1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <memory> 20 21 #include "SerializedData.h" 22 23 class CompressionEngine { 24 public: 25 static CompressionEngine& GetInstance(); 26 ~CompressionEngine()27 virtual ~CompressionEngine(){}; 28 29 virtual bool Compress(SerializedData& in, size_t data_length, SerializedData& out) = 0; 30 // Decompress the contents of `in` into `out`. `out.size()` must be set to the decompressed 31 // size of the contents. 32 virtual bool Decompress(SerializedData& in, SerializedData& out) = 0; 33 }; 34 35 class ZlibCompressionEngine : public CompressionEngine { 36 public: 37 bool Compress(SerializedData& in, size_t data_length, SerializedData& out) override; 38 bool Decompress(SerializedData& in, SerializedData& out) override; 39 }; 40 41 class ZstdCompressionEngine : public CompressionEngine { 42 public: 43 bool Compress(SerializedData& in, size_t data_length, SerializedData& out) override; 44 bool Decompress(SerializedData& in, SerializedData& out) override; 45 };