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Compression algorithms

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/*
 * 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.
 */
package io.airlift.compress.v2.zstd;

import static io.airlift.compress.v2.zstd.Constants.MAX_LITERALS_LENGTH_SYMBOL;
import static io.airlift.compress.v2.zstd.Constants.MAX_MATCH_LENGTH_SYMBOL;
import static io.airlift.compress.v2.zstd.Constants.MAX_OFFSET_CODE_SYMBOL;

class SequenceEncodingContext
{
    private static final int MAX_SEQUENCES = Math.max(MAX_LITERALS_LENGTH_SYMBOL, MAX_MATCH_LENGTH_SYMBOL);

    public final FseCompressionTable literalLengthTable = new FseCompressionTable(Constants.LITERAL_LENGTH_TABLE_LOG, MAX_LITERALS_LENGTH_SYMBOL);
    public final FseCompressionTable offsetCodeTable = new FseCompressionTable(Constants.OFFSET_TABLE_LOG, MAX_OFFSET_CODE_SYMBOL);
    public final FseCompressionTable matchLengthTable = new FseCompressionTable(Constants.MATCH_LENGTH_TABLE_LOG, MAX_MATCH_LENGTH_SYMBOL);

    public final int[] counts = new int[MAX_SEQUENCES + 1];
    public final short[] normalizedCounts = new short[MAX_SEQUENCES + 1];
}