kopia lustrzana https://github.com/jameshball/osci-render
66 wiersze
1.7 KiB
C
66 wiersze
1.7 KiB
C
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/*
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* IXWebSocketPerMessageDeflateCodec.h
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* Author: Benjamin Sergeant
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* Copyright (c) 2018-2019 Machine Zone, Inc. All rights reserved.
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*/
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#pragma once
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#ifdef IXWEBSOCKET_USE_ZLIB
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#include "zlib.h"
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#endif
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#include <array>
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#include <cstdint>
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#include <string>
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#include <vector>
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#include "IXWebSocketSendData.h"
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namespace ix
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{
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class WebSocketPerMessageDeflateCompressor
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{
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public:
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WebSocketPerMessageDeflateCompressor();
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~WebSocketPerMessageDeflateCompressor();
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bool init(uint8_t deflateBits, bool clientNoContextTakeOver);
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bool compress(const IXWebSocketSendData& in, std::string& out);
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bool compress(const std::string& in, std::string& out);
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bool compress(const std::string& in, std::vector<uint8_t>& out);
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bool compress(const std::vector<uint8_t>& in, std::string& out);
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bool compress(const std::vector<uint8_t>& in, std::vector<uint8_t>& out);
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private:
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template<typename T, typename S>
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bool compressData(const T& in, S& out);
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template<typename T>
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bool endsWithEmptyUnCompressedBlock(const T& value);
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int _flush;
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std::array<unsigned char, 1 << 14> _compressBuffer;
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#ifdef IXWEBSOCKET_USE_ZLIB
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z_stream _deflateState;
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#endif
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};
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class WebSocketPerMessageDeflateDecompressor
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{
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public:
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WebSocketPerMessageDeflateDecompressor();
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~WebSocketPerMessageDeflateDecompressor();
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bool init(uint8_t inflateBits, bool clientNoContextTakeOver);
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bool decompress(const std::string& in, std::string& out);
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private:
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int _flush;
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std::array<unsigned char, 1 << 14> _compressBuffer;
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#ifdef IXWEBSOCKET_USE_ZLIB
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z_stream _inflateState;
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#endif
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};
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} // namespace ix
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