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// $Id: DummySource.java,v 1.6 2003/10/07 21:46:00 idgay Exp $
/* tab:4
* "Copyright (c) 2000-2003 The Regents of the University of California.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice, the following
* two paragraphs and the author appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
*
* Copyright (c) 2002-2003 Intel Corporation
* All rights reserved.
*
* This file is distributed under the terms in the attached INTEL-LICENSE
* file. If you do not find these files, copies can be found by writing to
* Intel Research Berkeley, 2150 Shattuck Avenue, Suite 1300, Berkeley, CA,
* 94704. Attention: Intel License Inquiry.
*/
package net.tinyos.packet;
import java.io.*;
/**
* "dummy" packet source
*/
class DummySource extends AbstractSource
{
private byte[] dummyPacket = null;
private int nReadDelay = 1000;
final static int dummySize = 4;
/**
* Packetizers are built using the makeXXX methods in BuildSource
*/
DummySource() {
super("dummy");
}
protected void openSource() {
dummyPacket = new byte[dataOffset + dummySize];
dummyPacket[0] = (byte)0x7E;
for (int i = 1; i < dummyPacket.length - 2; i++)
dummyPacket[i] = (byte)i;
dummyPacket[lengthOffset] = dummySize;
}
protected void closeSource() {
}
protected byte[] readSourcePacket() throws IOException {
try {
Thread.currentThread ().sleep( nReadDelay );
}
catch (InterruptedException e ) {
throw new IOException("interrupted");
}
return dummyPacket;
}
}
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