os/mm/mmlibs/mmfw/Codecs/Src/MMFCodecCommon/MMFAudioPcm8ToPcm16Codec.cpp
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution.
     1 // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
     2 // All rights reserved.
     3 // This component and the accompanying materials are made available
     4 // under the terms of "Eclipse Public License v1.0"
     5 // which accompanies this distribution, and is available
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
     7 //
     8 // Initial Contributors:
     9 // Nokia Corporation - initial contribution.
    10 //
    11 // Contributors:
    12 //
    13 // Description:
    14 //
    15 
    16 #include "MMFAudioPcm8ToPcm16Codec.h"
    17 
    18 #include <e32base.h>
    19 #include <e32math.h>
    20 #include <f32file.h>
    21 #include <s32file.h>
    22 
    23 /**
    24 *
    25 * Convert
    26 * @param aSrc
    27 * @param aDst
    28 * @param aSamples
    29 * Signed 8bit to Signed 16bit
    30 */
    31 EXPORT_C void TMMFAudioPcm8ToPcm16Codec::Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples)
    32 	{
    33 	TInt16 s16;
    34 	while (aSamples--)
    35 		{ 
    36 		s16 = static_cast<TInt16>((*aSrc++)<<8);
    37 		*aDst++ = STATIC_CAST( TUint8, s16&KAndMask8bit);
    38 		*aDst++ = STATIC_CAST( TUint8, (s16>>8)&KAndMask8bit);		
    39 		}
    40 	}