--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/mmapi_qt/baseline/javasrc.emc/com/nokia/microedition/media/BufferDataSource.java	Tue Aug 31 15:09:22 2010 +0300
@@ -0,0 +1,165 @@
+/*
+* Copyright (c) 2002 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:  Buffered DataSource
+*
+*/
+
+
+package com.nokia.microedition.media;
+
+import javax.microedition.media.Control;
+import javax.microedition.media.protocol.DataSource;
+import javax.microedition.media.protocol.SourceStream;
+import java.io.IOException;
+
+/**
+ * BufferDataSource is used to read header from DataSource's SourceStream.
+ * This class delegates all method calls to DataSource given in constructor
+ * except getStream method which returns buffered SourceStream.
+ */
+public class BufferDataSource extends DataSource
+{
+    // delegated source
+    protected DataSource iDataSource;
+
+    // buffers DataSource's first stream.
+    protected BufferSourceStream iSourceStream;
+
+    /**
+     * Constructor.
+     * @param aDataSource delegated DataSource
+     */
+    public BufferDataSource(DataSource aDataSource) throws IOException
+    {
+        super(aDataSource.getLocator());
+        iDataSource = aDataSource;
+        SourceStream ss = aDataSource.getStreams()[ 0 ];
+        iSourceStream = new BufferSourceStream(ss);
+    }
+
+    /**
+     * Return header data.
+     * @return header data
+     */
+    public byte[] getHeader() throws IOException
+    {
+        return iSourceStream.getHeader();
+    }
+
+    public int readAndBuffer(byte[] aBuffer, int aOffset, int aLength) throws IOException
+    {
+        return iSourceStream.readAndBuffer(aBuffer, aOffset, aLength);
+    }
+
+    /**
+     * from DataSource
+     * @return Content Type
+     * @see DataSource
+     */
+    public String getContentType()
+    {
+        return iDataSource.getContentType();
+    }
+
+    /**
+     * from DataSource
+     * Connect to the stream
+     * @throws IOException
+     * @see DataSource
+     */
+    public void connect() throws IOException
+    {
+        iDataSource.connect();
+    }
+
+    /**
+     * from DataSource
+     * Disconnect from the stream
+     */
+    public void disconnect()
+    {
+        iDataSource.disconnect();
+    }
+
+    /**
+     * from DataSource
+     * Put DataSource to STARTED state
+     * @throws IOException Throw if DataSource is in wrong state
+     * @see DataSource
+     */
+    public void start() throws IOException
+    {
+        iDataSource.start();
+    }
+
+    /**
+     * from DataSource
+     * Stops DataSource
+     * @see DataSource
+     */
+    public void stop() throws IOException
+    {
+        iDataSource.stop();
+    }
+
+    /**
+     * from DataSource
+     * return sourceStreams of the DataSource
+     *
+     * @return set of source streams
+     * @see DataSource
+     */
+    public SourceStream[] getStreams()
+    {
+        // return all streams from delegated DataSource except first
+        // buffered stream.
+        SourceStream[] originalStreams = iDataSource.getStreams();
+        SourceStream[] streams = new SourceStream[ originalStreams.length ];
+        System.arraycopy(originalStreams, 0,
+                         streams, 0, originalStreams.length);
+        streams[ 0 ] = iSourceStream;
+        return streams;
+    }
+
+    /**
+     * from interface Controllable
+     * Method return controls of the DataSource
+     * @return Control
+     * @see Controllable
+     * @see DataSource
+     */
+    public Control[] getControls()
+    {
+        return iDataSource.getControls();
+    }
+
+    /**
+     * from interface Controllable
+     * Return a control by the Control Type, not supported
+     * @param controlType type of the control
+     * @return Control
+     */
+    public Control getControl(String aControlType)
+    {
+        return iDataSource.getControl(aControlType);
+    }
+
+    public DataSource getDataSource()
+    {
+        return iDataSource;
+    }
+
+}
+// End of File
+