os/mm/mmplugins/lib3gp/impl/src/filewriter.cpp
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
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// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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// INCLUDE FILES
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#include <e32base.h>
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#include <f32file.h>
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#include "mp4atom.h"
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#include "filewriter.h"
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// MACROS
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// Debug print macro
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#ifdef _DEBUG
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#include <e32svr.h>
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//#define PRINT(x) RDebug::Print x
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#define PRINT(x)
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#else
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#define PRINT(x)
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#endif
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CFileWriter::CFileWriter
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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CFileWriter::CFileWriter( TInt aInitSetSize, TInt aOutputBufferSizeSmall, TInt aOutputBufferSizeLarge ):
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	CActive( EPriorityHigh ),
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	iSetSize( aInitSetSize ),
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	iOutputBufferSizeSmall( aOutputBufferSizeSmall ),
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	iOutputBufferSizeLarge( aOutputBufferSizeLarge )
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    {
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    }
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// -----------------------------------------------------------------------------
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// CFileWriter::ConstructL
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CFileWriter::ConstructL( RFile64& aFile )
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    {
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    PRINT((_L("CFileWriter::ConstructL() in")));         
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    iFlush = EFalse;
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    iError = KErrNone;
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    iOutputFile = &aFile;
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    iWritingStarted = EFalse;
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    iOutputBufferSize = KFileWriterBufferSizeSmall;
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    iMaxOutputBufHardLimit = KFileWriterHardBufLimit;
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    iMaxOutputBufSoftLimit = KFileWriterSoftBufLimit;
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    iMemReadyForWriting = EFalse;
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    iInputBuf = NULL;
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    iEmptyBufferQueue.Reset();
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    iFullBufferQueue.Reset();
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    AllocateBuffersL();
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    CActiveScheduler::Add(this);
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    PRINT((_L("CFileWriter::ConstructL() out")));         
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    }
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// -----------------------------------------------------------------------------
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// CFileWriter::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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CFileWriter* CFileWriter::NewL( RFile64& aFile, TInt aInitSetSize, TInt aOutputBufferSizeSmall, TInt aOutputBufferSizeLarge )
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    {
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    CFileWriter* self = new(ELeave) CFileWriter( aInitSetSize, aOutputBufferSizeSmall, aOutputBufferSizeLarge );
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    CleanupStack::PushL(self);
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    self->ConstructL( aFile );
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    CleanupStack::Pop(self);
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    return self;
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    }
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// Destructor
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CFileWriter::~CFileWriter()
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    {
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    PRINT((_L("CFileWriter::~CFileWriter() in")));         
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    if ( IsActive() )
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        {
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        if ( iAsyncWritingOngoing )
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            {
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            Cancel();    
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            }
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        else
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            {
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            TRequestStatus* status = &iStatus;
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            User::RequestComplete( status, KErrNone );
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            Cancel();
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            }
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        }
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    if ( iInputBuf )
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        {
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        delete iInputBuf;
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        }
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    iEmptyBufferQueue.ResetAndDestroy();
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    iFullBufferQueue.ResetAndDestroy();
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    PRINT((_L("CFileWriter::~CFileWriter() out")));         
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    }
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// -----------------------------------------------------------------------------
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// CFileWriter::UpdateOutputFileSize()
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// Updates output file size and reserves extra space for following writing 
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// if iSetSize is set.  
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// Takes into account if the position in the file was changed.
