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

Comparing CV/CV.xs (file contents):
Revision 1.42 by root, Sun Sep 14 12:47:59 2008 UTC vs.
Revision 1.57 by root, Mon Jul 30 22:55:46 2018 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	#include "perlmulticore.h"
		30
19	#define IW 80 /* MUST match Schnauzer.pm! */	31	#define IW 80 /* MUST match Schnauzer.pm! */
20	#define IH 60 /* MUST match Schnauzer.pm! */	32	#define IH 60 /* MUST match Schnauzer.pm! */
21		33
22	#define RAND (seed = (seed + 7141) * 54773 % 134456)	34	#define RAND (seed = (seed + 7141) * 54773 % 134456)
23		35
24	#define LINELENGTH 240	36	#define LINELENGTH 240
25		37
26	#define ELLIPSIS "\xe2\x80\xa6"	38	#define ELLIPSIS "\xe2\x80\xa6"
27		39
28	typedef char *octet_string;	40	typedef char *octet_string;
		41
		42	static magic_t magic_cookie[2]; /* !mime, mime */
29		43
30	struct jpg_err_mgr	44	struct jpg_err_mgr
31	{	45	{
32	struct jpeg_error_mgr err;	46	struct jpeg_error_mgr err;
33	jmp_buf setjmp_buffer;	47	jmp_buf setjmp_buffer;
34	};	48	};
35		49
36	static void	50	static void
37	cv_error_exit (j_common_ptr cinfo)	51	cv_error_exit (j_common_ptr cinfo)
38	{	52	{
		53	cinfo->err->output_message (cinfo);
39	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);	54	longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
40	}	55	}
41		56
42	static void	57	static void
43	cv_error_output (j_common_ptr cinfo)	58	cv_error_output (j_common_ptr cinfo)
44	{	59	{
		60	char msg[JMSG_LENGTH_MAX];
		61
		62	cinfo->err->format_message (cinfo, msg);
		63
		64	fprintf (stderr, "JPEG decoding error: %s\n", msg);
45	return;	65	return;
46	}	66	}
47		67
48	static void	68	static void
49	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,	69	rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
…		…
146	if (!--a85_cnt)	166	if (!--a85_cnt)
147	{	167	{
148	a85_cnt = 4;	168	a85_cnt = 4;
149	if (a85_val)	169	if (a85_val)
150	{	170	{
151	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;	171	a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85;
152	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;	172	a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85;
153	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;	173	a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85;
154	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;	174	a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85;
155	a85_ptr[0] = (a85_val ) + 33;	175	a85_ptr[0] = (a85_val ) + 33;
156		176
157	a85_ptr += 5;	177	a85_ptr += 5;
158	}	178	}
…		…
181		201
182	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);	202	PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
183	}	203	}
184		204
185	/////////////////////////////////////////////////////////////////////////////	205	/////////////////////////////////////////////////////////////////////////////
		206	// memory source for libjpeg
		207
		208	static void cv_ms_init (j_decompress_ptr cinfo)
		209	{
		210	}
		211
		212	static void cv_ms_term (j_decompress_ptr cinfo)
		213	{
		214	}
		215
		216	static boolean cv_ms_fill (j_decompress_ptr cinfo)
		217	{
		218	// unexpected EOF, warn and generate fake EOI marker
		219
		220	WARNMS (cinfo, JWRN_JPEG_EOF);
		221
		222	struct jpeg_source_mgr src = (struct jpeg_source_mgr )cinfo->src;
		223
		224	static const JOCTET eoi[] = { 0xFF, JPEG_EOI };
		225
		226	src->next_input_byte = eoi;
		227	src->bytes_in_buffer = sizeof (eoi);
		228
		229	return TRUE;
		230	}
		231
		232	static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes)
