == (U8)'I'
		437	&& data[ 2] == (U8)'F'
		438	&& data[ 3] == (U8)'F'
		439	&& data[ 8] == (U8)'W'
		440	&& data[ 9] == (U8)'E'
		441	&& data[10] == (U8)'B'
		442	&& data[11] == (U8)'P')
		443	RETVAL = "image/webp";
		444	else if (data_len >= 16
		445	&& data[ 0] == 0x89
		446	&& data[ 1] == (U8)'P'
		447	&& data[ 2] == (U8)'N'
		448	&& data[ 3] == (U8)'G'
		449	&& data[ 4] == 0x0d
		450	&& data[ 5] == 0x0a
		451	&& data[ 6] == 0x1a
		452	&& data[ 7] == 0x0a)
		453	RETVAL = "image/png";
		454	else if (data_len >= sizeof (jxl_header) && memcmp (data, jxl_header, sizeof (jxl_header)) == 0)
		455	RETVAL = "image/jxl"; // todo: might want to use JxlSignatureCheck
		456	else if (data_len >= 2
		457	&& data[0] == 0xff
		458	&& data[1] == 0x0a)
		459	RETVAL = "image/jxl";
		460	else if (data_len >= 13
		461	&& data[0] == 'G'
		462	&& data[1] == 'I'
		463	&& data[2] == 'F'
		464	&& data[3] == '8'
		465	//&& (data[4] == '7' \|\| data[4] == '9')
		466	&& data[5] == 'a')
		467	{
		468	RETVAL = "image/gif";
		469
		470	// now see if its animated - we require the netscape application header for this
		471	int ofs = 13;
		472
		473	if (data[10] & 0x80)
		474	ofs += (1 << ((data[10] & 7) + 1)) * 3;
		475
		476	if (data_len >= ofs + 2 + 1 + 11)
		477	{
		478
		479	// skip a graphic control extension block. we assume
		480	// there is at most one such block - while the NAB
		481	// has to come firstz, some files do not obey this
		482	if (data[ofs] == 0x21 && data[ofs + 1] == 0xf9)
		483	ofs += 3 + data[ofs + 2] + 1;
		484
		485	if (data_len >= ofs + 2 + 1 + 11)
		486	if (!memcmp (data + ofs, "\x21\xff\x0bNETSCAPE2.0", sizeof ("\x21\xff\x0bNETSCAPE2.0") - 1))
		487	RETVAL = "video/gif";
		488	}
		489	}
		490	else if (data_len >= 0x8000 + 6
		491	&& data[0x8000+0] == 0
		492	&& data[0x8000+1] == (U8)'B'
		493	&& data[0x8000+2] == (U8)'E'
		494	&& data[0x8000+3] == (U8)'A'
		495	&& data[0x8000+4] == (U8)'0'
		496	&& data[0x8000+5] == (U8)'1')
		497	RETVAL = "video/iso-bluray";
		498	else if (data_len >= 0x8000 + 6
		499	&& data[0x8000+0] == 0
		500	&& data[0x8000+1] == (U8)'C'
		501	&& data[0x8000+2] == (U8)'D'
		502	&& data[0x8000+3] == (U8)'0'
		503	&& data[0x8000+4] == (U8)'0'
		504	&& data[0x8000+5] == (U8)'1')
		505	RETVAL = "video/iso9660";
		506
		507	else
		508	XSRETURN_UNDEF;
		509	}
		510	OUTPUT:
		511	RETVAL
		512
		513	GdkPixbuf_noinc *
		514	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		515	CODE:
		516	{
		517	#if WEBP
		518	STRLEN data_size;
		519	int alpha;
		520	WebPData data;
		521	WebPDemuxer *demux;
		522	WebPIterator iter;
		523	WebPDecoderConfig config;
		524	int inw, inh;
		525
		526	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		527	data.size = data_size;
		528
		529	perlinterp_release ();
		530
		531	RETVAL = 0;
		532
		533	if (!(demux = WebPDemux (&data)))
		534	goto err_demux;
		535
		536	if (!WebPDemuxGetFrame (demux, 1, &iter))
		537	goto err_iter;
		538
		539	if (!WebPInitDecoderConfig (&config))
		540	goto err_iter;
		541
		542	config.options.use_threads = 1;
		543
		544	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		545	goto err_iter;
		546
		547	inw = config.input.width;
		548	inh = config.input.height;
		549
		550	if (thumbnail)
		551	{
		552	if (inw * ih > inh * iw)
		553	ih = (iw * inh + inw - 1) / inw;
		554	else
		555	iw = (ih * inw + inh - 1) / inh;
		556
		557	config.options.bypass_filtering = 1;
		558	config.options.no_fancy_upsampling = 1;
		559
		560	config.options.use_scaling = 1;
		561	config.options.scaled_width = iw;
