Struct FramePool 

pub struct FramePool<'m, const N: usize> { /* private fields */ }

N equal slots carved from one buffer.

Implementations

impl<'m, const N: usize> FramePool<'m, N>

pub fn new(buf: &'m mut [u8]) -> Result<Self>

Split buf into N slots. N must be 1..=255 and each slot at least one byte; the trailing remainder of buf is unused.

pub fn slot_len(&self) -> usize

Bytes per slot.

pub fn free_slots(&self) -> usize

Slots not currently acquired.

pub fn acquire(&mut self) -> Option<SlotId>

Take a free slot, or None when all are in use (a dropped frame, by policy of the caller — never a block).

pub fn release(&mut self, id: SlotId) -> Result<()>

Return a slot to the pool.

pub fn slot_mut(&mut self, id: SlotId) -> Result<&mut [u8]>

The whole slot, for filling.

pub fn commit(&mut self, id: SlotId, used: usize) -> Result<()>

Record how many bytes of the slot hold the frame (a JPEG is shorter than its slot; a raw frame fills exactly its geometry).

pub fn slot(&self, id: SlotId) -> Result<&[u8]>

The committed bytes of a slot.

pub fn frame( &self, id: SlotId, geometry: Geometry, timestamp: Micros, sequence: u32, ) -> Result<Frame<'_>>

A validated frame view over the committed bytes of a slot.

Trait Implementations

impl<'m, const N: usize> Debug for FramePool<'m, N>

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

Formats the value using the given formatter.