src/input.rs at main · tsiry-sandratraina.com/tunein-cli

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tunein-cli / src / input.rs

at main 577 B view raw

 1pub type Matrix<T> = Vec<Vec<T>>;
 2
 3/// separate a stream of alternating channels into a matrix of channel streams:
 4///   L R L R L R L R L R
 5/// becomes
 6///   L L L L L
 7///   R R R R R
 8pub fn stream_to_matrix<I, O>(
 9    stream: impl Iterator<Item = I>,
10    channels: usize,
11    norm: O,
12) -> Matrix<O>
13where
14    I: Copy + Into<O>,
15    O: Copy + std::ops::Div<Output = O>,
16{
17    let mut out = vec![vec![]; channels];
18    let mut channel = 0;
19    for sample in stream {
20        out[channel].push(sample.into() / norm);
21        channel = (channel + 1) % channels;
22    }
23    out
24}