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Fork of https://github.com/airlift/aircompressor (zstd only). This module is temporary until we get an official release that includes the ZstdInputStream API (which is already implemented by two different people but neither PR shows any progress).

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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 ai.vespa.airlift.zstd;

import static ai.vespa.airlift.zstd.Huffman.MAX_FSE_TABLE_LOG;
import static ai.vespa.airlift.zstd.Huffman.MAX_SYMBOL;
import static ai.vespa.airlift.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);
}