Enum BackendKind 

pub enum BackendKind {
    Fifo(Box<dyn FifoBackend>),
    FrameSwap(Box<dyn FrameSwapBackend>),
}

Type-erased backend wrapper for use in the stream scheduler.

Wraps either a FifoBackend or a FrameSwapBackend, providing delegation for common DacBackend methods and a unified write path.

Variants

Fifo(Box<dyn FifoBackend>)

A FIFO/queue-based backend.

FrameSwap(Box<dyn FrameSwapBackend>)

A double-buffered frame-swap backend.

Implementations

impl BackendKind

pub fn dac_type(&self) -> DacType

Returns the DAC type.

pub fn caps(&self) -> &DacCapabilities

Returns the device capabilities.

pub fn connect(&mut self) -> Result<()>

Connect to the device.

pub fn disconnect(&mut self) -> Result<()>

Disconnect from the device.

pub fn is_connected(&self) -> bool

Returns whether the device is connected.

pub fn stop(&mut self) -> Result<()>

Stop output.

pub fn set_shutter(&mut self, open: bool) -> Result<()>

Open/close the shutter.

pub fn try_write( &mut self, pps: u32, points: &[LaserPoint], ) -> Result<WriteOutcome>

Write points to the backend (dispatches to the appropriate method).

• For FIFO backends: calls try_write_points()
• For frame-swap backends: calls write_frame()

pub fn estimator(&self) -> Option<&dyn BufferEstimator>

The protocol-owned BufferEstimator for FIFO backends.

Frame-swap backends never queue points, so they return None.

pub fn is_frame_swap(&self) -> bool

Returns true if this is a frame-swap backend.

pub fn is_ready_for_frame(&mut self) -> bool

Returns true if the device is ready to accept a new frame.

For FIFO backends, always returns true (they handle backpressure via try_write). For frame-swap backends, queries the device readiness.

pub fn frame_capacity(&self) -> Option<usize>

Returns the frame capacity for frame-swap backends, or None for FIFO.