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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 "metadatafilewriter.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)
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#else
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#define PRINT(x)
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#endif
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const TInt KMetaDataWriterBufferSize = (4*4096);
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const TInt KMetaDataWriterInputBufCount = 10;
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const TInt KMetaDataWriterOutputBufCount = 4;
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// ============================ MEMBER FUNCTIONS ===============================
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CMetaDataWriterBuffer::~CMetaDataWriterBuffer()
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{
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delete iData;
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}
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// -----------------------------------------------------------------------------
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// CMetaDataFileWriter::CMetaDataFileWriter
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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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CMetaDataFileWriter::CMetaDataFileWriter() : CActive( EPriorityHigh )
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{
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}
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// -----------------------------------------------------------------------------
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// CMetaDataFileWriter::ConstructL
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CMetaDataFileWriter::ConstructL( )
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{
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PRINT(_L("CMetaDataFileWriter::ConstructL() in"));
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iError = KErrNone;
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iAsyncWritingOngoing = EFalse;
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iFlush = EFalse;
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iFlushDone = EFalse;
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for (TInt i=0; i<KMetaDataWriterInputBufCount; i++)
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{
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iOutputFile.AppendL(NULL);
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CMetaDataWriterBuffer* emptyInputBuffer = new (ELeave) CMetaDataWriterBuffer;
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CleanupStack::PushL(emptyInputBuffer);
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emptyInputBuffer->iData = HBufC8::NewL(KMetaDataWriterBufferSize);
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emptyInputBuffer->iOutputFileNum = i;
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iInputBufferArray.AppendL(emptyInputBuffer);
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CleanupStack::Pop(emptyInputBuffer);
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iInputBufferArrayDelivered[i] = 0;
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}
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for (TInt j=0; j<KMetaDataWriterOutputBufCount; j++)
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{
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CMetaDataWriterBuffer* emptyOutputBuffer = new (ELeave) CMetaDataWriterBuffer;
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CleanupStack::PushL(emptyOutputBuffer);
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emptyOutputBuffer->iData = HBufC8::NewL(KMetaDataWriterBufferSize);
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emptyOutputBuffer->iOutputFileNum = -1;
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iEmptyBufferQueue.AppendL(emptyOutputBuffer);
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CleanupStack::Pop(emptyOutputBuffer);
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}
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CActiveScheduler::Add(this);
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PRINT(_L("CMetaDataFileWriter::ConstructL() out"));
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}
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// -----------------------------------------------------------------------------
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// CMetaDataFileWriter::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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CMetaDataFileWriter* CMetaDataFileWriter::NewL()
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{
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PRINT(_L("CMetaDataFileWriter::NewL() in"));
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CMetaDataFileWriter* self = new(ELeave) CMetaDataFileWriter;
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CleanupStack::PushL(self);
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self->ConstructL( );
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CleanupStack::Pop(self);
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PRINT(_L("CMetaDataFileWriter::NewL() out"));
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return self;
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}
