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
|
use super::{
FactoryParameters, GenBox, GenFactoryError, Generator, GeneratorFactory, Parameters, Rate,
SampleBuffer,
};
use std::mem;
use ::rand::{Rng, SeedableRng, XorShiftRng};
#[derive(Debug)]
pub struct Noise {
pub rng: XorShiftRng,
pub buf: SampleBuffer,
}
impl Generator for Noise {
fn eval<'a>(&'a mut self, _params: &Parameters) -> &'a SampleBuffer {
self.buf.rate = Rate::Sample;
for i in 0..self.buf.len() {
self.buf[i] = self.rng.next_f32();
}
&self.buf
}
fn buffer(&self) -> &SampleBuffer {
&self.buf
}
fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
mem::replace(&mut self.buf, buf)
}
}
pub struct NoiseFactory;
impl GeneratorFactory for NoiseFactory {
fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
Ok(Box::new(Noise {
rng: XorShiftRng::from_seed(::rand::random()),
buf: SampleBuffer::new(params.env.default_buffer_size),
}))
}
}
pub static Factory: NoiseFactory = NoiseFactory;
|
