View Javadoc
1   /*
2    * Copyright 2013 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the 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 io.netty.handler.codec.spdy;
17  
18  import io.netty.buffer.ByteBuf;
19  import io.netty.buffer.ByteBufAllocator;
20  import io.netty.util.internal.PlatformDependent;
21  
22  abstract class SpdyHeaderBlockEncoder {
23  
24      static SpdyHeaderBlockEncoder newInstance(
25              SpdyVersion version, int compressionLevel, int windowBits, int memLevel) {
26  
27          if (PlatformDependent.javaVersion() >= 7) {
28              return new SpdyHeaderBlockZlibEncoder(
29                      version, compressionLevel);
30          } else {
31              return new SpdyHeaderBlockJZlibEncoder(
32                      version, compressionLevel, windowBits, memLevel);
33          }
34      }
35  
36      abstract ByteBuf encode(ByteBufAllocator alloc, SpdyHeadersFrame frame) throws Exception;
37      abstract void end();
38  }