UnusedInputStream.java

/*
 * PS3 Media Server, for streaming any medias to your PS3.
 * Copyright (C) 2008  A.Brochard
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; version 2
 * of the License only.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package net.pms.io;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.InputStream;

public abstract class UnusedInputStream extends InputStream {
	private static final Logger logger = LoggerFactory.getLogger(UnusedInputStream.class);
	private InputStream inputStream;
	private UnusedProcess processToTerminate;
	private int timeout;

	public UnusedInputStream(InputStream inputStream, UnusedProcess processToTerminate, int timeout) {
		this.inputStream = inputStream;
		this.processToTerminate = processToTerminate;
		this.timeout = timeout;
		processToTerminate.setReadyToStop(false);
	}

	public int available() throws IOException {
		return inputStream.available();
	}

	public void close() throws IOException {
		inputStream.close();
		if (processToTerminate != null) {
			processToTerminate.setReadyToStop(true);
		}
		Runnable checkEnd = new Runnable() {
			public void run() {
				try {
					Thread.sleep(timeout);
				} catch (InterruptedException e) {
					logger.error(null, e);
				}
				if (processToTerminate != null && processToTerminate.isReadyToStop()) {
					logger.debug("Destroying / Stopping attached process: " + processToTerminate);
					if (processToTerminate != null) {
						processToTerminate.stopProcess();
					}
					processToTerminate = null;
					unusedStreamSignal();
				}
			}
		};
		new Thread(checkEnd, "Process Reaper").start();
	}

	public int read() throws IOException {
		return inputStream.read();
	}

	public int read(byte[] b, int off, int len) throws IOException {
		return inputStream.read(b, off, len);
	}

	public long skip(long n) throws IOException {
		return inputStream.skip(n);
	}

	public String toString() {
		return inputStream.toString();
	}

	public abstract void unusedStreamSignal();
}