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_PCMU8_HW_DEVICE_H__

    17 #define __MMF_BT_PCM16_TO_PCMU8_HW_DEVICE_H__

    18 

    19 #include <mmfbtswcodecwrapper.h>

    20 #include "MmfBtAudioCodec.h"

    21 

    22 #include "MMFAudioS16ToU8PcmCodec.h"

    23 

    24 const TInt KPCM16ToPCMU8SourceBufferSize = 0x2000;

    25 const TInt KPCM16ToPCMU8SinkBufferSize = 0x1000; //sink buffer length is half source

    26 

    27 /*

    28 *

    29 * class CMMFPcm16ToPcmU8HwDevice

    30 *

    31 */

    32 class CMMFPcm16ToPcmU8HwDevice : public CMMFSwCodecWrapper

    33 	{

    34 public:

    35 	static  CMMFPcm16ToPcmU8HwDevice* NewL();

    36 	virtual CMMFSwCodec& Codec();

    37 	~CMMFPcm16ToPcmU8HwDevice(); 

    38 private:

    39 	void ConstructL();

    40 	};

    41 

    42 /*

    43 *

    44 * class CMMFPcm16ToPcmU8Codec converts Pcm16 to Pcm unsigned 8 bit

    45 *

    46 */

    47 class CMMFPcm16ToPcmU8Codec : public CMMFSwCodec

    48 	{

    49 public:

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

    51 	virtual TUint SourceBufferSize() {return KPCM16ToPCMU8SourceBufferSize;};

    52 	virtual TUint SinkBufferSize() {return KPCM16ToPCMU8SinkBufferSize;};

    53 private:

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

    55 private:

    56 	TMMFAudioS16ToU8PcmCodec iAudioS16ToU8Pcm ;

    57 	};

    58 

    59 #endif //__MMF_BT_PCMS16_TO_PCMS8_HW_DEVICE_H__

    60