		562	config.options.scaled_height = ih;
		563	}
		564	else
		565	{
		566	iw = inw;
		567	ih = inh;
		568	}
		569
		570	alpha = !!config.input.has_alpha;
		571
		572	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		573	if (!RETVAL)
		574	goto err_iter;
		575
		576	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		577	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		578	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		579	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		580	config.output.is_external_memory = 1;
		581
		582	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		583	{
		584	g_object_unref (RETVAL);
		585	RETVAL = 0;
		586	goto err_iter;
		587	}
		588
		589	err_iter:
		590	WebPDemuxReleaseIterator (&iter);
		591	err_demux:
		592	WebPDemuxDelete (demux);
		593
		594	perlinterp_acquire ();
		595	#else
		596	croak ("load_webp: webp not enabled at compile time");
		597	#endif
		598	}
		599	OUTPUT:
		600	RETVAL
		601
		602	GdkPixbuf_noinc *
		603	decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		604	CODE:
		605	{
		606	#if JXL
		607	JxlDecoder *dec;
		608	JxlBasicInfo info;
		609	const uint8_t next_in = (uint8_t )SvPVbyte_nolen (image_data);
		610	size_t avail_in = SvCUR (image_data);
		611	const char *error = 0;
		612	JxlDecoderStatus status;
		613	static void *runner_cache;
		614	void *runner = 0;
		615
		616	RETVAL = 0;
		617
		618	if (runner_cache)
		619	runner = runner_cache;
		620	else
		621	runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
		622
		623	runner_cache = 0;
		624
		625	perlinterp_release ();
		626
		627	dec = JxlDecoderCreate (0);
		628
		629	error = "JxlDecoderCreate failed";
		630	if (!dec)
		631	goto done;
		632
		633	status = JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner);
		634	error = "JxlDecoderSetParallelRunner failed";
		635	if (status != JXL_DEC_SUCCESS)
		636	goto done;
		637
		638	error = "JxlDecoderSubscribeEvents failed";
		639	status = JxlDecoderSubscribeEvents (dec, JXL_DEC_BASIC_INFO \| JXL_DEC_FULL_IMAGE);
		640	if (status != JXL_DEC_SUCCESS)
		641	goto done;
		642
		643	status = JxlDecoderSetInput (dec, next_in, avail_in);
		644	error = "JxlDecoderSetInput failed";
		645	if (status != JXL_DEC_SUCCESS)
		646	goto done;
		647
		648	for (;;)
		649	{
		650	status = JxlDecoderProcessInput (dec);
		651
		652	switch (status)
		653	{
		654	case JXL_DEC_FULL_IMAGE:
		655	error = 0;
		656	goto done;
		657
		658	case JXL_DEC_ERROR:
		659	error = "JxlDecoderProcessInput failed";
		660	goto done;
		661
		662	case JXL_DEC_NEED_MORE_INPUT:
		663	error = "incomplete file";
		664	goto done;
		665
		666	case JXL_DEC_SUCCESS:
		667	error = "incomplete decode";
		668	goto done;
		669
		670	case JXL_DEC_BASIC_INFO:
		671	{
		672	status = JxlDecoderGetBasicInfo (dec, &info);
		673	error = "JxlDecoderGetBasicInfo failed";
		674	if (status != JXL_DEC_SUCCESS)
		675	goto done;
		676
		677	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
		678	error = "unable to allocate pixbuf";
		679	if (!RETVAL)
		680	goto done;
		681
		682	JxlPixelFormat format = {
		683	info.alpha_bits ? 4 : 3,
		684	JXL_TYPE_UINT8,
		685	JXL_NATIVE_ENDIAN,
		686	gdk_pixbuf_get_rowstride (RETVAL)
		687	};
		688
		689	// cannot use gdk_pixbuf_get_byte_length because that does
		690	// not return the size of the buffer, but the size of the buffer without
		691	// the last padding bytes. the internal buffer is rowstride * ysize,
		692	// and this is what the jxl decoder needs. none of this is documented
		693	// in either library, of course.