		233	{
		234	struct jpeg_source_mgr src = (struct jpeg_source_mgr )cinfo->src;
		235
		236	src->next_input_byte += num_bytes;
		237	src->bytes_in_buffer -= num_bytes;
		238	}
		239
		240	static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen)
		241	{
		242	struct jpeg_source_mgr *src;
		243
		244	if (!cinfo->src)
		245	cinfo->src = (struct jpeg_source_mgr *)
		246	(*cinfo->mem->alloc_small) (
		247	(j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr)
		248	);
		249
		250	src = (struct jpeg_source_mgr *)cinfo->src;
		251	src->init_source = cv_ms_init;
		252	src->fill_input_buffer = cv_ms_fill;
		253	src->skip_input_data = cv_ms_skip;
		254	src->resync_to_restart = jpeg_resync_to_restart;
		255	src->term_source = cv_ms_term;
		256	src->next_input_byte = (JOCTET *)buf;
		257	src->bytes_in_buffer = buflen;
		258	}
		259
		260	/////////////////////////////////////////////////////////////////////////////
186		261
187	MODULE = Gtk2::CV PACKAGE = Gtk2::CV	262	MODULE = Gtk2::CV PACKAGE = Gtk2::CV
188		263
189	PROTOTYPES: ENABLE	264	PROTOTYPES: ENABLE
190		265
		266	# calculate the common prefix length of two strings
191	# missing function in perl. really :)	267	# missing function in perl. really :)
192	int	268	int
193	common_prefix_length (a, b)	269	common_prefix_length (a, b)
194	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);	270	unsigned char a = (unsigned char )SvPVutf8_nolen ($arg);
195	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);	271	unsigned char b = (unsigned char )SvPVutf8_nolen ($arg);
…		…
204		280
205	OUTPUT:	281	OUTPUT:
206	RETVAL	282	RETVAL
207		283
208	const char *	284	const char *
209	magic (octet_string path)	285	magic (SV *path_or_data)
		286	ALIAS:
		287	magic = 0
		288	magic_mime = 1
		289	magic_buffer = 2
		290	magic_buffer_mime = 3
210	CODE:	291	CODE:
211	{	292	{
212	static magic_t cookie;	293	STRLEN len;
		294	char *data = SvPVbyte (path_or_data, len);
213		295
214	if (!cookie)	296	if (!magic_cookie[0])
		297	{
		298	magic_cookie[0] = magic_open (MAGIC_SYMLINK);
		299	magic_cookie[1] = magic_open (MAGIC_SYMLINK \| MAGIC_MIME_TYPE);
		300	magic_load (magic_cookie[0], 0);
		301	magic_load (magic_cookie[1], 0);
215	{	302	}
216	cookie = magic_open (MAGIC_NONE);
217		303
218	if (cookie)	304	perlinterp_release ();
219	magic_load (cookie, 0);
220	else
221	XSRETURN_UNDEF;
222	}
223		305
224	RETVAL = magic_file (cookie, path);
225	}
226	OUTPUT:
227	RETVAL	306	RETVAL = ix & 2
		307	? magic_buffer (magic_cookie[ix & 1], data, len)
		308	: magic_file (magic_cookie[ix & 1], data);
228		309
229	const char *	310	perlinterp_acquire ();
230	magic_mime (octet_string path)
231	CODE:
232	{
233	static magic_t cookie;
234
235	if (!cookie)
236	{
237	cookie = magic_open (MAGIC_MIME);
238
239	if (cookie)
240	magic_load (cookie, 0);
241	else
242	XSRETURN_UNDEF;
243	}
244
245	RETVAL = magic_file (cookie, path);
246	}	311	}
247	OUTPUT:	312	OUTPUT:
248	RETVAL	313	RETVAL
249		314
250	# missing/broken in Gtk2 perl module	315	# missing/broken in Gtk2 perl module
…		…
266	RETVAL	331	RETVAL
267		332
268	GdkPixbuf_noinc *	333	GdkPixbuf_noinc *
269	dealpha_expose (GdkPixbuf *pb)	334	dealpha_expose (GdkPixbuf *pb)
270	CODE:	335	CODE:
		336	perlinterp_release ();
271	{	337	{
272	int w = gdk_pixbuf_get_width (pb);	338	int w = gdk_pixbuf_get_width (pb);
273	int h = gdk_pixbuf_get_height (pb);	339	int h = gdk_pixbuf_get_height (pb);
274	int bpp = gdk_pixbuf_get_n_channels (pb);	340	int bpp = gdk_pixbuf_get_n_channels (pb);
275	int x, y, i;	341	int x, y, i;
…		…
