WINBIO_ENGINE_INTERFACE structure (winbio_adapter.h)
The WINBIO_ENGINE_INTERFACE structure contains pointers to your custom engine adapter functions. The Windows Biometric Framework uses this structure to locate the functions.
Syntax
typedef struct _WINBIO_ENGINE_INTERFACE {
WINBIO_ADAPTER_INTERFACE_VERSION Version;
WINBIO_ADAPTER_TYPE Type;
SIZE_T Size;
GUID AdapterId;
PIBIO_ENGINE_ATTACH_FN Attach;
PIBIO_ENGINE_DETACH_FN Detach;
PIBIO_ENGINE_CLEAR_CONTEXT_FN ClearContext;
PIBIO_ENGINE_QUERY_PREFERRED_FORMAT_FN QueryPreferredFormat;
PIBIO_ENGINE_QUERY_INDEX_VECTOR_SIZE_FN QueryIndexVectorSize;
PIBIO_ENGINE_QUERY_HASH_ALGORITHMS_FN QueryHashAlgorithms;
PIBIO_ENGINE_SET_HASH_ALGORITHM_FN SetHashAlgorithm;
PIBIO_ENGINE_QUERY_SAMPLE_HINT_FN QuerySampleHint;
PIBIO_ENGINE_ACCEPT_SAMPLE_DATA_FN AcceptSampleData;
PIBIO_ENGINE_EXPORT_ENGINE_DATA_FN ExportEngineData;
PIBIO_ENGINE_VERIFY_FEATURE_SET_FN VerifyFeatureSet;
PIBIO_ENGINE_IDENTIFY_FEATURE_SET_FN IdentifyFeatureSet;
PIBIO_ENGINE_CREATE_ENROLLMENT_FN CreateEnrollment;
PIBIO_ENGINE_UPDATE_ENROLLMENT_FN UpdateEnrollment;
PIBIO_ENGINE_GET_ENROLLMENT_STATUS_FN GetEnrollmentStatus;
PIBIO_ENGINE_GET_ENROLLMENT_HASH_FN GetEnrollmentHash;
PIBIO_ENGINE_CHECK_FOR_DUPLICATE_FN CheckForDuplicate;
PIBIO_ENGINE_COMMIT_ENROLLMENT_FN CommitEnrollment;
PIBIO_ENGINE_DISCARD_ENROLLMENT_FN DiscardEnrollment;
PIBIO_ENGINE_CONTROL_UNIT_FN ControlUnit;
PIBIO_ENGINE_CONTROL_UNIT_PRIVILEGED_FN ControlUnitPrivileged;
PIBIO_ENGINE_NOTIFY_POWER_CHANGE_FN NotifyPowerChange;
PIBIO_ENGINE_RESERVED_1_FN Reserved_1;
PIBIO_ENGINE_PIPELINE_INIT_FN PipelineInit;
PIBIO_ENGINE_PIPELINE_CLEANUP_FN PipelineCleanup;
PIBIO_ENGINE_ACTIVATE_FN Activate;
PIBIO_ENGINE_DEACTIVATE_FN Deactivate;
PIBIO_ENGINE_QUERY_EXTENDED_INFO_FN QueryExtendedInfo;
PIBIO_ENGINE_IDENTIFY_ALL_FN IdentifyAll;
PIBIO_ENGINE_SET_ENROLLMENT_SELECTOR_FN SetEnrollmentSelector;
PIBIO_ENGINE_SET_ENROLLMENT_PARAMETERS_FN SetEnrollmentParameters;
PIBIO_ENGINE_QUERY_EXTENDED_ENROLLMENT_STATUS_FN QueryExtendedEnrollmentStatus;
PIBIO_ENGINE_REFRESH_CACHE_FN RefreshCache;
PIBIO_ENGINE_SELECT_CALIBRATION_FORMAT_FN SelectCalibrationFormat;
PIBIO_ENGINE_QUERY_CALIBRATION_DATA_FN QueryCalibrationData;
PIBIO_ENGINE_SET_ACCOUNT_POLICY_FN SetAccountPolicy;
PIBIO_ENGINE_CREATE_KEY_FN CreateKey;
PIBIO_ENGINE_IDENTIFY_FEATURE_SET_SECURE_FN IdentifyFeatureSetSecure;
PIBIO_ENGINE_ACCEPT_PRIVATE_SENSOR_TYPE_INFO_FN AcceptPrivateSensorTypeInfo;
PIBIO_ENGINE_CREATE_ENROLLMENT_AUTHENTICATED_FN CreateEnrollmentAuthenticated;
PIBIO_ENGINE_IDENTIFY_FEATURE_SET_AUTHENTICATED_FN IdentifyFeatureSetAuthenticated;
} *PWINBIO_ENGINE_INTERFACE, WINBIO_ENGINE_INTERFACE;
Members
Version
Version number of this structure.
Windows 10: The version number must be WINBIO_ENGINE_INTERFACE_VERSION_3 or WINBIO_ENGINE_INTERFACE_VERSION_4. For more information on implementing WINBIO_ENGINE_INTERFACE_VERSION_4, see Sensor requirements for secure biometrics.
