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use crate::buf::{Buf, BufMut, Channel, ChannelMut};
use crate::sample::Sample;
pub struct Chunk<B> {
buf: B,
n: usize,
len: usize,
}
impl<B> Chunk<B> {
pub(crate) fn new(buf: B, n: usize, len: usize) -> Self {
Self { buf, n, len }
}
}
impl<B, T> Buf<T> for Chunk<B>
where
B: Buf<T>,
T: Sample,
{
fn frames(&self) -> usize {
self.buf.frames().saturating_sub(self.n * self.len)
}
fn channels(&self) -> usize {
self.buf.channels()
}
fn channel(&self, channel: usize) -> Channel<'_, T> {
self.buf.channel(channel).chunk(self.n, self.len)
}
}
impl<B, T> BufMut<T> for Chunk<B>
where
B: BufMut<T>,
T: Sample,
{
fn resize(&mut self, frames: usize) {
self.buf.resize(frames + self.n * self.len);
}
fn resize_topology(&mut self, channels: usize, frames: usize) {
self.buf
.resize_topology(channels, frames + self.n * self.len);
}
fn channel_mut(&mut self, channel: usize) -> ChannelMut<'_, T> {
self.buf.channel_mut(channel).chunk(self.n, self.len)
}
}