f550d13d4fea6b32606b151ee0932bbe41a224d8
[Faustine.git] / interpretor / libsndfile-1.0.25 / programs / sndfile-cmp.c
1 /*
2 ** Copyright (C) 2008-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
3 ** Copyright (C) 2008 Conrad Parker <conrad@metadecks.org>
4 **
5 ** All rights reserved.
6 **
7 ** Redistribution and use in source and binary forms, with or without
8 ** modification, are permitted provided that the following conditions are
9 ** met:
10 **
11 ** * Redistributions of source code must retain the above copyright
12 ** notice, this list of conditions and the following disclaimer.
13 ** * Redistributions in binary form must reproduce the above copyright
14 ** notice, this list of conditions and the following disclaimer in
15 ** the documentation and/or other materials provided with the
16 ** distribution.
17 ** * Neither the author nor the names of any contributors may be used
18 ** to endorse or promote products derived from this software without
19 ** specific prior written permission.
20 **
21 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 ** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
25 ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26 ** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 ** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
28 ** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 ** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 ** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include "sfconfig.h"
35
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <inttypes.h>
40
41 #include <sndfile.h>
42
43 #include "common.h"
44
45 /* Length of comparison data buffers in units of items */
46 #define BUFLEN 65536
47
48 static const char * progname = NULL ;
49 static char * filename1 = NULL, * filename2 = NULL ;
50
51 static int
52 comparison_error (const char * what, sf_count_t frame_offset)
53 { char buffer [128] = "" ;
54
55 if (frame_offset >= 0)
56 snprintf (buffer, sizeof (buffer), " (at frame offset %" PRId64 ")", frame_offset) ;
57
58 printf ("%s: %s of files %s and %s differ%s.\n", progname, what, filename1, filename2, buffer) ;
59 return 1 ;
60 } /* comparison_error */
61
62 static int
63 compare (void)
64 {
65 double buf1 [BUFLEN], buf2 [BUFLEN] ;
66 SF_INFO sfinfo1, sfinfo2 ;
67 SNDFILE * sf1 = NULL, * sf2 = NULL ;
68 sf_count_t items, i, nread1, nread2, offset = 0 ;
69 int retval = 0 ;
70
71 memset (&sfinfo1, 0, sizeof (SF_INFO)) ;
72 sf1 = sf_open (filename1, SFM_READ, &sfinfo1) ;
73 if (sf1 == NULL)
74 { printf ("Error opening %s.\n", filename1) ;
75 retval = 1 ;
76 goto out ;
77 } ;
78
79 memset (&sfinfo2, 0, sizeof (SF_INFO)) ;
80 sf2 = sf_open (filename2, SFM_READ, &sfinfo2) ;
81 if (sf2 == NULL)
82 { printf ("Error opening %s.\n", filename2) ;
83 retval = 1 ;
84 goto out ;
85 } ;
86
87 if (sfinfo1.samplerate != sfinfo2.samplerate)
88 { retval = comparison_error ("Samplerates", -1) ;
89 goto out ;
90 } ;
91
92 if (sfinfo1.channels != sfinfo2.channels)
93 { retval = comparison_error ("Number of channels", -1) ;
94 goto out ;
95 } ;
96
97 /* Calculate the framecount that will fit in our data buffers */
98 items = BUFLEN / sfinfo1.channels ;
99
100 while ( (nread1 = sf_readf_double (sf1, buf1, items)) > 0)
101 { nread2 = sf_readf_double (sf2, buf2, nread1) ;
102 if (nread2 != nread1)
103 { retval = comparison_error ("PCM data lengths", -1) ;
104 goto out ;
105 } ;
106 for (i = 0 ; i < nread1 * sfinfo1.channels ; i++)
107 { if (buf1 [i] != buf2 [i])
108 { retval = comparison_error ("PCM data", offset + i / sfinfo1.channels) ;
109 goto out ;
110 } ;
111 } ;
112 offset += nread1 ;
113 } ;
114
115 if ( (nread2 = sf_readf_double (sf2, buf2, nread1)) != 0)
116 { retval = comparison_error ("PCM data lengths", -1) ;
117 goto out ;
118 } ;
119
120 out :
121 sf_close (sf1) ;
122 sf_close (sf2) ;
123
124 return retval ;
125 } /* compare */
126
127 static void
128 print_version (void)
129 { char buffer [256] ;
130
131 sf_command (NULL, SFC_GET_LIB_VERSION, buffer, sizeof (buffer)) ;
132 printf ("\nVersion : %s\n\n", buffer) ;
133 } /* print_version */
134
135 static void
136 usage_exit (void)
137 {
138 print_version () ;
139
140 printf ("Usage : %s <filename> <filename>\n", progname) ;
141 printf (" Compare the PCM data of two sound files.\n\n") ;
142 exit (0) ;
143 } /* usage_exit */
144
145 int
146 main (int argc, char *argv [])
147 {
148 progname = program_name (argv [0]) ;
149
150 if (argc != 3)
151 { usage_exit () ;
152 return 1 ;
153 } ;
154
155 filename1 = argv [argc - 2] ;
156 filename2 = argv [argc - 1] ;
157
158 if (strcmp (filename1, filename2) == 0)
159 { printf ("Error : Input filenames are the same.\n\n") ;
160 usage_exit () ;
161 return 1 ;
162 } ;
163
164 return compare () ;
165 } /* main */