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

Comparing CV/CV.xs (file contents):
Revision 1.43 by root, Sun May 3 08:16:47 2009 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
19	#include <assert.h>	22	#include <assert.h>
20		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
21	#define IW 80 /* MUST match Schnauzer.pm! */	36	#define IW 80 /* MUST match Schnauzer.pm! */
22	#define IH 60 /* MUST match Schnauzer.pm! */	37	#define IH 60 /* MUST match Schnauzer.pm! */
23		38
24	#define RAND (seed = (seed + 7141) * 54773 % 134456)
25
26	#define LINELENGTH 240	39	#define LINELENGTH 240
27		40
28	#define ELLIPSIS "\xe2\x80\xa6"	41	#define ELLIPSIS "\xe2\x80\xa6"
29		42
30	typedef char *octet_string;	43	typedef char *octet_string;
		44
		45	static magic_t magic_cookie[2]; /* !mime, mime */
31		46
32	struct jpg_err_mgr	47	struct jpg_err_mgr
33	{	48	{
34	struct jpeg_error_mgr err;	49	struct jpeg_error_mgr err;
35	jmp_buf setjmp_buffer;	50	jmp_buf setjmp_buffer;
36	};	51	};
37		52
38	static void	53	static void
39	cv_error_exit (j_common_ptr cinfo)	54	cv_error_exit (j_common_ptr cinfo)
40	{	55	{
		56	cinfo->err->output_message (cinfo);
41	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	57	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
42	}	58	}
43		59
44	static void	60	static void
45	cv_error_output (j_common_ptr cinfo)	61	cv_error_output (j_common_ptr cinfo)
46	{	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);
47	return;	68	return;
48	}	69	}
49		70
50	static void	71	static void
51	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,
…		…
148	if (!--a85_cnt)	169	if (!--a85_cnt)
149	{	170	{
150	a85_cnt = 4;	171	a85_cnt = 4;
151	if (a85_val)	172	if (a85_val)
152	{	173	{
153	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
154	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	175	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
155	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	176	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
156	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	177	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
157	a85_ptr[0] = (a85_val ) + 33;	178	a85_ptr[0] = (a85_val ) + 33;
158		179
159	a85_ptr += 5;	180	a85_ptr += 5;
160	}	181	}
…		…
183		204
184	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	205	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
185	}	206	}
186		207
187	/////////////////////////////////////////////////////////////////////////////	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	/////////////////////////////////////////////////////////////////////////////
188		303
189	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	304	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
190		305
191	PROTOTYPES: ENABLE	306	PROTOTYPES: ENABLE
192		307
		308	# calculate the common prefix length of two strings
193	# missing function in perl. really :)	309	# missing function in perl. really :)
194	int	310	int
195	common_prefix_length (a, b)	311	common_prefix_length (a, b)
196	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);	312	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
197	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);	313	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
…		…
206		322
207	OUTPUT:	323	OUTPUT:
208	RETVAL	324	RETVAL
209		325
210	const char *	326	const char *
211	magic (octet_string 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
212	CODE:	333	CODE:
213	{	334	{
214	static magic_t cookie;	335	STRLEN len;
		336	char *data = SvPVbyte (path_or_data, len);
215		337
216	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);
217	{	344	}
218	cookie = magic_open (MAGIC_NONE);
219		345
220	if (cookie)	346	perlinterp_release ();
221	magic_load (cookie, 0);
222	else
223	XSRETURN_UNDEF;
224	}
225		347
226	RETVAL = magic_file (cookie, path);
227	}
228	OUTPUT:
229	RETVAL	348	RETVAL = ix & 2
		349	? magic_buffer (magic_cookie[ix & 1], data, len)
		350	: magic_file (magic_cookie[ix & 1], data);
230		351
