01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one
03: * or more contributor license agreements. See the NOTICE file
04: * distributed with this work for additional information
05: * regarding copyright ownership. The ASF licenses this file
06: * to you under the Apache License, Version 2.0 (the
07: * "License"); you may not use this file except in compliance
08: * with the License. You may obtain a copy of the License at
09: *
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.common.IoBuffer;
23: import org.apache.mina.common.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: * @version $Rev$, $Date$
33: */
34:
35: public class ImageRequestDecoder extends CumulativeProtocolDecoder {
36:
37: protected boolean doDecode(IoSession session, IoBuffer in,
38: ProtocolDecoderOutput out) throws Exception {
39: if (in.remaining() >= 12) {
40: int width = in.getInt();
41: int height = in.getInt();
42: int numberOfCharachters = in.getInt();
43: ImageRequest request = new ImageRequest(width, height,
44: numberOfCharachters);
45: out.write(request);
46: return true;
47: } else {
48: return false;
49: }
50: }
51: }
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