Data Capture Context Frame Listener

Defined in package com.scandit.datacapture.core.capture

DataCaptureContextFrameListener

interface DataCaptureContextFrameListener

Added in version 6.0.0

Interface for observing/listening to frame processing related events of a data capture context.

To observe changes of the data capture context’s frame processing, one or more DataCaptureContextFrameListener may be added. These listeners provide hooks into different parts of the data capture context.

Frame processing only happens if at least one DataCaptureMode is added.

onObservationStarted(dataCaptureContext)

fun onObservationStarted(dataCaptureContext: DataCaptureContext)

Added in version 6.0.0

Called when the listener has been added to the data capture context and is from now on receiving events.

onObservationStopped(dataCaptureContext)

fun onObservationStopped(dataCaptureContext: DataCaptureContext)

Added in version 6.0.0

Called when the listener has been removed from the data capture context and is no longer receiving events.

onFrameProcessingStarted(dataCaptureContext, frameData)

fun onFrameProcessingStarted(dataCaptureContext: DataCaptureContext,
        frameData: FrameData)

Added in version 6.0.0

Called when a frame will be processed.

onFrameProcessingFinished(dataCaptureContext, frameData)

fun onFrameProcessingFinished(dataCaptureContext: DataCaptureContext,
        frameData: FrameData)

Added in version 6.0.0

Called when a frame has been processed.