1 /*

     2 * Copyright (c) 2002-2003 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "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 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef __MMF_PCMU8_TO_PCM16_HW_DEVICE_H__

    19 #define __MMF_PCMU8_TO_PCM16_HW_DEVICE_H__

    20 

    21 #include <mmf/server/mmfswcodecwrapper.h>

    22 #include "MMFAudioCodec.h"

    23 #include "MMFAudioU8ToS16PcmCodec.h"

    24 

    25 const TInt KPCMU8ToPCM16SourceBufferSize = 0x0800;

    26 const TInt KPCMU8ToPCM16SinkBufferSize   = 0x1000; //sink buffer length is twice source

    27 

    28 /*

    29 * 

    30 * class CMMFPcmU8ToPcm16HwDevice

    31 *

    32 */

    33 class CMMFPcmU8ToPcm16HwDevice : public CMMFSwCodecWrapper

    34 	{

    35 public:

    36 	static  CMMFPcmU8ToPcm16HwDevice* NewL();

    37 	virtual CMMFSwCodec& Codec();

    38     ~CMMFPcmU8ToPcm16HwDevice(); 

    39 private:

    40 	void ConstructL();

    41 	};

    42 

    43 /*

    44 *

    45 * class CMMFPcmU8ToPcm16Codec converts Pcm 8 unsigned to Pcm16

    46 *

    47 */

    48 class CMMFPcmU8ToPcm16Codec : public CMMFSwCodec

    49 	{

    50 public:

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

    52 	virtual TUint SourceBufferSize() {return KPCMU8ToPCM16SourceBufferSize;};

    53 	virtual TUint SinkBufferSize() {return KPCMU8ToPCM16SinkBufferSize;};

    54 private:

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

    56 private:

    57 	TMMFAudioU8ToS16PcmCodec iAudioU8ToS16Pcm ;

    58 	};

    59 

    60 #endif //__MMF_PCMU8_TO_PCM16_HW_DEVICE_H__

    61