geng_rodio/source/
empty.rs

1use std::marker::PhantomData;
2use std::time::Duration;
3
4use crate::{Sample, Source};
5
6/// An empty source.
7#[derive(Debug, Copy, Clone)]
8pub struct Empty<S>(PhantomData<S>);
9
10impl<S> Default for Empty<S> {
11    #[inline]
12    fn default() -> Self {
13        Self::new()
14    }
15}
16
17impl<S> Empty<S> {
18    #[inline]
19    pub fn new() -> Empty<S> {
20        Empty(PhantomData)
21    }
22}
23
24impl<S> Iterator for Empty<S> {
25    type Item = S;
26
27    #[inline]
28    fn next(&mut self) -> Option<S> {
29        None
30    }
31}
32
33impl<S> Source for Empty<S>
34where
35    S: Sample,
36{
37    #[inline]
38    fn current_frame_len(&self) -> Option<usize> {
39        None
40    }
41
42    #[inline]
43    fn channels(&self) -> u16 {
44        1
45    }
46
47    #[inline]
48    fn sample_rate(&self) -> u32 {
49        48000
50    }
51
52    #[inline]
53    fn total_duration(&self) -> Option<Duration> {
54        Some(Duration::new(0, 0))
55    }
56}
geng_rodio/source/empty.rs

geng_rodio/source/
empty.rs
