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

Comparing CV/CV.xs (file contents):
Revision 1.38 by root, Thu Jun 22 22:06:00 2006 UTC vs.
Revision 1.59 by root, Sat Apr 10 03:32:09 2021 UTC

…		…
7	#include <math.h>	7	#include <math.h>
8		8
9	#include <magic.h>	9	#include <magic.h>
10		10
11	#include <jpeglib.h>	11	#include <jpeglib.h>
		12	#include <jerror.h>
		13
12	#include <glib.h>	14	#include <glib.h>
13	#include <gtk/gtk.h>	15	#include <gtk/gtk.h>
		16	#include <gdk/gdkx.h>
14	#include <gdk-pixbuf/gdk-pixbuf.h>	17	#include <gdk-pixbuf/gdk-pixbuf.h>
15		18
16	#include <gperl.h>	19	#include <gperl.h>
17	#include <gtk2perl.h>	20	#include <gtk2perl.h>
18		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
19	#define IW 80 /* MUST match Schnauzer.pm! */	36	#define IW 80 /* MUST match Schnauzer.pm! */
20	#define IH 60 /* MUST match Schnauzer.pm! */	37	#define IH 60 /* MUST match Schnauzer.pm! */
21		38
22	#define RAND (seed = (seed + 7141) * 54773 % 134456)
23
24	#define LINELENGTH 240	39	#define LINELENGTH 240
25		40
26	#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 */
27		46
28	struct jpg_err_mgr	47	struct jpg_err_mgr
29	{	48	{
30	struct jpeg_error_mgr err;	49	struct jpeg_error_mgr err;
31	jmp_buf setjmp_buffer;	50	jmp_buf setjmp_buffer;
32	};	51	};
33		52
34	static void	53	static void
35	cv_error_exit (j_common_ptr cinfo)	54	cv_error_exit (j_common_ptr cinfo)
36	{	55	{
		56	cinfo->err->output_message (cinfo);
37	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	57	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
38	}	58	}
39		59
40	static void	60	static void
41	cv_error_output (j_common_ptr cinfo)	61	cv_error_output (j_common_ptr cinfo)
42	{	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);
43	return;	68	return;
44	}	69	}
45		70
46	static void	71	static void
47	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,
…		…
144	if (!--a85_cnt)	169	if (!--a85_cnt)
145	{	170	{
146	a85_cnt = 4;	171	a85_cnt = 4;
147	if (a85_val)	172	if (a85_val)
148	{	173	{
149	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
150	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	175	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
151	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	176	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
152	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	177	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
153	a85_ptr[0] = (a85_val ) + 33;	178	a85_ptr[0] = (a85_val ) + 33;
154		179
155	a85_ptr += 5;	180	a85_ptr += 5;
156	}	181	}
…		…
179		204
180	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	205	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
181	}	206	}
182		207
183	/////////////////////////////////////////////////////////////////////////////	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	/////////////////////////////////////////////////////////////////////////////
184		303
185	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	304	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
186		305
187	PROTOTYPES: ENABLE	306	PROTOTYPES: ENABLE
188		307
		308	# calculate the common prefix length of two strings
189	# missing function in perl. really :)	309	# missing function in perl. really :)
190	int	310	int
191	common_prefix_length (a, b)	311	common_prefix_length (a, b)
192	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);	312	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
193	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);	313	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
…		…
202		322
203	OUTPUT:	323	OUTPUT:
204	RETVAL	324	RETVAL
