blob: bf7e18791be14ce5968690377f3714e48060599d (
plain)
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
|
#include <stdio.h>
#include <math.h>
#include <mossrose.h>
#include <portaudio.h>
#define PI 3.14159
#define SAMPLE_RATE 44100
#define N_CHANNELS 8
float f(float t)
{
const int f0 = 440;
const int f1 = 880;
return ( t*f1 ) + ( (1-t)*f0 );
}
void callback(int chan, void *d)
{
bool *loop = d;
*loop = false;
printf("channel %d waves goodnight!\n", chan);
}
int main()
{
float data[SAMPLE_RATE];
for (long i=0; i<SAMPLE_RATE; i++) {
float time = ((float)i)/SAMPLE_RATE;
data[i] = sin(2*PI*f(time)*time);
}
struct mossrose_sound_t sound = {
.left = data, .right = NULL, .mono = true, .len = SAMPLE_RATE
};
int err = mossrose_init(SAMPLE_RATE, N_CHANNELS, true);
if (err != 0)
fprintf(stderr, "FAILED TO INITIALIZE MOSSROSE\n");
int chan = mossrose_play(&sound, -1, 1);
bool loop = true;
mossrose_channel_set_callback(chan, callback, &loop);
while(loop) {
mossrose_poll_callbacks();
}
mossrose_terminate();
return 0;
}
|