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// Destructor
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CMetaDataFileWriter::~CMetaDataFileWriter()
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{
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PRINT(_L("CMetaDataFileWriter::~CMetaDataFileWriter() 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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iOutputFile.Reset();
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iInputBufferArray.ResetAndDestroy();
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iOutputBufferQueue.ResetAndDestroy();
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iEmptyBufferQueue.ResetAndDestroy();
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PRINT(_L("CMetaDataFileWriter::~CMetaDataFileWriter() out"));
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}
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// -----------------------------------------------------------------------------
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// CMetaDataFileWriter::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 CMetaDataFileWriter:: Write( RFile64& aFile, const TInt aFileNumber, const TDesC8& aBuf )
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{
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PRINT(_L("CMetaDataFileWriter::Write() in"));
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PRINT((_L("e_cmetadatawriter_write 1")));
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iOutputFile[aFileNumber] = &aFile;
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PRINT((_L("e_cmetadatawriter_write_adddatatobuffer 1")));
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TInt error = AddDataToBuffer( aFileNumber, aBuf );
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if ( error != KErrNone )
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{
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PRINT((_L("CMetaDataFileWriter::Write() buffer write error: %d"), error));
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return error;
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}
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PRINT((_L("e_cmetadatawriter_write_adddatatobuffer 0")));
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PRINT((_L("CMetaDataFileWriter::Write() Write Buffer, Status: Full:%d Empty:%d "),
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iOutputBufferQueue.Count(), iEmptyBufferQueue.Count() ));
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if ( iAsyncWritingOngoing )
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{
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if ( iOutputBufferQueue.Count() >= KFileWriterHardBufLimit )
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{
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PRINT((_L("CMetaDataFileWriter::Write() Waiting async write to complete")));
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PRINT((_L("e_cmetadatawriter_write_waitasync 1")));
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User::WaitForRequest( iStatus );
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PRINT((_L("e_cmetadatawriter_write_waitasync 0")));
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PRINT((_L("CMetaDataFileWriter::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("CMetaDataFileWriter::Write() 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 ( iOutputBufferQueue.Count() )
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{
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PRINT(_L("CMetaDataFileWriter::Write() writing async"));
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PRINT((_L("e_cmetadatawriter_write_startwrite 1")));
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iOutputFile[iOutputBufferQueue[0]->iOutputFileNum]->Write( *(iOutputBufferQueue[0]->iData), iStatus );
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PRINT((_L("e_cmetadatawriter_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("CMetaDataFileWriter::Write() out"));
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PRINT((_L("e_cmetadatawriter_write 0")));
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return error;
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}
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// -----------------------------------------------------------------------------
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// CMetaDataFileWriter::Flush( )
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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 CMetaDataFileWriter::Flush( )
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{
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PRINT(_L("CMetaDataFileWriter::Flush() in"));
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PRINT((_L("e_cmetadatawriter_flush 1")));
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PRINT((_L("CMetaDataFileWriter::Flush() FullCount: %d "), iOutputBufferQueue.Count()));
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TInt error = KErrNone;
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iFlush = ETrue;
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if ( iAsyncWritingOngoing )
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{
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PRINT((_L("CMetaDataFileWriter::Flush() Waiting async write to complete")));
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PRINT((_L("e_cmetadatawriter_flush_waitasyncstop 1")));
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User::WaitForRequest( iStatus );
