vrexengine.h

symbian s60 有关音频的代码实例,供参考

/*
* ============================================================================
*  Name     : CVRexEngine from VRexEngine.h
*  Part of  : Video Example
*  Created  : 30/08/2006 by Forum  Nokia
*  Implementation notes:
*  Version  : 2.0
*  Copyright: Nokia Corporation, 2006
* ============================================================================
*/

#ifndef __VREXENGINE_H__
#define __VREXENGINE_H__

#include <e32base.h>
#include <f32file.h>        // for CDir
#include <badesca.h>        // for CDesCArray
#include <apmstd.h>         // for TDataType

#include "VRexRecorderAdapter.h"
#include "VRexPlayerAdapter.h"

class CVideoPlayerAdapter;
class CVideoRecorderAdapter;

/**
* CVRexEng engine class.
*/
class CVRexEngine : public CBase
    {
	// Methods
	public:

		enum TEngineState
		{
		EInit = 0,
		EPreview,
		EPlay,
		ERecord,
		};

		/**
         * Two-phased constructor.
         */
		static CVRexEngine* NewL();

		/**
         * Two-phased constructor.
         */
		static CVRexEngine* NewLC();

		/**
         * Destructor.
         */
		~CVRexEngine();

		/**
         * This method gets the video file name at the listbox position.
         * @param aPosition, file position in listbox
         * @param aName, file name
		 * @return void
         */
	    void GetVideoFilePathAndNameAtPosition(TInt aPosition, TDes &aName);

        /**
         * This method reads the appropriate directory list.
         * @return file server response code.
         */
        TInt StartFileList();

        /**
         * This method constructs the listbox items with directory
		 * information.
         * @param aItems, listbox items
         * @return void
         */
        void GetFileListItemsL(CDesCArray* iItems);

        /**
         * This method sets which directory to list.
		 * @param aDirectory, directory to set
		 * @return void
         */
        void SetDirectory(TInt aDirectory);

        /**
         * This method sets whether modification date or file size
		 * is shown. There is also an option for toggling the status.
		 * @param aSizeDate, set size or date
         * @return void
         */
        void SetSizeDate(TInt aSizeDate);

        /**
         * This method ends the file server session.
         */
        void EndFileList();

		 /**
         * This method returns current file name.
         * @return TFileName
         */
		TFileName CurrentFileName()
			{
		return iCurrentFileName;
			}
		 /**
         * This method sets engine state.
         * @return TFileName
         */
		void SetEngineState(TEngineState aEngineState)
			{
			iEngineState=aEngineState;
			}

		 /**
         * This method returns engine state.
         * @return TFileName
         */
		TEngineState EngineState()
			{
			return iEngineState;
			}
    private:
	    /**
         * Standard EPOC 2nd phase constructor.
         */
		void ConstructL();

		/**
         * Default constructor.
         */
		CVRexEngine();

	// Data members
	public: // Public members are used to keep the example code simple
		CVideoPlayerAdapter* iVPlayer;
		CVideoRecorderAdapter* iVRecorder;

	private:
		TEngineState iEngineState;

	private: //Data
        // Define local CDir variable
        CDir* iDirList;
        // File server session
        RFs iFsSession;

    private: // variables
        // Which directory to show
        TInt iDirectory;
        // Show date or size?
        TInt iSizeDate;
        //Current file name to play
        TFileName iCurrentFileName;
    };

#endif //__VREXENGINE_H__