1 // Copyright (c) 1997-2009 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 

    17 #ifndef __MMF_CODEC_BASE_DEFINITIONS_H__

    18 #define __MMF_CODEC_BASE_DEFINITIONS_H__

    19 

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

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

    22 #include <e32std.h>

    23 // IMA ADPCM Codecs

    24 

    25 // Internal to Symbian

    26 class TMMFImaAdpcmCodecStateOld

    27 	{

    28 public:

    29 	inline TMMFImaAdpcmCodecStateOld();

    30 	inline TMMFImaAdpcmCodecStateOld(TInt16 aPredicted, TUint8 aIndex);

    31 public:

    32 	TInt16 iPredicted; // Previous output value

    33 	TUint8 iIndex; // Index into stepsize table

    34 	};

    35 

    36 // Internal to Symbian

    37 class TMMFAudioCodecBaseOld

    38 	{

    39 public:

    40 	inline TMMFAudioCodecBaseOld();

    41 	//

    42 	virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples)=0;

    43 	};

    44 

    45 

    46 // Internal to Symbian

    47 class TMMFImaAdpcmBaseCodecOld : public TMMFAudioCodecBaseOld

    48 	{

    49 public:

    50 	inline TMMFImaAdpcmBaseCodecOld(const TInt aChannels);

    51 	inline void SetState(const TMMFImaAdpcmCodecStateOld& aState);

    52 	inline void SetState(const TMMFImaAdpcmCodecStateOld& aState,const TInt aChannel);

    53 	inline const TMMFImaAdpcmCodecStateOld& GetState();

    54 	inline const TMMFImaAdpcmCodecStateOld& GetState(const TInt aChannel);

    55 	void ResetBuffer();

    56 	TBool OutputStep();

    57 protected:

    58 	TMMFImaAdpcmCodecStateOld iState[2];	//for mono & stereo

    59 	static const TInt iIndexTable[16];

    60 	static const TInt iStepSizeTable[89];

    61 	TBool iBufferStep;

    62 	TInt iBuffer;

    63 	TInt iChannels;

    64 	};

    65 

    66 // Internal to Symbian

    67 class TMMFImaAdpcmTo16PcmCodecOld : public TMMFImaAdpcmBaseCodecOld

    68 	{

    69 public:

    70 	inline TMMFImaAdpcmTo16PcmCodecOld(const TInt aChannels);

    71 	virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples);

    72 	};

    73 

    74 

    75 // Internal to Symbian

    76 class TMMF16PcmToImaAdpcmCodecOld : public TMMFImaAdpcmBaseCodecOld

    77 	{

    78 public:

    79 	inline TMMF16PcmToImaAdpcmCodecOld(const TInt aChannels);

    80 	virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples);

    81 	};

    82 

    83 

    84 inline TMMFAudioCodecBaseOld::TMMFAudioCodecBaseOld()

    85 	{}

    86 

    87 inline TMMFImaAdpcmBaseCodecOld::TMMFImaAdpcmBaseCodecOld(const TInt aChannels)

    88 : iBufferStep(ETrue), iBuffer(0), iChannels(aChannels) {}

    89 

    90 inline TMMFImaAdpcmCodecStateOld::TMMFImaAdpcmCodecStateOld()

    91 	: iPredicted(0), iIndex(0) {}

    92 

    93 inline TMMFImaAdpcmCodecStateOld::TMMFImaAdpcmCodecStateOld(TInt16 aPredicted, TUint8 aIndex)

    94 	: iPredicted(aPredicted), iIndex(aIndex) {}

    95 

    96 inline void TMMFImaAdpcmBaseCodecOld::SetState(const TMMFImaAdpcmCodecStateOld& aState)

    97 	{ iState[0] = aState; }

    98 

    99 inline const TMMFImaAdpcmCodecStateOld& TMMFImaAdpcmBaseCodecOld::GetState()

   100 	{ return iState[0]; }

   101 

   102 inline void TMMFImaAdpcmBaseCodecOld::SetState(const TMMFImaAdpcmCodecStateOld& aState, const TInt aChannel)

   103 	{ iState[aChannel] = aState; }

   104 

   105 inline const TMMFImaAdpcmCodecStateOld& TMMFImaAdpcmBaseCodecOld::GetState(const TInt aChannel)

   106 	{ return iState[aChannel]; }

   107 

   108 inline TMMFImaAdpcmTo16PcmCodecOld::TMMFImaAdpcmTo16PcmCodecOld(const TInt aChannels)

   109 	:TMMFImaAdpcmBaseCodecOld(aChannels)

   110 	{}

   111 inline TMMF16PcmToImaAdpcmCodecOld::TMMF16PcmToImaAdpcmCodecOld(const TInt aChannels)

   112 	:TMMFImaAdpcmBaseCodecOld(aChannels)

   113 	{}

   114 

   115 #endif