--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsound/a3facf/inc/maudiodatasupplier.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,60 @@
+/*
+* Copyright (c) 2006-2009 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
+ @publishedPartner 
+ @released
+*/
+
+#ifndef MAUDIODATASUPPLIER_H
+#define MAUDIODATASUPPLIER_H
+
+#include <a3f/a3fbase.h>
+
+class MMMFBufferSource;
+class CMMFBuffer;
+
+/**
+ * An interface to a set of callback functions that a buffer source client must implement.
+ */
+class MMMFAudioDataSupplier
+	{
+	public:
+	/**
+	 * Request a buffer to be filled with audio data.
+	 *
+	 * After filling the buufer, the client must call MBufferSource::BufferFilled() passing the filled buffer as a parameter.
+	 * 
+	 * @param aSource a pointer to the source requesting the buffer.
+	 * @param aBuffer a pointer to the buffer to fill.
+	 */
+	virtual void BufferToBeFilled(MMMFBufferSource* aSource, CMMFBuffer* aBuffer)=0;
+
+	/**
+	 * Indicates that all buffers originating from this source have been removed from the audio path.
+	 * Also, all pending buffers previously requested by this source have become invalid and must not be used.
+	 *
+	 * @param aSource the source whose previous buffer requests should be ignored.
+	 */
+	virtual void DiscardBuffers(MMMFBufferSource* aSource)=0;
+	};
+
+#endif // MAUDIODATASUPPLIER_H