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# Structs

## Docs

- [hololink::emulation::AsyncEventCtxt](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/asynceventctxt.md): 
- [hololink::emulation::ControlMessage](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/controlmessage.md): 
- [hololink::emulation::ControlMessageHeader](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/controlmessageheader.md): 
- [hololink::emulation::ControlPlaneCallback](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/controlplanecallback.md): 
- [hololink::emulation::DataPlaneCtxt](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/dataplanectxt.md): Common, target-invariant per-DataPlane context.
- [hololink::emulation::DPRegisters](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/dpregisters.md): Per-data-plane register slice. One instance per unique data_plane_id, shared by every DataPlane instance with that id. Holds the hif_data registers (DP_PACKET_SIZE, DP_PACKET_UDP_PORT, DP_VP_MASK) the host writes once per physical data plane.
- [hololink::emulation::DPSensorRegisters](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/dpsensorregisters.md): Per-sensor register slice. One instance per unique sensor_id, shared by every DataPlane instance that targets that sensor. Holds the vp_data registers (DP_QP, DP_RKEY, DP_PAGE_*, DP_BUFFER_LENGTH, DP_HOST_MAC/IP/UDP_PORT, ...) the host writes per stream.
- [hololink::emulation::FrameMetadata](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/framemetadata.md): 
- [hololink::emulation::HSBEmulatorCtxt](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/hsbemulatorctxt.md): Common, target-invariant per-HSBEmulator context.
- [hololink::emulation::I2CControllerCtxt](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/i2ccontrollerctxt.md): Common, target-invariant per-I2CController context.
- [hololink::emulation::IPAddress](https://docs.nvidia.com/holoscan/sensor-bridge/2-7-latest/api-reference/emulation-api/structs/ipaddress.md): Encapsulates all the relevant information for transmission from an Emulator device IP address.