audiorecorderengine.h

《基于Symbian OS的手机开发与应用实践》这本书的配套源码。

/*
* ============================================================================
*  Name     : CAudioRecorderEngine from AudioRecorderEngine.h
*  Part of  : AudioRecorder
*  Created  : 31.01.2006 by ToBeReplacedByAuthor
*  Description:
*     Declares engine for application.
*  Version  :
*  Copyright: ToBeReplacedByCopyright
* ============================================================================
*/

#ifndef AUDIORECORDERENGINE_H
#define AUDIORECORDERENGINE_H

// INCLUDES
#include <e32base.h>
#include <mdaaudiosampleeditor.h>

// CONSTANTS

// FORWARD DECLARATIONS


// CLASS DECLARATION

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

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

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

    public: // Functions from base classes

    public: // Functions from MMdaObjectStateChangeObserver
        void MoscoStateChangeEvent(CBase* aObject, TInt aPreviousState, 
            TInt aCurrentState, TInt aError);

    public: // New functions
        void RecordL(const TFileName& aFileName);
        void Stop();

    protected:  // New functions

    protected:  // Functions from base classes

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

    private: // member variables
        MObserver& iObserver;
        CMdaAudioRecorderUtility* iAudioRecorder;

        // audio recording settings
        TMdaFileClipLocation iLocation;
        TMdaAudioDataSettings iSettings;
        TMdaWavClipFormat iFormat;
        TMdaPcmWavCodec iCodec;
    };

#endif

// End of File