205		325
206	const char *	326	const char *
207	magic (const char *path)	327	magic (SV *path_or_data)
		328	ALIAS:
		329	magic = 0
		330	magic_mime = 1
		331	magic_buffer = 2
		332	magic_buffer_mime = 3
208	CODE:	333	CODE:
209	{	334	{
210	static magic_t cookie;	335	STRLEN len;
		336	char *data = SvPVbyte (path_or_data, len);
211		337
212	if (!cookie)	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);
213	{	344	}
214	cookie = magic_open (MAGIC_NONE);
215		345
216	if (cookie)	346	perlinterp_release ();
217	magic_load (cookie, 0);
218	else
219	XSRETURN_UNDEF;
220	}
221		347
222	RETVAL = magic_file (cookie, path);	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 ();
223	}	353	}
224	OUTPUT:	354	OUTPUT:
225	RETVAL	355	RETVAL
226		356
227	const char *
228	magic_mime (const char *path)
229	CODE:
230	{
231	static magic_t cookie;
232
233	if (!cookie)
234	{
235	cookie = magic_open (MAGIC_MIME);
236
237	if (cookie)
238	magic_load (cookie, 0);
239	else
240	XSRETURN_UNDEF;
241	}
242
243	RETVAL = magic_file (cookie, path);
244	}
245	OUTPUT:
246	RETVAL
247
248	# 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);
249		363
250	gboolean	364	gboolean
251	gdk_net_wm_supports (GdkAtom property)	365	gdk_net_wm_supports (GdkAtom property)
252	CODE:	366	CODE:
253	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)	367	#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
…		…
259	RETVAL	373	RETVAL
260		374
261	GdkPixbuf_noinc *	375	GdkPixbuf_noinc *
262	dealpha_expose (GdkPixbuf *pb)	376	dealpha_expose (GdkPixbuf *pb)
263	CODE:	377	CODE:
		378	perlinterp_release ();
264	{	379	{
265	int w = gdk_pixbuf_get_width (pb);	380	int w = gdk_pixbuf_get_width (pb);
266	int h = gdk_pixbuf_get_height (pb);	381	int h = gdk_pixbuf_get_height (pb);
267	int bpp = gdk_pixbuf_get_n_channels (pb);	382	int bpp = gdk_pixbuf_get_n_channels (pb);
268	int x, y, i;	383	int x, y, i;
…		…
277	for (x = 0; x < w; x++)	392	for (x = 0; x < w; x++)
278	for (y = 0; y < h; y++)	393	for (y = 0; y < h; y++)
279	for (i = 0; i < 3; i++)	394	for (i = 0; i < 3; i++)
280	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];	395	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
281	}	396	}
		397	perlinterp_acquire ();
282	OUTPUT:	398	OUTPUT:
283	RETVAL	399	RETVAL
284		400
285	GdkPixbuf_noinc *	401	GdkPixbuf_noinc *
286	rotate (GdkPixbuf *pb, int angle)	402	rotate (GdkPixbuf *pb, int angle)
287	CODE:	403	CODE:
		404	perlinterp_release ();
		405	if (angle < 0)
		406	angle += 360;
288	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE	407	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
289	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE	408	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
290	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN	409	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
291	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE	410	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
292	: angle);	411	: angle);
		412	perlinterp_acquire ();
293	OUTPUT:	413	OUTPUT:
294	RETVAL	414	RETVAL
295		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
		457	XSRETURN_UNDEF;
		458	}
		459	OUTPUT:
		460	RETVAL
		461
296	GdkPixbuf_noinc *	462	GdkPixbuf_noinc *
297	load_jpeg (SV *path, int thumbnail=0)	463	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		464	CODE:
		465	{
		466	#if WEBP
		467	STRLEN data_size;
		468	int alpha;
		469	WebPData data;
		470	WebPDemuxer *demux;
		471	WebPIterator iter;
		472	WebPDecoderConfig config;
		473	int inw, inh;
		474
		475	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		476	data.size = data_size;
