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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
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package net.jpountz.lz4;
/*
* Copyright 2020 Adrien Grand and the lz4-java contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
enum LZ4Constants {
;
static final int DEFAULT_COMPRESSION_LEVEL = 8+1;
static final int MAX_COMPRESSION_LEVEL = 16+1;
static final int MEMORY_USAGE = 14;
static final int NOT_COMPRESSIBLE_DETECTION_LEVEL = 6;
static final int MIN_MATCH = 4;
static final int HASH_LOG = MEMORY_USAGE - 2;
static final int HASH_TABLE_SIZE = 1 << HASH_LOG;
static final int SKIP_STRENGTH = Math.max(NOT_COMPRESSIBLE_DETECTION_LEVEL, 2);
static final int COPY_LENGTH = 8;
static final int LAST_LITERALS = 5;
static final int MF_LIMIT = COPY_LENGTH + MIN_MATCH;
static final int MIN_LENGTH = MF_LIMIT + 1;
static final int MAX_DISTANCE = 1 << 16;
static final int ML_BITS = 4;
static final int ML_MASK = (1 << ML_BITS) - 1;
static final int RUN_BITS = 8 - ML_BITS;
static final int RUN_MASK = (1 << RUN_BITS) - 1;
static final int LZ4_64K_LIMIT = (1 << 16) + (MF_LIMIT - 1);
static final int HASH_LOG_64K = HASH_LOG + 1;
static final int HASH_TABLE_SIZE_64K = 1 << HASH_LOG_64K;
static final int HASH_LOG_HC = 15;
static final int HASH_TABLE_SIZE_HC = 1 << HASH_LOG_HC;
static final int OPTIMAL_ML = ML_MASK - 1 + MIN_MATCH;
}
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