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
|
/*
** Copyright (C) 2001-2015 Erik de Castro Lopo <erikd@mega-nerd.com>
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "sfconfig.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <string.h>
#include <time.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#else
#include "sf_unistd.h"
#endif
#include <math.h>
#include <sndfile.h>
#include "utils.h"
#define BUFFER_LEN (1 << 10)
#define LOG_BUFFER_SIZE 1024
static void channel_test (void) ;
static double max_diff (const float *a, const float *b, unsigned int len, unsigned int * position) ;
int
main (void) // int argc, char *argv [])
{ channel_test () ;
return 0 ;
} /* main */
/*============================================================================================
** Here are the test functions.
*/
static void
channel_test (void)
{ static float float_data [1024] ;
static float read_float [1024] ;
static int read_int [1024] ;
static short read_short [1024] ;
unsigned int ch, k, position = 0 ;
gen_windowed_sine_float (float_data, ARRAY_LEN (float_data), 0.9) ;
for (ch = 1 ; ch <= 8 ; ch++)
{ SNDFILE *file ;
SF_INFO wsfinfo, rsfinfo ;
sf_count_t wframes = ARRAY_LEN (float_data) / ch ;
double maxdiff ;
char filename [256] ;
snprintf (filename, sizeof (filename), "chan_%d.wav", ch) ;
print_test_name (__func__, filename) ;
sf_info_setup (&wsfinfo, SF_FORMAT_WAV | SF_FORMAT_FLOAT, 48000, ch) ;
sf_info_clear (&rsfinfo) ;
/* Write the test file. */
file = test_open_file_or_die (filename, SFM_WRITE, &wsfinfo, SF_FALSE, __LINE__) ;
test_writef_float_or_die (file, 0, float_data, wframes, __LINE__) ;
sf_close (file) ;
/* Read it as float and test. */
file = test_open_file_or_die (filename, SFM_READ, &rsfinfo, SF_FALSE, __LINE__) ;
exit_if_true (rsfinfo.frames == 0,
"\n\nLine %d : Frames in file %" PRId64 ".\n\n", __LINE__, rsfinfo.frames) ;
exit_if_true (wframes != rsfinfo.frames,
"\n\nLine %d : Wrote %" PRId64 ", read %" PRId64 " frames.\n\n", __LINE__, wframes, rsfinfo.frames) ;
sf_command (file, SFC_SET_SCALE_FLOAT_INT_READ, NULL, SF_TRUE) ;
test_readf_float_or_die (file, 0, read_float, rsfinfo.frames, __LINE__) ;
compare_float_or_die (float_data, read_float, ch * rsfinfo.frames, __LINE__) ;
/* Read it as short and test. */
test_seek_or_die (file, 0, SEEK_SET, 0, ch, __LINE__) ;
test_readf_short_or_die (file, 0, read_short, rsfinfo.frames, __LINE__) ;
for (k = 0 ; k < ARRAY_LEN (read_float) ; k++)
read_float [k] = read_short [k] * (0.9 / 0x8000) ;
maxdiff = max_diff (float_data, read_float, ch * rsfinfo.frames, &position) ;
exit_if_true (maxdiff > 0.5, "\n\nLine %d : Max diff is %f at index %u\n\n", __LINE__, maxdiff, position) ;
/* Read it as int and test. */
test_seek_or_die (file, 0, SEEK_SET, 0, ch, __LINE__) ;
test_readf_int_or_die (file, 0, read_int, rsfinfo.frames, __LINE__) ;
for (k = 0 ; k < ARRAY_LEN (read_float) ; k++)
read_float [k] = read_int [k] * (0.9 / 0x80000000) ;
maxdiff = max_diff (float_data, read_float, ch * rsfinfo.frames, &position) ;
exit_if_true (maxdiff > 0.5, "\n\nLine %d : Max diff is %f at index %u\n\n", __LINE__, maxdiff, position) ;
sf_close (file) ;
unlink (filename) ;
printf ("ok\n") ;
} ;
return ;
} /* channel_test */
static double
max_diff (const float *a, const float *b, unsigned int len, unsigned int * position)
{ double mdiff = 0.0, diff ;
unsigned int k ;
for (k = 0 ; k < len ; k++)
{ diff = fabs (a [k] - b [k]) ;
if (diff > mdiff)
{ mdiff = diff ;
*position = k ;
} ;
} ;
return mdiff ;
} /* max_diff */
|
