sl@0: // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // SettingsManage.cpp
sl@0: // Part of the MVS Application for TechView
sl@0: //
sl@0: 
sl@0: #include "SettingsManager.h"
sl@0: #include "MVSAppUI.h"
sl@0: #include "MVSConfigAudioFormatDialog.h"
sl@0: #include "MVSConfigVideoFormatDialog.h"
sl@0: 
sl@0: _LIT(KFullPathOfFileStore,"C:\\private\\102737E8\\MvsSettings.dat");	
sl@0: 
sl@0: CSettingsManager::CSettingsManager()
sl@0: :iStore(0),iHasSettings(1)
sl@0: 	{	
sl@0: 	
sl@0: 	}
sl@0: 
sl@0: CSettingsManager::~CSettingsManager()
sl@0: 	{
sl@0: 	iFsSession.Close();  //close the file session
sl@0: 	iArrUid.Close();
sl@0: 	iArrStreamId.Close();
sl@0: 	if(iStore)
sl@0: 		{
sl@0: 		
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CSettingsManager::ConstructL()
sl@0: 	{
sl@0: 	User::LeaveIfError(iFsSession.Connect()); // start a file session
sl@0: 	}
sl@0: 	
sl@0: CSettingsManager* CSettingsManager::NewL()
sl@0: 	{
sl@0: 	CSettingsManager* self = new(ELeave) CSettingsManager();
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: TBool CSettingsManager::OpenStore2ReadLC()
sl@0: 	{
sl@0: 	TParse	fileStoreName;
sl@0: 	iFsSession.Parse(KFullPathOfFileStore,fileStoreName);
sl@0: 	
sl@0: 	iStore = CPermanentFileStore::OpenLC(iFsSession,
sl@0: 										fileStoreName.FullName(),
sl@0: 										EFileRead );
sl@0: 	iHasSettings = ETrue;
sl@0: 	return iHasSettings;
sl@0: 	}
sl@0: 
sl@0: void CSettingsManager::OpenStore2WriteLC()
sl@0: 	{
sl@0: 	TPath privatePath(KFullPathOfFileStore);
sl@0: 	iFsSession.PrivatePath(privatePath);
sl@0: 	TParse	fileStoreName;
sl@0: 	iFsSession.MkDirAll(KFullPathOfFileStore);
sl@0: 	iFsSession.Parse(KFullPathOfFileStore,fileStoreName);
sl@0: 	
sl@0: 	if(iHasSettings)
sl@0: 		{
sl@0: 		iStore = CPermanentFileStore::OpenLC(iFsSession,
sl@0: 											fileStoreName.FullName(),
sl@0: 											EFileWrite );
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		iStore = CPermanentFileStore::CreateLC(iFsSession,
sl@0: 											fileStoreName.FullName(),
sl@0: 											EFileWrite );
sl@0: 		}
sl@0: 	
sl@0: 	iStore->SetTypeL(KPermanentFileStoreLayoutUid);	 	
sl@0: 	}
sl@0: 
sl@0: 
sl@0: TBool CSettingsManager::HasSettings()
sl@0: 	{
sl@0: 	return iHasSettings;
sl@0: 	}
sl@0: 
sl@0: void CSettingsManager::ReadGeneralSettingsL(CMVSAppUi* aAppUI)
sl@0: 	{
sl@0: 	if(!FileExists())
sl@0: 		return;
sl@0: 	OpenStore2ReadLC();
sl@0: 	RStoreReadStream instream;
sl@0: 	iRootId = iStore->Root();
sl@0: 	instream.OpenLC(*iStore,iRootId); //open root stream for reading
sl@0: 	instream >> iGenSettingsId;
sl@0: 	CleanupStack::PopAndDestroy();			
sl@0: 	
