diff -r ed1c9f64298a -r 5b9d4d8641ce trace/traceviewer/com.nokia.traceviewer.ost/src/com/nokia/traceviewer/ost/OstMessageCallback.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trace/traceviewer/com.nokia.traceviewer.ost/src/com/nokia/traceviewer/ost/OstMessageCallback.java	Wed Jun 23 14:49:59 2010 +0300
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2007-2010 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:
+ *
+ * OST message callback interface
+ *
+ */
+package com.nokia.traceviewer.ost;
+
+import java.io.IOException;
+
+/**
+ * OST message callback interface
+ * 
+ */
+public interface OstMessageCallback {
+
+	/**
+	 * Processes message
+	 * 
+	 * @param msgStart
+	 *            start offset of message
+	 * @param msgLength
+	 *            message length
+	 * @param headerLength
+	 *            header length
+	 * @param headerVersion
+	 *            header version
+	 * @return true if processing should be continued, false otherwise
+	 * @throws IOException
+	 */
+	boolean processMessage(int msgStart, int msgLength, int headerLength,
+			int headerVersion) throws IOException;
+
+}