1a796bca57
Initial commit for a SerializedLogBuffer. The intention here is for the serialized data to be compressed (currently using zlib) to allow for substantially longer logs in the same memory footprint. Test: unit tests Change-Id: I2528e4e1ff1cf3bc91130173a107f371f04d911a
47 lines
No EOL
1.6 KiB
C++
47 lines
No EOL
1.6 KiB
C++
/*
|
|
* 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;
|
|
}; |