		477
		478	perlinterp_release ();
		479
		480	RETVAL = 0;
		481
		482	if (!(demux = WebPDemux (&data)))
		483	goto err_demux;
		484
		485	if (!WebPDemuxGetFrame (demux, 1, &iter))
		486	goto err_iter;
		487
		488	if (!WebPInitDecoderConfig (&config))
		489	goto err_iter;
		490
		491	config.options.use_threads = 1;
		492
		493	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		494	goto err_iter;
		495
		496	inw = config.input.width;
		497	inh = config.input.height;
		498
		499	if (thumbnail)
		500	{
		501	if (inw * ih > inh * iw)
		502	ih = (iw * inh + inw - 1) / inw;
		503	else
		504	iw = (ih * inw + inh - 1) / inh;
		505
		506	config.options.bypass_filtering = 1;
		507	config.options.no_fancy_upsampling = 1;
		508
		509	config.options.use_scaling = 1;
		510	config.options.scaled_width = iw;
		511	config.options.scaled_height = ih;
		512	}
		513	else
		514	{
		515	iw = inw;
		516	ih = inh;
		517	}
		518
		519	alpha = !!config.input.has_alpha;
		520
		521	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		522	if (!RETVAL)
		523	goto err_iter;
		524
		525	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		526	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		527	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		528	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		529	config.output.is_external_memory = 1;
		530
		531	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		532	{
		533	g_object_unref (RETVAL);
		534	RETVAL = 0;
		535	goto err_iter;
		536	}
		537
		538	err_iter:
		539	WebPDemuxReleaseIterator (&iter);
		540	err_demux:
		541	WebPDemuxDelete (demux);
		542
		543	perlinterp_acquire ();
		544	#else
		545	croak ("load_webp: webp not enabled at compile time");
		546	#endif
		547	}
		548	OUTPUT:
		549	RETVAL
		550
		551	GdkPixbuf_noinc *
		552	decode_jxl (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		553	CODE:
		554	{
		555	#if JXL
		556	JxlDecoder *dec = JxlDecoderCreate (0);
		557	JxlBasicInfo info;
		558	const uint8_t next_in = (uint8_t )SvPVbyte_nolen (image_data);
		559	size_t avail_in = SvCUR (image_data);
		560	const char *error = 0;
		561	void *runner = 0;
		562	struct bmff_box box;
		563
		564	perlinterp_release ();
		565
		566	RETVAL = 0;
		567
		568	error = "JxlDecoderCreate failed";
		569	if (!dec)
		570	goto done;
		571
		572	runner = JxlThreadParallelRunnerCreate (0, JxlThreadParallelRunnerDefaultNumWorkerThreads ());
		573
		574	error = "JxlDecoderSetParallelRunner failed";
		575	if (JxlDecoderSetParallelRunner (dec, JxlThreadParallelRunner, runner) != JXL_DEC_SUCCESS)
		576	goto done;
		577
		578	error = "JxlDecoderSubscribeEvents failed";
		579	if (JxlDecoderSubscribeEvents (dec, JXL_DEC_FULL_IMAGE \| JXL_DEC_BASIC_INFO) != JXL_DEC_SUCCESS)
		580	goto done;
		581
		582	error = "JxlDecoderSetInput failed";
		583	if (JxlDecoderSetInput (dec, next_in, avail_in) != JXL_DEC_SUCCESS)
		584	goto done;
		585
		586	for (;;)
		587	{
		588	JxlDecoderStatus status = JxlDecoderProcessInput (dec);
		589
		590	printf ("status %d\n",status);
		591
		592	switch (status)
		593	{
		594	case JXL_DEC_ERROR:
		595	error = "JxlDecoderProcessInput failed";
		596	goto done;
		597
		598	case JXL_DEC_NEED_MORE_INPUT:
		599	error = "incomplete file";
		600	goto done;
		601
		602	case JXL_DEC_SUCCESS:
		603	goto done;
		604
		605	case JXL_DEC_NEED_IMAGE_OUT_BUFFER:
		606	{
		607	error = "JxlDecoderGetBasicInfo failed";
		608	if (JxlDecoderGetBasicInfo (dec, &info) != JXL_DEC_SUCCESS)
		609	goto done;
		610
		611	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, !!info.alpha_bits, 8, info.xsize, info.ysize);