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PRINT((_L("e_cmetadatawriter_flush_waitasyncstop 0")));
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PRINT((_L("CMetaDataFileWriter::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("CMetaDataFileWriter::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 ( iOutputBufferQueue.Count() )
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{
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PRINT((_L("e_cmetadatawriter_flush_writesync 1")));
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error = iOutputFile[iOutputBufferQueue[0]->iOutputFileNum]->Write( *(iOutputBufferQueue[0]->iData) );
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if ( error == KErrNone )
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{
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error = iEmptyBufferQueue.Append(iOutputBufferQueue[0]);
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if (error == KErrNone)
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{
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iOutputBufferQueue[0]->iData->Des().Zero();
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iOutputBufferQueue[0]->iOutputFileNum = -1;
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iOutputBufferQueue.Remove(0);
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}
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else
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{
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PRINT((_L("CMetaDataFileWriter::Flush() iEmptyBufferQueue.Append failed, error: %d"), error));
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return error;
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}
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}
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else
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{
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PRINT((_L("CMetaDataFileWriter::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_cmetadatawriter_flush_writesync 0")));
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}
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if ( !iFlushDone ) // Flush only once
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{
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iFlushDone = ETrue;
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for ( TInt i=0; i < KMetaDataWriterInputBufCount; i++ )
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{
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if ( iOutputFile[i] )
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{
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PRINT((_L("e_cmetadatawriter_flush_write_tempfiles 1")));
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error = iOutputFile[i]->Flush();
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PRINT((_L("e_cmetadatawriter_flush_write_tempfiles 0")));
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PRINT((_L("CMetaDataFileWriter::Flush() inputbuf[%d] flush return code: %d"), i, error));
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}
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}
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}
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iFlush = EFalse;
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PRINT((_L("CMetaDataFileWriter::Flush() FullCount: %d <= Should be 0"), iOutputBufferQueue.Count()));
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PRINT(_L("CMetaDataFileWriter::Flush() out"));
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PRINT((_L("e_cmetadatawriter_flush 0")));
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return KErrNone;
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}
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// -----------------------------------------------------------------------------
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// CMetaDataFileWriter::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 CMetaDataFileWriter::AddDataToBuffer(const TInt aFileNumber, const TDesC8& aBuf )
|
|
sl@0
|
299 |
{
|
|
sl@0
|
300 |
PRINT(_L("CMetaDataFileWriter::AddDataToBuffer() in"));
|
|
sl@0
|
301 |
|
|
sl@0
|
302 |
TInt byteswritten = 0;
|
|
sl@0
|
303 |
TInt numbytes = 0;
|
|
sl@0
|
304 |
TInt available = 0; // Available bytes in write buffer
|
|
sl@0
|
305 |
TInt error = KErrNone;
|
|
sl@0
|
306 |
|
|
sl@0
|
307 |
HBufC8* inputBuf = iInputBufferArray[aFileNumber]->iData;
|
|
sl@0
|
308 |
|
|
sl@0
|
309 |
if ( iError != KErrNone )
|
|
sl@0
|
310 |
{
|
|
sl@0
|
311 |
PRINT((_L("CMetaDataFileWriter::AddDataToBuffer() out, RunL iError: %d"), iError));
|
|
sl@0
|
312 |
return iError;
|
|
sl@0
|
313 |
}
|
|
sl@0
|
314 |
|
|
sl@0
|
315 |
PRINT((_L("CMetaDataFileWriter::AddDataToBuffer() Save Buffer, Size: %d "), aBuf.Length() ));
|
|
sl@0
|
316 |
|
|
sl@0
|
317 |
while (byteswritten < aBuf.Length() )
|
|
sl@0
|
318 |
{
|
|
sl@0
|
319 |
available = (inputBuf->Des()).MaxLength() - inputBuf->Length();
|
|
sl@0
|
320 |
|
|
sl@0
|
321 |
if (available > 0)
|
|
sl@0
|
322 |
{
|
|
sl@0
|
323 |
numbytes = aBuf.Length() - byteswritten;
|
|
sl@0
|
324 |
if (numbytes > available)
|
|
sl@0
|
325 |
{
|
|
sl@0
|
326 |
numbytes = available;
|
|
sl@0
|
327 |
}
|
|
sl@0
|
328 |
inputBuf->Des().Append( aBuf.Mid( byteswritten, numbytes ) );
|
|
sl@0
|
329 |
byteswritten += numbytes;
|
|
sl@0
|
330 |
}
|
|
sl@0
|
331 |
else // Buffer is full, move it to outputqueue and use empty/new buf as input.