284	for (x = 0; x < w; x++)	350	for (x = 0; x < w; x++)
285	for (y = 0; y < h; y++)	351	for (y = 0; y < h; y++)
286	for (i = 0; i < 3; i++)	352	for (i = 0; i < 3; i++)
287	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];	353	dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
288	}	354	}
		355	perlinterp_acquire ();
289	OUTPUT:	356	OUTPUT:
290	RETVAL	357	RETVAL
291		358
292	GdkPixbuf_noinc *	359	GdkPixbuf_noinc *
293	rotate (GdkPixbuf *pb, int angle)	360	rotate (GdkPixbuf *pb, int angle)
294	CODE:	361	CODE:
		362	perlinterp_release ();
		363	if (angle < 0)
		364	angle += 360;
295	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE	365	RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
296	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE	366	: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
297	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN	367	: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
298	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE	368	: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
299	: angle);	369	: angle);
		370	perlinterp_acquire ();
300	OUTPUT:	371	OUTPUT:
301	RETVAL	372	RETVAL
302		373
		374	const char *
		375	filetype (SV *image_data)
		376	CODE:
		377	{
		378	STRLEN data_len;
		379	U8 *data = SvPVbyte (image_data, data_len);
		380
		381	if (data_len >= 20
		382	&& data[0] == 0xff
		383	&& data[1] == 0xd8
		384	&& data[2] == 0xff)
		385	RETVAL = "jpg";
		386	else if (data_len >= 12
		387	&& data[ 0] == (U8)'R'
		388	&& data[ 1] == (U8)'I'
		389	&& data[ 2] == (U8)'F'
		390	&& data[ 3] == (U8)'F'
		391	&& data[ 8] == (U8)'W'
		392	&& data[ 9] == (U8)'E'
		393	&& data[10] == (U8)'B'
		394	&& data[11] == (U8)'P')
		395	RETVAL = "webp";
		396	else if (data_len >= 16
		397	&& data[ 0] == 0x89
		398	&& data[ 1] == (U8)'P'
		399	&& data[ 2] == (U8)'N'
		400	&& data[ 3] == (U8)'G'
		401	&& data[ 4] == 0x0d
		402	&& data[ 5] == 0x0a
		403	&& data[ 6] == 0x1a
		404	&& data[ 7] == 0x0a)
		405	RETVAL = "png";
		406	else
		407	RETVAL = "other";
		408	}
		409	OUTPUT:
		410	RETVAL
		411
303	GdkPixbuf_noinc *	412	GdkPixbuf_noinc *
304	load_jpeg (SV *path, int thumbnail=0)	413	decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
		414	CODE:
		415	{
		416	#if WEBP
		417	STRLEN data_size;
		418	int alpha;
		419	WebPData data;
		420	WebPDemuxer *demux;
		421	WebPIterator iter;
		422	WebPDecoderConfig config;
		423	int inw, inh;
		424
		425	data.bytes = (uint8_t *)SvPVbyte (image_data, data_size);
		426	data.size = data_size;
		427
		428	perlinterp_release ();
		429
		430	RETVAL = 0;
		431
		432	if (!(demux = WebPDemux (&data)))
		433	goto err_demux;
		434
		435	if (!WebPDemuxGetFrame (demux, 1, &iter))
		436	goto err_iter;
		437
		438	if (!WebPInitDecoderConfig (&config))
		439	goto err_iter;
		440
		441	config.options.use_threads = 1;
		442
		443	if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK)
		444	goto err_iter;
		445
		446	inw = config.input.width;
		447	inh = config.input.height;
		448
		449	if (thumbnail)
		450	{
		451	if (inw * ih > inh * iw)
		452	ih = (iw * inh + inw - 1) / inw;
		453	else
		454	iw = (ih * inw + inh - 1) / inh;
		455
		456	config.options.bypass_filtering = 1;
		457	config.options.no_fancy_upsampling = 1;
		458
		459	config.options.use_scaling = 1;
		460	config.options.scaled_width = iw;
		461	config.options.scaled_height = ih;
		462	}
		463	else
		464	{
		465	iw = inw;
		466	ih = inh;
		467	}
		468
		469	alpha = !!config.input.has_alpha;
		470
		471	RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih);
