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/*
** Copyright (C) 2008-2016 Erik de Castro Lopo <erikd@mega-nerd.com>
**
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the author nor the names of any contributors may be used
** to endorse or promote products derived from this software without
** specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <float.h>
#include <sndfile.h>
#define BLOCK_SIZE 4096
#ifdef DBL_DECIMAL_DIG
#define OP_DBL_Digs (DBL_DECIMAL_DIG)
#else
#ifdef DECIMAL_DIG
#define OP_DBL_Digs (DECIMAL_DIG)
#else
#define OP_DBL_Digs (DBL_DIG + 3)
#endif
#endif
static void
print_usage (char *progname)
{ printf ("\nUsage : %s [--full-precision] <input file> <output file>\n", progname) ;
puts ("\n"
" Where the output file will contain a line for each frame\n"
" and a column for each channel.\n"
) ;
} /* print_usage */
static int
convert_to_text (SNDFILE * infile, FILE * outfile, int channels, int full_precision)
{ float *buf ;
sf_count_t frames ;
int k, m, readcount ;
buf = malloc (BLOCK_SIZE * sizeof (float)) ;
if (buf == NULL)
{ printf ("Error : Out of memory.\n\n") ;
return 1 ;
} ;
frames = BLOCK_SIZE / channels ;
while ((readcount = (int) sf_readf_float (infile, buf, frames)) > 0)
{ for (k = 0 ; k < readcount ; k++)
{ for (m = 0 ; m < channels ; m++)
if (full_precision)
fprintf (outfile, " %.*e", OP_DBL_Digs - 1, buf [k * channels + m]) ;
else
fprintf (outfile, " % 12.10f", buf [k * channels + m]) ;
fprintf (outfile, "\n") ;
} ;
} ;
free (buf) ;
return 0 ;
} /* convert_to_text */
int
main (int argc, char * argv [])
{ char *progname, *infilename, *outfilename ;
SNDFILE *infile = NULL ;
FILE *outfile = NULL ;
SF_INFO sfinfo ;
int full_precision = 0 ;
int ret = 1 ;
progname = strrchr (argv [0], '/') ;
progname = progname ? progname + 1 : argv [0] ;
switch (argc)
{ case 4 :
if (!strcmp ("--full-precision", argv [3]))
{ print_usage (progname) ;
goto cleanup ;
} ;
full_precision = 1 ;
argv++ ;
case 3 :
break ;
default:
print_usage (progname) ;
goto cleanup ;
} ;
infilename = argv [1] ;
outfilename = argv [2] ;
if (strcmp (infilename, outfilename) == 0)
{ printf ("Error : Input and output filenames are the same.\n\n") ;
print_usage (progname) ;
goto cleanup ;
} ;
if (infilename [0] == '-')
{ printf ("Error : Input filename (%s) looks like an option.\n\n", infilename) ;
print_usage (progname) ;
goto cleanup ;
} ;
if (outfilename [0] == '-')
{ printf ("Error : Output filename (%s) looks like an option.\n\n", outfilename) ;
print_usage (progname) ;
goto cleanup ;
} ;
memset (&sfinfo, 0, sizeof (sfinfo)) ;
if ((infile = sf_open (infilename, SFM_READ, &sfinfo)) == NULL)
{ printf ("Not able to open input file %s.\n", infilename) ;
puts (sf_strerror (NULL)) ;
goto cleanup ;
} ;
/* Open the output file. */
if ((outfile = fopen (outfilename, "w")) == NULL)
{ printf ("Not able to open output file %s : %s\n", outfilename, sf_strerror (NULL)) ;
goto cleanup ;
} ;
fprintf (outfile, "# Converted from file %s.\n", infilename) ;
fprintf (outfile, "# Channels %d, Sample rate %d\n", sfinfo.channels, sfinfo.samplerate) ;
ret = convert_to_text (infile, outfile, sfinfo.channels, full_precision) ;
cleanup :
sf_close (infile) ;
if (outfile != NULL)
fclose (outfile) ;
return ret ;
} /* main */
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