FilterImageOutputStream.java

/**
 * @(#)FilterImageOutputStream.java  1.0  15.06.2008
 *
 * Copyright (c) 2008 Werner Randelshofer
 * Hausmatt 10, CH-6405 Immensee, Switzerland
 * All rights reserved.
 *
 * The copyright of this software is owned by Werner Randelshofer. 
 * You may not use, copy or modify this software, except in  
 * accordance with the license agreement you entered into with  
 * Werner Randelshofer. For details see accompanying license terms. 
 */

package evopaint.util.avi;

import java.io.*;
import javax.imageio.stream.ImageOutputStream;

/**
 * FilterImageOutputStream adapts a ImageOutputStream to the FilterOutputStream 
 * interface.
 *
 * @author Werner Randelshofer
 * @version 1.0 15.06.2008 Created.
 */
public class FilterImageOutputStream extends FilterOutputStream {
    private ImageOutputStream imgOut;
    
    public FilterImageOutputStream(ImageOutputStream iOut) {
        super(null);
        this.imgOut = iOut;
    }
    /**
     * Writes the specified <code>byte</code> to this output stream. 
     * <p>
     * The <code>write</code> method of <code>FilterOutputStream</code> 
     * calls the <code>write</code> method of its underlying output stream, 
     * that is, it performs <tt>out.write(b)</tt>.
     * <p>
     * Implements the abstract <tt>write</tt> method of <tt>OutputStream</tt>. 
     *
     * @param      b   the <code>byte</code>.
     * @exception  IOException  if an I/O error occurs.
     */
    @Override
    public void write(int b) throws IOException {
	imgOut.write(b);
    }

    /**
     * Writes <code>len</code> bytes from the specified 
     * <code>byte</code> array starting at offset <code>off</code> to 
     * this output stream. 
     * <p>
     * The <code>write</code> method of <code>FilterOutputStream</code> 
     * calls the <code>write</code> method of one argument on each 
     * <code>byte</code> to output. 
     * <p>
     * Note that this method does not call the <code>write</code> method 
     * of its underlying input stream with the same arguments. Subclasses 
     * of <code>FilterOutputStream</code> should provide a more efficient 
     * implementation of this method. 
     *
     * @param      b     the data.
     * @param      off   the start offset in the data.
     * @param      len   the number of bytes to write.
     * @exception  IOException  if an I/O error occurs.
     * @see        java.io.FilterOutputStream#write(int)
     */
    @Override
    public void write(byte b[], int off, int len) throws IOException {
	imgOut.write(b, off, len);
    }

    /**
     * Flushes this output stream and forces any buffered output bytes 
     * to be written out to the stream. 
     * <p>
     * The <code>flush</code> method of <code>FilterOutputStream</code> 
     * calls the <code>flush</code> method of its underlying output stream. 
     *
     * @exception  IOException  if an I/O error occurs.
     * @see        java.io.FilterOutputStream#out
     */
    @Override
    public void flush() throws IOException {
        //System.err.println(this+" discarded flush");
	//imgOut.flush();
    }

    /**
     * Closes this output stream and releases any system resources 
     * associated with the stream. 
     * <p>
     * The <code>close</code> method of <code>FilterOutputStream</code> 
     * calls its <code>flush</code> method, and then calls the 
     * <code>close</code> method of its underlying output stream. 
     *
     * @exception  IOException  if an I/O error occurs.
     * @see        java.io.FilterOutputStream#flush()
     * @see        java.io.FilterOutputStream#out
     */
    @Override
    public void close() throws IOException {
	try {
	  flush();
	} catch (IOException ignored) {
	}
	imgOut.close();
    }
}