/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  

*

*/

#ifndef TEXTTOSPEECHENGINE_H

#define TEXTTOSPEECHENGINE_H

// INCLUDES

#include <e32base.h>

#include <speechsynthesis.h>

/**

* Application engine 

*/

class CTextToSpeechEngine : public CActive

    {

    public: // Constructors and destructor

        static CTextToSpeechEngine* NewL();

        virtual ~CTextToSpeechEngine();

        void InitAndPlayText( const TDesC& aText );

        void InitAndPlayTextToFile( const TDesC& aText,

                                     const TFileName& aFileName );

        void Play( );

        void PauseL();

        void StopL();

        TInt VolumeL();

        void SetVolumeL( TInt aVolume );

        TInt MaxVolumeL();

        TInt SpeakingRateL();

        void SetSpeakingRateL( TInt aRate );

        TInt MaxSpeakingRateL();

        TVoice VoiceL();

        void SetVoiceL( const TVoice& aVoice ); 

        void GetLanguagesL( RArray<TLanguage>& aLanguages );

        void GetVoicesL( RArray<TVoice>& aVoices, TLanguage aLanguage );

    protected: // From CActive

       /**

        * CActive::RunL

        */

        void RunL();

        /**

        * CActive::DoCancel()

        */

        void DoCancel();

    private:    

        CTextToSpeechEngine();

        void ConstructL();

    private: // Data

        enum TState

            {

            EIdle,

            EPriming,

            ESpeaking

            };

        RSpeechSynthesis            iServer;

        TState                      iState; 

        TFileName                   iFileName;        

    };

#endif

// End of File