231	const char *	352	perlinterp_acquire ();
232	magic_mime (octet_string path)
233	CODE:
234	{
235	static magic_t cookie;
236
237	if (!cookie)
238	{
239	cookie = magic_open (MAGIC_MIME);
240
241	if (cookie)
242	magic_load (cookie, 0);
243	else
244	XSRETURN_UNDEF;
245	}
246
247	RETVAL = magic_file (cookie, path);
248	}	353	}
249	OUTPUT:	354	OUTPUT:
250	RETVAL	355	RETVAL
251		356
252	# missing/broken in Gtk2 perl module	357	# missing/broken in Gtk2 perl module
…		…
268	RETVAL	373	RETVAL
269		374
270	GdkPixbuf_noinc *	375	GdkPixbuf_noinc *
271	dealpha_expose (GdkPixbuf *pb)	376	dealpha_expose (GdkPixbuf *pb)
272	CODE:	377	CODE:
		378	perlinterp_release ();
273	{	379	{
274	int w = gdk_pixbuf_get_width (pb);	380	int w = gdk_pixbuf_get_width (pb);
275	int h = gdk_pixbuf_get_height (pb);	381	int h = gdk_pixbuf_get_height (pb);
276	int bpp = gdk_pixbuf_get_n_channels (pb);	382	int bpp = gdk_pixbuf_get_n_channels (pb);
277	int x, y, i;	383	int x, y, i;
…		…
286	for (x = 0; x < w; x++)	392	for (x = 0; x < w; x++)
287	for (y = 0; y < h; y++)	393	for (y = 0; y < h; y++)
288	for (i = 0; i < 3; i++)	394	for (i = 0; i < 3; i++)
289	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];
290	}	396	}
		397	perlinterp_acquire ();
291	OUTPUT:	398	OUTPUT:
292	RETVAL	399	RETVAL
293		400
294	GdkPixbuf_noinc *	401	GdkPixbuf_noinc *
295	rotate (GdkPixbuf *pb, int angle)	402	rotate (GdkPixbuf *pb, int angle)
296	CODE:	403	CODE:
		404	perlinterp_release ();
		405	if (angle < 0)
		406	angle += 360;
297	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
298	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE	408	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
299	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN	409	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
300	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE	410	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
301	: angle);	411	: angle);
		412	perlinterp_acquire ();
302	OUTPUT:	413	OUTPUT:
303	RETVAL	414	RETVAL
304		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
305	GdkPixbuf_noinc *	491	GdkPixbuf_noinc *
306	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)
307	CODE:	694	CODE:
308	{	695	{
309	struct jpeg_decompress_struct cinfo;	696	struct jpeg_decompress_struct cinfo;
310	struct jpg_err_mgr jerr;	697	struct jpg_err_mgr jerr;
311	guchar *data;
312	int rs;	698	int rs;
313	FILE *fp;
314	volatile GdkPixbuf *pb = 0;	699	volatile GdkPixbuf *pb = 0;
		700	STRLEN data_len;
		701	guchar *data = SvPVbyte (image_data, data_len);
315		702
316	RETVAL = 0;	703	RETVAL = 0;
317		704
318	fp = fopen (SvPVbyte_nolen (path), "rb");	705	perlinterp_release ();
319
320	if (!fp)
321	XSRETURN_UNDEF;
322		706
323	cinfo.err = jpeg_std_error (&jerr.err);	707	cinfo.err = jpeg_std_error (&jerr.err);
324		708
325	jerr.err.error_exit = cv_error_exit;	709	jerr.err.error_exit = cv_error_exit;
326	jerr.err.output_message = cv_error_output;	710	jerr.err.output_message = cv_error_output;
327		711
328	if ((rs = setjmp (jerr.setjmp_buffer)))	712	if ((rs = setjmp (jerr.setjmp_buffer)))
329	{	713	{
330	fclose (fp);
331	jpeg_destroy_decompress (&cinfo);	714	jpeg_destroy_decompress (&cinfo);
332		715
333	if (pb)	716	if (pb)
334	g_object_unref ((gpointer)pb);	717	g_object_unref ((gpointer)pb);
335		718
		719	perlinterp_acquire ();
336	XSRETURN_UNDEF;	720	XSRETURN_UNDEF;
337	}	721	}
338		722
		723	if (!data_len)
		724	longjmp (jerr.setjmp_buffer, 4);
		725
339	jpeg_create_decompress (&cinfo);	726	jpeg_create_decompress (&cinfo);
		727	cv_jpeg_mem_src (&cinfo, data, data_len);
340		728
341	jpeg_stdio_src (&cinfo, fp);
342	jpeg_read_header (&cinfo, TRUE);	729	jpeg_read_header (&cinfo, TRUE);
343		730
344	cinfo.dct_method = JDCT_DEFAULT;	731	cinfo.dct_method = JDCT_DEFAULT;
345	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 */
346	cinfo.do_block_smoothing = FALSE;	733	cinfo.do_block_smoothing = FALSE;
…		…
356	{	743	{
357	cinfo.dct_method = JDCT_FASTEST;	744	cinfo.dct_method = JDCT_FASTEST;
