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44 lines
1.7 KiB
C++
44 lines
1.7 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#pragma once
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#include <AzCore/Memory/SystemAllocator.h>
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#include <AzNetworking/Framework/ICompressor.h>
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#include <AzCore/Casting/numeric_cast.h>
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namespace MultiplayerCompression
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{
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static const char* CompressorName = "LZ4";
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static const AzNetworking::CompressorType CompressorType = aznumeric_cast<AzNetworking::CompressorType>(static_cast<AZ::u32>(AZ::Crc32(CompressorName)));
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/**
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* Implements an LZ4 Compressor against GridMate's Compressor interface for use with the Multiplayer Gem.
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* Handles edge and error cases specific to LZ4 that are otherwise not covered in GridMate Carrier
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* (where a Compressor is applied).
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*/
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class LZ4Compressor
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: public AzNetworking::ICompressor
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{
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public:
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AZ_CLASS_ALLOCATOR(LZ4Compressor, AZ::SystemAllocator, 0);
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LZ4Compressor() = default;
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const char* GetName() const { return CompressorName; }
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AzNetworking::CompressorType GetType() const override { return CompressorType; };
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bool Init() override { return true; }
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size_t GetMaxChunkSize(size_t maxCompSize) const override;
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size_t GetMaxCompressedBufferSize(size_t uncompSize) const override;
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AzNetworking::CompressorError Compress(const void* uncompData, size_t uncompSize, void* compData, size_t compDataSize, size_t& compSize) override;
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AzNetworking::CompressorError Decompress(const void* compData, size_t compDataSize, void* uncompData, size_t uncompDataSize, size_t& consumedSize, size_t& uncompSize) override;
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};
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}
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