// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// which accompanies this distribution, and is available

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef __SPEECHRECOGNITIONDATACLIENT_H__

#define __SPEECHRECOGNITIONDATACLIENT_H__

#include <e32base.h>

#include <s32strm.h>

//  INCLUDES

#include <mmf/common/mmfcontrollerframework.h>

#include <mmf/common/speechrecognitiondatacommon.h>

// FORWARD DECLARATION

class TDiagnostic;

// CLASS DECLARATION

/**

@publishedAll

@released

Class to encapsulate a client recognition result.

The result is formulated for client consumption.

@since  8.0

*/

class CSDClientResult : public CBase

	{

public:	 // Constructors and destructor

	/**

	Destructor.

	*/

	IMPORT_C ~CSDClientResult();

	/**

	Two-phased constructor. Creates an uninitialised recognition result.

	Can leave with one of the system-wide error codes

	@return CSDClientResult object

	*/

	IMPORT_C static CSDClientResult* NewL();

	/**

	Two-phased constructor. Creates an uninitialised recognition result. A copy of the newly created class

	is pushed onto the cleanup stack.

	Can leave with one of the system-wide error codes.

	@return CSDClientResult object

	*/

	IMPORT_C static CSDClientResult* NewLC();

	/**

	Two-phased constructor. Creates a result with a grammar and rule ID.

	Can leave with one of the system-wide error codes.

	@param  aGrammarID

	        The grammar ID of the result.

	@param  aRuleID

	        The rule ID of the result.

	@return CSDClientResult object.

	*/

	IMPORT_C static CSDClientResult* NewL(TGrammarID aGrammarID, TRuleID aRuleID);

	/**

	Two-phased constructor. Creates a result with a grammar and rule ID. A copy of the newly created class

	is pushed onto the cleanup stack.

	Can leave with one of the system-wide error codes.

	@param  aGrammarID

	        The grammar ID of the result

	@param  aRuleID

	        The rule ID of the result

	@return CSDClientResult object.

	*/

	IMPORT_C static CSDClientResult* NewLC(TGrammarID aGrammarID, TRuleID aRuleID);

	/**

	Sets the grammar ID on the result.

	@param  aGrammarID

	        The grammar identifier.

	@since 8.0

	*/

	IMPORT_C void SetGrammarID(TGrammarID aGrammarID);

	/**

	Retrieves the grammar ID of the result.

	@return Grammar identifier.

	@since  8.0

	*/

	IMPORT_C TGrammarID GrammarID() const;

	/**

	Sets the rule ID of the result.

	@param  aRuleID

	        The rule identifier.

	@since  8.0

	*/

	IMPORT_C void SetRuleID(TRuleID aRuleID);

	/**

	Returns the rule ID of the result.

	@return The rule identifier.

	@since  8.0

	*/

	IMPORT_C TRuleID RuleID() const;

	/**

	@internalTechnology

	Writes the class to a stream.

	@param  aStream

	        A RWriteStream to write the class to.

	@since  8.0

	*/

	void ExternalizeL(RWriteStream& aStream) const;

	/**

	@internalTechnology

	Reads the class from a stream.

	@param  aStream

	        A RReadStream to read from.

	@since  8.0

	*/

	void InternalizeL(RReadStream& aStream);

private:

	void ConstructL();

	CSDClientResult();

	CSDClientResult(TGrammarID aGrammarID, TRuleID aRuleID);

private:

	TGrammarID iGrammarID;

	TRuleID iRuleID;

	};

/**

@publishedAll

@released

Class to encapsulate a client recogntion result set

This is a lightweight result set formulated for client consumption

@since  8.0

*/

class CSDClientResultSet : public CBase

	{

public:	// Constructors and destructor

	/**

	Destructor.

	*/

	IMPORT_C ~CSDClientResultSet();

	/**

	Two-phased constructor.

	@return CSDClientResultSet object.

	*/

	IMPORT_C static CSDClientResultSet* NewL();

	/**

	Two-phased constructor. Pushes the newly created object onto the cleanup stack

	@return CSDClientResultSet object.

	*/

	IMPORT_C static CSDClientResultSet* NewLC();

	/**

	Sets the maximum number of best matches (N-best) expected in the recognition result after 

	recognition.

	@param  aMaxResults

	        The maximum number of matches expected in the recognition result.

	@since  8.0

	*/

	IMPORT_C void SetMaxResultsL(TInt aMaxResults);

	/**

	Returns the current value of the max number of expected after recognition.

	@return The maximum number of best matches (N-best) expected in the recognition result.

	@since  8.0

	*/

	IMPORT_C TInt MaxResults() const;

	/**

	Returns a result at a given index within the result set.

	@param  aIndex 

	        The index of result to return.

	@return A pointer to CSDClientResult object.

	@since 8.0

	*/

	IMPORT_C const CSDClientResult& At(TInt aIndex) const;

	/**

	Sets the number of results actually returned after recogntion.

	@param  aResultCount 

	        The number of results returned by the recognizer.

	@since 8.0

	*/

	IMPORT_C void SetResultCount(TInt aResultCount);

	/**

	Returns the number of results actually returned after recogntion.

	@return The number of results actually returned after recogntion.

	@since 8.0

	*/

	IMPORT_C TInt ResultCount() const;

	/**

	Sets the diagnostic of this result set.

	@param  aDiagnostic 

	        The reference to the diagostic object.

	@since 8.0

	*/

	IMPORT_C void SetDiagnostic(TDiagnostic& aDiagnostic);

	/**

	Gets the diagnostic of this result set.

	@return A reference to TDiagnostic object.

	@since 8.0

	*/

	IMPORT_C const TDiagnostic& Diagnostic() const;

	/**

	Writes the state of the class to a stream.

	@param  aStream

	        The stream to write to.

	@since  8.0

	*/

	IMPORT_C void ExternalizeL(RWriteStream& aStream) const;

	/**

	Restores the state of the object from a stream.

	@param  aStream

	        The stream to read from.

	@since  8.0

	*/

	IMPORT_C void InternalizeL(RReadStream& aStream);

private:

	void ConstructL();

	CSDClientResultSet();

private:

	TInt iMaxResults;	// maximum number of results

	TInt iResultCount; // number of recognition results

	RPointerArray<CSDClientResult> iResultArray; // array of recognition results

	TDiagnostic* iDiagnostic;	// diagnostic information

	};

#endif  // __SPEECHRECOGNITIONDATACLIENT_H__