--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/upnpavcontroller/upnpavcontrollerhelper/src/upnpabstractrenderingsessionobserver.cpp	Thu Dec 17 08:52:00 2009 +0200
@@ -0,0 +1,227 @@
+/*
+* Copyright (c) 2007 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 abstract rendering session observer implementation
+*
+*/
+
+
+
+
+
+
+// INCLUDE FILES
+#include "upnpavrenderingsession.h"
+#include "upnpavrenderingsessionobserver.h"
+
+#include "upnpabstractrenderingsessionobserver.h"
+
+_LIT( KComponentLogfile, "upnpavcontrollerhelper.txt");
+#include "upnplog.h"
+
+// CONSTANTS
+
+
+// METHODS
+
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::CUPnPAbstractRenderingSessionObs
+//---------------------------------------------------------------------------
+EXPORT_C CUPnPAbstractRenderingSessionObserver::
+    CUPnPAbstractRenderingSessionObserver()
+    {
+    }
+
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::~CUPnPAbstractRenderingSessionObs
+//---------------------------------------------------------------------------
+EXPORT_C CUPnPAbstractRenderingSessionObserver::
+    ~CUPnPAbstractRenderingSessionObserver()
+    {
+    DisableSessionObserver();
+    }
+
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::SetSession
+//---------------------------------------------------------------------------
+EXPORT_C void CUPnPAbstractRenderingSessionObserver::SetSession(
+    MUPnPAVRenderingSession& aHostSession )
+    {
+    // observer bust be disabled when calling this!
+    __ASSERTD( !iObserverEnabled, __FILE__, __LINE__ );
+    iObservedSession = &aHostSession;
+    }
+
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::EnableSessionObserver
+//---------------------------------------------------------------------------
+EXPORT_C void CUPnPAbstractRenderingSessionObserver::EnableSessionObserver()
+    {
+    __LOG( "AbstractObserver:EnableSessionObserver()" );
+    if ( !iObserverEnabled )
+        {
+        // take original observer as proxy
+        iProxyObserver = iObservedSession->Observer();
+        iObservedSession->RemoveObserver();
+        iObservedSession->SetObserver( *this );
+        iObserverEnabled = ETrue;
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::DisableSessionObserver
+//---------------------------------------------------------------------------
+EXPORT_C void CUPnPAbstractRenderingSessionObserver::DisableSessionObserver()
+    {
+    if ( iObserverEnabled )
+        {
+        __LOG( "AbstractObserver:DisableSessionObserver()" );
+        __ASSERTD( iObservedSession != 0, __FILE__, __LINE__ );
+        // check we still are still the observer !!!
+        if ( iObservedSession->Observer() == this )
+            {
+            iObservedSession->RemoveObserver();
+            if ( iProxyObserver )
+                {
+                // set proxy observer back
+                iObservedSession->SetObserver( *iProxyObserver );
+                iProxyObserver = 0;
+                }
+            }
+        else
+            {
+            __LOG( "Disable: Not disabling - wrong observer!" );
+            }
+        iObserverEnabled = EFalse;
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::IsSessionObserverEnabled
+//---------------------------------------------------------------------------
+EXPORT_C TBool CUPnPAbstractRenderingSessionObserver::
+    IsSessionObserverEnabled()
+    {
+    return iObserverEnabled;
+    }
+
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::VolumeResult
+//---------------------------------------------------------------------------
+void CUPnPAbstractRenderingSessionObserver::VolumeResult(
+    TInt aError, TInt aVolumeLevel,
+    TBool aActionResponse )
+    {
+    __ASSERTD( iObserverEnabled, __FILE__, __LINE__ );
+    if ( iProxyObserver )
+        {
+        iProxyObserver->VolumeResult( aError, aVolumeLevel, aActionResponse );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::MuteResult
+//---------------------------------------------------------------------------
+void CUPnPAbstractRenderingSessionObserver::MuteResult(
+    TInt aError, TBool aMute,
+    TBool aActionResponse )
+    {
+    __ASSERTD( iObserverEnabled, __FILE__, __LINE__ );
+    if ( iProxyObserver )
+        {
+        iProxyObserver->MuteResult( aError, aMute, aActionResponse );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::InteractOperationComplete
+//---------------------------------------------------------------------------
+void CUPnPAbstractRenderingSessionObserver::InteractOperationComplete(
+    TInt aError, TUPnPAVInteractOperation aOperation )
+    {
+    __ASSERTD( iObserverEnabled, __FILE__, __LINE__ );
+    if ( iProxyObserver )
+        {
+        iProxyObserver->InteractOperationComplete( aError, aOperation );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::PositionInfoResult
+//---------------------------------------------------------------------------
+void CUPnPAbstractRenderingSessionObserver::PositionInfoResult( TInt aError,
+    const TDesC8& aTrackPosition, const TDesC8& aTrackLength )
+    {
+    __ASSERTD( iObserverEnabled, __FILE__, __LINE__ );
+    if ( iProxyObserver )
+        {
+        iProxyObserver->PositionInfoResult( aError,
+            aTrackPosition, aTrackLength );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::SetURIResult
+//---------------------------------------------------------------------------
+void CUPnPAbstractRenderingSessionObserver::SetURIResult( TInt aError )
+    {
+    __ASSERTD( iObserverEnabled, __FILE__, __LINE__ );
+    if ( iProxyObserver )
+        {
+        iProxyObserver->SetURIResult( aError );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::SetNextURIResult
+//---------------------------------------------------------------------------
+void CUPnPAbstractRenderingSessionObserver::SetNextURIResult( TInt aError )
+    {
+    __ASSERTD( iObserverEnabled, __FILE__, __LINE__ );
+    if ( iProxyObserver )
+        {
+        iProxyObserver->SetNextURIResult( aError );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::MediaRendererDisappeared
+//---------------------------------------------------------------------------
+void CUPnPAbstractRenderingSessionObserver::MediaRendererDisappeared(
+    TUPnPDeviceDisconnectedReason aReason )
+    {
+    __ASSERTD( iObserverEnabled, __FILE__, __LINE__ );
+    if ( iProxyObserver )
+        {
+        iProxyObserver->MediaRendererDisappeared( aReason );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUPnPAbstractRenderingSessionObserver::ReserveLocalMSServicesCompleted
+//---------------------------------------------------------------------------
+void CUPnPAbstractRenderingSessionObserver::ReserveLocalMSServicesCompleted(
+    TInt aError )
+    {
+    __ASSERTD( iObserverEnabled, __FILE__, __LINE__ );
+    if ( iProxyObserver )
+        {
+        iProxyObserver->ReserveLocalMSServicesCompleted( aError );
+        }
+    }
+