com.apitrary.orm.codec.image.ImageJPGCodec.java Source code

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Here is the source code for com.apitrary.orm.codec.image.ImageJPGCodec.java

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/*
 * Copyright 2012-2013 Denis Neuling 
 * 
 * Licensed 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 com.apitrary.orm.codec.image;

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

import javax.imageio.ImageIO;

import org.apache.commons.codec.binary.Base64;

import com.apitrary.orm.core.codec.Codec;

/**
 * <p>
 * ImageJPGCodec class.
 * </p>
 *
 * @author Denis Neuling (denisneuling@gmail.com)
 * @since 0.1.1
 *
 */
public class ImageJPGCodec extends Codec<Image> {

    private static final String FORMAT = "jpg";

    /** {@inheritDoc} */
    @Override
    public Image decode(String value) {
        if (value == null || value.isEmpty()) {
            return null;
        }
        byte[] buffer = Base64.decodeBase64(value);
        InputStream in = new ByteArrayInputStream(buffer);
        BufferedImage bImageFromConvert;
        try {
            bImageFromConvert = ImageIO.read(in);
            return bImageFromConvert;
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    /** {@inheritDoc} */
    @Override
    public String encode(Image image) {
        if (image == null) {
            return null;
        }
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        try {
            ImageIO.write((BufferedImage) image, FORMAT, byteArrayOutputStream);
            byte[] imageData = byteArrayOutputStream.toByteArray();
            return Base64.encodeBase64String(imageData);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}