Struct DoubleBufferSubmitter 

pub struct DoubleBufferSubmitter { /* private fields */ }

Double-buffered command submission manager.

Manages two CommandSlots in a ping-pong fashion to enable overlapping CPU encoding and GPU execution.

Implementations

impl DoubleBufferSubmitter

pub fn new() -> Self

Create a new double-buffer submitter.

pub fn begin_encode(&mut self) -> Result<usize, DoubleBufferError>

Begin encoding a new frame in the next available slot.

Returns the slot index (0 or 1) that was acquired.

Errors

Returns DoubleBufferError::NoFreeSlot if both slots are busy.

pub fn set_payload_size(&mut self, slot_idx: usize, size: usize)

Set the payload size for the current encoding slot.

This is informational and can be used for statistics.

pub fn submit<F>( &mut self, slot_idx: usize, gpu_work: F, ) -> Result<(), DoubleBufferError>

where F: FnOnce(usize) -> Result<(), String>,

Finish encoding and submit the slot for GPU execution.

The gpu_work closure receives the slot index and should perform the actual GPU command submission.

Errors

Returns an error if the slot is not in the Encoding state or if gpu_work fails.

pub fn mark_complete(&mut self, slot_idx: usize)

Mark a slot as complete (GPU execution finished).

Should be called when the GPU fence/completion signal fires.

pub fn submit_sync<F>( &mut self, payload_size: usize, gpu_work: F, ) -> Result<u64, DoubleBufferError>

where F: FnOnce(usize) -> Result<(), String>,

Convenience: encode, submit, and immediately mark complete.

Useful for synchronous (non-pipelined) operation.

Errors

Returns an error if no slot is free or if GPU work fails.

pub fn stats(&self) -> &DoubleBufferStats

Get a snapshot of the current statistics.

pub fn slot(&self, idx: usize) -> Option<&CommandSlot>

Get the state of a specific slot.

pub fn active_slot(&self) -> usize

Get the current active (encoding) slot index.

pub fn frame_counter(&self) -> u64

The total number of frames that have been assigned frame indices.

pub fn reset(&mut self)

Reset both slots to idle and clear statistics.

pub fn reclaim(&mut self, slot_idx: usize)

Force-reclaim a complete or idle slot (for error recovery).

Trait Implementations

impl Default for DoubleBufferSubmitter

fn default() -> Self

Returns the “default value” for a type.