sl@0: /*
sl@0: * Copyright (c) 2002-2005 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:
sl@0: *
sl@0: */
sl@0: 
sl@0: #ifndef __MMF_TMMFAUDIO_PCM16_TO_IMAADPCM_CODEC_H__
sl@0: #define __MMF_TMMFAUDIO_PCM16_TO_IMAASPCM_CODEC_H__
sl@0: #include <e32std.h>
sl@0: #include "MMFAudioCodecBase.h"
sl@0: #include "MMFImaAudioCodecState.h"
sl@0: 
sl@0: /**
sl@0: *
sl@0: * TMMFAudioPcm16ToImaAdpcmCodec 
sl@0: *
sl@0: */
sl@0: const TInt KImaAdpcmCodecIndexTableSize = 16;
sl@0: const TInt KImaAdpcmCodecStepTableSize = 89;
sl@0: 
sl@0: /*
sl@0: *
sl@0: * class TMMFAudioPcm16ToImaAdpcmCodec
sl@0: *
sl@0: */
sl@0: class TMMFAudioPcm16ToImaAdpcmCodec : public TMMFAudioCodecBase
sl@0: 	{
sl@0: public:
sl@0: 	inline TMMFAudioPcm16ToImaAdpcmCodec();
sl@0: 	IMPORT_C virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples);
sl@0: 	IMPORT_C void SetState(const TMMFImaAdpcmCodecState& aState);
sl@0: 	IMPORT_C const TMMFImaAdpcmCodecState& GetState();
sl@0: private:
sl@0: 	TMMFImaAdpcmCodecState iState;	//supports mono only
sl@0: private:
sl@0: 	static const TInt KIndexTable[KImaAdpcmCodecIndexTableSize];
sl@0: 	static const TInt KStepSizeTable[KImaAdpcmCodecStepTableSize];
sl@0: 	TBool iBufferStep;
sl@0: 	TInt iBuffer;
sl@0: 	};
sl@0: 
sl@0: inline TMMFAudioPcm16ToImaAdpcmCodec::TMMFAudioPcm16ToImaAdpcmCodec() : iBufferStep(ETrue), iBuffer(0) {}
sl@0: #endif //__MMF_TMMFAUDIO_PCM16_TO_IMAADPCM_CODEC_H__