--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/upnpavcontroller/upnprenderingstatemachine/inc/upnprenderingoperationexecutor.h Wed Nov 03 11:45:09 2010 +0200
@@ -0,0 +1,77 @@
+/*
+* 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: An interface that executes rendering operations
+*
+*/
+
+#ifndef C_UPNPRENDERINGOPERATIONEXECUTOR_H
+#define C_UPNPRENDERINGOPERATIONEXECUTOR_H
+
+// INCLUDES
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class TUpnpRenderingOperation;
+
+/**
+ * An interface that is able to receive rendering operation items
+ * and execute them. The interface is being used by the rendering
+ * operation queue class.
+ */
+NONSHARABLE_CLASS( MUpnpRenderingOperationExecutor )
+ {
+ public:
+
+ /**
+ * Result of executing or processing an item
+ */
+ enum TResult
+ {
+ EQueue = 0, // Wait until other operations finished first
+ EContinue = 1, // operation started and it will continue
+ ECompleted = 2 // operation finished
+ };
+
+ /**
+ * Executes a new operation
+ * @param aOperation new operation to execute
+ * @param aCurrent operation currently ongoing,
+ or ENone if we are idle
+ * @return EQueue if can't execute in parallel,
+ * ECompleted if finished, or
+ * EContinue if this operation will continue running
+ */
+ virtual TResult ExecuteOperationL(
+ const TUpnpRenderingOperation& aOperation,
+ const TUpnpRenderingOperation& aCurrent ) = 0;
+
+ /**
+ * Processes an operation with some abstract input
+ */
+ virtual TResult ProcessOperationL(
+ const TUpnpRenderingOperation& aOperation, TInt aEvent,
+ TInt aError, const TAny* aParam1, const TAny* aParam2 ) = 0;
+
+ /**
+ * Executor should handle an error that occurred in ExecuteOperationL
+ * @param aOperation currently ongoing operation, the one that failed
+ * @param aError the error code
+ */
+ virtual void HandleAsyncError(
+ const TUpnpRenderingOperation& aOperation, TInt aLeave ) = 0;
+
+ };
+
+#endif // C_UPNPRENDERINGOPERATIONEXECUTOR_H
+