		694
		695	status = JxlDecoderSetImageOutBuffer (
		696	dec,
		697	&format,
		698	gdk_pixbuf_get_pixels (RETVAL),
		699	gdk_pixbuf_get_rowstride (RETVAL) * info.ysize
		700	);
		701	error = "JxlDecoderSetImageOutBuffer failed";
		702	if (status != JXL_DEC_SUCCESS)
		703	goto done;
		704	}
		705	break;
		706
		707	default:
		708	error = "unexpected event";
		709	goto done;
		710	}
		711	}
		712
		713	done:
		714	if (dec)
		715	JxlDecoderDestroy (dec);
		716
		717	perlinterp_acquire ();
		718
		719	if (runner_cache)
		720	JxlThreadParallelRunnerDestroy (runner);
		721
		722	runner_cache = runner;
		723
		724	if (error)
		725	{
		726	if (RETVAL)
		727	g_object_unref (RETVAL);
		728
		729	croak ("load_jxl: %s (status %d)", error, status);
		730	}
		731	#else
		732	croak ("load_jxl: jpeg-xl not enabled at compile time");
		733	#endif
		734	}
		735	OUTPUT:
		736	RETVAL
		737
		738	GdkPixbuf_noinc *
		739	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		740	CODE:
		741	{
		742	struct jpeg_decompress_struct cinfo;
		743	struct jpg_err_mgr jerr;
		744	int rs;
		745	volatile GdkPixbuf *pb = 0;
		746	STRLEN data_len;
		747	guchar *data = SvPVbyte (image_data, data_len);
		748
		749	RETVAL = 0;
		750
		751	perlinterp_release ();
		752
		753	cinfo.err = jpeg_std_error (&jerr.err);
		754
		755	jerr.err.error_exit = cv_error_exit;
		756	jerr.err.output_message = cv_error_output;
		757
		758	if ((rs = setjmp (jerr.setjmp_buffer)))
		759	{
		760	jpeg_destroy_decompress (&cinfo);
		761
		762	if (pb)
		763	g_object_unref ((gpointer)pb);
		764
		765	perlinterp_acquire ();
		766	XSRETURN_UNDEF;
		767	}
		768
		769	if (!data_len)
		770	longjmp (jerr.setjmp_buffer, 4);
		771
		772	jpeg_create_decompress (&cinfo);
		773	cv_jpeg_mem_src (&cinfo, data, data_len);
		774
		775	jpeg_read_header (&cinfo, TRUE);
		776
		777	cinfo.dct_method = JDCT_DEFAULT;
		778	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
		779	cinfo.do_block_smoothing = FALSE;
		780	cinfo.out_color_space = JCS_RGB;
		781	cinfo.quantize_colors = FALSE;
		782
		783	cinfo.scale_num = 1;
		784	cinfo.scale_denom = 1;
		785
		786	jpeg_calc_output_dimensions (&cinfo);
		787
		788	if (thumbnail)
		789	{
		790	cinfo.dct_method = JDCT_FASTEST;
		791	cinfo.do_fancy_upsampling = FALSE;
		792
		793	while (cinfo.scale_denom < 8
		794	&& cinfo.output_width >= iw*4
		795	&& cinfo.output_height >= ih*4)
		796	{
		797	cinfo.scale_denom <<= 1;
		798	jpeg_calc_output_dimensions (&cinfo);
		799	}
		800	}
		801
		802	if (cinfo.output_components != 3)
		803	longjmp (jerr.setjmp_buffer, 3);
		804
		805	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		806	{
		807	cinfo.out_color_space = JCS_CMYK;
		808	cinfo.output_components = 4;
		809	}
		810
		811	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
		812	if (!RETVAL)
		813	longjmp (jerr.setjmp_buffer, 2);
		814
		815	data = gdk_pixbuf_get_pixels (RETVAL);
		816	rs = gdk_pixbuf_get_rowstride (RETVAL);
		817
		818	jpeg_start_decompress (&cinfo);
		819
		820	while (cinfo.output_scanline < cinfo.output_height)
		821	{
		822	int remaining = cinfo.output_height - cinfo.output_scanline;
