diff -r 000000000000 -r b8ed18f6c07b devsound/a3fdevsound/inc/mdevsoundadaptationinfoobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsound/a3fdevsound/inc/mdevsoundadaptationinfoobserver.h	Thu Oct 07 22:34:12 2010 +0100
@@ -0,0 +1,60 @@
+// 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:
+//
+ 
+#ifndef MDEVSOUNDADAPTATIONINFOOBSERVER_H
+#define MDEVSOUNDADAPTATIONINFOOBSERVER_H
+
+/**
+@publishedPartner
+@file
+@released
+ */
+
+#include <e32base.h>
+#include <a3f/a3fbase.h>
+
+
+/**
+ *  An interface to a set of A3FDevSoundAdaptationInfo callback functions.
+ *
+ *  This serves as the method of communication between the A3FDevSoundAdaptationInfo 
+ *  and the client
+ *
+ */
+class MA3FDevSoundAdaptationInfoObserver
+	{
+public:
+	/**
+	* Notifies the observer of the max gain supported
+	*
+	* @param aCodecType the UID passed to the original RequestMaxGain() call
+	* @param aError an standard symbian error code. KErrNone if succesful
+	* @param aResult the supported MaxGain/MaxVolume value, if aError==KErrNone
+	*/
+	virtual void RequestMaxGainComplete (TUid aCodecType, TInt aError, TInt aResult)=0;
+
+
+	/**
+	* Notifies the observer that the max ramp time supported by the gain
+	* control has changed.
+	*
+	* @param aCodecType the UID passed to the original RequestSupportedForamts() call
+	* @param aError an standard symbian error code. KErrNone if succesful
+	*/
+	virtual void RequestSupportedFormatsComplete(TUid aCodecType, TInt aError)=0;
+
+	};
+
+#endif //MDEVSOUNDADAPTATIONINFOOBSERVER_H