		472	if (!RETVAL)
		473	goto err_iter;
		474
		475	config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB;
		476	config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL);
		477	config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL);
		478	config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL);
		479	config.output.is_external_memory = 1;
		480
		481	if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK)
		482	{
		483	g_object_unref (RETVAL);
		484	RETVAL = 0;
		485	goto err_iter;
		486	}
		487
		488	err_iter:
		489	WebPDemuxReleaseIterator (&iter);
		490	err_demux:
		491	WebPDemuxDelete (demux);
		492
		493	perlinterp_acquire ();
		494	#else
		495	croak ("load_webp: webp not enabled at compile time");
		496	#endif
		497	}
		498	OUTPUT:
		499	RETVAL
		500
		501	GdkPixbuf_noinc *
		502	decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0)
305	CODE:	503	CODE:
306	{	504	{
307	struct jpeg_decompress_struct cinfo;	505	struct jpeg_decompress_struct cinfo;
308	struct jpg_err_mgr jerr;	506	struct jpg_err_mgr jerr;
309	guchar *data;
310	int rs;	507	int rs;
311	FILE *fp;
312	volatile GdkPixbuf *pb = 0;	508	volatile GdkPixbuf *pb = 0;
		509	STRLEN data_len;
		510	guchar *data = SvPVbyte (image_data, data_len);
313		511
314	RETVAL = 0;	512	RETVAL = 0;
315		513
316	fp = fopen (SvPVbyte_nolen (path), "rb");	514	perlinterp_release ();
317
318	if (!fp)
319	XSRETURN_UNDEF;
320		515
321	cinfo.err = jpeg_std_error (&jerr.err);	516	cinfo.err = jpeg_std_error (&jerr.err);
322		517
323	jerr.err.error_exit = cv_error_exit;	518	jerr.err.error_exit = cv_error_exit;
324	jerr.err.output_message = cv_error_output;	519	jerr.err.output_message = cv_error_output;
325		520
326	if ((rs = setjmp (jerr.setjmp_buffer)))	521	if ((rs = setjmp (jerr.setjmp_buffer)))
327	{	522	{
328	fclose (fp);
329	jpeg_destroy_decompress (&cinfo);	523	jpeg_destroy_decompress (&cinfo);
330		524
331	if (pb)	525	if (pb)
332	g_object_unref ((gpointer)pb);	526	g_object_unref ((gpointer)pb);
333		527
		528	perlinterp_acquire ();
334	XSRETURN_UNDEF;	529	XSRETURN_UNDEF;
335	}	530	}
336		531
		532	if (!data_len)
		533	longjmp (jerr.setjmp_buffer, 4);
		534
337	jpeg_create_decompress (&cinfo);	535	jpeg_create_decompress (&cinfo);
		536	cv_jpeg_mem_src (&cinfo, data, data_len);
338		537
339	jpeg_stdio_src (&cinfo, fp);
340	jpeg_read_header (&cinfo, TRUE);	538	jpeg_read_header (&cinfo, TRUE);
341		539
342	cinfo.dct_method = JDCT_DEFAULT;	540	cinfo.dct_method = JDCT_DEFAULT;
343	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */	541	cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
344	cinfo.do_block_smoothing = FALSE;	542	cinfo.do_block_smoothing = FALSE;
…		…
354	{	552	{
355	cinfo.dct_method = JDCT_FASTEST;	553	cinfo.dct_method = JDCT_FASTEST;
356	cinfo.do_fancy_upsampling = FALSE;	554	cinfo.do_fancy_upsampling = FALSE;
357		555
358	while (cinfo.scale_denom < 8	556	while (cinfo.scale_denom < 8
359	&& cinfo.output_width >= IW*4	557	&& cinfo.output_width >= iw*4
360	&& cinfo.output_height >= IH*4)	558	&& cinfo.output_height >= ih*4)
361	{	559	{
362	cinfo.scale_denom <<= 1;	560	cinfo.scale_denom <<= 1;
363	jpeg_calc_output_dimensions (&cinfo);	561	jpeg_calc_output_dimensions (&cinfo);
364	}	562	}
365	}	563	}
366		564
		565	if (cinfo.output_components != 3)
		566	longjmp (jerr.setjmp_buffer, 3);
		567
		568	if (cinfo.jpeg_color_space == JCS_YCCK \|\| cinfo.jpeg_color_space == JCS_CMYK)
		569	{
		570	cinfo.out_color_space = JCS_CMYK;
		571	cinfo.output_components = 4;
		572	}
		573
