--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/audioeditorengine/codecs/AAC/inc/ProcAACFrameHandler.h	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,119 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "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:
+* Ixonos Plc
+*
+* Description:
+*
+*/
+
+
+
+#ifndef __CPROCAACFRAMEHANDLER_H__
+#define __CPROCAACFRAMEHANDLER_H__
+
+#include <e32base.h>
+#include "AudCommon.h"
+#include "ProcConstants.h"
+#include "ProcFrameHandler.h"
+
+#include "AACConstants.h"
+#include "AACAPI.h"
+
+class CProcAACFrameHandler : public CProcFrameHandler 
+    {
+
+public:
+
+    // aGain -40(dB) - +20(dB)
+    virtual TBool ManipulateGainL(const HBufC8* aFrameIn, HBufC8*& aFrameOut, TInt8 aGain);
+
+    // From base class
+    virtual TBool GetGainL(const HBufC8* aFrame, RArray<TInt>& aGains, TInt& aMaxGain) const;
+    virtual TBool GetNormalizingMargin(const HBufC8* aFrame, TInt8& aMargin) const;
+
+    virtual ~CProcAACFrameHandler();
+
+    static CProcAACFrameHandler* NewL(TAACFrameHandlerInfo aAACInfo);
+    static CProcAACFrameHandler* NewLC(TAACFrameHandlerInfo aAACInfo);
+    
+    /*
+    *
+    * If there are several AAC frames in a row, their start positions and
+    * lengths can be parsed with this function
+    *
+    * @param aFrame                input frame to be parsed
+    * @param aFrameStarts        starting locations of each frame
+    * @param aFrameLengths        frame lengths of each frame
+    */
+    
+    TBool ParseFramesL(HBufC8* aFrame, RArray<TInt>& aFrameStarts, RArray<TInt>& aFrameLengths);
+
+    /*
+    * GetEnhancedAACPlusParametersL
+    *
+    * Fills in aacPlus related fields in aProperties
+    *
+    *
+    * @param    buf            audio data
+    * @param    bufLen        lenght of "buf"
+    * @param     aProperties    properties to fill in
+    * @param    aAACInfo    info for AAC framehandler    
+    *
+    */
+
+    static void GetEnhancedAACPlusParametersL(TUint8* buf, TInt bufLen, 
+                                            TAudFileProperties* aProperties, 
+                                            TAACFrameHandlerInfo *aAACInfo);
+
+    /*
+    * CalculateNumberOfHeaderBytes returns the number of ADTS header bytes 
+    * and the number of data blocks in a given frame
+    *
+    * @param    aFrame    input frame
+    * @param    aNumBlocks (output) number of data blocks in the frame (usually 1)
+    *
+    * @return    the number of ADTS header bytes
+    */
+
+    TInt CalculateNumberOfHeaderBytes(const HBufC8* aFrame, TInt& aNumBlocksInFrame) const;
+
+private:
+
+    // constructL
+    void ConstructL(TAACFrameHandlerInfo aAACInfo);
+    
+    // c++ constructor
+    CProcAACFrameHandler();
+
+    // updates the ADTS header if the lenght has 
+    // been changed after modifying AACPlus gain
+    TBool UpdateHeaderL(HBufC8* aFrame);
+
+private:
+
+    // AAC decoder handle
+    CAACAudDec* iDecHandle; 
+    
+    // stores the starting points of raw data blocks if there are 
+    // more than one data block in AAC frame
+    RArray<TInt> iFrameStarts;
+    
+    // lenghts of the data blocks 
+    RArray<TInt> iFrameLengths;
+    
+    // info needed for AAC decoder handle creation
+    TAACFrameHandlerInfo iAACInfo;
+    
+    };
+
+#endif