//mmrcclient.h

 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 //

 /**

  @file

  @internalTechnology

 */

 #ifndef RMMRCCLIENT_H

 #define RMMRCCLIENT_H

 // INCLUDES

 #include <e32std.h>

 #include <e32base.h>

 #include <a3f/a3fbase.h>

 #include "maudiostreamadaptationobserver.h"

 class MAudioContext;

 class MLogicalChain;

 class MMultimediaResourceControlObserver;

 class CMMRCServer;

 class CMMRCServerSession;

 class CMMRCClientImplementation;

 class CAudioContext;

 // CLASS DECLARATION

 //

 // This class opens connection and provides functions to MMRC server.

 //

 // @lib mmrcclient.lib

 //

 class RMMRCClient

 	{

 public:

 	IMPORT_C RMMRCClient();

 	IMPORT_C virtual ~RMMRCClient();

     //

      // Open connection to server.

      //

      // @param aConnection Interface to server, must not be connected.

      // @param aCallback Callback interface.

      // @return an error code. KErrNone if successful, otherwise one of the system wide error codes.

      //

 	IMPORT_C TInt Open(MMultimediaResourceControlObserver& aCallback);

     //

      // Zero is invalid Context id and indicates error.

      // @param aProcessId Process Id.

      // @return TUint32 Context Id.

      //

 	IMPORT_C TUint64 LogOn(TProcessId aProcessId);

     //

      // Asynchronous return to ReceiveResourceResponse.

      //

      // @param aMessage Message to be sent.

      // @return an error code. KErrNone if successful, otherwise one of the system wide error codes.

      //

 	IMPORT_C TInt SendResourceRequest(MLogicalChain* aCurrent, MLogicalChain* aDesired, CAudioContext* aContext);

     //

      // Synchronous.

      //

      // @return an error code. KErrNone if successful, otherwise one of the system wide error codes.

      //

 	IMPORT_C TInt SendResourceConfirmation();

     //

      // Synchronous.

      //

      // @return an error code. KErrNone if successful, otherwise one of the system wide error codes.

      //

 	IMPORT_C TInt SendResourceUpdateResult();

     //

      // Synchronous.

      //

      // @return an error code. KErrNone if successful, otherwise one of the system wide error codes.

      //

 	IMPORT_C TInt SendResourceErrorNotification();

 	//

      // Close connection to server.

 	 //

 	IMPORT_C void Close();

 	//

      // Register a client for notification.

 	 //

 	IMPORT_C TInt RegisterAsClient(TUid aEventType, const TDesC8& aNotificationRegistrationData);

 	//

      // Cancel the register of a client for notification.

 	 //

 	IMPORT_C TInt CancelRegisterAsClient(TUid aEventType);

 	//

      // 

 	 //

 	IMPORT_C TInt WillResumePlay();

 	IMPORT_C void ResetMessages();

 private:

 	CMMRCClientImplementation* iImplementation;

 	};

 #endif  // RMMRCCLIENT_H