160 lines
4.2 KiB
C
160 lines
4.2 KiB
C
/*
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** Copyright (C) 2008-2009 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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**
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the author nor the names of any contributors may be used
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** to endorse or promote products derived from this software without
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** specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* sndfile-cmp.c
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* Conrad Parker 2008
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*/
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#include "sfconfig.h"
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#include <stdio.h>
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#include <string.h>
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#include <sndfile.h>
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/* Length of comparison data buffers in units of items */
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#define BUFLEN 65536
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static char * progname ;
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static char * filename1, * filename2 ;
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static int
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comparison_error (const char * what)
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{ printf ("%s: %s of files %s and %s differ\n", progname, what, filename1, filename2) ;
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return 1 ;
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} /* comparison_error */
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static int
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compare (void)
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{
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double buf1 [BUFLEN], buf2 [BUFLEN] ;
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SF_INFO sfinfo1, sfinfo2 ;
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SNDFILE * sf1 = NULL, * sf2 = NULL ;
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sf_count_t len, i, nread1, nread2 ;
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int retval = 0 ;
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memset (&sfinfo1, 0, sizeof (SF_INFO)) ;
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sf1 = sf_open (filename1, SFM_READ, &sfinfo1) ;
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if (sf1 == NULL)
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{ printf ("Error opening %s.\n", filename1) ;
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retval = 1 ;
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goto out ;
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} ;
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memset (&sfinfo2, 0, sizeof (SF_INFO)) ;
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sf2 = sf_open (filename2, SFM_READ, &sfinfo2) ;
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if (sf2 == NULL)
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{ printf ("Error opening %s.\n", filename2) ;
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retval = 1 ;
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goto out ;
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} ;
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if (sfinfo1.samplerate != sfinfo2.samplerate)
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{ retval = comparison_error ("Samplerates") ;
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goto out ;
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} ;
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if (sfinfo1.channels != sfinfo2.channels)
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{ retval = comparison_error ("Number of channels") ;
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goto out ;
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} ;
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/* Calculate the framecount that will fit in our data buffers */
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len = BUFLEN / sfinfo1.channels ;
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while ( (nread1 = sf_readf_double (sf1, buf1, len)) > 0)
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{ nread2 = sf_readf_double (sf2, buf2, nread1) ;
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if (nread2 != nread1)
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{ retval = comparison_error ("PCM data lengths") ;
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goto out ;
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} ;
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for (i = 0 ; i < nread1 ; i++)
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{ if (buf1 [i] != buf2 [i])
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{ retval = comparison_error ("PCM data") ;
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goto out ;
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} ;
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} ;
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} ;
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if ( (nread2 = sf_readf_double (sf2, buf2, nread1)) != 0)
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{ retval = comparison_error ("PCM data lengths") ;
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goto out ;
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} ;
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out :
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sf_close (sf1) ;
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sf_close (sf2) ;
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return retval ;
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} /* compare */
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static void
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print_version (void)
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{ char buffer [256] ;
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sf_command (NULL, SFC_GET_LIB_VERSION, buffer, sizeof (buffer)) ;
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printf ("\nVersion : %s\n\n", buffer) ;
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} /* print_version */
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static void
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print_usage (void)
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{
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print_version () ;
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printf ("Usage : %s <filename> <filename>\n", progname) ;
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printf (" Compare the PCM data of two sound files.\n\n") ;
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} /* print_usage */
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int
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main (int argc, char *argv [])
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{
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progname = strrchr (argv [0], '/') ;
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progname = progname ? progname + 1 : argv [0] ;
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if (argc != 3)
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{ print_usage () ;
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return 1 ;
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} ;
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filename1 = argv [argc - 2] ;
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filename2 = argv [argc - 1] ;
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if (strcmp (filename1, filename2) == 0)
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{ printf ("Error : Input filenames are the same.\n\n") ;
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print_usage () ;
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return 1 ;
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} ;
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return compare () ;
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} /* main */
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