|
|
sl@0
|
332 |
{
|
|
sl@0
|
333 |
if ( iEmptyBufferQueue.Count() == 0 )
|
|
sl@0
|
334 |
{
|
|
sl@0
|
335 |
CMetaDataWriterBuffer* emptyInputBuffer = 0;
|
|
sl@0
|
336 |
|
|
sl@0
|
337 |
emptyInputBuffer = new CMetaDataWriterBuffer;
|
|
sl@0
|
338 |
if ( !emptyInputBuffer )
|
|
sl@0
|
339 |
{
|
|
sl@0
|
340 |
PRINT((_L("CMetaDataFileWriter::AddDataToBuffer(), memory alloc failed")));
|
|
sl@0
|
341 |
iError = KErrNoMemory;
|
|
sl@0
|
342 |
break;
|
|
sl@0
|
343 |
}
|
|
sl@0
|
344 |
|
|
sl@0
|
345 |
TRAP(error, emptyInputBuffer->iData = HBufC8::NewL( KMetaDataWriterBufferSize ));
|
|
sl@0
|
346 |
if ( error != KErrNone )
|
|
sl@0
|
347 |
{
|
|
sl@0
|
348 |
PRINT((_L("CMetaDataFileWriter::AddDataToBuffer(), memory alloc failed: %d"), error));
|
|
sl@0
|
349 |
delete emptyInputBuffer;
|
|
sl@0
|
350 |
emptyInputBuffer = NULL;
|
|
sl@0
|
351 |
iError = error;
|
|
sl@0
|
352 |
break;
|
|
sl@0
|
353 |
}
|
|
sl@0
|
354 |
else
|
|
sl@0
|
355 |
{
|
|
sl@0
|
356 |
error = iOutputBufferQueue.Append(iInputBufferArray[aFileNumber]);
|
|
sl@0
|
357 |
if (error != KErrNone)
|
|
sl@0
|
358 |
{
|
|
sl@0
|
359 |
PRINT((_L("CMetaDataFileWriter::AddDataToBuffer(), memory alloc failed: %d"), error));
|
|
sl@0
|
360 |
delete emptyInputBuffer;
|
|
sl@0
|
361 |
emptyInputBuffer = NULL;
|
|
sl@0
|
362 |
iError = error;
|
|
sl@0
|
363 |
break;
|
|
sl@0
|
364 |
}
|
|
sl@0
|
365 |
|
|
sl@0
|
366 |
// old full buffer to output queue.
|
|
sl@0
|
367 |
emptyInputBuffer->iOutputFileNum = aFileNumber;
|
|
sl@0
|
368 |
|
|
sl@0
|
369 |
// new buffer to input.
|
|
sl@0
|
370 |
iInputBufferArray[aFileNumber] = emptyInputBuffer;
|
|
sl@0
|
371 |
}
|
|
sl@0
|
372 |
}
|
|
sl@0
|
373 |
else
|
|
sl@0
|
374 |
{
|
|
sl@0
|
375 |
// old full buffer to output queue.
|
|
sl@0
|
376 |
TInt err = iOutputBufferQueue.Append( iInputBufferArray[aFileNumber] );
|
|
sl@0
|
377 |
if (err != KErrNone)
|
|
sl@0
|
378 |
{
|
|
sl@0
|
379 |
PRINT((_L("CMetaDataFileWriter::AddDataToBuffer(), iOutputBufferQueue.Append failed: %d"), err));
|
|
sl@0
|
380 |
iError = err;
|
|
sl@0
|
381 |
break;
|
|
sl@0
|
382 |
}
|
|
sl@0
|
383 |
|
|
sl@0
|
384 |
// empty buffer from empty queue to input.
|
|
sl@0
|
385 |
iInputBufferArray[aFileNumber] = iEmptyBufferQueue[0];
|
|
sl@0
|
386 |
iInputBufferArray[aFileNumber]->iData->Des().Zero();
|
|
sl@0
|
387 |
iInputBufferArray[aFileNumber]->iOutputFileNum = aFileNumber;
|
|
sl@0
|
388 |
iEmptyBufferQueue.Remove(0);
|
|
sl@0
|
389 |
}
|
|
sl@0
|
390 |
|
|
sl@0
|
391 |
inputBuf = iInputBufferArray[aFileNumber]->iData;
|
|
sl@0
|
392 |
}
|
|
sl@0
|
393 |
}
|
|
sl@0
|
394 |
|
|
sl@0
|
395 |
PRINT((_L("CMetaDataFileWriter::AddDataToBuffer() out, error: %d"), error));
|
|
sl@0
|
396 |
return error;
|
|
sl@0
|
397 |
}
|
|
sl@0
|
398 |
|
|
sl@0
|
399 |
// -----------------------------------------------------------------------------
|
|
sl@0
|
400 |
// CMetaDataFileWriter::DoCancel()
|
|
sl@0
|
401 |
// From CActive Cancels async request.
