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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "output.h"
#include <vector>
namespace vespalib {
/**
* Output filter compressing data into framed lz4 format. This class
* will use the simple LZ4 compression API to encode complete frames
* at a time, trading performance for simplicity.
**/
class Lz4OutputEncoder : public Output
{
private:
Output &_output;
std::vector<char> _buffer;
size_t _used;
size_t _limit;
void encode_frame();
public:
Lz4OutputEncoder(Output &output, size_t buffer_size);
~Lz4OutputEncoder();
WritableMemory reserve(size_t bytes) override;
Output &commit(size_t bytes) override;
};
} // namespace vespalib
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