diff -r 000000000000 -r b8ed18f6c07b devsoundextensions/effects/EffectBase/src/AudioEffectBase.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsoundextensions/effects/EffectBase/src/AudioEffectBase.cpp	Thu Oct 07 22:34:12 2010 +0100
@@ -0,0 +1,134 @@
+/*
+* Copyright (c) 2004 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:   Implementation of the base class for effects.
+*
+*/
+
+
+
+// INCLUDE FILES
+
+#ifdef _DEBUG
+#include <e32svr.h>
+#endif
+#include <AudioEffectBase.h>
+#include <MAudioEffectObserver.h>
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CAudioEffect::CAudioEffect
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CAudioEffect::CAudioEffect()
+    : 	iEnabled(EFalse),
+    	iEnforced(EFalse),
+    	iHaveUpdateRights(ETrue)
+    {
+    }
+
+
+// Destructor
+EXPORT_C CAudioEffect::~CAudioEffect()
+    {
+	iObservers.Close();
+    }
+
+// -----------------------------------------------------------------------------
+// CAudioEffect::IsEnable
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TBool CAudioEffect::IsEnabled() const
+    {
+	return iEnabled;
+    }
+
+// -----------------------------------------------------------------------------
+// CAudioEffect::Enable
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CAudioEffect::EnableL()
+    {
+	iEnabled = ETrue;
+	ApplyL();
+    }
+
+// -----------------------------------------------------------------------------
+// CAudioEffect::Disable
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CAudioEffect::DisableL()
+    {
+	iEnabled = EFalse;
+	ApplyL();
+    }
+
+// -----------------------------------------------------------------------------
+// CAudioEffect::Enforce
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CAudioEffect::EnforceL(
+	TBool aEnforced )
+    {
+	iEnforced = aEnforced;
+	ApplyL();
+    }
+
+// -----------------------------------------------------------------------------
+// CAudioEffect::HaveUpdateRights
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TBool CAudioEffect::HaveUpdateRights() const
+    {
+	return iHaveUpdateRights;
+    }
+
+// -----------------------------------------------------------------------------
+// CAudioEffect::IsEnforced
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TBool CAudioEffect::IsEnforced() const
+    {
+	return iEnforced;
+    }
+
+// -----------------------------------------------------------------------------
+// CVolume::RegisterObserverL
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CAudioEffect::RegisterObserverL(
+	MAudioEffectObserver& aObserver )
+	{
+	User::LeaveIfError(iObservers.Append(&aObserver));
+	}
+
+// -----------------------------------------------------------------------------
+// CVolume::UnRegisterObserver
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CAudioEffect::UnRegisterObserver(
+	MAudioEffectObserver& aObserver )
+	{
+	TInt index = iObservers.Find(&aObserver);
+	if( index != KErrNotFound )
+		{
+		iObservers.Remove(index);
+		}
+	}
+
+// ========================== OTHER EXPORTED FUNCTIONS =========================
+
+// End of File