		823	JSAMPROW rp[4];
		824
		825	rp [0] = data + cinfo.output_scanline * rs;
		826	rp [1] = (guchar *)rp [0] + rs;
		827	rp [2] = (guchar *)rp [1] + rs;
		828	rp [3] = (guchar *)rp [2] + rs;
		829
		830	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
		831	}
		832
		833	if (cinfo.out_color_space == JCS_CMYK)
		834	{
		835	guchar end = data + cinfo.output_height rs;
		836
		837	while (data < end)
		838	{
		839	U32 c = data [0];
		840	U32 m = data [1];
		841	U32 y = data [2];
		842	U32 k = data [3];
		843
		844	if (0)
		845	if (cinfo.Adobe_transform == 2)
		846	{
		847	c ^= 0xff;
		848	m ^= 0xff;
		849	y ^= 0xff;
		850	k ^= 0xff;
		851	}
		852
		853	data [0] = (c * k + 0x80) / 0xff;
		854	data [1] = (m * k + 0x80) / 0xff;
		855	data [2] = (y * k + 0x80) / 0xff;
		856	data [3] = 0xff;
		857
		858	data += 4;
		859	}
		860	}
		861
		862	jpeg_finish_decompress (&cinfo);
		863	jpeg_destroy_decompress (&cinfo);
		864	perlinterp_acquire ();
		865	}
		866	OUTPUT:
		867	RETVAL
		868
		869	void
		870	compare (GdkPixbuf a, GdkPixbuf b)
		871	PPCODE:
		872	perlinterp_release ();
		873	{
		874	int w = gdk_pixbuf_get_width (a);
		875	int h = gdk_pixbuf_get_height (a);
		876
		877	int sa = gdk_pixbuf_get_rowstride (a);
		878	int sb = gdk_pixbuf_get_rowstride (b);
		879
		880	guchar *pa = gdk_pixbuf_get_pixels (a);
		881	guchar *pb = gdk_pixbuf_get_pixels (b);
		882
		883	int x, y;
		884
		885	assert (w == gdk_pixbuf_get_width (b));
		886	assert (h == gdk_pixbuf_get_height (b));
		887
		888	assert (gdk_pixbuf_get_n_channels (a) == 3);
		889	assert (gdk_pixbuf_get_n_channels (b) == 3);
		890
		891	double diff = 0.;
		892	int peak = 0;
		893
		894	if (w && h)
		895	for (y = 0; y < h; y++)
		896	{
		897	guchar pa_ = pa + y sa;
		898	guchar pb_ = pb + y sb;
		899
		900	for (x = 0; x < w; x++)
		901	{
		902	int d;
		903
		904	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		905	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		906	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
		907	}
		908	}
		909
		910	perlinterp_acquire ();
		911
		912	EXTEND (SP, 2);
		913	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
		914	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
		915	}
		916
124	#############################################################################	917	#############################################################################
125		918
126	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	919	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
127		920
		921	# currently only works for filenames (octet strings)
		922
		923	SV *
		924	foldcase (SV *pathsv)
		925	PROTOTYPE: $
		926	CODE:
		927	{
		928	STRLEN plen;
		929	U8 path = (U8 )SvPV (pathsv, plen);
		930	U8 *pend = path + plen;
		931	U8 dst [plen * 8 * 3], *dstp = dst;
		932
		933	while (path < pend)
		934	{
		935	U8 ch = *path;
		936
		937	if (ch >= 'a' && ch <= 'z')
		938	dstp++ = path++;
		939	else if (ch >= 'A' && ch <= 'Z')
		940	dstp++ = path++ + ('a' - 'A');
		941	else if (ch >= '0' && ch <= '9')
		942	{
		943	/* version sort, up to 8 digits */
