diff --git a/jni/libsndfile-1.0.25/tests/benchmark.c b/jni/libsndfile-1.0.25/tests/benchmark.c
new file mode 100644
index 0000000..f33bfee
--- /dev/null
+++ b/jni/libsndfile-1.0.25/tests/benchmark.c
@@ -0,0 +1,545 @@
+/*
+** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include "sfconfig.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#if (HAVE_DECL_S_IRGRP == 0)
+#include <sf_unistd.h>
+#endif
+
+#include <string.h>
+#include <math.h>
+#include <time.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#include <sndfile.h>
+
+#ifndef		M_PI
+#define		M_PI		3.14159265358979323846264338
+#endif
+
+/*
+**	Neat solution to the Win32/OS2 binary file flage requirement.
+**	If O_BINARY isn't already defined by the inclusion of the system
+**	headers, set it to zero.
+*/
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#define	WRITE_FLAGS	(O_WRONLY | O_CREAT | O_TRUNC | O_BINARY)
+#define	READ_FLAGS	(O_RDONLY | O_BINARY)
+
+#if (defined (WIN32) || defined (_WIN32) || defined (__OS2__))
+	#define WRITE_PERMS	0777
+#else
+	#define WRITE_PERMS	(S_IRUSR | S_IWUSR | S_IRGRP)
+#endif
+
+#define	BUFFER_SIZE		(1<<18)
+#define	BLOCK_COUNT		(30)
+#define	TEST_DURATION	(5)		/* 5 Seconds. */
+
+typedef struct
+{	double	write_rate ;
+	double	read_rate ;
+} PERF_STATS ;
+
+static void	*data = NULL ;
+
+static void calc_raw_performance (PERF_STATS *stats) ;
+
+static void	calc_short_performance (int format, double read_rate, double write_rate) ;
+static void	calc_int_performance (int format, double read_rate, double write_rate) ;
+static void	calc_float_performance (int format, double read_rate, double write_rate) ;
+
+
+static int cpu_is_big_endian (void) ;
+
+static const char* get_subtype_str (int subtype) ;
+
+int
+main (int argc, char *argv [])
+{	PERF_STATS	stats ;
+	char		buffer [256] = "Benchmarking " ;
+	int			format_major ;
+
+	if (! (data = malloc (BUFFER_SIZE * sizeof (double))))
+	{	perror ("Error : malloc failed") ;
+		exit (1) ;
+		} ;
+
+	sf_command (NULL, SFC_GET_LIB_VERSION, buffer + strlen (buffer), sizeof (buffer) - strlen (buffer)) ;
+
+	puts (buffer) ;
+	memset (buffer, '-', strlen (buffer)) ;
+	puts (buffer) ;
+	printf ("Each test takes a little over %d seconds.\n\n", TEST_DURATION) ;
+
+	calc_raw_performance (&stats) ;
+
+	if (argc < 2 || strcmp ("--native-only", argv [1]) == 0)
+	{	puts ("\nNative endian I/O :") ;
+		format_major = cpu_is_big_endian () ? SF_FORMAT_AIFF : SF_FORMAT_WAV ;
+
+		calc_short_performance	(format_major | SF_FORMAT_PCM_16, stats.read_rate, stats.write_rate) ;
+		calc_int_performance	(format_major | SF_FORMAT_PCM_24, stats.read_rate, stats.write_rate) ;
+		calc_int_performance	(format_major | SF_FORMAT_PCM_32, stats.read_rate, stats.write_rate) ;
+		calc_float_performance	(format_major | SF_FORMAT_PCM_16, stats.read_rate, stats.write_rate) ;
+		calc_float_performance	(format_major | SF_FORMAT_PCM_24, stats.read_rate, stats.write_rate) ;
+		calc_float_performance	(format_major | SF_FORMAT_PCM_32, stats.read_rate, stats.write_rate) ;
