Sensor Adapter Functions

A sensor adapter wraps a biometric device and provides a standard interface that enables the Windows Biometric service to configure the sensor, capture samples, and control the flow of biometric data to the processing engine. The following functions must be implemented by the developer of the adapter. They are called by the Windows Biometric service.

In this section

Topic	Description
SensorAdapterAcceptCalibrationData	Passes calibration data from the engine adapter to the sensor adapter.
SensorAdapterActivate	Gives the Sensor Adapter the chance to perform any work needed to bring the sensor component out of an idle state.
SensorAdapterAttach	Adds a sensor adapter to the processing pipeline of the biometric unit.
SensorAdapterCancel	Cancels all pending sensor operations.
SensorAdapterClearContext	Prepares the processing pipeline of the biometric unit for a new operation.
SensorAdapterControlUnit	Performs a vendor-defined control operation that does not require elevated privilege.
SensorAdapterControlUnitPrivileged	Performs a vendor-defined control operation that requires elevated privilege.
SensorAdapterDeactivate	Gives the Sensor Adapter the chance to perform any work needed to put the sensor component into an idle state.
SensorAdapterDetach	Releases adapter specific resources attached to the pipeline.
SensorAdapterExportSensorData	Retrieves the most recently captured biometric sample formatted as a standard WINBIO_BIR structure.
SensorAdapterFinishCapture	Called by the Windows Biometric Framework to wait for the completion of a capture operation initiated by the SensorAdapterStartCapture function.
SensorAdapterGetIndicatorStatus	Retrieves a value that indicates whether the sensor indicator is on or off.
SensorAdapterNotifyPowerChange	Receives notification about a change in the computer power state and prepares the sensor adapter accordingly.
SensorAdapterPipelineCleanup	Gives the Sensor Adapter the chance to perform any cleanup in that requires help from the Engine or Storage adapter components.
SensorAdapterPipelineInit	Gives the Sensor Adapter the chance to perform any initialization that remains incomplete, and which requires help from the Engine or Storage adapter components.
SensorAdapterPushDataToEngine	Makes the current contents of the sample buffer available to the engine adapter.
SensorAdapterQueryCalibrationFormats	Determines the set of calibration formats supported by the Sensor Adapter.
SensorAdapterQueryExtendedInfo	Determines the capabilities and limitations of the biometric sensor component.
SensorAdapterQueryStatus	Retrieves information about the current status of the sensor device.
SensorAdapterReset	Reinitializes the sensor.
SensorAdapterSetCalibrationFormat	Notifies the sensor adapter that a particular calibration data format has been selected by the engine adapter.
SensorAdapterSetIndicatorStatus	Toggles the sensor indicator on or off.
SensorAdapterSetMode	Sets the sensor adapter mode.
SensorAdapterStartCapture	Begins an asynchronous biometric capture.
WbioQuerySensorInterface	Retrieves a pointer to the WINBIO_SENSOR_INTERFACE structure for the sensor adapter.

Related topics

Plug-in Functions