ref: 46d58fc082a8537f9de79342cd7d7d24974c984d
dir: /common/libsndfile/src/rx2.c/
/*
** Copyright (C) 2001-2002 Erik de Castro Lopo <[email protected]>
**
** 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 <stdio.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include "sndfile.h"
#include "config.h"
#include "sfendian.h"
#include "common.h"
/*------------------------------------------------------------------------------
* Macros to handle big/little endian issues.
*/
#define CAT_MARKER (MAKE_MARKER ('C', 'A', 'T', ' '))
#define GLOB_MARKER (MAKE_MARKER ('G', 'L', 'O', 'B'))
#define RECY_MARKER (MAKE_MARKER ('R', 'E', 'C', 'Y'))
#define SLCL_MARKER (MAKE_MARKER ('S', 'L', 'C', 'L'))
#define SLCE_MARKER (MAKE_MARKER ('S', 'L', 'C', 'E'))
#define DEVL_MARKER (MAKE_MARKER ('D', 'E', 'V', 'L'))
#define TRSH_MARKER (MAKE_MARKER ('T', 'R', 'S', 'H'))
#define EQ_MARKER (MAKE_MARKER ('E', 'Q', ' ', ' '))
#define COMP_MARKER (MAKE_MARKER ('C', 'O', 'M', 'P'))
#define SINF_MARKER (MAKE_MARKER ('S', 'I', 'N', 'F'))
#define SDAT_MARKER (MAKE_MARKER ('S', 'D', 'A', 'T'))
/*------------------------------------------------------------------------------
* Typedefs for file chunks.
*/
/*------------------------------------------------------------------------------
* Private static functions.
*/
static int rx2_close (SF_PRIVATE *psf) ;
/*------------------------------------------------------------------------------
** Public functions.
*/
int
rx2_open (SF_PRIVATE *psf)
{ int error, marker, length, glob_offset, slce_count ;
int sdat_length = 0, slce_total = 0 ;
/* So far only doing read. */
psf_binheader_readf (psf, "Epm4", 0, &marker, &length) ;
if (marker != CAT_MARKER)
{ psf_log_printf (psf, "length : %d\n", length) ;
return -1000 ;
} ;
if (length != psf->filelength - 8)
psf_log_printf (psf, "%D : %d (should be %d)\n", marker, length, psf->filelength - 8) ;
else
psf_log_printf (psf, "%D : %d\n", marker, length) ;
/* 'REX2' marker */
psf_binheader_readf (psf, "m", &marker) ;
psf_log_printf (psf, "%D", marker) ;
/* 'HEAD' marker */
psf_binheader_readf (psf, "m", &marker) ;
psf_log_printf (psf, "%D\n", marker) ;
/* Grab 'GLOB' offset. */
psf_binheader_readf (psf, "E4", &glob_offset) ;
glob_offset += 0x14 ; /* Add the current file offset. */
/* Jump to offset 0x30 */
psf_binheader_readf (psf, "p", 0x30) ;
/* Get name length */
length = 0 ;
psf_binheader_readf (psf, "1", &length) ;
if (length >= SIGNED_SIZEOF (psf->buffer))
{ psf_log_printf (psf, " Text : %d *** Error : Too sf_count_t!\n") ;
return -1001 ;
}
memset (psf->buffer, 0, SIGNED_SIZEOF (psf->buffer)) ;
psf_binheader_readf (psf, "b", psf->buffer, length) ;
psf_log_printf (psf, " Text : \"%s\"\n", psf->buffer) ;
/* Jump to GLOB offset position. */
if (glob_offset & 1)
glob_offset ++ ;
psf_binheader_readf (psf, "p", glob_offset) ;
slce_count = 0 ;
/* GLOB */
while (1)
{ psf_binheader_readf (psf, "m", &marker) ;
if (marker != SLCE_MARKER && slce_count > 0)
{ psf_log_printf (psf, " SLCE count : %d\n", slce_count) ;
slce_count = 0 ;
}
switch (marker)
{ case GLOB_MARKER:
psf_binheader_readf (psf, "E4", &length) ;
psf_log_printf (psf, " %D : %d\n", marker, length) ;
psf_binheader_readf (psf, "j", length) ;
break ;
case RECY_MARKER:
psf_binheader_readf (psf, "E4", &length) ;
psf_log_printf (psf, " %D : %d\n", marker, length) ;
psf_binheader_readf (psf, "j", (length+1) & 0xFFFFFFFE) ; /* ?????? */
break ;
case CAT_MARKER:
psf_binheader_readf (psf, "E4", &length) ;
psf_log_printf (psf, " %D : %d\n", marker, length) ;