+		calc_float_performance	(format_major | SF_FORMAT_FLOAT , stats.read_rate, stats.write_rate) ;
+		} ;
+
+	if (argc < 2 || strcmp ("--swap-only", argv [1]) == 0)
+	{	puts ("\nEndian swapped I/O :") ;
+		format_major = cpu_is_big_endian () ? SF_FORMAT_WAV : SF_FORMAT_AIFF ;
+
+		calc_short_performance	(format_major | SF_FORMAT_PCM_16, stats.read_rate, stats.write_rate) ;
+		calc_int_performance	(format_major | SF_FORMAT_PCM_24, stats.read_rate, stats.write_rate) ;
+		calc_int_performance	(format_major | SF_FORMAT_PCM_32, stats.read_rate, stats.write_rate) ;
+		calc_float_performance	(format_major | SF_FORMAT_PCM_16, stats.read_rate, stats.write_rate) ;
+		calc_float_performance	(format_major | SF_FORMAT_PCM_24, stats.read_rate, stats.write_rate) ;
+		calc_float_performance	(format_major | SF_FORMAT_PCM_32, stats.read_rate, stats.write_rate) ;
+		calc_float_performance	(format_major | SF_FORMAT_FLOAT , stats.read_rate, stats.write_rate) ;
+		} ;
+
+	puts ("") ;
+
+	free (data) ;
+
+	return 0 ;
+} /* main */
+
+/*==============================================================================
+*/
+
+static void
+calc_raw_performance (PERF_STATS *stats)
+{	clock_t start_clock, clock_time ;
+	int fd, k, byte_count, retval, op_count ;
+	const char *filename ;
+
+	filename = "benchmark.dat" ;
+
+	byte_count = BUFFER_SIZE * sizeof (short) ;
+
+	/* Collect write stats */
+	printf ("    Raw write PCM_16  : ") ;
+	fflush (stdout) ;
+
+	clock_time = 0 ;
+	op_count = 0 ;
+	start_clock = clock () ;
+
+	while (clock_time < (CLOCKS_PER_SEC * TEST_DURATION))
+	{	if ((fd = open (filename, WRITE_FLAGS, WRITE_PERMS)) < 0)
+		{	printf ("Error : not able to open file : %s\n", filename) ;
+			perror ("") ;
+			exit (1) ;
+			} ;
+
+		for (k = 0 ; k < BLOCK_COUNT ; k++)
+		{	if ((retval = write (fd, data, byte_count)) != byte_count)
+			{	printf ("Error : write returned %d (should have been %d)\n", retval, byte_count) ;
+				exit (1) ;
+				} ;
+			} ;
+
+		close (fd) ;
+
+		clock_time = clock () - start_clock ;
+		op_count ++ ;
+		} ;
+
+	stats->write_rate = (1.0 * BUFFER_SIZE) * BLOCK_COUNT * op_count ;
+	stats->write_rate *= (1.0 * CLOCKS_PER_SEC) / clock_time ;
+	printf ("%10.0f samples per sec\n", stats->write_rate) ;
+
+	/* Collect read stats */
+	printf ("    Raw read  PCM_16  : ") ;
+	fflush (stdout) ;
+
+	clock_time = 0 ;
+	op_count = 0 ;
+	start_clock = clock () ;
+
+	while (clock_time < (CLOCKS_PER_SEC * TEST_DURATION))
+	{	if ((fd = open (filename, READ_FLAGS)) < 0)
+		{	printf ("Error : not able to open file : %s\n", filename) ;
+			perror ("") ;
+			exit (1) ;
+			} ;
+
+		for (k = 0 ; k < BLOCK_COUNT ; k++)
+		{	if ((retval = read (fd, data, byte_count)) != byte_count)
+			{	printf ("Error : write returned %d (should have been %d)\n", retval, byte_count) ;
+				exit (1) ;
+				} ;
+			} ;
+
+		close (fd) ;
+
+		clock_time = clock () - start_clock ;
+		op_count ++ ;
+		} ;
+
+	stats->read_rate = (1.0 * BUFFER_SIZE) * BLOCK_COUNT * op_count ;
