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/*
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* Copyright (c) 2002-2003 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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*/
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#ifndef __MMF_TMMFAUDIO_CODEC_BASE_H__
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#define __MMF_TMMFAUDIO_CODEC_BASE_H__
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#include <e32std.h>
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#include "MMFAudioDataSettings.h"
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const TInt KClamp = 32768;
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const TInt KMaskSign16bit = 0x8000;
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const TInt KMaskSign8bit = 0x80;
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const TInt KAndMask8bit = 0xff;
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const TInt KMaxImaAdpcmTableEntries = 88;
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const TUint KImaAdpcmBlockAlign = 256;
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//samples per block = [((block align - (4 * nChannels)) * 8) / (bits per sample * nChannels)] + 1
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const TUint KImaAdpcmSamplesPerBlock = ((KImaAdpcmBlockAlign - 4)*2) + 1; //505
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const TUint KImaAdpcmStereoSamplesPerBlock = (KImaAdpcmBlockAlign - 8) + 1; //249
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const TUint KImaAdpcmTempBufferSize = KImaAdpcmSamplesPerBlock*2;
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const TUint KImaAdpcmStereoTempBufferSize = KImaAdpcmStereoSamplesPerBlock*4;
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//Gsm coded Frame size
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const TInt KCodedBufferSize = 152;
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// Base of Audio codecs
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/*
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*
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* class TMMFAudioCodecBase
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*
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*/
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class TMMFAudioCodecBase
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{
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public:
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inline TMMFAudioCodecBase();
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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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inline TMMFAudioCodecBase::TMMFAudioCodecBase()
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{}
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#endif //__MMF_TMMFAUDIO_CODEC_BASE_H__
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