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// -----------------------------------------------------------------------------
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//
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void CFileWriter::UpdateOutputFileSize()
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    {
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    TInt64 pos = 0;
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    PRINT((_L("e_cfilewriter_write_updateoutputfilesize_seek 1")));
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    iOutputFile->Seek(ESeekCurrent, pos);
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    PRINT((_L("e_cfilewriter_write_updateoutputfilesize_seek 0")));
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    PRINT((_L("CFileWriter::UpdateOutputFileSize() pos: %Ld"), pos));
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    PRINT((_L("CFileWriter::UpdateOutputFileSize() iOutputFileSize: %Ld"), iOutputFileSize));
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    PRINT((_L("CFileWriter::UpdateOutputFileSize() iSetSize: %Ld"), iSetSize));
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    if (pos > iOutputFileSize) 
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        {
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        iOutputFileSize = pos;
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        }
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    while (iOutputFileSize >= iSetSize) 
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        {
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        iSetSize += static_cast<TInt64>(iOutputBufferSize) * (static_cast<TInt64>(iMaxOutputBufHardLimit) >> 1); 
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        PRINT((_L("e_cfilewriter_updateoutputfilesize_setsize 1")));                     
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        iOutputFile->SetSize( iSetSize );
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        PRINT((_L("e_cfilewriter_updateoutputfilesize_setsize 0")));                     
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        }
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    }
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// -----------------------------------------------------------------------------
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// CFileWriter::Write( const TDesC8& aBuf )
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// Writes incoming buffer data to internal buffers for writing to disk.
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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TInt CFileWriter::Write( const TDesC8& aBuf )
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    {
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    PRINT(_L("CFileWriter::Write() in"));
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    PRINT((_L("e_cfilewriter_write 1")));
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    iWritingStarted = ETrue;
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    if ( !iMemReadyForWriting )
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    	{
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    	return KErrNoMemory;
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    	}
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    PRINT((_L("e_cfilewriter_write_adddatatobuffer 1")));	
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    TInt error = AddDataToBuffer( aBuf );
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    PRINT((_L("e_cfilewriter_write_adddatatobuffer 0")));	    
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    if ( error != KErrNone )
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        {
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        PRINT((_L("CFileWriter::Write() buffer write error: %d"), error));         
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        return error;
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        }
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    PRINT((_L("CFileWriter::Write() Write Buffer, Status: Full:%d Empty:%d "), 
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                    iFullBufferQueue.Count(), iEmptyBufferQueue.Count() ));
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    if ( iAsyncWritingOngoing )
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        {
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        if ( iFullBufferQueue.Count() >= iMaxOutputBufHardLimit )
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            {
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            PRINT((_L("CFileWriter::Write() Waiting async write to complete")));
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			PRINT((_L("e_cfilewriter_write_wait_async 1")));            
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            User::WaitForRequest( iStatus );
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			PRINT((_L("e_cfilewriter_write_wait_async 0")));            
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            PRINT((_L("CFileWriter::Write() Async write done")));
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            TRAP(error, RunL());
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            if (error != KErrNone)
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            	{
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            	PRINT((_L("CFileWriter::Write() call runL leave, error: %d"), error));         
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                return error;
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            	}
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            }
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        }
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    else
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        {
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        if ( iFullBufferQueue.Count() )
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            {
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            PRINT(_L("CFileWriter::Write() writing async"));                     
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            PRINT((_L("e_cfilewriter_write_startwrite 1")));                     
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            iOutputFile->Write( *iFullBufferQueue[0], iStatus );
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            PRINT((_L("e_cfilewriter_write_startwrite 0")));
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            iAsyncWritingOngoing = ETrue;
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            if ( !IsActive() )
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                {
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                SetActive();
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                }
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            }
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        }
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    PRINT(_L("CFileWriter::Write() out"));
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    PRINT((_L("e_cfilewriter_write 0")));    
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    return error;
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    }
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// -----------------------------------------------------------------------------
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// CFileWriter::Flush( const TDesC8& aBuf )
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// Flush internal buffers to disk.