sl@0: 	//check for the validity of the streamid
sl@0: 	if(!iGenSettingsId.Value())
sl@0: 		{
sl@0: 		CleanupStack::PopAndDestroy();
sl@0: 		return;
sl@0: 		}
sl@0: 	
sl@0: 	//open the stream for general settings
sl@0: 	instream.OpenLC(*iStore,iGenSettingsId); 
sl@0: 	aAppUI->InternalizeL(instream);
sl@0: 	CleanupStack::PopAndDestroy(2);	
sl@0: 	}
sl@0: 
sl@0: 
sl@0: void CSettingsManager::WriteGeneralSettingsL(CMVSAppUi* aAppUI)
sl@0: 	{	
sl@0: 	OpenStore2WriteLC();
sl@0: 	
sl@0: 	RStoreWriteStream outstream;
sl@0: 	/*
sl@0: 	if already there is stream id for general settings open the existing
sl@0: 	stream; otherwise create new stream id 
sl@0: 	*/
sl@0: 	TBool updation = iGenSettingsId.Value();
sl@0: 	if(updation)
sl@0: 		{
sl@0: 		outstream.ReplaceLC(*iStore,iGenSettingsId);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		iGenSettingsId = outstream.CreateLC(*iStore);
sl@0: 		}
sl@0: 	
sl@0: 	//write the general settings
sl@0: 	aAppUI->ExternalizeL(outstream);
sl@0: 	outstream.CommitL();
sl@0: 	CleanupStack::PopAndDestroy();
sl@0: 	
sl@0: 	if(!updation)
sl@0: 		{
sl@0: 		outstream.ReplaceLC(*iStore,iStore->Root());
sl@0: 		TUid tempUid;
sl@0: 		TStreamId tempStreamId(0);
sl@0: 		WriteIndexL(outstream,tempUid,tempStreamId);
sl@0: 		CleanupStack::PopAndDestroy();	
sl@0: 		}		
sl@0: 						
sl@0: 	iStore->CommitL();// commit the changes to the store
sl@0: 	CleanupStack::PopAndDestroy(); //for iStore 
sl@0: 	iFsSession.Close(); //close the file session
sl@0: 	}	  
sl@0: 
sl@0: /*
sl@0:  *This function assumes that the index doesn't exist
sl@0:  */
sl@0: void CSettingsManager::MakeSeedIndexL()
sl@0: 	{
sl@0: 	OpenStore2WriteLC();
sl@0: 	RStoreWriteStream outstream;
sl@0: 	TStreamId invalidId(0); //caution: confirm the reliability of this value
sl@0: 	iRootId = outstream.CreateLC(*iStore);		
sl@0: 	
sl@0: 	//write an invalid  stream index for general settings i.e.iGenSettingsId
sl@0: 	outstream << invalidId;	 
sl@0: 		
sl@0: 	//write no. of controllers as 0
sl@0: 	outstream.WriteInt8L(0);
sl@0: 	
sl@0: 	outstream.CommitL(); //commit stream changes
sl@0: 	CleanupStack::PopAndDestroy();
sl@0: 	
sl@0: 	iStore->SetRootL(iRootId);
sl@0: 	iStore->CommitL(); //commit changes to store
sl@0: 	
sl@0: 	CleanupStack::PopAndDestroy(); //for iStore	
sl@0: 	}
sl@0: 
sl@0: // the stream should be in the beginning of controller section
sl@0: void CSettingsManager::ReadControllerTableL(RReadStream& aStream)
sl@0: 	{
sl@0: 	iControllerCnt = aStream.ReadInt8L();	
sl@0: 	TStreamId tempId;
sl@0: 	iArrUid.Reset();
sl@0: 	iArrStreamId.Reset();
sl@0: 	//read the available pairs of Uid - Streamd Ids.