367	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);	574	pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height);
368	if (!RETVAL)	575	if (!RETVAL)
369	longjmp (jerr.setjmp_buffer, 2);	576	longjmp (jerr.setjmp_buffer, 2);
370		577
371	data = gdk_pixbuf_get_pixels (RETVAL);	578	data = gdk_pixbuf_get_pixels (RETVAL);
372	rs = gdk_pixbuf_get_rowstride (RETVAL);	579	rs = gdk_pixbuf_get_rowstride (RETVAL);
373
374	if (cinfo.output_components != 3)
375	longjmp (jerr.setjmp_buffer, 3);
376		580
377	jpeg_start_decompress (&cinfo);	581	jpeg_start_decompress (&cinfo);
378		582
379	while (cinfo.output_scanline < cinfo.output_height)	583	while (cinfo.output_scanline < cinfo.output_height)
380	{	584	{
…		…
387	rp [3] = (guchar *)rp [2] + rs;	591	rp [3] = (guchar *)rp [2] + rs;
388		592
389	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);	593	jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
390	}	594	}
391		595
		596	if (cinfo.out_color_space == JCS_CMYK)
		597	{
		598	guchar end = data + cinfo.output_height rs;
		599
		600	while (data < end)
		601	{
		602	U32 c = data [0];
		603	U32 m = data [1];
		604	U32 y = data [2];
		605	U32 k = data [3];
		606
		607	if (0)
		608	if (cinfo.Adobe_transform == 2)
		609	{
		610	c ^= 0xff;
		611	m ^= 0xff;
		612	y ^= 0xff;
		613	k ^= 0xff;
		614	}
		615
		616	data [0] = (c * k + 0x80) / 0xff;
		617	data [1] = (m * k + 0x80) / 0xff;
		618	data [2] = (y * k + 0x80) / 0xff;
		619	data [3] = 0xff;
		620
		621	data += 4;
		622	}
		623	}
		624
392	jpeg_finish_decompress (&cinfo);	625	jpeg_finish_decompress (&cinfo);
393	fclose (fp);
394	jpeg_destroy_decompress (&cinfo);	626	jpeg_destroy_decompress (&cinfo);
		627	perlinterp_acquire ();
395	}	628	}
396	OUTPUT:	629	OUTPUT:
397	RETVAL	630	RETVAL
398		631
399	void	632	void
400	compare (GdkPixbuf a, GdkPixbuf b)	633	compare (GdkPixbuf a, GdkPixbuf b)
401	PPCODE:	634	PPCODE:
		635	perlinterp_release ();
402	{	636	{
403	int w = gdk_pixbuf_get_width (a);	637	int w = gdk_pixbuf_get_width (a);
404	int h = gdk_pixbuf_get_height (a);	638	int h = gdk_pixbuf_get_height (a);
		639
405	int sa = gdk_pixbuf_get_rowstride (a);	640	int sa = gdk_pixbuf_get_rowstride (a);
406	int sb = gdk_pixbuf_get_rowstride (b);	641	int sb = gdk_pixbuf_get_rowstride (b);
407		642
408	guchar *pa = gdk_pixbuf_get_pixels (a);	643	guchar *pa = gdk_pixbuf_get_pixels (a);
409	guchar *pb = gdk_pixbuf_get_pixels (b);	644	guchar *pb = gdk_pixbuf_get_pixels (b);
…		…
432	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	667	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
433	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	668	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
434	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));	669	d = ((int)pa_++) - ((int)pb_++); diff += d*d; peak = MAX (peak, abs (d));
435	}	670	}
436	}	671	}
		672
		673	perlinterp_acquire ();
437		674
438	EXTEND (SP, 2);	675	EXTEND (SP, 2);
439	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));	676	PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.)))));
440	PUSHs (sv_2mortal (newSVnv (peak / 255.)));	677	PUSHs (sv_2mortal (newSVnv (peak / 255.)));
441	}	678	}

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Comparing CV/CV.xs (file contents): Revision 1.42 by root, Sun Sep 14 12:47:59 2008 UTC vs. Revision 1.57 by root, Mon Jul 30 22:55:46 2018 UTC

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Comparing CV/CV.xs (file contents):
Revision 1.42 by root, Sun Sep 14 12:47:59 2008 UTC vs.
Revision 1.57 by root, Mon Jul 30 22:55:46 2018 UTC