1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  

    15 *

    16 */

    17 

    18 

    19 #ifndef TEXTTOSPEECHENGINE_H

    20 #define TEXTTOSPEECHENGINE_H

    21 

    22 // INCLUDES

    23 

    24 #include <e32base.h>

    25 #include <speechsynthesis.h>

    26 

    27 /**

    28 * Application engine 

    29 */

    30 class CTextToSpeechEngine : public CActive

    31     {

    32     public: // Constructors and destructor

    33 

    34         static CTextToSpeechEngine* NewL();

    35 

    36         virtual ~CTextToSpeechEngine();

    37 

    38         void InitAndPlayText( const TDesC& aText );

    39         void InitAndPlayTextToFile( const TDesC& aText,

    40                                      const TFileName& aFileName );

    41         

    42         void Play( );

    43         void PauseL();

    44         void StopL();

    45         

    46         TInt VolumeL();

    47         void SetVolumeL( TInt aVolume );

    48         TInt MaxVolumeL();

    49         

    50         TInt SpeakingRateL();

    51         void SetSpeakingRateL( TInt aRate );

    52         TInt MaxSpeakingRateL();

    53         

    54         TVoice VoiceL();

    55         void SetVoiceL( const TVoice& aVoice ); 

    56         void GetLanguagesL( RArray<TLanguage>& aLanguages );

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

    58         

    59     protected: // From CActive

    60     

    61        /**

    62         * CActive::RunL

    63         */

    64         void RunL();

    65 

    66         /**

    67         * CActive::DoCancel()

    68         */

    69         void DoCancel();

    70                 

    71     private:    

    72     

    73         CTextToSpeechEngine();

    74 

    75         void ConstructL();

    76 

    77     private: // Data

    78 

    79         enum TState

    80             {

    81             EIdle,

    82             EPriming,

    83             ESpeaking

    84             };

    85 

    86         RSpeechSynthesis            iServer;

    87         

    88         TState                      iState; 

    89 

    90         TFileName                   iFileName;        

    91         

    92     };

    93 

    94 #endif

    95 

    96 // End of File