+	stats->read_rate *= (1.0 * CLOCKS_PER_SEC) / clock_time ;
+	printf ("%10.0f samples per sec\n", stats->read_rate) ;
+
+	unlink (filename) ;
+} /* calc_raw_performance */
+
+/*------------------------------------------------------------------------------
+*/
+
+static void
+calc_short_performance (int format, double read_rate, double write_rate)
+{	SNDFILE *file ;
+	SF_INFO	sfinfo ;
+	clock_t start_clock, clock_time ;
+	double	performance ;
+	int k, item_count, retval, op_count ;
+	const char* subtype ;
+	short *short_data ;
+	const char *filename ;
+
+	filename = "benchmark.dat" ;
+	subtype = get_subtype_str (format & SF_FORMAT_SUBMASK) ;
+
+	short_data = data ;
+	item_count = BUFFER_SIZE ;
+	for (k = 0 ; k < item_count ; k++)
+		short_data [k] = 32700.0 * sin (2 * M_PI * k / 32000.0) ;
+
+	/* Collect write stats */
+	printf ("    Write %-5s   to  %s : ", "short", subtype) ;
+	fflush (stdout) ;
+
+	sfinfo.channels = 1 ;
+	sfinfo.format = format ;
+	sfinfo.frames = 1 ;
+	sfinfo.samplerate = 32000 ;
+
+	clock_time = 0 ;
+	op_count = 0 ;
+	start_clock = clock () ;
+
+	while (clock_time < (CLOCKS_PER_SEC * TEST_DURATION))
+	{	if (! (file = sf_open (filename, SFM_WRITE, &sfinfo)))
+		{	printf ("Error : not able to open file : %s\n", filename) ;
+			perror ("") ;
+			exit (1) ;
+			} ;
+
+		/* Turn off the addition of a PEAK chunk. */
+		sf_command (file, SFC_SET_ADD_PEAK_CHUNK, NULL, SF_FALSE) ;
+
+		for (k = 0 ; k < BLOCK_COUNT ; k++)
+		{	if ((retval = sf_write_short (file, short_data, item_count)) != item_count)
+			{	printf ("Error : sf_write_short returned %d (should have been %d)\n", retval, item_count) ;
+				exit (1) ;
+				} ;
+			} ;
+
+		sf_close (file) ;
+
+		clock_time = clock () - start_clock ;
+		op_count ++ ;
+		} ;
+
+	performance = (1.0 * BUFFER_SIZE) * BLOCK_COUNT * op_count ;
+	performance *= (1.0 * CLOCKS_PER_SEC) / clock_time ;
+	printf ("%6.2f%% of raw write\n", 100.0 * performance / write_rate) ;
+
+	/* Collect read stats */
+	printf ("    Read  %-5s  from %s : ", "short", subtype) ;
+	fflush (stdout) ;
+
+	clock_time = 0 ;
+	op_count = 0 ;
+	start_clock = clock () ;
+
+	while (clock_time < (CLOCKS_PER_SEC * TEST_DURATION))
+	{	if (! (file = sf_open (filename, SFM_READ, &sfinfo)))
+		{	printf ("Error : not able to open file : %s\n", filename) ;
+			perror ("") ;
+			exit (1) ;
+			} ;
+
+		for (k = 0 ; k < BLOCK_COUNT ; k++)
+		{	if ((retval = sf_read_short (file, short_data, item_count)) != item_count)
+			{	printf ("Error : write returned %d (should have been %d)\n", retval, item_count) ;
+				exit (1) ;
+				} ;
+			} ;
+
+		sf_close (file) ;
+
+		clock_time = clock () - start_clock ;
+		op_count ++ ;
+		} ;
+
+	performance = (1.0 * item_count) * BLOCK_COUNT * op_count ;
+	performance *= (1.0 * CLOCKS_PER_SEC) / clock_time ;
+	printf ("%6.2f%% of raw read\n", 100.0 * performance / read_rate) ;
+
+	unlink (filename) ;
+
+} /* calc_short_performance */
+static void
+calc_int_performance (int format, double read_rate, double write_rate)
