sl@0: /*
sl@0: * Copyright (c) 2004-2009 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: *
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifndef AUDIOSTREAMMANAGER_H
sl@0: #define AUDIOSTREAMMANAGER_H
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <ecom/ecom.h>
sl@0: #include <a3f/a3f_trace_utils.h>
sl@0: #include <a3f/a3fbase.h>
sl@0: #include <a3f/maudiostream.h>
sl@0: 
sl@0: /**
sl@0: 	A generic AudioComponent base class implementation.
sl@0: 	@see MAudioProcessingUnit
sl@0: */
sl@0: NONSHARABLE_CLASS(CAudioStreamManager) :	public CBase,
sl@0: 											public MAudioStream
sl@0: 	{
sl@0: public:
sl@0: 	static CAudioStreamManager* NewL(TUid aImplementationUid);
sl@0: 	/**
sl@0: 		Destructor.
sl@0: 		Releases all resources and deletes all objects owned by this instance.
sl@0: 	*/
sl@0: 	virtual ~CAudioStreamManager();
sl@0: 
sl@0: 	//From MAudioStream
sl@0: 	virtual TInt RegisterAudioStreamObserver(MAudioStreamObserver& aObserver);
sl@0: 	virtual void UnregisterAudioStreamObserver(MAudioStreamObserver& aObserver);
sl@0: 	virtual TInt SetAudioType(const TAudioTypeSettings& aAudioTypeSettings);
sl@0: 	virtual void GetAudioType(TAudioTypeSettings& aAudioTypeSettings) const;
sl@0: 	virtual TAudioStreamId InstanceId() const;
sl@0: 	CAudioStreamManager();
sl@0: 
sl@0: protected: // data
sl@0: 	TAudioStreamId iAudioStreamId;
sl@0: 	TAudioTypeSettings  iAudioTypeSettings;
sl@0: 	RPointerArray<MAudioStreamObserver> iAudioStreamObserver;
sl@0: 
sl@0: private:
sl@0: 	TUid iDtor_ID_Key;
sl@0: 
sl@0: 	};
sl@0: 
sl@0: 
sl@0: // Interface's (abstract base class's) destructor
sl@0: inline CAudioStreamManager::~CAudioStreamManager()
sl@0: 	{
sl@0: 	iAudioStreamObserver.Close();
sl@0: 	REComSession::DestroyedImplementation(iDtor_ID_Key);
sl@0: 	}
sl@0: 
sl@0: // Interface's (abstract base class's) static factory method implementation.
sl@0: // Asks ECOM plugin framework to instantiate appropriate concret plugin
sl@0: // implementation.
sl@0: inline CAudioStreamManager* CAudioStreamManager::NewL(TUid aImplementationUid)
sl@0: 	{
sl@0: 	TAny* ptr = REComSession::CreateImplementationL( aImplementationUid , _FOFF(CAudioStreamManager, iDtor_ID_Key));
sl@0: 	return static_cast<CAudioStreamManager*>(ptr);
sl@0: 	}
sl@0: 
sl@0: inline CAudioStreamManager::CAudioStreamManager()
sl@0: 	{
sl@0: 	//iAudioStreamId
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioStreamManager::RegisterAudioStreamObserver
sl@0: // ---------------------------------------------------------------------------
sl@0: inline TInt CAudioStreamManager::RegisterAudioStreamObserver(MAudioStreamObserver& aObserver)
sl@0: 	{
sl@0: 	TInt err = iAudioStreamObserver.Find(&aObserver);
sl@0: 	if(err == KErrNotFound)
sl@0: 		{
sl@0: 		err = iAudioStreamObserver.Append(&aObserver);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		err = KErrAlreadyExists;
sl@0: 		}
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioStreamManager::UnregisterAudioStreamObserver
sl@0: // ---------------------------------------------------------------------------
sl@0: inline void CAudioStreamManager::UnregisterAudioStreamObserver(MAudioStreamObserver& aObserver)
sl@0: 	{
sl@0: 	TInt idxOrErr = iAudioStreamObserver.Find(&aObserver);
sl@0: 	if( idxOrErr != KErrNotFound )
sl@0: 		{
sl@0: 		iAudioStreamObserver.Remove(idxOrErr);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioStreamManager::InstanceId
sl@0: // ---------------------------------------------------------------------------
sl@0: inline TAudioStreamId CAudioStreamManager::InstanceId() const
sl@0: 	{
sl@0: 	return iAudioStreamId;
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioStreamManager::SetAudioType
sl@0: // ---------------------------------------------------------------------------
sl@0: inline TInt CAudioStreamManager::SetAudioType(const TAudioTypeSettings& aAudioTypeSettings)
sl@0: 	{
sl@0: 	TInt err(KErrNone);
sl@0: 	iAudioTypeSettings = aAudioTypeSettings;
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioStreamManager::GetAudioType
sl@0: // ---------------------------------------------------------------------------
sl@0: inline void CAudioStreamManager::GetAudioType(TAudioTypeSettings& aAudioTypeSettings) const
sl@0: 	{
sl@0: 	aAudioTypeSettings = iAudioTypeSettings;
sl@0: 	}
sl@0: #endif // CAUDIOSTREAMFACTORY_H