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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TInt CFileWriter::Flush( const TDesC8& aBuf )
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    {
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    PRINT(_L("CFileWriter::Flush() in"));
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    PRINT((_L("e_cfilewriter_flush 1")));
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 	if ( !iMemReadyForWriting )
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 		{
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 		return KErrNoMemory;
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 		}
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    iWritingStarted = ETrue;
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    PRINT((_L("e_cfilewriter_flush_adddatatobuf 1")));
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    TInt error = AddDataToBuffer( aBuf );
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    if ( error != KErrNone )
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        {
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        return error;
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        }
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	PRINT((_L("e_cfilewriter_flush_adddatatobuf 0")));        
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    PRINT((_L("CFileWriter::Flush() FullCount: %d "), iFullBufferQueue.Count()));
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    iFlush = ETrue;
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    if ( iAsyncWritingOngoing )
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        {
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        PRINT((_L("CFileWriter::Flush() Waiting async write to complete")));
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        PRINT((_L("e_cfilewriter_flush_waitasynctostop 1")));
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        User::WaitForRequest( iStatus );
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        PRINT((_L("e_cfilewriter_flush_waitasynctostop 0")));
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        PRINT((_L("CFileWriter::Flush() Async write done, flushing")));
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        TRAP(error, RunL());
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        if (error != KErrNone)
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        	{
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        	PRINT((_L("CFileWriter::Flush() call runL leave, error: %d"), error));         
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            return error;
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        	}
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        }
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    while ( iFullBufferQueue.Count() )
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        {
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        PRINT((_L("e_cfilewriter_flush_writequeue_sync 1")));
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        error = iOutputFile->Write( *iFullBufferQueue[0] );
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        PRINT((_L("e_cfilewriter_flush_writequeue_sync 0")));
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        PRINT((_L("e_cfilewriter_flush_remove_buf 1")));
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        if ( error == KErrNone )
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            {
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            UpdateOutputFileSize();
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            iFullBufferQueue[0]->Des().Zero();
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            if ( iEmptyBufferQueue.Append( iFullBufferQueue[0] ) )
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                {
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                PRINT(_L("CFileWriter::Flush() Append failed"));
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                delete ( iFullBufferQueue[0] ); 
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                }
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            iFullBufferQueue.Remove( 0 );
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            }
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        else
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            {
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            PRINT((_L("CFileWriter::Flush() fullBufQueue write failed, error: %d"), error));
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            iFlush = EFalse;
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            return error;
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            }
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        PRINT((_L("e_cfilewriter_flush_remove_buf 0")));    
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        }
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    if ( iInputBuf->Length() )
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        {
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        PRINT((_L("e_cfilewriter_flush_writeinput_sync 1")));
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        error = iOutputFile->Write( *iInputBuf );
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        PRINT((_L("e_cfilewriter_flush_writeinput_sync 0")));
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        if ( error == KErrNone )
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            {
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            UpdateOutputFileSize();
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            iInputBuf->Des().Zero();
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            }
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        else
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            {
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            PRINT((_L("CFileWriter::Flush() inputbuf write failed, error: %d"), error));
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            iFlush = EFalse;
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            return error;
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            }
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        }
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    iFlush = EFalse;
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    PRINT((_L("CFileWriter::Flush() FullCount: %d <= Should be 0"), iFullBufferQueue.Count()));
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    PRINT(_L("CFileWriter::Flush() out"));
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    PRINT((_L("e_cfilewriter_flush 0")));    
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    return KErrNone;
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    }
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// -----------------------------------------------------------------------------
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// CFileWriter::SetOutputBufferSize( TOutputBufferSize aBufferSize )
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// Set output buffer sizes.
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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TInt CFileWriter::SetOutputBufferSize( TOutputBufferSize aBufferSize, MP4Handle aHandle )
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    {
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    MP4HandleImp handle = (MP4HandleImp)aHandle;    
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    TInt size = 0;
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    if ( iWritingStarted )
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        {
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        return KErrNotReady;
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        }
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    if ( aBufferSize == EBufferSizeSmall ) 
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        {
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        size = iOutputBufferSizeSmall;
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        }
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    else if ( aBufferSize == EBufferSizeLarge ) 
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        {
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        size = iOutputBufferSizeLarge;
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        }
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    else if ( aBufferSize == EBufferSizeCustom )
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        {
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        size = handle->mediaWriteBufferSize;
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        }
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    else
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        {
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        return KErrArgument;    
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        }
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    if ( size == iOutputBufferSize )
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        {
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        return KErrNone;
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        }
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    else
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        {
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        iOutputBufferSize = size;
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        }
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    iMemReadyForWriting = EFalse;
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    delete iInputBuf;
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    iInputBuf = NULL;
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    iEmptyBufferQueue.ResetAndDestroy();
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    iFullBufferQueue.ResetAndDestroy();
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    TRAPD(err, AllocateBuffersL() );
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    return err;
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    }
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// -----------------------------------------------------------------------------
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// CFileWriter::SetOutputBufferCount( MP4Handle aHandle )
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// Set output buffer count.
