diff --git a/jni/libsndfile-1.0.25/src/pvf.c b/jni/libsndfile-1.0.25/src/pvf.c
new file mode 100644
index 0000000..4ea24b6
--- /dev/null
+++ b/jni/libsndfile-1.0.25/src/pvf.c
@@ -0,0 +1,188 @@
+/*
+** 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 Lesser General Public License as published by
+** the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser 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	<fcntl.h>
+#include	<string.h>
+#include	<ctype.h>
+
+#include	"sndfile.h"
+#include	"sfendian.h"
+#include	"common.h"
+
+/*------------------------------------------------------------------------------
+** Macros to handle big/little endian issues.
+*/
+
+#define PVF1_MARKER		(MAKE_MARKER ('P', 'V', 'F', '1'))
+
+/*------------------------------------------------------------------------------
+** Private static functions.
+*/
+
+static	int		pvf_close		(SF_PRIVATE *psf) ;
+
+static int		pvf_write_header (SF_PRIVATE *psf, int calc_length) ;
+static int		pvf_read_header (SF_PRIVATE *psf) ;
+
+/*------------------------------------------------------------------------------
+** Public function.
+*/
+
+int
+pvf_open	(SF_PRIVATE *psf)
+{	int		subformat ;
+	int		error = 0 ;
+
+	if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
+	{	if ((error = pvf_read_header (psf)))
+			return error ;
+		} ;
+
+	subformat = SF_CODEC (psf->sf.format) ;
+
+	if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+	{	if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_PVF)
+			return	SFE_BAD_OPEN_FORMAT ;
+
+		psf->endian = SF_ENDIAN_BIG ;
+
+		if (pvf_write_header (psf, SF_FALSE))
+			return psf->error ;
+
+		psf->write_header = pvf_write_header ;
+		} ;
+
+	psf->container_close = pvf_close ;
+
+	psf->blockwidth = psf->bytewidth * psf->sf.channels ;
+
+	switch (subformat)
+	{	case SF_FORMAT_PCM_S8 :	/* 8-bit linear PCM. */
+		case SF_FORMAT_PCM_16 :	/* 16-bit linear PCM. */
+		case SF_FORMAT_PCM_32 :	/* 32-bit linear PCM. */
+				error = pcm_init (psf) ;
+				break ;
+
+		default :	break ;
+		} ;
+
+	return error ;
+} /* pvf_open */
+
+/*------------------------------------------------------------------------------
+*/
+
+static int
+pvf_close	(SF_PRIVATE * UNUSED (psf))
+{
+	return 0 ;
+} /* pvf_close */
+
+static int
+pvf_write_header (SF_PRIVATE *psf, int UNUSED (calc_length))
+{	sf_count_t	current ;
+
+	if (psf->pipeoffset > 0)
+		return 0 ;
+
+	current = psf_ftell (psf) ;
+
+	/* Reset the current header length to zero. */
+	psf->header [0] = 0 ;
+	psf->headindex = 0 ;
+
+	if (psf->is_pipe == SF_FALSE)
+		psf_fseek (psf, 0, SEEK_SET) ;
+
+	snprintf ((char*) psf->header, sizeof (psf->header), "PVF1\n%d %d %d\n",
+		psf->sf.channels, psf->sf.samplerate, psf->bytewidth * 8) ;
+
+	psf->headindex = strlen ((char*) psf->header) ;
+
+	/* Header construction complete so write it out. */
+	psf_fwrite (psf->header, psf->headindex, 1, psf) ;
+
+	if (psf->error)
+		return psf->error ;
+
+	psf->dataoffset = psf->headindex ;
+
+	if (current > 0)
+		psf_fseek (psf, current, SEEK_SET) ;
+
+	return psf->error ;
+} /* pvf_write_header */
+
+static int
+pvf_read_header (SF_PRIVATE *psf)
+{	char	buffer [32] ;
+	int		marker, channels, samplerate, bitwidth ;
+
+	psf_binheader_readf (psf, "pmj", 0, &marker, 1) ;
+	psf_log_printf (psf, "%M\n", marker) ;
+
+	if (marker != PVF1_MARKER)
+		return SFE_PVF_NO_PVF1 ;
+
+	/* Grab characters up until a newline which is replaced by an EOS. */
+	psf_binheader_readf (psf, "G", buffer, sizeof (buffer)) ;
+
+	if (sscanf (buffer, "%d %d %d", &channels, &samplerate, &bitwidth) != 3)
+		return SFE_PVF_BAD_HEADER ;
+
+	psf_log_printf (psf, " Channels    : %d\n Sample rate : %d\n Bit width   : %d\n",
+				channels, samplerate, bitwidth) ;
+
+	psf->sf.channels = channels ;
+	psf->sf.samplerate = samplerate ;
+
+	switch (bitwidth)
+	{	case 8 :
+				psf->sf.format = SF_FORMAT_PVF | SF_FORMAT_PCM_S8 ;
+				psf->bytewidth = 1 ;
+				break ;
+
+		case 16 :
+				psf->sf.format = SF_FORMAT_PVF | SF_FORMAT_PCM_16 ;
+				psf->bytewidth = 2 ;
+				break ;
+		case 32 :
+				psf->sf.format = SF_FORMAT_PVF | SF_FORMAT_PCM_32 ;
+				psf->bytewidth = 4 ;
+				break ;
+
+		default :
+				return SFE_PVF_BAD_BITWIDTH ;
+		} ;
+
+	psf->dataoffset = psf_ftell (psf) ;
+	psf_log_printf (psf, " Data Offset : %D\n", psf->dataoffset) ;
+
+	psf->endian = SF_ENDIAN_BIG ;
+
+	psf->datalength = psf->filelength - psf->dataoffset ;
+	psf->blockwidth = psf->sf.channels * psf->bytewidth ;
+
+	if (! psf->sf.frames && psf->blockwidth)
+		psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
+
+	return 0 ;
+} /* pvf_read_header */