/*-psf_binheader_readf (psf, "j", length) ;-*/
break ;
case DEVL_MARKER:
psf_binheader_readf (psf, "mE4", &marker, &length) ;
psf_log_printf (psf, " DEVL%D : %d\n", marker, length) ;
if (length & 1)
length ++ ;
psf_binheader_readf (psf, "j", length) ;
break ;
case EQ_MARKER:
case COMP_MARKER:
psf_binheader_readf (psf, "E4", &length) ;
psf_log_printf (psf, " %D : %d\n", marker, length) ;
/* This is weird!!!! why make this (length - 1) */
if (length & 1)
length ++ ;
psf_binheader_readf (psf, "j", length) ;
break ;
case SLCL_MARKER:
psf_log_printf (psf, " %D\n", marker) ;
slce_count = 0 ;
break ;
case SLCE_MARKER:
/*-psf_log_printf (psf, " %D\n", marker) ;-*/
psf_binheader_readf (psf, "E4", &length) ;
/*-psf_log_printf (psf, " ???????? : 0x%X\n", length) ;-*/
psf_binheader_readf (psf, "E4", &length) ;
/*-psf_log_printf (psf, " Start ? : %d\n", length) ;-*/
psf_binheader_readf (psf, "E4", &length) ;
/*-psf_log_printf (psf, " Length ? : %d\n", length) ;-*/
slce_total += length ;
psf_binheader_readf (psf, "E4", &length) ;
/*-psf_log_printf (psf, " ???????? : 0x%X\n", length) ;-*/
slce_count ++ ;
break ;
case SINF_MARKER:
psf_binheader_readf (psf, "E4", &length) ;
psf_log_printf (psf, " %D : %d\n", marker, length) ;
psf_binheader_readf (psf, "E2", &length) ;
psf_log_printf (psf, " REX Version : %X ?\n", length) ;
psf_binheader_readf (psf, "E44", &psf->sf.samplerate, &psf->sf.samples) ;
psf_log_printf (psf, " Sample Rate : %d\n", psf->sf.samplerate) ;
psf_log_printf (psf, " Samples : %d\n", psf->sf.samples) ;
psf_binheader_readf (psf, "E4", &length) ;
psf_log_printf (psf, " ??????????? : %d\n", length) ;
psf_binheader_readf (psf, "E4", &length) ;
psf_log_printf (psf, " ??????????? : %d\n", length) ;
break ;
case SDAT_MARKER:
psf_binheader_readf (psf, "E4", &length) ;
sdat_length = length ;
/* Get the current offset. */
psf->dataoffset = psf_binheader_readf (psf, NULL) ;
if (psf->dataoffset + length != psf->filelength)
psf_log_printf (psf, " %D : %d (should be %d)\n", marker, length, psf->dataoffset + psf->filelength) ;
else
psf_log_printf (psf, " %D : %d\n", marker, length) ;
break ;
default :
psf_log_printf (psf, "Unknown marker : 0x%X %D", marker, marker) ;
return -1003 ;
break ;
} ;
/* SDAT always last marker in file. */
if (marker == SDAT_MARKER)
break ;
} ;
puts (psf->logbuffer) ;
puts ("-----------------------------------") ;
printf ("SDAT length : %d\n", sdat_length) ;
printf ("SLCE samples : %d\n", slce_total) ;
/* Two bytes per sample. */
printf ("Comp Ratio : %f:1\n", (2.0 * slce_total) / sdat_length) ;
puts (" ") ;
psf->logbuffer [0] = 0 ;
/* OK, have the header althought not too sure what it all means. */
psf->endian = SF_ENDIAN_BIG ;
psf->datalength = psf->filelength - psf->dataoffset ;
if (psf_fseek (psf->filedes, psf->dataoffset, SEEK_SET))
return SFE_BAD_SEEK ;
psf->sf.format = (SF_FORMAT_REX2 | SF_FORMAT_DWVW_12) ;
psf->sf.channels = 1 ;
psf->bytewidth = 2 ;
psf->blockwidth = psf->sf.channels * psf->bytewidth ;
if ((error = dwvw_init (psf, 16)))
return error ;
psf->close = rx2_close ;
if (! psf->sf.samples && psf->blockwidth)
psf->sf.samples = psf->datalength / psf->blockwidth ;
/* All done. */
return 0 ;
} /* rx2_open */
/*------------------------------------------------------------------------------
*/
static int
rx2_close (SF_PRIVATE *psf)
{
if (psf->mode == SFM_WRITE)
{ /* Now we know for certain the length of the file we can re-write
** correct values for the FORM, 8SVX and BODY chunks.
*/
} ;
if (psf->fdata)
free (psf->fdata) ;
psf->fdata = NULL ;
return 0 ;
} /* rx2_close */