sl@0: 	for(TInt8 i = 0; i < iControllerCnt;i++)
sl@0: 		{
sl@0: 		iArrUid.AppendL(TUid::Uid(aStream.ReadInt32L()));
sl@0: 		aStream >> tempId;
sl@0: 		iArrStreamId.AppendL(tempId);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 
sl@0: TBool CSettingsManager::IsControllerAvailableL(const TUid& aUid,
sl@0: 													  TStreamId&  aStreamId)
sl@0: 	{
sl@0: 	 // if there is no Store fiel return false
sl@0: 	if(!FileExists())
sl@0: 		return 0;
sl@0: 	OpenStore2ReadLC();
sl@0: 	RStoreReadStream instream;
sl@0: 	iRootId = iStore->Root();
sl@0: 	instream.OpenLC(*iStore,iRootId); //open root stream for reading
sl@0: 	instream >> iGenSettingsId;	 //read this to move to controller section
sl@0: 	ReadControllerTableL(instream);
sl@0: 	CleanupStack::PopAndDestroy(2);			
sl@0: 	for(TUint8 i = 0; i < iControllerCnt; i++)
sl@0: 		{
sl@0: 		if(iArrUid[i] == aUid)
sl@0: 			{
sl@0: 		  	aStreamId = iArrStreamId[i];
sl@0: 		  	return 1;	
sl@0: 			}					
sl@0: 	 	}
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: TInt CSettingsManager::ReadAudioDataL(CMVSConfigAudioFormatDialog* aAudioFormatDlg,
sl@0:  							                 const TUid& aUid)
sl@0: 	{
sl@0: 	TStreamId controllerId;
sl@0: 	// if the controller settings is not available return
sl@0: 	if(!IsControllerAvailableL(aUid,controllerId))
sl@0: 		return 0;
sl@0: 	
sl@0: 	//open the store to read
sl@0: 	if(!FileExists())
sl@0: 		return 0;
sl@0: 	OpenStore2ReadLC();
sl@0: 	//open the stream of the given controller for reading
sl@0: 	RStoreReadStream instream;
sl@0: 	instream.OpenLC(*iStore,controllerId);
sl@0: 	aAudioFormatDlg->InternalizeL(instream);
sl@0: 	CleanupStack::PopAndDestroy(2);
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: void CSettingsManager::WriteAudioDataL(CMVSConfigAudioFormatDialog* aAudioFormat,
sl@0: 					  				const TUid& aUid)
sl@0: 	{
sl@0: 	TStreamId controllerId;		
sl@0: 	RStoreWriteStream outstream;
sl@0: 	TBool existingController = IsControllerAvailableL(aUid,controllerId);
sl@0: 	OpenStore2WriteLC();	
sl@0: 	if(!existingController)
sl@0: 		{
sl@0: 		//if controller settings is not available create new stream
sl@0: 		controllerId = outstream.CreateLC(*iStore);		
sl@0: 		}
sl@0: 	else //open the existing for updation
sl@0: 		{
sl@0: 		outstream.ReplaceLC(*iStore,controllerId); 				
sl@0: 		}
sl@0: 	aAudioFormat->ExternalizeL(outstream);
sl@0: 	outstream.CommitL();
sl@0: 	CleanupStack::PopAndDestroy();
sl@0: 	
sl@0:     /*
sl@0:     if there is no updation for controller i.e. new controller settings 
sl@0:     is entered
sl@0:     */
sl@0: 	if(!existingController)
sl@0: 		{
sl@0: 		outstream.ReplaceLC(*iStore,iRootId); 					
sl@0: 		WriteIndexL(outstream,aUid,controllerId);
sl@0: 		CleanupStack::PopAndDestroy();		
sl@0: 		}
sl@0: 	iStore->CommitL();
sl@0: 	CleanupStack::PopAndDestroy(); //for iStore
sl@0: 	}	
sl@0: 
sl@0: void CSettingsManager::WriteIndexL(RWriteStream& aStream,
sl@0: 								  const TUid& aUid,
sl@0: 								  TStreamId& aStreamId)
sl@0: 	{
sl@0: 	TBool bNewPlugin = aStreamId.Value();
sl@0: 	TUint8 uchExistingPluginCnt = iControllerCnt;