|
|
sl@0
|
402 |
// -----------------------------------------------------------------------------
|
|
sl@0
|
403 |
//
|
|
sl@0
|
404 |
void CMetaDataFileWriter::DoCancel()
|
|
sl@0
|
405 |
{
|
|
sl@0
|
406 |
}
|
|
sl@0
|
407 |
|
|
sl@0
|
408 |
// -----------------------------------------------------------------------------
|
|
sl@0
|
409 |
// CMetaDataFileWriter::RunL()
|
|
sl@0
|
410 |
// From CActive Called when async request completes.
|
|
sl@0
|
411 |
// -----------------------------------------------------------------------------
|
|
sl@0
|
412 |
//
|
|
sl@0
|
413 |
void CMetaDataFileWriter::RunL()
|
|
sl@0
|
414 |
{
|
|
sl@0
|
415 |
PRINT(_L("CMetaDataFileWriter::RunL() in"));
|
|
sl@0
|
416 |
PRINT((_L("e_cmetadatawriter_runl 1")));
|
|
sl@0
|
417 |
iAsyncWritingOngoing = EFalse;
|
|
sl@0
|
418 |
|
|
sl@0
|
419 |
if ( iStatus == KErrNone )
|
|
sl@0
|
420 |
{
|
|
sl@0
|
421 |
iEmptyBufferQueue.AppendL( iOutputBufferQueue[0] );
|
|
sl@0
|
422 |
iOutputBufferQueue[0]->iData->Des().Zero();
|
|
sl@0
|
423 |
iOutputBufferQueue[0]->iOutputFileNum = -1;
|
|
sl@0
|
424 |
iOutputBufferQueue.Remove( 0 );
|
|
sl@0
|
425 |
}
|
|
sl@0
|
426 |
else
|
|
sl@0
|
427 |
{
|
|
sl@0
|
428 |
PRINT((_L("CMetaDataFileWriter::RunL() Write error in previous async: %d "), iStatus.Int() ));
|
|
sl@0
|
429 |
iError = iStatus.Int();
|
|
sl@0
|
430 |
return;
|
|
sl@0
|
431 |
}
|
|
sl@0
|
432 |
|
|
sl@0
|
433 |
PRINT((_L("CMetaDataFileWriter::RunL() Buffer written, Status: Full:%d Empty:%d "), iOutputBufferQueue.Count(), iEmptyBufferQueue.Count() ));
|
|
sl@0
|
434 |
|
|
sl@0
|
435 |
if ( iFlush )
|
|
sl@0
|
436 |
{
|
|
sl@0
|
437 |
PRINT(_L("CMetaDataFileWriter::RunL() out, flushing"));
|
|
sl@0
|
438 |
PRINT((_L("e_cmetadatawriter_runl 0")));
|
|
sl@0
|
439 |
return;
|
|
sl@0
|
440 |
}
|
|
sl@0
|
441 |
|
|
sl@0
|
442 |
if ( iOutputBufferQueue.Count() >= KFileWriterHardBufLimit )
|
|
sl@0
|
443 |
{
|
|
sl@0
|
444 |
while ( iOutputBufferQueue.Count() > KFileWriterSoftBufLimit )
|
|
sl@0
|
445 |
{
|
|
sl@0
|
446 |
PRINT((_L("e_cmetadatawriter_runl1_write 1")));
|
|
sl@0
|
447 |
iError = iOutputFile[iOutputBufferQueue[0]->iOutputFileNum]->Write( *(iOutputBufferQueue[0]->iData));
|
|
sl@0
|
448 |
PRINT((_L("e_cmetadatawriter_runl1_write 0")));
|
|
sl@0
|
449 |
if ( iError == KErrNone )
|
|
sl@0
|
450 |
{
|
|
sl@0
|
451 |
iEmptyBufferQueue.AppendL( iOutputBufferQueue[0] );
