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Remove unnecessary asio_utils mod

This commit is contained in:
mitchmindtree 2019-06-29 03:44:51 +10:00
parent 50aa0585be
commit dc6c5c5a7c
3 changed files with 0 additions and 141 deletions
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51
src/host/asio/asio_utils/mod.rs
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@ -1,51 +0,0 @@
#[cfg(test)]
mod tests;
use std::marker::Copy;
/// Interleave the buffer from asio to cpal
/// asio: LLLLRRRR
/// cpal: LRLRLRLR
/// More then stereo:
/// asio: 111122223333
/// cpal: 123123123123
/// cpal buffer must have a length of exactly sum( all asio channel lengths )
/// this check is ommited for performance
pub fn interleave<T>(channels: &[Vec<T>], target: &mut Vec<T>)
where
T: Copy,
{
assert!(
target.len() % channels.len() == 0,
"the length of the interleaved buffer must be a multiple of the expected number of channels"
);
assert!(!channels.is_empty());
target.clear();
let frames = channels[0].len();
target.extend((0 .. frames).flat_map(|f| channels.iter().map(move |ch| ch[f])));
}
/// Function for deinterleaving because
/// cpal writes to buffer interleaved
/// cpal: LRLRLRLR
/// asio: LLLLRRRR
/// More then stereo:
/// cpal: 123123123123
/// asio: 111122223333
pub fn deinterleave<T>(cpal_buffer: &[T], asio_channels: &mut [Vec<T>])
where
T: Copy,
{
assert!(
cpal_buffer.len() % asio_channels.len() == 0,
"the length of the interleaved buffer must be a multiple of the expected number of channels"
);
for ch in asio_channels.iter_mut() {
ch.clear();
}
let num_channels = asio_channels.len();
let mut ch = (0 .. num_channels).cycle();
for &sample in cpal_buffer.iter() {
asio_channels[ch.next().unwrap()].push(sample);
}
}

89
src/host/asio/asio_utils/tests.rs
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@ -1,89 +0,0 @@
use super::{deinterleave, interleave};
#[test]
fn interleave_two() {
let a = vec![vec![1, 1, 1, 1], vec![2, 2, 2, 2]];
let goal = vec![1, 2, 1, 2, 1, 2, 1, 2];
let mut result = vec![0; 8];
interleave(&a[..], &mut result);
assert_eq!(goal, result);
}
#[test]
fn interleave_three() {
let a = vec![vec![1, 1, 1, 1], vec![2, 2, 2, 2], vec![3, 3, 3, 3]];
let goal = vec![1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3];
let mut result = vec![0; 12];
interleave(&a[..], &mut result);
assert_eq!(goal, result);
}
#[test]
fn interleave_none() {
let a = vec![Vec::<i32>::new()];
let goal = Vec::<i32>::new();
let mut result = Vec::<i32>::new();
interleave(&a[..], &mut result);
assert_eq!(goal, result);
}
#[test]
fn interleave_two_diff() {
let a = vec![vec![1, 2, 3, 4], vec![5, 6, 7, 8]];
let goal = vec![1, 5, 2, 6, 3, 7, 4, 8];
let mut result = vec![0; 8];
interleave(&a[..], &mut result);
assert_eq!(goal, result);
}
#[test]
fn deinterleave_two() {
let goal = vec![vec![1, 1, 1, 1], vec![2, 2, 2, 2]];
let a = vec![1, 2, 1, 2, 1, 2, 1, 2];
let mut result = vec![vec![0; 4]; 2];
deinterleave(&a[..], &mut result[..]);
assert_eq!(goal, result);
}
#[test]
fn deinterleave_three() {
let goal = vec![vec![1, 1, 1, 1], vec![2, 2, 2, 2], vec![3, 3, 3, 3]];
let a = vec![1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3];
let mut result = vec![vec![0; 4]; 3];
deinterleave(&a[..], &mut result[..]);
assert_eq!(goal, result);
}
#[test]
fn deinterleave_none() {
let goal = vec![Vec::<i32>::new()];
let a = Vec::<i32>::new();
let mut result = vec![Vec::<i32>::new()];
deinterleave(&a[..], &mut result[..]);
assert_eq!(goal, result);
}
#[test]
fn deinterleave_two_diff() {
let goal = vec![vec![1, 2, 3, 4], vec![5, 6, 7, 8]];
let a = vec![1, 5, 2, 6, 3, 7, 4, 8];
let mut result = vec![vec![0; 4]; 2];
deinterleave(&a[..], &mut result[..]);
assert_eq!(goal, result);
}

1
src/host/asio/mod.rs
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@ -22,7 +22,6 @@ use std::sync::Arc;
mod device;
mod stream;
mod asio_utils;
/// The host for ASIO.
#[derive(Debug)]