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
|
#include "input/common.h"
#include <string.h>
void reset_output_buffers(struct audio_data *data) {
memset(data->in_bass_r, 0, sizeof(double) * 2 * (data->FFTbassbufferSize / 2 + 1));
memset(data->in_bass_l, 0, sizeof(double) * 2 * (data->FFTbassbufferSize / 2 + 1));
memset(data->in_mid_r, 0, sizeof(double) * 2 * (data->FFTmidbufferSize / 2 + 1));
memset(data->in_mid_l, 0, sizeof(double) * 2 * (data->FFTmidbufferSize / 2 + 1));
memset(data->in_treble_r, 0, sizeof(double) * 2 * (data->FFTtreblebufferSize / 2 + 1));
memset(data->in_treble_l, 0, sizeof(double) * 2 * (data->FFTtreblebufferSize / 2 + 1));
}
int write_to_fftw_input_buffers(int16_t buf[], int16_t frames, void *data) {
struct audio_data *audio = (struct audio_data *)data;
for (uint16_t i = 0; i < frames * 2; i += 2) {
if (audio->channels == 1) {
if (audio->average) {
audio->in_bass_l[audio->bass_index] = (buf[i] + buf[i + 1]) / 2;
}
if (audio->left) {
audio->in_bass_l[audio->bass_index] = buf[i];
}
if (audio->right) {
audio->in_bass_l[audio->bass_index] = buf[i + 1];
}
}
// stereo storing channels in buffer
if (audio->channels == 2) {
audio->in_bass_l[audio->bass_index] = buf[i];
audio->in_bass_r[audio->bass_index] = buf[i + 1];
audio->in_mid_r[audio->mid_index] = audio->in_bass_r[audio->bass_index];
audio->in_treble_r[audio->treble_index] = audio->in_bass_r[audio->bass_index];
}
audio->in_mid_l[audio->mid_index] = audio->in_bass_l[audio->bass_index];
audio->in_treble_l[audio->treble_index] = audio->in_bass_l[audio->bass_index];
audio->bass_index++;
audio->mid_index++;
audio->treble_index++;
if (audio->bass_index == audio->FFTbassbufferSize - 1)
audio->bass_index = 0;
if (audio->mid_index == audio->FFTmidbufferSize - 1)
audio->mid_index = 0;
if (audio->treble_index == audio->FFTtreblebufferSize - 1)
audio->treble_index = 0;
}
return 0;
}
|
