--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/audioeditorengine/codecs/AAC/inc/ProcADTSInFileHandler.h	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,161 @@
+/*
+* 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 __CPROCADTSINFILEHANDLER_H__
+#define __CPROCADTSINFILEHANDLER_H__
+
+#include <e32base.h>
+#include <f32file.h>
+#include "AudCommon.h"
+#include "ProcConstants.h"
+#include "ProcInFileHandler.h"
+#include "AACConstants.h"
+#include "ProcDecoder.h"
+
+
+
+class CProcADTSInFileHandler: public CProcInFileHandler 
+    {
+
+public:
+
+    static CProcADTSInFileHandler* NewL(const TDesC& aFileName, 
+                                        RFile* aFileHandle,
+                                        CAudClip* aClip, TInt aReadBufferSize, 
+                                        TInt aTargetSampleRate = 0,
+                                        TChannelMode aChannelMode = EAudSingleChannel);
+                                        
+    static CProcADTSInFileHandler* NewLC(const TDesC& aFileName, 
+                                         RFile* aFileHandle,
+                                         CAudClip* aClip, TInt aReadBufferSize,
+                                         TInt aTargetSampleRate = 0,
+                                         TChannelMode aChannelMode = EAudSingleChannel);
+
+
+    // From base class
+
+    void GetPropertiesL(TAudFileProperties* aProperties);
+    
+    /**
+    * Seeks a certain audio frame for reading
+    *
+    * Possible leave codes:  
+    *    
+    * @param aTime            time from the beginning of file in milliseconds
+    *
+    * @return    ETrue if successful
+    *            EFalse if beyond the file
+    */
+    TBool SeekAudioFrame(TInt32 aTime);
+
+    
+    /**
+    * Seeks a cut in audio frame for reading
+    *
+    * Possible leave codes:  
+    *    
+    *
+    * @return    ETrue if successful
+    *                
+    */
+    TBool SeekCutInFrame();
+
+    /**
+    *
+    * Sets the normalizing gain
+    *
+    * @param    aFrameHandler    AAC frame handler
+    *
+    * @return    ETrue if successful
+    */
+    TBool SetNormalizingGainL(const CProcFrameHandler* aFrameHandler);
+
+    /*
+    * Fills in aac info
+    *
+    * @param     aAACInfo    aac info
+    *
+    * @return    ETrue if successful
+    */
+    TBool GetInfoForFrameHandler(TAACFrameHandlerInfo& aAACInfo);
+
+
+    /**
+    * Generates decoder specific information for MP4/3GP files
+    * 
+    * The caller is responsible for releasing aDecSpecInfo 
+    *
+    * @param    aBytes    decoder specific info 
+    * @param    aBufferSize        max size of decSpecInfo
+    *
+    * @return    ETrue  if info was generated
+    *            EFalse if info was not generated (no need to release aFrame)
+    */
+    TBool ReadAudioDecoderSpecificInfoL(HBufC8*& aBytes, TInt aBufferSize);
+
+
+    ~CProcADTSInFileHandler();
+
+
+    
+
+private:
+
+    // constructL    
+    void ConstructL(const TDesC& aFileName, RFile* aFileHandle, CAudClip* aClip, TInt aReadBufferSize,
+                    TInt aTargetSampleRate = 0, TChannelMode aChannelMode = EAudSingleChannel);
+                    
+    virtual TBool GetEncAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime);
+    
+    // C++ constructor
+    CProcADTSInFileHandler();
+    
+    // Find the first AAC frame
+    // There might be some stuff in the file before audio data (e.g. ID3 header)
+    TBool FindFirstAACFrame();
+    
+    // calculates the frame length based of 4th, 5th and 6th byte of ADTS header
+    TUint CalculateAACFrameLength(TUint8 byte4, TUint8 byte5, TUint8 byte6);
+
+    // fills in fields of aProperties based on ADTS header
+    TBool ReadHeaderInformation(TAudFileProperties* aProperties);
+
+    // fills in the rest of the fields
+    TBool ReadOtherInformationL(TAudFileProperties* aProperties);
+
+private:
+
+    // info for frame handler
+    TAACFrameHandlerInfo* iFrameInfo;
+
+    // MP4 decoder specific info
+    HBufC8* iMP4DecSpecInfo;
+
+    // offset of the first ADTS frame in a file
+    TUint32 iFirstFrame;
+    
+    // flag to indicate whether the file can be parsed
+    TBool iSupportedFile;
+
+    // remainder if audio duration can't be handled accurately in TInt milliseconds, depends on sampling rate
+    TReal iAACFrameLenRemainderMilli;
+    
+    };
+
+#endif