1 files changed, 367 insertions, 0 deletions
diff --git a/libs/libsndfile/src/nist.c b/libs/libsndfile/src/nist.c
new file mode 100644
index 0000000000..2ab20dbf96
--- /dev/null
+++ b/libs/libsndfile/src/nist.c
@@ -0,0 +1,367 @@
+/*
+** Copyright (C) 1999-2004 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.
+*/
+
+/*
+**	Some of the information used to read NIST files was gleaned from
+**	reading the code of Bill Schottstaedt's sndlib library
+**		ftp://ccrma-ftp.stanford.edu/pub/Lisp/sndlib.tar.gz
+**	However, no code from that package was used.
+*/
+
+#include	"sfconfig.h"
+
+#include	<stdio.h>
+#include	<fcntl.h>
+#include	<string.h>
+#include	<ctype.h>
+
+#include	"sndfile.h"
+#include	"sfendian.h"
+#include	"common.h"
+
+/*------------------------------------------------------------------------------
+*/
+
+#define	NIST_HEADER_LENGTH	1024
+
+/*------------------------------------------------------------------------------
+** Private static functions.
+*/
+
+static	int	nist_close	(SF_PRIVATE *psf) ;
+static	int nist_write_header	(SF_PRIVATE *psf, int calc_length) ;
+static	int nist_read_header	(SF_PRIVATE *psf) ;
+
+/*------------------------------------------------------------------------------
+*/
+
+int
+nist_open	(SF_PRIVATE *psf)
+{	int error ;
+
+	if (psf->mode == SFM_READ || (psf->mode == SFM_RDWR && psf->filelength > 0))
+	{	if ((error = nist_read_header (psf)))
+			return error ;
+		} ;
+
+	if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
+	{	if (psf->is_pipe)
+			return SFE_NO_PIPE_WRITE ;
+
+		if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_NIST)
+			return	SFE_BAD_OPEN_FORMAT ;
+
+		psf->endian = psf->sf.format & SF_FORMAT_ENDMASK ;
+		if (psf->endian == 0 || psf->endian == SF_ENDIAN_CPU)
+			psf->endian = (CPU_IS_BIG_ENDIAN) ? SF_ENDIAN_BIG : SF_ENDIAN_LITTLE ;
+
+		psf->blockwidth = psf->bytewidth * psf->sf.channels ;
+		psf->sf.frames = 0 ;
+
+		if ((error = nist_write_header (psf, SF_FALSE)))
+			return error ;
+
+		psf->write_header = nist_write_header ;
+		} ;
+
+	psf->container_close = nist_close ;
+
+	switch (psf->sf.format & SF_FORMAT_SUBMASK)
+	{	case SF_FORMAT_PCM_S8 :
+				error = pcm_init (psf) ;
+				break ;
+
+		case SF_FORMAT_PCM_16 :
+		case SF_FORMAT_PCM_24 :
+		case SF_FORMAT_PCM_32 :
+				error = pcm_init (psf) ;
+				break ;
+
+		case SF_FORMAT_ULAW :
+				error = ulaw_init (psf) ;
+				break ;
+
+		case SF_FORMAT_ALAW :
+				error = alaw_init (psf) ;
+				break ;
+
+		default : error = SFE_UNIMPLEMENTED ;
+				break ;
+		} ;
+
+	return error ;
+} /* nist_open */
+
+/*------------------------------------------------------------------------------
+*/
+
+static char bad_header [] =
+{	'N', 'I', 'S', 'T', '_', '1', 'A', 0x0d, 0x0a,
+	' ', ' ', ' ', '1', '0', '2', '4', 0x0d, 0x0a,
+	0
+} ;
+
+	static int
+nist_read_header (SF_PRIVATE *psf)
+{	char	*psf_header ;
+	int		bitwidth = 0, bytes = 0, count, encoding ;
+	char 	str [64], *cptr ;
+	long	samples ;
+
+	psf->sf.format = SF_FORMAT_NIST ;
+
+	psf_header = psf->u.cbuf ;
+
+	if (sizeof (psf->header) <= NIST_HEADER_LENGTH)
+		return SFE_INTERNAL ;
+
+	/* Go to start of file and read in the whole header. */
+	psf_binheader_readf (psf, "pb", 0, psf_header, NIST_HEADER_LENGTH) ;
+
+	/* Header is a string, so make sure it is null terminated. */
