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    1   /*
    2    *   Licensed to the Apache Software Foundation (ASF) under one
    3    *   or more contributor license agreements.  See the NOTICE file
    4    *   distributed with this work for additional information
    5    *   regarding copyright ownership.  The ASF licenses this file
    6    *   to you under the Apache License, Version 2.0 (the
    7    *   "License"); you may not use this file except in compliance
    8    *   with the License.  You may obtain a copy of the License at
    9    *
    10   *     http://www.apache.org/licenses/LICENSE-2.0
    11   *
    12   *   Unless required by applicable law or agreed to in writing,
    13   *   software distributed under the License is distributed on an
    14   *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    15   *   KIND, either express or implied.  See the License for the
    16   *   specific language governing permissions and limitations
    17   *   under the License.
    18   *
    19   */
    20  package org.apache.mina.example.imagine.step1.codec;
    21
    22  import org.apache.mina.core.buffer.IoBuffer;
    23  import org.apache.mina.core.session.IoSession;
    24  import org.apache.mina.example.imagine.step1.ImageRequest;
    25  import org.apache.mina.filter.codec.ProtocolEncoder;
    26  import org.apache.mina.filter.codec.ProtocolEncoderOutput;
    27
    28  /**
    29   * an encoder for {@link ImageRequest} objects
    30   *
    31   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
    32   */
    33
    34  public class ImageRequestEncoder implements ProtocolEncoder {
    35
    36      public void encode(IoSession session, Object message, ProtocolEncoderOutput out) throws Exception {
    37          ImageRequest request = (ImageRequest) message;
    38          IoBuffer buffer = IoBuffer.allocate(12, false);
    39          buffer.putInt(request.getWidth());
    40          buffer.putInt(request.getHeight());
    41          buffer.putInt(request.getNumberOfCharacters());
    42          buffer.flip();
    43          out.write(buffer);
    44      }
    45
    46      public void dispose(IoSession session) throws Exception {
    47          // nothing to dispose
    48      }
    49  }