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 MMFIMAADPCMTOPCM16HWDEVICE_H

    17 #define MMFIMAADPCMTOPCM16HWDEVICE_H

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

    19 #include "MMFAudioCodecBase.h"

    20 #include "MMFAudioImaAdpcmToS16PcmCodec.h"

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

    22 

    23 const TInt KImaToPCM16SrcBufferSize  = 1024;

    24 const TInt KImaToPCM16SinkBufferSize = 4096;

    25 

    26 /*

    27 *

    28 * class CMMFImaAdpcmToPcm16CodecHwDevice 

    29 *

    30 */

    31 class CMMFImaAdpcmToPcm16CodecHwDevice : public CMMFSwCodecWrapper, public MMMFDevSoundCustomInterfaceFileBlockLength

    32 	{

    33 public:

    34 	static  CMMFImaAdpcmToPcm16CodecHwDevice* NewL();

    35 	virtual CMMFSwCodec& Codec();

    36 	~CMMFImaAdpcmToPcm16CodecHwDevice(); 

    37 	virtual TInt Start(TDeviceFunc aFuncCmd, TDeviceFlow aFlowCmd);

    38 private:

    39 	void SetFileBlockLength(TUint aBlockAlign);

    40 	TAny* CustomInterface(TUid aInterfaceId);

    41 private:

    42 	void ConstructL();

    43 

    44 private:

    45 	TUint iBlockAlign;

    46 	};

    47 

    48 

    49 /*

    50 *

    51 * class CMMFMulawToPcm16Codec coverts Imaad to PCM16

    52 *  

    53 */

    54 class CMMFImaAdpcmToPcm16Codec : public CMMFSwCodec

    55 	{

    56 public:

    57 	CMMFImaAdpcmToPcm16Codec();

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

    59 	virtual TUint SourceBufferSize() {return KImaToPCM16SrcBufferSize;}

    60 	virtual TUint SinkBufferSize() {return KImaToPCM16SinkBufferSize;}

    61 	TInt Configure(TUint aChannels, TUint aSampleRate, TUint aBlockAlign = 0);

    62 private:

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

    64 private:

    65 	TMMFAudioImaAdpcmToS16PcmCodec iImaAdpcmTo16Pcm;

    66 	

    67 private:

    68 	TUint iChannels;

    69 	TUint iSampleRate;

    70 	TUint iBlockAlign;

    71 	TUint iSamplesPerBlock;

    72 	};

    73 

    74 #endif //MMFIMAADPCMTOPCM16HWDEVICE_H