Windows Server 2012 R2, Windows 8.1, Windows Server 2012 and Windows 8: The version number must be WINBIO_ENGINE_INTERFACE_VERSION_2.
Windows Server 2008 R2 and Windows 7: The version number must be WINBIO_ENGINE_INTERFACE_VERSION_1.
Type
The type of adapter. This must be WINBIO_ADAPTER_TYPE_ENGINE.
Size
The size, in bytes, of this structure. Set this value to the size of the WINBIO_ENGINE_INTERFACE structure.
AdapterId
A GUID that uniquely identifies the engine adapter. You must generate this value.
Attach
A pointer to your implementation of the EngineAdapterAttach function.
Detach
A pointer to your implementation of the EngineAdapterDetach function.
ClearContext
A pointer to your implementation of the EngineAdapterClearContext function.
QueryPreferredFormat
A pointer to your implementation of the EngineAdapterQueryPreferredFormat function.
QueryIndexVectorSize
A pointer to your implementation of the EngineAdapterQueryIndexVectorSize function.
QueryHashAlgorithms
A pointer to your implementation of the EngineAdapterQueryHashAlgorithms function.
SetHashAlgorithm
A pointer to your implementation of the EngineAdapterSetHashAlgorithm function.
QuerySampleHint
A pointer to your implementation of the EngineAdapterQuerySampleHint function.
AcceptSampleData
A pointer to your implementation of the EngineAdapterAcceptSampleData function.
ExportEngineData
A pointer to your implementation of the EngineAdapterExportEngineData function.
VerifyFeatureSet
A pointer to your implementation of the EngineAdapterVerifyFeatureSet function.
IdentifyFeatureSet
A pointer to your implementation of the EngineAdapterIdentifyFeatureSet function.
CreateEnrollment
A pointer to your implementation of the EngineAdapterCreateEnrollment function.
UpdateEnrollment
A pointer to your implementation of the EngineAdapterUpdateEnrollment function.
GetEnrollmentStatus
A pointer to your implementation of the EngineAdapterGetEnrollmentStatus function.
GetEnrollmentHash
A pointer to your implementation of the EngineAdapterGetEnrollmentHash function.
CheckForDuplicate
A pointer to your implementation of the EngineAdapterCheckForDuplicate function.
CommitEnrollment
A pointer to your implementation of the EngineAdapterCommitEnrollment function.
DiscardEnrollment
A pointer to your implementation of the EngineAdapterDiscardEnrollment function.
ControlUnit
A pointer to your implementation of the EngineAdapterControlUnit function.
ControlUnitPrivileged
A pointer to your implementation of the EngineAdapterControlUnitPrivileged function.
NotifyPowerChange
A pointer to your implementation of the EngineAdapterNotifyPowerChange function. This member is supported starting in Windows 8.
Reserved_1
This field is reserved and should be set to NULL.
PipelineInit
A pointer to your implementation of the EngineAdapterPipelineInit function. This member is supported starting in Windows 10.
PipelineCleanup
A pointer to your implementation of the EngineAdapterPipelineCleanup function. This member is supported starting in Windows 10.
Activate
A pointer to your implementation of the EngineAdapterActivate function. This member is supported starting in Windows 10.
Deactivate
A pointer to your implementation of the EngineAdapterDeactivate function. This member is supported starting in Windows 10.
QueryExtendedInfo
A pointer to your implementation of the EngineAdapterQueryExtendedInfo function. This member is supported starting in Windows 10.
IdentifyAll
A pointer to your implementation of the EngineAdapterIdentifyAll function. This member is supported starting in Windows 10.
SetEnrollmentSelector
A pointer to your implementation of the EngineAdapterSetEnrollmentSelector function. This member is supported starting in Windows 10.
SetEnrollmentParameters
A pointer to your implementation of the EngineAdapterSetEnrollmentParameters function. This member is supported starting in Windows 10.
QueryExtendedEnrollmentStatus
A pointer to your implementation of the EngineAdapterQueryExtendedEnrollmentStatus function. This member is supported starting in Windows 10.
RefreshCache
A pointer to your implementation of the EngineAdapterRefreshCache function. This member is supported starting in Windows 10.
SelectCalibrationFormat
A pointer to your implementation of the EngineAdapterSelectCalibrationFormat function. This member is supported starting in Windows 10.
QueryCalibrationData
A pointer to your implementation of the EngineAdapterQueryCalibrationData function. This member is supported starting in Windows 10.
SetAccountPolicy
A pointer to your implementation of the EngineAdapterSetAccountPolicy function. This member is supported starting in Windows 10.
CreateKey
A pointer to your implementation of the EngineAdapterCreateKey function. This member is supported starting in Windows 10, version 1607.
IdentifyFeatureSetSecure
A pointer to your implementation of the EngineAdapterIdentifyFeatureSetSecure function. This member is supported starting in Windows 10, version 1607.
AcceptPrivateSensorTypeInfo
CreateEnrollmentAuthenticated
IdentifyFeatureSetAuthenticated
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 7 [desktop apps only] |
| Minimum supported server | Windows Server 2008 R2 [desktop apps only] |
| Header | winbio_adapter.h |