1 /*

     2 * Copyright (c) 2010 Ixonos Plc.

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - Initial contribution

    11 *

    12 * Contributors:

    13 * Ixonos Plc

    14 *

    15 * Description:  

    16 *

    17 */

    18 

    19 

    20 

    21 #ifndef __CPROCAMRFRAMEHANDLER_H__

    22 #define __CPROCAMRFRAMEHANDLER_H__

    23 

    24 #include <e32base.h>

    25 #include <f32file.h>

    26 

    27 #include "AudCommon.h"

    28 #include "ProcConstants.h"

    29 #include "ProcFrameHandler.h"

    30 

    31 class CProcAMRFrameHandler : public CProcFrameHandler 

    32     {

    33 

    34 public:

    35 

    36     /*

    37     * Symbian constructors and a destructor

    38     */

    39 

    40     static CProcAMRFrameHandler* NewL();

    41     static CProcAMRFrameHandler* NewLC();

    42 

    43     virtual ~CProcAMRFrameHandler();

    44 

    45     // From base class CProcFrameHandler

    46     virtual TBool ManipulateGainL(const HBufC8* aFrameIn, HBufC8*& aFrameOut, TInt8 aGain);

    47     virtual TBool GetGainL(const HBufC8* aFrame, RArray<TInt>& aGains, TInt& aMaxGain) const;

    48     virtual TBool GetNormalizingMargin(const HBufC8* aFrame, TInt8& aMargin) const;

    49 

    50     

    51 private:

    52     

    53     // constructL

    54     void ConstructL();

    55     

    56     // c++ constructor

    57     CProcAMRFrameHandler();

    58 

    59     // internal function to read AMR gains

    60     TBool GetAMRGains(const HBufC8* aFrame, RArray<TInt>& aGains, TInt& aMaxGain) const;

    61 

    62     // gets the length of the next frame based on mode myte

    63     TInt GetNextFrameLength(const HBufC8* aFrame, TInt aPosNow);

    64     

    65     TBool GetGPGains(const HBufC8* aFrame, RArray<TInt>& aGains) const;

    66     

    67     // member variables for energy calculation

    68     mutable TReal iPreviousEnergy;

    69 	mutable TReal iPreviousRn[4];

    70 

    71     

    72     };

    73 

    74 #endif