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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void CFileWriter::SetOutputBufferCount( MP4Handle aHandle )
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    {
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    MP4HandleImp handle = (MP4HandleImp)aHandle;    
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    if (  handle->writeBufferMaxCount >= 6 )     
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        {
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        iMaxOutputBufHardLimit = handle->writeBufferMaxCount;
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        iMaxOutputBufSoftLimit = KFileWriterMinBufferCount + ((iMaxOutputBufHardLimit-KFileWriterMinBufferCount)/2);
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        }
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    }
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// -----------------------------------------------------------------------------
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// CFileWriter::AddDataToBuffer( const TDesC8& aBuf )
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// Writes incoming data to internal buffers and buffer queues..
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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TInt CFileWriter::AddDataToBuffer( const TDesC8& aBuf )
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    {
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    PRINT(_L("CFileWriter::AddDataToBuffer() in"));
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    TInt byteswritten = 0;
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    TInt numbytes = 0;
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    TInt available = 0; // Available bytes in write buffer
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    TInt error = KErrNone;
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    if ( iError != KErrNone )
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        {
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        PRINT((_L("CFileWriter::AddDataToBuffer() out, RunL iError: %d"), iError));
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        return iError;
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        }
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    if ( iInputBuf == NULL )
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    	{
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    	return KErrNoMemory;
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    	}
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    while (byteswritten < aBuf.Length() )
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        {
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        available = iOutputBufferSize - iInputBuf->Length();
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        if (available > 0)
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            {
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            numbytes = aBuf.Length() - byteswritten;
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            if (numbytes > available)
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                {
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                numbytes = available;
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                }
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            iInputBuf->Des().Append( aBuf.Mid( byteswritten, numbytes ) );
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            byteswritten += numbytes;
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            }
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        else // Buffer is full, write it to disk
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            {
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            // input is full, move full inputbuf to full buf queue
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            if ( iFullBufferQueue.Append( iInputBuf ) != KErrNone )
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                {
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                PRINT(_L("CFileWriter::AddDataToBuffer() Append failed"));
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                delete iInputBuf;
sl@0
   433
                iInputBuf = NULL;
sl@0
   434
                }
sl@0
   435
            if ( iEmptyBufferQueue.Count() == 0 )
sl@0
   436
                {
sl@0
   437
                // no empty buffers in queue, allocating new one
sl@0
   438
                TRAP(error, iInputBuf = HBufC8::NewL( iOutputBufferSize ));
sl@0
   439
                if ( error != KErrNone )
sl@0
   440
                    {
sl@0
   441
                    PRINT((_L("CFileWriter::AddDataToBuffer(), memory alloc failed: %d"), error));
sl@0
   442
                    iInputBuf = NULL;
sl@0
   443
                    iError = error;
sl@0
   444
                    break;
sl@0
   445
                    }
sl@0
   446
                }
sl@0
   447
            else
sl@0
   448
                {
sl@0
   449
                iInputBuf = iEmptyBufferQueue[ 0 ];
sl@0
   450
                iEmptyBufferQueue.Remove( 0 );
sl@0
   451
                }
sl@0
   452
            }
sl@0
   453
        }
sl@0
   454
sl@0
   455
    PRINT((_L("CFileWriter::AddDataToBuffer() out, error: %d"), error));
sl@0
   456
    return error;
sl@0
   457
    }
sl@0
   458
sl@0
   459
// -----------------------------------------------------------------------------
sl@0
   460
// CFileWriter::AllocateBuffersL()
sl@0
   461
// Allocates input and output buffers.
sl@0
   462
// (other items were commented in a header).
