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

Comparing CV/CV.xs (file contents):
Revision 1.41 by root, Sat Mar 1 04:11:26 2008 UTC vs.
Revision 1.61 by root, Sun Jul 25 11:24:48 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);
223	}
224	OUTPUT:
225	RETVAL	348	RETVAL = ix & 2
		349	? magic_buffer (magic_cookie[ix & 1], data, len)
		350	: magic_file (magic_cookie[ix & 1], data);
226		351
227	const char *	352	perlinterp_acquire ();
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	}	353	}
245	OUTPUT:	354	OUTPUT:
246	RETVAL	355	RETVAL
247		356
248	# missing/broken in Gtk2 perl module	357	# missing/broken in Gtk2 perl module
…		…
264	RETVAL	373	RETVAL
265		374
266	GdkPixbuf_noinc *	375	GdkPixbuf_noinc *
267	dealpha_expose (GdkPixbuf *pb)	376	dealpha_expose (GdkPixbuf *pb)
268	CODE:	377	CODE:
		378	perlinterp_release ();
269	{	379	{
270	int w = gdk_pixbuf_get_width (pb);	380	int w = gdk_pixbuf_get_width (pb);
271	int h = gdk_pixbuf_get_height (pb);	381	int h = gdk_pixbuf_get_height (pb);
272	int bpp = gdk_pixbuf_get_n_channels (pb);	382	int bpp = gdk_pixbuf_get_n_channels (pb);
273	int x, y, i;	383	int x, y, i;
…		…
282	for (x = 0; x < w; x++)	392	for (x = 0; x < w; x++)
283	for (y = 0; y < h; y++)	393	for (y = 0; y < h; y++)
284	for (i = 0; i < 3; i++)	394	for (i = 0; i < 3; i++)
285	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];
286	}	396	}
		397	perlinterp_acquire ();
287	OUTPUT:	398	OUTPUT:
288	RETVAL	399	RETVAL
289		400
290	GdkPixbuf_noinc *	401	GdkPixbuf_noinc *
291	rotate (GdkPixbuf *pb, int angle)	402	rotate (GdkPixbuf *pb, int angle)
292	CODE:	403	CODE:
		404	perlinterp_release ();
		405	if (angle < 0)
		406	angle += 360;
293	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
294	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE	408	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
295	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN	409	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
296	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE	410	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
297	: angle);	411	: angle);
		412	perlinterp_acquire ();
298	OUTPUT:	413	OUTPUT:
299	RETVAL	414	RETVAL
300		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
301	GdkPixbuf_noinc *	491	GdkPixbuf_noinc *
302	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)
303	CODE:	694	CODE:
304	{	695	{
305	struct jpeg_decompress_struct cinfo;	696	struct jpeg_decompress_struct cinfo;
306	struct jpg_err_mgr jerr;	697	struct jpg_err_mgr jerr;
307	guchar *data;
308	int rs;	698	int rs;
309	FILE *fp;
310	volatile GdkPixbuf *pb = 0;	699	volatile GdkPixbuf *pb = 0;
		700	STRLEN data_len;
		701	guchar *data = SvPVbyte (image_data, data_len);
311		702
312	RETVAL = 0;	703	RETVAL = 0;
313		704
314	fp = fopen (SvPVbyte_nolen (path), "rb");	705	perlinterp_release ();
315
316	if (!fp)
317	XSRETURN_UNDEF;
318		706
319	cinfo.err = jpeg_std_error (&jerr.err);	707	cinfo.err = jpeg_std_error (&jerr.err);
320		708
321	jerr.err.error_exit = cv_error_exit;	709	jerr.err.error_exit = cv_error_exit;
322	jerr.err.output_message = cv_error_output;	710	jerr.err.output_message = cv_error_output;
323		711
324	if ((rs = setjmp (jerr.setjmp_buffer)))	712	if ((rs = setjmp (jerr.setjmp_buffer)))
325	{	713	{
326	fclose (fp);
327	jpeg_destroy_decompress (&cinfo);	714	jpeg_destroy_decompress (&cinfo);
328		715
329	if (pb)	716	if (pb)
330	g_object_unref ((gpointer)pb);	717	g_object_unref ((gpointer)pb);
331		718
		719	perlinterp_acquire ();
332	XSRETURN_UNDEF;	720	XSRETURN_UNDEF;
333	}	721	}
334		722
		723	if (!data_len)
		724	longjmp (jerr.setjmp_buffer, 4);
		725
335	jpeg_create_decompress (&cinfo);	726	jpeg_create_decompress (&cinfo);
		727	cv_jpeg_mem_src (&cinfo, data, data_len);
336		728
337	jpeg_stdio_src (&cinfo, fp);
338	jpeg_read_header (&cinfo, TRUE);	729	jpeg_read_header (&cinfo, TRUE);
339		730
340	cinfo.dct_method = JDCT_DEFAULT;	731	cinfo.dct_method = JDCT_DEFAULT;
341	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 */
342	cinfo.do_block_smoothing = FALSE;	733	cinfo.do_block_smoothing = FALSE;
…		…
352	{	743	{
353	cinfo.dct_method = JDCT_FASTEST;	744	cinfo.dct_method = JDCT_FASTEST;
354	cinfo.do_fancy_upsampling = FALSE;	745	cinfo.do_fancy_upsampling = FALSE;
