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https://github.com/signalwire/freeswitch.git
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add libsndifle 1.0.17 to in tree libs
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3761 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Michael Jerris
210
libs/libsndfile/src/dwd.c
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210
libs/libsndfile/src/dwd.c
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/*
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** Copyright (C) 2002-2004 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation; either version 2.1 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "sfconfig.h"
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#include <stdio.h>
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#include <fcntl.h>
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#include <string.h>
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#include <ctype.h>
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#include "sndfile.h"
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#include "sfendian.h"
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#include "common.h"
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#if (ENABLE_EXPERIMENTAL_CODE == 0)
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int
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dwd_open (SF_PRIVATE *psf)
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{ if (psf)
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return SFE_UNIMPLEMENTED ;
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return (psf && 0) ;
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} /* dwd_open */
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#else
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/*------------------------------------------------------------------------------
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** Macros to handle big/little endian issues.
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*/
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#define SFE_DWD_NO_DWD 1666
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#define SFE_DWD_BAND_BIT_WIDTH 1667
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#define SFE_DWD_COMPRESSION 1668
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#define DWD_IDENTIFIER "DiamondWare Digitized\n\0\x1a"
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#define DWD_IDENTIFIER_LEN 24
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#define DWD_HEADER_LEN 57
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/*------------------------------------------------------------------------------
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** Typedefs.
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*/
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/*------------------------------------------------------------------------------
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** Private static functions.
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*/
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static int dwd_read_header (SF_PRIVATE *psf) ;
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static int dwd_close (SF_PRIVATE *psf) ;
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/*------------------------------------------------------------------------------
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** Public function.
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*/
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int
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dwd_open (SF_PRIVATE *psf)
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{ int subformat, error = 0 ;
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if (psf->mode == SFM_READ || (psf->mode == SFM_RDWR && psf->filelength > 0))
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{ if ((error = dwd_read_header (psf)))
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return error ;
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} ;
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if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_DWD)
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return SFE_BAD_OPEN_FORMAT ;
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subformat = psf->sf.format & SF_FORMAT_SUBMASK ;
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if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
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{
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/*-psf->endian = psf->sf.format & SF_FORMAT_ENDMASK ;
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if (CPU_IS_LITTLE_ENDIAN && psf->endian == SF_ENDIAN_CPU)
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psf->endian = SF_ENDIAN_LITTLE ;
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else if (psf->endian != SF_ENDIAN_LITTLE)
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psf->endian = SF_ENDIAN_BIG ;
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if (! (encoding = dwd_write_header (psf, SF_FALSE)))
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return psf->error ;
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psf->write_header = dwd_write_header ;
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-*/
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} ;
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psf->container_close = dwd_close ;
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/*-psf->blockwidth = psf->bytewidth * psf->sf.channels ;-*/
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return error ;
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} /* dwd_open */
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/*------------------------------------------------------------------------------
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*/
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static int
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dwd_close (SF_PRIVATE *psf)
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{
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psf = psf ;
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return 0 ;
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} /* dwd_close */
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/* This struct contains all the fields of interest om the DWD header, but does not
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** do so in the same order and layout as the actual file, header.
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** No assumptions are made about the packing of this struct.
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*/
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typedef struct
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{ unsigned char major, minor, compression, channels, bitwidth ;
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unsigned short srate, maxval ;
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unsigned int id, datalen, frames, offset ;
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} DWD_HEADER ;
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static int
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dwd_read_header (SF_PRIVATE *psf)
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{ DWD_HEADER dwdh ;
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memset (psf->u.cbuf, 0, sizeof (psf->u.cbuf)) ;
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/* Set position to start of file to begin reading header. */
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psf_binheader_readf (psf, "pb", 0, psf->u.cbuf, DWD_IDENTIFIER_LEN) ;
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if (memcmp (psf->u.cbuf, DWD_IDENTIFIER, DWD_IDENTIFIER_LEN) != 0)
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return SFE_DWD_NO_DWD ;
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psf_log_printf (psf, "Read only : DiamondWare Digitized (.dwd)\n", psf->u.cbuf) ;
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psf_binheader_readf (psf, "11", &dwdh.major, &dwdh.minor) ;
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psf_binheader_readf (psf, "e4j1", &dwdh.id, 1, &dwdh.compression) ;
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psf_binheader_readf (psf, "e211", &dwdh.srate, &dwdh.channels, &dwdh.bitwidth) ;
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psf_binheader_readf (psf, "e24", &dwdh.maxval, &dwdh.datalen) ;
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psf_binheader_readf (psf, "e44", &dwdh.frames, &dwdh.offset) ;
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psf_log_printf (psf, " Version Major : %d\n Version Minor : %d\n Unique ID : %08X\n",
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dwdh.major, dwdh.minor, dwdh.id) ;
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psf_log_printf (psf, " Compression : %d => ", dwdh.compression) ;
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if (dwdh.compression != 0)
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{ psf_log_printf (psf, "Unsupported compression\n") ;
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return SFE_DWD_COMPRESSION ;
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}
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else
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psf_log_printf (psf, "None\n") ;
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psf_log_printf (psf, " Sample Rate : %d\n Channels : %d\n"
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" Bit Width : %d\n",
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dwdh.srate, dwdh.channels, dwdh.bitwidth) ;
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switch (dwdh.bitwidth)
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{ case 8 :
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psf->sf.format = SF_FORMAT_DWD | SF_FORMAT_PCM_S8 ;
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psf->bytewidth = 1 ;
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break ;
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case 16 :
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psf->sf.format = SF_FORMAT_DWD | SF_FORMAT_PCM_16 ;
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psf->bytewidth = 2 ;
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break ;
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default :
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psf_log_printf (psf, "*** Bad bit width %d\n", dwdh.bitwidth) ;
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return SFE_DWD_BAND_BIT_WIDTH ;
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} ;
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if (psf->filelength != dwdh.offset + dwdh.datalen)
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{ psf_log_printf (psf, " Data Length : %d (should be %D)\n", dwdh.datalen, psf->filelength - dwdh.offset) ;
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dwdh.datalen = (unsigned int) (psf->filelength - dwdh.offset) ;
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}
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else
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psf_log_printf (psf, " Data Length : %d\n", dwdh.datalen) ;
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psf_log_printf (psf, " Max Value : %d\n", dwdh.maxval) ;
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psf_log_printf (psf, " Frames : %d\n", dwdh.frames) ;
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psf_log_printf (psf, " Data Offset : %d\n", dwdh.offset) ;
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psf->datalength = dwdh.datalen ;
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psf->dataoffset = dwdh.offset ;
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psf->endian = SF_ENDIAN_LITTLE ;
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psf->sf.samplerate = dwdh.srate ;
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psf->sf.channels = dwdh.channels ;
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psf->sf.sections = 1 ;
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return pcm_init (psf) ;
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} /* dwd_read_header */
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/*------------------------------------------------------------------------------
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*/
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#endif
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/*
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** Do not edit or modify anything in this comment block.
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** The arch-tag line is a file identity tag for the GNU Arch
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** revision control system.
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**
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** arch-tag: a5e1d2a6-a840-4039-a0e7-e1a43eb05a4f
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*/
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