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/*++
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.
Copyright (c) Microsoft Corporation. All rights reserved
Module Name:
EngineAdapter.h
Abstract:
This module contains a stub implementation of an Engine Adapter
plug-in for the Windows Biometric service.
Author:
-
Environment:
Win32, user mode only.
Revision History:
NOTES:
(None)
--*/
#pragma once
#include "winbio_adapter.h"
///////////////////////////////////////////////////////////////////////////////
//
// The WINIBIO_ENGINE_CONTEXT structure is privately-defined by each
// Engine Adapter. Its purpose is to maintain any information that
// should persist across Engine Adapter API calls.
//
// The Adapter allocates and initializes one of these structures in its
// 'Attach' routine and saves its address in the Pipeline->EngineContext
// field.
//
// The Engine Adapter's 'Detach' routine cleans up and deallocates the
// structure and sets the PipelineContext->EngineContext field to NULL.
//
///////////////////////////////////////////////////////////////////////////////
typedef struct _WINIBIO_ENGINE_CONTEXT {
//
// The following fields illustrate the kind of information
// the Engine Adapter needs to keep in this structure:
//
// FeatureSet - A processed description of a biometric
// sample.
//
// Enrollment - An object that tracks the current state
// of an in-progress enrollment operation.
//
// Template - A template either created from the Feature
// Set or from the Enrollment object.
//
// Comparison - An object that tracks the result of a
// one-to-one comparison between the Template
// and the Feature Set.
//
PVOID x;
PVOID y;
PVOID z;
} WINIBIO_ENGINE_CONTEXT, *PWINIBIO_ENGINE_CONTEXT;
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