/*
 *   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.mina.example.imagine.step1.codec;

import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.example.imagine.step1.ImageRequest;
import org.apache.mina.filter.codec.ProtocolEncoder;
import org.apache.mina.filter.codec.ProtocolEncoderOutput;

/**
 * an encoder for {@link ImageRequest} objects 
 *
 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
 */

public class ImageRequestEncoder implements ProtocolEncoder {

    public void encode(IoSession session, Object message, ProtocolEncoderOutput out) throws Exception {
        ImageRequest request = (ImageRequest) message;
        IoBuffer buffer = IoBuffer.allocate(12, false);
        buffer.putInt(request.getWidth());
        buffer.putInt(request.getHeight());
        buffer.putInt(request.getNumberOfCharacters());
        buffer.flip();
        out.write(buffer);
    }

    public void dispose(IoSession session) throws Exception {
        // nothing to dispose
    }
}
