1 /*
2 ** Copyright (C) 2008-2016 Erik de Castro Lopo <erikd@mega-nerd.com>
3 **
4 ** All rights reserved.
5 **
6 ** Redistribution and use in source and binary forms, with or without
7 ** modification, are permitted provided that the following conditions are
8 ** met:
9 **
10 ** * Redistributions of source code must retain the above copyright
11 ** notice, this list of conditions and the following disclaimer.
12 ** * Redistributions in binary form must reproduce the above copyright
13 ** notice, this list of conditions and the following disclaimer in
14 ** the documentation and/or other materials provided with the
15 ** distribution.
16 ** * Neither the author nor the names of any contributors may be used
17 ** to endorse or promote products derived from this software without
18 ** specific prior written permission.
19 **
20 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 ** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 ** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 ** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 ** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 ** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
30 ** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <ctype.h>
37 #include <float.h>
38
39 #include <sndfile.h>
40
41 #define BLOCK_SIZE 4096
42
43 #ifdef DBL_DECIMAL_DIG
44 #define OP_DBL_Digs (DBL_DECIMAL_DIG)
45 #else
46 #ifdef DECIMAL_DIG
47 #define OP_DBL_Digs (DECIMAL_DIG)
48 #else
49 #define OP_DBL_Digs (DBL_DIG + 3)
50 #endif
51 #endif
52
53 static void
print_usage(char * progname)54 print_usage (char *progname)
55 { printf ("\nUsage : %s [--full-precision] <input file> <output file>\n", progname) ;
56 puts ("\n"
57 " Where the output file will contain a line for each frame\n"
58 " and a column for each channel.\n"
59 ) ;
60
61 } /* print_usage */
62
63 static void
convert_to_text(SNDFILE * infile,FILE * outfile,int channels,int full_precision)64 convert_to_text (SNDFILE * infile, FILE * outfile, int channels, int full_precision)
65 { float buf [BLOCK_SIZE] ;
66 sf_count_t frames ;
67 int k, m, readcount ;
68
69 frames = BLOCK_SIZE / channels ;
70
71 while ((readcount = sf_readf_float (infile, buf, frames)) > 0)
72 { for (k = 0 ; k < readcount ; k++)
73 { for (m = 0 ; m < channels ; m++)
74 if (full_precision)
75 fprintf (outfile, " %.*e", OP_DBL_Digs - 1, buf [k * channels + m]) ;
76 else
77 fprintf (outfile, " % 12.10f", buf [k * channels + m]) ;
78 fprintf (outfile, "\n") ;
79 } ;
80 } ;
81
82 return ;
83 } /* convert_to_text */
84
85 int
main(int argc,char * argv[])86 main (int argc, char * argv [])
87 { char *progname, *infilename, *outfilename ;
88 SNDFILE *infile = NULL ;
89 FILE *outfile = NULL ;
90 SF_INFO sfinfo ;
91 int full_precision = 0 ;
92
93 progname = strrchr (argv [0], '/') ;
94 progname = progname ? progname + 1 : argv [0] ;
95
96 switch (argc)
97 { case 4 :
98 if (!strcmp ("--full-precision", argv [3]))
99 { print_usage (progname) ;
100 return 1 ;
101 } ;
102 full_precision = 1 ;
103 argv++ ;
104 case 3 :
105 break ;
106 default:
107 print_usage (progname) ;
108 return 1 ;
109 } ;
110
111 infilename = argv [1] ;
112 outfilename = argv [2] ;
113
114 if (strcmp (infilename, outfilename) == 0)
115 { printf ("Error : Input and output filenames are the same.\n\n") ;
116 print_usage (progname) ;
117 return 1 ;
118 } ;
119
120 if (infilename [0] == '-')
121 { printf ("Error : Input filename (%s) looks like an option.\n\n", infilename) ;
122 print_usage (progname) ;
123 return 1 ;
124 } ;
125
126 if (outfilename [0] == '-')
127 { printf ("Error : Output filename (%s) looks like an option.\n\n", outfilename) ;
128 print_usage (progname) ;
129 return 1 ;
130 } ;
131
132 memset (&sfinfo, 0, sizeof (sfinfo)) ;
133
134 if ((infile = sf_open (infilename, SFM_READ, &sfinfo)) == NULL)
135 { printf ("Not able to open input file %s.\n", infilename) ;
136 puts (sf_strerror (NULL)) ;
137 return 1 ;
138 } ;
139
140 /* Open the output file. */
141 if ((outfile = fopen (outfilename, "w")) == NULL)
142 { printf ("Not able to open output file %s : %s\n", outfilename, sf_strerror (NULL)) ;
143 return 1 ;
144 } ;
145
146 fprintf (outfile, "# Converted from file %s.\n", infilename) ;
147 fprintf (outfile, "# Channels %d, Sample rate %d\n", sfinfo.channels, sfinfo.samplerate) ;
148
149 convert_to_text (infile, outfile, sfinfo.channels, full_precision) ;
150
151 sf_close (infile) ;
152 fclose (outfile) ;
153
154 return 0 ;
155 } /* main */
156
157