// DeflaterConstants.cs // Copyright (C) 2001 Mike Krueger // // This file was translated from java, it was part of the GNU Classpath // Copyright (C) 2001 Free Software Foundation, Inc. // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // // Linking this library statically or dynamically with other modules is // making a combined work based on this library. Thus, the terms and // conditions of the GNU General Public License cover the whole // combination. // // As a special exception, the copyright holders of this library give you // permission to link this library with independent modules to produce an // executable, regardless of the license terms of these independent // modules, and to copy and distribute the resulting executable under // terms of your choice, provided that you also meet, for each linked // independent module, the terms and conditions of the license of that // module. An independent module is a module which is not derived from // or based on this library. If you modify this library, you may extend // this exception to your version of the library, but you are not // obligated to do so. If you do not wish to do so, delete this // exception statement from your version. using System; namespace ICSharpCode.SharpZipLib.Zip.Compression { /// /// This class contains constants used for the deflater. /// public class DeflaterConstants { public const bool DEBUGGING = false; public const int STORED_BLOCK = 0; public const int STATIC_TREES = 1; public const int DYN_TREES = 2; public const int PRESET_DICT = 0x20; public const int DEFAULT_MEM_LEVEL = 8; public const int MAX_MATCH = 258; public const int MIN_MATCH = 3; public const int MAX_WBITS = 15; public const int WSIZE = 1 << MAX_WBITS; public const int WMASK = WSIZE - 1; public const int HASH_BITS = DEFAULT_MEM_LEVEL + 7; public const int HASH_SIZE = 1 << HASH_BITS; public const int HASH_MASK = HASH_SIZE - 1; public const int HASH_SHIFT = (HASH_BITS + MIN_MATCH - 1) / MIN_MATCH; public const int MIN_LOOKAHEAD = MAX_MATCH + MIN_MATCH + 1; public const int MAX_DIST = WSIZE - MIN_LOOKAHEAD; public const int PENDING_BUF_SIZE = 1 << (DEFAULT_MEM_LEVEL + 8); public static int MAX_BLOCK_SIZE = Math.Min(65535, PENDING_BUF_SIZE-5); public const int DEFLATE_STORED = 0; public const int DEFLATE_FAST = 1; public const int DEFLATE_SLOW = 2; public static int[] GOOD_LENGTH = { 0, 4, 4, 4, 4, 8, 8, 8, 32, 32 }; public static int[] MAX_LAZY = { 0, 4, 5, 6, 4,16, 16, 32, 128, 258 }; public static int[] NICE_LENGTH = { 0, 8,16,32,16,32,128,128, 258, 258 }; public static int[] MAX_CHAIN = { 0, 4, 8,32,16,32,128,256,1024,4096 }; public static int[] COMPR_FUNC = { 0, 1, 1, 1, 1, 2, 2, 2, 2, 2 }; } }