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.CumulativeProtocolDecoder;
26 import org.apache.mina.filter.codec.ProtocolDecoderOutput;
27
28 /**
29 * a decoder for {@link ImageRequest} objects
30 *
31 * @author The Apache MINA Project (dev@mina.apache.org)
32 */
33
34 public class ImageRequestDecoder extends CumulativeProtocolDecoder {
35
36 protected boolean doDecode(IoSession session, IoBuffer in, ProtocolDecoderOutput out) throws Exception {
37 if (in.remaining() >= 12) {
38 int width = in.getInt();
39 int height = in.getInt();
40 int numberOfCharachters = in.getInt();
41 ImageRequest request = new ImageRequest(width, height, numberOfCharachters);
42 out.write(request);
43 return true;
44 } else {
45 return false;
46 }
47 }
48 }