		944	STRLEN el, nl = 0;
		945	while (path >= '0' && path <= '9' && path < pend)
		946	path++, nl++;
		947
		948	for (el = nl; el < 8; el++)
		949	*dstp++ = '0';
		950
		951	memcpy (dstp, path - nl, nl);
		952	dstp += nl;
		953	}
		954	else
		955	dstp++ = path++;
		956	#if 0
		957	else
		958	{
		959	STRLEN cl;
		960	to_utf8_fold (path, dstp, &cl);
		961	dstp += cl;
		962	path += is_utf8_char (path);
		963	}
		964	#endif
		965	}
		966
		967	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
		968	}
		969	OUTPUT:
		970	RETVAL
		971
128	GdkPixbuf_noinc *	972	GdkPixbuf_noinc *
129	p7_to_pb (int w, int h, guchar *src)	973	p7_to_pb (int w, int h, SV *src_sv)
		974	PROTOTYPE: @
130	CODE:	975	CODE:
131	{	976	{
132	int x, y;	977	int x, y;
133	guchar dst, d;	978	guchar dst, d;
134	int dstr;	979	int dstr;
		980	guchar src = (guchar )SvPVbyte_nolen (src_sv);
135		981
136	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);	982	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
137	dst = gdk_pixbuf_get_pixels (RETVAL);	983	dst = gdk_pixbuf_get_pixels (RETVAL);
138	dstr = gdk_pixbuf_get_rowstride (RETVAL);	984	dstr = gdk_pixbuf_get_rowstride (RETVAL);
139		985
…		…
148	}	994	}
149	}	995	}
150	OUTPUT:	996	OUTPUT:
151	RETVAL	997	RETVAL
152		998
		999	#############################################################################
		1000
		1001	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
		1002
		1003	void
		1004	dump_ascii85 (PerlIO fp, GdkPixbuf pb)
		1005	CODE:
		1006	{
		1007	int w = gdk_pixbuf_get_width (pb);
		1008	int h = gdk_pixbuf_get_height (pb);
		1009	int x, y, i;
		1010	guchar *dst;
		1011	int bpp = gdk_pixbuf_get_n_channels (pb);
		1012	guchar *src = gdk_pixbuf_get_pixels (pb);
		1013	int sstr = gdk_pixbuf_get_rowstride (pb);
		1014
		1015	a85_init ();
		1016
		1017	for (y = 0; y < h; y++)
		1018	for (x = 0; x < w; x++)
		1019	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		1020	a85_push (fp, src [x * bpp + y * sstr + i]);
		1021
		1022	a85_finish (fp);
		1023	}
		1024
		1025	void
		1026	dump_binary (PerlIO fp, GdkPixbuf pb)
		1027	CODE:
		1028	{
		1029	int w = gdk_pixbuf_get_width (pb);
		1030	int h = gdk_pixbuf_get_height (pb);
		1031	int x, y, i;
		1032	guchar *dst;
		1033	int bpp = gdk_pixbuf_get_n_channels (pb);
		1034	guchar *src = gdk_pixbuf_get_pixels (pb);
		1035	int sstr = gdk_pixbuf_get_rowstride (pb);
		1036
		1037	for (y = 0; y < h; y++)
		1038	for (x = 0; x < w; x++)
		1039	for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
		1040	PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
		1041	}
		1042
		1043	#############################################################################
		1044
		1045	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
		1046
153	SV *	1047	SV *
154	pb_to_p7 (GdkPixbuf *pb)	1048	pb_to_hv84 (GdkPixbuf *pb)
155	CODE:	1049	CODE:
156	{	1050	{
157	int w = gdk_pixbuf_get_width (pb);	1051	int w = gdk_pixbuf_get_width (pb);
158	int h = gdk_pixbuf_get_height (pb);	1052	int h = gdk_pixbuf_get_height (pb);
159	int x, y;	1053	int x, y;
160	guchar *dst;	1054	guchar *dst;
