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 // include\mmf\src\plugin\Hwdevice\audio\pcm16ToPcm16HwDevice.h

    15 // 

    16 //

    17 

    18 #ifndef __MMF_PCM16_TO_PCM16_HW_DEVICE_H__

    19 #define __MMF_PCM16_TO_PCM16_HW_DEVICE_H__

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

    21 

    22 #ifdef SYMBIAN_MDF_SHAREDCHUNK_SOUNDDRIVER

    23 	#include "mdasoundadapter.h"

    24 #else

    25 	#include <mdasound.h>

    26 #endif

    27 

    28 #include "../../swcodecwrapper/mmfswaudioinput.h"

    29 

    30 #include "../../swcodecwrapper/mmfSwCodecDataPath.h"

    31 

    32 // for the bitrate custom interface

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

    34 

    35 //note we need to keep this buffer at 8K as the tone utility expects 8K

    36 const TInt KPCM16ToPCM16BufferSize = 0x2000;

    37 const TInt KDevSoundMinFrameSize = 0x800; //2K

    38 const TInt KDevSoundMaxFrameSize = 0x4000;  //16K

    39 const TInt KDevSoundDeltaFrameSize = 0x800; //2K

    40 const TInt KDevSoundFramesPerSecond = 4;

    41 

    42 /*

    43 *

    44 * class CMMFPcm16ToPcm16HwDevice

    45 *

    46 */

    47 class CMMFPcm16ToPcm16HwDevice : public CMMFSwCodecWrapper,

    48 								 public MMMFDevSoundCustomInterfaceBitRate

    49 	{

    50 public:

    51 	static  CMMFPcm16ToPcm16HwDevice* NewL();

    52 	virtual CMMFSwCodec& Codec();

    53 	virtual TAny* CustomInterface(TUid aInterfaceId);

    54 	~CMMFPcm16ToPcm16HwDevice(); 

    55 

    56 	TUint CalculateBufferSize();

    57 private:

    58 	// from MMMFDevSoundCustomInterfaceBitRate

    59 	virtual void GetSupportedBitRatesL(RArray<TInt>& aSupportedBitRates);

    60 	virtual TInt BitRateL();

    61 	virtual void SetBitRateL(TInt aBitRate);

    62 	

    63 	void BitRatesFromSampleRatesL(RArray<TInt>& aSupportedBitRates, const RArray<TInt>& aSupportedSampleRates);

    64 

    65 	void ConstructL();

    66 	};

    67 

    68 /*

    69 *

    70 * class CMMFPcm16ToPcm16Codec converts Pcm16 to pcm16

    71 *

    72 */

    73 class CMMFPcm16ToPcm16Codec : public CMMFSwCodec

    74 	{

    75 public:

    76 	virtual TCodecProcessResult ProcessL(const CMMFBuffer& /*aSource*/, CMMFBuffer& /*aDest*/);

    77 //	virtual TUint SourceBufferSize() {return KPCM16ToPCM16BufferSize;};

    78 //	virtual TUint SinkBufferSize() {return KPCM16ToPCM16BufferSize;};

    79 	virtual TUint SourceBufferSize();

    80 	virtual TUint SinkBufferSize();

    81 	virtual TBool IsNullCodec() {return ETrue;};

    82 

    83 	void SetHwDevice(CMMFPcm16ToPcm16HwDevice* aHwDevice);

    84 private:

    85 	TUint iBufferSize;

    86 	CMMFPcm16ToPcm16HwDevice* iHwDevice;

    87 	};

    88 

    89 #endif //__MMF_PCM16_TO_PCM16_HW_DEVICE_H__

    90