1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef __MMF_BT_PCM16_TO_ALAW_HW_DEVICE_H__

    17 #define __MMF_BT_PCM16_TO_ALAW_HW_DEVICE_H__

    18 #include <mmfbtswcodecwrapper.h>

    19 #include "MmfBtAudioCodec.h"

    20 #include "MMFAudioSPcm16ToALawCodec.h"

    21 

    22 const TInt KPCM16ToALawSrcBufferSize  = 0x2000;

    23 const TInt KPCM16ToAlawSinkBufferSize = 0x1000;

    24 

    25 /*

    26 *

    27 * class CMMFPcm16ToAlawHwDevice 

    28 *

    29 */

    30 class CMMFPcm16ToAlawHwDevice : public CMMFSwCodecWrapper

    31 	{

    32 public:

    33 	static  CMMFPcm16ToAlawHwDevice* NewL();

    34 	virtual CMMFSwCodec& Codec();

    35     ~CMMFPcm16ToAlawHwDevice(); 

    36 private:

    37 	void ConstructL();

    38 	};

    39 

    40 /*

    41 *

    42 * class CMMFPcm16ToALawCodec coverts PCM to ALaw

    43 *  

    44 */

    45 class CMMFPcm16ToALawCodec : public CMMFSwCodec

    46 	{

    47 public:

    48 	virtual TCodecProcessResult ProcessL(const CMMFBuffer& aSource, CMMFBuffer& aDest);

    49 	virtual TUint SourceBufferSize() {return KPCM16ToALawSrcBufferSize;};

    50 	virtual TUint SinkBufferSize() {return KPCM16ToAlawSinkBufferSize;};

    51 private:

    52 	TBool CheckPreconditions( const CMMFDataBuffer* aSrcBuffer, CMMFDataBuffer* aDestBuffer );

    53 private:

    54 	TMMFAudioSPcm16ToAlawCodec  iPcm16ToALaw;

    55 	};

    56 

    57 #endif //__MMF_BT_PCM16_TO_ALAW_HW_DEVICE_H__