1 /*
2 * Copyright 2010 Red Hat, Inc.
3 *
4 * Red Hat licenses this file to you under the Apache License, version 2.0
5 * (the "License"); you may not use this file except in compliance with the
6 * License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.handler.codec.rtsp;
17
18 import org.jboss.netty.buffer.ChannelBuffer;
19 import org.jboss.netty.channel.Channel;
20 import org.jboss.netty.channel.ChannelHandlerContext;
21 import org.jboss.netty.channel.ChannelHandler.Sharable;
22 import org.jboss.netty.handler.codec.http.HttpMessage;
23 import org.jboss.netty.handler.codec.http.HttpMessageEncoder;
24
25 /**
26 * Encodes an RTSP message represented in {@link HttpMessage} into
27 * a {@link ChannelBuffer}.
28
29 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
30 * @author <a href="http://amitbhayani.blogspot.com/">Amit Bhayani</a>
31 * @author <a href="http://gleamynode.net/">Trustin Lee</a>
32 * @version $Rev: 2243 $, $Date: 2010-04-16 14:01:55 +0900 (Fri, 16 Apr 2010) $
33 *
34 * @apiviz.landmark
35 */
36 @Sharable
37 public abstract class RtspMessageEncoder extends HttpMessageEncoder {
38
39 /**
40 * Creates a new instance.
41 */
42 protected RtspMessageEncoder() {
43 super();
44 }
45
46 @Override
47 protected Object encode(ChannelHandlerContext ctx, Channel channel,
48 Object msg) throws Exception {
49 // Ignore unrelated message types such as HttpChunk.
50 if (!(msg instanceof HttpMessage)) {
51 return msg;
52 }
53 return super.encode(ctx, channel, msg);
54 }
55 }