161	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;	1055	int bpp = gdk_pixbuf_get_n_channels (pb);
162	guchar *src = gdk_pixbuf_get_pixels (pb);	1056	guchar *src = gdk_pixbuf_get_pixels (pb);
163	int sstr = gdk_pixbuf_get_rowstride (pb);	1057	int sstr = gdk_pixbuf_get_rowstride (pb);
164	int Er[IW], Eg[IW], Eb[IW];
165	int seed = 77;
166		1058
167	RETVAL = newSV (w * h);	1059	RETVAL = newSV (6 * 8 * 12 / 8);
168	SvPOK_only (RETVAL);	1060	SvPOK_only (RETVAL);
169	SvCUR_set (RETVAL, w * h);	1061	SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
170		1062
171	dst = SvPVX (RETVAL);	1063	dst = (guchar *)SvPVX (RETVAL);
172
173	memset (Er, 0, sizeof (int) * IW);
174	memset (Eg, 0, sizeof (int) * IW);
175	memset (Eb, 0, sizeof (int) * IW);
176		1064
177	/* some primitive error distribution + random dithering */	1065	/* some primitive error distribution + random dithering */
178		1066
179	for (y = 0; y < h; y++)	1067	for (y = 0; y < h; y++)
180	{	1068	{
181	int er = 0, eg = 0, eb = 0;	1069	guchar p = src + y sstr;
182		1070
183	for (x = 0; x < w; x++)	1071	for (x = 0; x < w; x += 2)
184	{	1072	{
185	int r, g, b;	1073	unsigned int r, g, b, h, s, v, H, V1, V2;
186	guchar p = src + x bpp + y * sstr;
187		1074
188	r = ((p[0] + er + Er[x]) * 7 + 128) / 255;	1075	if (bpp == 3)
189	g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255;	1076	r = p++, g = p++, b = *p++;
190	b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255;	1077	else if (bpp == 1)
		1078	r = g = b = *p++;
		1079	else
		1080	abort ();
191		1081
192	r = r > 7 ? 7 : r < 0 ? 0 : r;	1082	rgb_to_hsv (r, g, b, &h, &s, &v);
193	g = g > 7 ? 7 : g < 0 ? 0 : g;
194	b = b > 3 ? 3 : b < 0 ? 0 : b;
195		1083
196	er += p[0] - (r * 255 + 4) / 7;	1084	H = (h * 15 / 255) << 4;
197	eg += p[1] - (g * 255 + 4) / 7;	1085	V1 = v;
198	eb += p[2] - (b * 255 + 2) / 3;
199		1086
200	Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3;	1087	if (bpp == 3)
201	Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3;	1088	r = p++, g = p++, b = *p++;
202	Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3;	1089	else if (bpp == 1)
		1090	r = g = b = *p++;
		1091	else
		1092	abort ();
203		1093
204	*dst++ = r << 5 \| g << 2 \| b;	1094	rgb_to_hsv (r, g, b, &h, &s, &v);
		1095
		1096	H \|= h * 15 / 255;
		1097	V2 = v;
		1098
		1099	*dst++ = H;
		1100	*dst++ = V1;
		1101	*dst++ = V2;
205	}	1102	}
206	}	1103	}
207	}	1104	}
208	OUTPUT:	1105	OUTPUT:
209	RETVAL	1106	RETVAL
210		1107
		1108	SV *
		1109	hv84_to_av (unsigned char *hv84)
		1110	CODE:
		1111	{
		1112	int i = 72 / 3;
		1113	AV *av = newAV ();
		1114
		1115	RETVAL = (SV )newRV_noinc ((SV )av);
		1116	while (i--)
		1117	{
		1118	int h = *hv84++;
		1119	int v1 = *hv84++;
		1120	int v2 = *hv84++;
		1121
		1122	av_push (av, newSViv (v1));
		1123	av_push (av, newSViv ((h >> 4) * 255 / 15));
		1124	av_push (av, newSViv (v2));
		1125	av_push (av, newSViv ((h & 15) * 255 / 15));
		1126	}
		1127	}
		1128	OUTPUT:
		1129	RETVAL
		1130
211	#############################################################################	1131	#############################################################################
