--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/audioeditorengine/codecs/MP4/inc/ProcMP4InFileHandler.h	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,198 @@
+/*
+* 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 __CPROCMP4INFILEHANDLER_H__
+#define __CPROCMP4INFILEHANDLER_H__
+
+#include <e32base.h>
+#include <f32file.h>
+#include "mp4lib.h"
+
+#include "AudCommon.h"
+#include "ProcConstants.h"
+#include "ProcInFileHandler.h"
+//#include "mp4aud.h"
+#include "AACConstants.h"
+
+#include "ProcDecoder.h"
+
+
+class CMP4Parser;
+
+class CProcMP4InFileHandler: public CProcInFileHandler 
+    {
+
+public:
+
+    /*
+    *
+    * Constructors & destructor
+    * 
+    */
+
+    static CProcMP4InFileHandler* NewL(const TDesC& aFileName, RFile* aFileHandle,
+                                        CAudClip* aClip, TInt aReadBufferSize,
+                                            TInt aTargetSampleRate = 0, 
+                                            TChannelMode aChannelMode = EAudSingleChannel);
+                                            
+    static CProcMP4InFileHandler* NewLC(const TDesC& aFileName,  RFile* aFileHandle,
+                                        CAudClip* aClip, TInt aReadBufferSize,
+                                            TInt aTargetSampleRate = 0, 
+                                            TChannelMode aChannelMode = EAudSingleChannel);
+    virtual ~CProcMP4InFileHandler();
+
+    // 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();
+
+    virtual TBool SetNormalizingGainL(const CProcFrameHandler* aFrameHandler);
+
+    // <-------------------------------------- from base class
+
+    /*
+    *
+    * Used to retrieve information for frame handler
+    *
+    * @param    aBytes (output) decoder specific info
+    * @param     aBufferSize        maximum allowed aBytes
+    *
+    * @return    ETrue     if successful (memory reserved)
+    *            EFalse    if not successful (no memory reserved)
+    *
+    * NOTE: The caller is responsible for releasing the memory!
+    */
+    virtual TBool ReadAudioDecoderSpecificInfoL(HBufC8*& aBytes, TInt aBufferSize);
+    
+    /*
+    * Reads the time scale of the MP4 file
+    *
+    * @param    aTimescale    timescale
+    *
+    */
+    virtual TBool ReadTimeScale(mp4_u32& aTimescale);
+
+    /*
+    * Reads the audio description of the MP4 file
+    *
+    * @param    aAudiolength            length of the clip
+    * @param    aAudiotype                type of the clip
+    * @param    aFramespersample        number of frames in sample
+    * @param    aTimescale                timescale
+    * @param    aAveragebitrate            average bitrate
+    * 
+    */
+    MP4Err ParseRequestAudioDescription(mp4_u32 *aAudiolength,
+                                           mp4_u32 *aAudiotype,
+                                           mp4_u8 *aFramespersample,
+                                           mp4_u32 *aTimescale,
+                                           mp4_u32 *aAveragebitrate);
+
+    /*
+    *
+    * Returns AAC info
+    * @param    aAACInfo    AAC info
+    *
+    */
+    TBool GetInfoForFrameHandler(TAACFrameHandlerInfo& aAACInfo);
+
+    
+
+
+    
+
+private:
+
+    // constructL
+    void ConstructL(const TDesC& aFileName,  RFile* aFileHandle, CAudClip* aClip, 
+                    TInt aReadBufferSize, TInt aTargetSampleRate = 0, 
+                    TChannelMode aChannelMode = EAudSingleChannel);
+    
+    // c++ construtor
+    CProcMP4InFileHandler();
+
+    // gets audio frame info
+    TBool GetAudioFrameInfoL(TInt& aFrameAmount, TInt& aAverageFrameDuration, TInt& aAverageFrameSize,
+                            TAudFileProperties* aProperties);
+
+    TBool GetEncAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime);
+    
+    /*
+    * Reads one amr frame from iReadBuffer and updates iReadBufferPos
+    *
+    * @param aOneAMRFrame        amr frame in return
+    *
+    * @return                     ETrue if successful, the caller must release the memory
+    *                            EFalse if frame can not be read, no need to release memory
+    */
+    TBool ReadOneAMRFrameL(HBufC8*& aOneAMRFrame);
+    
+    TBool ReadOneAWBFrameL(HBufC8*& aOneAWBFrame);
+    
+private:
+
+    // Handle to MP4Lib
+    MP4Handle iParser;
+    
+    // timestamp of a previous frame
+    TInt32 iLastTimeStamp;
+
+    // information for frame handler
+    TAACFrameHandlerInfo* iFrameInfo;
+
+    // read buffer
+    mp4_u8 *iMP4ReadBuffer;
+    // read buffer size
+    TInt iMP4ReadBufferSize;
+    // position of the read buffer
+    TInt iMP4ReadBufferPos;
+    
+
+
+
+protected:
+    
+    
+    
+    };
+
+#endif