		612	error = "unable to allocate pixbuf";
		613	if (!RETVAL)
		614	goto done;
		615
		616	JxlPixelFormat format = {
		617	info.alpha_bits ? 4 : 3,
		618	JXL_TYPE_UINT8,
		619	JXL_NATIVE_ENDIAN,
		620	gdk_pixbuf_get_rowstride (RETVAL)
		621	};
		622
		623	error = "JxlDecoderSetImageOutBuffer failed";
		624	if (JxlDecoderSetImageOutBuffer (
		625	dec,
		626	&format,
		627	gdk_pixbuf_get_pixels (RETVAL),
		628	gdk_pixbuf_get_byte_length (RETVAL)
		629	) != JXL_DEC_SUCCESS)
		630	goto done;
		631	}
		632	break;
		633
		634	default:
		635	error = "unexpected event";
		636	goto done;
		637	}
		638	}
		639
		640	done:
		641	if (dec)
		642	JxlDecoderDestroy (dec);
		643
		644	if (runner)
		645	JxlThreadParallelRunnerDestroy (runner);
		646
		647	perlinterp_acquire ();
		648
		649	if (error)
		650	{
		651	if (RETVAL)
		652	g_object_unref (RETVAL);
		653
		654	croak ("load_jxl: %s", error);
		655	}
		656	#else
		657	croak ("load_jxl: jpeg-xl not enabled at compile time");
		658	#endif
		659	}
		660	OUTPUT:
		661	RETVAL
		662
		663	GdkPixbuf_noinc *
		664	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
298	CODE:	665	CODE:
299	{	666	{
300	struct jpeg_decompress_struct cinfo;	667	struct jpeg_decompress_struct cinfo;
301	struct jpg_err_mgr jerr;	668	struct jpg_err_mgr jerr;
302	guchar *data;
303	int rs;	669	int rs;
304	FILE *fp;
305	volatile GdkPixbuf *pb = 0;	670	volatile GdkPixbuf *pb = 0;
		671	STRLEN data_len;
		672	guchar *data = SvPVbyte (image_data, data_len);
306		673
307	RETVAL = 0;	674	RETVAL = 0;
308		675
309	fp = fopen (SvPVbyte_nolen (path), "rb");	676	perlinterp_release ();
310
311	if (!fp)
312	XSRETURN_UNDEF;
313		677
314	cinfo.err = jpeg_std_error (&jerr.err);	678	cinfo.err = jpeg_std_error (&jerr.err);
315		679
316	jerr.err.error_exit = cv_error_exit;	680	jerr.err.error_exit = cv_error_exit;
317	jerr.err.output_message = cv_error_output;	681	jerr.err.output_message = cv_error_output;
318		682
319	if ((rs = setjmp (jerr.setjmp_buffer)))	683	if ((rs = setjmp (jerr.setjmp_buffer)))
320	{	684	{
321	fclose (fp);
322	jpeg_destroy_decompress (&cinfo);	685	jpeg_destroy_decompress (&cinfo);
323		686
324	if (pb)	687	if (pb)
325	g_object_unref ((gpointer)pb);	688	g_object_unref ((gpointer)pb);
326		689
		690	perlinterp_acquire ();
327	XSRETURN_UNDEF;	691	XSRETURN_UNDEF;
328	}	692	}
329		693
		694	if (!data_len)
		695	longjmp (jerr.setjmp_buffer, 4);
		696
330	jpeg_create_decompress (&cinfo);	697	jpeg_create_decompress (&cinfo);
		698	cv_jpeg_mem_src (&cinfo, data, data_len);
331		699
332	jpeg_stdio_src (&cinfo, fp);
333	jpeg_read_header (&cinfo, TRUE);	700	jpeg_read_header (&cinfo, TRUE);
334		701
335	cinfo.dct_method = JDCT_DEFAULT;	702	cinfo.dct_method = JDCT_DEFAULT;
336	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	703	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
337	cinfo.do_block_smoothing = FALSE;	704	cinfo.do_block_smoothing = FALSE;
…		…
347	{	714	{
348	cinfo.dct_method = JDCT_FASTEST;	715	cinfo.dct_method = JDCT_FASTEST;
349	cinfo.do_fancy_upsampling = FALSE;	716	cinfo.do_fancy_upsampling = FALSE;
350		717
351	while (cinfo.scale_denom < 8	718	while (cinfo.scale_denom < 8
352	&& cinfo.output_width >= IW*4	719	&& cinfo.output_width >= iw*4
353	&& cinfo.output_height >= IH*4)	720	&& cinfo.output_height >= ih*4)
354	{	721	{
355	cinfo.scale_denom <<= 1;	722	cinfo.scale_denom <<= 1;
356	jpeg_calc_output_dimensions (&cinfo);	723	jpeg_calc_output_dimensions (&cinfo);
357	}	724	}
358	}	725	}
359		726
		727	if (cinfo.output_components != 3)
		728	longjmp (jerr.setjmp_buffer, 3);
		729
		730	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		731	{