+	psf_header [NIST_HEADER_LENGTH] = 0 ;
+
+	/* Now trim the header after the end marker. */
+	if ((cptr = strstr (psf_header, "end_head")))
+	{	cptr += strlen ("end_head") + 1 ;
+		cptr [0] = 0 ;
+		} ;
+
+	if (strstr (psf_header, bad_header) == psf_header)
+		return SFE_NIST_CRLF_CONVERISON ;
+
+	/* Make sure its a NIST file. */
+	if (strstr (psf_header, "NIST_1A\n") != psf_header)
+	{	psf_log_printf (psf, "Not a NIST file.\n") ;
+		return SFE_NIST_BAD_HEADER ;
+		} ;
+
+	if (sscanf (psf_header, "NIST_1A\n%d\n", &count) == 1)
+		psf->dataoffset = count ;
+	else
+	{	psf_log_printf (psf, "*** Suspicious header length.\n") ;
+		psf->dataoffset = NIST_HEADER_LENGTH ;
+		} ;
+
+	/* Determine sample encoding, start by assuming PCM. */
+	encoding = SF_FORMAT_PCM_U8 ;
+	if ((cptr = strstr (psf_header, "sample_coding -s")))
+	{	sscanf (cptr, "sample_coding -s%d %63s", &count, str) ;
+
+		if (strcmp (str, "pcm") == 0)
+			encoding = SF_FORMAT_PCM_U8 ;
+		else if (strcmp (str, "alaw") == 0)
+			encoding = SF_FORMAT_ALAW ;
+		else if ((strcmp (str, "ulaw") == 0) || (strcmp (str, "mu-law") == 0))
+			encoding = SF_FORMAT_ULAW ;
+		else
+		{	psf_log_printf (psf, "*** Unknown encoding : %s\n", str) ;
+			encoding = 0 ;
+			} ;
+		} ;
+
+	if ((cptr = strstr (psf_header, "channel_count -i ")))
+		sscanf (cptr, "channel_count -i %d", &(psf->sf.channels)) ;
+
+	if ((cptr = strstr (psf_header, "sample_rate -i ")))
+		sscanf (cptr, "sample_rate -i %d", &(psf->sf.samplerate)) ;
+
+	if ((cptr = strstr (psf_header, "sample_count -i ")))
+	{	sscanf (psf_header, "sample_count -i %ld", &samples) ;
+		psf->sf.frames = samples ;
+		} ;
+
+	if ((cptr = strstr (psf_header, "sample_n_bytes -i ")))
+		sscanf (cptr, "sample_n_bytes -i %d", &(psf->bytewidth)) ;
+
+	/* Default endian-ness (for 8 bit, u-law, A-law. */
+	psf->endian = (CPU_IS_BIG_ENDIAN) ? SF_ENDIAN_BIG : SF_ENDIAN_LITTLE ;
+
+	/* This is where we figure out endian-ness. */
+	if ((cptr = strstr (psf_header, "sample_byte_format -s")))
+	{	sscanf (cptr, "sample_byte_format -s%d %8s", &bytes, str) ;
+		if (bytes > 1)
+		{	if (psf->bytewidth == 0)
+				psf->bytewidth = bytes ;
+			else if (psf->bytewidth != bytes)
+			{	psf_log_printf (psf, "psf->bytewidth (%d) != bytes (%d)\n", psf->bytewidth, bytes) ;
+				return SFE_NIST_BAD_ENCODING ;
+				} ;
+
+			if (strstr (str, "01") == str)
+				psf->endian = SF_ENDIAN_LITTLE ;
+			else if (strstr (str, "10"))
+				psf->endian = SF_ENDIAN_BIG ;
+			else
+			{	psf_log_printf (psf, "Weird endian-ness : %s\n", str) ;
+				return SFE_NIST_BAD_ENCODING ;
+				} ;
+			} ;
+
+		psf->sf.format |= psf->endian ;
+		} ;
+
+	if ((cptr = strstr (psf_header, "sample_sig_bits -i ")))
+		sscanf (cptr, "sample_sig_bits -i %d", &bitwidth) ;
+
+	if (strstr (psf_header, "channels_interleaved -s5 FALSE"))
+	{	psf_log_printf (psf, "Non-interleaved data unsupported.\n", str) ;
+		return SFE_NIST_BAD_ENCODING ;
+		} ;
+
+	psf->blockwidth = psf->sf.channels * psf->bytewidth ;
+	psf->datalength = psf->filelength - psf->dataoffset ;
+
+	psf_fseek (psf, psf->dataoffset, SEEK_SET) ;
+
+	if (encoding == SF_FORMAT_PCM_U8)
+	{	switch (psf->bytewidth)
+		{	case 1 :
+					psf->sf.format |= SF_FORMAT_PCM_S8 ;
+					break ;
+
+			case 2 :
+					psf->sf.format |= SF_FORMAT_PCM_16 ;
+					break ;
+
+			case 3 :
