/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "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:

* Ixonos Plc

*

* Description:  

*

*/

#ifndef __CPROCOUTFILEHANDLER_H__

#define __CPROCOUTFILEHANDLER_H__

#include <e32base.h>

#include <f32file.h>

#include "AudCommon.h"

#include "ProcConstants.h"

class CProcOutFileHandler : public CBase

    {

public:

/*

    static CProcOutFileHandler* NewL(const TDesC& aFileName, 

                              TInt aWriteBufferSize,

                              TAudFileProperties aProperties);

    static CProcOutFileHandler* NewLC(const TDesC& aFileName, 

                              TInt aWriteBufferSize,

                              TAudFileProperties aProperties);

*/

    /**

    * Sets the output file properties

    *

    * @param    aProperties    properties of the output file

    */

    TBool SetPropertiesL(TAudFileProperties aProperties);

    void GetPropertiesL(const TAudFileProperties*& aProperties);

    /**

    * Initializes an output file

    * (writes file headers etc.)

    *

    * @return ETrue if successful

    *

    */

    virtual TBool InitializeFileL();

    /**

    * Finalizes an output file

    * Writes some file specific information if needed and

    * closes the file

    *

    */

    virtual TBool FinalizeFile();

    /**

    * Writes a new audio frame to an output file

    *

    * @param    aFrame    an audio frame to be written

    * @param    aSize    the number of bytes written

    *

    */

    virtual TBool WriteAudioFrameL(const HBufC8*& aFrame, TInt& aSize);

    /**

    * Writes a new audio frame to an output file

    *

    * @param    aFrame    an audio frame to be written

    * @param    aSize    the number of bytes written

    * @param    aDurationMilliSeconds frame duration in milliseconds

    *

    */

    virtual TBool WriteAudioFrameL(const HBufC8*& aFrame, TInt& aSize, TInt aDurationMilliSeconds);

    /**

    * Writes silent frames to current file position

    * 

    * @param    aTime    time (in milliseconds) of how much silence is to be written

    */

    virtual TBool WriteSilenceL(TInt32 aTime) = 0;

    virtual ~CProcOutFileHandler();

private:

protected:

    void ConstructL(const TDesC& aFileName, TInt aWriteBufferSize, TAudFileProperties aProperties);

    void InitL(const TDesC& aFileName, TInt aWriteBufferSize);

    TBool OpenFileForWritingL();

    TBool CloseFile();

    CProcOutFileHandler();

    TInt BufferedFileWriteL(const TDesC8& aDes,TInt aLength);

    TInt BufferedFileGetPos();

    TInt BufferedFileSetPos(TInt aPos);

    HBufC* iFileName;

    RFile iFile;

    RFs iFs;

    TBool iFileOpen;

    HBufC8* iWriteBuffer;

    TInt iWriteBufferSize;

    TAudFileProperties* iProperties;

    HBufC8* iSilentFrame;

    };

#endif