		732	cinfo.out_color_space = JCS_CMYK;
		733	cinfo.output_components = 4;
		734	}
		735
360	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	736	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
361	if (!RETVAL)	737	if (!RETVAL)
362	longjmp (jerr.setjmp_buffer, 2);	738	longjmp (jerr.setjmp_buffer, 2);
363		739
364	data = gdk_pixbuf_get_pixels (RETVAL);	740	data = gdk_pixbuf_get_pixels (RETVAL);
365	rs = gdk_pixbuf_get_rowstride (RETVAL);	741	rs = gdk_pixbuf_get_rowstride (RETVAL);
366
367	if (cinfo.output_components != 3)
368	longjmp (jerr.setjmp_buffer, 3);
369		742
370	jpeg_start_decompress (&cinfo);	743	jpeg_start_decompress (&cinfo);
371		744
372	while (cinfo.output_scanline < cinfo.output_height)	745	while (cinfo.output_scanline < cinfo.output_height)
373	{	746	{
…		…
380	rp [3] = (guchar *)rp [2] + rs;	753	rp [3] = (guchar *)rp [2] + rs;
381		754
382	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	755	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
383	}	756	}
384		757
		758	if (cinfo.out_color_space == JCS_CMYK)
		759	{
		760	guchar end = data + cinfo.output_height rs;
		761
		762	while (data < end)
		763	{
		764	U32 c = data [0];
		765	U32 m = data [1];
		766	U32 y = data [2];
		767	U32 k = data [3];
		768
		769	if (0)
		770	if (cinfo.Adobe_transform == 2)
		771	{
		772	c ^= 0xff;
		773	m ^= 0xff;
		774	y ^= 0xff;
		775	k ^= 0xff;
		776	}
		777
		778	data [0] = (c * k + 0x80) / 0xff;
		779	data [1] = (m * k + 0x80) / 0xff;
		780	data [2] = (y * k + 0x80) / 0xff;
		781	data [3] = 0xff;
		782
		783	data += 4;
		784	}
		785	}
		786
385	jpeg_finish_decompress (&cinfo);	787	jpeg_finish_decompress (&cinfo);
386	fclose (fp);
387	jpeg_destroy_decompress (&cinfo);	788	jpeg_destroy_decompress (&cinfo);
		789	perlinterp_acquire ();
388	}	790	}
389	OUTPUT:	791	OUTPUT:
390	RETVAL	792	RETVAL
391		793
392	void	794	void
393	compare (GdkPixbuf a, GdkPixbuf b)	795	compare (GdkPixbuf a, GdkPixbuf b)
394	PPCODE:	796	PPCODE:
		797	perlinterp_release ();
395	{	798	{
396	int w = gdk_pixbuf_get_width (a);	799	int w = gdk_pixbuf_get_width (a);
397	int h = gdk_pixbuf_get_height (a);	800	int h = gdk_pixbuf_get_height (a);
		801
398	int sa = gdk_pixbuf_get_rowstride (a);	802	int sa = gdk_pixbuf_get_rowstride (a);
399	int sb = gdk_pixbuf_get_rowstride (b);	803	int sb = gdk_pixbuf_get_rowstride (b);
400		804
401	guchar *pa = gdk_pixbuf_get_pixels (a);	805	guchar *pa = gdk_pixbuf_get_pixels (a);
402	guchar *pb = gdk_pixbuf_get_pixels (b);	806	guchar *pb = gdk_pixbuf_get_pixels (b);
…		…
426	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	830	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
427	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	831	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
428	}	832	}
429	}	833	}
430		834
		835	perlinterp_acquire ();
		836
431	EXTEND (SP, 2);	837	EXTEND (SP, 2);
432	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));	838	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
433	PUSHs (sv_2mortal (newSVnv (peak / 255.)));	839	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
434	}	840	}
435		841
436	#############################################################################	842	#############################################################################
437		843
438	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer	844	MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
439		845
		846	# currently only works for filenames (octet strings)
		847
440	SV *	848	SV *
441	foldcase (SV *pathsv)	849	foldcase (SV *pathsv)
442	PROTOTYPE: $	850	PROTOTYPE: $
443	CODE:	851	CODE:
444	{	852	{
445	STRLEN plen;	853	STRLEN plen;
446	U8 path = (U8 )SvPVutf8 (pathsv, plen);	854	U8 path = (U8 )SvPV (pathsv, plen);
447	U8 *pend = path + plen;	855	U8 *pend = path + plen;
448	U8 dst [plen * 6 * 3], *dstp = dst;	856	U8 dst [plen * 6 * 3], *dstp = dst;
449		857
450	while (path < pend)	858	while (path < pend)
451	{	859	{
452	U8 ch = *path;	860	U8 ch = *path;
453		861
454	if (ch >= 'a' && ch <= 'z')	862	if (ch >= 'a' && ch <= 'z')
455	dstp++ = path++;	863	dstp++ = path++;
		864	else if (ch >= 'A' && ch <= 'Z')
		865	dstp++ = path++ + ('a' - 'A');
456	else if (ch >= '0' && ch <= '9')	866	else if (ch >= '0' && ch <= '9')
457	{	867	{
458	STRLEN el, nl = 0;	868	STRLEN el, nl = 0;
459	while (path >= '0' && path <= '9' && path < pend)	869	while (path >= '0' && path <= '9' && path < pend)
460	path++, nl++;	870	path++, nl++;
…		…
463	*dstp++ = '0';	873	*dstp++ = '0';
464		874
465	memcpy (dstp, path - nl, nl);	875	memcpy (dstp, path - nl, nl);
466	dstp += nl;	876	dstp += nl;
467	}	877	}
		878	else
		879	dstp++ = path++;
		880	#if 0
468	else	881	else
469	{	882	{
470	STRLEN cl;	883	STRLEN cl;
471	to_utf8_fold (path, dstp, &cl);	884	to_utf8_fold (path, dstp, &cl);
472	dstp += cl;	885	dstp += cl;
473	path += is_utf8_char (path);	886	path += is_utf8_char (path);
474	}	887	}
		888	#endif
475	}	889	}
476		890
477	RETVAL = newSVpvn ((const char *)dst, dstp - dst);	891	RETVAL = newSVpvn ((const char *)dst, dstp - dst);
478	}	892	}
479	OUTPUT:	893	OUTPUT:
…		…
648	{	1062	{
649	int i;	1063	int i;
650	AV av, result;	1064	AV av, result;
651		1065
652	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)	1066	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
653	croak ("Not an array ref as first argument to make_histogram");	1067	croak ("Not an array ref as first argument to extract_features");
654		1068
655	av = (AV *) SvRV (ar);	1069	av = (AV *) SvRV (ar);
656	result = newAV ();	1070	result = newAV ();
657		1071
658	for (i = 0; i <= av_len (av); ++i)	1072	for (i = 0; i <= av_len (av); ++i)
…		…
721	RETVAL = newRV_noinc ((SV *)result);	1135	RETVAL = newRV_noinc ((SV *)result);
722	}	1136	}
723	OUTPUT:	1137	OUTPUT:
724	RETVAL	1138	RETVAL
725		1139
726	SV *
727	make_histograms (SV *ar)
728	CODE:
729	{
730	int i;
731	AV av, result;
732
733	if (!SvROK (ar) \|\| SvTYPE (SvRV (ar)) != SVt_PVAV)
734	croak ("Not an array ref as first argument to make_histogram");
735
736	av = (AV *) SvRV (ar);
737	result = newAV ();
738
739	for (i = 0; i <= av_len (av); ++i)
740	{
741	const int HISTSIZE = 64;
742
743	int j;
744	SV sv = av_fetch (av, i, 1);
745	STRLEN len;
746	char *buf = SvPVbyte (sv, len);
747
748	int tmphist[HISTSIZE];
749	float *hist;
750
751	SV histsv = newSV (HISTSIZE sizeof (float) + 1);
752	SvPOK_on (histsv);
753	SvCUR_set (histsv, HISTSIZE * sizeof (float));
754	hist = (float *)SvPVX (histsv);
755
756	Zero (tmphist, sizeof (tmphist), char);
757
758	for (j = len; j--; )
759	{
760	unsigned int idx
761	= ((*buf & 0xc0) >> 2)
762	\| ((*buf & 0x18) >> 1)
763	\| (*buf & 0x03);
764
765	++tmphist[idx];
766	++buf;
767	}
768
769	for (j = 0; j < HISTSIZE; ++j)
770	hist[j] = (float)tmphist[j] / (len + 1e-30);
771
772	av_push (result, histsv);
773	}
774
775	RETVAL = newRV_noinc ((SV *)result);
776	}
777	OUTPUT:
778	RETVAL
779
780

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Comparing CV/CV.xs (file contents): Revision 1.38 by root, Thu Jun 22 22:06:00 2006 UTC vs. Revision 1.59 by root, Sat Apr 10 03:32:09 2021 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.38 by root, Thu Jun 22 22:06:00 2006 UTC vs.
Revision 1.59 by root, Sat Apr 10 03:32:09 2021 UTC