Struct DmaDoubleBuffer 

pub struct DmaDoubleBuffer<T, const N: usize> { /* private fields */ }

Double-buffer ping-pong manager for DMA audio streaming.

Designed to work seamlessly with async DMA drivers (e.g. Embassy dac.write(), sai.write(), timer.write_dma(), etc.) or IRQ-driven DMA half-transfer callbacks.

Implementations

impl<T: Copy + Default, const N: usize> DmaDoubleBuffer<T, N>

pub const HALF_SIZE: usize = N

pub const TOTAL_SIZE: usize

pub fn new() -> Self

pub const fn from_buffers(buf0: [T; N], buf1: [T; N]) -> Self

pub fn buffers(&self) -> &[[T; N]; 2]

Get reference to both half buffers.

pub fn buffers_mut(&mut self) -> &mut [[T; N]; 2]

Get mutable reference to both half buffers.

pub fn current_half_mut(&mut self) -> &mut [T; N]

Get current active half-buffer slice to fill with new samples.

pub fn current_half(&self) -> &[T; N]

Get current active half-buffer slice.

pub fn swap_and_get_next(&mut self) -> &mut [T; N]

Swap active half-buffer index and return mutable slice for the next batch.

pub fn fill_and_swap<F>(&mut self, fill_fn: F) -> &mut [T; N]

where F: FnMut(&mut [T; N]),

Fill the inactive buffer half using fill_fn, then swap to make it active and return its slice.

Trait Implementations

impl<T: Clone, const N: usize> Clone for DmaDoubleBuffer<T, N>

fn clone(&self) -> DmaDoubleBuffer<T, N>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug, const N: usize> Debug for DmaDoubleBuffer<T, N>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Copy + Default, const N: usize> Default for DmaDoubleBuffer<T, N>

fn default() -> Self

Returns the “default value” for a type.