|
|
sl@0
|
452 |
iOutputBufferQueue[0]->iData->Des().Zero();
|
|
sl@0
|
453 |
iOutputBufferQueue[0]->iOutputFileNum = -1;
|
|
sl@0
|
454 |
iOutputBufferQueue.Remove( 0 );
|
|
sl@0
|
455 |
}
|
|
sl@0
|
456 |
else
|
|
sl@0
|
457 |
{
|
|
sl@0
|
458 |
PRINT((_L("CMetaDataFileWriter::RunL() Write error: %d "), iError));
|
|
sl@0
|
459 |
return;
|
|
sl@0
|
460 |
}
|
|
sl@0
|
461 |
}
|
|
sl@0
|
462 |
}
|
|
sl@0
|
463 |
|
|
sl@0
|
464 |
if ( iOutputBufferQueue.Count() >= KFileWriterSoftBufLimit )
|
|
sl@0
|
465 |
{
|
|
sl@0
|
466 |
PRINT((_L("e_cmetadatawriter_runl2_write 1")));
|
|
sl@0
|
467 |
iError = iOutputFile[iOutputBufferQueue[0]->iOutputFileNum]->Write( *(iOutputBufferQueue[0]->iData));
|
|
sl@0
|
468 |
PRINT((_L("e_cmetadatawriter_runl2_write 0")));
|
|
sl@0
|
469 |
if ( iError == KErrNone )
|
|
sl@0
|
470 |
{
|
|
sl@0
|
471 |
iEmptyBufferQueue.AppendL( iOutputBufferQueue[0] );
|
|
sl@0
|
472 |
iOutputBufferQueue[0]->iData->Des().Zero();
|
|
sl@0
|
473 |
iOutputBufferQueue[0]->iOutputFileNum = -1;
|
|
sl@0
|
474 |
iOutputBufferQueue.Remove( 0 );
|
|
sl@0
|
475 |
}
|
|
sl@0
|
476 |
else
|
|
sl@0
|
477 |
{
|
|
sl@0
|
478 |
PRINT((_L("CMetaDataFileWriter::RunL() Write error: %d "), iError));
|
|
sl@0
|
479 |
return;
|
|
sl@0
|
480 |
}
|
|
sl@0
|
481 |
}
|
|
sl@0
|
482 |
|
|
sl@0
|
483 |
if ( iOutputBufferQueue.Count() )
|
|
sl@0
|
484 |
{
|
|
sl@0
|
485 |
PRINT((_L("e_cmetadatawriter_runl3_write 1")));
|
|
sl@0
|
486 |
iOutputFile[iOutputBufferQueue[0]->iOutputFileNum]->Write( *(iOutputBufferQueue[0]->iData), iStatus );
|
|
sl@0
|
487 |
PRINT((_L("e_cmetadatawriter_runl3_write 0")));
|
|
sl@0
|
488 |
iAsyncWritingOngoing = ETrue;
|
|
sl@0
|
489 |
if ( !IsActive() )
|
|
sl@0
|
490 |
{
|
|
sl@0
|
491 |
SetActive();
|
|
sl@0
|
492 |
}
|
|
sl@0
|
493 |
}
|
|
sl@0
|
494 |
|
|
sl@0
|
495 |
PRINT((_L("e_cmetadatawriter_runl 0")));
|
|
sl@0
|
496 |
PRINT(_L("CMetaDataFileWriter::RunL() out"));
|
|
sl@0
|
497 |
}
|
|
sl@0
|
498 |
|
|
sl@0
|
499 |
// -----------------------------------------------------------------------------
|
|
sl@0
|
500 |
// CMetaDataFileWriter::RunError
|
|
sl@0
|
501 |
// -----------------------------------------------------------------------------
|
|
sl@0
|
502 |
//
|
|
sl@0
|
503 |
TInt CMetaDataFileWriter::RunError(TInt aError)
|
|
sl@0
|
504 |
{
|
|
sl@0
|
505 |
//RunL can leave.
