toneplayerengine.h

《基于Symbian OS的手机开发与应用实践》这本书的配套源码。

/*
* ============================================================================
*  Name     : CTonePlayerEngine from TonePlayerEngine.h
*  Part of  : TonePlayer
*  Created  : 31.01.2006 by ToBeReplacedByAuthor
*  Description:
*     Declares engine for application.
*  Version  :
*  Copyright: ToBeReplacedByCopyright
* ============================================================================
*/

#ifndef TONEPLAYERENGINE_H
#define TONEPLAYERENGINE_H

// INCLUDES
#include <e32base.h>
#include <mdaaudiotoneplayer.h>
   
// CONSTANTS

// FORWARD DECLARATIONS


// CLASS DECLARATION

/**
*  CTonePlayerEngine application class.
*/
class CTonePlayerEngine : public CBase, public MMdaAudioToneObserver
    {
    public: // Observer interface
        class MObserver
            {
            public:
                virtual void OnComplete(TInt aError) = 0;
            };

    public: // Constructors and destructor
        /**
        * Two-phased constructor.
        */
        static CTonePlayerEngine* NewL(MObserver& aObserver);

        /**
        * Destructor.
        */
        virtual ~CTonePlayerEngine();

    public: // Functions from base classes

    public: // Functions from MMdaAudioToneObserver
        void MatoPrepareComplete(TInt aError);
        void MatoPlayComplete(TInt aError);

    public: // New functions
        void PlayL(TInt aFrequency);
        void Stop();

    protected:  // New functions

    protected:  // Functions from base classes

    private:
        /**
        * EPOC default constructor.
        */
        CTonePlayerEngine(MObserver& aObserver);
        void ConstructL();

    private: // member variables
        MObserver& iObserver;
        CMdaAudioToneUtility* iTonePlayer;
    };

#endif

// End of File