ZlibResourceAggregator.h

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/*
* SPDX-FileCopyrightText: Copyright (c) 2020-2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: MIT
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in
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#ifndef NVNEURAL_ZLIBRESOURCEAGGREGATOR_H
#define NVNEURAL_ZLIBRESOURCEAGGREGATOR_H
 
#include <nvneural/CodeGenTypes.h>
#include <nvneural/RefObject.h>
#include <string>
#include <unordered_map>
#include <vector>
 
namespace nvneural {
 
class ZlibResourceAggregator : public refobj::RefObjectBase<refobj::Implements<IResourceAggregator>>
{
public:
    NeuralResult addResource(IResourceAggregator::ResourceId* pResourceIdOut, const void* pBuffer, std::uint32_t bufferBytes) noexcept override;
 
    NeuralResult finalize() noexcept override;
 
    std::size_t resourceIdCount() const noexcept override;
    IResourceAggregator::ResourceId resourceIdByIndex(std::size_t resourceIndex) const noexcept override;
    std::size_t resourceBufferSizeByIndex(std::size_t resourceIndex) const noexcept override;
    const void* resourceBufferByIndex(std::size_t resourceIndex) const noexcept override;
 
private:
    using ByteBuffer = std::string; // Note: Using std::string as a hashable std::vector<uint8_t>
    std::unordered_map<ByteBuffer, ResourceId> m_resources; // buffer -> ID, prevents duplication
 
    std::vector<std::pair<std::vector<uint8_t>, ResourceId>> m_finalizedResources; // only filled in after finalize()
 
    IResourceAggregator::ResourceId generateNewId() const;
};
 
} // namespace nvneural
 
#endif // NVNEURAL_ZLIBRESOURCEAGGREGATOR_H