diff options
Diffstat (limited to 'libs/libsndfile/src/wve.c')
-rw-r--r-- | libs/libsndfile/src/wve.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/libs/libsndfile/src/wve.c b/libs/libsndfile/src/wve.c new file mode 100644 index 0000000000..54a08336c2 --- /dev/null +++ b/libs/libsndfile/src/wve.c @@ -0,0 +1,125 @@ +/* +** Copyright (C) 2002-2004 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. +*/ + +#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 +wve_open (SF_PRIVATE *psf) +{ if (psf) + return SFE_UNIMPLEMENTED ; + return (psf && 0) ; +} /* wve_open */ + +#else + +#define SFE_WVE_NOT_WVE 666 + +/*------------------------------------------------------------------------------ +** Macros to handle big/little endian issues. +*/ + +#define ALAW_MARKER MAKE_MARKER ('A', 'L', 'a', 'w') +#define SOUN_MARKER MAKE_MARKER ('S', 'o', 'u', 'n') +#define DFIL_MARKER MAKE_MARKER ('d', 'F', 'i', 'l') + +/*------------------------------------------------------------------------------ +** Private static functions. +*/ + +static int wve_read_header (SF_PRIVATE *psf) ; + +/*------------------------------------------------------------------------------ +** Public function. +*/ + +int +wve_open (SF_PRIVATE *psf) +{ int subformat, error = 0 ; + + if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR) + return SFE_UNIMPLEMENTED ; + + if ((error = wve_read_header (psf))) + return error ; + + if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_WVE) + return SFE_BAD_OPEN_FORMAT ; + + subformat = psf->sf.format & SF_FORMAT_SUBMASK ; + + return error ; +} /* wve_open */ + +/*------------------------------------------------------------------------------ +*/ + +static int +wve_read_header (SF_PRIVATE *psf) +{ int marker ; + + /* Set position to start of file to begin reading header. */ + psf_binheader_readf (psf, "pm", 0, &marker) ; + if (marker != ALAW_MARKER) + return SFE_WVE_NOT_WVE ; + + psf_binheader_readf (psf, "m", &marker) ; + if (marker != SOUN_MARKER) + return SFE_WVE_NOT_WVE ; + + psf_binheader_readf (psf, "m", &marker) ; + if (marker != DFIL_MARKER) + return SFE_WVE_NOT_WVE ; + + psf_log_printf (psf, "Read only : Psion Palmtop Alaw (.wve)\n" + " Sample Rate : 8000\n" + " Channels : 1\n" + " Encoding : A-law\n") ; + + psf->dataoffset = 0x20 ; + psf->datalength = psf->filelength - psf->dataoffset ; + + psf->sf.format = SF_FORMAT_WVE | SF_FORMAT_ALAW ; + psf->sf.samplerate = 8000 ; + psf->sf.frames = psf->datalength ; + psf->sf.channels = 1 ; + + return alaw_init (psf) ; +} /* wve_read_header */ + +/*------------------------------------------------------------------------------ +*/ + +#endif +/* +** 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: ba368cb5-523f-45e4-98c1-5b99a102f73f +*/ |