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//! Frame utilities
use std::{mem, slice};
/// A `Frame` is a collection of samples which have a a specific
/// layout represented by `ChannelLayout`
pub trait Frame {}
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
/// A monaural frame.
pub struct MonoFrame<T> {
/// Mono channel
pub m: T,
}
impl<T> Frame for MonoFrame<T> {}
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
/// A stereo frame.
pub struct StereoFrame<T> {
/// Left channel
pub l: T,
/// Right channel
pub r: T,
}
impl<T> Frame for StereoFrame<T> {}
pub unsafe fn frame_from_bytes<F: Frame>(bytes: &[u8]) -> &[F] {
debug_assert_eq!(bytes.len() % mem::size_of::<F>(), 0);
slice::from_raw_parts(
bytes.as_ptr() as *const F,
bytes.len() / mem::size_of::<F>(),
)
}
pub unsafe fn frame_from_bytes_mut<F: Frame>(bytes: &mut [u8]) -> &mut [F] {
debug_assert!(bytes.len() % mem::size_of::<F>() == 0);
slice::from_raw_parts_mut(bytes.as_ptr() as *mut F, bytes.len() / mem::size_of::<F>())
}
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