1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
** Copyright (C) 2008-2014 Erik de Castro Lopo <erikd@mega-nerd.com>
** Copyright (C) 2008 Conrad Parker <conrad@metadecks.org>
**
** 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 "sfconfig.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <sndfile.h>
#include "common.h"
/* Length of comparison data buffers in units of items */
#define BUFLEN 65536
static const char * progname = NULL ;
static char * filename1 = NULL, * filename2 = NULL ;
static int
comparison_error (const char * what, sf_count_t frame_offset)
{ char buffer [128] = "" ;
if (frame_offset >= 0)
snprintf (buffer, sizeof (buffer), " (at frame offset %" PRId64 ")", frame_offset) ;
printf ("%s: %s of files %s and %s differ%s.\n", progname, what, filename1, filename2, buffer) ;
return 1 ;
} /* comparison_error */
static int
compare (void)
{
double buf1 [BUFLEN], buf2 [BUFLEN] ;
SF_INFO sfinfo1, sfinfo2 ;
SNDFILE * sf1 = NULL, * sf2 = NULL ;
sf_count_t items, i, nread1, nread2, offset = 0 ;
int retval = 0 ;
memset (&sfinfo1, 0, sizeof (SF_INFO)) ;
sf1 = sf_open (filename1, SFM_READ, &sfinfo1) ;
if (sf1 == NULL)
{ printf ("Error opening %s.\n", filename1) ;
retval = 1 ;
goto out ;
} ;
memset (&sfinfo2, 0, sizeof (SF_INFO)) ;
sf2 = sf_open (filename2, SFM_READ, &sfinfo2) ;
if (sf2 == NULL)
{ printf ("Error opening %s.\n", filename2) ;
retval = 1 ;
goto out ;
} ;
if (sfinfo1.samplerate != sfinfo2.samplerate)
{ retval = comparison_error ("Samplerates", -1) ;
goto out ;
} ;
if (sfinfo1.channels != sfinfo2.channels)
{ retval = comparison_error ("Number of channels", -1) ;
goto out ;
} ;
/* Calculate the framecount that will fit in our data buffers */
items = BUFLEN / sfinfo1.channels ;
while ((nread1 = sf_readf_double (sf1, buf1, items)) > 0)
{ nread2 = sf_readf_double (sf2, buf2, nread1) ;
if (nread2 != nread1)
{ retval = comparison_error ("PCM data lengths", -1) ;
goto out ;
} ;
for (i = 0 ; i < nread1 * sfinfo1.channels ; i++)
{ if (buf1 [i] != buf2 [i])
{ retval = comparison_error ("PCM data", offset + i / sfinfo1.channels) ;
goto out ;
} ;
} ;
offset += nread1 ;
} ;
if ((nread2 = sf_readf_double (sf2, buf2, items)) != 0)
{ retval = comparison_error ("PCM data lengths", -1) ;
goto out ;
} ;
out :
sf_close (sf1) ;
sf_close (sf2) ;
return retval ;
} /* compare */
static void
usage_exit (void)
{
printf ("Usage : %s <filename> <filename>\n", progname) ;
printf (" Compare the PCM data of two sound files.\n\n") ;
printf ("Using %s.\n\n", sf_version_string ()) ;
exit (1) ;
} /* usage_exit */
int
main (int argc, char *argv [])
{
progname = program_name (argv [0]) ;
if (argc != 3)
usage_exit () ;
filename1 = argv [argc - 2] ;
filename2 = argv [argc - 1] ;
if (strcmp (filename1, filename2) == 0)
{ printf ("Error : Input filenames are the same.\n\n") ;
usage_exit () ;
} ;
return compare () ;
} /* main */
|
