| // 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 PARQUET_COMPRESSION_CODEC_H |
| #define PARQUET_COMPRESSION_CODEC_H |
| |
| #include <cstdint> |
| #include <memory> |
| |
| #include "parquet/exception.h" |
| #include "parquet/types.h" |
| #include "parquet/util/visibility.h" |
| |
| namespace parquet { |
| |
| class PARQUET_EXPORT Codec { |
| public: |
| virtual ~Codec(); |
| |
| static std::unique_ptr<Codec> Create(Compression::type codec); |
| |
| virtual void Decompress(int64_t input_len, const uint8_t* input, int64_t output_len, |
| uint8_t* output_buffer) = 0; |
| |
| virtual int64_t Compress(int64_t input_len, const uint8_t* input, |
| int64_t output_buffer_len, uint8_t* output_buffer) = 0; |
| |
| virtual int64_t MaxCompressedLen(int64_t input_len, const uint8_t* input) = 0; |
| |
| virtual const char* name() const = 0; |
| }; |
| |
| // Snappy codec. |
| class PARQUET_EXPORT SnappyCodec : public Codec { |
| public: |
| void Decompress(int64_t input_len, const uint8_t* input, int64_t output_len, |
| uint8_t* output_buffer) override; |
| |
| int64_t Compress(int64_t input_len, const uint8_t* input, |
| int64_t output_buffer_len, uint8_t* output_buffer) override; |
| |
| int64_t MaxCompressedLen(int64_t input_len, const uint8_t* input) override; |
| |
| const char* name() const { return "snappy"; } |
| }; |
| |
| // Brotli codec. |
| class PARQUET_EXPORT BrotliCodec : public Codec { |
| public: |
| void Decompress(int64_t input_len, const uint8_t* input, int64_t output_len, |
| uint8_t* output_buffer) override; |
| |
| int64_t Compress(int64_t input_len, const uint8_t* input, int64_t output_buffer_len, |
| uint8_t* output_buffer) override; |
| |
| int64_t MaxCompressedLen(int64_t input_len, const uint8_t* input) override; |
| |
| const char* name() const override { return "brotli"; } |
| }; |
| |
| // GZip codec. |
| class PARQUET_EXPORT GZipCodec : public Codec { |
| public: |
| /// Compression formats supported by the zlib library |
| enum Format { |
| ZLIB, |
| DEFLATE, |
| GZIP, |
| }; |
| |
| explicit GZipCodec(Format format = GZIP); |
| virtual ~GZipCodec(); |
| |
| void Decompress(int64_t input_len, const uint8_t* input, int64_t output_len, |
| uint8_t* output_buffer) override; |
| |
| int64_t Compress(int64_t input_len, const uint8_t* input, |
| int64_t output_buffer_len, uint8_t* output_buffer) override; |
| |
| int64_t MaxCompressedLen(int64_t input_len, const uint8_t* input) override; |
| |
| const char* name() const override; |
| |
| private: |
| // The gzip compressor is stateful |
| class GZipCodecImpl; |
| std::unique_ptr<GZipCodecImpl> impl_; |
| }; |
| |
| } // namespace parquet |
| |
| #endif |