InferenceStep QML Type

Represents a single step in an inference flow. More...

• List of all members, including inherited members

Properties

• connections : list<DataPortConnection>

Signals

• dataAvailable(var data, string portName)

Detailed Description

InferenceStep is the base type for the steps that make up an InferenceFlow, such as InferenceVideoSource, VisionInference, and InferenceResultParser. Each step produces or consumes data through its ports and forwards that data to other steps through connections.

A step wraps a C++ QInferenceStep that is created when the QML component completes. Declaring DataPortConnection children on a step wires its output to the input of other steps in the same flow.

See also InferenceFlow and DataPortConnection.

Property Documentation

connections : list<DataPortConnection>

This property holds the list of connections from this step's output ports to the input ports of other steps in the flow.

This is the default property of InferenceStep, so DataPortConnection objects declared as children of a step are added to this list. The connections are transferred to the underlying step when the component completes.

See also DataPortConnection.

Signal Documentation

dataAvailable(var data, string portName)

This signal is emitted when new data becomes available on this step.

The data argument holds the payload, and portName identifies the output port that produced it. The payload's format is determined by the model and the backend that produced it, so a receiver has to be written for the model in use. InferenceResultParser turns the raw output of a VisionInference step into structured results.