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
|
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <mysofa.h>
int main(int argc, char **argv)
{
struct MYSOFA_HRTF *hrtf;
int sample_rate;
int err, i, j;
if (argc < 3) {
printf("usage: %s input_SOFA_file output_directory\n", argv[0]);
return 1;
}
hrtf = mysofa_load(argv[1], &err);
if (!hrtf || err) {
printf("invalid input SOFA file: %s\n", argv[1]);
return 1;
}
if (hrtf->DataSamplingRate.elements != 1)
goto fail;
sample_rate = hrtf->DataSamplingRate.values[0];
err = mkdir(argv[2], 0744);
if (err)
goto fail;
err = chdir(argv[2]);
if (err)
goto fail;
for (i = 0; i < hrtf->M; i++) {
FILE *file;
int bps = 32;
int blkalign = 8;
int bytespersec = blkalign * sample_rate;
char filename[1024];
int azi = hrtf->SourcePosition.values[i * 3];
int ele = hrtf->SourcePosition.values[i * 3 + 1];
int dis = hrtf->SourcePosition.values[i * 3 + 2];
int size = 8 * hrtf->N;
int offset = i * 2 * hrtf->N;
snprintf(filename, sizeof(filename), "azi_%d_ele_%d_dis_%d.wav", azi, ele, dis);
file = fopen(filename, "w+");
fwrite("RIFF", 4, 1, file);
fwrite("\xFF\xFF\xFF\xFF", 4, 1, file);
fwrite("WAVE", 4, 1, file);
fwrite("fmt ", 4, 1, file);
fwrite("\x10\x00\00\00", 4, 1, file);
fwrite("\x03\x00", 2, 1, file);
fwrite("\x02\x00", 2, 1, file);
fwrite(&sample_rate, 4, 1, file);
fwrite(&bytespersec, 4, 1, file);
fwrite(&blkalign, 2, 1, file);
fwrite(&bps, 2, 1, file);
fwrite("data", 4, 1, file);
fwrite(&size, 4, 1, file);
for (j = 0; j < hrtf->N; j++) {
float l, r;
l = hrtf->DataIR.values[offset + j];
r = hrtf->DataIR.values[offset + j + hrtf->N];
fwrite(&l, 4, 1, file);
fwrite(&r, 4, 1, file);
}
fclose(file);
}
fail:
mysofa_free(hrtf);
return 0;
}
|