+{	SNDFILE *file ;
+	SF_INFO	sfinfo ;
+	clock_t start_clock, clock_time ;
+	double	performance ;
+	int k, item_count, retval, op_count ;
+	const char* subtype ;
+	int *int_data ;
+	const char *filename ;
+
+	filename = "benchmark.dat" ;
+	subtype = get_subtype_str (format & SF_FORMAT_SUBMASK) ;
+
+	int_data = data ;
+	item_count = BUFFER_SIZE ;
+	for (k = 0 ; k < item_count ; k++)
+		int_data [k] = 32700.0 * (1<<16) * sin (2 * M_PI * k / 32000.0) ;
+
+	/* Collect write stats */
+	printf ("    Write %-5s   to  %s : ", "int", subtype) ;
+	fflush (stdout) ;
+
+	sfinfo.channels = 1 ;
+	sfinfo.format = format ;
+	sfinfo.frames = 1 ;
+	sfinfo.samplerate = 32000 ;
+
+	clock_time = 0 ;
+	op_count = 0 ;
+	start_clock = clock () ;
+
+	while (clock_time < (CLOCKS_PER_SEC * TEST_DURATION))
+	{	if (! (file = sf_open (filename, SFM_WRITE, &sfinfo)))
+		{	printf ("Error : not able to open file : %s\n", filename) ;
+			perror ("") ;
+			exit (1) ;
+			} ;
+
+		/* Turn off the addition of a PEAK chunk. */
+		sf_command (file, SFC_SET_ADD_PEAK_CHUNK, NULL, SF_FALSE) ;
+
+		for (k = 0 ; k < BLOCK_COUNT ; k++)
+		{	if ((retval = sf_write_int (file, int_data, item_count)) != item_count)
+			{	printf ("Error : sf_write_short returned %d (should have been %d)\n", retval, item_count) ;
+				exit (1) ;
+				} ;
+			} ;
+
+		sf_close (file) ;
+
+		clock_time = clock () - start_clock ;
+		op_count ++ ;
+		} ;
+
+	performance = (1.0 * BUFFER_SIZE) * BLOCK_COUNT * op_count ;
+	performance *= (1.0 * CLOCKS_PER_SEC) / clock_time ;
+	printf ("%6.2f%% of raw write\n", 100.0 * performance / write_rate) ;
+
+	/* Collect read stats */
+	printf ("    Read  %-5s  from %s : ", "int", subtype) ;
+	fflush (stdout) ;
+
+	clock_time = 0 ;
+	op_count = 0 ;
+	start_clock = clock () ;
+
+	while (clock_time < (CLOCKS_PER_SEC * TEST_DURATION))
+	{	if (! (file = sf_open (filename, SFM_READ, &sfinfo)))
+		{	printf ("Error : not able to open file : %s\n", filename) ;
+			perror ("") ;
+			exit (1) ;
+			} ;
+
+		for (k = 0 ; k < BLOCK_COUNT ; k++)
+		{	if ((retval = sf_read_int (file, int_data, item_count)) != item_count)
+			{	printf ("Error : write returned %d (should have been %d)\n", retval, item_count) ;
+				exit (1) ;
+				} ;
+			} ;
+
+		sf_close (file) ;
+
+		clock_time = clock () - start_clock ;
+		op_count ++ ;
+		} ;
+
+	performance = (1.0 * item_count) * BLOCK_COUNT * op_count ;
+	performance *= (1.0 * CLOCKS_PER_SEC) / clock_time ;
+	printf ("%6.2f%% of raw read\n", 100.0 * performance / read_rate) ;
+
+	unlink (filename) ;
+
+} /* calc_int_performance */
+static void
+calc_float_performance (int format, double read_rate, double write_rate)
+{	SNDFILE *file ;
+	SF_INFO	sfinfo ;
+	clock_t start_clock, clock_time ;
+	double	performance ;
+	int k, item_count, retval, op_count ;
+	const char* subtype ;
+	float *float_data ;
+	const char *filename ;
+
+	filename = "benchmark.dat" ;
+	subtype = get_subtype_str (format & SF_FORMAT_SUBMASK) ;
+
+	float_data = data ;
+	item_count = BUFFER_SIZE ;