sl@0
   463
// -----------------------------------------------------------------------------
sl@0
   464
//
sl@0
   465
void CFileWriter::AllocateBuffersL()
sl@0
   466
    {
sl@0
   467
    PRINT((_L("CFileWriter::AllocateBuffersL() in, outbufsize: %d"), iOutputBufferSize));
sl@0
   468
    HBufC8* buf = NULL;
sl@0
   469
    TInt err = 0;
sl@0
   470
    iMemReadyForWriting = EFalse;
sl@0
   471
sl@0
   472
    iInputBuf = HBufC8::NewL( iOutputBufferSize );
sl@0
   473
    for( TInt i=0; i<KFileWriterMinBufferCount; i++ )
sl@0
   474
        {
sl@0
   475
        buf = HBufC8::NewL( iOutputBufferSize );
sl@0
   476
        err = iEmptyBufferQueue.Append( buf );
sl@0
   477
        if ( err )
sl@0
   478
            {
sl@0
   479
            delete ( buf );
sl@0
   480
            User::Leave( err );
sl@0
   481
            }
sl@0
   482
        }
sl@0
   483
    iMemReadyForWriting = ETrue;
sl@0
   484
    PRINT((_L("CFileWriter::AllocateBuffersL() out")));
sl@0
   485
    }
sl@0
   486
sl@0
   487
// -----------------------------------------------------------------------------
sl@0
   488
// CFileWriter::DoCancel()
sl@0
   489
// From CActive Cancels async request.
sl@0
   490
// -----------------------------------------------------------------------------
sl@0
   491
//
sl@0
   492
void CFileWriter::DoCancel()
sl@0
   493
    {
sl@0
   494
    }
sl@0
   495
sl@0
   496
// -----------------------------------------------------------------------------
sl@0
   497
// CFileWriter::RunL()
sl@0
   498
// From CActive Called when async request completes.
sl@0
   499
// -----------------------------------------------------------------------------
sl@0
   500
//
sl@0
   501
void CFileWriter::RunL()
sl@0
   502
    {
sl@0
   503
    PRINT(_L("CFileWriter::RunL() in"));
sl@0
   504
	PRINT((_L("e_cfilewriter_runl 1")));    
sl@0
   505
    iAsyncWritingOngoing = EFalse;
sl@0
   506
sl@0
   507
    if ( iStatus == KErrNone )
sl@0
   508
        {
sl@0
   509
        UpdateOutputFileSize();                    
sl@0
   510
        iFullBufferQueue[0]->Des().Zero();
sl@0
   511
        iError = iEmptyBufferQueue.Append( iFullBufferQueue[0] );
sl@0
   512
        if ( iError )
sl@0
   513
            {
sl@0
   514
            PRINT((_L("CFileWriter::RunL() Append failed 1 %d"), iError ));
sl@0
   515
            delete ( iFullBufferQueue[0] );
sl@0
   516
            iFullBufferQueue.Remove( 0 );
sl@0
   517
            return;
sl@0
   518
            }
sl@0
   519
        iFullBufferQueue.Remove( 0 );
sl@0
   520
        }
sl@0
   521
    else
sl@0
   522
        {
sl@0
   523
        PRINT((_L("CFileWriter::RunL() Write error in previous async: %d "), iStatus.Int() ));
sl@0
   524
        iError = iStatus.Int();
sl@0
   525
        return;
sl@0
   526
        }
sl@0
   527
sl@0
   528
    PRINT((_L("CFileWriter::RunL() Buffer written, Status: Full:%d Empty:%d Filesize:%Ld"), iFullBufferQueue.Count(), iEmptyBufferQueue.Count(), iOutputFileSize ));
sl@0
   529
    
sl@0
   530
    if ( iFlush )
sl@0
   531
        {
sl@0
   532
        PRINT(_L("CFileWriter::RunL() out, flushing"));
sl@0
   533
        PRINT((_L("e_cfilewriter_runl 0")));  
sl@0
   534
        return;
sl@0
   535
        }
sl@0
   536
sl@0
   537
    if ( iFullBufferQueue.Count() >= iMaxOutputBufHardLimit )
sl@0
   538
        {
sl@0
   539
        while ( iFullBufferQueue.Count() > iMaxOutputBufSoftLimit )
sl@0
   540
            {
sl@0
   541
            PRINT((_L("e_cfilewriter_runl_write 1")));                     
sl@0
   542
