author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 18 Jan 2010 20:20:30 +0200 | |
changeset 1 | b13cd05eeb2f |
parent 0 | bf1d17376201 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004-2006 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: CNssContextSrsPortal provides SRS related functionalities for |
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* context processing. A context is saved in the SRS DB by creating |
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* model bank, lexicon, and grammar into the SRS. |
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* |
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*/ |
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#ifndef NSSVASCCONTEXTSRSPORTAL_H |
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#define NSSVASCCONTEXTSRSPORTAL_H |
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// INCLUDES |
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#include "nssvassiutilitywrapper.h" |
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#include <nsssispeechrecognitionutilityobserver.h> |
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#include "nssvasccontext.h" |
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#include "nssvasmcoresrsdbeventhandler.h" |
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// FORWARD DECLARATIONS |
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class CNssContext; |
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//FORWARD DECLARATION |
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class MNssSpeechRecognitionEvent; |
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// CLASS DECLARATION |
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/** |
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* CNssContextSrsPortal is the interface to SRS. |
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* @lib NssVASApi.lib |
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* @since 2.8 |
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*/ |
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class CNssContextSrsPortal: public CBase, public MSISpeechRecognitionUtilityObserver |
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{ |
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public: |
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// ENUMERATIONS |
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enum TNssTerminationState |
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{ |
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EVASTERMINATION_PENDING, |
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EVASTERMINATION_NOT_PENDING |
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}; |
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public: |
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/** |
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* C++ constructor |
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*/ |
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CNssContextSrsPortal(); |
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/** |
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* C++ destructor |
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*/ |
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~CNssContextSrsPortal(); |
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public: // from MSpeechRecognitionEvent |
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/** |
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* overriding interface from MSpeechRecognitionUtilityObserver |
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* @since 2.0 |
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*/ |
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void MsruoEvent(TUid aEvent, TInt aResult); |
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public: // for inter component use |
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/** |
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* Save a context to SRS. Asyncronous function. |
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* @since 2.0 |
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* @param aContext - context to be saved |
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* @param aSrsDBEventHandler - call back address |
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* @return none |
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*/ |
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void BeginSaveContextL(CNssContext* aContext, MNssCoreSrsDBEventHandler* aSrsDBEventHandler); |
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/** |
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* Delete a context from SRS. Asyncronous function |
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* @since 2.0 |
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* @param aContext - context to be deleted |
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* @param aSrsDBEventHandler - call back address |
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* @return none |
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*/ |
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void BeginDeleteContextL(CNssContext* aContext, MNssCoreSrsDBEventHandler* aSrsDBEventHandler); |
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/** |
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* Reset speaker adapted models: Remove a model bank and create a new one. |
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* @since 2.8 |
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* @param |
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* @return none |
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*/ |
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void BeginResetModelsL( TSIModelBankID aAdaptedModels, |
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TSIModelBankID& aNewModels, MNssCoreSrsDBEventHandler* aSrsDBEventHandler ); |
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/** |
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* Commit a context from SRS. Syncronous function |
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* @since 2.0 |
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* @param |
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* @return error code |
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*/ |
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TInt CommitSaveContext(); |
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|
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/** |
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* Don't commit a context from SRS. Syncronous function |
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* @since 2.8 |
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* @param |
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* @return error code |
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*/ |
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TInt RollbackSaveContext(); |
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/** |
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* Register context to the portal |
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* @since 2.0 |
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* @param |
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* @return |
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*/ |
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void Register(); |
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|
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/**Deregister context from portal |
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* @since 2.0 |
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* @param |
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* @return |
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*/ |
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void Deregister(); |
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|
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/** |
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* Set portal state to termination pending, or not pending |
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* @since 2.0 |
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* @param aState - termination pending, or not. |
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* @return |
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*/ |
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void SetTerminationState(TNssTerminationState aState); |
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|
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/** |
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* Returns context count, number of contexts registered with the portal |
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* @since 2.0 |
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* @param |
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* @return count |
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*/ |
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TInt ContextCount(); |
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|
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/** |
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* Clean up the SRS after the SRS operation fail |
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* @since 2.0 |
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* @param |
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* @return |
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*/ |
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void CleanUp(TInt aResult); |
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|
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/** |
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* Delete the SRS |
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* @since 2.0 |
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* @param |
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* @return |
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*/ |
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void DeleteSRS(); |
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|
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/** |
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* Method to process the SRS DB error |
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* @since 2.0 |
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* @param aResult - the result value from SRS to indicate an error |
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* @return - an error code to identify the DB error |
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*/ |
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MNssCoreSrsDBEventHandler::TNssSrsDBResult DoSrsDBResult(TInt aResult); |
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|
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|
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|
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private: |
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|
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// a count of the number of contexts registered to the portal |
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TInt iContextCount; |
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|
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// state denoting if the builder is destroyed or not |
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TNssTerminationState iTerminationState; |
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|
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// instance of the SRS utility class |
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CNssSiUtilityWrapper* iSpeechRecognitionUtility; |
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|
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// Pointer to SRS DB Event Handler object. |
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MNssCoreSrsDBEventHandler* iSrsDBEventHandler; |
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|
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// model bank id, used internally for error handling |
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TSIModelBankID iModelBankId; |
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|
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// lexicon id, used internally for error handling |
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TSILexiconID iLexiconId; |
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// grammar id, used internally for error handling |
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TSIGrammarID iGrammarId; |
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|
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// local pointer to context, used internally for error handling |
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CNssContext *iContext; |
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|
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// flag for recovery during error cases |
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TBool iRecovery; |
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// when resetting speaker adaptation, the new model bank ID is stored here. |
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TSIModelBankID* iResetModelBankId; |
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// states required for EDiskFull errors from SRS |
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enum TState |
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{ |
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EVASNone, |
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EVASCreateModelBank, |
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EVASCreateLexicon, |
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EVASCreateGrammar, |
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EVASRemoveModelBank, |
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EVASRemoveLexicon, |
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EVASRemoveGrammar, |
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EVASResetRemoveModelBank, |
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EVASResetCreateModelBank, |
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EVasWaitForCommitChanges |
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} iState; |
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}; |
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#endif // NSSVASCCONTEXTSRSPORTAL_H |
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// End of File |