sndfile-to-text.c
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上传日期:2022-01-05
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文件大小:4k
- /*
- ** Copyright (C) 2008-2009 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 <sndfile.h>
- #define BLOCK_SIZE 512
- static void
- print_usage (char *progname)
- { printf ("nUsage : %s <input file> <output file>n", progname) ;
- puts ("n"
- " Where the output file will contain a line for each framen"
- " and a column for each channel.n"
- ) ;
- } /* print_usage */
- static void
- convert_to_text (SNDFILE * infile, FILE * outfile, int channels)
- { float buf [channels * BLOCK_SIZE] ;
- int k, m, readcount ;
- while ((readcount = sf_readf_float (infile, buf, BLOCK_SIZE)) > 0)
- { for (k = 0 ; k < readcount ; k++)
- { for (m = 0 ; m < channels ; m++)
- fprintf (outfile, " % 12.10f", buf [k * channels + m]) ;
- fprintf (outfile, "n") ;
- } ;
- } ;
- return ;
- } /* convert_to_text */
- int
- main (int argc, char * argv [])
- { char *progname, *infilename, *outfilename ;
- SNDFILE *infile = NULL ;
- FILE *outfile = NULL ;
- SF_INFO sfinfo ;
- progname = strrchr (argv [0], '/') ;
- progname = progname ? progname + 1 : argv [0] ;
- if (argc != 3)
- { print_usage (progname) ;
- return 1 ;
- } ;
- infilename = argv [1] ;
- outfilename = argv [2] ;
- if (strcmp (infilename, outfilename) == 0)
- { printf ("Error : Input and output filenames are the same.nn") ;
- print_usage (progname) ;
- return 1 ;
- } ;
- if (infilename [0] == '-')
- { printf ("Error : Input filename (%s) looks like an option.nn", infilename) ;
- print_usage (progname) ;
- return 1 ;
- } ;
- if (outfilename [0] == '-')
- { printf ("Error : Output filename (%s) looks like an option.nn", outfilename) ;
- print_usage (progname) ;
- return 1 ;
- } ;
- if ((infile = sf_open (infilename, SFM_READ, &sfinfo)) == NULL)
- { printf ("Not able to open input file %s.n", infilename) ;
- puts (sf_strerror (NULL)) ;
- return 1 ;
- } ;
- /* Open the output file. */
- if ((outfile = fopen (outfilename, "w")) == NULL)
- { printf ("Not able to open output file %s : %sn", outfilename, sf_strerror (NULL)) ;
- return 1 ;
- } ;
- fprintf (outfile, "# Converted from file %s.n", infilename) ;
- fprintf (outfile, "# Channels %d, Sample rate %dn", sfinfo.channels, sfinfo.samplerate) ;
- convert_to_text (infile, outfile, sfinfo.channels) ;
- sf_close (infile) ;
- fclose (outfile) ;
- return 0 ;
- } /* main */