content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
   *
   *     https://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 org.apache.avro.file;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  
  import com.github.luben.zstd.BufferPool;
  import com.github.luben.zstd.NoPool;
  import com.github.luben.zstd.RecyclingBufferPool;
  import com.github.luben.zstd.Zstd;
  import com.github.luben.zstd.ZstdInputStreamNoFinalizer;
  import com.github.luben.zstd.ZstdOutputStreamNoFinalizer;
  
  /* causes lazier classloader initialization of ZStandard libraries, so that
   * we get NoClassDefFoundError when we try and use the Codec's compress
   * or decompress methods rather than when we instantiate it */
  final class ZstandardLoader {
  
    static InputStream input(InputStream compressed, boolean useBufferPool) throws IOException {
      BufferPool pool = useBufferPool ? RecyclingBufferPool.INSTANCE : NoPool.INSTANCE;
      return new ZstdInputStreamNoFinalizer(compressed, pool);
    }
  
    static OutputStream output(OutputStream compressed, int level, boolean checksum, boolean useBufferPool)
        throws IOException {
      int bounded = Math.max(Math.min(level, Zstd.maxCompressionLevel()), Zstd.minCompressionLevel());
      BufferPool pool = useBufferPool ? RecyclingBufferPool.INSTANCE : NoPool.INSTANCE;
      ZstdOutputStreamNoFinalizer zstdOutputStream = new ZstdOutputStreamNoFinalizer(compressed, pool).setLevel(bounded);
      zstdOutputStream.setCloseFrameOnFlush(false);
      zstdOutputStream.setChecksum(checksum);
      return zstdOutputStream;
    }
  }
  