cpp/src/compress/zstd_compressor.h

/*
 * 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
 *
 *     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.
 */

#ifndef COMPRESS_ZSTD_COMPRESSOR_H
#define COMPRESS_ZSTD_COMPRESSOR_H

#include <stdint.h>
#include <zstd.h>

#include "compressor.h"
#include "utils/errno_define.h"
#include "utils/util_define.h"

namespace storage {

class ZstdCompressor : public Compressor {
   public:
    ZstdCompressor() : compressed_buf_(nullptr), uncompressed_buf_(nullptr) {}
    ~ZstdCompressor() OVERRIDE { destroy(); }

    int reset(bool for_compress) OVERRIDE;
    void destroy() OVERRIDE;
    int compress(char* uncompressed_buf, uint32_t uncompressed_buf_len,
                 char*& compressed_buf, uint32_t& compressed_buf_len) OVERRIDE;
    void after_compress(char* compressed_buf) OVERRIDE;
    int uncompress(char* compressed_buf, uint32_t compressed_buf_len,
                   char*& uncompressed_buf,
                   uint32_t& uncompressed_buf_len) OVERRIDE;
    void after_uncompress(char* uncompressed_buf) OVERRIDE;

   private:
    char* compressed_buf_;
    char* uncompressed_buf_;
};

}  // namespace storage

#endif  // COMPRESS_ZSTD_COMPRESSOR_H