diff -r ed1c9f64298a -r 5b9d4d8641ce trace/traceviewer/com.nokia.traceviewer/src/com/nokia/traceviewer/engine/DataReader.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trace/traceviewer/com.nokia.traceviewer/src/com/nokia/traceviewer/engine/DataReader.java	Wed Jun 23 14:49:59 2010 +0300
@@ -0,0 +1,133 @@
+/*
+ * 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:
+ *
+ * DataReader interface
+ *
+ */
+package com.nokia.traceviewer.engine;
+
+/**
+ * DataReader interface
+ */
+public interface DataReader {
+
+	/**
+	 * Clears file
+	 */
+	public void clearFile();
+
+	/**
+	 * Creates scroll reader
+	 * 
+	 * @param mediaCallback
+	 *            callback
+	 * @param conf
+	 *            TraceConfiguration to use with this scroll reader
+	 * @return new scroll reader
+	 */
+	public DataScrollReader createScrollReader(MediaCallback mediaCallback,
+			TraceConfiguration conf);
+
+	/**
+	 * Gets file map
+	 * 
+	 * @return file map
+	 */
+	public FileMap getFileMap();
+
+	/**
+	 * Gets file path
+	 * 
+	 * @return file path
+	 */
+	public String getFilePath();
+
+	/**
+	 * Gets file start offset
+	 * 
+	 * @return file start offset
+	 */
+	public long getFileStartOffset();
+
+	/**
+	 * Gets trace count
+	 * 
+	 * @return trace count
+	 */
+	public int getTraceCount();
+
+	/**
+	 * Gets current trace position in file
+	 * 
+	 * @return current trace position in file
+	 */
+	public long getTracePositionInFile();
+
+	/**
+	 * Gets trace configuration
+	 * 
+	 * @return trace configuration
+	 */
+	public TraceConfiguration getTraceConfiguration();
+
+	/**
+	 * Tells if this reader is paused
+	 * 
+	 * @return pause status
+	 */
+	public boolean isPaused();
+
+	/**
+	 * Pauses the reader
+	 * 
+	 * @param pause
+	 *            pause status
+	 */
+	public void pause(boolean pause);
+
+	/**
+	 * Sets file path
+	 * 
+	 * @param filePath
+	 *            file path
+	 */
+	public void setFilePath(String filePath);
+
+	/**
+	 * Sets file position
+	 * 
+	 * @param filePos
+	 *            the new file position
+	 */
+	public void setFilePosition(long filePos);
+
+	/**
+	 * Sets file start offset
+	 * 
+	 * @param fileStartOffset
+	 *            file start offset
+	 */
+	public void setFileStartOffset(long fileStartOffset);
+
+	/**
+	 * Shuts down this DataReader
+	 */
+	public void shutdown();
+
+	/**
+	 * Read data from file
+	 */
+	public void start();
+}