sl@0: 	//write root index
sl@0: 	aStream << iGenSettingsId;
sl@0: 	
sl@0: 	if(bNewPlugin)
sl@0: 		{
sl@0: 		iControllerCnt++;		
sl@0: 		}
sl@0: 	
sl@0: 	aStream.WriteInt8L(iControllerCnt);
sl@0: 	
sl@0: 	//write the uid-streamid for existing plugins
sl@0: 	for(TUint8 i = 0; i < uchExistingPluginCnt; i++)
sl@0: 		{
sl@0: 		aStream.WriteInt32L(iArrUid[i].iUid); //write uid
sl@0: 		aStream << 	iArrStreamId[i];	 //write streamid
sl@0: 		}
sl@0: 	
sl@0: 	if(!bNewPlugin)
sl@0: 		{
sl@0: 		aStream.CommitL();
sl@0: 		return;	
sl@0: 		}
sl@0: 	
sl@0: 	//write uid-streamId for new plugin
sl@0: 	aStream.WriteInt32L(aUid.iUid); //write uid
sl@0: 	aStream << aStreamId;			//write streamid
sl@0: 		
sl@0: 	iArrUid.AppendL(aUid);
sl@0: 	iArrStreamId.AppendL(aStreamId);	
sl@0: 	aStream.CommitL();		
sl@0: 	}
sl@0: 
sl@0: 
sl@0: TBool CSettingsManager::ReadVideoDataL(CMVSConfigVideoFormatDialog* aVideoFormatDlg,
sl@0:  							          const TUid& aUid)
sl@0: 	{
sl@0: 	TStreamId controllerId;
sl@0: 	// if the controller settings is not available return
sl@0: 	if(!IsControllerAvailableL(aUid,controllerId))
sl@0: 		return 0;
sl@0: 	
sl@0: 	//open the store to read
sl@0: 	if(!FileExists())
sl@0: 		return 0;
sl@0: 	OpenStore2ReadLC();
sl@0: 	//open the stream of the given controller for reading
sl@0: 	RStoreReadStream instream;
sl@0: 	instream.OpenLC(*iStore,controllerId);
sl@0: 	aVideoFormatDlg->InternalizeL(instream);
sl@0: 	CleanupStack::PopAndDestroy(2); 
sl@0: 	return 1;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: void  CSettingsManager::WriteVideoDataL( CMVSConfigVideoFormatDialog* aVideoFormatDlg,
sl@0: 						 				const TUid& aUid)
sl@0: 	{
sl@0: 	TStreamId controllerId;		
sl@0: 	RStoreWriteStream outstream;
sl@0: 	TBool existingController = IsControllerAvailableL(aUid,controllerId);
sl@0: 	OpenStore2WriteLC();	
sl@0: 	if(!existingController)
sl@0: 		{
sl@0: 		//if controller settings is not available create new stream
sl@0: 		controllerId = outstream.CreateLC(*iStore);		
sl@0: 		}
sl@0: 	else //open the existing for updation
sl@0: 		{
sl@0: 		outstream.ReplaceLC(*iStore,controllerId); 				
sl@0: 		}
sl@0: 	aVideoFormatDlg->ExternalizeL(outstream);
sl@0: 	outstream.CommitL();
sl@0: 	CleanupStack::PopAndDestroy();
sl@0: 	
sl@0:     /*
sl@0:     if there is no updation for controller i.e. new controller settings 
sl@0:     is entered
sl@0:     */
sl@0: 	if(!existingController)
sl@0: 		{
sl@0: 		outstream.ReplaceLC(*iStore,iRootId); 					
sl@0: 		WriteIndexL(outstream,aUid,controllerId);
sl@0: 		CleanupStack::PopAndDestroy();		
sl@0: 		}
sl@0: 	iStore->CommitL();
sl@0: 	CleanupStack::PopAndDestroy(); //for iStore	
sl@0: 	}
sl@0: 
sl@0: TBool CSettingsManager::FileExists()
sl@0: 	{
sl@0: 	TParse fileStoreName;
sl@0: 	iFsSession.Parse(KFullPathOfFileStore,fileStoreName);
sl@0: 	//check whether a settings file already exists
sl@0: 	RFile file;
sl@0: 	if(file.Open(iFsSession,fileStoreName.FullName(),EFileRead)!= KErrNone) // if the file doesn't exist already
sl@0: 		{
sl@0: 		iHasSettings = 0;
sl@0: 		return EFalse;
sl@0: 		}
sl@0: 	file.Close();
sl@0: 	return ETrue;
sl@0: 	}