os/mm/mmlibs/mmfw/Codecs/Inc/MMFCodecCommon/MMFAudioSPcm16ToMuLawCodec.h
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
     1 /*
     2 * Copyright (c) 2002-2003 Nokia Corporation and/or its subsidiary(-ies).
     3 * All rights reserved.
     4 * This component and the accompanying materials are made available
     5 * under the terms of "Eclipse Public License v1.0"
     6 * which accompanies this distribution, and is available
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
     8 *
     9 * Initial Contributors:
    10 * Nokia Corporation - initial contribution.
    11 *
    12 * Contributors:
    13 *
    14 * Description:
    15 *
    16 */
    17 
    18 #ifndef __MMF_TMMF_AUDIO_SPCM16_TO_MULAW_CODEC_H__
    19 #define __MMF_TMMF_AUDIO_SPCM16_TO_MULAW_CODEC_H__
    20 #include "MMFAudioCodecBase.h" 
    21 
    22 const TInt KMda16PcmToMulawExpLutSize = 256;
    23 const TInt KMda16PcmToMulawClip		  = 32635;
    24 const TInt KMda16PcmToMulawBias		  = 0x84;
    25 
    26 /*
    27 *
    28 * class TMMFAudioSPcm16ToMuLawCodec
    29 *
    30 */
    31 class TMMFAudioSPcm16ToMuLawCodec : public TMMFAudioCodecBase
    32 	{
    33 public:
    34 	IMPORT_C virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples);
    35 private:
    36 	TUint8 PcmSampleToMuLaw(TInt aPcm);
    37 private:
    38 	const static TInt8 KExpLut[KMda16PcmToMulawExpLutSize];
    39 	};
    40 
    41 #endif //__MMF_TMMF_AUDIO_SPCM16_TO_MULAW_CODEC_H__