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1   /*
2    * Copyright 2021 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    *   https://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.compression;
17  
18  final class ZstdConstants {
19  
20      /**
21       * Default compression level
22       */
23      static final int DEFAULT_COMPRESSION_LEVEL = 3;
24  
25      /**
26       * Max compression level
27       */
28      static final int MAX_COMPRESSION_LEVEL = 22;
29  
30      /**
31       * Max block size
32       */
33      static final int MAX_BLOCK_SIZE = 1 << (DEFAULT_COMPRESSION_LEVEL + 7) + 0x0F;   //  32 M
34      /**
35       * Default block size
36       */
37      static final int DEFAULT_BLOCK_SIZE = 1 << 16;  // 64 KB
38  
39      private ZstdConstants() { }
40  }