io.airlift.compress.v2.zstd.HuffmanTableWriterWorkspace Maven / Gradle / Ivy

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Compression algorithms

There is a newer version: 2.0.2

/*
 * 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.Huffman.MAX_FSE_TABLE_LOG;
import static io.airlift.compress.v2.zstd.Huffman.MAX_SYMBOL;
import static io.airlift.compress.v2.zstd.Huffman.MAX_TABLE_LOG;

class HuffmanTableWriterWorkspace
{
    // for encoding weights
    public final byte[] weights = new byte[MAX_SYMBOL]; // the weight for the last symbol is implicit

    // for compressing weights
    public final int[] counts = new int[MAX_TABLE_LOG + 1];
    public final short[] normalizedCounts = new short[MAX_TABLE_LOG + 1];
    public final FseCompressionTable fseTable = new FseCompressionTable(MAX_FSE_TABLE_LOG, MAX_TABLE_LOG);
}