+	for (k = 0 ; k < item_count ; k++)
+		float_data [k] = 1.0 * sin (2 * M_PI * k / 32000.0) ;
+
+	/* Collect write stats */
+	printf ("    Write %-5s   to  %s : ", "float", subtype) ;
+	fflush (stdout) ;
+
+	sfinfo.channels = 1 ;
+	sfinfo.format = format ;
+	sfinfo.frames = 1 ;
+	sfinfo.samplerate = 32000 ;
+
+	clock_time = 0 ;
+	op_count = 0 ;
+	start_clock = clock () ;
+
+	while (clock_time < (CLOCKS_PER_SEC * TEST_DURATION))
+	{	if (! (file = sf_open (filename, SFM_WRITE, &sfinfo)))
+		{	printf ("Error : not able to open file : %s\n", filename) ;
+			perror ("") ;
+			exit (1) ;
+			} ;
+
+		/* Turn off the addition of a PEAK chunk. */
+		sf_command (file, SFC_SET_ADD_PEAK_CHUNK, NULL, SF_FALSE) ;
+
+		for (k = 0 ; k < BLOCK_COUNT ; k++)
+		{	if ((retval = sf_write_float (file, float_data, item_count)) != item_count)
+			{	printf ("Error : sf_write_short returned %d (should have been %d)\n", retval, item_count) ;
+				exit (1) ;
+				} ;
+			} ;
+
+		sf_close (file) ;
+
+		clock_time = clock () - start_clock ;
+		op_count ++ ;
+		} ;
+
+	performance = (1.0 * BUFFER_SIZE) * BLOCK_COUNT * op_count ;
+	performance *= (1.0 * CLOCKS_PER_SEC) / clock_time ;
+	printf ("%6.2f%% of raw write\n", 100.0 * performance / write_rate) ;
+
+	/* Collect read stats */
+	printf ("    Read  %-5s  from %s : ", "float", subtype) ;
+	fflush (stdout) ;
+
+	clock_time = 0 ;
+	op_count = 0 ;
+	start_clock = clock () ;
+
+	while (clock_time < (CLOCKS_PER_SEC * TEST_DURATION))
+	{	if (! (file = sf_open (filename, SFM_READ, &sfinfo)))
+		{	printf ("Error : not able to open file : %s\n", filename) ;
+			perror ("") ;
+			exit (1) ;
+			} ;
+
+		for (k = 0 ; k < BLOCK_COUNT ; k++)
+		{	if ((retval = sf_read_float (file, float_data, item_count)) != item_count)
+			{	printf ("Error : write returned %d (should have been %d)\n", retval, item_count) ;
+				exit (1) ;
+				} ;
+			} ;
+
+		sf_close (file) ;
+
+		clock_time = clock () - start_clock ;
+		op_count ++ ;
+		} ;
+
+	performance = (1.0 * item_count) * BLOCK_COUNT * op_count ;
+	performance *= (1.0 * CLOCKS_PER_SEC) / clock_time ;
+	printf ("%6.2f%% of raw read\n", 100.0 * performance / read_rate) ;
+
+	unlink (filename) ;
+
+} /* calc_float_performance */
+
+
+/*==============================================================================
+*/
+
+static int
+cpu_is_big_endian (void)
+{	unsigned char 	*cptr ;
+	int 			endtest ;
+
+	endtest = 0x12345678 ;
+
+	cptr = (unsigned char*) (&endtest) ;
+
+	if (cptr [0] == 0x12 && cptr [1] == 0x34 && cptr [3] == 0x78)
+		return SF_TRUE ;
+
+	return SF_FALSE ;
+} /* cpu_is_big_endian */
+
+static const char*
+get_subtype_str (int subtype)
+{	switch (subtype)
+	{	case SF_FORMAT_PCM_16 :
+				return "PCM_16" ;
+
+		case SF_FORMAT_PCM_24 :
+				return "PCM_24" ;
+
+		case SF_FORMAT_PCM_32 :
+				return "PCM_32" ;
+
+		case SF_FORMAT_FLOAT :
+				return "FLOAT " ;
+
+		case SF_FORMAT_DOUBLE :
+				return "DOUBLE" ;
+
+		default : break ;
+		} ;
+
+	return "UNKNOWN" ;
+} /* get_subtype_str */
+