            iError = iOutputFile->Write( *iFullBufferQueue[0]);
sl@0
   543
            PRINT((_L("e_cfilewriter_runl_write 0")));                     
sl@0
   544
            if ( iError == KErrNone )
sl@0
   545
                {
sl@0
   546
                UpdateOutputFileSize();
sl@0
   547
                iFullBufferQueue[0]->Des().Zero();
sl@0
   548
                iError = iEmptyBufferQueue.Append( iFullBufferQueue[0] );
sl@0
   549
                if ( iError )
sl@0
   550
                    {
sl@0
   551
                    PRINT((_L("CFileWriter::RunL() Append failed 2 %d"), iError));
sl@0
   552
                    delete ( iFullBufferQueue[0] );
sl@0
   553
                    iFullBufferQueue.Remove( 0 );
sl@0
   554
                    return;
sl@0
   555
                    }
sl@0
   556
                iFullBufferQueue.Remove( 0 );
sl@0
   557
    			PRINT((_L("CFileWriter::RunL() Hardlimit : Buffer sync written, Status: Full:%d Empty:%d Filesize:%Ld"), iFullBufferQueue.Count(), iEmptyBufferQueue.Count(), iOutputFileSize ));
sl@0
   558
                }   
sl@0
   559
            else
sl@0
   560
                {
sl@0
   561
                PRINT((_L("CFileWriter::RunL() Write error: %d "), iError));
sl@0
   562
                return;
sl@0
   563
                }   
sl@0
   564
            }
sl@0
   565
        }
sl@0
   566
sl@0
   567
    if ( iFullBufferQueue.Count() >= iMaxOutputBufSoftLimit )
sl@0
   568
        {
sl@0
   569
        PRINT((_L("e_cfilewriter_runl_outfile_write 1")));                     
sl@0
   570
        iError = iOutputFile->Write( *iFullBufferQueue[0]);
sl@0
   571
        PRINT((_L("e_cfilewriter_runl_outfile_write 0")));                     
sl@0
   572
        if ( iError == KErrNone )
sl@0
   573
            {
sl@0
   574
            UpdateOutputFileSize();
sl@0
   575
            iFullBufferQueue[0]->Des().Zero();
sl@0
   576
            iError = iEmptyBufferQueue.Append( iFullBufferQueue[0] );
sl@0
   577
            if ( iError )
sl@0
   578
                {
sl@0
   579
                PRINT((_L("CFileWriter::RunL() Append failed 3 %d"), iError));
sl@0
   580
                delete ( iFullBufferQueue[0] );
sl@0
   581
                iFullBufferQueue.Remove( 0 );
sl@0
   582
                return;
sl@0
   583
                }
sl@0
   584
            iFullBufferQueue.Remove( 0 );
sl@0
   585
    		PRINT((_L("CFileWriter::RunL() Softlimit : Buffer sync written, Status: Full:%d Empty:%d Filesize:%Ld"), iFullBufferQueue.Count(), iEmptyBufferQueue.Count(), iOutputFileSize ));
sl@0
   586
            }   
sl@0
   587
        else
sl@0
   588
            {
sl@0
   589
            PRINT((_L("CFileWriter::RunL() Write error: %d "), iError));
sl@0
   590
            return;
sl@0
   591
            }
sl@0
   592
        }
sl@0
   593
sl@0
   594
    if ( iFullBufferQueue.Count() )
sl@0
   595
        {
sl@0
   596
        PRINT((_L("e_cfilewriter_runl_outfile2_write 1")));                     
sl@0
   597
        iOutputFile->Write( *iFullBufferQueue[0], iStatus );
sl@0
   598
        PRINT((_L("e_cfilewriter_runl_outfile2_write 0")));                     
sl@0
   599
        iAsyncWritingOngoing = ETrue;
sl@0
   600
        if ( !IsActive() )
sl@0
   601
            {
sl@0
   602
            SetActive();
sl@0
   603
            }
sl@0
   604
        }
sl@0
   605
sl@0
   606
	PRINT((_L("e_cfilewriter_runl 0")));  
sl@0
   607
    PRINT((_L("CFileWriter::RunL() out, iError=%d"), iError));
sl@0
   608
    }
sl@0
   609
sl@0
   610
//  End of File