|
|
sl@0
|
506 |
iError = aError;
|
|
sl@0
|
507 |
return KErrNone ;
|
|
sl@0
|
508 |
}
|
|
sl@0
|
509 |
|
|
sl@0
|
510 |
// -----------------------------------------------------------------------------
|
|
sl@0
|
511 |
// CMetaDataFileWriter::ReadBuffer
|
|
sl@0
|
512 |
// -----------------------------------------------------------------------------
|
|
sl@0
|
513 |
//
|
|
sl@0
|
514 |
TInt CMetaDataFileWriter::ReadBuffer( const TInt aFileNumber, TDes8& aBuf, TInt bytestoread )
|
|
sl@0
|
515 |
{
|
|
sl@0
|
516 |
PRINT(_L("CMetaDataFileWriter::ReadBuffer() in"));
|
|
sl@0
|
517 |
PRINT((_L("e_cmetadatawriter_readbuffer 1")));
|
|
sl@0
|
518 |
TInt bytesread;
|
|
sl@0
|
519 |
|
|
sl@0
|
520 |
PRINT((_L("CMetaDataFileWriter::ReadBuffer() iInputBufferArray[%d]->iData->Length(): %d, requested %d"), aFileNumber, iInputBufferArray[aFileNumber]->iData->Length(), bytestoread));
|
|
sl@0
|
521 |
if ( !iInputBufferArray[aFileNumber]->iData->Length() )
|
|
sl@0
|
522 |
{
|
|
sl@0
|
523 |
bytesread = 0;
|
|
sl@0
|
524 |
}
|
|
sl@0
|
525 |
else if ( (iInputBufferArray[aFileNumber]->iData->Length() -
|
|
sl@0
|
526 |
iInputBufferArrayDelivered[aFileNumber]) >= bytestoread )
|
|
sl@0
|
527 |
{
|
|
sl@0
|
528 |
bytesread = bytestoread;
|
|
sl@0
|
529 |
aBuf.Append( iInputBufferArray[aFileNumber]->iData->Mid( iInputBufferArrayDelivered[aFileNumber], bytesread ) );
|
|
sl@0
|
530 |
iInputBufferArrayDelivered[aFileNumber] += bytesread;
|
|
sl@0
|
531 |
|
|
sl@0
|
532 |
// If the buffer is read empty, release it
|
|
sl@0
|
533 |
if ( iInputBufferArray[aFileNumber]->iData->Length() == iInputBufferArrayDelivered[aFileNumber] )
|
|
sl@0
|
534 |
{
|
|
sl@0
|
535 |
PRINT((_L("CMetaDataFileWriter::ReadBuffer() iInputBufferArray[%d] %d delivered"), aFileNumber, iInputBufferArray[aFileNumber]->iData->Length()));
|
|
sl@0
|
536 |
iInputBufferArray[aFileNumber]->iData->Des().Zero();
|
|
sl@0
|
537 |
}
|
|
sl@0
|
538 |
}
|
|
sl@0
|
539 |
else
|
|
sl@0
|
540 |
{
|
|
sl@0
|
541 |
bytesread = iInputBufferArray[aFileNumber]->iData->Length() - iInputBufferArrayDelivered[aFileNumber];
|
|
sl@0
|
542 |
aBuf.Append( iInputBufferArray[aFileNumber]->iData->Mid( iInputBufferArrayDelivered[aFileNumber], bytesread ) );
|
|
sl@0
|
543 |
iInputBufferArrayDelivered[aFileNumber] += bytesread;
|
|
sl@0
|
544 |
|
|
sl@0
|
545 |
PRINT((_L("CMetaDataFileWriter::ReadBuffer() iInputBufferArray[%d] %d bytes delivered"), aFileNumber, iInputBufferArray[aFileNumber]->iData->Length()));
|
|
sl@0
|
546 |
iInputBufferArray[aFileNumber]->iData->Des().Zero();
|
|
sl@0
|
547 |
}
|
|
sl@0
|
548 |
|
|
sl@0
|
549 |
PRINT((_L("e_cmetadatawriter_readbuffer 0")));
|
|
sl@0
|
550 |
PRINT(_L("CMetaDataFileWriter::ReadBuffer() out"));
|
|
sl@0
|
551 |
|
|
sl@0
|
552 |
return ( bytesread );
|
|
sl@0
|
553 |
}
|
|
sl@0
|
554 |
|
|
sl@0
|
555 |
// End of File
|