355		746
356	while (cinfo.scale_denom < 8	747	while (cinfo.scale_denom < 8
357	&& cinfo.output_width >= IW*4	748	&& cinfo.output_width >= iw*4
358	&& cinfo.output_height >= IH*4)	749	&& cinfo.output_height >= ih*4)
359	{	750	{
360	cinfo.scale_denom <<= 1;	751	cinfo.scale_denom <<= 1;
361	jpeg_calc_output_dimensions (&cinfo);	752	jpeg_calc_output_dimensions (&cinfo);
362	}	753	}
363	}	754	}
364		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
365	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);
366	if (!RETVAL)	766	if (!RETVAL)
367	longjmp (jerr.setjmp_buffer, 2);	767	longjmp (jerr.setjmp_buffer, 2);
368		768
369	data = gdk_pixbuf_get_pixels (RETVAL);	769	data = gdk_pixbuf_get_pixels (RETVAL);
370	rs = gdk_pixbuf_get_rowstride (RETVAL);	770	rs = gdk_pixbuf_get_rowstride (RETVAL);
371
372	if (cinfo.output_components != 3)
373	longjmp (jerr.setjmp_buffer, 3);
374		771
375	jpeg_start_decompress (&cinfo);	772	jpeg_start_decompress (&cinfo);
376		773
377	while (cinfo.output_scanline < cinfo.output_height)	774	while (cinfo.output_scanline < cinfo.output_height)
378	{	775	{
…		…
385	rp [3] = (guchar *)rp [2] + rs;	782	rp [3] = (guchar *)rp [2] + rs;
386		783
387	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	784	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
388	}	785	}
389		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
390	jpeg_finish_decompress (&cinfo);	816	jpeg_finish_decompress (&cinfo);
391	fclose (fp);
392	jpeg_destroy_decompress (&cinfo);	817	jpeg_destroy_decompress (&cinfo);
		818	perlinterp_acquire ();
393	}	819	}
394	OUTPUT:	820	OUTPUT:
395	RETVAL	821	RETVAL
396		822
397	void	823	void
398	compare (GdkPixbuf a, GdkPixbuf b)	824	compare (GdkPixbuf a, GdkPixbuf b)
399	PPCODE:	825	PPCODE:
		826	perlinterp_release ();
400	{	827	{
401	int w = gdk_pixbuf_get_width (a);	828	int w = gdk_pixbuf_get_width (a);
402	int h = gdk_pixbuf_get_height (a);	829	int h = gdk_pixbuf_get_height (a);
		830
403	int sa = gdk_pixbuf_get_rowstride (a);	831	int sa = gdk_pixbuf_get_rowstride (a);
404	int sb = gdk_pixbuf_get_rowstride (b);	832	int sb = gdk_pixbuf_get_rowstride (b);
405		833
406	guchar *pa = gdk_pixbuf_get_pixels (a);	834	guchar *pa = gdk_pixbuf_get_pixels (a);
407	guchar *pb = gdk_pixbuf_get_pixels (b);	835	guchar *pb = gdk_pixbuf_get_pixels (b);
…		…
431	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));
432	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));
433	}	861	}
434	}	862	}
435		863
		864	perlinterp_acquire ();
		865
436	EXTEND (SP, 2);	866	EXTEND (SP, 2);
437	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));	867	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
438	PUSHs (sv_2mortal (newSVnv (peak / 255.)));	868	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
439	}	869	}
440		870
…		…
450	CODE:	880	CODE:
451	{	881	{
452	STRLEN plen;	882	STRLEN plen;
453	U8 path = (U8 )SvPV (pathsv, plen);	883	U8 path = (U8 )SvPV (pathsv, plen);
454	U8 *pend = path + plen;	884	U8 *pend = path + plen;
455	U8 dst [plen * 6 * 3], *dstp = dst;	885	U8 dst [plen * 8 * 3], *dstp = dst;
456		886
457	while (path < pend)	887	while (path < pend)
458	{	888	{
459	U8 ch = *path;	889	U8 ch = *path;
460		890
…		…
462	dstp++ = path++;	892	dstp++ = path++;
463	else if (ch >= 'A' && ch <= 'Z')	893	else if (ch >= 'A' && ch <= 'Z')
464	dstp++ = path++ + ('a' - 'A');	894	dstp++ = path++ + ('a' - 'A');
465	else if (ch >= '0' && ch <= '9')	895	else if (ch >= '0' && ch <= '9')
466	{	896	{
		897	/* version sort, up to 8 digits */
467	STRLEN el, nl = 0;	898	STRLEN el, nl = 0;
468	while (path >= '0' && path <= '9' && path < pend)	899	while (path >= '0' && path <= '9' && path < pend)
469	path++, nl++;	900	path++, nl++;
470		901
471	for (el = nl; el < 6; el++)	902	for (el = nl; el < 8; el++)
472	*dstp++ = '0';	903	*dstp++ = '0';
473		904
474	memcpy (dstp, path - nl, nl);	905	memcpy (dstp, path - nl, nl);
475	dstp += nl;	906	dstp += nl;
476	}	907	}

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Comparing CV/CV.xs (file contents): Revision 1.41 by root, Sat Mar 1 04:11:26 2008 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 1.41 by root, Sat Mar 1 04:11:26 2008 UTC vs.
Revision 1.61 by root, Sun Jul 25 11:24:48 2021 UTC