bytearrayimagesource.java

aglet的部分源码

package com.ibm.aglets;

/*
 * @(#)ByteArrayImageSource.java
 * 
 * IBM Confidential-Restricted
 * 
 * OCO Source Materials
 * 
 * 03L7246 (c) Copyright IBM Corp. 1996, 1998
 * 
 * The source code for this program is not published or otherwise
 * divested of its trade secrets, irrespective of what has been
 * deposited with the U.S. Copyright Office.
 */

import java.io.*;
import sun.awt.image.FileImageSource;
import sun.awt.image.ImageDecoder;
import sun.awt.image.GifImageDecoder;
import sun.awt.image.JPEGImageDecoder;
import sun.awt.image.XbmImageDecoder;

public class ByteArrayImageSource extends FileImageSource {
	byte buf[];
	String type;

	public ByteArrayImageSource(byte b[], String t) {
		super(null);
		buf = b;
		type = t;
	}
	protected ImageDecoder getDecoder() {
		InputStream inputStream = new ByteArrayInputStream(buf);

		if (type != null) {
			if (type.equals("gif")) {
				return new GifImageDecoder(this, inputStream);
			} 
			if (type.equals("jpeg") || type.equals("jpg") 
					|| type.equals("jpe") || type.equals("jfif")) {
				return new JPEGImageDecoder(this, inputStream);

			} 
			if (type.equals("xbm")) {
				return new XbmImageDecoder(this, inputStream);
			} 
		} 

		return super.getDecoder(inputStream);
	}
}