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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#ifndef __MMF_CODEC_BASE_DEFINITIONS_H__
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#define __MMF_CODEC_BASE_DEFINITIONS_H__
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#include <mmf/server/mmfcodec.h>
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#include <mmf/server/mmfdatabuffer.h>
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#include <e32std.h>
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// IMA ADPCM Codecs
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// Internal to Symbian
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class TMMFImaAdpcmCodecStateOld
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{
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public:
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inline TMMFImaAdpcmCodecStateOld();
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inline TMMFImaAdpcmCodecStateOld(TInt16 aPredicted, TUint8 aIndex);
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public:
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TInt16 iPredicted; // Previous output value
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TUint8 iIndex; // Index into stepsize table
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};
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// Internal to Symbian
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class TMMFAudioCodecBaseOld
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{
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public:
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inline TMMFAudioCodecBaseOld();
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//
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virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples)=0;
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};
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// Internal to Symbian
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class TMMFImaAdpcmBaseCodecOld : public TMMFAudioCodecBaseOld
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{
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public:
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inline TMMFImaAdpcmBaseCodecOld(const TInt aChannels);
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inline void SetState(const TMMFImaAdpcmCodecStateOld& aState);
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inline void SetState(const TMMFImaAdpcmCodecStateOld& aState,const TInt aChannel);
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inline const TMMFImaAdpcmCodecStateOld& GetState();
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inline const TMMFImaAdpcmCodecStateOld& GetState(const TInt aChannel);
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void ResetBuffer();
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TBool OutputStep();
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protected:
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TMMFImaAdpcmCodecStateOld iState[2]; //for mono & stereo
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static const TInt iIndexTable[16];
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static const TInt iStepSizeTable[89];
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TBool iBufferStep;
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TInt iBuffer;
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TInt iChannels;
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};
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// Internal to Symbian
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class TMMFImaAdpcmTo16PcmCodecOld : public TMMFImaAdpcmBaseCodecOld
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{
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public:
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inline TMMFImaAdpcmTo16PcmCodecOld(const TInt aChannels);
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virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples);
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};
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// Internal to Symbian
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class TMMF16PcmToImaAdpcmCodecOld : public TMMFImaAdpcmBaseCodecOld
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{
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public:
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inline TMMF16PcmToImaAdpcmCodecOld(const TInt aChannels);
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virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples);
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};
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inline TMMFAudioCodecBaseOld::TMMFAudioCodecBaseOld()
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{}
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inline TMMFImaAdpcmBaseCodecOld::TMMFImaAdpcmBaseCodecOld(const TInt aChannels)
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: iBufferStep(ETrue), iBuffer(0), iChannels(aChannels) {}
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inline TMMFImaAdpcmCodecStateOld::TMMFImaAdpcmCodecStateOld()
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: iPredicted(0), iIndex(0) {}
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inline TMMFImaAdpcmCodecStateOld::TMMFImaAdpcmCodecStateOld(TInt16 aPredicted, TUint8 aIndex)
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: iPredicted(aPredicted), iIndex(aIndex) {}
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inline void TMMFImaAdpcmBaseCodecOld::SetState(const TMMFImaAdpcmCodecStateOld& aState)
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{ iState[0] = aState; }
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inline const TMMFImaAdpcmCodecStateOld& TMMFImaAdpcmBaseCodecOld::GetState()
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{ return iState[0]; }
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inline void TMMFImaAdpcmBaseCodecOld::SetState(const TMMFImaAdpcmCodecStateOld& aState, const TInt aChannel)
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{ iState[aChannel] = aState; }
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inline const TMMFImaAdpcmCodecStateOld& TMMFImaAdpcmBaseCodecOld::GetState(const TInt aChannel)
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{ return iState[aChannel]; }
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inline TMMFImaAdpcmTo16PcmCodecOld::TMMFImaAdpcmTo16PcmCodecOld(const TInt aChannels)
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:TMMFImaAdpcmBaseCodecOld(aChannels)
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{}
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inline TMMF16PcmToImaAdpcmCodecOld::TMMF16PcmToImaAdpcmCodecOld(const TInt aChannels)
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:TMMFImaAdpcmBaseCodecOld(aChannels)
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{}
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#endif
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