+					psf->sf.format |= SF_FORMAT_PCM_24 ;
+					break ;
+
+			case 4 :
+					psf->sf.format |= SF_FORMAT_PCM_32 ;
+					break ;
+
+			default : break ;
+			} ;
+		}
+	else if (encoding != 0)
+		psf->sf.format |= encoding ;
+	else
+		return SFE_UNIMPLEMENTED ;
+
+	return 0 ;
+} /* nist_read_header */
+
+static int
+nist_close	(SF_PRIVATE *psf)
+{
+	if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
+		nist_write_header (psf, SF_TRUE) ;
+
+	return 0 ;
+} /* nist_close */
+
+/*=========================================================================
+*/
+
+static int
+nist_write_header (SF_PRIVATE *psf, int calc_length)
+{	const char	*end_str ;
+	long		samples ;
+	sf_count_t	current ;
+
+	current = psf_ftell (psf) ;
+
+	if (calc_length)
+	{	psf->filelength = psf_get_filelen (psf) ;
+
+		psf->datalength = psf->filelength - psf->dataoffset ;
+
+		if (psf->dataend)
+			psf->datalength -= psf->filelength - psf->dataend ;
+
+		if (psf->bytewidth > 0)
+			psf->sf.frames = psf->datalength / (psf->bytewidth * psf->sf.channels) ;
+		} ;
+
+	if (psf->endian == SF_ENDIAN_BIG)
+		end_str = "10" ;
+	else if (psf->endian == SF_ENDIAN_LITTLE)
+		end_str = "01" ;
+	else
+		end_str = "error" ;
+
+	/* Clear the whole header. */
+	memset (psf->header, 0, sizeof (psf->header)) ;
+	psf->headindex = 0 ;
+
+	psf_fseek (psf, 0, SEEK_SET) ;
+
+	psf_asciiheader_printf (psf, "NIST_1A\n   1024\n") ;
+	psf_asciiheader_printf (psf, "channel_count -i %d\n", psf->sf.channels) ;
+	psf_asciiheader_printf (psf, "sample_rate -i %d\n", psf->sf.samplerate) ;
+
+	switch (psf->sf.format & SF_FORMAT_SUBMASK)
+	{	case SF_FORMAT_PCM_S8 :
+				psf_asciiheader_printf (psf, "sample_coding -s3 pcm\n") ;
+				psf_asciiheader_printf (psf, "sample_n_bytes -i 1\n"
+											"sample_sig_bits -i 8\n") ;
+				break ;
+
+		case SF_FORMAT_PCM_16 :
+		case SF_FORMAT_PCM_24 :
+		case SF_FORMAT_PCM_32 :
+				psf_asciiheader_printf (psf, "sample_n_bytes -i %d\n", psf->bytewidth) ;
+				psf_asciiheader_printf (psf, "sample_sig_bits -i %d\n", psf->bytewidth * 8) ;
+				psf_asciiheader_printf (psf, "sample_coding -s3 pcm\n"
+								"sample_byte_format -s%d %s\n", psf->bytewidth, end_str) ;
+				break ;
+
+		case SF_FORMAT_ALAW :
+				psf_asciiheader_printf (psf, "sample_coding -s4 alaw\n") ;
+				psf_asciiheader_printf (psf, "sample_n_bytes -s1 1\n") ;
+				break ;
+
+		case SF_FORMAT_ULAW :
+				psf_asciiheader_printf (psf, "sample_coding -s4 ulaw\n") ;
+				psf_asciiheader_printf (psf, "sample_n_bytes -s1 1\n") ;
+				break ;
+
+		default : return SFE_UNIMPLEMENTED ;
+		} ;
+
+	psf->dataoffset = NIST_HEADER_LENGTH ;
+
+	/* Fix this */
+	samples = psf->sf.frames ;
+	psf_asciiheader_printf (psf, "sample_count -i %ld\n", samples) ;
+	psf_asciiheader_printf (psf, "end_head\n") ;
+
+	/* Zero fill to dataoffset. */
+	psf_binheader_writef (psf, "z", (size_t) (NIST_HEADER_LENGTH - psf->headindex)) ;
+
+	psf_fwrite (psf->header, psf->headindex, 1, psf) ;
+
+	if (psf->error)
+		return psf->error ;
+
+	if (current > 0)
+		psf_fseek (psf, current, SEEK_SET) ;
+
+	return psf->error ;
+} /* nist_write_header */
+
+
+/*
+** Do not edit or modify anything in this comment block.
+** The arch-tag line is a file identity tag for the GNU Arch 
+** revision control system.
+**
+** arch-tag: b45ed85d-9e22-4ad9-b78c-4b58b67152a8
+*/