76 lines
2.6 KiB
C++
76 lines
2.6 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OCEANBASE_COMMON_COMPRESS_OB_COMPRESSOR_H_
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#define OCEANBASE_COMMON_COMPRESS_OB_COMPRESSOR_H_
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#include <stdint.h>
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#include "lib/string/ob_string.h"
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#include "lib/compress/ob_compress_util.h"
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namespace oceanbase
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{
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namespace common
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{
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class ObIAllocator;
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class ObCompressor
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{
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public:
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static const char *none_compressor_name;
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public:
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ObCompressor() {}
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virtual ~ObCompressor() {}
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virtual int compress(const char *src_buffer,
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const int64_t src_data_size,
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char *dst_buffer,
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const int64_t dst_buffer_size,
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int64_t &dst_data_size,
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ObIAllocator *allocator)
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{
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UNUSED(allocator);
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return compress(src_buffer, src_data_size, dst_buffer, dst_buffer_size,
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dst_data_size);
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}
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virtual int decompress(const char *src_buffer,
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const int64_t src_data_size,
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char *dst_buffer,
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const int64_t dst_buffer_size,
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int64_t &dst_data_size,
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ObIAllocator *allocator)
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{
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UNUSED(allocator);
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return decompress(src_buffer, src_data_size, dst_buffer, dst_buffer_size,
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dst_data_size);
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}
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virtual int compress(const char *src_buffer,
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const int64_t src_data_size,
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char *dst_buffer,
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const int64_t dst_buffer_size,
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int64_t &dst_data_size) = 0;
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virtual int decompress(const char *src_buffer,
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const int64_t src_data_size,
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char *dst_buffer,
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const int64_t dst_buffer_size,
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int64_t &dst_data_size) = 0;
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virtual int get_max_overflow_size(const int64_t src_data_size,
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int64_t &max_overflow_size) const = 0;
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virtual void reset_mem() {}
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virtual const char *get_compressor_name() const = 0;
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virtual ObCompressorType get_compressor_type() const = 0;
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};
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}//namespace common
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}//namespace oceanbase
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#endif
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