src/org/apache/openmeetings/utils/image/ImageUtility.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License") +  you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.openmeetings.utils.image;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

import javax.imageio.ImageIO;

import org.apache.openmeetings.OpenmeetingsVariables;
import org.red5.logging.Red5LoggerFactory;
import org.slf4j.Logger;


	
public class ImageUtility {

	private static final Logger log = Red5LoggerFactory.getLogger(ImageUtility.class, OpenmeetingsVariables.webAppRootKey);
	static {ImageIO.setUseCache(false);}

	public static java.awt.image.BufferedImage read(java.io.InputStream in) throws IOException {
		java.awt.image.BufferedImage image = null;  
		image = ImageIO.read(in);
		if (image == null)
			throw new java.io.IOException("Read fails");                  
		return image;
	}
	 
	public static BufferedImage read(byte[] bytes) {
		try {
			return read(new ByteArrayInputStream(bytes));
		} catch (IOException e) {
			log.error("[read]", e);
			return null;
		}
	} 

	public static byte[] toByteArray(BufferedImage image) {
		try {
			ByteArrayOutputStream out = new ByteArrayOutputStream();
			ImageIO.write(image, "jpeg", out); // write without compression                                
			return out.toByteArray();
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
	}

}