/*

* 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 __CPROCAMRINFILEHANDLER_H__

#define __CPROCAMRINFILEHANDLER_H__

#include <e32base.h>

#include <f32file.h>

#include "AudCommon.h"

#include "ProcConstants.h"

#include "ProcInFileHandler.h"

#include "AudClip.h"

#include "ProcDecoder.h"

class CProcAMRInFileHandler: public CProcInFileHandler 

    {

public:

    static CProcAMRInFileHandler* NewL(const TDesC& aFileName,  

                                       RFile* aFileHandle,

                                       CAudClip* aClip, TInt aReadBufferSize,

                                       TInt aTargetSampleRate = 0, 

                                       TChannelMode aChannelMode = EAudSingleChannel);

    static CProcAMRInFileHandler* NewLC(const TDesC& aFileName, 

                                        RFile* aFileHandle,

                                        CAudClip* aClip, TInt aReadBufferSize,

                                        TInt aTargetSampleRate = 0, 

                                        TChannelMode aChannelMode = EAudSingleChannel);

    // From base class

    void GetPropertiesL(TAudFileProperties* aProperties);

    /**

    * Seeks a certain audio frame for reading

    *

    * Possible leave codes:  

    *    

    * @param aFrameIndex    frame index

    * @param aTime            time from the beginning of file in milliseconds

    *

    * @return    ETrue if successful

    *            EFalse if beyond the file

    */

    TBool SeekAudioFrame(TInt32 aTime);

    /**

    * Seeks a cut in audio frame for reading

    *

    * Possible leave codes:  

    *    

    *

    * @return    ETrue if successful

    *                

    */

    TBool SeekCutInFrame();

    virtual TBool SetNormalizingGainL(const CProcFrameHandler* aFrameHandler);

    virtual ~CProcAMRInFileHandler();

private:

    void ConstructL(const TDesC& aFileName, RFile* aFileHandle, CAudClip* aClip, 

                    TInt aReadBufferSize, TInt aTargetSampleRate = 0, 

                    TChannelMode aChannelMode = EAudSingleChannel);

    virtual TBool GetEncAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime);

    // durations in milliseconds

    virtual TBool GetFrameInfo(TInt& aSongDuration,

                                TInt& aFrameAmount, 

                                TInt& aAverageFrameDuration, 

                                TInt& aAverageFrameSize);

    TInt iLastDRCL;

protected:

    CProcAMRInFileHandler();

    };

#endif