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
|
/* See COPYING file for copyright and license details. */
#include <sndfile.h>
#include <string.h>
#include <stdlib.h>
#include "ebur128.h"
int main(int ac, const char* av[]) {
SF_INFO file_info;
SNDFILE* file;
sf_count_t nr_frames_read;
ebur128_state** sts = NULL;
double* buffer;
double loudness;
int i;
if (ac < 2) {
fprintf(stderr, "usage: r128-test FILENAME...\n");
exit(1);
}
sts = malloc((size_t) (ac - 1) * sizeof(ebur128_state*));
for (i = 0; i < ac - 1; ++i) {
memset(&file_info, '\0', sizeof(file_info));
file = sf_open(av[i + 1], SFM_READ, &file_info);
sts[i] = ebur128_init((unsigned) file_info.channels,
(unsigned) file_info.samplerate,
EBUR128_MODE_I);
/* example: set channel map (note: see ebur128.h for the default map) */
if (file_info.channels == 5) {
ebur128_set_channel(sts[i], 0, EBUR128_LEFT);
ebur128_set_channel(sts[i], 1, EBUR128_RIGHT);
ebur128_set_channel(sts[i], 2, EBUR128_CENTER);
ebur128_set_channel(sts[i], 3, EBUR128_LEFT_SURROUND);
ebur128_set_channel(sts[i], 4, EBUR128_RIGHT_SURROUND);
}
buffer = (double*) malloc(sts[i]->samplerate * sts[i]->channels * sizeof(double));
while ((nr_frames_read = sf_readf_double(file, buffer,
(sf_count_t) sts[i]->samplerate))) {
ebur128_add_frames_double(sts[i], buffer, (size_t) nr_frames_read);
}
ebur128_loudness_global(sts[i], &loudness);
fprintf(stderr, "%.2f LUFS, %s\n", loudness, av[i + 1]);
free(buffer);
buffer = NULL;
if (sf_close(file)) {
fprintf(stderr, "Could not close input file!\n");
}
}
ebur128_loudness_global_multiple(sts, (size_t) ac - 1, &loudness);
fprintf(stderr, "-----------\n%.2f LUFS\n", loudness);
/* clean up */
for (i = 0; i < ac - 1; ++i) {
ebur128_destroy(&sts[i]);
}
free(sts);
return 0;
}
|
