--- /dev/null
+/*
+** 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"
+
+#if (ENABLE_EXPERIMENTAL_CODE == 0)
+
+int
+dwd_open (SF_PRIVATE *psf)
+{ if (psf)
+ return SFE_UNIMPLEMENTED ;
+ return 0 ;
+} /* dwd_open */
+
+#else
+
+/*------------------------------------------------------------------------------
+** Macros to handle big/little endian issues.
+*/
+
+#define SFE_DWD_NO_DWD 1666
+#define SFE_DWD_BAND_BIT_WIDTH 1667
+#define SFE_DWD_COMPRESSION 1668
+
+#define DWD_IDENTIFIER "DiamondWare Digitized\n\0\x1a"
+#define DWD_IDENTIFIER_LEN 24
+
+#define DWD_HEADER_LEN 57
+
+/*------------------------------------------------------------------------------
+** Typedefs.
+*/
+
+/*------------------------------------------------------------------------------
+** Private static functions.
+*/
+
+static int dwd_read_header (SF_PRIVATE *psf) ;
+
+static int dwd_close (SF_PRIVATE *psf) ;
+
+/*------------------------------------------------------------------------------
+** Public function.
+*/
+
+int
+dwd_open (SF_PRIVATE *psf)
+{ int error = 0 ;
+
+ if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
+ { if ((error = dwd_read_header (psf)))
+ return error ;
+ } ;
+
+ if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_DWD)
+ return SFE_BAD_OPEN_FORMAT ;
+
+ if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+ {
+ /*-psf->endian = SF_ENDIAN (psf->sf.format) ;
+ if (CPU_IS_LITTLE_ENDIAN && psf->endian == SF_ENDIAN_CPU)
+ psf->endian = SF_ENDIAN_LITTLE ;
+ else if (psf->endian != SF_ENDIAN_LITTLE)
+ psf->endian = SF_ENDIAN_BIG ;
+
+ if (! (encoding = dwd_write_header (psf, SF_FALSE)))
+ return psf->error ;
+
+ psf->write_header = dwd_write_header ;
+ -*/
+ } ;
+
+ psf->container_close = dwd_close ;
+
+ /*-psf->blockwidth = psf->bytewidth * psf->sf.channels ;-*/
+
+ return error ;
+} /* dwd_open */
+
+/*------------------------------------------------------------------------------
+*/
+
+static int
+dwd_close (SF_PRIVATE * UNUSED (psf))
+{
+ return 0 ;
+} /* dwd_close */
+
+/* This struct contains all the fields of interest om the DWD header, but does not
+** do so in the same order and layout as the actual file, header.
+** No assumptions are made about the packing of this struct.
+*/
+typedef struct
+{ unsigned char major, minor, compression, channels, bitwidth ;
+ unsigned short srate, maxval ;
+ unsigned int id, datalen, frames, offset ;
+} DWD_HEADER ;
+
+static int
+dwd_read_header (SF_PRIVATE *psf)
+{ DWD_HEADER dwdh ;
+
+ memset (psf->u.cbuf, 0, sizeof (psf->u.cbuf)) ;
+ /* Set position to start of file to begin reading header. */
+ psf_binheader_readf (psf, "pb", 0, psf->u.cbuf, DWD_IDENTIFIER_LEN) ;
+
+ if (memcmp (psf->u.cbuf, DWD_IDENTIFIER, DWD_IDENTIFIER_LEN) != 0)
+ return SFE_DWD_NO_DWD ;
+
+ psf_log_printf (psf, "Read only : DiamondWare Digitized (.dwd)\n", psf->u.cbuf) ;
+
+ psf_binheader_readf (psf, "11", &dwdh.major, &dwdh.minor) ;
+ psf_binheader_readf (psf, "e4j1", &dwdh.id, 1, &dwdh.compression) ;
+ psf_binheader_readf (psf, "e211", &dwdh.srate, &dwdh.channels, &dwdh.bitwidth) ;
+ psf_binheader_readf (psf, "e24", &dwdh.maxval, &dwdh.datalen) ;
+ psf_binheader_readf (psf, "e44", &dwdh.frames, &dwdh.offset) ;
+
+ psf_log_printf (psf, " Version Major : %d\n Version Minor : %d\n Unique ID : %08X\n",
+ dwdh.major, dwdh.minor, dwdh.id) ;
+ psf_log_printf (psf, " Compression : %d => ", dwdh.compression) ;
+
+ if (dwdh.compression != 0)
+ { psf_log_printf (psf, "Unsupported compression\n") ;
+ return SFE_DWD_COMPRESSION ;
+ }
+ else
+ psf_log_printf (psf, "None\n") ;
+
+ psf_log_printf (psf, " Sample Rate : %d\n Channels : %d\n"
+ " Bit Width : %d\n",
+ dwdh.srate, dwdh.channels, dwdh.bitwidth) ;
+
+ switch (dwdh.bitwidth)
+ { case 8 :
+ psf->sf.format = SF_FORMAT_DWD | SF_FORMAT_PCM_S8 ;
+ psf->bytewidth = 1 ;
+ break ;
+
+ case 16 :
+ psf->sf.format = SF_FORMAT_DWD | SF_FORMAT_PCM_16 ;
+ psf->bytewidth = 2 ;
+ break ;
+
+ default :
+ psf_log_printf (psf, "*** Bad bit width %d\n", dwdh.bitwidth) ;
+ return SFE_DWD_BAND_BIT_WIDTH ;
+ } ;
+
+ if (psf->filelength != dwdh.offset + dwdh.datalen)
+ { psf_log_printf (psf, " Data Length : %d (should be %D)\n", dwdh.datalen, psf->filelength - dwdh.offset) ;
+ dwdh.datalen = (unsigned int) (psf->filelength - dwdh.offset) ;
+ }
+ else
+ psf_log_printf (psf, " Data Length : %d\n", dwdh.datalen) ;
+
+ psf_log_printf (psf, " Max Value : %d\n", dwdh.maxval) ;
+ psf_log_printf (psf, " Frames : %d\n", dwdh.frames) ;
+ psf_log_printf (psf, " Data Offset : %d\n", dwdh.offset) ;
+
+ psf->datalength = dwdh.datalen ;
+ psf->dataoffset = dwdh.offset ;
+
+ psf->endian = SF_ENDIAN_LITTLE ;
+
+ psf->sf.samplerate = dwdh.srate ;
+ psf->sf.channels = dwdh.channels ;
+ psf->sf.sections = 1 ;
+
+ return pcm_init (psf) ;
+} /* dwd_read_header */
+
+/*------------------------------------------------------------------------------
+*/
+
+#endif
+
projects / Faustine.git / blobdiff