Device Class Reference

Generic CVB physical device. More...

Inherited by EmuDevice, GenICamDevice, NonStreamingDevice, VideoDevice, and VinDevice.

Public Member Functions
None	close (self)
	Closes the device and releases all hardware resources held.
cvb.EventCookie	register_connection_state_changed_event (self, Callable[[], None] handler)
	Register a listener to node updated event.
Union[cvb.ImageStream, cvb.PointCloudStream, cvb.CompositeStream]	stream (self, Type[cvb.ImageStream|cvb.PointCloudStream|cvb.CompositeStream] stream_type, int index=0)
	Gets the stream for this device by index.
Optional[Union[cvb.Stream, cvb.IndexedStream]]	stream (self)
	Gets the legacy stream for this device.
None	unregister_connection_state_changed_event (self, cvb.EventCookie event_cookie)
	Manually unregister a listener to the node updated event.

Properties
	connection_state = property
	int: Gets the current connection state (see cvb.ConnectionState).
	device_control = property
	Optional[cvb.DeviceControl]: Gets the DeviceControl interface if present.
	device_image = property
	Optional[cvb.DeviceImage]: Gets, if available, the device image pointing to the last synchronized image.
	digital_io = property
	Optional[cvb.DigitalIO]: Gets the DigitalIO interface if present.
	image_rect = property
	Optional[cvb.ImageRect]: Gets the ImageRect interface if present.
	node_maps = property
	Dict[str, Optional[cvb.NodeMap]]: Gets the dictionary holding all available NodeMaps.
	resource_locator = property
	str: Gets the access token or path of the file name including its extension.
	software_trigger = property
	Optional[cvb.SoftwareTrigger]: Gets the SoftwareTrigger interface if present.
	stream_count = property
	int: Get the number of streams.

Detailed Description

Generic CVB physical device.

A device may provide an image stream or just expose a configuration interface.

See cvb.DeviceFactory for creating instances of this object.

Online Manuals

Device Configuration

Acquisition and Streaming

Examples

DeviceConfiguration

StreamingSimple

StreamingParallel

StreamingAsync

MultiStream

MultiPart

Rdma

QmlStreamDisplay

For further information regarding Qt/QML, see Image Display in Python Using Qt/QML

Member Function Documentation

close()

None close

(

self

)

Closes the device and releases all hardware resources held.

This will leave the python object as empty shell. Any further access, that requires resources, will throw.

register_connection_state_changed_event()

cvb.EventCookie register_connection_state_changed_event	(		self,
		Callable[[], None]	handler )

Register a listener to node updated event.

Parameters

handler : Callable[[], None] Listener, to node updated event.

Returns

cvb.EventCookie Event cookie, to manually unregister the listener.

stream() [1/2]

Optional[Union[cvb.Stream, cvb.IndexedStream]] stream

(

self

)

Gets the legacy stream for this device.

Returns

Optional[Union[cvb.Stream, cvb.IndexedStream]] The stream object.

stream() [2/2]

Union[cvb.ImageStream, cvb.PointCloudStream, cvb.CompositeStream] stream	(		self,
		Type[cvb.ImageStream| cvb.PointCloudStream| cvb.CompositeStream]	stream_type,
		int	index = 0 )

Gets the stream for this device by index.

Parameters

stream_type : Type[cvb.ImageStream| cvb.PointCloudStream| cvb.CompositeStream] Casts the result to this datatype.

index : int The index of the stream.

Returns

Union[cvb.ImageStream, cvb.PointCloudStream, cvb.CompositeStream] The stream object.

unregister_connection_state_changed_event()

None unregister_connection_state_changed_event	(		self,
		cvb.EventCookie	event_cookie )

Manually unregister a listener to the node updated event.

Parameters

event_cookie : cvb.EventCookie Event cookie, obtained from registering the listener.

Property Documentation

node_maps

node_maps = property

static

Dict[str, Optional[cvb.NodeMap]]: Gets the dictionary holding all available NodeMaps.

Access a node map using cvb.NodeMapID, e.g. the GenTL device node map:

node_map = device.node_maps[cvb.NodeMapID.Device]