212		1132
213	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript	1133	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
214		1134
215	void	1135	SV *
216	dump_pb (PerlIO fp, GdkPixbuf pb)	1136	extract_features (SV *ar)
217	CODE:	1137	CODE:
218	{	1138	{
219	int w = gdk_pixbuf_get_width (pb);	1139	int i;
220	int h = gdk_pixbuf_get_height (pb);	1140	AV av, result;
221	int x, y, i;
222	guchar *dst;
223	int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;
224	guchar *src = gdk_pixbuf_get_pixels (pb);
225	int sstr = gdk_pixbuf_get_rowstride (pb);
226		1141
227	a85_init ();	1142	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
		1143	croak ("Not an array ref as first argument to extract_features");
228		1144
229	for (y = 0; y < h; y++)	1145	av = (AV *) SvRV (ar);
230	for (x = 0; x < w; x++)	1146	result = newAV ();
231	for (i = 0; i < 3; i++)
232	a85_push (fp, src [x * bpp + y * sstr + i]);
233		1147
234	a85_finish (fp);	1148	for (i = 0; i <= av_len (av); ++i)
235	}	1149	{
		1150	SV sv = av_fetch (av, i, 1);
		1151	SV histsv = newSV (9 sizeof (float) + 1);
236		1152
		1153	SvPOK_on (histsv);
		1154	SvCUR_set (histsv, 9 * sizeof (float));
		1155	float hist = (float )SvPVX (histsv);
237		1156
		1157	struct feature f_h, f_s, f_v;
		1158	feature_init (&f_h);
		1159	feature_init (&f_s);
		1160	feature_init (&f_v);
238		1161
		1162	{
		1163	STRLEN len;
		1164	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		1165	while (len >= 3)
		1166	{
		1167	unsigned int r, g, b, h, s, v;
		1168	r = buf++; g = buf++; b = *buf++;
		1169	rgb_to_hsv (r, g, b, &h, &s, &v);
239		1170
		1171	feature_update_pass_1 (&f_h, h);
		1172	feature_update_pass_1 (&f_s, s);
		1173	feature_update_pass_1 (&f_v, v);
		1174
		1175	len -= 3;
		1176	}
		1177
		1178	feature_finish_pass_1 (&f_h);
		1179	feature_finish_pass_1 (&f_s);
		1180	feature_finish_pass_1 (&f_v);
		1181	}
		1182
		1183	{
		1184	STRLEN len;
		1185	unsigned char buf = (unsigned char )SvPVbyte (sv, len);
		1186	while (len >= 3)
		1187	{
		1188	unsigned int r, g, b, h, s, v;
		1189	r = buf++; g = buf++; b = *buf++;
		1190	rgb_to_hsv (r, g, b, &h, &s, &v);
		1191
		1192	feature_update_pass_2 (&f_h, h);
		1193	feature_update_pass_2 (&f_s, s);
		1194	feature_update_pass_2 (&f_v, v);
		1195
		1196	len -= 3;
		1197	}
		1198
		1199	feature_finish_pass_2 (&f_h);
		1200	feature_finish_pass_2 (&f_s);
		1201	feature_finish_pass_2 (&f_v);
		1202	}
		1203
		1204	hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.;
		1205	hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ;
		1206	hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5;
		1207
		1208	av_push (result, histsv);
		1209	}
		1210
		1211	RETVAL = newRV_noinc ((SV *)result);
		1212	}
		1213	OUTPUT:
		1214	RETVAL
		1215

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Comparing CV/CV.xs (file contents): Revision 1.6 by root, Wed Nov 12 00:59:01 2003 UTC vs. Revision 1.68 by root, Fri May 12 02:11:10 2023 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.6 by root, Wed Nov 12 00:59:01 2003 UTC vs.
Revision 1.68 by root, Fri May 12 02:11:10 2023 UTC