| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <span> |
| #include <vector> |
| |
| class CompressionEngine { |
| public: |
| static CompressionEngine& GetInstance(); |
| |
| virtual ~CompressionEngine(){}; |
| |
| virtual bool Compress(std::span<uint8_t> in, std::vector<uint8_t>& out) = 0; |
| // Decompress the contents of `in` into `out`. `out_size` must be set to the decompressed size |
| // of the contents. |
| virtual bool Decompress(const std::vector<uint8_t>& in, std::vector<uint8_t>& out, |
| size_t out_size) = 0; |
| }; |
| |
| class ZlibCompressionEngine : public CompressionEngine { |
| public: |
| bool Compress(std::span<uint8_t> in, std::vector<uint8_t>& out) override; |
| bool Decompress(const std::vector<uint8_t>& in, std::vector<uint8_t>& out, |
| size_t out_size) override; |
| }; |
| |
| class ZstdCompressionEngine : public CompressionEngine { |
| public: |
| bool Compress(std::span<uint8_t> in, std::vector<uint8_t>& out) override; |
| bool Decompress(const std::vector<uint8_t>& in, std::vector<uint8_t>& out, |
| size_t out_size) override; |
| }; |