--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmmw_plat/telephony_multimedia_service_api/inc/tmsclientsourceobsrvr.h	Tue Feb 02 01:08:46 2010 +0200
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 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:This class provides callback mechanism for TMSClientSource
+ * listeners.
+ *
+ */
+
+#ifndef TMS_CLIENT_SOURCE_OBSRVR_H
+#define TMS_CLIENT_SOURCE_OBSRVR_H
+
+// Include files
+#include <glib.h>
+
+namespace TMS {
+
+// FORWARD DECLARATIONS
+class TMSBuffer;
+
+/**
+ * TMSClientSourceObserver class
+ *
+ * This class provides callback mechanism for TMSClientSource listeners.
+ *
+ * Client class that wants to send data to TMS must inherit from
+ * TMSClientSourceObserver class and register itself with the TMSBuffer and
+ * TMSClientSource objects.
+ *
+ * Functions declared in this class are called upon TMSBuffer events.
+ *
+ * The client must not do any blocking, or perform any CPU-intensive operations
+ * in the callback methods. It is recommended that the client saves event data,
+ * returns from this function immediately and if necessary, responds to
+ * the event in asynchronous way.
+ *
+ * @lib tmsapi.lib
+ *
+ */
+class TMSClientSourceObserver
+    {
+public:
+    /**
+     * This method is called by the TMS when it wants data from the client
+     * and provides buffer to be filled by the client in the PULL MODE.
+     *
+     * @param  buffer
+     *      Buffer to be filled by the client.
+     *
+     */
+    virtual void FillBuffer(TMSBuffer& buffer) = 0;
+
+    /**
+     * This method is called by the TMS server in the PUSH MODE to indicate
+     * previously submitted data buffer has been processed and more data can
+     * now be accepted for processing. The processed buffer is returned back
+     * to the client.
+     *
+     * @param  buffer
+     *      Buffer which has been processed and returned to the client.
+     *
+     * @param  reason
+     *      The status of the operation.
+     *
+     */
+    virtual void BufferProcessed(TMSBuffer* buffer, gint reason) = 0;
+    };
+
+} //namespace TMS
+
+#endif // TMS_CLIENT_SOURCE_OBSRVR_H
+
+// End of file