Struct CaptureHost 

pub struct CaptureHost<'a> {
    pub sink: UnboundedSender<CapturedInput>,
    pub shutdown: Receiver<CaptureSessionStop>,
    pub channel_slot: CaptureChannelSlot,
    pub registry: &'a ChannelRegistry,
    pub device_io: DeviceIoGate,
}

What the process running a capture session hands it: where inputs go, when to stop, and the handles that tie the session to the rest of the device layer.

Fields

sink: UnboundedSender<CapturedInput>

Receives every CapturedInput the session decodes.

shutdown: Receiver<CaptureSessionStop>

Resolves, or is dropped, when the session should restore its controls and return. CaptureSessionStop::Handoff names the route that now reaches the same physical device.

channel_slot: CaptureChannelSlot

Where the session publishes its open channel so bounded hardware writes reuse it instead of opening a second connection.

registry: &'a ChannelRegistry

Inventory’s channel publications: the session runs on the one current for its route and stops when that publication is replaced or removed.

device_io: DeviceIoGate

Host device-I/O gate: the session refuses to start while it is closed and sends nothing until it reopens.