--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmlibs/mmfw/Codecs/Inc/MMFCodecCommon/MMFAudioCodecBase.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,56 @@
+/*
+* Copyright (c) 2002-2003 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#ifndef __MMF_TMMFAUDIO_CODEC_BASE_H__
+#define __MMF_TMMFAUDIO_CODEC_BASE_H__
+#include <e32std.h>
+#include "MMFAudioDataSettings.h"
+
+const TInt KClamp = 32768;
+const TInt KMaskSign16bit = 0x8000;
+const TInt KMaskSign8bit = 0x80;
+const TInt KAndMask8bit = 0xff;
+const TInt KMaxImaAdpcmTableEntries = 88;
+
+const TUint KImaAdpcmBlockAlign = 256;
+//samples per block = [((block align - (4 * nChannels)) * 8) / (bits per sample * nChannels)] + 1
+const TUint KImaAdpcmSamplesPerBlock = ((KImaAdpcmBlockAlign - 4)*2) + 1;	//505
+const TUint KImaAdpcmStereoSamplesPerBlock = (KImaAdpcmBlockAlign - 8) + 1; //249
+const TUint KImaAdpcmTempBufferSize = KImaAdpcmSamplesPerBlock*2;
+const TUint KImaAdpcmStereoTempBufferSize = KImaAdpcmStereoSamplesPerBlock*4;
+
+//Gsm coded Frame size
+const TInt KCodedBufferSize = 152;
+
+// Base of Audio codecs
+/*
+*
+* class TMMFAudioCodecBase
+*
+*/
+class TMMFAudioCodecBase
+	{
+public:
+	inline TMMFAudioCodecBase();
+	//
+	virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples)=0;
+	};
+
+inline TMMFAudioCodecBase::TMMFAudioCodecBase()
+	{}
+
+#endif //__MMF_TMMFAUDIO_CODEC_BASE_H__