358	cinfo.do_fancy_upsampling = FALSE;	745	cinfo.do_fancy_upsampling = FALSE;
359		746
360	while (cinfo.scale_denom < 8	747	while (cinfo.scale_denom < 8
361	&& cinfo.output_width >= IW*4	748	&& cinfo.output_width >= iw*4
362	&& cinfo.output_height >= IH*4)	749	&& cinfo.output_height >= ih*4)
363	{	750	{
364	cinfo.scale_denom <<= 1;	751	cinfo.scale_denom <<= 1;
365	jpeg_calc_output_dimensions (&cinfo);	752	jpeg_calc_output_dimensions (&cinfo);
366	}	753	}
367	}	754	}
368		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
369	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);
370	if (!RETVAL)	766	if (!RETVAL)
371	longjmp (jerr.setjmp_buffer, 2);	767	longjmp (jerr.setjmp_buffer, 2);
372		768
373	data = gdk_pixbuf_get_pixels (RETVAL);	769	data = gdk_pixbuf_get_pixels (RETVAL);
374	rs = gdk_pixbuf_get_rowstride (RETVAL);	770	rs = gdk_pixbuf_get_rowstride (RETVAL);
375
376	if (cinfo.output_components != 3)
377	longjmp (jerr.setjmp_buffer, 3);
378		771
379	jpeg_start_decompress (&cinfo);	772	jpeg_start_decompress (&cinfo);
380		773
381	while (cinfo.output_scanline < cinfo.output_height)	774	while (cinfo.output_scanline < cinfo.output_height)
382	{	775	{
…		…
389	rp [3] = (guchar *)rp [2] + rs;	782	rp [3] = (guchar *)rp [2] + rs;
390		783
391	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	784	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
392	}	785	}
393		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
394	jpeg_finish_decompress (&cinfo);	816	jpeg_finish_decompress (&cinfo);
395	fclose (fp);
396	jpeg_destroy_decompress (&cinfo);	817	jpeg_destroy_decompress (&cinfo);
		818	perlinterp_acquire ();
397	}	819	}
398	OUTPUT:	820	OUTPUT:
399	RETVAL	821	RETVAL
400		822
401	void	823	void
402	compare (GdkPixbuf a, GdkPixbuf b)	824	compare (GdkPixbuf a, GdkPixbuf b)
403	PPCODE:	825	PPCODE:
		826	perlinterp_release ();
404	{	827	{
405	int w = gdk_pixbuf_get_width (a);	828	int w = gdk_pixbuf_get_width (a);
406	int h = gdk_pixbuf_get_height (a);	829	int h = gdk_pixbuf_get_height (a);
407		830
408	int sa = gdk_pixbuf_get_rowstride (a);	831	int sa = gdk_pixbuf_get_rowstride (a);
…		…
436	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));
437	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));
438	}	861	}
439	}	862	}
440		863
		864	perlinterp_acquire ();
		865
441	EXTEND (SP, 2);	866	EXTEND (SP, 2);
442	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));	867	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
443	PUSHs (sv_2mortal (newSVnv (peak / 255.)));	868	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
444	}	869	}
445		870
…		…
455	CODE:	880	CODE:
456	{	881	{
457	STRLEN plen;	882	STRLEN plen;
458	U8 path = (U8 )SvPV (pathsv, plen);	883	U8 path = (U8 )SvPV (pathsv, plen);
459	U8 *pend = path + plen;	884	U8 *pend = path + plen;
460	U8 dst [plen * 6 * 3], *dstp = dst;	885	U8 dst [plen * 8 * 3], *dstp = dst;
461		886
462	while (path < pend)	887	while (path < pend)
463	{	888	{
464	U8 ch = *path;	889	U8 ch = *path;
465		890
…		…
467	dstp++ = path++;	892	dstp++ = path++;
468	else if (ch >= 'A' && ch <= 'Z')	893	else if (ch >= 'A' && ch <= 'Z')
469	dstp++ = path++ + ('a' - 'A');	894	dstp++ = path++ + ('a' - 'A');
470	else if (ch >= '0' && ch <= '9')	895	else if (ch >= '0' && ch <= '9')
471	{	896	{
		897	/* version sort, up to 8 digits */
472	STRLEN el, nl = 0;	898	STRLEN el, nl = 0;
473	while (path >= '0' && path <= '9' && path < pend)	899	while (path >= '0' && path <= '9' && path < pend)
474	path++, nl++;	900	path++, nl++;
475		901
476	for (el = nl; el < 6; el++)	902	for (el = nl; el < 8; el++)
477	*dstp++ = '0';	903	*dstp++ = '0';
478		904
479	memcpy (dstp, path - nl, nl);	905	memcpy (dstp, path - nl, nl);
480	dstp += nl;	906	dstp += nl;
481	}	907	}

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Comparing CV/CV.xs (file contents): Revision 1.43 by root, Sun May 3 08:16:47 2009 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 1.43 by root, Sun May 3 08:16:47 2009 UTC vs.
Revision 1.61 by root, Sun Jul 25 11:24:48 2021 UTC